CN207433245U - Pure electric coach and its dynamical system - Google Patents
Pure electric coach and its dynamical system Download PDFInfo
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- CN207433245U CN207433245U CN201721196604.3U CN201721196604U CN207433245U CN 207433245 U CN207433245 U CN 207433245U CN 201721196604 U CN201721196604 U CN 201721196604U CN 207433245 U CN207433245 U CN 207433245U
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- driving motor
- clutch
- pure electric
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- preposition
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Abstract
The utility model is related to electrical vehicular power control fields, particularly pure electric coach and its dynamical system.Wherein pure electric coach includes dynamical system, which includes the first driving motor, the second driving motor, transmission shaft, drive axle and wheel, further includes preposition clutch and postposition clutch, the preposition clutch of the first driving motor drive connection；The front transfer of second driving motor connects preposition clutch, and the rear portion drive connection postposition clutch, postposition clutch drive vehicle wheel rotation by being driven axis connection drive axle.Under corresponding control, various modes are provided to tackle corresponding operating mode, including drive pattern, braking mode and sliding mode, so as to meet the configuration of dynamical system under more multi-state, realize under various working that two motors can be in high efficiency range operation, vehicle energy consumption is reduced, improves the performance of pure electric coach, solves the problems, such as control driving motor transmission power of making rational planning under more multi-state.
Description
Technical field
The utility model is related to electric motor coach dynamic Control fields, particularly pure electric coach and its dynamical system.
Background technology
With soaring and city bus ownership the saturation of pure electric coach quantity, pure electric coach market is to city
Township is spread, and more and more pure electric coach will have city and town and country operating mode road operation concurrently at the same time, therefore, single driving electricity
The vehicle of machine driving is driven the limitation of electric system high efficiency range, it is impossible to higher work be kept to imitate under work as a hired labourer condition for the national games
Rate, vehicle energy consumption is higher, meanwhile, under the larger operating mode of driving motor torque and power demand, by single driving motor power
With the limitation of torque, the dynamic property of vehicle is also not ideal.
To solve the above-mentioned problems, the patent document for having China Patent Publication No. to be CN206067539U discloses a kind of pure
Power assembly of electric automobile, as shown in Figure 1, it include the first driving motor, the second driving motor, freewheel clutch, transmission shaft,
Drive axle and driving wheel, the first driving motor and the second driving motor therein are connected to the both ends of freewheel clutch, the
Two driving motors are by being driven axis connection drive axle, drive axle connection driving wheel.By the way that the first driving motor and second are driven
The cooperation of motor is realized that pure electric automobile accelerates or the non-firm power of climbing is respectively configured with level road cruising power, is divided into
4 operating modes are respectively low speed cruise regime, low speed climbing pattern, high speed cruise regime, temporary parking pattern so that
Vehicle rotating speed, torque obtain proportion optimizing, improve the performance of pure electric vehicle.
But in order to adapt to the full working scope under the operation of town and country, do not mention in above patent document and how to solve, such as in low speed
The problems such as dynamical system of how making rational planning under low torque, vehicle high-speed or low speed slide, vehicle high-speed or low speed damped condition.
It cannot be guaranteed that two identical driving motors are all runed in high efficiency range under full working scope, therefore the energy consumption of double drive motor can also
Enough continue to improve, the performance of pure electric vehicle has much room for improvement.
Utility model content
The purpose of this utility model is to provide pure electric coach and its dynamical system, to solve rationally to advise under more multi-state
The problem of drawing control driving motor output power.
To achieve the above object, a kind of power system for pure electric bus provided by the utility model includes：First driving electricity
Machine, the second driving motor, transmission shaft and drive axle further include preposition clutch and postposition clutch, first driving motor
The input terminal of second driving motor, the output terminal connection institute of second driving motor are connected by the preposition clutch
Postposition clutch is stated, the postposition clutch passes through drive axle described in the transmission axis connection.
It is to pass through preposition clutch as a kind of advantageous effect of power system for pure electric bus provided by the utility model
With the cooperation of postposition clutch, the first driving motor or the second driving motor is controlled to carry out power output, obtained pure electric vehicle visitor
Vehicle power output pattern so as to meet the configuration of dynamical system under more multi-state, realizes above-mentioned two motor in a variety of works
Vehicle energy consumption can be reduced in high efficiency range operation under condition, solve control driving motor of making rational planning under more multi-state
The problem of exporting power.
As a kind of improvement of power system for pure electric bus provided by the utility model, the peak of first driving motor
It is worth the peak torque that torque is less than second driving motor, the rated speed of first driving motor is driven higher than described second
The rated speed of dynamic motor.
As a kind of being further improved for power system for pure electric bus provided by the utility model, control dress is further included
It puts, control device control connects the preposition clutch, the postposition clutch, first driving motor and described the
Two driving motors.
As a kind of power system for pure electric bus provided by the utility model, it is preferred that the preposition clutch and
The postposition clutch is controlled freewheel clutch.
As a kind of power system for pure electric bus provided by the utility model, it is preferred that the control device is whole
Vehicle controller.
A kind of pure electric coach, including dynamical system, the dynamical system include the first driving motor, preposition clutch,
Postposition clutch, the second driving motor, transmission shaft and drive axle, first driving motor are connected by the preposition clutch
The input terminal of second driving motor, the output terminal of second driving motor connect the postposition clutch, the postposition
Clutch passes through drive axle described in the transmission axis connection.Advantageous effect is to improve the performance of pure electric coach.
As a kind of improvement of pure electric coach provided by the utility model, the peak torque of first driving motor is low
In the peak torque of second driving motor, the rated speed of first driving motor is higher than second driving motor
Rated speed.
As a kind of being further improved for pure electric coach provided by the utility model, the dynamical system further includes control
Device, control device control connect the preposition clutch, the postposition clutch, first driving motor and described
Second driving motor.
As a kind of pure electric coach provided by the utility model, it is preferred that the preposition clutch and the postposition
Clutch is controlled freewheel clutch.
As a kind of pure electric coach provided by the utility model, it is preferred that the control device is entire car controller.
Description of the drawings
Fig. 1 is a kind of system construction drawing of pure electric automobile power assembly of Publication No. CN206067539U；
Fig. 2 is a kind of structure diagram of power system for pure electric bus.
Specific embodiment
The utility model is described in more detail below in conjunction with the accompanying drawings.
The utility model provides a kind of pure electric coach, including a kind of power system for pure electric bus, as shown in Fig. 2, bag
The first driving motor 1, preposition clutch 2, the second driving motor 3, postposition clutch 4, transmission shaft 5, drive axle 6, wheel 7 are included
And control device, preferably control device is entire car controller 9, further includes energy storage device 8.
First driving motor 1 connects the input terminal of the second driving motor 3 by preposition clutch 2, the second driving motor
Output terminal connects transmission shaft 5 by postposition clutch 4；When postposition clutch 4 combines, the power of driving motor passes through transmission shaft
5 and drive axle 6 be transmitted to wheel 7.
Wherein, preposition clutch 2 and postposition clutch 4 can be controlled freewheel clutches, and freewheel clutch has profit
With actively, the variation of the velocity variations of driven shakiness or direction of rotation, complete the function of automatic clutch.
In addition, energy storage device 8 is powered to the first driving motor 1 and the second driving motor 3, meanwhile, when the first driving motor 1
Or second driving motor 3 can be dragged in the case of skidding by counter, motor can be generated electricity by counter drag, i.e., in motor quilt
It is counter to charge to energy storage device 8 when dragging.
First driving motor 1 of the control connection of entire car controller 9, the second driving motor 3, preposition clutch 2 and postposition clutch
Device 4, wherein, entire car controller 9 controls the power output size of motor and controls the separation and combination of clutch.
In order to tackle power demand under different operating modes, ensure that motor can be operated in high efficiency range in dynamical system, for
Power system for pure electric bus provided by the utility model, also corresponding to have control method, it is great number to take the first driving motor 1
Determine rotating speed driving motor, peak torque T1, the second driving motor 3 is low rated speed driving motor, peak torque T2, T1
<T2。
The second driving motor 3 is set to be switched to the rotary speed threshold value of the first driving motor 1 as V1, if vehicle is in a certain operation work
The torque of driving motor is T, rotating speed V during condition.
Under above-mentioned precondition, steps flow chart is as follows：
1. judge whether V is more than V1.
2. judge whether T is more than whether T1 and T is more than T2.
3. if V<V1, T<T2 controls preposition clutch separation, and control postposition clutch combines, and controls the second driving motor
Work；
If V<V1, T>T2 controls preposition clutch and postposition clutch while combines, and controls the second driving motor and the
One driving motor works together；
If V>V1, T<T1 controls preposition clutch and postposition clutch while combines, and the second driving motor of control is empty
Turn, control the first driving motor work；
If V>V1, T>T1 controls preposition clutch and postposition clutch while combines, and controls the second driving motor and the
One driving motor works together.
4. judge whether to step on the throttle pedal and whether step on brake pedal.
For example, judge whether that someone steps on the gas or stops by obtaining gas pedal or brake pedal signal generation device
Vehicle judges vehicle-state with this, when do not step on the throttle pedal and brake pedal when, vehicle sliding；When the brake pedal is applied, vehicle
Braking.
5. if vehicle low speed slide and braking, control preposition clutch separation, control postposition clutch combines；If high ski-running
Row controls postposition clutch separation；It if braking at a high speed, controls preposition clutch and postposition clutch while all combines, control the
Two driving motors dally.
Under the control of corresponding method, power system for pure electric bus provided by the utility model is real according to actual demand
Existing vehicle is run according to the operating mode under following various modes：
(1) slow-speed of revolution low torque demand operating mode：As V ＜ V1 and T ＜ T2, preposition clutch 2 separates, postposition clutch 4
With reference to the work of the second driving motor 3 drives wheel 7 to rotate by transmission shaft 5 and drive axle 6.
For example, speed is relatively low and the smaller urban traffic situation of road gradient, the second driving motor are sufficient under the road conditions
Vehicle power demand.
(2) slow-speed of revolution high torque demand operating mode：As V ＜ V1 and T ＞ T2, preposition clutch 2 and postposition clutch 4 are simultaneously
With reference to the first driving motor 1 and the second driving motor 3 connect and jointly wheel 7 driven to rotate.
For example, the road conditions of low speed climbing, the first driving motor 1 are worked at the same time with the second driving motor 3, torque superposition is full
The power demand of high torque under the foot road conditions.
(3) high rpm low torque demand operating mode：As V ＞ V1 and T ＜ T1, preposition clutch 2 and postposition clutch 4 are simultaneously
With reference to the second driving motor 3 dallies, and the first driving motor 1 driving wheel 7 rotates.
For example, vehicle traveling individually carries out power output in high-speed working condition, by the first driving motor 1, at this time road conditions compared with
Good, the intervention of the second driving motor can not obtain higher power output effect, can also cause the consumption of electric energy.
(4) high rotating speed high torque demand operating mode：As V ＞ V1 and T ＞ T1, preposition clutch 2 and postposition clutch 4 are simultaneously
With reference to the first driving motor 1 and the second driving motor 3 connect and jointly wheel 7 driven to rotate.
For example, when high speed climbing, high-speed passing, the first driving motor 1 and the second driving motor 3 work at the same time, and meet high
The demand of power and high torque.
(5) under low speed slide and the operating mode of braking：Preposition clutch 2 separates, and postposition clutch 4 combines, the second driving electricity
Machine 3 is dragged by counter, for charging to energy storage device 8.
(6) under the operating mode of high speed slide：Postposition clutch 4 separates, and vehicle sliding resistance is only vehicle self resistance.
(7) at a high speed under the operating mode of braking：Preposition clutch 2 and postposition clutch 4 are in combination with the second driving motor 3 is empty
Turn, high rated speed driving motor 1 is dragged by counter, for charging to energy storage device 8.
According to above-mentioned power system for pure electric bus, the first driving motor 1 is more biased towards driving in high-power output, second
Dynamic motor 3 is more biased towards the output in large torque.
Be presented above the utility model is related to specific embodiment, but the utility model is not limited to described reality
Apply mode.It is in the basic ideas of the utility model by setting different motors and corresponding threshold value, controls between motor
Work switching, realizes the optimization of pure electric vehicle dynamical system, does not do definitive requirement for specific control strategy, do not taking off
This is still fallen within to the change, modification, replacement and modification that embodiment carries out in the case of principle and spirit from the utility model
In the protection domain of utility model.
Claims (10)
1. a kind of power system for pure electric bus, which is characterized in that including the first driving motor, the second driving motor, transmission shaft
And drive axle, preposition clutch and postposition clutch are further included, first driving motor is connected by the preposition clutch
The input terminal of second driving motor, the output terminal of second driving motor connect the postposition clutch, the postposition
Clutch passes through drive axle described in the transmission axis connection.
2. power system for pure electric bus according to claim 1, which is characterized in that the peak value of first driving motor
Torque is less than the peak torque of second driving motor, and the rated speed of first driving motor is higher than the described second driving
The rated speed of motor.
3. power system for pure electric bus according to claim 1, which is characterized in that further include control device, the control
Device control processed connects the preposition clutch, the postposition clutch, first driving motor and the second driving electricity
Machine.
4. the power system for pure electric bus according to claim 1 or 3, which is characterized in that the preposition clutch and institute
Postposition clutch is stated as controlled freewheel clutch.
5. power system for pure electric bus according to claim 3, which is characterized in that the control device is full-vehicle control
Device.
6. a kind of pure electric coach, including dynamical system, which is characterized in that the dynamical system includes the first driving motor, preceding
Clutch, postposition clutch, the second driving motor, transmission shaft and drive axle are put, first driving motor passes through described preposition
Clutch connects the input terminal of second driving motor, and the output terminal of second driving motor connects the postposition clutch
Device, the postposition clutch pass through drive axle described in the transmission axis connection.
7. pure electric coach according to claim 6, which is characterized in that the peak torque of first driving motor is less than
The peak torque of second driving motor, the rated speed of first driving motor are higher than the volume of second driving motor
Determine rotating speed.
8. pure electric coach according to claim 6, which is characterized in that the dynamical system further includes control device, institute
It states control device control and connects the preposition clutch, the postposition clutch, first driving motor and second drive
Dynamic motor.
9. the pure electric coach according to claim 6 or 8, which is characterized in that the preposition clutch and the postposition from
Clutch is controlled freewheel clutch.
10. pure electric coach according to claim 8, which is characterized in that the control device is entire car controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721196604.3U CN207433245U (en) | 2017-09-18 | 2017-09-18 | Pure electric coach and its dynamical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721196604.3U CN207433245U (en) | 2017-09-18 | 2017-09-18 | Pure electric coach and its dynamical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207433245U true CN207433245U (en) | 2018-06-01 |
Family
ID=62302470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721196604.3U Active CN207433245U (en) | 2017-09-18 | 2017-09-18 | Pure electric coach and its dynamical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207433245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515146A (en) * | 2017-09-18 | 2019-03-26 | 郑州宇通客车股份有限公司 | A kind of pure electric coach and its dynamical system |
-
2017
- 2017-09-18 CN CN201721196604.3U patent/CN207433245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109515146A (en) * | 2017-09-18 | 2019-03-26 | 郑州宇通客车股份有限公司 | A kind of pure electric coach and its dynamical system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |