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Battery pack

A technology for battery packs and battery components, applied to battery pack components, lithium batteries, secondary batteries, etc., to achieve the effect of reducing temperature differences

Inactive Publication Date: 2006-12-06
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disclosure in this document does not suggest any technique for reducing temperature differences between individual battery elements in an assembled battery composed of a large number of battery elements

Method used

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Examples

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no. 1 example

[0028] A first embodiment of the present invention will be described below with reference to FIGS. 1-5 and 7 . Fig. 1 is an exploded perspective view of a battery pack formed of batteries used in portable wireless devices, automobiles, etc., where it is cut along one side of a case 2 of the battery pack, the cover 3 of which is lifted open.

[0029] A battery pack formed of batteries according to the present invention includes: an assembled battery 1 including a plurality of flat-shaped battery elements 10 stacked in the z-axis direction; a battery terminal 4a and a battery terminal 4b, which are respectively used to connect the positive electrode terminal 12a and the negative electrode terminal 12b of each battery element 10 of the assembled battery 1, and lead them out to the outside of the casing 2; the cover member 5, which fits inside the case 2 and pushes the uppermost battery element 10 of the battery 1 ; and the bottom member 6 which is provided at the bottom of the c...

no. 2 example

[0107] A second embodiment of the present invention will be described below with reference to FIG. 6 . In the battery pack according to the second embodiment, those components that are the same as those in the battery pack according to the first embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals, and descriptions thereof are omitted.

[0108] The difference between the second embodiment and the first embodiment is that, in the first embodiment, the shelf plates 1a, 1b, and 1c are formed as, except for the contact portion B, a shelf plate for placing the battery element 10 The parts have the same flat shape, whereas in the second embodiment, the part of each shelf plate for placing the battery element 10 is curved so as to have a curved structure.

[0109] Figure 6A is a top view of the battery pack when viewed from above except for the cover member 5, Figure 6B is along Figure 6A A cross-sectional view of the line VIB-VIB in, Figure 6C is along...

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PUM

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Abstract

A battery pack includes: a plurality of flat-shaped cells each including a generator element sealed by a laminate film; a case for accommodating the cells so as to be laminated in a thickness direction thereof, the case having an opening formed at least at one end thereof; a lid member fixed to the opening of the case and pressing the laminated cells in a laminating direction thereof; a bottom member provided between the case and the cell located at an end of the laminated cells on a side opposite to the opening of the case; a first tray provided between the cells and brought into contact with the case; a second tray provided between the lid member and the cells and brought into contact with the case; and a third tray provided between the bottom member and the cells and brought into contact with the case. The lid member and the bottom member are formed of a material having a thermal conductivity lower than a thermal conductivity of any one of the first tray, the second tray and the third tray.

Description

technical field [0001] The present invention relates to a battery pack formed of an assembled battery including a plurality of laminated battery elements covered with a sheet film. In particular, the present invention relates to a battery pack formed of assembled batteries capable of reducing temperature differences among battery elements in the battery pack. Background technique [0002] A conventional battery pack has one battery. Such battery packs have low capacity and their use is often limited to applications with relatively little vibration or shock. In recent years, lightweight, small-sized, high-capacity assembled batteries such as lithium batteries constituted by a plurality of battery elements have been developed for use in portable wireless devices, automobiles, and the like. [0003] In a large-capacity assembled battery (hereinafter simply referred to as a battery) such as a lithium battery, a plurality of thin flat-shaped battery elements are stacked to obta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M2/02H01M10/40H01M10/50H01M50/209H01M50/548H01M50/557
CPCY02E60/12H01M2/0212H01M10/052H01M2/1061Y02E60/10H01M50/557H01M50/209H01M50/548H01M50/20H01M50/10
Inventor 真田恭馆林义直涉谷信男小杉伸一郎
Owner KK TOSHIBA