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Electricity storage module

A technology of power storage modules and power storage devices, which is applied to battery components, circuits, electrical components, etc., can solve problems such as shortened life, increased battery unit load, and inability to charge and discharge, so as to achieve good efficiency and increase The effect of contact area

Pending Publication Date: 2021-08-06
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this power supply unit is used outdoors, it is easily affected by ambient temperature
In particular, since each secondary battery uses chemical changes as a power generating element, there are problems such as charging and discharging cannot be performed when the temperature is low, or the load on the battery cell is increased and the life is shortened.

Method used

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  • Electricity storage module
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0024] figure 1 is a cross-sectional view schematically showing the structure of the power storage device 10 used in the power storage module 100 in the first embodiment of the present disclosure.

[0025] The power storage device 10 can adopt, for example, figure 1 The cylindrical lithium ion secondary battery shown. It should be noted that the power storage device of the present disclosure may be a secondary battery such as a nickel-metal hydride battery or a capacitor. Below, refer to figure 1 , the specific structure of the power storage device 10 will be described.

[0026] Such as figure 1 As shown, the electrode group 4 obtained by winding the positive electrode 2 and the negative electrode 1 with the separator 3 interposed therebetween is housed in a cylindrical case 7 made of metal together with a non-aqueous electrolytic solution. Insulating plates 9, 110 are respectively arranged above and below the electrode group 4, the positive electrode 2 is connected to th...

no. 2 approach

[0054] The power storage module 200 of the second embodiment differs from the power storage module 100 of the first embodiment only in the arrangement of the heating element 30 relative to the power storage device 10 , so only the differences from the first embodiment will be described below. , the description of the same parts as those in the first embodiment will be omitted.

[0055] Figure 6 It is obtained by taking out a part of the inside of the power storage module 200 according to the embodiment (a part of the plurality of power storage devices 10 and a part of the heating element 30 ), and viewing it from above along the central axis of the power storage device 10 picture. Figure 7 will be Figure 6 The figure is shown after a part is taken out.

[0056] In the power storage module 200, the heating element 30 is not in contact with the first power storage device 10a, but is in contact with another power storage device 10d adjacent to the second power storage device ...

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Abstract

An electricity storage module according to this disclosure is provided with: a plurality of cylindrical electricity storage devices; and a sheet-like heating body which heats the plurality of electricity storage devices. The plurality of electricity storage devices have cylindrical cases, respectively; the plurality of electricity storage devices are arranged such that the central axes of these cases are parallel to each other; the heating body has a plurality of contact parts which are continuously in contact with the lateral circumferential surfaces of the plurality of electricity storage devices; and the wrap angles of the plurality of contact parts relative to the electricity storage devices are greater than 180 degrees.

Description

technical field [0001] The present disclosure relates to an electric storage module. Background technique [0002] An example of a power storage module is a battery pack in which a plurality of secondary batteries are connected in series and / or in parallel, and is used as a power source for electric motorcycles or assist bicycles, or a power supply device for electric vehicles. Since this power supply device is used outdoors, it is easily affected by the ambient temperature. In particular, since each secondary battery uses a chemical change as a power generating element, there are problems such as charging and discharging cannot be performed when the temperature is low, or the load on the battery cell is increased and the life is shortened. In order to prevent the above problems from occurring, it is necessary to heat the battery cells. For example, for a battery pack used in winter when the temperature is low or in a cold region, it is conceivable to preheat a plurality o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/643H01M10/65H01M10/653H01M10/6555H01M10/6571H01M10/658H01M50/20H01M50/213H01M50/24H01M50/249
CPCH01M10/6571H01M10/643H01M10/6555H01M10/653H01M10/658H01M10/615Y02E60/10H01M50/213H01M50/249H01M50/24
Inventor 泽田耕一荻野洋岳解朶朶
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD