Energy storage cabinet

Abstract

The embodiment of the invention relates to the technical field of energy storage, in particular to an energy storage cabinet. The fan aims at solving the problems that the power consumption of the fan is large, the speed of airflow entering the fan is not uniform, and the noise of the fan is large. The embodiment of the invention provides an energy storage cabinet which comprises a cabinet, the cabinet comprises a cabinet body and a cabinet door, and a first surface, away from the cabinet body, of the cabinet door is provided with a first through hole and a second through hole which penetrate through the first surface. The projection of the air inlet of the fan and the projection of the heat exchanger on the first surface are overlapped with the first through hole, the fan and the heat exchanger are arranged in the thickness direction of the cabinet body, the air inlet of the fan faces the heat exchanger, airflow enters and penetrates through the heat exchanger from the first through hole, the airflow does not need to be turned and can directly enter the fan, and the work of the fan on the airflow is reduced. The power consumption of the fan can be reduced, so that the noise of the fan is reduced. The airflow moves under the action of the fan, so that the flow velocity of the airflow entering the fan is more uniform, and the flow velocity of the airflow entering the heat exchanger can be ensured to be more uniform.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of energy storage technology, and specifically to an energy storage cabinet. Background Art

[0002] The energy storage cabinet includes a cabinet, a heat exchanger and a fan. The cabinet includes a cabinet body and a cabinet door for covering the cabinet body. The cabinet door is surrounded by a receiving cavity. The first surface of the cabinet door facing away from the cabinet body is provided with a first through hole and a second through hole penetrating the first surface. The first through hole and the second through hole are arranged along a first direction. The heat exchanger is located in the receiving cavity and is arranged close to the first through hole. The surface where the air outlet of the heat exchanger is located is parallel to the first through hole. The fan is located in the receiving cavity and is arranged close to the second through hole. The surface where the air inlet of the fan is located is parallel to the second through hole. Under the action of the fan, the airflow can enter from the first through hole, pass through the heat exchanger and move from the air outlet of the heat exchanger to the air inlet of the fan, then pass through the fan, and finally leave from the second through hole. Since the surface where the air outlet of the heat exchanger is located is parallel to the first through hole, and the surface where the air inlet of the fan is located is parallel to the second through hole, the airflow needs to turn 180° when moving from the heat exchanger to the fan. The fan does a lot of work on the airflow, resulting in a large power consumption of the fan and uneven speed of the airflow when entering the fan, which leads to a large noise from the fan. Summary of the invention

[0003] The embodiment of the present application provides an energy storage cabinet, which can reduce the power consumption of the fan and improve the uniformity of the speed of the airflow when entering the fan, thereby reducing the noise of the fan.

[0004] In a first aspect, an embodiment of the present application provides an energy storage cabinet, comprising a cabinet, a heat exchanger and a fan, wherein the cabinet comprises a cabinet body and a cabinet door for covering the cabinet body, the cabinet door is provided with a accommodating cavity, and a first surface of the cabinet door facing away from the cabinet body is provided with a first through hole and a second through hole penetrating the first surface, the first through hole and the second through hole are arranged along a first direction, and in the first direction, the first through hole is provided on a side of the second through hole away from the top end of the cabinet door.

[0005] The heat exchanger is located in the accommodating cavity, the fan is located in the accommodating cavity, the fan and the heat exchanger are arranged along the second direction, along the second direction, the air inlet of the fan and the projection of the heat exchanger on the first surface overlap with the first through hole, the air inlet of the fan is arranged toward the heat exchanger, and the air outlet of the fan is toward the top of the cabinet door. The first direction is the height direction of the cabinet, and the second direction is the thickness direction of the cabinet.

[0006] The fan and the heat exchanger are arranged along the thickness direction of the cabinet, and the air inlet of the fan is set toward the heat exchanger. The airflow enters from the first through hole and passes through the heat exchanger. The airflow does not need to turn and can directly enter the fan. The work done by the fan on the airflow is reduced, which can reduce the power consumption of the fan and thus reduce the noise of the fan.

[0007] In addition, since the airflow moves under the action of the fan, the flow velocity of the airflow when entering the fan is more uniform, which can ensure that the flow velocity of the airflow when entering the heat exchanger is more uniform, which can reduce the equivalent flow resistance at the heat exchanger and improve the equivalent performance of the fan at the same speed. At the same time, the flow velocity of the airflow when entering the fan is more uniform, which can reduce the noise of the fan.

[0008] In some embodiments which may include the above embodiments, along the second direction, a projection of the fan on the first surface does not overlap with the second through hole.

[0009] The height of the fan is lower than the second through hole, ensuring that most of the airflow entering the fan comes from the heat exchanger rather than the airflow in other spaces inside the cabinet door, thereby ensuring that the airflow passing through the heat exchanger can leave from the second through hole to achieve a heat exchange effect.

[0010] In some embodiments that may include the above embodiments, the heat exchanger is parallel to the first surface, and the surface where the air inlet of the fan is located is parallel to the first surface.

[0011] The surfaces where the air inlets of the heat exchanger and the fan are located are parallel to the first surface. The airflow does not need to turn and can directly pass through the heat exchanger and enter the fan. The flow rate of the airflow is more uniform, which can ensure that the equivalent flow resistance of the airflow passing through the heat exchanger is smaller. The equivalent performance of the fan at the same speed is improved, which reduces the power consumption of the fan and thus reduces the noise of the fan.

[0012] In some embodiments that may include the above embodiments, the heat exchanger is attached to the first surface, the fan and the cabinet door are attached to the second surface close to the cabinet body, and the second surface and the first surface are arranged along the second direction.

[0013] The heat exchanger is attached to the first surface and the fan is attached to the second surface, which can increase the distance between the heat exchanger and the fan, so that the airflow leaving the heat exchanger can have sufficient space to mix before entering the fan, making the flow velocity of the airflow when entering the fan more uniform, thereby reducing the noise of the fan.

[0014] In some embodiments that may include the above embodiments, the distance between the fan and the top end of the cabinet door in the first direction is greater than one tenth of the size of the fan in the first direction.

[0015] The larger the diameter of the fan, the greater the air volume and the greater the wind pressure at the air outlet. There is a certain distance between the fan and the top of the cabinet door to prevent the airflow from being restricted between the fan and the cabinet door after leaving the fan, ensuring that the airflow can flow to the second through hole.

[0016] In some embodiments that may include the above-mentioned embodiments, the cabinet door includes a first surface and a second surface arranged along a second direction, and a third surface and a fourth surface arranged along the first direction, the third surface is connected between the top end of the first surface and the top end of the second surface, the fourth surface is connected between the bottom end of the first surface and the bottom end of the second surface, and the first surface is arranged on the side of the second surface away from the cabinet body.

[0017] The energy storage cabinet also includes an air guide plate, which is arranged in the accommodating cavity, one end of the air guide plate is connected to the third surface, and the other end of the air guide plate is connected to the second surface. In the first direction, the other end of the air guide plate is located between the air outlet of the fan and the third surface.

[0018] One end of the air guide plate is connected to the third surface, and the other end of the air guide plate is connected to the second surface. In the first direction, the other end of the air guide plate is located between the air outlet of the fan and the third surface, that is, the air guide plate is located between the air outlet of the fan and the top of the cabinet door. The air guide plate can guide the airflow so that the airflow flows from the air outlet of the fan to the second through hole, reducing the friction between the airflow and the cabinet door, thereby reducing the flow resistance of the airflow, ensuring the flow rate of the airflow, reducing the power consumption of the fan, and ensuring the normal use of the fan.

[0019] In some embodiments that may include the above embodiments, in a direction from the top end of the cabinet door to the bottom end of the cabinet door, a distance between the air guide plate and the second surface in the second direction becomes smaller.

[0020] The distance between the air guide plate and the second surface in the second direction becomes smaller, that is, the air guide plate is inclined relative to the second surface in a direction close to the first surface, which facilitates guiding the airflow from the air outlet of the fan to the second through hole, thereby reducing the flow resistance of the airflow, reducing the power consumption of the fan, and ensuring the normal use of the fan.

[0021] In some embodiments that may include the above embodiments, a sound absorbing material is disposed in the space enclosed by the air guide plate, the third surface, and the second surface.

[0022] When noise enters the pores of the sound-absorbing material, it will be subjected to friction from air molecules and viscous resistance, causing the sound-absorbing material to vibrate mechanically, converting the noise into heat energy, thereby reducing the noise. The sound-absorbing material is arranged in the space surrounded by the air guide plate, the third surface and the second surface. The sound-absorbing material does not need to occupy additional space inside the cabinet door, which can save space inside the cabinet door while reducing the noise of the fan. In addition, the sound-absorbing material has little effect on the airflow, almost no effect, which can ensure the flow rate of the airflow, ensure the heat exchange effect of the heat exchanger, and at the same time avoid the increase of the power consumption of the fan, ensuring the normal operation of the fan.

[0023] In some embodiments that may include the above embodiments, the energy storage cabinet further includes a muffler, and the muffler is disposed on the air inlet or outlet of the fan.

[0024] The muffler has little effect on the air volume and can reduce the noise of the fan while ensuring the air volume of the fan, thereby ensuring the heat dissipation effect of the heat exchanger.

[0025] In some embodiments that may include the above embodiments, there are multiple fans, and the multiple fans are arranged along a third direction, wherein the third direction is the length direction of the cabinet.

[0026] The number of fans is multiple, which can reduce the processing difficulty and processing cost of the fans while ensuring the air volume. The fans are arranged along the third direction to ensure that the thickness of the cabinet door is small, ensuring that the fans have little impact on the equipment in the cabinet.

[0027] In some embodiments that may include the above embodiments, the energy storage cabinet further includes a cooling device, the heat exchanger includes a pipeline and a heat dissipation fin, the heat dissipation fin is located on one side of the pipeline, and the first opening of the pipeline and the second opening of the pipeline are both connected to the cooling device;

[0028] The heat exchanger is used to receive the coolant from the cooling device through the first opening of the pipeline; the heat exchanger is also used to transport the coolant in the heat exchanger to the cooling device through the second opening of the pipeline.

[0029] The cooling device is used to cool the heat generating device. The coolant absorbs the heat of the heat generating device and heats up. The heated coolant can enter the pipeline through the first opening, and the coolant transfers the heat to the pipeline. A heat sink fin is provided on one side of the pipeline. The airflow passing through the heat sink fin can take away the heat on the pipeline, so that the pipeline can continuously absorb the heat of the coolant. The temperature of the coolant decreases, and the coolant can return to the cooling device from the second opening through the pipeline and continue to be used to cool the heat generating device.

[0030] In the second aspect, an embodiment of the present application also provides an energy storage cabinet, including a cabinet, a heat exchanger and a fan, the cabinet including a cabinet body and a cabinet door for covering the cabinet body, the cabinet door is surrounded by a accommodating cavity, and the first surface of the cabinet door facing away from the cabinet body is provided with a first through hole and a second through hole penetrating the first surface, the first through hole and the second through hole are arranged along a first direction, and in the first direction, the first through hole is arranged on the side of the second through hole away from the top of the cabinet door.

[0031] The heat exchanger is located in the accommodating cavity, and the projection of the heat exchanger on the first surface overlaps with the first through hole. The fan is located in the accommodating cavity, and in the first direction, the fan is arranged on the side of the heat exchanger close to the top of the cabinet door, and in the second direction, the fan is arranged on the side of the heat exchanger close to the cabinet body, the air inlet of the fan faces the bottom of the cabinet door, and the air outlet of the fan faces the first surface or the top of the cabinet door. The first direction is the height direction of the cabinet body, and the second direction is the thickness direction of the cabinet body.

[0032] The projection of the heat exchanger on the first surface overlaps with the first through hole, and the airflow can enter the heat exchanger through the first through hole. In the first direction, the fan is arranged on the side of the heat exchanger close to the top of the cabinet door, and in the second direction, the fan is arranged on the side of the heat exchanger close to the cabinet body, and the air inlet of the fan faces the bottom of the cabinet door, that is, the airflow leaves the heat exchanger and turns less when entering the fan, and the fan does less work on the airflow, which can reduce the power consumption of the fan. At the same time, due to the smaller turning of the airflow, the flow velocity of the airflow when entering the fan is more uniform, that is, the uniformity of the flow velocity of the airflow entering the fan is improved, which can reduce the noise of the fan.

[0033] In some embodiments, which may include those described above, the heat exchanger is parallel to the first surface.

[0034] The heat exchanger is parallel to the first surface, and the airflow can directly enter the heat exchanger without turning. The flow rate of the airflow is more uniform, which can ensure that the equivalent flow resistance of the airflow when entering the heat exchanger is smaller, thereby reducing the power consumption of the fan and thus reducing the noise of the fan.

[0035] In some embodiments that may include the above embodiments, the heat exchanger is attached to the first surface, the fan is perpendicular to the second surface of the cabinet door, and the second surface and the first surface are arranged along the second direction.

[0036] The heat exchanger is attached to the first surface, which can increase the space between the heat exchanger and the fan, so that the airflow leaving the heat exchanger can have sufficient space to mix before entering the fan, ensuring that the flow rate of the airflow entering the fan is more uniform, reducing the power consumption of the fan, and thus reducing the noise of the fan. The heat exchanger is attached to the first surface, and the fan is perpendicular to the second surface of the cabinet door. At this time, the airflow from the heat exchanger to the fan needs to turn 90 degrees, and the airflow turning is small, which can reduce the power consumption of the fan, thereby reducing the noise of the fan.

[0037] In some embodiments that may include the above embodiments, the cabinet door includes a first surface and a second surface arranged along the second direction, and a third surface and a fourth surface arranged along the first direction, the third surface is connected between the top of the first surface and the top of the second surface, the fourth surface is connected between the bottom of the first surface and the bottom of the second surface, and the first surface is arranged on a side of the second surface away from the cabinet body. The energy storage cabinet also includes an air guide plate, which is arranged in the accommodating cavity, one end of the air guide plate is connected to the third surface, and the other end of the air guide plate is connected to the second surface, and in the first direction, the other end of the air guide plate is located between the air outlet of the fan and the third surface.

[0038] One end of the air guide plate is connected to the third surface, and the other end of the air guide plate is connected to the second surface. In the first direction, the other end of the air guide plate is located between the air outlet of the fan and the third surface, that is, the air guide plate is located between the air outlet of the fan and the top of the cabinet door. The air guide plate can guide the airflow so that the airflow flows from the air outlet of the fan to the second through hole, reducing the friction between the airflow and the cabinet door, thereby reducing the flow resistance of the airflow, ensuring the flow rate of the airflow, reducing the power consumption of the fan, and ensuring the normal use of the fan.

[0039] In some embodiments that may include the above embodiments, a sound absorbing material is disposed in the space enclosed by the air guide plate, the third surface, and the second surface.

[0040] When noise enters the pores of the sound-absorbing material, it will be subjected to friction from air molecules and viscous resistance, causing the sound-absorbing material to vibrate mechanically, converting the noise into heat energy, thereby reducing the noise. The sound-absorbing material is arranged in the space surrounded by the air guide plate, the third surface and the second surface. The sound-absorbing material does not need to occupy additional space inside the cabinet door, which can save space inside the cabinet door while reducing the noise of the fan. In addition, the sound-absorbing material has little effect on the airflow, almost no effect, which can ensure the flow rate of the airflow, ensure the heat exchange effect of the heat exchanger, and at the same time avoid the increase of the power consumption of the fan, ensuring the normal operation of the fan.

[0041] In some embodiments that may include the above embodiments, there is an angle between the heat exchanger and the first surface, the first end of the heat exchanger contacts the first surface, and the second end of the heat exchanger contacts the fourth surface.

[0042] There is an angle between the heat exchanger and the first surface, the first end of the heat exchanger contacts the first surface, and the second end contacts the fourth surface, that is, the heat exchanger is tilted, and the air outlet of the heat exchanger faces the air inlet of the fan and the second surface. The tilted setting of the heat exchanger can increase the heat exchange area of ​​the heat exchanger and improve the heat exchange efficiency of the heat exchanger. The air outlet of the heat exchanger faces the air inlet of the fan and the second surface, which can ensure that the airflow leaving the heat exchanger can enter the fan, ensuring the heat exchange effect of the heat exchanger.

[0043] In a third aspect, an embodiment of the present application further provides an energy storage cabinet, comprising a cabinet, a heat exchanger and a fan, the cabinet comprising a cabinet body and a cabinet door for covering the cabinet body, the cabinet door being provided with a accommodating cavity, and a first surface of the cabinet door facing away from the cabinet body being provided with a first through hole and a second through hole penetrating the first surface, the first through hole and the second through hole being arranged along a first direction, and in the first direction, the first through hole being provided on a side of the second through hole away from the top end of the cabinet door.

[0044] The fan is located in the accommodating cavity, the fan is located in the accommodating cavity, the projection of the fan on the first surface overlaps with the first through hole, the air outlet of the fan faces the top of the cabinet door, and the air inlet of the fan is arranged toward the first surface or the bottom of the cabinet door. The heat exchanger is located in the accommodating cavity, in the first direction, the heat exchanger is arranged on the side of the fan close to the top of the cabinet door, the projection of the heat exchanger on the first surface overlaps with the second through hole, there is an angle between the heat exchanger and the first surface, the air inlet of the heat exchanger faces the air outlet of the fan, and the air outlet of the heat exchanger faces the first surface. Among them, the first direction is the height direction of the cabinet door, and the second direction is the thickness direction of the cabinet door.

[0045] The projection of the fan on the first surface overlaps with the first through hole, and the air inlet of the fan is arranged toward the first surface or the bottom end of the cabinet door. The airflow has a smaller turning when entering the fan through the first through hole, and the flow resistance of the airflow is smaller. The flow velocity of the airflow when entering the fan is relatively uniform. The air outlet of the fan faces the air inlet of the heat exchanger. After leaving the fan, the airflow can directly enter the heat exchanger without turning. The flow resistance of the airflow when entering the heat exchanger is smaller, and the flow velocity is relatively uniform, thereby ensuring that the noise of the fan is smaller. There is an angle between the heat exchanger and the first surface, and the heat exchanger is arranged at an angle, which can ensure that the airflow from the fan can enter the heat exchanger, thereby achieving the heat exchange effect of the heat exchanger.

[0046] In some embodiments that may include the above embodiments, in the second direction, the fan is perpendicular to the first surface, one end of the fan is in contact with the first surface, and the other end of the fan is in contact with the second surface, and the first surface and the second surface are arranged along the second direction.

[0047] One end of the fan is in contact with the first surface, and the other end of the fan is in contact with the second surface, so that the area of ​​the air outlet of the fan can be increased, ensuring that the airflow can enter the heat exchanger to achieve a heat exchange effect.

[0048] In some embodiments that may include the above embodiments, the cabinet door includes a first surface and a second surface arranged along the second direction, and a third surface and a fourth surface arranged along the first direction, the third surface is connected between the top of the first surface and the top of the second surface, the fourth surface is connected between the bottom of the first surface and the bottom of the second surface, and the first surface is arranged on a side of the second surface away from the cabinet. There is an angle between the heat exchanger and the second surface, the first end of the heat exchanger contacts the second surface, and the second end of the heat exchanger contacts the fan.

[0049] The first end of the heat exchanger contacts the second surface, and the second end of the heat exchanger contacts the fan. A sealed space is formed between the air inlet of the heat exchanger and the air outlet of the fan, so that the airflow from the fan can enter the heat exchanger more conveniently and accurately. At the same time, the air outlet of the heat exchanger faces the second through hole, and the airflow passing through the heat exchanger can leave from the second through hole, thereby ensuring the heat exchange effect of the heat exchanger.

[0050] In some embodiments, which may include the above embodiments, the second end of the heat exchanger is also in contact with the first surface.

[0051] The heat exchange area of ​​the heat exchanger is large, which can increase the heat exchange rate of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 The structure of the energy storage cabinet in the related art is shown in FIG. Figure 1 ;

[0053] Figure 2 The structure of the energy storage cabinet in the related art is shown in FIG. Figure 2 ;

[0054] Figure 3 The structure of the energy storage cabinet in the related art is shown in FIG. Figure 3 ;

[0055] Figure 4 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door in the related art Figure 1 ;

[0056] Figure 5 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door in the related art Figure 2 ;

[0057] Figure 6 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door provided in the embodiment of the present application Figure 1 ;

[0058] Figure 7 A schematic diagram of the structure of a heat exchanger provided in an embodiment of the present application;

[0059] Figure 8 A schematic diagram of the structure of the internal air guide plate of the cabinet door provided in an embodiment of the present application;

[0060] Fig. 9 A schematic diagram of the structure of the interior of a cabinet door provided with sound-absorbing material according to an embodiment of the present application;

[0061] Fig.10 A schematic diagram of a cabinet door provided with a muffler in an embodiment of the present application Figure 1 ;

[0062] Fig.11 A schematic diagram of a cabinet door provided with a muffler in an embodiment of the present application Figure 2 ;

[0063] Fig.12 A schematic diagram of a cabinet door provided with a muffler in an embodiment of the present application Figure 3 ;

[0064] Fig.13A schematic diagram of a structure in which a plurality of fans are arranged inside a cabinet door provided in an embodiment of the present application;

[0065] Fig.14 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door provided in the embodiment of the present application Figure 2 ;

[0066] Fig.15 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door provided in the embodiment of the present application Figure 3 ;

[0067] Fig.16 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door provided in the embodiment of the present application Figure 4 ;

[0068] Fig.17 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door provided in the embodiment of the present application Figure 5 ;

[0069] Fig.18 Schematic diagram of the structure of the heat exchanger and fan inside the cabinet door provided in the embodiment of the present application Figure 6 .

[0070] Description of reference numerals:

[0071] 10: energy storage cabinet; 11: battery pack; 12: cooling device; 20: cabinet; 21: heat exchanger; 22: fan; 31: cabinet body; 32: cabinet door; 321: accommodating cavity; 41: first surface; 42: second surface; 43: third surface; 44: fourth surface; 50: air guide plate; 51: sound absorbing material; 52: muffler; 61: pipeline; 611: first opening of the pipeline; 612: second opening of the pipeline; 62: heat dissipation fin; 71: first header; 72: second header; 73: flat tube; 711: first cavity; 712: second cavity. DETAILED DESCRIPTION

[0072] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0073] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0074] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components placed in the drawings.

[0075] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0076] It should be noted that in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an integral connection; it can also be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0077] Please refer to Figure 1 The energy storage cabinet 10 includes a battery pack 11, a cooling device 12 and a cabinet 20. The battery pack 11 is in contact with the cooling device 12, and the cooling device 12 is connected to a heat exchanger in the cabinet 20. A coolant is provided in the cooling device 12, and the battery pack 11 is in contact with the cooling device 12. When the coolant flows through the battery pack 11, the heat of the battery pack 11 can be taken away. The coolant with heat flows into the heat exchanger, and the heat exchanger can take away the heat of the coolant. The coolant with a lowered temperature flows back to the cooling device 12, and can continue to cool the battery pack 11.

[0078] The energy storage cabinet 10 may also include a power converter, which is connected to the battery pack 11 and can convert the AC power output by the external AC power source into DC power and output it to the battery pack 11, and / or convert the DC power output by the battery pack 11 into AC power and output it to a load or a power grid. The embodiment of the present application does not limit the power converter, and illustratively, the power converter may include a rectifier, an inverter, etc.

[0079] The cabinet 20 includes a cabinet body 31 and a cabinet door 32 for covering the cabinet body 31. The battery pack 11 and the power converter are arranged in the cabinet body 31. The cabinet door 32 can seal the battery pack 11 and the power converter in the cabinet body 31 to prevent the external environment from polluting the battery pack 11 or the power converter and causing damage to the battery pack 11 or the power converter.

[0080] The first direction is Figure 1 The z direction in the Figure 1 The y direction in the Figure 1 The first direction, the second direction and the third direction in the following text are all exemplarily described in this way.

[0081] Continue to refer to Figure 1 and Figure 2 , Figure 1 The x direction is the length direction of the cabinet 31, the y direction is the thickness direction of the cabinet 31, and the z direction is the height direction of the cabinet 31. The cabinet door 32 is surrounded by a receiving cavity 321, and a first through hole 411 and a second through hole 412 penetrating the first surface 41 are provided on a first surface 41 of the cabinet door 32 away from the cabinet 31. The first through hole 411 and the second through hole 412 are arranged along a first direction z. In the first direction z, the first through hole 411 is provided on a side of the second through hole 412 away from the top of the cabinet door 32.

[0082] The first through hole 411 and the second through hole 412 are located on the same surface, so that air can enter / exit from one side, which is beneficial to the spatial layout inside the cabinet door 32 .

[0083] It can be understood that the first through hole 411 and the second through hole 412 can be two through holes spaced apart (eg Figure 2 The first through hole 411 and the second through hole 412 may also be two parts of a large through hole, the first through hole 411 may be the lower half of the large through hole, and the second through hole 412 may be the upper half of the large through hole (as shown in FIG. Figure 3 shown).

[0084] Please refer to Figure 4 and Figure 5 In the related art, the energy storage cabinet 10 ( Figure 2 The heat exchanger 21 is located in the accommodating cavity 321 and is arranged close to the first through hole 411. The surface where the air outlet of the heat exchanger 21 is located is parallel to the first through hole 411. The fan 22 is located in the accommodating cavity 321 and is arranged close to the second through hole 412. The surface where the air inlet of the fan 22 is located is parallel to the second through hole 412.

[0085] Under the action of the fan 22 , the airflow enters from the first through hole 411 , passes through the heat exchanger 21 , and exchanges heat with the heat exchanger 21 . The heated airflow passes through the fan 22 and exits from the second through hole 412 .

[0086] Since the first through hole 411 and the second through hole 412 are located on the same surface of the cabinet door 32, the airflow needs to make a 180° turn to flow from the heat exchanger 21 to the fan 22. The fan 22 does more work on the airflow, resulting in high power consumption of the fan 22, which in turn causes high noise from the fan 22.

[0087] At the heat exchanger 21, the flow velocity is greater on the side close to the fan 22, and the flow velocity near the bottom is almost 0. The greater the flow velocity, the greater the flow resistance, which increases the equivalent flow resistance at the heat exchanger 21, reduces the equivalent performance of the fan 22 at the same speed, increases the power consumption of the fan 22, and makes the fan 22 noisier.

[0088] At the same time, due to the uneven flow velocity at the heat exchanger 21, the airflow entering the fan 22 is unevenly distributed, which causes the fan 22 to produce a relatively large noise.

[0089] The fan 22 may include an axial flow fan or a diagonal flow fan. In an embodiment where the fan 22 includes an axial flow fan, the noise generated by the axial flow fan is transmitted from the air inlet and air outlet of the axial flow fan, reflected by the cabinet door 32, and the reflected noise and the noise generated by the axial flow fan itself are superimposed at the air inlet and air outlet of the axial flow fan, causing the noise of the fan 22 to become louder.

[0090] In addition, the fan 22 and the heat exchanger 21 are spaced apart along the height direction of the cabinet door 32. The air flow velocity of the part of the heat exchanger 21 close to the fan 22 is higher, and the air flow velocity of the part of the heat exchanger 21 far from the fan 22 is lower, almost 0, which will affect the heat exchange effect of the heat exchanger 21.

[0091] Please refer to Figure 6 , the energy storage cabinet 10( Figure 2 ), including a fan 22 and a heat exchanger 21. The fan 22 and the heat exchanger 21 are both arranged in the accommodating cavity 321, and the fan 22 and the heat exchanger 21 are arranged along the second direction y. Along the second direction y, the air inlet of the fan 22 and the projection of the heat exchanger 21 on the first surface 41 overlap with the first through hole 411, the air inlet of the fan 22 is arranged toward the heat exchanger 21, and the air outlet of the fan 22 is toward the top of the cabinet door 32. Among them, the first direction z is the height direction of the cabinet 31, and the second direction y is the thickness direction of the cabinet 31.

[0092] The fan 22 and the heat exchanger 21 are arranged along the second direction y, so that the fan 22 can avoid contacting the heat exchanger 21 when rotating. At the same time, the flow velocity of the airflow after flowing out of the heat exchanger 21 is uneven, and the airflow can be mixed in the space between the fan 22 and the heat exchanger 21, so that the flow velocity of the airflow when entering the fan 22 is more uniform, thereby reducing the noise of the fan 22.

[0093] It is understandable that when the airflow leaves the heat exchanger 21, it is affected by the heat exchanger 21 (for example, the airflow collides with or rubs against the heat exchanger 21), and the flow rate of the airflow changes. Mixed flow means that after the airflow leaves the heat exchanger 21 and before entering the fan 22, it mixes with the original air in the space, and during the flow process, the flow rate of the airflow gradually becomes uniform.

[0094] The fan 22 and the heat exchanger 21 are arranged along the cabinet 31 ( Figure 2 The fan 22 is arranged in the thickness direction as shown, and the air inlet of the fan 22 is set toward the heat exchanger 21. The airflow enters from the first through hole 411 and passes through the heat exchanger 21. The airflow does not need to turn and can directly enter the fan 22. The work done by the fan 22 on the airflow is reduced, which can reduce the power consumption of the fan 22, thereby reducing the noise of the fan 22.

[0095] In addition, since the airflow moves under the action of the fan 22, the flow velocity of the airflow when entering the fan 22 is more uniform, which can ensure that the flow velocity of the airflow when entering the heat exchanger 21 is more uniform, and the equivalent flow resistance at the heat exchanger 21 can be reduced, and the equivalent performance of the fan 22 at the same speed is improved. At the same time, the flow velocity of the airflow when entering the fan 22 is more uniform, which can reduce the noise of the fan 22.

[0096] In the above embodiment, along the second direction y, the projection of the fan 22 on the first surface 41 does not overlap with the second through hole 412. That is, the height of the fan 22 is lower than the second through hole 412, ensuring that most of the airflow entering the fan 22 comes from the heat exchanger 21, rather than the airflow in other spaces inside the cabinet door 32, thereby ensuring that the airflow passing through the heat exchanger 21 can leave from the second through hole 412 to achieve a heat exchange effect.

[0097] In the above embodiment, the fan 22 is a centrifugal fan. It is understood that after the airflow enters the centrifugal fan, the airflow rotates with the centrifugal fan under the drive of the centrifugal fan, and leaves along the radius direction of the centrifugal fan under the action of inertia. After passing through the centrifugal fan, the airflow realizes a 90° turn. The turning of the airflow utilizes the characteristics of the centrifugal fan itself, which can avoid the fan 22 doing extra work on the airflow.

[0098] Since the air outlet of the centrifugal fan is parallel to the first direction z, the noise generated by the centrifugal fan is generally reflected inside the cabinet door 32 after being transmitted from the air outlet, and will not be transmitted through the first through hole 411 or the second through hole 412, thereby reducing the noise of the fan 22.

[0099] In addition, in the embodiment where the fan 22 is a centrifugal fan, the static pressure of the centrifugal fan is relatively high. The static pressure refers to the pressure of the airflow overcoming the pipe resistance. The higher the static pressure, the more the airflow can overcome the pipe resistance, so that the airflow can move farther. Therefore, when the airflow movement path is fixed, the wind side resistance of the heat exchanger 21 can be increased (such as increasing the density of the fins or increasing the thickness of the heat exchanger 21), so that the resistance of the heat exchanger 21 to the airflow is increased, so that the movement distance of the airflow matches the fixed movement path, while improving the heat dissipation capacity of the heat exchanger 21.

[0100] Continue to refer to Figure 6In the above embodiment, the heat exchanger 21 is parallel to the first surface 41 , and the surface where the air inlet of the fan 22 is located is parallel to the first surface 41 .

[0101] The surfaces where the air inlets of the heat exchanger 21 and the fan 22 are located are parallel to the first surface 41. The airflow does not need to turn and can directly pass through the heat exchanger 21 and enter the fan 22. The flow rate of the airflow is more uniform, which can ensure that the equivalent flow resistance of the airflow passing through the heat exchanger 21 is smaller. The equivalent performance of the fan 22 at the same speed is improved, which reduces the power consumption of the fan 22, thereby reducing the noise of the fan 22.

[0102] At the same time, the surfaces where the air inlets of the heat exchanger 21 and the fan 22 are located are parallel to the first surface 41, which can reduce the size of the cabinet door 32 in the thickness direction, save space in the cabinet door 32, and facilitate the implementation of the energy storage cabinet 10 ( Figure 2 miniaturization as shown).

[0103] In the above embodiment, the heat exchanger 21 is attached to the first surface 41 , the fan 22 and the cabinet door 32 are attached to the second surface 42 close to the cabinet body 31 , and the second surface 42 and the first surface 41 are arranged along the second direction y.

[0104] The heat exchanger 21 is attached to the first surface 41, and the fan 22 is attached to the second surface 42, which can increase the distance between the heat exchanger 21 and the fan 22, so that the airflow leaving the heat exchanger 21 can have sufficient space to mix before entering the fan 22, making the flow velocity of the airflow when entering the fan 22 more uniform, thereby reducing the noise of the fan 22.

[0105] In the above embodiment, the distance between the fan 22 and the top end of the cabinet door 32 in the first direction z is greater than one tenth of the size of the fan 22 in the first direction z.

[0106] The larger the diameter of the fan 22 is, the greater the air volume is, and the greater the wind pressure at the air outlet is. There is a certain distance between the fan 22 and the top of the cabinet door 32, which can prevent the airflow from being restricted between the fan 22 and the cabinet door 32 after leaving the fan 22, ensuring that the airflow can flow to the second through hole 412.

[0107] Please refer to Figure 7 The heat exchanger 21 includes a pipeline 61 and a heat dissipation fin 62. The heat dissipation fin 62 is located on one side of the pipeline 61. The first opening 611 and the second opening 612 of the pipeline are both connected to the cooling device 12 ( Figure 1 The heat exchanger 21 is used to receive the coolant from the cooling device 12 through the first opening 611 of the pipeline; the heat exchanger 21 is also used to transport the coolant in the heat exchanger 21 to the cooling device 12 through the second opening 612 of the pipeline.

[0108] The pipeline 61 can receive the coolant from the cooling device 12 and transport the coolant in the heat exchanger 21 to the cooling device 12, so as to realize the circulation of the coolant between the cooling device 12 and the heat exchanger 21. The heat dissipation fins 62 are located on one side of the pipeline 61, and can dissipate the heat of the coolant in the pipeline 61. The airflow passing through the heat dissipation fins 62 can take away the heat on the heat dissipation fins 62, so that the heat dissipation fins 62 can continue to dissipate the heat for the coolant.

[0109] In the embodiment where the heat exchanger 21 includes a microchannel heat exchanger, the pipeline 61 includes a first header 71 and a second header 72 that are spaced apart, and a plurality of flat tubes 73 that are disposed between the first header 71 and the second header 72. Both ends of the flat tubes 73 are respectively connected to the first header 71 and the second header 72, and a heat dissipation fin 62 is disposed between two adjacent flat tubes 73, so that airflow can pass through the gaps between the heat dissipation fins 62 to take away heat.

[0110] The first header 71 has a partition plate inside, which divides the internal space of the first header 71 into a first cavity 711 and a second cavity 712. The first opening 611 of the pipeline is connected to the first cavity 711, and the second opening 612 is connected to the second cavity 712. The coolant can enter the first cavity 711 from the first opening 611, flow into the second header 72 through the flat tube 73, flow into the second cavity 712 through the flat tube 73, and flow back to the cooling device 12 through the second opening 612 of the pipeline.

[0111] Please refer to Figure 8 In the above embodiment, the cabinet door 32 includes a first surface 41 and a second surface 42 arranged along the second direction y, and a third surface 43 and a fourth surface 44 arranged along the first direction z, the third surface 43 is connected between the top of the first surface 41 and the top of the second surface 42, the fourth surface 44 is connected between the bottom of the first surface 41 and the bottom of the second surface 42, and the first surface 41 is arranged on the second surface 42 away from the cabinet body 31 ( Figure 2 side as shown).

[0112] Energy storage cabinet 10( Figure 2 As shown) also includes an air guide plate 50, which is arranged in the accommodating cavity 321, one end of the air guide plate 50 is connected to the third surface 43, and the other end of the air guide plate 50 is connected to the second surface 42, and in the first direction z, the other end of the air guide plate 50 is located between the air outlet of the fan 22 and the third surface 43.

[0113] One end of the air guide plate 50 is connected to the third surface 43, and the other end of the air guide plate 50 is connected to the second surface 42. In the first direction z, the other end of the air guide plate 50 is located between the air outlet of the fan 22 and the third surface 43, that is, the air guide plate 50 is located between the air outlet of the fan 22 and the top of the cabinet door 32. The air guide plate 50 can guide the airflow so that the airflow flows from the air outlet of the fan 22 to the second through hole 412, reducing the friction between the airflow and the cabinet door 32, thereby reducing the flow resistance of the airflow, ensuring the flow rate of the airflow, reducing the power consumption of the fan 22, and ensuring the normal use of the fan 22.

[0114] In the above embodiment, in the direction from the top end of the cabinet door 32 to the bottom end of the cabinet door 32 ( Figure 8 In the direction (in which the third surface 43 points to the fourth surface 44), the distance between the air guide plate 50 and the second surface 42 in the second direction y becomes smaller.

[0115] The distance between the air guide plate 50 and the second surface 42 in the second direction y becomes smaller, that is, the air guide plate 50 is inclined relative to the second surface 42 in the direction close to the first surface 41, so as to facilitate guiding the airflow from the air outlet of the fan 22 to the second through hole 412, thereby reducing the flow resistance of the airflow, reducing the power consumption of the fan 22, and ensuring the normal use of the fan 22.

[0116] It is understandable that the connection between the air guide plate 50 and the first surface 41 can be located at any position on the first surface 41. For example, the connection can be located at the middle position of the first surface 41, or at the connection between the first surface 41 and the third surface 43. It is understandable that when the connection is located at the connection between the first surface 41 and the third surface 43, the air guide plate 50 establishes a complete communication path between the air outlet of the fan 22 and the second through hole 412, and can completely guide the airflow from the air outlet of the fan 22 to the second through hole 412, further reducing the friction between the airflow and the cabinet door 32, and reducing the flow resistance of the airflow.

[0117] The embodiment of the present application does not limit the shape of the air guide plate 50. For example, the air guide plate 50 can be a straight plate or a curved plate.

[0118] Continue to refer to Figure 8 , the air guide plate 50 is a curved plate, and the surface of the air guide plate 50 facing the first surface 41 is a curved surface. Exemplarily, the curved surface may be a concave surface, and in the embodiment where the curved surface is a concave surface, the air guide plate 50 may be concave in the direction close to the first surface 41. The surface of the air guide plate 50 facing the first surface 41 is a curved surface, which can reduce the impact force when the airflow contacts the air guide plate 50, so that the airflow changes direction more smoothly during the process of passing through the air guide plate 50, and is not easy to generate turbulence or backflow.

[0119] Please refer to Fig. 9In the above embodiment, a sound absorbing material 51 is disposed in the space enclosed by the air guide plate 50 , the third surface 43 and the second surface 42 .

[0120] The sound absorbing material 51 is usually a loose and porous material. When noise enters the pores of the sound absorbing material 51, it will be subjected to friction from air molecules and viscous resistance, causing the sound absorbing material 51 to vibrate mechanically, converting the noise into heat energy, thereby reducing the noise.

[0121] The sound absorbing material 51 is disposed in the space enclosed by the air guide plate 50 , the third surface 43 and the second surface 42 . The sound absorbing material 51 does not need to occupy additional space inside the cabinet door 32 , and can save space inside the cabinet door 32 while reducing the noise of the fan 22 .

[0122] In addition, the sound absorbing material 51 has little effect on the airflow, and has almost no effect, so the flow rate of the airflow can be guaranteed, the heat exchange effect of the heat exchanger 21 can be guaranteed, and at the same time, the power consumption of the fan 22 can be avoided from increasing, thus ensuring the normal operation of the fan 22.

[0123] The embodiment of the present application does not limit the sound absorbing material 51. For example, the sound absorbing material 51 may include sound absorbing cotton, foam metal, etc. In some embodiments, a hole may be drilled on the air guide plate 50, and the sound absorbing material 51 may be inserted into the hole. It is understood that the air guide plate 50 is usually relatively hard and cannot absorb noise. By opening a hole in the air guide plate 50, the sound absorbing material 51 may be in contact with the flow field to absorb noise. It is understood that the flow field refers to the area where air flows in the space.

[0124] Please refer to Fig.10 , Fig.11 and Fig.12 In the above embodiment, the energy storage cabinet 10 ( Figure 2 2) further includes a muffler 52, which is disposed on the air inlet or outlet of the fan 22. It is understood that in some embodiments, the muffler 52 can be disposed on the air inlet of the fan 22 (such as Fig.11 In some embodiments, the muffler 52 may be disposed on the air outlet of the fan 22 (eg Fig.12 In some embodiments, the muffler 52 may be disposed on the air inlet and the air outlet of the fan 22 (eg Fig.10 shown).

[0125] The muffler 52 has little effect on the air volume, and can reduce the noise of the fan 22 while ensuring the air volume of the fan 22 , thereby ensuring the heat dissipation effect of the heat exchanger 21 .

[0126] The embodiment of the present application does not limit the muffler 52, and the corresponding muffler 52 can be selected according to the type of noise. Exemplarily, the muffler 52 may include a resistive muffler and a reactive muffler, the resistive muffler mainly eliminates medium and high frequency noise, and the reactive muffler mainly eliminates medium and low frequency noise.

[0127] In the embodiment where the muffler 52 includes a resistive muffler, a sound absorbing material 51 ( Fig. 9 The noise energy transmitted along the pipeline is converted into heat energy and attenuated, thereby achieving sound elimination.

[0128] In an embodiment where the muffler 52 includes a reactive muffler, the pipe of the muffler 52 is connected to a resonance cavity or a branch pipe so that the noise is reflected, resonated or interfered in the pipe, thereby preventing the noise from passing through the muffler 52, thereby achieving the purpose of noise reduction.

[0129] Please refer to Fig.13 In the above embodiment, there are multiple fans 22 , and the multiple fans 22 are arranged along the third direction x, wherein the third direction x is the length direction of the cabinet 31 .

[0130] The number of fans 22 is multiple, which can reduce the processing difficulty and processing cost of the fans 22 while ensuring the air volume. The fans 22 are arranged along the third direction x to ensure that the thickness of the cabinet door 32 is small, ensuring that the fans 22 have little impact on the equipment in the cabinet 31.

[0131] In some embodiments, the plurality of fans 22 are arranged at intervals along the third direction x. The plurality of fans 22 are arranged at intervals along the third direction x to avoid the phenomenon of wind grabbing caused by two adjacent fans 22 being too close to each other, thereby ensuring the stable operation of the fans 22.

[0132] The wind grabbing phenomenon refers to the uneven distribution of the airflow, where the flow rate of one of the two adjacent fans 22 is too large, while the flow rate of the other fan 22 is too small, or even countercurrent.

[0133] Please refer to Figure 1 and Fig.14 The embodiment of the present application further provides an energy storage cabinet 10, including a cabinet 20, a heat exchanger 21 and a fan 22. The cabinet 20 includes a cabinet body 31 and a cabinet door 32 for covering the cabinet body 31. The cabinet door 32 is surrounded by a accommodating cavity 321. A first surface 41 of the cabinet door 32 facing away from the cabinet body 31 is provided with a first through hole 411 and a second through hole 412 penetrating the first surface 41. The first through hole 411 and the second through hole 412 are arranged along a first direction z. In the first direction z, the first through hole 411 is arranged on a side of the second through hole 412 away from the top of the cabinet door 32.

[0134] The heat exchanger 21 is located in the accommodating cavity 321, and the projection of the heat exchanger 21 on the first surface 41 overlaps with the first through hole 411. The fan 22 is located in the accommodating cavity 321. In the first direction z, the fan 22 is arranged on the side of the heat exchanger 21 close to the top of the cabinet door 32. In the second direction y, the fan 22 is arranged on the side of the heat exchanger 21 close to the cabinet body 31, the air inlet of the fan 22 faces the bottom of the cabinet door 32, and the air outlet of the fan 22 faces the first surface 41 or the top of the cabinet door 32. The first direction z is the height direction of the cabinet body 31, and the second direction y is the thickness direction of the cabinet body 31.

[0135] It can be understood that in the second direction y, the fan 22 is arranged on the side of the heat exchanger 21 close to the cabinet 31, including the fan 22 being located on the side of the entire heat exchanger 21 close to the cabinet 31 ( Fig.14 As shown), the fan 22 is also located on one side of the heat exchanger 21 close to the cabinet 31 ( Fig.16 shown).

[0136] The projection of the heat exchanger 21 on the first surface 41 overlaps with the first through hole 411, and the airflow can enter the heat exchanger 21 through the first through hole 411. In the first direction z, the fan 22 is arranged on the side of the heat exchanger 21 close to the top of the cabinet door 32, and in the second direction y, the fan 22 is arranged on the side of the heat exchanger 21 close to the cabinet body 31, and the air inlet of the fan 22 faces the bottom of the cabinet door 32, that is, the airflow leaves the heat exchanger 21 and has a smaller turn when entering the fan 22.

[0137] Compared with the airflow in the related art, the turning direction of the airflow in the embodiment of the present application is reduced, and the work done by the fan 22 on the airflow is reduced, which can reduce the power consumption of the fan 22 and thus reduce the noise of the fan 22.

[0138] At the same time, since the airflow turns less, the flow velocity of the airflow when entering the fan 22 is more uniform, that is, the uniformity of the flow velocity of the airflow entering the fan 22 is improved, which can reduce the noise of the fan 22.

[0139] In the embodiment where the air outlet of the fan 22 is arranged toward the first surface 41 , the fan 22 is a centrifugal fan.

[0140] In the embodiment where the air outlet of the fan 22 is arranged toward the top of the cabinet door 32, the fan 22 is an axial flow fan.

[0141] Continue to refer to Fig.14 In the above embodiment, the heat exchanger 21 is parallel to the first surface 41. The heat exchanger 21 is parallel to the first surface 41, and the airflow does not need to turn and can directly enter the heat exchanger 21. The flow rate of the airflow is more uniform, which can ensure that the equivalent flow resistance of the airflow when entering the heat exchanger 21 is small, so that the power consumption of the fan 22 is reduced, thereby reducing the noise of the fan 22.

[0142] In the above embodiment, the heat exchanger 21 is attached to the first surface 41 , the fan 22 is perpendicular to the second surface 42 of the cabinet door 32 , and the second surface 42 and the first surface 41 are arranged along the second direction y.

[0143] The heat exchanger 21 is attached to the first surface 41, which can increase the space between the heat exchanger 21 and the fan 22, so that the airflow leaving the heat exchanger 21 can have sufficient space to mix before entering the fan 22, ensuring that the flow rate of the airflow when entering the fan 22 is more uniform, reducing the power consumption of the fan 22, and thus reducing the noise of the fan 22. The heat exchanger 21 is attached to the first surface 41, and the fan 22 is perpendicular to the second surface 42 of the cabinet door 32. At this time, the airflow flows from the heat exchanger 21 to the fan 22 and needs to turn 90°. The turning of the airflow is small, which can reduce the power consumption of the fan 22, thereby reducing the noise of the fan 22.

[0144] Continue to refer to Fig.14 In the above embodiment, the cabinet door 32 includes a first surface 41 and a second surface 42 arranged along the second direction y, and a third surface 43 and a fourth surface 44 arranged along the first direction z, the third surface 43 is connected between the top of the first surface 41 and the top of the second surface 42, the fourth surface 44 is connected between the bottom of the first surface 41 and the bottom of the second surface 42, and the first surface 41 is arranged on the second surface 42 away from the cabinet body 31 ( Figure 2 side as shown).

[0145] Energy storage cabinet 10( Figure 2 As shown) also includes an air guide plate 50, which is arranged in the accommodating cavity 321, one end of the air guide plate 50 is connected to the third surface 43, and the other end of the air guide plate 50 is connected to the second surface 42, and in the first direction z, the other end of the air guide plate 50 is located between the air outlet of the fan 22 and the third surface 43.

[0146] One end of the air guide plate 50 is connected to the third surface 43, and the other end of the air guide plate 50 is connected to the second surface 42. In the first direction z, the other end of the air guide plate 50 is located between the air outlet of the fan 22 and the third surface 43, that is, the air guide plate 50 is located between the air outlet of the fan 22 and the top of the cabinet door 32. The air guide plate 50 can guide the airflow so that the airflow flows from the air outlet of the fan 22 to the second through hole 412, reducing the friction between the airflow and the cabinet door 32, thereby reducing the flow resistance of the airflow, ensuring the flow rate of the airflow, reducing the power consumption of the fan 22, and ensuring the normal use of the fan 22.

[0147] In the direction from the top end of the cabinet door 32 to the bottom end of the cabinet door 32 ( Fig.14 In the direction (in which the third surface 43 points to the fourth surface 44), the distance between the air guide plate 50 and the second surface 42 in the second direction y becomes smaller.

[0148] The distance between the air guide plate 50 and the second surface 42 in the second direction y becomes smaller, that is, the air guide plate 50 is inclined relative to the second surface 42 in the direction close to the first surface 41, so as to facilitate guiding the airflow from the air outlet of the fan 22 to the second through hole 412, thereby reducing the flow resistance of the airflow, reducing the power consumption of the fan 22, and ensuring the normal use of the fan 22.

[0149] In the above embodiment, the sound absorbing material 51 is disposed in the space enclosed by the air guide plate 50 , the third surface 43 and the second surface 42 .

[0150] When noise enters the pores of the sound-absorbing material 51, it will be subjected to friction from air molecules and viscous resistance, causing the sound-absorbing material 51 to vibrate mechanically, converting the noise into heat energy, thereby reducing the noise. The sound-absorbing material 51 is arranged in the space surrounded by the air guide plate 50, the third surface 43 and the second surface 42. The sound-absorbing material 51 does not need to occupy additional space inside the cabinet door 32, and can save space inside the cabinet door 32 while reducing the noise of the fan 22. In addition, the sound-absorbing material 51 has little effect on the airflow, and has almost no effect, which can ensure the flow rate of the airflow, ensure the heat exchange effect of the heat exchanger 21, and at the same time avoid the increase of power consumption of the fan 22, and ensure the normal operation of the fan 22.

[0151] Please refer to Fig.15 , energy storage cabinet 10( Figure 2 ) further includes a muffler 52, which is disposed on the air inlet or air outlet of the fan 22. It is understood that in some embodiments, the muffler 52 can be disposed on the air inlet of the fan 22; in some embodiments, the muffler 52 can be disposed on the air outlet of the fan 22; in some embodiments, the muffler 52 can be disposed on the air inlet and the air outlet of the fan 22.

[0152] The muffler 52 has little effect on the air volume, and can reduce the noise of the fan 22 while ensuring the air volume of the fan 22 , thereby ensuring the heat dissipation effect of the heat exchanger 21 .

[0153] Please refer to Fig.16 In the above embodiment, the air outlet of the fan 22 faces the top of the cabinet door 32, there is an angle between the heat exchanger 21 and the first surface 41, the first end of the heat exchanger 21 contacts the first surface 41, and the second end of the heat exchanger 21 contacts the fourth surface 44.

[0154] There is an angle between the heat exchanger 21 and the first surface 41, the first end of the heat exchanger 21 contacts the first surface 41, and the second end contacts the fourth surface 44, that is, the heat exchanger 21 is tilted, and the air outlet of the heat exchanger 21 faces the air inlet of the fan 22 and the second surface 42. The tilted setting of the heat exchanger 21 can increase the heat exchange area of ​​the heat exchanger 21 and improve the heat exchange efficiency of the heat exchanger 21. The air outlet of the heat exchanger 21 faces the air inlet of the fan 22 and the second surface 42, which can ensure that the airflow leaving the heat exchanger 21 can enter the fan 22, ensuring the heat exchange effect of the heat exchanger 21.

[0155] In the above embodiment, the first end of the heat exchanger 21 is also in contact with the fan 22 , and the second end of the heat exchanger 21 is also in contact with the second surface 42 .

[0156] The first end of the heat exchanger 21 contacts the fan 22, and the second end of the heat exchanger 21 contacts the second surface 42. The air outlet of the heat exchanger 21 and the air inlet of the fan 22 form a sealed space, and the airflow from the heat exchanger 21 can enter the fan 22 more conveniently and accurately, ensuring that the airflow passing through the heat exchanger 21 leaves from the second through hole 412, thereby ensuring the heat exchange effect of the heat exchanger 21.

[0157] Please refer to Figure 1 , Fig.17 and Fig.18 The embodiment of the present application further provides an energy storage cabinet 10, including a cabinet 20, a heat exchanger 21 and a fan 22. The cabinet 20 includes a cabinet body 31 and a cabinet door 32 for covering the cabinet body 31. The cabinet door 32 is surrounded by a accommodating cavity 321. A first surface 41 of the cabinet door 32 facing away from the cabinet body 31 is provided with a first through hole 411 and a second through hole 412 penetrating the first surface 41. The first through hole 411 and the second through hole 412 are arranged along a first direction z. In the first direction z, the first through hole 411 is arranged on a side of the second through hole 412 away from the top of the cabinet door 32.

[0158] The fan 22 is located in the accommodating cavity 321 , the projection of the fan 22 on the first surface 41 overlaps with the first through hole 411 , the air outlet of the fan 22 faces the top of the cabinet door 32 , and the air inlet of the fan 22 is arranged toward the bottom of the first surface 41 or the cabinet door 32 .

[0159] The heat exchanger 21 is located in the accommodating cavity 321. In the first direction z, the heat exchanger 21 is arranged on one side of the top of the fan 22 close to the cabinet door 32. The projection of the heat exchanger 21 on the first surface 41 overlaps with the second through hole 412. There is an angle between the heat exchanger 21 and the first surface 41. The air inlet of the heat exchanger 21 faces the air outlet of the fan 22, and the air outlet of the heat exchanger 21 faces the first surface 41. The first direction z is the height direction of the cabinet 31, and the second direction is the thickness direction of the cabinet 31.

[0160] The projection of the fan 22 on the first surface 41 overlaps with the first through hole 411, and the air inlet of the fan 22 is arranged toward the first surface 41 or the bottom end of the cabinet door 32. The airflow has a smaller turn when entering the fan 22 through the first through hole 411, and the flow resistance of the airflow is smaller. The flow velocity of the airflow when entering the fan 22 is relatively uniform. The air outlet of the fan 22 faces the air inlet of the heat exchanger 21. After leaving the fan 22, the airflow can directly enter the heat exchanger 21 without turning. The flow resistance of the airflow when entering the heat exchanger 21 is smaller, and the flow velocity is relatively uniform, thereby ensuring that the noise of the fan is smaller. There is an angle between the heat exchanger 21 and the first surface 41. The heat exchanger 21 is arranged tilted, which can ensure that the airflow coming out of the fan 22 can enter the heat exchanger 21, and achieve the heat exchange effect of the heat exchanger 21.

[0161] In the embodiment where the air inlet of the fan 22 is disposed toward the first surface 41 ( Fig.17 As shown), the fan 22 is a centrifugal fan.

[0162] In the embodiment where the air inlet of the fan 22 is arranged toward the bottom end of the cabinet door 32 ( Fig.18 As shown), the fan 22 is an axial flow fan.

[0163] In the above embodiment, in the second direction y, the fan 22 is perpendicular to the first surface 41, one end of the fan 22 is in contact with the first surface 41, and the other end of the fan 22 is in contact with the second surface 42, and the first surface 41 and the second surface 42 are arranged along the second direction y.

[0164] One end of the fan 22 is in contact with the first surface 41 , and the other end of the fan 22 is in contact with the second surface 42 , which can increase the area of ​​the air outlet of the fan 22 and ensure that the airflow can enter the heat exchanger 21 to achieve a heat exchange effect.

[0165] In the above embodiment, the cabinet door 32 includes a first surface 41 and a second surface 42 arranged along the second direction y, and a third surface 43 and a fourth surface 44 arranged along the first direction z, the third surface 43 is connected between the top of the first surface 41 and the top of the second surface 42, the fourth surface 44 is connected between the bottom of the first surface 41 and the bottom of the second surface 42, and the first surface 41 is arranged on the side of the second surface 42 away from the cabinet body 31.

[0166] There is an angle between the heat exchanger 21 and the second surface 42 , the first end of the heat exchanger 21 contacts the second surface 42 , and the second end of the heat exchanger 21 contacts the fan 22 .

[0167] The first end of the heat exchanger 21 contacts the second surface 42, and the second end of the heat exchanger 21 contacts the fan 22. A sealed space is formed between the air inlet of the heat exchanger 21 and the air outlet of the fan 22, so that the airflow from the fan 22 can enter the heat exchanger 21 more conveniently and accurately. At the same time, the air outlet of the heat exchanger 21 faces the second through hole 412, and the airflow passing through the heat exchanger 21 can leave from the second through hole 412, thereby ensuring the heat exchange effect of the heat exchanger 21.

[0168] In the above embodiment, the second end of the heat exchanger 21 is also in contact with the first surface 41 , and the heat exchange area of ​​the heat exchanger 21 is relatively large, which can improve the heat exchange rate of the heat exchanger 21 .

[0169] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy storage cabinet, characterized in that: include: A cabinet, comprising a cabinet body and a cabinet door for covering the cabinet body, wherein the cabinet door is surrounded by a receiving cavity, and a first through hole and a second through hole penetrating the first surface are arranged on a first surface of the cabinet door away from the cabinet body, wherein the first through hole and the second through hole are arranged along a first direction, and in the first direction, the first through hole is arranged on a side of the second through hole away from a top end of the cabinet door; A heat exchanger, wherein the heat exchanger is located in the accommodating cavity; a fan, the fan being located in the accommodating cavity, the fan and the heat exchanger being arranged along a second direction, the air inlet of the fan and the projection of the heat exchanger on the first surface both overlapping with the first through hole along the second direction, the air inlet of the fan being arranged toward the heat exchanger, and the air outlet of the fan being toward the top of the cabinet door; The first direction is the height direction of the cabinet, and the second direction is the thickness direction of the cabinet.

2. The energy storage cabinet according to claim 1, characterized in that: Along the second direction, a projection of the fan on the first surface does not overlap with the second through hole.

3. The energy storage cabinet according to claim 1 or 2, characterized in that: The heat exchanger is parallel to the first surface, and the surface where the air inlet of the fan is located is parallel to the first surface.

4. The energy storage cabinet according to any one of claims 1 to 3, characterized in that: The heat exchanger is attached to the first surface, the fan and the cabinet door are attached to a second surface close to the cabinet body, and the second surface and the first surface are arranged along the second direction.

5. The energy storage cabinet according to any one of claims 1 to 4, characterized in that: The distance between the fan and the top of the cabinet door in the first direction is greater than one tenth of the size of the fan in the first direction.

6. The energy storage cabinet according to any one of claims 1 to 5, characterized in that: The cabinet door comprises the first surface and the second surface arranged along the second direction, and the third surface and the fourth surface arranged along the first direction, the third surface is connected between the top end of the first surface and the top end of the second surface, the fourth surface is connected between the bottom end of the first surface and the bottom end of the second surface, and the first surface is arranged on the side of the second surface away from the cabinet body; The energy storage cabinet also includes an air guide plate, which is arranged in the accommodating cavity, one end of the air guide plate is connected to the third surface, and the other end of the air guide plate is connected to the second surface. In the first direction, the other end of the air guide plate is located between the air outlet of the fan and the third surface.

7. The energy storage cabinet according to claim 6, characterized in that: In a direction from the top end of the cabinet door to the bottom end of the cabinet door, a distance between the air guide plate and the second surface in the second direction becomes smaller.

8. The energy storage cabinet according to claim 6 or 7, characterized in that: A sound absorbing material is arranged in a space surrounded by the air guide plate, the third surface and the second surface.

9. The energy storage cabinet according to any one of claims 1 to 8, characterized in that: There are multiple fans, and the multiple fans are arranged along the third direction; Wherein, the third direction is the length direction of the cabinet.

10. An energy storage cabinet, characterized in that: include: A cabinet, comprising a cabinet body and a cabinet door for covering the cabinet body, wherein the cabinet door is surrounded by a receiving cavity, and a first through hole and a second through hole penetrating the first surface are arranged on a first surface of the cabinet door away from the cabinet body, wherein the first through hole and the second through hole are arranged along a first direction, and in the first direction, the first through hole is arranged on a side of the second through hole away from a top end of the cabinet door; a heat exchanger, the heat exchanger being located in the accommodating cavity, and a projection of the heat exchanger on the first surface overlapping with the first through hole; A fan, the fan is located in the accommodating cavity, in a first direction, the fan is arranged on a side of the heat exchanger close to the top of the cabinet door, in a second direction, the fan is arranged on a side of the heat exchanger close to the cabinet body, the air inlet of the fan is toward the bottom of the cabinet door, and the air outlet of the fan is arranged toward the first surface or the top of the cabinet door; The first direction is the height direction of the cabinet, and the second direction is the thickness direction of the cabinet.

11. The energy storage cabinet according to claim 10, characterized in that: The heat exchanger is parallel to the first surface.

12. The energy storage cabinet according to claim 10 or 11, characterized in that: The heat exchanger is attached to the first surface, the fan is perpendicular to the second surface of the cabinet, and the second surface and the first surface are arranged along the second direction.

13. The energy storage cabinet according to any one of claims 10 to 12, characterized in that: The cabinet door comprises the first surface and the second surface arranged along the second direction, and the third surface and the fourth surface arranged along the first direction, the third surface is connected between the top end of the first surface and the top end of the second surface, the fourth surface is connected between the bottom end of the first surface and the bottom end of the second surface, and the first surface is arranged on the side of the second surface away from the cabinet body; The energy storage cabinet also includes an air guide plate, which is arranged in the accommodating cavity, one end of the air guide plate is connected to the third surface, and the other end of the air guide plate is connected to the second surface. In the first direction, the other end of the air guide plate is located between the air outlet of the fan and the third surface.

14. The energy storage cabinet according to claim 13, characterized in that: In a direction from the top end of the cabinet door to the bottom end of the cabinet door, a distance between the air guide plate and the second surface in the second direction becomes smaller.

15. The energy storage cabinet according to claim 13 or 14, characterized in that: A sound absorbing material is arranged in a space surrounded by the air guide plate, the third surface and the second surface.

16. The energy storage cabinet according to any one of claims 10 to 15, characterized in that: The air outlet of the fan faces the first surface, and the fan is a centrifugal fan.

17. The energy storage cabinet according to any one of claims 10 to 15, characterized in that: The air outlet of the fan faces the top of the cabinet door, and the fan is an axial flow fan.

18. The energy storage cabinet according to claim 17, characterized in that: An angle is formed between the heat exchanger and the first surface, a first end of the heat exchanger contacts the first surface, and a second end of the heat exchanger contacts the fourth surface.

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