CN109039017A - Charging pile system and control method thereof - Google Patents
Charging pile system and control method thereof Download PDFInfo
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- CN109039017A CN109039017A CN201810884036.9A CN201810884036A CN109039017A CN 109039017 A CN109039017 A CN 109039017A CN 201810884036 A CN201810884036 A CN 201810884036A CN 109039017 A CN109039017 A CN 109039017A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K53/00—Alleged dynamo-electric perpetua mobilia
Abstract
The invention discloses a charging pile system and a control method thereof, wherein the charging pile system comprises an exciter, an electric device, a magnetic moment wheel, a generator and a rectifying device; the magnetic moment wheel surrounds the rim and is provided with at least 4 rotating magnets at intervals in the same N/S polar direction, and the magnetic moment wheel is in transmission with the generator; the generator is connected with the rectifying device; the opposite magnetic polarities of the excitation body and the rotating body are opposite; the electric device comprises a control module and a position sensor, and a power supply control end of the electric device is connected with a commercial power supply or other power supplies; the position sensor is arranged at a fixed part close to the magnetic moment wheel; the electric device is mechanically and fixedly connected with the excitation body and is arranged adjacent to the magnetic moment wheel; when the magnetic moment wheel rotates, the electric device controls the exciting body to be respectively positioned in the minimum gap or far away from the magnetic moment wheel according to the relative position of the rotating magnet, so that the magnetic moment wheel drives the generator to rotate and generate electricity through the attraction of the reverse magnetic poles, and direct current is provided through the rectifying device.
Description
Technical Field
The invention relates to the field of application design of charging piles, in particular to a charging pile system designed based on the principle of opposite magnetic pole attraction between permanent magnets and a control method thereof.
Background
The early application of charging pile is based on the demand concept of establishing the electric network of charging to city electric automobile, and along with the development of charging pile technique, people think that charging pile is used to the peak clipping benefit millet of city electric network, or cooperate wind energy, solar energy device to use, has been given more to the mission of taking new forms of energy as the subject matter.
In the technical scheme of specific application of the charging pile, alternating current is generally required to be converted into direct current, and the output voltage is subjected to step-up/step-down adjustment, an AC-DC circuit or a DC-DC circuit is mainly adopted in the current technical application, and a high-frequency switching circuit is hidden in the AC-DC circuit or the DC-DC circuit, so that when the power is high and the isolation is poor, the accompanying high-frequency electromagnetic radiation easily interferes with an urban power grid, and the influence on the health of workers is difficult to ignore. Therefore, in many application fields, the industry desires to find a charging pile system which is convenient for adjusting output voltage without worrying about high-frequency electromagnetic radiation. One regressive thought is to use a DC motor to drive a generator instead of an AC-DC circuit or a DC-DC circuit, but this technical idea has low efficiency of converting electric energy, and many concepts of auxiliary mechanical energy devices, such as a flywheel and a rotating shaft of a generator, are proposed in the industry.
The design idea of the charging pile system can be inspired by waterwheel commonly used in ancient China, the working principle of the waterwheel is that a rotating power machine is not arranged on the axis, but a cup of water (a potential energy) is given at a proper time along the tangential direction of the outer side of the wheel page of the waterwheel, the falling potential energy of the cup of water is converted into power for the waterwheel to rotate around the axis, and the energy is quantized, but can form continuous operation which tends to be homogenized through the inertial digestion of the waterwheel. This enlightening model of ancient waterwheel acting can translate completely and fill electric pile system field design, and this application is based on a wheel along the principle that application permanent magnet diamagnetic pole looks absorption makes its acting at the magnetic moment wheel, and the hidden energy in the full play permanent magnet utilizes the rotatory inertia of magnetic moment wheel to continuously obtain the rotatory electricity generation of torque increment drive generator to provide the direct current through fairing and charge for the external load that fills electric pile system.
Disclosure of Invention
The invention aims to overcome the design defect that the conventional charging pile system is popular to adopt a high-frequency switching circuit, and provides a technical scheme of the charging pile system which increases torque of a magnetic moment wheel by using the periodic magnetic attraction effect and drives a generator to generate electricity and then rectify the electricity by the magnetic moment wheel, so that the design purposes of the charging pile system which avoids high-frequency electromagnetic radiation and is convenient for output voltage adjustment are achieved, the structure is simple, and the process is easy to realize.
In order to achieve the above object, the present invention provides a charging pile system designed based on the opposite pole attraction between permanent magnets, the charging pile system including an exciter, an electric device, a magnetic moment wheel, a generator, and a rectifier; the magnetic moment wheel surrounds the rim and is provided with at least 4 rotating magnets at intervals in the same N/S polar direction, and a rotating shaft of the magnetic moment wheel is fixedly connected with a rotating shaft of the generator coaxially or is driven by a speed change device; the generator is rotary, and the power output end of the generator is connected with the power input end of the rectifying device; the electric device is mechanically and fixedly connected with the excitation body; the magnetic polarity of the excitation body facing the magnetic moment wheel is opposite to the magnetic polarity of the rotating magnet facing the outer edge of the magnetic moment wheel;
the electric device comprises a position sensor and a control module, and a power supply control end of the electric device is connected with a commercial power supply or other power supplies; the position sensor is arranged at a fixed part close to the magnetic moment wheel, and the signal output end of the position sensor is connected with the working logic signal input end of the control module; the electric device and the magnetic moment wheel are arranged adjacently;
when the magnetic moment wheel rotates, the position sensor acquires a relative position signal of the rotation of the time sequence of the rotating magnet, the control module controls the electric device to move according to the signal and a set working logic, the exciting body is respectively positioned in a minimum gap with the magnetic moment wheel or far away from the magnetic moment wheel, the magnetic moment wheel drives the generator to rotate to generate electricity through the attraction effect of the periodic counter magnetic poles of the exciting body and the rotating magnet, and therefore direct current is provided for a charging pile load through the power output end of the rectifying device.
The excitation body and the rotating magnet are made of magnetic steel, neodymium iron boron and other permanent magnets well known to those skilled in the art, and different names are only used for clearly expressing the arrangement position and the movement characteristics of the excitation body and the rotating magnet; the mains supply comprises 220V, 380V or other voltage supplies and a direct current power supply which may appear in the future; the charging pile load comprises a system external load and a system internal load with certain logic control conditions.
In the charging pile system, the minimum gap between the excitation body and the magnetic moment wheel is that the distance between the excitation body and the rotating magnet is not more than 40mm. The minimum gap is also called air gap, and the size of the minimum gap is selected according to the design power of the charging pile system and the material flux intensity of the exciting body and the rotating magnet.
In the charging pile system, the magnetic moment wheel, the electric device and the excitation body are respectively provided with at least 1 in the charging pile system. The arrangement of the magnetic moment wheels is beneficial to increasing the inertia torque of the generator, but has high requirement on the mechanical strength of the generator; the provision of multiple pairs of exciter/electrodynamic machines is advantageous in increasing the torque of the magnetic moment wheel.
In the charging pile system, the magnetic moment wheel is composed of more than 2 layers of annular different materials.
The charging pile system comprises the integrated design of the excitation body and the electric device.
In the charging pile system, the other power supply devices include: primary battery means or/and energy storage means, means for converting thermodynamic mechanical energy into electrical energy; the energy storage device comprises a secondary battery or/and an electric driven mechanical energy storage device. The primary battery comprises but is not limited to a zinc-manganese battery, an aluminum air film battery and a battery pack formed by connecting a plurality of single primary batteries in series/parallel; the secondary battery comprises but is not limited to a lead-acid battery, a lithium battery, a nickel-hydrogen battery, a nickel-zinc battery and a zinc-air secondary battery, and a battery pack formed by connecting a plurality of single secondary batteries in series/parallel; the electric drive mechanical energy storage device comprises a device which applies electric machinery to enable the internal structure of the device to be subjected to reversible deformation and stores mechanical energy in the form of compressed air; sources of thermal power include, but are not limited to, coal, fuel oil, and gas. The other power supply devices are used for maintaining the electric device to work when the urban power supply is abnormal, so that the charging pile system can normally output direct current.
As a technical improvement of the other power supply device, the other power supply device further includes: a charging device; the charging device comprises a first power input end, a first power output end and a logic control device, wherein the first power input end is connected with the power output end of the generator, the first power output end is connected with the power supply end of the energy storage device or/and the power control end of the electric device, and the signal input end of the logic control device is connected with the power output end of the generator, the power output end of the rectifying device or/and the power supply end of the energy storage device.
In the above energy storage device, the energy storage device further includes: an electric energy supplement device; the electric energy supplementing device comprises a device for converting wind energy and solar energy into electric energy and a city power supply device; the power output end of the electric energy supplementing device is connected with the power end of the energy storage device. The electric energy supplementing device is used for supplementing electric energy to the energy storage device.
Based on the charging pile system, the invention also discloses a control method of the charging pile system, which comprises the following steps: the excitation body is positioned in the minimum gap between the excitation body and the magnetic moment wheel and is controlled in a time period from the approach of the rotating magnet to the reference normal line to the coincidence of the rotating magnet and the reference normal line in time sequence rotation; the excitation body is far away from the magnetic moment wheel and is controlled in a time period from the magnetic body crossing the reference normal line to the magnetic body approaching the reference normal line; the reference normal is determined according to the position of the magnetic source when the exciting body is positioned in the minimum gap and the rotating shaft of the magnetic moment wheel; the time sequence rotation is defined according to the rotation direction of the magnetic moment wheel; the rotary magnet is any one of the rotary magnets arranged on the rim of the magnetic moment wheel.
In the control method of the charging pile system, the rotating magnet approaches a reference normal line in time sequence rotation and is positioned at a state moment when theta is at an angle of 90 degrees; and theta is a dynamic included angle formed by the direction of the magnetic attraction generated by the adjacent excitation body and the rotating magnet and the normal component force direction. The rotating magnet approaches to a reference normal line in time sequence rotation, and is a motion state description of the rotating magnet under the influence of the magnetic attraction effect of the exciting body in time sequence rotation.
The application of the charging pile system needs a mechanical support frame piece, and the selected material and structure of the mechanical support frame piece can be arbitrary on the premise of effectively realizing mechanical support.
The charging pile system is essentially different from the conventional technology in that the charging pile system does not adopt a high-frequency switch circuit and a traditional transformer and rectifier, and an exciter driven by an electric device does not have a mechanical energy transmission relation with a magnetic moment wheel, but is converted into torque of the magnetic moment wheel through the attraction effect of the exciter and the opposite magnetic poles of the rotating magnet, so that the magnetic moment wheel drives a generator to rotate to generate power and provides direct current for a charging pile load through the rectifier.
The invention has the advantages that: the charging pile system has the torque increment brought by the energy transfer of the permanent magnet, the electric energy conversion efficiency of the charging pile system can be effectively improved, no high-frequency electromagnetic radiation exists, the output voltage is convenient to adjust, and the charging pile system designed by the scheme has the advantages of simple structure, diversified combination and easy process realization, and is effectively suitable for the design requirements of the application field of the high-end charging pile system.
Drawings
Fig. 1 is a schematic diagram of an operational logic structure of the charging pile system according to the present invention;
FIG. 2 is a schematic diagram of a partial analysis of the magnetic force effect and the dynamic included angle inside the charging pile system;
fig. 3 is a schematic view of a state where the rotary magnet coincides with a reference normal line;
FIG. 4 is a schematic view of a magnetic moment wheel structure with 4 gyromagnetic bodies arranged on a rim;
FIG. 5 is a schematic structural diagram of a magnetic disk-shaped magnetic moment wheel composed of two rings made of different materials;
FIG. 6 is a schematic view of a generator shaft with 2 pairs of exciter/magnetic moment wheels;
FIG. 7 is a diagram illustrating the state of the rotating magnet approaching the reference normal line in time-series rotation according to the present invention;
fig. 8 is a schematic view of a partial structural feature of an embodiment of the charging pile system according to the present invention.
The attached drawings are as follows:
1. exciter 2, electric device 3, magnetic moment wheel
3a, a rotating shaft 3b of the magnetic moment wheel, a rim 3b1 of the magnetic moment wheel, one of the magnetic materials
3b2, two of the rotating magnet materials 3c, a rotating magnet 4, a generator
4a, the axis of rotation 5 of the generator, the minimum clearance 10, the reference normal
11. Excitation body two-pole extension line 13, magnetic action force line 31 and real-time normal line
32. Tangent line 33, magnetic moment wheel plane central line theta, dynamic included angle
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples.
Referring to fig. 1, fig. 1 is a schematic working logic structure of a charging pile system according to the present invention, a dc power conversion of the charging pile system is performed by driving an electric device by a commercial power supply, the electric device drives an exciter, but the exciter does not have a mechanical energy transmission relationship with a magnetic moment wheel, but transfers magnetic force with opposite polarities attracted to each other, and is converted into torque of the magnetic moment wheel through an attraction effect between the exciter and an opposite magnetic pole of a rotating magnet disposed on the magnetic moment wheel, so as to drive a generator to rotate and generate power, and the torque is rectified by a rectifier to output dc power to a charging pile load.
As shown in fig. 2, a gyromagnetic body 3c is arranged on the outer edge of the rim 3b of the magnetic moment wheel 3, the S pole of the gyromagnetic body faces the outer edge, and the N pole faces the rotating shaft 3a; when the N pole of an exciter 1 actively approaches a rotating magnet 3c, the N pole and the rotating magnet generate magnetic attraction along a magnetic action line 13, if the rotating magnet approaches a reference normal 10 determined by the magnetic source position of the exciter 1 and a rotating shaft 3a around the shaft, the magnetic attraction of the exciter 1 can be decomposed into a normal component force tending to the axis and a component force along a tangent 32 direction along a real-time normal 31, wherein a dynamic included angle theta is formed between the direction of the magnetic attraction of the exciter 1 to the rotating magnet 3c and the direction of the normal component force, and can be equivalently described as a dynamic included angle between the magnetic action line 13 and the real-time normal 31; contributing to the rotation of the rotary magnet 3c around the shaft 3a is a component force in the direction of the tangent 32, and the component force is related to the dynamic included angle theta; theta is a motion variable, when the rotor 3c rotates to coincide with the reference normal 10, and theta is 0, the exciter 1 does not contribute to the axial rotation of the rotor 3c, as shown in fig. 3; if θ is a negative angle, that is, if the rotor crosses the reference normal 10 during the time-series rotation, the tangential 32 direction component of the magnetic attraction force of the exciter 1 is a negative direction (opposite to the rotation direction of the magnetic moment wheel 3), and a magnetic resistance force for the rotation of the magnetic moment wheel 3 is generated.
The electric device 2 of the present invention has a function of moving the exciter 1 to the minimum gap 5 with the magnetic moment wheel 3 or moving the exciter 1 to a position far from the magnetic moment wheel 3 under a set displacement logic condition, and as long as the operation logic displacement of the exciter 1 can be realized, the movement form or movement locus of the electric device 2 can be arbitrary, and among them, a reciprocating motor having a good energy saving effect is preferable. Depending on the operating accuracy and reliability requirements, one or several position sensors may be provided, including but not limited to the use of conventional magneto-electric modules, light sensitive elements. The control module is preferably implemented using pulse digital technology, which generally includes: the power supply conversion circuit, the microprocessor with stored working program and the signal input and output circuit can control the output working time sequence current correspondingly through the feedback signal of the position sensor. At present, more control module products are available for programming in the market, and as long as the control precision and the power output power meet the design requirements, various working logics can be met by programming the input/output parameters of the commercially available control modules.
The design shape of the exciter 1 is not limited, the magnetic force line 13 is described based on the relation of the opposite magnetic pole attraction of the exciter 1 and the rotating magnet 3c, and the magnetic source of the magnetic force attraction can be understood as the magnetic pole center of the permanent magnet; for a permanent magnet with a regular shape, such as a bar permanent magnet, the center of the magnetic source can be understood as the two extreme ends of the bar permanent magnet; for the permanent magnet with a complex shape, the center of the magnetic source can be determined through magnetic line experiments. In an example of the integrated design of the exciter 1 and the electric device 2, the exciter 1 can be arranged on the outer edge of the rotor of an outer rotor motor, the N pole of the exciter faces the outer edge, the control module controls the rotation period of the motor, and when the exciter rotates to face the magnetic moment wheel 3 and is positioned on a reference normal line 10 determined by the rotating shaft of the motor and the rotating shaft 3a of the magnetic moment wheel, the N pole equivalent to the exciter is moved to the position of the minimum gap 5 with the rotating magnet 3 c; when the exciter body is rotated further 180 degrees on the extension of the reference normal 10, it is equivalent to the exciter body being moved to a position away from the moment wheel 3.
The magnetic moment wheel is arranged around the rim at least 4 rotating magnets at intervals in the same N/S polar direction, wherein the rotating magnets are arranged at the inner edge, the outer edge or the inner part of the rim, fig. 4 is an example of 4 rotating magnets 3c arranged at the inner edge of the rim 3b, and the outer edge of each rotating magnet is positioned at the outer ring part of the rim; the shape of the rotary magnet is not limited on the premise of not influencing the installation, and the magnetic pole direction of the rotary magnet is preferably 2 typical combination states (N pole faces to the shaft center or S pole faces to the shaft center) that the extension line of the connection line of the N/S two poles points to the shaft center. The magnetic moment wheel is made of nonmagnetic alloy, plastic steel or other solid forming materials, and the structure of the magnetic moment wheel comprises: the magnetic moment wheel has the advantages that the magnetic rotating body 3c and the circular ring 3b2 are conveniently designed and manufactured integrally, and meanwhile the magnetic moment wheel 3 has considerable inertia when rotating by utilizing the quality of the circular ring 3b 1.
The minimum gap 5 between the exciter 1 and the magnetic moment wheel 3 is an energy channel for transmitting the attraction force of the reverse magnetic pole from the exciter 1 to the rotary magnet 3c, the smaller the air gap is, the more favorable the transmission of the energy of the permanent magnet is, for example, a small power supply device is generally only set to be 0.2-2mm, and a medium power supply device is generally set to be 0.5-5 mm. When the magnetic torque of the magnetic moment wheel needs to be increased, the number of the rotary magnets on the magnetic moment wheel 3 is increased, so that the number of the rotary magnets on the magnetic moment wheel is limited to the magnetic effective action interval of the rotary magnets and the magnetic excitation body, and the number of the rotary magnets on the magnetic moment wheel is not more as much as possible. In the invention, the arrangement of the magnetic moment wheels 3 can enable the generator 4 to obtain larger inertia torque; similarly, the magnetic moment wheel is provided with a plurality of excitation bodies 1 which are mechanically and fixedly connected with the electric device 2, so that the generator can obtain larger torque; an example of a combination in which 2 magnetic moment wheels and 2 field magnets are arranged on a rotating shaft 4a of a generator is shown in fig. 6.
The rectifying device has the function of converting alternating current generated by the generator 4 into direct current, and can adopt any rectifying circuit; the working principle of the rotary generator is established in a rotating magnetic field, the internal coil winding obtains alternating current, and if a rectifying device is added to the generator, the generator and the rectifying device are integrally designed; if the control device attached to the energy storage device can directly use the alternating current of the generator, the rectifying device and the control device of the energy storage device are designed integrally. The general functional design of the rectifying device comprises rectification, filtering, voltage limiting/current limiting or intelligent control, and the rectifying device is independently arranged and can also be integrally designed with the charging devices of other power supply devices.
In some areas with abnormal power supply of a commercial power grid, other power supply devices can be additionally arranged on the charging pile system, and the electric device 2 which is correspondingly configured adopts alternating current/direct current driving and depends on the property of a power supply for supplying power; the starting logics of different power supply devices are set according to different application requirements and can be set or logically controlled to be separately used; in practical application of the charging pile system, a charging load is usually not constantly in a full-load working state, time-distributed power fluctuation exists, and electric energy which is not utilized by the charging load can be fed back to the energy storage device through the charging device to supplement the electric energy.
The existing relatively mature electric drive mechanical energy storage devices comprise two types, wherein one type is that a special electric device is arranged to enable the internal structure state of the mechanical device to deform to store mechanical energy, and mechanical energy is provided for the outside through the inverse deformation of the internal structure state when the mechanical energy is released from the outside; the other type is that a special electric device is arranged to compress the atmospheric air to a plurality of atmospheric pressures to store mechanical energy and provide mechanical energy to the outside by recovering the compressed air to the atmospheric pressure when the mechanical energy is released from the outside; when the two types of devices for storing mechanical energy driven by electric power are used, a power generation device is usually additionally arranged to convert the stored mechanical energy into electric energy for outputting.
The invention discloses a control method based on the charging pile system, which comprises the following steps: the excitation body 1 is positioned in the minimum gap 5 with the magnetic moment wheel 3 and is controlled in the time period from the time when the rotating magnet 3c approaches the reference normal 10 to the time when the rotating magnet coincides with the reference normal 10 in the time sequence rotation; the excitation body 1 is far away from the magnetic moment wheel 3 and is controlled in a time period from the time when the rotating magnet 3c crosses the reference normal line 10 to approach the reference normal line 10;
wherein the reference normal 10 is determined according to the position of the magnetic source when the exciter 1 is located in the minimum gap 5 and the rotation axis 3a of the magnetic moment wheel 3; the said time-sequential rotation being defined according to the direction of rotation of the magnetic moment wheel 3; the rotary magnet 3c is any rotary magnet arranged on the rim 3b of the magnetic moment wheel 3.
In the control method of the charging pile system, the rotating magnet 3c approaches the reference normal 10 in time sequence rotation and is located at a state time when θ is 90 degrees; theta is a dynamic included angle formed by the direction of the magnetic attraction generated by the adjacent excitation body 1 and the rotating magnet body 3c and the normal component force direction. An equivalent description of the dynamic angle θ is expressed as a dynamic angle between the magnetic force line 13 and the real-time normal 31, which can be referred to in design, and an angle θ of 90 degrees is a critical state of the effective magnetic attraction between the rotating magnet 3c and the exciter 1 during rotation around the rotation axis 3a, as shown in fig. 7 (fig. 7 shows the motion relationship between the exciter 1 and the magnetic moment wheel 3, and only 1 rotating magnet 3c is marked).
In the above control method, the time period from the time when the rotating magnet 3c approaches the reference normal 10 to the time when the rotating magnet coincides with the reference normal 10 is a time interval for controlling the exciting body 1 to be located in the minimum gap 5 with the magnetic moment wheel 3, and an equivalent description thereof is that the rotating magnet 3c is correspondingly located in a position interval where θ is 90 degrees to 0 degrees; since when θ is 0, the exciter 1 does not contribute to the rotation of the rotor 3c around the rotation axis 3a, and it is not necessary to occupy a position interval where θ is 90 degrees to 0 in the time period where the exciter 1 is located in the minimum gap 5 with the magnetic moment wheel 3 in the actual design, for example: the rotating magnet 3c is controlled to be correspondingly positioned in a position interval where theta is 90-30 degrees.
The electric device 2 moves the exciter 1 away from the magnetic moment wheel 3, and is a relative concept that the exciter 1 does not affect the time sequence rotation of the rotor 3c, and theoretically, magnetic interaction exists no matter how far the two magnets are apart, but as long as the exciter 1 does not have obvious magnetic interaction effect on the time sequence rotation of the rotor 3c, for example, the exciter and the rotor in a small and medium-sized charging pile system are 50mm apart, the exciter can be understood as being far away from the magnetic moment wheel.
The gyromagnets 3c on the magnetic moment wheel 3 refer to all the gyromagnets arranged on the rim 3b, but not to the same gyromagnet, and the period of the gyromagnets 3c approaching/exceeding the reference normal 10 in time sequence rotation is directly related to the number of the gyromagnets 3c arranged on the rim 3 b. When 4 rotating magnets are arranged on the magnetic moment wheel 3, 4 rotating magnets approach/cross the reference normal 10 in each rotation period of the magnetic moment wheel; when 8 gyromagnets are arranged on the magnetic moment wheel, 8 gyromagnets approach/cross a reference normal 10 in each rotation period of the magnetic moment wheel, and so on; in the specific design, attention is particularly paid to the relationship between the number of the rotor magnets 3c and the control period of the electric actuator 2 moving the field body 1 to the minimum gap 5.
The preferred examples are only recommended, a plurality of technical schemes can be partially used, or other mature technologies can be added or combined and used, and the basic aim of the technical scheme of the invention can be realized only by controlling the displacement of the exciting body through the time sequence rotation relation of the rotating magnet according to the periodic magnetic attraction characteristics of the rotating magnet and the exciting body of the magnetic moment wheel.
The technical scheme of the invention is not difficult for professionals who have deep knowledge of the charging pile system, the generator and the motor technology to implement the contents of the invention on the contrary on the basis of the technical scheme. The basic structure of the charging pile system based on the principle of the attraction of the opposite magnetic poles between the permanent magnets, the sequential control method of the electric device and the derivative technical scheme thereof are modified and implemented, and the basic structure, the sequential control method and the derivative technical scheme are all included in the protection scope of the invention.
Examples 1,
The invention relates to a charging pile system, which comprises an exciter 1, an electric device 2, a magnetic moment wheel 3, a generator 4 and a rectifying device; the generator 4 is a conventional rotary generator, and the power output end of the generator is connected with the power input end of the rectifying device; the center of the magnetic moment wheel 3 is provided with a hole which passes through a rotating shaft 4a of the generator 4 and is mechanically and fixedly connected with the generator, so that the installation effect that the axle center of the rotating shaft 3a of the magnetic moment wheel 3 is superposed with the axle center of the rotating shaft 4a of the generator 4 is achieved; the outer edge of the rim 3b of the magnetic moment wheel 3 is provided with 4 rotating magnets 3c, the S pole faces the outer edge of the rim 3b, and the N pole faces the rotating shaft 3a, as shown in FIG. 4; the electric device 2 is an alternating current driven reciprocating motor and comprises a position sensor and a control module, wherein the position sensor is a magnetoelectric module and is arranged on a fixed bracket close to the outer edge of a rim 3b of the magnetic moment wheel 3; the power control end of the reciprocating motor is connected with an alternating current power supply of a commercial power grid, a CPU, a memory and a peripheral circuit thereof are arranged in a control module of the reciprocating motor, the working logics are 1 and 0, and the power supply of the electric device is controlled to be switched on/off to realize position reciprocating action; the 1/0 logic of the control module works according to the signal sent by the position sensor; the exciter 1 is a bar-shaped permanent magnet and is fixedly arranged on the electric device, the N pole of the exciter faces the magnetic moment wheel 3, and the N-S connecting line central line 11 of the exciter 1 is superposed with the plane central line 33 of the magnetic moment wheel 3; the electromotive device 2 is disposed adjacent to the magnetic moment wheel 3.
As shown in fig. 8 (fig. 8 shows the motion relationship between the exciter 1 and the magnetic moment wheel 3 in a highlighted manner, and only 1 rotating magnet 3c is shown), before the charging pile system is started, the operating logic of the control module is 0, the reciprocating electric device does not operate, and the exciter 1 is located at a point B far away from the magnetic moment wheel 3; when the magnetic moment wheel 3 rotates (the rotation can be manually assisted by starting), when the position sensor senses that the rotating magnet 3c on the outer edge of the rim 3b of the magnetic moment wheel 3 approaches a reference normal 10 (theta is 90 degrees, as shown in fig. 7) in time sequence rotation, the position signal is transmitted to the control module in real time, the working logic of the control module is correspondingly changed into 1, the reciprocating motor 2 is controlled to move the exciter 1 to a point A close to the magnetic moment wheel 3 (the optimal value of the minimum gap 5 is calibrated according to the design power of a charging pile system and the material magnetic flux density of the exciter 1 and the rotating magnet 3c in a combined test), so that the magnetic moment wheel 3 obtains a torque increment under the attraction effect of the opposite poles of the exciter 1 and the rotating magnet 3c, and the generator 4 is driven to rotate to generate electricity and output direct current through the rectifying device; when the rotating magnet 3c coincides with the reference normal line 10 (θ is 0) in the time-series rotation until the next time approaches the reference normal line 10, the operation logic of the control module is 0, and the reciprocating motor 2 is controlled to move the exciting body 1 to the point B away from the magnetic moment wheel 3.
The embodiment can realize the purpose of converting alternating current electric energy into direct current electric energy, and compared with the scheme of a transformer and a rectifying circuit, the purpose of adjusting output voltage can be achieved by adjusting the reciprocating frequency of the electric device 2, and the method is not limited by the turn ratio of a primary winding and a secondary winding of the transformer; compared with the AC-DC scheme adopting a high-frequency switching circuit, the high-frequency electromagnetic radiation is not generated; because the working logic of the control module in part of time is 0, the charging efficiency of the charging pile system is higher.
Examples 2,
The magnetic poles of the excitation body 1 and the rotating body 3c described in embodiment 1 are all exchanged, that is, the S pole of the rotating body 3c arranged on the magnetic moment wheel 3 faces the rotating shaft 3a, and the n pole faces the outer edge; the bar-shaped field exciter 1, fixedly installed on the electromotive device 2, is changed such that the S-pole faces the magnetic moment wheel 3. In addition, two magnetic moment wheels 3 are arranged on a rotating shaft 4a of the generator 4, and the rotating shafts 3a of the two magnetic moment wheels 3 are respectively arranged on the rotating shaft 4a of the generator 4; the gyromagnetic bodies 3c on the rims 3b of the two magnetic moment wheels 3 are distributed identically, so that the gyromagnetic bodies can be regarded as one magnetic moment wheel 3 by the longitudinal reference of the rotating shaft 4a of the generator 4; meanwhile, two exciter bodies 1 are respectively arranged corresponding to the two magnetic moment wheels 3, and the two exciter bodies 1 are respectively fixedly arranged on the reciprocating electric device; in the electric device 2, two position sensors are respectively fixedly mounted on the brackets corresponding to the rims 3b of the two magnetic moment wheels 3 (in order to improve the reliability of the sensing signal sources). When installed, the N-S line centerline 11 of the two exciter masses 1 coincides with the planar centerline 33 of the two magnetic moment wheels 3, as shown in fig. 6.
In this embodiment, two magnetic moment wheels arranged on the rotating shaft 4a of the generator 4 can be regarded as one magnetic moment wheel 3; similarly, two exciter bodies provided on the same reciprocating electric apparatus 2 can be regarded as one exciter body 1; the position signal acquisition of the two gyromagnetic bodies 3c on the magnetic moment wheel and the displacement action control of the two excitation bodies are similar to those described in embodiment 1. In the embodiment, the two excitation bodies 1 are used for periodically magnetically attracting the two magnetic moment wheels 3, so that the inertia torque of the generator 4 can be effectively increased, and the rectifying device outputs a direct-current power supply with higher power.
Examples 3,
In the embodiment 1, the rotating shaft 3a of the magnetic moment wheel 3 is coaxially arranged with the rotating shaft 4a of the generator 4, the shaft of the magnetic moment wheel 3 is sleeved on a speed change mechanical device which is fixedly sleeved on the rotating shaft 4a of the generator 4, and the axle center of the magnetic moment wheel 3, the axle center of the speed change mechanical device and the axle center of the rotating shaft 4a of the generator 4 are superposed. In addition, the discoid magnetic moment wheel 3 is formed by combining two rings made of different materials, wherein the ring 3b2 is made of ABS, and the ring 3b1 is made of nonmagnetic alloy.
The rest of the component setting and the working logic control method in this embodiment are the same as those described in embodiment 1.
The rotating speed of the generator 4 of the embodiment is not limited to be the same as that of the magnetic moment wheel 3, so that another path of alternating current output with adjustable frequency can be obtained at the power output end of the generator 4.
Examples 4,
A group of nominal 48V2000Ah aluminum air primary battery packs and a 48V direct-current power supply driven reciprocating electric device 2 are additionally arranged on the basis of the embodiment 1, and the power supply output end of each aluminum air battery pack is connected with the power supply control end of the electric device 2; the operation logic of the dc electric device and the ac electric device 2 of embodiment 1 is or, additionally or logically, implemented by a logic control device: or using a city network alternating current power supply/alternating current electric device, or using an aluminum air battery pack power supply/direct current electric device; the rest of the component setting and the working logic control method are the same as those described in embodiment 1.
The embodiment is suitable for some areas with abnormal power supply of the commercial power grid, and when the commercial power grid supplies power normally, the commercial power grid AC power supply and the AC-driven electric device 2 are used for working; when the commercial power grid does not supply power, the aluminum air primary battery pack power supply and the electric device 2 driven by direct current work, and the direct current power supply with adjustable voltage is obtained through the rectifying device. The aluminum-air battery has the advantages of high specific energy by weight and irreplaceable advantages in application occasions needing convenient movement, and particularly, when the internal electrode of the aluminum-air battery device is completely dissolved or the internal electrolyte is completely saturated, the aluminum-air battery can continue to work by replacing the electrode/electrolyte, and the replacement of the electrode or the replacement of the electrolyte can be regarded as a deformed electric energy supplement method (which is commonly called mechanical charging in the industry).
Examples 5,
The aluminum-air primary battery pack described in example 4 was replaced with a lead-acid battery pack of the same nominal 48V2000Ah, and a conventional solar device and its power control device were added to supplement the electric power to the lead-acid battery pack, the power control device being connected to the power terminals of the lead-acid battery pack. In the embodiment, when the commercial power grid normally supplies power, the commercial power grid alternating current power supply and the alternating current driven electric device 2 are used for working; when the commercial power grid does not supply power, the lead-acid battery pack power supply and the direct-current driven electric device 2 work, and the direct-current charging power supply with adjustable voltage is obtained through the rectifying device. The solar device and the power supply control device thereof are added to supplement electric energy when the electric energy of the lead-acid battery pack is insufficient.
Examples 6,
On the basis of the embodiment 5, a charging device is added to form another charging pile system; the discharging load of the charging pile system can be a lighting user group or an electronic instrument, and can also be other electric equipment.
In this embodiment, the charging device includes a first power input terminal, a first power output terminal, and a logic control device, the first power input terminal is connected to the power output terminal of the generator 4, the first power output terminal is connected to the power terminal of the lead-acid battery pack and the power control terminal of the electric device 2, and the signal input terminal of the logic control device is connected to the power terminal of the lead-acid battery pack and the power output terminal of the rectifying device; the logic control device in the charging device is internally provided with a CPU, a memory and a working peripheral circuit thereof, and is internally provided with a program for controlling the working logic of the charging device, and the working logic of the charging device is as follows: and monitoring the output voltage of the rectifying device in real time, and starting the charging device to charge the lead-acid battery pack in a charging mode of limiting the current by 200A at a constant voltage of 53.52V when the real-time output voltage of the rectifying device is higher than the designed average value of the output voltage and the voltage at two ends of the lead-acid battery pack is lower than 50.40V.
This embodiment can provide alternating current power supply for external load through the power output of generator 4, also can provide the direct current charging power supply of adjustable voltage for filling electric pile load through the power output of fairing.
Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the claims.
Claims (10)
1. A charging pile system is characterized by comprising an exciter (1), an electric device (2), a magnetic moment wheel (3), a generator (4) and a rectifying device; the magnetic moment wheel (3) surrounds the rim (3 b) and is provided with at least 4 rotating magnets (3 c) at intervals in the same N/S polar direction, and a rotating shaft (3 a) of the magnetic moment wheel is fixedly connected with a rotating shaft (4 a) of the generator coaxially or is driven by a speed change device; the generator (4) is rotary, and the power output end of the generator is connected with the power input end of the rectifying device; the electric device (2) is mechanically and fixedly connected with the excitation body (1); the magnetic polarity of the excitation body (1) facing the magnetic moment wheel (3) is opposite to the magnetic polarity of the rotating magnet (3 c) facing the outer edge of the magnetic moment wheel (3);
the electric device (2) comprises a position sensor and a control module, and a power supply control end of the electric device is connected with a mains supply or other power supply devices; the position sensor is arranged at a fixed part close to the magnetic moment wheel (3), and the signal output end of the position sensor is connected with the working logic signal input end of the control module; the electric device (2) and the magnetic moment wheel (3) are arranged adjacently;
when the magnetic moment wheel (3) rotates, the position sensor acquires a relative position signal of time sequence rotation of the rotating magnet (3 c), the control module controls the electric device (2) to move according to the signal and set logic, the exciter (1) is respectively positioned in a minimum gap (5) with the magnetic moment wheel (3) or far away from the magnetic moment wheel (3), the magnetic moment wheel (3) drives the generator (4) to rotate and generate electricity through the periodic opposite magnetic pole attraction of the exciter (1) and the rotating magnet (3 c), and therefore direct current is provided for a charging pile load through the power output end of the rectifier device.
2. Charging pile system according to claim 1, characterized in that the excitation mass (1) is located with a minimum gap (5) to the magnetic moment wheel (3) with a distance between the excitation mass (1) and the rotating magnet (3 c) not exceeding 40mm.
3. Charging pile system according to claim 1, characterized in that the magnetic moment wheel (3), the electric device (2) and the exciter mass (1) are arranged in the charging pile system in at least 1 number each.
4. Charging pile system according to claim 1, characterised in that the magnetic moment wheel (3) consists of more than 2 layers of different materials in the shape of a ring.
5. Charging pile system according to claim 1, characterised in that the exciter body (1) and the electric device (2) are designed in one piece.
6. The charging pile system according to claim 1, wherein said other power supply means comprises: primary battery means or/and energy storage means, means for converting thermodynamic mechanical energy into electrical energy; the energy storage device comprises a secondary battery or/and an electric driven mechanical energy storage device.
7. The charging pile system according to claim 1 or 6, wherein the other power supply means further comprises: a charging device; the charging device comprises a first power input end, a first power output end and a logic control device, wherein the first power input end is connected with the power output end of the generator (4), the first power output end is connected with the power supply end of the energy storage device or/and the power supply control end of the electric device (2), and the signal input end of the logic control device is connected with the power output end of the generator (4), the power output end of the rectifying device or/and the power supply end of the energy storage device.
8. The charging pile system according to claim 6, wherein said energy storage device further comprises: an electric energy supplement device; the electric energy supplementing device comprises a device for converting wind energy and solar energy into electric energy and a city power supply device; the power output end of the electric energy supplementing device is connected with the power end of the energy storage device.
9. The control method of the charging pile system according to any one of claims 1 to 8, the method comprising: the exciter body (1) is positioned in a minimum gap (5) with the magnetic moment wheel (3) and is controlled in a time period from the approach of the rotating magnet body (3 c) to the reference normal (10) in time sequence rotation to the coincidence with the reference normal (10); the excitation body (1) is far away from the magnetic moment wheel (3) and is controlled in a time period from the moment magnet (3 c) crossing the reference normal (10) to approach the reference normal (10); wherein the reference normal (10) is determined according to the position of the magnetic source when the excitation body (1) is positioned in the minimum gap (5) and the rotating shaft (3 a) of the magnetic moment wheel (3); said time-sequential rotation being defined according to the direction of rotation of the magnetic moment wheel (3); the rotating magnet (3 c) is any rotating magnet arranged on the rim (3 b) of the magnetic moment wheel (3).
10. The control method according to claim 9, wherein the rotary magnet (3 c) approaches a reference normal (10) in time series rotation at a state time when θ is 90 degrees; theta is a dynamic included angle formed by the direction of the magnetic attraction generated by the adjacent excitation body (1) and the rotating magnet (3 c) and the normal component force direction.
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Application publication date: 20181218 |