CN214377996U - Medium-high power wireless charging coil structure - Google Patents
Medium-high power wireless charging coil structure Download PDFInfo
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- CN214377996U CN214377996U CN202023021910.8U CN202023021910U CN214377996U CN 214377996 U CN214377996 U CN 214377996U CN 202023021910 U CN202023021910 U CN 202023021910U CN 214377996 U CN214377996 U CN 214377996U
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Abstract
The utility model relates to a charging coil technical field specifically discloses a well high-power wireless charging coil structure, including coil structure, division board, magnetic sheet, resonance electric capacity group, the heat radiation structure who stacks gradually the setting. The utility model realizes installation by stacking, and has good heat conduction effect; through the matching of glue pouring, the sealing groove and the bulge, the sealing effect is good; the change of the capacitance can be effectively realized by adjusting the connection relation between the capacitances; the high-power-efficiency charging system has good heat conduction and heat dissipation performance, can effectively reduce heat generated by coil internal resistance, eddy current and heat dissipation structure magnetic leakage induction eddy current, can inhibit the change of coil parameters through the reduction of heat, and ensures the stability of the charging system.
Description
Technical Field
The utility model relates to a wireless charging technology field, in particular to well high-power wireless charging coil structure.
Background
With the development of science and technology, warehouse logistics and inspection are gradually advanced to unmanned electrical intelligence. Therefore, the current carrying robots, inspection robots and the like are a great development trend. Electric energy as a power source of a robot is a problem that must be solved at present, and one of the problems is unmanned charging. At present, a contact charging circuit adopts a carbon brush or a contact for electric energy transmission, but the contact charging circuit is exposed to electric shock surface oxidation, contact ignition and a dry environment in a use environment, so that the service life of the contact charging circuit is short and the contact charging circuit is unsafe. The best approach to these problems is to employ wireless charging systems.
At present, although consumer-grade wireless charging devices are available on the market, the power of the wireless charging devices is very small, the wireless charging devices generally have the maximum power output of 10-20w, and the power supply for the robot is far from enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a well high-power wireless charging coil structure is provided.
The utility model provides a solution that technical problem adopted is:
a medium-high power wireless charging coil structure comprises a coil structure, an isolation plate, a magnetic plate, a resonant capacitor group and a heat dissipation structure which are sequentially stacked.
In some possible embodiments, to achieve efficient heat dissipation; the heat dissipation structure comprises an air duct cover and a radiator which are arranged in sequence; the radiator is arranged between the resonance capacitor bank and the air duct cover.
In some possible embodiments, there is a gap between the heat sink and the air duct cover, the gap being 3-5 mm. This is provided for the purpose of enabling air to flow in from the side.
In some possible embodiments, the heat sink includes a base plate, a turbine heat dissipation fan mounted on a side of the base plate adjacent to the duct cover; a resonant capacitor group mounting groove is formed in one side of the substrate, which is far away from the air duct cover; an air inlet window is arranged on the air duct cover; the air inlet window is arranged corresponding to the turbine cooling fan.
In some possible embodiments, the resonant capacitor bank includes a PCB board mounted in the resonant capacitor bank mounting groove, a plurality of capacitors mounted on the PCB board and connected to the PCB board, and an output lead connected to the capacitors. The resonance capacitor group can change the series-parallel connection mode among the single capacitors to change the capacitance value, so as to achieve the appropriate parameter value.
In some possible embodiments, in order to effectively ensure that the magnetic plate and the coil are arranged at equal intervals, the consistency of parameters is ensured; the division board is the equidistance division board, and is hollow out construction.
In some possible embodiments, the coil structure is a disk coil, made of litz wire; when the magnetic field is used as a primary side, the magnetic field is generated when high-frequency conversion current is passed through the magnetic field, and when the magnetic field is used as a secondary side, the magnetic field is converted into a high-frequency alternating current electric field.
The magnetic plate is formed by integrally sintering and casting manganese-zinc ferrite, so that the effects of gathering magnetism and increasing magnetic flux are realized.
In some possible embodiments, a potting isolator is further disposed between the magnetic plate and the resonant capacitor bank. The encapsulation isolator is used for assembling the coil, the magnetic plate and the isolation plate.
In some possible embodiments, the coil structure further comprises a housing which is arranged on one side of the coil structure, which is far away from the partition plate, and is provided with a mounting groove, and the coil structure, the partition plate and the magnetic plate are sequentially mounted in the mounting groove; the shell, the radiator and the air duct cover are connected through bolts; the coil structure is located between the separator and the housing.
In some possible embodiments, in order to effectively achieve high thermal conductivity, the shell is made of a hybrid ABS-GF material; the shell comprises a bottom plate and a vertical plate arranged on the bottom plate; the vertical plate and the bottom plate are matched with each other to form a mounting groove, and a sealing groove is formed in one side of the vertical plate, which is far away from the bottom plate; and one side of the substrate, which is close to the bottom plate, is provided with a bulge which is matched with the sealing groove.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model realizes installation by stacking, and has good heat conduction effect;
the utility model has good sealing effect through the matching of glue filling, the sealing groove and the bulge;
in the utility model, the change of the capacitance can be effectively realized by adjusting the connection relation between the capacitances;
the utility model discloses have good heat conduction, heat dispersion can effectual reduction because the heat that coil internal resistance, vortex and heat radiation structure magnetic leakage induction vortex produced, will restrain the change of coil parameter through thermal reduction, guarantees charging system's stability.
Drawings
Fig. 1 is a schematic diagram of the explosion structure of the present invention;
fig. 2 is a schematic sectional structure of the present invention;
FIG. 3 is a schematic structural diagram of the middle substrate of the present invention
Fig. 4 is a schematic structural diagram of a middle resonant capacitor bank of the present invention;
FIG. 5 is a schematic structural view of the potting isolator of the present invention;
fig. 6 is a schematic structural view of the housing of the present invention;
fig. 7 is a schematic structural view of the coil of the present invention;
wherein: 1. an air duct cover; 2. a turbine radiator fan; 3. a heat sink; 31. a resonant capacitor bank mounting groove; 32. a wire outlet glue sealing groove; 33. a substrate; 34. a heat dissipating tooth; 35. a protrusion; 4. a resonant capacitor bank; 41. a PCB board; 42. a capacitor; 43. a coil weld post; 44. an output lead; 5. filling and sealing the isolator; 6. a temperature control switch; 7. an outgoing line rubber terminal; 8. a magnetic plate; 9. a separator plate; 10. a coil; 11. a housing.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "first," "second," and similar words, does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
In the implementation of the present application, "and/or" describes an association relationship of associated objects, which means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
In the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified. For example, the plurality of positioning posts refers to two or more positioning posts.
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The present invention will be further explained with reference to the drawings and examples.
The utility model is realized by the following technical proposal, as shown in figures 1-7,
a high-power wireless charging coil 10 structure comprises a coil 10 structure, an isolation plate 9, a magnetic plate 8, a resonant capacitor group 4 and a heat dissipation structure which are sequentially stacked.
In some possible embodiments, to achieve efficient heat dissipation; the heat dissipation structure comprises an air duct cover 1 and a radiator 3 which are arranged in sequence; the radiator 3 is arranged between the resonance capacitor bank 4 and the air duct cover 1.
In some possible embodiments, there is a gap between the heat sink 3 and the air duct cover 1, and the gap is 3-5 mm. This is provided for the purpose of enabling air to flow in from the side.
In some possible embodiments, the heat sink 3 includes a base plate 33, a turbine heat dissipation fan 2 mounted on a side of the base plate 33 close to the air duct cover 1; a resonant capacitor bank mounting groove 31 is formed in one side, away from the air duct cover 1, of the substrate 33; an air inlet window is arranged on the air duct cover 1; the air intake window is provided corresponding to the turbo radiator fan 2.
Preferably, a temperature control switch 6 is further installed on a side surface of the substrate 33, the temperature control switch 6 is connected in series with the turbine cooling fan 2, and the function of the temperature control switch is that when the preset temperature value is reached, the turbine cooling fan 2 is turned on.
Preferably, the turbofan 2 is mounted on the base plate 33, a groove for the turbofan 2 is provided on the base plate 33, and a distance between the turbofan 2 and the air duct cover 1 is 3 mm; this is so arranged that air can flow from the slot when the air inlet window of the duct cover 1 is blocked.
In some possible embodiments, the resonant capacitor bank 4 includes a PCB 41 mounted in the resonant capacitor bank mounting groove 31, a plurality of capacitors 42 mounted on the PCB 41 and connected thereto, and an output lead 44 connected to the capacitors 42.
Preferably, the resonant capacitor bank 4 further includes a coil welding column 43, and the magnetic plate 8 is provided with a mounting hole for the coil welding column 43 to be mounted in a matching manner.
Preferably, the substrate 33 is further provided with an outlet sealant groove 32 and an output lead 44 connected to the capacitor 42, and the other end of the output lead 44 passes through the outlet sealant groove 32. The outgoing line sealing groove 32 is used for sealing lines which need to be led out, so that the protection grade is improved.
Preferably, the output end of the output lead 44 is wrapped by the outgoing line rubber terminal 7, the side surface of the substrate 33 is provided with a circular hole communicated with the outgoing line sealing glue groove 32, and the output end of the output lead 44 penetrates through the circular hole and is wrapped by the outgoing line rubber terminal 7. The outgoing line rubber terminal 7 has the function of wrapping and protecting the outgoing lead 44.
Preferably, the resonant capacitor bank 4 can change the series-parallel connection mode between the individual capacitors 42 to realize the change of the capacitor 42 value, so as to achieve the proper parameter value.
Preferably, heat dissipation teeth 34 are provided on the side surface of the base plate 33; the heat dissipation area is increased by the heat dissipation teeth 34, thereby utilizing heat exchange.
In some possible embodiments, in order to effectively ensure that the magnetic plate 8 and the coil 10 are arranged at equal intervals, the consistency of parameters is ensured; the division board 9 is an equidistant division board and is of a hollow structure.
The isolation plate 9 is positioned between the coil 10 and the magnetic plate 8, and has the function of enabling the magnetic plate 8 and the coil 10 to be arranged at equal intervals, so that parameter consistency is ensured. And it adopts the design of cavity hollow out construction for heat conduction casting glue can be fine and coil 10 contact, and lead the heat to magnetic sheet 8.
In some possible embodiments, the coil 10 is configured as a disk coil 10, made of litz wire; when the magnetic field is used as a primary side, the magnetic field is generated when high-frequency conversion current is passed through the magnetic field, and when the magnetic field is used as a secondary side, the magnetic field is converted into a high-frequency alternating current electric field.
The magnetic plate 8 is formed by integrally sintering and casting manganese-zinc ferrite, so that the effects of gathering magnetism and increasing magnetic flux are realized.
In some possible embodiments, a potting isolator 5 is further disposed between the magnetic plate 8 and the resonant capacitor bank 4. The potting isolator 5 is used for assembling the coil 10, the magnetic plate 8, and the isolation plate 9.
In some possible embodiments, the coil structure further comprises a housing 11 which is arranged on the side of the coil 10 structure far away from the partition plate 9 and is provided with a mounting groove, and the coil 10 structure, the partition plate 9 and the magnetic plate 8 are sequentially mounted in the mounting groove; the shell 11, the radiator 3 and the air duct cover 1 are connected through bolts; the coil 10 structure is located between the separator 9 and the housing 11.
Preferably, a groove is formed in one side, away from the resonant capacitor bank 4, of the potting isolator 5, one sides of the magnetic plate 8, the isolation plate 9 and the coil 10 are installed in the groove, and the potting isolator 5 is installed in the installation groove;
preferably, the potting isolator 5 is installed in the installation groove, and the height of the potting isolator 5 is less than 1mm of the height of the installation groove; the arrangement is such that there is a gap between the magnetic plate 8 and the heat dissipation structure, reducing the eddy current effect due to the leakage flux acting on the heat dissipation structure.
In some possible embodiments, in order to effectively achieve high thermal conductivity, the housing 11 is made of a hybrid ABS-GF material; the shell 11 comprises a bottom plate and a vertical plate arranged on the bottom plate; in order to effectively improve the sealing effect of the utility model; the vertical plate and the bottom plate are matched with each other to form a mounting groove, and a sealing groove is formed in one side of the vertical plate, which is far away from the bottom plate; and a bulge 35 which is matched with the sealing groove is arranged on one side of the base plate 33 close to the bottom plate.
In some possible embodiments, the side of the potting isolator 5 close to the housing 11 is provided with an assembly slot for the assembly of the coil 10, the magnetic plate 8, the isolation plate 9.
The housing 11 is mainly used for packaging and is made of a high-thermal-conductivity and high-strength hybrid ABS-GF material. The sealing groove is provided for mounting a sealing rubber strip and cooperates with the protrusion 35 on the base plate 33 to form an effective sealing structure.
The bottom plate is provided with the reinforcing ribs, and the coil 10 and other structures are supported by the reinforcing ribs, so that the thermal resistance is reduced, and partial heat can be radiated through the shell 11; a threaded hole is formed in the vertical plate, and the base plate 33 is screwed with the vertical plate.
The assembling method comprises the following steps:
firstly, the turbine cooling fan 2 is arranged on a base plate 33, a lead of the turbine cooling fan 2 is penetrated into a wire outlet glue sealing groove 32, glass glue is arranged at a penetrating point, and the lead of the fan of the turbine cooling fan 2 is connected with a temperature control switch 6 in series;
connecting the air duct cover 1 with the base plate 33 through bolts to form an air duct;
installing the proportioned resonant capacitor bank 4 in the resonant capacitor bank installation groove 31;
placing the encapsulation isolator 5 on the resonance capacitor bank 4, and reducing the glue filling fixation treatment of the encapsulation isolator 5 to ensure that the glue filling thickness is 1mm higher than the bottom plate of the glue filling isolator; continuously shaking in the encapsulating process to enable air in the colloid to escape out, reducing parasitic capacitance 42 generated by formed air bubbles, pressing the magnetic plate 8 on the isolator encapsulation when the encapsulating adhesive does not start to solidify, and then waiting for the encapsulating adhesive to solidify;
placing the equidistant partition plate on the magnetic plate 8, performing primary glue pouring treatment, wherein the glue pouring thickness is equal to that of the equidistant magnetic plate 8, and then waiting for glue solidification;
placing the coil 10 on the equidistant partition board, welding two ends of the coil 10 with the coil welding columns 43 on the resonance capacitor group 4, welding the insulating layer of the litz wire during welding, and adding enough tin during welding with welding points to ensure through welding and prevent the problem of overlarge resistance and heating caused by insufficient welding;
after welding, the coil 10 is filled with glue, and the glue is flushed with the potting isolator 5 and waits for the glue to solidify.
Placing the sealing rubber strips into the sealing grooves of the shell 11, and simultaneously coating glass silica gel on two sides of the sealing pressing table of the radiator 3; fitting the front end shell 11 on the radiator 3, inserting a connecting screw into a threaded hole of the shell 11, and fixedly connecting the shell with the rear radiator 3 by screwing;
and (5) finishing the assembly.
The foregoing detailed description of the embodiments of the present application has been presented, and specific examples have been applied in the present application to explain the principles and implementations of the present application, and the above description of the embodiments is only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. The utility model provides a well high-power wireless charging coil structure which characterized in that: the device comprises a coil structure, an isolation plate, a magnetic plate, a resonant capacitor group and a heat dissipation structure which are sequentially stacked; the heat dissipation structure comprises an air duct cover and a radiator which are arranged in sequence; the radiator is arranged between the resonance capacitor bank and the air duct cover; the heat radiator comprises a substrate and a turbine heat radiation fan arranged on one side of the substrate close to the air duct cover; a resonant capacitor group mounting groove is formed in one side of the substrate, which is far away from the air duct cover; an air inlet window is arranged on the air duct cover; the air inlet window is arranged corresponding to the turbine cooling fan.
2. The medium-high power wireless charging coil structure according to claim 1, wherein: a gap exists between the radiator and the air duct cover, and the gap is 3-5 mm.
3. The medium-high power wireless charging coil structure according to claim 2, wherein: the resonance capacitor bank comprises a PCB arranged in a mounting groove of the resonance capacitor bank, a plurality of capacitors arranged on the PCB and connected with the PCB, and an output lead connected with the capacitors.
4. The medium-high power wireless charging coil structure according to any one of claims 1-3, wherein: the division board is the equidistance division board, and is hollow out construction.
5. The medium-high power wireless charging coil structure according to any one of claims 1-3, wherein: the coil structure is a disc coil and is made of litz wires; the magnetic plate is formed by integrally sintering and casting manganese-zinc ferrite.
6. The medium-high power wireless charging coil structure according to any one of claims 1-3, wherein: and a potting isolator is also arranged between the magnetic plate and the resonance capacitor bank.
7. The medium-high power wireless charging coil structure according to claim 3, wherein: the coil structure, the isolation plate and the magnetic plate are sequentially arranged in the mounting groove; the shell, the radiator and the air duct cover are connected through bolts; the coil structure is located between the separator and the housing.
8. The medium-high power wireless charging coil structure according to claim 7, wherein: the shell comprises a bottom plate and a vertical plate arranged on the bottom plate; the vertical plate and the bottom plate are matched with each other to form a mounting groove, and a sealing groove is formed in one side of the vertical plate, which is far away from the bottom plate; and one side of the substrate, which is close to the bottom plate, is provided with a bulge which is matched with the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021910.8U CN214377996U (en) | 2020-12-15 | 2020-12-15 | Medium-high power wireless charging coil structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023021910.8U CN214377996U (en) | 2020-12-15 | 2020-12-15 | Medium-high power wireless charging coil structure |
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| CN214377996U true CN214377996U (en) | 2021-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023166105A1 (en) * | 2022-03-03 | 2023-09-07 | Brusa Elektronik Ag | Power transformer assembly |
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- 2020-12-15 CN CN202023021910.8U patent/CN214377996U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023166105A1 (en) * | 2022-03-03 | 2023-09-07 | Brusa Elektronik Ag | Power transformer assembly |
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