CN117767507A - wireless charger with overheat protection - Google Patents
wireless charger with overheat protection Download PDFInfo
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- CN117767507A CN117767507A CN202410190927.XA CN202410190927A CN117767507A CN 117767507 A CN117767507 A CN 117767507A CN 202410190927 A CN202410190927 A CN 202410190927A CN 117767507 A CN117767507 A CN 117767507A
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 50
- 229910052742 iron Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 230000005669 field effect Effects 0.000 claims description 19
- 230000003028 elevating effect Effects 0.000 claims description 5
- 206010020649 Hyperkeratosis Diseases 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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Abstract
The invention discloses a wireless charger with overheat protection, which belongs to the technical field of wireless chargers and comprises a base, wherein the upper end of the base is provided with a lifting mechanism in a penetrating way, the upper end of the lifting mechanism is rotationally connected with a rotating table, the upper surface of the rotating table is fixedly connected with a rotating seat, the rotating seat is fixedly connected with a mobile phone fixing frame, a temperature control mechanism is fixedly connected in the mobile phone fixing frame, the upper surface of the base is provided with a circular groove, a locking structure is arranged in the circular groove, the lower end of the base is fixedly connected with a plurality of foot pads, the base is fixedly connected with a display screen, and an elastic contact is fixedly connected in the circular groove. According to the invention, through the lifting mechanism and the temperature control mechanism, the wireless charging coil can be powered off when the wireless charger is overheated, so that the damage of electronic elements of the wireless charger caused by overheating is avoided.
Description
Technical Field
The invention belongs to the technical field of wireless chargers, and particularly relates to a wireless charger with overheat protection.
Background
A wireless charger for a mobile phone is a device capable of charging the mobile phone in a wireless manner. Typically, a wireless charger for a cell phone consists of a charging coil and an adapter for connecting to a power source. When the mobile phone wireless charger is used, a user only needs to place the mobile phone on the charging coil, and the charging coil can send electric energy to the mobile phone through an electromagnetic induction technology, so that wireless charging is realized. The traditional connection of charging wire has been saved to this kind of mode for it is more convenient and clean and tidy to charge.
In the process of charging, as the electromagnetic induction coil has certain energy loss in the process of transmitting electric energy, a part of electric energy is converted into heat energy, so that the wireless charger self heats, the electronic elements in the wireless charger and the mobile phone are damaged due to the excessively high temperature, and the existing wireless charger cannot be subjected to overheat protection, so that the wireless charger has certain danger.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a wireless charger with overheat protection.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a wireless charger with overheat protection, includes the base, the upper end of base is run through and is provided with elevating system, elevating system's upper end is rotated and is connected with the rolling table, the last fixedly connected with of rolling table rotates the seat, fixedly connected with cell-phone mount on the rolling seat, fixedly connected with temperature control mechanism in the cell-phone mount, circular recess has been seted up to the upper surface of base, be provided with locking structure in the circular recess, the lower extreme fixedly connected with of base a plurality of callus on the sole, fixedly connected with display screen on the base, fixedly connected with elastic contact in the circular recess.
Through above-mentioned technical scheme, make wireless charger can be with wireless charging coil outage when overheated, avoid overheated wireless charger electronic component that causes to damage, through the use of cell-phone mount and rolling table simultaneously, can make wireless charger act as the cell phone stand of multi-angle regulation, convenience of customers uses.
further, elevating system is including running through the lifter of sliding connection on the base, the upper end fixedly connected with lifter plate of lifter, fixedly connected with fixed disk on the lifter plate, fixedly connected with a pair of roof in the base, the equal fixedly connected with in both ends of roof a pair of first spring, the one end fixedly connected with fixed plate of roof is kept away from to first spring, the lower extreme fixedly connected with magnetic core of fixed plate.
through above-mentioned technical scheme, can make the fixed disc rise under the promotion of first spring when overheated, make the disconnection between elastic contact and the contact to make wireless charging coil outage, avoid overheated.
Further, fixedly connected with dead lever in the base, fixedly connected with solenoid on the dead lever, run through sliding connection magnetic core in the solenoid, the upper surface and the lifter fixed connection of fixed plate, the upper surface rotation of fixed disc is connected with the rolling table, the lower surface fixedly connected with contact of fixed disc, elastic contact and contact electric connection.
Through above-mentioned technical scheme, can make solenoid circular telegram, drive the magnetic core and move down to make the fixed plate drive the lifter plate through the lifter and move down, make the fixed disc get back to in the circular recess, make elastic contact and contact again, and make the pothook blocked by the voussoir, recharge.
Further, the rotating seat comprises a rotating frame fixed on the upper surface of the rotating table, the two ends in the rotating frame are fixedly connected with first limiting plates, an inner pipe is fixedly connected to the first limiting plates in a penetrating mode, threading holes are formed in the lower side of the inner pipe, the two ends of the rotating frame are fixedly connected with second springs, one end of each second spring, far away from the first limiting plates, of each second spring is fixedly connected with a movable plate, a plurality of second ratchets are fixedly connected to the movable plates, a pair of rotating blocks are fixedly connected to the lower surface of the mobile phone fixing frame, limiting pipes are fixedly connected to the inner sides of the rotating blocks, a plurality of first ratchets are fixedly connected to the outer sides of the limiting pipes, the first ratchets are matched with the second ratchets in a meshed mode, and the limiting pipes are matched with the inner pipes in a mutually rotating mode.
Through above-mentioned technical scheme, when needing to adjust the cell-phone angle, through rotating the backup pad, first ratchet pushes away the second ratchet this moment, makes relative rotation between rotor block and the rotating turret, later second spring promotes the fly leaf, makes second ratchet and first ratchet intermeshing to lock, avoid the backup pad to rotate at will.
Further, the cell-phone mount is including fixing the backup pad on the rotating block, the both sides of backup pad are all rotated and are connected with a pair of connecting rod, the one end that the backup pad was kept away from to the connecting rod rotates and is connected with fixed frame, the breach has been seted up to the lower extreme of fixed frame, the lower extreme fixedly connected with of backup pad is a pair of first location magnet, the lower extreme fixedly connected with of fixed frame is a pair of second location magnet, first location magnet and second location magnet are the homopolar looks and inhale the setting, the upper surface fixedly connected with wireless charging coil of backup pad.
through above-mentioned technical scheme, can detain the fixed frame through the breach and open, make fixed frame break away from the attraction of first location magnet and second location magnet fixed, insert the cell-phone between fixed frame and the backup pad, and when fixed frame is folding, fix through first location magnet and the mutual actuation of second location magnet.
Further, the locking structure includes the first recess of seting up in circular recess bottom, the second recess has been seted up to one side of first recess, fixedly connected with second limiting plate in the second recess, the one end fixedly connected with first electro-magnet of first recess is kept away from to the second recess, run through sliding connection has the slide bar on the second limiting plate, the one end fixedly connected with iron plate that the slide bar is close to first electro-magnet, the one end fixedly connected with voussoir that the iron plate was kept away from to the slide bar, be provided with the third spring between voussoir and the second limiting plate, the lower extreme fixedly connected with pothook of fixed disk, pothook and voussoir mutual block cooperation.
Through above-mentioned technical scheme, the pothook inserts first recess, and the pothook pushes away the voussoir earlier, and afterwards the voussoir is bounced back under the promotion of third spring, blocks the pothook, and it can make first electro-magnet circular telegram to detect the high temperature when control by temperature change mechanism, attracts the iron plate to drive the voussoir through the slide bar and withdraw, release the pothook, make fixed disc rise under the promotion of first spring.
Further, the temperature control mechanism comprises a mounting plate fixed in the supporting plate, a field effect tube is fixedly connected to the mounting plate, a grid electrode, a drain electrode and a source electrode are respectively arranged on the field effect tube, a first electric wire is fixedly connected to the grid electrode, one end of the first electric wire, which is far away from the grid electrode, is fixedly connected with a fixed value resistor, one end of the fixed value resistor, which is far away from the first electric wire, is fixedly connected with a second electric wire, one end of the second electric wire, which is far away from the second electric wire, is fixedly connected with a third electric wire, the third electric wire is fixedly connected with the drain electrode, a fourth electric wire is fixedly connected to the grid electrode, one end of the fourth electric wire, which is far away from the grid electrode, is fixedly connected with a thermistor, a fourth spring is fixedly connected to the lower end of the mounting plate, one end of the fourth spring, which is far away from the mounting plate, is fixedly connected with a iron sheet, the lower end of the mounting plate is fixedly connected with a first metal plate and a second metal plate, the first metal plate, the second metal plate and the first metal plate are electrically connected to the source electrode.
through the technical scheme, when the thermistor is heated, the resistance value is reduced, when the temperature reaches a certain value, the resistance value is reduced by a certain value, at the moment, the current of the grid loop passing through the field effect tube is discharged through the thermistor, the grid and the source are in equal voltage, the field effect tube does not work, the drain to source loop does not work, then the second electromagnet connected in series with the drain is powered off, the fourth spring pushes the iron sheet to move downwards, so that the iron sheet is communicated with the first metal plate and the second metal plate, the first electromagnet is electrified, the iron sheet is attracted, the wedge block is driven to retract through the slide bar, the clamping hook is released, and the fixed disc can be lifted to be disconnected with the elastic contact, thereby achieving the overheat protection effect.
Furthermore, the field effect tube adopts an irfz44n field effect tube, the thermistor adopts a 20kNTC thermistor, and the constant value resistor adopts a 33k constant value resistor.
The beneficial effects of the invention are as follows: (1) According to the invention, the lifting mechanism is arranged in the base, the magnetic core is controlled to be up and down through the electromagnetic coil, so that the lifting plate is controlled to be up and down, when the locking structure is unlocked, the fixed plate is jacked up through the first spring, and the fixed plate is jacked up through the lifting rod, so that the fixed disc is driven to be separated from the circular groove, the elastic contact is separated from the contact, the power supply of the wireless charging coil is disconnected, and the damage to electronic devices caused by overheating of the wireless charging coil is avoided; (2) According to the invention, through the arrangement of the rotating seat, when the mobile phone fixing frame is rotated, the first ratchet pushes the second ratchet away, so that the mobile phone fixing frame can be lifted, when the rotation is stopped, the second ratchet is pushed by the second spring to be meshed with the first ratchet, so that the mobile phone fixing frame is fixed, free rotation is avoided, meanwhile, the fixing frame is lifted up through the notch, the mobile phone is inserted between the fixing frame and the supporting plate, the mobile phone is fixed through the fixing frame, and the mobile phone is prevented from falling off when the supporting plate is inclined; (3) According to the invention, the temperature control mechanism is arranged on the supporting plate, when the thermistor is heated, the resistance value is reduced, when the thermistor reaches a certain temperature, the resistance value is reduced by a certain value, at the moment, the current of the grid loop passing through the field effect tube is discharged through the thermistor, the grid and the source are in equal voltage, the field effect tube does not work, the drain to source loop does not work, then the second electromagnet connected in series with the drain is powered off, the fourth spring pushes the iron sheet to move downwards, so that the iron sheet is communicated with the first metal plate and the second metal plate, the first electromagnet is electrified, the iron sheet is attracted, the wedge is driven to retract by the slide bar, the clamping hook is released, and the fixed disc can be lifted to disconnect with the elastic contact, thereby achieving the overheat protection effect.
Drawings
FIG. 1 is an overall block diagram of a wireless charger with overheat protection according to the present invention;
FIG. 2 is a cross-sectional view of a base of a wireless charger with overheat protection according to the present invention;
FIG. 3 is an enlarged view at A of FIG. 2;
FIG. 4 is a diagram of a mobile phone holder of a wireless charger with overheat protection according to the present invention;
FIG. 5 is a block diagram of a rotating base of a wireless charger with overheat protection according to the present invention;
FIG. 6 is a cross-sectional view of a swivel mount of a wireless charger with overheat protection according to the present invention;
FIG. 7A is a folding schematic diagram of a mobile phone holder with overheat protection for a wireless charger according to the present invention;
FIG. 7B is a schematic diagram showing the development of a mobile phone holder with overheat protection for a wireless charger according to the present invention;
FIG. 8 is a bottom view of a mobile phone holder with overheat protection for a wireless charger according to the present invention;
FIG. 9 is a block diagram of a temperature control circuit of a wireless charger with overheat protection according to the present invention;
FIG. 10 is a bottom view of a temperature control circuit of a wireless charger with overheat protection according to the present invention;
Fig. 11 is a perspective view of a temperature control circuit of a wireless charger with overheat protection according to the present invention.
Reference numerals: 1. a base; 2. a lifting mechanism; 21. a top plate; 22. a fixed rod; 23. an electromagnetic coil; 24. a magnetic core; 25. a first spring; 26. a fixing plate; 27. a lifting rod; 28. a lifting plate; 29. a fixed disc; 3. a rotating table; 4. a rotating seat; 41. a rotating block; 42. a limiting tube; 43. a first ratchet; 44. a rotating frame; 45. a first limiting plate; 46. an inner tube; 47. a threading hole; 48. a second spring; 49. a movable plate; 410. a second ratchet; 5. a mobile phone fixing frame; 51. a support plate; 52. a connecting rod; 53. a fixed frame; 54. a wireless charging coil; 55. a notch; 56. a first positioning magnet; 57. a second positioning magnet; 6. a circular groove; 7. a locking structure; 71. a first groove; 72. a second groove; 73. a second limiting plate; 74. a slide bar; 75. iron blocks; 76. a first electromagnet; 77. a third spring; 78. wedge blocks; 79. a clamping hook; 8. a temperature control mechanism; 81. a mounting plate; 82. a field effect transistor; 83. a gate; 84. a drain electrode; 85. a source electrode; 86. a first electric wire; 87. a fixed value resistor; 88. a second electric wire; 89. a second electromagnet; 810. a third electric wire; 811. a fourth electric wire; 812. a thermistor; 813. a fifth electric wire; 814. a fourth spring; 815. iron sheet; 816. a first metal plate; 817. a second metal plate; 9. an elastic contact; 10. a contact; 11. a display screen; 12. foot pad.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-11, a wireless charger with overheat protection in this embodiment includes a base 1, a rotating table 3 is rotatably connected to the upper end of a lifting mechanism 2, a circular groove 6 is formed in the upper surface of the base 1, a plurality of foot pads 12 are fixedly connected to the lower end of the base 1, a display screen 11 is fixedly connected to the base 1, an elastic contact 9 is fixedly connected to the inside of the circular groove 6, a fixed disc 29 can be positioned through the use of the circular groove 6, and contact between the elastic contact 9 and a contact piece 10 is ensured.
As shown in fig. 2 and 4, the lifting mechanism 2 is arranged at the upper end of the base 1 in a penetrating manner, the lifting mechanism 2 comprises a lifting rod 27 which is connected to the base 1 in a penetrating and sliding manner, a lifting plate 28 is fixedly connected to the upper end of the lifting rod 27, a fixed disc 29 is fixedly connected to the lifting plate 28, a pair of top plates 21 are fixedly connected to the base 1, a pair of first springs 25 are fixedly connected to two ends of the top plates 21, one end, far away from the top plates 21, of each first spring 25 is fixedly connected with a fixed plate 26, a magnetic core 24 is fixedly connected to the lower end of each fixed plate 26, the first springs 25 are lifted by pushing the fixed plate 26, the lifting plate 28 is lifted by pushing the lifting rod 27, and accordingly the fixed disc 29 is separated from the circular groove 6.
The fixed rod 22 is fixedly connected in the base 1, the electromagnetic coil 23 is fixedly connected to the fixed rod 22, the magnetic core 24 is connected in the electromagnetic coil 23 in a penetrating and sliding manner, the upper surface of the fixed plate 26 is fixedly connected with the lifting rod 27, the upper surface of the fixed disc 29 is rotationally connected with the rotating table 3, the lower surface of the fixed disc 29 is fixedly connected with the contact 10, the elastic contact 9 is electrically connected with the contact 10, the electromagnetic coil 23 is electrified to drive the magnetic core 24 to move downwards, so that the fixed plate 26 drives the lifting plate 28 to move downwards through the lifting rod 27, the fixed disc 29 returns to the circular groove 6, the elastic contact 9 is contacted with the contact 10 again, the clamping hook 79 is clamped by the wedge 78, and charging is carried out again.
As shown in fig. 3, a locking structure 7 is disposed in the circular groove 6, the locking structure 7 includes a first groove 71 disposed at the bottom of the circular groove 6, a second groove 72 is disposed at one side of the first groove 71, a second limiting plate 73 is fixedly connected in the second groove 72, a first electromagnet 76 is fixedly connected at one end of the second groove 72 far away from the first groove 71, a sliding rod 74 is connected to the second limiting plate 73 in a penetrating and sliding manner, an iron block 75 is fixedly connected at one end of the sliding rod 74 near the first electromagnet 76, a wedge 78 is fixedly connected at one end of the sliding rod 74 far away from the iron block 75, a third spring 77 is disposed between the wedge 78 and the second limiting plate 73, a wedge 79 is fixedly connected at the lower end of the fixed disc 29, the wedge 79 and the wedge 78 are engaged with each other, the hook 79 is inserted into the first groove 71, the hook 79 pushes away the wedge 78, then the wedge 78 bounces back under the pushing of the third spring 77, and the hook 79 is blocked, and when unlocking is needed, the first electromagnet 76 is energized, the wedge 75 is attracted by the sliding rod 78, and the wedge 78 is retracted by the sliding rod 74, and the hook 79 is released.
As shown in fig. 5 and 6, the rotating base 4 is fixedly connected to the upper surface of the rotating table 3, the rotating base 4 includes a rotating frame 44 fixed to the upper surface of the rotating table 3, both ends in the rotating frame 44 are fixedly connected with a first limiting plate 45, an inner tube 46 is fixedly connected to the first limiting plate 45 in a penetrating manner, a threading hole 47 is formed in the lower side of the inner tube 46, both ends of the rotating frame 44 are fixedly connected with a second spring 48, one end, far away from the first limiting plate 45, of the second spring 48 is fixedly connected with a movable plate 49, a plurality of second ratchets 410 are fixedly connected to the movable plate 49, a pair of rotating blocks 41 are fixedly connected to the lower surface of the mobile phone fixing frame 5, a limiting tube 42 is fixedly connected to the inner side of the rotating blocks 41, a plurality of first ratchets 43 are fixedly connected to the outer side of the limiting tube 42, the first ratchets 43 are meshed with the second ratchets 410, the limiting tube 42 and the inner tube 46 are in a rotating manner, the supporting plate 51 is rotated, at the moment, the first ratchets 43 push the second ratchets 410 open the second ratchets 41 to make the rotating block 41 and the rotating frame 44 rotate relatively, and then the second spring 48 pushes the movable plate 49, the second ratchets 410 and the first ratchets 410 are locked and the supporting plate 51 are prevented from rotating randomly.
As shown in fig. 7A, fig. 7B and fig. 8, the mobile phone fixing frame 5 is fixedly connected to the rotating base 4, the mobile phone fixing frame 5 includes a supporting plate 51 fixed on the rotating block 41, two sides of the supporting plate 51 are respectively and rotatably connected with a pair of connecting rods 52, one end of each connecting rod 52, which is far away from the supporting plate 51, is rotatably connected with a fixing frame 53, a notch 55 is formed at the lower end of the fixing frame 53, a pair of first positioning magnets 56 is fixedly connected to the lower end of the supporting plate 51, a pair of second positioning magnets 57 is fixedly connected to the lower end of the fixing frame 53, the first positioning magnets 56 and the second positioning magnets 57 are in a homopolar attraction arrangement, a wireless charging coil 54 is fixedly connected to the upper surface of the supporting plate 51, the fixing frame 53 is buckled through the notch 55, the fixing frame 53 is separated from the attraction fixation of the first positioning magnets 56 and the second positioning magnets 57, the mobile phone is inserted between the fixing frame 53 and the supporting plate 51, and the wireless charging coil 54 charges the mobile phone.
As shown in fig. 9-11, the temperature control mechanism 8 is fixedly connected in the mobile phone fixing frame 5, the temperature control mechanism 8 comprises a mounting plate 81 fixed in the supporting plate 51, a field effect tube 82 is fixedly connected on the mounting plate 81, a grid 83, a drain 84 and a source 85 are respectively arranged on the field effect tube 82, a first electric wire 86 is fixedly connected on the grid 83, one end of the first electric wire 86, far from the grid 83, is fixedly connected with a fixed value resistor 87, one end of the fixed value resistor 87, far from the first electric wire 86, is fixedly connected with a second electric wire 88, one end of the second electric wire 88, far from the fixed value resistor 87, is fixedly connected with a second electromagnet 89, one end of the second electromagnet 89, far from the second electric wire 88, is fixedly connected with a third electric wire 810, the third electric wire 810 is fixedly connected with the drain 84, a fourth electric wire 811 is fixedly connected on the grid 83, one end of the fourth electric wire 811, far from the grid 83, is fixedly connected with a thermistor 812, a fifth wire 813 is fixedly connected to the source electrode 85, one end of the fifth wire 813, far from the source electrode 85, is fixedly connected with the thermistor 812, the lower end of the mounting plate 81 is fixedly connected with a fourth spring 814, one end of the fourth spring 814, far from the mounting plate 81, is fixedly connected with an iron sheet 815, the lower end of the mounting plate 81 is fixedly connected with a first metal plate 816 and a second metal plate 817, the iron sheet 815 is respectively and electrically connected with the first metal plate 816 and the second metal plate 817, the first wire 86 is electrically connected with the positive electrode of the power supply, the source electrode 85 is electrically connected with the negative electrode of the power supply, the thermistor 812 detects that the temperature is too high, the resistance value is reduced to a certain value, at the moment, the current of the grid 83 loop passing through the field effect transistor 82 is discharged through the thermistor 812, the grid 83 and the source electrode 85 are equal in voltage, the field effect transistor 82 does not work, the drain electrode 84 is not work to the source electrode 85 loop, then the second electromagnet 89 connected in series with the drain electrode 84 is powered off, the fourth spring 814 pushes the iron plate 815 downward, thereby causing the iron plate 815 to communicate with the first metal plate 816 and the second metal plate 817, and energizing the first electromagnet 76.
The field effect tube 82 adopts an irfz44n field effect tube, the thermistor 812 adopts a20 kNTC thermistor, and the fixed resistor 87 adopts a33 k fixed resistor
The working principle of this embodiment is as follows, the fixed frame 53 is buckled through the notch 55, the fixed frame 53 is separated from the attraction and fixation of the first positioning magnet 56 and the second positioning magnet 57, the mobile phone is inserted between the fixed frame 53 and the supporting plate 51, then the rotating table 3 is pressed downwards, the lifting plate 28 is lowered, the fixed disc 29 is inserted into the circular groove 6, at this time, the elastic contact 9 is contacted with the contact piece 10, the wireless charging coil 54 is powered, the mobile phone is charged wirelessly, meanwhile, the clamping hook 79 is inserted into the first groove 71, the clamping hook 79 firstly pushes away the wedge block 78, then the wedge block 78 rebounds under the pushing of the third spring 77, and the clamping hook 79 is clamped;
When the angle of the mobile phone needs to be adjusted, the first ratchet 43 pushes the second ratchet 410 to rotate relatively between the rotating block 41 and the rotating frame 44 by rotating the supporting plate 51, and then the second spring 48 pushes the movable plate 49 to enable the second ratchet 410 to be meshed with the first ratchet 43, so that the locking is performed, and the supporting plate 51 is prevented from rotating randomly;
in the charging process, if the thermistor 812 detects that the temperature is too high, the resistance value is reduced to a certain value, at the moment, the current of the grid 83 loop passing through the field effect tube 82 is discharged through the thermistor 812, the voltage of the grid 83 and the source 85 is equal, the field effect tube 82 does not work, the drain 84 to the source 85 loop does not work, then the second electromagnet 89 connected in series with the drain 84 is powered off, the fourth spring 814 pushes the iron sheet 815 to move downwards, so that the iron sheet 815 is communicated with the first metal plate 816 and the second metal plate 817, the first electromagnet 76 is electrified, the iron sheet 75 is attracted, the wedge 78 is driven to retract through the slide rod 74, the clamping hook 79 is released, the fixed disc 29 is lifted under the pushing of the first spring 25, the connection between the elastic contact 9 and the contact 10 is disconnected, and the wireless charging coil 54 is powered off, so that overheating is avoided;
After a period of heat dissipation, the electromagnetic coil 23 is electrified to drive the magnetic core 24 to move downwards, so that the fixed plate 26 drives the lifting plate 28 to move downwards through the lifting rod 27, the fixed disc 29 returns to the circular groove 6, the elastic contact 9 and the contact 10 are contacted again, the clamping hook 79 is clamped by the wedge block 78, and recharging is performed.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. Wireless charger with overheat protection, including base (1), its characterized in that: the upper end of base (1) runs through and is provided with elevating system (2), the upper end of elevating system (2) rotates and is connected with rotating table (3), the last fixedly connected with of rotating table (3) rotates seat (4), fixedly connected with cell-phone mount (5) on rotating seat (4), fixedly connected with control by temperature change mechanism (8) in cell-phone mount (5), circular recess (6) have been seted up to the upper surface of base (1), be provided with locking structure (7) in circular recess (6), the lower extreme fixedly connected with of base (1) a plurality of callus on the sole (12), fixedly connected with display screen (11) on base (1), fixedly connected with elastic contact (9) in circular recess (6).
2. The wireless charger with overheat protection according to claim 1, wherein the lifting mechanism (2) comprises a lifting rod (27) penetrating through the base (1) in a sliding connection manner, the upper end of the lifting rod (27) is fixedly connected with a lifting plate (28), a fixed disc (29) is fixedly connected to the lifting plate (28), a pair of top plates (21) are fixedly connected to the base (1), a pair of first springs (25) are fixedly connected to two ends of the top plates (21), one end, far away from the top plates (21), of each first spring (25) is fixedly connected with a fixed plate (26), and the lower end of each fixed plate (26) is fixedly connected with a magnetic core (24).
3. The wireless charger with overheat protection according to claim 2, wherein a fixing rod (22) is fixedly connected in the base (1), an electromagnetic coil (23) is fixedly connected on the fixing rod (22), a sliding connection magnetic core (24) is penetrated in the electromagnetic coil (23), the upper surface of the fixing plate (26) is fixedly connected with a lifting rod (27), the upper surface of the fixing disc (29) is rotationally connected with the rotating table (3), the lower surface of the fixing disc (29) is fixedly connected with a contact (10), and the elastic contact (9) is electrically connected with the contact (10).
4. The wireless charger with overheat protection according to claim 1, wherein the rotating base (4) comprises a rotating frame (44) fixed on the upper surface of the rotating base (3), two ends in the rotating frame (44) are fixedly connected with a first limiting plate (45), an inner pipe (46) is fixedly connected to the first limiting plate (45), a threading hole (47) is formed in the lower side of the inner pipe (46), second springs (48) are fixedly connected to two ends of the rotating frame (44), one end, far away from the first limiting plate (45), of each second spring (48) is fixedly connected with a movable plate (49), a plurality of second ratchets (410) are fixedly connected to the movable plate (49), a pair of rotating blocks (41) are fixedly connected to the lower surface of the mobile phone fixing frame (5), limiting pipes (42) are fixedly connected to the inner sides of the rotating blocks (41), a plurality of first ratchets (43) are fixedly connected to the outer sides of the limiting pipes (42), the first ratchets (43) are matched with the second ratchets (410), and the limiting pipes (46) are matched with each other.
5. The wireless charger with overheat protection according to claim 4, wherein the mobile phone fixing frame (5) comprises a supporting plate (51) fixed on the rotating block (41), two sides of the supporting plate (51) are rotationally connected with a pair of connecting rods (52), one end, far away from the supporting plate (51), of each connecting rod (52) is rotationally connected with a fixing frame (53), a notch (55) is formed in the lower end of each fixing frame (53), a pair of first positioning magnets (56) are fixedly connected to the lower end of each supporting plate (51), a pair of second positioning magnets (57) are fixedly connected to the lower end of each fixing frame (53), the first positioning magnets (56) and the second positioning magnets (57) are in a same-phase attraction arrangement, and a wireless charging coil (54) is fixedly connected to the upper surface of each supporting plate (51).
6. A wireless charger with overheat protection according to claim 3, characterized in that, locking structure (7) includes first recess (71) of seting up in circular recess (6) bottom, second recess (72) have been seted up to one side of first recess (71), fixedly connected with second limiting plate (73) in second recess (72), one end fixedly connected with first electro-magnet (76) of second recess (72) keeping away from first recess (71), run through sliding connection on second limiting plate (73) has slide bar (74), one end fixedly connected with iron plate (75) that slide bar (74) are close to first electro-magnet (76), one end fixedly connected with voussoir (78) that slide bar (74) kept away from iron plate (75), be provided with third spring (77) between voussoir (78) and second limiting plate (73), the lower extreme fixedly connected with pothook (79) of fixed disc (29), pothook (79) and voussoir (78) each other block cooperation.
7. The wireless charger with overheat protection according to claim 5, wherein the temperature control mechanism (8) comprises a mounting plate (81) fixed in a supporting plate (51), a field effect tube (82) is fixedly connected to the mounting plate (81), a grid (83), a drain (84) and a source (85) are respectively arranged on the field effect tube (82), a first electric wire (86) is fixedly connected to the grid (83), a fixed resistor (87) is fixedly connected to one end of the first electric wire (86) far away from the grid (83), a second electric wire (88) is fixedly connected to one end of the fixed resistor (87) far away from the first electric wire (86), a second electromagnet (89) is fixedly connected to one end of the second electric wire (88) far away from the fixed resistor (87), a third electric wire (810) is fixedly connected to one end of the second electromagnet (89) far away from the second electric wire (88), the third electric wire (810) is fixedly connected to the drain (84), a fourth electric wire (811) is fixedly connected to the grid (83), a fifth electric wire (811) is fixedly connected to one end of the fourth electric wire (811) far away from the grid (83), one end that source (85) was kept away from to fifth electric wire (813) and thermistor (812) fixed connection, the lower extreme fixedly connected with fourth spring (814) of mounting panel (81), one end fixedly connected with iron sheet (815) that mounting panel (81) was kept away from to fourth spring (814), the lower extreme fixedly connected with first metal sheet (816) and second metal sheet (817) of mounting panel (81), iron sheet (815) respectively with first metal sheet (816), second metal sheet (817) electric connection, first electric wire (86) and positive electric connection of power, source (85) and negative electric connection of power.
8. The wireless charger with overheat protection of claim 7, wherein the fet (82) is an irfz44n fet, the thermistor (812) is a 20kNTC thermistor, and the fixed resistor (87) is a 33k fixed resistor.
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