CN102941809B - Buffer for storing energy and assisting power for electric automobile - Google Patents

Buffer for storing energy and assisting power for electric automobile Download PDF

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Publication number
CN102941809B
CN102941809B CN201210489694.0A CN201210489694A CN102941809B CN 102941809 B CN102941809 B CN 102941809B CN 201210489694 A CN201210489694 A CN 201210489694A CN 102941809 B CN102941809 B CN 102941809B
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spring
energy
output shaft
spline
energy storage
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CN102941809A (en
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赵玉宝
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Changshu intellectual property operation center Co.,Ltd.
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SHENZHEN CITY LICHI ELECTRIC AUTOMOBILE CO Ltd
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Abstract

A method and a buffer for storing energy and assisting power for an electric automobile belong to the field of electric automobiles. The method and the buffer are characterized in that a spring is used for storing energy output by a driving motor spindle, and a middle transition shaft is arranged between the driving motor spindle and a terminal output shaft. During initial rotation of the driving motor spindle, under the effect of the middle transition shaft, the spring can be contracted and then releases energy, and the terminal output shaft rotates fast. The energy-storage spring is used for storing the initial rotation energy of a motor shaft, and when the energy stored in the spring and driving energy of a motor exceed resistance of the automobile, the energy storage spring releases energy so that output power can be greatly improved instantly, starting is fast, and no large current outputs. The service life of electric components is prolonged. Due to the fact that difference of power of the initially pressed spring and power of the spring pressed to the end is large, compression and releasing of the spring are sufficient to enable the transmission to be soft. Drivers feel comfortable and can feel soft acceleration and strong starting during a driving period.

Description

A kind of electronlmobil energy storage force-aid buffering device
Technical field
The invention belongs to electronlmobil field, be specifically related to a kind of energy storage power-assisted and shock absorber of electronlmobil.
Background technology
Along with the continuous rise of crude oil price and the needs of Environmental Protection in China, new-energy automobile becomes the industry that state key is helped development.For many years, electronlmobil is progressively accepted Bing You government by the common people and is promoted development.Because vehicular energy Hai No has the requirement that reaches people, but the research and development of electronlmobil are very urgent again, so all kinds of battery-driven cars emerges in an endless stream in the market.Due to electronlmobil also No have as gasoline car perfectly, also No has a mode standard, so very eurypalynous so-called electronlmobil also only limits to tour bus structure, its purposes is very limited.Current electronlmobil is generally directly to drive a drop-gear box by alternating current dynamo or DC machine, then connects differential gear jackshaft and then drive wheel, and the electronlmobil Zhong Jian An Installed also having has power-transfer clutch and change-speed box, the Zhi An Installed change-speed box also having.
Electrical motor directly drives vehicle, in flat road surface, slowly starting effect is all right, but if go up a slope starting, or violent acceleration suddenly, fast startings etc., just there will be electrical motor overload operation, make motor, automatically controlled, battery, wire produce high temperature, in the course of time, electric elements premature aging, insulation degree declines; And High-current output is not equal to Same Efficieney output, a lot of electric energy all changes into high Warm, consume in vain, and high Warm also can make internal resistance strengthen, and power reduces.
The high temperature that the output of super-high-current occurs destroys, and the generation probability of moment is very high.Because electronlmobil is textural different with gasoline automobile in performance, gasoline automobile has change speed gear box can change speed ratio enhancing torsion, and electronlmobil can only lean on slow speed of revolution, the high pulling torque of electrical motor to realize low speed starting.But the propulsion source of any mechanical type is all that the efficiency than low speed is at a high speed high a lot.And electronlmobil is by there is mechanical transmission to regulate different rotating speeds demand in No, can only lean on particularity and the electric controller of electrical motor to carry out regulation speed, so the contradiction that designer will calculate the running at high speed of flat road surface repeatedly, mechanical drive is counted ratio between the fast starting suddenly accelerated.
Travelling of electronlmobil depends on the co-ordination of each electric elements, but instantaneous large-current output while starting fast can bring Latent destruction to electric elements again.Electric elements has certain requirement for operating temperature, therefore, for the designer in electronlmobil field, must go to address this problem.
Summary of the invention
In order to overcome prior art deficiency, the invention provides a kind of electronlmobil energy storage force-aid buffering device, the instantaneous power in the time of significantly improving vehicle launch, the High-current output while avoiding stall start.
The technical solution adopted for the present invention to solve the technical problems is: invent a kind of electronlmobil energy storage force-aid buffering device, it is characterized in that comprising end cap, screw spindle, spline mother, energy stroage spring and internal spline output shaft cover; The female connection that matches with the external spiral of screw spindle of spline, one end of energy stroage spring and spline parent phase company, the other end and internal spline output shaft cover are connected; One end of internal spline output shaft cover is connected with end cap, the other end is connected terminal output shaft; The middle part of internal spline output shaft cover is hollow cavity structure, and screw spindle, spline mother, energy stroage spring are all positioned in the hollow cavity of internal spline output shaft cover.
For realizing better spline mother along the movement of screw spindle, the helical angle of screw spindle is 15 °-60 °.Produce very large axial force when avoiding the female return of spline and bearing is produced destructive, the bearing of support helix main shaft adopts single row angular contact ball bearing or single-row tapered roller bearing.
For reducing vibrations and noise, on the internal spline output shaft cover inner end surface being connected with energy stroage spring, overburden rubber buffer ring is set.The female reset buffering rubber ring of spline is set on the inner end surface of end cap.
The present invention also provides another kind of electronlmobil energy storage force-aid buffering device, it is characterized in that comprising overriding clutch, around spring, around spring output sleeve and terminal output shaft, around spring, be wrapped on spring output sleeve, around one end of spring, be connected with overriding clutch driving link, the other end with around spring output sleeve, be connected; One end around spring output sleeve is connected with overriding clutch driven member, the other end and terminal output shaft are movably connected.
The other end and terminal output shaft around spring output sleeve adopt spline joint.
The beneficial effect that the present invention has is:
1. the present invention adopts energy stroage spring by the energy storage of motor shaft initial rotation, when the energy in being stored in spring and the driving-energy of motor surpass automobile resistance, energy stroage spring moment releases energy fast, can moment significantly improve horsepower output, starts fast and without High-current output.
2. the energy due to motor shaft initial rotation is converted to mechanical energy storage, has reduced the bad conversion of heat energy, has reduced the temperature of electric elements, has extended the service life of electric elements, and the travelled distance of electronlmobil is increased greatly.
3. because energy stroage spring initial depression and while being pressed onto the end strength differ greatly, different resistance to motions produces different spring-compresseds, release in motion, be enough to make transmission soft, chaufeur feels comfortably cool, and makes to feel during travelling very soft acceleration and powerful driving.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the invention;
Fig. 2 is A-A cutaway view of Fig. 1;
Fig. 3 is the unpressed not working state schematic representation of spring embodiment illustrated in fig. 1;
Fig. 4 is the structural representation of second embodiment of the invention;
Fig. 5 is B-B cutaway view of Fig. 4;
In figure: 1. drive motor main shaft; 2. single row angular contact ball bearing; 3. the female reset buffering rubber ring of spline; 4. shell; 5. screw spindle; 6. spline is female; 7. internal spline output shaft cover; The female peripheral spline of 7-1. spline; 8. energy stroage spring; 9. overburden rubber buffer ring; 10. terminal output shaft; 11. end cap; 12. overriding clutch; 12-1. overriding clutch driving link; 12-2. overriding clutch driven member; 13. around spring; 14. around spring output sleeve.
The specific embodiment
The method of electronlmobil energy storage power-assisted of the present invention, its essence is the energy storage of drive motor main shaft being exported with spring, between drive motor main shaft and terminal output shaft, middle transition axle is set; During drive motor main shaft initial rotation, under the effect of middle transition axle, can be by spring contraction; Then spring releases energy, and drives terminal output shaft fast rotational.According to this invention thinking, spring can adopt stage clip, and the energy of the compressed storage of pressured spring drives terminal output shaft moment increasing power stage; Spring also can adopt around spring, and by reduced outside diameter, the mechanically deform energy that increases the number of turns carries out stored energy, drives terminal output shaft moment increasing power stage.
Below set forth the concrete device embodiment that realizes the method for the invention.
Embodiment mono-:
As shown in Figure 1, the accumulator described in the present embodiment is mainly comprised of screw spindle 5, spline mother 6, energy stroage spring 8, internal spline output shaft cover 7, shell 4 and end cap 11.The connection that matches with the external spiral of screw spindle 5 of spline mother 6 central bore, one end of energy stroage spring 8 and spline female 6 is connected, the other end and internal spline output shaft overlap 7 and be connected, one end of internal spline output shaft cover 7 is connected with end cap 11, the other end is connected terminal output shaft 10, the middle part of internal spline output shaft cover 7 is hollow cavity structure, and screw spindle 5, spline mother 6, energy stroage spring 8 are all positioned in the hollow cavity of internal spline output shaft cover.Medium position at end cap 11 arranges single row angular contact ball bearing 2, and the internal spline output shaft being connected with energy stroage spring 8 overlaps on 7 inner end surfaces overburden rubber buffer ring 9 is set, and the female reset buffering rubber ring 3 of spline is set on the inner end surface of end cap 11.
Below set forth principle of work and the working process of the present embodiment:
Accumulator is arranged on drive motor main shaft 1, and installation method is: the interior placement single row angular contact ball bearing 2 of end cap 11, drive motor main shaft 1 is supported by single row angular contact ball bearing 2, and is connected with screw spindle 5.
When vehicle start, the synchronous initiation at once because breakaway force is very large, so, the twirl that drive motor main shaft 1 is unexpected, first drive screw spindle 5 rotations, when screw spindle drive to be rotated by motor, spline mother 6, in rotary state not, acts on spline mother 6 between helix line, spline mother 6 certainly will move along the helix line on screw spindle 5, energy stroage spring 8 is constantly compressed, and the pressure of energy stroage spring 8 increases suddenly, and the energy storage that is equivalent to motor to send is in energy stroage spring 8.Vehicle now enters soon starting state the sixth of the twelve Earthly Branches under the effect of external force.Drive motor main shaft 1 is rotated further, and vehicle starts slight movement.Once mobile when vehicle, resistance can reduce at once, be now stored in energy in energy stroage spring 8 and the driving-energy of motor and surpass automobile resistance, 8 moments of energy stroage spring discharge fast, promote female 6 returns of spline when discharging.Because female 6 peripheries of spline have spline and coordinate with the Inner spline 7-1 of internal spline output shaft cover 7, thereby can not produce relative rotation between them.And when female 6 return of spline, must rotate along the hand of helix of screw spindle 5 could return.Therefore, internal spline output shaft cover 7, key female 6 are done equidirectional rotation together with screw spindle 5, and the rotation of internal spline output shaft cover 7 drives terminal output shaft 10 moments increasing power stage, electronlmobil moment high-power start.
Under spline mother 6 is promoted by energy stroage spring Final 8 strength, spline mother 6 is forced to release energy along helical rotation, by spline, the Energy Transfer storing is overlapped to 7 to internal spline output shaft, coordinates drive motor main shaft 1 horsepower output, played the effect of moment power-assisted, vehicle is just in moment quick start.In the time of this macro-energy output, electric current output is far smaller than the gross horsepower machinery output of making a concerted effort.Because when electrical motor initial rotation, vehicle Bing No has action, but energy storage is got up, once energy storage finishes, just at once in conjunction with the abrupt release simultaneously of motor propulsive effort, everything all occurs in moment, and powerful can, car moment driving, make the delay resistance moment reduction of automobile with joint efforts.
Through said process, accumulator gets up the initial output energy storage of drive motor, is converted into the high-performance mechanical energy of abrupt release, and this mechanical energy is greater than the maximum power of drive motor own, therefore also Zhe Installed can be put and is considered as " mechanical capacitance ".Electronlmobil normally at the uniform velocity or while accelerating, accumulator can generation effect.But when vehicle fast starting, accumulator just plays a significant role, the zero energy of drive motor is stored and transformed.Like this,------energy storage again---cyclic process travelling travels in the process of electric automobile during traveling, just can constantly to occur energy storage.
In addition, to also have a function be soft transmission to accumulator.Electronlmobil, when starting, if accelerated suddenly in flat road surface, is all hard transmission because output to drop-gear box, diff etc. from electrical motor, inevitably has shock sense in various degree during starting, and it is very stiff to make to drive.Auto-wave automobile is hydraulic transmission, so feel very soft.And electronlmobil is rigid transmission, misoperation, will inevitably produce and clash into sense, if use accumulator on electronlmobil, this shock is sympathetic can disappear, and makes to drive more comfortable.Because energy stroage spring initial depression and while being pressed onto the end strength differ greatly, if in flat road surface, the violent fast starting that refuels, the 20-40% vehicle that spring is depressed total amount has just normally travelled, and the compression of this 20-40%, release are enough to make transmission soft, chaufeur feels comfortably cool, and when normally travelling, also can constantly have intermittent compression, the release of 10-30%.Make to feel during travelling very soft acceleration and powerful driving.
In the present embodiment, the spiral angle of screw spindle 5 depends on the operating needs of automobile.Little helical angle, when storing and releasing energy, power is large, the time is short; Large helical angle, when storing and releasing energy, power is little, the time is long.The size of spiral angle will decide according to different operatings needs.Generally with 15 °-60 °, be advisable, the best is at 45 °.
In the present embodiment, the internal spline output shaft being connected with energy stroage spring 8 overlaps overburden rubber buffer ring 9 is set on 7 inner end surfaces; The female reset buffering rubber ring of spline is set on the inner end surface of end cap.Vibrations and noise when its object is to reduce the female collision of spline also plays buffer action.
Energy stroage spring releases energy, and the thrust that the female return of spline produces is very large, can produce very large axial force.If bearing adopts general centripetal force bearing, be easy to bearing to destroy during the female return of spline.For this reason, the bearing of support drive electric machine main shaft 1 adopts single row angular contact ball bearing or single-row tapered roller bearing, the life-span that can greatly improve bearing.
In the present embodiment, screw spindle 5 is middle transition axle, by it, the initial rotation function of drive motor is converted into the potential energy of energy stroage spring.
The maximum output power of electrical motor is through screw spindle and spline imperial mother, can be reluctantly energy stroage spring be pressed onto spline female with overburden rubber buffer ring after stop.Now current indication is for approaching electrical motor peak current.Equally, the energy storage compression resistant ability of stage clip and the maximum power of motor match.
Embodiment bis-:
As shown in Figure 4, accumulator comprises overriding clutch 12, around spring 13, around spring output sleeve 14 and terminal output shaft 10, around spring 13, be wrapped on spring output sleeve 14, around one end of spring 13, be connected with overriding clutch driving link 12-1, the other end with around spring output sleeve 14, be connected; One end around spring output sleeve 14 is connected with overriding clutch driven member 12-2, the other end is connected by spline with terminal output shaft 10.
Below set forth principle of work and the working process of the present embodiment:
Overriding clutch 12 is connected with drive motor main shaft 1.When vehicle start, the synchronous initiation at once because breakaway force is very large, so the twirl that drive motor main shaft 1 is unexpected, can only make the less first rotation of internal resistance.Drive motor main shaft 1 rotates, and drives overriding clutch driving link 12-1 rotation, to being inserted in being wound around around spring 13 on overriding clutch driving link.Along with the rotation of drive motor main shaft 1, around spring 13, through cooling diameter, diminish, pitch diminishes simultaneously.The energy storage that is equivalent to motor to send is in spring 13.Drive motor main shaft 1 is rotated further, and stored energy is increasing, once park after resistance when it is greater than, around spring 13, release energy immediately, drive is rotated around spring output sleeve 14, and moment strengthens power stage power is directly passed to terminal output shaft 10, vehicle launch fast.At vehicle, to overtake in process, the driving link of overriding clutch and driven member are in released state, always by driving around spring output sleeve 14 and rotate around spring 13, flexible transmitted power.
During reversing, drive motor main shaft 1 rotates backward, and overriding clutch driving link 12-1 and overriding clutch driven member 12-2 are pressed on together in aggregates being connected of shape by intermediary's roller and synchronously rotate, and then drive 10 rotations of drive axle axle, vehicle travel backwards.In this process, around spring 13, do not bring into play any effect.
It should be noted that vehicle launch moment, along with the rotation of drive motor main shaft 1, around the diameter of spring 13 and pitch, always in change procedure, cause constantly changing around the length of spring.Variation around spring length must cause the sway around spring output sleeve 14.For this reason, make to adopt spline joint between the other end of spring output sleeve 14 and terminal output shaft 10.The mode of spline joint is flexible connection, so, no matter, around spring output sleeve 14 sway how, all can be connected with terminal output shaft 10.Certainly, in order to realize around being flexibly connected between spring output sleeve 14 and terminal output shaft 10, those of ordinary skills also easily can expect adopting common key to connect.In this case, can be on the end outer shaft around spring output sleeve 14 retainingf key, on terminal output shaft 10, offer keyway.
In the present embodiment, around spring output sleeve 14, overriding clutch driving link 12-1 and overriding clutch driven member 12-2, form middle transition axle, by it, the initial rotation function of drive motor is converted into the winding stored energy around spring 13.
In the present embodiment, the maximum output power of electrical motor can be reluctantly being wrapped in around spring on the hollow external diameter of overriding clutch driven member.Now current indication is for approaching electrical motor peak current.Equally, around the anti-winding deformability of maximum of spring and the maximum output power of electrical motor, match.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.

Claims (7)

1. an electronlmobil energy storage force-aid buffering device, is characterized in that comprising end cap, screw spindle, spline mother, energy stroage spring and internal spline output shaft cover; The female connection that matches with the external spiral of screw spindle of spline, one end of energy stroage spring and spline parent phase company, the other end and internal spline output shaft cover are connected; One end of internal spline output shaft cover is connected with end cap, the other end is connected terminal output shaft; The middle part of internal spline output shaft cover is hollow cavity structure, and screw spindle, spline mother, energy stroage spring are all positioned in the hollow cavity of internal spline output shaft cover.
2. a kind of electronlmobil energy storage force-aid buffering device according to claim 1, is characterized in that, at the medium position of end cap, bearing is set, and bearing adopts single row angular contact ball bearing or single-row tapered roller bearing.
3. a kind of electronlmobil energy storage force-aid buffering device according to claim 1 and 2, the helical angle that it is characterized in that screw spindle is 15 °-60 °.
4. a kind of electronlmobil energy storage force-aid buffering device according to claim 3, arranges overburden rubber buffer ring on the internal spline output shaft cover inner end surface that it is characterized in that being connected with energy stroage spring.
5. a kind of electronlmobil energy storage force-aid buffering device according to claim 4, is characterized in that arranging the female reset buffering rubber ring of spline on the inner end surface of end cap.
6. an electronlmobil energy storage force-aid buffering device, it is characterized in that comprising overriding clutch, around spring, around spring output sleeve and terminal output shaft, around spring, be wrapped on spring output sleeve, around one end of spring, be connected with overriding clutch driving link, the other end with around spring output sleeve, be connected; One end around spring output sleeve is connected with overriding clutch driven member, the other end and terminal output shaft are movably connected.
7. a kind of electronlmobil energy storage force-aid buffering device according to claim 6, is characterized in that adopting spline joint around the other end and the terminal output shaft of spring output sleeve.
CN201210489694.0A 2012-11-27 2012-11-27 Buffer for storing energy and assisting power for electric automobile Active CN102941809B (en)

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CN106907399B (en) * 2017-04-19 2023-09-22 河北工业大学 Buffer type main shaft of wind driven generator
CN107131160B (en) * 2017-06-30 2018-12-25 威马智慧出行科技(上海)有限公司 A kind of electric car driving energy-storage system and electric car
CN109291896A (en) * 2018-10-26 2019-02-01 韩昭 Brake energy-storage booster
CN112865407B (en) * 2021-01-20 2022-06-07 西湖大学 Motor energy storage braking device and navigation device

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GB8407178D0 (en) * 1984-03-20 1984-04-26 Westinghouse Brake & Signal Braking systems
DE19617796C2 (en) * 1996-05-03 1998-02-26 Knorr Bremse Systeme Electromechanical actuation device for disc brakes of rail vehicles
DE19945701A1 (en) * 1999-09-23 2001-04-19 Knorr Bremse Systeme Brake actuator
CN2687366Y (en) * 2003-12-22 2005-03-23 邝建华 Mechanical energy storage device
CN2680569Y (en) * 2004-01-14 2005-02-23 赵永军 Torsion spring booster
CN1958323A (en) * 2006-11-24 2007-05-09 丰日电气集团股份有限公司 Mechanical accumulation installation for electric automobile

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