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Electrode terminal, battery cover cap comprising electrode terminal, and battery thereof

A technology of electrode terminals and caps, applied in the field of battery caps and their batteries, can solve the problems of battery deformation, high battery pressure, blockage of exhaust holes, etc.

Active Publication Date: 2009-12-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor of the present invention, after many studies and experiments, found that because the vent hole of the electrode terminal of the existing battery is usually circular, the inner diameter of the hole is likely to cause the vent hole to be blocked when the connecting piece is welded, thereby causing the exhaust to be blocked. , resulting in high internal pressure of the battery, deformation of the battery, and even explosion and scrapping of the battery
[0005] The purpose of the present invention is to overcome the defect that the traditional electrode terminal is not normally exhausted, and to provide an electrode terminal that is normally exhausted.

Method used

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  • Electrode terminal, battery cover cap comprising electrode terminal, and battery thereof
  • Electrode terminal, battery cover cap comprising electrode terminal, and battery thereof
  • Electrode terminal, battery cover cap comprising electrode terminal, and battery thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The making of the electrode terminal 1, the hole 2 of the electrode terminal 1 is prepared by punching, and the edge shape of the non-circular hole is semicircular ( figure 1 Be the first kind of embodiment of the present invention), the radius of its semicircle is 2 millimeters.

[0041] Battery production: combine the general nickel positive electrode, cadmium negative electrode and diaphragm, wind them into a cylindrical nickel-plated steel shell, inject lye, use the above electrode terminal 1, and make a battery cap, put the battery cap It is sealed and made into a Sc-type battery with a certain capacity, which is denoted as A1.

Embodiment 2

[0043] The manufacture of the electrode terminal 1, the hole 2 of the electrode terminal 1 is prepared by punching, and the edge shape of the non-circular hole used in this embodiment is a rectangle ( Figure 5 is the second embodiment of the present invention), the length of the rectangle is 2.5 millimeters.

[0044] Battery production: combine the general nickel positive electrode, cadmium negative electrode and diaphragm, wind them into a cylindrical nickel-plated steel shell, inject lye, use the above electrode terminal 1, and make a battery cap, put the battery cap It is sealed and made into a Sc-type battery with a certain capacity, which is denoted as A2.

Embodiment 3

[0046] For the manufacture of the electrode terminal 1, the hole 2 of the electrode terminal 1 is prepared by punching, and the edge shape of the non-circular hole used in this embodiment is a triangle ( Image 6 is the third embodiment of the present invention), the height of the triangle is 4 millimeters.

[0047] Battery production: combine the general nickel positive electrode, cadmium negative electrode and diaphragm, wind them into a cylindrical nickel-plated steel shell, inject lye, use the above electrode terminal 1, and make a battery cap, put the battery cap It is sealed and made into a Sc-type battery with a certain capacity, and this battery is recorded as A3.

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Abstract

The invention discloses an electrode terminal, which is connected with a connecting piece, the middle of the electrode terminal is provided with a hole which is non-circular, and the maximum inside diameter of the hole is greater than the width of the connecting piece. The invention also provides a battery cover cap and a battery, wherein the battery comprises a shell, a winding electrode core sealed in the shell and consists of an anode pole piece, a septum and a cathode pole piece, electrolyte and a battery cover cap; the battery cover cap comprises an electrode terminal, a cover cap body, and an anti-explosion ball; the electrode terminal is connected with the connecting piece; and the middle of the electrode terminal is provided with a hole which is non-circular, and the maximum inside diameter of the hole is greater than the width of the connecting piece. The electrode terminal structure is adopted, thereby increasing the hole area of the electrode terminal, preventing the connecting piece from blocking the hole of the electrode terminal, ensuring the smooth exhaust, allowing for normal use of the battery, and avoiding battery scrapping caused by explosion.

Description

technical field [0001] The present invention relates to batteries, and more specifically, to an electrode terminal, a battery cap containing the electrode terminal and a battery thereof. Background technique [0002] At present, a cylindrical battery generally includes a battery casing, a battery cell and an electrolyte contained in the casing, and the battery cell includes a positive electrode sheet, a separator, and a negative electrode sheet stacked together in sequence. The electrode terminal, usually the battery terminal is connected to the battery pole piece through the connection piece, and serves as a lead-out terminal, which plays a role of conduction. [0003] Because the exhaust hole of the electrode terminal of the existing battery is blocked when the connecting piece is welded, the internal pressure of the battery is large, the battery is deformed, and even the battery explodes. Contents of the invention [0004] The inventor of the present invention, after m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/30H01M2/04H01M2/12H01M50/10H01M50/147H01M50/186H01M50/30H01M50/543
CPCY02E60/12Y02E60/10
Inventor 伦玉华
Owner BYD CO LTD