Power assembly and vehicle

Abstract

The invention provides a power assembly and a vehicle, and the power assembly comprises a power battery, a driving motor, a hydrogen fuel cell, a solid hydrogen storage device and a hydrogen elimination catalyst. The power battery can supply power to the driving motor; the hydrogen fuel cell is electrically connected with the power cell and the driving motor, and the hydrogen fuel cell can charge the power cell and supply power to the driving 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 an online hydrogenation mode and a hydrogen exchange mode; and the hydrogen elimination catalyst is communicated with a tail gas discharge port of the hydrogen fuel cell. According to the technical scheme, the problems that the internal space of a hydrogen fuel cell passenger car in the current market is much occupied by a high-pressure hydrogen storage system, the cost of a power system is high, potential safety hazards are large, and the car cannot enter a closed space of an underground garage are effectively solved.

Description

Technical Field

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

[0002] The power system of hydrogen fuel cell passenger cars on the market currently adopts a hydrogen fuel cell full-power drive architecture, and the power battery capacity is relatively small, resulting in high powertrain costs for hydrogen fuel cell passenger cars.

[0003] The hydrogen storage system of hydrogen fuel cell passenger cars uses 70Mpa carbon fiber wrapped high-pressure gaseous hydrogen storage bottle technology. Since hydrogen fuel cell passenger cars require a large amount of hydrogen storage for daily driving, and the cylindrical volume of the high-pressure hydrogen storage bottle is large, it occupies more space inside the vehicle, so that the interior space of the hydrogen fuel cell passenger car is occupied by the high-pressure hydrogen storage system. Since the pressure inside the high-pressure hydrogen storage bottle reaches a high pressure of 70Mpa, the high-pressure hydrogen storage bottle has very high pressure bearing capacity requirements, and a large amount of high-modulus carbon fiber is used. In addition, the high-pressure hydrogen storage bottle has high requirements for airtightness, which makes the hydrogen storage system cost of hydrogen fuel cell passenger cars high. At the same time, the 70Mpa hydrogen storage bottle has high requirements for the sealing performance of the sealing structure. Once the sealing components fail, high-pressure hydrogen will leak, posing a major safety hazard.

[0004] In addition, there is incompletely reacted hydrogen in the exhaust of hydrogen fuel cells, which will be discharged outside the vehicle along with the exhaust. When a vehicle enters a confined space such as a garage, as the hydrogen in the exhaust of hydrogen fuel cells continues to accumulate, the concentration of hydrogen in the confined space increases, posing a high risk of fire and explosion, and poor safety.

[0005] As a result, the interior space of hydrogen fuel cell passenger vehicles currently on the market is largely occupied by the high-pressure hydrogen storage system, the power system cost is high, the safety hazard is greater, and the vehicle cannot enter the enclosed space of the underground garage. Summary of the invention

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

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a power assembly, comprising: a power battery; a drive motor, the power battery can supply power to the drive motor; a hydrogen fuel cell, the hydrogen fuel cell is electrically connected to the power battery and the drive motor, the hydrogen fuel cell can charge the power battery and supply power to the drive motor; a solid-state hydrogen storage device, connected to the hydrogen inlet of the hydrogen fuel cell, the solid-state hydrogen storage device has two modes of online hydrogenation and hydrogen exchange; and a hydrogen removal catalyst, connected to the exhaust outlet of the hydrogen fuel cell.

[0008] Furthermore, 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] Furthermore, the solid-state hydrogen storage device includes a solid-state hydrogen storage module and a hydrogen storage alloy material arranged in the solid-state hydrogen storage module; the hydrogen supply pressure in the solid-state hydrogen storage module is greater than or equal to 0.5.MPa and less than or equal to 1.6MPa; the temperature of the heat exchange medium in the solid-state hydrogen storage module is less than or equal to 90°C.

[0010] Furthermore, the solid-state hydrogen storage device also includes a low-temperature cold start solid-state hydrogen storage bottle, which is connected to the hydrogen inlet of the hydrogen fuel cell through a bottle mouth combination valve, the hydrogen capacity of the low-temperature cold start solid-state hydrogen storage bottle is less than or equal to 100 grams, and the low-temperature cold start solid-state hydrogen storage bottle is only used for hydrogen supply during low-temperature cold start of the hydrogen fuel cell when the ambient temperature is below zero degrees; the hydrogen fuel cell is supplied with hydrogen by the solid-state hydrogen storage device after the low-temperature cold start; an electric heating film is arranged on the outside of the low-temperature cold start solid-state hydrogen storage bottle, and the electric heating film is powered by a power battery.

[0011] Furthermore, the hydrogen removal catalyst comprises a shell, a carrier arranged in the shell, and a hydrogen removal catalyst coated on the carrier; the carrier is spherical in shape; and / or the material of the carrier is a porous material.

[0012] Furthermore, the dehydrogenation catalyst includes a shell, a packaged tank body arranged in the shell, a connecting support connecting the shell and the packaged tank body, a carrier filled in the packaged tank body, and a dehydrogenation catalyst coated on the carrier, the packaged tank body is arranged in one or more intervals; the packaged tank body is a cylinder or a rectangular parallelepiped; or, the connecting support includes a connecting flange and a drainage channel, the connecting flange connects multiple packaged tank bodies, and the drainage channel is arranged between the connecting flange and the shell, so that the condensed water in the exhaust gas of the hydrogen fuel cell can be discharged from the drainage channel. When the packaged tank body is designed as a cylinder, the gas pressure in all directions on the cross section of the cylinder is evenly distributed. When the packaged tank body is designed as a rectangular parallelepiped, a special structure is required to offset the unevenly distributed gas pressure on the square cross section, for example, by arranging reinforcing ribs on the outside of the rectangular parallelepiped to improve the deformation resistance and structural stability of the rectangular parallelepiped.

[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 packaging tank body, and the heat of the heat exchange medium is transferred between the packaging tank body 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 the heat exchange pipeline, and the heat of the heat exchange medium is transferred between the hydrogen storage alloy material through the built-in 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 elimination catalyst. 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 connected to the hydrogen inlet of the hydrogen fuel cell. The solid-state hydrogen storage device has two modes: online hydrogenation and hydrogen exchange. The hydrogen elimination catalyst is connected to the exhaust gas discharge port of the hydrogen fuel cell. In this way, the powertrain integrates the power battery and the hydrogen fuel cell to form a hydrogen fuel cell range-extending architecture, thereby reducing the cost of the powertrain. And because the solid-state hydrogen storage device has a high hydrogen storage density per unit volume, and the solid-state hydrogen storage device is a flat type like the battery pack (even an irregular special-shaped structure), thereby reducing the occupation of the vehicle's internal space and increasing the internal available space of the vehicle with the powertrain of the present application. Since the internal pressure of the solid-state hydrogen storage device is low, the requirements of the solid-state hydrogen storage device on the pressure bearing capacity and airtightness are reduced, thereby reducing the cost of the hydrogen storage system and reducing the safety hazard of hydrogen leakage. By setting up a hydrogen removal catalyst, the exhaust gas emitted by the hydrogen fuel cell can be catalytically treated, which greatly reduces the hydrogen content in the exhaust gas emitted by the hydrogen fuel cell, eliminates the risk of hydrogen in the exhaust gas accumulating in a confined space and catching fire and exploding, and improves safety. Therefore, the technical solution of this application effectively solves the problem that the internal space of hydrogen fuel cell passenger cars on the market is occupied by a large amount of high-pressure hydrogen storage systems, the power system cost is high, the safety hazard is large, and the vehicle cannot enter the confined space of the underground garage.

[0021] In addition, the hydrogen fuel cell is electrically connected to the power battery and the drive motor through the high-voltage PDU. The powertrain integrates a large-capacity power battery with a low-power hydrogen fuel cell to form a hydrogen fuel cell range-extending architecture, further reducing the cost of the powertrain. When the solid-state hydrogen storage device uses the hydrogen exchange mode, hydrogen can be provided to the vehicle by replacing the entire solid-state hydrogen storage device. The replacement speed is fast and can reduce dependence on hydrogen refueling stations. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 A schematic diagram showing the connection of a cooling circuit, a gas circuit and an energy flow according to an embodiment of a power assembly of the present invention is shown;

[0024] Figure 2 Shows Figure 1 A schematic diagram of the connection between the cooling circuit and the gas circuit of the solid hydrogen storage device of the powertrain when using the hydrogen exchange mode;

[0025] Figure 3 Shows Figure 1 A schematic diagram of the connection between the cooling circuit and the gas circuit of the solid hydrogen storage device of the powertrain when the solid hydrogen storage device is in the online hydrogenation mode;

[0026] Figure 4 Shows Figure 1 A schematic diagram of the connection of the cooling circuit and the gas circuit of the solid hydrogen storage device of the powertrain that can use the online hydrogenation and hydrogen exchange modes;

[0027] Figure 5 Shows Figure 1 A schematic top view of a solid-state hydrogen storage device of a powertrain;

[0028] Figure 6 Shows Figure 1 A cross-sectional schematic diagram when a solid-state hydrogen storage module of a solid-state hydrogen storage device of a powertrain is a rectangular parallelepiped;

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

[0030] Figure 8 Shows Figure 7 A cross-sectional schematic diagram of a heat exchange pipeline disposed in a solid-state hydrogen storage module of a solid-state hydrogen storage device of a powertrain;

[0031] Fig. 9 Shows Figure 1 A schematic diagram of the three-dimensional structure of a heat exchange pipeline of a powertrain;

[0032] Fig.10 Shows Figure 1 A cross-sectional schematic diagram of a hydrogen removal catalyst of a powertrain;

[0033] Fig.11 Shows Figure 1 A schematic diagram of the three-dimensional structure of a hydrogen removal catalyst of a powertrain without showing the housing.

[0034] The above drawings include the following reference numerals:

[0035] 10. Hydrogen fuel cells;

[0036] 20. solid-state hydrogen storage device; 24. housing; 25. solid-state hydrogen storage module; 271. longitudinal ribs; 272. transverse ribs; 28. heat exchange pipeline; 29. ​​mounting lugs;

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

[0038] 44. fourth quick-connect connector; 45. fifth quick-connect connector;

[0039] 50. Hydrogen removal catalyst;

[0040] 61. Shell; 62. Package tank; 63. Carrier; 65. Connecting support; 651. Connecting flange; 652. Drainage channel;

[0041] 80. Low temperature cold start solid state hydrogen storage bottle. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments 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 "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0045] In order to achieve the above purpose, Figures 1 to 4As shown, the present 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 elimination catalyst 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 connected to the hydrogen inlet of the hydrogen fuel cell 10. The solid-state hydrogen storage device 20 has two modes of online hydrogenation and hydrogen exchange. The hydrogen elimination catalyst 50 is connected to the exhaust outlet of the hydrogen fuel cell 10.

[0046] In this way, the powertrain integrates the power battery and the hydrogen fuel cell 10 to form a hydrogen fuel cell range-extending architecture, thereby reducing the cost of the powertrain. And because the solid-state hydrogen storage device 20 has a high hydrogen storage density per unit volume, and the solid-state hydrogen storage device 20 is flat like the battery pack (even an irregular special-shaped structure), the occupation of the vehicle's internal space is reduced, and the internal available space of the vehicle with the powertrain of the present application is increased. Since the internal pressure of the solid-state hydrogen storage device 20 is 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 reducing the safety hazard of hydrogen leakage. Through the setting of the hydrogen elimination catalyst 50, the exhaust gas discharged by the hydrogen fuel cell 10 can be catalytically treated, the hydrogen content in the exhaust gas discharged by the hydrogen fuel cell 10 is greatly reduced, and the risk of hydrogen in the exhaust gas gathering in a confined space, catching fire and exploding is eliminated, thereby improving safety. Therefore, the technical solution of this embodiment effectively solves the problem that the internal space of hydrogen fuel cell passenger cars on the market is occupied by a large amount of high-pressure hydrogen storage systems, the power system cost is high, the safety hazard is large, and the vehicle cannot enter the confined space of the underground garage.

[0047] In addition, the hydrogen fuel cell is electrically connected to the power battery and the drive motor through the high-voltage PDU. The powertrain integrates a large-capacity power battery with a low-power hydrogen fuel cell to form a hydrogen fuel cell range-extending architecture, further reducing the cost of the powertrain. When the solid-state hydrogen storage device 20 uses the hydrogen exchange mode, hydrogen can be provided to the vehicle by replacing the entire solid-state hydrogen storage device 20. The replacement speed is fast, which can reduce the dependence on hydrogen refueling stations.

[0048] In this embodiment, when the solid-state hydrogen storage device 20 uses the online hydrogenation mode, hydrogen can be added to the solid-state hydrogen storage device 20. When the solid-state hydrogen storage device 20 uses the hydrogen exchange 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 distribution and management of energy. Under different driving conditions, the system can flexibly switch the energy source between the power battery and the hydrogen fuel cell 10 as needed, 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 distances and rapid acceleration, and improves the overall performance and economy of the vehicle.

[0049] Furthermore, the rated power of the hydrogen fuel cell 10 is greater than or equal to 10kW and less than or equal to 50kW, and the capacity of the power battery is greater than or equal to 10kWh and less than or equal to 40kWh. In this way, the capacity of the power battery is large, and it can be used as an energy storage system for daily short-distance commuting and rapid acceleration and deceleration of the whole vehicle. The rated power of the hydrogen fuel cell 10 is small, and the hydrogen fuel cell 10 is used as a range extender for the vehicle to provide power for long-distance driving of the vehicle. According to the energy management strategy of the whole vehicle, the above two forms of power supply can be flexibly called. The parameter setting of the hydrogen fuel cell 10 and the power battery not only meets the power demand during daily commuting and rapid acceleration, but also ensures the energy supply during high-speed long-distance driving, so that the hydrogen fuel cell 10 extended-range hybrid vehicle using the powertrain in this embodiment can adapt to a wider range of usage scenarios. In addition, the use of the hydrogen fuel cell 10 as a range extender reduces the cost of the vehicle and facilitates popularization.

[0050] In this embodiment, when the vehicle has high power requirements such as overtaking or climbing, 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 range commonly used by A0, A, A+, B, 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 not less than 100km, and is also used to provide power during rapid acceleration and energy recovery 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. Alternatively, the capacity of the power battery is greater than or equal to 10 kWh and less than or equal to 40 kWh.

[0052] like 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 issues, 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, the solid-state hydrogen storage device 20 also includes a low-temperature cold start solid-state hydrogen storage bottle 80 on the outside. The low-temperature cold start solid-state hydrogen storage bottle 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 bottle 80 is less than or equal to 100 grams. The low-temperature cold start solid-state hydrogen storage bottle 80 is only used for the hydrogen supply of the hydrogen fuel cell 10 during the low-temperature cold start when the ambient temperature is below zero degrees; the hydrogen fuel cell 10 is supplied with hydrogen by the solid-state hydrogen storage device 20 after the low-temperature cold start; the low-temperature cold start solid-state hydrogen storage bottle 80 is provided with an electric heating film on the outside, and the electric heating film is powered by a power battery. The setting of the low-temperature cold start solid-state hydrogen storage bottle 80 can provide heat and generate hydrogen to the hydrogen fuel cell 10 through the electric heating film when the temperature is low. After the hydrogen fuel cell 10 is started, it can discharge a relatively high temperature coolant (hot water) to be transported to the solid-state hydrogen storage device 20, so that the solid-state hydrogen storage device 20 can absorb heat and release hydrogen to be transported to the hydrogen fuel cell 10. In this embodiment, when the temperature before the vehicle is started is greater than or equal to the preset temperature, the hydrogen storage alloy material can absorb the heat of the coolant discharged from 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 the vehicle is started 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 bottle 80 to release hydrogen.

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

[0057] like Figures 5 to 11 As shown, the dehydrogenation catalyst 50 includes a housing 61, a carrier 63 disposed in the housing 61, and a dehydrogenation 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 dehydrogenation catalyst 50 can catalyze the hydrogen discharged from the tail gas to generate water when the hydrogen fuel cell 10 is shut down for purging, which solves the safety problem of vehicles currently on the market when they are parked in confined spaces such as underground garages. The dehydrogenation catalyst 50 catalytically converts the hydrogen and oxygen in the tail gas into water, and the dehydrogenation catalyst 50 effectively avoids the risk of combustion and explosion caused by hydrogen accumulation, improves the safety of the vehicle, and provides protection 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 spherical specific surface area is relatively large, which increases the reaction area of ​​the carrier 63 and improves the catalytic efficiency.

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

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

[0060] like Figures 5 to 11 As shown, the hydrogen removal catalyst 50 includes a shell 61, a packaged tank body 62 disposed in the shell 61, a connection support 65 connecting the shell 61 and the packaged tank body 62, a carrier 63 filled in the packaged tank body 62, and a hydrogen removal catalyst coated on the carrier 63, the packaged tank body 62 is arranged in one or more intervals; the packaged tank body 62 is a cylinder; or, the connection support 65 includes a connection flange 651 and a drainage channel 652, the connection flange 651 connects a plurality of packaged tank bodies 62, and the drainage channel 652 is arranged between the connection flange 651 and the shell 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 a plurality of 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, thereby reducing the accumulation of water in the packaged tank body 62.

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

[0062] In other embodiments, when the packaging can is designed as a rectangular parallelepiped, a special structure is required to offset the unevenly distributed gas pressure on the square cross-section. In other embodiments, reinforcing ribs are provided on the outside of the rectangular parallelepiped to improve the deformation resistance and structural stability of the rectangular parallelepiped (such as support ribs or reinforcing ribs provided on the outside of the rectangular parallelepiped).

[0063] In this embodiment, the drainage channel 652 is located below the packaging tank body 62 to facilitate the discharge of water. The hydrogen removal catalyst 50 has an exhaust gas inlet and an exhaust gas outlet. The hydrogen removal catalyst 50 is tilted or vertically arranged so that the exhaust gas inlet is higher than the exhaust gas outlet, which is convenient for the rapid discharge of water in the drainage channel 652 and reduces the retention and accumulation of liquid water. The material of the packaging tank body 62 is preferably stainless steel or aluminum alloy.

[0064] like Figures 5 to 11As shown, the solid-state hydrogen storage device 20 includes a housing 24, a solid-state hydrogen storage module 25 disposed in the housing 24, and a hydrogen storage alloy material filled in the solid-state hydrogen storage module 25, and 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 heat absorption in 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 perform hydrogen absorption and desorption reactions at the optimal working 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 also includes a quick release channel, a hydrogen flowmeter, a multifunctional bottle mouth combination valve, a one-way valve and a pressure reducer. The quick release channel is connected to the solid-state hydrogen storage module 25. When the pressure in the solid-state hydrogen storage module 25 is higher than the preset pressure value, the quick release channel is opened to discharge part of the hydrogen in the solid-state hydrogen storage module 25. The hydrogen flowmeter is arranged at the hydrogenation port of the solid-state hydrogen storage module 25 to detect the amount of hydrogenation during online hydrogenation. The multifunctional bottle mouth combination valve is arranged at the gas outlet of the solid-state hydrogen storage module 25 to detect the amount of hydrogen used in the solid-state hydrogen storage module 25. The multifunctional bottle mouth combination valve is a multifunctional combination valve with a switch function, a cut-off function, a one-way valve function and a pressure relief device. When the multifunctional bottle mouth combination valve detects a high temperature, the pressure relief device controls the quick release channel to open to discharge part of the hydrogen in the solid-state hydrogen storage module 25. The one-way valve is arranged between the hydrogen inlet and the solid-state hydrogen storage device 20 to control the flow direction of the hydrogen. The pressure reducer is located between the multifunctional bottle mouth combination valve and the hydrogen fuel cell 10.

[0066] like Figures 5 to 11As shown, there are multiple solid-state hydrogen storage modules 25 and they are arranged at intervals. The solid-state hydrogen storage device 20 also includes a longitudinal rib 271 connected between the shell 24 and the solid-state hydrogen storage module 25 and a transverse rib 272 connected between two adjacent solid-state hydrogen storage modules 25. The longitudinal rib 271 and the transverse rib 272 serve as heat exchange fins to increase the heat exchange area. Both the longitudinal rib 271 and the transverse rib 272 can increase the heat dissipation area of ​​the solid-state hydrogen storage module 25. And both the longitudinal rib 271 and the transverse rib 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 will change when the solid-state hydrogen storage device 20 is charged and discharged, the arrangement of the longitudinal rib 271 and the transverse rib 272 can support the shell wall 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 internal pressure. In this embodiment, the longitudinal ribs 271 and the transverse ribs 272 are both located in the heat exchange medium flow channel, and the longitudinal ribs 271 and the transverse ribs 272 are both 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, thereby improving the heat dissipation efficiency of the solid-state hydrogen storage device 20, ensuring that the hydrogen storage alloy material absorbs and desorbs hydrogen at the optimal working temperature, and enhancing the stability and service life of the solid-state hydrogen storage device 20.

[0067] like Figures 5 to 11 As shown, the solid-state hydrogen storage module 25 is in the shape of a cuboid or a cylinder. The structure of the solid-state hydrogen storage module 25 is simple and compact, which reduces the space occupied. In this embodiment, the solid-state hydrogen storage device 20 also includes a mounting lug 29 disposed on the housing 24, and the solid-state hydrogen storage device 20 forms a rectangle on the horizontal plane, and the mounting lug 29 is 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 lug 29 is used to connect to the chassis of the vehicle to facilitate the installation of the solid-state hydrogen storage device 20.

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

[0069] In this embodiment, the solid-state hydrogen storage device 20 is a flat rectangular parallelepiped, which 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] like Figures 5 to 11As shown, the solid-state hydrogen storage module 25 is in the shape of a cuboid, the cuboid having a first plane and a second plane connected to the first plane at an angle, the longitudinal ribs 271 are connected between the first plane and the 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 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, thereby improving the volume utilization of the solid-state hydrogen storage device 20.

[0071] like Figures 5 to 11 As shown, 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, the heat exchange medium is filled on the outside of the encapsulation tank body 62, and the heat of the heat exchange medium is transferred to the hydrogen storage alloy material through the encapsulation tank body 62; when the internal cooling 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 to the hydrogen storage alloy material through the built-in heat exchange pipeline. The setting of the external cooling heat exchange mode and the internal cooling heat exchange mode makes 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 a serpentine or other more complex shape with more efficient heat transfer. The heat exchange pipeline 28 is arranged in a tortuous manner in the solid hydrogen storage module 25 in a three-dimensional space to form a plurality of serpentine heat exchange tube groups on a plurality of parallel surfaces. The heat exchange pipeline 28 includes a plurality of heat exchange pipe sections that are connected and spaced apart, and at least part of the hydrogen storage alloy material is located between two adjacent heat exchange pipe sections.

[0073] like Figure 1As shown, 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 the electrically controlled three-way proportional valve. 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 electrically controlled three-way proportional valve can connect the hydrogen fuel cell 10 with the solid-state hydrogen storage device 20, and the electrically controlled three-way proportional valve can also connect the hydrogen fuel cell 10 with the main radiator. The coolant with a higher temperature in the hydrogen fuel cell 10 can be transported to the main radiator for cooling. In this way, the electrically controlled three-way proportional valve can distribute the coolant with a higher temperature in the hydrogen fuel cell 10 so that the coolant with a higher temperature 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 releases hydrogen and absorbs heat, it can absorb heat and cool the coolant with a higher temperature in the hydrogen fuel cell 10, so that the heat dissipation power of the main radiator can be reduced, reducing the volume and use cost of the main radiator.

[0074] In the present 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 with the hydrogen elimination catalyst, or the electronically controlled three-way valve can connect the exhaust gas outlet of the hydrogen fuel cell 10 with the muffler. In this way, when the vehicle is traveling on an open road, the electronically controlled three-way valve connects the exhaust gas outlet of the hydrogen fuel cell 10 with the muffler so that the muffler can perform muffler. When the vehicle is in a confined space such as a basement, the electronically controlled three-way valve connects the exhaust gas outlet of the hydrogen fuel cell 10 with the hydrogen elimination catalyst so that the hydrogen elimination catalyst can catalytically convert hydrogen and oxygen in the exhaust gas into water.

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

[0076] In this embodiment, the solid hydrogen storage device 20 has a heat exchange liquid inlet, and the powertrain also includes a heating pipeline 31 connected between the heat exchange liquid inlet and the coolant outlet, and the electric three-way proportional valve is arranged on the heating pipeline 31. The powertrain also includes a deionizer. The deionizer is connected to the coolant inlet of the hydrogen fuel cell 10, and the main radiator and the cooling pipe 32 are both 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-connect connector and a second quick-connect connector connected to the heat exchange medium flow channel are provided on the housing 24. The first quick-connect connector can connect or disconnect the heating pipeline 31. The second quick-connect connector can connect or disconnect the cooling pipe 32. In this way, when the solid-state hydrogen storage device 20 uses the hydrogen exchange mode, the heating pipeline 31 and the cooling pipe 32 can be quickly and conveniently controlled to be connected and disconnected, which is convenient for replacing the operation of the solid-state hydrogen storage device 20. The powertrain also includes a third quick-connect connector provided on the second end of the hydrogen transmission pipeline 30 or 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, so as to facilitate the rapid replacement of the solid-state hydrogen storage device 20. The third quick-connect connector is a hydrogen gas path quick-connect connector.

[0078] Furthermore, a coolant quick-connect connector is provided on the solid-state hydrogen storage device 20. When the solid-state hydrogen storage device 20 uses the online hydrogenation mode, the solid-state hydrogen storage device 20 releases heat, connects the external chiller to the coolant quick-connect connector, and takes away the heat generated by the hydrogen absorption reaction of the hydrogen storage alloy material in the solid-state hydrogen storage device 20 through the ice water in the external chiller. The provision of the coolant quick-connect connector makes the connection between the solid-state hydrogen storage device 20 and the external chiller more convenient and quick, and facilitates the heat exchange operation of the solid-state hydrogen storage device 20. In this embodiment, the coolant quick-connect connector includes a fourth quick-connect connector 44 and a fifth quick-connect connector 45 provided 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-connect connector 44, and then the hot water flows back to the external chiller through the fifth quick-connect connector 45.

[0079] In this embodiment, the power assembly further includes a sixth quick-connect connector connected to the hydrogen inlet, so that an external hydrogenation machine can be connected to the sixth quick-connect connector to realize online hydrogenation, which is convenient and quick.

[0080] The present application also provides a vehicle, which includes a 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 integrated on the chassis, thereby reducing the occupation of the passenger space and the trunk space.

[0082] In this embodiment, the vehicle is a hydrogen fuel cell range-extended hybrid passenger car using low-pressure room-temperature solid hydrogen storage materials. Figure 5 As shown, the solid-state hydrogen storage device 20 is a rectangular parallelepiped, and the solid-state hydrogen storage device 20 is arranged at intervals or adjacent to the power battery of the powertrain on the chassis, and the upper surface of the solid-state hydrogen storage device 20 is flush with the lower surface of the power battery. The flush arrangement of the solid-state hydrogen storage device 20 and the power battery not only reduces the space occupied by the powertrain, but also optimizes the layout so that the solid-state hydrogen storage device 20 and the power battery can share the chassis space, reducing the encroachment on the passenger space and luggage storage space. In addition, the solid-state hydrogen storage device 20 does not occupy the vehicle's passenger space and trunk space, 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 is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

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

[0085] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0086] The above description is only a preferred embodiment of the present invention and is 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 in the protection scope of the present invention.

Claims

1. A powertrain, characterized in that: include: A power battery, wherein the capacity of the power battery is greater than or equal to 10 kWh and less than or equal to 40 kWh; A drive motor, wherein the power battery can supply 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) is connected to the hydrogen inlet of the hydrogen fuel cell (10); the solid-state hydrogen storage device (20) has two modes: online hydrogenation and hydrogen exchange; the solid-state hydrogen storage device (20) is a flat rectangular parallelepiped; the solid-state hydrogen storage device (20) is integrated with the chassis; the solid-state hydrogen storage device (20) does not exceed the frame in the height direction to avoid passenger space and trunk space; The hydrogen elimination catalyst (50) is in communication with the tail gas discharge port of the hydrogen fuel cell (10); the solid-state hydrogen storage device (20) comprises 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 0.5 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.

2. The powertrain according to claim 1, characterized in that: The solid-state hydrogen storage device (20) further comprises a low-temperature cold start solid-state hydrogen storage bottle (80) on the outside, the low-temperature cold start solid-state hydrogen storage bottle (80) being connected to the hydrogen inlet of the hydrogen fuel cell (10) via a bottle mouth combination valve, the hydrogen capacity of the low-temperature cold start solid-state hydrogen storage bottle (80) being less than or equal to 100 grams, and the low-temperature cold start solid-state hydrogen storage bottle (80) being only used for hydrogen supply during low-temperature cold start of the hydrogen fuel cell (10) when the ambient temperature is below zero degrees; the hydrogen fuel cell (10) is supplied with hydrogen by the solid-state hydrogen storage device (20) after the low-temperature cold start; and an electric heating film is arranged on the outside of the low-temperature cold start solid-state hydrogen storage bottle (80), the electric heating film being powered by the power battery.

3. The powertrain according to claim 1, characterized in that: The hydrogen removal catalyst (50) comprises a shell (61), a carrier (63) arranged in the shell (61), and a hydrogen removal catalyst coated on the carrier (63); The carrier (63) is spherical in shape; and / or, The material of the carrier (63) is a porous material.

4. The powertrain according to claim 1, characterized in that: The hydrogen removal catalyst (50) comprises a shell (61), a packaging tank (62) arranged in the shell (61), a connecting support (65) connecting the shell (61) and the packaging tank (62), a carrier (63) filled in the packaging tank (62), and a hydrogen removal catalyst coated on the carrier (63), wherein the packaging tank (62) is arranged in one or more intervals; The packaging can (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, characterized in that: 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 packaging tank body (62), and the heat of the heat exchange medium is transferred to the hydrogen storage alloy material through the packaging tank body (62); 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 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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