CN112829606A

CN112829606A - Hydrogen-combustion stroke-increasing type electric truck

Info

Publication number: CN112829606A
Application number: CN202110246113.XA
Authority: CN
Inventors: 金源鸿; 成波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-05-25

Abstract

The invention discloses a hydrogen-combustion stroke-increasing type electric truck which comprises a frame, a cab and a cargo compartment, wherein the cab and the cargo compartment are arranged on the frame, the frame is also provided with an electric control system, a power battery system, a driving motor, a hydrogen-combustion stroke-increasing system and a hydrogen supply and storage system, a DC/DC module is arranged between the electric energy output end of the hydrogen-combustion stroke-increasing system and the electric energy input end of the power battery system, and a pre-charging control circuit is arranged between the DC/DC module and the power battery system. The hydrogen-burning range-increasing type electric truck provided by the invention uses hydrogen as range-increasing fuel to be matched with the power battery system, so that better cruising ability can be provided for the electric truck, no environmental pollution is caused, and meanwhile, when the hydrogen-burning range-increasing system charges the power battery system, the power battery system is better protected through the pre-charging control circuit, and the use safety is improved.

Description

Hydrogen-combustion stroke-increasing type electric truck

Technical Field

The invention relates to the technical field of electric trucks, in particular to a hydrogen-burning range-extending type electric truck.

Background

Trucks refer to automobiles used primarily for transporting cargo, and are the primary means of commercial transportation. At present, most of trucks in China use diesel oil and gasoline as power fuels, and pollution gas is easily discharged out of standard. The current environment protection situation is increasingly severe, higher requirements are also placed on energy conservation and emission reduction of trucks, and a novel energy source needs to be searched as power.

Therefore, the electric truck has the working attributes of no emission, no fuel consumption, starting speed regulation by a motor and the like during operation, so that the electric truck can better adapt to the development of the future novel transportation industry compared with the traditional fuel truck, and is also favorable for coping with the dilemma of energy crisis. However, the electric truck has the defects of limited endurance mileage and overlong charging time in the application of the transportation industry, and the requirement of long-distance transportation is often difficult to meet, so that the application of the electric truck is greatly limited.

Disclosure of Invention

In order to solve the problems, the invention provides a hydrogen-burning range-extended electric truck which has good range-extending capability as a diesel truck, does not emit polluted gas and provides a new direction for the energy development of the truck.

A hydrogen-combustion stroke-increasing electric truck comprises a frame, a cab and a cargo compartment which are arranged on the frame, wherein the frame is also provided with an electric control system, a power battery system, a driving motor, a hydrogen-combustion stroke-increasing system and a hydrogen supply and storage system;

a DC/DC module is arranged between the electric energy output end of the hydrogen-burning range-increasing system and the electric energy input end of the power battery system, and a pre-charging control circuit is arranged between the DC/DC module and the power battery system;

the pre-charging control circuit comprises a main contactor, a time relay, a pre-charging contactor and a pre-charging resistor, wherein the positive electrode of the power battery system is respectively connected with the first end of the pre-charging resistor and the first end of the main contactor, the second end of the pre-charging resistor is connected with the first end of the pre-charging contactor, and the second end of the main contactor and the second end of the pre-charging contactor are both connected with the positive electrode of the DC/DC module; the first output end of the time relay is connected with the control end of the main contactor, the second output end of the time relay is connected with the control end of the pre-charging contactor, and the negative electrode of the power battery system is connected with the negative electrode of the DC/DC module.

Furthermore, a fuse is connected in series between a common terminal of the second terminal of the pre-charging contactor and the second terminal of the main contactor and the positive electrode of the DC/DC module.

Furthermore, the power battery system comprises a battery pack and a temperature control system, wherein the battery pack and the temperature control system are both connected with a battery management system BMS, the DC/DC module is connected with the battery pack, the hydrogen combustion range extending system comprises a generator connected with the DC/DC module and a hydrogen combustion engine connected with the generator, and the hydrogen combustion engine is connected with an air compressor and a hydrogen supply and storage system.

Furthermore, an air inlet of the air compressor is connected with an air filter, a pressure reducing valve, a hydrogen filter and a gas flow meter which are sequentially connected are arranged between the hydrogen supply and storage system and the hydrogen combustion engine, and the gas flow meter is connected with the whole vehicle controller.

Furthermore, the hydrogen-burning range-extending system further comprises a cooling system used for radiating the hydrogen-burning engine, the cooling system comprises a water supplementing kettle, a cooling liquid filter, a heat radiating water pump, a first heat exchange tube and a radiator which are sequentially connected, a water outlet end of the radiator is communicated with the water supplementing kettle to form a circulating water path, the first heat exchange tube radiates the heat of the hydrogen-burning engine, and a second heat exchange tube used for radiating the generator is further arranged between the heat radiating water pump and the radiator.

Furthermore, the cooling liquid filter comprises a shell, a liquid inlet positioned at the top of the shell and a liquid outlet positioned at the bottom of the shell, a positioning ring is fixed on the inner wall of the shell, a plurality of stop blocks which are in sliding connection with the positioning ring are evenly distributed on the positioning ring, a first spring is arranged between the stop block and the inner wall of the shell, a filtering component is arranged in the shell, the filtering component comprises a mounting ring and a first filter screen fixed on the mounting ring, a second spring is arranged between the mounting ring and the positioning ring, one side of the stop block close to the mounting ring is provided with a slope which inclines towards the direction close to the first filter screen, the stop block is provided with a first flow guide hole, the positioning ring is provided with a second flow guide hole matched with the first flow guide hole, and the mounting ring pushes the stop block to move to enable the second flow guide hole to be communicated with the first flow guide hole when being pressed downwards.

Furthermore, the hydrogen-burning range-increasing system is located below the cab, wherein a mounting frame fixed on the frame is arranged behind the cab, the hydrogen supply and storage system is fixed on the mounting frame, the bottom of the cargo compartment is provided with an inner concave part matched with the mounting frame, the battery pack is provided with 2 groups and is respectively installed on the left side and the right side of the frame, the battery pack is located in the middle of the frame, the electric control system, the battery management system BMS and the motor control system are all installed above the battery pack, and the driving motor is installed on one side, far away from the power battery system, of a rear axle of the frame.

Further, supply hydrogen storage system to include at least one hydrogen storage bottle, the hydrogen storage bottle is fixed on the mounting bracket, the hydrogen storage bottle includes inner bag and the cladding shell outside the inner bag, the inner bag includes sealed inside lining of plastics, carbon fiber reinforced plastic layer and the glass fiber reinforced plastic layer that from interior to exterior set gradually, inner bag one end is provided with the gas port, gas port department is provided with the valve system of control gas port break-make, valve system includes the main control valve and can dismantle the connecing of being connected with the main control valve and connect the head, connect the head and install on the mounting bracket, and connect the head and pass through the pipeline with hydrogen in the hydrogen storage bottle for burning the hydrogen engine.

The invention has the following beneficial effects:

1. the hydrogen energy is used as fuel to charge the electric truck, no greenhouse gas and pollutant are discharged in the practical process, the environment is very friendly, and the development requirement of the society is met;

2. for the endurance of the truck, the charging gun can be used in parallel with the hydrogenation, so that the advantages of a pure electric vehicle can be inherited, a good endurance effect can be achieved, the truck is more flexible to use, and the application range is wider;

3. the hydrogen combustion can generate higher heat value than gasoline under the same condition, the generated energy far exceeds that of a common fuel engine, and the power generation efficiency can be effectively improved;

4. the power battery system and the hydrogen-burning range-increasing system can be always in a better working state, the service life and the energy conversion efficiency of the power battery system and the hydrogen-burning range-increasing system can be effectively prolonged, and the use cost is reduced;

5. through setting up the pre-charge control circuit at DC/DC module and power battery system, when charging, can close the pre-charge contactor at first, the disconnection of pre-charge contactor is controlled by time relay after a period, and main contactor is closed to can effectively eliminate because the electric energy inserts power battery system suddenly and to its heavy current impact in the twinkling of an eye that causes, play better protection to the system, increase substantially system security performance.

Drawings

FIG. 1 is a control flow diagram;

FIG. 2 is a diagram of a precharge control circuit;

FIG. 3 is a schematic diagram of a hydrogen-fired range extending system connection;

FIG. 4 is a schematic structural view of a first embodiment of the whole vehicle structure;

FIG. 5 is a schematic structural diagram of a second embodiment of the whole vehicle structure;

FIG. 6 is a schematic view of a connecting tube;

FIG. 7 is a schematic view of a spacing plate;

FIG. 8 is a schematic view of a coolant filter construction;

FIG. 9 is a schematic view of a retaining ring structure;

FIG. 10 is a schematic view of the stopper structure;

FIG. 11 is a schematic sectional view of a hydrogen storage cylinder;

FIG. 12 is an enlarged view of circle A of FIG. 11;

FIG. 13 is a schematic view of the connecting socket;

FIG. 14 is a schematic perspective view of a hydrogen storage cylinder;

FIG. 15 is a schematic view showing the structure of the outer shell of the hydrogen storage cylinder;

FIG. 16 is a schematic view of a mount configuration;

FIG. 17 is an enlarged view of circle B of FIG. 16;

FIG. 18 is a schematic view of an arcuate cover plate structure;

reference numerals: 1-hydrogen combustion range increasing system, 101-connecting pipe, 102-communicating part, 103-mounting part, 104-limiting disc, 105-second sealing ring, 106-first sealing ring, 107-auxiliary sealing plate, 108-elastic sleeve, 109-retaining ring, 110-sleeve pipe, 111-adjusting sleeve, 112-elastic claw, 113-shell, 114-positioning ring, 115-mounting ring, 116-connecting ring, 117-stop, 118-first spring, 119-second spring, 120-first filter screen, 121-limiting ring, 122-overlapping ring, 123-second filter screen, 124-second guide hole, 125-first guide hole, 2-battery pack, 3-electric control system, 4-battery management system BMS, 5-driving motor, 6-hydrogen supply and storage system, 601-plastic sealing lining, 602-carbon fiber reinforced plastic layer, 603-glass fiber reinforced plastic layer, 604-shell, 605-main control valve, 606-connecting head, 607-auxiliary sealing element, 608-mounting end head, 609-first mounting section, 610-first transition section, 612-second transition section, 613-third transition section, 614-fourth transition section, 615-second mounting section, 616-auxiliary air channel, 617-connecting seat, 618-connecting rod, 619-push rod, 620-sliding groove, 621-auxiliary spring, 622-sealing plug, 623-cross groove, 7-low-voltage battery, 8-low-voltage battery, 801-positioning groove, 802-guide rail, 803-bracket, 804-motor I, 805-arc cover plate, 806-connecting bracket, 807-driving device II, 808-screw rod, 809-sliding seat, 810-connecting plate, 811-slide rail, 812-arc pressing plate, 813-extrusion spring, 9-vehicle frame, 10-cab, 11-cargo compartment and 1101-concave part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "in communication" are to be interpreted broadly, e.g., as either fixed or removable communication, or integrally connected; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, the embodiment provides a hydrogen-combustion range-extending electric truck, which, like a conventional electric truck, includes a frame 9, a cab 10 disposed on the frame 9, a cargo compartment 11, a power battery system, an electric control system 3 and a driving motor 5, wherein a driver controls the power battery system and the driving motor 5 to operate through the electric control system 3 in the cab 10, so as to control the movement of the frame 9, the cargo compartment 11 is used for placing goods to be transported, and the greatest difference is that the frame 9 is further provided with the hydrogen-combustion range-extending system 1 for providing energy for the vehicle when needed, the hydrogen-combustion range-extending system 1 is connected with a hydrogen supply and storage system 6, and the hydrogen supply and storage system 6 supplies hydrogen to the hydrogen-combustion range-extending system 1, specifically, the electric control system 3 includes a vehicle controller and a motor controller, and the vehicle controller is respectively connected with the power battery system and the power battery system, The motor controller is in communication connection with the hydrogen-burning range-increasing system 1, wherein the electric energy output end of the power battery system is connected with the driving motor 5 through the motor controller, and the electric energy output end of the hydrogen-burning range-increasing system 1 is connected with the electric energy input end of the power battery system.

As shown in fig. 3, the power battery system generally includes a battery pack 2 and a battery management system BMS4, the hydrogen combustion range extending system 1 includes a hydrogen combustion engine, a generator, an air filter, an air compressor, and a hydrogen filter, the air filter is connected to the hydrogen combustion engine via the air compressor, the hydrogen combustion engine is connected to the hydrogen storage system 6, the hydrogen storage system 6 provides hydrogen for the hydrogen combustion engine, a hydrogen storage bottle is connected to the hydrogen filter, an electric power output terminal of the hydrogen combustion engine is connected to an electric power input terminal of the battery pack 2 via a DC/DC module to charge the battery pack 2, and the DC/DC module can perform a good DC boosting function during charging. In order to make the hydrogen-burning engine, the vehicle control unit, the battery management system BMS4 and the like work better, a low-voltage storage battery 7 can be arranged, and the low-voltage storage battery 7 provides low-voltage direct current for the components.

When the hydrogen-burning range-increasing system is arranged, please refer to fig. 4 and 5, the hydrogen-burning range-increasing system 1 can be arranged at the front part of the frame 9, namely below the cab 10, the hydrogen storage system 6 is fixed at the rear part of the cab 10 and is close to the cab 10, the power battery system is arranged in the middle part of the frame 9, namely behind or partially below the hydrogen storage system 6, and the driving motor 5 is arranged at the rear part of the frame 9, namely on the side of the rear axle far away from the cab 10, so that the gravity center of the truck can be effectively reduced, the stability of the truck is improved, namely, the battery pack 2 with larger mass and less daily maintenance and the driving motor 5 are arranged on the chassis of the frame 9, the gravity center of the system is reduced, and the. Specifically, the hydrogen-burning range-increasing system 1 is arranged below the cab 10 (the middle parts of the left side and the right side of the corresponding positions of the frame 9), which can not only help to reduce the center of gravity, but also help to improve the heat dissipation effect by the aid of the unclosed frame 9; the hydrogen supply and storage system 6 is arranged behind the cab 10, an installation frame 8 fixed on the frame 9 can be arranged behind the cab 10 for fixing the hydrogen supply and storage system 6, the battery pack 2 is arranged into 2 groups, the battery pack 2 is installed in the middle of the frame 9 in a bilateral symmetry mode during installation, the center of gravity of the whole vehicle is uniform from side to side, the center of the whole vehicle is further reduced, the stability of the vehicle is improved, the low-voltage storage battery 7 is installed in front of the battery pack 2, the temperature control system for driving the power battery system is installed above the low-voltage storage battery 7, the whole vehicle controller and the battery management system BMS4 are respectively installed above the battery pack 2, the driving motor 5 is also installed in the rear of the frame 9 from side to side through a motor suspension bracket and is used for driving a rear wheel driving shaft of the truck, the whole, the balance of the whole truck is improved, so that the stability of the truck is effectively improved.

However, in the actual use process, when the closed circuit is charged, an instantaneous large current is generated in the circuit by the input capacitor at the DC/DC module end, which easily causes overcurrent of the system contactor and damages the system. In contrast, a pre-charge control circuit is further disposed between the DC/DC module and the battery pack 2, and as shown in fig. 2, the pre-charge control circuit includes a main contactor, a pre-charge resistor, and a time relay; the positive input end of the pre-charging control circuit is connected with the positive electrode of the DC/DC module, the negative input end of the pre-charging control circuit is connected with the negative electrode of the DC/DC module, the positive output end of the pre-charging control circuit is connected with the positive electrode of the battery pack 2, and the negative output end of the pre-charging control circuit is connected with the negative electrode of the battery pack 2; the pre-charging contactor and the pre-charging contactor are connected in series and then connected in parallel, the time relay respectively outputs and controls the pre-charging contactor and the main contactor, and the time relay is connected with the vehicle control unit and receives instructions of the vehicle control unit so as to control the pre-charging contactor and the main contactor to be opened and closed. The working process of the pre-charging control circuit is as follows: when the power supply system is powered on, the pre-charging contactor is firstly closed, the pre-charging contactor is disconnected after a certain time is controlled by the time relay, for example, 5s, and the main contactor is closed while the pre-charging contactor is related, so that instant impact caused by sudden connection of electric energy into the power battery system is avoided, and the safety performance of the system is improved. And in order to further improve the safety performance of the system, a fuse is connected in series between the common end of the second end of the pre-charging contactor and the second end of the main contactor and the anode of the DC/DC module.

The vehicle controller is a conventional device, is commonly found in fuel-powered vehicles and electric vehicles, is a core control component of the vehicle, plays a role in controlling the vehicle to run, and generally has main functions of driving torque control, optimal control of braking energy, energy management of the whole vehicle, maintenance and management of a CAN (controller area network) network, fault diagnosis and treatment, vehicle state monitoring and the like. In the embodiment, specifically, the vehicle control unit is respectively in communication connection with the power battery system, the hydrogen combustion range extending system 1 and the motor controller through the CAN bus, the electric energy output end of the hydrogen combustion range extending system 1 is respectively connected with the power battery system and the motor controller, and the electric energy output end of the power battery system is connected with the driving motor 5 of the truck through the motor controller so as to provide a power source; the motor controller obtains direct current from the hydrogen-burning range-increasing system 1 and the power battery system under the dispatching of the vehicle controller and outputs the direct current to the driving motor 5. When the truck works, the vehicle control unit serves as a core control component, the power battery system can be controlled to supply power to the driving motor 5 of the truck, the hydrogen-combustion range-extending system 1 can be controlled to supply power to the driving motor 5 when the power battery system is monitored to be insufficient in electric quantity, or the power battery system and the hydrogen-combustion range-extending system 1 are controlled to supply power to the driving motor 5 together, wherein the driving motor 5 is connected with a rear wheel driving shaft of the truck, generally, the vehicle control unit controls whether electric energy is output or not by controlling on and off of contactors or other similar switch components on circuits at electric energy output ends of the power battery system and the hydrogen-combustion range-extending system 1, the specific connection mode is the prior art, and redundant description is not repeated.

The conditions for power source switching are now exemplified: when the battery pack 2 is sufficient in electric quantity (the SOC is more than 85%) during the running process of the truck, the vehicle control unit uses the battery pack 2 to supply power for a vehicle power system; when the electric quantity of the battery pack 2 is insufficient (the SOC is lower than 25-30%), the vehicle controller starts the hydrogen-combustion range-extending system 1 to supply power to a vehicle power system; when the SOC of the battery pack 2 is between 30% and 85%, the power battery system or the hydrogen-combustion range-extending system 1 supplies power, for example, when the output power of the hydrogen-combustion range-extending system 1 is greater than the required power, the surplus electric quantity charges the battery pack 2 under the control of the vehicle control unit; when the required power of the truck is larger than the rated power of the hydrogen-combustion range-extending system 1, the vehicle controller can simultaneously use the battery pack 2 and the hydrogen-combustion range-extending system 1 to supply power to the power system. Of course, the above example is only a power supply strategy that makes the battery pack 2 and the hydrogen-burning range-extending system 1 in a better working state as much as possible, which is beneficial to the overall service life and the energy conversion efficiency, but the present invention does not limit the power supply scheme, and the power supply scheme can be adjusted according to the actual requirement when in use.

Wherein, the specific way of hydrogen-burning range-extending system 1 energy supply is as follows: the hydrogen supplied by the hydrogen supply and storage system 6 passes through the hydrogen filter and then is combusted in the hydrogen-burning engine to do work to generate mechanical energy with the oxygen in the air which is filtered by the air filter and conveyed by the air compressor, and the mechanical energy is converted into electric energy through the generator to supply power. In order to monitor the hydrogen consumption, a gas flow meter can be arranged on a gas pipeline between the hydrogen filter and the hydrogen-burning engine, the gas flow meter is connected with a vehicle control unit, and a pressure reducing valve can be arranged between the hydrogen supply and storage system 6 and the hydrogen filter to control the gas pressure. In practice, the hydrogen-burning range-increasing system 1 is similar to a power generation device, and generates a large amount of heat in the process of charging the battery pack 2 or directly supplying power to the driving motor 5, and when the temperature is too high, the normal operation of the hydrogen-burning range-increasing system 1 is affected.

When the water supply device is used, water in the water replenishing kettle is driven by the heat dissipation water pump to firstly filter impurities through the coolant filter so as to avoid blocking a pipeline, then reaches the first heat exchange pipe through the heat dissipation water pump to dissipate heat of the hydrogen combustion engine and reaches the second heat exchange pipe to dissipate heat of the generator, and then flows into the radiator to dissipate heat, so that the coolant is cooled and returns to the water replenishing kettle to be recycled, the radiator is a heat exchanger and generally comprises three parts, namely a water inlet chamber, a water outlet chamber, a main sheet, a radiator core and the like, the heat of the coolant is mainly dissipated to the outside to cool the coolant, and the heat is not repeated for the conventional device.

However, in the present embodiment, connecting pipes 101 for connection are respectively disposed between the heat sink and the first heat exchange pipe, between the second heat exchange pipe, between the heat sink and the first heat exchange pipe, and between the heat sink and the heat sink, and between the heat sink and the first heat exchange pipe, and between the heat sink and the second heat exchange pipe, wherein the joints of the heat sink, the first heat exchange pipe, the second heat exchange pipe, and the heat sink are all hard pipes, as shown in fig. 6-7, a through hole composed of a communicating portion 102 and mounting portions 103 disposed at two ends of the communicating portion 102 is disposed inside the connecting pipe 101, wherein the diameter of the mounting portion 103 is greater than that of the communicating portion 102, the through hole may be dumbbell-shaped, and certainly, the communicating portion 102 may also be curved, the connecting pipe 101 can be used at a corner, the mounting part 103 is sequentially provided with an auxiliary sealing plate 107, a sealing ring, a limiting disc 104 and a fastening sleeve which are movably connected with the connecting pipe 101 from inside to outside, an elastic sleeve 108 is arranged between the sealing plate and the bottom of the mounting part 103, the elastic sleeve 108 is filled with water-absorbing resin, the elastic sleeve 108 can be made of non-toxic, elastic and water-resistant materials such as elastic rubber, polyolefin elastic fiber or polyester composite elastic fiber, the water-absorbing resin can be conventional water-absorbing resin such as modified high-sodium bentonite particles, sodium acrylate, polyvinyl alcohol and the like, the elastic sleeve 108 is provided with water-permeable holes, the water-absorbing resin can be set to be granular, as long as the diameter of the water-permeable holes is larger than that of the water-permeable holes, namely the water-absorbing resin cannot be separated from the water-permeable holes from the elastic sleeve 108, and a plurality, the end of the elastic claw 112 is inclined toward the direction close to the center line of the connection pipe 101. When the connection is performed, the water-absorbent resin does not absorb water yet, the volume is small, the elasticity of the elastic sleeve 108 is weak, the auxiliary sealing plate 107 cannot cause large extrusion to the sealing ring, taking the first heat exchange tube as an example, the end part of the first heat exchange tube is inserted into the through hole from the opening of the mounting part 103 until the first heat exchange tube cannot be pushed continuously, at this time, the elastic claw 112 is clamped outside the first heat exchange tube, so that the first heat exchange tube cannot be separated from the connecting pipe 101, the sealing ring is contacted with the outer wall of the first heat exchange tube to prevent the leakage of the cooling liquid, after the connection is completed, the water-absorbent resin absorbs water and expands along with the contact of the cooling liquid with the water-absorbent resin through the water-permeable hole, the elastic sleeve 108 is supported, the elasticity of the elastic sleeve 108 is increased, the auxiliary sealing plate 107 automatically moves upwards to increase the extrusion force to the sealing ring, the auxiliary sealing plate 107 can be stably supported, so that the better sealing performance is achieved, the penetration of cooling liquid can be effectively avoided, and the performance of a cooling system is improved. Simultaneously, can also make the sealing washer includes first sealing washer 106 and second sealing washer 105, be provided with the recess on the first sealing washer 106, be provided with on the second sealing washer 105 with the location arch of recess looks adaptation, when the assembly, just can make the protruding card of location go into in the recess for the two can effectively cooperate and support each other tightly and fill the space, effectively promote sealed effect. Meanwhile, a check ring 109 can be arranged between the limiting disc 104 and the sealing ring, and the sealing ring and the limiting disc 104 are separated by the check ring 109, so that the sealing effect is prevented from being influenced by the fact that the sealing ring is damaged when the elastic clamping jaws 112 are opened.

In addition, in order to facilitate the disassembly, the fastening sleeve comprises a sleeve 110 in threaded connection with the connecting pipe 101 and an adjusting sleeve 111 located on the inner side of the sleeve 110, the sleeve 110 abuts against the limiting disc 104 and is used for extruding and positioning components in the through hole, the adjusting sleeve 111 slides back and forth along the sleeve 110, one end of the adjusting sleeve 111 extends to the inner side of the limiting disc 104 to push away an elastic claw 112, namely, protrusions abutting against the end of the sleeve 110 can be arranged at two ends of the adjusting sleeve 111, so that the sleeve 110 cannot be separated from the adjusting sleeve 111, when the disassembly is needed, the adjusting sleeve 111 can be pushed, the elastic claw 112 is propped open by the adjusting sleeve 111, then the connecting pipe 101 can be smoothly separated from the components such as the first heat exchange pipe, and the convenience in operation is greatly improved.

In addition, the existing coolant filter is optimized for the coolant filter in this embodiment, as shown in fig. 8-10, the coolant filter includes a housing 113, a liquid inlet at the top of the housing 113, and a liquid outlet at the bottom of the housing 113, a positioning ring 114 is fixed on the inner wall of the housing 113, a plurality of stoppers 117 slidably connected to the positioning ring 114 are uniformly distributed on the positioning ring 114, a first spring 118 is disposed between the stoppers 117 and the inner wall of the housing 113, a filter assembly is disposed in the housing 113, the filter assembly includes a mounting ring 115 and a first filter screen 120 fixed on the mounting ring 115, a second spring 119 is disposed between the mounting ring 115 and the positioning ring 114, the stopper 117 is provided with a slope on a side close to the mounting ring 115, the slope inclines towards a direction close to the first filter screen 120, the stopper 117 is provided with a first diversion hole 125, the positioning ring 114 is provided with a second diversion hole 124 matched with the first diversion hole 125, and the stopper 117 is pushed to move when the mounting ring 115 is pressed down so that the second diversion hole 124 is communicated with the first diversion hole 125.

During normal use, the coolant can normally pass through first filter screen 120, and impurity is held back on first filter screen 120, regularly clear up first filter screen 120 can, simultaneously, dog 117 can make first water conservancy diversion hole 125 stagger with second water conservancy diversion hole 124 in the effect of first spring 118, the coolant only can pass through from first filter screen 120, can effectively filter, and when first filter screen 120 blocks up the coolant and can not pass through, as temporary emergency, rivers pile up and can push collar 115 on first filter screen 120, make second spring 119 compress, collar 115 promotes dog 117 and moves towards first spring 118, make first water conservancy diversion hole 125 and second water conservancy diversion hole 124 relative, thereby make the coolant liquid still can flow from the liquid outlet, avoid the heat dissipation water pump to damage, and after first filter screen 120 is cleared up clean in the later stage, can resume normal use again. Of course, in order to increase the flow guiding effect of the first flow guiding hole 125 and the second flow guiding hole 124, the stopper 117 is an arc-shaped block, and both the first flow guiding hole 125 and the second flow guiding hole 124 are arc-shaped holes, and the stopper 117 may be 3 or more blocks distributed on the same circumference for flow guiding. In addition, in order to prevent the coolant from flowing out from the connection between the mounting ring 115 and the positioning ring 114, the mounting ring 115 comprises a main body and a connection ring 116 protruding outward from the top of the main body and connected with a second spring 119, a sealing ring, such as a rubber ring, is sleeved outside the main body, the outer side of the sealing ring abuts against the inner side of the positioning ring 114, and meanwhile, the first filter screen 120 can form a filter cavity in an inverted truncated cone shape, and the top opening of the filter cavity is arranged, so that a certain anti-blocking effect can be achieved, and a good drainage effect can be achieved on the coolant.

When the first filter screen 120 is blocked, the coolant flowing out through the second flow guide hole 124 and the first flow guide hole 125 is not effectively filtered, and is easy to carry impurities to perform subsequent components such as a heat dissipation water pump and the like, and adverse effects are caused to the operation of the cooling system, for this reason, in this embodiment, the lower end of the main body is connected with an auxiliary filtering component, the inner wall of the casing 113 is provided with a limiting ring 121 located below the positioning ring 114, the inner diameter of the limiting ring 121 is smaller than the inner diameter of the positioning ring 114, the auxiliary filtering component comprises a lap ring 122 lapped with the top of the limiting ring 121, the bottom of the lap ring 122 is connected with a second filter screen 123, the end of the second filter screen 123 is connected with an annular connecting piece which is wound on the outer side of the first filter screen 120, the annular connecting piece is fixedly connected with the main body, and the main body, the positioning ring 114, the inner wall of, Form supplementary filter chamber between the annular connecting piece, the filter chamber that supplementary filter chamber and first filter screen 120 formed separates completely promptly, when using, if first filter screen 120 blocks up, second filter screen 123 sinks along with first filter screen 120 is synchronous, overlap joint ring 122 meets with spacing ring 121, can seal, prevent that the coolant liquid from leaving from the junction, can play splendid limiting displacement again, prevent that the main part from continuing to sink, thereby make first water conservancy diversion hole 125 just right with second water conservancy diversion hole 124, thereby can filter the coolant liquid through second filter screen 123, can keep not containing the large particle size impurity in the coolant liquid through the coolant liquid filter throughout. Of course, for the convenience of installation and cleaning, a detachable cover plate, such as a threaded connection, may be further disposed on the top of the housing 113, and certainly, the liquid inlet is disposed on the cover plate.

In addition, the hydrogen supply system 6, as a part for providing hydrogen to the combustion hydrogen range extending system 1, includes at least one hydrogen storage bottle, which stores hydrogen by using the hydrogen storage bottle, and releases hydrogen when needed, and as a specific structure of the hydrogen storage bottle, please refer to fig. 11-15, which includes an inner container and an outer shell 604 coated outside the inner container, the inner container includes a plastic sealing liner 601, a carbon fiber reinforced plastic layer 602 and a glass fiber reinforced plastic layer 603, which are sequentially arranged from inside to outside, one end of the inner container is provided with a gas port, the gas port is provided with a valve system for controlling the on-off of the gas port, the valve system includes a main control valve 605 and a connector 606 detachably connected with the main control valve 605, and the main control valve 605 is generally a high pressure solenoid valve, and may also include common sensors, such as pressure, hydrogen element concentration, temperature, ion concentration, etc., there may also be various chips commonly used for hydrogen storage bottles, such as a chip for monitoring gas storage amount and collecting user data, and an SG module, and these components are packaged by using an insulating box body to prevent damage in the using process, which are conventional processing means and will not be described herein any more, the main control valve 605 is described hereinafter by taking a high-pressure electromagnetic valve as an example, wherein the high-pressure electromagnetic valve is also a conventional component that can be purchased directly from the market and will not be described herein any more, the first port of the main control valve 605 is communicated with the liner, the second port is communicated with the outside, the hydrogen storage bottle can be inflated or deflated by controlling the on-off of the main control valve 605 without setting separate gas inlet and gas outlet, the processing is more convenient, the number of joints is reduced, the sealing performance is further improved, and the liner uses a plastic sealing liner 601, can adopt the mode direct molding of blowing, carbon fiber reinforced plastic layer 602 sets up at the inner bag surface outward, and glass fiber reinforced plastic layer 603 sets up the surface messenger at carbon fiber reinforced plastic layer 602, and the cost that gets hydrogen storage bottle reduces by a wide margin, and recoverability also is better than traditional metal inner bag hydrogen storage bottle. As a specific embodiment of the housing 604, the housing 604 includes an aluminum alloy layer, an asbestos mesh layer, and a PVC material layer, which are sequentially disposed from inside to outside, so that the housing 604 can further enhance the pressure resistance and flame retardant capability of the hydrogen storage bottle, effectively protect the inner container, and improve the safety performance of use, wherein the inner container can be the same as the existing bottle, the housing 604 is disposed outside the inner container in a cylindrical shape, the main control valve 605 is also protected inside the housing 604, and certainly, in order to facilitate clamping of the hydrogen storage bottle during transportation, annular clamping grooves can be disposed at two ends of the housing 604 for clamping.

Wherein, the hydrogen storage bottle is provided with a main control valve 605 and a connector 606 detachably connected with the main control valve 605, the connector 606 can be fixed on the mounting rack 8 for installing a gas pipeline to connect with the hydrogen-burning engine so as to transport the hydrogen in the hydrogen storage bottle to the hydrogen-burning engine for use, specifically, please refer to fig. 16 and 17, the mounting rack 8 is provided with at least one positioning groove 801 for placing the hydrogen storage bottle therein, two sides of the positioning groove 801 are provided with a separating member, the bottom of the positioning groove 801 is provided with a mounting port for placing or leaving the hydrogen storage bottle, since the hydrogen storage system 6 is arranged on the frame 9, a carriage is further arranged on the positioning groove, it is very inconvenient to place or take the hydrogen storage bottle from above, therefore, the mounting port is arranged below the positioning groove 801, the hydrogen storage bottle can be placed into or taken out from the bottom of the truck, and the separating member separates the hydrogen storage bottle 8 into one positioning groove 801 for placing the hydrogen storage bottle, the specific number of the positioning grooves 801 can be set according to the actual use requirement of the truck, for example, 3 positioning grooves are arranged, the top of each positioning groove 801 is provided with an arc-shaped cover plate 805, the arc-shaped cover plate 805 is connected with a separating piece to position the hydrogen storage bottle, the hydrogen storage bottle is placed into the positioning groove 801 from an installation opening below the positioning groove 801, the placing height of the hydrogen storage bottle is limited by the arc-shaped cover plate 805, two ends of each positioning groove 801 are also provided with brackets 803, the brackets 803 are connected with the separating piece in a sliding manner, each bracket 803 comprises a bottom bracket in contact with the hydrogen storage bottle, the brackets 803 are connected with a first driving device for driving the brackets 803 to move, namely when the hydrogen storage bottle needs to be placed, the first driving device is used for moving 2 brackets 803 along the separating piece in the direction away from each other so as to leave enough space for placing the hydrogen storage bottle, then the hydrogen, then, the bracket 803 is moved by a driving device, so that 2 brackets 803 move towards the direction of approaching each other, and the base supports the two ends of the hydrogen storage bottle, so that the hydrogen storage bottle is limited between the bracket 803 and the arc-shaped cover plate 805 for fixing; meanwhile, a connecting support 806 is further arranged on a bracket 803 at the end of the positioning groove 801 corresponding to the main control valve 605 of the hydrogen storage bottle, the connector 606 is fixed on the connecting support 806, the connecting support 806 can slide on the bracket 803, the connecting support 806 is connected with a second driving device 807, and the second driving device 807 drives the connecting support 806 to move, so that the connector 606 is connected with or separated from the main control valve 605, a sliding rail 811 can be arranged on the bracket 803, a guide block is arranged on the connecting support 806, and the guide block is positioned in the sliding rail 811 to limit the moving direction of the connecting support 806.

Particularly, the second port department of main control valve 605 is provided with the auxiliary seal piece 607 with second port sealing connection, can set up the sealing member of similar rubber ring at the two junction and seal, auxiliary seal piece 607 is kept away from second port one end and is provided with the air cock of evagination, be provided with on the connection head 606 with air cock complex spread groove, of course, also can set up the sealing member of similar rubber ring class in the spread groove and seal, be provided with a cross connection on the connection head 606 and refute the first gas transmission passageway of head 606 and extend to the connection groove bottom, this gas transmission passageway is connected in order to carry hydrogen to the engine through pipeline and burning hydrogen engine, and such mode of setting makes connection head 606 can be connected with main control valve 605 fast, promotes the stability of connecting simultaneously.

Further, a second gas transmission channel penetrating through the auxiliary sealing piece 607 is arranged in the middle of the gas nozzle, the second gas transmission channel comprises a first transition section 610 and a second transition section 612 which are communicated with each other, the diameter of the first transition section 610 is larger than that of the second transition section 612, a first installation section 609 communicated with the first transition section 610 is concavely arranged at the second port of the main control valve 605, the first gas transmission channel comprises a third transition section 613 connected with the second transition section 612 and a fourth transition section 614 communicated with the third transition section 613, the diameter of the third transition section 613 is smaller than that of the fourth transition section 614, an end groove communicated with the fourth transition section 614 is arranged at the end of the connection head, an installation end piece 608 is connected in the end groove in a sealing manner, when in specific connection, a sealing piece similar to a rubber ring can be arranged in the end groove for sealing, an auxiliary gas channel penetrating through the installation end 608 and communicated with the fourth transition section 614 is arranged in the middle of the installation end 608 616, the hydrogen can be delivered to the hydrogen-burning engine by connecting a pipeline 101 at the outlet of the auxiliary air channel 616 of the mounting head 608, the connecting side of the mounting head 608 and the fourth transition section 614 is concavely provided with a second mounting section 615, the bottoms of the first mounting section 609 and the second mounting section 615 are both provided with a connecting seat 617, the connecting seat 617 is provided with a connecting rod 618 extending into the fourth transition section 614/the second transition section 612, the connecting rod 618 is provided with a sliding groove 620 extending along the length direction of the connecting rod 618, the sliding groove 620 is internally connected with a push rod 619 in a sliding way, the push rod 619 is provided with a blocking plug 622 tightly abutted against the joint between the first transition section 610 and the second transition section 612/the joint between the third transition section 613 and the fourth transition section 614, an auxiliary spring 621 sleeved outside the connecting rod 618 and the push rod 619 is arranged between the blocking plug 622 and the connecting seat 617, one end of a push rod 619 in the air tap, which is far away from the connecting rod 618, penetrates through a sealing plug 622 and extends into the first transition section 610, one end of the push rod 619 in the connector 606, which is far away from the connecting rod 618, penetrates through the third transition section 613 and extends into the connecting groove, when the connector 606 is connected with the air tap, the end of the push rod 619 in the connector 606 extends into the first transition section 610 and abuts against the push rod 619 in the air tap, the sectional dimension of the sealing plug 622 is slightly smaller than the sectional dimensions of the first transition section 610 and the fourth transition section 614, so that gas can normally pass through, the sectional dimension of the push rod 619 is also smaller than the sectional dimensions of the second transition section 612 and the third transition section 613, so that gas can pass through, and meanwhile, the sectional dimension of the connecting seat 617 also needs to be smaller than the sectional dimensions of the first installation section 609 and the second installation section 615. That is, in use, if the connection head 606 is not connected to the air faucet, or is not completely connected to the air faucet, the plugging plug 622 may plug the end of the first transition section 610, so that hydrogen cannot leave the air faucet, and the plugging plug may cooperate with the main control valve 605 to achieve a better double-layer sealing effect, and when the air faucet is completely inserted into the connection slot on the connection head 606, since the end of the push rod 619 installed in the connection head 606 extends into the connection slot, it may be inserted into the second transition section 612 along with the contact between the connection slot and the air faucet, so as to contact with the push rod 619 in the air faucet, and the two push each other, so that the plugging plug 622 in the first transition section 610 retracts back towards the main control valve 605, hydrogen may enter the second transition section 612 through the gap between the plugging plug 622 and the first transition section 610, and then enter the third transition section 613, at this time, since the plugging plug 622 in the connection head 606 also retracts towards the fourth transition section 614, the hydrogen gas may also directly pass through the gap between the plug 622 and the fourth transition section 614 to enter the fourth transition section 614, and finally leave the connector 606 through the auxiliary air passage 616, and then reach the hydrogen-burning engine for use. In order to avoid that the connecting seat 617 affects the normal passing of the gas, of course, a circular truncated cone may be disposed at one end of the connecting seat 617, which is away from the connecting rod 618, the end with a small cross section is located at the extreme end of the connecting seat 617, a cross groove 623 is disposed at the end, four outlets of the cross groove 623 extend to the end of the circular truncated cone, the diameter of the connecting seat 617 is smaller than the inner diameters of the first mounting section 609 and the second mounting section 615, the cross sections of the first mounting section 609 and the first transition section 610 may be the same, the cross sections of the second mounting section 615 and the fourth transition section 614 are the same, the gas outlet of the second port of the main control valve 605 and the end of the auxiliary gas duct 616 are opposite to the cross groove 623, and the gas may pass through the. Meanwhile, an annular slope is arranged on the edge of one end, away from the connecting rod 618, of the sealing plug 622, the diameter of the annular slope is gradually reduced along the direction away from the connecting rod 618, the shapes of the end portions of the fourth transition section 614 and the first transition section 610 are matched with the annular slope, namely the end portion of the sealing plug 622 is similar to a circular truncated cone shape, the sealing performance between the sealing plug 622 and the first transition section 610 and the sealing plug 613 can be effectively improved, and a plurality of balls are arranged on the annular slope, so that the friction force for moving the sealing plug 622 is smaller and the movement is easier during use.

As a specific embodiment of the first driving device 807 and the second driving device 807, the first driving device may be a conventional driving mode such as a telescopic electric cylinder, a hydraulic cylinder, etc., and for the first driving device, in order to make the moving distance easier to control, so as to adapt to hydrogen storage bottles of different sizes, the partition is a guide rail 802, through holes for the guide rail 802 to pass through are arranged on both sides of the bracket 803, and the guide rail 802 is slidably connected with the partition, the first driving device includes a screw rod 808 parallel to the guide rail 802, a first motor 804 driving the screw rod 808 to rotate, and a sliding seat 809 fixedly connected with the bracket 803, the sliding seat 809 is in threaded connection with the screw rod 808, the screw rod 808 is rotatably connected with the mounting bracket 8, the first motor 804 is fixed on the mounting bracket 8, the first motor 804 is connected with the vehicle controller, when in use, the rotating direction of the screw rod 808 can be directly controlled by the forward and backward rotation of the motor, and when the screw rod 808 rotates, the bracket 803 is limited by 2 guide rails 802, so that the bracket 803 can only reciprocate along the sliding rail 811 along with the rotation of the screw rod 808 without rotating, and it should be understood here that each of two sides of each positioning groove 801 has a separate partition, for example, two adjacent positioning grooves 801, and there should be 2 partitions on the adjacent side, and certainly, the second driving device 807 is controlled by the screw rod 808 as the first driving device, i.e., a guide rod is arranged on the bracket 803, so that the connecting bracket 806 is slidably connected with the guide rod, and the other side of the second driving device is in threaded connection with the screw rod 808, otherwise, a slider is arranged separately to be in threaded connection with the screw rod 808, and then a second motor driving the screw rod 808 to rotate is mounted on the bracket 803, so that the second motor is also connected with the vehicle controller.

And in order to further promote the spacing effect to the hydrogen storage bottle, the collet is arc-shaped with hydrogen storage bottle contact one side, bracket 803 still includes the side shield with collet fixed connection, the side shield offsets with hydrogen storage bottle terminal surface to all carry out effective spacing to the hydrogen storage bottle to four directions, prevent that hydrogen storage bottle from taking place the displacement. Meanwhile, in order to facilitate assembly and maintenance, please refer to fig. 18, the two sides of the arc-shaped cover plate 805 are provided with connecting plates 810, the connecting plates 810 are fixedly connected with the separating members, the arc-shaped cover plate 805 is detachably connected with the connecting plates 810, when in installation, other components can be installed first, and finally the arc-shaped cover plate 805 is installed, and when in maintenance, the arc-shaped cover plate 805 can be opened for maintenance, however, in such an arrangement manner, according to different models, the positioning grooves 801 can be selected to be arranged in a vertical relation or on the same horizontal plane, when in a vertical relation, when a hydrogen storage bottle is placed, the lower arc-shaped cover plate 805 is opened first, the hydrogen storage bottle is placed into the uppermost positioning groove 801 from the installation opening of the lowermost positioning groove 801, when being taken out, the operation is performed in an opposite order, and in order to meet the fixing requirements of hydrogen storage bottles with different sizes, the stability of fixing the hydrogen storage bottle is improved, the hydrogen storage bottle is well protected, an arc-shaped pressing plate 812 is arranged on one side, close to the hydrogen storage bottle, of the arc-shaped cover plate 805, an extrusion spring 813 is arranged on the support of the arc-shaped pressing plate 812 and the arc-shaped cover plate 805, and meanwhile, a rubber pad is arranged on one side, connected with the hydrogen storage bottle, of the arc-shaped pressing plate 812 and the bracket 803 so as to buffer the hydrogen storage bottle when the hydrogen storage bottle is stressed and protect the hydrogen storage bottle.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. A hydrogen-burning range-extending type electric truck comprises a frame (9), a cab (10) and a cargo compartment (11) which are arranged on the frame (9), and is characterized in that the frame (9) is further provided with an electric control system (3), a power battery system, a driving motor (5), a hydrogen-burning range-extending system (1) and a hydrogen supply and storage system (6), the electric control system (3) comprises a vehicle control unit, a battery management system BMS (4) and a motor controller which are in communication connection with the vehicle control unit, the electric control system (3) is also in communication connection with the power battery system, the driving motor (5) and the hydrogen-burning range-extending system (1), the electric energy output end of the power battery system is connected with the driving motor (5) through the motor controller, and the hydrogen supply and storage system (6) provides hydrogen for the hydrogen-burning range-extending system (1);

a DC/DC module is arranged between the electric energy output end of the hydrogen-burning range-increasing system (1) and the electric energy input end of the power battery system, and a pre-charging control circuit is arranged between the DC/DC module and the power battery system;

2. The hydrogen-fired range-extended electric truck according to claim 1, wherein a fuse is connected in series between a common terminal of the second terminal of the pre-charging contactor and the second terminal of the main contactor and the positive electrode of the DC/DC module.

3. The hydrogen-burning stroke-increasing electric truck as claimed in claim 2, wherein the power battery system comprises a battery pack (2) and a temperature control system, the battery pack (2) and the temperature control system are both connected with a battery management system BMS (4), the DC/DC module is connected with the battery pack (2), the hydrogen-burning stroke-increasing system (1) comprises a generator connected with the DC/DC module and a hydrogen-burning engine connected with the generator, and the hydrogen-burning engine is connected with an air compressor and a hydrogen supply and storage system (6).

4. The hydrogen-burning extended-range electric truck as claimed in claim 3, wherein an air filter is connected to an air inlet of the air compressor, a pressure reducing valve, a hydrogen filter and a gas flow meter are sequentially connected between the hydrogen supply and storage system (6) and the hydrogen-burning engine, and the gas flow meter is connected with the vehicle control unit.

5. The hydrogen-burning extended-range electric truck as claimed in claim 4, wherein the hydrogen-burning extended-range system (1) further comprises a cooling system for dissipating heat of the hydrogen-burning engine, the cooling system comprises a water replenishing kettle, a coolant filter, a heat dissipation water pump, a first heat exchange pipe and a radiator which are sequentially connected, a water outlet end of the radiator is communicated with the water replenishing kettle to form a circulating water path, the first heat exchange pipe dissipates heat of the hydrogen-burning engine, and a second heat exchange pipe for dissipating heat of the generator is further arranged between the heat dissipation water pump and the radiator.

6. The hydrogen-burning extended range electric truck as recited in claim 5, wherein the coolant filter comprises a housing (113), a liquid inlet at the top of the housing (113), and a liquid outlet at the bottom of the housing (113), a positioning ring (114) is fixed on the inner wall of the housing (113), a plurality of stoppers (117) slidably connected with the positioning ring (114) are uniformly distributed on the positioning ring (114), a first spring (118) is arranged between the stopper (117) and the inner wall of the housing (113), a filter assembly is arranged in the housing (113), the filter assembly comprises a mounting ring (115) and a first filter screen (120) fixed on the mounting ring (115), a second spring (119) is arranged between the mounting ring (115) and the positioning ring (114), a slope is arranged at one side of the stopper (117) close to the mounting ring (115), and inclines towards the direction close to the first filter screen (120), the stop block (117) is provided with a first flow guide hole (125), the positioning ring (114) is provided with a second flow guide hole (124) matched with the first flow guide hole (125), and the mounting ring (115) pushes the stop block (117) to move when pressed down so as to enable the second flow guide hole (124) to be communicated with the first flow guide hole (125).

7. The hydrogen-burning stroke-increasing electric truck as claimed in claim 6, wherein the hydrogen-burning stroke-increasing system (1) is located below a cab (10), wherein a mounting rack (8) fixed on a frame (9) is arranged behind the cab (10), the hydrogen supply and storage system (6) is fixed on the mounting rack (8), an inner concave part matched with the mounting rack (8) is arranged at the bottom of the cargo compartment (11), the battery packs (2) are provided with 2 groups and respectively mounted at the left side and the right side of the frame (9), the battery packs (2) are located in the middle of the frame (9), the electric control system, the battery management system BMS (4) and the motor control system are mounted above the battery packs (2), and the driving motor (5) is mounted at one side of a rear axle of the frame (9) far away from the power battery system.

8. The fuel hydrogen extended range electric truck of claim 7, characterized in that, supply hydrogen storage system (6) to include at least one hydrogen storage bottle, the hydrogen storage bottle is fixed on mounting bracket (8), the hydrogen storage bottle includes inner bag and cladding shell (604) outside the inner bag, the inner bag includes sealed inside lining of plastics (601), carbon fiber reinforced plastic layer (602) and glass fiber reinforced plastic layer (603) that set gradually from interior to exterior, inner bag one end is provided with the gas port, gas port department is provided with the valve system of control gas port break-make, valve system includes main control valve (605) and refutes head (606) of being connected with main control valve (605) can dismantle, refute head (606) and install on mounting bracket (8), and refute head (606) are carried the hydrogen of hydrogen storage bottle for the fuel hydrogen engine through the pipeline.