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Battery pack

A technology of battery components and battery cells, which is applied to battery pack parts, electrical components, secondary batteries, etc. It can solve the problems of complex conductive end plate process, thick overall thickness, and high resistance value, and achieve excellent welding performance and low resistance. performance, the effect of excellent electrical conductivity

Active Publication Date: 2004-12-01
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the above-mentioned conductive terminal plate used in conventional battery packs, especially the conductive terminal plate described in Patent Document 1 has the following problems in that its overall thickness is thick due to the metal layered structure, and its resistance value is high
Furthermore, there is a problem with the conductive terminal plate described in Patent Document 2 that the process for producing the conductive terminal plate is complicated and difficult to operate

Method used

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Embodiment Construction

[0025] An embodiment of the battery assembly of the present invention will be described below with reference to the accompanying drawings.

[0026] refer to Figures 2 to 4 This embodiment of the present invention will be described. exist figure 2 , in an approximately rectangular housing made of an insulating material such as plastic, the battery pack houses four rechargeable battery cells 13, such as NiCd cells, NiMH cells, Li-ion cells, Li-metal A cylindrical secondary battery such as a battery. Also, the positive electrode 13a and the negative electrode 13b of the battery cell 13 are connected to the isolated end plates 14-1, 14-2, respectively.

[0027] Also, each protrusion on one end of the isolated end plate 14-1, 14-2 is inserted and connected to copper foil lands 15a, 15b, each copper foil lands 15a, 15b has a slit formed on the control circuit substrate 15, and then is connected by welding or the like before it is installed in the above-mentioned case, leading ...

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Abstract

A battery pack housing a plurality of battery cells in a case and respectively connecting the positive electrodes and the negative electrodes of the plurality of battery cells to conductive terminal boards to be led out to outside terminals is provided. The conductive terminal board has a structure in which a first member is joined with a second member such that the first member having excellent weldability is arrayed in a plurality-of-islands state in the second member having excellent conductivity, and the positive electrodes and the negative electrodes of the battery cell are welded to the first member of the conductive terminal board through resistance-welding, so that the battery pack capable of efficiently supplying a large amount of current is provided.

Description

technical field [0001] The present invention relates to a battery pack which accommodates a plurality of rechargeable battery cells in a casing and can be used as a power source in portable devices such as video cameras, portable personal computers, digital cameras, mobile phones, PDAs, and the like. Background technique [0002] figure 1 A conventional rechargeable battery pack is shown. refer to figure 1 An example of this battery pack will be described. [0003] exist figure 1 Among them, the battery pack is a rechargeable secondary battery such as a cylindrical nickel-cadmium battery or nickel-metal hydride battery, lithium-ion battery, lithium metal battery, etc. A plurality of battery cells 13 composed of secondary battery cells. Then, the positive electrode 13a and the negative electrode 13b of the battery cell 13 are respectively connected by resistance welding to end plates 4-1, 4-2 made of a single metal plate having good weldability such as nickel. In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/00H01M50/296H01M50/529
CPCH01M2/30Y02E60/12H01M2/24H01M2/1005Y02E60/10H01M50/256H01M50/529H01M50/296B22D35/04B22D41/13B22D41/06
Inventor 佐藤文哉
Owner MURATA MFG CO LTD
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