Heat pump air conditioner of electric vehicle, heat pump air conditioner control method, device and vehicle

Abstract

A heat pump air conditioner of an electric vehicle, a heat pump air conditioner control method, device and vehicle, the heat pump air conditioner comprising a refrigeration system, a heat pump system and a hot gas bypass system, the refrigeration system comprising a compressor (100), a first condenser (101), an evaporator (102) and a first expansion valve (103); the inlet of the evaporator (102) is connected with the outlet of the first condenser (101) through the first expansion valve (103), the outlet of the evaporator (102) is connected with the suction port of the compressor (100), and the inlet of the first condenser (101) is connected with the exhaust port of the compressor (100); the heat pump system comprises a battery cooler (104), a second expansion valve (105) and a gas supercharging device (200); the inlet of the battery cooler (104) is connected with the outlet of the first condenser (101) through the second expansion valve (105), the outlet of the battery cooler (104) is connected with the gas inlet of the gas supercharging device (200), and the gas outlet of the gas supercharging device (200) is connected with the suction port of the compressor (100); the hot gas bypass system comprises a third expansion valve (106), the first end of the third expansion valve (106) is connected with the exhaust port of the compressor (100), and the second end of the third expansion valve (106) is connected with the suction port of the compressor (100). The heat pump air conditioner can simultaneously perform heating through the heat pump system and the hot gas bypass system, and the heating effect of the heat pump air conditioner is effectively improved.

Description

Technical Field

[0001] This application relates to the field of electric vehicle air conditioning technology, and more specifically, to a heat pump air conditioner, heat pump air conditioner control method, device and vehicle for electric vehicles. Background Technology

[0002] With the rapid development of the electric vehicle industry, the supporting air conditioning systems for electric vehicles have also received widespread attention. The driving range of an electric vehicle is related to its battery capacity. If the air conditioning system uses a traditional combination of cooling and PTC (Power Transmission Control) technology, it will consume a large amount of energy when heating in winter, significantly shortening the driving range. Heat pump air conditioning, due to its high energy efficiency, compact structure, and superior comfort, has been widely used in electric vehicles.

[0003] Currently, in order to improve the heating efficiency of heat pump air conditioners, a hot gas bypass system has been developed based on the air conditioner heat pump system. This system can directly guide the high-temperature and high-pressure refrigerant gas from the compressor outlet back to the compressor inlet or the battery cooler (Chiller) inlet through the expansion valve to achieve the function of auxiliary heating.

[0004] However, for a hot gas bypass system to achieve a good heating effect, the compressor's low-pressure suction port needs to be kept at a high pressure level, which contradicts the operating conditions of a heat pump system. Therefore, hot gas bypass systems usually cannot work simultaneously with heat pump systems, resulting in limited applications and the inability to achieve maximum heating capacity. Summary of the Invention

[0005] This application provides a heat pump air conditioner for electric vehicles, a heat pump air conditioner control method, an apparatus, and a vehicle. By setting up a gas pressurization device, it can solve the problem that the existing heat pump air conditioner cannot operate in the hot gas bypass mode and the heat pump mode simultaneously, resulting in the inability to optimize the air conditioning heating effect.

[0006] In one aspect, a heat pump air conditioner for an electric vehicle is provided, including a refrigeration system, a heat pump system, and a hot gas bypass system;

[0007] The refrigeration system includes a compressor, a first condenser, an evaporator, and a first expansion valve;

[0008] The inlet of the evaporator is connected to the outlet of the first condenser through the first expansion valve, the outlet of the evaporator is connected to the suction port of the compressor, and the inlet of the first condenser is connected to the discharge port of the compressor.

[0009] The heat pump system includes a battery cooler, a second expansion valve, and a gas pressurization device;

[0010] The inlet of the battery cooler is connected to the outlet of the first condenser through the second expansion valve, the outlet of the battery cooler is connected to the inlet of the gas booster, and the exhaust port of the gas booster is connected to the suction port of the compressor.

[0011] The hot gas bypass system includes: a third expansion valve;

[0012] The first end of the third expansion valve is connected to the compressor's exhaust port, and the second end of the third expansion valve is connected to the compressor's intake port.

[0013] The technical solution of this application provides a heat pump air conditioner for electric vehicles. By setting a gas pressurization device between the battery cooler outlet and the compressor intake, the gas output from the battery cooler can be pressurized by the gas pressurization device before being input into the compressor intake, i.e., the low-pressure side of the compressor, when the heat pump air conditioner is operating in heat pump mode. This increases the pressure on the low-pressure side of the compressor, making it comparable to the pressure required for hot gas bypass mode operation. This allows the heat pump air conditioner to further activate the hot gas bypass mode when operating in heat pump mode, achieving simultaneous operation of heat pump mode and hot gas bypass mode. The simultaneous operation of the two modes allows the heat pump air conditioner to heat through both the heat pump system and the hot gas bypass system, thereby effectively improving the heating effect of the heat pump air conditioner.

[0014] As one possible implementation, heat pump air conditioning also includes: a gas-liquid separator;

[0015] The outlet of the gas-liquid separator is connected to the suction port of the compressor;

[0016] The exhaust port of the gas booster is connected to the intake port of the compressor, including:

[0017] The exhaust port of the gas booster is connected to the inlet of the gas-liquid separator, and the gas-liquid separator is connected to the suction port of the compressor.

[0018] The evaporator outlet is connected to the compressor suction port, including:

[0019] The outlet of the evaporator is connected to the inlet of the gas-liquid separator, and the gas-liquid separator is connected to the suction port of the compressor.

[0020] The second end of the third expansion valve is connected to the compressor's suction port, including:

[0021] The second end of the third expansion valve is connected to the inlet of the gas-liquid separator, and then connected to the suction port of the compressor through the gas-liquid separator.

[0022] The technical solution of this implementation method connects the evaporator to the gas-liquid separator, so that the gas discharged from the evaporator passes through the gas-liquid separator for gas-liquid separation before entering the compressor, separating the liquid from the gas. Only the gas obtained after gas-liquid separation is input into the compressor, thus preventing liquid from entering the compressor. Similarly, by connecting the gas booster to the gas-liquid separator, the gas discharged from the gas booster passes through the gas-liquid separator for gas-liquid separation before entering the compressor, separating the liquid from the gas. Only the gas obtained after gas-liquid separation is input into the compressor, thus preventing liquid from entering the compressor. Finally, by connecting the third expansion valve to the gas-liquid separator, the gas output from the third expansion valve passes through the gas-liquid separator for gas-liquid separation before entering the compressor, separating the liquid from the gas. Only the gas obtained after gas-liquid separation is input into the compressor, thus preventing liquid from entering the compressor.

[0023] As one possible implementation, a heat pump air conditioner also includes: a second condenser, a first proportional valve, and a second proportional valve;

[0024] The second condenser is located in the passenger compartment of the electric vehicle;

[0025] The inlet of the second condenser is connected to the exhaust port of the compressor through the second proportional valve, the outlet of the second condenser is connected to the inlet of the battery cooler through the second expansion valve, and the outlet of the second condenser is also connected to the inlet of the evaporator through the first expansion valve.

[0026] The inlet of the first condenser is connected to the outlet of the compressor, including:

[0027] The inlet of the first condenser is connected to the exhaust port of the compressor via a first proportional valve.

[0028] This technical solution utilizes a second condenser installed in the passenger compartment. The high-temperature, high-pressure gaseous refrigerant output from the compressor is fed into this condenser, where it condenses and releases heat, directly heating the passenger compartment. This means that heat absorbed from the environment by the heat pump system, recovered from waste heat, and generated by the hot gas bypass system are transferred to the passenger compartment via the second condenser, thus improving the user experience. Furthermore, if the electric vehicle's battery system requires heating, some heat can be transferred to the battery system via the first condenser by adjusting the openings of the first and second proportional valves. Both heat distribution and proportional valve adjustment are achieved through a dedicated control system.

[0029] As one possible implementation, an electric vehicle includes: a radiator and a cooling fan;

[0030] Battery coolers are used to absorb heat from the environment through radiators and cooling fans.

[0031] As one possible implementation, electric vehicles include: a battery system and an electric drive system;

[0032] Battery coolers are used to absorb heat from battery systems and electric drive systems.

[0033] In a second aspect, embodiments of this application provide a control method for a heat pump air conditioner, used to control the heat pump air conditioner of an electric vehicle according to the first aspect, the method comprising:

[0034] When a heat pump air conditioner is in heat pump mode and is operating for heating, the control gas pressurization device pressurizes the gas output from the battery cooler and inputs the pressurized gas into the compressor's suction port so that the pressure on the compressor's suction port side meets the operating conditions of the hot gas bypass mode.

[0035] When the pressure at the compressor suction port meets the operating conditions for hot gas bypass mode, the hot gas bypass mode of the heat pump air conditioner is activated.

[0036] The technical solution of this application provides a control method for controlling a heat pump air conditioner in the first aspect. When the heat pump air conditioner is running in heat pump mode, the gas output from the battery cooler is pressurized by a gas pressurizing device and then input into the compressor suction port, thereby increasing the pressure on the low-pressure side of the compressor. This increases the pressure on the low-pressure side of the compressor to a level comparable to the pressure required for the operation of the hot gas bypass system, thereby enabling the hot gas bypass mode to be further activated. This allows the heat pump mode and the hot gas bypass mode to operate simultaneously. When both modes are running, the heat pump air conditioner can simultaneously heat through the heat pump system and the hot gas bypass system, thereby effectively improving the heating effect of the heat pump air conditioner.

[0037] As one possible implementation, before activating the hot air bypass mode of the heat pump air conditioner, the method also includes:

[0038] Determine whether the heat absorbed by the battery cooler meets the heating requirements;

[0039] Activating the hot air bypass mode of the heat pump air conditioner includes:

[0040] If it is determined that the heat absorbed by the battery cooler is insufficient to meet the heating demand, the heat pump air conditioner's hot air bypass mode is activated.

[0041] This technical solution determines whether to activate the hot gas bypass mode by assessing whether the heating capacity of the heat pump mode meets the heating demand. This allows for various combinations of hot gas bypass and heat pump modes, thus broadening the application temperature range of air conditioning heating and eliminating concerns about insufficient heat pump heating capacity even at extremely low ambient temperatures. Furthermore, because the heat pump mode has high heating efficiency, it prioritizes heat absorption from various heat sources. When the heat pump mode's heating capacity is insufficient, the hot gas bypass mode is introduced to assist heating, achieving high heating efficiency while ensuring the heating effect of the heat pump air conditioner.

[0042] As one possible implementation, electric vehicles include radiators and cooling fans. Determining whether the heat absorbed by the battery cooler meets the heating requirements includes:

[0043] Determine whether the heat absorbed by the battery cooler from the environment through the radiator and cooling fan meets the heating requirements;

[0044] If it is determined that the heat absorbed by the battery cooler from the environment through the radiator and cooling fan is insufficient to meet the heating requirements, then the heat absorbed by the battery cooler is insufficient to meet the heating requirements.

[0045] As one possible implementation, electric vehicles include a battery system and an electric drive system. Determining whether the heat absorbed by the battery cooler meets the heating requirements includes:

[0046] Determine whether the battery cooler can absorb heat from the battery system and the electric drive system, and / or determine whether the heat absorbed by the battery cooler from the battery system and the electric drive system meets the heating requirements.

[0047] If it is determined that the battery cooler cannot absorb heat from the battery system and the electric drive system, or if it is determined that the heat absorbed by the battery cooler from the battery system and the electric drive system is insufficient to meet the heating requirements, then the heat absorbed by the battery cooler is insufficient to meet the heating requirements.

[0048] Thirdly, embodiments of this application provide a control device for a heat pump air conditioner, used to control the heat pump air conditioner of the first aspect, the device comprising:

[0049] The pressure regulating unit is used to control the gas booster device to boost the gas output from the battery cooler when the heat pump air conditioner is in heating mode, and to input the boosted gas into the compressor suction port so that the pressure on the compressor suction port side meets the operating conditions of the hot gas bypass mode.

[0050] The hot gas bypass mode activation unit is used to activate the hot gas bypass mode of the heat pump air conditioner when the pressure on the compressor suction port side meets the operating conditions of the hot gas bypass mode.

[0051] Fourthly, embodiments of this application provide a vehicle including a heat pump air conditioner for an electric vehicle as described in the first aspect.

[0052] Fifthly, embodiments of this application provide a control device for a heat pump air conditioner, wherein the device includes: a processor and a memory storing computer program instructions;

[0053] When the processor executes computer program instructions, it implements a control method for heat pump air conditioning as described in the second aspect.

[0054] In a sixth aspect, embodiments of this application provide a computer-readable storage medium, wherein computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed by a processor, the control method of the heat pump air conditioner of the second aspect is implemented. Attached Figure Description

[0055] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0056] Figure 1 This is a structural schematic diagram of a conventional heat pump air conditioner for electric vehicles provided in this application;

[0057] Figure 2 This is a schematic diagram of the structure of a heat pump air conditioner for an electric vehicle provided in Embodiment 1 of this application;

[0058] Figure 3 This is a schematic diagram of the structure of a heat pump air conditioner for an electric vehicle provided in Embodiment 2 of this application;

[0059] Figure 4 This is a schematic diagram of the structure of a heat pump air conditioner for an electric vehicle provided in Embodiment 3 of this application;

[0060] Figure 5 This is a structural schematic diagram of an application scenario of a heat pump air conditioner provided in an embodiment of this application;

[0061] Figure 6 This is a structural schematic diagram of another application scenario of a heat pump air conditioner provided in this application embodiment;

[0062] Figure 7 This is a structural schematic diagram of another application scenario of a heat pump air conditioner provided in the embodiments of this application;

[0063] Figure 8 This is a structural schematic diagram of another application scenario of a heat pump air conditioner provided in the embodiments of this application;

[0064] Figure 9 This is a schematic flowchart of another heat pump air conditioner control method provided in an embodiment of this application;

[0065] Figure 10 This is a schematic diagram of the structure of a control device for a heat pump air conditioner provided in an embodiment of this application;

[0066] Figure 11 This is a schematic diagram of the structure of a control device for a heat pump air conditioner provided in an embodiment of this application. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0068] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0069] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0072] In this application, "multiple" means two or more (including two).

[0073] See Figure 1 This is a schematic diagram of a conventional heat pump air conditioner for electric vehicles provided in an embodiment of this application, as shown below. Figure 1 As shown, a heat pump air conditioner includes a refrigeration system, a heat pump system, and a hot gas bypass system.

[0074] The refrigeration system includes a compressor 100, a first condenser 101, an evaporator 102, and a first expansion valve 103. The inlet of the evaporator 102 is connected to the outlet of the first condenser 101 via the first expansion valve 103. The outlet of the evaporator 102 is connected to the suction port of the compressor 100, and the inlet of the first condenser 101 is connected to the discharge port of the compressor 100. The diagram uses a water-cooled condenser (WCC) as the first condenser 101 and an evaporative cooling control system (EVAP) as an example.

[0075] The heat pump system includes a battery cooler 104 and a second expansion valve 105. The inlet of the battery cooler 104 is connected to the outlet of the first condenser 101 through the second expansion valve 105, and the outlet of the battery cooler 104 is connected to the suction port of the compressor 100.

[0076] The hot gas bypass system includes a third expansion valve 106. The first end of the third expansion valve 106 is connected to the exhaust port of the compressor 100, and the second end of the third expansion valve 106 is connected to the suction port of the compressor 100. The third expansion valve 106 has two ends. The first end can be either of the two ends, and the second end is the other end besides the first end.

[0077] When a heat pump air conditioner is in heating mode, there are two main operating modes: hot gas bypass mode and heat pump mode.

[0078] In the hot gas bypass mode, the high-temperature, high-pressure gaseous refrigerant from compressor 100 releases heat through the first condenser 101, then returns to the compressor 100's suction port via the first expansion valve 103 and evaporator 102. Simultaneously, a portion of the refrigerant returns directly to the compressor 100's suction port via the third expansion valve 106. In practical applications, the gases output from evaporator 102 and the third expansion valve 106 can be mixed via a gas-liquid separator or a three-way valve before being input into the compressor 100's suction port. In this mode, heating is achieved by converting the compressor's power consumption into heat, requiring both the compressor's intake and exhaust pressures to increase power consumption.

[0079] In heat pump mode, the high-temperature, high-pressure gaseous refrigerant from compressor 100 releases heat through the first condenser 101 and then enters the battery cooler 104 through the second expansion valve 105. In the battery cooler 104, it absorbs heat from the environment before returning to the compressor 100's suction port. In this mode, heating is primarily achieved by absorbing heat from the environment. To achieve heat absorption from the low-temperature environment, the outlet pressure of the battery cooler 104 needs to be maintained at a relatively low level.

[0080] Therefore, in order to achieve a better heating effect in the hot gas bypass mode, the compressor's low-pressure end suction port needs to maintain a high pressure level. This contradicts the operating conditions of the heat pump mode, which means that the hot gas bypass mode and the heat pump mode cannot operate together, thus limiting their application and preventing them from achieving the maximum heating capacity.

[0081] Therefore, this application provides a heat pump air conditioner for electric vehicles, which addresses the problem that existing heat pump air conditioners cannot operate in both hot gas bypass mode and heat pump mode simultaneously, resulting in suboptimal heating performance. In the heat pump air conditioner provided in this application, the pressure on the low-pressure side of the compressor is adjustable. Based on this, during heat pump system operation, by adjusting the pressure range on the low-pressure side of the compressor, the pressure on the low-pressure side can be made to reach a level comparable to that required for the hot gas bypass system to operate, thereby preventing the hot gas bypass mode and heat pump mode from operating simultaneously.

[0082] See Figure 2 This is a schematic diagram of the structure of a heat pump air conditioner for an electric vehicle provided in Embodiment 1 of this application, as shown below. Figure 2 As shown, the heat pump air conditioner provided in this application embodiment may include:

[0083] Refrigeration system, heat pump system and hot gas bypass system.

[0084] The refrigeration system includes a compressor 100, a first condenser 101, an evaporator 102, and a first expansion valve 103. The inlet of the evaporator 102 is connected to the outlet of the first condenser 101 via the first expansion valve 103. The outlet of the evaporator 102 is connected to the suction port of the compressor 100, and the inlet of the first condenser 101 is connected to the discharge port of the compressor 100. In practical applications in electric vehicles, the evaporator 102 can be installed in the passenger compartment as an indoor evaporator.

[0085] The heat pump system includes a battery cooler 104, a second expansion valve 105, and a gas booster device 200. The inlet of the battery cooler 104 is connected to the outlet of the first condenser 101 via the second expansion valve 105. The outlet of the battery cooler 104 is connected to the inlet of the gas booster device 200, and the exhaust port of the gas booster device 200 is connected to the suction port of the compressor 100. The hot gas bypass system includes a third expansion valve 106. The first end of the third expansion valve 106 is connected to the exhaust port of the compressor 100, and the second end of the third expansion valve 106 is connected to the suction port of the compressor 100. The third expansion valve 106 has two ends; the first end can be either of the two ends, and the second end is the other end besides the first end.

[0086] The gas booster device 200 can be any device with an air inlet and an air outlet, capable of boosting the gas input through the air inlet.

[0087] In one implementation, the gas booster device 200 may include a gas booster pump. The outlet of the battery cooler 104 is connected to the inlet of the gas booster device 200, and the exhaust port of the gas booster device 200 is connected to the suction port of the compressor 100. Alternatively, the outlet of the battery cooler 104 may be connected to the inlet of the gas booster pump, and the exhaust port of the gas booster pump may be connected to the suction port of the compressor 100. Using a gas booster pump to pressurize gas offers advantages such as easy adjustment, high output flow and pressure, high cost-effectiveness, and simple operation and maintenance.

[0088] In one example, the gas booster pump may include a booster cylinder, a pressurizing piston, and a piston drive device. The booster cylinder is provided with a booster inlet and a booster outlet, wherein the booster inlet serves as the gas inlet of the gas booster pump, and the booster outlet serves as the gas exhaust outlet of the gas booster pump. The pressurizing piston is disposed inside the booster cylinder, and the piston drive device is used to drive the pressurizing piston to reciprocate within the booster cylinder, thereby boosting the gas input into the booster cylinder through the booster inlet. The boosted gas is then discharged through the booster outlet. It should be noted that the above-described structure of the gas booster pump is merely an example. In addition to the gas booster pump with the structure described above, this embodiment can also employ gas booster pumps with any other structure, which will not be listed here.

[0089] In one implementation, the first condenser 101 can be a water-cooled condenser.

[0090] This application provides a heat pump air conditioner that, by setting a gas pressurization device between the battery cooler outlet and the compressor intake, allows the gas output from the battery cooler to be pressurized by the gas pressurization device before being input into the compressor intake, i.e., the low-pressure side of the compressor, when the heat pump air conditioner is operating in heat pump mode. This increases the pressure on the low-pressure side of the compressor, making it comparable to the pressure required for operation in hot gas bypass mode. Consequently, when the heat pump air conditioner is operating in heat pump mode, it can further activate the hot gas bypass mode, achieving simultaneous operation of heat pump mode and hot gas bypass mode. The simultaneous operation of the two modes allows the heat pump air conditioner to heat through both the heat pump system and the hot gas bypass system, thereby effectively improving the heating effect of the heat pump air conditioner.

[0091] See Figure 3 This is a schematic diagram of the structure of a heat pump air conditioner for an electric vehicle provided in Embodiment 2 of this application. The main difference between the heat pump system provided in this embodiment and the heat pump system provided in Embodiment 1 is that the heat pump air conditioner system provided in this embodiment also includes a gas-liquid separator 300.

[0092] The outlet of the gas-liquid separator 300 is connected to the suction port of the compressor 100.

[0093] The exhaust port of the gas booster 200 is connected to the inlet of the gas-liquid separator 300, thereby connecting the gas-liquid separator 300 to the suction port of the compressor 100.

[0094] The outlet of the evaporator 102 is connected to the inlet of the gas-liquid separator 300, thereby connecting the gas-liquid separator 300 to the suction port of the compressor 100.

[0095] The second end of the third expansion valve 106 is connected to the inlet of the gas-liquid separator 300, thereby connecting to the suction port of the compressor 100 through the gas-liquid separator 300.

[0096] The heat pump air conditioning system provided in this embodiment connects the evaporator to the gas-liquid separator, so that the gas discharged from the evaporator passes through the gas-liquid separator for gas-liquid separation before entering the compressor, separating the liquid from the gas. Only the gas obtained after gas-liquid separation is input into the compressor, thus preventing liquid from entering the compressor. Similarly, by connecting the gas booster to the gas-liquid separator, the gas discharged from the gas booster passes through the gas-liquid separator for gas-liquid separation before entering the compressor, separating the liquid from the gas. Only the gas obtained after gas-liquid separation is input into the compressor, thus preventing liquid from entering the compressor. Finally, by connecting the third expansion valve to the gas-liquid separator, the gas output from the third expansion valve passes through the gas-liquid separator for gas-liquid separation before entering the compressor, separating the liquid from the gas. Only the gas obtained after gas-liquid separation is input into the compressor, thus preventing liquid from entering the compressor.

[0097] See Figure 4 This is a schematic diagram of the structure of a heat pump air conditioner for an electric vehicle provided in Embodiment 3 of this application. The main difference between the heat pump air conditioner provided in this embodiment and the heat pump air conditioner provided in Embodiment 2 is that the heat pump air conditioner provided in this embodiment also includes: a second condenser 400, a first proportional valve 401 and a second proportional valve 402.

[0098] In this embodiment, when the heat pump air conditioner is actually applied to an electric vehicle, the second condenser 400 is an indoor condenser CABIN COND installed in the passenger compartment of the vehicle.

[0099] The inlet of the second condenser 400 is connected to the exhaust port of the compressor 100 through the second proportional valve 402, the outlet of the second condenser 400 is connected to the inlet of the battery cooler 104 through the second expansion valve 105, and the outlet of the second condenser 400 is also connected to the inlet of the evaporator 102 through the first expansion valve 103.

[0100] The inlet of the first condenser 101 is connected to the outlet of the compressor 100 through the first proportional valve 401.

[0101] The heat pump air conditioner provided in this embodiment, by installing a second condenser in the passenger compartment, allows the high-temperature, high-pressure gaseous refrigerant output from the compressor to be input into the second condenser. The second condenser condenses the gaseous refrigerant, releasing heat, thus directly heating the passenger compartment. In other words, heat absorbed from the environment by the heat pump system, heat recovered from waste heat, and heat generated by the hot gas bypass system can be transferred to the passenger compartment through the second condenser, thereby improving the user experience. Simultaneously, if the electric vehicle's battery system requires heating, some heat can be transferred to the battery system via the first condenser by adjusting the opening of the first and second proportional valves. Both heat distribution and proportional valve adjustment are achieved using a dedicated control system.

[0102] In one implementation, the gas booster device 200 in any of the above embodiments may include a gas booster pump. When the gas booster device 200 includes the aforementioned gas booster pump, the outlet of the battery cooler 104 is connected to the inlet of the gas booster device 200, and the exhaust port of the gas booster device 200 is connected to the suction port of the compressor 100, comprising: the outlet of the battery cooler 104 being connected to the inlet of the gas booster pump, and the exhaust port of the gas booster pump being connected to the suction port of the compressor 100.

[0103] The gas booster pump may include a booster cylinder, a pressurizing piston, and a piston drive device. The booster cylinder is provided with a booster inlet and a booster outlet. The booster inlet serves as the air inlet of the gas booster pump, and the booster outlet serves as the air outlet of the gas booster pump. The pressurizing piston is located inside the booster cylinder, and the piston drive device is used to drive the pressurizing piston to reciprocate within the booster cylinder, thereby boosting the gas input into the booster cylinder through the booster inlet. The boosted gas can be discharged through the booster outlet.

[0104] Using a gas booster pump for gas pressurization has advantages such as easy adjustment, large output flow and pressure, high cost performance, and simple operation and maintenance.

[0105] The heat pump air conditioning system provided in any of the above embodiments of this application can be applied to electric vehicles.

[0106] The following is based on Figure 3 Taking the heat pump air conditioning system shown as an example, combined with Figure 5 and Figure 6 The application scenarios shown illustrate the heating principle of heat pump air conditioners.

[0107] See Figure 5 This is a schematic diagram of a heat pump air conditioning application scenario provided in an embodiment of this application, as shown below. Figure 5 As shown, a heat pump air conditioner is used in an electric vehicle, which includes a radiator 500 and a cooling fan 501.

[0108] based on Figure 5 In the application scenario shown, when the heat pump air conditioner is in heating mode, it first operates in heat pump mode. That is, the high-temperature and high-pressure gaseous refrigerant of the compressor 100 releases heat through the first condenser 101 and then enters the battery cooler 104 through the second expansion valve 105. In the battery cooler 104, the refrigerant absorbs heat from the environment through the radiator 500 and the cooling fan 501. After being pressurized by the gas pressurization device 200, the refrigerant pressure returning to the gas-liquid separator 300 is close to the pressure required for the hot gas bypass mode. Then, the hot gas bypass mode is activated, so that the hot gas bypass mode and the heat pump mode operate together.

[0109] The coefficient of performance (COP) of the heat pump mode is much greater than 1, and the COP of the hot gas bypass mode is close to 1. This combination mode can significantly improve the overall energy efficiency of the heat pump air conditioner. At the same time, it can also adjust the energy ratio of the hot gas bypass mode in real time according to changes in ambient temperature, so as to achieve more intelligent and efficient energy distribution.

[0110] See Figure 6 This is a schematic diagram illustrating another heat pump air conditioning application scenario provided in an embodiment of this application, as shown below. Figure 6 As shown, a heat pump air conditioner is used in an electric vehicle, which includes a battery system 600 and an electric drive system 601.

[0111] based on Figure 6 In the application scenario shown, when the heat pump air conditioner is in heating mode, it first operates in heat pump mode. That is, the high-temperature and high-pressure gaseous refrigerant of the compressor 100 releases heat through the first condenser 101 and then enters the battery cooler 104 through the second expansion valve 105. After absorbing heat from the battery system 600 and the electric drive system 601 in the battery cooler 104, it is pressurized by the gas booster device 200. After ensuring that the refrigerant pressure returning to the gas-liquid separator 300 is close to the pressure required for the hot gas bypass mode, the hot gas bypass mode is activated, so that the hot gas bypass mode and the heat pump mode operate together.

[0112] Furthermore, the energy ratio of the hot gas bypass mode can be adjusted in real time by the control system based on the amount of heat absorbed from the battery system and the electric drive system, thereby achieving a more intelligent and efficient energy distribution.

[0113] Next, let's take... Figure 4 Taking the heat pump air conditioning system shown as an example, combined with Figure 7 and Figure 8 The application scenarios shown illustrate the heating principle of heat pump air conditioners.

[0114] See Figure 7 This is a schematic diagram of a heat pump air conditioning application scenario provided in an embodiment of this application, as shown below. Figure 7As shown, a heat pump air conditioner is used in an electric vehicle, which includes a radiator 500 and a cooling fan 501.

[0115] based on Figure 7 The application scenarios shown illustrate the heating principle of heat pump air conditioners during heating operation. Figure 5 The heating principles shown are similar, the main difference being that they are based on... Figure 7 The application scenario shown includes a direct heat pump operation mode based on the second condenser 400 during reheating. This mode allows the heat absorbed by the battery cooler 104 from the environment and the heat generated in the hot gas bypass mode to be transferred to the passenger compartment of the electric vehicle via the second condenser 400. Simultaneously, if the electric vehicle's battery system requires heating, some heat can be transferred to the battery system via the first condenser 101 through the adjustment of proportional valves 401 and 402. The efficient and intelligent distribution of heat and the adjustment of the proportional valves are all achieved through a dedicated control system.

[0116] See Figure 8 This is a schematic diagram illustrating another heat pump air conditioning application scenario provided in an embodiment of this application, as shown below. Figure 8 As shown, a heat pump air conditioner is used in an electric vehicle, which includes a battery system 600 and an electric drive system 601.

[0117] based on Figure 7 The application scenarios shown illustrate the heating principle of heat pump air conditioners during heating operation. Figure 5 The heating principles shown are similar, the main difference being that they are based on... Figure 7 The application scenario shown, where the heat pump air conditioner operates in reheat mode, also includes a direct heat pump operation mode based on the second condenser 400. This means that the heat absorbed by the battery cooler 104 through waste heat recovery and the heat generated in the hot gas bypass mode can be transferred to the passenger compartment of the electric vehicle through the second condenser 400. Simultaneously, if the electric vehicle's battery system requires heating, some heat can be transferred to the battery system via the first condenser 101 through the adjustment of proportional valves 401 and 402. The efficient and intelligent distribution of heat and the adjustment of the proportional valves are all achieved through a dedicated control system.

[0118] Based on the heat pump air conditioner for electric vehicles provided in the above embodiments, this application also provides a control method for the heat pump air conditioner, used to control the heat pump air conditioner provided in the above embodiments.

[0119] See Figure 9 This is a flowchart illustrating a control method for a heat pump air conditioner provided in an embodiment of this application. Figure 9 As shown, the control method provided in this application embodiment may include the following steps:

[0120] S91. When the heat pump air conditioner is in heating mode, the control gas pressurization device pressurizes the gas output from the battery cooler and inputs the pressurized gas into the compressor suction port so that the pressure on the compressor suction port side meets the operating conditions of the hot gas bypass mode.

[0121] The operating conditions for the hot gas bypass mode can be determined based on actual conditions.

[0122] S92. When the pressure on the compressor suction port side meets the operating conditions for the hot gas bypass mode, the hot gas bypass mode of the heat pump air conditioner is turned on.

[0123] The control method for a heat pump air conditioner provided in this application embodiment involves the following steps: When the heat pump air conditioner is operating in heat pump mode, the gas output from the battery cooler is pressurized by a gas pressurizing device and then input into the compressor suction port. This increases the pressure on the low-pressure side of the compressor, bringing it to a level comparable to that required for the operation of the hot gas bypass system. This allows the hot gas bypass mode to be activated, enabling the simultaneous operation of both the heat pump mode and the hot gas bypass mode. When both modes are operating simultaneously, the heat pump air conditioner can heat the air simultaneously through both the heat pump system and the hot gas bypass system, thereby effectively improving the heating performance of the heat pump air conditioner.

[0124] This application also provides another control method for a heat pump air conditioner, in... Figure 9 Based on the control method shown, it also includes:

[0125] Before turning on the hot air bypass mode of the heat pump air conditioner, determine whether the heat absorbed by the battery cooler is sufficient to meet the heating requirements. If it is determined that the heat absorbed by the battery cooler is insufficient to meet the heating requirements, then turn on the hot air bypass mode of the heat pump air conditioner.

[0126] The heating demand can be determined based on actual conditions. Generally, heating demand refers to the amount of heat required to reach the target temperature from the current temperature. The target temperature can usually be preset to a default value or set by the user according to their own needs.

[0127] In one example, if the electric vehicle equipped with a heat pump air conditioner includes a radiator and a cooling fan, then in medium to low temperature environments, the battery cooler can absorb heat from the environment through the radiator and cooling fan. Based on this, determining whether the heat absorbed by the battery cooler meets the heating requirements can include:

[0128] Determine whether the heat absorbed by the battery cooler from the environment through the radiator and cooling fan meets the heating requirements. If it is determined that the heat absorbed by the battery cooler from the environment through the radiator and cooling fan does not meet the heating requirements, then the heat absorbed by the battery cooler does not meet the heating requirements.

[0129] In another example, if the electric vehicle in which the heat pump air conditioner is located includes a battery system and an electric drive system, then in a low-temperature environment (temperature lower than that of a medium-low temperature environment), because the battery cooler cannot absorb enough heat from the environment, it can absorb heat from both the battery system and the electric drive system. Based on this, determining whether the heat absorbed by the battery cooler meets the heating requirements includes:

[0130] Determine whether the battery cooler can absorb heat from the battery system and the electric drive system, and / or determine whether the heat absorbed by the battery cooler from the battery system and the electric drive system meets the heating requirements. If it is determined that the battery cooler cannot absorb heat from the battery system and the electric drive system, or if it is determined that the heat absorbed by the battery cooler from the battery system and the electric drive system does not meet the heating requirements, determine that the heat absorbed by the battery cooler does not meet the heating requirements.

[0131] Typically, when the battery system and electric drive system themselves require self-heating, the battery cooler cannot absorb heat from the battery system and electric drive system.

[0132] When the battery cooler is unable to absorb heat from the battery system and electric drive system, the heat pump mode can be turned off after the hot gas bypass mode is activated. This means switching the heat pump air conditioner from heat pump mode to hot gas bypass mode. Since the heat pump mode can no longer absorb heat at this time, turning off the heat pump mode can reduce the energy consumed by the heat pump mode and improve heating efficiency.

[0133] The heat pump air conditioner control method provided in this application determines whether to activate the hot gas bypass mode by judging whether the heating capacity of the heat pump mode meets the heating demand. This allows for various combinations of hot gas bypass mode and heat pump mode, thereby broadening the application temperature range of air conditioner heating and eliminating concerns about insufficient heat pump heating capacity even at extremely low ambient temperatures. Furthermore, because the heat pump mode has high heating efficiency, it prioritizes heat absorption from various heat sources. When the heating capacity of the heat pump mode is insufficient, the hot gas bypass mode is introduced to assist heating, achieving high heating efficiency while ensuring the heating effect of the heat pump air conditioner.

[0134] Furthermore, the control method for heat pump air conditioners can also include intelligently adjusting the energy ratio of the hot gas bypass mode in real time according to the overall heating demand, so as to achieve more intelligent and efficient energy distribution.

[0135] Based on the control method of heat pump air conditioner provided in the above embodiments, this application also provides a specific implementation of the control device for heat pump air conditioner.

[0136] See Figure 10This is a schematic diagram of the structure of a control device for a heat pump air conditioner provided in an embodiment of this application, as shown below. Figure 10 As shown, the control device provided in this application embodiment may include the following units:

[0137] The pressure regulating unit 1001 is used to control the gas pressurizing device to pressurize the gas output from the battery cooler when the heat pump air conditioner is running in heat pump mode, and input the pressurized gas into the compressor suction port so that the pressure on the compressor suction port side meets the operating conditions of the hot gas bypass mode.

[0138] The hot gas bypass mode activation unit 1002 is used to activate the hot gas bypass mode of the heat pump air conditioner when the pressure on the compressor suction port side meets the operating conditions of the hot gas bypass mode.

[0139] The control device for a heat pump air conditioner provided in this application embodiment, when the heat pump air conditioner is operating in heat pump mode for heating, pressurizes the gas output from the battery cooler through a gas pressurization device and inputs the pressurized gas into the compressor's suction port, thereby increasing the pressure on the low-pressure side of the compressor. This increases the pressure on the low-pressure side of the compressor to a level comparable to the pressure required for the operation of the hot gas bypass system, thereby enabling the hot gas bypass mode to be further activated. This allows for the simultaneous operation of the heat pump mode and the hot gas bypass mode. When both modes are operating simultaneously, the heat pump air conditioner can heat through both the heat pump system and the hot gas bypass system, thus effectively improving the heating effect of the heat pump air conditioner.

[0140] In some embodiments, the control device for a heat pump air conditioner may further include:

[0141] The judgment unit is used to determine whether the heat absorbed by the battery cooler meets the heating requirements before the hot air bypass mode of the heat pump air conditioner is turned on.

[0142] Hot gas bypass mode activation unit 1002 is used for:

[0143] If it is determined that the heat absorbed by the battery cooler is insufficient to meet the heating demand, the heat pump air conditioner's hot air bypass mode is activated. In some embodiments, when the electric vehicle in which the heat pump air conditioner is located includes a radiator and a cooling fan, the determining unit is configured to:

[0144] Determine whether the heat absorbed by the battery cooler from the environment through the radiator and cooling fan meets the heating requirements;

[0145] If it is determined that the heat absorbed by the battery cooler from the environment through the radiator and cooling fan is insufficient to meet the heating requirements, then the heat absorbed by the battery cooler is insufficient to meet the heating requirements.

[0146] In some embodiments, when the electric vehicle in which the heat pump air conditioner is located includes a battery system and an electric drive system, the determining unit is used to:

[0147] Determine whether the battery cooler can absorb heat from the battery system and the electric drive system, and / or determine whether the heat absorbed by the battery cooler from the battery system and the electric drive system meets the heating requirements.

[0148] If it is determined that the battery cooler cannot absorb heat from the battery system and the electric drive system, or if it is determined that the heat absorbed by the battery cooler from the battery system and the electric drive system is insufficient to meet the heating requirements, then the heat absorbed by the battery cooler is deemed insufficient to meet the heating requirements.

[0149] This application also provides an electric vehicle, which includes the heat pump air conditioner described in any of the above embodiments.

[0150] Figure 11 A schematic diagram of the hardware structure of the control device for a heat pump air conditioner provided in an embodiment of this application is shown.

[0151] The control device of a heat pump air conditioner may include a processor 1101 and a memory 1102 storing computer program instructions.

[0152] Specifically, the processor 1101 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0153] Memory 1102 may include mass storage for data or instructions. For example, and not limitingly, memory 1102 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 1102 may include removable or non-removable (or fixed) media. Where appropriate, memory 1102 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 1102 is non-volatile solid-state memory.

[0154] Memory 1102 may include read-only memory (ROM), random access memory (RAM), disk storage media device, optical storage media device, flash memory device, electrical, optical, or other physical / tangible memory storage device. Therefore, typically, memory 1102 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described in any of the heat pump air conditioning control methods in the above embodiments.

[0155] The processor 1101 reads and executes computer program instructions stored in the memory 1102 to implement any of the heat pump air conditioning control methods in the above embodiments.

[0156] In one example, the control device of a heat pump air conditioner may further include a communication interface 1103 and a bus 1110. For example, Figure 11 As shown, the processor 1101, memory 1102, and communication interface 1103 are connected through bus 1110 and complete communication with each other.

[0157] The communication interface 1103 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0158] Bus 1110 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 1110 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0159] Furthermore, in conjunction with the heat pump air conditioner control method in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the heat pump air conditioner control methods in the above embodiments.

[0160] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A heat pump air conditioner for electric vehicles, characterized in that, This includes refrigeration systems, heat pump systems, and hot gas bypass systems; The refrigeration system includes a compressor, a first condenser, an evaporator, and a first expansion valve; The inlet of the evaporator is connected to the outlet of the first condenser through the first expansion valve, the outlet of the evaporator is connected to the suction port of the compressor, and the inlet of the first condenser is connected to the discharge port of the compressor. The heat pump system includes a battery cooler, a second expansion valve, and a gas pressurization device; The inlet of the battery cooler is connected to the outlet of the first condenser through the second expansion valve, the outlet of the battery cooler is connected to the inlet of the gas booster, and the outlet of the gas booster is connected to the suction port of the compressor. The hot gas bypass system includes: a third expansion valve; The first end of the third expansion valve is connected to the exhaust port of the compressor, and the second end of the third expansion valve is connected to the intake port of the compressor. When the heat pump air conditioner is operating in heat pump mode, the gas pressurization device is used to pressurize the gas output from the battery cooler and send it into the suction port of the compressor so that the pressure on the suction port side of the compressor meets the operating conditions of the hot gas bypass mode. When the operating conditions are met, the heat pump air conditioner activates the hot gas bypass mode, so that the heat pump mode and the hot gas bypass mode are used for heating in combination.

2. The heat pump air conditioner according to claim 1, characterized in that, The heat pump air conditioner also includes: a gas-liquid separator; The outlet of the gas-liquid separator is connected to the suction port of the compressor; The exhaust port of the gas booster is connected to the intake port of the compressor, including: The exhaust port of the gas booster is connected to the inlet of the gas-liquid separator, and the gas-liquid separator is connected to the suction port of the compressor. The outlet of the evaporator is connected to the suction port of the compressor, including: The outlet of the evaporator is connected to the inlet of the gas-liquid separator, and the gas-liquid separator is connected to the suction port of the compressor. The second end of the third expansion valve is connected to the suction port of the compressor, including: The second end of the third expansion valve is connected to the inlet of the gas-liquid separator, and the gas-liquid separator is connected to the suction port of the compressor.

3. The heat pump air conditioner according to claim 1, characterized in that, The heat pump air conditioner also includes: a second condenser, a first proportional valve, and a second proportional valve; The second condenser is located in the passenger compartment of the electric vehicle; The inlet of the second condenser is connected to the exhaust port of the compressor through the second proportional valve, the outlet of the second condenser is connected to the inlet of the battery cooler through the second expansion valve, and the outlet of the second condenser is also connected to the inlet of the evaporator through the first expansion valve; The inlet of the first condenser is connected to the outlet of the compressor, including: The inlet of the first condenser is connected to the exhaust port of the compressor through the first proportional valve.

4. The heat pump air conditioner according to claim 1 or 3, characterized in that, The electric vehicle includes: a radiator and a cooling fan; The battery cooler is used to absorb heat from the environment through the radiator and the cooling fan.

5. The heat pump air conditioner according to claim 1 or 3, characterized in that, The electric vehicle includes: a battery system and an electric drive system; The battery cooler is used to absorb heat from the battery system and the electric drive system.

6. A control method for a heat pump air conditioner, characterized in that, The method for controlling the heat pump air conditioner of the electric vehicle according to any one of claims 1-5 includes: When the heat pump air conditioner is running in heat pump mode, the gas pressurization device is controlled to pressurize the gas output from the battery cooler and the pressurized gas is input into the suction port of the compressor so that the pressure on the suction port side of the compressor meets the operating conditions of the hot gas bypass mode. When the pressure at the compressor suction port meets the operating conditions for the hot gas bypass mode, the hot gas bypass mode of the heat pump air conditioner is activated, so that the heat pump mode and the hot gas bypass mode work together for heating.

7. The method according to claim 6, characterized in that, Before activating the hot gas bypass mode of the heat pump air conditioner, the method further includes: Determine whether the heat absorbed by the battery cooler meets the heating requirements; The activation of the heat pump air conditioner's hot air bypass mode includes: If it is determined that the heat absorbed by the battery cooler is insufficient to meet the heating demand, the hot air bypass mode of the heat pump air conditioner is activated.

8. The method according to claim 7, characterized in that, The electric vehicle includes a radiator and a cooling fan. Determining whether the heat absorbed by the battery cooler meets the heating requirements includes: Determine whether the heat absorbed by the battery cooler from the environment through the radiator and the cooling fan meets the heating requirements; If it is determined that the heat absorbed by the battery cooler from the environment through the radiator and the cooling fan does not meet the heating requirements, then the heat absorbed by the battery cooler does not meet the heating requirements.

9. The method according to claim 7, characterized in that, The electric vehicle includes a battery system and an electric drive system. Determining whether the heat absorbed by the battery cooler meets the heating requirements includes: Determine whether the battery cooler can absorb heat from the battery system and the electric drive system, and / or determine whether the heat absorbed by the battery cooler from the battery system and the electric drive system meets the heating requirements; If it is determined that the battery cooler cannot absorb heat from the battery system and the electric drive system, or if it is determined that the heat absorbed by the battery cooler from the battery system and the electric drive system does not meet the heating requirements, then the heat absorbed by the battery cooler does not meet the heating requirements.

10. A control device for a heat pump air conditioner, characterized in that, The device for controlling the heat pump air conditioner of the electric vehicle according to any one of claims 1-5, the device comprising: The pressure regulating unit is used to control the gas boosting device to boost the gas output by the battery cooler when the heat pump air conditioner is running in heat pump mode, and to input the boosted gas into the suction port of the compressor so that the pressure on the suction port side of the compressor meets the operating conditions of the hot gas bypass mode. The hot gas bypass mode activation unit is used to activate the hot gas bypass mode of the heat pump air conditioner when the pressure on the compressor suction port side meets the operating conditions of the hot gas bypass mode, so that the heat pump mode and the hot gas bypass mode can be used together for heating.

11. A vehicle, characterized in that, Including the heat pump air conditioner for electric vehicles as described in claims 1-5.

12. A control device for a heat pump air conditioner, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the control method of the heat pump air conditioner as described in any one of claims 6-9.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the control method for a heat pump air conditioner as described in any one of claims 6-9.

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