Thermal Management System and Vehicle

Abstract

The thermal management system and automobile of the embodiment of the present invention relate to the field of new energy vehicle technology, wherein the thermal management system includes a heat exchanger, a battery circuit and a power battery provided in the battery circuit, a warm air circuit and a warm air core provided in the warm air circuit; the heat exchanger has a first channel and a second channel, and the fluid in the first channel and the fluid in the second channel can exchange heat. The battery circuit and the warm air circuit are connected in parallel and in series with the first channel. The battery stack circuit is connected in series with the second channel. Particularly, at least one of the first channel and the second channel is connected in series with a heater. Through the above arrangement, the operating temperature of the battery stack and the power battery can be maintained to ensure rapid starting of the automobile in a low temperature environment, and it can also improve the comfort of the driver and passengers, reduce energy waste, improve automobile efficiency, and increase automobile endurance.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a thermal management system and a vehicle. Background Art

[0002] With the growing advocacy of energy conservation and environmental protection, electric vehicles have steadily increased their share of the automotive market. Compared to traditional fuel vehicles, pure electric vehicles suffer from a limited range, leading to the emergence of hybrid vehicles. Among these, hydrogen fuel cell vehicles are a hotly researched category, namely hydrogen-electric hybrids. These utilize hydrogen and oxygen (air) reacting in a fuel cell stack to generate electricity, which then charges the power battery. The power battery then drives the motor. Alternatively, the electricity generated by the fuel cell stack is used to directly drive the motor, thereby extending the vehicle's range.

[0003] As for adaptability in cold regions or winter, the battery stack and power battery perform poorly in low-temperature environments, which can affect the vehicle's starting. Ensuring a smooth vehicle start in low-temperature environments is a pressing issue. Summary of the Invention

[0004] The object of the present invention is to provide a thermal management system and a car, which can quickly start the car in a low-temperature environment.

[0005] In a first aspect, the present invention provides a thermal management system comprising:

[0006] A heat exchanger having a first channel and a second channel, wherein a fluid in the first channel and a fluid in the second channel can exchange heat;

[0007] A battery circuit and a power battery provided in the battery circuit;

[0008] A warm air pipeline and a warm air core provided in the warm air pipeline, wherein the battery pipeline and the warm air pipeline are connected in parallel and then in series with the first channel, and the heat of the warm air core can enter the automobile air duct of the air conditioner;

[0009] A fuel cell pipeline and a fuel cell provided in the fuel cell pipeline, wherein the fuel cell pipeline is connected in series with the second channel;

[0010] At least one of the first channel and the second channel is connected in series with a heater.

[0011] In an optional embodiment, the thermal management system further includes:

[0012] a first main pipe, wherein a water inlet end of the first main pipe is connected to a water outlet end of the first channel;

[0013] a first three-way valve, wherein a first valve port of the first three-way valve is connected to the water outlet of the first main pipeline, a second valve port of the first three-way valve is connected to the water inlet of the battery pipeline, and a third valve port of the first three-way valve is connected to the water inlet of the warm air pipeline;

[0014] The water outlet end of the battery pipeline and the water outlet end of the warm air pipeline are both connected to the water inlet end of the first channel.

[0015] In an optional embodiment, the thermal management system further includes:

[0016] a second main pipe, to which the water outlet of the battery pipe and the water outlet of the warm air pipe are both connected;

[0017] a second three-way valve, wherein a first valve port of the second three-way valve is connected to the water outlet of the second main line, and a second valve port of the second three-way valve is connected to the water inlet of the first channel;

[0018] A first branch pipeline, wherein a water inlet end of the first branch pipeline is connected to the third valve port of the second three-way valve, and a water outlet end of the first branch pipeline is connected to the first main pipeline.

[0019] In an optional embodiment, the thermal management system further includes:

[0020] a first temperature detecting element, provided in the second main pipeline and located downstream of the water outlet end of the battery pipeline and the water outlet end of the warm air pipeline;

[0021] The second temperature detection component is provided in the fuel cell stack pipeline and is located between the water inlet end of the second channel and the fuel cell stack.

[0022] In an optional embodiment, the first main line is provided with a first heater, and the water outlet end of the first branch line is located between the first heater and the water outlet end of the first channel.

[0023] In an optional embodiment, the thermal management system further includes:

[0024] The third temperature detecting component is provided in the first main pipeline and is located between the water outlet end of the first branch pipeline and the first heater.

[0025] In an optional embodiment, the thermal management system further includes:

[0026] a third three-way valve, wherein a first valve port of the third three-way valve is connected to the water outlet of the battery pipeline, a second valve port of the third three-way valve is connected to the water inlet of the second main pipeline, and the water outlet of the warm air pipeline is located between the second three-way valve and the third three-way valve;

[0027] a second branch pipeline, wherein the water inlet end of the second branch pipeline is connected to the third valve port of the third three-way valve, the water outlet end of the second branch pipeline is connected to the battery pipeline, and is located between the first three-way valve and the power battery;

[0028] a battery cooler, provided in the second branch pipe;

[0029] The fourth temperature detection component is provided in the battery pipeline and is located between the water outlet end of the second branch pipeline and the battery.

[0030] In an optional embodiment, the thermal management system further includes:

[0031] a fourth three-way valve, wherein a first valve port of the fourth three-way valve is connected to the water outlet of the second channel, a second valve port of the fourth three-way valve is connected to the water inlet of the stack pipeline, and the water outlet of the stack pipeline is connected to the water inlet of the first channel;

[0032] a heat dissipation pipeline and a radiator provided in the heat dissipation pipeline, wherein the water inlet end of the heat dissipation pipeline is connected to the third valve port of the fourth three-way valve, and the water outlet end of the heat dissipation pipeline is connected to the fuel cell stack pipeline and is located between the fuel cell stack and the fourth three-way valve;

[0033] The second temperature detecting component is provided in the fuel cell stack pipeline and is located between the water inlet of the second channel and the fuel cell stack.

[0034] In an optional embodiment, the fuel cell stack pipeline is provided with a second heater, and the water outlet end of the heat dissipation pipeline is located between the second heater and the fuel cell stack.

[0035] In a second aspect, the present invention provides an automobile comprising a thermal management system as described in any one of the aforementioned embodiments.

[0036] The thermal management system and automobile of the embodiments of the present invention can ensure the operating temperature of the battery stack and the power battery to ensure the rapid start of the automobile in a low-temperature environment. It can also improve the comfort of the driver and passengers, reduce energy waste, improve automobile efficiency, and increase automobile endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 Schematic diagram of the structure of the thermal management system according to an embodiment of the present invention.

[0039] Icons: 10-heat exchanger; 12-first channel; 14-second channel; 20-first main line; 201-first heater; 203-third temperature detection element; 22-second main line; 221-first temperature detection element; 223-second water pump; 30-first branch line; 32-second branch line; 321-battery cooler; 40-first three-way valve; 42-second three-way valve; 44-third three-way valve; 46-fourth three-way valve; 50-battery line; 501-power battery; 503-fourth temperature detection element; 504-charger; 505-first water pump; 60-heater line; 601-heater core; 603-fan; 70-stack line; 701-stack; 703-second temperature detection element; 705-second heater; 707-third water pump; 80-heating line; 801-radiator. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0045] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0047] Please refer to Figure 1 An embodiment of the present invention provides a thermal management system comprising a heat exchanger 10, a battery circuit 50 and a power battery 501 disposed therein, a heater circuit 60 and a heater core 601 disposed therein. The heat exchanger 10 has a first channel 12 and a second channel 14, wherein fluids within the first channel 12 and within the second channel 14 can exchange heat. The battery circuit 50 and the heater circuit 60 are connected in parallel and in series with the first channel 12. The stack circuit 70 is connected in series with the second channel 14. A heater is connected in series with at least one of the first channel 12 and the second channel 14.

[0048] Based on the above, through the heater connected in series to at least one of the first channel 12 and the second channel 14, the fluid in the first channel 12 and the fluid in the second channel 14 can exchange heat. Therefore, the fluid in the battery stack pipeline 70 can heat the battery stack 701 to ensure the operating temperature of the battery stack 701, thereby ensuring the stable operation of the battery stack 701. The fluid in the battery pipeline 50 can heat the power battery 501 to maintain the operating temperature of the power battery 501, thereby ensuring the stable operation of the power battery 501, thereby ensuring that the car starts quickly in a low temperature environment. The fluid in the warm air pipeline 60 can heat the warm air core 601, and the heat of the warm air core 601 can be transported to the car air-conditioning duct, thereby heating the car cockpit and passenger compartment, maintaining the temperature of the car cockpit and passenger compartment, and improving the comfort of the driver and passengers. In addition, the heat exchanger 10 reduces the waste of fluid heat in each pipeline, improves the efficiency of the car, and increases the endurance. Among them, since the warm air pipeline 60 and the battery pipeline 50 are connected in parallel and then in series with the first channel 12, and the battery stack pipeline 70 is connected in series with the second channel 14, the battery stack 701, the warm air core 601 and the battery can be heated simultaneously or selectively heated in an independent manner, so that the thermal management system can meet different usage requirements.

[0049] Among them, the temperature of the fluid in the warm air duct 60 is transferred to the warm air core 601, heating the warm air core 601, and then combined with the fan 603 to force air to blow through the warm air core 601, so that the heat absorbed by the warm air core 601 from the warm air duct 60 is sent into the car air-conditioning duct, and then into the car cockpit and passenger compartment, thereby providing heating.

[0050] Therefore, the thermal management system of the present invention can ensure the operating temperature of the battery stack 701 and the power battery 501 to ensure the rapid start of the car in a low-temperature environment, and can also improve the comfort of the driver and passengers, reduce energy waste, improve the efficiency of the car, and increase the car's endurance.

[0051] Furthermore, the thermal management system also includes a first main line 20 and a first three-way valve 40. The water inlet of the first main line 20 is connected to the water outlet of the first channel 12. The first valve port of the first three-way valve 40 is connected to the water outlet of the first main line 20, the second valve port of the first three-way valve 40 is connected to the water inlet of the battery line 50, and the third valve port of the first three-way valve 40 is connected to the water inlet of the heater line 60. The water outlets of the battery line 50 and the heater line 60 are both connected to the water inlet of the first channel 12. Thus, the battery line 50 and the heater line 60 are connected in parallel via the first main line 20 and the first three-way valve 40. The first three-way valve 40 can selectively connect the water outlet of the first main line 20 to one of the water inlet of the battery line 50 and the water inlet of the battery line 50 or connect both of them at the same time. Moreover, the first three-way valve 40 can also cut off the water outlet of the first main line 20 from the water inlets of the battery line 50 and the heater line 60.

[0052] The thermal management system also includes a second main line 22, a second three-way valve 42, and a first branch line 30. The water outlets of the battery line 50 and the heater line 60 are both connected to the second main line 22. The first valve port of the second three-way valve 42 is connected to the water outlet of the second main line 22, and the second valve port of the second three-way valve 42 is connected to the water inlet of the first channel 12. The water inlet of the first branch line 30 is connected to the third valve port of the second three-way valve 42, and the water outlet of the first branch line 30 is connected to the first main line 20. Thus, the fluid in the battery line 50 and the fluid in the warm air line 60 are merged through the second main line 22 and then passed into the second three-way valve 42. The second three-way valve 42 can make the water outlet end of the second main line 22 selectively connected to one of the water inlet ends of the first channel 12 and the water inlet ends of the first branch line 30 or both of them simultaneously, and the second three-way valve 42 can also cut off the water outlet end of the second main line 22 from the water inlet ends of the first channel 12 and the water inlet ends of the first branch line 30.

[0053] The opening or closing of each valve port of the first three-way valve 40 and the second three-way valve 42 can be determined based on the fluid temperature in the second main line 22 and the fluid temperature in the stack line 70. Therefore, the thermal management system also includes a first temperature detection element 221 and a second temperature detection element 703. The first temperature detection element 221 is provided in the second main line 22 and is located downstream of the water outlet of the battery line 50 and the water outlet of the warm air line 60. The second temperature detection element 703 is provided in the stack line 70 and is located between the water inlet of the second channel 14 and the stack 701.

[0054] In this embodiment, the first main line 20 is provided with a first heater 201, and the outlet of the first branch line 30 is located between the first heater 201 and the outlet of the first channel 12. Therefore, when the first heater 201 is activated, it can heat the fluid entering the first main line 20 from the outlet of the first channel 12, thereby increasing the temperature of the fluid passing through the first three-way valve 40.

[0055] The start or stop of the first heater 201 is determined based on the temperature of the fluid flowing from the water outlet of the first channel 12 to the first heater 201. Therefore, the thermal management system also includes a third temperature detection component 203, which is provided in the first main line 20 and is located between the water outlet of the first branch line 30 and the first heater 201.

[0056] To cool the fluid in the battery line 50 when it's hot, the thermal management system also includes a third three-way valve 44, a second branch line 32, and a battery cooler 321. The first valve port of the third three-way valve 44 is connected to the water outlet of the battery line 50, and the second valve port of the third three-way valve 44 is connected to the water inlet of the second main line 22. The water outlet of the warm air line 60 is located between the second three-way valve 42 and the third three-way valve 44. That is, the water outlet of the battery line 50 is connected to the water inlet of the second main line 22 via the first and third valve ports of the third three-way valve 44. Furthermore, the water outlet of the warm air line 60 is connected between the water inlet and outlet of the second main line 22. The water inlet of the second branch line 32 is connected to the third valve port of the third three-way valve 44. The water outlet of the second branch line 32 is connected to the battery line 50 and is located between the first three-way valve 40 and the power battery 501. The battery cooler 321 is located in the second branch line 32. After startup, it can reduce the temperature of the fluid in the second branch line 32, thereby lowering the temperature of the fluid after it merges with the fluid in the battery line 50, thereby lowering the temperature of the fluid entering the power battery 501 and cooling the power battery 501. The third three-way valve 44 can selectively connect the water outlet of the battery line 50 to either the water inlet of the second branch line or the water inlet of the second main line 22, or both. The third three-way valve 44 can also cut off the water outlet of the battery line 50 from the water inlet of the second branch line and the water inlet of the second branch line 32. Among them, the start or shutdown of the battery cooler 321 and whether the valve ports of the third three-way valve 44 are open can be determined by the fluid temperature in the battery pipeline 50. Therefore, a fourth temperature detection component 503 is also provided in the battery pipeline 50. The fourth temperature detection component 503 is located between the water outlet end of the second branch pipeline 32 and the battery.

[0057] In addition, it should be noted that the battery cooler 321 can introduce refrigerant from the automobile air conditioning system, and the refrigerant absorbs heat from the fluid in the second branch pipe 32 , thereby reducing the temperature of the fluid in the second branch pipe 32 .

[0058] The thermal management system also includes a fourth three-way valve 46, a first port of which is connected to the water outlet of the second channel 14, and a second port of which is connected to the water inlet of the stack pipeline 70. The water outlet of the stack pipeline 70 is connected to the water inlet of the first channel 12. A heat dissipation pipeline 80 and a radiator 801 disposed within the heat dissipation pipeline 80 are connected to the third port of the fourth three-way valve 46. The water outlet of the heat dissipation pipeline 80 is connected to the stack pipeline 70 and is located between the stack 701 and the fourth three-way valve 46. Thus, the fourth three-way valve 46 can selectively connect the water outlet of the second channel 14 to either or both of the water inlets of the stack pipeline 70 and the heat dissipation pipeline 80. Alternatively, the water outlet of the second channel 14 can be completely disconnected from both the water inlets of the stack pipeline 70 and the heat dissipation pipeline 80. After the radiator 801 is started, the temperature of the fluid in the heat dissipation pipeline 80 can be reduced, so that the fluid in the heat dissipation pipeline 80 merges with the fluid in the fuel cell pipeline 70 and enters the fuel cell 701, thereby reducing the temperature of the fuel cell 701.

[0059] In addition, the stack circuit 70 is provided with a second heater 705, and the water outlet of the heat dissipation circuit 80 is located between the second heater 705 and the stack 701. This allows the temperature of the stack circuit 70 to be increased after the second heater 705 is activated, thereby heating the stack 701 and meeting the vehicle's rapid start-up requirements in low-temperature environments. That is, in this embodiment, heaters are connected in series with both the first channel 12 and the second channel 14, i.e., the first channel 12 is connected in series with the first heater 201, and the second channel 14 is connected in series with the second heater 705. Of course, in some embodiments, only the first channel 12 may be connected in series with the first heater 201, or only the second channel 14 may be connected in series with the second heater 705.

[0060] It should be noted that the opening or closing of each valve port of the third three-way valve 44 , the start or stop of the radiator 801 , and the start and stop of the second heater 705 may be determined based on the temperature detected by the second temperature detection element 703 .

[0061] Moreover, the battery pipeline 50 is also provided with a charger 504, which is located downstream of the water outlet end of the second branch pipeline 32, that is, the charger 504 is located between the water outlet end of the second branch pipeline 32 and the third three-way valve 44, so that the fluid in the battery pipeline 50 can cool or heat the charger 504.

[0062] In addition, to ensure the flow of fluids within each pipeline, the thermal management system also includes a first water pump 505, a second water pump 223, and a third water pump 707. The first water pump 505 is provided in the battery pipeline 50 and is used to direct the fluid within the battery pipeline 50 from the first three-way valve 40 to the third three-way valve 44, and to direct the fluid within the second branch pipeline 32 into the battery pipeline 50. The second water pump 223 is provided in the second main pipeline 22 and is used to direct the fluid within the battery pipeline 50 and / or the fluid within the heater pipeline 60 from the first three-way valve 40 to the second three-way valve 42. The third water pump 707 is provided in the stack pipeline 70. The water outlet of the heat dissipation pipeline 80 is located between the third water pump 707 and the fourth three-way valve 46. The third water pump 707 is used to direct the fluid within the stack pipeline 70 and / or the fluid within the heat dissipation pipeline 80 from the fourth three-way valve 46 to the second channel 14.

[0063] Based on the above, the thermal management system of this embodiment includes at least the following operating modes:

[0064] 1. Stack low temperature start-up heating

[0065] When the second temperature detected by the second temperature detection component 703 is lower than the first preset stack temperature, the first valve port and the second valve port of the fourth three-way valve 46 are controlled to be connected, and the third valve port is cut off, the second heater 705 is started, and the fan 603 is stopped, thereby heating the stack 701 so that the stack 701 can quickly heat up and start.

[0066] Of course, in order to heat the stack 701 to the first preset stack temperature more quickly, the first three-way valve 40 and the second three-way valve 42 can also be controlled, the fan 603 can be stopped, and the first heater 201 can be started to further increase the fluid temperature in the stack pipeline 70 through the heat exchanger 10.

[0067] 2. The cockpit and passenger compartment require air conditioning and heating:

[0068] The first valve port and the third valve port of the first three-way valve 40 are controlled to be connected, and the second valve port is controlled to be blocked.

[0069] If the first temperature detected by the first temperature detector 221 is lower than the second temperature detected by the second temperature detector 703, the first and second valve ports of the second three-way valve 42 are controlled to be open, and the third valve port is cut off, so that the fluid in the first channel 12 can absorb the heat of the fluid in the second channel 14 through the heat exchanger 10 and heat up, thereby heating the heater core 601. After the fan 603 is started, the heat of the heater core 601 is blown to the air conditioning duct, thereby heating the interior of the vehicle (cockpit and passenger compartment). In addition, based on the third temperature detected by the third temperature detector 203, the first heater 201 can be controlled to heat the fluid in the first main channel 20 so that the temperature inside the vehicle and the temperature of the battery stack 701 meet the requirements.

[0070] If the first temperature is greater than or equal to the second temperature, the first valve port and the third valve port of the second three-way valve 42 are controlled to be connected, and the second valve port is cut off, thereby avoiding heating of the fluid in the stack pipeline 70 through the heat exchanger 10 and saving energy.

[0071] 3. Power battery 501 needs to be heated:

[0072] The first valve port and the second valve port of the first three-way valve 40 are controlled to be connected, and the third valve port is controlled to be blocked.

[0073] If the second temperature is greater than the preset temperature, the first, second, and third valve ports of the second three-way valve 42 are all controlled to be open, and the ratio of the second three-way valve 42 is adjusted accordingly based on the third temperature to bring the third temperature closer to the preset temperature, thereby bringing the temperature at the inlet of the power battery 501 (i.e., the fourth temperature detected by the fourth temperature detection element 503) closer to the preset temperature. If the third temperature is greater than the preset temperature, the first heater 201 is controlled to heat the fluid in the first main line 20, bringing the temperature at the inlet of the power battery 501 closer to the preset temperature.

[0074] If the second temperature is lower than the preset temperature, the first valve port and the second valve port of the second three-way valve 42 can be controlled to be connected, and the third valve port can be blocked, so that the fluid in the first channel 12 can absorb the heat of the fluid in the second channel 14 and heat up through the heat exchanger 10. In addition, the first heater 201 can be controlled to heat the fluid in the first main line 20 according to the third temperature, thereby heating the power battery 501, so that the fourth temperature approaches the preset temperature.

[0075] 4. The vehicle requires both air conditioning and heating, and also requires heating of the power battery 501:

[0076] The first valve port, the second valve port and the third valve port of the first three-way valve 40 are controlled to be connected.

[0077] If the first temperature is lower than the second temperature, the first and second ports of the second three-way valve 42 can be opened, while the third port is closed. This allows the fluid in the first channel 12 to absorb heat from the fluid in the second channel 14 through the heat exchanger 10. Furthermore, the first heater 201 can be controlled to heat the fluid in the first main line 20, raising the temperature of the fluid. The fluid then enters the battery line 50 and the heater line 60, heating the heater core 601 and the power battery 501, respectively. The fan 603 is activated to bring the vehicle interior to the desired temperature. Furthermore, to prevent the power battery 501 from overheating, the first, second, and third ports of the third three-way valve 44 are all opened, and the battery cooler 321 is activated. This prevents the fourth temperature from continuously increasing, but instead approaches the preset temperature.

[0078] If the first temperature is greater than or equal to the second temperature, the first and third ports of the second three-way valve 42 are controlled to be open, while the second port is blocked. This prevents the heat exchanger 10 from heating the fluid in the stack pipeline 70, thus saving energy. Furthermore, to prevent the power battery 501 from overheating, the first, second, and third ports of the third three-way valve 44 are controlled to be open, and the battery cooler 321 is activated. This prevents the fourth temperature from continuously increasing, but instead approaches the preset temperature.

[0079] It should be noted that in the 1-4 working states of the above examples, if the second temperature is greater than the second preset stack temperature, the first valve port and the third valve port of the fourth three-way valve 46 are controlled to be connected, the second valve port is cut off, the radiator 801 is started, and the second heater 705 is stopped to reduce the temperature of the stack 701 and prevent the stack 701 from exceeding the normal operating temperature range between the first preset stack temperature and the second preset stack temperature.

[0080] Based on the above thermal management system, an embodiment of the present invention further provides an automobile, which includes the above thermal management system and thus also has corresponding elements and effects, which will not be described in detail here.

[0081] In summary, the operating temperature of the battery stack 701 and the power battery 501 can be guaranteed to ensure rapid starting of the vehicle in a low-temperature environment, and it can also improve the comfort of the driver and passengers, reduce energy waste, improve vehicle efficiency, and increase vehicle endurance.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal management system, characterized in that: include: A heat exchanger having a first channel and a second channel, wherein a fluid in the first channel and a fluid in the second channel can exchange heat; A battery circuit and a power battery provided in the battery circuit; A warm air pipeline and a warm air core provided in the warm air pipeline, wherein the battery pipeline and the warm air pipeline are connected in parallel and then in series with the first channel, and the heat of the warm air core can enter the automobile air duct of the air conditioner; A fuel cell pipeline and a fuel cell provided in the fuel cell pipeline, wherein the fuel cell pipeline is connected in series with the second channel; wherein at least one of the first channel and the second channel is connected in series with a heater; The thermal management system further comprises: a first main pipe, wherein a water inlet end of the first main pipe is connected to a water outlet end of the first channel; a first three-way valve, wherein a first valve port of the first three-way valve is connected to the water outlet of the first main pipeline, a second valve port of the first three-way valve is connected to the water inlet of the battery pipeline, and a third valve port of the first three-way valve is connected to the water inlet of the warm air pipeline; The water outlet end of the battery pipeline and the water outlet end of the warm air pipeline are both connected to the water inlet end of the first channel; The thermal management system further comprises: a second main pipe, to which the water outlet of the battery pipe and the water outlet of the warm air pipe are both connected; a second three-way valve, wherein a first valve port of the second three-way valve is connected to the water outlet of the second main line, and a second valve port of the second three-way valve is connected to the water inlet of the first channel; a first branch pipeline, wherein a water inlet end of the first branch pipeline is connected to the third valve port of the second three-way valve, and a water outlet end of the first branch pipeline is connected to the first main pipeline; The thermal management system further comprises: a third three-way valve, wherein a first valve port of the third three-way valve is connected to the water outlet of the battery pipeline, a second valve port of the third three-way valve is connected to the water inlet of the second main pipeline, and the water outlet of the warm air pipeline is located between the second three-way valve and the third three-way valve; a second branch pipeline, wherein the water inlet end of the second branch pipeline is connected to the third valve port of the third three-way valve, the water outlet end of the second branch pipeline is connected to the battery pipeline, and is located between the first three-way valve and the power battery; a battery cooler, provided in the second branch pipe; The fourth temperature detection component is provided in the battery pipeline and is located between the water outlet end of the second branch pipeline and the battery.

2. The thermal management system according to claim 1, characterized in that The thermal management system further comprises: a first temperature detecting element, provided in the second main pipeline and located downstream of the water outlet end of the battery pipeline and the water outlet end of the warm air pipeline; The second temperature detection component is provided in the fuel cell stack pipeline and is located between the water inlet end of the second channel and the fuel cell stack.

3. The thermal management system according to claim 2, characterized in that: The first main pipeline is provided with a first heater, and the water outlet end of the first branch pipeline is located between the first heater and the water outlet end of the first channel.

4. The thermal management system according to claim 3, characterized in that: The thermal management system further comprises: The third temperature detecting component is provided in the first main pipeline and is located between the water outlet end of the first branch pipeline and the first heater.

5. The thermal management system according to claim 1, wherein: The thermal management system further comprises: a fourth three-way valve, wherein a first valve port of the fourth three-way valve is connected to the water outlet of the second channel, a second valve port of the fourth three-way valve is connected to the water inlet of the stack pipeline, and the water outlet of the stack pipeline is connected to the water inlet of the first channel; a heat dissipation pipeline and a radiator provided in the heat dissipation pipeline, wherein the water inlet end of the heat dissipation pipeline is connected to the third valve port of the fourth three-way valve, and the water outlet end of the heat dissipation pipeline is connected to the fuel cell stack pipeline and is located between the fuel cell stack and the fourth three-way valve; The second temperature detecting component is provided in the fuel cell stack pipeline and is located between the water inlet of the second channel and the fuel cell stack.

6. The thermal management system according to claim 5, characterized in that: The fuel cell stack pipeline is provided with a second heater, and the water outlet end of the heat dissipation pipeline is located between the second heater and the fuel cell stack.

7. An automobile, characterized in that: The thermal management system comprises the thermal management system according to any one of claims 1 to 6.

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