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Battery

A technology for batteries and battery casings, applied in battery pack components, battery covers/end caps, battery boxes/jackets, etc., can solve problems such as inability to properly grasp the state of the sealing material, grasp the state of the sealing material, and insufficient pressing

Active Publication Date: 2016-08-17
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the state of the sealing material sandwiched between the engaging flange of the blind rivet and the outer surface around the liquid injection hole cannot be properly grasped from the outside (side direction) of the battery case.
Moreover, even if the cover of the battery case is flat, when the opening of the case main body is sealed with the cover by welding or the like, since the junction between the case main body and the cover has a height, it is difficult to remove the battery from the battery. The outside of the housing (side direction) properly grasps the state of the sealing material
Therefore, even if the pressing of the blind rivet is insufficient or excessive, there is a problem that it cannot be judged from the outside of the battery case.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 A longitudinal sectional view of a lithium ion secondary battery (sealed battery) 1 (hereinafter simply referred to as battery 1 ) according to Embodiment 1 is shown in . and, figure 2 is shown from the center of the axis AX of the through hole 12H from figure 1 A vertical cross-sectional view of the sealing structure of the through-hole 12H viewed from a direction rotated by 90°. also, image 3 The detail of the sealing structure of the through-hole 12H by the deformed blind rivet 60 is shown in . Also, in this manual, the figure 1 , figure 2 as well as image 3 The upper side of the battery 1 will be described as the upper side UW of the battery 1, and the lower side will be described as the lower side DW of the battery 1. and, in figure 2 Among the axial directions along the axis AX of the through-hole 12H, when the direction from the inner side tow...

Embodiment approach 2

[0060] Next, a second embodiment will be described. A hybrid vehicle (vehicle) 700 (hereinafter simply referred to as an automobile 700 ) according to the second embodiment is equipped with the battery 1 according to the first embodiment, and the electric energy stored in the battery 1 is used as all or part of the driving energy of the driving source. to use (see Figure 8 ).

[0061] This automobile 700 is a hybrid automobile equipped with a battery pack 710 in which a plurality of batteries 1 are combined, and driven by an engine 740 , a front motor 720 , and a rear motor 730 . Specifically, the automobile 700 includes an engine 740 , a front motor 720 and a rear motor 730 , a battery pack 710 (battery 1 ), cables 750 , and an inverter 760 on a body 790 thereof. Furthermore, this automobile 700 is configured to be able to drive the front motor 720 and the rear motor 730 using electric energy stored in the battery pack 710 (battery 1 ).

[0062] As described above, in the...

Embodiment approach 3

[0064] Next, a third embodiment will be described. The hammer drill 800 of the third embodiment is a battery-operated device equipped with the battery 1 according to the first embodiment (refer to Figure 9). In this hammer drill 800 , a battery pack 810 (battery 1 ) including a battery 1 is housed in a bottom 821 of a main body 820 , and the battery pack 810 is used as an energy source for driving the drill.

[0065] As described above, the battery 1 can measure the thickness of the gasket 70 to confirm that the airtightness is good, so the reliability of the hammer drill 800 mounted with the battery 1 can be improved.

[0066] As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to above-mentioned Embodiment 1-3, Of course, it can change suitably and apply in the range which does not deviate from the summary.

[0067] For example, in Embodiment 1, an example was shown in which the through hole 12H is used as a liqu...

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Abstract

The invention provides batteries. The battery (1) has: a battery case (10), the battery case (10) is composed of a case body part (11) and a case cover part (12) having a through hole (12H); ) snapped rivet (60); and a gasket (70), which is sandwiched between the peripheral outer surface (13c) of the housing cover member (12) and the outer flange portion (52) of the rivet (60). A pad (70) airtightly seals the through hole (12H). The housing cover member (12) has a form in which the peripheral outer surface (13c) is located in a state where the peripheral portion (12r) of itself is joined to the opening edge portion (11f) of the housing main body member (11). The peripheral edge portion ( 12 r ) and the opening edge portion ( 11 f ) are positioned in an axially outward direction (HO) facing outward along the axis line (AX) of the through hole ( 12H ).

Description

technical field [0001] The present invention relates to a battery including a battery case having a through hole, and the through hole of the battery case is hermetically sealed using a rivet and a gasket. Background technique [0002] Conventionally, a battery is known which includes a battery case provided with a through hole such as a liquid injection hole for injecting an electrolytic solution, and the through hole of the battery case is hermetically sealed. Furthermore, batteries using various structures have been proposed as the sealing structure for sealing the through hole. For example, Patent Document 1 discloses a sealed battery in which a sealing material is interposed between an engaging flange of a sealing member and the outer surface around the liquid injection hole (through hole), and a blind rivet is used as the sealing member. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-229118 [0004] However, in the sealed battery described in Patent D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/04H01M2/06H01M2/08H01M50/147H01M50/169H01M50/184H01M50/186H01M50/191H01M50/645
CPCH01M50/691H01M50/186H01M50/191H01M50/147H01M50/169H01M50/184H01M50/645Y02E60/10
Inventor 原山贵司草间和幸中山博之
Owner TOYOTA JIDOSHA KK