JP2015107040A5

JP2015107040A5 -

Info

Publication number: JP2015107040A5
Application number: JP2013249615A
Authority: JP
Filing date: 2013-12-02
Publication date: 2016-09-29
Anticipated expiration: 2033-12-02

Description

上記の目的を達成するために、請求項１に記載の発明は、
左車輪（例えば、後述の実施形態の左後輪ＬＷｒ）を駆動する第１電動機（例えば、後述の実施形態の第１電動機２Ａ）と、前記第１電動機と前記左車輪との動力伝達経路上に設けられた第１変速機（例えば、後述の実施形態の第１遊星歯車式減速機１２Ａ）と、を有する左車輪駆動装置と、右車輪（例えば、後述の実施形態の右後輪ＲＷｒ）を駆動する第２電動機（例えば、後述の実施形態の第２電動機２Ｂ）と、前記第２電動機と前記右車輪との動力伝達経路上に設けられた第２変速機（例えば、後述の実施形態の第２遊星歯車式減速機１２Ｂ）と、を有する右車輪駆動装置と、前記第１電動機と前記第２電動機とを制御する制御手段（例えば、後述の実施形態の制御システム１００）と、を備える電動車両（例えば、後述の実施形態の車両３）であって、
前記第１及び第２変速機は、それぞれ第１乃至第３回転要素を有し、
前記第１変速機の前記第１回転要素（例えば、後述の実施形態のサンギヤ２１Ａ）に前記第１電動機が接続され、
前記第２変速機の前記第１回転要素（例えば、後述の実施形態のサンギヤ２１Ｂ）に前記第２電動機が接続され、
前記第１変速機の前記第２回転要素（例えば、後述の実施形態のプラネタリキャリア２３Ａ）に前記左車輪が接続され、
前記第２変速機の前記第２回転要素（例えば、後述の実施形態のプラネタリキャリア２３Ｂ）に前記右車輪が接続され、
前記第１変速機の前記第３回転要素（例えば、後述の実施形態のリングギヤ２４Ａ）と前記第２変速機の前記第３回転要素（例えば、後述の実施形態のリングギヤ２４Ｂ）とが互いに連結され、
前記電動車両は、解放及び締結可能とされ、締結することにより前記第３回転要素の回転を規制する回転規制手段（例えば、後述の実施形態の油圧ブレーキ６０Ａ、６０Ｂ、一方向クラッチ５０）をさらに備え、
前記制御手段は、前記第３回転要素の回転状態を取得する第３回転要素回転状態取得手段（例えば、後述の実施形態のリングギヤ回転状態取得部９１、９５）と、
前記第３回転要素回転状態取得手段が、前記回転規制手段が解放されて前記第３回転要素が回転自由状態（例えば、後述の実施形態のリングフリー状態）であることを取得したときに、前記第１電動機及び前記第２電動機のトルクを所定の制限トルク（例えば、後述の実施形態の第１リングフリー制限トルク）内となるよう制御する第１制限手段（例えば、後述の実施形態の第１制限部９７）と、
前記第１制限手段と別個に設けられ、前記第１電動機及び前記第２電動機のトルクを所定の制限トルク（例えば、後述の実施形態の第２リングフリー制限トルク）内となるよう制御する第２制限手段（例えば、後述の実施形態の第２制限部９３）と、を有することを特徴とする。 In order to achieve the above object, the invention described in claim 1
On the power transmission path between the first electric motor (for example, the first electric motor 2A in the embodiment described later) that drives the left wheel (for example, the left rear wheel LWr in the embodiment described later), and the first motor and the left wheel. A left wheel drive device having a first transmission (for example, a first planetary gear speed reducer 12A in an embodiment described later) and a right wheel (for example, a right rear wheel RWr in an embodiment described later). And a second transmission (for example, an embodiment described later) provided on a power transmission path between the second motor (for example, a second motor 2B of the embodiment described later) and the second motor and the right wheel. A second planetary gear speed reducer 12B), and a right wheel drive device having control means for controlling the first electric motor and the second electric motor (for example, a control system 100 of an embodiment described later). Electric vehicle equipped (for example, in the embodiment described later A two 3),
The first and second transmissions each have first to third rotating elements,
The first electric motor is connected to the first rotating element of the first transmission (for example, a sun gear 21A in an embodiment described later),
The second electric motor is connected to the first rotating element of the second transmission (for example, a sun gear 21B in an embodiment described later),
The left wheel is connected to the second rotating element of the first transmission (for example, a planetary carrier 23A in an embodiment described later),
The right wheel is connected to the second rotating element of the second transmission (for example, a planetary carrier 23B in an embodiment described later);
The third rotation element of the first transmission (for example, a ring gear 24A in an embodiment described later) and the third rotation element of the second transmission (for example, a ring gear 24B of an embodiment described later) are connected to each other. ,
The electric vehicle can be released and engaged, and further includes rotation restricting means (for example, hydraulic brakes 60A and 60B and a one-way clutch 50 according to an embodiment described later) that restricts the rotation of the third rotating element by being engaged. Prepared,
The control means includes third rotation element rotation state acquisition means for acquiring the rotation state of the third rotation element (for example, ring gear rotation state acquisition units 91 and 95 of embodiments described later),
The third rotating element rotating state acquiring means, said rotation restricting means is released the third rotating element is rotated free state when the acquired to be a (for example, ring-free state in embodiment), the First limiting means for controlling the torque of the first electric motor and the second electric motor to be within a predetermined limiting torque (for example, the first ring-free limiting torque of the embodiment described later) (for example, the first of the embodiment described later). Restriction part 97),
A second circuit that is provided separately from the first limiting means and controls the torque of the first motor and the second motor to be within a predetermined limiting torque (for example, a second ring-free limiting torque in an embodiment described later). And limiting means (for example, a second limiting unit 93 in an embodiment described later).

Claims

左車輪を駆動する第１電動機と、前記第１電動機と前記左車輪との動力伝達経路上に設けられた第１変速機と、を有する左車輪駆動装置と、右車輪を駆動する第２電動機と、前記第２電動機と前記右車輪との動力伝達経路上に設けられた第２変速機と、を有する右車輪駆動装置と、前記第１電動機と前記第２電動機とを制御する制御手段と、を備える電動車両であって、
前記第１及び第２変速機は、それぞれ第１乃至第３回転要素を有し、
前記第１変速機の前記第１回転要素に前記第１電動機が接続され、
前記第２変速機の前記第１回転要素に前記第２電動機が接続され、
前記第１変速機の前記第２回転要素に前記左車輪が接続され、
前記第２変速機の前記第２回転要素に前記右車輪が接続され、
前記第１変速機の前記第３回転要素と前記第２変速機の前記第３回転要素とが互いに連結され、
前記電動車両は、解放及び締結可能とされ、締結することにより前記第３回転要素の回転を規制する回転規制手段をさらに備え、
前記制御手段は、前記第３回転要素の回転状態を取得する第３回転要素回転状態取得手段と、
前記第３回転要素回転状態取得手段が、前記回転規制手段が解放されて前記第３回転要素が回転自由状態であることを取得したときに、前記第１電動機及び前記第２電動機のトルクを所定の制限トルク内となるよう制御する第１制限手段と、前記第１制限手段と別個に設けられ、前記第１電動機及び前記第２電動機のトルクを所定の制限トルク内となるよう制御する第２制限手段と、を有することを特徴とする電動車両。 A left wheel drive device having a first motor that drives the left wheel, a first transmission provided on a power transmission path between the first motor and the left wheel, and a second motor that drives the right wheel And a right wheel drive device having a second transmission provided on a power transmission path between the second motor and the right wheel, and control means for controlling the first motor and the second motor. , An electric vehicle comprising:
The first and second transmissions each have first to third rotating elements,
The first electric motor is connected to the first rotating element of the first transmission;
The second electric motor is connected to the first rotating element of the second transmission;
The left wheel is connected to the second rotating element of the first transmission;
The right wheel is connected to the second rotating element of the second transmission;
The third rotating element of the first transmission and the third rotating element of the second transmission are connected to each other;
The electric vehicle can be released and fastened, and further includes a rotation restricting means for restricting the rotation of the third rotating element by being fastened,
The control means includes third rotation element rotation state acquisition means for acquiring the rotation state of the third rotation element;
Predetermined the third rotating element rotating the state acquisition means, when said rotation restricting means is released the third rotating element obtains that the rotation free state, the torque of the first electric motor and said second electric motor A first limiting means for controlling the torque of the first motor and the second motor to be within a predetermined limiting torque, and is provided separately from the first limiting means. And an electric vehicle characterized by comprising limiting means.

前記制御手段は、前記回転規制手段を解放及び締結に切り替える状態切替手段をさらに有し、
該状態切替手段は、前記電動車両の車速に相関のある車速相関量に基づいて前記回転規制手段の解放及び締結を切り替え、
前記第１制限手段は、前記車速相関量を取得する第１車速取得手段によって前記回転自由状態を取得し、
前記第２制限手段は、前記第１車速取得手段と別個に設けられ、前記車速相関量を取得する第２車速取得手段によって前記回転自由状態を取得することを特徴とする請求項１に記載の電動車両。 The control means further includes a state switching means for switching the rotation restricting means to release and fastening,
The state switching means switches between release and fastening of the rotation restricting means based on a vehicle speed correlation amount correlated with the vehicle speed of the electric vehicle,
The first limiting means acquires the rotation free state by first vehicle speed acquisition means for acquiring the vehicle speed correlation amount;
The said 2nd restriction | limiting means is provided separately from the said 1st vehicle speed acquisition means, and acquires the said rotation free state by the 2nd vehicle speed acquisition means which acquires the said vehicle speed correlation amount. Electric vehicle.

前記左車輪及び前記右車輪を、前記電動車両の前輪と後輪の何れか一方輪の左車輪及び右車輪とし、前記電動車両の前輪と後輪の他方を他方輪としたとき、
前記電動車両は、前記他方輪を駆動する他の駆動装置を備え、
前記第１車速取得手段は、前記他の駆動装置の回転状態量に基づいて前記車速相関量を取得し、
前記第２車速取得手段は、前記一方輪の回転状態量に基づいて前記車速相関量を取得することを特徴とする請求項２に記載の電動車両。 When the left wheel and the right wheel are the left wheel and the right wheel of either the front wheel or the rear wheel of the electric vehicle, and the other of the front wheel and the rear wheel of the electric vehicle is the other wheel,
The electric vehicle includes another driving device that drives the other wheel,
The first vehicle speed acquisition means acquires the vehicle speed correlation amount based on a rotation state amount of the other drive device,
The electric vehicle according to claim 2, wherein the second vehicle speed acquisition means acquires the vehicle speed correlation amount based on a rotation state amount of the one wheel.

前記第２制限手段は、前記制御手段の回路上で、信号の流れ方向において最も前記第１及び前記第２電動機に近接して配置されることを特徴とする請求項１〜３のいずれか１項に記載の電動車両。 The said 2nd restriction | limiting means is arrange | positioned closest to the said 1st and said 2nd electric motor in the flow direction of a signal on the circuit of the said control means, The any one of Claims 1-3 characterized by the above-mentioned. The electric vehicle according to Item.

前記第２制限手段は、前記第１及び第２電動機の制御信号を出力し、
前記第１制限手段は、前記第２制限手段と通信可能であって、
前記第２制限手段は、前記第２制限手段で取得した制限トルクと前記第１制限手段から送信された制限トルクとを比較し、前記第１制限手段の制限トルクと前記第２制限手段の制限トルクとが異なる場合に、小さい方の制限トルクに基づいて前記第１及び第２電動機を制御することを特徴とする請求項２又は３に記載の電動車両。 The second limiting means outputs control signals for the first and second motors,
The first limiting means can communicate with the second limiting means,
The second limiting unit compares the limiting torque acquired by the second limiting unit with the limiting torque transmitted from the first limiting unit, and limits the limiting torque of the first limiting unit and the limiting of the second limiting unit. The electric vehicle according to claim 2 or 3, wherein the first and second electric motors are controlled based on a smaller limit torque when the torque is different.

車輪と、
該車輪を駆動する駆動源と、
該駆動源を制御する制御手段と、
該駆動源と前記車輪との動力伝達経路上に、解放及び締結可能とされ前記動力伝達経路を遮断状態及び接続状態に切り替える断接手段と、を備える電動車両であって、
前記断接手段が解放されて前記動力伝達経路が遮断状態のときに、前記断接手段よりも前記駆動源側である上流側の回転状態量を取得する上流側回転状態取得手段と、
前記断接手段よりも前記車輪側である下流側の回転状態量を取得する下流側回転状態取得手段と、をさらに備え、
前記制御手段は、前記遮断状態のときに、前記下流側回転状態取得手段が取得した下流側の回転状態量のみに基づいて、前記駆動源の発生するトルクを制御することを特徴とする電動車両。 Wheels,
A drive source for driving the wheels;
Control means for controlling the drive source;
On the power transmission path between the drive source and the wheel, an electric vehicle comprising: disconnection means that can be released and fastened and switches the power transmission path between a cut-off state and a connection state;
An upstream rotation state acquisition unit that acquires an upstream rotation state amount that is on the drive source side than the connection and disconnection unit when the connection and disconnection unit is released and the power transmission path is in a disconnected state;
Further comprising a downstream rotation state acquisition means for acquiring a downstream rotation state amount that is on the wheel side of the connection / disconnection means,
The electric vehicle characterized in that the control means controls the torque generated by the drive source based only on the downstream rotational state amount acquired by the downstream rotational state acquisition means in the shut-off state. .

前記制御手段は、前記遮断状態のときに、前記下流側回転状態取得手段が取得した下流側の回転状態量のみに基づいて、前記駆動源の発生するトルクを制限することを特徴とする請求項６に記載の電動車両。 The said control means restrict | limits the torque which the said drive source generate | occur | produces based only on the downstream rotation state amount which the said downstream rotation state acquisition means acquired in the said interruption | blocking state. 6. The electric vehicle according to 6.