Monomer battery and power battery pack containing same

A single battery and battery case technology, which is applied to large-size batteries/battery packs, small-size batteries/battery packs, large flat batteries/batteries, etc., and can solve the problem that batteries cannot meet high-power discharge requirements

Active Publication Date: 2010-11-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects that the structure of the existing battery still cannot meet the demand for high-power discharge, and there are potential safety hazards, and provide a single battery and a battery pack that can discharge at a high rate and are safer and more reliable.

Method used

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  • Monomer battery and power battery pack containing same
  • Monomer battery and power battery pack containing same
  • Monomer battery and power battery pack containing same

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] A single battery includes a battery casing, a cover plate and a pole core. The pole core is inside the battery casing, and the pole core includes a positive pole piece, a negative pole piece, and a diaphragm arranged between the positive pole piece and the negative pole piece. The pole core is also provided with positive and negative pole lugs for drawing current. The cover plate is sealingly connected with the battery case, and the cover plate is also provided with an electrode terminal penetrating through the cover plate for drawing out current. The second end portion outside the housing; the electrode terminals include positive electrode terminals and negative electrode terminals. The first end of the positive electrode terminal is connected to the positive tab, and there are at least two positive electrode terminals; the first end of the negative electrode terminal is connected to the negative tab, and there are at least two negative electrode terminals.

[0024] A...

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Abstract

The invention provides a monomer battery which comprises a battery shell, a cover plate and a polepiece, wherein the cover plate is in a seal connection with the battery shell; the polepiece is positioned in a space formed by the battery shell and the cover plate; pole terminals, which penetrate through the cover plate and are used for leading the current out, are arranged in the cover plate; and each polarity at least has two pole terminals; the invention also provides a power battery pack containing the monomer battery. The battery and the battery pack enhance the high-power discharge characteristic, and especially can further solve the problems in welding, so that the technique is simpler and can further solve the problems in heat emission, weight and the like in the battery. The battery with the structure and the battery pack have the advantages of firmer connection, and higher safety and reliability; and the battery pack has a longer service life.

Description

【Technical field】 [0001] The invention relates to a single battery and a power battery pack comprising the single battery. 【Background technique】 [0002] As batteries are more and more widely used, their performance requirements are also getting higher and higher, especially more and more devices require high power output, such as electric vehicles, generally by connecting multiple single cells into a power battery pack In use, the battery pack generally uses the screws and nuts of the battery as the positive and negative poles, and then connects the positive and negative poles of the parallel, series or hybrid batteries to form the required high-power battery. The internal resistance between the batteries in this connection is relatively large. That is, the conduction area of ​​the current in the effective space is restricted, and the rate performance of the battery is restricted. [0003] The present applicant proposed in ZL200720147273 that the battery structure adopts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/00H01M10/04H01M2/30H01M2/26H01M4/02H01M2/02H01M2/04H01M2/08H01M2/20H01M50/10H01M50/103H01M50/147H01M50/183H01M50/209H01M50/50H01M50/509H01M50/514H01M50/531H01M50/54H01M50/543
CPCY02E60/12H01M2/024H01M10/0413H01M2/206H01M2/1077H01M2/266Y02E60/10H01M50/54Y02P70/50H01M50/514H01M50/209H01M50/103H01M50/509H01M50/531
Inventor 郑卫鑫
Owner BYD CO LTD
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