CN219154456U - Chassis hybrid power system applied to special vehicle - Google Patents
Chassis hybrid power system applied to special vehicle Download PDFInfo
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- CN219154456U CN219154456U CN202320147169.4U CN202320147169U CN219154456U CN 219154456 U CN219154456 U CN 219154456U CN 202320147169 U CN202320147169 U CN 202320147169U CN 219154456 U CN219154456 U CN 219154456U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
The utility model discloses a chassis hybrid power system applied to a special vehicle, and relates to the technical field of automobiles. The rear axle driving motor is electrically connected with the high-voltage distribution device through a rear axle motor controller, and the rear axle driving motor is connected with rear axle wheels through a transmission part. The first connecting end of the high-voltage generator is electrically connected with the high-voltage distribution device through the generator controller, and the second connecting end of the high-voltage generator is mechanically connected with the output of the engine. The high-voltage battery is electrically connected with the high-voltage distribution device. The engine is mechanically connected with power input shafts of the steering oil pump and the braking air pump respectively. The power output of the starter is mechanically connected with the engine, the low-voltage battery is electrically connected with the starter, and the low-voltage battery is electrically connected with the high-voltage distribution device through the voltage converter. The power system has two starting paths, and can ensure the running reliability of the vehicle.
Description
Technical Field
The utility model relates to the technical field of automobiles, in particular to a chassis hybrid power system applied to special vehicles.
Background
The special vehicle mainly refers to a vehicle carrying a special task, and relates to the fields of military industry, medical treatment, fire protection and the like, such as fire fighting trucks, ambulances, engineering project emergency vehicles and the like. The special vehicle is easier to fail because of the relatively bad working environment, and has higher requirements on reliability and the like because of carrying special tasks.
With the popularization of new energy technology of commercial vehicles, various special equipment starts to try electric transformation, but due to the reasons of low battery energy density, imperfect charging facilities in remote areas, poor low-temperature environment adaptability and the like, the application of a pure chassis technical route in special vehicle operation scenes such as long time, high power, severe environment and the like is limited; the mixing technology has great popularization value in the scenes.
The hybrid system in the related art generally has only one starting path, namely, the high-voltage battery discharges, and the engine is started by the reverse towing of the engine by the high-voltage generator. The operation task of the special vehicle is often urgent, so that once the chassis power system of the special vehicle fails and cannot be started, the operation task is affected, and the problems of delay, rescue and the like occur.
Disclosure of Invention
Aiming at the problems, the utility model provides a chassis hybrid power system applied to a special vehicle, which is provided with two starting paths, realizes one standby, and ensures the running reliability of the vehicle.
The technical scheme adopted for solving the technical problems is as follows:
the chassis hybrid power system applied to the special vehicle comprises a high-voltage power distribution device, wherein a rear axle driving motor is electrically connected with the high-voltage power distribution device through a rear axle motor controller, and the rear axle driving motor is connected with rear axle wheels through a transmission part;
the first connecting end of the high-voltage generator is electrically connected with the high-voltage distribution device through the generator controller, and the second connecting end of the high-voltage generator is mechanically connected with the output of the engine;
the high-voltage battery is electrically connected with the high-voltage distribution device;
the engine is mechanically connected with the power input shafts of the steering oil pump and the braking air pump respectively;
the power output of the starter is mechanically connected with the engine, the low-voltage battery is electrically connected with the starter, and the low-voltage battery is electrically connected with the high-voltage distribution device through the voltage converter.
Optionally, the motor further comprises a front axle driving motor, the front axle driving motor is electrically connected with the high-voltage power distribution device through a front axle motor controller, and the front axle driving motor is connected with front axle wheels through a transmission part.
Optionally, the oil pan of the engine adopts a flat oil pan.
Optionally, the high-voltage power distribution device further comprises a super capacitor, and the super capacitor is electrically connected with the high-voltage power distribution device.
Optionally, the engine is provided with a low-voltage generator, a first connection end of the low-voltage generator is electrically connected with the low-voltage battery, and a second connection end of the low-voltage generator is mechanically connected with the output of the engine.
Optionally, the electric air pump is electrically connected with the high-voltage power distribution device through the first inverter, the mechanical braking device comprises a braking component, and the braking air pump and the electric air pump are used as air sources to be connected in parallel with the braking component.
Optionally, the power supply system further comprises an electric oil pump, the electric oil pump is electrically connected with the high-voltage power distribution device through a second inverter, the steering device comprises a steering component, and the steering oil pump and the electric oil pump are used as power sources and connected in parallel to the steering component.
Optionally, the electric oil pump is electrically connected with the battery.
Optionally, the high-voltage generator adopts a permanent magnet synchronous motor.
Optionally, the high-voltage battery adopts a lithium iron phosphate battery.
The beneficial effects of the utility model are as follows:
according to the chassis hybrid power system applied to the special vehicle, the low-voltage battery and the starter are arranged, so that the power system is provided with two starting paths to realize one standby, when a normal starting path fails, the starter can be driven by the low-voltage battery, and then the engine is started by the starter in a reverse engine dragging mode, so that the running reliability of the vehicle is ensured, and the working requirements of the special vehicle are met.
Drawings
Fig. 1 is a schematic diagram of a chassis hybrid system applied to a special vehicle according to an embodiment of the present application.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application, and the described embodiments are only some embodiments, but not all embodiments of the present application. All other embodiments obtained without inventive effort by a person skilled in the art on the basis of the embodiments of the present application shall fall within the scope of protection of the present application.
As shown in fig. 1, a chassis hybrid system applied to a special vehicle includes a high-voltage distribution device, a rear axle motor controller, a rear axle driving motor, an engine, a high-voltage generator, a generator controller, a high-voltage battery, a steering oil pump, a brake air pump, a low-voltage battery, a voltage converter and a starter.
The first connecting end of the rear axle motor controller is electrically connected with the high-voltage distribution device, the second connecting end of the first motor controller is electrically connected with the first connecting end of the rear axle driving motor, and the second connecting end (namely, the power output shaft) of the rear axle driving motor is connected with the rear axle wheel through a transmission part and is used for driving the rear axle wheel to rotate.
The first connecting end of the generator controller is electrically connected with the high-voltage distribution device, the second connecting end of the generator controller is electrically connected with the first connecting end of the high-voltage generator, and the second connecting end (namely the power output shaft) of the high-voltage generator is mechanically connected with the output of the engine. Illustratively, the second connecting end of the high voltage generator is mechanically coupled to an end of a crankshaft of the engine.
The high-voltage battery is electrically connected with the high-voltage distribution device. Under normal driving conditions, the engine rotates to drive the high-voltage generator to generate electricity, and electric energy generated by the high-voltage generator is transmitted to the rear axle driving motor through the high-voltage distribution device and is used for driving the rear axle wheel to rotate. When the vehicle runs under the high-load working condition, because the power consumed by the rear axle wheels is high, the electric energy generated by the high-voltage generator is insufficient to drive the rear axle wheels to rotate, and then the electric energy in the high-voltage battery and the electric energy generated by the high-voltage generator are simultaneously transmitted to the rear axle driving motor through the high-voltage distribution device for driving the rear axle wheels to rotate. When the vehicle runs under the low-load working condition, because the power consumed by the rear axle wheels is low, the electric energy generated by the high-voltage generator exceeds the electric energy required by the rotation of the rear wheels, and part of the electric energy generated by the high-voltage generator is transmitted to the high-voltage battery for storage through the high-voltage distribution device. According to the analysis, the high-voltage battery plays a role in peak clipping and valley filling in the running process of the vehicle.
The engine is respectively connected with the power input shafts of the steering oil pump and the braking air pump through a mechanical transmission mechanism and is used for providing power for the steering oil pump and the braking air pump.
The power output shaft of the starter is mechanically connected with the engine, and the low-voltage battery is electrically connected with the starter and is used for providing electric energy for the starter. The low-voltage battery is electrically connected with the high-voltage distribution device through a voltage converter, and the voltage converter can convert high-voltage energy output by the high-voltage distribution device into low-voltage energy so as to charge the low-voltage battery.
The application provides a chassis hybrid power system for special type vehicle includes two start-up routes, is respectively:
the first starting path is that the high-voltage battery discharges to drive the high-voltage generator to rotate (at the moment, the high-voltage generator is used as a driving motor), and the high-voltage generator drives the crankshaft of the engine to rotate, so that the reverse dragging of the engine is realized, and the starting of the engine is realized.
The second starting path is that the low-voltage battery discharges to drive the starter to rotate, and the starter drives the crankshaft of the engine to rotate, so that the reverse dragging of the engine is realized, and the starting of the engine is realized.
As a specific implementation manner, the first starting path in this embodiment is a conventional engine starting path, and when the first starting path fails and the engine cannot be started, the engine is started through the second starting path.
As a specific embodiment, the high-voltage generator described in this embodiment employs a permanent magnet synchronous motor. The high-voltage motor adopts a lithium iron phosphate battery, and the low-voltage battery adopts a lead-acid battery.
Further, the chassis hybrid power system applied to the special vehicle further comprises a front axle motor controller and a front axle driving motor. The first connecting end of the front axle motor controller is electrically connected with the high-voltage distribution device, the second connecting end of the third motor controller is electrically connected with the first connecting end of the front axle driving motor, and the second connecting end (namely, the power output shaft) of the front axle driving motor is connected with the front axle wheels through a transmission part and used for driving the front axle wheels to rotate.
Thus, time-sharing four-wheel drive control can be performed. For example, when the vehicle is traveling on a good road, only the rear axle driving motor is operated under the control of the high-voltage power distribution device, and at this time, the rear axle wheels are driving wheels, the front axle wheels are driven wheels, and the whole vehicle is driven in a rear drive mode. When the vehicle runs on the ice and snow road, the front axle driving motor and the rear axle driving motor are controlled by the high-voltage power distribution device to work, at the moment, the front axle wheels and the rear axle wheels are all driving wheels, and the whole vehicle is driven by four wheels. In addition, the driving force of the front and rear axle wheels is coordinated by the differential moment of the front and rear axle driving motors, so that the operability of the vehicle and the trafficability of the ice and snow road surface can be improved.
As a specific implementation manner, in this embodiment, the oil pan of the engine adopts a flat oil pan to meet the arrangement space requirement of the front electric steering axle.
Further, because the working place of the special vehicle is special, the vehicle is often required to have good braking performance, such as a snow remover and the like. The chassis hybrid power system applied to the special vehicle not only has a traditional mechanical braking device, but also can brake in a reverse-towing engine mode. The working process is as follows: during braking, the front axle and the rear axle rotate to drive the front driving motor and the rear driving motor to rotate so as to generate electric energy (at the moment, the front driving motor and the rear driving motor are used as generators), the generated electric energy is transmitted to the high-voltage generator through the high-voltage distribution device, and the crankshaft of the engine is driven to rotate through the high-voltage generator, so that the function of towing the engine reversely is realized. At the same time, the opening size of an exhaust valve of the engine is adjusted to adjust the reverse towing load of the engine, so that the braking force is adjusted, and the exhaust braking is realized. Therefore, the braking power can be improved, the braking distance is reduced, the service life of mechanical braking is prolonged, and the running safety of the vehicle is improved.
Further, the chassis hybrid power system applied to the special vehicle further comprises a super capacitor, and the super capacitor is electrically connected with the high-voltage distribution device.
The reason for this design is that the power generation end cannot respond in real time according to the driving end, and there is a time difference, just like the river is suddenly intercepted, the water source is not broken yet, and at this time, there is a wave head. The high-voltage battery cannot be charged at low temperature, so that the high-voltage battery cannot realize peak clipping and is easy to cause unstable current. Through setting up super capacitor, when unable charging of low temperature, unnecessary electric current can be absorbed by super capacitor to improve the stability of electric current, avoid causing the damage to electrical component, improve the adaptability of vehicle to cold operation environment.
Further, a low-voltage generator is arranged on the engine, a first connecting end of the low-voltage generator is electrically connected with the low-voltage battery, and a second connecting end of the low-voltage generator is mechanically connected with the engine through a mechanical transmission mechanism. In operation, the engine drives the low-voltage generator to rotate for power generation, and the electric energy generated by the low-voltage generator is transmitted to the low-voltage battery for storage, so that the charging of the low-voltage battery is realized.
The low-voltage generator and the voltage converter can realize the charging function of the low-voltage battery, so that the power consumption of a low-voltage system can be ensured, and the reliability of low-voltage power consumption is ensured.
Further, the chassis hybrid power system applied to the special vehicle further comprises an electric air pump and a first inverter, wherein a first connecting end of the first inverter is electrically connected with the high-voltage power distribution device, and a second connecting end of the first inverter is electrically connected with the electric air pump. The mechanical braking device comprises a braking component, a braking air pump and an electric air pump, wherein the braking air pump and the electric air pump are used as air sources to be connected in parallel with the braking component and used for providing air source power for the braking component. Namely, two sets of air sources exist in the mechanical braking device and are in parallel connection. Thus, under the condition that one air source fails, the other air source can be started, and the reliability of mechanical braking is ensured.
Further, the chassis hybrid power system applied to the special vehicle further comprises an electric oil pump and a second inverter, wherein a first connecting end of the second inverter is electrically connected with the high-voltage power distribution device, and a second connecting end of the second inverter is electrically connected with the electric oil pump. The steering device comprises a steering component, a steering oil pump and an electric oil pump, wherein the steering oil pump and the electric oil pump are used as power sources and connected in parallel to the steering component for providing power for the steering component. Namely, two sets of power sources exist in the steering device and are in parallel connection. Therefore, under the condition that one power source fails, the other power source can be started, and the reliability of the steering function of the vehicle is ensured.
Further, the electric oil pump is electrically connected with the low-voltage battery, so that two power supply ways exist for the electric oil pump, the electric oil pump is powered by the high-voltage distribution device and the second inverter, the electric oil pump is driven to work, and the electric oil pump is driven to work by the electric battery, so that high-low voltage double-source driving is realized.
The starting, braking and steering of the chassis hybrid power system applied to the special vehicle provided by the embodiment of the application all have two power sources, so that the vehicle can be used for one purpose, and the reliability of normal operation of the vehicle can be effectively ensured.
On the basis of the embodiments provided by the application, other embodiments obtained by combining, splitting, recombining and other means of the embodiments of the application do not exceed the protection scope of the application.
The foregoing detailed description of the embodiments of the present application has been provided for the purpose of illustrating the purposes, technical solutions and advantages of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, i.e., any modifications, equivalent substitutions, improvements, etc. made on the basis of the embodiments of the present application should be included in the scope of the embodiments of the present application.
Claims (10)
1. A chassis hybrid system for a specialty vehicle, characterized by: the rear axle driving motor is electrically connected with the high-voltage power distribution device through a rear axle motor controller, and is connected with rear axle wheels through a transmission part;
the first connecting end of the high-voltage generator is electrically connected with the high-voltage distribution device through the generator controller, and the second connecting end of the high-voltage generator is mechanically connected with the output of the engine;
the high-voltage battery is electrically connected with the high-voltage distribution device;
the engine is mechanically connected with the power input shafts of the steering oil pump and the braking air pump respectively;
the power output of the starter is mechanically connected with the engine, the low-voltage battery is electrically connected with the starter, and the low-voltage battery is electrically connected with the high-voltage distribution device through the voltage converter.
2. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the front axle driving motor is electrically connected with the high-voltage distribution device through a front axle motor controller, and the front axle driving motor is connected with front axle wheels through a transmission part.
3. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the oil pan of the engine adopts a flat oil pan.
4. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the high-voltage power distribution device also comprises a super capacitor, and the super capacitor is electrically connected with the high-voltage power distribution device.
5. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the engine is provided with a low-voltage generator, a first connecting end of the low-voltage generator is electrically connected with the low-voltage battery, and a second connecting end of the low-voltage generator is mechanically connected with the output of the engine.
6. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the mechanical braking device comprises a braking component, and the braking air pump and the electric air pump are connected in parallel on the braking component as air sources.
7. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the power supply system is characterized by further comprising an electric oil pump, the electric oil pump is electrically connected with the high-voltage power distribution device through a second inverter, the steering device comprises a steering component, and the steering oil pump and the electric oil pump are used as power sources and connected in parallel to the steering component.
8. A chassis hybrid system for a specialty vehicle according to claim 7, wherein: the electric oil pump is electrically connected with the low-voltage battery.
9. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the high-voltage generator adopts a permanent magnet synchronous motor.
10. A chassis hybrid system for a specialty vehicle according to claim 1, wherein: the high-voltage battery adopts a lithium iron phosphate battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320147169.4U CN219154456U (en) | 2023-01-31 | 2023-01-31 | Chassis hybrid power system applied to special vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320147169.4U CN219154456U (en) | 2023-01-31 | 2023-01-31 | Chassis hybrid power system applied to special vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN219154456U true CN219154456U (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320147169.4U Active CN219154456U (en) | 2023-01-31 | 2023-01-31 | Chassis hybrid power system applied to special vehicle |
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| CN (1) | CN219154456U (en) |
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2023
- 2023-01-31 CN CN202320147169.4U patent/CN219154456U/en active Active
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