CN207274381U - A kind of high speed pure electric automobile external toothing variable ratio drive system - Google Patents

A kind of high speed pure electric automobile external toothing variable ratio drive system Download PDF

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Publication number
CN207274381U
CN207274381U CN201721207103.0U CN201721207103U CN207274381U CN 207274381 U CN207274381 U CN 207274381U CN 201721207103 U CN201721207103 U CN 201721207103U CN 207274381 U CN207274381 U CN 207274381U
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speed
gear
gearbox
velocity
electric automobile
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CN201721207103.0U
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Chinese (zh)
Inventor
李博
聂幸福
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Shaanxi Fast Gear Co Ltd
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Shaanxi Fast Gear Co Ltd
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Abstract

The utility model discloses a kind of high speed pure electric automobile external toothing variable ratio drive system, mainly includes high-speed drive gear and orthodox car gear two parts content.First by increasing a high velocity before orthodox car gearbox, increase by one group of external gear pump high-speed reduction gears before an axis, it is still a four common gear mechanical automatic speed-changing casees for the relatively slow-speed of revolution that the adjustment of rotational speed of high-speed driving motor to orthodox car gear is adapted to, after an axis.High velocity uses independent housing, bearing, lubrication and sealing.The speed of utility model high speed gear pair than it is constant be 1.4 to 3.5 between a fast ratio, the rotating speed of 4900 to 12250rpm high rotating speed driving motor can be dropped in 3500rpm, adapt to design, technique, production and the maintenance of orthodox car gearbox.

Description

A kind of high speed pure electric automobile external toothing variable ratio drive system
Technical field
Field of automobile is the utility model is related to, specifically a kind of high speed pure electric automobile external toothing speed change Transmission system.
Background technology
The drive system of pure electric automobile mainly has single motor centralization driving and distributed two kinds of the driving of more motors.It is external Pure electric automobile scheme it is more based on single-stage speed reducing, speed-regulating function demand is realized by motor completely, it is permanent to pass through motor low speed Torque and the power demand of high speed constant output characteristic covering vehicle full working scope.But domestic electric machine is poor since manufacturing technology etc. exists Away from, maximum speed is difficult to reach more than 10,000 turns, limits the horizontal lifting of dynamic property of pure electric automobile, and to the height of motor Efficiency band scope proposes the requirement of higher, therefore is difficult to obtain good dynamic property and economy using single-stage speed reducing ratio.
It is that pure electric automobile improves energy-saving effect using small moment of torsion, high rotating speed, high power density, efficient driving motor A most effective approach.Due to conventional commercial car transmission system input speed more than within 5000rpm, medium and heavy commercial car More within 3500rpm, and the rotating speed of high efficiency driving motor of pure electric automobile can be up to 15000 to 20000rpm, even Higher, it is seen then that the height that traditional commercial car transmission system can not adapt to high efficiency driving motor turns below 5000rpm and drives motor The mode of one 2 to 4 gear mechanical automatic speed-changing case driving of increase, the driving motor of high speed, high efficiency there is no batch to make at home With.
Due to current pure electric vehicle commercial car can not give full play to also the small moment of torsion of driving motor, high rotating speed, high power density, The transmission system of the advantages such as high efficiency so that the vehicle operation power consumption of electric commercial vehicle is higher at present, and operation cost is high, in driving Journey deficiency, meanwhile, drive the size of motor and weight all larger, arrangement difficulty is big, and motor cost is high.
It is that design can match the higher speed gear case of speedy carding process motor, but high to solve problem above currently existing scheme Speed transmission is compared to the increase of conventional transmission case cost, and space is small, and difficult design is big, it is desirable to which precision is high.
Utility model content
, can the utility model proposes a kind of high speed pure electric automobile external toothing variable ratio drive system to solve the problems, such as this The rotating speed of 4900 to 12250rpm high rotating speed driving motor is dropped in 3500rpm, setting for orthodox car gearbox is adapted to Meter, technique, production and maintenance.
To achieve the above object, the utility model uses following technical scheme:
A kind of high speed pure electric automobile external toothing variable ratio drive system, including gearbox high velocity and gearbox low regime; The gearbox high velocity is external gear pump reducing gear, and gearbox low regime is multi-gear gear-case;Pure electric automobile Driving motor is connected with the input terminal of gearbox high velocity, the output terminal of gearbox high velocity and the input terminal of gearbox low regime Connection, the output terminal of gearbox low regime set output flange.
The gearbox high velocity includes driving gear and driven gear, and the driving gear passes through spline and driving The output axis connection of motor, driven gear are engaged with driving gear, and driving gear outside diameter is less than driven gear outside diameter, driven gear It is connected with reducing output shaft, reducing output shaft and an axis connection of gearbox low regime.
The gearbox high velocity uses independent housing, bearing, lubrication and sealing system.
The speed of the external gear pump of the gearbox high velocity is than being 1.4~3.5.
The driving gear and driven gear use narrow gear.
The gearbox low regime is four gear mechanical gear boxes.
The utility model compared with prior art, has the following advantages:
The high speed pure electric automobile external toothing variable ratio drive system of the utility model, mainly includes high-speed drive gear With orthodox car gear two parts content.By increasing a high velocity before orthodox car gearbox, increase before an axis Add one group of external gear pump high-speed reduction gears, for can to orthodox car gear the adjustment of rotational speed of high-speed driving motor It is still a common mechanical automatic speed-changing case with the relatively slow-speed of revolution adapted to, after an axis.High velocity is using independent housing, axis Hold, lubricate and seal, the motor of high speed can be driven after carrying out reduction of speed and be passed to conventional transmission case, compared to design higher speed gear Simple in structure for case, cost is low, easy to implement.4900 to 12250rpm high rotating speed can be driven motor by utility model Rotating speed drop in 3500rpm, adapt to orthodox car gearbox design, technique, production and maintenance.As new energy vapour Kernel component on car, not only has its appearance, noise, security etc. the requirement of high standard, is used for performance It is it is required that stringenter.
Further, the external toothing reducing gear formed using big driving gear, in the case where design accuracy meets condition, It can realize quick reduction of speed, noise reduction, the effect of sealing.
Further, according to the situation of motor speed and the demand of speed changer, rational high velocity is designed, it is possible to achieve fast ratio For 1.4~3.5 reduction of speed requirement.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model;
Wherein, 1, driving motor, 2, speed changer high velocity, 3, speed changer low regime, 4, output flange, 5, driving tooth Wheel, 6, driven gear, 7, reducing output shaft, 8, one axis, 9, two axis.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of pure electric automobile variable ratio drive system using high-speed driving motor of the utility model, mainly Including 3 two parts of gearbox high velocity 2 and gearbox low regime.The driving motor 1 of pure electric automobile is passed power by spline To gearbox high velocity 2, gearbox high velocity 2 turns high-speed driving motor 1 before an axis 8 by one group of external gear pump Speed is adjusted to the scope that orthodox car gearbox 3 is adapted to, and adapts to design, technique, production and the guarantor of orthodox car gearbox Support maintenance.
Gearbox high velocity 2 is external gear pump reducing gear, and gearbox low regime 3 is automobile multi-gear gear-case;Pure electricity The driving motor 1 of electrical automobile is connected with the input terminal of gearbox high velocity 2, and the output terminal of gearbox high velocity 2 is low with gearbox The input terminal connection in fast area 3, the output terminal of gearbox low regime 3 set output flange 4.
Gearbox high velocity 2 includes driving gear 5 and driven gear 6, and the driving gear 5 passes through spline and driving electricity The output axis connection of machine 1, driven gear 6 are engaged with driving gear 5, and 5 outside diameter of driving gear is less than 6 outside diameter of driven gear, driven Gear 6 is connected with reducing output shaft 7, and reducing output shaft 7 is connected with an axis 8 of gearbox low regime 3.Adopt gearbox high velocity 2 With independent housing, bearing, lubrication and sealing system.The speed of the external gear pump of gearbox high velocity 2 is than being 1.4~3.5.Become Fast case low regime 3 is four gear mechanical automatic speed-changing casees.
Operation principle is:By increasing a high velocity before orthodox car gearbox, increase before an axis 8 outside one group and nibble Close high-speed gear reduction gearing, for the adjustment of rotational speed of high-speed driving motor to orthodox car gear be adapted to compared with The slow-speed of revolution, is still a four common gear mechanical automatic speed-changing casees after an axis 8.High velocity is using independent housing, bearing, lubrication And sealing.
The course of work is:The driving motor of pure electric automobile first by spending 1 key that power is passed to gearbox high velocity 2, Gearbox high velocity 2 is reduced rotating speed by one group of external gear pump, the adjustment of rotational speed of high-speed driving motor 1 before an axis 8 The scope being adapted to orthodox car gearbox, the gearbox low regime after an axis 8 be still a four common gear machineries from Dynamic gearbox.
In utility model the speed of the external gear pump of gearbox high velocity than it is constant be 1.4 to 3.5 between a fast ratio, The rotating speed of 4900 to 12250rpm high rotating speed driving motor can be dropped in 3500rpm, gearbox low regime afterwards is still It is a four common gear mechanical automatic speed-changing casees.
The technological means taken:1) high velocity is independently separated, is independently supported using independent fixation, bearing and independent Lubrication sealing;2) using reducing gear of the narrow external gear pump of high-precision high speed as high velocity;3) high speed shaft is introduced in exploitation Hold technology;4) the lubrication sealing technique for adapting to high speed is introduced in exploitation.
The utility model is illustrated by taking four-speed gear shift device as an example, is certainly not limited to four-speed gear shift device, five grades of six grades of speed changes Device can also design matching high velocity, during assembling, as long as between motor and speed changer, install a matched speed change Case high velocity 2.
More than, the only preferred embodiment of the utility model, is not limited only to the scope of the utility model, Fan Yiben The equivalence changes and modification that the content of utility model scope is done, all should be the technology category of the utility model.

Claims (6)

1. a kind of high speed pure electric automobile external toothing variable ratio drive system, it is characterised in that including gearbox high velocity (2) and become Fast case low regime (3);The gearbox high velocity (2) is external gear pump reducing gear, and gearbox low regime (3) are more gears Gearbox;The driving motor (1) of pure electric automobile is connected with the input terminal of gearbox high velocity (2), gearbox high velocity (2) Output terminal is connected with the input terminal of gearbox low regime (3), and the output terminal of gearbox low regime (3) sets output flange (4).
2. a kind of high speed pure electric automobile external toothing variable ratio drive system according to claim 1, it is characterised in that described Gearbox high velocity (2) include driving gear (5) and driven gear (6), driving gear (5) outside diameter is less than driven gear (6) Outside diameter, the driving gear (5) pass through the output axis connection of spline and driving motor (1), driven gear (6) and driving gear (5) engage, driven gear (6) is connected with reducing output shaft (7), reducing output shaft (7) and an axis of gearbox low regime (3) (8) connect.
3. a kind of high speed pure electric automobile external toothing variable ratio drive system according to claim 2, it is characterised in that described Driving gear (5) and driven gear (6) use narrow gear.
A kind of 4. high speed pure electric automobile external toothing variable ratio drive system according to claim 1 or 2, it is characterised in that The gearbox high velocity (2) is using independent housing, bearing, lubrication and sealing system.
5. a kind of high speed pure electric automobile external toothing variable ratio drive system according to claim 1, it is characterised in that described Gearbox high velocity (2) external gear pump speed than be 1.4~3.5.
6. a kind of high speed pure electric automobile external toothing variable ratio drive system according to claim 1, it is characterised in that described Gearbox low regime (3) for four gear mechanical gear boxes.
CN201721207103.0U 2017-09-19 2017-09-19 A kind of high speed pure electric automobile external toothing variable ratio drive system Active CN207274381U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721207103.0U CN207274381U (en) 2017-09-19 2017-09-19 A kind of high speed pure electric automobile external toothing variable ratio drive system

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Application Number Priority Date Filing Date Title
CN201721207103.0U CN207274381U (en) 2017-09-19 2017-09-19 A kind of high speed pure electric automobile external toothing variable ratio drive system

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CN207274381U true CN207274381U (en) 2018-04-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107571726A (en) * 2017-09-19 2018-01-12 陕西法士特齿轮有限责任公司 High speed pure electric automobile external toothing variable ratio drive system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107571726A (en) * 2017-09-19 2018-01-12 陕西法士特齿轮有限责任公司 High speed pure electric automobile external toothing variable ratio drive system

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