Automobile generator with heat dissipation function

Abstract

The application relates to the technical field of automobile generators, in particular to an automobile generator with a heat dissipation function. The automobile generator comprises a machine shell, a temperature sensor is arranged in the machine shell, a gas supply module is arranged on one side of the machine shell, two bearings are fixedly arranged in the machine shell in a symmetrical manner, a rotor shaft is rotationally connected to the machine shell through the two bearings in the machine shell, the rotor shaft is provided with a fan located in the machine shell, the machine shell is rotationally connected to a driving shaft through a connecting frame, the driving shaft is fixedly connected with a belt pulley, and the rotor shaft and the driving shaft are jointly provided with a pneumatic clutch. The temperature sensor is used for monitoring the temperature in the machine shell, when the temperature is abnormal, the driving friction piece and the driven friction piece of the pneumatic clutch are separated, the driving shaft and the rotor shaft are disconnected, the generation of new heat is fundamentally stopped, other components in the machine shell are prevented from being damaged, and the fault range is prevented from being expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile generators, and particularly relates to an automobile generator with a heat dissipation function. BACKGROUND

[0002] An automobile generator is an important component of an electrical system of a plug-in hybrid vehicle, and is mainly used for supplying power to electrical equipment of the vehicle and charging a storage battery when an engine is running. The automobile generator comprises core components such as a rotor assembly (containing front and rear double-sealed rolling bearings), a stator, a rectifier, a voltage regulator, brushes and a brush holder, a housing, a heat dissipation device and a pulley, and the durability of the automobile generator directly affects the reliability of the electrical equipment of the vehicle.

[0003] During driving of the vehicle, the engine of the automobile drives the rotor shaft of the generator to rotate through transmission of the belt and the pulley, so as to realize conversion of mechanical energy into electrical energy. Meanwhile, a large amount of heat is generated due to electromagnetic conversion, mechanical friction and current loss during operation of the generator. At present, a heat dissipation fan is arranged in the generator housing, and the heat dissipation fan is driven to rotate by the rotor shaft, so that heat in the generator exchanges heat with the external environment through heat dissipation holes in the generator housing, thereby dissipating heat of the generator.

[0004] However, the automobile generator still has a situation of overheating in actual work. The main reasons for the overheating include blockage of the heat dissipation holes, abnormal mechanical friction, excessively high external temperature and the like, which result in that heat of the automobile generator cannot be dissipated in time, so that the generation efficiency of the generator is greater than the heat dissipation efficiency, thereby causing the temperature of the generator to be abnormal. If the above situation is not handled in time, the generator will continuously work in a high-temperature environment, thereby causing problems such as aging of insulation of the generator winding and demagnetization of the permanent magnet, and even causing the generator to burn out, which directly affects the power performance and safety of the vehicle. SUMMARY

[0005] In order to overcome the shortcomings in the background art, the present application provides an automobile generator with a heat dissipation function.

[0006] The technical implementation of the present application is: a car generator with heat dissipation function, comprising a machine shell, a temperature sensor is arranged in the machine shell, a gas supply module is arranged on one side of the machine shell, two bearings symmetrically distributed are fixedly connected in the machine shell, a rotor shaft is rotatably connected to the machine shell through the two bearings in the machine shell, the rotor shaft is provided with a fan located in the machine shell, the machine shell is rotatably connected with a drive shaft through a connecting frame, the drive shaft is fixedly connected with a belt pulley, the rotor shaft and the drive shaft are commonly provided with a pneumatic clutch, the pneumatic clutch is used to change the connection relationship between the rotor shaft and the drive shaft, the pneumatic clutch is communicated with the gas supply module, a locking mechanism is arranged on the machine shell, and the locking mechanism is used to lock and fix the rotor shaft when the rotor shaft is disconnected with the drive shaft.

[0007] Further, the locking mechanism comprises a fixed shell, a storage shell, a plurality of locking blocks, a plurality of extrusion blocks and an air bag, the fixed shell is fixedly connected to the machine shell, the storage shell is rotatably connected to the inside of the fixed shell, the rotor shaft passes through the storage shell and is rotatably connected thereto, a plurality of locking blocks are rotatably connected to the inside of the storage shell, torsional springs are fixedly connected between the locking blocks and the storage shell, the locking blocks are used to increase the resistance of the rotor shaft rotation, the number of extrusion blocks is the same as that of the locking blocks, the extrusion blocks are fixedly connected to the fixed shell, the storage shell is provided with through holes which are the same in number as the extrusion blocks and allow the extrusion blocks to slide, the extrusion blocks are used to extrude the adjacent locking blocks, the air bag is fixedly connected in the fixed shell, the air bag is fixedly connected with the storage shell, and the air bag is communicated with the gas supply module through a hose.

[0008] Further, the locking block is provided with an elastic part, and the elastic part of the locking block is provided with a plurality of inclined grooves.

[0009] Further, the side of the locking block away from the center axis of the rotor shaft is provided with an arc surface, and the center of the arc surface is not on the center axis of the rotor shaft.

[0010] Further, there is a gap between the elastic part on the locking block and the rotor shaft.

[0011] Further, it also comprises a one-way gear, the one-way gear is arranged on the fan, the one-way gear is located in the machine shell, the machine shell is rotatably connected with a transmission rod, the drive shaft is rotatably connected with a second fixed ring, the second fixed ring is fixedly connected with a first gear, the transmission rod is fixedly connected with a second gear and a third gear on both sides, wherein the second gear is engaged with the one-way gear, and the third gear is engaged with the first gear.

[0012] Further, the connecting assembly is used for changing the transmission relationship between the driving shaft and the fan, the connecting assembly comprises symmetrically distributed first plugs and a first fixing ring, the rotor shaft is provided with first storage grooves, the symmetrically distributed first plugs are sealingly and slidably connected in the first storage grooves, first elastic members are arranged between the first plugs and the rotor shaft, the first fixing ring is rotationally connected to the rotor shaft, the fan is fixed to the first fixing ring, the one-way gear is rotationally connected to the first fixing ring, the first fixing ring is located in the shell, and the first fixing ring is provided with symmetrically distributed limiting grooves for the symmetrically adjacent first plugs.

[0013] Further, the connecting assembly further comprises symmetrically distributed second plugs, the driving shaft is provided with second storage grooves, the symmetrically distributed second plugs are sealingly and slidably connected in the second storage grooves, second elastic members are arranged between the second plugs and the driving shaft, the second fixing ring is provided with symmetrically distributed protrusions for limiting the symmetrically adjacent second plugs, the rotor shaft is provided with a first driving assembly for changing the positions of the symmetrically distributed first plugs, and the driving shaft is provided with a second driving assembly for changing the positions of the symmetrically distributed second plugs.

[0014] Further, the first driving assembly comprises a first mounting ring and a first gas injection shell, the first mounting ring is fixed to the rotor shaft, the first mounting ring is located outside the shell, the first gas injection shell is fixed to the shell, the first gas injection shell is in communication with a gas supply module through a hose, the first gas injection shell is sealingly and rotationally connected to the first mounting ring, the first mounting ring and the rotor shaft are jointly provided with symmetrically distributed first gas injection holes, and the symmetrically distributed first gas injection holes are in communication with the first storage grooves.

[0015] Further, the second driving assembly comprises a second mounting ring and a second gas injection shell, the second mounting ring is fixed to the driving shaft, the second gas injection shell is fixed to the connecting frame of the shell, the second gas injection shell is in communication with the gas supply module through a hose, the second gas injection shell is sealingly and rotationally connected to the second mounting ring, the second mounting ring and the driving shaft are jointly provided with a second gas injection hole, and the second gas injection hole is in communication with the second storage groove.

[0016] Compared with the prior art, the present application has the following advantages: the temperature inside the shell is monitored by the temperature sensor, when the temperature is abnormal, the driving friction plate and the driven friction plate of the pneumatic clutch are separated, the driving shaft and the rotor shaft are disconnected, the generation of new heat is fundamentally stopped, other components in the shell are prevented from being damaged, and the scope of failure is avoided from being expanded.

[0017] The rotor shaft is clamped and fixed by the locking block, the time of the rotor shaft rotating due to inertia after being separated from the driving shaft is shortened, and the generation of residual heat is reduced.

[0018] After the rotor shaft is disconnected from the driving shaft, the fan is continuously rotated by the driving shaft, so that the fan continues to dissipate heat in the interior of the casing after the rotor shaft stops rotating, the residual heat in the interior of the casing is rapidly dissipated, and the influence of the residual heat on the parts in the casing is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic view of the present application;

[0020] Figure 2 It is a perspective structural sectional view of the casing of the present application;

[0021] Figure 3 It is a perspective structural schematic view of the rotor shaft and the fixed casing of the present application;

[0022] Figure 4 It is a perspective structural schematic view of the rotor shaft and the fixed casing of the present application;

[0023] Figure 5 It is a perspective structural sectional view of the fixed casing and the storage casing of the present application;

[0024] Figure 6 It is an exploded perspective structural view of the locking block and the extruding block of the present application;

[0025] Figure 7 It is a perspective structural sectional view of the rotor shaft of the present application;

[0026] Figure 8 It is a perspective structural sectional view of the second gas injection casing of the present application;

[0027] Figure 9 It is a perspective structural sectional view of the driving shaft of the present application;

[0028] Figure 10 It is a perspective structural sectional view of the second fixed ring of the present application.

[0029] The marks of the components in the drawings are as follows: 1: casing, 2: rotor shaft, 3: fan, 4: driving shaft, 5: pneumatic clutch, 6: fixed casing, 7: storage casing, 8: locking block, 9: extruding block, 10: air bag, 11: one-way gear, 12: transmission rod, 13: first gear, 14: second gear, 15: third gear, 16: first storage groove, 17: first bolt, 18: first fixed ring, 19: second storage groove, 20: second bolt, 21: second fixed ring, 22: first mounting ring, 23: first gas injection casing, 24: first gas injection hole, 25: second mounting ring, 26: second gas injection casing, 27: second gas injection hole. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] This embodiment discloses an automotive generator with a heat dissipation function, which is used to change the operating state of the generator when it overheats during normal use.

[0033] like Figures 1-3 As shown, this automotive generator with heat dissipation function includes a housing 1. A temperature sensor is installed inside the housing 1. These temperature sensors are existing devices and are not shown in the figure. The temperature sensor is electrically connected to the vehicle's control terminal and is used to detect the temperature inside the housing 1. The housing 1 contains components such as a stator, electrical connection devices, and protection devices (specific components are not shown in detail in the figure). An air supply module is located on one side of the housing 1. This air supply module is an existing device and is not shown in the figure. It is electrically connected to the vehicle's control terminal. Two bearings, symmetrically distributed on both sides, are fixedly mounted inside the housing 1. A rotor shaft 2 is rotatably connected to the housing 1 through these two bearings. The outer rings of both bearings are fixedly connected to the housing 1. The inner rings of the two bearings are in contact with the rotor shaft 2. The rotor shaft 2 is equipped with a fan 3 located inside the housing 1. In this embodiment, the fan 3 is fixedly connected to the rotor shaft 2. The housing 1 is rotatably connected to the drive shaft 4 through a connecting bracket. The drive shaft 4 is located on the right side of the rotor shaft 2. The drive shaft 4 is fixedly connected to a pulley, which is connected to the car engine through a belt. The rotor shaft 2 and the drive shaft 4 are jointly equipped with a pneumatic clutch 5. The pneumatic clutch 5 is an existing device with an active friction plate and a driven friction plate. The pneumatic clutch 5 is used to change the connection relationship between the rotor shaft 2 and the drive shaft 4. The pneumatic clutch 5 is connected to the air supply module. The housing 1 is equipped with a locking mechanism, which is used to lock and fix the rotor shaft 2 when the rotor shaft 2 is disconnected from the drive shaft 4.

[0034] The specific workflow of the above scheme is as follows:

[0035] When the device is needed to be used, the pulley on the driving shaft 4 is connected with the output shaft of the engine of the automobile through the belt, then during the normal driving of the automobile, the driving shaft 4 is rotated by the engine through the belt and the pulley, and the rotor shaft 2 is rotated by the driving shaft 4 through the pneumatic clutch 5, the rotor on the rotor shaft 2 is rotated, the purpose of generating electricity is realized, and the fan 3 is rotated by the rotor shaft 2, the fan 3 is used for heat dissipation of the casing 1 and all the parts inside the casing 1.

[0036] When the automobile is normally driven, the temperature sensor on the casing 1 monitors the internal temperature in real time. If the temperature is detected to be abnormal, it indicates that the generator has a risk of heat dissipation failure, at this time the generator is not suitable to continue to work (continue to work may be burned), then the control terminal of the automobile (hereinafter collectively referred to as the control terminal) starts the air supply device, the air in the pneumatic clutch 5 is extracted by the air supply device, the driving friction plate and the driven friction plate of the pneumatic clutch 5 are separated, the driving shaft 4 and the rotor shaft 2 are disconnected, the rotor shaft 2 no longer rotates, the device no longer continues to generate electricity, so as to fundamentally stop the generation of heat, prevent other parts in the device from being damaged, avoid the expansion of the fault range, after the device stops generating electricity, the storage battery of the automobile continues to supply power to the automobile, and a warning is given in the cab of the automobile (a warning device can be arranged on the instrument panel or other positions of the automobile), to remind the user that the device has a fault.

[0037] After the rotor shaft 2 and the driving shaft 4 are disconnected, the user can park the automobile in a safe place (such as a service area on a highway), and after parking, the device is repaired, after the repair is completed, the user can control the air supply device to work through the control terminal of the automobile, so as to transport air to the pneumatic clutch 5, so that the driving friction plate and the driven friction plate of the pneumatic clutch 5 re-contact, so that the automobile can normally generate electricity through the device during normal driving.

[0038] Embodiment 2

[0039] The embodiment discloses an automobile generator with a heat dissipation function, which is further optimized on the basis of the embodiment 1.

[0040] As Figures 3-6As shown in the drawings, the locking mechanism comprises a fixed shell 6, a storage shell 7, a plurality of locking blocks 8, a plurality of extrusion blocks 9 and an air bag 10, the fixed shell 6 is fixed to the shell 1 through a connecting piece, the storage shell 7 is rotatably connected to the inside of the fixed shell 6, the rotor shaft 2 passes through the storage shell 7 and is rotatably connected thereto, the plurality of locking blocks 8 are rotatably connected to the inside of the storage shell 7, a torsion spring is fixed between the locking block 8 and the storage shell 7 for driving the reset of the moved locking block 8, the specific number of locking blocks 8 is selected by the staff, five are shown in the drawings and mentioned in the text as an example for uniform distribution in the circumferential direction, the locking block 8 is used to increase the resistance of the rotor shaft 2 rotation, the extrusion block 9 is fixed to the fixed shell 6, five are shown in the drawings and mentioned in the text as an example for uniform distribution in the circumferential direction, the storage shell 7 is provided with five through holes, the five through holes on the storage shell 7 are respectively used for sliding of the adjacent extrusion blocks 9, the extrusion block 9 is used to extrude the adjacent locking block 8, so that the locking block 8 rotates towards the rotor shaft 2, and then the locking block 8 is attached to the rotor shaft 2, the air bag 10 is fixed in the fixed shell 6, the air bag 10 is fixed to the storage shell 7, the air bag 10 is made of elastic material, the air bag 10 is used to connect the fixed shell 6 and the storage shell 7, and simultaneously used to change the relative position of the two, the air bag 10 is communicated with the gas supply module through a hose.

[0041] As shown in the drawings, Figure 5 and Figure 6 , the locking block 8 is provided with an elastic part, the elastic part of the locking block 8 is provided with a plurality of inclined grooves, the inclined direction of the inclined groove on the locking block 8 is opposite to the rotation direction of the rotor shaft 2, both in the text and in the drawings, the clockwise rotation of the rotor shaft 2 is taken as an example (the front view of the main part is taken as the reference), when the elastic part on the locking block 8 is contacted with the rotor shaft 2 due to the extrusion of the adjacent extrusion block 9, the elastic part of the locking block 8 is extruded in the process of the rotation of the rotor shaft 2. Figure 5

[0042] As shown in the drawings, Figure 5 and Figure 6 , the side of the locking block 8 away from the central axis of the rotor shaft 2 is provided with an arc surface, and the center of the arc surface is not on the central axis of the rotor shaft 2, in the process of the counterclockwise rotation of the locking block 8 relative to the adjacent extrusion block 9, the locking block 8 is moved towards the central axis of the rotor shaft 2 due to the extrusion of the extrusion block 9.

[0043] As shown in the drawings, Figure 5 and Figure 6 , there is a gap between the elastic part on the locking block 8 and the rotor shaft 2, which reduces the resistance of the rotor shaft 2 in the normal working state.

[0044] The specific working process of the above scheme is as follows:

[0045] ​During the process of the control terminal extracting gas from the pneumatic clutch 5 via the air supply device, the control terminal controls the air supply device to deliver gas into the airbag 10, causing the airbag 10 to inflate. As the airbag 10 inflates, it compresses the storage shell 7, causing the storage shell 7 to rotate relative to the fixed shell 6 (in the opposite direction to the rotation of the rotor shaft 2). Figure 5 From the main viewpoint, the rotation is counterclockwise. The storage shell 7 drives the five locking blocks 8 to rotate synchronously, so that the five locking blocks 8 are moved by the pressure of the adjacent pressing blocks 9 during the rotation (so that the five locking blocks 8 move away from the side that is rotatably connected to the storage shell 7 and move closer to the central axis of the rotor shaft 2). The elastic parts of the five locking blocks 8 jointly clamp and fix the rotor shaft 2. At the same time, the rotor shaft 2 compresses the elastic parts of the locking blocks 8 during the rotation, increasing the resistance to the rotation of the rotor shaft 2, shortening the time of the rotor shaft 2 due to inertia after it is separated from the drive shaft 4, reducing the generation of residual heat (when the rotor rotates inertia, bearing friction and residual eddy currents will still generate a small amount of heat), reducing the risk of thermal damage and improving the reliability of the system.

[0046] After maintenance, the user controls the air supply device to extract the gas delivered to the airbag 10, causing the airbag 10 to contract to an uninflated state. At the same time, the airbag 10 drives the storage shell 7 to rotate in the opposite direction during the contraction process, thereby reducing the squeezing force of the five locking blocks 8 on the rotor shaft 2, so that the rotor shaft 2 can rotate normally.

[0047] Example 3

[0048] This embodiment discloses an automotive generator with heat dissipation function, which is further optimized based on Embodiment 2.

[0049] like Figures 1-3 As shown, it also includes a one-way gear 11, which is disposed on the fan 3 and located inside the housing 1. A transmission rod 12 is rotatably connected to the upper side of the housing 1. A second fixed ring 21 is rotatably connected to the drive shaft 4. A first gear 13 is fixedly connected to the second fixed ring 21. A second gear 14 and a third gear 15 are fixedly connected to both sides of the transmission rod 12, respectively. The second gear 14 meshes with the one-way gear 11, and the third gear 15 meshes with the first gear 13. After the drive shaft 4 is disconnected from the rotor shaft 2, it can drive the fan 3 to continue rotating through the transmission of the first gear 13, the third gear 15, the transmission rod 12, the second gear 14, and the one-way gear 11. When the rotor shaft 2 drives the fan 3 to rotate, the fan 3 cannot drive the second gear 14 to rotate through the one-way gear 11. When the drive shaft 4 drives the second gear 14 to rotate, the second gear 14 can drive the fan 3 to rotate through the one-way gear 11.

[0050] like Figure 3 , Figure 4 and Figures 7-10Also shown, the connecting assembly for changing the transmission relationship between the drive shaft 4 and the fan 3, the connecting assembly includes symmetrically distributed first plug 17 and first fixed ring 18, the rotor shaft 2 is provided with a first storage tank 16, the rotor shaft 2 is provided with a through hole communicated with the first storage tank 16, for discharging the air in the first storage tank 16, the two first plug 17 symmetrically distributed in front and back are all sealingly and slidably connected in the first storage tank 16, the first plug 17 and the rotor shaft 2 are provided with a first elastic member, the first elastic member is a tension spring, for driving the reset of the moved first plug 17, the first fixed ring 18 is rotatably connected to the rotor shaft 2, the fan 3 is fixedly connected with the first fixed ring 18, the fan 3 is driven to rotate synchronously by the first fixed ring 18, the one-way gear 11 is rotatably connected with the first fixed ring 18, the first fixed ring 18 is located in the casing 1, the first fixed ring 18 is provided with a limiting groove for the sliding of the adjacent first plug 17, when the first plug 17 contacts with the adjacent limiting groove on the first fixed ring 18, the rotor shaft 2 drives the first fixed ring 18 to rotate synchronously through the first plug 17, the first plug 17 has been located in the adjacent limiting groove on the first fixed ring 18 in the normal working state, the connecting assembly further includes symmetrically distributed second plug 20, the drive shaft 4 is provided with a second storage tank 19, the drive shaft 4 is provided with an exhaust hole communicated with the second storage tank 19, for discharging the air therein, the two second plug 20 symmetrically distributed in front and back are all sealingly and slidably connected in the second storage tank 19, the second plug 20 and the drive shaft 4 are provided with a second elastic member, the second elastic member is a spring, the second plug 20 will not move due to the centrifugal force generated by the rotation of the drive shaft 4 under the action of the adjacent second elastic member, keeping the position of the second plug 20 stable during the rotation of the drive shaft 4, the second fixed ring 21 is provided with two symmetrically distributed protrusions, the protrusions on the second fixed ring 21 are used for limiting the symmetrically adjacent second plug 20, when the second plug 20 moves to contact with the adjacent protrusion on the second fixed ring 21, the second fixed ring 21 is driven to rotate synchronously by the drive shaft 4 through the second plug 20, the rotor shaft 2 is provided with a first drive assembly for changing the position of the symmetrically distributed first plug 17, the drive shaft 4 is provided with a second drive assembly for changing the position of the symmetrically distributed second plug 20.

[0051] As Figure 3 , Figure 4 and Figures 7-10As shown, the first driving assembly comprises a first mounting ring 22 and a first gas injection shell 23. The first mounting ring 22 is fixedly connected to the rotor shaft 2 and rotates synchronously with the rotor shaft 2. The first mounting ring 22 is located outside the casing 1. The first gas injection shell 23 is fixedly connected to the casing 1 and communicates with the gas supply module through a hose. The first gas injection shell 23 is in sealed rotary connection with the first mounting ring 22. The first mounting ring 22 and the rotor shaft 2 are jointly provided with two first gas injection holes 24 symmetrically distributed front and back. The two first gas injection holes 24 respectively communicate with the two sides of the first storage groove 16. The gas injected into the first gas injection shell 23 flows into the first storage groove 16 along the two first gas injection holes 24, so that the two first plugs 17 are close to each other. The second driving assembly comprises a second mounting ring 25 and a second gas injection shell 26. The second mounting ring 25 is fixedly connected to the drive shaft 4 and rotates synchronously with the drive shaft 4. The second gas injection shell 26 is fixedly connected to the connecting frame of the casing 1 and communicates with the gas supply module through a hose. The second gas injection shell 26 is in sealed rotary connection with the second mounting ring 25. The second mounting ring 25 and the drive shaft 4 are jointly provided with a second gas injection hole 27. The second gas injection hole 27 communicates with the second storage groove 19. The gas delivered to the second gas injection shell 26 flows into the second storage groove 19 through the second gas injection hole 27, so that the two second plugs 20 are away from each other.

[0052] In the process of rotating the drive shaft 4, the drive shaft 4 drives the two second plugs 20 and the second mounting ring 25 to rotate synchronously. At the same time, in the process of driving the rotor shaft 2 to rotate by the drive shaft 4 through the pneumatic clutch 5, the rotor shaft 2 drives the first fixed ring 18 to rotate through the two first plugs 17. The first fixed ring 18 drives the fan 3 to rotate synchronously.

[0053] After the air in the pneumatic clutch 5 is pumped out by the gas supply device, the control terminal controls the gas supply device to deliver gas into the first gas injection shell 23, so as to deliver gas into the first storage groove 16 through the two first gas injection holes 24, so that the two first plugs 17 are close to each other, and the first elastic member between the first plug 17 and the rotor shaft 2 is stretched to store energy, so that the two first plugs 17 gradually lose contact with the first fixed ring 18, and the two first plugs 17 gradually move out of the adjacent limiting grooves in the first fixed ring 18. After the two first plugs 17 lose contact with the first fixed ring 18, the control terminal controls the gas supply device to stop delivering gas into the first storage groove 16, so as to maintain the two first plugs 17 at the moved position. At this time, the rotor shaft 2 cannot drive the fan 3 to continue rotating.

[0054] When the control terminal controls the gas supply device to deliver gas into the first storage tank 16, the gas supply device also delivers gas into the second gas injection shell 26, and then delivers gas into the second storage tank 19 through the second gas injection hole 27, so that the two second plungers 20 move away from each other during the rotation of the driving shaft 4, and then the two second plungers 20 gradually enter the second fixed ring 21. When the two second plungers 20 respectively contact one of the protrusions on the second fixed ring 21, the driving shaft 4 drives the second fixed ring 21 to rotate synchronously through the two second plungers 20, and then the first gear 13 is driven to rotate by the second fixed ring 21, and the transmission rod 12 and the second gear 14 are driven to rotate synchronously by the third gear 15, and the one-way gear 11 is driven to rotate synchronously by the second gear 14, and the fan 3 is driven to rotate by the one-way gear 11, so that the fan 3 continues to dissipate heat after the rotor shaft 2 stops rotating, and the residual heat of the device is quickly dissipated, thereby reducing the influence of the residual heat on the parts in the casing 1.

[0055] After the maintenance is completed, the user controls the gas supply device to extract the gas delivered into the first storage tank 16 and the second storage tank 19 through the control terminal, so that the two first plungers 17 are reset relative to the rotor shaft 2 under the action of the adjacent first elastic members, and the two second plungers 20 are reset relative to the driving shaft 4 under the action of the adjacent second elastic members, for subsequent normal use.

[0056] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that changes can be made to the embodiments without departing from the principles and spirit of the present application.

Claims

1. A car generator with a heat dissipation function, characterized in that: The system includes a housing (1), inside which a temperature sensor is installed. The temperature sensor is electrically connected to the vehicle's control terminal and is used to detect the temperature inside the housing (1). An air supply module is installed on one side of the housing (1). Two symmetrically distributed bearings are fixedly connected inside the housing (1). The housing (1) is rotatably connected to a rotor shaft (2) through the two bearings. A fan (3) is installed on the rotor shaft (2) inside the housing (1). The housing (1) is rotatably connected to a drive shaft (4) through a connecting frame. A pulley is fixedly connected to the drive shaft (4). The rotor shaft (2) and the drive shaft (4) are provided with a pneumatic clutch (5). The pneumatic clutch (5) is used to change the connection relationship between the rotor shaft (2) and the drive shaft (4). The pneumatic clutch (5) is connected to the air supply module. The air supply module is electrically connected to the vehicle's control terminal. It is used to control the gas content in the pneumatic clutch (5) when the temperature inside the housing (1) changes. The housing (1) is provided with a locking mechanism. The locking mechanism is used to lock and fix the rotor shaft (2) when the rotor shaft (2) is disconnected from the drive shaft (4).

2. A car generator with heat dissipation function according to claim 1, characterized in that: The locking mechanism includes a fixed shell (6), a storage shell (7), multiple locking blocks (8), multiple compression blocks (9), and an airbag (10). The fixed shell (6) is fixedly connected to the housing (1). The storage shell (7) is rotatably connected to the interior of the fixed shell (6). The rotor shaft (2) passes through the storage shell (7) and is rotatably connected to it. The multiple locking blocks (8) are rotatably connected to the interior of the storage shell (7). A torsion spring is fixed between the locking block (8) and the storage shell (7). The locking block (8) is used to increase the pressure of the airbag. The resistance to the rotation of the rotor shaft (2) is described. The number of the compression blocks (9) is the same as the number of the locking blocks (8). The compression blocks (9) are fixed to the fixed shell (6). The storage shell (7) is provided with the same number of through holes as the compression blocks (9) for the compression blocks (9) to slide. The compression blocks (9) are used to compress the adjacent locking blocks (8). The airbag (10) is fixed inside the fixed shell (6). The airbag (10) is fixed to the storage shell (7). The airbag (10) is connected to the air supply module through a hose.

3. A car generator with heat dissipation function according to claim 2, characterized in that: The locking block (8) is provided with an elastic part, and the elastic part of the locking block (8) is provided with a plurality of inclined grooves.

4. A car generator with heat dissipation function according to claim 3, characterized in that: The locking block (8) has an arc-shaped surface on the side away from the central axis of the rotor shaft (2), and the center of the circle containing the arc-shaped surface is not on the central axis of the rotor shaft (2).

5. A car generator with heat dissipation function according to claim 4, characterized in that: There is a gap between the elastic part on the locking block (8) and the rotor shaft (2).

6. A car generator with heat dissipation function according to claim 2, characterized in that: It also includes a one-way gear (11), which is disposed in the fan (3) and located inside the housing (1). The housing (1) is rotatably connected to a transmission rod (12), and the drive shaft (4) is rotatably connected to a second fixed ring (21). The second fixed ring (21) is fixedly connected to a first gear (13). A second gear (14) and a third gear (15) are fixedly connected to both sides of the transmission rod (12), wherein the second gear (14) meshes with the one-way gear (11), and the third gear (15) meshes with the first gear (13).

7. A car generator with heat dissipation function according to claim 6, characterized in that: It also includes a connecting component, which is used to change the transmission relationship between the drive shaft (4) and the fan (3). The connecting component includes a first pin (17) and a first fixing ring (18) symmetrically distributed. The rotor shaft (2) is provided with a first storage groove (16). The symmetrically distributed first pins (17) are all sealed and slidably connected in the first storage groove (16). A first elastic element is provided between the first pin (17) and the rotor shaft (2). The first fixing ring (18) is rotatably connected to the rotor shaft (2). The fan (3) is fixedly connected to the first fixing ring (18). The one-way gear (11) is rotatably connected to the first fixing ring (18). The first fixing ring (18) is located in the housing (1). The first fixing ring (18) is provided with symmetrically distributed limiting grooves. The limiting grooves on the first fixing ring (18) allow adjacent first pins (17) to slide.

8. A car generator with heat dissipation function according to claim 7, characterized in that: The connecting assembly further includes symmetrically distributed second pins (20), the drive shaft (4) is provided with a second storage groove (19), the symmetrically distributed second pins (20) are all sealed and slidably connected in the second storage groove (19), a second elastic element is provided between the second pins (20) and the drive shaft (4), the second fixing ring (21) is provided with symmetrically distributed protrusions, the protrusions on the second fixing ring (21) are used to limit the symmetrically adjacent second pins (20), the rotor shaft (2) is provided with a first drive assembly for changing the position of the symmetrically distributed first pins (17), and the drive shaft (4) is provided with a second drive assembly for changing the position of the symmetrically distributed second pins (20).

9. A car generator with heat dissipation function according to claim 8, characterized in that: The first drive assembly includes a first mounting ring (22) and a first air injection shell (23). The first mounting ring (22) is fixed to the rotor shaft (2) and is located on the outside of the housing (1). The first air injection shell (23) is fixed to the housing (1) and is connected to the air supply module through a hose. The first air injection shell (23) and the first mounting ring (22) are sealed and rotatably connected. The first mounting ring (22) and the rotor shaft (2) are provided with symmetrically distributed first air injection holes (24). The symmetrically distributed first air injection holes (24) are all connected to the first storage tank (16).

10. A car generator with heat dissipation function according to claim 9, characterized in that: The second drive assembly includes a second mounting ring (25) and a second air injection shell (26). The second mounting ring (25) is fixed to the drive shaft (4), and the second air injection shell (26) is fixed to the connecting frame of the housing (1). The second air injection shell (26) is connected to the air supply module through a hose. The second air injection shell (26) and the second mounting ring (25) are sealed and rotatably connected. The second mounting ring (25) and the drive shaft (4) are provided with a second air injection hole (27). The second air injection hole (27) is connected to the second storage tank (19).

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