Heat recovery system, method, device, equipment and medium

Abstract

The embodiment of the invention discloses a heat recovery system, method, device and equipment and a medium. The heat recovery method comprises the steps that the target running state of an air conditioner loop is obtained; when the target operation state is a refrigeration state, the refrigeration sub-loop and the first sub-loop are controlled to operate, a third port of the first three-way proportional valve is closed, and the radiator is controlled to operate in a heat dissipation mode; and when the target operation state is a heating state, the heating sub-loop and the first sub-loop are controlled to operate, and the third port of the first three-way proportional valve is controlled to be communicated with the first port, so that the engine oil in the second sub-loop flows into the first sub-loop. According to the embodiment of the invention, the heat recovery rate of the engine oil is improved, effective utilization of the waste heat of the engine oil is realized, the heating comfort of a passenger compartment is improved, the power consumption of the whole automobile is reduced, and the endurance mileage of the automobile at low temperature is further improved. And in the refrigeration state, the refrigeration influence of heat of engine oil on the air conditioner loop is reduced, and the endurance time of the vehicle-mounted power supply is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a heat recovery system, method, device, equipment and medium. Background Art

[0002] Cars are one of the indispensable means of transportation for people to travel. Cars can be divided into internal combustion engine cars, electric cars, natural gas cars, hybrid electric cars, fuel cell cars, etc. In terms of power, internal combustion engine cars and hybrid electric cars are equipped with engine oil circuits.

[0003] Generally, when the engine is running, the heat of the oil circuit is directly dissipated, resulting in low heat utilization. Therefore, how to improve the heat utilization of the oil circuit is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a heat recovery system, method, device, equipment and medium to solve the technical problem in the prior art that the heat of the oil circuit is directly dissipated, resulting in low heat utilization rate, and achieve the technical effect of improving the heat utilization rate of the oil circuit.

[0005] In a first aspect, the present application provides a heat recovery system, the system comprising a controller, an air conditioning circuit and an oil cooling circuit, wherein heat exchange is performed between the air conditioning circuit and the oil cooling circuit via an oil cooling heat exchanger;

[0006] The air conditioning circuit includes a cooling sub-circuit and a heating sub-circuit;

[0007] The oil cooling circuit includes a first sub-circuit and a second sub-circuit for circulation of engine oil;

[0008] The first sub-circuit includes a radiator, an oil-cooling heat exchanger, a second oil pump, a first port of a second three-way proportional valve, a second port of the second three-way proportional valve, and a radiator connected in sequence;

[0009] The third port of the second three-way proportional valve is connected to the oil pan of the second sub-circuit through a pressure check valve, and the pressure check valve leads to the oil pan from the third port of the second three-way proportional valve;

[0010] The third port of the first three-way proportional valve of the second sub-circuit is connected to the channel connecting the radiator and the second three-way proportional valve;

[0011] The controller is electrically connected to the refrigeration sub-circuit, the heating sub-circuit, the first sub-circuit and the second sub-circuit respectively, and is used to control the refrigeration sub-circuit, the heating sub-circuit, the first sub-circuit and the second sub-circuit to be turned on or off respectively.

[0012] In a second aspect, the present application provides a heat recovery method, which is applied to a heat recovery system provided in the first aspect, and the method comprises:

[0013] Obtain the target operating state of the air conditioning circuit;

[0014] When the target operating state is the cooling state, the cooling sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve is closed to control the radiator to operate in the cooling mode;

[0015] When the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0016] Furthermore, when the target operating state is a heating state, the method further includes:

[0017] When the target operating state is the heating state, the target heating temperature corresponding to the air conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit are monitored;

[0018] When the actual operating temperature is less than or equal to a first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in a heat absorption mode, the third port and the first port of the first three-way proportional valve are controlled to be closed, and the first heating power of the heating sub-circuit is determined according to the actual space temperature of the passenger compartment space corresponding to the heating sub-circuit and the target heating temperature; the first preset threshold is less than the target heating temperature;

[0019] When the actual operating temperature is greater than the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in the heat absorption mode, the third port of the first three-way proportional valve is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit, and the second heating power of the heating sub-circuit is determined according to the actual space temperature, the actual operating temperature and the target heating temperature.

[0020] Furthermore, when the target operating state is the heating state, after monitoring the target heating temperature corresponding to the air conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit, the method further includes:

[0021] When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is greater than a second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, and a first opening degree of the first three-way proportional valve connecting the third port and the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit;

[0022] When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is less than or equal to a second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in the heat absorption mode, and the second opening of the third port of the first three-way proportional valve that is connected to the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0023] Further, when the actual operating temperature is greater than the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, including:

[0024] When the actual operating temperature is greater than the first preset threshold value and the actual operating temperature is less than or equal to the target heating temperature, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in the heat absorption mode, and the openings of the third port and the first port of the first three-way proportional valve are controlled to be maximum, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0025] Further, controlling the operation of the heating sub-loop includes:

[0026] The second electronic expansion valve of the heating sub-circuit and the second full-pass stop valve of the heating sub-circuit are controlled to be turned on, and the first electronic expansion valve of the cooling sub-circuit and the first full-pass stop valve of the cooling sub-circuit are controlled to be closed, so that the heating sub-circuit operates.

[0027] Further, controlling the operation of the refrigeration sub-loop includes:

[0028] The first electronic expansion valve and the first full-pass stop valve of the refrigeration sub-circuit are controlled to be turned on, and the second electronic expansion valve and the second full-pass stop valve of the heating sub-circuit are controlled to be turned off, so that the refrigeration sub-circuit operates.

[0029] In a third aspect, the present application provides a heat recovery device, which is applied to a heat recovery system provided in the first aspect, and the device comprises:

[0030] A state acquisition module, used to obtain the target operating state of the air conditioning circuit;

[0031] A refrigeration control module, used for controlling the refrigeration sub-circuit and the first sub-circuit to operate when the target operating state is the refrigeration state, and closing the third port of the first three-way proportional valve to control the radiator to operate in a heat dissipation mode;

[0032] The heating control module is used to control the operation of the heating sub-circuit and the first sub-circuit when the target operating state is the heating state, and control the third port of the first three-way proportional valve to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0033] Furthermore, the heating control module is used to:

[0034] When the target operating state is the heating state, the target heating temperature corresponding to the air conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit are monitored;

[0035] When the actual operating temperature is less than or equal to a first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in a heat absorption mode, the third port and the first port of the first three-way proportional valve are controlled to be closed, and the first heating power of the heating sub-circuit is determined according to the actual space temperature of the passenger compartment space corresponding to the heating sub-circuit and the target heating temperature; the first preset threshold is less than the target heating temperature;

[0036] When the actual operating temperature is greater than the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in the heat absorption mode, the third port of the first three-way proportional valve is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit, and the second heating power of the heating sub-circuit is determined according to the actual space temperature, the actual operating temperature and the target heating temperature.

[0037] Furthermore, the heating control module is used to:

[0038] When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is greater than a second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, and a first opening degree of the first three-way proportional valve connecting the third port and the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit;

[0039] When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is less than or equal to a second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in the heat absorption mode, and the second opening of the third port of the first three-way proportional valve that is connected to the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0040] Furthermore, the heating control module is used to:

[0041] When the actual operating temperature is greater than the first preset threshold value and the actual operating temperature is less than or equal to the target heating temperature, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in the heat absorption mode, and the openings of the third port and the first port of the first three-way proportional valve are controlled to be maximum, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0042] Furthermore, the heating control module is used to:

[0043] The second electronic expansion valve of the heating sub-circuit and the second full-pass stop valve of the heating sub-circuit are controlled to be turned on, and the first electronic expansion valve of the cooling sub-circuit and the first full-pass stop valve of the cooling sub-circuit are controlled to be closed, so that the heating sub-circuit operates.

[0044] Furthermore, the refrigeration control module is used to:

[0045] The first electronic expansion valve and the first full-pass stop valve of the refrigeration sub-circuit are controlled to be turned on, and the second electronic expansion valve and the second full-pass stop valve of the heating sub-circuit are controlled to be turned off, so that the refrigeration sub-circuit operates.

[0046] In a fourth aspect, the present application provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to implement a heat recovery method as provided in the second aspect.

[0047] In a fifth aspect, the present application provides a computer program product, comprising computer instructions, wherein the computer instructions are executed by a processor to implement a heat recovery method as provided in the second aspect.

[0048] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0049] The embodiment of the present application obtains the target operating state of the air conditioning circuit; when the target operating state is the cooling state, the cooling sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve is closed to control the radiator to operate in the heat dissipation mode; when the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit. It can be seen that the embodiment of the present application realizes the heat exchange between the air conditioning circuit and the oil heat dissipation circuit through the oil cooling heat exchanger, recovers the heat of the oil in the heating state, thereby reducing the energy consumption of the air conditioning equipment using the vehicle power supply, and improving the heat recovery rate of the oil, that is, improving the utilization rate of the heat generated by the oil during operation, realizing the effective utilization of the waste heat of the oil, improving the heating comfort of the passenger compartment, reducing the power consumption of the whole vehicle, and thereby improving the cruising range of the car at low temperatures. In the cooling state, the influence of the heat of the oil on the cooling of the air conditioning circuit is reduced, the energy consumption of the air conditioning equipment using the vehicle power supply is reduced as much as possible, and the cruising time of the vehicle power supply is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0051] Figure 1 A schematic diagram of the structure of a heat recovery system provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of a heat recovery method provided in an embodiment of the present application;

[0053] Figure 3 A schematic diagram of the structure of a heat recovery device provided in an embodiment of the present application.

[0054] Reference numerals:

[0055] 1-gas-liquid separation tank, 2-compressor, 3-first full-pass stop valve, 4-evaporator, 5-in-vehicle condenser, 6-first electronic expansion valve, 7-second electronic expansion valve, 8-second full-pass stop valve, 9-oil cooling heat exchanger, 10-second oil pump, 11-radiator, 12-first three-way proportional valve, 13-engine oil circuit, 14-first oil pump, 15-second three-way proportional valve, 16-pressure check valve, 17-oil pan. DETAILED DESCRIPTION

[0056] The embodiment of the present application solves the technical problem in the prior art that the heat of the oil circuit is directly dissipated, resulting in low heat utilization rate, by providing a heat recovery method.

[0057] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0058] The embodiment of the present application obtains the target operating state of the air conditioning circuit; when the target operating state is the cooling state, the cooling sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is closed, and the radiator 11 is controlled to operate in the heat dissipation mode; when the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit. It can be seen that the embodiment of the present application realizes the heat exchange between the air conditioning circuit and the oil heat dissipation circuit through the oil cooling heat exchanger 9, recovers the heat of the oil in the heating state, thereby reducing the energy consumption of the air conditioning equipment using the vehicle power supply, improving the heat recovery rate of the oil, that is, improving the utilization rate of the heat generated by the oil during operation, realizing the effective utilization of the residual heat of the oil, improving the heating comfort of the passenger compartment, reducing the power consumption of the whole vehicle, and thereby improving the cruising range of the vehicle at low temperatures. In the cooling state, reduce the effect of the heat of the engine oil on the cooling of the air-conditioning circuit, minimize the energy consumption of the air-conditioning equipment using the on-board power supply, and extend the battery life of the on-board power supply.

[0059] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] First of all, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0061] The present application embodiment provides Figure 1 A heat recovery system is shown, the system includes a controller (not shown in Figure 1 As shown in the figure), an air-conditioning circuit and an oil cooling circuit, heat exchange is performed between the air-conditioning circuit and the oil cooling circuit via an oil cooling heat exchanger 9; the air-conditioning circuit includes a refrigeration sub-circuit and a heating sub-circuit; the oil cooling circuit includes a first sub-circuit and a second sub-circuit for circulation of engine oil.

[0062] The gas-liquid separation tank 1, the compressor 2, the first full-pass stop valve 3, the oil-cooled heat exchanger 9, the first electronic expansion valve 6, the evaporator 4 and the gas-liquid separation tank 1 of the air conditioning circuit are connected in sequence to form a refrigeration sub-circuit.

[0063] The gas-liquid separation tank 1, the compressor 2, the in-vehicle condenser 5, the second electronic expansion valve 7, the oil-cooled heat exchanger 9, the second full-pass stop valve 8, and the gas-liquid separation tank 1 of the air-conditioning circuit are connected in sequence to form a heating sub-circuit.

[0064] The radiator 11, the oil cooling heat exchanger 9, the second oil pump 10, the first port of the second three-way proportional valve 15, the second port of the second three-way proportional valve 15 and the radiator 11 of the oil cooling circuit are connected in sequence to form a first sub-circuit.

[0065] The first oil pump 14 of the oil cooling circuit, the engine oil circuit 13, the first port of the first three-way proportional valve 12, the second port of the first three-way proportional valve 12, the oil pan 17, and the first oil pump 14 are sequentially connected to form a second sub-circuit.

[0066] The third port of the second three-way proportional valve 15 is connected to the oil pan 17 through the pressure check valve 16, and the pressure check valve 16 is connected to the oil pan 17 from the third port of the second three-way proportional valve 15. The pressure check valve 16 can only be opened under a certain pressure, and the flow is one-way, ensuring that the first sub-circuit is always full of oil and will not flow back into the oil pan 17 due to gravity. The first oil pump 14 is linked to the engine, and the second three-way proportional valve 15 defaults to the first port being connected to the second port.

[0067] The third port of the first three-way proportional valve 12 is connected to the passage connecting the radiator 11 and the second three-way proportional valve 15 .

[0068] In actual operation, in addition to the above-mentioned circuits and related equipment, some sensors are also set up accordingly. Figure 1 The corresponding pressure temperature sensors PT1 and PT2, and the temperature sensors T1 and T2 for measuring the temperature of the oil cooling circuit. The relevant sensors can be set according to actual conditions, and the embodiment of the present application does not limit this.

[0069] The controller is electrically connected to the refrigeration sub-circuit, the heating sub-circuit, the first sub-circuit and the second sub-circuit respectively, and is used to control the refrigeration sub-circuit, the heating sub-circuit, the first sub-circuit and the second sub-circuit to be turned on or off respectively.

[0070] Specifically, the controller is electrically connected to the following devices respectively:

[0071] The first full-pass stop valve 3, the second full-pass stop valve 8, the first electronic expansion valve 6, the second electronic expansion valve 7, the radiator 11, the first oil pump 14, the second oil pump 10, the second three-way proportional valve 15, the first three-way proportional valve 12, PT1, PT2, T1 and T2 and other electronic control devices.

[0072] The embodiment of the present application couples the air conditioning circuit and the oil cooling circuit through the oil cooling heat exchanger 9, so that the air conditioning circuit can recover the heat of the oil cooling circuit in the heating state, thereby improving the heat utilization rate of the oil circuit, reducing the vehicle's energy consumption, and extending the vehicle's driving mileage.

[0073] Based on the same inventive concept, the present application embodiment provides the following Figure 2 A heat recovery method shown is applied to a heat recovery system as provided above, specifically to a controller of a heat recovery system, and the method includes steps S21 to S23.

[0074] Step S21, obtaining the target operating state of the air conditioning circuit;

[0075] Step S22, when the target operating state is the cooling state, the cooling sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is closed to control the radiator 11 to operate in the heat dissipation mode;

[0076] Step S23, when the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0077] A heat recovery method provided in an embodiment of the present application can be executed by an on-board controller of a vehicle where an air-conditioning circuit is located, or can be executed by an air-conditioning controller corresponding to the air-conditioning circuit. The embodiment of the present application only takes the air-conditioning controller as an example for subsequent description.

[0078] Regarding step S21 , the target operating state of the air-conditioning circuit is acquired.

[0079] The operating state of the air conditioning circuit includes a working state and a non-working state, wherein the working state includes a cooling state and a heating state. A state identifier corresponding to the air conditioning circuit can be read, and the operating state of the air conditioning circuit can be determined based on the state identifier.

[0080] When the target operating state is a non-operating state, it means that the heat of the oil circuit can only be lost, and the first port and the third port of the first three-way proportional valve 12 can be controlled to be connected. When the first port and the third port of the first three-way proportional valve 12 are connected, the radiator 11 in the first sub-circuit can be controlled to dissipate heat, thereby improving the heat dissipation effect of the engine oil circuit 13 and ensuring that the engine oil circuit 13 operates at a suitable temperature.

[0081] When the target operation state is the cooling state, step S22 may be continued to be performed. When the target operation state is the heating state, step S23 may be continued to be performed.

[0082] Regarding step S22, when the target operating state is the cooling state, the cooling sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is closed to control the radiator 11 to operate in the heat dissipation mode.

[0083] When the target operating state is the cooling state, it means that the heat of the oil circuit can only be lost.

[0084] Control the operation of the refrigeration sub-circuit, combined with Figure 1 As shown, specifically, the first electronic expansion valve 6 and the first full-pass stop valve 3 are controlled to be turned on, and the second electronic expansion valve 7 and the second full-pass stop valve 8 are controlled to be turned off, so that the refrigeration sub-circuit operates.

[0085] On this basis, the first sub-circuit is also controlled to operate in the heat dissipation mode, specifically, the radiator 11 is controlled to dissipate the heat in the oil circuit to the outside, that is, to operate in the heat dissipation mode. The radiator 11 can be adjusted to be in the heat dissipation mode or the heat absorption mode by changing the rotation direction of the fan.

[0086] The oil heat exchanger 9 absorbs the heat of the vehicle passenger compartment, and then dissipates the heat of the oil heat exchanger 9 when the radiator 11 of the first sub-circuit dissipates the heat, which can reduce the energy consumption of the air conditioning circuit on the whole vehicle to a certain extent.

[0087] In addition, it is also necessary to close the third port of the first three-way proportional valve 12 to prevent the heat of the engine oil circuit 13 from flowing into the first sub-circuit through the third port, thereby preventing the temperature of the oil heat exchanger 9 from rising, and further preventing the air-conditioning circuit from using more energy to cool the oil circuit, which can avoid the increase in energy consumption of the air-conditioning circuit for the entire vehicle to a certain extent.

[0088] Regarding step S23, when the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0089] When the target operating state is the heating state, the heat of the oil circuit can be recovered and utilized.

[0090] The heating sub-circuit is controlled to operate, specifically, the second electronic expansion valve 7 and the second full-pass stop valve 8 are controlled to be turned on, and the first electronic expansion valve 6 and the first full-pass stop valve 3 are controlled to be turned off, so that the heating sub-circuit operates.

[0091] Controlling the operation of the first sub-circuit specifically controls the second oil pump 10 to drive the oil in the pipeline to move. As for the state of the radiator 11, it can be determined according to the heat level (i.e. temperature) of the engine oil circuit 13 and the target heating temperature of the air conditioning circuit.

[0092] By controlling the third port of the first three-way proportional valve 12 to be in communication with the first port, the oil in the second sub-circuit can flow into the first sub-circuit, bringing the heat of the engine oil circuit 13 to the first sub-circuit. As for the opening degree of the connection between the third port of the first three-way proportional valve 12 and the first port, it can be determined according to the heat level (that is, the temperature level) of the engine oil circuit 13 and the target heating temperature of the air conditioning circuit.

[0093] Furthermore, when the target operating state is a heating state, the method further includes:

[0094] Step S231, when the target operating state is the heating state, monitoring the target heating temperature corresponding to the air conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit;

[0095] Step S232, when the actual operating temperature is less than or equal to the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, the third port and the first port of the first three-way proportional valve 12 are controlled to be closed, and the first heating power of the heating sub-circuit is determined according to the actual space temperature of the passenger compartment space corresponding to the heating sub-circuit and the target heating temperature; the first preset threshold is less than the target heating temperature;

[0096] Step S233, when the actual operating temperature is greater than the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, the third port of the first three-way proportional valve 12 is controlled to be connected to the first port, so that the oil in the second sub-circuit flows to the first sub-circuit, and the second heating power of the heating sub-circuit is determined according to the actual space temperature, the actual operating temperature and the target heating temperature.

[0097] Regarding step S231, the target heating temperature is set by the user and is the temperature that the user wants the passenger compartment space to eventually reach. The actual operating temperature is the actual temperature of the oil cooling circuit, which can be specifically Figure 1 The target heating temperature is changed according to the user's adjustment, and the target heating temperature is updated after the user's adjustment of the target heating temperature is detected.

[0098] When the target operating state is the heating state, the relationship between the actual operating temperature and the first preset threshold is determined. The first preset threshold is used to determine whether the oil heat recovery is necessary. The specific value can be set according to actual needs, for example, it can be 25°C. When the actual operating temperature is less than or equal to the first preset threshold, step S232 can be continued. When the actual operating temperature is greater than the first preset threshold, step S233 can be continued.

[0099] Regarding step S232, when the actual operating temperature is less than or equal to the first preset threshold, it means that the heat of the oil circuit cannot be recovered. The embodiment of the present application controls the radiator 11 to operate in the heat absorption mode to provide a small amount of heat to the oil cooling heat exchanger 9 through the radiator 11, thereby reducing the energy consumption of the whole vehicle by the air conditioning circuit heating to a certain extent. The third port and the first port of the first three-way proportional valve 12 are controlled to be closed to prevent the low-temperature oil in the engine oil circuit 13 from flowing into the first sub-circuit, and to prevent the oil in the second sub-circuit from absorbing heat from the first sub-circuit and the air conditioning circuit, thereby avoiding the energy consumption of the whole vehicle by the air conditioning circuit heating.

[0100] Since heat cannot be recovered from the engine oil circuit 13, the heating sub-circuit needs to determine the heating power based on the actual space temperature of the passenger compartment space and the target heating temperature.

[0101] Regarding step S233, when the actual operating temperature is greater than the first preset threshold value, it means that the heat of the engine oil circuit 13 can be recovered. On the basis of controlling the operation of the heating sub-circuit, the operation of the first sub-circuit is controlled, and the first port and the third port of the first three-way proportional valve 12 are controlled to be connected, so that the oil in the second sub-circuit can flow into the first sub-circuit, and the heat of the oil can be brought to the oil-cooling heat exchanger 9, providing heat for the air-conditioning circuit, reducing the energy consumption of the whole vehicle by the air-conditioning circuit heating, and improving the utilization rate of the heat of the oil circuit.

[0102] The radiator 11 can also be controlled to operate in a heat absorption mode to provide a small amount of heat to the oil cooling heat exchanger 9 through the radiator 11, thereby reducing the energy consumption of the entire vehicle by the air conditioning circuit heating to a certain extent.

[0103] In this case, the air-conditioning circuit can determine the heating power of the heating sub-circuit according to the actual space temperature, the actual operating temperature and the target heating temperature to meet the user's heating needs for the passenger compartment.

[0104] Furthermore, when the target operating state is the heating state, after monitoring the target heating temperature corresponding to the air-conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit, the method further includes steps S234 and S235.

[0105] Step S234, when the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is greater than the second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, and the first opening of the third port and the first port of the first three-way proportional valve 12 is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0106] Step S235, when the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is less than or equal to the second preset threshold value, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, and the second opening of the third port of the first three-way proportional valve 12 that is connected to the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0107] Regarding step S234, when the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is greater than the second preset threshold, it means that the heat of the oil circuit is sufficient and the heating sub-circuit and the first sub-circuit can be controlled to operate.

[0108] On this basis, the first opening of the third port of the first three-way proportional valve 12 connected to the first port can be determined according to the difference between the actual operating temperature and the target heating temperature, thereby controlling the flow of the oil in the second sub-circuit to the first sub-circuit.

[0109] When the temperature difference is large, the heat of the oil in the second sub-circuit is mainly used as the energy source for heating the air conditioning circuit. The higher the utilization rate of the heat in the second sub-circuit, the less energy the air conditioning circuit consumes for the entire vehicle. Therefore, the first opening needs to be as large as possible.

[0110] Regarding step S235, when the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is less than or equal to the second preset threshold value, it means that the heat of the oil circuit is not sufficient. On the basis of controlling the operation of the heating sub-circuit and the first sub-circuit, the radiator 11 can be controlled to operate in the heat absorption mode to provide a small amount of heat to the oil heat exchanger 9 through the radiator 11, thereby reducing the energy consumption of the whole vehicle by the air-conditioning circuit heating to a certain extent.

[0111] On this basis, the second opening of the third port of the first three-way proportional valve 12 connected to the first port can be determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows to the first sub-circuit, thereby controlling the flow of the oil in the second sub-circuit to the first sub-circuit.

[0112] When the temperature difference is large, the heat of the oil in the second sub-circuit is mainly used as the energy source for heating the air conditioning circuit. The higher the utilization rate of the heat in the second sub-circuit, the less energy the air conditioning circuit consumes for the entire vehicle. Therefore, the second opening needs to be as large as possible.

[0113] Further, when the actual operating temperature is greater than the first preset threshold value, and the actual operating temperature is less than or equal to the target heating temperature, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, and the third port and the first port of the first three-way proportional valve 12 are controlled to have the maximum opening, so that the oil in the second sub-circuit flows into the first sub-circuit. Controlling the third port and the first port of the first three-way proportional valve 12 to have the maximum opening can maximize the use of the heat of the oil circuit and improve the heat recovery rate.

[0114] In summary, the embodiment of the present application obtains the target operating state of the air conditioning circuit; when the target operating state is the cooling state, the cooling sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is closed, and the radiator 11 is controlled to operate in the heat dissipation mode; when the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve 12 is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit. It can be seen that the embodiment of the present application realizes the heat exchange between the air conditioning circuit and the oil heat dissipation circuit through the oil cooling heat exchanger 9, recovers the heat of the oil in the heating state, thereby reducing the energy consumption of the air conditioning equipment using the vehicle power supply, improving the heat recovery rate of the oil, that is, improving the utilization rate of the heat generated by the oil during operation, realizing the effective utilization of the residual heat of the oil, improving the heating comfort of the passenger compartment, reducing the power consumption of the whole vehicle, and thus improving the cruising range of the vehicle at low temperatures. In the cooling state, reduce the effect of the heat of the engine oil on the cooling of the air-conditioning circuit, minimize the energy consumption of the air-conditioning equipment using the on-board power supply, and extend the battery life of the on-board power supply.

[0115] Based on the same inventive concept, the present application embodiment provides the following Figure 3 A heat recovery device shown is applied to a heat recovery system as provided above, and the device comprises:

[0116] A state acquisition module 31 is used to acquire a target operating state of an air conditioning circuit;

[0117] The cooling control module 32 is used to control the cooling sub-circuit and the first sub-circuit to operate when the target operating state is the cooling state, and to close the third port of the first three-way proportional valve 12 to control the radiator 11 to operate in the cooling mode;

[0118] The heating control module 33 is used to control the operation of the heating sub-circuit and the first sub-circuit when the target operating state is the heating state, and control the third port of the first three-way proportional valve 12 to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0119] Furthermore, the heating control module 33 is used to:

[0120] When the target operating state is the heating state, the target heating temperature corresponding to the air conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit are monitored;

[0121] When the actual operating temperature is less than or equal to the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, the third port and the first port of the first three-way proportional valve 12 are controlled to be closed, and the first heating power of the heating sub-circuit is determined according to the actual space temperature of the passenger compartment space corresponding to the heating sub-circuit and the target heating temperature; the first preset threshold is less than the target heating temperature;

[0122] When the actual operating temperature is greater than the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, the third port of the first three-way proportional valve 12 is controlled to be connected to the first port, so that the oil in the second sub-circuit flows to the first sub-circuit, and the second heating power of the heating sub-circuit is determined according to the actual space temperature, the actual operating temperature and the target heating temperature.

[0123] Furthermore, the heating control module 33 is used to:

[0124] When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is greater than a second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, and the first opening of the third port of the first three-way proportional valve 12 is determined to be connected to the first port according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit;

[0125] When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is less than or equal to the second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, and the second opening of the third port of the first three-way proportional valve 12 that is connected to the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0126] Furthermore, the heating control module 33 is used to:

[0127] When the actual operating temperature is greater than the first preset threshold value and the actual operating temperature is less than or equal to the target heating temperature, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator 11 is controlled to operate in the heat absorption mode, and the openings of the third port and the first port of the first three-way proportional valve 12 are controlled to be maximum, so that the oil in the second sub-circuit flows into the first sub-circuit.

[0128] Furthermore, the heating control module 33 is used to:

[0129] The second electronic expansion valve 7 of the heating sub-circuit and the second full-pass stop valve 8 of the heating sub-circuit are controlled to be turned on, and the first electronic expansion valve 6 of the cooling sub-circuit and the first full-pass stop valve 3 of the cooling sub-circuit are controlled to be closed, so that the heating sub-circuit operates.

[0130] Furthermore, the refrigeration control module 32 is used to:

[0131] The first electronic expansion valve 6 of the refrigeration sub-circuit and the first full-pass stop valve 3 of the refrigeration sub-circuit are controlled to be turned on, and the second electronic expansion valve 7 of the heating sub-circuit and the second full-pass stop valve 8 of the heating sub-circuit are controlled to be closed, so that the refrigeration sub-circuit operates.

[0132] Based on the same inventive concept, an embodiment of the present application provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device can implement a heat recovery method as provided above.

[0133] Based on the same inventive concept, an embodiment of the present application provides a computer program product, including computer instructions, which are executed by a processor to implement a heat recovery method as provided in the second aspect.

[0134] Since the electronic device introduced in the embodiment of the present application is an electronic device used to implement the information processing method in the embodiment of the present application, based on the information processing method introduced in the embodiment of the present application, a person skilled in the art can understand the specific implementation of the electronic device in the embodiment of the present application and its various variations, so how the electronic device implements the method in the embodiment of the present application is not described in detail here. As long as a person skilled in the art implements the electronic device used in the information processing method in the embodiment of the present application, it belongs to the scope of protection of this application.

[0135] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0136] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0137] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0138] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0139] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0140] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A heat recovery system, characterized in that: The system includes a controller, an air conditioning circuit and an oil cooling circuit, and heat exchange is performed between the air conditioning circuit and the oil cooling circuit via an oil cooling heat exchanger; The air conditioning circuit includes a cooling sub-circuit and a heating sub-circuit; The oil cooling circuit includes a first sub-circuit and a second sub-circuit for circulation of engine oil; The first sub-circuit includes a radiator, the oil-cooling heat exchanger, a second oil pump, a first port of a second three-way proportional valve, a second port of the second three-way proportional valve, and the radiator, which are connected in sequence; The third port of the second three-way proportional valve is connected to the oil pan of the second sub-circuit through a pressure check valve, and the pressure check valve leads to the oil pan from the third port of the second three-way proportional valve; The third port of the first three-way proportional valve of the second sub-circuit is connected to the channel connecting the radiator and the second three-way proportional valve; The controller is electrically connected to the refrigeration sub-circuit, the heating sub-circuit, the first sub-circuit and the second sub-circuit respectively, and is used to control the refrigeration sub-circuit, the heating sub-circuit, the first sub-circuit and the second sub-circuit to be turned on or off respectively.

2. A heat recovery method, characterized in that: Applied to a heat recovery system as claimed in claim 1, the method comprises: obtaining a target operating state of the air conditioning circuit; When the target operating state is a cooling state, controlling the cooling sub-circuit and the first sub-circuit to operate, and closing the third port of the first three-way proportional valve to control the radiator to operate in a cooling mode; When the target operating state is the heating state, the heating sub-circuit and the first sub-circuit are controlled to operate, and the third port of the first three-way proportional valve is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

3. The method according to claim 2, characterized in that When the target operating state is a heating state, the method further includes: When the target operating state is a heating state, monitoring a target heating temperature corresponding to the air conditioning circuit and an actual operating temperature corresponding to the oil cooling circuit; When the actual operating temperature is less than or equal to a first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in a heat absorption mode, the third port and the first port of the first three-way proportional valve are controlled to be closed, and the first heating power of the heating sub-circuit is determined according to the actual space temperature of the passenger compartment space corresponding to the heating sub-circuit and the target heating temperature; the first preset threshold is less than the target heating temperature; When the actual operating temperature is greater than the first preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in a heat absorption mode, the third port of the first three-way proportional valve is controlled to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit, and the second heating power of the heating sub-circuit is determined according to the actual space temperature, the actual operating temperature and the target heating temperature.

4. The method according to claim 3, characterized in that When the target operating state is a heating state, after monitoring the target heating temperature corresponding to the air conditioning circuit and the actual operating temperature corresponding to the oil cooling circuit, the method further includes: When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is greater than a second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, and a first opening degree of the first three-way proportional valve connecting the third port and the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit; When the actual operating temperature is greater than the target heating temperature, and the difference between the actual operating temperature and the target heating temperature is less than or equal to the second preset threshold, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in a heat absorption mode, and a second opening degree of the first three-way proportional valve that connects the third port to the first port is determined according to the difference between the actual operating temperature and the target heating temperature, so that the oil in the second sub-circuit flows into the first sub-circuit.

5. The method according to claim 3, characterized in that When the actual operating temperature is greater than the first preset threshold, controlling the heating sub-circuit and the first sub-circuit to operate includes: When the actual operating temperature is greater than the first preset threshold value and the actual operating temperature is less than or equal to the target heating temperature, the heating sub-circuit and the first sub-circuit are controlled to operate, the radiator is controlled to operate in a heat absorption mode, and the openings of the third port and the first port of the first three-way proportional valve are controlled to be maximum, so that the oil in the second sub-circuit flows into the first sub-circuit.

6. The method according to any one of claims 2 to 5, characterized in that: Controlling the operation of the heating sub-loop includes: The second electronic expansion valve of the heating sub-circuit and the second full-pass stop valve of the heating sub-circuit are controlled to be turned on, and the first electronic expansion valve of the cooling sub-circuit and the first full-pass stop valve of the cooling sub-circuit are controlled to be closed, so that the heating sub-circuit operates.

7. The method according to claim 2, characterized in that Controlling the operation of the refrigeration sub-loop includes: The first electronic expansion valve and the first full-pass stop valve of the refrigeration sub-circuit are controlled to be turned on, and the second electronic expansion valve and the second full-pass stop valve of the heating sub-circuit are controlled to be closed, so that the refrigeration sub-circuit operates.

8. A heat recovery device, characterized in that: Applicable to a heat recovery system as claimed in claim 1, the device comprising: A state acquisition module, used to acquire a target operating state of the air conditioning circuit; a refrigeration control module, configured to control the refrigeration sub-circuit and the first sub-circuit to operate when the target operating state is a refrigeration state, and to close the third port of the first three-way proportional valve to control the radiator to operate in a heat dissipation mode; The heating control module is used to control the operation of the heating sub-circuit and the first sub-circuit when the target operating state is the heating state, and control the third port of the first three-way proportional valve to be connected to the first port, so that the oil in the second sub-circuit flows into the first sub-circuit.

9. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to implement a heat recovery method as claimed in any one of claims 2 to 7.

10. A computer program product, characterized in that The method comprises computer instructions, wherein the computer instructions are executed by a processor to implement a heat recovery method according to any one of claims 2 to 7.

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