Power battery pack maintenance device and working method thereof

A technology for power battery packs and maintenance devices, applied in secondary battery repair/maintenance, secondary batteries, secondary battery charging/discharging, etc., can solve the problem that there is no better method for estimating the accuracy of the remaining power of the battery pack, and the use of the battery pack Inaccurate life estimation, affecting marketing and other issues, to achieve the effect of solving the problem of balanced control, reducing cost and complexity, and improving safety

Inactive Publication Date: 2014-03-19
SHANGHAI AEROSPACE POWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has a large error in estimating the remaining power of the battery pack, especially in the later stage of the cycle. The life of the battery pack, the equilibrium state of the battery pack, and the temperature all have a great impact on the accuracy of the power estimation. There is currently no better method for the estimation accuracy of the remaining power
However, there is currently no accurate method for estimating the service life of a battery pack.
Therefore, there is no good way to solve these problems in the battery pack management system, which affects market promotion

Method used

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  • Power battery pack maintenance device and working method thereof
  • Power battery pack maintenance device and working method thereof

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Embodiment Construction

[0028] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. These examples should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

[0029] The power battery pack maintenance device provided in the following embodiments of the present invention can be used in 4S shops or other fixed-point maintenance places to realize performance maintenance of large power battery packs. The following embodiments of the present invention take the maintenance of a power battery pack for a car as an example. The car uses 108 50Ah battery packs connected in series, which is a lithiu...

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Abstract

The invention discloses a power battery pack maintenance device, which consists of a multi-core connector, a switch array, an isolating power supply module, a communication module, a control system, a charging module, a discharging module, a voltage detection circuit, a man-machine interaction module and a current sensor which are connected together. The invention additionally discloses a working method of the power battery pack maintenance device. Firstly, a battery pack is charged through a charging circuit. When the highest monomer voltage in the battery pack reaches a set value, the charging circuit is opened and the isolating power supply module is turned on to charge the voltage of monomer batteries to a set value. Then, the battery pack is discharged through the discharging module till the lowest monomer reaches a set value, the discharging module is turned off and the battery pack is charged to a set remaining power quantity state through the charging module. Finally, after the information of the battery pack is recorded, the information is transmitted to a battery pack management system through the communication module. The power battery pack maintenance device can be used in 4S storages or other fixed maintenance places to realize the performance maintenance of large-scale power battery packs.

Description

technical field [0001] The invention relates to the technical field of battery charge control, in particular to a power battery pack maintenance device and a working method thereof. Background technique [0002] With the increasing application of lithium-ion battery packs, electric vehicles, electric buses, and large-scale energy storage systems have brought tremendous changes to human society. The battery pack system is one of several key technologies that affect the widespread application of lithium-ion battery packs. There are still no perfect solutions for several problems in the battery pack system, such as the estimation accuracy of battery pack power, the estimation of battery pack life, and the balance of large-capacity battery packs. The above-mentioned battery pack problems have hindered the development of battery pack systems. wide application. The current battery pack management system has no ideal solution to these problems, so that the safety and service life...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44H01M10/48
CPCY02E60/12Y02E60/10
Inventor 蒋新华那伟周家乐王晨
Owner SHANGHAI AEROSPACE POWER TECH
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