CN111731091A - Hybrid power device and control method thereof - Google Patents

Hybrid power device and control method thereof Download PDF

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Publication number
CN111731091A
CN111731091A CN202010836249.1A CN202010836249A CN111731091A CN 111731091 A CN111731091 A CN 111731091A CN 202010836249 A CN202010836249 A CN 202010836249A CN 111731091 A CN111731091 A CN 111731091A
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China
Prior art keywords
gear
clutch
engine
controlling
planetary assembly
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Pending
Application number
CN202010836249.1A
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Chinese (zh)
Inventor
安聪慧
邵文林
赵玉婷
许正功
林霄喆
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.)
Zhejiang Geely Holding Group Co Ltd
Ningbo Shangzhongxia Automatic Transmission Co Ltd
Zhejiang Geely Power Train Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Ningbo Shangzhongxia Automatic Transmission Co Ltd
Zhejiang Geely Power Train Co Ltd
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Application filed by Zhejiang Geely Holding Group Co Ltd, Ningbo Shangzhongxia Automatic Transmission Co Ltd, Zhejiang Geely Power Train Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN202010836249.1A priority Critical patent/CN111731091A/en
Publication of CN111731091A publication Critical patent/CN111731091A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54Transmission for changing ratio
    • B60K6/547Transmission for changing ratio the transmission being a stepped gearing

Abstract

The invention discloses a hybrid power device and a control method thereof, wherein the device comprises an engine, a generator and a driving motor; a first planetary assembly, a second planetary assembly and a third planetary assembly are sequentially sleeved on a first input shaft of the engine; the engine is sequentially provided with a first clutch, a second input shaft and a second planetary assembly, the generator is sequentially connected with the first planetary assembly and the first clutch, the generator is also connected with the second input shaft through the second clutch, the second planetary assembly is connected with a third planetary assembly, the driving motor is connected with the third planetary assembly through a third clutch, the second planetary assembly controls the second planetary assembly to work through a first brake, and the third planetary assembly controls the third planetary assembly to work through a second brake.

Description

Hybrid power device and control method thereof
Technical Field
The invention relates to the technical field of vehicles, in particular to a hybrid power device and a control method thereof.
Background
As a fast-paced and efficient transportation tool in life, the number of automobiles is increased year by year in recent years, however, most of traditional automobiles use fossil fuels (such as gasoline, diesel oil and the like) to provide power for engines, and exhaust gas of the traditional automobiles causes pollution to the environment and does not meet the requirements of energy conservation and environmental protection. Therefore, it is not always slow to use new pollution-free energy (such as electric energy) to replace fossil fuel to power automobiles.
In the face of increasingly severe environmental protection pressure, conventional fuel automobiles are gradually being replaced by new energy automobiles. The large-scale market popularization of the pure electric vehicle faces the limitation of short battery endurance mileage and long charging time. Hybrid-based vehicles have become one of the practical solutions for the transition from traditional fuel vehicles to pure electric vehicles.
Under the existing situation, as a power transmission device for a hybrid vehicle which is provided with an engine and two motors and can be driven, the speed change range is narrow, the engine is caused, the motors do not work in the optimal economic area, the oil consumption of the engine is increased, the economy is poor, the power of the motors needs to be increased in addition, the torque of the motors is increased, the cost is increased and the arrangement space is insufficient, in addition, the gear shifting position is generally switched in a pure electric driving mode, the scheme of a synchronizer is utilized, the power is interrupted, and the driving experience is influenced.
In addition, the prior art is based on a series hybrid mode, so that the driving mode is single, and the potential of the motor and the engine cannot be better released.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a hybrid device and a control method thereof, which can solve the problems of a single transmission ratio and a suppressed fuel economy in the conventional vehicle.
In order to solve the technical problems, the specific technical scheme of the invention is as follows:
in one aspect, the present invention provides a hybrid power unit comprising an engine, a generator, a drive motor; a first planetary assembly, a second planetary assembly and a third planetary assembly are sequentially sleeved on a first input shaft of the engine; the engine set gradually first clutch, second input shaft with the second planet subassembly is connected, the generator connects gradually first planet subassembly with first clutch, the generator still through the second clutch with the second input shaft, the second planet subassembly with the third planet subassembly is connected, driving motor through the third clutch with the third planet subassembly is connected, the second planet subassembly with first stopper is connected, the third planet subassembly with the second stopper is connected, first stopper with the second stopper is used for control the second planet subassembly with the drive ratio of third planet subassembly. Different gear ratios of the planetary assembly can be realized by controlling the clutch and the brake, so that different gear changes can be obtained.
The second planet assembly comprises a second sun gear, a second planet carrier and a second gear ring which are connected in sequence; the second sun gear is connected with the first input shaft and the second input shaft, and the second planet carrier is connected with the first brake;
the third planet component comprises a third sun gear, a third planet carrier and a third gear ring which are connected in sequence; the third sun gear is connected with the first input shaft, the third planet carrier is connected with the second gear ring, and the third gear ring is connected with the second brake;
the transmission ratio of the second and third planetary assemblies can be changed by controlling the first and second brakes.
Further, the first planetary assembly comprises a first sun gear, a first planet carrier and a first gear ring which are connected in sequence; the first sun gear is connected with the vehicle body shell, the first planet carrier is connected with the first clutch, and the first gear ring is connected with the generator.
Furthermore, the device also comprises an output driving gear, an output driven gear, a main reduction gear, an output shaft and a differential assembly; the output driving gear is meshed with the second gear ring and the third gear ring, the output driven gear is meshed with the output driving gear, the output driven gear is connected with the main reduction gear through the output shaft, and the main reduction gear is connected with the differential mechanism assembly.
In another aspect, the invention further provides a hybrid power device control method, which is used for controlling the hybrid power device to be switched into an engine direct drive mode, a pure electric machine drive mode, a hybrid drive mode and an engine power generation mode.
Specifically, the engine direct drive mode comprises a first gear, a second gear and a third gear;
the first gear control mode is as follows: controlling the second brake to be closed, and controlling the engine to work, wherein the first gear power transmission path is as follows: the device comprises an engine, a first input shaft, a second sun gear, a second planet carrier, a second gear ring, an output driving gear, an output driven gear, a main reduction gear, a differential assembly and wheels;
the second gear control mode is as follows: controlling the first clutch and the first brake to close, wherein the second gear power transmission path is: the differential mechanism comprises an engine, a second input shaft, a second sun gear, a second planet carrier, a second gear ring, an output driving gear, an output driven gear, a main reduction gear, a differential assembly and wheels;
the third gear control mode is as follows: controlling the first clutch and the second clutch to be closed, wherein the first input shaft and the second input shaft have the same rotating speed, and the second planetary assembly and the third planetary assembly have the transmission speed ratio, wherein the third gear power transmission path is as follows: the transmission comprises an engine, a second planetary assembly, a third planetary assembly, an output driving gear, an output driven gear, a main reduction gear, a differential assembly and wheels.
Specifically, the pure motor drive mode includes a fourth gear, a fifth gear, and a sixth gear;
the fourth gear control mode is as follows: controlling the second clutch, the third clutch and the first brake to be closed, and controlling the driving motor to work, wherein the fourth gear power transmission path is as follows: the driving motor, the third clutch, the third gear ring, the output driving gear, the output driven gear, the main reduction gear, the differential assembly and the wheels;
the fifth gear control mode is as follows: controlling the first clutch and the third clutch to be closed, and controlling the driving motor to work, wherein the fifth gear power transmission path is as follows: the driving motor, the third clutch, the third gear ring, the output driving gear, the output driven gear, the main reduction gear, the differential assembly and the wheels;
the sixth gear control mode is as follows: controlling the first clutch, the second clutch and the third clutch to be closed, and controlling the driving motor to work, wherein the first input shaft and the second input shaft have the same rotating speed, the transmission speed ratio of the second planetary assembly and the third planetary assembly is as follows, and the sixth gear power transmission path is as follows: the driving mechanism comprises a driving motor, a third clutch, a third gear ring, an output driving gear, an output driven gear, a main reduction gear, a differential assembly and wheels.
Specifically, the hybrid drive mode includes a seventh gear and an eighth gear;
the seventh gear control mode is as follows: controlling the first clutch, the third clutch and the first brake to be closed, controlling the driving motor and the engine to work, and transmitting the seventh gear power output in two directions of the driving motor and the engine, coupling the seventh gear power output in the second gear ring, and transmitting the seventh gear power output to wheels through an output driving gear, an output driven gear, a main reduction gear and a differential assembly, wherein the driving motor power transmission path is as follows: driving motor, third ring gear, third planet carrier and second ring gear, engine power transmission path is: the engine, the second input shaft, the second sun gear, the second planet carrier and the second gear ring;
the eighth gear control mode is as follows: and controlling the first clutch, the second clutch and the third clutch to be closed, and controlling the driving motor and the engine to work, wherein the rotating speeds of the first input shaft and the second input shaft are the same, the transmission speed ratio of the second planetary assembly and the third planetary assembly is the same, and the eighth gear power transmission path is the same as the seventh gear transmission path.
Specifically, the engine power generation mode control mode is as follows: controlling the first clutch to be closed, controlling the engine to work to supply the generator to generate power, wherein the power transmission path in the engine power generation mode is as follows: the hybrid power system comprises an engine, a first clutch, a first planet carrier, a first gear ring and a generator.
By adopting the technical scheme, the hybrid power device and the control method thereof have the following beneficial effects:
1. according to the hybrid power device and the control method thereof, the speed ratio range is increased and the highest vehicle speed is improved through multi-gear speed change, so that the engine and the driving motor can work in the optimal working range more, and meanwhile, the dynamic property, the economical efficiency and the acceleration performance of the vehicle are improved.
2. According to the hybrid power device and the control method thereof, the first planetary assembly structure is added, so that the power generation efficiency of the engine is further improved, and the fuel economy is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a hybrid power device according to the present invention.
In the figure: 10-engine, 11-generator, 12-driving motor;
20-a first clutch, 21-a second clutch, 22-a third clutch;
30-first planetary assembly, 30 a-first sun gear, 30 b-first carrier, 30 c-first ring gear;
31-second planetary assembly, 31 a-second sun gear, 31 b-second planet carrier, 31 c-second ring gear;
32-third planet assembly, 32 a-third sun gear, 32 b-third planet carrier, 32 c-third ring gear;
41-first brake, 42-second brake;
5-a first input shaft, 6-a second input shaft, 7-an output driving gear, 8-an output driven gear, 9-a main reduction gear, 13-an output shaft and 14-a differential assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Example 1
Because the speed change range is narrower in the hybrid power system in the prior art, the engine and the motor do not work in the optimal economic area, the oil consumption of the engine is increased, the economy is poor, in addition, the power of the motor needs to be increased to improve the torque of the motor, the cost is increased, the arrangement space is insufficient, and the waste of social resources or the use experience of a driver are both adversely affected.
The embodiments described herein provide a hybrid device that can solve the above-described problems, realize a wide range of gear ratios, and further improve the dynamic performance, economical efficiency, and acceleration performance of a vehicle.
Specifically, as shown in fig. 1, the device provided by the embodiment of the present specification includes an engine 10, a generator 11, and a drive motor 12; a first planetary assembly 30, a second planetary assembly 31 and a third planetary assembly 32 are sequentially sleeved on a first input shaft 5 of the engine 10; the engine 10 sets gradually first clutch 20, second input shaft 6 with the second planet subassembly 31 is connected, generator 1 connects gradually first planet subassembly 30 with first clutch 20, generator 1 still through second clutch 21 with the second input shaft 6 is connected, second planet subassembly 31 with third planet subassembly 32 is connected, driving motor 12 through third clutch 22 with third planet subassembly 32 is connected, second planet subassembly 31 with first stopper 41 is connected, third planet subassembly 32 with second stopper 42 is connected, first stopper 41 with second stopper 42 is used for control the drive ratio of second planet subassembly 31 with third planet subassembly 32.
By arranging the second and third planetary assemblies 31 and 32 in parallel, different drive modes can be selected by the second and third clutches 21 and 22, and the control of the first and second brakes 41 and 42 can control the rotational speeds of the second and third planetary assemblies 31 and 32 to vary the gear ratio between the second and third planetary assemblies 31 and 32, thereby varying the power output.
The first planetary assembly 30 is arranged between the engine 10 and the generator 11, that is, a speed increasing structure is added between the engine 10 and the generator 11, so that the efficiency of the engine 10 driving the generator 11 to generate electricity can be improved.
In the present embodiment, the first planetary assembly 30 may include a first sun gear 30a, a first carrier 30b, and a first ring gear 30c connected in this order; different sizes and structures can be selected according to different vehicle configurations and requirements, so that different speed increasing requirements can be realized, and specifically, the first sun gear 30a is connected with a vehicle body shell, the first planet carrier 30b is connected with the first clutch 20, and the first ring gear 30c is connected with the generator 11.
In the present embodiment, the second sun gear 31a, the second planet carrier 31b, and the second ring gear 31c, which may be connected in sequence, of the second planetary assembly 31; the second sun gear 31a is connected to the first input shaft 5 and the second input shaft 6, and the second carrier 31b is connected to the first brake 41.
Accordingly, the third planetary assembly 32 may include a third sun gear 32a, a third planet carrier 32b, and a third ring gear 32c connected in series; the third sun gear 32a is connected to the first input shaft 5, the third carrier 32b is connected to the second ring gear 31c, and the third ring gear 32c is connected to the second brake 42.
The transmission of the power of the driving motor 12 and the power of the engine 10 can be realized through the planetary transmission device, and the change of the gear ratio of the two groups of planetary transmission devices can be realized by controlling the closing of the first brake 41 or the second brake 42, so that the gear ratio in a larger range is realized, more gear changes can be provided when a driver drives, and the driving experience is improved.
Since both the brake and the clutch are normally in the off state, when the first brake 41 and the second brake 42 are not operated, the two planetary gear sets, i.e., the second planetary gear set 31 and the third planetary gear set 32, can be locked to achieve a gear ratio of 1, thereby achieving a higher speed running of the vehicle.
In the embodiment of the specification, the hybrid power device further comprises an output driving gear 7, an output driven gear 8, a main reduction gear 9, an output shaft 13 and a differential assembly 14; the output driving gear 7 is meshed with the second gear ring 31c and the third gear ring 32c, the output driven gear 8 is meshed with the output driving gear 7, the output driven gear 8 is connected with the main reduction gear 9 through the output shaft 13, and the main reduction gear 9 is connected with the differential assembly 14.
On the basis of the hybrid power device provided above, the embodiment of the present specification further provides a control method of the hybrid power device, and specifically, as shown in table 1, is an operation table of the control method.
Table 1 control operation table of hybrid power device
Figure 229565DEST_PATH_IMAGE001
Note: b1-first brake, B2-second brake, C0-first clutch, C1-second clutch, C2-third clutch
As can be seen from table 1, the hybrid power device in the embodiment of the present specification can implement four operating modes, i.e., an engine direct drive mode, a pure electric drive mode, a hybrid drive mode, and an engine power generation mode.
Specifically, the engine direct drive mode comprises a first gear, a second gear and a third gear; namely, low-speed gear, medium-speed gear and high-speed gear are realized:
the first gear control mode is as follows: controlling the second brake 42 to be closed and controlling the engine 10 to work, wherein the first gear power transmission path is: the engine 10, the first input shaft 5, the second sun gear 31a, the second planet carrier 31b, the second ring gear 31c, the output driving gear 7, the output driven gear 8, the main reduction gear 9, the differential assembly 14 and the wheels;
the second gear control mode is as follows: controlling the first clutch 20 and the first brake 41 to be closed, wherein the second gear power transmission path is: the engine 10, the second input shaft 6, the second sun gear 31a, the second planet carrier 31b, the second ring gear 31c, the output driving gear 7, the output driven gear 8, the main reduction gear 9, the differential assembly 14 and the wheels;
the third gear control mode is as follows: controlling the first clutch 20 and the second clutch 21 to be closed, the first input shaft 5 and the second input shaft 6 to rotate at the same speed, and the second planetary assembly 31 and the third planetary assembly 32 to have a transmission speed ratio of 1, wherein the third gear power transmission path is: the engine 10, the second planetary assembly 31 and the third planetary assembly 32, the output driving gear 7, the output driven gear 8, the main reduction gear 9, the differential assembly 14 and the wheels.
In the embodiment of the present specification, the pure electric drive mode includes a fourth gear, a fifth gear, and a sixth gear, that is, a low-speed gear, a medium-speed gear, and a high-speed gear;
the fourth gear control mode is as follows: controlling the second clutch 21, the third clutch 22 and the first brake 41 to be closed, and controlling the driving motor 12 to work, wherein the fourth gear power transmission path is: the driving motor 12, the third clutch 22, the third gear ring 32c, the output driving gear 7, the output driven gear 8, the main reduction gear 9, the differential assembly 14 and the wheels;
the fifth gear control mode is as follows: controlling the first clutch 20 and the third clutch to be closed, and controlling the driving motor 12 to work, wherein the fifth gear power transmission path is: the driving motor 12, the third clutch 22, the third gear ring 32c, the output driving gear 7, the output driven gear 8, the main reduction gear 9, the differential assembly 14 and the wheels;
the sixth gear control mode is as follows: controlling the first clutch 20, the second clutch 21 and the third clutch 22 to be closed, controlling the driving motor 12 to work, wherein the first input shaft 5 and the second input shaft 6 have the same rotating speed, the second planetary assembly 31 and the third planetary assembly 32 have a transmission speed ratio of 1, and the sixth gear power transmission path is: the driving motor 12, the third clutch 22, the third ring gear 32c, the output driving gear 7, the output driven gear 8, the main reduction gear 9, the differential assembly 14 and the wheels.
The hybrid driving mode comprises a seventh gear and an eighth gear, namely a medium-speed gear and a high-speed gear;
the seventh gear control mode is as follows: controlling the first clutch 20, the third clutch 22 and the first brake 41 to be closed, controlling the driving motor 12 and the engine 10 to work, and controlling the seventh gear power output to be transmitted by the driving motor 12 and the engine 10 in both directions, coupled at the second gear ring 31c, and then transmitted to the wheels through the output driving gear 7, the output driven gear 8, the main reduction gear 9 and the differential assembly 14, wherein the power transmission path of the driving motor 12 is as follows: a drive motor 12, a third ring gear 32c, a third carrier 32b, and a second ring gear 31c, and the engine power transmission path is: the engine 10, the second input shaft 6, the second sun gear 31a, the second carrier 31b, and the second ring gear 31 c;
the eighth gear control mode is as follows: controlling the first clutch 20, the second clutch 21 and the third clutch 22 to be closed, controlling the driving motor 12 and the engine 10 to work, controlling the first input shaft 5 and the second input shaft 6 to have the same rotating speed, controlling the second planetary assembly 31 and the third planetary assembly 32 to have a transmission speed ratio of 1, wherein the eighth gear power transmission path is the same as the seventh gear power transmission path.
It should be noted that, in the embodiment of the present disclosure, the hybrid drive mode can also implement the ninth gear, that is, the low gear, and the specific control manner is as follows: the third clutch 22 and the second brake 42 are controlled to be closed, the driving motor 12 and the engine 10 are controlled to work, although the driving motor 12 can drive the third planetary assembly 32 to rotate, the speed ratio between the second planetary assembly 31 and the third planetary assembly 32 is reduced due to the action of the second brake 42, and in the low speed mode, the power transmission path is the same as that in the medium speed mode and the high speed mode in the hybrid driving, and only due to the difference of the speed ratio, the power transmitted to the vehicle is different, so that the vehicle speed is different.
When the generator 11 needs to be charged, the hybrid power device needs to be switched to an engine charging mode, specifically, the engine power generation mode control mode is as follows: controlling the first clutch 20 to be closed, and controlling the engine 10 to work to supply the generator 11 to generate power, wherein the power transmission path in the engine power generation mode is as follows: the engine 10, the first clutch 20, the first carrier 30b, the first ring gear 30c, and the generator 11.
On the basis of the hybrid power device and the control method thereof, the embodiment of the specification further provides a vehicle which is a hybrid power vehicle and is provided with the hybrid power device.
The hybrid power device and the control method thereof can achieve the following beneficial effects:
1) according to the hybrid power device and the control method thereof, the speed ratio range is increased and the highest vehicle speed is improved through multi-gear speed change, so that the engine and the driving motor can work in the optimal working range more, and meanwhile, the dynamic property, the economical efficiency and the acceleration performance of the vehicle are improved.
2) According to the hybrid power device and the control method thereof, the first planetary assembly structure is added, so that the power generation efficiency of the engine is further improved, and the fuel economy is improved.
While the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. .

Claims (8)

1. A hybrid device characterized by comprising an engine (10), a generator (11), a drive motor (12), a first brake (41) and a second brake (42); a first planetary assembly (30), a second planetary assembly (31) and a third planetary assembly (32) are sequentially sleeved on a first input shaft (5) of the engine (10); the engine (10) is sequentially provided with a first clutch (20), a second input shaft (6) and a second planetary assembly (31) which are connected, the generator (11) is sequentially connected with the first planetary assembly (30) and the first clutch (20), the generator (11) is further connected with the second input shaft (6) through a second clutch (21), the second planetary assembly (31) is connected with a third planetary assembly (32), the driving motor (12) is connected with the third planetary assembly (32) through a third clutch (22), the second planetary assembly (31) is connected with the first brake (41), and the third planetary assembly (32) is connected with the second brake (42);
the second planetary assembly (31) comprises a second sun gear (31 a), a second planet carrier (31 b) and a second ring gear (31 c) which are connected in sequence; the second sun gear (31 a) is connected with the first input shaft (5) and the second input shaft (6), and the second planet carrier (31 b) is connected with the first brake (41);
the third planetary assembly (32) comprises a third sun gear (32 a), a third planet carrier (32 b) and a third gear ring (32 c) which are connected in sequence; the third sun gear (32 a) is connected to the first input shaft (5), the third carrier (32 b) is connected to the second ring gear (31 c), and the third ring gear (32 c) is connected to the second brake (42);
by controlling the first brake (41) and the second brake (42), the transmission ratio of the second planetary assembly (31) and the third planetary assembly (32) can be changed.
2. Hybrid arrangement according to claim 1, characterized in that said first planetary assembly (30) comprises a first sun gear (30 a), a first planet carrier (30 b) and a first ring gear (30 c) connected in series; the first sun gear (30 a) is connected to a vehicle body housing, the first carrier (30 b) is connected to the first clutch (20), and the first ring gear (30 c) is connected to the generator (11).
3. A hybrid arrangement according to claim 2, characterized in that the arrangement further comprises an output driving gear (7), an output driven gear (8), a main reduction gear (9), an output shaft (13) and a differential assembly (14); the output driving gear (7) is meshed with the second gear ring (31 c) and the third gear ring (32 c), the output driven gear (8) is meshed with the output driving gear (7), the output driven gear (8) is connected with the main reduction gear (9) through the output shaft (13), and the main reduction gear (9) is connected with the differential assembly (14).
4. A hybrid power plant control method, characterized in that the method is used for controlling the hybrid power plant according to any one of claims 1 to 3 to switch into an engine direct drive mode, a pure electric drive mode, a hybrid drive mode, and an engine power generation mode.
5. The hybrid power unit control method according to claim 4, characterized in that the engine direct drive mode includes a first gear, a second gear, and a third gear;
the first gear control mode is as follows: controlling the second brake (42) to be closed and controlling the engine (10) to work, wherein the first gear power transmission path is as follows: the transmission comprises an engine (10), a first input shaft (5), a second sun gear (31 a), a second planet carrier (31 b), a second gear ring (31 c), an output driving gear (7), an output driven gear (8), a main reduction gear (9), a differential assembly (14) and wheels;
the second gear control mode is as follows: controlling the first clutch (20) and the first brake (41) to be closed, wherein the second gear power transmission path is: the transmission comprises an engine (10), a second input shaft (6), a second sun gear (31 a), a second planet carrier (31 b), a second gear ring (31 c), an output driving gear (7), an output driven gear (8), a main reduction gear (9), a differential assembly (14) and wheels;
the third gear control mode is as follows: controlling the first clutch (20) and the second clutch (21) to be closed, the first input shaft (5) and the second input shaft (6) have the same rotating speed, the second planetary assembly (31) and the third planetary assembly (32) have a transmission speed ratio of 1, wherein the third gear power transmission path is as follows: the planetary gear set comprises an engine (10), a second planetary assembly (31), a third planetary assembly (32), an output driving gear (7), an output driven gear (8), a main reduction gear (9), a differential assembly (14) and wheels.
6. The hybrid powertrain control method of claim 4, wherein the electric-only drive mode includes a fourth gear, a fifth gear, and a sixth gear;
the fourth gear control mode is as follows: controlling the second clutch (21), the third clutch (22) and the first brake (41) to be closed, and controlling the driving motor (12) to work, wherein the fourth gear power transmission path is as follows: the driving mechanism comprises a driving motor (12), a third clutch (22), a third gear ring (32 c), an output driving gear (7), an output driven gear (8), a main reduction gear (9), a differential assembly (14) and wheels;
the fifth gear control mode is as follows: controlling the first clutch (20) and the third clutch (22) to be closed, and controlling the driving motor (12) to work, wherein the fifth gear power transmission path is as follows: the driving mechanism comprises a driving motor (12), a third clutch (22), a third gear ring (32 c), an output driving gear (7), an output driven gear (8), a main reduction gear (9), a differential assembly (14) and wheels;
the sixth gear control mode is as follows: controlling the first clutch (20), the second clutch (21) and the third clutch (22) to be closed, controlling the driving motor (12) to work, wherein the first input shaft (5) and the second input shaft (6) have the same rotating speed, the transmission speed ratio of the second planetary assembly (31) and the third planetary assembly (32) is 1, and the sixth gear power transmission path is as follows: the driving mechanism comprises a driving motor (12), a third clutch (22), a third gear ring (32 c), an output driving gear (7), an output driven gear (8), a main reduction gear (9), a differential assembly (14) and wheels.
7. The hybrid device control method according to claim 4, characterized in that the hybrid drive mode includes a seventh gear position and an eighth gear position;
the seventh gear control mode is as follows: controlling the first clutch (20), the third clutch (22) and the first brake (41) to be closed, controlling the driving motor (12) and the engine (10) to work, and controlling the seventh-gear power output to be transmitted by the driving motor (12) and the engine (10) in two directions and coupled at the second gear ring (31 c), and then transmitting the power to wheels through an output driving gear (7), an output driven gear (8), a main reduction gear (9) and a differential assembly (14), wherein the power transmission path of the driving motor (12) is as follows: a drive motor (12), a third ring gear (32 c), a third carrier (32 b), and a second ring gear (31 c), the engine power transmission path being: an engine (10), a second input shaft (6), a second sun gear (31 a), a second carrier (31 b), and a second ring gear (31 c);
the eighth gear control mode is as follows: controlling the first clutch (20), the second clutch (21) and the third clutch (22) to be closed, controlling the driving motor (12) and the engine (10) to work, wherein the first input shaft (5) and the second input shaft (6) have the same rotating speed, the second planetary assembly (31) and the third planetary assembly (32) have a transmission speed ratio of 1, and the eighth gear power transmission path is the same as the seventh gear power transmission path.
8. The hybrid device control method according to claim 4, characterized in that the engine power generation mode control manner is: controlling the first clutch (20) to be closed, and controlling the engine (10) to work to supply the generator (11) to generate electricity, wherein the power transmission path in the engine electricity generation mode is as follows: the hybrid vehicle includes an engine (10), a first clutch (20), a first carrier (30 b), a first ring gear (30 c), and a generator (11).
CN202010836249.1A 2020-08-19 2020-08-19 Hybrid power device and control method thereof Pending CN111731091A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113002286A (en) * 2021-02-05 2021-06-22 浙江吉利控股集团有限公司 Dual-motor hybrid power transmission system and hybrid electric vehicle
CN113183745A (en) * 2021-04-27 2021-07-30 浙江吉利控股集团有限公司 Multi-mode hybrid power transmission and automobile
CN113459797A (en) * 2021-07-21 2021-10-01 义乌吉利自动变速器有限公司 Multi-speed-ratio hybrid transmission and vehicle with same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113002286A (en) * 2021-02-05 2021-06-22 浙江吉利控股集团有限公司 Dual-motor hybrid power transmission system and hybrid electric vehicle
CN113002286B (en) * 2021-02-05 2023-02-21 浙江吉利控股集团有限公司 Dual-motor hybrid power transmission system and hybrid electric vehicle
CN113183745A (en) * 2021-04-27 2021-07-30 浙江吉利控股集团有限公司 Multi-mode hybrid power transmission and automobile
CN113459797A (en) * 2021-07-21 2021-10-01 义乌吉利自动变速器有限公司 Multi-speed-ratio hybrid transmission and vehicle with same

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