CN110239354A - A kind of Passive serial composite power source brake energy recovering system - Google Patents
A kind of Passive serial composite power source brake energy recovering system Download PDFInfo
- Publication number
- CN110239354A CN110239354A CN201910373960.5A CN201910373960A CN110239354A CN 110239354 A CN110239354 A CN 110239354A CN 201910373960 A CN201910373960 A CN 201910373960A CN 110239354 A CN110239354 A CN 110239354A
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- Prior art keywords
- battery
- super capacitor
- power source
- controller
- composite power
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Classifications
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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
- 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
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- 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)
- Stopping Of Electric Motors (AREA)
Abstract
The invention discloses a kind of Passive serial composite power source brake energy recovering systems, including battery, motor, electric machine controller, rectifier bridge, super capacitor, diode, switch and controller, three phase back-emfs only charge to super capacitor by rectifier bridge when regenerative braking, and battery is not involved in energy regenerating；Battery is connected with super capacitor during driving exports electric energy；Prevent battery to super capacitor reverse charging by parallel diode；System can be switched to battery and mode be operated alone to avoid the energy consumption of output electric current on the diode when exporting for a long time；The switching of controller control switch and switching moment is without strict demand, can carry out zero current switching in non-driven state；Controller constantly detects super capacitor end voltage, battery voltage, braking speed, issues the on-off of thyristor in pwm signal control rectifier bridge, realizes the DC chopped-wave to stalling current, control electric braking deceleration.The present invention recycles braking energy using rectifier bridge, improves capacity usage ratio.
Description
Technical field
The invention belongs to electric vehicle engineering fields, and in particular to a kind of Passive serial composite power source Brake energy recovery system
System.
Background technique
Currently, environmental pollution and energy shortage problem promote electric car to rapidly develop, however insufficient driving range, battery
The problems such as service life is short is still the roadblock of Development of Electric Vehicles.Regeneration brake system can convert electric energy for the kinetic energy of vehicle
And store, effectively improve the continual mileage of electric car.
Directly Brake energy recovery can be made battery by heavy current impact into battery, seriously affect the battery longevity
Life, super capacitor have the characteristics that high power density, charge and discharge are fast, therefore it can be had with power battery composition composite power source
Effect improves battery context, extends battery life.
Existing composite power source structure is mainly based on active parallel, and that there are volumes is big, recovery efficiency is low, control is complicated
A series of problems, such as.The problem of series connection composite power source controls etc. there is also circuit protection and stalling current to need to solve.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of Passive serial composite power source braking energies to return
Receipts system to improve capacity usage ratio, while protecting battery for recycling the energy of driving motor Brake stop generation.
The invention adopts the following technical scheme:
A kind of Passive serial composite power source brake energy recovering system, including rectifier bridge, diode D4, super capacitor C, open
It closes and controller, the rectifier bridge and super capacitor C forms recycling circuit, diode D4 is in parallel with super capacitor C, battery B
It connects to form composite power source with super capacitor C by the end switch J1, battery B is individually energized by the end switch J2, controller control
Make the on-off of thyristor in the switching and rectifier bridge of switch.
In above scheme, which further includes electric machine controller K and motor M, the input terminal of electric machine controller K and multiple
It closes power supply to be connected, the output end of electric machine controller K is connected with motor M.
In above scheme, after the super capacitor C-terminal voltage is measured by voltage sensor, it is transferred to controller, control is opened
The switching of pass；The switching of the controller control switch is realized in no current.
In above scheme, after the stalling current in the recycling circuit is obtained by current sensor, it is transferred to controller, it is defeated
The on-off of pwm signal control thyristor out.
The invention has the benefit that
1. system of the present invention in braking process, the kinetic energy of electric car can be converted into electric energy be stored in it is super
It, can be to avoid battery by big in process of regenerative braking while effectively improving electric car continual mileage in grade capacitor
Rush of current, to improve the service life of battery；
2. the present invention uses Passive serial composite power source structure, DC-DC structure is not used, the volume of system structure is reduced
And weight, the energy consumption of component is decreased, can effectively improve capacity usage ratio；
3. the present invention, during driving, super capacitor is protected by the anti-reverse charging of diode, and simultaneity factor can be free
Monocell drive mode is switched to reduce the energy consumption of diode, capacity usage ratio can be improved；
4. the present invention carries out switching in zero current, is conducive to protective switch performance, extends the service life, reduce electricity
Stream impact, and low frequency low cost switch element can be used；
5. the present invention uses controllable rectifier bridge, the DC chopped-wave effect to stalling current is realized, reaches and electric braking is subtracted
The control of speed.
Detailed description of the invention
Below to each width attached drawing of description of the invention expression content and figure in label be briefly described:
Fig. 1 is a kind of Passive serial composite power source brake energy recovering system structure chart of the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
As shown in Figure 1, a kind of Passive serial composite power source brake energy recovering system, including electric machine controller K, motor M,
Battery B, switch J, rectifier bridge, diode D4, super capacitor C and controller, rectifier bridge include thyristor T1~T3, diode
D1~D3, thyristor T1 and diode D1, thyristor T2 are in parallel after connecting with diode D2, thyristor T3 with diode D3.It is super
The composite power source that grade capacitor C and battery B is composed in series is connect with electric machine controller K input terminal, and electric machine controller K output end connects
Motor M is met, motor M three-phase is connected with rectifier bridge input terminal；It is negative that cathode rectifier (rectification bridge output end 1) connects diode D4
Pole, super capacitor C anode and the end switch J2, rectifier bridge cathode (rectification bridge output end 2) connect diode D4 anode, super capacitor
C cathode and the end switch J1；Diode D4 anode connect rectifier bridge cathode, super capacitor C cathode, electric machine controller K input terminal and
The end switch J2, diode D4 cathode connect cathode rectifier, super capacitor C anode and the end switch J1；Controller and rectifier bridge are opened
It closes J to be connected, after super capacitor C-terminal voltage is measured by voltage sensor, is transferred to controller；Rectifier bridge is formed with super capacitor C
Circuit in stalling current obtained by current sensor after, be transferred to controller.
Illustrate four of a kind of Passive serial composite power source brake energy recovering system below with reference to main circuit current flow direction
Operating mode, wherein main circuit includes recovery circuit and driving circuit, and wherein recovery circuit is by rectifier bridge and super capacitor C-shaped
At circuit, driving circuit is the circuit formed by battery B, switch J, super capacitor C, electric machine controller K.
Mode one: without regenerative braking deceleration mode
It is no braking mode there are two types of situation, the first is when the non-brake pedal of driver and accelerator pedal
When, rectifier bridge does not work, and automobile is in and slides or dead ship condition；Second is when driver's brake pedal, but motor M production
When raw back-emf is lower than super capacitor C-terminal voltage, motor M can not charge for super capacitor C, and system not can be carried out regeneration system
Dynamic, automobile is braked by mechanical friction；Recovery circuit no current under this mode, automobile kinetic energy can not be recovered to super capacitor C
In.
Mode two: regular regeneration braking mode
When driver's brake pedal and motor M back-emf is higher than super capacitor C-terminal voltage, and rectifier bridge works at this time,
Electric machine controller K does not work, and diode D4 reversely ends, and only super capacitor C participates in regenerative braking, and battery B does not recover energy；
A certain moment system power flow direction are as follows: electric current from a certain phase of machine winding by thyristor T1, super capacitor C, diode D3 to
Another phase of machine winding；In different moments electric current by different two power tubes of the upper and lower bridge arm of rectifier bridge, but generally by
Motor M charges by rectifier bridge to super capacitor C.
Mode three: battery-super capacitor series drive mode
When driver's bend the throttle, and when having dump energy in super capacitor C, rectifier bridge does not work at this time, switch J
It is placed in the end J1, diode D4 reversely ends, and super capacitor C and battery B are composed in series composite power source as motor M energy supply；Electricity
Stream flow direction are as follows: electric current flows to super capacitor C cathode, anode, electric machine controller K from battery B anode, then flows to battery B and bear
Pole forming circuit, while driving motor M.
Mode four: mode is operated alone in battery
When being in drive mode, and super capacitor C energy consumption is complete, and system is operated alone by battery B, under the mode
There are two types of modes for current direction, and state is operated alone for the battery of non-long duration in the first, when battery-super capacitor string
Super capacitor energy consumption is complete during connection driving, and battery B has a small amount of reversely charging to super capacitor C, and diode D4 is connected at this time,
Diode D4 short circuit super capacitor C avoids excessive reversely charging, and electric current flows through the end switch J1, diode D4, motor by battery B anode
Controller K flows to battery B cathode forming circuit；Diode D4 short circuit super capacitor C, but overlong time can be lost it is more
Energy；Current direction when being operated alone for long-time battery for second, switch J is in the end J2, diode D4 and super electricity
Hold C to be short-circuited, electric current flows through the end switch J2 flow direction motor controller K by battery B anode, flows to battery B cathode and is formed back
Road.During driving, controller judges whether super-capacitor voltage is greater than 1V, and if more than 1V, control switch is placed in the end J1, otherwise
Control switch is placed in the end J2, switchs the switching that the end J1 and the end J2 are realized in no current.In order to control braking moment, it is necessary to
Charging current is controlled, because the three phase back-emf frequencies that motor generates are usually higher, exports carrier frequency all the way using controller
The relatively low pwm signal control thyristor T1~T3's of rate is turned on and off, and realizes and operates to the switch of rectified output current, from
And generate the DC chopped-wave effect to supercapacitor charging current.System is realized with rectifier bridge and is cut to the direct current of stalling current
Wave effect reaches the control to electric braking deceleration.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (5)
1. a kind of Passive serial composite power source brake energy recovering system, which is characterized in that including rectifier bridge, diode D4, surpass
Grade capacitor C, switch and controller, the rectifier bridge and super capacitor C form recycling circuit, and diode D4 and super capacitor C are simultaneously
Connection, battery B connect to form composite power source by the end switch J1 with super capacitor C, and battery B is individually supplied by the end switch J2
Can, the on-off of thyristor in the switching of controller control switch and rectifier bridge.
2. Passive serial composite power source brake energy recovering system according to claim 1, which is characterized in that the recycling system
System further includes electric machine controller K and motor M, and the input terminal of electric machine controller K is connected with composite power source, and electric machine controller K's is defeated
Outlet is connected with motor M.
3. Passive serial composite power source brake energy recovering system according to claim 1, which is characterized in that described super
After capacitor C-terminal voltage is measured by voltage sensor, it is transferred to controller, the switching of control switch.
4. Passive serial composite power source brake energy recovering system according to claim 3, which is characterized in that the control
The switching of device control switch is realized in no current.
5. Passive serial composite power source brake energy recovering system according to claim 1, which is characterized in that the recycling
After stalling current in circuit is obtained by current sensor, it is transferred to controller, output pwm signal controls the on-off of thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373960.5A CN110239354A (en) | 2019-05-07 | 2019-05-07 | A kind of Passive serial composite power source brake energy recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373960.5A CN110239354A (en) | 2019-05-07 | 2019-05-07 | A kind of Passive serial composite power source brake energy recovering system |
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| CN110239354A true CN110239354A (en) | 2019-09-17 |
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| CN201910373960.5A Pending CN110239354A (en) | 2019-05-07 | 2019-05-07 | A kind of Passive serial composite power source brake energy recovering system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110834543A (en) * | 2019-10-28 | 2020-02-25 | 江苏大学 | Coupling system for eddy current braking and regenerative braking of electric vehicle and control method |
| CN112757905A (en) * | 2019-10-21 | 2021-05-07 | 瀚德万安(上海)电控制动系统有限公司 | Electronic mechanical brake system |
| CN113212167A (en) * | 2020-01-21 | 2021-08-06 | 上海汽车集团股份有限公司 | Relay closing auxiliary system and method |
| CN115071450A (en) * | 2022-08-03 | 2022-09-20 | 盐城工学院 | Closed-loop control parallel composite power supply braking energy recovery control system and working method thereof |
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Cited By (6)
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| CN115071450A (en) * | 2022-08-03 | 2022-09-20 | 盐城工学院 | Closed-loop control parallel composite power supply braking energy recovery control system and working method thereof |
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Application publication date: 20190917 |