CN109278572B - Wireless charger and wireless charging system - Google Patents
Wireless charger and wireless charging system Download PDFInfo
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- CN109278572B CN109278572B CN201811198355.0A CN201811198355A CN109278572B CN 109278572 B CN109278572 B CN 109278572B CN 201811198355 A CN201811198355 A CN 201811198355A CN 109278572 B CN109278572 B CN 109278572B
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- 238000005096 rolling process Methods 0.000 abstract description 17
- 238000007789 sealing Methods 0.000 description 15
- 229910000859 α-Fe Inorganic materials 0.000 description 10
- 238000001816 cooling Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
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- 239000004020 conductor Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
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- 230000017525 heat dissipation Effects 0.000 description 1
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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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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Abstract
The invention relates to a wireless charger and a wireless charging system, wherein the wireless charger comprises a shell, a magnetic shielding layer, a coil and an excitation layer, the coil and the excitation layer are arranged in the shell, the shell comprises a top shell and a base, the top shell and the base are supported and matched to form an annular closed cavity for accommodating the coil and the excitation layer, the base is provided with a base middle supporting part and a base annular supporting part, the base middle supporting part and the base annular supporting part are arranged at intervals in the horizontal direction, the base annular supporting part is positioned at the periphery of the base middle supporting part, the annular closed cavity is arranged between the base middle supporting part and the base annular supporting part, and the top shell is provided with a top shell middle supporting surface and a top shell annular supporting surface which. The problem of among the prior art wireless charger anti rolling strength low, with high costs is solved.
Description
Technical Field
The invention relates to a wireless charger and a wireless charging system.
Background
The wireless charging system of the electric automobile is a system for converting alternating current into direct current to charge the electric automobile in a non-contact magnetic coupling mode. The chinese patent that the bulletin number of authorizing is CN207458744U, and the bulletin date of authorizing is 2018.06.05 discloses a wireless charging coil and wireless charging system, and this wireless charging coil is including fixed magnetism line dish, coil, magnetic substrate and shielding layer in proper order, it includes insulating substrate and sheet metal ferrite to gather the magnetic line dish, be equipped with wire winding groove and the interval guide slot that the interval set up on the insulating substrate, the coil coiling is in wire winding groove, in the sheet metal ferrite embedding interval guide slot. Ferrite plates and lower surface plates are sequentially placed on the upper surface of the bottom plate of the magnetic substrate, and the periphery of the bottom plate of the magnetic substrate is made into a lip edge structure so that the lip edge structure integrally forms a groove for installing and placing the ferrite plates. Above-mentioned insulating substrate, magnetic substrate and lower surface plate are equivalent to top shell, backplate and the drain pan of wireless charger respectively, and the base of wireless charger is constituteed to backplate and drain pan, and the casing of wireless charger is constituteed to drain pan, backplate and top shell, and ferrite plate is equivalent to the excitation layer of wireless charger, and each ferrite of constituteing ferrite plate is the magnetic path promptly. On one hand, in order to ensure the protection effect on the excitation layer, the lip edge structure of the guard plate and the bottom shell must be pressed tightly, a gap is reserved in the middle part, the contact area between the guard plate and the bottom shell is small, the guard plate or the coil and the like can be crushed if a vehicle mistakenly runs over the wireless charger, and the rolling resistance strength of the wireless charger is difficult to ensure; on the other hand, if guarantee that drain pan, excitation layer and backplate mid portion all compress tightly, and guarantee the protection to the excitation layer, then need guarantee the machining precision of a side of drain pan, a side of backplate and two sides on excitation layer, increased the processing cost of wireless charger to a certain extent.
Disclosure of Invention
The invention aims to provide a wireless charger, which aims to solve the problems of low rolling strength and high cost of the wireless charger in the prior art; it is also an object of the present invention to provide a wireless charging system that solves the above problems.
In order to achieve the purpose, the technical scheme of the wireless charger is as follows:
the wireless charger comprises a shell, a magnetic shielding layer, a coil and an excitation layer, wherein the coil and the excitation layer are arranged in the shell, the shell comprises a top shell and a base, the top shell and the base are supported and matched to form an annular closed cavity for accommodating the coil and the excitation layer, a base middle supporting part and a base annular supporting part are arranged on the base at intervals in the horizontal direction, the base middle supporting part is arranged at the outer periphery of the base middle supporting part, the annular closed cavity is arranged between the base middle supporting part and the base annular supporting part, and a top shell middle supporting surface and a top shell annular supporting surface which are matched with the base middle supporting part and the base annular supporting part in a supporting mode are arranged.
The invention has the beneficial effects that: the top shell and the base support are matched to form an annular closed cavity, the coil and the excitation layer are both positioned in the annular closed cavity, even if a vehicle drives through the wireless charger by mistake, the supporting area between the top shell and the base is increased by the supporting matching of the middle supporting surface of the top shell and the middle supporting part of the base and the supporting matching of the annular supporting surface of the top shell and the annular supporting part of the base, so that the middle parts and the peripheral annular parts of the top shell and the base can bear certain pressure, and the rolling resistance strength of the shell is increased; in addition, the top shell middle supporting surface and the top shell annular supporting surface can be arranged in the same plane, the base middle supporting portion and the base annular supporting portion can also be arranged in the same plane, and only the processing precision of the top shell and the base upper supporting surface is required to be ensured. The problem of among the prior art wireless charger anti rolling strength low, with high costs is solved.
For the assembly of making things convenient for wireless charger, in this scheme be formed with the annular holding tank that holds coil and excitation layer between base intermediate strut portion and the base annular supporting part, be equipped with the annular shutoff face of shutoff annular holding tank on the top shell, annular holding tank and annular shutoff face enclose into annular closed chamber, and annular shutoff face, top shell intermediate strut face and top shell annular strut face are in the coplanar. When the coil and the excitation layer are installed, the notch of the annular accommodating groove of the base is upward to be consistent with the using state of the wireless charger, then the coil and the excitation layer are assembled, and then the top shell is covered on the annular accommodating groove, so that the assembly of the wireless charger is facilitated; compare on the top shell with the annular holding tank setting in addition, can avoid having installed coil and excitation layer after with the casing upset, cause coil and excitation layer to shift, influence wireless charger's use.
In order to save cost, the excitation layer comprises a plurality of magnetic blocks, and the magnetic blocks are annularly arranged in the winding direction of a conducting wire on a coil along the magnetic blocks. Compared with the ferrite plate adopted in the prior art, the magnet blocks arranged in the annular shape save excitation layer materials, so that the cost of the wireless charger is saved.
In order to increase the rolling resistance of the shell, in the scheme, an annular accommodating groove for accommodating the coil and the magnetic block is formed between the base middle supporting part and the base annular supporting part, an annular plugging surface for plugging the annular accommodating groove is arranged on the top shell, the annular accommodating groove and the annular plugging surface are enclosed to form an annular closed cavity, the base middle supporting part is provided with at least two supporting blocks extending into the annular accommodating groove, the supporting blocks are arranged along the winding direction of the upper conductor on the coil, and a magnetic block positioning groove for the magnetic block to be inserted and matched with the magnetic block in a positioning manner is formed between the adjacent supporting blocks. The supporting area of the base middle supporting part is increased through the supporting block extending into the annular accommodating groove, so that the rolling resistance of the shell is increased.
For better positioning the magnetic block, in the scheme, a supporting boss which is arranged along the winding direction of a lead on a coil and is matched with the coil in a supporting manner is arranged in the annular accommodating groove, and the side surface of the adjacent supporting boss is matched with the magnetic block in a positioning manner.
In order to further increase the rolling strength of the shell, the side face of the base is a base slope face, and the side face of the top shell is a top shell slope face matched with the base slope face. The setting of base slope and top shell slope can effectively avoid the stress concentration when the casing top is compressed, increases the anti rolling performance of casing.
In order to improve the assembly efficiency of the wireless charger, the magnetic shielding layer is fixed on the bottom surface of one side of the base, back to the top shell, through bonding. The magnetic shielding layer is fixed with the base through bonding, and compared with the magnetic shielding layer fixed through a fastener, the magnetic shielding layer has higher assembly efficiency.
The technical scheme of the wireless charging system is as follows:
the wireless charging system comprises a transmitter and a receiver, at least one of the transmitter and the receiver is a wireless charger, the wireless charger comprises a shell, a magnetic shielding layer, a coil and an excitation layer, the coil and the excitation layer are arranged in the shell, the shell comprises a top shell and a base, the top shell and the base are supported and matched to form an annular closed cavity for accommodating the coil and the excitation layer, a base middle supporting part and a base annular supporting part are arranged on the base at intervals in the horizontal direction, the base middle supporting part is arranged at the periphery of the base middle supporting part, the annular closed cavity is arranged between the base middle supporting part and the base annular supporting part, and the top shell is provided with a top shell middle supporting surface and a top shell annular supporting surface which are respectively supported and matched with the base middle supporting.
The invention has the beneficial effects that: the top shell and the base support are matched to form an annular closed cavity, the coil and the excitation layer are both positioned in the annular closed cavity, even if a vehicle drives through the wireless charger by mistake, the supporting area between the top shell and the base is increased by the supporting matching of the middle supporting surface of the top shell and the middle supporting part of the base and the supporting matching of the annular supporting surface of the top shell and the annular supporting part of the base, so that the middle parts and the peripheral annular parts of the top shell and the base can bear certain pressure, and the rolling resistance strength of the shell is increased; in addition, the top shell middle supporting surface and the top shell annular supporting surface can be arranged in the same plane, the base middle supporting portion and the base annular supporting portion can also be arranged in the same plane, and only the processing precision of the top shell and the base upper supporting surface is required to be ensured. The problem of among the prior art wireless charger anti rolling strength low, with high costs is solved.
For the assembly of making things convenient for wireless charger, in this scheme be formed with the annular holding tank that holds coil and excitation layer between base intermediate strut portion and the base annular supporting part, be equipped with the annular shutoff face of shutoff annular holding tank on the top shell, annular holding tank and annular shutoff face enclose into annular closed chamber, and annular shutoff face, top shell intermediate strut face and top shell annular strut face are in the coplanar. When the coil and the excitation layer are installed, the notch of the annular accommodating groove of the base is upward to be consistent with the using state of the wireless charger, then the coil and the excitation layer are assembled, and then the top shell is covered on the annular accommodating groove, so that the assembly of the wireless charger is facilitated; compare on the top shell with the annular holding tank setting in addition, can avoid having installed coil and excitation layer after with the casing upset, cause coil and excitation layer to shift, influence wireless charger's use.
In order to save cost, the excitation layer comprises a plurality of magnetic blocks, and the magnetic blocks are annularly arranged in the winding direction of a conducting wire on a coil along the magnetic blocks. Compared with the ferrite plate adopted in the prior art, the magnet blocks arranged in the annular shape save excitation layer materials, so that the cost of the wireless charger is saved.
In order to increase the rolling resistance of the shell, in the scheme, an annular accommodating groove for accommodating the coil and the magnetic block is formed between the base middle supporting part and the base annular supporting part, an annular plugging surface for plugging the annular accommodating groove is arranged on the top shell, the annular accommodating groove and the annular plugging surface are enclosed to form an annular closed cavity, the base middle supporting part is provided with at least two supporting blocks extending into the annular accommodating groove, the supporting blocks are arranged along the winding direction of the upper conductor on the coil, and a magnetic block positioning groove for the magnetic block to be inserted and matched with the magnetic block in a positioning manner is formed between the adjacent supporting blocks. The supporting area of the base middle supporting part is increased through the supporting block extending into the annular accommodating groove, so that the rolling resistance of the shell is increased.
For better positioning the magnetic block, in the scheme, a supporting boss which is arranged along the winding direction of a lead on a coil and is matched with the coil in a supporting manner is arranged in the annular accommodating groove, and the side surface of the adjacent supporting boss is matched with the magnetic block in a positioning manner.
In order to further increase the rolling strength of the shell, the side face of the base is a base slope face, and the side face of the top shell is a top shell slope face matched with the base slope face. The setting of base slope and top shell slope can effectively avoid the stress concentration when the casing top is compressed, increases the anti rolling performance of casing.
In order to improve the assembly efficiency of the wireless charger, the magnetic shielding layer is fixed on the bottom surface of one side of the base, back to the top shell, through bonding. The magnetic shielding layer is fixed with the base through bonding, and compared with the magnetic shielding layer fixed through a fastener, the magnetic shielding layer has higher assembly efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a wireless charger according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 3 is a schematic view of the structure of FIG. 1 with the top cover removed;
FIG. 4 is a schematic structural view of the base of FIG. 1;
FIG. 5 is a schematic view of the structure of FIG. 4 from another perspective;
FIG. 6 is a schematic structural view of the top case of FIG. 1;
FIG. 7 is a schematic view of the structure of FIG. 6 from another perspective;
fig. 8 is a schematic structural view of the top case of fig. 7 when a gasket is mounted thereon.
In the figure: 1-base, 2-top shell, 3-magnetic shielding plate, 4-adaptor connector, 5-pneumatic connector, 6-coil, 7-cooling pipeline, 8-annular protrusion, 9-magnetic block, 10-partition plate, 11-magnetic shielding plate groove, 12-stepped hole, 13-wire passing hole, 14-coil accommodating part, 15-magnetic block accommodating part, 16-mounting hole, 17-sealing ring, 18-threaded hole, 19-annular groove, 20-top shell slope surface, 21-base slope surface, 22-top shell bottom surface, 23-base middle supporting part, 24-base annular supporting part, 25-supporting block and 26-supporting boss.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the embodiment of the wireless charger of the present invention, as shown in fig. 1 to 8, the wireless charger includes a housing, a magnetic shielding layer, and a coil 6 and an excitation layer disposed in the housing, and the excitation layer in the embodiment is composed of eight magnetic blocks 9. The casing includes base 1 and top shell 2, has the base intermediate strut portion 23 of arranging along the inside and outside interval of horizontal direction on the base 1 and is in base intermediate strut portion 23 outlying base annular strut portion 24, is formed with the annular holding tank that is used for holding coil 6 and magnetic path 9 between base intermediate strut portion 23 and the base annular strut portion 24, and coil 6 places in the coil holding portion 14 of annular holding tank, and magnetic path 9 places in the magnetic path holding portion 15 of annular holding tank. Have respectively on the top shell 2 with base intermediate strut portion 23, base annular strut portion 24 support complex top shell intermediate strut face and be in a top shell intermediate strut face outlying top shell annular strut face, still have the annular shutoff face of shutoff annular holding tank on the top shell 2, and annular shutoff face, top shell intermediate strut face and top shell annular strut face are in the coplanar and constitute top shell bottom surface 22 of top shell 2, base 1 supports the cooperation with top shell 2 and makes annular holding tank and annular shutoff face enclose into annular closed chamber. In other embodiments, an annular accommodating groove can be arranged on the top shell, and an annular plugging surface is arranged on the base; the annular holding tank can be arranged on the top shell and the base, and the annular holding tank on the top shell and the annular holding tank on the base are enclosed to form an annular closed cavity.
The base 1 and the top shell 2 are supported and matched to form an annular closed cavity, the coil 6 and the magnetic block 9 are both positioned in the annular closed cavity, even if a vehicle drives from the wireless charger by mistake, the supporting area between the top shell 2 and the base 1 is increased by the supporting and matching of the middle supporting surface of the top shell and the middle supporting part 23 of the base and the supporting and matching of the annular supporting surface of the top shell and the annular supporting part 24 of the base, so that the middle parts and the peripheral annular parts of the top shell 2 and the base 1 can bear certain pressure, and the rolling resistance of the shell is increased; in addition, the top shell middle supporting surface and the top shell annular supporting surface can be arranged in the same plane, the supporting surfaces of the base middle supporting portion 23 and the base annular supporting portion 24 can also be arranged in the same plane, and only the processing precision of the top shell and the supporting surfaces on the base are required to be ensured. The problem of among the prior art wireless charger anti rolling strength low, with high costs is solved.
As shown in fig. 3 to 5, each magnetic block 9 is annularly arranged along the winding direction of the wire on the coil 6, and compared with the ferrite plate adopted in the prior art, the magnetic blocks 9 annularly arranged form an excitation layer, so that the excitation layer material is saved, and the cost of the wireless charger is saved. The base middle supporting part 23 is provided with supporting blocks 25 extending into the annular accommodating groove, each supporting block 25 is arranged along the winding direction of the lead on the coil 6, and a magnetic block positioning groove for inserting the magnetic block 9 and positioning and matching with the magnetic block 9 is formed between the adjacent supporting blocks 25. Seven supporting blocks 25 are provided in the present embodiment, so that eight magnetic block positioning grooves into which the magnetic blocks 9 are inserted are formed, and the magnetic blocks 9 correspond to the magnetic block positioning grooves one by one. The support block 25 extending into the annular receiving groove increases the support surface area of the base intermediate support portion 23, thereby increasing the crush resistance of the housing. In addition, the annular accommodating groove is internally provided with supporting bosses 26 which are arranged along the winding direction of the lead on the coil 6 and are matched with the coil in a supporting way, the side surfaces of the adjacent supporting bosses 26 are matched with the magnetic blocks 9 in a positioning way, the supporting bosses 26 in the embodiment correspond to the supporting blocks 25 one by one, and the side surfaces of the same side of the corresponding supporting bosses 26 and the corresponding supporting blocks 25 are used for positioning the same magnetic block 9. The coil 6 is pressed tightly above the magnet block 9. In other embodiments, the support block may not be provided; the support boss may not be provided. In order to ensure the installation stability of the coil, a plurality of spacers 10 are arranged at intervals in the coil housing 14 of the base 1, and the adjacent spacers 10 compact the wires constituting the coil 6, thereby stably fixing the coil 6 in the coil housing 14.
As shown in fig. 5, a rectangular magnetic shielding plate groove 11 is formed in the bottom of the base 1, the magnetic shielding plate 3 is fixed in the magnetic shielding plate groove 11 in an adhering manner, the magnetic shielding plate 3 is a magnetic shielding layer of the wireless charger in this embodiment, and the lower bottom surface of the magnetic shielding plate 3 and the lower bottom surface of the base 1 are in the same plane. The magnetic shield panel 3 is fixed to the base 1 by adhesion, and has higher assembling efficiency than that by fixing by a fastener. Base 1 in this embodiment both plays the effect of backplate, has the effect of drain pan again, compares with prior art and has saved the assembly of backplate with the drain pan to the assembly efficiency of wireless charger has been improved. In other embodiments, only one of the magnetic blocks can be arranged, and the magnetic block is an annular magnetic block which is arranged concentrically with the coil; the coil can also be in other shapes such as a rectangle, and magnetic blocks are arranged in the winding direction of the coil according to the requirement, and the number and the arrangement mode of the magnetic blocks are set according to the requirement; the base can comprise a guard plate and a bottom shell, wherein the guard plate and the top shell are enclosed to form an annular closed cavity, and the upper side surface of the bottom shell is in supporting fit with the lower side surface of the guard plate; the magnetic shielding plate and the base can also be fixedly connected through a threaded fastener.
As shown in fig. 4 to 7, in order to ensure the waterproof performance of the casing, the annular support portion 24 of the base is provided with an annular protrusion 8, and the bottom surface 22 of the top casing is correspondingly provided with an annular groove 19 which is used for accommodating the annular protrusion 8 and is in sealing fit with the annular protrusion 8, so that the waterproof performance of the casing is improved; in addition, even if water is positioned between the annular groove 19 and the annular bulge 8, the liquid level of the water is higher than the height of the annular bulge 8, and the water can enter the shell, so that the waterproof performance of the shell is improved. Annular protrusion and annular groove's processing, top shell and base's convenient assembling have solved the problem that wireless charger's casing waterproof mode processing technology is complicated among the prior art, high in production cost. It should be noted that, in order to increase the waterproof performance of the casing, the supporting surface of the base middle supporting portion 23 and the supporting surface of the base annular supporting portion 24 are in sealing fit with the top casing bottom surface 22.
The base 1 is also provided with a wire passing hole 13 for the wire inlet end and the wire outlet end of the coil 6 to pass through, the central line of the wire passing hole 13 is arranged in parallel with the annular supporting part 24 of the base, and the adapter connector 4 is hermetically assembled in the wire passing hole 13. When the coil 6 is installed, the wire inlet end and the wire outlet end of the coil 6 are installed at the wire passing hole 13, and then the adaptor connector 4 with the waterproof and anti-loosening functions is installed, so that the waterproof performance of the wire passing hole 13 is guaranteed. The base 1 is provided with a mounting hole 16 for mounting the wireless charger to the ground or test equipment, the mounting hole 16 is arranged on the outer side of the annular supporting part of the base, and the mounting hole 16 in the embodiment is arranged on the outer side of the annular supporting part of the base, so that water is prevented from entering the shell from the mounting hole. In other embodiments, the base can be fixed on the ground or the test equipment in a bonding or welding mode without arranging a mounting hole; the wire passing hole can be directly penetrated out of the wire passing hole by the wire inlet end and the wire outlet end of the coil without arranging a switching connector; the wire passing hole can also be enclosed by the openings on the base and the top shell; the central line of the wire passing hole can also be arranged perpendicular to the sealing surface of the base and the bottom surface of the top shell; two wire through holes can be arranged on the top shell, or one wire through hole can be respectively arranged on the base and the top shell.
As shown in fig. 8, in order to increase the sealing performance between the base 1 and the top shell 2, a sealing ring 17 is arranged in the annular groove 19, and when the base 1 is in sealing fit with the top shell 2, the sealing ring 17 is compressed between the bottom of the annular groove 19 and the top of the annular protrusion 8. In other embodiments, no sealing ring may be arranged between the annular groove and the annular protrusion; sealant can be coated between the annular bulge and the annular groove or a sealing element is arranged to increase the sealing property of the shell; or the sealing ring is arranged between the side wall of the annular groove and the side wall of the annular bulge; sealing elements can also be arranged between the top of the annular bulge and the bottom of the annular groove and between the side wall of the annular groove and the side wall of the annular bulge. Be equipped with shoulder hole 12 on the base 1, be equipped with screw hole 18 on the top shell 2, the screw will correspond shoulder hole 12 and screw hole 18 fixed connection in order to be with top shell 2 and top shell 2 fixed connection. Wherein the stepped hole 12 comprises a large diameter section accommodating a nut of the screw, and an aperture of the large diameter section is disposed facing away from the base annular support portion, avoiding the screw from protruding the bottom of the magnetic shield plate groove 11. The magnetic shielding plate 3 is fixedly bonded on the bottom surface of one side of the base, which is back to the annular supporting part of the base, and is blocked at the orifice of the stepped hole 12, so that water is prevented from entering the base 1 through the stepped hole 12, and the waterproofness of the wireless charger is ensured. It should be noted that, the orifice of the stepped hole 12 on the annular support portion of the base is arranged outside the annular protrusion 8, so as to prevent water from entering the casing through the stepped hole 12, and ensure the waterproof performance of the casing. In other embodiments the top shell and the base may be secured by adhesive; the hole opening of the stepped hole can also be arranged outside the magnetic shielding plate, namely the nut of the screw is exposed outside the base, and the sealing element can be penetrated on the screw at the moment, so that the waterproof and dustproof performance of the shell is improved; the hole of the stepped hole on the annular supporting part of the base can also be positioned at the inner side of the annular bulge.
In consideration of the great influence on the heat dissipation when the housing has good sealing performance, as shown in fig. 3, in the present embodiment, a cooling duct 7 is provided at the position of the coil 6 in the housing 1, and compressed air is introduced into the cooling duct 7 to cool and dissipate heat by the compressed air. The cooling duct 7 is located in the upper space of the coil 6, and the top case 2 is provided with pneumatic connectors 5 respectively communicating with an inlet and an outlet of the cooling duct 7. When the wireless charger needs to be cooled, cold air is made by using an air compressor, the cold air is introduced into the cooling pipeline 7 through one of the pneumatic connectors 5 so as to take away heat in the wireless charger, and then the cold air is taken out of the shell through the other pneumatic connector 5, so that a forced air duct is formed. In other embodiments, the wireless charger may be cooled and dissipated by a liquid cooling method. To increase the crush resistance of the housing, the base 1 in this embodiment has a base ramp surface 21 on the side and the top housing 2 has a top housing ramp surface 20 on the side that matches the base ramp surface 21. The base 1 and the top shell 2 are respectively integrally injection-molded by plastic steel materials, so that the structural strength of the shell is ensured. In other embodiments, the side surface of the base can be a vertical surface, and the side surface of the top shell can also be a vertical surface.
The specific assembling process of the wireless charger of the invention comprises the following steps: firstly, placing a magnetic block 9 in a magnetic block accommodating part 15 and a coil 6 in a coil accommodating part 14; then, screws are arranged at the bottom of the base 1 in a penetrating manner to fix the base 1 and the top shell 2 together; and finally, coating a layer of sealant in the magnetic shielding plate groove 11 of the base 1, and then adhering the magnetic shielding plate 3 to complete the assembly of the wireless charger. The wireless charger is pressed by a conventional automobile tire with the specification of P225/75R15 or equivalent load at the pressure of (5000 +/-250) N and the speed of (8 +/-2) km/h, and the inflation pressure of the tire is (220 +/-10) kPa. The wireless charger was optionally placed on a flat ground in the normal manner before the wheel was pressed from the wireless charger, with no significant movement of the wireless charger under test.
In the specific embodiment of the wireless charging system of the present invention, the wireless charging system includes the transmitter and the receiver, and the structures of the transmitter and the receiver are the same as those of the wireless charger described in the specific embodiment of the wireless charger, and are not described again. In other embodiments, only the transmitter in the wireless charging system has the same structure as the wireless charger described in the above specific embodiment of the wireless charger; the structure of the wireless charger in the wireless charging system may be the same as that of the wireless charger in the above-described embodiment of the wireless charger.
Claims (4)
1. The wireless charger comprises a shell, a magnetic shielding layer, a coil and an excitation layer, wherein the coil and the excitation layer are arranged in the shell, and the shell comprises a top shell and a base and is characterized in that the base and the top shell are respectively integrally formed by injection molding of a plastic steel material, the top shell and the base are supported and matched to enclose an annular closed cavity for accommodating the coil and the excitation layer, the base is provided with a base middle supporting part and a base annular supporting part, the base middle supporting part and the base annular supporting part are arranged at intervals in the horizontal direction, the base annular closed cavity is arranged between the base middle supporting part and the base annular supporting part, and the top shell is provided with a top shell middle supporting surface and a top shell annular supporting surface which are respectively supported and matched with the base middle; an annular accommodating groove for accommodating the coil and the excitation layer is formed between the middle supporting part of the base and the annular supporting part of the base, an annular plugging surface for plugging the annular accommodating groove is arranged on the top shell, the annular accommodating groove and the annular plugging surface enclose the annular closed cavity, and the annular plugging surface, the middle supporting surface of the top shell and the annular supporting surface of the top shell are positioned in the same plane and form the bottom surface of the top shell; the supporting surface of the middle supporting part of the base and the supporting surface of the annular supporting part of the base are positioned in the same plane; the excitation layer comprises a plurality of magnetic blocks, and the magnetic blocks are annularly arranged along the winding direction of a lead on the coil; the middle supporting part of the base is provided with at least two supporting blocks extending into the annular accommodating groove, the supporting blocks are arranged along the winding direction of a lead on a coil, a magnetic block positioning groove for inserting the magnetic block and positioning and matching the magnetic block is formed between every two adjacent supporting blocks, and the middle supporting part of the base is of a cylindrical boss structure with a notch formed by the magnetic block positioning groove; the side of the base is a base slope, and the side of the top shell is a top shell slope matched with the base slope.
2. The wireless charger of claim 1, wherein the annular receiving groove is provided with supporting bosses which are arranged along the winding direction of the conducting wire on the coil and are matched with the coil supports, and the side surfaces of the adjacent supporting bosses are matched with the magnetic blocks in a positioning way.
3. The wireless charger according to claim 1 or 2, wherein the magnetic shield layer is fixed to a bottom surface of the base on a side facing away from the top case by adhesion.
4. A wireless charging system comprising a transmitter and a receiver, wherein at least one of the transmitter and the receiver is a wireless charger as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198355.0A CN109278572B (en) | 2018-10-15 | 2018-10-15 | Wireless charger and wireless charging system |
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| CN201811198355.0A CN109278572B (en) | 2018-10-15 | 2018-10-15 | Wireless charger and wireless charging system |
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| CN109278572B true CN109278572B (en) | 2021-05-14 |
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| US20220328232A1 (en) * | 2019-10-29 | 2022-10-13 | Skc Co., Ltd. | Wireless charging device and moving means including same |
| CN113078721B (en) * | 2021-06-08 | 2021-08-10 | 北京中成康富科技股份有限公司 | Wireless charging base and wireless charging device |
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| CN105098363A (en) * | 2014-05-21 | 2015-11-25 | Tdk株式会社 | Antenna device and manufacturing method thereof |
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| CN207458744U (en) * | 2017-11-30 | 2018-06-05 | 浙江万安亿创电子科技有限公司 | A kind of Wireless charging coil and wireless charging system |
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| CN203706838U (en) * | 2014-01-24 | 2014-07-09 | 广西电网公司电力科学研究院 | Electromagnetic coupling coil used for wireless power transmission |
| US9698632B2 (en) * | 2014-05-09 | 2017-07-04 | Otter Products, Llc | Wireless battery charger and charge-receiving device |
| CN204706859U (en) * | 2015-06-19 | 2015-10-14 | 武汉雷泰电力新技术有限公司 | Cable is crossed street and is prevented rolling protection box |
| CN108667151B (en) * | 2018-05-21 | 2020-09-01 | 重庆大学 | Concave-convex magnetic core-based wireless energy transmitting mechanism and parameter design method thereof |
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| CN105098363A (en) * | 2014-05-21 | 2015-11-25 | Tdk株式会社 | Antenna device and manufacturing method thereof |
| CN204089353U (en) * | 2014-09-26 | 2015-01-07 | 国家电网公司 | Noncontact power transmitting device and non-contact electric energy transmitting coil, receiving coil |
| CN105702441A (en) * | 2014-12-16 | 2016-06-22 | 西门子公司 | Coil unit for a transmission arrangement for inductive transmission of energy |
| CN207458744U (en) * | 2017-11-30 | 2018-06-05 | 浙江万安亿创电子科技有限公司 | A kind of Wireless charging coil and wireless charging system |
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Effective date of registration: 20190730 Address after: 461000 Central Plains Electric Valley New Energy Industrial Park, Xuchang City, Henan Province (south of Shangde Road east of Weiwu Avenue) Applicant after: Xuji Electric Power Co., Ltd. Applicant after: Xuji Electric Co., Ltd. Applicant after: Xuji Group Co., Ltd. Applicant after: State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 461000 Central Plains Electric Valley New Energy Industrial Park, Xuchang City, Henan Province (south of Shangde Road east of Weiwu Avenue) Applicant before: Xuji Electric Power Co., Ltd. Applicant before: Xuji Electric Co., Ltd. Applicant before: Xuji Group Co., Ltd. Applicant before: State Grid Corporation of China |
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