Energy storage battery pack upper cover and energy storage battery pack shell

Abstract

The utility model discloses an energy storage battery pack upper cover and an energy storage battery pack shell, and relates to the technical field of battery shells, the energy storage battery pack upper cover comprises a top plate and a plurality of side plates circumferentially connected with the top plate, the plurality of side plates are sequentially connected and enclose to form a cover body accommodating cavity, and the vertex angle formed by the side plates and the top plate is a round angle. A first edge formed by the top plate and the side plate is an arc-shaped edge, and a second edge formed by the side plate and the adjacent side plate is an arc-shaped edge. And through the arrangement of the round corners and the arc-shaped edges, the stress concentration problem can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery casings, specifically to the upper cover of an energy storage battery pack and the casing of an energy storage battery pack. Background Art

[0002] The battery pack in the prior art includes a main case, a battery module and an upper cover. There is a cavity inside the main case, and the battery module is arranged in the cavity. The upper cover includes a top plate and side plates connected to the circumferential edge of the top plate. In the prior art, the connection corners of the top plate and the side plates are usually designed as right angles, and the stress is relatively concentrated at the right angles. That is, when the top plate or the side plates are stressed and bent and deformed, the stress will be concentrated at the right angles, and the situation of fracture is likely to occur, thereby shortening the service life of the upper cover. Summary of the Utility Model

[0003] Aiming at the technical problem of stress concentration at the right angles of the battery pack, the utility model provides an upper cover of an energy storage battery pack and a casing of an energy storage battery pack. By setting rounded corners and arc-shaped edges, the problem of stress concentration can be effectively reduced.

[0004] The technical solution adopted by the utility model is as follows: An upper cover of an energy storage battery pack includes a top plate and a plurality of side plates circumferentially connected to the top plate. The plurality of side plates are sequentially connected and surrounded to form a cover body cavity. The vertex angle formed by the side plates and the top plate is a rounded corner, the first edge formed by the top plate and the side plates is an arc-shaped edge, and the second edge formed by the side plates and the adjacent side plates is an arc-shaped edge.

[0005] Optionally, a groove recessed downward is provided on the upper surface of the top plate. The edge position of the groove is close to the edge position of the top plate, and the depth of the groove is not greater than 3 cm.

[0006] Optionally, reinforcing ribs are provided on the surface of the groove, and the height of the reinforcing ribs is not greater than the depth of the groove. The technical solution adopted by the utility model is as follows: An upper cover of an energy storage battery pack includes a top plate and a plurality of side plates circumferentially connected to the top plate. The plurality of side plates are sequentially connected and surrounded to form a cover body cavity. The vertex angle formed by the side plates and the top plate is a rounded corner, the first edge formed by the top plate and the side plates is an arc-shaped edge, and the second edge formed by the side plates and the adjacent side plates is an arc-shaped edge.

[0007] Optionally, the side plates are provided with a first through hole for installing positive and negative extreme ports and a second through hole for installing data acquisition and output ports. The first through hole and the second through hole are respectively communicated with the cavity. <00000

[0008] Optionally, the side plates are provided with a third through hole for connecting an explosion-proof valve. The first through hole, the second through hole and the third through hole are arranged on the same side plate.

[0009] Optionally, one side of the side plate is connected to the top plate, and a connecting plate is provided on the other side of the side plate. The connecting plate is provided with screw holes for screws to pass through.

[0010] Optionally, the upper cover is made of cold-rolled carbon steel sheet material.

[0011] This embodiment also discloses a housing for an energy storage battery pack, which includes a box body and the energy storage battery pack upper cover described above. The upper cover is provided with a connecting plate, and the box body is detachably connected to the connecting plate.

[0012] The beneficial effect of the present utility model is that the vertex angle formed by the side plate and the top plate is set as a rounded corner, and the first edge formed by the top plate and the side plate and the second edge formed by the side plate and the adjacent side plate are both set as arc-shaped edges, which can effectively reduce the stress concentration problem and extend the service life of the upper cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the upper cover of the energy storage battery pack proposed by the embodiment of the present utility model;

[0014] The marks in each drawing are: 1, top plate; 2, side plate; 3, vertex angle; 4, first edge; 5, second edge; 6, groove; 7, reinforcing rib; 8, first through hole; 9, second through hole; 10, third through hole; 11, screw hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be described in detail below with reference to the accompanying drawings.

[0016] As Figure 1 shown, this embodiment discloses an upper cover of an energy storage battery pack, which includes a top plate 1 and a plurality of side plates 2 circumferentially connected to the top plate 1. The plurality of side plates 2 are sequentially connected and enclosed to form a cover cavity. The vertex angle 3 formed by the side plate 2 and the top plate 1 is a rounded corner, the first edge 4 formed by the top plate 1 and the side plate 2 is an arc-shaped edge, and the second edge 5 formed by the side plate 2 and the adjacent side plate 2 is an arc-shaped edge. The setting of the rounded corner and the arc-shaped edge can effectively reduce the stress concentration problem and delay the service life of the upper cover.

[0017] In this embodiment, as Figure 1 shown, the upper surface of the top plate 1 is provided with a groove 6 recessed downward, and the edge position of the groove 6 is close to the edge position of the top plate 1. The depth of the groove 6 is not greater than 3 cm. The concave depth and angle of the groove 6 can be adjusted as needed. The groove in this embodiment is a hexagonal groove. In other embodiments, the groove can be a heptagonal, octagonal or other shape.

[0018] In this embodiment, as Figure 1 shown, the surface of the groove 6 is provided with a reinforcing rib 7, and the height of the reinforcing rib 7 is not greater than the depth of the groove 6. The design of the groove 6 and the reinforcing rib 7 increases the stiffness and anti-deformation performance of the top plate 1.

[0019] In this embodiment, as Figure 1As shown, the side plate 2 is provided with a first through hole 8 for installing positive and negative extreme ports and a second through hole 9 for installing data acquisition output ports. The first through hole 8 and the second through hole 9 are respectively communicated with the cavity. The first through hole 8 and the second through hole 9 reserve channels for the wiring of the energy storage battery pack.

[0020] In this embodiment, as Figure 1 shown, the side plate 2 is provided with a third through hole 10 for connecting the explosion-proof valve. The first through hole 8, the second through hole 9, and the third through hole 10 are arranged on the same side plate 2. This facilitates the reasonable arrangement of wiring.

[0021] In this embodiment, as Figure 1 shown, one side of the side plate 2 is connected to the top plate 1, and the other side of the side plate 2 is provided with a connecting plate. The connecting plate is provided with screw holes 11 for screws to pass through. The upper cover and the box body are connected by screws.

[0022] In this embodiment, as Figure 1 shown, the upper cover is made of cold-rolled carbon steel sheet. The upper cover is integrally formed by stamping a sheet metal cold-rolled carbon steel sheet (SPCC).

[0023] The present utility model also discloses an energy storage battery pack housing, including a box body and the above-mentioned energy storage battery pack upper cover. The upper cover is provided with a connecting plate, and the box body is detachably connected to the connecting plate.

[0024] The above are only the preferred embodiments of the present utility model, and thus do not limit the patent protection scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, shall be similarly included in the protection scope of the present utility model.

Claims

1. An upper cover of an energy storage battery pack, characterized in that, It includes a top plate and a plurality of side plates circumferentially connected to the top plate. The plurality of side plates are sequentially connected and enclosed to form a cover cavity. The vertex angle formed by the side plates and the top plate is a rounded corner. The first edge formed by the top plate and the side plates is an arc edge, and the second edge formed by the side plates and the adjacent side plates is an arc edge.

2. The upper cover of the energy storage battery pack according to claim 1, characterized in that, A groove recessed downward is provided on the upper surface of the top plate. The edge position of the groove is close to the edge position of the top plate, and the depth of the groove is not greater than 3 cm.

3. The upper cover of the energy storage battery pack according to claim 2, characterized in that, Reinforcing ribs are provided on the surface of the groove, and the height of the reinforcing ribs is not greater than the depth of the groove.

4. The upper cover of the energy storage battery pack according to claim 1, wherein, The side plate is provided with a first through hole for installing positive and negative terminals and a second through hole for installing a data acquisition output port. The first through hole and the second through hole are respectively communicated with the cavity.

5. The upper cover of the energy storage battery pack according to claim 4, characterized in that, The side plate is provided with a third through hole for connecting an explosion-proof valve. The first through hole, the second through hole, and the third through hole are arranged on the same side plate.

6. The upper cover of the energy storage battery pack according to claim 1, characterized in that, One side of the side plate is connected to the top plate, and a connecting plate is provided on the other side of the side plate. The connecting plate is provided with screw holes for screws to pass through.

7. The upper cover of the energy storage battery pack according to claim 1, characterized in that, The upper cover is made of cold-rolled carbon steel sheet.

8. An energy storage battery pack housing, characterized in that, It includes a box body and the upper cover of the energy storage battery pack according to any one of claims 1 to 7. The upper cover is provided with a connecting plate, and the box body is detachably connected to the connecting plate.

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