Battery Pack Lock Member and Lead Member Assembly for Uniform Resistance
Solution Overview
Problem
Battery packs face issues with electrical resistance and measurement errors due to non-uniform resistance in the electrical paths between battery cells and circuit units, caused by improper assembly of components.
Innovation Solution
A battery pack design that includes a lock member and a lead member with specific structural features, such as a stopper and groove portion, to form a signal transfer path with uniform resistance, preventing component movement and ensuring accurate assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are assembled without a locking mechanism, then assembly is simple, but components move and electrical resistance becomes non-uniform
Solution Approach 1:
The lock member is divided into distinct functional segments: a stopper portion that prevents over-assembly and a groove portion that provides lateral positioning. This segmentation allows each part to perform its specific function independently, ensuring uniform electrical resistance without requiring a monolithic complex locking structure.
Solution Approach 2:
The lock member acts as an intermediary component between the lead member and the battery cell terminal. It mediates the assembly process by providing both stopping and grooving functions, ensuring proper alignment and contact while maintaining simplicity in the overall assembly structure.
2Measurement precision
If components are tightly fixed to prevent movement, then measurement accuracy improves, but assembly difficulty increases
Solution Approach 1:
The stopper and groove portions are pre-formed on the lock member, establishing the correct position and contact pressure before the actual assembly is completed. This preliminary positioning action ensures that when the lead member is inserted, it automatically achieves the correct alignment and contact force, improving measurement accuracy without requiring complex adjustment procedures during assembly.
3Loss of energy
If electrical resistance is reduced between battery cells and circuit unit, then power efficiency improves, but component stability may be compromised
Solution Approach 1:
The lock member provides localized stability through the stopper and groove portions at critical contact points, while the overall electrical path maintains low resistance. The stopper ensures stable contact pressure where needed, and the groove provides positional stability, allowing the electrical connection to achieve both low resistance and component stability simultaneously.
Data Source
AI summary
Provided is a battery pack. The battery pack includes a battery cell, a circuit unit, a lock member, and a lead member, the lock member and the lead member being assembled with each other to form a signal transfer path between the battery cell and the circuit unit, wherein the lock member includes a stopper protruding upward in an up-down direction that is different from an assembling direction of the lead member, and a groove portion depressed downward, the stopper and the groove portion provided at different locations from each other along the assembling direction of the lead member, and the lead member includes an end portion contacting the stopper and a pressing portion contacting the groove portion. According to the present disclosure, the battery pack is capable of reducing electrical resistance between a plurality of battery cells and a circuit unit by improving a component assembling structure for forming an electrical path between the plurality of battery cells and the circuit unit, and forming uniform resistance with respect to a plurality of electrical paths and reducing a measuring error by preventing components from floating.