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Power Supply Apparatus

A technology for power supply devices and single batteries, which is applied in circuits, electrical components, secondary batteries, etc., can solve the problems of battery performance (deterioration of input and output characteristics, insufficient research on optimal shape, etc.), to suppress expansion and prevent damage , The effect of smooth contact area

Active Publication Date: 2013-05-08
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The single cell of the secondary battery expands due to repeated charging and discharging, and the battery performance (input and output characteristics) deteriorates due to the expansion
[0009] However, in the structure of Patent Document 1, the separator is a structure that uniformly presses the wide surface of the outer case can, but the optimal separator for efficiently suppressing the deterioration of the battery performance of the prismatic battery due to swelling. The shape has not been fully studied, so a solution that can effectively prevent the swelling of the prismatic battery is expected

Method used

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Examples

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Embodiment Construction

[0044] The following is based on Figure 1 to Figure 14 Embodiments of the present invention will be described in detail.

[0045] figure 1 It is a perspective view of the power supply device 1 according to the embodiment of the present invention. Such as figure 1As shown, the power supply device 1 has: a battery block 4, which is formed by alternately stacking square batteries 2 and insulating separators 3; end plates 5, which are arranged at both ends of the battery block 4; binding rods 6, which are erected The battery block 4 is connected to the end plate 5 in a state of being pressed in the stacking direction as a connecting member.

[0046] The rectangular batteries 2 constituting the battery block 4 are stacked so that their output terminals 21 are lined up on the upper surface of the battery block 4 , and adjacent rectangular batteries 2 are connected to each other via bus bars 8 . The square batteries 2 are connected in series, thereby increasing the output voltag...

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Abstract

The present invention provides a power supply apparatus formed. Adjacent battery cells can be insulated and the expansion of the battery cell can therefore be efficiently suppressed. The power supply apparatus includes: a plurality of battery cells each having a flat rectangular parallelepiped outer can, the battery cells provided so that wide surfaces of the outer cans are opposed to each other; a separator provided between the battery cells; and a fastener fastening the battery cells and the separator with the battery cells under application of pressure. The wide surface of the outer can includes a circumference portion at a circumference of the wide surface and a central portion in a center of the wide surface. The separator includes an insulating portion insulating the adjacent battery cells and a pressing portion formed at a position corresponding to the central portion of the wide surface for pressing the central portion.

Description

technical field [0001] The invention relates to a power supply device with a plurality of single batteries. Background technique [0002] High voltage output and high current capacity are used in power supply devices such as hybrid vehicles, electric vehicles, and large power storage devices. As such a power supply device, there is a power supply device formed by stacking a plurality of cells. By connecting the cells in series, the output voltage of the power source device can be increased, and by connecting the cells in parallel, the current capacity of the power source device can be increased. A secondary battery is used as a single battery constituting the power supply unit so that it can be repeatedly charged and discharged. [0003] A unit cell of a secondary battery expands due to repeated charging and discharging, and battery performance (input-output characteristics) deteriorates along with the expansion. Therefore, in a power supply device configured by stacking a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/10H01M2/30H01M50/209H01M50/264H01M50/289H01M50/296H01M50/574H01M50/588H01M50/593
CPCY02E60/12H01M2/1077H01M2/30H01M2/345H01M2/02H01M10/0431H01M2/10H01M10/5004H01M2/34H01M2/0217H01M2/1094H01M10/613Y02E60/10H01M50/103H01M50/24H01M50/578H01M50/588H01M50/296H01M50/209H01M50/264H01M50/593H01M50/574H01M50/289
Inventor 小村哲司濑戸高志田岛光俊
Owner SANYO ELECTRIC CO LTD
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