Battery Holder Restriction Members for Thermal Management
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Solution Overview
Problem
Existing battery holders face challenges such as cumbersome resin filling, reduced productivity, and inconsistent force application due to dimensional variations, which can lead to battery deformation or inadequate holding, affecting temperature uniformity and lifespan.
Innovation Solution
A battery device with a holding base plate and restriction members featuring tapered and support surfaces that apply radial force and maintain axial positioning, allowing for even cooling medium flow and temperature equalization by fixing intervals between batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If elastic deformable members are used to hold batteries, then the batteries can be held with some flexibility, but dimensional variations cause inconsistent force application leading to battery deformation or insufficient holding
Solution Approach 1:
The holding device is divided into multiple independent holding members, each with its own elastic deformable member. This segmentation ensures that each member independently holds one battery without being affected by dimensional variations of other batteries, thereby maintaining consistent holding force across all batteries despite variations in their dimensions.
Solution Approach 2:
Each holding member is designed with specific local properties including a tapered surface for line contact and a support surface for surface contact. The tapered surface applies radial force to position the battery, while the support surface provides stable support. This local differentiation of contact characteristics ensures consistent and appropriate force application to each battery individually.
2Temperature
If cooling passages are arranged between batteries, then cooling efficiency can be improved, but inconsistent battery spacing leads to uneven cooling and temperature variations
Solution Approach 1:
The holding members with tapered surfaces preliminarily position the batteries in precise spacing before the cooling process begins. By pre-establishing uniform intervals between batteries through the mechanical action of the tapered surfaces, the cooling passages are ensured to be evenly distributed, enabling uniform cooling and preventing temperature variations.
Solution Approach 2:
The invention replaces reliance on manual or imprecise mechanical positioning with a standardized holding member system that mechanically enforces precise battery spacing. The tapered surfaces provide a deterministic mechanical means to achieve uniform intervals, substituting for less precise positioning methods and ensuring consistent cooling passage spacing.
3Stability of the object's composition
If resin filling is used for modularization, then battery stability can be improved, but the filling process becomes troublesome and productivity decreases
Solution Approach 1:
The invention extracts the stabilization function from the resin filling process and transfers it to the holding members. The holding members with elastic deformable members provide mechanical stabilization and positioning without requiring resin filling, thereby eliminating the troublesome filling process while maintaining battery stability and improving productivity.
Solution Approach 2:
The holding members act as intermediaries between the battery module structure and the individual batteries. Instead of using resin as the mediating substance, the holding members with their elastic deformable members provide the necessary stabilization and positioning function, replacing the resin's role and simplifying the assembly process.
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 configuration enhances battery life by ensuring consistent force application, reducing temperature variations, and facilitating efficient cooling, thereby preventing premature battery degradation.
Implementation Method 1
a tapered surface which is inclined to the axial direction and is in line contact with an outer periphery of the end face of the battery when the restriction member is located in the space, so as to apply a force to move the battery in a radial direction of the battery
Implementation Method 2
a support surface which supports a side face of the battery that is not in contact with the tapered surface, by surface contact. The support surface is configured to receive a moving force in the radial direction from the tapered surface and support the side face of the battery by a reactive force
Implementation Method 3
The elastic member may be made of a material having a greater displacement than a displacement of the tapered surface when being pressed by the battery
Data Source
AI summary
A battery holder includes restriction members protruded from a holding base plate in an axial direction of batteries to be located in spaces between the batteries. Each of the restriction members has: a tapered surface which is inclined to the axial direction and is in line contact with an outer periphery of the end face of the battery when the restriction member is inserted into the space, so as to apply a force to move the battery in a radial direction of the battery; and a support surface which supports a side face of the battery that is not in contact with the tapered surface, by surface contact. The support surface receives a moving force in the radial direction from the tapered surface and supports the side face of the battery by a reactive force.