Detection artificial load for movable electric vehicle charger

A technology for electric vehicles and simulated loads, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of being unable to meet the requirements of on-site mobile testing, bulky, etc., to facilitate mobile on-site testing and simplify the test process , the effect of reducing the number of switches

Inactive Publication Date: 2016-06-15
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

However, it is bulky and cannot meet the requirements of on-site mobile testing, and the on-site testing device for electric vehicle charging equipment needs to be developed urgently

Method used

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  • Detection artificial load for movable electric vehicle charger
  • Detection artificial load for movable electric vehicle charger

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0009] figure 1 Schematic diagram of simulated load wiring for mobile testing equipment for electric vehicle chargers, combined below figure 1 The present invention is introduced in detail.

[0010] This simulated load is tested for the charger module. Electric vehicle charger safety performance test and output characteristic test include output current error test, output voltage error test, steady current accuracy test, voltage steady accuracy test, ripple coefficient test, voltage limiting function test and current limiting function test. Varistor test. The variable resistance test requires the output voltage of the charger to vary within the range of 50% to 100%, and the output current to vary within the range of 20% to 100%. In order to facilitate the on-site mobile detection of the charger and reduce the size of the equipment, it is proposed to take the two ends of the output voltage and current plus the three values ​​in the middle for detection. There are 9 working ...

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Abstract

The invention relates to a movable electric vehicle charger to detect a simulated load, which is used for tests that require variable resistance in the safety performance test and output characteristic test of the electric vehicle charger. The simulated load is 500% R N , 375%R N , 250%R N , 200%R N , 150%R N , 100% R N , 75%R N and 50% R N Eight resistance value resistors are connected in parallel, among which, R N =U N /I N , is the rated voltage U output by the charger N and rated current I N By turning on or off the corresponding switch, the output terminal of the charger is connected to detect the required resistance value. The simulated load of the present invention can not only meet the requirements of the resistance value required by the detection test, but also has the characteristics of a movable type with a small volume.

Description

technical field [0001] The invention relates to the technical field of performance detection of electric vehicle chargers, in particular to a movable analog load for on-site inspection of a charger. Background technique [0002] The electric vehicle industry is one of the country's current strategic industries. With the popularity of electric vehicles, the large-scale application of charging and swapping facilities is imperative. However, the fixed test stations that have been put into operation cannot solve the problems caused by the large-scale application of electric vehicle infrastructure. Therefore, methods that can be inspected and inspected on site are needed to solve the practical problems of operation and maintenance of electric vehicle charging and swapping equipment. [0003] The constant current step resistance cabinet equipped with the existing fixed test station has a large capacity and can meet various resistance requirements. However, its bulky size cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 车延博杨月新
Owner TIANJIN UNIV
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