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A power battery pack and its protective conductive plate

A technology of power battery packs and conductive plates, which is applied to battery pack parts, secondary battery manufacturing, circuits, etc., can solve problems such as explosion, battery damage, and combustion, and achieve the goal of preventing diffusion, protecting safety, and ensuring anti-vibration capabilities Effect

Active Publication Date: 2017-05-24
上海奇可网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In a normal balancing circuit, the current flowing between the parallel cells is very small, but if one of the cells is short-circuited, the other cells connected in parallel will be short-circuited at the same time, and the current in the parallel group will surge To 50 times or even 100 times the normal current, not only will all the batteries in the parallel group be damaged, but it will also cause serious consequences such as burning and explosion

Method used

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  • A power battery pack and its protective conductive plate
  • A power battery pack and its protective conductive plate
  • A power battery pack and its protective conductive plate

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 with 2 As shown, a power battery pack, the battery includes several single cells 1 arranged in a matrix and connected in parallel, the positive and negative electrodes of the battery are respectively connected with a positive conductive sheet 2 and a negative conductive sheet 3, the positive conductive The thin plate 2 is a protective conductive plate. The protective conductive plate includes a plate body 5 and several electrode connecting pieces 4 arranged in a matrix. Each electrode connecting piece 4 is connected to the electrodes of each single battery. The left and right sides of the electrode connecting pieces There are two isolation grooves symmetrically, and the isolation grooves include a semi-circular groove 6 and a linear groove 8 arranged at both ends of the semi-circular groove. The electrode connecting piece 4 forms two slender flat belts between the linear grooves 8 on the left and right sides. 7. The electrode connecting piece 4 is elec...

Embodiment 2

[0026] Such as figure 1 with 3 As shown, a power battery pack, the battery includes several single cells 1 arranged in a matrix and connected in parallel, the positive and negative electrodes of the battery are respectively connected with a positive conductive sheet 2 and a negative conductive sheet 3, the negative conductive sheet The thin plate 3 is a protective conductive plate. The protective conductive plate includes a plate body 5 and several electrode connecting pieces 4 arranged in a matrix. Each electrode connecting piece 4 is connected to the electrodes of each single battery. The left and right sides of the electrode connecting pieces There are two isolation grooves symmetrically, and the isolation grooves include a semi-circular groove 6 and a linear groove 8 arranged at both ends of the semi-circular groove. The electrode connecting piece 4 forms two slender flat belts between the linear grooves 8 on the left and right sides. 7. The electrode connecting piece 4 i...

Embodiment 3

[0031] Such as figure 1 with 3 As shown, a power battery pack, the battery includes several single cells 1 arranged in a matrix and connected in parallel, the positive and negative electrodes of the battery are respectively connected with a positive conductive sheet 2 and a negative conductive sheet 3, the positive conductive The thin plates 2 and the negative conductive thin plates 3 are all protective conductive plates, and the protective conductive plates include a plate body 5 and a plurality of electrode connecting pieces 4 arranged in a matrix, each electrode connecting piece 4 is connected to the electrodes of each single battery, and the electrodes Two isolating grooves are symmetrically arranged on the left and right sides of the connecting sheet, and the isolating grooves include a semi-annular groove 6 and a linear groove 8 arranged at both ends of the semi-annular groove. An elongated flat strip 7, through which the electrode connecting piece 4 is electrically con...

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Abstract

The present invention proposes a protective conductive plate for a power battery pack. The power battery pack includes several single cells arranged in a matrix and connected in parallel with each other. The protective conductive plate includes a plate body and several electrodes connected in a matrix. The electrode connecting sheet is symmetrically provided with two isolation grooves on the left and right sides, and the electrode connecting sheet forms two slender flat belts between the ends of the isolation grooves on the left and right sides. body electrical connection. When the present invention is used, when a short circuit occurs in a single battery inside the battery pack, the slender flat strip of the electrode connecting sheet will be fused, thereby removing the possible overcurrent single battery from the battery matrix. Isolation prevents the spread of the faulty single battery and protects the safety of the battery.

Description

technical field [0001] The invention relates to an electrode connecting part of a power battery pack, in particular to a protective conductive plate of a power battery pack. Background technique [0002] The output current of the battery pack can be increased by connecting the single cells in parallel, and the voltage of the battery pack can be increased by connecting them in series. The power battery used in new energy vehicles is composed of several single batteries through a certain series and parallel combination to finally reach the required voltage and current. [0003] In a normal balancing circuit, the current flowing between the parallel cells is very small, but if one of the cells is short-circuited, the other cells connected in parallel will be short-circuited at the same time, and the current in the parallel group will surge To 50 times or even 100 times the normal current, not only will all the batteries in the parallel group be damaged, but it will also cause ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/20H01M2/34H01M10/04H01M50/503H01M50/505H01M50/583
CPCH01M10/04H01M50/502H01M50/572Y02E60/10Y02P70/50
Inventor 李革臣程从彬李然
Owner 上海奇可网络科技有限公司
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