Low-voltage battery recharging method and system, controller and automobile

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: 2017-12-12
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
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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

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  • Low-voltage battery recharging method and system, controller and automobile
  • Low-voltage battery recharging method and system, controller and automobile
  • Low-voltage battery recharging method and system, controller and automobile

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Embodiment Construction

[0086] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

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

[0088] Step 101, when the car is stationary and the doors are locked, periodically start the low-voltage battery power supply system according...

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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 invention relates to the technical field of automobiles, in particular to a low-voltage battery charging method and system, a controller, and an automobile. 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. Electric vehicles include a power battery that provides a power source and a low-voltage battery that is used to power the electrical appliances of the vehicle. When the low-voltage battery is exhausted, the electrical appliances of the vehicle will not be able to be used. In the prior art, there are some battery management systems, which are used to control the power battery of the 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 ...

Claims

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Application Information

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IPC IPC(8): B60R16/023B60R16/033B60L3/00
Inventor 万艳宽
Owner BEIJING ELECTRIC VEHICLE
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