Automobile heat pump air conditioning management system and control method thereof

Abstract

The application provides an automobile heat pump air conditioner management system and a control method thereof, and relates to the technical field of automobile heat management. The automobile heat pump air conditioner management system comprises a heat pump assembly, a passenger cabin assembly, a battery pack assembly and an electric drive electric control assembly. The heat pump assembly is selectively communicated with a liquid cooling condenser and a battery cooler through a valve assembly to form a heating circuit or a refrigeration circuit. The passenger cabin assembly, the battery pack assembly and the electric drive electric control assembly are selectively communicated through a first five-way valve and a second five-way valve to form a battery heat exchange circuit, a passenger cabin 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 cabin heating circuit, the battery heating circuit or the electric drive preheating circuit exchanges heat with the heating circuit through the liquid cooling condenser. Without adding a PTC heater, the heating of the passenger cabin, the battery pack assembly and the electric drive electric control assembly can be realized, and the problem of high automobile energy consumption caused by the low operating efficiency of the battery pack assembly and the electric drive assembly at low temperature is solved.

Description

TECHNICAL FIELD

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

[0002] With the increasing popularity of new energy vehicles in China, the endurance capability is paid more and more attention. As an important part of the whole vehicle energy management, the thermal management system directly affects the endurance capability of the whole vehicle. At present, the mainstream technology is that the heating of the battery in the thermal management system is mainly realized by PTC, which has high cost and low energy efficiency. Meanwhile, in a low temperature environment, the electric drive system starts to work in the form of cold start, which reduces the endurance mileage of the automobile. SUMMARY

[0003] The application provides an automobile heat pump air conditioner management system and a control method thereof, which are used for solving the problems of high cost and low energy efficiency of automobile thermal management.

[0004] In some embodiments, an automobile heat pump air conditioner management system is provided, which comprises a heat pump assembly, a battery pack assembly, an electric drive electric control assembly, a passenger cabin assembly, a liquid cooling condenser, a battery cooler, a first five-way valve, a second five-way valve and a valve assembly. The heat pump assembly is selectively communicated with the liquid cooling condenser and the battery cooler through the valve assembly to form a heating circuit or a refrigeration circuit. The passenger cabin assembly, the battery pack assembly and the electric drive electric control assembly are selectively communicated through the first five-way valve and the second five-way valve to form a battery heat exchange circuit, a passenger cabin 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 cabin heating circuit, the battery heating circuit or the electric drive preheating circuit exchanges heat with the heating circuit through the liquid cooling condenser.

[0005] In some embodiments, the passenger cabin assembly comprises a heating core and a heating water pump. The heating water pump, the liquid cooling condenser, the heating core and a first passage of the first five-way valve are sequentially communicated to form the passenger cabin heating circuit, which is used for heat exchange with the heating circuit and heating of the passenger cabin.

[0006] In some embodiments, the battery pack assembly comprises a power battery and a battery water pump. The battery water pump, a second passage of the first five-way valve, the heating water pump, the liquid cooling condenser, the heating core, a third passage of the first five-way valve, the power battery and a first passage of the second five-way valve are sequentially communicated to form the battery heating circuit, which is used for heat exchange with the heating circuit and heating of the power battery.

[0007] In some embodiments, the electric drive control assembly comprises 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 heater water pump, the liquid cooling condenser, the heater core, the third passage of the first five-way valve, the power battery, and the third passage of the second five-way valve are sequentially communicated to form the electric drive preheating circuit, which is used for heat exchange with the heating circuit and preheats the electric drive assembly.

[0008] In some embodiments, the battery heat exchange circuit comprises a battery water pump, a fourth passage of the first five-way valve, a battery cooler, a power battery, and a first passage of the second five-way valve which are sequentially communicated, the battery heat exchange circuit is used for heat exchange with the refrigeration circuit and cools the power battery.

[0009] In some embodiments, the automobile heat pump air conditioning management system further comprises a radiator, the electric drive control assembly is selectively communicated with 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 external air through the radiator.

[0010] In some embodiments, the heat pump assembly comprises a compressor, an outdoor heat exchanger assembly, an evaporator, and a gas-liquid separator, the refrigeration circuit comprises a battery cooling circuit and a passenger cabin cooling circuit, the compressor, the outdoor heat exchanger assembly, and the gas-liquid separator are selectively communicated with the battery cooler, the evaporator, or the liquid cooling condenser through the valve assembly to form the battery cooling circuit, the passenger cabin cooling circuit, or the heating circuit.

[0011] In some embodiments, the valve assembly comprises 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 comprises, in sequence along the flow direction of the refrigerant, a compressor, a fourth expansion valve, a liquid cooling condenser, a second one-way valve, a first expansion valve, an outdoor heat exchanger assembly, a second stop valve, and a gas-liquid separator.

[0013] The battery cooling circuit comprises, in sequence along the flow direction of the refrigerant, a compressor, a first stop valve, an outdoor heat exchanger assembly, a first one-way valve, a second expansion valve, a battery cooler, and a gas-liquid separator.

[0014] The passenger cabin cooling circuit comprises, in sequence along the flow direction of the refrigerant, 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.

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

[0016] The first pressure temperature sensor is connected in the heating circuit and the refrigeration circuit, in the heating circuit the first pressure temperature sensor is in communication with the liquid outlet end of the second one-way valve, in the refrigeration circuit the first pressure temperature sensor is in communication with the liquid outlet end of the first one-way valve;

[0017] The first temperature sensor is connected with the liquid outlet end of the battery cooler in the refrigeration circuit;

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

[0019] In some embodiments, the automobile heat pump air conditioning management system further comprises 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 cooling condenser and the warm air core.

[0020] In some embodiments, the automobile heat pump air conditioning management system further comprises a first expansion water pot and a second expansion water pot, the first expansion water pot is in communication with the passenger cabin assembly, and the second expansion water pot is in communication with the battery pack assembly and the electric drive electronic control assembly respectively.

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

[0022] Obtaining the vehicle state, the vehicle state includes the temperature of the battery pack assembly, the electric drive electronic control assembly and the ambient temperature;

[0023] Selecting a heat management mode based on the demand of the passenger cabin and the vehicle state, the heat management mode at least includes: passenger cabin heating mode, battery heating mode, electric drive preheating mode and refrigeration mode.

[0024] The automobile heat pump air conditioner management system provided in the embodiments of the present application does not need to additionally add a PTC heater, directly utilizes a first five-way valve and a second five-way valve to selectively communicate with a passenger cabin assembly, a battery pack assembly and an electric drive electric control assembly to form a passenger cabin heating loop, a battery heating loop or an electric drive preheating loop in a low temperature environment, and exchanges heat with a heating loop through a liquid cooling condenser to heat the passenger cabin, the battery pack assembly and the electric drive electric control assembly. The equipment cost is reduced, the problem of reduced operation efficiency caused by low temperature of the battery pack assembly can be solved, the electric drive system can be preheated, the cold start of the electric drive at low temperature is avoided, the energy consumption of the automobile is reduced, and the cruising range of the automobile is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

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

[0027] Figure 2 is Figure 1 is a schematic diagram of the structure of the first five-way valve and the second five-way valve in the embodiments;

[0028] Figure 3 is Figure 1 is a schematic diagram of the principle of the passenger cabin heating loop and the electric drive heat dissipation loop in the embodiments;

[0029] Figure 4 is Figure 1 is a schematic diagram of the principle of the battery heating loop in the embodiments;

[0030] Figure 5 is Figure 1 is a schematic diagram of the principle of the electric drive preheating loop in the embodiments;

[0031] Figure 6 is Figure 1 is a schematic diagram of the principle of the battery heat exchange loop in the embodiments;

[0032] Figure 7 is Figure 1 is a schematic diagram of the principle of the heating loop in the embodiments;

[0033] Figure 8 is Figure 1 is a schematic diagram of the principle of the battery cooling loop in the embodiments;

[0034] Figure 9 isFigure 1 Principle schematic diagram of passenger cabin cooling circuit in embodiment.

[0035] In the above figures:

[0036] 10, heat pump assembly; 11, compressor; 12, outdoor heat exchanger assembly; 13, evaporator; 14, gas-liquid separator;

[0037] 20, passenger cabin assembly; 21, heater core; 22, heater water pump;

[0038] 30, battery pack assembly; 31, power battery; 32, battery water pump;

[0039] 40, electric drive electronic control assembly; 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 cooling condenser; 64, battery cooler; 65, radiator; 66, first expansion water pot; 67, second expansion water pot;

[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 will be further described below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only for illustrating the present application, but not for limiting the scope of the present application. Similarly, the following embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0044] The terms "first", "second", "third", etc. 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 the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the process, method, product or device.

[0045] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily referring to a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with each other.

[0046] Please refer to Figure 1 , 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. The embodiments of the present application provide an automobile heat pump air conditioning management system applied to temperature regulation of the passenger cabin and power components in an electric vehicle. The automobile heat pump air conditioning management system includes a heat pump assembly 10, a battery pack assembly 30, an electric drive electronic control assembly 40, a passenger cabin assembly 20, a liquid-cooled condenser 63, a battery cooler 64, a first five-way valve 61, a second five-way valve 62, and a valve assembly 50. The heat pump assembly 10 is selectively communicated with the liquid-cooled condenser 63 and the battery cooler 64 through the valve assembly 50 to form a heating circuit or a refrigeration circuit; the passenger cabin assembly 20, the battery pack assembly 30, and the electric drive electronic control assembly 40 are selectively communicated through the first five-way valve 61 and the second five-way valve 62 to form a battery heat exchange circuit, a passenger cabin 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 64, and the passenger cabin 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 the embodiment, without adding a PTC heater, the first five-way valve 61 and the second five-way valve 62 are directly used to selectively communicate with the passenger cabin assembly 20, the battery pack assembly 30, and the electric drive electric control assembly 40 to form a passenger cabin heating loop, a battery heating loop, or an electric drive preheating loop in a low-temperature environment, and exchange heat with the heating loop through the liquid cooling condenser 63 to heat the passenger cabin, the battery pack assembly 30, and the electric drive electric control assembly 40, thereby solving the problem of reduced running efficiency of the battery pack assembly 30 due to low temperature, and preheating the electric drive electric control assembly 40 to avoid increased energy consumption of the automobile due to cold start of the electric drive in low temperature, and improving the endurance of the automobile.

[0048] Referring to Figure 2 and Figure 3 , Figure 2 is Figure 1 a structural schematic view of the first five-way valve 61 and the second five-way valve 62 in the embodiment, Figure 3 is Figure 1 a principle schematic view of the passenger cabin heating loop and the electric drive heat dissipation loop in the embodiment.

[0049] In some embodiments, the passenger cabin assembly 20 includes a heater core 21 and a heater water pump 22, the heater water pump 22, the liquid cooling condenser 63, the heater core 21, and a first passage of the first five-way valve 61 are sequentially communicated to form a passenger cabin heating loop for heat exchange with the heating loop and heating the passenger cabin. In the embodiment, the first passage of the first five-way valve 61 is a C-D end connection passage.

[0050] Referring to Figure 2 and Figure 4 , Figure 4 is Figure 1 a principle schematic view of the battery heating loop in the embodiment. The battery pack assembly 30 includes a power battery 31 and a battery water pump 32, the battery water pump 32, a second passage of the first five-way valve 61, the heater water pump 22, the liquid cooling condenser 63, the heater core 21, a third passage of the first five-way valve 61, the power battery 31, and a first passage of the second five-way valve 62 are sequentially communicated to form a battery heating loop for heat exchange with the heating loop and heating the power battery 31. In the embodiment, the second passage of the first five-way valve 61 is a B-C end connection passage, the third passage is an A-D end connection passage, and the first passage of the second five-way valve 62 is a C-D end connection passage. In the embodiment, the power battery 31 and the heater core 21 are connected in series, and can exchange heat with the heating loop through the liquid cooling condenser 63 and simultaneously heat the power battery 31 and the passenger cabin.

[0051] Referring to Figure 2 and Figure 5 , Figure 5 is Figure 1The schematic diagram of the principle of the electric drive preheating circuit in the embodiment. The electric drive electric control assembly 40 comprises 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 heater water pump 22, the liquid cooling condenser 63, the heater 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 sequentially connected to form an electric drive preheating circuit, which is used for heat exchange with the heating circuit and preheats the electric drive assembly 41. In the embodiment, the second passage of the second five-way valve 62 is a B-C end connecting passage, and the third passage is an A-D end connecting passage. In the embodiment, the electric drive assembly 41, the power battery 31, and the heater core 21 are connected in series, and can exchange heat with the heating circuit through the liquid cooling condenser 63 and simultaneously heat the electric drive assembly 41, the power battery 31, and the passenger compartment.

[0052] Please refer to Figure 2 and Figure 6 , Figure 6 is Figure 1 The schematic diagram of the principle of the battery heat exchange circuit in the embodiment. The battery heat exchange circuit comprises 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 connected in sequence, and is used for heat exchange with the refrigeration circuit and cooling the power battery 31. In the embodiment, the fourth passage of the first five-way valve 61 is a B-E end connecting passage.

[0053] Please refer to Figure 2 and Figure 3 In some embodiments, the automobile heat pump air conditioner management system further comprises a radiator 65. The electric drive electric control assembly 40 is selectively connected with 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 realize the heat dissipation function of the electric drive assembly 41. The electric drive heat exchange circuit comprises 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 connected in sequence. In the embodiment, the fourth passage of the second five-way valve 62 is a B-E end connecting 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 cabin cooling circuit. The compressor 11, the outdoor heat exchanger assembly 12, and the gas-liquid separator 14 are selectively communicated with the battery cooler 64, the evaporator 13, or the liquid-cooled condenser 63 through the valve assembly 50 to form the battery cooling circuit, the passenger cabin cooling circuit, or the heating circuit. It should be noted that the outdoor heat exchanger assembly 12 cools the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 11 into high-pressure and low-temperature liquid refrigerant in the refrigeration circuit; and changes the refrigerant from misty liquid to gas to absorb the heat outside the vehicle in the heating circuit.

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

[0056] Please refer to Figure 7 , Figure 7 is Figure 1 The principle schematic diagram of the heating circuit in the embodiment. The heating circuit includes the compressor 11, the fourth expansion valve 59, the liquid-cooled condenser 63, the second one-way valve 54, the first expansion valve 56, the outdoor heat exchanger assembly 12, the second stop valve 52, and the gas-liquid separator 14 in sequence 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 cooling liquid in the passenger cabin heating circuit, the battery heating circuit, or the electric drive preheating circuit through the liquid-cooled condenser 63 to heat the passenger cabin and / or the power components of the vehicle. For example, in the single passenger cabin heating mode, the passenger cabin heating circuit is communicated, and the heat exchanged with the liquid-cooled condenser 63 is transferred to the heater core 21 by the operation of the water pump 22, and the heat is transferred to the passenger cabin by the air blower to heat the passenger cabin. Alternatively, the outdoor heat exchanger assembly 12 can also heat the passenger cabin in combination with 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 the waste heat from the electric drive assembly 41. In this way, the heat energy recovery can be further improved.

[0057] The present application selectively communicates to form different circuits through the first five-way valve 61 and the second five-way valve 62 to realize different thermal management modes, improve the combination degree of the heat pump assembly 10, the battery pack assembly 30, the passenger cabin assembly 20, and the electric drive electronic control assembly 40, save the cost of the whole vehicle, and also reduce the energy consumption of the whole vehicle, ensure that the electric drive assembly 41 and the power battery 31 operate in a suitable temperature range, and improve the endurance capability.

[0058] Please refer to Figure 8 , Figure 8 isFigure 1 The schematic diagram of the battery cooling circuit in the embodiment. The battery cooling circuit comprises, in sequence along the flow direction of the refrigerant, the compressor 11, the first stop valve 51, the outdoor heat exchanger assembly 12, the first check valve 53, the second expansion valve 57, the battery cooler 64, and the gas-liquid separator 14. The battery cooling circuit is used for cooling the power battery 31. Exemplarily, in the single-battery refrigeration, the power battery 31 is compressed by the compressor 11, cooled by the outdoor heat exchanger assembly 12, throttled and depressurized by the second expansion valve 57, and finally exchanges heat with the battery heat exchange circuit in the battery cooler 64 to return to the compressor 11. In this way, the heat of the power battery 31 is taken to the outdoor heat exchanger assembly 12 to be dissipated, and the power battery 31 is cooled.

[0059] Please refer to Figure 9 , Figure 9 is Figure 1 The schematic diagram of the passenger compartment cooling circuit in the embodiment. The passenger compartment cooling circuit comprises, in sequence along the flow direction of the refrigerant, the compressor 11, the first stop valve 51, the outdoor heat exchanger assembly 12, the first check valve 53, the third expansion valve 58, the evaporator 13, the third check valve 55, and the gas-liquid separator 14. The passenger compartment cooling circuit is used for cooling the passenger compartment. Exemplarily, in the single-passenger-compartment refrigeration, the passenger compartment is compressed by the compressor 11, cooled by the outdoor heat exchanger assembly 12, throttled and depressurized by the third expansion valve 58, and finally absorbs the heat of the passenger compartment in the evaporator 13 to return to the compressor 11. In this way, the heat of the passenger compartment is taken to the outdoor heat exchanger assembly 12 to be dissipated, and the passenger compartment is cooled.

[0060] Please refer to Figure 8 and Figure 9 It can be understood that, when the passenger compartment and the power battery 31 need to be cooled at the same time, the single-passenger-compartment refrigeration and the single-battery refrigeration can be combined, i.e., the first stop valve 51 and the battery water pump 32 are opened, the second expansion valve 57 and the third expansion valve 58 are used to throttle and adjust the battery cooling circuit and the passenger compartment cooling circuit respectively, and other valves and water pumps are closed.

[0061] Please refer to Figure 1In some embodiments, the automobile heat pump air conditioning management system further comprises 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 in the heating circuit and the refrigeration circuit. In the heating circuit, the first pressure temperature sensor 71 is in communication with the liquid outlet end of the second one-way valve 54. In the refrigeration circuit, the first pressure temperature sensor 71 is in communication with the liquid outlet end of the first one-way valve 53. The first temperature sensor 74 is connected to the liquid outlet end 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 end and the liquid outlet end 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 therethrough. The first temperature sensor 74 can detect the pressure of the refrigerant flowing therethrough.

[0062] Please continue to refer to Figure 1 In some embodiments, the automobile heat pump air conditioning management system further comprises 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 cooling liquid flowing therethrough.

[0063] It can be understood that the above-mentioned sensors can be connected to the vehicle computer or an independent controller, so as to adjust the circuit operating state in real time according to the environmental temperature and the operating parameters of the sensors, and assist the circuit to realize heating, refrigeration and other functions.

[0064] In some embodiments, the automobile heat pump air conditioning management system further comprises a first expansion water tank 66 and a second expansion water tank 67. The first expansion water tank 66 is in communication with the passenger cabin assembly 20. The second expansion water tank 67 is in communication with the battery pack assembly 30 and the electric drive electronic control assembly 40, respectively.

[0065] In some embodiments, a control method of 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] Obtaining the vehicle state, the vehicle state including the temperature of the battery pack assembly, the electric drive electronic control assembly, and the environmental temperature;

[0067] Selecting a thermal management mode based on the demand of the passenger cabin and the vehicle state, the thermal management mode including at least the passenger cabin heating mode, the battery heating mode, the electric drive preheating mode, and the refrigeration mode.

[0068] In the passenger cabin heating mode, the heating circuit is in communication with the passenger cabin heating circuit, and the battery heat exchange circuit is selectively in communication, so as to realize the separate heating of the passenger cabin.

[0069] In the battery heating mode, the heating circuit is communicated with the battery heating circuit, and the power battery and the passenger cabin can be heated at the same time.

[0070] In the electric drive preheating mode, the heating circuit is communicated with the electric drive preheating circuit, and the electric drive assembly, the power battery and the passenger cabin can be heated at the same time.

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

[0072] The above only describes some embodiments of the present application, and does not limit the protection scope of the present application, and any equivalent device or equivalent flow transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle heat pump air conditioning management system, characterized by, The automobile heat pump air conditioner management system comprises a heat pump assembly, a battery pack assembly, an electric drive electric control assembly, a passenger cabin assembly, a liquid cooling condenser, a battery cooler, a first five-way valve, a second five-way valve and a valve assembly, wherein, The heat pump assembly is selectively communicated with the liquid cooling condenser and the battery cooler through the valve assembly to form a heating circuit or a refrigeration circuit. The passenger cabin assembly, the battery pack assembly and the electric drive electric control assembly are selectively communicated through the first five-way valve and the second five-way valve to form a battery heat exchange circuit, a passenger cabin 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, and the passenger cabin heating circuit, the battery heating circuit or the electric drive preheating circuit exchanges heat with the heating circuit through the liquid cooling condenser. The passenger cabin assembly comprises a heater core and a heater water pump, the battery pack assembly comprises a power battery and a battery water pump, and the electric drive electric control assembly comprises an electric drive assembly and an electric drive water pump.

2. The automotive heat pump air conditioning management system of claim 1, wherein, The electric drive water pump, the electric drive assembly, a second passage of the second five-way valve, the battery water pump, a second passage of the first five-way valve, the heater water pump, the liquid cooling condenser, the heater core, a third passage of the first five-way valve, the power battery and a first passage of the second five-way valve are sequentially communicated to form the electric drive preheating circuit, which is used for heat exchange with the heating circuit and preheating of the electric drive assembly.

3. The automotive heat pump air conditioning management system of claim 2, wherein, The heater water pump, the liquid cooling condenser, the heater core and a first passage of the first five-way valve are sequentially communicated to form the passenger cabin heating circuit, which is used for heat exchange with the heating circuit and heating of the passenger cabin.

4. The automotive heat pump air conditioning management system of claim 3, wherein, The battery water pump, the second passage of the first five-way valve, the heater water pump, the liquid cooling 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 sequentially communicated to form the battery heating circuit, which is used for heat exchange with the heating circuit and heating of the power battery.

5. The automotive heat pump air conditioning management system according to any one of claims 1 to 4, characterized in that, The battery heat exchange circuit comprises a battery water pump, a fourth passage of the first five-way valve, a battery cooler, a power battery and a first passage of the second five-way valve which are sequentially communicated, and the battery heat exchange circuit is used for heat exchange with the refrigeration circuit and cooling of the power battery.

6. The automotive heat pump air conditioning management system according to any one of claims 1 to 4, characterized in that, The automobile heat pump air conditioner management system further comprises a radiator, and the electric drive electric control assembly is selectively communicated with 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 external air through the radiator.

7. The automotive heat pump air conditioning management system of claim 6, wherein, The heat pump assembly comprises a compressor, an outdoor heat exchanger assembly, an evaporator and a gas-liquid separator, the refrigeration circuit comprises a battery cooling circuit and a passenger cabin cooling circuit, and the compressor, the outdoor heat exchanger assembly and the gas-liquid separator are selectively communicated with the battery cooler, the evaporator or the liquid cooling condenser through the valve assembly to form the battery cooling circuit, the passenger cabin cooling circuit or the heating circuit. The valve assembly comprises 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 comprises, in sequence along a refrigerant flow direction, a compressor, a fourth expansion valve, a liquid cooling condenser, a second check valve, a first expansion valve, an outdoor heat exchanger assembly, a second stop valve, and a gas-liquid separator. The battery cooling circuit comprises, in sequence along a refrigerant flow direction, 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. The passenger cabin cooling circuit comprises, in sequence along a refrigerant flow direction, a compressor, a first stop valve, an outdoor heat exchanger assembly, a first check valve, a third expansion valve, an evaporator, a third check valve, and a gas-liquid separator.

8. The automotive heat pump air conditioning management system of claim 7, wherein, The automobile heat pump air conditioner management system further comprises: A first pressure and temperature sensor connected in the heating circuit and the refrigeration circuit, in the heating circuit, the first pressure and temperature sensor is in communication with the liquid outlet end of the second check valve, in the refrigeration circuit, the first pressure and temperature sensor is in communication with the liquid outlet end of the first check valve; A first temperature sensor connected with the liquid outlet end of the battery cooler in the refrigeration circuit; A second pressure and temperature sensor and a third pressure and temperature sensor connected with the liquid inlet end and the liquid outlet end of the compressor respectively.

9. The automotive heat pump air conditioning management system of claim 7, wherein, The automobile heat pump air conditioner management system further comprises: A first water temperature sensor connected between the electric drive water pump and the electric drive assembly; A second water temperature sensor connected between the liquid cooling condenser and the heating core.

10. The automotive heat pump air conditioning management system of claim 1, wherein, The automobile heat pump air conditioner management system further comprises a first expansion water tank and a second expansion water tank, the first expansion water tank is in communication with the passenger cabin assembly, and the second expansion water tank is in communication with the battery pack assembly and the electric drive electronic control assembly respectively.

11. A control method of an automotive heat pump air conditioning management system, characterized by, The automobile heat pump air conditioner management system according to any one of claims 1-10, comprising the following steps: Obtaining a vehicle state, the vehicle state comprising a temperature of the battery pack assembly, a temperature of the electric drive electronic control assembly, and an ambient temperature; Selecting a thermal management mode based on a demand of the passenger cabin and the vehicle state, the thermal management mode comprising at least a passenger cabin heating mode, a battery heating mode, an electric drive preheating mode, and a refrigeration mode. The automobile heat pump air conditioner management system according to any one of claims 1-10, comprising the following steps: Obtaining a vehicle state, the vehicle state comprising a temperature of the battery pack assembly, a temperature of the electric drive electronic control assembly, and an ambient temperature; Selecting a thermal management mode based on a demand of the passenger cabin and the vehicle state, the thermal management mode comprising at least a passenger cabin heating mode, a battery heating mode, an electric drive preheating mode, and a refrigeration mode.

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