Current collection body for battery

A technology of battery collection and conductor nails, which is applied to electrode carriers/current collectors, small-sized batteries/battery packs, battery boxes/coatings, etc., and can solve problems such as uneven density of sealing rings, poor reliability, and reduced battery reliability. , to achieve the effect of filling the space with large active material, reducing the thickness and increasing the capacitance
CN101425567BInactive Publication Date: 2010-06-09ZHONGYIN NINGBO BATTERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGYIN NINGBO BATTERY CO LTD
Publication Date
2010-06-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a battery collector body. A sealing ring thereof is a rotating body; the bottom cover of the rotating body is provided with a raised structure protruding towards the sealing ring; and a deflation hole on the bottom cover is arranged in the raised structure. The raised structure is used for supporting the sealing ring when the sealing ring falls down due to a broken explosion-proof channel, thereby a broken opening communicated with the sealing ring and a deflation channel of the deflation hole are formed. Because the sealing ring is the rotating body, the mass distribution of the sealing ring is more uniform during the injection mold and processing, thereby the problem that the sealing ring is friable and easily broken in the prior art is effectively avoided, the service life is prolonged, and the reliability is improved. Because the deflation hole is arranged in the raised structure and is not on an identical plane with the bottom surface of the bottom cover, the tail end of a holddown spring is not easy to extend. In addition, because the thickness of the sealing ring is relatively lowered, the inside of the battery is ensured to have a larger space filledwith active substances, thereby the capacitance of the battery is obviously improved.
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Description

technical field

[0001] The invention relates to the field of battery sealing and explosion protection, in particular to a battery current collector structure. Background technique

[0002] The current collector is an important structure in the battery, and its functions mainly include three aspects: one is to collect and transmit the current generated by the negative part of the battery inside; the other is to seal, that is, to close the opening at the bottom of the battery case; the third is to prevent explosions , to prevent the battery from exploding due to its internal gas pressure being too high.

[0003] Please refer to figure 1 , figure 2 as well as image 3 , figure 1 It is a structural schematic diagram of a battery current collector in the prior art; figure 2 for figure 1 Schematic diagram of the structure of the sealing ring in the current collector shown; image 3 for figure 2 Bottom view of the seal shown.

[0004] The current collector usually inclu...

Claims

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