CN112078384A - New national standard electric vehicle motor power auxiliary device - Google Patents

New national standard electric vehicle motor power auxiliary device Download PDF

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Publication number
CN112078384A
CN112078384A CN202011100507.6A CN202011100507A CN112078384A CN 112078384 A CN112078384 A CN 112078384A CN 202011100507 A CN202011100507 A CN 202011100507A CN 112078384 A CN112078384 A CN 112078384A
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CN
China
Prior art keywords
power
cavity
wall
rotating shaft
rotating
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Withdrawn
Application number
CN202011100507.6A
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Chinese (zh)
Inventor
王月珍
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Nanjing xidaojia Technology Co.,Ltd.
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Xianju Xialang New Energy Technology Co ltd
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Priority to CN202011100507.6A priority Critical patent/CN112078384A/en
Publication of CN112078384A publication Critical patent/CN112078384A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a new national standard electric vehicle motor power auxiliary device, which comprises a box body, wherein a transmission cavity is arranged in the box body, the invention utilizes the load current change caused by the output power rising of the electric vehicle on an upslope to control the auxiliary motor to carry out auxiliary power compensation on the power output shaft, so as to improve the torque and the rotating speed of the power output shaft, solve the problem of insufficient climbing power of the new national standard electric vehicle due to power limitation, meanwhile, the device automatically assists in heat dissipation when the power high-load works, internal element damage caused by overheating of a power motor is effectively avoided, in addition, the device also automatically limits the speed of the electric vehicle in a downhill state, and danger caused by difficulty in control due to the fact that the speed of the electric vehicle is too high is avoided.

Description

New national standard electric vehicle motor power auxiliary device
Technical Field
The invention relates to the field of electric vehicle power, in particular to a new national standard electric vehicle motor power auxiliary device.
Background
The electric vehicle is used as a travel tool of an environment-friendly energy source, is very popular in daily life of people, and has the advantages of small volume, low cost, difficulty in traffic jam and the like.
The electric motor car in the past often power is powerful, speed is very fast, nevertheless receive the restriction of electric vehicle safety protection level, too fast speed of traveling will bring personnel's safety hidden danger undoubtedly, and in recent years, electric vehicle's traffic accident rate is also high, and the injury to navigating mate is bigger, therefore, the country carries out the formulation of electric motor car new national standard, wherein stipulate the speed of traveling of new national standard electric motor car can not exceed 25Km/h, when reducing the speed of traveling and guaranteeing personal safety, its power is too low also to cause certain problem, for example, new national standard electric motor car is extremely labourious when going up a slope, some highway sections are driven by force and may cause power motor to burn out, consequently can only manual pushing, waste time and energy. The present invention addresses the above-mentioned problems.
Disclosure of Invention
The technical problem is as follows:
the running speed of the new national standard electric vehicle can not exceed 25Km/h, the power of the new national standard electric vehicle is too low, so that the new national standard electric vehicle is extremely labourious when going up a slope, and forced driving in some road sections can cause burning of a power motor, so that the new national standard electric vehicle can be pushed only manually, and wastes time and labor.
In order to solve the problems, the embodiment designs a new national standard electric vehicle motor power auxiliary device, which comprises a box body, wherein a transmission cavity is arranged in the box body, a placing cavity is arranged in the box body, an upper side inner wall and a lower side inner wall of the transmission cavity are communicated, a power motor is fixedly arranged on the lower side inner wall of the placing cavity, a power cavity is arranged in the box body and is positioned at the lower side of the placing cavity, the lower end of the power motor is connected with a power output shaft in a power connection mode, the lower end of the power output shaft extends to the outer side of the lower end face of the box body and is rotatably connected with the upper side inner wall and the lower side inner wall of the power cavity, a heat dissipation device is arranged in the transmission cavity and comprises a first bearing plate fixedly arranged on the upper side inner wall of the transmission cavity, a first rotating shaft is rotatably arranged on the inner wall at the, the rotary power transmission device is characterized in that a connecting block is rotatably arranged on the first rotating shaft, a rotating cavity is arranged in the connecting block, a rotating pin is rotatably arranged in the rotating cavity, a second rotating shaft which is meshed and connected with bevel teeth of the first rotating shaft is fixedly arranged on the lower end face of the second rotating shaft, a cooling fan is fixedly arranged on the lower end face of the second rotating shaft, a feedback cavity which is communicated with the lower inner wall of the transmission cavity is arranged in the box body, an auxiliary device is arranged in the feedback cavity and comprises a sliding rotating shaft which is vertically and slidably arranged on the lower inner wall of the feedback cavity and the upper inner wall of the power cavity, a rotating disc positioned in the feedback cavity is rotatably arranged on the sliding rotating shaft, a feedback spring is fixedly arranged between the lower end face of the rotating disc and the lower inner wall of the feedback cavity, a permanent magnet is fixedly arranged on the upper end face of the rotating disc, and a conflict, the utility model discloses a friction chamber, including power chamber, power cavity, fixed be equipped with on the power chamber upside inner wall can with the auxiliary switch that conflict the carousel, the fixed gear that is located in the last position of being equipped with of slip pivot the first right-hand gear of conflict carousel downside, the power intracavity is equipped with speed limiting device, speed limiting device is including fixed the setting fixed case on the power chamber up end, fixed incasement is equipped with the friction chamber, power output shaft with the inboard wall rotation connection about the friction chamber, the last fixed rotation wheel that is located of being equipped with of power output shaft.
The heat dissipation device further comprises a second bearing plate fixedly arranged on the inner wall of the right side of the transmission cavity, an auxiliary motor is fixedly arranged on the inner wall of the lower side of the power cavity, the upper end face of the auxiliary motor is connected with a third rotating shaft in a rotating mode, the inner wall of the upper side of the transmission cavity is connected with the third rotating shaft in a rotating mode, the third rotating shaft is connected with the second bearing plate in a rotating mode and connected with the first rotating shaft in a conical tooth meshing mode, the inner wall of the upper side of the transmission cavity is communicated with the upper end face of the box body to form a ventilation opening, dust screens used for dust prevention are fixedly arranged on the inner walls of the front side, the rear side and the left side of the ventilation opening, and when the.
Wherein, the auxiliary device also comprises a second straight gear which is fixedly arranged on the third rotating shaft and can be meshed with the first straight gear, the positive fixed connection of the upper end surface of the power motor is provided with a first electric wire, the other end of the first electric wire extends to the outer side of the left end surface of the box body and is fixedly connected with the positive of the power source, the negative fixed connection of the upper end surface of the power motor is provided with a second electric wire, the other end of the second electric wire extends to the outer side of the left end surface of the box body and is fixedly connected with the negative of the power source, the second electric wire is provided with an electromagnet in series, the right end surface of the electromagnet is fixedly connected with the left end surface of the second bearing shaft plate and can be attracted with the permanent magnet, the inner wall of the upper side and the lower side of the power cavity is rotatably provided with a fourth rotating shaft, the third straight gear which can be meshed with the first straight gear is fixedly arranged on the fourth rotating shaft, the power output shaft is rotatably provided with a second belt wheel, a limiting cavity is arranged in the second belt wheel, a fixed wheel positioned in the limiting cavity is fixedly arranged on the power output shaft, the fixed wheel is wound on the power output shaft annular array and is fixedly provided with eight cambered surface blocks, eight limiting pins are arranged on the inner walls of the upper side and the lower side of the limiting cavity in a rotating mode relative to the torsional springs at the corresponding positions of the eight cambered surface blocks, pawls capable of being abutted against the cambered surface blocks are fixedly arranged on the limiting pins, a belt is wound on the limiting cavity and the first belt wheel, when an electric vehicle is in an uphill state, the output power of the power motor is increased, the current of the power motor is increased due to the fact that the power voltage is unchanged, the magnetism of the electromagnet is enhanced, the electromagnet is attracted by the permanent magnet, the first straight gear moves upwards to be engaged with the third straight gear and the second straight gear, and meanwhile, the abutting rotary disc is abutted, the first belt wheel rotates to drive the second belt wheel to rotate, and the fourth rotating shaft rotating speed is greater than the power output shaft rotating speed, so that the belt slips on the second belt wheel and the first belt wheel, and simultaneously, under the action of friction force of a contact surface of the belt and the first belt wheel, a part of power is still transmitted to the power output shaft by the belt, so that the torque of the power output shaft is increased, and the power performance of the electric vehicle on an uphill slope is improved.
Wherein, speed limiting device still includes and winds power output shaft annular array sets up six smooth chambeies on the rotation wheel, smooth intracavity is close to or keeps away from annular array center side slip and is equipped with the slider, the slider be close to annular array center side end face with smooth chamber is close to the fixed reset spring that is equipped with between the inner wall of array center side, the slider keep away from on the array center side end face fixed be equipped with can with the friction disc that rubs intracavity wall friction and contradict, when electric vehicle at downhill path process speed when too fast, the centrifugal force that the slider receives is greater than reset spring's elasticity, the slider is to keeping away from annular array center side slip, thereby makes the friction disc with rub intracavity wall friction and contradict, and then realize power output shaft's speed limit avoids taking place danger because of the speed is too fast.
The invention has the beneficial effects that: the invention utilizes the load current change caused by the output power rising of the electric vehicle on the uphill to control the auxiliary motor to carry out auxiliary power compensation on the power output shaft so as to improve the torque and the rotating speed of the power output shaft, solves the problem of insufficient climbing power caused by power limitation of the new national standard electric vehicle, and simultaneously carries out automatic auxiliary heat dissipation on the power output shaft when the power is in high-load work, thereby effectively avoiding the damage of internal elements caused by overheating of the power motor.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;
FIG. 3 is a schematic view of the structure in the direction "B-B" in FIG. 1;
fig. 4 is an enlarged schematic view of a portion "C" in fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a motor power auxiliary device of a new national standard electric vehicle, which is mainly applied to the power auxiliary process of the motor of the new national standard electric vehicle, and the invention is further explained by combining the attached drawings of the invention:
the invention relates to a new national standard electric vehicle motor power auxiliary device, which comprises a box body 11, wherein a transmission cavity 26 is arranged in the box body 11, a placing cavity 14 is arranged in the box body 11, the upper inner wall of the box body 11 is communicated with the lower inner wall of the transmission cavity 26, a power motor 13 is fixedly arranged on the lower inner wall of the placing cavity 14, a power cavity 42 positioned on the lower side of the placing cavity 14 is arranged in the box body 11, the lower end of the power motor 13 is connected with a power output shaft 41 in a power mode, the lower end of the power output shaft 41 extends to the outer side of the lower end face of the box body 11 and is rotatably connected with the upper inner wall and the lower inner wall of the power cavity 42, a heat dissipation device 901 is arranged in the transmission cavity 26, the heat dissipation device 901 comprises a first bearing plate 23 fixedly arranged on the upper inner wall of the transmission cavity 26, a first rotating shaft, a connecting block 58 is rotatably arranged on the first rotating shaft 21, a rotating cavity 59 is arranged in the connecting block 58, a rotating pin 57 is rotatably arranged in the rotating cavity 59, a second rotating shaft 18 which is meshed with the bevel gear of the first rotating shaft 21 is fixedly arranged on the lower end face of the rotating pin 57, a heat radiation fan 17 is fixedly arranged on the lower end face of the second rotating shaft 18, a feedback cavity 22 which is communicated with the inner wall of the lower side of the transmission cavity 26 is arranged in the box body 11, an auxiliary device 902 is arranged in the feedback cavity 22, the auxiliary device 902 comprises a sliding rotating shaft 36 which is vertically slidably arranged on the inner wall of the lower side of the feedback cavity 22 and the inner wall of the upper side of the power cavity 42, a rotating disc 29 which is positioned in the feedback cavity 22 is rotatably arranged on the sliding rotating shaft 36, and a feedback spring 30 is fixedly arranged between the lower end face of the rotating disc 29 and the inner wall of, the upper end face of the rotating disc 29 is fixedly provided with a permanent magnet 28, the sliding rotating shaft 36 is rotatably provided with a conflict rotating disc 32 positioned in the power cavity 42, the inner wall of the upper side of the power cavity 42 is fixedly provided with an auxiliary switch 31 which can conflict with the conflict rotating disc 32, the sliding rotating shaft 36 is fixedly provided with a first straight gear 37 positioned on the lower side of the conflict rotating disc 32, the power cavity 42 is internally provided with a speed limiting device 903, the speed limiting device 903 comprises a fixed box 43 fixedly arranged on the upper end face of the power cavity 42, the fixed box 43 is internally provided with a friction cavity 44, the power output shaft 41 is rotatably connected with the inner wall of the upper side and the lower side of the friction cavity 44, and the power output shaft 41 is fixedly provided with a rotating wheel 48 positioned in the friction cavity.
According to an embodiment, the heat dissipation apparatus 901 is described in detail below, the heat dissipation apparatus 901 further includes a second bearing plate 27 fixedly disposed on the inner wall of the right side of the transmission cavity 26, an auxiliary motor 35 is fixedly disposed on the inner wall of the lower side of the power cavity 42, a third rotating shaft 25 rotatably connected to the inner wall of the upper side of the transmission cavity 26 is disposed on the upper end face of the auxiliary motor 35 in a power connection manner, the third rotating shaft 25 is rotatably connected to the second bearing plate 27 and is in conical tooth engagement with the first rotating shaft 21, a ventilation opening 19 is disposed through the inner wall of the upper side of the transmission cavity 26 and the upper end face of the box 11, dustproof dust screens 20 are fixedly disposed on the inner walls of the front, rear, left and right sides of the ventilation opening 19, and when the auxiliary motor 35 works, the heat dissipation fan 17 rotates to dissipate heat of the power motor 13.
According to the embodiment, the following detailed description of the auxiliary device 902 is provided, the auxiliary device 902 further includes a second spur gear 33 fixedly disposed on the third rotation axis 25 and capable of engaging with the first spur gear 37, the positive pole of the upper end surface of the power motor 13 is fixedly connected with a first electric wire 15, the other end of the first electric wire 15 extends to the outside of the left end surface of the box 11 and is fixedly connected with the positive pole of the power source, the negative pole of the upper end surface of the power motor 13 is fixedly connected with a second electric wire 16, the other end of the second electric wire 16 extends to the outside of the left end surface of the box 11 and is fixedly connected with the negative pole of the power source, an electromagnet 24 is connected in series to the second electric wire 16, the right end surface of the electromagnet 24 is fixedly connected with the left end surface of the second bearing plate 27 and can be attracted to the permanent magnet 28, a fourth rotation axis 39 is rotatably disposed on the inner walls, a third straight gear 40 which can be meshed with the first straight gear 37 is fixedly arranged on the fourth rotating shaft 39, a first belt pulley 38 which is positioned on the lower side of the third straight gear 40 is fixedly arranged on the fourth rotating shaft 39, a second belt pulley 56 is rotatably arranged on the power output shaft 41, a limiting cavity 53 is arranged in the second belt pulley 56, a fixed pulley 54 which is positioned in the limiting cavity 53 is fixedly arranged on the power output shaft 41, eight cambered blocks 55 are fixedly arranged on the fixed pulley 54 around the power output shaft 41 in an annular array, eight limiting pins 51 are rotatably arranged on the inner walls of the upper side and the lower side of the limiting cavity 53 relative to torsional springs at the corresponding positions of the eight cambered blocks 55, pawls 52 which can be abutted against the cambered blocks 55 are fixedly arranged on the limiting pins 51, a belt 12 is wound on the limiting cavity 53 and the first belt pulley 38, and when the electric vehicle is in an uphill state, the output power of the power motor 13 is increased, the current of the power motor 13 is increased due to the unchanged power voltage, the electromagnet 24 is attracted to the permanent magnet 28 in a magnetic enhancing manner, the first spur gear 37 moves upwards to be meshed with the third spur gear 40 and the second spur gear 33, meanwhile, the interference rotating disc 32 interferes with the auxiliary switch 31 to trigger the auxiliary motor 35 to work, the first pulley 38 rotates to drive the second pulley 56 to rotate, the rotation speed of the fourth rotating shaft 39 is greater than that of the power output shaft 41, the belt 12 slips on the second pulley 56 and the first pulley 38, and simultaneously, due to the friction force between the belt 12 and the contact surface between the second pulley 56 and the first pulley 38, a part of the power of the belt 12 is transmitted to the power output shaft 41, so as to increase the torque of the power output shaft 41, the power performance of the electric vehicle on an uphill slope is improved.
According to the embodiment, the speed limiting device 903 is described in detail below, the speed limiting device 903 further includes six sliding cavities 46 arranged on the rotating wheel 48 in an annular array manner around the power output shaft 41, a sliding block 49 is slidably arranged in the sliding cavity 46 close to or far from the center side of the annular array, a return spring 45 is fixedly arranged between the side end face of the sliding block 49 close to the center side of the annular array and the inner wall of the sliding cavity 46 close to the center side of the array, a friction plate 50 capable of being in friction contact with the inner wall of the friction cavity 44 is fixedly arranged on the side end face of the sliding block 49 far away from the center side of the array, when the speed of the electric vehicle in the downhill process is too high, the centrifugal force applied to the sliding block 49 is greater than the elastic force of the return spring 45, and the sliding block 49 slides towards the side far away from the center of the annular array, so that the, avoiding danger caused by too high speed.
The following describes the usage steps of the motor power assisting device of a new national standard electric vehicle in detail with reference to fig. 1 to 4:
initially, the first electric wire 15 and the second electric wire 16 are powered on, the power motor 13 operates to drive the power output shaft 41 to rotate, the centrifugal force borne by the slider 49 is smaller than the elastic force of the return spring 45, the friction plate 50 does not frictionally press against the inner wall of the friction cavity 44, the power output shaft 41 drives the fixed wheel 54 and the arc surface 55 to rotate, the arc surface 55 presses against the pawl 52, the pawl 52 rotates clockwise to slide from the surface of the arc surface 55, i.e., the power output shaft 41 rotates and does not drive the second pulley 56 to rotate, so that the first pulley 38 and the fourth rotating shaft 39 do not rotate, the electromagnet 24 is powered on and has magnetism which is smaller than the elastic force of the feedback spring 30, so that the electromagnet 24 is not attracted with the permanent magnet 28, i.e., the sliding rotating shaft 36, the first straight gear 37 and the pressing rotary disc 32 do not move upwards, the pressing rotary disc 32 does not press against the auxiliary switch 31, the, the auxiliary motor 35 is not operated, and the third rotating shaft 25 and the second spur gear 33 are not rotated, so that the first rotating shaft 21, the second rotating shaft 18 and the heat radiating fan 17 are not rotated;
when ascending, the output power of the power motor 13 is increased, the power voltage is unchanged, the current of the power motor 13 is increased, the magnetism of the electromagnet 24 is enhanced and the electromagnet is attracted with the permanent magnet 28, the rotating disc 29, the abutting rotating disc 32, the sliding rotating shaft 36 and the first straight gear 37 move upwards, the first straight gear 37 moves upwards to be meshed with the third straight gear 40 and the second straight gear 33, the abutting rotating disc 32 moves upwards to abut against the auxiliary switch 31 to trigger the auxiliary motor 35 to work, so that the third rotating shaft 25 and the second straight gear 33 rotate, the second straight gear 33 rotates to drive the first straight gear 37 to rotate, the first straight gear 37 drives the third straight gear 40 and the fourth rotating shaft 39 to rotate to drive the first belt pulley 38 to rotate, the first belt pulley 38 drives the second belt pulley 56 to rotate through the belt 12, the pawl 52 is blocked with the arc-shaped block 55 to drive the fixed gear 54 and the power output shaft 41 to rotate, and the rotating speed of the fourth rotating shaft 39, therefore, the belt 12 slips on the second belt wheel 56 and the first belt wheel 38, and simultaneously, under the action of friction force of the belt 12 and the contact surface of the second belt wheel 56 and the first belt wheel 38, a part of power of the belt 12 is still transmitted to the power output shaft 41, so that the torque of the power output shaft 41 is increased, the power performance of the electric vehicle on an uphill slope is improved, the third rotating shaft 25 rotates to drive the first rotating shaft 21 in meshing connection with the bevel gear to rotate, the first rotating shaft 21 drives the second rotating shaft 18 in meshing connection with the bevel gear to rotate, and the heat dissipation fan 17 rotates to dissipate heat of the power motor 13, so that the power motor 13 is prevented from being damaged due to overhigh temperature under a high power state, and when the electric vehicle finishes an uphill road section, the output power of the power motor 13 is reduced, and all devices along the same transmission route return;
when the electric vehicle goes downhill, the speed of the electric vehicle is greatly increased under the component force action of the gravity of the vehicle along the downhill direction, the speed of the power output shaft 41 is increased, the centrifugal force borne by the slide block 49 is larger than the elastic force of the return spring 45, the slide block 49 and the friction plate 50 slide towards the side far away from the center of the annular array, the return spring 45 is stretched, the friction plate 50 is in friction contact with the inner wall of the friction cavity 44, the speed limit of the power output shaft 41 is realized by utilizing the friction resistance, the danger caused by the over-high speed is avoided, and when the electric vehicle finishes the downhill road section, the rotating speed of the.
The invention has the beneficial effects that: the invention utilizes the load current change caused by the output power rising of the electric vehicle on the uphill to control the auxiliary motor to carry out auxiliary power compensation on the power output shaft so as to improve the torque and the rotating speed of the power output shaft, solves the problem of insufficient climbing power caused by power limitation of the new national standard electric vehicle, and simultaneously carries out automatic auxiliary heat dissipation on the power output shaft when the power is in high-load work, thereby effectively avoiding the damage of internal elements caused by overheating of the power motor.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims (4)

1. The utility model provides a new national standard electric vehicle motor power auxiliary device, the power distribution box comprises a box body, be equipped with the transmission chamber in the box, be equipped with in the box upside inner wall with transmission chamber downside inner wall link up to be equipped with and places the chamber, place fixed motor power on the chamber downside inner wall, be equipped with in the box and be located place the power chamber of chamber downside, motor power lower extreme power connection is equipped with power output shaft, the power output shaft lower extreme extends to the box down the terminal surface outside and with downside inner wall rotates to be connected its characterized in that on the power chamber: a heat dissipation device for preventing the power motor from being overheated is arranged in the transmission cavity;
the heat dissipation device comprises a first bearing plate fixedly arranged on the inner wall of the upper side of the transmission cavity, a first rotating shaft is arranged on the inner wall of the left side of the transmission cavity and rotates in the first bearing plate, a connecting block is rotatably arranged on the first rotating shaft, a rotating cavity is arranged in the connecting block, a rotating pin is rotatably arranged in the rotating cavity, a second rotating shaft meshed with the conical teeth of the first rotating shaft is fixedly arranged on the lower end face of the rotating pin, a heat dissipation fan is fixedly arranged on the lower end face of the second rotating shaft, and a feedback cavity communicated with the inner wall of the lower side of the transmission cavity is arranged in the box body;
an auxiliary device is arranged in the feedback cavity, the auxiliary device comprises a sliding rotating shaft which is arranged on the inner wall of the lower side of the feedback cavity and the inner wall of the upper side of the power cavity in a vertically sliding mode, a rotating disc positioned in the feedback cavity is arranged on the sliding rotating shaft in a rotating mode, a feedback spring is fixedly arranged between the lower end face of the rotating disc and the inner wall of the lower side of the feedback cavity, a permanent magnet is fixedly arranged on the upper end face of the rotating disc, a collision turntable positioned in the power cavity is arranged on the sliding rotating shaft in a rotating mode, an auxiliary switch capable of colliding with the collision turntable is fixedly arranged on the inner wall of the upper side of the power cavity, and a first straight gear positioned on the;
the speed limiting device is arranged in the power cavity and comprises a fixing box fixedly arranged on the upper end face of the power cavity, a friction cavity is arranged in the fixing box, the power output shaft is rotatably connected with the inner walls of the upper side and the lower side of the friction cavity, and rotating wheels positioned in the friction cavity are fixedly arranged on the power output shaft.
2. The new international electric vehicle motor power assisting device as claimed in claim 1, characterized in that: the heat dissipation device is characterized by further comprising a second bearing plate fixedly arranged on the inner wall of the right side of the transmission cavity, an auxiliary motor is fixedly arranged on the inner wall of the lower side of the power cavity, the upper end face of the auxiliary motor is connected with a third rotating shaft in a power connection mode, the inner wall of the upper side of the transmission cavity is connected with the third rotating shaft in a rotating mode, the third rotating shaft is connected with the second bearing plate in a rotating mode and connected with the first rotating shaft in a conical tooth meshing mode, the inner wall of the upper side of the transmission cavity is communicated with the upper end face of the box body to form a ventilation opening, and dust-proof nets are fixedly arranged.
3. The new international electric vehicle motor power assisting device as claimed in claim 1, characterized in that: the auxiliary device further comprises a second straight gear which is fixedly arranged on the third rotating shaft and can be meshed with the first straight gear, a first electric wire is fixedly connected to the anode of the upper end surface of the power motor, the other end of the first electric wire extends to the outer side of the left end surface of the box body and is fixedly connected with the anode of the power source, a second electric wire is fixedly connected to the cathode of the upper end surface of the power motor, the other end of the second electric wire extends to the outer side of the left end surface of the box body and is fixedly connected with the cathode of the power source, an electromagnet is serially connected to the second electric wire, the right end surface of the electromagnet is fixedly connected with the left end surface of the second bearing shaft plate and can be attracted with the permanent magnet, a fourth rotating shaft is rotatably arranged on the inner wall of the upper side and the lower side of the power cavity, a third straight gear which can be meshed with the first straight gear is fixedly arranged on the fourth rotating shaft, and a first, rotate on the power output shaft and be equipped with the second band pulley, be equipped with the restriction chamber in the second band pulley, the last fixed tight pulley that is located the restriction intracavity that is equipped with of power output shaft, wind on the tight pulley power output shaft annular array and fixed eight cambered surface pieces that are equipped with, about eight on the inboard wall of restriction chamber the cambered surface piece corresponds the position torsional spring and rotates and is equipped with eight restriction round pins, the fixed pawl that can with the cambered surface piece is contradicted that is equipped with on the restriction round pin, the restriction chamber with the winding is equipped with the belt on the first band pulley.
4. The new international electric vehicle motor power assisting device as claimed in claim 1, characterized in that: the speed limiting device is still including winding power output shaft annular array sets up six smooth chambeies on the rotation wheel, it is equipped with the slider to slide near or keep away from annular array center side in the smooth intracavity, the slider be close to annular array center side end face with smooth chamber is close to the fixed reset spring that is equipped with between the central side inner wall of array, the slider keep away from on the central side end face of array fixed be equipped with can with the friction disc that friction intracavity wall friction was contradicted.
CN202011100507.6A 2020-10-15 2020-10-15 New national standard electric vehicle motor power auxiliary device Withdrawn CN112078384A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113477891A (en) * 2021-06-03 2021-10-08 刘小燕 Prevent falling and injure by a crashing object's core making machine connecting device

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CN202475129U (en) * 2011-12-28 2012-10-03 南京华翔风电能源科技有限公司 Speed limiting device for wind driven generator
CN103434379A (en) * 2013-08-31 2013-12-11 西南大学 Dual-motor automatic variable-speed drive system of electric vehicle
US20180162376A1 (en) * 2016-12-14 2018-06-14 Bendix Commercial Vehicle Systems Llc Front End Motor-Generator System and Hybrid Electric Vehicle Operating Method
CN111049304A (en) * 2020-01-18 2020-04-21 东阳宋辰传动科技有限公司 Auxiliary device of motor
CN211641808U (en) * 2020-01-09 2020-10-09 温州大学瓯江学院 Power system of fuel cell vehicle

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Publication number Priority date Publication date Assignee Title
CN202475129U (en) * 2011-12-28 2012-10-03 南京华翔风电能源科技有限公司 Speed limiting device for wind driven generator
CN103434379A (en) * 2013-08-31 2013-12-11 西南大学 Dual-motor automatic variable-speed drive system of electric vehicle
US20180162376A1 (en) * 2016-12-14 2018-06-14 Bendix Commercial Vehicle Systems Llc Front End Motor-Generator System and Hybrid Electric Vehicle Operating Method
CN211641808U (en) * 2020-01-09 2020-10-09 温州大学瓯江学院 Power system of fuel cell vehicle
CN111049304A (en) * 2020-01-18 2020-04-21 东阳宋辰传动科技有限公司 Auxiliary device of motor

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CN113477891A (en) * 2021-06-03 2021-10-08 刘小燕 Prevent falling and injure by a crashing object's core making machine connecting device

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