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power supply unit

A power supply device and battery technology, which is applied in the direction of batteries, circuits, electric vehicles, etc., can solve the problems of shortened creepage distance on the bottom surface of the battery unit and can not effectively prevent leakage, etc., achieve excellent insulation characteristics, improve the reduction of insulation characteristics, reduce the The effect of manufacturing costs

Active Publication Date: 2022-04-26
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the bottom surface of the battery cells 91 of this battery stack, joints are formed between the insulating ribs 93 of the separators arranged on both sides, and dew condensation water enters the joints. The creepage distance is shortened and cannot effectively prevent leakage

Method used

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Embodiment Construction

[0042] exist Figure 1 ~ Figure 3 A power supply device according to an embodiment of the present invention is shown in . The power supply device 100 in the above-mentioned figure includes: a plurality of battery cells 1 with a square shape; a separator 2 sandwiched between a plurality of battery cells 1 to insulate the battery cells 1; a battery stack 9, which A plurality of battery cells 1 insulated by separators 2 are stacked with main surfaces 1X facing each other; end plates 4 are arranged at both ends of the battery stack 9; end plate 4.

[0043] (battery unit 1)

[0044] The battery cell 1 is a lithium-ion secondary battery whose main surface 1X, which is a wide surface, has a quadrangular shape and is thinner than the width of the main surface 1X. However, in the power supply device of the present invention, the battery unit 1 is not specified as a lithium ion secondary battery. This is because all secondary batteries currently used and developed in the future, suc...

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Abstract

In order to increase the creepage distance of the bottom surface of the battery unit with an extremely simple structure and effectively prevent leakage caused by condensation water, etc., the power supply device includes: a plurality of battery units (1) with a square shape; arranged between the battery cells (1); end plates, which are a pair and arranged at both ends of the battery stack, the battery stack is formed by stacking a plurality of separators and a plurality of battery cells (1); and A tie bar for fastening a pair of end plates. Insulating ribs (21) protrude from both sides of the separator, and the insulating ribs (21) are arranged on the bottom surface of the battery cells (1) stacked on both sides of the separator and stacked on both sides of the battery cells (1). The insulating ribs (21) of the separator are stacked together on the bottom surface of the battery cell (1). The insulating rib is inserted into the insertion groove (22) of one insulating rib (21) among the stacked insulating ribs (21) by inserting the inserting rib (23) provided on the other insulating rib (21). The parts (21) are stacked together, so that the insulating ribs (21) having a creepage distance in a U-shaped bend are arranged on the bottom surface of the battery cell (1).

Description

technical field [0001] The invention relates to a power supply device in which a plurality of battery cells are laminated through separators. Background technique [0002] A power supply device including a plurality of battery cells is used in applications such as a power supply for driving a vehicle. Such a power supply unit includes a plurality of battery cells, a plurality of separators, a pair of tie bars, and a pair of end plates. Each separator is arranged between adjacent battery cells to arrange the adjacent battery cells in an insulated state. A battery stack is formed by alternately stacking a plurality of battery cells and a plurality of separators. End plates are arranged on both end surfaces of the battery stack in the stacking direction of the battery cells. The battery cells are fixed in a stacked state by connecting them with end plates disposed on both end surfaces. Since the positive and negative electrode plates and the electrolytic solution are sealed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/20H01M50/10H01M10/613H01M10/625H01M10/627H01M10/647H01M10/6557H01M10/6563H01M50/103H01M50/209
CPCH01M10/625H01M10/6563H01M10/647H01M10/6557H01M10/627H01M10/613Y02E60/10H01M50/209H01M50/249H01M50/264H01M50/291H01M50/293H01M2220/20H01M10/653H01M2220/10H01M50/251H01G11/10H01G11/12H01G11/08H01G11/82H01G11/78Y02T10/70H01M50/103H01M10/6554H01M50/24
Inventor 冈田涉阿部刚颂藤井雄佑长根健之小岛将
Owner SANYO ELECTRIC CO LTD
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