Two-way distributed power battery equalization management system and method

A power battery and balance management technology, which is applied in the field of management systems, can solve the problems of power battery SOC estimation accuracy decline, the difficulty of realizing the actual engineering of the balance circuit, and the unfavorable improvement of battery consistency, etc., to achieve safety and battery life guarantee, balance The effect of short time and large equalization current

Active Publication Date: 2018-08-17
KAIFENG UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For pure electric vehicles that use multi-module power batteries as the main power source, the inconsistency between battery modules will lead to problems such as a decrease in the estimation accuracy of the power battery SOC (State of Charge) and a decrease in mileage; discharge strategy to protect the power battery, but in complex urban road conditions, the car has to start and stop continuously, and it is not enough to rely solely on the charge and discharge strategy to protect the power battery; therefore, the effect of solving the battery inconsistency problem through the battery e

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
  • Two-way distributed power battery equalization management system and method
  • Two-way distributed power battery equalization management system and method
  • Two-way distributed power battery equalization management system and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1: Such as figure 1 As shown, a two-way distributed power battery balance management system includes a battery pack 1, a control module 3, a balance module 2, a data acquisition module 5, and a host computer 6;

[0035] The control module 3 includes a microprocessor 302 and an insulation detection unit 301, the microprocessor 302 and the insulation detection unit 301 are electrically connected, and the control module 3 is arranged on a main control board;

[0036] The equalization module 2 includes an active equalization circuit 201; the battery pack 1 is electrically connected to the active equalization circuit 201 and the insulation detection unit 301, respectively; the active equalization circuit 201 is connected to the microprocessor 302;

[0037] One end of the data acquisition module 5 is connected to the active equalization circuit 201, and the other end is connected to the microprocessor 302 and the host computer 6.

[0038] The system also includes a protection ...

Example Embodiment

[0044] Embodiment 2: A two-way distributed power battery balance management method based on a two-way distributed power battery balance management system, including the following steps:

[0045] Step S201: the microprocessor 302 sets the safety threshold Vs of the voltage difference between the single power batteries;

[0046] Step S202: The insulation detection unit 301 detects whether the bus bar or the connecting branch of the battery pack 1 is leaking, and transmits the leakage information to the microprocessor 302 on the main control board;

[0047] Step S203: The data collection module 5 collects the charging and discharging current and voltage information of the single power battery, and sends the collected voltage information to the microprocessor 302;

[0048] Step S204: The microprocessor 302 processes the received information to determine whether the voltage difference between any two single power batteries exceeds the safety threshold and whether the battery pack 1 has leak...

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 discloses a two-way distributed power battery equalization management system which comprises a battery pack, a control module, an equalization module, a data acquisition module and an upper computer. The control module comprises a microprocessor and an insulation monitoring unit which are electrically connected, and the equalization module comprises an active equalization circuit. The invention further provides a two-way distributed power battery equalization management method. The method includes the steps that the microprocessor sets a safety threshold value Vs of the voltage difference between single power batteries; the insulation monitoring unit detects whether a bus or a connecting branch of the battery pack leaks electricity or not; the data acquisition module acquirescharging and discharging current and voltage information of the single power batteries; and the microprocessor judges whether the voltage difference of any two single power batteries exceeds the safety threshold value or not and whether the battery pack leaks electricity or not. Equalization management of the multiple single power batteries is achieved, and the equalization management system is small in equalization error and high in equalization efficiency.

Description

technical field [0001] The invention relates to the technical field of management systems, in particular to a two-way distributed power battery balancing management system and method. Background technique [0002] The multi-module power battery composed of series-parallel connection is an important source of power for pure electric vehicles and plug-in hybrid electric vehicles; in order to improve the actual available capacity and repeated use times of the energy system of electric vehicles, it is necessary to ensure the composition of power battery packs; Consistency of body energy. For pure electric vehicles that use multi-module power batteries as the main power source, the inconsistency between battery modules will lead to problems such as a decrease in the estimation accuracy of the power battery SOC (State of Charge) and a decrease in mileage; discharge strategy to protect the power battery, but in complex urban road conditions, the car has to start and stop continuou...

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
IPC IPC(8): B60L11/18B60L3/00
CPCB60L3/0046B60L58/10B60L58/22Y02T10/70Y02T10/7072Y02T90/14
Inventor 边疆李莉曹红英王娟朱朝旭
Owner KAIFENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap