CN204732929U - A kind of portable power source with wireless charging function - Google Patents

Abstract

The utility model discloses a mobile power supply with wireless charging function, which comprises a first casing and a second casing nested in the first casing, a mobile power supply circuit is arranged in the first casing, and a wireless charging circuit is arranged in the second casing. Charging and transmitting device; the outer surface of the first casing is inwardly recessed to form a groove, the second casing is just placed in the groove, and the first casing and the second casing are smoothly connected to form an integral body; the first casing is smoothly connected to form a whole; A battery pack is provided inside the casing, and the battery pack is electrically connected to the mobile power circuit; a conductive member is provided in the groove, and the wireless charging transmitting device is electrically connected to the battery pack through the conductive member.

Description

A mobile power supply with wireless charging function

technical field

The utility model relates to the field of mobile power sources, in particular to a mobile power source with a wireless charging function.

Background technique

In recent years, portable electronic devices, such as mobile phones, tablet computers, etc., have been popularized and used on a large scale. Such electronic products generally consume a lot of power, so mobile power banks emerged as the times require and can be widely used. Mobile power is a portable charger that integrates power supply and charging functions. It can charge mobile phones and other digital devices anytime, anywhere or standby power. Generally, lithium batteries or dry batteries are used as power storage units. They usually have large capacity, multi-purpose, and volume. Small, long life and safe and reliable.

There are currently three types of mobile power supplies on the market, including wired charging mobile power supplies, wireless charging mobile power supplies, and wireless charging treasures with two charging methods solidified together; although these three mobile power supplies can charge electronic devices, they cannot meet the requirements of both All terminal devices are charged at the same time. At present, users often carry multiple electronic devices with them in a mobile environment, such as two or more mobile phones, tablet computers, etc. When two or more electronic devices need to be charged, users usually use mobile power to charge them first. It takes too long to charge one electronic device and then charge another electronic device after the charging is complete, and the user cannot use two electronic devices to charge at the same time during the charging process. In response to this problem, most users will use two mobile power supplies to charge two electronic devices at the same time. Carrying two mobile power supplies will cause inconvenience to users in a mobile environment, and the quantity is large and easy to lose.

For this reason, an invention patent with application number 201510083114.1 discloses a wireless rechargeable mobile power supply, which includes a cuboid-shaped power supply body, a battery is installed in the power supply body, and a control circuit connected to the battery. connected charging interface and button switch; a wireless charging output module is installed on at least one wall of the main body of the power supply, the wireless charging output module is connected to the control circuit, a first shell is connected to the outside of the main body of the power supply, and a A second shell; by configuring two shells, the main body of the power supply can be extended vertically or horizontally to an inclined state, so that when the mobile phone is placed on the main body of the power supply for charging, the main body of the power supply can be used as a bracket to support the mobile phone at the same time, which is convenient for users use cell phone. Although the mobile power supply also realizes the wireless charging function at the same time, it integrates the circuits of wireless charging and wired charging, which requires a major change to the existing mobile power supply. , which is difficult to implement and difficult to produce.

Utility model content

Therefore, in view of the above problems, the utility model proposes a mobile power supply with a wireless charging function, and a wireless charging module is added on the basis of the existing mobile power supply. The wireless charging module is independent from the original mobile power supply and does not affect each other; , considering the combination of the wireless charging module and the mobile power supply, if used at the same time, its heat dissipation capability is poor, the existing mobile power supply structure is improved, the heat dissipation capability of the wireless charging module is enhanced, and the service life of the mobile power supply is improved.

In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a mobile power supply with wireless charging function, including a first casing and a second casing nested in the first casing, the first casing is equipped with There is a mobile power supply circuit, and a wireless charging transmitter is installed in the second housing; the outer surface of the first housing is inwardly recessed to form a groove, and the second housing is just placed in the groove, the first housing and the second The shells are connected smoothly to form an integral body; a battery pack is provided inside the first shell, and the battery pack is electrically connected to the mobile power supply circuit; a conductive member is provided in the groove, and the wireless charging transmitter and the wireless charging transmitter are connected to each other through the conductive member. The battery pack is electrically connected for obtaining power from the battery pack.

Specifically, for the sake of aesthetics, the groove is a circular groove, and the second shell is a short cylindrical structure. As a feasible solution, an elastic steel ring with conductive function is arranged in the circular groove, and the wireless charging transmitting device is connected with the battery pack through the elastic steel ring. The elastic steel ring can also be realized by other conductive parts, such as conductive parts made of copper sheet and gold material with conductive function.

In order to facilitate the placement of the second case with the wireless charging transmitting device, the first case is provided with a buckle structure, and the second case is provided with a buckle structure corresponding to the first case, so that the first case The main body and the second shell are stuck and are not easy to fall. For example, at least two elastic buckles are further provided in the groove of the first housing for fixing the wireless charging transmitting device. certainly,

In addition, the bottom of the first casing is also provided with components such as a power-on button, an indicator light, a power interface, and a USB interface. The power interface at the bottom of the first casing is connected to the mains through wires for charging the battery pack.

At the same time, the first shell is also equipped with a battery charge and discharge management chip, which is connected to the battery pack to provide a stable power supply voltage; the power interface at the bottom of the first shell, the power button, the indicator light and the USB interface are all connected to the battery charge and discharge. The management chip is connected; the USB interface at the bottom of the first housing is connected to an external terminal for charging the terminal.

The wireless charging transmitting device arranged in the second casing includes a transmitting coil and a transmitting circuit, and the transmitting coil is electrically connected with the transmitting circuit. As a feasible solution, a buckle is provided in the groove of the first housing, and a fastener is provided in the circumferential direction of the second housing, and the fastener is composed of two circular steel rings, which are fixed around the second housing; A groove is formed in the middle of the two circular steel rings to hold the buckle; there is also a USB slot around the second housing for external power supply; the circular steel rings can also use other conductive function The implementation of conductive parts, such as conductive parts made of copper sheet and nickel material. This scheme makes the structure of the whole mobile power supply simple and easy to realize.

The transmitting circuit includes an LDO (low dropout regulator, low dropout linear regulator) power management chip, a microprocessor control chip, a full bridge drive circuit, a transmitting coil, a detection circuit and a demodulation circuit; the detection circuit, through Detect the current and voltage of the total transmitting circuit, and feed back the detection result to the microprocessor control chip for processing to realize the foreign object detection function; the transmitting coil is used to transmit the energy signal to the receiving coil; the LDO power management chip is used to To provide power supply voltage for the microprocessor control chip to work; the demodulation circuit is used to demodulate the data packet fed back by the receiving end, and feed it back to the microprocessor control chip for processing; the circular steel ring and the LDO power supply The management chip, the detection circuit and the full bridge drive circuit are connected to provide the power supply voltage of the mobile power battery pack; the USB slot is connected to the LDO power management chip, the detection circuit and the full bridge drive circuit to provide the power supply voltage of the external power supply The LDO power management chip is connected to the microprocessor control chip; the output end of the microprocessor control chip is connected to the input end of the full bridge drive circuit; the output end of the full bridge drive circuit is connected to the The input terminal of the detection circuit is connected, the output terminal of the full bridge drive circuit is connected with the input terminal of the transmitting coil; the output terminal of the transmitting coil is connected with the input terminal of the demodulation circuit; the demodulation circuit The output end is connected with the input end of the microprocessor control chip; the output end of the detection circuit is connected with the input end of the microprocessor control chip.

As a specific solution, the battery pack is a polymer lithium battery for storing and releasing electricity. The power output of the polymer lithium battery is 5V/2.1A, which is used to directly connect to the terminal for charging. The indicator light is used to display the current power state of the polymer lithium battery; the power input of the power interface is 5V/2A, which is used to charge the polymer lithium battery; the battery charge and discharge management chip is connected with the polymer lithium battery The connection is used to realize the charge and discharge management of the polymer lithium battery.

In order to realize the detachable function of the first shell and the wireless charging transmitting device, the utility model clamps the second shell of the wireless charging transmitting device through two elastic buckles on the circular groove at the upper end of the first shell The groove formed by two circular steel rings around is used to fix the wireless charging transmitter;

Further, in order to realize the energy transmission between the mobile power supply and the wireless transmitting device, as a better technical solution, the elastic steel ring and the circular steel ring are electrically connected in contact.

Since the temperature has a great influence on the charge and discharge performance of the battery, the electrochemical reaction on the electrode electrolyte interface is related to the ambient temperature. If the temperature is too high, it will destroy the internal chemical balance of the battery, cause side reactions, and affect the battery life. In order to improve Battery life, the utility model utilizes the detachable function, and by using the mobile power supply and wireless charging separately, the heat generated during the charging process of the mobile power supply and the heat generated by the wireless charging external power supply are independently dissipated to avoid the loss of the two during the charging process. The heat is superimposed, causing the temperature to rise too fast, which affects the battery life. At the same time, in order to further enhance the heat dissipation capability, the second shell is made with a smooth surface, that is, each corner is designed with rounded corners, so that a heat dissipation gap is formed between the first shell and the second shell.

Compared with the prior art, the utility model has the beneficial effects of a mobile power supply with wireless charging function as follows:

(1) The first casing and the wireless charging transmitting device of the utility model are clamped by two elastic buckles on the circular groove on the upper end of the first casing to hold the two sides around the second casing of the wireless charging transmitting device. A groove composed of two circular steel rings is used to fix the wireless charging transmitter; the contact electrical connection between the elastic steel ring and the circular steel ring is used to realize energy transmission, the design is simple, convenient and easy to use, And it is easy to implement, and the production can be realized without the original mobile power supply manufacturer greatly improving its circuit;

(2) The utility model has a detachable function, and can be charged in combination or separately according to the needs of users. When combined, it is easy to carry; when used separately, it can satisfy two terminals charging at the same time, which greatly shortens the waiting time of multiple devices to be charged, improves efficiency, and can ensure that the temperature rises within the normal range during charging, greatly improving Extended battery life, safe to use;

(3) The utility model integrates a wireless charging and transmitting device through a mobile power supply, has a simple structure, and does not need to connect wires when charging, and can be used as soon as it is charged.

Description of drawings

Fig. 1 is the mobile power supply structure schematic diagram of the embodiment of the utility model;

Fig. 2 is a disassembled structure diagram of the first housing and the wireless charging transmitting device of the embodiment of the present invention;

Fig. 3 is a structural diagram of the wireless charging transmitting device of the present invention;

Fig. 4 is a schematic plan view of the bottom end of the first housing of the present invention;

Fig. 5 is the circuit block diagram of the present utility model;

The markings in the figure are as follows:

1. First shell, 2. Second shell, 3. Groove, 4. Elastic steel ring, 5. Elastic buckle, 6. Bottom of first shell, 21, USB slot, 22, round Steel ring, 23, the top side of the second housing, 61, indicator light, 62, power-on button, 63, power interface, 64, USB interface.

detailed description

The utility model is further described now in conjunction with accompanying drawing and specific embodiment.

As shown in Figures 1 and 2, a mobile power supply with wireless charging function of the present invention is characterized in that it includes a first housing 1 and a second housing 2 nested in the first housing 1, the second A mobile power supply circuit is provided in a casing 1, and a wireless charging transmitting device is provided in a second casing 2; the outer surface of the first casing is recessed inward to form a groove 3, and the second casing 2 is just placed in the concave In the groove 3, the first shell 1 and the second shell 2 are connected smoothly to form a whole; the first shell 1 is provided with a battery pack inside, and the battery pack is electrically connected to the mobile power circuit; in the groove 3 A conductive member is provided, through which the wireless charging transmitting device is electrically connected to the battery pack, and is used to obtain power from the battery pack.

As a specific example, the upper end of the first housing 1 has a circular groove 3 for embedding the second housing 2; An elastic steel ring 4 with conductive function is arranged on the groove 3, which is used to connect the wireless charging transmitting device to realize energy transmission. The battery pack is connected to the wireless charging transmitting device in the second casing 2 through the elastic steel ring 4 with conductive function, and is used to provide power. Two elastic buckles 5 are also provided in the circular groove 3 on the upper end of the first housing 1 for fixing the second housing 2 . The elastic steel ring can also be a conductive part realized by copper sheet and gold material with conductive function.

As shown in FIG. 3 , the wireless charging transmitting device includes a transmitting coil and a transmitting circuit; The second housing 2 is provided with clips around, in this embodiment, the clip is composed of two circular steel rings 22, the circular steel rings 22 are stacked and fixed in the circumferential direction of the second casing; two A groove is formed in the middle of the circular steel ring, which is used to hold the buckle; a USB slot 21 is also provided around the second housing for external power supply; Conductive parts that conduct electricity.

Referring to FIG. 4 , the bottom end 6 of the first casing is also provided with an indicator light 61 , a power button 62 , a power interface 63 and a USB interface 64 . In addition, a battery charging and discharging management chip is provided inside the first housing 1, and the battery charging and discharging management chip is electrically connected to the battery pack to provide a stable power supply voltage; the power interface at the bottom of the first housing 1 is connected to the market through wires. Electricity, used to charge the battery pack; the power interface at the bottom of the first housing, the power button, the indicator light and the USB interface are all connected to the battery charge and discharge management chip; the USB interface at the bottom of the first housing is connected to an external terminal for supplying the terminal Charge.

As shown in Figure 5, the transmitting circuit includes an LDO power management chip, a microprocessor control chip, a full bridge drive circuit, a transmitting coil, a detection circuit and a demodulation circuit; Feedback to the microprocessor control chip for processing, used to realize the foreign object detection function; the transmitting coil, used to transmit the energy signal to the receiving coil; LDO power management chip, used to provide power supply voltage for the microprocessor control chip to work; demodulation circuit , used to demodulate the data packet fed back by the receiving end, and feed it back to the microprocessor control chip for processing; the circular steel ring is connected with the LDO power management chip, the detection circuit and the full bridge drive circuit, and is used to provide a mobile power battery pack Power supply voltage; the USB slot is connected with the LDO power management chip, the detection circuit and the full bridge drive circuit to provide the power supply voltage of the external power supply; the LDO power management chip is connected with the microprocessor control chip; the output terminal of the microprocessor control chip It is connected with the input end of the full-bridge drive circuit; the output end of the full-bridge drive circuit is connected with the input end of the detection circuit, and the output end of the full-bridge drive circuit is connected with the input end of the transmitting coil; the output end of the transmitting coil is connected with the input end of the demodulation circuit The output end of the demodulation circuit is connected with the input end of the microprocessor control chip; the output end of the detection circuit is connected with the input end of the microprocessor control chip.

In addition, the battery pack inside the first casing 1 is a polymer lithium battery, which is used to store and release power; the indicator light is used to display the current power state of the polymer lithium battery; the power output of the polymer lithium battery is 5V/2.1A, It is used to directly connect to the terminal for charging; the power input of the power interface is 5V/2A, which is used to charge the polymer lithium battery; the connection between the battery charge and discharge management chip and the polymer lithium battery is used to realize the charge and discharge management of the polymer lithium battery .

In the above-mentioned embodiment of the present utility model, the first housing 1 and the second housing 2 are clamped by the two elastic buckles 5 in the circular groove 3 at the upper end of the first housing 1 to hold the two sides of the second housing. The groove formed by two circular steel rings 22 is used to fix the second housing; the contact electrical connection between the elastic steel ring and the circular steel ring is used to realize energy transmission.

The utility model has a detachable function, and can be combined or separately charged according to the needs of users. When combined, it is easy to carry; when used separately, it can satisfy two terminals charging at the same time, which greatly shortens the waiting time of multiple devices to be charged, improves efficiency, and can ensure that the temperature rises within the normal range during charging, greatly improving It improves battery life and is safe to use.

The utility model integrates a wireless charging and transmitting device through a mobile power supply, has a simple structure, does not need to connect wires during charging, and can be used as it is charged.

Although the utility model has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the utility model defined by the appended claims, changes in form and details may be made. Making various changes to the utility model is within the protection scope of the utility model.

Claims (7)

1. there is a portable power source for wireless charging function, it is characterized in that: comprise the first housing and be nested in the second housing in the first housing, be provided with portable power source circuit in the first housing, in the second housing, establish wireless charging emitter; The outer surface of described first housing caves inward formation one groove, and the second housing is just placed in this groove, and it is in aggregates that the first housing and the second housing link up shape smoothly; Described first enclosure interior is provided with battery pack, and battery pack and portable power source circuit are electrically connected; Be provided with electric-conductor in described groove, by this electric-conductor, wireless charging emitter and battery pack be electrically connected.

2. portable power source according to claim 1, is characterized in that: described groove is circular groove, and described second housing is short cylindrical structure.

3. portable power source according to claim 1, is characterized in that: described first housing is provided with buckle structure, and the second housing is provided with the buckle structure corresponding with the first housing, thus the first housing and the second housing holding are not easily dropped.

4. portable power source according to claim 3, is characterized in that: be provided with buckle in the groove of the first housing, and the circumference of the second housing has fastener, and this fastener is made up of two circular steel rings, is fixed on the second housing surrounding; Groove is formed, for blocking buckle in the middle of two circular steel rings.

5. portable power source according to claim 1, is characterized in that: described wireless charging emitter comprises transmitting coil and radiating circuit, and transmitting coil and radiating circuit are electrically connected.

6. portable power source according to claim 5, is characterized in that: described radiating circuit comprises LDO power management chip, Microprocessor S3C44B0X chip, full bridge driving circuit, transmitting coil, testing circuit and demodulator circuit; Described testing circuit, launches way circuit current/voltage by detecting, and testing result is fed back to the process of Microprocessor S3C44B0X chip, for realizing foreign bodies detection function; Described transmitting coil, for being transferred to receiving coil by energy signal; Described LDO power management chip, for providing supply voltage for Microprocessor S3C44B0X chip operation; Described demodulator circuit, for the packet demodulation of being fed back by receiving terminal out, and feeds back to the process of Microprocessor S3C44B0X chip; Described LDO power management chip is connected with described Microprocessor S3C44B0X chip; The output of described Microprocessor S3C44B0X chip is connected with the input of described full bridge driving circuit; The output of described full bridge driving circuit is connected with the input of described testing circuit, and the output of described full bridge driving circuit is connected with described transmitting coil input; The output of described transmitting coil is connected with the input of described demodulator circuit; The output of described demodulator circuit is connected with the input of described Microprocessor S3C44B0X chip; The output of described testing circuit is connected with the input of described Microprocessor S3C44B0X chip.

7. portable power source according to claim 1, is characterized in that: described battery pack is poly-lithium battery.