阅读说明：本技术 动力传递系统 (Power transmission system ) 是由 石伟 周之光 于 2019-11-26 设计创作，主要内容包括：本发明提供了一种动力传递系统,包括控制器、气室、第一涡旋机构、第二涡旋机构、第三自锁机构和控制气室内气体储放的气阀,其中,气阀与控制器连接,气室与第一涡旋机构和第二涡旋机构分别连通,第一涡旋机构和第二涡旋机构通过第三自锁机构互相连接。本发明的动力传递系统以气体作为传递介质实现动力的传递,不存在主动部分与被动部分的摩擦接触,不会出现动力传动部件磨损的情况。同时气体流通产生的震动噪音极小,气体的压缩和膨胀过程中无明显放热,传动效率高,传动平顺性好。(The invention provides a power transmission system which comprises a controller, a gas chamber, a first vortex mechanism, a second vortex mechanism, a third self-locking mechanism and a gas valve for controlling gas in the gas chamber to be stored, wherein the gas valve is connected with the controller, the gas chamber is respectively communicated with the first vortex mechanism and the second vortex mechanism, and the first vortex mechanism and the second vortex mechanism are mutually connected through the third self-locking mechanism. The power transmission system of the invention uses gas as a transmission medium to realize power transmission, and has no frictional contact between an active part and a passive part, and the condition of abrasion of a power transmission part can not occur. Meanwhile, vibration noise generated by gas circulation is extremely low, obvious heat release does not occur in the compression and expansion processes of gas, the transmission efficiency is high, and the transmission smoothness is good.)

1. A power transmission system is characterized by comprising a controller (1), an air chamber (2), a first vortex mechanism (3), a second vortex mechanism (4), a third self-locking mechanism (5) and an air valve (10) for controlling air in the air chamber (2) to be stored, wherein,

the air valve (10) is connected with the controller (1);

the air chamber (2) is communicated with the first vortex mechanism (3) and the second vortex mechanism (4) respectively;

the first vortex mechanism (3) and the second vortex mechanism (4) are connected with each other through the third self-locking mechanism (5);

the first scroll mechanism (3) comprises a first base, a first fixed scroll (31) fixed on the first base and a first movable scroll (32) engaged with the first fixed scroll (31), wherein the first movable scroll (32) is connected with a power input end (6), and the first movable scroll (32) is configured to rotate around the center of the first fixed scroll (31) to perform eccentric motion;

the second scroll mechanism (4) comprises a second base, a second fixed scroll (41) fixed on the second base and a second movable scroll (42) engaged with the second fixed scroll (41), wherein the second movable scroll (42) is connected with a power output end (7), and the center of the second movable scroll (42) can rotate around the center of the second fixed scroll (41) to perform eccentric motion.

2. The power transmission system according to claim 1, wherein a first exhaust hole is provided in a center of the first fixed scroll (31), the first exhaust hole communicating with the gas chamber (2).

3. The power transmission system according to claim 1, wherein a second discharge hole is provided in the center of the second fixed scroll (41), the second discharge hole communicating with the gas chamber (2).

4. The power transmission system according to claim 1, wherein the third self-locking mechanism (5) is connected with the first orbiting scroll (32) and the second orbiting scroll (42), respectively, and the third self-locking mechanism (5) is configured to lock the first orbiting scroll (32) and the second orbiting scroll (42) to rotate at the same speed.

5. The power transmission system of claim 1, wherein the controller (1) is further configured to obtain a speed signal of the power input (6) and a speed signal of the power output (7), and to adjust the opening and the switching time of the gas valve (10) based on the speed signal of the power input (6) and the speed signal of the power output (7).

6. A power transmission system according to any one of claims 1 to 5, wherein a first self-locking mechanism (8) is further provided between the first orbiting scroll (32) and the first fixed scroll (31), the first self-locking mechanism (8) being configured to lock the first orbiting scroll (32) and the first fixed scroll (31) so as to rotate at the same speed.

7. The power transmission system according to claim 6, wherein a second self-locking mechanism (9) is further provided between the second orbiting scroll (42) and the second fixed scroll (41), the second self-locking mechanism (9) being configured to lock the second orbiting scroll (42) and the second fixed scroll (41) to rotate at the same speed.

8. The power transmission system according to any one of claims 1 to 5, characterized in that a pressure sensor is further provided in the gas chamber (2), the pressure sensor being configured to detect pressure information of the gas in the gas chamber (2) and send the pressure information to the controller (1).

9. The power transmission system according to claim 8, wherein the controller (1) is further configured to receive pressure information sent by the pressure sensor, and adjust the opening and the switching time of the gas valve (10) according to the pressure information.

10. A power transmission system according to any one of claims 1-5, characterised in that the power input (6) is an engine output shaft and the power output (7) is a gearbox input shaft.

Technical Field

The invention relates to the technical field of automobile structures, in particular to a power transmission system.

Background

A power transmission system is generally installed between an engine and a transmission, and functions to cut off and transmit power between the engine and the transmission. The power transmission system is used for enabling the engine and the transmission to be gradually jointed, so that the automobile is ensured to start stably; the connection between the engine and the transmission can be temporarily cut off so as to facilitate gear shifting and reduce impact during gear shifting; when the automobile is braked emergently, the brake device plays a separating role, prevents transmission systems such as a speed changer and the like from overloading, and plays a certain protection role.

In the whole process from starting to normal running of the automobile, a driver can operate the power transmission system according to requirements, so that the engine and the transmission system are temporarily separated or gradually connected, and the power output from the engine to the transmission system is cut off or transmitted.

The power transmission system comprises a driving part and a driven part, wherein the driving part and the driven part can be temporarily separated or gradually jointed, and relative rotation can also be generated in the transmission process. Rigid connections between the driving and driven portions of the power transmission system are not available. Any vehicle has a power transmission system, only in a different form.

Because the power transmission system has three states of separation, engagement and relative rotation, the phenomena of abrasion of parts, vibration, noise and heat can occur in use. The wearing of parts can cause the joint and separation states of the driving part and the driven part to change, and the generated heat can cause thermal deformation, so that the smoothness of power transmission is reduced, and finally the smoothness of the automobile is reduced.

In the automotive field, clutches are the most common products of power transmission systems. At present, the clutches are mainly divided into four types, namely an electromagnetic clutch, a magnetic powder clutch, a friction type clutch and a hydraulic clutch. The friction clutch is located between engine and gear box, and is used to transfer the torque stored in engine flywheel to gear box to ensure the vehicle to transfer proper driving force and torque to driving wheel under different running conditions. During semi-linkage, the power input end and the power output end of the clutch have a rotation speed difference, namely, the proper power is transmitted through the rotation speed difference.

The friction clutch is used as a power transmission device, and the driving part and the driven part are separated, contacted and semi-linked through friction to achieve full power output. The smoothness control difficulty of the whole process is very high, the noise generated by friction cannot be eliminated, and meanwhile, a large amount of heat can be generated. And with the use of the automobile, the defects are more and more serious, and the performance and the driving experience of the automobile are influenced.

Disclosure of Invention

In order to solve the above problems, the present invention provides a power transmission system, in which a driving part and a driven part transmit power through a gas medium, so as to reduce wear of parts caused by friction, and the power transmission is smooth and stable, and is simple to control.

The invention specifically adopts the following technical scheme:

a power transmission system comprises a controller, an air chamber, a first vortex mechanism, a second vortex mechanism, a third self-locking mechanism and an air valve for controlling air in the air chamber to be stored. Wherein, the air valve is connected with the controller; the air chamber is respectively communicated with the first vortex mechanism and the second vortex mechanism; the first vortex mechanism and the second vortex mechanism are connected with each other through a third self-locking mechanism.

The first vortex mechanism comprises a first base, a first fixed vortex disc fixed on the first base and a first movable vortex disc meshed with the first fixed vortex disc, wherein the first movable vortex disc is connected with a power input end, and the center of the first movable vortex disc can rotate around the center of the first fixed vortex disc to perform eccentric motion; the second vortex mechanism comprises a second base, a second fixed vortex disc fixed on the second base and a second movable vortex disc meshed with the second fixed vortex disc, the second movable vortex disc is connected with the power output end, and the center of the second movable vortex disc can rotate around the center of the second fixed vortex disc to do eccentric motion. A

Preferably, a first discharge hole is provided at the center of the first fixed scroll, the first discharge hole communicating with the gas chamber.

Preferably, a second discharge hole is provided at the center of the second fixed scroll, the second discharge hole communicating with the gas chamber.

Preferably, a third self-locking mechanism is connected with the first movable scroll and the second movable scroll respectively, and the third self-locking mechanism is configured to lock the first movable scroll and the second movable scroll so as to rotate at the same speed.

Preferably, the controller is further configured to acquire a rotation speed signal of the power input end and a rotation speed signal of the power output end, and adjust the opening degree and the switching time of the air valve according to the rotation speed signal of the power input end and the rotation speed signal of the power output end.

Preferably, a first self-locking mechanism is further arranged between the first movable scroll and the first fixed scroll and is configured to lock the first movable scroll and the first fixed scroll so as to rotate at the same speed.

And a second self-locking mechanism is arranged between the second movable scroll and the second fixed scroll and is configured to lock the second movable scroll and the second fixed scroll so as to rotate at the same speed.

Preferably, a pressure sensor is further provided in the gas chamber, and the pressure sensor is configured to detect pressure information of the gas in the gas chamber and transmit the pressure information to the controller.

Preferably, the controller is further configured to receive pressure information sent by the pressure sensor, and adjust the opening and the switching time of the gas valve according to the pressure information.

Preferably, the power input end is an engine output shaft, and the power output end is a gearbox input shaft.

The power transmission system provided by the invention realizes power transmission by taking gas as a transmission medium, and has no frictional contact between an active part and a passive part, thereby greatly reducing the abrasion between power transmission parts. The vibration noise that the gas circulation produced is minimum, simultaneously, has not obviously exothermic in the compression of gas and the inflation process, and transmission efficiency is high, and the transmission ride comfort is good.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of the connections within a power transmission system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a meshing surface of a first fixed scroll and a first orbiting scroll according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the cavity variation of the first scroll mechanism in operation, wherein a), b), c), and d) are continuously 90 ° out of phase respectively.

Reference numerals: 1. a controller; 2. an air chamber; 3. a first scroll mechanism; 31. a first fixed scroll; 32. a first orbiting scroll; 4. a second scroll mechanism; 41. a second fixed scroll; 42. a second orbiting scroll; 5. a third self-locking mechanism; 6. a power input; 7. a power output end; 8. a first self-locking mechanism; 9. a second self-locking mechanism; 10. and (4) an air valve.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.

The embodiment of the invention provides a power transmission system, as shown in fig. 1, which comprises a controller 1, an air chamber 2, a first vortex mechanism 3, a second vortex mechanism 4, a third self-locking mechanism 5 and an air valve 10 for controlling air in the air chamber 2 to be stored. The air valve 10 is connected with the controller 1, the air chamber 2 is respectively communicated with the first vortex mechanism 3 and the second vortex mechanism 4, and the first vortex mechanism 3 and the second vortex mechanism 4 are connected with each other through the third self-locking mechanism 5.

The first scroll mechanism 3 comprises a first base, a first fixed scroll 31 fixed on the first base and a first movable scroll 32 engaged with the first fixed scroll 31, wherein the first movable scroll 32 is connected with the power input end 6, and the center of the first movable scroll 32 can rotate around the center of the first fixed scroll 31 to perform eccentric motion; the second scroll mechanism 4 includes a second base, a second fixed scroll 41 fixed on the second base, and a second movable scroll 42 engaged with the second fixed scroll 41, the second movable scroll 42 is connected to the power output end 7, and the second movable scroll 42 is configured such that its center can rotate around the center of the second fixed scroll 41 to make an eccentric motion.

In some embodiments, as shown in fig. 2, the first fixed scroll 31 and the first movable scroll 32 are two involute scroll wraps with the same shape and an angle of relative rotation of 180 °, the first fixed scroll 31 and the first movable scroll 32 are engaged in a relative offset manner to form the first scroll mechanism 3, the first fixed scroll 31 is fixed, the first movable scroll 32 is driven by external force to make translational revolution, and the center of the first movable scroll 32 rotates around the center of the first fixed scroll 31 to make eccentric motion. As shown in fig. 3, the respective meshing points of the two move gradually and continuously along the tooth wall of the scroll wrap, and the volumes of the respective closed working chambers formed during the movement also change continuously. Wherein, the tooth wall of the scroll wrap refers to each side surface of the scroll teeth of the fixed scroll and the movable scroll; the working chamber refers to a closed space formed between scroll wraps of the fixed scroll and the orbiting scroll during movement, as shown by a hatched portion between the first fixed scroll 31 and the first orbiting scroll 32 in fig. 3. The second fixed scroll 41 and the second orbiting scroll 42 constitute the second scroll mechanism 4 in the same manner.

In some embodiments, the first scroll mechanism 3 and the second scroll mechanism 4 are identical in structure and equal in size. The first vortex mechanism 3 and the second vortex mechanism 4 can rotate at the same speed in a stable state, and power is stably output.

In some embodiments, the first scroll mechanism 3 and the second scroll mechanism 4 are similar in structure and different in size. The number of the scroll turns in the first scroll mechanism 3 is greater than that in the second scroll mechanism 4, the power transmitted by one rotation of the first scroll mechanism 3 is greater than that of the second scroll mechanism 4 in a stable state, and the rotating speed of the second scroll mechanism 4 is higher than that of the first scroll mechanism 3.

In some implementations of the embodiment of the present invention, a first discharge hole is provided at the center of the first fixed scroll 31, and a second discharge hole is provided at the center of the second fixed scroll 41, both of which are communicated with the gas chamber 2.

When the first movable scroll disk 32 rotates, the tooth profile line of the first movable scroll disk performs eccentric motion to form a cavity different from that of the first fixed scroll disk 31, and the cavity compresses gas from big to small and then discharges the gas through the first exhaust hole. Fig. 3 shows the change of the volume of one crescent-shaped working chamber, wherein the cross-hatched scroll is the first movable scroll 32, and the first movable scroll 32 performs an orbital translation around the center of the first fixed scroll 31. Wherein, the figure d), the figure c), the figure b) and the figure a) are respectively continuously different from each other by 90 degrees of phase, the volume of the working chamber thereof is gradually reduced until the gas inside the working chamber is exhausted by the first exhaust hole.

Similarly, the relative movement between the second orbiting scroll 42 and the second fixed scroll 41 causes the gas to be compressed and then discharged through the second discharge hole. On the contrary, the gas enters from the first exhaust hole or the second exhaust hole, and the first orbiting scroll 32 or the second orbiting scroll 42 is rotated.

In some embodiments, first fixed scroll 31 compresses gas inside first scroll mechanism 3 and discharges the compressed gas to gas chamber 2 through a first discharge hole when moving. According to the opening or closing of the gas valve 10, the gas in the gas chamber 2 is discharged from the gas valve 10 to the outside of the power transmission system or from the second discharge hole into the inside of the second scroll mechanism 4.

In some embodiments, when gas valve 10 is closed, gas inside first scroll mechanism 3 is compressed and stored in gas chamber 2 due to the mutual movement between first fixed scroll 31 and first movable scroll 32, and when gas chamber 2 is full of gas, compressed gas enters second scroll mechanism 4 from the second gas discharge hole due to the fact that the pressure inside the gas chamber is higher than the external pressure. The pressure action of the gas pushes the second movable scroll 42 to start rotating, and finally the gas is discharged out of the power transmission system, so that a gas flow route from the outside to the first scroll mechanism 3 to the gas chamber 2 to the second scroll mechanism 4 to the outside is formed.

In some embodiments, the reverse "outside-second scroll mechanism 4-chamber 2-first scroll mechanism 3-outside" gas flow path may be formed based on the same principle.

In some implementations of the embodiments of the present invention, the third self-locking mechanism 5 is connected to the first orbiting scroll 32 and the second orbiting scroll 42, respectively. The third self-locking mechanism 5 is configured to lock the first orbiting scroll 32 and the second orbiting scroll 42 to rotate at the same speed.

In some embodiments, when all the gas in the first scroll mechanism 3 enters the inside of the second scroll mechanism 4 and the rotating speed of the second movable scroll 42 is pushed to be the same as the rotating speed of the first movable scroll 32, the third self-locking mechanism 5 is started, a connection is established between the first movable scroll 32 and the second movable scroll 42, the second movable scroll 42 is driven to rotate synchronously by the first movable scroll 32 through the third self-locking mechanism 5, and the power transmission does not depend on the gas medium any more. The gas valve 10 can be opened to discharge the compressed gas in the gas chamber 2, so as to prevent the pressure in the gas chamber 2 from being too high to cause danger.

In some implementations of embodiments of the present invention, the controller 1 is further configured to obtain a speed signal of the power input 6 and a speed signal of the power output 7, and adjust the opening and the switching time of the gas valve 10 according to the speed signal of the power input 6 and the speed signal of the power output 7.

In some embodiments, the controller 1 may further determine a rotation speed difference between the power input end 6 and the power output end 7 according to the rotation speed signal of the power input end 6 and the rotation speed signal of the power output end 7, so as to adjust the opening and the switching time of the air valve 10, and further adjust the pressure in the air chamber 2, so that the power input end 6 and the power output end 7 reach the same rotation speed as soon as possible.

In some embodiments, the controller 1 may also send a signal to a central control system to adjust the rotational speed of the power input 6.

In some implementations of the embodiment of the present invention, a first self-locking mechanism 8 is further disposed between the first orbiting scroll 32 and the first fixed scroll 31, and the first self-locking mechanism 8 is configured to lock the first orbiting scroll 32 and the first fixed scroll 31 to rotate at the same speed. A second self-locking mechanism 9 is further provided between the second orbiting scroll 42 and the second fixed scroll 41, and the second self-locking mechanism 9 is configured to lock the second orbiting scroll 42 and the second fixed scroll 41 to rotate at the same speed.

In some embodiments, after the power transmission system establishes a steady state, the first self-locking mechanism 8 locks the first orbiting scroll 32 and the first fixed scroll 31, the second self-locking mechanism 9 locks the second orbiting scroll 42 and the second fixed scroll 41, and the third self-locking mechanism 5 locks the first orbiting scroll 32 and the second orbiting scroll 42. The power input by the power input end 6 drives the first scroll mechanism 3 to rotate, and the power on the first scroll mechanism 3 is transmitted to the second scroll mechanism 4 through the third self-locking mechanism 5, wherein the first fixed scroll 31 and the first movable scroll 32 are relatively static, and the second fixed scroll 41 and the second movable scroll 42 are relatively static. The power input by the power input end 6 is directly transmitted to the power output end 7 through the first movable scroll 32, the third self-locking mechanism 5 and the second movable scroll 42. The steady state refers to a holding state after the engagement or disengagement of the power transmission system is completed.

In some implementations of embodiments of the present invention, a pressure sensor is further disposed in the gas chamber 2, and the pressure sensor is configured to detect pressure information of the gas in the gas chamber 2 and send the pressure information to the controller 1.

In some embodiments, the pressure information of the gas in the gas chamber 2 is detected by a pressure sensor and sent to the controller 1, and the controller 1 adjusts the opening and closing time of the gas valve 10 according to the pressure information. When the pressure sensor detects that the gas pressure exceeds a first preset pressure value, the controller 1 controls the gas valve 10 to be opened, and part of gas is discharged to reduce the pressure; when the pressure sensor detects that the gas pressure is lower than a second preset pressure value, the controller 1 controls the gas valve 10 to close, and the gas continues to be stored in the gas chamber 2. Wherein the first preset pressure value refers to a pressure value when the compressed gas just fills the gas chamber 2, and the second preset pressure value refers to a pressure value when the compressed gas fills 80% of the volume of the gas chamber 2.

In some embodiments, an alarm is further provided in the power transmission system, and when the pressure sensor detects that the gas pressure in the gas chamber 2 exceeds a first preset pressure value, an alarm signal is sent to the central control system, and the central control system controls the gas valve 10 to open. Specifically, the central control system receives an alarm signal and gives an alarm to an operator in a form of displaying on a display and/or giving a sound, the operator gives an opening instruction of the gas valve 10, the central control system sends the opening instruction to the controller 1, and the controller 1 controls the gas valve 10 to open and release compressed gas in the gas chamber 2; when the pressure sensor detects that the gas pressure in the gas chamber 2 exceeds a third preset pressure value, the central control system automatically sends an opening instruction to the controller 1, and the controller 1 controls the gas valve 10 to open to discharge the compressed gas in the gas chamber 2. The third preset pressure value refers to a pressure value at which the compressed gas fills 110% of the volume of the gas chamber 2. When the pressure sensor detects that the gas pressure in the gas chamber 2 is lower than a second preset pressure value, the central control system automatically sends a closing instruction to the controller 1, and the controller 1 controls the gas valve 10 to close. It should be understood that the first preset pressure value, the second preset pressure value and the third pressure value may be other values, and those skilled in the art may adjust the specific values corresponding to the controller to act according to the needs.

In some implementations of embodiments of the present invention, the power input 6 is an engine output shaft and the power output 7 is a gearbox input shaft.

In the power transmission system of the automobile, an engine output shaft is connected with the first orbiting scroll 32, and a transmission input shaft is connected with the second orbiting scroll 42. The starting process of the automobile is as follows:

when the engine runs at idle speed, the rotating speed of the first movable scroll 32 is the same as that of the engine, the controller 1 controls the gas valve 10 to be opened, gas discharged from the first scroll mechanism 3 is released out of a power transmission system through the gas valve 10, gas pressure is not transmitted into the second scroll mechanism 4, and the rotating speeds of the second movable scroll 42 and an input shaft of a gearbox are both zero;

when the automobile starts, the controller 1 controls the opening degree of the gas valve 10 to gradually decrease, compressed gas starts to enter the second scroll mechanism 4, the second movable scroll 42 starts to rotate under the action of gas pressure, the input shaft of the gearbox also rotates along with the second scroll mechanism, and the automobile starts to start. At this time, a rotation speed difference exists between the rotation speed of the output shaft of the engine and the rotation speed of the input shaft of the gearbox. With the gas valve 10 completely closed, all the gas discharged from the first scroll mechanism 3 enters the second scroll mechanism 4 and is discharged after the second movable scroll 42 is pushed to rotate. At the moment, the rotating speed of the output shaft of the engine is the same as that of the input shaft of the gearbox, and the automobile starts;

after the automobile power transmission system is in a stable state, the automobile third self-locking mechanism 5 is started to lock the first movable scroll 32 and the second movable scroll 42, the air valve 10 is opened, and power is directly transmitted without depending on a gas medium but depending on fixed connection between the first scroll mechanism 3 and the second scroll mechanism 4.

The starting process of the automobile is that the power transmission system is switched from off to on, correspondingly, the switching-on and switching-off process of the power transmission system of the automobile is as follows:

the gas valve 10 is closed, the gas discharged by the first scroll mechanism 3 is stored in the gas chamber 2, after a certain pressure is reached, the third self-locking mechanism 5 is unlocked, and at the moment, the second movable scroll 42 keeps rotating at the same speed as the first movable scroll 32 due to the pressure action of the gas;

gradually opening the air valve 10 to enable a pressure difference to exist between the gas exhausted from the first scroll mechanism 3 and the gas entering the second scroll mechanism 4, at the moment, the rotating speed of the second movable scroll 42 begins to be reduced, a rotating speed difference exists between the second movable scroll 42 and the first movable scroll 32, and the rotating speed of the input shaft of the gearbox is reduced;

the air valve 10 is completely opened, the gas discharged from the first vortex mechanism 3 is discharged from the air valve 10, the pressure in the air chamber 2 is the same as the external atmospheric pressure, the second movable vortex disk 42 loses the driving force, the rotating speed is reduced to zero, the rotating speed of the input shaft of the gearbox is reduced to zero, and the automobile is in a stable state again.

The power transmission system provided by the embodiment of the invention is different from the traditional power transmission device in that the power transmission mode is transmitted by frictional contact, the power transmission is completed by gas compression and expansion, the abrasion of parts is reduced in the power transmission process, the generated vibration noise is low, the generated heat is less, and the transmission efficiency is high.

The power transmission system provided by the embodiment of the invention has the advantages of simple and compact structure, easy industrialization and extremely low cost, and the core parts of the power transmission system are common long-life and high-efficiency mechanical parts, so that the service life of the power transmission system is prolonged.

The power transmission system provided by the embodiment of the invention can also realize bidirectional power transmission, is particularly suitable for new energy automobiles, can meet the forward power transmission requirement of the automobiles and the reverse power transmission requirement of the new energy automobiles in an energy recovery mode when the power input end is the output shaft of the motor, transmits the power from the driving wheels of the automobiles to the output shaft of the motor, sets the motor in a power generation mode, and converts the received mechanical energy into electric energy to be stored in a battery.

The power transmission system provided by the embodiment of the invention has strong expansibility, and can be suitable for various power transmission occasions by adjusting the size of the air cavity of the vortex mechanism and controlling the air cavity. If when needing bigger power transmission, only need to change the scroll mechanism that the number of the vortex circles is few for the scroll mechanism that the number of the vortex circles is many.

The power transmission system provided by the embodiment of the invention can be additionally provided with a control valve, a sensor and the like, so that the system can meet more diversified technical requirements.

In the present application, it is to be understood that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated.

The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.