Battery Pack Top Cover Reinforced by Cell-Mounted Structure
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Solution Overview
Problem
The top cover of a battery has insufficient rigidity and structural strength, leading to deformation or damage when subjected to force, which affects the battery's operating performance, safety, and reduces its service life.
Innovation Solution
The upper part of at least some battery cells is fixedly connected to the top cover, enhancing its rigidity and structural strength through bonding, welding, or bolt connections, and incorporating buffer structures and reinforcement beams to absorb collision energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the top cover is made with simple structure, then manufacturing cost is reduced, but rigidity and structural strength are insufficient
Solution Approach 1:
The top cover is constructed as a composite structure integrating the cover plate, connection plates, and battery cells together. This composite design enhances the overall rigidity and structural strength without requiring additional separate reinforcement components, thus resolving the contradiction between strength improvement and complexity increase.
Solution Approach 2:
The invention merges the top cover structure with the battery cell arrangement by fixing battery cells to the connection plates, which are in turn connected to the cover plate. This integration creates a unified load-bearing structure that improves strength while avoiding separate reinforcement elements.
2Weight of moving object
If the top cover is made thinner or lighter, then weight is reduced, but deformation resistance is insufficient
Solution Approach 1:
The top cover forms a composite structure with battery cells and connection plates, creating a load-bearing system where the combined structure provides high deformation resistance without requiring the cover plate itself to be thick or heavy. The battery cells act as structural reinforcement elements within the composite assembly.
3Reliability
If connection methods are simplified, then manufacturing process is easier, but connection stability is insufficient
Solution Approach 1:
The connection plates serve multiple functions: they connect the cover plate to battery cells, provide mounting surfaces for terminals, and contribute to the overall structural rigidity. This multi-functionality achieves reliable connections without requiring complex specialized components or processes.
Data Source
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AI summary
Disclosed are a battery (100) and a vehicle (1000). The battery (100) comprises: a battery box (1) and at least one battery cell (20). The battery box (1) comprises a box body (11) and a top cover (12), the top cover (12) is arranged on the top of the box body (11), and an accommodation cavity (15) is defined between the top cover (12) and the box body (11). All the battery cells (20) are arranged in the accommodation cavity (15), and the upper part of at least some of the battery cells (20) is fixedly connected to the top cover (12).