Energy storage device

Abstract

The utility model discloses an energy storage device, and relates to the technical field of energy storage. The energy storage device comprises a cabinet, a battery unit, a high-voltage unit, an inversion unit, a cooling control unit and a power supply unit, the cabinet is provided with a first cabinet bin and a second cabinet bin, and the first cabinet bin is located below the second cabinet bin; the battery unit is located in the first cabinet bin and electrically connected with the high-voltage unit. The high-voltage unit, the inversion unit, the cooling control unit and the power supply unit are all located in the second cabinet bin, the inversion unit, the cooling control unit and the power supply unit are electrically connected with the high-voltage unit, and the high-voltage unit is located between the inversion unit and the cooling control unit and located between the inversion unit and the power supply unit in the height direction of the cabinet. The energy storage device has the advantages of being reasonable in internal unit layout, simple in assembly and clear in wiring.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage device. Background Art

[0002] Industrial and commercial energy storage devices refer to energy storage technology equipment used in the industrial and commercial fields to manage, store and utilize electrical energy. In related technologies, the layout of each electrical unit inside the cabinet of industrial and commercial energy storage devices is unreasonable, resulting in chaotic wiring and large power loss of the product. Utility Model Content

[0003] In view of this, the present application provides an energy storage device, which has a reasonable internal unit layout, simple assembly, and clear wiring.

[0004] This application specifically adopts the following technical solutions:

[0005] An energy storage device, comprising: a cabinet, a battery unit, a high voltage unit, an inverter unit, a cooling control unit and a power supply unit;

[0006] The cabinet has a first cabinet compartment and a second cabinet compartment, and the first cabinet compartment is located below the second cabinet compartment;

[0007] The battery unit is located in the first cabinet and is electrically connected to the high voltage unit;

[0008] The high-voltage unit, the inverter unit, the cooling control unit and the power supply unit are all located in the second cabinet compartment, and the inverter unit, the cooling control unit and the power supply unit are electrically connected to the high-voltage unit respectively, wherein along the height direction of the cabinet, the high-voltage unit is located between the inverter unit and the cooling control unit, and between the inverter unit and the power supply unit.

[0009] Optionally, the inverter unit is located above the high voltage unit;

[0010] The cooling control unit and the power supply unit are located below the high voltage unit.

[0011] Optionally, the orthographic projection of the high-voltage unit on the first set projection plane is located within the orthographic projection of the cooling control unit on the first set projection plane, and is located outside the orthographic projection of the power supply unit on the first set projection plane; and / or,

[0012] The orthographic projection of the inverter unit on the first set projection plane is located within the orthographic projection of the cooling control unit on the first set projection plane, and is located outside the orthographic projection of the power supply unit on the first set projection plane;

[0013] Wherein, the first set projection plane is perpendicular to the height direction of the cabinet.

[0014] Optionally, the second cabinet warehouse includes a first cabinet layer and a second cabinet layer arranged in sequence from top to bottom;

[0015] The high-voltage unit and the inverter unit are located in the first cabinet layer, and the high-voltage unit and the inverter unit are separated by a first partition;

[0016] The cooling control unit and the power supply unit are located in the second cabinet layer, the cooling control unit is located beside the power supply unit, and the cooling control unit and the power supply unit are separated by a second partition.

[0017] Optionally, the device also includes a bus unit electrically connected to the high-voltage unit, the bus unit is located in the first cabinet layer and is located next to the high-voltage unit and the inverter unit, and the bus unit is separated from the high-voltage unit and the inverter unit by a third partition.

[0018] Optionally, the orthographic projection of the power supply unit on the second set projection plane is located within the orthographic projection of the confluence unit on the second set projection plane; and / or,

[0019] The orthographic projection of the cooling control unit on the second set projection plane and the orthographic projection of the confluence unit on the second set projection plane have an overlapping area;

[0020] Wherein, the second set projection plane is perpendicular to the height direction of the cabinet.

[0021] Optionally, the cabinet has a cooling compartment plate for separating the first compartment and the second compartment, the cooling compartment plate is hollow inside and is connected to the cooling control unit;

[0022] The device comprises a cooling pipeline fixed on the wall of the first cabinet, the cooling pipeline has a first interface and a second interface, the first interface is connected to the interior of the cooling cabinet plate, and the second interface is connected to the battery unit;

[0023] A cooling medium circulates in the cooling control unit, the cooling bin plate and the cooling pipeline.

[0024] Optionally, the battery unit comprises at least two battery packs stacked along the height direction of the cabinet, each of the battery packs comprising a battery cell and a cooling core shell sleeved outside the battery cell;

[0025] The cooling pipeline has at least two second interfaces, and the at least two second interfaces are respectively connected to the cooling core shells of the at least two battery packs.

[0026] Optionally, the device comprises a fire fighting unit, and the fire fighting unit comprises:

[0027] A first fire extinguishing module disposed inside the battery unit; and / or,

[0028] A second fire extinguishing module is arranged on the top of the first cabinet.

[0029] Optionally, the fire fighting unit further comprises a fire fighting interface, which is arranged on the cabinet and is connected to the first cabinet compartment, and the fire fighting interface is used to inject a fire extinguishing medium into the first cabinet compartment.

[0030] The energy storage device provided by the embodiment of the present application includes a cabinet, and a battery unit, a high-voltage unit, an inverter unit, a cooling control unit and a power supply unit installed in the cabinet, wherein the battery unit, the inverter unit, the cooling control unit and the power supply unit are electrically connected to the high-voltage unit respectively. The energy storage device provided by the embodiment of the present application has a reasonable layout of each unit in the cabinet. Specifically, on the one hand, the lower part of the cabinet has a first cabinet compartment for accommodating the battery unit; the upper part of the cabinet has a second cabinet compartment for accommodating the high-voltage unit, the inverter unit, the cooling control unit and the power supply unit. Therefore, the battery unit is independently arranged at the lower part of the cabinet, and its cooling design is more convenient and not easy to interfere with other units; on the other hand, in the second cabinet compartment, along the height direction of the cabinet, the high-voltage unit is located between the inverter unit and the cooling control unit, and between the inverter unit and the power supply unit. Therefore, each unit is close to the high-voltage unit, the wiring is convenient and the wiring length is short, thereby preventing wiring disorder, making the product assembly more concise, and reducing the power loss of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 is a structural schematic diagram of an energy storage device provided in an embodiment of the present application;

[0033] Figure 2 It is a structural schematic diagram of a cabinet provided in an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the front structure of an energy storage device provided in an embodiment of the present application;

[0035] Figure 4It is a schematic diagram of the back structure of an energy storage device provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 1. Cabinet; 11. First cabinet compartment; 12. Second cabinet compartment; 121. First cabinet layer; 122. Second cabinet layer; 123. First partition; 124. Second partition; 125. Third partition; 13. Cooling compartment plate; 131. First coolant interface; 132. Second coolant interface; 14. Cabinet body; 15. Cabinet door;

[0038] 2. Battery cell; 21. Battery pack;

[0039] 3. High voltage unit;

[0040] 4. Inverter unit;

[0041] 5. Cooling control unit;

[0042] 6. Power supply unit; 61. Fan;

[0043] 7. Convergence unit; 71. Junction box;

[0044] 8. Cooling pipeline; 81. First interface; 82. Second interface;

[0045] 9. Fire fighting unit; 91. Second fire fighting module; 92. Fire fighting interface;

[0046] 10. Pallet assembly;

[0047] 110. Hook;

[0048] 120. Pressure relief valve;

[0049] 130. Energy management unit. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0052] like Figure 1As shown, an embodiment of the present application provides an energy storage device, which includes a cabinet 1, and a battery unit 2, a high-voltage unit 3, an inverter unit 4, a cooling control unit 5 and a power supply unit 6 installed inside the cabinet 1.

[0053] The cabinet 1 includes a cabinet body 14 and a cabinet door 15. Figure 1 As shown, the cabinet 14 is hollow inside and one side is open, and the cabinet door 15 is installed on the open side of the cabinet 14 and can rotate relative to the cabinet 14 to open or close the internal space of the cabinet 14. The cabinet 14 has a first cabinet compartment 11 and a second cabinet compartment 12. The first cabinet compartment 11 and the second cabinet compartment 12 each have a storage space for accommodating a corresponding electrical unit. The first cabinet compartment 11 and the second cabinet compartment 12 are arranged along the height direction of the cabinet 1 and are located below the second cabinet compartment 12.

[0054] It should be understood that in the embodiment of the present application, the up and down direction is parallel to the height direction of the cabinet 1 (and the cabinet body 14), and the first cabinet compartment 11 is located below the second cabinet compartment 12, which means that the height of the position of the first cabinet compartment 11 on the cabinet 1 is lower than the height of the position of the second cabinet compartment 12, that is, the first cabinet compartment 11 is closer to the bottom of the cabinet body 14, and the second cabinet compartment 12 is closer to the top of the cabinet body 14.

[0055] like Figure 1 As shown, the battery unit 2 is located in the first cabinet compartment 11, and the remaining electrical units such as the high voltage unit 3, the inverter unit 4, the cooling control unit 5, the power supply unit 6, etc. are all located in the second cabinet compartment 12. Therefore, the setting position of the battery unit 2 is independent of the setting positions of other electrical units, and after the cabinet door 15 is closed, the first cabinet compartment 11 where the battery unit 2 is located is sealed. Therefore, when designing a cooling system for the battery unit 2 later, the design layout is more convenient, it is not easy to interfere with other units, and it is also convenient for cooling and fire protection design.

[0056] Continue to see Figure 1 In the second cabinet compartment 12, along the height direction of the cabinet 1, the high-voltage unit 3 is located between the inverter unit 4 and the cooling control unit 5, and between the inverter unit 4 and the power supply unit 6, and the battery unit 2, the inverter unit 4, the cooling control unit 5 and the battery unit 2 are electrically connected to the high-voltage unit 3. Therefore, the high-voltage unit 3 and the other units are arranged adjacent to each other, and when the electrical connection is performed, the wiring is convenient and the wiring length is short, so that the wiring disorder can be prevented, the product assembly is more concise, and the power loss of the product is reduced.

[0057] To sum up, the energy storage device provided in the embodiment of the present application has a reasonable internal layout of the cabinet 1, and the battery unit 2 is installed at the lower part of the cabinet 1, which facilitates the cooling design of the battery unit 2; the remaining electrical units are installed at the upper part of the cabinet 1 and arranged around the high-voltage unit 3, thereby shortening the wiring distance of the electrical connection, making the wiring between the electrical units inside the cabinet 1 neat, reducing power consumption, and making the product assembly simpler.

[0058] Optionally, the inverter unit 4 adopts a PCS (Power Conversion System). The PCS is a device that converts the DC power stored in the battery into AC power. It includes components such as an inverter and a transformer, which are used to convert the DC power output by the battery unit 2 into AC power to supply the power grid or other loads.

[0059] Optionally, the cooling control unit 5 adopts a liquid cooling control system, which includes a liquid cooling machine, a circulation pump, a refrigerator (or a heat exchanger), etc. The liquid cooling machine is connected to the circulation pump and the refrigerator signal, and is used to control the flow rate of the cooling medium through the circulation pump, and to control the temperature of the cooling medium through the refrigerator (or heat exchanger). The liquid cooling control system is used to provide cooling for the battery unit 2 to prevent the battery unit 2 from being overheated during operation.

[0060] Optionally, the power supply unit 6 adopts a UPS (Uninterruptible Power System) power supply. A UPS power supply is a device used to protect electronic equipment from power fluctuations or power outages. Its main function is to automatically switch to a backup power supply when the power grid is interrupted or the voltage fluctuates, ensuring that the equipment can still operate normally in the event of a short power outage.

[0061] Optionally, an EMS (Energy Management System) is integrated in the high-voltage unit 3, and the EMS is used to control each unit electrically connected to the high-voltage unit 3, thereby realizing overall energy control of the energy storage device. In one example, the EMS control plug-in box is directly integrated on the high-voltage unit 3 through an electrical connector.

[0062] In some embodiments of the present application, Figure 1 As shown, the inverter unit 4 is located above the high voltage unit 3 , and the cooling control unit 5 and the power supply unit 6 are located below the high voltage unit 3 .

[0063] In this way, the installation and arrangement of the inverter unit 4, the high-voltage unit 3, the cooling control unit 5 and the power supply unit 6 inside the cabinet 1 can be facilitated. During assembly, the cooling control unit 5 can be installed first, and then the battery unit 2 can be installed, and the cooling control unit 5 can provide cooling for the battery unit 2; then the power supply unit 6, the high-voltage unit 3 and the inverter unit 4 can be installed in sequence from bottom to top. Therefore, the layout of each electrical unit in the second cabinet compartment 12 is reasonable and the wiring is neat.

[0064] The second cabinet compartment 12 is provided with mounting grooves for various electrical units. The shape and size of each mounting groove are designed according to the shape and size of the corresponding electrical unit to ensure that the electrical unit installed in each mounting groove is compatible with the shape of the mounting groove, thereby achieving a neat assembly effect.

[0065] Optionally, the cooling control unit 5 and the power supply unit 6 are arranged on the same layer, and the power supply unit 6 is located beside the cooling control unit 5, and the outer dimensions of the high-voltage unit 3 are smaller than the outer dimensions of the cooling control unit 5. In this case, the orthographic projection of the high-voltage unit 3 on the first set projection plane is located within the orthographic projection of the cooling control unit 5 on the first set projection plane, and is located outside the orthographic projection of the power supply unit 6 on the first set projection plane. The first set projection plane is perpendicular to the height direction of the cabinet 1.

[0066] Optionally, the inverter unit 4 is stacked with the high voltage unit 3, and the outer dimensions of the inverter unit 4 are smaller than the outer dimensions of the cooling control unit 5. In this case, the orthographic projection of the inverter unit 4 on the first set projection plane is located within the orthographic projection of the cooling control unit 5 on the first set projection plane, and is located outside the orthographic projection of the power supply unit 6 on the first set projection plane.

[0067] In some embodiments of the present application, Figure 2 As shown, the second cabinet compartment 12 includes a first cabinet layer 121 and a second cabinet layer 122 arranged in sequence from top to bottom. The high voltage unit 3 and the inverter unit 4 are located in the first cabinet layer 121, and the high voltage unit 3 and the inverter unit 4 are separated by a first partition 123. The cooling control unit 5 and the power supply unit 6 are located in the second cabinet layer 122, the cooling control unit 5 is located next to the power supply unit 6, and the cooling control unit 5 and the power supply unit 6 are separated by a second partition 124.

[0068] The first partition 123 can separate the space where the high-voltage unit 3 is located from the space where the inverter unit 4 is located, and the second partition 124 can separate the space where the cooling control unit 5 is located from the space where the power supply unit 6 is located.

[0069] In some examples, the first partition 123 or the second partition 124 may be hollow. In this case, the electrical units in the two separated spaces cannot pass through the corresponding partitions, but the two spaces still remain connected, which is conducive to heat dissipation.

[0070] In other examples, the first partition 123 and the second partition 124 may be completely closed, that is, not hollow. In this case, the electrical units in the two separated spaces cannot pass through the corresponding partitions, and the two spaces are independent and not connected, which is easy to assemble and has better independence.

[0071] like Figure 2 As shown, in some embodiments of the present application, the first partition 123 and the second partition 124 are both completely closed partitions. By providing the first partition 123 and the second partition 124, two electrical units located at the same cabinet layer can be separated to avoid mutual influence between them.

[0072] In some embodiments, Figure 4 As shown, in order to facilitate heat dissipation of the power supply unit 6, a fan 61 may be further provided behind the power supply unit 6 in the second cabinet layer 122. The rear refers to the side of the power supply unit 6 away from the cabinet door 15.

[0073] In some embodiments of the present application, the energy storage device also includes a convergence unit 7, which is located in the first cabinet layer 121 and next to the high-voltage unit 3 and the inverter unit 4. The convergence unit 7 is separated from the high-voltage unit 3 and the inverter unit 4 by a third partition 125.

[0074] The confluence unit 7 can be electrically connected to a plurality of external electrical devices, so as to supply power to these electrical devices. In the embodiment of the present application, the confluence unit 7 is electrically connected to the high voltage unit 3, and is used to draw power from the battery unit 2.

[0075] When the confluence unit 7 is assembled, it is located in the first cabinet layer 121, and thus is disposed adjacent to the high-voltage unit 3, which facilitates shortening the length of the connection line between the high-voltage unit 3, making the internal wiring of the cabinet 1 simple and reducing the power consumption of the product.

[0076] In some embodiments of the present application, the orthographic projection of the power supply unit 6 on the second set projection plane is located within the orthographic projection of the confluence unit 7 on the second set projection plane; the orthographic projection of the cooling control unit 5 on the second set projection plane has an overlapping area with the orthographic projection of the confluence unit 7 on the second set projection plane; wherein the second set projection plane is perpendicular to the height direction of the cabinet 1.

[0077] Optionally, the orthographic projection of the cooling control unit 5 on the second set projection plane may be completely located between the orthographic projections of the confluence unit 7 on the second set projection plane, or may partially overlap with the orthographic projection of the confluence unit 7 on the second set projection plane.

[0078] like Figure 2 As shown, in some embodiments of the present application, the cabinet 1 has a cooling plate 13 for separating the first cabinet compartment 11 and the second cabinet compartment 12, the cooling plate 13 is hollow inside, and is connected to the cooling control unit 5. The energy storage device includes a cooling pipeline 8 fixed on the wall of the first cabinet compartment 11, and the cooling pipeline 8 has a first interface 81 and a second interface 82, the first interface 81 is connected to the inside of the cooling plate 13, and the second interface 82 is connected to the battery unit 2. A cooling medium circulates in the cooling control unit 5, the cooling plate 13 and the cooling pipeline 8, so the battery unit 2 is cooled.

[0079] Optionally, the cooling medium may be a liquid medium, such as water or the like.

[0080] In one example, if Figure 1 As shown, at least one first coolant interface 131 is provided on the upper surface of the cooling bin plate 13, and the first coolant interface 131 is used to communicate with the coolant interface of the cooling control unit; at least one second coolant interface 132 is provided on the lower surface of the cooling bin plate 13, and the first coolant interface 132 is used to communicate with the first interface 81 of the cooling pipeline.

[0081] In some embodiments of the present application, the battery unit 2 includes at least two battery packs 21 stacked along the height direction of the cabinet 1, each battery pack 21 includes a battery cell (not shown in the figure) and a cooling core shell (not shown in the figure) sleeved on the outside of the battery cell; the cooling pipe 8 has at least two second interfaces 82, and the at least two second interfaces 82 are respectively connected to the cooling core shells of at least two battery packs 21.

[0082] When there are multiple battery packs 21 in the first compartment 11 (ie, greater than or equal to two), the cooling medium in the cooling pipeline 8 can cool multiple battery packs 21 at the same time.

[0083] In some examples, the number of cooling pipelines 8 is one, and the cooling pipeline 8 has two second interfaces 82, which are respectively connected to the cooling core shell of the battery pack 21 located at the top and the cooling core shell of the battery pack 21 located at the bottom of at least two battery packs 21. The cooling core shells of these battery packs 21 are hollow inside and are connected in sequence. The cooling medium flows from one second interface 82 into the cooling core shell of the battery pack 21 located at the bottom (or top), and flows through the cooling core shells of each battery pack 21 in sequence, and then flows from the cooling core shell of the battery pack 21 located at the top (or bottom) into another second interface 82, thereby realizing the circulation of the cooling medium.

[0084] In other examples, the number of cooling pipelines 8 is two, and each cooling pipeline 8 is provided with a second interface 82 corresponding to the number of at least two battery packs 21. The cooling core shell of each battery pack 21 is respectively connected to a second interface 82 on the two cooling pipelines 8, so that the cooling medium flows from one cooling pipeline 8 through the cooling core shell of one battery pack 21 and then flows into the other cooling pipeline 8 for circulation.

[0085] In some embodiments of the present application, the energy storage device also includes a fire extinguishing unit 9, which includes: a first fire extinguishing module (not shown in the figure) arranged inside the battery unit 2; and / or, a second fire extinguishing module 91 arranged on the top of the first cabinet 11.

[0086] In some examples, the first fire extinguishing module is an aerosol fire extinguishing agent. Each battery pack 21 is provided with the first fire extinguishing module, so that when an individual battery pack 21 catches fire, the aerosol fire extinguishing agent in the battery pack 21 can be released to extinguish the fire, thereby reducing the fire extinguishing cost and product loss. Therefore, the first fire extinguishing module can realize automatic fire extinguishing under low-risk fire conditions.

[0087] In some examples, such as Figure 3 As shown, the second fire extinguishing module 91 includes a fire extinguisher and a fire detector. The fire extinguisher can be, for example, a foam fire extinguisher, a gas fire extinguisher, etc., which is installed and fixed through the warehouse wall of the first cabinet 11, for example, installed on the top wall of the first cabinet 11, that is, on the cooling warehouse plate 13. The fire detector can be, for example, a smoke sensor and / or a flame sensor. In the case where multiple battery packs 21 catch fire and cause a lot of smoke / flames, or when the first fire extinguishing module fails to extinguish the fire after the battery pack 21 catches fire, causing a lot of smoke / flames, the smoke sensor will sense that the smoke concentration has reached a preset concentration, and the flame sensor will detect the appearance of flames, and then send out an alarm message, so that the fire extinguisher automatically starts to extinguish the fire. Therefore, the second fire extinguishing module 91 can realize automatic fire extinguishing under medium-risk fire conditions.

[0088] In some embodiments of the present application, Figure 4As shown, the fire protection unit 9 further includes a fire protection interface 92 , which is disposed on the cabinet 1 and communicated with the first cabinet compartment 11 . The fire protection interface 92 is used to inject a fire extinguishing medium into the first cabinet compartment 11 .

[0089] In some examples, the fire extinguishing medium is water, and the fire interface 92 is a water interface. In the case where the second fire extinguishing module 91 fails or the fire extinguishing fails, in order to quickly extinguish the fire, the fire interface 92 can be used to spray water into the first cabinet 11 to extinguish the fire. Since the first cabinet 11 is a closed space when the cabinet door 15 is closed, the water injection can quickly extinguish the fire source and prevent the fire from spreading further.

[0090] In order to ensure a better fire extinguishing effect, it should be understood that the fire protection interface 92 is located on the inner wall of the first cabinet 11 and is arranged close to the cooling cabinet plate 13.

[0091] In some embodiments of the present application, a pressure relief valve 120 is also provided on the cabinet 1, and the pressure relief valve 120 is connected to the first cabinet compartment 11, and is used to reduce the gas pressure in the first cabinet compartment 11. In the case where the operating temperature of the battery unit 2 is too high or a fire occurs, the gas pressure in the sealed first cabinet compartment 11 may be too high, and it is easy to explode. To avoid this situation, when it is detected that the gas pressure in the first cabinet compartment 11 is greater than the preset pressure, the pressure of the first cabinet compartment 11 can be relieved through the pressure relief valve 120. Among them, the gas pressure in the first cabinet compartment 11 can be detected by a pressure sensor.

[0092] Alternatively, if Figure 4 As shown, the pressure relief valve 120 is located below the fire protection interface 92 .

[0093] In some embodiments of the present application, Figure 3 As shown, the energy storage device also includes a support plate assembly 10 and a guide assembly (not shown in the figure). The support plate assembly 10 is fixed to the wall of the first cabinet 11, and is used to support at least two battery packs 21 respectively; the guide assembly is connected to the support plate assembly 10, or connected to the battery pack 21, or connected to the wall of the first cabinet 11, and is used to facilitate the installation of the battery pack 21.

[0094] Optionally, the guide assembly includes a first movable part and a second movable part, and the first movable part and the second movable part can slide together or roll together; the first movable part is connected to the pallet assembly or the warehouse wall of the first cabinet warehouse 11, and the second sliding part is connected to the battery pack 21.

[0095] In some examples, the first movable part is one of a slide rail and a slider, and the second movable part is the other of the slide rail and the slider.

[0096] In other examples, the first movable part is one of a ball bearing and a guide rail, and the second movable part is the other of the ball bearing and the guide rail.

[0097] In some embodiments of the present application, Figure 4 As shown, a hook 110 is provided on the top of the cabinet of the energy storage device, and the hook is used to hoist the cabinet 1 to meet the installation and layout requirements in different scenarios.

[0098] In some embodiments of the present application, Figure 3 As shown, the energy storage device further includes an energy management unit 130 connected to the EMS signal, the energy management unit 130 is installed on the cabinet door and includes a display control screen. The user can issue control instructions through the display control screen to achieve energy control.

[0099] When assembling the energy storage device provided in the embodiment of the present application, an optional assembly process is:

[0100] First, install the cooling control unit 5 (liquid cooler) into the corresponding installation slot in the second cabinet layer 122, then install the fire extinguisher in the second fire extinguishing module 91 into the installation position at the bottom of the cooling bin plate 13, and then install the battery unit 2, the high-voltage unit 3, the inverter unit 4, the EMS control plug-in box, the convergence unit 7, and the fire detector in the second fire extinguishing module 91 to the corresponding installation positions on the cabinet 1, and then install the EMU to the cabinet door 15 of the cabinet 1, and then install the cooling pipe 8, the access control switch of the cabinet door 15 (not shown in the figure), the fan 61 and other accessories in turn.

[0101] After assembling the above-mentioned electrical units, the cabinet door 15 needs to be closed to perform an air tightness test on the first cabinet compartment 11. After the air tightness test is passed, coolant is added to the cooling control unit 5, the cooling compartment plate 13 and the cooling pipeline 8. Finally, each electrical unit is electrically wired and electrically tested.

[0102] In summary, the energy storage device product provided in the embodiment of the present application has a reasonable design layout, and the battery unit 2 is installed at the lower part of the cabinet 1, which facilitates the design of the cooling pipe and makes the circulation of the cooling medium smoother; the support plate assembly 10 in the cabinet 1 can be made of square steel to support the installation of the battery pack 21 and other electrical units, thereby protecting the structural stability of the battery pack 21 and other electrical units, and each unit is neat and orderly after assembly.

[0103] Moreover, other electrical units except the battery unit 2 are installed on the upper part of the cabinet 1. The reasonable layout of the units in the first cabinet compartment 11 makes the connection line sequence of each unit shorter and clearer, greatly reducing the power loss of the wires and avoiding the disorder of the line sequence. The connection wires of the internal units can be hidden inside the sheet metal of the pallet assembly 10, for example, by opening a wire harness groove on the sheet metal, so that all connected wires are not exposed, thereby protecting the neatness and orderliness of the internal structure.

[0104] In addition, in the energy storage device, the cabinet body 14 of the cabinet 1 adopts an upper and lower structure design. The first cabinet compartment 11 is a closed battery compartment to prevent water ingress and facilitate fire extinguishing; ventilation holes are opened on the compartment wall of the second cabinet compartment 12 to facilitate ventilation design and cooling of each electrical unit; the cabinet 1 uses a cabinet door 15 to simultaneously close the first cabinet compartment 11 and the second cabinet compartment 12, thereby reducing costs.

[0105] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0106] The above description is only for the purpose of facilitating those skilled in the art to understand the technical solution of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage device, characterized in that: The device comprises: a cabinet (1), a battery unit (2), a high voltage unit (3), an inverter unit (4), a cooling control unit (5) and a power supply unit (6); The cabinet (1) comprises a first cabinet compartment (11) and a second cabinet compartment (12), wherein the first cabinet compartment (11) is located below the second cabinet compartment (12); The battery unit (2) is located in the first cabinet (11) and is electrically connected to the high-voltage unit (3); The high-voltage unit (3), the inverter unit (4), the cooling control unit (5) and the power supply unit (6) are all located in the second cabinet compartment (12), and the inverter unit (4), the cooling control unit (5) and the power supply unit (6) are respectively electrically connected to the high-voltage unit (3), wherein along the height direction of the cabinet (1), the high-voltage unit (3) is located between the inverter unit (4) and the cooling control unit (5), and is located between the inverter unit (4) and the power supply unit (6).

2. The device according to claim 1, characterized in that The inverter unit (4) is located above the high-voltage unit (3); The cooling control unit (5) and the power supply unit (6) are located below the high voltage unit (3).

3. The device according to claim 2, characterized in that The orthographic projection of the high-voltage unit (3) on the first set projection plane is located within the orthographic projection of the cooling control unit (5) on the first set projection plane, and is located outside the orthographic projection of the power supply unit (6) on the first set projection plane; and / or, The orthographic projection of the inverter unit (4) on the first set projection plane is located within the orthographic projection of the cooling control unit (5) on the first set projection plane, and is located outside the orthographic projection of the power supply unit (6) on the first set projection plane; Wherein, the first set projection plane is perpendicular to the height direction of the cabinet (1).

4. The device according to any one of claims 1 to 3, characterized in that: The second cabinet warehouse (12) comprises a first cabinet layer (121) and a second cabinet layer (122) arranged in sequence from top to bottom; The high-voltage unit (3) and the inverter unit (4) are located in the first cabinet layer (121), and the high-voltage unit (3) and the inverter unit (4) are separated by a first partition plate (123); The cooling control unit (5) and the power supply unit (6) are located in the second cabinet layer (122), the cooling control unit (5) is located beside the power supply unit (6), and the cooling control unit (5) and the power supply unit (6) are separated by a second partition (124).

5. The device according to claim 4, characterized in that The device further comprises a busbar unit (7) electrically connected to the high-voltage unit (3); the busbar unit (7) is located in the first cabinet layer (121) and beside the high-voltage unit (3) and the inverter unit (4); the busbar unit (7) is separated from the high-voltage unit (3) and the inverter unit (4) by a third partition plate (125).

6. The device according to claim 5, characterized in that The orthographic projection of the power supply unit (6) on the second set projection plane is located within the orthographic projection of the confluence unit (7) on the second set projection plane; and / or, The orthographic projection of the cooling control unit (5) on the second set projection plane and the orthographic projection of the confluence unit (7) on the second set projection plane have an overlapping area; Wherein, the second set projection plane is perpendicular to the height direction of the cabinet (1).

7. The device according to claim 1, characterized in that The cabinet (1) has a cooling compartment plate (13) for separating the first compartment (11) and the second compartment (12); the cooling compartment plate (13) is hollow inside and is connected to the cooling control unit (5); The device comprises a cooling pipeline (8) fixed on the wall of the first cabinet (11), the cooling pipeline (8) having a first interface (81) and a second interface (82), the first interface (81) being connected to the interior of the cooling cabinet plate (13), and the second interface (82) being connected to the battery unit (2); A cooling medium circulates in the cooling control unit (5), the cooling bin plate (13) and the cooling pipeline (8).

8. The device according to claim 7, characterized in that The battery unit (2) comprises at least two battery packs (21) stacked in a height direction of the cabinet (1), each of the battery packs (21) comprising a battery core and a cooling core shell sleeved outside the battery core; The cooling pipeline (8) has at least two second interfaces (82), and the at least two second interfaces (82) are respectively connected to the cooling core shells of the at least two battery packs (21).

9. The device according to claim 1, characterized in that The device comprises a fire fighting unit (9), wherein the fire fighting unit (9) comprises: a first fire extinguishing module arranged inside the battery unit (2); and / or, A second fire extinguishing module (91) is arranged on the top of the first cabinet (11).

10. The device according to claim 9, characterized in that The fire fighting unit (9) further comprises a fire fighting interface (92), wherein the fire fighting interface (92) is arranged on the cabinet (1) and is connected to the first cabinet compartment (11), and the fire fighting interface (92) is used to inject a fire extinguishing medium into the first cabinet compartment (11).

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