CN201590480U - Handheld terminal and power supply battery - Google Patents

An embodiment of the utility model discloses a handheld terminal and a power supply battery, which relate to the wireless communication field and are used for improving properties of a near field communication (NFC) coil antenna in the handheld terminal. The outer surface of the power supply battery is attached with ferrite, an NFC antenna coil is mounted on a terminal casing, and when the terminal casing and the handheld terminal are combined integrally, the NFC antenna coil is opposite to the ferrite. By adopting the handheld terminal and the power supply battery, the properties of the NFC coil antenna in the handheld terminal are improved effectively.

Handheld terminal and supplying cell

Technical field

The utility model relates to wireless communication field, relates in particular to a kind of handheld terminal and supplying cell.

Background technology

Short-range communication (NFC) technology is derived from non-contact radio-frequency identification (RFID) technology, all be a kind of non-contact automatic identification technology in essence, its basic principle is to utilize space electromagnetic induction or electromagnetic propagation to communicate, to reach the purpose of automatic identifying object.NFC becomes the mainstream technology of mobile non-contact application gradually, exchange to read at business card on the common application such as placard, gate inhibition's exhibition, personnel tracking management, Food Inspection are false proof, stored value card credit card all to hold out broad prospects.

The NFC aerial coil relies on magnetic field to be coupled and transmits energy, swap data and synchronizing information.Present way generally is that the NFC aerial coil is attached on the parts of handheld terminal in the mode of pasting.

For example because spatial limitation, with the NFC aerial coil be attached to can with the contacted cell phone rear cover of battery of mobile phone on.When using mobile phone card-brushing, the magnetic field that produces can form eddy current, reduce antenna efficiency on the battery metal shell, therefore need between NFC aerial coil and battery, add one deck ferrite, make the magnetic line of force pass through ferrite as far as possible, with of the absorption of minimizing battery, thereby reduce the loss of magnetic field on the battery metal shell to magnetic field energy.

Present conventional way is the inner surface that NFC aerial coil, ferrite is attached to successively cell phone rear cover, be that the NFC aerial coil is close to the back interior surface, ferrite is attached to again on the NFC aerial coil, make when cell phone rear cover is combined on the mobile phone, ferrite contacts with battery of mobile phone, and then reaches the purpose that ferrite minimizing battery absorbs magnetic field energy.

In realizing process of the present utility model, the inventor finds to exist in the prior art following technical problem:

At present NFC aerial coil, ferrite are attached to successively the mounting means of case surface handheld terminal, all or part of clad battery, still have the more magnetic line of force and leak into battery surface, must use, increase the thickness of mobile phone than large tracts of land and thicker ferrite.Lightening along with handheld terminal, miniaturization, market is to the end fitting outward appearance, and integration, reliability etc. have proposed more requirement, and present way is difficult to satisfy the user to product appearance, the demand of durability.

The utility model content

The utility model embodiment provides a kind of handheld terminal and supplying cell, is used for improving the performance of handheld terminal NFC antenna.

A kind of handheld terminal, this handheld terminal comprises supplying cell and terminal enclosure, the outer surface of described supplying cell is with ferrite;

The NFC aerial coil is installed on the described terminal enclosure, and when described terminal enclosure and described handheld terminal were integrated, described NFC aerial coil was relative with described ferrite.

A kind of supplying cell, the outer surface of described supplying cell be with ferrite, and when this supplying cell was installed on the handheld terminal, described ferrite was relative with NFC antenna on the terminal enclosure that is installed in described handheld terminal.

In the utility model, the outer surface of supplying cell is equipped with the NFC aerial coil with ferrite on the terminal enclosure, and when terminal enclosure and handheld terminal were integrated, the NFC aerial coil was relative with ferrite.Owing in the utility model ferrite is attached to the outer surface of supplying cell, compare with the mode that in the prior art NFC aerial coil, ferrite is attached to successively the inner surface of outer cover of handheld terminal, ferrite is tighter with battery parcel ground, reduce to leak into the magnetic field energy on battery metal surface effectively, improved the performance of NFC antenna in the handheld terminal.

Description of drawings

The structural representation of the handheld terminal that Fig. 1 provides for the utility model;

The structural representation of the supplying cell that Fig. 2 provides for the utility model;

Fig. 3 is for being equipped with the terminal enclosure schematic diagram of NFC aerial coil in the utility model;

Another is equipped with the terminal enclosure schematic diagram of NFC aerial coil to Fig. 4 in the utility model.

Embodiment

In order to improve the performance of NFC aerial coil in the handheld terminal, the utility model provides a kind of handheld terminal, in this handheld terminal, the outer surface of supplying cell is with ferrite, the NFC aerial coil is installed on the terminal enclosure, when terminal enclosure and handheld terminal were integrated, the NFC aerial coil was relative with ferrite, made ferrite reduce the absorption of battery to the energy in NFC magnetic field that aerial coil produces.

The outer surface of supplying cell with ferritic concrete mode can be: ferrite sticks on the metal shell of supplying cell; Perhaps, ferrite sticks on other materials that are attached on the metal shell, for example is attached on the bag paper on the metal shell.

The concrete mode that the NFC aerial coil is installed on the terminal enclosure can be: the NFC aerial coil is installed in the inner surface or shell interlayer of terminal enclosure.

When the operating frequency of NFC aerial coil was in the frequency range of 1-20 megahertz (MHz), ferritic relative permeability can be 20-200.

Can on the part or all of area of each outer surface, have ferrite with ferrite on each outer surface of supplying cell or part outer surface.

In the utility model, when handheld terminal was mobile phone, terminal enclosure was a cell phone rear cover.The terminal that handheld terminal can also use supplying cell and the NFC aerial coil can be installed on shell for PDA, MP3 etc.Terminal enclosure is handheld terminal, all cover or part covers the shell of supplying cell.

Referring to Fig. 2, the utility model also provides a kind of supplying cell 20, and the outer surface of supplying cell is with ferrite 21, and when this supplying cell 20 was installed on the handheld terminal, ferrite 21 was relative with NFC antenna on the terminal enclosure that is installed in described handheld terminal.

The outer surface of supplying cell with ferritic concrete mode can be: ferrite sticks on the metal shell of supplying cell; Perhaps, ferrite sticks on other materials that are attached on the metal shell, for example is attached on the bag paper on the metal shell.

In the frequency range of 1-20 megahertz, ferritic relative permeability is 20-200 in the operating frequency of NFC antenna.

Can on the part or all of area of each outer surface, have ferrite with ferrite on each outer surface of supplying cell or part outer surface.

When handheld terminal was mobile phone, terminal enclosure was a cell phone rear cover.The terminal that handheld terminal can also use supplying cell and the NFC aerial coil can be installed on shell for PDA, MP3 etc.Terminal enclosure is handheld terminal, all cover or part covers the shell of supplying cell.

Below the utility model is specifically described:

The utility model provides a kind of NFC aerial coil and ferritic mounting means of handheld terminal, and wherein the NFC aerial coil is installed on the terminal enclosure, and this aerial coil covers on the battery wholly or in part, and Ferrite Material is installed on the battery case.

Wherein, the NFC aerial coil is installed in the inner surface or shell interlayer of terminal enclosure.

Wherein, Ferrite Material is attached to and comprises on the battery case and directly stick on the battery metal shell or also have other materials between ferrite and the metal shell, and each surface of battery can all or part of stickup Ferrite Material.

Wherein, Ferrite Material is the higher magnetic conduction substance of magnetic permeability, the thickness homogeneous.For reaching isolation effect preferably, the relative permeability u ' of Ferrite Material is 20-200 in the 1-20MHz frequency range.

Ferrite Material sticks on battery surface, except with the adjacent one side of NFC aerial coil, other 5 faces can PASTE SPECIAL, and each face can all or part ofly be pasted.

To sum up, the beneficial effects of the utility model comprise:

The handheld terminal that the utility model provides comprises supplying cell and terminal enclosure, and the outer surface of supplying cell is with ferrite; The NFC aerial coil is installed on the terminal enclosure, and when terminal enclosure and handheld terminal were integrated, the NFC aerial coil was relative with ferrite.Owing in the utility model ferrite is attached to the outer surface of supplying cell, compare with the mode that in the prior art NFC aerial coil, ferrite is attached to successively the inner surface of outer cover of handheld terminal, ferrite is tighter with battery parcel ground, reduce to leak into the magnetic field energy on battery metal surface effectively, improved the performance of NFC antenna in the handheld terminal.

And, in the utility model, can all have ferrite at each face of supplying cell, under the situation that does not reduce the ferrite effect, can suitably reduce ferritic thickness, make handheld terminal more lightening.

Ferrite Material is attached on the battery, increases stickup, can effectively reduce the loss of magnetic field on the battery metal shell, thereby improve antenna performance battery surface.And the ferrite area only can increase seldom, and cost is also controlled.No matter the handheld terminal that the utility model provides in the test of NFC antenna performance, is mode card or reader mode, can increase the distance of swiping the card, and reduces the blind area, has satisfied the requirement of swiping the card in the small construction space.

Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.