CN220332478U - Composite energy regeneration braking energy recovery system of automatic driving vehicle - Google Patents
Composite energy regeneration braking energy recovery system of automatic driving vehicle Download PDFInfo
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- CN220332478U CN220332478U CN202320540435.XU CN202320540435U CN220332478U CN 220332478 U CN220332478 U CN 220332478U CN 202320540435 U CN202320540435 U CN 202320540435U CN 220332478 U CN220332478 U CN 220332478U
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- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 238000011084 recovery Methods 0.000 title claims abstract description 46
- 230000008929 regeneration Effects 0.000 title claims description 5
- 238000011069 regeneration method Methods 0.000 title claims description 5
- 230000001172 regenerating effect Effects 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000001133 acceleration Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 19
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 17
- 229910001416 lithium ion Inorganic materials 0.000 claims description 17
- 230000008054 signal transmission Effects 0.000 claims description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 238000004146 energy storage Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The composite energy regenerative braking energy recovery system for the automatic driving vehicle comprises a signal acquisition system for acquiring and transmitting environmental information data in the driving process of the automatic driving vehicle and a composite power source braking energy recovery system for automatically controlling regenerative braking of the automatic driving vehicle; the signal acquisition system detects the distance and speed between the current vehicle and the front vehicle, acceleration signals and the phase information of a front traffic signal lamp based on vehicle-base communication transmission, related data are processed by the composite power supply braking energy recovery system controller and then send out a deceleration instruction, and the composite power supply braking energy recovery system is used for braking energy recovery and braking deceleration. The utility model can effectively solve the problem of regenerative braking control of the electric automobile loaded with the composite energy system in the automatic driving environment and improve the regenerative braking energy recovery effect of the automatic driving automobile.
Description
Technical Field
The utility model relates to a regenerative braking energy recovery system, in particular to a composite energy regenerative braking energy recovery system of an automatic driving vehicle.
Background
In recent years, electric automobiles develop heat. The electric automobile gradually replaces the traditional internal combustion engine automobile with the energy-saving and environment-friendly advantages, and the maintenance amount of the electric automobile is increased year by year. In order to make more efficient use of its energy, regenerative braking systems have been developed. The occurrence of the composite energy source regenerative braking system solves the problem that the regenerative braking system taking a single power battery as an energy source is low in energy recovery efficiency.
The development of electric automobiles tends to advance toward intellectualization and automation. However, most of the current electric vehicle brake control methods loaded with the composite energy regenerative brake system still focus on driver depression of the brake pedal. On an autonomous vehicle, the driver's depression of the brake pedal will no longer be used as input to the brake system.
Disclosure of Invention
The utility model provides a composite energy regenerative braking energy recovery system of an automatic driving vehicle, which aims to solve the problem of regenerative braking control of the automatic driving vehicle loaded with the composite energy regenerative braking system and improve the regenerative braking energy recovery efficiency.
The technical scheme adopted by the utility model is as follows: the composite energy regenerative braking energy recovery system of the automatic driving vehicle comprises a signal acquisition system (14) for acquiring and transmitting environmental information data in the driving process of the automatic driving vehicle and a composite power source braking energy recovery system (13) for automatically controlling regenerative braking of the automatic driving vehicle;
the signal acquisition system (14) is connected with the composite power supply braking energy recovery system (13) through the signal transmission bus (12), the signal acquisition system (14) transmits the acquired distance between the vehicle and the front vehicle, the speed and the acceleration signals and the front traffic signal lamp phase information based on vehicle-based communication transmission to the composite power supply braking energy recovery system (13), and if the composite power supply braking energy recovery system (13) judges that the vehicle needs to be braked in a decelerating mode and meets the regenerative braking condition, the required regenerative braking force is calculated, and the composite power supply braking energy recovery system (13) is used for braking energy recovery and braking.
Further, the signal acquisition system (14) comprises a plurality of vehicle-mounted cameras (8), a laser radar (9), a millimeter wave radar (10) and a traffic signal phase receiver (11) which is in traffic-based communication with a traffic signal intersection, wherein the vehicle-mounted cameras are arranged on an automatic driving vehicle; the vehicle-mounted camera (8), the laser radar (9) and the millimeter wave radar (10) detect the distance, the speed and the acceleration signals of the current vehicle and the front vehicle, and the traffic signal lamp phase receiver (11) receives the traffic signal lamp phase information of the front intersection.
Further, the composite power supply braking energy recovery system (13) comprises a composite energy storage system, a motor driver (5) and a driving motor (6); the composite energy storage system comprises a lithium ion battery pack (2), an electric double layer capacitor (3) and a bidirectional DC/DC (4), wherein the lithium ion battery pack (2) is used as a main energy source, the electric double layer capacitor (3) is used as an auxiliary energy source, and the bidirectional DC/DC (4) is used for matching the voltage of the electric double layer capacitor (3) with the bus voltage; the signal receiving end of the motor driver (5) is connected with the signal transmission bus (12), the control end of the motor driver (5) is electrically connected with the driving motor (6), and the motor driver (5) controls the rotation direction of the magnetic field of the driving motor (6) according to the received signal transmission bus (12); when the vehicle is in a regenerative braking mode, the rotation direction of the magnetic field is reverse, vehicle kinetic energy is transmitted to the driving motor (6) through the tire (1) and the transmission system (7), the driving motor (6) rotates to generate electric braking torque, at the moment, the driving motor (6) is in a power generation state, the driving motor (6) recovers the generated energy into the composite power supply braking energy recovery system (13) and distributes the energy into the double-electric-layer capacitor (3) and the lithium ion battery pack (2) after being processed by the controller; electric energy is preferentially recovered by the electric double layer capacitor (3), and if the SOC of the electric double layer capacitor (3) is too high and the SOC of the lithium ion battery pack (2) is low, part of the electric energy is recovered by the lithium ion battery pack (2).
The beneficial effects of the utility model are as follows: the regenerative braking control problem of the automatic driving vehicle loaded with the composite energy regenerative braking system can be effectively solved, and the technical gap in the aspect is made up; the energy utilization rate and the regenerative braking energy recovery efficiency of the automatic driving vehicle are improved; and a certain reference is provided for the research of a regenerative braking control method of a subsequent automatic driving vehicle.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Reference numerals illustrate: 1. a tire; 2. a lithium ion battery pack; 3. an electric double layer capacitor; 4. bidirectional DC/DC; 5. a motor driver; 6. a driving motor; 7. a transmission system; 8. a vehicle-mounted camera; 9. a laser radar; 10. millimeter wave radar; 11. a traffic signal phase receiver; 12. a signal transmission bus; 13. the composite power supply brakes the energy recovery system; 14. and a signal acquisition system.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, as the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience in describing the present utility model and simplifying the description based on the azimuth or positional relationship shown in the drawings, it should not be construed as limiting the present utility model, but rather should indicate or imply that the devices or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present utility model, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to the drawings, a composite energy regenerative braking energy recovery system of an automatic driving vehicle comprises a signal acquisition system 14 for acquiring and transmitting environmental information data in the driving process of the automatic driving vehicle and a composite power braking energy recovery system 13 for automatically controlling regenerative braking of the automatic driving vehicle;
the signal acquisition system 14 is connected with the composite power supply braking energy recovery system 13 through the signal transmission bus 12, the signal acquisition system 14 transmits the acquired distance between the vehicle and the front vehicle, the speed and the acceleration signals and the front traffic signal lamp phase information based on vehicle-base communication transmission to the composite power supply braking energy recovery system 13, and if the composite power supply braking energy recovery system 13 judges that the vehicle needs to be braked slowly and meets the regenerative braking condition, the required regenerative braking force is calculated, and the composite power supply braking energy recovery system 13 performs braking energy recovery and braking.
Further, the signal acquisition system 14 comprises a plurality of vehicle-mounted cameras 8, a laser radar 9, a millimeter wave radar 10, and a traffic signal phase receiver 11 in traffic-based communication with a traffic signal intersection mounted on an autonomous vehicle; the vehicle-mounted camera 8, the laser radar 9 and the millimeter wave radar 10 detect the distance, the speed and the acceleration signals of the current vehicle and the front vehicle, and the traffic signal lamp phase receiver 11 receives the traffic signal lamp phase information of the front intersection.
Further, the composite power source braking energy recovery system 13 comprises a composite energy storage system, a motor driver 5 and a driving motor 6; the composite energy storage system comprises a lithium ion battery pack 2, an electric double layer capacitor 3 and a bidirectional DC/DC4, wherein the lithium ion battery pack 2 is used as a main energy source, the electric double layer capacitor 3 is used as an auxiliary energy source, and the bidirectional DC/DC4 is used for matching the voltage of the electric double layer capacitor 3 with the bus voltage; specifically, the power of the driving motor 6 is determined by a dynamic equation of the vehicle, and the power of the motor driver 5, the lithium ion battery pack 2 and the bidirectional DC/DC4 is selected according to the power of the driving motor 6.
The signal receiving end of the motor driver 5 is connected with the signal transmission bus 12, the control end of the motor driver 5 is electrically connected with the driving motor 6, and the motor driver 5 controls the rotation direction of the magnetic field of the driving motor 6 according to the received signal transmission bus 12 signal; when the vehicle is in the regenerative braking mode, the rotation direction of the magnetic field is reverse, vehicle kinetic energy is transmitted to the driving motor 6 through the tire 1 and the transmission system 7, the driving motor 6 rotates to generate electric braking torque, at the moment, the driving motor 6 is in a power generation state, and the driving motor 6 recovers the generated energy into the composite power source braking energy recovery system 13 and distributes the energy into the double-electric-layer capacitor 3 and the lithium ion battery pack 2 after being processed by the controller; electric energy is preferentially recovered from the electric double layer capacitor 3, and if the SOC of the electric double layer capacitor 3 is too high and the SOC of the lithium ion battery pack 2 is low, a part of the electric energy is recovered from the lithium ion battery pack 2.
The application scene of the composite energy regeneration braking energy recovery system of the automatic driving vehicle is as follows: 1. the signal acquisition system 14 detects that the front vehicle is decelerating, and the automatic driving vehicle needs to be braked and decelerated; 2. the signal acquisition system 14 detects that the autonomous vehicle cannot pass through the front traffic light junction and that the autonomous vehicle needs to be braked and decelerated.
The composite energy regeneration braking energy recovery system of the automatic driving vehicle is applied to the L4/L5-level automatic driving vehicle.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present utility model should not be construed as being limited to the specific forms set forth in the embodiments, and the scope of protection of the present utility model and equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims (3)
1. A composite energy regeneration braking energy recovery system of an automatic driving vehicle is characterized in that: the system comprises a signal acquisition system (14) for acquiring and transmitting environmental information data in the running process of the automatic driving vehicle and a composite power supply braking energy recovery system (13) for automatically controlling the regenerative braking of the automatic driving vehicle;
the signal acquisition system (14) is connected with the composite power supply braking energy recovery system (13) through the signal transmission bus (12), the signal acquisition system (14) transmits the acquired distance between the vehicle and the front vehicle, the speed and the acceleration signals and the front traffic signal lamp phase information based on vehicle-based communication transmission to the composite power supply braking energy recovery system (13), and if the composite power supply braking energy recovery system (13) judges that the vehicle needs to be braked in a decelerating mode and meets the regenerative braking condition, the required regenerative braking force is calculated according to a set algorithm, and the composite power supply braking energy recovery system (13) is used for braking energy recovery and braking.
2. A composite energy regenerative braking energy recovery system for an autonomous vehicle as defined in claim 1, wherein: the signal acquisition system (14) comprises a plurality of vehicle-mounted cameras (8), a laser radar (9), a millimeter wave radar (10) and a traffic signal lamp phase receiver (11) which is in vehicle-based communication with a traffic signal intersection, wherein the vehicle-mounted cameras are arranged on an automatic driving vehicle; the vehicle-mounted camera (8), the laser radar (9) and the millimeter wave radar (10) detect the distance, the speed and the acceleration signals of the current vehicle and the front vehicle, and the traffic signal lamp phase receiver (11) receives the traffic signal lamp phase information of the front intersection.
3. A composite energy regenerative braking energy recovery system for an autonomous vehicle as defined in claim 1, wherein: the composite power supply braking energy recovery system (13) comprises a composite energy storage system, a motor driver (5) and a driving motor (6); the composite energy storage system comprises a lithium ion battery pack (2), an electric double layer capacitor (3) and a bidirectional DC/DC (4), wherein the lithium ion battery pack (2) is used as a main energy source, the electric double layer capacitor (3) is used as an auxiliary energy source, and the bidirectional DC/DC (4) is used for matching the voltage of the electric double layer capacitor (3) with the bus voltage;
the signal receiving end of the motor driver (5) is connected with the signal transmission bus (12), the control end of the motor driver (5) is electrically connected with the driving motor (6), and the motor driver (5) controls the rotation direction of the magnetic field of the driving motor (6) according to the received signal transmission bus (12); when the vehicle is in a regenerative braking mode, the rotation direction of the magnetic field is reverse, vehicle kinetic energy is transmitted to the driving motor (6) through the tire (1) and the transmission system (7), the driving motor (6) rotates to generate electric braking torque, at the moment, the driving motor (6) is in a power generation state, the driving motor (6) recovers the generated energy into the composite power supply braking energy recovery system (13) and distributes the energy into the double-electric-layer capacitor (3) and the lithium ion battery pack (2) after being processed by the controller; electric energy is preferentially recovered by the electric double layer capacitor (3), and if the SOC of the electric double layer capacitor (3) is too high and the SOC of the lithium ion battery pack (2) is low, part of the electric energy is recovered by the lithium ion battery pack (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320540435.XU CN220332478U (en) | 2023-03-20 | 2023-03-20 | Composite energy regeneration braking energy recovery system of automatic driving vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320540435.XU CN220332478U (en) | 2023-03-20 | 2023-03-20 | Composite energy regeneration braking energy recovery system of automatic driving vehicle |
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| CN220332478U true CN220332478U (en) | 2024-01-12 |
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| CN202320540435.XU Active CN220332478U (en) | 2023-03-20 | 2023-03-20 | Composite energy regeneration braking energy recovery system of automatic driving vehicle |
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- 2023-03-20 CN CN202320540435.XU patent/CN220332478U/en active Active
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