RIVETING ASSEMBLY, BATTERY, ELECTRICAL EQUIPMENT, AND ASSEMBLING METHOD AND EQUIPMENT OF RIVETING ASSEMBLY

1 . A riveting assembly comprising:

a first member, having a first connecting portion;

a second member, having a first hollow portion, and having a first wall and a second wall opposed to each other; and

a riveting piece, comprising a rivet body configured to sequentially pass through the first wall, the first hollow portion, the second wall and the first connecting portion, the first connecting portion being located on one side of the second wall facing away from the first wall;

wherein in an axial direction of the rivet body, the rivet body has a first weak portion and a first limiting portion which are disposed at intervals, and the first weak portion is configured to protrude in a radial direction of the rivet body when the rivet body is stressed in the axial direction of the rivet body, so as to form a second limiting portion located in the first hollow portion, so that the first connecting portion and the second wall are connected between the first limiting portion and the second limiting portion.

2 . The riveting assembly according to claim 1 , wherein the rivet body is further provided with a second weak portion, and the second weak portion is configured to protrude in the radial direction of the rivet body when the rivet body is stressed in the axial direction of the rivet body, so as to form the first limiting portion.

3 . The riveting assembly according to claim 2 , wherein a stiffness of the first weak portion is smaller than a stiffness of the second weak portion.

4 . The riveting assembly according to claim 3 , wherein a wall thickness of the first weak portion is smaller than a wall thickness of the second weak portion, so that the stiffness of the first weak portion is smaller than the stiffness of the second weak portion.

5 . The riveting assembly according to claim 1 , wherein the rivet body comprises a body portion and a riveting portion, the first weak portion and the first limiting portion are both disposed on the body portion, and the riveting portion is connected to the body portion and located on one side of the first limiting portion facing away from the first weak portion; and

the rivet body has a second hollow portion, and the riveting portion is used to cooperate with a pull riveting tool passing through the second hollow portion.

6 . The riveting assembly according to claim 5 , wherein the riveting portion is provided with an internal thread for being connected with the pull riveting tool.

7 . The riveting assembly according to claim 2 , further comprising a third member, wherein the third member is located on one side of the first wall facing away from the second wall; and

the riveting piece further comprises a flange portion, and the flange portion is connected to one end of the rivet body and located on one side of the third member facing away from the first wall.

8 . The riveting assembly according to claim 7 , wherein the rivet body further comprises a third weak portion, the third weak portion is configured to protrude in the radial direction of the rivet body when the rivet body is stressed in the axial direction, so as to form a third limiting portion, and the third limiting portion is configured to fill a gap between the first wall and the third member.

9 . The riveting assembly according to claim 7 , wherein the rivet body further has a third weak portion, and the third weak portion is configured to protrude in the radial direction of the rivet body when the rivet body is stressed in the axial direction, so as to form a third limiting portion, so that the third member and the first wall are connected between the flange portion and the third limiting portion.

10 . The riveting assembly according to claim 8 , wherein a stiffness of the third weak portion is greater than the stiffness of the second weak portion.

11 . The riveting assembly according to claim 10 , wherein a wall thickness of the third weak portion is greater than the wall thickness of the second weak portion, so that the stiffness of the third weak portion is greater than the stiffness of the second weak portion.

12 . The riveting assembly according to claim 1 , wherein the rivet body has a second hollow portion, an inner surface of the rivet body is provided with a first groove, and the rivet body forms the first weak portion in an area of the first groove.

13 . The riveting assembly according to claim 12 , wherein the first groove is a closed structure extending in a circumferential direction of the rivet body.

14 . The riveting assembly according to claim 1 , wherein the riveting assembly is a battery box, the first member is formed with an accommodating space for a battery cell, the second member is accommodated in the accommodating space, and the second member is used to divide the accommodating space into a subspace accommodating the battery cell.

15 . A battery comprising:

a battery cell; and

the riveting assembly according to claim 14 , wherein the battery cell is accommodated in the subspace.

16 . Electrical equipment comprising the battery according to claim 15 .

17 . An assembling method of a riveting assembly comprising:

providing a first member, a second member and a riveting piece, wherein the first member has a first connecting portion; the second member has a first hollow portion, the second member has a first wall and a second wall opposed to each other, and the first connecting portion is located on one side of the second wall facing away from the first wall; and the riveting piece includes a rivet body, and in an axial direction of the rivet body, the rivet body has a first weak portion and a first limiting portion which are disposed at intervals;

passing the rivet body sequentially through the first wall, the first hollow portion, the second wall and the first connecting portion; and

performing press riveting on the riveting piece, so that the first weak portion protrudes in a radial direction of the rivet body to form a second limiting portion, and thus the first connecting portion and the second wall are connected between the first limiting portion and the second limiting portion.

18 . The assembling method of the riveting assembly according to claim 17 , wherein the rivet body is further provided with a second weak portion; and

the assembling method of the riveting assembly further includes:

performing pull riveting on the riveting piece, so that the second weak portion protrudes in the radial direction of the rivet body to form the first limiting portion.

19 . The assembling method of the riveting assembly according to claim 18 , wherein the riveting assembly further comprises a third member;

the assembling method of the riveting assembly further includes:

providing the third member and positioning the third member on one side of the first wall facing away from the second wall,

the riveting piece further includes a flange portion, the flange portion is connected to one end of the rivet body and located on one side of the third member facing away from the first wall, the rivet body further includes a third weak portion, the third weak portion is disposed close to the flange portion relative to the first weak portion,

the assembling method of the riveting assembly further includes:

performing press riveting on the riveting piece, so that the third weak portion protrudes in the radial direction of the rivet body to form a third limiting portion, wherein the third limiting portion is configured to fill a gap between the first wall and the third member, or the third limiting portion is configured to cooperate with the flange portion to connect the third member and the first wall between the flange portion and the third limiting portion.