关键词: 高压线束；碰撞保护措施；挤压失效；极限载荷

Abstract: With the increasing number of new energy vehicles, and the safety of the high-voltage circuit in the crash conditions has attracted more and more attention. For new energy vehicles in the development of collision safety performance, how to evaluate the high tension line harness insulation failure and determine the protection measures of this problem, this paper puts forward a subsystem for the high tension wire harness extrusion condition test method, the method can effectively determine the high voltage line harness, and its commonly used protection measures in different extrusion conditions can withstand the insulation failure limit load. At the same time, the design diameter is 30 mm, 60 mm and 120 mm, and taking the 50 mm 2 high voltage harness as an example, the insulation failure limit load is obtained by this method, so as to provide basis and guidance for the design protection of the high voltage harness in the crash condition.

Key words: High-voltage cables; Crash protection countermeasures; Extrusion failure; Ultimate load