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Interface device for testing electric automobile direct-current charging pile

A technology for DC charging piles and electric vehicles, which is applied to measuring devices, casings of measuring devices, components of electrical measuring instruments, etc., can solve the problems of lack of automatic data collection and uploading functions, heavy workload, and danger.

Pending Publication Date: 2019-04-26
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD QUZHOU POWER SUPPLY CO +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. It is necessary to manually control the on-off of each circuit, and test the action state of the DC charging pile when a fault occurs, which is a heavy workload and cumbersome
[0005] 2. The equipment has a low degree of automation, does not have automatic control functions, and the wiring is cumbersome, so it is dangerous to test
[0006] 3. The level of equipment integration is low, and it does not have the function of automatic data collection and uploading, which requires manual collection and judgment

Method used

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  • Interface device for testing electric automobile direct-current charging pile
  • Interface device for testing electric automobile direct-current charging pile
  • Interface device for testing electric automobile direct-current charging pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] The embodiment of the present invention provides an interface device for testing DC charging piles of electric vehicles, such as figure 1 As shown, it is divided into 12 parts, interface device shell structure 1, charging pile output socket device 2, battery voltage simulation device 3, main control device 4, analog interface device output acquisition interface device 5, CAN1 communication interface 6, CAN2 communication Interface 7 , switch device 14 , variable resistance device 16 , switch device 16 , load positive terminal 17 , load negative terminal 18 .

[0092] like figure 2 As shown, the DC charging pile is connected to this device (DC charging pile test interface device) and then connected to the DC load (electric vehicle battery), and the normal charging test of the DC charging pile is realized through the control of the host computer and the simulated vehicle communication protocol software.

[0093] The workflow of the normal process test is that the tester...

Embodiment 2

[0095] Exception process testing includes the following:

[0096](1) In the self-inspection stage test, before the start of the insulation test, simulate the abnormal battery voltage at the outer terminal (the battery voltage at the outer terminal ≥ 10V). At the stage before the charging pile enters the insulation test, the host computer test system issues control commands to the main control device 4 to adjust the battery voltage ≥ 10V and close the switches K10 and K11, and the main control device 4 controls the output voltage of the battery voltage simulation device 3 ≥10V, and control the K10 and K11 switches to close, and test whether the charging pile can enter the insulation self-test stage. At this time, it should not be able to enter the insulation self-test stage.

[0097] (2) Communication interruption test. After the charging pile enters the normal charging process, the host computer test system sends a control command to the main control device 4 to disconnect th...

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Abstract

The invention provides an interface device for testing an electric automobile direct-current charging pile. The interface device comprises a battery voltage simulation device (3), a main control device (4), a charging control loop and a variable resistance device (15); by controlling the on-off states of a plurality of switch devices arranged on the charging control loop, the main control device (4) is used for simulating charging fault situations, receiving charging commands of an upper computer, adjusting the resistance value of the variable resistance device (15) and the output voltage value of the battery voltage simulation device (3) and simulating various charging conditions of the direct-current charging pile. According to the design scheme of the interface device, the on-off statesof guide signals can be controlled, the normal charging process and abnormal charging processes of the electric automobile direct-current charging pile are simulated, and the interface device has theadvantages of being high in automation degree, high in integration degree and high in testing speed.

Description

technical field [0001] The invention relates to the field of detection of DC charging piles, in particular to an interface device for testing DC charging piles of electric vehicles. Background technique [0002] Electric vehicles use electric energy as power, which has the advantages of cleanliness, high efficiency, and high conversion efficiency. With the continuous increase in the number of electric vehicles, in order to ensure the endurance and convenience of electric vehicles, a large number of supporting electric vehicle charging facilities have also been built. Electric vehicle charging facilities use high voltage and high current to charge electric vehicles. There are many safety hazards in the charging process. Once an accident occurs, it will cause damage to the vehicle and even threaten the safety of personnel. [0003] The connection between charging facilities and electric vehicles requires a dedicated connection device, which includes many lines such as power o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R1/04
CPCG01R1/0416G01R31/00
Inventor 李涛永黄宏和张杨丁霄寅蒋林洳刘岗张元星徐学钒唐攀攀徐建清黄炎阶李晓强
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD QUZHOU POWER SUPPLY CO
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