A fuel cell thermal cycle management system, passenger vehicle

Abstract

The utility model provides a kind of fuel cell thermal cycle management system, passenger car, it is related to hydrogen fuel cell management technical field. Including: control system, fuel cell main waterway, hydrogen storage system internal circulation waterway;The fuel cell main waterway includes first circulation waterway system, fuel cell engine, first heating device, first circulation branch, heat exchange device, flow path control valve are provided on the first circulation branch;The flow path control can control the opening of the first circulation branch when the temperature in the first circulation waterway system reaches preset value to make fluid enter the heat exchange device and the hydrogen storage system internal circulation waterway heat exchange;The hydrogen storage system internal circulation waterway includes connection to the heat exchange device and flow path control component;The flow path control component can be communicated with external circulation waterway, and with the solid-state hydrogen storage device form hydrogen storage system circulation waterway system to be used to cool when the solid-state hydrogen storage device is replenished fuel.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen fuel cell management systems, and more specifically, to a fuel cell thermal cycle management system and a bus. Background Technology

[0002] With the continuous development of hydrogen fuel cell bus technology, vehicles equipped with solid-state hydrogen storage devices are gradually becoming the mainstream trend in the industry. Solid-state hydrogen storage devices utilize hydrogen-absorbing phase change materials, and their operating state exhibits a strong linear correlation with temperature: when the temperature is maintained at 45°C or above, the device enters the hydrogen release phase; when the temperature drops to 20°C or below, the device enters the hydrogen absorption phase. However, in actual vehicle operation, thermal management faces multiple challenges. Existing technologies typically rely on waste heat generated by the fuel cell engine's cooling system, which is transferred to the water heating system via plate heat exchangers to meet the heating needs of vehicles in cold regions. However, in warm climates where heating is not required, this waste heat cannot be effectively utilized, leading to energy idleness and system redundancy. During hydrogen use, using PTC heating films or pure electric heaters to heat the solid-state hydrogen storage device significantly increases the vehicle's electrical load and reduces energy efficiency. During hydrogen refueling, due to strict safety regulations prohibiting the use of high-voltage electrical equipment in specific vehicle spaces, conventional water-cooled unit cooling solutions cannot be implemented, making it difficult for the device to quickly reach a suitable low-temperature state. Furthermore, the operating temperature requirements of fuel cell systems and hydrogen storage systems differ fundamentally. Existing thermal management systems lack cross-system coordination capabilities, making it difficult to achieve precise temperature control within the compact vehicle layout. This results in insufficient thermal management efficiency and increased safety hazards. These problems are particularly pronounced in confined spaces, hindering the overall performance and reliability of hydrogen fuel cell buses. Utility Model Content

[0003] The purpose of this application is to provide a fuel cell thermal cycle management system to solve the above-mentioned technical problems.

[0004] The present invention adopts the following solution: A fuel cell thermal cycle management system includes: a control system, a fuel cell main water circuit, and a hydrogen storage system internal circulation water circuit; wherein, the fuel cell main water circuit includes a first circulation water circuit system and a fuel cell engine and a first heating device connected to the first circulation water circuit system, the first circulation water circuit system is provided with a first circulation branch, a heat exchange device and a flow control valve connected to the control system are provided on the first circulation branch; the flow control valve is configured to control the opening of the first circulation branch when the temperature in the first circulation water circuit system reaches a preset value, so that fluid enters the heat exchange device and exchanges heat with the hydrogen storage system internal circulation water circuit; the hydrogen storage system internal circulation water circuit includes a second circulation water circuit system, and a solid hydrogen storage device, a second heating device and a flow control component connected to the second circulation water circuit system, and the second circulation water circuit system is connected to the heat exchange device.

[0005] Furthermore, the flow path control component is provided with an external connection port for communication with the external circulating water path, and forms a hydrogen storage system circulating water path system with the solid hydrogen storage device for cooling the solid hydrogen storage device during hydrogen replenishment.

[0006] Furthermore, a second circulation branch is connected to the first circulation water system. The second circulation branch is connected to the flow path control valve to control the on / off state through the flow path control valve, and a heat dissipation device is provided on the second circulation branch.

[0007] Furthermore, the first circulating water system is equipped with a fuel cell water pump, and the first circulating water system is connected to an expansion tank and a deionization device.

[0008] Furthermore, the first heating device includes a heating module and a thermostat, the thermostat being connected to the control system for regulating the temperature within the first circulating water system.

[0009] Furthermore, the second circulating water system is equipped with an internal circulating water pump, and the second circulating water system is connected to an expansion tank.

[0010] Furthermore, the flow path control valve is a first electromagnetic three-way solenoid valve, and the flow path control assembly includes a second electromagnetic three-way solenoid valve and a third electromagnetic three-way solenoid valve respectively disposed on both sides of the solid hydrogen storage device.

[0011] Furthermore, the external circulation water path includes a third circulation water path, and an external circulation water pump and a cold water source connected to the third circulation water path. The two ends of the third circulation water path are adapted to be connected to the flow path control component via quick-connect plugs.

[0012] Furthermore, the control system includes a fuel cell system controller, a hydrogen controller, and a thermal management system. The hydrogen controller controls and connects to the second and third electromagnetic three-way valves. The fuel cell system controller controls and connects to the first electromagnetic three-way valve and a heat dissipation device. The thermal management system controls and connects to the first and second heating devices to control the temperature of the first and second circulating water systems. Through the control and adjustment of the fuel cell engine controller, hydrogen controller, and thermal management system, the solid-state hydrogen storage device is kept in different operating temperature environments.

[0013] This utility model also provides a bus, including the aforementioned fuel cell thermal cycle management system.

[0014] Beneficial effects: This application provides a fuel cell internal and external waste heat circulation management system, a bus, and a control management method. The waste heat circulation management system realizes the heat exchange regulation between the main water circuit of the fuel cell and the internal circulation water circuit of the hydrogen storage system, effectively solving the temperature adaptation problem of solid hydrogen storage devices in the confined space of the vehicle. It solves the problem of different operating temperatures required by solid hydrogen storage devices in the confined space of the vehicle, reduces material costs, and improves the thermal management efficiency and safety performance of the whole vehicle. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of a fuel cell thermal cycle management system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the fuel cell main water circuit heating operation process during the start-up phase of a fuel cell thermal cycle management system according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the heating operation process of the circulating water circuit in the hydrogen storage system during the start-up phase of a fuel cell thermal cycle management system according to an embodiment of this utility model. Figure 4 This is a schematic diagram of the operation process of a fuel cell thermal cycle management system in the thermal equilibrium stage according to an embodiment of this utility model; Figure 5 This is a schematic diagram of the operation flow of the fuel cell main water circuit during the shutdown phase of a fuel cell thermal cycle management system according to an embodiment of this utility model. Figure 6 This is a schematic diagram of the operation flow of the circulating water circuit in the hydrogen storage system during the shutdown phase of a fuel cell thermal cycle management system according to an embodiment of this utility model. Figure 7 This is a schematic diagram of the operation flow of the hydrogen storage system and circulating water circuit system of a fuel cell thermal cycle management system during the hydrogen refueling stage, according to an embodiment of this utility model. Figure label: Fuel cell main water circuit 1, first circulating water circuit system 11, fuel cell engine 12, first heating device 13, flow control valve 14, first circulating branch 15, second circulating branch 16, heat dissipation device 17, heat exchange device 18, thermostat 19, fuel cell water pump 110. The hydrogen storage system includes an internal circulating water circuit 2, a second circulating water circuit system 21, a solid hydrogen storage device 22, a second heating device 23, a flow path control component 24, and an internal circulating water pump 25. Hydrogen storage system circulating water system 3, quick connector 31, third circulating water system 32, external circulating water pump 33, cold water source 34; 4. Expansion tank; 5. Deionization device. Detailed Implementation

[0016] Example 1 Combination Figures 1 to 7 As shown, this embodiment provides a bus, including a fuel cell thermal cycle management system. The fuel cell thermal cycle management system includes: a control system, a fuel cell main water circuit 1, and a hydrogen storage system internal circulation water circuit 2. The fuel cell main water circuit 1 includes a first circulation water circuit system 11 and a fuel cell engine 12 and a first heating device 13 connected to the first circulation water circuit system 11. The first circulation water circuit system 11 is provided with a first circulation branch 15, and a heat exchange device 18 and a flow control valve 14 connected to the control system are provided on the first circulation branch 15. The flow control valve 14 is configured to... When the temperature inside reaches a preset value, the opening of the first circulation branch 15 is controlled to allow fluid to enter the heat exchange device 18 and exchange heat with the circulating water path 2 inside the hydrogen storage system. The circulating water path 2 inside the hydrogen storage system includes a second circulating water path system 21, and a solid hydrogen storage device 22, a second heating device 23, and a flow path control component 24 connected to the second circulating water path system 21. The second circulating water path system 21 is connected to the heat exchange device 18. The flow path control component 24 is provided with an external connection port for communication with the external circulating water path and forms a hydrogen storage system circulating water path system 3 with the solid hydrogen storage device 22 for replenishing fuel to the solid hydrogen storage device 22.

[0017] Combination Figure 1As shown, in this embodiment, the heat exchange device 18 can realize heat transfer between two fluids, and it can adopt a plate heat exchanger, shell and tube heat exchanger, or other forms of heat exchange structure. The first heating device 13 and the second heating device 23 can adopt electric heating elements, hot water heaters, or other forms of heat source equipment, such as providing heat through resistance wire heating or infrared radiation heating. For example, the first heating device 13 can be a PTC, and the second heating device 23 can be a water heater. The system integrates the fuel cell main water circuit 1 and the hydrogen storage system internal circulation water circuit 2, and uses a dynamic heat exchange mechanism to realize the temperature demand regulation of the solid hydrogen storage device 22 under different operating conditions. Among them, the first circulation water circuit system 11 in the fuel cell main water circuit 1 connects the fuel cell engine 12 and the first heating device 13, and is provided with a first circulation branch 15, on which the heat exchange device 18 and the flow control valve 14 are configured. When the fluid temperature in the first circulation water circuit system 11 reaches a preset value, the flow control valve 14 is triggered to open, allowing the high-temperature fluid to enter the heat exchange device 18. Therefore, the heat exchange device 18 acts as a heat exchange hub, transferring the waste heat in the main water channel 1 of the fuel cell to the circulating water channel 2 in the hydrogen storage system, thereby providing a heat source for the solid hydrogen storage device 22.

[0018] By operating based on actual temperature feedback rather than fixed time or preset conditions, the heat exchange is ensured to start only when the fuel cell generates sufficient waste heat, avoiding ineffective energy transfer or system overheating risks, thus efficiently utilizing waste heat to provide a heat source for the hydrogen storage system. Furthermore, by providing an external connection port through the flow path control component 24, an external cold water source can be directly introduced during the hydrogen refueling stage to form an independent circulation, eliminating the need for onboard high-pressure cooling equipment and avoiding the safety hazards of using high-pressure components within the confined space of the vehicle. Therefore, this system can simultaneously meet the conflicting requirements of high-temperature release and low-temperature absorption within a limited space, improving overall thermal management efficiency.

[0019] The hydrogen storage system internal circulation water path 2 described in this embodiment includes a second circulation water path system 21, which connects the solid hydrogen storage device 22, the second heating device 23, and the flow path control component 24. The second circulation water path system 21 forms a heat exchange relationship with the first circulation water path system 11 through a heat exchange device 18 to meet the requirement of maintaining a high temperature above 45°C for the solid hydrogen storage device 22 during the hydrogen consumption stage. Specifically, during the hydrogen consumption stage, after the first heating device 13 assists in raising the temperature to the set value, the flow path control valve 14 guides the residual heat to replace part of the heating demand, thereby reducing the high-power operation of the second heating device 23 and significantly reducing the overall vehicle power consumption. In addition, the flow path control component 24 is provided with an external connection port for switching to the external circulation water path connection state during the hydrogen refueling stage. For example, when it is necessary to refuel the solid hydrogen storage device 22, an external cold water source can be connected to the flow path control component 24 through a quick-connect plug 31 to form an independent hydrogen storage system circulation water path system 3. The control system adjusts the opening and closing state of the flow path control valve 14 in real time according to the temperature changes of the first circulating water system 11, ensuring that heat exchange only starts when the fuel cell generates sufficient waste heat. This operation method based on actual temperature feedback avoids the risk of ineffective energy transfer or system overheating, while realizing closed-loop recovery of waste heat. Thus, the system not only solves the problem of different operating temperatures required by the solid hydrogen storage device 22 within the limited space of the vehicle, but also avoids the additional power consumption caused by independent heating or cooling systems and the safety hazards caused by the use of high-pressure components in traditional solutions, ultimately improving the thermal management efficiency and safety performance of the entire vehicle.

[0020] The first circulating water system 11 is also connected to a second circulating branch 16, which is connected to a flow control valve 14 to control the on / off state. A heat dissipation device 17 is also provided on the second circulating branch 16.

[0021] The second circulation branch 16 is an independent water circuit branch added to the first circulation water system 11. The heat dissipation device 17 is used to transfer heat from the fluid to the external environment. It can take the form of an air-cooled radiator, a liquid-cooled heat exchanger, or a natural convection radiator, aiming to quickly reduce the fluid temperature and thus prevent system overheating. By integrating the second circulation branch 16 and the heat dissipation device 17, a dynamic heat dissipation path is constructed to meet the thermal management needs when the fuel cell engine 12 is shut down or the system temperature is too high. The first circulation water system 11 and the second circulation branch 16 are connected through a flow path control valve 14. When the control system detects that the temperature exceeds the safety threshold or receives a shutdown command, the flow path control valve 14 automatically opens the second circulation branch 16 and blocks the heat exchange branch, ensuring that excess heat can be dissipated in a timely manner. At the same time, the heat dissipation device 17 rapidly cools the fluid using air or ambient medium. Its cooperation with the flow path control valve 14 achieves efficient start-up and termination of the heat dissipation process. This design not only expands the functional boundaries of the water system but also significantly improves the safety and robustness of the vehicle's thermal management without the need for additional high-pressure equipment. It solves the problem of the fuel cell system lacking an independent cooling mechanism in high-temperature or shutdown states, effectively preventing performance fluctuations and safety hazards caused by heat accumulation, while simultaneously enhancing the overall efficiency and reliability of the vehicle's thermal management.

[0022] In this embodiment, a fuel cell water pump 110 is installed in the first circulating water system 11, and the first circulating water system 11 is connected to the expansion tank 4 and the deionization device 5. The fuel cell water pump 110 provides active circulation driving force for the coolant, and can be implemented using a centrifugal pump, gear pump, or plunger pump, ensuring that the coolant can overcome pipeline resistance and achieve efficient directional flow under low-temperature start-up or high-load conditions. The deionization device 5 continuously removes ionic impurities from the coolant, and can be implemented using ion exchange resin columns, electro-deionization devices, or reverse osmosis membrane modules, aiming to inhibit electrochemical corrosion and scaling. The expansion tank 4, connected to the first circulating water system 11, continuously absorbs the volume fluctuations of the coolant caused by temperature changes during system operation, while compensating for possible coolant losses, thereby maintaining the stability of system pressure. The deionization device 5, through continuous purification of the coolant, prevents corrosion risks caused by impurity accumulation. These components work together to not only improve the operational reliability of the first circulating water system 11, but also significantly improve the stability of the vehicle's thermal management.

[0023] In this embodiment, the first heating device 13 includes a heating module and a thermostat 19. The thermostat 19 is used to adjust the water flow direction in the first circulating water system 11 in real time according to the actual temperature. Here, the thermostat 19 is connected to the flow control valve 14 through a connecting branch, and is connected to the first circulation branch 15 and the second circulation branch 16 through the flow control valve 14. This allows the thermostat 19 to introduce fluid into the flow control valve 14 according to the temperature. The flow control valve 14 then controls the opening and closing of the first circulation branch 15 and the second circulation branch 16 according to the working status of the bus. The heating module is a device that provides basic heat source input. It can be implemented using an electric heating tube, a PTC heating element, or a gas heater to quickly raise the water temperature in low-temperature environments. The thermostat 19 is a temperature-sensitive element. It can be a wax thermostat 19, a bimetallic thermostat 19, or an electronic thermostat 19. It can automatically adjust the water flow direction according to real-time water temperature changes, thereby maintaining a small circulation path to accelerate the heating process in the low-temperature stage and switching to a large circulation path to disperse heat in the high-temperature stage. The connection between the control system and the thermostat 19 enables the system to dynamically intervene in the operation of the thermostat 19 based on a preset temperature threshold, avoiding the response delay of the mechanical thermostat 19. The introduction of the control system further enhances the response speed and accuracy of the thermostat 19, achieving precise closed-loop control of the temperature of the first circulating water system 11. This design not only optimizes the heating efficiency during startup but also prevents overheating during operation, significantly improving the stability and energy utilization efficiency of the thermal management system. Furthermore, through the above technical solutions, the solid-state hydrogen storage device 22 can obtain reliable temperature environment support at different operating stages, thereby solving the problems of low heating efficiency and increased overheating risk caused by temperature regulation lag, while reducing additional power consumption and improving the operating temperature stability of the solid-state hydrogen storage device 22.

[0024] In this embodiment, an internal circulating water pump 25 is installed in the second circulating water system 21, and the second circulating water system 21 is connected to the expansion tank 4. The flow path control valve 14 is a first electromagnetic three-way solenoid valve, and the flow path control component 24 includes a second electromagnetic three-way solenoid valve and a third electromagnetic three-way solenoid valve respectively disposed on both sides of the solid hydrogen storage device 22. The first electromagnetic three-way solenoid valve uses electromagnetic drive valve core displacement to achieve rapid switching of the flow path on / off state, which can improve the response speed and accuracy of water path switching. The second electromagnetic three-way solenoid valve and the third electromagnetic three-way solenoid valve are symmetrically arranged on both sides of the solid hydrogen storage device 22. They can achieve dual-valve coordinated control by synchronously receiving electrical signals to ensure the immediate intervention of the external circulating water path during the hydrogenation stage and the sealing performance in the internal circulation mode.

[0025] The external circulating water path includes a third circulating water path 32, and an external circulating water pump 33 and a cold water source 34 connected to the third circulating water path 32. Both ends of the third circulating water path 32 are adapted to be connected to the flow path control component 24 via quick-connect plugs 31. The third circulating water path 32 is a dedicated cooling path independent of the fuel cell main system, ensuring the independence of external cooling operations during hydrogen refueling and avoiding interference with other vehicle functions. The external circulating water pump 33 is a power device that drives water circulation. It can be driven by a DC motor or an AC motor, providing stable water flow power while avoiding the safety risks associated with the prohibition of high-pressure components in hydrogen refueling areas. In practical applications, the cold water source 34 refers to a device or container that can provide a low-temperature cooling medium. It can be an ice-water mixture or low-temperature water output from a refrigeration unit, directly acting on the solid-state hydrogen storage device 22 to achieve rapid cooling and meet the low-temperature environment requirements during hydrogen refueling. The quick-connect plug 31 is an interface device that facilitates quick connection and disconnection. It can be implemented using a snap-fit ​​connector or a threaded locking connector. Its purpose is to simplify manual operation procedures, shorten water circuit switching time, and eliminate the risk of high-pressure leakage.

[0026] This solution effectively addresses the safety hazards of external connections during hydrogen refueling by constructing an independent external circulation water circuit structure. The third circulation water circuit 32, as a dedicated path, is completely isolated from the fuel cell main system, ensuring the independence of cooling operations during hydrogen refueling. The external circulation water pump 33 is directly driven by an external power source and can still operate normally when the vehicle is powered off, thus avoiding the safety risks that may arise from using the onboard high-pressure system. The low-temperature cooling medium provided by the cold water source 34 directly acts on the solid-state hydrogen storage device 22, achieving rapid cooling. The quick-connect plug 31 allows for rapid manual establishment or disconnection of external water circuit connections without the need for tools or complex assembly, significantly improving operational efficiency. Furthermore, when used in conjunction with the aforementioned flow path control component 24, this solution enables flexible switching of water circuit modes, ensuring both reliable temperature control during hydrogen refueling and the system's sealing and safety during daily operation.

[0027] In this embodiment, the control system includes a fuel cell system controller, a hydrogen controller, and a thermal management system. The hydrogen controller controls and connects to a second and a third electromagnetic three-way valve. The fuel cell system controller controls and connects to a first electromagnetic three-way valve and a heat dissipation device 17. The thermal management system controls and connects to a first heating device 13 and a second heating device 23 to control the temperature of the first circulating water system 11 and the second circulating water system 21. Through the control and adjustment of the fuel cell engine 12 controller, the hydrogen controller, and the thermal management system, the solid hydrogen storage device 22 is kept in different operating temperature environments.

[0028] The fuel cell system controller is the core unit for monitoring and adjusting the operating status of the fuel cell main water circuit 1. It can dynamically adjust the opening of the first electromagnetic three-way valve by collecting real-time temperature data from the fuel cell engine 12, thereby optimizing waste heat distribution. In practical applications, the fuel cell system controller can also combine information from the thermostat 19 to determine whether to activate the cooling device 17 for cooling, ensuring the system operates within its high-efficiency operating range. The hydrogen controller is a control module specifically designed for hydrogen storage systems. Its main function is to respond to hydrogen refueling commands and safely switch to the external circulation water circuit, avoiding the use of high-pressure cooling equipment during hydrogen refueling and thus eliminating safety hazards. Furthermore, the hydrogen controller can maintain the stability of the internal circulation water circuit, ensuring that the temperature requirements of the solid-state hydrogen storage device 22 are met during normal operation. The thermal management system is an intelligent unit that adjusts heating power based on real-time temperature data from both circulation water circuits. Its purpose is to reduce the need for additional electric heating, fully utilize fuel cell waste heat, and improve overall vehicle energy efficiency. This control system achieves precise coordination between water circuit switching and temperature regulation through a clearly defined architecture. For example, during vehicle startup, the fuel cell system controller can quickly raise the temperature of the first circulating water system 11 to the operating threshold, while the hydrogen controller ensures that the hydrogen storage system water circuit remains in internal circulation mode, preventing a decrease in hydrogen absorption or release efficiency due to insufficient temperature. When the system enters the thermal equilibrium stage, the fuel cell system controller adjusts the opening of the first electromagnetic three-way valve based on temperature feedback, directing some of the waste heat to the heat exchange device 18 to heat the hydrogen storage system, thereby reducing the output power of the second heating device 23. This process not only improves waste heat utilization efficiency but also effectively reduces the increased power consumption caused by pure electric heating. During shutdown, the fuel cell system controller closes the branch flowing to the heat exchange device 18 and activates the cooling device 17 to cool the first circulating water system 11, while the hydrogen controller maintains the stable state of the internal circulating water circuit, ensuring the safety of the solid hydrogen storage device 22. For hydrogen refueling operations, the hydrogen controller controls the second and third electromagnetic three-way valves to achieve safe switching of the water circuit, avoiding the use of high-pressure cooling equipment and significantly improving operational safety. The above technical solution not only solves the safety hazards of external connections during the hydrogen refueling stage, but also realizes a safe and convenient water circuit switching mechanism, ensuring the reliability of temperature control of the solid hydrogen storage device 22 during the hydrogen replenishment process.

[0029] Example 2 This application also discloses a control and management method that utilizes a fuel cell internal and external waste heat circulation management system, including the following steps: S1, Combination Figure 2 and Figure 3As shown, when the fuel cell bus starts, the control system controls the first heating device 13 in the first circulating water system 11 to work and heat under the regulation of the thermostat 19. At this time, the flow control valve 14 disconnects the first circulating branch 15; the flow control component 24 controls the second circulating water system 21 to switch to the internal circulation mode and cuts off the connection with the external circulating water system. S2, Combination Figure 4 As shown, when the fluid temperature in the first circulating water system 11 reaches the preset value, that is, when the thermal equilibrium stage is reached, the flow control valve 14 controls the opening of the first circulating branch 15 and the second circulating branch 16, so that the high temperature fluid enters the heat exchange device 18 to exchange heat with the second circulating water system 21, and controls the second heating device 23 to reduce the output power through the control system. S3, Combination Figure 5 and Figure 6 As shown, when the fuel cell engine 12 is turned off or the bus is powered off, the flow control valve 14 controls the second circulation branch 16 to open, so as to cool down the fluid in the first circulation water system 11 through the heat dissipation device 17, and the second heating device 23 stops heating and keeps the flow control component 24 in its original opening state. S4, Combination Figure 7 As shown, when hydrogen needs to be added to the solid hydrogen storage device 22, the external circulating water circuit is connected to the flow control component via the quick-connect plug 31, and the flow control component 24 is switched to be connected to the external circulating water circuit to form the hydrogen storage system circulating water circuit system 3 for hydrogen replenishment and cooling.

[0030] By combining the main water circuit 1 of the fuel cell with the circulating water circuit 2 of the hydrogen storage system through a dynamic heat exchange mechanism, and introducing a flow path control valve 14 based on actual temperature feedback, the solid hydrogen storage device 22 achieves precise temperature management under different operating conditions, thereby achieving the effects of efficient utilization of waste heat, reduction of vehicle power consumption, and avoidance of safety hazards in the use of high-voltage components. It should be understood that the above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0031] The accompanying drawings used in the above description of the embodiments only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. A fuel cell thermal cycle management system, characterized in that, include: The control system, the main water circuit of the fuel cell, and the internal circulating water circuit of the hydrogen storage system; among them, The fuel cell main water circuit includes a first circulating water circuit system and a fuel cell engine and a first heating device connected to the first circulating water circuit system. The first circulating water circuit system is provided with a first circulating branch. The first circulating branch is provided with a heat exchange device and a flow control valve connected to the control system. The flow control valve is used to control the opening of the first circulating branch so that fluid enters the heat exchange device and exchanges heat with the circulating water circuit in the hydrogen storage system. The hydrogen storage system includes a second circulating water system, and a solid hydrogen storage device, a second heating device, and a flow control component connected within the second circulating water system. The second circulating water system is connected to the heat exchange device.

2. The fuel cell thermal cycle management system according to claim 1, characterized in that, The flow path control component is provided with an external connection port for communication with the external circulating water path, and forms a hydrogen storage system circulating water path system with the solid hydrogen storage device for cooling the solid hydrogen storage device during hydrogen replenishment.

3. The fuel cell thermal cycle management system according to claim 1, characterized in that, The first circulating water system is also connected to a second circulating branch, which is connected to the flow path control valve to control the on / off state. A heat dissipation device is also provided on the second circulating branch.

4. The fuel cell thermal cycle management system according to claim 1, characterized in that, The first circulating water system is equipped with a fuel cell water pump and is connected to an expansion tank and a deionization device.

5. The fuel cell thermal cycle management system according to claim 1, characterized in that, The first heating device includes a heating module and a thermostat, the thermostat being connected to the control system for regulating the temperature within the first circulating water system.

6. The fuel cell thermal cycle management system according to claim 1, characterized in that, The second circulating water system is equipped with an internal circulating water pump and is connected to an expansion tank.

7. The fuel cell thermal cycle management system according to claim 2, characterized in that, The flow path control valve is a first electromagnetic three-way solenoid valve, and the flow path control assembly includes a second electromagnetic three-way solenoid valve and a third electromagnetic three-way solenoid valve respectively disposed on both sides of the solid hydrogen storage device.

8. The fuel cell thermal cycle management system according to claim 2, characterized in that, The external circulation water circuit includes a third circulation water circuit, and an external circulation water pump and a cold water source connected to the third circulation water circuit. The two ends of the third circulation water circuit are adapted to be connected to the flow path control component via quick-connect plugs.

9. The fuel cell thermal cycle management system according to claim 7, characterized in that, The control system includes a fuel cell system controller, a hydrogen controller, and a thermal management system. The hydrogen controller controls and connects to the second and third electromagnetic three-way valves. The fuel cell system controller controls and connects to the first electromagnetic three-way valve and a heat dissipation device. The thermal management system controls and connects to the first and second heating devices to control the temperature of the first and second circulating water systems.

10. A passenger vehicle, characterized in that, Includes the fuel cell thermal cycle management system as described in any one of claims 1-9.

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