Control method and system for heat exchanger unit

Abstract

Provided in the present disclosure are a control method and system for a heat exchanger unit. The control method comprises: on the basis of load information, determining a target condenser from among at least two condensers; on the basis of external environmental information, determining a target fan from a fan set corresponding to the target condenser; and on the basis of the current condensing temperature corresponding to the target condenser, controlling the operation of the target fan.

Description

Control method and system for heat exchanger unit

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202311536717.3, application date November 17, 2023, and invention name “Control method and system for heat exchanger unit”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this disclosure as a reference. Technical Field

[0003] The present disclosure relates to, but is not limited to, the field of energy storage technology, and in particular to a control method and system for a heat exchanger unit. Background Art

[0004] In related technologies, when the heat exchanger unit operates at partial load or full load, since the fans corresponding to all condensers operate at the same speed, the energy consumption and noise of the heat exchanger unit are high, which seriously affects the heat exchange effect and service life of the heat exchanger unit.

[0005] Summary of the Invention

[0006] The embodiments of the present disclosure provide a control method and system for a heat exchanger unit.

[0007] The technical solution of the embodiment of the present disclosure is implemented as follows:

[0008] An embodiment of the present disclosure provides a control method for a heat exchanger unit, wherein the heat exchanger unit includes at least two condensers and a corresponding fan unit disposed opposite each condenser. The method includes:

[0009] determining a target condenser from the at least two condensers based on the load information;

[0010] Based on the external environment information, determining a target fan from the fan group corresponding to the target condenser;

[0011] Based on the current condensing temperature corresponding to the target condenser, the operation of the target fan is controlled.

[0012] In some embodiments, controlling the operation of the target fan based on the current condensing temperature corresponding to the target condenser includes: determining the current operating frequency of the target fan based on the current condensing temperature corresponding to the target condenser; and controlling the operation of the target fan based on the current operating frequency.

[0013] In the embodiment of the present disclosure, on the one hand, the operating frequency of the target fan is determined in real time according to the current condensing temperature corresponding to the target condenser, thereby improving the accuracy of the operating frequency of the fan; on the other hand, the operation of the fan is controlled in real time according to the operating frequency of the fan, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while also meeting the requirements of low noise and low energy consumption.

[0014] In some embodiments, controlling the operation of the target fan based on the current operating frequency includes: when the current operating frequency is less than the minimum operating frequency corresponding to the target fan, updating the current operating power to the minimum operating frequency, and controlling the operation of the target fan according to the updated current operating power; when the current operating frequency is greater than the maximum operating frequency corresponding to the target fan, updating the current operating power to the maximum operating frequency, and controlling the operation of the target fan according to the updated current operating power.

[0015] In the embodiment of the present disclosure, the current operating frequency of the target fan is controlled to be not less than the minimum operating frequency and not greater than the maximum operating frequency to ensure that the fan operates within this range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption.

[0016] In some embodiments, determining the current operating frequency of the target fan based on the current condensing temperature corresponding to the target condenser includes: determining the difference between the current condensing temperature and the minimum condensing temperature corresponding to the target condenser; and determining the current operating frequency based on the difference and the minimum operating frequency corresponding to the target fan.

[0017] In the embodiment of the present disclosure, first, each condenser is set with a corresponding minimum condensing temperature, which improves the accuracy and specificity of the minimum condensing temperature compared to setting the same minimum condensing temperature; second, each fan is set with a corresponding minimum operating frequency, which improves the accuracy and specificity of the minimum operating frequency compared to setting the same minimum operating frequency; finally, the current operating frequency is determined based on the current condensing temperature, the minimum condensing temperature and the minimum operating frequency, which improves the accuracy of the current operating frequency of the fan.

[0018] In some embodiments, determining the current operating frequency based on the difference and the minimum operating frequency corresponding to the target fan includes: determining the product of the difference and a proportion coefficient; wherein the proportion coefficient is determined based on the operating frequency threshold corresponding to the target fan and the condensing temperature threshold corresponding to the target condenser; and determining the current operating frequency based on the sum of the product and the minimum operating frequency.

[0019] In the embodiment of the present disclosure, on the one hand, the proportion coefficient is determined by the operating frequency threshold and condensing temperature threshold corresponding to the fan, thereby improving the accuracy of the proportion coefficient; on the other hand, the current operating frequency is determined by the temperature difference, the proportion coefficient, and the minimum operating frequency corresponding to the fan, thereby improving the accuracy of the current operating frequency.

[0020] In some embodiments, determining the target fan from the fan group corresponding to the target condenser based on the external environmental information includes: when the external environmental information meets a first preset condition, based on the target condenser, determining the target fan from the fan group corresponding to the target condenser; when the external environmental information does not meet the first preset condition, determining a first fan from the fan group corresponding to the target condenser, and using the first fan as the target fan.

[0021] In the embodiment of the present disclosure, the target wind turbine is determined by comparing the external environment information with the first preset condition, which not only shortens the time for determining the target wind turbine, but also improves the accuracy of the target wind turbine.

[0022] In some embodiments, the target fan is determined from the fan group corresponding to the target condenser based on the target condenser, including: when the target condenser includes a first condenser, based on the current condensing temperature, the target fan is determined from the fan group corresponding to the first condenser; when the target condenser includes a second condenser, at least one fan in the fan group corresponding to the second condenser is used as a target fan; when the target condenser includes the first condenser and the second condenser, at least one fan in the fan group corresponding to the first condenser and at least one fan in the fan group corresponding to the second condenser are used as the target fan; wherein the power of the first condenser is different from the power of the second condenser.

[0023] In the embodiment of the present disclosure, first, different target condensers use different methods to determine the target fan, which improves the accuracy and specificity of the target fan compared to using the same method to determine it; secondly, the target fan corresponding to the first condenser is determined according to the current condensing temperature, which improves the accuracy of the target fan corresponding to the first condenser; thirdly, at least one fan corresponding to the second condenser is used as the target fan, which shortens the determination time of the target fan and improves the processing efficiency; finally, the target fan is determined from at least one fan corresponding to the first condenser and the second condenser, which not only shortens the determination time but also ensures accuracy.

[0024] In some embodiments, determining the target fan from the fan group corresponding to the first condenser based on the current condensing temperature includes: when the current condensing temperature meets a second preset condition, using at least one fan in the fan group corresponding to the first condenser as the target fan; when the current condensing temperature does not meet the second preset condition, determining a second fan from the fan group corresponding to the first condenser, and using the second fan as the target fan.

[0025] In the embodiment of the present disclosure, on the one hand, the current condensing temperature is compared with the second preset condition to determine the target fan corresponding to the first condenser, which not only shortens the determination time but also improves the accuracy of the target fan; on the other hand, different current condensing temperatures are selected in different determination methods, which can meet the requirements of low noise and low energy consumption while ensuring the heat exchange effect.

[0026] In some embodiments, the method further includes: updating the condensing temperature threshold corresponding to the target condenser based on the condenser configuration information to obtain an updated condensing temperature threshold; updating the current operating frequency based on the current condensing temperature and the updated condensing temperature threshold to obtain an updated current operating frequency; and controlling the operation of the target fan based on the updated current operating frequency.

[0027] In the embodiment of the present disclosure, the threshold information corresponding to the target condenser is adjusted in real time through the condenser configuration information. Compared with fixing the threshold information, the low noise and low energy consumption requirements of different users are met, thereby improving the user's operating experience.

[0028] The present disclosure also provides a control system for a heat exchanger unit, comprising a heat exchanger unit and a control device, wherein the heat exchanger unit comprises at least two condensers and a corresponding fan unit disposed opposite each condenser, wherein:

[0029] The control device is used to determine a target condenser from the at least two condensers based on load information; determine a target fan from the fan group corresponding to the target condenser based on external environment information; and control the operation of the target fan based on the current condensing temperature corresponding to the target condenser.

[0030] In some embodiments, the external environmental information includes external temperature information, the heat exchanger unit also includes a temperature acquisition component, and the control device is further used to control the temperature acquisition component to acquire the external temperature information; based on the external temperature information, the target fan is determined from the fan group corresponding to the target condenser.

[0031] In the embodiment of the present disclosure, on the one hand, by integrating the temperature acquisition component in the heat exchanger unit to obtain external temperature information in real time, compared with obtaining the external temperature information from other devices, not only the communication distance is reduced and the accuracy of the external temperature information is improved, but also the use scenarios of the heat exchanger unit are broadened; on the other hand, the target fan is determined by the external temperature information, thereby improving the accuracy of the target fan.

[0032] In some embodiments, the heat exchanger unit also includes a pressure collection component; the control device is also used to control the pressure collection component to collect the current condensing pressure inside the heat exchanger unit; using a preset correspondence relationship, a target condensing temperature matching the current condensing pressure is determined, and the target condensing temperature is used as the current condensing temperature; wherein the correspondence relationship represents the relationship between at least one condensing pressure and the corresponding condensing temperature.

[0033] In the embodiment of the present disclosure, on the one hand, by integrating the pressure acquisition component in the heat exchanger unit to obtain the current condensing pressure in real time, compared with obtaining the current condensing pressure from other devices, not only the communication distance is reduced and the accuracy of the current condensing pressure is improved, but also the use scenario of the heat exchanger unit is broadened; on the other hand, the set corresponding relationship is used to determine the target condensing temperature that matches the current condensing pressure, which not only shortens the time for determining the condensing temperature, but also improves the accuracy of the condensing temperature.

[0034] In some embodiments, the control device is further configured to: determine a current operating frequency of the target fan based on a current condensing temperature corresponding to the target condenser; and control the operation of the target fan based on the current operating frequency.

[0035] In the embodiment of the present disclosure, on the one hand, the operating frequency of the target fan is determined in real time according to the current condensing temperature corresponding to the target condenser, thereby improving the accuracy of the operating frequency of the fan; on the other hand, the operation of the fan is controlled in real time according to the operating frequency of the fan, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while also meeting the requirements of low noise and low energy consumption.

[0036] In some embodiments, the control device is further used to: when the current operating frequency is less than the minimum operating frequency corresponding to the target fan, update the current operating power to the minimum operating frequency, and control the operation of the target fan according to the updated current operating power; when the current operating frequency is greater than the maximum operating frequency corresponding to the target fan, update the current operating power to the maximum operating frequency, and control the operation of the target fan according to the updated current operating power.

[0037] In the embodiment of the present disclosure, the current operating frequency of the target fan is controlled to be not less than the minimum operating frequency and not greater than the maximum operating frequency to ensure that the fan operates within this range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption.

[0038] In some embodiments, the control device is further used to: determine the difference between the current condensing temperature and the minimum condensing temperature corresponding to the target condenser; and determine the current operating frequency based on the difference and the minimum operating frequency corresponding to the target fan.

[0039] In the embodiment of the present disclosure, first, each condenser is set with a corresponding minimum condensing temperature, which improves the accuracy and specificity of the minimum condensing temperature compared to setting the same minimum condensing temperature; second, each fan is set with a corresponding minimum operating frequency, which improves the accuracy and specificity of the minimum operating frequency compared to setting the same minimum operating frequency; finally, the current operating frequency is determined based on the current condensing temperature, the minimum condensing temperature and the minimum operating frequency, which improves the accuracy of the current operating frequency of the fan.

[0040] In some embodiments, the control device is further used to: determine the product between the difference and the proportion coefficient; wherein the proportion coefficient is determined based on the operating frequency threshold corresponding to the target fan and the condensing temperature threshold corresponding to the target condenser; and determine the current operating frequency based on the sum of the product and the minimum operating frequency.

[0041] In the embodiment of the present disclosure, on the one hand, the proportion coefficient is determined by the operating frequency threshold and condensing temperature threshold corresponding to the fan, thereby improving the accuracy of the proportion coefficient; on the other hand, the current operating frequency is determined by the temperature difference, the proportion coefficient, and the minimum operating frequency corresponding to the fan, thereby improving the accuracy of the current operating frequency.

[0042] In some embodiments, the at least two condensers are spaced apart along a first direction, and each condenser is spaced apart from the corresponding fan unit by a preset distance along a second direction to form a cavity; wherein the second direction is perpendicular to the first direction.

[0043] In the embodiment of the present disclosure, each condenser is arranged on one side along the thickness direction and opposite to the fan. On the one hand, the size of the heat exchanger unit along the width direction is reduced, making the structural arrangement of the heat exchanger unit more compact and reasonable; on the other hand, the airflow in the external environment does not need to be reversed after heat exchange with the condenser and can be discharged under the action of the fan. The airflow discharge path is short, thereby reducing the load of the fan.

[0044] In some embodiments, the heat exchanger unit further includes a partition assembly, which is disposed in the cavity and arranged along the second direction, and is used to divide the cavity into at least two sub-spaces that are not connected to each other. Each of the sub-spaces is respectively connected to the corresponding condenser and the corresponding fan unit to separate the airflow in the cavity.

[0045] In the embodiment of the present disclosure, the cavity is divided into multiple unconnected sub-spaces by a partition assembly at a separation position. The airflow after heat exchange can only flow in each sub-space, and the corresponding airflow is discharged under the action of the corresponding fan in each sub-space. This can reduce the probability of turbulence in the airflow after heat exchange in the cavity due to the action of fans at different positions, increase the uniformity and stability of the airflow, and thus reduce the noise generated by the fan and the load of the fan, thereby achieving the purpose of energy saving and noise reduction.

[0046] In some embodiments, the heat exchange unit also includes at least two independent refrigerant circuits, and each refrigerant circuit is provided with a corresponding condenser; the control device is also used to control the operation of the target refrigerant circuit corresponding to the target condenser, so as to utilize the target refrigerant circuit and the target fan to deliver the airflow in the subspace connected to the target condenser.

[0047] In the embodiment of the present disclosure, by providing a plurality of independently operated refrigerant circuits, the airflow after heat exchange can be discharged under the fan corresponding to each refrigerant circuit, thereby improving the heat exchange effect of the heat exchange unit.

[0048] The present disclosure also provides a control method for a heat exchanger unit, which is applied to a heat exchanger unit including at least two condensers and a corresponding fan unit disposed opposite each condenser. The method includes:

[0049] The heat exchange unit receives a current operating frequency of a target fan; wherein the current operating frequency is determined based on a current condensing temperature corresponding to a target condenser, the target condenser is determined from the at least two condensers based on load information, and the target fan is determined from the fan group corresponding to the target condenser based on external environment information;

[0050] The target wind turbine is operated according to the current operating frequency.

[0051] In the embodiment of the present disclosure, a target condenser is determined from the at least two condensers based on load information; a target fan is determined from the fan group corresponding to the target condenser based on external environment information; and the operation of the target fan is controlled based on the current condensing temperature corresponding to the target condenser. In this way, firstly, the target condenser is determined in real time based on the load information, which not only meets the load demand but also reduces the power consumption of the heat exchanger unit. At the same time, by deploying multiple condensers in the heat exchanger unit to adapt to different load demands, the use scenarios of the heat exchanger unit are broadened and the user needs can be better met. Secondly, the target fan is determined in real time based on the external environment information. Compared with turning on all fans, the accuracy of the target fan is improved while reducing the operating energy consumption of the heat exchanger unit. Finally, the operation of the target fan is controlled in real time based on the current condensing temperature corresponding to the target condenser, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption, thereby extending the service life of the heat exchanger unit.

[0052] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to explain the technical solutions of the present disclosure.

[0054] FIG1 is a schematic diagram of a first implementation flow of a control method for a heat exchanger unit provided by an embodiment of the present disclosure;

[0055] FIG2 is a second schematic diagram of an implementation flow of a control method for a heat exchanger unit provided by an embodiment of the present disclosure;

[0056] FIG3 is a third schematic diagram of an implementation flow of a control method for a heat exchanger unit provided by an embodiment of the present disclosure;

[0057] FIG4 is a schematic diagram of the composition structure of a control system of a heat exchanger unit provided by an embodiment of the present disclosure;

[0058] FIG5 is a schematic diagram of the composition structure of a heat exchange unit provided by an embodiment of the present disclosure;

[0059] FIG6 is a schematic diagram of the composition of an energy storage device provided in an embodiment of the present disclosure;

[0060] FIG7 is a fourth schematic diagram of a flow chart of a control method for a heat exchanger unit according to an embodiment of the present disclosure;

[0061] FIG8 is a fifth schematic diagram of the implementation flow of a control method for a heat exchanger unit provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting the present disclosure. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0063] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0064] In the following description, the terms "first\second\third" are used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first\second\third" can be interchanged with the specific order or sequence where permitted, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the art of the present disclosure. The terms used herein are only for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0066] The energy storage device is used to collect and store excess energy that is temporarily unused for a period of time in some way, and then release and utilize the energy at a specific time or place to improve energy utilization. The energy storage device can be provided with an energy storage bin, which contains a battery pack. During the use of the battery cells in the battery pack, a large amount of heat is usually generated. Therefore, a heat exchange unit and a coolant circuit are provided in the energy storage device. The heat exchange unit can exchange heat with the coolant circuit with the help of the heat exchange circuit to absorb at least part of the heat in the coolant. The cooled coolant cools the battery cells to reduce the risk of overheating of the battery cells. The energy storage bin can be an energy storage container or an energy storage unit in an energy storage container, and the heat exchange unit can be set independently of the energy storage bin. When the energy storage bin is an energy storage container, the heat exchange unit can be located outside the energy storage container and work as an independent module. When the energy storage bin is an energy storage unit in an energy storage container, the heat exchange unit can work as a module in the energy storage container.

[0067] In related technologies, when the heat exchanger unit operates at partial load or full load, since the fans corresponding to all condensers operate at the same speed, the energy consumption and noise of the heat exchanger unit are high, which seriously affects the heat exchange effect and service life of the heat exchanger unit.

[0068] The embodiment of the present disclosure provides a control method for a heat exchanger unit. First, the target condenser is determined in real time according to the load information, which not only meets the load demand but also reduces the power consumption of the heat exchanger unit. At the same time, by deploying multiple condensers in the heat exchanger unit to adapt to different load demands, the use scenarios of the heat exchanger unit are broadened and can better meet user needs. Secondly, the target fan is determined in real time according to the external environment information. Compared with turning on all fans, the accuracy of the target fan is improved while the operating energy consumption of the heat exchanger unit is reduced. Finally, the operation of the target fan is controlled in real time according to the current condensing temperature corresponding to the target condenser, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption, thereby extending the service life of the heat exchanger unit. The method provided by the embodiment of the present disclosure can be executed by a control device or a heat exchanger unit. The heat exchanger unit can be a device of any suitable type and any suitable scenario. In some embodiments, the heat exchange unit further has a control device, which may include but is not limited to a programmable logic controller (PLC), a host computer, an intermediate computer, etc.

[0069] Below, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure.

[0070] FIG1 is a schematic diagram of a first implementation flow of a control method for a heat exchanger provided in an embodiment of the present disclosure, which is applied to a control device. The heat exchanger includes at least two condensers and a corresponding fan unit disposed opposite each condenser. As shown in FIG1 , the control method includes steps S11 to S13, wherein:

[0071] Step S11: Determine a target condenser from the at least two condensers based on load information.

[0072] Here, different condensers can have the same or different powers. For example, the at least two condensers include a first condenser with a first power and a second condenser with a second power, wherein the first power is different from the second power, such as, the first power is greater than the second power, or the first power is less than the second power.

[0073] Each condenser's corresponding fan group may include at least one fan. In implementation, the number of fans included in the fan groups corresponding to different condensers may be the same or different. For example, the fan group corresponding to the first condenser may include four fans, and the fan group corresponding to the second condenser may include two fans.

[0074] The load information may be any appropriate information related to power. For example, the load information is power information. During implementation, the power of the target condenser is not less than the load information.

[0075] The number of target condensers may be at least one. For example, if the power of the first condenser is 25 kW (kilowatts) and the power of the second condenser is 15 kW, then if the load information is 20 kW, only the first condenser may be used as the target condenser, or both the first condenser and the second condenser may be used as the target condenser.

[0076] Step S12: Based on the external environment information, determine a target fan from the fan group corresponding to the target condenser.

[0077] Here, the external environment information may be any appropriate environment information, such as temperature, humidity, etc.

[0078] The number of fan groups corresponding to the target condenser may be at least one. In some embodiments, for a high-power condenser, multiple fan groups are required for heat exchange; for a low-power condenser, heat exchange can be performed by one fan group.

[0079] The number of target wind turbines may be at least one. In implementation, the target wind turbine may be a certain wind turbine, a plurality of wind turbines, or all wind turbines in the wind turbine group.

[0080] In some embodiments, if the external environment information meets a first preset condition, the target fan is determined based on the target condenser. If the external environment information does not meet the first preset condition, the target fan is determined from multiple fans in the fan group. The first preset condition can be any suitable condition and, in implementation, is adapted to the external environment information. For example, if the external environment information includes an external temperature, the first preset condition can be a temperature not less than a preset temperature. The preset temperature can be any suitable temperature and, in implementation, can be set based on user-defined settings, empirical values, or a heat exchanger unit. For example, if the external temperature is greater than the preset temperature, the target fan is determined based on the target condenser and the condensing temperature corresponding to the target condenser. If the external temperature is less than the preset temperature, the target fan is determined based on preset rules. Preset rules may include, but are not limited to, the electronic device's system configuration, user-defined settings, usage frequency, user operation information, and aging level. For example, the target fan is configured through a preset configuration interface. In another example, a fan with a certain identifier is set as the target fan by default. For another example, different operation attributes correspond to different target wind turbines, and the operation attributes may include but are not limited to type, duration, step length, force, etc.

[0081] Step S13: Control the operation of the target fan based on the current condensing temperature corresponding to the target condenser.

[0082] Here, the current condensing temperature may be collected in real time or received from other devices. The current condensing temperatures corresponding to different target condensers may be the same or different.

[0083] Controlling the operation of the target fan includes controlling an operating parameter of the target fan to be within a set range. The operating parameter may be any suitable parameter, such as frequency, speed, etc. For example, based on the current condensing temperature, the operating frequency of the target fan may be adjusted to be within a frequency range. Specifically, if the current condensing temperature indicates that the operating frequency of the target fan is not within the frequency range, the operating frequency of the target fan may be adjusted to be within the frequency range.

[0084] In the embodiment of the present disclosure, first, the target condenser is determined in real time according to the load information, which not only meets the load demand but also reduces the power consumption of the heat exchanger unit. At the same time, by deploying multiple condensers in the heat exchanger unit to adapt to different load demands, the use scenarios of the heat exchanger unit are broadened, which can better meet user needs; secondly, the target fan is determined in real time according to the external environmental information. Compared with turning on all fans, the accuracy of the target fan is improved while the operating energy consumption of the heat exchanger unit is reduced; finally, the operation of the target fan is controlled in real time according to the current condensing temperature corresponding to the target condenser, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption, thereby extending the service life of the heat exchanger unit.

[0085] In some embodiments, the method further includes steps S141 to S143, wherein:

[0086] Step S141: Based on the condenser configuration information, the condensing temperature threshold corresponding to the target condenser is updated to obtain an updated condensing temperature threshold.

[0087] Here, the condenser configuration information may include any appropriate content, such as the target demand and the condensing temperature threshold corresponding to the target fan under the current demand. The target / current demand may include but is not limited to silent demand, high energy efficiency demand, etc. The condensing temperature threshold may include but is not limited to the minimum condensing temperature, the maximum condensing temperature, etc. The updating method of the condensing temperature threshold may include but is not limited to raising or lowering. If the target demand is a high energy efficiency demand, the condensing temperature threshold can be lowered until the high air volume and high energy efficiency demand are met. For another example, when the target demand is a silent demand, the condensing temperature threshold can be raised until the silent demand is met.

[0088] Step S142: Based on the current condensing temperature and the updated condensing temperature threshold, the current operating frequency of the target fan is updated to obtain an updated current operating frequency.

[0089] Here, the current operating frequency may be updated in a manner including, but not limited to, increasing or decreasing. In some embodiments, the current operating frequency of the target fan is adjusted according to a preset adjustment period of the target fan. In implementation, different target fans may have the same or different adjustment periods.

[0090] Step S143: Control the operation of the target wind turbine based on the updated current operating frequency.

[0091] Here, the speed of the target fan is adjusted according to the current operating frequency of the target fan, and the target fan is controlled to operate at the speed. In some embodiments, the speed adapted to the current operating frequency can be obtained based on a predetermined correspondence between the operating frequency and the speed.

[0092] In the embodiment of the present disclosure, the threshold information corresponding to the target condenser is adjusted in real time through the condenser configuration information. Compared with fixing the threshold information, the low noise and low energy consumption requirements of different users are met, thereby improving the user's operating experience.

[0093] FIG2 is a second schematic flow chart of a control method for a heat exchanger provided in an embodiment of the present disclosure, which is applied to a control device. The heat exchanger includes at least two condensers and a corresponding fan unit disposed opposite each condenser. As shown in FIG2 , the control method includes steps S21 to S24, wherein:

[0094] Step S21 : determining a target condenser from the at least two condensers based on load information.

[0095] Step S22: Based on the external environment information, determine a target fan from the fan group corresponding to the target condenser.

[0096] Here, the above steps S21 to S22 correspond to the above steps S11 to S12 respectively. When implementing, please refer to the specific implementation of the above steps S11 to S12.

[0097] Step S23: Determine the current operating frequency of the target fan based on the current condensing temperature corresponding to the target condenser.

[0098] Here, the current condensing temperature can be collected in real time by the heat exchanger unit or sent by other devices. Different condensing temperatures correspond to different operating frequencies.

[0099] In some implementations, the current operating frequency corresponding to the current condensing temperature may be determined in real time through a pre-established mapping relationship, where the mapping relationship represents the relationship between the condensing temperature and the operating frequency.

[0100] In some implementations, the mapping relationship can be expressed by the following formula (1-1): f(n)=f(l)+K(T c -T min ) (1-1);

[0101] Among them, f(n) is the current operating frequency of the target fan, f(l) is the minimum operating frequency corresponding to the target fan, T c is the current condensing temperature corresponding to the target condenser, T min is the minimum condensing temperature corresponding to the target condenser, and K is the proportion coefficient.

[0102] The proportion coefficient is determined based on the operating frequency threshold corresponding to the target fan and the condensing temperature threshold corresponding to the target condenser. In some embodiments, the proportion coefficient may be determined by methods including, but not limited to, a first ratio, a weighted / rounded / logarithmic / exponential calculation of the first ratio, and the like. The first ratio is the ratio of the difference between the operating frequency thresholds and the difference between the condensing temperature thresholds. The operating frequency thresholds include a minimum operating frequency and a maximum operating frequency, and the condensing temperature thresholds include a minimum condensing temperature and a maximum condensing temperature. For example, the first ratio is used as the proportion coefficient.

[0103] In some embodiments, different target fans may correspond to the same or different mapping relationships. For example, the mapping relationship may be the same for multiple fans in the same unit, but different for multiple fans in different units. For another example, the mapping relationship may be the same for all fans. For another example, the mapping relationship may be the same for multiple fans corresponding to the same condenser.

[0104] In some embodiments, a relationship table between multiple condensing temperatures and multiple operating frequencies can be pre-established. Using this relationship table, the current operating frequency that matches the current condensing temperature can be quickly determined. During implementation, if the current condensing temperature is included in the relationship table, the operating frequency corresponding to the current condensing temperature is used as the current operating frequency. If the current condensing temperature is not included in the relationship table, the operating frequency corresponding to the condensing temperature closest to the current condensing temperature, or the average of the operating frequencies corresponding to multiple condensing temperatures that are relatively close to the current condensing temperature, can be used as the current operating frequency.

[0105] In some embodiments, different target fans may correspond to the same or different relationship tables. For example, the relationship tables may be the same for multiple fans in the same unit, but different for multiple fans in different units. For another example, the relationship tables for multiple fans corresponding to the same condenser may be the same.

[0106] In some implementations, the current operating frequency may be determined by the current condensing temperature, a condensing temperature threshold corresponding to the target condenser, and a minimum operating frequency corresponding to the target fan.

[0107] In some embodiments, step S23 includes steps S231 to S232, wherein:

[0108] Step S231: Determine the difference between the current condensing temperature and the minimum condensing temperature corresponding to the target condenser.

[0109] Here, the difference is the difference between the current condensation temperature and the lowest condensation temperature. In some embodiments, the difference T can be determined by the following formula (1-2): d , that is: T d =T c -T min (1-2);

[0110] Among them, T c is the current condensing temperature corresponding to the target condenser, T min is the minimum condensing temperature corresponding to the target condenser.

[0111] Step S232: Determine the current operating frequency based on the difference and the minimum operating frequency corresponding to the target wind turbine.

[0112] Here, the current operating frequency may be determined by, but is not limited to, a sum value, weighting, rounding, logarithm, or exponential calculation of the sum value. The sum value may be the sum of the product and the minimum operating frequency, and the product is the product of the difference and the ratio coefficient.

[0113] In some embodiments, step S232 includes steps S2321 to S2322, wherein:

[0114] Step S2321: Determine the product of the difference and the proportion coefficient.

[0115] Here, the proportion factor is determined based on the operating frequency threshold corresponding to the target fan and the condensing temperature threshold corresponding to the target condenser. In some embodiments, the proportion factor may be determined by, but is not limited to, a first ratio, a weighted value, a rounded value, a logarithm value, or an exponential value of the first ratio. The first ratio is the ratio of the difference between the operating frequency thresholds and the difference between the condensing temperature thresholds.

[0116] In some embodiments, the proportion coefficient K can be determined by the following formula (1-3), namely:

[0117] Among them, f(h) is the maximum operating frequency corresponding to the target fan, f(l) is the minimum operating frequency corresponding to the target fan, T min is the minimum condensing temperature corresponding to the target condenser, T max is the minimum condensing temperature corresponding to the target condenser.

[0118] The product is the product of the difference and the proportion coefficient. In some embodiments, the product P can be determined by the following formula (1-4), that is: P = K * T d (1-4);

[0119] Among them, T d is the difference, and K is the proportion coefficient.

[0120] Step S2322: Determine the current operating frequency based on the sum of the product and the minimum operating frequency.

[0121] Here, the current operating frequency may be determined by, but is not limited to, the sum value, weighting / rounding / logarithm / exponential calculation of the sum value, etc. For example, the sum value is used as the current operating frequency.

[0122] In some implementations, the current operating frequency f(n) may be determined by the following formula (1-5), namely: f(n)=f(l)+P (1-5);

[0123] Where f(l) is the minimum operating frequency corresponding to the target wind turbine, and P is the product.

[0124] In this way, on the one hand, the proportion coefficient is determined by the operating frequency threshold and condensing temperature threshold corresponding to the fan, thereby improving the accuracy of the proportion coefficient; on the other hand, the current operating frequency is determined by the temperature difference, the proportion coefficient, and the minimum operating frequency corresponding to the fan, thereby improving the accuracy of the current operating frequency.

[0125] In an embodiment of the present disclosure, the current operating frequency is determined by determining the difference between the current condensing temperature and the minimum condensing temperature corresponding to the target condenser; based on the difference and the minimum operating frequency corresponding to the target fan. First, each condenser is set with a corresponding minimum condensing temperature, which improves the accuracy and specificity of the minimum condensing temperature compared to setting the same minimum condensing temperature for all condensers. Second, each fan is set with a corresponding minimum operating frequency, which improves the accuracy and specificity of the minimum operating frequency compared to setting the same minimum operating frequency for all fans. Finally, the current operating frequency is determined based on the current condensing temperature, the minimum condensing temperature, and the minimum operating frequency, thereby improving the accuracy of the current operating frequency of the fan.

[0126] Step S24: Control the operation of the target wind turbine based on the current operating frequency.

[0127] Here, the speed of the target fan is adjusted according to the current operating frequency of the target fan, and the target fan is controlled to operate at the speed. If the current operating frequency of the target fan is not within the frequency range, the current operating frequency of the target fan needs to be adjusted to be within the frequency range.

[0128] In some embodiments, step S24 includes step S241 and / or step S242, wherein:

[0129] Step S241: When the current operating frequency is less than the minimum operating frequency corresponding to the target wind turbine, the current operating power is updated to the minimum operating frequency, and the operation of the target wind turbine is controlled according to the updated current operating power.

[0130] Here, different target wind turbines correspond to the same or different operating frequency thresholds. The operating frequency thresholds may include, but are not limited to, a minimum operating frequency and a maximum operating frequency. If the current operating frequency is less than the minimum operating frequency, the current operating frequency needs to be adjusted to the minimum operating frequency so that the target wind turbine operates at the minimum operating frequency.

[0131] Step S242: When the current operating frequency is greater than the maximum operating frequency corresponding to the target wind turbine, the current operating power is updated to the maximum operating frequency, and the operation of the target wind turbine is controlled according to the updated current operating power.

[0132] Here, if the current operating frequency is greater than the maximum operating frequency, the current operating frequency needs to be adjusted to the maximum operating frequency so that the target wind turbine operates at the maximum operating frequency.

[0133] In this way, by controlling the current operating frequency of the target fan to be not less than the minimum operating frequency and not greater than the maximum operating frequency, the fan is ensured to operate within this range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption.

[0134] In the embodiment of the present disclosure, on the one hand, the operating frequency of the target fan is determined in real time according to the current condensing temperature corresponding to the target condenser, thereby improving the accuracy of the operating frequency of the fan; on the other hand, the operation of the fan is controlled in real time according to the operating frequency of the fan, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while also meeting the requirements of low noise and low energy consumption.

[0135] FIG3 is a third schematic flow chart of a control method for a heat exchanger provided in an embodiment of the present disclosure, which is applied to a control device. The heat exchanger includes at least two condensers and a corresponding fan unit disposed opposite each condenser. As shown in FIG3 , the control method includes steps S31 to S34, wherein:

[0136] Step S31 : determining a target condenser from the at least two condensers based on load information.

[0137] Here, the above step S31 corresponds to the above step S11. When implementing, reference may be made to the specific implementation of the above step S11.

[0138] Step S32: When the external environment information satisfies a first preset condition, based on the target condenser, determine a target fan from the fan group corresponding to the target condenser.

[0139] Here, the external environment information may be any suitable environment information, such as temperature, humidity, etc. The first preset condition may be any suitable condition. During implementation, the first preset condition is adapted to the external environment information.

[0140] The number of target wind turbines may be at least one. In implementation, the target wind turbine may be a certain wind turbine, a plurality of wind turbines, or all wind turbines in the wind turbine group.

[0141] The method for determining the target fan may include but is not limited to the number of target condensers, the power of the target condenser, the current condensing temperature corresponding to the target condenser, etc. In some embodiments, the number of the target condensers may be at least one, and the power of each condenser may be different. For example, the target condenser includes a first condenser and / or a second condenser, wherein the power of the first condenser is different from the power of the second condenser. For example, the power of the first condenser is greater than the power of the second condenser, for example, the power of the first condenser is 25KW, and the power of the second condenser is 15KW, then the fan group corresponding to the first condenser may include at least one group, and the fan group corresponding to the second condenser may be one group.

[0142] In some embodiments, the step S32 of “determining the target fan from the fan group corresponding to the target condenser based on the target condenser” includes at least one of steps S321 to S323, wherein:

[0143] Step S321: When the target condenser includes a first condenser, determine the target fan from the fan group corresponding to the first condenser based on the current condensing temperature.

[0144] Here, the number of fan groups corresponding to the first condenser can be at least one, for example, two. Each fan group can include at least one fan, for example, two fans. Then, the number of fans corresponding to the first condenser is four. In some embodiments, different numbers or different fans are selected for different condensing temperatures.

[0145] In some embodiments, the step S321 of “determining the target fan from the fan group corresponding to the first condenser based on the current condensing temperature” includes step S3211 and / or step S3212, wherein:

[0146] Step S3211: When the current condensing temperature satisfies a second preset condition, at least one fan in the fan group corresponding to the first condenser is used as the target fan.

[0147] Here, the second preset condition can be any suitable condition, for example, a temperature greater than a set temperature threshold. During implementation, all fans in the fan group corresponding to the first condenser can be used as a target fan. During implementation, since the current condensing temperature is relatively high, all fans corresponding to the first condenser can be turned on to rapidly exchange heat.

[0148] Step S3212: When the current condensing temperature does not meet the second preset condition, determine a second fan from the fan group corresponding to the first condenser, and use the second fan as the target fan.

[0149] Here, the second fan can be determined according to preset rules. The number of the second fans can be at least two. The preset rules may include but are not limited to the system configuration of the electronic device, user customization, frequency of use, user operation information, degree of aging, etc. For example, by default, the two fans in the first fan group are respectively used as a second fan. For another example, different operating attributes correspond to different second fans, and the operating attributes may include but are not limited to type, duration, step length, strength, etc. For another example, the two fans with a smaller degree of aging in the first condenser are respectively used as a second fan. During implementation, since the current condensing temperature is low, some fans corresponding to the first condenser can be turned on to reduce the power of the fan and improve the energy efficiency of the system operation.

[0150] In this way, on the one hand, the current condensing temperature is compared with the second preset condition to determine the target fan corresponding to the first condenser, which not only shortens the determination time but also improves the accuracy of the target fan; on the other hand, different current condensing temperatures select different determination methods, which can ensure the heat exchange effect while meeting the requirements of low noise and low energy consumption.

[0151] Step S322: When the target condenser includes the second condenser, use at least one fan in the fan group corresponding to the second condenser as a target fan.

[0152] Here, the power of the second condenser is different from the power of the first condenser. In some embodiments, the power of the second condenser is less than the power of the first condenser. During implementation, due to the high ambient temperature, all fans corresponding to the second condenser can be turned on to quickly exchange heat.

[0153] Step S323: When the target condenser includes the first condenser and the second condenser, at least one fan in the fan group corresponding to the first condenser and at least one fan in the fan group corresponding to the second condenser are both used as the target fan.

[0154] Here, the number of the target fans is at least two. When the heat exchange unit is running at full load, due to the high ambient temperature, all fans corresponding to all condensers need to be turned on to quickly exchange heat.

[0155] In an embodiment of the present disclosure, when the target condenser includes a first condenser, based on the current condensing temperature, the target fan is determined from the fan group corresponding to the first condenser; when the target condenser includes a second condenser, at least one fan in the fan group corresponding to the second condenser is used as a target fan; when the target condenser includes the first condenser and the second condenser, at least one fan in the fan group corresponding to the first condenser and at least one fan in the fan group corresponding to the second condenser are used as a target fan. In this way, firstly, different target condensers use different methods to determine the target fan, which improves the accuracy and pertinence of the target fan compared to using the same method to determine them all; secondly, the target fan corresponding to the first condenser is determined based on the current condensing temperature, which improves the accuracy of the target fan corresponding to the first condenser; thirdly, at least one fan corresponding to the second condenser is used as the target fan, which shortens the target fan determination time and improves processing efficiency; finally, the target fan is determined from at least one fan corresponding to the first condenser and the second condenser, which not only shortens the determination time but also ensures accuracy.

[0156] Step S33: When the external environment information does not satisfy the first preset condition, determine a first fan from the fan group corresponding to the target condenser, and use the first fan as the target fan.

[0157] Here, the first fan can be determined according to preset rules, and the number of the first fans can be at least one. The preset rules may include but are not limited to the system configuration of the electronic device, user customization, frequency of use, user operation information, degree of aging, etc. For example, the fan with a preset mark in the first fan group is used as the first fan by default. For another example, different operating attributes correspond to different first fans, and the operating attributes may include but are not limited to type, duration, step length, strength, etc. For another example, the fan with the least degree of aging in the target condenser is used as the first fan. During implementation, since the current ambient temperature is low, some fans corresponding to some condensers can be turned on to reduce the power of the fans and improve the energy efficiency of the system operation.

[0158] Step S34: Control the operation of the target fan based on the current condensing temperature corresponding to the target condenser.

[0159] Here, the above step S34 corresponds to the above step S13. When implementing, the specific implementation of the above step S13 can be referred to.

[0160] In the embodiment of the present disclosure, the target wind turbine is determined by comparing the external environment information with the first preset condition, which not only shortens the time for determining the target wind turbine, but also improves the accuracy of the target wind turbine.

[0161] Based on the above embodiments, the present disclosure further provides a control system for a heat exchanger. FIG4 is a schematic diagram of the structure of a control system for a heat exchanger provided in the present disclosure. As shown in FIG4 , the control system 40 includes a heat exchanger 41 and a control device 42. The heat exchanger 41 includes at least two condensers 411 and a corresponding fan unit 412 disposed opposite each condenser 411, wherein:

[0162] The control device 42 is used to determine the target condenser from the at least two condensers based on load information; determine the target fan from the fan group corresponding to the target condenser based on external environment information; and control the operation of the target fan based on the current condensing temperature corresponding to the target condenser.

[0163] Here, the control device 42 can be any suitable device capable of implementing this function. For example, a PLC. The load information can be any suitable power-related information. Different condensers can have the same or different power. The number of target condensers can be at least one. The method for the control device 42 to determine the target condenser can be found in the specific implementation of step S11 described above. The number of target fans can also be at least one. The method for the control device 42 to determine the target fan can be found in the specific implementation of step S12, or steps S32 to S33 described above. The control device 42 to control the operation of the target fan can be found in the specific implementation of step S13, or steps S23 to S24 described above.

[0164] In some embodiments, the at least two condensers are spaced apart along a first direction, and each condenser is spaced apart from the corresponding fan unit by a preset distance along a second direction to form a cavity; wherein the second direction is perpendicular to the first direction.

[0165] Here, the first direction may be a thickness direction of the heat exchange unit, and the second direction may be a width direction of the heat exchange unit. The preset distance may be any appropriate distance.

[0166] In this way, each condenser is arranged on one side along the thickness direction and opposite to the fan. On the one hand, the size of the heat exchanger unit along the width direction is reduced, making the structural layout of the heat exchanger unit more compact and reasonable; on the other hand, the airflow in the external environment does not need to be reversed after heat exchange with the condenser and can be discharged under the action of the fan. The airflow discharge path is short, thereby reducing the load of the fan.

[0167] In some embodiments, the heat exchanger unit 41 also includes a partition assembly; the partition assembly is disposed in the cavity and arranged along the second direction, and is used to divide the cavity into at least two sub-spaces that are not connected to each other, and each of the sub-spaces is respectively connected to the corresponding condenser and the corresponding fan unit to separate the airflow in the cavity.

[0168] Here, the number of partition assemblies may be at least one. The number of subspaces is adapted to the number of partition assemblies. For example, when there is one partition assembly, the number of subspaces may be two; when there are two partition assemblies, the number of subspaces may be three. In some embodiments, the position of the partition assembly may be fixed or rotatable. For example, the position of the partition assembly may be adjusted by any suitable drive mechanism.

[0169] FIG5 is a schematic diagram of the composition structure of a heat exchange unit provided in an embodiment of the present disclosure. As shown in FIG5 , the heat exchange unit 41 includes a first condenser 411a, a second condenser 411b, a first fan unit 412a and a second fan unit 412b corresponding to the first condenser 411a, a third fan unit 412c corresponding to the second condenser 411b, and a partition assembly 413, wherein:

[0170] The first condenser 411a and the second condenser 411b are arranged along the first direction Y;

[0171] The first fan group 412a, the second fan group 412b, and the third fan group 412c are arranged at intervals along the first direction Y;

[0172] The partition assembly 413 is located in the cavity 414 and arranged along the second direction X, dividing the cavity 414 into a subspace 4141 and a subspace 4142. During implementation, the airflow between the subspace 4141 and the subspace 4142 only flows in the corresponding subspace, and there is no possibility of turbulence, return air short circuit, etc.

[0173] In this way, the cavity is divided into multiple unconnected sub-spaces by the partition assembly at the separation position. The airflow after heat exchange can only flow in each sub-space, and the corresponding airflow is discharged under the action of the fans corresponding to each sub-space. This can reduce the probability of turbulence in the airflow after heat exchange in the cavity due to the action of fans at different positions, increase the uniformity and stability of the airflow, and thus reduce the noise generated by the fan and the load of the fan, thereby achieving the purpose of energy saving and noise reduction.

[0174] In some embodiments, the heat exchange unit 41 also includes at least two independent refrigerant circuits, and each refrigerant circuit is provided with a corresponding condenser; the control device 42 is also used to control the operation of the target refrigerant circuit corresponding to the target condenser, so as to utilize the target refrigerant circuit and the target fan to deliver the airflow in the subspace connected to the target condenser.

[0175] Here, the refrigerant circuit is used to exchange heat with airflow in the external environment. The airflow after heat exchange flows in the corresponding subspace and is discharged from the subspace under the wind force of the target fan. In implementation, the number of the refrigerant circuits is adapted to the number of the condensers.

[0176] FIG6 is a schematic diagram of the composition of an energy storage device provided in an embodiment of the present disclosure. As shown in FIG6 , the storage device includes a first refrigerant circuit 421, a second refrigerant circuit 422, and an energy storage system 423, wherein:

[0177] When the first refrigerant circuit 421 is in operation, the refrigerant in the first refrigerant circuit 421 exchanges heat with the coolant in the water circuit through the first plate exchanger 4211. The refrigerant absorbs heat and becomes a low-pressure superheated gas. After passing through the first steam separator 4212, it is compressed into a high-temperature, high-pressure gas by the first compressor 4213. The heat of the high-temperature, high-pressure gas is then transferred to the air through the condensing fan 4215 corresponding to the first condenser 411a. After the high-temperature, high-pressure gas releases heat in the first condenser 411a, it becomes a high-pressure saturated liquid or a supercooled liquid. After passing through the first liquid storage tank 4216 and the first throttle valve 4217, it becomes a low-temperature, low-pressure two-phase flow mixture. After evaporation and heat absorption through the first plate exchanger 4211, it enters the first compressor 4213, completing the refrigerant cycle and realizing the transfer of heat from the energy storage system 423 to the outside world. After the temperature of the coolant in the water circuit is reduced, it enters the energy storage system 423 for battery heat dissipation.

[0178] When the first refrigerant circuit 422 is in working condition, the refrigerant in the second refrigerant circuit 422 and the coolant in the water circuit exchange heat through the second plate exchanger 4221. The refrigerant absorbs heat and becomes a low-pressure superheated gas. After passing through the second steam separator 4222, it is compressed into a high-temperature and high-pressure gas by the second compressor 4223. The heat of the high-temperature and high-pressure gas is then transferred to the air through the condensing fan 4225 corresponding to the second condenser 411b. After the high-temperature and high-pressure gas releases heat in the second condenser 411b, it becomes a high-pressure saturated liquid or a supercooled liquid. After passing through the second liquid storage tank 4226 and the second throttle valve 4227, it becomes a low-temperature and low-pressure two-phase flow mixture. After evaporation and heat absorption through the second plate exchanger 4221, it enters the second compressor 4223, completing the refrigerant circulation and realizing the transfer of heat from the energy storage system 423 to the outside world. After the temperature of the coolant in the water circuit is reduced, it enters the energy storage system 423 for battery heat dissipation.

[0179] In this way, by providing a plurality of independently operated refrigerant circuits, the airflow after heat exchange can be discharged under the fans corresponding to each refrigerant circuit, thereby improving the heat exchange effect of the heat exchange unit.

[0180] In some embodiments, the external environmental information includes external temperature information, and the heat exchanger unit 41 also includes a temperature acquisition component; the control device 42 is also used to control the temperature acquisition component to collect the external temperature information; based on the external temperature information, the target fan is determined from the fan group corresponding to the target condenser.

[0181] Here, the temperature acquisition component can be any suitable component capable of acquiring temperature, such as a temperature sensor. In some embodiments, the control device 42 can send an acquisition instruction to the temperature acquisition component, causing it to acquire current external temperature information. The acquisition instruction can include any suitable content and is used to acquire external temperature information. In implementation, the manner in which the control device 42 determines the target wind turbine can be found in the detailed description of steps S32 and S33 above.

[0182] In this way, on the one hand, by integrating the temperature acquisition component in the heat exchanger unit to obtain external temperature information in real time, compared with obtaining the external temperature information from other devices, not only the communication distance is reduced and the accuracy of the external temperature information is improved, but also the use scenarios of the heat exchanger unit are broadened; on the other hand, the target fan is determined by the external temperature information, thereby improving the accuracy of the target fan.

[0183] In some embodiments, the heat exchanger unit 41 also includes a pressure collection component; the control device 42 is also used to control the pressure collection component to collect the current condensing pressure inside the heat exchanger unit; using a preset correspondence, a target condensing temperature matching the current condensing pressure is determined, and the target condensing temperature is used as the current condensing temperature.

[0184] Here, the pressure collection component can be any suitable component capable of collecting pressure, such as a pressure sensor. In some embodiments, the control device 42 can send a collection instruction to the pressure collection component to cause the pressure collection component to collect the current condensing pressure. The collection instruction can include any suitable content and is used to collect the current condensing pressure.

[0185] This correspondence represents the relationship between at least one condensing pressure and the corresponding condensing temperature. During implementation, this correspondence can be pre-established, and then, based on this correspondence, a condensing temperature matching the current condensing pressure can be obtained. In some embodiments, if the current condensing pressure is included in the correspondence, the condensing temperature corresponding to the current condensing pressure is used as the target condensing temperature; if the current condensing pressure is not included in the correspondence, the condensing temperature corresponding to the condensing pressure closest to the current condensing pressure, or the average of the condensing temperatures corresponding to multiple condensing pressures relatively close to the current condensing pressure, can be used as the target condensing temperature.

[0186] In this way, on the one hand, by integrating the pressure acquisition component in the heat exchanger unit to obtain the current condensing pressure in real time, compared with obtaining the current condensing pressure from other devices, not only the communication distance is reduced and the accuracy of the current condensing pressure is improved, but also the use scenarios of the heat exchanger unit are broadened; on the other hand, the set corresponding relationship is used to determine the target condensing temperature that matches the current condensing pressure, which not only shortens the time for determining the condensing temperature, but also improves the accuracy of the condensing temperature.

[0187] FIG7 is a fourth flow chart of a control method for a heat exchanger unit according to an embodiment of the present disclosure. As shown in FIG7 , the method includes steps S411 to S427, wherein:

[0188] Step S411: determining a target condenser from the first condenser and the second condenser according to the load information;

[0189] Step S412: using the temperature acquisition component to obtain the external environment temperature (corresponding to the aforementioned external environment information);

[0190] Step S413: determine whether the external ambient temperature meets the first preset condition. If so, proceed to step S414; otherwise, proceed to step S421.

[0191] Step S414: determine whether the number of the target condenser is one, if so, proceed to step S415, otherwise, proceed to step S420;

[0192] Step S415: determine whether the target condenser is the first condenser. If so, proceed to step S416; otherwise, proceed to step S419;

[0193] Step S416: Determine whether the current condensation temperature meets the second preset condition. If so, proceed to step S417; otherwise, proceed to step S418.

[0194] Step S417: All fans in the fan group corresponding to the first condenser are used as a target fan, and the process proceeds to step S424;

[0195] Step S418: Set the two fans (corresponding to the aforementioned second fan) in the first fan group of the fan group corresponding to the first condenser as target fans respectively, and proceed to step S424;

[0196] Step S419: All fans in the fan group corresponding to the second condenser are used as a target fan, and the process proceeds to step S424;

[0197] Step S420: All fans in the fan group corresponding to the first condenser and all fans in the fan group corresponding to the second condenser are taken as a target fan, and the process proceeds to step S424;

[0198] Step S421, determining whether the target condenser is the first condenser, if so, proceeding to step S422, otherwise, proceeding to step S423;

[0199] Step S422: Use the first fan (corresponding to the aforementioned first fan) in the fan group corresponding to the first condenser as the target fan, and proceed to step S424;

[0200] Step S423: Use the first fan (corresponding to the aforementioned first fan) in the fan group corresponding to the second condenser as the target fan, and proceed to step S424;

[0201] Step S424: using the pressure acquisition component to obtain the current condensation pressure;

[0202] Step S425: using the preset corresponding relationship, determine the target condensing temperature that matches the current condensing pressure, and use the target condensing temperature as the current condensing temperature;

[0203] Step S426: determining the current operating frequency of the target fan according to the current condensing temperature;

[0204] Here, the method for determining the current operating frequency may refer to the specific implementation of the aforementioned step S23.

[0205] Step S427: Control the operation of the target fan according to the current operating frequency of the target fan.

[0206] Here, the current operating frequency of the target wind turbine is adjusted to be within a set frequency range.

[0207] In some implementations, the condensing temperature threshold corresponding to the target condenser may be dynamically adjusted according to the condenser configuration information.

[0208] In the embodiment of the present disclosure, first, the target condenser is determined in real time according to the load information, which not only meets the load demand but also reduces the power consumption of the heat exchanger unit. At the same time, by deploying multiple condensers in the heat exchanger unit to adapt to different load demands, the use scenarios of the heat exchanger unit are broadened, which can better meet user needs; secondly, the target fan is determined in real time according to the external environmental information. Compared with turning on all fans, the accuracy of the target fan is improved while the operating energy consumption of the heat exchanger unit is reduced; finally, the operation of the target fan is controlled in real time according to the current condensing temperature corresponding to the target condenser, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption, thereby extending the service life of the heat exchanger unit.

[0209] FIG8 is a fifth flow chart of a control method for a heat exchanger provided in an embodiment of the present disclosure, which is applied to a heat exchanger, wherein the heat exchanger includes at least two condensers and a corresponding fan unit disposed opposite each condenser. As shown in FIG8 , the control method includes steps S51 to S52, wherein:

[0210] Step S51, the heat exchanger unit receives the current operating frequency of the target fan; wherein, the current operating frequency is determined based on the current condensing temperature corresponding to the target condenser, the target condenser is determined from the at least two condensers based on load information, and the target fan is determined from the fan group corresponding to the target condenser based on external environment information.

[0211] Here, the heat exchange unit can communicate with the control device in real time to obtain the current operating frequency of the target fan. The target fan and the current operating frequency can be determined by referring to the specific implementation of the above steps S21 to S24.

[0212] Step S52: operating the target wind turbine according to the current operating frequency.

[0213] Here, the target wind turbine operates according to the current operating frequency.

[0214] In the embodiment of the present disclosure, first, the target condenser is determined in real time according to the load information, which not only meets the load demand but also reduces the power consumption of the heat exchanger unit. At the same time, by deploying multiple condensers in the heat exchanger unit to adapt to different load demands, the use scenarios of the heat exchanger unit are broadened, which can better meet user needs; secondly, the target fan is determined in real time according to the external environmental information. Compared with turning on all fans, the accuracy of the target fan is improved while the operating energy consumption of the heat exchanger unit is reduced; finally, the operation of the target fan is controlled in real time according to the current condensing temperature corresponding to the target condenser, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption, thereby extending the service life of the heat exchanger unit.

[0215] It should be understood that references to "one embodiment" or "an embodiment" throughout this specification mean that specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present disclosure. Therefore, the appearance of "in one embodiment" or "in an embodiment" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of the present disclosure, the order of execution of the above-mentioned processes does not necessarily indicate a precedence in execution. The execution order of each process should be determined by its function and inherent logic and should not constitute any limitation on the implementation of the embodiments of the present disclosure. The above-mentioned numbers of the embodiments of the present disclosure are for descriptive purposes and do not represent the superiority or inferiority of the embodiments. It should be noted that, in this document, the terms "comprise," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprises an..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising such elements.

[0216] In the several embodiments provided in this disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are illustrative. For example, the division of the units described is a logical functional division. In actual implementation, other division methods may be used, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not implemented. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms. The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, the functional units in the embodiments of this disclosure can be all integrated into a processing unit, or each unit can be a separate unit, or two or more units can be integrated into a single unit; the above-mentioned integrated units can be implemented in the form of hardware or hardware plus software functional units.

[0217] The above is an implementation mode of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present disclosure, and they should all be covered by the protection scope of the present disclosure. Industrial Applicability

[0218] An embodiment of the present disclosure provides a control method and system for a heat exchanger unit, wherein the heat exchanger unit includes at least two condensers and a corresponding fan unit arranged relative to each of the condensers. The control method includes: determining a target condenser from the at least two condensers based on load information; determining a target fan from the fan units corresponding to the target condensers based on external environmental information; and controlling the operation of the target fan based on the current condensing temperature corresponding to the target condenser. In this way, firstly, the target condenser is determined in real time according to the load information, which not only meets the load demand but also reduces the power consumption of the heat exchanger unit. At the same time, by deploying multiple condensers in the heat exchanger unit to adapt to different load demands, the use scenarios of the heat exchanger unit are broadened, which can better meet user needs; secondly, the target fan is determined in real time according to the external environmental information. Compared with turning on all fans, the accuracy of the target fan is improved while the operating energy consumption of the heat exchanger unit is reduced; finally, the operation of the target fan is controlled in real time according to the current condensing temperature corresponding to the target condenser, so that the fan operates within the set operating frequency range, thereby ensuring the heat exchange effect while meeting the requirements of low noise and low energy consumption, thereby extending the service life of the heat exchanger unit.

Claims

1. A control method for a heat exchange unit, the heat exchange unit comprising at least two condensers and a corresponding fan unit arranged relative to each of the condensers, the method comprising: determining a target condenser from the at least two condensers based on the load information; Based on the external environment information, determining a target fan from the fan group corresponding to the target condenser; Based on the current condensing temperature corresponding to the target condenser, the operation of the target fan is controlled.

2. The control method according to claim 1, wherein: The controlling the operation of the target fan based on the current condensing temperature corresponding to the target condenser includes: Determining a current operating frequency of the target fan based on a current condensing temperature corresponding to the target condenser; Based on the current operating frequency, the operation of the target wind turbine is controlled.

3. The control method according to claim 2, wherein: The controlling the operation of the target fan based on the current operating frequency includes: When the current operating frequency is less than the minimum operating frequency corresponding to the target wind turbine, the current operating power is updated to the minimum operating frequency, and the operation of the target wind turbine is controlled according to the updated current operating power; When the current operating frequency is greater than the maximum operating frequency corresponding to the target wind turbine, the current operating power is updated to the maximum operating frequency, and the operation of the target wind turbine is controlled according to the updated current operating power.

4. The control method according to claim 2 or 3, wherein: The determining the current operating frequency of the target fan based on the current condensing temperature corresponding to the target condenser includes: Determine a difference between the current condensing temperature and a minimum condensing temperature corresponding to the target condenser; The current operating frequency is determined based on the difference and the minimum operating frequency corresponding to the target wind turbine.

5. The control method according to claim 4, wherein: The determining the current operating frequency based on the difference and the minimum operating frequency corresponding to the target wind turbine includes: Determine the product between the difference and the proportion coefficient; wherein the proportion coefficient is determined based on the operating frequency threshold corresponding to the target fan and the condensing temperature threshold corresponding to the target condenser; The current operating frequency is determined based on a sum of the product and the minimum operating frequency.

6. The control method according to any one of claims 1 to 5, wherein: The step of determining the target fan from the fan group corresponding to the target condenser based on the external environment information includes: In the case where the external environment information satisfies a first preset condition, based on the target condenser, determining the target fan from the fan group corresponding to the target condenser; When the external environment information does not satisfy the first preset condition, a first fan is determined from the fan group corresponding to the target condenser, and the first fan is used as the target fan.

7. The control method according to claim 6, wherein: The step of determining the target fan from the fan group corresponding to the target condenser based on the target condenser includes: In a case where the target condenser includes a first condenser, based on the current condensing temperature, determining the target fan from the fan group corresponding to the first condenser; In the case where the target condenser includes a second condenser, at least one fan in the fan group corresponding to the second condenser is As a target wind turbine; In the case where the target condenser includes the first condenser and the second condenser, at least one fan in the fan group corresponding to the first condenser and at least one fan in the fan group corresponding to the second condenser are both used as the target fan; The power of the first condenser is different from the power of the second condenser.

8. The control method according to claim 7, wherein: The determining the target fan from the fan group corresponding to the first condenser based on the current condensing temperature includes: When the current condensing temperature satisfies a second preset condition, at least one fan in the fan group corresponding to the first condenser is used as the target fan; When the current condensing temperature does not satisfy the second preset condition, a second fan is determined from the fan group corresponding to the first condenser, and the second fan is used as the target fan.

9. The control method according to any one of claims 1 to 8, wherein: The method further comprises: Based on the condenser configuration information, the condensing temperature threshold corresponding to the target condenser is updated to obtain an updated condensing temperature threshold; Based on the current condensing temperature and the updated condensing temperature threshold, updating the current operating frequency of the target fan to obtain an updated current operating frequency; Based on the updated current operating frequency, the operation of the target wind turbine is controlled.

10. A control system for a heat exchange unit, comprising a heat exchange unit and a control device, wherein the heat exchange unit comprises at least two condensers and a corresponding fan unit arranged opposite to each of the condensers, wherein: The control device is used to determine a target condenser from the at least two condensers based on load information; and to determine a target fan from the fan group corresponding to the target condenser based on external environment information; Based on the current condensing temperature corresponding to the target condenser, the operation of the target fan is controlled.

11. The control system according to claim 10, wherein: The external environment information includes external temperature information, and the heat exchange unit further includes a temperature acquisition component, wherein: The control device is further used to control the temperature acquisition component to acquire the external temperature information; based on the external temperature information, determine the target fan from the fan group corresponding to the target condenser.

12. The control system according to claim 10 or 11, wherein: The heat exchange unit also includes a pressure collection component; The control device is also used to control the pressure collection component to collect the current condensing pressure inside the heat exchanger unit; use a preset corresponding relationship to determine a target condensing temperature that matches the current condensing pressure, and use the target condensing temperature as the current condensing temperature; wherein the corresponding relationship characterizes the relationship between at least one condensing pressure and the corresponding condensing temperature.

13. A control system according to any one of claims 10 to 12, wherein: The control device is also used for: Based on the current condensing temperature corresponding to the target condenser, the current operating frequency of the target fan is determined; and based on the current operating frequency, the operation of the target fan is controlled.

14. The control system according to claim 13, wherein: The control device is also used for: When the current operating frequency is less than the minimum operating frequency corresponding to the target wind turbine, the current operating power is updated to the minimum operating frequency, and the operation of the target wind turbine is controlled according to the updated current operating power; When the current operating frequency is greater than the maximum operating frequency corresponding to the target wind turbine, the current operating power is updated to The maximum operating frequency is determined, and the operation of the target wind turbine is controlled according to the updated current operating power.

15. The control system according to claim 13 or 14, wherein: The control device is also used for: Determine a difference between the current condensing temperature and a minimum condensing temperature corresponding to the target condenser; The current operating frequency is determined based on the difference and the minimum operating frequency corresponding to the target wind turbine.

16. The control system according to claim 15, wherein: The control device is also used for: Determine the product between the difference and the proportion coefficient; wherein the proportion coefficient is determined based on the operating frequency threshold corresponding to the target fan and the condensing temperature threshold corresponding to the target condenser; The current operating frequency is determined based on a sum of the product and the minimum operating frequency.

17. A control system according to any one of claims 10 to 16, wherein: The at least two condensers are arranged at intervals along the first direction, and each of the condensers is spaced a preset distance from the corresponding fan unit along the second direction to form a cavity; wherein the second direction is perpendicular to the first direction.

18. The control system according to claim 17, wherein: The heat exchange unit further comprises a baffle assembly, wherein: The partition assembly is disposed in the cavity and arranged along the second direction, and is used to divide the cavity into at least two sub-spaces that are not connected to each other. Each of the sub-spaces is respectively connected to the corresponding condenser and the corresponding fan unit to separate the airflow in the cavity.

19. A control system according to any one of claims 10 to 18, wherein: The heat exchange unit further comprises at least two refrigerant circuits which are independent of each other, and each of the refrigerant circuits is provided with a corresponding condenser; The control device is further used to control the operation of the target refrigerant circuit corresponding to the target condenser, so as to use the target refrigerant circuit and the target fan to send out the airflow in the subspace connected to the target condenser.

20. A control method for a heat exchange unit, applied to a heat exchange unit, wherein the heat exchange unit comprises at least two condensers and a corresponding fan unit arranged relative to each of the condensers, the method comprising: The heat exchange unit receives the current operating frequency of the target fan; wherein the current operating frequency is determined based on the current condensing temperature corresponding to the target condenser, the target condenser is determined from the at least two condensers based on load information, and the target fan is determined from the fan group corresponding to the target condenser based on external environment information; The target fan is operated according to the current operating frequency.

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