Battery
A battery and current collector terminal technology, which is applied to secondary batteries, battery pack parts, battery covers/end covers, etc., can solve problems such as deterioration of sealing performance and insufficient sealing of fixed parts, and achieve excellent sealing performance
Inactive Publication Date: 2013-08-21
TOYOTA JIDOSHA KK
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] However, if the cycle of cooling and heating is repeated along with repeated use of the battery, the crimping and fastening portion will gradually return to the shape before the crimping and become loose, and the sealing performance will deteriorate, and the outer shell and the outside will be damaged. The sealing performance of the fixing part of the terminal becomes insufficient
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] refer to figure 1 , the schematic structure of the battery 10 which is one embodiment of the battery of the present invention will be described. The battery 10 of this embodiment is a lithium ion secondary battery.
[0030] The battery 10 includes: a power generating element 20; an exterior case 30 that accommodates the power generating element 20 inside; an external terminal 40·40 protruding outward from the exterior case 30; and an insulating member 50·50 provided between the external terminals 40·40 and Between 30 exteriors.
[0031] The power generation element 20 is a member that impregnates an electrode body in which a positive electrode, a negative electrode, and a separator are laminated or wound with an electrolytic solution. During charging and discharging of the battery 10 , a chemical reaction occurs in the power generating element 20 (strictly speaking, ion movement occurs between the positive electrode and the negative electrode through the electrolytic ...
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
Login to View More Abstract
The battery of the present invention is provided with: an outer cover having through holes; external terminals fixed in the through holes in the outer cover in a state with part thereof protruding to the outside of the outer cover; insulating members intervening between the outer cover and the external terminals; burring parts positioned at the peripheral edges of the through holes in the outer cover protruding toward the outside of the outer cover; and reinforcing members that are disposed at the outer periphery of the burring parts and reinforce the strength on the outer peripheral side of the burring parts. The battery is such that the external terminals are secured in the through holes by making the burring parts undergo plastic deformation by pressing and generating a compressive force between the external terminals and the through holes by the parts of the burring parts that have undergone plastic deformation. The external terminals are provided with a protrusion that is formed more to the outside of the outer cover than the location receiving the compressive force due to the pressing of the burring part and protrudes to the outside in the radial direction from the outer peripheral surface of the external terminal.
Description
technical field [0001] The present invention relates to a battery, and particularly relates to a technique for fixing an external terminal to an exterior. Background technique [0002] The exterior of the battery accommodates the power generation elements of the battery. External terminals (a positive terminal and a negative terminal) protruding outward through the exterior are fixed to the outer surface of the exterior. The external terminal is electrically connected to the power generation element, and the electric power inside and outside the battery is exchanged through the external terminal. [0003] When the battery is a non-aqueous electrolyte battery such as a lithium ion secondary battery, it is known that the performance of the battery is affected if moisture enters the battery. Therefore, it is necessary to make the airtightness of the battery sufficiently high. [0004] In addition, in the fixing part between the external terminal and the exterior, it is requi...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/06H01M2/30H01M50/147H01M50/176H01M50/188H01M50/55H01M50/553H01M50/564
CPCH01M10/0525H01M10/058Y02E60/10H01M50/147H01M50/564H01M50/55H01M50/553H01M50/176H01M50/188
Inventor 斋藤章纪
Owner TOYOTA JIDOSHA KK