CN103802663B - Hybrid power system and control method thereof - Google Patents

Hybrid power system and control method thereof Download PDF

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Publication number
CN103802663B
CN103802663B CN201410041212.4A CN201410041212A CN103802663B CN 103802663 B CN103802663 B CN 103802663B CN 201410041212 A CN201410041212 A CN 201410041212A CN 103802663 B CN103802663 B CN 103802663B
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China
Prior art keywords
motor
pattern
electromotor
gear
overrunning clutch
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CN103802663A (en
Inventor
刘延伟
赵克刚
黄向东
郭钟宁
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Guangdong University of Technology
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Guangdong University of Technology
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

The invention relates to a hybrid power system with multiple power sources and multiple levels of speed ratios and a control method of the hybrid power system. The hybrid power system comprises an engine, a bidirectional controllable overrun clutch, a first motor, a second motor, a multi-speed transmission and a battery pack. One end of the bidirectional controllable overrun clutch is connected with an output shaft of the engine. The other end of the bidirectional controllable overrun clutch is connected with an output shaft of the first motor. A driving part of the multi-speed transmission is connected with the bidirectional controllable overrun clutch. A driven part of the multi-speed transmission is connected with an output shaft of the second motor. The battery pack supplies power to the first motor and the second motor. By means of switching of the modes of the bidirectional controllable overrun clutch and switching of gears of the multi-speed transmission, the multiple driving and energy recovery modes which the multiple power sources can be partially or overall involved in is realized. According to the hybrid power system, control is simplified, the structure is compact, sliding friction energy loss caused by the clutch is avoided, the efficiency of a whole vehicle is improved, the gear ratio of the system lowers the requirement for the performance of the first motor, the fuel economy of the engine is improved, and the energy-saving effect is enhanced.

Description

A kind of hybrid power system and its control method
Technical field
The invention belongs to the hybrid power transmission technical field of electromechanical combined drive system, particularly motor vehicles, specifically It is related to the mixing that a class has two-way controllable overrunning clutch, the multiple power sources having including electromotor and many gear-stage velocity ratios Dynamical system and its control method.
Background technology
Hybrid power system refers to two and two or more power source, is realized individually or common by certain dynamic coupling device With the system driving vehicle.
The commonly used slip clutch of prior art (include dry type and wet type) or planetary gears as moving more The coupling device in power source.Slip clutch only has on-off function, is mainly used in, among parallel hybrid dynamic system, thering is control Difficulty processed is big, have high demands, shortcoming easy to wear, and the cunning that the frequent break-make of clutch produces is rubbed and also brought along energy loss.Planet tooth Wheel mechanism be applied to series parallel type hybrid dynamic system it is impossible to realize speed ratio variable it is difficult to electromotor is maintained at optimum Working.
Mono-directional overrun clutch is the basic part that a class is widely used in single direction of rotation transmission, has engagement type, ball The various ways such as formula, roller, Wedge-type, generally have the basic elements of character such as outer ring, inner ring, conjunction, are can be according to driving and driven Part (inside and outside circle) relative rotational or the change in direction, voluntarily realize the device combining (transmission) or separating (surmounting).
Existing hybrid power system has adopted the scheme of common freewheel clutch: cn101439665 to propose in band There is the scheme being provided with mono-directional overrun clutch between the electromotor of starter and motor, the program is not provided with variator, greatly Limit the scope of application of system it is difficult to meet the needs of general vehicle normally travel.cn101314325、cn101334076 Propose and overdrive clutch is set and the second power source (the second motor) between in the first power source (electromotor connects the first motor) The scheme of device, the problem of the program is, the first Motor drive or necessarily dragged electromotor although this is asked during generating by counter dragging Topic can be solved by setting up slip clutch between electromotor and the first motor, but set up clutch and increased system chi Very little and control difficulty, counteract the compact conformation being brought using freewheel clutch and operation simplify advantage, engineer applied model Enclose and be worth limited.
Content of the invention
It is an object of the invention to provide one kind is without slip clutch, compact conformation, efficiency high, production inheritance Good, and advantageously reduce the hybrid power system controlling difficulty Manufacturing cost.
Another object of the present invention is to providing a kind of control method controlling simply and easily hybrid power system.
The purpose of the present invention is realized by taking following technical proposals: the hybrid power system of the present invention, includes and starts Machine, two-way controllable overrunning clutch, the first motor, the second motor, multiple-speed gear-box, set of cells, two-way controllable overrunning clutch One end be connected with the output shaft of electromotor, the other end of two-way controllable overrunning clutch is connected with the output shaft of the first motor, The driving link of multiple-speed gear-box is connected with two-way controllable overrunning clutch, the output of the driven member of multiple-speed gear-box and the second motor Axle connects, battery-powered to the first motor and the second motor, by pattern and the multi-change speed of two-way controllable overrunning clutch The gear switching of device, realizes multiple drivings and energy recuperation mode that multi power source can partly or entirely participate in.
Described electromotor is connected with the inner ring of two-way controllable overrunning clutch, the outer ring of two-way controllable overrunning clutch with many The input shaft of level variator is connected;Or electromotor is connected with the outer ring of two-way controllable overrunning clutch, two-way controllable overrunning clutch The inner ring of device is connected with the input shaft of multiple-speed gear-box.
Described first motor is connected with the input shaft of multiple-speed gear-box by gear pair, the first motor pass through input shaft with double It is connected to controllable overrunning clutch outer ring, multiple-speed gear-box includes 1 gear and 2 gear lock units, 3 gear lock units, by controlling 1 gear And 2 gear lock units, 3 gear lock units are realizing the intervention of related gear or to exit;Second motor passes through gear pair and multi-change speed The output shaft of device is connected, and power is transferred to wheel by main reducing gear, differential mechanism by output shaft, drives vehicle.
Described two-way controllable overrunning clutch is to develop based on freewheel clutch principle to form, and partly or entirely has forward direction Transmission power or surmount, reverse power transmission or surmount, bidirectional overtaking separate, four kinds of mode of operations of bi-directional power;Described Two-way controllable overrunning clutch passes through to control the relative motion of the retainer, outer ring or inner ring of two-way controllable overrunning clutch at this Switching is realized between a little mode of operations.
The control method of hybrid power system of the present invention, according to the difference of hybrid power system state and vehicle behavior demand There is following drive pattern:
1) pure electric drive mode
When battery electric quantity is sufficient, hybrid power system is preferably in pure electric drive mode,
11) the first motor is operated alone
Under this pattern, two-way controllable overrunning clutch preferably controlled in the pattern that is kept completely separate, electromotor and the second motor are not Participate in work, variator controlled in 1,2,3 gear one of gear;
12) the second motor is operated alone
Under this pattern, variator controlled in neutral, electromotor and the first motor are not involved in work;
13) bi-motor parallel drive
Under this pattern, the first unit and the second motor drive vehicle jointly.Two-way controllable overrunning clutch preferably controlled in It is kept completely separate pattern, electromotor is not involved in work, the controlled a certain gear in 1,2,3 gears of variator;
2) engine drive mode
Under this pattern, two-way controllable overrunning clutch preferably controlled in the pattern that is completely combined, multiple-speed gear-box controlled in 1, 2nd, a certain gear in 3 gears;, without conventional starter, engine start is by two-way controllable overrunning clutch and for electromotor One motor cooperating is realized: two-way controllable overrunning clutch controlled in reverse enable, positive disability pattern, the first motor drives Engine start, because now power can only be negative in nothing after engine start via two-way controllable overrunning clutch back transfer It is rapidly achieved stable idling mode in the case of load;
3) electromotor and motor combination drive pattern
31) increase journey pattern
When battery electric quantity is not enough, hybrid power system is preferably in increasing journey pattern and realizes pure electric drive,
Under this pattern, electromotor is connected with the first motor, and the first motor charges for set of cells under the dragging of electromotor, electricity Pond group is powered for the second motor, the second motor-driven vehicle;
Now, two-way controllable overrunning clutch preferably controlled in being completely combined pattern, drag the first electricity to realize electromotor Machine generate electricity, variator controlled between neutral, electromotor, the first motor and the second motor mechanical be connected;
32) parallel drive pattern
Under this pattern, electromotor and the first motor or the second motor drive vehicle jointly, and two-way controllable overrunning clutch is excellent Select controlled in the pattern that is completely combined, the controlled a certain gear in 1,2,3 gears of multiple-speed gear-box;
33) series-parallel connection drive pattern
Under this pattern, electromotor is connected with the first motor, and the first motor charges for set of cells under the dragging of electromotor, sends out Motivation and the second motor parallel, electromotor and the second motor drive vehicle jointly, two-way controllable overrunning clutch preferably controlled in It is completely combined pattern, to ensure the reliable and stable transmission of engine power, multiple-speed gear-box is controlled a certain in 1,2,3 gears Gear;
4) energy recuperation mode
Under this pattern, the first motor or/and the second motor are dragged generating by counter, are that set of cells charges, by the kinetic energy of vehicle or Person's potential energy is reclaimed for electric energy.Now, double rolling key clutch preferably controlled in positive enable, reversely disable pattern, To avoid dragged counter to electromotor.
The invention has benefit that:
1) by the application of two-way controllable overrunning clutch, eliminate the friction-type of typically many gear-stage velocity ratios hybrid power system Clutch and special starter, so that mixed power system structure is compacter, control more simplification it is thus also avoided that using The cunning that slip clutch brings is rubbed energy loss, improves car load efficiency.
2) by the application of multiple-speed gear-box, improve engine operating efficiency in hybrid power system, optimize and start Machine operating mode, reduces the performance requirement of the first motor simultaneously, reduces its quality and size;By setting in multiple-speed gear-box downstream Put the second motor, improve driven by power and the efficiency of energy regenerating.
3) two-way controllable overrunning clutch adopting can be by multiple freewheel clutch warp such as roller, engagement type, Wedge-type Controlledization is transformed, and the design of this kind of transmission basic components, production technology all relative maturity are reliable;Continue to use traditional machine The lock unit of tool variator or engaging sleeve, and the same or analogous layout structure with traditional step type mechanical transmission;These The practical application all enabling the present invention continues to use ripe design, production technology, process equipment and industrial system to a great extent, Possess production inheritance be good, low cost, the advantages of be easily achieved.
The invention is particularly suited to plug-in hybrid-power automobile, meet the long-run development trend of Future New Energy Source automobile.
Brief description
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail:
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the schematic diagram of the specific embodiment of the invention 1;
Fig. 3 is the schematic diagram of the specific embodiment of the invention 2;
Fig. 4 is the schematic diagram of the specific embodiment of the invention 3.
Each in figure, 100- electromotor, 200- two-way controllable overrunning clutch, 201- two-way controllable overrunning clutch inner ring, 202- two-way controllable overrunning clutch outer ring, the unidirectional controllable overrunning clutch of 211- (positive), 212- unidirectional controllable over run clutch Device (reverse), 220- mono-directional overrun clutch, 300- first motor, 301- gear pair, 400- second motor, 402- gear pair, 500- variator, 501-1 keeps off gear pair, and 502-2 keeps off gear pair, and 503-3 keeps off gear pair, 511-1 gear and 2 gear lock units, 512-3 Gear lock unit, 521- input shaft, 522- output shaft, 600- set of cells, 700- main reducing gear, 800- differential mechanism, 900- wheel.
Specific embodiment
The concrete principle of the present invention and structure will be described in detail further by the following example and accompanying drawing.
Embodiment 1
Fig. 1 is a kind of embodiment of the present invention, the implementation method of the present invention further explained below, certain transmission gear Position sum can be not limited to 3 gears.
The hybrid power system of the present invention, includes electromotor 100, two-way controllable overrunning clutch 200, the first motor 300th, the second motor 400, multiple-speed gear-box 500, set of cells 600, one end of two-way controllable overrunning clutch 200 and electromotor 100 output shaft connects, and the other end of two-way controllable overrunning clutch 200 is connected with the output shaft of the first motor 300, multistage change The driving link of fast device 500 is connected with two-way controllable overrunning clutch 200, the driven member of multiple-speed gear-box 500 and the second motor 400 Output shaft connect, set of cells 600 supplies power to the first motor 300 and the second motor 400, by two-way controllable overrunning clutch The gear switching of 200 pattern and multiple-speed gear-box 500, realize multiple drivings that multi power source can partly or entirely participate in and Energy recuperation mode.China Patent Publication No. cn101806359 and cn202468962 etc. propose two-way controllable overrunning clutch Concrete technical scheme, therefore here not repeated description.
Described electromotor 100 is connected with the inner ring 201 of two-way controllable overrunning clutch 200, two-way controllable overrunning clutch 200 outer ring 202 is connected with the input shaft 521 of multiple-speed gear-box 500, or the outer ring of electromotor and two-way controllable overrunning clutch It is connected, the inner ring of two-way controllable overrunning clutch is connected with the input shaft of multiple-speed gear-box.
Described first motor 300 is connected with the input shaft 521 of multiple-speed gear-box 500 by gear pair 301, the first motor 300 are connected with two-way controllable overrunning clutch outer ring 202 by input shaft 521, and multiple-speed gear-box 500 includes 1 gear and 2 gears are same Step device 511,3 gear lock unit 512, keeps off, by controlling 1 gear and 2 gear lock units 511,3, Jie that related gear realized by lock unit 512 Enter or exit;Second motor 400 is connected with the output shaft 522 of multiple-speed gear-box 500 by gear pair 402, and output shaft 522 will move Power passes through main reducing gear 700, differential mechanism 800 is transferred to wheel 900, drives vehicle.
Described two-way controllable overrunning clutch 200 is to develop based on freewheel clutch principle to form, and partly or entirely has Positive transmission power or surmount, reverse power transmission or surmount, that bidirectional overtaking separates (being kept completely separate), bi-directional power is (complete Complete combine) etc. four kinds of mode of operations, can be, but not limited to by control each component of two-way controllable overrunning clutch (as retainer, Outer ring or inner ring etc.) relative motion, between these mode of operations realize switching.
Described multiple-speed gear-box 500 can be any speed ratio variset with on-off function, can be, but not limited to be Using multiple on off mechanism such as lock unit, engaging sleeve, clutch step type mechanical transmission it is also possible to but be not limited to adopt The mechanical continuously-variable transmission of the actuating devices such as steel band.
Described set of cells 600 can be any electric energy savings device, can be, but not limited to be Ni-MH battery group, lithium battery group Or other energy storage devices such as super capacitor, can be by extrapolation power source charges or otherwise from described hybrid power system System external complement energy.
Two-way controllable overrunning clutch is by the common overdrive clutch of roller (pearl) formula, engagement type, Wedge-type or other forms Device develops it is also possible to be combined by two unidirectional controllable overrunning clutch, as long as being applied to according to the present invention mixed Close dynamical system, its various change, equivalent, exchange and structure or arrangement change, the feature all without departing from present inventive concept and Scope.
According to the difference of hybrid power system state and vehicle behavior demand, the present embodiment has a following drive pattern:
One. pure electric drive mode
When set of cells 600 electricity is sufficient, hybrid power system is preferably in pure electric drive mode.
(1) first motor 300 is operated alone
Under this pattern, two-way controllable overrunning clutch 200 preferably controlled in the pattern that is kept completely separate (pattern three), electromotor 100 and second motor 400 be not involved in work, variator 500 controlled in 1,2,3 gear one of gear.
(2) second motors 400 are operated alone
Under this pattern, variator 500 controlled in neutral, electromotor 100 and the first motor 300 are not involved in work.
(3) bi-motor parallel drive
Under this pattern, the first unit 300 and the second motor 400 drive vehicle jointly.Two-way controllable overrunning clutch 200 is excellent Select controlled in the pattern that is kept completely separate (pattern three), electromotor 100 is not involved in work.Variator 500 controlled in 1,2,3 gears A certain gear.
Two. engine drive mode
Under this pattern, two-way controllable overrunning clutch 200 preferably controlled in the pattern that is completely combined (pattern one), to ensure to send out The reliable and stable transmission of motivation power.The controlled a certain gear in 1,2,3 gears of multiple-speed gear-box 500.
It should be noted that in the present embodiment, electromotor 100 starts by double without conventional starter, electromotor 100 Realize to controllable overrunning clutch 200 and the first motor 300 cooperating: two-way controllable overrunning clutch 200 controlled in reverse Enable, positive disability pattern (pattern two), the first motor 300 drives electromotor 100 to start, because now power can only be via double To controllable overrunning clutch 200 back transfer, electromotor 100 is rapidly achieved stable idling shape after starting in an unloaded situation State.
Three. electromotor and motor combination drive pattern
(1) increase journey pattern
When set of cells 600 not enough power supply, hybrid power system is preferably in increasing journey pattern and realizes pure electric drive.
Under this pattern, electromotor 100 is connected with the first motor 300, and the first motor 300 is under the dragging of electromotor 100 Set of cells 600 charges, and set of cells 600 is powered for the second motor 400, and the second motor 400 drives vehicle.
Now, two-way controllable overrunning clutch 200 preferably controlled in the pattern that is completely combined (pattern one), to realize electromotor 100 dragging the first motors 300 generate electricity.Variator 500 controlled in neutral.Electromotor 100, the first motor 300 and the second motor 400 Between mechanical connect.
(2) parallel drive pattern
Under this pattern, electromotor 100 and the first motor 300 or the second motor 400 drive vehicle, two-way controllable overrunning jointly Clutch 200 preferably controlled in the pattern that is completely combined (pattern one), to ensure the reliable and stable transmission of engine power, multistage change The controlled a certain gear in 1,2,3 gears of fast device 500.
(3) series-parallel connection drive pattern
Under this pattern, electromotor 100 is connected with the first motor 300, and the first motor 300 is under the dragging of electromotor 100 Set of cells 600 charges, and electromotor 100 is in parallel with the second motor 400, and electromotor 100 and the second motor 400 drive vehicle jointly, Two-way controllable overrunning clutch 200 preferably controlled in the pattern that is completely combined (pattern one), to ensure stably may be used of engine power By transmission, the controlled a certain gear in 1,2,3 gears of multiple-speed gear-box 500.
Four. energy recuperation mode
Under this pattern, the first motor 300 or (and) the second motor 400 is dragged generating by counter, is that set of cells 600 charges, by car Kinetic energy or potential energy reclaimed for electric energy.Now, double rolling key clutch is preferably controlled enables, reversely in positive Disability pattern (pattern four), to avoid dragged counter to electromotor 100.
Automobile primary wants the implementation method of operating mode:
One. vehicle starting or retroversion travel
When automobile needs starting or falls back traveling, according to extraneous and vehicle condition (as the gradient, load etc.), by pure electric drive One of pattern pattern is realizing.Starting and fall back travel main difference is that, the first motor 300 or (and) the second motor 400 direction of rotation is different.
Two. automobile gear shift
With in vehicle traveling process, external condition (as the gradient, road surface, windage etc.) or speed change, and need to become Fast device gear changes, and to meet traveling demand, and keeps electromotor or motor to be operated in greater efficiency region.
In the system, the power of electromotor 100 and the first motor 300 needs to export by multiple-speed gear-box 500, multistage change Fast device 500 gear switching also occur in electromotor 100 or (and) the first motor 300 directly drive vehicle each mode of operation In, but no matter under which kind of mode of operation, shift process is basically identical, below so that 2 gears rise up into 3 gears as a example, illustrates to shift gears Implementation method.
During 2 gear, 2 gear lock units 511 combine, and 3 gear lock units 512 separate, and power is inside multiple-speed gear-box 500 via defeated Enter axle 521,2 gear lock unit 511,2 gear gear pair 502, output shaft 522 exports.
Before rising up into 3 gears, complete first electromotor 100 or (and) the first motor 300 drive function to the second motor 400 Handing-over: the second motor 400 is gradually increased power, shunting electromotor 100 or (and) the driving function of the first motor 300, electromotor 100 or (and) the first motor 300 is correspondingly gradually reduced power, until driving function to be undertaken by the second motor 400 completely.
After second motor 400 undertakes whole driving functions, 2 gear lock units 511 separate, two-way controllable overrunning clutch 200 Preferably switch to the pattern of being kept completely separate (pattern three), when the first motor 300 rotating speed is adjusted to 3 gear rotating speed of target, 3 gear lock unit knots Close, two-way controllable overrunning clutch 200 preferably switches to positive enable pattern (pattern four), electromotor 100 or (and) the first electricity Machine 300 is gradually increased power, starts to undertake driving function, upshift process terminates.
Now, power inside multiple-speed gear-box 500 via input shaft 521,3 keep off lock unit 512,3 gear gear pair 503, Output shaft 522 exports.
Embodiment 2
The present embodiment is as shown in figure 3, the two-way controllable overrunning clutch 200 in the present embodiment is by unidirectional controllable over run clutch Device (positive) 211, unidirectional controllable overrunning clutch (reverse) 212 combination are formed, four kinds of works of two-way controllable overrunning clutch 200 Operation mode is as shown in table 1 with the pattern corresponding relation of unidirectional controllable overrunning clutch 211,212.Comparatively, unidirectional controlled super More clutch simple production process, low cost of manufacture, reliable operation.
The mode of operation comparison that table 1 two-way controllable overrunning clutch is combined with unidirectional controllable overrunning clutch
Two-way controllable overrunning clutch Unidirectional controllable overrunning clutch (positive) Unidirectional controllable overrunning clutch (reverse)
It is completely combined (pattern one) Enable Enable
Reversely enable (pattern two) Disability Enable
It is kept completely separate (pattern three) Disability Disability
Positive enable (pattern four) Enable Disability
Embodiment 3
The present embodiment is as shown in Figure 4.Common mono-directional overrun clutch 220 in the present embodiment, is equivalent to two-way controlled super More clutch 200 only has positive enable pattern (pattern four), due to the dynamic transfer characteristics of mono-directional overrun clutch, in this reality Apply in example, electromotor 100 needs to realize engine start with starter.
Need to particularly point out at 2 points from the angle of practical implementation.First point, common one-way clutch 220 is in for a long time When surmounting state, its drive disk assembly has larger abrasion, will lead to lose efficacy during serious wear.Second point, electromotor 100 output has Torque ripple, the common one-way clutch 220 of unidirectional delivery power can only may cause extraneous vibration, thus affecting system dynamic Output stability.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right The restriction of embodiments of the present invention.For those of ordinary skill in the field, also may be used on the basis of the above description To make other changes in different forms, there is no need to be exhaustive to all of embodiment.All this Any modification, equivalent and improvement made within the spirit of invention and principle etc., should be included in the claims in the present invention Protection domain within.

Claims (9)

1. a kind of hybrid power system it is characterised in that include electromotor, two-way controllable overrunning clutch, the first motor, Two motors, multiple-speed gear-box, set of cells, one end of two-way controllable overrunning clutch is connected with the output shaft of electromotor, two-way can The other end of control freewheel clutch is connected with the output shaft of the first motor, the driving link of multiple-speed gear-box and two-way controllable overrunning from Clutch connects, and the driven member of multiple-speed gear-box is connected with the output shaft of the second motor, battery-powered to the first motor and second Motor, by the pattern of two-way controllable overrunning clutch and the gear switching of multiple-speed gear-box, realizing multi power source being capable of part Or whole multiple drivings participating in and energy recuperation mode;Described first motor passes through the input shaft of gear pair and multiple-speed gear-box It is connected, the first motor is connected with two-way controllable overrunning clutch outer ring by input shaft, multiple-speed gear-box includes 1 gear and 2 gears Lock unit, 3 gear lock units, realize the intervention of related gear by control 1 gear and 2 gear lock units, 3 gear lock units or exit; Second motor is connected with the output shaft of multiple-speed gear-box by gear pair, and power is passed through main reducing gear by output shaft, differential mechanism passes It is handed to wheel, drive vehicle.
2. hybrid power system according to claim 1 is it is characterised in that described electromotor and two-way controllable overrunning clutch The inner ring of device is connected, and the outer ring of two-way controllable overrunning clutch is connected with the input shaft of multiple-speed gear-box;Or electromotor with two-way The outer ring of controllable overrunning clutch is connected, and the inner ring of two-way controllable overrunning clutch is connected with the input shaft of multiple-speed gear-box.
3. hybrid power system according to claim 1 is it is characterised in that described two-way controllable overrunning clutch is to be based on Freewheel clutch principle develops and forms, partly or entirely have positive transmission power or surmount, reverse power transmission or surmount, double To surmount separate, four kinds of mode of operations of bi-directional power;It is two-way controlled super that described two-way controllable overrunning clutch passes through control The relative motion of the more retainer, outer ring or inner ring of clutch is realized switching between these mode of operations.
4. hybrid power system according to claim 1 is it is characterised in that described multiple-speed gear-box is with on-off function Speed ratio variset.
5. hybrid power system according to claim 1 is it is characterised in that described multiple-speed gear-box is with lock unit, engagement Set, clutch are as the step type mechanical transmission of on off mechanism.
6. hybrid power system according to claim 1 is it is characterised in that described set of cells is electric energy savings device.
7. hybrid power system according to claim 6 is it is characterised in that described set of cells is Ni-MH battery group, lithium battery Group or super capacitor.
8. hybrid power system according to claim 7 is it is characterised in that described set of cells passes through extrapolation power source charges.
9. a kind of control method of hybrid power system is it is characterised in that according to hybrid power system state and vehicle behavior demand Difference there is following drive pattern:
1) pure electric drive mode
When battery electric quantity is sufficient, hybrid power system is in pure electric drive mode,
11) the first motor is operated alone
Under this pattern, two-way controllable overrunning clutch is controlled, and in the pattern that is kept completely separate, electromotor and the second motor are not involved in work, Variator controlled in 1,2,3 gear one of gear;
12) the second motor is operated alone
Under this pattern, variator controlled in neutral, electromotor and the first motor are not involved in work;
13) bi-motor parallel drive
Under this pattern, the first unit and the second motor drive vehicle jointly,
Two-way controllable overrunning clutch is controlled, and in the pattern that is kept completely separate, electromotor is not involved in work, and variator is controlled to be kept off in 1,2,3 A certain gear in position;
2) engine drive mode
Under this pattern, two-way controllable overrunning clutch controlled in the pattern that is completely combined, multiple-speed gear-box controlled in 1,2,3 gears A certain gear;Electromotor is joined with the first motor by two-way controllable overrunning clutch without conventional starter, engine start Close work to realize: two-way controllable overrunning clutch controlled in reverse enable, positive disability pattern, the first motor drives electromotor to open Dynamic, because now power can only be via two-way controllable overrunning clutch back transfer, in non-loaded situation after engine start Under be rapidly achieved stable idling mode;
3) electromotor and motor combination drive pattern
31) increase journey pattern
When battery electric quantity is not enough, hybrid power system is in increasing journey pattern and realizes pure electric drive,
Under this pattern, electromotor is connected with the first motor, and the first motor charges for set of cells under the dragging of electromotor, set of cells Power for the second motor, the second motor-driven vehicle;
Now, two-way controllable overrunning clutch controlled in being completely combined pattern, drag the first electric power generation to realize electromotor, become Fast device controlled between neutral, electromotor, the first motor and the second motor mechanical be connected;
32) parallel drive pattern
Under this pattern, electromotor and the first motor or the second motor drive vehicle jointly, two-way controllable overrunning clutch controlled in It is completely combined pattern, the controlled a certain gear in 1,2,3 gears of multiple-speed gear-box;
33) series-parallel connection drive pattern
Under this pattern, electromotor is connected with the first motor, and the first motor charges for set of cells under the dragging of electromotor, electromotor With the second motor parallel, electromotor and the second motor drive vehicle jointly, two-way controllable overrunning clutch controlled in being completely combined Pattern, to ensure the reliable and stable transmission of engine power, the controlled a certain gear in 1,2,3 gears of multiple-speed gear-box;
4) energy recuperation mode
Under this pattern, the first motor or/and the second motor are dragged generating by counter, are that set of cells charges, by the kinetic energy of vehicle or gesture Electric energy can be converted into reclaimed, now, double rolling key clutch controlled in positive enable, reversely disable pattern, right to avoid Electromotor is counter to be dragged.
CN201410041212.4A 2014-01-28 2014-01-28 Hybrid power system and control method thereof Expired - Fee Related CN103802663B (en)

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CN106427528A (en) * 2016-08-31 2017-02-22 东风商用车有限公司 Mild hybrid system of diesel engine
CN107600257B (en) * 2017-09-06 2020-10-30 长沙小新新能源科技有限公司 Scooter for disabled people
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