A system for testing low-voltage power supply of on-board chargers

Abstract

The invention discloses a system for testing low-voltage power supply of an on-board charger. The system for testing low-voltage power supply of the on-board charger comprises a low-voltage direct current source and a signal generator set, and also comprises a switching circuit; the switching circuit is connected with the low-voltage direct current source and an on-board charger to be tested; by changing the switching position of a switching contact in the switching circuit, the test mode of the on-board charger low-voltage power supply test can be changed; and switching between the forward power-on mode and the reverse power-on mode which are required by the on-board charger low-voltage power supply test is achieved. On this basis, regardless of whether the contact position of the switchis controlled manually or by a controller, the above method is more labour-saving and time-saving than a mode of manually changing connecting lines in the prior art, furthermore, compared with the mode of changing the connecting lines, the mode of changing the contact position of the switch is obviously less error-prone and causes smaller loss to the test system.

Description

Technical field [0001] The invention relates to the field of automotive electronics, and in particular to a system for testing low-voltage power supply of a vehicle-mounted charger. Background technique [0002] Under the dual pressure of energy and environment, as well as the promotion of policy orientation, the market share of electric vehicles is getting higher and higher, and it has gradually become an important travel tool for people. Compared with the refueling of ordinary fuel vehicles, electric vehicles need to be charged to provide energy. The power sector relies on the existing parking facilities to build a variety of charging stations. Electric vehicles can be charged through the charging piles provided by the charging stations. The charger is a device that connects the car battery and the charging pile. According to whether the charging system is installed in the car, it is divided into on-board chargers and off-board chargers. As an important part of electric vehic...

AI Technical Summary

Problems solved by technology

When testing the low-voltage port, several test modes are involved, such as forward and reverse energization of the low-voltage power supply port of the on-board charger. In the traditional process of testing the low-voltage power supply of the on-board charger, manual and frequent Changing the wiring method is time-consuming, labor-intensive, and error-prone, and it is easy to cause damage to circuit components due to carelessness when changing the wiring method (such as changing the wire terminal)

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