Collective and distributive type power batteries dynamic equilibria management system

A power battery pack and dynamic equalization technology, which is applied in radio transmission systems, primary battery use/maintenance, collectors, etc., can solve the problem that the battery SOC prediction technology is not perfect, it is difficult to estimate online in real time, and there is little research on equalization discharge, etc. problems, to achieve excellent adjustment control performance, high reliability, and achieve the effect of centralized monitoring

Inactive Publication Date: 2008-03-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Battery SOC prediction technology is not perfect at home and abroad, especially it is difficult to achieve online real-time estimation, and the general error is about 10%
For the realization of balanced charge and discharge, generally only balanced charge is considered in research work at home and abroad, and there is little research on balanced discharge

Method used

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  • Collective and distributive type power batteries dynamic equilibria management system
  • Collective and distributive type power batteries dynamic equilibria management system
  • Collective and distributive type power batteries dynamic equilibria management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] As shown in Figure 1, a dynamic balance management system for distributed power battery packs includes a battery monitoring subsystem 7, a battery balancing subsystem 1, a battery management subsystem 12, and a host computer 10; the battery monitoring subsystem 7 is mainly composed of multiple units Each single battery sampling module is connected to a single battery 5 of the battery pack 4 through a cable 15, and each single battery monitoring module is connected by a single bus communication single bus 9, and through a single bus 9 is connected with the battery management subsystem 12; the battery management subsystem 12 includes a battery management ECU with a microcontroller as the core, a multi-channel communication circuit 23 and a bus communication module and a channel gating control signal module. The integrated IC chip CPU of O module and SCI, SPI and CAN communication modules is the core, supplemented by peripheral circuits. The upper computer 10 is connected ...

Embodiment 2

[0037]Fig. 5 is a schematic diagram of grouped channel selection switches. As shown in the figure, the battery balancing module 2 is connected to the battery cells through a one-to-many channel switch 31 . In order to simplify the system structure and reduce costs, the channel selection switch can be managed in groups. That is, the m single cells 5 of the power battery pack are divided into n groups in arrangement, equipped with n battery balancing modules 3 , and each battery balancing module 3 is connected to n groups of batteries in one-to-one correspondence. The battery monitoring subsystem 7 and the battery management subsystem 12 are the same as those in the first embodiment. The advantage of this solution is that each battery balancing subsystem manages a fixed group of batteries, and the structure of the channel switch is simple, which is convenient for troubleshooting. The working principle of the rest is the same as that of Embodiment 1.

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PUM

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Abstract

The invention discloses a dynamic equilibrium management system of a collector-distributed motor battery, comprising a battery sub-observation system (7), a battery equilibrium system (1), a battery management subsystem (12) and a host computer (10). The battery sub-observation system (7) consists of a plurality of monolithic battery sampling molds. The battery management subsystem (12) comprises a battery management ECU with a microcolltroller as the core, a multi-channel communication line (23), a concentration line communication mold and a channel selectivity control mold. The battery equilibrium system (1) consists of a plurality of monolithic battery equilibrium molds (2) and a channel selectivity circuit (3). The dynamic equilibrium management system formed by the invention has compact topological layout and simple structure, which is easy to be transferred, maintained and developed. The invention realized the management method of centralization control and dynamic distributed equilibrium, which has good property of adjustment and control and high reliability.

Description

technical field [0001] The invention relates to a distributed balance management system for power battery packs. The system can be used in pure electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, electric ships or other fields equipped with power battery packs. Background technique [0002] At present, the power battery pack energy management systems developed at home and abroad are generally designed from the perspective of safety. Strictly speaking, the general battery management system only has the function of battery monitoring. This system can monitor the state parameters of the battery, and report various faults to the host computer through the bus communication technology. From a safety point of view, most common battery management systems use analog circuits to control the parameters of the battery's charge cut-off voltage, discharge cut-off voltage, and battery temperature to ensure that the battery is not damaged. In this way, it actually s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M6/50G01R31/36H02J7/00H04B7/00H04L12/28G06Q10/00
CPCY02E60/12Y02E60/10
Inventor 罗玉涛赵克刚
Owner SOUTH CHINA UNIV OF TECH
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