CN114801760A - Electric automobile automatic charging device utilizing braking kinetic energy - Google Patents
Electric automobile automatic charging device utilizing braking kinetic energy Download PDFInfo
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- CN114801760A CN114801760A CN202210524979.7A CN202210524979A CN114801760A CN 114801760 A CN114801760 A CN 114801760A CN 202210524979 A CN202210524979 A CN 202210524979A CN 114801760 A CN114801760 A CN 114801760A
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- braking
- stator
- kinetic energy
- automobile
- charging device
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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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
- B60L7/18—Controlling the braking effect
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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 relates to the technical field of automobile energy recovery, in particular to an automatic electric automobile charging device utilizing braking kinetic energy, which comprises a power generation device and a charging control device, wherein the power generation device comprises a rotor with a permanent magnet and a stator for generating charging current, the outer surface of a half shaft is adhered with a magnetic yoke by epoxy resin, three symmetrical stator windings are placed in a silicon steel sheet and connected in a Y shape (star shape), a braking additional lead is led out after a braking switch of an original automobile braking circuit, the three symmetrical stator windings are respectively connected with a reed switch in series and are uniformly arranged around an electromagnetic coil in a surrounding manner, and the other end of the reed switch is respectively connected with a port for regenerative braking electric feedback of an electric automobile motor controller through a terminal; the invention can fully utilize the braking kinetic energy of the automobile, particularly the braking of the automobile is frequent, and the auxiliary charging effect is more obvious.
Description
Technical Field
The invention relates to the technical field of automobile energy recovery, in particular to an automatic charging device for an electric automobile by using braking kinetic energy.
Background
In order to protect the living environment and guarantee the energy supply, in recent years, under the strong support of national policies, electric vehicles have become the key point and hot spot of the development of the automobile industry from scratch. At present, in order to improve the endurance mileage, the electric automobile adopts a regenerative braking technology. The technology is that the motor works in a generator state when the electric automobile brakes, and the braking energy of the automobile is converted into electric energy to be recycled and stored in a power battery, so that the economic performance of the whole automobile is improved. However, in the current electric vehicle technology, the kinetic energy during braking is still not fully utilized. How to fully recycle the kinetic energy of the electric automobile during braking and to prompt the electric automobile to rapidly decelerate and stop is a topic worthy of research.
Disclosure of Invention
The present invention is provided to solve the above problems, and will be further described in the following.
An automatic charging device of an electric automobile by using braking kinetic energy comprises a power generation device and a charging control device,
the power generation device comprises a rotor with a permanent magnet and a stator for generating charging current, wherein the rotor comprises a half shaft, a magnetic conductive yoke and magnetic poles made of the permanent magnet, the magnetic conductive yoke is adhered to the outer surface of the half shaft through epoxy resin, and four magnetic poles made of the permanent magnet are uniformly adhered to the periphery of the magnetic conductive yoke through the epoxy resin;
the stator is arranged on the periphery of the rotor and comprises a stator iron core and a stator winding, the stator iron core is formed by mutually-insulated silicon steel sheets and sheet sheets in an overlapped mode, the silicon steel sheets are of a grooved annular structure, three symmetrical stator windings are placed in the silicon steel sheets, the stator windings are connected in a Y shape (star shape), and the stator is installed on the half shaft through a rolling bearing;
the charging control device comprises a brake additional lead, an electromagnetic coil and three reed switches, the brake additional lead is led out after the brake switch of the original vehicle brake line, and the brake additional lead is connected with the electromagnetic coil in series and then is grounded; the three-phase symmetrical stator windings are respectively connected with the reed switches in series and are uniformly arranged around the electromagnetic coil in a surrounding mode, and the other ends of the reed switches are respectively connected with ports of regenerative braking electric feedback of a motor controller of the electric automobile through terminals;
preferably, four spokes are uniformly arranged in the middle of the magnetic yoke;
preferably, vent holes are formed between adjacent spokes;
preferably, the magnetic pole is arc-shaped, and two ends of the magnetic pole are provided with oblique angles;
preferably, the two adjacent magnetic poles are in a dovetail shape, and epoxy resin is filled between the dovetails;
has the advantages that: compared with the prior art, the invention can fully utilize the braking kinetic energy of the automobile, particularly the automobile runs on urban roads, the braking of the automobile is frequent, the auxiliary charging effect is more obvious, the endurance mileage of the electric automobile can be effectively prolonged, the ampere force generated by the power generation device when generating power can block the rotation of the half shaft, so that the electric automobile is decelerated and stopped more rapidly, the braking distance is shortened, and the aim of improving the running safety is fulfilled.
Drawings
FIG. 1: the invention has a schematic structure;
in the figure: the braking control device comprises a power generation device 1, a rotor 11, a stator 12, a half shaft 13, a magnetic yoke 14, spokes 141, a magnetic pole 15, a stator iron core 16, a stator winding 17, a charging control device 2, a braking additional lead 21, an electromagnetic coil 22 and a reed switch 23.
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to fig. 1.
An electric automobile automatic charging device using braking kinetic energy comprises a power generation device 1 and a charging control device 2;
the power generation device 1 comprises a rotor 11 with a permanent magnet and a stator 12 for generating charging current, wherein the rotor 11 comprises a half shaft 13, a magnetic yoke 14 and a magnetic pole 15 made of the permanent magnet, the magnetic yoke 14 is adhered by epoxy resin on the outer surface of the half shaft 13, and the power generation device can be placed in the peripheral space on only one side of the half shaft 13 due to the position arrangement influence of a driving motor; four spokes 141 are uniformly arranged in the middle of the magnetic yoke 14, and a vent hole is formed between every two adjacent spokes 141, so that the heat dissipation of the power generation device is facilitated; four magnetic poles 15 made of permanent magnets are uniformly adhered to the periphery of the magnetic yoke 14 by epoxy resin, the magnetic poles 15 are arc-shaped, oblique angles are arranged at two ends of each magnetic pole, a dovetail shape is formed between every two adjacent magnetic poles 15, and the dovetail shape is filled with the epoxy resin;
the stator 12 is arranged at the periphery of the rotor 11, the stator 12 comprises a stator iron core 16 and a stator winding 17, the stator iron core 16 is formed by overlapping mutually insulated silicon steel sheets and sheet sheets, the silicon steel sheets are in a grooved annular structure, three symmetrical stator windings 17 are arranged in the silicon steel sheets, the stator windings 17 are connected in a Y shape (star shape), and the connection method has stronger power generation performance when the rotating speed is lower; the stator 12 is mounted on the half shaft 13 through a rolling bearing;
the charging control device 2 comprises a brake additional lead 21, an electromagnetic coil 22 and three reed switches 23, the brake additional lead 21 is led out behind the brake switch (on the side connected with a brake lamp) of the original vehicle brake circuit, and the brake additional lead 21 is grounded after being connected with the electromagnetic coil 22 in series; the three-phase symmetrical stator windings 17 are respectively connected in series with the reed switches 23 and are uniformly arranged around the electromagnetic coil 22 in a surrounding manner, and the other ends of the reed switches 23 are respectively connected with ports of regenerative braking (inherent in original vehicles) electric feedback of a motor controller of the electric vehicle through terminals, so that the power battery can be charged through functions of rectification, boosting and the like of the motor controller;
when the electric automobile normally runs, the brake switch is switched off, the brake additional lead 21 and the electromagnetic coil 22 connected in series have no current, the three reed switches 23 are in a switched-off state, and the device does not generate electricity. That is, the device does not generate power (not charge the power battery) under the non-braking condition, because if the device is operated under the non-braking condition, the ampere force (also called reluctance force, i.e. the force which hinders the half shaft 13 from rotating and therefore consumes a certain amount of power) is generated due to the action of the current generated by the three-phase stator winding 17 and the magnetic field of the magnetic pole 15 made of the permanent magnet, so that the device is not compensated. It should be noted that: the generator does not form a loop when the automobile normally runs (non-braking working condition), so that no current (only induced electromotive force and no induced current) exists in the three-phase stator winding 17, and no ampere force is generated between the magnetic field of the magnetic pole 15 made of the permanent magnet and the three-phase stator winding 17, so that the half shaft 13 is not hindered from rotating.
When the electric automobile brakes, the brake switch is switched on (connected), the brake additional lead 21 and the electromagnetic coil 22 connected in series have current passing through, the contacts of the three reed switches 23 are closed under the action of the current of the electromagnetic coil 22, and the device generates electricity and charges a power battery by using a motor controller. Meanwhile, the ampere force generated at the moment can block the rotation of the half shaft, so that the electric automobile can be decelerated and stopped more quickly, the braking distance is shortened, the aim of improving the driving safety is fulfilled, and the aim of killing two birds with one stone is fulfilled.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an utilize automatic charging device of electric automobile of braking kinetic energy, includes power generation facility (1) and charge control device (2), its characterized in that:
the power generation device (1) comprises a rotor (11) with a permanent magnet and a stator (12) for generating charging current, wherein the rotor (11) comprises half shafts (13), a magnetic conductive yoke (14) and magnetic poles (15) made of the permanent magnet, the magnetic conductive yoke (14) is adhered to the outer surface of each half shaft (13) by epoxy resin, and the four magnetic poles (15) made of the permanent magnet are uniformly adhered to the periphery of the magnetic conductive yoke (14) by epoxy resin;
the stator (12) is arranged on the periphery of the rotor (11), the stator (12) comprises a stator iron core (16) and a stator winding (17), the stator iron core (16) is formed by overlapping mutually insulated silicon steel sheets and sheet sheets, the silicon steel sheets are in a grooved annular structure, three symmetrical stator windings (17) are placed in the silicon steel sheets, the stator windings (17) are connected in a Y shape (star shape), and the stator (12) is installed on the half shaft (13) through a rolling bearing;
the charging control device (2) comprises a brake additional lead (21), an electromagnetic coil (22) and three reed switches (23), the brake additional lead (21) is led out after the brake switch of the original vehicle brake line, and the brake additional lead (21) is connected with the electromagnetic coil (22) in series and then is grounded; the three-phase symmetrical stator windings (17) are respectively connected with the reed switches (23) in series and are uniformly arranged around the electromagnetic coil (22) in a surrounding mode, and the other ends of the reed switches (23) are respectively connected with ports of regenerative braking electric feedback of an electric automobile motor controller through terminals.
2. The automatic charging device for electric vehicle using braking kinetic energy of claim 1, wherein: four spokes (141) are uniformly arranged in the middle of the magnetic guide yoke (14).
3. The automatic charging device for electric vehicle using braking kinetic energy according to claim 2, wherein: vent holes are formed between adjacent spokes (141).
4. The automatic charging device for electric vehicle using braking kinetic energy of claim 1, wherein: the magnetic pole (15) is arc-shaped, and two ends of the magnetic pole are provided with oblique angles.
5. The automatic charging device for electric vehicle using braking kinetic energy of claim 4, wherein: the two adjacent magnetic poles (15) are in a dovetail shape, and epoxy resin is filled between the dovetails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210524979.7A CN114801760A (en) | 2022-05-14 | 2022-05-14 | Electric automobile automatic charging device utilizing braking kinetic energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210524979.7A CN114801760A (en) | 2022-05-14 | 2022-05-14 | Electric automobile automatic charging device utilizing braking kinetic energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114801760A true CN114801760A (en) | 2022-07-29 |
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ID=82515162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210524979.7A Pending CN114801760A (en) | 2022-05-14 | 2022-05-14 | Electric automobile automatic charging device utilizing braking kinetic energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114801760A (en) |
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2022
- 2022-05-14 CN CN202210524979.7A patent/CN114801760A/en active Pending
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