Auxiliary heating control method and device of heat pump system and heat pump system

Abstract

The application provides an auxiliary heating control method, an auxiliary heating control device and a heat pump system. The auxiliary heating control method comprises the following steps: determining that the heat pump system is in a heating mode, acquiring an actual hot water temperature in a hot water tank in the heat pump system; determining an ambient temperature control strategy required to be executed by the heat pump system according to an interval range in which a difference between the actual hot water temperature and a preset target hot water temperature is located; and controlling the working state of a compressor and an auxiliary heating device in the heat pump system according to the ambient temperature control strategy and an external temperature in a current outdoor environment, wherein the auxiliary heating device is installed in the hot water tank and adds auxiliary heating to the hot water tank. The auxiliary heating control method, the auxiliary heating control device and the heat pump system can more accurately adjust the running state of the auxiliary heating device by simultaneously monitoring the outdoor environment temperature and the heating speed of the hot water in the hot water tank, so that the system energy consumption is reduced while the rapid heating is ensured.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and in particular to an auxiliary heat control method, auxiliary heat control device, and heat pump system for a heat pump system. Background Technology

[0002] In related technologies, air source heat pumps can produce hot water even when the external ambient temperature is extremely low. However, the heat production efficiency of a heat pump varies depending on the external ambient temperature; at lower temperatures, the heat pump's heating efficiency is relatively low. In such cases, most heat pump products will use electric heating for auxiliary heating to improve the system's heating efficiency.

[0003] However, compared to heat pumps, electric heating has lower heating capacity and energy consumption. Traditional electric heating auxiliary heating control has high energy consumption and low system energy efficiency. Therefore, traditional heat pump systems cannot balance heating efficiency and overall system energy efficiency, and cannot simultaneously achieve energy saving and meet users' heating needs, resulting in a poor user experience and higher energy consumption. Summary of the Invention

[0004] This invention provides an auxiliary heating control method, auxiliary heating control device, and heat pump system for a heat pump system, which addresses the deficiencies in the prior art and achieves the following technical effects: by simultaneously monitoring the outdoor ambient temperature and the heating rate of the hot water in the hot water tank, the operating status of the auxiliary heating device can be adjusted more precisely, thereby reducing system energy consumption while ensuring rapid heating.

[0005] A method for auxiliary heating control of a heat pump system according to a first aspect embodiment of the present invention includes:

[0006] Determine that the heat pump system is in heating mode, and obtain the actual hot water temperature in the hot water tank of the heat pump system;

[0007] Based on the range of the difference between the actual hot water temperature and the preset target hot water temperature, the ambient temperature control strategy to be executed by the heat pump system is determined.

[0008] Based on the environmental temperature control strategy and the current outdoor temperature, the operating status of the compressor and auxiliary heating device in the heat pump system is controlled and adjusted, wherein the auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0009] According to an embodiment of the present invention, the step of determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature specifically includes:

[0010] If the difference between the actual hot water temperature and the preset target hot water temperature is less than the first set temperature difference, then the heat pump system is controlled to execute the first ambient temperature control strategy.

[0011] The first ambient temperature control strategy includes: controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system based on the comparison result between the ambient temperature and a preset first temperature.

[0012] According to an embodiment of the present invention, the step of controlling and adjusting the operating state of the compressor and auxiliary heating device in the heat pump system based on the ambient temperature control strategy and the current outdoor temperature specifically includes:

[0013] When the outside temperature is lower than the first preset temperature, the actual heating rate of the hot water inside the hot water tank is obtained;

[0014] Based on the actual heating rate range, the switching on and off of the compressor and auxiliary heating device in the heat pump system is controlled.

[0015] According to an embodiment of the present invention, the step of controlling the switching on and off of the compressor and auxiliary heating device in the heat pump system based on the range of the actual heating rate specifically includes:

[0016] If the actual heating rate is less than or equal to the set heating rate, then the compressor and the auxiliary heating device are simultaneously turned on.

[0017] If the actual heating rate is greater than the set heating rate, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to remain off.

[0018] According to an embodiment of the present invention, the step of controlling and adjusting the operating state of the compressor and auxiliary heating device in the heat pump system based on the ambient temperature control strategy and the current outdoor temperature specifically includes:

[0019] When the ambient temperature is greater than the first preset temperature, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to be kept off.

[0020] According to an embodiment of the present invention, the step of determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature specifically includes:

[0021] If the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the first set temperature difference and less than the second set temperature difference, then the heat pump system is controlled to execute the second ambient temperature control strategy.

[0022] The second ambient temperature control strategy includes: controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system based on the comparison result between the ambient temperature and the preset second preset temperature.

[0023] According to an embodiment of the present invention, the step of controlling and adjusting the operating state of the compressor and auxiliary heating device in the heat pump system based on the ambient temperature control strategy and the current outdoor temperature specifically includes:

[0024] When the ambient temperature is lower than the second preset temperature, the actual heating rate of the hot water inside the hot water tank is obtained;

[0025] Based on the actual heating rate range, the switching on and off of the compressor and auxiliary heating device in the heat pump system is controlled.

[0026] According to an embodiment of the present invention, the step of controlling the switching on and off of the compressor and auxiliary heating device in the heat pump system based on the range of the actual heating rate specifically includes:

[0027] If the actual heating rate is less than or equal to the set heating rate, then the compressor and the auxiliary heating device are simultaneously turned on.

[0028] If the actual heating rate is greater than the set heating rate, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to remain off.

[0029] According to an embodiment of the present invention, the step of controlling and adjusting the operating state of the compressor and auxiliary heating device in the heat pump system based on the ambient temperature control strategy and the current outdoor temperature specifically includes:

[0030] When the ambient temperature is greater than the second preset temperature, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to be kept off.

[0031] According to one embodiment of the present invention, after determining that the heat pump system is in heating mode and obtaining the actual hot water temperature in the hot water tank of the heat pump system, the method further includes:

[0032] If the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the second set temperature difference, then the compressor and the auxiliary heating device are controlled to be turned on simultaneously.

[0033] An auxiliary heating control device for a heat pump system according to a second aspect embodiment of the present invention includes:

[0034] The acquisition module is used to determine that the heat pump system is in heating mode and to acquire the actual hot water temperature in the hot water tank of the heat pump system.

[0035] The first control module is used to determine the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature.

[0036] The second control module is used to control and adjust the working status of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature. The auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0037] A heat pump system according to a third aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the auxiliary heating control method of the heat pump system as described in the first aspect of the present invention.

[0038] This invention provides an auxiliary heating control method for a heat pump system. By simultaneously monitoring the outdoor ambient temperature and the heating rate of the hot water in the tank, this method can more precisely adjust the operating status of the auxiliary heating device, thereby reducing system energy consumption while ensuring rapid heating. This is more energy-efficient than the traditional method of simply relying on an electric heater to improve heating efficiency.

[0039] Furthermore, this method allows the heat pump system to dynamically adjust its operating mode based on the actual temperature difference and ambient temperature, enabling the system to adapt to different external environmental conditions and maintain efficient operation in both cold and warm weather.

[0040] Furthermore, this method ensures that the heat pump system can quickly respond to users' hot water needs under different temperature conditions, improving user satisfaction. Users can quickly obtain hot water when needed, without waiting due to system inefficiency.

[0041] Furthermore, this method reduces energy consumption by minimizing unnecessary electric heater operation time, thereby saving users operating costs. Because this method reduces reliance on electric heaters, it helps reduce electricity consumption, thus mitigating environmental impact and aligning with current trends towards energy conservation, emission reduction, and sustainable development. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a schematic flowchart of the auxiliary heating control method for the heat pump system provided by the present invention;

[0044] Figure 2 This is a schematic diagram of the auxiliary heating control device of the heat pump system provided by the present invention;

[0045] Figure 3 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] The auxiliary heating control method, auxiliary heating control device, and heat pump system of the present invention are described below with reference to the accompanying drawings. Before providing a detailed description of the embodiments of the present invention, the overall application scenario is first described. The auxiliary heating control method, auxiliary heating control device, electronic device, and computer-readable storage medium of the heat pump system of the present invention can be applied locally to the heat pump system, to cloud platforms in the Internet field, or to other types of cloud platforms in the Internet field, or to third-party devices. These third-party devices may include various types such as mobile phones, tablets, laptops, in-vehicle computers, and other smart terminals.

[0049] The following description uses only an auxiliary heating control method applicable to heat pump systems as an example. It should be understood that the auxiliary heating control method of this invention can also be applied to cloud platforms and third-party devices. It should also be noted that the auxiliary heating control method for heat pump systems proposed in this invention is targeted, meaning that this method is applicable to heat pump systems operating in low-temperature or high-temperature environments.

[0050] like Figure 1 As shown, the auxiliary heating control method for a heat pump system according to a first aspect embodiment of the present invention includes:

[0051] Step S1: Determine that the heat pump system is in heating mode and obtain the actual hot water temperature in the hot water tank of the heat pump system.

[0052] Step S2: Determine the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature.

[0053] Step S3: Based on the ambient temperature control strategy and the current outdoor temperature, control and adjust the working status of the compressor and auxiliary heating device in the heat pump system. The auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0054] It is understood that the auxiliary heating device is a device that assists in heating the hot water tank during the operation of the heat pump system. During the heating process of the hot water in the hot water tank, the heat pump system can choose to turn on at least one of the compressor and the auxiliary heating device to supply heat to the hot water tank. The auxiliary heating control method of the present invention can realize intelligent control of the compressor and the auxiliary heating device. The auxiliary heating device can be an electric heater, heating wire, or other structures. The present invention does not impose any special restrictions on it, as long as it can provide auxiliary heating for the hot water tank.

[0055] According to an embodiment of the present invention, the auxiliary heating control method for a heat pump system operates as follows: First, the controller needs to identify the current operating mode of the heat pump system. This step is usually achieved through the system's control logic and sensor inputs to ensure that subsequent steps of the method operate in the correct heating mode.

[0056] Subsequently, the system monitors the actual hot water temperature (T_tank) in the hot water tank using a temperature sensor, ensuring accurate temperature control. Further, the system calculates the difference (Tset - T_tank) between the actual hot water temperature and the preset target hot water temperature (Tset). This difference determines the heating strategy the system must adopt. The system divides the temperature difference into different intervals based on this difference, with each interval corresponding to a different control strategy.

[0057] For example, if the temperature difference is small (Tset-T_tank < 15℃), no additional heating is needed because the target temperature is already close, so there is no need to turn on the auxiliary heating device. In this case, the heat pump compressor can meet the user's needs by running alone. If the temperature difference is large (15℃ ≤ Tset-T_tank < 40℃), then auxiliary heating devices such as electric heaters are needed to accelerate the heating process in order to meet the user's demand for hot water.

[0058] Furthermore, in step S3, if the ambient temperature is low (Tao < 7℃ or Tao < 10℃), the system will further check the heating rate of the hot water in the tank. If the heating rate is slow (less than 1℃ / 2min or 1℃ / min), it indicates that the heat pump's heating capacity is insufficient to meet the demand for rapid heating. In this case, the system will activate auxiliary heating devices such as electric heaters to assist in heating. If the heating rate is fast enough, even if the ambient temperature is low, the system can choose not to activate the electric heater to save energy and improve the system's energy efficiency.

[0059] In summary, the auxiliary heating control method of the present invention allows the system to flexibly adjust its operation under different environmental and demand conditions, thereby achieving optimal energy efficiency and user satisfaction. For example, in cold weather, the system may use the electric heater more frequently to ensure rapid heating, while in warmer weather, the system may rely more on the natural heating capacity of the heat pump.

[0060] Furthermore, this method helps reduce system energy consumption, saving energy and lowering operating costs. In addition, by dynamically adjusting the heating strategy, the system can more effectively manage its energy use, thereby meeting user needs while reducing its environmental impact.

[0061] In related technologies, air source heat pumps can produce hot water even when the external ambient temperature is extremely low. However, the heat production efficiency of a heat pump varies depending on the external ambient temperature; at lower temperatures, the heat pump's heating efficiency is relatively low. In such cases, most heat pump products will use electric heating for auxiliary heating to improve the system's heating efficiency.

[0062] However, compared to heat pumps, electric heating has lower heating capacity and energy consumption. Traditional electric heating auxiliary heating control has high energy consumption and low system energy efficiency. Therefore, traditional heat pump systems cannot balance heating efficiency and overall system energy efficiency, and cannot simultaneously achieve energy saving and meet users' heating needs, resulting in a poor user experience and higher energy consumption.

[0063] Therefore, to address the technical deficiencies in the aforementioned related technologies, this invention provides an auxiliary heating control method for a heat pump system. This method, by simultaneously monitoring the outdoor ambient temperature and the heating rate of the hot water in the hot water tank, can more precisely adjust the operating status of the electric heater, thereby reducing system energy consumption while ensuring rapid heating. This is more energy-efficient than the traditional method of simply relying on the electric heater to improve heating efficiency.

[0064] Furthermore, this method allows the heat pump system to dynamically adjust its operating mode based on the actual temperature difference and ambient temperature, enabling the system to adapt to different external environmental conditions and maintain efficient operation in both cold and warm weather.

[0065] Furthermore, this method ensures that the heat pump system can quickly respond to users' hot water needs under different temperature conditions, improving user satisfaction. Users can quickly obtain hot water when needed, without waiting due to system inefficiency.

[0066] Furthermore, this method reduces energy consumption by minimizing unnecessary electric heater operation time, thereby saving users operating costs. Because this method reduces reliance on electric heaters, it helps reduce electricity consumption, thus mitigating environmental impact and aligning with current trends towards energy conservation, emission reduction, and sustainable development.

[0067] According to some embodiments of the present invention, the step of determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature specifically includes:

[0068] If the difference between the actual hot water temperature and the preset target hot water temperature is less than the first set temperature difference, the heat pump system is controlled to execute the first ambient temperature control strategy.

[0069] The first ambient temperature control strategy includes: controlling and adjusting the working status of the compressor and auxiliary heating device in the heat pump system based on the comparison between the ambient temperature and the preset first temperature.

[0070] This embodiment further refines how to determine the ambient temperature control strategy based on the difference between the actual hot water temperature and the preset target hot water temperature. Specifically, if the difference is less than a first set temperature difference (a predefined threshold used to determine whether additional heating is needed), the system will execute the first ambient temperature control strategy.

[0071] The specific details of the first ambient temperature control strategy are as follows: First, the system compares the current ambient temperature with a preset first temperature, which serves as a reference temperature to guide the system in adjusting its operating status according to changes in the ambient temperature. Then, based on the comparison result between the ambient temperature and the preset first temperature, the system adjusts the operating status of the compressor and auxiliary heating device within the heat pump system. Specifically, adjusting the operating status may include changing the compressor's operating speed or turning the auxiliary heating device on / off, to ensure that the hot water temperature reaches or remains at the preset target temperature.

[0072] It is understandable that the purpose of the aforementioned first-loop temperature control strategy is to achieve more precise temperature control by fine-tuning the operating status of the compressor and auxiliary heating device when the hot water temperature is not significantly different from the target temperature. Simultaneously, it saves energy by avoiding unnecessary heating when the hot water temperature is already close to the target temperature. These steps contribute to improving system energy efficiency and user satisfaction.

[0073] Furthermore, the steps for controlling and adjusting the operating status of the compressor and auxiliary heating device within the heat pump system based on the ambient temperature control strategy and the current outdoor temperature include:

[0074] When the outside temperature is lower than the first preset temperature, obtain the actual heating rate of the hot water inside the hot water tank;

[0075] Based on the actual temperature rise rate range, control whether to switch the compressor and auxiliary heating device in the heat pump system on or off.

[0076] In this embodiment, when the outside temperature is lower than the first preset temperature, the external environment is very cold. At this time, the efficiency of the heat pump system in extracting heat from the environment may decrease. In this case, the system will measure the actual heating rate of the hot water inside the hot water tank and adjust the working state according to the heating rate.

[0077] It is understandable that the actual heating rate reflects the heat pump system's ability to heat water under the current operating conditions. Therefore, the system can monitor its heating efficiency by monitoring this actual heating rate and perform corresponding adjustment operations based on the different heating efficiencies.

[0078] Specifically, if the actual heating rate is lower than expected, the heating efficiency of the hot water in the tank is low, so the heating intensity needs to be increased. In this case, the system needs to turn on or increase the operation of the compressor, or start the auxiliary heating device to provide additional heat to accelerate the heating process. If the actual heating rate is within an acceptable range, the heating efficiency of the hot water in the tank can meet the user's needs. Therefore, the system can maintain its current operating state or reduce the workload of the compressor to save energy.

[0079] It is understandable that the above steps can achieve a balance between energy saving and efficiency. That is, when the outside temperature is low, the system increases the heating intensity to ensure the supply of hot water, while when the hot water temperature is close to the target temperature, the system will reduce heating to avoid energy waste.

[0080] In this way, through dynamic adjustment, the heat pump system can adapt to different environmental conditions, ensuring that it can provide a suitable hot water temperature under any circumstances, while minimizing energy consumption, thereby improving the system's energy efficiency, reducing operating costs, and being more environmentally friendly.

[0081] In some specific embodiments of the present invention, the step of controlling whether the compressor and auxiliary heating device in the heat pump system are switched on or off according to the actual heating rate range specifically includes:

[0082] If the actual heating rate is less than or equal to the set heating rate, the compressor and auxiliary heating device will be turned on simultaneously.

[0083] If the actual heating rate is greater than the set heating rate, the compressor will be turned on and the auxiliary heating device will be kept off.

[0084] For example, when the ambient temperature sensor of the outdoor unit of the heat pump system detects that the outside temperature Tao < 7℃, the system will detect the actual heating rate T_tank inside the hot water tank to ensure the heating efficiency of the heat pump system.

[0085] When the temperature rise rate of T_tank is less than 1℃ / 2min, the compressor and auxiliary heating device in the heat pump system operate simultaneously; when the temperature rise rate of T_tank is greater than 1℃ / 2min, the compressor in the heat pump system operates alone.

[0086] According to some embodiments of the present invention, the step of controlling and adjusting the operating state of the compressor and auxiliary heating device in the heat pump system based on the ambient temperature control strategy and the current outdoor temperature further includes:

[0087] When the outside temperature is higher than the first preset temperature, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to be turned off.

[0088] It's understandable that when the outside temperature is higher than the first preset temperature, it means the ambient temperature is relatively warm, and the heat pump system's efficiency in extracting heat from the environment may increase. In this case, the system will keep the compressor on to utilize the higher ambient temperature to raise the temperature of the hot water.

[0089] Furthermore, due to the higher ambient temperature, the heat pump system may already be able to extract enough heat from the environment through the compressor to meet the hot water temperature requirement. Therefore, the system will shut down the auxiliary heating unit to avoid unnecessary energy consumption. The auxiliary heating unit is typically used when the ambient temperature is lower to supplement the heat output of the heat pump system.

[0090] For example, when the ambient temperature sensor of the outdoor unit of the heat pump system detects an outside temperature Tao > 7°C, the heat pump heating efficiency is high, and the auxiliary heating device will stop operating at this time.

[0091] According to other embodiments of the present invention, the step of determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature specifically includes:

[0092] If the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the first set temperature difference and less than the second set temperature difference, the heat pump system is controlled to execute the second ambient temperature control strategy.

[0093] The second ambient temperature control strategy includes: controlling and adjusting the working status of the compressor and auxiliary heating device in the heat pump system based on the comparison between the ambient temperature and the preset second temperature.

[0094] In this embodiment, the system determines the ambient temperature control strategy to be implemented based on the difference between the actual hot water temperature and the preset target hot water temperature. Specifically, when the difference is within a specific range between the first set temperature difference and the second set temperature difference, the system will execute a second ambient temperature control strategy. The working principle and process of this strategy are as follows:

[0095] The system first determines the difference between the actual hot water temperature and the preset target hot water temperature. If this difference is greater than or equal to the first set temperature difference (a smaller threshold) and less than the second set temperature difference (a larger threshold), then moderate heating measures are required. In this case, the system selects to implement a second loop temperature control strategy, which is a strategy between energy saving and full-power heating.

[0096] Under the second ambient temperature control strategy, the system compares the current ambient temperature with a preset second temperature. This second preset temperature serves as a reference temperature for the system to determine whether additional heating is needed.

[0097] Specifically, if the outside temperature is lower than the second preset temperature, the hot water tank needs more heat to reach the target hot water temperature. Therefore, the system will adjust the working status of the compressor and / or auxiliary heating device, such as increasing its working frequency or power, or starting the auxiliary heating device to provide additional heat. If the outside temperature is higher than the second preset temperature, the ambient temperature is already high enough, so the compressor's workload can be reduced, or the auxiliary heating device can be kept off to utilize ambient heat to achieve energy saving.

[0098] Furthermore, the steps for controlling and adjusting the operating status of the compressor and auxiliary heating device within the heat pump system based on the ambient temperature control strategy and the current outdoor temperature include:

[0099] When the outside temperature is lower than the second preset temperature, obtain the actual heating rate of the hot water inside the hot water tank;

[0100] Based on the actual temperature rise rate range, control whether to switch the compressor and auxiliary heating device in the heat pump system on or off.

[0101] In this embodiment, if the ambient temperature is lower than the second preset temperature, it means that the ambient temperature is low and may not be sufficient to support the heat pump system in efficiently extracting heat from the environment. In this case, the system measures the actual heating rate of the hot water inside the hot water tank and compares the actual heating rate with a preset threshold to divide the heating rate into different intervals. These intervals represent different heating efficiencies and heating effects.

[0102] If the actual heating rate is lower than a preset threshold, it means that the heat pump system alone is insufficient to quickly reach the target hot water temperature. In this case, the system will activate the auxiliary heating device or increase the workload of the compressor to provide additional heat and accelerate the heating process.

[0103] If the actual heating rate exceeds a preset threshold, it indicates that the heat pump system is efficient enough on its own to maintain the rise in hot water temperature. In this case, the system will shut down the auxiliary heating device or reduce the compressor's workload to save energy.

[0104] In some specific embodiments of the present invention, the step of controlling whether the compressor and auxiliary heating device in the heat pump system are switched on or off according to the actual heating rate range specifically includes:

[0105] If the actual heating rate is less than or equal to the set heating rate, the compressor and auxiliary heating device will be turned on simultaneously.

[0106] If the actual heating rate is greater than the set heating rate, the compressor will be turned on and the auxiliary heating device will be kept off.

[0107] For example, when Tao < 10℃, the system will detect the heating rate inside the water tank to ensure the heating efficiency of the heat pump system.

[0108] When the temperature rise rate of T_tank is less than 1℃ / 2min, the compressor and auxiliary heating device in the heat pump system operate simultaneously; when the temperature rise rate of T_tank is greater than 1℃ / 2min, the compressor in the heat pump system operates alone.

[0109] In other specific embodiments of the present invention, the step of controlling and adjusting the operating state of the compressor and auxiliary heating device in the heat pump system according to the environmental temperature control strategy and the current outdoor temperature specifically includes:

[0110] When the outside temperature is higher than the second preset temperature, the compressor is controlled to be turned on and the auxiliary heating device is controlled to be turned off.

[0111] For example, when the ambient temperature sensor of the outdoor unit of the heat pump system detects an outside temperature Tao > 10°C, the heat pump heating efficiency is high, and the auxiliary heating device will stop operating at this time.

[0112] According to further embodiments of the present invention, after determining that the heat pump system is in heating mode and obtaining the actual hot water temperature in the hot water tank of the heat pump system, the auxiliary heating control method further includes:

[0113] If the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the second set temperature difference, the compressor and auxiliary heating device will be turned on simultaneously.

[0114] In this embodiment, if the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the second set temperature difference (a large threshold used to determine whether full heating is required), the hot water tank needs more heat to quickly reach the target hot water temperature.

[0115] In this situation, the system will control the compressor and auxiliary heating device to be turned on simultaneously. At this time, the system will use both the heat pump to extract heat from the environment and the additional heat provided by the auxiliary heating device to accelerate the rise in hot water temperature.

[0116] It is understandable that turning on the compressor helps extract heat from the environment, while turning on auxiliary heating devices (such as electric heaters or gas heaters) provides direct heat input. The two work together to quickly increase the temperature of the hot water.

[0117] In this way, through the above control strategy, the heat pump system can respond quickly and provide sufficient heat when there is a large difference between the hot water temperature and the target temperature, so as to ensure that the hot water temperature can reach or exceed the preset target temperature in a timely manner, which helps to improve the reliability of the heat pump system and user satisfaction under extreme weather conditions.

[0118] The auxiliary heating control device for the heat pump system provided by the present invention is described below. The auxiliary heating control device for the heat pump system described below can be referred to in correspondence with the auxiliary heating control method for the heat pump system described above.

[0119] like Figure 2 As shown, the auxiliary heating control device for a heat pump system according to a second aspect embodiment of the present invention includes:

[0120] The acquisition module 110 is used to determine that the heat pump system is in heating mode and to acquire the actual hot water temperature in the hot water tank of the heat pump system.

[0121] The first control module 120 is used to determine the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature.

[0122] The second control module 130 is used to control and adjust the working status of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature. The auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0123] A heat pump system according to a third aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the auxiliary heating control method of the heat pump system according to the first aspect of the present invention.

[0124] Figure 3 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 3As shown, the electronic device may include a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call logic instructions in the memory 830 to execute the auxiliary heating control method of the heat pump system, including: determining that the heat pump system is in heating mode and obtaining the actual hot water temperature in the hot water tank of the heat pump system; determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature; and controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature, wherein the auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0125] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0126] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute an auxiliary heating control method for a heat pump system, including: determining that the heat pump system is in heating mode and obtaining the actual hot water temperature in the hot water tank of the heat pump system; determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature; and controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature, wherein the auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0127] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements an auxiliary heating control method for a heat pump system, comprising: determining that the heat pump system is in heating mode; acquiring the actual hot water temperature in the hot water tank within the heat pump system; determining an ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and a preset target hot water temperature; and controlling and adjusting the operating state of the compressor and auxiliary heating device within the heat pump system based on the ambient temperature control strategy and the current outdoor temperature, wherein the auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it.

[0128] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0129] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling auxiliary heating in a heat pump system, characterized in that, include: Determine that the heat pump system is in heating mode, and obtain the actual hot water temperature in the hot water tank of the heat pump system; Based on the range of the difference between the actual hot water temperature and the preset target hot water temperature, the ambient temperature control strategy to be executed by the heat pump system is determined. Based on the ambient temperature control strategy and the current outdoor temperature, the operating status of the compressor and auxiliary heating device in the heat pump system is controlled and adjusted, wherein the auxiliary heating device is installed in the hot water tank and provides auxiliary heating for it. The step of determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature specifically includes: if the difference between the actual hot water temperature and the preset target hot water temperature is less than a first set temperature difference, then controlling the heat pump system to execute a first ambient temperature control strategy; wherein, the first ambient temperature control strategy includes: controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system based on the comparison result between the ambient temperature and the preset first preset temperature; The step of controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature specifically includes: when the outdoor temperature is lower than the first preset temperature, obtaining the actual heating rate of the hot water inside the hot water tank; and controlling and adjusting the switching on and off of the compressor and auxiliary heating device in the heat pump system according to the range of the actual heating rate.

2. The auxiliary heating control method for a heat pump system according to claim 1, characterized in that, The step of controlling the switching on and off of the compressor and auxiliary heating device in the heat pump system based on the actual heating rate range specifically includes: If the actual heating rate is less than or equal to the set heating rate, then the compressor and the auxiliary heating device are simultaneously turned on. If the actual heating rate is greater than the set heating rate, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to remain off.

3. The auxiliary heating control method for a heat pump system according to claim 1, characterized in that, The step of controlling and adjusting the operating status of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature specifically includes: When the ambient temperature is greater than the first preset temperature, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to be kept off.

4. The auxiliary heating control method for a heat pump system according to claim 1, characterized in that, The step of determining the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature specifically includes: If the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the first set temperature difference and less than the second set temperature difference, then the heat pump system is controlled to execute the second ambient temperature control strategy. The second ambient temperature control strategy includes: controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system based on the comparison result between the ambient temperature and the preset second preset temperature; The step of controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature specifically includes: when the outdoor temperature is lower than the second preset temperature, obtaining the actual heating rate of the hot water inside the hot water tank; and controlling and adjusting the switching on and off of the compressor and auxiliary heating device in the heat pump system according to the range of the actual heating rate.

5. The auxiliary heating control method for a heat pump system according to claim 4, characterized in that, The step of controlling the switching on and off of the compressor and auxiliary heating device in the heat pump system based on the actual heating rate range specifically includes: If the actual heating rate is less than or equal to the set heating rate, then the compressor and the auxiliary heating device are simultaneously turned on. If the actual heating rate is greater than the set heating rate, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to remain off.

6. The auxiliary heating control method for a heat pump system according to claim 4, characterized in that, The step of controlling and adjusting the operating status of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature specifically includes: When the ambient temperature is greater than the second preset temperature, the compressor is controlled to be turned on, and the auxiliary heating device is controlled to be kept off.

7. The auxiliary heating control method for a heat pump system according to any one of claims 1 to 6, characterized in that, After determining that the heat pump system is in heating mode and obtaining the actual hot water temperature in the hot water tank of the heat pump system, the method further includes: If the difference between the actual hot water temperature and the preset target hot water temperature is greater than or equal to the second set temperature difference, then the compressor and the auxiliary heating device are controlled to be turned on simultaneously.

8. An auxiliary heating control device for a heat pump system, characterized in that, include: The acquisition module is used to determine that the heat pump system is in heating mode and to acquire the actual hot water temperature in the hot water tank of the heat pump system. The first control module is used to determine the ambient temperature control strategy to be executed by the heat pump system based on the range of the difference between the actual hot water temperature and the preset target hot water temperature. Specifically, the first control module is used to control the heat pump system to execute a first ambient temperature control strategy if the difference between the actual hot water temperature and the preset target hot water temperature is less than a first set temperature difference. The first ambient temperature control strategy includes controlling and adjusting the working state of the compressor and auxiliary heating device in the heat pump system based on the comparison result between the current outdoor temperature and the preset first temperature. The second control module is used to control and adjust the working status of the compressor and auxiliary heating device in the heat pump system according to the ambient temperature control strategy and the current outdoor temperature. The auxiliary heating device is installed in the hot water tank and provides auxiliary heating. Specifically, the second control module is used to: obtain the actual heating rate of the hot water in the hot water tank when the outdoor temperature is lower than the first preset temperature, and control and adjust the switching on and off of the compressor and auxiliary heating device in the heat pump system according to the range of the actual heating rate.

9. A heat pump system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the auxiliary heating control method for the heat pump system as described in any one of claims 1 to 7.

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