Direct current charging pile metering detection circuit, device and method

Abstract

The invention discloses a direct current charging pile metering detection circuit, device and method. The circuit comprises a power supply socket, a direct current zero-flux mutual inductor, a resistor, a switch unit, a charging socket, a battery pack, a resistor potential-divider network, a direct current electric energy acquisition circuit, an interface simulator, a switch control coil, a chip, a chip peripheral and a power module. The power supply socket is connected with the charging socket through the direct-current zero-flux mutual inductor and the switch unit, and the battery pack is connected with the charging socket; the direct-current zero-flux mutual inductor is connected with the chip and the chip peripheral through the resistor and the direct current electric energy acquisition circuit; the resistor potential-divider network is connected in parallel with the direct current zero-flux mutual inductor, and the resistor potential-divider network is connected with the direct current electric energy acquisition circuit; and the switch unit is connected with the chip and the chip peripheral through the switch control coil and the interface simulator. According to the invention, active electric energy error detection of charging and reverse charging of the charging pile can be realized, and a proper correction mode is adopted to prolong the service life of a battery.

Description

technical field [0001] The invention relates to the technical field of charging pile detection, in particular to a DC charging pile metering detection circuit, device and method thereof. Background technique [0002] The new energy electric vehicle industry is a leading industry under the new normal state of the national economy. The large-scale development of electric vehicles in the future needs the support of many public charging facilities. However, with the large number of non-vehicle DC charging piles entering the market, large Capacity DC chargers will also continue to emerge, so the detection of non-vehicle DC charging piles is becoming more and more important. [0003] However, mainstream companies such as the XL-942 off-vehicle charger field tester of Shenzhen Xinglong Technology Co., Ltd., and the TD1320 electric vehicle charger field tester of Changsha Tianheng Measurement and Control Technology Co., Ltd. generally use Resistive loads can only detect the positiv...

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Problems solved by technology

[0003] However, mainstream companies such as the XL-942 off-vehicle charger field tester of Shenzhen Xinglong Technology Co., Ltd., and the TD1320 electric vehicle charger field tester of Changsha Tianheng Measurement and Control Technology Co., Ltd. generally use Resistive loads can only detect the positive active energy error, and cannot detect the reverse active energy of the charging pile that is reverse charged

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