CN209833373U

CN209833373U - Simple and reliable electric vehicle range-extending power supply system and range-extending electric vehicle

Info

Publication number: CN209833373U
Application number: CN201920466891.8U
Authority: CN
Inventors: 凌飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2019-12-24
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a simple and reliable electric motor car increases journey power supply system and increases journey electric motor car. The electric vehicle range-increasing power supply system is characterized in that a driving gear of the electric vehicle range-increasing power supply system is coaxially and fixedly connected with a wheel shaft of the electric vehicle, a driven gear is meshed with the driving gear, the driven gear is coaxially connected with an input shaft of a clutch, an output shaft of the clutch is connected with a low-speed shaft of the speed-increasing gear, a high-speed shaft of the speed-increasing gear is connected with a rotor shaft of a direct-current generator, a control end of a controller is electrically connected with the clutch to control connection or disconnection, a power output terminal of the direct-current generator is electrically connected with a storage battery, or the power. The simple and reliable range-extended electric vehicle comprises a simple and reliable range-extended electric power supply system of the electric vehicle. The utility model discloses a controller control clutch open and shut and convert the kinetic energy of wheel into the direct current and directly charge for the battery, under simple and reliable's the condition, reach the purpose of the pollution-free increase continuation of the journey mileage of environmental protection.

Description

Simple and reliable electric vehicle range-extending power supply system and range-extending electric vehicle

Technical Field

The utility model belongs to the technical field of the electric motor car, concretely relates to simple reliable, can effectively increase continuation of the journey mileage, pollution-free electric motor car of environmental protection increase journey power supply system and increase journey electric motor car.

Background

An electric vehicle, i.e. an electric drive vehicle, is a vehicle that uses a battery as an energy source, and converts electric energy into mechanical energy through a controller, a motor and other components to move so as to control the current and change the speed. The electric vehicle comprises an electric bicycle, an electric motorcycle, an electric tricycle, a low-speed electric automobile and the like.

With the improvement of the living standard of people and the formation of energy-saving and environment-friendly social consensus, the electric vehicle has the advantages of low use cost, energy conservation, environmental protection, zero emission and simple operation, and is widely applied as a short-distance vehicle. However, the driving range of the electric vehicle is limited due to the capacity of the storage battery of the electric vehicle, most electric vehicles in the prior art can only be parked in a quick charging device on the street or a parking place for charging, the battery is often charged by the quick charging device to damage the battery, the service life of the battery is shortened, and the safety charging mode of the parking place causes range anxiety due to the limit of the capacity of the battery. Therefore, in the prior art, a brake feedback electric energy device is also arranged in the electric vehicle to supplement the battery, but an alternating current generator is generally adopted to be connected with the wheel or directly arranged in the wheel, and the generated alternating current needs subsequent processes of rectification, filtering and the like, so that not only the energy conversion efficiency is reduced, but also the reliability of the system is reduced by an added circuit. In addition, because the voltage fed back during braking is generally higher, the vehicle-mounted charging circuit and the power supply circuit can be separated from a power supply system during braking, so that the storage battery of the electric vehicle can not be continuously charged, and normal driving power supply can not be realized, thereby bringing danger to driving. In addition, although the generator built in and in the wheel is compact in structure, the generator is also complex in structure and high in cost, and the aging speed is high due to the on-line state at any time. Because the brake feedback power generation technology is adopted, power cannot be generated when the vehicle is in a downhill or overspeed state without braking, the charging mode is not flexible, the range extending effect is not obvious, the vehicle can be decelerated only by braking in a slight overspeed state, and the recovery time is short and the abrasion of a brake pad is caused although part of energy is recovered.

SUMMERY OF THE UTILITY MODEL

The utility model discloses problem and not enough to prior art exist provides a simple reliable electric motor car that simply reliable, can effectively increase continuation of the journey mileage, environmental protection pollution-free and increases journey power supply system, still provides a simple reliable electric motor car that increases journey.

The utility model discloses a simple and reliable electric motor car increases journey power supply system is realized like this: including drive gear, driven gear, clutch, speed increaser, DC generator, controller, battery, the coaxial fixed connection of shaft of drive gear and electric motor car, driven gear and drive gear meshing, driven gear and clutch's input shaft coaxial coupling, the output shaft of clutch is connected with the low-speed hub connection of speed increaser, the high-speed hub connection of speed increaser and DC generator's rotor shaft, the control end and the clutch electricity of controller are connected in order to control the switch-on or disconnection, DC generator's power output terminal and battery electricity are connected, or DC generator's power output terminal passes through the controller and is connected with the battery electricity.

The utility model discloses a simple and reliable increases journey electric motor car is realized like this: including the utility model discloses arbitrary simple and reliable electric motor car increases journey power supply system in the embodiment of description.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model discloses a controller control clutch open and shut and convert the kinetic energy of wheel into the direct current and directly charge for the battery, splice among the prior art kinetic energy and need loaded down with trivial details and the loss of rectification, filtering after converting into the alternating current, under the simple and reliable condition, realize that the electric motor car can both charge for the battery at brake, high-speed motion state as required to can effectively increase electric automobile continuation of the journey mileage.

2. The utility model discloses a direct current generator passes through the wheel hub connection of speed increaser and electric motor car, realizes promoting the purpose in order to increase direct current generator rotor rotational speed with the shaft rotational speed of electric motor car, has improved direct current generator's efficiency for the charging voltage of battery is stable and the electric current is big.

3. The utility model discloses can pass through the controller at electric motor car downhill path or the slight hypervelocity of level road and initiative control joint clutch under the condition of not braking, drive the direct current motor electricity generation and charge for the battery, the speed of electric motor car is initiatively reduced through the resistance that increases journey power supply system simultaneously, has improved the security of electric motor car when reaching improvement charge efficiency.

4. The utility model discloses a controller can control the joint or the disconnection of clutch as required, can reduce the resistance of increase journey power supply system through the disconnection when normally traveling in order to improve the continuation of the journey mileage, also can reduce the idle running wearing and tearing of speed increaser and DC generator simultaneously to improve the life-span and the controllability of system.

Drawings

FIG. 1 is a schematic diagram of the principle and structure of a simple and reliable range-extended power supply system for an electric vehicle according to the present invention;

FIG. 2 is a schematic structural diagram of the flywheel shown in FIG. 1;

FIG. 3 is one of the rotational cross-sectional views of the flywheel of FIG. 2;

FIG. 4 is a second cross-sectional view of the flywheel of FIG. 2 in rotation;

in the figure: 1-driving gear, 2-driven gear, 3-clutch, 4-speed increaser, 5-DC generator, 6-controller, 7-storage battery, 8-parallel voltage stabilizing circuit, 9-control switch, 10-flywheel, 101-fixed disk, 102-flywheel sheet, 103-connecting spring, 104-kidney hole, 105-bulge, 106-guide rod, 107-guide hole, 108-flywheel shaft.

Detailed Description

The present invention is further described with reference to the following drawings and examples, but the present invention is not limited thereto in any way, and any modification or improvement based on the teaching of the present invention is within the protection scope of the present invention.

As shown in fig. 1, the utility model discloses a simple and reliable electric motor car increases journey power supply system includes drive gear 1, driven gear 2, clutch 3, speed increaser 4, dc generator 5, controller 6, battery 7, drive gear 1 and the coaxial fixed connection of shaft of electric motor car, driven gear 2 and the meshing of drive gear 1, driven gear 2 and clutch 3's input shaft coaxial coupling, clutch 3's output shaft and speed increaser 4's low-speed hub connection, speed increaser 4's high-speed hub connection and dc generator 5's rotor shaft, controller 6's control end is connected with control switch-on or disconnection with clutch 3 electricity, dc generator 5's power output terminal is connected with battery 7 electricity, or dc generator 5's power output terminal passes through controller 6 and is connected with battery 7 electricity.

And a switch connected with the brake of the electric vehicle is arranged at the input end of the controller 6.

And the charging terminal of the storage battery 7 is connected with a parallel voltage stabilizing circuit 8 in parallel.

The parallel voltage stabilizing circuit 8 is connected in series with a control switch 9 electrically connected with the controller 6.

The parallel voltage stabilizing circuit 8 comprises a voltage stabilizing diode V connected with the charging connecting terminal of the storage battery 7 in parallel_ZAnd a storage battery 7 and a voltage stabilizing diode V_ZA current limiting resistor R connected in series.

A flywheel 10 is also connected between the high-speed shaft of the speed increaser 4 and the rotor shaft of the direct-current generator 5.

The rotor shaft of the direct current generator 5 is coaxially and fixedly connected with an accelerating gear, and the accelerating gear is meshed with an inner gear ring or an outer gear ring on the outer edge of the flywheel 10.

As shown in fig. 2, the flywheel 10 includes a fixed disk 101, flywheel pieces 102 and a connecting spring 103, the fixed disk 101 is coaxially and fixedly connected with the flywheel shaft, at least two flywheel pieces 102 are uniformly distributed on the fixed disk 101 along the circumferential direction, the flywheel pieces 102 are radially and slidably connected with the fixed disk 101, and two ends of the connecting spring 103 are respectively fixedly connected with the adjacent flywheel pieces 102.

As shown in fig. 3, the fixed disk 101 is uniformly provided with waist holes 104 corresponding to the number of the flywheel pieces 102 in the circumferential direction and extending in the radial direction, one end of each flywheel piece 102 is provided with a protruding portion 105 in sliding fit with the waist hole 104, each flywheel piece 102 is embedded into the waist hole 104 through the protruding portion 105 and is in radial sliding connection with the fixed disk 101, and the connecting spring 103 is a helical extension spring or an arc spring, and two ends of the connecting spring are respectively fixedly connected with the adjacent flywheel pieces 102.

As shown in fig. 4, guide rods 106 corresponding to the number of flywheel pieces 102 and extending radially are uniformly distributed and fixed on one end or the outer circumference of the fixed disk 101 along the circumferential direction, guide holes 107 in sliding fit with the guide rods 106 are formed in the flywheel pieces 102, the flywheel pieces 102 pass through the guide holes 107 through the guide rods 106 and are in radial sliding connection with the fixed disk 101, the connection spring 103 is a helical extension spring or an arc spring, and two ends of the connection spring are fixedly connected with the adjacent flywheel pieces 102 respectively.

The driven gear 2, the clutch 3, the speed increaser 4 and the direct current generator 5 are meshed and connected with each other through a gear set.

The utility model discloses a simple and reliable increases journey electric motor car, including above-mentioned arbitrary one simple and reliable electric motor car increases journey power supply system.

The utility model discloses a theory of operation and working process:

the utility model discloses an opening and shutting of controller control clutch converts the kinetic energy of wheel into the direct current and directly charges for the battery, has abandoned the loaded down with trivial details that need rectification, filtering after the kinetic energy converts into the alternating current among the prior art, under simple and reliable's the circumstances, realizes that the electric motor car can be as required can both charge for the battery at brake, high-speed motion state to can effectively increase electric automobile continuation of the journey mileage; the direct current generator is connected with the wheel shaft of the electric vehicle through the speed increaser, so that the purpose of increasing the rotating speed of the wheel shaft of the electric vehicle to increase the rotating speed of a rotor of the direct current generator is achieved, the efficiency of the direct current generator is improved, and the charging voltage of the storage battery is stable and the current is large; the clutch is actively controlled and engaged by the controller under the condition that the electric vehicle is not braked due to slight overspeed when going downhill or on a flat road, the direct-current motor is driven to generate electricity to charge the storage battery, and the speed of the electric vehicle is actively reduced by the resistance of the extended-range power supply system, so that the charging efficiency is improved, and the safety of the electric vehicle is improved; the controller can control the connection or disconnection of the clutch according to requirements, the resistance of the range-extended power supply system can be reduced by disconnection during normal running so as to improve the endurance mileage, and meanwhile, the idle wear of the speed increaser and the direct-current generator can be reduced, so that the service life and the controllability of the system are improved. Furthermore, the input end of the controller is provided with a switch connected with the brake of the electric vehicle, the brake action can be activated by the controller to activate the clutch to be connected for generating electricity, and the automation process is simple and reliable. Furthermore, a parallel voltage stabilizing circuit is connected in parallel with a charging terminal of the storage battery, so that the adverse effect of brake feedback voltage on a power supply system can be effectively reduced, and the charging efficiency is improved. Furthermore, a flywheel is arranged between the speed increaser and the DC generator, the rotational inertia of the flywheel can be used for storing high-speed kinetic energy at the front section of the brake, then the clutch is separated through the controller when the rear section is at a low speed, the rotational inertia stored in the flywheel is used for driving the DC generator to generate power, and meanwhile, the inertia of the flywheel is used for assisting in shortening the braking distance. Furthermore, the inner gear ring or the outer gear ring of the flywheel is coaxially connected with the rotor shaft of the direct current generator through the accelerating gear, the rotor speed of the direct current generator can be effectively improved to achieve the purpose of improving the generating efficiency, and larger torque can be obtained to drive the direct current generator to rotate, so that the running stability of the direct current generator can be ensured, namely the stability of charging voltage and current. Furthermore, the integral flywheel is split into a plurality of independent flywheel pieces, and then the flywheel pieces are connected in a sliding manner by the fixed disc to form a complete flywheel with an energy storage function, so that the problem that the traditional integral flywheel is difficult to disassemble, assemble and transport due to heavy volume and large circle diameter is solved; and the flywheel piece is limited by the connecting spring, so that the flywheel piece is difficult to move outwards due to the resistance limitation of the connecting spring at low speed, lower rotational inertia can be kept, and the flywheel piece moves outwards due to the centrifugal force overcoming the resistance limitation of the elastic body at high speed, higher rotational inertia can be obtained, the starting moment is further reduced, and the energy storage capacity is improved. Furthermore, the flywheel sheet is embedded into the kidney hole of the fixed disk through the convex part to realize radial sliding connection, so that the connection between the flywheel sheet and the fixed disk is compact, the connection is reliable, and the sliding guidance performance is good. Furthermore, the flywheel piece passes through the guiding hole on the fixed disk through the guiding rod to realize radial sliding connection, so that the fixed disk can effectively reduce weight to further reduce starting force, the guiding rod structure is convenient to disassemble and assemble with the fixed disk, transportation is convenient, and the matching form of the guiding rod and the guiding hole also ensures that connection is more reliable and the guidance quality is better. To sum up, the utility model discloses a simple and reliable electric motor car increases journey power supply system has simple reliable, can effectively increase continuation of the journey mileage, the pollution-free characteristics of environmental protection.

The working process is as follows: as shown in fig. 1, 2 and 4, when the power switch of the electric vehicle is turned on, the storage battery 7 supplies power to the motor and drives the wheels of the vehicle to run, the driving gear 1 is meshed with the driven gear 2, the clutch 3 is disconnected, and the controller 6 detects the vehicle speed, controls the clutch 3 to be combined when the vehicle speed is greater than a set threshold (such as greater than 10km/h or greater than 50 km/h), connects the driven gear 2 with the speed increaser 4, increases the rotating speed input by the driven gear 2 and transmits the rotating speed to the direct current generator 5, the direct current generator 5 generates power and charges the storage battery 7 through the controller 6, and the controller 6 simultaneously connects the control switch 9 in the parallel voltage stabilizing circuit 8, and performs voltage stabilizing control on the charging voltage through the parallel voltage stabilizing circuit. After the clutch 3 is combined, the flywheel is accelerated by the speed increaser 4 and then output to the flywheel 10, when the flywheel 10 is combined, the flywheel sheet 102 is positioned at the position close to the center of the flywheel 10 due to the resistance of the connecting spring 103 (such as an arc spring), at the moment, the inertia torque of the flywheel 10 is smaller, and the starting force required by the flywheel 10 is smaller; as the rotation speed of the flywheel 10 increases, the centrifugal force of the flywheel plate 102 is gradually greater than the resistance of the connecting spring 103 (such as an arc spring), and at this time, the flywheel plate 102 moves outwards relative to the center of the fixed disk 101, so that the inertia torque of the flywheel 10 is increased, and the rotational inertia of the flywheel 10 is improved; when the flywheel 10 drives the dc generator 5 by inertia after the clutch 3 is disconnected, the flywheel 10 decelerates under the drag resistance of the dc generator 5 and the torque decreases, the centrifugal force of the flywheel plate 102 further increases, so that the flywheel plate 102 slides outwards along the guide rod 106 of the fixed disk 101, at this time, the centrifugal force and inertia of the flywheel 10 increase under the action of the flywheel plates 102, so that the torque decrease speed transmitted to the dc generator 5 is reduced, and the available power output by the dc generator 5 can be maintained at one end for a long time.

Claims

1. A simple and reliable range-increasing power supply system of an electric vehicle is characterized by comprising a driving gear (1), a driven gear (2), a clutch (3), a speed increaser (4), a direct current generator (5), a controller (6) and a storage battery (7), wherein the driving gear (1) is coaxially and fixedly connected with a wheel shaft of the electric vehicle, the driven gear (2) is meshed with the driving gear (1), the driven gear (2) is coaxially connected with an input shaft of the clutch (3), an output shaft of the clutch (3) is connected with a low-speed shaft of the speed increaser (4), the high-speed shaft of the speed increaser (4) is connected with a rotor shaft of the direct current generator (5), a control end of the controller (6) is electrically connected with the clutch (3) to control connection or disconnection, and a power output terminal of the direct current generator (5) is electrically connected with the storage battery (7), or the power output terminal of the direct current generator (5) is electrically connected with the storage battery (7) through the controller (6).

2. The simple and reliable range-extended power supply system for the electric vehicle as claimed in claim 1, wherein the input end of the controller (6) is provided with a switch connected with a brake of the electric vehicle.

3. The simple and reliable range-extended power supply system of the electric vehicle as claimed in claim 1, wherein the charging terminals of the storage battery (7) are connected in parallel with a parallel voltage stabilizing circuit (8).

4. The simple and reliable range-extended power supply system of the electric vehicle as claimed in claim 3, wherein the parallel voltage stabilizing circuit (8) is connected in series with a control switch (9) electrically connected with the controller (6).

5. The simple and reliable range-extended power supply system for electric vehicles according to any one of claims 1-4, characterized in that a flywheel (10) is connected between the high-speed shaft of the speed-increasing gearbox (4) and the rotor shaft of the DC generator (5).

6. The simple and reliable range-extending power supply system of the electric vehicle as claimed in claim 5, wherein the rotor shaft of the DC generator (5) is coaxially and fixedly connected with an accelerating gear, and the accelerating gear is meshed with an inner gear ring or an outer gear ring at the outer edge of the flywheel (10).

7. The simple and reliable electric vehicle range-extending power supply system according to claim 5, wherein the flywheel (10) comprises a fixed disk (101), flywheel pieces (102) and a connecting spring (103), the fixed disk (101) is fixedly connected with the flywheel shaft in a coaxial manner, at least two flywheel pieces (102) are uniformly distributed on the fixed disk (101) along the circumferential direction, the flywheel pieces (102) are connected with the fixed disk (101) in a radial sliding manner, and two ends of the connecting spring (103) are respectively fixedly connected with the adjacent flywheel pieces (102).

8. The simple and reliable electric vehicle range extending power supply system according to claim 7, wherein the fixed disk (101) is circumferentially and uniformly provided with waist holes (104) which correspond to the number of the flywheel pieces (102) and extend radially, one end of each flywheel piece (102) is provided with a protruding portion (105) which is in sliding fit with the corresponding waist hole (104), each flywheel piece (102) is embedded into the corresponding waist hole (104) through the protruding portion (105) and is in radial sliding connection with the fixed disk (101), and each connecting spring (103) is a helical extension spring or an arc spring, and two ends of each connecting spring are respectively and fixedly connected with the adjacent flywheel pieces (102).

9. The simple and reliable range-extending power supply system of the electric vehicle according to claim 7 is characterized in that guide rods (106) which correspond to the flywheel pieces (102) in number and extend radially are uniformly distributed and fixed at one end or the outer circumference of the fixed disc (101) along the circumferential direction, guide holes (107) which are in sliding fit with the guide rods (106) are formed in the flywheel pieces (102), the flywheel pieces (102) penetrate through the guide holes (107) through the guide rods (106) to be connected with the fixed disc (101) in a radial sliding manner, the connecting spring (103) is a spiral extension spring or an arc spring, and two ends of the connecting spring are respectively fixedly connected with the adjacent flywheel pieces (102).

10. A simple and reliable extended-range electric vehicle, characterized by comprising the simple and reliable extended-range power supply system of the electric vehicle as claimed in any one of claims 1 to 9.