The invention relates to a traction network for a motor vehicle, comprising a high-voltage battery, having a first measuring device for detecting a voltage of the high-voltage battery, a measuring device for detecting a voltage between a positive high-voltage line and the ground, and a further measuring device for detecting a voltage between a negative high-voltage line and the ground, the insulation resistance between the positive high-voltage line and the ground and the insulation resistance between the negative high-voltage line and the ground are equal or are balanced by a discrete balancing resistor, and having a grounded measuring resistor which is connected to the positive high-voltage line by means of a first switching element and to the negative high-voltage line by means of a second switching element, the traction network also has an insulation monitor device which is designed to carry out insulation monitoring by comparing a voltage between the positive high-voltage line and the ground with a voltage between the negative high-voltage line and the ground when the vehicle is in a stationary state, to calculate an insulation resistance by closing one of the first and second switching elements in each case when the vehicle is in a driving mode, the invention also relates to a method for insulation monitoring.
本发明涉及一种用于机动车的牵引电网,包括高压电池,牵引电网具有用于检测高压电池的电压的第一测量装置、用于检测正高压线与地之间的电压的测量装置和用于检测负高压线与地之间的电压的另外的测量装置,正高压线和地之间的绝缘电阻与负高压线和地之间的绝缘电阻相等或通过分立的平衡电阻平衡,牵引电网还具有接地的测量电阻,其通过第一开关元件与正高压线连接并且通过第二开关元件与负高压线连接,牵引电网还具有绝缘监测器装置,其被设计为在车辆静止状态时通过将正高压线和地之间的电压与负高压线和地之间的电压比较来执行绝缘监测,在行驶运行时通过分别闭合第一开关元件和第二开关元件之一来计算绝缘电阻,还涉及一种用于绝缘监测的方法。
Traction network and method for insulation resistance monitoring in traction network
牵引电网和用于牵引电网中的绝缘电阻监测的方法
2023-07-07
Patent
Elektronische Ressource
Chinesisch
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