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Power test load of direct-current charger

A test load, DC charging technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of being unable to evaluate the ripple coefficient of the charger, unable to provide active load power supply, etc., and achieve the effect of meeting a wide voltage range

Active Publication Date: 2018-04-20
国网浙江省电力公司电动汽车服务分公司 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a test load for a DC charger, the active method has the following problems: 1. The installed charger cannot provide corresponding active load power on site
2. The active load has an impact on the output ripple coefficient of the charger, so it is impossible to evaluate the ripple coefficient of the charger

Method used

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  • Power test load of direct-current charger

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0016] A kind of DC charger power test load of the present invention, as figure 1 As shown, it includes 10A voltage adjustable load module 1 (10A means that the module will always work at a current of 10A and below, and the resistance value connected in series is controlled by the control board to ensure that it will always work within 10A at 200V~950V), 5A voltage can be Adjustable load module 2, 1A voltage adjustable load module 3, 0.5A voltage adjustable load module 4 and 0.1A voltage adjustable load module 5, the 10A voltage adjustable load module 1 includes the first single-chip microcomputer 1.1, relay K1~relay K8, and resistors R1 to R6 connected in series in sequence, the 5A voltage adjustable load module 2 includes a second single chip microcomputer 2.1, relays Q1 to Q8, and resistors R01 to R06 connected in series in sequence, the 1A v...

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Abstract

The invention relates to a power test load of a direct-current charger. The power test load comprises a 10-A voltage adjustable load module, a 5-A voltage adjustable load module, a 1-A voltage adjustable load module, a 0.5-A voltage adjustable load module and a 0.1-A Voltage adjustable load module. On the basis of the modular design, the heat dissipation mode is optimized; defects of tedious resistance process and high workload of the common resistor box are overcome; and accurate, efficient, and convenient effects are realized.

Description

technical field [0001] The invention relates to the technical field of program-controlled test loads, in particular to a DC charger power test load. Background technique [0002] At present, most of the program-controlled test loads adopt the active method, which is discharged through power electronics, and the energy absorbed by the load can be fed back to the power grid, which is mainly used for aging tests of power equipment. However, as a test load of a DC charger, the active method has the following problems: 1. The installed charger cannot provide a corresponding active load power supply on site. 2. The active load has an impact on the output ripple coefficient of the charger, and the ripple coefficient of the charger cannot be evaluated. Contents of the invention [0003] The purpose of the present invention is to solve the problems existing in the prior art, and propose a DC charger power test load, the load adopts the method of resistance array, realizes the cont...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 陈枫俞哲人李梁刘志凯吴芳芳王蔚宋天斌周际梁轶峰闫培渊汤国龙戴迎宏陈威胡华峰徐驰彭一鸣何应齐董旺
Owner 国网浙江省电力公司电动汽车服务分公司
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