CN115436824B - Super capacitor test method and device, electronic equipment and storage medium - Google Patents

Abstract

The application discloses a supercapacitor testing method, device, electronic equipment and storage medium, and relates to the technical field of automatic testing. The method includes: identifying a supercapacitor battery pack through a detection circuit, the supercapacitor battery pack includes a first supercapacitor and a second supercapacitor, and the first supercapacitor and the second supercapacitor are connected in series; Charging parameters, charging the supercapacitor battery pack and starting timing; in response to detecting that the voltage of the supercapacitor battery pack exceeds the first preset threshold, stop charging and end timing, and determine whether the charging timing exceeds the second preset threshold; if charging When the timing exceeds the second preset threshold, a voltage balance function test is performed on the first supercapacitor and the second supercapacitor, and a test result is output. The present application can improve the test efficiency and test accuracy of the supercapacitor battery pack performance test.

Description

A supercapacitor testing method, device, electronic equipment and storage medium

technical field

The present application relates to the technical field of automated testing, in particular to a supercapacitor testing method, device, electronic equipment and storage medium.

Background technique

At present, with the explosive growth of mobile terminals, electric bicycles, electric vehicles and other equipment, the demand for batteries is also increasing. In addition to the current hot lithium batteries, supercapacitors still have a place in some specific scenarios due to their advantages such as good low-temperature performance and fast charging and discharging. In practical applications, servers often use supercapacitors to deal with sudden power failures, and can save important data to avoid loss. At present, supercapacitors are often used as backup power for RAID (Redundant Arrays of Independent Disks, disk array) cards. When the server is abnormally powered off, the backup power supports the RAID card to store the data read and written, and it can be restored when it is turned on next time. , to avoid loss of important data.

In the production process of supercapacitor battery packs, testing the performance of the battery pack is the key to ensuring the quality of the capacitor. In the prior art, the test of the battery pack for the production of supercapacitors is carried out according to the actual use scenario. The supercapacitor is installed in the server system. After the server is turned on and powered on, the supercapacitor is charged, and then the data reading and writing program of the service is run. After a certain period of time, the whole machine simulates an abnormal power failure and disconnects the AC power supply, and the super capacitor is discharged to support the RAID card to save important data. After powering on again, confirm whether the data is normal, and then confirm whether the supercapacitor is working normally during this process.

The existing technical solutions are applied to actual application scenarios, and have the following defects:

1. In the process of powering on the server, data reading and writing, and powering on again after power-off to confirm that the supercapacitor battery pack is normally completed in a single cycle, due to factors such as long server system startup time, the power consumption of the whole process is long, and a single The overall capacity of the battery pack is not up to standard due to low capacitor capacity or weak soldering of individual capacitors, etc. cannot be identified;

2. There is no clear indication of the performance of the capacitor battery pack. For example, the single-discharge voltage drop of the battery exceeds 1.5V, which will lead to the risk of the voltage being too low to maintain the data. The new battery generally has a voltage drop of 0.5V. After 5 years, the internal parameters will drop. The single discharge voltage drop will reach 1.5V. When testing the whole machine, there is no guarantee that the battery can reach the new battery index, nor can it ensure that all requirements are met within 5 years of life;

3. It is not easy to test individual parameters of the battery pack. For example, due to the discharge of the resistor inside the capacitor, multiple capacitors will be connected in series, and the voltage between the capacitors will be unbalanced. The resistance of the resistor is generally large, and the discharge speed is slow. It may take several days or even dozens of days for the unbalance to appear. Such problems are not easy to reproduce in the whole system, and it is not suitable for reproducing related problems in mass production of capacitors, and the test efficiency is low.

Therefore, how to improve the test efficiency and test accuracy of the supercapacitor battery pack performance test is an urgent problem to be solved at present.

Contents of the invention

In order to solve at least one of the problems mentioned in the above background technology, the present application provides a supercapacitor testing method, device, electronic equipment and storage medium, which can improve the test efficiency and test accuracy of supercapacitor battery pack performance testing.

The specific technical scheme that the embodiment of the present application provides is as follows:

In the first aspect, a supercapacitor testing method is provided, including:

The supercapacitor battery pack is identified by the detection circuit, the supercapacitor battery pack includes a first supercapacitor and a second supercapacitor, the first supercapacitor is connected in series with the second supercapacitor, and the positive pole of the first supercapacitor As the positive pole output of the supercapacitor battery pack, the negative pole of the second supercapacitor is used as the negative pole output of the supercapacitor battery pack;

Setting the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charging the supercapacitor battery pack and starting timing;

In response to detecting that the voltage of the supercapacitor battery pack exceeds a first preset threshold, stop charging end timing, and determine whether the charging timing exceeds a second preset threshold;

If the charging time exceeds the second preset threshold, a voltage balance function test is performed on the first supercapacitor and the second supercapacitor, and a test result is output.

Further, the detection circuit includes an on-position resistance and a thermistor, the on-position resistance is used to detect the on-position signal of the super capacitor, and the thermistor is used to detect the internal temperature of the super capacitor battery pack, so The identification of the supercapacitor battery pack through the detection circuit includes:

Apply voltage to the on-position resistor and the thermistor through the detection circuit and detect the voltage of the on-position resistor and the thermistor to determine the resistance value of the on-position resistor and the thermistor Whether it is normal or not, get the first judgment result;

Identifying the supercapacitor battery pack according to the first judgment result.

Further, if the voltages of the on-position resistor and the thermistor deviate, the first judgment result is that the supercapacitor battery pack is abnormal.

Further, the charging parameters include at least one of charging voltage and charging current, the charging parameters corresponding to the supercapacitor battery pack are set by the charging circuit, the supercapacitor battery pack is charged and timing is started, include:

Setting the charging voltage and charging current corresponding to the supercapacitor battery pack through the charging circuit, charging the supercapacitor battery pack and starting timing;

If the charging timing does not exceed the second preset threshold, the method further includes:

It is determined that the supercapacitor battery pack is abnormal, and it is determined that the current test fails.

Further, the performing a voltage balance function test on the first supercapacitor and the second supercapacitor specifically includes:

Through the first discharge circuit, the second supercapacitor is forced to discharge based on the first discharge time and is left to stand, after the standstill, it is judged whether the second voltage of the second supercapacitor is within the real-time total voltage of the supercapacitor battery pack Within the preset range, the second judgment result is obtained;

Through the second discharge circuit, the first supercapacitor is forced to discharge based on the second discharge time and is left to stand, and after the standstill, it is judged whether the first voltage of the first supercapacitor is within the real-time total voltage of the supercapacitor battery pack Within the preset range, the third judgment result is obtained.

Further, the second supercapacitor is forced to discharge based on the first discharge time through the first discharge circuit and is left to stand still, and after the standstill, it is judged whether the second voltage of the second supercapacitor is within the range of the supercapacitor battery The real-time total voltage of the package is within the preset range, and the second judgment result is obtained, including:

Forcibly discharging the second supercapacitor based on the first discharge time through the first discharge circuit;

After the first discharge time, leave the second supercapacitor at rest, and automatically balance the voltage between the second supercapacitor and the first supercapacitor through the voltage balancing circuit inside the supercapacitor battery pack;

After the first resting time, re-measure the second voltage of the second supercapacitor and the real-time total voltage of the supercapacitor battery pack, and determine whether the second voltage is within the preset range of the real-time total voltage , the second judgment result is obtained.

Further, the first supercapacitor is forced to discharge based on the second discharge time through the second discharge circuit and is left to stand, and after standing, it is judged whether the first voltage of the first supercapacitor is within the range of the supercapacitor battery The real-time total voltage of the package is within the preset range, and the third judgment result is obtained, including:

performing forced discharge on the first supercapacitor based on the second discharge time through the second discharge circuit;

After the second discharge time, the first supercapacitor is left to stand, and the voltage between the first supercapacitor and the second supercapacitor is automatically balanced by a voltage balancing circuit inside the supercapacitor battery pack;

After the second resting time, re-measure the first voltage of the first supercapacitor and the real-time total voltage of the supercapacitor battery pack, and determine whether the first voltage is within a preset range of the real-time total voltage , get the third judgment result.

Further, the preset range includes a first preset ratio and a second preset ratio, and the first preset ratio is not greater than the second preset ratio;

The first discharge time is calculated according to the discharge current of the first discharge circuit, so that the discharge of the second supercapacitor is less than the first preset ratio of the total voltage of the supercapacitor battery pack;

The second discharge time is calculated according to the discharge current of the second discharge circuit, so that the discharge of the first supercapacitor is less than a first preset percentage of the total voltage of the supercapacitor battery pack.

Further, after performing the voltage balance function test on the first supercapacitor and the second supercapacitor, the method further includes:

The supercapacitor battery pack is discharged through the constant current discharge circuit according to the discharge current and the discharge duration of the constant current discharge circuit, and the third voltage of the supercapacitor battery pack before discharge and the supercapacitor battery pack after discharge are recorded. the fourth voltage of the battery pack;

calculating the difference between the third voltage and the fourth voltage;

It is judged whether the difference is smaller than the difference threshold, and a fourth judgment result is obtained.

Further, if the difference is greater than the difference threshold, the fourth judgment result is that the supercapacitor battery pack is abnormal;

If the difference is less than the difference threshold, the fourth judgment result is that the supercapacitor battery pack is discharged normally, and after the fourth judgment result is obtained, the method further includes:

Discharging the supercapacitor battery pack until the total voltage of the supercapacitor battery pack is less than the fifth voltage, and the output test result is that the test is passed.

Further, before the identification of the supercapacitor battery pack through the detection circuit, the method also includes:

Initialize the number of tests to zero;

If the test result is a test pass, after the output test result, the method further includes:

Increase the count of the number of tests by one, and judge whether the number of tests reaches a set number of times;

If the number of tests does not reach the set number of times, re-set the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charge the supercapacitor battery pack and start timing, and re-execute the test until the test The number of times reaches the set number of times.

Further, the supercapacitor battery pack also includes an intermediate node, the intermediate node is located between the first supercapacitor and the second supercapacitor, and the intermediate node is the negative output of the first supercapacitor and the positive output of the second supercapacitor;

The voltage of the intermediate node is used to describe the second voltage of the second supercapacitor, the voltage across the first supercapacitor is the first voltage, and the value of the first voltage is subtracted from the real-time total voltage go to the same value as the second voltage.

In a second aspect, a supercapacitor testing device is provided, the device comprising:

The detection module is used to identify the supercapacitor battery pack through the detection circuit, the supercapacitor battery pack includes a first supercapacitor and a second supercapacitor, the first supercapacitor is connected in series with the second supercapacitor, the The positive pole of the first supercapacitor is output as the positive pole of the supercapacitor battery pack, and the negative pole of the second supercapacitor is output as the negative pole of the supercapacitor battery pack;

The charging module is used to set the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charge the supercapacitor battery pack and start timing;

The management module is used to stop the charging end timing and determine whether the charging timing exceeds the second preset threshold in response to detecting that the voltage of the supercapacitor battery pack exceeds a first preset threshold;

A voltage balance test module, configured to perform a voltage balance function test on the first supercapacitor and the second supercapacitor if the charging timer exceeds the second preset threshold, and output a test result.

In a third aspect, an electronic device is provided, including a memory, a processor, and a computer program stored on the memory and operable on the processor, and the supercapacitor testing method is realized when the processor executes the computer program.

In a fourth aspect, a computer-readable storage medium is provided, storing computer-executable instructions for executing the supercapacitor testing method.

The embodiment of the present application has the following beneficial effects:

A supercapacitor testing method, device, electronic equipment, and storage medium provided in the embodiments of the present application can identify the connected supercapacitor battery pack through the detection circuit, and charge the supercapacitor through the charging circuit according to the type of the identified supercapacitor battery pack. Battery pack matching charging, real-time monitoring of charging voltage and charging time, can test the voltage balance function of the first super capacitor and the second super capacitor, simulate and detect the voltage balance function of the super capacitor battery pack, and can simulate the production process of the super capacitor battery pack function and quality monitoring, without the need for functional testing of the whole server, which can greatly shorten the test time, improve test efficiency and test accuracy; it can also simulate normal use scenarios through the constant current discharge circuit to ensure that the supercapacitor battery pack can meet the design requirements. Requirements, after a single test is completed, the voltage of the supercapacitor battery pack is discharged to a minimum value through the discharge circuit to avoid the possible negative effects of the battery pack being plugged in and out; the number of cycle tests can also be set to perform multiple cycles The test can effectively verify the stability of the performance of the supercapacitor battery pack.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 shows the overall flowchart of the supercapacitor testing method that the embodiment of the present application provides;

Fig. 2 shows a schematic diagram of the internal structure of a supercapacitor battery pack according to an embodiment of the present application;

Fig. 3 shows the specific flowchart of the supercapacitor testing method according to one embodiment of the present application;

FIG. 4 shows a circuit diagram of a detection circuit according to an embodiment of the present application;

Figure 5 shows a circuit diagram of a charging circuit according to an embodiment of the present application;

FIG. 6 shows a circuit diagram of a first discharge circuit according to an embodiment of the present application;

FIG. 7 shows a circuit diagram of a second discharge circuit according to an embodiment of the present application;

FIG. 8 shows a circuit diagram of a constant current discharge circuit according to an embodiment of the present application;

FIG. 9 shows a schematic structural view of a supercapacitor testing device provided in an embodiment of the present application;

Figure 10 illustrates an exemplary system that may be used to implement various embodiments described in this application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only Some embodiments of this application are not all embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be understood that in the description of the present application, unless the context clearly requires it, the words "comprising", "comprising" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; That is to say, the meaning of "including but not limited to".

It should also be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, "plurality" means two or more.

Embodiment one

The application provides a supercapacitor testing method, referring to Fig. 1, including:

S1. Identify the supercapacitor battery pack through the detection circuit. The supercapacitor battery pack includes a first supercapacitor and a second supercapacitor. The first supercapacitor and the second supercapacitor are connected in series. Positive output, the negative pole of the second supercapacitor is used as the negative pole output of the supercapacitor battery pack;

S2. Setting the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charging the supercapacitor battery pack and starting timing;

S3. In response to detecting that the voltage of the supercapacitor battery pack exceeds the first preset threshold, stop the charging end timing, and determine whether the charging timing exceeds the second preset threshold;

S4. If the charging time exceeds the second preset threshold, perform a voltage balance function test on the first supercapacitor and the second supercapacitor, and output a test result.

Specifically, referring to Figure 2, taking two strings of supercapacitor battery packs as an example, the first supercapacitor and the second supercapacitor are both 2.7V, connected in series to form a supercapacitor battery pack with a maximum withstand voltage of 5.4V and an actual maximum output of 5V , the total output voltage +5V is connected to the positive pole of the first supercapacitor C1 as the positive pole output voltage of the supercapacitor battery pack. Wherein, the first supercapacitor and the second supercapacitor are connected in series, there is an intermediate node CC1P between the first supercapacitor C1 and the second supercapacitor C2, and the intermediate node CC1P is the negative output of the first supercapacitor C1, which is also the output of the second supercapacitor C1. The positive output of capacitor C2. The negative pole of the second supercapacitor C2 is the negative pole output of the entire supercapacitor battery pack, which is also the GND output. The voltage of the intermediate node CC1P is used to describe the second voltage across the second supercapacitor C2, the voltage across the first supercapacitor C1 is the first voltage CC2P, and the value of the first voltage CC2P is related to the real-time total voltage (+5V actual voltage) The value minus the second voltage is the same. CC_TS is connected to a thermistor inside the supercapacitor battery pack, and the thermistor is used to sense the internal temperature of the battery; SC_ON is the on-position signal of the battery, which is connected to GND through a resistor inside the supercapacitor battery pack. First, the supercapacitor battery pack can be identified by the in-position resistance in the detection circuit, and then the charging voltage and charging current corresponding to the capacitor of the supercapacitor battery pack can be identified through the charging circuit setting, and the supercapacitor in the supercapacitor battery pack can be charged and charged. Start timing, and detect whether the voltage of the supercapacitor battery pack exceeds the first preset threshold, and stop charging when the voltage of the supercapacitor battery pack exceeds the first preset threshold, and judge whether the charging timer exceeds the second preset threshold. If the charging time does not exceed the second preset threshold, it means that the charging time is short. It may be that the capacity of the capacitor is insufficient or some capacitors are empty, and it is determined that the super capacitor battery pack is abnormal; if the charging time exceeds the second preset threshold, continue to the next step. The test is to perform a voltage balance function test on the first supercapacitor and the second supercapacitor. If the voltage balance function test passes, the output test result is passed; if the voltage balance function test fails, the current test fails.

The present embodiment will be further described below in conjunction with FIG. 3:

In some embodiments, the detection circuit includes an on-position resistor and a thermistor, the on-position resistor is used to detect the on-position signal of the super capacitor, and the thermistor is used to detect the internal temperature of the super capacitor battery pack. Based on this, S1 includes:

S11. Apply voltage to the on-position resistor and the thermistor through the detection circuit and detect the voltage of the on-position resistor and the thermistor, judge whether the resistance values of the on-position resistor and the thermistor are normal, and obtain a first judgment result;

S12. Identify the supercapacitor battery pack according to the first judgment result.

In some implementations, if the voltages of the on-position resistor and the thermistor deviate, the first determination result is that the supercapacitor battery pack is abnormal.

Specifically, by applying voltage to the on-position resistor and the temperature-sensitive thermistor and detecting the voltage through the detection circuit, it can be determined whether the resistance values of the on-position resistor and the thermistor are normal. Deviation, it can be directly judged that the supercapacitor battery pack is abnormal; if the resistance values of the on-site resistance and thermistor are normal, the first judgment result is that the on-site resistance and thermistor test passed, and the next test can be carried out. It is also possible to identify the supercapacitor battery pack based on the in-position resistance, because the test system is also compatible with the test of other batteries, and will not be described here. Exemplary, Fig. 4 shows the circuit diagram of the detection circuit, wherein, J3 is the connector of the supercapacitor battery pack, 400 is the power supply node of the supercapacitor battery pack +5V (output voltage), and is also the positive pole of the entire supercapacitor battery pack output. 200 is the intermediate node of the first supercapacitor and the second supercapacitor in series of the supercapacitor battery pack, which is also the voltage of the CC1P capacitor; 100 is the negative electrode of the supercapacitor battery pack and is also GND. Before the detection circuit test starts, plug the super capacitor battery pack into the J3 connector. 101 is the in-position check signal of the supercapacitor battery pack (300 ohm grounded inside the supercapacitor battery pack), and the signal 103 (equivalent to 101 signal) input to the P3V3 power supply is pulled up through the R86 resistor and output to the MCU (Microcontroller Unit, micro control unit). The MCU determines whether the internal resistance of the 101 signal is normal according to the voltage value. 104 is a temperature detection signal, which is equal to the signal 102. Check whether the thermistor is normal through R114 and the thermistor inside the supercapacitor battery pack. The voltage of the on-position resistor and the thermistor can be detected through the above detection circuit, and it can be judged whether the resistance values of the on-position resistor and the thermistor are normal.

In some implementations, the charging parameters include at least one of charging voltage and charging current, based on which, S2 includes:

S21. Set the charging voltage and charging current corresponding to the supercapacitor battery pack through the charging circuit, charge the supercapacitor battery pack and start timing;

If the charging timing does not exceed the second preset threshold, the method also includes:

It is determined that the supercapacitor battery pack is abnormal, and it is determined that the current test has failed.

Specifically, according to the supercapacitor battery packs identified in the above steps, the charging voltage and charging current corresponding to the identified supercapacitor battery packs can be set through the charging circuit, and the supercapacitor battery packs can be charged and start timing, while detecting Whether the voltage of the supercapacitor battery pack exceeds the first preset threshold, when the voltage of the supercapacitor battery pack exceeds the first preset threshold, stop charging and end timing. If the charging time does not exceed the second preset threshold, it indicates that the charging time is short, which may be due to insufficient capacitor capacity or some capacitors are empty, and it is determined that the battery pack is abnormal; if the charging time exceeds the second preset threshold, continue to the next test.

Exemplarily, FIG. 5 shows a circuit diagram of the charging circuit. Referring to Fig. 5, node 1200 is the input power of the test system, for example, a P12V power supply can be used as the main power input of the system. The charging circuit is a charging control circuit composed of a charging management chip U2, MOS transistors Q1 and Q2, an inductor L1 and a precision resistor R6, and 401 is an output power node. Q15 and Q16 are control switches composed of two P-type MOS tubes to prevent the leakage current on both sides. They are used to control the switches of node 401 and node 400 respectively. Node 116 is a control signal, which turns on Q15 and Q16 when the signal is low. This signal turns off Q15 and Q16 when high. Among them, when the charging loop is turned on, node 116 is set to a high level to charge the supercapacitor battery pack; when the charging loop is turned off, node 116 is kept at a low level. Nodes 111 and 112 are signals to control the output voltage of the charging circuit. When the signal 103 is low, the signal 111 is set to high, and the MOS transistor Q30 is turned on. R13 and R117 are connected in parallel and then connected in series with R12. The output voltage of the control 401 signal does not exceed 5V, 115 is the Feedback (feedback) signal of the charging chip. When it is detected that another capacitor is in place, 112 becomes high level, Q31 is turned on, R116 and R117 are connected in parallel and connected in series with R12, and the output voltage of node 401 is up to 9V. Node 113 is the charging voltage detection signal, which is composed of R109, R111, R112, R110 and U4B circuit voltage divider. When the 401 voltage exceeds the set value, the charging chip of U2 is turned off. The charging process will be timed, from the start of charging until the voltage of node 401 exceeds the first preset threshold, the charging will be stopped and the timing will end. If the charging time exceeds the second preset threshold, the charging test passes, and the next test is continued; if the charging time does not exceed the second preset threshold, the charging test fails, and the entire test fails.

In some embodiments, S4 specifically includes:

S41. Forcibly discharge the second supercapacitor based on the first discharge time through the first discharge circuit and leave it still, and judge whether the second voltage of the second supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack after standing still , get the second judgment result;

S42. Use the second discharge circuit to force discharge the first supercapacitor based on the second discharge time and leave it still, and judge whether the first voltage of the first supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack after standing still , get the third judgment result.

Specifically, the second supercapacitor can be forcibly discharged for a period of time (first discharge time) through the first discharge circuit. At this time, ensure that the voltage of CC1P after discharge is lower than the first preset ratio of the total voltage of the supercapacitor battery pack, and then Stop discharging and start to stand still. At this time, the voltage balance circuit inside the supercapacitor battery pack will automatically start and balance the voltage between CC1P and CC2P. After standing for a specified time, measure the real-time voltage of CC1P and 5V again to ensure the voltage of CC1P Return to the preset range of the total voltage. If it exceeds this range, it is determined that the internal function of the supercapacitor battery pack is abnormal. Similarly, the first supercapacitor can be forced to discharge for a period of time (second discharge time) through the second discharge circuit. At this time, ensure that the voltage of CC2P after discharge is lower than the first preset ratio of the total voltage of the supercapacitor battery pack, and then Stop discharging and start to stand still. At this time, the voltage balance circuit inside the supercapacitor battery pack will automatically start and balance the voltage between CC1P and CC2P. After standing for a specified time, measure the real-time voltage of CC2P and 5V again to ensure the voltage of CC2P Return to the preset range of the total voltage. If it exceeds this range, it is determined that the internal function of the supercapacitor battery pack is abnormal. It should be noted that there is no mandatory sequence for the forced discharge of the second supercapacitor through the first discharge circuit and the forced discharge of the first supercapacitor through the second discharge circuit. For discharging, the first supercapacitor may also be forcibly discharged through the second discharge circuit first. If the second voltage CC1P voltage of the second supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack, it indicates that the inside of the supercapacitor battery pack is normal, and the second judgment result is that the voltage balance test of the second supercapacitor passes, otherwise , the second judgment result is test failure; if the first voltage CC2P voltage of the first supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack, it indicates that the interior of the supercapacitor battery pack is normal, and the third judgment result is the first A supercapacitor voltage balance test is passed; otherwise, the third judgment result is a test failure.

In some embodiments, S41 includes:

S411. Forcibly discharge the second supercapacitor based on the first discharge time through the first discharge circuit;

S412. After the first discharge time, leave the second supercapacitor still, and automatically balance the voltage between the second supercapacitor and the first supercapacitor through the voltage balance circuit inside the supercapacitor battery pack;

S413. After the first resting time, re-measure the second voltage of the second supercapacitor and the real-time total voltage of the supercapacitor battery pack, judge whether the second voltage is within the preset range of the real-time total voltage, and obtain a second judgment result.

For example, referring to Figure 6, node 200 is CC1P, node 100 is the negative pole of the supercapacitor battery pack (that is, GND), inductor L2, power chip U6 and power diode D6 form a boost circuit, and node 122 is the output of the boost circuit Voltage, R17 is a power discharge resistor, node 121 is a control signal. When 121 is high level, the N-type MOS transistor Q5 is turned on, the discharge circuit starts to work, and discharges through the power resistance of R17. The discharge current is the ratio of the 122 voltage to the resistance of R17. At this time, CC1P is forced to discharge. When 121 is low level, Q5 is closed, the discharge circuit is closed, and at this time, the forced discharge of CC1P is stopped. By controlling the high-level time of the 121 signal, the first discharge time to CC1P can be controlled, and the discharge current can be adjusted by adjusting the resistance value of R17. After the discharge is completed, the supercapacitor battery pack needs to be left still. The balance circuit inside the battery pack will automatically balance the voltage of CC1P. After the first rest time, by grabbing the voltage values of nodes 200 and 400, Judging whether the voltage ratio of these two nodes is within the preset ratio range, thereby judging whether the second voltage is within the preset range of the real-time total voltage, if it is within the range, the second judgment result is passed, otherwise, the test fails .

In some embodiments, S42 includes:

S421. Forcibly discharge the first supercapacitor based on the second discharge time through the second discharge circuit;

S422. After the second discharge time, leave the first supercapacitor still, and automatically balance the voltage between the first supercapacitor and the second supercapacitor through the voltage balance circuit inside the supercapacitor battery pack;

S423. After the second resting time, re-measure the first voltage of the first supercapacitor and the real-time total voltage of the supercapacitor battery pack, judge whether the first voltage is within the preset range of the real-time total voltage, and obtain a third judgment result.

Exemplarily, referring to FIG. 7, CC2P is a supercapacitor between node 400 and node 200, and has a boost circuit composed of inductor L3, power diode D8 and power chip U3, which boosts the voltage of CC2P to a fixed output voltage, Node 132 is the output voltage of the boost circuit. Node 131 is a control signal, which controls the switch of the CC2P discharge circuit. When the node 131 is at low level, the MOS transistor Q18 is turned off, Q6 is turned on, and the discharging boost circuit starts to work, and the output voltage 132 is discharged through the high-power resistor R28. When the control signal 131 becomes high level, Q18 is turned on, Q6 is turned off, and the forced discharge circuit is turned off. After discharging the CC2P for the second discharge time, the supercapacitor battery pack is left to stand for the second time, and by grabbing the voltage values of nodes 200 and 400, it is judged whether the voltage ratio of these two nodes is within the preset ratio range, Therefore, it is judged whether the first voltage is within the preset range of the real-time total voltage. If it is within the range, the third judgment result is passed; otherwise, the test fails.

In some embodiments, the preset range includes a first preset ratio and a second preset ratio, and the first preset ratio is not greater than the second preset ratio; the first discharge time is based on the first discharge circuit The discharge current is calculated so that after the second super capacitor is discharged, it is less than the first preset ratio of the total voltage of the super capacitor battery pack; the second discharge time is calculated according to the discharge current of the second discharge circuit, so that the first After the supercapacitor is discharged, it is less than a first preset ratio of the total voltage of the supercapacitor battery pack.

Specifically, during normal operation, the capacitor voltages of CC1P and CC2P are basically equal. For example, we set the voltages of CC1P and CC2P to be between the first preset ratio and the second preset ratio of the real-time total voltage. The first preset ratio can be 48.5%, and the second preset ratio can be 51.5%, so the preset range is 48.5%~51.5%; similarly, the first preset ratio can be 49%, and the second preset ratio can be 48.5%. If the proportion is 51%, then the preset range is 49%~51%. You can adjust the preset range and test accuracy according to the actual test requirements. The capacitor of CC1P can be forced to discharge for a period of time through the first discharge circuit, and the first discharge time can be calculated according to the discharge current to ensure that the voltage of CC1P after discharge is lower than the first preset of the total voltage +5V (real-time measured value) ratio (for example, 48.5%), stop discharging and start to stand still. At this time, the voltage balance circuit inside the supercapacitor battery pack will automatically start and balance the voltage between CC1P and CC2P. After standing for a specified time (the first resting time ), measure the real-time voltage of CC1P and 5V again, and ensure that the voltage of CC1P returns to the range between the first preset ratio and the second preset ratio of the total voltage (for example, between 48.5% and 51.5%), if it exceeds this range , it is determined that the internal function of the battery pack is abnormal, and if it is within the preset range, the next test will be performed. Carry out voltage balance test on CC2P in the same way, discharge the capacitance of CC2P for a period of time, calculate the second discharge time according to the discharge current, and ensure that the voltage of CC2P after discharge is lower than the total voltage + 5V (real-time measurement value). A preset ratio (for example, 48.5%), stop discharging and start to stand still. At this time, the voltage balance circuit inside the supercapacitor battery pack will automatically start and balance the voltage between CC1P and CC2P. After standing for a specified time (second resting time), measure the real-time voltage of CC2P and 5V again to ensure that the voltage of CC2P returns to the range between the first preset ratio and the second preset ratio of the total voltage (for example, between 48.5% and 51.5%), if If it exceeds the range, it is determined that the internal function of the battery pack is abnormal, and if it is within the preset range, the next step of testing will be performed. It should be noted that there is no mandatory order for the voltage balance test of CC1P and the voltage balance test of CC2P.

In some implementations, after performing a voltage balance function test on the first supercapacitor and the second supercapacitor, the method further includes:

S51. Discharge the supercapacitor battery pack through the constant current discharge circuit according to the discharge current and the discharge duration of the constant current discharge circuit, and record the third voltage of the supercapacitor battery pack before discharge and the fourth voltage of the supercapacitor battery pack after discharge. ;

S52. Calculate the difference between the third voltage and the fourth voltage;

S53. Determine whether the difference is smaller than the difference threshold, and obtain a fourth determination result.

Specifically, the constant current discharge test is used to simulate the testing of the supercapacitor battery pack in a server power-off scenario when the supercapacitor battery pack is working in the server. First start the constant current discharge circuit. The discharge current and discharge duration of the above constant current discharge circuit can be set according to the circuit and time of the supercapacitor battery pack in the power-down scene when the server is working, and record before the discharge starts and after the discharge is completed. The voltage value of +5V is the third voltage V1 and the fourth voltage V2, and calculate the difference between V1 and V2, if the difference is less than the difference threshold, it indicates that the super capacitor battery pack is discharged normally; otherwise, it indicates that the super capacitor battery pack is discharged Abnormal, the fourth judgment result is test failure.

Exemplarily, referring to FIG. 8, the resistor R35, the control chip U5, the power transistor Q12 and the power resistor R41 form a constant current discharge circuit, and the circuit passes the control signal of the node 141. When the signal 141 is at a high level, the N-type MOS transistor Q17 conducts Through, the discharge circuit starts to work, adjusting the resistance value of R41 can adjust the size of the constant current discharge current value. Before constant current discharge, record the voltage V1 of 400 nodes. After constant current discharge for a specified time, measure the voltage V2 of 400 nodes again. The voltage difference between V1 and V2 must be less than the difference threshold, and the fourth judgment result is the test passed.

In some implementations, if the difference is greater than the difference threshold, the fourth judgment result is that the supercapacitor battery pack is abnormal;

If the difference is less than the difference threshold, the fourth judgment result is that the discharge of the supercapacitor battery pack is normal. Based on this, after the fourth judgment result is obtained, the method further includes:

Discharging the supercapacitor battery pack until the total voltage of the supercapacitor battery pack is less than the fifth voltage, and the output test result is that the test is passed.

Specifically, when the fourth judgment result is that the constant current discharge test is passed, start the constant current discharge circuit and monitor the voltage at node 400. When the voltage at node 400 is less than the fifth voltage (which can be set to 0.3V), the supercapacitor All tests of the single charge and discharge of the battery pack are completed.

In some embodiments, before S1, the method also includes:

S0, initialize the number of tests to zero;

If the test result is the test passed, after outputting the test result, the method further includes:

S6. Increase the count of the number of tests by one, and judge whether the number of tests reaches the set number of times;

If the number of tests does not reach the set number of times, re-set the charging parameters of the corresponding super capacitor battery pack through the charging circuit, charge the super capacitor battery pack and start timing, and re-execute the test until the number of tests reaches the set number of times.

Specifically, when the constant current discharge test is passed, the constant current discharge circuit is started to discharge until the total voltage of the supercapacitor battery pack is less than the fifth voltage. At this time, all tests for a single charge and discharge are completed, and the number of tests is increased by one. In particular, if a loop test is required, set the number of loop tests, and the test system will automatically start the loop test from step S2. If there is no test failure during the test, the test will continue until the number of tests reaches the set number and the entire test will end. .

In this embodiment, the connected supercapacitor battery pack can be identified through the detection circuit, and the supercapacitor battery pack can be matched and charged through the charging circuit according to the identified supercapacitor battery pack type, and the charging voltage and charging time can be monitored in real time. Perform voltage balance function test on the first supercapacitor and the second supercapacitor, and simulate and detect the voltage balance function of the supercapacitor battery pack, which can simulate the function and quality monitoring of the supercapacitor battery pack production process, without the need for a functional test of the server. It can greatly shorten the test time, improve the test efficiency and test accuracy; it can also simulate the normal use scene through the constant current discharge circuit to ensure that the super capacitor battery pack can meet the design requirements. The voltage of the battery pack is discharged to a minimum value to avoid the possible negative impact of the battery pack being plugged and unplugged; the number of cycle tests can also be set to perform multiple cycle tests, which can effectively verify the stability of the performance of the supercapacitor battery pack.

It should be noted that the terms "S1", "S2" and so on are only used for the description purpose of the steps, and do not specifically refer to the order or order, nor are they used to limit the application, but are only for the convenience of describing the method of the application , and cannot be understood as indicating the sequence of steps. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.

Embodiment two

Corresponding to the above-mentioned embodiments, the present application also provides a supercapacitor testing device. Referring to FIG. 9 , the device includes a detection module, a charging module, a management module, and a voltage balance testing module.

Wherein, the detection module is used to identify the supercapacitor battery pack through the detection circuit, the supercapacitor battery pack includes a first supercapacitor and a second supercapacitor, the first supercapacitor is connected in series with the second supercapacitor, The positive pole of the first supercapacitor is output as the positive pole of the supercapacitor battery pack, and the negative pole of the second supercapacitor is output as the negative pole of the supercapacitor battery pack; the charging module is used to set the corresponding According to the charging parameters of the supercapacitor battery pack, the supercapacitor battery pack is charged and starts timing; the management module is configured to stop the charging end timing in response to detecting that the voltage of the supercapacitor battery pack exceeds a first preset threshold , and determine whether the charging timing exceeds the second preset threshold; the voltage balance test module is used to perform voltage on the first supercapacitor and the second supercapacitor if the charging timing exceeds the second preset threshold Balance function test, output test result.

Further, the detection circuit includes an on-position resistance and a thermistor, the on-position resistance is used to detect the on-position signal of the super capacitor, and the thermistor is used to detect the internal temperature of the super capacitor battery pack, based on Here, the detection module is also used to apply voltage to the on-position resistance and the thermistor through the detection circuit and detect the voltage of the on-position resistance and the thermistor, and determine the on-position resistance and the thermistor. Whether the resistance value of the thermistor is normal, obtains a first judgment result; and is used to identify the supercapacitor battery pack according to the first judgment result.

Further, if the voltages of the on-position resistor and the thermistor deviate, the first judgment result is that the supercapacitor battery pack is abnormal.

Further, the charging parameters include at least one of charging voltage and charging current, and the charging module is also used to set the charging voltage and charging current corresponding to the supercapacitor battery pack through the charging circuit, and charge the supercapacitor battery pack Carry out charging and start timing; if the charging timing does not exceed the second preset threshold, the management module is also used to determine that the supercapacitor battery pack is abnormal, and determine that the current test has failed.

Further, the voltage balance test module is also used to force discharge the second supercapacitor based on the first discharge time through the first discharge circuit and leave it at rest, and judge whether the second voltage of the second supercapacitor is within The second judgment result is obtained within the preset range of the real-time total voltage of the supercapacitor battery pack; and it is used to forcefully discharge the first supercapacitor based on the second discharge time through the second discharge circuit and leave it at rest. Then judge whether the first voltage of the first supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack, and obtain a third judgment result.

Further, the voltage balance test module is also used to force discharge the second supercapacitor based on the first discharge time through the first discharge circuit; and is used to rest the second supercapacitor after the first discharge time Capacitor, automatically balances the voltage between the second supercapacitor and the first supercapacitor through the voltage balance circuit inside the supercapacitor battery pack; it is also used to re-measure the first supercapacitor after the first resting time The second voltage of the two supercapacitors and the real-time total voltage of the supercapacitor battery pack are judged whether the second voltage is within the preset range of the real-time total voltage, and a second judgment result is obtained.

Further, the voltage balance test module is also used to force discharge the first supercapacitor based on the second discharge time through the second discharge circuit; and is used to rest the first supercapacitor after the second discharge time Capacitor, through the voltage balance circuit inside the supercapacitor battery pack to automatically balance the voltage between the first supercapacitor and the second supercapacitor; it is also used to re-measure the first supercapacitor after the second resting time A first voltage of the supercapacitor and the real-time total voltage of the supercapacitor battery pack are judged whether the first voltage is within a preset range of the real-time total voltage, and a third judgment result is obtained.

Further, the preset range includes a first preset ratio and a second preset ratio, the first preset ratio is not greater than the second preset ratio; the first discharge time is based on The discharge current of the first discharge circuit is calculated so that the discharge of the second supercapacitor is less than the first preset ratio of the total voltage of the supercapacitor battery pack; the second discharge time is based on the The discharge current of the second discharge circuit is calculated so that the discharge of the first supercapacitor is less than a first preset proportion of the total voltage of the supercapacitor battery pack.

Further, the supercapacitor testing device also includes a constant current discharge module, which is used to discharge the supercapacitor battery pack through the constant current discharge circuit according to the discharge current and the discharge duration of the constant current discharge circuit, and record The third voltage of the supercapacitor battery pack and the fourth voltage of the supercapacitor battery pack after discharge; and for calculating the difference between the third voltage and the fourth voltage; and for judging whether the difference is is less than the difference threshold, the fourth judgment result is obtained.

Further, if the difference is greater than the difference threshold, the fourth judgment result is that the supercapacitor battery pack is abnormal; if the difference is smaller than the difference threshold, the fourth judgment result is that the supercapacitor battery pack is abnormal. The discharge of the pack is normal. Based on this, the constant current discharge module is also used to discharge the supercapacitor battery pack until the total voltage of the supercapacitor battery pack is less than the fifth voltage, and the output test result is the test passed.

Further, the supercapacitor testing device also includes a test counting module, which is used to initialize the number of tests to zero; it is also used to increase the count of the number of tests by one if the test result is a test pass after the output test result , and determine whether the number of times of testing reaches the set number of times; and if the number of tests does not reach the set number of times, re-set the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, and charge the supercapacitor battery The pack is charged and starts timing, and the test is re-executed until the number of said tests reaches the set number of times.

Further, the supercapacitor battery pack also includes an intermediate node, the intermediate node is located between the first supercapacitor and the second supercapacitor, and the intermediate node is the negative output of the first supercapacitor and the positive output of the second supercapacitor; the voltage of the intermediate node is used to describe the second voltage of the second supercapacitor, the voltage across the first supercapacitor is the first voltage, and the second A voltage has the same value as the real-time total voltage minus the second voltage.

For the specific limitations of the supercapacitor testing device, please refer to the relevant limitations of the above embodiments of the supercapacitor testing method, so details are not repeated here. Each module in the above-mentioned supercapacitor testing device can be fully or partially realized by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.

Embodiment three

Corresponding to the above embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program, the above supercapacitor testing method can be realized.

As shown in FIG. 10 , in some embodiments, the system can be used as the above-mentioned electronic device in any one of the above-mentioned embodiments for the supercapacitor testing method. In some embodiments, a system may include one or more computer-readable media (e.g., system memory or NVM/storage devices) having instructions and coupled to the one or more computer-readable media and configured to execute the instructions to One or more processors (eg, processor(s)) that implement a module such that the actions described in this application are performed.

For one embodiment, the system control module may include any suitable interface controller to provide any suitable interface.

The system control module may include a memory controller module to provide an interface to the system memory. A memory controller module may be a hardware module, a software module and/or a firmware module.

System memory may be used, for example, to load and store data and/or instructions for the system. For one embodiment, system memory may include any suitable volatile memory, such as suitable DRAM. In some embodiments, the system memory may include Double Data Rate Type Quad Synchronous Dynamic Random Access Memory (DDR4 SDRAM).

For one embodiment, the system control module may include one or more input/output (I/O) controllers to provide interfaces to NVM/storage devices and communication interface(s).

For example, NVM/storage devices may be used to store data and/or instructions. The NVM/storage device may include any suitable non-volatile memory (e.g., flash memory) and/or may include any suitable non-volatile storage device(s) (e.g., one or more hard disk drives (HDD ), one or more compact disc (CD) drives, and/or one or more digital versatile disc (DVD) drives).

NVM/storage devices may include storage resources that are physically part of the device on which the system is installed, or that may be accessed by the device without necessarily being part of the device. For example, NVM/storage devices may be accessed over a network via communication interface(s).

The communication interface(s) may provide the system with an interface to communicate over one or more networks and/or with any other suitable device. The system may communicate wirelessly with one or more components of the wireless network according to any of one or more wireless network standards and/or protocols.

For one embodiment, at least one of the processor(s) may be packaged with the logic of one or more controllers of the system control module (eg, a memory controller module). For one embodiment, at least one of the processor(s) may be packaged with the logic of the one or more controllers of the system control module to form a system-in-package (SiP). For one embodiment, at least one of the processor(s) may be integrated on the same die as the logic of the one or more controllers of the system control module. For one embodiment, at least one of the processor(s) may be integrated on the same die with the logic of the one or more controllers of the system control module to form a system on chip (SoC).

In various embodiments, a system may be, but is not limited to, a server, workstation, desktop computing device, or mobile computing device (eg, laptop computing device, handheld computing device, tablet computer, netbook, etc.). In various embodiments, the system may have more or fewer components and/or a different architecture. For example, in some embodiments, a system includes one or more cameras, a keyboard, a liquid crystal display (LCD) screen (including a touchscreen display), a non-volatile memory port, multiple antennas, a graphics chip, an application-specific integrated circuit (ASIC) ) and speakers.

It should be noted that the present application can be implemented in software and/or a combination of software and hardware, for example, it can be implemented by using an application specific integrated circuit (ASIC), a general-purpose computer or any other similar hardware devices. In one embodiment, the software program of the present application can be executed by a processor to realize the steps or functions described above. Likewise, the software program (including associated data structures) of the present application can be stored in a computer-readable recording medium such as RAM memory, magnetic or optical drive or floppy disk and the like. In addition, some steps or functions of the present application may be implemented by hardware, for example, as a circuit that cooperates with a processor to execute each step or function.

In addition, a part of the present application can be applied as a computer program product, such as a computer program instruction. When it is executed by a computer, the method and/or technical solution according to the present application can be invoked or provided through the operation of the computer. Those skilled in the art should understand that computer program instructions exist in computer-readable media in forms including but not limited to source files, executable files, installation package files, etc. Limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding post-installation program program. Here, a computer readable medium may be any available computer readable storage medium or communication medium that can be accessed by a computer.

Communication media includes the media whereby communication signals embodying, for example, computer readable instructions, data structures, program modules or other data are transmitted from one system to another. Communication media can include guided transmission media such as cables and wires (e.g., fiber optics, coaxial, etc.) and wireless (unguided transmission) media capable of propagating waves of energy, such as acoustic, electromagnetic, RF, microwave, and infrared . Computer readable instructions, data structures, program modules or other data may be embodied, for example, as a modulated data signal in a wireless medium such as a carrier wave or similar mechanism such as embodied as part of spread spectrum technology. The term "modulated data signal" means a signal that has one or more of its characteristics changed or set in such a manner as to encode information in the signal. Modulation can be analog, digital or mixed modulation techniques.

Here, an embodiment according to the present application includes an apparatus comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, triggering The operation of the device is based on the foregoing methods and/or technical solutions according to multiple embodiments of the present application.

Embodiment four

Corresponding to the above-mentioned embodiments, the present application further provides a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are used to execute the supercapacitor testing method.

In this embodiment, computer-readable storage media may include volatile and non-volatile, volatile, volatile, or Removable and non-removable media. For example, computer-readable storage media include, but are not limited to, volatile memories such as random access memories (RAM, DRAM, SRAM); and nonvolatile memories such as flash memory, various read-only memories (ROM, PROM, EPROM) , EEPROM), magnetic and ferromagnetic/ferroelectric memory (MRAM, FeRAM); and magnetic and optical storage devices (hard disks, tapes, CDs, DVDs); or other media known now or developed in the future capable of storing data for computer systems Computer readable information/data used.

Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once the basic inventive concept is understood. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (13)

1. A supercapacitor testing method, characterized in that, comprising: The supercapacitor battery pack is identified by the detection circuit, the supercapacitor battery pack includes a first supercapacitor and a second supercapacitor, the first supercapacitor is connected in series with the second supercapacitor, and the positive pole of the first supercapacitor As the positive pole output of the supercapacitor battery pack, the negative pole of the second supercapacitor is used as the negative pole output of the supercapacitor battery pack; Setting the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charging the supercapacitor battery pack and starting timing; In response to detecting that the voltage of the supercapacitor battery pack exceeds a first preset threshold, stop charging end timing, and determine whether the charging timing exceeds a second preset threshold; If the charging timer exceeds the second preset threshold, perform a voltage balance function test on the first supercapacitor and the second supercapacitor, and output a test result; Wherein, performing a voltage balance function test on the first supercapacitor and the second supercapacitor specifically includes: Through the first discharge circuit, the second supercapacitor is forced to discharge based on the first discharge time and is left to stand, after the standstill, it is judged whether the second voltage of the second supercapacitor is within the real-time total voltage of the supercapacitor battery pack Within the preset range, the second judgment result is obtained; In response to the second judgment result being yes, the first supercapacitor is forcibly discharged based on the second discharge time through the second discharge circuit and left to stand, and after standing, it is judged whether the first voltage of the first supercapacitor is within the specified range. In the preset range of the real-time total voltage of the supercapacitor battery pack, the third judgment result is obtained; The method also includes: In response to the third judgment result being yes, the supercapacitor battery pack is discharged through the constant current discharge circuit according to the discharge current and the discharge duration of the constant current discharge circuit, and the supercapacitor battery pack is recorded before discharging. The third voltage and the fourth voltage of the supercapacitor battery pack after discharge; calculating the difference between the third voltage and the fourth voltage; It is judged whether the difference is smaller than the difference threshold, and a fourth judgment result is obtained. 2. The supercapacitor testing method according to claim 1, wherein the detection circuit includes an in-position resistor and a thermistor, the in-position resistor is used to detect the in-position signal of the supercapacitor, and the thermal The sensitive resistor is used to detect the internal temperature of the supercapacitor battery pack, and the supercapacitor battery pack is identified by the detection circuit, including: Apply voltage to the on-position resistor and the thermistor through the detection circuit and detect the voltage of the on-position resistor and the thermistor to determine the resistance value of the on-position resistor and the thermistor Whether it is normal or not, get the first judgment result; Identifying the supercapacitor battery pack according to the first judgment result. 3 . The supercapacitor testing method according to claim 2 , wherein if the voltages of the on-site resistance and the thermistor deviate, the first judgment result is that the supercapacitor battery pack is abnormal. 4 . 4. The supercapacitor testing method according to claim 1, wherein the charging parameters include at least one of a charging voltage and a charging current, and the charging circuit setting corresponds to the charging of the supercapacitor battery pack. Parameter, described supercapacitor battery pack is charged and starts timing, comprises: Setting the charging voltage and charging current corresponding to the supercapacitor battery pack through the charging circuit, charging the supercapacitor battery pack and starting timing; If the charging timing does not exceed the second preset threshold, the method further includes: It is determined that the supercapacitor battery pack is abnormal, and it is determined that the current test fails. 5. The supercapacitor testing method according to claim 1, wherein said second supercapacitor is forced to discharge based on the first discharge time by the first discharge circuit and is left to stand, and the said second supercapacitor is judged after standing. Whether the second voltage of the second supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack, a second judgment result is obtained, including: Forcibly discharging the second supercapacitor based on the first discharge time through the first discharge circuit; After the first discharge time, leave the second supercapacitor at rest, and automatically balance the voltage between the second supercapacitor and the first supercapacitor through the voltage balancing circuit inside the supercapacitor battery pack; After the first resting time, re-measure the second voltage of the second supercapacitor and the real-time total voltage of the supercapacitor battery pack, and determine whether the second voltage is within the preset range of the real-time total voltage , the second judgment result is obtained. 6. The supercapacitor testing method according to claim 1, wherein the first supercapacitor is forced to discharge based on the second discharge time by the second discharge circuit and is left to stand, after standing, it is judged that the Whether the first voltage of the first supercapacitor is within the preset range of the real-time total voltage of the supercapacitor battery pack, a third judgment result is obtained, including: performing forced discharge on the first supercapacitor based on the second discharge time through the second discharge circuit; After the second discharge time, the first supercapacitor is left to stand, and the voltage between the first supercapacitor and the second supercapacitor is automatically balanced by a voltage balancing circuit inside the supercapacitor battery pack; After the second resting time, re-measure the first voltage of the first supercapacitor and the real-time total voltage of the supercapacitor battery pack, and determine whether the first voltage is within a preset range of the real-time total voltage , get the third judgment result. 7. The supercapacitor testing method according to claim 1, wherein the preset range includes a first preset ratio and a second preset ratio, and the first preset ratio is not greater than the the second preset ratio; The first discharge time is calculated according to the discharge current of the first discharge circuit, so that the discharge of the second supercapacitor is less than the first preset ratio of the total voltage of the supercapacitor battery pack; The second discharge time is calculated according to the discharge current of the second discharge circuit, so that the discharge of the first supercapacitor is less than a first preset percentage of the total voltage of the supercapacitor battery pack. 8. The supercapacitor testing method according to claim 1, wherein if the difference is greater than a difference threshold, the fourth judgment result is that the supercapacitor battery pack is abnormal; If the difference is less than the difference threshold, the fourth judgment result is that the supercapacitor battery pack is discharged normally, and after the fourth judgment result is obtained, the method further includes: Discharging the supercapacitor battery pack until the total voltage of the supercapacitor battery pack is less than the fifth voltage, and the output test result is that the test is passed. 9. The supercapacitor testing method according to any one of claims 1 to 8, wherein, before the identification of the supercapacitor battery pack by the detection circuit, the method further comprises: Initialize the number of tests to zero; If the test result is a test pass, after the output test result, the method further includes: Increase the count of the number of tests by one, and judge whether the number of tests reaches a set number of times; If the number of tests does not reach the set number of times, re-set the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charge the supercapacitor battery pack and start timing, and re-execute the test until the test The number of times reaches the set number of times. 10. The supercapacitor testing method according to claim 1, wherein the supercapacitor battery pack also includes an intermediate node, and the intermediate node is located between the first supercapacitor and the second supercapacitor, The intermediate node is the negative output of the first supercapacitor and the positive output of the second supercapacitor; The voltage of the intermediate node is used to describe the second voltage of the second supercapacitor, the voltage across the first supercapacitor is the first voltage, and the value of the first voltage is subtracted from the real-time total voltage go to the same value as the second voltage. 11. A supercapacitor testing device realizing the supercapacitor testing method of claim 1, wherein the device comprises: The detection module is used to identify the supercapacitor battery pack through the detection circuit, the supercapacitor battery pack includes a first supercapacitor and a second supercapacitor, the first supercapacitor is connected in series with the second supercapacitor, the The positive pole of the first supercapacitor is output as the positive pole of the supercapacitor battery pack, and the negative pole of the second supercapacitor is output as the negative pole of the supercapacitor battery pack; The charging module is used to set the charging parameters corresponding to the supercapacitor battery pack through the charging circuit, charge the supercapacitor battery pack and start timing; The management module is used to stop the charging end timing and determine whether the charging timing exceeds the second preset threshold in response to detecting that the voltage of the supercapacitor battery pack exceeds a first preset threshold; A voltage balance test module, configured to perform a voltage balance function test on the first supercapacitor and the second supercapacitor if the charging timer exceeds the second preset threshold, and output a test result; Wherein, performing a voltage balance function test on the first supercapacitor and the second supercapacitor specifically includes: Through the first discharge circuit, the second supercapacitor is forced to discharge based on the first discharge time and is left to stand, after the standstill, it is judged whether the second voltage of the second supercapacitor is within the real-time total voltage of the supercapacitor battery pack Within the preset range, the second judgment result is obtained; In response to the second judgment result being yes, the first supercapacitor is forcibly discharged based on the second discharge time through the second discharge circuit and left to stand, and after standing, it is judged whether the first voltage of the first supercapacitor is within the specified range. In the preset range of the real-time total voltage of the supercapacitor battery pack, the third judgment result is obtained; The method also includes: In response to the third judgment result being yes, the supercapacitor battery pack is discharged through the constant current discharge circuit according to the discharge current and the discharge duration of the constant current discharge circuit, and the supercapacitor battery pack is recorded before discharging. The third voltage and the fourth voltage of the supercapacitor battery pack after discharge; calculating the difference between the third voltage and the fourth voltage; It is judged whether the difference is smaller than the difference threshold, and a fourth judgment result is obtained. 12. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, characterized in that, when the processor executes the computer program, the computer program according to claims 1 to 10 is implemented. Any one of the supercapacitor test methods. 13. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the supercapacitor testing method according to any one of claims 1 to 10.

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