Battery Module Bushing Buffer Locking Mechanism
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Solution Overview
Problem
Battery cartridges are prone to damage during locking due to direct contact with the locking member, and maintaining uniform intervals between cartridges or the cover is challenging when external forces are applied.
Innovation Solution
A battery module design featuring a bushing member that protrudes outside the cover, with a buffer member and protrusions on cartridges and the cover to prevent direct contact and maintain uniform spacing, ensuring the locking member contacts the buffer member and protrusions rather than the cartridges or cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking member directly contacts a cartridge for locking, then the locking function is achieved, but the cartridge may be damaged due to pressurization
Solution Approach 1:
A buffer member is introduced as an intermediary between the locking member and the cartridge. The buffer member receives the pressurization force from the locking member during locking operations, preventing direct contact between the locking member and the cartridge, thereby avoiding damage to the cartridge while maintaining the locking function.
Solution Approach 2:
The buffer member is pre-installed in the locking structure to provide cushioning protection before any damage can occur. It is designed to absorb and distribute the pressurization forces that occur during locking, preventing these forces from being transmitted to the cartridge.
2Reliability
If a locking member directly contacts a cover for locking, then the locking function is achieved, but the cartridge adhered to the cover may be damaged due to pressurization
Solution Approach 1:
The buffer member serves as a mediator between the locking member and the cover. When the locking member pressurizes the cover during locking, the buffer member intercepts this force, preventing it from being transmitted to the cartridge that is adhered to the cover, thereby protecting the cartridge from damage.
3Device complexity
If cartridges are stacked without spacing features, then the structure is simpler, but uniform intervals cannot be maintained when external forces are applied
Solution Approach 1:
Protrusions are pre-formed on the cartridges and corresponding recesses are pre-formed on the cover at predetermined positions. These features are built into the structure during manufacturing, so when external forces are applied, the cartridges automatically maintain uniform intervals through these pre-positioned protrusions and recesses without requiring complex adjustment mechanisms.
4Stability of the object's composition
If protrusions are added to maintain uniform intervals, then spacing stability is improved, but the device complexity increases
Solution Approach 1:
The protrusions on the cartridges and recesses on the cover are designed to work together as an integrated spacing system. The protrusions serve dual purposes: they maintain uniform intervals between cartridges and also guide the assembly during stacking. This merging of functions reduces the need for separate spacing mechanisms, thereby limiting the increase in overall device complexity.
Data Source
AI summary
Provided are a battery module and a battery pack including the same. The battery module includes: a cartridge assembly in which a plurality of cartridges, each accommodating a battery cell, are stacked on each other; a cover surrounding the cartridge assembly; a bushing member inserted through the cartridge assembly and the cover, and protruding to the outside of the cover by a pre-set interval; and a locking member inserted into the bushing member and locking the cover.