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Battery cover board assembly, battery and battery pack, and manufacture method thereof

A technology of battery cover plate and manufacturing method, which is applied in the direction of secondary battery manufacturing, battery pack parts, electrical components, etc., can solve the problems of easy short circuit of electrode terminals and hollow rivets, achieve the effect of preventing short circuit and improving safety performance

Active Publication Date: 2012-05-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the electrode terminals and hollow rivets are easy to short circuit when manufacturing and using batteries, the invention provides a safe and reliable battery cover assembly

Method used

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  • Battery cover board assembly, battery and battery pack, and manufacture method thereof
  • Battery cover board assembly, battery and battery pack, and manufacture method thereof
  • Battery cover board assembly, battery and battery pack, and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like Figure 4 As shown, the cover plate assembly includes a cover plate 7, a hollow rivet 8, an injection molded part and an electrode terminal 2. The cover plate 7 is provided with a through hole, and a hollow rivet 8 is welded at the through hole. The hollow part of the hollow rivet 8 and the cover plate 7 The upper through holes are connected; the electrode terminal 2 is passed through the upper through hole of the hollow rivet 8 and the cover plate 7, and then the sealing material is injected into the through hole of the hollow rivet 8 and the cover plate 7, and the hollow rivet 8 and the cover plate 7 are connected. A sealing member 9 is formed in the hole. At this time, the electrode terminal 2 is injected into the sealing member 9, so that the sealing member 9 is higher than the upper part of the hollow rivet and wraps around the upper part of the hollow rivet to form a flanging structure 90 to seal the electrode terminal 2; preferably, The sealing member 9 can ...

Embodiment 2

[0047] The invention discloses a battery (or single battery), including a casing (not shown in the figure), a cover plate assembly, an electrolyte and a pole core. The cover plate assembly has been described in detail in Embodiment 1, including a cover plate 7. Hollow rivets 8, seals 9 and electrode terminals 2; the pole core and electrolyte are packaged in the sealed space formed by the casing and the cover assembly; the pole core is electrically connected to the electrode terminal 2, and the electrode terminal 2 includes a positive terminal and the negative terminal; the cover plate 7 is provided with a through hole, and the electrode terminal 2 is drawn through the through hole as a positive pole and a negative pole. The hollow rivet 8 and the sealing member 9 can be called a sealing structure, and the electrode terminal 2 is sealed through the sealing structure. The sealing member 9 is inside the hollow rivet 8, the electrode terminal 2 passes through the sealing member 9, ...

Embodiment 3

[0073] This example mainly introduces the power battery pack, and the batteries 1 prepared in Example 2 are connected in series, in parallel or in parallel according to the required output current and voltage.

[0074] The batteries 1 may be connected in series or in parallel, and multiple batteries 1 may be connected in series or in parallel by connecting the electrode terminals 2 of the batteries 1 in different ways. like figure 2 As shown, the batteries 1 are connected in series, one electrode terminal 2 of one battery 1 is connected to the electrode terminal 2 of the opposite polarity of an adjacent battery 1, and the other electrode terminal 2 is connected to the electrode terminal 2 of another adjacent battery 1. The electrode terminals 2 with opposite polarities are connected. The ways of connecting the batteries 1 in series include but are not limited to the following ways: the negative terminal 23 of the battery 1 at one end is connected to the positive terminal 22 ...

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Abstract

The invention discloses a battery cover board assembly, a battery and a battery pack, and a manufacture method thereof. The battery cover board assembly comprises a cover board, a hollow rivet, a sealing member and an electrode terminal, wherein the cover board is provided with a through hole, the through hole is communicated with the hollow part of the hollow rivet, and the electrode terminal isin a sheet shape; the sealing member is arranged in the hollow rivet, the electrode terminal passes through the sealing member, and the hollow rivet clamps the sealing member so as to seal the electrode terminal; the sealing member is higher than the upper part of the hollow rivet and wraps up the upper part of the hollow rivet to form a flanged structure. The battery is a battery using the battery cover board assembly, and the battery pack is a battery pack formed by connecting a plurality of batteries. Due to adopting the scheme that the sealing member is higher than the upper part of the hollow rivet and wraps up the upper part of the hollow rivet so as to seal the electrode terminal, when the battery is shocked by an external force, causing the electrode terminal to deform, the exposed sealing material can prevent the short circuit between the electrode terminal and the rivet, thereby enhancing the safety performance of the battery.

Description

【Technical field】 [0001] The invention relates to the field of batteries, in particular to the field of battery cover components, and the field of sheet-shaped batteries connected in series or in parallel to form a battery pack. 【Background technique】 [0002] In the modern society where oil is increasingly scarce, electric vehicles have become an alternative vehicle that people consider. In vehicles such as electric vehicles and hybrid vehicles, a power battery pack composed of multiple batteries is generally used to meet the demand for high power output. The traditional battery pack connection structure such as figure 1 As shown, in this power battery pack 10, since screws and nuts are used as the positive pole 22 and the negative pole 24 of the battery, and the connector 40 is used for series operation, the connection method has a large contact internal resistance and a heavy weight of the battery pack. and many other defects. At the same time, if there is looseness be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/04H01M2/06H01M10/04H01M10/38H01M50/572
CPCY02E60/12Y02T10/7005Y02T10/7011Y02E60/10Y02P70/50
Inventor 朱建华周皓
Owner BYD CO LTD