阅读说明：本技术 一种行波管集成电源 (Traveling wave tube integrated power supply ) 是由 高文雷 刘银川 陈银杏 郭陈一 王桠枫 孙建辉 王俊杰 崔美娜 于 2020-12-07 设计创作，主要内容包括：本发明提供一种行波管集成电源,包括依次层叠设置的第一至第四电路板,第一电路板上设置有逆变模块,第二电路板上设置有升压模块,第三电路板上设置有整流模块,第四电路板上设置有灯丝模块,其中逆变模块用于将输入的第一直流电压信号转换为交流电压信号；升压模块,用于对交流电压信号进行升压；整流模块,用于将升压后的交流电压信号转换为第二直流电压信号并输出至待供电的行波管；灯丝模块,用于根据第一直流电压信号向行波管的灯丝供电。本发明实施例的行波管集成电源通过根据电源中电路功能将电源设置成多个层叠的模块,在考虑到散热的同时使电源实现小型化,具有广泛的应用前景。(The invention provides a traveling wave tube integrated power supply which comprises first to fourth circuit boards which are sequentially stacked, wherein an inverter module is arranged on the first circuit board, a boosting module is arranged on the second circuit board, a rectifying module is arranged on the third circuit board, and a filament module is arranged on the fourth circuit board, wherein the inverter module is used for converting an input first direct-current voltage signal into an alternating-current voltage signal; the boosting module is used for boosting the alternating voltage signal; the rectification module is used for converting the boosted alternating-current voltage signal into a second direct-current voltage signal and outputting the second direct-current voltage signal to a traveling wave tube to be powered; and the filament module is used for supplying power to the filament of the traveling wave tube according to the first direct-current voltage signal. According to the traveling wave tube integrated power supply provided by the embodiment of the invention, the power supply is arranged into a plurality of stacked modules according to the circuit function in the power supply, the miniaturization of the power supply is realized while the heat dissipation is considered, and the traveling wave tube integrated power supply has a wide application prospect.)

1. The traveling wave tube integrated power supply is characterized by comprising a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, a power supply module, a boosting module, a rectifying module and a filament module, wherein the first circuit board, the second circuit board, the third circuit board and the fourth circuit board are sequentially stacked, the first circuit board, the second circuit board and the fourth circuit board are respectively provided with the power supply module and the filament module, and the filament module is arranged on the fourth circuit board

The inversion module is used for converting an input first direct-current voltage signal into an alternating-current voltage signal;

the boosting module is used for boosting the alternating voltage signal;

the rectification module is used for converting the boosted alternating-current voltage signal into a second direct-current voltage signal and outputting the second direct-current voltage signal to a traveling wave tube to be powered;

and the filament module is used for supplying power to the filament of the traveling wave tube according to the first direct-current voltage signal.

2. The traveling wave tube integrated power supply according to claim 1, wherein the first circuit board comprises a first sub circuit board, a second sub circuit board and a third sub circuit board encapsulated in a first housing, the first sub circuit board is attached to the first housing, and wherein the first sub circuit board is attached to the first housing

The inverter module comprises an inverter circuit, a control driving circuit and a direct current conversion circuit, the inverter circuit comprises a switch tube and a first auxiliary device, the switch tube is arranged on the first sub-circuit board, the direct current conversion circuit is arranged on the second sub-circuit board, and the auxiliary device and the control driving circuit are arranged on the third sub-circuit board.

3. The traveling wave tube integrated power supply according to claim 2, wherein the first to third sub circuit boards are sequentially stacked.

4. The traveling wave tube integrated power supply according to claim 1, wherein the boost module comprises a boost transformer and a resonant network, the resonant network forming a soft switch connected between the inverter circuit and a primary winding of the boost transformer.

5. The traveling wave tube integrated power supply according to claim 1, wherein the third circuit board comprises a fourth sub circuit board, a fifth sub circuit board and a sixth sub circuit board packaged in a second shell, the fourth sub circuit board is attached to the second shell, and wherein the fourth sub circuit board is attached to the second shell

The rectifying module comprises a rectifying circuit and a sampling circuit, the rectifying circuit comprises a diode and a second auxiliary device, the diode is arranged on the fourth sub circuit board, the second auxiliary device is arranged on the fifth sub circuit board, and the sampling circuit is arranged on the sixth sub circuit board.

6. The traveling wave tube integrated power supply according to claim 5, wherein the fourth to sixth sub circuit boards are sequentially stacked.

7. The traveling wave tube integrated circuit according to claim 2 or 3, wherein the substrate of the first sub circuit board is a ceramic board, and the switch tube is fixed by a heat conductive silicone.

8. The traveling wave tube integrated circuit according to claim 5, wherein the circuit layers of the third circuit board are impregnated with a glue.

9. The traveling wave tube integrated circuit of claim 5, wherein the substrate of the fourth sub circuit board is a ceramic board.

Technical Field

The invention relates to the technical field of power supplies, in particular to an integrated power supply of a traveling wave tube.

Background

The microwave power module with high power density is widely applied to the fields of modern electronic countermeasure, satellite communication, active phased array and the like. The traveling wave tube is a core device of the microwave power module, and the traveling wave tube can normally work only by matching multiple power supplies for power supply, and the multiple power supplies are called a traveling wave tube power supply. The power supply of the traveling wave tube generally comprises a filament power supply, a cathode power supply, an anode power supply, a grid power supply, a collector power supply and the like.

The traditional power supply design scheme of the traveling wave tube has an independent power supply parallel power supply scheme and a series power supply scheme, and each power supply can be adjusted due to the fact that the independent power supply is adopted to supply power to the traveling wave tube, and requirements on precision and stability of each power supply of the traveling wave tube can be well met. However, the use of multiple independent power supplies leads to complicated isolation design and large volume between the power supplies, and thus the requirements for miniaturized applications in the fields of vehicle-mounted transmitters, airborne decoy bombs and the like cannot be met.

Generally, in order to reduce the size of a power supply of a traveling wave tube, a method of sharing one converter is adopted, the traveling wave tube needs extremely high driving voltage, and further miniaturization of the power supply of the traveling wave tube is limited due to the defects of heat dissipation and high-voltage insulation process technologies, so that the power supply of the traveling wave tube occupies about three quarters of the size of a microwave power module, and the development requirements in the fields of modern electronic warfare electronic baits, active phased arrays and the like cannot be met.

Disclosure of Invention

In order to solve at least one of the above problems, the present invention provides a traveling wave tube integrated power supply, which includes first to fourth circuit boards stacked in sequence, wherein the first circuit board is provided with an inverter module, the second circuit board is provided with a boost module, the third circuit board is provided with a rectifier module, and the fourth circuit board is provided with a filament module, wherein the filament module is disposed on the fourth circuit board, and the inverter module is disposed on the first circuit board

The inversion module is used for converting the input first direct-current voltage signal into an alternating-current voltage signal;

the boosting module is used for boosting the alternating voltage signal;

the rectification module is used for converting the boosted alternating-current voltage signal into a second direct-current voltage signal and outputting the second direct-current voltage signal to a traveling wave tube to be powered;

and the filament module is used for supplying power to the filament of the traveling wave tube according to the first direct-current voltage signal.

Optionally, the first circuit board includes a first sub circuit board, a second sub circuit board and a third sub circuit board encapsulated in the first housing, and the first sub circuit board is attached to the first housing, wherein

The inversion module comprises an inversion circuit, a control driving circuit and a direct current conversion circuit, the inversion circuit comprises a switch tube and a first auxiliary device, the switch tube is arranged on the first sub-circuit board, the direct current conversion circuit is arranged on the second sub-circuit board, and the auxiliary device and the control driving circuit are arranged on the third sub-circuit board.

Optionally, the first to third sub circuit boards are sequentially stacked.

Optionally, the boost module includes a boost transformer and a resonant network, the resonant network forming a soft switch connected between the inverter circuit and the primary winding of the boost transformer.

Optionally, the third circuit board includes a fourth sub circuit board, a fifth sub circuit board and a sixth sub circuit board packaged in the second casing, the fourth sub circuit board is attached to the second casing, wherein

The rectifying module comprises a rectifying circuit and a sampling circuit, the rectifying circuit comprises a diode and a second auxiliary device, the diode is arranged on the fourth sub circuit board, the second auxiliary device is arranged on the fifth sub circuit board, and the sampling circuit is arranged on the sixth sub circuit board.

Optionally, the fourth to sixth sub circuit boards are sequentially stacked.

Optionally, the substrate of the first sub circuit board is a ceramic board, and the switch tube is fixed by a heat-conducting silica gel.

Optionally, a glue is poured between circuit layers of the third circuit board.

Optionally, the substrate of the fourth sub circuit board is a ceramic board.

The invention has the following beneficial effects:

aiming at the existing problems, the invention provides an integrated power supply for a traveling wave tube. The power supply is divided into a plurality of circuit board modules according to the structural characteristics of each circuit of the power supply for driving the traveling wave tube and is arranged in a layered mode, so that the heat dissipation requirement of a high-voltage power supply is met, the compact layout of the circuit is completed, the subminiature design of the traveling wave tube power supply is realized, the power density of the power supply is improved, and the power supply has a good application prospect.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an integrated power supply for a traveling wave tube according to an embodiment of the present application.

Fig. 2 is a schematic circuit diagram of an integrated circuit of a traveling wave tube according to an embodiment of the present application.

Detailed Description

In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

The embodiment of the invention provides a traveling wave tube integrated power supply which comprises a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, an inverter module, a boosting module, a rectifier module and a filament module, wherein the first circuit board, the second circuit board, the third circuit board and the fourth circuit board are sequentially stacked, the inverter module is arranged on the first circuit board, the boosting module is arranged on the second circuit board, the rectifier module is arranged on the third circuit board, and

the inversion module is used for converting the input first direct-current voltage signal into an alternating-current voltage signal;

the boosting module is used for boosting the alternating voltage signal;

the rectification module is used for converting the boosted alternating-current voltage signal into a second direct-current voltage signal and outputting the second direct-current voltage signal to a traveling wave tube to be powered;

and the filament module is used for supplying power to the filament of the traveling wave tube according to the first direct-current voltage signal.

The travelling wave tube integrated power supply provided by the embodiment divides the power supply into the circuit board modules according to the circuit structure characteristics of the power supply in the driving travelling wave tube, so that the heat dissipation requirement of the high-voltage power supply is met, the compact design of the circuit is completed, the power density of the power supply is improved, and the travelling wave tube integrated power supply has a good application prospect.

In a specific example, as shown in fig. 1, the traveling wave tube integrated power supply includes an inverter circuit board, a booster circuit board, a rectifier circuit board and a filament circuit board, which are sequentially stacked, the inverter circuit board is provided with an inverter module 100, the booster circuit board is provided with a booster module 200, the rectifier circuit board is provided with a rectifier module 300, and the filament circuit board is provided with a filament module 400.

As shown in fig. 2, the inverter module 100 includes an inverter circuit 101, a control drive circuit 103, and a dc conversion circuit 105. Optionally, the inverter circuit 101 is a full-bridge inverter circuit, although the application does not limit the specific type of the inverter circuit 101, and a half-bridge inverter circuit is also possible. The DC conversion circuit 105 is a DC/DC conversion circuit, and converts an input DC voltage signal Vin into a DC voltage signal that can be used to power a control chip in the control drive circuit. The control driving circuit 103 controls the switching tubes in the inverter circuit 101 to be turned on and off under the action of the power supplied by the dc conversion circuit 105 to convert the input dc voltage signal Vin from dc to ac, and generates an ac voltage signal, which is a high-frequency ac voltage signal.

In some alternative embodiments, the inverter module 100 has three sub-circuit boards enclosed in a housing thereof, the switching tube is disposed on a first sub-circuit board and is attached to the housing, the dc conversion circuit 105 is disposed on a second sub-circuit board, and the auxiliary devices in the inverter circuit 101 and the driving control circuit 103 are disposed on a third sub-circuit board. In the present application, the switch tube is a power switch tube, and the auxiliary device in the inverter circuit 101 indicates other circuit devices in the inverter circuit except for the switch tube. As a power switching tube, the switching tube is a main heating source of the inverter circuit, and the switching tube is independently disposed on a separate circuit board and attached to the housing of the inverter module 100, thereby facilitating concentrated heat dissipation to the outside.

The DC conversion circuit 105 is used as a DC/DC conversion circuit, the circuit size is small, the size of the PCB is less than or equal to 10mm × 16mm, and the circuit board may be attached to the casing of the inverter module 100 to facilitate heat dissipation, for example, the first sub-circuit board provided with the switching tube and the second sub-circuit board provided with the DC conversion circuit 105 may be respectively attached to two sidewalls of the casing of the inverter module 100 to facilitate heat dissipation, or during layout, the DC conversion circuit 105 may be inserted into other suitable positions in the inverter module 100 to facilitate further miniaturization. Therefore, by disposing the auxiliary devices in the inverter circuit 101 and the drive control circuit 103 on one circuit board and the dc conversion circuit 105 on another circuit board, the flexibility of the small size of the dc conversion circuit 105 can be utilized, facilitating the miniaturization and heat dissipation optimization of the inverter module 100.

In some optional embodiments, each of the inverter circuit boards is stacked, and the first sub circuit board, the second sub circuit board and the third sub circuit board are sequentially arranged from the casing, and the switching tube circuit is arranged at a position closest to the casing, so that heat dissipation to the outside through the metal material of the casing can be accelerated. In addition, the substrate of the first sub circuit board provided with the switch tube can be set as a ceramic plate, and the switch tube is fixed on the ceramic plate by using heat-conducting silica gel, so that heat dissipation is facilitated. The bottom of the shell of the traveling wave tube integrated power supply can be coated with heat-conducting silicone grease, and the outer surface of the shell, which is attached to the first sub circuit board in the inverter circuit board, is arranged at the bottom coated with the heat-conducting silicone grease, so that the heat dissipation effect is enhanced.

The boosting module 200 includes a resonant network 201 and a boosting transformer 203, and is configured to boost the ac voltage signal converted by the inverter module 100.

In order to provide a plurality of power supply voltages for the traveling wave tube, the step-up transformer 203 in this application is a high-frequency step-up transformer including a plurality of secondary windings, and steps up the high-frequency ac voltage signal generated by the inverter module into a plurality of paths of ac voltage signals, where each path of the plurality of paths of ac voltage signals is a high-frequency ac voltage signal.

The resonant network 201 is arranged between the inverter circuit 101 and the primary winding of the step-up transformer 203, and the resonant network 201 may be composed of a resonant inductor, a capacitor and a transformer leakage inductor to form a soft switch for the inverter circuit 101, so as to ensure zero-voltage turn-on and zero-voltage turn-off of a switching tube in the inverter circuit 101, reduce loss of the switching tube, improve the working efficiency of a power supply, and further reduce heat dissipation to promote further compact layout of each circuit.

The rectifying module 300 includes a rectifying circuit 301 and a sampling circuit 303 to convert the ac voltage signal boosted by the boosting module 200 into a dc voltage signal to supply the traveling wave tube, and the rectifying circuit 301 is a high voltage rectifying circuit. As shown in fig. 2, the ac voltage signal output from the rectifying circuit 301 via the plurality of secondary windings of the step-up transformer 203 is rectified into four high-voltage dc voltage signals, the cathode voltage Vk, and the collector voltages VC1, VC2, and VC 3. Those skilled in the art will appreciate that the four dc voltage signals provided to the traveling wave tube are typically extremely high in voltage, up to kilovolts, and in one specific example, the cathode voltage Vk, the collector voltages VC1, VC2, and VC3 are-3000V, 1800V, 1350V, and 900V, respectively, which is merely exemplary, and the specific voltage values can be adjusted according to the required power supply parameters of the traveling wave tube as the load.

The sampling circuit 303 samples the cathode voltage and the body current of the traveling wave tube, and feeds back the cathode voltage and the body current to the inverter module 100, and specifically feeds back the control driving circuit 103 in the inverter module 100 as an adjustment parameter for controlling the switching tube of the inverter circuit 101, so that the control driving circuit 103 controls the inverter circuit 101 according to the sampling of the sampling circuit, thereby further performing voltage stabilization and overcurrent protection on the dc voltage signal output by the high-voltage rectification circuit 301 of the rectification module 300.

Because of the high voltage power supply, the high voltage power devices in the rectifier module 300 dissipate a lot of heat during operation, and the high voltage rectifier circuit needs high voltage insulation. Optionally, the rectifying circuit board provided with the rectifying module 300 includes three sub-circuit boards, namely a diode circuit board, an auxiliary device circuit board and a sampling circuit board, which are packaged in a housing of the rectifying circuit board, the devices except for the diode in the rectifying circuit 301 are auxiliary devices, the diode circuit board is provided with the diode of the rectifying circuit 301, the auxiliary device circuit board is provided with auxiliary devices, such as a capacitor, a resistor and the like, and the sampling circuit board is provided with the sampling circuit 303.

Optionally, the substrate of the diode circuit board is a ceramic board to increase thermal conductivity. In addition, the diode circuit board can be placed on the bottom layer of the casing of the bonding rectification module 300, the material of the casing is usually aluminum, and good heat conduction can be further ensured by arranging the diode circuit board close to the casing. Optionally, the diode circuit board, the auxiliary device circuit board and the sampling circuit board are sequentially stacked. In this application, can also pour into the colloid between rectifier module 300's circuit layer, through setting rectifier module 300 in the module of separating and individual encapsulation, made things convenient for and dispel the heat with the mode of encapsulating the colloid, still solved the high-voltage insulation problem between the high-voltage rectifier circuit simultaneously through the encapsulating in addition, the colloid can be HM305 organosilicon sealant for example, can also mix the vulcanizing agent according to certain ratio, this application does not aim at the concrete type of the colloid that the restriction was poured.

In the above manner, the rectifier module 300 splits the rectifier circuit 301 into two circuit boards according to the structural characteristics of different circuit structures, and each circuit board in the rectifier module 300 is arranged in a layered structure, so that the problems of compact design and heat dissipation are solved, and the power density of the power supply is effectively improved. In addition, through setting up the circuit layering in rectifier module 300 in an solitary encapsulation casing, convenient encapsulating has good high-voltage insulation effect when radiating.

The filament module 400 includes a filament power supply, which is an independent DC/DC power supply to convert the input power voltage Vin into the power supply voltage required by the filament of the traveling wave tube. For example, if the input power voltage Vin is a DC voltage of 28V and the required power voltage of the filament of the traveling wave tube is 6.5V, the filament module 400 is a DC/DC voltage step-down circuit. Of course, this is merely exemplary and the particular form is not intended to be limiting.

Through the travelling wave tube integrated power supply arranged above, the power supply volume of the travelling wave tube integrated power supply is less than or equal to 130mm 32mm 17mm, and therefore the travelling wave tube integrated power supply has the advantages of good heat dissipation, good high-voltage insulation effect, small volume, light weight and good compacting effect.

Aiming at the existing problems, the invention provides an integrated power supply for a traveling wave tube. The traveling wave tube integrated power supply comprises an inversion module, a boosting module, a rectification module and a filament module which are sequentially stacked, the power supply is divided into a plurality of circuit board modules according to the structural characteristics of each circuit of the power supply for driving the traveling wave tube and is arranged in a layered mode, the heat dissipation requirement of a high-voltage power supply is met, the compact layout of the circuit is achieved, and the microminiaturization of the traveling wave tube power supply is achieved.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.