Shell device and energy storage equipment

Abstract

The utility model provides a shell device which is applied to energy storage equipment, the energy storage equipment comprises a battery cell and an inversion module, and the shell device comprises an inner shell and an outer shell. The inner shell accommodates the battery cell inside and fixes the inversion module outside, and reinforcing rib structures are distributed on the surface of the inner shell. The inner shell is contained in the outer shell, the outer shell comprises a bottom shell, a top shell and a first side shell, the inner shell is arranged on the bottom shell, the top shell is fixedly connected to the top of the inner shell, the first side shell is fixedly connected to the side portion of the inner shell, the top of the inner shell and the inner wall of the top shell jointly define a containing cavity, and the inversion module is contained in the containing cavity. When the shell device is assembled, as the inner shell is used as an outer shell of the battery cell, the inner shell is necessarily required to have higher structural strength, the bottom shell, the top shell, the first side shell and the inversion module are directly mounted in the inner shell, and the structural strength of the outer shell and the structural strength of the inversion module in the accommodating cavity can be improved.

Description

Technical Field

[0001] The present application relates to the field of shell design of energy storage equipment, and specifically to a shell device and energy storage equipment. Background Art

[0002] At present, portable energy storage devices have main parts such as a casing, a battery pack and an inverter module. When assembling, they usually follow the top-down or left-to-right assembly rules. For example, the side shell is first installed on the top shell, and then the bottom shell is installed on the side shell. However, this assembly method has the problem of loose assembly, resulting in low overall structural strength of the energy storage device. Utility Model Content

[0003] In view of this, the present application provides a housing device and an energy storage device capable of improving structural strength.

[0004] In one embodiment of the present application, a shell device is provided, which is applied to an energy storage device, wherein the energy storage device includes a battery cell and an inverter module, and the shell device includes an inner shell and an outer shell. The inner shell is configured to accommodate the battery cell inside and fix the inverter module outside, and a reinforcing rib structure is distributed on the surface of the inner shell. The inner shell is accommodated in the outer shell, and the outer shell includes a bottom shell, a top shell and a first side shell. The inner shell is arranged on the bottom shell, the top shell is fixedly connected to the top of the inner shell, and the first side shell is fixedly connected to the side of the inner shell. The top of the inner shell and the inner wall of the top shell jointly define a receiving cavity, and the receiving cavity is configured to accommodate the inverter module.

[0005] When assembling the shell device provided by the present application, the bottom shell, top shell, first side shell, and inverter module are all uniformly installed in the inner shell, making the structural integrity stronger, thereby improving the overall structural strength, and the inner shell improves its own strength through the reinforcing rib structure, thereby further ensuring the overall structural strength of the energy storage device. In addition, the shell device is installed in the inner shell through the bottom shell, top shell, and first side shell, which also improves the convenience of disassembly. When the user needs to replace the bottom shell, top shell or first side shell, it only needs to be disassembled from the inner shell, without the need to disassemble other components, so that the bottom shell, top shell and first side shell form an independent structural module, thereby improving the modular modification potential of the shell device, so that the user can easily replace the bottom shell, top shell or first side shell according to needs.

[0006] In some embodiments, the outer shell further includes a second side shell, the second side shell is installed on at least one of the bottom shell or the top shell or the first side shell, and the second side shell can be selectively installed on the side of the inner shell.

[0007] In some embodiments, the outer shell includes two first side shells and two second side shells, the two first side shells are respectively arranged on two opposite sides of the inner shell, and the two second side shells are respectively arranged on the other opposite sides of the inner shell, and the bottom shell, the top shell, the two first side shells and the two second side shells surround the inner shell.

[0008] In some embodiments, the shell device also includes a support member, which is disposed in the inner shell and located in the accommodating cavity. The support member divides the accommodating cavity into an upper cavity and a lower cavity. The upper cavity is formed between the support member and the top shell, and the lower cavity is formed between the support member and the inner shell. The support member is configured to install a first circuit board and a second circuit board of the inverter module, the upper cavity is configured to accommodate the first circuit board, and the lower cavity is configured to accommodate the second circuit board.

[0009] In some embodiments, the support member includes a connected support plate and a connecting plate, the connecting plate is arranged at the edge of the support plate and is bent relative to the support plate, the connecting plate is connected to the inner shell body and suspends the support plate above the inner shell body, the top of the support plate is configured to install a first circuit board, and the bottom of the support plate is configured to install a second circuit board.

[0010] In some embodiments, the inner shell includes a surrounding wall and a top wall. The surrounding wall is arranged around the top wall, the bottom shell is installed at the bottom of the surrounding wall, and the top shell is installed at the top of the surrounding wall. The top of the surrounding wall is higher than the top wall, so that the accommodating cavity is formed between the surrounding wall, the top wall and the top shell.

[0011] In some embodiments, the surrounding wall is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in an interlaced manner to form a reinforcing rib structure.

[0012] In some embodiments, a bracket is disposed on the top of the bottom shell, and an opening is disposed on the bottom of the inner shell, wherein the opening allows the bracket to enter the inner shell, and the bracket is configured to support the battery cell in the inner shell.

[0013] In some embodiments, the first side shell is provided with at least one of a display screen, a button and an interface.

[0014] In one embodiment of the present application, an energy storage device is further provided. The energy storage device includes a battery cell, an inverter module and a shell device in any of the above embodiments. The battery cell is arranged in an inner shell, and the inverter module is arranged in an outer shell and placed in a accommodating cavity.

[0015] When assembling the energy storage device provided by the present application, since the bottom shell, top shell, first side shell, and inverter module are all uniformly installed in the inner shell, the structural integrity is stronger, thereby improving the overall structural strength, and the inner shell improves its own strength through the reinforcing rib structure, thereby further ensuring the overall structural strength of the energy storage device. In addition, the shell device is installed in the inner shell through the bottom shell, top shell, and first side shell, which also improves the convenience of disassembly. When the user needs to replace the bottom shell, top shell or first side shell, it only needs to be disassembled from the inner shell, without the need to disassemble other components, so that the bottom shell, top shell and first side shell form an independent structural module, thereby improving the modular modification potential of the energy storage device, so that the user can easily replace the bottom shell, top shell or first side shell according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of an energy storage device in one embodiment of the present application.

[0017] Figure 2 for Figure 1 Exploded view of the energy storage device.

[0018] Figure 3 for Figure 1 A perspective view of the middle housing device.

[0019] Figure 4 for Figure 1 A three-dimensional diagram of the assembled battery pack and inverter module.

[0020] Figure 5 for Figure 1 Exploded view of the battery pack and inverter module.

[0021] Figure 6 for Figure 1 A three-dimensional view of the inner shell.

[0022] Main component symbols

[0023] 100-housing device 200-energy storage device 201-battery pack

[0024] 202-inverter module 2021-first circuit board 2022-second circuit board

[0025] 203-battery core 10-inner shell 11-enclosing wall

[0026] 111-reinforcement rib 12-top wall 13-opening

[0027] 20-outer shell 21-bottom shell 22-top shell

[0028] 23-first side shell 24-accommodating cavity 241-upper cavity

[0029] 242-lower cavity 25-second side shell 30-support member

[0030] 31-support plate 32-connecting plate 33-bending part

[0031] 34-installation space 300-fan 101-reinforcement rib structure. DETAILED DESCRIPTION

[0032] The technical solution of the present application will be described below in conjunction with the drawings in the implementation modes of the present application. Obviously, the described implementation modes are only part of the implementation modes of the present application, rather than all the implementation modes.

[0033] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0035] At present, portable energy storage devices have main parts such as a casing, a battery pack and an inverter module. When assembling, they usually follow the top-down or left-to-right assembly rules. For example, the side shell is first installed on the top shell, and then the bottom shell is installed on the side shell. However, this assembly method has the problem of loose assembly, resulting in low overall structural strength of the energy storage device.

[0036] In view of this, the present application provides a shell device and an energy storage device that can improve structural strength. The shell device is applied to the energy storage device, the energy storage device includes a battery cell and an inverter module, and the shell device includes an inner shell and an outer shell. The inner shell is configured to accommodate the battery cell inside and fix the inverter module outside. The inner shell is accommodated in the outer shell, and the outer shell includes a bottom shell, a top shell and a first side shell. The inner shell is arranged on the bottom shell, the top shell is fixedly connected to the top of the inner shell, and the first side shell is fixedly connected to the side of the inner shell. The top of the inner shell and the inner wall of the top shell jointly define a accommodating cavity, and the accommodating cavity is configured to accommodate the inverter module.

[0037] When assembling the shell device provided by the present application, the bottom shell, top shell, first side shell, and inverter module are all uniformly installed in the inner shell, making the structural integrity stronger, thereby improving the overall structural strength, and the inner shell improves its own strength through the reinforcing rib structure, thereby further ensuring the overall structural strength of the energy storage device. In addition, the shell device is installed in the inner shell through the bottom shell, top shell, and first side shell, which also improves the convenience of disassembly. When the user needs to replace the bottom shell, top shell or first side shell, it only needs to be disassembled from the inner shell, without the need to disassemble other components, so that the bottom shell, top shell and first side shell form an independent structural module, thereby improving the modular modification potential of the shell device, so that the user can easily replace the bottom shell, top shell or first side shell according to needs.

[0038] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] like Figures 1 to 6 As shown, a shell device 100 and an energy storage device 200 are provided in an embodiment of the present application. The energy storage device 200 includes a shell device 100, a battery pack 201 and an inverter module 202. The shell device 100 accommodates the battery cells 203 and the inverter module 202 of the battery pack 201. The battery pack 201 is electrically connected to the inverter module 202. The inverter module 202 can convert the direct current of the battery pack 201 into alternating current for use by electrical appliances. The inverter module 202 can also convert the alternating current of the power grid into direct current to charge the battery pack 201. As an illustrative example, the energy storage device 200 can be a portable power supply used in outdoor scenes or a household energy storage system for storing energy for a household, etc.; the electrical appliances can be air conditioners, refrigerators, other energy storage devices or other electrical appliances, etc.

[0040] In some embodiments, the housing device 100 includes an inner housing 10 and an outer housing 20. The inner housing 10 is accommodated inside the outer housing 20. The battery cells 203 of the battery pack 201 are accommodated inside the inner housing 10. The inner housing 10 serves as the outer shell of the battery pack 201. The inverter module 202 is fixed to the outside of the inner housing 10 and accommodated inside the outer housing 20. The outer housing 20 includes a bottom housing 21, a top housing 22, and a first side housing 23. The inner housing 10 is arranged on the bottom housing 21. The top housing 22 is fixedly connected to the top of the inner housing 10. The first side housing 23 is fixedly connected to the side of the inner housing 10. The top of the inner housing 10 and the inner wall of the top housing 22 jointly define a receiving chamber 24. The receiving chamber 24 is used to accommodate the inverter module 202. The bottom housing 21, the top housing 22, and the first side housing 23 can not only protect the inner housing 10, but also fix or support other components.

[0041] When the shell device 100 is assembled, the bottom shell 21, the top shell 22, the first side shell 23 and the inverter module 202 are all uniformly installed in the inner shell 10, so that the shell device 100 has a stronger integrity, avoids the problem of loose structure, and thus improves the overall structural strength.

[0042] Further optionally, a reinforcing rib structure 101 is distributed on the outer surface of the inner shell 10. The inner shell 10 improves its own structural strength through the reinforcing rib structure 101, so that the inner shell 10 has a higher structural strength. Therefore, the bottom shell 21, the top shell 22, the first side shell 23 and the inverter module 202 are all installed in the inner shell 10, which can further improve the structural strength of the shell device 100.

[0043] In comparison, if only the bottom shell 21, the top shell 22, the first side shell 23 and the inverter module 202 are installed together, the assembly will be looser, resulting in a decrease in the structural strength of the outer shell 20. Therefore, the shell device 100 of the present application connects the bottom shell 21, the top shell 22, the first side shell 23 and the inverter module 202 to the inner shell 10, so that the integrity of the shell device 100 is stronger, the structural strength of the shell device 100 is improved, and the overall structural strength of the energy storage device 200 is improved.

[0044] In addition, if only the bottom shell 21, the top shell 22, the first side shell 23 and the inverter module 202 are installed together, the assembly operation will be more cumbersome, resulting in low assembly efficiency. Therefore, the shell device 100 of the present application improves the convenience of disassembly of the shell device 100 by connecting the bottom shell 21, the top shell 22, the first side shell 23 and the inverter module 202 to the inner shell 10. When the user needs to replace the bottom shell 21, the top shell 22 or the first side shell 23, it only needs to remove the bottom shell 21, the top shell 22 or the first side shell 23 from the inner shell 10, and there is no need to disassemble other components, so that the bottom shell 21, the top shell 22 and the first side shell 23 form an independent structural module, thereby improving the modular modification potential of the shell device 100, so that the user can easily replace the bottom shell 21, the top shell 22 or the first side shell 23 according to needs without affecting other components.

[0045] In some embodiments, the outer shell 20 also includes a second side shell 25, which is located between the bottom shell 21 and the top shell 22. The second side shell 25 is installed on at least one of the bottom shell 21, the top shell 22, or the first side shell 23, and / or the second side shell 25 is installed on the side of the inner shell 10. The second side shell 25 can protect the inner shell 10, and can also fix or support other components.

[0046] In some embodiments, the outer shell 20 includes two first side shells 23 and two second side shells 25, the two first side shells 23 are respectively arranged on two opposite sides of the inner shell 10, and the two second side shells 25 are respectively arranged on the other opposite sides of the inner shell 10, and the bottom shell 21, the top shell 22, the two first side shells 23 and the two second side shells 25 form a closed structure to accommodate the inner shell 10.

[0047] Optionally, the two first side shells 23 serve as the front panel and the rear panel of the energy storage device 200 respectively, and each first side shell 23 may be provided with an interface, a display screen, buttons, etc., so that the user can use or control the energy storage device 200 .

[0048] Optionally, the two second side shells 25 are respectively used as the left and right side shells of the energy storage device 200 to provide protection and decoration. Further, optionally, the two second side shells 25 are not fixed to the inner shell 10, but are only connected to at least one of the bottom shell 21, the top shell 22, or the first side shell 23, as long as the two second side shells 25 can be fixed, so that the two second side shells 25 can be more easily disassembled during maintenance or replacement.

[0049] In some embodiments, the housing device 100 further includes a support member 30, which is disposed on the inner housing 10 and located in the accommodating cavity 24. The support member 30 divides the accommodating cavity 24 into an upper cavity 241 and a lower cavity 242. The upper cavity 241 is formed between the support member 30 and the top shell 22, and the lower cavity 242 is formed between the support member 30 and the inner housing 10. The support member 30 is used to install a first circuit board 2021 and a second circuit board 2022 of the inverter module 202, wherein the first circuit board 2021 is disposed on the top of the support member 30, and the second circuit board 2022 is disposed on the bottom of the support member 30. The upper cavity 241 accommodates the first circuit board 2021, and the lower cavity 242 accommodates the second circuit board 2022. The shell device 100 not only fixes the first circuit board 2021 and the second circuit board 2022 through the support member 30, but also stacks the first circuit board 2021 and the second circuit board 2022 to save space, and also suspends the first circuit board 2021 and the second circuit board 2022 to facilitate heat dissipation and avoid collision.

[0050] Optionally, the first circuit board 2021 is a PSDR (Power Supply Drive, inverter) circuit board, and the second circuit board 2022 is an MPPT (Maximum Power Point Tracking, maximum power point tracking) circuit board.

[0051] In some embodiments, the support member 30 includes a connected support plate 31 and a connecting plate 32, the connecting plate 32 is arranged at the edge of the support plate 31 and is bent relative to the support plate 31, the connecting plate 32 is connected to the inner shell 10 and suspends the support plate 31 above the inner shell 10, the top of the support plate 31 is used to install the first circuit board 2021, the bottom of the support plate 31 is used to install the second circuit board 2022, the upper cavity 241 is formed between the support plate 31 and the top shell 22, and the lower cavity 242 is formed between the support plate 31 and the inner shell 10. The support member 30 achieves the purpose of fixing the first circuit board 2021 and the second circuit board 2022 through the support plate 31 and the connecting plate 32, so that the first circuit board 2021 and the second circuit board 2022 are stacked and suspended.

[0052] Optionally, the support plate 31 is a rectangular plate to fix the rectangular first circuit board 2021 and the second circuit board 2022 , and a connecting plate 32 is respectively provided at the edges of the four sides of the support plate 31 , and the four connecting plates 32 can stably support the support plate 31 .

[0053] In some embodiments, the connecting plate 32 is provided with a bending portion 33 on a side away from the supporting plate 31. The bending portion 33 is bent toward the side away from the supporting plate 31 and is parallel to the supporting plate 31. An installation space 34 is formed between the bending portion 33 and the connecting plate 32. The installation space 34 is used to install a fan 300. The fan 300 is used to dissipate heat for the first circuit board 2021 and the second circuit board 2022.

[0054] Optionally, the support member 30 is formed into the support plate 31 , the connecting plate 32 and the bending portion 33 by a sheet metal process to facilitate processing and production.

[0055] In some embodiments, the inner shell 10 includes a surrounding wall 11 and a top wall 12. The surrounding wall 11 is arranged around the top wall 12, the bottom shell 21 is installed at the bottom of the surrounding wall 11, and the top shell 22 is installed at the top of the surrounding wall 11. The top of the surrounding wall 11 is higher than the top wall 12, so that the accommodating cavity 24 is formed between the surrounding wall 11, the top wall 12 and the top shell 22, thereby improving the structural strength and capacity of the accommodating cavity 24 and playing a role in saving space.

[0056] Optionally, the connecting plate 32 is installed on the top of the top wall 12, and the lower cavity 242 is formed between the support plate 31, the connecting plate 32, the surrounding wall 11 and the top wall 12, so that the second circuit board 2022 in the lower cavity 242 is protected by the support plate 31, the connecting plate 32, the surrounding wall 11 and the top wall 12 to improve the stability of the second circuit board 2022.

[0057] Optionally, a top surface of the top shell 22 is provided with an air avoidance groove (not shown), and the air avoidance groove is used to avoid components and copper busbars on the second circuit board 2022 to avoid interference between the top shell 22 and the second circuit board 2022 .

[0058] In some embodiments, the outer surface of the surrounding wall 11 is provided with a plurality of reinforcing ribs 111 , which are crisscrossed to enhance the strength of the surrounding wall 11 , thereby enhancing the structural strength of the inner shell 10 , and further enhancing the structural strength of the shell device 100 and the energy storage device 200 .

[0059] In some embodiments, a bracket 211 is provided at the top of the bottom shell 21, and an opening 13 is provided at the bottom of the inner shell 10. The opening 13 allows the battery cell 203 to enter the inner shell 10. After the bottom shell 21 is assembled with the inner shell 10, the bottom shell 21 covers the opening 13, and the bracket 211 is located in the opening 13 and is used to support the battery cell 203 in the inner shell 10, so as to realize the battery chassis integration (CTC, Cell to Chassis) technology.

[0060] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A housing device, applied to an energy storage device, wherein the energy storage device comprises a battery cell and an inverter module, characterized in that: The housing device comprises: An inner shell, the inner shell is configured to accommodate the battery core inside and fix the inverter module outside, and a reinforcing rib structure is distributed on the surface of the inner shell; and An outer shell, the inner shell is accommodated in the outer shell, the outer shell includes a bottom shell, a top shell and a first side shell, the inner shell is arranged on the bottom shell, the top shell is fixedly connected to the top of the inner shell, the first side shell is fixedly connected to the side of the inner shell, the top of the inner shell and the inner wall of the top shell jointly define a accommodating cavity, and the accommodating cavity is configured to accommodate the inverter module.

2. The housing device according to claim 1, characterized in that: The outer shell further includes a second side shell, the second side shell is installed on at least one of the bottom shell, the top shell, or the first side shell, and the second side shell can be selectively installed on a side of the inner shell.

3. The housing device according to claim 2, characterized in that: The outer shell includes two first side shells and two second side shells, the two first side shells are respectively arranged on two opposite sides of the inner shell, and the two second side shells are respectively arranged on the other two opposite sides of the inner shell, and the bottom shell, the top shell, the two first side shells and the two second side shells surround the inner shell.

4. The housing device according to claim 1, wherein: The shell device also includes a support member, which is arranged in the inner shell and located in the accommodating cavity. The support member divides the accommodating cavity into an upper cavity and a lower cavity. The upper cavity is formed between the support member and the top shell, and the lower cavity is formed between the support member and the inner shell. The support member is configured to install a first circuit board and a second circuit board of the inverter module, the upper cavity is configured to accommodate the first circuit board, and the lower cavity is configured to accommodate the second circuit board.

5. The housing device according to claim 4, characterized in that: The support member includes a connected support plate and a connecting plate, wherein the connecting plate is arranged at the edge of the support plate and is bent relative to the support plate, the connecting plate is connected to the inner shell body and suspends the support plate above the inner shell body, the top of the support plate is configured to install the first circuit board, and the bottom of the support plate is configured to install the second circuit board.

6. The housing device according to any one of claims 1 to 5, characterized in that: The inner shell includes a surrounding wall and a top wall, the surrounding wall is arranged around the top wall, the bottom shell is installed on the bottom of the surrounding wall, and the top shell is installed on the top of the surrounding wall. The top of the surrounding wall is higher than the top wall, so that the accommodating cavity is formed between the surrounding wall, the top wall and the top shell.

7. The housing device according to claim 6, characterized in that: The surrounding wall is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in a staggered manner to form the reinforcing rib structure.

8. The housing device according to any one of claims 1 to 5, characterized in that: A bracket is disposed on the top of the bottom shell, and an opening is disposed on the bottom of the inner shell. The opening allows the bracket to enter the inner shell, and the bracket is configured to support the battery cell in the inner shell.

9. The housing device according to any one of claims 1 to 5, characterized in that: The first side shell is provided with at least one of a display screen, a button and an interface.

10. An energy storage device, characterized in that: The energy storage device comprises a battery cell, an inverter module and a shell device as described in any one of claims 1 to 9, wherein the battery cell is arranged in the inner shell, and the inverter module is arranged in the outer shell and placed in the accommodating cavity.

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