Sealing assembly and battery
The present application provides a sealing assembly, including a sealing element and a top cover. The sealing element includes a connection portion and a sealing portion axially connected to each other. The connection portion is disposed protruding from the sealing portion along a radial direction. The top cover is provided with a first groove, a liquid injection hole is provided at a bottom of the first groove, and a ring riveting portion is disposed protruding from a periphery of the first groove. The sealing portion is inserted into the liquid injection hole in an interference fit, and the ring riveting portion is riveted to the connection portion, so that the ring riveting portion is annularly pressed on a top surface of the connection portion. The present application further provides a battery.
1 . A sealing assembly, comprising:
a sealing element, the sealing element comprising a connection portion and a sealing portion axially connected to each other, wherein the connection portion is disposed protruding from the sealing portion along a radial direction; and
a top cover, the top cover being provided with a first groove, wherein a liquid injection hole is provided at a bottom of the first groove, a ring riveting portion is disposed protruding from a periphery of the first groove, the sealing portion is inserted into the liquid injection hole in an interference fit, and the ring riveting portion is riveted to the connection portion, so that the ring riveting portion is annularly pressed on a top surface of the connection portion.
2 . The sealing assembly of claim 1 , wherein the top cover is further provided with a second groove, wherein the second groove is annularly defined at the periphery of the first groove at intervals, and the ring riveting portion is disposed between the first groove and the second groove.
3 . The sealing assembly of claim 2 , wherein a depth H 2 of the second groove ranges from 0.5 mm to 1.5 mm, and a radial width W of the second groove ranges from 0.5 mm to 3 mm.
4 . The sealing assembly of claim 1 , wherein the connection portion comprises a boss portion and an edge portion, wherein the edge portion is annularly disposed on a side surface of the boss portion, and the ring riveting portion is annularly pressed on the edge portion.
5 . The sealing assembly of claim 4 , wherein a radial end surface of the edge portion is spaced from a side surface of the ring riveting portion.
6 . The sealing assembly of claim 4 , wherein a radial length A of the edge portion ranges from 0.5 mm to 3 mm.
7 . The sealing assembly of claim 4 , further comprising a glue filling layer, wherein the glue filling layer is partially covered on the sealing element and the ring riveting portion, and partially filled in the first groove; an avoidance gap is defined between the side surface of the boss portion and the ring riveting portion, and the glue filling layer is partially filled in the avoidance gap.
8 . The sealing assembly of claim 1 , further comprising a sealing ring, wherein the sealing ring is sleeved on the sealing portion and abutted against the bottom of the first groove.
9 . The sealing assembly of claim 1 , wherein a side wall of the first groove is obliquely disposed before the ring riveting portion is riveted, so that a width of a notch of the first groove is greater than a width of the bottom of the first groove.
10 . The sealing assembly of claim 9 , wherein the first groove is a circular groove, a diameter D 1 of the notch of the first groove ranges from 3 mm to 10 mm, and a diameter D 2 of the bottom of the first groove ranges from 2 mm to 9 mm.
11 . The sealing assembly of claim 1 , wherein a depth H 1 of the first groove ranges from 0.5 mm to 1 mm.
12 . The sealing assembly of claim 1 , further comprising a glue filling layer, wherein the glue filling layer is partially covered on the sealing element and the ring riveting portion, and partially filled in the first groove.
13 . The sealing assembly of claim 1 , wherein the top cover is further provided with a second groove, the second groove is annularly defined at the periphery of the first groove at intervals, and the ring riveting portion is disposed between the first groove and the second groove; and
a side wall of the first groove is obliquely disposed before the ring riveting portion is riveted, so that a width of a notch of the first groove is greater than a width of the bottom of the first groove.
14 . The sealing assembly of claim 1 , wherein the connection portion comprises a boss portion and an edge portion, the edge portion is annularly disposed on a side surface of the boss portion, and the ring riveting portion is annularly pressed on the edge portion; and
a side wall of the first groove is obliquely disposed before the ring riveting portion is riveted, so that a width of a notch of the first groove is greater than a width of the bottom of the first groove.
15 . The sealing assembly of claim 1 , further comprising a sealing ring, wherein the sealing ring is sleeved on the sealing portion and abutted against the bottom of the first groove; and
a side wall of the first groove is obliquely disposed before the ring riveting portion is riveted, so that a width of a notch of the first groove is greater than a width of the bottom of the first groove.
16 . The sealing assembly of claim 1 , wherein the top cover is further provided with a second groove, the second groove is annularly defined at the periphery of the first groove at intervals, and the ring riveting portion is disposed between the first groove and the second groove;
a depth H 1 of the first groove ranges from 0.5 mm to 1 mm.
17 . The sealing assembly of claim 1 , wherein the top cover is further provided with a second groove, the second groove is annularly defined at the periphery of the first groove at intervals, and the ring riveting portion is disposed between the first groove and the second groove; and
the sealing assembly further comprises a glue filling layer, wherein the glue filling layer is partially covered on the sealing element and the ring riveting portion, and partially filled in the first groove.
18 . The sealing assembly of claim 1 , wherein the connection portion comprises a boss portion and an edge portion, the edge portion is annularly disposed on a side surface of the boss portion, and the ring riveting portion is annularly pressed on the edge portion;
the sealing assembly further comprises a glue filling layer, wherein the glue filling layer is partially covered on the sealing element and the ring riveting portion, and partially filled in the first groove.
19 . The sealing assembly of claim 1 , further comprising a sealing ring and a glue filling layer, wherein the sealing ring is sleeved on the sealing portion and abutted against the bottom of the first groove, the glue filling layer is partially covered on the sealing element and the ring riveting portion, and partially filled in the first groove.
20 . A battery, comprising a sealing assembly, wherein the sealing assembly comprises:
a sealing element, the sealing element comprising a connection portion and a sealing portion axially connected to each other, wherein the connection portion is disposed protruding from the sealing portion along a radial direction; and
a top cover, the top cover being provided with a first groove, wherein a liquid injection hole is provided at a bottom of the first groove, a ring riveting portion is disposed protruding from a periphery of the first groove, the sealing portion is inserted into the liquid injection hole in an interference fit, and the ring riveting portion is riveted to the connection portion, so that the ring riveting portion is annularly pressed on a top surface of the connection portion.