Heat exchange device and energy storage system

Abstract

The utility model discloses a heat exchange device and an energy storage system, and belongs to the technical field of heat dissipation of energy storage systems. The heat exchange device comprises a heat exchange body, a first fan and a second fan. The heat exchange body is provided with a first heat exchange channel and a second heat exchange channel which are independent of each other, the two ends of the first heat exchange channel communicate with the outside, the two ends of the second heat exchange channel communicate with the inner side of the energy storage device, the first fan is used for forming first airflow in the first heat exchange channel, and the second fan is used for forming second airflow in the second heat exchange channel. At least part of the first heat exchange channel and the second heat exchange channel can conduct heat mutually, so that the first airflow exchanges heat with the second airflow. The heat exchange efficiency and reliability of the heat exchange device are high.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology for energy storage systems, and in particular to a heat exchange device and an energy storage system. Background Technology

[0002] To improve the stability of energy storage converters and high-voltage distribution units under adverse conditions without derating, and to extend their service life, energy storage systems typically incorporate cooling devices to regulate the temperature of the energy storage device. These cooling devices usually employ liquid cooling or air cooling methods to dissipate heat from the energy storage device.

[0003] Among related technologies, liquid cooling devices have low reliability, while air cooling devices have insufficient heat dissipation efficiency. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a heat exchange device and an energy storage system to improve the heat exchange efficiency and reliability of the heat exchange device.

[0005] A heat exchange device according to a first aspect embodiment of this application, used for heat dissipation of an energy storage device, includes:

[0006] The heat exchanger body has a first heat exchange channel and a second heat exchange channel that are independent of each other. Both ends of the first heat exchange channel are connected to the outside, and both ends of the second heat exchange channel are connected to the inside of the energy storage device.

[0007] The first fan is used to generate a first airflow within the first heat exchange channel;

[0008] The second fan is used to generate a second airflow within the second heat exchange channel;

[0009] The first heat exchange channel is at least partially capable of conducting heat with the second heat exchange channel, so that the first airflow and the second airflow exchange heat.

[0010] The heat exchange device according to the embodiments of this application has at least the following beneficial effects:

[0011] Both ends of the first heat exchange channel are connected to the outside, and both ends of the second heat exchange channel are connected to the inside of the energy storage device. This design allows both the first and second heat exchange channels to form a roughly U-shape, extending their length. The longer lengths of both channels increase the heat exchange area within the heat exchange body, thereby improving the heat exchange efficiency. Furthermore, the first airflow enters from the end of the first heat exchange channel connected to the outside and exits from the other end, preventing outside air from entering the energy storage device and reducing the possibility of impurities from the outside air entering the device. This helps maintain the normal and stable operation of the energy storage device. The heat exchange device in this embodiment uses air heat exchange, eliminating the need for liquid cooling pipes within the energy storage device and eliminating the need for inlet and outlet water pipes connected to the liquid cooling pipes of the energy storage device. This results in a simpler structure and higher reliability for the heat exchange device.

[0012] According to some embodiments of this application, the heat exchange device includes a housing, the housing having a first chamber and a second chamber that are independent of each other, the heat exchange body being disposed inside the housing, the heat exchange body being disposed between the first chamber and the second chamber, the first chamber being connected to both ends of the first heat exchange channel, the second chamber being connected to both ends of the second heat exchange channel, the first fan being disposed in the first chamber, and the second fan being disposed in the second chamber.

[0013] According to some embodiments of this application, the number of the first fans is at least two, and the extension direction of the line connecting the shafts of the at least two first fans is intersected with the arrangement direction of the two ends of the first heat exchange channel.

[0014] According to some embodiments of this application, the heat exchange device includes a third partition plate disposed between two adjacent first fans.

[0015] According to some embodiments of this application, the heat exchange device includes a first partition plate disposed in the first chamber, the first partition plate dividing the first chamber into a first sub-chamber and a second sub-chamber, the first sub-chamber and the second sub-chamber respectively communicating with both ends of the first heat exchange channel.

[0016] According to some embodiments of this application, the heat exchange device includes a second partition plate disposed in the second chamber, the second partition plate dividing the second chamber into a third sub-chamber and a fourth sub-chamber, the third sub-chamber and the fourth sub-chamber respectively communicating with both ends of the second heat exchange channel.

[0017] According to some embodiments of this application, the first fan is disposed in the first sub-cavity, and the first partition includes a first sub-partition, a second sub-partition, and a third sub-partition connected in sequence. The first sub-partition is located on the side of the third sub-partition close to the first fan along the arrangement direction of the first sub-cavity and the second sub-cavity.

[0018] According to some embodiments of this application, a heat dissipation vent is provided on the cavity wall above the second sub-cavity.

[0019] According to some embodiments of this application, the direction of the first airflow is opposite to the direction of the second airflow.

[0020] According to some embodiments of this application, the first heat exchange channel includes at least two first sub-channels, and the at least two first sub-channels are arranged at intervals along a direction intersecting the extension direction of the first heat exchange channel. The second heat exchange channel includes at least two second sub-channels, and the at least two second sub-channels are arranged at intervals along a direction intersecting the extension direction of the second heat exchange channel. The first sub-channels and the second sub-channels are arranged alternately.

[0021] The energy storage system according to a second aspect embodiment of this application includes:

[0022] The heat exchange device according to any of the foregoing embodiments;

[0023] An energy storage device is provided, wherein the heat exchanger and the second fan are both disposed inside the energy storage device, and the first fan is disposed outside the energy storage device, so that the heat exchanger can dissipate heat from the energy storage device.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the heat exchange device in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the assembly of the heat exchange body and the first fan in one embodiment of this application. Figure 1 and Figure 2 The same perspective;

[0028] Figure 3 This is a schematic diagram of the assembly of the heat exchange body and the second fan in one embodiment of this application. Figure 3 and Figure 4 The same perspective;

[0029] Figure 4 This is a schematic diagram of the structure of the heat exchanger body in one embodiment of this application;

[0030] Figure 5 This is a schematic diagram showing the flow directions of the first airflow and the second airflow in one embodiment of this application.

[0031] Figure label:

[0032] 100. Heat exchange device; 1. Heat exchange body; 11. First heat exchange channel; 11a. First airflow; 111. First sub-channel; 12. Second heat exchange channel; 12a. Second airflow; 2. First fan; 3. Second fan; 4. Outer shell; 41. First chamber; 411. First sub-chamber; 411a. Air inlet; 412. Second sub-chamber; 412a. Heat dissipation outlet; 42. Second chamber; 421. Third sub-chamber; 422. Fourth sub-chamber; 5. First partition; 51. First sub-partition; 52. Second sub-partition; 53. Third sub-partition; 6. Second partition; 7. Third partition; 8. Flange. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0037] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] In related technologies, liquid cooling devices typically include a fan, water pump, inlet and outlet water piping system, and radiator, with the coolant supplied by an energy storage device. The inlet and outlet of the liquid cooling device require additional piping to connect to the energy storage device, making the structure complex, consequently lowering its reliability, and hindering manufacturing and maintenance. Furthermore, the coolant in liquid cooling devices is usually water or ethylene glycol; leaks of water or ethylene glycol can easily lead to shutdowns or even fires in the energy storage device. While fluorinated refrigerant cooling devices offer higher reliability, their energy consumption is also higher. Air-cooled cooling devices create convection within the energy storage device to dissipate heat to the outside, but the smaller heat dissipation area results in lower cooling efficiency.

[0039] In view of this, this application provides a heat exchange device 100 for heat dissipation of an energy storage device. The heat exchange device 100 has a first heat exchange channel 11 and a second heat exchange channel 12 that are independent of each other and capable of conducting heat to each other. Under the action of the first fan 2, the outside air with a lower temperature can form a first airflow 11a in the first heat exchange channel 11. Under the action of the second fan 3, the air with a higher temperature inside the energy storage device can form a second airflow 12a in the second heat exchange channel 12. The first airflow 11a and the second airflow 12a can exchange heat to dissipate the heat generated by the energy storage device under normal operating conditions. No liquid cooling pipes are required inside the energy storage device, and the heat exchange device 100 does not need to have inlet and outlet water pipes connected to the liquid cooling pipes of the energy storage device, making the structure of the heat exchange device 100 of this application relatively simple and highly reliable. Both ends of the first heat exchange channel 11 are connected to the outside, allowing the first heat exchange channel 11 to be approximately shaped like... Figure 5 The U-shape shown extends the length of the first heat exchange channel 11, and both ends of the second heat exchange channel 12 are connected to the inner side of the energy storage device, so that the second heat exchange channel 12 can be roughly shaped like... Figure 5 The U-shape shown extends the length of the second heat exchange channel 12. The relatively long lengths of both the first heat exchange channel 11 and the second heat exchange channel 12 are beneficial for increasing the heat exchange area within the heat exchange body 1, thereby improving the heat exchange efficiency of the heat exchange device 100.

[0040] Specifically, the heat exchange device 100 includes a heat exchange body 1, a first fan 2, and a second fan 3. Figure 2 and Figure 3 This is a schematic diagram of the assembly of the first fan 2, the second fan 3, and the heat exchange body 1. The heat exchange body 1 has two independent heat exchange channels: a first heat exchange channel 11 and a second heat exchange channel 12. The first fan 2 forms a first airflow 11a within the first heat exchange channel 11, and the second fan 3 forms a second airflow 12a within the second heat exchange channel 12. The first heat exchange channel 11 is at least partially heat-conducting with the second heat exchange channel 12, allowing heat exchange between the first airflow 11a and the second airflow 12a. The first heat exchange channel 11 can be at least partially in close contact with the second heat exchange channel 12, allowing for relatively direct heat exchange between the first airflow 11a and the second airflow 12a. Alternatively, the first heat exchange channel 11 and the second heat exchange channel 12 can be spaced apart, with a thermally conductive material placed between them to facilitate heat exchange. For example, the first heat exchange channel 11 and the second heat exchange channel 12 are both made of aluminum foil. The first heat exchange channel 11 and the second heat exchange channel 12 are separated by aluminum foil so that the first airflow 11a can exchange heat with the second airflow 12a through the aluminum foil. The heat exchange device 100 of this embodiment uses air heat exchange, so that there is no need to install liquid cooling pipelines in the energy storage device, and there is no need to install inlet and outlet water pipelines connected to the liquid cooling pipelines of the energy storage device. As a result, the structure of the heat exchange device 100 is relatively simple and the reliability is high.

[0041] Both ends of the first heat exchange channel 11 are connected to the outside, and both ends of the second heat exchange channel 12 are connected to the inside of the energy storage device. On the one hand, this allows both the first heat exchange channel 11 and the second heat exchange channel 12 to be approximately U-shaped, thereby extending their lengths. The relatively long lengths of both the first heat exchange channel 11 and the second heat exchange channel 12 are beneficial for increasing the heat exchange area within the heat exchange body 1, thus improving the heat exchange efficiency of the heat exchange device 100. On the other hand, the first airflow 11a enters from the end of the first heat exchange channel 11 connected to the outside and exits from the other end, preventing outside air from entering the interior of the energy storage device. This reduces the possibility of impurities in the outside air entering the interior of the energy storage device and helps maintain the normal and stable operation of the energy storage device.

[0042] For example, under the action of the first fan 2, the cooler outside air enters the heat exchange body 1 from one end of the first heat exchange channel 11 to form a first airflow 11a. Under the action of the second fan 3, the warmer air inside the energy storage device enters the heat exchange body 1 from one end of the second heat exchange channel 12 to form a second airflow 12a. The first airflow 11a and the second airflow 12a exchange heat in the heat exchange body 1 through the independent and mutually heat-conducting first heat exchange channel 11 and the second heat exchange channel 12, so that the heat generated by the energy storage device under normal use is discharged to the outside through the other end of the first heat exchange channel 11 after exchanging heat with the second airflow 12a. The second airflow 12a, cooled by the first airflow 11a, is discharged back into the interior of the energy storage device through the other end of the second heat exchange channel 12 to reduce the temperature inside the energy storage device.

[0043] In one embodiment, please refer to Figure 2 Figure 3 The heat exchange device 100 includes a housing 4, which can be made of metal or a material with a certain strength. The housing 4 has two independent chambers: a first chamber 41 and a second chamber 42. The heat exchange body 1 is disposed within the housing 4. This serves two purposes: firstly, it protects the heat exchange body 1, improving its resistance to external forces and thus extending its service life; secondly, it facilitates the connection of the heat exchange body 1 to the energy storage device via the housing 4. The heat exchange body 1 is positioned between the first chamber 41 and the second chamber 42. The first chamber 41 is connected to both ends of the first heat exchange channel 11, meaning it can communicate with the outside world. The second chamber 42 is connected to both ends of the second heat exchange channel 12, meaning the first chamber 41 can communicate with the inside of the energy storage device. The first fan 2 is disposed in the first chamber 41. On the one hand, the cavity wall of the first chamber 41 can protect the first fan 2 and improve its service life. On the other hand, disposing of the first fan 2 in the limited space of the first chamber 41 helps to concentrate the airflow generated by the first fan 2, thereby increasing the flow rate of the first airflow 11a generated by the first fan 2 in the first heat exchange channel 11, and thus improving the heat exchange efficiency of the heat exchange device 100. The second fan 3 is disposed in the second chamber 42. On the one hand, the cavity wall of the second chamber 42 can protect the second fan 3 and improve its service life. On the other hand, disposing of the second fan 3 in the limited space of the second chamber 42 helps to concentrate the airflow generated by the second fan 3, thereby increasing the flow rate of the second airflow 12a generated by the second fan 3 in the second heat exchange channel 12, and thus improving the heat exchange efficiency of the heat exchange device 100.

[0044] For example, please refer to Figures 1-3The heat exchange device 100 also includes a flange 8, which surrounds the outer periphery of the outer shell 4 and is used to connect the outer shell 4 to the energy storage device. The second fan 3 and the heat exchange body 1 are embedded within the energy storage device, while the first fan 2 is located outside the energy storage device.

[0045] It is understood that the heat exchange device 100 is not limited to including the outer casing 4. Exemplarily, the heat exchange body 1 can be directly connected to the energy storage device, the first fan 2 is disposed outside the energy storage device, and the second fan 3 is disposed inside the energy storage device.

[0046] In one embodiment, please refer to Figure 1 and Figure 2 The number of first fans 2 is at least two, to increase the flow rate of the first airflow 11a generated by the first fans 2 within the first heat exchange channel 11. The extension direction of the line connecting the axes of the at least two first fans 2 intersects with the arrangement direction of the two ends of the first heat exchange channel 11, such that the at least two first fans 2 are arranged as follows: Figure 2 The oblique arrangement shown allows the dimensions of the first chamber 41 to remain unchanged in the direction intersecting the arrangement directions at both ends of the first heat exchange channel 11. This helps to reduce the dimensions occupied by at least two first fans 2 in the arrangement direction at both ends of the first heat exchange channel 11, thereby reducing the volume of the first chamber 41 and reducing the space occupied by the heat exchange device 100 in the internal space of the energy storage device.

[0047] It is understood that the number of first fans 2 is not limited to at least two, and the number of first fans 2 can also be one. The extension direction of the line connecting the axes of at least two first fans 2 is not limited to intersecting with the arrangement direction of the two ends of the first heat exchange channel 11, and the extension direction of the line connecting the axes of at least two first fans 2 can also be parallel to the arrangement direction of the two ends of the first heat exchange channel 11.

[0048] In one embodiment, please refer to Figure 2 The heat exchange device 100 includes a third partition 7, which is disposed between two adjacent first fans 2 to reduce the possibility of crossflow of airflow generated by the two adjacent first fans 2, thereby reducing the possibility of airflow attenuation generated by the two adjacent first fans 2 and improving the heat exchange efficiency of the heat exchange device 100.

[0049] It is understood that the heat exchange device 100 is not limited to including the third partition 7.

[0050] In one embodiment, please refer to Figure 2 and Figure 3 The heat exchange device 100 includes a first partition 5, which is disposed in the first chamber 41 and divides the first chamber 41 into a first sub-chamber 411 and a second sub-chamber 412. The first fan 2 can be used as follows: Figure 2As shown, the first fan 2 is disposed in the first sub-cavity 411, and the second fan 2 can also be disposed in the second sub-cavity 412. The first sub-cavity 411 and the second sub-cavity 412 are respectively connected to the two ends of the first heat exchange channel 11, so that the first airflow 11a with a lower temperature flowing in from one end of the first heat exchange channel 11 is separated from the first airflow 11a with a higher temperature flowing out from the other end of the first heat exchange channel 11. This helps to reduce the possibility of the first airflow 11a flowing between the two ends of the first heat exchange channel 11, thereby enabling the first airflow 11a to dissipate the heat in the energy storage device to the outside more smoothly.

[0051] The heat exchanger 100 includes a second partition 6 disposed within the second chamber 42, dividing the second chamber 42 into a third sub-chamber 421 and a fourth sub-chamber 422. A second fan 3 can be disposed within the second chamber 42. Figure 3 The third sub-cavity 421 shown, and the second fan 3 can also be set in the fourth sub-cavity 422. The third sub-cavity 421 and the fourth sub-cavity 422 are respectively connected to both ends of the second heat exchange channel 12, so that the second airflow 12a with a higher temperature flowing in from one end of the second heat exchange channel 12 is separated from the second airflow 12a with a lower temperature flowing out from the other end of the second heat exchange channel 12. This helps to reduce the possibility of the second airflow 12a flowing back and forth between the two ends of the second heat exchange channel 12, thereby enabling the second airflow 12a to transport the cold energy from the outside to the inside of the energy storage device more smoothly, so as to improve the heat exchange efficiency of the heat exchange device 100.

[0052] For example, please refer to Figure 2 and Figure 3 The first fan 2 is located in the first sub-cavity 411. The first fan 2 is used to compress the outside air with a lower temperature into one end of the first heat exchange channel 11 to form a first airflow 11a. The second fan 3 is located in the third sub-cavity 421. The second fan 3 is used to draw the air with a higher temperature inside the energy storage device into the second heat exchange channel 12 to form a second airflow 12a. After the lower temperature first airflow 11a and the higher temperature second airflow 12a exchange heat, the higher temperature first airflow 11a is discharged to the outside from the other end of the first heat exchange channel 11, and the lower temperature second airflow 12a returns to the energy storage device to exchange the heat generated inside the energy storage device and dissipate heat from the energy storage device.

[0053] It is understood that the heat exchange device 100 is not limited to including the first partition 5 and the second partition 6.

[0054] In one embodiment, please refer to Figure 2The first fan 2 is disposed in the first sub-cavity 411. The first partition 5 includes a first sub-partition 51, a second sub-partition 52, and a third sub-partition 53 connected in sequence. The first sub-partition 51 is located on the side of the third sub-partition 53 closer to the first fan 2 along the arrangement direction of the first sub-cavity 411 and the second sub-cavity 412, so that the first partition 5 is approximately shaped like... Figure 2 The stepped shape shown means that the third sub-partition 53 is located on the side of the first sub-partition 51 away from the first fan 2 along the arrangement direction of the first sub-cavity 411 and the second sub-cavity 412, so as to increase the volume of the first sub-cavity 411, thereby reducing the wind resistance of the airflow generated by the first fan 2, increasing the flow rate of the first airflow 11a, and improving the heat exchange efficiency of the heat exchange device 100.

[0055] It is understood that the first partition 5 is not limited to including the first sub-partition 51, the second sub-partition 52 and the third sub-partition 53 connected in sequence, and the first partition 5 is also a flat plate.

[0056] In one embodiment, please refer to Figure 1 A heat dissipation vent 412a is provided on the cavity wall above the second sub-cavity 412. A first fan 2 is disposed in the first sub-cavity 411. The first fan 2 is used to compress the outside air with a lower temperature into the first heat exchange channel 11 to form a first airflow 11a. After the lower temperature first airflow 11a exchanges heat with the higher temperature second airflow 12a in the heat exchange body 1, the first airflow 11a flowing out from the other end of the first heat exchange channel 11 connected to the second sub-cavity 412 has a higher temperature. The higher temperature first airflow 11a has a lower density, and under the action of atmospheric pressure, the first airflow 11a has a tendency to move upward. The heat dissipation vent 412a is provided on the cavity wall above the second sub-cavity 412 so that the higher temperature first airflow 11a can be discharged from the second sub-cavity 412 more smoothly, which is beneficial to improving the heat exchange efficiency of the heat exchange device 100.

[0057] It is understood that the second sub-cavity 412 is not limited to having a heat dissipation vent 412a on the upper cavity wall. For example, a heat dissipation vent 412a can be formed on the cavity wall at one end of the second sub-cavity 412 relative to the first heat exchange channel 11.

[0058] For example, please refer to Figure 1 An air inlet 411a is provided on the cavity wall at one end of the first sub-cavity 411 relative to the first heat exchange channel 11. The number of air inlets 411a corresponds one-to-one with the number of first fans 2. Both the air inlets 411a and the heat dissipation outlets 412a are covered with honeycomb-shaped dustproof nets to reduce the possibility of dust in the air clogging the first heat exchange channel 11.

[0059] In one embodiment, please refer to Figure 5The flow direction of the first airflow 11a is opposite to that of the second airflow 12a, which allows the first airflow 11a to exchange heat with the second airflow 12a in a more sufficient manner in the form of convection, which is beneficial to improving the heat exchange efficiency of the heat exchange device 100.

[0060] It is understandable that the direction of the first airflow 11a can be the same as the direction of the second airflow 12a.

[0061] In one embodiment, please refer to Figure 4 The first heat exchange channel 11 includes at least two first sub-channels 111, which are arranged at intervals along a direction intersecting the extension direction of the first heat exchange channel 11. The second heat exchange channel 12 includes at least two second sub-channels, which are arranged at intervals along a direction intersecting the extension direction of the second heat exchange channel 12. The first sub-channels 111 and the second sub-channels are arranged alternately to increase the heat exchange area between the first heat exchange channel 11 and the second heat exchange channel 12, which is beneficial to improving the heat exchange efficiency between the first heat exchange channel 11 and the second heat exchange channel 12.

[0062] The second aspect of this application provides an energy storage system, including a heat exchange device 100 and an energy storage device. The heat exchange body 1 and the second fan 3 are both disposed inside the energy storage device, and the first fan 2 is disposed outside the energy storage device, so that the heat exchange device 100 can dissipate heat from the energy storage device and also reduce the space occupied by the heat exchange device 100 inside the energy storage device.

[0063] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A heat exchange device for heat dissipation in an energy storage device, characterized in that, include: The heat exchanger body has a first heat exchange channel and a second heat exchange channel that are independent of each other. Both ends of the first heat exchange channel are connected to the outside, and both ends of the second heat exchange channel are connected to the inside of the energy storage device. The first fan is used to generate a first airflow within the first heat exchange channel; The second fan is used to generate a second airflow within the second heat exchange channel; The first heat exchange channel is at least partially capable of conducting heat with the second heat exchange channel, so that the first airflow and the second airflow exchange heat.

2. The heat exchange device according to claim 1, characterized in that, The heat exchange device includes a shell, which has a first chamber and a second chamber that are independent of each other. The heat exchange body is disposed inside the shell and between the first chamber and the second chamber. The first chamber is connected to both ends of the first heat exchange channel, and the second chamber is connected to both ends of the second heat exchange channel. The first fan is disposed in the first chamber, and the second fan is disposed in the second chamber.

3. The heat exchange device according to claim 2, characterized in that, The number of the first fans is at least two, and the extension direction of the line connecting the axes of the at least two first fans is intersected with the arrangement direction of the two ends of the first heat exchange channel.

4. The heat exchange device according to claim 3, characterized in that, The heat exchange device includes a third partition plate, which is disposed between two adjacent first fans.

5. The heat exchange device according to claim 2, characterized in that, The heat exchange device includes a first partition plate disposed in the first chamber, which divides the first chamber into a first sub-chamber and a second sub-chamber. The first sub-chamber and the second sub-chamber are respectively connected to both ends of the first heat exchange channel, and / or. The heat exchange device includes a second partition plate disposed in the second chamber, which divides the second chamber into a third sub-chamber and a fourth sub-chamber, respectively. The third sub-chamber and the fourth sub-chamber are respectively connected to both ends of the second heat exchange channel.

6. The heat exchange device according to claim 5, characterized in that, The first fan is disposed in the first sub-cavity, and the first partition includes a first sub-partition, a second sub-partition, and a third sub-partition connected in sequence. The first sub-partition is located on the side of the third sub-partition closer to the first fan along the arrangement direction of the first sub-cavity and the second sub-cavity.

7. The heat exchange device according to claim 5, characterized in that, The cavity wall above the second sub-cavity has a heat dissipation vent.

8. The heat exchange device according to any one of claims 1 to 7, characterized in that, The direction of the first airflow is opposite to the direction of the second airflow.

9. The heat exchange device according to any one of claims 1 to 7, characterized in that, The first heat exchange channel includes at least two first sub-channels, which are arranged at intervals along a direction intersecting the extension direction of the first heat exchange channel. The second heat exchange channel includes at least two second sub-channels, which are arranged at intervals along a direction intersecting the extension direction of the second heat exchange channel. The first sub-channels and the second sub-channels are arranged alternately.

10. An energy storage system, characterized in that, include: The heat exchange device according to any one of claims 1 to 9; An energy storage device is provided, wherein the heat exchanger and the second fan are both disposed inside the energy storage device, and the first fan is disposed outside the energy storage device, so that the heat exchanger can dissipate heat from the energy storage device.

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