Series Battery Core Assembly With Adhesive Isolation Layers
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Solution Overview
Problem
Existing battery module structures in lithium-ion batteries fail to meet requirements for lightweight, low cost, and high-energy density due to excessive structural components, particularly when multiple cells are connected in series.
Innovation Solution
A battery design featuring electrode core sets connected in series with an isolation layer formed by curing an insulation adhesive on the surfaces of adjacent electrode core sets, eliminating the need for separate separators and reducing the number of housings and external mounting structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple cells are arranged side by side to increase capacity, then the overall capacity is improved, but the total weight increases
Solution Approach 1:
Multiple electrode core sets are connected in series within a single shared housing instead of using separate housings for each cell. This merging approach maintains the required capacity while significantly reducing the total weight by eliminating redundant housing structures and external mounting components.
2Weight of moving object
If electrode core sets are connected in series with minimal structures, then weight is reduced, but safety and reliability may be compromised
Solution Approach 1:
An isolation layer formed by insulation adhesive is introduced between adjacent electrode core sets to prevent short circuits and ensure safety. This intermediary structure provides the necessary electrical insulation and thermal management without adding significant weight, maintaining reliability while keeping the design lightweight.
3Strength
If traditional battery module structures are used with multiple components, then structural integrity is ensured, but device complexity and cost increase
Solution Approach 1:
Multiple electrode core sets are connected in series within a single shared housing instead of using separate housings for each cell. This merging approach maintains the required capacity while significantly reducing the total weight by eliminating redundant housing structures and external mounting components.
Solution Approach 2:
An isolation layer formed by insulation adhesive is introduced between adjacent electrode core sets to prevent short circuits and ensure safety. This intermediary structure provides the necessary electrical insulation and thermal management without adding significant weight, maintaining reliability while keeping the design lightweight.
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 ensures safety and reliability by preventing short circuits and reducing weight, while simplifying assembly and lowering costs through the use of a polymer or solid electrolyte and insulation adhesive layers.
Implementation Method 1
The isolation layer comprises a cured an insulation adhesive coated on at least one of the opposite surfaces of the two adjacent electrode core sets
Data Source
AI summary
Disclosed are a battery, a battery module, a battery pack, and an electric vehicle. The battery includes a housing and at least two electrode core sets connected in series with each other and each including at least one electrode core (4). The electrode core (4) includes a positive plate, a negative plate, and an electrolyte located between the positive plate and the negative plate. The electrolyte is a solid electrolyte or a polymer electrolyte. Isolation layers (43) are arranged between opposite surfaces of two adjacent electrode core sets. Each isolation layer (43) is formed by curing an insulation adhesive coated on at least one of the opposite surfaces of the two adjacent electrode core sets.