In the process of research, development, production, and quality control of electrical products, ensuring the safety and reliability of equipment has always been of utmost importance. With the rapid development of technology, the application scenarios of electrical equipment are becoming increasingly diverse, and the heat generation problem during the operation of equipment has become more and more prominent. Excessive temperature not only leads to a decline in equipment performance, but may also cause catastrophic accidents such as fires in severe cases. Therefore, temperature – rise testing, as a core means of evaluating the thermal stability and safety of electrical products, is of self – evident importance. In this process, the temperature – rise test corner plays an indispensable and crucial role.
1. Working Principle and Structure of the Temperature – Rise Test Corner
1.1 Working Principle
The temperature – rise test corner aims to simulate the conditions of electrical equipment in the actual use environment, thereby accurately measuring the temperature rise of the equipment’s surface or key internal components. Through such testing, the thermal performance of the equipment during long – term continuous operation can be accurately evaluated, and so as to determine whether it meets relevant safety standards.
During the test, using a draught-proof enclosure to further optimize the test environment. The draught-proof enclosure can effectively control the air flow around the test corner and prevent the interference of external air convection on the test results. For example, during actual testing, the flow of external air may accelerate the heat dissipation on the equipment’s surface, resulting in a measured temperature rise value lower than that during actual operation.
1.2 Structural Key Points
- Spatial Layout: The test corner is usually composed of three mutually perpendicular and intersecting planes, namely two side walls and one bottom surface, jointly forming a spatial structure similar to a room corner. Each plane of the test corner is evenly distributed with several temperature – measuring points. Each temperature – measuring point consists of a thermocouple and a copper sheet. One end of the thermocouple is precisely welded to the copper sheet, and lead the other end to a terminal for easy connection to a temperature recorder, to detect the temperature change of each point in real – time, ensuring the accuracy and comprehensiveness of data collection.
- Material Selection: The plates constituting the test corner need to be made of non – metallic materials with good heat – insulation performance, such as plywood. And all should be painted black, so it also be called as black test corner.
- Size Setting: According to the differences of the tested objects, the specific size of the test corner will be adjusted accordingly. Generally, for small household appliances, a test corner with a width in the range of 0.5 to 1 meter is recommended; for large – scale industrial equipment, it will require a larger – scale space to meet the test needs.
2. Application Fields of the Temperature – Rise Test Corner
2.1 Household Appliance Field
In the design and production process of household appliances, the temperature – rise test corner plays a crucial role. Taking kitchen appliances such as microwave ovens and electric ovens as examples, during the product research and development stage, strict temperature – rise testing must be carried out to verify that the surface temperature of the appliance does not exceed a safe level, avoiding the risk of scalding users. By placing the appliance in the temperature – rise test corner for testing, can accurately measure the temperature changes of various parts of the appliance during operation, thereby optimizing the product’s heat – dissipation design and improving the product’s safety and user experience.
2.2 Information Technology Equipment Field
IEquipment such as server cabinets and network switches generate a large amount of heat during operation. If the heat dissipation is not smooth, it is extremely easy to cause equipment failures, resulting in serious consequences such as data loss or service interruption. The temperature – rise test corner can simulate the heat – dissipation conditions of these equipment in environments such as data centers. By regularly conducting temperature – rise detection on the equipment, operation and maintenance personnel can promptly detect potential failure risks and take measures in advance to optimize the heat – dissipation system, ensuring the stable operation of IT equipment.
2.3 New Energy Vehicle Field
The power battery pack of electric vehicles, as a core component, has a direct impact on the vehicle’s cruising range and service life. Therefore, automobile manufacturers usually invest a large amount of resources to conduct comprehensive and detailed temperature – rise tests on the power battery pack. For example, through temperature – rise testing to simulate the temperature changes of the battery under working conditions, R & D personnel can optimize the battery’s thermal management system, improve the stability and safety of the battery, extend the battery’s service life, and enhance the overall performance of electric vehicles.
In conclusion, the temperature – rise test corner, as a key tool for ensuring the safety and performance of electrical products, plays an irreplaceable role in various fields. With the continuous development of technology, it will continue to play an important value in promoting the quality improvement of electrical products and ensuring the safe operation of equipment.
