阅读说明：本技术 毫秒级的能量传递电路 (Energy transfer circuit of millisecond level ) 是由 潘丽 潘峰 董凡 陈宇渊 于 2019-11-21 设计创作，主要内容包括：一种毫秒级能量传递电路,包括初级能源、能量传递回路、负载电容、高压测量电路和闭环控制电路。本发明采用脉冲功率技术、高压开关技术和精确测量控制技术,输出高电压,毫秒级时间给负载电容能量泵浦,相比较传统的能量传递电路,可实现给大容量电容的毫秒级能量泵浦；同时高压测量电路及闭环控制电路对高压开关的精确控制,按照用户对电压需求,实现对输出负载电容精确能量泵浦。(A millisecond-level energy transfer circuit comprises a primary energy source, an energy transfer circuit, a load capacitor, a high-voltage measuring circuit and a closed-loop control circuit. The invention adopts pulse power technology, high-voltage switch technology and accurate measurement control technology to output high voltage and millisecond-level time to the energy pumping of the load capacitor, and compared with the traditional energy transfer circuit, the invention can realize millisecond-level energy pumping of a large-capacity capacitor; meanwhile, the high-voltage measuring circuit and the closed-loop control circuit accurately control the high-voltage switch, and accurate energy pumping of the output load capacitor is achieved according to the voltage requirement of a user.)

1. A millisecond-level energy transfer circuit is characterized by comprising a primary energy source (1), a millisecond-level energy transfer circuit (2), a load capacitor bank (3), a high-voltage measuring circuit (4) and a closed-loop control circuit (5);

the millisecond-level energy transfer circuit (2) comprises a high-voltage switch (22) and a pulse forming inductor (23) which are sequentially connected, the other end of the high-voltage switch (22) is connected with one end of the primary energy source (1), and the other end of the pulse forming inductor (23) is connected with one end of the load capacitor bank (3);

one end of the primary energy source (1) is connected with one end of the load capacitor bank (3) through the energy transfer circuit (2), and the other end of the primary energy source (1) is directly connected with the other end of the load capacitor bank (3);

two ends of the load capacitor bank (3) are respectively connected with two ends of the high-voltage measuring circuit (4);

the high-voltage measuring circuit (4) is formed by connecting a capacitor and a series resistor in parallel, the capacitor is a high-voltage capacitor and a common capacitor, the resistor is a high-voltage high-precision low-temperature drift resistor and a high-precision low-temperature drift resistor, the central points of the two resistors and the two capacitors are short-circuited to form a third port, two ends of the high-voltage measuring circuit (4) are connected with two ends of a load capacitor bank (3) respectively, the third port is connected with the positive input end of a comparator (54) of the closed-loop control circuit (5), the negative input end of the comparator (54) is connected with a user setting end, and the output end of the comparator (54) is connected with the input end of the high-voltage switch driver (53);

the closed-loop control circuit (5) consists of a high-voltage switch (51), a current-limiting resistor (52), a high-voltage switch driver (53) and a comparator (54), wherein the negative electrode of the high-voltage switch (51) is connected with one end of the current-limiting resistor (52) in series, the positive electrode of the high-voltage switch (51) is connected with the connection point of the high-voltage switch (22) and the pulse forming inductor (23), the other end of the current-limiting resistor (52) is connected with the other end of the pulse forming inductor (23), and the output end of the high-voltage switch driver (53) is connected with the control end of the high-voltage switch (51).

2. The millisecond-scale energy transfer circuit according to claim 1, wherein the primary energy source (1) is a high-voltage oil-filled capacitor, a high-voltage metal film capacitor, an aluminum-air battery, a super capacitor or a lithium battery.

Technical Field

The invention relates to a high-voltage energy transfer circuit, in particular to a millisecond-level energy transfer circuit which is used for the fields of inertia restraint, high-speed kinetic energy generation, pulse power and the like.

Background

The traditional energy transfer circuit adopts a high-frequency power supply technology, applies an advanced intelligent dynamic adjustment technology, and has the characteristics of high efficiency, simplicity in operation and the like. The internal power devices of the energy transfer circuit comprise a pulse transformer, an inductor, a capacitor, a semiconductor switching device and the like, and the output peak power of the traditional energy transfer circuit is limited by the leakage inductance of the pulse transformer and the current carrying capacity of the semiconductor switching device, so that high-voltage energy pumping of a large-capacity capacitive load at millisecond level cannot be realized.

The pulse power technology is an electro-physical technology which quickly compresses, converts or directly releases energy with higher density stored slowly to a load. The essence is that the pulse energy is compressed on a time scale to obtain a high peak power output in a very short time, a very high voltage, a very high temperature can be generated in a very short time, the particles can be accelerated to a very high speed, a very large force can be generated, and the target can also be detected remotely. Is widely applied in various fields such as national defense scientific research, high and new technology research, civil industry and the like.

The basic principle of the pulse power technology is as follows: the energy injected by the front end is compressed to be output in a very short time, and then the output power can be increased. According to the basic principle of pulse power technology, large energy is injected into the front end, and the energy is transmitted to a load capacitor by using a high-voltage switching technology, so that high-voltage energy pumping for a large-capacity load capacitor at millisecond level can be realized.

The high-voltage switch technology has the advantages of simple loop, strong overcurrent capacity, high-power output in a very short time, convenience in production and installation and the like, so that the millisecond-level energy transfer circuit which can pump energy for a large-capacity capacitor in millisecond and is convenient to produce is manufactured by adopting the pulse power technology and the high-voltage switch technology.

Disclosure of Invention

The invention provides a millisecond-level energy transfer circuit, which adopts a power pulse technology and a high-voltage switch technology to achieve the purpose of pumping energy to a large-capacity capacitor within milliseconds.

The technical solution of the invention is as follows:

a millisecond-level energy transfer circuit is characterized by comprising a primary energy source, a millisecond-level energy transfer circuit, a load capacitor bank, a high-voltage measuring circuit and a closed-loop control circuit,

the millisecond-level energy transfer circuit comprises a high-voltage switch and a pulse forming inductor which are sequentially connected, the other end of the high-voltage switch is connected with one end of the primary energy source, and the other end of the pulse forming inductor is connected with one end of the load capacitor bank;

one end of the primary energy source is connected with one end of the load capacitor bank through the energy transfer circuit, and the other end of the primary energy source bank is directly connected with the other end of the load capacitor bank;

two ends of the load capacitor bank are respectively connected with two ends of the high-voltage measuring circuit;

the high-voltage measuring circuit is formed by connecting a capacitor and a series resistor in parallel, the capacitor is a high-voltage capacitor and a common capacitor, the resistor is a high-voltage high-precision low-temperature drift resistor and a high-precision low-temperature drift resistor, the central points of the two resistors and the two capacitors are short-circuited to form a third port, two ends of the high-voltage measuring circuit are connected with two ends of a load capacitor bank respectively, the third port is connected with the positive input end of a comparator of the closed-loop control circuit, the negative input end of the comparator is connected with a user setting end, and the output end of the comparator is connected with the input end of the high-voltage switch driver;

the closed-loop control circuit is composed of a high-voltage switch, a current-limiting resistor, a high-voltage switch driver and a comparator, wherein the anode of the high-voltage switch is connected with one end of the current-limiting resistor in series, the cathode of the high-voltage switch is connected with the connection point of the high-voltage switch and the pulse forming inductor, the other end of the current-limiting resistor is connected with the other end of the pulse width forming inductor, and the output end of the high-voltage switch driver is connected with the control end of the high-voltage switch.

The primary energy source adopts a high-voltage oil-immersed capacitor, a high-voltage metal film capacitor, an aluminum air battery, a super capacitor or a lithium battery.

Optionally, the high-voltage switch adopts a thyristor module.

The invention has the beneficial effects that:

the invention adopts the power pulse technology and the high-voltage switch technology, can realize millisecond-level high-voltage energy pumping for the large-capacity capacitor bank, greatly shortens the energy transfer time under the same energy transmission compared with the traditional energy transfer circuit, can be completely isolated from a power grid during the operation period of the energy transfer circuit, and can realize a mobile (such as vehicle-mounted) energy pumping operation mode.

Drawings

FIG. 1 is a functional block diagram of the millisecond level energy transfer circuit of the present invention;

FIG. 2 is a circuit schematic of the millisecond level energy transfer circuit of the present invention;

FIG. 3 is a circuit schematic of the energy delivery circuit of the present invention;

FIG. 4 is a schematic diagram of the closed loop control circuit of the present invention;

FIG. 5 is a schematic diagram of an energy delivery circuit voltage waveform of the present invention;

fig. 6 is a schematic diagram of the current waveform of the energy delivery circuit of the present invention.

Detailed Description

The invention is further illustrated with reference to the following figures and examples without thereby limiting the scope of the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, it can be seen that the millisecond-level energy transmission circuit of the present invention includes a primary energy source 1, a millisecond-level energy transmission circuit 2, a load capacitor bank 3, a high voltage measurement circuit 4 and a closed loop control circuit 5,

referring to fig. 3, the millisecond-level energy transmission circuit 2 includes a high-voltage switch 22 and a pulse shaping inductor 23 connected in sequence, where the other end of the high-voltage switch 22 is connected to one end of the primary energy source 1, and the other end of the pulse shaping inductor 23 is connected to one end of the load capacitor bank 3;

one end of the primary energy source 1 is connected with one end of the load capacitor bank 3 through the energy transfer circuit 2, and the other end of the primary energy source 1 is directly connected with the other end of the load capacitor bank 3;

two ends of the load capacitor group 3 are respectively connected with two ends of the high-voltage measuring circuit 4;

the high-voltage measuring circuit 4 is formed by connecting a capacitor and a series resistor in series in parallel, the capacitor is a high-voltage capacitor and a common capacitor, the resistor is a high-voltage high-precision low-temperature drift resistor and a high-precision low-temperature drift resistor, the central points of the two resistors and the two capacitors are short-circuited to form a third port, two ends of the high-voltage measuring circuit 4 are connected with two ends of the load capacitor group 3 respectively, the third port is connected with the positive input end of a comparator 54 of the closed-loop control circuit 5, the negative input end of the comparator 54 is connected with a user setting end, and the output end of the comparator 54 is connected with the input end of the high-voltage switch driver 53;

referring to fig. 4, the closed-loop control circuit 5 is composed of a high-voltage switch 51, a current-limiting resistor 52, a high-voltage switch driver 53 and a comparator 54, wherein the positive electrode of the high-voltage switch 51 is connected in series with one end of the current-limiting resistor 52, the negative electrode of the high-voltage switch 51 is connected with the connection point of the high-voltage switch 22) and the pulse shaping inductor 23, the other end of the current-limiting resistor 52 is connected with the other end of the pulse-width shaping inductor 23, and the output end of the high-voltage switch driver 53 is connected with the control end of the high-voltage switch 51.

The primary energy source 1 adopts a high-voltage oil-immersed capacitor, a high-voltage metal film capacitor, an aluminum air battery, a super capacitor or a lithium battery.

The measured value of the high voltage measuring circuit 4 is connected with a closed loop control circuit 5. The primary energy source 1 controls a high-voltage switch 21 in the energy transfer circuit 2 to deliver the stored energy to the load capacitor bank 3 through the closed-loop control circuit 5, and the energy transfer circuit 2 converts the energy into high-voltage pulses of millisecond level and delivers the high-voltage pulses to the load capacitor bank 3.

In this embodiment, the load capacitor group 3 includes a plurality of high-voltage capacitors 31 connected in parallel, and two ends of the load capacitor group 3 are respectively connected to two ends of the high measurement loop 4 and are simultaneously connected to one end of the pulse width shaping inductor 23 of the energy transfer circuit 2 and one end of the primary energy source 1.

In this embodiment, the high-voltage measurement circuit 4 is formed by connecting a high-voltage capacitor 41, a capacitor 42, a high-voltage high-precision low-temperature drift resistor 43, and a high-precision resistor 44 in series and parallel, the high-voltage measurement circuit 4 has 3 ports, two ends of the high-voltage measurement circuit are respectively connected with the load capacitor bank 3, and the other end of the high-voltage measurement circuit is used as a measurement value output end and connected with a comparator of the closed-loop control circuit 5.

In this embodiment, the high-voltage switch 22 and the high-voltage switch 51 are semiconductor devices, and thyristors are used; the primary energy source 1 adopts a high-voltage oil-immersed capacitor, a high-voltage metal film capacitor, an aluminum air battery, a super capacitor or a lithium battery.

The features and functions of the present invention will be further understood from the following description.

The millisecond-level energy transfer circuit is applied to an electromagnetic gun. In particular, as shown in fig. 2, the primary energy source 1 functions to provide energy to the energy transfer circuit; the primary energy source 1 is connected with the energy transfer circuit 2; an energy transfer circuit 2 for generating high-voltage pulses in the order of milliseconds; it structurally comprises: a high-voltage switch 21 for generating a millisecond-level high-voltage pulse; a pulse width shaping inductor 22 that controls the output pulse width; the energy transfer circuit 2 is connected with the load capacitor bank 3;

the load capacitor group 3 is formed by connecting a plurality of high-voltage capacitors in parallel, and two ends of the load capacitor group are respectively connected with the high-voltage measuring circuit 4;

the high-voltage measuring circuit 4 is used for measuring the voltage values at two ends of the load capacitor group 3 at any time and providing a low-voltage measuring value which is proportional to the voltage at two ends of the load capacitor for the closed-loop control circuit 5; one end of the high-voltage measuring circuit 4 is connected with the closed-loop control circuit 5;

and the closed-loop control circuit 5 is used for comparing the low-voltage measured value of the high-voltage measuring circuit 4 with the set value of the user setting end 55 after receiving the low-voltage measured value, so as to control the action of the high-voltage switch 41 and realize that the output voltage at the two ends of the load capacitor 3 meets the requirements of customers.

The specific working process of the millisecond-level energy transfer circuit is as follows: the primary energy source 1 is charged with the required energy by a certain device; the energy transmission circuit 2 forms pulse voltage with a certain width by controlling the high-voltage switch 21 to transmit energy to the load capacitor bank 3; the voltage at two ends of the load capacitor group 3 is measured by the high voltage measuring circuit 4, the measured value is input to the closed loop control circuit 5 and is compared with the user setting parameter 55 at the other end of the comparator 54 in the closed loop control circuit, the obtained value is connected to the switch driving circuit, the high voltage switch 51 in the closed loop control circuit 5 is controlled to act, and when the measured value of the high voltage measuring circuit 4 is equal to the user setting parameter 55, the high voltage switch 51 is controlled to be closed, so that the capacitance voltage on the load capacitor group 3 reaches the voltage value satisfied by the user.

In summary, the millisecond-level energy transfer circuit provided by the invention outputs the millisecond-level pulse voltage by adopting the power pulse technology and the high-voltage switching technology, and compared with the traditional energy transfer circuit, the millisecond-level high-voltage energy pump of a large-capacity capacitor is realized, so that the energy transfer is high in frequency; during the use of the energy transfer circuit, the primary energy storage capacitor can be disconnected from the power grid if the energy is enough, and the energy can be transferred to the load for a plurality of times in a mobile mode, such as a vehicle.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.