Battery Module End Plate With Elastic Support for Expansion Control
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Solution Overview
Problem
Existing battery designs face issues with deformation of the battery box during expansion of the battery module, leading to increased contour dimensions, assembly challenges, and reduced service life. Additionally, lithium plating occurs due to excessive squeezing of battery cells, resulting in capacity loss.
Innovation Solution
The proposed battery design includes a box body with a mounting plate and a battery module featuring a first end plate with a first elastic support part. This elastic support part deforms to provide expansion space for the battery module, reducing the risk of box body deformation and lithium plating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the battery module is rigidly connected to the box body using locking bolts, then the assembly strength is improved, but the box body deforms under expansion force and service life decreases
Solution Approach 1:
The patent changes the connection parameter from rigid (locking bolts) to elastic (mounting plate with elastic deformation capability). The mounting plate can elastically deform to accommodate battery module expansion, preventing box body deformation while maintaining connection strength, thus resolving the contradiction between assembly strength and service life.
Solution Approach 2:
The mounting plate introduces dynamic elasticity to the connection system, allowing it to adapt to the expanding battery module during operation. This dynamic capability prevents the box body from deforming under expansion forces, thereby extending service life while maintaining adequate assembly strength.
2Strength
If the battery module is rigidly connected to the box body using locking bolts, then the assembly strength is improved, but the contour dimension increases and assembly becomes difficult
Solution Approach 1:
The patent changes the connection structure from a multi-component rigid connection (locking bolts) to a simplified elastic mounting plate structure. This reduces the contour dimension of the battery box and eliminates complex assembly operations while maintaining adequate connection strength through elastic deformation.
3Stability of the object's composition
If the mounting plate squeezes the battery cells excessively, then the battery module is restrained, but lithium plating occurs and capacity decreases
Solution Approach 1:
The patent changes the squeezing force parameter from excessive (causing lithium plating) to controlled elastic deformation. The mounting plate's elastic properties allow it to provide necessary restraint force for battery module stability while staying within safe limits to prevent lithium plating and capacity loss.
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
The solution effectively provides reliable expansion space for the battery module, reducing the likelihood of box body deformation and lithium plating, thereby enhancing assembly reliability and service life while maintaining normal battery operation.
Implementation Method 1
the first elastic support part is configured to be capable of abutting the mounting plate, being squeezed by the battery cell arrangement structure and deforming when the battery cell arrangement structure expands to provide expansion space for the battery cell arrangement structure
Data Source
AI summary
The present application provides a battery, a power consumption apparatus, and a method for producing a battery. The battery includes a box body, a battery module and a mounting plate, the battery module is disposed in the box body and includes a battery cell arrangement structure and a first end plate, the battery cell arrangement structure includes a plurality of battery cells stacked and is disposed on one side of the battery cell arrangement structure, the first end plate is fixedly connected to the battery cell arrangement structure, the mounting plate is disposed between the first end plate and the box body and is fixedly connected to the box body; the first end plate has a first elastic support part configured to be capable of abutting the mounting plate, being squeezed by the battery cell arrangement structure and deforming when the battery cell arrangement structure expands.