Air conditioning unit and battery energy storage device

Abstract

The application discloses an air conditioning unit of a battery energy storage device and the battery energy storage device. The air conditioning unit of the battery energy storage device comprises a refrigerant compression condensing unit, which comprises a compressor (6), a condenser (5) in communication with an exhaust port of the compressor (6) and comprising a first heat exchange part (5a) in a plate shape, a condensing fan (4) arranged on one side of the first heat exchange part (5a) and configured to make heat exchange air flow through the condenser (5), and a spoiler fan (18) arranged on one end of the condensing fan (4) along a first direction, wherein the first direction is perpendicular to the axial direction of the condensing fan (4) and parallel to the first heat exchange part (5a), and the spoiler fan (18) is configured to blow air at least to the side of the condensing fan (4) close to the first heat exchange part (5a) along the first direction.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air conditioning unit and a battery energy storage device. Background Technology

[0002] Battery energy storage devices are generally used in scenarios that require energy storage, such as photovoltaic power plants or electric vehicle factories. Batteries radiate heat during use and storage, and the accumulation of heat can easily cause safety accidents such as combustion and explosion. Therefore, batteries need to be cooled.

[0003] Figure 1 A schematic diagram of a battery energy storage device of a related technology is shown. (See attached diagram) Figure 1 The battery energy storage device includes a housing 1, a battery pack 2 disposed within the housing 1, and an air conditioning unit 3 disposed within the housing 1 and located at one end of the housing 1. The air conditioning unit 3 includes a compressor, a condenser connected to the compressor's exhaust port and configured to condense the compressed refrigerant therein, a throttling device connected to the condenser's outlet, and an evaporator connected to the throttling device and configured to evaporate the throttled refrigerant therein. Furthermore, the air conditioning unit 3 also includes an inlet pipe for introducing a medium (e.g., water) to be cooled by the evaporator and a drain pipe for discharging the cooled medium. The cooled medium discharged from the drain pipe is transported to the battery pack 2 to cool the batteries in the battery pack 2.

[0004] When the air conditioning unit 3 used for battery cooling is a dual-compressor or multi-compressor refrigeration system, the size of the condenser and the fan 4 that provides heat exchange air to the condenser cannot be made large enough due to the limited space size of the air conditioning unit 3. Often, the compressor system and the fan system cannot be matched one-to-one, that is, the dual-compressor or multi-compressor refrigeration system will share a set of fans 4. As a result, when the single compressor system is running, there is a situation where the airflow is blown out directly without passing through the condenser, which affects the normal refrigeration airflow organization and makes the air conditioning unit 3 not energy-efficient.

[0005] In existing energy storage liquid cooling units, the layout of the condenser and fan is usually quite simple, leading to uneven airflow into the condenser. Especially when the airflow from the back of the condenser is ineffective, localized overheating can easily occur, affecting heat dissipation efficiency and system stability. Furthermore, traditional control methods often cannot precisely adjust according to real-time operating conditions, resulting in energy waste and low system efficiency.

[0006] A wall panel is installed between the air conditioning unit 3 and the battery pack 2. The air conditioning unit is mounted on the front of the wall panel, and its air inlet is located on the back of the wall panel. In existing energy storage liquid-cooled units (air conditioning units), the layout of the condenser and fan 4 is usually quite simple, resulting in uneven air intake to the condenser 4 (locally insufficient air intake). Especially when the air intake at the back of the condenser 4 is ineffective, local overheating can easily occur, affecting heat dissipation efficiency and system stability. In addition, traditional control methods often cannot make precise adjustments according to real-time operating conditions, leading to energy waste and low system efficiency. Utility Model Content

[0007] The present invention aims to provide an air conditioning unit and a battery energy storage device to improve the problem of local overheating of condensers in related technologies when the air intake effect is poor.

[0008] According to one aspect of the present invention, an air conditioning unit for a battery energy storage device is provided. The air conditioning unit includes a refrigerant compression and condensing unit, which includes:

[0009] compressor;

[0010] A condenser, connected to the exhaust port of the compressor and including a first heat exchange section in the form of a plate;

[0011] A condenser fan is located on one side of the first heat exchange section and is configured to allow heat exchange air to flow through the condenser;

[0012] A turbulence fan is disposed at one end of the condenser fan along a first direction, the first direction being perpendicular to the axial direction of the condenser fan and parallel to the first heat exchange section. The turbulence fan is configured to deliver air along the first direction at least toward the side of the condenser fan closest to the first heat exchange section.

[0013] In some embodiments, the first heat exchanger further includes a second heat exchange section connected to the first heat exchange section and located on the side of the first heat exchange section near the condenser fan. The second heat exchange section is located at the end of the first heat exchange section near the turbulence fan along a first direction, and the second heat exchange section is located between the turbulence fan and the condenser fan in the first direction.

[0014] In some embodiments, the refrigerant compression condensing unit includes two or more condensing fans arranged side by side along a first direction.

[0015] In some embodiments, the air conditioning unit includes two or more refrigerant compression condensing units that are independently controlled to start and stop, and the two or more refrigerant compression condensing units are arranged along a second direction that is perpendicular to the first direction and parallel to the first heat exchange section.

[0016] In some embodiments, the compressor is located axially between the first heat exchange section and the condenser fan.

[0017] In some embodiments, the compressor is located between two adjacent condenser fans in a first direction.

[0018] In some embodiments,

[0019] The air conditioning unit is installed on one side of the first wall panel and spaced apart from the first wall panel. The first wall panel is located on the side of the first heat exchange section away from the condenser fan.

[0020] A second wall panel is installed at the end of the air conditioning unit that is furthest from the turbulence fan along the first direction.

[0021] In some embodiments, the turbulence fan is also configured to blow a portion of the air that has exchanged heat with the condenser toward the condenser.

[0022] In some embodiments, the air conditioning unit further includes:

[0023] The throttling component is connected to the condenser;

[0024] An evaporator, connected to a throttling device, is configured to allow the throttled refrigerant to evaporate within it;

[0025] The controller, connected to the turbulence fan signal, is configured to:

[0026] Response to ambient temperature T 环境 The condensing pressure P of the refrigerant in the condenser is below the first predetermined temperature. 冷凝 and the evaporation pressure P of the refrigerant in the evaporator 蒸发 Pressure difference ΔP < ΔP 最低值 The turbulence fan is controlled to rotate, causing some of the air that has exchanged heat with the condenser to flow back to the condenser, thereby adjusting the pressure difference ΔP to the target pressure difference ΔP. 目标 Target pressure difference ΔP 目标 >△P 最低值 .

[0027] In some embodiments, the controller and compressor are signal-connected and further configured to:

[0028] Response to ambient temperature T 环境 If the temperature is below the first predetermined temperature and the compressor speed is greater than the minimum compressor speed, then the compressor speed will be reduced.

[0029] In some embodiments, the controller is also configured to respond to ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed is equal to the minimum compressor speed, the turbulence fan speed reaches the maximum turbulence fan speed, and the pressure difference ΔP < ΔP. 最低值 If so, the compressor will be shut down.

[0030] In some embodiments, the controller is also configured to respond to ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed is equal to the minimum compressor speed, the turbulence fan speed reaches the minimum turbulence fan speed, and the pressure difference ΔP > ΔP. 最高值 Then, the speed of the condenser fan is increased.

[0031] In some embodiments, the controller is also configured to respond to ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed is greater than the minimum compressor speed, the condenser fan speed is greater than the minimum condenser fan speed, the turbulence fan speed is greater than the minimum turbulence fan speed, and ΔP 最低值 <Pressure difference ΔP<ΔP 最高值 Then, according to priority, the compressor speed is reduced, the condenser fan speed is reduced, and the speed of the turbulence fan is adjusted.

[0032] According to another aspect of this utility model, a control method for the above-mentioned air conditioning unit is also improved, the control method comprising:

[0033] Obtain ambient temperature T 环境 and the condensing pressure P of the refrigerant in the condenser 冷凝 and the evaporation pressure P of the refrigerant in the evaporator 蒸发 ;

[0034] If the ambient temperature T 环境 Below the first predetermined temperature and condensation pressure P 冷凝 and evaporation pressure P 蒸发 Pressure difference ΔP < ΔP 最低值 The turbulence fan is controlled to rotate, causing some of the air that has exchanged heat with the condenser to flow back to the condenser, thereby adjusting the pressure difference ΔP to the target pressure difference ΔP. 目标 Target pressure difference ΔP 目标 The minimum value of △P.

[0035] In some embodiments, the control method further includes:

[0036] If the ambient temperature T 环境 If the temperature is below the first predetermined temperature and the compressor speed is greater than the minimum compressor speed, then the compressor speed will be reduced.

[0037] In some embodiments,

[0038] If the ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed is equal to the minimum compressor speed, the turbulence fan speed reaches the maximum turbulence fan speed, and the pressure difference ΔP < ΔP. 最低值 If so, the compressor will be shut down.

[0039] In some embodiments,

[0040] If the ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed is equal to the minimum compressor speed, the turbulence fan speed reaches the minimum turbulence fan speed, and the pressure difference ΔP > ΔP. 最高值 Then, the speed of the condenser fan is increased.

[0041] In some embodiments, if the ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed is greater than the minimum compressor speed, the condenser fan speed is greater than the minimum condenser fan speed, the turbulence fan speed is greater than the minimum turbulence fan speed, and ΔP 最低值 <Pressure difference ΔP<ΔP 最高值 Then, according to priority, the compressor speed is reduced, the condenser fan speed is reduced, and the speed of the turbulence fan is adjusted.

[0042] In some embodiments, the start-up process of the air conditioning unit includes:

[0043] If the ambient temperature T 环境 The temperature is lower than the first predetermined temperature, and the third predetermined temperature is lower than the first predetermined temperature.

[0044] Adjust the compressor speed to its maximum value and turn on the turbulence fan;

[0045] The detected pressure difference ΔP is greater than the target pressure difference ΔP 目标 Then, adjust the compressor speed to the lowest value;

[0046] Adjust the speed of the condenser fan and / or the speed of the turbulence fan to adjust the pressure difference ΔP to the target pressure difference ΔP. 目标 Among them, reducing the speed of the condenser fan increases the pressure difference ΔP, increasing the speed of the condenser fan increases the pressure difference ΔP, reducing the wind speed of the turbulence fan decreases the pressure difference ΔP, and increasing the wind speed of the turbulence fan increases the pressure difference ΔP.

[0047] According to another aspect of the present invention, a battery energy storage device is also provided, the battery energy storage device including the air conditioning unit of the above-mentioned battery energy storage device.

[0048] Applying the technical solution of this application, when the air conditioning unit is erected in front of the first wall panel and the air inlet side of the condenser is located facing the first wall panel, the turbulence fan supplies air to the air inlet side of the condenser fan. The turbulence fan delivers air along the first direction between the condenser fan and the first wall, while the condenser fan delivers air along its axial direction away from the first wall. When the air volume of the condenser fan is large, the direction of the combined airflow from the turbulence fan and the condenser fan gradually deflects away from the first wall towards the direction away from the turbulence fan. Correspondingly, more heat exchange air can be obtained at the position of the first heat exchange section away from the turbulence fan in the first direction, which helps to improve the problem of local overheating of the condenser when the air inlet effect is poor, which exists in related technologies. It also helps to make the air inlet of the condenser more uniform.

[0049] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 A schematic diagram of a battery energy storage device in the related art is shown.

[0052] Figure 2 A schematic diagram of the system principle of an air conditioning unit using a battery energy storage device according to an embodiment of the present invention is shown.

[0053] Figure 3 A three-dimensional structural schematic diagram of an air conditioning unit using a battery energy storage device according to an embodiment of the present invention is shown.

[0054] Figure 4 A front view structural schematic diagram of an air conditioning unit of a battery energy storage device according to an embodiment of the present invention is shown;

[0055] Figure 5 A side view of the air conditioning unit of the battery energy storage device according to an embodiment of the present invention is shown.

[0056] Figure 6 A top view of the air conditioning unit of the battery energy storage device according to an embodiment of the present invention is shown.

[0057] Figure 7A top view of the air conditioning unit of the battery energy storage device according to another embodiment of the present invention is shown;

[0058] Figure 8 A control system block diagram of an air conditioning unit of a battery energy storage device according to an embodiment of the present invention is shown.

[0059] In the picture:

[0060] 1. Housing; 2. Battery pack; 3. Air conditioning unit; 4. Condenser fan; 5. Condenser; 6. Compressor; 7. Heat exchange section; 7a. Evaporator; 7b. Heat exchanger; 8. Inlet pipe; 9. Outlet pipe; 10. Liquid receiver; 11. Radiator; 12. Filter; 13. Throttling device; 14. First switch; 15. Second switch; 16. Exhaust temperature detection device; 17. Intake temperature detection device; 18. Turbulence fan; 19. First wall panel; 20. Second wall panel; 21. First pressure sensor; 22. Second pressure sensor; 23. Controller. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0063] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0065] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0067] Unless otherwise specified, the term "or" is inclusive in this application. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, the condition "A or B" is satisfied by any of the following conditions: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0068] See Figures 2 to 7 The air conditioning unit of the battery energy storage device in this embodiment includes a refrigerant compression condenser unit, which includes a compressor 6, a condenser 5, a condenser fan 4, and a turbulence fan 18.

[0069] The condenser 5 is connected to the exhaust port of the compressor 6 and includes a plate-shaped first heat exchange section 5a; the condenser fan 4 is disposed on one side of the first heat exchange section 5a and is configured to allow heat exchange air to flow through the condenser 5; the turbulence fan 18 is disposed at one end of the condenser fan 4 along a first direction, the first direction being perpendicular to the axial direction of the condenser fan 4 and parallel to the first heat exchange section 5a, and the turbulence fan 18 is configured to deliver air along the first direction at least toward the side of the condenser fan 4 closest to the first heat exchange section 5a of the condenser 5.

[0070] In the technical solution of this application, when the air conditioning unit 3 is erected in front of the first wall panel 19 and the air inlet side of the condenser 5 is located facing the first wall panel 19, the turbulence fan 18 supplies air to the air inlet side of the condenser fan 4. Specifically, see [link to relevant documentation]. Figure 6 Alternatively, in configuration 7, the turbulence fan 18 supplies air along a first direction (approximately parallel to the first wall 19) towards the space between the condenser fan 4 and the first wall 19. The condenser fan 4 supplies air along its axial direction (perpendicular to the first wall 19) in a direction away from the first wall 19. When the airflow of the condenser fan 4 is large, the direction of the combined airflow from the turbulence fan 18 and the condenser fan 4 gradually deflects away from the first wall 19 towards a direction away from the turbulence fan 18 (i.e., downstream of the outlet direction of the turbulence fan 18). Correspondingly, more heat exchange air can be obtained at the position of the first heat exchange section 5a away from the turbulence fan 18 in the first direction. This helps to improve the problem of local overheating of the condenser 5 when the air intake effect is poor, which exists in related technologies. It also helps to make the air intake of the condenser more uniform throughout.

[0071] When the condenser fan 4 has a high air speed, the air drawn in by the turbulence fan 18 is mostly ambient fresh air. This is because when the condenser fan 4 has a high air speed, the air speed at the outlet is also high, making it easier for the turbulence fan 18 to draw in ambient air rather than the air blown out by the condenser fan.

[0072] The high wind speed and large air volume of the condenser fan 4 indicate that the unit's condensing temperature will be relatively high. At this time, the turbulence fan 18 effectively blows the ambient air between the condenser 5 and the wall panel, allowing more air to pass through the condenser and thus improving its heat exchange effect. This also helps to ensure uniform airflow.

[0073] In this embodiment, the condenser fan 4 is an axial flow fan, and the airflow direction of the condenser fan 4 is approximately consistent with its axis. The condenser fan 4 introduces heat exchange air from the gap between the air conditioning unit and the first wall 19 to cool the condenser 5. In some embodiments, the turbulence fan 4 is an axial flow fan, and the axis of the turbulence fan 4 is consistent with the first direction to deliver air into the gap between the condenser fan 4 and the first wall 19. See also Figure 6The turbulence fan 18 is directed toward the end of the first heat exchange section 5a along the first direction, and a portion of the air outlet of the turbulence fan 18 is located on the side of the first heat exchange section 5a away from the first fan 4.

[0074] The turbulence fan 18 faces one end of the first heat exchange section 5a. The direction of the airflow from the condenser fan 4 and the airflow from the turbulence fan 18 after merging is deflected away from the axial direction of the condenser fan 4. The lower the rotational speed of the condenser fan 4, the larger the angle between the merged airflow direction and the axial direction of the condenser fan 4. When the condenser fan 4 is off, only the turbulence fan 18 outputs airflow that flows approximately in the first direction.

[0075] The first heat exchanger 5 also includes a second heat exchange section 5b connected to the first heat exchange section 5a and located on the side of the first heat exchange section 5a near the condenser fan 4. The second heat exchange section 5b is located at the end of the first heat exchange section 5a near the turbulence fan 18 along the first direction. The second heat exchange section 5b is located between the turbulence fan 18 and the condenser fan 4 in the first direction.

[0076] The cross-section of the first heat exchanger 5 is roughly L-shaped. Air that exchanges heat with the condenser 5 can be introduced into the back (the side facing the first wall 19) and the side (the end with the turbulence fan along the first direction) of the air conditioning unit. This is beneficial to the condensation effect of the refrigerant in the condenser 5 and improves the cooling efficiency of the air conditioning unit.

[0077] The refrigerant compression condensing unit includes two or more condensing fans 4 arranged side by side along a first direction. Each of the multiple condensing fans 4 introduces air to the heat exchanger 5 in its opposite section. The air introduced by each condensing fan 4 is distributed in a roughly circular pattern. Therefore, there is a small airflow area around each condensing fan 4. The multiple condensing fans 4, compared to a single, larger condensing fan, effectively reduce the area of ​​small airflow, making the airflow into the condenser 4 relatively uniform. This improves the condensing efficiency of the condenser 5 and reduces the risk of localized high temperatures.

[0078] Furthermore, the power of the condenser fan 4 located at the end of the air conditioning unit along the first direction (e.g., the end equipped with a turbulence fan) can be greater than the power of the condenser fan 4 located closer to the end along the first direction. Since the back of the air conditioning unit is the first wall 19, most of the air introduced by the condenser fan 4 comes from the end along the first direction of the gap between the first wall 19 and the air conditioning unit. Setting the power of the condenser fan 4 located at the end along the first direction that is farther from the air conditioning unit to be larger helps to distribute the condensed air more evenly in the condenser 5.

[0079] The air conditioning unit includes two or more refrigerant compression and condensing units, which are arranged along a second direction that is perpendicular to the first direction and parallel to the first heat exchange section 5a.

[0080] Two or more refrigerant compression condensing units are arranged side by side in a plane parallel to the first heat exchange section 5a. The condensers 5 of the corresponding two or more refrigerant compression condensing units are also arranged side by side in the aforementioned plane. This is beneficial to increasing the overall air intake volume of the air conditioning unit and increasing the overall total area of ​​the condenser, which is beneficial to increasing the maximum cooling capacity of the air conditioning unit.

[0081] Each refrigerant compressor condensing unit includes a compressor 6, a condenser 5, a condensing fan 4, and a turbulence fan 18. Each refrigerant compressor condensing unit is independently controlled to start and stop, so the number of refrigerant compressor condensing units that need to be turned on can be selected according to the cooling capacity requirements, so as to avoid energy waste and reduce the energy consumption of the air conditioning unit.

[0082] The compressor 6 is located axially between the first heat exchange section 5a and the condenser fan 4, which makes the structure of the air conditioning unit more compact, which helps to reduce the overall volume of the air conditioning unit and reduce the space occupied.

[0083] The compressor 6 is characterized in that it is located between two adjacent condenser fans 4 in the first direction. This helps to reduce the impact of the compressor 6 on the intake air, ensures the condensing efficiency of the condenser, and improves the working efficiency of the air conditioning unit.

[0084] See Figure 6 The air conditioning unit is installed on one side of the first wall panel 19 and spaced apart from the first wall panel 19. The first wall panel 19 is located on the side of the first heat exchange section 5a away from the condenser fan 4. When the air conditioning unit 3 is erected in front of the first wall panel 19 and the air inlet side of the condenser 5 is located facing the first wall panel 19, the turbulence fan 18 supplies air to the air inlet side of the condenser fan 4. Specifically, the turbulence fan 18 supplies air between the condenser fan 4 and the first wall 19 along the first direction, and the condenser fan 4 supplies air along its axial direction away from the first wall 19. When the air volume of the condenser fan 4 is large, the direction of the combined airflow of the turbulence fan 18 and the condenser fan 4 gradually deflects away from the turbulence fan 18 along the direction away from the first wall 19. Correspondingly, more heat exchange air can also be obtained at the position of the first heat exchange section 5a away from the turbulence fan 18 in the first direction, which is beneficial to improving the problem of local overheating of the condenser 5 when the air inlet effect is poor in the related technology.

[0085] See Figure 7In some embodiments, a second wall panel 20 is provided at the end of the air conditioning unit away from the turbulence fan 18 along the first direction. The air conditioning unit is located at the corner enclosed by the second wall panel 20 and the first wall panel 19, and the turbulence fan 18 blows air towards the corner along the first direction, so that more air can flow through the end of the condenser 5 near the second wall panel 20, which helps to prevent the problem of local high temperature in the condenser 5 due to uneven distribution of condensing air.

[0086] The feature is that the turbulence fan 18 is further configured to blow a portion of the air that has exchanged heat with the condenser 5 toward the condenser 5. In some embodiments, the axis of the turbulence fan 18 is located on the side of the first heat exchange section 5a closer to the condenser fan 4. When the condenser fan 4 is rotating at a low speed, or even when the condenser fan is off, the turbulence fan 18 is further configured to blow a portion of the air that has exchanged heat with the condenser 5 toward the condenser 5.

[0087] When the ambient temperature is low, the cooling capacity required by the air conditioning unit is also small. Therefore, in order to reduce the energy consumption of the air conditioning unit, the speed of compressor 6 is generally adjusted to the lowest level. When the speed of compressor 6 is low, the pressure of the compressed refrigerant output is low, and correspondingly, the condensing pressure P in condenser 5 is lower. 冷凝 It is also relatively low, therefore it is prone to condensation pressure P. 冷凝 The evaporation pressure P of the refrigerant in evaporator 7a 蒸发 The pressure difference ΔP is less than the minimum pressure difference ΔP required for normal operation of the air conditioning unit. 最低值 The problem is that, in this embodiment, the turbulence fan 18 is also configured to blow a portion of the air that has exchanged heat with the condenser 5 toward the condenser 5 to increase the condensing pressure P. 冷凝 This allows the air conditioning unit to maintain the minimum pressure difference ΔP during normal operation. 最低值 The above measures are intended to ensure that the air conditioning unit can operate normally even at low temperatures, so as to regulate the temperature of heat-generating components (such as batteries) to a safe operating range.

[0088] See Figure 2 and 8 The air conditioning unit also includes a throttling component 13, an evaporator 7a, a first pressure sensor 21, a second pressure sensor 22, and a controller 23.

[0089] Throttling element 13 is connected to condenser 5. Evaporator 7a is connected to throttling element 13 and is configured to evaporate the throttled refrigerant therein. Optionally, throttling element 13 includes an electronic expansion valve.

[0090] The first pressure sensor 21 is configured to detect the condensing pressure P of the refrigerant inside the condenser 5. 冷凝 The second pressure sensor 22 is configured to detect the evaporation pressure P of the refrigerant within the evaporator 7a. 蒸发 .

[0091] The controller 23 is signal-connected to the turbulence fan 18, the first pressure sensor 21, and the second pressure sensor 22, respectively, and is configured to:

[0092] Response to ambient temperature T 环境 The condensing pressure P of the refrigerant in condenser 5 is below the first predetermined temperature. 冷凝 The evaporation pressure P of the refrigerant in evaporator 7a 蒸发 Pressure difference ΔP < ΔP 最低值 The turbulence fan 18 is controlled to rotate, causing some of the air that has exchanged heat with the condenser 5 to flow back to the condenser 5, so as to adjust the pressure difference ΔP to the target pressure difference ΔP. 目标 Target pressure difference ΔP 目标 >△P 最低 value.

[0093] At ambient temperature T 环境 Below the first predetermined temperature and the pressure difference ΔP < ΔP 最低值 At this time, the turbulence fan 18 uses a portion of the air that has exchanged heat with the condenser 5 to return to the condenser 5, thereby increasing the condensing pressure P and allowing the air conditioning unit to maintain the minimum pressure difference ΔP required for normal operation. 最低值 The above measures ensure that the air conditioning unit can operate normally even at low temperatures.

[0094] See Figure 2 In this embodiment, the air conditioning unit also includes a medium cooler 7 that cools a medium (e.g., water) used to cool heat-generating components (e.g., batteries). The medium cooler 7 includes the aforementioned evaporator 7a and a heat exchanger 7b through which the aforementioned medium flows. The evaporator 7a and the heat exchanger 7b exchange heat, so that the refrigerant in the evaporator 7a cools the medium in the heat exchanger 7b. Optionally, the medium cooler 7 includes a plate heat exchanger.

[0095] The heat exchanger 7b described above includes an inlet pipe 8 for introducing the medium to be cooled and an outlet pipe 9 for discharging the medium cooled by the evaporator 7a. The outlet pipe 9 delivers the cooled medium to the battery radiator to cool the battery.

[0096] Each refrigerant compressor-condenser unit also includes an intake temperature detection component 17 and a first switch disposed in the pipeline between the intake port of the compressor 6 and the evaporator 7a. Each refrigerant compressor-condenser unit also includes an exhaust temperature detection component 16 and a second switch 15 disposed in the pipeline between the exhaust port of the compressor 6 and the condenser 5. A liquid receiver 10 and a filter 12 are also disposed between the condenser 8 and the throttling component 13. In some embodiments, the refrigerant compressor-condenser unit also includes a radiator for dissipating heat from an Intelligent Power Module (IPM). The radiator is located between the liquid receiver 10 and the throttling component 13 in the refrigerant flow direction.

[0097] In some embodiments, the motor of compressor 6 is a variable frequency motor. By adjusting the frequency of the variable frequency motor of compressor 6, the rotational speed can be adjusted, thereby adjusting the compression efficiency of compressor 6. Of course, the motor of compressor 6 can also be other types of speed-adjustable motors, such as servo motors.

[0098] In some embodiments, the motor of the condenser fan 4 is a variable frequency motor. The speed can be adjusted by adjusting the frequency of the condenser fan motor, thereby adjusting the air volume of the condenser fan 4.

[0099] In some embodiments, the speed of the turbulence fan 18 is adjustable. Specifically, the motor of the turbulence fan 18 can be a variable frequency motor, a servo motor, or a motor with adjustable speed.

[0100] The specific control method for the air conditioning unit in this embodiment is as follows:

[0101] 1. Ambient temperature T 环境 When the second preset temperature is reached, the air conditioning unit will not start, and the controller 23 will issue a high temperature alarm. The second preset temperature is greater than the first preset temperature; optionally, the first preset temperature is 0℃, and the second preset temperature is 55℃.

[0102] 2. When 0℃ ≤ ambient temperature T 环温 At ≤55℃, the air conditioning unit starts normally, and the turbulence fan 18 does not need to operate.

[0103] 3. Turbidity fan speed adjustment (e.g., adjusting gear or frequency) and judgment criteria: When the ambient temperature T 环温 < First predetermined temperature, if compressor 6 is operating at its lowest compressor speed (minimum frequency) and condenser fan 4 is operating at its lowest condenser fan speed (minimum frequency), and pressure difference ΔP < ΔP 最低值 The controller 23 sends a command to the turbulence fan 18, which adjusts the speed (i.e., adjusts the rotation speed) and calculates the pressure difference ΔP in real time until ΔP ≥ the target pressure difference ΔP. 目标 Stop adjusting the turbulence fan 18.

[0104] Wherein, pressure difference ΔP = P 冷凝 -P 蒸发 , △P 最低值 The minimum safe differential pressure for reliable operation of compressor 6. Target differential pressure ΔP 目标 =△P 最低值 +P1 (P1 is the hysteresis, which is adjustable).

[0105] After the speed of the turbulence fan 18 is adjusted, some of the high-temperature exhaust air will backflow into the condenser 5, which will reduce the fresh air intake of the condenser 5 to a certain extent. The backflow of high-temperature hot air into the condenser 5 can increase the condensing temperature. At the same time, the high-temperature exhaust air recirculation creates a short circuit in the air duct at the condenser fan 4. The hot air returns from the fan outlet through the gap between the turbulence fan 18 and the fins of the condenser 5 to the inlet of the condenser fan 4, and the repeated circulation continuously increases the condensing temperature, thereby ensuring the establishment of condensing pressure at low ambient temperature.

[0106] The principles for adjusting the speed of compressor 6 (e.g., adjusting the frequency of the compressor motor), the speed of condenser fan (e.g., adjusting the frequency of the condenser fan motor), and the speed of turbulence fan 18 (adjusting the gear or adjusting the frequency of the turbulence fan 18 motor) are as follows:

[0107] a. The speed regulation of compressor 6, condenser fan 4, and turbulence fan 18 aims to adjust the pressure difference ΔP to the target pressure difference ΔP. 目标 At this point, the air conditioning unit's operational reliability is guaranteed, and energy consumption is minimized. Target pressure difference ΔP 目标 =△P 最低值 +P1 (P1 is the hysteresis, which is adjustable).

[0108] b. When compressor 6 operates at its lowest speed, and the pressure difference ΔP < ΔP 最低值 First, reduce the speed of the condenser fan 4, then increase the speed of the turbulence fan 18 to increase the condensing pressure of the refrigerant in the condenser 5, thereby adjusting the pressure difference ΔP to the target pressure difference ΔP. 目标 Prioritizing the reduction of condenser fan speed by 4 rpm to increase condensing pressure is beneficial for reducing energy consumption.

[0109] c. When the speed of compressor 6 exceeds the minimum compressor speed, the speed of compressor 6 is preferentially reduced. Optionally, controller 23 is signal-connected to compressor 6 and configured to: respond to ambient temperature T 环境 If the temperature is below the first predetermined temperature and the compressor speed of 6 is greater than the minimum compressor speed, then the compressor speed of 6 is controlled to decrease. After the compressor speed of 6 decreases to the minimum compressor speed, the pressure difference ΔP is adjusted to the target pressure difference ΔP by adjusting the speed of the condenser fan 4 or the turbulence fan 18. 目标Since the cooling capacity requirement of the air conditioning unit is small in low-temperature environments where the ambient temperature is lower than the first predetermined temperature, the speed of compressor 6 is reduced first, which helps to reduce energy consumption.

[0110] d. When the compressor has reached its minimum operating speed and the turbulence fan 18 has reached its maximum operating speed, the pressure difference ΔP still cannot reach the target pressure difference ΔP. 目标 If the ambient temperature is too low, the air conditioning unit will be shut off, and a warning will be issued. Controller 23 is also configured to respond to ambient temperature T. 环境 The temperature is below the first predetermined temperature, the compressor speed 6 is equal to the minimum compressor speed, the turbulence fan speed 18 reaches the maximum turbulence fan speed, and the pressure difference ΔP < ΔP. 最低值 If the compressor 6 is shut down, the cooling requirement of the battery will be smaller when the ambient temperature is too low. Shutting down the air conditioning unit helps to reduce energy consumption and protect the safety of the air conditioning unit, preventing it from operating under harsh conditions.

[0111] e. When the compressor runs to its minimum speed, the turbulence fan 18 has been adjusted to its minimum speed. At this time, if the pressure difference ΔP ≥ ΔP 最高值 The condenser fan speed is increased to improve the condensation efficiency of the refrigerant in the condenser. Controller 23 is also configured to respond to ambient temperature T. 环境 The temperature is below the first predetermined temperature, the compressor speed 6 is equal to the minimum compressor speed, the speed of the turbulence fan 18 reaches the minimum turbulence fan speed, and the pressure difference ΔP > ΔP. 最高值 Then, the speed of the condenser fan 4 is increased to improve the condensing efficiency in the condenser and reduce the pressure difference ΔP, so as to ensure the normal operation of the air conditioning unit.

[0112] f. When compressor 6 is running at a speed greater than the minimum compressor speed, the speed of turbulence fan 18 is greater than the minimum turbulence fan speed, and the speed of condenser fan 4 is greater than the minimum condenser fan speed, if ΔP 最低值 ≤△P<△P 最高值 If the ambient temperature T is high, the speed of compressor 6 will be reduced first, then the speed of condenser fan 4 will be reduced, and finally the speed of turbulence fan 18 will be adjusted. Controller 23 is also configured to respond to ambient temperature T. 环境 The temperature is below the first predetermined temperature, the speed of compressor 6 is greater than the minimum compressor speed, the speed of condenser fan 4 is greater than the minimum condenser fan speed, the speed of turbulence fan 18 is greater than the minimum turbulence fan speed, and ΔP 最低值 <Pressure difference ΔP<ΔP 最高值The compressor 6 is controlled to reduce its speed, followed by the condenser fan 4, and then the speed of the turbulence fan 18, according to their priority levels. Generally, the compressor 6 consumes more energy than the condenser fan 4, and the condenser fan 4 consumes more energy than the turbulence fan 18. Under low ambient temperatures, reducing the energy-intensive compressor 6 and condenser fan 4 to their lowest speeds first helps reduce the energy consumption of the air conditioning unit while ensuring its reliable operation.

[0113] 4. The start-up process of the air conditioning unit in this embodiment is as follows:

[0114] a. When -40℃≤T 环温 At temperatures below -30℃, after the start-up command is issued, first adjust the speed of the turbulence fan 18 to the lowest speed, start the compressor 6 to the preset start-up speed, and run it for 5-10 seconds. Then start the condenser fan 4 at the lowest speed. After the condenser fan 4 is started, run the compressor 6 to the highest speed. By increasing the heat generation of the compressor 6 motor and the hot air return at the condenser fan 4, the condensing pressure is quickly established. When the detected ΔP satisfies ΔP ≥ ΔP 最低值 When +P1 (P1 is the hysteresis, adjustable), gradually reduce the operating speed of compressor 6, and simultaneously adjust the speed of turbulence fan 18 to maintain ΔP meeting the target pressure difference P. 目标 .

[0115] b. When -30℃≤T 环温 At temperatures below -20℃, after the start-up command is issued, first adjust the speed of the turbulence fan 18 to a speed greater than the minimum speed (e.g., 2 / 3 of the maximum speed), then start the compressor 6 to the preset start-up speed. After running for 5-10 seconds, start the condenser fan 4 at its minimum speed. After the fan starts, run the compressor to its maximum speed. By increasing the compressor motor heating and the hot air recirculation at the fan, the condensing pressure is quickly established. When the detected ΔP satisfies ΔP ≥ ΔP 最低值 When +P1 (P1 is the hysteresis, adjustable), gradually reduce the compressor operating speed to the minimum speed, and simultaneously adjust the speed of the turbulence fan 18 to maintain ΔP. If the speed of the turbulence fan 18 is adjusted to the minimum, the pressure difference ΔP is still greater than ΔP. 最高值 This can increase the speed of the condenser fan 4.

[0116] c. When -20℃ ≤ ambient temperature < 0℃, after the start-up command is issued, first adjust the speed of the turbulence fan 18 to be greater than the minimum speed (e.g., 2 / 3 of the maximum speed), start the compressor 6 to the preset start-up speed, run for 5-10 seconds, and then start the condenser fan 4 to the intermediate speed. After the condenser fan is started, keep the compressor 6 running at the minimum speed. Through the hot air return at the condenser fan, the condensing pressure is quickly established. When the detected ΔP satisfies ΔP ≥ ΔP 最低值When +P1 (P1 is the hysteresis, which is adjustable), gradually reduce the fan speed to the minimum speed, and then adjust the turbulence fan speed according to △P.

[0117] As mentioned above, the start-up process of an air conditioning unit includes:

[0118] If the ambient temperature T 环境 The temperature is lower than the first predetermined temperature, and the third predetermined temperature is lower than the first predetermined temperature.

[0119] Adjust the compressor speed to its maximum value and turn on the turbulence fan;

[0120] The detected pressure difference ΔP is greater than the target pressure difference ΔP 目标 Then, adjust the speed of compressor 6 to the lowest value;

[0121] Adjust the speed of the condenser fan 4 and / or the speed of the turbulence fan 18 to adjust the pressure difference ΔP to the target pressure difference ΔP. 目标 Among them, reducing the speed of the condenser fan 4 increases the pressure difference ΔP, increasing the speed of the condenser fan 4 increases the pressure difference ΔP, reducing the wind speed of the turbulence fan 18 decreases the pressure difference ΔP, and increasing the wind speed of the turbulence fan 18 increases the pressure difference ΔP.

[0122] In this embodiment, during the start-up phase of the air conditioning unit, the turbulence fan 18 can blow the heat generated by the compressor 6 and the condenser fan 4 onto the condenser to increase the condensing pressure in the condenser 5, thereby enabling the pressure difference ΔP to reach the target pressure difference as quickly as possible, and thus enabling the air conditioning unit to reach normal operating status as quickly as possible.

[0123] According to another aspect of the present invention, a control method for the above-mentioned air conditioning unit is also provided, the control method comprising:

[0124] Obtain ambient temperature T 环境 and the condensing pressure P of the refrigerant in condenser 5 冷凝 The evaporation pressure P of the refrigerant in evaporator 7a 蒸发 ;

[0125] If the ambient temperature T 环境 Below the first predetermined temperature and condensation pressure P 冷凝 and evaporation pressure P 蒸发 Pressure difference ΔP < ΔP 最低值 The turbulence fan 18 is controlled to rotate, causing some of the air that has exchanged heat with the condenser 5 to flow back to the condenser 5, so as to adjust the pressure difference ΔP to the target pressure difference ΔP. 目标 Target pressure difference ΔP 目标 The minimum value of △P.

[0126] At ambient temperature T 环境 Below the first predetermined temperature and the pressure difference ΔP < ΔP 最低值At that time, the turbulence fan 18 is used to return part of the air that has exchanged heat with the condenser 5 to the condenser 5 to increase the condensing pressure P, so that the air conditioning unit can be maintained above the minimum pressure difference ΔP minimum value for normal operation, so that the air conditioning unit can operate normally even at low temperatures.

[0127] The control method also includes: if the ambient temperature T 环境 If the temperature is below the first predetermined temperature and the compressor speed of 6 is greater than the minimum compressor speed, then the compressor speed of 6 is controlled to decrease. After the compressor speed of 6 decreases to the minimum compressor speed, the pressure difference ΔP is adjusted to the target pressure difference ΔP by adjusting the speed of the condenser fan 4 or the turbulence fan 18. 目标 Since the cooling capacity requirement of the air conditioning unit is small in low-temperature environments where the ambient temperature is lower than the first predetermined temperature, the speed of compressor 6 is reduced first, which helps to reduce energy consumption.

[0128] In some embodiments, if the ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed 6 is equal to the minimum compressor speed, the turbulence fan speed 18 reaches the maximum turbulence fan speed, and the pressure difference ΔP < ΔP. 最低值 If the ambient temperature is too low, the compressor 6 will be shut down. When the ambient temperature is too low, the cooling requirement of the battery is relatively small. Shutting down the air conditioning unit helps to reduce energy consumption and protect the safety of the air conditioning unit, preventing it from operating under harsh conditions.

[0129] In some embodiments, if the ambient temperature T 环境 The temperature is below the first predetermined temperature, the compressor speed 6 is equal to the minimum compressor speed, the speed of the turbulence fan 18 reaches the minimum turbulence fan speed, and the pressure difference ΔP > ΔP. 最高值 Then, the speed of the condenser fan 4 is increased to improve the condensing efficiency in the condenser and reduce the pressure difference ΔP, so as to ensure the normal operation of the air conditioning unit.

[0130] In some embodiments, if the ambient temperature T 环境 The temperature is below the first predetermined temperature, the speed of compressor 6 is greater than the minimum compressor speed, the speed of condenser fan 4 is greater than the minimum condenser fan speed, the speed of turbulence fan 18 is greater than the minimum turbulence fan speed, and ΔP 最低值 <Pressure difference ΔP<ΔP 最高值 The compressor 6 is controlled to reduce its speed, followed by the condenser fan 4, and then the speed of the turbulence fan 18, according to their priority levels. Generally, the compressor 6 consumes more energy than the condenser fan 4, and the condenser fan 4 consumes more energy than the turbulence fan 18. Under low ambient temperatures, reducing the energy-intensive compressor 6 and condenser fan 4 to their lowest speeds first helps reduce the energy consumption of the air conditioning unit while ensuring its reliable operation.

[0131] The main utility model of this embodiment is as follows:

[0132] By installing a turbulence fan 18 on the side of the condenser 5 to blow air, the condenser 5 is ensured to have uniform air intake, avoiding local overheating and improving heat dissipation efficiency.

[0133] The intelligent control system adjusts the speed of the turbulence fan 18 and the speed of the condenser fan 4 at different levels, and dynamically adjusts the condensing pressure according to the condensing heat exchange effect, thereby improving the stability and reliability of the system.

[0134] By ensuring uniform air intake and intelligent control, localized overheating is reduced, extending the service life of the condenser and the entire system. Through intelligent control systems and dynamic adjustment of the fan, energy waste is reduced, achieving high efficiency and energy saving.

[0135] The fan speed is dynamically adjusted according to the ambient temperature and condenser temperature to improve the system's adaptability and reliability under different environmental conditions.

[0136] The system can be dynamically adjusted according to the actual load to achieve high efficiency and energy saving, and improve the system's flexibility and adaptability.

[0137] The above description is only an exemplary embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air conditioning unit with a battery energy storage device, characterized in that, Includes a refrigerant compression condensing unit, wherein the refrigerant compression condensing unit comprises: Compressor (6); The condenser (5) is connected to the exhaust port of the compressor (6) and includes a first heat exchange section (5a) in the form of a plate. A condenser fan (4) is provided on one side of the first heat exchange section (5a) and is configured to allow heat exchange air to flow through the condenser (5). A turbulence fan (18) is disposed at one end of the condenser fan (4) along a first direction, the first direction being perpendicular to the axial direction of the condenser fan (4) and parallel to the first heat exchange section (5a). The turbulence fan (18) is configured to deliver air along the first direction at least toward the side of the condenser fan (4) near the first heat exchange section (5a).

2. The air conditioning unit according to claim 1, characterized in that, The condenser (5) further includes a second heat exchange section (5b) connected to the first heat exchange section (5a) and located on the side of the first heat exchange section (5a) near the condenser fan (4). The second heat exchange section (5b) is located at one end of the first heat exchange section (5a) along the first direction near the turbulence fan (18). The second heat exchange section (5b) is located between the turbulence fan (18) and the condenser fan (4) in the first direction.

3. The air conditioning unit according to claim 1, characterized in that, The refrigerant compression condensing unit includes two or more condensing fans (4) arranged side by side along the first direction.

4. The air conditioning unit according to claim 1, characterized in that, It includes two or more refrigerant compression condensing units that are independently controlled to start and stop, and the two or more refrigerant compression condensing units are arranged in a second direction that is perpendicular to the first direction and parallel to the first heat exchange section (5a).

5. The air conditioning unit according to claim 1, characterized in that, The compressor (6) is located axially between the first heat exchange section (5a) and the condenser (4) of the condenser (4).

6. The air conditioning unit according to claim 1, characterized in that, The compressor (6) is located between two adjacent condenser fans (4) in the first direction.

7. The air conditioning unit according to claim 1, characterized in that, The air conditioning unit is installed on one side of the first wall panel (19) and spaced apart from the first wall panel (19). The first wall panel (19) is located on the side of the first heat exchange section (5a) away from the condenser fan (4). The air conditioning unit has a second wall panel (20) at the end away from the turbulence fan (18) along the first direction.

8. The air conditioning unit according to claim 1, characterized in that, The turbulence fan (18) is also configured to blow a portion of the air that has exchanged heat with the condenser (5) toward the condenser (5).

9. The air conditioning unit according to claim 8, characterized in that, Also includes: Throttling component (13) is connected to the condenser (5); An evaporator (7a) is connected to the throttling component (13) and is configured to evaporate the throttled refrigerant therein; The controller (23) is signal-connected to the turbulence fan (18) and configured to: Response to ambient temperature T 环境 The condensing pressure P of the refrigerant in the condenser (5) is below the first predetermined temperature. 冷凝 and the evaporation pressure P of the refrigerant in the evaporator (7a) 蒸发 Pressure difference ΔP < ΔP 最低值 The turbulence fan (18) is controlled to rotate, causing some of the air that has exchanged heat with the condenser (5) to flow back to the condenser (5), so as to adjust the pressure difference ΔP to the target pressure difference ΔP. 目标 The target pressure difference ΔP 目标 >△P 最低值 .

10. The air conditioning unit according to claim 9, characterized in that, The controller (23) and the compressor (6) are signal connected and are also configured to: Response to ambient temperature T 环境 If the temperature is below the first predetermined temperature and the speed of the compressor (6) is greater than the minimum speed of the compressor, then the speed of the compressor (6) is controlled to decrease.

11. The air conditioning unit according to claim 9, characterized in that, The controller (23) is also configured to respond to ambient temperature T 环境 The temperature is below the first predetermined temperature, the speed of the compressor (6) is equal to the minimum speed of the compressor, the speed of the turbulence fan (18) reaches the maximum speed of the turbulence fan, and the pressure difference ΔP < ΔP 最低值 If so, the compressor (6) will be shut down.

12. The air conditioning unit according to claim 9, characterized in that, The controller (23) is also configured to respond to ambient temperature T 环境 The temperature is below the first predetermined temperature, the speed of the compressor (6) is equal to the minimum speed of the compressor, the speed of the turbulence fan (18) reaches the minimum speed of the turbulence fan, and the pressure difference ΔP > ΔP. 最高值 Then, the rotation speed of the condenser fan (4) is increased.

13. The air conditioning unit according to claim 9, characterized in that, The controller (23) is also configured to respond to ambient temperature T 环境 The temperature is below the first predetermined temperature, the speed of the compressor (6) is greater than the minimum speed of the compressor, the speed of the condenser fan (4) is greater than the minimum speed of the condenser fan, the speed of the turbulence fan (18) is greater than the minimum speed of the turbulence fan, and ΔP 最低值 <pressure difference ΔP<ΔP 最高值 Then, according to the priority level, the compressor (6) is controlled to reduce its speed, the condenser fan (4) is controlled to reduce its speed, and the speed of the turbulence fan (18) is adjusted.

14. A battery energy storage device, characterized in that, An air conditioning unit including the battery energy storage device according to any one of claims 1 to 13.

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