Semicircular array type adjustable capacitor

Abstract

The utility model discloses a semicircular array type adjustable capacitor which comprises a support, a semicircular PCB is arranged in the support, a plurality of spring ejector pin contacts are arranged in the center of the support, a plurality of semicircular series-parallel array capacitor banks are arranged on the front face and the back face of the support in a staggered mode, a circular PCB is arranged above the support, and the circular PCB is connected with a closed-loop steering engine. A plurality of spring thimbles are distributed on the reverse side of the capacitor, the front side of the capacitor is connected with a central rotating electrode, the central rotating electrode is connected with a non-standard copper connecting piece through a copper bearing, a capacitor positive electrode is arranged at the top of the non-standard copper connecting piece, a radial PCB is arranged above the non-standard copper connecting piece, and a circumferential negative electrode is arranged at the radiation end of the radial PCB. And a capacitor cathode is arranged at the circle center of the radial PCB and is connected with the circumference of the semicircular PCB. According to the utility model, the capacitance value of the capacitor can be changed so as to regulate and control the pulse width of the output current pulse.

Description

TECHNICAL FIELD

[0001] The utility model relates to pulse power technical field especially relates to a semicircle array formula adjustable capacitor. BACKGROUND

[0002] Pulse power technology is an electric physical technology that slowly stores energy with high density, quickly compresses, converts or directly releases to the load. It is widely used in national defense research, high-tech research and civil industry and many other fields.

[0003] The basic principle of power single pulse generation is that a high-voltage power supply slowly charges a capacitor until the target voltage is reached across the capacitor, and then the energy stored in the capacitor is released instantaneously to output a power single pulse. However, the existing power single pulse generator can only output single-shaped single pulse waveforms. SUMMARY

[0004] To solve the problem that the existing power single pulse generator can only output single-shaped single pulse waveforms, the utility model provides a semicircle array formula adjustable capacitor, which can easily change the capacitance of the capacitor through a rotating mechanism, and thus the pulse width of the output current pulse can be regulated, thereby solving the above problem.

[0005] The application discloses a semicircle array formula adjustable capacitor, which comprises a support, a semicircular PCB circuit board arranged in the support, a plurality of spring needle contacts arranged in the center of the semicircular PCB circuit board, a plurality of groups of semicircular series-parallel array capacitor groups arranged on the front and back surfaces of the semicircular PCB circuit board in a staggered manner.

[0006] A circular PCB circuit board is arranged above the semicircular PCB circuit board, and the circular PCB circuit board is connected with a closed-loop servo motor.

[0007] A plurality of spring needles are uniformly distributed on the circumference of the back surface of the circular PCB circuit board with a semicircle as a boundary, and a center rotating electrode is connected to the front surface; the center rotating electrode is connected with a non-standard copper connecting piece through a copper bearing, and a positive electrode of a capacitor is arranged at the top of the non-standard copper connecting piece.

[0008] A radiation-shaped PCB circuit board is arranged above the non-standard copper connecting piece, a circumferential negative electrode is arranged at the radiation end of the radiation-shaped PCB circuit board, a negative electrode of a capacitor is arranged at the center of the radiation-shaped PCB circuit board, and the circumferential negative electrode is connected with the circumference of the semicircular PCB circuit board.

[0009] Preferably, the spring needle contact and the number of the half-round series-parallel array capacitor groups are 21, wherein 10 groups of the half-round series-parallel array capacitor groups are arranged on the front surface of the half-round PCB circuit board, 11 groups of the half-round series-parallel array capacitor groups are arranged on the back surface of the half-round PCB circuit board, and the pin positions of the capacitor groups on the front and back surfaces are staggered.

[0010] Preferably, the 21 groups of the half-round series-parallel array capacitor groups are connected in parallel, each group includes 3 capacitors connected in series in the longitudinal direction, and each group of the series-connected capacitors is arranged in a coaxial radial interval through the center of the half-round PCB circuit board.

[0011] Preferably, the capacitors are thin-film capacitors.

[0012] Preferably, the equivalent positive electrodes of the half-round series-parallel array capacitor groups are located at the plurality of spring needle contacts, the equivalent negative electrodes are located on the circumference of the half-round PCB circuit board, the circumferential negative electrodes are connected to the center of the radiating PCB circuit board as the negative electrodes of the capacitors.

[0013] Preferably, the number of the spring needles is 21, the spring needles, the central rotating electrode and the positive electrodes of the capacitors are all made of copper.

[0014] Preferably, the circular PCB circuit board is made of a mixed material of metal and 3D printing.

[0015] Preferably, the bracket is half-round and is made of PETG plastic by 3D printing.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) The utility model discloses a half-round PCB circuit board is arranged in a coaxial radial interval on the front and back surfaces to form a half-round adjustable capacitor, the spring needle and the contact can be paired by rotating the circular PCB circuit board through the closed loop servo motor when the half-round PCB circuit board is fixed, the number of the paired spring needle and the contact is different when the angle of the closed loop servo motor is different, and the capacitance of the capacitor is different.

[0018] (2) The utility model has great discharge current capacity and long service life on the basis of adjustable capacitance, and has important significance for the pulse power technology field. DRAWINGS

[0019] Figure 1 It is a front view of the half-round array adjustable capacitor of the utility model embodiment.

[0020] Figure 2 It is a top view of the half-round array adjustable capacitor of the utility model embodiment.

[0021] Figure 3 is a bottom view of the semi-circular array type adjustable capacitor of the embodiment of the present application;

[0022] Figure 4 is a left view of the semi-circular array type adjustable capacitor of the embodiment of the present application;

[0023] Figure 5 is a right view of the semi-circular array type adjustable capacitor of the embodiment of the present application;

[0024] Figure 6 is a front view of the semi-circular array type adjustable capacitor of the embodiment of the present application;

[0025] Figure 7 is a rear view of the semi-circular array type adjustable capacitor of the embodiment of the present application.

[0026] The reference signs are as follows:

[0027] 1-semi-circular PCB circuit board, 2-semi-circular series-parallel array capacitor group, 3-circular PCB circuit board, 4-spring needle, 5-radiation-shaped PCB circuit board, 6-closed loop servo, 7-central rotating electrode, 8-non-standard copper connecting piece, 9-circumferential negative electrode, 10-bracket, 11-capacitor positive electrode, 12-capacitor negative electrode. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and examples.

[0029] The embodiment of the present application discloses a semi-circular array type adjustable capacitor, the structure of which is shown in Figures 1-7 Fig. 1, which comprises a semi-circular PCB circuit board 1, a semi-circular series-parallel array capacitor group 2, a circular PCB circuit board 3, a spring needle 4, a radiation-shaped PCB circuit board 5, a closed loop servo 6, a central rotating electrode 7, a non-standard copper connecting piece 8, a circumferential negative electrode 9, a bracket 10, a capacitor positive electrode 11 and a capacitor negative electrode 12.

[0030] The semicircular PCB circuit board 1 is arranged inside the support 10, the center of which is provided with 21 spring needle contacts, and 21 groups of semicircular series-parallel array capacitor groups 2 are arranged on the front and back surfaces in a staggered manner, and the 21 groups of semicircular series-parallel array capacitor groups 2 are connected in parallel, each group including 3 longitudinally connected capacitors, a total of 63 capacitors, and each group of series-connected capacitors is arranged in a coaxial radial interval through the center of the semicircular PCB circuit board 1. Among them, 10 groups of semicircular series-parallel array capacitor groups 2 are arranged on the front surface of the semicircular PCB circuit board 1, and 11 groups of semicircular series-parallel array capacitor groups 2 are arranged on the back surface of the semicircular PCB circuit board 1, and the pin spaces of the capacitor groups on the front and back surfaces are staggered and do not interfere with each other, and the capacitors used in this embodiment are all thin film capacitors. The equivalent positive electrode of the semicircular series-parallel array capacitor group 2 is located at the plurality of spring needle contacts, and the equivalent negative electrode is located at the circumference of the semicircular PCB circuit board 1.

[0031] The circular PCB circuit board 3 is located above the semicircular PCB circuit board 1, and 21 spring needles 4 are uniformly distributed on the circumference of the back surface of the circular PCB circuit board 3, and the front surface is connected with a central rotating electrode 7, the central rotating electrode 7 is connected with a non-standard copper connector 8 through a copper bearing, and rotates through the copper bearing, and an electrode is arranged on the top of the rotating center of the non-standard copper connector 8, which is the positive electrode 11 of the capacitor in this embodiment.

[0032] The closed loop servo 6 is provided with a rotating shaft, and the circular PCB circuit board 3 is fixed on the rotating shaft by screws and is connected concentrically with the closed loop servo 6. The closed loop servo 6 is used to control the rotation angle of the circular PCB circuit board 3, the number of spring needles 4 in contact with the spring needle contacts is controlled by rotation, so as to adjust the semicircular series-parallel array capacitor groups 2 connected to the circuit, and the capacitance value is adjusted and the output pulse width is controlled.

[0033] The radial PCB circuit board 5 is arranged above the non-standard copper connector 8, and the circular circumferential negative electrode 9 is arranged on the strip-shaped radiation end of the radial PCB circuit board 5, and the radial PCB circuit board 5 connects the equivalent negative electrode on the circumference of the semicircular PCB circuit board 1 to the vicinity of the center through the circular circumferential negative electrode 9, which is the negative electrode 12 of the capacitor in this embodiment.

[0034] In this embodiment, the spring needle 4, the central rotating electrode 7 and the capacitor positive electrode 11 are all made of copper material, the semicircular PCB circuit board 1 and the radial PCB circuit board 5 are made of FR-4 substrate and copper mixed material, and the circular PCB circuit board 3 is made of FR-4 substrate, copper and PETG plastic 3D printing mixed material.

[0035] The support 10 is generally semicircular and is made of PETG plastic 3D printing, which supports the semicircular PCB circuit board 1, the circular PCB circuit board 3, the radial PCB circuit board 5 and the closed loop servo 6, and the positive electrode 11 and the negative electrode 12 of the capacitor are used for circuit connection.

[0036] The half-circle array type adjustable capacitor in the embodiment is used in cooperation with a power single pulse switch system, specifically, the power single pulse switch system comprises an MCU controller, a high-voltage power supply and a GDT switch module, the positive pole 11 of the capacitor and the negative pole 12 of the capacitor are sequentially connected to the output positive pole and the output negative pole of the power single pulse switch system, and the power single pulse switch system controls the angle of the closed loop servo motor 6 and charges and discharges the capacitor. In use, the MCU controller inputs a specified angle signal to the closed loop servo motor 6, so that the closed loop servo motor 6 rotates to a specified angle, and a specified number of half-circle string-parallel array capacitor groups 2 are connected to the power single pulse discharge system through the spring contact pin 4 and the spring contact pin contact, then the high-voltage power supply charges the capacitor from the positive pole 11 of the capacitor through the connecting wire, and when the capacitor reaches the target voltage, the power single pulse discharge is realized by controlling the GDT switch module through the MCU controller. During the discharge, the specified number of thin film capacitors release the power pulse at the same time, the pulse current of the specified half-circle string-parallel array capacitor group 2 is equivalently superimposed and output through the positive pole 11 of the capacitor, so as to realize the high peak current power pulse. At the same time, since the total pulse current finally output by the specified half-circle string-parallel array capacitor group 2 is composed of the independent pulse currents of the specified half-circle string-parallel array capacitor group 2, each group of thin film capacitors only bears a small part of the total output energy, so as to avoid the phenomenon of capacitor internal ablation, and the service life is greatly improved.

[0037] The internal capacitor of the half-circle array type adjustable capacitor has a half-circle array type layout and an anti-ablation feature, that is, the capacitors are arranged in a radial string-parallel layout around the center of the half-circle disc, and the dispersed pulse current prevents the capacitor from ablation. At the same time, through the linkage of the half-circle radial capacitor string-parallel array, the circular spring contact pin array and the closed loop servo motor, different numbers of capacitors are quickly added or removed from the power pulse circuit system, so as to change the pulse width of the output pulse.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The skilled person in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A semi-circular array tunable capacitor, characterized by, Including support (10), support (10) inside is provided with semicircular PCB circuit board (1), the central part of semicircular PCB circuit board (1) is provided with multiple spring contact pins, and multiple groups of semicircular series-parallel array capacitor groups (2) are staggered on the front and back surfaces. Semicircular PCB circuit board (1) is provided with circular PCB circuit board (3) above, and circular PCB circuit board (3) is connected with closed loop steering engine (6). The back surface of circular PCB circuit board (3) is uniformly distributed with multiple spring contact pins (4) with semicircle as limit, and the front surface is connected with central rotating electrode (7), central rotating electrode (7) is connected with non-standard copper connecting piece (8) through copper bearing, and non-standard copper connecting piece (8) is provided with capacitor positive electrode (11) on the top. The top of the non-standard copper connecting piece (8) is provided with a radiation-shaped PCB circuit board (5), and the radiation end of the radiation-shaped PCB circuit board (5) is provided with a circumferential negative electrode (9). The center of the radiation-shaped PCB circuit board (5) is provided with a capacitor negative electrode (12), and the circumferential negative electrode (9) is connected with the circumference of the semicircular PCB circuit board (1).

2. The half-round array variable capacitor of claim 1, wherein, The number of spring contact pins and semicircular series-parallel array capacitor groups (2) is 21, of which 10 groups of semicircular series-parallel array capacitor groups (2) are arranged on the front surface of semicircular PCB circuit board (1), and 11 groups of semicircular series-parallel array capacitor groups (2) are arranged on the back surface of semicircular PCB circuit board (1). The pin spaces of the capacitor groups on the front and back surfaces are staggered.

3. The half-round array variable capacitor of claim 2, wherein, The 21 groups of semicircular series-parallel array capacitor groups (2) are connected in parallel, each group includes 3 longitudinally connected capacitors, and each group of series-connected capacitors is arranged coaxially and radially spaced apart at the center of the semicircular PCB circuit board (1).

4. The half-round array variable capacitor of claim 3, wherein, The capacitor is a thin film capacitor.

5. The half-round array variable capacitor of claim 4, wherein, The equivalent positive electrode of the semicircular series-parallel array capacitor group (2) is located at the multiple spring contact pins, and the equivalent negative electrode is located at the circumference of the semicircular PCB circuit board (1). The circumferential negative electrode (9) and the equivalent negative electrode on the circumference of the semicircular PCB circuit board (1) are connected to the center of the radiation-shaped PCB circuit board (5), serving as the capacitor negative electrode (12).

6. The half-round array variable capacitor of claim 5, wherein, The number of spring contact pins (4) is 21, and the spring contact pins (4), the central rotating electrode (7) and the capacitor positive electrode (11) are all made of copper material.

7. The half-round array variable capacitor of claim 6, wherein, The support (10) is semicircular and made of PETG plastic 3D printing.

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