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A method and system for automatic testing of electric vehicle charging facilities

An automatic test system and charging facility technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as low efficiency, incomplete functions, and uneven performance parameters of charging facilities, achieving high integration and small size , easy maintenance and calibration effect

Active Publication Date: 2016-08-31
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uneven performance parameters of existing charging facilities, and the traditional test system is manual, which has the characteristics of incomplete functions and low efficiency. Therefore, a test system with full functions and high accuracy is needed to develop, test and maintain charging facilities. Provide a full set of test data

Method used

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  • A method and system for automatic testing of electric vehicle charging facilities
  • A method and system for automatic testing of electric vehicle charging facilities
  • A method and system for automatic testing of electric vehicle charging facilities

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 1 It is a block diagram of the overall structure of the automatic test system for electric vehicle charging facilities of the present invention.

[0058] The input terminal of the test system: adopts programmable AC power supply, mainly to provide standard AC power supply, which can change the output of different voltages and frequencies, and program the output of abnormal conditions of the power grid, including phase difference, voltage difference, harmonic influence, voltage Various factors such as sudden rise and sudden drop, assess the adaptability of AC charging piles and off-board chargers to unstable power grids and the stable output capability of signals, and also measure the parameters of the AC power supply at the input end, including voltage, current, and power Wait. In addition, the input end can be equipped with an anti-islanding test detection device for detection of photovoltaic grid-connected inverters.

[0059] The output part of the test syste...

Embodiment 2

[0063] figure 2 Schematic diagram of the system tested for the AC charging pile.

[0064] 1. Connect the AC charging pile to be tested to the testing platform;

[0065] 2. Set the programmable AC power supply and AC electronic load parameters according to the test items, respectively for the AC input characteristics of the AC charging pile (harmonic current, surge current, input power, power factor and efficiency, voltage interruption, voltage fluctuation, voltage sudden Rise / sag, frequency change, etc.), control pilot signal (output voltage, PWM frequency, rise / fall time, etc.), protection function characteristics (including on-load switching circuit, short circuit protection, overcurrent protection, etc.), insulation resistance and leakage current test;

[0066] 3. The centralized control system collects the relevant data tested by the equipment by communicating with the programmable AC power supply, AC electronic load, power analyzer and oscilloscope;

[0067] 4. Analyz...

Embodiment 3

[0070] image 3 Schematic of the system tested for the off-board charger.

[0071] 1. Connect the non-vehicle charger to be tested to the testing platform;

[0072] 2. Set the parameters of programmable AC power supply and high-power DC electronic load according to the test items, respectively for AC input characteristics (inrush current, input power, power factor and efficiency, etc.), DC output characteristics (output voltage error, voltage regulation accuracy, Output current error, steady current accuracy, ripple coefficient, current sharing unbalance, etc.), communication protocol (charger and BMS communication, CAN Bus read / write), protection function characteristics (soft start, abnormal connection status, power-off restart , input overvoltage / undervoltage protection, anti-output short-circuit function, anti-battery reverse connection function, current limiting / voltage limiting function), insulation resistance and leakage current, etc.;

[0073] 3. The centralized cont...

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Abstract

The inveniton relates to a method and system of automatic testing of electric automobile charging facilities. The testing method comprises the following steps that a device to be tested is connected to a detection platform; the device to be tested is detected according to a testing project; data detected by the detection platform are collected; collected data are analyzed; an analyzing result is output. Compared with the prior art, the method of automatic testing of the electric automobile charging facilities can conduct comprehensive testing on functional characteristics and performance indexes of an alternating current charging pile, a non-vehicle-mounted charger , a charger module and the like. Intelligentized centralized control is adopted, combination and batch execution of multiple testing projects can be achieved, a whole testing process can be executed by a centralized control platform automatically, and after testing is finished, a test report is generated automatically. A testing device can be used independently, and can be integrated to achieve systematic testing, and post-maintenance and post-calibration can be conducted conveniently. The method and the system of automatic testing of the electric automobile charging facilities can construct a fixed testing platform or a vehicle-mounted mobile testing platform.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an automatic testing method and system for charging facilities of electric vehicles. Background technique [0002] A new generation of energy-saving and environment-friendly vehicles represented by electric vehicles is an inevitable trend in the development of the automobile industry. Charging facilities provide energy supply for the operation of electric vehicles and are an important basis for the support system of electric vehicles. [0003] At present, there are mainly two power supply methods of AC charging and DC charging, and AC charging piles and off-board chargers are the carriers for realizing the two charging methods. The AC charging pile provides power for the on-board charger to charge the power battery, and the charging power is generally small; the off-board charger uses a converter to convert AC power into DC power, and then charges the power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 李武峰潘仰光李翔胡春雨崔宇
Owner STATE GRID CORP OF CHINA
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