Firefighting vehicle hybrid power system, and firefighting vehicle

Abstract

The present disclosure relates to a firefighting vehicle hybrid power system, and a firefighting vehicle. The firefighting vehicle hybrid power system comprises: an electricity consumption module (1), comprising a first electric drive assembly (10) and a first electric drive component (11); an electricity supply module (2) configured to provide electrical energy to the electricity consumption module (1), the electricity supply module (2) comprising a range extender (21) and a power battery (22), wherein the range extender (21) is configured to provide electrical energy to the power battery (22); a power distribution unit (3), configured to distribute electrical energy from the electricity supply module (2) to the electricity consumption module (1); and a controller, configured to enable both the range extender (21) and the power battery (22) to directly provide electrical energy to the electricity consumption module (1) when the power demand of the entire firefighting vehicle is greater than a preset power, and to enable only the power battery (22) to directly provide electrical energy to the electricity consumption module (1) when the power demand of the entire firefighting vehicle is not greater than the preset power.

Description

Fire truck hybrid power system and fire truck

[0001] Horizontal citation of related applications

[0002] This disclosure is based on and claims priority to Chinese application No. 202510709367.9, filed on May 29, 2025, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] This disclosure relates to a fire truck hybrid power system and a fire truck. Background Technology

[0004] Traditional internal combustion engine-driven airport fire trucks are no longer able to meet the requirements of my country's electrification era in terms of acceleration and fuel emissions. Currently, both domestic and foreign manufacturers have begun to develop new energy airport fire and rescue equipment, and new energy airport fire trucks have become an industry trend.

[0005] Currently, the range-extended hybrid systems of new energy airport fire trucks on the market use a power battery and drive motor for chassis driving, while the fire-fighting operation of the superstructure uses an engine drive and fire pump. The chassis driving and the fire-fighting operation of the superstructure are driven and controlled separately. The fuel and electric power systems cannot be coupled to form a driving force, resulting in insufficient continuous acceleration performance of the whole machine under heavy load conditions such as rapid acceleration from start-up and fire-fighting while driving. The flow control of the superstructure fire-fighting operation of airport fire trucks in different scenarios must be provided by the engine power, which is economical, environmentally friendly and inefficient. Summary of the Invention

[0006] The embodiments of this disclosure provide a fire truck hybrid power system and a fire truck that can improve the adaptability of the fire truck to high-power firefighting operation scenarios.

[0007] According to one aspect of this disclosure, a fire truck hybrid power system is proposed, comprising:

[0008] The power module includes a first electric drive assembly and a first electric drive component. The first electric drive assembly is configured to drive the chassis to travel, and the first electric drive component is configured to drive the upper structure for fire fighting operations.

[0009] The power supply module is configured to provide electrical energy to the power consumption module. The power supply module includes a range extender and a power battery. The range extender is configured to provide electrical energy to the power battery.

[0010] A high-voltage distribution unit, connected between the power supply module and the power consumption module, is configured to distribute electrical energy from the power supply module to the power consumption module; and

[0011] The controller is configured to allow both the range extender and the power battery to directly supply power to the power module when the power demand of the fire truck exceeds the preset power, and to allow only the power battery to directly supply power to the power module when the power demand of the fire truck does not exceed the preset power.

[0012] In some embodiments, the power module further includes a second electric drive component configured to drive the hydraulic pump of the fire truck.

[0013] In some embodiments, the first electric drive assembly includes a front electric drive unit and a rear electric drive unit, the front electric drive unit being configured to provide driving force to the front axle and the rear electric drive unit being configured to provide driving force to the through axle and the rear axle.

[0014] According to another aspect of this disclosure, a fire truck is proposed, including the fire truck hybrid power system of the above embodiment. The fire truck includes a fire pump, which includes a pump impeller and a first electric drive component. The output shaft of the first electric drive component is longer than a preset length, and the pump impeller is directly connected to the output shaft to form an integrated electric drive pump.

[0015] In some embodiments, the fire truck further includes a roof-mounted monitor connected to the boom and a first hydraulic slewing reducer, the first hydraulic slewing reducer being configured to drive the roof-mounted monitor to pitch, and the pitch angle range of the roof-mounted monitor from a horizontal state includes -90° to 90°.

[0016] In some embodiments, the fire truck further includes a piercing system connected to the boom, the piercing system including a piercing cannon and a hydraulic cylinder equipped with an accumulator, the piercing cannon being configured to penetrate an obstacle and spray extinguishing agent, the hydraulic cylinder being configured to drive the piercing cannon to extend and retract, the accumulator being configured to release energy instantaneously to drive the piercing cannon to eject and extend, the piercing cannon being provided with a nozzle for spraying extinguishing agent and the piercing cannon being configured to spray extinguishing agent only when in the extended state.

[0017] In some embodiments, the piercing system further includes a second hydraulic rotary reducer configured to drive the piercing gun in pitch motion, and the pitch angle of the piercing gun from a horizontal position ranges from -90° to 90°.

[0018] In some embodiments, the fire truck further includes a display and a fire extinguishing agent delivery system, the display being configured to receive user input, and the fire extinguishing agent delivery system including:

[0019] A liquid storage container includes a first container and a second container, wherein the first container is used to store water and the second container is used to store foam;

[0020] Powder storage containers and gas storage containers; the powder storage containers are used to store dry powder, and the gas storage containers are used to store nitrogen. The powder storage containers and gas storage containers are connected by gas pipes and controlled by a valve assembly; and

[0021] The extinguishing agent spraying terminal is connected to a liquid storage container via a liquid delivery pipeline and / or to a powder storage container via a dry powder delivery pipeline. The extinguishing agent spraying terminal is configured to spray extinguishing agent, which includes at least one of water, foam and dry powder. The extinguishing agent spraying terminal includes at least one of a puncture cannon, a roof cannon, a front cannon, a water hose reel, a dry powder hose reel, an upper vehicle spray nozzle and an lower vehicle spray nozzle.

[0022] The controller is configured to control the operating status of the extinguishing agent delivery system based on user input. The operating status includes at least one of the following: the fire extinguisher spray terminal spraying extinguishing agent, the fire extinguishing agent spray terminal stopping spraying extinguishing agent, the extinguishing agent delivery system self-cleaning, and the discharge of residual extinguishing agent.

[0023] In some embodiments, the user input includes a first execution command and a first termination command for the extinguishing agent being water. The controller is configured to sequentially open the water intake control valve, the fire pump, and the electrically controlled flow valve upon receiving the first execution command, so that the extinguishing agent spraying terminal sprays water. The electrically controlled flow valve is configured to control the outflow rate of the extinguishing agent spraying terminal. The controller is also configured to sequentially close the electrically controlled flow valve, the fire pump, and the water intake control valve upon receiving the first termination command, so that the extinguishing agent spraying terminal stops spraying water.

[0024] In some embodiments, user input includes a second execution command and a second termination command for the extinguishing agent being foam. The controller is configured to open the foam control valve assembly upon receiving the first execution command and the second execution command in sequence, and the controller is also configured to close the foam valve assembly upon receiving the second termination command.

[0025] In some embodiments, the controller is configured to adjust the foam ratio based on user input.

[0026] In some embodiments, user input includes a foam cleaning command, and the controller is configured to open the foam flushing control valve upon receiving the foam cleaning command.

[0027] In some embodiments, user input includes a drain water command, and the controller is configured to open the drain control valve and the electrically controlled flow valve upon receiving the drain water command.

[0028] In some embodiments, the user input includes a third execution command and a third termination command indicating that the extinguishing agent is dry powder. The controller is configured to, upon receiving the third execution command, sequentially open the dry powder high-pressure control valve, open the dry powder air intake control valve, and open the forward adjustment switching valve. The switching valve is configured to, during forward switching, block the liquid delivery pipeline and open the dry powder delivery pipeline so that the extinguishing agent injection terminal can inject dry powder. The controller is also configured to, upon receiving the third termination command, sequentially reverse the adjustment switching valve, close the dry powder air intake control valve, and close the dry powder high-pressure control valve.

[0029] In some embodiments, user input includes a dry powder removal command, and the controller is configured to open the purge control valve upon receiving the dry powder removal command.

[0030] In some embodiments, the user input includes a venting command, and the controller is configured to open the exhaust control valve of the powder storage container and the venting control valve of the dry powder delivery pipeline upon receiving the venting command.

[0031] Based on the above technical solution, in the fire truck of this disclosure embodiment, both the range extender and the power battery participate in providing power output when there is a high power demand, which can ensure the peak power demand and meet the high power demand such as rapid acceleration when starting, continuous high power acceleration or fire extinguishing while driving; when there is a low power demand, only the power battery provides power, which can reduce the running time of the range extender and reduce fuel consumption and noise. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0033] Figure 1 is a schematic diagram of some embodiments of the fire truck hybrid power system disclosed herein.

[0034] Figure 2 is a first-view structural schematic diagram of some embodiments of the fire truck disclosed herein.

[0035] Figure 3 is a partial structural schematic diagram of some embodiments of the fire truck disclosed herein.

[0036] Figure 4 is a structural schematic diagram of some embodiments of the fire pump disclosed herein.

[0037] Figure 5 is a structural schematic diagram of some embodiments of the roof-mounted cannon of the fire truck disclosed herein.

[0038] Figure 6 is a structural schematic diagram from a second perspective of some embodiments of the fire truck disclosed herein.

[0039] Explanation of reference numerals in the attached diagram: 1. Electrical module; 2. Power supply module; 3. High-voltage distribution unit; 4. Fire pump; 5. Boom; 6. Penetration system; 7. Display; 8. Extinguishing agent delivery system; 9. Turntable; 10. First electric drive assembly; 11. First electric drive component; 12. Second electric drive component; 13. Auxiliary electrical components; 100. Output shaft; 110. Front electric drive unit; 111. Front axle; 120. Rear electric drive unit; 101. Roof sprayer; 102. Piercing sprayer; 60. Hydraulic cylinder; 103. Front sprayer; 104. Water reel; 105. Dry powder reel; 106. Upper vehicle spray nozzle; 107. Lower vehicle spray nozzle; 121. Through axle; 122. Rear axle; 21. Range extender; 22. Power battery; 40. Water pump impeller; 51. First hydraulic rotary reducer; 52. Second hydraulic rotary reducer; 81. Liquid storage container; 82. Powder storage container; 83. Gas storage container; 84. Dry powder conveying pipeline; 85. Switching valve; 86. Liquid conveying pipeline. Detailed Implementation

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0041] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0042] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0043] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0044] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0045] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0046] During the research process, the inventors discovered that the relevant technology uses a diesel engine to drive a generator to charge the energy storage system. The energy storage system uses a power battery to provide power for a short duration, which cannot meet the requirements of continuous high power output and has insufficient acceleration performance. The power of the fire pump and the chassis driving conflict, making it impossible to achieve high acceleration while extinguishing fires at full power.

[0047] To address the aforementioned problems, this disclosure first provides a fire truck hybrid power system, as shown in Figure 1. The hybrid power system includes:

[0048] The power module 1 includes a first electric drive assembly 10 and a first electric drive component 11. The first electric drive assembly 10 is configured to drive the chassis to travel, and the first electric drive component 11 is configured to drive the upper structure for fire fighting operations.

[0049] The power supply module 2 is configured to provide power to the power consumption module 1. The power supply module 2 includes a range extender 21 and a power battery 22. The range extender 21 is configured to provide power to the power battery 22.

[0050] High-voltage distribution unit 3, connected between power supply module 2 and power consumption module 1, is configured to distribute electrical energy from power supply module 2 to power consumption module 1; and

[0051] The controller is configured to allow both the range extender 21 and the power battery 22 to directly supply power to the power module 1 when the power demand of the fire truck is greater than the preset power, and to allow only the power battery 22 to directly supply power to the power module 1 when the power demand of the fire truck is not greater than the preset power.

[0052] Specifically, the range extender 21 only starts charging when the battery charge reaches a set value, and is not constantly in operation. The high-voltage distribution unit 3 (Power Distribution Unit, PDU), also known as the high-voltage power distribution box, supplies power to the range extender 21 and the power battery 22 independently. It can supply power individually or simultaneously. The PDU supplies power to the motors or motor controllers of each electrical module according to the vehicle control unit (VCU) to drive the motors.

[0053] Specifically, when the fire truck's overall power demand is low, it is driven solely by the battery to improve economy. During rapid acceleration from a standstill, the range extender 21 intervenes when the battery power is insufficient to compensate for peak power, overcoming the short-term discharge (≤60 seconds) defect of traditional power-type batteries and supporting continuous full-power output for 2-3 minutes. The fire truck is primarily driven by the power battery 22, and the fire pump is driven by the electrical module 1 when the vehicle is on the move for firefighting. Full-power firefighting operations can also be achieved while the vehicle is in motion.

[0054] Optionally, the first electric drive component 11 may be a fire pump motor, etc.

[0055] In this embodiment, when the fire truck has high power demand, both the range extender 21 and the power battery 22 participate in providing power output, which can ensure the peak power demand and meet the high power demand such as rapid acceleration when starting, continuous high power acceleration, or fire fighting while driving. When the power demand is low, only the power battery 22 supplies power, which can reduce the operating time of the range extender 21 and reduce fuel consumption and noise.

[0056] In some embodiments, as shown in FIG1, the power module 1 further includes a second electric drive component 12, which is configured to drive the hydraulic oil pump of the fire truck.

[0057] Optionally, the power module 1 may also include auxiliary electrical appliances 13.

[0058] In this embodiment, when the second electric drive component 12 or auxiliary electrical appliance 13 has a high power demand, both the range extender 21 and the power battery 22 participate in providing power output, which can ensure the peak power demand.

[0059] In some embodiments, as shown in FIG1, the first electric drive assembly 10 includes a front electric drive unit 110 and a rear electric drive unit 120. The front electric drive unit 110 is configured to provide driving force to the front axle 111, and the rear electric drive unit 120 is configured to provide driving force to the through axle 121 and the rear axle 122.

[0060] Specifically, the front axle 111, the through axle 121, and the rear axle 122 are all connected to two wheels, meaning the fire truck can be a 6×6 airport fire truck.

[0061] This embodiment, by splitting the first electric drive assembly 10 into a front electric drive unit 110 (driving the front axle 111) and a rear electric drive unit 120 (driving the through axle 121 and the rear axle 122), enables the fire truck to adapt to complex terrain, improve its ability to get out of trouble and its driving stability, and optimize the fire truck's driving performance and scene adaptability.

[0062] In related technologies, fire pumps are mechanically driven by engines and drive shafts. The fire pumps draw power from the chassis, resulting in long transmission chains and low transmission efficiency.

[0063] To address the aforementioned issues, this disclosure provides a fire truck, as shown in Figures 2 to 6, which includes a fire truck hybrid power system as described in the above embodiments. The fire truck includes a fire pump 4, which includes a pump impeller 40 and a first electric drive component 11. The output shaft 100 of the first electric drive component 11 is longer than a preset length, and the pump impeller 40 is directly connected to the output shaft 100 to form an integrated electric drive pump.

[0064] The fire truck in this embodiment extends the motor shaft that drives the fire pump 4, and the pump impeller 40 can be directly connected to the motor output shaft 100 to form an electric integrated pump. This reduces the size of the fire pump 4 and optimizes the transmission chain to improve transmission efficiency. The high-efficiency, high-flow integrated fire pump 4 is driven by a motor. Electric drive can solve the problem of providing power without relying on the engine speed to change constantly when the flow demand changes during fire fighting, thus saving energy and reducing emissions.

[0065] In related technologies, the left-right swing and up-down pitch of the roof-mounted cannon are controlled by a worm gear motor, and the pitch of the piercing mechanism is controlled by a swing motor. The follow-up control of the front cannon and the piercing mechanism is complex, resulting in a small swing range during the pitching process of the roof-mounted cannon, which limits the fire extinguishing efficiency.

[0066] In some embodiments, as shown in FIG6, the fire truck further includes a roof-mounted cannon 101 connected to the boom 5 and a first hydraulic rotary reducer 51, the first hydraulic rotary reducer 51 being configured to drive the roof-mounted cannon 101 to pitch, and the pitch angle range of the roof-mounted cannon 101 from the horizontal state includes -90° to 90°.

[0067] Specifically, the boom 5 is connected to the vehicle body via the turntable 9, and the roof gun 101 is connected to the free end of the boom 5.

[0068] In addition to its own horizontal swing and pitch, the first hydraulic rotary reducer 51 of the roof-mounted cannon 101 in this embodiment can also drive the pitch movement of the roof-mounted cannon 101 to expand the coverage of firefighting work, work without blind spots, improve the efficiency of firefighting work, and achieve rapid rescue.

[0069] In some embodiments, as shown in Figures 2 to 6, the fire truck further includes a piercing system 6 connected to the boom 5. The piercing system 6 includes a piercing cannon 102 and a hydraulic cylinder 60 equipped with an accumulator. The piercing cannon 102 is configured to penetrate obstacles and spray extinguishing agent. The hydraulic cylinder 60 is configured to drive the piercing cannon 102 to extend and retract. The accumulator is configured to release energy instantaneously to drive the piercing cannon 102 to eject and extend. The piercing cannon 102 is equipped with a nozzle for spraying extinguishing agent and is configured to spray extinguishing agent only when it is in the extended state.

[0070] Specifically, the piercing system is also connected to the free end of the boom 5, with the roof-mounted cannon 101 and the piercing cannon 102 spaced apart horizontally and vertically. Specifically, the piercing cannon 102, also known as a piercing needle, is capable of piercing obstacles such as aircraft cabin walls. Specifically, the roof-mounted cannon 101 and the piercing cannon 102 are controlled by a pre-action mechanism, meaning that when one operates, the other is pre-controlled to prevent interference.

[0071] This embodiment improves the fire truck's ability to quickly breach obstacles and accurately extinguish fires by integrating the puncture system 6; the puncture cannon 102 sprays extinguishing agent only when it is in the extended state, which can avoid accidental triggering or waste of extinguishing agent; the roof cannon 101 and the puncture system 6 are controlled by electro-hydraulic fusion, which ensures high reliability.

[0072] In some embodiments, as shown in FIG6, the piercing system 6 further includes a second hydraulic rotary reducer 52, which is configured to drive the piercing gun 102 to pitch, and the pitch angle range of the piercing gun 102 from the horizontal state includes -90° to 90°.

[0073] The second hydraulic rotary reducer 52 in this embodiment can additionally drive the piercing cannon 102 to pitch and roll, thereby expanding the coverage of firefighting operations, enabling work without blind spots, improving firefighting efficiency, and achieving rapid rescue.

[0074] In some embodiments, as shown in FIG2, the fire truck further includes a display 7 and a fire extinguishing agent delivery system 8, the display 7 being configured to receive user input, and the fire extinguishing agent delivery system 8 including:

[0075] The liquid storage container 81 includes a first container and a second container, the first container being used to store water and the second container being used to store foam;

[0076] Powder storage container 82 and gas storage container 83, the powder storage container 82 is used to store dry powder, and the gas storage container 83 is used to store nitrogen. The powder storage container 82 and the gas storage container 83 are connected by a gas pipe and controlled by a valve group; and

[0077] The extinguishing agent spraying terminal is connected to the liquid storage container 81 via a liquid delivery pipeline 86 and / or to the powder storage container 82 via a dry powder delivery pipeline 84. The extinguishing agent spraying terminal is configured to spray extinguishing agent, which includes at least one of water, foam and dry powder. The extinguishing agent spraying terminal includes at least one of a puncture cannon 102, a roof cannon 101, a front cannon 103, a water hose reel 104, a dry powder hose reel 105, an upper vehicle spray nozzle 106, and an lower vehicle spray nozzle 107.

[0078] The controller is configured to control the operating status of the fire extinguishing agent delivery system 8 based on user input. The operating status includes at least one of the following: fire extinguisher spray terminal spraying fire extinguishing agent, fire extinguishing agent spray terminal stopping spraying fire extinguishing agent, fire extinguishing agent delivery system 8 self-cleaning, and discharge of residual fire extinguishing agent.

[0079] Specifically, the liquid delivery pipeline 86 is connected to the outlet of the liquid storage container 81, and the dry powder delivery pipeline 84 is connected to the powder outlet of the powder storage container 82. Specifically, displays 7 are installed both inside and outside the fire truck to facilitate firefighters' firefighting operations while the truck is in motion or parked. When the fire truck is stationary, it draws water from an external water source for firefighting; it can be connected to a fire hydrant or a water tank, in which case the fire truck functions as a water pump. Specifically, the upper vehicle sprinkler nozzle 106 and the lower vehicle sprinkler nozzle 107 can be used for the fire truck's own protection.

[0080] Optionally, the liquid storage container 81 can be a liquid storage tank, the powder storage container 82 can be a dry powder tank, and the gas storage container 83 can be a nitrogen cylinder.

[0081] The fire truck in this embodiment integrates multiple types of extinguishing agents and intelligent interactive control, enabling one-button intelligent start / stop and rapid switching between water, foam, and dry powder extinguishing according to different fire scenarios. This achieves efficient and intelligent fire extinguishing, improving the adaptability and operational efficiency of the fire truck in fire extinguishing scenarios. Users input commands through the display 7, and the controller automatically executes spray start / stop, pipeline self-cleaning, and residual agent discharge, which can reduce operation delays and lower the risk of misoperation, avoid extinguishing agent residue, and extend pipeline life.

[0082] In some embodiments, the display 7 can adjust the flow rate of the extinguishing agent spray terminal and the foam mixing ratio. In addition to controlling the swing and pitch of the fire monitor, the fire monitor handle and remote control can also control the water output mode (direct current / spray) and flow rate of the monitor. The piercing system 6, the boom 5 and the roof monitor 101 are integrated into a composite handle operation. The piercing system and the roof monitor are controlled by a hydraulic rotary reducer. The roof monitor has a horizontal swing of 350° and a pitch angle of -45° to +90°. The addition of a hydraulic rotary reducer increases the working range and improves the fire extinguishing efficiency.

[0083] Specifically, the fire truck adopts bus control. Through a dual-control control panel display 7 located in both the driver's cab and the pump room (between the driver's cab and the liquid storage container 81), it can draw water from natural water sources, output pressurized water for fire extinguishing, or inject water and foam into the liquid storage container 81. It employs an automatic foam mixing system with an adjustable mixing ratio of 1-10%, meeting the mixing requirements of 3% and 6% aqueous film-forming foam. The roof-mounted monitor and boom operation are integrated with a composite handle and control panel display 7, which can control the boom 5's rotation around the turntable 9, as well as its extension, retraction, and luffing movements.

[0084] In some embodiments, the user input includes a first execution command and a first termination command for the extinguishing agent being water. The controller is configured to sequentially open the water intake control valve, the fire pump 4, and the electrically controlled flow valve upon receiving the first execution command, so that the extinguishing agent spraying terminal sprays water. The electrically controlled flow valve is configured to control the outflow rate of the extinguishing agent spraying terminal. The controller is also configured to sequentially close the electrically controlled flow valve, the fire pump 4, and the water intake control valve upon receiving the first termination command, so that the extinguishing agent spraying terminal stops spraying water.

[0085] Optionally, the control valve can be a butterfly valve, etc. Optionally, an indicator light can be set on the display 7, which stays on when the command is executed and turns off when the command is terminated.

[0086] In some embodiments, user input includes a second execution command and a second termination command for the extinguishing agent being foam. The controller is configured to open the foam control valve assembly upon receiving the first execution command and the second execution command in sequence, and the controller is also configured to close the foam valve assembly upon receiving the second termination command.

[0087] In some embodiments, the controller is configured to adjust the foam ratio based on user input.

[0088] In some embodiments, user input includes a foam cleaning command, and the controller is configured to open the foam flushing control valve upon receiving the foam cleaning command.

[0089] In some embodiments, user input includes a drain water command, and the controller is configured to open the drain control valve and the electrically controlled flow valve upon receiving the drain water command.

[0090] The residual water discharge command in this embodiment can reduce the corrosion of pipelines caused by residual water, and at the same time prevent the residual water from affecting the strength of the pipeline when it freezes and expands at low temperatures.

[0091] In some embodiments, the user input includes a third execution command and a third termination command indicating that the extinguishing agent is dry powder. The controller is configured to, upon receiving the third execution command, sequentially open the dry powder high-pressure control valve, open the dry powder air intake control valve, and forward adjustment switching valve 85. The switching valve 85 is configured to, during forward switching, block the liquid delivery pipeline 86 and open the dry powder delivery pipeline 84, so that the extinguishing agent injection terminal can spray dry powder. The controller is also configured to, upon receiving the third termination command, sequentially reverse the adjustment of the switching valve 85, close the dry powder air intake control valve, and close the dry powder high-pressure control valve.

[0092] Optionally, the switching valve 85 can be a three-way ball valve. For example, the three-way ball valve has three states: closed, liquid discharge from the roof cannon 101, and liquid discharge from the puncture cannon 102. The default state of the three-way ball valve is connected to the roof cannon pipeline. It can be switched to the puncture cannon pipeline. When closed, it can also block the liquid delivery pipeline 86 to discharge powder. The dry powder delivery pipeline 84 supplies powder to the puncture cannon 102 through a separate pipeline.

[0093] In some embodiments, user input includes a dry powder removal command, and the controller is configured to open the purge control valve upon receiving the dry powder removal command.

[0094] In some embodiments, the user input includes a venting command, and the controller is configured to open the exhaust control valve of the powder storage container 82 and the venting control valve of the dry powder delivery pipeline 84 upon receiving the venting command.

[0095] The residual gas release in this embodiment can prevent backflow of dry powder after opening the valve due to air in the dry powder tank, which could block the valve; at the same time, it can prevent the inability to refill the tank due to air pressure in the pipeline.

[0096] In some specific embodiments, the front cannon 103 and roof cannon 101 of the fire truck can spray both water and foam, the water hose reel 104 only sprays water, the dry powder hose reel 105 only sprays dry powder, and the piercing cannon 102 can spray water, foam, and dry powder. The one-button operation function of the fire truck is described as follows:

[0097] (1) One-button water pumping: Without any manual butterfly valve operation, press the one-button water pumping button to sequentially open the water tank suction butterfly valve, increase the fire pump speed to the rated speed, open the front cannon electric flow control valve (to control the water flow of the front cannon), and at the same time, the lower right indicator light will light up. Press it again to sequentially close the front cannon electric flow control valve, the fire pump, and the water tank suction butterfly valve, and at the same time, the lower right indicator light will turn off.

[0098] (2) One-button foam: With the one-button water dispensing button pressed, press the one-button foam button to sequentially open the foam system pressure water ball valve (controlling the mixing ratio of foam and water), the foam system liquid suction ball valve, the foam flow control valve, and other foam system valve groups. The lower right indicator light will illuminate. At this time, press foam + / - to control the foam ratio. Press it again to close the foam system valve group, and the lower right indicator light will turn off.

[0099] (3) One-button cleaning: With the one-button water filling and one-button foam filling pressed, press the one-button cleaning button to open the foam system flushing ball valve and close the foam system suction ball valve, foam flow control valve, and foam system external suction ball valve (if any). At the same time, the lower right indicator light will illuminate. Press the button again to close the foam system flushing ball valve, and the lower right indicator light will turn off.

[0100] (4) One-click drain water: Press the drain water button to open the water pump drain ball valve, the front cannon electric flow valve, and the roof cannon electric flow valve. At the same time, the lower right indicator light will illuminate. Press it again to close the water pump drain ball valve, the front cannon electric flow valve, and the roof cannon electric flow valve. At the same time, the lower right indicator light will turn off.

[0101] (5) One-button whole vehicle spray: Without any manual butterfly valve operation, press the whole vehicle spray button to sequentially open the water tank suction butterfly valve, the fire pump runs at medium speed, and the spray ball valve. At the same time, the lower right indicator light will illuminate. Press the button again to sequentially close the spray ball valve, the fire pump, and the water tank suction butterfly valve. At the same time, the lower right indicator light will turn off.

[0102] (6) One-button dry powder operation: Without any manual butterfly valve operation, pressing the one-button dry powder operation button sequentially opens the high-pressure dry powder ball valve and the dry powder inlet ball valve. At the same time, the indicator light on the lower right illuminates, and nitrogen from the nitrogen cylinder enters the dry powder tank. After a certain delay, the boom needle dry powder ball valve is opened, and the three-way ball valve on the boom blocks the passage from the water pipe. Dry powder is then sprayed out from the needle through the pipe. Pressing the button again sequentially closes the high-pressure dry powder ball valve, the dry powder inlet ball valve, and the boom needle dry powder ball valve, while the indicator light on the lower right turns off.

[0103] (7) One-key purging: With the dry powder inlet ball valve, boom needle dry powder ball valve and reel ball valve closed, press the one-key purging button to open the boom needle dry powder purging ball valve and the reel dry powder purging ball valve. The lower right indicator light will illuminate. Press the boom needle dry powder purging ball valve and the reel dry powder purging ball valve again, and the lower right indicator light will turn off.

[0104] (8) One-button venting: If the ball valves of the other dry powder system are not open and the purging is completed, press the one-button venting button to open the dry powder tank exhaust ball valve and the dry powder pipeline residual ball valve. At the same time, the indicator light in the lower right corner will light up. Press it again to close the dry powder tank exhaust ball valve and the dry powder pipeline residual ball valve. At the same time, the indicator light in the lower right corner will turn off.

[0105] The above operation describes the one-button function of powder dispensing for the front cannon 103 and the piercing cannon 102. Similarly, the one-button function of water / foam dispensing for the roof cannon 101, water reel 104, and piercing cannon 102 can be achieved. When dispensing water / foam for the piercing cannon 102, the three-way ball valve is required to reverse the water dispensing direction. Similarly, the dry powder reel 105 has the same logic as the one-button dry powder dispensing for the piercing cannon 102, and will not be described again here.

[0106] The present disclosure provides a detailed description of a fire truck hybrid power system and a fire truck. Specific embodiments have been used to illustrate the principles and implementation methods of the present disclosure. These embodiments are merely illustrative and are intended to help understand the method and core ideas of the present disclosure. It should be noted that those skilled in the art can make various improvements and modifications to the present disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. A fire truck hybrid power system, comprising: The power module (1) includes a first electric drive assembly (10) and a first electric drive component (11), wherein the first electric drive assembly (10) is configured to drive the chassis to travel, and the first electric drive component (11) is configured to drive the upper structure for fire fighting operations. A power supply module (2) is configured to provide electrical energy to the power consumption module (1). The power supply module (2) includes a range extender (21) and a power battery (22). The range extender (21) is configured to provide electrical energy to the power battery (22). A high-voltage distribution unit (3) is connected between the power supply module (2) and the power consumption module (1), and the high-voltage distribution unit (3) is configured to distribute electrical energy from the power supply module (2) to the power consumption module (1); and The controller is configured to allow both the range extender (21) and the power battery (22) to directly supply power to the power module (1) when the power demand of the fire truck is greater than the preset power, and to allow only the power battery (22) to directly supply power to the power module (1) when the power demand of the fire truck is not greater than the preset power.

2. The fire truck hybrid power system according to claim 1, wherein, The power module (1) further includes a second electric drive component (12), which is configured to drive the hydraulic oil pump of the fire truck.

3. The fire truck hybrid power system according to claim 1 or 2, wherein, The first electric drive assembly (10) includes a front electric drive unit (110) and a rear electric drive unit (120), the front electric drive unit (110) being configured to provide driving force to the front axle (111), and the rear electric drive unit (120) being configured to provide driving force to the through axle (121) and the rear axle (122).

4. A fire truck, comprising the fire truck hybrid power system according to any one of claims 1 to 3, wherein the fire truck comprises a fire pump (4), the fire pump (4) comprises a pump impeller (40) and a first electric drive component (11), wherein the output shaft (100) of the first electric drive component (11) is greater than a preset length, and the pump impeller (40) is directly connected to the output shaft (100) to form an integrated electric drive pump.

5. The fire truck according to claim 4, wherein, The fire truck also includes a roof-mounted cannon (101) connected to the boom (5) and a first hydraulic rotary reducer (51), the first hydraulic rotary reducer (51) being configured to drive the roof-mounted cannon (101) to pitch, and the pitch angle range of the roof-mounted cannon (101) from the horizontal state includes -90° to 90°.

6. The fire truck according to claim 4 or 5, wherein, The fire truck also includes a piercing system (6) connected to the boom (5). The piercing system (6) includes a piercing cannon (102) and a hydraulic cylinder (60) equipped with an accumulator. The piercing cannon (102) is configured to penetrate obstacles and spray extinguishing agent. The hydraulic cylinder (60) is configured to drive the piercing cannon (102) to extend and retract. The accumulator is configured to release energy instantaneously to drive the piercing cannon (102) to eject and extend. The piercing cannon (102) is equipped with a nozzle for spraying extinguishing agent and is configured to spray extinguishing agent only when it is in the extended state.

7. The fire truck according to claim 6, wherein, The piercing system (6) further includes a second hydraulic rotary reducer (52), which is configured to drive the piercing gun (102) to pitch, and the piercing gun (102) has a pitch angle range from -90° to 90° from a horizontal state.

8. The fire truck according to any one of claims 4 to 7, further comprising a display (7) and a fire extinguishing agent delivery system (8), the display (7) being configured to receive user input, the fire extinguishing agent delivery system (8) comprising: The liquid storage container (81) includes a first container and a second container, wherein the first container is used to store water and the second container is used to store foam; A powder storage container (82) and a gas storage container (83), wherein the powder storage container (82) is used to store dry powder and the gas storage container (83) is used to store nitrogen. The powder storage container (82) and the gas storage container (83) are connected by a gas pipe and controlled by a valve group. and The extinguishing agent spraying terminal is connected to the liquid storage container (81) via a liquid delivery pipeline (86) and / or to the powder storage container (82) via a dry powder delivery pipeline (84). The extinguishing agent spraying terminal is configured to spray extinguishing agent, which includes at least one of water, foam and dry powder. The extinguishing agent spraying terminal includes at least one of a piercing cannon (102), a roof cannon (101), a front cannon (103), a water hose reel (104), a dry powder hose reel (105), an upper vehicle spray nozzle (106), and an lower vehicle spray nozzle (107). The controller is configured to control the operating state of the fire extinguishing agent delivery system (8) based on the user input. The operating state includes at least one of the following: fire extinguisher spray terminal spraying fire extinguishing agent, fire extinguishing agent spray terminal stopping spraying fire extinguishing agent, fire extinguishing agent delivery system (8) self-cleaning and discharging residual fire extinguishing agent.

9. The fire truck according to claim 8, wherein, The user input includes a first execution command and a first termination command for the extinguishing agent being water. The controller is configured to sequentially open the water intake control valve, the fire pump (4), and the electrically controlled flow valve upon receiving the first execution command, so that the extinguishing agent spraying terminal sprays water. The electrically controlled flow valve is configured to control the outflow rate of the extinguishing agent spraying terminal. The controller is also configured to sequentially close the electrically controlled flow valve, the fire pump (4), and the water intake control valve upon receiving the first termination command, so that the extinguishing agent spraying terminal stops spraying water.

10. The fire truck according to claim 8 or 9, wherein, The user input includes a second execution command and a second termination command for the extinguishing agent being foam. The controller is configured to open the foam control valve assembly upon receiving the first execution command and the second execution command in sequence. The controller is also configured to close the foam valve assembly upon receiving the second termination command.

11. The fire truck according to claim 10, wherein, The controller is configured to adjust the foam ratio based on the user input.

12. The fire truck according to claim 10 or 11, wherein, The user input includes a foam cleaning command, and the controller is configured to open the foam flushing control valve upon receiving the foam cleaning command.

13. The fire truck according to any one of claims 9 to 12, wherein, The user input includes a drain water command, and the controller is configured to open the drain control valve and the electrically controlled flow valve upon receiving the drain water command.

14. The fire truck according to any one of claims 9 to 13, wherein, The user input includes a third execution command and a third termination command for the extinguishing agent being dry powder. The controller is configured to, upon receiving the third execution command, sequentially open the dry powder high-pressure control valve, open the dry powder air intake control valve, and the forward adjustment switching valve (85). The switching valve (85) is configured to, during forward switching, block the liquid delivery pipeline (86) and open the dry powder delivery pipeline (84) so ​​that the extinguishing agent spraying terminal sprays dry powder. The controller is also configured to, upon receiving the third termination command, sequentially reverse the adjustment of the switching valve (85), close the dry powder air intake control valve, and close the dry powder high-pressure control valve.

15. The fire truck according to claim 14, wherein, The user input includes a dry powder removal command, and the controller is configured to open the purge control valve upon receiving the dry powder removal command.

16. The fire truck according to claim 14 or 15, wherein, The user input includes a venting command, and the controller is configured to open the exhaust control valve of the powder storage container (82) and the venting control valve of the dry powder conveying pipeline (84) upon receiving the venting command.

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