Vehicle charging circuit and method, vehicle, device and storage medium

Abstract

The embodiment of the invention provides a vehicle charging circuit and method, a vehicle, a device and a storage medium, and relates to the field of electric vehicles. The vehicle charging method is applied to a controller included in the vehicle charging circuit. The vehicle charging method comprises the steps of when a charging pile power supply charges a battery pack circuit, acquiring a charging voltage parameter of the charging pile power supply and a working voltage parameter of the battery pack circuit; and controlling the working states of a first relay, a second relay and a third relay according to the charging voltage parameter of the charging pile power supply and the working voltage parameter of the battery pack circuit, so that a first battery pack and a second battery pack are connected in parallel or in series. According to the method, the working state of the relays can be controlled according to the parameters of the charging pile power supply and the battery pack circuit, so that series connection or parallel connection of the battery pack at the vehicle end can be controlled, the voltage of the battery pack circuit is controlled, and the vehicle can adapt to various charging piles.

Description

technical field [0001] The embodiments of the present application relate to the field of electric vehicles, and more specifically, relate to a vehicle charging circuit, method, vehicle, device and storage medium. Background technique [0002] With the technological development of new energy electric vehicles becoming more and more mature, the number of new energy electric vehicles on the market continues to increase. From the initial low-voltage platform to the high-voltage platform of over 800 volts, new energy electric vehicles have experienced years of development. Due to factors such as the inconsistency of the technical routes of different vehicles and unclear directions, there are problems with the compatibility of charging piles on the market. [0003] At present, high-power DC charging piles have been built on the market. For passenger cars, charging piles with a voltage platform of 200-500 volts are used, and for large commercial vehicles, charging piles with a vol...

AI Technical Summary

Problems solved by technology

However, as the technology in the field of electric vehicles continues to mature, in order to improve the conversion efficiency of energy, the voltage platform level of passenger vehicles is constantly improving to solve the problem of low conversion efficiency

[0004] However, as the voltage platform level of passenger cars increases, the voltage of charging piles installed on the market cannot meet the charging requirements of passenger cars on high-voltage platforms

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