阅读说明：本技术 复合母排以及功率模块 (Composite busbar and power module ) 是由 李庆洋 王智鹏 孔东晓 王雪菲 于 2019-03-22 设计创作，主要内容包括：本发明提供一种复合母排以及功率模块,复合母排,包括：电容结构层和交流导体层；交流导体层的一侧与电容结构层连接,交流导体层的另一侧与功率元件的桥臂连接；交流导体层,用于将电流输入功率元件；电容结构层,用于吸收功率元件导通或断开时产生的尖峰电流。本发明提供的复合母排可以吸收功率元件导通或断开时产生的尖峰电流,从而使功率模块中无需再设置电容装置,从而降低了功率模块的体积。(The invention provides a composite busbar and a power module, the composite busbar comprises: the capacitor structure layer and the alternating current conductor layer; one side of the alternating current conductor layer is connected with the capacitor structure layer, and the other side of the alternating current conductor layer is connected with a bridge arm of the power element; an alternating current conductor layer for inputting a current to the power element; and the capacitor structure layer is used for absorbing the peak current generated when the power element is switched on or switched off. The composite busbar provided by the invention can absorb the peak current generated when the power element is switched on or switched off, so that a capacitor device is not required to be arranged in the power module, and the volume of the power module is reduced.)

1. A composite busbar, comprising: the capacitor structure layer and the alternating current conductor layer;

one side of the alternating current conductor layer is connected with the capacitor structure layer, and the other side of the alternating current conductor layer is connected with a bridge arm of the power element;

the alternating current conductor layer is used for inputting current into the power element;

the capacitor structure layer is used for absorbing peak current generated when the power element is switched on or switched off.

2. The composite busbar according to claim 1, further comprising: an insulating layer;

the insulating layer is arranged between the alternating current conductor layer and the capacitor structure layer;

the insulating layer is used for isolating the capacitor structure layer from the alternating current conductor layer.

3. The composite busbar according to claim 2, wherein the capacitor structure layer comprises: a direct current positive electrode conductor sublayer, a direct current negative electrode conductor sublayer and a dielectric sublayer;

the dielectric sublayer is arranged between the direct current positive electrode conductor sublayer and the direct current negative electrode conductor sublayer; the direct-current positive electrode conductor sublayer or the direct-current negative electrode conductor sublayer is connected with the insulating layer;

the dielectric sub-layer is used for shielding a magnetic field generated by the direct current positive electrode conductor sub-layer and the direct current negative electrode conductor sub-layer and preventing the direct current positive electrode conductor sub-layer and the direct current negative electrode conductor sub-layer from being broken down by direct current voltage.

4. The composite busbar according to claim 3, wherein the alternating current conductor layer and the insulating layer, and the capacitor structure and the insulating layer are connected by a hot-pressing process.

5. The composite busbar according to claim 3, wherein the direct-current positive conductor sublayer and the dielectric sublayer and the direct-current negative conductor sublayer and the dielectric sublayer are connected through a hot-pressing process.

6. The composite busbar according to claim 3, wherein the dielectric sublayer is made of mica and Polytetrafluoroethylene (PTEF).

7. The composite busbar according to claim 3, wherein the thickness of the dielectric sublayer is less than 1 mm.

8. The composite busbar according to claim 3, wherein the insulating layer has a thickness greater than a thickness of the dielectric sublayer.

9. The composite busbar according to claim 3, wherein the insulating layer is made of a high-impedance polyethylene terephthalate (PET) material.

10. A power module, comprising: a power element and a composite busbar according to any one of claims 1 to 9.