CN214822572U

CN214822572U - Hybrid power gearbox and hybrid power system

Info

Publication number: CN214822572U
Application number: CN202120407980.2U
Authority: CN
Inventors: 翁文雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-11-23
Anticipated expiration: 2031-02-24

Abstract

The utility model provides a hybrid transmission and hybrid power system relates to hybrid vehicle technical field. A hybrid transmission, comprising: the sequential gearbox is provided with an input shaft and an output shaft, and the input shaft is connected with the engine; the ISG motor is connected with the input shaft; and the TM motor is connected with the output shaft. Compared with the traditional sequential gearbox, the hybrid gearbox is smooth in gear shifting, a motor drives a vehicle when the gear is shifted, power connection is stable, gear shifting impact is small, and no power loss exists; compare in current hybrid transmission, this hybrid transmission increases motor, automatically controlled and battery on the basis of traditional sequence formula gearbox, need not electrohydraulic servo mechanism, and the industrial chain is independently controllable, and the main drive motor power is compared Toyota THS gearbox and is a lot of little simultaneously, therefore the cost is lower.

Description

Hybrid power gearbox and hybrid power system

Technical Field

The utility model belongs to the technical field of hybrid vehicle, concretely relates to hybrid gearbox and hybrid power system.

Background

The gear box is a power transmission device of an automobile and consists of a row of gears with different rows. The hybrid gearbox is a transmission system which can couple the power of an engine and the power of a driving motor in a certain mode and can realize speed change and torque change.

Chinese patent publication No. CN110529569A discloses a hybrid transmission, which comprises an input shaft, an intermediate shaft connected with the input shaft, an output shaft, a differential assembly, a differential driving gear and an output driven gear disposed on the output shaft, a differential driven gear engaged with the differential driving gear and connected with the differential assembly, a hydraulic torque converter and a front row planetary gear mechanism connected with the input shaft, a central support mechanism for receiving power transmitted by the ravigneaux type planetary gear mechanism and transmitting the power to the output driven gear, a first clutch connected with the front row planetary gear mechanism and the ravigneaux type planetary gear mechanism, a second clutch connected with the ravigneaux type planetary gear mechanism and the intermediate shaft, a third clutch connected with the front row planetary gear mechanism and a driving disc, and a one-way clutch connected with the ravigneaux type planetary gear mechanism and a transmission case, the driving motor is connected with the front row planetary gear mechanism through the third clutch.

Most of the existing hybrid power gearboxes are additionally provided with motors and batteries on the basis of the original automatic gearboxes, the electro-hydraulic servo mechanisms of the original automatic gearboxes are high in cost and high in development difficulty, an industrial chain is basically controlled abroad, and part of the hybrid power gearboxes are similar to Toyota THS systems, so that the electro-hydraulic servo mechanisms are not needed, but the main driving motors are high in required power and high in cost.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide an utilize low-cost hybrid transmission and hybrid power system of sequence formula gearbox.

The purpose of the utility model can be realized by the following technical proposal: a hybrid transmission, comprising:

the sequential gearbox is provided with an input shaft and an output shaft, and the input shaft is connected with the engine;

the ISG motor is connected with the input shaft;

the TM motor is connected with the output shaft.

As a further improvement of the utility model, the ISG motor is connected with the input shaft through the first gear pair, the TM motor passes through the second gear pair and is connected with the output shaft.

As a further improvement of the present invention, the input shaft is provided with a first gear set, the output shaft is provided with a second gear set, the gears in the first gear set are engaged with the gears in the second gear set one by one.

As a further improvement of the present invention, the gear in the first gear set and the gear ratio of the corresponding gear in the second gear set decrease progressively from the engine end to the ISG motor end in sequence.

As a further improvement, the gears in the second gear set are provided with dog clutches between two gears, and the dog clutches are sleeved on the output shaft.

As a further improvement, the sequence type transmission case further comprises a shifting fork shaft and a plurality of shifting forks, one end of each shifting fork corresponds to the dog tooth clutch, and the other end of each shifting fork is sleeved on the shifting fork shaft.

As a further improvement, the sequential gearbox further comprises a ratchet wheel, a plurality of grooves are arranged on the ratchet wheel, and the shifting fork is arranged in the corresponding groove.

As a further improvement of the present invention, the groove has a Z-shaped portion for driving the shift fork to shift gears.

As a further improvement of the utility model, the sequence type gearbox still includes the gear shifting motor, the gear shifting motor with the ratchet is connected, is used for control the rotation of ratchet.

A hybrid powertrain system comprising the hybrid transmission of the first aspect, further comprising: the hybrid transmission comprises an engine, a gear shifting motor, a battery and a control system, wherein the gear shifting motor is connected with the hybrid transmission, the control system comprises an HCU, an EMS, a BMS, a motor controller and a gear shifting motor controller, the HCU is respectively connected with the EMS, the BMS, the motor controller and the gear shifting motor controller, the EMS is connected with the engine, the BMS is connected with the battery, the battery is connected with the motor controller, the motor controller is respectively connected with the ISG motor and the TM motor, and the gear shifting motor controller is connected with the gear shifting motor;

the HCU transmits signals to the EMS, the BMS, the motor controller and the gear shifting motor controller, the EMS controls the running state of the engine according to the signals, the BMS controls the running state of the battery according to the signals, the motor controller controls the running states of the ISG motor and the TM motor according to the signals, and the gear shifting motor controller controls the running state of the gear shifting motor according to the signals.

Based on the technical scheme, the utility model discloses can produce following technological effect at least:

1. compared with the traditional sequential gearbox, the hybrid gearbox is smooth in gear shifting, a motor drives a vehicle when the gear is shifted, power connection is stable, gear shifting impact is small, and no power loss exists;

2. compare in current hybrid transmission, this hybrid transmission increases motor, automatically controlled and battery on the basis of traditional sequence formula gearbox, need not electrohydraulic servo mechanism, and the industrial chain is independently controllable, and the main driving motor (TM motor) power compares Toyota THS gearbox a lot of little simultaneously, therefore the cost is lower.

Drawings

Fig. 1 is a schematic diagram of a hybrid transmission of the present invention.

Fig. 2 is a schematic diagram of the input shaft, the output shaft, the first gear set and the second gear set in the hybrid transmission of the present invention.

In the figure, 110, the input shaft; 111. a second gear; 112. a first gear set; 120. an output shaft; 121. a fourth gear; 122. a second gear set; 130. dog clutch; 140. a shifting fork; 150. a fork shaft; 160. a ratchet wheel; 161. a groove; 162. a Z-shaped portion; 210. an engine; 220. EMS; 310. an ISG motor; 311. a first gear; 320. a TM motor; 321. a third gear; 330. a motor controller; 410. a shift motor; 420. a shift motor controller; 510. a battery; 520. a BMS; 600. an HCU.

Detailed Description

The following is a specific embodiment of the present invention, and the technical solution of the present invention is further described with reference to fig. 1-2, but the present invention is not limited to this embodiment.

A hybrid transmission, comprising: a sequential gearbox, an ISG Motor 310 (Integrated Starter Generator), and a TM Motor 320 (Traction Motor). The sequential gearbox is provided with an input shaft 110 and an output shaft 120, the input shaft 110 is connected with an engine 210, the ISG motor 310 is connected with the input shaft 110, and the TM motor 320 is connected with the output shaft 120.

When the automobile starts, the sequential gearbox is in a neutral gear, the TM motor 320 drives the automobile to move forward, and meanwhile, the ISG motor 310 drives the input shaft 110 to rotate to drag the engine 210 to start; when the ratio of the rotation speed of the input shaft 110 to the rotation speed of the output shaft 120 is equal to the first gear transmission ratio, the sequential transmission is engaged in the first gear, the automobile is driven by the engine 210 instead, and at this time, the TM motor 320 can generate electricity or assist the engine 210 to drive the automobile according to different automobile loads. Since the ratio of the rotation speed of the input shaft 110 to the rotation speed of the output shaft 120 is exactly equal to the first gear ratio during shifting, the impact of shifting is small, and since the TM motor 320 drives the vehicle during starting, a clutch is not required to be arranged between the engine 210 and the input shaft 110, as a conventional sequential transmission is used, so that the cost can be saved.

Further, a first gear 311 is fixedly connected to the ISG motor 310, a second gear 111 is fixedly connected to the input shaft 110, the first gear 311 and the second gear 111 are engaged to form a first gear pair, a third gear 321 is fixedly connected to the TM motor 320, a fourth gear 121 is fixedly connected to the output shaft 120, the third gear 321 and the fourth gear 121 are engaged to form a second gear pair, the input shaft 110 and the ISG motor 310 transmit power through the first gear pair, and the output shaft 120 and the TM motor 320 transmit power through the second gear pair.

Further, a first gear set 112 is fixedly connected to the input shaft 110, and the first gear set 112 includes a plurality of gears, 6 gears in this embodiment, but the number of the gears may be other numbers, and each gear has a different size. The output shaft 120 is sleeved with a second gear set 122, and the number of gears in the second gear set 122 is the same as that of the first gear set 112. The gears of the first gear set 112 and the gears of the second gear set 122 are in one-to-one correspondence and are meshed with each other. By providing the first gear set 112 and the second gear set 122 on the input shaft 110 and the output shaft 120, respectively, the hybrid transmission of the present invention forms a plurality of gears.

Further, the gears formed by meshing the first gear set 112 and the second gear set 122 are sequentially defined as first gear, second gear, third gear, fourth gear, fifth gear and sixth gear from the side close to the engine 210 to the side close to the ISG motor 310. The transmission ratios of the six gears are sequentially reduced. The gear ratios of the six gears are sequentially decreased so that the rotation speed of the output shaft 120 is gradually increased from the first gear to the sixth gear at different gears under the same rotation speed of the engine 210, so that the vehicle can be continuously accelerated.

Further, be provided with a dog clutch 130 between six gears of output shaft 120 in this embodiment two liang, dog clutch 130 cover is established on the output shaft 120, through the spline with output shaft 120 connects, dog clutch 130 can follow output shaft 120's axial free slip can drive when rotating around circumference output shaft 120 rotates. High speed shifting is achieved by providing dog clutch 130.

Further, the sequential transmission case further includes a shift fork shaft 150, a plurality of shift forks 140 and a ratchet 160, wherein one end of each shift fork 140 is connected to the corresponding dog tooth clutch 130, and the other end is sleeved on the shift fork shaft 150. The ratchet gear 160 is provided with a plurality of grooves 161, and the number of the grooves 161 is the same as that of the shift forks 140. The end of the fork 140 sleeved on the fork shaft 150 is disposed in the groove 161. The grooves 161 are integrally arranged in a strip shape along the circumferential direction of the ratchet wheel 160, each groove 161 is provided with a Z-shaped part 162, and when the ratchet wheel 160 runs at a certain angle, the Z-shaped part 162 can push the corresponding shifting fork 140 to shift gears.

Further, the sequential transmission further includes a shift motor 410, wherein the shift motor 410 is connected to the ratchet wheel 160 and is used for controlling the rotation of the ratchet wheel 160 to push the shift fork 140 to shift gears.

The utility model discloses hybrid transmission's control method as follows:

1. starting: when the automobile starts, the sequential gearbox is in a neutral gear, the TM motor 320 drives the automobile to move forward, and meanwhile, the ISG motor 310 drives the input shaft 110 to rotate to drag the engine 210 to start; when the ratio of the rotation speed of the input shaft 110 to the rotation speed of the output shaft 120 is equal to a first gear transmission ratio, the gear shifting motor 410 drives the ratchet wheel 160 to rotate, the corresponding shifting fork 140 is pushed to shift the sequential gearbox into a first gear, the automobile is driven by the engine 210 instead, and at the moment, the TM motor 320 can generate electricity or assist the engine 210 to drive the automobile according to different automobile loads or different electric quantities of the battery 510;

2. gear-up: when the engine 210 drives the automobile to shift to a gear shifting rotating speed, the gear shifting motor 410 rotates, the sequential gearbox is in a neutral gear, the automobile is driven by the TM motor 320, the rotating speed of the engine 210 is reduced to a high gear synchronous rotating speed, high gear synchronization is completed, the gear shifting motor 410 drives the shifting fork 140 to a high gear, gear shifting is completed, and power of the engine 210 is output. The TM motor 320 may generate electricity or assist the engine 210 to drive the vehicle according to different automobile loads or different electric quantities of the battery 510;

3. gear reduction: the gear shifting motor 410 rotates, the sequential gearbox is in a neutral gear, the automobile is driven by the TM motor 320 converted from the engine 210, at the moment, the rotating speed of the engine 210 is increased to a low-gear synchronous rotating speed, low-gear synchronization is completed, the gear shifting motor 410 drives the shifting fork 140 to a low gear, gear shifting is completed, and power output of the engine 210 is achieved. The TM motor 320 may generate electricity or assist the engine 210 to drive the vehicle according to different automobile loads or different electric quantities of the battery 510;

4. backing a car: the sequential gearbox is in a neutral gear, and the TM motor 320 rotates reversely to drive the automobile to reverse.

The utility model also provides a hybrid power system, including above-mentioned hybrid transmission, still include: the Hybrid Control System comprises an Engine 210, a Battery 510 and a Control System, wherein the Control System comprises an HCU600 (Hybrid Control Unit, Hybrid vehicle controller), an EMS220 (Engine Management System), a BMS520 (Battery Management System), a motor controller 330 and a shift motor controller 420, the HCU600 is respectively connected with the EMS220, the BMS520, the motor controller 330 and the shift motor controller 420, the EMS220 is connected with the Engine 210, the BMS520 is connected with the Battery 510, the Battery 510 is connected with the motor controller 330, the motor controller 330 is respectively connected with the ISG motor 310 and the TM motor 320, and the shift motor controller 420 is connected with the shift motor 410;

the HCU600 transmits signals to the EMS220, the BMS520, the motor controller 330, and the shift motor controller 420, the EMS220 controls the operation state of the engine 210 according to the signals, the BMS520 controls the operation state of the battery 510 according to the signals, the motor controller 330 controls the operation states of the ISG motor 310 and the TM motor 320 according to the signals, and the shift motor controller 420 controls the operation state of the shift motor 410 according to the signals.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A hybrid transmission, comprising:

the ISG motor is connected with the input shaft;

the TM motor is connected with the output shaft.

2. A hybrid transmission according to claim 1, wherein the ISG motor is connected to the input shaft by a first gear pair and the TM motor is connected to the output shaft by a second gear pair.

3. A hybrid transmission according to claim 1, wherein a first set of gears is provided on said input shaft and a second set of gears is provided on said output shaft, the gears of said first set of gears meshing with the gears of said second set of gears one on the other.

4. A hybrid transmission according to claim 3, wherein the gear ratios of the gears of said first gearset to the corresponding gears of said second gearset decrease in order from the engine side to the ISG motor side.

5. A hybrid transmission as claimed in claim 3, wherein dog clutches are provided between gears of the second set, the dog clutches being sleeved on the output shaft.

6. The hybrid transmission of claim 5, wherein the sequential transmission further comprises a shift fork shaft and a plurality of shift forks, one end of each shift fork is connected with the corresponding dog tooth clutch, and the other end of each shift fork is sleeved on the shift fork shaft.

7. The hybrid transmission of claim 6, further comprising a ratchet wheel having a plurality of grooves, wherein the shift forks are disposed in the corresponding grooves.

8. A hybrid transmission according to claim 7, wherein said recess has a Z-shape for driving said fork to shift.

9. A hybrid transmission according to claim 7, further comprising a shift motor coupled to said ratchet wheel for controlling rotation of said ratchet wheel.

10. A hybrid powertrain system comprising the hybrid transmission of claim 1, and further comprising: the hybrid transmission comprises an engine, a gear shifting motor, a battery and a control system, wherein the gear shifting motor is connected with the hybrid transmission, the control system comprises an HCU, an EMS, a BMS, a motor controller and a gear shifting motor controller, the HCU is respectively connected with the EMS, the BMS, the motor controller and the gear shifting motor controller, the EMS is connected with the engine, the BMS is connected with the battery, the battery is connected with the motor controller, the motor controller is respectively connected with the ISG motor and the TM motor, and the gear shifting motor controller is connected with the gear shifting motor;