Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A vehicle power battery equalization method, device and vehicle

A technology of power battery and equalization method, which is applied in the direction of battery circuit devices, battery/fuel cell control devices, electric vehicles, etc., can solve the problems of low equalization efficiency and inapplicability, so as to improve the equalization effect, increase the usable capacity, The effect of good vehicle dynamic index

Active Publication Date: 2021-05-14
GAC AION NEW ENERGY AUTOMOBILE CO LTD
View PDF34 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a vehicle-mounted power battery equalization method, device and automobile to overcome the problem that the vehicle charging equalization scheme is not suitable for hybrid electric vehicles, and the charging time of the vehicle is limited so that the equalization efficiency is not high defect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A vehicle power battery equalization method, device and vehicle
  • A vehicle power battery equalization method, device and vehicle
  • A vehicle power battery equalization method, device and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054]The following descriptions of various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented.

[0055] Such as figure 1 Shown is a flow chart of a vehicle power battery equalization method provided by the embodiment of the first aspect of the present invention, and the method includes the following steps:

[0056] S100 determines to start battery equalization according to the sleep time of the car and the battery charge and discharge current value;

[0057] S200 Determine the battery cell with the lowest voltage, and obtain information about the voltage difference between other battery cells and the battery cell with the lowest voltage;

[0058] S300 Determine the balance information of the battery cells in each battery module according to the pressure difference information;

[0059] The S400 performs battery balancing based on the balancing information of battery cells.

[0060] Specificall...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a vehicle-mounted power battery equalization method, device, and automobile. The method first determines the start-up battery equalization according to the sleep time of the automobile and the battery charge and discharge current value; then determines the battery cell with the lowest voltage, and obtains other battery cells and The voltage difference information of the battery cell with the lowest voltage; and the balance information of the battery cells in each battery module is determined according to the pressure difference information; finally, the battery balance is performed according to the balance information of the battery cells. Furthermore, the device is used to carry out the method, the motor vehicle comprising the device. The method, device and automobile of the invention solve the technical problem that the charging equalization scheme of the whole vehicle is not applicable to HEV, and improve the working efficiency of battery equalization.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method and device for equalizing a vehicle-mounted power battery and an automobile. Background technique [0002] The vehicle power battery includes several battery modules, and each battery module is composed of battery cells connected in series and parallel. Due to the consistency of the battery cells in terms of use, temperature, and impedance, the voltage will vary in actual use. The emergence of this inconsistency shortens the life of the vehicle's power battery, and the balancing function of the battery management system (Battery Management System, BMS) is to eliminate the voltage difference between the battery cells. Then, the existing technology is to choose the charging equalization scheme of the whole vehicle, that is, when the battery management system enters the battery charging mode, the opening and closing of the discharging circuit is changed according to the r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/22H02J7/00
CPCY02T10/70
Inventor 曾勇闵文骏王仁蓝郭思超
Owner GAC AION NEW ENERGY AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products