CN202004480U - Wireless induction charging device for portable communication equipment and portable electronic equipment with wireless induction charging device - Google Patents

Abstract

The utility model relates to a wireless induction charging device for portable communication equipment. The wireless induction charging device comprises a battery core, a wireless electric energy induction coil, a magnetic shielding material, and a two-in-one protection board for the battery core and a wireless induction charging circuit, wherein the battery core is used for storing electric energy; the wireless electric energy induction coil is used for collecting a magnetic field, generating the electric energy and outputting the electric energy to the two-in-one battery core protection board; the magnetic shielding material is positioned between the battery core and the wireless induction coil; and the two-in-one protection board is used for safely inputting the electric energy into the battery core. The wireless induction charging device solves the problem of making novel and old portable equipment all compatible with a wireless charging function and capable of using the wireless charging function, unifies a wireless induction charging interface, may not cause the great wasting of batteries, and can ensure that the batteries with the same capacity and volume can be universal for all the portable equipment.

Description

Wireless induction charging device for portable communication equipment and portable electronic equipment having same

technical field

The utility model relates to a wireless induction charging device, in particular to a wireless charging receiving device of a portable communication device and a portable electronic device having the same.

Background technique

At present, wireless transmission technology is mainly divided into three types: electromagnetic induction, radio wave, and electromagnetic resonance. Regardless of which technology, the cornerstone of its realization comes from the theory of electromagnetic induction discovered by Michael Faraday in 1831, and the concept of wireless power transmission established by Nikola Tesla in 1890. Wireless charging technology mainly uses electromagnetic technology to convert current into electromagnetic in the transmitter, and convert electromagnetic into rated voltage and current through a specific built-in chip receiver to charge electronic products.

Wireless charging technology has been mostly used in professional fields before, where products need to be sealed, such as underwater equipment and internal medical devices. However, in the face of the huge consumer equipment market, this market is still in its infancy. At present, due to the uneven technology and standards, and the different voltages in various countries, there are still compatibility issues among various products.

With the increase of household electronic devices and the all-round application of electronic products, getting rid of the shackles of cables has become a public demand. Wireless charging technology has grown along with the trend. Starting in 2010, wireless charging and wireless energy transmission products will no longer be a fantasy Talk, fairy tales. Various wireless chargers and electronic products using wireless charging will gradually emerge in various fields. Wireless charging technology can not only charge portable devices, but it will also be rapidly applied and developed in the fields of PMP/MP3 players, digital cameras and laptop lamps. According to the survey of market research institutes, by 2013, the global wireless charging potential market capacity will be close to 14 billion US dollars, and by 2014, the shipment of wireless charging equipment will reach 250 million units.

At present, many people do not have a comprehensive understanding of wireless inductive charging. In fact, the application of this principle requires at least two product designs, one is a wireless inductive charging transmitter, and the other is a wireless inductive charging receiver. At present, there are many design companies based on wireless inductive charging receiving devices. Although the principle is the same, the circuits designed are not uniform, and many technical indicators such as transmission efficiency, transmission frequency, transmission power, transmission distance, and static power consumption are also different.

The existing wireless induction receiving devices mainly include the following types:

(1) Use a leather case and a plastic back clip, which are equipped with a wireless induction copper coil and a power conversion circuit; because it uses a plastic case or a leather case, portable devices and other products must be customized, otherwise the interface will not be connected, and the volume will be too large and thick .

(2) Use a wireless induction copper coil, and the power conversion circuit is installed in the back shell of the portable device. However, its application in mobile and portable products requires custom mold opening. The development cycle is long, the mold cost is expensive, and the success rate is low. And certification trouble.

(3) Put the wireless induction copper coil and the power conversion circuit in a round or square box, and then output it with a wire after receiving it. It is still necessary to insert the wireless induction power into the tail of the portable device through the USB data cable It is better to directly connect the output power to the charging port on the tail of the portable device.

(4) Install the wireless induction copper coil and the power conversion circuit in the battery. The plastic soft bag polymer battery core used is not protected by a metal hard material shell, and the space utilization rate of the battery core can only reach 70% in the current market. This practice greatly reduces the effective use space of the battery, resulting in a greatly shortened effective use time of the portable device. At the same time, because the battery is directly charged, the portable device cannot correctly display the charging status, and the portable device is used to manage battery charging management, protection, and shutdown. At the same time, there is also the danger that the battery of portable devices may swell or even explode due to long-term unsaturated charging or overcharging due to the absence of a metal shell to protect the battery core.

To sum up, there are various wireless energy induction receiving devices, which can solve the separation of the receiving device and the machine, but cannot solve the problem of cost and volume. If they are not separated, there will be product customization and mutual restraint in the development cycle. If consumable products are integrated, the entire portable device and other products will not be able to be used normally due to damage to the wireless induction charging receiving device; although the existing technology (4) overcomes the above problems on the surface, it facilitates product circulation and is separated from the product body . However, due to the use of the shell of the non-metallic battery, the battery is more prone to the danger of swelling due to heat and explosion. At the same time, due to the use of a large number of copper coils, the limited space of the battery product can only reach about 70% of the original volume.

Therefore, there is an urgent need to develop a wireless charging receiver with versatility and high safety to meet the needs of technological development and the market.

Utility model content:

The utility model adopts the latest technology and the latest circuit design, as well as the latest battery interface definition standard, directly integrates all electric energy induction receiving and processing circuits outside the battery cell, without using the internal space of the battery metal shell, and ensures the The wireless induction battery has the same technical parameters as the original ordinary battery, such as volume and capacity, and completely solves the above problems.

According to the use characteristics of portable mobile communication and digital products, the utility model regulates the standards of wireless induction receiving devices such as size, volume, capacity, current, temperature, interface and protection in China. In this way, China and the world will not cause energy waste and serious excessive pollution of the earth's environment due to substandard wireless induction receiving batteries.

The utility model provides a wireless induction charging receiving device, which has high versatility and safety.

The wireless inductive charging device for portable communication equipment of the present utility model includes: a battery core for storing electric energy; a wireless induction coil for collecting magnetic fields to generate electric energy and output it to the input-output two-in-one protection circuit board; The magnetic shielding material between the battery core and the wireless induction coil is mainly used to isolate wireless electromagnetic waves; and the input and output two-in-one protection circuit board is used to safely input electric energy into the electric core and ensure the safe output of electric energy of the electric core .

The wireless inductive charging device for portable communication equipment further includes a battery plastic fixing frame and a shell sticker.

The cell includes a PT pin, which has a DC5V function

The electric core has a protective casing, which is a steel casing or an aluminum casing.

The magnetic shielding material can prevent wireless electromagnetic waves from directly acting on the battery metal casing to form eddy currents, and its thickness is 0.1 mm.

The thickness of the wireless energy induction coil is 0.1-0.5 mm.

The utility model provides a portable electronic device, which comprises the aforementioned wireless induction charging device for a portable communication device.

Description of drawings

Figure 1 is the internal electronic schematic diagram of the wireless inductive charging receiving device 1, in which, Figure 1-1 is a wireless induction receiving resonance circuit, Figure 1-2 is a low internal resistance high-efficiency rectification circuit, and Figure 1-3 is an overvoltage and overcurrent charging circuit Protection circuit, Figure 1-4 is a DC conversion circuit with high efficiency and low internal resistance, Figure 1-5 is the original overcurrent, overvoltage, overcharge and overdischarge protection circuit of lithium battery, Figure 1-6 wireless sensor mobile phone management charging, wired Charging input and output ports;

Figure 2 The internal electronic schematic diagram of the wireless induction charging receiving device 2, wherein Figure 2-1 is a wireless induction receiving resonance circuit, Figure 2-2 is a low internal resistance high-efficiency rectification circuit, and Figure 2-3 is an overvoltage and overcurrent charging circuit Protection circuit, Figure 2-4 is a high-efficiency low internal resistance DC conversion circuit, Figure 2-5 is the induction circuit directly charging the battery cell, Figure 2-6 is the original overcurrent, overvoltage, overcharge, and overdischarge protection of the lithium battery Circuit, Figure 2-7 Wireless induction mobile phone internal charging, wired charging input and output ports;

Figure 3 is the internal electronic schematic diagram of the wireless inductive charging receiving device 3, in which, Figure 3-1 is a wireless induction receiving resonance circuit, Figure 3-2 is a low internal resistance high-efficiency rectification circuit, and Figure 3-3 is an overvoltage and overcurrent charging circuit Protection circuit, Figure 3-4 is a high-efficiency low internal resistance DC conversion circuit, Figure 3-5 is the induction circuit directly charging the battery cell, Figure 3-6 is the original overcurrent, overvoltage, overcharge, and overdischarge protection of the lithium battery Circuit, Figure 3-7 wireless induction mobile phone management charging, wired charging input and output ports;

Figure 4(a) is a perspective view of a wireless inductive charging device for a portable communication device

Figure 4(b) is a cross-sectional view of a wireless induction charging device for a portable communication device;

Figure 5(a) is a sectional view of the circuit connection and assembly relationship of the wireless inductive charging device for portable communication equipment;

Figure 5(b) is a side view of the circuit connection and assembly relationship of the wireless induction charging device for portable communication equipment;

Fig. 6 is a structural diagram of a modified embodiment of a wireless inductive charging device for a portable communication device.

Detailed ways

For ease of description, the utility model is explained in detail in conjunction with the accompanying drawings.

The wireless inductive charging receiving device is mainly used to receive electromagnetic energy and convert it into electrical energy and input it into the battery core. It mainly includes a wireless induction resonant receiving circuit, a low internal resistance high-efficiency rectifier circuit, and an overvoltage and overcurrent charging protection circuit. High efficiency and low internal resistance DC conversion circuit, the original overcurrent, overvoltage, overcharge and overdischarge protection circuit of lithium battery, internal charging of wireless induction battery, wired charging input and output ports and other circuit structural units. The specific principle structure of each unit is shown in Figure 1 Among them, Figure 1-1 is a wireless induction receiving resonance circuit, Figure 1-2 is a low internal resistance high-efficiency rectification circuit, Figure 1-3 is an overvoltage and overcurrent charging protection circuit, and Figure 1-4 is a high efficiency low internal Blocking DC conversion circuit, Figure 1-5 is the original over-current, over-voltage, over-charge, over-discharge protection circuit of the lithium battery, Figure 1-6 wireless induction mobile phone management charging, wired charging input and output ports. Figure 1 introduces the internal electronic schematic diagram of the wireless inductive charging receiving device, which includes six parts; among them, Figure 1-5 and Figure 1-6 are the common circuits of traditional lithium batteries, while Figure 1-1 to Figure 1- 4 is the newly-added circuit of the present utility model, although this circuit all adopts conventional miniature electronic components and parts to form, still has technical challenge for the realization of each technical index and the situation that does not change the existing battery volume, especially The voltage of wireless induction is very flexible with the weight of the load, ranging from a few volts to tens of volts (this miniature wireless energy receiving device is generally between 6 and 23V), improper design and processing can easily damage the induction receiving voltage regulator circuit, and at the same time It is also accompanied by the danger of high temperature and even burning. In the design of the utility model, the problem of heat generation is solved from many aspects. On the circuit, the load is automatically turned off according to the dynamic load and the time when the charge is full, and in the case of a small load, the high-efficiency DC TO DC step-down output is used instead of using Traditional LDOs consume excess voltage in mode.

Figure 2-1 is a wireless induction receiving resonance circuit, Figure 2-2 is a low internal resistance high-efficiency rectification circuit, Figure 2-3 is an overvoltage and overcurrent full charge protection circuit, Figure 2-4 is a high efficiency low internal resistance DC conversion circuit , Figure 2-5 is the induction circuit directly charging the battery cell, Figure 2-6 is the original overcurrent, overvoltage, overcharge, overdischarge protection circuit of the lithium battery, Figure 2-7 wireless induction mobile phone internal charging, wired charging input and output port.

Figure 3-1 is a wireless induction receiving resonance circuit, Figure 3-2 is a low internal resistance high-efficiency rectification circuit, Figure 3-3 is an overvoltage and overcurrent full charge protection circuit, Figure 3-4 is a high efficiency low internal resistance DC conversion circuit , Figure 3-5 is the induction circuit directly charging the battery cell, Figure 3-6 is the original overcurrent, overvoltage, overcharge, overdischarge protection circuit of the lithium battery, Figure 3-7 wireless induction mobile phone management charging, wired charging input and output port.

In Figure 2 and Figure 3, on the basis of Figure 1, an induction circuit is added to directly charge the internal battery cell, so that the old portable device can also directly inductively charge the battery in the state of no charging detection or no portable device. The difference between Figure 2 and Figure 3 is that Figure 3 can use the portable device to detect the charging management circuit to display the charging status, and can also use the internal charging circuit of the battery to inductively charge the battery cell. However, Figure 2 can only be charged with the internal charging circuit of the battery. The above Figures 1, 2, and 3 can use the original USB CABLE of the portable device to charge the portable device with a cable.

Fig. 4 shows the assembly structure relationship and assembly process of the wireless induction charging device for portable communication equipment. This structure maximizes the use of battery space. By not destroying the external protective structure of metal cells such as steel and aluminum, the safety of the battery is guaranteed. Due to the size of the original portable device battery, the circuit interface and the definition of the original battery pin are completely consistent, which is convenient for seamless switching of products, and convenient for new and old users to upgrade from wired rechargeable batteries to wireless induction rechargeable batteries. As shown in the three-dimensional structure diagram and cross-sectional diagram of Figure 4, the wireless induction charging device for portable communication equipment includes: a battery cell and a two-in-one protection circuit board 1 for the input and output of the wireless induction charging circuit, an electric energy induction coil 2, a battery cell 3, Magnetic shielding material4.

Figure 5 is a diagram of the circuit connection and assembly relationship of the wireless induction charging device for portable communication equipment. material, the battery cell has a protective shell, preferably a steel shell or an aluminum shell; the battery plastic fixing frame and the shell sticker 6, which are actually the shell of the induction battery, the input and output two-in-one protection circuit of the battery core and the wireless induction charging circuit Plate 1, magnetic shielding material 4 preferably have a thickness of 0.1 mm, and the patch flexible special wireless energy induction coil 2 has a preferred thickness of 0.1 to 0.5 mm, so that the thickness of the battery combined with the five materials can be completely the same as the original battery size without Occupies battery space. As shown in Figure 5(a), the battery cell 3, the battery plastic fixing frame and the shell sticker 6 are traditional portable device battery manufacturing processes, and the input and output of the battery cell and the wireless inductive charging circuit are combined to protect the circuit board 1 and the magnetic shield. The material 4 is preferably a thickness of 0.1 mm and the patch flexible special wireless energy induction coil 2 is the wireless induction charging material and related circuits added for the utility model. Among them, the magnetic shielding material 4 is mainly used for isolating wireless electromagnetic waves, preventing the wireless electromagnetic waves from directly acting on the metal casing of the battery to form eddy currents, causing the battery to heat up or even explode. SMD flexible dedicated wireless energy induction coil 2 is a professionally designed resonant and resonant coil with the wireless charger transmitter. The coil can collect the emitted magnetic field with maximum efficiency to generate electric energy and output it to the input and output two-in-one protection circuit board 1. The protection circuit board 1 has a circuit structure for controlling and safety protection of the obtained electric energy, and is safe for charging. The high voltage is cut off, and the electric energy output by the cell is safely protected. The electric energy output by the protection circuit board 1 is transmitted to the interior of the portable device through the PT/VCC_5V battery terminal through the portable device battery connector (battery holder).

As another modified embodiment of the present utility model, the wireless charging structure is combined with the back cover of the mobile communication product or digital product, and the back cover cooperates with the battery to form a wireless charging device, which cooperates to pass the induced electric energy received by the back cover through Several spring contacts are sent to the interior of the product for circuit charging processing. As shown in Figure 6, the portable device 7 has a detachable wireless induction rear cover 8, and the rear cover 8 has a patch-type flexible or PCB induction coil 9, and a magnetic shielding material 10 located below the induction coil 9, and on the rear The cover 8 has a traditional round hole or a flat row of wired charging and data sockets 11, and the portable device 7 has a contact or data interface 12 matched with the back cover, and the induction battery back cover is connected through the contact or data interface 12. Complete wireless charging. Its specific charging and control process is as the aforementioned method.

The wireless charging receiving device of the present utility model solves the problem that both old and new portable devices are compatible with the wireless charging function. Since both old and new batteries adopt a unified battery interface and volume, it is easy to seamlessly switch between markets. After using the wireless induction rechargeable battery, activate the matching mobile wireless charging transmitter device, and wireless charging can be performed even in the wild, outdoors and other mobile places.

The utility model adopts a flexible circuit board or an ultra-thin PCB to realize a wireless electromagnetic energy induction coil, and uses a magnetic shielding material to be placed under the induction coil to realize the smallest and thinnest volume of the wireless charging receiving device, the minimization of heat generation, and the maximization of electric energy induced by gathering magnetic energy , Isolate the heating problem caused by the eddy current effect of the metal shell caused by the alternating magnetic field; at the same time, the best combination of the two products is used for the battery back cover (including embedded) of mobile communication products, and the lithium battery metal embedded in it The method of realizing wireless induction on the surface of the shell to receive the best electric energy belongs to the protection scope of the utility model patent; the wireless induction charging receiving device for portable equipment and portable digital products designed according to the design legend principle of the utility model realize the lightest and most economical products. The method of materials; the wireless inductive charging receiving device of portable equipment designed according to the design legend principle of the utility model, and the portable digital product realize the highest efficiency charging of the product, the lowest power loss, the best charging interface design, and use the original portable equipment battery PT, PD of the product Terminals for charging management circuit to realize wired and wireless two-in-one.

Although the utility model has been shown and described with reference to specific preferred embodiments, those skilled in the art should understand that the specific implementation or examples listed in this description are only for understanding the technical content of the utility model, without departing from Under the condition of the gist and scope of the present utility model, the present utility model can carry out various changes in form and detail.

Claims (7)

1. portable communication apparatus radio induction charging device, it comprises: an electric core, it is used for storage of electrical energy; One wireless induction coil, it is used for that magnetic field is collected the generation electric energy and exports to the two-in-one protective circuit plate of input and output; Magnetic shielding material between electric core and wireless induction coil, it is mainly used in the isolation radio magnetic wave; And the two-in-one protective circuit plate of input and output, be used for safety output with electric core of being input to of electric energy safe and assurance electricity core electric energy.

2. portable communication apparatus radio induction charging device as claimed in claim 1 is characterized in that: described portable communication apparatus radio induction charging device further includes battery plastics fixed frame and shell paster.

3. portable communication apparatus radio induction charging device as claimed in claim 2 is characterized in that: described electric core comprises the PT pin, and this PT pin has the DC5V function.

4. portable communication apparatus radio induction charging device as claimed in claim 3 is characterized in that: described electric core has protecting sheathing, and this shell is box hat or aluminum hull.

5. portable communication apparatus radio induction charging device as claimed in claim 4 is characterized in that: described magnetic shielding material can prevent that radio magnetic wave from directly acting on the battery metal shell and forming eddy current, and its thickness is 0.1mm.

6. portable communication apparatus radio induction charging device as claimed in claim 5 is characterized in that: the thickness of wireless induction coil is 0.1～0.5mm.

7. portable electric appts, it comprises as the described portable communication apparatus radio induction charging of claim 1-6 device.

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