CN110014860B - Vehicle super capacitor discharging method and control system - Google Patents

Vehicle super capacitor discharging method and control system Download PDF

Info

Publication number
CN110014860B
CN110014860B CN201710930372.8A CN201710930372A CN110014860B CN 110014860 B CN110014860 B CN 110014860B CN 201710930372 A CN201710930372 A CN 201710930372A CN 110014860 B CN110014860 B CN 110014860B
Authority
CN
China
Prior art keywords
super capacitor
generator
super
set value
discharging
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.)
Active
Application number
CN201710930372.8A
Other languages
Chinese (zh)
Other versions
CN110014860A (en
Inventor
张广利
杨泗鹏
乔理想
王志中
靳超
韩光辉
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.)
Yutong Bus Co Ltd
Original Assignee
Zhengzhou Yutong Bus 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.)
Filing date
Publication date
Application filed by Zhengzhou Yutong Bus Co Ltd filed Critical Zhengzhou Yutong Bus Co Ltd
Priority to CN201710930372.8A priority Critical patent/CN110014860B/en
Publication of CN110014860A publication Critical patent/CN110014860A/en
Application granted granted Critical
Publication of CN110014860B publication Critical patent/CN110014860B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The invention provides a vehicle super-capacitor discharging method and a control system, when super-capacitor or electric equipment connected with the super-capacitor needs maintenance, a vehicle is controlled to stop and a clutch is controlled to separate, and a power battery is controlled to forbid discharging to the super-capacitor; and the super capacitor starts to discharge, the generator is controlled to rotate, and the generator drives the engine to idle until the super capacitor is discharged. External discharging equipment is not needed, high-voltage line connection is not needed, and the vehicle is simple to operate and maintain, and is safer and more reliable; the working capacity of the generator is further considered, when the voltage of the super capacitor is detected to be smaller than a second set value in the discharging process, the generator is not enough to drive the engine to rotate, at the moment, the generator is controlled to continue to consume the energy generated by discharging of the super capacitor with the set torque, and the generator is prevented from being damaged.

Description

Vehicle super capacitor discharging method and control system
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a vehicle super-capacitor discharging method and a vehicle super-capacitor discharging control system.
Background
A hybrid vehicle refers to a vehicle equipped with two power sources, a thermal power source (generated by a conventional gasoline engine or diesel engine) and an electric power source (a battery and an electric motor), simultaneously. The motor is used on the hybrid electric vehicle, so that the power system can be flexibly regulated and controlled according to the actual operation condition requirement of the whole vehicle, and the engine can work in an area with the best comprehensive performance, thereby reducing oil consumption and emission. The electric energy source of the motor is usually a storage battery and a super capacitor, and the super capacitor used in the hybrid electric vehicle is a high-voltage high-power super capacitor.
The use of supercapacitors as high voltage high power energy storage is known, however, the high current low resistance characteristic of supercapacitors presents a problem during the charging of the supercapacitors that have been completely discharged and during the discharging of the supercapacitors that have been charged. That is, the capacitor cannot normally be connected to the high voltage power supply by simply closing the power contactor relay switch due to the low impedance of the super capacitor, and if so, the initial connection of the super capacitor and the charging circuit appears as if the charging circuit is shorted, and the high current inrush from the charging circuit into the super capacitor can easily damage the charging circuit.
At present, a plurality of vehicle high-voltage systems of plug-in hybrid electric buses are connected in the bus market as shown in fig. 1, power supply of high-voltage components (such as a motor controller, a steering motor controller and the like) is directly provided by a super capacitor, energy conversion is carried out between the super capacitor and a power battery through a bidirectional chopping controller, and the bidirectional chopping controller can convert energy of the power battery to be transmitted to the super capacitor and also can convert energy of the super capacitor to be transmitted to the battery. If need maintain super capacitor or high-voltage spare part in the vehicle operation, in order to ensure operation safety, just need discharge to super capacitor, discharge to hybrid bus super capacitor and adopt external discharge equipment to discharge more, because of the bus company circuit is many, the vehicle is many, and the vehicle dispersion, need reserve a large amount of discharge equipment in order to satisfy the application demand to after-sales maintenance, and still need carry out the equipment connection in operation process, and need possess the personnel of high-voltage electrician qualification and operate, vehicle maintainability is relatively poor.
Disclosure of Invention
The invention aims to provide a vehicle super-capacitor discharging method and a vehicle super-capacitor discharging control system, which are used for solving the problem of complex operation caused by the need of using external discharging equipment when the super-capacitor is controlled to discharge in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a vehicle super capacitor discharging method comprises the following steps:
1) when the super capacitor or the electric equipment connected with the super capacitor needs maintenance, controlling the vehicle to stop and the clutch to be separated, and controlling the power battery to forbid discharging to the super capacitor;
2) and the super capacitor starts to discharge, the generator is controlled to rotate, and the generator drives the engine to idle until the super capacitor is discharged.
Further, when the voltage of the super capacitor is smaller than or equal to the first set value, the generator stops working, and discharging of the super capacitor is completed.
Further, in the discharging process of the super capacitor, whether the voltage of the super capacitor is larger than a second set value or not needs to be judged, when the voltage of the super capacitor is larger than the second set value, the generator continues to drive the engine to idle, and when the voltage of the super capacitor is smaller than or equal to the first set value, the generator stops working, and discharging of the super capacitor is completed.
Further, the second set value is 100V.
Further, before step 2), it is controlled to stop the supply of fuel/air to the engine.
The invention also provides a vehicle super-capacitor discharge control system, which comprises a controller, wherein the controller is used for controlling the vehicle to stop and the clutch to be separated when the super-capacitor or electric equipment connected with the super-capacitor needs maintenance, and controlling the power battery to forbid discharging to the super-capacitor; and the super capacitor starts to discharge, the generator is controlled to rotate, and the generator drives the engine to idle until the super capacitor is discharged.
Further, when the voltage of the super capacitor is smaller than or equal to the first set value, the generator stops working, and discharging of the super capacitor is completed.
Further, in the discharging process of the super capacitor, whether the voltage of the super capacitor is larger than a second set value or not needs to be judged, when the voltage of the super capacitor is larger than the second set value, the generator continues to drive the engine to idle, and when the voltage of the super capacitor is smaller than or equal to the first set value, the generator stops working, and discharging of the super capacitor is completed.
Further, the second set value is 100V.
Further, the fuel/air supply to the engine is stopped under the control of the controller before the super capacitor is discharged.
The invention has the beneficial effects that:
when the super capacitor or the electric equipment connected with the super capacitor needs maintenance, the vehicle is controlled to stop and the clutch is controlled to be separated, and the power battery is controlled to forbid discharging to the super capacitor; and the super capacitor starts to discharge, the generator is controlled to rotate, and the generator drives the engine to idle until the super capacitor is discharged. According to the method provided by the invention, in the discharging process of the super capacitor, no external discharging equipment is needed, no high-voltage line connection is needed, and the vehicle is simpler to operate and maintain, and is safer and more reliable.
The working capacity of the generator is further considered, when the voltage of the super capacitor is detected to be smaller than a second set value in the discharging process, the generator is not enough to drive the engine to rotate, the generator is controlled to continue to consume the energy generated by discharging of the super capacitor at the set torque, because the generator cannot drive the engine to rotate in the process of driving the engine to work, if the generator continues to work at the moment, the generator is damaged.
Drawings
FIG. 1 is a schematic diagram of a prior art vehicle high pressure system connection;
FIG. 2 is a connection diagram of the vehicle model architecture of the present invention;
FIG. 3 is a schematic diagram of the discharge process of the super capacitor according to the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings:
the power part of the hybrid power bus is mainly composed of a driving motor, a generator and an engine and is shown in figure 2, the driving motor is connected with the generator through a clutch, the driving motor and the generator can work independently during clutch separation, based on the connection structure and the working characteristics, the clutch separation is controlled under the parking condition, the generator is controlled by a controller to drag the engine to idle so as to complete the electric quantity consumption of the super capacitor, and the super capacitor is discharged.
The super-capacitor discharging method of the hybrid power bus disclosed by the invention comprises the following steps of:
1) when the super capacitor or the electric equipment connected with the super capacitor needs maintenance, an instruction is sent to the whole vehicle controller through the upper computer, so that the vehicle works in a super capacitor discharging mode, and the clutch is controlled to be in a separation state in a parking state; the vehicle control unit controls the engine oil supply/air supply system to stop supplying oil/air to the engine; the vehicle control unit controls the driving motor to be in a stop state, stops the driving motor to work, controls the bidirectional chopping controller to be in the stop state, and prohibits the power battery from charging the super capacitor.
2) In the state, the lower limit of the working voltage is adjusted to be V1 by the generator controller (V1 is the voltage for finishing the discharge of the super capacitor and is set below 36V safety voltage, and V1 is set to be 20V), then the vehicle controller controls the generator to work in a rotating speed control mode, so that the generator rotates at the rotating speed n1(where set to engine idle, n)1650rpm, or other rotational speed) to start discharging the super capacitor, and to control the generator to a set rotational speed n1The engine is dragged to idle, and the electric quantity generated when the super capacitor discharges is consumed.
3) Detecting the discharge voltage of the super capacitor in real time, and when the voltage of the super capacitor is lower than V2, wherein, according to the capability of the generator controller of the system, the present embodiment sets V2 to 100V, which indicates that the output capability of the generator cannot meet the requirement of continuing to use n1The engine is dragged by the rotating speed, the generator is controlled to work in a torque control mode at the moment, the generator is not enough to drag the engine in the torque control mode, the generator is blocked and continuously discharged by the set torque T1 at the moment, and damage of the generator is avoided, wherein the torque T1 is set to be 100N.m to drag the engine, the super capacitor is continuously discharged, and the generator stops working until the voltage of the super capacitor is V1, so that the discharge of the super capacitor is completed.
The super capacitor discharge is realized through the generator assembled on the hybrid power bus, the working capacity of the generator is considered, and when the generator is not enough to drag the generator to rotate and the working voltage of the generator reaches a set value, the generator is controlled to stop working, so that the damage of the generator is avoided. In the discharging process of the super capacitor, external discharging equipment is not needed, high-voltage line connection is not needed, and the super capacitor is safer and more reliable.
The specific embodiments are given above, but the present invention is not limited to the above-described embodiments. The basic idea of the present invention lies in the above basic scheme, and it is obvious to those skilled in the art that no creative effort is needed to design various modified models, formulas and parameters according to the teaching of the present invention. Variations, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention, and still fall within the scope of the invention.

Claims (4)

1. A vehicle super capacitor discharging method is characterized by comprising the following steps:
1) when the super capacitor or the electric equipment connected with the super capacitor needs maintenance, controlling the vehicle to stop and the clutch to be separated, and controlling the power battery to forbid discharging to the super capacitor;
2) the super capacitor starts to discharge, the generator is controlled to rotate, and the generator drives the engine to idle until the super capacitor is discharged;
whether the voltage of the super capacitor is larger than a second set value or not is judged, when the voltage of the super capacitor is larger than the second set value, the generator drives the engine to idle at a set rotating speed, when the voltage of the super capacitor is lower than the second set value and larger than the first set value, the generator is controlled to work in a torque control mode, the discharging is continued by the torque stalling of 100N.m, and when the voltage of the super capacitor is smaller than or equal to the first set value, the generator stops working, and the discharging of the super capacitor is completed;
the second set value is 100V, and the first set value is 20V.
2. The vehicle supercapacitor discharge method according to claim 1, wherein before step 2), it is controlled to stop the supply of oil/gas to the engine.
3. The vehicle super-capacitor discharge control system is characterized by comprising a controller, wherein the controller is used for controlling the vehicle to stop and a clutch to be separated when super-capacitors or electric equipment connected with the super-capacitors need maintenance, and controlling a power battery to prohibit discharging to the super-capacitors; the super capacitor starts to discharge, the generator is controlled to rotate, and the generator drives the engine to idle until the super capacitor is discharged;
in the discharging process of the super capacitor, whether the voltage of the super capacitor is larger than a second set value or not needs to be judged, when the voltage of the super capacitor is larger than the second set value, the generator drives the engine to idle at a set rotating speed, when the voltage of the super capacitor is lower than the second set value and larger than the first set value, the generator is controlled to work in a torque control mode, the discharging is continued by using 100N.m of torque locked rotor, and when the voltage of the super capacitor is smaller than or equal to the first set value, the generator stops working, and the discharging of the super capacitor is completed; the second set value is 100V, and the first set value is 20V.
4. The vehicle supercapacitor discharge control system according to claim 3, wherein the controller controls the stopping of the supply of oil/gas to the engine before the supercapacitor discharges.
CN201710930372.8A 2017-10-09 2017-10-09 Vehicle super capacitor discharging method and control system Active CN110014860B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710930372.8A CN110014860B (en) 2017-10-09 2017-10-09 Vehicle super capacitor discharging method and control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710930372.8A CN110014860B (en) 2017-10-09 2017-10-09 Vehicle super capacitor discharging method and control system

Publications (2)

Publication Number Publication Date
CN110014860A CN110014860A (en) 2019-07-16
CN110014860B true CN110014860B (en) 2021-12-17

Family

ID=67186493

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710930372.8A Active CN110014860B (en) 2017-10-09 2017-10-09 Vehicle super capacitor discharging method and control system

Country Status (1)

Country Link
CN (1) CN110014860B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111997136A (en) * 2020-09-03 2020-11-27 山东临工工程机械有限公司 Method and device for controlling discharge of hybrid excavator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101622767A (en) * 2007-03-13 2010-01-06 株式会社小松制作所 Generator motor driving device and method for discharging capacitor of generator motor driving device
CN102897114A (en) * 2011-07-28 2013-01-30 现代自动车株式会社 Discharge technique for residual high voltage in hybrid vehicle and method thereof
CN202827406U (en) * 2012-09-21 2013-03-27 金龙联合汽车工业（苏州）有限公司 High-pressure discharge system used for hybrid power automobile

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007195352A (en) * 2006-01-20 2007-08-02 Nissan Motor Co Ltd Power supply unit for motor
JP6459945B2 (en) * 2015-12-11 2019-01-30 スズキ株式会社 Control device for electric vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101622767A (en) * 2007-03-13 2010-01-06 株式会社小松制作所 Generator motor driving device and method for discharging capacitor of generator motor driving device
CN102897114A (en) * 2011-07-28 2013-01-30 现代自动车株式会社 Discharge technique for residual high voltage in hybrid vehicle and method thereof
CN202827406U (en) * 2012-09-21 2013-03-27 金龙联合汽车工业（苏州）有限公司 High-pressure discharge system used for hybrid power automobile

Also Published As

Publication number Publication date
CN110014860A (en) 2019-07-16

Similar Documents

Publication Publication Date Title
CN202294792U (en) Range extender system of electric vehicle and electric vehicle
CN102501770B (en) Electrical system for pure electric vehicle
CN104163111B (en) Battery-driven car compound energy based on two-way DC/DC increases journey system
CN102343877B (en) Low voltage bus stability
CN101716879B (en) Method for charging and discharging super capacitor module of a hybrid power automobile
CN104691445B (en) Low-voltage power supply system used for vehicle and control method of low-voltage power supply system
CN107187440B (en) Power-on and power-off time sequence control method of plug-in hybrid electric vehicle
CN101704344A (en) Control system for mileage adder of pure electric automobile and control method thereof
CN110877607B (en) Self-power-generation limping system and method for hybrid electric vehicle
JP2016510706A (en) Operation method and arrangement of hybrid electric vehicle
CN203713586U (en) integrated control system for range extender of electric motor coach
CN108216086A (en) A kind of DC-DC converter and its control method of the micro- mixing systems of 48V
CN101519074A (en) Control method of externally rechargeable type mixed power automobile generator group
CN110661309A (en) External charging method and device for vehicle
CN108973831B (en) External power supply system and method for mobile charging vehicle
CN214314686U (en) Control system for preventing vehicle storage battery from being insufficient
CN110014860B (en) Vehicle super capacitor discharging method and control system
CN112109696B (en) Electric control system of chassis of parallel oil-electricity hybrid airport fire engine
CN104763546A (en) High and low voltage combined start control method for vehicle
CN116005750A (en) Large excavator start-stop control system and control method
CN108466614B (en) Hybrid power bus engine starting method
CN206983743U (en) Electronic vehicle intelligent distance increasing unit
CN112660049A (en) Control system and control method for preventing vehicle storage battery from being lack of power
CN211893112U (en) Direct current power generation and power management system for engineering vehicle
CN108798963B (en) Starting system based on fuel engine and automobile

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
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province

Patentee after: Yutong Bus Co.,Ltd.

Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou

Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd.

CP03 Change of name, title or address