PACK box body structure

Abstract

The utility model relates to the technical field of battery energy storage, and discloses a PACK box body structure. The PACK box body structure comprises a bottom frame, a metal plate side wall, a front panel and an upper cover, the bottom frame comprises a rectangular frame, a liquid cooling plate and a water nozzle sealing piece, the rectangular frame is formed through welding, the liquid cooling plate is assembled on the rectangular frame, the metal plate side wall is provided with a waterproof eave, the metal plate side wall and the front panel form a rectangular frame body in a surrounding mode, and the waterproof eave is arranged on the rectangular frame. And the upper cover covers the rectangular frame body to form a sealed box body. According to the PACK box body structure disclosed by the utility model, the rectangular frame is formed by welding, so that the splicing workload of scattered parts can be saved to the maximum extent, and the risk caused by untight splicing is reduced; rainwater and the like flow to the outer side of the box body through the waterproof eaves of the metal plate side wall, so that the use of rubber sealing elements is reduced, risks caused by aging of the sealing elements are prevented, the reliability and stability of the battery pack PACK are ensured, the service life of a product is prolonged, and the production and manufacturing cost is saved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of battery energy storage, and in particular to a PACK box structure. Background Art

[0002] With the explosive growth of installed energy storage capacity in recent years, new energy storage technologies are becoming increasingly critical for new power and energy systems. Battery energy storage modules, with their high energy density, flexible deployment, and adaptability to diverse application scenarios, have gained a dominant position in the energy storage field and are widely used.

[0003] The battery modules of a battery pack (PACK) are generally installed in a box. The working performance and safety of the battery pack are closely related to its operating environment. If dust and rainwater in the air enter the battery box, it will cause the performance of the battery module to deteriorate or even short-circuit, causing safety problems.

[0004] The inventors of the present application have discovered that, in order to seal the box, a complex structural design or a large number of sealing mechanisms are usually adopted to meet the protection requirements of battery operation, which increases the manufacturing and use costs of the box and reduces the manufacturability of the box. Utility Model Content

[0005] The purpose of the present invention is to provide a PACK box structure to solve the problems in the above-mentioned background technology.

[0006] The embodiment of the utility model provides a PACK box structure, comprising: a bottom frame, sheet metal side panels, a front panel and an upper cover;

[0007] The bottom frame includes: a rectangular frame, a liquid cooling plate and a water nozzle seal;

[0008] The rectangular frame is formed by welding, the liquid cooling plate is assembled on the rectangular frame, and the water nozzle seal is provided on the rectangular frame and passed through the water inlet and outlet nozzles of the liquid cooling plate, so as to seal the rectangular frame and the water inlet and outlet nozzles of the liquid cooling plate;

[0009] The sheet metal side is provided with a waterproof eaves;

[0010] The sheet metal side panels include: a left sheet metal panel, a right sheet metal panel and a rear sheet metal panel.

[0011] The left sheet metal enclosure, the right sheet metal enclosure, the rear sheet metal enclosure and the front panel form a rectangular frame, which is arranged on the rectangular frame;

[0012] The upper cover is covered on the rectangular frame. The upper cover, the sheet metal side panels, the front panel and the bottom frame form a sealed box for placing the battery module of the PACK. The waterproof eaves are used to prevent rainwater from entering the sealed box.

[0013] Based on the above scheme, it can be seen that the PACK box structure of the present invention is formed by setting a bottom frame, sheet metal side panels, a front panel and an upper cover. The bottom frame includes: a rectangular frame, a liquid cooling plate and a water nozzle seal. The rectangular frame is formed by welding. The liquid cooling plate is set on the rectangular frame. The water nozzle seal seals the rectangular frame and the inlet and outlet water nozzles of the liquid cooling plate. The sheet metal side panels are provided with waterproof eaves. The sheet metal side panels and the front panel form a rectangular frame, which is set on the rectangular frame. The upper cover is covered on the rectangular frame. The upper cover, sheet metal side panels, front panel and bottom frame form a sealed box. In the PACK box structure of the present invention, the rectangular frame of the bottom frame is formed into one piece by welding, which can maximize the savings in the workload of splicing scattered parts and reduce the risk of water leakage caused by loose splicing of scattered parts; the water nozzle seal achieves the sealing between the inlet and outlet water nozzles of the liquid cooling plate and the rectangular frame; the waterproof eaves of the sheet metal side panels allow rainwater to flow to the outside of the box, reducing the use of rubber seals and preventing the risk of leakage caused by aging of seals. The box effectively protects the internal energy storage module battery pack, ensuring the reliability and stability of the battery pack PACK, extending the product life, and saving production and manufacturing costs.

[0014] In a feasible solution, the rectangular frame includes: a sunken inner frame and an outer frame;

[0015] The sunken inner frame is located on the inner side of the outer frame, the liquid cooling plate is arranged on the sunken inner frame, and a sealant is filled between the liquid cooling plate and the outer frame.

[0016] In a feasible solution, the sunken inner frame is provided with a connecting hole;

[0017] The liquid cooling plate is provided with a mounting hole, so that the sunken inner frame and the liquid cooling plate are connected by rivets.

[0018] In a feasible solution, the waterproof eaves includes: an upper waterproof eaves and a lower waterproof eaves;

[0019] The upper waterproof eaves and the lower waterproof eaves are arranged at the top and bottom ends of the sheet metal side enclosure, and are used to abut against the upper cover and the bottom frame respectively.

[0020] In a feasible solution, the upper waterproof eaves and the lower waterproof eaves each include: a horizontal portion and a vertical portion;

[0021] The horizontal portion and the vertical portion are arranged perpendicularly and are formed by integrally bending each sheet metal enclosure.

[0022] In a feasible solution, the upper cover is provided with a protruding edge;

[0023] The top and bottom ends of the sheet metal side surround are both provided with extension plates, and the extension plates and the horizontal portion form limiting steps. The extension plates are used to be inserted into the bottom frame and the protruding edge.

[0024] In a feasible solution, sealed slots are provided on both sides of the front panel for inserting the left sheet metal enclosure and the right sheet metal enclosure.

[0025] In a feasible solution, the sealing groove is filled with sealant.

[0026] In a feasible solution, the upper cover is a plastic-molded part and is in the shape of an umbrella with a high middle portion and low surrounding portions.

[0027] In a feasible solution, the faucet sealing component is made of EPDM rubber.

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

[0029] 1. The rectangular frame is formed by welding, which can save the workload of splicing scattered parts to the maximum extent and reduce the risk of water leakage caused by loose splicing of scattered parts.

[0030] 2. The liquid cooling plate is set on the sunken inner frame, and the space between it and the outer frame is filled with sealant, making the installation of the liquid cooling plate simple and quick.

[0031] 3. The waterproof eaves on the three sides of the box are formed by bending the sheet metal enclosure in one piece. The structure is simple, which reduces the production and manufacturing costs. It can block rain and dust from all directions from entering the box, and also minimize the use of seals and fixing bolts.

[0032] 4. The front panel and the sheet metal enclosure are connected and sealed through a sealing slot, which is easy to install and has reliable sealing.

[0033] 5. The upper cover is formed by vacuum forming, and the overall shape is an umbrella with a high middle and low sides, which effectively prevents rainwater from gathering on the top of the upper cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1Schematic diagram of the PACK box structure in an embodiment of the present utility model;

[0036] Figure 2 This is a schematic diagram of the PACK box structure in another embodiment of the present invention from another angle;

[0037] Figure 3 In the embodiment of the present utility model Figure 2 A partial enlarged view of the

[0038] Figure 4 This is an exploded schematic diagram of the PACK box structure in an embodiment of the present utility model;

[0039] Figure 5 It is a partial cross-sectional schematic diagram of the PACK box structure in an embodiment of the present utility model.

[0040] Numbers in the figure:

[0041] 1. Bottom frame; 11. Rectangular frame; 111. Sunken inner frame; 112. Outer frame; 12. Liquid cooling plate; 13. Water nozzle seal; 14. Water inlet and outlet nozzle; 2. Sheet metal side panel; 201. Left sheet metal enclosure; 202. Right sheet metal enclosure; 203. Rear sheet metal enclosure; 21. Waterproof eaves; 2101. Upper waterproof eaves; 2102. Lower waterproof eaves; 211. Horizontal part; 212. Vertical part; 22. Extension plate; 3. Front panel; 31. Sealing slot; 4. Upper cover; 41. Protruding edging; 5. Battery module. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0045] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0046] As described in the background technology of this application, the battery modules of the energy storage battery pack PACK are generally arranged in a box. The working performance and safety of the battery pack are closely related to its operating environment. If dust and rainwater in the air enter the battery box, it will cause the performance of the battery module to decline or even short-circuit, causing safety problems.

[0047] The inventors of the present application have discovered that, in order to seal the box, a complex structural design or a large number of sealing mechanisms are usually adopted to meet the protection requirements of battery operation, which increases the manufacturing and use costs of the box and reduces the manufacturability of the box.

[0048] In order to solve the above problems, the author of the present application has proposed the technical solution of the present application, and the specific embodiments are as follows:

[0049] Figure 1 This is a schematic diagram of the PACK box structure in an embodiment of the present utility model. Figure 2 This is a schematic diagram of the PACK box structure in another angle in an embodiment of the present invention. Figure 3 In the embodiment of the present utility model Figure 2 A partial enlarged view of Figure 4 This is an exploded schematic diagram of the PACK box structure in an embodiment of the present utility model. Figure 5 It is a partial cross-sectional schematic diagram of the PACK box structure in an embodiment of the present utility model.

[0050] like Figures 1 to 5 As shown, the PACK box structure of this embodiment includes: a bottom frame 1, sheet metal side panels 2, a front panel 3 and an upper cover 4.

[0051] The bottom frame 1 is rectangular in shape and includes a rectangular frame 11 , a liquid cooling plate 12 and a water nozzle sealing member 13 .

[0052] The rectangular frame 11 of the bottom frame 1 is formed by welding parts to form an integrated structure, which can maximize the savings in the workload of splicing scattered parts and reduce the risk of water leakage caused by loose splicing of scattered parts.

[0053] The liquid cooling plate 12 is assembled on the rectangular frame 11, sealing the bottom surface of the rectangular frame 11. The inlet and outlet nozzles 14 of the liquid cooling plate 12 are installed through the side walls of the rectangular frame 11. The nozzle seal 13 is installed on the rectangular frame 11 and penetrates the inlet and outlet nozzles 14 of the liquid cooling plate 12, thereby sealing the rectangular frame 11 and the inlet and outlet nozzles 14 of the liquid cooling plate 12. The inlet and outlet nozzles 14 of the liquid cooling plate 12 are connected to the external circulating cooling water.

[0054] The sheet metal side panel 2 is provided with a waterproof eave 21 .

[0055] The sheet metal side panel 2 includes a left sheet metal enclosure 201 , a right sheet metal enclosure 202 and a rear sheet metal enclosure 203 . The sheet metal side panel 2 is provided with a waterproof eave 21 on each of the left sheet metal enclosure 201 , the right sheet metal enclosure 202 and the rear sheet metal enclosure 203 .

[0056] The front panel 3 is an integrated panel structure.

[0057] The left sheet metal enclosure 201 , the right sheet metal enclosure 202 and the rear sheet metal enclosure 203 of the sheet metal side enclosure 2 and the front panel 3 form a sealed rectangular frame, which is set on the rectangular frame 11 of the bottom frame 1 and sealed to the rectangular frame 11 .

[0058] The upper cover 4 is covered on the rectangular frame formed by the sheet metal side panels 2 and the front panel 3. The upper cover 4, the front panel 3, the sheet metal side panels 2 and the bottom frame 1 form a square sealed box. The battery module 5 of the battery pack (PACK) is arranged in the sealed box and placed on the liquid cooling plate 12 of the bottom frame 1. The battery cells of the PACK are cooled by circulating water. The waterproof eaves 21 of the sheet metal side panels 2 protrude from the side walls of the box to prevent rainwater and the like from entering the sealed box. The protection level of the box can reach IP55.

[0059] It is not difficult to find out from the above content that the PACK box structure of this embodiment is provided with a bottom frame, sheet metal side panels, a front panel and an upper cover. The bottom frame includes: a rectangular frame, a liquid cooling plate and a water nozzle seal. The rectangular frame is formed by welding. The liquid cooling plate is provided on the rectangular frame. The water nozzle seal seals the rectangular frame and the inlet and outlet water nozzles of the liquid cooling plate. The sheet metal side panels are provided with waterproof eaves. The sheet metal side panels and the front panel form a rectangular frame body, which is provided on the rectangular frame. The upper cover is covered on the rectangular frame body. The upper cover, sheet metal side panels, front panel and bottom frame form a sealed box body. The PACK box structure of this embodiment adopts a welding method to form an integrated structure in the rectangular frame of the bottom frame, which can maximize the savings in the workload of splicing scattered parts and reduce the risk of water leakage caused by loose splicing of scattered parts; the water nozzle seal is used to achieve sealing between the inlet and outlet water nozzles of the liquid cooling plate and the rectangular frame; the waterproof eaves of the sheet metal side are used to allow rainwater to flow to the outside of the box, reducing the use of rubber seals and preventing the risk of leakage caused by aging of seals, ensuring the reliability and stability of the battery pack PACK, improving the service life of the product, and saving production and manufacturing costs.

[0060] Optionally, in the PACK box structure in this embodiment, the rectangular frame 11 of the bottom frame 1 includes a sunken inner frame 111 and an outer frame 112 .

[0061] The sunken inner frame 111 is located inside the outer frame 112, and the liquid cooling plate 12 is mounted on the sunken inner frame 111, providing support for the liquid cooling plate 12. The gap between the liquid cooling plate 12 and the inner wall of the outer frame 112 is sealed with sealant using an automatic sealer to improve the assembly efficiency of the liquid cooling plate 12.

[0062] Furthermore, in the PACK box structure of this embodiment, connection holes (not shown) are provided around the sunken inner frame 111 .

[0063] The liquid cooling plate 12 is provided with mounting holes around its perimeter, and the connection holes of the sunken inner frame 111 correspond to the mounting holes of the liquid cooling plate 12. Rivets are inserted through the connection holes of the sunken inner frame 111 and the corresponding mounting holes of the liquid cooling plate 12, so that the sunken inner frame 111 and the liquid cooling plate 12 are connected and fixed by rivets, ensuring that the liquid cooling plate 12 is securely installed.

[0064] Furthermore, in the PACK box structure in this embodiment, the waterproof eaves 21 include: an upper waterproof eaves 2101 and a lower waterproof eaves 2102 .

[0065] The upper waterproof eaves 2101 and the lower waterproof eaves 2102 are respectively arranged at the top and bottom ends of the sheet metal side wall 2. The upper waterproof eaves 2101 and the lower waterproof eaves 2102 are used to respectively abut against the upper cover 4 and the bottom frame 1 to prevent rainwater from entering the box.

[0066] Further, such as Figure 5As shown, in the PACK box structure in this embodiment, the waterproof eaves 21 are bent, including: a horizontal part 211 and a vertical part 212, that is, the upper waterproof eaves 2101 and the lower waterproof eaves 2102 both include: a horizontal part 211 and a vertical part 212.

[0067] The horizontal portion 211 and the vertical portion 212 of the waterproof eaves 21 are arranged perpendicular to each other. The waterproof eaves 21 are formed by integrally bending the sheet metal enclosures of the sheet metal side enclosure 2, that is, the waterproof eaves 21 and the sheet metal enclosures are an integrated structure, which is convenient for manufacturing and processing.

[0068] The horizontal portion 211 of the upper waterproof eaves 2101 is in contact with the bottom surface of the side of the upper cover 4, and the horizontal portion 211 and the vertical portion 212 of the lower waterproof eaves 2102 wrap the outer edge of the outer frame 112 of the rectangular frame 11, so that rainwater flows along the waterproof eaves structure to the outside of the box body and will not enter the sealed box body, thereby ensuring the safe and reliable use of the battery pack.

[0069] Furthermore, in the PACK box structure of this embodiment, the sheet metal side panels 2 are provided with extension plates 22 at the top and bottom ends, and the extension plates 22 and the horizontal portion 211 of the waterproof eaves 21 form limiting steps.

[0070] The bottom of the upper cover 4 is provided with a protruding edge 41 around it.

[0071] During assembly, the bottom extension plate 22 of the sheet metal side panel 2 is inserted into the interior of the outer frame 112, with the lower waterproof eaves 2102 wrapping around the outer frame 112. The top extension plate 22 of the sheet metal side panel 2 is inserted into the interior of the protruding edge 41 of the upper cover 4. The top extension plate 22 is secured to the protruding edge 41 of the upper cover 4 using bolts or other fasteners. This waterproof eaves structure minimizes the use of rubber seals and assembly bolts, avoiding the risk of leakage due to seal aging and improving assembly efficiency.

[0072] Optionally, in the PACK box structure of this embodiment, sealing slots 31 are provided on both sides of the back of the front panel 3, and the ends of the left sheet metal enclosure 2101 and the right sheet metal enclosure 2102 are respectively inserted into the sealing slots 31 of the front panel 3, so as to facilitate the connection and fixation of the sheet metal side enclosure 2 and the front panel 3 and achieve sealing.

[0073] Furthermore, in the PACK box structure of this embodiment, the sealing groove 31 of the front panel 3 is filled with sealant, so that the sheet metal side panel 2 and the front panel 3 are better sealed.

[0074] Optionally, in this embodiment, the PACK box structure features a top cover 4 formed from a blister-molded component, shaped like an umbrella, with a high center and lower sides. The slope of the top cover 4 effectively directs rainwater, preventing it from collecting due to top deformation. The top cover 4 cooperates with the upper waterproof eaves 2101 of the sheet metal side panels 2, utilizing the inherent bending of the sheet metal to increase the contact area between the top cover 4 and the sheet metal side panels 2, extending the path for rainwater and foreign matter to enter the box and redirecting their entry. This self-cooperation ensures an effective seal within the box.

[0075] Furthermore, in the PACK box structure of this embodiment, the material of the faucet seal 13 is ethylene propylene diene monomer (EPDM), which has excellent properties such as low density, high filling, aging resistance, and corrosion resistance.

[0076] In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium.

[0077] Furthermore, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0078] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A PACK box structure, characterized in that: include: bottom frame, sheet metal side panels, front panel and top cover; The bottom frame includes: a rectangular frame, a liquid cooling plate and a water nozzle seal; The rectangular frame is formed by welding, the liquid cooling plate is assembled on the rectangular frame, and the water nozzle seal is provided on the rectangular frame and passed through the water inlet and outlet nozzles of the liquid cooling plate, so as to seal the rectangular frame and the water inlet and outlet nozzles of the liquid cooling plate; The sheet metal side is provided with a waterproof eaves; The sheet metal side panels include: a left sheet metal panel, a right sheet metal panel and a rear sheet metal panel. The left sheet metal enclosure, the right sheet metal enclosure, the rear sheet metal enclosure and the front panel form a rectangular frame, which is arranged on the rectangular frame; The upper cover is covered on the rectangular frame. The upper cover, the sheet metal side panels, the front panel and the bottom frame form a sealed box for placing the battery module of the PACK. The waterproof eaves are used to prevent rainwater from entering the sealed box.

2. The PACK box structure according to claim 1, characterized in that: The rectangular frame includes: a sunken inner frame and an outer frame; The sunken inner frame is located on the inner side of the outer frame, the liquid cooling plate is arranged on the sunken inner frame, and a sealant is filled between the liquid cooling plate and the outer frame.

3. The PACK box structure according to claim 2, characterized in that: The sunken inner frame is provided with a connection hole; The liquid cooling plate is provided with a mounting hole, so that the sunken inner frame and the liquid cooling plate are connected by rivets.

4. The PACK box structure according to claim 1, characterized in that: The waterproof eaves include: an upper waterproof eaves and a lower waterproof eaves; The upper waterproof eaves and the lower waterproof eaves are arranged at the top and bottom ends of the sheet metal side enclosure, and are used to abut against the upper cover and the bottom frame respectively.

5. The PACK box structure according to claim 4, characterized in that: The upper waterproof eaves and the lower waterproof eaves each include: a horizontal portion and a vertical portion; The horizontal portion and the vertical portion are arranged perpendicularly and are formed by integrally bending each sheet metal enclosure.

6. The PACK box structure according to claim 5, characterized in that: The upper cover is provided with a protruding edge; The top and bottom ends of the sheet metal side surround are both provided with extension plates, and the extension plates and the horizontal portion form limiting steps. The extension plates are used to be inserted into the bottom frame and the protruding edge.

7. The PACK box structure according to claim 1, characterized in that: Sealed slots are provided on both sides of the front panel for inserting the left sheet metal enclosure and the right sheet metal enclosure.

8. The PACK box structure according to claim 7, characterized in that: The sealing groove is filled with sealant.

9. The PACK box structure according to claim 1, characterized in that: The upper cover is a plastic-blister-molded part and is in an umbrella shape with a high middle portion and low surrounding portions.

10. The PACK box structure according to any one of claims 1 to 9, characterized in that: The material of the faucet sealing component is EPDM rubber.

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