CN105984347A - Start and stop control system for cars with regenerative braking - Google Patents
Start and stop control system for cars with regenerative braking Download PDFInfo
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- CN105984347A CN105984347A CN201510055450.5A CN201510055450A CN105984347A CN 105984347 A CN105984347 A CN 105984347A CN 201510055450 A CN201510055450 A CN 201510055450A CN 105984347 A CN105984347 A CN 105984347A
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- energy storage
- storage device
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- 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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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a start and stop control system for cars with regenerative braking. The start and stop control system comprises a start unit, a first storage battery connected with the start unit, a DCDC converter, and a control unit controlling the DCDC converter state, and also comprises an energy storage device and a control module. The energy storage device comprises a capacitor or a second storage battery. When the start and stop control system brakes in a regenerative manner, the control module controls the energy storage device to be connected with the DCDC converter, and braking energy is stored in the capacitor through the DCDC converter. When the start and stop control system stays in the start state, the control module controls the energy storage device to be connected with the start unit, and the energy storage device supplies power to the start unit. Through the technical scheme, complicated start and stop systems of the prior art can be simplified, charging and discharging times of the storage battery can be reduced, and service life of the start and stop control system can be prolonged.
Description
Technical field
The present invention relates to field of vehicle control, particularly relate to the start and stop control of a kind of vehicle for having regenerative braking
System processed.
Background technology
Vehicle energy optimization and saving have become the most important research and development direction, to this, it is proposed that a set of
The concept of regeneration brake system.Regenerative braking is when braking automobile, is converted into by brake energy by electromotor
Electrical power storage is in energy storage device.But owing in regenerative braking, start stop system needs to utilize accumulator frequently to open
Dynamic electromotor, can cause the Voltage Drop of car load electric power network.Voltage Drop can cause finished vehicle electronic equipment to work
Instability or restart.Common solution is to introduce extra energy storage device on car load or add new
Equipment: manostat.But the membership that adds of manostat causes start stop system structure complicated, adds additional cost.
And even in existing start stop system, refering to Fig. 1, in regenerative braking and shutdown process, plumbic acid stores
Passive frequently the charging and discharging of battery.Too much discharge and recharge, reduces the efficiency of Energy harvesting, simultaneously
Also reduce the life-span of lead-acid accumulator.
Accordingly, it would be desirable to a kind of novel start-stop control system, the system structure of existing complexity not only can be simplified, with
Time can reduce the discharge and recharge number of times of accumulator, extend the life-span of itself.
Summary of the invention
In order to overcome above-mentioned technological deficiency, it is an object of the invention to provide a kind of car for having regenerative braking
Start-stop control system, it is possible to avoid the Voltage Drop on car load network, thus eliminate making of manostat
With.
The invention discloses the start-stop control system of a kind of vehicle for having regenerative braking, single including starting
The first accumulator, the dcdc converter that are connected with described start unit of unit and control described DCDC and convert
The control unit of device state, also includes an energy storage device and control module；Described energy storage device comprises electric capacity or
Two accumulator；When described start-stop control system is in regenerative braking, described control module controls described energy storage and sets
For being connected with described dcdc converter, braking energy is stored to described energy storage device by dcdc converter
In；When described start-stop control system is in starting state, described control module controls described energy storage device and institute
Stating starting unit to connect, described energy storage device supplies power to described start unit.
Preferably, described control module includes the first switch N1 and second switch N2；Described first switch N1
It is connected between described start unit and described first accumulator；One end of described second switch N2 and described startup
Unit connects, and the other end is connected with described dcdc converter and described energy storage device.
Preferably, described dcdc converter is bidirectional DC/DC converter, can set connected energy storage
Standby discharge and recharge.
Preferably, described start-stop control system also includes that an energy storage device management being connected with described energy storage device is single
Unit and the first battery management unit being connected with described first accumulator；Described energy storage device administrative unit monitors
The capacity of described energy storage device, temperature, and by the energy storage device information transmission of monitoring gained to described control unit；
Described first battery management unit monitors the capacity of described first accumulator and flows through described first accumulator
Electric current, and by the first battery information transmission of monitoring gained to described control unit.
Preferably, described control unit controls the size of described start unit exciting current, regulates described startup single
The generated energy of unit and output voltage.
Preferably, described start unit is startup/power generation all-in-one machine or the starter motor of separation and electromotor.
The invention also discloses another kind of for having the start-stop control system of the vehicle of regenerative braking, including starting
The first accumulator, dcdc converter that unit is connected with described start unit and control described DCDC and become
The control unit of parallel operation state, also includes an energy storage device and the energy storage device management being connected with described energy storage device
Unit and the first battery management unit being connected with described first accumulator；Described energy storage device administrative unit is supervised
Control the capacity of described energy storage device, temperature, and the energy storage device information transmission of monitoring gained is controlled list to described
Unit；Described first battery management unit monitors the capacity of described first accumulator and flows through described first accumulator
Electric current, and will the first battery information transmission of monitoring gained to described control unit.
Preferably, when described vehicle travels, the electricity that described control unit provides according to the first battery management unit
Stream information controls the output voltage of described start unit, to reduce the discharge and recharge of described first accumulator.
Preferably, during the braking of described vehicle regenerative, only when described dcdc converter reaches peak power,
Described control unit improves the output voltage of described start unit, to allow start unit simultaneously to described first electric power storage
Charge in pond.
Preferably, when described start-stop control system is under non-started state, described control unit controls described
Dcdc converter, to car load network delivery energy, reduces the discharge and recharge to described first accumulator.
After have employed technique scheme, compared with prior art, have the advantages that
1. the situation that car load network voltage falls no longer occurs, start stop system is no longer necessary to manostat and stablizes electricity
Pressure；
2. reduce the Full Vehicle System discharge and recharge to accumulator, improve energy utilization efficiency, extend the life-span of battery,
Meanwhile, allow accumulator participate in the energy produced during reclaiming braking, improve organic efficiency.
Accompanying drawing explanation
Fig. 1 is the system schematic of regeneration brake system in prior art；
Fig. 2 is the system architecture schematic diagram of the start-stop control system meeting one embodiment of the present invention；
Fig. 3 is energy conversion under the start-stop control system regenerative braking state meeting one embodiment of the present invention
Schematic diagram；
Fig. 4 is energy conversion signal under the start-stop control system starting state meeting one embodiment of the present invention
Figure；
Fig. 5 is the system architecture schematic diagram of the start-stop control system meeting another preferred embodiment of the present invention.
Detailed description of the invention
Advantages of the present invention is expanded on further below in conjunction with accompanying drawing and specific embodiment.
Refering to Fig. 2, in the preferred embodiment, start-stop control system is applied to have in the vehicle of regenerative braking,
It includes: send, to electromotor, the first electric power storage that the start unit of electric energy is directly connected to start unit two ends
Pond, the dcdc converter being connected between start unit and the first accumulator, and with dcdc converter even
Connect, and control the control unit of its state.Wherein, dcdc converter is connected with car load network, and in regeneration
Before and after braking, the energy of car load network is shifted.In order to avoid start unit on startup on car load network electric power
Voltage Drop, in addition to the first accumulator, start-stop control system also includes an energy storage device, and control module,
Energy storage device includes electric capacity or another accumulator, the i.e. second accumulator, or may also comprise lithium battery, utilizes
Electric capacity and accumulator or the characteristic of lithium battery, time under start-stop control system is in regenerative braking, control module is cut
Change and control energy storage device and be connected with dcdc converter, thus when braking, braking energy is first single by starting
Unit is transported in car load network, and therewith, the energy of car load network is delivered to dcdc converter, and passes through DCDC
The energy of braking is stored in the electric capacity of energy storage device by changer.And when start-stop control system is in starting state
Time, control module controls and switches energy storage device and is directly connected to start unit, by energy storage device to start unit
Power supply-.Due to the self-discharge characteristics of energy storage device, when cold start-up, system is still by the first electric power storage
Pond provides and starts energy.
Be provided with energy storage device as the second stored energy mechanism after, decrease the discharge and recharge number of times of the first accumulator,
The life-span of the first accumulator itself extends the most accordingly.Meanwhile, discharge and recharge each time all ensure that by energy storage device
Interior execution, when in the face of the biggest starting current, energy storage device can slow down the impact to car load network of the big electric current,
The most just serve avoid car load electric power network fall problem.
In one embodiment, control module includes the first switch N1 and second switch N2, wherein the first switch N1
It is connected between start unit and the first accumulator, and is connected between start unit and dcdc converter；And the
One end of two switch N2 is connected with start unit, and the other end is simultaneously connected with dcdc converter and energy storage device.
After there is above-mentioned connected mode, refering to Fig. 3 and Fig. 4, when start stop system is under regenerative braking state, control
System switch N1 Guan Bi, and maintained switch N2 open mode, now, start unit is by the switch N1 of Guan Bi
It is connected with dcdc converter, thus the braking energy that start unit produces transmits to dcdc converter,
And further, transmitted to energy storage device by dcdc converter.Under start stop system is in starting state
Time, control switch N2 Guan Bi, and maintained switch N1 is in open mode, now, start unit and energy storage
Equipment connects, and energy storage device is by the electric energy release of storage to start unit.
When the energy of energy storage device storage is more, can be compensated by dcdc converter and be back to car load network,
I.e. dcdc converter is bidirectional DC/DC converter, and during energy storage device electric discharge, the electric energy of releasing will be by double
Transmit to car load network to dcdc converter.It can also be appreciated that when the energy of energy storage device storage
When being not enough to start vehicle, dcdc converter by the car load network electricity that lacks of transmission to energy storage device,
To guarantee that the electricity sent according to energy storage device can clean boot vehicle.
Similarly, the process of above-mentioned compensation also can be completed by the accumulator being connected with start unit, such as due to
The reasons such as self-discharge characteristic, when starting start unit for the first time, energy storage device does not have enough energy,
Now, starting in order to ensure normal, start stop system controls switch N1 Guan Bi and switch N2 opens so that store
The energy of battery transmits to energy storage device.
Refering to Fig. 5, in another optional embodiment of the present invention, start-stop control system includes startup equally
The first accumulator, dcdc converter and the control dcdc converter state that unit is connected with start unit
Control unit, include energy storage device too, but in this embodiment, also include and be connected with energy storage device
Energy storage device administrative unit and the first battery management unit of being connected with the first accumulator；Energy storage device manages
Unit communicates to connect with control unit, and monitors the capacity of energy storage device, temperature, subsequently by the storage of monitoring gained
Can facility information transmission extremely described control unit；First battery management unit also communicates to connect with control unit,
It monitors the capacity of the first accumulator and flows through the electric current of the first accumulator, and by the first accumulator of monitoring gained
Information is transmitted to control unit.Control unit above-mentioned is related to the letter such as the capacity of energy storage device, temperature receiving
After the information such as breath and the capacity of the first accumulator, temperature, electric current, it can control dcdc converter and startup
The duty of unit is as from what unit transmitted or accepting electric energy.
As when normal vehicle operation, start unit generating loads for car load, and the first accumulator is as load
On car load network, the first control system for accumulators will send battery capacity information and the electric current letter of the first accumulator
Breath is to control unit, and control unit, after receiving information, controls the output voltage of start unit, thus reduces
Number of times to the discharge and recharge of the first accumulator.
The most such as in process of regenerative braking, control unit improves the exciting current of start unit, allows start unit
Braking energy is converted into electric energy, and is input on car load electric network.Control unit controls DCDC simultaneously and becomes
Parallel operation is by the electrical power storage on car load electrical network to energy storage device.If desired the braking energy stored a lot of and
When dcdc converter has been maxed out power (this information is provided by energy storage device management system), control single
Unit can control start unit and improve the output voltage of himself, thus changes by same to the first accumulator and energy storage device
Time storage energy.
In another embodiment, after regenerative braking, energy storage device needs in normal driving process or start and stop system
The energy of storage is discharged during uniting from halted state to starting state.Control unit controls DCDC conversion
Device to car load network delivery energy, reduces the electricity that start unit sends with certain power simultaneously.In whole mistake
Cheng Zhong, control unit monitors the electric current of the first accumulator by the first battery management unit, reduces and stores first
The discharge and recharge of battery.In the process, if the first accumulator capacity is too low, the first accumulator can be carried out
Charging.
It can also be appreciated that any of the above-described, there is energy storage device administrative unit and the first battery management unit
Embodiment all can apply to the start-stop control system with control module to the first accumulator and energy storage
Management and the control of equipment are more comprehensive.Specifically, control unit controls the size of start unit exciting current,
Just the generated energy of scalable start unit and output voltage, thus control the charge and discharge of the first accumulator and energy storage device
The situation of electricity.
In any of the above-described embodiment, start unit is startup/power generation all-in-one machine or the starter motor of separation and generating
Machine, is converted into mechanical energy by the electric energy of the first accumulator, drives engine flywheel to rotate the startup realizing electromotor.
It should be noted that, embodiments of the invention have preferably implementation, and not the present invention is made any shape
The restriction of formula, any one skilled in the art changes possibly also with the technology contents of the disclosure above or modifies
For effective embodiment of equivalent, as long as without departing from the content of technical solution of the present invention, the technology according to the present invention is real
Any amendment that confrontation above example is made or equivalent variations and modification, all still fall within technical solution of the present invention
In the range of.
Claims (10)
1. for having a start-stop control system for the vehicle of regenerative braking, including start unit and described startup
The first accumulator, dcdc converter that unit connects and control the control list of described dcdc converter state
Unit, it is characterised in that
Also include an energy storage device and control module；
Described energy storage device comprises electric capacity or the second accumulator；
When described start-stop control system is in regenerative braking, described control module controls described energy storage device with described
Dcdc converter connects, and braking energy is stored to described energy storage device by dcdc converter；
When described start-stop control system is in starting state, described control module controls described energy storage device and opens with described
Moving cell connects, and described energy storage device supplies power to described start unit.
2. start-stop control system as claimed in claim 1, it is characterised in that
Described control module includes the first switch N1 and second switch N2；
Described first switch N1 is connected between described start unit and described first accumulator；
One end of described second switch N2 is connected with described start unit, the other end and described dcdc converter and institute
State energy storage device to connect.
3. start-stop control system as claimed in claim 1, it is characterised in that
Described dcdc converter is bidirectional DC/DC converter, can be to connected energy storage device discharge and recharge.
4. start-stop control system as claimed in claim 1, it is characterised in that
Described start-stop control system also includes an energy storage device administrative unit being connected with described energy storage device and with described
The first battery management unit that first accumulator connects；
Described energy storage device administrative unit the monitoring capacity of described energy storage device, temperature, and the energy storage of monitoring gained is set
Standby information transmission is to described control unit；
Described first battery management unit monitors the capacity of described first accumulator and flows through described first accumulator
Electric current, and by the first battery information transmission of monitoring gained to described control unit.
5. start-stop control system as claimed in claim 4, it is characterised in that
Described control unit control described start unit exciting current size, regulate described start unit generated energy and
Output voltage.
6. the start-stop control system as described in claim 1-5, it is characterised in that
Described start unit is startup/power generation all-in-one machine or the starter motor of separation and electromotor.
7. for having a start-stop control system for the vehicle of regenerative braking, including start unit and described startup
The first accumulator, dcdc converter that unit connects and control the control list of described dcdc converter state
Unit, it is characterised in that
Also include an energy storage device and the energy storage device administrative unit being connected with described energy storage device and store with described first
The first battery management unit that battery connects；
Described energy storage device administrative unit the monitoring capacity of described energy storage device, temperature, and the energy storage of monitoring gained is set
Standby information transmission is to described control unit；
Described first battery management unit monitors the capacity of described first accumulator and flows through described first accumulator
Electric current, and by the first battery information transmission of monitoring gained to described control unit.
8. start-stop control system as claimed in claim 7, it is characterised in that
When described vehicle travels, the current information that described control unit provides according to the first battery management unit controls institute
State the output voltage of start unit, to reduce the discharge and recharge of described first accumulator.
9. start-stop control system as claimed in claim 7, it is characterised in that
During the braking of described vehicle regenerative, only when described dcdc converter reaches peak power, described control unit
Improve the output voltage of described start unit, to allow start unit simultaneously to described first accumulator charging.
10. start-stop control system as claimed in claim 7, it is characterised in that
When described start-stop control system is under non-started state, described control unit controls described DCDC conversion
Device, to car load network delivery energy, reduces the discharge and recharge to described first accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055450.5A CN105984347A (en) | 2015-02-03 | 2015-02-03 | Start and stop control system for cars with regenerative braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055450.5A CN105984347A (en) | 2015-02-03 | 2015-02-03 | Start and stop control system for cars with regenerative braking |
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| Publication Number | Publication Date |
|---|---|
| CN105984347A true CN105984347A (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510055450.5A Pending CN105984347A (en) | 2015-02-03 | 2015-02-03 | Start and stop control system for cars with regenerative braking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808513A (en) * | 2017-11-22 | 2019-05-28 | 丰田自动车株式会社 | vehicle control device |
| WO2019172789A1 (en) | 2018-02-14 | 2019-09-12 | Vers Produkcja Sp. Z O.O. Sp. K. | A method of charging and discharging capacitors in a vehicle with a combustion engine and system thereof |
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| US20060137918A1 (en) * | 2003-02-07 | 2006-06-29 | Daimlerchrysler Ag | Power supply circuit for a motor vehicle electric system |
| CN101428610A (en) * | 2008-12-04 | 2009-05-13 | 奇瑞汽车股份有限公司 | Hybrid power automobile power assembly control method |
| KR20120084851A (en) * | 2011-01-21 | 2012-07-31 | 현대로템 주식회사 | Energy recovering and providing apparatus installed on car and electric car comprising the same |
| CN103538482A (en) * | 2013-10-07 | 2014-01-29 | 北京工业大学 | Automobile start-stop system capable of providing assisting power and recycling braking energy |
| CN203974575U (en) * | 2014-07-09 | 2014-12-03 | 江苏超力电器有限公司 | The auto idle speed start stop system that a kind of band brake energy reclaims |
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2015
- 2015-02-03 CN CN201510055450.5A patent/CN105984347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060137918A1 (en) * | 2003-02-07 | 2006-06-29 | Daimlerchrysler Ag | Power supply circuit for a motor vehicle electric system |
| CN101428610A (en) * | 2008-12-04 | 2009-05-13 | 奇瑞汽车股份有限公司 | Hybrid power automobile power assembly control method |
| KR20120084851A (en) * | 2011-01-21 | 2012-07-31 | 현대로템 주식회사 | Energy recovering and providing apparatus installed on car and electric car comprising the same |
| CN103538482A (en) * | 2013-10-07 | 2014-01-29 | 北京工业大学 | Automobile start-stop system capable of providing assisting power and recycling braking energy |
| CN203974575U (en) * | 2014-07-09 | 2014-12-03 | 江苏超力电器有限公司 | The auto idle speed start stop system that a kind of band brake energy reclaims |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808513A (en) * | 2017-11-22 | 2019-05-28 | 丰田自动车株式会社 | vehicle control device |
| WO2019172789A1 (en) | 2018-02-14 | 2019-09-12 | Vers Produkcja Sp. Z O.O. Sp. K. | A method of charging and discharging capacitors in a vehicle with a combustion engine and system thereof |
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