Liquid cooling energy storage cabinet and energy storage system

Abstract

The utility model is suitable for the technical field of energy storage equipment, and provides a liquid cooling energy storage cabinet and an energy storage system.When the liquid cooling energy storage cabinet is used for the energy storage system, a first air cooling assembly is used for directly cooling a device with large heat production in a first bin in an air cooling mode, and a second air cooling assembly is used for directly cooling a device with large heat production in a second bin in an air cooling mode; the interior can be effectively cooled, and heat accumulation is avoided; moreover, the first bin and the second bin are mutually separated and are respectively used as an independent temperature control area, so that the first air cooling assembly and the second air cooling assembly can exert the maximum effect while heat exchange between the first bin and the second bin is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of energy storage equipment, and in particular, relates to a liquid-cooled energy storage cabinet and an energy storage system. Background Art

[0002] As the world increases its support for the development of new energy technologies, various technologies related to energy storage have been widely used. Among them, energy storage systems have been widely used as a way of energy storage.

[0003] In the energy storage system, it is necessary to arrange energy storage batteries, battery racks, electrical components, liquid cooling units and other equipment in the limited space of the cabinet or box. The layout design of the internal space of the energy storage box / cabinet in the prior art fails to fully consider the optimal utilization of the internal space, and the internal heat dissipation channel is not well planned, resulting in heat accumulation inside the cabinet or box, which easily causes safety hazards. Utility Model Content

[0004] The present application provides a liquid-cooled energy storage cabinet and an energy storage system, which can solve the problem of insufficient internal heat dissipation in existing energy storage systems.

[0005] In a first aspect, the present application provides a liquid-cooled energy storage cabinet, comprising:

[0006] A cabinet body, wherein the cabinet body is divided into a first compartment and a second compartment along a length direction thereof;

[0007] A DC rack, disposed in the first compartment and used to store DC modules;

[0008] A liquid cooling component is arranged in the first compartment and is used to liquid cool the DC modules placed on the DC rack;

[0009] An AC rack, disposed in the second compartment and used to store AC modules;

[0010] An inverter rack is arranged in the second compartment and is used to store a bidirectional inverter;

[0011] A first air cooling component is disposed in the first compartment and corresponds to the liquid cooling component in the width direction of the cabinet, so as to cool the liquid cooling component; and

[0012] The second air cooling component is arranged in the second compartment and corresponds to the inverter rack in the width direction of the cabinet, so as to cool the bidirectional inverter placed on the inverter rack.

[0013] Optionally, the DC rack includes a battery cell control box rack and multiple battery cell racks arranged in the first compartment, and the battery cell control box rack, multiple battery cell racks, and the liquid cooling assembly are arranged in sequence from top to bottom along the height direction of the cabinet.

[0014] Optionally, the liquid cooling component includes a water chiller and a liquid cooling plate. The liquid cooling plate is arranged in the DC rack. The liquid cooling plate is connected to the water chiller to form a liquid cooling circuit. A cooling medium is arranged in the liquid cooling circuit.

[0015] Optionally, the first air cooling component includes a first air outlet, a first air inlet and a first fan. The first air outlet and the first air inlet are respectively arranged on opposite sides of the first warehouse along the width direction of the cabinet. The first fan is arranged in the first warehouse and close to the first air inlet. The first fan is used to drive the airflow from the first air inlet to the first air outlet.

[0016] Optionally, the second air cooling component includes a second air outlet, a second air inlet and a second fan. The second air outlet and the second air inlet are respectively arranged on opposite sides of the first warehouse along the width direction of the cabinet. The second fan is arranged in the second warehouse and close to the second air inlet. The second fan is used to drive the airflow from the second air inlet to the second air outlet.

[0017] Optionally, the second warehouse is also equipped with:

[0018] An electric control processing module mounting seat is used to store the electric control processing module;

[0019] UPS power supply rack, used to store UPS power supply;

[0020] Fire module rack for storing fire modules; and

[0021] STS switch rack, used to store STS switches;

[0022] Among them, the second warehouse is provided with the first placement position, the second placement position and the third placement position from top to bottom along the height direction of the cabinet body. The inverter rack is located at the first placement position, the UPS power rack and the fire protection module rack are both located at the second placement position, and the STS switch rack is located at the third placement position.

[0023] Optionally, the second compartment has a relative first cavity and a second cavity in the width direction of the cabinet, the electronic control processing module mounting seat, inverter rack, UPS power rack, STS switch rack and fire protection module rack are all located in the first cavity, and the AC rack is located in the second cavity.

[0024] Optionally, the length of the first bin in the length direction of the cabinet is greater than the length of the second bin in the length direction of the cabinet.

[0025] Optionally, first bin doors are respectively provided on two opposite sides of the first bin in the width direction, and second bin doors are respectively provided on two opposite sides of the second bin in the width direction.

[0026] In a second aspect, the present application also provides an energy storage system, comprising the liquid-cooled energy storage cabinet, a DC module, an AC module and a bidirectional inverter as described above, the DC module being placed on a DC rack, the AC module being placed on an AC rack, the bidirectional inverter being placed on an inverter rack, and the DC module and the AC module being electrically connected via the bidirectional inverter.

[0027] The above solution of the present application has the following beneficial effects:

[0028] When the liquid-cooled energy storage cabinet of the present application is used in an energy storage system, the first air-cooling component is used to directly cool down the device with large heat generation in the first compartment, and the second air-cooling component is used to directly cool down the device with large heat generation in the second compartment, so that the internal temperature can be effectively cooled to avoid heat accumulation; and the first compartment and the second compartment are separated from each other, each serving as a separate temperature control area, which can avoid heat exchange between the two while allowing the first air-cooling component and the second air-cooling component to play the maximum effect.

[0029] Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art 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 paying any creative work.

[0031] Figure 1 A schematic diagram of the structure of a liquid-cooled energy storage cabinet provided in an embodiment of the present application on one side in its width direction;

[0032] Figure 2 A schematic diagram of the structure of a liquid-cooled energy storage cabinet provided in an embodiment of the present application on the other side in its width direction;

[0033] Figure 3 A schematic diagram of the structure of a liquid cooling assembly provided in one embodiment of the present application;

[0034] Figure 4 A schematic diagram of the structure of a first air inlet and a second air inlet provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the structure of a first air outlet and a second air outlet provided in one embodiment of the present application.

[0036] [Description of Reference Numerals]

[0037] 1. Cabinet;

[0038] 11. First bin; 111. First bin door; 12. Second bin; 121. First cavity; 122. Second cavity; 123. Second bin door;

[0039] 2. DC rack;

[0040] 21. Battery cell control box frame; 22. Battery cell frame;

[0041] 3. Liquid cooling components;

[0042] 31. Chiller; 32. Liquid inlet pipe; 33. Liquid inlet branch pipe; 34. Liquid outlet pipe; 35. Liquid outlet branch pipe;

[0043] 4. Communication rack;

[0044] 5. Inverter rack

[0045] 61. The first air cooling component;

[0046] 611, first air outlet; 612, first air inlet; 613, first fan;

[0047] 62. Second air cooling assembly;

[0048] 621, second air outlet; 622, second air inlet; 623, second fan;

[0049] 7. Mounting seat for electronic control processing module;

[0050] 8. UPS power rack;

[0051] 9. Fire module rack;

[0052] 10. STS switch rack. DETAILED DESCRIPTION

[0053] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0054] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0055] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0056] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0057] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0058] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0059] The liquid-cooled energy storage cabinet and energy storage system provided in the present application are exemplarily described below in conjunction with specific embodiments.

[0060] First, as Figure 1 and Figure 2As shown, the liquid-cooled energy storage cabinet provided in the embodiment of the present application includes a cabinet 1, a DC rack 2, a liquid cooling component 3, an AC rack 4, an inverter rack 5, a first air cooling component 61 and a second air cooling component 62; the cabinet 1 is divided into a first compartment 11 and a second compartment 12 along its length direction; the DC rack 2 is arranged in the first compartment 11 and is used to store the DC power module; the liquid cooling component 3 is arranged in the first compartment 11 and is used to liquid cool the DC power module placed on the DC rack 2; the AC rack 4 is arranged in the second compartment 12 and is used to store the AC power module; the inverter rack 5 is arranged in the second compartment 12 and is used to store the bidirectional inverter; the first air cooling component 61 is arranged in the first compartment 11 and corresponds to the liquid cooling component 3 in the width direction of the cabinet 1, so as to cool the liquid cooling component 3; the second air cooling component 62 is arranged in the second compartment 12 and corresponds to the inverter rack 5 in the width direction of the cabinet 1, so as to cool the bidirectional inverter placed on the inverter rack 5.

[0061] The liquid-cooled energy storage cabinet provided in the present application is mainly used for energy storage systems. The cabinet body 1 is divided into a first compartment 11 and a second compartment 12. The liquid cooling component 3 of the first compartment 11 is used to liquid-cool the DC module placed on the DC rack 2. The heat-generating and heat-exchanging components in the first compartment 11 are mainly the liquid cooling components 3. The liquid cooling components 3 are air-cooled by the first air cooling component 61, so that the heat in the first compartment 11 is fully dissipated. The heat-generating and heat-exchanging components in the second compartment 12 are mainly the bidirectional inverters placed on the inverter rack 5. The second air cooling component 62 is used to air-cool them, so that the heat in the second compartment 12 is fully dissipated.

[0062] When the liquid-cooled energy storage cabinet of the present application is used in an energy storage system, the first air-cooling component 61 is used to directly cool down the devices with large heat generation in the first bin 11, and the second air-cooling component 62 is used to directly cool down the devices with large heat generation in the second bin 12, which can effectively cool down the interior and avoid heat accumulation. In addition, the first bin 11 and the second bin 12 are separated from each other, each serving as a separate temperature control area, which can avoid heat exchange between the two while also allowing the first air-cooling component 61 and the second air-cooling component 62 to play their maximum effectiveness.

[0063] In one embodiment, if Figure 1 As shown, the DC rack 2 includes a cell control box rack 21 and multiple cell racks 22 arranged in the first compartment 11. The cell control box rack 21, multiple cell racks 22, and the liquid cooling assembly 3 are arranged in sequence from top to bottom along the height direction of the cabinet 1.

[0064] The cell control box rack 21 is used to place the cell control box, the cell rack 22 is used to place the cell box, each cell rack 22 is placed with a cell box, and the liquid cooling assembly 3 is mainly used to liquid cool the cell box on the cell rack 22. In the above embodiment, the arrangement from top to bottom can make full use of the space in the first compartment 11 to reduce the volume of the overall energy storage cabinet.

[0065] In one embodiment, if Figure 1 and Figure 3 As shown, the liquid cooling assembly 3 includes a water chiller 31 and a liquid cooling plate (not shown in the figure). The liquid cooling plate is arranged in the DC rack 2. The liquid cooling plate is connected to the water chiller 31 to form a liquid cooling circuit. A cooling medium is arranged in the liquid cooling circuit.

[0066] By circulating the cooling medium in the liquid cooling loop, the DC module in the energy storage system is cooled. The chiller 31 in this embodiment is a mature technical means in the field, and the specific structure and working mode of the chiller 31 are not described in detail.

[0067] In a specific embodiment, the liquid cooling assembly 3 has a plurality of liquid cooling plates, and the plurality of liquid cooling plates are disposed one by one at the bottom of the plurality of battery cell racks 22 to cool the battery cell boxes.

[0068] Preferably, Figure 3 As shown, the liquid cooling assembly 3 also has a liquid inlet pipeline and a liquid outlet pipeline; wherein the liquid inlet pipeline includes a liquid inlet main pipe 32 and a plurality of liquid inlet branches 33, one end of the liquid inlet main pipe 32 is connected to the liquid outlet of the chiller 31, and the other end is connected to a plurality of liquid inlet branches 33, and the end of each liquid inlet branch 33 not connected to the liquid inlet main pipe 32 is connected to the liquid inlet of a liquid cooling plate; the liquid outlet pipeline includes a liquid outlet main pipe 34 and a plurality of liquid outlet branches 35, one end of the liquid outlet main pipe 34 is connected to the liquid inlet of the chiller 31, and the other end is connected to a plurality of liquid outlet branches 35, and the end of each liquid outlet branch 35 not connected to the liquid outlet branch 35 is connected to the liquid outlet of a liquid cooling plate. The liquid cooling circuit has a simple structure and is easy to maintain.

[0069] In one embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first air cooling component 61 includes a first air outlet 611, a first air inlet 612 and a first fan 613. The first air outlet 611 and the first air inlet 612 are respectively arranged on opposite sides of the first warehouse 11 along the width direction of the cabinet 1. The first fan 613 is arranged in the first warehouse 11 and close to the first air inlet 612. The first fan 613 is used to drive the airflow from the first air inlet 612 to the first air outlet 611.

[0070] The first air outlet 611 and the first air inlet 612 are arranged along the width direction of the cabinet 1. The consistent wind direction can reduce wind resistance, reduce internal air flow disturbance, and facilitate gas convection ventilation and heat dissipation. The first fan 613 is located in the width direction of the cabinet 1, driving the air flow from the first air inlet 612 to the first air outlet 611 to achieve internal heat dissipation of the first compartment 11.

[0071] In one embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the second air cooling component 62 includes a second air outlet 621, a second air inlet 622 and a second fan 623. The second air outlet 621 and the second air inlet 622 are respectively arranged on opposite sides of the first warehouse 11 along the width direction of the cabinet 1. The second fan 623 is arranged in the second warehouse 12 and close to the second air inlet 622. The second fan 623 is used to drive the airflow from the second air inlet 622 to the second air outlet 621.

[0072] The second air outlet 621 and the second air inlet 622 are arranged along the width direction of the cabinet 1. The consistent wind direction can reduce wind resistance, reduce internal air flow disturbance, and facilitate gas convection ventilation and heat dissipation. The second fan 623 is located in the width direction of the cabinet 1, driving the air flow from the second air inlet 622 to the second air outlet 621 to achieve internal heat dissipation of the second compartment 12.

[0073] In one embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first air cooling assembly 61 and the second air cooling assembly 62 drive the airflow in the same direction to avoid internal airflow turbulence.

[0074] Specifically, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first air outlet 611 and the second air outlet 621 are located on the same side of the cabinet 1 in the width direction, and the first air inlet 612 and the second air inlet 622 are located on the other side of the cabinet 1 in the width direction.

[0075] In one embodiment, if Figure 1As shown, the second compartment 12 is also arranged with an electric control processing module mounting seat 7, a UPS power rack 8, a fire module rack 9 and an STS switch rack 10; the electric control processing module mounting seat 7 is used to store the electric control processing module; the UPS power rack 8 is used to store the UPS power supply; the fire module rack 9 is used to store the fire module; the STS switch rack 10 is used to store the STS switch; wherein, the second compartment 12 is provided with a first placement position, a second placement position and a third placement position from top to bottom along the height direction of the cabinet 1, the inverter rack 5 is located at the first placement position, the UPS power rack 8 and the fire module rack 9 are both located at the second placement position, and the STS switch rack 10 is located at the third placement position.

[0076] Through the above-mentioned structural setting, the space in the first compartment 11 can be utilized as much as possible by arranging it from top to bottom, so as to reduce the volume of the overall energy storage cabinet.

[0077] In a specific embodiment, Figure 1 and Figure 2 As shown, the second compartment 12 has a relative first cavity 121 and a second cavity 122 in the width direction of the cabinet 1, the electronic control processing module mounting seat 7, the inverter rack 5, the UPS power rack 8, the STS switch rack 10 and the fire protection module rack 9 are all located in the first cavity 121, and the AC rack 4 is located in the second cavity 122.

[0078] Since many devices need to be arranged in the second compartment 12, the second compartment 12 is configured in the width direction of the cabinet 1 to have a relative first cavity 121 and a second cavity 122. Each device is arranged in the first cavity 121 and the second cavity 122, respectively. The internal space is arranged with a high degree of integration to maximize space utilization.

[0079] In a more specific embodiment, Figure 2 As shown, the AC rack 4 is located at the bottom of the second cavity 122 , and the AC rack 4 and the inverter rack 5 are offset in the height direction of the cabinet 1 .

[0080] In terms of temperature control, in the second compartment 12, the bidirectional inverter generates the most heat, and the heat is collected at the top of the first cavity 121. In order not to block the heat dissipation channel of the bidirectional inverter (i.e., the second air-cooling component 62), and to keep the middle air outlet and the air inlet of the second air-cooling component 62 able to convect in the channel on the same horizontal plane, the AC rack 4 is staggered and arranged in the bottom of the second cavity 122, so that the heat generated in the second cavity 122 rises and is discharged to the external environment of the cabinet 1 through the second air-cooling component 62, so that the temperature rise inside the second cavity 122 is balanced, and the internal temperature of the cabinet 1 is kept within the optimal temperature operating state range of the device components. During the operation of the equipment, no heat accumulation high temperature fault or high temperature fault alarm will occur.

[0081] Specifically, Figure 2As shown, the second air outlet 621 of the second air cooling component 62 is located in the second cavity 122, the second fan 623 is arranged in the second cavity 122, and the second air inlet 622 is located in the first cavity 121, so that the heat generated by the AC power module on the AC rack 4 is directly driven by the first fan 613 to rise from the bottom of the second cavity 122 and be discharged from the second air outlet 621, thereby preventing it from entering the first cavity 121 and causing heat accumulation.

[0082] In one embodiment, if Figure 1 and Figure 2 As shown, the battery cell control box rack 21 in the first compartment 11 and the inverter rack 5 in the second compartment 12 are located at the same height of the cabinet 1, so that the cable connection between the battery cell control box and the bidirectional inverter is shorter and closer, which is convenient for connection, and the short distance saves the cost of wiring harness cables.

[0083] In one embodiment, if Figure 1 and Figure 2 As shown, the length of the first compartment 11 in the length direction of the cabinet 1 is greater than the length of the second compartment 12 in the length direction of the cabinet 1 .

[0084] The above structure is mainly used for maximizing space utilization when installing devices in the energy storage system, so as to reduce the volume of the overall energy storage cabinet.

[0085] In a specific embodiment, Figure 1 and Figure 2 As shown, in the first compartment 11, the battery control box, the battery box and the chiller 31 can be laid out horizontally in corresponding positions, and can be installed and removed by pushing, pulling and inserting. The liquid cooling plate is located at the bottom of the battery box. In order to make the cooling liquid surface a horizontal plane, reduce the internal liquid flow velocity resistance and the head is too high or the path is too far, and the battery box is not suitable for vertical placement, so a horizontal plug-in stacking arrangement is adopted. Therefore, the liquid cooling assembly 3, the battery control box rack 21 and the multiple battery racks 22 can be laid out horizontally along the length direction of the cabinet 1, that is, the length of the battery control box rack 21 along the length direction of the cabinet 1 is greater than the length of the cabinet 1 in the height direction, and the liquid cooling assembly 3 and the multiple battery racks 22 are the same.

[0086] In the second compartment 12, the inverter rack 5, UPS power rack 8, fire module rack 9 and STS switch rack 10 can be arranged vertically along the height direction of the cabinet 1, that is, the length of the inverter rack 5 along the height direction of the cabinet 1 is greater than the length of the cabinet 1 in the length direction, and the same is true for the UPS power rack 8, fire module rack 9 and STS switch rack 10. This structural setting enables the bidirectional inverter, UPS power, fire module and STS switch to be arranged vertically to reduce the volume of the energy storage cabinet.

[0087] Through the above-mentioned horizontal and vertical arrangements, the utilization of the internal space of the cabinet 1 is maximized, and the arrangement is compact and highly integrated.

[0088] In one embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first bin 11 is provided with first bin doors 111 on two opposite sides in the width direction, and the second bin 12 is provided with second bin doors 123 on two opposite sides in the width direction.

[0089] The first compartment door 111 and the second compartment door 123 can facilitate the inspection and maintenance of the components inside the cabinet 1 .

[0090] Specifically, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first air outlet 611 and the first air inlet 612 are respectively and correspondingly arranged on the two first compartment doors 111, the second air outlet 621 and the second air inlet 622 are respectively and correspondingly arranged on the two second compartment doors 123, and the second fan 623 is arranged on the second compartment door 123 having the second air outlet 621, and the electronic control processing module mounting seat 7 is arranged on the second compartment door 123.

[0091] In a second aspect, the present application also provides an energy storage system, comprising the liquid-cooled energy storage cabinet, a DC module, an AC module and a bidirectional inverter as described above, the DC module is placed on a DC rack 2, the AC module is placed on an AC rack 4, the bidirectional inverter is placed on an inverter rack 5, and the DC module and the AC module are electrically connected through the bidirectional inverter.

[0092] Among them, the AC power module is connected to the distribution box on the mains power grid side through the inlet and outlet cable seals at the bottom of the cabinet 1 to realize the charging and discharging functions of the energy storage system.

[0093] In a specific embodiment, 5 battery cell boxes are connected in series (a system with a DC voltage of less than 1000V), and the total positive and negative electrodes of the battery cell boxes are respectively connected to the total positive and negative quick-plug connectors on the battery cell control box. The DC power in the battery cell box is output through the components and control board in the battery cell control box and then connected to the bidirectional inverter through the quick-plug connector. The DC power is converted into AC power (about AC 380V) through the bidirectional inverter.

[0094] When there is AC power, the UPS power supply will give priority to 220v AC input and 24V output power supply (low-voltage power supply in the system). When there is no AC power, the UPS power supply will switch to the UPS power supply's built-in battery input and 24v output in milliseconds. The fire protection module power supply is 220v and is in working condition whether there is AC power or not. The STS switch is connected in parallel with the bidirectional inverter (voltage is about 380v AC), and it switches in milliseconds to stabilize the voltage and frequency. The electronic control processing module (EMS) is mainly connected to the communication power supply of each component, and ensures that the electronic control processing module (EMS) is powered on continuously. The electronic control processing module (EMS) monitors, collects and issues various processing instructions.

[0095] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A liquid-cooled energy storage cabinet, characterized in that: include: A cabinet body, wherein the cabinet body is divided into a first compartment and a second compartment along a length direction thereof; A DC rack, disposed in the first compartment and used to store DC modules; A liquid cooling component, disposed in the first compartment and used for liquid cooling of the DC modules placed on the DC rack; an AC rack, disposed in the second compartment and used to store AC power modules; An inverter rack, disposed in the second compartment and used to store a bidirectional inverter; A first air cooling component is disposed in the first compartment and corresponds to the liquid cooling component in the width direction of the cabinet, so as to cool the liquid cooling component; as well as The second air cooling component is arranged in the second compartment and corresponds to the inverter rack in the width direction of the cabinet, so as to cool the bidirectional inverter placed on the inverter rack.

2. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The DC rack includes a cell control box rack and a plurality of cell racks arranged in the first compartment. The cell control box rack, the plurality of cell racks, and the liquid cooling assembly are arranged in sequence from top to bottom along the height direction of the cabinet.

3. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The liquid cooling assembly includes a water chiller and a liquid cooling plate. The liquid cooling plate is arranged in the DC rack. The liquid cooling plate is connected to the water chiller to form a liquid cooling circuit. A cooling medium is arranged in the liquid cooling circuit.

4. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The first air cooling component includes a first air outlet, a first air inlet and a first fan. The first air outlet and the first air inlet are respectively arranged on opposite sides of the first bin along the width direction of the cabinet. The first fan is arranged in the first bin and close to the first air inlet. The first fan is used to drive the airflow from the first air inlet to the first air outlet.

5. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The second air cooling component includes a second air outlet, a second air inlet and a second fan. The second air outlet and the second air inlet are respectively arranged on opposite sides of the first warehouse along the width direction of the cabinet. The second fan is arranged in the second warehouse and close to the second air inlet. The second fan is used to drive the airflow from the second air inlet to the second air outlet.

6. The liquid-cooled energy storage cabinet according to any one of claims 1 to 5, characterized in that: The second warehouse is also equipped with: An electric control processing module mounting seat is used to store the electric control processing module; UPS power supply rack, used to store UPS power supply; Fire module rack for storing fire modules; and STS switch rack, used to store STS switches; Among them, the second warehouse is provided with a first placement position, a second placement position and a third placement position from top to bottom along the height direction of the cabinet, the inverter rack is located at the first placement position, the UPS power rack and the fire module rack are both located at the second placement position, and the STS switch rack is located at the third placement position.

7. The liquid-cooled energy storage cabinet according to claim 6, characterized in that: The second compartment has a first cavity and a second cavity relative to each other in the width direction of the cabinet, the electronic control processing module mounting seat, the inverter rack, the UPS power rack, the STS switch rack and the fire module rack are all located in the first cavity, and the AC rack is located in the second cavity.

8. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The length of the first bin in the length direction of the cabinet is greater than the length of the second bin in the length direction of the cabinet.

9. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The first bin is provided with first bin doors on two opposite sides in the width direction, and the second bin is provided with second bin doors on two opposite sides in the width direction.

10. An energy storage system, characterized in that: It comprises a liquid-cooled energy storage cabinet, a DC module, an AC module and a bidirectional inverter as described in any one of claims 1 to 9, wherein the DC module is placed on the DC rack, the AC module is placed on the AC rack, the bidirectional inverter is placed on the inverter rack, and the DC module and the AC module are electrically connected through the bidirectional inverter.

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