Top patch, energy-storage apparatus, and electricity-consumption device
A top patch, an energy-storage apparatus, and an electricity-consumption device are provided. The top patch is configured to be attached to the energy-storage apparatus and defines a first pole through-hole and a first elongated hole in a length direction of the top patch, the first elongated hole includes two side walls arranged opposite to each other in a width direction of the top patch, and each of the two side walls is provided with an extension bump; the first elongated hole on one side of the extension bump forms a first explosion-proof valve through-hole, and the first elongated hole on the other side of the extension bump forms a second pole through-hole, and the first pole through-hole is located between the second pole through-hole and the first explosion-proof valve through-hole, and the connecting through-hole communicates with the second pole through-hole and the first explosion-proof valve through-hole.
1. A top patch configured to be attached to an energy-storage apparatus, wherein: the top patch defines a first pole through-hole and a first elongated hole in a length direction of the top patch, the first elongated hole comprises two side walls arranged opposite to each other in a width direction of the top patch, and each of the two side walls is provided with an extension bump; the first elongated hole on one side of the extension bump forms a first explosion-proof valve through-hole, and the first elongated hole on the other side of the extension bump forms a second pole through-hole; the first pole through-hole is spaced apart from the first elongated hole; and a connecting through-hole is defined between two extension bumps, the connecting through-hole is located between the second pole through-hole and the first explosion-proof valve through-hole, and the connecting through-hole communicates with the second pole through-hole and the first explosion-proof valve through-hole.
2. The top patch according to claim 1 , wherein: the extension bump comprises a first curved surface and a second curved surface, a hole wall of the connecting through-hole is connected to a hole wall of the second pole through-hole through the first curved surface, and the hole wall of the connecting through-hole is connected to a hole wall of the first explosion-proof valve through-hole through the second curved surface.
3. The top patch according to claim 2 , wherein a radius of curvature of the first curved surface ranges from 1 mm to 5 mm; and/or
a radius of curvature of the second curved surface ranges from 1 mm to 5 mm.
4. The top patch according to claim 1 , further comprising four first outer vertex-corners arranged in sequence, wherein at least one of the four first outer vertex-corners each is a rounded corner, and the rounded corner has a radius ranging from 2.5 mm to 3.5 mm.
5. The top patch according to claim 1 , wherein the connecting through-hole is an identification through-hole, and the identification through-hole is configured to expose an identification on the energy-storage apparatus.
6. The top patch according to claim 1 , wherein in the width direction of the top patch, the connecting through-hole has a length less than the second pole through-hole; and/or
in the width direction of the top patch, the connecting through-hole has a length less than the first explosion-proof valve through-hole.
7. The top patch according to claim 1 , further comprising a liquid-injection-hole sealing-portion, wherein the liquid-injection-hole sealing-portion is connected between the first pole through-hole and the first elongated hole, the liquid-injection-hole sealing-portion is provided with an adhesive layer on one surface of the liquid-injection-hole sealing-portion close to the energy-storage apparatus, and the adhesive layer is attached to and covers a liquid-injection hole of the energy-storage apparatus.
8. An energy-storage apparatus, comprising a smooth aluminum sheet and a top patch, wherein: the top patch defines a first pole through-hole and a first elongated hole in a length direction of the top patch, the first elongated hole comprises two side walls arranged opposite to each other in a width direction of the top patch, and each of the two side walls is provided with an extension bump; the first elongated hole on one side of the extension bump forms a first explosion-proof valve through-hole, and the first elongated hole on the other side of the extension bump forms a second pole through-hole; the first pole through-hole is spaced apart from the first elongated hole; and a connecting through-hole is defined between two extension bumps, the connecting through-hole is located between the second pole through-hole and the first explosion-proof valve through-hole, and the connecting through-hole communicates with the second pole through-hole and the first explosion-proof valve through-hole;
the top patch is attached to a top of the smooth aluminum sheet, the smooth aluminum sheet comprises a smooth aluminum-sheet body and a negative electrode protrusion, the negative electrode protrusion protrudes from the smooth aluminum-sheet body, and the negative electrode protrusion is exposed beyond the second pole through-hole; and
in a width direction of the smooth aluminum sheet, a distance between an edge of the negative electrode protrusion and an edge of the smooth aluminum-sheet body is a first distance, a distance between a hole wall of the second pole through-hole and an outer edge of the top patch is a second distance, and a difference between the first distance and the second distance ranges from 0.1 mm to 4 mm.
9. The energy-storage apparatus according to claim 8 , wherein: the smooth aluminum-sheet body has a first surface facing the top patch, the energy-storage apparatus further comprises a wrapping film, and an edge of the wrapping film covers a portion of an edge of the first surface; and
in the width direction of the smooth aluminum sheet, a width of the wrapping film covering the portion of the first surface is a third distance, and the second distance is greater than the third distance.
10. The energy-storage apparatus according to claim 9 , wherein in the width direction of the smooth aluminum sheet, the difference between the first distance and the second distance is greater than a difference between the second distance and the third distance.
11. The energy-storage apparatus according to claim 8 , wherein: the smooth aluminum sheet further comprises a positive electrode protrusion and a second explosion-proof valve through-hole, the positive electrode protrusion, the negative electrode protrusion, and the second explosion-proof valve through-hole each are disposed on the smooth aluminum-sheet body, the positive electrode protrusion and the negative electrode protrusion are located on two opposite sides of the second explosion-proof valve through-hole respectively, the positive electrode protrusion is spaced apart from the second explosion-proof valve through-hole, the negative electrode protrusion is spaced apart from the second explosion-proof valve through-hole, the positive electrode protrusion is exposed beyond the first pole through-hole, the negative electrode protrusion is exposed beyond the second pole through-hole, and the second explosion-proof valve through-hole communicates with the first explosion-proof valve through-hole.
12. The energy-storage apparatus according to claim 8 , wherein the smooth aluminum sheet comprises four second outer vertex-corners arranged in sequence, and at least one of the four second outer vertex-corners each is a rounded corner, the rounded corner radius ranging from 2.5 mm to 3.5 mm.
13. The energy-storage apparatus according to claim 12 , wherein the top patch comprises four first outer vertex-corners arranged in sequence, at least one of the four first outer vertex-corners each is a rounded corner, and the at least one of the four first outer vertex-corners each has a radius of the rounded corner greater than the at least one of the four second outer vertex-corners.
14. The energy-storage apparatus according to claim 11 , wherein the smooth aluminum sheet further defines a liquid-injection hole located between the positive electrode protrusion and the second explosion-proof valve through-hole, and the liquid-injection hole is covered by an adhesive layer.
15. The energy-storage apparatus according to claim 14 , wherein the smooth aluminum-sheet body has a first surface facing the top patch, the positive electrode protrusion and the negative electrode protrusion each protrude from the first surface, the liquid-injection hole is recessed relative to the first surface, and a recessed direction of the liquid-injection hole is opposite to a protruding direction of each of the positive electrode protrusion and the negative electrode protrusion.
16. The energy-storage apparatus according to claim 15 , wherein a depth of the liquid-injection hole recessed relative to the first surface ranges from 0.7 mm to 1.0 mm.
17. The energy-storage apparatus according to claim 8 , wherein the extension bump comprises a first curved surface and a second curved surface, a hole wall of the connecting through-hole is connected to the hole wall of the second pole through-hole through the first curved surface, and the hole wall of the connecting through-hole is connected to a hole wall of the first explosion-proof valve through-hole through the second curved surface.
18. The energy-storage apparatus according to claim 17 , wherein a radius of curvature of the first curved surface ranges from 1 mm to 5 mm; and/or
a radius of curvature of the second curved surface ranges from 1 mm to 5 mm.
19. The energy-storage apparatus according to claim 8 , wherein the connecting through-hole is an identification through-hole, and the identification through-hole is configured to expose an identification on the energy-storage apparatus.
20. An electricity-consumption device, comprising an energy-storage apparatus, wherein: the energy-storage apparatus comprises a smooth aluminum sheet and a top patch, wherein the top patch defines a first pole through-hole and a first elongated hole in a length direction of the top patch, the first elongated hole comprises two side walls arranged opposite to each other in a width direction of the top patch, and each of the two side walls is provided with an extension bump; the first elongated hole on one side of the extension bump forms a first explosion-proof valve through-hole, and the first elongated hole on the other side of the extension bump forms a second pole through-hole; the first pole through-hole is spaced apart from the first elongated hole; and a connecting through-hole is defined between two extension bumps, the connecting through-hole is located between the second pole through-hole and the first explosion-proof valve through-hole, and the connecting through-hole communicates with the second pole through-hole and the first explosion-proof valve through-hole;
the top patch is attached to a top of the smooth aluminum sheet, the smooth aluminum sheet comprises a smooth aluminum-sheet body and a negative electrode protrusion, the negative electrode protrusion protrudes from the smooth aluminum-sheet body, and the negative electrode protrusion is exposed beyond the second pole through-hole; and
in a width direction of the smooth aluminum sheet, a distance between an edge of the negative electrode protrusion and an edge of the smooth aluminum-sheet body is a first distance, a distance between a hole wall of the second pole through-hole and an outer edge of the top patch is a second distance, and a difference between the first distance and the second distance ranges from 0.1 mm to 4 mm.