Direct-cooling energy storage cabinet

Abstract

The utility model discloses a direct-cooling energy storage cabinet, which optimizes the layout of pipelines in the cabinet, and is compact in structure and convenient to disassemble, assemble and maintain. The direct-cooling energy storage cabinet comprises a cabinet body, a direct-cooling module and a plurality of direct-cooling plates. The compressor, the heat exchanger, the heat regenerator and the direct cooling plate are sequentially connected through pipelines to form a refrigerant circulation loop. The pipeline comprises a built-in pipeline and a built-out pipeline, and the built-out pipeline comprises two main pipelines and a plurality of parallel branches; the left side and the right side of an opening in the front side of the cabinet body are respectively provided with a cylindrical pipe passing support, each pipe passing support is provided with a pipe passing channel in the height direction of the cabinet body, the two main pipelines are arranged in the two pipe passing channels in an extending mode respectively, and pipe passing holes for the parallel branches to penetrate through are formed in the positions, corresponding to the direct cooling plates, of the pipe passing supports respectively. According to the utility model, the pipe routing bracket is arranged in the cabinet body, so that the main pipeline of the external pipeline and the connecting section of the main pipeline and the parallel branch are integrated in the pipe routing channel of the pipe routing bracket, the pipeline integrated design is realized, the exposed pipeline structure is simplified, and the disassembly and assembly convenience is improved.

Description

Technical Field

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

[0002] Energy storage cabinets generate a lot of heat during use. If the heat is not dissipated in time, the temperature inside the cabinet will gradually rise. When the temperature rises to a certain level, it will affect the use of the battery cabinet (such as charging and discharging performance), and there is even a risk of explosion. At the same time, when the ambient temperature is too low, such as in winter, the low temperature environment will also cause the battery to lose power seriously, cannot charge and discharge normally, and shorten its life. Therefore, energy storage cabinets are usually equipped with air conditioning products to control the battery temperature within an appropriate range.

[0003] There are two common types of air conditioning products for energy storage cabinets on the market: air cooling and liquid cooling. Liquid cooling has gradually become the main means of energy storage temperature control. Most of the current liquid cooling temperature control products are large in size and heavy in weight, making them difficult to repair, replace and move. The large size leads to high costs and large floor space, which squeezes the space for the batteries in the energy storage cabinet. At the same time, the liquid cooling energy storage temperature control products on the market have high energy consumption and low energy efficiency. While dissipating heat for the battery, they also consume a lot of electricity, which is not in line with the current development trend of low-carbon energy conservation. In addition, energy storage liquid cooling technology also has problems such as slow heating and cooling rates, poor temperature uniformity of the battery cells, low energy conversion efficiency and high system costs.

[0004] In order to solve the above problems, improve the temperature adjustment rate of energy storage cabinets, the temperature uniformity of battery cells and the energy conversion efficiency, and reduce system costs, there are more and more studies on the use of refrigerant direct cooling systems for temperature control of energy storage cabinets, and direct cooling energy storage cabinets have emerged.

[0005] However, due to the high installation density and large number of batteries in current energy storage cabinets, the refrigerant pipeline layout is inevitably complicated and not conducive to disassembly or maintenance.

[0006] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In view of the problems pointed out in the background technology, the utility model proposes a direct-cooling energy storage cabinet, which optimizes the pipeline layout in the cabinet to make the structure compact and convenient for disassembly, assembly and maintenance.

[0008] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0009] In some embodiments of the present application, a direct cooling energy storage cabinet is provided, comprising:

[0010] A cabinet body, which is a rectangular cabinet body with a front opening, wherein the interior space of the cabinet body includes an air conditioning compartment and a battery compartment, wherein the battery compartment is used to accommodate at least a plurality of batteries;

[0011] A direct cooling module is arranged in the air conditioning compartment, comprising a shell and a compressor, a heat exchanger, a heat regenerator, an electric control box and a heat dissipation fan located in the shell, wherein a return air port is arranged on the front side plate of the shell, and an air outlet is arranged on the rear side plate;

[0012] A plurality of direct cooling plates, which are arranged in the battery compartment and correspond one to one to the plurality of batteries;

[0013] The compressor, the heat exchanger, the regenerator and the direct cooling plate are connected in sequence through pipelines to form a refrigerant circulation loop; the pipeline includes an internal pipeline located in the shell and an external pipeline located outside the shell and in the cabinet, the external pipeline includes two main pipelines and a plurality of parallel branches connected between the two main pipelines, one end of the two main pipelines is respectively connected to the two ports of the regenerator through a three-way stop valve, one end of the parallel branch is connected to one of the main pipelines through a two-way stop valve, and the other end is connected to the other main pipeline through a two-way stop valve, and each of the direct cooling plates is correspondingly connected to each of the parallel branches;

[0014] A cylindrical pipe bracket is respectively provided on the left and right sides of the front opening of the cabinet, each of the pipe brackets is arranged along the height direction of the cabinet and has a pipe channel extending along the height direction of the cabinet, the two main pipes are respectively extended in the two pipe channels, and the pipe brackets are respectively provided with pipe holes for the parallel branches to pass through at corresponding positions of each direct cooling plate.

[0015] In some embodiments of the present application, the pipe running bracket includes a bracket body and a cover plate, the bracket body is fixed in the cabinet, the front side of the bracket body is open, the cover plate is located on the front side of the bracket body and forms the pipe running channel with the bracket body, and the cover plate is detachably connected to the bracket body.

[0016] In some embodiments of the present application, the cabinet includes an outer shell and an internal cabinet frame with a front opening, and the bracket bodies of the two pipe routing brackets are respectively fixed on the left and right sides of the front opening of the internal cabinet frame.

[0017] In some embodiments of the present application, a plurality of direct cooling plates are arranged at intervals in the battery compartment along the height direction of the cabinet, and the batteries are correspondingly arranged above the direct cooling plates, and the direct cooling plates are in contact with the bottom surfaces of the batteries;

[0018] The air conditioning compartment is located above the battery compartment and on the top of the cabinet;

[0019] The top end of the pipe support is open, and the bottom end is closed.

[0020] In some embodiments of the present application, the cross-section of the pipe bracket is a rectangular ring, the cross-section of the bracket body is U-shaped, the cross-section of the cover plate is U-shaped, the two side plates of the cover plate are attached to the outer surfaces of the two side plates of the bracket body, and an avoidance hole is opened on the side plate of the cover plate corresponding to the two-way stop valve.

[0021] In some embodiments of the present application, the three-way stop valve is arranged on the front side plate of the shell, and the two-way stop valve is arranged on the opposite sides of the two pipe routing brackets.

[0022] In some embodiments of the present application, a liquid separation pipeline is connected to the connection point between the main line and each parallel branch, one end of the liquid separation pipeline is connected to the main line, and the other end is connected to the two-way stop valve. An electronic expansion valve is provided on the liquid separation pipeline, and the liquid separation pipeline and the electronic expansion valve are both located in the pipe channel.

[0023] In some embodiments of the present application, the liquid distribution pipeline is bent and extended so that the axis of the electronic expansion valve is parallel to the axis of the main pipeline.

[0024] In some embodiments of the present application, the cross-section of the pipe channel is rectangular, the cross-section of the liquid distribution pipeline is located on a diagonal line of the rectangular cross-section of the pipe channel, the cross-section of the main pipeline is located on another diagonal line of the rectangular cross-section of the pipe channel, and the cross-section of the electronic expansion valve is located at the intersection of the two diagonals of the rectangular cross-section of the pipe channel.

[0025] In some embodiments of the present application, a direct cooling energy storage cabinet includes:

[0026] A cabinet body, which is a rectangular cabinet body with a front opening, wherein the interior space of the cabinet body includes an air conditioning compartment and a battery compartment, wherein the battery compartment is used to accommodate a plurality of batteries;

[0027] A direct cooling module, which is arranged in the air conditioning compartment and is used to adjust the temperature of the battery; the direct cooling module includes a shell and a compressor, a heat exchanger, a heat regenerator, an electric control box and a heat dissipation fan located in the shell, and the front side plate of the shell is provided with a return air port, and the rear side plate is provided with an air outlet;

[0028] A plurality of direct cooling plates, which are arranged in the battery compartment and correspond one to one to the plurality of batteries;

[0029] The compressor, heat exchanger, regenerator and direct cooling plate are connected in sequence through pipelines to form a refrigerant circulation loop; the pipelines include internal pipelines located in the shell and external pipelines located outside the shell and in the cabinet;

[0030] A cylindrical pipe running bracket is respectively provided on the left and right sides of the front opening of the cabinet, each of which is arranged along the height direction of the cabinet and has a pipe running channel extending along the height direction of the cabinet, and the external pipeline passes through the pipe running channel to realize pipe running.

[0031] Compared with the prior art, the advantages and positive effects of the utility model are:

[0032] 1. The direct cooling energy storage cabinet of the utility model divides the internal space of the cabinet into zones to reasonably install and arrange the direct cooling modules, direct cooling plates and batteries, so that the internal structure of the energy storage cabinet is compact, which is conducive to increasing the battery capacity;

[0033] 2. Direct cooling module is used to directly use refrigerant to exchange heat with the battery through the direct cooling plate to control the battery temperature, effectively improving the temperature control efficiency. The battery temperature control efficiency is improved, and the structure is compact, which is convenient for disassembly and maintenance;

[0034] 3. By arranging a pipe bracket in the cabinet, the main line of the external pipeline of the refrigerant circulation loop and the connecting section between the main line and the parallel branch are integrated in the pipe channel of the pipe bracket to form a module with the pipe bracket, thereby realizing the integrated pipe design, simplifying the exposed pipe structure, and improving the convenience of installation and disassembly and maintenance.

[0035] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 This is a schematic diagram of the structure of a direct-cooling energy storage cabinet from a front side perspective according to an embodiment;

[0038] Figure 2 This is a schematic diagram of the structure of a direct cooling energy storage cabinet according to an embodiment with the cabinet door omitted from the rear front side perspective;

[0039] Figure 3 This is a schematic diagram of the structure of a direct cooling energy storage cabinet according to an embodiment, omitting the cabinet door, the cabinet internal frame and the battery PACK from the rear front side;

[0040] Figure 4 It is a schematic diagram of the connection structure of the pipe support, the external pipeline and the direct cooling plate of the direct cooling energy storage cabinet according to an embodiment;

[0041] Figure 5 for Figure 4 A magnified view of the D portion;

[0042] Figure 6 is a schematic structural diagram of a pipe routing support according to an embodiment;

[0043] Figure 7 is a schematic diagram of the main structure of the pipe routing support according to the embodiment;

[0044] Figure 8 is a schematic diagram of the main circuit structure of a direct cooling energy storage cabinet according to an embodiment;

[0045] Fig. 9 for Figure 8 Enlarged view of part C;

[0046] Fig.10 It is a schematic diagram of the cross-sectional structure of the main pipeline in the pipeline channel;

[0047] Fig.11 This is a schematic diagram of the structure of a direct cooling module of a direct cooling energy storage cabinet from a front side perspective according to an embodiment;

[0048] Fig.12 It is a schematic diagram of the structure of a direct cooling module of a direct cooling energy storage cabinet from a rear side perspective according to an embodiment;

[0049] Fig.13 This is a structural schematic diagram of a direct cooling module of a direct cooling energy storage cabinet according to an embodiment, with the front side plate and the top plate omitted;

[0050] Fig.14 This is a structural schematic diagram of another perspective of the direct cooling module of the direct cooling energy storage cabinet according to the embodiment after omitting the front side plate and the top plate;

[0051] Fig.15 This is a structural schematic diagram of a direct cooling module of a direct cooling energy storage cabinet according to an embodiment after omitting the front side plate and the top plate from another perspective;

[0052] Fig.16 This is a schematic structural diagram of a direct cooling module of a direct cooling energy storage cabinet according to an embodiment after omitting a portion of a front side plate, a top plate and a left side plate;

[0053] Fig.17 This is a schematic structural diagram of a direct cooling module of a direct cooling energy storage cabinet according to an embodiment, with the front side plate, a portion of the top plate and the left side plate and the electric control box cover omitted;

[0054] Fig.18 This is a schematic structural diagram of a direct cooling module of a direct cooling energy storage cabinet according to an embodiment after omitting the front side plate, the top plate and the rear side plate;

[0055] Fig.19It is a schematic structural diagram of a direct cooling plate connector of a direct cooling energy storage cabinet according to an embodiment from a top perspective;

[0056] Fig. 20 It is a structural schematic diagram of a direct cooling plate connector of a direct cooling energy storage cabinet according to an embodiment from a bottom perspective;

[0057] Fig.21 is an exploded view of a direct cooling plate of a direct cooling energy storage cabinet according to an embodiment;

[0058] Fig. 22 is a direct cooling system diagram of a direct cooling energy storage cabinet according to an embodiment.

[0059] Reference numerals:

[0060] 1. Direct cooling energy storage cabinet; 100, cabinet; 110, air conditioning compartment; 120, battery compartment; 130, cabinet door; 140, shell; 150, internal cabinet frame; 200, horizontal direct cooling module; 210, shell; 211, first side panel; 212, second side panel; 213, return air outlet; 214, air outlet; 220, compressor; 230, heat exchanger; 240, regenerator; 250, electric control box; 251, electric control box cover; 252, radiator; 260, cooling fan; 270, first electronic expansion valve; 280, second electronic expansion valve; 290, three-way stop valve; 2100, air avoidance; 2110, fan bracket; 2111, main installation plate; 2112, U-shaped bracket; 2120, installation Angle code; 2130, pull handle; 2140, internal pipeline; 2150, four-way valve; 2160, oil separator; 2170, filter; 2180, oil return capillary; 2190, liquid reservoir; 300, direct cooling plate; 310, refrigerant flow channel; 311, refrigerant inlet; 312, refrigerant outlet; 320, upper cover; 330, bottom plate; 400, insulation layer; 500, support plate; 600, partition plate; 700, main pipeline; 800, parallel branch; 900, two-way stop valve; 1000, connector; 1001, inlet channel; 1002, outlet channel; 1100, pipe bracket; 1110, pipe channel; 1120, pipe hole; 1200, cover plate; 1300, liquid separation pipeline;

[0061] 2. Battery PACK. DETAILED DESCRIPTION

[0062] 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 only 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.

[0063] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0064] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0065] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0067] Reference Figure 1 and Figure 5 , Figures 11 to 18 In some embodiments of the present application, a direct cooling energy storage cabinet 1 is proposed, including a cabinet body 100 , a direct cooling module 200 and a direct cooling plate 300 .

[0068] The cabinet 100 is generally a rectangular cabinet, and its internal space includes an air conditioning compartment 110 and a battery compartment 120, and the air conditioning compartment 110 and the battery compartment 120 are independent of each other. The cabinet 100 has a front opening and is provided with a cabinet door 130 to open and close the energy storage cabinet.

[0069] The battery compartment 120 is at least used to accommodate batteries, specifically energy storage batteries. A battery PACK2 formed by a battery cluster package is arranged in the battery compartment 120 , and a plurality of battery PACK2 are arranged in the battery compartment 120 .

[0070] The air conditioning compartment 110 is used to accommodate the direct cooling module 200. The direct cooling module 200 is used to adjust the temperature of the energy storage cabinet and perform constant temperature management on the energy storage cabinet. It is mainly used to adjust the temperature of the battery in the battery compartment 120 so that the battery can work within an ideal temperature range to avoid the battery temperature being too high or too low.

[0071] When the direct cooling module 200 performs cooling, the battery compartment 120 is cooled down. When the direct cooling module 200 performs heating, the battery compartment 120 is heated up.

[0072] The direct cooling module 200 has an outer contour in the shape of a flat rectangular parallelepiped and is placed in a horizontal position in the air-conditioning compartment 110. It at least includes a shell 210 and a compressor 220, a heat exchanger 230, a heat regenerator 240, an electrical control box 250 and a heat dissipation fan 260 located in the shell 210. The compressor 220, the heat exchanger 230, the heat regenerator 240, the electrical control box 250 and the heat dissipation fan 260 are all arranged on the bottom plate of the shell 210. A return air port 213 is provided on the front side panel of the shell 210, and an air outlet 214 is provided on the rear side panel to realize front air return and rear air outlet.

[0073] The air conditioning compartment 110 is connected with the corresponding positions of the return air inlet 213 and the air outlet 214, and the corresponding positions of the cabinet 100 are connected with the return air inlet 213 and the air outlet 214 so that the direct cooling module 200 can return air and discharge air, and waterproof shutters and insect-proof nets are installed at the connected parts.

[0074] The return air inlet 213, the air outlet 214, and the heat exchanger 230 all extend left and right. The electric control box 250 and the compressor 220 are respectively located at the left and right ends of the return air inlet 213. The heat exchanger 230 and the heat dissipation fan 260 are close to the air outlet 214. The heat dissipation fan 260 is located between the heat exchanger 230 and the air outlet 214 to discharge the heat of the heat exchanger 230 through the air outlet 214 during cooling.

[0075] The direct cooling plate 300 is disposed in the battery compartment 120 for heat exchange with the battery. A refrigerant flow channel 310 is formed inside the direct cooling plate 300. The refrigerant in the refrigerant circulation loop flows through the direct cooling plate 300 to exchange heat with the battery.

[0076] The compressor 220, the heat exchanger 230, the regenerator 240 and the direct cooling plate 300 are connected in sequence through pipelines to form a refrigerant circulation loop. Throttling devices are provided at the inlet and outlet of the direct cooling plate 300, which are respectively called the first electronic expansion valve 270 and the second electronic expansion valve 280.

[0077] During refrigeration, the refrigerant is compressed into high-temperature and high-pressure gas by the compressor 220, enters the heat exchanger 230, and condenses and dissipates heat through the heat dissipation fan 260 to become a medium-temperature and high-pressure liquid refrigerant. It is further supercooled by the regenerator 240, and the first electronic expansion valve 270 is fully opened. It exchanges heat through the direct cooling plate 300 to cool the battery. Then it is throttled to a low-temperature and low-pressure gas-liquid two-phase refrigerant through the second electronic expansion valve 280, superheated to a gaseous refrigerant through the regenerator 240, and returns to the compressor 220 to complete the refrigeration cycle.

[0078] The throttling device expands the high-temperature and high-pressure liquid refrigerant condensed in the heat exchanger 230 into a low-pressure liquid refrigerant. The regenerator 240 (functioning as an evaporator) evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 220.

[0079] The direct cooling energy storage cabinet 1 in the embodiment of the present application divides the internal space of the cabinet 100 into zones to reasonably install and arrange the direct cooling module, the direct cooling plate 300, and the battery, so that the internal structure of the energy storage cabinet is compact, which is beneficial to increasing the battery capacity; the direct cooling module is adopted, and the refrigerant is directly used to control the battery temperature through the direct cooling plate 300 through heat exchange with the battery, thereby effectively improving the temperature control efficiency. The battery temperature is controlled to improve the battery temperature control efficiency, and the structure is compact and convenient for disassembly and maintenance; the direct cooling module is a horizontal structure with a stable center of gravity, which is convenient for installation on the top of the energy storage cabinet and does not occupy the battery installation space. The direct cooling module is an integral module, which is convenient for disassembly and maintenance of the whole machine; the direct cooling module 200 adopts front return air and rear outlet air, and the return air port 213, the air outlet 214, and the heat exchanger 230 all extend left and right. The electric control box 250 and the compressor 220 are respectively located at the left and right ends of the return air port 213, and the heat exchanger 230 and the heat dissipation fan 260 are close to the air outlet 214. The heat dissipation fan 260 is located between the heat exchanger 230 and the air outlet 214, which improves the return air capacity and ensures the stability of the center of gravity of the whole machine.

[0080] Since there are usually multiple battery PACK2 in the direct-cooling energy storage cabinet 1, in order to improve the temperature control efficiency and the temperature uniformity of each battery PACK2, in some embodiments of the present application, there are multiple direct cooling plates 300, which are arranged in a one-to-one correspondence with the multiple battery PACK2; the multiple direct cooling plates 300 are connected in parallel between the two channels of the regenerator 240, and the first electronic expansion valve 270 and the second electronic expansion valve 280 are respectively arranged at the inlet and outlet of each direct cooling plate 300.

[0081] During cooling, the refrigerant is compressed into a high-temperature and high-pressure gas by the compressor 220, enters the heat exchanger 230, and is condensed and dissipated by the cooling fan 260 to become a medium-temperature and high-pressure liquid refrigerant, and enters the first channel of the regenerator 240. It is further supercooled by the regenerator 240, and then flows into the parallel branch 800 where each direct cooling plate 300 is located. Each first electronic expansion valve 270 is fully opened, and heat is exchanged through the direct cooling plate 300 to cool the corresponding batteries.

[0082] In some embodiments of the present application, a plurality of direct cooling plates 300 are spaced apart in the battery compartment 120 along the height direction of the cabinet 100 , and the battery PACK2 is correspondingly arranged above the direct cooling plate 300 , and the direct cooling plate 300 contacts the bottom surface of the battery PACK2 to further improve the temperature control efficiency.

[0083] In some embodiments of the present application, a thermal insulation layer 400 is designed at the bottom of the direct cooling plate 300 to avoid condensation and cooling loss.

[0084] In some embodiments of the present application, the air conditioning compartment 110 is located above the battery compartment 120 and at the top of the cabinet 100. Then each battery PACK2 is located below the direct cooling module 200, which is convenient for taking and placing the battery PACK2.

[0085] In some embodiments of the present application, a plurality of horizontally arranged support plates 500 are fixedly arranged in the battery compartment 120 at intervals along the height direction of the cabinet 100, and the direct cooling plate 300 is supported on the support plates 500. The heat preservation layer 400 is sandwiched between the direct cooling plate 300 and the support plates 500.

[0086] To further facilitate disassembly, assembly and maintenance, the pipelines connecting the compressor 220, the heat exchanger 230, the regenerator 240 and the direct cooling plate 300 include an internal pipeline 2140 located in the shell 210 of the direct cooling module 200 and an external pipeline located outside the shell 210 and in the cabinet 100; the external pipeline is located outside the direct cooling module 200 and located in the internal space of the energy storage cabinet 100, and the external pipeline includes two main pipelines 700 and a plurality of parallel branches 800 connected between the two main pipelines 700, one end of the two main pipelines 700 is connected to the two ports of the internal pipeline 2140 through a three-way stop valve 290 respectively, the two main pipelines 700 are connected to the two ends of each parallel branch 800 through a two-way stop valve 900, and the parallel branch 800 is connected to the direct cooling plate 300 through a connector 1000.

[0087] The pipeline of the refrigerant circulation loop is divided into two parts: an internal pipeline 2140 and an external pipeline. The internal pipeline 2140 is integrated in the direct cooling module 200 and can be disassembled and assembled together with the direct cooling module 200. The main pipeline 700 and each parallel branch 800 of the external pipeline can be disassembled and assembled separately, thereby facilitating the disassembly and maintenance of each component.

[0088] In some embodiments of the present application, the three-way stop valve 290 is arranged on the front side plate of the shell 210, that is, it is integrated with the direct cooling module 200 and can be disassembled and assembled together with the direct cooling module 200. The two-way stop valve 900 is arranged on both sides of the cabinet opening of the cabinet body 100, and the connecting piece 1000 is arranged on the direct cooling plate 300 and close to the cabinet opening of the cabinet body 100. Therefore, when disassembling the main line 700 and each parallel branch 800, there is no need to remove the two-way stop valve 900 and the connecting piece 1000, thereby ensuring the sealing of the joint connection.

[0089] The three-way stop valve 290 and the two-way stop valve 900 use two-stage automotive-grade seals to improve sealing performance.

[0090] Specifically, refer to Fig. 22 , which is a schematic diagram of a direct cooling system in an embodiment of the present application. The refrigeration cycle loop also includes a four-way valve 2150, etc. The internal pipeline 2140 is mainly the connecting pipelines between the compressor 220, the four-way valve 2150, the heat exchanger 230 and the regenerator 240, wherein the two connecting pipelines connected to the regenerator 240 are equivalent to the two end sections of the internal pipeline 2140, one of the two connecting pipelines connects the heat exchanger 230 and the first end a of the first channel of the regenerator 240 (which includes two independent first channels and second channels), and the other connecting pipeline connects the four-way valve and the first end c of the second channel of the regenerator 240, and two three-way stop valves 290 are respectively connected to the second end b of the first channel of the regenerator 240 and the second end of the second channel, wherein one of the three-way stop valves 290 is connected to one end of one of the main pipelines 700, and the other three-way stop valve 290 is connected to one end of the other main pipeline 700.

[0091] like Fig. 22 As shown, in some embodiments of the present application, the refrigeration mode: the refrigerant is compressed into a high-temperature and high-pressure gas by the compressor 220, and returns the oil through the oil separator 2160, the filter 2170, and the oil return capillary 2180, and passes through the four-way valve 2150 to the heat exchanger 230 (acting as a condenser at this time), and condenses and dissipates heat through the heat dissipation fan 260 to become a medium-temperature and high-pressure liquid refrigerant, and enters the first channel of the regenerator 240, and is further supercooled through the regenerator 240, and enters each parallel branch. The first electronic expansion valve 270 in front of the direct cooling plate 300 is fully opened, and the battery PACK2 is cooled by heat exchange through the direct cooling plate 300; then the second electronic expansion valve 280 after the direct cooling plate 300 is throttled into a low-temperature and low-pressure gas-liquid two-phase refrigerant, enters the second channel of the regenerator 240, and is superheated to a gaseous refrigerant through the regenerator 240, and returns to the compressor 220 through the liquid storage tank 2190 to complete the refrigeration cycle.

[0092] Heat pump heating mode: the refrigerant is compressed into high-temperature and high-pressure gas by the compressor 220, and returns oil through the oil separator 2160, the filter 2170, and the oil return capillary 2180; the four-way valve 2150 is powered on and reversed, and the high-temperature and high-pressure refrigerant enters the second channel of the regenerator 240, passes through the regenerator 240, and reaches the second electronic expansion valve 280. The second electronic expansion valve 280 is fully opened, and the high-temperature refrigerant heats the battery PACK2 at the direct cooling plate 300, and then reaches the first electronic expansion valve 270 to be throttled into a low-temperature and low-pressure gas-liquid two-phase refrigerant, enters the first channel of the regenerator 240, passes through the regenerator 240, evaporates in the heat exchanger 230, and returns to the compressor 220 through the liquid storage tank 2190 to complete the heating cycle.

[0093] Reference Figures 6 to 10 , while combining Figure 2 and Figure 5 In some embodiments of the present application, a cylindrical pipe bracket is provided on the left and right sides of the front opening of the cabinet 100, respectively. Each pipe bracket is arranged along the height direction of the cabinet 100 and has a pipe channel 1110 extending along the height direction of the cabinet, so there are two left and right pipe channels 1110 in total, and the two main pipes 700 are respectively extended in the two pipe channels 1110, and pipe holes 1120 for each parallel branch 800 to pass through are respectively provided on the pipe bracket corresponding to each direct cooling plate 300.

[0094] The main pipe 700 can be integrated with the pipe bracket, and the pipe bracket can be fixed in the cabinet 100 to achieve installation in the cabinet, thereby improving the convenience of installation and disassembly and maintenance.

[0095] In some embodiments of the present application, the pipe bracket includes a bracket body 1100 and a cover plate 1200. The bracket body 1100 is fixed in the cabinet, and the front side of the bracket body 1100 is open. The cover plate 1200 is located on the front side of the bracket body 1100 and forms the pipe channel 1110 with the bracket body 1100. The cover plate 1200 is detachably connected to the bracket body 1100.

[0096] The main pipe 700 can be hidden in the pipe support 1100 to the greatest extent, simplifying the exposed pipe structure. By removing the cover plate 1200, the main pipe 700 can be easily inspected or maintained.

[0097] In some embodiments of the present application, the cabinet 100 of the direct cooling energy storage cabinet 1 includes an outer shell 140 and an internal cabinet frame 150 with a front opening, the front opening of the internal cabinet frame 150 is the front opening of the cabinet 100, and the outer shell 140 is provided with a door body corresponding to the front opening of the internal cabinet frame 150, that is, a cabinet door 130. Two pipe running brackets 1100 are correspondingly arranged on the left and right sides of the front opening of the internal cabinet frame 150 (specifically, on the front side surfaces of the left and right side panels of the internal cabinet frame 150).

[0098] In some embodiments of the present application, the cross-section of the pipe bracket is a rectangular ring, the cross-section of the bracket body 1100 is U-shaped, the cross-section of the cover plate 1200 is U-shaped, the cross-section of the pipe channel 1110 is U-shaped and opens forward, and the two side plates of the cover plate 1200 are attached to the outer surfaces of the two side plates of the pipe bracket 1100. An avoidance hole is opened on the side plate of the cover plate 1200 at a position corresponding to the two-way stop valve 900, which is conducive to reducing the size of the pipe bracket 1100 and reducing space occupancy.

[0099] In some embodiments of the present application, a plurality of direct cooling plates 300 are arranged in the battery compartment 120 along the height direction of the cabinet 100 at intervals to reduce the lateral and longitudinal dimensions and occupy only the height space as much as possible, which is conducive to reducing the floor space. The battery PACK2 is correspondingly arranged above the direct cooling plate 300, and the direct cooling plate 300 is in contact with the bottom surface of the battery PACK2; at this time, the air conditioning compartment 110 is located above the battery compartment 120 and at the top of the cabinet 100, and the top of the pipe bracket is open so that the top of the main line 700 extends out to connect the three-way stop valve 290 on the direct cooling module 200. The bottom end of the pipe bracket can be closed to facilitate supporting the main line 700.

[0100] In some embodiments of the present application, a liquid separation pipeline 1300 is connected to the connection portion of the main line 700 with each parallel branch 800, one end of the liquid separation pipeline 1300 is connected to the main line 700, and the other end is connected to the above-mentioned two-way stop valve 900, and an electronic expansion valve is provided on the liquid separation pipeline 1300, wherein the electronic expansion valve on the liquid separation pipeline 1300 connected to one main line 700 is the aforementioned first electronic expansion valve 270, and the liquid separation pipeline 1300 and the first electronic expansion valve 270 thereon are located in the pipe channel 1110 where the main line 700 connected thereto is located; the electronic expansion valve on the liquid separation pipeline 1300 connected to another main line 700 is the aforementioned second electronic expansion valve 280, and the liquid separation pipeline 1300 and the second electronic expansion valve 280 thereon are located in the pipe channel 1110 where the main line 700 connected thereto is located.

[0101] On the one hand, by setting up the liquid separation pipeline 1300 and reasonably setting the extension direction of the liquid separation pipeline 1300, the connection with the corresponding parallel branch 800 can be facilitated. On the other hand, the liquid separation pipeline 1300 and the electronic expansion valve thereon are also arranged in the corresponding pipe channel 1110, which also meets the requirement of simplifying the exposed pipe structure.

[0102] Correspondingly, the two-way stop valve 900 can be arranged on the opposite sides of the two pipe brackets, specifically on the opposite sides of the two bracket main bodies 1100, that is, the two-way stop valve 900 on the left is arranged on the right side of the left bracket main body 1100, and the two-way stop valve 900 on the right is arranged on the left side of the right bracket main body 1100, so that the pipe bracket, the main line 700, the liquid separation line 1300, the electronic expansion valve and the two-way stop valve 900 are integrated into one, which further facilitates disassembly and maintenance.

[0103] like Figure 8 and Fig. 9 As shown, the liquid distribution pipeline 1300 is bent and extended so that the axis of the electronic expansion valve is parallel to the axis of the main pipeline 700, so that the overall structure formed by the main pipeline 700, the liquid distribution pipeline 1300 and the electronic expansion valve is compact and occupies little space, which is conducive to reducing the size of the pipe bracket 1100.

[0104] In some embodiments of the present application, the cross-section of the pipe channel 1110 is rectangular, the cross-section of the liquid separation pipeline 1300 is located on a diagonal line of the rectangular cross-section of the pipe channel 1110, the cross-section of the main pipeline 700 is located on another diagonal line of the rectangular cross-section of the pipe channel 1110, and the cross-section of the electronic expansion valve (the first electronic expansion valve 270 or the second electronic expansion valve 280) is located at the intersection of the two diagonals of the rectangular cross-section of the pipe channel 1110, so that the pipe arrangement in the pipe bracket is compact and the space occupancy is reduced.

[0105] like Fig.13 and Fig.14 As shown, for the direct cooling module 200, the heat regenerator 240 is located on the side where the compressor 220 is located to facilitate pipeline connection; there is a gap 2100 between the electrical control box 250 and the compressor 220, and the gap 2100 is directly opposite to the heat exchanger 230, that is, there is a large distance between the electrical control box 250 and the compressor 220, and a gap design is left to ensure smooth return air flow and improve the return air capacity, and the electrical control box 250 and the compressor 220 are respectively located at the two ends of the return air outlet 213, which is beneficial to ensure the stability of the center of gravity of the whole machine.

[0106] Reference Figure 17 to Figure 18 In some embodiments of the present application, two heat dissipation fans 260 are provided on the left and right to increase the air volume and thus improve the heat dissipation effect.

[0107] Two cooling fans 260 are installed on the same fan bracket 2110. The fan bracket 2110 includes a main mounting plate 2111 extending left and right and two left and right U-shaped brackets 2112 arranged on the rear side of the main mounting plate 2111. The periphery of the main mounting plate 2111 is fixedly connected to the corresponding side plate of the shell 210. The U-shaped bracket 2112 is a frame structure, including two left and right long strip side plates and a long strip bottom plate connecting the two long strip side plates. The open end of the U-shaped bracket 2112 is fixedly connected to the main mounting plate 2111. The two U-shaped brackets 2112 are tilted. The two long strip side plates of each U-shaped bracket 2112 are not at the same height position, one is on the top and the other is on the bottom. The long strip bottom plate is tilted to connect the two long strip side plates, so that the entire U-shaped bracket 2112 is installed in a tilted manner. Fig.18 shown.

[0108] The two U-shaped brackets 2112 are inclined in the same direction, which can reduce the space occupied in the left and right directions and make the structure compact. The air suction end of the heat dissipation fan 260 is fixedly connected to the main mounting plate 2111, and the air outlet end is fixedly connected to the bottom plate of the U-shaped bracket 2112. The main mounting plate 2111 is provided with a through portion corresponding to the air suction ends of the two heat dissipation fans 260.

[0109] The two cooling fans 260 are installed on the same fan bracket 2110 and can be used as an integral fan module. Before installation, the entire fan module can be pre-assembled as one, and then installed as a whole in the housing 210, which improves assembly efficiency and reduces assembly difficulty.

[0110] In some embodiments of the present application, the cabinet 100 is provided with a partition plate 600 in its internal space to divide the space inside the cabinet into two independent upper and lower compartments, the upper one is the air-conditioning compartment 110, and the lower one is the battery compartment 120. Water and dust entering the air-conditioning compartment 110 will not enter the battery compartment 120, thereby avoiding safety hazards such as short circuit of the battery PACK2 due to water and dust ingress.

[0111] A mounting angle code 2120 is provided on the bottom plate of the shell 210 of the direct cooling module 200, and the direct cooling module 200 is fixed on the partition plate 600 as a whole by screw fastening.

[0112] In some embodiments of the present application, a pull-out handle 2130 is provided on the front side plate of the housing 210 and is located outside the left and right ends of the return air outlet 213. The direct cooling module 200 can be detached from the cabinet 100 by removing the screws, and the entire direct cooling module 200 can be easily pulled out by holding the pull-out handle 2130.

[0113] In some embodiments of the present application, reference Figures 13 to 17The electric control box 250 is arranged near the left side plate of the housing 210. The left side plate of the housing 210 is composed of a detachable first side plate 211 and a second side plate 212. The first side plate 211 is directly opposite to the cover of the electric control box 250, and the cover of the electric control box 250 is detachable; the second side plate 212 is directly opposite to the area where the heat exchanger 230 and the heat dissipation fan 260 are located. The first side plate 211 can serve as a maintenance plate of the electric control box 250, which is a detachable structure. When maintenance or repair is required, the first side plate 211 can be removed, and then the cover of the electric control box 250 can be removed, and relevant operations can be performed on the internal electrical components of the electric control box 250.

[0114] Similarly, the second side plate 212 may also be configured as a detachable structure to facilitate maintenance of the cooling fan 260 or the heat exchanger 230 .

[0115] In some embodiments of the present application, in order to further facilitate the maintenance or repair of the electric control box 250, the portion of the cabinet 100 corresponding to the left side plate of the direct cooling module 200 is also configured as a detachable structure.

[0116] The above-mentioned detachable structure can be a screw connection structure or a snap connection structure, etc.

[0117] like Fig.13 and Fig.14 As shown, in some embodiments of the present application, the electric control box 250 is provided with a radiator 252 located on the return air flow path, which can take away the heat generated by the electric control box 250 during operation and ensure the working reliability of the electric control box 250.

[0118] For direct cooling plate 300, refer to Fig.21 , while combining Figures 3 to 5 In some embodiments of the present application, it includes an upper cover 320 and a bottom plate 330, and the upper cover 320 and the bottom plate 330 are combined to form a refrigerant flow channel 310. An inlet channel 1001 connected to the refrigerant inlet 311 of the refrigerant flow channel 310 and an outlet channel 1002 connected to the refrigerant outlet 312 of the refrigerant flow channel 310 are formed on the joint 1000. The outlet end of the inlet channel 1001 is divided into two so as to be connected to the two refrigerant inlets of the refrigerant flow channel 310 one by one.

[0119] In some embodiments of the present application, the connector 1000 is disposed on the upper cover 320, and a through portion is correspondingly provided on the upper cover 320 so that the inlet channel 1001 of the connector 1000 is connected with the refrigerant inlet 311 of the refrigerant flow channel 310, and the outlet channel 1002 of the connector 1000 is connected with the refrigerant outlet 312 of the refrigerant flow channel 310.

[0120] The upper cover 320 and the base are connected into a whole by welding or bolts + sealing rings to ensure that each flow path does not interfere with each other and is well sealed. The connector 1000 can be fixed to the upper cover 320 by welding or bolts + sealing rings to ensure good sealing and non-interference between the inlet and outlet.

[0121] In some embodiments of the present application, the refrigerant flow channel 310 includes two refrigerant inlets 311 and one refrigerant outlet 312, and the refrigerant inlet 311 and the refrigerant outlet 312 are both located on the front end of the direct cooling plate 300, so that the connecting piece 1000 is located on the front end of the direct cooling plate 300, which is convenient for connection with the corresponding parallel branch 800.

[0122] In some embodiments of the present application, two refrigerant inlets 311 are symmetrically arranged on the left and right sides of the refrigerant outlet 312, and the refrigerant flow channel 310 is also symmetrically arranged in the direct cooling plate 300 relative to the left and right width direction center line of the direct cooling plate 300 to make the refrigerant uniform and improve the uniformity of the surface temperature of the direct cooling plate 300.

[0123] In some embodiments of the present application, the refrigerant flow channel 310 is configured so that the refrigerant enters simultaneously from two refrigerant inlets 311 and synchronously flows from the left and right sides of the direct cooling plate 300 to the middle, then flows to the left and right sides, and finally converges to the same refrigerant outlet 312 to flow out, thereby ensuring the temperature moderation on both sides of the direct cooling plate 300 in the width direction, thereby ensuring the uniformity of the overall temperature of the direct cooling plate 300.

[0124] In some embodiments of the present application, a direct cooling energy storage cabinet 1 includes a cabinet body 100 , a direct cooling module 200 and a plurality of direct cooling plates 300 .

[0125] The cabinet 100 is a rectangular cabinet with a front opening. The internal space of the cabinet 100 includes an air conditioning compartment 110 and a battery compartment 120. The battery compartment 120 is used to accommodate at least a plurality of batteries. A through portion is provided on the cabinet 100 at a position corresponding to the air conditioning compartment 110.

[0126] The direct cooling module 200 is placed horizontally in the air conditioning compartment 110 and is used to adjust the temperature of the battery; the direct cooling module 200 includes a shell 210 and a compressor 220, a heat exchanger 230, a heat regenerator 240, an electric control box 250 and a heat dissipation fan 260 located in the shell 210.

[0127] The direct cooling plate 300 is disposed in the battery compartment 120 and is used to be disposed one-to-one with a plurality of batteries for heat exchange.

[0128] The compressor 220 , the heat exchanger 230 , the regenerator 240 and the direct cooling plate 300 are connected in sequence through pipelines to form a refrigerant circulation loop; the pipelines include an internal pipeline 2140 located in the shell 210 and an external pipeline located outside the shell 210 and in the cabinet 100 .

[0129] A cylindrical pipe bracket is provided on the left and right sides of the front opening of the cabinet 100, respectively. Each pipe bracket is arranged along the height direction of the cabinet and has a pipe channel 1110 extending along the height direction of the cabinet. The external pipe passes through the pipe channel to realize pipe routing.

[0130] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0131] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A direct cooling energy storage cabinet, characterized in that: include: A cabinet body, which is a rectangular cabinet body with a front opening, wherein the interior space of the cabinet body includes an air conditioning compartment and a battery compartment, wherein the battery compartment is used to accommodate at least a plurality of batteries; A direct cooling module is arranged in the air conditioning compartment, comprising a shell and a compressor, a heat exchanger, a heat regenerator, an electric control box and a heat dissipation fan located in the shell, wherein a return air port is arranged on the front side plate of the shell, and an air outlet is arranged on the rear side plate; A plurality of direct cooling plates, which are arranged in the battery compartment and correspond one to one to the plurality of batteries; The compressor, the heat exchanger, the regenerator and the direct cooling plate are connected in sequence through pipelines to form a refrigerant circulation loop; the pipeline includes an internal pipeline located in the shell and an external pipeline located outside the shell and in the cabinet, the external pipeline includes two main pipelines and a plurality of parallel branches connected between the two main pipelines, one end of the two main pipelines is respectively connected to the two ports of the regenerator through a three-way stop valve, one end of the parallel branch is connected to one of the main pipelines through a two-way stop valve, and the other end is connected to the other main pipeline through a two-way stop valve, and each of the direct cooling plates is correspondingly connected to each of the parallel branches; A cylindrical pipe bracket is respectively provided on the left and right sides of the front opening of the cabinet, each of the pipe brackets is arranged along the height direction of the cabinet and has a pipe channel extending along the height direction of the cabinet, the two main pipes are respectively extended in the two pipe channels, and the pipe brackets are respectively provided with pipe holes for the parallel branches to pass through at corresponding positions of each direct cooling plate.

2. The direct cooling energy storage cabinet according to claim 1, characterized in that: The pipe running bracket includes a bracket body and a cover plate. The bracket body is fixed in the cabinet. The front side of the bracket body is open. The cover plate is located at the front side of the bracket body and forms the pipe running channel with the bracket body. The cover plate is detachably connected to the bracket body.

3. The direct cooling energy storage cabinet according to claim 2, characterized in that: The cabinet comprises an outer shell and an inner cabinet frame with a front opening, and the bracket bodies of the two pipe routing brackets are respectively fixed on the left and right sides of the front opening of the inner cabinet frame.

4. The direct cooling energy storage cabinet according to claim 1, characterized in that: A plurality of direct cooling plates are arranged at intervals in the battery compartment along the height direction of the cabinet, and the batteries are arranged above the direct cooling plates accordingly, and the direct cooling plates are in contact with the bottom surfaces of the batteries; The air conditioning compartment is located above the battery compartment and on the top of the cabinet; The top end of the pipe support is open, and the bottom end is closed.

5. The direct cooling energy storage cabinet according to claim 2, characterized in that: The cross section of the pipe bracket is rectangular ring-shaped, the cross section of the bracket body is U-shaped, the cross section of the cover plate is U-shaped, the two side plates of the cover plate are attached to the outer surfaces of the two side plates of the bracket body, and the side plates of the cover plate are provided with avoidance holes corresponding to the two-way stop valve.

6. The direct cooling energy storage cabinet according to claim 1, characterized in that: The three-way stop valve is arranged on the front side plate of the shell, and the two-way stop valve is arranged on the opposite sides of the two pipe running brackets.

7. The direct cooling energy storage cabinet according to claim 1, characterized in that: The main pipe is connected to each parallel branch at a connection point with a liquid separation pipe, one end of the liquid separation pipe is connected to the main pipe, and the other end is connected to the two-way stop valve. An electronic expansion valve is provided on the liquid separation pipe, and the liquid separation pipe and the electronic expansion valve are both located in the pipe passage.

8. The direct cooling energy storage cabinet according to claim 7, characterized in that: The liquid distribution pipeline is bent and extended so that the axis of the electronic expansion valve is parallel to the axis of the main pipeline.

9. The direct cooling energy storage cabinet according to claim 8, characterized in that: The cross-section of the pipe channel is rectangular, the cross-section of the liquid distribution pipeline is located on a diagonal line of the rectangular cross-section of the pipe channel, the cross-section of the main pipeline is located on another diagonal line of the rectangular cross-section of the pipe channel, and the cross-section of the electronic expansion valve is located at the intersection of the two diagonals of the rectangular cross-section of the pipe channel.

10. A direct cooling energy storage cabinet, characterized in that: include: A cabinet body, which is a rectangular cabinet body with a front opening, wherein the interior space of the cabinet body includes an air conditioning compartment and a battery compartment, wherein the battery compartment is used to accommodate at least a plurality of batteries; A direct cooling module, which is arranged in the air conditioning compartment and is used to adjust the temperature of the battery; the direct cooling module includes a shell and a compressor, a heat exchanger, a heat regenerator, an electric control box and a heat dissipation fan located in the shell, and the front side plate of the shell is provided with a return air port, and the rear side plate is provided with an air outlet; A plurality of direct cooling plates, which are arranged in the battery compartment and correspond one to one to the plurality of batteries; The compressor, heat exchanger, regenerator and direct cooling plate are connected in sequence through pipelines to form a refrigerant circulation loop; the pipelines include internal pipelines located in the shell and external pipelines located outside the shell and in the cabinet; A cylindrical pipe running bracket is respectively provided on the left and right sides of the front opening of the cabinet, each of which is arranged along the height direction of the cabinet and has a pipe running channel extending along the height direction of the cabinet, and the external pipeline passes through the pipe running channel to realize pipe running.

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