Battery Sampling Circuit Board With Repairable Fuse Branches
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Solution Overview
Problem
In battery modules, the fusing of the fusing zone in the sampling circuit of the FPC leads to failed sampling, resulting in the scrapping of the entire FPC or battery module.
Innovation Solution
A circuit board with a simple structure featuring multiple branch paths and pads, allowing for quick repair and reuse by reconnecting the sampling end and outputting end portions via a second branch path and pad, thereby preventing the entire battery module from being scrapped.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fusing zone is provided in the sampling circuit to ensure safety and reliability, then the reliability of the sampling circuit is improved, but the complexity of the circuit structure increases and the cost of replacement increases
Solution Approach 1:
The sampling circuit is segmented into multiple independent branch paths (first branch path with first fusing zone, second branch path with second fusing zone). When one branch fails due to fusing, the other branch remains functional, allowing the circuit to continue operating. This segmentation reduces the impact of failures and eliminates the need to replace the entire circuit board.
Solution Approach 2:
Redundant branch paths are built into the circuit design in advance as a cushion against failure. The second branch path serves as a backup that can take over when the first branch path fails, providing beforehand protection against complete circuit failure and reducing replacement costs.
2Reliability
If the entire battery module is scrapped when the sampling circuit fails, then the reliability of the battery module is ensured, but the loss of substance increases and the utilization of the battery module decreases
Solution Approach 1:
The battery module's sampling system is segmented into multiple independent branch paths. When one branch fails, only that specific branch needs repair or replacement, not the entire battery module. This allows the majority of the battery module to be preserved and continued used.
Solution Approach 2:
Instead of discarding the entire battery module when a sampling circuit failure occurs, the failed branch is isolated and recovered. The functional branches are preserved and continued used, maximizing the utilization of the battery module and reducing waste.
3Device complexity
If a single branch path is used in the sampling circuit, then the device complexity is reduced, but the ease of repair worsens and the productivity decreases
Solution Approach 1:
The sampling circuit is divided into multiple segmentable branch paths with distinct fusing zones. When a failure occurs, the specific failed segment can be quickly identified and repaired without affecting other segments, significantly improving ease of repair and reducing downtime.
Solution Approach 2:
Multiple branch paths are pre-configured in the circuit design, with each path having its own protective fusing zone. This preliminary preparation ensures that when a failure occurs, repair can immediately begin on the failed branch while other branches continue to function, improving repair efficiency.
Data Source
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AI summary
The present invention provides a circuit board, which comprises a conductive layer, a first pad and a second pad. The conductive layer is formed with a sampling circuit, the sampling circuit comprises: a sampling end portion; an outputting end portion; a first branch path formed with a first fusing zone; and a second branch path formed with a second fusing zone. The first pad is provided on the sampling end portion, the second pad is provided on the second branch path. When the first fusing zone is fused, the circuit board can be quickly repaired by means of the second branch path and the second pad to electrically connect the sampling end portion and the outputting end portion, thereby achieving the purpose of reusing the circuit board, therefore the entire battery module is not scrapped and the utilization of the battery module is improved.