CN2478837Y

CN2478837Y - Double-motor differential veriable-speed gear

Info

Publication number: CN2478837Y
Application number: CN 01200760
Authority: CN
Inventors: 魏益堂
Original assignee: BOJIA ENERGY SOURCE SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: BOJIA ENERGY SOURCE SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2001-01-19
Filing date: 2001-01-19
Publication date: 2002-02-27
Anticipated expiration: 2011-01-19

Abstract

The utility model relates to a double-motor differential variable-speed gear which comprises a shell body, a main motor, an auxiliary motor, a gear set and an output axis, wherein the main motor and the auxiliary motor are respectively arranged in the shell body, the gear set is driven by the main motor and is arranged in the shell body, and one end of the output axis extends out of the shell body. The gear set is provided with a sun gear driven by the auxiliary motor, a plurality of planetary gears driven by the main motor and meshed with the sun gear, and an external gear meshed with the planetary gears, wherein the external gear is fixedly arranged on an output frame. The utility model not only increases the convenience of riders, but also assures the optimum states of the output revolution rate and torque force of the motors; the utility model can sufficiently save electric energy and enhance the range ability of electric vehicles.

Description

Double motor differential transmission system

The utility model relates to a kind of differential transmission system, particularly relates to a kind of double motor differential transmission system that is used for battery-driven car.

Electro-motor is the core of battery-driven cars such as Electrical Bicycle or battery-operated motor cycle, the torque magnitude that motor can provide, dominate the accelerating ability and the gradeability of battery-driven car, fast for asking battery-driven car can quicken when the static starting, and can comply with the upward slope landform, wish all that generally motor can provide high torsion when slow speed of revolution.

In ideal conditions, multiply by torsion though can suppose the rotating speed that the intake of motor should equal motor; In other words, force down motor rotary speed in the time of can or going up a slope in starting in theory and promote torsion, when running into flat road surface or descending, reduce torsion again and improve rotating speed, but unfortunately, motor is not according to above-mentioned linear inverse relation when truly turning round, but the special operational range of the Cui of conversion efficiency is arranged, if the Cui scope of the energy conversion efficiency of selected motor is at the rotating speed higher position, force down motor rotary speed even import a large amount of electric energy and force, also will be because of the synchronous serious consume of energy, make the meaningless heating of motor, not only can not come significantly to improve torsion as required, cause the motor life impairment on the contrary, on the contrary, if condescend to take this post aforementioned need, select the Cui of energy conversion efficiency to be in slow speed of revolution and the motor of high torsion is provided simultaneously, battery-driven car will be absorbed in only suitable low speed driving, be not easy to draw high the awkward situation of road speed; Increase the electric energy input even force, also will significantly reduce the energy conversion efficiency of motor,, also can cause the endurance of battery-driven car to reduce because of the excess waste electric energy even if improve the speed of a motor vehicle reluctantly because of operational range away from the Cui of conversion efficiency.

This awkward predicament has become battery-driven car dealer's nightmare undoubtedly, so, constantly be absorbed in the increase motor power, increase in the vicious circle that storage battery capacity or the like can make car weight and cost significantly increase and usefulness is still unclear, so develop the electric locomotive that, at grade climbing performance, aspects such as endurance all can not show a candle to the locomotive of any a use Gasoline engine, especially, when battery-driven car when quiescence starts, if it is too little to control electric switch, the motor undercapacity is when quickening, and the rider can be forced to strengthen electric switch naturally, causes the torsion of motor to rise rapidly, and the rotating speed of motor rises synchronously with torsion, cause that battery-driven car is quick-fried to be dashed, rider's majority of Electrical Bicycle and locomotive even Segway Human Transporter all is the old and the weak women and children at present, and this design has seriously influenced the personnel's that drive safety.

In order to address the above problem, there has been the part dealer on battery-driven car, to install a transmission system, by selecting different motors and gear ratio, using power apparatus can be in response to various road conditions, and the output of adjustment torsion, as Fig. 1 and shown in Figure 2, the transmission system 10 of this general Electrical Bicycle 1 comprises a carrier 12 that is installed on the vehicle frame 11, be arranged at the two motor 13 on the carrier 12 respectively, be arranged on the carrier 12 and be subjected to the pinion gear group 14 of motor 13 interlocks, one end extends the speed change axostylus axostyle 15 outside the carrier 12, an and fluted disc 112 that is installed in rear wheel 111 and driven by speed change axostylus axostyle 15, but the different variable gear 16 of these pinion gear group 14 interlocks two diameters, 16 ', in addition, being installed with two on this speed change axostylus axostyle 15 can be respectively and corresponding variable gear 16,16 ' the transmission gear that is meshed 17,17 ', simultaneously, the end of this speed change axostylus axostyle 15 is provided with a crowngear 18 that is meshed with fluted disc 112.

When starting, climbing etc. need the road conditions of high torsion, the user is by operation one controller (not shown), control speed change axostylus axostyle 15 moves down, transmission gear 17 ' on the speed change axostylus axostyle 15 and variable gear 16 ' engagement, make the pattern of speed change axostylus axostyle 15, drive Electrical Bicycle 1 and travel with low speed, big torsion; On the contrary, if speed change axostylus axostyle 15 is up moved, will make speed change axostylus axostyle 15 high speed revolutions by another transmission gear on the speed change axostylus axostyle 15 17 and variable gear 16 engagements, therefore the speeding up of Electrical Bicycle 1, torsion reduce; In addition, when the transmission gear 17,17 ' of speed change axostylus axostyle 15 does not all mesh with variable gear 16,16 ' is neutral, the user shifts gears according to the road conditions of travelling in good time, makes Electrical Bicycle 1 obtain optimal rotating speed and torsion under the less situation of consumes power.

This two retaining speed changes of borrowing of the transmission system of Electrical Bicycle 1, the rotating speed and the torsion of 1 output of regulation and control Electrical Bicycle, and the design that electric quantity consumption is comparatively saved still have following disappearance in practicality, and details are as follows one by one now:

1 motor institute's outputting torsion and rotating speed range limited: because in the general transmission system 10, can only rely on the transmission gear 17,17 ' of control speed change axostylus axostyle 15 to be meshed with variable gear 16,16 ', decide speed, the torsion of 15 outputs of speed change axostylus axostyle, in other words, speed change axostylus axostyle 15 can not change outputting torsion and rotating speed automatically according to environmental demand.

2 gears wear away easily: general transmission system is when gearshift, it is the transmission gear of borrowing on the speed change axostylus axostyle 15 17,17 ' with variable gear 16,16 ' be meshed due to, but because transmission gear 17,17 ' with variable gear 16, any power-transfer clutch is not set between 16 ', and switch to the high speed gear process from gear at a slow speed, meeting elder generation is through the momentary state of one section neutral, can rationally study and judge, when the rider adds electric switch, motor 13 rotating speeds improve Hou, automatically (or manual) switches gear, motor 13 changes no-load condition into from the high load condition of low gear ratio on the contrary, rotating speed increases substantially rapidly, transmission gear 17 is not having to snap in gear under the situation of power-transfer clutch than higher variable gear 16 gears again at once, similarly, also need earlier when slowing down gearshift through one section neutral no-load condition, so when transmission system is shifted gears, transmission gear 17,17 ' can be after neutral be quickened, snap in variable gear 16 by force, 16 ', all must experience strong pushing at every turn, just can be meshing with each other, vibrations and noise when not only causing gearshift, more can under use for years, damage variable gear 16 early, 16 '.

3 power consumption are big: in the Electrical Bicycle 1 consumption of current the most serious no more than motor 13, and the design of this transmission system, because two tool motors 13 all will continue to keep running, just selecting which tool motor to drive speed change axostylus axostyle 15 by according to circumstances rotates, so the dual power consumption of two tool motors 13 can't reduce.

The purpose of this utility model is to provide a kind of double motor differential transmission system, can control outputting torsion by the differential that changes two motors changes, and then reduce gear abrasion and energy savings, the selectivity in the time of can reaching continuous variable speed again and can increase use, and make speed-change process smooth-going; Also can be with the automatic feedback of speed of a motor vehicle control motor torsion and rotating speed, make motor outputting torsion and rotating speed remain on Cuiization state, effective conserve energy, increasing endurance, and the increase user regulates and control convenience.

According to above-mentioned purpose, the utility model provides a kind of double motor differential transmission system, the housing that includes a tool accommodation space, be arranged at main motor and auxiliary motor in the housing respectively, one gear cluster that is arranged in the accommodation space and driven by main motor, and one end extend the outer force-output shaft of housing, it is characterized in that: this gear cluster has a sun gear that driven by this auxiliary motor, the planetary wheel that driven by this main motor that several are meshed with sun gear, an and external gear that is meshed with this planetary wheel, this external gear is to be fixedly arranged on the output frame, and this output frame is fixedly arranged on the force-output shaft of the accommodation space that is positioned at housing.

Described double motor differential transmission system is characterized in that:

Be installed with a transmission gear on the output shaft of this main motor, aforementioned main motor drives planetary support by this transmission gear, be extended with this planetary axostylus axostyle relatively on this support, and making each axostylus axostyle and corresponding planetary wheel articulate, the output shaft of this auxiliary motor then is connected directly to sun gear.

Double motor differential transmission system of the present utility model, mainly be main motor and auxiliary motor linked gear group simultaneously, and it is fast, slow and stop by the rotation of auxiliary motor, produce differential with main motor, and then the rotating speed and the torsion of the output of pinion group force-output shaft, and then reach smooth-going continuous variable speed effect, simultaneously, because of there is no the action that snaps in, throws off between gear, gear also is difficult for abrasion, and can not only increase rider's facility by the automatic feedback regulation and control of the speed of a motor vehicle of battery-driven car rotating speed because of auxiliary motor again, can guarantee that more the rotating speed of motor output and torsion are at Cui state

By above-mentioned explanation, and the utility model and prior art are done one relatively, when learning that the utility model really has advantage and effect what follows:

1 motor outputting torsion and rotating speed can be in response to changes in demand: by the double motor differential transmission system of differential regulation and control output speed with the torsion conversion, and the control that can borrow auxiliary motor, the demand change adjustment of according with one's environment of the outputting torsion that make force-output shaft and rotating speed.

2 regulation processes are smooth-going, gear is difficult for abrasion: as previously mentioned since this kind adjustment via the mechanical type interlock, throw off action, process is very smooth-going, the unlikely serious petty consumption of gear effectively increases motor service life, reduces the demand of maintenance.

3 automatic feedback controls, increase the user and regulate and control convenience: the rotating speed of regulating and control auxiliary motor with the signal feedback of the speed of a motor vehicle, so as to the output of control force-output shaft, can make the battery-driven car of selecting the utility model motor for use be easy to control, and because the slow speed of revolution during low speed reduces quick-fried impact machine meeting, the raising safety of electric vehicle, consumes energy need not improve when running at high speed, and increases endurance.

Below by Cui embodiment and accompanying drawing double motor differential transmission system of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the scheme drawing of general Electrical Bicycle.

Fig. 2 is the transmission system enlarged diagram of general Electrical Bicycle.

Fig. 3 is the running condition scheme drawing of the utility model one than Cui embodiment.

Fig. 4 is the scheme drawing of the utility model one than Cui embodiment.

Fig. 5 is the actuator state scheme drawing of the utility model one than Cui embodiment.

Fig. 6 is another scheme drawing than Cui embodiment of the utility model.

Fig. 7 is another actuator state scheme drawing than Cui embodiment of the utility model.

As Fig. 3, Fig. 4, shown in Figure 5, in the present embodiment for purposes of illustration, be that double motor differential transmission system 3 of the present utility model is installed on the Electrical Bicycle 5, in order to via chain 52,53 drive the rotation of the rear wheel 54 of Electrical Bicycle 5, this double motor differential transmission system 3 includes a tool accommodation space 311 and is installed in housing 31 on the vehicle frame 51, be arranged at main motor 33 and auxiliary motor 32 in the housing 31 respectively, one is arranged in the accommodation space 311 and is subjected to the gear cluster 34 of main motor 33 interlocks, and one end extend the outer force-output shaft 35 of housing 31, this gear cluster 34 has a sun gear 341, the planetary wheel 342 that several are meshed with sun gear 341, an and external gear 343 that is meshed with these planetary wheels 342, this external gear 343 is to be connected and fixed on the output frame 344, and these output frame 344 extensions are provided with a force-output shaft 35, then be installed with a transmission gear 332 on the output shaft 331 of main motor 33, in order to drive the support 322 of planetary wheel 342, and be extended with the axostylus axostyle 345 of these planetary wheels 342 relatively on this support 322, and making each axostylus axostyle 345 and corresponding planetary wheel 342 articulate, 321 of the output shafts of this auxiliary motor 32 are connected directly to sun gear 341.

In like manner, when auxiliary motor 32 motionless, sun gear 341 is stagnated, planetary wheel 342 is subjected to main motor 33 to activate revolution, reach again on the external gear 343, the relative planetary wheel 342 of the force-output shaft that is connected in external gear 343 is rotated in the same way, when auxiliary motor 32 and main motor 33 contrarotations, sun gear 341 and planetary wheel 342 revolution direction contrarotations, cause the promotion of planetary wheel 342 rotations subtracting revolution, external gear 343 and force-output shaft 35 rotating speeds reduce, torsion improves, on the contrary, and under another extremity, when auxiliary motor 32 rotates in the same way with main motor 33, sun gear 341 and planetary wheel 342 revolution direction contrarotations, external gear 342 is subjected to the actuating that planetary wheel 342 rotations add revolution, drives force-output shaft 35 rotating speeds and increases, torsion reduces, during actual certainly the use, also can consider the simplification of control mechanism, auxiliary motor 32 adopts from regulating and control with main motor 33 contrarotations to zero segmentation, reduces the cost that expends of control auxiliary motor 32 positive and negative two-way rotations.

When the motor applications of present embodiment on Electrical Bicycle 6, for simplifying rider's operation, can establish the sensor (not shown) of the detecting speed of a motor vehicle on this vehicle frame 61 in addition, and control the rotating of auxiliary motor 32 according to the height of the speed of a motor vehicle, to regulate and control rotating speed and the torsion that integral body is exerted oneself, whereby, meet starting, the speed of a motor vehicle such as climbing are lower, and when needing the road conditions of higher torsion, this sensor is promptly controlled auxiliary motor 32 and is backward rotation with main motor 33, and make

auxiliary motor

32 and 33 in main motor promptly produce velocity contrast, and react on the planetary wheel 342 to the gear cluster 34, make the rotating speed of force-output shaft 35 reduce the torsion lifting, on the contrary, when the speed of Electrical Bicycle 6 promoted gradually, sensor was promptly controlled auxiliary motor 32 reverse speeds and is reduced, 342 in these planetary wheels quicken revolution, when Electrical Bicycle 6 accelerates to certain speed, just stop operating according to sensor signal control auxiliary motor 32, force-output shaft 35 rotating speeds are higher, torsion more becomes to descending.

Certainly during practical application, this auxiliary motor 32 more can surmount aforementioned negative simple three sections regulation and control to zero with respect to the speed of main motor 33 rotatings, and adopt multistage or even adopt stepless and change, thereby increase the alerting ability that motor is exerted oneself; So, when Electrical Bicycle 6 startings, when the rider strengthens electric switch and increases main motor 33 rotating speeds, counter-rotating by auxiliary motor 32, need not adopt bigger main motor 33 and storage battery electric power supply, just can obtain the required high torsion of Electrical Bicycle 6 startings, but force-output shaft changes 35 speed to be lowered, guarantee Electrical Bicycle 6 unlikely quick-fried dashing, drive the starting of Electrical Bicycle 6 pulsation-frees, after this, sensor then changes turning to of auxiliary motor 32 or rotating speed according to running speed, can be fit at that time situation so as to making rotating speed that force-output shaft 35 exported and torsion, reach the Cuiization utilization of electric energy conversion again, make consumption of current reduce, increase the endurance of battery-driven car, in addition, also can provide higher moving velocity under power down mode, the Electrical Bicycle 6 that improves the utilization low-power motor runs unhappy disappearance.

For another Figure 6 and Figure 7, the type of drive of aforementioned main motor is except that seeing through the transmission gear actuating, also can adopt belt 333 to come transmission, certainly, ripe in this skill person when can understanding easily, all can be as general technologies such as chains in order to reach this transmission, in addition, by such as the alternating current generator that is installed in the battery-driven car front-wheel, the alternating current output signal of different frequency can be provided in response to running speed, again this signal arrangement is amplified,, just can comply with the demand of landform or travel conditions in order to the positive and negative rotating speed of regulation and control auxiliary motor, effectively adjust rotating speed and the torsion that motor integral body is exerted oneself, high torsion is provided when low speed, avoiding quick-fried dashes, reduce torsion during high speed with energy savings consumption, increase endurance, especially therebetween the also interlock of gearless, throw off action, smooth-going transform effect more is provided.

Claims

1 one kinds of double motor differential transmission systems, the housing that includes a tool accommodation space, be arranged at main motor and auxiliary motor in the housing respectively, one gear cluster that is arranged in the accommodation space and driven by main motor, and one end extend the outer force-output shaft of housing, it is characterized in that: this gear cluster has a sun gear that driven by this auxiliary motor, the planetary wheel that driven by this main motor that several are meshed with sun gear, an and external gear that is meshed with this planetary wheel, this external gear is to be fixedly arranged on the output frame, and this output frame is fixedly arranged on the force-output shaft of the accommodation space that is positioned at housing.

2 double motor differential transmission systems as claimed in claim 1 is characterized in that: