CN212392125U - Wireless charging coil, wireless charging transmitting device, wireless charging receiving device, wireless charging device and mobile terminal - Google Patents
Wireless charging coil, wireless charging transmitting device, wireless charging receiving device, wireless charging device and mobile terminal Download PDFInfo
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- CN212392125U CN212392125U CN202020873889.5U CN202020873889U CN212392125U CN 212392125 U CN212392125 U CN 212392125U CN 202020873889 U CN202020873889 U CN 202020873889U CN 212392125 U CN212392125 U CN 212392125U
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Abstract
The utility model discloses a wireless charging coil, which comprises a plurality of coils formed by winding a wire spirally from inside to outside along the circumferential direction; the wireless charging coil is provided with a plurality of thinned wire areas and non-thinned wire areas which are sequentially and alternately formed along the winding direction of the wires; the width of the thinned wire region is equal to the width of the non-thinned wire region. According to this disclosed wireless charging coil, not only can reduce the impedance value of coil, can also ensure the inductance value of coil, improved wireless efficiency of charging, reduced the loss of coil.
Description
Technical Field
The utility model relates to a wireless technical field that charges especially relates to wireless charging coil, wireless emitter that charges, wireless receiving arrangement, wireless charging device and mobile terminal that charge.
Background
With the increasing popularity of electronic products, more and more electronic products employ wireless charging devices. The wireless charging device comprises a wireless charging coil. The wireless charging coil is used for inducing an electromagnetic signal sent by the sending end, generating alternating current and transmitting the alternating current to the rectifying circuit board; the rectifying circuit board converts the alternating current into direct current to charge the equipment to be charged.
The winding method of the wireless charging coil is very many, for example, the winding method includes a winding type, an FPC type, a twisted wire type, a punching type, etc., and each of the winding methods can be divided into various types, for example, a single turn, a double turn, a multiple turn, etc. According to different winding modes of the coil, the performance of the wireless charging coil structure is different. Along with the popularization of wireless charging devices, a wireless charging coil structure with excellent performance is urgently needed.
SUMMERY OF THE UTILITY MODEL
For overcoming the problem that exists among the correlation technique, the utility model provides a wireless charging coil, wireless emitter that charges, wireless receiving arrangement that charges, wireless charging device and terminal equipment.
According to an embodiment of the present disclosure, a wireless charging coil comprises a plurality of coils formed by sequentially winding a conducting wire from inside to outside in a spiral shape along a circumferential direction; the wireless charging coil is provided with a plurality of thinned wire areas and non-thinned wire areas which are sequentially and alternately formed along the winding direction of the wires; the width of the thinned wire region is equal to the width of the non-thinned wire region.
In an embodiment of the present disclosure, the thinned lead regions are formed to be staggered from each other between two adjacent turns of the coil.
In an embodiment of the present disclosure, the lengths of the thinned wire region are sequentially increased at a fixed ratio or at a non-fixed ratio along the winding direction of the wire.
In an embodiment of the present disclosure, the thinned wire region includes a wire and an insulating layer; the non-thinned lead region comprises a lead and an insulating layer; the width of the conducting wires in the thinned conducting wire area is smaller than that of the conducting wires in the non-thinned conducting wire area.
In an embodiment of the present disclosure, the thinned wire region includes a first wire and a second wire; the widths of the first conducting wires and the second conducting wires in the thinned conducting wire area are smaller than the width of the conducting wires in the non-thinned conducting wire area.
In an embodiment of the present disclosure, a width of the first conductive line of the thinned conductive line region is the same as or different from a width of the second conductive line.
According to a second aspect of the embodiments of the present disclosure, there is provided a wireless charging transmission apparatus, including: an inverter circuit; and the wireless charging coil is connected with the output end of the inverter circuit and the wireless charging coil is the wireless charging coil.
In an embodiment of the present disclosure, the inverter circuit converts a direct current input by a direct current power supply into an alternating current, and supplies the alternating current to the wireless charging coil; and after receiving the alternating current, the wireless charging coil transmits the alternating current in an alternating magnetic field mode.
According to a third aspect of the embodiments of the present disclosure, there is provided a wireless charge receiving apparatus, including a rectifying circuit; and the wireless charging coil is connected with the input end of the rectifying circuit, and the wireless charging coil is the wireless charging coil.
In an embodiment of the present disclosure, the wireless charging coil receives an alternating current in an alternating magnetic field manner, and inputs the alternating current to the input end of the rectifying circuit; the rectifying circuit rectifies the received alternating current into direct current.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a wireless charging apparatus including: the wireless charging transmitting device as described above; and a wireless charge receiving apparatus as described above.
According to a fifth aspect of the embodiments of the present disclosure, there is provided a mobile terminal including: a rectifying circuit; the wireless charging coil is connected with the input end of the rectifying circuit and is the wireless charging coil; the wireless charging coil receives alternating current in an alternating magnetic field mode, the alternating current is input into the rectifying circuit, and the rectifying circuit rectifies the alternating current into direct current.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
through this wireless charging coil that this disclosure provided, along the winding direction of wire forms a plurality of thinning wire district, can reduce the impedance value of coil from this, the width that thins the wire district with the width that does not thinize the wire district is equal, can ensure the inductance value of coil from this. Therefore, the skin effect and the eddy current effect can be effectively reduced, the wireless charging efficiency is obviously improved, and the loss of the coil is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural view of a first coil layer of a wireless charging coil according to the related art.
Fig. 2 is a schematic view of the charge distribution of a wire in a wireless charging coil according to the prior art.
Figure 3 is a schematic structural diagram of a wireless charging coil according to an embodiment of the present disclosure.
Fig. 4 is an enlarged schematic structural view of a wireless charging coil according to an embodiment of the present disclosure.
Figure 5 is a schematic diagram of a charge distribution of a wire in a wireless charging coil, according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of coil widening in a thinned section of a wireless charging coil provided according to an embodiment of the present disclosure.
Fig. 7 is an enlarged structural schematic diagram of coil widening within a thinned section of a wireless charging coil provided in accordance with an embodiment of the present disclosure.
Fig. 8 is a schematic structural diagram of a wireless charging coil provided according to an embodiment of the present disclosure.
Fig. 9 is a flowchart of a winding method of a wireless charging coil according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic view of a structure of a wireless charging coil according to the related art. Fig. 2 is a schematic view of the charge distribution of a wire in a wireless charging coil according to the prior art.
As shown in fig. 1, the wireless charging coil in the prior art is formed by winding a wire 101. The insulating layer 102 is disposed outside the conductive wires 101 to prevent the conductive wires from being directly connected. The wireless charging coil comprises a plurality of coils which are formed by sequentially winding a conducting wire 101 from inside to outside in a spiral shape along the circumferential direction. The inner end of the wire 101 is wound as a first connection terminal 1011, and the outer end of the wire 101 is wound as a second connection terminal 1012. The first connection end 1011 is led out to the outside by a lead wire so as to be connected to the rectifier circuit board. The multi-turn wire coil has n turns, and n is an integer greater than or equal to 3. The wire 101 is a wire with a uniform radius, so that the width of any coil is equal.
When there is an alternating current or an alternating electromagnetic field in the wire 101, the current distribution inside the wire 101 is not uniform, the current is mainly concentrated on the outer surface of the wire 101, the closer to the surface of the wire 101, the higher the current density, and the smaller the current inside the wire 101. That is, as shown in fig. 2, a large amount of electric charge 121 is accumulated on the surface of the wire 101, and the electric charge is substantially zero in the inside 12 of the wire 101. As a result, the resistance of the wire 101 increases, resulting in an increase in power loss of the charging path of the wireless charging coil. This effect is known in the field of wireless charging coils as the skin effect.
The main reasons for the skin effect are analyzed as follows. In a high-frequency circuit, the current change rate is very large, and the state of uneven distribution is serious. The magnetic field generated in the wire by the high frequency current induces the largest electromotive force in the central region of the wire. The induced current is maximized at the center of the wire because the induced electromotive force generates an induced current in the closed circuit. Because the direction of the induced current is opposite to the original current direction, it forces the current to be confined only near the outer surface of the wire. The main reason for the skin effect is that the varying electromagnetic field generates a vortex electric field inside the conductor, which cancels out the original current.
As described above, in the conventional wireless charging coil, the width of each coil is the same, and the wireless charging coil is affected by the skin effect, a large amount of current is collected around each coil, and the internal current is small, so that the relative resistance of the wireless charging coil becomes large.
The disclosure provides a wireless charging coil winding method, a wireless charging coil structure, a wireless charging emitter, a wireless charging receiver, a wireless charging device and a terminal device. According to the wireless charging coil prepared by the wireless charging coil winding method, the inductance value of the wireless charging coil is guaranteed, meanwhile, the resistance can be effectively reduced, therefore, the wireless charging efficiency can be improved, and the loss of the wireless charging coil can be reduced. Because the resistance on the wireless charging coil has reduced, the power loss of wireless charging coil also can reduce, like electronic product such as cell-phone is carrying out wireless charging in-process, the complete machine generates heat and can reduce, and can further shorten charge duration.
The following describes in detail a wireless charging coil winding method, a wireless charging coil structure, a wireless charging transmitter, a wireless charging receiver, a wireless charging device, and a terminal device according to the present disclosure with reference to the drawings.
Figure 3 is a schematic structural diagram of a wireless charging coil according to an embodiment of the present disclosure. Fig. 4 is an enlarged schematic structural view of a wireless charging coil according to an embodiment of the present disclosure. Figure 5 is a schematic diagram of a charge distribution of a wire in a wireless charging coil, according to an embodiment of the present disclosure. Fig. 6 is a schematic structural diagram of coil widening in a thinned section of a wireless charging coil provided according to an embodiment of the present disclosure. Fig. 7 is an enlarged structural schematic diagram of coil widening within a thinned section of a wireless charging coil provided in accordance with an embodiment of the present disclosure. Fig. 8 is a schematic structural diagram of a wireless charging coil provided according to an embodiment of the present disclosure.
As shown in fig. 3 and 4, a wireless charging coil 10 according to an embodiment of the present disclosure includes a multi-turn coil formed by sequentially winding a conductive wire 101 from inside to outside in a spiral shape along a circumferential direction. The wireless charging coil 10 of the present disclosure may further include a magnetic conductive sheet (not shown) formed of ferrite or the like, and a multi-turn coil wound by the wire 101 may be mounted on the magnetic conductive sheet. The material of the wire 101 of the wireless charging coil may be a conventional alloy copper wire, and may also be an aluminum wire, and the disclosure is not limited thereto. The wires 101 may also be externally provided with an insulation layer 102 to avoid direct connection of the wires 101.
The beginning of the conductive line 101 is a first connection end 1011, and the ending of the conductive line 101 is a second connection end 1012. The first connection end 1011 is led out to the outside by a lead wire so as to be connected to the rectifier circuit board. The wire 101 may be wound to form a coil of n turns, n may be an integer greater than or equal to 3.
As shown in fig. 3, wireless charging coil 10 has a thinned wire region 103 and an un-thinned wire region 104. The thinned wire regions 103 and the non-thinned wire regions 104 alternate with each other in the coil structure according to the winding direction of the wire 101. That is, the coil structure of the first thinned wire region 103, the first non-thinned wire region 104, the second thinned wire region 103, the second non-thinned wire regions 104, … …, the nth thinned wire region 103, and the nth non-thinned wire region 104 is formed along the winding direction of the wire 101. The outermost end of the wire 101 is formed as a second connection terminal 1012.
As shown in fig. 3 and 4, the first thinned wire region 103 and the second thinned wire region 104 are formed to be offset, that is, the first thinned wire region 103 and the second thinned wire region 103 do not overlap; similarly, the second thinned wire region 103 and the third thinned wire region 103 are formed in a staggered manner, i.e., the second thinned wire region 103 and the third thinned wire region 103 do not overlap. In other words, the thinned lead regions 103 of adjacent coils are formed offset from each other.
The width of the thinned wire region 103 is not limited as long as it is smaller than the width of the wire 101, and may be 30% to 80% of the width of the wire 101, or may be half the width of the wire 101. The lengths of the plurality of thinned lead regions 103 may be the same or different. For example, as the wire 101 is wound outward, the length of the second thinned wire region 103 may be greater than the length of the first thinned wire region 103, the length of the third thinned wire region 103 may be greater than the length of the fourth thinned wire region 103, and so on. That is, the length of the thinned wire region 103 may be sequentially increased at a fixed ratio or a non-fixed ratio according to the number of windings. For example, the length of the thinned wire region 103 formed in the fourth coil may be 20% longer than the length of the thinned wire region 103 formed in the third coil, and the length of the thinned wire region 103 formed in the fifth coil may be 20% longer than the length of the thinned wire region 103 formed in the fourth coil. For another example, the length of the thinned wire region 103 formed in the fourth coil may be 20% longer than the length of the thinned wire region 103 formed in the third coil, and the length of the thinned wire region 103 formed in the fifth coil may be 30% longer than the length of the thinned wire region 103 formed in the fourth coil.
By thinning the wire area 103 in providing the wireless charging coil 10 as shown in fig. 3 and 4, the impedance of the wireless charging coil 10 can be reduced.
As shown in fig. 5, the number of charges in the wire 101 is significantly increased by providing the thinned wire region 103, as compared with the conventional case where charges are concentrated on the surface of the wire 101. That is, the internal current of the wire in the coil is obviously increased, so that the resistance of the wire is effectively reduced, and the resistance loss of the coil is effectively reduced.
However, in order to meet the requirements of charging efficiency and service life, the wireless charging coil also needs to have a sufficient inductance value. However, if the sectional area of the wireless charging coil 10 is reduced, the inductance of the wireless charging coil 10 may be reduced.
Therefore, as shown in fig. 6, 7 and 8, in order not to affect the inductance value of the wireless charging coil, the width of the conductive line 101 is increased in the thinned conductive line region 103, and the width of the conductive line 101 is made the same as the width of the non-thinned conductive line region. For example, if the width of the thinned wire region 103 is half of the width of the wire 101, a wire of the same width may be connected to the thinned wire region 103, so that the width of the thinned wire region 103 may be equal to the width of the non-thinned wire region 104. The width of the non-thinned wire region 104 is equal to the width of the wire 101.
For another example, when the width of the thinned wire region 103 is 60% of the width of the wire 101, a wire having a width of 40% of the width of the wire 101 may be further connected to the thinned wire region 103, whereby the width of the thinned wire region 103 may be equal to the width of the non-thinned wire region 104.
That is, the thinned conductor region 103 may include a first conductor and a second conductor, and the first conductor and the second conductor may be conductors having the same width or conductors having different widths. The width of each of the first conductive lines and the second conductive lines is smaller than that of the conductive lines in the non-thinned conductive line region. As long as the width of the thinned conductive line region 103 is the same as the width of the non-thinned conductive line region 104.
The method of widening the thinned wire region 103 is not limited to the case where one wire 101 is connected again, and a second wire may be connected again, or a third wire may be connected again. As another example, the width of the thinned conductor region 103 may also be increased by increasing the width of the insulating layer 102. For example, when the width of the conductive lines in the thinned conductive line region 103 is half the width of the non-thinned conductive line region 104, the width of the insulating layer 102 in the thinned conductive line region 103 may be increased so that the widths of the thinned conductive line region 103 and the non-thinned conductive line region 104 are the same.
Therefore, the widths of the thinned wire area 103 and the non-thinned wire area 104 are equal to the width of the wire 101, and the uniformity of the width of the wireless charging coil 10 is guaranteed. Thereby, the wireless charging coil 10 is secured to have a sufficient inductance value.
The utility model discloses a form at wireless charging coil and refine wire district 103, and refine wire district 103 and widen its width, from this, realized the evenly distributed of the inside electric charge of wireless charging coil, effectively reduced in the wireless charging coil because the resistance loss that skin effect and eddy current effect produced, can guarantee again simultaneously that the inductance value through whole coil does not change.
According to the wireless charging coil that this disclosure provided, when guaranteeing the inductance value of wireless charging coil, can effectively reduce resistance, can improve wireless efficiency of charging from this, and can reduce the loss on the wireless charging coil. Because the resistance on the wireless charging coil has reduced, the power loss of wireless charging coil also can reduce, like electronic product such as cell-phone is carrying out wireless charging in-process, the complete machine generates heat and can reduce, and can further shorten charge duration.
The embodiment of the present disclosure further provides a wireless charging transmitting device, including inverter circuit and the wireless charging coil that is connected with inverter circuit's output, dc power supply is connected to inverter circuit's input, changes the dc power of dc power supply input into the alternating current and supplies to wireless charging coil. After receiving the alternating current, the wireless charging coil transmits the alternating current in an alternating magnetic field mode.
According to the wireless emitter that charges that this disclosure provided, when guaranteeing the inductance value of wireless charging coil, can effectively reduce resistance, improve the efficiency of wireless charging, and can reduce the loss on the wireless charging coil, and can reduce the electronic equipment who uses this wireless emitter that charges's generating heat, and can further shorten the length of time of charging.
The embodiment of the disclosure further provides a wireless charging receiving device, including rectifier circuit and the wireless charging coil who is connected with rectifier circuit's input, the wireless charging coil receives the alternating current with alternating magnetic field mode to with this alternating current input to rectifier circuit's input, the rectifier circuit that receives the alternating current exports after rectifying the alternating current into the direct current.
According to the wireless charging receiving device provided by the disclosure, the inductance value of the wireless charging coil is guaranteed, meanwhile, the resistance can be effectively reduced, the wireless charging efficiency is improved, the loss on the wireless charging coil can be reduced, the heating of the electronic equipment applying the wireless charging receiving device can be reduced, and the charging time can be further shortened.
The embodiment of the present disclosure further provides a wireless charging device, which includes the above-mentioned wireless charging transmitting device and wireless charging receiving device. According to the wireless charging device provided by the disclosure, the inductance value of the wireless charging coil is ensured, the resistance can be effectively reduced, the wireless charging efficiency is improved, the loss on the wireless charging coil can be reduced, the heating of the electronic equipment using the wireless charging receiving device can be reduced, and the charging time can be further shortened.
The embodiment of the disclosure further provides a mobile terminal, including rectifier circuit and the wireless charging coil that is connected with rectifier circuit's input, the wireless charging coil receives the alternating current with alternating magnetic field mode to with alternating current input for rectifier circuit, the rectifier circuit that receives the alternating current is the direct current with the alternating current rectification.
According to the mobile terminal provided by the disclosure, when the wireless charging is carried out, the heat generation of the mobile terminal can be reduced, and the charging time period can be further shortened.
The following describes a winding method of a wireless charging coil in detail according to an embodiment of the present disclosure. Fig. 9 is a flowchart of a winding method of a wireless charging coil according to an embodiment of the present disclosure.
As shown in fig. 9, the winding method of a wireless charging coil according to an embodiment of the present disclosure includes step S10, step S20, and step S30. The steps S10 to S30 will be described below, respectively.
In step S10, the lead 101 is sequentially wound from inside to outside in a spiral shape along the circumferential direction to form a multi-turn coil, with the first connection end 1011 on the inner side as a starting point;
in step S20, after the second coil, partially thinning the wire so as to alternately form a plurality of thinned wire regions and non-thinned wire regions in turn along the winding direction of the wire;
in step S30, in the thinned wire region, the width of the wires 101 is widened so that the width of the thinned wire region is the same as the width of the non-thinned wire region.
In step S20, by partially thinning the wire 101, a coil structure in which thinned wire regions and non-thinned wire regions alternate with each other is formed. That is, the coil structure of the first thinned wire region, the first non-thinned wire region, the second non-thinned wire region, … …, the nth thinned wire region, and the nth non-thinned wire region is formed along the winding direction of the wire 101. The outermost end of the wire 101 is formed as a second connection terminal 1012.
When the wire 101 is partially thinned to form a thinned wire region, the first thinned wire region and the second thinned wire region are formed in a staggered manner, i.e., the first thinned wire region and the second thinned wire region do not overlap; in a similar way, the second thinned lead area and the third thinned lead area are formed in a staggered mode, namely, the second thinned lead area and the third thinned lead area are not overlapped. In other words, when the wire 101 is partially thinned so as to form thinned wire regions, the thinned wire regions of adjacent turns of the coil are spaced apart from each other.
The width of the thinned wire region is not limited as long as it is smaller than the width of the wire 101, and may be 30% to 80% of the width of the wire 101. The lengths of the thinned conductor regions may be the same or different. For example, as being wound outward, the length of the second thinned wire region may be greater than that of the first thinned wire region, the length of the third thinned wire region may be greater than that of the fourth thinned wire region, and so on. Namely, the length of the thinning wire area can be sequentially increased in a fixed proportion or a non-fixed proportion according to the number of winding turns. For example, the length of the thinned wire region formed in the fourth coil may be 20% longer than the length of the thinned wire region formed in the third coil, and the length of the thinned wire region formed in the fifth coil may be 20% longer than the length of the thinned wire region formed in the fourth coil. For another example, the length of the thinned wire region formed in the fourth coil may be 20% longer than the length of the thinned wire region formed in the third coil, and the length of the thinned wire region formed in the fifth coil may be 30% longer than the length of the thinned wire region formed in the fourth coil.
According to the wireless charging coil manufactured by the winding method of the wireless charging coil, the resistance value can be effectively reduced by forming the refined lead area, the resistance loss of the coil is effectively reduced, and the generated heat is reduced by equally dividing the current passing through the lead.
It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It is further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.
It should be further understood that in the following description, the concepts of "upper", "lower", "left", "right", "inner", "outer", "front", and "rear" are relative positional relationships that are given for convenience of description with respect to the illustrated embodiments, and may be changed in accordance with changes in the positional relationships.
The foregoing description of the implementation of the present disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosure. The embodiments were chosen and described in order to explain the principles of the disclosure and its practical application to enable one skilled in the art to utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated.
Claims (12)
1. A wireless charging coil is characterized by comprising a plurality of coils which are formed by sequentially winding a lead in a spiral shape from inside to outside along the circumferential direction;
the wireless charging coil is provided with a plurality of thinned wire areas and non-thinned wire areas which are sequentially and alternately formed along the winding direction of the wires;
the width of the thinned wire region is equal to the width of the non-thinned wire region.
2. The wireless charging coil of claim 1,
and the thinned lead areas are formed between two adjacent coils in a staggered mode.
3. The wireless charging coil of claim 1,
the lengths of the thinned wire regions are sequentially increased in a fixed proportion or a non-fixed proportion along the winding direction of the wire.
4. The wireless charging coil of claim 1,
the thinned lead wire area comprises a lead wire and an insulating layer;
the non-thinned lead region comprises a lead and an insulating layer;
the width of the conducting wires in the thinned conducting wire area is smaller than that of the conducting wires in the non-thinned conducting wire area.
5. The wireless charging coil of claim 1,
the thinned conducting wire area comprises a first conducting wire and a second conducting wire;
the widths of the first conducting wires and the second conducting wires in the thinned conducting wire area are smaller than the width of the conducting wires in the non-thinned conducting wire area.
6. The wireless charging coil of claim 5,
the width of the first conductive line of the thinned conductive line region is the same as or different from the width of the second conductive line.
7. A wireless charging transmitting device, comprising:
an inverter circuit; and
a wireless charging coil connected with the output end of the inverter circuit,
the wireless charging coil of any of claims 1-6.
8. The wireless charging transmission apparatus of claim 7,
the inverter circuit converts direct current input by a direct current power supply into alternating current and supplies the alternating current to the wireless charging coil;
and after receiving the alternating current, the wireless charging coil transmits the alternating current in an alternating magnetic field mode.
9. A wireless charging receiving device, comprising:
a rectifying circuit; and
a wireless charging coil connected with the input end of the rectifying circuit,
the wireless charging coil of any of claims 1-6.
10. The wireless charge receiving arrangement of claim 9,
the wireless charging coil receives alternating current in an alternating magnetic field mode and inputs the alternating current to the input end of the rectifying circuit;
the rectifying circuit rectifies the received alternating current into direct current.
11. A wireless charging device, comprising:
a wireless charging transmitting device according to claim 7 or 8; and
a wireless charge receiving device according to claim 9 or 10.
12. A mobile terminal, comprising:
a rectifying circuit; and
the wireless charging coil is connected with the input end of the rectifying circuit, and the wireless charging coil is the wireless charging coil according to any one of claims 1 to 6;
the wireless charging coil receives alternating current in an alternating magnetic field mode, the alternating current is input into the rectifying circuit, and the rectifying circuit rectifies the alternating current into direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020873889.5U CN212392125U (en) | 2020-05-22 | 2020-05-22 | Wireless charging coil, wireless charging transmitting device, wireless charging receiving device, wireless charging device and mobile terminal |
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| CN202020873889.5U CN212392125U (en) | 2020-05-22 | 2020-05-22 | Wireless charging coil, wireless charging transmitting device, wireless charging receiving device, wireless charging device and mobile terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364144A (en) * | 2021-07-05 | 2021-09-07 | 浙江晶日科技股份有限公司 | Coil, wireless charging transmitting and receiving device and mobile terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364144A (en) * | 2021-07-05 | 2021-09-07 | 浙江晶日科技股份有限公司 | Coil, wireless charging transmitting and receiving device and mobile terminal |
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