Battery Box Isolation Component With Avoidance Opening
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Solution Overview
Problem
Existing battery technologies face challenges in ensuring safety due to potential blockages of pressure relief mechanisms, leading to incomplete pressure relief and increased risk of battery explosion, particularly when assembly tolerances exceed allowable ranges.
Innovation Solution
A battery design featuring a box with an electrical chamber, a collection chamber, and an isolation component where the pressure relief mechanisms of battery cells face avoidance openings extending along a direction, allowing emissions to be discharged into the collection chamber rather than the electrical chamber, thereby preventing short-circuits and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each pressure relief mechanism is in one-to-one correspondence with each avoidance opening, then the pressure relief mechanism can be precisely aligned, but the assembly requirements become extremely high and cumulative tolerance exceeds allowable range causing blockage
Solution Approach 1:
Multiple avoidance openings are merged into a single collective avoidance opening that serves all pressure relief mechanisms. This merging approach eliminates the need for precise one-to-one alignment between each pressure relief mechanism and its corresponding avoidance opening, thereby reducing cumulative tolerance issues while ensuring reliable pressure relief functionality for all battery cells.
2Object-affected harmful factors
If the isolation component completely blocks the pressure relief mechanism, then the electrical chamber is protected, but the pressure relief mechanism cannot discharge emissions smoothly leading to explosion risk
Solution Approach 1:
The isolation component acts as an intermediary structure that provides a collective avoidance opening, allowing emissions to pass through to the collection chamber while still providing isolation functionality. This mediator approach balances the conflicting requirements of protecting the electrical chamber from harmful emissions and enabling smooth discharge of pressure relief mechanisms.
3Productivity
If the pressure relief mechanism discharges emissions into the electrical chamber, then the discharge path is short, but the electrical connection component becomes conductive and short-circuited
Solution Approach 1:
The battery box is segmented into distinct functional zones: the electrical chamber for housing battery cells and electrical connections, and the collection chamber for receiving emissions. The isolation component with its collective avoidance opening creates a controlled interface between these zones, directing emissions into the collection chamber rather than allowing them to contaminate the electrical chamber, thereby preventing short-circuits while maintaining efficient pressure relief.
Data Source
AI summary
An embodiment of the present application is provided with a battery box, a battery, a power consumption device, and a method for producing a battery and an apparatus for producing a battery. The box of the battery includes: an electrical chamber, configured to accommodate a battery cell group; a collection chamber, configured to collect emissions of the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated; an isolation component for isolating the electrical chamber and the collection chamber, such that the electrical chamber and the collection chamber are arranged on both sides of the isolation component; wherein a surface of the isolation component that is close to the battery cell group is provided with an avoidance opening, the avoidance opening extends along the first direction, and the plurality of pressure relief mechanisms of the battery cell group face the avoidance opening.