Spring Bus Bar Battery Housing for Fewer Cell Connection Parts
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Solution Overview
Problem
Existing battery module configurations require a large number of parts for connecting cell terminals to a bus bar, which increases complexity and potentially reduces efficiency.
Innovation Solution
A battery housing body design that integrates a first connection bus bar with springs connected to cell terminals, reducing the number of parts by using a single bus bar to connect multiple battery cells directly, and a wiring module that integrates bus bars and signal wires to minimize components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cell terminals are connected by a bus bar with multiple separate components, then reliable electrical connection is achieved, but the number of parts increases
Solution Approach 1:
The patent combines multiple separate components (bus bar body, multiple springs, and terminal connectors) into an integrated bus bar assembly where springs are pre-attached to the bus bar body. This merging reduces the number of parts that need to be assembled while maintaining reliable electrical connection between cell terminals through the spring-loaded contact mechanism.
Solution Approach 2:
The bus bar assembly is designed as a universal component that can connect multiple cell terminals simultaneously. The plurality of springs are attached to the bus bar body to engage with corresponding cell terminals, allowing a single bus bar component to perform multiple connection functions rather than requiring separate connectors for each terminal.
2Reliability
If multiple separate components are used for connecting cell terminals, then connection reliability is improved, but ease of manufacture decreases
Solution Approach 1:
The bus bar body and plurality of springs are integrated into a single assembly unit. This merging allows the connection components to be manufactured and pre-assembled together, reducing the number of separate assembly steps required during battery module production and improving ease of manufacture while maintaining connection reliability.
3Device complexity
If a single bus bar connects multiple battery cells, then the number of parts is reduced, but attachment and disassembly ease may be affected
Solution Approach 1:
The bus bar assembly incorporates springs that provide elastic deformation capability. These springs enable the bus bar to dynamically adapt to slight misalignments between cell terminals during attachment, and to facilitate easy disassembly through controlled deformation. The spring mechanism allows the single bus bar to maintain reliable connection while preserving ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces the number of parts, enhances attachment and disassembly ease, improves workability, and facilitates recycling by minimizing the number of components required for connecting battery cells.
Implementation Method 1
a first spring continuously connected to the first extending portion on a first side in the extending direction of the first extending portion, and a second spring continuously connected to the first extending portion on a second side in the extending direction of the first extending portion
Data Source
AI summary
A battery housing body includes a casing capable of housing a plurality of battery cells, with a pair of cell terminals facing a mounting surface, and a first connection bus bar including a first extending portion, a first spring continuously connected at a first side of the first extending portion, and a second spring continuously connected at a second side of the first extending portion. The plurality of battery cells includes a first battery cell and a second battery cell, the first spring is connectable to a cell terminal on a first side in a separating direction out of a pair of cell terminals of the first battery cell, and the second spring is connectable to a cell terminal on a first side in the separating direction out of a pair of cell terminals of the second battery cell.