Fuel cell system and vehicle

Abstract

A kind of fuel cell system and vehicle, fuel cell system includes electric pile assembly and electric control assembly, electric pile assembly includes buffer at top, buffer is elastic member and has connecting slot;Electric control assembly includes reinforcing rib at bottom, electric control assembly is set at the top of electric pile assembly, reinforcing rib extends into connecting slot and is in elastic abutment with buffer.The fuel cell system in the utility model can prevent electric control assembly from deforming, also can limit electric pile assembly and electric control assembly, avoid the deviation of both in the process of vehicle driving vibration.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell system technology, specifically to a fuel cell system and a vehicle. Background Technology

[0002] Fuel cell systems, as a high-efficiency, high-power-density, and pollution-free power generation system, are widely used in the field of new energy vehicles. A fuel cell system mainly consists of components such as a fuel cell stack, a DC-to-DC converter (DCDC), an air compressor controller, and a hydrogen circulation pump controller. The entire system maintains the control of hydrogen, air, water, heat, and electricity, enabling the fuel cell system to operate stably.

[0003] In existing fuel cell systems, the electronic control unit integrates multiple electronic control devices, and its bottom is prone to deformation, and the stack assembly and electronic control unit are prone to displacement. Utility Model Content

[0004] The purpose of this invention is to provide a fuel cell system and vehicle that solves the problems of easy deformation of the electronic control components and easy displacement between the fuel cell stack and the electronic control components.

[0005] To achieve the objectives of this utility model, the following technical solution is provided:

[0006] In a first aspect, the present invention provides a fuel cell system, including a fuel cell stack assembly and an electronic control assembly. The fuel cell stack assembly includes a buffer member located at the top, the buffer member being an elastic member and having a connecting groove. The electronic control assembly includes a reinforcing rib located at the bottom, the electronic control assembly being disposed at the top of the fuel cell stack assembly, the reinforcing rib extending into the connecting groove and elastically abutting against the buffer member.

[0007] In one embodiment, the fuel cell stack assembly further includes a housing and a fuel cell stack, the fuel cell stack being disposed within the housing, and the buffer being disposed on top of the fuel cell stack; the electronic control assembly further includes a cover and a heat sink, the cover being connected to the housing, the heat sink being disposed on the cover, the reinforcing ribs protruding from the surface of the heat sink, and the heat sink being used to flow a cooling medium for heat dissipation.

[0008] In one embodiment, the reinforcing rib includes a first side and a second side disposed opposite to each other, the first side and / or the second side being connected to the inner wall of the connecting groove, and the first side and the second side having an included angle α that satisfies: 60°≤α≤150°.

[0009] In one embodiment, one of the reinforcing rib and the buffer is provided with a positioning part, and the other is provided with a positioning hole. The positioning part and the positioning hole are connected to each other to position the cover and the fuel cell stack.

[0010] In one embodiment, the heat dissipation component includes a cover plate and a water channel structure. The cover plate is connected to the cover body and encloses a heat dissipation space. The reinforcing rib is disposed on the surface of the cover plate facing the fuel cell stack, and the water channel structure is disposed on the surface of the cover plate facing away from the reinforcing rib.

[0011] In one embodiment, the electronic control component further includes a DC-DC converter and an air compressor controller module, both of which are housed in the heat dissipation space and are thermally conductively connected to the heat sink. The DC-DC converter is electrically connected to the fuel cell stack.

[0012] In one embodiment, the fuel cell stack further has a connection terminal that extends into the heat dissipation space and is electrically connected to the DC-DC converter.

[0013] In one embodiment, the fuel cell system further includes a sealing module, through which the housing and the cover are elastically abutted.

[0014] In one embodiment, the sealing module includes a first sealing element and a second sealing element. The side wall of the housing and the side wall of the cover are elastically abutted together by the first sealing element, and the surface of the housing facing the cover and the surface of the cover facing the housing are elastically abutted together by the second sealing element.

[0015] In a second aspect, the present invention also provides a vehicle including electrical components and a fuel cell system as described in any one of the various embodiments of the first aspect, the fuel cell system being used to supply power to the electrical components.

[0016] By setting up a fuel cell stack assembly and an electronic control assembly, the reinforcing ribs of the electronic control assembly extend into the connecting groove of the buffer component of the fuel cell stack assembly. While strengthening the structural strength of the electronic control assembly, the reinforcing ribs can also elastically abut against the buffer component, further providing clamping force to the electronic control assembly to prevent deformation. They can also limit the movement of the fuel cell stack assembly and the electronic control assembly to prevent them from shifting during vehicle vibration. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a fuel cell system according to one embodiment;

[0019] Figure 2 An exploded view of a fuel cell system according to one embodiment;

[0020] Figure 3 This is an exploded view of a portion of the structure of a fuel cell system according to one embodiment.

[0021] Figure 4 This is a partial cross-sectional view of a fuel cell system according to one embodiment;

[0022] Figure 5 This is a perspective view of a partial structure of an electronic control component according to one embodiment.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100 - Fuel Cell System;

[0025] 10-Fuel stack assembly, 11-Fuel stack, 111-Connecting terminal, 12-Buffer, 121-Connecting slot, 122-Positioning hole, 13-Enclosure;

[0026] 20-Electrical control components, 21-DC-CDC converter, 22-Reinforcing rib, 221-First side, 222-Second side, 223-Positioning part, 23-Cover, 231-Heat dissipation space, 24-Heat dissipation component, 241-Cover plate, 242-Water channel structure, 243-Flow channel, 25-Water nozzle, 26-Air compressor controller module, 271-DC-CDC output interface, 272-Air compressor controller output interface, 273-PTC connector, 274-Exhaust port, 275-Low-pressure signal connector;

[0027] 31 - First seal, 32 - Second seal;

[0028] α - included angle. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0031] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0032] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] Please refer to Figures 1 to 5 The present invention provides a vehicle, including electrical components and a fuel cell system 100 in the embodiments of the present invention, wherein the fuel cell system 100 is used to supply power to the electrical components.

[0034] The vehicle may be an electric vehicle or a hybrid electric vehicle. The electrical components include, but are not limited to, headlights, instrument panels, air conditioning, and audio systems.

[0035] Optionally, the fuel cell system 100 can output direct current to power the electrical devices.

[0036] Optionally, the fuel cell system 100 can be used as an on-board power source. Besides vehicles, the fuel cell system 100 in this embodiment can also be used in base stations, household electrical loads, etc., without limitation.

[0037] The fuel cell system 100 can be a hydrogen fuel cell system 100, which generates electricity through the chemical reaction of hydrogen and oxygen, and has advantages such as zero emissions, high energy density, and rapid refueling. In other embodiments, the fuel cell system 100 can also be a proton exchange membrane fuel cell (PEMFC), an alkaline fuel cell (AFC), a phosphoric acid fuel cell (PAFC), a molten carbonate fuel cell (MCFC), a solid oxide fuel cell (SOFC), etc., and there is no specific limitation.

[0038] Optionally, the fuel cell system 100 in this embodiment integrates a fuel cell stack 11 and an electronic control component 20. The electronic control component 20 includes a DC-DC converter 21, which is electrically connected to the fuel cell stack 11 and draws power from it. Specifically, the DC-DC converter 21 can convert a first DC current into a second DC current, wherein the voltage value of the second DC current can be greater than or less than the voltage value of the first DC current. The DC-DC converter 21 can output the second DC current to power the electrical devices.

[0039] Optionally, the DC-DC converter 21 can be a boost module or a buck module. The DC-DC converter 21 can receive a first voltage signal and output a second voltage signal. When the DC-DC converter 21 is a boost module, the voltage value of the second voltage signal is greater than the voltage value of the first voltage signal; when the DC-DC converter 21 is a buck module, the voltage value of the second voltage signal is less than the voltage value of the first voltage signal. It is understood that in other embodiments, the DC-DC converter 21 may also include both a boost module and a buck module, and this invention does not limit this.

[0040] The vehicle in this embodiment of the present invention is equipped with a fuel cell system 100, which supplies power to electrical devices. The fuel cell system 100 has a high degree of integration and can effectively improve the utilization rate of the vehicle's internal space.

[0041] The fuel cell system 100 in the embodiments of this utility model will be described in detail below.

[0042] Please refer to Figures 1 to 5 This utility model provides a fuel cell system 100, including a fuel cell stack assembly 10 and an electronic control assembly 20.

[0043] The fuel cell assembly 10 includes a top-mounted buffer 12, which is an elastic member and has a connection groove 121.

[0044] In one implementation, such as Figure 2 and Figure 4As shown, the fuel cell stack assembly 10 also includes a housing 13 and a fuel cell stack 11, with the fuel cell stack 11 disposed inside the housing 13 and a buffer 12 disposed on top of the fuel cell stack 11.

[0045] The fuel cell stack 11 provides electrical energy to the fuel cell system 100. When the stack 11 is operating, hydrogen gas decomposes into protons (H+) and electrons (e-) at the anode. The protons pass through the proton exchange membrane to the cathode, while the electrons flow through the external circuit to generate electrical energy. Oxygen combines with protons at the cathode to form water. Optionally, the stack 11 can be single or multiple. When multiple stacks 11 are used, they can be connected in series to increase the overall voltage.

[0046] Optionally, the fuel cell stack 11 and the housing 13 can be connected and fixed by welding, bonding, snap-fitting, screwing, riveting, or other methods.

[0047] The material of the buffer component 12 can be rubber, polyurethane (PU), polyethylene (PE), thermoplastic elastomer (TPE), or any material feasible in the art for making elastic components, without limitation. The buffer component 12 and the housing 13 can be connected and fixed by means of adhesive, snap-fit, screw, etc.

[0048] The electronic control assembly 20 includes a reinforcing rib 22 located at the bottom. The electronic control assembly 20 is disposed on the top of the fuel cell assembly 10. The reinforcing rib 22 extends into the connecting groove 121 and elastically abuts against the buffer member 12.

[0049] In one embodiment, such as Figure 2 and Figure 4 As shown, the electronic control component 20 also includes a cover 23, which covers the housing 13. Both the cover 23 and the housing 13 can be made of materials with high structural strength, specifically metals, high-strength plastics, ceramics, etc. Metals include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys. Both the cover 23 and the housing 13 can be a one-piece structure, meaning they are both manufactured using a single molding process, such as stamping or casting, without limitation. Alternatively, the cover 23 or the housing 13 can be a separate structure, with the parts of the cover 23 or the housing 13 connected and fixed by welding, bonding, snap-fitting, screwing, or other methods.

[0050] Understandably, when the fuel cell system 100 is placed on a horizontal surface, the cover 23 is located on the side of the housing 13 away from the horizontal surface, that is, the cover 23 is located above the housing 13 in the direction of gravity.

[0051] The reinforcing rib 22 is used to enhance the structural strength of the electronic control component 20. The reinforcing rib 22 can be made of materials with high structural strength, such as metal materials, high-strength plastics, ceramics, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc.

[0052] The shape of the reinforcing rib 22 corresponds to the shape of the inner wall of the connecting groove 121. Optionally, the orthographic projection of the reinforcing rib 22 on the buffer member 12 falls into or approximately falls within the range of the buffer member 12. When the fuel cell system 100 is placed horizontally, the reinforcing rib 22 and the buffer member 12 can just contact or elastically abut against each other, or there can be a certain gap, without limitation.

[0053] In one embodiment, such as Figure 3 and Figure 4 As shown, the electronic control component 20 also includes a heat sink 24, which is disposed on the cover 23. The reinforcing ribs 22 protrude from the surface of the heat sink 24. The heat sink 24 is used to flow a cooling medium for heat dissipation.

[0054] The heat sink 24 and the cover 23 can be an integral structure or a separate structure, without limitation. Optionally, the heat sink 24 can be any one or a combination of planar water channels, three-dimensional water channels, and flow channel 243 plates. The heat sink 24 can also adopt any other feasible structure, without specific limitations.

[0055] Optionally, the heat sink 24 and the reinforcing rib 22 can be an integral structure or a separate structure. The reinforcing rib 22 and the heat sink 24 are connected by welding, bonding, snap-fitting, screwing, etc., without restriction.

[0056] By providing a buffer 12 at the top of the fuel cell stack 11 and a reinforcing rib 22 protruding from the surface of the heat sink 24, the reinforcing rib 22 can increase the structural strength of the heat sink 24. Furthermore, the elastic contact between the reinforcing rib 22 and the buffer 12 provides elastic clamping force to the heat sink 24, further resisting deformation. In addition, the buffer 12 at the top of the fuel cell stack 11, since the fuel cell stack 11 includes multiple relatively heavy membrane electrode assemblies, allows the buffer 12 and the elastic force between the buffer 12 and the reinforcing rib 22 to elastically limit the movement of the fuel cell stack 11, preventing vibrations during vehicle operation from affecting the internal sealing effect of the fuel cell stack 11.

[0057] The fuel cell system 100 in this embodiment of the present invention includes a fuel cell stack assembly 10 and an electronic control assembly 20. The reinforcing ribs 22 of the electronic control assembly 20 extend into the connecting grooves 121 of the buffer member 12 of the fuel cell stack assembly 10. While strengthening the structural strength of the electronic control assembly 20, the reinforcing ribs 22 can also elastically abut against the buffer member 12, further providing a clamping force to the electronic control assembly 20 to prevent deformation of the electronic control assembly 20. They can also limit the movement of the fuel cell stack assembly 10 and the electronic control assembly 20 to prevent them from shifting during vehicle vibration.

[0058] In one implementation, such as Figure 4As shown, the reinforcing rib 22 includes a first side 221 and a second side 222 disposed opposite to each other. The first side 221 and / or the second side 222 are connected to the inner wall of the connecting groove 121. The first side 221 and the second side 222 have an included angle α, which satisfies: 60°≤α≤150°.

[0059] Optionally, the cross-sectional shape of the reinforcing rib 22 can be approximately "V", "W", "U", trapezoidal, etc., without restriction.

[0060] Optionally, the first side 221 and the second side 222 are arranged opposite to each other, and the distance between the first side 221 and the second side 222 gradually decreases from the end where the reinforcing rib 22 is connected to the heat sink 24 to the end of the reinforcing rib 22 away from the heat sink 24, that is, the size of the end where the reinforcing rib 22 is connected to the heat sink 24 is larger than the size of the end of the reinforcing rib 22 away from the heat sink 24. With this arrangement, the first side 221 and the second side 222 face the buffer member 12, which facilitates the provision of a rebound force to the heat sink 24 in the direction from the cover 23 to the housing 13 (that is, the vertical direction of the fuel cell system 100, which can be the direction of gravity when the fuel cell system 100 is placed flat on the bottom surface) to resist the deformation of the heat sink 24.

[0061] In one specific embodiment, the cross-sectional shape of the reinforcing rib 22 is approximately "V" shaped. The included angle α between the first side surface 221 and the second side surface 222 is set to satisfy 60°≤α≤150°. The buffer 12 can provide clamping force to the electronic control assembly 20 through elastic contact with the reinforcing rib 22, preventing deformation of the electronic control structure and minimizing displacement between the reinforcing rib 22 and the buffer rib 12. When the included angle α is too large, the contact surface between the buffer rib 12 and the reinforcing rib 22 is too gentle, and relative displacement may easily occur, potentially leading to misalignment between the fuel cell assembly 10 and the electronic control assembly 20. When the included angle α is too small, the reinforcing rib 22 is too sharp, and the connection between the first side surface 221 and the second side surface 222 punctures the buffer rib 12. Furthermore, in the direction from the cover 23 to the housing 13, there is insufficient contact area between the reinforcing rib 22 and the buffer rib 12, making it impossible to provide sufficient clamping force to the electronic control assembly 20. Optionally, the included angle α can be 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 145°, 150°, or 160°.

[0062] In one embodiment, one of the reinforcing rib 22 and the buffer member 12 is provided with a positioning part 223, and the other is provided with a positioning hole 122. The positioning part 223 and the positioning hole 122 are connected to each other to position the cover 23 and the fuel cell stack 11.

[0063] The shapes of the positioning hole 122 and the positioning part 223 are not specifically limited. Optionally, the positioning hole 122 can be circular, angular, triangular, regular polygonal, etc., and the shape of the positioning part 223 can correspond to the shape of the positioning hole 122.

[0064] Optional, such as Figure 2 and Figure 3 As shown, the buffer 12 is provided with a positioning hole 122, and the reinforcing rib 22 is provided with a positioning part 223; or, in another embodiment, the reinforcing rib 22 is provided with a positioning part 223, and the buffer 12 is provided with a positioning hole 122, without limitation.

[0065] When the reinforcing rib 22 elastically abuts against the buffer 12, the positioning part 223 extends into the positioning hole 122, which can provide accurate positioning for the connection between the reinforcing rib 22 and the buffer 12 and avoid misalignment.

[0066] In one implementation, such as Figure 3 and Figure 4 As shown, the heat sink 24 includes a cover plate 241 and a water channel structure 242. The cover plate 241 is connected to the cover body 23 and encloses a heat dissipation space 231. The reinforcing rib 22 is disposed on the surface of the cover plate 241 facing the fuel cell stack 11, and the water channel structure 242 is disposed on the surface of the cover plate 241 facing away from the reinforcing rib 22.

[0067] Optionally, the waterway structure 242 and the cover plate 241 can be an integral structure or a separate structure, without restriction.

[0068] Optionally, a flow channel 243 is enclosed between the cover plate 241 and the water channel structure 242. The flow channel 243 carries a cooling medium to dissipate heat from the electronic control devices (such as the DC-DC converter 21) housed in the heat dissipation space 231. The cooling medium includes, but is not limited to, water, oil, alcohol, gas, or other media with cooling properties.

[0069] When the water pressure of the cooling medium in the water channel structure 242 is too high, it may cause the cover plate 241 to deform. By setting the reinforcing ribs 22 on the surface of the cover plate 241 facing away from the water channel structure 242, the structural strength of the cover plate 241 can be strengthened, and the deformation of the cover plate 241 can be avoided, which may lead to leakage of the cooling medium.

[0070] In one embodiment, such as Figure 2 and Figure 5 As shown, a water nozzle 25 is also connected to the side wall of the cover 23, and the water nozzle 25 is connected to the heat sink 24.

[0071] Optionally, the water nozzle 25 and the heat sink 24 can be an integral structure, that is, the side wall of the cover 23 protrudes to form the water nozzle 25. Alternatively, the water nozzle 25 can also be a structure similar to a pipe connector, and can be connected and fixed to the heat sink 24 by welding, bonding, snap-fitting, screwing, etc., without limitation.

[0072] The water nozzle 25 is used to deliver the cooling medium. Optionally, the number of water nozzles 25 can be one or two. When there is one water nozzle 25, the water nozzle 25 has two through holes spaced apart, one through hole for the cooling medium to flow into the heat sink 24, and the other through hole for the cooling medium to flow out of the heat sink 24; the water nozzle 25 can also be two, with the two water nozzles 25 spaced apart, each water nozzle 25 having one through hole, one water nozzle 25 for the cooling medium to flow into the heat sink 24, and the other water nozzle 25 for the cooling medium to flow out of the heat sink 24. The shape and number of water nozzles 25 can also be any other feasible manner, without limitation.

[0073] By setting the water nozzle 25, the cooling medium in the heat sink 24 flows in and / or flows out through the water nozzle 25, realizing the flow heat exchange of the cooling medium, which has high heat exchange efficiency.

[0074] In one implementation, such as Figure 5 As shown, the electronic control assembly 20 also includes a DC-DC converter 21 and an air compressor controller module 26. Both the DC-DC converter 21 and the air compressor controller module 26 are housed in the heat dissipation space 231 and mounted on the cover 23. The DC-DC converter 21 is electrically connected to the fuel cell stack 11.

[0075] The DC-DC converter 21 is housed in the heat dissipation space 231 and mounted on the cover 23. The DC-DC converter 21 takes a DC input voltage as its input and outputs a different DC voltage. The output DC voltage can be higher or lower than the input DC voltage without limitation. The DC-DC converter 21 is generally composed of functional components such as a control chip, inductor coil, diode, transistor, and capacitor.

[0076] Optionally, the DC-DC converter 21 is connected and fixed to the cover 23. The connection method can be welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., without limitation.

[0077] The air compressor controller module 26 provides high-pressure, high-flow-rate air (oxygen) to the fuel cell stack 11 to support the electrochemical reaction. The hydrogen pump control module enables the recycling of unreacted hydrogen, improving hydrogen utilization. Optionally, the high-voltage power distribution module is responsible for distributing electrical energy to various electrical devices, while also providing protection, monitoring, and management functions. In this embodiment, the input DC power is boosted by the DC-DC converter 21 and then processed and output by the high-voltage power distribution module.

[0078] Optionally, the electrical control components 20 include a hydrogen pump control module (not shown) and a high-voltage power distribution unit (PDU) (not shown), and the air compressor controller module 26, the hydrogen pump control module, and the high-voltage power distribution module are electrically connected to the output of the DC-DC converter 21.

[0079] Optionally, the DC-DC converter 21, air compressor controller module 26, hydrogen pump control module, and high-voltage power distribution module are all mounted on the cover 23 and connected to the heat sink 24 in a heat-conducting manner. In some specific embodiments, the air compressor controller module 26, hydrogen pump control module, and high-voltage power distribution module can be connected and fixed to the cover 23 by welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., and there are no specific limitations.

[0080] By setting up the DC-DC converter 21 and the air compressor controller module 26, the stable operation of the fuel cell system 100 is ensured.

[0081] Optional, such as Figure 1 , Figure 2 and Figure 5 As shown, the cover 23 is also provided with a DC-DC output interface 271, an air compressor controller output interface 272 and a PTC (positive temperature coefficient thermistor) plug-in. The DC-DC output interface 271 is electrically connected to the output terminal of the DC-DC converter 21, the air compressor controller output interface 272 is electrically connected to the output terminal of the air compressor controller module 26, and the PTC plug-in is used to start at low temperatures to realize thermal management of the fuel cell system 100.

[0082] Optionally, the cover 23 is also provided with a low-voltage signal connector 275, which is used to provide power and control signals to the internal low-voltage circuits (such as control modules, sensors, etc.) of the fuel cell system 100. The low-voltage signal connector 275 can support high current transmission. Optionally, the low-voltage signal connector 275 is electrically connected to the DC-DC converter 21.

[0083] Optionally, the side wall of the cover 23 is also provided with an exhaust port 274, which is used to ensure the safe use of the fuel cell system 100. During the use of the fuel cell system 100, the pressure on the anode side of the stack 11 is kept stable by precisely controlling hydrogen emissions, thereby improving fuel conversion efficiency; when the hydrogen pressure in the fuel cell system 100 exceeds the safety threshold, the exhaust port 274 opens and releases hydrogen, which can reduce the risk of explosion.

[0084] In one implementation, such as Figure 2 As shown, the fuel cell stack 11 also has a connection terminal 111 that extends into the heat dissipation space 231 and is electrically connected to the DC-DC converter 21.

[0085] The connection terminal 111 and the DC-DC converter 21 can be directly or indirectly connected. They can be directly connected and fixed by welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., with no specific limitations. Optionally, the fuel cell stack 11 has a positive connection terminal 111 and a negative connection terminal 111. The positive and negative connection terminals 111 can be located on the same side of the fuel cell stack 11, or they can be respectively located on adjacent or opposite sides of the fuel cell stack 11, with no specific limitations. The positive connection terminal 111 is connected to the positive input terminal of the DC-DC converter 21, and the negative connection terminal 111 is connected to the negative input terminal of the DC-DC converter 21. The DC-DC converter 21 can convert the unstable voltage output by the fuel cell stack 11 into a DC voltage that matches the requirements of the electrical components.

[0086] In one specific embodiment, such as Figure 2 and Figure 3 As shown, the connection terminal 111 extends toward the cover 23 and is connected to the input terminal of the DC-DC converter 21.

[0087] By setting the connection terminal 111 of the fuel cell stack 11 to be electrically connected to the DC-DC converter 21, the DC-DC converter 21 and the fuel cell stack 11 are integrated into the fuel cell system 100. This reduces the need for external wiring connections, increases the space utilization of the fuel cell system 100, and effectively controls the structural quality of the fuel cell system 100.

[0088] In one embodiment, the fuel cell system 100 further includes a sealing module, through which the housing 13 and the cover 23 are elastically abutted.

[0089] The sealing module may include at least one sealing element commonly used by those skilled in the art, such as a sealing ring, sealing gasket, etc., without limitation.

[0090] This configuration achieves a sealed connection between the cover 23 and the housing 13 through a sealing module. The sealing method is simple and efficient, providing a safe working environment for the fuel cell system 100 and preventing hydrogen leakage within the fuel cell system 100.

[0091] In one embodiment, such as Figure 4 As shown, the sealing module includes a first sealing element 31 and a second sealing element 32. The side wall of the housing 13 and the side wall of the cover 23 are elastically abutted by the first sealing element 31, and the surface of the housing 13 facing the cover 23 and the surface of the cover 23 facing the housing 13 are elastically abutted by the second sealing element 32.

[0092] The materials of the first seal 31 and the second seal 32 can be thermoplastic elastomer (TPE) plastic, thermoplastic polyurethane (TPU) plastic, polyvinyl chloride (PVC) plastic, silicone, rubber, etc., and there are no specific restrictions.

[0093] Optionally, the first sealing element 31 can be connected to the outer peripheral wall of the cover 23, or it can be pre-installed on the inner side wall of the box 13. It only needs to be able to elastically abut against the outer peripheral wall of the cover 23 and the inner side wall of the box 13 when the cover 23 is connected to the box 13; no specific limitation is imposed. Alternatively, the first sealing element 31 can also elastically abut against the outer peripheral wall of the box 13 and the inner side wall of the cover 23; no limitation is imposed.

[0094] Optionally, the second seal 32 may be pre-set on the surface of the housing 13 facing the cover 23 and elastically abut against the cover 23; or, the second seal 32 may also be pre-set on the surface of the cover 23 facing the housing 13 and elastically abut against the housing 13, without limitation.

[0095] In one specific embodiment, such as Figure 4 As shown, the first seal 31 and the second seal 32 are sealing rings, and the second seal 32 is located outside the first seal 31, that is, the ring length of the second seal 32 is greater than the ring length of the first seal 31.

[0096] With this configuration, a double seal is achieved between the cover 23 and the housing 13 through the first seal 31 and the second seal 32, which can better protect the fuel cell system 100.

[0097] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0098] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A fuel cell system (100), characterized in that, include: The fuel cell assembly (10) includes a top-mounted buffer (12), which is an elastic member and has a connecting groove (121); The electronic control assembly (20) includes a reinforcing rib (22) located at the bottom. The electronic control assembly (20) is disposed on the top of the fuel cell assembly (10). The reinforcing rib (22) extends into the connecting groove (121) and elastically abuts against the buffer (12).

2. The fuel cell system (100) according to claim 1, characterized in that, The fuel cell stack assembly (10) further includes a housing (13) and a fuel cell stack (11), the fuel cell stack (11) being disposed inside the housing (13), and the buffer (12) being disposed on the top of the fuel cell stack; the electronic control assembly (20) further includes a cover (23) and a heat sink (24), the cover (23) being connected to the housing (13), the heat sink (24) being disposed on the cover (23), the reinforcing rib (22) protruding from the surface of the heat sink (24), and the heat sink (24) being used to flow a cooling medium for heat dissipation.

3. The fuel cell system (100) according to claim 1, characterized in that, The reinforcing rib (22) includes a first side (221) and a second side (222) arranged opposite to each other. The first side (221) and / or the second side (222) are connected to the inner wall of the connecting groove (121). The first side (221) and the second side (222) have an included angle α, which satisfies: 60°≤α≤150°.

4. The fuel cell system (100) according to claim 2, characterized in that, One of the reinforcing rib (22) and the buffer (12) is provided with a positioning part (223), and the other is provided with a positioning hole (122). The positioning part (223) and the positioning hole (122) are connected to each other to position the cover (23) and the fuel cell stack.

5. The fuel cell system (100) according to claim 2, wherein the heat dissipation component (24) includes a cover plate (241) and a water channel structure (242), the cover plate (241) is connected to the cover body (23) and encloses a heat dissipation space (231), the reinforcing rib (22) is disposed on the surface of the cover plate (241) facing the fuel cell stack (11), and the water channel structure (242) is disposed on the surface of the cover plate (241) facing away from the reinforcing rib (22).

6. The fuel cell system (100) according to claim 5, characterized in that, The electronic control assembly (20) also includes a DC-DC converter (21) and an air compressor controller module (26), both of which are housed in the heat dissipation space (231) and are thermally connected to the heat sink (24). The DC-DC converter (21) is electrically connected to the fuel cell stack (11).

7. The fuel cell system (100) according to claim 6, characterized in that, The fuel cell stack (11) also has a connection terminal (111) that extends into the heat dissipation space (231) and is electrically connected to the DC-DC converter (21).

8. The fuel cell system (100) according to claim 2, characterized in that, The fuel cell system (100) also includes a sealing module, through which the housing (13) and the cover (23) are elastically connected.

9. The fuel cell system (100) according to claim 8, characterized in that, The sealing module includes a first sealing element (31) and a second sealing element (32). The side wall of the housing (13) and the side wall of the cover (23) are elastically abutted by the first sealing element (31). The surface of the housing (13) facing the cover (23) and the surface of the cover (23) facing the housing (13) are elastically abutted by the second sealing element (32).

10. A vehicle, characterized in that, It includes electrical components and a fuel cell system (100) as described in any one of claims 1 to 9, the fuel cell system (100) being used to supply power to the electrical components.

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