Cover body for battery case

A technology of a battery box and a cover body is applied in the field of cover bodies for battery boxes, which can solve the problems of cracking of the safety valve 5 and achieve the effect of reliable cracking.

Active Publication Date: 2014-04-09
NISSHIN STEEL CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pressure inside the battery box 3 exceeds a predetermined value, the entire or most part of the annular thin-walled portion 50 is broken, thereby causing the safety valve 5 to crack.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cover body for battery case
  • Cover body for battery case
  • Cover body for battery case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] figure 1 It is a perspective view showing the cover body 1 for the battery box 3 according to Embodiment 1 of the present invention, figure 2 yes means figure 1 A top view of the cover body 1, image 3 is along figure 2 Cross-sectional view of line III-III. In addition, the same reference numerals are used for the conventional battery box cover (refer to Figure 8 as well as Figure 9 ) to describe the same or equivalent parts. figure 1 The shown cover body 1 and the bottomed cylindrical box main body 2 (refer to Figure 8 ) constitute together, for example, a battery case 3 for accommodating an electrolyte in a battery such as a lithium-ion battery (refer to Figure 8 ). The entire cover body 1 is made of a metal plate made of stainless steel.

[0028] The lid body 1 has a lid body body 4 , a safety valve 5 , and a pair of ribs 6 , 7 . Such as figure 2 As shown, the cover main body 4 is a substantially planar flat plate portion formed in a rectangular sha...

Embodiment approach 2

[0064] Figure 5 It is a top view showing the battery box cover body 1 according to Embodiment 2 of the present invention. In Embodiment 1, it was explained that the intersection point 6c of the two line segments 6b connecting the ends of the ribs 6 and 7 is arranged so as to coincide with the center position 50a of the annular thin-walled portion 50 (see figure 2 ), however, in Embodiment 2, the annular thin-walled portion 50 is arranged so that the intersection point 6c of the line segment 6b is received in the inner peripheral region of the annular thin-walled portion 50, and the central position 50a of the annular thin-walled portion 50 offset. In addition, the inner peripheral region of the annular thin-walled portion 50 refers to a region including not only the inner side of the annular thin-walled portion 50 but also the annular thin-walled portion 50 itself. Other structures are the same as those in Embodiment 1.

[0065] Next, the function will be described. In c...

Embodiment approach 3

[0070] Figure 6 It is a top view showing the battery box cover 1 according to Embodiment 3 of the present invention. In Embodiments 1 and 2, the ribs 6 and 7 are provided so as to be completely along the short-dimension direction 4a of the cover main body 4, but as long as the respective ribs 6 and 7 extend along the short-dimension direction 4a as a whole, Can also be formed into other shapes, for example, as Figure 6 As shown, the longitudinal direction of each rib 6 , 7 may be formed to be inclined with respect to the short direction 4 a of the cover main body 4 .

[0071] In this way, even if the ribs 6, 7 are not provided completely along the short dimension direction 4a of the cover main body 4, as long as the ribs 6, 7 extend along the short dimension direction 4a as a whole, each rib can be The portions 6 and 7 have rigidity against deformation of the lid main body 4 when the internal pressure of the tank increases. As a result, since the deformation of the periph...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

In a constitution wherein a ring shaped thin part (50) is formed integrally with a cover body main body (4) by a coining process, a pair of ribs (6, 7) formed integrally with the cover body main body (4) so as to jut out from the cover body main body (4) are disposed so as to extend along the short side direction (4a) of the cover body main body (4) and also be disposed on both sides of the ring shaped thin part (50) along the lengthwise direction (4b) of the cover body main body (4).

Description

technical field [0001] The present invention relates to a battery box cover composed of a metal plate constituting the battery box of a battery, and more particularly to a new improvement in which a pair of The rib, or the annular thin portion provided between the short side of the cover main body and the rib can avoid excessive concentration of stress on a part of the annular thin portion, thereby enabling the safety valve to more reliably rupture. Background technique [0002] As such a lid body for a battery box conventionally used, for example, the structure shown in patent document 1 etc. can be mentioned. Figure 8 It is an exploded perspective view showing a battery box using a conventional lid. In the figure, the cover 1 constitutes a battery case 3 together with a bottomed cylindrical case body 2 . The lid body 1 and the box main body 2 are made of metal plates such as aluminum, aluminum alloy, nickel-plated steel plate, or stainless steel. A cover main body 4 and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/12H01M50/159
CPCY02E60/12H01M2/1229H01M2/0426H01M10/0525H01M50/169H01M50/325H01M50/159Y02E60/10H01M50/15H01M50/3425H01M50/30H01M50/147H01M10/04H01M2200/20
Inventor 大塚雅人
Owner NISSHIN STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap