Heat exchange device for energy storage device and energy storage device with same

Abstract

The utility model discloses a heat exchange device for an energy storage device and the energy storage device with the heat exchange device, the heat exchange device for the energy storage device comprises a first heat exchange system and a second heat exchange system, the first heat exchange system is communicated with an energy storage inverter of the energy storage device and is used for cooling the energy storage inverter; the energy storage device comprises a plurality of battery packs and cold plates arranged between every two adjacent battery packs, the second heat exchange system communicates with the cold plates, and the cold plates exchange heat with the adjacent battery packs; wherein in the first direction, the cooling coil of the first heat exchange system and the condenser of the second heat exchange system are adjacent and are sequentially arranged, the heat exchange device further comprises a heat dissipation fan, in the first direction, the heat dissipation fan, the cooling coil and the condenser are adjacent and are sequentially arranged, and airflow blown out by the heat dissipation fan circulates from the cooling coil to the condenser. According to the heat exchange device, heat exchange is achieved for the condenser and the cooling coil, meanwhile, the size of the heat exchange device can be reduced, and energy consumption of the heat exchange device is reduced.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of batteries, and in particular to a heat exchange device for an energy storage device and an energy storage device having the heat exchange device. Background Art

[0002] With the rapid development of new energy power, energy storage technology is increasingly being used in power systems. The core of the energy storage system is the battery pack, whose performance directly affects the stability and reliability of the entire system. Existing energy storage devices use an independently sealed box structure design, and use liquid cooling to cool the battery pack and energy storage inverter separately, resulting in a low system volume utilization rate. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a heat exchange device for an energy storage device, wherein the heat exchange device is a condenser and a cooling coil, which can realize heat exchange while reducing the volume of the heat exchange device and reducing the energy consumption of the heat exchange device.

[0004] The utility model also provides an energy storage device, which includes the above-mentioned heat exchange device for the energy storage device.

[0005] According to an embodiment of the utility model, a heat exchange device for an energy storage device includes a first heat exchange system and a second heat exchange system, wherein the first heat exchange system is connected to an energy storage inverter of the energy storage device and is used to cool the energy storage inverter; the energy storage device includes a plurality of battery packs and a cold plate arranged between two adjacent battery packs, the second heat exchange system is connected to the cold plate, and the cold plate exchanges heat with the adjacent battery packs; wherein, along a first direction, a cooling coil of the first heat exchange system is adjacent to a condenser of the second heat exchange system and are arranged in sequence, and the heat exchange device also includes a heat dissipation fan, and along the first direction, the heat dissipation fan and the cooling coil are adjacent to the condenser and are arranged in sequence, and the airflow blown out by the heat dissipation fan flows from the cooling coil toward the condenser.

[0006] According to the heat exchange device for energy storage device of the embodiment of the utility model, the first heat exchange system is connected with the energy storage inverter of the energy storage device, the second heat exchange system is connected with the cold plate, the cold plate exchanges heat with the adjacent battery pack, the heat dissipation fan, the cooling coil and the condenser are arranged in sequence, and the airflow blown out by the heat dissipation fan flows from the cooling coil toward the condenser. When the heat dissipation fan is working, it can accelerate the flow of external airflow, accelerate the heat exchange between the refrigerant in the condenser and the cooling coil and the external airflow, increase the heat exchange effect of the condenser and the cooling coil, and the heat dissipation fan can realize heat exchange for the condenser and the cooling coil at the same time, which can reduce the volume of the heat exchange device, and can reduce the space occupation and cost of the heat exchange device; and when the second heat exchange system is heating, the hotter airflow after heat exchange around the cooling fan is blown to the condenser through the heat dissipation fan, which is convenient for the condenser to absorb heat from the external environment, increase the heat absorption effect of the condenser, increase the heating effect of the second heat exchange system, and reduce the energy consumption of the heat exchange device.

[0007] In some embodiments of the present invention, the first heat exchange system includes a first cooling circuit and a circulating pump, a first heat exchange medium flows in the first cooling circuit, at least a portion of the first cooling circuit is arranged in the energy storage inverter, and the first cooling circuit is connected to the cooling coil; the inlet and outlet of the circulating pump are both connected to the first cooling circuit.

[0008] In some embodiments of the present invention, the first heat exchange system further includes an expansion tank, which is connected to the first cooling circuit and is disposed between the energy storage inverter and the cooling coil.

[0009] In some embodiments of the present invention, the second heat exchange system also includes a second cooling circuit and a compressor, a second heat exchange medium flows in the second cooling circuit, and the second cooling circuit is connected to the condenser and the cold plate; the compressor is arranged between the condenser and the plurality of cold plates, and the compressor is connected to the second cooling circuit.

[0010] In some embodiments of the present invention, the second heat exchange system further includes an expansion valve, which is disposed between the condenser and the plurality of cold plates and is separated from the compressor, and the expansion valve is in communication with the second cooling circuit.

[0011] In some embodiments of the present invention, the second heat exchange system further includes a dryer, wherein the dryer is disposed between the expansion valve and the condenser, and the dryer is in communication with the second cooling circuit.

[0012] In some embodiments of the present invention, the second heat exchange system further includes a dehumidification system, and the dehumidification system is disposed between the expansion valve and the compressor, and the dehumidification system is arranged in parallel with the cold plate.

[0013] In some embodiments of the present invention, the dehumidification system includes a shell and a dehumidification coil, the shell defines a accommodating space, and the shell is provided with an air inlet and an air outlet; the dehumidification coil is arranged in the accommodating space.

[0014] In some embodiments of the present invention, a drain port is provided on the bottom wall of the shell.

[0015] The energy storage device according to the embodiment of the utility model includes the above-mentioned heat exchange device for the energy storage device.

[0016] According to the energy storage device of the embodiment of the utility model, the first heat exchange system is connected with the energy storage inverter of the energy storage device, the second heat exchange system is connected with the cold plate, the cold plate exchanges heat with the adjacent battery pack, the heat dissipation fan, the cooling coil and the condenser are arranged in sequence, and the airflow blown out by the heat dissipation fan flows from the cooling coil toward the condenser. When the heat dissipation fan is working, it can accelerate the flow of the external airflow, accelerate the heat exchange between the refrigerant in the condenser and the cooling coil and the external airflow, increase the heat exchange effect of the condenser and the cooling coil, and the heat dissipation fan can realize heat exchange for the condenser and the cooling coil at the same time, which can reduce the volume of the heat exchange device, and can reduce the space occupation and cost of the heat exchange device; and when the second heat exchange system is heating, the hotter airflow after heat exchange around the cooling fan is blown to the condenser through the heat dissipation fan, which is convenient for the condenser to absorb heat from the external environment, increase the heat absorption effect of the condenser, increase the heating effect of the second heat exchange system, and reduce the energy consumption of the heat exchange device.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of a heat exchange device according to an embodiment of the utility model;

[0020] Figure 2 is a three-dimensional diagram of an energy storage device according to an embodiment of the utility model;

[0021] Figure 3 It is a side view of the energy storage device according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] 100. Energy storage device;

[0024] 10. Heat exchange device;

[0025] 1. First heat exchange system; 11. Cooling coil; 12. First cooling circuit; 13. Circulation pump; 14. Expansion tank;

[0026] 2. Second heat exchange system; 21. Condenser; 22. Second cooling circuit; 23. Compressor; 24. Expansion valve; 25. Dryer; 26. Dehumidification system; 261. Shell; 2611. Air inlet; 2612. Air outlet; 2313. Accommodation space; 2614. Drain; 262. Dehumidification coil;

[0027] 3. Cooling fan;

[0028] 20. Energy storage inverter;

[0029] 30. Battery pack;

[0030] 40. Cold plate. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 the present invention can be understood according to specific circumstances.

[0034] Reference below Figure 1-Figure 3 A heat exchange device 10 for an energy storage device 100 according to an embodiment of the present invention is described.

[0035] like Figure 1 As shown, the heat exchange device 10 for the energy storage device 100 according to the embodiment of the utility model includes a first heat exchange system 1 and a second heat exchange system 2 .

[0036] Specifically, Figure 1 and Figure 3 As shown, the first heat exchange system 1 is connected to the energy storage inverter 20 (Power Conversion System, PCS for short) of the energy storage device 100, and is used to cool the energy storage inverter 20. It can be understood that the energy storage inverter 20 is a power conversion device, and its core function is to convert DC power into AC power. The energy storage inverter 20 can be widely used in many fields such as home energy management, commercial buildings, industrial energy storage, and grid energy storage. For example, in home energy management, the energy storage inverter 20 can be used in conjunction with a photovoltaic power generation system to store solar power during the day and provide electricity at night or during power outages to ensure the stability and continuity of household electricity use. In commercial buildings, the energy storage inverter 20 can help companies reduce peak loads and fill valleys during peak electricity price periods, reduce electricity bills, and serve as an emergency power supply to ensure the normal operation of key equipment.

[0037] During the operation of the energy storage inverter 20 , the energy storage inverter 20 generates heat, and the first heat exchange system 1 can take away the heat of the energy storage inverter 20 to prevent the energy storage inverter 20 from overheating and thermal runaway.

[0038] like Figure 1 and Figure 2 As shown, the energy storage device 100 includes a plurality of battery packs 30 and a cold plate 40 disposed between two adjacent battery packs 30. The second heat exchange system 2 is connected to the cold plate 40, and the cold plate 40 exchanges heat with the adjacent battery packs 30. The second heat exchange system 2 can take away the heat in the plurality of battery packs 30 to prevent the battery packs 30 from overheating and thermal runaway. In addition, when the ambient temperature is relatively cold, the second heat exchange system 2 can provide a certain amount of heat for the battery packs 30 to prevent the battery packs 30 from losing charge and preventing the performance of the battery packs 30 from deteriorating.

[0039] Among them, Figure 1 As shown, along the first direction (such as Figure 1The heat exchange device 10 further includes a heat dissipation fan 3. Along the first direction, the heat dissipation fan 3, the cooling coil 11 and the condenser 21 are adjacent to each other and arranged in sequence. The airflow blown by the heat dissipation fan 3 flows from the cooling coil 11 toward the condenser 21. It can be understood that after the second heat exchange system 2 dissipates heat for the battery pack 30, the refrigerant with a higher temperature enters the condenser 21, and the refrigerant in the first heat exchange system 1 enters the cooling coil 11 after heat exchange with the energy storage inverter 20. The refrigerant in the condenser 21 and the cooling coil 11 can exchange heat with the external airflow respectively. When the heat dissipation fan 3 is working, the flow of the external airflow can be accelerated, and the heat exchange between the refrigerant in the condenser 21 and the cooling coil 11 and the external airflow can be accelerated, thereby increasing the heat exchange effect of the condenser 21 and the cooling coil 11. The heat dissipation fan 3 can simultaneously realize heat exchange for the condenser 21 and the cooling coil 11, thereby reducing the volume of the heat exchange device 10, and thereby reducing the space occupancy and cost of the heat exchange device 10.

[0040] In addition, if Figure 1 As shown, when the ambient temperature is relatively cold, the second heat exchange system 2 provides a certain amount of heat for the battery pack 30, and the refrigerant with a lower temperature enters the condenser 21, while the refrigerant in the first heat exchange system 1 enters the cooling coil 11 after heat exchange with the energy storage inverter 20. The condenser 21 needs to absorb heat from the external environment, and the cooling coil 11 dissipates heat to the external environment. When the heat dissipation fan 3 is working, the hotter air flow after heat exchange around the cooling fan is blown toward the condenser 21 through the heat dissipation fan 3, which is convenient for the condenser 21 to absorb heat from the external environment, increase the heat absorption effect of the condenser 21, increase the heating effect of the second heat exchange system 2, and reduce the energy consumption of the heat exchange system.

[0041] According to the heat exchange device 10 of the embodiment of the utility model, the first heat exchange system 1 is connected to the energy storage inverter 20 of the energy storage device 100, the second heat exchange system 2 is connected to the cold plate 40, the cold plate 40 exchanges heat with the adjacent battery pack 30, the heat dissipation fan 3, the cooling coil 11 and the condenser 21 are arranged in sequence along the first direction, and the airflow blown out by the heat dissipation fan 3 flows from the cooling coil 11 toward the condenser 21. When the heat dissipation fan 3 is working, it can accelerate the flow of external airflow, accelerate the heat exchange between the refrigerant in the condenser 21 and the cooling coil 11 and the external airflow, and increase the heat exchange effect of the condenser 21 and the cooling coil 11. The heat dissipation fan 3 can realize heat exchange for the condenser 21 and the cooling coil 11 at the same time, which can reduce the volume of the heat exchange device 10 and reduce the space occupancy and cost of the heat exchange device 10; and when the second heat exchange system 2 is heating, the hotter airflow after heat exchange around the cooling fan is blown to the condenser 21 through the heat dissipation fan 3, which is convenient for the condenser 21 to absorb heat from the external environment, increase the heat absorption effect of the condenser 21, increase the heating effect of the second heat exchange system 2, and reduce the energy consumption of the heat exchange device 10.

[0042] In some embodiments, the energy storage device 100 includes an energy storage battery module, which adopts CTR technology. Multiple battery packs 30 installed on a tray are stacked, and the protective box in the energy storage battery module is eliminated. The energy storage battery module is small in size. The smaller energy storage battery module is matched with the smaller heat exchange device 10. The energy storage device 100DE1 has a high volume utilization rate and occupies a small area.

[0043] In some embodiments of the present invention, Figure 1 As shown, the first heat exchange system 1 includes a first cooling circuit 12 and a circulating pump 13. A first heat exchange medium flows in the first cooling circuit 12. At least a portion of the first cooling circuit 12 is disposed in the energy storage inverter 20. The first cooling circuit 12 is connected to the cooling coil 11. The first heat exchange medium flows through the energy storage inverter 20. The first heat exchange medium exchanges heat with the energy storage heat exchanger. The first heat exchange medium with a higher temperature enters the cooling coil 11 and is cooled in the cooling coil 11. After cooling, the first heat exchange medium re-enters the energy storage inverter 20 to realize the circulation of the first heat exchange medium.

[0044] like Figure 1 As shown, the inlet and outlet of the circulation pump 13 are both connected to the first cooling circuit 12, and the circulation pump 13 can provide power for the circulation of the first heat exchange medium, thereby increasing the reliability of the circulation of the first heat exchange medium.

[0045] In this embodiment, if Figure 1 As shown, the first heat exchange medium is water, which is relatively clean and energy-saving and does not need to be replaced.

[0046] Furthermore, if Figure 1 As shown, the first heat exchange system 1 also includes an expansion tank 14, which is connected to the first cooling circuit 12. The expansion tank 14 is arranged between the energy storage inverter 20 and the cooling coil 11. The expansion tank 14 can accommodate additional first heat exchange medium to adjust the pressure of the first heat exchange system 1 to keep it within a stable range. When the pressure drops, the expansion tank 14 will release the stored first heat exchange medium to keep the pressure at an ideal level. The expansion tank 14 plays a role in stabilizing the pressure of the first heat exchange flow path by absorbing the pressure change of the first heat exchange medium, thereby ensuring the safe and stable operation of the first heat exchange system 1.

[0047] In some embodiments of the present invention, Figure 1As shown, the second heat exchange system 2 also includes a second cooling circuit 22 and a compressor 23. A second heat exchange medium flows in the second cooling circuit 22. The second cooling circuit 22 is connected to the condenser 21 and the cold plate 40. Under the refrigeration condition, the liquid second heat exchange medium flows through the cold plate 40, the second heat exchange medium exchanges heat with the battery pack 30, the second heat exchange medium absorbs heat and changes into a gaseous state, the gaseous second heat exchange medium with a higher temperature enters the condenser 21, and undergoes a cooling phase change in the condenser 21. After the cooling is completed, the liquid second heat exchange medium re-enters the cold plate 40 to realize the circulation of the second heat exchange medium. Under the heating condition, the gaseous second heat exchange medium enters the cold plate 40, the second heat exchange medium exchanges heat with the battery pack 30, the second heat exchange medium releases heat and changes into a liquid state, the liquid second heat exchange medium with a lower temperature enters the condenser 21, and undergoes a heat absorbing phase change in the condenser 21. After the heat absorption is completed, the gaseous second heat exchange medium re-enters the cold plate 40 to realize the circulation of the second heat exchange medium.

[0048] like Figure 1 As shown, the compressor 23 is disposed between the condenser 21 and the plurality of cold plates 40, and the compressor 23 is connected to the second cooling circuit 22. Under the refrigeration condition, the low-temperature and low-pressure gaseous second heat exchange medium flowing out of the cold plate 40 is compressed into a high-temperature and high-pressure gaseous second heat exchange medium, and then enters the condenser 21, so that the second heat exchange medium releases heat and liquefies in the condenser 21. Under the heating condition, the second heat exchange medium flows in the reverse direction, and the low-temperature and low-pressure gaseous second heat exchange medium flowing out of the condenser 21 is compressed into a high-temperature and high-pressure gaseous second heat exchange medium, and then enters the cold plate 40, so that the second heat exchange medium releases heat in the cold plate 40, thereby increasing the heating effect of the second heat exchange medium in the battery pack 30.

[0049] Furthermore, if Figure 1 As shown, the second heat exchange system 2 further includes an expansion valve 24, which is disposed between the condenser 21 and the plurality of cold plates 40 and is separated from the compressor 23, and the expansion valve 24 is connected to the second cooling circuit 22. Under refrigeration conditions, the low-temperature and high-pressure liquid second heat exchange medium flowing out of the condenser 21 is throttled and depressurized by the expansion valve 24 to become a low-temperature and low-pressure liquid second heat exchange medium, and then enters the cold plate 40, so that the second heat exchange medium absorbs heat in the cold plate 40, thereby increasing the refrigeration effect of the second heat exchange medium in the battery pack 30.

[0050] Furthermore, if Figure 1As shown, the second heat exchange system 2 also includes a dryer 25, which is arranged between the expansion valve 24 and the condenser 21, and the dryer 25 is connected to the second cooling circuit 22. Under the refrigeration condition, the low-temperature and high-pressure liquid second heat exchange medium flowing out of the condenser 21 is dried by the dryer 25 to reduce the water content in the liquid second heat exchange medium, thereby preventing the liquid second heat exchange medium from ice jam caused by water freezing. The dryer 25 can also filter out impurities and particles in the second heat exchange medium, keep the second heat exchange system 2 clean, and help ensure that the second heat exchange medium can circulate smoothly in the second heat exchange system 2, thereby improving the refrigeration efficiency.

[0051] In some embodiments of the present invention, Figure 1 As shown, the second heat exchange system 2 further includes a dehumidification system 26, which is disposed between the expansion valve 24 and the compressor 23, and is arranged in parallel with the cold plate 40. By adding the dehumidification system 26 to the second heat exchange system 2, it is possible to avoid a large amount of moisture in the battery pack 30 in the energy storage device 100, and to avoid the energy storage device 100 from having a short circuit or other faults due to a humid environment.

[0052] Furthermore, if Figure 1 As shown, the dehumidification system 26 includes a shell 261 and a dehumidification coil 262. The shell 261 defines a storage space 2313. The shell 261 is provided with an air inlet 2611 and an air outlet 2612. The dehumidification coil 262 is arranged in the storage space 2313. The hot and humid airflow in the energy storage device 100 enters the storage space 2313 from the air inlet 2611 and contacts the dehumidification coil 262. A second heat exchange medium with a lower temperature flows in the dehumidification coil 262. The hot and humid airflow generates condensed water when it is cooled, and flows downward along the dehumidification coil 262 and flows to the bottom wall of the shell 261, so as to prevent the condensed water from affecting the battery pack 30 and prevent the battery pack 30 from having a short circuit or other faults. The dehumidified airflow leaves the dehumidification system 26 from the air outlet 2612, so as to achieve air pressure balance inside and outside the dehumidification system 26.

[0053] Furthermore, if Figure 1 As shown, the bottom wall of the shell 261 is provided with a drain port 2614, and the condensed water on the bottom wall of the shell 261 can flow out of the dehumidification system 26 from the drain port 2614, and a drainage pipeline can also be provided in the energy storage device 100, and the condensed water flows out of the energy storage device 100 from the drainage pipeline, so as to prevent the condensed water from affecting the battery pack 30 and preventing the battery pack 30 from having faults such as short circuit.

[0054] The energy storage device 100 according to the embodiment of the present utility model includes the above-mentioned heat exchange device 10 .

[0055] According to the energy storage device 100 of the embodiment of the utility model, the first heat exchange system 1 is connected to the energy storage inverter 20 of the energy storage device 100, the second heat exchange system 2 is connected to the cold plate 40, the cold plate 40 exchanges heat with the adjacent battery pack 30, the heat dissipation fan 3, the cooling coil 11 and the condenser 21 are arranged in sequence, and the airflow blown by the heat dissipation fan 3 flows from the cooling coil 11 toward the condenser 21. When the heat dissipation fan 3 is working, it can accelerate the flow of external airflow, accelerate the heat exchange between the refrigerant in the condenser 21 and the cooling coil 11 and the external airflow, and increase the heat exchange effect of the condenser 21 and the cooling coil 11. The heat dissipation fan 3 can realize heat exchange for the condenser 21 and the cooling coil 11 at the same time, which can reduce the volume of the heat exchange device 10 and reduce the space occupancy and cost of the heat exchange device 10; and when the second heat exchange system 2 is heating, the hotter airflow after heat exchange around the cooling fan is blown to the condenser 21 through the heat dissipation fan 3, which is convenient for the condenser 21 to absorb heat from the external environment, increase the heat absorption effect of the condenser 21, increase the heating effect of the second heat exchange system 2, and reduce the energy consumption of the heat exchange device 10.

[0056] The heat exchange device 10 for the energy storage device 100 according to the embodiment of the utility model and other structures and operations of the energy storage device 100 having the heat exchange device 10 are known to those skilled in the art and will not be described in detail here.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat exchange device for an energy storage device, characterized in that: include: a first heat exchange system, the first heat exchange system being in communication with the energy storage inverter of the energy storage device and being used for cooling the energy storage inverter; A second heat exchange system, wherein the energy storage device comprises a plurality of battery packs and a cold plate disposed between two adjacent battery packs, the second heat exchange system is in communication with the cold plate, and the cold plate exchanges heat with the adjacent battery packs; Among them, along the first direction, the cooling coil of the first heat exchange system is adjacent to the condenser of the second heat exchange system and is arranged in sequence, and the heat exchange device also includes a heat dissipation fan. Along the first direction, the heat dissipation fan, the cooling coil and the condenser are adjacent to each other and are arranged in sequence, and the airflow blown out by the heat dissipation fan flows from the cooling coil toward the condenser.

2. The heat exchange device for an energy storage device according to claim 1, characterized in that: The first heat exchange system comprises: a first cooling circuit, wherein a first heat exchange medium flows in the first cooling circuit, at least a portion of the first cooling circuit is disposed in the energy storage inverter, and the first cooling circuit is in communication with the cooling coil; A circulation pump, wherein an inlet and an outlet of the circulation pump are both in communication with the first cooling circuit.

3. The heat exchange device for an energy storage device according to claim 2, characterized in that: The first heat exchange system also includes: An expansion tank, the expansion tank is connected to the first cooling circuit, and the expansion tank is arranged between the energy storage inverter and the cooling coil.

4. The heat exchange device for an energy storage device according to any one of claims 1 to 3, characterized in that: The second heat exchange system also includes: a second cooling circuit, in which a second heat exchange medium flows, and the second cooling circuit is connected to both the condenser and the cold plate; A compressor is provided between the condenser and the plurality of cold plates, and the compressor is communicated with the second cooling circuit.

5. The heat exchange device for an energy storage device according to claim 4, characterized in that: The second heat exchange system also includes: An expansion valve is disposed between the condenser and the plurality of cold plates and is separated from the compressor, and the expansion valve is communicated with the second cooling circuit.

6. The heat exchange device for an energy storage device according to claim 5, characterized in that: The second heat exchange system also includes: A dryer is provided between the expansion valve and the condenser, and the dryer is communicated with the second cooling circuit.

7. The heat exchange device for an energy storage device according to claim 5, characterized in that: The second heat exchange system also includes: A dehumidification system is provided between the expansion valve and the compressor, and the dehumidification system is arranged in parallel with the cold plate.

8. The heat exchange device for an energy storage device according to claim 7, characterized in that: The dehumidification system comprises: A housing defines a receiving space and is provided with an air inlet and an air outlet; A dehumidification coil is arranged in the accommodating space.

9. The heat exchange device for an energy storage device according to claim 8, characterized in that: The bottom wall of the shell is provided with a water drain port.

10. An energy storage device, characterized in that: The invention comprises a heat exchange device for an energy storage device according to any one of claims 1 to 9.

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