CN111873806A - Energy recovery system and method for electro-hydraulic composite braking system - Google Patents

Energy recovery system and method for electro-hydraulic composite braking system Download PDF

Info

Publication number
CN111873806A
CN111873806A CN202010779092.3A CN202010779092A CN111873806A CN 111873806 A CN111873806 A CN 111873806A CN 202010779092 A CN202010779092 A CN 202010779092A CN 111873806 A CN111873806 A CN 111873806A
Authority
CN
China
Prior art keywords
unit
energy
braking
hydraulic
brake
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
CN202010779092.3A
Other languages
Chinese (zh)
Inventor
郑竹安
石小龙
熊新
翟豪瑞
戴广金
胡学敏
邵俊
肖海宁
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.)
Yancheng Institute of Technology
Original Assignee
Yancheng Institute of Technology
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.)
Filing date
Publication date
Application filed by Yancheng Institute of Technology filed Critical Yancheng Institute of Technology
Priority to CN202010779092.3A priority Critical patent/CN111873806A/en
Publication of CN111873806A publication Critical patent/CN111873806A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • 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

Landscapes

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

Abstract

The invention discloses an energy recovery system and method of an electro-hydraulic composite braking system, which comprises a motor braking unit, a hydraulic braking unit, a braking driving unit, a CPU (central processing unit) processor and an energy recovery unit, wherein the motor braking unit and the hydraulic braking unit are respectively connected with the CPU processor through the braking driving unit; the motor braking energy and the hydraulic braking energy can be recycled, the braking mechanical energy is converted into electric energy to be recycled, meanwhile, the battery management system can monitor the state of the energy storage battery in real time, the battery is ensured to be in the best working state, and the service life of the automobile battery is prolonged.

Description

Energy recovery system and method for electro-hydraulic composite braking system
Technical Field
The invention relates to the technical field of energy recovery systems, in particular to an energy recovery system and method of an electro-hydraulic composite braking system.
Background
With the increasing depletion of petroleum and other stone resources and the increasing severe environmental pollution, new energy vehicles are increasingly popularized. Various conventional vehicle manufacturers also strive to develop their own electric or hybrid vehicle models. The electric vehicle not only uses clean electric energy to drive the vehicle to run, but also can recycle energy generated in the braking process.
An energy recovery system is arranged in the current electro-hydraulic compound brake system, but the energy recovery efficiency is low, so that improvement is needed.
Disclosure of Invention
The invention aims to provide an energy recovery system and method of an electro-hydraulic composite braking system, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an energy recovery system of an electro-hydraulic composite braking system comprises a motor braking unit, a hydraulic braking unit, a braking driving unit, a CPU (central processing unit) processor and an energy recovery unit, wherein the motor braking unit and the hydraulic braking unit are respectively connected with the CPU processor through the braking driving unit, and the CPU processor is connected with an energy storage system through the energy recovery unit; the motor braking unit is used for controlling the hub motor to brake; the hydraulic braking unit is used for controlling the hydraulic cylinder to perform braking, and the energy recovery unit is used for recovering braking energy; the energy storage system is used for receiving and converting the recovered braking energy and realizing energy storage and reutilization.
Preferably, the hydraulic brake system further comprises a mode switching unit, the mode switching unit is connected with the CPU, and the mode switching unit is used for switching the motor braking mode and the hydraulic braking mode.
Preferably, the energy recovery unit comprises an energy conversion unit and an inverter unit, wherein the energy conversion unit is used for converting mechanical energy during braking into electric energy and converting the electric energy into mechanical energy for driving a vehicle during driving; the inversion unit is connected with the energy conversion unit and used for converting alternating current and direct current.
Preferably, the energy storage system comprises an SOC acquisition unit, a battery management system, an energy storage battery and a DC/DC conversion module, the energy storage battery is connected with the battery management system and the SOC acquisition unit respectively, the input end of the DC/DC conversion module is connected with the inversion unit, and the output end of the DC/DC conversion module is connected with the battery management system.
Preferably, the using method comprises the following steps:
A. when a vehicle needs to be braked in the running process, firstly, a CPU (central processing unit) collects the real-time speed, and if the speed is greater than a preset value, a motor brake unit and a hydraulic brake unit are controlled to work simultaneously to respectively perform motor braking and hydraulic braking;
B. the energy recovery unit converts mechanical energy during braking into electric energy and sends the electric energy to the energy storage system;
C. an inversion unit in the energy recovery unit converts alternating current and direct current, and the converted electric energy is converted by a DC/DC conversion module and then transmitted to a battery management system;
D. the battery management system sends an energy storage instruction to the energy storage battery to collect and store the electric quantity;
E. meanwhile, the SOC acquisition unit acquires the working state of the energy storage battery in real time, and the normal work of the energy storage system is ensured.
Preferably, the battery management system in step C determines whether the state of charge value of the energy storage battery is smaller than a preset upper limit value, if so, the charging operation is performed, and if not, the braking electric energy is not recovered.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple working principle, can realize the recycling of the vehicle electro-hydraulic braking energy, and has good energy-saving and environment-friendly performance; the motor braking energy and the hydraulic braking energy can be recycled, the braking mechanical energy is converted into electric energy to be recycled, meanwhile, the battery management system can monitor the state of the energy storage battery in real time, the battery is ensured to be in the best working state, and the service life of the automobile battery is prolonged.
Drawings
FIG. 1 is a block diagram of the control scheme of the present invention;
FIG. 2 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the present invention provides a technical solution: an energy recovery system of an electro-hydraulic composite braking system comprises a motor braking unit 1, a hydraulic braking unit 2, a braking driving unit 3, a CPU (central processing unit) processor 4 and an energy recovery unit 5, wherein the motor braking unit 1 and the hydraulic braking unit 2 are respectively connected with the CPU processor 4 through the braking driving unit 3, and the CPU processor 4 is connected with an energy storage system 6 through the energy recovery unit 5; the motor braking unit is used for controlling the hub motor to brake; the hydraulic braking unit is used for controlling the hydraulic cylinder to perform braking, and the energy recovery unit is used for recovering braking energy; the energy storage system is used for receiving and converting the recovered braking energy and realizing energy storage and reutilization; the brake system further comprises a mode switching unit 7, wherein the mode switching unit 7 is connected with the CPU 4, and the mode switching unit 7 is used for switching a motor braking mode and a hydraulic braking mode.
In the invention, the energy recovery unit 5 comprises an energy conversion unit 8 and an inversion unit 9, wherein the energy conversion unit 8 is used for converting mechanical energy during braking into electric energy and converting the electric energy into mechanical energy for driving a vehicle during driving; the inversion unit 9 is connected with the energy conversion unit 8 and is used for converting alternating current and direct current; the energy storage system 6 comprises an SOC acquisition unit 10, a battery management system 11, an energy storage battery 12 and a DC/DC conversion module 13, wherein the energy storage battery 12 is respectively connected with the battery management system 11 and the SOC acquisition unit 10, the input end of the DC/DC conversion module 13 is connected with the inversion unit 9, and the output end of the DC/DC conversion module is connected with the battery management system 11.
The working principle is as follows: the using method of the invention comprises the following steps:
A. when a vehicle needs to be braked in the running process, firstly, a CPU (central processing unit) collects the real-time speed, and if the speed is greater than a preset value, a motor brake unit and a hydraulic brake unit are controlled to work simultaneously to respectively perform motor braking and hydraulic braking;
B. the energy recovery unit converts mechanical energy during braking into electric energy and sends the electric energy to the energy storage system;
C. an inversion unit in the energy recovery unit converts alternating current and direct current, and the converted electric energy is converted by a DC/DC conversion module and then transmitted to a battery management system;
D. the battery management system sends an energy storage instruction to the energy storage battery to collect and store the electric quantity;
E. meanwhile, the SOC acquisition unit acquires the working state of the energy storage battery in real time, and the normal work of the energy storage system is ensured.
And C, judging whether the state of charge value of the energy storage battery is smaller than a preset upper limit value or not by the battery management system, if so, carrying out charging operation, and if not, not recovering the braking electric energy.
In conclusion, the working principle of the invention is simple, the recovery and the reutilization of the vehicle electro-hydraulic braking energy can be realized, and the energy-saving and environment-friendly performance is good; the motor braking energy and the hydraulic braking energy can be recycled, the braking mechanical energy is converted into electric energy to be recycled, meanwhile, the battery management system can monitor the state of the energy storage battery in real time, the battery is ensured to be in the best working state, and the service life of the automobile battery is prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides an electricity liquid composite braking system energy recuperation system which characterized in that: the brake system comprises a motor brake unit (1), a hydraulic brake unit (2), a brake driving unit (3), a CPU (Central processing Unit) processor (4) and an energy recovery unit (5), wherein the motor brake unit (1) and the hydraulic brake unit (2) are respectively connected with the CPU processor (4) through the brake driving unit (3), and the CPU processor (4) is connected with an energy storage system (6) through the energy recovery unit (5); the motor braking unit is used for controlling the hub motor to brake; the hydraulic braking unit is used for controlling the hydraulic cylinder to perform braking, and the energy recovery unit is used for recovering braking energy; the energy storage system is used for receiving and converting the recovered braking energy and realizing energy storage and reutilization.
2. The energy recovery system of an electro-hydraulic compound brake system according to claim 1, wherein: the brake system further comprises a mode switching unit (7), the mode switching unit (7) is connected with the CPU (4), and the mode switching unit (7) is used for switching the motor braking mode and the hydraulic braking mode.
3. The energy recovery system of an electro-hydraulic compound brake system according to claim 1, wherein: the energy recovery unit (5) comprises an energy conversion unit (8) and an inversion unit (9), wherein the energy conversion unit (8) is used for converting mechanical energy during braking into electric energy and converting the electric energy into mechanical energy for driving a vehicle during driving; the inversion unit (9) is connected with the energy conversion unit (8) and is used for converting alternating current and direct current.
4. The energy recovery system of an electro-hydraulic compound brake system according to claim 1, wherein: the energy storage system (6) comprises an SOC acquisition unit (10), a battery management system (11), an energy storage battery (12) and a DC/DC conversion module (13), wherein the energy storage battery (12) is respectively connected with the battery management system (11) and the SOC acquisition unit (10), the input end of the DC/DC conversion module (13) is connected with the inversion unit (9), and the output end of the DC/DC conversion module is connected with the battery management system (11).
5. The use method for realizing the energy recovery system of the electro-hydraulic compound brake system as claimed in claim 1 is characterized in that: the using method comprises the following steps:
A. when a vehicle needs to be braked in the running process, firstly, a CPU (central processing unit) collects the real-time speed, and if the speed is greater than a preset value, a motor brake unit and a hydraulic brake unit are controlled to work simultaneously to respectively perform motor braking and hydraulic braking;
B. the energy recovery unit converts mechanical energy during braking into electric energy and sends the electric energy to the energy storage system;
C. an inversion unit in the energy recovery unit converts alternating current and direct current, and the converted electric energy is converted by a DC/DC conversion module and then transmitted to a battery management system;
D. the battery management system sends an energy storage instruction to the energy storage battery to collect and store the electric quantity;
E. meanwhile, the SOC acquisition unit acquires the working state of the energy storage battery in real time, and the normal work of the energy storage system is ensured.
6. The use method of the energy recovery system of the electro-hydraulic compound brake system according to claim 5, characterized by comprising the following steps: and C, judging whether the state of charge value of the energy storage battery is smaller than a preset upper limit value or not by the battery management system, if so, carrying out charging operation, and if not, not recovering the braking electric energy.
CN202010779092.3A 2020-08-05 2020-08-05 Energy recovery system and method for electro-hydraulic composite braking system Withdrawn CN111873806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010779092.3A CN111873806A (en) 2020-08-05 2020-08-05 Energy recovery system and method for electro-hydraulic composite braking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010779092.3A CN111873806A (en) 2020-08-05 2020-08-05 Energy recovery system and method for electro-hydraulic composite braking system

Publications (1)

Publication Number Publication Date
CN111873806A true CN111873806A (en) 2020-11-03

Family

ID=73210824

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010779092.3A Withdrawn CN111873806A (en) 2020-08-05 2020-08-05 Energy recovery system and method for electro-hydraulic composite braking system

Country Status (1)

Country Link
CN (1) CN111873806A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477401A (en) * 1987-09-16 1989-03-23 Aisin Aw Co Vehicle braking power control device utilizing motor braking power
CN103818264A (en) * 2014-02-26 2014-05-28 浙江工业大学之江学院工业研究院 Electric car regenerative braking system and energy recovery method thereof
CN107444393A (en) * 2017-07-20 2017-12-08 北京新能源汽车股份有限公司 Brakes control method and device
CN108819726A (en) * 2018-05-04 2018-11-16 合肥工业大学 Brake energy recovery control method and system based on brake efficiency consistency

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477401A (en) * 1987-09-16 1989-03-23 Aisin Aw Co Vehicle braking power control device utilizing motor braking power
CN103818264A (en) * 2014-02-26 2014-05-28 浙江工业大学之江学院工业研究院 Electric car regenerative braking system and energy recovery method thereof
CN107444393A (en) * 2017-07-20 2017-12-08 北京新能源汽车股份有限公司 Brakes control method and device
CN108819726A (en) * 2018-05-04 2018-11-16 合肥工业大学 Brake energy recovery control method and system based on brake efficiency consistency

Similar Documents

Publication Publication Date Title
CN102358285B (en) Range-extending electric vehicle control system and method
CN100404306C (en) Mixed energy driving system of vehicle with fuel batteries
CN110576750A (en) braking energy recovery system of hydrogen fuel cell automobile
CN101648523A (en) Recycling system of braking energy of electric automobiles and control method thereof
CN1970359A (en) Power system of charged type hybrid power electric automobile
CN103192721B (en) Braking system and braking method of double-shaft driven electric vehicle
CN101734251A (en) Stroke-increasing electric automobile control system and control method thereof
CN102166962A (en) Brake energy feedback control system of pure electric automobile
CN102616144A (en) Method and device for controlling safe operation of electric automobile
CN105365595A (en) Power battery and super capacitor power system for electric vehicle and controlling method
CN105253028A (en) Control method and device for hybrid power supply stroke-adding type electric vehicle
CN205097969U (en) Electricity mixes electric automobile power battery and super capacitor driving system
CN201646423U (en) Environmentally friendly electric vehicle
CN102019889B (en) Electric vehicle and control system thereof
CN101961985A (en) Control system of pure electromobile mileage increaser and control method thereof
CN103538482B (en) A kind of can power-assisted and reclaim the automobile start-stop system of braking energy
CN205113038U (en) Composite power source increases controlling means of form electric motor car
CN202033431U (en) Electric vehicle regenerative braking and energy system comprehensive experimental apparatus
CN109228957A (en) A kind of new-energy automobile electricity detects automatically and the device of included energy-saving effect
CN110329109B (en) Control method of fuel cell hydrogen energy automobile energy management system
CN111873806A (en) Energy recovery system and method for electro-hydraulic composite braking system
CN203126503U (en) Hybrid electric vehicle using composite power supply power system
CN209488242U (en) Boost type brake energy recovery circuit for electric vehicle
CN212219916U (en) Energy feedback management system of hydrogen fuel automobile
CN210111897U (en) New forms of energy rack rail car frequency conversion actuating system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20201103