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Charging method and system for low-voltage storage battery of new energy automobile

A technology for low-voltage batteries and new energy vehicles, which is applied in electric vehicle charging technology, battery/fuel cell control devices, charging stations, etc., and can solve problems affecting users' normal use and low-voltage battery power loss, etc.

Pending Publication Date: 2021-06-08
IAT AUTOMOBILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a charging method and system for a low-voltage battery of a new energy vehicle to solve the technical problem in the prior art that the low-voltage battery of the new energy vehicle will lose power when the vehicle is parked for a long time, thereby affecting the normal use of the user.

Method used

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  • Charging method and system for low-voltage storage battery of new energy automobile
  • Charging method and system for low-voltage storage battery of new energy automobile
  • Charging method and system for low-voltage storage battery of new energy automobile

Examples

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Embodiment 1

[0027] This application provides a charging method for low-voltage batteries of new energy vehicles, which can be applied to new energy vehicles, such as figure 1 As shown, the method may include:

[0028] Step S11, receiving a first wake-up command sent by a battery sensor, wherein the battery sensor determines the remaining power of the low-voltage battery of the new energy vehicle and generates the first wake-up command according to the remaining power.

[0029] Specifically, in this solution, the above-mentioned battery sensor can be a low-voltage battery sensor of a new energy vehicle, and the vehicle controller (VCU, Vehicle Control Unit) of the new energy vehicle can receive the low-voltage battery sensor (LBS, Low voltage Battery Sensor) sends the first wake-up command, the low-voltage battery sensor can determine the remaining power of the low-voltage battery, and when the remaining power is less than the preset value, the low-voltage battery sensor sends the first wa...

Embodiment 2

[0077] This application provides a charging method for low-voltage batteries of new energy vehicles, which can be applied to new energy vehicles, such as Figure 4 As shown, the method may include:

[0078] Step S41, collecting battery status information of the low-voltage battery of the new energy vehicle.

[0079] Specifically, in this solution, information such as voltage, current and temperature of the low-voltage battery can be collected by a low-voltage battery sensor (LBS). For example, when the vehicle is in the IG-OFF state, after all the controllers except the LBS are dormant, the low-voltage battery sensor (LBS) will collect the voltage, current, temperature and other information of the low-voltage battery every 30 minutes (min).

[0080] Step S42, determining the remaining power of the low-voltage battery of the new energy vehicle according to the status information of the low-voltage battery of the new energy vehicle.

[0081]Specifically, in this solution, the ...

Embodiment 3

[0117] This application provides a charging system for low-voltage batteries of new energy vehicles, such as Figure 5 As shown, the system is applied to new energy vehicles, the system includes:

[0118] New energy vehicle low-voltage battery 50.

[0119] The battery sensor 52 is used to determine the remaining power of the low-voltage battery of the new energy vehicle.

[0120] The vehicle controller 54 is configured to receive the remaining power sent by the battery sensor, wherein the vehicle controller is also used to control the charging of the low-voltage battery of the new energy vehicle according to the remaining power.

[0121]Specifically, in this solution, the low-voltage battery sensor (LBS) calculates the remaining battery state of charge (SOC) of the low-voltage battery according to the collected information such as voltage, current and temperature of the low-voltage battery. For example, when the vehicle is in the IG-OFF state, the low-voltage battery sensor ...

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Abstract

The invention provides a charging method and system for a low-voltage storage battery of a new energy automobile. The method comprises steps of receiving a first wake-up instruction sent by a battery sensor, and enabling the battery sensor to determine the remaining power of the low-voltage storage battery of the new energy automobile and to generate the first wake-up instruction according to the remaining power; converting from a dormant state to a working state according to the first wake-up instruction; in the working state, a low-voltage storage battery of the new energy automobile being controlled to be charged; The method is advantaged in that a technical problem that in the prior art, the low-voltage storage battery of the new energy automobile is lack of electricity when the automobile is parked for a long time, and normal use of a user is affected is solved.

Description

technical field [0001] The invention relates to the field of battery charging for new energy vehicles, in particular to a charging method and system for low-voltage batteries of new energy vehicles. Background technique [0002] With the development of automobile technology, low-voltage batteries are widely used in vehicles because of their characteristics of being able to be recharged repeatedly. For example, traditional vehicles use low-voltage batteries to start the engine. For example, new energy vehicles use low-voltage batteries of new energy vehicles to start vehicles. Or the power supply of functions such as vehicle monitoring. When the vehicle is in the power-off / ignition-off state (IG-OFF), the low-voltage battery of the new energy vehicle will still be in the state of discharge. On the one hand, some modules of the car (such as the car anti-theft module) need power supply when the vehicle is parked. On the other hand, The low-voltage battery of new energy vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/12B60L53/00
CPCB60L58/12B60L53/00B60L2240/54Y02T10/70Y02T10/7072Y02T90/14
Inventor 王守军王柯杨成
Owner IAT AUTOMOBILE TECH
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