CN113793747B - Leakage inductance control device and control method of LLC transformer - Google Patents
Leakage inductance control device and control method of LLC transformer Download PDFInfo
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- CN113793747B CN113793747B CN202110987996.XA CN202110987996A CN113793747B CN 113793747 B CN113793747 B CN 113793747B CN 202110987996 A CN202110987996 A CN 202110987996A CN 113793747 B CN113793747 B CN 113793747B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model relates to a leakage inductance control device of LLC transformer and control method, relate to the field of power integrated transformer, leakage inductance control device of LLC transformer includes line frame, first winding and second winding, the line frame is provided with and passes place the chamber of first winding and second winding, place the one end in chamber and be the opening setting, place the intracavity and inserted first magnetic element, the line frame is close to place the both sides wall of the closed tip in chamber and all be provided with the through-hole, elastic connection has the grafting piece in the through-hole, the both sides wall of first magnetic element all is provided with the spliced eye, the grafting piece peg graft in the spliced eye; the second magnetic unit is covered above the wire frame, grooves are formed in two ends of the second magnetic unit, and the grooves are covered outside the first magnetic unit. This application has the effect of being convenient for install first magnetic element and second magnetic element, guarantees the normal clear of leakage inductance control work.
Description
Technical Field
The application relates to the field of power supply integrated transformers, in particular to a leakage inductance control device and a leakage inductance control method of an LLC transformer.
Background
At present, the LLC resonant converter is used as a high-efficiency and high-power density power supply and has been widely applied to products such as military power supplies, communication power supplies, liquid crystal television power supplies, advertisement screen high-power supplies, LED power supplies, electric vehicle charging power supplies and the like. The LLC resonant transformer is used as a core device in the LLC resonant converter and is important to the efficiency, the power density, the reliability and the like of a circuit.
The present chinese patent with application No. cn200610073561.X proposes a high voltage transformer for controlling leakage inductance, which is used in a multi-lamp driving system, and includes: at least one wire frame, a first winding, a second winding, a first magnetic unit and a second magnetic unit; the first winding and the second winding are respectively correspondingly wound on the first section and the second section of the wire frame, the second magnetic unit covers the side end of the wire frame, and a transverse beam is extended at a proper position of the bottom end and is transversely arranged between the first section and the second section; in the above configuration, the insertion portion is inserted through the diaphragm extending from the second magnetic unit, so that the low-voltage magnetic path and the alternating-voltage magnetic path, which are generated by the influence of the first winding and the second winding, of the first magnetic unit are completely separated.
In view of the above-mentioned related art, the inventor believes that when the first magnetic unit is inserted into the accommodating space, the first magnetic unit is not fixed, and there is a defect that the connection between the first magnetic unit and the wire frame is unstable.
Disclosure of Invention
In order to solve the problem that the connection between the first magnetic unit and the wire frame is unstable, the application provides a leakage inductance control device and a leakage inductance control method of an LLC transformer.
The leakage inductance control device of the LLC transformer adopts the following technical scheme:
the leakage inductance control device comprises a wire frame, a first winding and a second winding, wherein the wire frame is provided with a placement cavity penetrating through the first winding and the second winding, one end of the placement cavity is provided with an opening, a first magnetic unit is inserted into the placement cavity, two side walls, close to the closed end part of the placement cavity, of the wire frame are respectively provided with a through hole, plug blocks are elastically connected in the through holes, and two side walls of the first magnetic unit are respectively provided with a plug hole, and the plug blocks are plugged in the plug holes; the second magnetic unit is covered above the wire frame, grooves are formed in two ends of the second magnetic unit, and the grooves are covered outside the first magnetic unit.
Through adopting above-mentioned technical scheme, place first winding in placing the intracavity, after the spliced eye moved to the through-hole position, the spliced eye was pegged graft in the spliced eye, realized the restriction effect to first magnetic element along placing chamber length direction motion, under the effect of line frame and second magnetic element simultaneously, accomplished the firm effect to first magnetic element.
Optionally, the equal fixedly connected with stopper of grafting piece both sides wall, the both sides wall of through-hole all is provided with and is used for stopper gliding spacing groove, the both ends in spacing groove are closed setting.
Through adopting above-mentioned technical scheme, when the plug-in block moves in the through-hole, the stopper moves in the spacing inslot, under the restriction effect of stopper and spacing groove, accomplishes the restriction effect to plug-in block direction of motion.
Optionally, the spacing groove is close to the one end inner wall fixedly connected with first spring of spliced eye, the other end of first spring with stopper lateral wall fixed connection, first spring extending direction is along the length direction of spacing groove.
Through adopting above-mentioned technical scheme, when first spring is in the original form state, the grafting piece tip that is close to the spliced eye is located the through-hole opening part and does not interfere the motion of first magnetic element, and the other end of grafting piece is located outside the through-hole this moment, is convenient for drive the grafting piece.
Optionally, the grafting piece keep away from in the one end fixedly connected with sloping block of spliced eye, the inclined plane of sloping block is along orientation second magnetic element direction sets up, the recess lateral wall with the inclined plane butt of sloping block and drive the grafting piece motion.
Through adopting above-mentioned technical scheme, when the second magnetic element moves to with sloping block butt, the sloping block receives the effort towards the spliced eye direction, and the spliced eye is driven to in the spliced eye, and the second spring is extruded and is warp this moment.
Optionally, the wire frame is provided with the slide hole, the second magnetic unit is close to the lateral wall of recess is provided with the fixed orifices, be provided with the dead lever in the slide hole, the dead lever peg graft in the fixed orifices.
Through adopting above-mentioned technical scheme, the dead lever slides in the sliding hole, and peg graft in the fixed orifices, realizes the fixed effect of line frame and second magnetic unit.
Optionally, the dead lever both sides all articulate there is the shell fragment, shell fragment fixedly connected with first rack, fixed orifices inner wall fixedly connected with slope sets up the second rack, first rack with the second rack interlock, the dead lever with be provided with the piece that resets between the shell fragment.
Through adopting above-mentioned technical scheme, after the dead lever is pegged graft in the fixed orifices, under the effect of restoring to the throne the piece, first rack and second rack interlock realize the locking effect to the dead lever.
Optionally, the restoring element is set to the second spring, the second spring is the level setting, the both ends of second spring respectively with shell fragment and dead lever outer wall fixed connection.
By adopting the technical scheme, under the elastic force of the second spring, the elastic piece drives the first rack to swing to be meshed with the second rack.
Optionally, a thread groove is formed in a portion, located outside the sliding hole, of the fixing rod, a nut is connected to the fixing rod in a threaded mode at the position of the thread groove, and the nut is abutted to the side wall of the wire frame.
Through adopting above-mentioned technical scheme, with nut and thread groove threaded connection, when the nut rotated to the position with the line frame butt, accomplish the locking effect to the dead lever.
Optionally, the surface of the first magnetic unit is provided with an alignment groove, the side wall of the placing cavity is provided with a marking groove, and the central line of the marking groove and the plane where the central axis of the through hole is located are arranged in a coplanar mode.
Through adopting above-mentioned technical scheme, when alignment groove motion to sign groove position, realize fixing a position first magnetic unit mounted position, promote the installation effectiveness to first magnetic unit.
The leakage inductance control method of the LLC transformer adopts the following technical scheme:
a leakage inductance control method of an LLC transformer comprises the following steps:
s1, installing a first magnetic unit, and installing the first magnetic unit in a placing cavity to ensure that an alignment groove and a marking groove are coplanar;
s2, installing a second magnetic unit, covering a groove of the second magnetic unit at the end part of the first magnetic unit, and simultaneously inserting an inserting block into the inserting hole to fix the first magnetic unit;
s3, fixing a second magnetic unit, inserting a fixing rod into the fixing hole, and enabling the first rack to be meshed with the second rack;
s4, controlling leakage inductance, wherein a diaphragm beam is arranged on the second magnetic unit, the first winding inputs voltage, the same end of the first magnetic unit is positioned in the low-voltage coil, the other end of the first magnetic unit is positioned in the high-voltage coil, the second winding generates induced electromotive force, the first magnetic unit and the second magnetic unit positioned at the low-voltage coil form a magnetic force line, the first magnetic unit and the second magnetic unit positioned at the high-voltage coil also form another magnetic force line, the first winding and the second winding are respectively and independently formed with magnetic force lines, and the leakage inductance control is completed under the control action of the diaphragm beam.
By adopting the technical scheme, the first magnetic unit is arranged in the placing cavity, so that the alignment groove and the identification groove are coplanar; covering the groove of the second magnetic unit at the end part of the first magnetic unit, abutting the side wall of the groove with the inclined surface of the inclined block, enabling the inclined block and the plug block to receive acting force towards the direction of the plug hole, enabling the plug block to be plugged in the plug taste, fixing the first magnetic unit, enabling the limiting block to move in the limiting groove, and enabling the first spring to be compressed; the fixing rod is inserted into the fixing hole, the first rack is meshed with the second rack under the matching action of the elastic sheet and the second spring, and the driving nut is in threaded connection with the fixing rod and is abutted with the wire frame; the second magnetic unit is provided with a diaphragm, the first winding inputs voltage, the same end of the first magnetic unit is positioned in the low-voltage coil, and the other end of the first magnetic unit is positioned in the high-voltage coil, but the two ends are separated; when the first winding is electrified, the second winding generates induced electromotive force, so that the first magnetic unit and the second magnetic unit at the low-voltage coil form one magnetic force line, and the first magnetic unit and the second magnetic unit at the high-voltage coil form the other magnetic force line, so that the first winding and the second winding are respectively and independently formed with magnetic force lines on one group of magnetic units, and the low-voltage arrowhead passage and the alternating high-voltage magnetic passage are completely separated through the diaphragm, thereby completing the control of leakage inductance.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first winding is placed in the placement cavity, and after the plug hole moves to the through hole position, the plug block is plugged in the plug hole, so that the limiting effect on the movement of the first magnetic unit along the length direction of the placement cavity is realized, and meanwhile, the stabilizing effect on the first magnetic unit is finished under the action of the wire frame and the second magnetic unit;
2. after the fixed rod moves into the fixed hole, under the elastic force action of the second spring to restore the original shape, the elastic sheet is driven to move towards the direction of the second rack, the size of the end face of the gear tooth of the first rack is smaller than the size of the interval between the gear teeth of the second rack, the first rack is ensured to swing to a position engaged with the second rack, and the locking effect of the fixed rod along the direction of the through hole is realized.
Drawings
FIG. 1 is a schematic overall structure of a first embodiment of the present application;
FIG. 2 is a schematic diagram of a partial structure of an embodiment of the present application;
FIG. 3 is a schematic view of a portion of a first magnetic unit, a second magnetic unit, a plug block, a stopper, and a first spring according to a first embodiment of the present disclosure;
fig. 4 is an enlarged view at a in fig. 3;
FIG. 5 is a schematic view of a portion of a second magnetic unit, a fixed rod, a spring plate, a second spring, a first rack and a second rack in a first embodiment of the present application;
FIG. 6 is an enlarged view at B in FIG. 5;
fig. 7 is a flowchart of a second embodiment of the present application.
Reference numerals: 1. a wire frame; 2. a first winding; 3. a second winding; 4. a placement cavity; 5. a first magnetic unit; 6. a second magnetic unit; 7. a through hole; 8. a plug block; 9. a plug hole; 10. a groove; 11. a limiting block; 12. a limit groove; 13. a first spring; 14. a sloping block; 15. a slide hole; 16. a fixing hole; 17. a fixed rod; 18. a spring plate; 19. a first rack; 20. a second rack; 21. a second spring; 22. an alignment groove; 23. a marking groove; 24. a screw cap; 25. and a diaphragm beam.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
Example 1
The embodiment of the application discloses a leakage inductance control device of an LLC transformer. Referring to fig. 1 and 2, a leakage inductance control device of an LLC transformer includes a bobbin 1, a first winding 2 and a second winding 3, the bobbin 1 is provided with a placement cavity 4 for passing through the first winding 2 and the second winding 3, the bobbin 1 is provided with a placement cavity 4 passing through the first winding 2 and the second winding 3, one end of the placement cavity 4 is provided with an opening, a first magnetic unit 5 is inserted into the placement cavity 4, through holes 7 are respectively arranged on two sides of the bobbin 1 close to the closed end of the placement cavity 4, plug-in blocks 8 are elastically arranged in the through holes 7, and plug-in holes 9 are respectively arranged on two side walls of the first magnetic unit 5;
referring to fig. 1 and 2, in order to ensure that the position of the plugging hole 9 and the position of the through hole 7 move to the communicating position, an alignment groove 22 is arranged above the first magnetic unit 5, a marking groove 23 is arranged on the side wall of the placing cavity 4, the central line of the marking groove 23 and the plane where the central axis of the through hole 7 is located are arranged in a coplanar manner, the openings of the alignment groove 22 and the marking groove 23 are rectangular, and when the position of the alignment groove 22 moves to the position coplanar with the marking groove 23, the plugging hole 9 moves to the position coaxial with the through hole 7.
Referring to fig. 1 and 3, a second magnetic unit 6 is covered above the wire frame 1, grooves 10 are formed at two ends of the second magnetic unit 6, the bottom end of the groove 10, which faces the wire frame 1, is provided with an opening, so that the second magnetic unit 6 is covered outside the wire frame 1, notches are formed at positions, corresponding to the grooves 10 of the second magnetic unit 6, of the wire frame 1, and are used for placing side walls of the grooves 10; the second magnetic unit 6 is fixedly connected with a diaphragm beam 25, and the diaphragm beam 25 is used for controlling leakage inductance.
Referring to fig. 3 and 4, in order to realize the driving effect of the second magnetic unit 6 on the plug block 8, the through hole 7 is an opening, two side walls of the plug block 8 are fixedly connected with limiting blocks 11, two side walls of the through hole 7 are provided with limiting grooves 12 for limiting the sliding of the limiting blocks 11, two ends of the limiting grooves 12 are closed, the length direction of the limiting grooves 12 is along the length direction of the through hole 7, the limiting grooves 12 are fixedly connected with first springs 13 near one end inner wall of the plug hole 9, the other ends of the first springs 13 are fixedly connected with the side walls of the limiting blocks 11, the extending direction of the first springs 13 is along the length direction of the limiting grooves 12, when the first springs 13 are in a original state, one end, close to the plug block 8, of the plug hole 9 is the opening of the through hole 7, and the other end of the plug block 8 is located outside the corresponding end of the through hole 7.
The one end fixedly connected with sloping block 14 that spliced block 8 kept away from spliced eye 9, the inclined plane of sloping block 14 takes place the slope along the inclined plane butt towards second magnetic unit 6 direction, recess 10 lateral wall and sloping block 14, the horizontal effort towards spliced eye 9 direction is applyed to sloping block 14 to the recess 10 lateral wall, spliced block 8 is driven to move to spliced eye 9 in, realize the drive of second magnetic unit 6 to spliced block 8, simultaneously spliced block 8 and spliced eye 9's cooperation effect down, accomplish the locking effect to first magnetic unit 5.
Referring to fig. 5 and 6, in order to secure the fixing effect of the wire frame 1 and the second magnetic unit 6, the wire frame 1 is provided with a sliding hole 15, the sliding hole 15 is perpendicular to the direction of the through hole 7, the second magnetic unit 6 is provided with a fixing hole 16 near the side wall of the groove 10, a fixing rod 17 is slidably connected in the sliding hole 15, the fixing rod 17 is inserted into the fixing hole 16, the two sides of the fixed rod 17 are hinged with elastic pieces 18, the elastic pieces 18 and the fixed rod 17 rotate through a hinge shaft, the axis direction of the hinge shaft is horizontal and perpendicular to the moving direction of the fixed rod 17, the side wall of the elastic piece 18 far away from the fixed rod 17 is fixedly connected with a first rack 19, and the inner wall of the fixed hole 16 is fixedly connected with a second rack 20 which is obliquely arranged;
a reset piece is arranged between the fixed rod 17 and the elastic piece 18, the reset piece is arranged as a second spring 21, the second spring 21 is horizontally arranged, two ends of the second spring 21 are fixedly connected with the elastic piece 18 and the outer wall of the fixed rod 17 respectively, when the fixed rod 17 slides in the through hole 7, the elastic piece 18 is extruded and deformed, the aperture size of the fixed hole 16 is larger than that of the through hole 7, after the fixed rod 17 moves into the fixed hole 16, under the elastic force of the second spring 21, the elastic piece 18 is driven to move towards the second rack 20, the gear tooth end face size of the first rack 19 is smaller than the interval size between the gear teeth of the second rack 20, the first rack 19 is ensured to swing to a position engaged with the second rack 20, and the locking effect of the fixed rod 17 along the direction of the through hole 7 is realized.
The part of dead lever 17 that is located the slide hole 15 is provided with the screw thread groove, and dead lever 17 is in screw thread groove threaded connection there is nut 24, and nut 24 and dead lever 17 threaded connection just move along the length direction of dead lever 17, and nut 24 moves to the position with the line frame 1 butt, realizes the reinforcement locking effect to dead lever 17, stabilizes the fixed effect to second magnetic unit 6 simultaneously.
The implementation principle of the leakage inductance control device of the LLC transformer is as follows: after the alignment groove 22 of the first magnetic unit 5 is aligned with the identification groove 23, the groove 10 of the second magnetic unit 6 is covered on the first magnetic unit 5 to move, the inner wall of the groove 10 extrudes the inclined block 14, the inclined block 14 is driven to move towards the direction of the inserting hole 9, the limiting block 11 moves in the limiting groove 12, the first spring 13 is compressed and deformed, the inserting block 8 is inserted into the inserting hole 9 at the moment, and the fixing effect of the first magnetic unit 5 is completed;
the driving fixed rod 17 slides in the sliding hole 15, the second spring 21 is extruded and deformed, after the fixed rod 17 moves into the fixed hole 16, the first rack 19 is meshed with the second rack 20 under the elastic force of the second spring 21, and the driving nut 24 is in threaded connection with the fixed rod 17, so that the locking effect on the fixed rod 17 is achieved.
Example two
The embodiment of the application also discloses a leakage inductance control method of the LLC transformer, referring to FIG. 7, comprising the following steps:
s1, installing a first magnetic unit 5, and installing the first magnetic unit 5 in the placement cavity 4 to ensure that the alignment groove 22 and the identification groove 23 are coplanar;
s2, installing a second magnetic unit 6, covering a groove 10 of the second magnetic unit 6 at the end part of the first magnetic unit 5, abutting the side wall of the groove 10 with the inclined surface of an inclined block 14, enabling the inclined block 14 and the plug block 8 to receive acting force towards the direction of the plug hole 9, enabling the plug block 8 to be plugged into the plug taste, fixing the first magnetic unit 5, enabling a limiting block 11 to move in a limiting groove 12, and enabling a first spring 13 to be compressed;
s3, fixing the second magnetic unit 6, inserting the fixing rod 17 into the fixing hole 16, and under the cooperation of the elastic sheet 18 and the second spring 21, engaging the first rack 19 with the second rack 20, and connecting the driving nut 24 with the fixing rod 17 in a threaded manner and abutting against the wire frame 1;
s4, controlling leakage inductance, wherein a diaphragm beam 25 is arranged on the second magnetic unit 6, the voltage is input to the first winding 2, the same end of the first magnetic unit 5 is positioned in the low-voltage coil, and the other end of the first magnetic unit 5 is positioned in the high-voltage coil, but the two ends are separated; when the first winding 2 is electrified, the second winding 3 generates induced electromotive force, so that the first magnetic unit 5 and the second magnetic unit 6 at the low-voltage coil form a magnetic force line, and the first magnetic unit 5 and the second magnetic unit 6 at the high-voltage coil form another magnetic force line, so that the first winding 2 and the second winding 3 respectively and independently form magnetic force lines on a group of magnetic units, and the low-voltage arrowhead passage and the alternating high-voltage magnetic flux passage are completely separated through the diaphragm beam 25, thereby completing leakage inductance control.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. The leakage inductance control device of an LLC transformer is characterized in that: the coil holder (1) is provided with a placement cavity (4) penetrating through the first winding (2) and the second winding (3), one end of the placement cavity (4) is provided with an opening, a first magnetic unit (5) is inserted into the placement cavity (4), through holes (7) are formed in two side walls, close to the closed end of the placement cavity (4), of the coil holder (1), plug-in blocks (8) are elastically connected in the through holes (7), plug-in holes (9) are formed in two side walls of the first magnetic unit (5), and the plug-in blocks (8) are plugged in the plug-in holes (9); the utility model discloses a cable holder, including frame (1), second magnetic unit (6) both ends all are provided with recess (10), recess (10) cover is located outside first magnetic unit (5), grafting piece (8) both sides wall all fixedly connected with stopper (11), the both sides wall of through-hole (7) all is provided with and is used for stopper (11) gliding spacing groove (12), the both ends of spacing groove (12) are closed setting, spacing groove (12) are close to the one end inner wall fixedly connected with first spring (13) of spliced eye (9), the other end of first spring (13) with stopper (11) lateral wall fixed connection, first spring (13) extending direction is followed the length direction of spacing groove (12), grafting piece (8) keep away from in the one end fixedly connected with sloping block (14) of spliced eye (9), the inclined plane of sloping block (14) is along orientation second magnetic unit (6) one end inner wall fixedly connected with first spring (13) and sloping block (14) are located along the inclined plane of second magnetic unit (6) lateral wall (10) and drive inclined plane.
2. The leakage inductance control device of an LLC transformer in accordance with claim 1, wherein: the wire frame (1) is provided with a sliding hole (15), the side wall, close to the groove (10), of the second magnetic unit (6) is provided with a fixing hole (16), a fixing rod (17) is arranged in the sliding hole (15), and the fixing rod (17) is inserted into the fixing hole (16).
3. The leakage inductance control device of an LLC transformer in accordance with claim 2, wherein: the utility model discloses a fixed lever, including fixed lever (17), shell fragment (18) are all articulated to both sides of fixed lever (17), shell fragment (18) fixedly connected with first rack (19), fixed orifices (16) inner wall fixedly connected with second rack (20) that the slope set up, first rack (19) with second rack (20) interlock, fixed lever (17) with be provided with the piece that resets between shell fragment (18).
4. A leakage inductance control device of an LLC transformer according to claim 3, wherein: the reset piece is arranged to be a second spring (21), the second spring (21) is horizontally arranged, and two ends of the second spring (21) are fixedly connected with the elastic piece (18) and the outer wall of the fixed rod (17) respectively.
5. The leakage inductance control device of an LLC transformer in accordance with claim 4, wherein: the part of the fixed rod (17) positioned outside the sliding hole (15) is provided with a thread groove, the fixed rod (17) is in threaded connection with a nut (24) at the position of the thread groove, and the nut (24) is abutted to the side wall of the wire frame (1).
6. The leakage inductance control device of an LLC transformer in accordance with claim 5, wherein: the surface of the first magnetic unit (5) is provided with an alignment groove (22), the side wall of the placement cavity (4) is provided with a marking groove (23), and the central line of the marking groove (23) and the plane where the central axis of the through hole (7) is located are arranged in a coplanar mode.
7. A leakage inductance control method of an LLC transformer based on the leakage inductance control device of an LLC transformer as claimed in claim 6, wherein: the method comprises the following steps:
s1, installing a first magnetic unit (5), and installing the first magnetic unit (5) in a placing cavity (4) to ensure that an alignment groove (22) and a marking groove (23) are coplanar;
s2, installing a second magnetic unit (6), covering a groove (10) of the second magnetic unit (6) at the end part of the first magnetic unit (5), and simultaneously inserting an inserting block (8) into an inserting hole (9) to fix the first magnetic unit (5);
s3, fixing the second magnetic unit (6), inserting the fixing rod (17) into the fixing hole (16), and enabling the first rack (19) to be meshed with the second rack (20);
s4, leakage inductance is controlled, a diaphragm (25) is arranged on the second magnetic unit (6), voltage is input to the first winding (2), the same end of the first magnetic unit (5) is located in the low-voltage coil, the other end of the first magnetic unit is located in the high-voltage coil, induced electromotive force is generated by the second winding (3), so that the first magnetic unit (5) and the second magnetic unit (6) located at the low-voltage coil form a magnetic force line, the first magnetic unit (5) and the second magnetic unit (6) located at the high-voltage coil also form another magnetic force line, the first winding (2) and the second winding (3) are respectively and independently formed with magnetic force lines, and leakage inductance control is completed under the control action of the diaphragm (25).
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| CN202110987996.XA CN113793747B (en) | 2021-08-26 | 2021-08-26 | Leakage inductance control device and control method of LLC transformer |
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| CN202110987996.XA CN113793747B (en) | 2021-08-26 | 2021-08-26 | Leakage inductance control device and control method of LLC transformer |
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| CN113793747B true CN113793747B (en) | 2023-07-18 |
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| CN112420346A (en) * | 2020-09-25 | 2021-02-26 | 芜湖腾飞信息科技有限公司 | Transformer core convenient to concatenation installation |
| CN112768214A (en) * | 2020-12-24 | 2021-05-07 | 江金北(北京)自动化技术有限公司 | Small-size current transformer iron core structure for protection |
| CN213150535U (en) * | 2020-10-30 | 2021-05-07 | 重庆宗申电器有限公司 | Universal gasoline engine igniter capable of preventing iron core from loosening |
| CN214012705U (en) * | 2021-01-15 | 2021-08-20 | 深圳市超至威电子有限公司 | ET type inductance transformer |
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2021
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| CN213150535U (en) * | 2020-10-30 | 2021-05-07 | 重庆宗申电器有限公司 | Universal gasoline engine igniter capable of preventing iron core from loosening |
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| CN214012705U (en) * | 2021-01-15 | 2021-08-20 | 深圳市超至威电子有限公司 | ET type inductance transformer |
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| CN113793747A (en) | 2021-12-14 |
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