Energy storage cabinet and energy storage system

Abstract

The utility model relates to the technical field of energy storage cabinets, in particular to an energy storage cabinet and an energy storage system, which comprise a cabinet body with an accommodating space formed inside, a first cabin configured to accommodate a battery assembly, and a second cabin configured to accommodate at least one of a PCS (Power Control System) and a heat management unit, the first cabin and the second cabin are distributed in the cabinet body along the height descending direction of the cabinet body; the energy storage cabinet further comprises a fork connection unit which is used for a transfer machine to insert so as to carry the cabinet body to a preset position. The battery occupies most of the weight of the whole energy storage cabinet so that the overall gravity center can be located on the upper middle portion. Through the plug-in unit arranged between the first cabin and the second cabin, the fork-joint position of the transfer machine is arranged between the first cabin and the second cabin, so that the distance between the fork-joint position and the first cabin used for placing the battery assembly is shortened, and the distance between the gravity center of the cabinet body and the fork-joint position is effectively shortened; and the toppling risk of the energy storage cabinet in the fork transportation process is reduced, and the stability of the energy storage cabinet in the transfer process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage cabinets, in particular to an energy storage cabinet and an energy storage system. Background Art

[0002] An energy storage cabinet is a device used to store and release electrical energy. Its working principle is based on electrochemical reactions. When there is an excess supply of electricity, the energy storage cabinet converts the excess electrical energy into chemical energy and stores it in the battery; when energy demand increases, the energy storage cabinet converts the stored chemical energy into electrical energy and supplies it to the power grid or other equipment.

[0003] Energy storage cabinets are generally arranged in an integrated or split manner. In an integrated energy storage cabinet, there are usually three ways to arrange the battery compartment and the electrical compartment. The first is to arrange the two on the left and right. Due to the large footprint, the energy density per unit area is low and it is generally not adopted; the second is to have the electrical compartment on the top and the battery compartment on the bottom. The advantage is that the center of gravity is at the bottom, which is convenient for forklift transportation. However, when the electrical compartment is connected to the outside, it needs to pass through the bottom battery compartment, which is inconvenient, and the electrical compartment is prone to water leakage into the bottom battery compartment, increasing the risk of short circuit fire; the third is to have the electrical compartment on the bottom and the battery compartment on the top. This arrangement can effectively overcome the inconvenience of external wiring of the electrical compartment and the problem of water leakage into the battery compartment. However, due to the large weight of the battery pack and its high position, the forklift pole is usually inserted into the bottom of the energy storage cabinet during actual forklift transportation, which makes the energy storage cabinet easy to tip over during forklift transportation and difficult to transport smoothly. Utility Model Content

[0004] The utility model aims to provide an energy storage cabinet and an energy storage system, aiming to solve the problem that when the integrated energy storage cabinet has a battery compartment on the top and an electrical compartment on the bottom, the overall center of gravity is too high, it is easy to tip over during forklift transportation, and it is difficult to transport smoothly.

[0005] The utility model is implemented in this way: an energy storage cabinet comprises:

[0006] The cabinet has a receiving space formed inside;

[0007] a first compartment configured to house a battery assembly;

[0008] A second compartment is configured to accommodate at least one of a PCS and a thermal management unit, wherein the first compartment and the second compartment are distributed in the cabinet along a descending direction of the cabinet height;

[0009] The fork connection unit is arranged on the cabinet body and distributed between the first compartment and the second compartment in the height direction, and is configured to be inserted by a forklift rod so as to transport the cabinet body to a preset position.

[0010] Preferably, it also includes:

[0011] The third compartment is formed between the bottom plate of the first compartment and the top plate of the second compartment; the fork connection unit is installed inside the third compartment and at least one end is exposed from the outer wall of the cabinet.

[0012] Preferably, the fork connection unit comprises: at least two connectors arranged in parallel in sequence along the length direction or the width direction of the cabinet, and each of the connectors is provided with a connection hole for the forklift rod to pass through.

[0013] Preferably, the connector extends from an outer wall on one side of the cabinet to an outer wall on the other side of the cabinet opposite thereto.

[0014] Preferably, the number of the connectors is two, and they are symmetrically distributed at both ends of the cabinet along the width direction of the cabinet.

[0015] Preferably, the plug connector is configured as a forklift slot, and the plug hole is configured as a square hole that passes through the forklift slot and matches the shape of the forklift rod to be inserted.

[0016] Preferably, it also includes:

[0017] The decorative plate is detachably mounted on one side outer wall of the cabinet and is configured to be opposite to the plug-in component to block one end port of the plug-in hole.

[0018] Preferably, the interior of the third compartment is filled with a heat-insulating layer, and the heat-insulating layer is wrapped around the periphery of the fork-joint unit.

[0019] Preferably, it also includes:

[0020] The load-bearing beam is fixedly connected to the load-bearing column of the cabinet body, and a plurality of beams are sequentially arranged along the length direction or the width direction of the cabinet body; the bottom plate of the first cabin is fixed above each of the load-bearing beams, and the fork-joining unit is fixedly installed on the top plate of the second cabin.

[0021] Preferably, it also includes:

[0022] The support brackets are arranged on the inner walls on both sides of the cabinet in the length direction or the width direction, and a plurality of support brackets are evenly spaced along the height direction of the cabinet; the support brackets are configured to support the battery pack to be installed by two support brackets at the same height.

[0023] Preferably, one of the two outer side walls of the cabinet body opposite to the first compartment is provided with a first opening, and the outer wall of the cabinet body is provided with a first cabinet door for closing the first opening in a manner that can be opened and closed; at least one of the two outer side walls of the cabinet body opposite to the second compartment is provided with a second opening, and the outer wall of the cabinet body is provided with a second cabinet door for closing the second opening in a manner that can be opened and closed; the fork-connecting unit is arranged inside the cabinet body between the first opening and the second opening along the height direction.

[0024] This embodiment also provides an energy storage system, including: the energy storage cabinet as described above, battery packs stacked in sequence in the first compartment along the height direction, and a PCS and / or a thermal management unit arranged inside the second compartment.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows: the first compartment is used for placing battery assemblies, and the second compartment is used for placing inverters or thermal management units. Since the batteries occupy most of the weight of the entire energy storage cabinet, the overall center of gravity of the energy storage cabinet is located in the middle and upper part; by means of a plug-in unit provided between the first compartment and the second compartment, the fork-connection position of the transfer machinery is provided between the first compartment and the second compartment, so that the distance between the fork-connection position and the first compartment for placing the battery assemblies is shortened, thereby effectively shortening the distance between the center of gravity of the cabinet and the fork-connection position, thereby reducing the risk of tipping over during forklift transportation of the energy storage cabinet and improving the stability of the energy storage cabinet during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional structural diagram of an energy storage cabinet provided by the utility model;

[0027] Figure 2 A schematic diagram of the three-dimensional structure of an energy storage cabinet provided by the utility model with the second cabinet door and part of the outer wall on one side removed;

[0028] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0029] Figure 4 for Figure 2 Schematic diagram of the three-dimensional structure when the bottom plate and the insulation layer are removed;

[0030] Figure 5 A three-dimensional structural diagram of an energy storage cabinet provided by the utility model from another perspective;

[0031] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure when the decorative panel is removed.

[0032] In the accompanying drawings: 1 cabinet body, 2 first cabin, 3 second cabin, 4 cross connection unit, 41 connector, 5 third cabin, 6 decorative panel, 7 load-bearing beam, 8 support bracket, 9 first cabinet door, 10 second cabinet door, 11 load-bearing column, 12 insulation layer, 13 bottom plate, 14 top plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0034] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0035] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0036] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0037] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0038] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0039] Referring to the prior art, energy storage cabinets are generally arranged in an integrated or split manner. Among them, the integrated energy storage cabinet usually integrates the battery compartment and the electrical compartment into one cabinet. The battery pack and some electrical components are placed in the battery compartment. The weight of the battery pack accounts for about 80% of the total weight of the energy storage cabinet. The battery pack relies on air conditioning or water cooling units for heat dissipation or heating. Therefore, the battery compartment is closed and the protection level is IP55 or above; PCS or water cooling units are usually placed inside the electrical compartment. These devices generate high heat and require direct ventilation for heat dissipation. Therefore, the electrical compartment is not closed and the protection level is IP54 or below, so the electrical compartment and the battery compartment need to be completely isolated.

[0040] Because when the electrical compartment is on top and the battery compartment is on the bottom, the external wiring of the electrical compartment needs to pass through the bottom battery compartment, and the electrical compartment is prone to leak water into the bottom battery compartment, increasing the risk of short circuit and fire. Therefore, in actual operation, the battery compartment on top and the electrical compartment on the bottom becomes the preferred choice. However, the battery pack occupies a large weight, and the high-positioned battery compartment raises the overall center of gravity of the energy storage cabinet. The traditional energy storage cabinet sets the forklift opening at the bottom of the energy storage cabinet, which makes the fork connection position far away from the center of gravity of the energy storage cabinet, which leads to the problem of tipping during transportation.

[0041] like Figures 1 to 5 As shown, it is a structural diagram of an energy storage cabinet provided by the utility model, comprising: a cabinet body 1 with a receiving space formed therein, a first compartment 2 configured to accommodate a battery assembly, and a second compartment 3 configured to accommodate at least one of a PCS and a thermal management unit, wherein the first compartment 2 and the second compartment 3 are distributed in the cabinet body 1 along a height descending direction of the cabinet body 1; and further comprising a fork connection unit 4 configured to be inserted by a transfer machine to transport the cabinet body 1 to a preset position, wherein the fork connection unit 4 is arranged in the cabinet body 1 and distributed between the first compartment 2 and the second compartment 3 along a height direction.

[0042] In actual application of this embodiment, the first compartment 2 is used to place the battery assembly, and the second compartment 3 is used to place the inverter or the thermal management unit. Since the battery occupies most of the weight of the entire energy storage cabinet, the overall center of gravity of the energy storage cabinet is located in the upper middle part; by means of the fork connection unit 4 provided between the first compartment 2 and the second compartment 3, the fork connection position of the transfer machinery is set between the first compartment 2 and the second compartment 3, so that the distance between the fork connection position and the first compartment 2 for placing the battery assembly is shortened, thereby effectively shortening the distance between the center of gravity of the cabinet body 1 and the fork connection position, thereby reducing the risk of tipping over during fork transportation of the energy storage cabinet and improving the stability of the energy storage cabinet during transportation.

[0043] It should be noted that the fork connection unit 4 of the present embodiment can be a plug-in component fixedly installed in the internal space of the cabinet 1 between the first compartment 2 and the second compartment 3 and for the transfer machine to insert. Furthermore, it can also be a socket integrally formed inside the space of the cabinet 1 between the first compartment 2 and the second compartment 3 and connected to the outside. Furthermore, it can also be a plug-in component arranged on the cabinet 1 between the first compartment 2 and the second compartment 3 and extending outward for a certain length. As long as it can be connected with the forklift and the transfer of the energy storage cabinet can be completed smoothly, the specific structure of the fork connection unit 4 is not a restrictive provision of the present embodiment.

[0044] Corresponding to the above-mentioned arrangement, the present embodiment mainly makes improvements on the plug-in position for the forklift to penetrate, so as to balance the fork connection center of gravity between the battery compartment and the electrical device compartment, and sets the fork connection position originally located at the bottom between the battery compartment and the electrical compartment, thereby effectively reducing the distance of the forklift fork rod relative to the center of gravity of the entire cabinet body 1, making the movement of the energy storage cabinet more stable during actual transportation, and effectively reducing the risk of tipping.

[0045] It should be noted that the above-mentioned PCS refers to the power conversion system (Power Conversion System) in the energy storage device. Its main function is to effectively control the electric energy stored in the electric energy storage device such as the battery pack, so as to output it as the required type of electric energy when needed and supply it to the power grid or terminal load. Its working principle is to convert the DC power of the energy storage battery into AC power, and adjust and protect the output voltage, current and frequency through the control system, so as to realize the effective management and control of the energy storage battery; the above-mentioned thermal management unit can select the water cooling unit as needed to realize the temperature regulation of the battery.

[0046] In one embodiment of the present invention, Figure 2 As shown, it also includes: a third compartment 5 formed between the bottom plate 13 of the first compartment 2 and the top plate 14 of the second compartment 3; the fork unit 4 is installed inside the third compartment 5 and at least one end is exposed from the outer wall of the cabinet 1.

[0047] In this embodiment, the third compartment 5 is preferably arranged between the first compartment 2 and the second compartment 3, thereby reserving installation space for the fork connection unit 4. The fork connection unit 4 is installed inside the third compartment 5, and the exposed end is convenient for the forklift rod to pass through when in use. Therefore, the fork connection position of the forklift is arranged between the battery compartment and the electrical compartment. Compared with the fork interface being arranged at the bottom of the cabinet 1, the distance between the fork rod of the forklift and the center of gravity of the cabinet 1 is shortened, thereby reducing the risk of tipping over during transportation.

[0048] It should be noted that, along the height direction of the cabinet 1, in addition to the third compartment 5, other compartments may be arranged between the first compartment 2 and the second compartment 3 to meet different needs; in addition to placing the battery pack, the first compartment 2 may also be provided with some electrical components, and the second compartment 3 may be provided with a PCS or a thermal management unit therein, and may also be provided with a fire-fighting device; therefore, the number of compartments and the actual contents placed therein may be arranged and selected as needed, and this embodiment is not specifically limited here.

[0049] Specifically, if Figure 2 and Figure 3 As shown, the fork connection unit 4 includes: at least two connectors 41 arranged in parallel in sequence along the length direction or the width direction of the cabinet 1, and each connector 41 is provided with a connection hole for the forklift rod to pass through.

[0050] It can be known that the fork connection unit 4 is configured to have at least two connectors 41 so as to correspond to the fork rod of a forklift, and the connector holes provided in the connectors 41 can be used for the fork rod to penetrate, so as to facilitate the use of the fork rod of the forklift to lift the energy storage cabinet.

[0051] In actual operation of this embodiment, the above-mentioned connectors 41 can be arranged in parallel in multiple along the length direction of the cabinet 1 and extend along the width direction of the cabinet 1; or can be arranged in parallel in multiple along the width direction of the cabinet 1 and extend along the length direction of the cabinet 1.

[0052] Of course, corresponding to cabinets 1 of different shapes, the connector 41 can also be arranged and extended along other directions. For example, when the cabinet 1 is a cylinder, the connector 41 is arranged along a direction parallel to the diameter of the cabinet 1. The arrangement method and extension direction of the connector 41 are not restrictive provisions of this embodiment.

[0053] In actual operation of this embodiment, the above-mentioned plug-in hole can be a through hole or a blind hole. Specifically, the blind hole is a conductive hole that connects the surface layer and the inner layer but does not penetrate the whole. For example, an incompletely through blind hole is provided at one end of the connector 41, or incompletely through blind holes are provided from both ends of the connector 41 inwardly, or a through hole is provided from one end of the connector 41 to the other end. The above methods can be selected according to actual conditions, as long as the fork connection of the forklift rod can be achieved. This embodiment does not make any specific limitations here.

[0054] In one case of this embodiment, the number of the plug-in components 41 is two, and they are symmetrically distributed at two ends of the cabinet 1 along the width direction of the cabinet 1 .

[0055] It is not difficult to see that the number of the above-mentioned connectors 41 is set to two, and they are symmetrically distributed at both ends of the cabinet 1, so that in the actual fork transportation process, the force on the cabinet 1 can be more uniform and the transportation process is smoother; in addition, the two connectors 41 are suitable for most types of forklift fork rods, and the distance between the two connectors 41 can be adjusted and adapted according to the distance between the two fork rods of the forklift. This embodiment is not described in detail here.

[0056] Exemplarily, the number of the above-mentioned connectors 41 is two, or it can be more than two to meet the number of forklift rods of different types of forklifts. The connectors 41 can also be asymmetrically distributed relative to the two ends of the cabinet 1 as needed. Therefore, this embodiment does not impose specific restrictions on the number, arrangement method, and arrangement spacing of the above-mentioned connectors 41.

[0057] In another case of this embodiment, if Figure 3 and Figure 4 As shown, the connector 41 extends from the outer wall of one side of the cabinet 1 to the outer wall of the other side of the cabinet 1 opposite thereto; the connector 41 is configured as a forklift slot, and the plug hole is configured as a square hole that passes through the forklift slot and matches the shape of the forklift rod to be inserted.

[0058] It can be known that by setting the above-mentioned connector 41 as a forklift slot, it can cooperate with the fork rod of the forklift and extend it from one end of the cabinet 1 to the other end. During forklift transportation, the force on the cabinet 1 is more uniform, reducing the risk of tipping over of the energy storage cabinet; the connecting hole is set as a through hole, so that the fork rod can pass through along the length or width direction of the cabinet 1, increasing the contact area between the fork rod and the connecting hole, and the square hole is adapted to the shape of the forklift rod, thereby ensuring the stability of the cabinet 1 during forklift transportation.

[0059] It should be noted that, in addition to extending from one outer wall of the cabinet 1 to the other outer wall, the forklift slot may also extend a certain distance from the outer wall of the cabinet 1 at both ends, or both ends may be located inside the cabinet 1. As long as it can be connected to the outside world and allow the forklift rod to pass through, the length of the forklift slot in this embodiment is not a restrictive provision.

[0060] Exemplarily, the plug-in hole can be an inverted U-shaped hole or a square hole, and the top force-bearing surface is set to a plane to ensure stable contact between the fork rod and the plug-in hole and improve stability during transportation. The above-mentioned forklift groove can be made of metal, including but not limited to stainless steel, copper, aluminum alloy, etc.

[0061] Of course, not limited to this, the cross-section of the plug-in hole can also be other shapes, such as circular, triangular, pentagonal, hexagonal, etc. Correspondingly, the shape of the fork rod of the forklift can also be set at will, such as cylindrical, triangular prism, pentagonal, hexagonal, etc., and multiple plug-in holes cooperate with the forklift rod to achieve smooth transportation of the cabinet 1. Therefore, the shape and number of the plug-in holes are not restrictive provisions of this embodiment.

[0062] Further, such as Figure 2 and Figure 3 As shown, the third compartment 5 is filled with an insulation layer 12, and the insulation layer 12 is wrapped around the outside of the fork unit 4; the insulation layer 12 filled in the third compartment 5 can effectively isolate the first compartment 2 and the second compartment 3 to ensure the sealing and insulation of the compartment where the battery is located during the battery thermal management process.

[0063] In one case of this embodiment, if Figure 5 As shown, it also includes: a decorative plate 6 detachably mounted on the outer wall of one side of the cabinet 1, and the decorative plate 6 is configured to be opposite to the plug-in component 41 to block one end port of the plug-in hole.

[0064] It can be known that, by using the decorative plate 6 detachably mounted on the outer wall of the cabinet 1 , one end port of the connector 41 can be wrapped, which not only improves the external appearance but also further ensures the sealing of the internal insulation layer 12 .

[0065] Exemplarily, the above-mentioned insulation layer 12 can be mineral wool, polystyrene board, or rubber insulation layer board using PEVA material, etc., as long as it can achieve thermal insulation inside the third cabin 5, and this embodiment is not specifically limited here.

[0066] Furthermore, it also includes: a load-bearing beam 7 fixedly connected to the load-bearing column 11 of the cabinet 1, and a plurality of load-bearing beams 7 are arranged in sequence along the length direction or the width direction of the cabinet 1; a bottom plate 13 of the first cabin 2 is fixed above each load-bearing beam 7, and a fork unit 4 is fixedly installed on the top plate 14 of the second cabin 3

[0067] It can be known that by using the load-bearing beam 7 arranged inside the third cabin 5, the bottom plate 13 of the first cabin 2 can be fixed above it, and the fork-connecting unit 4 is fixedly installed on the top plate 14 of the second cabin 3, ensuring the stable force of the fork-connecting unit 4 and improving the stability of the transportation process.

[0068] Illustratively, the load-bearing beams 7 may be distributed along the length direction or the width direction of the cabinet body 1, and the fork-joint unit 4 and the top plate 14 of the second compartment 3 may be relatively fixed by welding, bolting, or the like. Therefore, the specific fixing method between the fork-joint unit 4 and the top plate 14 of the second compartment 3 is not a restrictive provision of this embodiment.

[0069] In one case of this embodiment, if Figure 2-Figure 4 As shown, it also includes: a support bracket 8 arranged on the inner walls on both sides of the cabinet 1 in the length direction or the width direction, and a plurality of support brackets 8 are distributed at equal intervals along the height direction of the cabinet 1; the battery pack to be installed is supported by two support brackets 8 at the same height.

[0070] It can be known that the support frame 8 provided inside the cabinet 1 is used to support the battery pack to ensure that the internal battery packs are arranged in sequence. For example, the support frame 8 can be a tripod fixedly connected or detachably connected to the inside of the cabinet 1, and of course it can also be a square block or a circular plate with a flat top, etc. The specific structure of the support frame 8 is not a restrictive provision of this embodiment.

[0071] In another case of this embodiment, if Figure 5 As shown, one of the two outer side walls of the cabinet 1 opposite to the first cabin 2 is provided with a first opening, and the outer wall of the cabinet 1 is openably provided with a first cabinet door 9 for closing the first opening; at least one of the two outer side walls of the cabinet 1 opposite to the second cabin 3 is provided with a second opening, and the outer wall of the cabinet 1 is openably provided with a second cabinet door 10 for closing the second opening; the fork unit 4 is arranged inside the cabinet 1 between the first opening and the second opening.

[0072] It can be known that the first cabinet door 9 and the second cabinet door 10 are used to facilitate the closing and opening of the first opening, so that the battery pack, PCS and water cooling unit can be placed in corresponding positions during production. The heat dissipation holes provided on the second cabinet door 10 can also be connected to the outside to realize heat exchange in the thermal management process. The specific arrangement and number of the second cabinet door 10 can be selected according to needs, and this embodiment does not make any specific limitations here.

[0073] This embodiment also provides an energy storage system, including: the energy storage cabinet as described above, battery packs stacked in sequence in the height direction in the first compartment 2, and a PCS and / or thermal management unit arranged inside the second compartment 3.

[0074] Specifically, using the above-mentioned energy storage cabinet, the first compartment 2 is used to place the battery assembly, and the second compartment 3 is used to place the inverter or the thermal management unit. Since the battery occupies most of the weight of the entire energy storage cabinet, the overall center of gravity of the energy storage cabinet is located in the upper middle part; through the fork unit 4 provided between the first compartment 2 and the second compartment 3, the fork position of the transfer machinery is set between the first compartment 2 and the second compartment 3, so that the distance of the fork position relative to the first compartment 2 for placing the battery assembly is shortened, thereby effectively shortening the distance of the center of gravity of the energy storage system relative to the fork position, thereby reducing the risk of tipping over during fork transportation of the energy storage system and improving the stability of the energy storage system during transportation.

[0075] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An energy storage cabinet, characterized in that: include: The cabinet has a receiving space formed inside; a first compartment configured to house a battery assembly; A second compartment is configured to accommodate at least one of a PCS and a thermal management unit, wherein the first compartment and the second compartment are distributed in the cabinet along a descending direction of the cabinet height; The fork connection unit is arranged on the cabinet body and distributed between the first compartment and the second compartment in the height direction, and is configured to be inserted by a forklift rod so as to transport the cabinet body to a preset position.

2. The energy storage cabinet according to claim 1, characterized in that: Also includes: The third compartment is formed between the bottom plate of the first compartment and the top plate of the second compartment; the fork connection unit is installed inside the third compartment and at least one end is exposed from the outer wall of the cabinet.

3. The energy storage cabinet according to claim 2, characterized in that: The fork connection unit comprises: at least two connectors which are arranged in parallel in sequence along the length direction or the width direction of the cabinet, and each of the connectors is provided with a connector hole for the forklift rod to penetrate.

4. The energy storage cabinet according to claim 3, characterized in that: The plug-in connector extends from an outer wall on one side of the cabinet to an outer wall on the other side of the cabinet opposite thereto.

5. The energy storage cabinet according to claim 3 or 4, characterized in that: The number of the plug connectors is two, and they are symmetrically distributed at two ends of the cabinet along the width direction of the cabinet.

6. The energy storage cabinet according to claim 3 or 4, characterized in that: The plug connector is configured as a forklift slot, and the plug hole is configured as a square hole that passes through the forklift slot and matches the shape of a forklift rod to be inserted.

7. The energy storage cabinet according to claim 4, characterized in that: Also includes: The decorative plate is detachably mounted on one side outer wall of the cabinet and is configured to be opposite to the plug-in component to block one end port of the plug-in hole.

8. The energy storage cabinet according to claim 2, characterized in that: The third chamber is filled with a heat-insulating layer, and the heat-insulating layer is wrapped around the periphery of the fork-joint unit.

9. The energy storage cabinet according to claim 1, characterized in that: Also includes: The load-bearing beam is fixedly connected to the load-bearing column of the cabinet body, and a plurality of beams are sequentially arranged along the length direction or the width direction of the cabinet body; the bottom plate of the first cabin is fixed above each of the load-bearing beams, and the fork-joining unit is fixedly installed on the top plate of the second cabin.

10. The energy storage cabinet according to claim 1, characterized in that: Also includes: The support brackets are arranged on the inner walls on both sides of the cabinet in the length direction or the width direction, and a plurality of support brackets are evenly spaced along the height direction of the cabinet; the support brackets are configured to support the battery pack to be installed by two support brackets at the same height.

11. The energy storage cabinet according to claim 1, characterized in that: One of the two outer side walls of the cabinet body opposite to the first compartment is provided with a first opening, and the outer wall of the cabinet body is provided with a first cabinet door for closing the first opening in an openable and closable manner; At least one of the two outer side walls of the cabinet body opposite to the second compartment is provided with a second opening, and the outer wall of the cabinet body is provided with a second cabinet door for closing the second opening in an openable and closable manner; The fork unit is arranged inside the cabinet between the first opening and the second opening along the height direction.

12. An energy storage system, characterized in that: include: The energy storage cabinet according to any one of claims 1 to 11, the battery packs stacked in sequence in the first compartment along the height direction, and the PCS and / or thermal management unit arranged inside the second compartment.

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