Battery End-Plate Connection Structure for Low-Resistance Pack Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for connecting multiple batteries together result in increased internal resistance due to small contact areas between metal connecting posts and sleeves, leading to low charge-discharge efficiency and affected performance of battery packs.
Innovation Solution
A battery design featuring a connecting sleeve with a contour edge on one electrode end plate and a matching countersink on the other, allowing for increased contact area and reduced internal resistance when adjacent batteries are connected, along with threaded connections for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal connecting post and metal connecting sleeve are used for battery interconnection, then mechanical connection is achieved, but contact area is small resulting in increased resistance
Solution Approach 1:
The invention transitions from point-contact connection to surface-contact connection by designing the connecting sleeve with an electrical contact surface that contacts the electrode end plate over an extended area. The contour edge extending along the length direction creates a mounting countersink that enables broad surface contact, fundamentally changing the dimensional nature of the electrical connection interface.
Solution Approach 2:
The connecting sleeve serves multiple functions simultaneously: it provides mechanical connection between batteries, establishes electrical connection through the electrical contact surface, and creates a mounting structure via the contour edge and countersink. This multi-functional design eliminates the need for separate mechanical and electrical connection components.
2Productivity
If small contact area connection is used, then device complexity is reduced, but charge-discharge efficiency decreases
Solution Approach 1:
The invention merges the mechanical connection function and electrical connection function into a single integrated connecting sleeve structure. The contour edge, mounting countersink, and electrical contact surface work together as one unified component, achieving both mechanical stability and low-resistance electrical connection without requiring additional separate components.
Data Source
AI summary
A battery is disclosed including: a battery body, where a first electrode end plate and a second electrode end plate are disposed at two ends of the battery body respectively, a connecting sleeve is disposed on the first electrode end plate, and the second electrode end plate has a contour edge extending along a length direction of the battery body and away from the battery body, to define a first mounting countersink; and the connecting sleeve can be detachably connected to a first mounting countersink of another battery, and the connecting sleeve has an electrical contact surface at a free end that is in surface contact with the second electrode end plate.