Module configured to reduce or eliminate NVH problems of electrical equipment and electrical equipment

1. An electrical equipment comprising a housing; the housing comprising a cover panel, a peripheral wall, and a chamber defined by the peripheral wall and the cover panel; a part of the cover panel being fastened to upper edges of the peripheral wall; the electrical equipment wherein at least one support element which is installed inside the chamber at a distance from the peripheral wall, and is configured to support the cover panel; the at least one support element comprises at least one protrusion extending from a support panel, the support panel being attached to the peripheral wall; the at least one protrusion comprising a first support end which is attached to a support area of an upper surface of the support panel; and a distance between a boundary of the support area and the peripheral wall being equal to ⅓ of one of the length or the width of the support panel, wherein the distance is a minimum distance between the position of the at least one support element and the peripheral wall.

2. The electrical equipment according to claim 1 , wherein the support panel is a middle panel which is fastened to the peripheral wall or to a bottom wall, the middle panel being located between the cover panel and the bottom wall, a part of the bottom wall being attached to lower edges of the peripheral wall, wherein the middle panel divides the chamber into an upper chamber and a lower chamber.

3. The electrical equipment according to claim 1 , wherein the support panel is a bottom wall, a part of the bottom wall being attached to lower edges of the peripheral wall.

4. The electrical equipment according to claim 1 , wherein the cover panel and the at least one support element are configured such that the cover panel and the at least one support element are under constraint when edges of the cover panel are fastened to edges of the peripheral wall.

5. The electrical equipment according to claim 1 , further comprising an auxiliary element configured to fasten the at least one support element to a lower surface of the cover panel.

6. The electrical equipment according to claim 5 , wherein the auxiliary element comprises an adhesive layer formed between a second support end of the at least one protrusion and the lower surface of the cover panel, so as to fasten the at least one protrusion to the lower surface of the cover panel, wherein a distance between the first support end and the second support end is the height of the at least one support element.

7. The electrical equipment according to claim 6 , wherein the adhesive layer is made of a soft and flexible material, so as to absorb at least part of vibrations of the cover panel.

8. The electrical equipment according to claim 7 , wherein the material of the adhesive layer is an adhesive sealant glue.

9. The electrical equipment according to claim 5 , wherein the auxiliary element comprises a bolt; the lower surface of the cover panel comprising a bolt slot corresponding to the bolt; a thread shape of the bolt matching a thread shape of an inner wall of the bolt slot.

10. The electrical equipment according to claim 1 , wherein the at least one protrusion is a cylinder.

11. The electrical equipment according to claim 1 , wherein the at least one protrusion is integrally formed with the support panel.

12. The electrical equipment according to claim 1 , wherein the part of the cover panel which is fastened to the upper edges of the peripheral wall comprises edges of the cover panel.

13. The electrical equipment according to claim 1 being an inverter, a DC-to-DC converter or an onboard charger.