Battery Pack Guide Protrusions for Accurate Assembly
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Solution Overview
Problem
Existing battery packs face challenges in accurately assembling cell assemblies within pack housings due to limited space, leading to potential damage during assembly and reduced rigidity, which can result in damage from external impacts or vibrations.
Innovation Solution
The battery pack design incorporates vertically extending outer protrusions on the cell assembly and inner protrusions on the pack housing that can be slid and coupled, providing guiding functionality and increased rigidity, ensuring accurate positioning and protection against external factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cell assembly is accommodated in the pack housing with limited space, then the battery pack size is reduced, but the assembly accuracy deteriorates and damage risk increases
Solution Approach 1:
Guide protrusions and guide grooves are introduced as intermediary guiding structures between the cell assembly and pack housing. These guiding structures enable accurate positioning and stable assembly even in limited space, preventing damage while maintaining compact dimensions.
2Strength
If the pack housing is made with sufficient rigidity to protect components, then the protection capability is improved, but the assembly difficulty increases due to space constraints
Solution Approach 1:
Guide protrusions and guide grooves serve as intermediary structures that facilitate assembly between the rigid pack housing and cell assembly. These guiding features enable precise positioning and stable coupling without compromising the rigidity or protective capability of the pack housing.
3Volume of moving object
If the space between pack housing and cell assembly is minimized, then the battery pack volume is reduced, but the positioning accuracy deteriorates
Solution Approach 1:
Guide protrusions and guide grooves are introduced as intermediary guiding structures that enable accurate positioning between the cell assembly and pack housing even when the space between them is minimized. These structures provide precise alignment without requiring excessive clearance.
4Manufacturing precision
If the cell assembly is moved to correct location after erroneous placement, then the positioning accuracy is improved, but the damage risk increases
Solution Approach 1:
Guide protrusions and guide grooves are designed to provide preliminary guiding action during the assembly process. This preliminary guidance ensures correct positioning from the beginning, preventing erroneous placement and eliminating the need for subsequent movement that could cause damage.
Data Source
AI summary
A battery pack, including a cell assembly including a plurality of secondary batteries and having outer protrusions formed at an outer side surface thereof to extend vertically and a pack housing configured to have an inner space in which the cell assembly is accommodated, the pack housing having inner protrusions formed at an inner side surface thereof to extend vertically, wherein the cell assembly has ducts provided at both side surfaces thereof so that fluid flows into or out of a secondary battery, and the outer protrusions are formed at outer side surfaces of the ducts.