Battery Pack Sealing Cabinet for Simultaneous Airtightness Testing
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Solution Overview
Problem
Current sealing test devices for battery packs in electric vehicles have limited functionality, low integration, and cannot simultaneously inspect the airtightness of the battery pack body and the water cooling plate, leading to a cumbersome and non-automated test process.
Innovation Solution
A sealing test cabinet for battery packs is designed with a housing containing a first test unit for inspecting the airtightness of the battery pack body and a second test unit for inspecting the airtightness of the water cooling plate, allowing for simultaneous testing and high automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate test devices are used for battery pack body and water cooling plate, then each component can be tested independently, but the test process becomes cumbersome and automation is reduced
Solution Approach 1:
The patent combines the test functions for the battery pack body and water cooling plate into a single integrated test device. The housing contains both a first test unit for the battery pack body and a second test unit for the water cooling plate, allowing simultaneous testing of both components through a unified control system, thereby simplifying operations and enhancing automation.
Solution Approach 2:
The test device is designed with multi-functionality to handle different testing requirements. The first test unit and second test unit can perform different testing operations (positive pressure and negative pressure tests) on different components, making the device versatile and adaptable to various testing scenarios while maintaining automation.
2Reliability
If multiple separate testing stations are deployed, then comprehensive testing coverage is achieved, but device integration and test efficiency are reduced
Solution Approach 1:
The patent merges multiple testing functions into a single housing that contains both test units. This integrated design allows simultaneous testing of the battery pack body and water cooling plate, achieving comprehensive testing coverage while improving test efficiency by eliminating the need for multiple separate testing stations and reducing test time.
3Adaptability or versatility
If manual testing procedures are used, then flexibility in testing methods is maintained, but automation level and operational ease are reduced
Solution Approach 1:
The test device incorporates universal testing capabilities that can adapt to different testing requirements. The first and second test units can perform both positive pressure and negative pressure tests on different components, providing methodological flexibility while maintaining high automation through centralized control, thus improving operational convenience without sacrificing adaptability.
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 enables easy and highly automated testing of the airtightness of both the battery pack body and the water cooling plate simultaneously, improving test efficiency and integration.
Implementation Method 1
a pressure stabilizing tank, where the pressure stabilizing tank is operably connected to the first test unit and the second test unit and configured to inject gas to the battery pack body and the water cooling plate. With the pressure stabilizing tank injecting gas, airtightness can be inspected for the battery pack body and the water cooling plate under positive pressure.
Implementation Method 2
a vacuum generator, where the vacuum generator is operably connected to the first test unit and the second test unit and configured to extract gas from the battery pack body and the water cooling plate. With the vacuum generator extracting gas, airtightness can be inspected for the battery pack body and the water cooling plate under negative pressure.
Implementation Method 3
a first differential pressure sensor, the first differential pressure sensor being configured to detect a differential pressure value between the first standard end pressure and the first test end pressure in the first test stage; and a first leak detector, the first leak detector being configured to provide an inspection result of the airtightness of the battery pack body based on the differential pressure value
Data Source
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AI summary
This application discloses a sealing test cabinet for battery pack. The battery pack includes a battery pack body and a water cooling plate. The sealing test cabinet includes: a housing; a first test unit arranged in the housing, the first test unit being configured to test airtightness of the battery pack body; and a second test unit arranged in the housing, the second test unit being configured to test airtightness of the water cooling plate. The sealing test cabinet of this application can inspect airtightness of the battery pack body and airtightness of the water cooling plate at the same time, allowing for easy test operations and high automation.