Battery Module Cooling Recess Structure for Easier Assembly
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Solution Overview
Problem
Conventional heat dissipation methods for battery modules, such as using aluminum heat dissipation elements, complicate the structure and hinder assembly of battery modules.
Innovation Solution
A battery module design featuring a shell, cell assembly, and a first heat dissipation element with recesses that accommodate cell housings, allowing direct heat conduction to a heat dissipation channel, thereby shortening the heat dissipation path and increasing the heat dissipation area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If aluminum heat dissipation elements are added between battery cells, then heat dissipation efficiency is improved, but structure complexity increases and assembly becomes more difficult
Solution Approach 1:
The patent combines the heat dissipation function with the existing battery cell housing structure. The cell housing itself is designed to serve as the heat dissipation element, integrating two functions (structural containment and thermal management) into a single component, thereby eliminating the need for separate aluminum heat dissipation elements and reducing structural complexity
Solution Approach 2:
The cell housing is designed to perform multiple functions: it provides structural containment for the battery cell and simultaneously acts as a heat dissipation element. This multi-functional design allows the same component to fulfill both mechanical and thermal management roles, simplifying the overall battery module structure
2Temperature
If aluminum heat dissipation elements are added between battery cells, then heat dissipation efficiency is improved, but assembly becomes more difficult
Solution Approach 1:
By merging the heat dissipation function into the cell housing structure, the number of separate components is reduced. This integration means that during assembly, fewer parts need to be handled and installed, thereby simplifying the assembly process and improving ease of operation
Solution Approach 2:
The patent extracts the heat dissipation function from separate aluminum elements and integrates it into the cell housing. This extraction and integration approach eliminates the need for additional assembly steps related to installing separate heat dissipation components
3Temperature
If heat dissipation path is shortened by direct contact, then heat dissipation efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The cell housing is designed to be in direct contact with the battery cell, creating an integrated thermal pathway. This merging of structures ensures continuous thermal contact without requiring separate alignment procedures or precision-machined interfaces between discrete components
Solution Approach 2:
The cell housing is designed with specific local features (such as contact surfaces or protrusions) that ensure adequate thermal contact with the battery cell. These localized design features provide sufficient thermal coupling without requiring high precision across the entire assembly, balancing heat dissipation effectiveness with manufacturing feasibility
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
Improves heat dissipation efficiency, simplifies the structure, and facilitates assembly by directly conducting heat from battery cells to the heat dissipation element through recesses, enhancing thermal management.
Implementation Method 1
the heat of a battery cell can be directly conducted to the first heat dissipation element
Implementation Method 2
The first heat dissipation recess can increase the heat dissipation area of the first heat dissipation element, thereby improving the heat dissipation efficiency
Data Source
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AI summary
This application discloses a battery module, a battery pack, and an electrical device. The battery module comprises a shell, a cell assembly, and a first heat dissipation element. The cell assembly is disposed in the shell. The cell assembly includes a plurality of battery cells. Each battery cell includes a cell housing and electrode terminals extends out of the cell housing. The first heat dissipation element is provided with a first heat dissipation channel. The first heat dissipation channel communicates with the outside. The first heat dissipation element is provided with a first heat dissipation recess. The first heat dissipation recess accommodates at least one cell housing. A part of each cell housing is disposed in the first heat dissipation recess. In this application, by disposing the first heat dissipation recess on the first heat dissipation element and disposing a part of the cell housing in the first heat dissipation recess, the heat of a battery cell can be directly conducted to the first heat dissipation element. The heat is taken away through the first heat dissipation channel, thereby shortening the heat dissipation path. The first heat dissipation recess can increase the heat dissipation area of the first heat dissipation element, thereby improving the heat dissipation efficiency, simplifying the structure of the battery module, and facilitating assembling.