Hybrid vehicle thermal management system and control method thereof

Abstract

This invention belongs to the field of vehicle thermal management technology, and relates to a thermal management system and control method for hybrid vehicles. It connects a compression refrigeration circuit, an adsorption refrigeration circuit, and a cold storage and supply circuit through a three-channel cold storage device. The three fluids are refrigerant from the compression refrigeration circuit, adsorbed refrigerant from the adsorption refrigeration circuit, and coolant from the cold storage and supply circuit, respectively. The adsorption reactor of the adsorption refrigeration circuit is connected to the engine exhaust waste heat recovery path, and the exhaust waste heat drives the desorption reaction of the adsorbent in the adsorption reactor. The low-temperature heat exchange circuit includes a low-temperature heat exchanger connected to the adsorption reactor and various target temperature control components. The air side of the low-temperature heat exchanger acts as a radiator when the air is ambient air, and as a heater when the air is heated by the adsorption reactor. This invention improves the temperature control capability of the thermal management system under extreme environments, reduces the overall vehicle thermal management energy consumption, and can significantly improve the vehicle's all-encompassing environmental adaptability and energy utilization rate.

Description

Technical Field

[0001] This invention belongs to the field of vehicle thermal management technology, specifically relating to a thermal management system and control method for hybrid vehicles. Background Technology

[0002] New energy vehicles, including pure electric vehicles and hybrid vehicles, are currently a research hotspot in the vehicle field, especially hybrid vehicles, which combine the advantages of pure electric vehicles and traditional internal combustion engine vehicles. Thermal management technology for hybrid vehicles is one of the key technologies for the entire vehicle. It is crucial for ensuring the safe and reliable operation of the vehicle's powertrain, electrical system, transmission system, and other subsystems with heat dissipation or heating requirements, directly affecting the vehicle's mobility and overall energy consumption in various complex environments.

[0003] Hybrid vehicles are characterized by a variety of heat source components, a wide operating temperature range, and asynchronous operation of these components. Specifically, the processes of engine heat generation and cold start preheating, motor heat generation, and temperature control of the battery pack and passenger compartment exhibit contradictions in terms of timing, temperature, and heat flow. Therefore, achieving efficient vehicle thermal management presents a significant challenge. In recent years, numerous patent reports have been published regarding the thermal management of hybrid vehicles, primarily focusing on engine waste heat recovery, system integration, and control optimization. Patent CN116278626A provides a thermal management system for hybrid vehicles that recovers and utilizes waste heat from motor and electronic control components and the engine, making the vehicle more energy-efficient. Patent CN117698367A discloses a method and system for optimizing the thermal management of hybrid vehicles. When the engine is stopped, the waste heat generated by the engine operation can be used as a heat source for the passenger compartment by controlling the operation of the engine water pump. Patent CN117656769A discloses a thermal management control method for hybrid vehicles. In the engine's high-temperature circuit, a thermos bottle and a PTC heater are arranged parallel to each other to provide heat energy to the passenger compartment's heater, thereby reducing vehicle energy consumption and increasing driving range. Patent CN117246121A discloses a thermal management control method, system, and vehicle for plug-in hybrid vehicles. This method enables the transfer and effective utilization of waste heat from the engine, motor, battery, intake, and exhaust systems, improving battery temperature recovery at low temperatures and reducing passenger compartment heating power consumption, thus enhancing vehicle power and driving range at low temperatures. Specifically, the system incorporates a waste heat exchanger with energy storage material, installed in the exhaust pipe or muffler, to absorb heat from engine exhaust and introduce it into the heating circuit, achieving a continuous and stable heat supply. In hybrid vehicles, engine exhaust waste heat can be used for direct heating in winter or for cooling. Patent CN104896787A discloses an adsorption-type refrigeration device driven by the waste heat of engine exhaust. This device is suitable for refrigerated trucks and uses the waste heat of the high-temperature exhaust gas of the engine as the driving heat source to achieve a cooling output of -10°C. However, due to the fluctuation of exhaust gas temperature and flow during vehicle operation, the cooling output power will fluctuate and become uncontrollable.

[0004] The above-disclosed patents cover the direct recovery and utilization of engine exhaust waste heat, stable supply after storage, and driving adsorption refrigeration devices for cooling. However, none of them comprehensively consider the matching of heat generation and heat / cooling of various components of hybrid vehicles in terms of time, temperature, and power. Therefore, it is difficult to achieve efficient recovery and utilization of engine waste heat to meet the diversified heating and cooling needs of various vehicle components. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The technical problem to be solved by the present invention is to overcome at least one of the defects of the prior art and provide a thermal management system and control method for a hybrid vehicle.

[0007] (II) Technical Solution

[0008] To solve the above technical problems, the present invention provides a hybrid vehicle thermal management system, which includes: a compression refrigeration circuit, an adsorption refrigeration circuit, a cold storage and supply circuit, a low-temperature heat exchange circuit, and an engine exhaust waste heat recovery path.

[0009] The compression refrigeration circuit, adsorption refrigeration circuit, and cold storage and supply circuit share a three-channel cold storage device.

[0010] The three-channel cold storage device is connected in parallel with the crew compartment, battery pack, motor and its accessories through a cold storage and cooling supply circuit. Three sets of three-way valves are installed on the three parallel paths of the cold storage and cooling supply circuit. The three-way valves and the low-temperature heat exchanger form the low-temperature heat exchange circuit.

[0011] The low-temperature heat exchanger, the adsorption reactor of the adsorption refrigeration circuit, and the waste heat recovery passage of the engine exhaust gas are connected in series via a three-way valve.

[0012] The adsorption refrigeration circuit includes an adsorption reactor, a condenser, a throttling valve, an evaporator, and valves.

[0013] The adsorption reactor is filled with an adsorbent pair, and the evaporator is located inside the three-channel cold storage device. The adsorbent pair consists of a solid adsorbent and an adsorbent refrigerant, which undergo alternating adsorption and desorption reactions. The desorption reaction occurs when the adsorbent pair is heated by engine exhaust gas, and the released adsorbent refrigerant gas enters the condenser to condense into an adsorbent refrigerant liquid. When the solid adsorbent is cooled by ambient air, the adsorbent refrigerant liquid enters the evaporator through a throttling valve to evaporate and release cold energy. The solid adsorbent of the adsorbent pair is one or more of metal halides, activated carbon, metal-organic frameworks, and porous graphite, and the adsorbent refrigerant is ammonia, methanol, or ethanol.

[0014] The three-channel cold storage device consists of a three-stream heat exchanger and a cold storage material. The three-stream heat exchanger contains three independent fluid pipelines, allowing three fluids to flow in a three-in-three-out manner. The three fluids correspond to the refrigerant in the compression refrigeration circuit, the adsorbed refrigerant in the adsorption refrigeration circuit, and the coolant in the cold storage and cooling circuit, respectively. The heat exchange tubes of the three-stream heat exchanger and the cold storage material are parallel flow flat tubes, parallel flow microchannel flat tubes, finned tubes, or round tubes. The cold storage material includes water, n-tetradecane, n-hexadecane, salt hydrates, and other single or multi-component phase change materials with melting points ranging from -5 to 20°C. One or more of expanded graphite, foamed metal, and carbon nanotubes are added inside the phase change material as thermal conductivity enhancers.

[0015] The charging process of the three-channel cold storage device is completed by the compression refrigeration circuit and the adsorption refrigeration circuit together or separately. The releasing process of the three-channel cold storage device is that the coolant transfers the cold energy to the crew compartment, battery pack or motor and its accessories through the cold storage and supply circuit.

[0016] The connection between the cold storage and cooling circuit and the low-temperature heat exchange circuit and the crew compartment, battery pack, motor and accessories can be independently switched through a three-way valve according to actual needs to meet the thermal management requirements of each target temperature control component; the coolant inside the cold storage and cooling circuit and the low-temperature heat exchange circuit is any one of the following: low-freezing-point brine solution, ethylene glycol solution, or commercial antifreeze.

[0017] In the engine exhaust waste heat recovery path, the high-temperature exhaust gas discharged from the engine is connected to the adsorption reactor of the adsorption refrigeration circuit through the exhaust gas pipeline and a three-way valve. The three-way valve controls the high-temperature exhaust gas to enter the high-temperature reactor to heat the adsorbent inside or to be directly discharged into the environment. The inlet and outlet of the adsorption reactor are equipped with two other three-way valves. When it is necessary to cool the adsorbent, the two three-way valves at the inlet and outlet of the adsorption reactor are opened to allow ambient air to flow through the adsorption reactor to cool the adsorbent. The flow of ambient air is driven by air pumps placed at the inlet and outlet of the adsorption reactor.

[0018] The cryogenic heat exchanger of the cryogenic heat exchange circuit and the adsorption reactor of the adsorption refrigeration circuit are connected by two three-way valves and pipelines. The cryogenic heat exchanger and the adsorption reactor can operate independently or in series: when they operate independently, the gas flowing in the cryogenic heat exchanger is ambient air, which is introduced into the cryogenic heat exchanger through an air pump. In this case, the cryogenic heat exchanger acts as a radiator for the motor and accessories. When they operate in series, the gas flowing in the cryogenic heat exchanger is engine exhaust gas flowing through the adsorption reactor or ambient air heated by the adsorption reactor. In this case, the cryogenic heat exchanger acts as a heater or preheater for the passenger compartment, battery pack, motor and accessories, and / or the engine and its accessories.

[0019] Furthermore, the present invention also provides a control method for the thermal management system of the hybrid vehicle, the control method comprising, according to the classification of operating modes:

[0020] (1) Cooling-Storage-Supply Mode under Summer Vehicle Operating Conditions: The compression refrigeration circuit and the adsorption refrigeration circuit simultaneously or separately provide cooling capacity to the three-channel storage device; the refrigerant flows through the three-way valve of the compression refrigeration circuit and the first in-vehicle heat exchanger by controlling the three-way valve of the compression refrigeration circuit; the adsorption refrigeration circuit operates simultaneously, and the exhaust heat of the engine drives the desorption process. The generated gas adsorbs the refrigerant, condenses it in the condenser, and then evaporates and cools it in the evaporator in the three-channel storage device. The cold energy is stored in the three-channel storage device; the cooling capacity of the three-channel storage device is transferred to the in-vehicle heat exchanger and battery pack in the passenger compartment as needed via the coolant. The temperature control of the motor and accessories is selected according to the ambient temperature, choosing between the storage and supply circuit or the low-temperature heat exchange circuit. The heat generated by the engine and accessories is dissipated into the environment through the high-temperature radiator.

[0021] (2) Cooling mode under summer parking and shutdown conditions: The cold energy in the three-channel cold storage device is transferred to the heat exchanger in the passenger compartment through the coolant to continuously cool the passenger compartment.

[0022] (3) Heating mode under winter vehicle operating conditions: The refrigerant flow direction of the compression refrigeration circuit is controlled by the four-way valve and the three-way valve, so that the evaporator in the passenger compartment becomes the condenser. At the same time, the condensed refrigerant does not flow through the three-channel cold storage device. The adsorption reactor of the adsorption refrigeration circuit undergoes a desorption reaction of the adsorbent under the drive of the engine exhaust waste heat. The released refrigerant gas is stored in the condenser, evaporator or pipeline after condensation. The working mode of the low temperature heat exchanger is adjusted according to the heating / cooling requirements of the target temperature control components: When all target temperature control components need to be heated, the high temperature exhaust gas of the engine is allowed to flow through the adsorption reactor and enter the low temperature heat exchanger to heat the coolant by controlling the three-way valve. The coolant transfers heat energy to the target temperature control components as needed. When some target temperature control components need to be heated and others need to be cooled, the internal waste heat is recovered by controlling the three-way valve of the low temperature heat exchange circuit. At the same time, the high temperature exhaust gas waste heat of the engine is used for heating as needed.

[0023] (4) Winter parking conditions for heating and cold start warm-up: The adsorption refrigeration circuit is controlled to produce an evaporation-adsorption process. The adsorption reactor generates adsorption heat. Ambient air is introduced and flows through the adsorption reactor. After the air is heated, it flows through the low-temperature heat exchanger to heat the coolant. The heated coolant flows as needed in the low-temperature heat exchange circuit to the in-vehicle heat exchanger, battery pack, motor and accessories, and engine and accessories in the passenger compartment.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] (1) This invention introduces heat-driven adsorption refrigeration technology and phase change cold storage technology into the thermal management system of hybrid vehicles. It makes full use of the waste heat of engine exhaust for refrigeration while storing the cold energy, ensuring a continuous and stable supply of cold energy, making full use of the waste heat of engine exhaust, and improving the energy utilization rate of the whole vehicle.

[0027] (2) This invention innovatively adopts a three-channel cold storage device, which consists of a phase change cold storage material and a three-flow heat exchanger with three inlets and three outlets. The three fluid channels are respectively filled with the refrigerant of the compression refrigeration circuit, the refrigerant of the adsorption refrigeration circuit, and the coolant. The temperature and flow rate of each channel can be adjusted independently. As the hub of the vehicle thermal management system, the three-channel cold storage device can greatly improve the flexibility of the thermal management system.

[0028] (3) The adsorption refrigeration system used in this invention can also be used as an adsorption heat storage system, and has a wide operating temperature range. The condensation / evaporation temperature can be as low as tens of degrees below zero Celsius, and the desorption / adsorption temperature can be from tens to hundreds of degrees Celsius. It can both generate heat through adsorption reactions in extremely low temperature environments and generate heat through evaporation and heat absorption in extremely high temperature environments, overcoming the problem of poor adaptability to extreme temperature environments of compression refrigeration systems and greatly improving the all-area environmental adaptability of the thermal management system of hybrid vehicles. Attached Figure Description

[0029] Figure 1 and Figure 7 This is a schematic diagram of a thermal management system for a hybrid vehicle containing an adsorption-type refrigeration circuit and a cold storage device, as shown in the embodiment.

[0030] Figure 2 This is a schematic diagram of the pipeline control of the thermal management system in the summer cooling-storage-supply mode of Example 1;

[0031] Figure 3 This is a schematic diagram showing the switching between the adsorption-type refrigeration circuit and the engine waste heat recovery path in the thermal management of the hybrid vehicle described in Example 1.

[0032] Figure 4 This is a schematic diagram of the cooling storage and supply circuit of the thermal management system for vehicle parking conditions in summer, as shown in Example 1, for cooling the passenger compartment.

[0033] Figure 5 This is a schematic diagram of the pipeline control of the hybrid vehicle thermal management system described in Example 2 under winter heating conditions;

[0034] Figure 6 This is a schematic diagram of the heating and cold start warm-up modes of the hybrid vehicle thermal management system described in Example 2 under long-term parking and shutdown in winter.

[0035] The numbers in the diagram indicate: 1-Compressor; 2-Four-way valve; 3-External heat exchanger; 4-First throttle valve; 5-First three-way valve; 6-Three-channel cold storage device; 7-First in-vehicle heat exchanger; 8-Second throttle valve; 9-Condenser; 10-Adsorption reactor; 11-Valve; 12-First liquid pump; 13-Second in-vehicle heat exchanger; 14-Second three-way valve; 15-Third three-way valve; 16-Fourth three-way valve; 17-Fifth three-way valve; 18-Sixth three-way valve; 19-Seventh three-way valve; 20-Eighth three-way valve; 21-Ninth three-way valve; 22-Second liquid pump; 23-Third liquid pump; 24-Low-temperature heat exchanger; 25-First air pump; 26-First three-way air valve; 27-Second three-way air valve; 28-Second air pump; 29-Third three-way air valve; 30-Third air pump; 31-Fourth three-way air valve; 31-High-temperature heat exchanger. Detailed Implementation

[0036] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0037] To solve the above technical problems, the present invention provides a hybrid vehicle thermal management system, which includes: a compression refrigeration circuit, an adsorption refrigeration circuit, a cold storage and supply circuit, a low-temperature heat exchange circuit, and an engine exhaust waste heat recovery path.

[0038] The compression refrigeration circuit, adsorption refrigeration circuit, and cold storage and supply circuit share a three-channel cold storage device.

[0039] The three-channel cold storage device is connected in parallel with the crew compartment, battery pack, motor and its accessories through a cold storage and cooling supply circuit. Three sets of three-way valves are installed on the three parallel paths of the cold storage and cooling supply circuit. The three-way valves and the low-temperature heat exchanger form the low-temperature heat exchange circuit.

[0040] The low-temperature heat exchanger, the adsorption reactor of the adsorption refrigeration circuit, and the waste heat recovery passage of the engine exhaust gas are connected in series via a three-way valve.

[0041] The adsorption refrigeration circuit includes an adsorption reactor, a condenser, a throttling valve, an evaporator, and valves.

[0042] The adsorption reactor is filled with an adsorbent pair, and the evaporator is located inside the three-channel cold storage device. The adsorbent pair consists of a solid adsorbent and an adsorbent refrigerant, which undergo alternating adsorption and desorption reactions. The desorption reaction occurs when the adsorbent pair is heated by engine exhaust gas, and the released adsorbent refrigerant gas enters the condenser to condense into an adsorbent refrigerant liquid. When the solid adsorbent is cooled by ambient air, the adsorbent refrigerant liquid enters the evaporator through a throttling valve to evaporate and release cold energy. The solid adsorbent of the adsorbent pair is one or more of metal halides, activated carbon, metal-organic frameworks (MOFs), and porous graphite, and the adsorbent refrigerant is ammonia, methanol, or ethanol.

[0043] The three-channel cold storage device consists of a three-stream heat exchanger and a cold storage material. The three-stream heat exchanger contains three independent fluid pipelines, allowing three fluids to flow in a three-in-three-out manner. The three fluids correspond to the refrigerant in the compression refrigeration circuit, the adsorbed refrigerant in the adsorption refrigeration circuit, and the coolant in the cold storage and cooling circuit, respectively. The heat exchange tubes of the three-stream heat exchanger and the cold storage material are parallel flow flat tubes, parallel flow microchannel flat tubes, finned tubes, or round tubes. The cold storage material includes water, n-tetradecane, n-hexadecane, salt hydrates, and other single or multi-component phase change materials with melting points ranging from -5 to 20°C. One or more of expanded graphite, foamed metal, and carbon nanotubes are added inside the phase change material as thermal conductivity enhancers.

[0044] The charging process of the three-channel cold storage device is completed by the compression refrigeration circuit and the adsorption refrigeration circuit together or separately. The releasing process of the three-channel cold storage device is that the coolant transfers the cold energy to the crew compartment, battery pack or motor and its accessories through the cold storage and supply circuit.

[0045] The connection between the cold storage and cooling circuit and the low-temperature heat exchange circuit and the crew compartment, battery pack, motor and accessories can be independently switched through a three-way valve according to actual needs to meet the thermal management requirements of each target temperature control component; the coolant inside the cold storage and cooling circuit and the low-temperature heat exchange circuit is any one of the following: low-freezing-point brine solution, ethylene glycol solution, or commercial antifreeze.

[0046] In the engine exhaust waste heat recovery path, the high-temperature exhaust gas discharged from the engine is connected to the adsorption reactor of the adsorption refrigeration circuit through the exhaust gas pipeline and a three-way valve. The three-way valve controls the high-temperature exhaust gas to enter the high-temperature reactor to heat the adsorbent inside or to be directly discharged into the environment. The inlet and outlet of the adsorption reactor are equipped with two other three-way valves. When it is necessary to cool the adsorbent, the two three-way valves at the inlet and outlet of the adsorption reactor are opened to allow ambient air to flow through the adsorption reactor to cool the adsorbent. The flow of ambient air is driven by air pumps placed at the inlet and outlet of the adsorption reactor.

[0047] The cryogenic heat exchanger of the cryogenic heat exchange circuit and the adsorption reactor of the adsorption refrigeration circuit are connected by two three-way valves and pipelines. The cryogenic heat exchanger and the adsorption reactor can operate independently or in series: when they operate independently, the gas flowing in the cryogenic heat exchanger is ambient air, which is introduced into the cryogenic heat exchanger through an air pump. In this case, the cryogenic heat exchanger acts as a radiator for the motor and accessories. When they operate in series, the gas flowing in the cryogenic heat exchanger is engine exhaust gas flowing through the adsorption reactor or ambient air heated by the adsorption reactor. In this case, the cryogenic heat exchanger acts as a heater or preheater for the passenger compartment, battery pack, motor and accessories, and / or the engine and its accessories.

[0048] Furthermore, the present invention also provides a control method for the thermal management system of the hybrid vehicle, the control method comprising, according to the classification of operating modes:

[0049] (1) Cooling-Storage-Supply Mode under Summer Vehicle Operating Conditions: The compression refrigeration circuit and the adsorption refrigeration circuit simultaneously or separately provide cooling capacity to the three-channel storage device; the refrigerant flows through the three-way valve of the compression refrigeration circuit and the first in-vehicle heat exchanger by controlling the three-way valve of the compression refrigeration circuit; the adsorption refrigeration circuit operates simultaneously, and the exhaust heat of the engine drives the desorption process. The generated gas adsorbs the refrigerant, condenses it in the condenser, and then evaporates and cools it in the evaporator in the three-channel storage device. The cold energy is stored in the three-channel storage device; the cooling capacity of the three-channel storage device is transferred to the in-vehicle heat exchanger and battery pack in the passenger compartment as needed via the coolant. The temperature control of the motor and accessories is selected according to the ambient temperature, choosing between the storage and supply circuit or the low-temperature heat exchange circuit. The heat generated by the engine and accessories is dissipated into the environment through the high-temperature radiator.

[0050] (2) Cooling mode under summer parking and shutdown conditions: The cold energy in the three-channel cold storage device is transferred to the heat exchanger in the passenger compartment through the coolant to continuously cool the passenger compartment.

[0051] (3) Heating mode under winter vehicle operating conditions: The refrigerant flow direction of the compression refrigeration circuit is controlled by the four-way valve and the three-way valve, so that the evaporator in the passenger compartment becomes the condenser. At the same time, the condensed refrigerant does not flow through the three-channel cold storage device. The adsorption reactor of the adsorption refrigeration circuit undergoes a desorption reaction of the adsorbent under the drive of the engine exhaust waste heat. The released refrigerant gas is stored in the condenser, evaporator or pipeline after condensation. According to the heating / cooling requirements of the target temperature control components (the in-vehicle heat exchanger in the passenger compartment, the battery pack, the motor and its accessories), the working mode of the low temperature heat exchanger is adjusted: When all the target temperature control components need to be heated, the high temperature exhaust gas of the engine is allowed to flow through the adsorption reactor and enter the low temperature heat exchanger to heat the coolant by controlling the three-way valve. The coolant transfers heat energy to the target temperature control components as needed. When some target temperature control components need to be heated (such as the passenger compartment and the battery pack) while other components (such as the motor) need to be cooled, the internal waste heat is recovered by controlling the three-way valve of the low temperature heat exchange circuit. At the same time, the high temperature exhaust waste heat of the engine is used for heating as needed.

[0052] (4) Winter parking conditions for heating and cold start warm-up: The adsorption refrigeration circuit is controlled to produce an evaporation-adsorption process. The adsorption reactor generates adsorption heat. Ambient air is introduced and flows through the adsorption reactor. After the air is heated, it flows through the low-temperature heat exchanger to heat the coolant. The heated coolant flows as needed in the low-temperature heat exchange circuit to the in-vehicle heat exchanger, battery pack, motor and accessories, and engine and accessories in the passenger compartment.

[0053] Example 1

[0054] This embodiment proposes a hybrid vehicle thermal management system comprising a compression refrigeration circuit, an adsorption refrigeration circuit, a three-channel cold storage device, an engine exhaust waste heat recovery path, and a low-temperature heat exchange circuit and a cold storage and supply circuit connecting various target temperature control components. The adsorption refrigeration circuit is connected to one channel of the engine exhaust waste heat recovery path and the three-channel cold storage device, converting engine waste heat into cold energy and storing it. The other two channels of the three-channel cold storage device are respectively connected to the compression refrigeration circuit and the cold storage and supply circuit. This invention achieves efficient cooling or heating of the battery, motor, and passenger compartment of the hybrid vehicle using engine exhaust waste heat, adsorption refrigeration, and compression refrigeration technologies. The use of the three-channel cold storage device ensures a stable and controllable supply of cold energy, improves the temperature control capability of the thermal management system under extremely low and high temperature environments, and reduces the system's thermal management power consumption, thereby improving the adaptability and driving range of the hybrid vehicle in extreme environments.

[0055] The objective of this embodiment can be achieved through the following technical solutions:

[0056] A thermal management system for a hybrid vehicle, comprising:

[0057] The compression refrigeration circuit includes a compressor, a four-way valve, an external heat exchanger, a three-way valve, a cold storage heat exchanger section, a first in-vehicle heat exchanger, and refrigerant piping, wherein the three-way valve controls whether the refrigerant flows through the cold storage heat exchanger section.

[0058] The adsorption refrigeration circuit includes an adsorption reactor, a condenser, an expansion valve, an evaporator, valves, and adsorption refrigerant piping. The evaporator is located inside the three-channel cold storage device, and the adsorption reactor is filled with adsorption material.

[0059] The cold storage and cooling circuit includes coolant, liquid pump, heat exchanger, coolant pipeline and several three-way liquid valves. The heat exchanger is located inside the three-channel cold storage device. The coolant obtains cooling capacity from the three-channel cold storage device and is driven by the liquid pump to supply the cooling capacity to the second vehicle heat exchanger, battery pack or motor and accessories as needed.

[0060] The cryogenic heat exchange circuit includes a cryogenic heat exchanger, coolant, coolant piping, liquid pump, several three-way liquid valves, three-way air valves, and an air pump. The cryogenic heat exchanger is a liquid-gas heat exchanger. The function of the cryogenic heat exchanger can be changed by switching the three-way air valves. When ambient air is introduced, it acts as a radiator for the battery pack, motor, and accessories. When air heated by the adsorption reactor or high-temperature exhaust gas flowing through the adsorption reactor is introduced, it acts as a heater. The heated coolant is driven by the liquid pump to provide heat to the second in-vehicle heat exchanger, battery pack, motor, and accessories, and / or engine and accessories.

[0061] The engine exhaust waste heat recovery path includes a high-temperature exhaust gas pipeline, an air pump, an adsorption reactor, and several three-way valves. The three-way valves are used to switch the high-temperature exhaust gas flow through the adsorption reactor or directly into the environment.

[0062] The control methods for the thermal management system of the hybrid vehicle include the following based on the operating mode:

[0063] (1) Cooling-Storage-Supply Mode under Summer Vehicle Operating Conditions: The compression refrigeration circuit and the adsorption refrigeration circuit can simultaneously or individually provide cooling capacity to the three-channel storage device. By controlling the three-way valve of the compression refrigeration circuit, the refrigerant flows through the three-channel storage device and the first in-vehicle heat exchanger; when the adsorption refrigeration circuit is running, the waste heat of the engine exhaust drives the desorption process, and the generated gas adsorbs the refrigerant, which is condensed in the condenser and then evaporated and cooled in the evaporator in the three-channel storage device, and the cooling capacity is stored in the three-channel storage device; the cooling capacity of the three-channel storage device is transferred to the second in-vehicle heat exchanger, battery pack and other components in the passenger compartment as needed by the coolant; the temperature control of the motor and accessories is selected according to the ambient temperature, choosing between the storage refrigeration circuit or the low-temperature heat exchange circuit; the heat generated by the engine and accessories is dissipated to the environment through the high-temperature radiator.

[0064] (2) Cooling mode under summer parking and shutdown conditions: The cold energy in the three-channel cold storage device is transferred to the second in-vehicle heat exchanger in the passenger compartment through the coolant, and the passenger compartment is continuously cooled.

[0065] (3) Heating mode under winter vehicle operating conditions: The passenger compartment is heated by a compression refrigeration circuit or a low-temperature heat exchange circuit, while the battery pack, motor and accessories are heated by an engine waste heat recovery circuit. The refrigerant flow in the compression refrigeration circuit is controlled by four-way and three-way valves, turning the evaporator in the passenger compartment into a condenser. Simultaneously, the condensed refrigerant does not flow through the three-channel cold storage device. In the adsorption refrigeration circuit, the adsorption reactor undergoes a desorption reaction driven by the waste heat from engine exhaust. The released refrigerant gas is condensed and stored in the condenser, evaporator, or piping. The operating mode of the low-temperature heat exchanger is adjusted according to the heating / cooling requirements of the target temperature control components (in-vehicle heat exchangers in the passenger compartment, battery pack, motor, and their accessories): When all target temperature control components require heating, the high-temperature exhaust gas from the engine flows through the adsorption reactor and into the low-temperature heat exchanger to heat the coolant, which then transfers heat to the target temperature control components as needed. When some target temperature control components require heating (such as the passenger compartment and battery pack) while others (such as the motor) require cooling, the internal waste heat is recovered by controlling the three-way valve of the low-temperature heat exchange circuit, and the high-temperature exhaust gas waste heat from the engine is used for heating as needed.

[0066] (4) Heating and cold start warm-up under winter parking and shutdown conditions: The evaporation-adsorption process occurs in the adsorption refrigeration circuit. Adsorption heat is generated inside the adsorption reactor. Ambient air is introduced and flows through the adsorption reactor. After the air is heated, it flows through the low-temperature heat exchanger to heat the coolant. The heated coolant flows to the in-vehicle heat exchanger, battery pack, motor and accessories and engine and accessories in the low-temperature heat exchange circuit as needed.

[0067] In one embodiment of the present invention, the three-channel cold storage heat exchanger contains multiple parallel-flow flat tubes, which are connected in a certain manner by a manifold to form a heat exchanger that allows three fluid channels. Pure phase change cold storage material or composite phase change cold storage material is filled between the flat tubes. The pure phase change cold storage material includes water, n-tetradecane, n-hexadecane, water and salt, and other single or multi-component phase change materials with melting points in the range of -5 to 20°C. The composite phase change cold storage material is formed by adding one or more of expanded graphite, foamed metal, and carbon nanotubes as thermal conductivity enhancers to the above-mentioned pure phase change cold storage material.

[0068] In one embodiment of the present invention, the adsorption refrigeration circuit uses a metal halide-ammonia as a refrigerant pair, wherein the metal halide is filled in the adsorption reactor and ammonia is used as a refrigerant. Ammonia has a low melting point at normal pressure and can evaporate even in extreme low temperature environments, thus having good low temperature environment adaptability. Ammonia has a high gas-liquid phase change enthalpy and a significant evaporative refrigeration effect.

[0069] In one embodiment of the present invention, when the ambient temperature is extremely high in summer (e.g., >40°C), the cooling of the passenger compartment, battery pack, motor and accessories adopts a cold storage and cooling circuit; when the ambient temperature is low in summer (e.g., above 25°C, below 40°C), the cooling of the motor and accessories adopts a low-temperature heat exchanger, while the cooling of the passenger compartment and battery pack adopts a cold storage and cooling circuit; during the parking and shutdown phase, the cooling demand of the passenger compartment is met by the cold storage and cooling circuit.

[0070] In one embodiment of the present invention, when the ambient temperature is extremely low in winter (e.g., < -20°C), during normal driving, the coolant transfers the waste heat from the engine exhaust to the passenger compartment, battery pack, or motor and accessories that require heating via a waste heat recovery path and a low-temperature heat exchange circuit. During the cold start phase after a long period of parking, the adsorption refrigeration circuit is opened, and adsorption heat is generated in the adsorption reactor due to the adsorption reaction. The adsorption heat heats the ambient air and then reheats the coolant via a low-temperature heat exchanger. The coolant then transfers the heat to the engine and accessories for warm-up. If the passenger compartment requires heating during a long period of parking, the adsorption heat can also be used to heat the passenger compartment.

[0071] Example 2

[0072] This embodiment provides a thermal management system for a hybrid vehicle, such as... Figure 1 As shown, it includes:

[0073] The compression refrigeration circuit includes a compressor 1, a four-way valve 2, an external heat exchanger 3, a first throttle valve 4, a three-channel cold storage device 6, an in-vehicle heat exchanger 7, and refrigerant piping. The first throttle valve 4 controls whether the refrigerant flows through the three-channel cold storage device 6. Preferably, the heat exchanger of the three-channel cold storage device is composed of parallel-flow microchannel aluminum flat tubes connected in a specific manner, and the phase change material is a material with a melting point between 0 and 10°C, such as n-tetradecane or water.

[0074] The adsorption refrigeration circuit includes an adsorption reactor 10, a condenser 9, a throttling valve 8, an evaporator, a valve 11, and an adsorption refrigerant pipeline. The evaporator is located inside the three-channel cold storage device 6, and the adsorption reactor is filled with adsorbent material. Preferably, the adsorbent is one or more metal halides such as manganese chloride, calcium chloride, and strontium chloride, and the refrigerant is ammonia.

[0075] The cold storage and cooling circuit includes coolant, a first liquid pump 12, a heat exchanger, coolant pipelines and several three-way liquid valves 14-19. The heat exchanger is located inside the three-channel cold storage device 6. The coolant obtains cooling capacity from the three-channel cold storage device 6 and is driven by the first liquid pump 12 to supply the cooling capacity to the first in-vehicle heat exchanger 3, battery pack or motor and accessories as needed.

[0076] The low-temperature heat exchange circuit includes a low-temperature heat exchanger 24, coolant, coolant piping, a third liquid pump 23, several three-way liquid valves 14-21, a first air pump 25, and a first three-way air valve 26. The low-temperature heat exchanger 24 is a liquid-gas heat exchanger. The function of the low-temperature heat exchanger 24 can be changed by switching the first three-way air valve 26. When ambient air is introduced, it acts as a radiator for the battery pack, motor, and accessories. When air heated by the adsorption reactor 10 or high-temperature exhaust gas flowing through the adsorption reactor 10 is introduced, it acts as a heater. The heated coolant is driven by the third liquid pump 23 to provide heat to the second in-vehicle heat exchanger 13, battery pack, motor and accessories, and engine and accessories.

[0077] The engine exhaust waste heat recovery path includes a high-temperature exhaust pipe, a fourth three-way valve 31, a third air pump 30, a third three-way valve 29, an adsorption reactor 10, a second three-way valve 27, and a second air pump 28. The three-way valves 31, 29, 27, and 26 are used to switch the high-temperature exhaust gas flow through the adsorption reactor 10 or directly to the environment, or flow through the reactor 10 and then through the low-temperature heat exchanger 24.

[0078] The following examples illustrate the control method of the hybrid vehicle thermal management system under different operating modes:

[0079] Example 3

[0080] See details Figure 2During summer vehicle operation, the passenger compartment, battery pack, motor and accessories, and engine and accessories have high cooling demands. The compression refrigeration circuit, adsorption refrigeration circuit, cold storage and supply circuit, low-temperature heat exchange circuit, and engine waste heat circuit are all activated. Cooling of the passenger compartment is achieved by the first in-vehicle heat exchanger 7 and the second in-vehicle heat exchanger 13. Through certain control methods, the cooling capacity of the second in-vehicle heat exchanger 13 is prioritized. Cooling of the battery pack is provided by the three-channel cold storage device 6 through the adjustment of three-way valves 14 and 15. The motor and accessories are cooled either by a low-temperature heat exchange circuit or by the three-channel cold storage device 6, depending on the ambient air temperature. When the ambient temperature is high (e.g., >40℃), the three-way valves 18 and 19 are adjusted to allow the coolant from the three-channel cold storage device 6 to flow through the motor and accessories for cooling. When the ambient temperature is below 40℃, the air pump 25 is turned on, and the three-way air valve 26 and the three-way valves 18 and 19 are adjusted to allow ambient air to cool the coolant in the low-temperature heat exchange circuit, i.e., the heat generated by the motor and accessories is dissipated into the ambient atmosphere through liquid-air heat exchange. The engine and accessories are cooled by the high-temperature radiator 32.

[0081] See details Figure 3 The adsorption reaction 10 in the adsorption refrigeration circuit achieves refrigeration in the adsorption refrigeration channel heat exchanger within the three-channel cold storage device 6 by alternately introducing engine exhaust gas and ambient air. Specifically: Adjust the three-way valves 31, 29, and 27, and turn on the air pump 28 to allow the engine exhaust gas to flow through the adsorption reactor 10 and heat the adsorbent inside. The refrigerant gas released by the adsorbent is condensed into liquid by the condenser 9 and stored in a pipe or storage tank (not shown). When the temperature inside the adsorption reactor rises to a certain level, that is, about 20°C above the equilibrium adsorption temperature, adjust the three-way valve 31 to allow the engine exhaust gas to be directly discharged into the environment. At the same time, adjust the three-way valve 29 and turn on the air pump 30 to allow ambient air to flow through the air pump 30, the three-way valve 29, the adsorption reactor 10, the three-way valve 27, and the air pump 28 in sequence to cool down the adsorption reactor 10. When the temperature drops to about 20°C below the equilibrium adsorption temperature, open the valve 11. At this time, driven by the pressure difference, the liquid adsorbed refrigerant evaporates and absorbs heat through the adsorption-type refrigeration circuit heat exchanger of the three-channel cold storage device 6, absorbing the heat of the phase change cold storage material in the three-channel cold storage device 6, thus realizing the charging and cooling process. The evaporation-adsorption process is judged to be completed by monitoring the outlet temperature of the adsorption refrigeration circuit of the three-channel cold storage device 6. Once it is completed, one cycle is finished. Then, the three-way valves 31, 29, and 27 are switched again to heat the adsorption reactor 10 with the engine exhaust gas, and the above operation is repeated.

[0082] See details Figure 4The method for cooling the passenger compartment under summer parking conditions is as follows: close the compression refrigeration circuit, adsorption refrigeration circuit, low temperature heat exchange circuit and engine exhaust waste heat recovery passage, turn on the liquid pump 12, and adjust the three-way valves 14 and 15 to make the coolant circulate in the cold storage and cooling circuit, and transfer the cold energy in the three-channel cold storage device 6 to the vehicle heat exchanger 13 to achieve continuous cooling of the passenger compartment.

[0083] Example 4

[0084] See details Figure 5 For vehicles operating in low-temperature winter conditions, the passenger compartment and battery pack require heating, while the motor and accessories, as well as the engine and accessories, need to be maintained within a suitable temperature range. The adsorption refrigeration circuit and the cold storage / supply circuit are closed, while the engine exhaust waste heat recovery path and the low-temperature heat exchange circuit are opened. The compression refrigeration circuit may need to be opened depending on the situation. Three-way valves 31, 29, 27, and 26 are adjusted to allow the high-temperature engine exhaust gas to pass sequentially through the adsorption reactor 10 and the low-temperature heat exchanger 24. The coolant circulates within the low-temperature heat exchange circuit driven by the liquid pump 23. Three-way valves 14-19 are adjusted to allow the coolant, heated by the engine exhaust waste heat, to flow through the vehicle's internal heat exchanger 13, the battery pack, and the motor and accessories. Temperature control of the passenger compartment, battery pack, motor, and accessories is achieved by controlling the flow rate of the liquid pump 23 and the opening of the three-way valves 14-19. The engine and accessories dissipate heat using the high-temperature heat exchanger 32 by adjusting three-way valves 20 and 21.

[0085] See details Figure 6To address the passenger compartment heating and cold start warm-up needs during extended parking periods in winter, the engine exhaust waste heat recovery path and adsorption refrigeration circuit are first opened while the vehicle is in motion. The high-temperature exhaust waste heat from the engine heats the adsorbent in the adsorption reactor 10, causing it to desorb. The released refrigerant gas is condensed by the condenser 9 and stored in the evaporator of the adsorption refrigeration circuit in the pipeline and the three-channel cold storage device 6, while valve 11 remains closed. During extended parking periods, the passenger compartment requires heating; and during cold starts, the engine and accessories, battery pack, and motor and accessories require preheating. The heat demand of the former can generally be met by switching the four-way valve 2 to use the in-vehicle heat exchanger 7, which uses a compression refrigeration circuit, as a condenser. However, in extreme low-temperature conditions, such as below -20°C, the heat demand can be met by opening valve 11. The refrigerant evaporation and adsorption process driven by the pressure difference in the adsorption refrigeration circuit can generate an exothermic effect. By opening air pump 30 and adjusting three-way valves 29, 27, and 26, the ambient air flows through adsorption reactor 10 to absorb the heat of adsorption reaction and then flows through low-temperature heat exchanger 24. By opening liquid valve 23 and adjusting three-way valves 14-21, the coolant is heated by hot air in low-temperature heat exchanger 24 and then transfers the heat to one or more of the passenger compartment, battery pack, motor and accessories, and engine and accessories, thus achieving heating and cold start warm-up for the vehicle in winter parking conditions.

[0086] In summary, this invention belongs to the field of vehicle thermal management technology, specifically relating to a thermal management system and control method for a hybrid vehicle. The system includes a compression refrigeration circuit, an adsorption refrigeration circuit, a three-channel cold storage device, an engine exhaust waste heat recovery path, and a low-temperature heat exchange circuit and a cold storage / supply circuit connecting various target temperature control components. The three-channel cold storage device consists of a three-stream heat exchanger and cold storage material, serving as a hub connecting the compression refrigeration circuit, the adsorption refrigeration circuit, and the cold storage / supply circuit. The three streams are refrigerant from the compression refrigeration circuit, adsorbed refrigerant from the adsorption refrigeration circuit, and coolant from the cold storage / supply circuit, respectively. The adsorption reactor of the adsorption refrigeration circuit is connected to the engine exhaust waste heat recovery path, and the exhaust waste heat drives the desorption reaction of the adsorbent in the adsorption reactor. The low-temperature heat exchange circuit mainly includes a low-temperature heat exchanger connected to the adsorption reactor and various target temperature control components. When the air side of the low-temperature heat exchanger is ambient air, it acts as a radiator; when it is heated air from the adsorption reactor, it acts as a heater. This invention enables efficient cooling or heating of the battery, motor, and passenger compartment of a hybrid vehicle by utilizing waste heat from engine exhaust, heat-driven adsorption refrigeration, and compression refrigeration air conditioning. The use of a three-channel cold storage device ensures the stability and flexibility of the thermal management system, improves the temperature control capability of the thermal management system in extreme environments, reduces the overall vehicle thermal management energy consumption, and can significantly improve the vehicle's all-encompassing environmental adaptability and energy utilization rate.

[0087] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A thermal management system for a hybrid vehicle, characterized in that, The hybrid vehicle thermal management system includes: a compression refrigeration circuit, an adsorption refrigeration circuit, a cold storage and supply circuit, a low-temperature heat exchange circuit, and an engine exhaust waste heat recovery path. A compression refrigeration circuit includes a compressor, a four-way valve, an external heat exchanger, a first three-way valve, a cold storage heat exchanger section, a first in-vehicle heat exchanger, and refrigerant piping, wherein the first three-way valve controls whether the refrigerant flows through the cold storage heat exchanger section. An adsorption refrigeration circuit includes an adsorption reactor, a condenser, a throttling valve, an evaporator, valves, and adsorption refrigerant piping. The evaporator is located inside a three-channel cold storage device, and the adsorption reactor is filled with adsorption material. The cold storage and cooling circuit includes coolant, liquid pump, heat exchanger, coolant pipeline and several three-way liquid valves. The heat exchanger is located inside the three-channel cold storage device. The coolant obtains cooling capacity from the three-channel cold storage device and is driven by the liquid pump to supply the cooling capacity to the second vehicle heat exchanger, battery pack or motor and accessories as needed. The cryogenic heat exchange circuit includes a cryogenic heat exchanger, coolant, coolant piping, liquid pump, several three-way liquid valves, three-way air valves, and an air pump. The cryogenic heat exchanger is a liquid-gas heat exchanger. The function of the cryogenic heat exchanger can be changed by switching the three-way air valves. When ambient air is introduced, it acts as a radiator for the battery pack, motor, and accessories. When air heated by the adsorption reactor or high-temperature exhaust gas flowing through the adsorption reactor is introduced, it acts as a heater. The heated coolant is driven by the liquid pump to provide heat to the second in-vehicle heat exchanger, battery pack, motor, and accessories, and / or engine and accessories. The compression refrigeration circuit, adsorption refrigeration circuit, and cold storage and supply circuit share a three-channel cold storage device. The three-channel cold storage device is connected in parallel with the crew compartment, battery pack, motor and its accessories through a cold storage and cooling supply circuit. Three sets of three-way valves are installed on the three parallel paths of the cold storage and cooling supply circuit. The three-way valves and the low-temperature heat exchanger form the low-temperature heat exchange circuit. The low-temperature heat exchanger, the adsorption reactor of the adsorption refrigeration circuit, and the waste heat recovery passage of the engine exhaust gas are connected in series via a three-way valve.

2. The hybrid vehicle thermal management system as described in claim 1, characterized in that, The adsorption reactor is filled with an adsorbent pair, and the evaporator is located inside the three-channel cold storage device. The adsorbent pair consists of a solid adsorbent and an adsorbent refrigerant, which undergo alternating adsorption and desorption reactions. The desorption reaction occurs when the adsorbent pair is heated by engine exhaust gas, and the released adsorbent refrigerant gas enters the condenser to condense into an adsorbent refrigerant liquid. When the solid adsorbent is cooled by ambient air, the adsorbent refrigerant liquid enters the evaporator through a throttling valve to evaporate and release cold energy. The solid adsorbent of the adsorbent pair is one or more of metal halides, activated carbon, metal-organic frameworks, and porous graphite, and the adsorbent refrigerant is ammonia, methanol, or ethanol.

3. The hybrid vehicle thermal management system as described in claim 1, characterized in that, The three-channel cold storage device consists of a three-stream heat exchanger and a cold storage material. The three-stream heat exchanger contains three independent fluid pipelines, allowing three fluids to flow in a three-in-three-out manner. The three fluids correspond to the refrigerant in the compression refrigeration circuit, the adsorbed refrigerant in the adsorption refrigeration circuit, and the coolant in the cold storage and cooling circuit, respectively. The heat exchange tubes of the three-stream heat exchanger and the cold storage material are parallel flow flat tubes, parallel flow microchannel flat tubes, finned tubes, or round tubes. The cold storage material includes water, n-tetradecane, n-hexadecane, salt hydrates, and other single or multi-component phase change materials with melting points in the range of -5 to 20°C. One or more of expanded graphite, foamed metal, and carbon nanotubes are added inside the phase change material as thermal conductivity enhancers.

4. The hybrid vehicle thermal management system as described in claim 1, characterized in that, The charging process of the three-channel cold storage device is completed by the compression refrigeration circuit and the adsorption refrigeration circuit together or separately. The releasing process of the three-channel cold storage device is that the coolant transfers the cold energy to the crew compartment, battery pack or motor and its accessories through the cold storage and supply circuit.

5. The hybrid vehicle thermal management system as described in claim 1, characterized in that, The connection between the cold storage and cooling circuit and the low-temperature heat exchange circuit and the crew compartment, battery pack, motor and its accessories can be independently switched through a three-way valve according to actual needs to meet the thermal management requirements of each target temperature control component; the coolant inside the cold storage and cooling circuit and the low-temperature heat exchange circuit is any one of the following: low-freezing-point brine solution, ethylene glycol solution, or commercial antifreeze.

6. The hybrid vehicle thermal management system as described in claim 1, characterized in that, In the engine exhaust waste heat recovery path, the high-temperature exhaust gas discharged from the engine is connected to the adsorption reactor of the adsorption refrigeration circuit through the exhaust gas pipeline and a three-way valve. The three-way valve controls the high-temperature exhaust gas to enter the high-temperature reactor to heat the adsorbent inside or to be directly discharged into the environment. Two other three-way valves are set at the inlet and outlet of the adsorption reactor. When it is necessary to cool the adsorbent, the two three-way valves at the inlet and outlet of the adsorption reactor are opened to allow ambient air to flow through the adsorption reactor to cool the adsorbent. The flow of ambient air is driven by air pumps placed at the inlet and outlet of the adsorption reactor.

7. The hybrid vehicle thermal management system as described in claim 1, characterized in that, The cryogenic heat exchanger of the cryogenic heat exchange circuit and the adsorption reactor of the adsorption refrigeration circuit are connected by two three-way valves and pipelines. The cryogenic heat exchanger and the adsorption reactor can operate independently or in series: when they operate independently, the gas flowing in the cryogenic heat exchanger is ambient air, which is introduced into the cryogenic heat exchanger through an air pump. In this case, the cryogenic heat exchanger acts as a radiator for the motor and accessories. When they operate in series, the gas flowing in the cryogenic heat exchanger is engine exhaust gas flowing through the adsorption reactor or ambient air heated by the adsorption reactor. In this case, the cryogenic heat exchanger acts as a heater or preheater for the passenger compartment, battery pack, motor and accessories, and / or the engine and its accessories.

8. A control method for a thermal management system of a hybrid vehicle according to any one of claims 1-7, characterized in that, The control methods, classified according to their operating modes, include: (1) Cooling-Storage-Supply Mode under Summer Vehicle Operating Conditions: The compression refrigeration circuit and the adsorption refrigeration circuit simultaneously or separately provide cooling capacity to the three-channel storage device; the refrigerant flows through the three-channel storage device and the first in-vehicle heat exchanger by controlling the first three-way valve of the compression refrigeration circuit; the adsorption refrigeration circuit operates simultaneously, and the exhaust heat of the engine drives the desorption process. The generated gas adsorbs the refrigerant, condenses it in the condenser, and then evaporates and cools it in the evaporator in the three-channel storage device. The cold energy is stored in the three-channel storage device; the cooling capacity of the three-channel storage device is transferred to the in-vehicle heat exchanger and battery pack in the passenger compartment as needed via the coolant. The temperature control of the motor and accessories is selected according to the ambient temperature, choosing between the storage and supply circuit or the low-temperature heat exchange circuit. The heat generated by the engine and accessories is dissipated into the environment through the high-temperature radiator. (2) Cooling mode under summer parking and shutdown conditions: The cold energy in the three-channel cold storage device is transferred to the heat exchanger in the passenger compartment through the coolant to continuously cool the passenger compartment.

9. The control method for the thermal management system of a hybrid vehicle as described in claim 8, characterized in that, The control method further includes: (3) Heating mode under winter vehicle operating conditions: The refrigerant flow direction of the compression refrigeration circuit is controlled by the four-way valve and the first three-way valve, so that the evaporator in the passenger compartment becomes the condenser, and the condensed refrigerant does not flow through the three-channel cold storage device; the adsorption reactor of the adsorption refrigeration circuit undergoes a desorption reaction of the adsorbent under the drive of the engine exhaust waste heat, and the released refrigerant gas is stored in the condenser, evaporator or pipeline after condensation; the working mode of the low temperature heat exchanger is adjusted according to the heating / cooling requirements of the target temperature control components: when all target temperature control components need to be heated, the high temperature exhaust gas of the engine is allowed to flow through the adsorption reactor and enter the low temperature heat exchanger to heat the coolant by controlling the three-way valve, and the coolant transfers heat energy to the target temperature control components as needed; when some target temperature control components need to be heated and other components need to be cooled, the internal waste heat is recovered by controlling the three-way valve of the low temperature heat exchange circuit, and the high temperature exhaust gas waste heat of the engine is used for heating as needed.

10. The control method for the thermal management system of a hybrid vehicle as described in claim 9, characterized in that, The control method further includes: (4) Winter parking conditions for heating and cold start warm-up: The adsorption refrigeration circuit is controlled to produce an evaporation-adsorption process. The adsorption reactor generates adsorption heat. Ambient air is introduced and flows through the adsorption reactor. After the air is heated, it flows through the low-temperature heat exchanger to heat the coolant. The heated coolant flows as needed in the low-temperature heat exchange circuit to the in-vehicle heat exchanger, battery pack, motor and accessories, and engine and accessories in the passenger compartment.

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