Double-motor input single-stage planet row transmission structure

Abstract

A double-motor input single-stage planet row transmission structure comprises a first motor, a second motor and a single-stage planet row, the single-stage planet row comprises a sun gear, a planet gear meshed with the sun gear, a planet carrier assembled on the planet gear and an inner gear ring, and the inner ring of the inner gear ring is meshed with the planet gear and used for power output. The transmission is characterized in that the first motor is coaxially connected with the planet carrier through a first clutch, and the second motor is coaxially connected with the sun gear through a second clutch. The first motor and the second motor can independently input power to the single-stage planet row and can also jointly input power to the single-stage planet row, transmission of different speed ratios and torques can be achieved according to working condition requirements, the speed ratio adjusting capacity is improved, and the requirements of the speed ratios and the torques under different working conditions are met; when the two motors input power to the single-stage planet row together, the efficient working intervals of the motors are fully utilized, and the cruising ability of the automobile is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a single -stage planetary row transmission structure of double motor input belongs to pure electric vehicle power transmission technical field. BACKGROUND

[0002] For pure electric vehicle, can be divided into distributed drive and central drive from structure. The main components of central drive are single motor or double motor plus transmission or reducer. According to the requirement of vehicle general layout, the structure of transmission system all wants to be as compact as possible. According to the requirement of vehicle economy, transmission system wants to make energy consumption reduce through reasonable speed ratio design. Traditional central drive includes motor, parallel shaft type reducer and electric control, and has the following defects:

[0003] 1. Mode speed ratio adjustment ability is limited, causes motor to work in low efficiency zone most of the time, cannot utilize motor high efficiency work interval, reduces the cruising range of electric vehicle.

[0004] 2. The radial and axial dimensions of parallel shaft type transmission structure are relatively large, which is not conducive to vehicle layout. UTILITY MODEL CONTENTS

[0005] The single -stage planetary row transmission structure of double motor input provided by the utility model can input power to the single -stage planetary row separately by motor one and motor two, or input power to the single -stage planetary row jointly, can realize different speed ratio and torque transmission according to working condition demand, improves speed ratio adjustment ability, meets the demand of speed ratio and torque under different working conditions, fully utilizes motor high efficiency work interval when two motors input power to the single -stage planetary row jointly, and improves the cruising ability of automobile.

[0006] To achieve the above purpose, the utility model adopts the technical scheme that:

[0007] The single -stage planetary row transmission structure of double motor input includes motor one, motor two and single -stage planetary row, and the single -stage planetary row includes sun gear, planetary gear meshed with the sun gear, planet carrier assembled on the planetary gear and inner ring meshed with the planetary gear and used for power output inner gear ring, characterized in that: motor one is connected with planet carrier coaxially through clutch one, and motor two is connected with sun gear coaxially through clutch two.

[0008] Preferably, the single -stage planetary row is coaxially arranged between motor one and motor two, input shaft one is coaxially fixed on planet carrier, input shaft two coaxially aligned with input shaft one is coaxially fixed on sun gear, clutch one connects the output end of input shaft one and motor one, and clutch two connects the output end of input shaft two and motor two.

[0009] Preferably, the output flange is coaxially fixed on the inner gear ring, the output flange is arranged on the side close to motor two, and input shaft two is coaxially fixed with sun gear through the output flange.

[0010] Preferably, the clutch one and the clutch two are electromagnetic clutches.

[0011] The utility model discloses a beneficial effect is:

[0012] The utility model discloses a single -stage planetary row transmission structure of double -motor input, motor one is connected with planetary carrier coaxially through clutch one, and motor two is connected with sun gear coaxially through clutch two, and the access and separation of motor one and single -stage planetary row are controlled through clutch one, and the access and separation of motor two and single -stage planetary row are controlled through clutch two, and motor one and motor two can independently input power to single -stage planetary row, can also input power to single -stage planetary row together, when only motor one inputs power to single -stage planetary row, power is exported through inner toothed circle, and under the condition that clutch two accesses, forms the counter -drag charge to motor two, when only motor two inputs power to single -stage planetary row, power is exported through inner toothed circle, and under the condition that clutch one accesses, forms the counter -drag charge to motor one, when motor one and motor two input power to single -stage planetary row together, power is exported through inner toothed circle, can realize different speed ratio and torque transmission according to the working condition demand, improve the speed ratio adjusting ability, satisfy the demand of speed ratio and moment under different working conditions, when two motors input power to single -stage planetary row together, fully utilize motor high -efficient work interval, improve the endurance of car. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the transmission principle drawing of single -stage planetary row transmission structure of double -motor input of the utility model. CONCRETE IMPLEMENTATION

[0014] The embodiment of the utility model is explained in detail below. Figure 1 The embodiment of the utility model is explained in detail below.

[0015] Single -stage planetary row transmission structure of double -motor input, including motor one 1, motor two 2 and single -stage planetary row 3, single -stage planetary row 3 includes sun gear 31, planetary gear 32 with the meshing of sun gear 31, planetary carrier 33 assembled on planetary gear 32 and inner ring with the meshing of planetary gear 32 and be used for power output inner toothed circle 34, it is characterized in that: motor one 1 is connected with planetary carrier 33 coaxially through clutch one 4, and motor two 2 is connected with sun gear 31 coaxially through clutch two 5.

[0016] The single-stage planetary gear transmission structure of the dual-motor input described above, motor one 1 is coaxially connected with the planetary carrier 33 through the clutch one 4, and motor two 2 is coaxially connected with the sun gear 31 through the clutch two 5. The connection and separation of motor one 1 and the single-stage planetary gear 3 are controlled through the clutch one 4, and the connection and separation of motor two 2 and the single-stage planetary gear 3 are controlled through the clutch two 5. Motor one 1 and motor two 2 can independently input power to the single-stage planetary gear 3, or can jointly input power to the single-stage planetary gear 3. When only motor one 1 inputs power to the single-stage planetary gear 3, the power is output through the inner ring gear 34, and under the condition that the clutch two 5 is connected, the motor two 2 is charged in reverse. When only motor two 2 inputs power to the single-stage planetary gear 3, the power is output through the inner ring gear 34, and under the condition that the clutch one 4 is connected, the motor one 1 is charged in reverse. When motor one 1 and motor two 2 jointly input power to the single-stage planetary gear 3, the power is output through the inner ring gear 34. According to the working condition requirements, different speed ratios and torque transmissions can be realized, the speed ratio adjustment ability is improved, and the speed ratio and torque requirements under different working conditions are met. When the two motors jointly input power to the single-stage planetary gear, the motor high-efficiency working interval is fully utilized, and the endurance of the automobile is improved.

[0017] The single-stage planetary gear is coaxially arranged between the motor one 1 and the motor two 2, the input shaft one 6 is coaxially fixed on the planetary carrier 33, the input shaft two 7 is coaxially fixed on the sun gear 31 and coaxially aligned with the input shaft one 6, the clutch one 4 connects the input shaft one 6 and the output end of the motor one 1, and the clutch two 5 connects the input shaft two 7 and the output end of the motor two 2. The single-stage planetary gear 3 is coaxially arranged between the motor one 1 and the motor two 2, the planetary carrier 33 is connected with the clutch one 4 through the input shaft one 6, and the sun gear 31 is connected with the clutch one 4 through the input shaft two 7, forming a coaxially arranged transmission structure, improving the compactness of the transmission structure and the convenience of transmission connection.

[0018] The inner ring gear 34 is coaxially fixed on the output flange 8, the output flange 8 is arranged on the side close to the motor two 2, and the input shaft two 7 penetrates the output flange 8 and is coaxially fixed with the sun gear 31. The inner ring gear 34 drives the output flange 8 to rotate to form the output of the power, the output flange 8 is arranged on the side close to the motor two 2, the input shaft two 7 penetrates the output flange 8 and is fixed with the sun gear 31, and the setting of the output flange 8 does not increase the radial size of the transmission structure, further improving the compactness of the transmission structure and being beneficial to the vehicle arrangement.

[0019] The clutch one 4 and the clutch two 5 are both electromagnetic clutches. The electromagnetic clutch can be precisely controlled by the controller, so that the motor one 1, the motor two 2, the clutch one 4 and the clutch two 5 can be coordinately controlled by the controller, so as to realize the rapid adjustment of different speed ratios and torques according to the working condition requirements.

[0020] The technical scheme of the embodiments of the utility model is completely described above in combination with the drawings, and it needs to be indicated that the described embodiments are only a part of the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor all belong to the protection range of the utility model.

Claims

1. A single-stage planetary gear transmission structure with dual motor inputs, comprising a first motor, a second motor, and a single-stage planetary gear set, wherein the single-stage planetary gear set comprises a sun gear, planet gears meshing with the sun gear, a planet carrier mounted on the planet gears, and an internal gear ring meshing with the planet gears and used for power output, characterized in that: The first motor is coaxially connected to the planetary carrier via a first clutch, and the second motor is coaxially connected to the sun gear via a second clutch.

2. The single-stage planetary gear transmission structure with dual motor input as described in claim 1, characterized in that: The single-stage planetary gear set is coaxially arranged between motor one and motor two. Input shaft one is coaxially fixed on the planetary carrier, and input shaft two, which is coaxially aligned with the input shaft, is coaxially fixed on the sun gear. Clutch one connects input shaft one to the output end of motor one, and clutch two connects input shaft two to the output end of motor two.

3. The single-stage planetary gear transmission structure with dual motor input according to claim 2, characterized in that: The output flange is coaxially fixed on the internal gear ring. The output flange is located on the side near the second motor. The second input shaft passes through the output flange and is coaxially fixed with the sun gear.

4. The single-stage planetary gear transmission structure with dual motor input as described in claim 1, characterized in that: Both clutch one and clutch two are electromagnetic clutches.

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