Distributed output rectification filter circuit and welding machine

Abstract

The utility model discloses a distributed output rectification filter circuit and welding machine, including rectification module and at least one reactance component, rectification module at least includes first diode and second diode, reactance component includes first inductor and second inductor, the output end of first diode is connected with the first end of first inductor, and the output end of second diode is connected with the second end of second inductor. The output end of the second diode is connected with the first end of the second inductor, the second end of the first inductor is connected with the second end of the second inductor to form a power output end, the inductance capacity selected by an inductance element is reduced, the size and the weight of the reactor are greatly reduced, copper and iron materials are saved, the cost is reduced, the occupied space of the element is reduced, and the installation space is saved; and circuit dynamic characteristics are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a distributed output rectification and filtering circuit and a welding machine. Background Art

[0002] The power circuit of an existing welding machine usually includes an inverter module 910, a transformer module 920, a rectifier module 930 and a filter inductor 940. The inverter module 910 modulates the power supply into AC power, which is then output to the filter inductor 940 after being transformed by the transformer module 920 and rectified by the rectifier module 930. Energy is stored and discharged in the filter inductor 940, which can filter the pulsation in the current and reduce electromagnetic interference, thereby providing welding power for the welding gun of the welding machine.

[0003] However, if Figure 1 As shown, after the alternating current output from the transformer module 920 passes through the rectifier module 930, the supply current flows from the first end of the filter inductor 940 to the second end of the filter inductor 940, so that the magnetic flux on the filter inductor 940 is continuously accumulated, and the magnetic flux can only be slowly dissipated over time. Therefore, in order not to affect the performance of the filter inductor 940, the filter inductor 940 needs to be selected from components with larger inductance capacity. As a result, in the layout of the welding machine, the filter inductor 940 is larger in size and needs to occupy more space, which also means an increase in cost and higher requirements for heat dissipation. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a distributed output rectifier filter circuit and a welding machine, which reduces the inductance capacity of the inductor element, reduces the cost, reduces the space occupied by the element, and improves the dynamic characteristics of the circuit.

[0005] A distributed output rectifier and filter circuit according to an embodiment of the first aspect of the utility model includes: a rectifier module, the rectifier module includes at least a first diode and a second diode; at least one reactance component, the reactance component includes a first inductor and a second inductor coupled to each other, the output end of the first diode is connected to the first end of the first inductor, the output end of the second diode is connected to the first end of the second inductor, and the second end of the first inductor is connected to the second end of the second inductor to form a power supply output end.

[0006] A distributed output rectification and filtering circuit according to an embodiment of the utility model has at least the following beneficial effects:

[0007] The utility model discloses a distributed output rectifier filter circuit, the input end of the rectifier module is used to access alternating current, part of the current can pass through a first diode and be output from the output end of the first diode to a first inductor, part of the current can pass through a second diode and be output from the output end of the second diode to a second inductor, both the first inductor and the second inductor can store energy and discharge, thereby filtering out the pulsation of the passing current and reducing electromagnetic interference, and then the current is output from the output end of the power supply for use by the load, compared with the situation in which the output end of the first diode in a traditional power supply circuit is first connected to the output end of the second diode and then connected to the filter inductor, the inductance capacity parameter requirements of the first inductor and the second inductor are correspondingly reduced, the volume and weight of the reactor are greatly reduced, copper and iron materials are saved, costs are reduced, the space occupied by components is reduced, installation space is saved, and circuit dynamic characteristics are improved.

[0008] According to some embodiments of the present invention, the first inductor and the second inductor are coupled to each other, current can flow from the first end of the first inductor to the second end of the first inductor and from the first end of the second inductor to the second end of the second inductor, and the magnetic flux generated by the current flowing through the first inductor and the magnetic flux generated by the current flowing through the second inductor can offset each other.

[0009] According to some embodiments of the present invention, the rectifier module includes at least a first rectifier unit, and the first diode and the second diode constitute at least a part of the first rectifier unit.

[0010] According to some embodiments of the utility model, the rectifier module also includes a second rectifier unit, there are two reactance components, the first diode and the second diode are correspondingly connected to the first inductor and the second inductor in one of the reactance components, the second rectifier unit includes at least a third diode and a fourth diode, the output end of the third diode is connected to the first end of the first inductor in another reactance component, the output end of the fourth diode is connected to the second end of the second inductor in another reactance component, the second end of the first inductor in one of the reactance components is respectively connected to the second end of the second inductor in one of the reactance components, the second end of the first inductor in another reactance component and the second end of the second inductor in another reactance component to form the power supply output end.

[0011] According to some embodiments of the present invention, the rectifier module includes a first rectifier unit and a second rectifier unit, the first diode constitutes at least a part of the first rectifier unit, and the second diode constitutes at least a part of the second rectifier unit.

[0012] According to some embodiments of the utility model, the distributed output rectification and filtering circuit also includes a transformer component, the transformer component includes a primary coil, a first secondary coil and a second secondary coil coupled to each other, the first end of the primary coil, the first end of the first secondary coil and the first end of the second secondary coil are mutually connected, the first rectifier unit also includes at least a third diode, the second rectifier unit also includes at least a fourth diode, there are two reactance components, the first end of the first secondary coil is connected to the input end of the first diode, the second end of the first secondary coil is connected to the input end of the third diode, the first end of the second secondary coil is connected to the input end of the second diode, and the second end of the second secondary coil is connected to the input end of the second diode. The end is connected to the input end of the fourth diode, the output end of the first diode is connected to the first end of the first inductor in one of the reactance components, the output end of the third diode is connected to the first end of the second inductor in one of the reactance components, the output end of the second diode is connected to the first end of the second inductor in another of the reactance components, the output end of the fourth diode is connected to the first end of the first inductor in another of the reactance components, and the second end of the first inductor in one of the reactance components is respectively connected to the second end of the second inductor in one of the reactance components, the second end of the first inductor in another of the reactance components and the second end of the second inductor in another of the reactance components to form the power supply output end.

[0013] According to some embodiments of the utility model, the distributed output rectification and filtering circuit also includes a transformer component, the transformer component includes a primary coil, a first secondary coil and a second secondary coil coupled to each other, the first end of the primary coil, the first end of the first secondary coil and the first end of the second secondary coil are mutually connected, the first rectifier unit also includes at least a third diode, the second rectifier unit also includes at least a fourth diode, there are two reactance components, the first end of the first secondary coil is connected to the input end of the first diode, the second end of the first secondary coil is connected to the input end of the third diode, the first end of the second secondary coil is connected to the input end of the second diode, and the second end of the second secondary coil is connected to the input end of the second diode. The end is connected to the input end of the fourth diode, the output end of the first diode is connected to the first end of the first inductor in one of the reactance components, the output end of the second diode is connected to the first end of the second inductor in one of the reactance components, the output end of the third diode is connected to the first end of the first inductor in another of the reactance components, the output end of the fourth diode is connected to the first end of the second inductor in another of the reactance components, and the second end of the first inductor in one of the reactance components is respectively connected to the second end of the second inductor in one of the reactance components, the second end of the first inductor in another of the reactance components, and the second end of the second inductor in another of the reactance components to form the power supply output end.

[0014] According to some embodiments of the present invention, both the first rectifier unit and the second rectifier unit are full-bridge rectifier units.

[0015] According to some embodiments of the present invention, both the first rectifying unit and the second rectifying unit are full-wave rectifying units.

[0016] The welding machine according to the second embodiment of the utility model comprises a distributed output rectification and filtering circuit disclosed in any of the above embodiments, and the power output end is connected to the welding gun of the welding machine to provide welding power for the welding gun.

[0017] The welding machine according to the embodiment of the utility model has at least the following beneficial effects:

[0018] The utility model welding machine applies a distributed output rectifier filter circuit disclosed in any of the above embodiments to provide welding power for the welding gun, reduce the inductance capacity selected for the inductor element, greatly reduce the volume and weight of the reactor, save copper and iron materials, reduce costs, reduce the space occupied by components, save installation space, and improve the dynamic characteristics of the circuit.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 A circuit diagram of one embodiment of a conventional welding machine power supply circuit;

[0022] Figure 2 This is a circuit diagram of one embodiment of the inverter module part of the distributed output rectifier filter circuit of the utility model;

[0023] Figure 3 This is a circuit diagram of the first embodiment of the distributed output rectifier filter circuit of the utility model;

[0024] Figure 4 This is a circuit diagram of the second embodiment of the distributed output rectifier and filter circuit of the utility model;

[0025] Figure 5 This is a circuit diagram of the third embodiment of the distributed output rectifier and filter circuit of the utility model;

[0026] Figure 6 This is a circuit diagram of a fourth embodiment of the distributed output rectifier and filter circuit of the utility model;

[0027] Figure 7 This is a circuit diagram of a fifth embodiment of the distributed output rectifier and filter circuit of the utility model;

[0028] Figure 8 This is a circuit diagram of a sixth embodiment of the distributed output rectifier and filter circuit of the utility model;

[0029] Fig. 9 This is a circuit diagram of the seventh embodiment of the distributed output rectifier and filter circuit of the utility model;

[0030] Fig.10 This is a circuit diagram of an eighth embodiment of the distributed output rectifier and filter circuit of the utility model;

[0031] Fig.11 This is a circuit diagram of a ninth embodiment of the distributed output rectifier and filter circuit of the utility model;

[0032] Fig.12 This is a circuit diagram of the tenth embodiment of the distributed output rectifier and filter circuit of the utility model;

[0033] Fig.13 This is a circuit diagram of the eleventh embodiment of the distributed output rectifier filter circuit of the utility model;

[0034] Fig.14 A schematic diagram of the structure of one embodiment of a reactance component.

[0035] Reference numerals:

[0036] < Prior Art >

[0037] Inverter module 910 ; transformer module 920 ; rectifier module 930 ; filter inductor 940 .

[0038] <The utility model>

[0039] Input rectifier module 100; inverter module 200; transformer assembly 300; primary coil 310; first secondary coil 320; second secondary coil 330; first rectifier unit 410; second rectifier unit 420; first diode 510; second diode 520; third diode 530; fourth diode 540; fifth diode 550; sixth diode 560; seventh diode 570; eighth diode 580; first reactance assembly 610; second reactance assembly 620; first inductor 630; second inductor 640; magnetic core 700; load 800. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figure 2-Figure 14 As shown, a distributed output rectifier and filter circuit according to an embodiment of the first aspect of the utility model includes a rectifier module and at least one reactance component, the rectifier module includes at least a first diode 510 and a second diode 520, the reactance component includes a first inductor 630 and a second inductor 640, the output end of the first diode 510 is connected to the first end of the first inductor 630, the output end of the second diode 520 is connected to the first end of the second inductor 640, and the second end of the first inductor 630 and the second end of the second inductor 640 are connected to form a power supply output end.

[0045] Among them, Figure 2 As shown, the distributed output rectification and filtering circuit can be applied to provide welding power for the welding machine. Therefore, the distributed output rectification and filtering circuit can also include an input rectifier module 100, an inverter module 200 and a transformer assembly 300. The input rectifier module 100 can also be composed of a diode. The input end of the input rectifier module 100 is connected to an AC power supply. The input rectifier module 100 rectifies the AC power supply. The inverter module 200 can be composed of a plurality of semiconductor switch tubes. The DC power output by the input rectifier module 100 is inverted, and the AC power is output to the transformer assembly 300 for transformation, and then output to the rectifier module.

[0046] Generally speaking, the output ends of the first diode 510 and the second diode 520 can be understood as the cathodes of the diodes, and the first end and the second end of the first inductor 630 and the second inductor 640 are the opposite ends of the inductors.

[0047] In the distributed output rectifier filter circuit of the utility model, the input end of the rectifier module is used to access alternating current. Part of the current can pass through the first diode 510 and be output from the output end of the first diode 510 to the first inductor 630, and part of the current can pass through the second diode 520 and be output from the output end of the second diode 520 to the second inductor 640. Both the first inductor 630 and the second inductor 640 can store energy and discharge, thereby filtering out the pulsation of the passing current and reducing electromagnetic interference. Then the current is output from the output end of the power supply for use by the load 800. Compared with the situation in which the output end of the first diode 510 in the traditional power supply circuit is first connected to the output end of the second diode 520 and then connected to the filter inductor, the inductance capacity parameter requirements of the first inductor 630 and the second inductor 640 are correspondingly reduced, which greatly reduces the volume and weight of the reactor, saves copper and iron materials, reduces costs, reduces the space occupied by components, saves installation space, and improves the dynamic characteristics of the circuit.

[0048] During operation, when current flows through the first inductor 630 and the second inductor 640, magnetic flux will be formed in the inductor. The accumulation of magnetic flux cannot be released quickly, which will affect the performance of the inductor element. Therefore, in some embodiments of the present invention, such as Figure 2-14 As shown, the first inductor 630 and the second inductor 640 can be coupled to each other, current can flow from the first end of the first inductor 630 to the second end of the first inductor 630 and from the first end of the second inductor 640 to the second end of the second inductor 640, and the magnetic flux generated by the current flowing through the first inductor 630 and the magnetic flux generated by the current flowing through the second inductor 640 can offset each other.

[0049] Since the first inductor 630 and the second inductor 640 are coupled to each other, the magnetic flux generated by the current flowing through the first inductor 630 and the magnetic flux generated by the current flowing through the second inductor 640 cancel each other out, ensuring that the first inductor 630 and the second inductor 640 maintain good performance. In addition, by cooperating with multiple inductor elements to process the current, the inductance capacitance parameter requirements of the inductor elements can also be reduced accordingly.

[0050] Specifically, the reactance component further includes a magnetic core 700 , and the first inductor 630 and the second inductor 640 are both wound on the magnetic core 700 .

[0051] Among them, the magnetic core piece 700 can be made of an iron core, and the magnetic core piece 700 can be in a rod shape or a ring shape. The first inductor 630 and the second inductor 640 are both wound on the magnetic core piece 700. The different winding directions or the circuit wiring make the current input directions different, which can make the magnetic fluxes generated by the first inductor 630 and the second inductor 640 opposite to each other in the magnetic core piece 700, so that during the operation of the rectifier and filter circuit, the opposite magnetic fluxes can offset each other.

[0052] In some embodiments of the present invention, the reactance component may also be formed by a wire led from the cathode of the first diode 510 passing through one or more magnetic rings to form a first inductor 630 and a wire led from the cathode of the second diode 520 passing through one or more magnetic rings to form a second inductor 640.

[0053] It should be noted that a full-wave rectifier unit or a full-bridge rectifier unit can be selected in the rectifier module, and it can be understood that, regardless of whether it is a full-wave rectifier unit or a full-bridge rectifier unit, the first diode 510 and the second diode 520 are two diodes close to the output end of the rectifier module, the cathode of the first diode 510 is connected to the first end of the first inductor 630, the cathode of the second diode 520 is connected to the first end of the second inductor 640, and then, the second end of the first inductor 630 is connected to the second end of the second inductor 640, and the cathode of the first diode 510 and the cathode of the second diode 520 are not directly connected.

[0054] In some embodiments of the present invention, Figure 3 , 4 As shown in Figures 5, 9 and 10, the rectifier module at least includes a first rectifier unit 410, and the first diode 510 and the second diode 520 constitute at least part of the first rectifier unit 410.

[0055] Among them, Figure 3 , 4 , 5, the first rectifier unit 410 is a full-wave rectifier unit, such as Figure 3 As shown, the transformer assembly 300 includes a primary coil 310 and a first secondary coil 320 coupled to each other, the first secondary coil 320 is provided with a grounded center tap between the first and second ends thereof, the anode of the first diode 510 is connected to the first end of the first secondary coil 320, the anode of the second diode 520 is connected to the second end of the first secondary coil 320, the cathode of the first diode 510 is connected to the first end of the first inductor 630, the cathode of the second diode 520 is connected to the first end of the second inductor 640, the second end of the first inductor 630 is connected to the second end of the second inductor 640 to form a power output end, and the power output end is further connected to the load 800.

[0056] like Figure 4 As shown, based on Figure 3 In an embodiment, there may be multiple first diodes 510 and multiple second diodes 520, and the multiple first diodes 510 are connected in parallel, the positive poles of the first diodes 510 are connected to the first end of the first secondary coil 320, the negative poles of the first diodes 510 are connected to the first end of the first inductor 630, the positive poles of the second diodes 520 are connected to the second end of the first secondary coil 320, and the negative poles of the second diodes 520 are connected to the first end of the second inductor 640.

[0057] like Figure 5 As shown, the transformer assembly 300 includes a primary coil 310, a first secondary coil 320 and a second secondary coil 330 that are coupled to each other, the positive electrode of the first diode 510 is respectively connected to the first end of the first secondary coil 320 and the first end of the second secondary coil 330, the positive electrode of the second diode 520 is respectively connected to the second end of the first secondary coil 320 and the second end of the second secondary coil 330, the negative electrode of the first diode 510 is connected to the first end of the first inductor 630, the negative electrode of the second diode 520 is connected to the first end of the second inductor 640, the second end of the first inductor 630 is connected to the second end of the second inductor 640 to form a power output end, and the power output end is further connected to the load 800.

[0058] And in Fig. 9 , 10 In the embodiment, the first rectifier unit 410 is a full-bridge rectifier unit. Fig. 9 As shown, the transformer assembly 300 includes a primary coil 310 and a first secondary coil 320 coupled to each other, the first rectifier unit 410 also includes a third diode 530 and a fourth diode 540, the first end of the first secondary coil 320 is respectively connected to the positive electrode of the first diode 510 and the negative electrode of the third diode 530, the second end of the first secondary coil 320 is respectively connected to the positive electrode of the second diode 520 and the negative electrode of the fourth diode 540, the positive electrode of the third diode 530 and the positive electrode of the fourth diode 540 are both grounded, the negative electrode of the first diode 510 is connected to the first end of the first inductor 630, the negative electrode of the second diode 520 is connected to the first end of the second inductor 640, the second end of the first inductor 630 is connected to the second end of the second inductor 640 to form a power output end, and the power output end is then connected to the load 800.

[0059] like Fig.10As shown, the transformer assembly 300 includes a primary coil 310, a first secondary coil 320 and a second secondary coil 330 coupled to each other, the first rectifier unit 410 also includes a third diode 530 and a fourth diode 540, the first end of the first secondary coil 320 is respectively connected to the first end of the second secondary coil 330, the positive electrode of the first diode 510 and the negative electrode of the third diode 530, the second end of the first secondary coil 320 is respectively connected to the second end of the second secondary coil 330, the positive electrode of the second diode 520 and the negative electrode of the fourth diode 540, the positive electrode of the third diode 530 and the positive electrode of the fourth diode 540 are both grounded, the negative electrode of the first diode 510 is connected to the first end of the first inductor 630, the negative electrode of the second diode 520 is connected to the first end of the second inductor 640, the second end of the first inductor 630 is connected to the second end of the second inductor 640 to form a power output end, and the power output end is then connected to the load 800.

[0060] In some embodiments of the present invention, Figure 6 , 7 As shown in , 8, 11, 12, and 13, the rectifier module also includes a second rectifier unit 420, and there are two reactance components.

[0061] In some embodiments of the present invention, the first diode 510 and the second diode 520 are correspondingly connected to the first inductor 630 and the second inductor 640 in one of the reactance components, the second rectifier unit 420 includes at least a third diode 530 and a fourth diode 540, the output end of the third diode 530 is connected to the first end of the first inductor 630 in another of the reactance components, the output end of the fourth diode 540 is connected to the second end of the second inductor 640 in another of the reactance components, and the second end of the first inductor 630 in one of the reactance components is respectively connected to the second end of the second inductor 640 in one of the reactance components, the second end of the first inductor 630 in another of the reactance components, and the second end of the second inductor 640 in another of the reactance components to form the power supply output end.

[0062] Specifically, there are two reactance components, namely a first reactance component 610 and a second reactance component 620. Figure 6As shown, the first rectifier unit 410 and the second rectifier unit 420 are both full-wave rectifier units, the transformer component 300 includes a primary coil 310, a first secondary coil 320 and a second secondary coil 330 that are coupled to each other, the anode of the first diode 510 is connected to the first end of the first secondary coil 320, the anode of the second diode 520 is connected to the second end of the first secondary coil 320, the cathode of the first diode 510 is connected to the first end of the first inductor 630 of the first reactance component 610, the cathode of the second diode 520 is connected to the first end of the second inductor 640 of the first reactance component 610, the anode of the third diode 530 is connected to the second secondary coil 330, and the cathode of the third diode 530 is connected to the first end of the second inductor 640 of the first reactance component 610. 0, the anode of the fourth diode 540 is connected to the second end of the second secondary coil 330, the cathode of the third diode 530 is connected to the first end of the first inductor 630 of the second reactance component 620, the cathode of the fourth diode 540 is connected to the first end of the second inductor 640 of the second reactance component 620, the second end of the first inductor 630 of the first reactance component 610 is respectively connected to the second end of the second inductor 640 of the first reactance component 610, the second end of the first inductor 630 of the second reactance component 620 and the second end of the second inductor 640 of the second reactance component 620 to form a power output end, and the power output end is then connected to the load 800.

[0063] In some embodiments of the present invention, Fig.11As shown, the first rectifier unit 410 and the second rectifier unit 420 are both full-bridge rectifier units, the first rectifier unit 410 further includes a fifth diode 550 and a sixth diode 560, the second rectifier unit 420 further includes a seventh diode 570 and an eighth diode 580, the transformer component 300 includes a primary coil 310, a first secondary coil 320 and a second secondary coil 330 coupled to each other, the first end of the first secondary coil 320 is respectively connected to the positive electrode of the first diode 510 and the negative electrode of the fifth diode 550, the second end of the first secondary coil 320 is respectively connected to the positive electrode of the second diode 520 and the negative electrode of the sixth diode 560, the positive electrode of the fifth diode 550 and the positive electrode of the sixth diode 560 are both grounded, the negative electrode of the first diode 510 is connected to the first end of the first inductor 630 of the first reactance component 610, the negative electrode of the second diode 520 is connected to the second inductor 630 of the first reactance component 610, and the negative electrode of the second diode 520 is connected to the second inductor 630 of the first reactance component 610. The first end of the second secondary coil 330 is connected to the anode of the third diode 530 and the cathode of the seventh diode 570 respectively, the second end of the second secondary coil 330 is connected to the anode of the fourth diode 540 and the cathode of the eighth diode 580 respectively, the anodes of the seventh diode 570 and the eighth diode 580 are both grounded, the cathode of the third diode 530 is connected to the first end of the first inductor 630 of the second reactance component 620, the cathode of the fourth diode 540 is connected to the first end of the second inductor 640 of the second reactance component 620, the second end of the first inductor 630 of the first reactance component 610 is respectively connected to the second end of the second inductor 640 of the first reactance component 610, the second end of the first inductor 630 of the second reactance component 620 and the second end of the second inductor 640 of the second reactance component 620 to form a power output end, and the power output end is then connected to the load 800.

[0064] In some embodiments of the present invention, Figure 7 , 8 As shown in Figures 12 and 13, the rectifier module includes a first rectifier unit 410 and a second rectifier unit 420, the first diode 510 constitutes at least a part of the first rectifier unit 410, and the second diode 520 constitutes at least a part of the second rectifier unit 420, that is, some diodes in the first rectifier unit 410 are connected to the first inductor component 610, some diodes in the first rectifier unit 410 are connected to the second inductor component 620, some diodes in the second rectifier unit 420 are connected to the first inductor component 610, and some diodes in the second rectifier unit 420 are connected to the second inductor component 620.

[0065] For example, in some embodiments of the present invention, the distributed output rectification and filtering circuit also includes a transformer component 300, the transformer component 300 includes a primary coil 310, a first secondary coil 320 and a second secondary coil 330 coupled to each other, the first end of the primary coil 310, the first end of the first secondary coil 320 and the first end of the second secondary coil 330 are mutually connected, the first rectifier unit 410 also includes at least a third diode 530, the second rectifier unit 420 also includes at least a fourth diode 540, there are two reactance components, the first end of the first secondary coil 320 is connected to the input end of the first diode 510, the second end of the first secondary coil 320 is connected to the input end of the third diode 530, the first end of the second secondary coil 330 is connected to the input end of the second diode 520, and the first end of the second secondary coil 330 is connected to the input end of the second diode 520. The second end of the second secondary coil 330 is connected to the input end of the fourth diode 540, the output end of the first diode 510 is connected to the first end of the first inductor 630 in one of the reactance components, the output end of the third diode 530 is connected to the first end of the second inductor 640 in one of the reactance components, the output end of the second diode 520 is connected to the first end of the second inductor 640 in another reactance component, the output end of the fourth diode 540 is connected to the first end of the first inductor 630 in another reactance component, and the second end of the first inductor 630 in one of the reactance components is respectively connected to the second end of the second inductor 640 in one of the reactance components, the second end of the first inductor 630 in another reactance component, and the second end of the second inductor 640 in another reactance component to form the power supply output end.

[0066] Specifically, the first rectifying unit 410 and the second rectifying unit 420 may be full-wave rectifying units, such as Figure 7As shown, the first end of the first secondary coil 320 is connected to the anode of the first diode 510, the second end of the first secondary coil 320 is connected to the anode of the third diode 530, the first end of the second secondary coil 330 is connected to the anode of the second diode 520, the second end of the second secondary coil 330 is connected to the anode of the fourth diode 540, the cathode of the first diode 510 is connected to the first end of the first inductor 630 in the first reactance component 610, the cathode of the third diode 530 is connected to the anode of the second inductor 640 in the first reactance component 610 One end is connected, the cathode of the second diode 520 is connected to the first end of the second inductor 640 in the second reactance component 620, the cathode of the fourth diode 540 is connected to the first end of the first inductor 630 in the second reactance component 620, and the second end of the first inductor 630 in the first reactance component 610 is respectively connected to the second end of the second inductor 640 in the first reactance component 610, the second end of the first inductor 630 in the second reactance component 620, and the second end of the second inductor 640 in the second reactance component 620 to form a power supply output end.

[0067] In some embodiments of the present invention, Fig.12 As shown, the first rectifying unit 410 and the second rectifying unit 420 may be full-bridge rectifying units, the first rectifying unit 410 further includes a fifth diode 550 and a sixth diode 560 , and the second rectifying unit 420 further includes a seventh diode 570 and an eighth diode 580 .

[0068] The first end of the first secondary coil 320 is connected to the anode of the first diode 510 and the cathode of the fifth diode 550, respectively. The second end of the first secondary coil 320 is connected to the anode of the third diode 530 and the cathode of the sixth diode 560, respectively. The first end of the second secondary coil 330 is connected to the anode of the second diode 520 and the cathode of the seventh diode 570, respectively. The second end of the second secondary coil 330 is connected to the anode of the fourth diode 540 and the cathode of the eighth diode 580, respectively. The cathodes of the fifth diode 550, the sixth diode 560, the seventh diode 570 and the eighth diode 580 are all grounded. The cathode of the first diode 510 is connected to the cathode of the first diode 510. The first end of the first inductor 630 in the reactance component 610 is connected, the cathode of the third diode 530 is connected to the first end of the second inductor 640 in the first reactance component 610, the cathode of the second diode 520 is connected to the first end of the second inductor 640 in the second reactance component 620, the cathode of the fourth diode 540 is connected to the first end of the first inductor 630 in the second reactance component 620, and the second end of the first inductor 630 in the first reactance component 610 is respectively connected to the second end of the second inductor 640 in the first reactance component 610, the second end of the first inductor 630 in the second reactance component 620, and the second end of the second inductor 640 in the second reactance component 620 to form a power supply output end.

[0069] In some embodiments of the utility model, the distributed output rectification and filtering circuit also includes a transformer component 300, the transformer component 300 includes a primary coil 310, a first secondary coil 320 and a second secondary coil 330 coupled to each other, the first end of the primary coil 310, the first end of the first secondary coil 320 and the first end of the second secondary coil 330 are mutually connected, the first rectifier unit 410 also includes at least a third diode 530, the second rectifier unit 420 also includes at least a fourth diode 540, there are two reactance components, the first end of the first secondary coil 320 is connected to the input end of the first diode 510, the second end of the first secondary coil 320 is connected to the input end of the third diode 530, the first end of the second secondary coil 330 is connected to the input end of the second diode 520, and the second secondary The second end of the side coil 330 is connected to the input end of the fourth diode 540, the output end of the first diode 510 is connected to the first end of the first inductor 630 in one of the reactance components, the output end of the second diode 520 is connected to the first end of the second inductor 640 in one of the reactance components, the output end of the third diode 530 is connected to the first end of the first inductor 630 in another of the reactance components, the output end of the fourth diode 540 is connected to the first end of the second inductor 640 in another of the reactance components, and the second end of the first inductor 630 in one of the reactance components is respectively connected to the second end of the second inductor 640 in one of the reactance components, the second end of the first inductor 630 in another of the reactance components, and the second end of the second inductor 640 in another of the reactance components to form the power supply output end.

[0070] Specifically, the first rectifying unit 410 and the second rectifying unit 420 may be full-wave rectifying units, such as Figure 8As shown, the first end of the first secondary coil 320 is connected to the anode of the first diode 510, the second end of the first secondary coil 320 is connected to the anode of the third diode 530, the first end of the second secondary coil 330 is connected to the anode of the second diode 520, the second end of the second secondary coil 330 is connected to the anode of the fourth diode 540, the cathode of the first diode 510 is connected to the first end of the first inductor 630 in the first reactance component 610, the cathode of the second diode 520 is connected to the first end of the second inductor 640 in the first reactance component 610, and the cathode of the second diode 520 is connected to the first end of the second inductor 640 in the first reactance component 610. The output end of the third diode 530 is connected to the first end of the first inductor 630 in the second reactance component 620, the output end of the fourth diode 540 is connected to the first end of the second inductor 640 in the second reactance component 620, and the second end of the first inductor 630 in the first reactance component 610 is respectively connected to the second end of the second inductor 640 in the first reactance component 610, the second end of the first inductor 630 in the second reactance component 620, and the second end of the second inductor 640 in the second reactance component 620 to form a power supply output end.

[0071] In some embodiments of the present invention, Fig.13 As shown, the first rectifying unit 410 and the second rectifying unit 420 may be full-bridge rectifying units, the first rectifying unit 410 further includes a fifth diode 550 and a sixth diode 560 , and the second rectifying unit 420 further includes a seventh diode 570 and an eighth diode 580 .

[0072] The first end of the first secondary coil 320 is connected to the anode of the first diode 510 and the cathode of the fifth diode 550, respectively. The second end of the first secondary coil 320 is connected to the anode of the third diode 530 and the cathode of the sixth diode 560, respectively. The first end of the second secondary coil 330 is connected to the anode of the second diode 520 and the cathode of the seventh diode 570, respectively. The second end of the second secondary coil 330 is connected to the anode of the fourth diode 540 and the cathode of the eighth diode 580, respectively. The cathodes of the fifth diode 550, the sixth diode 560, the seventh diode 570 and the eighth diode 580 are all grounded. The cathode of the first diode 510 is connected to the cathode of the first diode 510. The first end of the first inductor 630 in the reactance component 610 is connected, the cathode of the second diode 520 is connected to the first end of the second inductor 640 in the first reactance component 610, the output end of the third diode 530 is connected to the first end of the first inductor 630 in the second reactance component 620, the output end of the fourth diode 540 is connected to the first end of the second inductor 640 in the second reactance component 620, and the second end of the first inductor 630 in the first reactance component 610 is respectively connected to the second end of the second inductor 640 in the first reactance component 610, the second end of the first inductor 630 in the second reactance component 620, and the second end of the second inductor 640 in the second reactance component 620 to form a power supply output end.

[0073] The welding machine according to the second embodiment of the utility model comprises a distributed output rectification and filtering circuit disclosed in any of the above embodiments, and the power output end is connected to the welding gun of the welding machine to provide welding power for the welding gun.

[0074] The welding machine of the utility model, specifically, can be a gas shielded welding machine, etc., which applies a distributed output rectifier filter circuit disclosed in any of the above embodiments to provide welding power for the welding gun, reduce the inductance capacity selected for the inductor element, greatly reduce the volume and weight of the reactor, save copper and iron materials, reduce costs, reduce the space occupied by components, save installation space, and improve the dynamic characteristics of the circuit.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A distributed output rectification and filtering circuit, characterized in that: include: A rectifier module, the rectifier module comprising at least a first diode and a second diode; At least one reactive component, the reactive component includes a first inductor and a second inductor, the output end of the first diode is connected to the first end of the first inductor, the output end of the second diode is connected to the first end of the second inductor, and the second end of the first inductor and the second end of the second inductor are connected to form a power supply output end.

2. A distributed output rectification and filtering circuit according to claim 1, characterized in that: The first inductor and the second inductor are coupled to each other, current can flow from the first end of the first inductor to the second end of the first inductor and from the first end of the second inductor to the second end of the second inductor, and the magnetic flux generated by the current flowing through the first inductor and the magnetic flux generated by the current flowing through the second inductor can offset each other.

3. A distributed output rectification and filtering circuit according to claim 2, characterized in that: The rectifier module at least includes a first rectifier unit, and the first diode and the second diode constitute at least a part of the first rectifier unit.

4. A distributed output rectification and filtering circuit according to claim 3, characterized in that: The rectifier module also includes a second rectifier unit. There are two reactance components. The first diode and the second diode are correspondingly connected to the first inductor and the second inductor in one of the reactance components. The second rectifier unit includes at least a third diode and a fourth diode. The output end of the third diode is connected to the first end of the first inductor in the other reactance component, and the output end of the fourth diode is connected to the second end of the second inductor in the other reactance component. The second end of the first inductor in one of the reactance components is respectively connected to the second end of the second inductor in one of the reactance components, the second end of the first inductor in the other reactance component, and the second end of the second inductor in the other reactance component to form the power supply output end.

5. A distributed output rectification and filtering circuit according to claim 2, characterized in that: The rectifier module includes a first rectifier unit and a second rectifier unit, the first diode constitutes at least a part of the first rectifier unit, and the second diode constitutes at least a part of the second rectifier unit.

6. A distributed output rectification and filtering circuit according to claim 5, characterized in that: It also includes a transformer component, the transformer component includes a primary coil, a first secondary coil and a second secondary coil coupled to each other, the first end of the primary coil, the first end of the first secondary coil and the first end of the second secondary coil are mutually connected, the first rectifier unit also includes at least a third diode, the second rectifier unit also includes at least a fourth diode, there are two reactance components, the first end of the first secondary coil is connected to the input end of the first diode, the second end of the first secondary coil is connected to the input end of the third diode, the first end of the second secondary coil is connected to the input end of the second diode, the second end of the second secondary coil is connected to the input end of the fourth diode. The output end of the first diode is connected to the first end of the first inductor in one of the reactance components, the output end of the third diode is connected to the first end of the second inductor in one of the reactance components, the output end of the second diode is connected to the first end of the second inductor in another of the reactance components, the output end of the fourth diode is connected to the first end of the first inductor in another of the reactance components, and the second end of the first inductor in one of the reactance components is respectively connected to the second end of the second inductor in one of the reactance components, the second end of the first inductor in another of the reactance components, and the second end of the second inductor in another of the reactance components to form the power supply output end.

7. A distributed output rectification and filtering circuit according to claim 5, characterized in that: It also includes a transformer component, the transformer component includes a primary coil, a first secondary coil and a second secondary coil coupled to each other, the first end of the primary coil, the first end of the first secondary coil and the first end of the second secondary coil are mutually connected, the first rectifier unit also includes at least a third diode, the second rectifier unit also includes at least a fourth diode, there are two reactance components, the first end of the first secondary coil is connected to the input end of the first diode, the second end of the first secondary coil is connected to the input end of the third diode, the first end of the second secondary coil is connected to the input end of the second diode, the second end of the second secondary coil is connected to the input end of the fourth diode. The output end of the first diode is connected to the first end of the first inductor in one of the reactance components, the output end of the second diode is connected to the first end of the second inductor in one of the reactance components, the output end of the third diode is connected to the first end of the first inductor in another of the reactance components, the output end of the fourth diode is connected to the first end of the second inductor in another of the reactance components, and the second end of the first inductor in one of the reactance components is respectively connected to the second end of the second inductor in one of the reactance components, the second end of the first inductor in another of the reactance components, and the second end of the second inductor in another of the reactance components to form the power supply output end.

8. A distributed output rectification and filtering circuit according to any one of claims 4 to 7, characterized in that: The first rectifier unit and the second rectifier unit are both full-bridge rectifier units.

9. A distributed output rectification and filtering circuit according to any one of claims 4 to 7, characterized in that: The first rectifying unit and the second rectifying unit are both full-wave rectifying units.

10. A welding machine, characterized in that: It comprises a distributed output rectification and filtering circuit as described in any one of claims 1 to 9, wherein the power output end is connected to a welding gun of a welding machine to provide welding power for the welding gun.

Images