Dual hydrogen fuel cell engine tractor chassis structure

Abstract

The present invention discloses a chassis layout structure of a dual hydrogen fuel cell system tractor, comprising a first hydrogen fuel cell engine, a second hydrogen fuel cell engine, a power battery pack, an integrated control module, an electric drive system, a hydrogen storage system, a fuel cell heat dissipation module, a fuel cell cooling pipeline, a high-voltage wiring harness, a charging port, a first fuel cell air filter, a second fuel cell air filter, a power battery bracket, a left frame, and a right frame. The components of the present invention are reasonably arranged and compact in structure, fully considering the layout of high and low pressure separation, water circuits, wiring, gas circuits, etc.; taking into account fuel cell systems of different manufacturers, and taking into account central drive configuration and electric drive axle configuration; the hydrogen fuel cell system and its heat dissipation system, and the power battery system are symmetrically placed to make the route of the pipeline harness smoother, and facilitate production, commissioning, and maintenance.

Description

TECHNICAL FIELD

[0001] The application relates to a double-hydrogen fuel cell system tractor chassis arrangement and belongs to the technical field of design and manufacture of commercial vehicle chassis. BACKGROUND

[0002] Hydrogen, as a clean and carbon-free energy source, plays an important role in the field of commercial vehicles. In order to meet the requirements of hydrogen fuel cell commercial vehicle operation scenarios, low hydrogen consumption and long service life, the rated power of the hydrogen fuel cell system matched with the commercial vehicle must be greater than or equal to 220Kw. At present, the single hydrogen fuel cell system technology with a power of 220Kw or more is not mature and is expensive. In order to consider the cost, the double-hydrogen fuel cell system is adopted, and the commercial vehicle meeting the user's demand is designed, which becomes the optimal scheme. However, the volume, weight and accessory connection of the double-hydrogen fuel cell system are more complex than those of the single-hydrogen fuel cell system. If the double-hydrogen fuel cell system is not reasonably arranged, the production and assembly will be difficult, and the user will have difficulty in maintenance. The occupied volume is too large, which will affect the hydrogen storage capacity and the utilization of chassis space. Specifically, 1) the double-hydrogen fuel cell system is arranged behind the cab on the frame, the lower side is the double-fuel cell system, and the upper side is the hydrogen storage system. The disadvantage is that the hydrogen storage system space is occupied, the hydrogen storage capacity is reduced, and the vehicle endurance is poor. 2) The double-hydrogen fuel cell system is arranged under the cab and in the middle of the frame, and is arranged in front and back. The disadvantage is that the hydrogen fuel cell system accessories such as heat dissipation, air intake and exhaust are difficult to install. The hydrogen fuel cell system at the rear of the vehicle driving direction is partially under the hydrogen storage system, which is difficult to maintain and maintain. 3) Regarding the power distribution of the vehicle, the double-hydrogen fuel cell system needs two-way power distribution. At present, the power distribution box of most manufacturers in the market only supports one fuel cell loop, and an additional power distribution box is needed to realize the function. As a result, the number of parts and wire harnesses is increased, and the wire harnesses are more likely to cross and become chaotic. SUMMARY

[0003] The application aims to solve the technical problems existing in the prior art and provides a double-hydrogen fuel cell system tractor chassis arrangement with reasonable layout and compact structure.

[0004] To solve this technical problem, the application provides a hydrogen fuel cell system truck chassis arrangement structure, which comprises a hydrogen fuel cell engine one, a hydrogen fuel cell engine two, a power battery pack, an integrated control module, an electric drive system, a hydrogen storage system, a fuel cell heat dissipation module, a fuel cell cooling pipeline, a high-voltage wire harness, a charging port, a fuel cell air filter one, a fuel cell air filter two, a power battery support, a left vehicle frame and a right vehicle frame; the power battery support is connected with the vehicle frame through an overhanging support, and a cross beam one and a cross beam two are arranged at the connection position; the power battery pack is fixed on the power battery support; the hydrogen fuel cell engine one and the hydrogen fuel cell engine two are arranged at the rear of an axle and on the left and right sides of the vehicle frame; the power battery pack comprises four boxes and is arranged on the left and right sides of the vehicle frame behind the fuel cell; the integrated control module is fixed below the cab; the electric drive system is in the electric drive axle configuration or the central drive configuration; the hydrogen storage system is arranged above the vehicle frame behind the cab; the fuel cell heat dissipation module is arranged above the hydrogen storage system behind the cab; the fuel cell cooling pipeline is connected with the fuel cell system downward from the fuel cell heat dissipation module; the charging port is a single charging port and is arranged on the left or right side of the vehicle behind the axle; the charging port is provided with a movable protective cover; the fuel cell air filter one is arranged on the fender support behind the axle; and the fuel cell air filter two is arranged on the front facade of the hydrogen storage system.

[0005] The hydrogen fuel cell system truck chassis arrangement structure further comprises overhanging supports, support one, support two, support three and support four, and the left and right vehicle frames are provided with overhanging supports; two support threes are directly connected with the vehicle frame; the support two and the support four are fixed on the connecting beam of the overhanging support and the power battery support; the cooling interface and the air inlet and outlet interface of the hydrogen fuel cell engine one and the hydrogen fuel cell engine two face forward and are connected with the support two, the support three and the support four through four or eight points of suspension.

[0006] The hydrogen storage system is composed of multiple gas cylinders arranged horizontally or vertically above the vehicle frame behind the cab, and the working pressure is 35 MPa or 70 MPa.

[0007] The power battery pack comprises a right power battery pack and a left power battery pack; the left power battery pack comprises two boxes and is arranged on the left side of the vehicle frame behind the hydrogen fuel cell engine one; the right power battery pack comprises two boxes and is arranged on the right side of the vehicle frame behind the hydrogen fuel cell engine two; the right power battery pack and the left power battery pack are both arranged vertically, and the uppermost surface does not exceed the upper surface of the vehicle frame.

[0008] When the electric drive system is in the electric drive axle configuration, the electric drive axle is an integrated drive axle, a transmission mechanism and a motor; when the electric drive system is in the central drive configuration, the motor and the transmission are arranged inside the middle section of the vehicle frame below the hydrogen storage system, and the motor and the transmission are connected with the drive axle through a traditional shaft.

[0009] The fuel cell heat dissipation module comprises two independent fuel cell heat dissipation module two and fuel cell heat dissipation module one, each module is integrated with a multi-fan power distribution box for power distribution of the fan; the fuel cell heat dissipation module one is used for heat dissipation of the hydrogen fuel cell engine one, and the fuel cell heat dissipation module two is used for heat dissipation of the hydrogen fuel cell engine two.

[0010] The integrated control module comprises a multi-in-one controller, an electric steering pump, a two-in-one air conditioner, a low-voltage storage battery, a BMS, and an integrated control module support, wherein the multi-in-one controller integrates two-way fuel cell power distribution, two-way power battery power distribution, DCDC and MCU.

[0011] The fuel cell cooling pipeline comprises fuel cell cooling pipeline one and fuel cell cooling pipeline two, the fuel cell cooling pipeline one is connected downward from the fuel cell heat dissipation module one to the hydrogen fuel cell engine one, and the middle section is fixed on the left front facade of the hydrogen storage system; the fuel cell cooling pipeline two is connected downward from the fuel cell heat dissipation module two to the hydrogen fuel cell engine two, and the middle section is fixed on the right front facade of the hydrogen storage system.

[0012] The fuel cell air filter one comprises right fuel cell air filter one and left fuel cell air filter one, the right fuel cell air filter one is arranged on the rear axle, wing support, and located on the right side, and the left fuel cell air filter one is arranged on the rear axle, wing support, and located on the left side, and is used for fine filtration and chemical filtration of air intake of the fuel cell engine; the fuel cell air filter two comprises right fuel cell air filter two and left fuel cell air filter two, and is arranged on the front facade of the hydrogen storage system, and one is arranged on the left side and one is arranged on the right side, and is used for coarse filtration of air intake of the fuel cell engine.

[0013] The high-voltage wire harness is a wire harness between the multi-in-one controller and each high-voltage component, and the middle frame wire harness is arranged on the frame.

[0014] Beneficial effects: the components of the present application are arranged reasonably and rationally, and the structure is compact, the high-low voltage separation, waterway, line, airway and the like are fully considered; the fuel cell systems of different manufacturers are considered, the central drive configuration and the electric drive bridge configuration are considered, the commonly used high-voltage battery of the hydrogen fuel is considered; the modularity and the convenience of installation and maintenance are fully considered; the net zero emission, the double carbon is needed. The present application places the hydrogen fuel cell system and the heat dissipation system, the power battery system symmetrically through reasonable layout, so that the trend of the pipeline is more smooth, each component is more convenient to maintain, the vehicle modularity, generalization and integration are significantly improved, and the production, debugging and maintenance are more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic diagram of the present application;

[0016] Figure 2Structure schematic plan view of the present application;

[0017] Figure 3 Structure schematic front view of the present application;

[0018] Figure 4 Structure schematic side view of the present application

[0019] Figure 5 Structure schematic view of the present application frame two side mounting bracket.

[0020] In the figure: 1, cab; 2, fuel cell heat dissipation module two; 3, hydrogen storage system; 4, right power battery pack; 5, electric drive system; 6, left power battery pack; 7, hydrogen fuel cell engine one; 8, fuel cell heat dissipation module one; 9, integrated control module; 10, hydrogen fuel cell engine two; 12, right fuel cell air filter one; 13, left fuel cell air filter one; 14, fuel cell cooling pipeline two; 15, fuel cell cooling pipeline one; 16, right fuel cell air filter two; 17, left fuel cell air filter two; 18, high voltage wire harness; 19, left frame; 20, outrigger; 21, bracket one; 22, bracket two; 23, bracket three; 24, bracket four; 25, power battery bracket; 26, cross beam one; 27, cross beam two; 28, right frame. DETAILED DESCRIPTION

[0021] The present application will be described in detail below in conjunction with the accompanying drawings and examples.

[0022] As Figures 1-5As shown, the present application provides a hydrogen fuel cell system truck chassis arrangement structure, comprising a hydrogen fuel cell engine 7, a hydrogen fuel cell engine 10, a power battery pack, an integrated control module 9, an electric drive system 5, a hydrogen storage system 3, a fuel cell cooling module, a fuel cell cooling pipeline, a high-voltage wire harness 18, a charging port, a fuel cell air filter 1, a fuel cell air filter 2, a power battery support 25, a left frame 19 and a right frame 28; the power battery support 25 is connected to the frame through an overhanging support, and a cross beam 1 26 and a cross beam 2 27 are correspondingly arranged at the connection position to ensure the strength; the power battery pack is fixed on the power battery support 25; the hydrogen fuel cell engine 7 and the hydrogen fuel cell engine 10 are arranged at the rear of the axle, on the left and right sides of the frame, respectively, which is convenient for installation, maintenance and repair, and has good proximity; the power battery pack comprises a total of 4 boxes, which are arranged in two groups at the rear of the fuel cell, on the left and right sides of the frame; the integrated control module 9 is fixed below the cab 1; the electric drive system 5 is in the form of an electric drive axle or a central drive; the hydrogen storage system 3 is arranged above the frame behind the cab 1; the fuel cell cooling module is arranged above the hydrogen storage system 3 behind the cab 1; the fuel cell cooling pipeline is connected to the fuel cell system downward from the fuel cell cooling module; the charging port is a single charging port, which is arranged on the left or right side of the vehicle behind the axle, which is convenient for charging, assembly and maintenance, and a movable protective cover is arranged on the charging port 19 to increase the waterproof and dustproof effect; the fuel cell air filter 1 is arranged on the fender support behind the axle; and the fuel cell air filter 2 is arranged on the front facade of the hydrogen storage system 3.

[0023] The hydrogen fuel cell system truck chassis arrangement structure further comprises an overhanging support 20, a support 1 21, a support 2 22, a support 3 23 and a support 4 24, the left frame 19 and the right frame 28 are provided with the overhanging support 20, two support 3 23 are directly connected to the frame, the support 2 22 and the support 4 24 are fixed on the connecting beam of the overhanging support 20 and the power battery support 25; the cooling interface and the air inlet and outlet interface of the hydrogen fuel cell engine 7 and the hydrogen fuel cell engine 10 are forward, which is convenient for the connection of the pipeline, and are connected to the support 2 22, the support 3 23 and the support 4 24 through four or eight points of suspension, respectively.

[0024] The hydrogen storage system 3 is composed of a plurality of gas cylinders arranged horizontally or vertically above the frame behind the cab, the working pressure is 35MPa or 70MPa, and the modular design can adapt to a variety of systems with different hydrogen storage capacities.

[0025] The power battery pack includes a right power battery pack 4 and a left power battery pack 6, the left power battery pack 6 is two boxes, arranged on the left side of the frame, behind the hydrogen fuel cell engine one 7; the right power battery pack 4 is two boxes, arranged on the right side of the frame, behind the hydrogen fuel cell engine two 10; the right power battery pack 4 and the left power battery pack 6 are longitudinally arranged, the uppermost part of which does not exceed the upper surface of the frame; the right power battery pack 4 and the left power battery pack 6 are fixed on the power battery support 25. The power battery is arranged behind the fuel cell, on both sides of the frame, and is modularly designed, which is convenient for installation and has better strength.

[0026] When the electric drive system 5 is in the electric drive axle configuration, the electric drive axle is an integrated drive axle, a transmission mechanism and an electric motor; when the electric drive system 5 is in the central drive configuration, the electric motor and the transmission are arranged inside the middle section of the frame, below the hydrogen storage system, and the electric motor and the transmission are connected to the drive axle through a traditional shaft; the structure is convenient to assemble and maintain on the whole vehicle, has good universality and high adaptability.

[0027] The fuel cell cooling pipeline includes a fuel cell cooling pipeline one 15 and a fuel cell cooling pipeline two 14, the fuel cell cooling pipeline one 15 is connected downward from the fuel cell cooling module one 8 to the hydrogen fuel cell engine one 7, and the middle section is fixed on the left front facade of the hydrogen storage system 3; the fuel cell cooling pipeline two 14 is connected downward from the fuel cell cooling module two 2 to the hydrogen fuel cell engine two 10, and the middle section is fixed on the right front facade of the hydrogen storage system 3.

[0028] The integrated control module 9 includes a multi-in-one controller, an electric steering pump, a two-in-one air conditioner, a low-voltage storage battery, a BMS, an integrated control module support, is arranged below the cab, has good waterproofness, is modularly designed, has high integration, good proximity, and is convenient to maintain, wherein the multi-in-one controller integrates two-way fuel cell power distribution, two-way power battery power distribution, DCDC and MCU; the DCDC system is arranged in front of the hydrogen storage system, has good cooling effect, is convenient to assemble and maintain, and is convenient to connect the wire harness.

[0029] The fuel cell cooling pipeline includes a fuel cell cooling pipeline one 15 and a fuel cell cooling pipeline two 14, the fuel cell cooling pipeline one 15 is connected downward from the fuel cell cooling module one 8 to the hydrogen fuel cell engine one 7, and the middle section is fixed on the left front facade of the hydrogen storage system 3; the fuel cell cooling pipeline two 14 is connected downward from the fuel cell cooling module two 2 to the hydrogen fuel cell engine two 10, and the middle section is fixed on the right front facade of the hydrogen storage system 3.

[0030] The fuel cell air filter one includes a right fuel cell air filter one 12 and a left fuel cell air filter one 13, the right fuel cell air filter one 12 is arranged on the rear axle, the wing support, and located on the right side, and the left fuel cell air filter one 13 is arranged on the rear axle, the wing support, and located on the left side, for fine filtering and chemical filtering of fuel cell engine intake air; the fuel cell air filter two includes a right fuel cell air filter two 16 and a left fuel cell air filter two 17, one on the left side and one on the right side of the front vertical surface of the hydrogen storage system 3, for coarse filtering of fuel cell engine intake air; the fuel cell intake air filter one is arranged above and below, respectively arranged on the hydrogen storage system and the rear wing support, space is used efficiently, maintenance is convenient, high air is taken, and the cleanliness is high; double-pole filtering, effective pure air.

[0031] The high-voltage wire harness 18 is a wire harness between the all-in-one controller and each high-voltage component, the frame middle wire harness is arranged on the frame, is fixed through a special pipe clamp and a wire harness support, is sequentially separated, the wire harness is reasonably and aesthetically ensured to go, and the occurrence of electromagnetic interference is reduced.

[0032] The application solves the problems of difficult maintenance and maintenance of the double hydrogen fuel cell engine, the double hydrogen fuel cell system is arranged on the rear axle, the left and right sides of the frame, does not occupy the hydrogen storage system space, the side accessibility is good, installation and maintenance are convenient, the integrated control module is arranged below the cab, a plurality of components are integrated, the number of wire harnesses is reduced, electromagnetic interference and maintenance difficulties caused by wire harness intersection, coincidence and confusion are avoided, the fuel cell system stack heat dissipation is arranged on the upper part of the hydrogen storage system, relevant pipelines are directly connected with the fuel cell from the left and right sides downward, there is no intersection, the going is more reasonable, and the arrangement is more convenient, the double fuel cell system, the high-voltage battery pack, the hydrogen storage system, the integrated control system, the fuel cell heat dissipation module, the fuel cell intake system, the electric drive system, the charging port, and the high and low voltage wire harness going are arranged through the modularization, repeated design is reduced, and universality is improved.

[0033] The application is arranged reasonably and compactly, high and low voltage separation, waterway, line, gas path and the like are fully considered, fuel cell systems of different manufacturers are considered, central drive configuration and electric drive bridge configuration are considered, commonly used high-voltage batteries of hydrogen fuel in the market are considered, modularity and installation and maintenance convenience are fully considered, net zero emission, double carbon is needed, the application is placed symmetrically through reasonable layout, hydrogen fuel cell systems and heat dissipation systems, power battery systems, the going of the pipeline is smoother, each component is more convenient to maintain, vehicle modularity, universality and integration are significantly improved, and production, debugging and maintenance are more convenient.

[0034] The above-mentioned embodiments of the application are only examples, and are not the only ones, all changes within the scope of the application or equivalent to the scope of the application are covered by the application.

Claims

1. A chassis layout structure for a dual hydrogen fuel cell system tractor, characterized by: The invention comprises a hydrogen fuel cell engine 1 (7), a hydrogen fuel cell engine 2 (10), a power battery pack, an integrated control module (9), an electric drive system (5), a hydrogen storage system (3), a fuel cell heat dissipation module, a fuel cell cooling pipeline, a high-voltage wiring harness (18), a charging port, a fuel cell air filter 1, a fuel cell air filter 2, a power battery bracket (25), a left frame (19) and a right frame (28); the power battery bracket (25) is connected to the frame through a transition bracket, and a crossbeam 1 (26) and a crossbeam 2 (27) are correspondingly provided at the connection; the power battery pack is fixed on the power battery bracket (25); the hydrogen fuel cell engine 1 (7) and the hydrogen fuel cell engine 2 (10) are respectively arranged behind an axle and on the left and right sides of the frame; The power battery pack comprises four boxes in total, which are arranged in two groups behind the fuel cell and on the left and right sides of the vehicle frame; the integrated control module (9) is fixed below the cab (1); the electric drive system (5) is of an electric drive axle configuration or a central drive configuration; the hydrogen storage system (3) is arranged behind the cab (1) and above the vehicle frame; the fuel cell heat dissipation module is arranged behind the cab (1) and above the hydrogen storage system (3); the fuel cell cooling pipeline is connected to the fuel cell system from the fuel cell heat dissipation module downward; the charging port is a single charging port, which is arranged on the left or right side of the vehicle behind one axle, and a movable protective cover is provided on the charging port; the fuel cell air filter 1 is arranged behind one axle and on the fender bracket; the fuel cell air filter 2 is arranged on the front elevation of the hydrogen storage system (3); The fuel cell cooling pipeline comprises a fuel cell cooling pipeline 1 (15) and a fuel cell cooling pipeline 2 (14). The fuel cell cooling pipeline 1 (15) is connected downwardly from the fuel cell heat dissipation module 1 (8) to the hydrogen fuel cell engine 1 (7), and the middle section is fixed on the left front facade of the hydrogen storage system (3); the fuel cell cooling pipeline 2 (14) is connected downwardly from the fuel cell heat dissipation module 2 (2) to the hydrogen fuel cell engine 2 (10), and the middle section is fixed on the right front facade of the hydrogen storage system (3).

2. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: The invention also includes an outrigger (20), a bracket 1 (21), a bracket 2 (22), a bracket 3 (23) and a bracket 4 (24), wherein the outrigger (20) is provided on the outside of the left frame (19) and the right frame (28), the two brackets 3 (23) are directly connected to the frame, and the bracket 2 (22) and the bracket 4 (24) are fixed on the connecting beam between the outrigger (20) and the power battery bracket (25); the cooling interface and the intake and exhaust interface of the hydrogen fuel cell engine 1 (7) and the hydrogen fuel cell engine 2 (10) face forward, and are connected to the bracket 2 (22), the bracket 3 (23) and the bracket 4 (24) through four-point or eight-point suspension respectively.

3. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: The hydrogen storage system (3) is composed of a plurality of gas cylinders placed horizontally or vertically, arranged above the vehicle frame and behind the cab, and has a working pressure of 35 MPa or 70 MPa.

4. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: The power battery pack comprises a right power battery pack (4) and a left power battery pack (6), wherein the left power battery pack (6) comprises two boxes and is arranged on the left side of the vehicle frame and behind the first hydrogen fuel cell engine (7); the right power battery pack (4) comprises two boxes and is arranged on the right side of the vehicle frame and behind the second hydrogen fuel cell engine (10); both the right power battery pack (4) and the left power battery pack (6) are arranged longitudinally, and their uppermost parts do not exceed the upper wing surface of the vehicle frame.

5. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: When the electric drive system (5) is in an electric drive axle configuration, the electric drive axle is an integrated drive axle, a speed change mechanism, and a motor; when the electric drive system (5) is in a central drive configuration, the motor and the gearbox are arranged on the inner side of the middle section of the frame and below the hydrogen storage system (3), and the motor and the gearbox are connected to the drive axle via a traditional shaft.

6. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: The fuel cell heat dissipation module comprises two independent fuel cell heat dissipation modules 2 (2) and fuel cell heat dissipation module 1 (8), each module is integrated with a multi-fan power distribution box for distributing power to the fans; the fuel cell heat dissipation module 1 (8) dissipates heat for the hydrogen fuel cell engine 1 (7), and the fuel cell heat dissipation module 2 (2) dissipates heat for the hydrogen fuel cell engine 2 (10).

7. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: The integrated control module (9) comprises an all-in-one controller, an electric steering pump, a two-in-one air conditioner, a low-voltage battery, a BMS, and an integrated control module bracket, wherein the all-in-one controller integrates two fuel cell power distribution channels, two power battery power distribution channels, a DCDC, and an MCU.

8. The dual hydrogen fuel cell system tractor chassis layout structure according to claim 1, characterized in that: The fuel cell air filter 1 includes a right fuel cell air filter 1 (12) and a left fuel cell air filter 1 (13), wherein the right fuel cell air filter 1 (12) is arranged behind an axle, on a fender bracket, and on the right side, and the left fuel cell air filter 1 (13) is arranged behind an axle, on a fender bracket, and on the left side, and is used for fine filtration and chemical filtration of the fuel cell engine intake air; the fuel cell air filter 2 includes a right fuel cell air filter 2 (16) and a left fuel cell air filter 2 (17), which are arranged on the front facade of the hydrogen storage system (3), one on each side, and are used for coarse filtration of the fuel cell engine intake air.

9. The dual hydrogen fuel cell system tractor chassis layout structure according to any one of claims 1 to 8, characterized in that: The high-voltage wiring harness (18) is a wiring harness from the all-in-one controller to each high-voltage component, and the vehicle frame intermediate wiring harness is arranged on the vehicle frame.

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