IP Library › Granted Patent US 12695141
Granted Patent B2
US 12695141 · App. 18/283,990 · Granted Jul 28, 2026

Battery and battery module

Inventors: Di Wu (Hubei, CN); Kaibo Li (Hubei, CN); Wei He (Hubei, CN); Jincheng Liu (Hubei, CN)
Assignee: EVE POWER CO., LTD.
H01M50/152H01M50/107H01M50/184H01M50/188H01M50/3425H01M50/548H01M50/627
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Quick Facts
Patent No.
US 12695141
App. No.
18/283,990
Granted
Jul 28, 2026
Kind
B2
Abstract

A battery includes a housing, a core, a first connection piece, and a plate. The core is disposed in the housing. The first connection piece is disposed on one end of the housing. The first connection piece is connected to the core. The plate is disposed on the side of the first connection piece facing away from the core. The side surface of the plate facing away from the first connection piece is provided with at least two concave arc-shaped grooves at intervals. All of the arc-shaped grooves are uniformly disposed annularly along the center of the plate. Groove bottoms of the arc-shaped grooves are welded to the first connection piece.

Claims (30)

1 . A battery, comprising: a housing, a core, a first connection piece, and a plate,

wherein the core is disposed in the housing, the first connection piece is disposed on one end of the housing, the first connection piece is connected to the core, and the plate is disposed on a side of the first connection piece facing away from the core,

wherein a side surface of the plate facing away from the first connection piece is provided with at least two concave arc-shaped grooves at intervals, all of the at least two arc-shaped grooves are uniformly disposed annularly along a center of the plate, and groove bottoms of the at least two arc-shaped grooves are welded to the first connection piece, and

wherein an explosion-proof hole is disposed in the middle of the plate, the first connection piece is provided with a vent, the vent is opposite to the explosion-proof hole, a side surface of the plate adjacent to the first connect on piece is provided with a first boss, the first boss surrounds the explosion-proof hole, and an end surface of the first boss facing away from the plate is connected to the first connection piece.

2 . The battery according to claim 1 , wherein the two arc-shaped grooves are symmetrically disposed along the explosion-proof hole, a liquid injection hole is disposed on the plate, and the liquid injection hole is disposed on a symmetrical axis of the two arc-shaped grooves.

3 . The battery according to claim 2 , wherein the plate is connected to the housing to jointly form a first electrode of the battery.

4 . The battery according to claim 1 , wherein a side surface of the first connection piece facing the plate is provided with a second boss corresponding to the at least two arc-shaped grooves, and the second boss abuts against the plate.

5 . The battery according to claim 4 , wherein a length of a wide side of the second boss is L1, and a length of a wide side of each arc-shaped groove of the two arc-shaped grooves is L2, wherein L1>L2.

6 . The battery according to claim 4 , wherein the second boss is annular, or

a plurality of second bosses are provided, and a number of the plurality of second bosses matches a number of arc-shaped grooves.

7 . The battery according to claim 5 , wherein the first connection piece is provided with a plurality of liquid leakage holes, and all of the plurality of liquid leakage holes are disposed between the second boss and an edge of the first connection piece.

8 . The battery according to claim 1 , wherein the plate is connected to the housing to jointly form a first electrode of the battery.

9 . The battery according to claim 1 , wherein the side surface of the plate facing away from the first connection piece is a planar structure.

10 . The battery according to claim 1 , further comprising a pole and a sealing ring,

wherein an end surface of the housing facing away from the plate is provided with a pole hole, the pole is inserted into the pole hole, and the sealing ring is disposed between a hole wall of the pole hole and the pole.

11 . The battery according to claim 1 , further comprising a pole, wherein the core is connected to the pole by a second connection piece, and an insulating adhesive layer is wrapped on the second connection piece.

12 . A battery module, comprising: a battery, wherein the battery comprises a housing, a core, a first connection piece, and a plate,

wherein the core is disposed in the housing, the first connection piece is disposed on one end of the housing, the first connection piece is connected to the core, and the plate is disposed on a side of the first connection piece facing away from the core,

wherein a side surface of the plate facing away from the first connection piece is provided with at least two concave arc-shaped grooves at intervals, all of the at least two arc-shaped grooves are uniformly disposed annularly along a center of the plate, and groove bottoms of the at least two arc-shaped grooves are welded to the first connection piece, and

wherein an explosion-proof hole is disposed in the middle of the plate, the first connection piece is provided with a vent, the vent is opposite to the explosion-proof hole, a side surface of the plate adjacent to the first connect on piece is provided with a first boss, the first boss surrounds the explosion-proof hole, and an end surface of the first boss facing away from the plate is connected to the first connection piece.

13 . The battery module according to claim 12 , wherein the two arc-shaped grooves are symmetrically disposed along the explosion-proof hole, a liquid injection hole is disposed on the plate, and the liquid injection hole is disposed on a symmetrical axis of the two arc-shaped grooves.

14 . The battery module according to claim 12 , wherein a side surface of the first connection piece facing the plate is provided with a second boss corresponding to the at least two arc-shaped grooves, and the second boss abuts against the plate.

15 . The battery module according to claim 14 , wherein a length of a wide side of the second boss is L1, and a length of a wide side of each arc-shaped groove of the two arc-shaped grooves is L2, wherein L1>L2.

16 . The battery module according to claim 14 , wherein the second boss is annular, or

a plurality of second bosses are provided, and a number of the plurality of second bosses matches a number of arc-shaped grooves.

17 . The battery module according to claim 15 , wherein the first connection piece is provided with a plurality of liquid leakage holes, and all of the plurality of liquid leakage holes are disposed between the second boss and an edge of the first connection piece.

18 . The battery module according to claim 12 , wherein the plate is connected to the housing to jointly form a first electrode of the battery.

19 . The battery module according to claim 12 , wherein the side surface of the plate facing away from the first connection piece is a planar structure.

20 . The battery module according to claim 12 , further comprising a pole and a sealing ring,

wherein an end surface of the housing facing away from the plate is provided with a pole hole, the pole is inserted into the pole hole, and the sealing ring is disposed between a hole wall of the pole hole and the pole.