Low temperature auxiliary heating system and vehicle

Abstract

The utility model relates to a kind of low-temperature auxiliary heating system and vehicle, comprising: temperature detection module is connected with the electric pile in first thermal management module, temperature detection module is configured to detect the current temperature of electric pile;Second thermal management module includes fuel engine and heat exchange unit, the first end of heat exchange unit is connected with the exhaust manifold of fuel engine, second thermal management module and first thermal management module are connected in parallel by heat exchange unit, second thermal management module is configured to in the case where current temperature is less than first preset temperature, waste gas heat in exhaust manifold is transmitted to first thermal management module by heat exchange unit, to assist heating electric pile. Thus, by heat exchange unit, first thermal management module and second thermal management module are connected in parallel, waste gas heat in exhaust manifold is used to heat electric pile, solve the problem of high energy consumption, long start-up time, loss of fuel cell life in relevant technology, greatly shorten the electric pile start-up duration, reduce battery load.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a low-temperature auxiliary heating system and vehicle. Background Technology

[0002] Fuel cell stack startup typically requires a high operating temperature. When starting at a low temperature below 0°C, the reaction water inside the stack is prone to freezing, hindering startup.

[0003] In related technologies, the temperature is generally increased by either relying on a positive temperature coefficient heater (PTC) to generate heat to provide auxiliary heat to the fuel cell stack, or by controlling the fuel cell stack itself to generate heat through high-current discharge.

[0004] However, the related technologies that use PTC heating or self-heating of the fuel cell stack to increase the temperature are not only energy-intensive but also have long start-up times and may even shorten the lifespan of the fuel cell, which urgently need to be addressed. Utility Model Content

[0005] This invention provides a low-temperature auxiliary heating system and vehicle to solve the problems of high energy consumption, long start-up time, and reduced fuel cell life in related technologies, thereby reducing battery load.

[0006] To achieve the above objectives, the first aspect of this utility model provides a low-temperature auxiliary heating system, comprising: a temperature detection module, a first thermal management module, and a second thermal management module.

[0007] The temperature detection module is connected to the fuel cell stack in the first thermal management module, and the temperature detection module is configured to detect the current temperature of the fuel cell stack. The second thermal management module includes a fuel engine and a heat exchange unit. The first end of the heat exchange unit is connected to the exhaust manifold of the fuel engine. The second thermal management module and the first thermal management module are connected in parallel through the heat exchange unit. The second thermal management module is configured to transfer the heat of the exhaust gas in the exhaust manifold to the first thermal management module through the heat exchange unit when the current temperature is lower than a first preset temperature, so as to assist in heating the fuel cell stack.

[0008] Optionally, the first thermal management module includes a first water pump, a three-way regulating valve, and a thermal management unit, wherein, One end of the first water pump is connected to one end of the cooling fluid of the fuel cell stack; The first end of the three-way regulating valve is connected to the other end of the cooling fluid of the fuel cell stack, and the second end of the three-way regulating valve is connected to one end of the thermal management unit. The other end of the thermal management unit is connected to the other end of the first water pump.

[0009] Optionally, the second thermal management module further includes: a second water pump, wherein, One end of the second water pump is connected to the second end of the heat exchange unit, and the other end of the second water pump is connected to the cooling fluid end of the fuel engine. The third end of the heat exchange unit is connected to the third end of the three-way regulating valve.

[0010] Optionally, the heat exchange unit is provided with an exhaust gas passage and a cooling fluid passage, wherein, One end of the exhaust gas passage is connected to the exhaust manifold of the fuel engine, and the other end of the exhaust gas passage is connected to the third end of the three-way regulating valve. One end of the cooling fluid passage is connected to the other end of the cooling fluid of the fuel engine, and the other end of the cooling fluid passage is connected to one end of the second water pump.

[0011] Optionally, a catalytic combustor is integrated into the exhaust manifold.

[0012] Optionally, the low-temperature auxiliary heating system further includes: A heating component corresponding to the fuel cell stack is configured to provide auxiliary heating for the fuel cell stack when the current temperature is greater than or equal to the first preset temperature and the current temperature is less than the second preset temperature.

[0013] Optionally, the low-temperature auxiliary heating system further includes: A first detection component is connected to the fuel engine and is configured to detect whether the fuel engine is in a faulty state. A communication component, which is connected to the first detection component, is configured to send a fault alert message to a preset mobile terminal when the fuel engine is in the fault state.

[0014] Optionally, the low-temperature auxiliary heating system further includes: The second detection component is connected to the first thermal management module and the second thermal management module respectively, and is used to detect whether there is a cooling fluid leak in the first thermal management module and the second thermal management module. A reminder component, connected to the second detection component, is configured to provide acoustic and / or optical reminders when there is a cooling fluid leak in the first thermal management module or the second thermal management module.

[0015] Optionally, the reminder component includes: An acoustic alert unit is connected to the second detection component and is configured to provide an acoustic alert when there is a cooling fluid leak in the first thermal management module or the second thermal management module. And / or, an optical alert unit, the optical alert unit being connected to the second detection component, the optical alert unit being configured to provide an optical alert when there is a cooling fluid leak in the first thermal management module or the second thermal management module.

[0016] According to the low-temperature auxiliary heating system proposed in this embodiment, the temperature detection module detects the current temperature of the fuel cell stack. When the current temperature is lower than a first preset temperature, the second thermal management module transfers the heat from the exhaust gas in the exhaust manifold to the first thermal management module through a heat exchange unit to assist in heating the fuel cell stack. Thus, by connecting the first and second thermal management modules in parallel through the heat exchange unit and utilizing the heat from the exhaust gas in the exhaust manifold to heat the fuel cell stack, the system solves the problems of high energy consumption, long start-up time, and reduced fuel cell lifespan in related technologies, significantly shortening the fuel cell stack start-up time and reducing the battery load.

[0017] To achieve the above objectives, a second aspect of this utility model provides a vehicle that includes the low-temperature auxiliary heating system shown in the first aspect embodiment.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a block diagram of a low-temperature auxiliary heating system provided according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of a first thermal management module and a second thermal management module according to an embodiment of the present invention; Figure 3 This is a flowchart of a low-temperature auxiliary heating method according to an embodiment of the present invention. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] The low-temperature auxiliary heating system and vehicle proposed according to the embodiments of the present invention will be described below with reference to the accompanying drawings. First, the low-temperature auxiliary heating system proposed according to the embodiments of the present invention will be described with reference to the accompanying drawings.

[0022] Figure 1 This is a block diagram of a low-temperature auxiliary heating system 10 according to an embodiment of the present invention.

[0023] like Figure 1 As shown, the low-temperature auxiliary heating system 10 includes: a temperature detection module 100, a first thermal management module 200, and a second thermal management module 300.

[0024] The temperature detection module 100 is connected to the fuel cell stack in the first thermal management module 200, and the temperature detection module 100 is configured to detect the current temperature of the fuel cell stack. The second thermal management module 300 includes a fuel engine and a heat exchange unit 301. The first end of the heat exchange unit 301 is connected to the exhaust manifold 302 of the fuel engine. The second thermal management module 300 and the first thermal management module 200 are connected in parallel through the heat exchange unit 301. The second thermal management module 300 is configured to transfer the heat of the exhaust gas in the exhaust manifold 302 to the first thermal management module 200 through the heat exchange unit 301 when the current temperature is lower than a first preset temperature, so as to assist in heating the fuel cell stack.

[0025] The current temperature of the fuel cell stack refers to its real-time physical temperature at the current moment. The temperature detection module 100 can be a temperature sensor. The first preset temperature can be a temperature preset by the user, a temperature obtained through a limited number of experiments, or a temperature obtained through a limited number of computer simulations. Exhaust gas heat refers to the heat energy carried by the high-temperature exhaust gas discharged with the engine exhaust manifold during the process of converting chemical energy into mechanical energy through fuel combustion, which is not effectively utilized. Auxiliary heating refers to the control method of supplementing the heating of the fuel cell stack by using an external energy source or recovering energy when the heat generation capacity of the fuel cell stack itself cannot meet the temperature requirements. The heat exchange unit can be a heat exchanger.

[0026] Specifically, the temperature detection module 100, as a sensing unit, has the core function of real-time and accurate acquisition and feedback of the current temperature of the fuel cell stack. The second thermal management module 300 includes a heat exchange unit, which integrates the dual functions of energy exchange and system coupling. From the perspective of the internal connection of a single component, the heat exchange unit is connected to the exhaust manifold of the engine through a high-temperature resistant pipeline. From the perspective of the coupling of multiple components, the first thermal management module 200 and the second thermal management module 300 do not operate independently; they form a parallel heat exchange structure through the heat exchange unit. Here, parallel means that the coolant circulation loops of the two cooling systems form a parallel topology where they do not interfere with each other but can exchange heat, with the heat exchange unit serving as a common heat exchange node. The current temperature is compared with a first preset temperature. When it is determined that the current temperature is lower than the first preset temperature, the engine is started, and a heat transfer path is constructed through the heat exchange unit: the high-temperature exhaust gas after the engine starts enters the exhaust manifold, and the waste heat is transferred to the first thermal management module 200 through the heat exchange unit, thereby achieving auxiliary heating of the fuel cell stack.

[0027] Alternatively, in some embodiments, such as Figure 2 As shown, the first thermal management module 200 includes: a first water pump 201, a three-way regulating valve 202, and a thermal management unit 203. One end of the first water pump 201 is connected to one end of the cooling fluid of the fuel cell stack; the first end of the three-way regulating valve 202 is connected to the other end of the cooling fluid of the fuel cell stack; the second end of the three-way regulating valve 202 is connected to one end of the thermal management unit 203; and the other end of the thermal management unit 203 is connected to the other end of the first water pump 201.

[0028] Specifically, in the first thermal management module 200, the first water pump 201 provides a power source for the circulation of the fuel cell stack coolant. One end of the pump is directly connected to one end of the fuel cell stack coolant via a pipeline, used to transport the low-temperature coolant into the fuel cell stack to absorb the reaction heat generated during fuel cell stack operation. The three-way regulating valve 202 serves as a control node for the flow direction of the fuel cell stack coolant. The first end of the three-way regulating valve 202 is connected to the other end of the fuel cell stack coolant via a pipeline, used to receive the high-temperature coolant after absorbing the heat from the fuel cell stack. The thermal management unit 203 is responsible for heat dissipation. One end of the thermal management unit 203 is connected to the second end of the three-way regulating valve 202, and the other end of the thermal management unit 203 is connected to the other end of the first water pump 201 via a pipeline to form a closed loop. It should be noted that the connection method between the first water pump 201, the three-way regulating valve 202, and the thermal management unit 203 described above is only exemplary and is not intended to limit this application. Those skilled in the art can configure it according to actual conditions, such as placing the first water pump 201 between the three-way regulating valve 202 and the thermal management unit 203. Furthermore, such as Figure 2 As shown, in some embodiments, a catalytic combustor is integrated within the exhaust manifold 302.

[0029] In other words, a catalytic combustor can be integrated into the exhaust manifold 302. This catalytic combustor is configured to operate under conditions where the fuel cell stack is auxiliary-heated by the engine. It contains a catalytic reaction element capable of catalytically oxidizing unburned components HC (hydrocarbons) and / or toxic components CO (carbon monoxide) in the engine exhaust gas. HC and / or CO combine with oxygen in the exhaust gas to generate harmless CO2 (carbon dioxide) and H2O (water), simultaneously releasing heat of chemical reaction. This released heat of chemical reaction, combined with the original waste heat from the engine exhaust, forms the heat transferred to the heat exchange unit 301 (e.g., ...). Figure 2 The total heat of the exhaust gas (as shown) is transferred to the first thermal management module 200, thereby recovering the heat of the engine exhaust gas, improving the utilization rate of waste heat, and extending the system's range.

[0030] Therefore, the temperature detection module detects the current temperature of the fuel cell stack. When the current temperature is lower than the first preset temperature, the second thermal management module transfers the heat from the exhaust gas in the exhaust manifold to the first thermal management module through the heat exchange unit to assist in heating the fuel cell stack. Thus, by connecting the first and second thermal management modules in parallel through the heat exchange unit and utilizing the heat from the exhaust gas in the exhaust manifold to heat the fuel cell stack, the problems of high energy consumption, long start-up time, and reduced fuel cell lifespan in related technologies are solved, significantly shortening the fuel cell stack start-up time and reducing the battery load.

[0031] Furthermore, in order to clarify the working mode of the engine circuit, the structure and connection method of the second thermal management module 300 are described in detail below.

[0032] Alternatively, in some embodiments, such as Figure 2 As shown, the second thermal management module 300 further includes: a second water pump 303, wherein one end of the second water pump 303 is connected to the second end of the heat exchange unit 301, and the other end of the second water pump 303 is connected to one end of the cooling fluid of the fuel engine; the third end of the heat exchange unit 301 is connected to the third end of the three-way regulating valve 202.

[0033] Alternatively, in some embodiments, such as Figure 2 As shown, the heat exchange unit 301 is provided with an exhaust gas passage and a cooling fluid passage. One end of the exhaust gas passage is connected to the exhaust manifold 302 of the fuel engine, and the other end of the exhaust gas passage is connected to the third end of the three-way regulating valve 202. One end of the cooling fluid passage is connected to the other end of the cooling fluid of the fuel engine, and the other end of the cooling fluid passage is connected to one end of the second water pump 303.

[0034] Specifically, in the second thermal management module 300, the second water pump 303 provides power for the engine coolant circulation, and its other end is connected to the engine coolant end through a sealed pipeline. The heat exchange unit 301 is the core heat exchange component, with an independent exhaust gas passage and a cooling fluid passage inside: one end of the exhaust gas passage is connected to the engine exhaust manifold 302 through a high-temperature resistant pipeline to introduce the high-temperature exhaust gas discharged from the engine, and the other end is connected to the third end of the three-way regulating valve 202 in the first thermal management module 200 through a pipeline to provide a waste heat source for the fuel cell stack cooling circuit; one end of the cooling fluid passage is connected to the other end of the engine coolant through a pipeline to receive the high-temperature coolant after absorbing engine heat, and the other end is connected to one end of the second water pump 303 through a pipeline to form a closed loop connection. It should be noted that the connection method between the heat exchange unit 301, the engine exhaust manifold 302, and the second water pump 303 is merely exemplary and is not intended to limit this application. Those skilled in the art can make the configuration according to the actual situation, such as the second water pump 303 being located between the heat exchange unit 301 and the engine exhaust manifold 302.

[0035] This enables the directional transfer of exhaust heat from the engine to the fuel cell stack to optimize auxiliary heating efficiency, while independent coolant circuits and coordinated control ensure the temperature stability of both the fuel cell stack and the engine.

[0036] Furthermore, to further enhance the heating reliability of the fuel cell stack during low-temperature startup and adapt to a wider range of low-temperature operating conditions, different heating strategies were matched.

[0037] Optionally, in some embodiments, the above-mentioned low-temperature auxiliary heating system 10 further includes: a heating component corresponding to the fuel cell stack, the heating component being configured to provide auxiliary heating for the fuel cell stack when the current temperature is greater than or equal to a first preset temperature and the current temperature is less than a second preset temperature.

[0038] The second preset temperature can be a temperature set by the user, a temperature obtained through a limited number of experiments, or a temperature obtained through a limited number of computer simulations.

[0039] Specifically, the temperature detection module 100 acquires the current temperature of the fuel cell stack in real time and compares the current temperature with the first preset temperature and the second preset temperature. When it is determined that the current temperature of the fuel cell stack is greater than or equal to the first preset temperature and simultaneously less than the second preset temperature, the heating component is activated and enters the working state. The heating component transfers heat to the fuel cell stack to assist in heating, forming a hybrid heating.

[0040] For example, the heating element can be a PTC.

[0041] Therefore, different heating strategies were matched to reduce energy consumption. Furthermore, to ensure the safe operation of the thermal management system, a fault detection and alert mechanism was added.

[0042] Optionally, in some embodiments, the aforementioned low-temperature auxiliary heating system 10 further includes: a first detection component and a communication component, wherein the first detection component is connected to the fuel engine and is configured to detect whether the fuel engine is in a fault state; the communication component is connected to the first detection component and is configured to send a fault reminder message to a preset mobile terminal when the fuel engine is in a fault state.

[0043] Specifically, when the first detection component detects a failure in the fuel engine (such as a malfunction), the control automatically switches to the full power mode (kW) of the heating component, the start-up time is extended to a fraction of a second to trigger an insulation alarm and limit the output of the fuel cell stack, and at the same time the communication component sends a fault reminder message to a preset mobile terminal.

[0044] Optionally, in some embodiments, the aforementioned low-temperature auxiliary heating system 10 further includes: a second detection component and an alert component, wherein the second detection component is connected to the first thermal management module 200 and the second thermal management module 300 respectively, and is used to detect whether there is a cooling fluid leak in the first thermal management module 200 and the second thermal management module 300; and an alert component, which is connected to the second detection component and is configured to provide an acoustic and / or optical alert when there is a cooling fluid leak in the first thermal management module 200 or the second thermal management module 300.

[0045] Optionally, in some embodiments, the alerting component includes: an acoustic alerting unit connected to the second detection component, configured to provide an acoustic alert when there is a cooling fluid leak in the first thermal management module 200 or the second thermal management module 300; and / or an optical alerting unit connected to the second detection component, configured to provide an optical alert when there is a cooling fluid leak in the first thermal management module 200 or the second thermal management module 300.

[0046] Acoustic alerts refer to warning methods that convey specific information to users or operators by emitting sound signals that can be perceived by the human ear. Optical alerts refer to warning information that conveys information through light signals.

[0047] Specifically, when the second detection component detects a cooling fluid leak in the first thermal management module 200 or the second thermal management module 300, it shuts down the engine circuit and the alert component issues an acoustic and / or optical alert.

[0048] This allows for quick alerts to relevant personnel to troubleshoot malfunctions, effectively preventing problems caused by engine failures or coolant leaks, and significantly improving the safety and stability of system operation.

[0049] To help those skilled in the art further understand the low-temperature auxiliary heating system of this utility model, the heating strategy corresponding to the low-temperature auxiliary heating system of this application embodiment will be further described below.

[0050] Figure 3 This is a flowchart of a low-temperature auxiliary heating system method according to an embodiment of the present invention, the method comprising the following steps: S301 obtains the current stack temperature through a temperature sensor.

[0051] S302, determine the temperature. If the battery stack temperature T1 is less than -20°C, proceed to step S303; if the battery stack temperature is greater than or equal to -20°C and less than 0°C, proceed to step S304; if the battery stack temperature is greater than or equal to 0°C, proceed to step S305.

[0052] S303, motor heating coolant.

[0053] S304, PTC auxiliary heating, hybrid heating mode.

[0054] S305, engine and PTC off, fuel cell stack self-heating mode.

[0055] This reduces battery startup time and improves startup success rate under extreme conditions; it also reduces energy consumption by matching different heating strategies; and it integrates engine waste heat recovery with electric heating of heating components, solving the problem of low-temperature failure of a single heat source by dynamically adjusting the heating mode.

[0056] According to the low-temperature auxiliary heating system proposed in this embodiment, when the current temperature is lower than a first preset temperature, the control component starts the engine and transfers the heat from the exhaust gas in the exhaust manifold to the fuel cell stack cooling component through the heat exchange unit for auxiliary heating of the fuel cell stack. Thus, by connecting the first and second thermal management modules in parallel through the heat exchange unit and utilizing the heat from the exhaust gas in the exhaust manifold to heat the fuel cell stack, the system solves the problems of high energy consumption, long start-up time, and reduced fuel cell lifespan in related technologies, significantly shortening the fuel cell stack start-up time and reducing the battery load.

[0057] Secondly, this utility model embodiment proposes a vehicle, the vehicle including Figure 1 The low-temperature auxiliary heating system shown in the embodiment.

[0058] The vehicle proposed according to the embodiments of this utility model solves the problems of high energy consumption, long start-up time, and reduced fuel cell life in related technologies through the above-mentioned low-temperature auxiliary heating system, greatly shortens the start-up time of the fuel cell stack, and reduces the battery load.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A low-temperature auxiliary heating system (10), characterized in that, include: Temperature detection module (100), first thermal management module (200), and second thermal management module (300), wherein, The temperature detection module (100) is connected to the fuel cell stack in the first thermal management module (200), and the temperature detection module (100) is configured to detect the current temperature of the fuel cell stack; The second thermal management module (300) includes a fuel engine and a heat exchange unit (301). The first end of the heat exchange unit (301) is connected to the exhaust manifold (302) of the fuel engine. The second thermal management module (300) and the first thermal management module (200) are connected in parallel through the heat exchange unit (301). The second thermal management module (300) is configured to transfer the heat of the exhaust gas in the exhaust manifold (302) to the first thermal management module (200) through the heat exchange unit (301) when the current temperature is less than a first preset temperature, so as to assist in heating the fuel cell stack.

2. The low-temperature auxiliary heating system (10) according to claim 1, characterized in that, The first thermal management module (200) includes a first water pump (201), a three-way regulating valve (202), and a thermal management unit (203), wherein, One end of the first water pump (201) is connected to one end of the cooling fluid of the fuel cell stack; The first end of the three-way regulating valve (202) is connected to the other end of the cooling fluid of the fuel cell stack, and the second end of the three-way regulating valve (202) is connected to one end of the thermal management unit (203); The other end of the thermal management unit (203) is connected to the other end of the first water pump (201).

3. The low-temperature auxiliary heating system (10) according to claim 2, characterized in that, The second thermal management module (300) further includes: a second water pump (303), wherein, One end of the second water pump (303) is connected to the second end of the heat exchange unit (301), and the other end of the second water pump (303) is connected to one end of the cooling fluid of the fuel engine; The third end of the heat exchange unit (301) is connected to the third end of the three-way regulating valve (202).

4. The low-temperature auxiliary heating system (10) according to claim 1 or 3, characterized in that, The heat exchange unit (301) is internally provided with an exhaust gas passage and a cooling fluid passage, wherein, One end of the exhaust gas passage is connected to the exhaust manifold (302) of the fuel engine, and the other end of the exhaust gas passage is connected to the third end of the three-way regulating valve (202). One end of the cooling fluid passage is connected to the other end of the cooling fluid of the fuel engine, and the other end of the cooling fluid passage is connected to one end of the second water pump (303).

5. The low-temperature auxiliary heating system (10) according to claim 1, characterized in that, The exhaust manifold (302) integrates a catalytic combustor.

6. The low-temperature auxiliary heating system (10) according to claim 1, characterized in that, Also includes: A heating component corresponding to the fuel cell stack is configured to provide auxiliary heating for the fuel cell stack when the current temperature is greater than or equal to the first preset temperature and the current temperature is less than the second preset temperature.

7. The low-temperature auxiliary heating system (10) according to claim 1, characterized in that, Also includes: A first detection component is connected to the fuel engine and is configured to detect whether the fuel engine is in a faulty state. A communication component, which is connected to the first detection component, is configured to send a fault alert message to a preset mobile terminal when the fuel engine is in the fault state.

8. The low-temperature auxiliary heating system (10) according to claim 1, characterized in that, Also includes: The second detection component is connected to the first thermal management module (200) and the second thermal management module (300) respectively, and is used to detect whether there is cooling fluid leakage in the first thermal management module (200) and the second thermal management module (300); A reminder component, connected to the second detection component, is configured to provide an acoustic and / or optical reminder when there is a cooling fluid leak in the first thermal management module (200) or the second thermal management module (300).

9. The low-temperature auxiliary heating system (10) according to claim 8, characterized in that, The reminder component includes: An acoustic alert unit is connected to the second detection component and is configured to provide an acoustic alert when there is a cooling fluid leak in the first thermal management module (200) or the second thermal management module (300). And / or, an optical alert unit connected to the second detection component, the optical alert unit being configured to provide an optical alert when there is a cooling fluid leak in the first thermal management module (200) or the second thermal management module (300).

10. A vehicle, characterized in that, include: The low-temperature auxiliary heating system (10) as described in any one of claims 1-9.

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