Automobile heat pump air conditioner management system and control method thereof

Abstract

The invention provides an automobile heat pump air conditioner management system and a control method thereof, and relates to the technical field of automobile heat management, in the automobile heat pump air conditioner management system, a heat pump assembly selectively communicates with a liquid cooling condenser and a battery cooler through a valve assembly to form a heating loop or a refrigerating loop; the passenger compartment assembly, the battery pack assembly and the electric drive and electric control assembly are selectively communicated through the first five-way valve and the second five-way valve to form a battery heat exchange loop, a passenger compartment heating loop, a battery heating loop or an electric drive preheating loop. The battery heat exchange loop exchanges heat with the refrigeration loop through the battery cooler; the passenger compartment heating loop, the battery heating loop or the electric drive preheating loop exchanges heat with the heating loop through the liquid cooling condenser, a PTC heater does not need to be additionally arranged, heating of the passenger compartment, the battery pack assembly and the electric drive and electric control assembly can be achieved, and the problem that the automobile energy consumption is high due to the fact that the operation efficiency of the battery pack assembly and the electric drive assembly is reduced at the low temperature is solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile thermal management, and in particular to an automobile heat pump air conditioning management system and a control method thereof. Background Art

[0002] With the increasing popularity of new energy vehicles in China, their endurance is becoming more and more important. As an important part of vehicle energy management, the thermal management system directly affects the vehicle's endurance. In the current mainstream technology, the heating of batteries in the thermal management system is mainly achieved through PTC, which has high cost and low energy efficiency. At the same time, in low temperature environments, the electric drive system starts working in the form of cold start, which reduces the vehicle's endurance. Summary of the invention

[0003] The embodiments of the present application provide an automobile heat pump air conditioning management system and a control method thereof, which are used to solve the problems of high automobile thermal management cost and low energy efficiency.

[0004] In some embodiments, an automobile heat pump air conditioning management system is provided, comprising a heat pump assembly, a battery pack assembly, an electric drive electronic control assembly, a passenger compartment assembly, a liquid-cooled condenser, a battery cooler, a first five-way valve, a second five-way valve, and a valve assembly, wherein the heat pump assembly can be selectively connected to the liquid-cooled condenser and the battery cooler through the valve assembly to form a heating circuit or a cooling circuit; the passenger compartment assembly, the battery pack assembly, and the electric drive electronic control assembly can be selectively connected to form a battery heat exchange circuit, a passenger compartment heating circuit, a battery heating circuit, or an electric drive preheating circuit through the first five-way valve and the second five-way valve; the battery heat exchange circuit exchanges heat with the cooling circuit through the battery cooler; the passenger compartment heating circuit, the battery heating circuit, or the electric drive preheating circuit exchanges heat with the heating circuit through the liquid-cooled condenser.

[0005] In some embodiments, the passenger compartment assembly includes a heater core and a heater water pump. The heater water pump, liquid-cooled condenser, heater core and the first passage of the first five-way valve are connected in sequence to form the passenger compartment heating circuit, which is used to exchange heat with the heating circuit and heat the passenger compartment.

[0006] In some embodiments, the battery pack assembly includes a power battery and a battery water pump. The battery water pump, the second passage of the first five-way valve, the heater water pump, the liquid-cooled condenser, the heater core, the third passage of the first five-way valve, the power battery and the first passage of the second five-way valve are connected in sequence to form the battery heating circuit, which is used to exchange heat with the heating circuit and heat the power battery.

[0007] In some embodiments, the electric drive and electronic control component includes an electric drive assembly and an electric drive water pump. The electric drive water pump, the electric drive assembly, the second passage of the second five-way valve, the battery water pump, the second passage of the first five-way valve, the warm air water pump, the liquid-cooled condenser, the warm air core, the third passage of the first five-way valve, the power battery, and the third passage of the second five-way valve are connected in sequence to form the electric drive preheating circuit, which is used to exchange heat with the heating circuit and preheat the electric drive assembly.

[0008] In some embodiments, the battery heat exchange circuit includes a battery water pump, a fourth passage of a first five-way valve, a battery cooler, a power battery, and a first passage of a second five-way valve connected in sequence, and the battery heat exchange circuit is used to exchange heat with the refrigeration circuit and cool the power battery.

[0009] In some embodiments, the automobile heat pump air conditioning management system also includes a radiator, and the electric drive and electronic control component can be selectively connected to the radiator through the second five-way valve to form an electric drive heat exchange circuit, and the electric drive heat exchange circuit exchanges heat with the outside air through the radiator.

[0010] In some embodiments, the heat pump assembly includes a compressor, an outdoor heat exchanger assembly, an evaporator, and a gas-liquid separator, the refrigeration circuit includes a battery cooling circuit and a passenger compartment cooling circuit, and the compressor, the outdoor heat exchanger assembly, and the gas-liquid separator can be selectively connected to the battery cooler, evaporator, or liquid-cooled condenser through the valve assembly to form a battery cooling circuit, a passenger compartment cooling circuit, or a heating circuit.

[0011] In some embodiments, the valve assembly includes a first stop valve, a second stop valve, a first one-way valve, a second one-way valve, a third one-way valve, a first expansion valve, a second expansion valve, a third expansion valve, and a fourth expansion valve;

[0012] The heating circuit includes a compressor, a fourth expansion valve, a liquid-cooled condenser, a second one-way valve, a first expansion valve, an outdoor heat exchanger assembly, a second stop valve and a gas-liquid separator which are sequentially connected along the flow direction of the refrigerant;

[0013] The battery cooling circuit includes a compressor, a first stop valve, an outdoor heat exchanger assembly, a first check valve, a second expansion valve, a battery cooler and a gas-liquid separator which are sequentially connected along the flow direction of the refrigerant;

[0014] The passenger compartment cooling circuit includes a compressor, a first stop valve, an outdoor heat exchanger assembly, a first one-way valve, a third expansion valve, an evaporator, a third one-way valve and a gas-liquid separator which are sequentially connected along the flow direction of the refrigerant.

[0015] In some embodiments, the automobile heat pump air conditioning management system further includes a first pressure temperature sensor, a second pressure temperature sensor, a third pressure temperature sensor and a first temperature sensor, wherein:

[0016] A first pressure-temperature sensor is connected in the heating circuit and the cooling circuit. In the heating circuit, the first pressure-temperature sensor is connected to the liquid outlet of the second one-way valve. In the cooling circuit, the first pressure-temperature sensor is connected to the liquid outlet of the first one-way valve.

[0017] A first temperature sensor is connected to a liquid outlet of the battery cooler in a refrigeration circuit;

[0018] The second pressure and temperature sensor and the third pressure and temperature sensor are respectively connected to the liquid inlet end and the liquid outlet end of the compressor.

[0019] In some embodiments, the automobile heat pump air conditioning management system also includes a first water temperature sensor and a second water temperature sensor, wherein the first water temperature sensor is connected between the electric drive water pump and the electric drive assembly; the second water temperature sensor is connected between the liquid-cooled condenser and the heater core.

[0020] In some embodiments, the automobile heat pump air conditioning management system also includes a first expansion kettle and a second expansion kettle, the first expansion kettle is connected to the passenger compartment assembly, and the second expansion kettle is respectively connected to the battery pack assembly and the electric drive and electronic control assembly.

[0021] In some embodiments, a control method for an automobile heat pump air conditioning management system is provided, based on the above-mentioned automobile heat pump air conditioning management system, comprising the following steps:

[0022] Acquiring vehicle status, wherein the vehicle status includes the temperature of the battery pack assembly, the electric drive and electronic control assembly, and the ambient temperature;

[0023] A thermal management mode is selected based on the needs of the passenger compartment and the vehicle status, and the thermal management mode includes at least: a passenger compartment heating mode, a battery heating mode, an electric drive preheating mode and a cooling mode.

[0024] The automobile heat pump air conditioning management system provided by the embodiment of the present application does not need to add a PTC heater. In a low temperature environment, the first five-way valve and the second five-way valve can be directly used to selectively connect with the passenger compartment assembly, the battery pack assembly and the electric drive electronic control assembly to form a passenger compartment heating circuit, a battery heating circuit or an electric drive preheating circuit, and heat is exchanged with the heating circuit through a liquid-cooled condenser to achieve heating of the passenger compartment, the battery pack assembly and the electric drive electronic control assembly. The equipment cost is reduced, and the problem of reduced operating efficiency due to the low temperature of the battery pack assembly can be solved. At the same time, the electric drive system can be preheated to avoid the increase in automobile energy consumption caused by the cold start of the electric drive at a low temperature, thereby improving the vehicle's endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a schematic diagram of the connection relationship of the automobile heat pump air conditioning management system in some embodiments of the present application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure of the first five-way valve and the second five-way valve in the embodiment;

[0028] Figure 3 yes Figure 1 Schematic diagram of the passenger compartment heating circuit and the electric drive cooling circuit in the embodiment;

[0029] Figure 4 yes Figure 1 Schematic diagram of the principle of the battery heating circuit in the embodiment;

[0030] Figure 5 yes Figure 1 Schematic diagram of the principle of the electric drive preheating circuit in the embodiment;

[0031] Figure 6 yes Figure 1 Schematic diagram of the principle of the battery heat exchange circuit in the embodiment;

[0032] Figure 7 yes Figure 1 Schematic diagram of the principle of the heating circuit in the embodiment;

[0033] Figure 8 yes Figure 1 Schematic diagram of the battery cooling circuit in the embodiment;

[0034] Fig. 9 yes Figure 1 Schematic diagram of the passenger compartment cooling circuit in an embodiment.

[0035] In the above drawings:

[0036] 10. Heat pump assembly; 11. Compressor; 12. Outdoor heat exchanger assembly; 13. Evaporator; 14. Gas-liquid separator;

[0037] 20. Passenger compartment assembly; 21. Heater core; 22. Heater water pump;

[0038] 30. Battery pack assembly; 31. Power battery; 32. Battery water pump;

[0039] 40. Electric drive and electric control components; 41. Electric drive assembly; 42. Electric drive water pump;

[0040] 50. Valve assembly; 51. First stop valve; 52. Second stop valve; 53. First check valve; 54. Second check valve; 55. Third check valve; 56. First expansion valve; 57. Second expansion valve; 58. Third expansion valve; 59. Fourth expansion valve;

[0041] 61. First five-way valve; 62. Second five-way valve; 63. Liquid-cooled condenser; 64. Battery cooler; 65. Radiator; 66. First expansion kettle; 67. Second expansion kettle;

[0042] 71. First pressure and temperature sensor; 72. Second pressure and temperature sensor; 73. Third pressure and temperature sensor; 74. First temperature sensor; 75. First water temperature sensor; 76. Second water temperature sensor. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0044] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] See also Figure 1 , Figure 1 Schematic diagram of the connection relationship of the automobile heat pump air conditioning management system in some embodiments of the present application. The embodiment of the present application provides an automobile heat pump air conditioning management system, which is applied to the passenger compartment and power components in electric vehicles for temperature adjustment. The automobile heat pump air conditioning management system includes a heat pump assembly 10, a battery pack assembly 30, an electric drive and electric control assembly 40, a passenger compartment assembly 20, a liquid cooling condenser 63, a battery cooler 64, a first five-way valve 61, a second five-way valve 62, and a valve assembly 50. Among them, the heat pump assembly 10 can be selectively connected with the liquid-cooled condenser 63 and the battery cooler 64 through the valve assembly 50 to form a heating circuit or a cooling circuit; the passenger compartment assembly 20, the battery pack assembly 30 and the electric drive and electronic control assembly 40 can be selectively connected through the first five-way valve 61 and the second five-way valve 62 to form a battery heat exchange circuit, a passenger compartment heating circuit, a battery heating circuit or an electric drive preheating circuit; the battery heat exchange circuit exchanges heat with the cooling circuit through the battery cooler 64, and the passenger compartment heating circuit, the battery heating circuit or the electric drive preheating circuit exchanges heat with the heating circuit through the liquid-cooled condenser 63.

[0047] In this embodiment, there is no need to add a PTC heater. In a low temperature environment, the first five-way valve 61 and the second five-way valve 62 can be directly used to selectively connect with the passenger compartment assembly 20, the battery pack assembly 30 and the electric drive electronic control assembly 40 to form a passenger compartment heating circuit, a battery heating circuit or an electric drive preheating circuit, and heat is exchanged with the heating circuit through the liquid-cooled condenser 63 to achieve heating of the passenger compartment, the battery pack assembly 30 and the electric drive electronic control assembly 40. This can solve the problem of reduced operating efficiency of the battery pack assembly 30 due to low temperature. At the same time, the electric drive electronic control assembly 40 can be preheated to avoid cold start of the electric drive at low temperature, which will increase the energy consumption of the vehicle and improve the vehicle's endurance.

[0048] See also Figure 2 as well as Figure 3 , Figure 2 yes Figure 1 A schematic diagram of the structure of the first five-way valve 61 and the second five-way valve 62 in the embodiment, Figure 3 yes Figure 1 Schematic diagram of the principles of the passenger compartment heating circuit and the electric drive cooling circuit in the embodiment.

[0049] In some embodiments, the passenger compartment assembly 20 includes a heater core 21 and a heater water pump 22. The heater water pump 22, the liquid-cooled condenser 63, the heater core 21, and the first passage of the first five-way valve 61 are sequentially connected to form a passenger compartment heating circuit for exchanging heat with the heating circuit and heating the passenger compartment. In this embodiment, the first passage of the first five-way valve 61 is a CD end connecting passage.

[0050] See also Figure 2 as well as Figure 4 , Figure 4 yes Figure 1 Schematic diagram of the principle of the battery heating circuit in the embodiment. The battery pack assembly 30 includes a power battery 31 and a battery water pump 32. The battery water pump 32, the second passage of the first five-way valve 61, the warm air water pump 22, the liquid-cooled condenser 63, the warm air core 21, the third passage of the first five-way valve 61, the power battery 31 and the first passage of the second five-way valve 62 are connected in sequence to form a battery heating circuit, which is used to exchange heat with the heating circuit and heat the power battery 31. In this embodiment, the second passage of the first five-way valve 61 is the BC end connection passage, the third passage is the AD end connection passage, and the first passage of the second five-way valve 62 is the CD end connection passage. In this embodiment, the power battery 31 is connected in series with the warm air core 21, and can exchange heat with the heating circuit through the liquid-cooled condenser 63 and heat the power battery 31 and the passenger compartment at the same time.

[0051] See also Figure 2 as well as Figure 5 , Figure 5 yes Figure 1Schematic diagram of the principle of the electric drive preheating circuit in the embodiment. The electric drive electric control component 40 includes an electric drive assembly 41 and an electric drive water pump 42. The electric drive water pump 42, the electric drive assembly 41, the second passage of the second five-way valve 62, the battery water pump 32, the second passage of the first five-way valve 61, the warm air water pump 22, the liquid-cooled condenser 63, the warm air core 21, the third passage of the first five-way valve 61, the power battery 31, and the third passage of the second five-way valve 62 are connected in sequence to form an electric drive preheating circuit, which is used to exchange heat with the heating circuit and preheat the electric drive assembly 41. In this embodiment, the second passage of the second five-way valve 62 is the BC end connection passage, and the third passage is the AD end connection passage. In this embodiment, the electric drive assembly 41, the power battery 31 and the warm air core 21 are connected in series, and can exchange heat with the heating circuit through the liquid-cooled condenser 63 and heat the electric drive assembly 41, the power battery 31 and the passenger compartment at the same time.

[0052] See also Figure 2 as well as Figure 6 , Figure 6 yes Figure 1 Schematic diagram of the principle of the battery heat exchange circuit in the embodiment. The battery heat exchange circuit includes the battery water pump 32, the fourth passage of the first five-way valve 61, the battery cooler 64, the power battery 31 and the first passage of the second five-way valve 62, which are connected in sequence. The battery heat exchange circuit is used to exchange heat with the refrigeration circuit and cool the power battery 31. In this embodiment, the fourth passage of the first five-way valve 61 is the BE end connection passage.

[0053] Please review Figure 2 as well as Figure 3 In some embodiments, the automobile heat pump air conditioning management system further includes a radiator 65. The electric drive and electric control component 40 can be selectively connected to the radiator 65 through the second five-way valve 62 to form an electric drive heat exchange circuit. The electric drive heat exchange circuit exchanges heat with the outside air through the radiator 65 to achieve the heat dissipation function of the electric drive assembly 41. The electric drive heat exchange circuit includes the electric drive water pump 42, the electric drive assembly 41, the fourth passage of the second five-way valve 62, and the radiator 65, which are connected in sequence. In this embodiment, the fourth passage of the second five-way valve 62 is a BE end connection passage.

[0054] In some embodiments, the heat pump assembly 10 includes a compressor 11, an outdoor heat exchanger assembly 12, an evaporator 13, and a gas-liquid separator 14. The refrigeration circuit includes a battery cooling circuit and a passenger compartment cooling circuit. The compressor 11, the outdoor heat exchanger assembly 12, and the gas-liquid separator 14 can be selectively connected to the battery cooler 64, the evaporator 13, or the liquid-cooled condenser 63 through the valve assembly 50 to form a battery cooling circuit, a passenger compartment cooling circuit, or a heating circuit. It should be noted that the outdoor heat exchanger assembly 12 cools the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 11 into a high-pressure and low-temperature liquid refrigerant when in the refrigeration circuit; in the heating circuit, the refrigerant is changed from a misty liquid to a gaseous state to absorb heat outside the vehicle.

[0055] Specifically, the valve assembly 50 includes a first stop valve 51 , a second stop valve 52 , a first check valve 53 , a second check valve 54 , a third check valve 55 , a first expansion valve 56 , a second expansion valve 57 , a third expansion valve 58 , and a fourth expansion valve 59 .

[0056] See also Figure 7 , Figure 7 yes Figure 1 Schematic diagram of the principle of the heating circuit in the embodiment. The heating circuit includes a compressor 11, a fourth expansion valve 59, a liquid-cooled condenser 63, a second one-way valve 54, a first expansion valve 56, an outdoor heat exchanger assembly 12, a second stop valve 52 and a gas-liquid separator 14, which are sequentially connected along the flow direction of the refrigerant. In the heating circuit, heat is generated by the work of the compressor 11, and the heat is transferred to the coolant in the passenger compartment heating circuit, the battery heating circuit or the electric drive preheating circuit through the liquid-cooled condenser 63 to heat the passenger compartment and / or the power components of the vehicle. For example, in the single passenger compartment heating mode, the passenger compartment heating circuit is connected, and the warm air water pump 22 is running to transfer the heat exchanged with the liquid-cooled condenser 63 to the warm air core 21, and the heat is transferred to the passenger compartment through the blower, so as to achieve the purpose of heating the passenger compartment. Optionally, the outdoor heat exchanger assembly 12 can also heat the passenger compartment by combining the heat exchanged by the radiator 65 and the heat generated by the work of the compressor 11, wherein the heat exchanged by the radiator 65 can come from the outside air or from the waste heat of the electric drive assembly 41, thereby further improving the recovery of heat energy.

[0057] The present application selectively connects the first five-way valve 61 and the second five-way valve 62 to form different circuits to achieve different thermal management modes, thereby improving the integration of the heat pump assembly 10 with the battery pack assembly 30, the passenger compartment assembly 20, and the electric drive and electronic control assembly 40, saving the cost of the entire vehicle while also reducing the energy consumption of the entire vehicle, ensuring that the electric drive assembly 41 and the power battery 31 operate in a suitable temperature range, and improving endurance.

[0058] See also Figure 8 , Figure 8 yes Figure 1 Schematic diagram of the principle of the battery cooling circuit in the embodiment. The battery cooling circuit includes a compressor 11, a first stop valve 51, an outdoor heat exchanger assembly 12, a first one-way valve 53, a second expansion valve 57, a battery cooler 64 and a gas-liquid separator 14, which are connected in sequence along the flow direction of the refrigerant. The battery cooling circuit is used to cool the power battery 31. For example, when a single battery is cooled, the compressor 11 compresses and does work, and after the heat is dissipated through the outdoor heat exchanger assembly 12, the second expansion valve 57 is used for throttling, pressure reduction and temperature reduction, and finally the heat is exchanged with the battery heat exchange circuit in the battery cooler 64 and returned to the compressor 11, and so on and so forth, so as to bring the heat of the power battery 31 to the outdoor heat exchanger assembly 12 for external heat dissipation, thereby achieving cooling of the power battery 31.

[0059] See also Fig. 9 , Fig. 9 yes Figure 1 Schematic diagram of the passenger compartment cooling circuit in the embodiment. The passenger compartment cooling circuit includes a compressor 11, a first stop valve 51, an outdoor heat exchanger assembly 12, a first one-way valve 53, a third expansion valve 58, an evaporator 13, a third one-way valve 55 and a gas-liquid separator 14, which are sequentially connected along the flow direction of the refrigerant. The passenger compartment cooling circuit is used to cool the passenger compartment. For example, when cooling a single passenger compartment, the compressor 11 compresses and works, and after the heat is dissipated through the outdoor heat exchanger assembly 12, the third expansion valve 58 is used for throttling, pressure reduction and temperature reduction, and finally the heat of the passenger compartment is absorbed in the evaporator 13 and returned to the compressor 11, and so on, so as to bring the heat of the passenger compartment to the outdoor heat exchanger assembly 12 for external heat dissipation, thereby achieving cooling of the passenger compartment.

[0060] Please combine Figure 8 as well as Fig. 9 It can be understood that when the passenger compartment and the power battery 31 need to be cooled at the same time, it is only necessary to combine the above-mentioned single passenger compartment cooling mode with the single battery cooling mode, that is, open the first stop valve 51 and the battery water pump 32, and throttle the battery cooling circuit and the passenger compartment cooling circuit respectively through the second expansion valve 57 and the third expansion valve 58, and close other valves and water pumps.

[0061] See also Figure 1In some embodiments, the automobile heat pump air conditioning management system further includes a first pressure temperature sensor 71, a second pressure temperature sensor 72, a third pressure temperature sensor 73, and a first temperature sensor 74. The first pressure temperature sensor 71 is connected to the heating circuit and the refrigeration circuit. In the heating circuit, the first pressure temperature sensor 71 is connected to the liquid outlet of the second one-way valve 54, and in the refrigeration circuit, the first pressure temperature sensor 71 is connected to the liquid outlet of the first one-way valve 53; the first temperature sensor 74 is connected to the liquid outlet of the battery cooler 64 in the refrigeration circuit; the second pressure temperature sensor 72 and the third pressure temperature sensor 73 are respectively connected to the liquid inlet and liquid outlet of the compressor 11. The first pressure temperature sensor 71, the second pressure temperature sensor 72, and the third pressure temperature sensor 73 can detect the pressure and temperature of the refrigerant flowing through. The first temperature sensor 74 can detect the pressure of the refrigerant flowing through.

[0062] Please continue reading Figure 1 In some embodiments, the automobile heat pump air conditioning management system further includes a first water temperature sensor 75 and a second water temperature sensor 76. The first water temperature sensor 75 is connected between the electric drive water pump 42 and the electric drive assembly 41; the second water temperature sensor 76 is connected between the liquid cooling condenser 63 and the heater core 21. The first water temperature sensor 75 and the second water temperature sensor 76 can detect the temperature of the coolant flowing through.

[0063] It is understandable that the above-mentioned sensors can be connected to an on-board computer or an independent controller so as to adjust the circuit operation status in real time according to the ambient temperature and the operating parameters of each sensor, and the auxiliary circuit can realize functions such as heating and cooling.

[0064] In some embodiments, the automobile heat pump air conditioning management system also includes a first expansion kettle 66 and a second expansion kettle 67. The first expansion kettle 66 is connected to the passenger compartment assembly 20, and the second expansion kettle 67 is connected to the battery pack assembly 30 and the electric drive and electronic control assembly 40 respectively.

[0065] In some embodiments, a control method for an automobile heat pump air conditioning management system is provided, based on the above-mentioned automobile heat pump air conditioning management system, comprising the following steps:

[0066] Obtain vehicle status, including the temperature of the battery pack components, electric drive and electronic control components, and ambient temperature;

[0067] A thermal management mode is selected based on the needs of the passenger compartment and the vehicle status. The thermal management mode includes at least a passenger compartment heating mode, a battery heating mode, an electric drive preheating mode, and a cooling mode.

[0068] In the passenger compartment heating mode, the heating circuit is connected to the passenger compartment heating circuit, and the battery heat exchange circuit can be selectively connected to achieve separate heating of the passenger compartment.

[0069] In the battery heating mode, the heating circuit is connected to the battery heating circuit, which can achieve simultaneous heating of the power battery and the passenger compartment.

[0070] In the electric drive preheating mode, the heating circuit is connected to the electric drive preheating circuit, which can achieve simultaneous heating of the electric drive assembly, power battery and passenger compartment.

[0071] The cooling mode can realize individual cooling and combined cooling of the passenger compartment, electric drive assembly and / or power battery. In the single passenger compartment cooling mode, the passenger compartment cooling circuit is connected. In the single battery cooling mode, the battery cooling circuit is connected to the battery heat exchange circuit, which can realize cooling of the power battery. In the electric drive cooling mode, the electric drive heat exchange circuit is connected. The combined cooling mode of the passenger compartment, electric drive assembly and power battery can include a passenger compartment and battery dual cooling mode, a passenger compartment and electric drive dual cooling mode, a battery and electric drive dual cooling mode, and a passenger compartment and battery and electric drive synchronous cooling mode, as long as the above-mentioned individual cooling modes are combined. For example, in the passenger compartment and battery dual cooling mode, the battery cooling circuit, the passenger compartment cooling circuit and the battery heat exchange circuit are connected, and the electric drive cooling circuit can be selectively connected, which can realize cooling of the passenger compartment and the power battery.

[0072] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An automobile heat pump air conditioning management system, characterized in that: It includes a heat pump assembly, a battery pack assembly, an electric drive and electronic control assembly, a passenger compartment assembly, a liquid-cooled condenser, a battery cooler, a first five-way valve, a second five-way valve, and a valve assembly, among which: The heat pump assembly can selectively communicate with the liquid-cooled condenser and the battery cooler through a valve assembly to form a heating circuit or a cooling circuit; The passenger compartment assembly, the battery pack assembly and the electric drive and electric control assembly are selectively connected through the first five-way valve and the second five-way valve to form a battery heat exchange circuit, a passenger compartment heating circuit, a battery heating circuit or an electric drive preheating circuit; The battery heat exchange circuit exchanges heat with the refrigeration circuit through the battery cooler; the passenger compartment heating circuit, the battery heating circuit or the electric drive preheating circuit exchanges heat with the heating circuit through the liquid-cooled condenser.

2. The automobile heat pump air conditioning management system according to claim 1, characterized in that: The passenger compartment assembly includes a heater core and a heater water pump. The heater water pump, liquid-cooled condenser, heater core and the first passage of the first five-way valve are connected in sequence to form the passenger compartment heating circuit for exchanging heat with the heating circuit and heating the passenger compartment.

3. The automobile heat pump air conditioning management system according to claim 2, characterized in that: The battery pack assembly includes a power battery and a battery water pump. The battery water pump, the second passage of the first five-way valve, the heater water pump, the liquid-cooled condenser, the heater core, the third passage of the first five-way valve, the power battery and the first passage of the second five-way valve are connected in sequence to form the battery heating circuit for exchanging heat with the heating circuit and heating the power battery.

4. The automobile heat pump air conditioning management system according to claim 3, characterized in that: The electric drive and electronic control component includes an electric drive assembly and an electric drive water pump. The electric drive water pump, the electric drive assembly, the second passage of the second five-way valve, the battery water pump, the second passage of the first five-way valve, the warm air water pump, the liquid-cooled condenser, the warm air core, the third passage of the first five-way valve, the power battery, and the third passage of the second five-way valve are connected in sequence to form the electric drive preheating circuit, which is used to exchange heat with the heating circuit and preheat the electric drive assembly.

5. The automobile heat pump air conditioning management system according to claim 3, characterized in that: The battery heat exchange circuit includes a battery water pump, a fourth passage of a first five-way valve, a battery cooler, a power battery and a first passage of a second five-way valve connected in sequence. The battery heat exchange circuit is used to exchange heat with the refrigeration circuit and cool the power battery.

6. The automobile heat pump air conditioning management system according to any one of claims 1 to 5, characterized in that: The automobile heat pump air conditioning management system also includes a radiator. The electric drive and electric control component can be selectively connected to the radiator through the second five-way valve to form an electric drive heat exchange circuit. The electric drive heat exchange circuit exchanges heat with the outside air through the radiator.

7. The automobile heat pump air conditioning management system according to any one of claims 1 to 5, characterized in that: The heat pump assembly includes a compressor, an outdoor heat exchanger assembly, an evaporator and a gas-liquid separator. The refrigeration circuit includes a battery cooling circuit and a passenger compartment cooling circuit. The compressor, the outdoor heat exchanger assembly and the gas-liquid separator can be selectively connected to the battery cooler, the evaporator or the liquid-cooled condenser through the valve assembly to form a battery cooling circuit, a passenger compartment cooling circuit or a heating circuit.

8. The automobile heat pump air conditioning management system according to claim 7, characterized in that: The valve assembly includes a first stop valve, a second stop valve, a first one-way valve, a second one-way valve, a third one-way valve, a first expansion valve, a second expansion valve, a third expansion valve, and a fourth expansion valve; The heating circuit includes a compressor, a fourth expansion valve, a liquid-cooled condenser, a second one-way valve, a first expansion valve, an outdoor heat exchanger assembly, a second stop valve and a gas-liquid separator which are sequentially connected along the flow direction of the refrigerant; The battery cooling circuit includes a compressor, a first stop valve, an outdoor heat exchanger assembly, a first check valve, a second expansion valve, a battery cooler and a gas-liquid separator which are sequentially connected along the flow direction of the refrigerant; The passenger compartment cooling circuit includes a compressor, a first stop valve, an outdoor heat exchanger assembly, a first one-way valve, a third expansion valve, an evaporator, a third one-way valve and a gas-liquid separator which are sequentially connected along the flow direction of the refrigerant.

9. The automobile heat pump air conditioning management system according to claim 8, characterized in that: The automobile heat pump air conditioning management system also includes: a first pressure-temperature sensor connected in the heating circuit and the cooling circuit, wherein the first pressure-temperature sensor is connected to a liquid outlet of the second one-way valve in the heating circuit, and the first pressure-temperature sensor is connected to a liquid outlet of the first one-way valve in the cooling circuit; a first temperature sensor connected to a liquid outlet of the battery cooler in a refrigeration circuit; The second pressure and temperature sensor and the third pressure and temperature sensor are connected to the liquid inlet and the liquid outlet of the compressor respectively.

10. The automobile heat pump air conditioning management system according to claim 8, characterized in that: The automobile heat pump air conditioning management system also includes: A first water temperature sensor connected between the electric drive water pump and the electric drive assembly; The second water temperature sensor is connected between the liquid-cooled condenser and the heater core.

11. The automobile heat pump air conditioning management system according to claim 1, characterized in that: The automobile heat pump air conditioning management system also includes a first expansion kettle and a second expansion kettle, wherein the first expansion kettle is connected to the passenger compartment assembly, and the second expansion kettle is connected to the battery pack assembly and the electric drive and electronic control assembly respectively.

12. A control method for an automobile heat pump air conditioning management system, characterized in that: The automobile heat pump air conditioning management system according to any one of claims 1 to 11 comprises the following steps: Acquiring vehicle status, wherein the vehicle status includes the temperature of the battery pack assembly, the electric drive and electronic control assembly, and the ambient temperature; A thermal management mode is selected based on the needs of the passenger compartment and the vehicle status, and the thermal management mode includes at least a passenger compartment heating mode, a battery heating mode, an electric drive preheating mode and a cooling mode.

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