Powertrain and vehicle

Abstract

The present invention provides a powertrain and a vehicle. The powertrain includes: a power battery, a drive motor, a hydrogen fuel cell, a solid-state hydrogen storage device, and a hydrogen-consuming catalytic converter. The power battery can supply power to the drive motor; the hydrogen fuel cell is electrically connected to the power battery and the drive motor, and the hydrogen fuel cell can charge the power battery and supply power to the drive motor; the solid-state hydrogen storage device is communicated with the hydrogen inlet of the hydrogen fuel cell, and the solid-state hydrogen storage device has two modes: online hydrogen addition and hydrogen replacement; the hydrogen-consuming catalytic converter is communicated with the tail gas discharge port of the hydrogen fuel cell. The technical solution of the present application effectively solves the problems that in the current market, the internal space of hydrogen fuel cell passenger cars is occupied more by the high-pressure hydrogen storage system, the cost of the power system is relatively high, the potential safety hazard is relatively large, and the vehicle cannot enter the enclosed space of the underground garage.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a powertrain and a vehicle. Background Art

[0002] At present, the power system of hydrogen fuel cell passenger vehicles on the market adopts a full-power drive architecture of hydrogen fuel cells, and the capacity of the power battery is small, resulting in a high cost of the powertrain of hydrogen fuel cell passenger vehicles.

[0003] The hydrogen storage system of hydrogen fuel cell passenger vehicles adopts a 70Mpa carbon fiber-wound high-pressure gaseous hydrogen storage cylinder technology. Since the daily driving of hydrogen fuel cell passenger vehicles requires a large amount of hydrogen storage, and the cylindrical volume of the high-pressure hydrogen storage cylinder is large, it occupies a relatively large amount of the vehicle's internal space, so that the internal space of the hydrogen fuel cell passenger vehicle is occupied more by the high-pressure hydrogen storage system. Since the pressure in the high-pressure hydrogen storage cylinder reaches a relatively high 70Mpa, the high-pressure hydrogen storage cylinder has very high requirements for pressure-bearing capacity, uses a large amount of high-modulus carbon fiber, and the high-pressure hydrogen storage cylinder has relatively high requirements for airtightness, thus making the cost of the hydrogen storage system of hydrogen fuel cell passenger vehicles relatively high. At the same time, the 70Mpa hydrogen storage cylinder has relatively high requirements for the sealing performance of the sealing structure. Once the sealing components fail, high-pressure hydrogen leakage will occur, posing a relatively large safety hazard.

[0004] Moreover, there is unreacted hydrogen in the exhaust gas of the hydrogen fuel cell, and the hydrogen will be discharged outside the vehicle along with the exhaust gas. When the vehicle enters an enclosed space such as a garage, as the hydrogen in the exhaust gas discharged by the hydrogen fuel cell accumulates continuously, the concentration of hydrogen in the enclosed space increases, posing a relatively high risk of fire and explosion, and the safety performance is relatively poor.

[0005] In this way, in the current market, the internal space of hydrogen fuel cell passenger vehicles is occupied more by the high-pressure hydrogen storage system, the cost of the power system is relatively high, the safety hazard is relatively large, and the vehicle cannot enter the enclosed space of the underground garage. Summary of the Invention

[0006] The main object of the present invention is to provide a powertrain and a vehicle to solve the problems that in the current market, the internal space of hydrogen fuel cell passenger vehicles is occupied more by the high-pressure hydrogen storage system, the cost of the power system is relatively high, the safety hazard is relatively large, and the vehicle cannot enter the enclosed space of the underground garage.

[0007] To achieve the above object, according to one aspect of the present invention, a powertrain is provided, including: a power battery; a drive motor, where the power battery can supply power to the drive motor; a hydrogen fuel cell, which is electrically connected to the power battery and the drive motor, and the hydrogen fuel cell can charge the power battery and supply power to the drive motor; a solid-state hydrogen storage device, which is communicated with the hydrogen inlet of the hydrogen fuel cell, and the solid-state hydrogen storage device has two modes: online hydrogen addition and hydrogen replacement; a hydrogen scavenging catalytic converter, which is communicated with the exhaust port of the hydrogen fuel cell.

[0008] Further, the rated power of the hydrogen fuel cell is greater than or equal to 10 kW and less than or equal to 50 kW, and / or, the capacity of the power battery is greater than or equal to 10 kWh and less than or equal to 40 kWh.

[0009] Further, the solid-state hydrogen storage device includes a solid-state hydrogen storage module and a hydrogen storage alloy material disposed within the solid-state hydrogen storage module; the hydrogen supply pressure within the solid-state hydrogen storage module is greater than or equal to 0.5 MPa and less than or equal to 1.6 MPa; the temperature of the heat exchange medium within the solid-state hydrogen storage module is less than or equal to 90 °C.

[0010] Further, the solid-state hydrogen storage device further includes a cryogenic cold start solid-state hydrogen storage bottle, which is communicated with the hydrogen inlet of the hydrogen fuel cell through a bottle port combination valve. The hydrogen capacity of the cryogenic cold start solid-state hydrogen storage bottle is less than or equal to 100 grams, and the cryogenic cold start solid-state hydrogen storage bottle is only used for hydrogen supply during the cryogenic cold start of the hydrogen fuel cell when the ambient temperature is below zero; after the cryogenic cold start of the hydrogen fuel cell, hydrogen is supplied by the solid-state hydrogen storage device; an electric heating film is disposed outside the cryogenic cold start solid-state hydrogen storage bottle, and the electric heating film is powered by the power battery.

[0011] Further, the hydrogen scavenging catalytic converter includes a housing, a carrier disposed within the housing, and a hydrogen scavenging catalyst coated on the carrier; the shape of the carrier is spherical; and / or, the material of the carrier is a porous material.

[0012] Further, the hydrogen scavenging catalytic converter includes a housing, an encapsulated tank disposed within the housing, a connecting support member connecting the housing and the encapsulated tank, a carrier filled within the encapsulated tank, and a hydrogen scavenging catalyst coated on the carrier. The encapsulated tank is one or more and is spaced apart; the encapsulated tank is a cylinder or a cuboid; or, the connecting support member includes a connecting flange and a drainage channel. The connecting flange connects multiple encapsulated tanks, and the drainage channel is disposed between the connecting flange and the housing so that the condensed water in the hydrogen fuel cell exhaust can be discharged from the drainage channel. When the encapsulated tank is designed as a cylinder, the gas pressure is evenly distributed in all directions on the cross-section of the cylinder. When the encapsulated tank is designed as a cuboid, a special structure is required to offset the uneven gas pressure distribution on the square cross-section. For example, by setting reinforcing ribs on the outside of the cuboid to improve the anti-deformation ability and structural stability of the cuboid.

[0013] Furthermore, the solid-state hydrogen storage device includes a shell, a solid-state hydrogen storage module disposed in the shell, and a hydrogen storage alloy material filled in the solid-state hydrogen storage module, and a heat exchange medium flow channel is provided between the shell and the solid-state hydrogen storage module.

[0014] Furthermore, there are multiple solid-state hydrogen storage modules that are arranged at intervals. The solid-state hydrogen storage device also includes longitudinal ribs connected between the outer shell and the solid-state hydrogen storage modules and transverse ribs connected between two adjacent solid-state hydrogen storage modules. The longitudinal ribs and the transverse ribs serve as heat exchange fins to increase the heat exchange area.

[0015] Furthermore, the solid-state hydrogen storage device is a flat rectangular parallelepiped, and the solid-state hydrogen storage device is integrated with the chassis. The solid-state hydrogen storage device does not exceed the frame in the height direction to avoid the passenger space and the trunk space.

[0016] Furthermore, the solid-state hydrogen storage module has an external cooling heat exchange mode and an internal cooling heat exchange mode; when the external cooling heat exchange mode is adopted, the heat exchange medium is filled on the outside of the solid-state hydrogen storage module, and the heat of the heat exchange medium is transferred between the solid-state hydrogen storage module and the hydrogen storage alloy material; when the internal cooling heat exchange mode is adopted, the heat exchange medium is built into the hydrogen storage alloy material through a heat exchange pipeline, and the heat of the heat exchange medium is transferred between the hydrogen storage alloy material and the internal heat exchange pipeline.

[0017] Furthermore, the hydrogen fuel cell has a coolant outlet, and the high-temperature coolant discharged from the coolant outlet is connected to the solid-state hydrogen storage device and the main radiator respectively through an electrically controlled three-way proportional valve. The hydrogen storage alloy material in the solid-state hydrogen storage device absorbs heat in the high-temperature coolant through heat exchange to release hydrogen.

[0018] Furthermore, a coolant quick-connect connector is provided on the solid-state hydrogen storage device. When the solid-state hydrogen storage device uses the online hydrogenation mode, the external chiller is connected to the coolant quick-connect connector. The ice water in the external chiller takes away the heat generated by the hydrogen absorption reaction of the hydrogen storage alloy material in the solid-state hydrogen storage device to release hydrogen.

[0019] According to another aspect of the present invention, a vehicle is provided, comprising a vehicle body, a chassis and the above-mentioned power assembly.

[0020] Applying the technical solution of the present invention, the powertrain includes: a power battery, a drive motor, a hydrogen fuel cell, a solid-state hydrogen storage device, and a hydrogen-consuming catalytic converter. The power battery can supply power to the drive motor. The hydrogen fuel cell is electrically connected to the power battery and the drive motor, and the hydrogen fuel cell can charge the power battery and supply power to the drive motor. The solid-state hydrogen storage device is communicated with the hydrogen inlet of the hydrogen fuel cell. The solid-state hydrogen storage device has two modes: online hydrogen addition and hydrogen replacement. The hydrogen-consuming catalytic converter is communicated with the exhaust gas outlet of the hydrogen fuel cell. In this way, by integrating the power battery and the hydrogen fuel cell together, the powertrain forms a hydrogen fuel cell range-extended architecture, reducing the cost of the powertrain. And because the hydrogen storage density per unit volume of the solid-state hydrogen storage device is relatively high, and the solid-state hydrogen storage device is in the same flat shape as the battery pack (even an irregular special-shaped structure), the occupation of the vehicle interior space is reduced, and the available interior space of the vehicle with the powertrain of the present application is increased. Since the internal pressure of the solid-state hydrogen storage device is relatively low, the requirements for the pressure-bearing capacity and airtightness of the solid-state hydrogen storage device are reduced, thereby reducing the cost of the hydrogen storage system and the safety hazard of hydrogen leakage. Through the setting of the hydrogen-consuming catalytic converter, the exhaust gas discharged from the hydrogen fuel cell can be catalytically treated, greatly reducing the hydrogen content in the exhaust gas discharged from the hydrogen fuel cell, eliminating the risk of hydrogen in the exhaust gas accumulating and catching fire and exploding in a confined space, and improving the safety. Therefore, the technical solution of the present application effectively solves the problems that in the current market, the interior space of hydrogen fuel cell passenger cars is occupied more by high-pressure hydrogen storage systems, the cost of the power system is relatively high, the safety hazard is relatively large, and the vehicle cannot enter the confined space of the underground garage.

[0021] Moreover, the hydrogen fuel cell is electrically connected to the power battery and the drive motor through a high-voltage PDU. By integrating a large-capacity power battery with a small-power hydrogen fuel cell together, the powertrain forms a hydrogen fuel cell range-extended architecture, further reducing the cost of the powertrain. When the solid-state hydrogen storage device uses the hydrogen replacement mode, hydrogen can be provided for the vehicle by replacing the entire solid-state hydrogen storage device, and the replacement speed is fast, which can reduce the dependence on the hydrogen refueling station. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specification drawings forming a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 The connection schematic diagrams of the cooling circuit, gas circuit, and energy flow of the embodiment of the powertrain according to the present invention are shown;

[0024] Figure 2 It shows Figure 1 the connection schematic diagrams of the cooling circuit and gas circuit when the solid-state hydrogen storage device of the powertrain uses the hydrogen replacement mode;

[0025] Figure 3 Shows Figure 1 Schematic diagram of the connection of the cooling circuit and the gas circuit when the solid-state hydrogen storage device of the powertrain uses the on-line hydrogenation mode;

[0026] Figure 4 Shows Figure 1 Schematic diagram of the connection of the cooling circuit and the gas circuit when the solid-state hydrogen storage device of the powertrain can use both on-line hydrogenation and hydrogen replacement modes;

[0027] Figure 5 Shows Figure 1 Top view schematic diagram of the solid-state hydrogen storage device of the powertrain;

[0028] Figure 6 Shows Figure 1 Cross-sectional schematic diagram when the solid-state hydrogen storage module of the solid-state hydrogen storage device of the powertrain is a cuboid;

[0029] Figure 7 Shows Figure 1 Cross-sectional schematic diagram when the solid-state hydrogen storage module of the solid-state hydrogen storage device of the powertrain is a cylinder;

[0030] Figure 8 Shows Figure 7 Cross-sectional schematic diagram of the solid-state hydrogen storage module of the solid-state hydrogen storage device of the powertrain with heat exchange pipelines arranged therein;

[0031] Figure 9 Shows Figure 1 Three-dimensional structure schematic diagram of the heat exchange pipeline of the powertrain;

[0032] Figure 10 Shows Figure 1 Cross-sectional schematic diagram of the hydrogen elimination catalytic converter of the powertrain;

[0033] Figure 11 Shows Figure 1 Three-dimensional structure schematic diagram of the hydrogen elimination catalytic converter of the powertrain without showing the housing.

[0034] Among them, the above-mentioned drawings include the following reference numerals:

[0035] 10. Hydrogen fuel cell;

[0036] 20. Solid-state hydrogen storage device; 24. Outer shell; 25. Solid-state hydrogen storage module; 271. Longitudinal rib; 272. Transverse rib; 28. Heat exchange pipeline; 29. Mounting lug;

[0037] 30. Hydrogen transmission pipeline; 31. Heating pipeline; 32. Cooling pipe;

[0038] 44. Fourth quick connector; 45. Fifth quick connector;

[0039] 50. Hydrogen elimination catalytic converter;

[0040] 61. Housing; 62. Encapsulation tank; 63. Carrier; 65. Connection support; 651. Connection flange; 652. Drainage channel;

[0041] 80. Low-temperature cold start solid hydrogen storage bottle. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0045] To achieve the above object, as Figures 1 to 4As shown in the figure, this embodiment provides a powertrain, which includes: a power battery, a drive motor, a hydrogen fuel cell 10, a solid-state hydrogen storage device 20, and a hydrogen-consuming catalytic converter 50. The power battery can supply power to the drive motor. The hydrogen fuel cell 10 is electrically connected to the power battery and the drive motor, and the hydrogen fuel cell 10 can charge the power battery and supply power to the drive motor. The solid-state hydrogen storage device 20 is communicated with the hydrogen inlet of the hydrogen fuel cell 10. The solid-state hydrogen storage device 20 has two modes: online hydrogen addition and hydrogen replacement. The hydrogen-consuming catalytic converter 50 is communicated with the tail gas discharge port of the hydrogen fuel cell 10.

[0046] In this way, by integrating the power battery with the hydrogen fuel cell 10, the powertrain forms a hydrogen fuel cell extended-range architecture, reducing the cost of the powertrain. And because the hydrogen storage density per unit volume of the solid-state hydrogen storage device 20 is relatively high, and the solid-state hydrogen storage device 20 is flat like a battery pack (even an irregular special-shaped structure), it further reduces the occupation of the vehicle's internal space and increases the available internal space of the vehicle with the powertrain of this application. Since the internal pressure of the solid-state hydrogen storage device 20 is relatively low, the requirements for the pressure-bearing capacity and airtightness of the solid-state hydrogen storage device 20 are reduced, thereby reducing the cost of the hydrogen storage system and the safety hazard of hydrogen leakage. Through the setting of the hydrogen-consuming catalytic converter 50, the tail gas discharged by the hydrogen fuel cell 10 can be catalytically treated, greatly reducing the hydrogen content in the tail gas discharged by the hydrogen fuel cell 10, eliminating the risk of the hydrogen in the tail gas gathering and catching fire and exploding in a confined space, and improving safety. Therefore, the technical solution of this embodiment effectively solves the problems that the internal space of hydrogen fuel cell passenger cars in the current market is occupied more by high-pressure hydrogen storage systems, the cost of the power system is relatively high, the safety hazard is relatively large, and the vehicle cannot enter the confined space of the underground garage.

[0047] Moreover, the hydrogen fuel cell is electrically connected to the power battery and the drive motor through a high-voltage PDU. By integrating a large-capacity power battery with a small-power hydrogen fuel cell, the powertrain forms a hydrogen fuel cell extended-range architecture, further reducing the cost of the powertrain. When the solid-state hydrogen storage device 20 uses the hydrogen replacement mode, hydrogen can be provided for the vehicle by replacing the entire solid-state hydrogen storage device 20, and the replacement speed is fast, which can reduce the dependence on the hydrogen refueling station.

[0048] In this embodiment, when the solid-state hydrogen storage device 20 uses the online hydrogenation mode, hydrogen can be added into the solid-state hydrogen storage device 20. When the solid-state hydrogen storage device 20 uses the hydrogen replacement mode, the solid-state hydrogen storage device 20 can be replaced. The electrical connection between the power battery, the drive motor, and the hydrogen fuel cell 10 realizes efficient energy distribution and management. Under different driving conditions, the system can flexibly switch the energy source between the power battery and the hydrogen fuel cell 10 according to needs, which not only ensures the energy supply of the vehicle during long-distance driving but also makes full use of the high-efficiency characteristics of the power battery during short-distance and rapid acceleration, thus improving the performance and economy of the vehicle as a whole.

[0049] Furthermore, the rated power of the hydrogen fuel cell 10 is greater than or equal to 10 kW and less than or equal to 50 kW, and the capacity of the power battery is greater than or equal to 10 kWh and less than or equal to 40 kWh. In this way, the power battery has a relatively large capacity and can be used as an electric energy storage system for the vehicle's daily short-distance commuting, rapid acceleration, and rapid deceleration. The rated power of the hydrogen fuel cell 10 is relatively small. The hydrogen fuel cell 10 serves as a range extender for the vehicle and provides power during long-distance driving. According to the vehicle's overall energy management strategy, the above two forms of power supply can be flexibly utilized. The parameter settings of the hydrogen fuel cell 10 and the power battery not only meet the power demands during daily commuting and rapid acceleration but also ensure the energy supply during high-speed long-distance driving, enabling the hydrogen fuel cell 10 extended-range hybrid vehicle using the powertrain in this embodiment to adapt to a wider range of usage scenarios. Moreover, using the hydrogen fuel cell 10 as a range extender reduces the vehicle cost and facilitates popularization.

[0050] In this embodiment, when the vehicle needs high power such as overtaking or climbing a slope, the hydrogen fuel cell 10 and the power battery jointly supply power to the drive motor. The hydrogen fuel cell 10 can cover the power demand ranges commonly used in A0-class, A-class, A+-class, B-class, SUV, and MPV passenger cars. The hydrogen fuel cell 10 can directly drive the drive motor or charge the power battery. The power battery can provide a pure electric range of no less than 100 km and is also used to provide power during rapid acceleration and recover energy during rapid deceleration.

[0051] In other embodiments, the rated power of the hydrogen fuel cell 10 is greater than or equal to 10 kW and less than or equal to 50 kW. Or, the capacity of the power battery is greater than or equal to 10 kWh and less than or equal to 40 kWh.

[0052] Such as Figures 5 to 11As shown, the solid-state hydrogen storage device 20 includes a solid-state hydrogen storage module 25 and a hydrogen storage alloy material arranged in the solid-state hydrogen storage module 25; the hydrogen supply pressure in the solid-state hydrogen storage module 25 is greater than or equal to 0.5MPa and less than or equal to 1.6MPa; the temperature of the heat exchange medium in the solid-state hydrogen storage module 25 is less than or equal to 90°C. The above-mentioned configuration makes the solid-state hydrogen storage device 20 have lower requirements on the sealing performance and pressure bearing of the hydrogen storage system, thereby reducing the cost of the hydrogen storage system and the cost of the power system. Since the internal pressure required by the solid-state hydrogen storage module 25 is relatively small and the temperature requirement for the heat exchange medium is relatively low, the production cost of the solid-state hydrogen storage device 20 is reduced. The hydrogen storage alloy material can store hydrogen and reduce the temperature and pressure requirements of the solid-state hydrogen storage device 20, so that the solid-state hydrogen storage device 20 can be used in a normal temperature and low pressure environment, and also reduces the pressure requirements of the hydrogen filling station and reduces the cost. In addition, the solid-state hydrogen storage device 20 adopts a modular design to facilitate the replacement of the solid-state hydrogen storage device 20.

[0053] In the present embodiment, the solid-state hydrogen storage module 25 includes a plastic liner and a carbon fiber layer wrapped around the outer layer of the plastic liner. The plastic liner can play a sealing role, and the carbon fiber layer can improve the structural strength of the plastic liner. The hydrogen storage alloy material is preferably a low-pressure and room-temperature titanium iron, titanium manganese, vanadium-based alloy material or MOFs metal organic framework compound material. Hydrogen molecules can be dissociated into hydrogen atoms by highly active hydrogen storage alloy materials, and the hydrogen atoms react with the hydrogen storage alloy material alloy to generate metal hydrides, which are stored in the form of solid hydrides in the solid-state hydrogen storage device 20. The charging and discharging pressure of the solid-state hydrogen storage device 20 is relatively small, so that the online hydrogenation of the whole vehicle no longer requires the construction of a high-pressure hydrogenation station, which reduces the construction cost of the hydrogenation station and is conducive to the promotion of the vehicle in this embodiment.

[0054] The inventor found that the current hydrogen fuel cell passenger cars use a full-power drive architecture of hydrogen fuel cells, which is expensive and cannot be popularized on a large scale to enter the civilian market. The hydrogen storage system used in hydrogen fuel cell passenger cars is a 70Mpa cylindrical carbon fiber wrapped high-pressure hydrogen storage bottle. Due to its large size, it occupies more passenger space and trunk space. At the same time, the sealing requirements are high, the system cost is high, and it is also required to build a 70Mpa high-pressure hydrogen refueling station for hydrogen refueling. However, due to safety and regulatory issues in China, it is difficult to build 70Mpa hydrogen refueling stations on a large scale in urban areas, and it is impossible to support the large-scale use of hydrogen fuel cell passenger cars. The application of the technical solution of this embodiment makes the vehicle in this embodiment have lower pressure requirements on the hydrogen refueling station, reduces the cost of establishing the hydrogen refueling station, and facilitates popularization.

[0055] like Figure 1As shown in the figure, outside the solid-state hydrogen storage device 20, there is also a low-temperature cold-start solid-state hydrogen storage cylinder 80. The low-temperature cold-start solid-state hydrogen storage cylinder 80 is connected to the hydrogen inlet of the hydrogen fuel cell 10 through a bottle mouth combination valve. The hydrogen capacity of the low-temperature cold-start solid-state hydrogen storage cylinder 80 is less than or equal to 100 grams. The low-temperature cold-start solid-state hydrogen storage cylinder 80 is only used for supplying hydrogen during the low-temperature cold start of the hydrogen fuel cell 10 when the ambient temperature is below zero degrees Celsius. After the low-temperature cold start, the hydrogen fuel cell 10 is supplied with hydrogen by the solid-state hydrogen storage device 20. An electric heating film is provided outside the low-temperature cold-start solid-state hydrogen storage cylinder 80, and the electric heating film is powered by a power battery. The setting of the low-temperature cold-start solid-state hydrogen storage cylinder 80 can, when the temperature is relatively low, provide heat through the electric heating film and generate hydrogen to supply to the hydrogen fuel cell 10. After the hydrogen fuel cell 10 starts, it can discharge coolant (hot water) at a relatively high temperature to be conveyed to the solid-state hydrogen storage device 20, so that the solid-state hydrogen storage device 20 can absorb heat and release hydrogen to supply to the hydrogen fuel cell 10. In this embodiment, when the temperature before vehicle startup is greater than or equal to the preset temperature, the hydrogen storage alloy material can absorb the heat of the coolant discharged by the hydrogen fuel cell 10 to heat the hydrogen storage alloy material in the solid-state hydrogen storage device 20 and release hydrogen. When the temperature before vehicle startup is less than the preset temperature, the electric heating film heats the hydrogen storage alloy material in the low-temperature cold-start solid-state hydrogen storage cylinder 80 to enable the low-temperature cold-start solid-state hydrogen storage cylinder 80 to release hydrogen.

[0056] In this embodiment, the low-temperature cold-start solid-state hydrogen storage cylinder 80 is preferably one. The hydrogen capacity of the low-temperature cold-start solid-state hydrogen storage cylinder 80 is much smaller than that of the solid-state hydrogen storage device 20. The bottle mouth combination valve is a multi-functional bottle mouth combination valve.

[0057] As Figures 5 to 11 shown in the figure, the hydrogen-consuming catalytic converter 50 includes a housing 61, a carrier 63 arranged in the housing 61, and a hydrogen-consuming catalyst coated on the carrier 63. The shape of the carrier 63 is spherical. The material of the carrier 63 is a porous material. The setting of the hydrogen-consuming catalytic converter 50 can catalyze the hydrogen discharged in the tail gas to generate water during the shutdown purge of the hydrogen fuel cell 10, solving the safety problem of current vehicles parked in enclosed spaces such as underground garages in the market. By catalytically converting the hydrogen and oxygen in the tail gas into water through the hydrogen-consuming catalytic converter 50, the hydrogen-consuming catalytic converter 50 effectively avoids the risk of combustion and explosion caused by hydrogen accumulation, improves the safety of the vehicle, and provides guarantee for the use of the vehicle in the underground garage. The carrier is spherical, and the spherical setting can reduce the flow resistance of the gas, and the specific surface area of the spherical shape is relatively large, increasing the reaction area of the carrier 63 and improving the catalytic efficiency.

[0058] In this embodiment, the carrier 63 is preferably molecular sieve, alumina or activated carbon. Alternatively, the carrier 63 is other porous materials with developed pore structures, which increases the reaction area of the carrier 63 and improves the catalytic efficiency. The carrier 63 preferably uses noble metals such as Pd or Pd and Pt as the main active components.

[0059] In other embodiments, the carrier 63 is spherical, or the carrier 63 is a porous material.

[0060] As Figures 5 to 11 shown, the hydrogen-consuming catalytic converter 50 includes a housing 61, a packaged tank body 62 arranged in the housing 61, a connection support member 65 connecting the housing 61 and the packaged tank body 62, a carrier 63 filled in the packaged tank body 62, and a hydrogen-consuming catalyst coated on the carrier 63. The packaged tank body 62 is one or more and arranged at intervals; the packaged tank body 62 is a cylinder; alternatively, the connection support member 65 includes a connection flange 651 and a drainage channel 652. The connection flange 651 connects multiple packaged tank bodies 62, and the drainage channel 652 is arranged between the connection flange 651 and the housing 61 so that the condensed water in the hydrogen fuel cell 10 can be discharged from the drainage channel 652. In this way, the setting of the connection flange 651 can fix multiple packaged tank bodies 62, and the setting of the drainage channel 652 facilitates the discharge of the condensed water generated by the hydrogen fuel cell 10 from the drainage channel 652, reducing the accumulated water in the packaged tank body 62.

[0061] In this embodiment, the packaged tank body 62 is designed as a cylinder so that the gas pressure is evenly distributed in all directions on the cross-section of the cylinder.

[0062] In other embodiments, when the packaged tank body is designed as a cuboid, a special structure is required to offset the uneven gas pressure on the square cross-section. In other embodiments, by arranging reinforcing ribs on the outer side of the cuboid, the anti-deformation ability and structural stability of the cuboid are improved (such as support ribs or reinforcing ribs arranged on the outer side of the cuboid).

[0063] In this embodiment, the drainage channel 652 is located below the packaged tank body 62 to facilitate the discharge of water. The hydrogen-consuming catalytic converter 50 has a tail gas inlet and a tail gas outlet. The hydrogen-consuming catalytic converter 50 is inclined or vertically arranged so that the tail gas inlet is higher than the tail gas outlet, facilitating the rapid discharge of the water in the drainage channel 652 and reducing the retention and accumulation of liquid water. The material of the packaged tank body 62 is preferably stainless steel or aluminum alloy.

[0064] As Figures 5 to 11As shown, the solid-state hydrogen storage device 20 includes a housing 24, a solid-state hydrogen storage module 25 disposed within the housing 24, and a hydrogen storage alloy material filled within the solid-state hydrogen storage module 25. A heat exchange medium flow channel is provided between the housing 24 and the solid-state hydrogen storage module 25. The provision of the heat exchange medium flow channel facilitates the absorption of heat within the solid-state hydrogen storage module 25, improves the heat dissipation efficiency of the solid-state hydrogen storage device 20, and ensures that the hydrogen storage alloy material can undergo hydrogen absorption and desorption reactions at an optimal operating temperature. The material of the housing 24 is preferably stainless steel or aluminum alloy.

[0065] In this embodiment, the solid-state hydrogen storage device 20 further includes a rapid release channel, a hydrogen flow meter, a multi-functional bottle mouth combined valve, a check valve, and a pressure reducer. The rapid release channel is connected to the solid-state hydrogen storage module 25. When the pressure within the solid-state hydrogen storage module 25 is higher than a preset pressure value, the rapid release channel opens to discharge a portion of the hydrogen within the solid-state hydrogen storage module 25. The hydrogen flow meter is disposed at the hydrogen filling port of the solid-state hydrogen storage module 25 to detect the hydrogen filling amount during on-line hydrogen filling. The multi-functional bottle mouth combined valve is disposed at the gas outlet of the solid-state hydrogen storage module 25 to detect the hydrogen usage amount within the solid-state hydrogen storage module 25. The multi-functional bottle mouth combined valve is a multi-functional combined valve, having a switching function, a cut-off function, a check valve function, and a pressure relief device. When the multi-functional bottle mouth combined valve detects a relatively high temperature, the pressure relief device controls the rapid release channel to open to discharge a portion of the hydrogen within the solid-state hydrogen storage module 25. The check valve is disposed between the hydrogen inlet and the solid-state hydrogen storage device 20 to control the flow direction of hydrogen. The pressure reducer is located between the multi-functional bottle mouth combined valve and the hydrogen fuel cell 10.

[0066] As Figures 5 to 11As shown, there are multiple solid-state hydrogen storage modules 25 which are spaced apart. The solid-state hydrogen storage device 20 further includes longitudinal ribs 271 connected between the housing 24 and the solid-state hydrogen storage modules 25 and transverse ribs 272 connected between two adjacent solid-state hydrogen storage modules 25. The longitudinal ribs 271 and the transverse ribs 272 serve as heat exchange fins to increase the heat exchange area. Both the longitudinal ribs 271 and the transverse ribs 272 can increase the heat dissipation area of the solid-state hydrogen storage module 25. And both the longitudinal ribs 271 and the transverse ribs 272 can improve the structural strength of the solid-state hydrogen storage device 20. Since the pressure in the solid-state hydrogen storage module 25 changes during hydrogen charging and discharging of the solid-state hydrogen storage device 20, the longitudinal ribs 271 and the transverse ribs 272 can support the shell wall surface of the solid-state hydrogen storage module 25, improve the structural strength of the solid-state hydrogen storage module 25, and reduce the stress of the solid-state hydrogen storage module 25 under the internal pressure. In this embodiment, both the longitudinal ribs 271 and the transverse ribs 272 are located in the heat exchange medium flow channel, and both the longitudinal ribs 271 and the transverse ribs 272 are connected to the solid-state hydrogen storage module 25, so that the heat in the solid-state hydrogen storage module 25 can be transported from the longitudinal ribs 271 and the transverse ribs 272 to the heat exchange medium flow channel for heat dissipation, improving the heat dissipation efficiency of the solid-state hydrogen storage device 20, ensuring that the hydrogen storage alloy material undergoes hydrogen absorption and desorption reactions at the optimal working temperature, and enhancing the stability and service life of the solid-state hydrogen storage device 20.

[0067] As Figures 5 to 11 shown, the shape of the solid-state hydrogen storage module 25 is a cuboid or a cylinder. The structure of the solid-state hydrogen storage module 25 is simple and compact, reducing the space occupation. In this embodiment, the solid-state hydrogen storage device 20 further includes mounting lugs 29 provided on the housing 24. The solid-state hydrogen storage device 20 forms a rectangle on the horizontal plane, and the mounting lugs 29 are located on the long side of the rectangle. There are multiple mounting lugs 29, and the multiple lugs are spaced apart on at least one long side of the rectangle. The mounting lugs 29 are used to connect to the vehicle chassis to facilitate the installation of the solid-state hydrogen storage device 20.

[0068] As Figures 5 to 11 shown, the solid-state hydrogen storage device 20 is a flat cuboid. The solid-state hydrogen storage device 20 is integrated with the chassis design, and the solid-state hydrogen storage device 20 does not exceed the vehicle frame in the height direction to avoid the passenger space and the trunk space. In this way, the solid-state hydrogen storage device 20 can not occupy the passenger space and the trunk space of the whole vehicle.

[0069] In this embodiment, the solid-state hydrogen storage device 20 being a flat cuboid means that when the solid-state hydrogen storage device 20 is arranged on the chassis, the height of the solid-state hydrogen storage device 20 is 100 mm to 200 mm, the length is 500 mm to 2000 mm, and the width is 500 mm to 1500 mm.

[0070] As Figures 5 to 11As shown, the shape of the solid-state hydrogen storage module 25 is a cuboid, which has a first plane and a second plane connected at an angle to the first plane. The longitudinal ribs 271 are connected between the first plane and the outer shell 24, and the transverse ribs 272 are connected between the second planes of two adjacent solid-state hydrogen storage modules 25. The cuboid design of the solid-state hydrogen storage module 25 reduces the distance between the solid-state hydrogen storage module 25 and the outer shell 24, and can also reduce the distance between two adjacent solid-state hydrogen storage modules 25, so that the solid-state hydrogen storage device 20 can accommodate more hydrogen storage alloy materials, improving the volume utilization rate of the solid-state hydrogen storage device 20.

[0071] As Figures 5 to 11 shown, the solid-state hydrogen storage module 25 has an external cooling and heat exchange mode and an internal cooling and heat exchange mode; when the external cooling and heat exchange mode is adopted, the heat exchange medium is filled outside the solid-state hydrogen storage module 25, and the heat of the heat exchange medium is transferred through the solid-state hydrogen storage module 25 and the hydrogen storage alloy material; when the internal cooling and heat exchange mode is adopted, the heat exchange medium is built into the hydrogen storage alloy material through the heat exchange pipeline, and the heat of the heat exchange medium is transferred through the built-in heat exchange pipeline and the hydrogen storage alloy material. The settings of the external cooling and heat exchange mode and the internal cooling and heat exchange mode make the cooling form of the solid-state hydrogen storage device 20 more flexible. In this embodiment, when the solid-state hydrogen storage device 20 uses the online hydrogenation mode, the solid-state hydrogen storage device 20 uses the internal cooling mode. When the solid-state hydrogen storage device 20 uses the hydrogen exchange mode, the solid-state hydrogen storage device 20 uses the external cooling mode.

[0072] In this embodiment, the material of the heat exchange pipeline 28 is preferably aluminum alloy, copper or silver. The heat exchange pipeline 28 is in a snake shape or other shapes with more complex structures and higher heat transfer efficiency. The heat exchange pipeline 28 is meandering in a three-dimensional space and arranged in the solid-state hydrogen storage module 25 to form a plurality of heat exchange tube groups arranged in a snake shape on multiple parallel surfaces respectively. The heat exchange pipeline 28 includes a plurality of connected and spaced heat exchange tube segments, and at least part of the hydrogen storage alloy material is located between two adjacent heat exchange tube segments.

[0073] As Figure 1As shown, the hydrogen fuel cell 10 has a coolant outlet. The high-temperature coolant discharged from the coolant outlet passes through an electronically controlled three-way proportional valve and is respectively connected to the solid-state hydrogen storage device 20 and the main radiator. The hydrogen storage alloy material in the solid-state hydrogen storage device 20 absorbs the heat in the high-temperature coolant through heat exchange to release hydrogen. The electronically controlled three-way proportional valve can connect the hydrogen fuel cell 10 to the solid-state hydrogen storage device 20, and the electronically controlled three-way proportional valve can also connect the hydrogen fuel cell 10 to the main radiator. The relatively high-temperature coolant in the hydrogen fuel cell 10 can be transported to the main radiator for cooling. In this way, the electronically controlled three-way proportional valve can distribute the relatively high-temperature coolant in the hydrogen fuel cell 10 so that the relatively high-temperature coolant in the hydrogen fuel cell 10 is transported to the solid-state hydrogen storage device 20 or the main radiator. When the solid-state hydrogen storage device 20 absorbs heat and releases hydrogen, it can absorb heat and cool the relatively high-temperature coolant in the hydrogen fuel cell 10. Therefore, the heat dissipation power of the main radiator can be reduced, and the volume and use cost of the main radiator are reduced.

[0074] In this embodiment, the powertrain further includes an electronically controlled three-way valve and a muffler. The electronically controlled three-way valve can connect the exhaust gas outlet of the hydrogen fuel cell 10 to the hydrogen-consuming catalytic converter, or the electronically controlled three-way valve can connect the exhaust gas outlet of the hydrogen fuel cell 10 to the muffler. In this way, when the vehicle is driving on an open road surface, the electronically controlled three-way valve connects the exhaust gas outlet of the hydrogen fuel cell 10 to the muffler so that the muffler can perform sound insulation. When the vehicle is in a closed space such as a basement, the electronically controlled three-way valve connects the exhaust gas outlet of the hydrogen fuel cell 10 to the hydrogen-consuming catalytic converter so that the hydrogen-consuming catalytic converter can catalytically convert hydrogen and oxygen in the exhaust gas into water.

[0075] As Figures 1 to 4 shown, the hydrogen fuel cell 10 further has a coolant inlet, the solid-state hydrogen storage device 20 has a heat exchange liquid outlet, and the powertrain further includes a cooling pipe 32 that can be connected between the heat exchange liquid outlet and the coolant inlet. The cooling pipe 32 can cool and lower the temperature of the hydrogen fuel cell 10. In this way, the coolant cooled by the solid-state hydrogen storage device 20 absorbing heat can be transported to the hydrogen fuel cell 10 through the cooling pipe 32 to cool and lower the temperature of the hydrogen fuel cell 10. The solid-state hydrogen storage device 20 can cool the relatively high-temperature coolant (hot water) flowing out of the hydrogen fuel cell 10 and transport the cooled coolant (cold water) to the hydrogen fuel cell 10, further improving the energy utilization rate.

[0076] In this embodiment, the solid-state hydrogen storage device 20 has a heat exchange liquid inlet. The powertrain further includes a heating pipeline 31 connected between the heat exchange liquid inlet and the coolant outlet, and an electronically controlled three-way proportional valve is arranged on the heating pipeline 31. The powertrain further includes a deionizer. The deionizer is connected to the coolant inlet of the hydrogen fuel cell 10, and both the main radiator and the cooling pipe 32 are connected to the coolant inlet of the hydrogen fuel cell 10 through the deionizer. The setting of the deionizer can effectively prevent the coolant from scaling, thereby improving the heat exchange efficiency.

[0077] In this embodiment, a first quick connector and a second quick connector communicating with the heat exchange medium flow channel are arranged on the housing 24. The first quick connector can connect or disconnect the heating pipeline 31. The second quick connector can connect or disconnect the cooling pipe 32. In this way, when the solid-state hydrogen storage device 20 uses the hydrogen replacement mode, the on-off of the heating pipeline 31 and the cooling pipe 32 can be quickly and conveniently controlled, facilitating the operation of replacing the solid-state hydrogen storage device 20. The powertrain further includes a third quick connector arranged at the second end of the hydrogen transmission pipeline 30 or on the solid-state hydrogen storage device 20, so as to quickly connect or disconnect the connection between the hydrogen transmission pipeline 30 and the solid-state hydrogen storage device 20, facilitating the quick replacement of the solid-state hydrogen storage device 20. The third quick connector is a hydrogen pipeline quick connector.

[0078] Further, a coolant quick connector is arranged on the solid-state hydrogen storage device 20. When the solid-state hydrogen storage device 20 uses the on-line hydrogen addition mode, the solid-state hydrogen storage device 20 releases heat. Connect the external chiller to the coolant quick connector, and the ice water in the external chiller takes away the heat generated by the hydrogen absorption reaction of the hydrogen storage alloy material in the solid-state hydrogen storage device 20. The setting of the coolant quick connector makes the connection between the solid-state hydrogen storage device 20 and the external chiller more convenient and fast, facilitating the heat exchange operation of the solid-state hydrogen storage device 20. In this embodiment, the coolant quick connector includes a fourth quick connector 44 and a fifth quick connector 45 arranged on the solid-state hydrogen storage device 20. The ice water in the external chiller can flow into the solid-state hydrogen storage device 20 through the fourth quick connector 44, and then the hot water flows back to the external chiller through the fifth quick connector 45.

[0079] In this embodiment, the powertrain further includes a sixth quick connector communicating with the hydrogen inlet, so as to facilitate the connection between an external hydrogen refueling machine and the sixth quick connector to achieve on-line hydrogen addition, which is convenient and fast.

[0080] This application also provides a vehicle, which includes a vehicle body, a chassis and the above-mentioned powertrain.

[0081] In this embodiment, the solid-state hydrogen storage device 20 is designed to be flat and integrally installed on the chassis, reducing the occupation of the passenger space and the trunk space.

[0082] In this embodiment, the vehicle is a hydrogen fuel cell extended-range hybrid passenger vehicle using low-pressure and normal-temperature solid hydrogen storage materials. As Figure 5 shown, the solid hydrogen storage device 20 is a cuboid. The solid hydrogen storage device 20 and the power battery of the powertrain are arranged at intervals or adjacent to each other on the chassis, and the upper surface of the solid hydrogen storage device 20 is flush with the lower surface of the power battery. The flush setting of the solid hydrogen storage device 20 and the power battery not only reduces the space occupied by the powertrain, but also enables the solid hydrogen storage device 20 and the power battery to share the chassis space through optimized layout, reducing the encroachment on the passenger compartment space and luggage storage space. Moreover, the solid hydrogen storage device 20 does not occupy the passenger compartment space and trunk space of the vehicle, and can share the chassis with plug-in hybrid vehicles or battery electric vehicles, reducing the vehicle development cost and cycle.

[0083] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0084] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "beneath other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations should be made for the spatial relative descriptions used here.

[0085] In addition, it should be noted that using words such as "first", "second" etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above words have no special meaning, and therefore cannot be understood as a limitation on the protection scope of the present invention.

[0086] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A powertrain, characterized in that, Comprising: A power battery, the capacity of the power battery being greater than or equal to 10 kWh and less than or equal to 40 kWh; A drive motor, the power battery being capable of supplying power to the drive motor; A hydrogen fuel cell (10), the hydrogen fuel cell (10) being electrically connected to the power battery and the drive motor, the hydrogen fuel cell (10) being capable of charging the power battery and supplying power to the drive motor, the rated power of the hydrogen fuel cell (10) being greater than or equal to 10 kW and less than or equal to 50 kW; A solid-state hydrogen storage device (20), communicating with the hydrogen inlet of the hydrogen fuel cell (10), the solid-state hydrogen storage device (20) being in two modes of on-line hydrogen addition and hydrogen replacement, the solid-state hydrogen storage device (20) being a flat cuboid, the solid-state hydrogen storage device (20) being integrally designed with the chassis, and the solid-state hydrogen storage device (20) not exceeding the vehicle frame in the height direction to avoid the passenger space and the trunk space; A hydrogen-consuming catalytic converter (50), communicating with the tail gas emission port of the hydrogen fuel cell (10); the solid-state hydrogen storage device (20) includes a solid-state hydrogen storage module (25) and a hydrogen storage alloy material provided in the solid-state hydrogen storage module (25); Wherein, the hydrogen supply pressure in the solid-state hydrogen storage module (25) is greater than or equal to 0.5 MPa and less than or equal to 1.6 MPa; the temperature of the heat exchange medium in the solid-state hydrogen storage module (25) is less than or equal to 90 °C; the outside of the solid-state hydrogen storage device (20) further includes a low-temperature cold-start solid-state hydrogen storage bottle (80), the low-temperature cold-start solid-state hydrogen storage bottle (80) being communicated with the hydrogen inlet of the hydrogen fuel cell (10) through a bottle combination valve, and the low-temperature cold-start solid-state hydrogen storage bottle (80) being only used for supplying hydrogen during the low-temperature cold start of the hydrogen fuel cell (10) when the ambient temperature is below zero; after the low-temperature cold start of the hydrogen fuel cell (10), hydrogen is supplied by the solid-state hydrogen storage device (20); an electric heating film is provided outside the low-temperature cold-start solid-state hydrogen storage bottle (80), and the electric heating film is powered by the power battery.

2. The powertrain according to claim 1, characterized in that, The hydrogen capacity of the low-temperature cold-start solid-state hydrogen storage bottle (80) is less than or equal to 100 grams.

3. The powertrain according to claim 1, characterized in that, The hydrogen-consuming catalytic converter (50) includes a housing (61), a carrier (63) provided in the housing (61), and a hydrogen-consuming catalyst coated on the carrier (63); The shape of the carrier (63) is spherical; and / or, The material of the carrier (63) is a porous material.

4. The power assembly according to claim 1, wherein The hydrogen-consuming catalytic converter (50) includes a housing (61), a sealed tank body (62) provided in the housing (61), a connecting support member (65) connecting the housing (61) and the sealed tank body (62), a carrier (63) filled in the sealed tank body (62), and a hydrogen-consuming catalyst coated on the carrier (63), and the sealed tank body (62) is provided as one or more spaced apart; The sealed tank body (62) is a cylinder or a cuboid; or, The connecting support (65) comprises a connecting flange (651) and a drainage channel (652); the connecting flange (651) connects a plurality of the packaging cans (62); and the drainage channel (652) is arranged between the connecting flange (651) and the shell (61) so that condensed water in the exhaust gas of the hydrogen fuel cell (10) can be discharged from the drainage channel (652).

5. The powertrain according to claim 4, characterized in that, The solid-state hydrogen storage device (20) comprises a housing (24), a solid-state hydrogen storage module (25) arranged in the housing (24), and a hydrogen storage alloy material filled in the solid-state hydrogen storage module (25); a heat exchange medium flow channel is provided between the housing (24) and the solid-state hydrogen storage module (25).

6. The powertrain according to claim 5, characterized in that, The solid-state hydrogen storage modules (25) are multiple and arranged at intervals. The solid-state hydrogen storage device (20) further comprises longitudinal ribs (271) connected between the housing (24) and the solid-state hydrogen storage modules (25) and transverse ribs (272) connected between two adjacent solid-state hydrogen storage modules (25). The longitudinal ribs (271) and the transverse ribs (272) serve as heat exchange fins to increase the heat exchange area.

7. The powertrain according to claim 6, wherein, The solid-state hydrogen storage module (25) is in an external cooling heat exchange mode and an internal cooling heat exchange mode. When the external cooling heat exchange mode is adopted, a heat exchange medium is filled outside the solid-state hydrogen storage module (25), and the heat of the heat exchange medium is transferred to the hydrogen storage alloy material through the solid-state hydrogen storage module (25); when the internal cooling heat exchange mode is adopted, the heat exchange medium is built into the hydrogen storage alloy material through a heat exchange pipeline, and the heat of the heat exchange medium is transferred to the hydrogen storage alloy material through the built-in heat exchange pipeline.

8. The powertrain according to claim 1, characterized in that, The hydrogen fuel cell (10) has a coolant outlet, and the high-temperature coolant discharged from the coolant outlet is connected to the solid-state hydrogen storage device (20) and the main radiator respectively through an electrically controlled three-way proportional valve, and the hydrogen storage alloy material in the solid-state hydrogen storage device (20) absorbs heat in the high-temperature coolant through heat exchange to release hydrogen.

9. The powertrain according to claim 1, characterized in that, The solid-state hydrogen storage device (20) is provided with a coolant quick-connect connector. When the solid-state hydrogen storage device (20) uses the online hydrogenation mode, an external chiller is connected to the coolant quick-connect connector, and the heat generated by the hydrogen absorption reaction of the hydrogen storage alloy material in the solid-state hydrogen storage device (20) is removed by ice water in the external chiller.

10. A vehicle, comprising a vehicle body, a chassis and a powertrain, characterized in that, The powertrain is the powertrain according to any one of claims 1 to 9.

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