CN210803614U - Electric automobile interoperability test equipment - Google Patents
Electric automobile interoperability test equipment Download PDFInfo
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- CN210803614U CN210803614U CN201921358487.5U CN201921358487U CN210803614U CN 210803614 U CN210803614 U CN 210803614U CN 201921358487 U CN201921358487 U CN 201921358487U CN 210803614 U CN210803614 U CN 210803614U
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Abstract
The utility model discloses an electric automobile interoperability test equipment, include: the display system comprises a power module, a direct current interface module, an alternating current interface module, a control module and a display interaction module, wherein the direct current interface module comprises a direct current interface, a relay and a first controller; the alternating current interface module comprises an alternating current interface, an alternating current contactor and a second controller, a three-phase alternating current input interface outside the equipment is sequentially connected with the alternating current contactor and the alternating current interface, the second controller is connected with the alternating current contactor through an intermediate relay, the control module is connected with the direct current interface module and the alternating current interface module through communication interfaces, data signals of the direct current interface and the alternating current interface are collected and processed, and data are displayed through the display interaction module. The utility model discloses small, light in weight, integrated level are high, with low costs, can carry out a key direct current test or exchange the test to electric automobile, improve efficiency of software testing, use manpower sparingly.
Description
Technical Field
The utility model relates to an electric automobile tests the field, in particular to electric automobile interoperability test equipment.
Background
At present, as the new energy industry is a new industry, the existing electric automobile interoperability testing equipment on the market is few, even if the existing electric automobile interoperability testing equipment is composed of a control operation computer, an electric conditioning device and a signal acquisition instrument and meter, the total volume of the product is relatively large, the number of components is large, the price is high, the operation is complex, the vehicle type capable of being tested is single, and the applicable occasion is single.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the comprehensive test measuring equipment can realize the test of conductive charging interoperability (including alternating current and direct current charging interoperation test) of new and old national standards of electric vehicles and the test of communication protocol consistency between an off-board conductive charger of the electric vehicle and a battery management system.
The utility model adopts the technical scheme as follows: an electric vehicle interoperability testing apparatus, comprising: the device comprises a power supply module, a direct current interface module, an alternating current interface module, a control module, a three-phase alternating current input interface and a display interaction module;
a direct current interface module:
the system comprises a first controller, a direct current interface, a first communication interface, a relay, a voltage sensor and a current sensor; the power supply module is connected with the first controller and supplies power to the first controller, and the power supply module is connected with the direct current interface to form a direct current channel; the relay is arranged on the direct current channel, is connected with the first controller and is controlled to be switched on and off by the first controller; the control module is connected with the first controller and used for sending a control signal; the voltage sensor and the current sensor are arranged on the direct current channel, and the signal output ends of the voltage sensor and the current sensor are connected to the first communication interface; the first communication interface is connected with the direct current channel and used for acquiring data signals on the direct current channel; the first communication interface is connected to the control module and transmits data signals;
the AC interface module:
the system comprises a second controller, an alternating current interface, a relay, an alternating current sensor and a second communication interface; the three-phase alternating current input interface is sequentially connected with the alternating current contactor, the alternating current sensor and the three-phase power input end of the alternating current interface; the power supply simulator is connected with the second controller and supplies power to the second controller; the second controller is sequentially connected with the relay and the alternating current contactor; the second controller is connected with the control module, and the control module issues a control signal; the second communication interface is connected with the alternating current sensor, the alternating current interface CC end and the alternating current interface CP end; the second communication interface is connected to the control module and transmits data signals;
the power supply module is connected with the control module and provides working electricity; the control module is in signal connection with the power supply module and controls the work of the power supply module;
the display interaction module is connected with the control module, the control module collects and processes data signals in the direct current interface module and the alternating current interface module, and data are displayed through the display interaction module.
Further, the power module includes: the three-phase alternating current input interface is connected with the input end of the power supply contactor and is used for providing three-phase alternating current for the interior of equipment; the power input end of the charger is connected to the three phases at the output end of the power contactor, and the power output end of the charger is connected with the DC-DC + port of the DC interface to provide a power supply for charging the vehicle during the DC test; the U1 power supply input end is connected to one phase of the power supply contactor output end, and the U1 power supply output end is connected with the control module, the direct current interface module and the alternating current interface module to provide a 12V power supply; the auxiliary power supply input end is connected to one phase of the output end of the power supply contactor, the output end is connected with the direct current interface through the relay, a 12v power supply is provided, and the auxiliary power supply input end is connected to the automobile BMS through the branch interface to supply power for the BMS.
Furthermore, the control module comprises an ARM control board and an FPGA, the FPGA is connected to the ARM control board, and the ARM control board is provided with 2 RS422 interfaces and 2 CAN interfaces.
Furthermore, the control module is connected with a charger power supply and an auxiliary power supply through a CAN1 interface and is used for communicating with the charger power supply and the auxiliary power supply.
Further, the control module is respectively connected with the direct current interface module through an RS422 interface and a CAN2 interface, and is connected with the alternating current interface module through an RS422 interface; the RS422 interface is connected to a first communication interface and a first controller in the direct current module and is used for transmitting direct current data signals and control signals; the CAN2 interface is connected to a direct current interface in the direct current module and is communicated with the automobile BMS through the direct current interface; the RS422 interface is connected to the second communication interface and the second controller in the dc module, and is configured to transmit an ac data signal and a control signal.
Furthermore, the direct current interface module also comprises an insulation simulation part which consists of a first resistor, a second resistor and two relays;
one end of the first resistor is connected to a DC + channel in the direct current channel, and the other end of the first resistor is grounded through one of the relays;
one end of the second resistor is connected to a DC-channel in the direct current channel, and the other end of the second resistor is grounded through another relay;
the method is used for insulation simulation test.
Furthermore, the display interaction module adopts an industrial touch display screen.
Furthermore, the test equipment also comprises a direct current test port and an alternating current test port which are arranged outwards and used for testing the outside when the equipment fails, and the direct current test port is connected to the direct current interface module and provides direct current signals needing to be acquired outwards; the alternating current test port is connected to the alternating current interface module and provides alternating current signals needing to be collected to the outside.
Furthermore, the test equipment also comprises a network port connected with the RAM control board and used for communicating externally.
Further, the testing equipment is integrally integrated in the portable draw-bar box, and the volume is 820mmX532mmX316 mm.
Compared with the prior art, the utility model discloses there is following advantage:
1. the electric automobile interoperability test equipment is small in size, light in weight, high in integration level and low in cost, and the whole equipment is integrated in a portable draw-bar box, so that the physical space and the test cost are greatly saved.
2. The electric automobile interoperability test equipment integrates parts such as human-computer interaction, signal acquisition and signal processing into a portable device, can finish one-key type automatic test, and then produces a user report, can greatly improve the efficiency and reduce the labor cost.
3. The test equipment for the interoperability of the electric automobile integrates the vehicle type tests of new and old national standards of a plurality of manufacturers and models.
4. The electric automobile interoperability test equipment fully considers the use environment of each occasion during design, and can be applied to a plurality of different occasions, including electric automobile manufacturers, vehicle forced inspection mechanisms, 4S stores and field maintenance.
5. The electric automobile interoperability test equipment is designed according to industrial grade products, has high reliability, good environmental adaptability, lower price than the whole set of equipment in the market and higher market value.
Drawings
Fig. 1 is an appearance diagram of the testing apparatus of the present invention.
Fig. 2 is a schematic block diagram of hardware according to the present invention.
Fig. 3 is an electrical schematic diagram of the hardware of the present invention.
Fig. 4 is a schematic diagram of the control module of the testing device of the present invention.
Fig. 5 is the electrical schematic diagram of the dc interface module of the testing device of the present invention.
Fig. 6 is the electrical schematic diagram of the ac interface module of the testing device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, 2 and 3, an electric vehicle interoperability testing device includes a control module, a dc interface module, an ac interface module and a power supply module; the modules are integrated on a circuit board, the circuit board is integrally integrated in a portable draw bar box with a flip cover, the volume of the portable draw bar box is 820mmX532mmX316mm, and the front face of the test equipment box body is a control panel after being opened.
In particular, the amount of the solvent to be used,
as shown in fig. 4, the control module is composed of an ARM control board and an FPGA, the ARM control board is connected to the FPGA, and the FPGA is externally connected to the RS422 interface through the level conversion module to form a standby communication interface; the device also comprises a switch matrix connected with the FPGA, and the switch matrix is used for inputting alternating current/direct current/voltage signals, acquiring data and switching and connecting channels of a panel test port, wherein the switch matrix is externally provided with 4 paths of test ports connected to the equipment panel, and two 10 groups of input current/voltage are connected to the direct current interface module and the alternating current interface module; the ARM control panel is equipped with 2 ways CAN interface: the vehicle BMS power supply comprises a CAN1 interface for communicating with internal power supplies, a CAN2 interface for communicating with a vehicle BMS, a 2-channel RS422 interface for communicating with a direct current module and an alternating current module respectively, a VGA interface for connecting with a display screen, and an SD card for storing data.
Preferably, the ARM control board model adopts SOM 3354.
Preferably, the model of the FPGA is EP1CT 144.
The power supply module comprises a charger power supply, an auxiliary power supply and a U1 power supply, a three-phase alternating current input interface on a control panel of the test equipment is connected with an internal alternating current contactor to internally input alternating current, wherein the input end of the charger power supply is connected with three phases at the output end of the alternating current contactor, and direct current is output from the output end after conversion; the input end of the auxiliary power supply is connected to one phase of the output end of the alternating current contactor; the power input end of the U1 is connected with one phase of the output end of the AC contactor; the power output end of the U1 is connected with the control module, the direct current interface module and the alternating current interface module, and supplies working electricity of a 12V power supply to each module;
the control module is connected with a charger power supply and an auxiliary power supply through a CAN1 interface and is used for communicating with the charger power supply and the auxiliary power supply.
Preferably, the power supply of the charger adopts a 20Kw power supply, and the model adopts MC750K 20.
Preferably, the U1 power supply model is LRS-75-12.
Preferably, the auxiliary power supply is 12 V1.2KWRECV1.0.
As shown in fig. 5, the DC interface module comprises a DC interface, a first controller, a first communication interface, and a CAN interface, where the DC interface is a 250A DC charging gun interface, and the charger power supply provides an ac/DC power supply to connect to DC interface DC + and DC-terminals, and provides a power supply for charging the vehicle during the DC test; the U1 power supply is connected to the end of the DC interface CC1 through a resistor R1; the auxiliary power supply is connected to the A + and A-ends of the direct current interface, provides a 12v power supply and is used for supplying power to the automobile BMS; the end of the DC interface CC2 is connected to the end of the DC interface PE through a resistor R3, and the end of the PE is grounded. The U1 power output end is further connected with the first controller and provides 12V common working voltage for the first controller. The resistors R1 and R3 are adjustable resistors and are controlled by a first controller.
And a direct-current voltage sensor and a direct-current sensor are also arranged between the direct-current interface DC-, DC + and the charger power supply, and the signal output ends of the direct-current voltage sensor and the direct-current sensor are connected to the first communication interface.
Preferably, two high-power switches K1 and K2 are arranged between the direct current sensor and the output DC-end and the DC-end of the charger power supply, and the high-power switches are arranged on a control panel of the test equipment.
Each circuit connected with the direct current interface and the power module is provided with a relay, the on-off of the relay is controlled by a first controller, and the first controller is connected to the first communication interface;
the DC interface CC1 end, the CC2 end, the A-end, the S-end and the S + end are also connected to a first communication interface and used for transmitting port signals; the A-end and the A + end of the direct current interface are also connected to the CAN interface.
The first communication interface is connected to an RS422 interface of the control module and used for transmitting signals in the direct current interface module; the control module issues a control signal to the first controller, and the relay is controlled by the first controller to realize the setting of the test conditions.
The CAN interface is connected to a control module CAN2 interface, and the communication between the control module and the direct current BMS is realized by the interface.
In order to realize insulation simulation in the direct current test, the direct current interface module further comprises two resistors R5 and R6 and two relays, wherein the two relays are connected with the first controller, one end of R5 is connected to the direct current interface
The other end of the DC + end is grounded through one relay; one end of R6 is connected to DC-end of DC interface, and the other end is grounded through another relay.
The direct current interface is arranged on the control panel and is externally used for inserting a direct current charging gun wire.
As shown in fig. 6, the ac interface module is composed of a dc interface, a second controller, and a second communication interface; the three-phase interface of the output end of the alternating current contactor is connected to the three-phase power input end of the alternating current interface, so that test power consumption is provided for the alternating current electric automobile; the AC interface CC end is sequentially connected with a resistor RC, a relay and an AC interface PE end, the AC interface PE end is grounded, the resistor R4 is connected with the relay in parallel, and the relay is connected with a second controller; the end of the alternating current interface CP is connected to one end of an adjustable resistor, the other end of the adjustable resistor is connected to a 2-to-1 selection switch, and the selection switch is used for selecting and connecting one path of U1 power supply or the other path of PWM generator. The U1 power output end is further connected with the second controller and provides 12V common working voltage for the second controller.
The second controller is connected with the alternating current contactor through an intermediate relay to control the on-off of the alternating current contactor; the selection switch, the PWM generator and the adjustable resistor are all controlled by the controller. An alternating current sensor and an alternating voltage sensor are also arranged between the three-phase input end of the alternating current interface and the output end of the alternating current contactor, and the signal output ends of the alternating current sensor and the alternating voltage sensor are both connected to the second communication interface and used for transmitting voltage and current signals; the CC end and the CP end of the alternating current interface are also connected to the second communication interface.
The second communication interface is connected to the RS422 interface of the control module and transmits a sensor signal, a CP end signal and a CC end signal in the alternating current interface module; and the control module issues a control signal to the second controller, and the second controller realizes the realization of the test condition.
The alternating current interface is arranged on the control panel and is externally used for plugging an alternating current charging gun wire.
In order to ensure the safety of the test process, an emergency stop switch connected with the alternating current contactor is also arranged on the test panel, and emergency power-off treatment is carried out through the emergency stop switch.
Preferably, the controllers in the dc interface module and the ac interface module are both implemented by FPGA chips, where the FPGA chip in the dc interface module is EP1C3T144I7, and the FPGA chip in the ac interface module is EP1C6T 144.
Preferably, the alternating current sensor and the output end of the alternating current contactor are further provided with a switch K3, and the switch K3 is arranged on a control panel of the test equipment.
Preferably, the charging system further comprises a direct current program control switch connected with the direct current interface module, the direct current program control switch adopts an EV200, and the control module issues a control signal to control the direct current program control switch for simulating the charging process.
Preferably, the system also comprises an alternating current program control switch connected with the alternating current interface module, and the alternating current program control switch adopts
And the LC1D50Q7C is controlled by the control module by sending a control signal and is used for simulating the charging process.
In order to ensure that the test can still be normally carried out when the equipment fails, a direct current test port and an alternating current test port are also arranged on the control panel of the test equipment; the direct current test port is respectively connected with a direct current voltage sensor, a direct current interface CC1 end, a CC2 end, an A-end, an S-end and an S + end and is used for externally transmitting signals required to be acquired during direct current test; the alternating current test port is respectively connected with the alternating current sensor, the alternating voltage sensor, the alternating current interface CC end and the CP end and used for externally transmitting signals required to be acquired during alternating current test
And the control panel of the test equipment is also provided with four test ports connected with the ARM control board for troubleshooting of the equipment.
The test equipment control panel is also provided with a network port, and the network port is connected with the ARM control board and used for communication and data transmission between the test equipment and the outside.
The test equipment further comprises a display interaction module, and preferably, the display interaction module adopts an industrial touch display screen and is used for controlling the test process and displaying the test result.
The utility model discloses test equipment's software includes two parts: a direct current vehicle testing part and an alternating current vehicle testing part. The system software can meet the requirements of the user-defined test program when needed. A user does not need to program, information such as test items, test steps, resource allocation, qualified criteria and the like is edited in a graphical mode, after editing is finished, a test flow can be stored and put into a test program set, and then the equipment completes one-key type automatic test according to the defined flow.
When testing, 380V/50Hz three-phase alternating current is connected to a three-phase alternating current input interface of the testing equipment from the outside of the testing equipment to supply power for the inside; during direct current testing, a direct current charging gun line is externally plugged into the direct current interface, and the direct current charging gun is connected to the electric automobile to be tested; during AC test, the AC interface is externally plugged with an AC charging gun line, and the AC charging gun is connected to the electric automobile to be tested
The direct current test process of the test equipment comprises the following steps: when the direct current test is carried out, a tester configures the test on the touch display screen according to a test flow, the on-off of the relay is controlled according to a first controller configured with the direct current interface module to complete the simulation of test conditions, after the condition setting is completed, the control module completes the acquisition of direct current charging voltage, direct current charging current, auxiliary power supply voltage, CC1 voltage and CC2 voltage by receiving first communication interface data, and then data processing and storage are carried out to form a data report, and the data report is displayed on the touch display screen. The DC test condition is realized by controlling a 20KW power supply, an auxiliary power supply, a relay and an adjustable resistor.
The direct current test also comprises a direct current protocol test: and setting a test condition, simulating protocol communication with the tested vehicle in real time, acquiring data of a CAN port of the direct current interface module through the control module, processing and storing the data, and finally outputting a data report to be displayed on the touch display screen.
Test equipment communication test flow: when the alternating current test is carried out, a tester configures the touch display screen according to a test flow, the on-off of the relay is controlled according to the second controller configured with the alternating current interface module to complete the simulation of test conditions, after the condition setting is completed, the control module completes the acquisition of alternating current charging voltage, alternating current charging current, CC voltage and CP voltage by receiving second communication interface data, and then data processing and storage are carried out to form a data report which is displayed on the touch display screen. The AC test condition is realized by controlling the intermediate relay, other relays, the PWM generator and the adjustable resistor. The utility model has the advantages of it is following:
1. the electric automobile interoperability test equipment integrates all functions related to test, including signal control, signal conditioning, signal acquisition, signal analysis, power electricity and human-computer interaction functions, in place under the limited portable volume. Therefore, the test can be completed without adding any auxiliary equipment outside, and the equipment volume and the production cost are greatly reduced; the operation process and the external connection relation are simplified, the labor cost is reduced, and the reliability of the equipment is improved.
2. The electric automobile interoperability test equipment is designed with a one-key automatic test function, after a charging port of a charging automobile is plugged with a test gun line, all direct-current or alternating-current test items can be completed by clicking to start testing, and a test report is generated. Therefore, the testing process can be greatly simplified, manual intervention is not needed in the testing process, and the labor cost is further reduced.
3. The test equipment for the interoperability of the electric automobile is designed for the situation that the current new and old national standard automobile types coexist and the application degree of the national standard is different by each electric automobile manufacturer, and the test capability can cover 98% of the existing automobile in the market. Meanwhile, research work is carried out on a plurality of application occasions of the test equipment, and products which can meet the requirements of the plurality of application occasions, including electric automobile manufacturers, vehicle forced inspection mechanisms, 4S stores, field maintenance and the like, are designed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An electric vehicle interoperability testing apparatus, comprising: the device comprises a power supply module, a direct current interface module, an alternating current interface module, a control module, a three-phase alternating current input interface and a display interaction module;
a direct current interface module: the system comprises a first controller, a direct current interface, a first communication interface, a relay, a voltage sensor and a current sensor; the power supply module is connected with the first controller and is connected with the direct current interface to form a direct current channel; the relay is arranged on the direct current channel, is connected with the first controller and is controlled to be switched on and off by the first controller; the control module is connected with the first controller and used for sending a control signal;
the voltage sensor and the current sensor are arranged on the direct current channel, and the signal output ends of the voltage sensor and the current sensor are connected to the first communication interface;
the first communication interface is connected with the direct current channel; the first communication interface is connected to the control module;
the AC interface module: the system comprises a second controller, an alternating current interface, an intermediate relay, an alternating current contactor, an alternating current sensor and a second communication interface; the three-phase alternating current input interface is sequentially connected with the alternating current contactor, the alternating current sensor and the three-phase power input end of the alternating current interface;
the power supply module is connected with the second controller and supplies power to the second controller; the second controller is sequentially connected with the intermediate relay and the alternating current contactor; the second controller is connected with the control module, and the control module issues a control signal;
the second communication interface is connected with the alternating current sensor, the alternating current interface CC end and the alternating current interface CP end; the second communication interface is connected to the control module;
the power supply module is connected with the control module;
the display interaction module is connected with the control module.
2. The electric vehicle interoperability testing apparatus of claim 1, wherein the power module comprises: the three-phase alternating current input interface is connected with the input end of the power supply contactor and provides three-phase alternating current for the interior of the equipment;
the power supply input end of the charger is connected to the three phases at the output end of the power supply contactor, and the power supply output end of the charger is connected with the DC-DC + port of the DC interface;
the U1 power supply input end is connected to one phase of the power supply contactor output end, and the U1 power supply output end is connected with the control module, the direct current interface module and the alternating current interface module;
and the input end of the auxiliary power supply is connected to one phase of the output end of the power supply contactor, and the output end of the auxiliary power supply is connected with the direct current interface through the relay and is connected to the test automobile BMS through the direct current interface.
3. The electric vehicle interoperability testing device as claimed in claim 2, wherein the control module is an ARM control board, and the ARM control board is provided with 2 RS422 interfaces and 2 CAN interfaces.
4. The device for testing interoperability of electric vehicles according to claim 3, wherein the control module is connected to a charger power supply and an auxiliary power supply through a CAN1 interface.
5. The electric automobile interoperability testing device as claimed in claim 4, wherein the control module is connected to the DC interface module through an RS422 interface and a CAN2 interface, and is connected to the AC interface module through an RS422 interface; the RS422 interface is connected to a first communication interface in the direct current module and a first controller; the CAN2 interface is connected to a direct current interface in the direct current module; the RS422 interface is connected to the second communication interface of the dc module and the second controller.
6. The electric automobile interoperability testing device as claimed in claim 5, wherein the DC interface module further comprises an insulation simulation part, which is composed of a first resistor, a second resistor and two relays;
one end of the first resistor is connected to a DC + channel in the direct current channel, and the other end of the first resistor is grounded through one of the relays;
one end of the second resistor is connected to a DC-channel in the direct current channel, and the other end of the second resistor is grounded through another relay.
7. The electric automobile interoperability testing device as claimed in claim 6, wherein the display interaction module employs an industrial touch display screen.
8. The electric automobile interoperability test equipment according to claim 7, wherein a direct current test port and an alternating current test port are further arranged outwards, and the direct current test port is connected to the direct current interface module; the alternating current test port is connected to the alternating current interface module.
9. The electric vehicle interoperability testing device of claim 8, further comprising a port connected to the ARM control board.
10. The electric vehicle interoperability testing device of claim 9, wherein the testing device is integrated into a portable draw-bar box having a volume of 820mmX532mmX316 mm.
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| CN201921358487.5U CN210803614U (en) | 2019-08-21 | 2019-08-21 | Electric automobile interoperability test equipment |
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| CN201921358487.5U CN210803614U (en) | 2019-08-21 | 2019-08-21 | Electric automobile interoperability test equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067921A (en) * | 2020-08-10 | 2020-12-11 | 广州汽车集团股份有限公司 | Conduction charging test system and method for electric vehicle |
| CN113219279A (en) * | 2021-04-21 | 2021-08-06 | 成都艾默泰克科技有限公司 | New energy automobile alternating current charging test system and test method |
| CN113219280A (en) * | 2021-04-21 | 2021-08-06 | 成都艾默泰克科技有限公司 | New energy automobile charging interoperation consistency test system and test method |
| CN115129028A (en) * | 2022-06-27 | 2022-09-30 | 一汽奔腾轿车有限公司 | Automatic IOP test system |
-
2019
- 2019-08-21 CN CN201921358487.5U patent/CN210803614U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067921A (en) * | 2020-08-10 | 2020-12-11 | 广州汽车集团股份有限公司 | Conduction charging test system and method for electric vehicle |
| CN113219279A (en) * | 2021-04-21 | 2021-08-06 | 成都艾默泰克科技有限公司 | New energy automobile alternating current charging test system and test method |
| CN113219280A (en) * | 2021-04-21 | 2021-08-06 | 成都艾默泰克科技有限公司 | New energy automobile charging interoperation consistency test system and test method |
| CN115129028A (en) * | 2022-06-27 | 2022-09-30 | 一汽奔腾轿车有限公司 | Automatic IOP test system |
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