Energy storage cabinet

Abstract

The utility model discloses an energy storage cabinet which comprises a battery pack and a heat exchange device, the heat exchange device comprises at least one heat exchange plate, the heat exchange plate is in contact with the battery pack, a heat exchange runner is formed on the heat exchange plate, the width of the heat exchange runner is W, and W is larger than or equal to 1.9 mm and smaller than or equal to 2.1 mm. Therefore, the heat exchange plate is in direct contact with the battery pack, and the width of the heat exchange flow channels in the heat exchange plate is limited, so that the heat exchange efficiency of the heat exchange device on the battery pack can be effectively improved, the battery pack is kept in the optimal working temperature range, and the heat exchange flow channels arranged in the heat exchange plate in parallel are beneficial to realizing uniform heat exchange on the battery pack; the temperature difference between different positions of the battery pack is reduced, and the temperature consistency of the battery pack is kept, so that the service life and the safety of the battery pack are improved.

Description

Technical Field

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

[0002] In the prior art, during the charge and discharge process of the battery pack in the energy storage cabinet, a large amount of heat is generated. If the heat cannot be discharged to the inside of the cabinet in time, the battery is likely to cause thermal runaway. Currently, the mainstream heat dissipation solutions include two methods: air cooling and liquid cooling. However, these solutions have the following defects: the design of the air-cooling heat dissipation flow channel is difficult, the temperature difference of the energy storage system is large, and the temperature consistency of the battery pack is poor; the liquid-cooling heat dissipation solution undergoes two heat exchanges, and the heat exchange efficiency is poor. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the utility model is to provide an energy storage cabinet, which can improve the heat exchange efficiency of the heat exchange device for the battery pack and ensure the temperature consistency of the battery pack.

[0004] The energy storage cabinet according to the embodiment of the utility model includes: a battery pack, a heat exchange device and a connecting device. The heat exchange device includes at least one heat exchange plate, the heat exchange plate is in contact with the battery pack, the heat exchange plate is formed with a heat exchange flow channel, the width of the heat exchange flow channel is W, and W satisfies: 1.9 mm ≤ W ≤ 2.1 mm; the connecting device is arranged between the battery pack and the heat exchange device, and the connecting device includes: a chuck and a seal. The chuck is arranged on the heat exchange plate; the seal cooperates with the chuck, and when the connecting device is connected to the heat exchange plate, the seal is arranged between the chuck and the heat exchange plate.

[0005] The energy storage cabinet according to the embodiment of the utility model can effectively improve the heat exchange efficiency of the heat exchange device for the battery pack by directly contacting the heat exchange plate with the battery pack and limiting the width of the heat exchange flow channel in the heat exchange plate, so that the battery pack is maintained within the optimal working temperature range. The multiple parallel heat exchange flow channels in the heat exchange plate are beneficial to achieving uniform heat exchange for the battery pack, reducing the temperature difference between different positions of the battery pack, and maintaining the temperature consistency of the battery pack, thereby improving the service life and safety of the battery pack.

[0006] In some embodiments, the heat exchange plate is a direct cooling plate.

[0007] In some embodiments, the heat exchange device includes: a cooling component and a connecting pipe. The cooling component includes a condenser, and one end of the condenser is adapted to be connected to the outlet of the compressor; one end of the connecting pipe is connected to the condenser, and the other end of the connecting pipe is connected to the chuck of the heat exchange plate, and the seal is arranged between the other end of the connecting pipe and the chuck.

[0008] In some embodiments, it further includes: a heat insulation member, which is arranged on the outer peripheral side of the connecting pipe, and the thickness of the heat insulation member is h, and h satisfies: 1.9 mm ≤ h ≤ 2.1 mm.

[0009] In some embodiments, it further includes: at least one electronic expansion valve, which is arranged on the connecting pipe and located between the cooling component and the battery pack.

[0010] In some embodiments, the heat exchange device further includes: a liquid distributor, which is arranged between the electronic expansion valve and the heat exchange plate.

[0011] In some embodiments, there are multiple battery packs, and the multiple battery packs are arranged at intervals; there are multiple heat exchange plates, and the multiple heat exchange plates are respectively in contact with the multiple battery packs. Each heat exchange flow channel formed by each heat exchange plate has a first interface and a second interface. The first interfaces of the heat exchange flow channels formed by the multiple heat exchange plates are all connected to the cooling component, and the second interfaces of the heat exchange flow channels formed by the multiple heat exchange plates are respectively adapted to be connected to the inlet of the compressor. The heat exchange flow channel is adapted for the refrigerant to flow from the first interface to the second interface.

[0012] In some embodiments, the cooling component further includes: a fan, which is arranged facing the condenser.

[0013] In some embodiments, it includes: a housing, which forms an installation cavity. The installation cavity includes a first chamber and a second chamber, and the first chamber and the second chamber are spaced apart; the heat exchange device includes a compressor, which is arranged in the first chamber, the battery pack is arranged in the second chamber, one end of the heat exchange device is connected to the compressor, and the other end of the heat exchange device is connected to the battery pack.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 is a schematic diagram of an energy storage cabinet according to an embodiment of the present utility model;

[0017] Figure 2 is another perspective schematic diagram of the energy storage cabinet according to an embodiment of the present utility model;

[0018] Figure 3Schematic diagram of the housing of the energy storage cabinet according to an embodiment of the present utility model;

[0019] Figure 4 Assembly schematic diagram of the heat exchange device and the battery pack according to an embodiment of the present utility model;

[0020] Figure 5 Schematic diagram of the heat exchange device and the battery pack according to an embodiment of the present utility model;

[0021] Figure 6 Schematic diagram of the working principle of the heat exchange device according to an embodiment of the present utility model;

[0022] Figure 7 Schematic diagram of the heat exchange plate according to an embodiment of the present utility model.

[0023] Reference numerals:

[0024] 100, energy storage cabinet;

[0025] 10, battery pack;

[0026] 20, heat exchange device; 21, heat exchange plate; 22, cooling component; 23, connecting pipe; 24, condenser; 241, fan; 25, electronic expansion valve; 26, liquid distributor; 27, compressor; 28, solenoid valve; 29, gas-liquid separator;

[0027] 30, housing; 31, first chamber; 32, second chamber. Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. Below, reference is made to Figures 1-7 Describe the energy storage cabinet 100 according to an embodiment of the present utility model, including: a battery pack 10 and a heat exchange device 20.

[0029] Specifically, as Figures 1-7 shown, the heat exchange device 20 includes at least one heat exchange plate 21. The heat exchange plate 21 is in contact with the battery pack 10. The heat exchange plate 21 is formed with a heat exchange flow channel, and the width of the heat exchange flow channel is W, and W satisfies: 1.9 mm ≤ W ≤ 2.1 mm.

[0030] Combined with Figures 1-7 , the heat exchange plate 21 is directly in contact with the battery pack 10, and the heat generated by the battery is directly transferred to the heat exchange plate 21 through contact. A heat exchange flow channel is designed inside the heat exchange plate 21, and the refrigerant suitable for heat exchange is adapted to flow in the heat exchange flow channel. A plurality of parallel heat exchange flow channels are formed in the heat exchange plate 21, and the refrigerant flows uniformly in the heat exchange flow channels. The battery pack 10 includes a plurality of battery cells, and the plurality of heat exchange flow channels can uniformly exchange heat for the plurality of battery cells to ensure that the temperatures of the plurality of battery cells are uniform.

[0031] The size of the heat exchange flow channel affects the flow characteristics of the refrigerant, including flow velocity, pressure loss, and turbulence degree, etc., thereby affecting the heat exchange efficiency. If the width of the heat exchange flow channel is less than 1.9 mm, the heat exchange flow channel is too narrow, which may increase the pressure loss and affect the circulation of the refrigerant in the heat exchange plate 21. If the width of the heat exchange flow channel is greater than 2.1 mm, the heat exchange flow channel is too wide, which may cause the refrigerant flow velocity to decrease and affect the heat exchange efficiency. For example, the width W of the heat exchange flow channel is 2 mm.

[0032] According to the energy storage cabinet 100 of the embodiment of the present utility model, by directly contacting the heat exchange plate 21 with the battery pack 10 and limiting the width of the heat exchange flow channel in the heat exchange plate 21, the heat exchange efficiency of the heat exchange device 20 for the battery pack 10 can be effectively improved, so that the battery pack 10 is maintained within the optimal working temperature range. The multiple parallel heat exchange flow channels in the heat exchange plate 21 are beneficial to realizing uniform heat exchange for the battery pack 10, reducing the temperature difference between different positions of the battery pack 10, and maintaining the temperature consistency of the battery pack 10, thereby improving the service life and safety of the battery pack 10.

[0033] According to some embodiments of the present utility model, as Figure 7 shown, the heat exchange plate 21 is a direct cooling plate. A heat exchange flow channel is formed inside the direct cooling plate to guide the refrigerant to flow in the plate, so as to directly contact the battery and take away heat. The contact interface between the direct cooling plate and the battery pack 10 is flat to ensure good thermal contact. Thus, the advantage of the direct cooling plate is that it can directly and effectively absorb the heat generated by the battery pack 10. Compared with indirect cooling systems (such as air cooling or liquid cooling circuits), the direct cooling plate can usually provide a faster response time and higher thermal management efficiency. The heat exchange plate 21 being a direct cooling plate can effectively enhance the heat exchange efficiency of the heat exchange plate 21 for the battery pack 10.

[0034] According to some embodiments of the present utility model, as Figures 4-6 shown, it further includes: a connecting device, which is arranged between the battery pack 10 and the heat exchange device 20. The connecting device includes: a chuck and a seal. The chuck is arranged on the heat exchange plate 21; the seal cooperates with the chuck, and when the connecting device is connected to the heat exchange plate 21, the seal is arranged between the chuck and the heat exchange plate 21.

[0035] The chuck is a mechanical fixing device, usually designed to have a certain elasticity or clamping ability, so as to form a reliable connection point on the heat exchange plate 21. Its main function is to tightly connect the connecting device and the heat exchange plate 21 together through physical clamping force to ensure good contact and firm connection between the two. The function of the seal is to form a sealing layer between the chuck and the heat exchange plate 21 to prevent refrigerant leakage or intrusion of external environmental factors (such as dust and moisture). When the connecting device is connected to the heat exchange plate 21, the chuck will compress the seal between the heat exchange plate 21 and the chuck to form a tight seal.

[0036] Thus, the arrangement of the chuck and the seal in the connecting device can ensure a reliable physical connection between the connecting device and the heat exchange plate 21 and ensure the integrity of the connection seal. The design of the connecting device also facilitates disassembly and maintenance, and can easily inspect or replace components of the battery pack 10 or the heat exchange device 20 when necessary.

[0037] According to some embodiments of the present utility model, as Figures 4-6 shown, the heat exchange device 20 includes: a cooling assembly 22 and a connecting pipe 23. The cooling assembly 22 includes a condenser 24, and one end of the condenser 24 is adapted to be connected to the outlet of the compressor 27; one end of the connecting pipe 23 is connected to the condenser 24, and the other end of the connecting pipe 23 is connected to the chuck of the heat exchange plate 21, and a seal is provided between the other end of the connecting pipe 23 and the chuck.

[0038] The main function of the condenser 24 is to convert high-temperature and high-pressure refrigerant gas into low-temperature and high-pressure gas, and the released heat is absorbed by the surrounding environment. One end of the condenser 24 is connected to the outlet of the compressor 27 and is adapted to receive high-temperature and high-pressure refrigerant gas from the compressor 27. One end of the connecting pipe 23 is connected to the condenser 24, and the other end of the connecting pipe 23 is fixedly connected to the heat exchange plate 21 through a chuck, and a seal is provided between the other end of the connecting pipe 23 and the chuck to ensure a sealed connection between the connecting pipe 23 and the heat exchange plate 21.

[0039] Specifically, the compressor 27 is adapted to compress the refrigerant into high-temperature and high-pressure gas, and these gases flow through the pipeline to the condenser 24. One end of the condenser 24 is connected to the outlet of the compressor 27 to receive high-temperature and high-pressure gas from the compressor 27. A blower 241 is provided on one side of the condenser 24, and the blower 241 can cool the high-temperature and high-pressure gas in the condenser 24. The cooled refrigerant is transported to the heat exchange plate 21 through the connecting pipe 23, contacts the battery pack 10 and absorbs the heat generated by the battery to reduce the temperature of the battery pack 10. The refrigerant after absorbing heat becomes gas again, and then returns to the compressor 27 to start a new cycle.

[0040] Thus, through the application of the cooling assembly 22, the connecting pipe 23, the compressor 27 and other structures, the entire heat exchange device 20 forms a closed circulation loop, and the refrigerant circulates therein and completes the heat exchange function for the battery pack 10, ensuring that the battery pack 10 can effectively exchange heat and maintain within a suitable working temperature range, thereby improving the performance and service life of the battery pack 10.

[0041] According to some embodiments of the present utility model, as Figures 4-6 shown, it further includes: a heat insulation member, which is provided on the outer peripheral side of the connecting pipe 23, and the thickness of the heat insulation member is h, and h satisfies: 1.9 mm ≤ h ≤ 2.1 mm.

[0042] When the refrigerant flows in the connecting pipe 23, it may lose some cooling capacity due to the influence of the external environmental temperature. The presence of the heat insulation member can significantly reduce this heat exchange, maintain the temperature of the refrigerant, and improve the thermal management efficiency of the entire system. The heat insulation member is wrapped around the outer peripheral side of the connecting pipe 23 to provide additional thermal insulation, so as to reduce the heat loss of the refrigerant during transmission and maintain its cooling effect. If the thickness of the heat insulation member is less than 1.9 mm, the thickness of the heat insulation member is relatively thin, which is not conducive to the heat insulation effect of the heat insulation member on the refrigerant in the connecting pipe 23. If the thickness of the heat insulation member is greater than 2.1 mm, the thickness of the heat insulation member is relatively thick, which is not conducive to reducing the production cost of the heat insulation member and is likely to cause material waste. For example, the thickness h of the heat insulation member is 2 mm.

[0043] Thus, by reducing unnecessary heat exchange, the heat insulation member helps to reduce the energy consumption of the system, thereby improving the overall energy efficiency. The heat insulation member can also serve as a physical protection layer for the connecting pipe 23, preventing external damage and extending the service life of the connecting pipe 23. The thickness range of the heat insulation member is limited between 1.9 mm and 2.1 mm to ensure the best heat insulation effect and the overall efficiency of the system.

[0044] According to some embodiments of the present invention, as Figure 6 shown, it further includes: at least one electronic expansion valve 25, and the electronic expansion valve 25 is arranged on the connecting pipe 23 and located between the cooling assembly 22 and the battery pack 10.

[0045] The high-temperature and high-pressure gas from the compressor 27 is cooled in the condenser 24 to form a low-temperature and high-pressure gas. The cooled low-temperature and high-pressure refrigerant gas passes through the connecting pipe 23 through the electronic expansion valve 25. The electronic expansion valve 25 can convert the refrigerant gas into a low-temperature liquid refrigerant. The low-temperature liquid refrigerant enters the heat exchange plate 21 through the connecting pipe 23, contacts the battery pack 10 and absorbs the heat generated by the battery to reduce the temperature of the battery pack 10.

[0046] Thus, the electronic expansion valve 25 can convert the gaseous refrigerant gas into a liquid low-temperature refrigerant, facilitating the refrigerant to flow into the heat exchange plate 21 for heat exchange with the battery pack 10 and improving the heat exchange efficiency of the refrigerant with the battery pack 10.

[0047] According to some embodiments of the present invention, as Figure 6 shown, the heat exchange device 20 further includes: a liquid distributor 26, and the liquid distributor 26 is arranged between the electronic expansion valve 25 and the heat exchange plate 21.

[0048] The function of the liquid distributor 26 is to distribute the refrigerant flowing out of the electronic expansion valve 25 more evenly. The liquid distributor 26 can control the flow rate of the refrigerant flowing to the heat exchange plate 21. Thus, the setting of the liquid distributor 26 can control the flow rate of the refrigerant flowing from the connecting pipe 23 to the heat exchange plate 21, achieving uniform heat exchange of the battery pack 10 and improving the heat exchange efficiency.

[0049] According to some embodiments of the present utility model, as Figures 4-6 shown, there are multiple battery packs 10, and the multiple battery packs 10 are arranged at intervals; there are multiple heat exchange plates 21, and the multiple heat exchange plates 21 are respectively in contact with the multiple battery packs 10. Each heat exchange channel formed by the heat exchange plate 21 has a first interface and a second interface. The first interfaces of the heat exchange channels formed by the multiple heat exchange plates 21 are all connected to the cooling component 22, and the second interfaces of the heat exchange channels formed by the multiple heat exchange plates 21 are respectively adapted to be connected to the inlet of the compressor 27. The heat exchange channel is adapted for the refrigerant to flow from the first interface to the second interface.

[0050] The energy storage cabinet 100 has a height direction. The multiple battery packs 10 are arranged at intervals along the height direction of the energy storage cabinet 100. Each battery pack 10 is equipped with a heat exchange plate 21. The heat exchange plate 21 is in close contact with the battery pack 10 and is used to absorb the heat generated during battery operation. The heat exchange plate 21 is internally designed with a heat exchange channel, and the heat exchange channel is adapted for the refrigerant to flow therein, thereby realizing heat exchange. The first interface of the heat exchange channel is adapted to be communicated with the other end of the connecting pipe 23, so as to facilitate the refrigerant to flow into the interior of the heat exchange channel of the heat exchange plate 21. The second interface of the heat exchange channel is connected to the inlet of the compressor 27. The refrigerant enters from the first interface of the heat exchange plate 21, flows through the heat exchange channel and absorbs the heat of the battery pack 10, then flows out from the second interface, and is then sent to the compressor 27 for the next stage of the refrigeration cycle.

[0051] The first interfaces of the multiple heat exchange plates 21 are all connected to the cooling component 22. Each connecting pipe 23 connected to the first interface of the heat exchange plate 21 is provided with a liquid distributor 26, which facilitates the refrigerant to flow evenly into each heat exchange plate 21, forming multiple parallel cooling paths to ensure the temperature uniformity of the multiple battery packs 10 and reduce the temperature difference between the multiple battery packs 10. A liquid return pipeline is provided between the second interface of the heat exchange plate 21 and the inlet of the compressor 27. After the refrigerant circulates in the heat exchange channels of the multiple heat exchange plates 21, it flows out from the second interface and converges into the liquid return pipeline, and then returns to the compressor 27 for the next stage of the refrigeration cycle.

[0052] The liquid return pipeline is also provided with a solenoid valve 28 and a gas-liquid separator 29. The solenoid valve 28 is an electric control valve that can control the flow of refrigerant in the pipeline through an electrical signal. The main purpose of setting the solenoid valve 28 on the liquid return pipeline is to control the refrigerant flow rate and prevent refrigerant backflow. The function of the gas-liquid separator 29 is to separate the liquid and gaseous components from the refrigerant. In the refrigeration cycle, after the refrigerant is heated and evaporated in the heat exchange plate 21, it usually exists in the form of a gas-liquid two-phase. If the gaseous refrigerant containing liquid refrigerant directly enters the compressor 27, it may cause liquid slugging in the compressor 27, that is, the liquid refrigerant directly impacts the piston or impeller of the compressor 27, causing mechanical damage. The gas-liquid separator 29 separates the gaseous refrigerant and the liquid refrigerant through its internal structural design. The gaseous refrigerant can smoothly enter the compressor 27, while the liquid refrigerant is temporarily stored in the gas-liquid separator 29 until it evaporates into a gas and then is sucked into the compressor 27. The solenoid valve 28 and the gas-liquid separator 29 can ensure the stable operation of the refrigeration cycle, improve the efficiency and safety of the system, and at the same time extend the service life of the equipment.

[0053] Thus, such a design allows multiple battery packs 10 to be cooled simultaneously, ensuring temperature equilibrium between the battery packs 10, avoiding local overheating, and thus improving the overall performance and safety of the energy storage cabinet 100. In addition, through multiple parallel cooling paths, the heat exchange device 20 can flexibly adapt to the cooling requirements of different battery packs 10. Even if the heat load of an individual battery pack 10 is relatively high, it will not affect the cooling efficiency of the entire system.

[0054] According to some embodiments of the present invention, such as Figure 6 shown, the cooling component 22 further includes: a fan 241, and the fan 241 is arranged facing the condenser 24.

[0055] The fan 241 increases the contact between the air and the condenser 24 by forcing air flow, thereby accelerating the cooling rate of the refrigerant in the condenser 24. As a cooling medium, the air is blown out from the fan 241, flows through the coils or fins of the condenser 24, and takes away the heat released by the refrigerant.

[0056] Thus, by arranging the fan 241 on one side of the condenser 24 and making the fan 241 face the condenser 24, the air flow rate on the outer peripheral side of the condenser 24 is increased, realizing the cooling effect on the refrigerant in the condenser 24, and thus improving the cooling efficiency of the entire refrigeration system.

[0057] According to some embodiments of the present invention, such as Figure 3 and Figure 4As shown in the figure, it includes: a housing 30, the housing 30 is formed with an installation cavity, the installation cavity includes a first chamber 31 and a second chamber 32, and the first chamber 31 and the second chamber 32 are spaced apart; a heat exchange device 20 includes a compressor 27, the compressor 27 is disposed in the first chamber 31, a battery pack 10 is disposed in the second chamber 32, one end of the heat exchange device 20 is connected to the compressor 27, and the other end of the heat exchange device 20 is connected to the battery pack 10.

[0058] An installation cavity is formed inside the housing 30, and the installation cavity is divided into two independent chambers: a first chamber 31 and a second chamber 32. The compressor 27 is disposed in the first chamber 31. The compressor 27 is a key component of the refrigeration cycle. It is responsible for compressing the refrigerant, changing it from a low-pressure and low-temperature state to a high-pressure and high-temperature state, and pushing the refrigerant to circulate in the system. One end of the heat exchange device 20 is connected to the compressor 27, and the other end is connected to the battery pack 10. After being heated by the compressor 27, the refrigerant will flow through the heat exchange device 20, absorb the heat of the battery pack 10, and then return to the refrigeration cycle for cooling.

[0059] Thus, placing the compressor 27 and the battery pack 10 in different chambers can effectively avoid thermal interference between them. The heat generated when the compressor 27 works will not be directly transferred to the battery pack 10, and vice versa. The spaced arrangement of the first chamber 31 and the second chamber 32 also helps to simplify the internal structure of the energy storage cabinet 100, avoid the thermal influence between the compressor 27 and the battery pack 10, and improve the reliability and energy efficiency of the entire system.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0061] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model.

[0063] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A energy storage cabinet, characterized in that, Comprising: A battery pack; A heat exchange device, the heat exchange device comprising at least one heat exchange plate, the heat exchange plate being in contact with the battery pack, the heat exchange plate being formed with a heat exchange flow channel, the width of the heat exchange flow channel being W, and the W satisfying: 1.9 mm ≤ W ≤ 2.1 mm; A connecting device, the connecting device being provided between the battery pack and the heat exchange device, the connecting device comprising: A chuck, the chuck being provided on the heat exchange plate; A seal, the seal cooperating with the chuck, and when the connecting device is connected to the heat exchange plate, the seal is provided between the chuck and the heat exchange plate.

2. The energy storage cabinet according to claim 1, characterized in that, The heat exchange plate is a direct cooling plate.

3. The energy storage cabinet according to claim 1, wherein, The heat exchange device comprises: A cooling assembly, the cooling assembly comprising a condenser, one end of the condenser being adapted to be connected to the outlet of a compressor; A connecting pipe, one end of the connecting pipe being connected to the condenser, the other end of the connecting pipe being connected to the chuck of the heat exchange plate, and the seal being provided between the other end of the connecting pipe and the chuck.

4. The energy storage cabinet according to claim 3, characterized in that, Further comprising: A heat insulation member, the heat insulation member being provided on the outer peripheral side of the connecting pipe, the thickness of the heat insulation member being h, and the h satisfying: 1.9 mm ≤ h ≤ 2.1 mm.

5. The energy storage cabinet according to claim 3, wherein Further comprising: At least one electronic expansion valve, the electronic expansion valve being provided on the connecting pipe and located between the cooling assembly and the battery pack.

6. The energy storage cabinet according to claim 5, wherein, The heat exchange device further comprises: A liquid distributor, the liquid distributor being provided between the electronic expansion valve and the heat exchange plate.

7. The energy storage cabinet according to claim 3, characterized in that, There are a plurality of battery packs, and the plurality of battery packs are arranged at intervals; There are a plurality of heat exchange plates, the plurality of heat exchange plates being respectively in contact with the plurality of battery packs, the heat exchange flow channels formed by each heat exchange plate having a first interface and a second interface, the first interfaces of the heat exchange flow channels formed by the plurality of heat exchange plates being all connected to the cooling assembly, the second interfaces of the heat exchange flow channels formed by the plurality of heat exchange plates being respectively adapted to be connected to the inlet of the compressor, and the heat exchange flow channels being adapted for the refrigerant to flow from the first interface to the second interface.

8. The energy storage cabinet according to claim 3, characterized in that, The cooling assembly further comprises: A fan, the fan being arranged facing the condenser.

9. The energy storage cabinet according to any one of claims 1-8, characterized in that, Comprising: A housing, the housing forming an installation cavity, the installation cavity comprising a first chamber and a second chamber, the first chamber and the second chamber being spaced apart; The heat exchange device comprises a compressor, the compressor being provided in the first chamber, the battery pack being provided in the second chamber, one end of the heat exchange device being connected to the compressor, and the other end of the heat exchange device being connected to the battery pack.

Images