Power storage module

Abstract

Provided is a power storage module in which life-shortening damage to the module is prevented by restricting increases in the temperature of the module due to the generation of heat, the characteristics of the module are maximized by homogenizing the cell temperature, and a level of insulation compliant with the required safety specifications can be achieved. The power storage module (11) of the present invention is provided with a case (21), a plurality of stack plates (41), a heat-transferring metal plate (51), and a heat-radiating fin (61). The case (21) has an exposure opening (23) in the side of the case (22), and houses a plurality of storage cells (31). The stack plates (41), which have an opening (42), are interposed between the plurality of storage cells (31), and the position of each of the stack plates is determined by the engagement with the adjacent stack plates. The heat transferring metal plate (51) has a flat section (52) and a bent section (53), and is arranged so as to be in close contact with the principle surface (33) of the power storage cell (31). The heat radiating fin (61) protrudes from the exposure opening (23) to the exterior of the case (21), and is thermally coupled to the bent section (53) of the heat transferring metal plate (51) at surface contact state via a heat transferring insulation sheet (65).

Description

technical field [0001] The present invention relates to an electricity storage module including a plurality of storage batteries having a structure in which power generation elements are housed inside a metal laminated film material together with an electrolyte, and particularly relates to the above-mentioned electricity storage module characterized by a heat dissipation structure and an insulation structure. module. Background technique [0002] In power storage systems such as load leveling devices such as solar power generation or wind power generation, instantaneous voltage drop countermeasures for electronic equipment represented by computers, and energy regeneration devices for electric vehicles or hybrid vehicles, large energy capacity and A power storage device capable of rapid charging and discharging. Conventional lead storage batteries and other secondary batteries are weak in charging and discharging of large currents and have a short cycle life, so it is diffic...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned conventional structure, there is conduction between the single battery and the metal case, or between a good heat-conducting plate in contact with the single battery and the metal case, so that it cannot meet the requirements. Insulation issues corresponding to safety standards

[0010] In addition, in order to avoid this problem, for example, it is conceivable to insulate the unit cells individually by covering them with an insulating sheet or the like. However, in order to take this countermeasure, the manufacturing cost of the unit cells is high, resulting in an increase in the cost of the entire module.

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