CN103888032A - Mechanical in-parallel modularized combined type electric driving system with batteries serving as energy sources - Google Patents
Mechanical in-parallel modularized combined type electric driving system with batteries serving as energy sources Download PDFInfo
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- CN103888032A CN103888032A CN201410070994.4A CN201410070994A CN103888032A CN 103888032 A CN103888032 A CN 103888032A CN 201410070994 A CN201410070994 A CN 201410070994A CN 103888032 A CN103888032 A CN 103888032A
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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
- Y02T10/64—Electric machine technologies in electromobility
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a mechanical in-parallel modularized combined type electric driving system with batteries serving as energy sources. The mechanical in-parallel modularized combined type electric driving system comprises one or more electric driving units and one or more controllers. The electric driving units are connected with the controllers through buses, and output ends of the electric driving units are in rigid connection through mechanical structures. Each of the electric driving units comprises a battery, a battery detection circuit, a power regulator, an external power supply, an electromotor and a power transmission mechanism, wherein the battery detection circuit detects work statuses of the battery and transmits a detection signal to the power regulator connected with the battery, the external power supply and the electromotor, and the electromotor performs power output through the power transmission mechanism. According to the mechanical in-parallel modularized combined type electric driving system, energy of the batteries can be supplemented easily, requirements on design of a battery management system are lowered down, each of the electric driving units does not need too many batteries, complexity of the battery management system is greatly reduced, and reliability and stability of the system can be improved. Therefore, the mechanical in-parallel modularized combined type electric driving system is flexible to use and convenient to maintain.
Description
Technical field
The present invention relates to a kind of power drive system, particularly a kind of mechanical parallel modular combined electrical drive system taking battery as the energy.
Background technology
Rising steadily and due to a large amount of its problem of environmental pollutions that cause that use, making people have to think deeply its alternative solution along with traditional petroleum-based energy price.Electric drive system taking battery as power supply is because its economy is good, and the characteristics such as environmental friendliness have obtained people's extensive concern.In these years also obtained some and applied widely, especially in the scope of low speed small power, (as electric bicycle) obtains a wide range of applications.But due to some technical problems, the electric drive system application in relatively high power occasion taking battery as power supply just seems more limited.
Its main cause is to have following technical problem: less power means the requirement that just can reach use with less electric current and voltage, can meet the power needs of its hundreds of W as electric bicycle adopts the battery of the voltage level of 36V left and right.Needed maximum current is tens of A only.Relatively good solution.
Be similar to car and the such oversize vehicle of bus if drive.Need the power output of KW up to a hundred.If also adopt 36V voltage, needed electric current is by large unacceptable.So at present the motor vehicle of all relatively high power output all adopts higher operating voltage, so as Current Control in acceptable degree.But a large amount of batteries series connection will bring an other very important problem, be exactly series battery bulk life time lower than the problem in battery cell life-span, cost is too high.
Generally battery producer often can give an index, as 1500 left and right of ferric phosphate lithium cell cell cycle life.Discharge and recharge completely even if this is equivalent to complete once every day, battery can both use 3-5, considers the mileage of running car.Battery life approaches the life-span of automobile itself substantially, but actual conditions often fall far short.Even if battery core monomer cycle life is accomplished more than thousand times, but as long as battery one in groups, half or lower when testing result cycle life can fall sharply into monomer mostly, this comes true, be difficult to meet new-energy automobile instructions for use, only have group technology to break through, could the real problem that solves electric vehicle industrialization development.
Fail safe is primary forever, and in order to reach larger power output, the direct voltage that battery pack itself is higher is also to have certain danger.If moreover battery be used on vehicle, completely likely bump, the accident such as water inlet.How solving thoroughly the potential risk that high voltage brings, is also a problem demanding prompt solution.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of energy content of battery to be easy to supplement, reduce the requirement to battery management system design, the number of batteries that single electric drive unit needs is also few, the complexity of battery management system reduces greatly, can improve the reliability and stability of system, use flexibly the mechanical parallel modular combined electrical drive system taking battery as the energy easy to maintenance.
The object of the invention is to be achieved through the following technical solutions: a kind of mechanical parallel modular combined electrical drive system taking battery as the energy, it comprises at least one electric drive unit and a controller, electric drive unit is connected with controller by bus respectively, and the output of each electric drive unit is rigidly connected by mechanical structure;
Described electric drive unit comprises battery, battery detection circuit, electric governor, external power source, motor and power drive mechanism, and battery detection circuit detects the operating state of battery, and detection signal is transferred to electric governor; Electric governor is connected with battery, external power source and motor respectively, and motor carries out power output by power drive mechanism;
Described electric governor requires the output of battery to be transported to motor according to controlling, and realizes electric energy to mechanical transformation of energy; Electric governor is also reversed motor the power delivery that drags the electric energy that sends or external power source to battery, and battery is charged.
Connected mode between the output of described electric drive unit is: the rotor of all motor is connected in same rotating shaft, with identical rotary speed working.
Connected mode between the output of described electric drive unit is: chain connects.
Connected mode between the output of described electric drive unit is: synchronous belt connects.
Connected mode between the output of described electric drive unit is: gear connects.
Described electric drive unit is except output is rigidly connected by mechanical structure, and each electric drive unit is separate, does not carry out being connected of any mode with other elements in other any electric drive units.
The invention has the beneficial effects as follows:
1, battery can adopt external power source directly to charge and rotated and then charged to battery by the electric governor being connected with motor by the direct driving electric machine of external impetus, the energy content of battery is easy to supplement, reduce the requirement to battery management system design, the number of batteries that single electric drive unit needs is also few, the minimizing of the quantity of battery reduces the complexity of battery management system greatly, can improve the reliability and stability of system;
2, use flexibly, skillfully can the splicing arbitrarily as required of electric drive unit, to reach the requirements such as required energy, power, moment of torsion, if having, damages or battery failure certain electric drive unit, only need to change this impairment unit, do not affect the use of whole system, easy to maintenance;
3, transmission efficiency is high, and power transformation gas is connected to rigid mechanical and connects, the adjacent motor of battery, and transmission range is ultrashort, can adopt the battery that voltage is lower, compares conventional high-tension battery, and fail safe improves greatly, can also save the materials such as electric wire, reduces costs.
Brief description of the drawings
Fig. 1 is system configuration schematic diagram of the present invention;
Fig. 2 is that the rotor of motor of the present invention is connected to the connection diagram on same output shaft;
Fig. 3 is that the rotor of motor of the present invention is connected to the side schematic view on same output shaft;
Fig. 4 is the schematic diagram that motor of the present invention connects by gear.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing, but the content that the present invention protects is not limited to the following stated.
As shown in Figure 1, a kind of mechanical parallel modular combined electrical drive system taking battery as the energy, it comprises at least one electric drive unit and a controller, and electric drive unit is connected with controller by bus respectively, and the output of each electric drive unit is rigidly connected by mechanical structure;
Described electric drive unit comprises battery, battery detection circuit, electric governor, external power source, motor and power drive mechanism, and battery detection circuit detects the operating state of battery, and detection signal is transferred to electric governor; Electric governor is connected with battery, external power source and motor respectively, and motor carries out power output by power drive mechanism;
Described electric governor requires the output of battery to be transported to motor according to controlling, and realizes electric energy to mechanical transformation of energy; Electric governor is also reversed motor the power delivery that drags the electric energy that sends or external power source to battery, and battery is charged.
Connected mode between the output of described electric drive unit is: the rotor of all motor is connected in same rotating shaft, with identical rotary speed working, as shown in Figures 2 and 3.
Connected mode between the output of described electric drive unit is: chain connects.
Connected mode between the output of described electric drive unit is: synchronous belt connects.
Connected mode between the output of described electric drive unit is: gear connects, as shown in Figure 4.
Described electric drive unit is except output is rigidly connected by mechanical structure, and each electric drive unit is separate, does not carry out being connected of any mode with other elements in other any electric drive units.
Reliability of the present invention is high, has thoroughly solved the group effect problem of battery.With regard to whole system, battery management system is directly embedded among single electric drive unit, single electric drive unit has perfect battery management function, and the inefficacy of part battery does not affect whole system and uses, and has greatly reduced the requirement to battery management system design.And the battery of single electric drive unit series connection quantity few, the quantity of battery is also less, and the complexity of battery management system reduces greatly, and reliability improves.
Battery can adopt external power source directly to charge and rotated and then charged to battery by the electric governor being connected with motor by the direct driving electric machine of external impetus, and the energy content of battery is easy to supplement.Owing to can using easily regenerative braking mode to charge, power drive system of the present invention can be for fields such as the recovery of hybrid vehicle energy and the recovery of heavy-duty vehicle descending energy.
Use flexibly, can flexible configuration connect the quantity of electric drive unit, to reach the requirements such as required volume, energy, power, moment of torsion, configuration needs easily.Be particluarly suitable for some vehicles and substantially complete, need to configure dynamical system, or need the fields such as flexible design vehicle structure.Due to modularization completely of the structure of electric drive unit, can not needing customization just can directly assemble out satisfactory combination is completely power drive system, has improved greatly the development rate of product, has reduced R&D costs.And easy to maintenance, damage if any electric drive unit, only need to change.
The present invention can the inhomogeneous torque pulsation of active balance in the occasion having, when especially adopting switched reluctance motor drive system.Switched reluctance motor drive system combines the advantage of Induction motor drives and direct current drive electric motor of automobile drive system, be the strong competitor of these drive systems, but Switch reluctance motor driving system SRD system still has torque pulsation.From operation principle, the torque producing on switched reluctance motor rotor is formed by stacking by some row pulse torques, due to the impact of double-salient-pole structure and magnetic circuit saturation nonlinearity, synthetic torque is not a constant torque, and having certain harmonic component, this has affected SR motor low cruise performance.The noise of SR motor transmission agent is larger than general motor with vibrations.Above-mentioned shortcoming is by carrying out well-designed to motor, take appropriate measures, and consider to adopt reasonable strategy to be improved from control angle, but be difficult to eliminate completely, by a large amount of multiple motors together parallel connection can effectively reduce electromagnetism pulsating torque, make torque more level and smooth.
Under the basis connecting at multiple electrical machineries, if adopt switched reluctance machines, monophase machine can be made in each unit, when connection, each motor certain phase angle of staggering, owing to having adopted single-phase project organization, the drive part of motor can be accomplished the simplest, and reliability improves.
Transmission efficiency of the present invention is high, will be electrically connected as rigid mechanical connects, and the adjacent motor of battery in each electric drive unit, transmission range is shorter, can adopt the battery that voltage is lower, as 36V or lower.Compare conventional high-tension battery, fail safe improves greatly, and still can satisfy the demand, and can also save the materials such as electric wire, obtains higher transmission efficiency.
Claims (6)
1. the mechanical parallel modular combined electrical driver element taking battery as the energy, it is characterized in that: it comprises at least one electric drive unit and a controller, electric drive unit is connected with controller by bus respectively, and the output of each electric drive unit is rigidly connected by mechanical structure;
Described electric drive unit comprises battery, battery detection circuit, electric governor, external power source, motor and power drive mechanism, and battery detection circuit detects the operating state of battery, and detection signal is transferred to electric governor; Electric governor is connected with battery, external power source and motor respectively, and motor carries out power output by power drive mechanism;
Described electric governor requires the output of battery to be transported to motor according to controlling, and realizes electric energy to mechanical transformation of energy; Electric governor is also reversed motor the power delivery that drags the electric energy that sends or external power source to battery, and battery is charged.
2. a kind of mechanical parallel modular combined electrical driver element taking battery as the energy according to claim 1, it is characterized in that: the connected mode between the output of described electric drive unit is: the rotor of all motor is connected in same rotating shaft, with identical rotary speed working.
3. a kind of mechanical parallel modular combined electrical driver element taking battery as the energy according to claim 1, is characterized in that: the connected mode between the output of described electric drive unit is: chain connects.
4. a kind of mechanical parallel modular combined electrical driver element taking battery as the energy according to claim 1, is characterized in that: the connected mode between the output of described electric drive unit is: synchronous belt connects.
5. a kind of mechanical parallel modular combined electrical driver element taking battery as the energy according to claim 1, is characterized in that: the connected mode between the output of described electric drive unit is: gear connects.
6. a kind of mechanical parallel modular combined electrical driver element taking battery as the energy according to claim 1, it is characterized in that: described electric drive unit is except output is rigidly connected by mechanical structure, each electric drive unit is separate, does not carry out being connected of any mode with other elements in other any electric drive units.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129314A (en) * | 2014-07-18 | 2014-11-05 | 成都宇能通能源开发有限公司 | Dynamical system adopting switch reluctance motor as power transformer |
| WO2016127484A1 (en) * | 2015-02-11 | 2016-08-18 | 成都宇能通能源开发有限公司 | Mechanical parallel modularization combined electric drive system adopting battery as energy |
| CN109617377A (en) * | 2018-12-03 | 2019-04-12 | 深圳市越疆科技有限公司 | Associating power supply formula actuator assembly, power supply adaptation method and servo control system |
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2014
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Patent Citations (6)
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| US20090018716A1 (en) * | 2007-07-12 | 2009-01-15 | Joseph Mario Ambrosio | Parallel hybrid drive system utilizing power take off connection as transfer for a secondary energy source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129314A (en) * | 2014-07-18 | 2014-11-05 | 成都宇能通能源开发有限公司 | Dynamical system adopting switch reluctance motor as power transformer |
| WO2016127484A1 (en) * | 2015-02-11 | 2016-08-18 | 成都宇能通能源开发有限公司 | Mechanical parallel modularization combined electric drive system adopting battery as energy |
| CN109617377A (en) * | 2018-12-03 | 2019-04-12 | 深圳市越疆科技有限公司 | Associating power supply formula actuator assembly, power supply adaptation method and servo control system |
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Application publication date: 20140625 |