Prismatic Battery Terminal Structure for Flexible Pack Connections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing prismatic secondary batteries require labor-intensive design changes for terminal arrangement and complicated busbar connections, limiting flexibility and increasing production costs.
Innovation Solution
A secondary battery with spaced apart positive and negative terminals on the top surface, featuring a terminal structure with an insulating body enclosing the terminals and an extension terminal exposed on a side surface, allowing for flexible terminal positioning and direct electrical connections between batteries without busbars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the positive and negative terminals are arranged together on one side or on opposite sides according to device design specifications, then the battery can meet specific application requirements, but the design must be separately designed each time which is labor-intensive and reduces flexibility
Solution Approach 1:
The battery case is designed with universal terminal structures that can accommodate multiple terminal arrangement configurations (together on one side or on opposite sides) without requiring separate designs. The terminal structures include connection terminals with extending portions that can be positioned flexibly to meet different application requirements while using the same basic battery case design.
2Ease of manufacture
If traditional busbar connections are used to assemble multiple secondary batteries into modules or packs, then electrical connections can be established, but the busbar design becomes complicated depending on the terminal arrangement structure
Solution Approach 1:
The invention extracts the connection function from the traditional busbar system by incorporating connection terminals directly into the battery case. The extending portions of the connection terminals can directly connect to adjacent batteries, eliminating the need for separate busbars and simplifying the overall assembly process while maintaining electrical connection functionality.
3Ease of operation
If the terminals are exposed on the battery case, then electrical connections can be made, but the terminals may be damaged or create safety hazards
Solution Approach 1:
The connection terminals are nested within the battery case structure, with the extending portions emerging from designated openings. This nested configuration protects the main terminal bodies inside the case while providing accessible connection points outside, balancing protection with connectivity needs.
Data Source
Figure 1
Figure 2
Figure 3(a)~3(c)
AI summary
Disclosed herein relates to a secondary battery having a positive and negative terminal spaced apart on a top surface of a battery case having a hexahedral shape, and, in one example, includes a terminal structure including a terminal body coupled to a top surface of the battery case and one or more faces extending from the top surface while enclosing the positive or negative terminal so that it is not exposed, and an extension terminal electrically connected to the positive or negative terminal and exposed to any one surface of the terminal bodies except the top surface, and having a connection terminal facing the thickness direction of the secondary battery on the extension terminal.