An energy storage device

Abstract

The application discloses a kind of energy storage equipment, including cabinet and energy storage converter, the top of cabinet is respectively equipped with PCS installation component, air outlet component and upper outgoing line component, and energy storage converter is set on PCS installation component;Air outlet component includes: first channel, first channel is used to export the airflow from the direction of energy storage converter direction;Upper outgoing line component includes: outgoing line box, outgoing line box is equipped with wire collecting hole between cabinet, outgoing line hole is penetrated on outgoing line box, and wire collecting hole and outgoing line hole are through.This application provides PCS installation component, which not only fixes energy storage converter on the top of cabinet, but also provides optimized space layout for air outlet component to dissipate heat of energy storage converter, and leaves enough space for upper outgoing line component to arrange lines.The air outlet component and PCS installation component in the application work cooperatively, through optimized space layout and airflow export path, to ensure that the heat management of the environment where the lines on the top of cabinet and energy storage converter are located meets the requirements, thereby ensuring the stable operation of energy storage system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial and commercial energy storage, and particularly relates to an energy storage device. BACKGROUND

[0002] The energy storage cabinet is a key device in the power system, and its main function is to store the power generated by renewable energy (such as wind energy and solar energy). The current market energy storage cabinet for industrial and commercial use usually adopts a bottom outlet (power connection line) design scheme considering heat management and protection. Although this design meets the safety and heat management requirements to some extent, it also brings some obvious defects, especially in terms of line arrangement flexibility. Specifically, the line arrangement is not flexible when the energy storage device is assembled, and it is difficult to adjust and change the line, which is difficult to meet the requirements of different needs and scenes. SUMMARY

[0003] The main purpose of the present application is to provide an energy storage device which can flexibly arrange the line when assembled under the premise of meeting the safety and heat management requirements, and also helps to adjust and change the line to adapt to different needs and scenes.

[0004] The purpose of the present application can be achieved by adopting the following technical scheme:

[0005] An energy storage device, comprising: a cabinet body and an energy storage converter, the top of the cabinet body is respectively provided with a PCS mounting assembly, an air outlet assembly and an upper outlet assembly, and the energy storage converter is arranged on the PCS mounting assembly.

[0006] The air outlet assembly comprises a first channel for guiding the air flow from the direction of the energy storage converter outward.

[0007] The upper outlet assembly comprises an outlet box, a wire collecting hole is arranged between the outlet box and the cabinet body, an outlet hole is arranged on the outlet box, and the wire collecting hole and the outlet hole are communicated to enable the line on the cabinet body to be arranged through the wire collecting hole and the outlet hole.

[0008] The PCS mounting assembly comprises a support member and a fastener for forming a clamping space, and the energy storage converter is arranged in the clamping space.

[0009] The support member comprises a fixed part and a support part arranged on the top of the fixed part, the energy storage converter is arranged on the support part, and the fixed part is arranged on the top of the cabinet body to leave a space between the energy storage converter and the top of the cabinet body.

[0010] The supporting pieces are two in number and are arranged at opposite positions, and the fastener and the two supporting pieces jointly enclose the clamping space.

[0011] The air outlet assembly comprises:

[0012] An inlet is arranged for introducing the air flow.

[0013] An outlet is arranged, and the diameter of the outlet is larger than that of the inlet, and the outlet faces outward.

[0014] The inlet and the outlet are connected through the first channel to form an air flow outlet structure from small to large.

[0015] One side of the outlet box is provided with a detachable outlet mounting plate, and a plurality of outlet holes are arranged on the outlet mounting plate.

[0016] The top of the outlet box is provided with a guide plate on each of the two sides, and a circuit breaker fixing plate is arranged between the two guide plates, wherein the opposite sides of the circuit breaker fixing plate abut against the guide plates adjacent thereto.

[0017] The energy storage device further comprises a support bottom plate, and the PCS installation assembly, the air outlet assembly and the upper outlet assembly are arranged on the support bottom plate.

[0018] The energy storage device further comprises:

[0019] A top cover is hinged to the top of the cabinet.

[0020] A driving assembly is arranged between the top cover and the cabinet.

[0021] The driving assembly is used for controlling the opening and closing of the top cover.

[0022] The energy storage device further comprises:

[0023] A cavity is arranged in the interior of the cabinet, and the cavity is used for placing a plurality of energy storage batteries.

[0024] A refrigeration assembly is arranged on the outside of the cabinet, and the refrigeration assembly is used for delivering cooling gas to the cavity.

[0025] A ventilation assembly is arranged on the top of the cavity, and the ventilation assembly is used for absorbing hot air in the cavity and delivering the hot air to the refrigeration assembly for cooling.

[0026] The energy storage device has the following beneficial technical effects:

[0027] 1、The PCS installation assembly provided by the application not only fixes the energy storage converter on the top of the cabinet body, but also provides a space layout for the air outlet assembly to optimize the heat dissipation of the energy storage converter, and leaves enough space for the upper outgoing line assembly to arrange the lines. The air outlet assembly and the PCS installation assembly work cooperatively to ensure that the heat management of the environment where the lines and the energy storage converter are located on the top of the cabinet body meets the requirements through the optimized space layout and air outlet path, thereby ensuring the stable operation of the energy storage system.

[0028] 2、The upper outgoing line assembly is adopted in the application, so that the lines in the energy storage cabinet can realize the effect of top outgoing line through the line collecting hole and the outgoing hole on the outgoing line box, and the energy storage battery in the cabinet body can be directly connected with the energy storage converter on the top of the cabinet body after outgoing line to the top, so as to realize the conversion and storage of electric energy.

[0029] 3、Compared with the traditional bottom outgoing line, the upper outgoing line assembly of the application realizes outgoing line of the lines through the top of the cabinet body, which utilizes the usually idle space above the cabinet body to provide more possibilities and space for line arrangement, and significantly improves the flexibility of line arrangement. This design enables the lines to be arranged and adjusted more flexibly according to the needs of the installation scene, especially in the case where the space in the cabinet body is limited or the line arrangement needs are variable. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a cabinet body three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0031] Figure 2 is Figure 1 is a cabinet body three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0032] Figure 3 is a PCS installation assembly three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0033] Figure 4 is an upper outgoing line assembly three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0034] Figure 5 is a ventilation assembly three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0035] Figure 6 is a cabinet body three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0036] Figure 7 is a top cover three-dimensional schematic view of the energy storage equipment of the embodiment of the application;

[0037] Figure 8 is a refrigeration assembly top view schematic view of the energy storage equipment of the embodiment of the application;

[0038] Figure 9 for Figure 4 An enlarged schematic diagram of A;

[0039] Figure 10 This is a three-dimensional schematic diagram of the ventilation assembly of the energy storage device according to an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] In the figure: 1-cabinet, 101-cavity, 2-PCS installation assembly, 201-support, 2011-fixing part, 2012-support part, 202-fastener, 3-air outlet assembly, 301-inlet, 302-outlet, 303-first channel, 304-second channel, 31-first part of the shell, 32-second part of the shell, 4-upper outlet assembly, 5-energy storage converter, 6-outlet box, 601-collection Wire hole, 602-wire outlet hole, 7-wire outlet mounting plate, 8-guide plate, 801-bottom bent part of the guide plate, 9-circuit breaker fixing plate, 901-side wing, 902-top bent part of the side wing, 11-support base plate, 12-ventilation and dustproof component, 13-refrigeration component, 14-ventilation component, 1401-air outlet shell, 1402-exhaust fan, 15-top cover, 1501-cable channel, 16-drive component. DETAILED DESCRIPTION

[0042] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0043] like Figures 1-10 As shown, the energy storage device provided in this embodiment includes a cabinet 1 and an energy storage converter 5 , as well as a PCS installation component 2 , an air outlet component 3 and an upper outlet component 4 all arranged on the top of the cabinet 1 .

[0044] The energy storage converter 5 is installed on the PCS installation component 2. The PCS installation component 2 is responsible for fixing the energy storage converter 5 on the top of the cabinet 1 to ensure that it does not produce relative displacement relative to the cabinet 1 or other components when the energy storage device is in use, thereby ensuring the reliability of the energy storage device.

[0045] By fixing the energy storage inverter 5 on the top of the cabinet 1, the PCS installation component 2 not only solves the stability problem of the installation of the energy storage inverter 5, but also provides a spatial layout for the air outlet component 3 to optimize the heat dissipation of the energy storage inverter 5, and leaves enough space for the upper outlet component 2 to arrange the lines.

[0046] The air outlet assembly 3 is arranged in front of and behind the PCS mounting assembly 2, and the air outlet assembly 3 comprises a first channel 303 for receiving air flow from the energy storage converter 5 and guiding the air flow out of the cabinet 1. External cold air can be used to blow towards the energy storage converter 5, so that the hot air generated by the energy storage converter 5 is guided out of the first channel 303.

[0047] The air outlet assembly 3 is an independent ventilation structure, mainly responsible for guiding the hot air flow out of the energy storage converter 5, ensuring that the air flow around the energy storage converter 5 can flow effectively, thereby helping to dissipate the heat generated by the energy storage converter 5 during operation. The air outlet assembly 3 cooperates with the PCS mounting assembly 2 and the energy storage converter 5 thereon to optimize the spatial layout and air flow guiding path, which helps to maintain the operation of the energy storage converter 5 within an ideal temperature range, ensuring the stability and long-term reliability of the energy storage device.

[0048] The PCS mounting assembly 2 is distributed to the left and right of the upper outlet assembly 4, and the upper outlet assembly 4 comprises an outlet box 6 mounted on the top surface of the cabinet 1, and a wiring hole 601 is provided between the bottom surface of the outlet box 6 and the top surface of the cabinet 1, and an outlet hole 602 is provided on the front surface of the outlet box 6.

[0049] The wiring hole 601 and the outlet hole 602 are connected to each other, and the lines inside or outside the cabinet 1 can be routed through the wiring hole 601 and the outlet hole 602, thereby achieving the purpose of routing the lines out of the top of the cabinet 1. After the cable of the energy storage battery inside the cabinet 1 is stretched out of the outlet box 6, it can be connected to the energy storage converter 5 on the top of the cabinet 1 to realize the conversion and storage of electric energy.

[0050] In this embodiment, the energy storage converter 5 is fixed by the PCS mounting assembly 2, ensuring that the energy storage converter 5 is stably mounted on the top of the cabinet 1, which not only improves the stability of the energy storage converter 5 itself, but also leaves space for the wiring of the upper outlet assembly 4, avoiding interference between the lines and the energy storage converter 5, and increasing the flexibility of the wiring.

[0051] In this embodiment, the PCS mounting assembly 2 comprises a support 201 and a fastener 202, the support 201 is fixed to the top of the cabinet 1, and the fastener 202 is fixed above the support 201 and forms a clamping space with the support 201. The energy storage converter 5 is installed in the clamping space, and at this time the energy storage converter 5 is clamped and fixed.

[0052] In this embodiment, the support 201 comprises a fixed part 2011 and a support part 2012 provided on the top of the fixed part 2011, and the energy storage converter 5 is installed on the support part 2012.

[0053] The fixing part 2011 is installed on the top of the cabinet body 1, and the main function of the fixing part 2011 is to fix the cabinet body 1 and support the supporting part 2012 at the same time, so that a space is left between the supporting part 2012 and the cabinet body 1.

[0054] The space left between the supporting part 2012 and the cabinet body 1 can ensure that when the energy storage converter 5 is installed on the supporting part 2012, a space is left between the bottom surface of the energy storage converter 5 and the top of the cabinet body 1, which is conducive to air circulation and thus helps to dissipate heat from the energy storage converter 5. With the assistance of the air outlet assembly 3, the heat dissipation effect of the energy storage converter 5 is better.

[0055] In this embodiment, two supporting parts 201 are provided, and they are distributed at opposite positions. The fastener 202 and the two supporting parts 201 together enclose a clamping space.

[0056] The energy storage converter 5 is placed on the two supporting parts 2012 and is pressed by the fastener 202. This fixing method can effectively fix the position of the energy storage converter 5 and also facilitates the disassembly and assembly of the energy storage converter 5 when needed.

[0057] In this embodiment, the supporting part 2012 has an L-shaped structure, the bottom side of which is used to support the energy storage converter 5, and the adjacent side is used to limit the horizontal movement of the energy storage converter 5. The adjacent side is connected and fixed with the fastener 202 to clamp and fix the energy storage converter 5, ensuring that the movement of the energy storage converter 5 is completely limited.

[0058] In this embodiment, the fastener 202 has a C-shaped structure and is relatively narrow. The two ends of the fastener 202 are connected with the corresponding supporting parts 2012 to enclose a clamping space. This can effectively and conveniently clamp the energy storage converter 5, and such a fixing method makes the PCS installation assembly 2 not too close to the surface of the energy storage converter 5, which is conducive to the heat dissipation of the surface of the energy storage converter 5.

[0059] In this embodiment, the air outlet assembly 3 includes an inlet 301 and an outlet 302. The inlet 301 faces the energy storage converter 5, and the outlet 302 faces the outside of the cabinet body 1.

[0060] The diameter of the outlet 302 is larger than that of the inlet 301, and the inlet 301 and the outlet 302 are connected through a first channel 303 to form an airflow guiding structure from small to large, which optimizes the airflow guiding around the energy storage converter 5. The airflow guiding structure is the air outlet assembly 3.

[0061] The inlet 301 is arranged towards the energy storage converter 5, so that the external cold air flows along the energy storage converter 5 and then directly flows out of the cabinet 1 through the air flow outlet structure formed by the inlet 301, the first channel 303 and the outlet 302. This design helps the cold air (air flow) to flow out of the cabinet 1 more smoothly after absorbing heat through the energy storage converter 5, and the air flow path from small to large can reduce the resistance of the air flow, so that the hot air can be discharged out of the cabinet 1 more quickly, thereby improving the heat dissipation efficiency.

[0062] In the embodiment, the front side of the outlet box 6 is detachably mounted with an outlet mounting plate 7, and a plurality of outlet holes 602 are arranged on the outlet mounting plate 7. The plurality of outlet holes 602 are distributed along the length direction of the outlet mounting plate 7.

[0063] This design can replace and disassemble the outlet mounting plate 7, which is convenient for adapting to different numbers and types of cables, ensures that different cables can be separated from each other and orderly stretched out in the preset direction when passing through the outlet mounting plate 7, and is also convenient for adjusting and maintaining the cables.

[0064] In the embodiment, the top left and right sides of the outlet box 6 are respectively provided with a guide plate 8, and a circuit breaker fixing plate 9 is inserted between the two guide plates 8.

[0065] When the circuit breaker fixing plate 9 is inserted between the two guide plates 8, the left and right sides of the circuit breaker fixing plate 9 respectively abut against the guide plates 8 adjacent thereto.

[0066] At this time, the guide plates 8 play a limiting and guiding role on the circuit breaker fixing plate 9, ensuring that the circuit breaker fixing plate 9 can only continue to be inserted or reversely separated along the insertion direction, so that the installation of the circuit breaker fixing plate 9 is rapid and accurate.

[0067] In the embodiment, the left and right sides of the circuit breaker fixing plate 9 are respectively provided with a side wing 901. The guide plate 8 has a C-shaped structure, and the bottom end thereof is bent upward to form a bottom end bent portion 801 of the guide plate 8, which can be attached to the outer wall of the side wing 901 with a large area when the circuit breaker fixing plate 9 is installed.

[0068] When the circuit breaker fixing plate 9 is inserted between the two guide plates 8, the outer walls of the two side wings 901 respectively abut against the corresponding guide plates 8.

[0069] In the embodiment, the top end of the side wing 901 is bent in the horizontal direction to form a top end bent portion 902 of the side wing 901, which is located below the top end of the guide plate 8 adjacent thereto, and the top end bent portion 902 can be attached to the bottom surface of the top end of the guide plate 8 when the circuit breaker fixing plate 9 is installed.

[0070] The outer wall of the bottom end bending part 801 of the guide plate 8 cooperates with the side wing 901, and the top end bending part 902 of the side wing 901 cooperates with the top end of the guide plate 8, so that the circuit breaker fixing plate 9 cannot be deviated leftward, rightward, upward or downward during installation, and the installation process is extremely stable and rapid.

[0071] In the embodiment, the energy storage device further comprises a support bottom plate 11, and the PCS installation assembly 2, the air outlet assembly 3 and the upper outgoing line assembly 4 are all installed on the top surface of the support bottom plate 11. The support bottom plate 11 is connected and fixed to the top of the cabinet 1.

[0072] The PCS installation assembly 2, the air outlet assembly 3 and the upper outgoing line assembly 4 can be installed on the support bottom plate 11, and then the support bottom plate 11 is installed on the top of the cabinet 1, so that too many processes are not required on the top of the cabinet 1, and the assembly process of the energy storage device can be simplified.

[0073] In the embodiment, the energy storage device further comprises a top cover 15 for covering the support bottom plate 11 and various assemblies thereon, and the top cover 15 is hinged to the top of the cabinet 1.

[0074] A driving assembly 16 is arranged between the top cover 15 and the cabinet 1, and the driving assembly 16 can control the opening and closing of the top cover 15 on the cabinet 1. The top cover 15 mainly protects the PCS installation assembly 2, the air outlet assembly 3 and the upper outgoing line assembly 4 on the support bottom plate 11.

[0075] In the embodiment, the cables inside and outside the cabinet 1 can be extended outward or inward through the cable passage 1501 on the top cover 15.

[0076] In the embodiment, the driving assembly 16 is a gas spring, which is mainly used to facilitate the turning of the top cover 15, so as to improve safety and convenience during maintenance.

[0077] In the embodiment, the air outlet assembly 3 is an integrally formed shell structure, opposite ends of the shell 3 are penetrated to form a first passage 303, and opposite ends of the first passage 303 are defined as an inlet 301 and an outlet 302, respectively. The shell 3 is divided into a shell first part 31 and a shell second part 32 according to the length direction thereof, the inlet 301 is arranged on the shell first part 31, and the outlet 302 is arranged on the shell second part 32.

[0078] The bottom surface of the shell first part 31 is a horizontal surface, and the bottom surface of the shell first part 31 is higher than the bottom surface of the shell second part 32. A cable accommodation space is left between the bottom surface of the shell first part 31 and the top surface of the support bottom plate 11, and the cable accommodation space is a second passage 304.

[0079] The horizontal design of the bottom surface of the first part 31 of the shell takes into account the small caliber design of the inlet 301 and also takes into account the management of the cables. It can be seen that the partition design of the air outlet assembly 3 optimizes air circulation and integrates cable management functions. Such a design fully considers the effective use of space, so that the second channel 304 can provide a layout path for the cables at the top of the cabinet 1 without affecting the main heat dissipation function of the air outlet assembly 3.

[0080] Through such a partition design, the air outlet assembly 3 not only realizes effective heat dissipation of the energy storage converter 5, but also optimizes the use of space at the top of the cabinet 1, avoiding the additional structural complexity that may be introduced due to cable arrangement.

[0081] In this embodiment, the cabinet 1 is internally provided with a cavity 101, and a plurality of energy storage batteries are mounted in the cavity 101 along the height direction. The outer side of the cabinet 1 is provided with a refrigeration assembly 13, which is used to deliver cooling gas to the cavity 101 to cool the energy storage batteries and other components in the cavity 101.

[0082] The top of the cavity 101 is provided with a ventilation assembly 14, which is used to absorb hot air in the cavity 101 and deliver it to the refrigeration assembly 13, so that the refrigeration assembly 13 converts the hot air into cold air and then blows it to the cavity 101, thereby cooling the energy storage batteries and other components in the cavity 101.

[0083] In this embodiment, the cavity 101 is provided with two cavities, which are arranged adjacent to each other on the left and right. The top of each cavity 101 is provided with a ventilation assembly 14, which includes an air outlet shell 1401, and an exhaust fan 1402 is arranged at the inlet of the air outlet shell 1401. Each cavity is independently vented and does not affect each other to meet the use of different users and application scenarios.

[0084] In this embodiment, the top of the cabinet 1 is provided with a plurality of ventilation and dustproof assemblies 12, which are arranged on the front and rear sides of the PCS installation assembly 2, the air outlet assembly 3 and the upper wire outlet assembly 4, respectively.

[0085] In this embodiment, the ventilation and dustproof assembly 12 can be a louver, which effectively blocks the entry of external environmental floating objects while not affecting the ventilation effect of the air outlet assembly 3.

[0086] In summary, in the present embodiment, the design of the PCS mounting assembly 2, the air outlet assembly 3, and the upper cable outlet assembly 4, as well as the overall modular layout, simplifies the installation process of the energy storage device, making the installation, disassembly, and maintenance of the above components more convenient. In particular, the configuration of the top cable outlet box 6 makes the access, exit, and adjustment of the cable more flexible and convenient. Moreover, the upper cable outlet assembly 4 provides better adaptability, allowing flexible line arrangement according to different installation environments. For example, in limited space or when the cable needs to be directly introduced into the adjacent equipment, the top cable outlet provides a direct and effective solution. This flexibility is particularly important for complex or changing installation environments

[0087] The present embodiment improves the stability and reliability of the energy storage device during transportation and use by optimizing the heat dissipation design and structural stability (such as the fixing method of the PCS mounting assembly 2). Effective heat dissipation management also helps to prolong the service life of key components such as the energy storage converter 5.

[0088] The design of the support bottom plate 11 and the top cover 15 provided by the present embodiment not only facilitates the integration and protection of the components, but also enables the device to be quickly adjusted according to different configuration requirements.

[0089] The above is only a further embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes within the scope disclosed by the present application according to the technical solutions and concepts of the present application, which shall fall within the protection scope of the present application.

Claims

1. An energy storage device, characterized in that: include: A cabinet (1) and an energy storage converter (5), wherein a PCS installation component (2), an air outlet component (3) and an upper outlet component (4) are respectively provided on the top of the cabinet (1), and the energy storage converter (5) is provided on the PCS installation component (2); The air outlet component (3) comprises: a first channel (303), the first channel (303) being used to guide the airflow from the direction of the energy storage converter (5) outward; The upper outlet assembly (4) comprises: an outlet box (6), a line collection hole (601) is provided between the outlet box (6) and the cabinet (1), an outlet hole (602) is passed through the outlet box (6), and the line collection hole (601) and the outlet hole (602) are connected, so that the circuits on the cabinet (1) can be wired through the line collection hole (601) and the outlet hole (602); The PCS installation assembly (2) comprises: a support member (201) and a fastener (202) for forming a clamping space, wherein the energy storage converter (5) is arranged in the clamping space; The support member (201) comprises: a fixing portion (2011), and a supporting portion (2012) provided on the top of the fixing portion (2011); the energy storage converter (5) is mounted on the supporting portion (2012); and the fixing portion (2011) is mounted on the top of the cabinet (1) so that a space is left between the energy storage converter (5) and the top of the cabinet (1); Two support members (201) are provided and are distributed at opposite positions, and the fastener (202) and the two support members (201) together enclose the clamping space; The air outlet component (3) comprises: an inlet (301), the inlet (301) being used to introduce the airflow; an outlet (302), the diameter of the outlet (302) being larger than the diameter of the inlet (301), and the outlet (302) facing outside the cabinet (1); The inlet (301) and the outlet (302) are connected through the first channel (303) to form an airflow outlet structure from small to large; The energy storage device further comprises: a supporting base plate (11), the PCS installation assembly (2), the air outlet assembly (3) and the upper outlet assembly (4) are all arranged on the supporting base plate (11), and the supporting base plate (11) is fixed to the top of the cabinet (1); The energy storage device further comprises: a top cover (15), the top cover (15) being hinged to the top of the cabinet (1); a drive assembly (16), the drive assembly (16) being arranged between the top cover (15) and the cabinet (1), the drive assembly (16) being used to control the opening and closing of the top cover (15); the energy storage device further comprises: a cavity (101), the cavity (101) being arranged inside the cabinet (1), the cavity (101) being used to place a plurality of energy storage batteries; a refrigeration assembly (13), the refrigeration assembly (13) being arranged outside the cabinet (1), the refrigeration assembly (13) being used to transport cooling gas to the cavity (101); and a ventilation assembly (14), the ventilation assembly (14) being arranged at the top of the cavity (101), the ventilation assembly (14) being used to absorb hot air in the cavity (101) and transport the hot air to the refrigeration assembly (13) for cooling.

2. The energy storage device according to claim 1, characterized in that A detachable outlet mounting plate (7) is provided on one side of the outlet box (6), and a plurality of outlet holes (602) are provided, and all of them are arranged on the outlet mounting plate (7).

3. The energy storage device according to claim 2, characterized in that A guide plate (8) is provided on opposite sides of the top of the outlet box (6), and a circuit breaker fixing plate (9) is inserted between the guide plates (8) on both sides, wherein opposite sides of the circuit breaker fixing plate (9) abut against the guide plates (8) adjacent thereto.

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