Bipolar secondary battery, battery asembly formed by connecting said batteries and vehicle mounting same

A secondary battery and bipolar technology, applied in the direction of secondary batteries, secondary battery manufacturing, battery components, etc., can solve the problem of reducing the performance of bipolar secondary batteries and increasing the internal resistance of bipolar secondary batteries , power reduction and other issues, to achieve the effect of suppressing weight, preventing resistance increase, and high power density
CN101425600AActive Publication Date: 2009-05-06NISSAN MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NISSAN MOTOR CO LTD
Publication Date
2009-05-06

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Abstract

Embodiments of a battery taught herein are directed to preventing a displacement between bipolar battery stacks or between a bipolar battery stack and an electrode tab. A bonding portion is formed at a part of a contact surface where a collector positioned at both ends in a stacking direction of a bipolar battery stack is bonded to the electrode tabs. The electrode tab and the collector are fixedby such a bonding portion. Further, the bonding portion is formed at a part of a contact surface where adjacent bipolar battery stacks are bonded to each other. Bipolar batteries positioned at upper and lower portions in the stacking direction are fixed by such a bonding portion.
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Description

technical field

[0001] The present invention relates to a bipolar secondary battery, a battery pack in which a plurality of bipolar secondary batteries are connected, and a vehicle equipped with these batteries. Background technique

[0002] In recent years, due to the upsurge in environmental protection, the reduction of carbon dioxide emissions has been concentrated in various industrial fields. In the automotive industry, the focus is on reducing carbon dioxide emissions, and the early adoption of hybrid electric vehicles (HEV), electric vehicles (EV), and fuel cell vehicles is expected. In order to spread these cars early, it is essential to develop high-performance secondary batteries. At present, among secondary batteries, attention is focused on stacked bipolar secondary batteries that can realize high energy density and high power density.

[0003] A typical bipolar secondary battery includes: a battery element in which a plurality of bipolar batteries are laminate...

Claims

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