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battery module

A battery module and battery technology, applied in the direction of batteries, battery pack parts, circuits, etc., can solve the problems of complex bracket structure and high manufacturing cost of battery modules, and achieve the effect of simple structure and reliable positioning

Active Publication Date: 2018-03-02
TOYODA GOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the battery modules disclosed in Japanese Patent Laid-Open No. 2014-2850 and Japanese Patent Laid-Open No. 2009-272160, the structure of the bracket is complicated, and the manufacturing cost of the battery module is relatively high.

Method used

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no. 1 Embodiment approach

[0038] A battery module according to an embodiment of the present invention will be described with reference to the drawings. like figure 1 , figure 2 As shown, the battery module 10 has a battery pack 11 , a bracket 12 , a case 3 , an upper bus bar 4 , a separator 5 , and a lower bus bar 6 .

[0039] like figure 1 , figure 2 As shown, the battery pack 11 is composed of a plurality of batteries 1 . The plurality of batteries 1 are aligned in the longitudinal direction and arranged side by side with each other. In the present embodiment, the battery pack 11 is composed of 16 batteries 1 . Each battery 1 in the battery pack 11 is a substantially identical cylindrical battery cell with a diameter of 18 mm and a length of 65 mm, and has terminals 18 (positive terminal 18 and negative terminal 18 ) on both ends 19 in the axial direction.

[0040] like image 3 As shown, the holder 2 is made of metal and has holding holes 21 corresponding to the number of batteries 1 . The...

no. 2 Embodiment approach

[0063] In the second embodiment, if Figure 9 , Figure 10 As shown, the rib portion 7 formed on the bottom wall 30 of the housing 3 is a rib portion having a partially discontinuous portion in the circumferential direction of the hole portion 31, and at this point is continuous in the circumferential direction in an annular shape. The first embodiment of the ridge portion is different.

[0064] A plurality of ribs 7 of the second embodiment are arranged along the circumferential direction of the hole 31 at the peripheral edge of the hole 31 . Predetermined gaps 8 are formed between the protrusions 7 . A guide portion 71 is formed on an inner surface 7 a extending obliquely downward from the top 70 of each rib portion 7 toward the hole portion 31 to the base portion 72 . The peripheral edge of the hole portion 31 has a support surface 35 for holding the end portion 19 of the battery 1 .

[0065] Similarly to the rib portion 7 of the first embodiment, the rib portion 7 of t...

no. 3 Embodiment approach

[0067] In the third embodiment, if Figure 11 As shown, it is different from the first embodiment in which the ring-shaped rib portion 7 is formed in the following point, that is, on the bottom wall 30 of the housing 3 , there are formed ribs arranged along the circumferential direction at the periphery of the hole portion 31 . A plurality of protrusions 75 .

[0068] The side surface of the boss portion 75 on the hole portion 31 side is the guide portion 71 . The guide portion 71 is a tapered surface inclined radially inward toward the insertion direction of the battery.

[0069] The convex portion 75 can have various shapes such as cone, triangular pyramid, quadrangular pyramid, polygonal pyramid such as conical frustum, quadrangular pyramid, pentagonal pyramid, and convex portion with curved surface such as hemispherical surface or elliptical hemispherical surface. The shape of the protrusion part 75 in 3rd Embodiment is a conical shape.

[0070] A plurality of conical p...

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Abstract

The battery module of the present invention has: a battery pack composed of a plurality of cylindrical batteries; a bracket holding the battery pack so that the batteries are restrained parallel to each other; In the battery module, the housing has an opposing wall portion opposite to the holder, the opposing wall portion has: a hole portion holding the battery by the peripheral edge or an inner peripheral surface; and a guide portion formed in the hole portion When the battery is inserted into the storage space, the battery is guided in such a way that the battery is close to the center of the hole and the central axis of the battery passes through the center of the hole.

Description

technical field [0001] The invention relates to a battery module. Background technique [0002] In an electric vehicle that travels with the driving force of an electric motor, or a hybrid vehicle that travels with the driving force of both an internal combustion engine and an electric motor, a battery module in which a plurality of batteries are arranged is mounted as a power supply device. The battery module is housed in the case with a plurality of batteries held by the holder. Inside the case, there is formed a space through which air can circulate in order to cool the battery. The batteries are vertically arranged in the space inside the case while being fitted and inserted into holding holes formed in the holder. The gaps between the cells were kept constant, and the cells were cooled by passing air through the gaps. [0003] In order to manufacture battery modules inexpensively, it is desirable to simultaneously place and position a plurality of batteries in the sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/10H01M50/213H01M50/227
CPCH01M50/227H01M50/213H01M2220/20Y02E60/10
Inventor 中村祥宜草场幸助
Owner TOYODA GOSEI CO LTD