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Battery assembly

A battery assembly and flat battery technology, applied in battery pack components, batteries, electrical components, etc., can solve the problems of external short circuit, bad contact, loss of overcurrent protection function, etc., and achieve the effect of miniaturization and space reduction

Inactive Publication Date: 2004-08-18
TOSHIBA BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the problem is that the fuse loses its overcurrent protection function after it is blown.
At this time, the regular surface contact state of the plane terminal on the battery side and the plane terminal on the phone body side is destroyed, and poor contact is formed between the two.
[0021] Also, since the flat terminals are exposed, if the battery is placed in a purse or handbag inadvertently, it may easily come into contact with other metal objects and cause an external short circuit.
In addition, when the surface of the flat terminal is contaminated with sweat, etc., when it is mounted on the main body of the phone, the conduction state with the connection terminal will also deteriorate.

Method used

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Experimental program
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Effect test

Embodiment

[0239] First, a flat battery having a positive electrode tab made of aluminum with a thickness of 100 μm and a width of 3 mm and a negative electrode tab made of Ni with a thickness of 100 μm and a width of 100 mm was prepared.

[0240] In addition, eutectic solder foil was mounted on the positive electrode side bonding surface and the negative electrode side bonding surface that were rectangular in length 4mm and width 3mm, both of which were composed of Cu, and the eutectic solder foil on the positive electrode side bonding surface was mounted A composite sheet (length 4mm, width 3mm) composed of Al foil with a thickness of 150 μm and a Ni foil with a thickness of 150 μm, with the Ni foil facing down; Foil (length 4mm, width 3mm). Then, the above-mentioned laminated sheet as a whole is subjected to reflow treatment at a temperature of 200° C., left to cool at room temperature, and prepared as follows: Figure 43 circuit board 6 shown.

[0241] Next, the positive electrode ...

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Abstract

A battery pack which includes a flat battery cell having positive and negative electrode tabs (1a,2a), a circuit board (6) connected to the positive and negative electrode tabs; and a container (16) having two main walls extending along two main surfaces of the flat battery cell. At least a portion of the circuit board is positioned in a space (8) defined by a sealing of the armor material beside the circuit board and the inner surface of the container. At least one of the two main walls of the container is at least partially formed of a metal plate (12a,14a).

Description

technical field [0001] The present invention relates to a small-sized and light-weight battery pack containing flat (type) batteries in a battery case. Background technique [0002] Along with the miniaturization and weight reduction of various electronic devices such as mobile phones and cameras, people have proposed, in addition to improving the characteristics of the battery such as high energy density, as a driving power source for electronic devices, such as Li-ion secondary batteries. Meet the requirements of miniaturization, thinning and light weight. [0003] In order to prevent the leakage of the electrolyte, the Li-ion secondary battery is formed by encapsulating the electrodes and the electrolyte in the battery case. In order to meet the above-mentioned thinning requirements of the battery, it is necessary to reduce the thickness of the battery case. However, it is difficult to manufacture a thin battery case by deep drawing. Furthermore, when a thin battery cas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/50H01M10/42H01M50/296H01M50/55H01M50/553H01M50/562H01M50/566
CPCY02E60/12H01M2/30H01M2200/106H01M10/425H01M2/1066H01M2/1061Y02E60/10H01M50/562H01M50/296H01M50/55H01M50/553H01M50/566
Inventor 叶山秀树田中晴彦武石龙太栗原雄
Owner TOSHIBA BATTERY