CN112636479A - Desktop embedded wireless charging equipment - Google Patents
Desktop embedded wireless charging equipment Download PDFInfo
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- CN112636479A CN112636479A CN202011540628.2A CN202011540628A CN112636479A CN 112636479 A CN112636479 A CN 112636479A CN 202011540628 A CN202011540628 A CN 202011540628A CN 112636479 A CN112636479 A CN 112636479A
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- heat dissipation
- dissipation channel
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- desktop
- upper heat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20127—Natural convection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明公开了无线充电技术领域中的一种桌面嵌入式的无线充电设备，包括嵌入桌面内的壳体和位于壳体内的电路板和无线充电模块，电路板与无线充电模块连接，且电路板与桌面内的电源电连接，无线充电模块包括充电线圈及位于充电线圈上下两侧的上封装板和下封装板，上封装板的上下表面均设有上散热通道，下封装板的上表面设有下散热通道，上散热通道和下散热通道均为辐射状的弧形通道，通过弧形通道的空气对流实现充电线圈热量的流通及散发，增加了无线充电器的散热效率。
The invention discloses a desktop embedded wireless charging device in the technical field of wireless charging, comprising a shell embedded in the desktop, a circuit board and a wireless charging module located in the shell, the circuit board is connected with the wireless charging module, and the circuit board It is electrically connected to the power supply in the desktop. The wireless charging module includes a charging coil and an upper packaging board and a lower packaging board located on the upper and lower sides of the charging coil. The upper and lower surfaces of the upper packaging board are provided with upper heat dissipation channels, and the upper surface of the lower packaging board is provided with an upper heat dissipation channel. There is a lower heat dissipation channel, the upper heat dissipation channel and the lower heat dissipation channel are both radial arc channels, and the air convection in the arc channel realizes the circulation and dissipation of the heat of the charging coil, which increases the heat dissipation efficiency of the wireless charger.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to desktop embedded wireless charging equipment.
Background
Wireless charging technology (english: Wireless charging technology; Wireless charging technology) is widely used in various industries, and a Wireless charger is a common charging device in daily life. The wireless charger utilizes the principle of electromagnetic induction, and the electromagnetic induction between primary and secondary coil produces electric current to realize the transmission of energy in space range, make between charger and the power consumption device with magnetic field transfer energy, and then realize contactless propagation.
The wireless charger is more applied to various charging devices such as vehicle-mounted charging devices and mobile charging devices, the wireless charger can be installed on a desktop at present, the wireless charger can be applied to places such as homes, office places, restaurants, bars, cafes and the like, and desktop type charging devices on the places are applied in a desktop embedding mode. However, the wireless charging device embedded in the desktop is not movable, and the periphery of the wireless charging device embedded in the desktop is surrounded inside the desktop panel, so that the heat dissipation of the periphery of the wireless charging device embedded in the desktop is limited. In addition, wireless charging equipment is at the in-process that charges to electronic product, and its heat production is high, and when the receiving coil of electronic product and wireless charging equipment's transmitting coil deviate great, its heat production is more, and consequently, this part heat need can obtain giving off as fast as possible to guarantee wireless charging equipment's normal operating and life.
However, the existing desktop wireless charging device has a poor heat dissipation effect, cannot meet the requirement of high-power electric quantity transmission, and the defect needs to be solved urgently.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides desktop embedded wireless charging equipment.
The technical scheme of the invention is as follows:
the utility model provides an embedded wireless battery charging outfit of desktop, includes the casing and is located circuit board and the wireless module of charging in the casing, the casing embedding desktop, the circuit board with the wireless module of charging is connected, just the circuit board with power electricity in the desktop is connected, its characterized in that, the wireless module of charging includes the charging coil and is located the last encapsulation board and the lower encapsulation board of both sides about the charging coil:
the upper and lower surface of going up the encapsulation board all is equipped with heat dissipation channel, the upper surface of encapsulation board is equipped with down heat dissipation channel down, go up heat dissipation channel with heat dissipation channel is radial arc passageway down, and the air convection through arc passageway realizes charging coil thermal circulation and giving off.
The invention according to the above scheme is characterized in that the upper heat dissipation channel and the lower heat dissipation channel are both grooves with narrow inside and wide outside.
The invention according to the above scheme is characterized in that the upper heat dissipation channel includes a first upper heat dissipation channel located on the upper surface of the upper package plate and a second upper heat dissipation channel located on the lower surface of the upper package plate, a through hole penetrating downwards is formed in the first upper heat dissipation channel, and the arc rotation directions of the first upper heat dissipation channel and the second upper heat dissipation channel are the same.
Furthermore, the upper heat dissipation channel further comprises a third upper heat dissipation channel positioned on the lower surface of the upper packaging plate, wherein the third upper heat dissipation channel is a radial arc-shaped channel, and the arc-shaped rotation direction of the third upper heat dissipation channel is opposite to that of the second upper heat dissipation channel.
The invention according to the above scheme is characterized in that the upper package plate is in a ring shape with a round hole in the middle, the inner end of the upper heat dissipation channel extends to the periphery of the round hole, and the outer end of the upper heat dissipation channel penetrates to the peripheral edge of the upper package plate.
The invention according to the above aspect is characterized in that the inner side ends of the lower heat dissipation channels are communicated with each other, and the outer side ends are located inside the edge of the lower package plate.
The invention according to the above scheme is characterized in that the charging coil comprises an inner coil and an outer coil, the outer coil surrounds the periphery of the inner coil, an outer end interface of the inner coil is located between two interfaces of the outer coil, an inner end interface of the inner coil is directly connected with the circuit board, and the outer end interface of the inner coil and the two interfaces of the outer coil are both connected with the circuit board through wiring parts.
Further, the wiring portion includes a wiring fixing portion and a wiring movable portion:
the two interfaces of the inner coil and the two interfaces of the outer coil are both fixed on the wiring fixing part;
the wiring movable part comprises a movable base and a movable driving lever, the movable driving lever rotates around a movable shaft, a first contact and a second contact are arranged on the movable base, a gap is formed between the first contact and the second contact, and the width of the second contact is not smaller than the distance between an outer end interface of the inner coil and an outer coil interface close to the outer end interface of the inner coil.
The invention according to the above scheme is characterized in that the housing is oval, the circuit board is oblong and adapted to the shape of the housing, and the charging module is located in the middle of the circuit board.
The invention according to the above scheme is characterized in that a clamping piece is arranged at the lower end of the shell, and the shell is fixed in the table top through the clamping piece.
According to the scheme, the wireless charging device has the advantages that the charging coil is packaged between the upper packaging plate and the lower packaging plate, and the heat of the charging coil is guided through the heat dissipation channel with the specific shape on the packaging plates, so that the heat can flow to the periphery as fast as possible, and the wireless charging device can dissipate heat quickly; the upper packaging plate and the lower packaging plate can be manufactured by one-step molding, and the production cost of products cannot be increased.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic diagram of a backside structure of the circuit board;
fig. 4 is a schematic structural diagram of a wireless charging module and a circuit board in an embodiment;
fig. 5 is a schematic structural diagram of a wireless charging module and a circuit board in another embodiment;
FIG. 6 is a schematic view of a contact embodiment of the present invention;
figure 7 is a schematic diagram of a charging coil;
figure 8 is a schematic diagram of a two layer charging coil connection;
fig. 9 is a schematic wiring diagram of a charging coil connector;
FIG. 10 is a schematic view of only the inner coil wiring;
figure 11 is a schematic diagram of a two layer charging coil connection;
fig. 12 is a schematic view of the upper side of the upper package plate;
FIG. 13 is a drawing showing the dimensions of the heat dissipation hole;
fig. 14 is a schematic view of the underside of the upper package plate;
fig. 15 is a schematic view of the underside of an upper package plate in another embodiment;
fig. 16 is a schematic view of the upper side of the lower package plate;
fig. 17 is a dimension labeled diagram of the lower heat dissipation channel.
In the figure, 10-housing; 101-upper shell; 102-a lower shell; 1021-perforation; 11-on-off key; 12-an adjustment bond; 13-positioning identification;
20-a clamping and fixing piece; 21-a first threaded portion; 22-a second threaded portion;
31-a wire; 32-external interface;
40-a circuit board; 401-switching components; 402-adjusting components; 403-a first support plate; 404-a second support plate; 405-a first adjusting collar; 406-a second adjusting collar; 41-a switching element; 42-an adjustment element; 43-a switch handling assembly; 44-conditioning the processing assembly;
51-a charging coil; 501-inner layer coil; 502-outer coil; 503-a wire fixing part; 504-wire connection moving part; 5041-a movable base; 5042-a movable deflector rod; 5043-a movable shaft; 5044-a first contact; 5045-a second contact; 52-upper package plate; 521-a first upper heat dissipation channel; 5221-second upper heat dissipation channel; 5222-third upper heat dissipation channel; 523-through holes; 53-lower package plate; 531-lower heat dissipation channel.
Detailed Description
The invention is further described with reference to the following figures and embodiments:
as shown in fig. 1 to 17, the present invention provides a desktop embedded wireless charging device, which includes a housing 10, and a circuit board 40 and a wireless charging module located in the housing 10. The shell 10 is embedded into the desktop, so that the electronic equipment can be charged when placed on the desktop, and the space is saved; the circuit board 40 is connected with the wireless charging module, the circuit board 40 is electrically connected with a power supply in the desktop, and the wireless charging function of the electronic equipment placed on the desktop is achieved through the wireless charging module.
According to specific requirements, the outer ring of the shell 10 can be embedded in a hole of the desktop, so that the desktop is tidier; the upper end of the shell 10 can be designed to slightly protrude out of the surface of the desktop, so that the electronic equipment can be taken and placed conveniently.
As shown in fig. 1 to 6, the housing 10 of the present invention is oval, the circuit board 40 is oblong corresponding to the shape of the housing 10, and the charging module is located in the middle of the circuit board 40. Through the design of ellipse circular, can be so that aim at the direction in desktop hole when installing this wireless battery charging outfit, avoid causing the uncertainty of control button direction, make the product surface more pleasing to the eye simultaneously, the design layout of the control button on product surface is more reasonable.
As shown in fig. 1, 2 and 6, the housing 10 of the present invention includes an upper case 101 and a lower case 102, and the circuit board 40 and the charging module are located in a space surrounded by the upper case 101 and the lower case 102. The upper shell 101 and the lower shell 102 may be fixedly connected by bolts, and may be fixed by clamping, bonding, welding, and the like, which is not limited in the present invention.
The lower end of the housing 10 is provided with a fastener 20, and the housing 10 is fixed in the table top by the fastener 20. Specifically, the upper end of the fastening member 20 is provided with a first threaded portion 21, and the fastening member 20 is screwed with the housing 10 through the first threaded portion 21; the lower end of the clamping piece 20 is provided with a second thread part 22, and the clamping piece 20 is screwed on the power supply equipment in the desktop through the second thread part 22. When the desk is installed, the second thread part 22 is screwed with the movable connecting end of the power supply equipment, the first thread part 21 is connected with the shell 10, and then the connecting end of the power supply equipment and the clamping piece 20 are clamped in the desk together with the shell 10.
Preferably, the clamping piece 20 is a hexagon nut, and the shell 10 is fixed to facilitate force application, so that the product can be more conveniently mounted, and meanwhile, the shell 10 can be mounted on the desktop and can be limited by the hexagon nut.
In the embodiment shown in fig. 1 and 2, the lower side of the circuit board 40 is connected to the external interface 32 through the wire 31, and the circuit board 40 is electrically connected to the power supply through the wire 31 and the external interface 32 in sequence. Preferably, the lower surface of the casing 10 is provided with a through hole 1021, and the lead 31 and the external interface 32 are connected to the power source through the through hole 1021.
In the embodiment shown in fig. 6, the underside of the circuit board 40 is provided with contact contacts, with which contact pins of the power supply are brought into contact through the housing 10. Preferably, the lower surface of the casing 10 is provided with a through hole 1021, and the contact pin of the power supply is connected to the power supply after passing through the through hole 1021.
The surface of epitheca 101 is equipped with on & off switch 11, adjustment key 12 and location sign 13, realizes opening and closing of the function of charging through on & off switch 11, realizes the regulation of charging power through adjustment key 12, can conveniently confirm wireless battery charging outfit's coil position through location sign 13, and location sign 13 can also play skid-proof effect simultaneously. In this embodiment, the positioning mark 13 is located at the center of the ellipse of the upper case 101, and the on-off key 11 and the adjustment key 12 are located at two focuses of the ellipse respectively, so that the design of the operation key is more beautiful and the operation is facilitated.
As shown in fig. 3 to 5, a switch element 41 corresponding to the switch key 11 is disposed on the circuit board 40, the switch element 41 includes a switch component 401 located on the upper surface of the circuit board 40 and a switch processing component 43 (i.e., a processing circuit for implementing a switching function) located on the lower surface of the circuit board 40, and the switch processing component 43 is electrically connected to the switch component 401. The circuit board 40 is provided with an adjusting element 42 corresponding to the adjusting key 12, the adjusting element 42 includes an adjusting component 402 located on the upper surface of the circuit board 40 and an adjusting processing component 44 (i.e. a processing circuit for implementing an adjusting function) located on the lower surface of the circuit board 40, and the adjusting processing component 44 is electrically connected to the adjusting component 402.
The switch key 11 and the adjustment key 12 may be mechanical buttons or touch screen buttons.
As shown in fig. 4, if the switch key 11 and the adjustment key 12 are touch screen buttons, the switch component 401 and the adjustment component 402 are corresponding touch modules, and the touch modules are directly fixed on the circuit board 40.
As shown in fig. 5, if the switch key 11 and the adjustment key 12 are mechanical buttons, the switch component 401 and the adjustment component 402 are corresponding button modules. In order to ensure the service life of the button module, in the embodiment shown in fig. 5, the circuit board 40 is provided with a first supporting plate 403 and a second supporting plate 404, the switch component 401 is disposed on the circuit board 40 through the first supporting plate 403, and the adjusting component 402 is disposed on the circuit board 40 through the second supporting plate 404. In order to increase the performance of product, increase user's experience and feel, set up first regulation bullet circle 405 on first backup pad 403, switch components and parts 401 cover is in the inside of first regulation bullet circle 405, set up second regulation bullet circle 406 on the second backup pad 404, adjust components and parts 402 cover in the inside of second regulation bullet circle 406, adjust bullet circle 405 and second regulation bullet circle 406 through first regulation respectively and kick-back mechanical button, user's experience sense has been increased.
As shown in fig. 7 to 11, the present invention is equipped with a wireless charging power adjustment device, which is matched with the adjustment key 12 to adapt to different charging requirements. The charging coil 51 comprises an inner coil 501 and an outer coil 502, the outer coil 502 surrounds the periphery of the inner coil 501, when high-power charging is not needed, only the inner coil 501 is connected into a charging circuit of the circuit board 40, and when high-power charging is needed, the inner coil 501 and the outer coil 502 are connected in series, so that the number of turns of the coils can be increased, and the charging efficiency can be adjusted.
As shown in fig. 7 and 8, the inner coil 501 of the present invention has two interfaces, i.e., an inner port P1 and an outer port P2, and the outer coil 502 has two interfaces, i.e., an inner port P3 and an outer port P4. In order to facilitate the series connection of the inner coil 501 and the outer coil 502, the outer end interface P2 of the inner coil 501 is arranged between two interfaces (an inner end interface P3 and an outer end interface P4) of the outer coil 502, the inner end interface P1 of the inner coil 501 is directly connected with the circuit board 40, when only the inner coil 501 is switched on, the outer end interface P2 of the inner coil 501 is connected into a circuit, when the inner coil 501 and the outer coil 502 need to be switched on simultaneously, the outer end interface P2 of the inner coil 501 is connected with the inner end interface P3 of the outer coil 502, and the outer end interface P4 of the outer coil 502 is counted into the circuit.
As shown in fig. 7 and 9, the outer end interface of the inner coil 501 and both interfaces of the outer coil 502 are connected to the circuit board 40 through the wire connecting portions. Specifically, the wire connection portion includes a wire connection fixing portion 503 and a wire connection movable portion 504: two interfaces of the inner coil 501 and two interfaces of the outer coil 502 are fixed on the wiring fixing part 503 to provide a supporting base for each interface; the connection movable part 504 is movably connected with an outer end interface P2 of the inner coil 501, an inner end interface P3 of the outer coil 502 and an outer end interface P4 of the outer coil 502. Preferably, in this embodiment, the wire fixing portion 503 is located at an upper side of each interface, and the wire moving portion 504 is located at a lower side of each interface.
In this embodiment, the wiring movable portion 504 includes a movable base 5041 and a movable shift lever 5042, the movable shift lever 5042 rotates around a movable shaft 5043, and the movable shift lever 5042 is adjusted by the adjustment key 12, so as to adjust the on/off of the movable base 5041 for different interfaces. The adjustment key 12 and the adjustment element 42 can be adjusted by the movable lever 5042 in various ways, such as electromagnetic control, push rod control, etc., and the skilled person can make different choices according to the specific design, and the details are not described herein.
The movable base 5041 is provided with a first contact 5044 and a second contact 5045: a gap is provided between the first contact 5044 and the second contact 5045, the gap being greater than the width of the inner end interface P3 of the outer coil 502; the width of the second contact 5045 is greater than the width of the first contact 5044, and the first contact 5044 is electrically connected to a charging circuit on the circuit board 40 through the conductive line 31. In order to selectively connect different interfaces, the positions of the first contact 5044 and the second contact 5045 may be adjusted so that the contacts are in contact with the different interfaces.
Preferably, the width of the second contact 5045 is not less than the distance between the outer end interface of the inner coil 501 and the adjacent outer end interface of the outer coil 502, so that the inner coil 501 and the outer coil 502 need to be connected, and the second contact 5045 is adjusted to simultaneously contact the outer end interface P2 of the inner coil 501 and the inner end interface P3 of the outer coil 502.
As shown in fig. 10, in the normal state, the inner end interface P1 of the inner coil 501 is normally connected to the circuit board 40, the second contact 5045 is in the floating state, the first contact 5044 is in contact with the outer end interface P2 of the inner coil 501, and the first contact 5044 is connected to the circuit board 40 through the wire 31. At this time, the circuit of the charging coil 51 is: the circuit board 40-the inner end interface P1 of the inner coil 501-the outer end interface P2 of the inner coil 501-the circuit board 40, and then the charging function is realized through the loop. In this case, the charging function is realized only by the inner coil 501, and the charging power is relatively small.
As shown in fig. 11, the connection moving portion 504 is rotated by the adjustment key 12, the inner end port P1 of the inner coil 501 is normally connected to the circuit board 40, the second contact 5045 is connected to the outer end port P2 of the inner coil 501 and the inner end port P3 of the outer coil 502, the first contact 5044 is in contact with the outer end port P4 of the outer coil 502, and the first contact 5044 is connected to the circuit board 40 through the wire 31. At this time, the circuit of the charging coil 51 is: the circuit board 40-the inner end interface P1 of the inner coil 501-the outer end interface P2 of the inner coil 501-the inner end interface P3 of the outer coil 502-the outer end interface P4 of the outer coil 502-the circuit board 40, and then the charging function is realized through the loop. At the same time, the charging function is realized by the series connection of the inner coil 501 and the outer coil 502, and the charging power is relatively large.
As shown in fig. 2 to 5 and 12 to 17, when the external electronic device is wirelessly charged by the wireless charging module, the wireless charging module generates a large amount of heat, and particularly when the position offset between the receiving coil in the electronic device and the wireless charging module is large, the coupling degree between the receiving coil and the wireless charging module is low, and the amount of heat generated by the wireless charging module and the electronic device is further increased. In order to radiate the wireless charging module in a targeted manner, the desktop embedded wireless charging device provided by the invention is provided with a radiating structure corresponding to the charging coil 51.
Specifically, the wireless charging module includes a charging coil 51, and an upper packaging plate 52 and a lower packaging plate 53 which are located on the upper and lower sides of the charging coil 51, and the charging coil 51 is cooled through the upper packaging plate 52 and the lower packaging plate 53 respectively. In addition, in the present invention, the upper package plate 52 and the lower package plate 53 are respectively provided with corresponding heat dissipation passages, so that the whole wireless charging module forms a hot air circulation channel, thereby achieving the purpose of heat dissipation. In the present invention, the upper and lower surfaces of the upper package plate 52 are provided with upper heat dissipation channels, and the upper surface of the lower package plate 53 is provided with a lower heat dissipation channel 531. The lower heat dissipating channel 531 is in air communication with an upper heat dissipating channel located on the lower surface of the upper package plate 52; the upper heat dissipation channels on the upper and lower surfaces of the upper package plate 52 form heat channels to achieve the purpose of heat dissipation; in addition, the upper heat dissipation channel on the upper surface of the upper package plate 52 also forms a channel for air circulation with the external space, thereby enhancing the heat dissipation purpose.
The upper heat dissipation channel and the lower heat dissipation channel 531 are radial arc channels, and the heat of the charging coil 51 is circulated and dissipated through air convection of the arc channels. In addition, the smoothness of air circulation is increased due to the arc-shaped passage, and the flow speed is increased.
The conventional wireless charging module is exposed in the air, and although the whole heat dissipation area is large, most of heat is still accumulated at the position of the wireless charging module due to the fact that the air is not circulated, and heat accumulation at the position is caused. According to the invention, through the design of the air channel, air can be gathered and dispersed along with the circulation of the channel, so that a good heat dissipation effect is achieved.
As shown in fig. 12 and 13, in the present invention, the upper heat dissipation channel includes a first upper heat dissipation channel 521 located on the upper surface of the upper package plate 52, and the first upper heat dissipation channel 521 has a flow guiding effect on air on the upper surface of the upper package plate 52. Meanwhile, the first upper heat dissipation channel 521 is a groove with a narrow inner part and a wide outer part, and when air is conducted from the inside to the outside, the flowing speed of the air is further increased through the increase of the width of the first upper heat dissipation channel 521, so that the heat can be quickly dissipated.
The first upper heat dissipating channel 521 is provided with a through hole 523 penetrating downwards, so that the first upper heat dissipating channel 521 can be communicated with the lower surface of the upper packaging plate 52 while the heat dissipation of the upper surface of the upper packaging plate 52 is completed, and the heat dissipation position of the lower surface of the upper packaging plate 52 is increased.
As shown in fig. 14, in the present invention, the upper heat dissipation channels include a second upper heat dissipation channel 5221 located on the lower surface of the upper package plate 52, the second upper heat dissipation channel 5221 guides air on the lower surface of the upper package plate 52, meanwhile, the second upper heat dissipation channel 5221 is a groove with a narrow inner portion and a wide outer portion, and when the air is conducted from the inside to the outside, the air flowing speed is further increased by increasing the width of the second upper heat dissipation channel 5221, thereby achieving rapid heat dissipation.
In this embodiment, the arc-shaped rotation directions of the first upper heat dissipation channel 521 and the second upper heat dissipation channel 5221 are the same, so that the second upper heat dissipation channel 5221 and the first upper heat dissipation channel 521 (the through hole 523) reflected to the lower surface of the upper package plate 52 are in a mutually crossing form.
As shown in fig. 15, the upper heat dissipating channels further include a third upper heat dissipating channel 5222 located on the lower surface of the upper package plate 52, and a multi-directional flow channel is formed on the lower surface of the upper package plate 52 by the mutual intersection of the second upper heat dissipating channel 5221 and the third upper heat dissipating channel 5222, so as to increase the multi-directional air flow.
In this embodiment, the arc-shaped rotation directions of the third upper heat dissipation channel 5222 and the second upper heat dissipation channel 5221 are opposite, so that the third upper heat dissipation channel 5222 and the first upper heat dissipation channel 521 (through hole 523) reflected on the lower surface of the upper package plate 52 have the same spiral direction. Also, in the present embodiment, the third upper heat dissipation channel 5222 and the first upper heat dissipation channel 521 (the through hole 523) reflected to the lower surface of the upper package plate 52 are overlapped with each other, so that the through hole 523 penetrates through the first upper heat dissipation channel 521 and the third upper heat dissipation channel 5222, and the heat of the third upper heat dissipation channel 5222 can be further conducted to the first upper heat dissipation through hole 523 through the through hole 523.
As a preferable scheme, the number of the first upper heat dissipation channel 521, the second upper heat dissipation channel 5221 and the third upper heat dissipation channel 5222 is equal, so that the upper package plate 52 is more convenient to process, and meanwhile, the circulation of air circulation is ensured and the heat dissipation effect is ensured through the regular design.
Go up encapsulation board 52 and be equipped with the ring shape platelike structure of round hole for the middle part, its shape with charging coil 51 is mutually supported, neither influences charging coil 51's magnetic field, can also lead and give off the heat in the middle part of charging coil 51 simultaneously. The inner ends of the upper heat dissipating channels (including the first upper heat dissipating channel 521, the second upper heat dissipating channel 5221, and the third upper heat dissipating channel 5222) extend to the periphery of the circular hole, and the outer ends of the upper heat dissipating channels penetrate the peripheral edge of the upper package plate 52, so that heat can be transferred to the periphery of the upper package plate 52.
As shown in fig. 16, the lower package plate 53 is a circular flat plate, and the lower heat dissipation channel 531 is located on the upper surface of the circular flat plate. This lower packaging board 53 can adopt the magnetism isolating plate to set up heat dissipation channel 531 down on the magnetism isolating plate, make it neither influence wireless charging module's magnetism isolating effect, can also play abundant heat dissipation purpose.
In the invention, the inner side ends of the lower heat dissipation channels 531 are communicated with each other, and the outer side ends are located inside the edge of the lower packaging plate 53, so that the outer end of each lower heat dissipation channel 531 cannot penetrate through the periphery of the lower packaging plate 53, and the influence on the heat dissipation performance of the circuit board 40 when heat is dissipated to the periphery is reduced.
The rotation direction of the lower heat dissipation channel 531 is opposite to the rotation direction of the upper heat dissipation channel (i.e., the first upper heat dissipation channel 521) located on the upper surface of the upper package plate 52, and thus the rotation direction of the lower heat dissipation channel 531 is the same as the spiral direction of the second upper heat dissipation channel 5221. The number of the first upper heat dissipating channels 521 is an integral multiple of the number of the lower heat dissipating channels 531, and when the upper package plate 52 and the lower package plate 53 are fixed, each lower heat dissipating channel 531 may vertically correspond to one of the second upper heat dissipating channels 5221, so that the lower heat dissipating channels 531 and the upper heat dissipating channels are vertically overlapped to form mutually communicated channels, and heat dissipation is accelerated through mutual convection between the lower heat dissipating channels and the upper heat dissipating channels.
In one embodiment, the number of the first upper heat dissipation channels 521 (the second upper heat dissipation channels 5221) is equal to the number of the lower heat dissipation channels 531, so that the lower heat dissipation channels 531 can correspond to the second upper heat dissipation channels 5221 one to one. Preferably, the number of the first upper heat dissipation channels 521, the second upper heat dissipation channels 5221 and the third upper heat dissipation channels 5222 is 10 to 14, and the number of the first upper heat dissipation channels 521, the second upper heat dissipation channels 5221 and the third upper heat dissipation channels 5222 is preferably 12. Correspondingly, the number of the lower heat dissipation channels 531 is selected to be 6 or 12.
As shown in fig. 13 and 17, the inner end of the first upper heat dissipation channel 521 (the second upper heat dissipation channel 5221 and the third upper heat dissipation channel 5222 are identical) has a circular arc shape, the radius of the circular arc tip thereof is Rc', and the outer end of the lower heat dissipation channel 531 also has a circular arc shape, the radius of the circular arc tip thereof is Rc. Preferred Rc > Rc'.
In the upper package plate 52, in the same first upper heat dissipation channel 521, the tracks of all the through holes 523 form an arc shape with the same point as the center O1, and the central angle α of two adjacent through holes 523 takes a value of 10 ° to 15 °. In this embodiment, the central angle α =12 ° corresponding to two adjacent through holes 523 in the same first upper heat dissipation channel 521.
In the lower package plate 53, the inner and outer sides of the lower heat dissipation channel 531 are both arc-shaped, the corresponding circle center of the inner side is Oa, the radius thereof is Ra, the corresponding circle center of the outer side is Ob, and the radius thereof is Rb. All the lower heat dissipation channels 531 form a whole in a surrounding manner, so that the inner side edges of all the lower heat dissipation channels 531 correspond to the center Oa to form a circular track with the center O of the lower package plate 53 as the center and Rin as the radius; all the lower heat dissipation channels 531 are formed integrally in a surrounding manner, so that the outer sides of all the lower heat dissipation channels 531 form a circular track with the center O of the lower package plate 53 as the center and Rout as the radius corresponding to the center Ob.
In the upper package plate 52, taking the first upper heat dissipation channel 521 as an example, the shape and corresponding trace of the inner and outer sides of the upper package plate are consistent with the corresponding trace of the lower heat dissipation channel 531, and will not be described in detail herein.
In the lower package plate 53, the inner edge of each lower heat dissipation channel 531 forms a circular track with the center O of the lower package plate 53 as the center and Ro as the radius. And the inner edge of the inner side of one of the lower heat dissipation channels 531 is connected with the inner edge of the outer side of the other lower heat dissipation channel 531 at the inner side thereof to form a sharp angle, and the inner edge of the outer side thereof is connected with the inner edge of the inner side of the third lower heat dissipation channel 531 at the outer side thereof to form a sharp angle.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
The invention is described above with reference to the accompanying drawings, which are illustrative, and it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other fields without modification.
Claims (10)
1. The utility model provides an embedded wireless battery charging outfit of desktop, includes the casing and is located circuit board and the wireless module of charging in the casing, the casing embedding desktop, the circuit board with the wireless module of charging is connected, just the circuit board with power electricity in the desktop is connected, its characterized in that, the wireless module of charging includes the charging coil and is located the last encapsulation board and the lower encapsulation board of both sides about the charging coil:
the upper and lower surface of going up the encapsulation board all is equipped with heat dissipation channel, the upper surface of encapsulation board is equipped with down heat dissipation channel down, go up heat dissipation channel with heat dissipation channel is radial arc passageway down, and the air convection through arc passageway realizes charging coil thermal circulation and giving off.
2. The desktop-embedded wireless charging device of claim 1, wherein the upper heat dissipation channel and the lower heat dissipation channel are both narrow-inside and wide-outside grooves.
3. The desktop-embedded wireless charging device according to claim 1, wherein the upper heat dissipation channel includes a first upper heat dissipation channel located on an upper surface of the upper package board and a second upper heat dissipation channel located on a lower surface of the upper package board, the first upper heat dissipation channel is provided with a through hole penetrating downwards, and arc-shaped rotation directions of the first upper heat dissipation channel and the second upper heat dissipation channel are the same.
4. The desktop-embedded wireless charging device of claim 3, wherein the upper heat dissipation channel further comprises a third upper heat dissipation channel located on the lower surface of the upper packaging plate, and the third upper heat dissipation channel is a radial arc channel, and the rotation direction of the third upper heat dissipation channel is opposite to the rotation direction of the second upper heat dissipation channel.
5. The desktop-embedded wireless charging device according to claim 1, wherein the upper packaging plate is a ring shape with a circular hole in the middle, the inner end of the upper heat dissipation channel extends to the periphery of the circular hole, and the outer end of the upper heat dissipation channel penetrates to the peripheral edge of the upper packaging plate.
6. The desktop-embedded wireless charging device of claim 1, wherein the inner ends of the lower heat dissipation channels are in communication with each other, and the outer ends are located inside the edge of the lower package plate.
7. The desktop-embedded wireless charging device according to claim 1, wherein the charging coil comprises an inner coil and an outer coil, the outer coil surrounds the inner coil, an outer end interface of the inner coil is located between two interfaces of the outer coil, an inner end interface of the inner coil is directly connected with the circuit board, and the outer end interface of the inner coil and the two interfaces of the outer coil are both connected with the circuit board through wiring portions.
8. The desktop-embedded wireless charging device of claim 7, wherein the wiring portion comprises a wiring fixed portion and a wiring movable portion:
the two interfaces of the inner coil and the two interfaces of the outer coil are both fixed on the wiring fixing part;
the wiring movable part comprises a movable base and a movable driving lever, the movable driving lever rotates around a movable shaft, a first contact and a second contact are arranged on the movable base, a gap is formed between the first contact and the second contact, and the width of the second contact is not smaller than the distance between an outer end interface of the inner coil and an outer coil interface close to the outer end interface of the inner coil.
9. The desktop-embedded wireless charging device of claim 1, wherein the housing is oval, the circuit board is oblong and adapted to the shape of the housing, and the charging module is located in the middle of the circuit board.
10. The desktop-embedded wireless charging device of claim 1, wherein a fastener is disposed at a lower end of the housing, and the housing is fixed in the desktop through the fastener.
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| CN202011540628.2A CN112636479B (en) | 2020-12-23 | 2020-12-23 | A desktop embedded wireless charging device |
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| CN202011540628.2A CN112636479B (en) | 2020-12-23 | 2020-12-23 | A desktop embedded wireless charging device |
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| CN112636479B CN112636479B (en) | 2021-09-07 |
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| CN112636479B (en) | 2021-09-07 |
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