JP2006022833A - Drive device for hybrid vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive device applicable to a FR type hybrid vehicle which materializes compact and efficient power circulation. <P>SOLUTION: The drive device is provided with an input end (8) connected to an engine, the first and second coupling ends (6, 12) independently connected to two motor/generator (2, 3) disposed inside and outside, and two planetary gears arranged so as to be linked between pinion gears (4b, 5a, 5b) by positioning a rotary shaft center of a sun gear (4a) on the same axis, wherein two motor/generator (2, 3) and the first and second coupling ends (6, 12) of two planetary gears (4, 5) are respectively coupled to two internal and external rotors (14, 15) forming a concentric double structure having a through hole along the rotary shaft center of the sun gear (4a). The engine and the input terminal (8) are coupled to each other through the medium of an input shaft (1) having the rotary shaft center which passes through the through hole and which is common to two internal and external rotors. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drive device suitable for being applied to a hybrid vehicle using both an engine and an electric motor, particularly an FR type vehicle.

  A hybrid vehicle is a vehicle in which an engine and an electric motor can be combined to travel with the driving force of one or both of them, and exhaust emission is reduced as compared with a conventional vehicle using the engine as a driving source. It has the advantage that it can be significantly reduced.

  This type of vehicle is provided with a drive device having a configuration in which an engine, a motor, and a generator are connected to a planetary gear mechanism, and this drive device distributes a part of the engine output to the drive of the generator. The continuously variable transmission and the output torque can be controlled by power circulation for supplying the generated power to the motor (see, for example, Patent Document 1).

JP 2000-142146 A

  By the way, since the conventional drive device has a structure in which a generator, an engine, and a drive system motor are connected to three elements of a sun gear, a planetary gear, and a ring gear that constitute a planetary gear, the planetary gear is allowed to pass therethrough. While it is difficult to increase the mechanical energy, it is necessary to increase the size of the generator and motor in order to increase the mechanical energy, and there is a problem that leads to an increase in the size and weight of the drive device. The increase in the size of the vehicle leads to a decrease in the transmission efficiency of the drive device, and particularly in an FR type hybrid vehicle that transmits the engine output to the rear wheels through the propeller shaft. .

  The present invention has been made paying attention to such a conventional problem, and proposes a small-sized drive device capable of efficiently transmitting mechanical energy suitable for application to an FR type hybrid vehicle.

  The first invention has an input end connected to the engine and first and second connecting ends individually connected to the two motor / generators located on the inner side and the outer side, and the rotational axis of the sun gear is on the same axis. Drive device comprising two planetary gears arranged in an associated arrangement between pinion gears, the first and second couplings of the two motor / generators and the two planetary gears Ends are connected by two inner and outer rotors having a concentric double arrangement having a through hole along the rotation axis of the sun gear, and the engine and the input end pass through the through hole and the two inner and outer rotors. And a hybrid vehicle drive device that is connected via an input shaft having a common rotation axis.

  In a second aspect based on the first aspect, one of the planetary gears comprises a single pinion type first planetary gear in which a sun gear and a ring gear are linked via a single pinion gear. And the other is a double pinion type second planetary gear in which a sun gear and a ring gear are linked via two internal and external pinion gears. The sun gear of the first planetary gear is a motor located outside. A first connection end connected to the generator, the pinion gear has an input end connected to the input shaft via the clutch, and a linkage end linked to the outer pinion gear of the second planetary gear, The ring gear has a connecting end connected to an output shaft having the same rotational axis as the input shaft, and the second planetary gear has either the second connecting end or the first connecting end of the sun gear. One And comprises a brake for blocking together with the inner pinion gears and rotatably driven by engagement with the ring gear.

  In a third aspect based on the first aspect, one of the planetary gears comprises a first planetary gear of a double pinion type in which a sun gear and a ring gear are linked via two internal and external pinion gears. And the other is a single pinion type second planetary gear in which the sun gear and the ring gear are linked via a single pinion gear, and the sun gear of the first planetary gear is a motor / position located inside. The ring gear has an input end connected to the input shaft via a clutch, and the inner pinion gear of the inner and outer two pinion gears is the second planetary gear. The second planetary gear further has a second connection end connected to a motor / generator whose sun gear is located on the outside, and has a linkage end linked to a pinion gear. The gear has a connecting end for connecting to an output shaft having the same rotational axis as the input shaft, and includes a brake that prevents rotation of the pinion gear together with the inner pinion gear of the first planetary gear by fastening with the pinion gear. .

In a fourth aspect based on the first aspect, one of the planetary gears comprises a first planetary gear of a single pinion type in which a sun gear and a ring gear are linked via a single pinion. One consists of a second planetary gear of the double pinion type that links the sun gear and the ring gear through two internal and external pinion gears.
The sun gear of the first planetary gear has a first connection end that is connected to a motor / generator located inside, and the pinion gear includes an input end that is connected to an input shaft via a clutch, and a second planetary gear. The ring gear has a connecting end connected to an output shaft having the same rotational axis as the input shaft, and the second planetary gear is arranged outside the sun gear. And a brake for preventing rotation of the ring gear together with the inner pinion gear by fastening with the ring gear.

  According to the first invention, the motor and the generator and the first and second connecting ends of the two planetary gears are respectively connected by the inner and outer two rotors having a concentric double arrangement, while the engine and the planet are connected. Since the input end of the gear is connected to an input shaft arranged through the through-hole of the rotor so as to be coaxial and uniaxial, the device itself can be downsized, and the engine, motor / motor / Power generator circulation can be performed efficiently.

  According to the second aspect of the present invention, the planetary gear is composed of the first planetary gear of the single pinion type and the second planetary gear of the double pinion type, the sun gear of the first planetary gear, and the motor / generator located outside. A first connection end to be connected is provided, an input end connected to the input shaft via the clutch is provided on the pinion gear, and a connection end connected to the output shaft having the same rotation axis as the input shaft is provided on the ring gear. The sun gear of the second planetary gear is provided with a second connecting end that is connected to the motor / generator located on the inside, and a brake is arranged to prevent rotational driving together with the inner pinion gear by fastening with the ring gear. Therefore, the apparatus itself can be reduced in size, and power circulation between the engine and the motor / generator can be performed efficiently.

  According to the third invention, one of the planetary gears is a first planetary gear of a double pinion type, and the other is a second planetary gear of a single pinion type, and the sun gear of the first planetary gear is used. The first connection end to be connected to the motor / generator located inside is provided, the ring gear is provided with the input end to be connected to the input shaft via the clutch, and the inner pinion gear of the inner and outer two pinion gears The second planetary gear is provided with a linkage end that is linked to the pinion gear of the second planetary gear, and the second planetary gear is provided with a second linkage end that is linked to the motor / generator located outside, and input to the ring gear. A connecting end for connecting to an output shaft having the same rotation axis as the shaft is provided, and further, the rotation of the pinion is blocked together with the inner pinion gear of the first planetary gear by fastening with the pinion gear. Is provided with the brake, a high transmission efficiency of the mechanical energy becomes possible to miniaturize the apparatus.

  According to the fourth invention, one of the planetary gears is a single-pinion type first planetary gear, and the other is a double-pinion type second planetary gear, and the sun gear of the first planetary gear is A first connection end is provided for connection to the motor / generator located on the inner side, and a pinion gear is provided with an input end connected to the input shaft via a clutch and a linkage end linked to the outer pinion gear of the second planetary gear. The ring gear is provided with a connecting end connected to an output shaft having the same rotational axis as the input shaft, while the second planetary gear has a second end connected to a motor / generator whose sun gear is located outside. And a brake that prevents the rotation of the ring gear together with the inner pinion gear by being fastened to the ring gear makes it possible to reduce the size of the device and reduce mechanical energy. Reaches efficiency is high.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 schematically shows an embodiment of a drive device according to the present invention (only the upper half is shown because it is symmetric with respect to the rotation axis p). A motor / generator located on the inner side, 3 is a motor generator located on the outer side.

  Reference numeral 4 denotes a first planetary gear of a single pinion type, and 5 denotes a second planetary gear of a double pinion type. The sun gear 4a of the first planetary gear 4 has a first connecting end 6 that is connected to the motor / generator 3 located outside. The pinion gear (which constitutes a carrier) 4b of the first planetary gear 4 has an input end 8 connected to the input shaft 1 via the clutch 7 and a linkage end 9 connected to the outer pinion 5a of the second planetary gear 5. The ring gear 4 c has a connecting end 11 that is connected to an output shaft 10 having the same rotational axis p as the input shaft 1.

  The second planetary gear 5 has a second connecting end 12 for connecting the sun gear 5b to the motor / generator 2 positioned on the inside, and a brake 13 that prevents rotational driving together with the inner pinion 5d by fastening with the ring gear 5c. Have.

  Reference numeral 14 denotes an inner rotor having a through hole, and reference numeral 15 denotes an outer rotor having a through hole and having a double arrangement concentric with the inner rotor. The motor / generators 2 and 3 and the first connecting end 6 and the second connecting end 12 of the planetary gears 4 and 5 are respectively connected to the inner rotor 14 and the outer rotor 15, and the engine input shaft 1 is connected to the inner rotor 14. It is connected to the input end 8 through the through hole.

  In the drive device having the above-described configuration, the inner rotor 14, the outer rotor 15, and the input shaft 1 are coaxial and uniaxial, which is advantageous for downsizing of the device, and the engine, the motor / generator 2, 3 can be performed efficiently.

  FIG. 2 shows an embodiment of a drive device according to the third invention of the present invention. The driving device of this example is configured to include a first planetary gear 16 of a double pinion type and a second planetary gear 17 of a single pinion type, and the sun gear 16a of the first planetary gear 16 is a motor / position located inside. The first connecting end 18 is connected to the generator 2.

  The ring gear 16b of the first planetary gear 16 has an input end 20 connected to the input shaft 1 via the clutch 19, and the inner pinion gear 16c is the second planetary gear 17 out of the inner and outer pinion gears 16c, 16d. It has a linkage end 21 linked to the pinion gear 17a.

  As for the second planetary gear 17, the sun gear 17 b has a second connection end 22 connected to the motor / generator 3 located outside, and the ring gear 17 c has the same rotational axis p as the input shaft 1. A brake 25 having a connecting end 24 connected to the output shaft 23 and preventing rotation of the pinion gear 17a together with the inner pinion gear 16c of the first planetary gear 16 by fastening with the pinion gear (constituting a carrier) 17a. Have.

  In the driving device having such a configuration, the sun gear 16a of the first planetary gear 16 and the motor / generator 2 located inside are connected to the inner rotor 14, and the sun gear 17b of the second planetary gear 17 and the outer rotor 3 are connected. The inner rotor 14, the outer rotor 15 and the input shaft 1 are coaxial and have a single shaft, so that the apparatus can be miniaturized and the power circulation between the engine and the motor / generators 2 and 3 is efficient. Can be done well.

  Next, FIG. 3 shows an embodiment of the fourth invention according to the present invention. In the drive device having this configuration, the first planetary gear 26 has a single pinion type, and the second planetary gear 27 has a double pinion type, similar to the one shown in FIG.

  The sun gear 26 a of the first planetary gear 26 has a first connecting end 28 that is connected to the motor / generator 2 located inside, and the pinion gear (constituting a carrier) 26 b is connected to the input shaft 1 via the clutch 29. The ring gear 26c is connected to an output shaft 32 having the same rotational axis p as the input shaft 1 and a linkage end 31 linked to the outer pinion gear 27a of the second planetary gear 27. Have

  The second planetary gear 27 has a second connecting end 34 for connecting the sun gear 27b to the motor / generator 3 positioned on the outside, and the rotation of the ring gear 27c is coupled to the inner pinion gear by fastening with the ring gear 27c. It has a brake 35 that blocks with 27d.

  In the drive device having such a configuration, the sun gear 26a of the first planetary gear 26 and the motor / generator 2 located inside are connected to the inner rotor 14 and the motor located outside the sun gear 27b of the second planetary gear 27. The generator 3 is connected to the outer rotor 15, and the inner rotor 14, the outer rotor 15 and the input shaft 1 are coaxial and uniaxial, and the apparatus can be downsized. Power circulation between the engine and the motor / generators 2 and 3 can be performed efficiently.

  The device can be made compact, and a drive device suitable for application to an FR type vehicle that can efficiently perform power circulation of the engine and the motor / generator can be provided.

It is the figure which showed embodiment of the drive device according to 1st invention, 2nd invention. It is the figure which showed embodiment of the drive device according to 3rd invention. It is the figure which showed embodiment of the drive device according to 4th invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Input shaft 2 Motor / generator 3 located inside Motor / generator 4 located outside 1st planetary gear 4a Sun gear 4b Pinion gear 4c Ring gear 5 Second planetary gear 5a Outer pinion gear 5b Sun gear 5c Ring gear 5d Inner pinion gear 6 First connecting end 7 Clutch 8 Input end 9 Linking end 10 Output shaft 11 Connecting end 12 Second connecting end 13 Brake 14 Inner rotor 15 Outer rotor 16 First planetary gear 16a Sun gear 16b Ring gear 16c Inner pinion gear 16d Outside Pinion gear 17 Second planetary gear 17a Pinion gear 17b Sun gear 17c Ring gear 18 Link end 19 Clutch 20 Input end 21 Link end 22 Link end 23 Output shaft 24 Link end 25 Brake 26 First planetary gear 26a Sun gear 26b Pinion gear 26c Ring gear 27 Second play Gear 27a outside pinion gears 27b sun 27c ring gear 28 connection end 29 clutch 30 input 31 linked end 32 an output end 33 connecting end 34 connecting end 35 Brake

Claims (4)

It has an input end connected to the input shaft of the engine and first and second connecting ends individually connected to the two motor / generators located inside and outside, and the rotational axis of each sun gear is on the same axis A drive device comprising two planetary gears in an array linked between the pinion gears,
The first and second connecting ends of the two motor / generators and the two planetary gears are respectively connected by two inner and outer rotors having concentric double arrangements having through holes along the rotation axis of each sun gear. And
A hybrid vehicle drive device, wherein the engine and the input end are connected through an input shaft that passes through the through-hole and has a rotation axis common to the two inner and outer rotors. 2. The planetary gear according to claim 1, wherein one of the planetary gears includes a single planetary first planetary gear that links the sun gear and the ring gear via a single pinion, and the other includes the sun gear and the ring gear. It consists of a second planetary gear in the form of a double pinion linked via two internal and external pinions.
The sun gear of the first planetary gear has a first connection end connected to a motor / generator located on the outside, and the pinion gear includes an input end connected to an input shaft via a clutch, and a second planetary gear. The ring gear has a connecting end connected to an output shaft having the same rotational axis as the input shaft;
The second planetary gear has a second connecting end for connecting the sun gear to a motor / generator located on the inner side, and has a brake for preventing rotational driving together with the inner pinion gear by fastening with the ring gear. A hybrid vehicle drive device. 2. The planetary gear according to claim 1, wherein one of the planetary gears includes a first planetary gear of a double pinion type in which a sun gear and a ring gear are linked via two internal and external pinion gears, and the other is a sun gear and a ring gear. Consists of a single pinion type second planetary gear linked through a single pinion,
The sun gear of the first planetary gear has a first connection end that is connected to a motor / generator located inside, and the ring gear has an input end that is connected to an input shaft via a clutch, Of the two pinion gears, the inner pinion gear has a linkage end linked to the pinion gear of the second planetary gear,
The second planetary gear has a second connecting end for connecting the sun gear to a motor / generator located outside, and a connecting end for connecting the ring gear to an output shaft having the same rotational axis as the input shaft. And a brake for blocking rotation of the pinion gear together with the inner pinion gear of the first planetary gear by fastening with the pinion gear. 2. The planetary gear according to claim 1, wherein one of the planetary gears is a first planetary gear of a single pinion type that links a sun gear and a ring gear via a single pinion gear, and the other is a sun gear and a ring gear. Consists of a second planetary gear of the double pinion type that is linked via two pinion gears inside and outside,
The sun gear of the first planetary gear has a first connection end that is connected to a motor / generator located inside, and the pinion gear includes an input end that is connected to an input shaft via a clutch, and a second planetary gear. The ring gear has a connecting end connected to an output shaft having the same rotational axis as the input shaft;
The second planetary gear has a second connecting end for connecting the sun gear to a motor / generator located on the outside, and a brake that prevents the rotation of the ring gear together with the inner pinion gear by fastening with the ring gear. A drive device for a hybrid vehicle, comprising:

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