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Prismatic cell

A battery, square technology, applied in nickel batteries, alkaline batteries, secondary batteries, etc., can solve the problems of obvious battery temperature rise, limited welding area of ​​components, and small internal space of batteries, etc., to widen the current transmission channel, battery safety Performance improvement, avoiding the effect of battery safety performance

Inactive Publication Date: 2010-09-15
湖南科霸汽车动力电池有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current collectors and poles, current collectors and pole plates are all welded. Due to the narrow space inside the battery, the welding area of ​​components is limited, the current transmission channel is narrow, the power consumption is large, and the temperature rise of the battery is obvious, which affects the stability of the single battery. The power characteristics of the power battery are not good
The charging and discharging current of the high-power battery is large, and the welding point is prone to heat effect, which reduces the welding strength. The vibration resistance is relatively low, which may seriously cause connection failure and lead to battery failure. At the same time, the current transmission channel is narrow and the local temperature is too high. battery short circuit, fire
The power battery reaches hundreds of amperes when it is charged and discharged with high current. It is generally used in hybrid vehicles, electric vehicles, high-power boosters, etc. The power battery must withstand the test of long-term vibration and high current charge and discharge. The welding quality directly affects the stability of the battery. The charging and discharging power, and the welding process is complicated, which may easily cause the pole to be desoldered, and the local high temperature in the battery may cause a short circuit and fire and other safety hazards

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0015] The square accumulator of the present invention, its longitudinal anatomical structure such as figure 1 As shown, it includes a rectangular casing 1, a sealing cover 2, a battery cell 3 built in the casing, a positive pole 4, a positive current collector 5, a negative pole 9 and a negative current collector. The battery cell 3 is composed of positive plates, diaphragms, and negative plates alternately stacked with each other. Holes are punched at the same positions of the white edge mesh parts 6 on one side of all positive plates, and the positive collectors are punched at the corresponding positions. Rivets 7 Connect the corresponding holes with the gasket 8, so that the positive plate is fixed on the positive current collector; the structure on one side of the negative electrode is the same as that of the positive electrode, that is, punch holes at the same position of the white edge mesh part on one side of the negative plate, and the negative plate is white The side...

Embodiment 2

[0018] The schematic view of the longitudinal anatomical structure of the square accumulator of the present invention is as figure 2 As shown, the positive column 4 and the positive collector 5 are a Shaped overall module, the short side shows the pole, and the long side shows the collector; the negative pole and the negative collector correspond to a The short side shows the pole, and the long side shows the collector; the positive pole 4 and the negative pole 9 are both exposed outside the shell 1 and are sealed with the shell 1. All the other structures are the same as in Example 1.

[0019] The method of this embodiment and the existing method were used to manufacture square metal hydride nickel storage batteries, respectively, and their vibration resistance performance was tested under the same test conditions. A square storage battery with a structure shows that, in practical application, the safety and stability of the square storage battery with the structure of t...

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Abstract

The invention provides a prismatic cell which comprises a rectangular shell, a sealing cover, a battery cell built in the shell, an anode column, an anode current converging piece, a cathode column and a cathode current converging piece, wherein the battery cell is formed by mutually and alternatively laminating an anode plate, a diaphragm and a cathode plate, punching is respectively carried out on the white edge net position on one side edges of the anode plate and the cathode plate, the current converging piece is punched at the position corresponding to the current converging piece, and a fastening piece is used for connecting the corresponding holes so as to fix the polar plates on the current converging piece; and the polar columns are integrated with the current converging piece into a whole module. The prismatic cell of the invention can effectively broaden a current transmission channel and improve the high-current discharging property and the cell vibration resistance, thereby improving the stability and the safety of the operation of the cell.

Description

technical field [0001] The invention relates to a storage battery, in particular to a square storage battery. Background technique [0002] In the current square storage battery structure, there is a white edge on one end edge of the positive plate and the negative plate in the same direction or in the opposite direction, and the white edge is welded to one side of the tab or the current collector; The different electrode columns of the body are welded together. Current collectors and poles, current collectors and pole plates are all welded. Due to the narrow space inside the battery, the welding area of ​​components is limited, the current transmission channel is narrow, the power consumption is large, and the temperature rise of the battery is obvious, which affects the stability of the single battery. The power characteristics of the power battery are not good. The charging and discharging current of the high-power battery is large, and the welding point is prone to hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/00H01M10/30H01M2/26H01M2/30H01M50/531H01M50/567
CPCY02E60/124Y02E60/10
Inventor 刘卫军石建珍
Owner 湖南科霸汽车动力电池有限责任公司
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