Liquid cooling alternating current energy storage prefabricated cabin

Abstract

The utility model discloses a liquid cooling alternating current energy storage prefabricated cabin, which comprises a cabinet body, a cabinet door, a liquid cooling host, a liquid cooling main pipeline, a battery pack and an energy storage converter, the cabinet door is arranged on the front side of the cabinet body, the liquid cooling host is fixed on the inner side face of the cabinet door, the battery pack and the energy storage converter are arranged in the cabinet body, and the liquid cooling main pipeline is fixed on the inner side wall of the cabinet body, connected with the battery pack and the energy storage converter through the liquid cooling branch circuits and used for providing cooling liquid for the battery pack and the energy storage converter. The liquid cooling main pipeline and the liquid cooling host are connected through a corrugated pipe; the cabinet door is provided with an air inlet mesh and an air outlet mesh, and the air inlet mesh and the air outlet mesh respectively correspond to an air inlet and an air outlet of the liquid cooling host. According to the prefabricated cabin, single-side in-out, single-side door opening and single-side maintenance can be achieved, then the cabinet bodies can be arranged in a back-to-wall mode or a back-to-back mode or a left-and-right cabinet splicing mode conveniently, the occupied area and the maintenance space needed by installation are reduced, and reliability, appearance integrity and attractiveness are improved.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage technology, and specifically relates to a liquid-cooled AC energy storage prefabricated cabin. Background Technology

[0002] Commercial and industrial energy storage is extremely sensitive to the floor space of its cabinets due to the complexity of its application scenarios and the limited space available to users at the site. Currently, a 125kW / 261kWh liquid-cooled energy storage cabinet occupies approximately 1 meter wide and 1.5 meters deep. The installation dimensions are primarily limited by the external dimensions of the battery pack, followed by the space requirements for the cabinet's temperature control and ventilation system, as well as maintenance needs.

[0003] Regarding installation size requirements, the industry generally requires that side-by-side cabinets be allowed. However, due to the structural reasons of the air-cooled energy storage converters, air conditioners, or liquid-cooled main units used in industrial and commercial energy storage products, most cabinets have a front-intake and rear-exhaust heat dissipation structure. This means that when installing the cabinet, a gap of more than 0.5 meters still needs to be reserved behind the cabinet. However, the land use conflicts at the equipment installation sites of many projects are prominent, and many projects cannot provide enough installation space due to site limitations. As a result, the heat dissipation space behind the cabinet has to be compressed, which reduces the heat dissipation efficiency of the equipment to a certain extent. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a liquid-cooled AC energy storage prefabricated cabin to overcome or at least partially solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a prefabricated liquid-cooled AC energy storage compartment, including a cabinet, cabinet door, liquid-cooled main unit, liquid-cooled main pipeline, battery pack and energy storage converter;

[0007] The cabinet door is located on the front side of the cabinet body. The liquid cooling unit is fixed on the inner side of the cabinet door. The battery pack and the energy storage converter are located inside the cabinet body. The main liquid cooling pipeline is fixed on the inner side wall of the cabinet body and is connected to the battery pack and the energy storage converter through liquid cooling branch pipelines to provide coolant to the battery pack and the energy storage converter. The main liquid cooling pipeline and the liquid cooling unit are connected by a corrugated pipe. The cabinet door has air inlet and air outlet mesh holes, which correspond to the air inlet and air outlet positions of the liquid cooling unit, respectively.

[0008] Furthermore, an annular door panel reinforcing rib is fixed on the inner side of the cabinet door, the liquid cooling unit is located inside the annular door panel reinforcing rib and is fixedly connected to the door panel reinforcing rib by bolts, and a sealing strip is provided between the liquid cooling unit and the door panel reinforcing rib.

[0009] Furthermore, the door panel reinforcing ribs are fixed to the cabinet door by welding, and the weld joints are coated with sealant.

[0010] Furthermore, a slope is formed on the door panel reinforcing rib at the lower part of the cabinet door, so that a water collection cavity is formed between the lower end of the liquid cooling host, the slope and the cabinet door, and a drainage mesh hole is opened on the cabinet door at the water collection cavity.

[0011] Furthermore, a first exhaust pressure relief mesh is provided at the bottom of the cabinet door, and a second exhaust pressure relief mesh is provided at the top of the cabinet door. A first blower is provided inside the first exhaust pressure relief mesh, which is used to draw air from outside the cabinet into the cabinet through the first exhaust pressure relief mesh. A second blower is provided inside the second exhaust pressure relief mesh, which is used to blow air from inside the cabinet out of the cabinet through the second exhaust pressure relief mesh.

[0012] Furthermore, the air inlet mesh and the air outlet mesh are formed by stamping.

[0013] Furthermore, it also includes dehumidifiers;

[0014] The dehumidifier is installed inside the cabinet to control the humidity inside the cabinet.

[0015] Furthermore, it also includes a battery management system main control box, a power distribution main control box, and a fire control box installed inside the cabinet, wherein the fire control box is used to control the gas fire suppression system inside the cabinet;

[0016] The battery pack, the battery management system main control box, the fire control box, and the energy storage converter are arranged sequentially from top to bottom, and the power distribution main control box is fixed on the inner side wall of the cabinet.

[0017] Furthermore, it also includes water fire-fighting pipes installed inside the cabinet;

[0018] The water fire-fighting pipeline is fixed to the inner wall of the cabinet.

[0019] Furthermore, each corner of the top of the cabinet is provided with a hanging ring or hook.

[0020] The advantages and beneficial effects of this utility model are:

[0021] In this utility model of a prefabricated liquid-cooled AC energy storage compartment, the liquid-cooled main unit is concealed on the inner side of the cabinet door, allowing the air inlet and outlet of the liquid-cooled main unit to enter and exit through the front of the prefabricated compartment. This enables the prefabricated compartment to achieve single-sided entry and exit, single-sided door opening, and single-sided maintenance, facilitating the prefabricated compartment to be set up back-to-wall, back-to-back, or side-to-side. This effectively reduces the floor space and maintenance space required for the installation of the prefabricated compartment, and improves the reliability, overall appearance, and aesthetics of the prefabricated compartment. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a three-dimensional structural diagram of a prefabricated liquid-cooled AC energy storage compartment in one embodiment of the present invention;

[0024] Figure 2 This is a front view of a prefabricated liquid-cooled AC energy storage compartment in one embodiment of the present invention;

[0025] Figure 3 This is a left view of a prefabricated liquid-cooled AC energy storage compartment in one embodiment of the present invention;

[0026] Figure 4 This is a cross-sectional view of the cabinet door along the vertical direction in one embodiment of the present invention;

[0027] Figure 5 for Figure 4 The structural diagram at point A in the middle.

[0028] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Liquid cooling unit; 4. Air inlet mesh; 5. Air outlet mesh; 6. Door panel reinforcing rib; 7. Sealing strip; 8. Slope; 9. Drainage mesh; 10. First exhaust pressure relief mesh; 11. Second exhaust pressure relief mesh; 12. Hanging ring; 13. Water collection chamber. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0031] One embodiment of this utility model provides a prefabricated liquid-cooled AC energy storage cabin, such as... Figures 1 to 4 As shown, the prefabricated liquid-cooled AC energy storage compartment includes a cabinet 1, a cabinet door 2, a liquid-cooled main unit 3, a liquid-cooled main pipeline, a battery pack, and an energy storage converter.

[0032] Specifically, cabinet door 2 is located on the front side of cabinet body 1, with one side of cabinet door 2 hinged to cabinet body 1, allowing cabinet door 2 to rotate relative to cabinet body 1. Liquid-cooled main unit 3 is fixed to the inner side of cabinet door 2, i.e., fixed to the side of cabinet door 2 closest to cabinet body 1, thus achieving concealed installation of liquid-cooled main unit 3, improving the reliability, overall appearance, and aesthetics of the prefabricated compartment. Furthermore, the battery pack and energy storage converter are housed inside cabinet body 1, with the main liquid-cooling pipeline fixed to the inner wall of cabinet body 1 and connected to the battery pack and energy storage converter via liquid-cooling branch lines, respectively, for power supply. The tank and energy storage converter provide coolant. The liquid cooling main pipeline and the liquid cooling host 3 are connected by a bellows. The liquid cooling host 3 can circulate coolant to the liquid cooling main pipeline. In this way, during the opening and closing of the door, the liquid cooling host 3 will rotate about 140° relative to the position of the liquid cooling main pipeline. By setting a bellows with good adjustable performance between the liquid cooling main pipeline and the liquid cooling host 3, the torsional and tensile compression deformations generated during the opening and closing of the door can be absorbed by the bellows, thereby reducing the stress on the liquid cooling main pipeline and ensuring that there is no coolant leakage during operation.

[0033] The liquid cooling main pipeline is divided into an inlet liquid cooling main pipe and an outlet liquid cooling main pipe. The inlet liquid cooling main pipe is connected to the liquid inlet of the battery pack or energy storage converter via an inlet liquid cooling branch pipe, and the outlet liquid cooling main pipe is connected to the liquid outlet of the battery pack or energy storage converter via an outlet liquid cooling branch pipe. This allows the coolant to flow from the liquid cooling unit, sequentially through the inlet liquid cooling main pipe and the inlet liquid cooling branch pipe to the battery pack or energy storage converter, carrying away heat from the battery pack or energy storage converter. Then, the coolant flows back to the liquid cooling unit sequentially through the outlet liquid cooling branch pipe and the outlet liquid cooling main pipe. This design shortens the piping installation, thereby reducing the pressure drop of the piping system, reducing both the space occupied by the piping and the piping cost.

[0034] In addition, the cabinet door 2 has air inlet mesh 4 and air outlet mesh 5, which correspond to the air inlet and air outlet positions of the liquid-cooled main unit 3, respectively. This allows the air inlet and air outlet of the liquid-cooled main unit 3 to be hidden behind the cabinet door 2, ensuring both ventilation and exhaust effects, as well as pressure relief and explosion-proof safety. This reduces the risk of secondary injury from damage and improves the safety of the prefabricated compartment. This design allows for single-sided access, single-sided door opening, and single-sided maintenance (i.e., only front maintenance is required). This facilitates the back-to-wall, back-to-back, or side-by-side assembly of the liquid-cooled AC energy storage prefabricated compartment, reducing the floor space and maintenance space required for installation and further improving the reliability, overall appearance, and aesthetics of the prefabricated compartment.

[0035] In summary, in this embodiment of the liquid-cooled AC energy storage prefabricated compartment, by concealing the liquid-cooled main unit on the inner side of the cabinet door, the air inlet and outlet of the liquid-cooled main unit can be accessed and vented through the front of the prefabricated compartment. This allows the prefabricated compartment to achieve single-sided access, single-sided door opening, and single-sided maintenance, facilitating the prefabricated compartment to be set up back-to-wall, back-to-back, or side-to-side. This effectively reduces the floor space and maintenance space required for the installation of the prefabricated compartment, and improves the reliability, overall appearance, and aesthetics of the prefabricated compartment.

[0036] In this embodiment, as Figure 4 As shown, an annular door panel reinforcing rib 6 is fixed on the inner side of the cabinet door 2. The door panel reinforcing rib 6 forms a rectangle around the door. The liquid cooling unit 3 is located inside the annular door panel reinforcing rib 6, that is, the liquid cooling unit 3 is located inside the rectangle and is fixedly connected to the door panel reinforcing rib 6 by bolts. A sealing strip 7 is provided between the liquid cooling unit 3 and the door panel reinforcing rib 6, thereby achieving a seal between the liquid cooling unit 3 and the door panel reinforcing rib 6 and ensuring that the waterproof rating can reach IP55.

[0037] In this design, the door panel reinforcing ribs are welded to the cabinet door, and sealant is applied to the weld joints, thereby indirectly achieving a seal between the liquid cooling unit and the cabinet door. Of course, in other embodiments, the door panel reinforcing ribs can also be fixed to the cabinet door using other fixing methods.

[0038] Furthermore, such as Figure 5 As shown, a slope 8 is formed on the lower door panel reinforcing rib 6 of the cabinet door 2, creating a water collection cavity 13 between the lower end of the liquid cooling unit 3, the slope 8, and the cabinet door 2. A drainage mesh hole 9 is provided on the cabinet door 2 at the location of the water collection cavity 13. This structure ensures that foreign objects and liquids entering the cabinet through the air inlet mesh hole 4 and the air outlet mesh hole 5 are blocked between the liquid cooling unit 3 and the door panel reinforcing rib 6. These liquids then collect in the water collection cavity 13 due to gravity and are finally discharged outside the cabinet through the drainage mesh hole 9. The drainage mesh hole is formed by stamping.

[0039] In this embodiment, as Figure 1 and Figure 2As shown, the lower part of the cabinet door 2 has a first exhaust pressure relief mesh 10, and the upper part of the cabinet door 2 has a second exhaust pressure relief mesh 11. The inner side of the first exhaust pressure relief mesh 10 is equipped with a first blower, which is used to draw air from outside the cabinet 1 into the cabinet 1 through the first exhaust pressure relief mesh 10. The inner side of the second exhaust pressure relief mesh 11 is equipped with a second blower, which is used to blow air from inside the cabinet 1 out to the outside of the cabinet 1 through the second exhaust pressure relief mesh 11. The air inlet mesh and the air outlet mesh are also formed by stamping, making the cabinet door panel an integral structure.

[0040] In this way, on the one hand, the air circulation inside the cabinet 1 can be realized through the first exhaust pressure relief mesh 10 and the second exhaust pressure relief mesh 11, thereby realizing heat dissipation and cooling inside the cabinet 1; on the other hand, the explosion-proof pressure relief inside the cabinet 1 can be realized through the first exhaust pressure relief mesh 10 and the second exhaust pressure relief mesh 11, reducing the risk of secondary injury and improving the safety of the product.

[0041] Furthermore, the liquid-cooled AC energy storage prefabricated cabin also includes a dehumidifier.

[0042] The dehumidifier is installed inside the cabinet to control the humidity inside the cabinet.

[0043] In addition, the liquid-cooled AC energy storage prefabricated compartment also includes a battery management system main control box, a power distribution main control box, and a fire control box installed inside the cabinet. The fire control box is used to control the gas fire suppression inside the cabinet.

[0044] Specifically, there are five battery packs. The five battery packs, the main control box of the battery management system, the fire control box and the energy storage converter are installed in a rack-mount manner from top to bottom. The main control box of the power distribution is fixed on the inner wall of the cabinet.

[0045] In this embodiment, the liquid-cooled AC energy storage prefabricated compartment also includes water fire-fighting pipes installed inside the cabinet.

[0046] The water fire-fighting pipeline is fixed on the inner wall of the cabinet to enable water fire-fighting inside the cabinet.

[0047] In addition, such as Figures 1 to 3 As shown, lifting rings 12 are provided at the corners of the top of the cabinet 1. The entire prefabricated cabin can be lifted by the lifting rings 12, which facilitates the transportation of the prefabricated cabin. The lifting rings can also be replaced by hooks, which are also within the protection scope of this utility model.

[0048] The above description is merely a specific embodiment of this utility model. Under the teachings of this utility model, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of this utility model, and the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A prefabricated liquid-cooled AC energy storage module, characterized in that, Includes cabinet, cabinet door, liquid cooling unit, liquid cooling main pipeline, battery pack and energy storage converter; The cabinet door is located on the front side of the cabinet body. The liquid cooling unit is fixed on the inner side of the cabinet door. The battery pack and the energy storage converter are located inside the cabinet body. The main liquid cooling pipeline is fixed on the inner side wall of the cabinet body and is connected to the battery pack and the energy storage converter through liquid cooling branch pipelines to provide coolant to the battery pack and the energy storage converter. The main liquid cooling pipeline and the liquid cooling unit are connected by a corrugated pipe. The cabinet door has air inlet and air outlet mesh holes, which correspond to the air inlet and air outlet positions of the liquid cooling unit, respectively.

2. The prefabricated liquid-cooled AC energy storage module according to claim 1, characterized in that, An annular door panel reinforcing rib is fixed on the inner side of the cabinet door. The liquid cooling unit is located inside the annular door panel reinforcing rib and is fixedly connected to the door panel reinforcing rib by bolts. A sealing strip is provided between the liquid cooling unit and the door panel reinforcing rib.

3. The prefabricated liquid-cooled AC energy storage compartment according to claim 2, characterized in that, The door panel reinforcing ribs are fixed to the cabinet door by welding, and the weld joints are coated with sealant.

4. The prefabricated liquid-cooled AC energy storage compartment according to claim 2, characterized in that, A slope is formed on the door panel reinforcing rib at the lower part of the cabinet door, so that a water collection cavity is formed between the lower end of the liquid cooling host, the slope and the cabinet door, and a drainage mesh hole is opened on the cabinet door at the water collection cavity.

5. The prefabricated liquid-cooled AC energy storage module according to claim 1, characterized in that, The lower part of the cabinet door has a first exhaust pressure relief mesh hole, and the upper part of the cabinet door has a second exhaust pressure relief mesh hole. A first blower is provided inside the first exhaust pressure relief mesh hole, which is used to draw air from outside the cabinet into the cabinet through the first exhaust pressure relief mesh hole. A second blower is provided inside the second exhaust pressure relief mesh hole, which is used to blow air from inside the cabinet through the second exhaust pressure relief mesh hole to the outside of the cabinet.

6. The prefabricated liquid-cooled AC energy storage module according to claim 1, characterized in that, The air inlet mesh and the air outlet mesh are formed by stamping.

7. The prefabricated liquid-cooled AC energy storage module according to claim 1, characterized in that, This also includes dehumidifiers; The dehumidifier is installed inside the cabinet to control the humidity inside the cabinet.

8. The prefabricated liquid-cooled AC energy storage module according to claim 1, characterized in that, It also includes a battery management system main control box, a power distribution main control box and a fire control box installed in the cabinet, wherein the fire control box is used to control the gas fire suppression system in the cabinet; The battery pack, the battery management system main control box, the fire control box, and the energy storage converter are arranged sequentially from top to bottom, and the power distribution main control box is fixed on the inner side wall of the cabinet.

9. The prefabricated liquid-cooled AC energy storage module according to claim 1, characterized in that, It also includes water fire-fighting pipes installed inside the cabinet; The water fire-fighting pipeline is fixed to the inner wall of the cabinet.

10. The prefabricated liquid-cooled AC energy storage compartment according to any one of claims 1 to 9, characterized in that, The cabinet is equipped with hanging rings or hooks at the corners of its top.

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