Battery Dehumidification Structure With Replaceable Drying Assembly
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Solution Overview
Problem
Existing battery waterproof measures fail to prevent water vapor ingress, leading to condensation and increased risk of metal corrosion and thermal runaway due to temperature differences, which are not addressed by current breathable valves.
Innovation Solution
A battery dehumidification structure with a shell and drying assembly that includes a drying element with an accommodating cavity for desiccant, allowing vapor absorption and easy replacement without disassembly, combined with a cooling assembly to manage heat and maintain dryness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the battery box is sealed to prevent water ingress, then water protection is improved, but pressure difference cannot be released and structural integrity deteriorates
Solution Approach 1:
The breathable valve automatically responds to pressure differences by opening to release excess pressure and closing when pressure equalizes, without requiring external control systems. This self-regulating mechanism maintains the sealed structure's integrity while preventing pressure buildup that could compromise structural strength, resolving the contradiction between sealing and pressure management.
Solution Approach 2:
The valve mechanism changes its operational state (open/closed) based on pressure differential parameters, allowing the sealed structure to maintain both water protection and structural integrity by dynamically adjusting to pressure conditions rather than requiring permanent structural compromises.
2Reliability
If desiccant is permanently fixed in the drying assembly, then water vapor absorption is improved, but maintenance and replacement become difficult
Solution Approach 1:
The drying assembly is segmented into a removable container housing and an internal desiccant chamber. This segmentation allows the desiccant to be accessed and replaced by simply removing the container from the battery pack, eliminating the need for complex disassembly while maintaining effective water vapor absorption throughout the battery's service life.
Solution Approach 2:
The drying assembly transitions from a static permanent installation to a dynamic removable component. The container can be easily removed and reinstalled, enabling periodic maintenance and desiccant replacement without permanent fixation, thus improving both maintainability and continued absorption effectiveness.
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
Effectively removes water vapor, extends battery life, reduces thermal runaway risk, and simplifies maintenance by allowing desiccant replacement without disassembling the battery set.
Implementation Method 1
The drying element is provided with an accommodating cavity and a plurality of through holes. The accommodating cavity is in communication with the through holes and the opening respectively, and the accommodating cavity is configured to accommodate desiccant.
Implementation Method 2
The cooling assembly includes a plurality of cooling channels that are communicate with each other. The second monitoring region is provided with at least one of the cooling channels.
Implementation Method 3
The cooling assembly includes a plurality of cooling channels that are communicate with each other
Data Source
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AI summary
A battery dehumidification structure and a battery pack are provided. The battery dehumidification structure includes a shell and a drying assembly (200). The shell is provided with a first mounting region (110) and a water vapor deposition region (120). The first mounting region is configured to mount a battery set. The water vapor deposition region is provided with a second mounting region. The drying assembly is arranged in the second mounting region, so as to remove water vapor from the battery set, so that the water vapor inside a battery box can be removed, thereby keeping the battery box in a certain dry state, extending the service life of the battery set, and reducing the risk of thermal runaway occurring in the battery set. In addition, the drying assembly can be replaced from the shell without disassembling the battery set, thereby simplifying the structure and improving the convenience of assembly.