CN114992072A

CN114992072A - Automatic energy storage and release device and vehicle with same

Info

Publication number: CN114992072A
Application number: CN202210635616.0A
Authority: CN
Inventors: 纳霄
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-09-02

Abstract

The invention relates to an automatic energy storage and release device and a vehicle with the same. The automatic energy storage and release device comprises: a bottom bracket having opposite first and second axial ends; the sleeve is movably sleeved on the middle shaft and is provided with a first sleeve end and a second sleeve end which are opposite; an elastic energy storage member housed within the sleeve and having a first end fixed to the bottom bracket and a second end fixed to the sleeve; a friction force switch including a housing and first and second force applying members disposed within a cavity of the housing, the second shaft end and the second sleeve end rotatably extending into the cavity, the first and second force applying members respectively locking the second shaft end and the second sleeve end to a first inner wall of the cavity; and the force transmission clutch is provided with an inner ring and an outer ring which rotate synchronously in the radial direction and can move relatively in the axial direction, the inner ring can be actuated to actuate the middle shaft to unlock and enable the elastic energy storage piece to store energy, and the outer ring can be actuated to unlock the sleeve and enable the elastic energy storage piece to release energy. The device can recover and store the braking kinetic energy of the vehicle.

Description

Automatic energy storage and release device and vehicle with same

Technical Field

The invention relates to the technical field of vehicles, in particular to an automatic energy storage and release device and a vehicle with the same.

Background

With the development of social economy, automobiles have become indispensable transportation tools for people to go out and ride instead of walk. Urban road vehicles and traffic lights are more, so that people need to frequently control the starting and stopping of the vehicles when driving the vehicles, and when restarting the vehicles, the engines are needed to provide power again to realize the starting of the vehicles, which undoubtedly increases the usage amount of fuel oil or batteries of the vehicles.

In order to save energy consumption of the vehicle, devices with energy storage and release functions have been developed in the prior art. When the vehicle brakes, the energy storage and release device can recover inertia kinetic energy generated by braking the vehicle, and when the vehicle is restarted, the recovered energy can be released to assist in driving the vehicle to move forwards.

In the prior art, three energy storage and release devices with different energy conversion forms exist. One is to convert the inertia kinetic energy generated by braking the vehicle into electric energy; one is to convert the inertia kinetic energy into gas internal energy; still another is to convert the inertial kinetic energy into rotational kinetic energy of the flywheel. The energy storage and release device for converting inertial kinetic energy into electric energy or gas internal energy often has the problem of low energy recovery efficiency, and the energy storage and release device for converting inertial kinetic energy into rotational kinetic energy of a flywheel has the problems of less energy storage and incapability of realizing long-term energy storage. Therefore, the existing energy storage and release devices cannot simultaneously ensure high efficiency, large reserves and long-term energy storage.

Accordingly, there is a need in the art for a new solution to the above problems.

Disclosure of Invention

In order to solve the above problems in the prior art, that is, to solve the technical problem that the energy storage and release device in the prior art cannot simultaneously ensure high efficiency, large storage capacity and long-term energy storage, the invention provides an automatic energy storage and release device. The automatic energy storing and releasing device comprises a middle shaft, a first energy storing and releasing device and a second energy storing and releasing device, wherein the middle shaft is provided with a first shaft end and a second shaft end which are opposite; a sleeve movably fitted over the bottom bracket axle and having first and second opposite sleeve ends; an elastic energy storage member received within the sleeve and having a first end fixed to the bottom bracket axle and a second end fixed to the sleeve; a friction force switch including a housing and first and second force applying members disposed within a cavity of the housing, the second shaft end and the second sleeve end rotatably extending into the cavity, the first force applying member applying a force to the second shaft end to lockingly abut the second shaft end against a first interior wall of the cavity and the second force applying member applying a force to the second sleeve end to lockingly abut the second sleeve end against the first interior wall of the cavity; and a force transmission clutch which is provided with an inner ring and an outer ring which rotate synchronously in the radial direction and can move relatively in the axial direction, when the inner ring is actuated to move relative to the outer ring towards the middle shaft, the middle shaft is actuated to move away from the first inner wall in an unlocking way by overcoming the force applied by the first force application part through the first shaft end so as to enable the elastic energy storage part to store elastic potential energy; when the outer ring is actuated to move relative to the inner ring towards the sleeve, the sleeve is actuated to be unlocked to move away from the first inner wall through the first sleeve end so that the elastic energy storage element releases the stored elastic potential energy.

Through the arrangement, when the vehicle brakes, the automatic energy storage and release device moves towards the middle shaft relative to the outer ring through the inner ring of the force transmission clutch and applies force to the first shaft end of the middle shaft, so that the second shaft end of the middle shaft is separated from the first inner wall of the friction force switcher, the middle shaft is unlocked and rotated, the elastic energy storage piece is driven to be tightened, and inertial kinetic energy generated during vehicle braking is converted into elastic potential energy and stored; when the vehicle is braked and started again, the inner ring of the force transmission clutch is separated from the middle shaft, meanwhile, the outer ring moves towards the sleeve and applies force to the first sleeve end of the sleeve, so that the second sleeve end of the sleeve is separated from the first inner wall of the friction force switcher, the sleeve is unlocked, the elastic energy storage piece releases elastic potential energy, the sleeve drives the force transmission clutch to rotate, and the elastic potential energy stored during braking is converted into kinetic energy to drive the vehicle to move forwards. The automatic energy storage and release device uses the elastic part as an energy storage component and is combined with the force transmission clutch as a force transmission component for storing and releasing energy, so that the automatic energy storage and release device has the advantages of simple structure and high energy recovery efficiency, can store a large amount of energy and realizes long-time storage.

In the preferred technical scheme of the automatic energy storage and release device, a sleeve magnetic part is arranged at the second sleeve end, and a middle shaft magnetic part is arranged at the second shaft end; the first force application part and the second force application part are respectively a first magnet and a second magnet, magnetic repulsion force is generated between the first magnet and the middle shaft magnetic part so as to enable the second shaft end to be in locking and abutted against the first inner wall, magnetic repulsion force is generated between the second magnet and the sleeve magnetic part so as to enable the second sleeve end to be in locking and abutted against the first inner wall, and the first magnet and the second magnet are respectively fixed on a second inner wall, opposite to the first inner wall, of the cavity through elastic parts. Through the arrangement, the second shaft end and the second sleeve end can move in the cavity to control the locking or unlocking of the sleeve and the middle shaft, and certain gaps exist between the second shaft end and the second magnet and between the second sleeve end and the first magnet due to magnetic repulsion, so that the rotating friction force generated by the middle shaft or the sleeve in contact with the inside of the friction force switcher during unlocking and rotating is reduced, the energy loss is reduced, and the energy utilization rate is improved.

In a preferred embodiment of the above automatic energy storing and releasing device, the cavity has a gradually decreasing cross section in a direction extending towards the first inner wall, and the second shaft end and the second sleeve end each have a gradually decreasing cross section matching the cross section of the cavity, respectively. Through the arrangement, the area of the contact surface between the second shaft end and the inner wall of the friction force switcher and the area of the contact surface between the second sleeve end and the inner wall of the friction force switcher are increased, so that when the middle shaft or the sleeve is locked, the static friction force between the middle shaft or the sleeve and the inner wall of the friction force switcher is increased, and the locking firmness is ensured.

In a preferred embodiment of the above automatic energy storing and releasing device, the cavity includes a first cavity and a second cavity separated from each other, the second cavity surrounds the first cavity, the first force applying member and the second shaft end are located in the first cavity, and the second force applying member and the second sleeve end are located in the second cavity. Through foretell setting, can separate first application of force spare and second application of force spare, be favorable to avoiding the two to take place to interfere and then influence the life of part.

In a preferred technical scheme of the automatic energy storage and release device, the elastic energy storage piece is an elastic steel sheet coil. Through the arrangement, the conversion between kinetic energy and elastic potential energy can be realized, and the elastic steel has high tensile strength, high elastic limit and high fatigue strength, so that the device is simplified, the high efficiency of energy recovery is ensured, and the large amount of potential energy storage and long-time energy storage are realized.

In a preferred embodiment of the above automatic energy storing and releasing device, a plurality of cylindrical rollers are arranged between the outer ring and the inner ring along a circumferential direction, the cylindrical rollers are evenly spaced from each other, each roller extends along a common center line of the outer ring and the inner ring, and a plurality of semi-cylindrical grooves are formed on an inner wall of the outer ring and an outer wall of the inner ring respectively, the semi-cylindrical grooves facing each other and being used for accommodating each roller. Through the arrangement, the outer ring and the inner ring of the force transmission clutch can keep coaxial rotation at the same angle, and the rollers are favorable for reducing the relative friction between the outer ring and the inner ring, so that the energy loss is reduced.

In a preferred embodiment of the above automatic energy storing and releasing device, the first shaft end has an enlarged diameter portion having a diameter larger than that of the middle shaft. Through the arrangement, the contact area between the middle shaft and the inner ring can be increased, and the middle shaft is favorably pushed to unlock the middle shaft in the friction force switcher.

In a preferred embodiment of the above automatic energy storage and release device, the sleeve is made of a magnetic material. Through the arrangement, the magnetic material arranged on the second sleeve end of the sleeve is omitted, and the integral structure is further simplified.

In a preferred embodiment of the above automatic energy storing and releasing device, the central shaft is made of a magnetic material. Through the arrangement, a magnetic material additionally arranged on the second shaft end of the middle shaft is omitted, and the integral structure is further simplified.

In order to solve the above-mentioned problems in the prior art, i.e. to solve the technical problem in the prior art that the energy storage and release device cannot simultaneously ensure high efficiency, large storage capacity and long-term energy storage, the present invention also provides a vehicle, comprising: an engine clutch; according to the automatic energy storing and releasing device, an inner ring of a force transmission clutch of the automatic energy storing and releasing device is connected with an engine clutch through a speed changing device; and a control device configured to actuate the inner race to unlock the bottom bracket axle when the engine clutch is braked such that braking kinetic energy is converted into elastic potential energy of an elastic energy storage member, and to actuate the outer race of the force transmitting clutch to unlock the sleeve when the vehicle is started such that elastic potential energy of the elastic energy storage member is converted into kinetic energy to drive the vehicle. Through the arrangement, the vehicle can control the inner ring and the outer ring of the force transmission clutch through the control device, so that the braking kinetic energy can be converted into the elastic potential energy and stored when the vehicle is braked, and the elastic potential energy is converted into the kinetic energy to drive the vehicle when the vehicle is started, thereby being beneficial to the efficient recovery and reutilization of energy.

In a preferable aspect of the vehicle described above, the control device includes an energizable electromagnet configured such that when the engine clutch is braked, the electromagnet is energized and applies a magnetic repulsive force to the inner race to unlock the center shaft, and when the vehicle is started, the electromagnet is energized and applies a magnetic repulsive force to the outer race to unlock the sleeve. Electromagnetic control has advantages such as accurate, quick, convenient.

In a preferred embodiment of the vehicle, the control means comprises an actuator lever and a motor which drives the actuator lever, the motor being energised to drive the actuator lever to unlock the bottom bracket axle when the engine clutch is braked and to drive the actuator lever to unlock the sleeve when the vehicle is started. The motor control has the advantages of high working efficiency, reliable operation, simple structure, low cost and the like.

Scheme 1. an automatic energy storage and release device, characterized by, the automatic energy storage and release device includes:

a bottom bracket having opposing first and second axial ends;

a sleeve movably fitted over the bottom bracket axle and having first and second opposite sleeve ends;

an elastic energy storage member received within the sleeve and having a first end fixed to the bottom bracket axle and a second end fixed to the sleeve;

a friction force switch including a housing and first and second force applying members disposed within a cavity of the housing, the second shaft end and the second sleeve end rotatably extending into the cavity, the first force applying member applying a force to the second shaft end to lockingly abut the second shaft end against a first interior wall of the cavity and the second force applying member applying a force to the second sleeve end to lockingly abut the second sleeve end against the first interior wall of the cavity; and

a force transfer clutch having radially and synchronously rotating inner and outer races relatively movable in an axial direction, the inner race being actuated to move relative to the outer race toward the central axle by the first axial end urging the central axle to unlatch the force from the first inner wall against the force exerted by the first force application member to cause the elastic energy storage member to store elastic potential energy; when the outer ring is actuated to move relative to the inner ring towards the sleeve, the sleeve is actuated to be unlocked to move away from the first inner wall through the first sleeve end so that the elastic energy storage element releases the stored elastic potential energy.

Scheme 2. the automatic energy storage and release device according to scheme 1,

a sleeve magnetic part is arranged on the second sleeve end, and a middle shaft magnetic part is arranged on the second shaft end;

the first force application member and the second force application member are respectively a first magnet and a second magnet, magnetic repulsion force is generated between the first magnet and the middle shaft magnetic member to enable the second shaft end to be in locking and abutting contact with the first inner wall, magnetic repulsion force is generated between the second magnet and the sleeve magnetic member to enable the second sleeve end to be in locking and abutting contact with the first inner wall,

the first magnet and the second magnet are fixed on a second inner wall of the cavity, opposite to the first inner wall, through elastic pieces respectively.

Solution 3. the automatic energy storing and releasing device according to solution 2, characterized in that said cavity has a gradually decreasing cross section in a direction extending towards said first inner wall, and said second axial end and said second sleeve end each have a gradually decreasing cross section matching said cross section of said cavity, respectively.

Scheme 4. the automatic energy storage and release device of any of claims 1-3, wherein the cavity comprises a first cavity and a second cavity spaced apart from each other, the second cavity surrounding the first cavity, the first force applying member and the second shaft end being located in the first cavity, and the second force applying member and the second sleeve end being located in the second cavity.

Scheme 5. the automatic energy storage and release device of scheme 1, characterized by, the elasticity energy storage spare is the elasticity steel sheet book.

The automatic energy storing and releasing device of claim 1, wherein a plurality of cylindrical rollers are arranged between the outer ring and the inner ring along a circumferential direction, the cylindrical rollers being uniformly spaced apart from each other, each roller extending along a common center line of the outer ring and the inner ring, and a plurality of semi-cylindrical grooves are formed on an inner wall of the outer ring and an outer wall of the inner ring, respectively, to be opposite to each other, for accommodating each roller.

The automatic energy storing and releasing device of claim 1, wherein said first axial end has an enlarged diameter portion having a diameter greater than a diameter of said central shaft.

The automatic energy storage and release device of claim 1, wherein the sleeve is made of a magnetic material.

The automatic energy storage and release device according to claim 1, wherein the central shaft is made of a magnetic material.

A vehicle, characterized in that the vehicle comprises:

an engine clutch;

the automatic energy storing and releasing device according to any one of claims 1 to 9, wherein an inner ring of a force transmission clutch of the automatic energy storing and releasing device is connected with the engine clutch through a speed change device; and

a control device configured to actuate the inner race to unlock the bottom bracket axle when the engine clutch is braked such that braking kinetic energy is converted into elastic potential energy of an elastic energy storage member, and to actuate the outer race of the force transmitting clutch to unlock the sleeve when the vehicle is started such that elastic potential energy of the elastic energy storage member is converted into kinetic energy to drive the vehicle.

The vehicle of claim 10, wherein the control device includes an energizable electromagnet configured to be energized and apply a magnetic repulsion force to the inner race to unlock the bottom bracket axle when the engine clutch is braked, and to be energized and apply a magnetic repulsion force to the outer race to unlock the sleeve when the vehicle is started.

The vehicle of claim 10, wherein the control includes an actuator lever and a motor that drives the actuator lever, the motor being energized to drive the actuator lever to unlock the bottom bracket axle when the engine clutch is braked, and the motor being energized to drive the actuator lever to unlock the sleeve when the vehicle is started.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of an embodiment of an automatic energy storage and release device of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of the automatic energy storage and release device of the present invention taken along section line A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of an embodiment of a center shaft in the automatic energy storage and release device of the present invention;

FIG. 4 is a schematic structural view of an embodiment of a sleeve in the automatic energy storing and releasing device of the present invention;

FIG. 5 is a schematic structural view of an embodiment of the elastic energy storage member in the automatic energy storage and release device of the present invention;

FIG. 6 is a schematic diagram of an embodiment of a friction force switch of the automatic energy storage and release device of the present invention, taken along a central axis;

FIG. 7 is a schematic structural view of an embodiment of the first and second force applying members of the dynamic energy storage and release device of the present invention;

FIG. 8 is a cross-sectional schematic view of an embodiment of the force-transmitting clutch of the automatic energy storage and release device of the present invention taken along section line B-B of FIG. 2;

FIG. 9 is an exploded view of an embodiment of a force transfer clutch in the automatic energy storage and release device of the present invention;

fig. 10 is a connection diagram of an automatic energy storing and releasing device in an embodiment of the vehicle of the invention.

List of reference numerals:

1. an automatic energy storage and release device; 10. a middle shaft; 11. a first shaft end; 111. a diameter-enlarging portion; 12. a second shaft end; 121. a middle shaft braking part; 122. the middle shaft brakes the inclined plane; 123. a middle shaft magnetic part; 13. a bottom bracket main body; 20. a sleeve; 21. a first sleeve end; 22. a second sleeve end; 221. a sleeve braking portion; 222. the sleeve brakes the inclined plane; 223. a sleeve magnetic member; 23. a sleeve through hole; 24. a sleeve body; 241. a sleeve cavity; 25. a connecting portion; 30. an elastic energy storage member; 31. a first end; 32. a second end; 40. a friction force switcher; 41. a housing; 42. a first cavity; 43. a second cavity; 44. a first force application member; 441. a force application member through hole; 45. a second force applying member; 46. a spring; 47. a first inner wall; 471. a first braking surface; 472. a second braking surface; 48. a second inner wall; 49. a switch through hole; 50. a force transfer clutch; 51. an inner ring; 511. an inner ring groove; 52. an outer ring; 521. an outer ring groove; 53. a roller; 6. an engine clutch; 7. a speed change gear set.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to solve the technical problem that the energy storage and release device in the prior art cannot simultaneously ensure high efficiency, large storage capacity and long-term energy storage, the invention provides an automatic energy storage and release device 1. The automatic energy storing and releasing device 1 comprises a central shaft 10 having opposite first and second shaft ends 11, 12; a sleeve 20 movably fitted over said bottom bracket 10 and having opposite first and second sleeve ends 21 and 22; an elastic energy storage member 30 housed inside said sleeve 20 and having a first end 31 fixed to said bottom bracket 10 and a second end 32 fixed to said sleeve 20; a friction force switch 40 comprising a housing 41 and a first force applying member 44 and a second force applying member 45 arranged within a cavity of the housing 41, the second shaft end 12 and the second sleeve end 22 rotatably extending into the cavity, the first force applying member 44 applying a force to the second shaft end 12 to lock the second shaft end 12 against a first inner wall 47 of the cavity, and the second force applying member 45 applying a force to the second sleeve end 22 to lock the second sleeve end 22 against the first inner wall 47 of the cavity; and a force-transmitting clutch 50 having an inner ring 51 and an outer ring 52 which rotate synchronously in a radial direction and are relatively movable in an axial direction, wherein when the inner ring 51 is actuated to move relative to the outer ring 52 toward the middle shaft 10, the middle shaft 10 is actuated to move away from the first inner wall 47 in an unlocking manner against the force applied by the first force application member 44 by the first shaft end 11 so that the elastic energy storage member 30 stores elastic potential energy, and when the outer ring 52 is actuated to move toward the sleeve 20 by the inner ring 51, the sleeve 20 is actuated to move away from the first inner wall 47 in an unlocking manner by the first sleeve end 21 so that the elastic energy storage member 30 releases the stored elastic potential energy.

FIG. 1 is a schematic structural diagram of an embodiment of an automatic energy storage and release device of the present invention; fig. 2 is a schematic cross-sectional view of an embodiment of the automatic energy storage and release device of the present invention taken along section line a-a of fig. 1. As shown in fig. 1 and 2, in one or more embodiments, the automatic energy storing and releasing device 1 of the present invention comprises: a bottom bracket 10, a sleeve 20, an elastic energy storage element 30, a friction force switch 40 and a force transmission clutch 50.

Fig. 3 is a schematic structural diagram of an embodiment of a middle shaft in the automatic energy storing and releasing device of the invention. As shown in FIG. 3, in one or more implementations, the bottom bracket 10 includes a bottom bracket body 13 and first and second axle ends 11 and 12 located at opposite ends of the bottom bracket body 13. In one or more embodiments, the bottom bracket body 13 is cylindrical. As shown in FIG. 3, the first axle end 11 is located on an opposite left side of the bottom bracket body 13 from the illustration. The first axial end 11 has an enlarged diameter portion 111. The enlarged diameter portion 111 is a disk having a diameter larger than that of the bottom bracket body 13. In an alternative embodiment, enlarged diameter portion 111 may be eliminated. As shown in FIG. 3, the second axle end 12 is located on the opposite right side of the bottom bracket body 13 from the illustration. The second axial end 12 has a bottom bracket stop 121. The bottom bracket axle stopper 121 has a truncated cone structure with a cross section gradually decreasing in a direction toward the first axle end 11, and a central axis of the bottom bracket axle stopper 121 coincides with a central axis of the bottom bracket axle main body 13. The bottom bracket brake 121 has a bottom bracket brake ramp 122. The medial axis braking ramp 122 is the tapered side of the truncated cone. In alternative embodiments, the bottom bracket axle stopper 121 may be a frustum-shaped structure, a disk-shaped structure (i.e., a cylinder with a smaller height), a cube-shaped structure, etc., as long as the bottom bracket axle stopper 121 can be ensured to rotate with the bottom bracket axle 10 in the first cavity 42 of the friction force switch 40 and can contact with the first inner wall 47 of the friction force switch 40 to cooperate and stop the bottom bracket axle 10. A bottom bracket magnetic member 123 is provided on the bottom bracket stopper 121. The bottom axis magnetic member 123 is fixed to the bottom surface of the truncated cone, i.e., to the illustrated right side surface of the stopper portion 121. In an alternative embodiment, bottom bracket brake 121 may be made of a magnetic material and middle bracket magnetic element 123 may be eliminated. Alternatively, the entire bottom bracket 10 can also be made of a magnetic material.

Fig. 4 is a schematic structural view of an embodiment of a sleeve in the automatic energy storage and release device of the present invention. As shown in FIG. 4, in one or more embodiments, the sleeve 20 includes a sleeve body 24 and first and second sleeve ends 21, 22 at opposite ends of the sleeve body 24. The cartridge body 24 has a cartridge cavity 241 (see fig. 2). The first sleeve end 21 is located on the opposite left side of the sleeve body 24 from that shown. The second sleeve end 22 is located on the opposite right side of the sleeve body 24 from that shown. The second sleeve end 22 comprises a sleeve stop portion 221 and a connecting portion 25. The connecting portion 25 is a hollow cylinder having a diameter smaller than that of the sleeve main body 24, i.e., a cylindrical shape. The connecting portion 25 is connected to the sleeve body 24 and extends outwardly from the sleeve body 24. The sleeve stopper portion 221 is provided on the illustrated right end of the connecting portion 25 and connected to the connecting portion 25. The sleeve stopper 221 extends rightward from the connection portion 25, and its cross section gradually increases in a direction from left to right. The sleeve stopper 221 has sleeve stopper slopes 222 on both inner and outer sides thereof. In alternative embodiments, the cross-section of the sleeve stop 221 may also be constant and may be the same as the cross-section of the connection 25 or larger than the cross-section of the connection 25, as long as it is ensured that it can cooperate with the friction force switch 40 to stop the sleeve 20. A sleeve magnetic member 223 is provided on the right end surface of the sleeve stopper 221. In an alternative embodiment, it is also possible to make the sleeve stopper 221 of a magnetic material and to eliminate the sleeve magnetic member 223. Alternatively, it is also possible to make the entire sleeve 20 of magnetic material.

The sleeve 20 also has a sleeve through hole 23. The sleeve through hole 23 extends through the sleeve 20 and has a diameter slightly larger than the diameter of the bottom bracket body 13 to ensure that the bottom bracket 10 can pass through the sleeve through hole 23 and protrude from the sleeve 20.

Fig. 5 is a schematic structural diagram of an embodiment of the elastic energy storage element in the automatic energy storage and release device of the invention. In one or more embodiments, as shown in fig. 5, the elastic energy storage member 30 is a coiled sheet of elastic steel. The elastic energy storage member 30 is received in the sleeve cavity 241. The elastic energy storage member 30 has a first end 31 and a second end 32. The first end 31 is an end wound inside, and the second end 32 is an end wound on the outermost side. The first end 31 is secured to the bottom bracket body 13 and the second end 32 is secured to the inner wall of the sleeve body 24, such as by welding or other suitable connection, to form a fixed connection with the bottom bracket 10 and the sleeve 20, respectively.

FIG. 6 is a schematic diagram of an embodiment of a friction force switch of the automatic energy storage and release device of the present invention, taken along a central axis; fig. 7 is a schematic structural diagram of an embodiment of the first and second force applying members in the dynamic energy storage and release device of the invention. As shown in fig. 6 and 7, in one or more embodiments, the friction force switch 40 includes a housing 41, a first force applying member 44, a second force applying member 45, and a spring 46. The housing 41 has a first cavity 42, a second cavity 43, opposing first and second

interior walls

47, 48 therein. The bottom bracket stop 121 is received in the first cavity 42 and the sleeve stop 221 is received in the second cavity 43. The second cavity 43 surrounds the first cavity 42, and a partition wall (not shown) connected to the housing 41 is provided in the first cavity 42 and the second cavity 43. In an alternative embodiment, it is also possible to eliminate the separating wall between the first cavity 42 and the second cavity 43, i.e. to provide only one cavity in the housing 41. Based on the orientation shown in fig. 6, both the first cavity 42 and the second cavity 43 have a cross-sectional area that decreases from right to left. In an alternative embodiment, the first cavity 42 may be a constant cross-sectional configuration. Alternatively, the second cavity 43 may be a structure with a constant cross section.

As shown in fig. 6, the first inner wall 47 is an illustrated left side wall of the first and

second cavities

42 and 43, and the second inner wall 48 is an illustrated right side wall of the first and

second cavities

42 and 43. The first inner wall 47 includes a first braking surface 471 and a second braking surface 472. Since the first and

second cavities

42 and 43 have a structure in which the cross section is uniformly varied, the first and second braking surfaces 471 and 472 are both inclined surfaces, and the first braking surface 471 is located in the first cavity 42 and the second braking surface 472 is located in the second cavity 43.

In one or more embodiments, the first force applying member 44 and the second force applying member 45 are magnets. The first force application member 44 is disposed in the first cavity 42, and the first force application member 44 is connected to a second inner wall 48 of the first cavity 42 by a spring 46. Under the elastic force of the spring 46, the first force applying member 44 applies a pushing force to the bottom bracket axle stopper 121 and makes the middle axle stopper slope 122 abut against the first stopper surface 471, thereby locking the bottom bracket axle. The second force application member 45 is disposed in the second cavity 43, and the second force application member 45 is connected to the second inner wall 48 by a spring 46. Under the elastic force of the spring 46, the second force application member 45 applies a pushing force to the sleeve stopper portion 221 and makes the sleeve stopper slope 222 thereof abut against the second stopper surface 472, thereby locking the sleeve 20. As shown in fig. 7, the first force application member 44 is of a circular ring structure, and the first force application member 44 has a force application member through hole 441. The second force application member 45 has a circular ring structure, and the inner ring diameter of the second force application member 45 is larger than the outer ring diameter of the first force application member 44. In alternative embodiments, the first force application member 44 and the second force application member 45 may be square rings or any other suitable ring shape.

As shown in fig. 6, the friction force switch 40 also has a switch through hole 49. The diameter of the switch through hole 49 is the same as that of the urging member through hole 441. In alternative embodiments, the diameter of the switch through hole 49 and the diameter of the force applying member through hole 441 may be different, as long as it is ensured that the bottom bracket 10 can pass through and rotate in the switch through hole 49 and the force applying member through hole 441.

FIG. 8 is a cross-sectional view of an embodiment of a force transfer clutch in the automatic energy storing and releasing device of the present invention taken along section line B-B of FIG. 2; fig. 9 is an exploded view of an embodiment of the force transfer clutch in the automatic energy storage and release device of the present invention. As shown in fig. 8 and 9, in one or more embodiments, the force transfer clutch 50 includes an inner race 51, an outer race 52, and rollers 53. A plurality of inner ring grooves 511 are provided on the outer periphery of the inner ring 51. The inner ring grooves 511 are uniformly distributed along the outer periphery of the inner ring 51. A plurality of outer ring recesses 521 are provided on the inner periphery of the outer ring 52. Outer race groove 521 is evenly distributed along the inner periphery of outer race 52. As shown in fig. 8, the cross-section of the inner ring groove 511 and the outer ring groove 521 is a semicircle with the same diameter, and a cylindrical roller 53 with a matched diameter is provided between the inner ring groove 511 and the outer ring groove 521 to ensure that the inner ring 51 and the outer ring 52 can rotate coaxially and angularly synchronously. The force-transmitting clutch 50 is located on the right side of the sleeve 20 as shown, wherein the outer race 52 is located adjacent the first sleeve end 21 of the sleeve 20 and the inner race 51 is located adjacent the enlarged diameter portion 111 of the bottom bracket axle 10.

As shown in fig. 2 to 9, the bottom bracket 10 passes through the sleeve through hole 23 of the sleeve 20, and the first shaft end 11 of the bottom bracket 10 protrudes from the right end of the sleeve through hole 23, and the enlarged diameter portion 111 on the first shaft end 11 is located outside the first sleeve end 21. The bottom bracket 10 also passes through the switch through hole 49 and the force application member through hole 441 of the friction force switch 40. The second axle end 12 of the bottom bracket 10 extends into the first cavity 42, and the bottom bracket stop 121 on the second axle end 12 is disposed between the first inner wall 47 and the first force applying member 44. The bottom bracket stop ramp 122 of the bottom bracket stop 121 mates with the first stop surface 471 on the first interior wall 47. The second sleeve end 22 of the sleeve 20 projects through the connection 25 into the second cavity 43 of the friction force switch 40. The sleeve stopper 221 of the second sleeve end 22 is disposed between the first inner wall 47 and the second biasing member 45. The sleeve stop ramp 222 of the sleeve stop 221 mates with the second stop surface 472 on the first inner wall 47.

In one or more embodiments, the vehicle of the present invention is a pure electric vehicle. In alternative embodiments, the vehicle of the present invention may also be a fuel-powered vehicle, a hybrid vehicle, or other suitable vehicle.

Fig. 10 is a connection diagram of an automatic energy storing and releasing device in an embodiment of the vehicle of the invention. As shown in fig. 10, in one or more embodiments, the vehicle includes, but is not limited to, an engine clutch 6, a CVT (continuously variable transmission), a propeller shaft, a drive axle, and an automatic energy storage and release device 1. The engine clutch 6, the CVT, the transmission shaft and the drive axle jointly form a transmission system of the vehicle. The power generated by the engine passes through the engine clutch 6, the CVT, the transmission shaft and the drive axle in sequence and is finally transmitted to the driving wheels. The automatic energy storing and releasing device 1 is connected with an engine clutch 6 through a speed change gear set 7. The vehicle also has a control device (not shown in the figure). The control device is connected with the automatic energy storing and releasing device 1 and can control the automatic energy storing and releasing device 1 to store or release energy.

In one or more embodiments, the automatic energy storage and release device 1 is in the state shown in fig. 2 when the vehicle is running normally. At this time, a certain clearance exists between the inner race 51 and the first shaft end 11, and a certain clearance exists between the outer race 52 and the first sleeve end 21. Since the first force application member 44 magnetically repels the bottom bracket magnetic member 123, the bottom bracket brake portion 121 of the bottom bracket 10 is tightly attached to the first inner wall 47 under the action of the magnetic repulsion. Specifically, the bottom bracket brake ramp 122 engages the first brake surface 471 of the friction force switch 40 such that the bottom bracket 10 is locked by the friction force switch 40 under the static friction force. Similarly, the second biasing member 45 magnetically repels the sleeve magnetic member 223, and thus the sleeve stopper 221 of the sleeve 20 is brought into close contact with the first inner wall 47 by the repulsive magnetic force. Specifically, the sleeve braking ramp 222 engages the second braking surface 472 of the friction switch 40, thereby causing the sleeve 20 to be locked by the friction switch 40 under static friction.

When the engine clutch 6 of the vehicle is braked, the electromagnet of the control device is energized and exerts a magnetic repulsion force on the inner race 51 of the force-transmitting clutch 50. The inner ring 51 moves toward the center shaft 10 by the repulsive force of the magnetic force and pushes the center shaft 10. The bottom bracket 10 is displaced by the thrust force applied by the inner race 51, and the first force-applying member 44 and the spring 46 are retracted. At this time, the bottom bracket braking inclined surface 122 is disengaged from the first braking surface 471 of the friction force switch 40, the static friction force between the bottom bracket braking inclined surface 122 and the first braking surface 471 disappears, and the bottom bracket 10 is unlocked. Inertial kinetic energy generated by vehicle braking is transmitted to the inner ring 51 through a speed changing device, such as the speed changing gear set 7, so that the inner ring 51 drives the unlocked middle shaft 10 to rotate, and the kinetic energy is transmitted to the elastic energy storage element 30 and converted into elastic potential energy to be stored. It is conceivable that a certain gap is always present between the first force application member 44 and the bottom bracket stopper 121 because there is a magnetic repulsive force between the first force application member 44 and the bottom bracket stopper 121. When the bottom bracket axle 10 rotates, the arrangement can effectively prevent the first force application member 44 from generating rotational friction with the bottom bracket axle brake part 121 to consume kinetic energy, thereby ensuring the energy recovery rate.

When the vehicle is started again, the electromagnet of the control device is energized and applies a magnetic repulsion force to the outer race 52 of the force-transmitting clutch 50. The outer race 52 moves toward the sleeve 20 under the repulsive force of the magnetic force and pushes the sleeve 20. The sleeve 20 is displaced by the urging force of the outer race 52, and the second urging member 45 and the spring 46 are retracted. At this time, the sleeve braking inclined surface 222 is disengaged from the second braking surface 472 of the friction force switch 40, the static friction force between the sleeve braking inclined surface 222 and the second braking surface 472 disappears, the sleeve 20 is unlocked, and the elastic energy storage member 30 releases the elastic potential energy and rotates the sleeve 20. The sleeve 20 rotates the outer race 52 of the power transmission clutch 50, and the outer race 52 transfers kinetic energy to the driveline through the gearset 7 to assist in driving the vehicle forward. Since there is a magnetic repulsive force between the second biasing member 45 and the sleeve stopper portion 221, a certain gap is always present between the second biasing member 45 and the sleeve stopper portion 221. When the sleeve 20 rotates, the arrangement can effectively prevent the second force application member 45 from generating rotational friction with the sleeve braking portion 221 to consume kinetic energy, thereby ensuring effective output of energy.

In an alternative embodiment, the control means comprises an actuating lever and a motor. When the engine clutch 6 is braked, the motor is energized and drives the actuating lever. The actuating rod controls the inner ring 51 of the force transmission clutch 50 to apply external force to the middle shaft 10 so as to unlock the middle shaft 10, thereby converting the braking kinetic energy into elastic potential energy and storing the elastic potential energy in the elastic energy storage element 30; when the vehicle is started again, the motor drives the actuating rod to control the outer ring 52 to apply an external force to the sleeve 20, so that the sleeve 20 is unlocked, and the elastic potential energy stored by the elastic energy storage member 30 is released and converted into kinetic energy to drive the vehicle to advance.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. An automatic energy storage and release device, comprising:

a bottom bracket having opposite first and second axial ends;

a force transfer clutch having radially and synchronously rotating inner and outer races relatively movable in an axial direction, the inner race being actuated to move relative to the outer race toward the central axle by the first axial end urging the central axle to unlatch the force from the first inner wall against the force exerted by the first force application member to cause the elastic energy storage member to store elastic potential energy; when the outer ring is actuated to move relative to the inner ring toward the sleeve, the sleeve is urged by the first sleeve end to move away from the first inner wall in an unlocking manner so that the elastic energy storage member releases the stored elastic potential energy.

2. The automatic energy storage and release device of claim 1,

the first force application member and the second force application member are respectively a first magnet and a second magnet, magnetic repulsion is generated between the first magnet and the middle shaft magnetic member to enable the second shaft end to be in locking and abutting contact with the first inner wall, and magnetic repulsion is generated between the second magnet and the sleeve magnetic member to enable the second sleeve end to be in locking and abutting contact with the first inner wall,

the first magnet and the second magnet are respectively fixed on a second inner wall of the cavity, opposite to the first inner wall, through elastic pieces.

3. The automatic energy storing and releasing device according to claim 2, wherein said cavity has a gradually decreasing cross-section in a direction extending towards said first inner wall, and said second axial end and said second sleeve end each have a gradually decreasing cross-section matching said cross-section of said cavity, respectively.

4. The automatic energy storage and release device according to any of claims 1-3, wherein said cavity comprises a first cavity and a second cavity spaced apart from each other, said second cavity surrounding said first cavity, said first force applying member and said second shaft end being located within said first cavity, and said second force applying member and said second sleeve end being located within said second cavity.

5. The automatic energy storage and release device of claim 1, wherein the elastic energy storage member is a coil of elastic steel sheet.

6. The automatic energy storing and releasing device according to claim 1, wherein a plurality of cylindrical rollers are arranged between the outer ring and the inner ring in a circumferential direction and are evenly spaced apart from each other, each roller extending along a common center line of the outer ring and the inner ring, and a plurality of semi-cylindrical grooves are formed on an inner wall of the outer ring and an outer wall of the inner ring, respectively, to be opposite to each other for accommodating each roller.

7. The automatic energy storage and release device of claim 1, wherein the first axial end has an enlarged diameter portion having a diameter greater than a diameter of the central axis.

8. The automatic energy storage and release device of claim 1, wherein the sleeve is made of a magnetic material.

9. The automatic energy storing and releasing device of claim 1, wherein said central shaft is made of a magnetic material.

10. A vehicle, characterized in that the vehicle comprises:

an engine clutch;

the automatic energy storage and release device of any one of claims 1 to 9, wherein the inner race of the force transmission clutch of the automatic energy storage and release device is connected to the engine clutch through a transmission; and