Overhead frequency conversion energy storage liquid cooling equipment

Abstract

The utility model discloses an overhead frequency conversion energy storage liquid cooling device which comprises a cabinet body, a liquid cooling loop, a refrigeration loop, an electric cabinet and a fan, and the liquid cooling loop, the refrigeration loop, the electric cabinet and the fan are all arranged in the cabinet body. The liquid cooling loop comprises a liquid cooling pipeline assembly, a circulating pump and a plate heat exchanger, the liquid cooling pipeline assembly is sequentially connected with the circulating pump and the plate heat exchanger, a liquid inlet pipe and a liquid outlet pipe are arranged on one side of the cabinet body, the liquid inlet pipe is communicated with the liquid inlet end of the circulating pump, and the liquid outlet pipe is connected with a thermal medium outlet of the plate heat exchanger; the refrigerating circuit comprises a refrigerating pipeline assembly, a compressor, a condenser and an electronic expansion valve. The refrigerating pipeline assembly is sequentially connected with the compressor, the condenser, the electronic expansion valve and the plate heat exchanger. The technical effects are that the internal space of the cabinet body is fully utilized, the overall structure is compact, and the occupied space is smaller; the fan is arranged in the cabinet body, the filter screens are arranged on the side face of the cabinet body, rapid heat dissipation can be guaranteed, and meanwhile the filter screens are convenient to disassemble, assemble and clean.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage temperature control systems, and particularly relates to a top-mounted variable-frequency energy storage liquid cooling device. Background Art

[0002] The existing energy storage temperature control systems have various structures and are characterized by personalized customization. Energy storage devices can generally be divided into air-cooled and liquid-cooled types from the perspective of refrigeration methods; according to different installation methods, they can be further divided into wall-mounted, integrated inside the box, top-mounted, etc.

[0003] Currently, in the industry, the wall-mounted air-cooled temperature control design has the characteristics of low failure rate, low risk of water leakage, and stable operation, but it has the disadvantages of large space occupation and low temperature control accuracy. It is suitable for equipment with sufficient space and not too high requirements for temperature control, generally with a temperature control range of 2°C - 5°C.

[0004] Although the integrated liquid-cooled unit inside the box greatly improves the temperature control accuracy, the occupied space also increases significantly, occupying more volume of the container. In addition to large space occupation, the air-cooled unit integrated inside the box also has the characteristics of high risk of water leakage and low control accuracy.

[0005] Although the top-mounted air-cooled air conditioner saves space, due to the generation of condensed water by the evaporator, once the condensate drain pipe is blocked or the water receiving box is not reasonably designed, it will cause water leakage at the top, seriously threatening the safety of the battery cluster.

[0006] In addition to the advantage of saving space, the top-mounted liquid-cooled unit also has the advantages of high safety and high control accuracy. The heat generated by heat dissipation devices such as the battery cluster and the electronic control box is cooled by the ethylene glycol solution through the plate heat exchanger and then sent back to the cooling plate to cool the heat dissipation devices. Its compact structure and reasonable internal layout are the key points of the design of the top-mounted liquid-cooled unit. In order to meet the needs of different installation environments, a refrigeration device with a compact structure, low wind noise, and small floor space has become an urgent need in the energy storage industry. Content of the Utility Model

[0007] Therefore, the utility model provides a top-mounted variable-frequency energy storage liquid cooling device to solve the above problems in the prior art.

[0008] In order to achieve the above object, the utility model provides the following technical solutions:

[0009] According to the first aspect of the utility model, a top-mounted variable-frequency energy storage liquid cooling device includes a cabinet, a liquid cooling circuit, a refrigeration circuit, an electronic control box, and a fan, and the liquid cooling circuit, the refrigeration circuit, the electronic control box, and the fan are all arranged inside the cabinet;

[0010] The liquid cooling circuit includes a liquid cooling pipeline assembly, a circulation pump, and a plate heat exchanger. The liquid cooling pipeline assembly is sequentially connected to the circulation pump and the plate heat exchanger. One side of the cabinet body is provided with a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is communicated with the liquid inlet end of the circulation pump, and the liquid outlet pipe is connected to the heat medium outlet of the plate heat exchanger;

[0011] The refrigeration circuit includes a refrigeration pipeline assembly, a compressor, a condenser, and an electronic expansion valve. The refrigeration pipeline assembly is sequentially connected to the compressor, the condenser, the electronic expansion valve, and the plate heat exchanger, and the cold medium outlet of the plate heat exchanger is connected to the inlet of the compressor.

[0012] Further, the liquid cooling circuit further includes an expansion tank. The expansion tank is arranged between the plate heat exchanger and the liquid outlet pipe. The liquid inlet of the expansion tank is connected to the heat medium outlet of the plate heat exchanger, and the liquid outlet of the expansion tank is connected to the liquid outlet pipe.

[0013] Further, the liquid cooling circuit further includes a heating pipe. The heating pipe is arranged between the circulation pump and the plate heat exchanger.

[0014] Further, the refrigeration circuit further includes a drying filter. The drying filter is arranged between the condenser and the electronic expansion valve.

[0015] Further, the refrigeration circuit further includes a liquid storage tank. The liquid storage tank is arranged between the condenser and the electronic expansion valve.

[0016] Further, a liquid replenishing pipe is further included. The liquid replenishing pipe is arranged outside the cabinet body, and the liquid replenishing pipe is communicated with the liquid cooling circuit.

[0017] Further, the cabinet body includes a bottom plate, a left filter screen mounting plate, a right filter screen mounting plate, a front air duct plate, a rear filter screen mounting plate, and a top plate. The left filter screen mounting plate and the right filter screen mounting plate are respectively arranged on the left and right sides of the bottom plate. The front air duct plate and the rear filter screen mounting plate are respectively arranged on the front and rear sides of the bottom plate. The top plate is arranged on the top of the bottom plate;

[0018] Side filter screens are respectively arranged on the left filter screen mounting plate and the right filter screen mounting plate, and a back filter screen is arranged on the rear filter screen mounting plate.

[0019] Further, chutes are respectively arranged on the upper and lower sides of the left filter screen mounting plate and the right filter screen mounting plate. The two side filter screens are respectively slidably connected to the left filter screen mounting plate and the right filter screen mounting plate through the corresponding chutes.

[0020] Furthermore, first and second baffles are respectively provided on the upper and lower sides of the rear filter screen mounting plate. The first baffle and the second baffle respectively form a first chute and a second chute with the rear filter screen mounting plate. The height of the first chute is greater than that of the second chute. The top and bottom of the back-facing filter screen are respectively located in the first chute and the second chute.

[0021] Furthermore, it also includes a plurality of fixing feet which are respectively arranged on the side surface of the cabinet body.

[0022] The top plate includes a front top cover plate and a rear top cover plate which are sequentially arranged along the front and rear directions of the bottom plate.

[0023] The utility model has the following advantages: It makes full use of the internal space of the cabinet body, with a compact overall structure and less occupied space. A blower is provided inside the cabinet body, and a plurality of filter screens are provided on the side surface of the cabinet body, which can ensure rapid heat dissipation. At the same time, each filter screen is convenient to disassemble and assemble, facilitating assembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained based on the provided drawings.

[0025] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0026] Figure 1 It is a three-dimensional view of a top-mounted variable-frequency energy storage liquid cooling device provided for some embodiments of the present utility model.

[0027] Figure 2 For Figure 1 view a.

[0028] Figure 3 It is a schematic diagram of the internal structure of a top-mounted variable-frequency energy storage liquid cooling device provided for some embodiments of the present utility model.

[0029] In the figure: 1. Bottom plate, 2. Left filter screen mounting plate, 3. Rear filter screen mounting plate, 4. Rear top cover plate, 5. Front top cover plate, 6. Right filter screen mounting plate, 7. Front air duct plate, 8. Fixed feet, 9. Lateral filter screen, 10. Backward filter screen, 11. Liquid cooling pipeline assembly, 12. Refrigeration pipeline assembly, 13. Expansion tank, 14. Liquid storage tank, 15. Drier filter, 16. Heating pipe, 17. Circulation pump, 18. Plate heat exchanger, 19. Electric control box, 20. Compressor, 21. Condenser, 22. Fan, 23. First baffle, 24. Second baffle, 25. Liquid inlet pipe, 26. Liquid outlet pipe, 27. Make-up liquid pipe. Detailed implementation manners

[0030] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment 1

[0032] As Figures 1 to 3 shown, a top-mounted variable-frequency energy storage liquid cooling device in the first aspect embodiment of the present utility model includes a cabinet body, a liquid cooling circuit, a refrigeration circuit, an electric control box 19 and a fan 22. The liquid cooling circuit, the refrigeration circuit, the electric control box 19 and the fan 22 are all arranged in the cabinet body. The electric control box 19 is used to control the start of the liquid cooling circuit, the refrigeration circuit and the fan 22;

[0033] The liquid cooling circuit includes a liquid cooling pipeline assembly 11, a circulation pump 17 and a plate heat exchanger 18. The liquid cooling pipeline assembly 11 is sequentially connected to the circulation pump 17 and the plate heat exchanger 18. A liquid inlet pipe 25 and a liquid outlet pipe 26 are arranged on one side of the cabinet body. The liquid inlet pipe 25 is communicated with the liquid inlet end of the circulation pump 17, and the liquid outlet pipe 26 is connected to the heat medium outlet of the plate heat exchanger 18;

[0034] The refrigeration circuit includes a refrigeration pipeline assembly 12, a compressor 20, a condenser 21 and an electronic expansion valve. The refrigeration pipeline assembly 12 is sequentially connected to the compressor 20, the condenser 21, the electronic expansion valve and the plate heat exchanger 18, and the cold medium outlet of the plate heat exchanger 18 is connected to the inlet of the compressor 20.

[0035] In this embodiment, it should be noted that the liquid cooling loop further includes an expansion tank 13 and a heating pipe 16. The expansion tank 13 is arranged between the plate heat exchanger 18 and the liquid outlet pipe 26. The liquid inlet of the expansion tank 13 is connected to the hot medium outlet of the plate heat exchanger 18, and the liquid outlet of the expansion tank 13 is connected to the liquid outlet pipe 26. The expansion tank 13 is used for pressure stabilization to ensure the stability of the pressure of the medium output in the liquid cooling loop.

[0036] The heating pipe 16 is arranged between the circulation pump 17 and the plate heat exchanger 18. The heating pipe 16 is used to heat the medium in the liquid cooling loop under special circumstances to prevent the temperature of the output medium from being too low. Specifically, the connection mode of the entire liquid cooling loop is as follows: the liquid inlet pipe 25 is communicated with the inlet end of the circulation pump 17, the outlet end of the circulation pump 17 is connected to the inlet end of the heating pipe 16, the outlet end of the heating pipe 16 is connected to the hot medium inlet of the plate heat exchanger 18, the hot medium outlet of the plate heat exchanger 18 is connected to the inlet of the expansion tank 13, and the outlet of the expansion tank 13 is connected to the liquid outlet pipe 26.

[0037] It further includes a liquid supplement pipe 27. The liquid supplement pipe 27 is arranged outside the cabinet body and is communicated with the liquid cooling loop, which is convenient for liquid supplement, liquid discharge and gas release.

[0038] Furthermore, the refrigeration loop further includes a drying filter 15. The drying filter 15 is arranged between the condenser 21 and the electronic expansion valve.

[0039] Even further, the refrigeration loop further includes a liquid storage tank 14. The liquid storage tank 14 is arranged between the condenser 21 and the electronic expansion valve. Specifically, the connection mode of the entire refrigeration loop is as follows: the outlet end of the compressor 20 is connected to the inlet end of the condenser 21, the outlet end of the condenser 21 is connected to the inlet end of the liquid storage tank 14, the outlet end of the liquid storage tank 14 is connected to the inlet end of the drying filter 15, the outlet end of the drying filter 15 is connected to the inlet end of the electronic expansion valve, and the outlet end of the electronic expansion valve is connected to the cooling medium inlet of the plate heat exchanger 18. The cooling medium outlet of the plate heat exchanger 18 is connected to the inlet end of the compressor 20, thus forming a refrigeration loop.

[0040] During use, the working mode of the liquid cooling loop is as follows: the cooling medium (ethylene glycol solution) enters through the liquid inlet pipe 25, enters the plate heat exchanger 18 through the liquid cooling pipeline assembly 11, completes heat exchange with the refrigeration loop, and is sent to the cooling plate or heat dissipation device through the liquid outlet pipe 26. The working mode of the refrigeration loop is as follows: the R134A or R410A refrigerant flows through the refrigeration pipeline assembly 12, flows through the compressor 20, the condenser 21, the liquid storage tank 14, the drying filter 15, the electronic expansion valve, and the plate heat exchanger 18, completes heat exchange with the outside air in the condenser 21, and completes heat exchange of the liquid circuit in the plate heat exchanger 18, thus completing the cooling work of the entire system.

[0041] The circulation pump 17, the plate heat exchanger 18, and the electric control box 19 are arranged side by side at the tail of the cabinet body. Moreover, the expansion water tank 13, the liquid storage tank 14, the drying filter 15, the heating pipe 16, the circulation pump 17, the plate heat exchanger 18, the electric control box 19, the compressor 20, the condenser 21, the electronic expansion valve, and the fan 22 are tightly arranged inside the cabinet body. The condenser 21 divides the inside of the cabinet body into two front and rear chambers. The liquid cooling circuit, the refrigeration circuit, and the electric control box 19 are all located in the rear chamber, and the fan 22 is located in the front chamber.

[0042] The technical effects achieved by this embodiment are as follows: The internal space of the cabinet body is fully utilized, improving the utilization rate of the internal space. The overall structure is compact, occupying less space. There is a fan 22 inside the cabinet body, which can ensure rapid heat dissipation.

[0043] Embodiment 2

[0044] As Figures 1 to 3 shown, another top-mounted variable-frequency energy storage liquid cooling device provided by this embodiment has a structure including all the contents of Embodiment 1. Only the different parts will be described below.

[0045] In this embodiment, the cabinet body includes a bottom plate 1, a left filter installation plate 2, a right filter installation plate 6, a front air duct plate 7, a rear filter installation plate 3, and a top plate. The left filter installation plate 2 and the right filter installation plate 6 are respectively arranged on the left and right sides of the bottom plate 1. The front air duct plate 7 and the rear filter installation plate 3 are respectively arranged on the front and rear sides of the bottom plate 1. The top plate is arranged on the top of the bottom plate 1. The front air duct plate 7 is bolted to the cabinet body, and the air outlet directly discharges to the outside of the cabinet body, which can effectively avoid air return.

[0046] The left filter installation plate 2 protrudes outside the cabinet body. Side filters 9 are respectively provided on the left filter installation plate 2 and the right filter installation plate 6, and a back filter 10 is provided on the rear filter installation plate 3.

[0047] In this embodiment, it should be noted that the filters on the left and right sides are of the pull-out type. Specifically, chutes are respectively provided on the upper and lower sides of the left filter installation plate 2 and the right filter installation plate 6. The two side filters 9 are respectively slidably connected to the left filter installation plate 2 and the right filter installation plate 6 through the corresponding chutes. After the side filter 9 is installed in place during the installation process, bolts are screwed into the corresponding fixing holes to fix it. When disassembling, just unscrew the bolts to pull out the side filter 9.

[0048] The back filter screen 10 adopts a lifting type. Specifically, a first baffle 23 and a second baffle 24 are respectively arranged on the upper and lower sides of the rear filter screen mounting plate 3. The first baffle 23 and the second baffle 24 respectively form a first sliding groove and a second sliding groove with the rear filter screen mounting plate 3. The height of the first sliding groove is greater than that of the second sliding groove. The top and bottom of the back filter screen 10 are respectively located in the first sliding groove and the second sliding groove. A 3-mm-thick heat-insulating cotton is pasted on the inner side of the back filter screen 10 to fix it by interference fit. When the back filter screen 10 needs to be taken out, first lift the back filter screen 10 upward so that the bottom edge is higher than the second baffle 24, and then pull it obliquely outward to take out the back filter screen 10.

[0049] Furthermore, it further includes a plurality of fixing feet 8, and the plurality of fixing feet 8 are respectively arranged on the side surface of the cabinet body;

[0050] The top plate includes a front top cover plate 5 and a rear top cover plate 4, and the front top cover plate 5 and the rear top cover plate 4 are sequentially arranged along the front and rear directions of the bottom plate 1.

[0051] The technical effects achieved by this embodiment are as follows: The external air duct of the fan is integrated with the cabinet body, saving the installation space, omitting the installation steps of the air duct, and providing a brand-new external shape layout; The design of the filter screen installation method is unique. The two side filter screens adopt a pull-out type, and the back filter screen adopts a lifting type, which is convenient for disassembly and assembly.

[0052] Although the present invention has been described in detail with general descriptions and specific embodiments above, on the basis of the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

[0053] The terms such as "upper", "lower", "left", "right", "middle" and the like cited in this specification are only for the convenience of clear narration, rather than used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in technical content, should also be regarded as the scope of implementation of the present invention.

Claims

1. A top-mounted variable-frequency energy storage liquid cooling device, characterized in that, It includes a cabinet body, a liquid cooling circuit, a refrigeration circuit, an electric control box (19) and a fan (22). The liquid cooling circuit, the refrigeration circuit, the electric control box (19) and the fan (22) are all arranged inside the cabinet body; The liquid cooling circuit includes a liquid cooling pipeline assembly (11), a circulation pump (17) and a plate heat exchanger (18). The liquid cooling pipeline assembly (11) is sequentially connected to the circulation pump (17) and the plate heat exchanger (18). An inlet pipe (25) and an outlet pipe (26) are arranged on one side of the cabinet body. The inlet pipe (25) is communicated with the inlet end of the circulation pump (17), and the outlet pipe (26) is connected to the heat medium outlet of the plate heat exchanger (18); The refrigeration circuit includes a refrigeration pipeline assembly (12), a compressor (20), a condenser (21) and an electronic expansion valve. The refrigeration pipeline assembly (12) is sequentially connected to the compressor (20), the condenser (21), the electronic expansion valve and the plate heat exchanger (18), and the cold medium outlet of the plate heat exchanger (18) is connected to the inlet of the compressor (20).

2. The top-mounted variable-frequency energy storage liquid cooling device according to claim 1, characterized in that, The liquid cooling circuit further includes an expansion water tank (13). The expansion water tank (13) is arranged between the plate heat exchanger (18) and the outlet pipe (26). The inlet of the expansion water tank (13) is connected to the heat medium outlet of the plate heat exchanger (18), and the outlet of the expansion water tank (13) is connected to the outlet pipe (26).

3. The overhead frequency conversion energy storage liquid cooling device according to claim 2, characterized in that, The liquid cooling circuit further includes a heating pipe (16). The heating pipe (16) is arranged between the circulation pump (17) and the plate heat exchanger (18).

4. A top-mounted variable-frequency energy storage liquid cooling device according to claim 1, wherein The refrigeration circuit further includes a drying filter (15). The drying filter (15) is arranged between the condenser (21) and the electronic expansion valve.

5. A top-mounted variable-frequency energy storage liquid cooling device according to claim 4, characterized in that The refrigeration circuit further includes a liquid storage tank (14). The liquid storage tank (14) is arranged between the condenser (21) and the electronic expansion valve.

6. The overhead variable-frequency energy storage liquid cooling device according to claim 1, wherein It further includes a liquid replenishing pipe (27). The liquid replenishing pipe (27) is arranged outside the cabinet body, and the liquid replenishing pipe (27) is communicated with the liquid cooling circuit.

7. The overhead variable-frequency energy storage liquid cooling device according to claim 1, characterized in that, The cabinet body includes a bottom plate (1), a left filter screen mounting plate (2), a right filter screen mounting plate (6), a front air duct plate (7), a rear filter screen mounting plate (3) and a top plate. The left filter screen mounting plate (2) and the right filter screen mounting plate (6) are respectively arranged on the left and right sides of the bottom plate (1). The front air duct plate (7) and the rear filter screen mounting plate (3) are respectively arranged on the front and rear sides of the bottom plate (1). The top plate is arranged on the top of the bottom plate (1); Lateral filter screens (9) are respectively arranged on the left filter screen mounting plate (2) and the right filter screen mounting plate (6), and a back filter screen (10) is arranged on the rear filter screen mounting plate (3).

8. A top-mounted variable-frequency energy storage liquid cooling device according to claim 7, characterized in that Chutes are respectively arranged on the upper and lower sides of the left filter screen mounting plate (2) and the right filter screen mounting plate (6). The two lateral filter screens (9) are respectively slidably connected to the left filter screen mounting plate (2) and the right filter screen mounting plate (6) through the corresponding chutes.

9. The overhead variable-frequency energy storage liquid cooling device according to claim 7, characterized in that, The upper and lower sides of the rear filter mounting plate (3) are respectively provided with a first baffle (23) and a second baffle (24). The first baffle (23) and the second baffle (24) respectively form a first chute and a second chute with the rear filter mounting plate (3). The height of the first chute is greater than that of the second chute. The top and bottom of the back filter (10) are respectively located in the first chute and the second chute.

10. A top-mounted variable-frequency energy storage liquid cooling device according to claim 7, characterized in that, It further includes a plurality of fixing feet (8), and the plurality of fixing feet (8) are respectively arranged on the side surface of the cabinet body; The top plate includes a front top cover plate (5) and a rear top cover plate (4), and the front top cover plate (5) and the rear top cover plate (4) are sequentially arranged along the front-rear direction of the bottom plate (1).

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