An electric propulsion device driven by internal current induction

Abstract

This invention provides an electric propulsion device driven by internal current induction, comprising two layers of conductive thin films wound together and spaced insulating thin films, a secondary metal cylinder, a guide cylinder, and an external circuit. The secondary metal cylinder is located inside the guide cylinder, and two layers of conductive thin films are wound around the outside of the guide cylinder, with an insulating thin film between them. The conductive and insulating films are continuously wrapped around the guide cylinder in multiple layers. The external circuit applies a high voltage to both ends of the two conductive thin films and then short-circuits the two conductive thin films at their ends, forming a strong axial pulsed magnetic field inside the guide cylinder, driving the secondary metal cylinder to accelerate forward. This invention integrates the traditional energy storage pulsed power capacitor, transmitter primary winding, and associated mechanical reinforcement structure into a single component, greatly simplifying the electromagnetic propulsion device. Simultaneously, it fully utilizes the internal current generated during the discharge process of the conductive thin film, which acts as an energy storage element, thus improving energy utilization efficiency.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic propulsion, and more specifically to an electric propulsion device driven by internal current induction. Background Technology

[0002] Traditional electromagnetic propulsion devices that use pulsed power capacitors as power sources, whether rail-mounted, coil-mounted, or a combination of both, structurally involve capacitors discharging to inductive loads. The capacitors and inductors are separate in the circuit. Theoretically, their energy utilization rate is no more than 50%. Furthermore, they require the manufacture of dedicated electromagnetic propulsion launchers (see Chinese patents: CN202010569204.2, CN201810830703.5, CN201810371043.9, CN201120199296.6, etc.) and dedicated armatures for carrying munitions or warheads (see Chinese patents: CN202010596960.4, CN201822245810.X, CN201810975647.4, CN201810830703.5, etc.). The launcher and energy storage element are separate, independent components. Pulsed power capacitors are typically used as power sources. Electrons move from the negative terminal of the capacitor through the load to the positive terminal. The current formed during the movement of electrons within the electrode film can be called the internal current. This internal current generates a large amount of ineffective energy loss within the capacitor, reducing overall operating efficiency. Current independent capacitor modules cannot utilize this energy, resulting in Joule heat loss and electrodynamic forces within the capacitor, limiting the charging and discharging frequency. The entire capacitor also requires a reinforced casing to overcome these electrodynamic forces. Furthermore, existing solutions involve separately fabricating the primary winding of the launcher. To overcome the strong electrodynamic forces generated by the pulsed current within the launcher, a thick composite material binding layer and a metal sleeve are required on the outside of the winding. Eddy current losses within the metal sleeve increase the load's inductive reactance, reducing system operating efficiency and resulting in a large overall system size and weight. The numerous components and their connections also increase the failure rate. Summary of the Invention

[0003] To address the design limitations of existing induction coil propulsion systems where the pulse power capacitor is a separate module, this invention provides an electric propulsion device driven by internal current induction.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows: an electric propulsion device driven by internal current induction, comprising two layers of conductive thin films wound together and an insulating film wound between the two conductive thin films, a metal cylinder secondary, a guide cylinder, and an external circuit; wherein, the metal cylinder secondary is located inside the guide cylinder made of insulating material; the two layers of conductive thin films and the insulating film wound between the two conductive thin films are continuously wrapped around the outside of the guide cylinder; the external circuit is used to apply a high voltage to the conductive thin films.

[0005] Furthermore, after the external circuit applies a high voltage to the conductive film to reach the rated voltage value, the external circuit short-circuits the two ends of the conductive film. During the movement of charges on the conductive film, a current is formed, which creates a strong pulsed magnetic field with axial variation inside the guide cylinder, propelling the secondary metal cylinder out at high speed.

[0006] Furthermore, when the secondary material of the metal cylinder is a ferromagnetic material, it accelerates in a magnetoresistive manner.

[0007] Furthermore, the secondary metal cylinder can be cylindrical, cup-shaped, disc-shaped, or solid cylindrical.

[0008] Furthermore, the structure formed by the multiple conductive films, insulating films, and guide cylinders is coaxially connected in series, charged separately, and discharged when the secondary metal cylinder passes through each series segment to achieve continuous acceleration, ultimately enabling the secondary metal cylinder to reach a higher exit speed.

[0009] Furthermore, the insulating material of the guide cylinder is epoxy fiberglass, tempered glass, ceramic, or engineering plastic.

[0010] Furthermore, the conductive film and the insulating film are multi-layered.

[0011] Furthermore, the outer diameter of the multi-layered conductive and insulating films is consistent with the inner diameter of the barrel of a conventional artillery piece.

[0012] Furthermore, the conductive film is made of aluminum alloy, copper, or stainless steel.

[0013] Furthermore, the insulating film is made of polyethylene, polyvinyl chloride, or polytetrafluoroethylene.

[0014] The advantages of this invention compared to the prior art are:

[0015] (1) This invention integrates the pulse power energy storage device, the primary winding of the transmitter and its mechanical reinforcement structure into one component, which has basic functions such as energy storage, propulsion and structural reinforcement, reducing the complexity, volume and weight of the system. Its integrated design of pulse power capacitor, primary winding and transmitter not only simplifies the structure of existing inductive coil propulsion, but also makes full use of the energy released by the internal current during the discharge of the energy storage capacitor, improving the system operating efficiency. Theoretically, it can break through the 50% upper limit of traditional inductive coil propulsion.

[0016] (2) As the charge forms an internal current during the movement of the electrode film wound around the capacitor, the spiral distribution effect of the internal current is equivalent to the current distribution in the primary winding of the coil. The conductive film of the capacitor is equivalent to the primary winding driven by electromagnetic induction. The magnetic field generated by the internal current interacts with the secondary metal cylinder located in the central cylindrical cavity due to electromagnetic induction, which propels it forward. This invention cleverly utilizes the internal current of the energy storage element to improve the energy utilization rate of the entire system.

[0017] (3) The device of the present invention has a simple structure. The shape of the multi-layer conductive film and insulating film can be customized according to requirements. The multi-layer conductive film and the internal insulating film work together to strengthen the structure. The primary structure of the propulsion device is simplified and it is compatible with a variety of existing conventional gunpowder projectile launching devices. After one launch, the energy storage capacitor, that is, the primary winding, can be recharged and filled with a new metal cylinder secondary to achieve rapid and repeated launches. Attached Figure Description

[0018] Figure 1 A schematic diagram illustrating the relationship between the direction of charge movement and the direction of the magnetic field on the conductive thin film of this invention.

[0019] Figure 2 A schematic diagram of the axial projection of the spatial relationship between the multilayer wound conductive film, insulating film and guide cylinder and metal cylinder secondary of the present invention.

[0020] Figure 3 A frontal view of the spatial relationship between the multilayer wound conductive film, insulating film and guide cylinder and metal cylinder secondary of the present invention.

[0021] Figure 4 A rear-view perspective view showing the spatial relationship between the multilayer wound conductive film, insulating film, guide cylinder, and metal cylinder secondary components of the present invention.

[0022] In the diagram: 1. Conductive film; 2. Insulating film; 3. Metal cylinder secondary; 4. Guide cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0024] The principle of this invention is as follows Figure 1As shown, after a voltage is applied, two adjacent conductive films 1 become positively charged and negatively charged, forming two electrodes. When the two electrodes are short-circuited at both ends, the positive and negative charges move and neutralize each other. The directions of movement of the positive and negative charges are opposite, which macroscopically manifests as the current direction being the same. According to the law of electromagnetic induction, a magnetic field with the same direction is formed in the internal space of the coil.

[0025] The electric propulsion device of the present invention, driven by internal current induction, includes two layers of conductive thin films 1 wound together, an insulating thin film 2 wound between the conductive thin films 1 on both sides, a metal cylinder secondary 3, a guide cylinder 4, and external circuitry, etc. Among them, for example... Figure 2-4 As shown, the secondary metal cylinder 3 is located inside the guide cylinder 4 made of insulating material. Outside the guide cylinder 4, two layers of conductive film 1 and an insulating film 2 spaced apart from the conductive films 1 on both sides are continuously wrapped around the guide cylinder 4. The external circuit applies a high voltage to the conductive film 1. After reaching the rated voltage value, the external circuit short-circuits the two ends of the conductive film 1. During the movement of charges on the conductive film 1, a current is formed, creating a strong axial pulsed magnetic field inside the guide cylinder. Utilizing the law of electromagnetic induction, the secondary metal cylinder 3 is propelled out at high speed. When the secondary metal cylinder 3 is made of ferromagnetic material, it can be accelerated by reluctance. Multiple electric propulsion devices can be connected coaxially in series, allowing the secondary metal cylinder 3 to be continuously accelerated, achieving higher terminal velocities.

[0026] The external circuit (not shown) applies a high voltage (charging) to the two ends of the two conductive films 1. The two conductive films 1 become two electrodes, with the positive electrode carrying a positive charge and the negative electrode carrying a negative charge. Upon reaching the rated voltage, a strong electric field is formed inside the insulating film 2. This strong electric field stores energy, the magnitude of which is related to the potential difference between the two conductive films 1, the thickness of the insulating film 2, and the dielectric constant of the material. After reaching the rated voltage, the external circuit (not shown) short-circuits (discharges) the two ends of the conductive films 1. Note that the short-circuited ends of the conductive films 1 should be as follows... Figure 1 The direction of charge movement is shown. Charges on the conductive film 1 move and neutralize each other. Because the positive charges on the positive electrode and the negative charges on the negative electrode move in opposite directions, macroscopically, this manifests as a strong current flowing in the same direction. This creates a strong pulsed magnetic field that changes axially inside the guide cylinder 4. According to the law of electromagnetic induction, a current flowing in the opposite direction to that in the conductive film 1 is induced inside the secondary metal cylinder 3. After the short circuit, the current in the conductive film 1 undergoes a rising change process before reaching its peak current. The induced current in the secondary metal cylinder 3 is in the opposite direction to the current in the conductive film 1. The magnetic fields formed by these two currents repel each other, causing the secondary metal cylinder 3 to accelerate axially. After the secondary metal cylinder 3 exits the guide cylinder 4, a new secondary metal cylinder 3 can be inserted, and the above charging and discharging process can be repeated to achieve multiple consecutive launches.

[0027] It can be seen that the electromagnetic propulsion device proposed in this invention integrates the traditional energy storage capacitor, primary winding and fastening device into one part. At the same time, during the charge movement on the conductive film 1, the internal current forms a magnetic field that generates thrust on the secondary metal cylinder 3, instead of being output to the actuating component through the line. This reduces the line loss of the connecting wires and other components and improves the system operating efficiency.

[0028] The electric propulsion device of this invention reduces volume and weight while improving overall operating efficiency. The secondary metal cylinder 3, which is also the mover or load-bearing part of the electric propulsion device, is generally a cylinder made of aluminum alloy or copper. If reluctance operation is used, the secondary metal cylinder 3 can also be made of ferromagnetic material, such as steel or cast iron. The secondary metal cylinder 3 can also be a cup-shaped, disc-shaped, or solid cylindrical rotating structure. The guide cylinder 4 constrains the forward direction of the secondary metal cylinder 3 and also serves as insulation. The guide cylinder 4 is made of insulating structural materials, such as epoxy fiberglass, tempered glass, ceramics, or engineering plastics. Two layers of conductive film 1 are wound around the guide cylinder 4, with an insulating film 2 between them. The conductive film 1 can be a metal material such as aluminum alloy, copper, or stainless steel, and the insulating film 2 can be various engineering plastics, such as polyethylene, polyvinyl chloride, or polytetrafluoroethylene. The conductive film 1 and the insulating film 2 can be manufactured using composite processes, such as aluminum-plated film, or an electrolyte or compound electrolytic layer, forming an electrode structure similar to an electrolyte capacitor or supercapacitor. The conductive film 1 and the insulating film 2 can be wound in multiple layers. The multiple layers of conductive film 1 and the interphase insulating film 2 are wound together, and their circumferential and axial structural strengths reinforce each other to form a self-reinforcing structure. This structure overcomes the electrodynamic force generated by the internal current and the reaction force that propels the secondary metal cylinder 3 forward, thus ensuring the mechanical stability of the winding.

[0029] As can be seen, the topology of this invention integrates the traditional multi-layer wound thin-film structure of the pulse power capacitor for energy storage, the multi-turn primary winding structure of the transmitter, the associated mechanically reinforced multi-layer composite insulating material structure, and the outer metal fastening layer into a single component, greatly simplifying the design. Simultaneously, when the charge on the conductive film 1 neutralizes the energy consumed during the movement (excitation magnetic field), i.e., the internal current, a current is directly induced in the secondary winding 3 of the metal cylinder, connecting to the primary winding without external wires, thus improving energy utilization efficiency. The structure formed by multiple conductive films 1, insulating films 2, and guide cylinders 4 can be connected in series coaxially, charged separately, and discharged as the secondary winding 3 of the metal cylinder passes through this section, allowing for continuous acceleration. Finally, the secondary winding 3 of the metal cylinder can reach a very high exit velocity. The secondary winding 3 of the metal cylinder can carry various types of warheads.

[0030] If the outer diameter of the multi-layered wound conductive film 1 and insulating film 2 is made to match the inner diameter of the barrel of a conventional artillery piece, this device can be directly launched using a conventional artillery piece. This means that existing artillery can be directly electromagneticated without any modification, breaking through the muzzle velocity limitations of conventional artillery, achieving higher muzzle kinetic energy and delivery distance. Furthermore, its storage, transportation, and maintenance are safer, more convenient, and more reliable than traditional propellant projectiles. The outer diameter and length of the multi-layered wound conductive film 1 can be adapted to the inner diameter of existing conventional artillery pieces, making the propulsion device proposed in this invention compatible with existing conventional artillery and enabling it to become a new type of projectile with a muzzle velocity exceeding that of existing gunpowder-propelled ammunition.

[0031] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electric propulsion device driven by internal current induction, characterized in that: The device includes two layers of conductive films wound together and an insulating film wound between the two conductive films, a metal cylinder secondary, a guide cylinder, and an external circuit; wherein, the metal cylinder secondary is located inside the guide cylinder made of insulating material; the two conductive films are wound continuously around the outside of the guide cylinder; the external circuit is used to apply a high voltage to the conductive films; After the external circuit applies a high voltage to the conductive film to reach the rated voltage value, the external circuit short-circuits the two ends of the two conductive films. During the movement of charges on the conductive film, a current is formed, which forms an axial strong pulsed magnetic field inside the guide cylinder, propelling the secondary metal cylinder out at high speed. The structure formed by the multiple conductive films, insulating films and guide cylinders is connected in series on the same axis. They are charged separately and discharged when the secondary metal cylinder passes through each series segment to continuously accelerate, so as to make the secondary metal cylinder reach a higher exit speed.

2. The electric propulsion device according to claim 1, characterized in that: When the secondary material of the metal cylinder is a ferromagnetic material, it is accelerated in a magnetoresistive manner.

3. The electric propulsion device according to claim 1, characterized in that: The secondary metal cylinder can be cylindrical, cup-shaped, disc-shaped, or solid cylindrical.

4. The electric propulsion device according to claim 1, characterized in that: The insulating material of the guide cylinder is epoxy fiberglass, tempered glass, ceramic, or engineering plastic.

5. The electric propulsion device according to claim 1, characterized in that: The conductive film and the insulating film are multi-layered and wound.

6. The electric propulsion device according to claim 5, characterized in that: The outer diameter of the multi-layered conductive and insulating films is the same as the inner diameter of the barrel of a conventional artillery piece.

7. The electric propulsion device according to claim 1, characterized in that: The conductive film is made of aluminum alloy, copper, or stainless steel.

8. The electric propulsion device according to claim 1, characterized in that: The insulating film is made of polyethylene, polyvinyl chloride, or polytetrafluoroethylene.

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