Battery pack upper cover and energy storage device

Abstract

The utility model discloses a battery pack upper cover and an energy storage device, the battery pack upper cover is of an integrally formed structure, the battery pack upper cover comprises a top plate, a first side plate and a second side plate which are oppositely arranged on two sides of the top plate, and a first end plate and a second end plate which are oppositely arranged on the other two sides of the top plate, and the battery pack upper cover is provided with a plurality of inwards sunken pressing ribs. The energy storage device is provided with a lower box body with a containing cavity, a plurality of battery packs located in the containing cavity and the battery pack upper cover in the first embodiment, and the battery pack upper cover is matched with the lower box body to seal the containing cavity. The battery pack upper cover disclosed by the utility model can be formed at one time, is beneficial to standardized production, reduces the production and processing cost, and accelerates the product delivery speed; according to the energy storage device, the battery pack upper cover is used, so that the battery cells and other devices in the energy storage device can be protected, the protection and touch prevention effects are achieved, meanwhile, the IP67 sealing performance test is met, and the production and delivery requirements of energy storage device products are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage devices, and in particular relates to a battery pack upper cover and an energy storage device. Background Art

[0002] As competition in the energy storage market becomes increasingly fierce, the power of energy storage devices is gradually increasing, and the volume of battery pack covers is also gradually increasing, which is a challenge for traditional battery pack cover processing.

[0003] Traditional battery pack covers require sheet metal customization according to the size of different battery packs, and the final processing is completed through cutting, bending, welding, grinding and other processes. The production and processing cycle of battery pack covers is long, the production cost is high, and the IP67 sealing test of the battery pack covers produced in the end is not easy to pass, which cannot meet the product production and delivery requirements of energy storage devices.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a battery pack cover and an energy storage device, which can be formed in one go, which is conducive to standardized production, reduces production and processing costs, and speeds up product delivery.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A battery pack cover is an integrally formed structure, comprising a top plate, a first side plate and a second side plate oppositely disposed on two sides of the top plate, and a first end plate and a second end plate oppositely disposed on the other two sides of the top plate, wherein the battery pack cover is provided with a plurality of inwardly recessed ribs.

[0008] In one or more embodiments of the present invention, the top plate is provided with a plurality of first pressure ribs evenly distributed along the length direction, and two ends of the first pressure ribs extend to the first side plate and the second side plate respectively.

[0009] In one or more embodiments of the present invention, the width of the first pressed rib is 60 mm to 80 mm, and the depth of the first pressed rib is 8 mm to 12 mm; and / or,

[0010] The distance between two adjacent first ribs is 120 mm to 300 mm; and / or,

[0011] The number of the first pressing ribs is 2 to 10.

[0012] In one or more embodiments of the present invention, the first side panel and / or the second side panel is provided with a plurality of second compression ribs evenly distributed along the length direction, and two ends of the second compression ribs respectively extend to the sides of the top panel and the battery pack upper cover away from the top panel.

[0013] In one or more embodiments of the present invention, the width of the second pressed rib is 40 mm to 60 mm, and the depth of the second pressed rib is 1 mm to 5 mm; and / or,

[0014] The distance between two adjacent second ribs is 170 mm to 350 mm; and / or,

[0015] The second pressing rib is connected to the first pressing rib; and / or,

[0016] The first side plate and the second side plate are each provided with 2 to 10 second ribs.

[0017] In one or more embodiments of the present invention, the first end plate and / or the second end plate is provided with a plurality of third compression ribs evenly distributed along the width direction, and both ends of the third compression ribs respectively extend to the sides of the top plate and the battery pack upper cover away from the top plate.

[0018] In one or more embodiments of the present invention, the width of the third pressed rib is 20 mm to 40 mm, and the depth of the third pressed rib is 1 mm to 5 mm; and / or,

[0019] The distance between two adjacent third ribs is 70 mm to 130 mm; and / or,

[0020] The first end plate and / or the second end plate are provided with 1 to 5 third ribs; and / or,

[0021] The first end plate and / or the second end plate is provided with a maintenance opening, and the maintenance opening is arranged beside the third pressure rib.

[0022] In one or more embodiments of the present invention, the length of the battery pack upper cover is 1700 mm to 1800 mm, the width of the battery pack upper cover is 700 mm to 800 mm, and the height of the battery pack upper cover is 140 mm to 170 mm.

[0023] In one or more embodiments of the present invention, the draft angle of the battery pack cover is 1° to 5°; and / or,

[0024] The first side plate, the second side plate, the first end plate, and the second end plate are provided with an outwardly bent flange structure on the side away from the top plate, and the height of the flange structure is 4 mm to 8 mm; and / or,

[0025] The four corners of the battery pack upper cover are spherical surfaces, and the radius of the spherical surface is 8mm to 12mm.

[0026] Another specific embodiment of the present invention provides a technical solution as follows:

[0027] An energy storage device comprises a lower box body having a receiving cavity, a plurality of battery packs located in the receiving cavity, and a battery pack upper cover as described above, wherein the battery pack upper cover cooperates with the lower box body to close the receiving cavity.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] The utility model provides a battery pack cover and an energy storage device. The battery pack cover can be formed in one go through a stamping process, which is conducive to standardized production, reduces production and processing costs, and speeds up product delivery.

[0030] The energy storage device can protect the internal battery cells and other devices by using a battery pack cover, playing a role in protecting against touch. At the same time, it meets the IP67 sealing test and meets the production and delivery requirements of energy storage device products. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of the upper cover of the battery pack in the first embodiment of the present utility model;

[0033] Figure 2 It is a schematic cross-sectional structural diagram of the upper cover of the battery pack in the first embodiment of the utility model;

[0034] Figure 3 It is a left-side structural schematic diagram of the upper cover of the battery pack in the first embodiment of the utility model;

[0035] Figure 4 It is a right side structural schematic diagram of the upper cover of the battery pack in the first embodiment of the utility model;

[0036] Figure 5 for Figure 2 A magnified view of the local structure at point A. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings.

[0041] Embodiment 1:

[0042] Reference Figure 1 As shown, the battery pack cover in this embodiment is an integrally formed structure, and the battery pack cover includes a top plate 1, a first side plate 2 and a second side plate 3 arranged on both sides of the top plate 1, and a first end plate 4 and a second end plate 5 arranged on the other two sides of the top plate 1. A plurality of inwardly recessed ribs 6 are provided on the battery pack cover.

[0043] According to this design, the battery pack cover in this embodiment can be formed in one go through a stamping process, which is conducive to standardized production, reduces production and processing costs, and speeds up product delivery.

[0044] Among them, the battery pack cover can be stamped with DC06 stamping material with a thickness of 0.8mm, and the surface is electrophoretically treated. The thickness of the electrophoretic layer is 20μm to 46μm. The appearance of the battery pack cover is finally bright black. The battery pack cover passes the neutral salt spray test and can achieve 720H ​​without red rust.

[0045] Specifically, the length of the battery pack cover in this embodiment is 1700mm to 1800mm, the width of the battery pack cover is 700mm to 800mm, and the height of the battery pack cover is 140mm to 170mm. Exemplarily, the length of the battery pack cover in this embodiment is 1770mm, the width is 730mm, and the height is 157.5mm. Of course, the present application is not limited to this, and the length of the battery pack cover can also be 1700mm, or 1800mm, or any value between 1700mm and 1800mm. The width of the battery pack cover can also be 700mm, or 800mm, or any value between 700mm and 800mm. The height of the battery pack cover can also be 140mm, or 170mm, or any value between 140mm and 170mm. Among them, the processing of the battery pack cover in the height direction is completed by a stretching process.

[0046] In order to make the battery pack cover smoothly separate from the processing equipment, refer to Figure 2 Shown and Figure 5 As shown, the draft angle α of the battery pack cover in this embodiment is 1° to 5°. Exemplarily, the draft angle α of the battery pack cover is 1.5°. The present application is not limited thereto, and the draft angle of the battery pack cover can also be 1°, or 5°, or any value between 1° and 5°.

[0047] Optionally, to improve the strength of the battery pack cover, refer to Figure 1 As shown, the top plate 1 in this embodiment is provided with a plurality of first ribs 61 evenly distributed along the length direction, and the two ends of the first ribs 61 extend to the first side plate 2 and the second side plate 3 respectively. According to this design, the strength of the top plate 1 can be improved and the deformation of the top plate 1 caused by material rebound can be avoided. Among them, the first ribs 61 can be completed by a stretching process. The stretching process usually refers to the process of obtaining a hollow part from a flat material by a method, which is mainly completed by a punch or a die.

[0048] Specifically, the width of the first press rib 61 in the present embodiment is 60 mm to 80 mm, and the depth of the first press rib 61 is 8 mm to 12 mm. Exemplarily, the width of the first press rib 61 in the present embodiment is 72.4 mm, and the depth of the first press rib 61 is 10 mm. Of course, the present application is not limited thereto, and the width of the first press rib 61 can also be 60 mm, or 80 mm, or any value between 60 mm and 80 mm. The depth of the first press rib 61 can also be 8 mm, or 12 mm, or any value between 8 mm and 12 mm.

[0049] The distance between two adjacent first pressing ribs 61 is 120 mm to 300 mm. For example, the distance between two adjacent first pressing ribs 61 in this embodiment is 211.9 mm. Of course, the present application is not limited thereto, and the distance between two adjacent first pressing ribs 61 is 120 mm, or 300 mm, or any value between 120 mm and 300 mm.

[0050] In this embodiment, the number of the first pressing ribs 61 is 2 to 10. Figure 1 As shown, the number of the first compression ribs 61 on the top plate 1 is 5. Of course, the present application is not limited thereto. The number of the first compression ribs 61 on the top plate 1 can also be 2, or 10, or any value between 2 and 10.

[0051] Optionally, to improve the strength of the battery pack cover, refer to Figure 1 As shown, in this embodiment, the first side plate 2 and the second side plate 3 are provided with a plurality of second ribs 62 evenly distributed along the length direction, and the two ends of the second ribs 62 extend to the top plate 1 and the side of the battery pack cover away from the top plate 1. According to this design, the strength of the first side plate 2 and the second side plate 3 can be improved, and the deformation of the first side plate 2 and the second side plate 3 caused by material rebound can be avoided. Of course, the present application is not limited to this. When only the first side plate 2 or the second side plate 3 is provided with the second rib 62, the strength of the entire battery pack cover can also be improved to a certain extent.

[0052] Specifically, the width of the second rib 62 in the present embodiment is 40 mm to 60 mm, and the depth of the second rib 62 is 1 mm to 5 mm. Exemplarily, the width of the second rib 62 in the present embodiment is 56.4 mm, and the depth of the second rib 62 is 2 mm. Of course, the present application is not limited thereto, and the width of the second rib 62 can also be 40 mm, or 60 mm, or any value between 40 mm and 60 mm. The depth of the second rib 62 can also be 1 mm, or 5 mm, or any value between 1 mm and 5 mm.

[0053] The distance between two adjacent second pressing ribs 62 is 170 mm to 350 mm. For example, the distance between two adjacent second pressing ribs 62 in this embodiment is 246.4 mm. Of course, the present application is not limited thereto, and the distance between two adjacent second pressing ribs 62 is 170 mm, or 350 mm, or any value between 170 mm and 350 mm.

[0054] Preferably, refer to Figure 1 As shown, the second pressure rib 62 in this embodiment is connected to the first pressure rib 61, which can further improve the overall strength of the battery pack cover.

[0055] In this embodiment, 2 to 10 second pressing ribs 62 are disposed on the first side plate 2 and the second side plate 3. Figure 1 As shown, illustratively, five second compression ribs 62 are provided on the first side panel 2 and the second side panel 3. Of course, the present application is not limited to this. The number of the second compression ribs 62 on the first side panel 2 and the second side panel 3 can also be 2, or 10, or any value between 2 and 10.

[0056] Optionally, to improve the strength of the battery pack cover, refer to Figure 1 As shown, in this embodiment, the first end plate 4 and the second end plate 5 are provided with a plurality of third ribs 63 evenly distributed along the width direction, and the two ends of the third ribs 63 extend to the top plate 1 and the side of the battery pack cover away from the top plate 1. According to this design, the strength of the first end plate 4 and the second end plate 5 can be improved, and the deformation of the first end plate 4 and the second end plate 5 caused by material rebound can be avoided. Of course, the present application is not limited to this. When only the third ribs 63 are provided on the first end plate 4 or the second end plate 5, the strength of the entire battery pack cover can also be improved to a certain extent.

[0057] Specifically, the width of the third press rib 63 in this embodiment is 20 mm to 40 mm, and the depth of the third press rib 63 is 1 mm to 5 mm. Exemplarily, the width of the third press rib 63 in this embodiment is 32 mm, and the depth of the third press rib 63 is 2 mm. Of course, the present application is not limited thereto, and the width of the third press rib 63 can also be 20 mm, or 40 mm, or any value between 20 mm and 40 mm. The depth of the third press rib 63 can also be 1 mm, or 5 mm, or any value between 1 mm and 5 mm.

[0058] The distance between two adjacent third pressing ribs 63 is 70 mm to 130 mm. For example, the distance between two adjacent third pressing ribs 63 in this embodiment is 103.3 mm. Of course, the present application is not limited thereto, and the distance between two adjacent third pressing ribs 63 is 70 mm, or 130 mm, or any value between 70 mm and 130 mm.

[0059] Reference Figure 3 , Figure 4As shown, in this embodiment, two third ribs 63 are provided on the first end plate 4, and three third ribs 63 are provided on the second end plate 5. Preferably, in order to facilitate the maintenance of the device inside the energy storage device receiving chamber, a maintenance port 41 is provided on the first end plate 4 in this embodiment, and the maintenance port 41 is provided beside the third rib 63. An explosion-proof valve can be installed on the second end plate 5. Of course, the present application is not limited to this, and the number of third ribs 63 on the first end plate 4 and the second end plate 5 can also be 1, or 5, or 1 to 5. Among them, a sealing cover is provided on the maintenance port 41. In order to facilitate the installation of the sealing cover, a first mounting hole 42 is provided around the maintenance port 41. In order to facilitate the installation of the explosion-proof valve, a second mounting hole 51 is provided on the second end plate 5. The first mounting hole 42 and the second mounting hole 51 are processed by a punching process. Punching is a process of punching and blanking holes of various shapes with blanking parts or other formed parts as process parts.

[0060] Preferably, refer to Figure 1 Combined with Figure 5 As shown, the first side plate 2, the second side plate 3, the first end plate 4, and the second end plate 5 in this embodiment are provided with a flange structure 7 bent outward on the side away from the top plate 1, and the height of the flange structure 7 is 4mm to 8mm. Exemplarily, the height of the flange structure 7 is 6.4mm. Of course, the present application is not limited to this, and the height of the flange structure 7 can also be 4mm, or 8mm, or any value between 4mm and 8mm. Among them, the flange structure 7 is processed by a flanging operation, and the flanging operation is a stamping operation that turns the outer edge of a blank or a semi-finished product or the edge of a hole along a certain curve into an upright edge.

[0061] Specifically, refer to Figure 5 As shown, the flanging structure 7 in this embodiment includes a first main body portion 71 connected to the first side plate 2 or the second side plate 3 or the first end plate 4 or the second end plate 5 and bent outward, and a second main body portion 72 connected to the first main body portion 71 and bent upward. The height of the second main body portion 72 is 4mm to 8mm. A third mounting hole 711 is provided on the first main body portion 71 to facilitate the fixed installation of the upper cover of the battery pack and the lower box body in Example 2. The second main body portion 72 can strengthen the strength of the first main body portion 71 to prevent the first main body portion 71 from deformation and insufficient strength, thereby affecting the airtight effect of the energy storage device. The third mounting hole 711 is completed by punching operation.

[0062] Preferably, refer to Figure 1 As shown, the four corners of the upper cover of the battery pack in this embodiment are spherical surfaces 8, and the radius of the spherical surface 8 is 8mm to 12mm. According to this design, the upper cover of the battery pack can be excessively smooth. Exemplarily, the radius of the spherical surface 8 is 10.8mm. Of course, the present application is not limited to this, and the radius of the spherical surface 8 can also be 8mm, or 12mm, or any value between 8mm and 12mm.

[0063] Embodiment 2:

[0064] The energy storage device (not shown) in this embodiment includes a lower box body with a receiving cavity, a plurality of battery packs located in the receiving cavity, and a battery pack upper cover as in the first embodiment, and the battery pack upper cover cooperates with the lower box body to close the receiving cavity. According to this design, the battery pack upper cover and the lower box body can be fixedly installed by screws, bolts and other fixings, thereby closing the receiving cavity to protect the internal battery cells and other devices, and play a role in protecting against touch, while meeting the IP67 sealing test and meeting the production and delivery requirements of energy storage device products.

[0065] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0066] The utility model provides a battery pack cover and an energy storage device. The battery pack cover can be formed in one go through a stamping process, which is conducive to standardized production, reduces production and processing costs, and speeds up product delivery.

[0067] The energy storage device can protect the internal battery cells and other devices by using a battery pack cover, playing a role in protecting against touch. At the same time, it meets the IP67 sealing test and meets the production and delivery requirements of energy storage device products.

[0068] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0069] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A battery pack cover, characterized in that: The battery pack cover is an integrally formed structure, comprising a top plate, a first side plate and a second side plate oppositely arranged on two sides of the top plate, and a first end plate and a second end plate oppositely arranged on the other two sides of the top plate. The battery pack cover is provided with a plurality of inwardly recessed ribs.

2. The battery pack cover according to claim 1, characterized in that: The top plate is provided with a plurality of first pressing ribs evenly distributed along the length direction, and two ends of the first pressing ribs extend to the first side plate and the second side plate respectively.

3. The battery pack cover according to claim 2, characterized in that: The width of the first pressed rib is 60 mm to 80 mm, and the depth of the first pressed rib is 8 mm to 12 mm; and / or, The distance between two adjacent first ribs is 120 mm to 300 mm; and / or, The number of the first pressing ribs is 2 to 10.

4. The battery pack cover according to claim 2, characterized in that: The first side plate and / or the second side plate are provided with a plurality of second ribs evenly distributed along the length direction, and two ends of the second ribs extend to the sides of the top plate and the battery pack upper cover away from the top plate respectively.

5. The battery pack cover according to claim 4, characterized in that: The width of the second pressed rib is 40 mm to 60 mm, and the depth of the second pressed rib is 1 mm to 5 mm; and / or, The distance between two adjacent second ribs is 170 mm to 350 mm; and / or, The second pressing rib is connected to the first pressing rib; and / or, The first side plate and the second side plate are each provided with 2 to 10 second ribs.

6. The battery pack cover according to claim 1, characterized in that: The first end plate and / or the second end plate are provided with a plurality of third ribs evenly distributed along the width direction, and two ends of the third ribs extend to the sides of the top plate and the battery pack upper cover away from the top plate respectively.

7. The battery pack cover according to claim 6, characterized in that: The width of the third pressed rib is 20 mm to 40 mm, and the depth of the third pressed rib is 1 mm to 5 mm; and / or, The distance between two adjacent third ribs is 70 mm to 130 mm; and / or, The first end plate and / or the second end plate are provided with 1 to 5 third ribs; and / or, The first end plate and / or the second end plate is provided with a maintenance opening, and the maintenance opening is arranged beside the third pressure rib.

8. The battery pack cover according to claim 1, characterized in that: The length of the battery pack upper cover is 1700 mm to 1800 mm, the width of the battery pack upper cover is 700 mm to 800 mm, and the height of the battery pack upper cover is 140 mm to 170 mm.

9. The battery pack cover according to claim 1, characterized in that: The draft angle of the battery pack cover is 1° to 5°; and / or, The first side plate, the second side plate, the first end plate, and the second end plate are provided with an outwardly bent flange structure on the side away from the top plate, and the height of the flange structure is 4 mm to 8 mm; and / or, The four corners of the battery pack upper cover are spherical surfaces, and the radius of the spherical surface is 8mm to 12mm.

10. An energy storage device, characterized in that: The energy storage device comprises a lower box body having a receiving cavity, a plurality of battery packs located in the receiving cavity, and a battery pack upper cover as described in any one of claims 1 to 9, wherein the battery pack upper cover cooperates with the lower box body to close the receiving cavity.

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