WATERPROOF ASSEMBLY OF ENERGY STORAGE DEVICE, AND ENERGY STORAGE DEVICE

1 . A waterproof assembly of an energy storage device, the waterproof assembly comprising:

a boss, which is arranged on an outer wall of a case of a battery and comprises a first outward protruding portion that defines a first through hole in communication with the interior of the case; and

a wire harness cover, which is configured to be of a hollow cavity structure for receiving a wire harness and is internally provided with a first recess that is configured to accommodate the first outward protruding portion to communicate the first through hole with the hollow cavity.

2 . The waterproof assembly according to claim 1 , wherein the first outward protruding portion is in interference-fit with the first recess in an axial direction of the boss.

3 . The waterproof assembly according to claim 1 , wherein the boss comprises:

a first end, which is connected to a side wall of the case; and

a second end, which is arranged opposite the first end and is provided with the first outward protruding portion;

wherein a second recess is formed between the first end and the first outward protruding portion and is configured to accommodate a portion of the wire harness cover.

4 . The waterproof assembly according to claim 3 , wherein the wire harness cover comprises:

a mouth portion, which is located at one end of the wire harness cover connected to the boss and is provided with an opening through which the first outward protruding portion enters the hollow cavity of the wire harness cover;

a tail portion, which is located at the other end of the wire harness cover and comprises a second through hole through which the wire harness enters the hollow cavity of the wire harness cover; and

a transition portion, which connects the mouth portion with the tail portion, the outer diameter of one end of the transition portion connected to the mouth portion being greater than the outer diameter of one end of the transition portion connected to the tail portion.

5 . The waterproof assembly according to claim 4 , wherein the mouth portion comprises:

an opening section, which is located at one end of the mouth portion connected to the boss; and

a connecting section, which is located at the other end of the mouth portion and configured to connect the opening section with the transition portion;

wherein the inner diameter of the connecting section is greater than the inner diameter of the opening section; and the opening section, the connecting section and the transition portion jointly form the first recess.

6 . The waterproof assembly according to claim 5 , wherein the boss comprises a second outward protruding portion that is located in the second recess; and the second outward protruding portion and the first outward protruding portion form a third recess that is configured to accommodate at least a portion of the opening section when the first outward protruding portion is accommodated in the first recess, the at least a portion of the opening section being in interference-fit with the third recess.

7 . The waterproof assembly according to claim 6 , wherein a portion of the opening section in contact with the second outward portion is provided with a third outward protruding portion extending toward the first end, and the second outward protruding portion is provided with a fourth recess matching the third outward protruding portion.

8 . The waterproof assembly according to claim 4 , wherein the tail portion comprises a bent tail pipe, and an inner cavity of the bent tail pipe is in communication with the second through hole.

9 . The waterproof assembly according to claim 8 , wherein the material of the wire harness cover includes rubber.

10 . An energy storage device, comprising:

a battery;

a wire harness; and

a waterproof assembly of claim 1 for implementing a waterproof function at a connection between the wire harness and the battery.