CN214122351U - Fill electric pile detection device and system - Google Patents
Fill electric pile detection device and system Download PDFInfo
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- CN214122351U CN214122351U CN202022168956.6U CN202022168956U CN214122351U CN 214122351 U CN214122351 U CN 214122351U CN 202022168956 U CN202022168956 U CN 202022168956U CN 214122351 U CN214122351 U CN 214122351U
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Abstract
The utility model provides a fill electric pile detection device, including control system and with the control system electricity is connected for the power supply system of control system power supply. The control system comprises the main control unit, and an electric parameter acquisition module, a guidance monitoring module, a storage module and a communication module which are respectively connected with the main control unit. The electric parameter acquisition module is used for acquiring voltage signals and current signals of the charging pile and sending the voltage signals and the current signals to the main control unit. The main control unit calculates, processes and analyzes the acquired data information, and packs and stores the result in the storage module or sends the result through the communication module. The utility model also provides a fill electric pile detecting system, fill electric pile detection device and fill the long-range application platform of electric pile networking platform information including being used for receiving. The utility model discloses a fill electric pile detection device and system, it is small, and stability is good, and real-time detection avoids the waste of the energy.
Description
Technical Field
The utility model relates to a check out test set technical field especially relates to a fill electric pile detection device and system.
Background
With the continuous development of society, the development of new energy automobiles is overwhelming in recent years and gradually becomes the mainstream of the times. It is the same with gasoline automobile will refuel, and electric automobile will charge naturally, popularizes electric automobile's the electric pile that fills and optimizes its each item performance to shorten to charge for a long time by a wide margin, improve the use of filling electric pile and experience, improve the convenience, be the important way that promotes electric automobile development.
Fill electric pile's function and be similar to the tanker aircraft of the inside of filling station, can be according to the electric automobile of different voltage classes for various models and charge, the electric pile that fills of installation is for the direct current fills electric pile many in general charging station, and the electric pile that fills for alternating current of installing in parking area parking stall is many. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging an electric automobile, namely a charging gun commonly known by people. Whether the performance of charging pile is good or bad, whether the safety directly influences the service life of the new energy electric vehicle power storage battery, even threatens the personal of the charging pile user and the safety and reliability of the vehicle and the power grid in severe conditions, so that the charging pile needs to be detected to monitor the performance of the charging pile and find faults in time.
At present, the charging pile detection usually adopts field detection, detection equipment is transported to the field, and detection work is implemented on each charging pile. Through tester simulation electric automobile BMS and control guide circuit with fill electric pile and carry out the interconnection, the rethread load is adjusted filling electric pile output current to the test of various operating modes is carried out to the mode of simulation. This approach has several disadvantages: 1) the detection equipment and the matched load are large in size, special transportation is needed by vehicles, the load weight is heavy, the load weight of one 60kW is close to 60kg, and the carrying is extremely laborious; 2) each device can only test one charging pile at one time, the detection time is long, and the testing time of a single charging pile is about 1.5 hours according to the field detection requirement. After each test, equipment needs to be transferred to the next charging pile for wiring again, so that the next test can be carried out, and the detection efficiency is low; 3) the electric energy that fills electric pile output in the test process is whole to be turned into the heat consumption and falls, and every fills electric pile test once power consumption and about 5kWh, has caused very big energy waste.
Disclosure of Invention
For solving exist not enough among the prior art, the utility model provides a fill electric pile detection device and system, should fill electric pile detection device and system small, stability is good, can carry out real-time detection at the electric pile during operation that fills, has avoided the waste of the energy.
In order to achieve the above object, the utility model adopts the following technical scheme:
the charging pile detection device is arranged between a charging pile and a charging gun and comprises a control system and a power supply system which is electrically connected with the control system and used for supplying power to the control system; the control system comprises a main control unit, and an electric parameter acquisition module, a guidance monitoring module, a storage module and a communication module which are respectively connected with the main control unit;
the electric parameter acquisition module is used for acquiring an output voltage signal and a current signal of the charging pile, accumulating charging electric energy in stage time and sending the voltage signal, the current signal and the electric energy information to the main control unit;
the guiding monitoring module comprises a first acquisition module and a second acquisition module, and the first acquisition module is used for acquiring a detection point 1 signal CC1, a detection point 2 signal CC2 and a CAN communication message signal of the direct current charging pile; the second acquisition module is used for acquiring the PWM waveform duty ratio of a signal CP at a detection point 2 and a connection confirmation signal CC at a detection point 3 of the alternating-current charging pile; the guidance monitoring module sends the collected information to the main control unit;
the main control unit is used for receiving and processing the voltage signal, the current signal, the power signal, the CP and CC signals, and the CC1, the CC2 and the CAN signals; and sending the processing result to the storage module for storage and uploading the processing result to a remote application platform through the communication module.
The further improvement of the technical scheme is as follows:
the power supply system comprises a first external module connected with an external power supply, a battery module, a second external module connected with the charging pile, a power supply selection circuit used for selecting a power supply signal, and a DC/DC module connected with the power supply selection circuit and used for converting the power supply signal into multi-path direct current voltage, wherein the power supply selection circuit is connected with the first external module, the battery module and the second external module.
The electric parameter acquisition module comprises a voltage measurement unit and a current measurement unit which are sequentially connected; the voltage measuring unit comprises a resistance voltage dividing network, a gear switching component, an operational amplifier, a gain adjusting network, a filter network and an analog-to-digital converter; the current measuring unit comprises a current transformer, a sampling resistor, a gear control component, a gain adjusting network, a filter network and an analog-to-digital converter.
The memory module includes a non-volatile memory.
The communication module comprises a wireless communication unit and a wired communication unit, and the wired communication unit comprises a multi-channel RS485 interface control module, a multi-channel RS232 interface control module and an Ethernet port control module; the wireless communication unit comprises a Bluetooth communication module, a WiFi communication module, a 4G communication module, a 5G communication module and an RF communication module.
The control system further comprises an environment acquisition module, wherein the environment acquisition module comprises a temperature sensor, a humidity sensor and an air pressure sensor which are in communication connection with the main control unit.
The control system also comprises a time and position acquisition module, and the time and position acquisition module comprises a GPS time service locator which is in communication connection with the main control unit.
The control system further comprises a video acquisition module, and the video acquisition module comprises a camera in communication connection with the main control unit.
The utility model also provides a fill electric pile detecting system, fill electric pile detecting device including the aforesaid, fill electric pile detecting system still include with fill electric pile detecting device communication connection's remote application platform, remote application platform is used for receiving fill electric pile detecting device and fill the information that electric pile networking platform sent.
Furthermore, the charging pile detection system comprises a communication module, a memory, a chip and a human-computer interaction interface which are matched with the charging pile detection device.
By the technical scheme of the utility model, the utility model provides a fill electric pile detection device comprises a plurality of modules, its small in size, easily transport, it examines time measuring to filling electric pile, need not to set up the analog load, but directly monitors new energy automobile's charging process, acquires data in real time, has not only avoided the waste of the energy, and the data that acquires moreover are more true, and can not influence the normal operation work that fills electric pile. Through the extensive arrangement to this fill electric pile detection device, can also detect many electric piles of filling simultaneously, improve detection efficiency greatly. This fill electric pile detecting system can realize filling the real-time on-line measuring work of electric pile, has improved the mastery degree to filling the electric pile performance, provides powerful data support for relevant research department, still can avoid the consumption of witnessed inspections' manpower, material resources simultaneously.
Drawings
Fig. 1 is the utility model discloses fill electric pile detection device's topological diagram.
Fig. 2 is a topological diagram of a power supply system according to an embodiment of the present invention.
Fig. 3 is the utility model discloses fill electric pile detecting system's work schematic diagram.
Fig. 4 is a working schematic diagram of the working site of the utility model.
The meaning of the reference symbols in the drawings is:
1-charging pile; 2-charging pile detection device.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 and fig. 2, it does the utility model discloses fill electric pile detection device's component schematic diagram, this embodiment fill electric pile still can be for charging machine.
As shown in fig. 2, the power supply system includes a first external module connected to an external power source, a battery module, a second external module connected to the charging pile, a power selection circuit for selecting a power supply signal, and a DC/DC module connected to the power selection circuit and converting the power supply signal into a plurality of DC voltages, wherein the power selection circuit is connected to the first external module, the battery module, and the second external module.
The power supply system supports three power supply modes of external power supply, internal battery power supply and charging pile 1 power supply, and the power supply priority level is reduced in sequence; the power selection circuit selects one circuit with high priority level from the input circuits according to the priority level, converts the selected circuit into a plurality of direct current voltages required by the charging pile detection device 2 through the DC/DC module, and provides the direct current voltages for each unit module of the control system.
Wherein, fill electric pile power supply and refer to, to electric automobile non-vehicle machine that charges, in the charging process, detection device can be with the help of auxiliary power source 12V power supply. When the alternating current charging pile is detected, the power supply system firstly converts 220V voltage into 12V direct current voltage, and then carries out priority comparison with other two-path input circuits. The 2 consumption of charging pile detection device of this embodiment is no longer than 10W, even can also support the device continuous operation more than 24 hours when relying on inside monocell to supply power, and the battery monitor of device inside can send out the early warning suggestion when the electric quantity is less than 20%.
The power selection circuit comprises three selection units and a comparison circuit, wherein one connecting end of each selection unit is connected with one power supply end, the other connecting end of each selection unit is connected with an output power supply end, and a control end of each selection unit is connected with the other power supply end. The input end of the comparison circuit is respectively connected with the power supply ends and used for comparing the three power supplies and outputting a comparison result through the output end.
The control system comprises a main control unit, and an electric parameter acquisition module, a communication module, a storage module, a guidance monitoring module and an environment acquisition module which are in communication connection with the main control unit.
The electric parameter acquisition module comprises a voltage measurement unit and a current measurement unit which are sequentially connected and is used for converting the output voltage and the current of the charging pile 1 to be measured into voltage signals which can be measured by an analog-to-digital converter (AD) through a circuit according to a certain proportion, and the voltage signals can reflect the change of the external voltage signals to be measured in real time.
The voltage measuring unit consists of a high-stability precision resistor voltage-dividing network, a gear switching component, a high-precision operational amplifier, a gain adjusting network, a filter network and an analog-digital converter (16-bit high-precision AD).
The current measuring unit consists of a high-precision current transformer, a sampling resistor, a gear control component, a gain adjusting network, a filter network and an analog-to-digital converter.
The electric parameter acquisition module transmits the measured voltage and current data to the main control unit, and after digital filtering, the main control unit calculates and analyzes the transmitted data to obtain information such as voltage, current, power, electric energy and the like. When the input alternating current is detected, relevant parameters such as active power, reactive power, phase and harmonic waves are calculated through an FFT principle. The input voltage range of the charging pile detection device 2 in this embodiment is: alternating current is 0-380V, and direct current is 0-1000V; the range of input currents is: alternating current is 0-70A; direct current is 0-250A. The calculation accuracy is 0.1 level.
The storage module adopts a nonvolatile ferroelectric memory, 1000 pieces of charging information can be preset, and the power failure protection function is realized. Compared with the traditional EEPROM, the ferroelectric memory has the advantages of no limitation on the number of reading and writing times, high writing speed, no writing waiting, more electricity saving operation by byte operation and writing power consumption of 1/20 of the EEPROM.
As shown in fig. 3, the communication module includes a wireless communication unit and a wired communication unit, and the wired communication unit includes a multi-path RS485 interface control module, a multi-path RS232 interface control module, and an ethernet port control module; the wireless communication unit comprises a Bluetooth communication module, a WiFi communication module, a 4G communication module, a 5G communication module and an RF communication module. Various transmission modes support the function of continuous transmission in a disconnected network.
The guide monitoring module comprises a first acquisition module and a second acquisition module, and the first acquisition module is used for acquiring control guide signals CC1, CC2 and CAN message signals of the direct current charging pile; the second acquisition module is used for acquiring the duty ratio of a control pilot signal CP and the voltage of a connection confirmation signal CC of the alternating-current charging pile.
The guiding monitoring module transmits the collected monitoring information to the main control unit, the main control unit processes and analyzes data, whether the connection confirmation signal of the charging pile 1 is correct is judged, and if the connection confirmation signal is correct, a charging system starting program is started; if the charging pile is incorrect, the charging pile cannot enter a subsequent charging program; after entering a charging starting program, the main control unit can continuously judge whether the charging time sequence of the charging pile is correct, if so, the circuit of the charging pile 1 is switched on, and the charging pile can be charged normally; if the state is incorrect, the state is judged to be an emergency fault state, the main control unit simulates and controls the abnormal pilot signal, and the charging pile 1 is forced to stop charging.
The environment acquisition module comprises a plurality of temperature sensors, humidity sensors and air pressure sensors which are in communication connection with the main control unit. The environment acquisition module is used for detecting the temperature, the humidity and the air pressure of the surrounding environment of the charging pile 1 to be detected and the temperature information of the charging pile charging gun seat and the charging gun head, and transmitting the detected information to the main control unit, the main control unit analyzes and judges the information transmitted by the environment acquisition module, and when the detected temperature of the charging gun seat or the charging gun head exceeds a preset range, the main control unit simulates and controls a guide signal to be abnormal, and the charging pile 1 is forced to stop charging.
The main control unit adopts STM32F4 series high-performance microcontrollers with ST CortexTM-M4 as a kernel and has a main frequency of 168M. The main control unit is responsible for processing, analyzing, packing and storing the acquired data information or sending the data information through the communication module.
Particularly, the main control unit monitors control guide signals, charging voltage, current and communication CAN messages in real time according to the charging flow rules in the national standard, and alarms or forcibly stops the machine according to the grade when the abnormality is found.
Embodiment 3, the charging pile detection device 2 that this embodiment provided not only includes all parts of embodiment 2, still includes video acquisition module and display module.
Video acquisition module includes the camera with main control unit communication connection, mainly used detects the collection of filling the picture and the image information of electric pile 1 job site, if fill electric pile 1's data plate information etc. accessible AI module automatic identification fills electric pile's each item parameter to leading-in main control unit. In the test process, the camera can be connected with the field camera at the background or through the APP to check in real time, so that the authenticity and the fairness of the whole charging process are guaranteed.
The display module can observe the information content detected by the main control unit in real time through the display screen.
Embodiment 4 provides a charging detection system, and the charging detection system includes any one of the charging pile detection devices in the three embodiments, and further includes a remote application platform in communication connection with the charging pile detection device. The charging pile detection system comprises a communication module, a storage, a chip and a human-computer interaction interface which are matched with the charging pile detection device.
The remote application platform receives, stores, analyzes and shows the data uploaded by the charging pile detection device 2 to complete remote monitoring, and meanwhile receives the running data of the charging pile transmitted by the charging pile networking platform, and performs contrastive analysis on the data so as to enable the detection data to be more reliable.
The specific detection method of the above embodiment is as follows:
and (3) appearance detection: and the video acquisition module is used for acquiring relevant characteristics and uploading the characteristics to the main control unit, and the main control unit transmits the data to the remote application platform.
Charging pile error detection: the charging process of charging the electric pile 1 at each time is regarded as a testing process, and the electric energy collected by the electric pile detection device 2 and the charging data transmitted by the charging pile networking platform are compared through an electric energy method to calculate the metering error of the charging pile 1 in the charging process.
When the standard electric energy meter and the detected charger work continuously, the working error of the detected charger is calculated according to the following formula:
the working error is (E' -E)/E × 100%;
and connecting the detected charger in series with a current line and connecting a voltage line in parallel of the current line and the voltage line of the detecting device, and applying a maximum load to operate for a period of time. After the operation is stopped, calculating the indication error of the detected charger according to the following formula:
the error in the value is (E' -E)/E × 100%.
Wherein: e' is the charging electric quantity of the charging pile transmitted by the charging pile networking platform; e is the electric quantity that charges of the electric pile that fills electric pile detection device and monitor.
Charging pile payment amount error verification: and multiplying the charging electric energy in the time period in the settlement information of the pile transmitted by the charging pile networking platform by the charging electricity price in the corresponding time period and adding related service fees to obtain the amount payable determined by the charging pile networking platform, comparing the amount with the payment amount displayed by the charging pile in the charging process, and determining the difference of the amount payable and the payment amount as the verification error of the charging process.
And (3) calibrating clock errors: and comparing the Beijing time displayed by the charging pile networking platform when the charging of the charging pile is finished once with the Beijing time displayed by the charging pile detection device 2 when the charging is finished once, and judging the clock error of the charging pile.
Clock error T' -T |)
Wherein: t' is the time displayed by the charging pile networking platform; and T is the time recorded by the charging pile detection device.
The remote application platform acquires relevant operation data of the charging piles in the charging pile networking platform through an interface protocol between the remote application platform and the charging pile networking platform, wherein the data comprises basic information of the charging piles, such as ID, voltage, current, power, grade, constant and the like of the charging piles; the charging system also comprises information of the charging process of the charging pile, such as rate time interval, time interval unit price, charging process curve, charging settlement information and the like.
As shown in fig. 3 and fig. 4, the utility model provides a fill electric pile detection device and system, the charging process that the utilization was filled in the electric pile operation detects, adopt "on-the-spot collection module + internet" platform, the method of examining simultaneously of many piles, realize the long-range short-term test to filling electric pile to the process data that fills electric pile and charge carries out the analysis, this testing process can not cause the waste of the energy, can not influence the normal operation that fills electric pile yet, the development strategy of the green modernization of the country has been fit for.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
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| CN202022168956.6U CN214122351U (en) | 2020-09-28 | 2020-09-28 | Fill electric pile detection device and system |
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| CN202022168956.6U CN214122351U (en) | 2020-09-28 | 2020-09-28 | Fill electric pile detection device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047401A (en) * | 2021-11-29 | 2022-02-15 | 国网北京市电力公司 | An automatic detection device for a DC charging pile tester |
| CN114295925A (en) * | 2022-03-11 | 2022-04-08 | 江苏东方四通科技股份有限公司 | Charging pile performance testing method and system |
-
2020
- 2020-09-28 CN CN202022168956.6U patent/CN214122351U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047401A (en) * | 2021-11-29 | 2022-02-15 | 国网北京市电力公司 | An automatic detection device for a DC charging pile tester |
| CN114295925A (en) * | 2022-03-11 | 2022-04-08 | 江苏东方四通科技股份有限公司 | Charging pile performance testing method and system |
| CN114295925B (en) * | 2022-03-11 | 2022-06-14 | 江苏东方四通科技股份有限公司 | Charging pile performance test method and system |
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Effective date of registration: 20241216 Address after: 518000 14th floor, block a, Kelu building, Baoshen Road, North Science Park, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN CLOU PRECISION INSTRUMENT Co.,Ltd. Country or region after: China Patentee after: SHENZHEN CLOU INTELLIGENCE INDUSTRY CO.,LTD. Address before: 518000 14th floor, block a, Kelu building, Baoshen Road, North Science Park, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN CLOU PRECISION INSTRUMENT Co.,Ltd. Country or region before: China |
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