CN207809039U - Hybrid electric drive system and vehicle - Google Patents

Hybrid electric drive system and vehicle Download PDF

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Publication number
CN207809039U
CN207809039U CN201721923269.2U CN201721923269U CN207809039U CN 207809039 U CN207809039 U CN 207809039U CN 201721923269 U CN201721923269 U CN 201721923269U CN 207809039 U CN207809039 U CN 207809039U
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China
Prior art keywords
gear
motor
output shaft
engine
shaft
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CN201721923269.2U
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刘静
华煜
柴领道
张金涛
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BYD Co Ltd
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BYD Co Ltd
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    • 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
    • Y02T10/62Hybrid vehicles

Abstract

This disclosure relates to a kind of hybrid electric drive system and vehicle.The system comprises:Engine;First motor, the first motor generate electricity under the drive of the engine;Speed changer, the speed changer includes double clutch, the first gear gear set, the second gear gear set, the double clutch is located at the same side of the first gear gear set and the second gear gear set, the output shaft of the engine is connect with the input terminal of the double clutch, first output shaft of the double clutch is connected to the first gear gear set, and the second output shaft of the double clutch is connected to the second gear gear set;The output shaft of second motor, the line shaft and the engine of second motor is coaxially connected, and the speed changer is between the engine and the second motor;Output section, the output section are used to export by the first gear gear set or the power of the second gear gear set transmission to drive vehicle.

Description

Hybrid electric drive system and vehicle
Technical field
This disclosure relates to a kind of hybrid electric drive system and vehicle.
Background technology
World today's facing mankind energy shortage and environmental degradation two is challenged greatly, and orthodox car is increasingly subject to oil crisis Serious puzzlement, energy conservation and environmental protection is increasingly becoming the development topic of automobile industry.In recent years, there are two types of different dynamic source, realizations for tool The hybrid vehicle for reducing oil consumption and discharge, has obtained development and application, and put into commodity production and introduce to the market.
Hybrid electric drive system is generally made of engine, generator, motor, electrical source of power etc., engine and dynamic Power power supply provides power for vehicle jointly, this results in its structure and is usually relatively complex, and occupied space is larger, and cost is higher.
Utility model content
Purpose of this disclosure is to provide a kind of hybrid electric drive system simple in structure, which can realize engine Two gear drivings.
To achieve the goals above, the disclosure provides a kind of hybrid electric drive system, including:Engine;First motor, The first motor generates electricity under the drive of the engine;Speed changer, the speed changer include double clutch, first gear Position gear set, the second gear gear set, the double clutch are located at the first gear gear set and the second gear gear set The same side, the output shaft of the engine are connect with the input terminal of the double clutch, the first output shaft of the double clutch It is connect with the first gear gear set, the second output shaft of the double clutch is connect with the second gear gear set;The The output shaft of two motors, the line shaft and the engine of second motor is coaxially connected, and the speed changer is located at the hair Between motivation and the second motor;Output section, the output section is for exporting by the first gear gear set or the second gear tooth The power that wheel group is transmitted is to drive vehicle.
Optionally, the speed changer includes transmission output shaft, the transmission output shaft and first shift gear Group connection, the transmission output shaft connect with the second gear gear set, and the transmission output shaft is to the output section Passing power.
Optionally, the first gear gear set includes the first driving gear and the first driven gear, second gear Gear set includes the second driving gear and the second driven gear, the first output shaft of the double clutch and first driving tooth Wheel connection, the second output shaft of the double clutch connect with second driving gear, the transmission output shaft with it is described First driven gear connects, and the transmission output shaft is connect with second driven gear.
Optionally, the input terminal of the double clutch is the shell of the double clutch, the line shaft of second motor Across the shell with coaxially connected with the output shaft of the engine, the power axle key of the shell and second motor connects It connects, the second output shaft empty set of the double clutch is on first output shaft, and the first output shaft empty set is described On the line shaft of two motors.
Optionally, sealing structure is equipped between the line shaft and the shell of second motor.
Optionally, the first motor is between the engine and speed changer, the line shaft of the first motor One end is connected with the output shaft of the engine, the power of the other end of the line shaft of the first motor and second motor Axis is connected.
Optionally, the system comprises clutch, the other end of the line shaft of the first motor and second motors Line shaft by the clutch be connected.
Optionally, the clutch is integrated in the first motor.
Optionally, the output shaft of the engine is connected with the line shaft of the first motor by gear speed increasing mechanism.
Optionally, the gear speed increasing mechanism includes intermeshing first speed increasing gear and the second speed increasing gear, described The output shaft of the power axis connection of first speed increasing gear and the first motor, second speed increasing gear and the engine connects It connects, wherein the number of teeth of first speed increasing gear is less than the number of teeth of second speed increasing gear.
Optionally, the system comprises clutch, the output shaft of the engine and the line shaft of second motor are logical The clutch is crossed to be connected.
Optionally, the output shaft of the engine is connected with the first motor by tape handler.
In the disclosure, pass through the combination of double clutch and two shift gear groups, enabling by controlling double clutches Device realizes the switching of two gears, simple in structure, easy to operate.
The disclosure also provides a kind of vehicle, including hybrid electric drive system as described above.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the schematic block diagram according to the hybrid electric drive system of the first embodiment of the disclosure;
Fig. 2 is the schematic block diagram according to the hybrid electric drive system of second of embodiment of the disclosure;
Fig. 3 is a kind of sectional view of assembly method of the line shaft of double clutch and the second motor.
Specific implementation mode
The specific implementation mode of the disclosure is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched The specific implementation mode stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Fig. 1 is the schematic block diagram according to the hybrid electric drive system of the first embodiment of the disclosure.Such as Fig. 1 Shown, the hybrid electric drive system according to the first embodiment of the disclosure includes engine 1, speed changer, output section.Hair The power of motivation 1 passes to output section by speed changer, and output section exports power to drive vehicle.
Speed changer includes double clutch 4, the first gear gear set, the second gear gear set, and double clutch 4 is arranged first The same side of shift gear group and the second gear gear set.Wherein, as shown in Figure 1, double clutch 4 has input terminal, first defeated Shaft 42 and the second output shaft 43, the output shaft of engine 1 are connect with the input terminal of double clutch 4, and the first of double clutch 4 is defeated Shaft 42 is connected to the first gear gear set, and the second output shaft 43 of double clutch 4 is connected to the second gear gear set.
The input terminal of double clutch 4 can be the shell of double clutch 4, and double clutch 4 further includes two driven discs, it is double from First output shaft 42 of clutch 4 can be with one of driven disc by key connection, and the second output shaft 43 of double clutch 4 can be with Pass through key connection with another driven disc.Usually, the shell of double clutch 4 and two driven discs can be disconnected all, i.e., Input terminal is disconnected with the first output shaft 42 and the second output shaft 43.When needing to engage one of driven disc, can control Shell carries out engagement to synchronous rotary with corresponding driven disc, and driven disc drives corresponding output shaft synchronous to rotate again, i.e., defeated Enter end to be sequentially connected with one of the first output shaft 42 and the second output shaft 43, so that the power that input terminal transmits can pass through An output in first output shaft 42 and the second output shaft 43.
Particularly, the shell of double clutch 4 can also simultaneously engage with two driven discs, i.e., input terminal can also and meanwhile with First output shaft 42 and the second output shaft 43 are sequentially connected, so that the power that input terminal transmits can be defeated by first simultaneously Shaft 42 and the output of the second output shaft 43.
It should be appreciated that the specific engagement state of double clutch 4 is controlled the influence of strategy, for those skilled in the art For, can according to actually required transmission mode adaptive settings control strategy, so as to defeated in input terminal and two It is switched between the various modes such as shaft is all off and one of input terminal and two output shafts are sequentially connected.
In the disclosure, pass through the combination of double clutch 4 and two shift gear groups, enabling by controlling double clutches Device 4 realizes the switching of two gears.Specifically, when needing speed changer with the first gear input power, double clutches can be controlled The shell of device 4 is engaged with the driven disc corresponding to the first output shaft 42, to make the input terminal and the first output shaft of double clutch 4 42 are sequentially connected;When needing speed changer with the second gear input power, the shell and the second output shaft of double clutch 4 can be controlled Driven disc engagement corresponding to 43, input terminal and the second output shaft 43 to make double clutch 4 are sequentially connected.
First gear gear set include the first driving gear 5 and the first driven gear 6, the first driving gear 5 and first from Moving gear 6 can be engaged directly, can also be engaged with intermediate gear, to be sequentially connected by the intermediate gear.Second gear Position gear set includes the second driving gear 7 and the second driven gear 8, and the second driving gear 7 and the second driven gear 8 can be direct Engagement, can also engage with intermediate gear, to be sequentially connected by the intermediate gear.First gear gear set can be low Shift gear group, the second gear gear set can be high gear gear set, and but the present disclosure is not limited thereto, in other embodiment In, the first gear gear set can be high gear gear set, and the second gear gear set can be low gear gear set.
Speed changer can also include transmission output shaft 10, and the first driven gear 6 and the second driven gear 8 are installed in change On fast device output shaft 10 so that transmission output shaft 10 can be with 8 synchronous rotary of the first driven gear 6 and the second driven gear. No matter the power from the first gear gear set or the power from the second gear gear set, pass through transmission output shaft 10 Output outward.
Hybrid electric drive system further includes first motor 2 and the second motor 3.First motor 2 both can be in the band of engine 1 It generates electricity under dynamic, but also as motor to drive vehicle.Similarly, the second motor 3 can be not only used for driving vehicle, can also It generates electricity.
In the first embodiment shown in Fig. 1, as shown in figure 3, the line shaft 31 of the second motor 3 passes through double clutch For 4 shell with coaxially connected with the output shaft of engine 1, the line shaft 31 of the shell of double clutch 4 and the second motor 3 passes through key Connection, 43 empty set of the second output shaft of double clutch 4 is on the first output shaft 42, and 42 empty set of the first output shaft is in the second motor 3 Line shaft 31 on.In this way so that the more compact structure of hybrid electric drive system, axial length smaller are convenient for It is arranged on vehicle.It in this case, as shown in figure 3, can be in the shell of the line shaft 31 and double clutch 4 of the second motor 3 Sealing structure is set between body, it is ensured that 4 inner sealing of double clutch.
In the first embodiment shown in Fig. 1, first motor 2 is between engine 1 and speed changer, first motor One end of 2 line shaft is connected with the output shaft of engine 1, and the other end is connected with the line shaft 31 of the second motor 3, first motor 2 rotating speed is equal with the rotating speed of engine 1.Further, the other end of the line shaft of first motor 2 can be with the second motor 3 Line shaft 31 by clutch 11 be connected.By the way that clutch 11 is arranged so that drive first motor 2 to be sent out in engine 1 When electric, it can be detached by controlling clutch 11, speed changer and the second motor 3 are disengaged from system, to reduce load, Improve generating efficiency.In one embodiment, clutch 11 can be integrated in inside first motor 2, to reduce hybrid power The axial space of system keeps system structure more compact.
Output section is configured to for the power that speed changer exports to be transferred to the wheel of vehicle.For example, output section may include Output gear 20 and differential mechanism 21.Output gear 20 is mounted on transmission output shaft 10 and rotation synchronous with transmission output shaft 10 Turn, output gear 20 is engaged with the final gear 22 of differential mechanism 21.The function of differential mechanism 21 be when turn inside diameter traveling or On uneven road surface when driving, left and right wheels are made to be rolled with different angular speed, to ensure to make pure rolling between both sides wheel and ground Dynamic movement.Final gear 22 is provided on differential mechanism 21, final gear 22 can for example be arranged in the shell of differential mechanism 21 On.
Fig. 2 is the schematic block diagram according to second of embodiment of the disclosure.Second of embodiment and the first The difference of embodiment essentially consists in:In the second embodiment, the output shaft of the line shaft Yu engine 1 of first motor 2 It is connected by gear speed increasing mechanism, so that the rotating speed of first motor 2 is more than the rotating speed of engine 1, to make engine 1 and the One motor 2 is used for high efficiency region matching when generator, to improve generating efficiency.Specifically, on the line shaft of first motor 2 First speed increasing gear 17 is installed, the second speed increasing gear 18, the first speed increasing gear 17 and are installed on the output shaft of engine 1 Two speed increasing gears 18 engage, and the number of teeth of the first speed increasing gear 17 is less than the number of teeth of the second speed increasing gear 18.The output shaft of engine 1 It is connected with the line shaft 31 of the second motor 3 by clutch 11.In other unshowned embodiments, the output shaft of engine 1 It can also be connected with the line shaft of first motor 2 by tape handler.Specifically, tape handler may include big belt wheel, Small pulley and transmission belt, wherein the output shaft of engine 1 is connect with big belt wheel, and line shaft and the small pulley of first motor 2 connect It connects, so that the rotating speed of first motor 2 is more than the rotating speed of engine 1.
The hybrid electric drive system of the disclosure can have following operating mode;
One, 3 pure electric vehicle operating mode of the second motor.The input terminal and two output shafts for controlling double clutch 4 disconnect, engine 1 does not work with first motor 2, and the second motor 3 drives wheel by differential mechanism 21.The operating mode is mainly used at the uniform velocity or city road Situations such as face, while battery has higher electricity.The advantages of operating mode, is that the second motor 3 directly drives, transmission chain is most short, The component for participating in work is minimum, can reach highest transmission efficiency and minimum noise.
Two, bi-motor pure electric vehicle operating mode.Second motor 3 is main power source, total power output;Supplemented by first motor 2 The power source helped limits power output.One of input terminal and two output shafts of control double clutch 4 are connected.Two motors Adjust rotating speed, it is ensured that the angular speed for being transferred to transmission output shaft 10 is consistent.The operating mode is mainly used for accelerating, climbs, overtakes other vehicles, is high The larger load occasion such as speed, and the higher situation of battery capacity.The operating mode possesses better dynamic property compared to single motor driving Can, possess better economy and lower noise compared to hybrid power, the typical applications that can more protrude its advantage are The congestion road conditions of heavy grade (winding road).
Three, operating mode in parallel.Engine 1, first motor 2 and the second motor 3 drive wheel.Two motor adjustable speeds are to match Close the angular speed of transmission output shaft 10.The advantages of operating mode be three engines 1, first motor 2 and the second motor 3 simultaneously Driving, can play maximum power performance.
Four, series connection operating mode.The input terminal and two output shafts for controlling double clutch 4 disconnect, and engine 1 drives the first electricity Machine 2 generates electricity, and the second motor 3 drives wheel.
Five, the independent driving operating mode of engine 1.One of input terminal and two output shafts of control double clutch 4 are connected, and first Motor 2 and the second motor 3 do not work, and gear switching can be realized by double clutch 4.
Six, the driving of engine 1 charging operating mode.On the basis of the independent driving operating mode of engine 1, while driving first motor 2 Power generation.
Seven, braking/deceleration feedback operating mode.Second motor 3 generates electricity when the vehicle is braked.The operating mode is mainly used under vehicle Slope, braking or deceleration.When the advantages of operating mode is to slow down or brake, reach the maximization of feedback energy.
Eight, series-parallel connection operating mode.On the one hand engine 1 drives first motor 2 to generate electricity, on the other hand pass through double clutch 4 and gear Power is transferred to differential mechanism 21 to drive wheel, the second motor 3 to drive wheel by differential mechanism 21 by position gear set.Operating mode master Be used to accelerate, climb etc. larger load occasion and electricity it is few in the case of.The advantages of operating mode is can to play engine 1 Whole power, not only ensured the dynamic property of vehicle, but also power generation can be carried out at the same time, and kept the electricity of battery.
In the disclosure, by the way that double clutch 4 and two shift gear groups to be dexterously combined together, enabling obtain Obtain a kind of two-gear transmission simple in structure, easy to operate.It, can be certain since the speed changer can provide two gears The rotating speed and torque that engine 1 is adjusted in degree, improve the working efficiency of engine 1.
In the disclosure, the gear switching of speed changer realizes that double clutch 4 can allow for by double clutch 4 The disconnection process of the engaging process and another driven disc of one driven disc overlaps when shift switching, to avoid torque from transmitting Momentary interruption, ensure shift process and vehicle operation ride comfort.The synchronizer more complicated compared to mechanical structure, it is double from Clutch all has greater advantage either in terms of ride comfort or reliability.
The preferred embodiment of the disclosure is described in detail above in association with attached drawing, still, the disclosure is not limited to above-mentioned reality The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure Monotropic type, these simple variants belong to the protection domain of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the disclosure to it is various can The combination of energy no longer separately illustrates.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought equally should be considered as disclosure disclosure of that.

Claims (13)

1. a kind of hybrid electric drive system, which is characterized in that including:
Engine (1);
First motor (2), the first motor (2) generate electricity under the drive of the engine (1);
Speed changer, the speed changer include double clutch (4), the first gear gear set, the second gear gear set, double clutches Device (4) is located at the same side of the first gear gear set and the second gear gear set, the output shaft of the engine (1) and institute State input terminal (41) connection of double clutch (4), the first output shaft (42) and the first gear tooth of the double clutch (4) Wheel group connects, and the second output shaft (43) of the double clutch (4) is connect with the second gear gear set;
Second motor (3), the line shaft (31) and the output shaft of the engine (1) of second motor (3) are coaxially connected, institute Speed changer is stated between the engine (1) and the second motor (3);
Output section, the output section be used to export the power that is transmitted by the first gear gear set or the second gear gear set with Drive vehicle.
2. system according to claim 1, which is characterized in that the speed changer includes transmission output shaft (10), described Transmission output shaft (10) is connect with the first gear gear set, the transmission output shaft (10) and the second gear tooth Wheel group connects, and the transmission output shaft (10) is to the output section passing power.
3. system according to claim 2, which is characterized in that the first gear gear set includes the first driving gear (5) and the first driven gear (6), the second gear gear set include the second driving gear (7) and the second driven gear (8), The first output shaft (42) of the double clutch (4) is connect with first driving gear (5), and the of the double clutch (4) Two output shafts (43) are connect with second driving gear (7), the transmission output shaft (10) and first driven gear (6) it connects, the transmission output shaft (10) connect with second driven gear (8).
4. system according to claim 3, which is characterized in that the input terminal (41) of the double clutch (4) is described double The line shaft (31) of the shell of clutch (4), second motor (3) passes through the shell with defeated with the engine (1) Shaft is coaxially connected, and the line shaft (31) of the shell and second motor (3) is keyed, and the of the double clutch (4) Two output shafts (43) empty set is on first output shaft (42), and the first output shaft (42) empty set is in second motor (3) on line shaft (31).
5. system according to claim 4, which is characterized in that the line shaft (31) of second motor (3) and the shell Sealing structure is equipped between body.
6. system according to claim 4, which is characterized in that the first motor (2) is located at the engine (1) and becomes Between fast device, one end of the line shaft of the first motor (2) is connected with the output shaft of the engine (1), first electricity The other end of the line shaft of machine (2) is connected with the line shaft (31) of second motor (3).
7. system according to claim 6, which is characterized in that the system comprises clutch (11), the first motors (2) other end of line shaft is connected with the line shaft (31) of second motor (3) by the clutch (11).
8. system according to claim 7, which is characterized in that the clutch (11) is integrated in the first motor (2) It is interior.
9. system according to claim 4, which is characterized in that the output shaft of the engine (1) and the first motor (2) line shaft is connected by gear speed increasing mechanism.
10. system according to claim 9, which is characterized in that the gear speed increasing mechanism includes intermeshing first Speed increasing gear (17) and the second speed increasing gear (18), the line shaft of first speed increasing gear (17) and the first motor (2) Connection, the output axis connection of second speed increasing gear (18) and the engine (1), wherein first speed increasing gear (17) the number of teeth is less than the number of teeth of second speed increasing gear (18).
11. system according to claim 9, which is characterized in that the system comprises clutch (11), the engines (1) output shaft is connected with the line shaft (31) of second motor (3) by the clutch (11).
12. system according to claim 4, which is characterized in that the output shaft of the engine (1) and the first motor (2) it is connected by tape handler.
13. a kind of vehicle, which is characterized in that include the hybrid drive train according to any one of claim 1-12 System.
CN201721923269.2U 2017-12-29 2017-12-29 Hybrid electric drive system and vehicle Active CN207809039U (en)

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Application Number Priority Date Filing Date Title
CN201721923269.2U CN207809039U (en) 2017-12-29 2017-12-29 Hybrid electric drive system and vehicle

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Application Number Priority Date Filing Date Title
CN201721923269.2U CN207809039U (en) 2017-12-29 2017-12-29 Hybrid electric drive system and vehicle

Publications (1)

Publication Number Publication Date
CN207809039U true CN207809039U (en) 2018-09-04

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CN201721923269.2U Active CN207809039U (en) 2017-12-29 2017-12-29 Hybrid electric drive system and vehicle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109878349A (en) * 2018-12-29 2019-06-14 北京新能源汽车技术创新中心有限公司 Vehicle timesharing drive system
CN111319448A (en) * 2018-12-13 2020-06-23 比亚迪股份有限公司 Power driving system and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111319448A (en) * 2018-12-13 2020-06-23 比亚迪股份有限公司 Power driving system and vehicle
CN109878349A (en) * 2018-12-29 2019-06-14 北京新能源汽车技术创新中心有限公司 Vehicle timesharing drive system

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