Battery Module End Panel With Floating Mount for PCB Bending
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Solution Overview
Problem
Existing battery modules suffer from damage to circuit boards due to bending deformation of control devices connected to end panels, which occurs during the cyclic expansion of cells, leading to potential safety issues.
Innovation Solution
A battery module design featuring an end panel assembly with a floating connection assembly that allows the electrical structure to move independently of the end panel deformation, using a sliding mechanism and position-limiting structures to maintain the electrical structure's straightness during cell expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If control devices are fixedly connected to the end panel surface, then the electrical structure is securely mounted, but the circuit boards within the control devices bend and are damaged during cell expansion
Solution Approach 1:
The patent introduces a floating connection assembly with sliding mechanisms that allow the electrical structure to dynamically adjust its position during cell expansion. The assembly includes sliding grooves and sliding blocks that enable controlled movement, transforming the rigid fixed connection into a dynamic adaptive connection that maintains electrical contact while accommodating dimensional changes of the battery cells.
Solution Approach 2:
The floating connection assembly changes the connection parameters from rigid fixed positioning to flexible sliding positioning. The sliding mechanism allows positional parameters to vary within a controlled range, enabling the electrical structure to adapt to cell expansion while maintaining secure mounting. The position-limiting structures ensure the movement remains within safe boundaries.
2Stability of the object's composition
If the end panel is rigidly structured, then the peripheral frame provides stable support, but the control devices bend with the panel during cell expansion
Solution Approach 1:
The floating connection assembly segments the rigid end panel structure into movable and fixed zones. The sliding mechanism divides the connection function into independent movable components (sliding blocks) and fixed components (panel mounting holes), allowing the panel to maintain overall stability while the connection points can independently adjust to accommodate deformation.
Solution Approach 2:
The floating connection assembly acts as an intermediary between the rigid end panel and the electrical structure. It includes position-limiting structures such as sliding grooves and limiting blocks that mediate the interaction between panel deformation and electrical component positioning, allowing controlled movement while preventing excessive deformation.
3Ease of manufacture
If the electrical structure is fixed to the end panel, then the mounting is simple and secure, but the electrical structure cannot move independently during cell expansion
Solution Approach 1:
The floating connection assembly transforms the static fixed mounting into a dynamic sliding mounting. The sliding blocks move within sliding grooves, providing adaptability while maintaining manufacturing simplicity through standardized sliding mechanisms and position-limiting structures that are straightforward to implement.
Data Source
AI summary
Provided are a battery module and a battery pack. The battery module includes an end panel assembly, including an end panel body and a floating connection assembly, wherein the floating connection assembly is slidably connected to the end panel body; an electrical structure, wherein a part of the electrical structure is connected to a first area of a first panel, and the other part of the electrical structure is connected to a second area of the first panel; and a cell, disposed on one side close to the second panel. When the cell is in an expanded status, the first area of the end panel body moves away from the cell relative to the second area, the floating connection assembly moves away from the cell relative to the end panel body, so that the electrical structure as a whole moves with the first area of the end panel body.