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With the popularization of electric vehicles and the construction of charging facilities, the performance and safety of electric vehicle charging cables have become the focus of attention. Among them, temperature rise is one of the important indicators to evaluate the performance of charging cables. In this paper, we will introduce the temperature rise test of electric vehicle charging cables and discuss its significance and test methods.

Temperature rise refers to the increase in temperature of a cable due to the heat generated by the current passing through the conductor during the charging process. Electric vehicle charging cables produce a certain amount of heat due to the high current during high power charging, and if the temperature rise is too high, it may affect the performance and safety of the cable, or even cause safety accidents. Therefore, it is of great significance to test the temperature rise of electric vehicle charging cables.

Generally in the laboratory or test site, build an appropriate test environment, including temperature control equipment, power supply equipment and test instruments. Select samples of electric vehicle charging cables that meet the standard requirements as test objects. The selection of samples should take into account cables with different power and specifications to cover different charging requirements. Set the appropriate test current according to the standard requirements or actual situation. The test current should be in line with the rated current of the charging equipment and the actual usage. During the test, record the temperature change of the cable and the test time. Infrared thermometer and other equipment can be used to monitor the cable surface temperature in real time. Based on the test data, calculate the temperature rise value of the cable. The temperature rise calculation formula and standard requirements are usually used to evaluate whether the temperature rise of the cable complies with the specified limit range.

The temperature rise test of electric vehicle charging cables can evaluate the temperature change of the cables during high power charging and determine whether they meet the safety and performance requirements. The test results can provide reference for cable design and manufacturing, optimize the cable structure and material selection, and improve its high temperature resistance and safety.OMG' implements every cable performance test during the design and production process, and strictly controls the cable quality.OMG' charging cables are rated at temperatures ranging from -40℃ to 90℃ or -40℃ to 105℃, and are resistant to both high and low temperatures. The products have gained industry standards in Europe, America, Japan and China, providing authoritative guarantee for customers' charging experience. Currently OMG's market share in electric vehicle charging cables exceeds 17%, with product footprints in more than 40 countries and regions, serving major car companies and car charging operators.