Heat pump heat absorption control system and vehicle

Abstract

The embodiment of the invention relates to a heat pump heat absorption control system and a vehicle. The system comprises an environment heat absorption branch, an electric equipment heat absorption branch, a heat pump heating branch and a heat exchanger. The environment heat absorption branch is connected with the refrigerant side of the heat exchanger through a pipeline, and the environment heat absorption branch is connected with the heat pump heating branch through a pipeline. The heat pump heating branch is connected with the refrigerant side through a pipeline; the electric equipment heat absorption branch is connected with the cooling water side of the heat exchanger through a pipeline; the heat exchanger is used for conducting heat absorbed by the cooling water side to the refrigerant side and conducting heat absorbed by a refrigerant in the refrigerant side to the heat pump heating branch. According to the embodiment of the invention, the heat pump system is assisted to absorb heat in multiple modes, the utilization rate of equipment and environment waste heat is increased, heat waste is avoided, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This application relates to the technical field of heat pumps, and particularly to a heat pump heat absorption control system and a vehicle. Background Art

[0002] With the increasing awareness of global climate change and environmental protection, energy conservation and emission reduction have become issues of utmost concern. Heat pump technology is a technology that uses low-grade heat energy to transfer heat from a low-temperature object to a high-temperature object through evaporation and condensation processes. As an important part of an automobile, the performance of the vehicle's thermal management system directly affects the energy efficiency and comfort of the vehicle.

[0003] The vehicle's thermal management system usually combines the engine cooling system and the air conditioning system, and heats the air inside the vehicle through the heat of the engine coolant and the waste heat of the air conditioning compressor. However, these methods have certain limitations. For example, in cold weather, the temperature of the engine coolant may be low and unable to provide enough heat to warm the air inside the vehicle. Moreover, the waste heat generated by electrical devices in the vehicle (such as battery packs, electric drive devices, etc.) cannot be fully utilized, resulting in waste of a part of the heat. Therefore, how to improve the overall vehicle heat utilization rate and make full use of the waste heat generated in the system has become an urgent problem to be solved in the field of vehicle thermal management systems. Summary of the Invention

[0004] In view of this, to solve some or all of the above technical problems, embodiments of this application provide a heat pump heat absorption control system and a vehicle.

[0005] In a first aspect, embodiments of this application provide a heat pump heat absorption control system, which includes: an environmental heat absorption branch, an electrical device heat absorption branch, a heat pump heating branch, and a heat exchanger; the environmental heat absorption branch is connected to the refrigerant side of the heat exchanger through a pipeline, and the environmental heat absorption branch is connected to the heat pump heating branch through a pipeline; the heat pump heating branch is connected to the refrigerant side through a pipeline; the electrical device heat absorption branch is connected to the cooling water side of the heat exchanger through a pipeline; the heat exchanger is used to conduct the heat absorbed by the cooling water side to the refrigerant side, and conduct the heat absorbed by the refrigerant in the refrigerant side to the heat pump heating branch.

[0006] In a possible implementation, the system further includes a controller, and a temperature sensor is provided on the electrical device heat absorption branch; a first valve is provided on the flow pipeline of the refrigerant side, and the first valve and the temperature sensor are connected to the controller; the controller is configured to: control the first valve to open when the temperature collected by the temperature sensor meets the first heat absorption condition.

[0007] In a possible implementation, the electrical device heat absorption branch includes a battery pack heat absorption branch and an electric drive heat absorption branch, and the battery pack heat absorption branch and the electric drive heat absorption branch are connected through a pipeline.

[0008] In a possible implementation, a multi-way valve is provided between the battery pack heat absorption branch and the electric drive heat absorption branch, and the controller is electrically connected to the multi-way valve; the temperature sensing subsystem includes a first temperature sensor, a second temperature sensor, a third temperature sensor, and a fourth temperature sensor; a first temperature sensor is provided at the cooling water inlet of the electric drive heat absorption branch, and a second temperature sensor is provided at the cooling water outlet of the electric drive heat absorption branch; a third temperature sensor is provided at the cooling water inlet of the battery pack heat absorption branch, and a fourth temperature sensor is provided at the cooling water outlet of the battery pack heat absorption branch; the controller is configured to control the multi-way valve to connect the electric drive heat absorption branch to the heat exchanger when the temperatures collected by the first temperature sensor and the second temperature sensor meet the first heat absorption condition; and, to control the multi-way valve to connect the battery pack heat absorption branch to the heat exchanger when the temperatures collected by the third temperature sensor and the fourth temperature sensor meet the first heat absorption condition.

[0009] In a possible implementation, the controller is configured to: control the first valve to close when the temperatures collected by the first temperature sensor and the second temperature sensor do not meet the first heat absorption condition, and the temperatures collected by the third temperature sensor and the fourth temperature sensor do not meet the first heat absorption condition.

[0010] In a possible implementation, the controller is configured to: obtain the current temperature value of the target temperature control object and the set target temperature value; determine the current required heating capacity based on the target temperature value and the current temperature value; determine the heat absorption amount of the electric device heat absorption branch based on the temperatures collected by the first temperature sensor and the second temperature sensor, and the temperatures collected by the third temperature sensor and the fourth temperature sensor; determine the target heating capacity of the heat pump heating branch based on the heat absorption amount and the required heating capacity.

[0011] In a possible implementation, water pumps are respectively provided in the battery pack heat absorption branch and the electric drive heat absorption branch, and the water pumps are used to drive the cooling water to flow in the pipelines of the battery pack heat absorption branch and the electric drive heat absorption branch.

[0012] In a possible implementation, an evaporator and a second valve are provided on the environmental heat absorption branch, and the second valve is connected to the controller; a fifth temperature sensor is provided at the refrigerant inlet of the evaporator, and a sixth temperature sensor is provided at the refrigerant outlet of the evaporator; the controller is configured to: control the second valve to open when the temperatures collected by the fifth temperature sensor and the sixth temperature sensor meet the second heat absorption condition.

[0013] In a possible implementation, the environmental heat absorption branch is connected to the heat pump heating branch through a four-way valve.

[0014] In a second aspect, an embodiment of the present application provides a vehicle, including the heat pump heat absorption control system in the first aspect above.

[0015] The heat pump heat absorption control system and vehicle provided by the embodiments of the present application are provided with an environmental heat absorption branch, an electrical equipment heat absorption branch, a heat pump heating branch and a heat exchanger in the system. The environmental heat absorption branch is connected to the refrigerant side included in the heat exchanger through a pipeline. The environmental heat absorption branch is connected to the heat pump heating branch through a pipeline. The heat pump heating branch is connected to the refrigerant side through a pipeline. The electrical equipment heat absorption branch is connected to the cooling water side included in the heat exchanger through a pipeline. The heat exchanger conducts the heat absorbed by the cooling water side to the refrigerant side, and conducts the heat absorbed by the refrigerant in the refrigerant side to the heat absorption environmental branch and the electrical equipment heat absorption branch of the heat pump heating branch. The embodiments of the present application assist the heat pump system to absorb heat in various ways, improve the utilization rate of equipment and environmental waste heat, avoid waste of heat, and achieve the purpose of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0019] Figure 1 It is a structural diagram of a heat pump heat absorption control system provided by the embodiments of the present application;

[0020] Figure 2 It is a structural diagram of another heat pump heat absorption control system provided by the embodiments of the present application;

[0021] Figure 3 It is a structural diagram of yet another heat pump heat absorption control system provided by the embodiments of the present application;

[0022] Figure 4 It is a structural diagram of yet another heat pump heat absorption control system provided by the embodiments of the present application;

[0023] Figure 5 It is a structural diagram of yet another heat pump heat absorption control system provided by the embodiments of the present application;

[0024] Figure 6 It is a schematic structural diagram of a vehicle provided by the embodiments of the present application.

[0025] Reference Numerals:

[0026] 100 - Heat pump heat absorption control system; 101 - Ambient heat absorption branch; 1011 - Evaporator; 1012 - Second valve; 102 - Electrical equipment heat absorption branch; 1021 - Temperature sensing subsystem; 1022 - Battery pack heat absorption branch; 1023 - Electric drive heat absorption branch; 1024 - Multi - way valve; 1025 - First water pump; 1026 - Second water pump; 103 - Heat pump heating branch; 104 - Heat exchanger; 1041 - Refrigerant side; 1042 - Cooling water side; 1043 - First valve; 105 - Controller; 106 - Four - way valve; 600 - Vehicle. Detailed Embodiment

[0027] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application.

[0028] Those skilled in the art can understand that terms such as "first", "second", etc. in the embodiments of the present application are only used to distinguish different steps, devices or modules, etc., without representing any specific technical meaning and without indicating their logical order.

[0029] It should also be understood that in this embodiment, "a plurality of" may refer to two or more, and "at least one" may refer to one, two or more.

[0030] It should also be understood that for any component, data or structure mentioned in the embodiments of the present application, without clear limitation or contrary indication in the context, it can generally be understood as one or more.

[0031] In addition, the term "and / or" in the present application is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects before and after.

[0032] It should also be understood that the present application emphasizes the differences between various embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they will not be elaborated one by one.

[0033] The following description of at least one exemplary embodiment is actually merely illustrative and in no way limits the present application and its application or use.

[0034] Techniques, circuits, and devices that are known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the above-mentioned techniques, circuits, and devices should be regarded as part of the specification.

[0035] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0036] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. For the convenience of understanding the embodiments of the present application, the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0037] To solve the technical problems of low waste heat utilization rate and high energy consumption in existing heat pump systems, the present application provides a heat pump heat absorption control system, which assists the heat pump system in heat absorption in various ways, improves the utilization rate of waste heat of equipment and the environment, avoids waste of heat, and achieves the purpose of energy conservation and emission reduction.

[0038] Figure 1 This is a structural diagram of a heat pump heat absorption control system provided by an embodiment of the present application. This system can be applied to scenarios such as vehicles, ships, rooms, etc. that require temperature control of specific objects.

[0039] The system specifically includes: an environmental heat absorption branch 101, an electrical equipment heat absorption branch 102, a heat pump heating branch 103, and a heat exchanger 104.

[0040] As Figure 1 shown, the environmental heat absorption branch 101 is connected to the refrigerant side 1041 included in the heat exchanger 104 through a pipeline, and the environmental heat absorption branch 101 is connected to the heat pump heating branch 103 through a pipeline. The heat pump heating branch 103 is connected to the refrigerant side 1041 through a pipeline.

[0041] The above-mentioned environmental heat absorption branch 101 is used to absorb heat from the environment, conduct the absorbed heat into the refrigerant pipeline, and increase the temperature of the refrigerant in the heat pump heating branch 103, so as to achieve the purpose of assisting in heating. The environmental heat absorption branch 101 may include devices such as an evaporator to evaporate and absorb heat of the refrigerant in the refrigerant pipeline.

[0042] The above-mentioned heat pump heating branch 103 includes equipment such as a compressor and a condenser for adjusting the temperature of a specific space. The refrigerant pipeline in the heat pump heating branch 103 contains flowing refrigerant. After the refrigerant in the environmental heat absorption branch 101 absorbs environmental heat, it is supplied to the heat pump heating branch 103.

[0043] The heat exchanger 104 includes a refrigerant side 1041 and a cooling water side 1042, and the heat of the refrigerant side 1041 and the cooling water side 1042 can be conducted to each other. The refrigerant in the environmental heat absorption branch 101 can flow into the refrigerant side 1041, flow out from the refrigerant side 1041, and then flow into the heat pump heating branch 103.

[0044] The above-mentioned electrical equipment heat absorption branch 102 and the cooling water side 1042 included in the heat exchanger 104 are connected by a pipeline.

[0045] The electrical equipment heat absorption branch 102 may include water-cooled equipment and various electrical equipment (such as battery packs, power supplies, motors, etc.). The electrical equipment can generate heat during operation, and the water-cooled equipment uses cooling water to absorb the heat generated by various electrical equipment. As Figure 1 shown, the cooling water can be stored in a water storage device, and the cooling water circulates among the heat exchanger 104, the electrical equipment heat absorption branch 102, the water storage device, and other equipment that needs to be cooled.

[0046] The heat exchanger 104 is used to conduct the heat absorbed by the cooling water side 1042 to the refrigerant side 1041, and conduct the heat absorbed by the refrigerant in the refrigerant side 1041 to the heat pump heating branch 103.

[0047] The heat pump heat absorption control system provided by the embodiment of the present application, by setting an environmental heat absorption branch, an electrical equipment heat absorption branch, a heat pump heating branch, and a heat exchanger in the system, the environmental heat absorption branch is connected to the refrigerant side included in the heat exchanger 104 through a pipeline, the environmental heat absorption branch is connected to the heat pump heating branch through a pipeline, the heat pump heating branch is connected to the refrigerant side through a pipeline, the electrical equipment heat absorption branch is connected to the cooling water side included in the heat exchanger through a pipeline, and the heat exchanger conducts the heat absorbed by the cooling water side to the refrigerant side, and conducts the heat absorbed by the refrigerant in the refrigerant side to the heat pump heating branch, the heat absorption environment branch, and the electrical equipment heat absorption branch. The embodiment of the present application assists the heat pump system in heat absorption in multiple ways, improves the utilization rate of equipment and environmental waste heat, avoids waste of heat, and achieves the purpose of energy conservation and emission reduction.

[0048] In some optional implementation manners, as Figure 2 shown, the system further includes a controller 105, and a temperature sensing subsystem 1021 is provided on the electrical equipment heat absorption branch 102; a first valve 1043 is provided on the flow pipeline of the refrigerant side 1041, and the first valve 1043 and the temperature sensing subsystem 1021 are connected to the controller 105.

[0049] The controller 105 is configured to: control the first valve 1043 to open when the temperature collected by the temperature sensing subsystem meets the first heat absorption condition.

[0050] The temperature sensing subsystem may include at least one temperature sensor. These temperature sensors can collect the temperature on the heat absorption branch 102 of the electrical device, and send the collected temperature signal to the controller 105. The controller 105 determines whether the heat absorption branch 102 of the electrical device meets the first heat absorption condition according to the temperature signal. The first heat absorption condition is preset and is used to indicate the condition for conducting the heat absorbed by the heat absorption branch 102 of the electrical device to the heat pump heating branch 103. For example, a temperature threshold can be set. If the collected temperature is greater than the threshold, it is determined that the first heat absorption condition is met. If the collected temperature meets the first heat absorption condition, the controller 105 can control the first valve 1043 to open, so that the refrigerant side 1041 is connected to the heat pump heating branch 103, and the heat absorbed by the refrigerant side 1041 is transported to the heat pump heating branch 103. If the temperature collected by the temperature sensing subsystem does not meet the first heat absorption condition, the controller 105 can control the first valve 1043 to close, so that the refrigerant side 1041 no longer transports refrigerant substances to the heat pump heating branch 103.

[0051] The above-mentioned first valve 1043 can be set at the refrigerant outlet of the flow pipeline of the refrigerant side 1041, or can be set at the refrigerant inlet, as Figure 2 shown, the first valve 1043 is set at the refrigerant inlet of the refrigerant side 1041.

[0052] In this embodiment, by setting the first valve 1043 on the flow pipeline of the refrigerant side 1041 and setting the temperature sensing subsystem on the heat absorption branch 102 of the electrical device, it is realized to automatically judge whether the heat of the heat absorption branch 102 of the electrical device can be utilized according to the temperature of the heat absorption branch 102 of the electrical device in real time, improving the automation degree of the heat pump system control, obtaining waste heat from the electrical device in time, and improving the heat utilization rate.

[0053] In some alternative implementation manners, as Figure 3 shown, the heat absorption branch 102 of the electrical device includes a battery pack heat absorption branch 1022 and an electric drive heat absorption branch 1023, and the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023 are connected by a pipeline.

[0054] Among them, the battery pack heat absorption branch 1022 may include a battery pack and supporting equipment. When the battery pack supplies power to the outside world, it will release heat. The electric drive heat absorption branch 1023 may include motor drive equipment, power supply equipment (such as a DC-DC power supply), etc. These devices will release heat when operating.

[0055] The cooling water flowing between the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023 can conduct the absorbed heat to the refrigerant side 1041 to provide auxiliary heat for the heat pump heating branch 103.

[0056] In this embodiment, by adding the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023 to the electrical equipment heat absorption branch 102, the heat released by the battery pack and the electric drive equipment is fully absorbed, the heat is recovered more specifically, and the heat recovery efficiency is improved.

[0057] In some alternative implementation manners, as Figure 4 shown, a multi-way valve 1024 is provided between the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023, and the controller 105 is electrically connected to the multi-way valve 1024. The temperature sensing subsystem 1021 includes a first temperature sensor, a second temperature sensor, a third temperature sensor, and a fourth temperature sensor.

[0058] The multi-way valve 1024 includes a plurality of pipe interfaces, and the connection states of the respective pipe interfaces in the multi-way valve 1024 can be switched. Figure 4 The multi-way valve 1024 shown includes seven pipe interfaces.

[0059] A first temperature sensor (T1) is provided at the cooling water inlet of the electric drive heat absorption branch 1023, and a second temperature sensor (T2) is provided at the cooling water outlet of the electric drive heat absorption branch 1023; a third temperature sensor (T3) is provided at the cooling water inlet of the battery pack heat absorption branch 1022, and a fourth temperature sensor (T4) is provided at the cooling water outlet of the battery pack heat absorption branch 1022. Each temperature sensor is electrically connected to the controller 105, and the controller 105 can receive the collected temperature values from each temperature sensor.

[0060] The controller 105 is configured to control the multi-way valve 1024 to connect the electric drive heat absorption branch 1023 to the heat exchanger 104 when the temperatures collected by the first temperature sensor and the second temperature sensor meet the first heat absorption condition; and, to control the multi-way valve 1024 to connect the battery pack heat absorption branch 1022 to the heat exchanger 104 when the temperatures collected by the third temperature sensor and the fourth temperature sensor meet the first heat absorption condition.

[0061] Specifically, the first heat absorption condition may be related to the temperatures of the cooling water inlet and the cooling water outlet, that is, when the temperatures of the water inlet and the water outlet meet the first heat absorption condition, the heat in the cooling water can be conducted to the refrigerant. For example, if Figure 4If the temperature difference between the temperature collected at T2 and the temperature collected at T1 is greater than or equal to the first preset temperature threshold, and / or the temperature collected at T2 is greater than the temperature of the refrigerant side 1041, it indicates that the cooling water has absorbed more heat from the electric drive device, and it is determined that the first heat absorption condition is met at this time; similarly, if the temperature difference between the temperature collected at T4 and the temperature collected at T3 is greater than or equal to the preset temperature threshold, and / or the temperature collected at T4 is greater than the temperature of the refrigerant side 1041, it is determined that the first heat absorption condition is met.

[0062] The states of the interfaces in the multi-way valve 1024 can be controlled by the controller 105. As Figure 4 shown, when the temperatures collected at T1 and T2 meet the first heat absorption condition, the No. 2 interface and the No. 1 interface in the multi-way valve 1024 can be connected, and the No. 5 interface and the No. 4 interface can be connected, so that the cooling water in the electric drive heat absorption branch 1023 can flow into the cooling water side 1042 of the heat exchanger 104. When the temperatures collected at T1 and T2 do not meet the first heat absorption condition, the No. 2 interface and the No. 4 interface in the multi-way valve 1024 can be connected, and the No. 5 interface and the No. 3 interface can be connected, so that the cooling water in the electric drive heat absorption branch 1023 does not flow into the cooling water side 1042 of the heat exchanger 104.

[0063] In this embodiment, by setting multiple temperature sensors and judging whether the first heat absorption condition is met according to the temperatures at the inlet and outlet of the cooling water, the reference data for judging the first heat absorption condition is more abundant, and the control accuracy of heat recovery is improved.

[0064] In some optional implementation manners, the controller 105 is configured to: when the temperatures collected by the first temperature sensor and the second temperature sensor do not meet the first heat absorption condition, and the temperatures collected by the third temperature sensor and the fourth temperature sensor do not meet the first heat absorption condition, control the first valve 1043 to close.

[0065] When neither of the two heat absorption branches meets the first heat absorption condition, the first valve 1043 can be closed at this time, and the refrigerant on the refrigerant side 1041 no longer flows into the heat pump heating branch 103, so as to stop the heat exchange function of the heat exchanger 104 and avoid the influence of the cooling water temperature on the heat pump heating branch 103.

[0066] In some optional implementation manners, the controller 105 may perform the following steps:

[0067] Step 1, obtain the current temperature value of the target temperature control object and the set target temperature value.

[0068] Step 2, determine the current required heating capacity based on the target temperature value and the current temperature value.

[0069] Among them, the target temperature control object is the object whose temperature is adjusted by this system, such as the interior space of a vehicle. The required heating capacity can be determined according to the temperature difference between the target temperature value and the current temperature value. For example, a correspondence table between the heating capacity and the temperature difference can be set in advance, and according to this correspondence table, the current required heating capacity can be determined.

[0070] Step 3: Based on the temperatures collected by the first temperature sensor and the second temperature sensor, and the temperatures collected by the third temperature sensor and the fourth temperature sensor, determine the heat absorption of the electrical equipment heat absorption branch 102.

[0071] Specifically, a correspondence between the temperature difference between the inlet and outlet of the cooling water and the heat absorption of the cooling water can be set in advance. According to this correspondence, the heat absorption corresponding to the temperature difference collected by the first temperature sensor and the second temperature sensor, and the heat absorption corresponding to the temperature difference collected by the third temperature sensor and the fourth temperature sensor can be determined.

[0072] Step 4: Based on the heat absorption and the required heating capacity, determine the target heating capacity of the heat pump heating branch 103.

[0073] Specifically, since the heat pump heating branch 103 usually operates simultaneously with the ambient heat absorption branch 101, the required heating capacity can be subtracted by the above heat absorption to obtain the target heating capacity of the heat pump heating branch 103. According to the target heating capacity, the power of the compressor included in the heat pump system can be adjusted. This power is smaller than the power required to not absorb heat from the electrical equipment. Therefore, the effect of saving the energy consumed by the heat pump system can be achieved.

[0074] In some optional implementation manners, as Figure 4 shown, water pumps (including the first water pump 1025 and the second water pump 1026) are respectively arranged in the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023. The water pumps are used to drive the cooling water to flow in the pipelines of the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023.

[0075] The above water pumps can be connected to the controller 105, and the controller 105 can send control signals to the water pumps to control the operation or stop of the water pumps.

[0076] In this embodiment, by arranging water pumps in the battery pack heat absorption branch 1022 and the electric drive heat absorption branch 1023, the cooling water circulation therein can be flexibly controlled, and the degree of automatic control of the heat pump system can be improved.

[0077] In some optional implementation manners, as Figure 5As shown in the figure, an evaporator 1011 and a second valve 1012 are provided on the environmental heat absorption branch 101, and the second valve 1012 is connected to the controller 105; a fifth temperature sensor (T5) is provided on the refrigerant inflow pipe of the evaporator 1011, and a sixth temperature sensor (T6) is provided on the refrigerant outflow pipe of the evaporator 1011. Both the fifth temperature sensor and the sixth temperature sensor are electrically connected to the controller 105 and send the collected temperature signals to the controller 105.

[0078] The controller 105 is configured to: control the second valve 1012 to open when the temperatures collected by the fifth temperature sensor and the sixth temperature sensor meet the second heat absorption condition.

[0079] The above-mentioned second heat absorption condition may be related to the refrigerant inflow temperature and the refrigerant outflow temperature of the evaporator 1011, that is, when the refrigerant inflow temperature and the refrigerant outflow temperature meet the second heat absorption condition, the refrigerant heated by the evaporator 1011 can flow into the heat pump heating branch 103. For example, if Figure 5 the difference between the temperature collected by T6 and the temperature collected by T5 is greater than or equal to the second preset temperature threshold, and / or the temperature collected by T6 is greater than the refrigerant outlet temperature of the compressor, it means that the evaporator 1011 absorbs more heat from the environment, and it is determined that the second heat absorption condition is met at this time. Further, generally, when the outside air temperature is too low, the second heat absorption condition may not be met, and at this time, the second valve 1012 can be controlled to close, and the refrigerant in the environmental heat absorption branch 101 no longer flows into the heat pump heating branch 103.

[0080] In this embodiment, by setting the second valve 1012 and the temperature sensor in the environmental heat absorption branch 101, it is realized to control whether the environmental heat absorption branch 101 assists in heating the heat pump heating branch 103 according to the temperature of the environmental heat absorption branch 101, so that the control of the environmental heat absorption branch 101 adapts to the actual environment, improves the automation degree of the heat pump system control, and timely controls the connection or disconnection of the environmental heat absorption branch 101 from the heat pump heating branch 103, thereby improving the temperature control efficiency and reducing the energy consumption.

[0081] In some alternative implementation manners, as Figure 5 shown in the figure, the environmental heat absorption branch 101 is connected to the heat pump heating branch 103 through a four-way valve 106.

[0082] The controller 105 can control the connection state of the four-way valve, so as to more flexibly control the flow direction of the refrigerant and improve the automation control degree of the system.

[0083] Figure 6FIG. 0 is a schematic structural diagram of a vehicle 600 provided by an embodiment of the present application. The vehicle 600 includes the above-mentioned heat pump heat absorption control system 100. The heat pump heat absorption control system 100 can adjust the temperature of the interior space of the vehicle. By applying the heat pump heat absorption control system to the vehicle, the heat released by the electrical devices on the vehicle can be recovered, and the ambient heat can be absorbed from the external environment of the vehicle, thereby reducing the energy consumed by vehicle thermal management.

[0084] Those skilled in the art should also be able to further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different circuits to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0085] The steps of the circuits or algorithms described in combination with the embodiments disclosed herein can be implemented by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium well-known in the technical field.

[0086] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "including", "comprising", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The steps, processes, and operations described herein are not to be construed as necessarily requiring them to be executed in the specific order described or illustrated, unless the order of execution is explicitly stated. It should also be understood that additional or alternative steps can be used.

[0087] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A heat pump heat absorption control system, characterized in that: The system comprises: an environment heat absorption branch, an electric equipment heat absorption branch, a heat pump heating branch and a heat exchanger; The environmental heat absorption branch is connected to the refrigerant side of the heat exchanger through a pipeline, and the environmental heat absorption branch is connected to the heat pump heating branch through a pipeline; The heat pump heating branch is connected to the refrigerant side through a pipeline; The electrical equipment heat absorption branch is connected to the cooling water side of the heat exchanger through a pipeline; The heat exchanger is used to transfer the heat absorbed by the cooling water side to the refrigerant side, and transfer the heat absorbed by the refrigerant in the refrigerant side to the heat pump heating branch.

2. The system according to claim 1, characterized in that The system further includes a controller, and a temperature sensing subsystem is provided on the heat absorption branch of the electrical equipment; a first valve is provided on the circulation pipeline on the refrigerant side, and the first valve and the temperature sensing subsystem are connected to the controller; The controller is used to control the first valve to open when the temperature collected by the temperature sensing subsystem meets the first heat absorption condition.

3. The system according to claim 2, characterized in that The electrical equipment heat absorption branch includes a battery pack heat absorption branch and an electric drive heat absorption branch, and the battery pack heat absorption branch and the electric drive heat absorption branch are connected through a pipeline.

4. The system according to claim 3, characterized in that A multi-way valve is provided between the battery pack heat absorption branch and the electric drive heat absorption branch, and the controller is electrically connected to the multi-way valve; the temperature sensing subsystem includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor; The first temperature sensor is provided at the cooling water inlet of the electric drive heat absorption branch, and the second temperature sensor is provided at the cooling water outlet of the electric drive heat absorption branch; The third temperature sensor is provided at the cooling water inlet of the heat absorption branch of the battery pack, and the fourth temperature sensor is provided at the cooling water outlet of the heat absorption branch of the battery pack; The controller is used to control the multi-way valve to connect the electric drive heat absorption branch with the heat exchanger when the temperatures collected by the first temperature sensor and the second temperature sensor meet the first heat absorption condition; and to control the multi-way valve to connect the battery pack heat absorption branch with the heat exchanger when the temperatures collected by the third temperature sensor and the fourth temperature sensor meet the first heat absorption condition.

5. The system according to claim 4, characterized in that The controller is used to control the first valve to close when the temperatures collected by the first temperature sensor and the second temperature sensor do not meet the first heat absorption condition, and the temperatures collected by the third temperature sensor and the fourth temperature sensor do not meet the first heat absorption condition.

6. The system according to claim 4, characterized in that The controller is used to: Get the current temperature value of the target temperature control object and the set target temperature value; Determine the current required heating value based on the target temperature value and the current temperature value; Determine the amount of heat absorbed by the heat absorption branch of the electrical device based on the temperatures collected by the first temperature sensor and the second temperature sensor, and the temperatures collected by the third temperature sensor and the fourth temperature sensor; Based on the heat absorption and the required heating amount, a target heating amount of the heat pump heating branch is determined.

7. The system according to claim 3, characterized in that The battery pack heat absorption branch and the electric drive heat absorption branch are respectively provided with water pumps, and the water pumps are used to drive the cooling water to flow in the pipes of the battery pack heat absorption branch and the electric drive heat absorption branch.

8. The system according to claim 2, characterized in that The environmental heat absorption branch is provided with an evaporator and a second valve, and the second valve is connected to the controller; a fifth temperature sensor is provided at the refrigerant inlet of the evaporator, and a sixth temperature sensor is provided at the refrigerant outlet of the evaporator; The controller is used to control the second valve to open when the temperatures collected by the fifth temperature sensor and the sixth temperature sensor meet the second heat absorption condition.

9. The system according to any one of claims 1 to 8, characterized in that: The environmental heat absorption branch is connected to the heat pump heating branch through a four-way valve.

10. A vehicle comprising the heat pump heat absorption control system according to any one of claims 1 to 9.

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