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Separation device making use of battery impedance spectrum

A battery impedance and sorting technology, which is applied in sorting and other directions, can solve the problems of general operators’ acceptance, cumbersome and limited measurement of electrochemical impedance spectroscopy, and achieve the effect of excellent sorting results, good consistency and fast speed

Inactive Publication Date: 2013-06-05
HARBIN ZHIMU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on EIS is still mostly limited to the laboratory, and the process of measuring EIS is very cumbersome and cannot be accepted by ordinary operators.

Method used

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  • Separation device making use of battery impedance spectrum
  • Separation device making use of battery impedance spectrum
  • Separation device making use of battery impedance spectrum

Examples

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Effect test

example 1

[0029] Referring to accompanying drawing 1,

[0030] (1) Prepare 100 18650-type lithium-ion batteries as the batteries under test;

[0031] (2) Connect a battery under test to the circuit through a special four-wire fixture;

[0032] (3) Control and data processing DP first controls the high-speed sampling unit AD to start high-speed sampling;

[0033] (4) Control the current of the constant current source HL to charge the battery under test BT;

[0034] (5) After the voltage and current signals of the tested battery BT are conditioned by the voltage and current signal processing module VI, they are digitally processed by the high-speed sampling unit AD, and then obtained by the control and data processing DP;

[0035] (6) Control and data processing DP closes the constant current source HL output, and then stops the high-speed sampling unit AD;

[0036] (7) The voltage and current data of the tested battery are uploaded to the storage and sorting processing SFP;

[0037] ...

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Abstract

The invention relates to a separation device making use of battery impedance spectrum, provides a process simplifying battery impedance spectrum measurement and further provides a battery separation method according to the battery impedance spectrum. Batteries to be measured are connected to a circuit through a special four-wire clamp, control and data processing (DP) first controls a high speed sampling unit analogue digital (AD) to start high speed sampling, then constant flow source horizontal line (HL) current is controlled to charge the batteries (British telecom) BT to be measured, and after being conditioned through a voltage current processing module VI, the voltage and current signals of the batteries BT to be measured are processed in a digital mode through the high speed sampling AD and are obtained by the control and data processing DP. After the measurement is completed, the control and data processing DP closes the output of the constant flow source HL, then the high speed sampling AD is stopped, then the obtained voltage and current data are uploaded to storage and separation system file protection (SFP), the same batteries are organized in a category by the storage and separation SFP according to separation conditions set by a user, and thereby the battery separation is completed.

Description

technical field [0001] The invention relates to a sorting device using the battery impedance spectrum, and proposes a battery sorting method using the battery impedance spectrum, which belongs to the field of battery detection. Background technique [0002] With the continuous expansion of battery application fields, batteries have become an indispensable form of energy in contemporary society. In recent years, with the development of electric vehicles, the demand for batteries has surged, and the performance requirements for batteries have become higher and higher, and , due to the large number of batteries required by an electric vehicle, the consistency of batteries has become a key factor in determining the overall performance of electric vehicle battery packs. How to control and select the consistency of batteries has become an important issue facing the battery industry. [0003] Traditional battery classification methods such as capacity sorting, internal resistance s...

Claims

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Application Information

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IPC IPC(8): B07C5/344
Inventor 李金录李革臣
Owner HARBIN ZHIMU TECH
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