CN205304413U

CN205304413U - Wireless receiving terminal that charges

Info

Publication number: CN205304413U
Application number: CN201521009688.6U
Authority: CN
Inventors: 蔚晓东; 刘志坚
Original assignee: Meg Magnetoelectric Technology (zhuhai) Co Ltd
Current assignee: Meg Magnetoelectric Technology (zhuhai) Co Ltd
Priority date: 2015-12-07
Filing date: 2015-12-07
Publication date: 2016-06-08
Anticipated expiration: 2025-12-07

Abstract

The utility model discloses a wireless receiving terminal that charges, be non -circular receiving coil and set up the magnetism shielding piece in the receiving coil below, its characterized in that including the conductor cross section: at least one recess has been seted up on the magnetism shielding piece, receiving coil's inside lead turns over a setting and installs in the recess at surface and this inside lead of receiving coil, the structure of this product and the thickness that manufacturing process can make the coil reduce the thickness of one deck copper foil than before, because the whole thickness of coil significantly reduces, and thickness that just so also can appropriate increase individual layer copper foil, and then increase the diameter of coil to reduce the internal resistance of coil, reduce the loss.

Description

A kind of wireless charging receiving terminal

Technical field

The utility model relates to wireless power transmission field, especially relates to wireless charging receiving terminal.

Background technology

Wireless charging receiving terminal is made up of receiving coil, magnetic shield sheet, electric power management circuit etc. conventionally, and wherein receiving coil receives the electric energy that transmitting terminal transmits because of electromagnetic induction, and magnetic shield sheet has increased the efficiency while reception, has reduced energy and has scattered and disappeared. Electric power management circuit is connected with receiving coil, and the electric energy of receiving coil is converted to can be for the electric current of the certain voltage of load, electric current or frequency.

Traditional receiving terminal coil uses major diameter sub-thread copper cash or bifilar copper cash conventionally, and its resistance is little, and charge efficiency is high, generate heat little, but its thickness is thicker, is unfavorable for the especially lightening trend of the mobile communication product such as mobile phone of electronic product.

Therefore, conventionally adopt at present Double side soft circuit board FPC to replace above-mentioned coil, although FPC can reduce the thickness of whole coil, its AC resistance increases; FPC still cannot solve lead-out wire in addition increases the thickness problem of receiving terminal, due to the reason of technique, in the time manufacturing coil, conventionally first process planar coil and outside lead in FPC one side, process inner lead-out wire at the another side of FPC, and then offer through hole on FPC plate, make to realize and being electrically connected between inner lead-out wire and planar coil; The manufacturing process of this coil is not only wasted a large amount of Copper Foils, has increased cost, and the coil thickness thickness that comprises 2 layers of Copper Foil of manufacturing and the thickness of one deck FPC substrate, is subject to the restriction of integral thickness, and the thickness of Copper Foil is also smaller, so Coil resistance increases.

Summary of the invention

For the problems referred to above, the utility model provides that a kind of coil integral thickness is little, Copper Foil relative thickness is larger, the radio reception end that internal resistance is low.

The utility model for the technical scheme that its technical problem of solution adopts is:

A kind of wireless charging receiving terminal, comprise that conductor cross-section is non-circular receiving coil and the magnetic shield sheet that is arranged on receiving coil below, it is characterized in that: on described magnetic shield sheet, offer at least one groove, surface and this inside lead that the inside lead turnover of described receiving coil is arranged on receiving coil are installed in groove.

As the further improvement of such scheme, directly or be installed in groove by bending, the groove that inside and outside lead-out wire is installed is same groove or different grooves to the outer lead-out wire of described receiving coil.

As the further improvement of such scheme, at least one side of described magnetic shield sheet is covered with diaphragm and/or fin.

The beneficial effects of the utility model are: wireless charging receiving terminal of the present utility model, its coil adopts one side FPC to make coil, and the inside lead of coil is drawn in the same face turnover of coil, and offer groove on magnetic shield sheet, the inside lead of turnover is arranged in groove, this structure and technique can make the Thickness Ratio of coil originally reduce the thickness of one deck Copper Foil, because the integral thickness of coil greatly reduces, the thickness of increase individual layer Copper Foil that so also just can be suitable, and then the diameter of increase coil, thereby reduce the internal resistance of coil, reduce the wastage.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described. Obviously, described accompanying drawing is a part of embodiment of the present utility model, instead of whole embodiment, and those skilled in the art is not paying under the prerequisite of creative work, other designs and the accompanying drawing that can also obtain according to these accompanying drawings:

Fig. 1 is the decomposing schematic representation of the utility model wireless charging receiving terminal;

Fig. 2 is the utility model wireless charging receiving terminal structural representation;

Fig. 3 is the floor map of the utility model receiving coil one lead-out wire when untreated;

Fig. 4 is the floor map of the utility model receiving coil two lead-out wires when untreated;

Fig. 5 is the utility model receiving coil lead-out wire floor map after treatment.

Detailed description of the invention

Below with reference to embodiment and accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is clearly and completely described, to understand fully the purpose of this utility model, feature and effect. Obviously; described embodiment is a part of embodiment of the present utility model, instead of whole embodiment, based on embodiment of the present utility model; other embodiment that those skilled in the art obtains under the prerequisite of not paying creative work, all belong to the scope that the utility model is protected.

See figures.1.and.2, a kind of wireless charging receiving terminal, comprise that conductor cross-section is non-circular receiving coil 1 and the magnetic shield sheet 2 that is arranged on receiving coil below, on described magnetic shield sheet 2, offer groove 3, surface and this inside lead 5 that inside lead 5 turnovers of described receiving coil 1 are arranged on receiving coil 1 are installed in described groove 3.

As preferably, receiving coil 1 can adopt one side FPC coil, and the inside lead of coil is drawn in the same face turnover of coil, and offer groove on magnetic shield sheet, the inside lead of turnover is arranged in groove, this structure and technique can make the Thickness Ratio of coil originally reduce the thickness of one deck Copper Foil, because the integral thickness of coil greatly reduces, the thickness of increase individual layer Copper Foil that so also just can be suitable, and then the diameter of increase coil, thereby reduce the internal resistance of coil, reduce the wastage.

Its further groove 3 can have one, two or more, can run through or partly run through magnetic shield sheet 2, the outer lead-out wire of described receiving coil can directly or by bending be installed in groove, and the groove that inside and outside lead-out wire is installed is same groove or different grooves.

Further, the one side of described magnetic shield sheet or two sides are covered with diaphragm or fin 4, and diaphragm or fin can mix use, the wherein preferred PET film of diaphragm, the preferred graphite heat radiation fin of fin.

With further reference to Fig. 3, Fig. 4 and Fig. 5, the manufacturing step that the utility model wireless charging receiving terminal is made planar coil on one side FPC is:

The processing of A, receiving coil

A1, on one side flexible circuit board FPC, process planar coil and inside and outside lead-out wire, its China and foreign countries' lead-out wire is set around the outmost turns (as shown in Figure 3) of planar coil;

A2, cut three edges, limit that inside and outside lead-out wire is not connected with coil;

A3, the part that the inside lead after cutting is contacted with coil main body are carried out insulation processing;

A4, the inside lead after insulation processing is turned down to the surface to coil, the angle of bending can be arbitrarily angled as required, preferably 90 ° or 45 °, outer lead-out wire is also carried out to bending simultaneously, and make the outlet direction of inside and outside lead-out wire consistent;

B, adopt traditional explained hereafter surface to offer the magnetic shield sheet of at least one groove;

C, receiving coil is arranged on magnetic shield sheet, make receiving coil turnover inside lead and or outer lead-out wire be positioned at the groove of magnetic shield sheet.

In actual production process, also can on magnetic shield sheet, set up the step that diaphragm or fin are set up in one side or two sides, the correspondence position of this diaphragm or fin offers the second groove.

Further, described magnetic shield sheet adopts soft magnetic materials manufacture, as metal soft magnetic material, compound soft magnetic material, and preferably ferrite.

Further, the cross section of described receiving coil solid wire is non-circular, preferably rectangle or approximate rectangular.

Further, described receiving coil is single or multiple lift or multi cord parallel organization.

Further, the mode of the processing of described receiving coil is machining or electrochemistry processing; Wherein, described machining comprise adopt distorted loop coiling or adopt that metal forming is carried out, line cutting, laser cutting or stamping-out; Described electrochemistry processing comprises the processing mode of the single or multiple lift circuit that adopts FPC technique or adopts the mode of electroplating.

In addition, receiving coil also can adopt the conventional machining process of other current material to make, and is cutting bending, and in steps A 2, cut three edges, limit that inside and outside lead-out wire is not connected with coil as adopted sheet metal to be machined into after coil is also fixed; Also not necessarily to have, if adopt other materials processing planar coil and inside and outside lead-out wire, after processing, can directly turn down lead-out wire, so just without the step cutting.

Described above-described embodiment is that foregoing of the present utility model is further described, but this should be interpreted as to the scope of the above-mentioned theme of the utility model only limits to above-described embodiment, all technology realizing based on foregoing all belong to scope of the present utility model.

Claims

1. a wireless charging receiving terminal, comprise that conductor cross-section is non-circular receiving coil and the magnetic shield sheet that is arranged on receiving coil below, it is characterized in that: on described magnetic shield sheet, offer at least one groove, surface and this inside lead that the inside lead turnover of described receiving coil is arranged on receiving coil are installed in groove.

2. a kind of wireless charging receiving terminal according to claim 1, is characterized in that: directly or be installed in groove by bending, the groove that inside and outside lead-out wire is installed is same groove or different grooves for the outer lead-out wire of described receiving coil.

3. a kind of wireless charging receiving terminal according to claim 1, is characterized in that: at least one side of described magnetic shield sheet is covered with diaphragm and/or fin.