Direct-cooling and direct-heating thermal management system and method for passenger compartment of hybrid electric vehicle

Abstract

The invention provides a direct cooling and direct heating heat management system and method for a passenger compartment of a hybrid electric vehicle. The system comprises a refrigerant loop, a motor water loop, a battery water loop and a warm air water loop. The refrigerant loop comprises a compressor, an in-vehicle condenser, an out-vehicle heat exchanger, an in-vehicle evaporator and a first heat exchanger which are communicated through pipelines and valves; the motor water loop is communicated with the battery water loop through a multi-way water valve; the refrigerant loop exchanges heat with the battery water loop through the first heat exchanger; and the battery water loop exchanges heat with the warm air water loop through the second heat exchanger. The system improves the utilization rate of waste heat of parts in the vehicle and can fully meet the heating requirement of a passenger compartment.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and in particular to a direct cooling and heating thermal management system and method for a passenger compartment of a hybrid vehicle. Background Art

[0002] With the development of vehicle power technology, the market share of hybrid vehicles is increasing. However, since they have two power systems, the motor, battery, and engine need to be kept at a suitable operating temperature. In order to ensure the physical comfort of the driver and passengers, there is also a need for cooling or heating the passenger compartment. The existing hybrid vehicle thermal management system is difficult to take into account the thermal management needs of the motor, battery, engine, and passenger compartment. It does not effectively and reasonably distribute and transfer heat between the components, which increases the burden on the thermal management system and greatly reduces the vehicle's range. Summary of the invention

[0003] The purpose of the present invention is to provide a direct cooling and direct heating thermal management system and method for a hybrid vehicle passenger compartment, so as to achieve heat distribution among various components in the vehicle, reduce the burden of thermal management, and improve vehicle endurance.

[0004] In order to solve the above technical problems, the present invention provides a hybrid vehicle passenger compartment direct cooling and direct heating thermal management system, including: a refrigerant circuit, a motor water circuit, a battery water circuit, and a heater water circuit; The refrigerant circuit includes a compressor, an in-vehicle condenser, an out-vehicle heat exchanger, an in-vehicle evaporator, and a first heat exchanger connected through pipes and valves; The motor water circuit is connected to the battery water circuit through a multi-way water valve; The refrigerant circuit exchanges heat with the battery water circuit through the first heat exchanger; The battery water circuit exchanges heat with the heater water circuit through the second heat exchanger. According to the above scheme, the refrigerant circuit includes: A first refrigerant circuit consisting of a compressor, an in-vehicle condenser, a combination valve, an out-vehicle heat exchanger, and a second stop valve connected in sequence; A refrigerant second circuit consisting of a compressor, an in-vehicle condenser, a combination valve, an out-vehicle heat exchanger, a second electronic expansion valve, and an in-vehicle evaporator connected in sequence; A third refrigerant circuit consisting of a compressor, an in-vehicle condenser, a combination valve, an out-vehicle heat exchanger, a third electronic expansion valve, and a first heat exchanger connected in sequence; The combined valve comprises a first stop valve and a first electronic expansion valve which are connected in parallel.

[0005] According to the above scheme, the battery water circuit includes: A battery first water circuit consisting of a battery, a four-way water valve, a first heat exchanger, a second three-way water valve, and a battery water pump connected in sequence; The second water circuit of the battery is composed of a battery, a four-way water valve, a first heat exchanger, a second three-way water valve and a second heat exchanger which are connected in sequence.

[0006] According to the above scheme, the motor water circuit includes: A first water circuit for the motor composed of a motor water pump, a motor, a four-way water valve, and a first three-way water valve connected in sequence; The second water circuit of the motor is composed of a motor water pump, a motor, a motor circuit radiator and a first three-way water valve which are connected in sequence.

[0007] According to the above scheme, the warm air water circuit includes an engine, a second heat exchanger, and a warm air core which are connected in sequence.

[0008] According to the above scheme, a low-pressure air PTC is arranged in the heater core.

[0009] According to the above scheme, a fan is included to enhance the heat exchange effect between the motor circuit radiator, the external heat exchanger and the air.

[0010] The present invention further provides a hybrid vehicle passenger compartment direct cooling and direct heating thermal management method implemented by using the hybrid vehicle passenger compartment direct cooling and direct heating thermal management system described above, comprising: In response to a passenger compartment heating demand, the compressor is controlled to be turned on so that the refrigerant flows from the compressor through the in-vehicle condenser, the in-vehicle heat exchanger, and then returns to the compressor; or the compressor is controlled to be turned on so that the refrigerant flows from the compressor through the in-vehicle condenser, the in-vehicle heat exchanger, the in-vehicle evaporator, and then returns to the compressor; In response to the passenger compartment cooling demand, the compressor is controlled to start, so that the refrigerant flows from the compressor through the condenser, the outdoor heat exchanger, the indoor evaporator and then returns to the compressor.

[0011] According to the above scheme, in response to the heating demand of the passenger compartment, the compressor is controlled to start, so that the refrigerant flows from the compressor through the in-vehicle condenser, the out-vehicle heat exchanger, the first heat exchanger and then returns to the compressor. At the same time, the multi-way water valve is controlled to connect the motor water circuit and the battery water circuit in series.

[0012] The present invention also provides a car provided with the hybrid vehicle passenger compartment direct cooling and heating thermal management system described above.

[0013] The beneficial effect of the present invention is that the present invention couples the refrigerant circuit with the motor water circuit and the battery water circuit respectively through a heat exchanger, so that the refrigerant circuit can not only complete the cooling and heating of the passenger compartment through the operation of the compressor, but also recover the waste heat of the motor and the battery through the heat exchanger, thereby realizing efficient utilization of the heat of the power system and improving the vehicle's endurance while meeting the heating requirements of the passenger compartment.

[0014] Furthermore, the present invention couples the heater water circuit including the engine with the battery water circuit through a heat exchanger, so that the battery water circuit can effectively use the waste heat of the engine to heat the battery, thereby reducing the battery's self-heating power and increasing the battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a direct cooling and direct heating thermal management system for a hybrid vehicle passenger compartment according to a first embodiment of the present invention; Figure 2 This is a flow chart of a direct cooling and heating thermal management method for a hybrid vehicle passenger compartment according to a third embodiment of the present invention.

[0016] In the figure: 1-battery, 2-engine, 3-compressor, 4-in-vehicle condenser, 5-low-pressure air PTC, 6-first electronic expansion valve, 7-first stop valve, 8-out-vehicle heat exchanger, 9-motor circuit radiator, 10-fan, 11-second stop valve, 12-second electronic expansion valve, 13-in-vehicle evaporator, 14-third electronic expansion valve, 15-motor water pump, 16-first three-way water valve, 17-four-way water valve, 18-first heat exchanger, 19-battery water pump, 20-second three-way water valve, 21-motor, 22-second heat exchanger, 23-heat core. DETAILED DESCRIPTION

[0017] Embodiment 1: See also Figure 1 , a direct cooling and direct heating thermal management system for a hybrid vehicle passenger compartment, comprising: a refrigerant circuit, a motor 21 water circuit, a battery 1 water circuit, and a heater water circuit; The refrigerant circuit includes a compressor 3, an in-vehicle condenser 4, an out-vehicle heat exchanger 8, an in-vehicle evaporator 13, and a first heat exchanger 18 connected through pipes and valves; The water circuit of the motor 21 is connected to the water circuit of the battery 1 through a multi-way water valve; The refrigerant circuit exchanges heat with the battery 1 water circuit through the first heat exchanger 18; The battery 1 water circuit exchanges heat with the heater water circuit via the second heat exchanger 22 . Further, the refrigerant circuit comprises: A first refrigerant circuit consisting of a compressor 3, an in-vehicle condenser 4, a combination valve, an out-vehicle heat exchanger 8, and a second stop valve 11 connected in sequence; A refrigerant second circuit consisting of a compressor 3, an in-vehicle condenser 4, a combination valve, an out-vehicle heat exchanger 8, a second electronic expansion valve 12, and an in-vehicle evaporator 13 connected in sequence; A third refrigerant circuit consisting of a compressor 3, an in-vehicle condenser 4, a combination valve, an out-vehicle heat exchanger 8, a third electronic expansion valve 14, and a first heat exchanger 18 connected in sequence; The combination valve comprises a first stop valve 7 and a first electronic expansion valve 6 connected in parallel; The control of each component in the refrigerant circuit includes: starting and stopping and speed adjustment of the compressor 3, opening and closing of the first stop valve 7 / the second stop valve 11, and position adjustment of the first electronic expansion valve 6 / the second electronic expansion valve 12 / the third electronic expansion valve 14.

[0018] Furthermore, the battery 1 water circuit includes: The first water circuit of the battery 1 is composed of the battery 1, the four-way water valve 17, the first heat exchanger 18, the second three-way water valve 20, and the battery water pump 19 which are connected in sequence; the first water circuit of the battery 1 is used for the self-circulation of the battery 1; The second water circuit of the battery 1 is composed of the battery 1, the four-way water valve 17, the first heat exchanger 18, the second three-way water valve 20, and the second heat exchanger 22 which are connected in sequence; the second water circuit of the battery 1 is used for heating circulation of the battery 1; The control of each component in the water circuit of the battery 1 includes: duty cycle adjustment of the battery water pump 19 and position adjustment of the second three-way water valve 20 .

[0019] Further, the water circuit of the motor 21 includes: The first water circuit of the motor 21 is composed of the motor water pump 15, the motor 21, the four-way water valve 17, and the first three-way water valve 16 which are connected in sequence; the first water circuit of the motor 21 is used for the waste heat utilization cycle of the motor 21; The second water circuit of the motor 21 is composed of the motor water pump 15, the motor 21, the motor 21 circuit radiator 9, and the first three-way water valve 16 which are connected in sequence; the second water circuit of the motor 21 is used for the heat dissipation cycle of the motor 21; The control of each component in the water circuit of the motor 21 includes: duty cycle adjustment of the motor water pump 15 , position adjustment of the four-way water valve 17 , and position adjustment of the first three-way water valve 16 .

[0020] Furthermore, the warm air water circuit includes an engine 2, a second heat exchanger 22, and a warm air core 23 which are connected in sequence.

[0021] Furthermore, the system includes a fan 10 for enhancing the heat exchange effect between the motor 21 circuit radiator 9, the vehicle external heat exchanger 8 and the air; the fan 10 is a component of the motor 21 water circuit, and the control of the motor 21 water circuit also includes speed regulation of the fan 10.

[0022] In a preferred embodiment of the present invention, the system further comprises the following sensing elements: A pressure sensor disposed at the inlet of the compressor 3 is used to continuously monitor the low pressure of the refrigerant at the inlet of the compressor 3; A first temperature and pressure sensor disposed at the refrigerant outlet of the in-vehicle condenser 4 is used to continuously monitor the refrigerant pressure (high pressure) and temperature at the refrigerant outlet of the in-vehicle condenser 4; A second temperature and pressure sensor disposed at the inlet of the second electronic expansion valve 12 and the third electronic expansion valve 14, for continuously monitoring the refrigerant pressure and temperature before the second electronic expansion valve 12 and the third electronic expansion valve 14; A first temperature sensor disposed at the outlet of the compressor 3 is used to continuously monitor the refrigerant temperature at the outlet of the compressor 3; A second temperature sensor disposed at the air outlet of the warm air core 23, for continuously monitoring the air outlet temperature of the warm air core 23; The third temperature sensor disposed at the water outlet of the motor 21 is used to continuously monitor the outlet water temperature of the motor 21 .

[0023] Embodiment 2: Existing hybrid vehicle models generally use a high-voltage PTC5 (Positive Temperature Coefficient, referring to semiconductor materials or components with a large positive temperature coefficient) heating method and an engine 2 auxiliary heating method for heating the battery 1 and the passenger compartment. This heating method has high energy consumption, low COP (energy efficiency ratio), and high hardware cost.

[0024] The principle of this embodiment is basically the same as that of the first embodiment. On the basis of the first embodiment, in order to solve the above-mentioned technical problems, this embodiment provides a direct cooling and direct heating thermal management system for the passenger compartment of a hybrid vehicle, in which the heater core 23 is provided with a low-pressure air PTC5; the low-pressure air PTC5 is used to be activated when there is a demand for heating the passenger compartment, and heats the air outlet of the heater core 23.

[0025] When efficient heating is needed in extremely cold areas, the compressor 3 can be turned on and the cooling and heating functions can be enabled at the same time. Combined with the waste heat of the engine 2 and the low-pressure air PTC5 heating, the heating needs of the passenger compartment in extremely cold areas can be met.

[0026] Embodiment three: Based on the hybrid vehicle passenger compartment direct cooling and direct heating thermal management system described in Example 1, this embodiment provides a hybrid vehicle passenger compartment direct cooling and direct heating thermal management method to achieve different passenger compartment thermal management requirements, see Figure 2 , the method comprising: S1. In response to the passenger compartment heating demand, the compressor 3 is controlled to be turned on, so that the refrigerant flows from the compressor 3 through the in-vehicle condenser 4 and the out-vehicle heat exchanger 8 in sequence and then returns to the compressor 3; or the compressor 3 is controlled to be turned on, so that the refrigerant flows from the compressor 3 through the in-vehicle condenser 4, the out-vehicle heat exchanger 8, the in-vehicle evaporator 13 in sequence and then returns to the compressor 3; S2. In response to the cooling demand of the passenger compartment, the compressor 3 is controlled to start, so that the refrigerant flows from the compressor 3 through the condenser, the external heat exchanger 8, the internal evaporator 13 in sequence, and then returns to the compressor 3.

[0027] The control process of step S1 is respectively conventional heating of the passenger compartment and heating of the passenger compartment under low temperature environment; When the passenger compartment is heated in a conventional manner, the first electronic expansion valve 6 is opened, the first stop valve 7 is closed, the second stop valve 11 is opened, and the second electronic expansion valve 12 and the third electronic expansion valve 14 are closed. At this time, the refrigerant passes through the in-vehicle condenser 4 in sequence, is throttled by the first electronic expansion valve 6, evaporates through the out-vehicle heat exchanger 8, and then flows back to the compressor 3 through the second stop valve 11; When heating the passenger compartment under low temperature conditions, the first electronic expansion valve 6 is closed, the first stop valve 7 is opened, the external heat exchanger 8 does not exchange heat, the second electronic expansion valve 12 is opened, the third electronic expansion valve 14 is closed, and the second stop valve 11 is closed. At this time, the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the external heat exchanger 8, the electronic expansion valve, and the in-vehicle evaporator 13 at one time; at this time, the cooling and heating functions of the refrigerant circuit are turned on at the same time. Since the external environment is too low, heat cannot be absorbed from the external environment, so the compressor 3 works to convert mechanical energy into heat energy. Although cooling and heating are turned on at the same time, the heating capacity is greater than the cooling capacity (because of the law of conservation of energy, the total heat added by the refrigerant circuit is approximately equal to the work done by the compressor 3); The control process of step S2 is conventional cooling of the passenger compartment, at which time the first stop valve 7 is opened, the first electronic expansion valve 6 is closed, the second electronic expansion valve 12 is opened, the third electronic expansion valve 14 is closed, and the second stop valve 11 is closed; at this time, the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the out-vehicle heat exchanger 8, the second electronic expansion valve 12, the in-vehicle evaporator 13 in sequence, and returns to the compressor 3.

[0028] Furthermore, in response to the heating demand of the passenger compartment, the compressor 3 is controlled to start, so that the refrigerant flows from the compressor 3 through the in-vehicle condenser 4, the out-vehicle heat exchanger 8, the first heat exchanger 18 in sequence and then returns to the compressor 3. At the same time, the multi-way water valve is controlled to connect the water circuit of the motor 21 in series with the water circuit of the battery 1.

[0029] In a preferred embodiment of the present invention, the method further comprises the following control modes: 1) Battery heating mode When the engine 2 is running, the three-way water valve is controlled to connect the first water circuit of the battery 1 and the second water circuit of the battery 1; at this time, the waste heat of the engine 2 is transferred to the water circuit of the battery 1 through the second heat exchanger 22 and heats the battery 1.

[0030] When the engine 2 is not running, the self-heating function of the battery 1 is enabled, and the power of the battery 1 is converted into heat energy. At this time, the COP is 1.

[0031] It is understandable that in a low temperature environment (such as -22°C), the engine 2 can be operated to heat the battery 1, and the self-heating function of the battery 1 is enabled at the same time, and the COP is 1 at this time.

[0032] 2) Dehumidification mode The dehumidification modes include heating dehumidification, cooling dehumidification, and cooling and heating at the same time with dehumidification.

[0033] In the heating and dehumidification mode, the first electronic expansion valve 6 is opened, the first stop valve 7 is closed, the second stop valve 11 is opened, and the second electronic expansion valve 12 and the third electronic expansion valve 14 are closed. At this time, the refrigerant passes through the in-vehicle condenser 4 in turn, is throttled by the first electronic expansion valve 6, evaporates through the outdoor heat exchanger 8, and then flows back to the compressor 3 through the second stop valve 11.

[0034] In the refrigeration and dehumidification mode (suitable for high ambient temperature), the first stop valve 7 is opened, the first electronic expansion valve 6 is closed, the second electronic expansion valve 12 is opened, the third electronic expansion valve 14 is closed, and the second stop valve 11 is closed; at this time, the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the outdoor heat exchanger 8, the second electronic expansion valve 12, the in-vehicle evaporator 13 in sequence, and returns to the compressor 3.

[0035] In the dehumidification mode when cooling, heating and cooling are turned on at the same time, the first stop valve 7 is opened, the first electronic expansion valve 6 is closed, the second electronic expansion valve 12 is opened, the third electronic expansion valve 14 is closed, and the second stop valve 11 is closed; at this time, the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the outdoor heat exchanger 8, the second electronic expansion valve 12, the in-vehicle evaporator 13 in sequence, and returns to the compressor 3; at the same time, the low-pressure air PTC5 is turned on to heat the outlet air.

[0036] 3) Defrost mode In the defrost mode, the first electronic expansion valve 6 is opened, the first stop valve 7 is closed, the second stop valve 11 is opened, and the second electronic expansion valve 12 and the third electronic expansion valve 14 are closed. At this time, the refrigerant passes through the in-vehicle condenser 4 in sequence, is throttled by the first electronic expansion valve 6, evaporates through the out-vehicle heat exchanger 8, and then flows back to the compressor 3 through the second stop valve 11; 4) Passenger compartment battery hybrid heating mode In the passenger compartment battery hybrid heating mode, the first electronic expansion valve 6 is opened, the first stop valve 7 is closed, the second stop valve 11 is opened, and the second electronic expansion valve 12 and the third electronic expansion valve 14 are closed. At this time, the refrigerant passes through the in-vehicle condenser 4 in sequence, is throttled by the first electronic expansion valve 6, evaporates through the out-vehicle heat exchanger 8, and then flows back to the compressor 3 through the second stop valve 11; When the engine 2 is running, the three-way water valve is controlled to connect the first water circuit of the battery 1 and the second water circuit of the battery 1; at this time, the waste heat of the engine 2 is transferred to the water circuit of the battery 1 through the second heat exchanger 22 and heats the battery 1.

[0037] When the engine 2 is not running, the self-heating function of the battery 1 is enabled, and the power consumed by the battery 1 is converted into heat energy.

[0038] It is understandable that in a low temperature environment, the engine 2 can be operated to heat the battery 1, while the self-heating function of the battery 1 is enabled.

[0039] In a preferred embodiment of the present invention, the heating capacity of the passenger compartment and the battery 1 can be distributed by controlling the three-way water valve.

[0040] 5) Motor waste heat heating mode In the motor waste heat heating mode, the compressor 3 is turned on, the first stop valve 7 is turned on, the first electronic expansion valve 6 is turned off, the third electronic expansion valve 14 is turned on, the second electronic expansion valve 12 is turned off, and the second stop valve 11 is turned off; at this time, the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the out-vehicle heat exchanger 8, the third electronic expansion valve 14, the first heat exchanger 18 in sequence, and flows back to the compressor 3; The first three-way water valve is controlled to disconnect the second water circuit of the motor 21 (i.e., the combustion and heating cycle of the motor 21 is stopped), the four-way water valve 17 is controlled to connect the water circuit of the motor 21 and the water circuit of the battery 1, and the battery water pump 19 and the motor water pump 15 are started at the same time.

[0041] In this mode, compared with the method of using the water circuit of the motor 21 to heat the passenger compartment in the prior art, the present invention absorbs the heat of the water circuit of the motor 21 through the first heat exchanger 18, and then uses the refrigerant to heat the passenger compartment; through the recovery of the motor waste heat, or the heat energy generated by the motor's reduced efficiency heating is fully utilized, it can reduce the heating energy consumption during pure electric driving, and provide sufficient heat source for battery heating under extremely low temperature conditions, thereby increasing the charging speed. In addition, under low temperature conditions, the waste heat of the motor 21 can also be used to heat the battery 1 (the opening and closing of the third electronic expansion valve 14 can be controlled so that the waste heat of the motor 21 can be supplied to the battery 1 for heating first), so that the waste heat of the motor 21 is fully utilized.

[0042] 6) Battery cooling and passenger compartment heating mode In the battery cooling passenger compartment heating mode, the compressor 3 is turned on, the first stop valve 7 is turned on, the first electronic expansion valve 6 is turned off, the third electronic expansion valve 14 is turned on, the second electronic expansion valve 12 is turned off, and the second stop valve 11 is turned off; the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the out-vehicle heat exchanger 8, the third electronic expansion valve 14, and the first heat exchanger 18 in sequence, and flows back to the compressor 3.

[0043] 7) Battery cooling mode In the battery cooling mode, the compressor 3 is turned on, the first stop valve 7 is turned on, the first electronic expansion valve 6 is turned off, the third electronic expansion valve 14 is turned on, the second electronic expansion valve 12 is turned off, and the second stop valve 11 is turned off; the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the out-vehicle heat exchanger 8, the third electronic expansion valve 14, the first heat exchanger 18 in sequence, and returns to the compressor 3.

[0044] 8) Hybrid Refrigeration In the mixed refrigeration mode, the compressor 3 is turned on, the first stop valve 7 is turned on, the first electronic expansion valve 6 is turned off, the second electronic expansion valve 12 is turned on, the third electronic expansion valve 14 is turned on, and the second stop valve 11 is turned off; the refrigerant passes through the in-vehicle condenser 4, the first stop valve 7, the out-vehicle heat exchanger 8, the second electronic expansion valve 12, the in-vehicle evaporator 13, and the first heat exchanger 18 in sequence and returns to the compressor 3.

[0045] Embodiment 4: This embodiment provides a car, wherein the car is provided with the hybrid vehicle passenger compartment direct cooling and direct heating thermal management system described in the third embodiment.

[0046] Embodiment five: This embodiment provides a computer device, such as a smart phone, tablet computer, laptop computer, desktop computer, rack server, blade server, tower server or cabinet server (including an independent server or a server cluster composed of multiple servers) that can execute programs. The computer device of this embodiment includes at least but is not limited to: a memory and a processor that can communicate with each other through a system bus.

[0047] In this embodiment, the memory (i.e., readable storage medium) includes flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM). The memory may also be an external storage device of a computer device, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device. Of course, the memory may also include both the internal storage unit of the computer device and its external storage device. In this embodiment, the memory is generally used to store the operating system and various application software installed on the computer device, such as the program code of the direct cooling and direct heating thermal management system of the hybrid vehicle passenger compartment in the third embodiment. In addition, the memory may also be used to temporarily store various data that have been output or are to be output.

[0048] In some embodiments, the processor may be a central processing unit (CPU), a controller, a microcontroller, a microprocessor, or other data processing chip. The processor is generally used to control the overall operation of a computer device. In this embodiment, the processor is used to run the program code stored in the memory or process data, such as running the direct cooling and direct heating thermal management system for the passenger compartment of a hybrid vehicle to implement the direct cooling and direct heating thermal management method for the passenger compartment of a hybrid vehicle in the first embodiment.

[0049] Embodiment six: The present application also provides a computer-readable storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a disk, an optical disk, a server, an App application store, etc., on which a computer program is stored, and the program realizes corresponding functions when executed by a processor. The computer-readable storage medium of this embodiment is used to store the program code of the direct cooling and direct heating thermal management system of the hybrid vehicle passenger compartment, and when executed by the processor, the direct cooling and direct heating thermal management method of the hybrid vehicle passenger compartment in the first embodiment is realized.

[0050] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0051] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A direct cooling and heating thermal management system for a hybrid vehicle passenger compartment, characterized in that: include: Refrigerant circuit, motor water circuit, battery water circuit, heater water circuit; The refrigerant circuit includes a compressor, an in-vehicle condenser, an out-vehicle heat exchanger, an in-vehicle evaporator, and a first heat exchanger connected through pipes and valves; The motor water circuit is connected to the battery water circuit through a multi-way water valve; The refrigerant circuit exchanges heat with the battery water circuit through the first heat exchanger; The battery water circuit exchanges heat with the heater water circuit through the second heat exchanger.

2. The hybrid vehicle passenger compartment direct cooling and direct heating thermal management system according to claim 1, characterized in that: The refrigerant circuit includes: A first refrigerant circuit consisting of a compressor, an in-vehicle condenser, a combination valve, an out-vehicle heat exchanger, and a second stop valve connected in sequence; A refrigerant second circuit consisting of a compressor, an in-vehicle condenser, a combination valve, an out-vehicle heat exchanger, a second electronic expansion valve, and an in-vehicle evaporator connected in sequence; A third refrigerant circuit consisting of a compressor, an in-vehicle condenser, a combination valve, an out-vehicle heat exchanger, a third electronic expansion valve, and a first heat exchanger connected in sequence; The combined valve comprises a first stop valve and a first electronic expansion valve which are connected in parallel.

3. The hybrid vehicle passenger compartment direct cooling and direct heating thermal management system according to claim 1, characterized in that: The battery water circuit includes: A battery first water circuit consisting of a battery, a four-way water valve, a first heat exchanger, a second three-way water valve, and a battery water pump connected in sequence; The second water circuit of the battery is composed of a battery, a four-way water valve, a first heat exchanger, a second three-way water valve and a second heat exchanger which are connected in sequence.

4. The hybrid vehicle passenger compartment direct cooling and direct heating thermal management system according to claim 1, characterized in that: The motor water circuit includes: A first water circuit for the motor composed of a motor water pump, a motor, a four-way water valve, and a first three-way water valve connected in sequence; The second water circuit of the motor is composed of a motor water pump, a motor, a motor circuit radiator and a first three-way water valve which are connected in sequence.

5. The hybrid vehicle passenger compartment direct cooling and direct heating thermal management system according to claim 1, characterized in that: The warm air water circuit includes an engine, a second heat exchanger, and a warm air core which are connected in sequence.

6. The hybrid vehicle passenger compartment direct cooling and direct heating thermal management system according to claim 5, characterized in that: A low-pressure air PTC is provided in the heater core.

7. The hybrid vehicle passenger compartment direct cooling and direct heating thermal management system according to claim 5, characterized in that: Includes a fan for enhancing the heat exchange effect between the motor circuit radiator, the external heat exchanger and the air.

8. A hybrid vehicle passenger compartment direct cooling and heating thermal management method implemented by using the hybrid vehicle passenger compartment direct cooling and heating thermal management system according to any one of claims 1 to 7, characterized in that: include: In response to the passenger compartment heating demand, the compressor is controlled to start, so that the refrigerant flows from the compressor through the in-vehicle condenser, the in-vehicle heat exchanger, and then returns to the compressor; Or control the compressor to start, so that the refrigerant flows from the compressor through the condenser inside the vehicle, the heat exchanger outside the vehicle, the evaporator inside the vehicle, and then returns to the compressor; In response to the passenger compartment cooling demand, the compressor is controlled to start, so that the refrigerant flows from the compressor through the condenser, the outdoor heat exchanger, the indoor evaporator and then returns to the compressor.

9. The direct cooling and heating thermal management method for a hybrid vehicle passenger compartment according to claim 8, characterized in that: include: In response to the heating demand of the passenger compartment, the compressor is controlled to start, so that the refrigerant flows from the compressor through the in-vehicle condenser, the out-vehicle heat exchanger, the first heat exchanger and then returns to the compressor. At the same time, the multi-way water valve is controlled to connect the motor water circuit and the battery water circuit in series.

10. An automobile, characterized in that: A hybrid vehicle passenger compartment direct cooling and heating thermal management system as described in any one of claims 1-7 is provided.

Images