A time-varying load device for simulating the charge and discharge experiment of an energy storage capacitor

Abstract

The present invention provides a time-varying load device for simulating the charge and discharge experiment of a storage capacitor, belonging to the technical field of experimental devices. It includes: a first conductive track and a second conductive track respectively arranged on a first insulating base and a second insulating base, an armature with one end electrically connected to the first conductive track and the other end electrically connected to the second conductive track, and a transmission mechanism for driving the armature to reciprocate along the first conductive track and the second conductive track; the cross-sectional areas of the first conductive track and the second conductive track gradually decrease from the inlet to the outlet; a first discharge lead and a second discharge lead are arranged at the inlets of the first conductive track and the second conductive track, and an inlet limit switch and an outlet limit switch are arranged at the inlet and the outlet of the first conductive track. The present invention controls the reciprocating movement of the armature on the conductive track through the transmission mechanism, and realizes the equivalence of the charge and discharge processes of a storage capacitor under actual working conditions in terms of electrical characteristics, providing a feasible solution for simulating the repeated charge and discharge processes of a storage capacitor.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental devices, and in particular to a time-varying load device for simulating the charge and discharge experiments of energy storage capacitors, and particularly to a time-varying load device for simulating the actual working conditions of an electromagnetic catapult system in the charge and discharge experiments of energy storage capacitors. Background Art

[0002] An electromagnetic catapult system consists of an energy storage capacitor, a conductive track, an armature, and a load, etc. In actual working conditions, the energy storage capacitor is in a repeated charge and discharge operation state. However, the repeated charge and discharge processes will cause a decrease in the capacitance of the energy storage capacitor and a shortening of its service life. Therefore, the charge and discharge characteristics of the energy storage capacitor are the key to studying the operation stability and life characteristics of the energy storage capacitor.

[0003] The conductive track is the main load when the energy storage capacitor discharges, and is usually equivalent to a series of a time-varying resistance and a time-varying inductance related to the position of the armature. When the energy storage capacitor discharges, the armature gradually moves towards the outlet direction, and the equivalent resistance and equivalent inductance of the conductive track also gradually increase. If the Joule heat of the conductive track after energization and the frictional heat generated between the armature and the conductive track are not considered, the equivalent resistance and equivalent inductance of the conductive track almost linearly increase with the increase of the armature displacement. However, in actual working conditions, the Joule heat of the conductive track and the frictional heat caused by the movement of the armature are inevitable, which will inevitably cause an increase in the temperature of the conductive track. Due to the non-linear relationship between the resistivity of the conductive track and the temperature, the increase in temperature will inevitably lead to a non-linear increase in the equivalent resistance of the conductive track.

[0004] Currently, when studying the charge and discharge characteristics of the energy storage capacitor of the electromagnetic catapult system in the laboratory, the discharge load of the energy storage capacitor is usually a constant load, which is composed of a single resistor or a series of a resistor and an inductor, and its resistance value and inductance value are constants independent of time. However, it cannot reflect the time-varying characteristics and non-linear characteristics of the time-varying load in the actual working conditions of the electromagnetic catapult system. The charge and discharge characteristics of the energy storage capacitor obtained through the constant load can only reflect the operation stability and life characteristics of the energy storage capacitor under the constant load, and it is difficult to effectively evaluate the performance of the energy storage capacitor in the actual working conditions of the electromagnetic catapult system, which is not equivalent to the time-varying load in the actual working conditions. Summary of the Invention

[0005] In view of this, in order to solve the technical problem that the constant load in the prior art is not equivalent to the time-varying load in the actual working conditions and cannot reflect the time-varying characteristics and non-linear characteristics of the time-varying load in the actual working conditions of the electromagnetic catapult system, the present invention provides a time-varying load device for simulating the charge and discharge experiments of energy storage capacitors, which controls the reciprocating movement of the armature on the parallel conductive track through a transmission mechanism, and realizes the equivalence of the charge and discharge processes of the energy storage capacitor in the actual working conditions in terms of electrical characteristics, providing a feasible solution for simulating the repeated charge and discharge processes of the energy storage capacitor in the actual working conditions.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A time-varying load device for simulating the charge and discharge experiment of an energy storage capacitor, comprising:

[0008] A first insulating base, on which a first conductive track is provided;

[0009] A second insulating base, on which a second conductive track is provided;

[0010] An armature, one end of which is electrically connected to the first conductive track, and the other end of which is electrically connected to the second conductive track;

[0011] A transmission mechanism, which is used to drive the armature to reciprocate along the first conductive track and the second conductive track;

[0012] A controller, which is used to adjust the transmission speed of the transmission mechanism;

[0013] The cross-sectional areas of the first conductive track and the second conductive track gradually decrease from the inlet to the outlet;

[0014] At the inlet of the first conductive track, a first discharge lead and an inlet limit switch are provided. At the inlet of the second conductive track, a second discharge lead is provided. At the outlet of the first conductive track, an outlet limit switch is provided. The inlet limit switch is connected to the inlet limit switch terminal on the controller through an inlet limit switch lead, and the outlet limit switch is connected to the outlet limit switch terminal on the controller through an outlet limit switch lead.

[0015] Preferably, the transmission mechanism includes:

[0016] A belt, which is used to drive the armature to reciprocate;

[0017] A pulley, which is used to drive the belt to move;

[0018] A rotating shaft, which is used to drive the pulley to rotate;

[0019] A motor, which is used to drive the rotating shaft to rotate;

[0020] The motor is electrically connected to the controller through a motor control line.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The time-varying load device for simulating the charge and discharge experiments of energy storage capacitors provided by the present invention comprehensively considers the time-varying characteristics and non-linear characteristics of the discharge load of energy storage capacitors under actual working conditions, as well as the consistency of the charge and discharge times of energy storage capacitors. By controlling the reciprocating movement of the armature on the parallel conductive tracks through a transmission mechanism, the equivalence of the charge and discharge processes of energy storage capacitors under actual working conditions is achieved in terms of electrical characteristics, providing a feasible solution for simulating the repeated charge and discharge processes of energy storage capacitors under actual working conditions.

[0023] (2) The time-varying load device for simulating the charge and discharge experiments of energy storage capacitors provided by the present invention has a simple structure and is easy to implement. It has similar time-varying characteristics and non-linear characteristics to the discharge load of energy storage capacitors under actual working conditions, realizing the equivalent transformation of the discharge load of energy storage capacitors under actual working conditions, and solving the technical problem of the non-equivalence of the constant load used in the charge and discharge characteristic experiments of energy storage capacitors in existing electromagnetic catapult systems.

[0024] (3) The time-varying load device for simulating the charge and discharge experiments of energy storage capacitors provided by the present invention, through the control of the transmission speed by the transmission mechanism, the movement time of the armature outside and between the parallel conductive tracks is respectively consistent with the charge and discharge times of the energy storage capacitor under actual working conditions, and the equivalence of the charge and discharge processes of the energy storage capacitor under actual working conditions is achieved in terms of electrical characteristics. Description of the Drawings

[0025] Figure 1 is the top view of the present invention;

[0026] Figure 2 is Figure 1 the sectional view taken along line A-A in

[0027] In the figure, 1. armature; 2. first conductive track; 3. second conductive track; 4. second insulating base; 5. pulley; 6. belt; 7. motor; 8. rotating shaft; 9. inlet limit switch; 10. outlet limit switch; 11. controller; 12. inlet limit switch lead; 13. outlet limit switch lead; 121. inlet limit switch terminal; 131. outlet limit switch terminal; 14. motor control line; 15. armature movement direction; 16. first discharge lead; 17. second discharge lead; 18. first insulating base. Detailed Embodiment

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] As Figure 1-2 shown, the present invention provides a time-varying load device for simulating the charge and discharge experiment of a storage capacitor, including:

[0032] A first insulating base 18, on which a first conductive track 2 is provided;

[0033] A second insulating base 4, on which a second conductive track 3 is provided;

[0034] An armature 1, one end of which is electrically connected to the first conductive track 2 and the other end of which is electrically connected to the second conductive track 3;

[0035] A transmission mechanism for driving the armature 1 to reciprocate along the first conductive track 2 and the second conductive track 3;

[0036] A controller 11 for adjusting the transmission speed of the transmission mechanism;

[0037] The cross-sectional areas of the first conductive track 2 and the second conductive track 3 gradually decrease from the inlet to the outlet;

[0038] At the inlet of the first conductive track 2, a first discharge lead 16 and an inlet limit switch 9 are provided. At the inlet of the second conductive track 3, a second discharge lead 17 is provided. At the outlet of the first conductive track 2, an outlet limit switch 10 is provided. The inlet limit switch 9 is connected to the inlet limit switch connection terminal 121 on the controller 11 through an inlet limit switch lead 12, and the outlet limit switch 10 is connected to the outlet limit switch connection terminal 131 on the controller 11 through an outlet limit switch lead 13.

[0039] In the present invention, the transmission mechanism includes:

[0040] A belt 6, which is used to drive the armature 1 to reciprocate;

[0041] A pulley 5, which is used to drive the belt 6 to move;

[0042] A rotating shaft 8, which is used to drive the pulley 5 to rotate;

[0043] A motor 7, which is used to drive the rotating shaft 8 to rotate;

[0044] The motor 7 is electrically connected to the controller 11 through a motor control line 14.

[0045] In the present invention, good electrical contact between the armature 1 and the first conductive rail 2 and the second conductive rail 3 is ensured; the cross-sectional areas of the first conductive rail 2 and the second conductive rail 3 gradually decrease from the inlet to the outlet. According to the inverse proportional relationship between the conductor resistance and its cross-sectional area, the decrease in the cross-sectional area causes the equivalent resistance of the conductive rail to increase non-linearly, simulating the non-linear change of the time-varying load in the actual working condition.

[0046] In the present invention, the armature 1 is fixed on the belt 6. Under the driving action of the belt 6, the armature 1 moves from the inlet of the conductive rail to the outlet direction (as shown by the arrow direction 15 in the figure representing the movement direction of the armature). The moving armature and the conductive rail form the discharge load of the energy storage capacitor, the magnitude of which is proportional to the armature displacement and has a time-varying characteristic similar to the discharge load of the energy storage capacitor in the actual working condition; by controlling the transmission speed of the belt 6, the movement time of the armature 1 between the conductive rails is made consistent with the discharge time of the energy storage capacitor in the actual working condition; the transmission of the belt 6 makes the armature 1 return from the outlet of the conductive rail to the inlet, and the movement time is consistent with the charging time of the energy storage capacitor in the actual working condition.

[0047] In the present invention, preferably, the first conductive rail 2 and the second conductive rail 3 are arranged in parallel and at intervals, and the belt 6 is arranged within the interval to drive the armature 1 to reciprocate along the first conductive rail 2 and the second conductive rail 3 arranged in parallel.

[0048] In the present invention, when the armature 1 moves to the inlet limit switch 9 of the conductive rail, the energy storage capacitor discharges to the conductive rail and the armature 1 through the first discharge lead 16 of the first conductive rail 2 and the second discharge lead 17 of the second conductive rail 3, simulating the discharge process of the energy storage capacitor; when the armature 1 moves to the outlet limit switch 10 of the conductive rail, the discharge of the energy storage capacitor ends and a new charging process begins.

[0049] In the present invention, the controller 11 controls the rotational speeds of the motor 7 and the pulley 5 and the transmission speed of the belt 6 through the motor control line 14 according to the input signals of the entrance limit switch 9 and the exit limit switch 10.

[0050] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes; all should be covered within the protection scope of the present invention.

Claims

1. A time-varying load device for a simulation energy storage capacitor charge and discharge experiment, characterized in that Comprising: A first insulating base on which a first conductive track is provided; A second insulating base on which a second conductive track is provided; An armature, one end of which is electrically connected to the first conductive track and the other end of which is electrically connected to the second conductive track; A transmission mechanism for driving the armature to reciprocate along the first conductive track and the second conductive track; A controller for adjusting the transmission speed of the transmission mechanism; The cross-sectional areas of the first conductive track and the second conductive track gradually decrease from the inlet to the outlet; A first discharge lead and an inlet limit switch are provided at the inlet of the first conductive track, a second discharge lead is provided at the inlet of the second conductive track, an outlet limit switch is provided at the outlet of the first conductive track, the inlet limit switch is connected to the inlet limit switch terminal on the controller through an inlet limit switch lead, and the outlet limit switch is connected to the outlet limit switch terminal on the controller through an outlet limit switch lead.

2. The time-varying load device for the simulation of the charge and discharge experiment of the energy storage capacitor according to claim 1, wherein, The transmission mechanism includes: A belt for driving the armature to reciprocate; A pulley for driving the belt to move; A rotating shaft for driving the pulley to rotate; A motor for driving the rotating shaft to rotate; The motor is electrically connected to the controller through a motor control line.

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