CN110988719A - A system and method for battery performance testing under multiple conditions - Google Patents
A system and method for battery performance testing under multiple conditions Download PDFInfo
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- CN110988719A CN110988719A CN201911383031.9A CN201911383031A CN110988719A CN 110988719 A CN110988719 A CN 110988719A CN 201911383031 A CN201911383031 A CN 201911383031A CN 110988719 A CN110988719 A CN 110988719A
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 7
- 238000011056 performance test Methods 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a system and a method for testing the performance of a storage battery under multiple conditions, wherein the system comprises a battery pack, an Uninterruptible Power Supply (UPS), a switching power supply T1 and a direct-current electronic load; the Input end of the switch power supply T1 is connected with a mains supply, the output end of the switch power supply T1 is connected with an Input interface Input + and an Input-of the UPS, and a battery interface Bat + and a battery interface Bat-of the UPS are connected with the battery pack; output interfaces Output + and Output-of the UPS are connected with power supply interfaces X11 and X12 of a DC electronic load; the voltage detection interfaces X21 and X22 of the direct current electronic load are connected with a battery pack; the direct current electronic load is used for adjusting the load and detecting the voltage of the battery pack; and a power protection switch F1 is arranged between the switching power supply T1 and the mains supply. The multi-condition storage battery performance testing system and method provided by the invention effectively solve the problems of complicated construction and replacement of testing load tools and single testing environment, and improve the testing efficiency and the accuracy of testing data.
Description
Technical Field
The invention belongs to the field of electric power product testing, and particularly relates to a multi-condition storage battery performance testing system and method.
Background
In the electric control system, when the mains supply input is cut off, the storage battery is used as a backup power supply to continuously supply power to control equipment such as a PLC (programmable logic controller) and the like, the safety, the process control and the data recording and storage within a limited time of the system are ensured, and the performance of the storage battery plays a key role at the moment. However, when testing the storage battery, because of the difference between the power supply load and the required power supply time, the following disadvantages exist in the ordinary test: the test load tool is complicated to build and replace, and the test efficiency is low; the environmental test data is single, and the performance of the environmental test data cannot be fully verified; the experimental data are inconvenient to look over, and the service life of the battery is influenced.
Disclosure of Invention
In view of the above, the present invention provides a multi-condition battery performance testing system and method, which is designed to overcome the above-mentioned drawbacks of the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a multi-condition storage battery performance test system comprises a battery pack, an Uninterruptible Power Supply (UPS), a switching power supply T1 and a direct-current electronic load;
the UPS is provided with Input interfaces Input + and Input-, Output interfaces Output + and Output-, and battery interfaces Bat + and Bat-; the electronic load is provided with power supply interfaces X11 and X12, voltage detection interfaces X21 and X22 and state feedback interfaces X31 and X32;
the Input end of the switch power supply T1 is connected with a mains supply, the output end of the switch power supply T1 is connected with an Input interface Input + and an Input-of the UPS, and a battery interface Bat + and a battery interface Bat-of the UPS are connected with the battery pack;
output interfaces Output + and Output-of the UPS are connected with power supply interfaces X11 and X12 of a DC electronic load; the voltage detection interfaces X21 and X22 of the direct current electronic load are connected with a battery pack; the direct current electronic load is used for adjusting the load and detecting the voltage of the battery pack;
and a power protection switch F1 is arranged between the switching power supply T1 and the mains supply.
Further, the battery pack protection circuit is included; the battery pack protection circuit comprises a switching power supply T2 and a contactor KM 1; the input end of the switching power supply T2 is connected with a mains supply, the output end of the switching power supply is connected with a contactor KM1, and a contactor KM1 is connected with state feedback interfaces X31 and X32 of a direct-current electronic load; the 1/2 and 3/4 contacts of the contactor KM1 are arranged on a circuit for connecting battery interfaces Bat + and Bat-of the UPS with the battery pack; and a power protection switch F2 is arranged between the switching power supply T2 and the mains supply.
Further, a PC device is included; the contactor KM1 is connected with PC equipment and supplies power to the PC equipment; the direct current electronic load is also provided with PC end communication interfaces X41 and X42; and PC end communication interfaces X41 and X42 of the direct current electronic load are connected with PC equipment.
Further, the uninterruptible power supply UPS is also connected with the PC equipment.
Further, a constant temperature and humidity box U2 is included; the battery pack is arranged in a constant temperature and humidity box U2.
A test method based on a multi-condition storage battery performance test system comprises the following steps:
s1, placing a battery pack in a constant temperature and humidity box, and setting the temperature and humidity of the constant temperature and humidity box;
s2, setting a test mode of the electronic load;
s3, closing power protection switches F1 and F2, and charging the battery pack by the charging circuit;
s4, after the battery pack is fully charged, disconnecting a power supply protection switch F1, and testing the discharge performance of the battery;
s5, changing any one condition of the step S1 or S2, and repeating the step S1 to the step S4.
Further, step S4 includes a battery pack protection function, and the specific method is as follows:
s401, setting a battery pack protection voltage V;
s402, detecting the voltage V' of a battery in real time by a direct current electronic load;
and S403, when the V' is smaller than the V, the contacts 1/2 and 3/4 of the contactor KM1 are opened, so that the detection circuit is disconnected.
Compared with the prior art, the invention has the following advantages:
the problems that the test load tool is complicated to build and replace and the test efficiency is low are effectively solved; the environmental test data is single, and the performance of the environmental test data cannot be fully verified; the test data are inconvenient to look over, the service life of the battery is influenced, and the like, so that the test efficiency of the test and the accuracy of the test data are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
fig. 1 is a circuit diagram of a multi-condition battery performance testing system according to an embodiment of the present invention;
fig. 2 is a flow chart of a multi-condition battery performance testing system according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
As shown in fig. 1 and fig. 2, a multi-condition battery performance testing system includes a battery pack, an uninterruptible power supply UPS, a switching power supply T1, and a dc electronic load;
the UPS is provided with Input interfaces Input + and Input-, Output interfaces Output + and Output-, and battery interfaces Bat + and Bat-; the electronic load is provided with power supply interfaces X11 and X12, voltage detection interfaces X21 and X22 and state feedback interfaces X31 and X32;
the Input end of the switch power supply T1 is connected with a mains supply, the output end of the switch power supply T1 is connected with an Input interface Input + and an Input-of the UPS, and a battery interface Bat + and a battery interface Bat-of the UPS are connected with the battery pack;
output interfaces Output + and Output-of the UPS are connected with power supply interfaces X11 and X12 of a DC electronic load; the voltage detection interfaces X21 and X22 of the direct current electronic load are connected with a battery pack; the direct current electronic load is used for adjusting the load and detecting the voltage of the battery pack;
and a power protection switch F1 is arranged between the switching power supply T1 and the mains supply.
The battery pack protection circuit is included; the battery pack protection circuit comprises a switching power supply T2 and a contactor KM 1; the input end of the switching power supply T2 is connected with a mains supply, the output end of the switching power supply is connected with a contactor KM1, and a contactor KM1 is connected with state feedback interfaces X31 and X32 of a direct-current electronic load; the 1/2 and 3/4 contacts of the contactor KM1 are arranged on a circuit for connecting battery interfaces Bat + and Bat-of the UPS with the battery pack; and a power protection switch F2 is arranged between the switching power supply T2 and the mains supply.
Comprises a PC device; the contactor KM1 is connected with PC equipment and supplies power to the PC equipment; the direct current electronic load is also provided with PC end communication interfaces X41 and X42; and PC end communication interfaces X41 and X42 of the direct current electronic load are connected with PC equipment.
The UPS is also connected with the PC equipment.
Comprises a constant temperature and humidity box U2; the battery pack is arranged in a constant temperature and humidity box U2.
A test method based on a multi-condition storage battery performance test system comprises the following steps:
s1, placing a battery pack in a constant temperature and humidity box, and setting the temperature and humidity of the constant temperature and humidity box;
s2, setting a test mode of the electronic load;
s3, closing power protection switches F1 and F2, and charging the battery pack by the charging circuit;
s4, after the battery pack is fully charged, disconnecting a power supply protection switch F1, and testing the discharge performance of the battery;
s5, changing any one condition of the step S1 or S2, and repeating the step S1 to the step S4.
The step S4 includes a battery pack protection function, and the specific method is as follows:
s401, setting a battery pack protection voltage V;
s402, detecting the voltage V' of a battery in real time by a direct current electronic load;
and S403, when the V' is smaller than the V, the contacts 1/2 and 3/4 of the contactor KM1 are opened, so that the detection circuit is disconnected.
As shown in fig. 1, F1 is a power protection switch, and T1 is a 24VDC switch power supply (changing 220VAC to 24VDC) to charge the battery pack, ensuring that the battery pack is in a full power state before testing; f2 is a power protection switch, T2 is a 24VDC switching power supply, and 24V power supply is provided for PC equipment; t3 is a DC UPS series uninterrupted power supply, and provides a stable and reliable 24V power supply for a test loop; u1 is a DC electronic load, and can be used for four tests of constant current mode, constant voltage mode, constant resistance mode and constant power mode; the U2 constant temperature and humidity box can simulate the discharge of an actual industrial control battery;
x5:1, 2, 3.. N and X5:1 ', 2 ', 3.. N ' are positive and negative battery terminals, respectively, and the batteries G1, G2, G3, etc. can be connected to the corresponding terminals;
x5: and the N + 1' are voltage measuring terminals which can be connected with a direct current electronic load to measure the voltage value of the battery in the discharging process.
The 220V power supply is converted into 24V power by a T1 switching power supply, and the battery pack is charged by an uninterrupted power supply T3. The T3 ups has 3 state feedbacks:
t3:11/12/14 alarm feedback: when the commercial power input is disconnected, the 11/14 contact is changed from normally open to normally closed;
t3:21/22/24 battery mode: the battery supplies power to the back end circuit, and the 21/24 contact is changed from normally open to normally closed
T3:31/32/34 charging mode: 31/34 contact is normally open to normally closed when charging the battery;
the switching power supply T2 converts 220V into 24Vdc, provides 24V power for a coil of KM1 and PC display, and XP1 and XP2 are 24V power supply terminals and can provide 24V power supply for related tests in the later period.
Closing the F1 to charge the battery before testing, and performing subsequent battery performance testing after charging is finished;
adjusting the electronic load setting value according to the actual load size, closing an F2 switch, electrifying a KM1 coil, and closing KM1:1/2 and 3/4 contacts; and the mains supply input is cut off, and the storage battery is used as a standby power supply to supply power for the electronic load through the T3 uninterruptible power supply. The uninterrupted power supply T3 has battery feedback of alarm, battery mode and charging mode, and can observe and record corresponding test data through the PC terminal.
During actual work, the battery pack, the direct current electronic load and the power supply module are connected by lines according to a circuit diagram, and a universal meter is used for checking the circuit to ensure that the circuit is connected correctly; placing the battery pack in a constant temperature and humidity box, setting the temperature of the constant temperature and humidity box, setting the temperature to be-20 ℃ according to a cooling curve, and setting the cooling rate to be 1K/min to reach the low temperature of-20 ℃; keeping the temperature constant for 8 hours; after the low-temperature storage for 8 hours is finished, continuously keeping the constant-temperature constant-humidity box at-20 ℃; carrying out low-temperature discharge test; setting the electronic load, and selecting a constant current mode, a constant voltage mode, a constant resistance mode and a constant power mode according to the actual load condition, wherein if the electronic load is selected as a constant power output mode, the output power is set to be 480W; closing the 24V power supply module protection switches F1 and F2, wherein the power supply loop F1 supplies power to the electronic load, the coil of the contactor KM1 is electrified, and the corresponding contacts 1-2 and 3-4 are closed; when the discharge performance of the battery is tested, the miniature circuit breaker F1 is disconnected, at the moment, the battery pack stably outputs 24Vdc to supply power to the electronic load through the uninterruptible power supply, and relevant information such as discharge voltage, discharge duration and the like can be displayed and observed through the PC.
According to the scheme, the load of an actual electric control cabinet is replaced by the Meirno M9713 electronic load, the load can be simulated to carry out related experimental tests in a constant current mode, a constant voltage mode, a constant resistance mode and a constant power mode, the test data is relatively accurate, a resistor does not need to be manually used for circuit building according to the load size, and the overall test efficiency is improved; the battery pack is placed in the constant temperature and humidity box, the running temperature of the actual electric control cabinet is simulated by adjusting the temperature of the constant temperature and humidity box, the performance of the battery is fully verified, and the battery is guaranteed to meet the use requirement of a control system. The direct-current electronic load is in communication connection with the PC end, the performance test condition of the direct-current electronic load can be directly observed through the PC end, test data can be exported after the test is finished, an operator is not required to record relevant test data in real time, the discharge state of the battery is controlled through a relevant control loop, and the problem that the service life of the battery is influenced due to deep discharge of the battery is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911383031.9A CN110988719A (en) | 2019-12-27 | 2019-12-27 | A system and method for battery performance testing under multiple conditions |
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| CN201911383031.9A CN110988719A (en) | 2019-12-27 | 2019-12-27 | A system and method for battery performance testing under multiple conditions |
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| CN111579980A (en) * | 2020-05-26 | 2020-08-25 | 天津瑞能电气有限公司 | Speed relay integrated test system |
| CN112698237A (en) * | 2020-12-30 | 2021-04-23 | 天津瑞能电气有限公司 | Power supply redundancy module inspection system |
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