A low-voltage battery charging method and system, controller, and vehicle

A low-voltage battery and motor controller technology, applied in the automotive field, can solve the problems of power consumption, high-voltage safety scene analysis, and static power consumption of low-voltage batteries, etc.

Active Publication Date: 2019-10-18
BEIJING ELECTRIC VEHICLE
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention provides a low-voltage battery supplementary power method, system, controller, and automobile, the purpose of which is to solve the battery management system in the prior art, without considering the power consumption caused by the static power consumption of the low-voltage battery when the automobile is locked for a long time Issues that consume and do not make a specific analysis of high-voltage safety scenarios

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  • A low-voltage battery charging method and system, controller, and vehicle
  • A low-voltage battery charging method and system, controller, and vehicle
  • A low-voltage battery charging method and system, controller, and vehicle

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Embodiment Construction

[0086] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0087] See figure 1 The embodiment of the present invention provides a low-voltage battery charging method, which is applied to a low-voltage battery charging system, the low-voltage battery charging system is connected to the gateway of an automobile through a body bus, and the method includes:

[0088] Step 101: When the car is stationary and the door is locked, periodically activate the low-voltage battery charging system according to a preset cycle, s...

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Abstract

The invention provides a low-voltage battery recharging method and system, a controller and a vehicle. The method is applied to the low-voltage battery recharging system connected to a gateway of the vehicle through a vehicle body bus. The method comprises the steps that under the condition that the vehicle is stationary and vehicle doors are locked, the low-voltage battery recharging system is periodically started according to a preset cycle, so that the low-voltage battery recharging system detects whether the low-voltage battery of the vehicle is in a to-be-recharged state, and the low-voltage battery is used for supplying power for electrical appliances of the vehicle; when the low-voltage battery is in the to-be-recharged state, a recharging request is sent to a vehicle controller of the vehicle; and after receiving the feedback of the recharging request from the vehicle controller, the vehicle controller controls a power battery high-voltage relay of the vehicle to be closed, so that a power battery of the vehicle performs recharging on the low-voltage battery.

Description

Technical field [0001] The present invention relates to the technical field of automobiles, in particular to a low-voltage battery charging method and system, a controller, and automobiles. Background technique [0002] With the rapid development of automobile technology, new energy vehicles, mainly electric vehicles, have gradually opened up the market and entered people's lives. An electric vehicle includes a power battery that provides a power source and a low-voltage battery used to power the entire vehicle's electrical appliances. When the low-voltage battery is exhausted, the entire vehicle's electrical appliances will not be used. In the prior art, there are some battery management systems for controlling the power battery of an electric vehicle to charge the low-voltage battery. However, the battery management system in the prior art usually charges the low-voltage battery when the car is running, and does not consider the power consumption caused by the static power con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/023B60R16/033B60L3/00
Inventor 万艳宽
Owner BEIJING ELECTRIC VEHICLE
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