Heat pump device based on power consumption and control method and linkage system thereof

Abstract

The invention provides a heat pump device based on power consumption and a control method and linkage system thereof, and the control method comprises the steps that an indoor set temperature, a temperature correction value and a temperature upper limit value of a user temperature comfort interval are obtained, and the temperature correction value is determined by an outdoor environment reference temperature; in the space heating operation mode and under the condition that no hot water heating requirement exists, the storage electric quantity of the energy storage unit and the on-grid power supplied to the power grid by the power generation and energy storage device are obtained; and when the stored electric quantity is larger than or equal to the first preset electric quantity and the on-grid power is larger than or equal to the first preset power, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value. The invention provides a control mode in a space heating operation mode and under the condition that no hot water heating requirement exists, and the space heating operation state can be adjusted to consume electric power; the indoor set temperature can be updated based on the temperature upper limit value and the temperature correction value determined by the outdoor environment reference temperature, the flexibility is high, the power consumption is improved, and the user comfort is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of heat pump control technology, and in particular to a heat pump device based on power consumption, a control method and a linkage system thereof. Background Art

[0002] In the related art, for the existing ATW (Air to Water) heat pump device, the following operating modes are usually set: first, a hot water making priority operating mode, which switches to hot water making operation when there is a demand for hot water making; second, a hot water making non-priority operating mode, which switches to space heating operation when there is a demand for space heating. If there is a demand for hot water at this time, the hot water demand is met by electric heating of the water tank.

[0003] However, existing ATW heat pump devices based on electricity consumption, such as ATW heat pump devices based on photovoltaic consumption, usually increase the set water temperature of the domestic hot water tank to the upper limit set by the user, such as 70°C, when the photovoltaic surplus power reaches a certain threshold, and turn on the electric heating of the water tank at the same time, so as to use free electricity to store hot water. Therefore, the existing ATW heat pump device only adjusts the operating state of hot water production, and does not involve space heating. However, the operation of hot water production is intermittent and the power consumption is small, while the operation of space heating is continuous and the power consumption is large. Therefore, it is necessary to increase the power consumption by adjusting the operating state of space heating while ensuring the comfort of users. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a heat pump device based on power consumption and its control method and linkage system, which aims to adjust the space heating operation state to consume power, and can improve the power consumption and ensure the comfort of users.

[0005] In a first aspect, an embodiment of the present application provides a control method for a heat pump device based on power consumption, wherein the heat pump device is used to be connected to a power generation and energy storage device, wherein the power generation and energy storage device comprises a power generation component and an energy storage unit, wherein the power generation component is respectively connected to the energy storage unit, the heat pump device and a power grid; the control method comprises:

[0006] Obtaining the indoor set temperature, the temperature correction value and the temperature upper limit value of the user's temperature comfort zone, wherein the temperature correction value is determined by the outdoor environment reference temperature;

[0007] In a space heating operation mode and when there is no demand for hot water, obtaining the stored power of the energy storage unit and the grid-connected power supplied by the power generation and energy storage device to the grid;

[0008] When the stored power is greater than or equal to the first preset power and the online power is greater than or equal to the first preset power, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value.

[0009] According to some embodiments of the present application, after acquiring the stored power of the energy storage unit and the grid-connected power supplied to the power grid by the power generation and energy storage device, the control method further includes:

[0010] When the stored power is less than a second preset power, the indoor set temperature is restored to an original set value, wherein the second preset power is less than or equal to the first preset power.

[0011] According to some embodiments of the present application, after acquiring the stored power of the energy storage unit and the grid-connected power supplied to the power grid by the power generation and energy storage device, the control method further includes:

[0012] When the stored power is less than a first preset power or the online power is less than a first preset power, obtaining the power taken by the load from the power grid;

[0013] When the power taken is greater than or equal to the second preset power, the indoor set temperature is restored to the original set value.

[0014] According to some embodiments of the present application, the control method further includes one of the following:

[0015] When switching to the hot water operation mode, restoring the indoor set temperature to the original set value;

[0016] In the space heating operation mode and when there is a demand for hot water, the indoor set temperature is restored to the original set value.

[0017] According to some embodiments of the present application, restoring the indoor set temperature to the original set value includes:

[0018] When the indoor set temperature has been updated to the strategic set temperature, the indoor set temperature is restored to the original set value, wherein the strategic set temperature is determined by the temperature correction value and the temperature upper limit value.

[0019] According to some embodiments of the present application, before updating the indoor set temperature according to the temperature correction value and the temperature upper limit value, the control method further includes:

[0020] Get the operating status of the compressor;

[0021] When it is determined that the compressor is in the frequency reduction operation stage, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value.

[0022] According to some embodiments of the present application, the temperature correction value is determined by at least one of the following steps:

[0023] Determine a first indoor temperature correction value generated by building thermal inertia based on the outdoor environment reference temperature;

[0024] The outdoor environment temperature is acquired, and a second indoor temperature correction value generated due to a change in the outdoor environment temperature is determined based on the outdoor environment temperature and the outdoor environment reference temperature.

[0025] According to some embodiments of the present application, determining a second indoor temperature correction value generated by a change in the outdoor ambient temperature based on the outdoor ambient temperature and the outdoor ambient reference temperature includes:

[0026] Calculating the temperature difference between the outdoor environment temperature and the outdoor environment reference temperature;

[0027] A second indoor temperature correction value generated due to a change in the outdoor ambient temperature is determined according to the temperature difference.

[0028] According to some embodiments of the present application, determining the second indoor temperature correction value generated by the change of the outdoor ambient temperature according to the temperature difference includes one of the following:

[0029] When the temperature difference is a negative value, determining that the second indoor temperature correction value generated by the change in the outdoor ambient temperature is a negative value;

[0030] When the temperature difference is a positive value, determining that the second indoor temperature correction value generated by the change in the outdoor ambient temperature is a positive value;

[0031] When the temperature difference is zero, it is determined that the second indoor temperature correction value generated by the change in the outdoor ambient temperature is zero.

[0032] According to some embodiments of the present application, updating the indoor set temperature according to the temperature correction value and the temperature upper limit value includes:

[0033] Determine a strategic set temperature according to the temperature correction value and the temperature upper limit value;

[0034] When the indoor set temperature is lower than the strategic set temperature, the indoor set temperature is updated to the strategic set temperature.

[0035] According to some embodiments of the present application, updating the indoor set temperature according to the temperature correction value and the temperature upper limit value includes:

[0036] Determine a strategic set temperature according to the temperature correction value and the temperature upper limit value;

[0037] When the indoor set temperature is greater than or equal to the strategic set temperature, the indoor set temperature is kept unchanged.

[0038] In a second aspect, an embodiment of the present application provides a heat pump device based on power consumption, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the control method of the heat pump device based on power consumption as described in the first aspect above when running the computer program.

[0039] In a third aspect, an embodiment of the present application provides a linkage system based on energy storage and a heat pump, comprising a power generation and energy storage device and the heat pump device of the second aspect above, wherein the power generation and energy storage device is connected to the heat pump device.

[0040] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the control method of a heat pump device based on power consumption as described in the first aspect above.

[0041] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: first, the embodiment of the present application will obtain the indoor set temperature, the temperature correction value and the temperature upper limit value of the user's temperature comfort zone, wherein the temperature correction value is determined by the outdoor environmental reference temperature; then, in the space heating operation mode and when there is no demand for hot water, the embodiment of the present application will obtain the stored power of the energy storage unit and the online power supplied to the power grid by the power generation and storage device; then, when the stored power is greater than or equal to the first preset power and the online power is greater than or equal to the first preset power, the embodiment of the present application will update the indoor set temperature according to the temperature correction value and the temperature upper limit value. Since the embodiment of the present application provides a control method in the space heating operation mode and when there is no demand for hot water, the space heating operation state can be adjusted to consume electricity; in addition, the embodiment of the present application can also update the indoor set temperature based on the temperature upper limit value and the temperature correction value determined by the outdoor environmental reference temperature, adding the influence of environmental factors, and has strong flexibility, thereby further improving the power consumption and ensuring the comfort of users.

[0042] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0044] Figure 1 It is a structural schematic diagram of a heat pump device based on power consumption provided by an embodiment of the present application;

[0045] Figure 2 It is a structural schematic diagram of a linkage system based on energy storage and heat pump provided by an embodiment of the present application;

[0046] Figure 3 It is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by an embodiment of the present application;

[0047] Figure 4 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0048] Figure 5 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0049] Figure 6 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0050] Figure 7 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0051] Figure 8 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0052] Fig. 9 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0053] Fig.10 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0054] Fig.11 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0055] Fig.12 is a flowchart of the steps of a control method of a heat pump device based on power consumption provided by another embodiment of the present application;

[0056] Fig.13 This is a flowchart of the overall steps of a control method for a heat pump device based on power consumption provided by an embodiment of the present application;

[0057] Fig.14It is a schematic diagram of a controller for executing a control method for a heat pump device based on power consumption provided in one embodiment of the present application. DETAILED DESCRIPTION

[0058] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0059] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0061] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0062] In some cases, for existing ATW heat pump devices, the following operating modes are usually set: first, a hot water making priority operating mode, in which the device switches to hot water making operation when there is a demand for hot water making; second, a hot water making non-priority operating mode, in which the device switches to space heating operation when there is a demand for space heating. If there is a demand for hot water at this time, the hot water demand is met by electric heating of the water tank.

[0063] However, existing ATW heat pump devices based on electricity consumption, such as ATW heat pump devices based on photovoltaic consumption, usually increase the set water temperature of the domestic hot water tank to the upper limit set by the user, such as 70°C, when the photovoltaic surplus power reaches a certain threshold, and turn on the electric heating of the water tank at the same time, so as to use free electricity to store hot water. Therefore, the existing ATW heat pump device only adjusts the operating state of hot water production, and does not involve space heating. However, the operation of hot water production is intermittent and the power consumption is small, while the operation of space heating is continuous and the power consumption is large. Therefore, it is necessary to increase the power consumption by adjusting the operating state of space heating while ensuring the comfort of users.

[0064] Based on the above situation, the embodiment of the present application proposes a heat pump device based on power consumption, a control method and a linkage system thereof, which aims to adjust the space heating operation state to consume electricity, and can improve the power consumption and ensure the comfort of users.

[0065] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0066] like Figure 1 to Figure 2 As shown, Figure 1 It is a structural schematic diagram of a heat pump device based on power consumption provided by an embodiment of the present application; Figure 2 It is a structural diagram of a linkage system based on energy storage and heat pump provided in one embodiment of the present application.

[0067] In one embodiment, the linkage system of the embodiment of the present application includes but is not limited to a power generation and energy storage device and a heat pump device 300, wherein the power generation and energy storage device is electrically connected to the heat pump device 300, and in addition, the power generation and energy storage device and the heat pump device 300 can also be connected to a power grid 400.

[0068] Specifically, the embodiment of the present application can generate electricity and store electric energy through the power generation and energy storage device. At the same time, the embodiment of the present application can also supply the electric energy generated by the power generation and energy storage device to the heat pump device 300 or the power grid 400. In addition, in addition to obtaining electric energy from the power generation and energy storage device, the heat pump device 300 can also obtain electric energy directly from the power grid 400.

[0069] In one embodiment, the power generation and energy storage device in the embodiment of the present application includes but is not limited to a power generation component 100 and an energy storage unit 200, and the power generation component 100 is respectively connected to the energy storage unit 200, the heat pump device 300 and the power grid 400; wherein the function of the power generation component 100 is to generate electricity, and the function of the energy storage unit 200 is to store electrical energy.

[0070] It is understandable that the above-mentioned power generation component 100 can be a photovoltaic power generation component, a hydroelectric power generation component, or other forms of power generation components. The embodiment of the present application does not specifically limit the structural form of the power generation component 100.

[0071] In addition, it can be understood that the above-mentioned energy storage unit 200 can be a battery or other devices, and the embodiment of the present application does not specifically limit the structural form of the energy storage unit 200.

[0072] In one embodiment, the power generation and energy storage device in the embodiment of the present application includes but is not limited to an inverter 500, wherein one end of the inverter 500 is connected to the power generation component 100 and the energy storage unit 200, and the other end is connected to the heat pump device 300 and the power grid 400.

[0073] Specifically, since the power generation component 100 usually generates direct current, and since the heat pump device 300 and the power grid 400 both use alternating current, the embodiment of the present application requires adding an inverter 500 between the power generation component 100 and the heat pump device 300 and the power grid 400, so as to convert the direct current generated by the power generation component 100 into alternating current and supply it to the heat pump device 300 and the power grid 400.

[0074] In one embodiment, the linkage system of the embodiment of the present application also includes but is not limited to a distribution cabinet 700, wherein one end of the distribution cabinet 700 is connected to the power generation component 100 and the power grid 400, and the other end is connected to the heat pump device 300.

[0075] Specifically, the power distribution cabinet 700 can play the role of voltage and current regulation and electric energy distribution, so that the electric energy from the power generation component 100 or the power grid 400 can be better distributed to the heat pump device 300.

[0076] In one embodiment, the linkage system of the embodiment of the present application also includes but is not limited to a power sensor 600, wherein one end of the power sensor 600 is connected to the power generation component 100 and the heat pump device 300, and the other end is connected to the power grid 400.

[0077] Specifically, the embodiment of the present application can detect the grid power supplied by the power generation and energy storage device to the grid 400 through the power sensor 600, and can also detect the power drawn by the load such as the heat pump device 300 from the grid 400 through the power sensor 600.

[0078] In one embodiment, the heat pump device 300 in the embodiment of the present application includes but is not limited to a heat pump external unit 310, a water heating device and a space heating device, wherein the heat pump external unit 310 is connected to the water heating device and the space heating device respectively.

[0079] Specifically, the embodiment of the present application can start the heat pump outdoor unit 310 to allow the refrigerant to flow through the water heating device, thereby performing hot water treatment; it can also start the heat pump outdoor unit 310 to allow the refrigerant to flow through the space heating device, thereby performing heating treatment on the indoor space; it can also start the heat pump outdoor unit 310 to allow the refrigerant to flow through the water heating device and the space heating device at the same time, thereby performing hot water treatment and heating treatment on the indoor space.

[0080] It is understandable that the above-mentioned water-heating device may be a water tank 320. In addition, in the embodiment of the present application, an electric heater 321 may be arranged in the water tank 320, and the electric heating of the water tank 320 is realized by supplying power to the electric heater 321.

[0081] It can be understood that the above-mentioned space heating device can be a floor heater 330 or other heating equipment, and the embodiment of the present application does not specifically limit the structure of the space heating device.

[0082] In one embodiment, the heat pump device 300 in the embodiment of the present application includes but is not limited to a wire controller 340 , an electric three-way valve 350 , a balancing water tank 360 and an expansion tank 370 .

[0083] Based on the hardware structures of the heat pump device and the linkage system of the above-mentioned embodiments, a plurality of embodiments of the control method of the heat pump device based on power consumption of the present application are respectively proposed below.

[0084] like Figure 3 As shown, Figure 3 1 is a flow chart of a control method for a heat pump device based on power consumption provided by an embodiment of the present application. The control method for a heat pump device based on power consumption may include but is not limited to step S310, step S320 and step S330.

[0085] Step S310, obtaining the indoor set temperature, the temperature correction value and the temperature upper limit value of the user's temperature comfort zone, wherein the temperature correction value is determined by the outdoor environment reference temperature;

[0086] Step S320: in the space heating operation mode and when there is no demand for hot water, obtaining the stored power of the energy storage unit and the grid-connected power supplied by the power generation and energy storage device to the grid;

[0087] Step S330: When the stored power is greater than or equal to the first preset power and the online power is greater than or equal to the first preset power, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value.

[0088] In one embodiment, first, the embodiment of the present application can obtain the outdoor environment reference temperature and the indoor set temperature set by the user, as well as the user temperature comfort range that can make the user feel comfortable, and determine the temperature correction value based on the outdoor environment reference temperature; then, if the heat pump device is currently in the space heating operation mode and there is no demand for hot water, at this time, the embodiment of the present application can detect the current storage power of the energy storage unit, and detect the online power supplied to the power grid by the power generation energy storage device through the power sensor; then, if the storage power is greater than or equal to the first preset power and the online power is greater than or equal to the first preset power, it indicates that the energy storage unit has stored enough power and the power supplied to the power grid is also high, that is, it indicates that the power generation component can supply power to the energy storage unit and the power grid. There is also surplus power. At this time, the embodiment of the present application can use the surplus power as much as possible, for example, the indoor set temperature can be appropriately adjusted, and the adjustment process is as follows: The embodiment of the present application will determine the strategy set temperature according to the temperature correction value and the temperature upper limit value, and then update the indoor set temperature to the strategy set temperature.

[0089] Since the embodiment of the present application provides a control method in the space heating operation mode and without the demand for hot water production, it is possible to adjust the space heating operation state to consume electricity; in addition, the embodiment of the present application can also update the indoor set temperature based on the temperature upper limit value and the temperature correction value determined by the outdoor environmental reference temperature, taking into account the influence of environmental factors, and has strong flexibility, thereby being able to further improve the power consumption and ensure the comfort of users.

[0090] It should be noted that the above-mentioned space heating operation mode may refer to heating the indoor air by a space heating device.

[0091] In addition, it should be noted that the above-mentioned demand for hot water production may be the demand for heating the water tank by means of refrigerant flow heat transfer through the heat pump external unit, or it may refer to the demand for heating the water tank through an electric heater. The embodiments of the present application do not make specific limitations on this.

[0092] It can be understood that the above-mentioned first preset power can be pre-set, and the embodiment of the present application does not specifically limit the value of the first preset power.

[0093] In addition, it can be understood that the above-mentioned first preset power can be pre-set, and the embodiment of the present application does not specifically limit the value of the first preset power.

[0094] In addition, if Figure 4 As shown, Figure 4It is a flow chart of a control method of a heat pump device based on power consumption provided by another embodiment of the present application. After executing the above step S320 of obtaining the stored power of the energy storage unit and the grid power supplied to the power grid by the power generation and storage device, the control method of the embodiment of the present application may also include but is not limited to step S410 and step S420.

[0095] Step S410: when the stored power is less than the second preset power;

[0096] Step S420: restore the indoor set temperature to the original set value, wherein the second preset power is less than or equal to the first preset power.

[0097] In one embodiment, if the stored power is less than the second preset power, it indicates that the energy storage unit currently stores less power, and the power generation component can continue to store electrical energy into the energy storage unit. At this time, the power generation component does not have surplus power to enhance space heating. Therefore, the embodiment of the present application can maintain the indoor set temperature at the original set value.

[0098] It can be understood that, regarding the above-mentioned second preset power, its value is less than or equal to the above-mentioned first preset power. The second preset power can be pre-set, and the embodiment of the present application does not specifically limit the value of the second preset power.

[0099] In addition, if Figure 5 As shown, Figure 5 This is a flow chart of a control method for a heat pump device based on power consumption provided by another embodiment of the present application. After executing the above step S320 of obtaining the stored power of the energy storage unit and the grid power supplied to the power grid by the power generation and storage device, the control method of the embodiment of the present application may also include but is not limited to step S510 and step S520.

[0100] Step S510: when the stored power is less than the first preset power or the online power is less than the first preset power, the power taken by the load from the power grid is obtained;

[0101] Step S520: When the power taken is greater than or equal to the second preset power, the indoor set temperature is restored to the original set value.

[0102] In one embodiment, the embodiment of the present application can obtain the power drawn by a load such as a heat pump device from the power grid, and determine how much power the load draws from the power grid. If the power drawn is greater than or equal to a second preset power, the load power consumption exceeds the power supply of the power generation and energy storage device, and the load needs to draw a large amount of electricity from the power grid, which indicates that the power generated by the power generation component is insufficient. In this case, the indoor set temperature does not need to be adjusted, and the indoor set temperature can be kept at the original set value.

[0103] It can be understood that the above-mentioned second preset power can be pre-set, and the embodiment of the present application does not specifically limit the value of the second preset power.

[0104] In addition, if Figure 6 As shown, Figure 6 1 is a flow chart of a control method for a heat pump device based on power consumption provided by another embodiment of the present application. The control method of the embodiment of the present application may also include but is not limited to step S610 and step S620.

[0105] Step S610, determine to switch to the hot water operation mode;

[0106] Step S620: restore the indoor set temperature to the original set value.

[0107] In one embodiment, if the heat pump device is currently in a hot water production operation mode, then in order to ensure the hot water production demand and allow more electricity to be supplied to the hot water production device, the embodiment of the present application may not adjust the indoor set temperature corresponding to the space heating, that is, maintain the indoor set temperature at the original set value.

[0108] In addition, if Figure 7 As shown, Figure 7 1 is a flow chart of a control method for a heat pump device based on power consumption provided by another embodiment of the present application. The control method of the embodiment of the present application may also include but is not limited to step S710 and step S720.

[0109] Step S710, determining that the current operation mode is space heating and there is a demand for hot water;

[0110] Step S720: restore the indoor set temperature to the original set value.

[0111] In one embodiment, if the heat pump device is currently in the space heating operation mode and there is a demand for hot water at the same time, then, in order to ensure both the space heating demand and the hot water demand, the embodiment of the present application may not adjust the indoor set temperature corresponding to the space heating, that is, keep the indoor set temperature at the original set value, and on the basis of meeting the space heating demand, supply other electricity to the hot water device, thereby gradually meeting the hot water demand.

[0112] In addition, if Figure 8 As shown, Figure 8 This is a flow chart of a control method for a heat pump device based on power consumption provided by another embodiment of the present application. Regarding restoring the indoor set temperature to the original set value in the above steps S420, S520, S620 and S720, it may include but is not limited to steps S810 and S820.

[0113] Step S810: When the indoor set temperature has been updated to the strategic set temperature;

[0114] Step S820: restore the indoor set temperature to the original set value, wherein the strategic set temperature is determined by the temperature correction value and the temperature upper limit value.

[0115] In one embodiment, for the above steps S420, S520, S620 and S720, if the indoor set temperature has been adjusted to the strategic set temperature, then the indoor set temperature is restored to the original set value as needed.

[0116] In addition, if Fig. 9 As shown, Fig. 9 Flow chart of a control method of a heat pump device based on power consumption provided by another embodiment of the present application. Before updating the indoor set temperature according to the temperature correction value and the temperature upper limit value in the above step S330, the control method of the embodiment of the present application may also include but is not limited to step S910 and step S920.

[0117] Step S910, obtaining the operating status of the compressor;

[0118] Step S920: When it is determined that the compressor is in the frequency reduction operation stage, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value.

[0119] In one embodiment, first, the embodiment of the present application can obtain the outdoor environment reference temperature and the indoor set temperature set by the user, as well as the user temperature comfort range that can make the user feel comfortable, and determine the temperature correction value based on the outdoor environment reference temperature; then, if the heat pump device is currently in the space heating operation mode and there is no demand for hot water, at this time, the embodiment of the present application can detect the current storage power of the energy storage unit, and detect the online power supplied to the power grid by the power generation and energy storage device through the power sensor; then, if the storage power is greater than or equal to the first preset power and the online power is greater than or equal to the first preset power, it indicates that the energy storage unit has stored enough power and the power supplied to the power grid is also high, which means that the power generation component can supply power to the energy storage unit and the power grid and there is still surplus power.

[0120] At this time, the embodiment of the present application also needs to determine whether the compressor is in the frequency increase operation stage or the frequency decrease operation stage. If the compressor is in the frequency increase operation stage, the power required by the compressor will gradually increase. Then, in order to ensure the subsequent power demand of the compressor, some power needs to be reserved, that is, the above-mentioned surplus power is reserved. At this time, the indoor set temperature will not be adjusted up to consume the above-mentioned surplus power.

[0121] If the compressor is in the frequency reduction operation stage, the subsequent power required by the compressor will gradually decrease, and the surplus power will gradually increase. At this time, the embodiment of the present application can use the surplus power as much as possible. For example, the indoor set temperature can be appropriately adjusted. The adjustment process is as follows: The embodiment of the present application will determine the strategy set temperature based on the temperature correction value and the temperature upper limit value, and then update the indoor set temperature to the strategy set temperature.

[0122] It should be noted that the temperature correction value determined based on the outdoor ambient temperature includes but is not limited to at least one of the following situations:

[0123] In the first case, a first indoor temperature correction value generated by the thermal inertia of the building is determined based on the outdoor environment reference temperature.

[0124] In the second case, the outdoor ambient temperature is obtained, and a second indoor temperature correction value generated by a change in the outdoor ambient temperature is determined based on the outdoor ambient temperature and the outdoor ambient reference temperature.

[0125] In addition, if Fig.10 As shown, Fig.10 This is a flow chart of a control method of a heat pump device based on power consumption provided by another embodiment of the present application. Regarding the method for obtaining the second indoor temperature correction value in the second case above, it may include but is not limited to step S1010, step S1020 and step S1030.

[0126] Step S1010, obtaining the outdoor ambient temperature;

[0127] Step S1020, calculating the temperature difference between the outdoor environment temperature and the outdoor environment reference temperature;

[0128] Step S1030: determining a second indoor temperature correction value generated by a change in the outdoor ambient temperature according to the temperature difference.

[0129] In one embodiment, the difference in the change of the outdoor ambient temperature will also generate a second indoor temperature correction value. The second indoor temperature correction value is obtained as follows: first, the embodiment of the present application can predetermine the outdoor ambient reference temperature through experiments or other methods; then, the temperature difference between the outdoor ambient temperature and the outdoor ambient reference temperature is calculated to determine the change of the outdoor ambient temperature, such as an increase of 3°C or a decrease of 3°C; finally, the second indoor temperature correction value generated by the change of the outdoor ambient temperature is determined based on the temperature difference.

[0130] It should be noted that the relationship between the above-mentioned temperature difference and the second indoor temperature correction value includes but is not limited to the following three relationships:

[0131] The first relationship: when the temperature difference between the outdoor environment temperature and the outdoor environment reference temperature is a negative value, it can be determined that the second indoor temperature correction value generated by the change in the outdoor environment temperature is a negative value.

[0132] The second relationship: when the temperature difference between the outdoor environment temperature and the outdoor environment reference temperature is a positive value, the second indoor temperature correction value generated by the change in the outdoor environment temperature is determined to be a positive value.

[0133] The third relationship: when the temperature difference between the outdoor environment temperature and the outdoor environment reference temperature is zero, the second indoor temperature correction value generated by the change of the outdoor environment temperature is determined to be zero.

[0134] In addition, it should be noted that the updating of the indoor set temperature according to the temperature correction value and the temperature upper limit value in the above step S330 may include but is not limited to: Fig.11 or Fig.12 There are two implementation scenarios, as follows:

[0135] like Fig.11 As shown, Fig.11 This is a flow chart of a control method for a heat pump device based on power consumption provided by another embodiment of the present application. The updating of the indoor set temperature according to the temperature correction value and the temperature upper limit value in the above step S330 may include but is not limited to step S1110 and step S1120.

[0136] Step S1110, determining a strategy setting temperature according to the temperature correction value and the temperature upper limit value;

[0137] Step S1120: When the indoor set temperature is lower than the strategic set temperature, the indoor set temperature is updated to the strategic set temperature.

[0138] like Fig.12 As shown, Fig.12 This is a flow chart of a control method for a heat pump device based on power consumption provided by another embodiment of the present application. The updating of the indoor set temperature according to the temperature correction value and the temperature upper limit value in the above step S330 may include but is not limited to step S1210 and step S1220.

[0139] Step S1210, determining a strategy setting temperature according to the temperature correction value and the temperature upper limit value;

[0140] Step S1220: When the indoor set temperature is greater than or equal to the strategy set temperature, the indoor set temperature is kept unchanged.

[0141] In one embodiment, after obtaining the temperature correction value and the temperature upper limit value, the embodiment of the present application can use the difference between the temperature upper limit value and the temperature correction value as the strategic setting temperature; if there is surplus electricity in the system, the embodiment of the present application can be used to strengthen space heating, for example, the indoor setting temperature can be appropriately increased to the strategic setting temperature. At this time, if the indoor setting temperature is already the strategic setting temperature, then there is no need to adjust the indoor setting temperature; if the indoor setting temperature does not reach the strategic setting temperature, then the embodiment of the present application can increase the indoor setting temperature of the space heating mode to the strategic setting temperature, consuming the surplus electricity while ensuring the user's physical comfort.

[0142] Based on the control method of the heat pump device based on power consumption in the above-mentioned embodiments, overall embodiments of the control method of the heat pump device based on power consumption of the present application are respectively proposed below.

[0143] like Fig.13 As shown, Fig.13 It is an overall step flow chart of a control method for a heat pump device based on power consumption provided by an embodiment of the present application, including but not limited to the following steps S1310 to S1380.

[0144] Step S1310, determine whether the heat pump device is currently in space heating operation and has no hot water demand, if so, execute step S1320, if not, execute step S1360.

[0145] Step S1320, determine whether the conditions of battery SOC≥SOC_on and online power≥Pto_grid are met, if so, execute step S1330, if not, execute step S1340.

[0146] Step S1330, determine whether the compressor is in the frequency reduction operation stage, if so, execute step S1350, if not, execute step S1370.

[0147] Step S1340, determine whether the condition that battery SOC < SOC_off or power taken ≥ Pfrom_grid is met, if so, execute step S1360, if not, execute step S1370.

[0148] Step S1350, determine whether the indoor set temperature is less than the strategic set value Ts', if so, execute step S1380, if not, execute step S1370.

[0149] Step S1360: If Ts=Ts', restore Ts to the original setting value.

[0150] Step S1370: Run as usual, i.e., no policy action is taken.

[0151] Step S1380: Let Ts=Ts'.

[0152] Specifically, based on the above Fig.13 , the control method includes the following implementation steps:

[0153] 1. Determine whether the ATW heat pump is in space heating operation and there is no demand for hot water. If not, if the indoor set temperature Ts has been raised to Ts' = T_max-ΔT1-ΔT2, then restore to the original indoor set temperature. Wherein, [T_min, T_max] is the user temperature comfort range, T_max is the upper limit of the user temperature comfort range, ΔT1 is the temperature correction value generated by the thermal inertia of the building, ΔT2 is the temperature correction value generated by the change of the outdoor ambient temperature, and the indoor ambient temperature rises by ΔT1 due to the thermal inertia of the building after the heating is stopped at the outdoor ambient temperature T4_0, ΔT4 = T4-T4_0, ΔT2 = f(ΔT4); when ΔT4 < 0, ΔT2 is a negative value; when ΔT4 = 0, ΔT2 is 0; when ΔT4 > 0, ΔT2 is a positive value, where T4 is the outdoor ambient temperature and T4_0 is the outdoor ambient reference temperature. If so, execute step 2.

[0154] 2. Determine whether the battery SOC≥SOC_on and the online power≥Pto_grid are satisfied. If so, determine whether the condition ① is whether the compressor is in the frequency reduction operation stage and the indoor set temperature Ts<strategy set value Ts'. If not, determine whether the condition ② is battery SOC<SOC_off or the power taken ≥Pfrom_grid. Among them, the battery SOC is the amount of electricity stored in the energy storage unit, SOC_on is the first preset amount of electricity mentioned above, SOC_off is the second preset amount of electricity mentioned above, Pto_grid is the first preset power mentioned above, and Pfrom_grid is the second preset power mentioned above.

[0155] 3. If condition ① is met, then Ts = Ts'. If ① is not met, then the system will continue to operate as usual, i.e. the strategy will not take any action. If condition ② is met, if the indoor set temperature Ts has been raised to Ts' = T_max - ΔT1 - ΔT2, then the system will be restored to the original indoor set temperature. If ② is not met, then the system will continue to operate as usual, i.e. the strategy will not take any action.

[0156] Based on the above control method, the embodiments of the present application include but are not limited to the following advantages: 1. Comprehensively utilize the heat storage capacity of buildings and indoor air for power consumption, such as photovoltaic consumption, to increase the amount of photovoltaic consumption. 2. When utilizing the heat storage of buildings and indoor air, the thermal inertia of the building and the change of outdoor ambient temperature are taken into account to ensure the comfort of users. 3. Utilizing the heat storage of buildings and indoor air can simultaneously increase the start and stop time of the compressor and extend the service life of the compressor.

[0157] Based on the control methods of the above-mentioned embodiments, various embodiments of the controller, heat pump device, linkage system and computer-readable storage medium of the present application are respectively proposed below.

[0158] like Fig.14 As shown, Fig.14 800 implemented in the present application includes: a processor 810, a memory 820, and a computer program stored in the memory 820 and executable on the processor 810, wherein: Fig.14 In the figure, a processor 810 and a memory 820 are taken as an example.

[0159] The processor 810 and the memory 820 may be connected via a bus or other means. Fig.14 The example of connecting through bus is taken in the following.

[0160] The memory 820, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 820 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 820 may optionally include a memory 820 remotely arranged relative to the processor 810, and these remote memories 820 may be connected to the controller 800 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0161] Those skilled in the art will understand that Fig.14 The device structure shown in the figure does not constitute a limitation on the controller 800, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0162] exist Fig.14 In the controller 800 shown, the processor 810 can be used to call the control program of the heat pump device based on power consumption stored in the memory 820, so as to implement the above control method. Specifically, the non-transient software program and instructions required to implement the control method of the above embodiment are stored in the memory 820, and when executed by the processor 810, the control method of the above embodiment is executed.

[0163] It is worth noting that since the controller 800 of the embodiment of the present application can execute the control method of any of the above embodiments, the specific implementation methods and technical effects of the controller 800 of the embodiment of the present application can refer to the specific implementation methods and technical effects of the control method of any of the above embodiments.

[0164] In addition, an embodiment of the present application further provides a heat pump device, comprising a controller of the above embodiment, wherein the controller executes the control method of any of the above embodiments when running a computer program.

[0165] It is worth noting that since the heat pump device of the embodiment of the present application includes the controller of the above-mentioned embodiment, and the controller of the above-mentioned embodiment can execute the control method of any of the above-mentioned embodiments, the specific implementation manner and technical effects of the heat pump device of the embodiment of the present application can refer to the specific implementation manner and technical effects of the control method of any of the above-mentioned embodiments.

[0166] In addition, an embodiment of the present application further provides a linkage system, including a power generation and energy storage device and the heat pump device of the above embodiment, wherein the power generation and energy storage device is connected to the heat pump device.

[0167] It is worth noting that since the linkage system of the embodiment of the present application includes the heat pump device of the above-mentioned embodiment, and the heat pump device of the above-mentioned embodiment includes the controller of the above-mentioned embodiment, and the controller of the above-mentioned embodiment can execute the control method of any of the above-mentioned embodiments, therefore, the specific implementation methods and technical effects of the linkage system of the embodiment of the present application can refer to the specific implementation methods and technical effects of the control method of any of the above-mentioned embodiments.

[0168] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-described control method. Figures 3 to 13 The method steps in .

[0169] It is worth noting that since the computer-readable storage medium of the embodiments of the present application can execute the control method of any of the above embodiments, the specific implementation methods and technical effects of the computer-readable storage medium of the embodiments of the present application can refer to the specific implementation methods and technical effects of the control method of any of the above embodiments.

[0170] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0171] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A control method for a heat pump device based on power consumption, characterized in that: The heat pump device is used to be connected to a power generation and energy storage device, the power generation and energy storage device includes a power generation component and an energy storage unit, and the power generation component is respectively connected to the energy storage unit, the heat pump device and the power grid; the control method includes: Obtaining the indoor set temperature, the temperature correction value and the temperature upper limit value of the user's temperature comfort zone, wherein the temperature correction value is determined by the outdoor environment reference temperature; In a space heating operation mode and when there is no demand for hot water, obtaining the stored power of the energy storage unit and the grid-connected power supplied by the power generation and energy storage device to the grid; When the stored power is greater than or equal to the first preset power and the online power is greater than or equal to the first preset power, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value.

2. The control method according to claim 1, characterized in that: After acquiring the stored electricity of the energy storage unit and the online power supplied to the power grid by the power generation and energy storage device, the control method further includes: When the stored power is less than a second preset power, the indoor set temperature is restored to an original set value, wherein the second preset power is less than or equal to the first preset power.

3. The control method according to claim 1, characterized in that: After acquiring the stored electricity of the energy storage unit and the online power supplied to the power grid by the power generation and energy storage device, the control method further includes: When the stored power is less than a first preset power or the online power is less than a first preset power, obtaining the power taken by the load from the power grid; When the power taken is greater than or equal to the second preset power, the indoor set temperature is restored to the original set value.

4. The control method according to claim 1, characterized in that: The control method further includes one of the following: When switching to the hot water operation mode, restoring the indoor set temperature to the original set value; In the space heating operation mode and when there is a demand for hot water, the indoor set temperature is restored to the original set value.

5. The control method according to any one of claims 2 to 4, characterized in that: The step of restoring the indoor set temperature to an original set value comprises: When the indoor set temperature has been updated to the strategic set temperature, the indoor set temperature is restored to the original set value, wherein the strategic set temperature is determined by the temperature correction value and the temperature upper limit value.

6. The control method according to claim 1, characterized in that: Before updating the indoor set temperature according to the temperature correction value and the temperature upper limit value, the control method further includes: Get the operating status of the compressor; When it is determined that the compressor is in the frequency reduction operation stage, the indoor set temperature is updated according to the temperature correction value and the temperature upper limit value.

7. The control method according to claim 1, characterized in that: The temperature correction value is determined by at least one of the following steps: Determine a first indoor temperature correction value generated by building thermal inertia based on the outdoor environment reference temperature; The outdoor environment temperature is acquired, and a second indoor temperature correction value generated due to a change in the outdoor environment temperature is determined based on the outdoor environment temperature and the outdoor environment reference temperature.

8. The control method according to claim 7, characterized in that: The determining, based on the outdoor environment temperature and the outdoor environment reference temperature, a second indoor temperature correction value generated by a change in the outdoor environment temperature comprises: Calculating the temperature difference between the outdoor environment temperature and the outdoor environment reference temperature; A second indoor temperature correction value generated due to a change in the outdoor ambient temperature is determined according to the temperature difference.

9. The control method according to claim 8, characterized in that: The determining, according to the temperature difference, a second indoor temperature correction value generated by a change in the outdoor ambient temperature includes one of the following: When the temperature difference is a negative value, determining that the second indoor temperature correction value generated by the change in the outdoor ambient temperature is a negative value; When the temperature difference is a positive value, determining that the second indoor temperature correction value generated by the change in the outdoor ambient temperature is a positive value; When the temperature difference is zero, it is determined that the second indoor temperature correction value generated by the change in the outdoor ambient temperature is zero.

10. The control method according to claim 1, characterized in that: The updating of the indoor set temperature according to the temperature correction value and the temperature upper limit value comprises: Determine a strategic set temperature according to the temperature correction value and the temperature upper limit value; When the indoor set temperature is lower than the strategic set temperature, the indoor set temperature is updated to the strategic set temperature.

11. The control method according to claim 1, characterized in that: The updating of the indoor set temperature according to the temperature correction value and the temperature upper limit value comprises: Determine a strategic set temperature according to the temperature correction value and the temperature upper limit value; When the indoor set temperature is greater than or equal to the strategic set temperature, the indoor set temperature is kept unchanged.

12. A heat pump device based on power consumption, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method according to any one of claims 1 to 11 when executing the computer program.

13. A linkage system based on energy storage and heat pump, characterized in that: It comprises a power generation and energy storage device and a heat pump device as claimed in claim 12, wherein the power generation and energy storage device is connected to the heat pump device.

14. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the control method according to any one of claims 1 to 11.

Images