Battery Module Sensing Assembly Bolt Fastening
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Solution Overview
Problem
Conventional battery modules have unstable fastening structures for sensing units, leading to weak durability against impact and vibration, which is critical for middle- or large-sized modules used in vehicles.
Innovation Solution
A battery module design featuring a sensing assembly with bolt-assembling fingers and assembling plates that securely couple the sensing assembly to the cell cartridge assembly, providing enhanced structural and electrical stability through a plate-shaped structure and bolt-through holes for improved assembly and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hook fastening method is used to attach the sensing unit to the cell cartridge assembly, then assembly convenience is improved, but the stability and durability against impact and vibration deteriorate due to clearance and unstable fixed state
Solution Approach 1:
The patent replaces the hook fastening method with a bolt fastening system. The bolt inserting unit allows bolts to be inserted through assembling plates into guide holes of the stacking cartridges, creating a rigid mechanical connection that eliminates clearance and provides stable fastening against impact and vibration, while still maintaining ease of assembly through the guide hole alignment mechanism
Solution Approach 2:
The patent introduces assembling plates as intermediary components between the sensing assembly and the stacking cartridges. These plates provide mounting surfaces for bolts and include guide holes that align with the stacking cartridges, serving as a mediator that enables stable bolt fastening while simplifying the assembly process through automatic alignment
2Ease of operation
If the sensing unit is loosely fastened to allow easy assembly, then assembly convenience is improved, but manufacturing precision and structural integrity deteriorate due to clearance in the fastening portion
Solution Approach 1:
The patent replaces the hook fastening method with a bolt fastening system. The bolt inserting unit allows bolts to be inserted through assembling plates into guide holes of the stacking cartridges, creating a rigid mechanical connection that eliminates clearance and provides stable fastening against impact and vibration, while still maintaining ease of assembly through the guide hole alignment mechanism
Solution Approach 2:
The bolt-assembling finger protrudes beyond other corner areas of the stacking cartridge, creating an asymmetric structure that provides a dedicated location for bolt fastening. This asymmetric design ensures precise positioning of the sensing assembly relative to the cell cartridge assembly, eliminating clearance while maintaining assembly convenience through the protruding guide structure
Data Source
AI summary
A battery module according to an embodiment of the present disclosure includes a cell cartridge assembly including at least one battery cell and a plurality of stacking cartridges configured to respectively accommodate the at least one battery cell and arranged in layers in a height direction; and a sensing assembly mounted on at least one side of the cell cartridge assembly and configured to sense electrical characteristics of the at least one battery cell. Each of the stacking cartridges includes a bolt-assembling finger protruding from at least one corner area beyond other corner areas, and the bolt-assembling finger includes an assembly guide unit provided in a slot form. The sensing assembly includes a sensing assembly body provided in the form of a plate-shaped structure and having a plurality of sensing members mounted thereon, and an assembling plate integrally formed with the sensing assembly body and capable of being inserted into the assembly guide unit of the bolt-assembling finger.