CN117863863B - Single-motor hybrid power transmission device, transmission method and vehicle - Google Patents
Single-motor hybrid power transmission device, transmission method and vehicleInfo
- Publication number
- CN117863863B CN117863863B CN202311668994.XA CN202311668994A CN117863863B CN 117863863 B CN117863863 B CN 117863863B CN 202311668994 A CN202311668994 A CN 202311668994A CN 117863863 B CN117863863 B CN 117863863B
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- Prior art keywords
- gear
- clutch
- motor
- power
- brake
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines 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
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines 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 combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines 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 motors or the generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention provides a single-motor hybrid power transmission device, a transmission method and a vehicle, wherein the structure of the single-motor hybrid power transmission device comprises an engine; the clutch device comprises a motor, a braking component, a clutch component, a first planet row and a second planet row, wherein the first planet row comprises a first sun gear, a first planet carrier, a first planet wheel and a first outer gear ring, the first sun gear is connected with the motor and the clutch component, the first planet carrier is connected with the motor, the first outer gear ring is connected with the braking component, the second planet row is coaxially arranged with the first planet row and comprises a second sun gear, a second planet carrier, a second planet wheel and a second outer gear ring, the second planet carrier is connected with the clutch component and the braking component, the second sun gear is rigidly connected with the first outer gear ring, and the second outer gear ring is rigidly connected with the first planet carrier. The single-motor hybrid power transmission device, the transmission method and the vehicle can solve the problems of single hybrid mode, single gear and low space utilization rate of the existing hybrid power transmission structure.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a single-motor hybrid power transmission device, a transmission method and a vehicle.
Background
With the continuous improvement of people's awareness of energy saving and emission reduction, conventional power automobiles are difficult to meet the demands of people due to the structural limitation, hybrid power automobiles are taken as a novel automobile power type, and the technology and the market of the hybrid power automobiles are in a vigorous development stage, wherein the driving device of the hybrid power automobiles occupies extremely important positions.
The current hybrid power transmission is limited by a structure, has a single structure, is high in motor level requirement and difficult to control by means of motors in speed and load capacity adjustment, has a single hybrid mode and a single gear, is low in comprehensive fuel saving rate, and is high in comprehensive cost. The energy recovery mode is deficient, which is unfavorable for the reutilization of energy. The existing hybrid power driving system and hybrid power automobile generally adopt a mode of stacking a plurality of parallel shafts, and each part is an independent device, so that the configuration and the space utilization rate cannot be greatly improved.
Disclosure of Invention
In view of the above, the present application is directed to a single-motor hybrid power transmission device, a transmission method and a vehicle, which are used for solving the problems of single hybrid mode, single gear and low space utilization of the conventional hybrid power transmission structure.
According to a first aspect of the present invention, there is provided a single-motor hybrid transmission device, wherein the single-motor hybrid transmission device includes an engine, a motor, a brake member, a clutch member connected to an output shaft for driving wheels, a first planetary row including a first sun gear, a first carrier, a first planetary gear, and a first outer ring gear, the first sun gear being connected to the engine, the first sun gear being connected to the clutch member, the first carrier being connected to the motor, the first outer ring gear being connected to the brake member, and a second planetary row coaxially provided with the first planetary row, the second planetary row including a second sun gear, a second carrier, a second planetary gear, and a second outer ring gear, the second carrier being connected to the clutch member, the second sun gear being rigidly connected to the first outer ring gear, and the second outer ring gear being rigidly connected to the first carrier.
Preferably, the brake member includes a first brake and a second brake provided independently of each other, the first brake being connected to the first external gear, and the second brake being connected to the second carrier.
Preferably, the clutch component comprises a first clutch and a second clutch, the first clutch is arranged in parallel with the second clutch, the first clutch is connected with the first sun gear, and the second clutch is connected with the second planet carrier.
Preferably, the single-motor hybrid power transmission device further comprises a first intermediate shaft connected with the first sun gear, a second intermediate shaft connected with the second planet carrier, the second intermediate shaft connected with the second brake and the second clutch, a third intermediate shaft connected with the first clutch, the third intermediate shaft connected with the first intermediate shaft, the first planet row arranged between the first intermediate shaft and the third intermediate shaft, the first sun gear connected with the third intermediate shaft, and an input shaft, the input end of which is connected with the engine through a coupler, and the output end of the input shaft is connected with the first intermediate shaft through a one-way clutch.
According to a second aspect of the present invention, there is provided a transmission method of a single-motor hybrid transmission device, wherein the single-motor hybrid transmission device is the single-motor hybrid transmission device described above, the transmission method of the single-motor hybrid transmission device including transmitting a plurality of gear positions by engaging the first clutch and the second clutch or engaging one of the first clutch and the second clutch in cooperation with one of the first brake and the second brake.
Preferably, the plurality of gear positions includes a first gear position in which the second clutch and the first brake are engaged, a second gear position in which the first clutch and the second clutch are engaged, a third gear position in which the first clutch and the first brake are engaged, and a fourth gear position in which the first clutch and the second brake are engaged.
Preferably, when the single-motor hybrid power transmission device is in the first gear, the power of the motor is transmitted to the second external gear ring through the first planet carrier, the first brake limits the second sun gear to move, the second external gear ring drives the second planet gear to rotate and drives the second planet carrier to rotate, so that the power is transmitted to the second clutch through the second intermediate shaft and finally transmitted to the output shaft to drive the wheels to rotate.
Preferably, when the single-motor hybrid power transmission device is in the second gear, the power of the motor is split through the first carrier, a part of the power is transmitted to the first clutch through the first planetary gear, another part of the power is transmitted to the second clutch through the second planetary gear, and the part of the power and the another part of the power are finally transmitted to the output shaft to drive the wheels to rotate.
Preferably, when the single-motor hybrid power transmission device is in the third gear, the power of the motor is transmitted to the first planet carrier, the first brake limits the first outer gear to move, the first planet carrier drives the first planet wheel to rotate and drives the first sun wheel to rotate, so that the power is transmitted to the first clutch through the third intermediate shaft and finally transmitted to the output shaft to drive the wheels to rotate.
Preferably, when the single-motor hybrid power transmission device is in the fourth gear, the second brake limits the second intermediate shaft and the second planet carrier to move, power of the motor is transmitted to the second external gear ring through the first planet carrier, the second external gear ring drives the second planet gear to rotate and drives the second sun gear to rotate, the first external gear ring is rigidly connected with the second sun gear, power of the motor drives the first planet carrier to rotate, the first planet carrier drives the first planet gear to rotate and drives the first sun gear to rotate, and power is transmitted to the first clutch through the third intermediate shaft and finally transmitted to the output shaft to drive the wheels to rotate.
Preferably, the transmission method of the single-motor hybrid transmission device includes starting the engine with the single-motor hybrid transmission device in the first gear, the second gear, the third gear or the fourth gear, placing the single-motor hybrid transmission device in a parallel mode, and finally transmitting the power of the engine to the first sun gear and/or the third intermediate shaft through the coupler, the input shaft, the one-way clutch and the first intermediate shaft.
Preferably, the transmission method of the single-motor hybrid transmission device includes that when the single-motor hybrid transmission device is in the first gear, the second gear, the third gear, the fourth gear or the parallel mode, a driver of the vehicle depresses a brake plate to enable the single-motor hybrid transmission device to start an energy recovery mode, the motor is changed from a driving mode to a generating mode, a power source of the motor is cut off and excited, and kinetic energy of the vehicle is converted into electric energy via the motor to flow to a power battery.
Preferably, the transmission method of the single-motor hybrid power transmission device comprises the steps of combining the first brake when the vehicle is in a parking or parking state, enabling the single-motor hybrid power transmission device to be in a parking power generation mode, enabling the motor to be excited, enabling power of the engine to be transmitted to the first sun gear through the coupler, the input shaft and the first intermediate shaft, enabling the first brake to limit the movement of the first outer gear, enabling the first sun gear to drive the first planet gears to rotate and drive the first planet carriers to rotate, and finally driving the motor to rotate so as to achieve parking power generation.
According to a third aspect of the present invention, there is provided a vehicle, wherein the vehicle includes the single-motor hybrid transmission device as described above.
The single-motor hybrid power transmission device, the transmission method and the vehicle provided by the embodiment of the invention are provided with only one motor and one engine, and can realize various gear positions and various mode working conditions by transmitting through two planetary rows, and the transmission relation between the first planetary row and the second planetary row is established by rigidly connecting the first outer gear ring of the first planetary row with the second sun gear of the second planetary row and rigidly connecting the second outer gear ring of the second planetary row with the first planet carrier of the first planetary row, so that the transmission mode of various transmission ratios is realized, and the first planetary row and the second planetary row are coaxially arranged, so that the space and configuration utilization ratio can be provided, and the problems of single hybrid mode, single gear position and low space utilization ratio of the traditional hybrid power transmission structure can be effectively solved.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a single motor hybrid power transmission device according to the present invention.
Fig. 2 is a schematic diagram of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the first gear.
Fig. 3 is a schematic view of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the second gear.
Fig. 4 is a schematic view of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the third gear.
Fig. 5 is a schematic view of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the fourth gear.
Fig. 6 is a schematic diagram of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the parallel mode in the first gear.
Fig. 7 is a schematic diagram of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the parallel mode in the second gear.
Fig. 8 is a schematic diagram of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the parallel mode in the third gear.
Fig. 9 is a schematic diagram of a power transmission path of the single-motor hybrid power transmission device according to the present invention in the parallel mode in the fourth gear.
Fig. 10 is a schematic diagram of a power transmission path of the single-motor hybrid power transmission device according to the present invention in a parking power generation mode.
Fig. 11 is a gear map of the single-motor hybrid transmission according to the present invention.
The reference numerals 1-first planetary gear, 11-first sun gear, 12-first planet carrier, 13-first planet gear, 14-first outer gear, 2-second planetary gear, 21-second sun gear, 22-second planet carrier, 23-second planet gear, 24-second outer gear, 31-first brake, 32-second brake, 41-first clutch, 42-second clutch, 5-engine, 6-motor, 71-first intermediate shaft, 72-second intermediate shaft, 73-third intermediate shaft, 8-input shaft, 81-coupler, 82-one-way clutch and 9-output shaft.
Detailed Description
The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.
The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after understanding the present disclosure.
In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.
As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.
Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.
For ease of description, spatial relationship terms such as "above," "upper," "below," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of examples. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.
Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.
The features of the examples described herein may be combined in various ways that will be apparent upon an understanding of the present disclosure. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.
As shown in fig. 1, according to a first aspect of the present invention, there is provided a single-motor hybrid transmission device including an engine 5, a motor 6, a brake member, a clutch member, a first planetary gear set 1, and a second planetary gear set 2.
In the following description, a specific structure of the above-described components of the single-motor hybrid transmission device and connection relationships of the above-described components will be specifically described with reference to fig. 1.
As shown in fig. 1, in the embodiment, the single-motor hybrid transmission may include only one engine 5 and only one motor 6, and may enable multi-mode, multi-gear driving therewith. Specifically, the first planet row 1 may include a first sun gear 11, a first carrier 12, a first planet gear 13, and a first ring gear 14. Wherein the first sun gear 11 may be connected to an engine 5, said engine 5 being adapted to provide power to drive the first sun gear 11 in rotation. The first sun gear 11 can also be connected to a clutch element, which can be connected to the output shaft 9. The output shaft 9 is used for driving the wheels of the vehicle to rotate. The first carrier 12 may be connected (e.g., via a coupling) to an electric motor 6, which electric motor 6 is configured to provide power to drive the first carrier 12 in rotation. The first external ring gear 14 may be connected with a brake member for limiting movement of the connected (e.g., bolted) member. The second planet row 2 may comprise a second sun gear 21, a second planet carrier 22, second planet gears 23 and a second outer ring gear 24. Wherein the second planet carrier 22 can be connected to a clutch member as well as a brake member. The second sun gear 21 may be rigidly connected (i.e., formed as a rigid unitary body or connected as a unitary body by a fixed connection, such as welding) to the first ring gear 14 such that the rotational speed of the second sun gear 21 is maintained consistent with that of the first ring gear 14. The second outer ring gear 24 may be rigidly connected (e.g., welded) to the first carrier 12 such that the rotational speed of the second outer ring gear 24 is maintained consistent with the rotational speed of the first carrier 12. This arrangement enables the transmission between the individual components of the first planetary row 1 and the individual components of the second planetary row 2 to be established in order to achieve a transmission pattern of various gear ratios. In addition, only two planetary rows (namely, the first planetary row 1 and the second planetary row 2) are arranged, and the first planetary row 1 and the second planetary row 2 are coaxially arranged, so that the space utilization rate of the single-motor hybrid power transmission device can be greatly improved, and a plurality of parallel shafts are prevented from being stacked. It should be noted here that the operation of the planetary rows requires locking one of the components or fixing the rotational speed of one of the components, i.e. the purpose of the brake component is to limit the movement of the components in the planetary rows to ensure proper operation of the planetary rows as a whole, and that it is not necessary to ensure that one of the first planetary row 1 or the second planetary row 2 is locked, and that the principle of transmission of the planetary rows can be equally implemented by only fixing the rotational speed of one of the components in the first planetary row 1 or the second planetary row 2 and generating a relative rotational movement of the remaining components with respect to the component whose rotational speed is fixed.
Preferably, as shown in fig. 1, in an embodiment, the braking means may include a first brake 31 and a second brake 32. Wherein a first brake 31 may be coupled to the first ring gear 14 and a second brake 32 may be coupled to the second planet carrier 22. The first brake 31 and the second brake 32 are independent from each other (i.e., the first brake 31 and the second brake 32 are independently provided), so that the single motor hybrid transmission device can selectively combine the first brake 31 and the second brake 32 to control the transmission path of the braking force.
Preferably, as shown in fig. 1, in an embodiment, the clutch part may include a first clutch 41 and a second clutch 42. The first clutch 41 may be connected to the first sun gear 11, and the second clutch 42 may be connected to the second carrier 22. In addition, the first clutch 41 and the second clutch 42 may both be connected to the output shaft 9 (i.e., the first clutch 41 and the second clutch 42 are disposed in parallel). The single motor hybrid transmission device is capable of selectively engaging the first clutch 41 and the second clutch 42 to control the transmission path of the braking force.
Further, preferably, as shown in fig. 1, in an embodiment, the single-motor hybrid transmission device may further include an input shaft 8, a first intermediate shaft 71, a second intermediate shaft 72, and a third intermediate shaft 73. Wherein the input of the input shaft 8 may be connected (e.g. keyed or via a coupling) to the power system of the engine 5 via a coupling 81. The output end of the input shaft 8 may then be sequentially connected to the first intermediate shaft 71 and the third intermediate shaft 73 via the one-way clutch 82 (i.e., the input shaft 8, the first intermediate shaft 71, and the third intermediate shaft 73 are sequentially connected as shown in fig. 1).
The first planet row 1 may be arranged between the first intermediate shaft 71 and the third intermediate shaft 73. The first sun gear 11 of the first planetary gear set 1 can be connected to the first countershaft 71 and the third countershaft 73. It is further explained here that in the embodiment, the first intermediate shaft 71 and the third intermediate shaft 73 may be integrated, and the first sun gear 11 of the first planetary gear set 1 may be assembled to the integrated first intermediate shaft 71 and third intermediate shaft 73 by means of a key fit. The first sun gear 11 is connected to the engine 5 via a first intermediate shaft 71. The output of the third intermediate shaft 73 can then be connected to the first clutch 41, i.e. the first sun gear 11 is connected to the first clutch 41 via the third intermediate shaft 73. The second intermediate shaft 72 may be connected to the second brake 32 and the second clutch 42, i.e., the second planet carrier 22 may be connected to the second brake 32 and the second clutch 42 via the second intermediate shaft 72. The single-motor hybrid power transmission device is arranged in such a way that the transmission path of braking force can be controlled by selectively combining the braking component and the clutch component, so that the transmission modes of various transmission ratios are realized, and further, the multi-mode and multi-gear driving is realized.
The shafts may be connected to the gears by a key, the shafts may be connected to the clutch member by a key or by a coupling, and the brake member may be connected to other members by bolts. Thereby improving the stability of the connection and further improving the stability and accuracy of the power transmission.
Further, as shown in fig. 2 to 11, according to a second aspect of the present invention, there is provided a transmission method of a single-motor hybrid transmission device, which may be the single-motor hybrid transmission device as described above.
Preferably, as shown in fig. 2, in the embodiment, the transmission method of the single-motor hybrid transmission device includes engaging the second clutch 42 and the first brake 31 to place the single-motor hybrid transmission device in the first gear (EV 1). In this case, the power of the motor 6 is transmitted to the first carrier 12. Since the first carrier 12 is rigidly connected to the second external ring gear 24, the first carrier 12 rotates at the same speed as the second external ring gear 24. And since the first brake 31 is engaged, the first brake 31 restricts the rotation of the second sun gear 21, and therefore the rotation speed of the second sun gear 21 is 0. So that the second external ring gear 24 can drive the second planetary gears 23 to revolve, thereby driving the second carrier 22 to rotate (i.e., spin). The power of the motor 6 is transmitted to the second clutch 42 via the second intermediate shaft 72 and finally to the output shaft 9 to drive the wheels of the vehicle in rotation.
Preferably, as shown in fig. 3, in the embodiment, the transmission method of the single-motor hybrid transmission device further includes engaging the first clutch 41 and the second clutch 42 to place the single-motor hybrid transmission device in the second gear (EV 2). In this case, the power of the motor 6 is transmitted to the first carrier 12. Since the first carrier 12 is rigidly connected to the second external ring gear 24, the first carrier 12 and the second external ring gear 24 rotate at the same speed, and since the second sun gear 21 is rigidly connected to the first external ring gear 14, the second sun gear 21 and the first external ring gear 14 rotate at the same speed, thereby allowing the first planetary gear set 1 and the second planetary gear set 2 to operate simultaneously. The power of the motor 6 is split into two parts through the first planetary gear set 1, wherein one part of the power is transmitted to the third intermediate shaft 73 through the first sun gear 11 of the first planetary gear set 1 and is transmitted to the first clutch 41 through the third intermediate shaft 73 and finally transmitted to the output shaft 9, and the other part of the power is transmitted to the second intermediate shaft 72 through the second planet carrier 22 of the second planetary gear set 2 and is transmitted to the second clutch 42 through the second intermediate shaft 72 and is finally transmitted to the output shaft 9, thereby driving the wheels of the vehicle to rotate. Since the first clutch 41 and the second clutch 42 are both engaged, the first planetary gear set 1 and the second planetary gear set 2 are mutually restricted, and the rotational speed of the output shaft 9 (i.e., the output rotational speed) is the same as the rotational speed of the first carrier 12 (i.e., the input rotational speed).
Preferably, as shown in fig. 4, in the embodiment, the transmission method of the single-motor hybrid transmission further includes engaging the first clutch 41 and the first brake 31 to place the single-motor hybrid transmission in the third gear (EV 3). In this case, the power of the motor 6 is transmitted to the first carrier 12. Since the first brake 31 is engaged, the first brake 31 restricts the rotation of the first ring gear 14, and therefore the rotation speed of the first ring gear 14 is 0. So that the first carrier 12 can drive the first planet gears 13 to revolve, and further drive the first sun gear 11 to rotate (i.e., spin). The power of the motor 6 is transmitted to the first clutch 41 through the third intermediate shaft 73 and finally to the output shaft 9 to drive the wheels of the vehicle to rotate.
Preferably, as shown in fig. 5, in the embodiment, the transmission method of the single-motor hybrid transmission further includes engaging the first clutch 41 and the second brake 32 to place the single-motor hybrid transmission in the fourth gear (EV 4). In this case, the power of the motor 6 is transmitted to the first carrier 12. Since the first carrier 12 is rigidly connected to the second external ring gear 24, the rotational speeds of the first carrier 12 and the second external ring gear 24 are the same, and the power of the motor 6 is transmitted to the second external ring gear 24 via the first carrier 12. And since the second brake 32 is engaged, the second brake 32 restricts the rotation of the second intermediate shaft 72 and the rotation of the second carrier 22, and thus the rotation speed of the second carrier 22 is 0. So that the second external ring gear 24 can drive the second planetary gears 23 to rotate (i.e., spin), thereby driving the second sun gear 21 to rotate (i.e., spin). Further, since the second sun gear 21 is rigidly connected to the first ring gear 14, the first ring gear 14 and the second sun gear 21 have the same rotational speed. In addition, when the rotational speed of the first ring gear 14 is fixed, the first carrier 12 can drive the first planet gears 13 to rotate, and thus the first sun gear 11 to rotate. The power of the motor 6 is transmitted to the first clutch 41 through the third intermediate shaft 73 and finally to the output shaft 9 to drive the wheels of the vehicle to rotate.
Still preferably, as shown in fig. 6 to 9, in an embodiment, the transmission method of the single-motor hybrid transmission further includes starting the engine 5 with the single-motor hybrid transmission in the first gear, the second gear, the third gear, or the fourth gear, so that the single-motor hybrid transmission is in a parallel mode, and both the motor 6 and the engine 5 can supply power. That is, in the case where the vehicle is in the first gear, the second gear, the third gear, or the fourth gear, the vehicle may cause the engine 5 to be driven in intervention according to the power demand to increase the power of the vehicle. After the engine 5 is started, the power of the engine 5 is transmitted to the first sun gear 11 and/or the third intermediate shaft 73 through the coupler 81, the input shaft 8, the one-way clutch 82, and the first intermediate shaft 71 in this order. In this case, the power of the engine 5 is interposed in the single-motor hybrid transmission such that the engine 5 and the motor 6 together drive the wheels of the vehicle to rotate. The one-way clutch 82 can avoid the power of the motor 6 from being transmitted to the direction of the engine 5, thereby avoiding electric energy loss and prolonging the service life of the engine 5.
Specifically, as shown in fig. 6, in the embodiment, when the single-motor hybrid transmission device is in the parallel mode of the first gear, the second clutch 42 is engaged, the power of the engine 5 is transmitted from the first intermediate shaft 71 to the first sun gear 11, and as shown in fig. 6, the first brake 31 restricts the rotation of the first ring gear 14 and the second sun gear 21, so that the power of the engine 5 is transmitted to the first carrier 12 together via the first sun gear 11 and the power of the motor 6, and is subsequently transmitted, and finally transmitted to the output shaft 9 via the second clutch 42. Further, since the power transmission subsequent to the transmission to the first carrier 12 through the first sun gear 11 is similar to that in fig. 2 and will not be described in detail herein, however, it is to be noted that the difference between fig. 6 and fig. 2 is that the first brake 31 is connected to the first ring gear 14 in addition to the introduction of the engine 5, and in the embodiment of fig. 2, although not shown, the first brake 31 is also connected to the first ring gear 14, but in the embodiment of fig. 2, the first carrier 1 does not participate in the power transmission, and therefore, the first brake 31 is not shown to be connected to the first ring gear 14 in fig. 2.
As shown in fig. 7, in the embodiment, the first clutch 41 and the second clutch 42 are engaged with the single-motor hybrid transmission in the parallel mode of the second gear. The power of the engine 5 is transmitted from the first intermediate shaft 71 to the third intermediate shaft 73. The power transmission process of the motor 6 is similar to that of fig. 3, and will not be described again. Finally, the power of the engine 5 is transmitted to the output shaft 9 via the first clutch together with a part of the power of the motor 6, and the other part of the power of the motor 6 is transmitted to the output shaft 9 via the second clutch 42.
As shown in fig. 8, in the embodiment, in the case where the single-motor hybrid transmission is in the parallel mode of the third gear, the first clutch 41 is engaged, and the power of the engine 5 is transmitted from the first intermediate shaft 71 to the third intermediate shaft 73. The power transmission process of the motor 6 is similar to that of fig. 4, and will not be described again. Finally, the power of the engine 5 is transmitted to the output shaft 9 via the first clutch 41 together with the power of the motor 6.
As shown in fig. 9, in the embodiment, in the case where the single-motor hybrid transmission is in the parallel mode of the fourth gear, the first clutch 41 is engaged, and the power of the engine 5 is transmitted from the first intermediate shaft 71 to the third intermediate shaft 73. The power transmission process of the motor 6 is similar to that of fig. 5, and will not be described again. Finally, the power of the engine 5 is transmitted to the output shaft 9 via the first clutch 41 together with the power of the motor 6.
Further, preferably, in the embodiment, the transmission method of the single-motor hybrid transmission further includes, in a case where the single-motor hybrid transmission is in the first gear, the second gear, the third gear, the fourth gear, or the parallel mode, depressing a brake plate by a driver of the vehicle to cause the single-motor hybrid transmission to turn on an energy recovery mode. In the first gear, the second gear, the third gear, the fourth gear and the parallel mode, the energy flow is converted into kinetic energy by the electric energy of the power battery through the motor, and finally the vehicle is driven. In the energy recovery mode, the vehicle will cut off the power source of the motor 6 after detecting the braking intention of the driver, and the controller will control the motor 6 to apply excitation to the motor 6, so that the motor 6 is changed from the driving mode to the generating mode, i.e. the motor 6 is converted into a generator to generate electricity (the motor 6 can be regarded as a load or a resistance device to brake the vehicle during the generating process). The kinetic energy of the vehicle can be converted into electric energy to flow to the power battery, so that energy recovery is realized, and energy waste after braking is avoided. In this process, the engaging state of the engaging and disengaging part and the braking part of the single-motor hybrid transmission device is not changed, i.e., the same as the engaging state of the driving mode in which the brake is applied immediately before.
Preferably, as shown in fig. 10, in an embodiment, the transmission method of the single-motor hybrid transmission device further includes engaging the first brake 31 in a state where the vehicle is in a parking or a parking state, so that the single-motor hybrid transmission device is in a parking power generation mode. In this case, the motor 6 is in the power generation mode (i.e., excitation is applied to the motor 6). The power of the engine 5 is transmitted to the first sun gear 11 through the coupling 81, the input shaft 8, the one-way clutch 82, and the first intermediate shaft 71 in this order. Since the first brake 31 is engaged, the first brake 31 restricts the rotation of the first ring gear 14, and therefore the rotation speed of the first ring gear 14 is 0. So that the first sun gear 11 can drive the first planet gears 13 to revolve, and further drive the first planet carrier 12 to rotate. Finally, the first planet carrier 12 drives the motor 6 to rotate so as to realize power generation during parking.
As shown in fig. 11, in the embodiment, the transmission method of the single-motor hybrid transmission device enables four-gear transmission of the generator 6 and the motor 6 together with the engine 5 to supply power, i.e., first-gear (EV 1) transmission, second-gear (EV 2) transmission, third-gear (EV 3) transmission, and fourth-gear (EV 4) transmission and parallel mode. The rotational speeds of the wheels in the first gear, the second gear, the third gear and the fourth gear are sequentially increased. The transmission method of the single-motor hybrid power transmission device can also realize parking power generation (i.e., a parking power generation mode) and braking energy recovery (i.e., an energy recovery mode). The single-motor hybrid power transmission device can realize power output of multiple hybrid modes and multiple gears so as to meet actual working conditions and actual demands and be beneficial to reducing energy consumption.
Further, according to a third aspect of the present invention, there is provided a vehicle including the single-motor hybrid transmission device as described above.
In use, the vehicle establishes a transmission relationship between the first planet row 1 and the second planet row 2 by rigidly connecting the first outer ring gear 14 of the first planet row 1 with the second sun gear 21 of the second planet row 2 and rigidly connecting the second outer ring gear 24 of the second planet row 2 with the first planet carrier 12 of the first planet row 1, enabling a variety of ratio transmissions. The space utilization of the single-motor hybrid transmission device can be improved by providing the first planetary gear row 1 and the second planetary gear row 2 coaxially. The vehicle can control the power transmission path in the single-motor hybrid power transmission device by selecting the combination of the first brake 31, the second brake 32, the first clutch 41 and the second clutch 42, so as to realize multi-mode and multi-gear driving and realize the functions of recovering energy and stopping power generation during running.
It should be noted that the foregoing embodiments are merely illustrative embodiments of the present application, and not restrictive, and the scope of the application is not limited to the embodiments, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any modification, variation or substitution of some of the technical features of the embodiments described in the foregoing embodiments may be easily contemplated within the scope of the present application, and the spirit and scope of the technical solutions of the embodiments do not depart from the spirit and scope of the embodiments of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (11)
1. A single-motor hybrid power transmission device mounted to a vehicle, characterized by comprising:
An engine;
A motor;
a braking member;
a clutch member connected to an output shaft for driving the wheels;
a first planet row including a first sun gear, a first planet carrier, a first planet wheel and a first outer gear ring, wherein the first sun gear is connected with the engine, the first sun gear is connected with the clutch component, the first planet carrier is connected with the motor, the first outer gear ring is connected with the brake component, and
The second planet row is coaxially arranged with the first planet row and comprises a second sun gear, a second planet carrier, a second planet wheel and a second outer gear ring, the second planet carrier is connected with the clutch component, the second planet carrier is connected with the brake component, the second sun gear is rigidly connected with the first outer gear ring, and the second outer gear ring is rigidly connected with the first planet carrier;
the brake part comprises a first brake and a second brake which are arranged independently of each other, the first brake is connected with the first external gear, and the second brake is connected with the second planet carrier;
The clutch component comprises a first clutch and a second clutch, the first clutch and the second clutch are arranged in parallel, the first clutch is connected with the first sun gear, and the second clutch is connected with the second planet carrier;
The single motor hybrid power transmission device further includes:
the first intermediate shaft is connected with the first sun gear;
A second intermediate shaft connected to the second carrier, the second intermediate shaft being connected to the second brake and the second clutch;
A third intermediate shaft connected to the first clutch, the third intermediate shaft connected to the first intermediate shaft, the first planetary row arranged between the first intermediate shaft and the third intermediate shaft, the first sun gear connected to the third intermediate shaft, and
And the input end of the input shaft is connected with the engine through a coupler, and the output end of the input shaft is connected with the first intermediate shaft through a one-way clutch.
2. The transmission method of the single-motor hybrid transmission device according to claim 1, characterized in that the single-motor hybrid transmission device is the single-motor hybrid transmission device, and the transmission method of the single-motor hybrid transmission device includes realizing transmission of a plurality of gears by engaging the first clutch and the second clutch or engaging one of the first clutch and the second clutch in cooperation with one of the first brake and the second brake.
3. The transmission method of the single-motor hybrid transmission according to claim 2, characterized in that the plurality of gear steps includes a first gear step in which the second clutch and the first brake are engaged, a second gear step in which the first clutch and the second clutch are engaged, a third gear step in which the first clutch and the first brake are engaged, and a fourth gear step in which the first clutch and the second brake are engaged.
4. The transmission method of a single motor hybrid transmission according to claim 3, characterized in that,
When the single-motor hybrid power transmission device is in the first gear, power of the motor is transmitted to the second outer gear ring through the first planet carrier, the first brake limits the second sun gear to move, the second outer gear ring drives the second planet gear to rotate and drives the second planet carrier to rotate, so that the power is transmitted to the second clutch through the second intermediate shaft and finally transmitted to the output shaft to drive the wheels to rotate.
5. A transmission method of a single motor hybrid transmission according to claim 3, wherein when the single motor hybrid transmission is in the second gear, the power of the motor is split through the first carrier, one portion of the power is transmitted to the first clutch through the first planetary gear, the other portion of the power is transmitted to the second clutch through the second planetary gear, and the one portion of the power and the other portion of the power are finally transmitted to the output shaft to drive the wheels to rotate.
6. A transmission method of a single motor hybrid transmission according to claim 3, wherein when the single motor hybrid transmission is in the third gear, the power of the motor is transmitted to the first carrier, the first brake restricts the movement of the first outer ring gear, the first carrier drives the first planet gear to rotate and drives the first sun gear to rotate, so that the power is transmitted to the first clutch through the third intermediate shaft and finally transmitted to the output shaft to drive the wheels to rotate.
7. The transmission method of the single-motor hybrid power transmission device according to claim 3, wherein when the single-motor hybrid power transmission device is in the fourth gear, the second brake limits the movement of the second intermediate shaft and the second planet carrier, the power of the motor is transmitted to the second external gear ring through the first planet carrier, the second external gear ring drives the second planet wheel to rotate and drives the second sun gear to rotate, the first external gear ring is rigidly connected with the second sun gear, the power of the motor drives the first planet carrier to rotate, the first planet carrier drives the first planet wheel to rotate and drives the first sun gear to rotate, and the power is transmitted to the first clutch through the third intermediate shaft and finally transmitted to the output shaft to drive the wheels to rotate.
8. The transmission method of a single-motor hybrid transmission according to any one of claims 3 to 7, characterized in that the transmission method of the single-motor hybrid transmission includes:
And starting the engine under the condition that the single-motor hybrid power transmission device is in the first gear, the second gear, the third gear or the fourth gear, so that the single-motor hybrid power transmission device is in a parallel mode, and the power of the engine is finally transmitted to the first sun gear and/or the third intermediate shaft through the coupler, the input shaft, the one-way clutch and the first intermediate shaft.
9. The transmission method of a single-motor hybrid transmission according to claim 8, characterized in that the transmission method of the single-motor hybrid transmission includes:
When the single-motor hybrid power transmission device is in the first gear, the second gear, the third gear, the fourth gear or the parallel mode, a driver of the vehicle depresses a brake plate to turn on an energy recovery mode, the motor is changed from a driving mode to a generating mode, a power source of the motor is cut off and excited, and kinetic energy of the vehicle is converted into electric energy through the motor to flow to a power battery.
10. The transmission method of a single-motor hybrid transmission according to any one of claims 3 to 7, characterized in that the transmission method of a single-motor hybrid transmission further includes:
When the vehicle is in a parking or parking state, the first brake is combined, the single-motor hybrid power transmission device is in a parking power generation mode, the motor is excited, power of the motor is transmitted to the first sun gear through the coupler, the input shaft and the first intermediate shaft, the first brake limits the first outer gear to move, the first sun gear drives the first planet gear to rotate and drive the first planet carrier to rotate, and finally the motor is driven to rotate, so that parking power generation is achieved.
11. A vehicle characterized in that it comprises the single-motor hybrid transmission device according to claim 1.
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| CN202311668994.XA CN117863863B (en) | 2023-12-06 | 2023-12-06 | Single-motor hybrid power transmission device, transmission method and vehicle |
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| CN202311668994.XA CN117863863B (en) | 2023-12-06 | 2023-12-06 | Single-motor hybrid power transmission device, transmission method and vehicle |
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| CN105927715A (en) * | 2016-05-29 | 2016-09-07 | 无锡商业职业技术学院 | Two-stage type planet gear automatic transmission |
| CN106114190A (en) * | 2016-07-13 | 2016-11-16 | 上海迪鲲机电科技有限公司 | Electromechanical power coupling device based on modified model simpson planetary gear mechanism |
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| GB811767A (en) * | 1955-12-08 | 1959-04-08 | Daimler Benz Ag | Improvements relating to epicyclic gear units |
| US6910985B2 (en) * | 2001-05-30 | 2005-06-28 | Jatco Ltd | Gear-operated speed change apparatus for automatic transmission |
| DE102014204009A1 (en) * | 2014-03-05 | 2015-09-10 | Schaeffler Technologies AG & Co. KG | Multi-speed planetary gear system as a component of the drive train of a motor vehicle |
| DE102014220946A1 (en) * | 2014-10-16 | 2016-04-21 | Zf Friedrichshafen Ag | Transmission for a motor vehicle |
| CN205149497U (en) * | 2015-11-27 | 2016-04-13 | 长城汽车股份有限公司 | Vehicle and hybrid gearbox thereof |
| CN112747088B (en) * | 2019-10-29 | 2022-09-13 | 中车时代电动汽车股份有限公司 | New energy automobile and derailleur and gear drive structure thereof |
| DE102019131574A1 (en) * | 2019-11-22 | 2021-05-27 | Schaeffler Technologies AG & Co. KG | Gear unit with two planetary gear sets fixed to one another via ring gear and planetary gear carrier, as well as a motor vehicle with such a gear unit |
| CN116811561B (en) * | 2023-05-25 | 2025-06-27 | 中国第一汽车股份有限公司 | Hybrid power transmission device, control method and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105927715A (en) * | 2016-05-29 | 2016-09-07 | 无锡商业职业技术学院 | Two-stage type planet gear automatic transmission |
| CN106114190A (en) * | 2016-07-13 | 2016-11-16 | 上海迪鲲机电科技有限公司 | Electromechanical power coupling device based on modified model simpson planetary gear mechanism |
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