JPH11243608A - Motor-driven driving device for vehicle - Google Patents

Motor-driven driving device for vehicle

Info

Publication number
JPH11243608A
JPH11243608A JP4257298A JP4257298A JPH11243608A JP H11243608 A JPH11243608 A JP H11243608A JP 4257298 A JP4257298 A JP 4257298A JP 4257298 A JP4257298 A JP 4257298A JP H11243608 A JPH11243608 A JP H11243608A
Authority
JP
Japan
Prior art keywords
motor
electric motor
speed
clutch
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4257298A
Other languages
Japanese (ja)
Inventor
Kentaro Arai
健太郎 新井
Tetsuo Hamada
哲郎 浜田
Shigenobu Sekiya
重信 関谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP4257298A priority Critical patent/JPH11243608A/en
Publication of JPH11243608A publication Critical patent/JPH11243608A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/05Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
    • 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
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a shock at the time of starting to drive in a motor-driven diving device which drives an axle shaft with an electric motor via a clutch. SOLUTION: An equation of predicting the later change of the speed of revolution VR of an axle shaft is calculated based on the speed of the revolution VF and the angular acceleration dVR of an axle shaft at the time of outputting a drive command (S1). Time t required for the speed of the revolution of an electric motor Vm to become equal to the VR is calculated from this predictive equation and the speed rising characteristics of the motor (S2). The motor is made to slip during the period of the time t (S3, S4) and a clutch is engaged with the motor temporarily switched off after the time t elapsed (S5, S6). Then, the motor is restarted to increase an output torque gradually (S7).

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、電動モータにより
クラッチを介して車軸を駆動する車両用電動式駆動装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric drive device for a vehicle in which an axle is driven by an electric motor via a clutch.

【0002】[0002]

【従来の技術】従来、車両の前後輪の一方をエンジンで
駆動されるエンジン駆動輪、他方を電動式駆動装置で駆
動される電動駆動輪とし、滑り易い路面での発進時にエ
ンジン駆動輪がスリップしたとき、電動駆動輪を駆動し
て発進をアシストするようにしたハイブリッド式4輪駆
動車両が知られている。
2. Description of the Related Art Conventionally, one of front and rear wheels of a vehicle is an engine drive wheel driven by an engine, and the other is an electric drive wheel driven by an electric drive device, and the engine drive wheel slips when starting on a slippery road surface. There is known a hybrid four-wheel drive vehicle that drives an electrically driven wheel to assist starting when the vehicle is driven.

【0003】ここで、電動式駆動装置は、電動モータの
出力トルクをクラッチを介して電動駆動輪の車軸に伝達
するように構成されており、エンジン駆動輪がスリップ
して電動駆動輪の駆動指令が出されたとき、クラッチを
オンすると共に電動モータを通電作動させて、電動駆動
輪を駆動するようにしている。
Here, the electric drive device is configured to transmit the output torque of the electric motor to the axle of the electric drive wheel via a clutch, and the engine drive wheel slips to drive the drive command of the electric drive wheel. Is issued, the clutch is turned on and the electric motor is energized to drive the electric drive wheels.

【0004】[0004]

【発明が解決しようとする課題】上記従来例のもので
は、電動駆動輪の駆動当初、モータトルクの急な立上り
によるショックが発生したり、電動式駆動装置の動力伝
達系のバックラッシュや車軸回転速度とモータ回転速度
とのずれに起因したモータイナーシャ分のショックが発
生したりすることがあり、商品性上問題があった。
In the above-mentioned prior art, a shock due to a sudden rise of the motor torque occurs at the beginning of driving of the electrically driven wheels, or a backlash or axle rotation of the power transmission system of the electrically driven device. In some cases, a shock corresponding to the motor inertia due to a difference between the motor speed and the motor rotation speed may occur, and there is a problem in terms of merchantability.

【0005】本発明は、以上の点に鑑み、駆動当初のシ
ョックの発生を防止し得るようにした電動式駆動装置を
提供することを課題としている。
[0005] In view of the above, it is an object of the present invention to provide an electric drive device capable of preventing the occurrence of a shock at the beginning of driving.

【0006】[0006]

【課題を解決するための手段】上記課題を解決すべく、
電動モータによりクラッチを介して車軸を駆動する車両
用電動式駆動装置において、本発明の第1の特徴によれ
ば、車軸の駆動当初、クラッチをオンしてから電動モー
タの出力トルクを徐々に立上げるようにし、また、本発
明の第2の特徴によれば、車軸の駆動前に、電動モータ
の回転速度が車軸の回転速度に相当する速度に等しくな
るように電動モータを空転させてからクラッチをオンす
るようにしている。
Means for Solving the Problems In order to solve the above problems,
According to a first feature of the present invention, in an electric vehicle drive device for driving an axle through a clutch by an electric motor, the output torque of the electric motor is gradually raised after the clutch is turned on at the beginning of driving of the axle. According to the second feature of the present invention, the clutch is driven before the axle is driven so that the electric motor idles so that the rotation speed of the electric motor becomes equal to the rotation speed of the axle. Is turned on.

【0007】伝動系のバックラッシュが有ると、駆動当
初にバックラッシュによるガタ分だけ電動モータが無負
荷で回転して、その間の電動モータの急加速で増加した
モータイナーシャによるショックが発生するが、上記第
1の特徴によれば、電動モータの出力トルクが徐々に立
上げられるため、バックラッシュが有っても電動モータ
が急加速することはなく、バックラッシュに起因したシ
ョックの発生が防止され、当然のことながら、モータト
ルクの急な立上りによるショックの発生も防止される。
[0007] If there is a backlash in the transmission system, the electric motor rotates at no load by the amount of backlash caused by the backlash at the beginning of driving, and a shock due to increased motor inertia due to rapid acceleration of the electric motor during that time occurs. According to the first feature, since the output torque of the electric motor is gradually increased, the electric motor does not suddenly accelerate even if there is a backlash, and the occurrence of a shock due to the backlash is prevented. Needless to say, the occurrence of a shock due to a sudden rise of the motor torque is also prevented.

【0008】また、車両が静止していない状態で駆動を
開始する場合は、クラッチオン時に車軸回転速度がそれ
まで静止していた電動モータのイナーシャにより減速さ
れてショックが発生するが、上記第2の特徴によれば、
クラッチオン前の電動モータの空転でクラッチオン時の
モータイナーシャによる減速ショックの発生が防止され
る。
When the vehicle is started while the vehicle is not stationary, the axle rotation speed is reduced by the inertia of the electric motor which has been stationary when the clutch is on, causing a shock. According to the characteristics of
The occurrence of deceleration shock due to motor inertia when the clutch is on is prevented by the idling of the electric motor before the clutch is on.

【0009】[0009]

【発明の実施の形態】図1を参照して、1は左右の前
輪、2は左右の後輪であり、左右の前輪1,1をエンジ
ン3により変速機4を介して駆動されるエンジン駆動
輪、左右の後輪2,2を電動式駆動装置5により駆動さ
れる電動駆動輪とするハイブリッド式4輪駆動車両を構
成している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes left and right front wheels, 2 denotes left and right rear wheels, and engine driving in which left and right front wheels 1, 1 are driven by an engine 3 via a transmission 4. A hybrid four-wheel drive vehicle is configured in which the wheels and the left and right rear wheels 2 and 2 are electrically driven wheels driven by an electric drive device 5.

【0010】電動式駆動装置5は、左右の後輪2,2の
車軸2a,2aを連結した差動ギア6と、電動モータ7
と、電動モータ7と差動ギア6との間の動力伝達経路に
介設したドグクラッチ8とを備え、電動モータ7の出力
トルクをドグクラッチ8と差動ギア6とを介して車輪2
a,2aに伝達するように構成されている。ドグクラッ
チ8は、電動モータ7の出力軸に固定の固定ドグ8a
と、固定ドグ8aに係脱自在な可動ドグ8bと、可動ド
グ8bを固定ドグ8bに対し係脱動作させるソレノイド
8cとで構成されている。
The electric drive device 5 comprises a differential gear 6 connecting the axles 2a, 2a of the left and right rear wheels 2, 2, and an electric motor 7
And a dog clutch 8 interposed in a power transmission path between the electric motor 7 and the differential gear 6, and the output torque of the electric motor 7 is supplied to the wheel 2 via the dog clutch 8 and the differential gear 6.
a, 2a. The dog clutch 8 has a fixed dog 8 a fixed to the output shaft of the electric motor 7.
And a movable dog 8b which can be freely disengaged from the fixed dog 8a, and a solenoid 8c which makes the movable dog 8b engage and disengage with the fixed dog 8b.

【0011】電動モータ7とソレノイド8cとは、前輪
1の回転速度VFを検出する前輪速センサ9と、後輪2
の回転速度VRを検出する後輪速センサ10とからの信
号を入力するコントローラ11によって制御される。コ
ントローラ11は、前輪1がスリップして前輪速度VF
と後輪速度VRとの速度差が図2(B)に示す所定値△
VS以上になったときに後輪2の駆動指令を出して、図
2(A)に示す如き駆動制御を行う。この駆動制御で
は、先ず、駆動指令の出力時点での後輪2の回転速度V
Rと後輪2の角加速度dVRとから後輪速度VRのその
後の変化を予測する方程式を演算する(S1)。次に、
電動モータ7の起動時の速度立上り特性に基づいて、電
動モータ7の回転速度Vmが上記予測方程式で求められ
る後輪速度VRに相当する速度に等しくなるまでにかか
る時間tを演算し(S2)、この時間tだけ電動モータ
7を空転する(S3,S4)。そして、駆動指令の出力
時点から時間tが経過したところで電動モータ7への通
電を一旦停止すると共に(S5)、ソレノイド8cへの
通電で可動ドグ8bを固定ドグ8aに係合させてドグク
ラッチ8をオンする(S6)。その後、電動モータ7を
再起動してその出力トルクを徐々に立上げる(S7)。
The electric motor 7 and the solenoid 8c comprise a front wheel speed sensor 9 for detecting the rotation speed VF of the front wheel 1, and a rear wheel 2
Is controlled by a controller 11 that inputs a signal from a rear wheel speed sensor 10 that detects the rotational speed VR of the vehicle. The controller 11 determines that the front wheel 1 slips and the front wheel speed VF
The speed difference between the rear wheel speed VR and the rear wheel speed VR is a predetermined value △ shown in FIG.
When it becomes equal to or higher than VS, a drive command for the rear wheel 2 is issued to perform drive control as shown in FIG. In this drive control, first, the rotation speed V of the rear wheel 2 at the time of output of the drive command
An equation for predicting a subsequent change in the rear wheel speed VR is calculated from R and the angular acceleration dVR of the rear wheel 2 (S1). next,
Based on the speed rise characteristic at the time of starting the electric motor 7, a time t required for the rotation speed Vm of the electric motor 7 to become equal to the speed corresponding to the rear wheel speed VR obtained by the above-described prediction equation is calculated (S2). Then, the electric motor 7 idles for this time t (S3, S4). When a time t has elapsed from the output of the drive command, the energization of the electric motor 7 is temporarily stopped (S5), and the energization of the solenoid 8c causes the movable dog 8b to engage with the fixed dog 8a to engage the dog clutch 8. Turns on (S6). Thereafter, the electric motor 7 is restarted to gradually increase its output torque (S7).

【0012】これによれば、ドグクラッチ8のオン時点
において電動モータ7の回転速度は後輪速度VRに相当
する速度まで上昇しており、ドグクラッチ8のオン時に
後輪2が電動モータ7のイナーシャによる減速力を受け
ることがなく、減速ショックの発生が防止される。尚、
駆動指令の出力時点で後輪2が静止していればt=0と
なり、電動モータ7を空転せずに直ちにドグクラッチ8
がオンされる。
According to this, when the dog clutch 8 is turned on, the rotation speed of the electric motor 7 is increased to a speed corresponding to the rear wheel speed VR, and when the dog clutch 8 is turned on, the rear wheel 2 is driven by the inertia of the electric motor 7. Since no deceleration force is received, the occurrence of a deceleration shock is prevented. still,
If the rear wheel 2 is stationary at the time of output of the drive command, t = 0, and the dog clutch 8
Is turned on.

【0013】また、ドグクラッチ8のオン後の電動モー
タ7の再起動に際し、電動モータ7は車輪2aとの間の
動力伝達系のバックラッシュによるガタ分だけ無負荷で
回転し、その間に電動モータが急加速されると、ガタが
除去されて後輪2へのトルク伝達が開始される瞬間に後
輪2が急加速で増加したモータイナーシャによる加速力
を受け、加速ショックが発生する。然し、電動モータ7
の再起動に際しては、上記の如く電動モータ7の出力ト
ルクを徐々に立上げているため、バックラッシュによる
ガタ分の無負荷回転で電動モータ7が急加速されること
はなく、加速ショックの発生が防止され、その後の急加
速によるショックの発生も防止される。
When the electric motor 7 is restarted after the dog clutch 8 is turned on, the electric motor 7 rotates with no load due to backlash due to backlash of the power transmission system between the electric motor 7 and the wheel 2a. When the vehicle is suddenly accelerated, the rear wheel 2 receives an acceleration force due to the motor inertia increased by the rapid acceleration at the moment when the backlash is removed and the torque transmission to the rear wheel 2 is started, and an acceleration shock occurs. However, the electric motor 7
When the motor is restarted, since the output torque of the electric motor 7 is gradually increased as described above, the electric motor 7 is not suddenly accelerated by the no-load rotation corresponding to the backlash due to the backlash, and an acceleration shock is generated. Is prevented, and the occurrence of a shock due to sudden acceleration thereafter is also prevented.

【0014】ところで、上記実施形態では、後輪速度V
Rの変化を予測して空転時間tを算出したが、電動モー
タ7の回転速度を検出して、電動モータ7の空転により
その回転速度がその時点での後輪速度VRに相当する速
度に上昇したときにドグクラッチ8をオンすることも可
能である。然し、上記実施形態のものでは電動モータ7
用の速度センサが不要になるため、コスト的に有利であ
る。
In the above embodiment, the rear wheel speed V
Although the idling time t was calculated by predicting the change in R, the rotational speed of the electric motor 7 was detected, and the idling of the electric motor 7 increased the rotational speed to a speed corresponding to the rear wheel speed VR at that time. It is also possible to turn on the dog clutch 8 when this is done. However, in the above embodiment, the electric motor 7
This is advantageous in terms of cost because a speed sensor is not required.

【0015】以上、前輪1をエンジン駆動輪、後輪2を
電動駆動輪とするハイブリッド式4輪駆動車両に本発明
を適用した実施形態について説明したが、後輪2をエン
ジン駆動輪、前輪1を電動駆動輪とするハイブリッド式
4輪駆動車両にも同様に本発明を適用できる。
The embodiment in which the present invention is applied to a hybrid four-wheel drive vehicle in which the front wheels 1 are engine driven wheels and the rear wheels 2 are electrically driven wheels has been described. The present invention can be similarly applied to a hybrid type four-wheel drive vehicle in which is used as an electric drive wheel.

【0016】[0016]

【発明の効果】以上の説明から明らかなように、本発明
によれば、駆動当初のショックの発生を防止して商品性
を向上できる。
As is apparent from the above description, according to the present invention, it is possible to prevent the occurrence of a shock at the beginning of driving and to improve the marketability.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明装置を具備する車両の一例を示す図FIG. 1 is a diagram showing an example of a vehicle equipped with the device of the present invention.

【図2】 (A)電動式駆動装置の制御内容を示すフロ
ーチャート、(B)モータやクラッチの作動タイミング
を示すタイムチャート
FIG. 2 (A) is a flowchart showing the control contents of the electric drive device, and (B) is a time chart showing the operation timing of the motor and the clutch.

【符号の説明】[Explanation of symbols]

2a 車軸 4 電動式駆動装置 7
電動モータ 8 ドグクラッチ 11 コントローラ
2a axle 4 electric drive 7
Electric motor 8 Dog clutch 11 Controller

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 電動モータによりクラッチを介して車軸
を駆動する車両用電動式駆動装置において、車軸の駆動
当初、クラッチをオンしてから電動モータの出力トルク
を徐々に立上げることを特徴とする車両用電動式駆動装
置。
1. An electric vehicle drive system in which an axle is driven by an electric motor via a clutch, wherein at the beginning of driving of the axle, an output torque of the electric motor is gradually increased after the clutch is turned on. Electric drive for vehicles.
【請求項2】 電動モータによりクラッチを介して車軸
を駆動する車両用電動式駆動装置において、車軸の駆動
前に、電動モータの回転速度が車軸の回転速度に相当す
る速度に等しくなるように電動モータを空転させてから
クラッチをオンすることを特徴とする車両用電動式駆動
装置。
2. An electric vehicle drive system in which an axle is driven by an electric motor via a clutch. Before driving the axle, the electric motor is driven so that the rotation speed of the electric motor becomes equal to the rotation speed of the axle. An electric drive device for a vehicle, wherein a clutch is turned on after idling a motor.
JP4257298A 1998-02-24 1998-02-24 Motor-driven driving device for vehicle Pending JPH11243608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4257298A JPH11243608A (en) 1998-02-24 1998-02-24 Motor-driven driving device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4257298A JPH11243608A (en) 1998-02-24 1998-02-24 Motor-driven driving device for vehicle

Publications (1)

Publication Number Publication Date
JPH11243608A true JPH11243608A (en) 1999-09-07

Family

ID=12639791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4257298A Pending JPH11243608A (en) 1998-02-24 1998-02-24 Motor-driven driving device for vehicle

Country Status (1)

Country Link
JP (1) JPH11243608A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327547A2 (en) 2002-01-11 2003-07-16 Nissan Motor Company, Limited Apparatus and method for providing protection to electric traction motor of vehicle
EP1342610A2 (en) 2002-03-08 2003-09-10 Nissan Motor Co., Ltd. Vehicle powertrain control system and method for enhanced vehicle start-up acceleration
EP1389555A2 (en) 2002-08-13 2004-02-18 Nissan Motor Co., Ltd. Vehicle driving force control
EP1393959A3 (en) * 2002-08-26 2005-03-30 Nissan Motor Company, Limited Vehicle driving force control apparatus
US6902511B2 (en) 2002-08-27 2005-06-07 Nissan Motor, Co., Ltd. Vehicle driving force control apparatus
US6969337B2 (en) 2002-09-04 2005-11-29 Nissan Motor Co., Ltd. Vehicle driving force control apparatus
US7217223B2 (en) 2001-09-10 2007-05-15 Nissan Motor Co., Ltd. Vehicle with clutch for transmission of torque output of motor
US7234553B2 (en) 2002-08-30 2007-06-26 Nissan Motor Co., Ltd. Vehicle driving force control apparatus
JP2007223588A (en) * 2006-02-22 2007-09-06 Ford Global Technologies Llc Automobile and method for switching torque transmission path of automobile
JP2010202190A (en) * 2000-04-07 2010-09-16 Gkn Driveline Japan Ltd Power transmission device
JP2010260497A (en) * 2009-05-11 2010-11-18 Nissan Motor Co Ltd Four-wheel drive control device
FR2954254A1 (en) * 2009-12-17 2011-06-24 Peugeot Citroen Automobiles Sa METHOD AND SYSTEM FOR DISENGAGING AN ELECTRIC MACHINE ON A VEHICLE RUNNING TRAIN, IN PARTICULAR A HYBRID MOTOR VEHICLE
US20120259494A1 (en) * 2009-12-17 2012-10-11 Peugeot Citroen Automobiles Sa Method and System for Coupling an Electric Machine to a Vehicle Running Gear, Especially for a Hybrid Vehicle
JP2014051132A (en) * 2012-09-05 2014-03-20 Jtekt Corp Vehicular running gear
JP2014051998A (en) * 2012-09-05 2014-03-20 Jtekt Corp Driving apparatus for vehicle
CN109094365A (en) * 2017-06-21 2018-12-28 株式会社捷太格特 auxiliary drive device
JP2019534819A (en) * 2016-09-28 2019-12-05 ジン−ジン エレクトリック テクノロジーズ カンパニー リミテッド Electric drive assembly for vehicle

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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