Shell assembly and energy storage device

Abstract

The utility model discloses a shell assembly and an energy storage device, the shell assembly comprises a shell and a support, the shell comprises a bottom plate and a side wall arranged around the bottom plate, the bottom plate and the side wall are connected to define a mounting cavity, and the mounting cavity is provided with an opening facing a first direction; the support is arranged in the mounting cavity, a guide part is arranged at the end, close to the bottom plate, of the support in the first direction, and the distance between the guide part and the side wall is gradually increased from the end away from the bottom plate to the end close to the bottom plate in the first direction. In the application, the guide part is arranged at one end, close to the bottom plate, of the bracket along the first direction, when the bracket and the shell are mounted, the guide part is in contact with the side wall of the shell, and the distance between the guide part and the side wall is gradually increased from one end far away from the bottom plate to one end close to the bottom plate along the first direction, so that the bracket is guided when being mounted into the shell; the support can smoothly slide into the shell, and the overall assembling efficiency of the shell assembly is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a housing assembly and an energy storage device. Background Art

[0002] With the continuous development of battery technology, the types and applications of existing energy storage devices are constantly expanding. Clean and renewable energy accounts for a very high proportion of energy storage power stations. Using clean energy to charge energy storage devices and achieve frequency and peak regulation of the power grid can significantly improve the absorption of renewable energy, forming a core foundation for building an energy internet and promoting the development of new energy industries. An energy storage device consists of a housing, a bracket, and a battery. The bracket and battery are mounted in the housing, and the bracket secures the battery. A cooling structure is provided within the housing to cool the battery.

[0003] In the prior art, when the bracket and the housing are installed, it is difficult for the bracket to enter the housing, resulting in low overall assembly efficiency of the energy storage device. Utility Model Content

[0004] The purpose of this application is to provide a shell assembly and an energy storage device to solve the problem that it is difficult for the bracket to enter the shell, resulting in low assembly efficiency of the shell assembly.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides a housing assembly, comprising:

[0007] The housing comprises a bottom plate and side panels surrounding the bottom plate, wherein the bottom plate and the side panels are connected to form a mounting cavity, and the mounting cavity has an opening facing a first direction;

[0008] The bracket is arranged in the installation cavity, and a guide portion is provided at one end of the bracket close to the base plate in the first direction. The distance between the guide portion and the side panel gradually increases from the end away from the base plate to the end close to the base plate along the first direction.

[0009] In one embodiment, the bracket includes a base and side panels, the base and the side panels are connected to form a receiving space, the guide portion is arranged on the base, and the guide portion is arranged around the base.

[0010] In one embodiment, the side surface of the side plate in the second direction and an end surface of the guide portion in the second direction are on the same plane, and the second direction is perpendicular to the first direction.

[0011] In one embodiment, the guide portion includes a guide inclined surface and / or a guide curved surface.

[0012] In one embodiment, the guide portion is a guide slope, and an included angle between the guide slope and the first direction is α, 20°<α≤30°.

[0013] In one embodiment, a limiting hole is provided on the base, and a limiting column is provided on the bottom plate, and the limiting column is inserted into the limiting hole.

[0014] In one embodiment, in the first direction, the aperture of the limiting hole gradually increases from the end away from the base plate to the end close to the base plate, and the outer diameter of the limiting column gradually decreases from the end away from the opening to the end close to the opening.

[0015] In one embodiment, the limiting holes include a fixing hole and a guide hole sequentially arranged in the first direction, the aperture of the guide hole gradually increases from an end away from the base plate to an end close to the base plate, and the aperture of the fixing holes in the first direction is consistent;

[0016] The limiting column includes a fixing section and a guide section arranged in sequence in the first direction, the fixing section is arranged in the fixing hole, and the guide section is arranged in the guide hole. The outer diameter of the guide section gradually decreases from the end away from the opening to the end close to the opening, and the outer diameter of the fixing section in the first direction is consistent.

[0017] In one embodiment, the angle between the hole wall of the guide hole and the first direction is β, 8°<β≤30°.

[0018] In one embodiment, the shell assembly further includes a fixing frame, which is arranged at one end of the bracket away from the bottom plate in the first direction, and an elastic connecting member is connected between the fixing frame and the side panel.

[0019] In one embodiment, the shell assembly further includes a cover plate, which is connected to the side panel and blocks the opening.

[0020] In a second aspect, the present application further provides an energy storage device, comprising a battery module and a housing assembly according to the first aspect, wherein the battery module is disposed on the bracket.

[0021] In one embodiment, a coolant is provided in the installation cavity, and the battery module is in direct contact with the coolant.

[0022] In one embodiment, the battery module is immersed in a coolant, or the coolant is sprayed on the battery module.

[0023] In one embodiment, a cooling pipeline is provided on the bracket, and a liquid inlet pipe and a liquid outlet pipe are provided on the shell, the cooling pipeline is connected to the liquid inlet pipe, and the liquid outlet pipe is connected to the installation cavity;

[0024] There are multiple battery modules, and the multiple battery modules are sequentially arranged on the bracket along the first direction. The cooling pipeline includes multiple branch pipes, and the multiple branch pipes are arranged in a one-to-one correspondence with the multiple battery modules.

[0025] In a third aspect, the present application further provides a housing assembly, comprising:

[0026] The housing comprises a bottom plate and side panels, wherein the side panels are arranged around the bottom plate, the bottom plate and the side panels are connected to form a mounting cavity, and the mounting cavity has an opening facing a first direction;

[0027] a bracket, disposed in the mounting cavity, the bracket being adapted to accommodate a battery module, the battery module being in direct contact with the coolant;

[0028] A cover plate is connected to the side panel, and the cover plate blocks the opening to enclose the bracket in the installation cavity.

[0029] In the present application, a guide portion is provided on one end of the bracket close to the base plate along the first direction. When the bracket is installed with the shell, the guide portion contacts the side wall of the shell, and the distance between the guide portion and the side wall is gradually increased along the first direction from the end away from the base plate to the end close to the base plate, so as to guide the bracket when it is installed into the shell, so that the bracket can slide smoothly into the shell, thereby improving the overall assembly efficiency of the shell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 An exploded diagram of an energy storage device according to one embodiment of the present application;

[0032] Figure 2 This is a schematic structural diagram of a bracket according to one embodiment of the present application;

[0033] Figure 3 This is a cross-sectional view of a housing assembly before the bracket according to one embodiment of the present application is installed into the housing;

[0034] Figure 4This is a cross-sectional view of a housing assembly after the bracket according to one embodiment of the present application is installed in the housing;

[0035] Figure 5 This is a partial structural diagram of the cooperation between the limiting hole and the limiting column in one embodiment of the present application;

[0036] Figure 6 This is a partial structural diagram of an energy storage device according to one embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100. Shell; 110. Liquid inlet pipe; 120. Liquid outlet pipe; 130. Bottom plate; 131. Limiting column; 131a. Fixing section; 131b. Guide section; 140. Side panel; 150. Opening; 200. Bracket; 210. Guide section; 220. Lifting ring; 230. Base; 231. Metal plate; 232. Plastic part; 233. Limiting hole; 233a. Fixing hole; 233b. Guide hole; 240. Side panel; 250. Accommodating space; 260. Reinforcing beam; 300. Cover plate; 400. Cooling pipe; 410. Branch pipe; 500. Fixing bracket; 600. Elastic connector. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] 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 be an intermediate component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be an intermediate component.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used in this application includes any and all combinations of one or more of the relevant listed items.

[0042] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0043] With the continuous advancement of battery technology, the types and applications of existing energy storage devices are constantly expanding. Clean and renewable energy accounts for a very high proportion of energy storage power stations. Using clean energy to charge energy storage devices and achieve frequency and peak regulation of the power grid can also significantly improve the absorption of renewable energy, forming a core foundation for building an energy internet and promoting the development of new energy industries. An energy storage device consists of a housing, a bracket, and a battery. The bracket and battery are housed in the housing, and the bracket secures the battery. Batteries are sensitive to temperature and are prone to thermal runaway in both high and low temperature environments. Generally speaking, the ideal operating temperature range for batteries in actual operating conditions is 15 to 45°C, within which all battery performance characteristics are excellent. The main cooling technologies used in energy storage devices include air cooling, heat pipe technology, and immersion liquid cooling.

[0044] Energy storage devices can be used in various fields, including home energy storage, power systems, transportation, and industry. They can store electricity generated by renewable energy sources, such as solar power, for use at home at night or on rainy days. Furthermore, energy storage systems can serve as a backup power source in the event of a grid failure, ensuring basic household electricity needs. Energy storage technology plays a vital role in balancing grid loads and improving power quality and stability. For example, when renewable energy sources such as wind and solar power are connected to the grid, energy storage systems can smooth output fluctuations and ensure stable grid operation. Onboard energy storage systems can store electricity, providing continuous and stable power for electric vehicles.

[0045] In the prior art, when the bracket and the housing are installed, it is difficult for the bracket to enter the housing, resulting in low overall assembly efficiency of the energy storage device.

[0046] refer to Figure 1 and Figure 2 The present application provides an energy storage device comprising a battery module and a housing assembly. The housing assembly comprises a housing 100, a bracket 200, and a cover plate 300. The battery module is mounted on the bracket 200, which secures the battery module. The battery module is in direct contact with a coolant. The housing 100 is filled with coolant to achieve immersion cooling of the battery module, improving cooling efficiency. Alternatively, the coolant can be sprayed onto the battery module. The coolant can be, but is not limited to, hydrofluoroether (HFE), hydrofluoroolefin (HFO), or ester-based coolants. The housing 100 is surrounded by welded metal plates 231. The cover plate 300 is connected to the housing 100, and a seal is formed between the housing 100 and the cover plate 300 to enclose the bracket 200 and the battery module within the housing 100. The battery module comprises a plurality of battery cells, which can be, but are not limited to, lithium batteries, lead-acid batteries, sodium-ion batteries, and flow batteries.

[0047] Among them, a cooling pipe 400 is provided on the bracket 200, and a liquid inlet pipe 110 and a liquid outlet pipe 120 are provided on the shell 100. The cooling pipe 400 is connected to the liquid inlet pipe 110, and the liquid outlet pipe 120 is connected to the interior of the shell 100. The coolant enters the interior of the shell 100 through the liquid inlet pipe 110, and the coolant inside the shell 100 flows out through the liquid outlet pipe 120. Specifically, there are multiple battery modules, and the multiple battery modules are stacked on the bracket 200. The cooling pipe 400 includes multiple branch pipes 410, and the multiple branch pipes 410 are arranged in a one-to-one correspondence with the multiple battery modules. That is, each battery module is equipped with an independent branch pipe 410, which can ensure that each battery module is fully cooled, can more effectively reduce the operating temperature of the battery module, reduce heat accumulation, thereby extending the overall service life of the energy storage battery and improving the performance of the energy storage battery.

[0048] refer to Figure 1 、 Figure 3 and Figure 4 The shell 100 includes a bottom plate 130 and a side panel 140 arranged around the bottom plate 130. The bottom plate 130 and the side panel 140 are connected to form an installation cavity. The installation cavity has an opening 150 facing the first direction, and the opening 150 is for the bracket 200 to enter the installation cavity; the bracket 200 is arranged in the installation cavity, and a guide portion 210 is provided at one end of the bracket 200 close to the bottom plate 130 in the first direction. The distance between the guide portion 210 and the side panel 140 gradually increases along the first direction from the end away from the bottom plate 130 to the end close to the bottom plate 130. In the present application, a guide portion 210 is provided on the bracket 200 at one end close to the base plate 130 along the first direction. When the bracket 200 is installed with the shell 100, the guide portion 210 contacts the side wall 140 of the shell 100, and the distance between the guide portion 210 and the side wall 140 is gradually increased along the first direction from the end away from the base plate 130 to the end close to the base plate 130, so as to guide the bracket 200 when it is installed into the shell 100, so that the bracket 200 can slide smoothly into the shell 100, thereby improving the overall assembly efficiency of the shell assembly.

[0049] The cover plate 300 is rotatably connected to the side panel 140 . When the cover plate 300 is rotated to block the opening 150 , the installation cavity can be closed, so that the bracket 200 and the battery module are in a sealed space.

[0050] In this application, the height direction of the housing 100 is taken as the first direction X, the length direction or the width direction of the housing 100 is taken as the second direction Y, and the first direction X and the second direction Y are perpendicular to each other.

[0051] In the housing assembly provided in the present application, a lifting ring 220 is provided at one end of the bracket 200 away from the bottom plate 130 along the first direction X. The lifting ring 220 is used for lifting the bracket 200 during transportation and loading into the housing 100. The bracket 200 includes a base 230 and a side panel 240. The base 230 and the side panel 240 are connected to form a storage space 250. The storage space 250 is used to accommodate the battery module. The guide portion 210 is provided on the base 230, and the guide portion 210 is arranged around the base 230. Specifically, the guide portion 210 includes a guide bevel and / or a guide arc surface. That is, the guide portion 210 can include only a guide bevel, only a guide arc surface, or a combination of a guide bevel and a guide arc surface. When the bracket 200 is loaded into the housing 100, the guide portion 210 contacts the side panel 140 smoothly, so that the bracket 200 is smoothly loaded into the housing 100. The guide portion 210 is disposed around the base 230 to further enhance the guiding effect of the guide portion 210 on the bracket 200 when the bracket 200 is installed into the housing 100 .

[0052] In one embodiment, the base 230 includes a metal plate 231 and a plastic part 232, which are stacked in a first direction X, and the metal plate 231 is connected between the plastic part 232 and the side plate 240; the metal plate 231 is used to bear the weight of the battery module, and the guide portion 210 is provided on the plastic part 232 so that the outer peripheral surface of the plastic part 232 is wedge-shaped, which facilitates guiding and positioning when the bracket 200 is initially installed into the shell 100.

[0053] Multiple side panels 240 are provided, surrounding the periphery of the battery module, to protect the battery module while the bracket 200 is installed in the housing 100. The side panels 240 can be made of a self-lubricating plastic material with a low surface friction coefficient, reducing friction between the side panels 240 and the side panels 140 during installation of the bracket 200 into the housing 100. Optionally, the multiple side panels 240 are connected by reinforcing beams 260 to enhance the overall structural strength of the bracket 200.

[0054] refer to Figure 3 The side surface of the side panel 240 in the second direction Y and the end surface of the guide portion 210 in the second direction Y are in the same plane. When the bracket 200 is installed into the housing 100, the base 230 first contacts the side panel 140. After the base 230 enters the housing 100, the side panel 240 enters the housing 100 as the bracket 200 descends. The side surface of the side panel 240 in the second direction Y and the end surface of the guide portion 210 in the second direction Y are in the same plane to ensure a smooth transition between the base 230 and the side panel 240, further improving the smoothness of the bracket 200 being installed into the housing 100.

[0055] In one embodiment, the guide portion 210 is a guide slope, and the angle between the guide slope and the first direction X is α, 20°<α≤30°. When α is within this range, the left and right deviation tolerance range of the bracket 200 when it is installed in the shell 100 is more than 18 mm, which meets the general lifting operation requirements, and the guide portion 210 will first contact the upper edge of the side panel 140, thereby playing a guiding role. Among them, α can be 20.5°, 21°, 22°, 23°, 25°, 27°, 28°, 30°, etc., but is not limited to the listed values. Other values not listed within the numerical range are also applicable. If α is less than 20° or greater than 30°, the smoothness of the guidance during the installation of the bracket 200 into the shell 100 will be reduced.

[0056] refer to Figure 1 、 Figure 4 and Figure 5 The base 230 is provided with a limiting hole 233, and the bottom plate 130 is provided with a limiting post 131, which is inserted into the limiting hole 233. Specifically, the limiting post 131 cooperates with the limiting hole 233 to limit and secure the bottom of the bracket 200, thereby improving the secure installation of the bracket 200. At the same time, the cooperation between the limiting hole 233 at the bottom of the bracket 200 and the limiting post 131 can more accurately align the bottom of the bracket 200 for installation and limit the position after installation, reducing the risk of bottom bolt fixation when the bracket 200 is too large in the first direction X. The limiting hole 233 can penetrate the base 230 in the first direction X, thereby increasing the length of the cooperation between the limiting post 131 and the limiting hole 233 in the first direction X.

[0057] In the first direction X, the diameter of the limiting hole 233 gradually increases from the end away from the bottom plate 130 to the end close to the bottom plate 130, and the outer diameter of the limiting post 131 gradually decreases from the end away from the opening 150 to the end close to the opening 150. Specifically, the hole wall of the limiting hole 233 and the outer peripheral wall of the limiting post 131 are both conical surfaces. After the base 230 enters the shell 100, the limiting hole 233 cooperates with the conical surface of the limiting post 131, so that the limiting post 131 can be accurately inserted into the limiting hole 233. Then, the limiting post 131 cooperates with the limiting hole 233 to achieve the positioning of the bracket 200 in the front, back, left and right directions. The use of this limiting structure can guide and protect the bracket 200 throughout the entire process of being installed into the shell 100, preventing the bracket 200 from sliding into the shell 100 when the installation stroke is large, thereby preventing damage to key components of the battery module.

[0058] In one embodiment, the limiting hole 233 includes a fixing hole 233a and a guide hole 233b arranged in sequence in the first direction X, the aperture of the guide hole 233b gradually increases from the end away from the base plate 130 to the end close to the base plate 130, and the aperture of the fixing hole 233a in the first direction X is consistent; the limiting column 131 includes a fixing section 131a and a guide section 131b arranged in sequence in the first direction X, the fixing section 131a is arranged in the fixing hole 233a, and the guide section 131b is arranged in the guide hole 233b, the outer diameter of the guide section 131b gradually decreases from the end away from the opening 150 to the end close to the opening 150, and the outer diameter of the fixing section 131a in the first direction X is consistent. That is, only the hole wall of the guide hole 233b part in the limiting hole 233 is a conical surface, and only the outer peripheral wall of the guide section 131b part in the limiting column 131 is a conical surface, which can also guide the limiting column 131 when inserted into the limiting hole 233; at the same time, through the cooperation between the fixing section 131a and the fixing hole 233a, the limiting effect of the front, back, left and right directions of the bracket 200 is improved.

[0059] Optionally, the angle β between the hole wall of the guide hole 233b and the first direction X is 8°<β≤30°. When β is within this range, the limiting hole 233 on the base 230 first contacts the top of the limiting post 131, thereby playing a guiding role. β can be 9°, 10°, 12°, 13°, 15°, 20°, 25°, 30°, etc., but is not limited to the values listed. Other values not listed within the numerical range are also applicable. If β is less than 8° or greater than 30°, the smoothness of the guidance of the bracket 200 during installation into the housing 100 will be reduced.

[0060] refer to Figure 6 The shell assembly also includes a fixing frame 500, which is arranged at one end of the bracket 200 away from the bottom plate 130 in the first direction X, and an elastic connector 600 is connected between the fixing frame 500 and the side panel 140. After the bracket 200 is installed in the shell 100, the fixing frame 500 and the bracket 200 are connected by bolts or the like, and then the fixing frame 500 and the shell 100 are connected by the elastic connector 600 to fix the top of the bracket 200, thereby further improving the firmness of the installation of the bracket 200. The elastic connector 600 can adapt to the installation of different brackets 200 with slightly different heights, and increase the shock absorption effect of the bracket 200 during transportation, thereby better protecting the internal components of the battery module. Among them, the elastic connector 600 can be formed by bending a plate multiple times, which is convenient for production.

[0061] In one embodiment, a housing assembly includes a housing 100, a bracket 200, and a cover plate 300. The housing 100 includes a bottom plate 130 and side panels 140. The side panels 140 are disposed around the bottom plate 130. The bottom plate 130 and the side panels 140 are connected to form a mounting cavity. The mounting cavity has an opening 150 facing a first direction X. The bracket 200 is disposed in the mounting cavity and is suitable for accommodating a battery module, which is in direct contact with a coolant. The cover plate 300 is connected to the side panels 140 and blocks the opening 150 to enclose the bracket 200 in the mounting cavity. Specifically, the opening 150 allows the bracket 200 to enter the mounting cavity. After the bracket 200 enters the mounting cavity, the cover plate 300 blocks the opening 150 to form a closed mounting cavity. The bracket 200 and the battery module are enclosed in the mounting cavity, and the coolant is in direct contact with the battery module, thereby achieving efficient heat transfer and dissipation, effectively reducing the operating temperature of the battery module and extending the service life of the battery module.

[0062] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the orientation or positional relationship described in the accompanying drawings. They are only for the convenience of describing the present application 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. Therefore, they cannot be understood as limitations on the present application.

[0063] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present application are still within the scope covered by the present application.

Claims

1. A housing assembly, characterized in that: include: The housing comprises a bottom plate and side panels surrounding the bottom plate, wherein the bottom plate and the side panels are connected to form a mounting cavity, and the mounting cavity has an opening facing a first direction; The bracket is arranged in the installation cavity, and a guide portion is provided at one end of the bracket close to the base plate in the first direction. The distance between the guide portion and the side panel gradually increases from the end away from the base plate to the end close to the base plate along the first direction.

2. The housing assembly according to claim 1, wherein: The bracket includes a base and side panels, the base and the side panels are connected to form a receiving space, the guide portion is arranged on the base, and the guide portion is arranged around the base.

3. The housing assembly according to claim 2, wherein: The side surface of the side plate in the second direction and an end surface of the guide portion in the second direction are on the same plane, and the second direction is perpendicular to the first direction.

4. The housing assembly according to claim 1, wherein: The guide portion includes a guide inclined surface and / or a guide curved surface.

5. The housing assembly according to claim 1, wherein: The guide portion is a guide slope, and an included angle between the guide slope and the first direction is α, 20°<α≤30°.

6. The housing assembly according to claim 2, wherein: A limiting hole is provided on the base, and a limiting column is provided on the bottom plate. The limiting column is inserted into the limiting hole.

7. The housing assembly according to claim 6, wherein: In the first direction, the diameter of the limiting hole gradually increases from the end away from the bottom plate to the end close to the bottom plate, and the outer diameter of the limiting column gradually decreases from the end away from the opening to the end close to the opening.

8. The housing assembly according to claim 6, wherein: The limiting holes include a fixing hole and a guide hole sequentially arranged in the first direction, the aperture of the guide hole gradually increases from the end away from the base plate to the end close to the base plate, and the aperture of the fixing holes in the first direction is consistent; The limiting column includes a fixing section and a guide section arranged in sequence in the first direction, the fixing section is arranged in the fixing hole, and the guide section is arranged in the guide hole. The outer diameter of the guide section gradually decreases from the end away from the opening to the end close to the opening, and the outer diameter of the fixing section in the first direction is consistent.

9. The housing assembly according to claim 8, wherein: The included angle between the hole wall of the guide hole and the first direction is β, 8°<β≤30°.

10. The housing assembly according to claim 1, wherein: The housing assembly further includes a fixing frame, which is arranged at one end of the bracket away from the bottom plate in the first direction, and an elastic connecting member is connected between the fixing frame and the side panel.

11. The housing assembly according to claim 1, wherein: The housing assembly further includes a cover plate connected to the side panel and sealing the opening.

12. An energy storage device, characterized in that: It comprises a battery module and a shell assembly according to any one of claims 1 to 11, wherein the battery module is arranged on the bracket.

13. The energy storage device according to claim 12, characterized in that: Cooling liquid is provided in the installation cavity, and the battery module is in direct contact with the cooling liquid.

14. The energy storage device according to claim 12, characterized in that The battery module is immersed in the coolant, or the coolant is sprayed on the battery module.

15. The energy storage device according to claim 12, characterized in that: The bracket is provided with a cooling pipeline, and the shell is provided with a liquid inlet pipe and a liquid outlet pipe, the cooling pipeline is connected to the liquid inlet pipe, and the liquid outlet pipe is connected to the installation cavity; There are multiple battery modules, and the multiple battery modules are sequentially arranged on the bracket along the first direction. The cooling pipeline includes multiple branch pipes, and the multiple branch pipes are arranged in a one-to-one correspondence with the multiple battery modules.

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