CN217981763U

CN217981763U - Test platform for simulating multiple direct current charging terminals

Info

Publication number: CN217981763U
Application number: CN202221888224.7U
Authority: CN
Inventors: 于智华; 徐大昱; 高涛涛; 杨佩辉
Original assignee: Shaanxi Green Energy Electronic Technology Co Ltd
Current assignee: Shaanxi Green Energy Electronic Technology Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-06
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a test platform for simulating a plurality of direct current charging terminals; the method comprises the following steps: the charging control unit is respectively connected with a charger, a vehicle BMS simulator, a miniature circuit breaker, an address setting unit, a switch and an auxiliary power supply; the auxiliary power supply is connected with the vehicle BMS simulator; the charger is connected with the direct current contactor. The utility model can flexibly simulate charging terminals with different quantities, so that the test platform can be quickly and conveniently built; meanwhile, the device has the characteristics of small volume and mobility, and can adapt to more test sites; the testing platform can reduce the number of real terminals in testing, is suitable for different chargers, and has certain economic benefit.

Description

Test platform for simulating multiple direct current charging terminals

Technical Field

The utility model belongs to the technical field of charging system tests, a test platform who simulates a plurality of direct current charging terminal is related to.

Background

The charging equipment can be divided into an integrated charger and a split charger according to the structure. The split charger structurally separates the power conversion unit from the charging terminal, and the power conversion unit and the charging terminal are connected through a cable. The charging terminal has a single gun terminal and a multi gun terminal.

Along with the higher and higher power of the charger, more and more charging terminals can be configured by the split type charger. For example, 720kW charging piles on the market can be configured with 12 double-gun charging terminals at most, namely 24-gun charging guns. When testing personnel perform project tests such as multi-gun starting charging, power module distribution strategy and charging data monitoring, a plurality of terminals with different quantities are required to be matched, the method is limited by an experimental field and test convenience, and the fact that real charging terminals are used completely is unrealistic. Therefore, a test platform capable of simulating a plurality of dc charging terminals is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem among the prior art, provide a simulate a plurality of direct current charge terminal's test platform, can simulate different quantity charge terminal in a flexible way, reduce true terminal quantity in the test, improve the convenience of test.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a test platform for simulating a plurality of direct current charging terminals comprises: the device comprises an auxiliary power supply, a test unit, a direct current contactor and a charger;

the test unit comprises a charging control unit, a vehicle BMS simulator, a miniature circuit breaker, a switch and an address setting unit;

the charging control unit is respectively connected with the charger, the vehicle BMS simulator, the miniature circuit breaker, the address setting unit, the switch and the auxiliary power supply; the auxiliary power supply is connected with the vehicle BMS simulator; the charger is connected with the direct current contactor.

The utility model discloses a further improvement lies in:

the vehicle BMS simulator is used for setting parameters related to the rated capacity of the battery, the charging requirement, the SOC value, the maximum allowable voltage of the vehicle and the temperature of the battery and testing a communication protocol.

The address setting unit is realized by a 5-bit dial switch and is used for setting the address of the charging control unit.

And the charging control unit, the vehicle BMS simulator and the charger are subjected to data interaction through the CAN bus.

The miniature circuit breaker is used for simulating the gun plugging and unplugging state of the charging terminal, and the switch is used for simulating the fault of the charging terminal. The test units are 24 groups.

The charger and the direct current contactor carry out electric energy transmission through a power line, and the direct current contactor is externally connected with an output port. The output port is a test port and is used for connecting the oscilloscope and the power analyzer. And the test units are in hand-in-hand connection communication through the CAN communication line. The auxiliary power supply is used for supplying power to the charging control unit.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model respectively connects the charging control unit with the charger, the vehicle BMS simulator, the miniature circuit breaker, the address setting unit, the switch and the auxiliary power supply; the auxiliary power supply is connected with the vehicle BMS simulator; the charger is connected with the direct current contactor; the utility model provides a test unit can be through the mutual communication of connecting of the control unit that charges. The utility model can flexibly simulate charging terminals with different quantities, so that the test platform can be quickly and conveniently built; meanwhile, the device has the characteristics of small volume and mobility, and can adapt to more test sites; the testing platform can reduce the number of real terminals in testing, is suitable for different chargers, and has certain economic benefit.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a testing platform for simulating a plurality of dc charging terminals according to the present invention.

The system comprises a charging control unit 1, a vehicle BMS simulator 2, a charger 3, a miniature circuit breaker 4, an address setting unit 5, an auxiliary power supply 6, a switch 7, a direct current contactor 8 and an output port 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the product of the present invention is usually placed when in use, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, 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 present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1, the utility model discloses a test platform who simulates a plurality of direct current charge terminals, include: the device comprises an auxiliary power supply 6, a test unit, a direct current contactor 8 and a charger 3; wherein, the dotted line block diagram is a schematic diagram of a group of single-gun charging terminals and a vehicle BMS simulator in a charging terminal test platform, and the test platform comprises 24 groups except the auxiliary power supply.

The test unit includes a charge control unit 1, a vehicle BMS simulator 2, a micro breaker 4, a switch 7, and an address setting unit 5; the charging control unit 1 is respectively connected with a charger 3, a vehicle BMS simulator 2, a miniature circuit breaker 4, an address setting unit 5, a switch 7 and an auxiliary power supply 6; the auxiliary power supply 6 is connected with the vehicle BMS simulator 2; the charger 3 is connected with a direct current contactor 8.

The vehicle BMS simulator 2 is used to set parameters related to a rated capacity of a battery, a demand for charging, an SOC value, a maximum allowable voltage of a vehicle, and a temperature of the battery, thereby testing related contents such as a communication protocol. The address setting unit 5 is implemented by a 5-bit dial switch, and is used to set the address of the charging control unit 1. And the charging control unit 1, the vehicle BMS simulator 2 and the charger 3 perform data interaction through a CAN bus. The miniature circuit breaker 4 is used for simulating the state of a gun inserted and pulled out of the charging terminal, and the switch 7 is used for simulating the fault of the charging terminal. The switch 7 can simulate faults such as sudden stop, door magnetism and the like; the charger 3 and the direct current contactor 8 transmit electric energy through a power line, and the direct current contactor 8 is externally connected with an output port 9. The dc contactor 8 controls the power loop. The state detection, the address recognition and the direct current contact control are all realized by the charging control unit 1. The output port 9 is a test port for connecting an oscilloscope and a power analyzer.

The test units are in 24 groups. And each group of test units are in hand-in-hand connection communication through a CAN communication line, namely the charging control unit 1 in each test unit is in communication through the CAN communication line. The auxiliary power supply 6 is used to supply power to the charging control unit 1.

When a test environment is set up, the test unit and the charger are correctly connected with the communication line and the power line, different numbers of charging terminals and the vehicle BMS simulator 2 are started according to test requirements, and the address of the charging control unit is correctly set.

The utility model discloses aim at protecting a plurality of direct current charging terminal's of simulation test platform, its core technical point is that test platform disposes 24 the vehicle BMS simulator 2 of the control unit that charges 1 and corresponding quantity to and supporting peripheral devices such as auxiliary power supply 6, miniature circuit breaker 4 and switch 7, be connected with machine 3 that charges through CAN bus and power line.

The test unit may simulate any number of single gun charge terminals within 24. Meanwhile, the test unit CAN be connected with the real charging terminal and the test unit through a CAN communication line by hand pulling, and the power line is connected with the charger 3. And a test platform with more charging terminals can be flexibly simulated and built.

The test unit can simulate a plurality of charging terminals with different numbers to carry out the tests of state conversion of the charging terminals, fault simulation, terminal charging and the like; a plurality of charging terminals CAN also cooperate and carry out tests such as CAN bus utilization ratio, communication stability.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test platform for simulating a plurality of direct current charging terminals is characterized by comprising: the device comprises an auxiliary power supply (6), a test unit, a direct current contactor (8) and a charger (3);

the testing unit comprises a charging control unit (1), a vehicle BMS simulator (2), a miniature circuit breaker (4), a switch (7) and an address setting unit (5);

the charging control unit (1) is respectively connected with a charger (3), a vehicle BMS simulator (2), a miniature circuit breaker (4), an address setting unit (5), a switch (7) and an auxiliary power supply (6); the auxiliary power supply (6) is connected with a vehicle BMS simulator (2); the charger (3) is connected with the direct current contactor (8).

2. The test platform for simulating multiple DC charging terminals according to claim 1, wherein the vehicle BMS simulator (2) is used to set battery rated capacity, charging requirement, SOC value, maximum allowable vehicle voltage and battery temperature related parameters, test communication protocol.

3. The test platform for simulating multiple direct current charging terminals according to claim 2, wherein the address setting unit (5) is implemented by a 5-bit dial switch, and is used for setting the address of the charging control unit (1).

4. The test platform simulating a plurality of DC charging terminals according to claim 1, wherein the charging control unit (1) performs data interaction with the vehicle BMS simulator (2) and the charger (3) through CAN bus.

5. The test platform for simulating a plurality of direct current charging terminals according to claim 4, wherein the miniature circuit breaker (4) is used for simulating a charging terminal plugging gun state, and the switch (7) is used for simulating a fault of the charging terminal.

6. The test platform of claim 5, wherein the number of test units is 24.

7. The test platform for simulating a plurality of direct current charging terminals according to claim 6, wherein the charger (3) and the direct current contactor (8) perform electric energy transmission through a power line, and the direct current contactor (8) is externally connected with an output port (9).

8. The test platform for simulating multiple direct current charging terminals according to claim 7, wherein the output port (9) is a test port for connecting an oscilloscope and a power analyzer.

9. The test platform of claim 8, wherein the test units communicate with each other via a CAN communication line via a hand-in-hand connection.

10. A test platform simulating a plurality of dc charging terminals according to claim 1, characterized in that the auxiliary power supply (6) is used to supply power to the charging control unit (1).