Battery Case Ventilation Structure for Natural Heat Dissipation
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Solution Overview
Problem
Existing battery cases face challenges in dissipating heat generated by battery cells or modules without increasing production costs or reducing energy density due to the need for separate cooling devices.
Innovation Solution
A battery case with a ventilation unit featuring inclined heat dissipation portions and through-holes, allowing heat to be discharged externally without additional cooling devices, and a coating layer to prevent air ingress during thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate cooling devices (cooling fan, cooling channel) are added to cool the battery system, then heat dissipation capability is improved, but production cost increases and energy density decreases due to installation space requirements
Solution Approach 1:
The invention extracts the heat dissipation function from separate cooling devices and integrates it into the battery case structure itself. The case body incorporates ventilation openings and heat dissipation channels that directly conduct heat from battery cells to the external environment, eliminating the need for additional cooling fans and channels.
Solution Approach 2:
The invention merges the structural case with the cooling function by integrating ventilation openings and heat dissipation pathways into the battery case body. This combination allows the case to simultaneously serve as both protective housing and thermal management system, reducing overall system complexity.
2Reliability
If cooling devices are installed to prevent temperature increase during charging and discharging, then battery stability is improved, but the installation space reduces energy density
Solution Approach 1:
The battery case body is designed to perform multiple functions simultaneously: it provides mechanical protection for battery cells and serves as the primary heat dissipation structure through integrated ventilation openings and thermal conduction pathways, eliminating the need for dedicated cooling components.
Solution Approach 2:
The battery case structure provides its own heat dissipation capability through built-in ventilation openings and heat conduction paths, allowing it to manage thermal loads without requiring external cooling systems, thereby maintaining battery stability while preserving energy density.
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 enhances energy density and reduces production costs by eliminating the need for separate cooling devices while minimizing fire risks through adjustable ventilation and thermal management.
Implementation Method 1
a ventilation unit (200) mounted in the at least one opening (110), wherein the ventilation unit (200) includes a frame (210) configured to define an outer part thereof, at least one first heat dissipation portion (220) disposed in the frame (210) so as to be inclined at a predetermined angle
Implementation Method 2
at least one first heat dissipation portion (220) disposed in the frame (210) so as to be inclined at a predetermined angle, the at least one first heat dissipation portion having a plate shape
Data Source
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AI summary
The present invention relates to a battery case having a natural heat dissipation function, and more particularly to a battery case including a case body having a hollow structure with at least one opening and a ventilation unit mounted in the at least one opening, wherein the ventilation unit includes a frame configured to define an outer part thereof, at least one first heat dissipation portion disposed in the frame so as to be inclined at a predetermined angle, the at least one first heat dissipation portion having a plate shape, and a second heat dissipation portion located along an upper edge and/or a lower edge of the at least one first heat dissipation portion, the second heat dissipation portion being provided with a plurality of second through-holes.