CN112549997A - Multi-power-source power system of hydrogen energy automobile - Google Patents

Multi-power-source power system of hydrogen energy automobile Download PDF

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Publication number
CN112549997A
CN112549997A CN202011590678.1A CN202011590678A CN112549997A CN 112549997 A CN112549997 A CN 112549997A CN 202011590678 A CN202011590678 A CN 202011590678A CN 112549997 A CN112549997 A CN 112549997A
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CN
China
Prior art keywords
power
distribution box
voltage distribution
fuel cell
super capacitor
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Pending
Application number
CN202011590678.1A
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Chinese (zh)
Inventor
安元元
郝义国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Grove Hydrogen Automobile Co Ltd
Wuhan Grove Hydrogen Energy Automobile Co Ltd
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Wuhan Grove Hydrogen Energy Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Wuhan Grove Hydrogen Energy Automobile Co Ltd filed Critical Wuhan Grove Hydrogen Energy Automobile Co Ltd
Priority to CN202011590678.1A priority Critical patent/CN112549997A/en
Publication of CN112549997A publication Critical patent/CN112549997A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a multi-power-source power system of a hydrogen energy automobile. The fuel cell is electrically connected with a first high-voltage distribution box through a fuel cell booster, the power battery and the super capacitor are electrically connected with the first high-voltage distribution box, the first high-voltage distribution box is electrically connected with a load system of an automobile, and the fuel cell, the fuel cell booster, the power battery, the super capacitor, the first high-voltage distribution box and the load system are electrically connected with a whole automobile controller. The invention can step on the accelerator pedal when the vehicle starts, can use power battery and super capacitor to carry on the energy output or supplement the energy output at this moment first, after the fuel cell power rises, can cut off the energy supply of power battery and super capacitor; when the vehicle slides, the vehicle control unit sends torque for recovering sliding energy to the driving motor system, the driving motor system recovers the sliding energy into the power battery and the super capacitor, and the braking energy recovery is also based on the same principle.

Description

Multi-power-source power system of hydrogen energy automobile
Technical Field
The invention relates to the technical field of hydrogen energy vehicles, in particular to a multi-power-supply power system of a hydrogen energy vehicle.
Background
The hydrogen energy automobile has the defect that the power performance of the hydrogen energy automobile is insufficient due to the defect that the power response delay time and the power rise time of the hydrogen fuel cell are long; meanwhile, the hydrogen fuel cell cannot directly recover energy.
Disclosure of Invention
The invention aims to provide a hydrogen energy vehicle multi-power-source power system with quick response and energy recovery aiming at the defects of the prior art.
The invention relates to a multi-power-supply power system of a hydrogen energy automobile, which comprises a fuel cell, a power cell, a super capacitor and a first high-voltage distribution box, wherein the fuel cell is connected with the power cell; the fuel cell passes through fuel cell booster with first high voltage distribution box electricity is connected, power battery and super capacitor with first high voltage distribution box electricity is connected, first high voltage distribution box is connected with the load system electricity of car, fuel cell booster, power battery, super capacitor, first high voltage distribution box and load system all are connected with vehicle control unit electricity.
Further, the load system comprises a driving motor system and an electric control hydraulic power-assisted steering system.
Further, the load system includes second high tension switchgear, high tension fan control system and step-down DCDC, second high tension switchgear with first high tension switchgear electricity is connected, high tension fan control system and step-down DCDC with second high tension switchgear electricity is connected.
Furthermore, the second high-voltage distribution box, the high-voltage fan control system and the voltage reduction DCDC form a three-in-one module.
Furthermore, the driving motor system comprises a motor and a motor controller, the motor controller is electrically connected with the motor, and the motor is in transmission connection with a rear axle of the automobile.
Further, the fuel cell booster, the power battery, the super capacitor, the first high-voltage distribution box and the load system are electrically connected with the vehicle control unit through CAN lines.
The multi-power-source power system of the hydrogen energy automobile, provided by the invention, has the defects of delayed power response, slow power response, incapability of energy recovery and the like of the hydrogen fuel cell automobile, the power battery and the super capacitor are added, an accelerator pedal can be stepped when the automobile starts, the output of the fuel battery is delayed and the power response is slow, the power battery and the super capacitor can be used for outputting energy or supplementing energy to solve the problem of insufficient power of the whole automobile, and the energy supply of the power battery and the super capacitor can be cut off after the power of the fuel battery is increased;
the discharge rate of the super capacitor adopted by the invention can reach several times of that of a power battery, and the matching of the power battery and an auxiliary energy system of the super capacitor has great advantages in energy storage and discharge rates;
the invention relates to a hydrogen fuel cell vehicle, which is characterized in that a power battery and a super capacitor are added, when the vehicle slides, a vehicle control unit calculates the deceleration and the torque of energy recovery needed currently, the torque of the sliding energy recovery is sent to a driving motor system, the driving motor system controls a motor to realize the recovery of the sliding energy, the energy is recovered into the power battery and the super capacitor, the braking energy recovery is the same principle, the vehicle control unit calculates the deceleration needed currently and the torque capable of recovering the braking energy while a driver steps on a braking pedal, the driving motor system controls the motor to execute, and the braking energy is recovered into the power battery and the super capacitor.
Drawings
Fig. 1 is a schematic structural diagram of a multi-power-source power system of a hydrogen energy vehicle according to the present invention.
1. A fuel cell; 2. a power battery; 3. a super capacitor; 4. a first high voltage distribution box; 5. a load system; 51. a drive motor system; 511. a motor; 512. a motor controller; 52. an electrically controlled hydraulic power steering system; 53. a three-in-one module; 531. a second high voltage distribution box; 532. a high pressure fan control system; 533. reducing the voltage of DCDC; 6. a fuel cell voltage booster; 7. a vehicle control unit; 8. a bidirectional DCDC; 9. a rear axle.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the multi-power-source power system of the hydrogen energy vehicle of the invention comprises a fuel cell 1, a power cell 2, a super capacitor 3 and a first high-voltage distribution box 4; the fuel cell 1 is electrically connected with the first high-voltage distribution box 4 through a fuel cell booster 6, the power cell 2 and the super capacitor 3 are electrically connected with the first high-voltage distribution box 4, the first high-voltage distribution box 4 is electrically connected with a load system 5 of an automobile, and the fuel cell 1, the fuel cell booster 6, the power cell 2, the super capacitor 3, the first high-voltage distribution box 4 and the load system 5 are electrically connected with a vehicle controller 7.
The multi-power-source power system of the hydrogen energy automobile, provided by the invention, has the defects of delayed power response, slow power response, incapability of energy recovery and the like of the hydrogen fuel battery 1, the power battery 2 and the super capacitor 3 are added, an accelerator pedal can be stepped down when the automobile starts, the output of the fuel battery 1 is delayed and the power response is slow, the power battery 2 and the super capacitor 3 can be used for outputting or supplementing energy firstly, so that the problem of insufficient power of the whole automobile is solved, and after the power of the fuel battery 1 is increased, the energy supply of the power battery 2 and the super capacitor 3 can be cut off;
the discharge multiplying power of the super capacitor 3 adopted by the invention can reach several times of that of the power battery 2, and the matching of the auxiliary energy systems of the power battery 2 and the super capacitor 3 has great advantages in energy storage and discharge multiplying power;
aiming at the defects that the hydrogen fuel cell 1 automobile can not recover energy and the like, the invention adds the power battery 2 and the super capacitor 3, when the automobile slides, the vehicle control unit 7 calculates the current needed deceleration and the torque for recovering the energy, sends the torque for recovering the sliding energy to the driving motor system 51, the driving motor system 51 controls the motor 511 to recover the sliding energy, the energy is recovered into the power battery 2 and the super capacitor 3, the recovery of the braking energy is the same principle, the vehicle control unit 7 calculates the current needed deceleration and the torque for recovering the braking energy when a driver steps on a braking pedal, the driving motor system 51 controls the motor 511 to execute, and the energy is recovered into the power battery 2 and the super capacitor 3.
The present invention uses the fuel cell 1 plus the fuel cell booster 6 as the primary high voltage energy source. The fuel cell 1 is used as a fuel cell booster 6 for providing energy after electrochemical reaction of hydrogen and oxygen, and provides main high-voltage energy for a finished automobile high-voltage system after boosting.
The power battery 2 and the super capacitor 3 are used as auxiliary power energy sources, the auxiliary power energy sources can support discharging and charging, and the auxiliary power energy sources are used as energy recovery terminals to store energy.
Optionally, the power battery 2 is directly connected with a high-voltage bus of the whole vehicle through a first high-voltage distribution box 4;
optionally, the super capacitor 3 is connected to the first high-voltage distribution box 4 through the bidirectional DCDC8, and the first high-voltage distribution box 4 is connected to the high-voltage bus of the whole vehicle after passing through the bidirectional DCDC 8;
the vehicle control unit 7 collects signals such as an accelerator opening degree signal, a brake signal and a gear position to analyze the behavior of a driver, and realizes functions of vehicle high-voltage power-on and power-off, drive control, energy management, fault diagnosis and processing and the like;
the voltage platform of the whole vehicle high-voltage system can be 300V, 500V, 700V and the like;
the load system 5 may comprise a drive motor system 51 and an electrically controlled hydraulic power steering system 52.
The electric control hydraulic power-assisted steering system 52 controls the circulation of steering liquid through the motor 511 to provide power assistance, and the electric control hydraulic power-assisted steering system 52 is adopted for control, so that the power assistance can be adjusted according to the vehicle speed, the steering portability at low speed can be improved, and the steering hand feeling at high speed can be ensured.
The load system 5 may further include a second high-voltage distribution box 531, a high-voltage fan control system 532, and a step-down DCDC533, the second high-voltage distribution box 531 being electrically connected to the first high-voltage distribution box 4, and the high-voltage fan control system 532 and the step-down DCDC533 being electrically connected to the second high-voltage distribution box 531. The electricity enters the second high-voltage distribution box 531 from the first high-voltage distribution box 4, and then enters the high-voltage fan control system 532 and the step-down DCDC533 from the second high-voltage distribution box 531.
The power requirement of the hydrogen fuel cell 1 on the cooling fan is higher, so that the problem that the fan has a large load on the voltage-reducing DCDC533 from high voltage to low voltage is solved, the high-voltage fan control system 532 is adopted, the fan is driven by high-voltage power supply, the low-voltage load of the voltage-reducing DCDC533 is perfectly reduced, and the rated power, the volume and the weight of the voltage-reducing DCDC533 can be reduced.
The trinity module 53 of second high tension switchgear 531, high tension fan control system 532 and step-down DCDC533 constitution saves 2 controllers, reduces the pencil, reduce cost.
The first high-voltage distribution box 4 provides a high-voltage relay, a fuse, and the like, and is connected between the energy system and the load system 5, while being connected to the second high-voltage distribution box 531.
The driving motor system 51 may include a motor 511 and a motor controller 512, wherein the motor controller 512 is electrically connected to the motor 511, and the motor 511 is drivingly connected to the rear axle 9 of the vehicle.
The fuel cell 1, the fuel cell booster 6, the power battery 2, the super capacitor 3, the first high-voltage distribution box 4 and the load system 5 are all electrically connected with the vehicle control unit 7 through CAN lines.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.

Claims (7)

1. The utility model provides a many powers driving system of hydrogen energy automobile which characterized in that: the multi-power-supply high-voltage system comprises a fuel cell (1), a power cell (2), a super capacitor (3) and a first high-voltage distribution box (4); fuel cell (1) through fuel cell booster (6) with first high voltage distribution box (4) electricity is connected, power battery (2) and super capacitor (3) with first high voltage distribution box (4) electricity is connected, first high voltage distribution box (4) are connected with load system (5) electricity of car, fuel cell (1), fuel cell booster (6), power battery (2), super capacitor (3), first high voltage distribution box (4) and load system (5) all are connected with vehicle control unit (7) electricity.
2. The multi-power-supply power system of the hydrogen energy vehicle as claimed in claim 1, characterized in that: the super capacitor (3) is electrically connected with the first high-voltage distribution box (4) through a bidirectional DCDC (8).
3. A hydrogen-powered automotive multi-power-supply power system as claimed in claim 1 or 2, characterized in that: the load system (5) comprises a driving motor system (51) and an electric control hydraulic power steering system (52).
4. A hydrogen-powered automotive multi-power-supply power system as claimed in claim 3, characterized in that: the load system (5) comprises a second high-voltage distribution box (531), a high-voltage fan control system (532) and a voltage reduction DCDC (533), the second high-voltage distribution box (531) is electrically connected with the first high-voltage distribution box (4), and the high-voltage fan control system (532) and the voltage reduction DCDC (533) are electrically connected with the second high-voltage distribution box (531).
5. The multi-power-supply power system of the hydrogen energy vehicle as claimed in claim 4, wherein: and the second high-voltage distribution box (531), the high-voltage fan control system (532) and the voltage reduction DCDC (533) form a three-in-one module (53).
6. A hydrogen-powered automotive multi-power-supply power system as claimed in claim 3, characterized in that: the driving motor system (51) comprises a motor (511) and a motor controller (512), wherein the motor controller (512) is electrically connected with the motor (511), and the motor (511) is in transmission connection with a rear axle (9) of an automobile.
7. The multi-power-supply power system of the hydrogen energy vehicle as claimed in claim 1, characterized in that: the fuel cell (1), the fuel cell booster (6), the power battery (2), the super capacitor (3), the first high-voltage distribution box (4) and the load system (5) are electrically connected with the vehicle control unit (7) through CAN lines.
CN202011590678.1A 2020-12-29 2020-12-29 Multi-power-source power system of hydrogen energy automobile Pending CN112549997A (en)

Priority Applications (1)

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CN202011590678.1A CN112549997A (en) 2020-12-29 2020-12-29 Multi-power-source power system of hydrogen energy automobile

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Application Number Priority Date Filing Date Title
CN202011590678.1A CN112549997A (en) 2020-12-29 2020-12-29 Multi-power-source power system of hydrogen energy automobile

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CN112549997A true CN112549997A (en) 2021-03-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115817208A (en) * 2022-12-19 2023-03-21 北京氢沄新能源科技有限公司 Automobile power system and power supply control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115817208A (en) * 2022-12-19 2023-03-21 北京氢沄新能源科技有限公司 Automobile power system and power supply control method thereof

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