Battery Module Circuit Bypass for Failed Cell Isolation
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Solution Overview
Problem
When a battery unit fails in a battery module, the entire circuit fails, leading to maintenance challenges, resource wastage, and safety risks due to the need for replacing the entire module or group, which is inefficient and costly.
Innovation Solution
A battery module design that includes a conductive component and connecting plate to electrically isolate the failed battery unit, allowing it to be removed from the circuit, ensuring the module can continue functioning safely without replacing the entire module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire battery module is replaced when one battery unit fails, then the reliability of the battery module is restored, but the loss of substance and maintenance cost increase significantly
Solution Approach 1:
The battery module is divided into independent battery units, each with its own isolating structure. This allows individual units to be isolated and removed without affecting the entire module, enabling selective replacement rather than full module replacement.
Solution Approach 2:
The failed battery unit is extracted from the circuit using the isolating structure. The isolating structure includes disconnecting components that can be opened to electrically isolate the failed unit, allowing it to be removed while the remaining units continue to function.
2Reliability
If the entire battery module is replaced when one battery unit fails, then the battery module can resume working, but the maintenance time and productivity are reduced
Solution Approach 1:
The battery module is segmented into replaceable battery units with dedicated isolating structures. This enables rapid isolation and removal of only the failed unit rather than the entire module, significantly reducing maintenance time.
Solution Approach 2:
The isolating structure is pre-configured with disconnecting components that can be quickly activated. This preliminary arrangement allows for rapid isolation of the failed battery unit without requiring complex disassembly procedures.
3Device complexity
If the failed battery unit remains in the circuit, then the device complexity is reduced, but the safety of the battery module deteriorates
Solution Approach 1:
The isolating structure actively extracts or isolates the failed battery unit from the circuit using disconnecting components. This removes the harmful influence of the failed unit while maintaining a relatively simple overall structure.
Solution Approach 2:
The isolating structure acts as an intermediary between the failed battery unit and the rest of the circuit. It provides electrical isolation through disconnecting components, preventing the failed unit from affecting other units while maintaining circuit integrity.
Data Source
AI summary
The embodiment of the present application provides a battery module, a battery group, a power consumption device, and a failure handling method. The battery module includes: a plurality of battery units, each of the plurality of battery units including a top cover, where the plurality of battery units includes a failed battery unit after the battery module fails; a connecting plate for connecting the plurality of battery units in series, where the connecting plate includes a first connecting plate connected to the failed battery unit; and a conductive component for electrically connected to the top cover of the failed battery unit, where at least one of the connecting plate and the conductive component is provided with a mating portion for being mated with the other of the connecting plate and the conductive component, so that the battery module resumes working.