Energy storage battery enclosure and energy storage system

Abstract

An energy storage battery enclosure and an energy storage system. The energy storage battery enclosure comprises a battery compartment, an electrical compartment and a temperature control system compartment which are mutually independent of each other. The battery compartment comprises cavity structures used for defining accommodating cavities. The cavity structures each comprise: a cavity component, comprising an inner cavity and an outer cavity spaced apart from the inner cavity, the outer cavity being located on the side of the inner cavity facing away from the accommodating cavity; a support component, comprising two support beams which are respectively connected to upper and lower sides of the cavity component; and a fireproof thermal insulation component, located between the inner cavity and the outer cavity, the upper end of the fireproof thermal insulation component extending into one of the two support beams, and the lower end of the fireproof thermal insulation component extending into the other one of the two support beams, so as to hamper heat transfer between the inside of the battery compartment and the outside of the battery compartment. The technical solution of the present utility model solves the problem of bad fire resistance of energy storage battery enclosures in the prior art.

Description

Energy storage battery box and energy storage system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 13, 2023, with application number 202323411480.4 and invention name “Energy Storage Battery Box and Energy Storage System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The utility model relates to the technical field of energy storage batteries, and in particular to an energy storage battery box and an energy storage system. Background Art

[0003] As the energy storage market continues to grow, fires in energy storage equipment are a common occurrence. The safety and protection design of energy storage battery systems has always been a key concern in the industry. Since energy storage power stations are often located in remote areas, fires can take longer for firefighters to arrive. To ensure customer safety and property security, the impact of a fire must be minimized to a single energy storage device.

[0004] In the existing technology, the thermal insulation and fire prevention effects are generally achieved by setting inner and outer cavities around the battery compartment to reduce the impact of fire. However, multiple connection contact positions are set between the inner and outer cavities along the circumference of the battery compartment. In this way, when a fire occurs, the inner and outer cavities will transfer heat from the inside of the battery compartment to the outside of the battery compartment through the thermal bridge effect (multiple connection contact positions), resulting in poor fire resistance of the battery box.

[0005] Summary of the Invention

[0006] The main purpose of the utility model is to provide an energy storage battery box and an energy storage system to solve the problem of poor fire resistance of energy storage battery boxes in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model provides an energy storage battery box, including a battery compartment, an electrical compartment and a temperature control system compartment that are independent of each other, the battery compartment including a cavity structure for enclosing a accommodating cavity, the cavity structure including: a cavity member, including an inner cavity and an outer cavity spaced apart from the inner cavity, the outer cavity being located on the side of the inner cavity away from the accommodating cavity; a support member, including two support beams respectively connected to the upper and lower sides of the cavity member; a fireproof and heat-insulating member, located between the inner cavity and the outer cavity, the upper end of the fireproof and heat-insulating member extending into one of the two support beams, and the lower end of the fireproof and heat-insulating member extending into the other of the two support beams to hinder heat transfer between the inside and outside of the battery compartment.

[0008] Furthermore, the support beam is a cylindrical structure having an installation channel, and an opening is provided on the side of the support beam facing the cavity component, and the fireproof and heat-insulating component extends into the installation channel through the opening.

[0009] Furthermore, the fireproof and heat-insulating component includes: a plurality of main fireproof and heat-insulating panels, which are sequentially spliced ​​and arranged along the circumference of the accommodating cavity; and secondary fireproof and heat-insulating panels, with the joints between two adjacent main fireproof and heat-insulating panels being covered with secondary fireproof and heat-insulating panels.

[0010] Furthermore, the secondary fireproof insulation board is located between the main fireproof insulation board and the inner cavity. The inner cavity includes an inner wall panel and a plurality of inner supports connected to the inner wall panel. Along the circumference of the accommodating cavity, internal supports are provided on both sides of the opposite sides of the secondary fireproof insulation board to limit the displacement of the secondary fireproof insulation board.

[0011] Furthermore, the outer cavity includes an outer wall panel and a plurality of outer supports for supporting the outer wall panel, and each outer support is located on the side of the outer wall panel facing the fireproof and heat-insulating component; the inner cavity includes an inner wall panel and a plurality of inner supports for supporting the inner wall panel, and the inner supports are located on the side of the inner wall panel facing the fireproof and heat-insulating component, and the inner supports and the outer supports are pressed against the fireproof and heat-insulating component.

[0012] Furthermore, the upper end of the inner support member extends into one of the two support beams, and the lower end of the inner support member extends into the other of the two support beams; and / or, the upper end of the outer support member extends into one of the two support beams, and the lower end of the outer support member extends into the other of the two support beams.

[0013] Furthermore, the inner wall panel includes multiple panel segments, which are spaced apart along the arrangement direction of the multiple inner support members. A main support member is provided on at least one side of the panel segment, and the main support member is located on the side of the inner support member away from the outer cavity.

[0014] Furthermore, the inner cavity is provided with a vent hole communicating with the accommodating cavity; and / or the outer cavity is provided with a vent hole communicating with the outside of the battery compartment.

[0015] Furthermore, a plurality of ventilation holes are provided on one side of the support beam facing the accommodating cavity, and the ventilation holes are communicated with the accommodating cavity.

[0016] According to another aspect of the present invention, the present invention provides an energy storage system, including an energy storage battery box and an energy storage battery located in the battery compartment.

[0017] By applying the technical solution of the present invention, compared with the prior art in which the inner cavity and the outer cavity directly transfer heat through the thermal bridge effect, in this embodiment, a fireproof and heat-insulating component is arranged between the inner cavity and the outer cavity, and the upper end of the fireproof and heat-insulating component is extended into one of the two support beams, and the lower end of the fireproof and heat-insulating component is extended into the other of the two support beams. In this way, when a fire occurs in the battery compartment, on the one hand, the heat transfer path can be from the inner cavity of the battery compartment to the fireproof and heat-insulating component, and then to the outer cavity, which can avoid the heat being directly transferred from the inner cavity to the outer cavity. On the other hand, extending the fireproof and heat-insulating component into the support beam can block part of the heat transferred by the support beam. In this way, the temperature of the outer cavity of the energy storage battery box is controlled to the greatest extent, so as to improve the fire resistance and fire resistance time of the energy storage battery box, thereby ensuring the normal operation of other energy storage equipment and the safety of personnel, and buying more time for firefighters and equipment to arrive at the scene, thereby reducing customer property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] FIG1 is a schematic structural diagram of a cavity structure of an energy storage battery box according to an embodiment of the present invention;

[0020] FIG2 is a schematic structural diagram showing the cavity structure of FIG1 from another angle;

[0021] FIG3 shows a cross-sectional view of the cavity structure of FIG1 at an angle;

[0022] FIG4 shows an enlarged view of point A of the cavity structure of FIG3 ;

[0023] FIG5 shows an enlarged view of point B of the cavity structure of FIG3 ;

[0024] FIG6 shows a cross-sectional view of the cavity structure of FIG1 from another angle;

[0025] FIG7 shows an enlarged view of the cavity structure at point C in FIG6 ;

[0026] FIG8 shows an enlarged view of the cavity structure at point D in FIG6 ;

[0027] FIG9 shows an enlarged view of the cavity structure at point E in FIG6 ;

[0028] FIG10 shows a schematic structural diagram of the cavity structure of FIG2 with the inner wall panels removed;

[0029] FIG11 shows a front view of the cavity structure of FIG10 ;

[0030] FIG12 shows a schematic structural diagram of the cavity structure of FIG2 after removing two main support members.

[0031] Among them, the above-mentioned drawings include the following figure marks: 10, inner cavity; 11, inner wall panel; 12, inner support; 13, main support; 14, panel section; 20, outer cavity; 21, outer wall panel; 22, outer support; 30, support beam; 31, installation channel; 32, opening; 40, fireproof and heat-insulating component; 41, main fireproof and heat-insulating board; 42, secondary fireproof and heat-insulating board; 50, vent. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, in the embodiment of the present invention, the thermal bridge effect refers to the heat being directly transferred from the inner cavity 10 to the outer cavity 20 .

[0034] It should be noted that, in the embodiment of the present invention, the circumferential direction of the accommodating cavity refers to the length direction of the cavity structure in FIG. 1 .

[0035] As shown in Figures 1 to 12, an embodiment of the present invention provides an energy storage battery box. The energy storage battery box includes a battery compartment, an electrical compartment, and a temperature control system compartment that are independent of each other. The battery compartment includes a cavity structure for enclosing a receiving cavity. The cavity structure includes a cavity member, a support member, and a fireproof and heat-insulating member 40. Among them, the cavity member is used to enclose the receiving cavity. The cavity member includes an inner cavity 10 and an outer cavity 20 spaced apart from the inner cavity 10. The outer cavity 20 is located on the side of the inner cavity 10 away from the receiving cavity. The support member includes two support beams 30 respectively connected to the upper and lower sides of the cavity member. The fireproof and heat-insulating member 40 is located between the inner cavity 10 and the outer cavity 20. The upper end of the fireproof and heat-insulating member 40 extends into one of the two support beams 30, and the lower end of the fireproof and heat-insulating member 40 extends into the other of the two support beams 30 to hinder heat transfer between the inside and outside of the battery compartment.

[0036] In the above technical solution, compared with the prior art in which the inner cavity 10 and the outer cavity 20 directly transfer heat through the thermal bridge effect, in this embodiment, the fireproof heat-insulating component 40 is arranged between the inner cavity 10 and the outer cavity 20, and the upper end of the fireproof heat-insulating component 40 extends into one of the two support beams 30, and the lower end of the fireproof heat-insulating component 40 extends into the other support beam 30 of the two support beams 30. In this way, when a fire occurs in the battery compartment, on the one hand, the heat transfer path can be from the inner cavity 10 of the battery compartment to the outer cavity 20. The fireproof and heat-insulating component 40, and then to the outer cavity 20, can prevent heat from being directly transferred from the inner cavity 10 to the outer cavity 20. On the other hand, extending the fireproof and heat-insulating component 40 into the support beam 30 can block part of the heat transferred by the support beam 30. In this way, the temperature of the outer cavity 20 of the energy storage battery box is controlled to the greatest extent, so as to improve the fire resistance and fire resistance time of the energy storage battery box, thereby ensuring the normal operation of other energy storage equipment and the safety of personnel, buying more time for firefighters and equipment to arrive at the scene, and reducing customer property losses.

[0037] Specifically, in the embodiment of the present invention, the energy storage battery box adopts a compartment design, and the battery compartment, electrical compartment and temperature control system compartment are arranged independently of each other. In this way, when a fire occurs in the battery compartment, it can avoid affecting the electrical compartment and temperature control system compartment, and the impact of the fire can be reduced to a single battery compartment, thereby ensuring the personal safety and property safety of customers.

[0038] Specifically, in an embodiment of the present invention, the energy storage battery box includes a temperature control system compartment, a battery compartment, an electrical compartment and a battery compartment arranged in sequence from left to right, and the partition walls between each battery compartment and other compartments and the back of the battery compartment all use the above-mentioned cavity structure. The battery compartment is generally composed of three cavity structures connected and arranged at an angle and a door structure.

[0039] It should be noted that, in the embodiment of the present invention, the energy storage battery box is a container for placing the subunits of the energy storage system.

[0040] It should be noted that, in the embodiment of the present invention, the battery compartment is a compartment for placing the battery pack and various corresponding electrical equipment, and the battery compartment is a sealed compartment.

[0041] Specifically, in the embodiment of the present invention, the electrical compartment is a compartment that realizes the functions of DC convergence and auxiliary power supply for energy storage equipment, and the electrical compartment is a compartment that communicates with the outside world.

[0042] Specifically, in an embodiment of the present invention, the temperature control system compartment is used to house a thermal management unit for dissipating heat to the battery compartment, and the temperature control system compartment is a compartment communicated with the outside world.

[0043] As shown in Figures 4 and 5 , in an embodiment of the present invention, the support beam 30 is a cylindrical structure having a mounting channel 31. An opening 32 is provided on the side of the support beam 30 facing the cavity member, and the fireproof and heat-insulating member 40 extends into the mounting channel 31 through the opening 32. Thus, the fireproof and heat-insulating member 40 disposed within the mounting channel 31 reduces the amount of heat transferred directly from the support beam 30 to the outer cavity 20, thereby lowering the temperature at the connection between the outer cavity 20 and the support beam 30.

[0044] Specifically, in the embodiment of the present invention, the support beam 30 is a “C”-section steel, so that the support beam 30 is conveniently connected to the cavity component and the fireproof and heat-insulating component 40 is conveniently extended into the installation channel 31 .

[0045] As shown in Figures 6 and 8, in an embodiment of the present invention, the fireproof and heat-insulating component 40 includes: a plurality of main fireproof and heat-insulating panels 41, which are spliced ​​and arranged in sequence along the circumference of the accommodating cavity; and secondary fireproof and heat-insulating panels 42, wherein the joint between two adjacent main fireproof and heat-insulating panels 41 is covered with the secondary fireproof and heat-insulating panels 42.

[0046] In the above technical solution, by setting up a fireproof and heat-insulating component 40, the heat transfer between the inner cavity 10 and the outer cavity 20 can be reduced, thereby preventing heat from being transferred from the accommodating cavity to the outer cavity, thereby improving the fireproof and heat-insulating performance of the energy storage battery box; by making the secondary fireproof and heat-insulating board 42 cover the joint between the two adjacent main fireproof and heat-insulating boards 41, heat leakage at the joint between the two adjacent main fireproof and heat-insulating boards 41 can be avoided, thereby increasing the fireproof and heat-insulating performance of the energy storage battery box.

[0047] Specifically, in the embodiment of the present invention, the fireproof and heat-insulating component 40 is made of a fire-resistant and heat-insulating material.

[0048] As shown in Figures 6 and 8, in an embodiment of the present invention, the secondary fireproof heat insulation board 42 is located between the main fireproof heat insulation board 41 and the inner cavity 10. The inner cavity 10 includes an inner wall panel 11 and a plurality of inner support members 12 connected to the inner wall panel 11. Along the circumference of the accommodating cavity, inner support members 12 are provided on opposite sides of the secondary fireproof heat insulation board 42 to limit the displacement of the secondary fireproof heat insulation board 42.

[0049] In the above technical solution, by setting the internal support member 12, on the one hand, the internal support member 12 can support the inner cavity 10, thereby improving the overall strength of the inner cavity 10; on the other hand, the internal support member 12 can limit the secondary fireproof heat insulation board 42, so that the joints of the two adjacent main fireproof heat insulation boards 41 are tightly covered by the secondary fireproof heat insulation board 42, thereby increasing the fireproof and heat-insulating performance of the energy storage battery box.

[0050] Preferably, in an embodiment of the present invention, the inner wall panel 11 is connected to the inner support member 12 by welding.

[0051] As shown in Figures 6 to 9 , in an embodiment of the present invention, the outer cavity 20 includes an outer wall panel 21 and a plurality of outer supports 22 for supporting the outer wall panel 21. Each outer support 22 is located on the side of the outer wall panel 21 facing the fireproof and heat-insulating member 40. Thus, the outer supports 22 and the outer wall panel 21 form a complete outer cavity 20. Furthermore, the outer supports 22 provide support for the outer cavity 20, thereby improving the overall strength of the outer cavity 20.

[0052] Specifically, in the embodiment of the present invention, the exterior wall panel 21 is connected to the exterior support member 22 by welding.

[0053] As shown in Figures 6 to 9, in an embodiment of the present invention, the inner cavity 10 includes an inner wall panel 11 and a plurality of inner supports 12 for supporting the inner wall panel 11. The inner supports 12 are located on the side of the inner wall panel 11 facing the fireproof and heat-insulating member 40. The inner supports 12 and the outer supports 22 are pressed against the fireproof and heat-insulating member 40. In this way, the inner supports 12 can support the inner cavity 10, thereby improving the overall strength of the inner cavity 10. The inner supports 12 and the outer supports 22 can jointly support the fireproof and heat-insulating member 40.

[0054] Furthermore, in an embodiment of the present invention, the inner support member 12 and the outer support member 22 are arranged on both sides of the fireproof and heat-insulating component 40, thereby avoiding direct contact between the inner support member 12 and the outer support member 22. In this way, the fireproof and heat-insulating component 40 can block the heat transfer between the inner support member 12 and the outer support member 22, play the role of breaking the thermal bridge effect, and thus improve the fire resistance of the energy storage battery box.

[0055] As shown in Figures 3 to 9, in an embodiment of the present invention, the upper end of the inner support member 12 extends into one of the two support beams 30, and the lower end of the inner support member 12 extends into the other of the two support beams 30. This allows, on the one hand, a tighter connection between the inner cavity 10 and the support beam 30, and, on the other hand, the inner support member 12 extending into the support beam 30 can support the fireproof and heat-insulating member 40.

[0056] Preferably, in the embodiment of the present invention, the contact surfaces of the inner support member 12 and the support beam 30 are connected by welding.

[0057] As shown in Figures 3 to 9, in an embodiment of the present invention, the upper end of the outer support member 22 extends into one of the two support beams 30, and the lower end of the outer support member 22 extends into the other of the two support beams 30. This allows, on the one hand, a tighter connection between the outer cavity 20 and the support beam 30, and, on the other hand, the outer support member 22 extending into the support beam 30 can support the fireproof and heat-insulating member 40.

[0058] Furthermore, in an embodiment of the present invention, the inner support member 12 and the outer support member 22 are respectively connected to the support beam 30, and a filling cavity can be formed between the inner cavity 10 and the outer cavity 20, so that the fireproof and heat-insulating component 40 can be arranged in the filling cavity. In this way, the fireproof and heat-insulating component 40 can block the heat transfer between the inner cavity 10 and the outer cavity 20, play the role of breaking the thermal bridge effect, thereby improving the fire resistance of the energy storage battery box.

[0059] Preferably, in the embodiment of the present invention, the contact surfaces of the outer support member 22 and the support beam 30 are connected by welding.

[0060] As shown in Figures 2 and 6 , in an embodiment of the present invention, the interior wall panel 11 includes a plurality of panel segments 14, which are spaced apart along the arrangement direction of the plurality of inner support members 12. A main support member 13 is provided on at least one side of the panel segment 14. The main support member 13 is located on the side of the inner support member 12 facing away from the outer cavity 20. The provision of the main support member 13 thus improves the overall strength of the interior wall panel 11.

[0061] Preferably, in an embodiment of the present invention, the plate segment 14 is connected to two adjacent main support members 13 by welding; or, the plate segment 14 and two adjacent main support members 13 are integrally formed.

[0062] As shown in Figure 12, in an embodiment of the present invention, a vent hole 50 communicating with the accommodating cavity is provided on the inner cavity 10. Thus, when a fire occurs in the battery compartment, causing the gas between the inner cavity 10 and the outer cavity 20 to expand upon exposure to heat, and the fireproof and heat-insulating member 40 to decompose upon exposure to heat and release gas, the gas can enter the accommodating cavity through the hole in the inner cavity 10, thereby preventing an increase in the gas pressure between the inner cavity 10 and the outer cavity 20, thereby balancing the internal and external pressure difference of the cavity structure caused by high temperature, and further preventing deformation and damage to the cavity structure. In this way, the fire resistance of the entire energy storage device can be extended, the safety of the energy storage device can be improved, and safety impacts on other energy storage devices and personnel can be avoided.

[0063] Specifically, in the embodiment of the present invention, the inner wall panel 11 and the inner support member 12 in the inner cavity 10 are both provided with ventilation holes 50 .

[0064] Specifically, in an embodiment of the present invention, a vent 50 communicating with the outside of the battery compartment is provided on the outer cavity 20. Thus, when a fire occurs in the battery compartment, causing the gas between the inner cavity 10 and the outer cavity 20 to expand upon exposure to heat, and the fireproof and heat-insulating member 40 to decompose upon exposure to heat and release gas, the gas can escape to the outside of the battery compartment through the vent 50 on the outer cavity 20, thereby preventing an increase in the gas pressure between the inner cavity 10 and the outer cavity 20 and balancing the internal and external pressure difference of the cavity structure caused by high temperature, thereby avoiding deformation and damage to the cavity structure. This can extend the fire resistance of the entire energy storage device, improve the safety of the energy storage device, and avoid safety impacts on other energy storage devices and personnel.

[0065] Specifically, in the embodiment of the present invention, the outer wall panels 21 and the outer support members 22 in the outer cavity 20 are both provided with ventilation holes 50 .

[0066] As shown in Figure 12, in an embodiment of the present invention, a plurality of vent holes 50 are provided on the side of the support beam 30 facing the accommodating cavity, and the vent holes 50 are in communication with the accommodating cavity. This allows, when a fire in the battery compartment causes the gas within the support beam 30 to expand upon exposure to heat, and when the fireproof and heat-insulating components 40 within the support beam 30 decompose upon exposure to heat and release gas, the gas can enter the accommodating cavity through the vent holes 50 on the support beam 30, thereby preventing an increase in pressure within the support beam 30 and balancing the pressure differential between the inside and outside of the support beam 30 caused by high temperatures, thereby preventing deformation or damage to the support beam 30.

[0067] It should be noted that in the embodiment of the present invention, ventilation holes are provided on at least one side of the main support member 13 along the length of the support beam 30, and the ventilation holes 50 are sequentially spaced along the height direction of the cavity structure. The side of the main support member 13 facing the support beam 30 is provided with ventilation holes that communicate with the interior of the support beam 30. In this way, excess gas in the support beam 30 can enter the accommodating cavity through the main support member 13.

[0068] It should be noted that, in the embodiment of the present invention, the main support member 13 is fixedly connected to the support beam 30 . Preferably, the main support member 13 is welded to the support beam 30 .

[0069] An embodiment of the present invention provides an energy storage system, which includes the above-mentioned energy storage battery box and energy storage batteries located in the battery compartment.

[0070] Specifically, in an embodiment of the present invention, the energy storage system further includes power distribution equipment, temperature control equipment, and fire-fighting equipment arranged in the energy storage battery box.

[0071] The above energy storage system has all the advantages of the above energy storage battery box, which will not be described here in detail.

[0072] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: compared with the prior art in which the inner cavity and the outer cavity directly transfer heat through the thermal bridge effect, in this embodiment, a fireproof and heat-insulating component is arranged between the inner cavity and the outer cavity, and the upper end of the fireproof and heat-insulating component is extended into one of the two support beams, and the lower end of the fireproof and heat-insulating component is extended into the other of the two support beams. In this way, when a fire occurs in the battery compartment, on the one hand, the heat transfer path can be from the inner cavity of the battery compartment to the fireproof and heat-insulating component, and then to the outer cavity, which can avoid heat being directly transferred from the inner cavity to the outer cavity. On the other hand, extending the fireproof and heat-insulating component into the support beam can block part of the heat transferred by the support beam. In this way, the temperature of the outer cavity of the energy storage battery box is controlled to the greatest extent, so as to improve the fire resistance and fire resistance time of the energy storage battery box, thereby ensuring the normal operation of other energy storage equipment and the safety of personnel, and buying more time for firefighters and equipment to arrive at the scene, thereby reducing customer property losses.

[0073] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An energy storage battery box, characterized in that: It includes a battery compartment, an electrical compartment and a temperature control system compartment which are independent of each other. The battery compartment includes a cavity structure for enclosing a receiving cavity. The cavity structure includes: A cavity component, comprising an inner cavity (10) and an outer cavity (20) spaced apart from the inner cavity (10), wherein the outer cavity (20) is located on a side of the inner cavity (10) away from the accommodating cavity; A supporting member, comprising two supporting beams (30) respectively connected to the upper and lower sides of the cavity member; A fireproof heat-insulating component (40) is located between the inner cavity (10) and the outer cavity (20), wherein the upper end of the fireproof heat-insulating component (40) extends into one of the two support beams (30), and the lower end of the fireproof heat-insulating component (40) extends into the other of the two support beams (30), so as to hinder heat transfer between the inside of the battery compartment and the outside of the battery compartment.

2. The energy storage battery box according to claim 1, characterized in that: The support beam (30) is a cylindrical structure having an installation channel (31), and an opening (32) is provided on a side of the support beam (30) facing the cavity component, and the fireproof and heat-insulating component (40) extends into the installation channel (31) through the opening (32).

3. The energy storage battery box according to claim 1, characterized in that: The fireproof and heat-insulating component (40) comprises: A plurality of main fireproof and heat-insulating panels (41) are sequentially spliced ​​and arranged along the circumference of the accommodating cavity; A secondary fireproof heat insulation board (42), the joint between two adjacent main fireproof heat insulation boards (41) is covered with the secondary fireproof heat insulation board (42).

4. The energy storage battery box according to claim 3, characterized in that: The secondary fireproof heat insulation board (42) is located between the main fireproof heat insulation board (41) and the inner cavity (10), and the inner cavity (10) includes an inner wall board (11) and a plurality of inner support members (12) connected to the inner wall board (11). Along the circumference of the accommodating cavity, the inner support members (12) are provided on opposite sides of the secondary fireproof heat insulation board (42) to limit the displacement of the secondary fireproof heat insulation board (42).

5. The energy storage battery box according to claim 1, characterized in that: The outer cavity (20) comprises an outer wall panel (21) and a plurality of outer support members (22) for supporting the outer wall panel (21), wherein each of the outer support members (22) is located on a side of the outer wall panel (21) facing the fireproof and heat-insulating component (40); The inner cavity (10) comprises an inner wall panel (11) and a plurality of inner support members (12) for supporting the inner wall panel (11); the inner support members (12) are located on a side of the inner wall panel (11) facing the fireproof and heat-insulating component (40); and the inner support members (12) and the outer support members (22) are pressed against the fireproof and heat-insulating component (40).

6. The energy storage battery box according to claim 5, characterized in that: The upper end of the inner support member (12) extends into one of the two support beams (30), and the lower end of the inner support member (12) extends into the other of the two support beams (30); and / or, the upper end of the outer support member (22) extends into one of the two support beams (30), and the lower end of the outer support member (22) extends into the other of the two support beams (30).

7. The energy storage battery box according to claim 5, characterized in that: The inner wall panel (11) comprises a plurality of panel segments (14), and the plurality of panel segments (14) are arranged at intervals along the arrangement direction of the plurality of inner support members (12). A main support member (13) is provided on at least one side of the panel segment (14), and the main support member (13) is located on a side of the inner support member (12) facing away from the outer cavity (20).

8. The energy storage battery box according to any one of claims 1 to 7, characterized in that: The inner cavity (10) is provided with a vent hole (50) communicating with the accommodating cavity; and / or the outer cavity (20) is provided with a vent hole (50) communicating with the outside of the battery compartment.

9. The energy storage battery box according to any one of claims 1 to 7, characterized in that: A plurality of vent holes (50) are provided on one side of the support beam (30) facing the accommodating cavity, and the vent holes (50) are in communication with the accommodating cavity.

10. An energy storage system, characterized in that: It comprises the energy storage battery box according to any one of claims 1 to 9 and an energy storage battery located in the battery compartment.

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