Automotive integrated air conditioning system and new energy automobile

Abstract

The utility model provides a vehicle integrated air conditioning system and a new energy vehicle, and relates to the field of new energy vehicle air conditioners, the vehicle integrated air conditioning system comprises a refrigeration system, a first electronic expansion valve, a second electronic expansion valve, an electronic three-way valve, a cab air conditioning assembly, a heat exchanger and a battery temperature control system; an outlet of the refrigerating system and a first channel in the cab air conditioner assembly form a refrigerating loop through a first electronic expansion valve, and the outlet of the refrigerating system and a first channel of the heat exchanger form a loop through a second electronic expansion valve. An outlet of the second passage of the heat exchanger is connected with an inlet of the battery temperature control system; an outlet of the battery temperature control system is connected with an inlet of the electronic three-way valve; a first outlet of the electronic three-way valve is connected with an inlet of a second passage of the heat exchanger; a second outlet of the electronic three-way valve is connected with an inlet of the battery temperature control system. The air conditioning system can be used for solving the problems that an air conditioning system of an existing new energy automobile is complex in arrangement and large in occupied space.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle air conditioning, and in particular to an integrated vehicle air conditioning system and a new energy vehicle. Background Art

[0002] New energy vehicles are not only an innovation in transportation, but also an important change in many fields, including energy strategy, environmental protection, scientific and technological progress, and industrial structure adjustment. They have far-reaching significance for building a low-carbon society and achieving sustainable development goals. With the deepening of global commitments to emission reduction and the general improvement of environmental awareness, the development and prospects of new energy vehicles are showing an extremely positive trend.

[0003] At present, most new energy pure electric vehicles use independent battery water cooling units, which are independent of the cab air conditioning system. The two air conditioning systems have the disadvantages of complex layout, large system space, high component cost, and low economy. Therefore, the integrated structural design of the new energy vehicle air conditioning system and the efficient system control strategy design are of great significance to the cost reduction and economic improvement of new energy commercial vehicles.

[0004] In view of the above-mentioned defects, the utility model provides a vehicle integrated air-conditioning system and a new energy vehicle. Utility Model Content

[0005] The present application provides a vehicle integrated air-conditioning system and a new energy vehicle, which are used to solve the problem that the air-conditioning system of existing new energy vehicles has a complex layout and occupies a large space.

[0006] In a first aspect, the present application provides a vehicle integrated air conditioning system, including a refrigeration system, a first electronic expansion valve, a second electronic expansion valve, an electronic three-way valve, a cab air conditioning assembly, a heat exchanger and a battery temperature control system; wherein

[0007] The outlet of the refrigeration system is connected to the inlet of the first passage in the cab air conditioning assembly through the first electronic expansion valve, the outlet of the first passage in the cab air conditioning assembly is connected to the inlet of the refrigeration system, the outlet of the refrigeration system is also connected to the inlet of the first passage of the heat exchanger through the second electronic expansion valve, the outlet of the first passage of the heat exchanger is connected to the inlet of the refrigeration system;

[0008] The outlet of the second passage of the heat exchanger is connected to the inlet of the battery temperature control system, and the outlet of the battery temperature control system is connected to the inlet of the electronic three-way valve; the first outlet of the electronic three-way valve is connected to the inlet of the second passage of the heat exchanger; the second outlet of the electronic three-way valve is connected to the inlet of the battery temperature control system; when the first outlet of the electronic three-way valve is opened, the battery temperature control system can exchange heat with the refrigeration system through the heat exchanger.

[0009] Furthermore, the battery temperature control system includes a power battery, a second water pump and a second heating device; wherein

[0010] The outlet of the second passage of the heat exchanger and the second outlet of the electronic three-way valve are respectively connected to the inlet of the second water pump, and the outlet of the second water pump is connected to the water inlet of the power battery through the second heating device; the water outlet of the power battery is connected to the inlet of the electronic three-way valve.

[0011] Furthermore, the refrigeration system includes a compressor, a second temperature and pressure sensor, and a condensation and heat dissipation system;

[0012] The inlet of the compressor is connected to the outlet of the first passage in the cab air conditioning assembly, and the inlet of the compressor is also connected to the outlet of the first passage of the heat exchanger;

[0013] The outlet of the compressor is connected to the inlet of the condensation and heat dissipation system, the outlet of the condensation and heat dissipation system is connected to the first electronic expansion valve, and the outlet of the condensation and heat dissipation system is also connected to the second electronic expansion valve;

[0014] Furthermore, the system also includes a heating system, which includes a first heating device and a first water pump. The outlet of the second passage of the cab air-conditioning assembly is connected to the inlet of the first water pump, and the outlet of the first water pump is connected to the inlet of the second passage of the cab air-conditioning assembly through the first heating device.

[0015] Further, the system further includes a first temperature and pressure sensor; the first temperature and pressure sensor is arranged at the first outlet of the first passage in the cab air conditioning assembly, and is used to measure a first temperature and a first pressure at the first outlet of the first passage in the cab air conditioning assembly, the first temperature and the first pressure are used to determine the superheat of the outlet of the cab air conditioning assembly, and the first temperature and the first pressure are also used to determine the opening of the first electronic expansion valve;

[0016] Furthermore, the second temperature and pressure sensor is used to measure a second temperature and a second pressure at the compressor outlet, and the second temperature and the second pressure are used to determine the fan speed of the condensation and heat dissipation system.

[0017] Furthermore, the system also includes a third temperature and pressure sensor; the third temperature and pressure sensor is arranged at the first outlet of the first passage in the heat exchanger, and is used to measure a third temperature and a third pressure at the first outlet of the first passage in the heat exchanger, and the third temperature and the third pressure are used to determine the superheat of the heat exchanger outlet, and the third temperature and the third pressure are also used to determine the opening of the second electronic expansion valve.

[0018] Furthermore, the cab air conditioning assembly further includes a third temperature sensor, which is used to measure the temperature inside the cab, and the temperature inside the cab is used to determine the rotation speed of the compressor or the power of the first heating device;

[0019] Furthermore, the battery temperature control system also includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged at the water inlet of the power battery, and is used to measure a fourth temperature at the water inlet of the power battery; the second temperature sensor is arranged at the water outlet of the power battery, and is used to measure a fifth temperature at the water outlet of the power battery, and the fourth temperature and the fifth temperature are used to determine the power of the second heating device.

[0020] In a second aspect, the present application also provides a new energy vehicle, including the above-mentioned vehicle integrated air-conditioning system.

[0021] This embodiment provides a vehicle integrated air conditioning system and a new energy vehicle, including a refrigeration system, a first electronic expansion valve, a second electronic expansion valve, an electronic three-way valve, a cab air conditioning assembly, a heat exchanger and a battery temperature control system; wherein the refrigeration system forms a loop with the cab air conditioning assembly through the first electronic expansion valve, the refrigeration system also forms a loop with the first passage of the heat exchanger through the second electronic expansion valve, the second passage of the heat exchanger forms a loop with the battery temperature control system through the first outlet of the electronic three-way valve, and the battery temperature control system also forms a self-loop through the second outlet of the electronic three-way valve. The following technical effects can be achieved: the present application has a simple structure, occupies less space, and reduces the cost and weight of new energy vehicles; it can meet the cooling and heating requirements of the cab and battery environment, and meet customers' different requirements for the temperature of the vehicle space under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of a vehicle integrated air conditioning system provided by the embodiment of the utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of a vehicle integrated air conditioning system provided by the embodiment of the utility model. Figure 2 .

[0025] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0026] Description of reference numerals:

[0027] 110-heat exchanger; 120-cabin air conditioning assembly; 130-heating system; 140-refrigeration system; 150-battery temperature control system; 160-electronic three-way valve; 170-first electronic expansion valve; 180-second electronic expansion valve;

[0028] 121 - a third temperature sensor;

[0029] 131 - a first water pump; 132 - a first heating device;

[0030] 141- compressor; 142- second temperature and pressure sensor; 143- condensation and heat dissipation system;

[0031] 151 - power battery; 152 - second water pump; 153 - second heating device; 154 - first temperature sensor; 155 - second temperature sensor;

[0032] 201 - a first temperature and pressure sensor; 202 - a third temperature and pressure sensor. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the description of the present application, it should be understood that the terms used include "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. to indicate orientation or positional relationships. They are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the equipment or method of the present application. They are not used to indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In the specification and claims of the present application and the above-mentioned drawings, the terms "first", "second", and "third" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0037] In addition, the described terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or maintenance tool that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but also includes other steps or units not explicitly listed or inherent to these processes, methods, products, or maintenance tools.

[0038] The following is a detailed introduction to an integrated vehicle air-conditioning system and a new energy vehicle provided in an embodiment of the present application in conjunction with the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the structure of a vehicle integrated air conditioning system provided by the embodiment of the utility model. Figure 1 ;like Figure 1 As shown, the system includes a refrigeration system 140, a first electronic expansion valve 170, a second electronic expansion valve 180, an electronic three-way valve 160, a cab air conditioning assembly 120, a heat exchanger 110 and a battery temperature control system 150; wherein

[0040] The outlet of the refrigeration system 140 is connected to the inlet of the first passage in the cab air conditioning assembly 120 through the first electronic expansion valve 170, and the outlet of the first passage in the cab air conditioning assembly 120 is connected to the inlet of the refrigeration system 140. The outlet of the refrigeration system 140 is also connected to the inlet of the first passage of the heat exchanger 110 through the second electronic expansion valve 180, and the outlet of the first passage of the heat exchanger 110 is connected to the inlet of the refrigeration system 140;

[0041] The outlet of the second passage of the heat exchanger 110 is connected to the inlet of the battery temperature control system 150, and the outlet of the battery temperature control system 150 is connected to the inlet of the electronic three-way valve 160; the first outlet of the electronic three-way valve 160 is connected to the inlet of the second passage of the heat exchanger 110; the second outlet of the electronic three-way valve 160 is connected to the inlet of the battery temperature control system 150; when the first outlet of the electronic three-way valve 160 is opened, the battery temperature control system 150 can exchange heat with the refrigeration system 140 through the heat exchanger 110.

[0042] Specifically, the refrigeration system 140 includes a compressor 141, a condenser, an evaporator, etc., which are used to realize the refrigeration function by evaporating, compressing, condensing, circulating, and other steps of the refrigerant.

[0043] Specifically, the heating system 130 is an air-heating system, which heats the air through a water pump and exchanges temperature with the air, and circulates the overheated air into the cab;

[0044] Specifically, the battery temperature control system 150 is a heating system for the power battery 151 of the new energy vehicle to cope with the problem of battery performance degradation in cold weather. The battery temperature control system 150 adopted in this embodiment is a liquid heating system: by arranging liquid circulation pipes inside or around the battery pack, the coolant is heated by a heating element (such as a PTC heater), and then the hot coolant is guided to the inside of the battery pack through a circulation pump to indirectly heat the battery cells.

[0045] Specifically, when the first electronic expansion valve 170 is opened and the second electronic expansion valve 180 is closed, the refrigeration system 140 cools the cab through the cab air conditioning assembly 120;

[0046] Specifically, when the first electronic expansion valve 170 is closed and the second electronic expansion valve 180 is opened, the refrigeration system 140 cools the power battery 151 through the first outlet of the electronic three-way valve 160 and the heat exchanger 110 exchanges heat with the battery temperature control system 150 .

[0047] Specifically, when the first electronic expansion valve 170 and the second electronic expansion valve 180 are opened at the same time, the cooling of the cab and the cooling of the power battery 151 can be achieved at the same time.

[0048] Specifically, when the first outlet of the electronic three-way valve 160 is closed and the second outlet is opened, the battery temperature control system 150 forms a self-loop, so as to heat the power battery 151 .

[0049] Specifically, the refrigeration system 140 and the battery temperature control system 150 both achieve exchange through a coolant circuit.

[0050] The embodiment of the present application provides a vehicle integrated air conditioning system, including a refrigeration system 140, a first electronic expansion valve 170, a second electronic expansion valve 180, an electronic three-way valve 160, a cab air conditioning assembly 120, a heat exchanger 110 and a battery temperature control system 150; wherein the refrigeration system 140 forms a loop with the cab air conditioning assembly 120 through the first electronic expansion valve 170, the refrigeration system 140 also forms a loop with the first passage of the heat exchanger 110 through the second electronic expansion valve 180, the second passage of the heat exchanger 110 forms a loop with the battery temperature control system 150 through the first outlet of the electronic three-way valve 160, and the battery temperature control system 150 also forms a self-loop through the second outlet of the electronic three-way valve 160. The following technical effects can be achieved:

[0051] The embodiments of the present application have a simple structure and occupy a small space, thereby reducing the cost and weight of new energy vehicles. They can meet the cooling and heating requirements of the cab and battery environment, and meet the different requirements of customers for the vehicle space temperature under different working conditions.

[0052] Figure 2 This is a schematic diagram of the structure of a vehicle integrated air conditioning system provided by an embodiment of the utility model. Figure 2 ,like Figure 2 As shown; the system includes a refrigeration system 140, a first electronic expansion valve 170, a second electronic expansion valve 180, an electronic three-way valve 160, a cab air conditioning assembly 120, a heat exchanger 110, a heating system 130 and a battery temperature control system 150, a first temperature and pressure sensor 201 and a third temperature and pressure sensor 202; wherein

[0053] The outlet of the refrigeration system 140 is connected to the inlet of the first passage in the cab air conditioning assembly 120 through the first electronic expansion valve 170, and the outlet of the first passage in the cab air conditioning assembly 120 is connected to the inlet of the refrigeration system 140. The outlet of the refrigeration system 140 is also connected to the inlet of the first passage of the heat exchanger 110 through the second electronic expansion valve 180, and the outlet of the first passage of the heat exchanger 110 is connected to the inlet of the refrigeration system 140;

[0054] The outlet of the second passage of the heat exchanger 110 is connected to the inlet of the battery temperature control system 150, and the outlet of the battery temperature control system 150 is connected to the inlet of the electronic three-way valve 160; the first outlet of the electronic three-way valve 160 is connected to the inlet of the second passage of the heat exchanger 110; the second outlet of the electronic three-way valve 160 is connected to the inlet of the battery temperature control system 150;

[0055] Specifically, the heating system 130 and the cab air conditioning assembly 120 form a loop through the second passage in the cab air conditioning assembly 120, and the heating system 130 is used to heat the cab;

[0056] Specifically, the driver can select cooling and heating, set the target temperature, etc. through the cab air conditioning assembly 120; the cab air conditioning assembly 120 also includes a third temperature sensor 121 for measuring the temperature in the cab.

[0057] Specifically, when the first outlet of the electronic three-way valve 160 is opened, the battery temperature control system 150 turns off the heating element, and the heat exchanger 110 and the refrigeration system 140 can exchange heat through the coolant to achieve indirect cooling of the battery.

[0058] The structure of the refrigeration system 140 is specifically introduced below:

[0059] The refrigeration system 140 includes a compressor 141, a second temperature and pressure sensor 142, and a condensation and heat dissipation system 143; the inlet of the compressor 141 is connected to the outlet of the first passage in the cab air conditioning assembly 120, and the inlet of the compressor 141 is also connected to the outlet of the first passage of the heat exchanger 110; the outlet of the compressor 141 is connected to the inlet of the condensation and heat dissipation system 143, the outlet of the condensation and heat dissipation system 143 is connected to the first electronic expansion valve 170, and the outlet of the condensation and heat dissipation system 143 is also connected to the second electronic expansion valve 180;

[0060] Further, the first temperature and pressure sensor 201 is arranged at the first outlet of the first passage in the cab air conditioning assembly 120, and is used to measure the first temperature and the first pressure at the first outlet of the first passage in the cab air conditioning assembly 120, and the first temperature and the first pressure are used to determine the superheat degree of the outlet of the cab air conditioning assembly 120, and the first temperature and the first pressure are also used to determine the opening degree of the first electronic expansion valve 170;

[0061] The third temperature and pressure sensor 202 is arranged at the first outlet of the first passage in the heat exchanger 110, and is used to measure the third temperature and the third pressure at the first outlet of the first passage in the heat exchanger 110. The third temperature and the third pressure are used to determine the superheat at the outlet of the heat exchanger 110. The third temperature and the third pressure are also used to determine the opening degree of the second electronic expansion valve 180.

[0062] Furthermore, the compressor 141 is an electric compressor, which uses an electric motor as a driving force. In automobile air-conditioning systems, electric compressors are widely used, especially in new energy vehicles (such as pure electric vehicles, plug-in hybrid vehicles, etc.).

[0063] The structure of the battery temperature control system 150 is specifically introduced below:

[0064] Specifically, the battery temperature control system 150 includes a power battery 151, a second water pump 152, a second heating device 153, a first temperature sensor 154 and a second temperature sensor 155;

[0065] The outlet of the second passage of the heat exchanger 110 and the second outlet of the electronic three-way valve 160 are respectively connected to the inlet of the second water pump 152. The outlet of the second water pump 152 is connected to the water inlet of the power battery 151 through the second heating device 153; the water outlet of the power battery 151 is connected to the inlet of the electronic three-way valve 160.

[0066] The first temperature sensor 154 is arranged at the water inlet of the power battery 151, and is used to measure the fourth temperature at the water inlet of the power battery 151; the second temperature sensor 155 is arranged at the water outlet of the power battery 151, and is used to measure the fifth temperature at the water outlet of the power battery 151. The fourth temperature and the fifth temperature are used to determine the power of the second heating device 153.

[0067] The structure of the battery temperature control system 150 is specifically introduced below:

[0068] The system also includes a heating system 130, which includes a first heating device 132 and a first water pump 131. The outlet of the second passage of the cab air-conditioning assembly 120 is connected to the inlet of the first water pump 131, and the outlet of the first water pump 131 is connected to the inlet of the second passage of the cab air-conditioning assembly 120 through the first heating device 132.

[0069] Specifically, the first heating device 132 and the second heating device 153 use a PTC heater (Positive Temperature Coefficient), which is a heating device that uses a ceramic semiconductor material with a positive temperature coefficient as a heating element. The resistance value of the PTC material will increase significantly with the increase of temperature. This characteristic enables it to self-limit the temperature at a certain temperature, that is, when the preset temperature is reached, the power consumption is reduced due to the increase of its own resistance, thereby achieving a constant temperature effect.

[0070] Furthermore, the system provided by this embodiment can realize the following functions:

[0071] To realize the cooling of the cab: when the first electronic expansion valve 170 is opened and the second electronic expansion valve 180 is closed, the refrigeration system 140 performs cooling, and the cooling function of the cab is realized through the air outlet of the cab air conditioning assembly 120 .

[0072] Specifically, when achieving refrigeration, the electronic fan is first turned on to adjust the speed, and then the first electronic expansion valve 170 is turned on, and the opening degree of the first electronic expansion valve 170 is determined according to the first temperature and pressure sensor 201; finally, the compressor 141 is turned on after a delay of T1 to determine the speed of the compressor 141.

[0073] Specifically, the speed of the electronic fan can be adjusted according to the second pressure (refrigerant pressure) PH collected by the second temperature and pressure sensor 142. When PH < the first threshold, the fan is turned on at the minimum speed. When PH > the second threshold, the fan is turned on at the maximum speed. When the first threshold ≤ PH ≤ the second threshold, the fan speed is calibrated according to the heat dissipation.

[0074] Specifically, when implementing cooling, the first pressure stabilization sensor is used to measure the first temperature and the first pressure of the air outlet of the cab air conditioning assembly, determine the superheat of the cab air conditioning assembly 120 according to the first temperature and the first pressure, and perform PID adjustment according to the difference between the actual value and the target value of the superheat of the cab air conditioning assembly 120;

[0075] Specifically, superheat is an important parameter in refrigeration or air conditioning systems. It refers to the difference between the actual temperature of the refrigerant and the saturation temperature at the same pressure, reflecting whether the refrigerant is fully evaporated and the stability of the system operation. PID regulation (Proportional-Integral-Derivative control) is an automatic control algorithm widely used in the field of industrial control, which can be used to accurately adjust process parameters such as superheat.

[0076] Specifically, the speed of the air conditioning compressor 141 can be adjusted according to the air conditioning set temperature and the current cabin temperature T in The difference T set -T in And the evaporator temperature T evap The speed N of the electric compressor 141 is determined according to the refrigeration capacity calibration method. comp2 .

[0077] Realizing power battery cooling: According to the system provided in this embodiment, when the first outlet of the electronic three-way valve 160 is opened, the second outlet is closed, the first electronic expansion valve 170 is closed, and the second electronic expansion valve 180 is opened, the power battery cooling function can be realized;

[0078] Specifically, when the power battery cooling function is realized, the fan speed is first adjusted. The adjustment method is similar to the above-mentioned fan adjustment method and will not be described in detail here. Then, the second electronic expansion valve 180 is opened, and the opening degree of the second electronic expansion valve 180 is determined according to the superheat degree of the outlet of the first passage of the heat exchanger 110. Finally, the compressor 141 is started with a delay of T2. The controller adjusts the speed of the fan at the target inlet water temperature T of the power battery 151. Batin 、Current inlet water temperature T Win The difference T Batin -T Win , and the current inlet water temperature T Watin With outlet water temperature T Watout The difference T Watin-T Watout The speed N of the electric compressor 141 is determined according to the refrigeration capacity calibration method. comp2 .

[0079] Specifically, the method for determining the opening of the second electronic expansion valve 180 is similar to the method for determining the opening of the first electronic expansion valve 170, and will not be repeated here. The superheat at the outlet of the first passage of the heat exchanger 110 is obtained based on the third temperature and the third pressure.

[0080] Simultaneous cooling of the cab and the power battery: According to the system provided in this embodiment, when the first outlet of the electronic three-way valve 160 is opened, the second outlet is closed, and the first electronic expansion valve 170 and the second electronic expansion valve 180 are opened, the power battery cooling function can be achieved;

[0081] Specifically, the method for simultaneous cooling includes: firstly adjusting the fan speed; then opening the second electronic expansion valve 180, the first electronic expansion valve 170 and the first outlet of the electronic three-way valve 160; obtaining the superheat of the outlet of the battery heat exchanger 110 and the superheat of the cab integrated air conditioner, performing PID adjustment, and realizing efficient distribution of the refrigerant by adjusting the opening of the two expansion valves; delaying the time T3 to start the total speed demand N=N of the electric air conditioner compressor 141 comp1 +N comp2 .

[0082] To achieve cab heating: start the first water pump 131, delay T4 time to start the first heating device 132, and the controller sets the temperature T set 、Current indoor temperature T in The difference T set -T in The power P of the first heating device 132 is determined according to the heating calibration method. ptc1 .

[0083] To achieve power battery heating: turn on the second water pump 152, connect the electronic three-way valve 160 to the second outlet, delay T5 time to turn on the second heating device 153, and the controller sets the power battery 151 to the target temperature T Batset 、Current battery temperature T Batact The difference T Batset -T Batact The parameters such as φ and φ are input, and the power P of the second heating device 153 is determined according to the heating capacity calibration method. ptc2 .

[0084] The vehicle integrated air conditioning system provided by the utility model can achieve the following technical effects:

[0085] The embodiment of the present application utilizes a single compressor and a single condensing and cooling system structure to achieve integrated and efficient thermal management integration of power battery cooling and heating, vehicle air conditioning and heating systems, improve the environmental adaptability of the vehicle, reduce costs, reduce the overall weight and volume of the device, and achieve improved vehicle economy of the electric vehicle.

[0086] The embodiment of the present application adopts a dual electronic expansion valve, and a temperature and pressure sensor (a first temperature and pressure sensor 201 and a third temperature and pressure sensor 202) is configured on the low-pressure side, which can accurately adjust the refrigerant flow of the battery cooling system and the cab air conditioning system, reduce temperature fluctuations, improve cab comfort and battery side temperature control accuracy;

[0087] The embodiments of the present application can realize the power battery cooling function, the cab cooling function, the simultaneous cooling of the cab and the power battery, the cab heating and the power battery heating functions according to different heat dissipation demand working conditions. It has a simple structure and occupies a small space. It can meet the cooling and heating needs of the cab and the battery environment, meet the different needs of customers for the vehicle space temperature under different working conditions, and reduce the cost and weight of new energy vehicles.

[0088] The embodiment of the utility model also provides a new energy vehicle, including the above-mentioned vehicle integrated air conditioning system. Its principle and technical effect are the same as those of the above-mentioned vehicle integrated air conditioning system, and will not be described in detail here.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A vehicle integrated air conditioning system, characterized in that: It includes a refrigeration system, a first electronic expansion valve, a second electronic expansion valve, an electronic three-way valve, a cab air conditioning assembly, a heat exchanger and a battery temperature control system; in The outlet of the refrigeration system is connected to the inlet of the first passage in the cab air conditioning assembly through the first electronic expansion valve, the outlet of the first passage in the cab air conditioning assembly is connected to the inlet of the refrigeration system, the outlet of the refrigeration system is also connected to the inlet of the first passage of the heat exchanger through the second electronic expansion valve, the outlet of the first passage of the heat exchanger is connected to the inlet of the refrigeration system; The outlet of the second passage of the heat exchanger is connected to the inlet of the battery temperature control system, and the outlet of the battery temperature control system is connected to the inlet of the electronic three-way valve; the first outlet of the electronic three-way valve is connected to the inlet of the second passage of the heat exchanger; the second outlet of the electronic three-way valve is connected to the inlet of the battery temperature control system; when the first outlet of the electronic three-way valve is opened, the battery temperature control system can exchange heat with the refrigeration system through the heat exchanger.

2. The system according to claim 1, characterized in that The battery temperature control system includes a power battery, a second water pump and a second heating device; wherein The outlet of the second passage of the heat exchanger and the second outlet of the electronic three-way valve are respectively connected to the inlet of the second water pump, and the outlet of the second water pump is connected to the water inlet of the power battery through the second heating device; the water outlet of the power battery is connected to the inlet of the electronic three-way valve.

3. The system according to claim 1, characterized in that The refrigeration system includes a compressor, a second temperature and pressure sensor, and a condensation and heat dissipation system; The inlet of the compressor is connected to the outlet of the first passage in the cab air conditioning assembly, and the inlet of the compressor is also connected to the outlet of the first passage of the heat exchanger; The outlet of the compressor is connected to the inlet of the condensation and heat dissipation system, the outlet of the condensation and heat dissipation system is connected to the first electronic expansion valve, and the outlet of the condensation and heat dissipation system is also connected to the second electronic expansion valve.

4. The system according to claim 1, characterized in that The system also includes a heating system, which includes a first heating device and a first water pump. The outlet of the second passage of the cab air-conditioning assembly is connected to the inlet of the first water pump, and the outlet of the first water pump is connected to the inlet of the second passage of the cab air-conditioning assembly through the first heating device.

5. The system according to claim 1, characterized in that The system also includes a first temperature and pressure sensor; the first temperature and pressure sensor is arranged at the first outlet of the first passage in the cab air-conditioning assembly, and is used to measure a first temperature and a first pressure at the first outlet of the first passage in the cab air-conditioning assembly, the first temperature and the first pressure are used to determine the superheat of the outlet of the cab air-conditioning assembly, and the first temperature and the first pressure are also used to determine the opening of the first electronic expansion valve.

6. The system according to claim 3, characterized in that The second temperature and pressure sensor is used to measure a second temperature and a second pressure at the compressor outlet, and the second temperature and the second pressure are used to determine the fan speed of the condensation and heat dissipation system.

7. The system according to claim 1, characterized in that The system also includes a third temperature and pressure sensor; the third temperature and pressure sensor is arranged at the first outlet of the first passage in the heat exchanger, and is used to measure a third temperature and a third pressure at the first outlet of the first passage in the heat exchanger, and the third temperature and the third pressure are used to determine the superheat of the heat exchanger outlet, and the third temperature and the third pressure are also used to determine the opening of the second electronic expansion valve.

8. The system according to claim 3, characterized in that The cab air conditioning assembly further includes a third temperature sensor, which is used to measure the temperature inside the cab, and the temperature inside the cab is used to determine the rotation speed of the compressor.

9. The system according to claim 4, characterized in that The cab air conditioning assembly further includes a third temperature sensor, which is used to measure the temperature inside the cab, and the temperature inside the cab is used to determine the power of the first heating device.

10. The system according to claim 2, characterized in that The battery temperature control system further includes a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged at the water inlet of the power battery and is used to measure a fourth temperature at the water inlet of the power battery; The second temperature sensor is arranged at the water outlet of the power battery, and is used to measure a fifth temperature at the water outlet of the power battery. The fourth temperature and the fifth temperature are used to determine the power of the second heating device.

11. A new energy vehicle, characterized in that: The system comprising any one of claims 1-10.

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