Battery Cell Contact Support Opening for FFC Bend Protection
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Solution Overview
Problem
The flexible flat cable (FFC) used in cells contact systems is prone to breaking due to external forces, which affects battery life as it needs to be bent to connect to busbars and is squeezed by the battery's upper cover and support.
Innovation Solution
A cells contact system with a support featuring an opening corresponding to the bent portion of the acquisition line, providing a buffer space to reduce the risk of breakage when subjected to external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the acquisition line is bent to connect to the busbar, then the electrical connection is achieved, but the bent portion is at high risk of breaking when squeezed by external force
Solution Approach 1:
The support structure incorporates pre-designed openings and recesses at the bent portion location of the acquisition line. These structural features provide beforehand cushioning space that absorbs external squeezing forces before they can damage the bent portion, preventing breakage while maintaining the necessary electrical connection
2Reliability
If the acquisition line is bent to connect to the busbar, then the electrical connection is achieved, but the service life of the acquisition line is reduced
Solution Approach 1:
The support structure incorporates pre-designed openings and recesses at the bent portion location of the acquisition line. These structural features provide beforehand cushioning space that absorbs external squeezing forces before they can damage the bent portion, preventing breakage while maintaining the necessary electrical connection
Data Source
AI summary
The present disclosure provides a cells contact system (CCS), a battery, and an electric vehicle. The CCS includes: a support; one or more busbars arranged on the support, where the busbars are configured to be connected to cells; and an acquisition line arranged on the support and electrically connected to the busbars. The acquisition line has a bent portion, and the support is provided with an opening corresponding to the bent portion.