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Battery information processing system, battery assembly, method of evaluating characteristics of battery module, and method of manufacturing battery assembly

一种信息处理系统、电池模块的技术，应用在电池/燃料电池控制装置、电池组零部件、电池等方向，能够解决二次电池劣化等问题

Active Publication Date: 2019-11-05
TOYOTA JIDOSHA KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondary batteries degrade with repeated charge and discharge or with the passage of time

Method used

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  • Battery information processing system, battery assembly, method of evaluating characteristics of battery module, and method of manufacturing battery assembly
  • Battery information processing system, battery assembly, method of evaluating characteristics of battery module, and method of manufacturing battery assembly
  • Battery information processing system, battery assembly, method of evaluating characteristics of battery module, and method of manufacturing battery assembly

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Experimental program
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Embodiment approach

[0039] figure 1 It is a diagram showing one mode of logistics from collection to manufacture and sale of the battery pack in this embodiment. Below, will figure 1 The manner of logistics shown is called "battery logistics model". figure 2 yes means figure 1 Flowchart of the process flow in the battery logistics model shown.

[0040] refer to figure 1 as well as figure 2 , in this battery logistics model, used battery packs are collected from a plurality of vehicles equipped with battery packs, and battery packs are manufactured and sold using reusable modules contained in the collected battery packs. In addition, the battery pack mounted on a certain user's vehicle 90 can be replaced.

[0041] The recycling company 10 collects used battery packs from the vehicles 91 to 93 . Vehicles 91 to 93 are equipped with assembled batteries 910 to 930 , respectively. In addition, in figure 1 In , only 3 vehicles are shown for the convenience of presentation on paper, but batter...

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Abstract

The disclosure provides a battery information processing system, a battery assembly, a method of evaluating characteristics of the battery module, and a method of manufacturing a battery assembly. A battery information processing system includes an analyzer configured to analyze a result of measurement of an AC impedance of a module M. The analyzer plots the result of measurement of the AC impedance on a first frequency characteristic diagram which is a Bode diagram (a first diagram) relating to a real number component of the AC impedance and on a second frequency characteristic diagram whichis a Bode diagram (a second diagram) relating to an imaginary number component of the AC impedance, obtains a polynomial curve L1 by fitting processing onto a result of plotting on the first diagram and obtains a polynomial curve L2 by fitting processing onto a result of plotting on the second diagram, and converts the polynomial curves L1 and L2 into an impedance curve Z on a Nyquist diagram.

Description

technical field [0001] The present disclosure relates to a battery information processing system, a battery pack, a battery module characteristic evaluation method, and a battery pack manufacturing method, and more particularly to information processing for evaluating characteristics such as internal resistance or full charge capacity of a battery module including a plurality of secondary batteries technology. Background technique [0002] In recent years, electric vehicles equipped with a secondary battery (more specifically, a battery pack configured to include a plurality of secondary batteries) have become popular. A secondary battery deteriorates with repeated charge and discharge or with the passage of time. Therefore, it is required to recover the on-vehicle secondary battery, diagnose the degree of deterioration, and perform appropriate treatment for reuse based on the diagnosis result. [0003] An AC impedance measurement method is known as a method for diagnosing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M2/10B60L58/10H01M50/204H01M50/253
CPCH01M10/4285H01M10/425B60L58/10H01M2010/4271H01M2010/4278H01M10/482H01M50/253H01M50/204H01M2220/20H01M10/345Y02E60/10Y02T10/70G01R31/389G01R31/367G01R31/396
Inventor 儿玉和也
Owner TOYOTA JIDOSHA KK
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