A rapid screening device and method for charging and discharging characteristics of lithium batteries

A technology of lithium batteries and lithium battery packs, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., which can solve the problems of reducing energy efficiency during life, adding lithium batteries, and high time costs

Active Publication Date: 2021-04-27
南京涛博能源科技有限公司
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Problems solved by technology

[0003] However, the traditional screening device and method are commonly used devices and methods for the formation of lithium batteries before leaving the factory. They have the following problems. They all need to increase the primary charging and discharging process of the lithium battery again, resulting in large energy loss and reducing energy efficiency during the service life; In addition, batch screening In this case, a considerable number of test grids are required, more than 2 hours of test time are required, and the cost of equipment and time is high

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  • A rapid screening device and method for charging and discharging characteristics of lithium batteries

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Embodiment Construction

[0019] The rapid screening device for charging and discharging characteristics of lithium batteries in the present invention will be further described with reference to the accompanying drawings.

[0020] As shown in the accompanying drawings, this embodiment is a rapid screening device for charging and discharging characteristics of a lithium battery, including a lithium battery cell, a supercapacitor, a discharge device, a charging device and a detection device, the charging device, the discharging device, the supercapacitor The capacitor is coupled with the lithium battery cell through a strong current, and the detection device is respectively coupled with the charging device, the discharge device and the lithium battery cell through a weak current.

[0021] A method for screening the consistency of lithium battery packs using the above-mentioned rapid screening device, comprising the following steps:

[0022] 1) Select a number n of lithium battery cells for the screening ...

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Abstract

The invention discloses a rapid screening device for charging and discharging characteristics of a lithium battery, which includes a lithium battery cell, a supercapacitor, a discharge device, a charging device and a detection device. The battery cell is coupled, and the detection device is respectively coupled with the charging device, the discharging device and the lithium battery cell through a weak current.

Description

technical field [0001] The invention mainly relates to the technical field of lithium batteries, in particular to a rapid screening device and method for charging and discharging characteristics of lithium batteries. Background technique [0002] In the prior art, the service life of a single lithium battery cell is higher than that of a grouped lithium battery system, mainly because the consistency of the grouped lithium battery cells is not high enough. The consistency of lithium battery production is a recognized problem in the industry. Although relatively consistent batteries are screened through methods such as voltage and internal resistance, using the range coefficient method, standard deviation washing method and threshold method, the consistency of batteries in the battery pack is difficult. Maintenance is affected by many factors, such as temperature field, battery polarization, self-discharge, etc. Therefore, the control of the consistency of the batteries in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/344G01R31/396G01R31/378
CPCB07C5/344G01R31/36G01R31/378
Inventor 周汉涛顾金鑫代晓峰葛晨曦
Owner 南京涛博能源科技有限公司
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