EXPLOSION-PROOF VALVE APPLICABLE TO BATTERY, BATTERY, AND ENERGY STORAGE DEVICE
An explosion-proof valve applicable to a battery, the battery, and an energy storage device are provided in the present disclosure. The energy storage device includes the battery. The battery includes the explosion-proof valve, a housing, a winding core, and a top cover assembly. The explosion-proof valve applicable to the battery includes a body, a first notch groove, and at least one second notch groove. The first notch groove is defined on a side surface of the body. The at least one second notch groove is defined on a groove wall of the first notch groove. The winding core is located in the housing. The top cover assembly seals the housing, where the explosion-proof valve is installed in the top cover assembly, and the first notch groove is defined at a side of the top cover assembly close to the winding core.
1 . An explosion-proof valve applicable to a battery, comprising:
a body;
a first notch groove defined on a side surface of the body; and
at least one second notch groove defined on a groove wall of the first notch groove.
2 . The explosion-proof valve of claim 1 , wherein the explosion-proof valve comprises a plurality of second notch grooves, and the plurality of second notch grooves are arranged at intervals in a length direction of the first notch groove.
3 . The explosion-proof valve of claim 2 , wherein at least two of the plurality of second notch grooves have different lengths.
4 . The explosion-proof valve of claim 1 , wherein each of the at least one second notch groove has a width smaller than the first notch groove.
5 . The explosion-proof valve of claim 1 , wherein each of the at least one second notch groove has a polygonal cross-section or a semicircular cross-section.
6 . The explosion-proof valve of claim 1 , wherein the body is provided with a boss at an edge of the side surface of the body, the first notch groove is adjacent to the boss, and the first notch groove is located at a radially inner side of the boss.
7 . The explosion-proof valve of claim 6 , wherein the first notch groove extends in an extension direction of the boss, and two ends of the first notch groove are spaced apart.
8 . The explosion-proof valve of claim 1 , wherein the at least one second notch groove is defined on a bottom wall of the first notch groove, and a distance between the bottom wall of the first notch groove and a bottom wall of each of the at least one second notch groove is D, D satisfying 0.015 mm ≤D≤0.025 mm.
9 . A battery, comprising:
an explosion-proof valve applicable to the battery, comprising:
a body;
a first notch groove defined on a side surface of the body; and
at least one second notch groove defined on a groove wall of the first notch groove;
a housing;
a winding core located in the housing; and
a top cover assembly sealing the housing, wherein the explosion-proof valve is installed in the top cover assembly, and the first notch groove is defined at a side of the top cover assembly close to the winding core.
10 . The battery of claim 9 , wherein the explosion-proof valve comprises a plurality of second notch grooves, and the plurality of second notch grooves are arranged at intervals in a length direction of the first notch groove.
11 . The battery of claim 9 , wherein each of the at least one second notch groove has a width smaller than the first notch groove.
12 . The battery of claim 9 , wherein each of the at least one second notch groove has a polygonal cross-section or a semicircular cross-section.
13 . The battery of claim 9 , wherein the body is provided with a boss at an edge of the side surface of the body, the first notch groove is adjacent to the boss, and the first notch groove is located at a radially inner side of the boss.
14 . The battery of claim 13 , wherein the first notch groove extends in an extension direction of the boss, and two ends of the first notch groove are spaced apart.
15 . An energy storage device, comprising:
a battery, comprising:
an explosion-proof valve applicable to the battery, comprising:
a body;
a first notch groove defined on a side surface of the body; and
at least one second notch groove defined on a groove wall of the first notch groove;
a housing;
a winding core located in the housing; and
a top cover assembly sealing the housing, wherein the explosion-proof valve is installed in the top cover assembly, and the first notch groove is defined at a side of the top cover assembly close to the winding core.
16 . The energy storage device of claim 15 , wherein the explosion-proof valve comprises a plurality of second notch grooves, and the plurality of second notch grooves are arranged at intervals in a length direction of the first notch groove.
17 . The energy storage device of claim 16 , wherein at least two of the plurality of second notch grooves have different lengths.
18 . The energy storage device of claim 15 , wherein the body is provided with a boss at an edge of the side surface of the body, the first notch groove is adjacent to the boss, and the first notch groove is located at a radially inner side of the boss.
19 . The energy storage device of claim 18 , wherein the first notch groove extends in an extension direction of the boss, and two ends of the first notch groove are spaced apart.
20 . The energy storage device of claim 15 , wherein the at least one second notch groove is defined on a bottom wall of the first notch groove, and a distance between the bottom wall of the first notch groove and a bottom wall of each of the at least one second notch groove is D, D satisfying 0.015 mm≤D≤0.025 mm.