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

Abstract

The present invention discloses a multi-stage electromagnetic coil transmitter energy recovery circuit and an electromagnetic coil transmitter. The multi-stage electromagnetic coil transmitter energy recovery circuit includes a first diode to an eleventh diode, a first capacitor to a third capacitor, a first coil to a third coil, a first transistor to an eighth transistor, and a first switch to a third switch. The present invention recovers coil energy to each capacitor by controlling the conduction timing of each transistor. After the previous coil is discharged and the energy is recovered to the previous capacitor, the energy recovered in the capacitor can be released to the next coil when the next coil is triggered. The current in the coil can be quickly returned to zero, the energy is recovered and acts on the next coil, reducing coil heating and coil drag force effects, and improving the exit speed and efficiency of the electromagnetic coil transmitter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic launch, in particular to a multi-stage electromagnetic coil launcher energy recovery circuit and electromagnetic coil launcher. BACKGROUND

[0002] Electromagnetic launch technology is a new concept kinetic energy launch technology after chemical energy launch. According to the structure and principle, it can be divided into electromagnetic orbital type and electromagnetic coil type. It has the advantages of high launch kinetic energy, high system efficiency, high launch frequency, fast start-up time, strong continuous launch capability and strong load adjustability, and will become a new launch technology to replace traditional mechanical energy launch and chemical energy launch. The coil launcher is composed of a capacitor, a driving coil, an armature and auxiliary components. When the capacitor discharges to the coil, a changing magnetic field is generated inside and outside the coil, and the electromagnetic force generated by the changing magnetic field acts on the armature to accelerate the movement of the armature.

[0003] However, after the armature passes through the center point of the coil, the electromagnetic force changes from the attractive force that accelerates the armature to the drag force that decelerates the armature; at the same time, the coil current also causes the coil to heat up, affecting the performance of the system components, which will cause the outlet speed of the armature to decrease and the efficiency of the launcher to decrease. SUMMARY

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

[0005] The second object of the present application is to provide an electromagnetic coil launcher.

[0006] To achieve the above-mentioned objects, the present application realizes the following technical solutions:

[0007] A multi-stage electromagnetic coil launcher 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 connected to the cathode of the third diode, the anode of the fourth diode and the emitter of the seventh transistor, respectively, and the cathode of the first diode is connected to the positive electrode of the first capacitor, the collector of the seventh transistor and the collector of the first transistor, respectively;

[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] An anode of the fifth diode is connected to a cathode of the seventh diode, a cathode of the fourth diode, an anode of the eighth diode and an emitter of the eighth transistor respectively, and a cathode of the fifth diode is connected to a positive pole of the second capacitor, a collector of the third transistor and a collector of the eighth transistor respectively;

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

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

[0014] A positive pole of the third coil is connected to a cathode of the twelfth diode and an emitter of the fifth transistor respectively, and a negative pole of the third coil is connected to an anode of the eleventh diode and a collector of the sixth transistor respectively, and negative poles of the first capacitor, the second capacitor and the third capacitor are connected to an anode of the second diode, an emitter of the second transistor, an anode of the sixth diode, an emitter of the fourth transistor, an anode of the twelfth diode and an emitter of the sixth transistor through the first switch, the second switch and the third switch respectively and grounded.

[0015] Preferably, the first diode, the second diode, the fifth diode, the sixth diode, the ninth diode and the twelfth 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 charge isolation diodes.

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

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

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

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

[0021] To achieve the above-mentioned purpose, the second aspect of the present application provides an electromagnetic coil transmitter, comprising the multi-stage electromagnetic coil transmitter energy recovery circuit.

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

[0023] 1. The application controls the on and off of the transistor, recycles the residual energy in the coil to the capacitor of the current stage, and releases the residual energy of the capacitor of the current stage to the coil of the next stage when the coil of the next stage discharges, thereby improving the exit speed and efficiency of the electromagnetic coil transmitter.

[0024] 2. The application cuts off the coil current in advance through the circuit topology, shortens the current flow time of the coil, improves the heating problem of the coil, and the energy recycled to the capacitor can shorten the capacitor charging time of the next emission, thereby improving the emission speed and frequency.

[0025] Additional aspects and advantages of the application will be described in part in the description which follows, and in part will become apparent to those skilled in the art from the description, or by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The topological structure diagram of the multi-stage electromagnetic coil transmitter energy recovery circuit of the embodiment of the application.

[0027] Figure 2 The schematic diagram of the three-stage coil position of the embodiment of the application.

[0028] Figure 3 The current trend diagram when the first coil L1 discharges.

[0029] Figure 4 The current trend diagram when the first coil L1 recycles energy.

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

[0031] Figure 6 The current trend diagram when the second coil L2 recycles energy.

[0032] Figure 7 The current trend diagram when the third coil L3 discharges.

[0033] Figure 8 The current trend diagram when the third coil L3 recycles energy. DETAILED DESCRIPTION

[0034] The embodiment is described in detail below, and examples of the embodiment are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

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

[0036] The multi-stage electromagnetic coil transmitter energy recovery circuit and the electromagnetic coil transmitter of the embodiment are described below with reference to the drawings.Figure 1 A topological structure diagram of a multi-stage electromagnetic coil transmitter energy recovery circuit of an embodiment of the present application is shown in FIG. 1. As shown in the figure, 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 are provided. Figure 1

[0037] In the circuit, an anode of the first diode D1 is connected to a cathode of the third diode D3, an anode of the fourth diode D4, and an emitter of the seventh transistor Igbt7, respectively; a cathode of the first diode D1 is connected to a positive pole of the first capacitor C1, a collector of the seventh transistor Igbt7, and a collector of the first transistor Igbt1, respectively; a positive pole of the first coil L1 is connected to a cathode of the second diode D2 and an emitter of the first transistor Igbt1, respectively; a negative pole of the first coil L1 is connected to an anode of the third diode D3 and a collector of the second transistor Igbt2, respectively; an anode of the fifth diode D5 is connected to a cathode of the seventh diode D7, a cathode of the fourth diode D4, an anode of the eighth diode D8, and an emitter of the eighth transistor Igbt8, respectively; a cathode of the fifth diode D5 is connected to a positive pole of the second capacitor C2, a collector of the third transistor Igbt3, and a collector of the eighth transistor Igbt8, respectively; a positive pole of the second coil L2 is connected to a cathode of the sixth diode D6 and an emitter of the third transistor Igbt3, respectively; a negative pole of the second coil L2 is connected to an anode of the seventh diode D7 and a collector of the fourth transistor Igbt4, respectively; an anode of the ninth diode D9 is connected to a cathode of the eighth diode D8 and a cathode of the eleventh diode D11, respectively; a cathode of the ninth diode D9 is connected to a positive pole of the third capacitor C3 and a collector of the fifth transistor Igbt5, respectively; a positive pole of the third coil L3 is connected to a cathode of the twelfth diode D10 and an emitter of the fifth transistor Igbt5, respectively; a negative pole of the third coil L3 is connected to an anode of the eleventh diode D11 and a collector of the sixth transistor Igbt6, respectively; and negative poles of the first capacitor C1, the second capacitor C2, and the third capacitor C3 are connected to an anode of the second diode D2, an emitter of the second transistor Igbt2, an anode of the sixth diode D6, an emitter of the fourth transistor Igbt4, an anode of the twelfth diode D10, and an emitter of the sixth transistor Igbt6 through the first switch S1, the second switch S2, and the third switch S3, respectively, and 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 twelfth 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 charge isolation diodes. ​

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

[0040] Wherein, the first coil L1, the second coil L2 and the third coil L3 are sleeved outside the armature movement pipeline, as shown in Figure 2

[0041] Embodiment

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

[0043] As shown in Figure 3 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 to the first coil L1, and the armature starts to accelerate.

[0044] As shown in Figure 4 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, the current of the first coil L1 flows to the first capacitor C1, and the recovery of the remaining energy is realized.

[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, realizing the improvement of overall efficiency. Further, since the coil of the present stage, i.e. the first coil L1, can store the remaining electric energy into the first capacitor C1 corresponding to the first coil L1, the charging time of the next launch can be shortened, so that the launch efficiency can be improved.

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

[0047] As shown in Figure 5 ​As shown, when the second switch S2 is closed, the seventh transistor Igbt7 is also turned on, a conducting loop is formed by the second capacitor C2, the third transistor Igbt3, the second coil L2, the fourth transistor Igbt4 and the second switch S2, the second capacitor C2 discharges the second coil L2, another conducting loop is formed by 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, the first capacitor C1 discharges the second coil L2, and the armature starts to accelerate.

[0048] As shown, Figure 6 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, a conducting loop is formed by 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, the current of the second coil L2 flows to the second capacitor C2, and the recovery of the remaining energy is realized.

[0049] It should be understood that, due to the recovery of the electric energy of the second coil L2 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, and the overall efficiency is improved. At the same time, since 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, and the launch efficiency can be improved. Further, the recovered remaining energy in the first capacitor C1 can be released to the second coil L2 to further improve the armature speed and the electric energy utilization rate.

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

[0051] As shown, Figure 7 When the third switch S3 is closed, the eighth transistor Igbt8 is also turned on, a conducting loop is formed by the third capacitor C3, the fifth transistor Igbt5, the third coil L3, the sixth transistor Igbt6 and the third switch S3, the third capacitor C3 discharges the third coil L3, another conducting loop is formed by 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, the second capacitor C2 discharges the third coil L3, and the armature starts to accelerate.

[0052] As shown, Figure 8As shown, when the armature passes 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 twelfth diode D10 form a conduction loop, the current of the third coil L3 flows to the third capacitor C3, and the recovery of the residual energy is realized.

[0053] It should be understood that, due to the recovery of the electric energy of the third coil L3 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, and the overall efficiency is improved. At the same time, since 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 transmission can be shortened, and the transmission efficiency can be improved. Further, the recovered residual energy in the second capacitor C2 can be released to the third coil L3 to further improve the armature speed and the electric energy utilization rate.

[0054] It should be understood that, on the basis of the above-mentioned embodiments, the circuit structure can be expanded with the increase of the number of coils, and is not limited to 3 paths in the design diagram, and can be designed according to specific use requirements.

[0055] It should be noted that, in this document, the relationship terms such as first and second 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 the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0056] Although the content of the present application has been described in detail through the above-mentioned preferred embodiments, it should be recognized that the above-mentioned description should not be considered as a limitation of the present application. After reading the above-mentioned content, various modifications and alternatives of the present application will be obvious to those skilled in the art. Therefore, the protection scope of the present application should be defined 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 connected to the cathode of the third diode, the anode of the fourth diode and the emitter of the seventh transistor respectively, and the cathode of the first diode is connected to the positive electrode of the first capacitor, the collector of the seventh transistor and the collector of the first transistor respectively; 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 according to 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 according to 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 according to 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 according to 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 according to 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 according to 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: The multi-stage electromagnetic coil transmitter energy recovery circuit comprises the multi-stage electromagnetic coil transmitter energy recovery circuit according to any one of claims 1 to 7.

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