CN108964416A

CN108964416A - Energy storage system

Info

Publication number: CN108964416A
Application number: CN201810856208.1A
Authority: CN
Inventors: 刘粤荣; 刘曦
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-31
Filing date: 2018-07-31
Publication date: 2018-12-07

Abstract

The energy storage system comprises an energy storage device and a charging system; the energy storage device comprises a secondary battery or/and an electrically driven mechanical energy storage device; the charging system comprises an electric wheel, a motor, a magnetic moment wheel, a generator and a rectifying device; the motor is connected with an external power supply; the motor is in transmission with the electric wheel; at least 4 moving magnets are evenly distributed on the electric wheel surrounding the rim at intervals, and the arc distance between the outer edges of the moving magnets is m; at least 4 rotating magnets are evenly distributed on the magnetic moment wheel at intervals around the wheel rim, and the arc distance between the outer edges of the rotating magnets is n; m and n are equal; the electric wheel is arranged adjacent to the magnetic moment wheel; the magnetic moment wheel is in transmission with the generator; the generator is connected with the rectifying device; the rectifying device is connected with the energy storage device; when the motor drives the electric wheel to rotate, the distribution state of a gap magnetic field in the charging system is changed in a reciprocating mode, so that the magnetic moment wheel obtains torque to drive the generator to rotate to generate electricity, and the energy storage device is stored through the rectifying device.

Description

Energy storage system

Technical Field

The invention relates to the field of application design of energy storage devices, in particular to an energy storage system designed by using the magnetic field effect of a permanent magnet material and the working principle of a motor and a generator.

Background

Energy storage systems generally refer to devices for storing electrical energy, typically chemical power sources as well as mechanical energy storage devices; chemical power sources are generally divided into primary batteries and secondary batteries, wherein the primary batteries are disposable batteries including but not limited to zinc-manganese batteries and aluminum-air membrane batteries; the secondary battery is a battery that can be repeatedly charged and discharged for use, and includes, 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.

The early application of the energy storage device is based on peak clipping and valley filling of a power grid or matching with a wind energy and solar energy device, and the energy storage device is developed to be used in a home in recent years; in specific application, whether the voltage is increased or reduced by converting the voltage into alternating current or direct current, the technology mainstream adopts an AC-DC (alternating current-direct current), DC-AC or DC-DC circuit, a high-frequency switching circuit is hidden, and high-frequency electromagnetic radiation which is generated along with the high-frequency switching circuit is difficult to ignore when the power is larger. Accordingly, in many fields, it is desirable to find an electric energy conversion device that does not require worry about high frequency electromagnetic radiation. One regressive thought is to use a motor to drive a generator instead of a high-frequency switching circuit, but the conventional technology has low electric energy conversion efficiency, and various auxiliary mechanical energy devices such as a rotating shaft and a flywheel of the generator are proposed in the industry.

The design idea of the energy storage 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 part of 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 part of 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 to the electric energy conversion field design completely, and this application is exactly based on one kind and produces magnetic energy exchange at the wheel edge of magnetic moment wheel and make its acting, hidden energy in the full play permanent magnet to utilize the rotatory inertia of magnetic moment wheel to continuously obtain the torque increment, drive magnetic moment wheel and generator rotation, thereby it is right to realize through the generator electricity generation and through fairing energy memory's electric energy storage.

Disclosure of Invention

The invention aims to overcome the design defect that the conventional energy storage device is limited to adopt a high-frequency switch circuit for electric energy conversion, and provides an electric energy conversion technical scheme which increases torque of a magnetic moment wheel by using a periodic magnetic force effect and drives a generator to generate electricity through the magnetic moment wheel, so that the design purposes of an energy storage system which avoids high-frequency electromagnetic radiation and is convenient for adjusting charging power are achieved, the structure is simple, and the process is easy to realize.

In order to achieve the above technical object, the present invention provides an energy storage system, which includes an energy storage device and a charging system; the energy storage device comprises a secondary battery or/and an electric driven mechanical energy storage device; the charging system comprises an electric wheel, a motor, a magnetic moment wheel, a generator and a rectifying device; the motor is rotary, and the power supply control end of the motor is connected with an external power supply device; the rotating shaft of the motor is coaxially and fixedly connected with the rotating shaft of the electric wheel or is driven by a speed change/torque change device; the electric wheel is uniformly provided with at least 4 moving magnets at intervals around the rim, and the arc distance between the outer edges of the moving magnets is m; the magnetic moment wheel is provided with at least 4 rotating magnets at intervals around the wheel ring, and the arc distance between the outer edges of the rotating magnets is n; the arc spacing m is equal to the arc spacing n; the moving magnet and the rotating magnet are made of permanent magnet materials; the electric wheel is arranged adjacent to the magnetic moment wheel; the rotating shaft of the magnetic moment wheel is coaxially and fixedly connected with the rotating shaft of the generator or is driven by a speed changing 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 power supply output end of the rectifying device is connected with the power supply input end of the energy storage device;

when the motor drives the electric wheel to rotate, the distribution state of a gap magnetic field between the outer edge of the movable magnet and the outer edge of the rotating magnet is changed in a reciprocating mode, so that the magnetic moment wheel obtains torque to drive the generator to rotate and generate electricity, and the energy storage device is charged through the rectifying device to achieve electric energy storage.

In the invention, the moving magnet and the rotating magnet are made of magnetic steel, neodymium iron boron and other permanent magnets known by persons skilled in the art, and different names are only used for clearly expressing the arrangement position and the movement characteristics of the moving magnet and the rotating magnet. The secondary battery comprises a lead-acid battery, a lithium battery, a nickel-hydrogen battery, a nickel-zinc battery and a zinc-air secondary battery, and the secondary battery comprises a secondary battery pack formed by connecting a plurality of secondary single batteries in series/parallel; the mechanical energy storage device driven by electric power comprises a device which uses an electric device to make the internal structure of the mechanical device generate reversible deformation and uses the electric device to store mechanical energy in the form of compressed air.

In the technical scheme of the energy storage system, at least 1 electric wheel and at least 1 magnetic moment wheel are respectively arranged in the energy storage system. The arrangement of the magnetic moment wheels is beneficial to enhancing the output of inertia torque, but has high requirement on mechanical strength; providing a plurality of motorized wheels facilitates increasing the torque of the magnetic moment wheels.

In the technical scheme of the energy storage system, the moving magnet and the rotating magnet are arranged in the same polar direction by taking respective rotating shafts as references, or are arranged in an N-S alternating mode of magnetic poles.

In the technical scheme of the energy storage system, the electric wheel and the magnetic moment wheel are adjacently arranged to form a gap between the outer edge of the moving magnet and the outer edge of the rotating magnet, wherein the gap is not more than 60mm. The gap is the distance between the moving magnet and the rotating magnet which are positioned on the normal line (the normal line is determined by the rotating shaft of the electric wheel and the rotating shaft of the magnetic moment wheel), and the gap is selected according to the power design of the energy storage system and the material magnetic flux density of the moving magnet and the rotating magnet.

In the technical scheme, the electric wheel or/and the magnetic moment wheel is/are made of different annular materials with more than 2 layers.

The technical scheme of the energy storage system comprises the integrated design of the electric wheel and the electric motor.

In a technical solution of the above energy storage system, the energy storage device further includes: a discharge device; the power input end of the discharging device is connected with the power end of the energy storage device, and the power output end of the discharging device provides power for the discharging load. The discharging load also comprises a motor in the charging system; when the power supply of the energy storage device is used for driving the motor to work, alternating current power supply can be obtained at the power supply output end of the generator.

In the technical scheme of the energy storage system, the external power supply comprises a primary battery device or a commercial power supply device and a power supply device for converting wind energy, solar energy and thermal power mechanical energy into electric energy. The primary battery comprises but is not limited to a zinc-manganese battery, a zinc-air battery, an aluminum-air battery and a primary battery pack formed by connecting a plurality of primary single batteries in series/parallel; the urban power supply comprises a civil 220V, industrial 380V or other voltage-powered alternating-current power supply device and a direct-current power supply which may appear in the urban power grid in the future; the thermal power mechanical energy comprises mechanical energy obtained by using a thermal power machine such as fuel oil, steam and the like.

Based on the technical scheme of the external power supply, the invention also discloses an electric energy supplementing method of the external power supply, which comprises the following steps: and replacing the electrode and the electrolyte for the primary battery. The electric energy supplementing method for replacing the electrodes and the electrolyte is used for weighing mechanical charging in the battery industry.

The application of the energy storage system needs a mechanical support frame piece, and the material and the structure of the mechanical support frame piece can be selected arbitrarily on the premise of effectively realizing mechanical support.

The energy storage system is essentially different from the conventional energy storage system in technical application, in that the charging system does not adopt a conventional high-frequency switch circuit and is not subjected to rectification charging by a conventional transformer, an electric wheel driven by a motor does not have a mechanical energy transmission relation with a magnetic moment wheel, the energy transmission of the electric wheel and the magnetic moment wheel is converted into the torque of the magnetic moment wheel by changing the distribution state of a gap magnetic field between permanent magnets of the electric wheel and the magnetic moment wheel, and when the magnetic moment wheel has certain mass and enough rotating speed, a generator can be driven to rotate to generate electricity and the energy storage device is subjected to electric energy storage by a rectification device.

The invention has the advantages that: the charging system has torque increment brought by magnetic energy transmission of the permanent magnet, can effectively improve the electric energy conversion efficiency of charging the energy storage device, has no high-frequency electromagnetic radiation, is convenient to adjust the charging voltage, and has the advantages of simple structure, diversified combination and easy process, and can effectively meet the design requirements of the application field of high-end energy storage systems.

Drawings

FIG. 1 is a schematic diagram of the logical structure of the energy storage system of the present invention;

FIG. 2 is a schematic view of a motorized wheel having 4 moving magnets on the rim;

FIG. 3 is a schematic view of a magnetic moment wheel with 8 electromagnets on the rim;

FIG. 4 is a schematic illustration of a static analysis of the local structural relationship between the electric wheel and the magnetic moment wheel;

FIG. 5 is a schematic diagram illustrating a dynamic analysis of the local structural relationship between an electric wheel and a magnetic moment wheel;

FIG. 6 is a schematic diagram of a magnetic moment wheel formed by two rings of different materials assembled into a disk;

FIG. 7 is a schematic diagram of a configuration in which 2 motorized wheels are configured for 2 magnetic moment wheels;

fig. 8 is a schematic diagram of another dynamic analysis of the local structural relationship between the motorized wheel and the magnetic moment wheel.

The attached drawings are as follows:

1. electric wheel 1a, electric wheel rotating shaft 1b, electric wheel rim 1c and moving magnet

2. Motor 3, magnetic moment wheel 3a, magnetic moment wheel rotating shaft 3b, magnetic moment wheel rim

3c, rotating magnet 4, spacing 5, generator 5a and generator rotating shaft

10. Normal line 11, electric wheel plane central line 13, magnetic force line 32 and tangent line

33. A magnetic moment wheel plane center line 3b1, one of the rotating magnet materials 3b2, and two of the rotating magnet materials

Detailed Description

The present invention will be further described in detail with reference to the drawings and examples.

Referring to fig. 1, a logic structure diagram is a schematic diagram of a basic working structure of the energy storage system according to the present invention, an electric energy storage path is that an external power source drives a motor 2, the motor 2 drives an electric wheel 1, but the electric wheel 1 does not have a mechanical energy transmission relationship with a magnetic moment wheel 3, but transmits variable magnetic field energy, and energy transmitted between permanent magnets is converted into torque of the magnetic moment wheel 3 by changing a distribution state of a magnetic field in a gap between the electric wheel 1 and the magnetic moment wheel 3, so as to drive a generator 5 to rotate and generate electricity, and the energy storage device is a rectifier device to store electric energy.

In one embodiment, an energy storage system includes an energy storage device and a charging system; the energy storage device uses a lead-acid battery pack in the secondary battery; the charging system comprises an electric wheel 1, a motor 2, a magnetic moment wheel 3, a generator 5 and a rectifying device; the motor 2 is rotary, and the power supply control end of the motor is connected with an external power supply; the rotating shaft of the motor 2 is coaxially and fixedly connected with the rotating shaft 1a of the electric wheel 1, and the electric wheel 1 is driven to rotate in a shaft transmission mode; the electric wheel 1 is made of plastic steel, 4 moving magnets 1c (N pole faces to the rotating shaft 1a, S pole faces to the outer edge, as shown in fig. 2) are evenly distributed around the rim 1b at intervals, and the arc distance between the outer edges of the moving magnets 1c is m; the magnetic moment wheel 3 is made of nonmagnetic alloy, 8 rotating magnets 3c (the S pole faces the rotating shaft 3a, the N pole faces the outer edge, as shown in figure 3) are evenly distributed around the rim 3b at intervals, and the arc distance between the outer edges of the rotating magnets 3c is n; the arc spacing m is equal to the arc spacing n; the moving magnet 1c and the rotating magnet 3c are both made of neodymium iron boron materials; the electric wheel 1 and the magnetic moment wheel 3 are arranged adjacently, and a gap 4 between the outer edge of the movable magnet 1c and the outer edge of the rotating magnet 3c is determined by the design power of an energy storage system and a material magnetic flux density combination experiment; a rotating shaft 3a of the magnetic moment wheel 3 is coaxially and fixedly connected with a rotating shaft 5a of the generator 5; the power output end of the generator 5 is connected with the power input end of the rectifying device; and the power output end of the rectifying device is connected with the power end of the lead-acid battery pack.

In this embodiment, when the external power supply does not supply power to the motor 2 to drive the electric wheel 1 to rotate, the moving magnet 1c and the rotating magnet 3c are naturally disposed on a normal 10 determined by the rotating shaft 1a of the electric wheel 1 and the rotating shaft 3a of the magnetic moment wheel 3 together due to the magnetic attraction relationship of opposite magnetic poles, as shown in fig. 4 (only 1 moving magnet 1c and 1 rotating magnet 3c are marked in fig. 4 for clearly indicating the structural relationship between the electric wheel 1 and the magnetic moment wheel 3); when the electric motor 2 drives the electric wheel 1 to rotate, the magnetic field distribution between the moving magnet 1c and the rotating magnet 3c is changed in state due to external action, which is represented by that the moving magnet 1c generates a magnetic attraction force along the direction of the magnetic action line 13 to the rotating magnet 3c, and the magnetic attraction force is decomposed into component forces along the direction of the normal 10 and the direction of the tangent 32, wherein the component force along the direction of the tangent 32 drives the magnetic moment wheel 3 to tend to rotate around the rotating shaft 3a, and the dynamic schematic is shown in fig. 5; if the motor 2 continuously drives the electric wheel 1 to rotate, the magnetic moment wheel 3 is continuously driven, the magnetic moment wheel 3 drives the generator 5 to rotate through the rotating shaft 3a to generate electricity, and the electric energy of an external power supply is stored in a lead-acid battery pack serving as an energy storage device through the rectifying device.

The external power source of this embodiment may be a primary battery or a primary battery pack, or a commercial power grid ac power source, and may also be a power supply device for converting wind energy, solar energy, thermal mechanical energy into electrical energy. The external power source is used for driving the motor 2 to work, and the motor 2 can adopt a direct current motor or an alternating current motor, and the adoption of the direct current motor or the alternating current motor depends on the nature of the power source for supplying power to the motor.

One of the main advantages of the energy storage system is that the charging voltage is convenient to adjust, the purpose of controlling the output power can be achieved by controlling the rotating speed of the motor 2, meanwhile, a high-frequency switch circuit is not hidden in the charging system, the high-frequency electromagnetic radiation interference generated along with the high-frequency switch circuit can be avoided, particularly the influence on the health of employees can be avoided, and when the power of the charging system is high, the special advantage of the charging system is more obvious.

The energy storage device is not limited to a secondary battery that can be repeatedly charged and discharged, but includes an electrically driven mechanical energy storage device. The existing relatively mature electric drive mechanical energy storage devices comprise two types, wherein one type is that an electric device is used for enabling the internal structure state of a 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 an electric device is used for compressing 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 output.

The arc spacing m between the outer edges of the moving magnets 1c is equal to the arc spacing n between the outer edges of the rotating magnets 3c, and the design key point of the energy storage system is that as long as m and n are equal and the electric wheels 1 rotate continuously, the moving magnets 1c can periodically transmit magnetic energy to the rotating magnets 3 c. The magnetic force line 13 is described based on the relationship of the action of the moving magnet 1c on the rotating magnet 3c, and the magnetic source of the magnetic force action 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.

The moving magnets 1c are evenly distributed at intervals around the rim 1b of the electric wheel 1, and the rotating magnets 3c are evenly distributed at intervals around the rim 3b of the magnetic moment wheel 3, specifically, the moving magnets 1 c/the rotating magnets 3c can be arranged at the inner edge, the outer edge or the inner part of the rim; FIG. 2 is an example of a moving magnet 1c disposed on the inner edge of a rim 1b, the outer edge of the moving magnet 1c being located at the outer portion of the rim 1 b; fig. 3 shows an example in which a rotary magnet 3c is provided on the inner edge of the rim 3b, and the outer edge of the rotary magnet 3c is located on the outer circumference of the rim 3 b. The moving magnet 1c and the rotating magnet 3c are not limited in shape without affecting mounting on the respective rims, and 2 typical combinations of magnetic pole directions provided on the respective rims, in which an extension line of a connection line of N/S two poles is directed to the axis of the rotating shaft (N pole facing the axis or S pole facing the axis) are preferable.

In the invention, the materials of the electric wheel 1 and the magnetic moment wheel 3 have different characteristics. The design requirement of the magnetic moment wheel 3 is that the magnetic moment wheel 3 has certain inertia mass, so that the magnetic moment wheel 3 can be compounded with certain rotational inertia, and the rotating speed of the driving generator 5 is improved, therefore, the magnetic moment wheel 3 is suitable to be made of nonmagnetic alloy with higher specific gravity; as the motorized wheel 1 for transmitting magnetic energy to the magnetic moment wheel, although the design is also required to have a certain mass, it is allowed to be manufactured by using a material having a relatively small specific gravity, for example, plastic steel, ABS or other solid forming material. The structure of electric wheel 1 and magnetic moment wheel 3 includes: the disc or the rings are combined, the rings are combined into the disc in a coaxial mode, or the rings are fixedly connected into a whole through a structural fastener, and the disc or the rings are designed and manufactured integrally. Fig. 6 is an example of a disc-shaped magnetic moment wheel 3 formed by combining two circular rings made of different materials, the material of the circular ring 3b2 is ABS, the material of the circular ring 3b1 is nonmagnetic alloy, and the combined disc has the advantages that the integrated design and manufacture of the rotating magnet body 3c and the circular ring 3b2 are convenient, and at the same time, the mass of the circular ring 3b1 is utilized to ensure that the magnetic moment wheel 3 has considerable inertia when rotating.

The electric wheel 1 and the magnetic moment wheel 3 are arranged adjacently, and the gap between the outer edge of the moving magnet 1c and the outer edge of the rotating magnet 3c, which are periodically opposite to each other, does not exceed 60mm, and the moving magnet 1c and the rotating magnet 3c are both located on a normal 10 determined by the rotating shaft 1a of the electric wheel 1 and the rotating shaft 3a of the magnetic moment wheel 3, and the schematic of the state is shown in fig. 4 locally. The gap 4 is an energy channel for transmitting magnetic acting force from the moving magnet 1c to the rotating magnet 3c, the smaller the gap is, the more beneficial the effect transmission of magnetic energy between the permanent magnets is, for example, the small power generation device is generally only set to be 0.2-2mm, the medium power generation device is generally set to be 1-10mm, the invention has the technical purpose of limiting the gap 4 to be 60mm, and the invention is to consider the requirement of a large energy storage system and the appearance of super strong magnetic materials in the future.

The motor 2 functions to convert the electric energy of an external power supply into rotational mechanical energy, and whether an alternating current motor or a direct current motor is adopted depends on the nature of the power supply supplying the motor; in an example of the integrated design of the motor 2 and the electric wheel 1, the moving magnet 1c can be arranged at the outer edge of the rotor of the outer rotor structure motor 2, so that the functions of the electric wheel and the motor are integrated into a whole; the electric motor 2 may be additionally provided with control means, such as means for controlling the rotational speed of the motor; the mechanical transmission of the motor and the electric wheel belongs to the mature technology, and one preferred scheme is that the motor and the electric wheel are designed on a rotating shaft 1a of the electric wheel 1 and can be selected to be fixedly connected with the same axle center or adopt belt pulleys and gear transmission.

The rectifying device has the function of converting alternating current electric energy generated by the generator 5 into direct current to charge the energy storage device, and can adopt a rectifying circuit with any design form; the working principle of the rotary generator is established in an internal rotating magnetic field, an internal coil winding obtains alternating current, and if a rectifying device is added to the configured generator 5, the generator 5 and the rectifying device are integrally designed; if the control device of the energy storage device can directly use the alternating current power of the generator 5, the rectification 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 a discharging device included in the energy storage device.

In the embodiment of fig. 5, the magnetic moment wheel 3 is provided with only 8 magnetors 3c, and when the torque of the magnetic moment wheel due to the magnetic force needs to be increased, the magnetors can be additionally provided, for example, 12 magnetors 3c can be provided on the rim 3b of the magnetic moment wheel 3; similarly, a greater number of moving magnets 1c can be added to the rim 1b of the electric wheel 1, and the basic principle that m and n are equal needs to be grasped during design. The more moving magnets/rotating magnets on the electric wheel/magnetic moment wheel are arranged, the better the moving magnets/rotating magnets are arranged, and the number of the moving magnets/rotating magnets arranged on the rim is limited by the effective action range of the magnetic force of the rotating magnets and the moving magnets.

The optimal design of the motorized wheel 1, the magnetic moment wheel 3, the moving and rotating magnets and the gap 4 is based at least on the following considerations: because the normal component force of the gyromagnetic body on the magnetic moment wheel under the magnetic interaction does not contribute to the torque of the magnetic moment wheel, the optimized design is the interaction relation jointly determined by a plurality of factors such as the rotating speed interval of the electric wheel, the number of the rotating magnets on the electric wheel and the gyromagnetic body on the magnetic moment wheel, the gap 4 between the rotating magnets and the gyromagnetic body periodically opposite to each other, and the like, the magnetic interaction tangential component force on the gyromagnetic body on the magnetic moment wheel is enabled to be beneficial to changing the magnetic field distribution state as much as possible and is converted into the torque of the magnetic moment wheel. In the same energy storage system, a plurality of magnetic moment wheels 3 are arranged to obtain larger inertia torque; similarly, for the same magnetic moment wheel, a plurality of electric wheels 1 are arranged, so that the magnetic moment wheel can obtain larger torque; a combined embodiment of configuring 2 magnetic moment wheels and 2 motorized wheels in an energy storage system is shown in fig. 7.

The external power supplies can be selectively used and can also be used logically. The electric wheel 1 driven by an external power source is converted into a torque of the magnetic moment wheel 3 by the action of a gap magnetic field between the moving magnet 1c and the rotating magnet 3c, the torque includes not only magnetic energy changed based on the distribution state of the gap magnetic field, but also the rotational inertia of the magnetic moment wheel 3, and when the magnetic moment wheel 3 has a certain mass and the rotational speed of the magnetic moment wheel 3 is sufficient, the rotational inertia of the magnetic moment wheel 3 cannot be ignored, so that a rotary generator driven by the magnetic moment wheel 3 obtains higher conversion efficiency.

The energy storage system can be used in parallel by a plurality of sets, can also be used in series by a plurality of sets, and can also be added with other electric energy management control systems when used in series or/and in parallel. The energy storage systems can be used in series, and the premise is that the output power of the energy storage systems is approximately the same; the energy storage systems can be used in parallel, and the premise is that the output voltages of the energy storage systems are the same.

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 the magnetic force action relationship between the rotating magnet and the moving magnet according to the periodic magnetic force relationship characteristics of the magnetic moment wheel and the electric wheel.

The technical scheme of the energy storage system is based on the technical scheme of the invention, and the contents of the patent application of the invention are implemented in a counter-third way. The basic structure of the energy storage system and the charging system based on magnetic driving and the modified implementation of the derived technical scheme thereof, which are described in the present application, should be included in the protection scope of the present application.

Examples 1,

An energy storage system comprising an energy storage device and a charging system; the energy storage device adopts a lead-acid battery pack; the charging system comprises an electric wheel 1, a motor 2, a magnetic moment wheel 3, a generator 5 and a rectifying device; the motor 2 is driven by a nominal 48V direct current and rotates, and the power supply control end of the motor is connected with a nominal 48V primary aluminum air battery pack; the rotating shaft of the motor 2 is coaxially and fixedly connected with the rotating shaft 1a of the electric wheel 1, and the electric wheel 1 is driven to rotate in a shaft transmission mode; a partial schematic of the adjacent arrangement of motorized wheel 1 and magnetic moment wheel 3 is shown in fig. 4 (static view); the electric wheel 1 is made of plastic steel, 4 moving magnets 1c are evenly distributed around the rim 1b at intervals, the N pole of each moving magnet faces the rotating shaft 1a, the S pole faces the outer edge (as shown in figure 2), and the arc distance between the outer edges of the moving magnets is m; the magnetic moment wheel 3 is made of nonmagnetic alloy, 8 rotating magnets 3c are evenly distributed around the rim 3b at intervals, the S pole of each rotating magnet faces the rotating shaft 3a, the N pole of each rotating magnet faces the outer edge (as shown in figure 3), and the arc distance between the outer edges of the rotating magnets is N; the arc spacing m is equal to the arc spacing n; the moving magnet 1c and the rotating magnet 3c are made of neodymium iron boron materials; the electric wheel 1 and the magnetic moment wheel 3 are arranged adjacently (the gap 4 between the outer edge of the moving magnet 1c and the outer edge of the rotating magnet 3c is determined by the design power of a charging system and the material magnetic flux of the moving magnet and the rotating magnet in combination with experiments); a rotating shaft 3a of the magnetic moment wheel 3 is coaxially and fixedly connected with a rotating shaft 5a of the generator 5; the power output end of the generator 5 is connected with the power input end of the rectifying device; the rectifying device has the functions of rectifying, filtering, constant voltage and limiting current, and the power output end of the rectifying device is connected with the power supply end of the lead-acid battery pack.

In this embodiment, when the aluminum-air battery pack supplies power to the electric motor 2 to drive the electric wheel 1 to rotate, the moving magnet 1c generates a magnetic attraction component force along a tangential line 32 direction to the rotating magnet 3c, and drives the magnetic moment wheel 3 to generate a trend of rotating around the rotating shaft 3a, as shown in fig. 5 (only characteristic relations between 1 moving magnet 1c and 1 rotating magnet 3c are marked on schematic structures of the electric wheel 1 and the magnetic moment wheel 3 in fig. 5), so that the magnetic moment wheel 3 drives the electric generator 5 to rotate to generate electricity and charge the lead-acid battery pack through the rectifying device, and the purpose of storing electric energy of the aluminum-air battery pack into the lead-acid battery pack is achieved.

The external power supply of the embodiment is a primary aluminum air battery pack, and the primary aluminum air battery pack is used as a clean power supply with energy density 20 times higher than that of a lead-acid battery, is low in price and has irreplaceable advantages in portable occasions; in addition, the charging system does not use a DC-DC circuit, high-frequency electromagnetic radiation generated by a high-frequency switching circuit can be avoided, and the purpose of controlling the output power of the rectifying device can be achieved by controlling the rotating speed of the motor 2.

Examples 2,

The magnetic pole directions of the electric wheel 1 of the embodiment 1 are all replaced, namely, the S pole of the moving magnet 1c arranged around the rim 1b of the electric wheel 1 faces the rotating shaft 1a, and the N pole faces the outer edge; the motor 2 is changed into a rotary alternating current motor driven by nominal 220V, and the power supply control end of the rotary alternating current motor is connected with a 220V alternating current power supply of the city network.

In this embodiment, the magnetic pole direction arrangement of the moving magnet 1c of the electric wheel 1 and the rotating magnet 3c of the magnetic moment wheel 3 is similar, i.e., the S pole faces the rotating shaft 3a and the n pole faces the outer edge, so that the magnetic field distribution state between the electric wheel 1 and the rotating magnet 3c is changed and the acting forces are repulsive; when the energy storage device supplies power to the motor 2 to drive the electric wheel 1 to rotate, the rotation of the movable magnet 1c around the shaft 1a generates a magnetic repulsion force along the magnetic action line 13 to the rotary magnet 3c, the magnetic repulsion force is decomposed into component forces along the normal 10 direction and the tangential 32 direction, and the dynamic direction of the magnetic action decomposition is schematically shown in fig. 8 (the schematic structure in fig. 8 only marks the characteristic relationship between 1 movable magnet 1c and 1 rotary magnet 3 c). The magnetic repulsion force along the tangential line 32 will drive the magnetic moment wheel 3 to rotate around the rotating shaft 3a, so that the magnetic moment wheel 3 obtains a torque increment and drives the generator 5 to rotate through the rotating shaft 3a to generate power, and the purpose of storing the electric energy of the commercial network alternating current power supply into the lead-acid battery pack is achieved through the rectifying device.

Examples 3,

The charging system of the embodiment 1 is technically deformed, two magnetic moment wheels 3 are arranged, the distribution of the rotating magnets 3c on the rims 3b of the two magnetic moment wheels is the same, and the rotating shafts 3a of the two magnetic moment wheels are respectively and fixedly arranged on the same rotating shaft, so that the two magnetic moment wheels can be seen as one magnetic moment wheel 3 by axial longitudinal reference; meanwhile, two electric wheels 1 are respectively arranged corresponding to the two magnetic moment wheels 3, moving magnets 1c on rims 1b of the two electric wheels are distributed in the same mode, and rotating shafts 1a of the two electric wheels are respectively and fixedly installed on the same rotating shaft, so that the two electric wheels can be regarded as one electric wheel 1 by longitudinal shaft reference. When mounted, the planar centre lines 11 of the two motorized wheels 1 coincide with the planar centre lines 33 of the two magnetic moment wheels 3, as shown in figure 7.

In this embodiment, the two magnetic moment wheels 3 coaxially arranged can be regarded as one magnetic moment wheel 3 working synchronously; similarly, the two coaxially arranged electric wheels 1 can be regarded as one electric wheel 1 working synchronously. This embodiment sets up two magnetic moment wheels 3 and two electronic wheel 1's technological meaning, lie in that 8 on the wheel rim 1b of applying two electronic wheels 1 move the magnet 1c and take place periodic magnetic attraction to 16 commentaries on classics magnet 3c on the wheel rim 3b of two magnetic moment wheels 3, rotation inertia through two magnetic moment wheels 3 obtains bigger torque in pivot 3a, makes generator 5 export bigger electric energy, can provide bigger energy storage charging power for the lead-acid battery group through fairing.

Examples 4,

In the energy storage system of embodiment 3, the rotating shaft 3a of the magnetic moment wheel 3 of the charging system is coaxially arranged with the rotating shaft of the generator, in this embodiment, the rotating shaft 3a of the magnetic moment wheel 3 is sleeved on a speed change mechanical device, the speed change mechanical device is fixedly sleeved on the rotating shaft of the generator, 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 of the generator coincide with each other. In addition, the motor 2 is changed into an outer rotor structure, the electric wheel 1 is cancelled, the moving magnets 1c which are originally arranged on the electric wheel 1 around the rim 1b are changed to be arranged on the outer edge of the rotor of the motor 2 at equal intervals, and the two-in-one function of the electric wheel 1 and the motor 2 is realized.

The technical improvement significance of the embodiment lies in that the rotation speed of the generator is changed by using the speed change mechanical device, so that the rotation speed of the generator is not limited to be the same as that of the magnetic moment wheel 3, and the technical aim of obtaining alternating current with different frequencies at the output end of the generator is fulfilled; in addition, the design of integrating the functions of the electric wheel 1 and the electric motor 2 enables the internal structure of the energy storage system to be simpler. In a further technical modification of this embodiment, the speed change mechanism disposed coaxially with the generator may be changed to a gear transmission manner disposed coaxially with the generator.

Examples 5,

The external power source adopted in embodiment 1 is a primary aluminum-air battery pack, and the aluminum-air battery has the advantages that the aluminum-air battery is not only used in a portable situation but also irreplaceable, and particularly when the electrode of the aluminum-air battery is completely dissolved or the electrolyte of the aluminum-air battery is completely saturated, the aluminum-air battery can continue to operate in a mode of replacing the electrode/electrolyte (conventionally called mechanical charging in the industry), and the replacement of the electrode/electrolyte is regarded as an electric energy supplementing method.

Examples 6,

On the basis of the embodiment 1, a group of solar batteries with the same nominal 48V output voltage and a control device thereof are added in the charging system, and the working logic of the solar batteries and the control device is set as OR with that of the primary aluminum-air battery. The effect of adding solar cell array and its controlling means in this embodiment is under the setting of or work logic, and the electric energy of controlling the motor 2 priority use solar cell array among the charging system, starts the electric energy of aluminium air battery group when solar cell array power is not enough, makes motor 2 obtain double-circuit power work guarantee, double-circuit power guarantee energy storage.

Example 7,

The embodiment 6 is further technically modified, and a discharge device is additionally arranged, wherein the discharge device is a power supply logic control device, and is internally provided with a CPU, a memory and a working peripheral circuit thereof, and a logic program for controlling the operation of the discharge device; the power input end of the discharging device is connected with the power end of the lead-acid battery pack serving as the energy storage device and the power output end of the motor 2, the power output end of the discharging device is connected with a power logic interface, and the power logic interface can be independently arranged and can also be integrally designed with the control device in the embodiment 6; the working signal control end of the discharging device is connected with the working signal input end of the power supply logic interface; the power supply logic interface is respectively electrically connected with three direct current power supplies, the combination logic of the three direct current power supplies is controlled by the working logic of the discharging device, and the logic control relationship between the three direct current power supplies and the electric motor is OR. The present embodiment may provide dc/ac power to the external load of the energy storage system via the power output of the rectifier/generator 5 of the charging system.

The working control logic of the discharging device to the power supply logic interface is as follows: the motor 2 in the charging system preferentially uses the electric energy of the solar battery pack, when the electric energy of the solar battery pack and the electric energy of the aluminum air battery pack are insufficient in sequence, the lead-acid battery pack is electrically connected with the motor 2, and the three power supplies guarantee the charging of the energy storage system.

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

1. An energy storage system, comprising an energy storage device and a charging system; the energy storage device comprises a secondary battery or/and an electric driven mechanical energy storage device; the charging system comprises an electric wheel (1), a motor (2), a magnetic moment wheel (3), a generator (5) and a rectifying device; the motor (2) is rotary, and the power supply control end of the motor is connected with an external power supply device; the rotating shaft of the motor (2) is coaxially and fixedly connected with the rotating shaft (1 a) of the electric wheel (1) or is driven by a speed-changing/torque-changing device; at least 4 moving magnets (1 c) are evenly distributed on the electric wheel (1) around the rim (1 b) at intervals, and the arc distance between the outer edges of the moving magnets (1 c) is m; the magnetic moment wheel (3) is uniformly distributed with at least 4 rotating magnets (3 c) at intervals around the rim (3 b), and the arc distance between the outer edges of the rotating magnets (3 c) is n; the arc spacing m is equal to the arc spacing n; the moving magnet (1 c) and the rotating magnet (3 c) are made of permanent magnet materials; the electric wheel (1) and the magnetic moment wheel (3) are arranged adjacently; the rotating shaft (3 a) of the magnetic moment wheel (3) is coaxially and fixedly connected with the rotating shaft (5 a) of the generator (5) or is driven by a speed change gear; the generator (5) is rotary, and the power output end of the generator is connected with the power input end of the rectifying device; the power output end of the rectifying device is connected with the power input end of the energy storage device;

when the motor (2) drives the electric wheel (1) to rotate, the distribution state of a magnetic field of a gap (4) between the outer edge of the moving magnet (1 c) and the outer edge of the rotating magnet (3 c) is changed in a reciprocating mode, so that the magnetic moment wheel (3) obtains torque to drive the generator (5) to rotate and generate electricity, and the energy storage device is charged through the rectifying device to achieve electric energy storage.

2. Energy storage system according to claim 1, characterized in that said electric wheels (1) and magnetic wheels (3) are arranged in said energy storage system in at least 1 number.

3. Energy storage system according to claim 1, characterized in that the moving magnets (1 c) and the rotating magnets (3 c) are arranged with their respective axes of rotation in the same polar direction or in an alternating manner of magnetic poles N-S.

4. Energy storage system according to claim 1, characterized in that the motorized wheel (1) is arranged adjacent to the magnetic moment wheel (3) with a gap (4) of the outer edge of the moving magnet (1 c) to the outer edge of the rotating magnet (3 c) of not more than 60mm.

5. Energy storage system according to claim 1, characterized in that said electric wheels (1) or/and magnetic wheels (3) are made of more than 2 layers of different materials in a ring shape.

6. Energy storage system according to claim 1, characterized in that the electric wheels (1) and the electric motor (2) are designed in one piece.

7. The energy storage system of claim 1, wherein said energy storage device further comprises: a discharge device; the power input end of the discharging device is connected with the power end of the energy storage device, and the power output end of the discharging device provides power for the discharging load.

8. The energy storage system of claim 1, wherein said external power supply means comprises primary battery means or utility power supply means, and power supply means for converting wind, solar, or thermo-mechanical energy into electrical energy.

9. An electric energy supplementing method based on an external power supply according to claim 8, characterized in that the electrodes and the electrolyte are replaced for said primary battery.