Integrated whole vehicle thermal management equipment

Abstract

The utility model relates to an integrated whole vehicle thermal management device which comprises a structural box body. A sensor unit and an execution unit are arranged on the structural box body; the execution unit comprises a circulating waterway unit and a circulating refrigerant unit; a water-fluorine heat exchanger is arranged between the circulating waterway unit and the circulating refrigerant unit for heat exchange; the device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to an integrated vehicle thermal management device, in the field of new energy vehicles, and in particular to an integrated and modular vehicle thermal management system and a control method thereof applied to pure electric commercial vehicles. Background Art

[0002] A pure electric vehicle is one that uses an onboard power source to propel its wheels. Unlike traditional internal combustion engine vehicles, pure electric vehicles lack internal combustion engine fuel and instead utilize a battery. The battery, acting as an onboard energy storage system, provides electrical energy to the power motor and also stores electrical energy fed back from the motor. Traditional internal combustion engine vehicles typically heat the cab using waste heat from the engine. This involves directing engine coolant to the cab's water heater, which then flows through the air conditioning blower to provide warm air for the driver. Cabin cooling utilizes the engine's onboard mechanical air conditioning compressor to provide low-temperature refrigerant to the evaporator, which then flows through the air conditioning blower to provide cool air for the cab.

[0003] Compared to traditional internal combustion engine vehicles, pure electric vehicles lack an engine. Their cabin heaters lack a hot water source, and their mechanical air conditioning compressors lack a power source, rendering conventional cabin heating and cooling systems inoperable. Furthermore, the optimal operating temperature for batteries is between 20-30°C. However, due to factors such as ambient temperature and internal temperature rise during charging and discharging, the battery temperature may fall below this optimal operating temperature, necessitating battery heating or cooling. Conventional pure electric vehicles use PTC heaters for cabin heating and electric air conditioning compressors for cabin cooling. Batteries are typically cooled using natural cooling, forced liquid cooling, or a separate air conditioning compressor, with heating provided by an internal PTC heating film. Under conventional solutions, direct use of the PTC heater in the cabin results in poor heating uniformity due to the influence of the specific heat capacity of air, and the routing of high-voltage wiring within the cabin is relatively unsafe. Conventional PTC heating films for battery heating suffer from relatively poor reliability and large heating temperature variations. Natural cooling, forced liquid cooling, or a separate air conditioning compressor often suffer from low cooling efficiency and high system costs. Utility Model Content

[0004] In response to the problems of poor safety, low integration and low efficiency of conventional pure electric vehicle thermal management systems, the utility model has a modular, integrated, high-efficiency and high-safety vehicle-level thermal integration system, which can realize cab heating and cooling, and battery heating and cooling. It has the characteristics of high integration, good safety, compact structure and good processability, and is particularly suitable for pure electric trucks, buses and other vehicles.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is:

[0006] An integrated vehicle thermal management device includes a structural box; an execution unit is provided on the structural box;

[0007] The execution unit includes a circulating water unit and a circulating refrigerant unit;

[0008] A water-fluorine heat exchanger is provided between the circulating water unit and the circulating refrigerant unit for heat exchange;

[0009] The circulating water circuit unit includes electric heating water heater, warm air water pump, battery water pump, three-way reversing valve at the water inlet end, three-way reversing valve at the water outlet end,

[0010] Battery water inlet pipe, battery water inlet tee to electric heating water heating pipe, battery water inlet tee to water-fluorine heat exchanger pipe, battery water outlet pipe, battery water outlet tee to electric heating water heating pipe, battery water outlet tee to water-fluorine heat exchanger pipe, cab heater outlet pipe, cab heater inlet pipe.

[0011] As a further improvement of the above technical solution:

[0012] One end of the battery water outlet pipe is connected to the V1 port of the three-way reversing valve at the water inlet end, and the other end is connected to the water outlet of the battery matched with the system; one end of the battery water inlet pipe is connected to the V1 port of the three-way reversing valve at the water outlet end, and the other end is connected to the water inlet of the battery matched with the system;

[0013] The V2 port and V3 port of the three-way reversing valve at the water inlet end are connected to the electric heating water heating pipe and the water fluorine heat exchanger pipe respectively through the battery water inlet tee.

[0014] The V2 port and V3 port of the three-way reversing valve at the water outlet are respectively connected to the electric heating water heating pipe and the water-fluorine heat exchanger pipe through the battery water outlet tee.

[0015] The circulating refrigerant unit includes condenser, compressor, on-off valve, electronic expansion valve,

[0016] Refrigerant pipe from compressor to condenser, refrigerant pipe from condenser to expansion valve, condenser to evaporator condenser pipe, refrigerant pipe from water-fluorine heat exchanger to compressor, and refrigerant pipe from evaporator to compressor;

[0017] The electronic expansion valve includes electronic expansion valve A and electronic expansion valve B;

[0018] The condenser is equipped with a cooling fan;

[0019] The outlet end of the compressor is connected to the condenser through the compressor to condenser refrigerant pipe; the condenser is connected to the electronic expansion valve A through the condenser to expansion valve refrigerant pipe; the on-off valve is connected in series on the condenser to evaporator condenser pipe; one end of the condenser to evaporator condenser pipe is connected to the condenser, and the other end is connected to the high-pressure side of the evaporator of the cab matched with the system; the electronic expansion valve A is connected to the water-fluorine heat exchanger; the water-fluorine heat exchanger to the compressor refrigerant pipe connects the water-fluorine heat exchanger and the air inlet of the compressor; one end of the evaporator to compressor refrigerant pipe is connected to the air inlet of the compressor, and the other end is connected to the low-pressure side of the cab evaporator matched with the system.

[0020] A sensor unit is provided in the structural box;

[0021] The sensor unit includes the water-fluorine heat exchanger high-pressure side sensor, the water-fluorine heat exchanger low-pressure side sensor, the battery water inlet sensor A, the battery water outlet sensor B, the heater outlet sensor, the evaporator high-pressure side sensor, the evaporator low-pressure side pressure and temperature sensor, the ambient temperature sensor, and the cab sensor;

[0022] The high-pressure side sensor of the water-fluorine heat exchanger is installed on the refrigerant pipe from the condenser to the expansion valve;

[0023] The low-pressure side sensor of the water-fluorine heat exchanger is installed on the refrigerant pipe from the water-fluorine heat exchanger to the compressor;

[0024] Battery water outlet sensor B, installed on the battery water outlet pipe;

[0025] Battery water inlet sensor A, installed on the battery water inlet pipe;

[0026] The heater outlet sensor is installed on the heater inlet pipe in the cab;

[0027] The evaporator high-pressure side sensor is installed on the condenser to evaporator condenser tube;

[0028] The evaporator low-pressure side pressure and temperature sensor is installed on the refrigerant pipe from the evaporator to the compressor;

[0029] Ambient temperature sensor, set on one side of the condenser;

[0030] The cab sensor is installed in the cab.

[0031] This new system uses a single, integrated, modular unit to achieve cab heating and cooling, as well as two-way battery temperature control. It offers advantages such as low cost, good processability, high integration, and flexible control.

[0032] The utility model has the advantages of reasonable design, low cost, durability, safety and reliability, simple operation, time and labor saving, money saving, compact structure and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a use structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0034] As Figure 1 An integrated whole vehicle thermal management device, comprising a structural box body; a sensor unit and an execution unit are arranged on the structural box body;

[0035] The execution unit comprises a circulating water circuit unit and a circulating refrigerant unit;

[0036] A water-fluorine heat exchanger is arranged between the circulating water circuit unit and the circulating refrigerant unit to perform heat exchange.

[0037] As a further improvement of the above technical solution:

[0038] The circulating water circuit unit comprises an electric heating water heater, a warm air water pump, a battery water pump, a water inlet end three-way reversing valve, a water outlet end three-way reversing valve,

[0039] A battery water inlet pipe, a battery water inlet three-way pipe to the electric heating water heater pipe, a battery water inlet three-way pipe to the water-fluorine heat exchanger pipe, a battery water outlet pipe, a battery water outlet three-way pipe to the electric heating water heater pipe, a battery water outlet three-way pipe to the water-fluorine heat exchanger pipe, a cab warm air outlet pipe, and a cab warm air inlet pipe;

[0040] One end of the battery water outlet pipe is connected to the V1 port of the water inlet end three-way reversing valve, and the other end is connected to the water outlet of the battery 112 matched with the system; one end of the battery water inlet pipe is connected to the V1 port of the water outlet end three-way reversing valve, and the other end is connected to the water inlet of the battery 112 matched with the system;

[0041] The V2 port and the V3 port of the water inlet end three-way reversing valve are connected to the electric heating water heater and the water-fluorine heat exchanger through the battery water inlet three-way pipe to the electric heating water heater pipe and the battery water inlet three-way pipe to the water-fluorine heat exchanger pipe, respectively;

[0042] The V2 port and the V3 port of the water outlet end three-way reversing valve are connected to the electric heating water heater and the water-fluorine heat exchanger through the battery water outlet three-way pipe to the electric heating water heater pipe and the battery water outlet three-way pipe to the water-fluorine heat exchanger pipe, respectively; the water inlet end three-way reversing valve and the water outlet end three-way reversing valve are both two-position three-way valves.

[0043] The circulating refrigerant unit comprises a condenser, a compressor, an on-off valve, an electronic expansion valve,

[0044] A compressor-to-condenser refrigerant pipe, a condenser-to-expansion valve refrigerant pipe, a condenser-to-evaporator condensing pipe, a water-fluorine heat exchanger-to-compressor refrigerant pipe, and an evaporator-to-compressor refrigerant pipe;

[0045] The electronic expansion valve comprises an electronic expansion valve A and an electronic expansion valve B.

[0046] The condenser is equipped with a cooling fan;

[0047] The outlet end of the compressor is connected to the condenser through the compressor to condenser refrigerant pipe; the condenser is connected to the electronic expansion valve A through the condenser to expansion valve refrigerant pipe; the on-off valve is connected in series on the condenser to evaporator condenser pipe; one end of the condenser to evaporator condenser pipe is connected to the condenser, and the other end is connected to the high-pressure side of the evaporator 111 of the cab matched by the system; the electronic expansion valve A is connected to the water-fluorine heat exchanger; the water-fluorine heat exchanger to the compressor refrigerant pipe connects the water-fluorine heat exchanger and the air inlet of the compressor; one end of the evaporator to compressor refrigerant pipe is connected to the air inlet of the compressor, and the other end is connected to the low-pressure side of the cab evaporator matched by the system.

[0048] The sensor unit includes the water-fluorine heat exchanger high-pressure side sensor, the water-fluorine heat exchanger low-pressure side sensor, the battery water inlet sensor A, the battery water outlet sensor B, the heater outlet sensor, the evaporator high-pressure side sensor, the evaporator low-pressure side pressure and temperature sensor, the ambient temperature sensor, and the cab sensor;

[0049] The high-pressure side sensor of the water-fluorine heat exchanger is installed on the refrigerant pipe from the condenser to the expansion valve;

[0050] The low-pressure side sensor of the water-fluorine heat exchanger is installed on the refrigerant pipe from the water-fluorine heat exchanger to the compressor;

[0051] Battery water outlet sensor B, installed on the battery water outlet pipe;

[0052] Battery water inlet sensor A, installed on the battery water inlet pipe;

[0053] The heater outlet sensor is installed on the heater inlet pipe in the cab;

[0054] The evaporator high-pressure side sensor is installed on the condenser to evaporator condenser tube;

[0055] The evaporator low-pressure side pressure and temperature sensor is installed on the refrigerant pipe from the evaporator to the compressor;

[0056] Ambient temperature sensor, set on one side of the condenser;

[0057] The cab sensor is installed in the cab.

[0058] The processing device adopts an MCU or PLC controller; the processing device 108 is composed of an aluminum alloy shell and an internal circuit board, wherein the internal circuit board is connected to the vehicle CAN bus through a data interface; the MCU or PLC controller is electrically connected to a driver, and the driver is electrically connected to a corresponding execution unit;

[0059] The processing device receives the collected signal from the sensor and controls the action of the execution unit;

[0060] The processing device is connected to the matched vehicle-related control unit via a communication line;

[0061] When the data collected by the sensor is greater than the set threshold, the PLC controller controls the execution unit by turning on or off the corresponding driver through the comparator circuit switch, transistor switch or MOS tube switch.

[0062] The outlet of the compressor 103 is connected to the condenser 101 via the compressor-to-condenser refrigerant pipe 501; the condenser 101 is connected to the electronic expansion valve A203 via the condenser-to-expansion valve refrigerant pipe 502; the on-off valve 204 is connected in series to the condenser-to-evaporator condenser pipe 503; one end of the condenser-to-evaporator condenser pipe 503 is connected to the condenser 101, and the other end is connected to the high-pressure side of the cab evaporator 111 matched with the system;

[0063] The electronic expansion valve 203 is connected to the water-fluorine heat exchanger 105; the water-fluorine heat exchanger to compressor refrigerant pipe 504 connects the water-fluorine heat exchanger 105 and the air inlet of the compressor 103; one end of the evaporator to compressor refrigerant pipe 505 is connected to the air inlet of the compressor 103, and the other end is connected to the low-pressure side of the cab evaporator 111 matched with the system;

[0064] One end of the battery water outlet pipe 404 is connected to the V1 port of the three-way reversing valve 201 at the water inlet end, and the other end is connected to the water outlet of the battery matched with the system; one end of the battery water inlet pipe 401 is connected to the V1 port of the three-way reversing valve 202 at the water outlet end, and the other end is connected to the water inlet of the battery matched with the system;

[0065] The V2 port and V3 port of the water inlet three-way reversing valve 201 are connected to the electric heating water heating pipe 402 and the water fluorine heat exchanger pipe 403 respectively through the battery water inlet tee.

[0066] The V2 port and V3 port of the three-way reversing valve 202 at the water outlet are connected to the electric heating water heating pipe 405 and the water fluorine heat exchanger pipe 406 respectively through the battery water outlet tee.

[0067] Furthermore, the three-way reversing valve 201 at the water inlet end and the three-way reversing valve 202 at the water outlet end are both two-position three-way valves, which have three interfaces V1, V2, and V3. The two positions respectively realize the conduction from V1 to V2, the sealing of V3 with V1 and V2, and the conduction between V1 and V3, and the sealing of V2 with V1 and V3.

[0068] The warm air water pump 106 is connected in series to the cab warm air inlet pipe 408, one end of the cab warm air inlet pipe 408 is connected to the electric heating water heater 104, and the other end is connected to the cab warm air inlet 408 matched with the system; the cab warm air outlet pipe 407 is connected to the electric heating water heater 104 at one end, and the other end is connected to the cab warm air box inlet 408 matched with the system;

[0069] The battery water inlet sensor A304 and the battery water outlet sensor B303 are connected in series to the battery water inlet pipe 401 and the battery water outlet pipe 404 respectively;

[0070] The warm air outlet sensor 305 is connected in series to the cab warm air outlet pipe 407;

[0071] The evaporator high-pressure side sensor 306 is connected in series to the condenser-to-evaporator condensation pipe 503 , and the evaporator low-pressure side pressure and temperature sensor 307 is connected in series to the evaporator-to-compressor refrigerant pipe 505 .

[0072] The processing device 108 is connected to the matched vehicle-related control unit via a communication line;

[0073] The processing device 108 is connected to the compressor 101, the cooling fan 102), the electronic expansion valve 203, the on-off valve 204, the electric water heater 104, the water inlet three-way reversing valve 201, the water outlet three-way reversing valve 202, the warm air water pump 106, and the battery water pump 107 to realize the control of the water-fluorine heat exchanger high-pressure side sensor 301, the water-fluorine heat exchanger low-pressure side sensor 302, the battery water outlet sensor B303, the battery water inlet sensor 304, the warm air outlet sensor 305, the evaporator high-pressure side sensor 306, the evaporator low-pressure side pressure and temperature sensor 307, and the ambient temperature sensor 308 through a wiring harness;

[0074] The structural box 109 encloses the above-mentioned components, wherein the battery water inlet pipe 401, the battery water outlet pipe 404, the cab heater outlet pipe 407, the cab heater inlet pipe 408, the compressor to condenser refrigerant pipe 501, the condenser to evaporator condenser pipe 503, and the evaporator to compressor refrigerant pipe 505 have water, refrigerant and other pipe joints connected to the matching vehicle evaporator, condenser, and battery on the structural box 109.

[0075] The processing device 108 obtains the status information of the compressor in real time through sensors, and the compressor receives the control information from the processing device 108 and executes a control response;

[0076] Furthermore, the compressor status information includes compressor speed, compressor voltage, compressor current, and compressor fault status;

[0077] Furthermore, the control information received by the compressor includes compressor enable and compressor target speed;

[0078] The processing device 108 controls the opening of the electronic expansion valve, and the opening control signal type includes a PWM signal, a LIN bus, and a CAN bus;

[0079] The processing device 108 controls the speed of the cooling fan 102, and the speed control signal type includes a PWM signal, a LIN bus, and a CAN bus;

[0080] The processing device 108 controls the opening and closing of the on-off valve;

[0081] The processing device 108 obtains the status information of the electric water heater in real time, and the electric water heater receives the control information of the processing device 108 in real time and performs control actions;

[0082] Furthermore, the state information of the electric water heater includes the water outlet temperature, the electric water heater voltage, the real-time working current, and the fault information;

[0083] The processing device 108 controls the rotation speed of the heater water pump and the battery water pump;

[0084] The processing device 108 controls the valve position switching of the three-way reversing valve at the water inlet end and the three-way reversing valve at the water outlet end;

[0085] Furthermore, the processing device 108 and the three-way reversing valve at the water inlet end and the three-way reversing valve at the water outlet end realize position switching through LIN communication or power drive;

[0086] The processing device 108 collects information values ​​of the water-fluorine heat exchanger high-pressure side sensor, the water-fluorine heat exchanger low-pressure side sensor, the battery water inlet sensor A, the battery water outlet sensor B, the warm air outlet sensor, the evaporator high-pressure side sensor, the evaporator low-pressure side pressure and temperature sensor, the ambient temperature sensor, and the cab sensor in real time.

[0087] The processing device 108 receives control instructions from the vehicle, including the target cabin temperature, the cabin heating and cooling mode, the current battery temperature, the battery target temperature low threshold, and the battery target temperature high threshold; the processing device 108 controls the execution component based on the above control instructions;

[0088] As an introduction to the working cycle, the refrigerant cycle of the water-fluorine heat exchanger is as follows: compressor → condenser → electronic expansion valve A → water-fluorine heat exchanger → compressor. This cycle can refrigerate the refrigerant in the water-fluorine heat exchanger, thereby cooling the coolant flowing through the water-fluorine heat exchanger.

[0089] Cabin refrigerant cycle 2: compressor → condenser → on-off valve → electronic expansion valve B → evaporator → compressor. This cycle cools the refrigerant in the evaporator, which is located inside the cab and works with the cab air conditioning fan to cool the air inside the cab.

[0090] The coolant cycle during the battery cooling process follows: battery outlet → electronic water pump → three-way reversing valve at the water inlet → water-fluorine heat exchanger → three-way reversing valve at the water outlet → battery inlet → battery, all-in-one device → battery outlet. This cycle reduces the coolant temperature through the water-fluorine heat exchanger, ultimately cooling the battery, all-in-one device, and other components.

[0091] The coolant cycle during the battery heating process follows: battery outlet → electronic water pump → water inlet three-way reversing valve → electric water heater → water outlet three-way reversing valve → battery water inlet → battery, all-in-one unit → battery outlet. This cycle raises the coolant temperature, heating the battery, all-in-one unit, and other components.

[0092] The cab heating coolant cycle follows: heater pump → heater outlet → cab heater → electric heater → heater pump. This cycle raises the coolant temperature, while the cab heater works in conjunction with the cab air conditioning fan to heat the air inside the cab.

[0093] The present invention is fully described for the purpose of clearer disclosure, and the prior art will not be listed one by one.

[0094] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may be modified or some of the technical features thereof may be replaced with equivalents. It is obvious for those skilled in the art to combine multiple technical solutions of the present invention. However, these modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any technical content not fully described in this utility model is generally known technology.

Claims

1. An integrated vehicle thermal management device, characterized by: The invention comprises a structural box (109); an execution unit is arranged on the structural box (109); The execution unit includes a circulating water unit and a circulating refrigerant unit; A water-fluorine heat exchanger (105) is provided between the circulating water unit and the circulating refrigerant unit for heat exchange; The circulating water circuit unit includes an electric heating water heater (104), a warm air water pump (106), a battery water pump (107), a three-way reversing valve (201) at the water inlet end, a three-way reversing valve (202) at the water outlet end, Battery water inlet pipe (401), battery water inlet tee to electric heating water heating pipe (402), battery water inlet tee to water-fluorine heat exchanger pipe (403), battery water outlet pipe (404), battery water outlet tee to electric heating water heating pipe (405), battery water outlet tee to water-fluorine heat exchanger pipe (406), cab warm air outlet pipe (407), cab warm air inlet pipe (408).

2. The integrated vehicle thermal management device according to claim 1, characterized in that: One end of the battery water outlet pipe (404) is connected to the V1 port of the three-way reversing valve (201) at the water inlet end, and the other end is connected to the water outlet of the battery (112) matched with the system; one end of the battery water inlet pipe (401) is connected to the V1 port of the three-way reversing valve (202) at the water outlet end, and the other end is connected to the water inlet of the battery (112) matched with the system; The V2 port and the V3 port of the water inlet three-way reversing valve (201) are connected to the electric heating water heater (104) and the water fluorine heat exchanger (105) respectively through the battery water inlet three-way to the electric heating water heater pipe (402) and the battery water inlet three-way to the water fluorine heat exchanger pipe (403); The V2 port and the V3 port of the three-way reversing valve (202) at the water outlet are connected to the electric heating water heater (104) and the water-fluorine heat exchanger (105) respectively through the battery water outlet tee to the electric heating water heater pipe (405) and the battery water outlet tee to the water-fluorine heat exchanger pipe (406).

3. The integrated vehicle thermal management device according to claim 2, characterized in that: The circulating refrigerant unit includes a condenser (101), a compressor (103), an on-off valve (204), and an electronic expansion valve; A refrigerant pipe (501) from the compressor to the condenser, a refrigerant pipe (502) from the condenser to the expansion valve, a condenser pipe (503) from the condenser to the evaporator, a refrigerant pipe (504) from the water-fluorine heat exchanger to the compressor, and a refrigerant pipe (505) from the evaporator to the compressor; The electronic expansion valve includes an electronic expansion valve A (203) and an electronic expansion valve B (205); The condenser (101) is equipped with a cooling fan (102); The outlet end of the compressor (103) is connected to the condenser (101) through the compressor-to-condenser refrigerant pipe (501); the condenser (101) is connected to the electronic expansion valve A (203) through the condenser-to-expansion valve refrigerant pipe (502); the on-off valve (204) is connected in series to the condenser-to-evaporator condenser pipe (503); one end of the condenser-to-evaporator condenser pipe (503) is connected to the condenser (101), and the other end is connected to the high-pressure side of the evaporator 111 of the cab matched with the system; the electronic expansion valve A (203) is connected to the water-fluorine heat exchanger (105); the water-fluorine heat exchanger-to-compressor refrigerant pipe (504) is connected to the water-fluorine heat exchanger (105) and the air inlet of the compressor (103); one end of the evaporator-to-compressor refrigerant pipe (505) is connected to the air inlet of the compressor (103), and the other end is connected to the low-pressure side of the cab evaporator (111) matched with the system.

4. The integrated vehicle thermal management device according to claim 3, characterized in that: A sensor unit is provided in the structural box (109); The sensor unit includes a water-fluorine heat exchanger high-pressure side sensor (301), a water-fluorine heat exchanger low-pressure side sensor (302), a battery water outlet sensor B (303), a battery water inlet sensor A (304), a warm air outlet sensor (305), an evaporator high-pressure side sensor (306), an evaporator low-pressure side pressure and temperature sensor (307), an ambient temperature sensor (308), and a cab sensor (309); A water-fluorine heat exchanger high-pressure side sensor (301) is provided on a refrigerant pipe (502) from the condenser to the expansion valve; A low-pressure side sensor (302) of the water-fluorine heat exchanger is provided on a refrigerant pipe (504) from the water-fluorine heat exchanger to the compressor; A battery water outlet sensor B (303) is provided on the battery water outlet pipe (404); A battery water inlet sensor A (304), arranged on the battery water inlet pipe (401); A warm air outlet sensor (305) is provided on the warm air inlet pipe (408) of the cab; An evaporator high-pressure side sensor (306) is provided on the condenser-to-evaporator condensation pipe (503); The evaporator low-pressure side pressure and temperature sensor (307) is installed on the evaporator-compressor refrigerant pipe (505); An ambient temperature sensor (308) is provided on one side of the condenser (101); The cab sensor (309) is arranged in the cab.

Images