The invention provides a thin-film capacitor, a preparation method thereof, a motor controller and a vehicle. The thin-film capacitor comprises a capacitor core, a first electrode and a second electrode, the capacitor core is provided with two end faces which are oppositely arranged, and each end face of the two end faces comprises a first metal spraying layer and a second metal spraying layer which are arranged at an interval, and a transition area located between the first metal spraying layer and the second metal spraying layer; first electrodes are welded to the first metal spraying layers located on the two end faces, and second electrodes are welded to the second metal spraying layers located on the two end faces. Each end face of the capacitor core is provided with the first metal spraying layer and the second metal spraying layer, so that the positive and negative terminals connected with the capacitor core can lead out wires at the same end (face), the distance between positive and negative copper bars connected with the positive and negative terminals is shortened, and the overall stray inductance of the capacitor is reduced. When the thin film capacitor is used as the bus capacitor of the MCU, higher switching speed, namely higher bus voltage, can be realized, and system efficiency and platform voltage can be improved.
本申请提供一种薄膜电容器、其制备方法、电机控制器及车辆,薄膜电容器包括电容芯子、第一电极和第二电极;电容芯子具有相对设置的两个端面,两个端面中的每个端面均包括间隔设置的第一喷金层和第二喷金层,以及位于第一喷金层和第二喷金层之间的过渡区;位于两个端面的第一喷金层均焊接第一电极,位于两个端面的第二喷金层均焊接第二电极。在本申请中的电容芯子的每个端面均设置第一喷金层和第二喷金层,实现连接电容芯子的正负极端子可以同端(面)出线,缩短了连接正负极端子的正负铜排距离,从而降低电容整体杂感。将薄膜电容器作为MCU的母线电容使用时,可以实现更快的开关速度即更高的母线电压,可以提高系统效率以及平台电压。
Thin film capacitor, preparation method thereof, motor controller and vehicle
薄膜电容器、其制备方法、电机控制器及车辆
17.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | H01G Kondensatoren , CAPACITORS / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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