Capacitor assembly and dry-type capacitor

1. A capacitor assembly comprising:

a first layer of capacitor elements;

a second layer of capacitor elements, wherein the first layer of capacitor elements is stacked on the second layer of capacitor elements;

a first busbar comprising a first conductive plate provided with a plurality of holes, wherein the first conductive plate is electrically coupled to the capacitor elements of the first layer via a plurality of connecting elements arranged at the respective holes of the first conductive plate; and

a second busbar electrically coupled to the first busbar and comprising a second conductive plate provided with a plurality of holes, wherein the second conductive plate is electrically coupled to the capacitor elements of the second layer via a plurality of connecting elements arranged at the respective holes of the second conductive plate, and wherein the first and second conductive plates are arranged between the first layer of capacitor elements and the second layer of capacitor elements,

wherein the first busbar further comprises a first pair of skirts arranged along opposite sides of the first conductive plate and at least partially covering the height of the capacitor elements of the first layer, and

wherein the second busbar further comprises a second pair of skirts arranged along opposite sides of the second conductive plate and at least partially covering the height of the capacitor elements of the second layer,

wherein the first pair of skirts are aligned with the second pair of skirts respectively, and

wherein the second busbar is electrically coupled to the first busbar via at least one additional connecting element soldered on the first pair of skirts and the second pair of skirts.

2. The capacitor assembly according to claim 1 , wherein the connecting elements are soldered on the first and second conductive plates and soldered to the capacitor elements of the first and second layers at the respective holes.

3. The capacitor assembly according to claim 2 , wherein each of the connecting elements comprises a braid made from a plurality of wires.

4. The capacitor assembly according to claim 1 , wherein the connecting elements are formed in the respective holes and soldered to the respective capacitor elements of the first and second layers.

5. The capacitor assembly according to claim 1 , wherein each of the skirts covers about a half of the height of the respective capacitor elements.

6. The capacitor assembly according to claim 1 , wherein the at least one additional connecting element comprises braids each made from a plurality of wires.

7. The capacitor assembly according to claim 1 , wherein the first conductive plate is in contact with the second conductive plate.

8. The capacitor assembly according to claim 1 , further comprising:

a third busbar arranged opposite to the first busbar with respect to the first layer of capacitor elements and coupled to the capacitor elements of the first layer; and

a fourth busbar arranged opposite to the second busbar with respect to the second layer of capacitor elements and coupled to the capacitor elements of the second layer.

9. The capacitor assembly according to claim 8 , wherein the third busbar comprises a third conductive plate provided with a plurality of holes, and

wherein the third conductive plate is electrically coupled to the capacitor elements of the first layer via a plurality of connecting elements arranged at the respective holes of the third conductive plate.

10. The capacitor assembly according to claim 9 , wherein the third busbar further comprises a first bending part arranged at an end of the third conductive plate, and

wherein the capacitor assembly further comprises at least one first conductive terminal coupled to the first bending part.

11. The capacitor assembly according to claim 8 , wherein the fourth busbar comprises a fourth conductive plate provided with a plurality of holes, and

wherein the fourth conductive plate is electrically coupled to the capacitor elements of the second layer via a plurality of connecting elements arranged at the respective holes of the fourth conductive plate.

12. The capacitor assembly according to claim 11 , wherein the fourth busbar further comprises a second bending part arranged at an end of the fourth conductive plate, and

wherein the capacitor assembly further comprises at least one second conductive terminal coupled to the second bending part.

13. The capacitor assembly according to claim 1 , further comprising a positioning board configured to align the capacitor elements of the first layer with the capacitor elements of the second layer.

14. The capacitor assembly according to claim 1 , wherein the capacitor assembly comprises three or more layers of capacitor elements stacked with each other, and the three or more layers of capacitor elements comprise the first layer of capacitor elements and the second layer of capacitor elements.

15. A dry-type capacitor comprising a capacitor assembly comprising:

a first layer of capacitor elements;

a second layer of capacitor elements, wherein the first layer of capacitor elements is stacked on the second layer of capacitor elements;

a first busbar comprising a first conductive plate provided with a plurality of holes, wherein the first conductive plate is electrically coupled to the capacitor elements of the first layer via a plurality of connecting elements arranged at the respective holes of the first conductive plate; and

a second busbar electrically coupled to the first busbar and comprising a second conductive plate provided with a plurality of holes, wherein the second conductive plate is electrically coupled to the capacitor elements of the second layer via a plurality of connecting elements arranged at the respective holes of the second conductive plate, and wherein the first and second conductive plates are arranged between the first layer of capacitor elements and the second layer of capacitor elements,

wherein the first busbar further comprises a first pair of skirts arranged along opposite sides of the first conductive plate and at least partially covering the height of the capacitor elements of the first layer, and

wherein the second busbar further comprises a second pair of skirts arranged along opposite sides of the second conductive plate and at least partially covering the height of the capacitor elements of the second layer,

wherein the first pair of skirts are aligned with the second pair of skirts respectively, and

wherein the at least one additional connecting element comprises braids each made from a plurality of wires.