Stepless speed change hybrid transmission device

Abstract

The utility model belongs to the technical field of vehicle transmission devices, and particularly relates to a stepless speed change hybrid transmission device and a transmission method.The stepless speed change hybrid transmission device comprises a power control unit, a first motor, a second motor, an engine unit, a power distribution unit and a storage battery; the first motor, the second motor and the engine unit are movably connected with the power distribution unit. The power control unit is configured to control the operation state of the first motor and / or the second motor and / or the engine unit, so that the power distribution unit outputs corresponding power, or the storage battery is charged by the first motor and / or the second motor; torques of the first motor, the second motor and the engine unit are flexibly distributed through the power control unit and the power distribution unit, continuous output of power is achieved without pause, the second motor can shunt the rotating speed and the torque of the engine unit while generating power, the engine unit works under the most economical working condition, and the service life of the engine unit is prolonged. And the effects of energy conservation and emission reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to general vehicle technical field, concretely relates to vehicle transmission device, and especially relates to a kind of continuously variable transmission hybrid transmission device. BACKGROUND

[0002] The existing hybrid power system is provided with a set of motor power device and a set of engine power device, which can only provide power to the vehicle by the motor power device or the engine power device alone, and there is a scene that needs to frequently switch the motor power device and the engine power device, resulting in unstable power output and energy waste.

[0003] Therefore, it is urgent to develop a new continuously variable transmission hybrid transmission device to solve the technical problem of unstable power output caused by frequent switching when the motor power and the engine power are set alone.

[0004] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, the above description is not considered as prior art information. INVENTION CONTENTS

[0005] The embodiments of the present disclosure at least provide a continuously variable transmission hybrid transmission device.

[0006] In a first aspect, the embodiments of the present disclosure provide a continuously variable transmission hybrid transmission device, comprising: a power control unit, a first motor, a second motor, an engine group, a power distribution unit and a battery; wherein the first motor, the second motor and the engine group are electrically connected with the power control unit, and the first motor, the second motor and the engine group are movably connected with the power distribution unit, and the first motor, the second motor and the engine group are electrically connected with the battery; the power control unit is configured to control the operating state of the first motor and / or the second motor and / or the engine group, so as to output corresponding power by the power distribution unit, or charge the battery by the first motor and / or the second motor.

[0007] In an optional embodiment, the first motor is movably connected with the power distribution unit through a first gear and a transition gear in sequence; and the first motor and the power distribution unit transmit power through the first gear and the transition gear in sequence.

[0008] In an optional embodiment, the engine group is movably connected with the power distribution unit through a clutch gear and a half shaft gear in sequence; and the engine group and the power distribution unit transmit power through the clutch gear and the half shaft gear in sequence.

[0009] In an alternative embodiment, the engine set comprises an engine and a clutch, the clutch is electrically connected with the power control unit, the engine is movably connected with the clutch gear through the clutch, and the power control unit is configured to control the clutch to engage or disengage, so that the engine is engaged or separated with the clutch gear.

[0010] The utility model discloses the beneficial effect is, the utility model discloses a power control unit, power distribution unit flexible distribution first motor, second motor and engine set's torque, realize power sustained output and no abrupt change, and second motor can shunt the engine set's rotating speed and torque when generating electricity, make the engine set work under the most economic condition, play the role of energy saving and emission reduction.

[0011] The other features and advantages of the utility model will be set forth in the subsequent description, and partially become obvious from the description, or be understood by implementing the utility model. The purpose and other advantages of the utility model are realized and obtained in the structure specially pointed out in the description and the drawings.

[0012] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically described, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0014] Figure 1 The principle block diagram of a continuously variable transmission hybrid transmission device provided by the embodiment of the present disclosure is shown.

[0015] In the drawing:

[0016] 1, power control unit, 2, first motor, 21, first gear, 22, transition gear, 3, second motor, 4, engine set, 41, engine, 42, clutch, 43, clutch gear, 44, half shaft gear, 5, power distribution unit, 6, battery. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0018] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular articles "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0019] As used herein, the phrases "in an embodiment," "according to an embodiment," "in some embodiments," and the like generally mean the particular feature, structure, or characteristic following the phrase is included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. As used herein, the terms "example," "exemplary," and the like are utilized to merely indicate that an example or illustration is provided, and are not to be construed as a preference or a basis for prioritizing one or more embodiments over other embodiments. Rather, the use of terms such as "example," "exemplary," and the like are intended to present concepts in a concrete manner.

[0020] It is to be noted that like-numbers and letters on the figures identify like elements, and thus, once an element is defined in one figure, it is not necessarily redefined in a subsequent figure.

[0021] Some embodiments of the utility model will be described below in detail in combination with the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] As Figure 1As shown, at least one embodiment provides a continuously variable hybrid transmission device, which comprises: a power control unit 1, a first motor 2, a second motor 3, an engine group 4, a power distribution unit 5 and a battery 6; wherein the first motor 2, the second motor 3 and the engine group 4 are electrically connected with the power control unit 1 respectively, the first motor 2, the second motor 3 and the engine group 4 are movably connected with the power distribution unit 5 respectively, and the first motor 2, the second motor 3 and the engine group 4 are electrically connected with the battery 6; the power control unit 1 is configured to control the operating state of the first motor 2 and / or the second motor 3 and / or the engine group 4, so as to make the power distribution unit 5 output corresponding power, or charge the battery 6 by the first motor 2 and / or the second motor 3.

[0023] Specifically, the power control unit 1 can adopt an on-board controller.

[0024] Specifically, the power distribution unit 5 can adopt a central differential.

[0025] Specifically, the power distribution unit 5 can drive wheels, tractor PTO devices and other mechanisms to realize efficient output of the hybrid.

[0026] Specifically, please refer to Figure 1 , in which the solid line is a structural connection line, and the dashed line is a control connection line.

[0027] In at least one embodiment, the torque of the first motor 2, the second motor 3 and the engine group 4 is flexibly distributed by the power control unit 1 and the power distribution unit 5, so as to realize continuous power output without jerk, and the second motor 3 can divert the speed and torque of the engine group 4 while generating electricity, so as to make the engine group 4 work in the most economic condition and play a role in energy saving and emission reduction.

[0028] In at least one embodiment, please refer to Figure 1 , the first motor 2 is movably connected with the power distribution unit 5 through the first gear 21 and the transition gear 22 in sequence; and the first motor 2 and the power distribution unit 5 transmit power through the first gear 21 and the transition gear 22 in sequence.

[0029] Specifically, the speed ratio of the first motor 2 and the power distribution unit 5 is 2:1.

[0030] In at least one embodiment, please refer to Figure 1 , the engine group 4 is movably connected with the power distribution unit 5 through the clutch gear 43 and the half shaft gear 44 in sequence; and the engine group 4 and the power distribution unit 5 transmit power through the clutch gear 43 and the half shaft gear 44 in sequence.

[0031] Specifically, the clutch gear 43 and the half axle gear 44 are variable speed gears, and the speed ratio is related to the rated speed of the engine 41 in the second motor 3 and the engine group 4, and the speed ratio is denoted by R.

[0032] Specifically, the rotation speed of the first motor 2 is n1, the torque is T1, and the power is P1.

[0033] Specifically, the rotation speed of the second motor 3 is n2, the torque is T2, and the power is P2.

[0034] Specifically, the rotation speed of the power distribution unit 5 is n3, the torque is T3, and the power is P3.

[0035] In at least one embodiment, referring to Figure 1 , the engine group 4 comprises an engine 41 and a clutch 42; the clutch 42 is electrically connected to the power control unit 1, and the engine 41 is movably connected to the clutch gear 43 through the clutch 42; the power control unit 1 is configured to control the clutch 42 to engage or disengage, so that the engine 41 is engaged or separated from the clutch gear 43.

[0036] Specifically, the rotation speed of the engine 41 is n4, the torque is T4, and the power is P4.

[0037] Specifically, according to the characteristics of the power distribution unit 5, n1+Rn4=2n3, T1+T4 / R=2T3, and P1+P4=2P3.

[0038] In at least one embodiment, when the power control unit 1 performs the pure electric mode, the power control unit 1 is configured to control the first motor 2 to start and the second motor 3 to be stationary, so that the power distribution unit 5 outputs power as the output power of the first motor 2.

[0039] Specifically, the first motor 2 directly drives the power distribution unit 5 to rotate to realize power output, at this time the power control unit 1 controls the second motor 3 to be in a stationary state, according to n1+Rn4=2n3, the clutch 42 idles at 2Rn1 speed, and the rotation direction of the clutch 42 is opposite to that of the power distribution unit 5.

[0040] Specifically, when there is a large torque output demand, the second motor 3 immediately rotates at n1 speed, and the rotation direction of the second motor 3 is opposite to that of the first motor 2, at this time the half axle gear 44 and the clutch 42 are in a stationary state, the clutch 42 is engaged, and the rotation speed of the second motor 3 is increased again to start the engine 41 to realize torque input.

[0041] Specifically, in the pure electric mode, the clutch 42 is disengaged, and the engine 41 stops working.

[0042] Specifically, during deceleration, the first motor 2 acts as a generator to charge the battery 6, at this time the half shaft gear 44 and the corresponding meshing components contain part of kinetic energy during high speed operation, the second motor 3 also acts as a generator to realize kinetic energy recovery.

[0043] In at least one embodiment, when the power control unit 1 executes the hybrid mode, the power control unit 1 is configured to control the first motor 2 to start, the second motor 3 to start and the clutch 42 to engage, until the second motor 3 starts the engine 41, and the engine 41 provides part of the output power to the first motor 2, the battery 6 through the second motor 3, so that the power distribution unit 5 outputs power as the sum of the output power of the first motor 2 and the engine 41 minus the output power of the second motor 3.

[0044] Specifically, since the engine 41 converts part of the output power to the first motor 2 and the battery 6, the engine set 4 can work in the most economical condition, which plays a role in energy saving and emission reduction.

[0045] Specifically, the clutch 42 is engaged, and the engine 41 is started by the second motor 3, and the first motor 2 outputs power together.

[0046] Specifically, according to the economic speed and power region of the engine 41 calibrated, the second motor 3 plays a "variable pitch role" to dominate the engine 41 to be in the high-efficiency working speed region.

[0047] Specifically, the excess power of the engine 41 can be generated by the second motor 3 to charge the battery 6 and be used by the first motor 2, at this time P3=P1+P4-P2.

[0048] In at least one embodiment, when the power control unit 1 executes the hybrid mode, the power control unit 1 is further configured to control the second motor 3 to superimpose power to the power distribution unit 5, so that the power distribution unit 5 outputs power as the sum of the output power of the first motor 2, the second motor 3 and the engine 41.

[0049] Specifically, when the battery 6 has sufficient power, the first motor 2, the second motor 3 and the engine 41 can work in parallel and output power at the same time, at this time P3=P1+P4+P2, and the deceleration charging and pure electric mode are the same.

[0050] In at least one embodiment, when the power control unit 1 executes the direct drive mode, the power control unit 1 is configured to control the second motor 3 to start and the clutch 42 to engage until the second motor 3 starts the engine 41, and the first motor 2 remains idling, so that the power distribution unit 5 outputs power as the difference between the output power of the engine 41 and the second motor 3; when the power control unit 1 executes the direct drive mode and the engine 41 starts, the power control unit 1 is further configured to control the second motor 3 to be stationary, so that the power distribution unit 5 outputs power as the output power of the engine 41.

[0051] Specifically, the engine 41 is started by the second motor 3, the engine 41 has a rotational speed greater than Rn3 / 2, and the reverse force when the second motor 3 is charging acts together to realize power output, at this time the first motor 2 is in an idling state, and P3=P4-P2.

[0052] Specifically, a locking device is added to the second motor 3, the second motor 3 is locked after the engine 41 starts, the clutch 42 engages the motor to directly drive the power distribution unit 5 to rotate to realize kinetic energy output, at this time the first motor 2 is in an idling state, and P3=P4.

[0053] In at least one embodiment, when the power control unit 1 executes the original power generation mode, the power control unit 1 is configured to control the first motor 2 to be stationary, the clutch 42 to engage, and the second motor 3 to start, so that the engine 41 charges the battery 6 through the second motor 3.

[0054] Specifically, the mechanical structure locks the first motor 2 or the power distribution unit 5, engages the clutch 42, starts the engine 41, and the second motor 3 rotates in the opposite direction of the engine 41 to charge the battery 6, and at the same time P3=0.

[0055] Based on the same technical concept, at least one embodiment also provides a transmission method using the continuously variable hybrid transmission device as described above, which comprises: when the power control unit 1 executes the pure electric mode, the first motor 2 is started and the second motor 3 is stationary by the power control unit 1, so that the power distribution unit 5 outputs power as the output power of the first motor 2; when the power control unit 1 executes the hybrid mode, the first motor 2 is started, the second motor 3 is started and the clutch 42 is engaged by the power control unit 1, until the second motor 3 starts the engine 41, and the engine 41 provides part of the output power to the first motor 2 and the battery 6 through the second motor 3, so that the power distribution unit 5 outputs power as the sum of the output powers of the first motor 2 and the engine 41 minus the output power of the second motor 3; when the power control unit 1 executes the hybrid mode, the second motor 3 superimposes power to the power distribution unit 5 by the power control unit 1, so that the power distribution unit 5 outputs power as the sum of the output powers of the first motor 2, the second motor 3 and the engine 41; when the power control unit 1 executes the direct drive mode, the second motor 3 is started and the clutch 42 is engaged by the power control unit 1, until the second motor 3 starts the engine 41, and the first motor 2 remains idling, so that the power distribution unit 5 outputs power as the difference between the output powers of the engine 41 and the second motor 3; when the power control unit 1 executes the direct drive mode and the engine 41 is started, the second motor 3 is stationary by the power control unit 1, so that the power distribution unit 5 outputs power as the output power of the engine 41; when the power control unit 1 executes the regenerative braking mode, the first motor 2 is stationary, the clutch 42 is engaged and the second motor 3 is started by the power control unit 1, so that the engine 41 charges the battery 6 through the second motor 3.

[0056] In summary, the utility model discloses a power control unit, power distribution unit flexible distribution first motor, second motor and engine set torque, realize power sustained output and no jerk, and second motor can shunt the engine set speed and torque when generating, make the engine set work in the most economic condition, play the role of energy saving and emission reduction;Mechanical structure is simple, and parts are few, and can save manufacturing cost and improve reliability;Can drive wheel, tractor PTO device and other mechanisms, realize hybrid high -efficient output.

[0057] The disclosures and other solutions, examples, embodiments, modules and functional operations described in this document can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or in combinations of one or more of them. The disclosed and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a tangible and non-transitory computer readable medium for execution by, or to control the operation of, data processing apparatus. The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more of them. The term "data processing apparatus" encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can also include, in addition to a hardware component, code that creates an execution environment for computer programs, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

[0058] A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code). A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and are interconnected by a communication network.

[0059] The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by special purpose logic circuitry, and that apparatus can also be implemented as special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0060] Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical disks, or optical disks. However, a computer need not have such devices. Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto-optical disks; and CD-ROM, DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

[0061] Although this patent document contains many details, it should not be construed to limit the scope of any utility novel or claim to the precise embodiments described herein, but rather should be construed to cover any alternatives, modifications, equivalents, and the like that are included within the spirit and scope of the specific utility novel or claim. Some features of the presently described embodiments can also be implemented in a single embodiment, while other features can be implemented in multiple embodiments. Conversely, various features of a single embodiment can also be implemented in multiple embodiments, or in any suitable combination of embodiments. Moreover, although the features described above can be described as acting in particular combinations, one or more features from a combination can be removed and the claim can be directed to a subcombination or a subcombination variant.

[0062] Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring such an order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing can be advantageous. Moreover, the separation of various system components in the embodiments described herein should not be understood as requiring such separation in all embodiments.

[0063] Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.

[0064] A first component is directly coupled to a second component when there are no intervening components between the first component and the second component other than a wire, trace, or another medium. A first component is indirectly coupled to a second component when there are intervening components between the first component and the second component other than a wire, trace, or another medium. The term "coupled" and variations thereof include both direct and indirect coupling. Use of the term "about" in reference to a numerical value means a range of plus or minus 10% of the numerical value unless otherwise indicated.

[0065] While several embodiments are provided in the disclosure, it should be understood that the disclosed system and method might be implemented in many other specific forms without departing from the spirit or scope of the disclosure. The present examples are therefore to be considered as illustrative and not restrictive, and the intention is not to limit the detailed description to the given details. For example, various elements or components can be combined or integrated in another system, or certain features can be omitted or not implemented.

[0066] In several embodiments provided herein, it is to be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative, for example, the flowcharts and block diagrams in the drawings show possible implementation architectures, functions and operations of the apparatus, method and computer program product according to the embodiments of the present application. In this regard, each block in the flowchart or block diagram can represent a module, a program segment or a part of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different order than that shown in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0067] In addition, the various embodiments described and illustrated herein can be combined with other systems, methods or techniques without departing from the scope of the present disclosure. Other items shown or discussed as separate from other items or described as occurring alone may, in actual practice, be performed in conjunction with other items or with multiple instances of the same item. The mere fact that certain measures are recited in mutually different or overlapping embodiments does not indicate that the combinations of these measures were not contemplated at the time the embodiments were made. The scope of the disclosure is therefore indicated by the appended claims, rather than the foregoing description. In addition, it is contemplated that at least some of the features and / or functions described herein can be provided with at least one computer program product that comprises a computer-readable medium having stored thereon computer program instructions that can direct a computer or other programmable data processing apparatus to implement one or more of the methods, or functions described herein. As will be realized, the computer program instructions can also be stored and / or accessed on memory that other computer programs can read, such as a magnetic, optical or other memory. The issuing of the computer program instructions may, for example, be accomplished using a signal media, such as a carrier wave or other transport mechanism, and can be implemented using any of a variety of media, such as wireless media, storage media, or any suitable combination thereof. The computer program instructions can also be executed using a combination of one or more physical or virtual processors or computer devices. The instructions can be executed by a single physical or virtual processor or computer device, or by separate physical or virtual processors or computer devices working in combination.

Claims

1. A continuously variable hybrid transmission, characterized by, The application relates to a continuously variable hybrid transmission device, comprising: a power control unit (1), a first motor (2), a second motor (3), an engine set (4), a power distribution unit (5) and a storage battery (6); wherein the first motor (2), the second motor (3) and the engine set (4) are electrically connected with the power control unit (1) respectively, the first motor (2), the second motor (3) and the engine set (4) are movably connected with the power distribution unit (5) respectively, and the first motor (2), the second motor (3) and the engine set (4) are electrically connected with the storage battery (6); the power control unit (1) is configured to control the running state of the first motor (2) and / or the second motor (3) and / or the engine set (4) so that the power distribution unit (5) outputs corresponding power or the storage battery (6) is charged by the first motor (2) and / or the second motor (3).

2. The continuously variable hybrid transmission device according to claim 1, wherein the first motor (2) is movably connected with the power distribution unit (5) through a first gear (21) and a transition gear (22) in sequence; the first motor (2) and the power distribution unit (5) perform power transmission through the first gear (21) and the transition gear (22) in sequence.

3. The continuously variable hybrid transmission device according to claim 1, wherein the engine set (4) is movably connected with the power distribution unit (5) through a clutch gear (43) and a half shaft gear (44) in sequence; the engine set (4) and the power distribution unit (5) perform power transmission through the clutch gear (43) and the half shaft gear (44) in sequence.

4. The continuously variable hybrid transmission device according to claim 3, wherein the engine set (4) comprises an engine (41) and a clutch (42); the clutch (42) is electrically connected with the power control unit (1), and the engine (41) is movably connected with the clutch gear (43) through the clutch (42); the power control unit (1) is configured to control the clutch (42) to engage or disengage so that the engine (41) is engaged with or separated from the clutch gear (43). ​

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