Integrated thermal management degassing system for hybrid electric vehicle and vehicle

Abstract

The present invention relates to the technical field of hybrid vehicles, and in particular to an integrated thermal management degassing system and vehicle for hybrid vehicles. The integrated thermal management degassing system for hybrid vehicles comprises: a main circulation loop provided with an engine water jacket, to which an expansion kettle is connected; a motor heat exchange circuit provided with a heat exchange pipeline for a motor and electronic control component; a battery circulation circuit provided with a heat exchange pipeline for a battery pack; and a connecting pipeline valve assembly, which is used to connect the main circulation loop, the motor heat exchange circuit and the battery circulation circuit upon receiving a degassing instruction, and exhaust gas through an expansion kettle. This solution can solve the problem of difficulty in exhausting gas in the heat exchange pipeline and low exhaust efficiency in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid vehicle, and in particular to an integrated thermal management degassing system for a hybrid vehicle and a vehicle. Background Art

[0002] The thermal management system of new energy vehicles is derived from the thermal management system of traditional fuel vehicles. It has common parts of the thermal management system of traditional fuel vehicles, such as engine cooling system, air conditioning system, etc., and has additional cooling systems for new parts such as battery, motor and electronic control. The use of three electrics to replace the engine and gearbox is the main change in the thermal management system compared to traditional fuel vehicles. In addition, there may be electric compressors to replace ordinary compressors, and new components such as battery cooling plates, battery coolers, PTC heaters or heat pumps.

[0003] Most hybrid vehicle motors and battery thermal management systems are independent of each other. Liquid cooling is basically used for motor cooling, where the motor radiator is used to dissipate heat from the coolant, and the cooled coolant is used to dissipate heat from the drive motor and motor controller. Power battery cooling uses forced air cooling and liquid cooling. Forced air cooling uses the cold air inside the vehicle body to dissipate heat from the power battery, but this method has a poor cooling effect; liquid cooling uses a heat exchanger to dissipate heat and cool down through heat exchange between the air conditioning refrigerant and the coolant. Moreover, the battery temperature control and motor temperature control are separated, so the motor waste heat is not used to heat the power battery, nor is the motor radiator fully utilized to dissipate heat from the power battery and the motor system at the same time at a low temperature, which results in excessive system energy consumption.

[0004] At the same time, when the power battery temperature is below 0°C, it needs to be heated. The total energy of the battery of a pure electric vehicle is large, and an electric heater can be used to heat the power battery; but the total energy of the battery of a hybrid vehicle is low, and the use of electric heating will excessively consume battery power and reduce battery life. Therefore, the existing electric heating method is not suitable for heating the battery of a hybrid vehicle.

[0005] In addition, in the existing solutions, the engine circulation loop, motor circulation loop and battery circulation loop are basically independent of each other, or only have heat exchange, and the water inlet and outlet in each circulation loop are on the same horizontal plane, and the gas in each loop is difficult to discharge. Summary of the invention

[0006] In view of the defects existing in the prior art, the purpose of the present invention is to provide an integrated thermal management degassing system and vehicle for a hybrid electric vehicle, which can solve the problem that the gas in the heat exchange pipeline is difficult to discharge in the prior art.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0008] In one aspect, the present invention provides an integrated thermal management degassing system for a hybrid electric vehicle, characterized in that it comprises:

[0009] A main circulation loop of an engine water jacket is provided, and an expansion kettle is connected to the engine water jacket;

[0010] A motor heat exchange circuit provided with heat exchange piping for motor and electronic control components;

[0011] A battery circulation loop provided with a heat exchange pipeline for the battery pack;

[0012] The connecting pipeline valve assembly is used to connect the main circulation loop, the motor heat exchange circuit and the battery circulation loop when receiving a degassing instruction, and exhaust gas through the expansion kettle.

[0013] In some optional solutions, the main circulation loop includes a first pipeline and a second pipeline, the first pipeline is provided with a heater water pump, a heater core and a water-cooled condenser in sequence, the second pipeline is provided with a fuel heater and an engine water jacket in sequence, the first pipeline and the second pipeline are connected in series or disconnected through a four-way reversing valve, and the engine water jacket is connected with an expansion kettle;

[0014] The motor water pump and the motor electronic control component heat exchange pipeline are arranged in sequence on the motor heat exchange circuit, one end of the motor heat exchange circuit is connected to the warm air water pump and the first pipeline of the water-cooled condenser, and the other end is connected to the first pipeline between the warm air water pump and the water-cooled condenser;

[0015] The battery circulation loop is equipped with a battery water pump, a battery cooling plate exchanger, a battery heating plate exchanger and a battery pack heat exchange pipeline in sequence;

[0016] The connecting pipeline valve assembly is used to connect the main circulation loop, the motor heat exchange circuit and the battery circulation loop to form a series pipeline of the heater water pump, fuel heater, engine water jacket, heater core, motor water pump, motor electronic control component heat exchange pipeline and battery circulation loop.

[0017] In some optional schemes, the connecting pipeline valve assembly includes a first series pipeline and a second series pipeline, one end of the first series pipeline is connected to the motor heat exchange circuit between the heat exchange pipeline of the motor and electronic control component and the first pipeline connection point through a seventh three-way reversing valve, and the other end of the first series pipeline is connected to the battery circulation loop between the battery cooling plate exchanger and the battery heating plate exchanger; one end of the second series pipeline is connected to the motor heat exchange circuit between the heat exchange pipeline of the motor and electronic control component and the first pipeline connection point through the first three-way reversing valve, and the other end of the second series pipeline is connected to the battery circulation loop between the battery cooling plate exchanger and the battery water pump; and the connection point between the second series pipeline and the motor heat exchange circuit is close to one side of the heat exchange pipeline of the motor and electronic control component.

[0018] In some optional schemes, a first parallel pipeline is connected to both ends of the motor heat exchange circuit, one end of the first parallel pipeline is connected to the motor heat exchange circuit between the heat exchange pipeline of the motor electronic control component and the first pipeline connection point through a fourth three-way reversing valve, and a first exhaust valve is provided on the motor heat exchange circuit.

[0019] In some optional schemes, the first exhaust valve is arranged at the highest point of the motor heat exchange circuit.

[0020] In some optional schemes, the battery circulation loop also includes a second parallel pipeline, one end of the second parallel pipeline is connected to the battery circulation loop between the battery water pump and the battery refrigeration plate exchanger through a second three-way reversing valve, the other end of the second parallel pipeline is connected to the battery circulation loop between the battery refrigeration plate exchanger and the battery heating plate exchanger, and a second exhaust valve is provided on the battery circulation loop.

[0021] In some optional schemes, the second exhaust valve is located at the highest point of the battery circulation loop.

[0022] In some optional schemes, the water inlet pipe and the water outlet pipe of the engine water jacket in the main circulation loop, the water inlet pipe and the water outlet pipe of the heat exchange pipe of the motor and electronic control component in the motor heat exchange circuit, and the water inlet pipe and the water outlet pipe of the battery pack heat exchange pipe in the battery circulation loop are all arranged in upper and lower layers.

[0023] In some optional schemes, a high-temperature radiator pipeline is connected to the engine water jacket, and a high-temperature radiator and an electronic thermostat are provided on the high-temperature radiator pipeline, and the electronic thermostat is used to control the on-off of the high-temperature radiator pipeline.

[0024] On the other hand, the present invention further provides a vehicle, comprising any one of the above-mentioned integrated thermal management degassing systems for hybrid electric vehicles.

[0025] Compared with the prior art, the advantages of the present invention are: the main circulation loop, the motor heat exchange circuit and the battery circulation loop are connected by the connecting pipeline valve assembly, so that the fluid circulation between the main circulation loop, the motor heat exchange circuit and the battery circulation loop can be carried out, and an expansion kettle is connected to the engine water jacket, so that the main circulation loop, the motor heat exchange circuit and the battery circulation loop can all be brought from the fluid circulation to the expansion kettle and discharged from the expansion kettle. In addition, when filling the heat exchange fluid, the main circulation loop, the motor heat exchange circuit and the battery circulation loop can also be connected by the connecting pipeline valve assembly, and the gas in the circulating fluid of the main circulation loop, the motor heat exchange circuit and the battery circulation loop can be discharged through the expansion kettle, and the added heat exchange fluid can also flow to each pipeline more easily, thereby improving the exhaust efficiency and the filling efficiency. Discharging the gas in the pipeline can also increase the heat exchange efficiency of the circulation pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 Schematic diagram of an integrated thermal management degassing system for a hybrid electric vehicle in an embodiment of the present invention.

[0028] In the figure:

[0029] 101. Heater water pump; 102. Battery water pump; 103. Motor water pump;

[0030] 201, water-cooled condenser; 202, battery cooling plate replacement; 203, battery heating plate replacement;

[0031] 301, first three-way reversing valve; 302, second three-way reversing valve; 303, third three-way reversing valve; 304, fourth three-way reversing valve; 305, fifth three-way reversing valve; 306, sixth three-way reversing valve; 307, seventh three-way reversing valve;

[0032] 401, four-way reversing valve;

[0033] 501, first stop valve; 502, second stop valve;

[0034] 601, electronic expansion valve; 602, mechanical expansion valve;

[0035] 701, fuel heater; 702, fuel tank heat exchange pipeline; 703, engine water jacket; 704, heater core; 705, electric compressor; 706, low-temperature radiator; 707, evaporator; 708, motor and electronic control component heat exchange pipeline; 709, battery pack heat exchange pipeline; 710, first exhaust valve; 711, second exhaust valve; 712, expansion kettle; 713, high-temperature radiator; 714, electronic thermostat. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 As shown, the present invention provides an integrated thermal management degassing system for a hybrid electric vehicle, comprising: a main circulation loop provided with an engine water jacket 703, to which an expansion kettle 712 is connected; a motor heat exchange circuit provided with a motor and electronic control component heat exchange pipeline 708; a battery circulation circuit provided with a battery pack heat exchange pipeline 709; and a connecting pipeline valve assembly, which is used to connect the main circulation loop, the motor heat exchange circuit and the battery circulation loop when a degassing command is received, and exhaust gas is discharged through the expansion kettle 712.

[0039] When the hybrid vehicle integrated thermal management degassing system mentioned in this solution is used for degassing, the main circulation loop, the motor heat exchange circuit and the battery circulation loop are connected by the connecting pipeline valve assembly, and the fluid circulation between the main circulation loop, the motor heat exchange circuit and the battery circulation loop can be carried out. The expansion kettle 712 is connected to the engine water jacket 703, so the main circulation loop, the motor heat exchange circuit and the battery circulation loop can all be brought from the fluid circulation to the expansion kettle 712 and discharged from the expansion kettle 712. In addition, when filling the heat exchange fluid, the main circulation loop, the motor heat exchange circuit and the battery circulation loop can also be connected by the connecting pipeline valve assembly, and the gas in the circulating fluid of the main circulation loop, the motor heat exchange circuit and the battery circulation loop can be discharged through the expansion kettle 712, which can also make the added heat exchange fluid flow to each pipeline more easily, thereby improving the exhaust efficiency and the filling efficiency. Discharging the gas in the pipeline can also increase the heat exchange efficiency of the circulation pipeline.

[0040] In some optional embodiments, the main circulation loop includes a first pipeline and a second pipeline, the first pipeline is provided with a heater water pump 101, a heater core 704 and a water-cooled condenser 201 in sequence, the second pipeline is provided with a fuel heater 701 and an engine water jacket 703 in sequence, the first pipeline and the second pipeline are connected in series or disconnected through a four-way reversing valve 401, and an expansion kettle 712 is connected to the engine water jacket 703;

[0041] The motor water pump 103 and the motor electronic control component heat exchange pipeline 708 are arranged in sequence on the motor heat exchange circuit, one end of the motor heat exchange circuit is connected to the warm air water pump 101 and the first pipeline of the water-cooled condenser 201, and the other end is connected to the first pipeline between the warm air water pump 101 and the water-cooled condenser 201;

[0042] The battery circulation loop is provided with a battery water pump 102, a battery cooling plate exchanger 202, a battery heating plate exchanger 203 and a battery pack heat exchange pipeline 709 in sequence;

[0043] The connecting pipeline valve assembly is used to connect the main circulation loop, the motor heat exchange circuit and the battery circulation loop to form a series pipeline of the heater water pump 101, the fuel heater 701, the engine water jacket 703, the heater core 704, the motor water pump 103, the motor electronic control component heat exchange pipeline 708, and the battery circulation loop.

[0044] In this embodiment, if the main circulation loop needs to be degassed separately, the four-way reversing valve 401 can be used to connect the first pipeline and the second pipeline to form a circulation loop from the warm air water pump 101 to the fuel heater 701, the engine water jacket 703, the warm air core 704 and the water-cooled condenser 201 in sequence, and then back to the warm air water pump 101. The warm air water pump 101 is started to circulate the heat exchange fluid in the main circulation pipeline in the main circulation pipeline, so that the expansion kettle 712 connected to the engine water jacket 703 can be used to degas the entire main circulation water circuit.

[0045] A first stop valve 501 is provided on the first pipeline between the warm air water pump 101 and the water-cooled condenser 201 .

[0046] If it is necessary to degas the main circulation loop and the motor heat exchange circuit, close the first stop valve 501 set on the first pipeline between the warm air water pump 101 and the water-cooled condenser 201. Since one end of the motor heat exchange circuit is connected to the first pipeline of the warm air water pump 101 and the water-cooled condenser 201, and the other end is connected to the first pipeline between the warm air water pump 101 and the water-cooled condenser 201, close the first stop valve 501, and use the four-way reversing valve 401 to connect the first pipeline and the second pipeline to form a circulation loop from the warm air water pump 101 to the fuel heater 701, the engine water jacket 703, the warm air core 704, the motor water pump 103 and the motor electronic control component heat exchange pipeline 708, and then return to the warm air water pump 101. Start the heater water pump 101 and the motor water pump 103 to circulate the heat exchange fluid in the main circulation pipeline and the motor heat exchange circuit, so that the main circulation pipeline and the motor heat exchange circuit can be degassed using the expansion kettle 712 connected to the engine water jacket 703.

[0047] If it is necessary to degas the main circulation loop, the motor heat exchange circuit and the battery circulation loop, the first stop valve 501 is closed, the first pipeline and the second pipeline are connected by the four-way reversing valve 401, and the main circulation loop, the motor heat exchange circuit and the battery circulation loop are connected by the connecting pipeline valve assembly, so as to form a series pipeline starting from the warm air water pump 101, passing through the fuel heater 701, the engine water jacket 703, the warm air core 704, the motor water pump 103, the motor electronic control component heat exchange pipeline 708 and the battery circulation loop in sequence, and then returning to the warm air water pump 101. The warm air water pump 101, the battery water pump 102 and the motor water pump 103 are turned on to circulate the heat exchange fluid in the main circulation pipeline, the motor heat exchange circuit and the battery circulation loop, so that the main circulation pipeline, the motor heat exchange circuit and the battery circulation loop can be degassed by using the expansion kettle 712 connected to the engine water jacket 703.

[0048] In this example, the fuel heater 701 is arranged at the lowest point of the entire circulation loop.

[0049] In some optional embodiments, the connecting pipeline valve assembly includes a first series pipeline and a second series pipeline, one end of the first series pipeline is connected to the motor heat exchange circuit between the motor electronic control component pipeline and the first pipeline connection point through the seventh three-way reversing valve 307, and the other end of the first series pipeline is connected to the battery circulation loop between the battery cooling plate exchanger 202 and the battery heating plate exchanger 203; one end of the second series pipeline is connected to the motor heat exchange circuit between the motor electronic control component heat exchange pipeline 708 and the first pipeline connection point through the first three-way reversing valve 301, and the other end of the second series pipeline is connected to the battery circulation loop between the battery cooling plate exchanger 202 and the battery water pump 102; and the connection point between the second series pipeline and the motor heat exchange circuit is close to one side of the motor electronic control component heat exchange pipeline 708.

[0050] In this embodiment, when degassing the main circulation loop, the motor heat exchange circuit and the battery circulation loop, the first shut-off valve 501 is closed, the first pipeline and the second pipeline are connected by the four-way reversing valve 401, the first three-way reversing valve 301 on the motor heat exchange circuit is switched to connect the motor heat exchange circuit with the second series pipeline, so that the heat exchange fluid enters the battery circulation loop through the second series pipeline and the connection point of the battery circulation loop between the battery refrigeration plate 202 and the battery water pump 102; the seventh three-way reversing valve 307 on the motor heat exchange circuit is switched to connect the motor heat exchange circuit with the first series pipeline, so that the heat exchange fluid in the battery circulation loop returns from the first series pipeline to the motor heat exchange circuit. In this way, the heat exchange fluid is circulated in the main circulation pipeline, the motor heat exchange circuit and the battery circulation loop, so that the main circulation pipeline, the motor heat exchange circuit and the battery circulation loop can be degassed by using the expansion kettle 712 connected to the engine water jacket 703.

[0051] The motor electronic control component includes a motor component and an electronic control component connected in parallel, the motor component includes a plurality of motors connected in series, and the electronic control component includes an all-in-one controller and a motor controller connected in series.

[0052] In some optional embodiments, a first parallel pipeline is connected at both ends of the motor heat exchange circuit, one end of the first parallel pipeline is connected to the motor heat exchange circuit between the motor electronic control component heat exchange pipeline 708 and the first pipeline connection point through the fourth three-way reversing valve 304, and a first exhaust valve 710 is provided on the motor heat exchange circuit.

[0053] In this embodiment, one end of the first parallel pipeline is connected to the motor heat exchange pipeline between the motor electronic control component heat exchange pipeline 708 and the first pipeline connection point through the fourth three-way reversing valve 304, and the other end is connected to the motor heat exchange pipeline between the motor water pump 103 and the first pipeline connection point. When it is necessary to degas the motor heat exchange pipeline separately, the heat exchange fluid transported from one end of the motor heat exchange pipeline to the first pipeline is diverted to the first parallel pipeline through the fourth three-way reversing valve 304, and then refluxed from the other end of the motor heat exchange pipeline, so as to realize the self-circulation of the motor water pump 103 and the motor electronic control component heat exchange pipeline 708 in the motor heat exchange pipeline. Since the motor heat exchange pipeline is provided with the first exhaust valve 710, the self-circulation degassing of the motor heat exchange pipeline can be realized.

[0054] In addition, when the heat exchange fluid circulates in the large loop in which the main circulation pipeline, the motor heat exchange circuit and the battery circulation circuit are connected in series, the first exhaust valve 710 provided in the motor heat exchange circuit can also exhaust gas to achieve the purpose of faster exhaust.

[0055] In some optional embodiments, the first exhaust valve 710 is disposed at the highest point of the motor heat exchange circuit.

[0056] In this embodiment, disposing the first exhaust valve 710 at the highest point of the motor heat exchange circuit is more conducive to exhausting the gas in the heat exchange fluid when the heat exchange fluid circulates in the motor heat exchange circuit.

[0057] In some optional embodiments, the battery circulation loop also includes a second parallel pipeline, one end of the second parallel pipeline is connected to the battery circulation loop between the battery water pump 102 and the battery refrigeration plate 202 through a second three-way reversing valve 302, and the other end of the second parallel pipeline is connected to the battery circulation loop between the battery refrigeration plate 202 and the battery heating plate 203, and a second exhaust valve 711 is provided on the battery circulation loop.

[0058] In this embodiment, when it is necessary to degas the battery pack heat exchange pipeline 709 in the battery circulation loop, the second three-way reversing valve 302 and the second parallel pipeline are used to short-circuit the battery circulation loop to form a circulation loop of the battery water pump 102, the battery heating plate exchanger 203 and the battery pack heat exchange pipeline 709, and a second exhaust valve 711 is provided on the circulation loop of the battery water pump 102, the battery heating plate exchanger 203 and the battery pack heat exchange pipeline 709, so that self-circulating degassing of the circulation loop of the battery water pump 102, the battery heating plate exchanger 203 and the battery pack heat exchange pipeline 709 can be achieved.

[0059] In addition, when the heat exchange fluid circulates in the large loop in which the main circulation pipeline, the motor heat exchange circuit and the battery circulation circuit are connected in series, the second exhaust valve 711 can also exhaust gas to achieve the purpose of faster exhaust.

[0060] In some optional embodiments, the second exhaust valve 711 is located at the highest point of the battery circulation loop.

[0061] In this embodiment, disposing the second exhaust valve 711 at the highest point of the battery circulation loop is more conducive to exhausting the gas in the heat exchange fluid when the heat exchange fluid circulates in the battery circulation loop.

[0062] In some optional embodiments, the water inlet pipe and the water outlet pipe of the engine water jacket 703 in the main circulation loop, the water inlet pipe and the water outlet pipe of the heat exchange pipe 708 of the motor and electronic control component in the motor heat exchange circuit, and the water inlet pipe and the water outlet pipe of the battery pack heat exchange pipe 709 in the battery circulation loop are all arranged in upper and lower layers.

[0063] In this embodiment, the water inlet and outlet pipes of the engine water jacket 703, the water inlet and outlet pipes of the motor and electronic control component heat exchange pipe 708, and the water inlet and outlet pipes of the battery pack heat exchange pipe 709 are all arranged in layers up and down. Because the gas is always discharged upward, the water inlet and outlet pipes of each branch are layered up and down, with the water inlet pipe at the bottom and the water outlet pipe at the top. The first exhaust valve 710 and the second exhaust valve 711 are both arranged on the water outlet pipe located at the upper layer, which is conducive to the discharge of gas in each circulating water circuit.

[0064] like Figure 1 As shown, in some optional embodiments, a high-temperature radiator pipeline is connected to the engine water jacket 703, and a high-temperature radiator 713 and an electronic thermostat 714 are provided on the high-temperature radiator pipeline. The electronic thermostat 714 is used to control the on-off of the high-temperature radiator pipeline.

[0065] In this embodiment, when the system receives a command to degas the high-temperature radiator pipeline or an instruction to degas the entire large cycle, the electronic thermostat is fully opened, and the added coolant can directly enter the large cycle of the main circulation pipeline, the motor heat exchange circuit and the battery circulation loop, and the high-temperature radiator pipeline can also be added to the large cycle. When a mechanical thermostat is used, the engine needs to be run to reach a certain load, and the thermostat is opened before the coolant can enter the large cycle, degassing through the engine water expansion tank, thereby improving the degassing capacity of the engine large circulation water circuit.

[0066] The water inlet and outlet pipes of the engine water jacket 703, the water inlet and outlet pipes of the motor and electronic control component heat exchange pipe 708, and the water inlet and outlet pipes of the battery pack heat exchange pipe 709 are all arranged in layers up and down. Because the gas is always discharged upward, the water inlet and outlet pipes of each branch are layered up and down, with the water inlet pipe at the bottom and the water outlet pipe at the top. The first exhaust valve 710 and the second exhaust valve 711 are both arranged on the water outlet pipe located at the upper layer, which is conducive to the discharge of gas in each circulating water circuit.

[0067] In addition, the integrated thermal management degassing system of the hybrid vehicle also includes an electric compressor circulation loop, on which an electric compressor 705, a water-cooled condenser 201, an evaporator 707 and a battery refrigeration plate exchanger 202 arranged on parallel pipelines are arranged in sequence; the electric compressor circulation loop exchanges heat with the main circulation loop through the water-cooled condenser 201, and exchanges heat with the battery circulation loop through the battery refrigeration plate exchanger 202; an electronic expansion valve 601 is arranged on the parallel pipeline where the evaporator 707 is located, and a second stop valve 502 and a mechanical expansion valve 602 are arranged on the parallel pipeline where the battery refrigeration plate exchanger 202 is located.

[0068] A third parallel pipeline is connected in parallel on the first pipeline through a third three-way reversing valve 303. The third three-way reversing valve 303 is arranged on the first pipeline between the water-cooled condenser 201 and the warm air core 704. One end of the third parallel pipeline is connected to the third three-way reversing valve 303, and the other end is connected to the first pipeline between the water-cooled condenser 201 and the third three-way reversing valve 303. The third parallel pipeline passes through the battery heating plate exchanger 203, and the battery circulation loop and the main circulation loop perform heat exchange through the battery heating plate exchanger 203.

[0069] A fifth three-way reversing valve 305 is also provided on the first pipeline between the warm air water pump 101 and the four-way reversing valve 401. One end of the low-temperature radiator pipeline is connected to the fifth three-way reversing valve 305, and the other end is connected to the first pipeline between the water-cooled condenser 201 and the third three-way reversing valve 303. The heat exchange fluid in the first pipeline can be diverted to the low-temperature radiator pipeline through the fifth three-way reversing valve 305. A low-temperature radiator 706 is provided on the low-temperature radiator pipeline, which can be used to cool the water-cooled condenser 201.

[0070] A fourth parallel pipeline is connected in parallel to the second pipeline between the fuel heater 701 and the engine water jacket 703, and a fuel tank heat exchange pipeline 702 is arranged on the fourth parallel pipeline. One end of the fourth parallel pipeline is connected to the second pipeline through the sixth three-way reversing valve 306, and the other end is connected to the second pipeline between the sixth three-way reversing valve 306 and the engine water jacket 703. The heat exchange fluid in the second pipeline can be switched to the fourth parallel pipeline for cooling or heating the fuel tank.

[0071] In a second aspect, the present invention further provides a vehicle comprising any one of the above-mentioned integrated thermal management degassing systems for hybrid electric vehicles.

[0072] In summary, when the hybrid vehicle integrated thermal management degassing system mentioned in this solution is used for degassing, the main circulation loop, the motor heat exchange circuit and the battery circulation loop are connected by the connecting pipeline valve assembly, and the fluid circulation between the main circulation loop, the motor heat exchange circuit and the battery circulation loop can be carried out. The expansion kettle 712 is connected to the engine water jacket 703, so the main circulation loop, the motor heat exchange circuit and the battery circulation loop can all be brought from the fluid circulation to the expansion kettle 712 and discharged from the expansion kettle 712. In addition, when filling the heat exchange fluid, the main circulation loop, the motor heat exchange circuit and the battery circulation loop can also be connected by the connecting pipeline valve assembly, and the gas in the circulating fluid of the main circulation loop, the motor heat exchange circuit and the battery circulation loop can be discharged through the expansion kettle 712, which can also make the added heat exchange fluid flow to each pipeline more easily, thereby improving the exhaust efficiency and the filling efficiency. Discharging the gas in the pipeline can also increase the heat exchange efficiency of the circulation pipeline.

[0073] By connecting the first parallel pipeline at both ends of the motor heat exchange circuit and setting the first exhaust valve 710 on the motor heat exchange circuit, self-circulation of the motor water pump 103 and the motor electronic control component heat exchange pipeline 708 in the motor heat exchange circuit is achieved. Since the first exhaust valve 710 is provided on the motor heat exchange circuit, self-circulation degassing of the motor heat exchange circuit can be achieved.

[0074] The battery circulation loop is short-circuited by using the second three-way reversing valve 302 and the second parallel pipeline to form a circulation loop of the battery water pump 102, the battery heating plate exchanger 203 and the battery pack heat exchange pipeline 709, and a second exhaust valve 711 is set on the circulation loop of the battery water pump 102, the battery heating plate exchanger 203 and the battery pack heat exchange pipeline 709 to achieve self-circulation degassing of the circulation loop of the battery water pump 102, the battery heating plate exchanger 203 and the battery pack heat exchange pipeline 709.

[0075] With the use of an electronic thermostat, the coolant can be directly added into the main circulation pipeline, the motor heat exchange circuit and the battery circulation loop. The high-temperature radiator pipeline can also be added to the large circulation, which is helpful for exhausting and adding coolant. The hybrid vehicle integrated thermal management degassing system can increase the filling rate by 15% compared with conventional solutions, and shorten the degassing time by 30%.

[0076] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to 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. 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, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0077] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0078] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An integrated thermal management degassing system for a hybrid electric vehicle, characterized in that: include: A main circulation loop of an engine water jacket (703) is provided, and an expansion kettle (712) is connected to the engine water jacket (703); A motor heat exchange circuit is provided with a heat exchange pipeline (708) of a motor and an electric control component; A battery circulation loop provided with a battery pack heat exchange pipeline (709); A connecting pipeline valve assembly, which is used to connect the main circulation loop, the motor heat exchange circuit and the battery circulation loop when receiving a degassing instruction, and exhaust gas through the expansion kettle (712); The main circulation loop comprises a first pipeline and a second pipeline, wherein a heater pump (101), a heater core (704) and a water-cooled condenser (201) are sequentially arranged on the first pipeline, and a fuel heater (701) and an engine water jacket (703) are sequentially arranged on the second pipeline, wherein the first pipeline and the second pipeline are connected in series or disconnected via a four-way reversing valve (401), and an expansion kettle (712) is connected to the engine water jacket (703); A motor water pump (103) and a motor electronic control component heat exchange pipeline (708) are sequentially arranged on the motor heat exchange circuit, one end of the motor heat exchange circuit is connected to the warm air water pump (101) and the first pipeline of the water-cooled condenser (201), and the other end is connected to the first pipeline between the warm air water pump (101) and the water-cooled condenser (201); The battery circulation loop is provided with a battery water pump (102), a battery cooling plate exchanger (202), a battery heating plate exchanger (203) and a battery pack heat exchange pipeline (709) in sequence; The connecting pipeline valve assembly is used to connect the main circulation loop, the motor heat exchange pipeline and the battery circulation loop, so as to form a series pipeline of the heater water pump (101), the fuel heater (701), the engine water jacket (703), the heater core (704), the motor water pump (103), the motor electronic control assembly heat exchange pipeline (708) and the battery circulation loop; The connecting pipeline valve assembly comprises a first series pipeline and a second series pipeline, wherein one end of the first series pipeline is connected to the motor heat exchange pipeline (708) of the motor electronic control assembly and the motor heat exchange circuit between the first pipeline connection point through a seventh three-way reversing valve (307), and the other end of the first series pipeline is connected to the battery circulation loop between the battery cooling plate exchanger (202) and the battery heating plate exchanger (203); one end of the second series pipeline is connected to the motor heat exchange pipeline (708) of the motor electronic control assembly and the motor heat exchange circuit between the first pipeline connection point through a first three-way reversing valve (301), and the other end of the second series pipeline is connected to the battery circulation loop between the battery cooling plate exchanger (202) and the battery water pump (102); and the connection point between the second series pipeline and the motor heat exchange circuit is close to one side of the motor electronic control assembly heat exchange pipeline (708).

2. The hybrid vehicle integrated thermal management degassing system as claimed in claim 1, characterized in that: The two ends of the motor heat exchange circuit are connected to a first parallel pipeline, one end of the first parallel pipeline is connected to the motor heat exchange circuit between the motor electronic control component heat exchange pipeline (708) and the first pipeline connection point through a fourth three-way reversing valve (304), and the motor heat exchange circuit is provided with a first exhaust valve (710).

3. The hybrid vehicle integrated thermal management degassing system as claimed in claim 2, characterized in that: The first exhaust valve (710) is arranged at the highest point of the motor heat exchange circuit.

4. The integrated thermal management degassing system for a hybrid electric vehicle as claimed in claim 1, characterized in that: The battery circulation loop also includes a second parallel pipeline, one end of the second parallel pipeline is connected to the battery circulation loop between the battery water pump (102) and the battery cooling plate (202) through a second three-way reversing valve (302), and the other end of the second parallel pipeline is connected to the battery circulation loop between the battery cooling plate (202) and the battery heating plate (203), and a second exhaust valve (711) is provided on the battery circulation loop.

5. The hybrid vehicle integrated thermal management degassing system as claimed in claim 4, characterized in that: The second exhaust valve (711) is located at the highest point of the battery circulation loop.

6. The hybrid vehicle integrated thermal management degassing system as claimed in claim 1, characterized in that: The water inlet and outlet pipes of the engine water jacket (703) in the main circulation loop, the water inlet and outlet pipes of the heat exchange pipe (708) of the motor and electronic control component in the motor heat exchange circuit, and the water inlet and outlet pipes of the battery pack heat exchange pipe (709) in the battery circulation loop are all arranged in upper and lower layers.

7. The hybrid vehicle integrated thermal management degassing system as claimed in claim 1, characterized in that: The engine water jacket (703) is connected to a high-temperature radiator pipeline, and a high-temperature radiator (713) and an electronic thermostat (714) are provided on the high-temperature radiator pipeline. The electronic thermostat (714) is used to control the on-off of the high-temperature radiator pipeline.

8. A vehicle, characterized in that: It comprises the integrated thermal management degassing system for a hybrid electric vehicle as claimed in any one of claims 1 to 7.

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