CN211530856U - Wireless back shell subassembly and electronic equipment that charges - Google Patents

Abstract

The utility model discloses a wireless dorsal scale subassembly and electronic equipment that charges, wherein, the wireless dorsal scale subassembly that charges includes the dorsal scale, wireless charging coil, first pad, the second pad, first FPC transmission line and second FPC transmission line, wireless charging coil passes through the surface that laser radium carving technology takes shape in the dorsal scale, wireless charging coil has the outer port that is located the inboard interior port of coil and is located the coil outside, through first FPC transmission line electric connection between interior port and the first pad, through second FPC transmission line electric connection between outer port and the second pad. The wireless charging back shell component disclosed by the utility model has the advantages that the wireless charging coil is formed on the surface of the back shell through the laser etching process, so that the heat dissipation effect is good; compared with the existing wireless charging module, the wireless charging module can remove the TEP protective film part, so that the overall thickness of the wireless charging module is reduced; in addition, through setting up first FPC transmission line and second FPC transmission line, can promote the flexibility that wireless charging coil and mainboard are connected.

Description

Wireless back shell subassembly and electronic equipment that charges

[ technical field ] A method for producing a semiconductor device

The utility model relates to a wireless technical field that charges especially relates to a wireless dorsal scale subassembly that charges and an electronic equipment who adopts this wireless dorsal scale subassembly that charges.

[ background of the invention ]

The wireless charging technology, also called non-contact inductive charging, is a technology in which energy is transmitted to an electric device by a power supply device based on an inductive coupling principle, and the electric device charges a battery with the energy. Currently, the wireless charging technology mainly has the following three forms: magnetic induction, magnetic resonance, and radio wave, and three wireless charging standards unions derived from these technologies include Qi, A4WP, and PMA, which are based on magnetic induction technology, and A4WP, which is based on magnetic resonance technology. Currently A4WP and PMA have been incorporated as Air Fuel Alliance (AFA), driving a unified wireless charging standard.

The wireless charging technology has wide application in the fields of electronic equipment, such as mobile phones, tablet computers and the like due to the characteristics of convenient operation, low equipment wear and the like, the wireless charging function of modern electronic equipment is basically realized in an independent wireless charging module form, and the wireless charging module comprises a PET (polyethylene terephthalate) layer, a wireless charging coil layer, a nanocrystalline layer, a graphite sheet layer and a glue layer.

As electronic equipment manufacturers continuously pursue ultra-thinning and light weight, the space reserved for the wireless charging module is less and less, which makes the overall size of the conventional wireless charging module challenging.

[ Utility model ] content

One of the purposes of the utility model is to disclose a wireless dorsal scale subassembly that charges that wireless charging module thickness is little, heat-sinking capability is good and with the mainboard connection flexibility is high. The utility model discloses a second purpose discloses an electronic equipment, and this electronic equipment adopts foretell wireless dorsal scale subassembly that charges.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the utility model provides a wireless back of body shell subassembly that charges, includes back of the body shell, wireless charging coil, first pad, second pad, first FPC transmission line and second FPC transmission line, wireless charging coil pass through laser radium carving technology take shape in the surface of back of the body shell, wireless charging coil has the interior port that is located the coil inboard and the outer port that is located the coil outside, interior port with pass through between the first pad first FPC transmission line electric connection, outer port with pass through between the second pad second FPC transmission line electric connection.

As an improvement, the back shell is a ceramic glass back shell.

As an improvement mode, the wireless back shell subassembly that charges still includes the magnetism isolation layer, the magnetism isolation layer paste in the back shell covers wireless charging coil, first pad, the second pad, first FPC transmission line and the second FPC transmission line.

As an improvement, the magnetic isolation layer is a ferrite layer or a nanocrystalline layer.

As an improvement mode, wireless back shell subassembly that charges still including pasting locate the magnetism isolation layer deviates from the graphite flake layer of wireless charging coil one side.

The second purpose of the utility model is realized by adopting the following technical scheme:

an electronic equipment, electronic equipment adopts foretell wireless dorsal scale subassembly that charges.

Compared with the prior art, the embodiment of the utility model, the wireless charging coil is formed on the surface of the back shell through the laser etching process, the heat generated by the wireless charging coil during operation can be directly distributed out through the back shell, and the heat dissipation capability is improved; compared with the existing wireless charging module, the design mode can remove the TEP protective film part, so that the overall thickness of the wireless charging module is reduced; in addition, the inner port through setting up wireless charging coil is connected with first pad through first FPC transmission line, and the outer port of wireless charging coil passes through the second transmission line and is connected with the second pad, for current with the mode of transmission line and the direct laser radium carving of pad on the dorsal scale, can promote the flexibility of wireless charging coil and mainboard connection.

[ description of the drawings ]

Fig. 1 is the embodiment of the utility model discloses an explosion schematic diagram of wireless back shell subassembly that charges is disclosed.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1, an embodiment of the present invention discloses a wireless charging back shell assembly 100, including back shell 10, wireless charging coil 20, first pad 30, second pad 40, first FPC transmission line 50 and second FPC transmission line 60, wireless charging coil 20 is formed on the surface of back shell 10 through laser engraving process, wireless charging coil 20 has inner port 21 located inside the coil and outer port 22 located outside the coil, pass through first FPC transmission line 50 electric connection between inner port 21 and first pad 30, pass through second FPC transmission line 60 electric connection between outer port 22 and second pad 40.

In this embodiment, the wireless charging coil 20 is formed on the surface of the back shell 10 through a laser etching process, and heat generated by the wireless charging coil 20 during operation can be directly dissipated through the back shell 10, so that the heat dissipation capability is improved; compared with the existing wireless charging module, the design mode can remove the TEP protective film part, so that the overall thickness of the wireless charging module is reduced; in addition, interior port 21 through setting up wireless charging coil 20 is connected with first pad 30 through first FPC transmission line 50, the outer port 22 of wireless charging coil 20 is connected with second pad 40 through second FPC transmission line 60, for current with the direct laser radium carving mode on the backshell of transmission line and pad, can promote the flexibility of wireless charging coil 20 and mainboard connection, specifically, can match the position of mainboard thimble (the existing thimble that generally adopts on the mainboard is connected with the pad of wireless charging coil) through walking of first FPC transmission line 50 and second FPC transmission line 60, and need not to adjust the position of wireless charging coil 20.

As a modification of this embodiment, the back shell 10 is a ceramic glass back shell. Through setting up dorsal scale 10 for ceramic glass dorsal scale, utilize the better advantage of ceramic glass heat dissipation, can further improve the radiating effect of wireless dorsal scale subassembly 100 that charges. It should be noted that the back shell 10 is not limited to a ceramic glass back shell, but may also be a ceramic back shell, a glass back shell, or some plastic back shells with good heat dissipation performance, such as an epoxy resin back shell, and the like, and may be specifically determined according to actual design requirements.

As a modified form of this embodiment, the wireless charging back shell assembly 100 further includes a magnetic isolation layer 70, and the magnetic isolation layer 70 is adhered to the back shell 20 and covers the wireless charging coil 20, the first pad 34, the second pad 40, the first FPC transmission line 50, and the second FPC transmission line 60. For example, the magnetic isolation layer 70 may be set to the size of the dotted line frame M as shown in fig. 1 to cover the above components, in this embodiment, the magnetic isolation layer 70 is fixed to the back shell 10 in a pasting manner, the process is simple, the yield of the finished product is improved, moreover, the fixing manner facilitates the adjustment of the magnetic isolation layer 70, and the adjustment of the self-inductance value of the wireless charging coil 20 may be realized by adjusting the material of the magnetic isolation layer 70 at a later stage without adjusting the whole wireless charging back shell assembly 100 in order to adjust the self-inductance value of the wireless charging coil 20.

As a modification of the present embodiment, the magnetic isolation layer 70 is a ferrite layer or a nanocrystalline layer.

As an improvement of this embodiment, the wireless charging back shell assembly 100 further includes a graphite sheet layer 80 attached to the magnetic isolation layer on a side away from the wireless charging coil. In this embodiment, adopt the mode of pasting to be fixed in dorsal scale 10 through setting up graphite lamella 80, simple process has improved off-the-shelf yield, and in addition, this fixed mode is convenient for graphite lamella 80's adjustment, and the later stage can realize the radiating adjustment of wireless charging coil 20 through adjusting graphite lamella 80, and is convenient simple.

The embodiment of the utility model discloses an embodiment still discloses an electronic equipment, and electronic equipment adopts foretell wireless dorsal scale subassembly 100 that charges.

The electronic equipment is a wireless charging base or a mobile phone or a tablet computer.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (6)

1. The utility model provides a wireless dorsal scale subassembly that charges, its characterized in that, includes dorsal scale, wireless charging coil, first pad, second pad, first FPC transmission line and second FPC transmission line, wireless charging coil pass through laser radium carving technology form in the surface of dorsal scale, wireless charging coil has the interior port that is located the coil inboard and the outer port that is located the coil outside, interior port with pass through between the first pad first FPC transmission line electric connection, outer port with pass through between the second pad second FPC transmission line electric connection.

2. The wireless charging dorsal shell assembly of claim 1, wherein the dorsal shell is a ceramic glass dorsal shell.

3. The wireless charging backshell assembly of claim 1, further comprising a magnetic isolation layer, the magnetic isolation layer affixed to the backshell and covering the wireless charging coil, the first pad, the second pad, the first FPC transmission line, and the second FPC transmission line.

4. The wireless charging dorsal shell assembly of claim 3, wherein the magnetic isolation layer is a ferrite layer or a nanocrystalline layer.

5. The wireless charging dorsal shell assembly according to claim 3, further comprising a graphite sheet attached to the magnetic isolation layer on a side facing away from the wireless charging coil.

6. An electronic device, wherein the electronic device employs the wireless charging back case assembly of any one of claims 1-5.

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