Multi-stage electromagnetic coil transmitter energy recovery circuit and electromagnetic coil transmitter

Abstract

The invention discloses a multistage electromagnetic coil transmitter energy recovery circuit and an electromagnetic coil transmitter. The multistage electromagnetic coil transmitter energy recovery circuit comprises first to eleventh diodes, first to third capacitors, first to third coils, first to eighth transistors, and first to third switches. According to the invention, coil energy is recovered to each level of capacitor by controlling the conduction time sequence of each transistor, and after the discharge of the previous level of coil is completed and the energy is recovered to the previous level of capacitor, the energy recovered in the capacitor can be released to the next level of coil when the next level of coil is triggered. The current in the coil can be quickly returned to zero, energy is recycled and acts on the next-stage coil, coil heating and the coil dragging force effect are reduced, and the outlet speed and efficiency of the electromagnetic coil emitter are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic emission, and in particular to an energy recovery circuit of a multi-stage electromagnetic coil emitter and an electromagnetic coil emitter. Background Art

[0002] Electromagnetic launch technology is a new concept of kinetic energy launch technology that emerged after chemical energy launch. According to different structures and principles, it can be divided into electromagnetic track type and electromagnetic coil type. It has significant advantages such as high launch kinetic energy, high system efficiency, high launch frequency, fast start-up time, strong continuous launch capability and strong load adjustability. It will definitely become a new launch technology to replace traditional mechanical energy launch and chemical energy launch. The coil launcher is composed of a capacitor, a drive coil, an armature and auxiliary parts. When the capacitor discharges the coil, a changing magnetic field is generated inside and outside the coil. The changing magnetic field acts on the armature to generate electromagnetic force, thereby accelerating the armature.

[0003] However, after the armature passes the center point of the coil, the electromagnetic force changes from an attractive force that attracts the armature to accelerate to a dragging force that drags the armature to decelerate; at the same time, the coil current will also cause the coil to heat up, affecting the performance of the system components. Both of these points will lead to a decrease in the armature exit speed and a decrease in the transmitter efficiency. Summary of the invention

[0004] The present invention aims to solve the technical problems in the related art at least to a certain extent. To this end, the first object of the present invention is to provide a multi-stage electromagnetic coil launcher energy recovery circuit, which can improve the exit speed and efficiency of the electromagnetic coil launcher.

[0005] A second object of the present invention is to provide an electromagnetic coil transmitter.

[0006] To achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A multi-stage electromagnetic coil transmitter energy recovery circuit, comprising:

[0008] The first diode to the eleventh diode, the first capacitor to the third capacitor, the first coil to the third coil, the first transistor to the eighth transistor, and the first switch to the third switch; wherein

[0009] The anode of the first diode is respectively connected to the cathode of the third diode, the anode of the fourth diode and the emitter of the seventh transistor, and the cathode of the first diode is respectively connected to the positive electrode of the first capacitor, the collector of the seventh transistor and the collector of the first transistor;

[0010] The positive electrode of the first coil is connected to the cathode of the second diode and the emitter of the first transistor respectively, and the negative electrode of the first coil is connected to the anode of the third diode and the collector of the second transistor respectively;

[0011] The anode of the fifth diode is respectively connected to the cathode of the seventh diode, the cathode of the fourth diode, the anode of the eighth diode and the emitter of the eighth transistor, and the cathode of the fifth diode is respectively connected to the positive electrode of the second capacitor, the collector of the third transistor and the collector of the eighth transistor;

[0012] The positive electrode of the second coil is connected to the cathode of the sixth diode and the emitter of the third transistor respectively, and the negative electrode of the second coil is connected to the anode of the seventh diode and the collector of the fourth transistor respectively;

[0013] The anode of the ninth diode is connected to the cathode of the eighth diode and the cathode of the eleventh diode respectively, and the cathode of the ninth diode is connected to the positive electrode of the third capacitor and the collector of the fifth transistor respectively;

[0014] The positive electrode of the third coil is respectively connected to the cathode of the tenth diode and the emitter of the fifth transistor, the negative electrode of the third coil is respectively connected to the anode of the eleventh diode and the collector of the sixth transistor, and the negative electrodes of the first capacitor, the second capacitor and the third capacitor are respectively connected to the anode of the second diode, the emitter of the second transistor, the anode of the sixth diode, the emitter of the fourth transistor, the anode of the tenth diode and the emitter of the sixth transistor through the first switch, the second switch and the third switch and are grounded.

[0015] Preferably, the first diode, the second diode, the fifth diode, the sixth diode, the ninth diode and the tenth diode are all freewheeling diodes.

[0016] Preferably, the third diode, the fourth diode, the seventh diode, the eighth diode and the eleventh diode are all charging isolation diodes.

[0017] Preferably, the first transistor and the second transistor are turned on or turned off at the same time.

[0018] Preferably, the third transistor, the fourth transistor and the seventh transistor are turned on or turned off at the same time.

[0019] Preferably, the fifth transistor, the sixth transistor and the eighth transistor are turned on or turned off at the same time.

[0020] Preferably, the first coil, the second coil and the third coil are sleeved outside the armature motion pipe.

[0021] To achieve the above object, a second aspect of the present invention provides an electromagnetic coil transmitter, including the above-mentioned multi-stage electromagnetic coil transmitter energy recovery circuit.

[0022] The present invention has at least the following technical effects:

[0023] 1. The present invention recovers the residual energy in the coil to the capacitor of the same level by controlling the on and off of the transistor. When the next coil is discharged, the residual energy of the capacitor of the same level is simultaneously released to the next coil, thereby improving the exit speed and efficiency of the electromagnetic coil transmitter.

[0024] 2. The present invention cuts off the coil current in advance through the circuit topology structure, shortens the current flow time of the coil, improves the heating problem of the coil, and at the same time, the energy recovered into the capacitor can shorten the capacitor charging time for the next transmission, which can improve the transmission speed and frequency.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the topological structure of the energy recovery circuit of the multi-stage electromagnetic coil transmitter according to an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the position of the tertiary coil according to an embodiment of the present invention.

[0028] Figure 3 This is the current trend diagram when the first coil L1 is discharged.

[0029] Figure 4 This is the current trend diagram when the energy of the first coil L1 is recovered.

[0030] Figure 5 This is the current trend diagram when the second coil L2 discharges.

[0031] Figure 6 This is the current trend diagram when the second coil L2 recovers energy.

[0032] Figure 7 This is the current trend diagram when the third coil L3 is discharged.

[0033] Figure 8 This is the current trend diagram when the third coil L3 recovers energy. DETAILED DESCRIPTION

[0034] The present embodiment is described in detail below, and examples of the embodiment are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The multi-stage electromagnetic coil transmitter energy recovery circuit and the electromagnetic coil transmitter of this embodiment will be described below with reference to the accompanying drawings.

[0036] Figure 1 FIG. 1 is a schematic diagram of the topological structure of the multi-stage electromagnetic coil transmitter energy recovery circuit according to an embodiment of the present invention. Figure 1 As shown, first to eleventh diodes D1 to D11, first to third capacitors C1 to C3, first to third coils L1 to L3, first to eighth transistors Igbt1 to Igbt8, and first to third switches S1 to S3.

[0037] Among them, the anode of the first diode D1 is respectively connected to the cathode of the third diode D3, the anode of the fourth diode D4 and the emitter of the seventh transistor Igbt7, and the cathode of the first diode D1 is respectively connected to the positive electrode of the first capacitor C1, the collector of the seventh transistor Igbt7 and the collector of the first transistor Igbt1; the positive electrode of the first coil L1 is respectively connected to the cathode of the second diode D2 and the emitter of the first transistor Igbt1, and the negative electrode of the first coil L1 is respectively connected to the anode of the third diode D3 and the collector of the second transistor Igbt2; the anode of the fifth diode D5 is respectively connected to the cathode of the seventh diode D7, the cathode of the fourth diode D4, the anode of the eighth diode D8 and the emitter of the eighth transistor Igbt8, and the cathode of the fifth diode D5 is respectively connected to the positive electrode of the second capacitor C2, the collector of the third transistor Igbt3 and the collector of the eighth transistor Igbt8; the positive electrode of the second coil L2 is respectively connected to the cathode of the sixth diode D6 and the third transistor Igbt 3, the cathode of the second coil L2 is respectively connected to the anode of the seventh diode D7 and the collector of the fourth transistor Igbt4; the anode of the ninth diode D9 is respectively connected to the cathode of the eighth diode D8 and the cathode of the eleventh diode D11, and the cathode of the ninth diode D9 is respectively connected to the positive electrode of the third capacitor C3 and the collector of the fifth transistor Igbt5; the positive electrode of the third coil L3 is respectively connected to the cathode of the tenth diode D10 and the emitter of the fifth transistor Igbt5, the cathode of the third coil L3 is respectively connected to the anode of the eleventh diode D11 and the collector of the sixth transistor Igbt6, and the negative electrodes of the first capacitor C1, the second capacitor C2 and the third capacitor C3 are respectively connected to the anode of the second diode D2, the emitter of the second transistor Igbt2, the anode of the sixth diode D6, the emitter of the fourth transistor Igbt4, the anode of the tenth diode D10 and the emitter of the sixth transistor Igbt6 through the first switch S1, the second switch S2 and the third switch S3 and are grounded.

[0038] It should be noted that the first diode D1, the second diode D2, the fifth diode D5, the sixth diode D6, the ninth diode D9 and the tenth diode D10 are all freewheeling diodes. The third diode D3, the fourth diode D4, the seventh diode D7, the eighth diode D8 and the eleventh diode D11 are all charging isolation diodes.

[0039] Furthermore, the first transistor Igbt1 and the second transistor Igbt2 are turned on or off at the same time. The third transistor Igbt3, the fourth transistor Igbt4 and the seventh transistor Igbt7 are turned on or off at the same time. The fifth transistor Igbt5, the sixth transistor Igbt6 and the eighth transistor Igbt8 are turned on or off at the same time.

[0040] The first coil L1, the second coil L2 and the third coil L3 are sleeved outside the armature motion pipe. Figure 2 shown.

[0041] Example

[0042] Discharge and energy recovery principle of the first coil L1:

[0043] like Figure 3 As shown, when the first switch S1 is closed, the first capacitor C1, the first transistor Igbt1, the first coil L1, the second transistor Igbt2 and the first switch S1 form a conduction loop, the first capacitor C1 discharges the first coil L1, and the armature starts to accelerate.

[0044] like Figure 4 As shown, when the armature passes through the center position of the first coil L1, the first transistor Igbt1 and the second transistor Igbt2 are turned off, the first coil L1, the third diode D3, the first diode D1, the first capacitor C1, the first switch S1 and the second diode D2 form a conduction loop, and the current of the first coil L1 flows to the first capacitor C1, thereby realizing the recovery of residual energy.

[0045] It should be understood that since the electric energy of the first coil L1 is recovered to the first capacitor C1, on the one hand, the current in the first coil L1 can be quickly returned to zero, and on the other hand, the electric energy can be reused, thereby improving the overall efficiency. Furthermore, since the coil at this level, i.e., the first coil L1, can store the remaining electric energy in the first capacitor C1 corresponding to the first coil L1, the charging time of the next transmission can be shortened during the next transmission, thereby improving the transmission efficiency.

[0046] Discharge and energy recovery principle of the second coil L2:

[0047] like Figure 5As shown, when the second switch S2 is closed, the seventh transistor Igbt7 is turned on at the same time, the second capacitor C2, the third transistor Igbt3, the second coil L2, the fourth transistor Igbt4 and the second switch S2 form a conduction loop, the second capacitor C2 discharges the second coil L2, the first capacitor C1, the seventh transistor Igbt7, the fourth diode D4, the fifth diode D5, the third transistor Igbt3, the second coil L2, the fourth transistor Igbt4 and the first switch S1 form another conduction loop, the first capacitor C1 discharges the second coil L2, and the armature starts to accelerate.

[0048] like Figure 6 As shown, when the armature passes through the center position of the second coil L2, the seventh transistor Igbt7, the third transistor Igbt3 and the fourth transistor Igbt4 are turned off, the second coil L2, the seventh diode D7, the fifth diode D5, the second capacitor C2, the second switch S2 and the sixth diode D6 form a conduction loop, and the current of the second coil L2 flows to the second capacitor C2, thereby realizing the recovery of residual energy.

[0049] It should be understood that since the electric energy of the second coil L2 is recovered to the second capacitor C2, on the one hand, the current in the second coil L2 can be quickly returned to zero, and on the other hand, the electric energy can be reused, thereby improving the overall efficiency. At the same time, since the coil at this level, i.e., the second coil L2, can store the remaining electric energy in the second capacitor C2 corresponding to the second coil L2, the charging time of the next launch can be shortened during the next launch, thereby improving the launch efficiency. Furthermore, the recovered residual energy in the first capacitor C1 can be released to the second coil L2 to further improve the armature speed and electric energy utilization.

[0050] Discharge and energy recovery principle of the third coil L3:

[0051] like Figure 7 As shown, when the third switch S3 is closed, the eighth transistor Igbt8 is turned on at the same time, the third capacitor C3, the fifth transistor Igbt5, the third coil L3, the sixth transistor Igbt6 and the third switch S3 form a conduction loop, the third capacitor C3 discharges the third coil L3, the second capacitor C2, the eighth transistor Igbt8, the eighth diode D8, the ninth diode D9, the fifth transistor Igbt5, the third coil L3, the sixth transistor Igbt6 and the second switch S2 form another conduction loop, the second capacitor C2 discharges the third coil L3, and the armature starts to accelerate.

[0052] like Figure 8As shown, when the armature passes through the center position of the third coil L3, the eighth transistor Igbt8, the fifth transistor Igbt5 and the sixth transistor Igbt6 are turned off, the third coil L3, the eleventh diode D11, the ninth diode D9, the third capacitor C3, the third switch S3 and the tenth diode D10 form a conduction loop, and the current of the third coil L3 flows to the third capacitor C3, thereby realizing the recovery of residual energy.

[0053] It should be understood that since the electric energy of the third coil L3 is recovered to the third capacitor C3, on the one hand, the current in the third coil L3 can be quickly returned to zero, and on the other hand, the electric energy can be reused, thereby improving the overall efficiency. At the same time, since the coil at this level, i.e., the third coil L3, can store the remaining electric energy in the third capacitor C3 corresponding to the third coil L3, the charging time of the next launch can be shortened during the next launch, thereby improving the launch efficiency. Furthermore, the recovered residual energy in the second capacitor C2 can be released to the third coil L3 to further improve the armature speed and electric energy utilization.

[0054] It should be understood that, based on the above embodiments, the circuit structure can be expanded as the number of coil levels increases, and is not limited to the three circuits in this design diagram, and can be designed according to specific usage requirements.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A multi-stage electromagnetic coil transmitter energy recovery circuit, characterized in that: include: first to eleventh diodes, first to third capacitors, first to third coils, first to eighth transistors, and first to third switches; in The anode of the first diode is respectively connected to the cathode of the third diode, the anode of the fourth diode and the emitter of the seventh transistor, and the cathode of the first diode is respectively connected to the positive electrode of the first capacitor, the collector of the seventh transistor and the collector of the first transistor; The positive electrode of the first coil is connected to the cathode of the second diode and the emitter of the first transistor respectively, and the negative electrode of the first coil is connected to the anode of the third diode and the collector of the second transistor respectively; The anode of the fifth diode is respectively connected to the cathode of the seventh diode, the cathode of the fourth diode, the anode of the eighth diode and the emitter of the eighth transistor, and the cathode of the fifth diode is respectively connected to the positive electrode of the second capacitor, the collector of the third transistor and the collector of the eighth transistor; The positive electrode of the second coil is connected to the cathode of the sixth diode and the emitter of the third transistor respectively, and the negative electrode of the second coil is connected to the anode of the seventh diode and the collector of the fourth transistor respectively; The anode of the ninth diode is connected to the cathode of the eighth diode and the cathode of the eleventh diode respectively, and the cathode of the ninth diode is connected to the positive electrode of the third capacitor and the collector of the fifth transistor respectively; The positive electrode of the third coil is respectively connected to the cathode of the tenth diode and the emitter of the fifth transistor, the negative electrode of the third coil is respectively connected to the anode of the eleventh diode and the collector of the sixth transistor, and the negative electrodes of the first capacitor, the second capacitor and the third capacitor are respectively connected to the anode of the second diode, the emitter of the second transistor, the anode of the sixth diode, the emitter of the fourth transistor, the anode of the tenth diode and the emitter of the sixth transistor through the first switch, the second switch and the third switch and are grounded.

2. The multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in claim 1, characterized in that: The first diode, the second diode, the fifth diode, the sixth diode, the ninth diode and the tenth diode are all freewheeling diodes.

3. The multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in claim 1, characterized in that: The third diode, the fourth diode, the seventh diode, the eighth diode and the eleventh diode are all charging isolation diodes.

4. The multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in claim 1, characterized in that: The first transistor and the second transistor are turned on or turned off at the same time.

5. The multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in claim 1, characterized in that: The third transistor, the fourth transistor and the seventh transistor are turned on or turned off at the same time.

6. The multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in claim 1, characterized in that: The fifth transistor, the sixth transistor and the eighth transistor are turned on or turned off at the same time.

7. The multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in claim 1, characterized in that: The first coil, the second coil and the third coil are sleeved outside the armature motion pipe.

8. An electromagnetic coil transmitter, characterized in that: A multi-stage electromagnetic coil transmitter energy recovery circuit comprising the multi-stage electromagnetic coil transmitter energy recovery circuit as claimed in any one of claims 1 to 7.

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