Battery Pack Thermal Control Using Integrated Cooling and Insulation
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Solution Overview
Problem
Existing battery packs for emergency power systems in high-temperature environments suffer from rapid temperature increases, leading to reduced lifespan due to insufficient cooling and heat insulation, which existing technologies fail to maintain the battery pack temperature below the external environment.
Innovation Solution
A battery pack design incorporating a temperature adjustment element, heat plate, cooling fan, and heat insulation material to manage and discharge heat internally, maintaining the battery pack temperature lower than the external environment, using a Peltier element and refrigerant circulation to cool the battery cell stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling device is integrated into a battery pack, then temperature control capability is improved, but device complexity increases
Solution Approach 1:
The cooling device is integrated with the battery pack structure by forming the cooling channel walls as part of the battery pack housing, merging two separate components (cooling device and battery pack) into a unified structure, thereby improving temperature control while minimizing additional complexity
Solution Approach 2:
The battery pack structure serves multiple functions: it contains the battery cells, provides structural support, and simultaneously forms the cooling channels for thermal management, allowing the same structure to perform both mechanical and thermal control functions
2Loss of energy
If cooling channels are formed in the battery pack, then heat dissipation is improved, but manufacturing complexity increases
Solution Approach 1:
The cooling channels are formed using injection molding technology that creates hollow cavities within the battery pack structure, allowing coolant flow paths to be integrated directly into the manufactured part without additional assembly steps or complex machining operations
Solution Approach 2:
Traditional mechanical methods for creating cooling channels (such as drilling, machining, or assembling separate cooling plates) are replaced by injection molding technology, which forms the channels directly during the manufacturing process, significantly simplifying production
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 battery pack effectively maintains a lower temperature than the external environment, preventing deterioration and extending the lifespan of the battery cells by efficiently managing heat, even in high-temperature conditions.
Implementation Method 1
a cooling device (40) integrated into the battery pack (10), wherein the cooling device (40) comprises a cooling channel (41)
Implementation Method 2
the sealing element (46) comprises a substantially rectangular body with an L-shaped cross-section
Data Source
Figure 1~2
Figure 3~5
AI summary
The present invention relates to a battery pack including a battery cell stack including a plurality of battery cells, a temperature adjustment element configured to prevent an increase in temperature of the battery cell stack due to a high external temperature, a heat plate disposed at a lower surface and a side surface of the battery cell stack, a pack case configured to receive the battery cell stack, the temperature adjustment element, and the heat plate therein, and a cooling fan configured to discharge heat in the pack case to the outside, wherein the battery cell stack is configured such that, when external power is supplied to an electrical apparatus connected to the battery pack, the battery cell stack does not supply current to the electrical apparatus, and when no external power is supplied to the electrical apparatus, the battery cell stack supplies current to the electrical apparatus, whereby it is possible to maintain the temperature in the battery pack so as to be lower than the temperature outside the battery pack.