Energy storage cabinet and electric device

Abstract

An energy storage cabinet and an electric device. The energy storage cabinet comprises a cabinet body having a first cavity and a second cavity, wherein the first cavity is used for accommodating a battery module and a cooling medium, and the cooling medium is in direct contact with the battery module; and the second cavity serves as an electronic control compartment.

Description

Energy storage cabinet and electrical equipment

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202411397589.3, filed on September 30, 2024, and entitled "Energy storage cabinet and electrical equipment", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy storage cabinets, in particular, to an energy storage cabinet and electrical equipment. BACKGROUND

[0004] The energy storage cabinet needs to release energy and store energy, and the heat is relatively serious. In the related art, a pipeline is usually arranged in the energy storage cabinet, and the heat exchange of the cooling liquid in the pipeline is used to achieve the heat dissipation effect. However, in this scheme, the structure of the pipeline is complex, occupies a large space, and the heat dissipation effect is poor. SUMMARY

[0005] The purpose of the present disclosure is to provide an energy storage cabinet and electrical equipment to solve the problem of poor heat dissipation effect of the energy storage cabinet in the related art.

[0006] In order to achieve the above-mentioned purpose, the present disclosure provides an energy storage cabinet, which comprises a cabinet body, the cabinet body has a first cavity and a second cavity, wherein the first cavity is used to accommodate a battery module and a cooling medium, the cooling medium is in direct contact with the battery module, and the second cavity is an electrical control bin.

[0007] Optionally, a partition is arranged in the first cavity.

[0008] Optionally, a partition is arranged in the cabinet body, and the partition separates the cavity of the cabinet body into the first cavity and the second cavity.

[0009] Optionally, the cabinet body comprises an outer frame and an inner container arranged in the outer frame, a partition is arranged in the inner container, and the partition and part of the cavity of the inner container form a closed first cavity.

[0010] Optionally, the partition comprises a bin plate fixed on the inner wall of the cabinet body and a cover plate connected with the bin plate, the cover plate is arranged on the side of the bin plate close to the first cavity, so that the cooling medium in the first cavity can press the cover plate on the bin plate.

[0011] Optionally, the bin plate and the cover plate partially overlap in the thickness direction, and the bin plate and the cover plate are lap-jointed.

[0012] Optionally, the partition plate is a frame structure fixed on the inner wall of the cabinet body, and a surface of the partition plate used for abutting with the cover plate is a first inclined surface, and the first inclined surface is configured to taper the distance between two vertical columns of the frame structure in a direction from the inner side of the first cavity to the outer side of the first cavity.

[0013] Optionally, the cover plate has a second inclined surface matched with the first inclined surface, and the second inclined surface is configured to taper the width of the cover plate in a direction from the inner side of the first cavity to the outer side of the first cavity.

[0014] Optionally, the partition plate is a frame structure fixed on the inner wall of the cabinet body, and one of the surfaces of the frame structure and the cover plate abutting with each other is provided with a guide groove, and the other is provided with a protrusion matched with the guide groove.

[0015] Optionally, the partition plate is a frame structure fixed on the inner wall of the cabinet body, and a surface of the partition plate used for abutting with the cover plate is a plane, and the thickness of the plane is configured to make the plane coplanar with the surface where the cover plate is located.

[0016] Optionally, the partition plate and the cover plate are located in the same plane.

[0017] Optionally, the partition plate is a frame structure fixed on the inner wall of the cabinet body, and the plane where the frame structure is located is not coplanar with the plane where the cover plate is located.

[0018] Optionally, the cabinet body is provided with a socket, and the cover plate is inserted into the cabinet body from the socket and connected with the partition plate.

[0019] Optionally, a sealing element is arranged at the position where the partition plate and the cover plate abut with each other.

[0020] Optionally, the overlapping part of the partition plate and the cover plate in the thickness direction forms an abutting surface, at least one of the abutting surfaces of the two is provided with a groove, and the sealing element is a rubber strip arranged in the groove.

[0021] Optionally, the abutting surfaces of the partition plate and the cover plate are respectively provided with the groove and the rubber strip, and the groove and the rubber strip of the two are arranged staggered in the width direction of the abutting surface to form multi-stage sealing.

[0022] Optionally, a first groove is arranged on the abutting surface of the partition plate, and the sealing element comprises a first rubber strip arranged in the first groove.

[0023] Optionally, a second groove is arranged on the abutting surface of the cover plate, and the sealing element comprises a second rubber strip arranged in the second groove.

[0024] Optionally, the second grooves are arranged on both sides of the first groove, and the second adhesive strips are arranged in the second grooves.

[0025] Optionally, a protrusion is arranged on the overlapping surface of the cover plate, the protrusion is arranged between the two second grooves, and the protrusion is used for being crimped on the first adhesive strip.

[0026] Optionally, a fastening hole is arranged on the partition plate at a position corresponding to the first groove, and the partition plate and the cover plate are connected by a fastener penetrating through the fastening hole and the first adhesive strip.

[0027] Optionally, a gap is arranged between the end of the cover plate and the inner wall of the cabinet body, a notch is further arranged on the overlapping surface of the cover plate and communicating the gap and the second groove, and an adhesive is arranged in the gap and the notch.

[0028] Optionally, the sealing member and the fastener are a plurality of members arranged at intervals along the outer periphery of the partition plate.

[0029] Optionally, the battery module and the top wall of the cabinet body are arranged at intervals, the cooling medium is a cooling liquid, the liquid level of the cooling liquid is arranged between the top surface of the battery module and the top wall of the cabinet body, and an air cavity is formed between the cooling liquid and the top wall of the cabinet body.

[0030] Optionally, the partition member is provided with a gas permeable valve communicating with the air cavity.

[0031] Optionally, a first detection element for acquiring the liquid level information of the cooling liquid is arranged in the first cavity.

[0032] Optionally, the energy storage cabinet further comprises a rotatable cabinet door, and the cabinet door is used for opening or closing the second cavity.

[0033] Optionally, at least one of an air conditioning module, a battery management module and a power distribution module is arranged in the second cavity.

[0034] Optionally, a liquid supplement bin is further arranged in the second cavity, an inlet and an outlet are arranged on the partition member in the cabinet body and communicating with the first cavity, and the inlet and the outlet are connected with the liquid supplement bin through pipelines.

[0035] According to a second aspect of the present disclosure, a power utilization device is provided, comprising the above-mentioned energy storage cabinet.

[0036] In the energy storage cabinet provided by the present disclosure, the internal cavity of the cabinet body is divided into a battery module cooling compartment and an electric control compartment. The cooling medium in the first cavity can directly contact the battery module to cool and dissipate heat of the battery module, thereby improving the cooling effect of the battery module while ensuring the sealing property. The second cavity is the electric control compartment. The battery management module, power distribution module, air conditioning module and the like that need to be repaired can be placed in the second cavity. Each module in the second cavity can be directly repaired to meet the repair requirements of the battery compartment, and the operation is simple and convenient.

[0037] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the following detailed description, serve to explain the present disclosure. In the drawings:

[0039] FIG. 1 is a sectional view of an energy storage cabinet according to an example embodiment of the present disclosure.

[0040] FIG. 2 is an assembly view of a cover plate in the energy storage cabinet according to an example embodiment of the present disclosure.

[0041] FIGS. 3 to 5 are top views of energy storage cabinets according to different example embodiments of the present disclosure.

[0042] FIG. 6 is a partial enlarged view of portion A in FIG. 5.

[0043] FIGS. 7 to 9 are schematic views of the structure of the portion in FIG. 6.

[0044] FIG. 10 is a structural schematic view of a variant embodiment of FIG. 9.

[0045] FIG. 11 is an assembly view of a cover plate in an energy storage cabinet according to another example embodiment of the present disclosure.

[0046] FIG. 12 is a sectional view of the embodiment shown in FIG. 11.

[0047] FIG. 13 is a partial enlarged view of the position of a sealing member in FIG. 12.

[0048] FIG. 14 is a structural block diagram of a power consumption device according to an example embodiment of the present disclosure.

[0049] 10-cabinet body; 100-internal container; 101-first cavity; 102-second cavity; 103-air cavity; 104-outer frame; 1000-plug; 11-dividing piece; 111-division plate; 111-1-cross beam; 110-groove; 111-2-stand column; 1110-protrusion; 1111-first groove; 1112-first adhesive strip; 1113-first inclined surface; 1114-fastening hole; 112-cover plate; 1120-guiding groove; 1121-second groove; 1122-second adhesive strip; 1123-protruding part; 1124-notch; 1125-plugging part; 1126-second inclined surface; 1127-gap; 113-sealing piece; 114-fastener; 12-cabinet door; 2-battery module; 31-air conditioning module; 32-battery management module; 40-liquid supplement compartment; 41-inlet; 42-outlet; 5-breathable valve; 6-second detection element; 7-first detection element. DETAILED DESCRIPTION

[0050] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0051] In the present disclosure, the orientation words such as "up, down, top, bottom" used without the opposite description generally refer to the definition in the normal installation of the energy storage cabinet provided by the present disclosure, and the specific reference can be made to the drawing direction shown in FIG. 1. "Inner, outer" refers to the inner and outer of the corresponding component profile. In addition, the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important nature.

[0052] As shown in FIG. 1, the present disclosure provides an energy storage cabinet, which includes a cabinet body 10, the cabinet body has a first cavity 101 and a second cavity 102, wherein the first cavity 101 is used to accommodate a battery module 2 and a cooling medium, the cooling medium is in direct contact with the battery module 2; the second cavity 102 can be an electric control compartment.

[0053] It should be noted that the first cavity 101 and the second cavity 102 formed in the cabinet 10 can be formed in various ways, and can be integrally injection molded when the cabinet 10 is processed, or a partition plate can be added in the cavity of the cabinet 10, and the present disclosure does not limit this. The battery module 2 can be a plurality of battery monomers, a battery module, a battery pack, or other possible implementation forms. The cooling medium can be cooling gas or cooling liquid, for example, water, and the cooling medium is in direct contact with the battery module 2 and can act on the surface of the battery module 2. For example, the cooling liquid can completely immerse the battery module 2, and of course, the battery module 2 can also be partially immersed, which all belong to the protection scope of the present disclosure. Of course, the energy storage cabinet is not limited to the first cavity 101 and the second cavity 102, and the function of the second cavity 102 is not limited to the electric control room. The cavity can be added or the function of the cavity can be designed according to the needs.

[0054] In an exemplary embodiment of the present disclosure, a partition 11 can be arranged in the first cavity 101, and the partition 11 can serve as one of the side walls of the first cavity 101, and together with the other side walls of the first cavity 101, the partition 11 can form a closed cavity, and the battery module 2 and the cooling medium are arranged in the cavity. The advantages and effects of the partition 11 will be described below in combination with specific embodiments.

[0055] In an exemplary embodiment of the present disclosure, an immersion type energy storage cabinet is provided, and the cabinet 10 is directly injected with cooling liquid to fully immerse the battery module 2, so as to improve the cooling effect of the battery module 2. In order to prevent the leakage of the cooling liquid, the cabinet 10 is required to have good sealing performance. If only the top of the cabinet is opened, there is a problem of difficult installation and maintenance of the battery module. Or the cabinet is provided with a front door, and the door plate is used to seal the cooling liquid, which has the problems of uneven sealing torque, the need to empty the cooling liquid in the cabinet in advance when the internal components are maintained, and inconvenient operation.

[0056] To solve the above problems, in the present disclosure, a partition 11 is arranged in the cabinet body 10, which divides the cavity of the cabinet body 10 into a first cavity 101 and a second cavity 102. It should be noted that the cabinet body 10 can be a cuboid structure, and the partition 11 can be a vertical plate detachably installed in the cabinet body 10 to divide the cabinet body 10 into two cavities, one side of which is the front side where the cabinet door 12 is located, and the other side is the back side opposite to the cabinet door 12. Of course, the partition 11 can also be a horizontal plate arranged horizontally to divide the cabinet body 10 into two cavities, and the specific structure and design can be adjusted according to the structure of the battery module 2 and the design requirements. The partition 11 can be installed in the cabinet body 10 by means of fastening, clamping or pulling, which facilitates the disassembly and installation of the battery module 2. The space size of the first cavity 101 and the second cavity 102 is related to the position of the partition 11 in the cabinet body 10, and the liquid level of the cooling liquid in the first cavity 101 can immerse the battery module 2, which can be designed according to the requirements.

[0057] In the energy storage cabinet provided in the present disclosure, the internal cavity of the cabinet body 10 is divided into a battery immersion bin and an electric control bin by the partition 11, the partition 11 and part of the inner wall of the cabinet body 10 form a closed first cavity 101, the battery module 2 is installed inside, and the cooling liquid is injected to achieve full immersion cooling of the battery module 2, which improves the cooling effect of the battery module 2 while ensuring the sealing performance; the second cavity 102 is an electric control bin, the battery management module 32, the power distribution module and the air conditioning module 31 that need to be repaired can be placed in the second cavity 102, and each module in the second cavity 102 can be directly repaired to meet the repair requirements of the battery bin, which is simple and convenient to operate.

[0058] As shown in FIG. 2, the energy storage cabinet includes an outer frame 104 and an inner container 100 arranged in the outer frame 104, a partition is arranged in the inner container 100, the inner container 100 can be an integrated structure and form the cavity of the cabinet body 10, and the partition 11 and part of the cavity of the inner container 100 form a closed first cavity 101. Considering that the first cavity 101 is provided with the cooling liquid for immersing the battery module 2, the integrated inner container 100 is designed, the stainless steel plates are fully welded to ensure the integrity of the inner container 100, the gap between the adjacent two plates is reduced to avoid the leakage of the liquid, and the sealing level of the battery bin is improved. The protection level of the battery bin can reach IP68, which is used to realize the circulation of the cooling liquid in the battery bin without the risk of leakage, and is safer and more reliable. The actual protection level of the existing energy storage cabinet is only IP65, and the sealing protection level is obviously improved. The integrated inner container 100 can be a box-shaped structure with only one open side (the side where the cabinet door 12 is located), and the first cavity 101 and the second cavity 102 are both part of the cavity of the inner container 100, which can improve the consistency and integrity of the entire cabinet body 10. In other embodiments, the inner container 100 can also be fixed by splicing multiple plates under the premise of ensuring the sealing performance.

[0059] The partition 11 can be the vertical plate or horizontal plate structure mentioned above. In the present disclosure, as shown in FIG. 2, the partition 11 includes a compartment plate 111 fixed on the inner wall of the cabinet 10 and a cover plate 112 connected with the compartment plate 111. The compartment plate 111 can be a square frame structure with a crossbeam 111-1 and a vertical column 111-2 welded and fixed on the inner wall of the cabinet 10, as shown in FIG. 3 and FIG. 4. The sealing member 113 is arranged at the overlapping position of the compartment plate 111 and the cover plate 112. By designing the partition 11 as the compartment plate 111 and the cover plate 112, the detachable installation of the partition 11 in the cabinet 10 can be realized, thereby facilitating the disassembly and installation of the battery module 2. Meanwhile, by arranging the sealing member 113 at the overlapping position of the two, the leakage of the cooling liquid in the first cavity 101 from the gap between the compartment plate 111 and the cover plate 112 can be avoided.

[0060] The connection mode of the compartment plate 111 and the cover plate 112 can be various. In an exemplary embodiment of the present disclosure, the compartment plate 111 and the cover plate 112 partially overlap in the thickness direction, and the compartment plate 111 and the cover plate 112 are overlapped and fitted, as shown in FIG. 3. The cover plate 112 is arranged on the side of the compartment plate 111 close to the first cavity 101, that is, the compartment plate 111 is in front and the cover plate 112 is behind. The cooling liquid in the first cavity 101 can press the cover plate 112 on the compartment plate 111. The overlapping surface of the compartment plate 111 and the cover plate 112 is the part where the two overlap in the front-back direction, as shown in FIG. 5. The pressure F of the cooling liquid can directly act on the cover plate 112, tightly pressing the cover plate 112 on the compartment plate 111.

[0061] Of course, as shown in FIG. 11 to FIG. 13, the present disclosure also includes the embodiment that the compartment plate 111 is behind and the cover plate 112 is in front. Although the cooling liquid in the first cavity 101 has a tendency to push the cover plate 112 outward, this can be solved by increasing the number of fasteners connecting the cover plate 112 and the compartment plate 111, which also belongs to the content protected by the present disclosure.

[0062] As shown in FIG. 2, the cabinet 10 is provided with a socket 1000, and the cover plate 112 is inserted into the cabinet 10 from the socket 1000 and connected with the compartment plate 111. The socket 1000 can be arranged on the top wall of the cabinet 10, and the cover plate 112 is inserted from top to bottom to realize the overlapping of the cover plate 112 and the compartment plate 111, and the overlapping surface of the two is at the inner side of the compartment plate 111. In order to ensure the sealing performance of the socket 1000, the top of the cover plate 112 is provided with a plugging part 1125 matched with the shape of the socket 1000, which can close the socket 1000 after the cover plate 112 is inserted. Of course, in the embodiment that the partition 11 is a horizontal plate, the socket 1000 can be arranged on the side wall of the cabinet 10, and the horizontal insertion in the front-back direction is adopted.

[0063] The present disclosure includes the case that the partition plate 111 and the cover plate 112 are not coplanar, and of course, the present disclosure also includes the case that the two are coplanar. In the embodiment in which the two are coplanar, in order to ensure the sealing performance of the two, the present disclosure makes a series of settings. As shown in FIG. 3, the surface of the partition plate 111 used for lapping with the cover plate 112 is a first inclined surface 1113, which is configured to taper in the direction from the inner side of the first cavity 101 to the outer side of the first cavity 101, that is, the width of the two cross beams 111-1 and the two vertical columns 111-2 gradually expands, and the opening of the entire frame structure gradually becomes smaller. The cover plate 112 has a second inclined surface 1126 matched with the first inclined surface 1113, which is configured to taper the width of the cover plate 112 from the inner side of the first cavity 101 to the outer side of the first cavity 101. Under the action of the pressure F of the cooling liquid, the cover plate 112 will be pushed forward, and by designing the inclined surface, the opening of the partition plate 111 is designed to be tapered, which can play a certain stopping effect on the cover plate 112. In other embodiments, the lapping surface of the partition plate 111 and the cover plate 112 can also be a planar lapping structure. Of course, the first inclined surface 1113 and the second inclined surface 1126 can exist alone, and one is an inclined surface and the other is a planar structure, which also belongs to the protection scope of the present disclosure.

[0064] In the above embodiment, the cover plate 112 and the partition plate 111 are arranged staggered front and back and located in different planes. In another exemplary embodiment of the present disclosure, as shown in FIG. 4, the partition plate 111 and the cover plate 112 can be located in the same plane, and one of the surfaces abutting against each other is provided with a guide groove 1120, and the other is provided with a protrusion 1110 matched with the guide groove 1120. The protrusion 1110 and the guide groove 1120 cooperate to guide when the cover plate 112 is inserted or pulled out in the up-down direction, and at the same time, the protrusion 1110 can be limited by the guide groove 1120 to realize the connection of the partition plate 111 and the cover plate 112. In the above embodiment in which the inclined surface is designed, by designing the inclination of the first inclined surface 1113 and the second inclined surface 1126, the coplanar design of the partition plate 111 and the cover plate 112 can be realized. In the embodiment in which the two are coplanar, the surface of the frame structure facing the cover plate 112 can be provided with an L-shaped groove, and the horizontal section of the L-shaped structure can play a stopping effect. By designing the thickness of the cover plate 112 and the thickness of the vertical section of the L-shaped structure, the coplanar design with the cover plate 112 can be realized.

[0065] In the embodiment in which the partition 11 is designed as the compartment plate 111 and the cover plate 112, in order to avoid liquid leakage at the joint between the two. In the present disclosure, as shown in FIGS. 7 and 8, the overlapping part of the compartment plate 111 and the cover plate 112 in the thickness direction forms a lapping surface, at least one of the lapping surfaces of the two is provided with a groove 110, and the sealing member 113 can be a rubber strip arranged in the groove 110, which plays a sealing role by compression of the rubber strip.

[0066] Further, in the present disclosure, as shown in FIGS. 5 and 6, the lapping surfaces of the compartment plate 111 and the cover plate 112 are respectively provided with grooves 110, the grooves 110 of the two are respectively provided with rubber strips, and the grooves 110 and the rubber strips of the two are arranged staggered in the width direction of the lapping surface, and the concave-convex structure of the lapping surface is used to form multi-stage sealing, multiple protection, and ensure the reliability of the sealing.

[0067] In an exemplary embodiment of the present disclosure, as shown in FIGS. 6 and 7, the lapping surface of the compartment plate 111 is provided with a first groove 1111, and the sealing member 113 includes a first rubber strip 1112 arranged in the first groove 1111. The lapping surface of the cover plate 112 is provided with a second groove 1121, and the sealing member 113 includes a second rubber strip 1122 arranged in the second groove 1121. The two sides of the first groove 1111 are respectively provided with the second groove 1121, and the two sides of the second groove 1121 are respectively provided with the second rubber strip 1122. In this way, even if the cooling liquid enters the second groove 1121 on the left side, there is still the first groove 1111 in the middle and the first rubber strip 1112 in the first groove 1111 for secondary sealing, and then there is still the second groove 1121 on the right side and the second rubber strip 1122 in the second groove 1121 for tertiary sealing. Of course, the present disclosure does not limit the number and shape of the grooves 110 and the rubber strips. In the present embodiment, the cross-sectional shape of the first rubber strip 1112 can be rectangular, the width W1 and the depth H1 of the first groove 1111 can be designed according to the width W2 and the thickness H2 of the first rubber strip 1112, the cross-section of the second rubber strip 1122 is circular with a diameter D, and the width W3 and the depth H3 of the second groove 1121 can be designed according to the size of D.

[0068] As shown in FIGS. 6 and 8, the lapping surface of the cover plate 112 is provided with a protrusion 1123, the protrusion 1123 is located between the two second grooves 1121, and the protrusion 1123 is used for crimping on the first rubber strip 1112. The thickness of the protrusion can be H4, and after crimping is completed, the compression amount of the first rubber strip 1112 at the position of the sealing member 113 is ΔP1=(H2-(H1-H4)) / H2, wherein ΔP1 is between 25% and 35%, the compression amount of the second rubber strip 1122 is ΔP2=(D-H3) / D, wherein ΔP2 is between 25% and 35%, and the filling rate of the first rubber strip 1112 is about 95%.

[0069] As shown in FIG. 6, the fastening hole 1114 is arranged on the partition plate 111 at a position corresponding to the first groove 1111, and the partition plate 111 and the cover plate 112 are connected by the fastener 114 passing through the fastening hole 1114 and the first adhesive strip 1112. The width of the first adhesive strip 1112 is greater than the size of the through hole of the fastener 114, and the difference between the width W2 of the first adhesive strip 1112 and the size of the fastening hole 1114 is not less than 10 mm. In the present disclosure, the sealing member 113 and the fastener 114 can be multiple arranged along the outer periphery of the partition plate 111, and the distance between adjacent fasteners 114 can be 120-140 mm. For the embodiments shown in FIGS. 11-13, the number of fasteners 114 can be appropriately increased, and the distance between adjacent fasteners 114 can be designed to be smaller. The shapes of the first adhesive strip 1112 and the second adhesive strip 1122 are not limited, and as shown in FIG. 10, the first adhesive strip 1112 and the second adhesive strip 1122 can also be designed as an integrated structure.

[0070] As shown in FIG. 6, the gap 1127 is formed between the end of the cover plate 112 and the inner wall of the cabinet 10, and the cover plate 112 is further provided with a notch 1124 communicating the gap 1127 and the second groove 1121, and an adhesive is arranged in the gap 1127 and the notch 1124. After the cover plate 112 is assembled, the gap 1127 and the notch 1124 can be subjected to dispensing treatment, further ensuring the sealing performance of the edge position.

[0071] As shown in FIG. 1, the battery module 2 and the top wall of the cabinet 10 are arranged in a spaced manner, and the cooling liquid can immerse the battery module 2 without completely filling the entire first cavity 101. The liquid level of the cooling liquid is located between the top surface of the battery module 2 and the top wall of the cabinet 10, and the cooling liquid and the top wall of the cabinet 10 form an air cavity 103. The air cavity 103 located above is the same as the atmospheric pressure, which is used to ensure that the cooling liquid can circulate at a lower pressure (0.2-0.4 bar), and the combustible gas discharged from the battery module 2 can be timely discharged to the air cavity 103.

[0072] The cover plate 112 is provided with a breather valve communicating with the air cavity 103, which can ensure the balance of the air pressure inside and outside the first cavity 101. The first cavity 101 is provided with a first detection element 7 for obtaining the liquid level information of the cooling liquid. The first detection element 7 can be an electronic liquid level meter for sensing and monitoring the liquid level. The cover plate 112 can also be provided with a second detection element 6, which can be a mechanical liquid level meter in communication with the cooling liquid for visual monitoring of the liquid level. The above means can be used to ensure the stability of the liquid level of the cooling liquid in the first cavity 101.

[0073] The energy storage cabinet further comprises a rotatable cabinet door 12, which can open or close the second cavity 102. In other embodiments, the cabinet door 12 can also be fixed by buckling, plugging, fasteners, etc., which all belong to the protection scope of the present disclosure.

[0074] As shown in FIG. 1, the second cavity 102 is provided with an air conditioner module 31, a battery management module 32 and a power distribution module. Of course, the components in the electric control bin can be at least one of the above, and the specific components and arrangement manner are not limited.

[0075] As shown in FIG. 2, the second cavity 102 is further provided with a liquid supplement bin 40, and the partition piece 11 is provided with an inlet 41 and an outlet 42 which are communicated with the first cavity 101. The inlet 41 and the outlet 42 are respectively communicated with the liquid supplement bin 40 through pipelines. The cooling liquid in the first cavity 101 can be supplemented in time, and the cooling liquid in the first cavity 101 can also be circulated to improve the heat dissipation effect. The inlet 41 and the outlet 42 can be arranged at the bottom of the cover plate 112, which is convenient for liquid injection and liquid discharge.

[0076] According to the second aspect of the present disclosure, a power utilization device is provided, which comprises the energy storage cabinet described above. The power utilization device can be a vehicle, a drone, a household appliance, etc., and the energy storage cabinet is used to provide electric energy. The power utilization device has all the beneficial effects of the energy storage cabinet, which will not be described in detail here.

[0077] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0078] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not describe various possible combination manners again.

[0079] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. An energy storage cabinet (1), characterized in that, The energy storage cabinet (1) comprises: a cabinet body (10) having a first cavity (101) and a second cavity (102), wherein the first cavity (101) is used to accommodate a battery module (2) and a cooling medium, the cooling medium being in direct contact with the battery module (2), and the second cavity (102) is an electric control bin.

2. The energy storage tank (1) according to claim 1, characterized in that A partition (11) is arranged in the first cavity (101).

3. The energy storage tank (1) according to claim 1, characterized in that The cabinet body (10) is provided with a partition (11), and the partition (11) divides the cavity of the cabinet body (10) into the first cavity (101) and the second cavity (102).

4. The energy storage tank (1) according to claim 1, characterized in that The cabinet body (10) comprises an outer frame (104) and an inner container (100) arranged in the outer frame (104), and the inner container (100) is provided with a partition (11), and the partition (11) and part of the cavity of the inner container (100) form a closed first cavity (101).

5. The energy storage cabinet (1) according to any of claims 2-4, characterized in that, The partition (11) comprises a bin partition plate (111) fixed on the inner wall of the cabinet body (10) and a cover plate (112) connected with the bin partition plate (111), and the cover plate (112) is arranged on the side of the bin partition plate (111) close to the first cavity (101), so that the cooling medium in the first cavity (101) can press the cover plate (112) on the bin partition plate (111).

6. The energy storage tank (1) according to claim 5, characterized in that The bin partition plate (111) and the cover plate (112) partially overlap in the thickness direction, and the bin partition plate (111) and the cover plate (112) are engaged.

7. The energy storage tank (1) according to claim 6, characterized in that The bin partition plate (111) is a frame structure fixed on the inner wall of the cabinet body (10), and the surface of the bin partition plate (111) engaged with the cover plate (112) is a first inclined surface (1113), and the first inclined surface (1113) is configured to gradually reduce the distance between the two columns (111-2) of the frame structure from the inside of the first cavity (101) to the outside of the first cavity (101).

8. The energy storage tank (1) according to claim 7, characterized in that The cover plate (112) has a second inclined surface (1126) matched with the first inclined surface (1113), and the second inclined surface (1126) is configured to gradually reduce the width of the cover plate (112) from the inside of the first cavity (101) to the outside of the first cavity (101).

9. An energy storage tank (1) according to any one of claims 6-8, characterized in that, The bin partition plate (111) is a frame structure fixed on the inner wall of the cabinet body (10), and one of the surfaces of the frame structure and the cover plate (112) abutting each other is provided with a guide groove (1120), and the other is provided with a protrusion (1110) matched with the guide groove (1120).

10. The energy storage cabinet (1) according to any of claims 6-9, characterized in that The bin partition plate (111) is a frame structure fixed on the inner wall of the cabinet body (10), and the surface of the bin partition plate (111) engaged with the cover plate (112) is a plane, and the thickness of the plane is configured to make the plane coplanar with the plane where the cover plate (112) is located.

11. An energy storage cabinet (1) according to any one of claims 6-10, characterized in that The bin partition plate (111) and the cover plate (112) are located in the same plane.

12. An energy storage tank (1) according to any one of claims 6-11, characterized in that The compartment partition plate (111) is a frame structure fixed on the inner wall of the cabinet body (10), and the plane where the frame structure is located and the plane where the cover plate (112) is located are not shared.

13. An energy storage tank (1) according to any one of claims 6-12, characterized in that, The cabinet body (10) is provided with a socket (1000), and the cover plate (112) is inserted into the cabinet body (10) from the socket (1000) and connected with the compartment partition plate (111).

14. An energy storage cabinet (1) according to any of claims 6-13, characterized in that The position where the compartment partition plate (111) and the cover plate (112) are overlapped is provided with a sealing element (113).

15. The energy storage cabinet (1) according to claim 14, characterized in that The overlapping part of the compartment partition plate (111) and the cover plate (112) in the thickness direction forms an overlapping surface, and at least one of the overlapping surfaces of the two is provided with a groove (110), and the sealing element (113) is a rubber strip arranged in the groove (110).

16. An energy storage tank (1) according to claim 15, characterized in that The overlapping surfaces of the compartment partition plate (111) and the cover plate (112) are respectively provided with the groove (110) and the rubber strip, and the grooves (110) and the rubber strips of the two are staggered in the width direction of the overlapping surface to form multi-stage sealing.

17. An energy storage tank (1) according to claim 16, characterized in that The overlapping surface of the compartment partition plate (111) is provided with a first groove (1111), and the sealing element (113) comprises a first rubber strip (1112) arranged in the first groove (1111).

18. An energy storage tank (1) according to claim 17, characterized in that The overlapping surface of the cover plate (112) is provided with a second groove (1121), and the sealing element (113) comprises a second rubber strip (1122) arranged in the second groove (1121).

19. The energy storage tank (1) according to claim 18, characterized in that The two sides of the first groove (1111) are respectively provided with the second groove (1121), and the second rubber strip (1122) is arranged in the second groove (1121) on the two sides.

20. The energy storage tank (1) according to claim 19, characterized in that The overlapping surface of the cover plate (112) is provided with a protruding part (1123) between the two second grooves (1121), and the protruding part (1123) is used for being pressed on the first rubber strip (1112).

21. An energy storage tank (1) according to claim 20, characterized in that The compartment partition plate (111) is provided with a fastening hole (1114) corresponding to the first groove (1111), and the compartment partition plate (111) and the cover plate (112) are connected through a fastener (114) penetrating through the fastening hole (1114) and the first rubber strip (1112).

22. An energy storage cabinet (1) according to any of claims 18-21, characterized in that The end of the cover plate (112) and the inner wall of the cabinet body (10) have a gap (1127), and the overlapping surface of the cover plate (112) is further provided with a notch (1124) communicating the gap (1127) and the second groove (1121), and an adhesive is arranged in the gap (1127) and the notch (1124).

23. An energy storage tank (1) according to claim 21 or 22, characterized in that The sealing element (113) and the fastener (114) are a plurality of elements arranged along the outer periphery of the compartment partition plate (111).

24. An energy storage tank (1) according to any one of claims 2-4, characterized in that, The battery module (2) and the top wall of the cabinet body (10) are arranged in a spaced manner, the cooling medium is a cooling liquid, the liquid level of the cooling liquid is located between the top surface of the battery module (2) and the top wall of the cabinet body (10), and the cooling liquid and the top wall of the cabinet body (10) form an air cavity (103).

25. An energy storage tank (1) according to claim 24, characterized in that The partition (11) is provided with a gas permeable valve (115) in communication with the air cavity (103).

26. An energy storage tank (1) according to claim 24 or 25, characterized in that The first cavity (101) is provided with a first detection element (7) for acquiring cooling liquid level information.

27. An energy storage cabinet (1) according to any of claims 2-4, characterized in that The energy storage cabinet (1) further comprises a rotatable cabinet door (12) which can open or close the second cavity (102).

28. An energy storage tank (1) according to claim 27, characterized in that The second cavity (102) is provided with at least one of an air conditioning module (31), a battery management module (32) and a power distribution module (33).

29. An energy storage cabinet (1 ) according to any of claims 1 - 28, characterized in that The second cavity (102) is further provided with a liquid supplement bin (40), and the partition (11) in the cabinet (10) is provided with an inlet (41) and an outlet (42) in communication with the first cavity (101), and the inlet (41) and the outlet (42) are respectively connected with the liquid supplement bin (40) through pipelines.

30. An electrical device (2) characterized by The energy storage cabinet (1) of any one of claims 1-29.

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