CN207853546U - A mobile power - Google Patents

Abstract

The utility model relates to the technical field of electronic circuits, in particular to a mobile power supply. The utility model discloses a mobile power supply, which comprises an input interface module, a charging and boosting circuit, a protection circuit, a rechargeable battery, an output interface module, a data transmission module and a main control module, an input interface module, a charging and boosting circuit, a protection circuit The circuit and the rechargeable battery are connected in sequence to form the charging circuit of the rechargeable battery, the rechargeable battery, the protection circuit, the charging and boosting circuit and the output interface module are connected in sequence to form the charging circuit of the external device, and the input interface module, the data transmission module and the output interface module are connected in sequence A data transmission path is formed, and the input interface module, the charging and boosting circuit, the output interface module and the data transmission module are respectively connected to the main control module, and the rechargeable battery supplies power to the main control module through the protection circuit. The utility model has the advantages of simple circuit structure, fewer components, low cost, high charging and discharging efficiency and data transmission function.

Description

A mobile power

technical field

The utility model belongs to the technical field of electronic circuits, in particular to a mobile power supply.

Background technique

Nowadays, various smart mobile devices (such as smart phones, tablet computers, etc.) have increasingly diversified functions, are used more frequently, and are more and more closely related to our daily life, but at the same time, the power consumption is getting faster and faster. It is even more urgent to increase the service time of various smart mobile devices and to replenish the power supply in time to facilitate the maximum use of them. Mobile power supply is the best solution to solve this problem. Carrying a mobile power supply with you can charge various smart mobile devices outdoors anytime and anywhere.

A mobile power supply is a portable charger that integrates power supply and charging functions. It can charge mobile phones and other smart mobile devices anytime, anywhere or provide standby power. Lithium batteries or dry batteries are generally used as power storage units. Mobile power supply is generally equipped with a variety of power adapters, which can provide power or standby charging for various smart mobile devices such as mobile phones, MP3, MP4, mobile phones, PDAs, handheld computers, and handheld game consoles anytime and anywhere. However, the current mobile power supply on the market has a complex circuit structure, many electronic components, high cost, high power consumption, and the safety and reliability of the circuit needs to be improved. In addition, the existing mobile power supply does not have the function of data transmission and cannot satisfy people's growing needs.

Contents of the invention

The purpose of this utility model is to provide a mobile power supply to solve the above problems.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a mobile power supply, including an input interface module, a charging and boosting circuit, a protection circuit, a rechargeable battery, an output interface module, a data transmission module and a main control module. The input interface module, the charging and boosting circuit, the protection circuit and the rechargeable battery are sequentially connected to form a charging circuit for the rechargeable battery, and the rechargeable battery, the protection circuit, the charging and boosting circuit and the output interface module are connected in sequence to form a charging circuit for the external device, The input interface module, the data transmission module and the output interface module are sequentially connected to form a data transmission path, the input interface module, the charging and boosting circuit, the output interface module and the data transmission module are respectively connected to the main control module, and the rechargeable battery Power is supplied to the main control module through the protection circuit.

Further, the data transmission module includes a resistor R17, a resistor R26, a resistor R27, a resistor R29, a resistor R31, a resistor R32, a resistor R33, a resistor R34, an NPN transistor Q3, an NPN transistor Q4, an NPN transistor Q5, and an NPN transistor Q6. The emitter of the NPN transistor Q5 is grounded, the collector of the NPN transistor Q5 is connected to the base of the NPN transistor Q3, and the node series resistance R32 between the collector of the NPN transistor Q5 and the base of the NPN transistor Q3 is connected to the charging and boosting The boost output terminal of the circuit, the emitter of the NPN transistor Q3 is respectively connected to the input interface module and the output interface module, and the resistor R26 and the resistor R29 are connected in series between the boost output terminal of the charging and boost circuit and the ground , the node between the resistor R26 and the resistor R29 is connected to the collector of the NPN transistor Q3, the emitter of the NPN transistor Q6 is grounded, the collector of the NPN transistor Q6 is connected to the base of the NPN transistor Q4, and the NPN transistor Q6 The node series resistor R34 between the collector and the base of the NPN transistor Q4 is connected to the boost output terminal of the charging and boosting circuit, the emitters of the NPN transistor Q4 are respectively connected to the input interface module and the output interface module, and the resistor R27 After being connected in series with the resistor R31, it is connected between the boost output terminal of the charging and boosting circuit and the ground, the node between the resistor R27 and the resistor R31 is connected to the collector of the NPN transistor Q4, and the base of the NPN transistor Q5 is in turn The series resistors R33 and R17 are connected to the base of the NPN transistor Q6, and the node between the resistors R33 and R17 is connected to the control output terminal of the main control module.

Further, a power display module is also included, and the power display module is connected with the main control module.

Furthermore, the power display module is realized by LED digital tubes.

Further, the main control module is realized by a single-chip microcomputer modeled as HT66F004-20.

Further, the rechargeable battery is a lithium battery.

Furthermore, the protection circuit is implemented by a chip with the model number XB8089D.

Further, the charging and boosting circuit is realized by a chip of model BQ25895.

Beneficial technical effects of the utility model:

In addition to the basic charging and discharging functions, the utility model also has a data transmission function, can be used as a data line, has diversified functions, and satisfies people's increasing needs. And by optimizing the design of the circuit structure, the circuit structure is simple, the electronic components are less, the cost is low, the power consumption is small, and the circuit safety and reliability are high.

Description of drawings

Fig. 1 is the structural block diagram of the specific embodiment of the utility model;

Fig. 2 is a schematic circuit diagram of a specific embodiment of the utility model.

Detailed ways

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

As shown in Figure 1, a mobile power supply includes an input interface module 1, a charging and boosting circuit 2, a protection circuit 6, a rechargeable battery 7, an output interface module 5, a data transmission module 8 and a main control module 3, the input The interface module 1, the charging and boosting circuit 2, the protection circuit 6 and the rechargeable battery 7 are sequentially connected to form a charging circuit for the rechargeable battery 7. When the main control module 3 detects that the input interface module 1 has an external power source connected, it controls the charging and boosting circuit. The voltage circuit 2 enters the battery charging management mode, and the external power supply charges the rechargeable battery 7 through the input interface module 1, the charging and boosting circuit 2, and the protection circuit 6, and the rechargeable battery 7, the protection circuit 6, the charging and boosting circuit 2 and the The output interface module 5 is sequentially connected to form a charging circuit for an external device. When the main control module 3 detects that an external device to be charged is connected to the output interface module 5, it controls the charging and boosting circuit 2 to enter the boost and stabilize the voltage to 5V output. The rechargeable battery 7 charges the external device to be charged through the protection circuit 6 , the charging and boosting circuit 2 and the output interface module 5 . The input interface module 1, the data transmission module 8 and the output interface module 5 are sequentially connected to form a data transmission path, and the input interface module 1, the charging and boosting circuit 2, the output interface module 5 and the data transmission module 8 are respectively connected with the main control The module 3 is connected, and the rechargeable battery 7 supplies power to the main control module 3 through the protection circuit 6 .

When the main control module 3 detects that the external power source connected to the input interface module 1 is from the computer, the main control module 3 outputs a high-level signal to drive the data transmission module 8, and starts the computer and external devices (such as mobile phones) through the data transmission module 8. or smart devices such as tablets) to transfer data and files between.

As shown in Figure 2, in this specific embodiment, the data transmission module 8 includes a resistor R17, a resistor R26, a resistor R27, a resistor R29, a resistor R31, a resistor R32, a resistor R33, a resistor R34, an NPN transistor Q3, and an NPN transistor Q4 , NPN transistor Q5 and NPN transistor Q6, the emitter of the NPN transistor Q5 is grounded, the collector of the NPN transistor Q5 is connected to the base of the NPN transistor Q3, and between the collector of the NPN transistor Q5 and the base of the NPN transistor Q3 The node series resistor R32 is connected to the boost output terminal VOUT of the charging and boosting circuit 2, the emitter of the NPN transistor Q3 is respectively connected to the input interface module 1 and the output interface module 5, and the resistor R26 and the resistor R29 are connected in series. Between the boost output terminal VOUT of the charging and boosting circuit 2 and the ground, the node between the resistor R26 and the resistor R29 is connected to the collector of the NPN transistor Q3, the emitter of the NPN transistor Q6 is grounded, and the NPN transistor The collector of Q6 is connected to the base of the NPN transistor Q4, and the node series resistance R34 between the collector of the NPN transistor Q6 and the base of the NPN transistor Q4 is connected to the boost output terminal VOUT of the charging and boosting circuit 2, and the NPN transistor The emitters of Q4 are respectively connected to the input interface module 1 and the output interface module 5, the resistor R27 and the resistor R31 are connected in series between the boost output terminal VOUT of the charging and boost circuit 2 and the ground, the resistor R27 and the resistor The node between R31 is connected to the collector of the NPN transistor Q4, the base of the NPN transistor Q5 is connected in series with resistors R33 and R17 to the base of the NPN transistor Q6, and the node between the resistors R33 and R17 is connected to the control of the main control module 3 Output TX.

In this specific embodiment, a power display module 4 is also included, and the power display module 4 is connected to the main control module 3 . Preferably, the power display module 4 is an LED power display module, and the LED power display module 4 is realized by an LED digital tube. The specific circuit is shown in FIG. 2 , which will not be described in detail here.

In this specific embodiment, the main control module 3 is implemented by a single-chip microcomputer U2 with a model number of HT66F004-20. The specific circuit is shown in FIG. 2 , and will not be described in detail here.

In this specific embodiment, the rechargeable battery 7 is a lithium battery, and the protection circuit 6 is a lithium battery protection circuit, which is used for overcharging, overdischarging and short-circuit protection of the lithium battery 7 to improve circuit safety and reliability. To prolong the service life, in this embodiment, the protection circuit 6 is realized by the chip U3 whose model is XB8089D. The specific circuit is shown in FIG. 2 for details, and will not be described in detail here.

In this specific embodiment, the charging and boosting circuit 2 is implemented by a chip U4 with a model number of BQ25895, and the specific circuit is shown in FIG. 2 , which will not be described in detail here.

In addition to the basic charge and discharge functions, the utility model also has a data transmission function, which can be used as a data line, and the data and file transmission between the computer and external devices (such as smart devices such as mobile phones or tablet computers) has diversified functions. Meet the growing needs of people. And by optimizing the design of the circuit structure, the circuit structure is simple, the electronic components are less, the cost is low, the power consumption is small, and the circuit safety and reliability are high.

Although the utility model has been specifically shown and described in conjunction with 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 (8)

1. A mobile power supply, characterized in that: comprising an input interface module, a charging and boosting circuit, a protection circuit, a rechargeable battery, an output interface module, a data transmission module and a main control module, the input interface module, charging and boosting The circuit, the protection circuit and the rechargeable battery are sequentially connected to form a charging circuit for the rechargeable battery. The rechargeable battery, the protection circuit, the charging and boosting circuit and the output interface module are connected in sequence to form a charging circuit for the external device. The input interface module, the data transmission The module and the output interface module are sequentially connected to form a data transmission path, the input interface module, the charging and boosting circuit, the output interface module and the data transmission module are respectively connected to the main control module, and the rechargeable battery supplies power to the main control module through the protection circuit . 2. The mobile power supply according to claim 1, characterized in that: the data transmission module includes resistor R17, resistor R26, resistor R27, resistor R29, resistor R31, resistor R32, resistor R33, resistor R34, NPN transistor Q3, NPN transistor Q4, NPN transistor Q5 and NPN transistor Q6, the emitter of the NPN transistor Q5 is grounded, the collector of the NPN transistor Q5 is connected to the base of the NPN transistor Q3, the collector of the NPN transistor Q5 is connected to the base of the NPN transistor Q3 The node series resistor R32 between the electrodes is connected to the boost output terminal of the charging and boosting circuit, the emitters of the NPN transistor Q3 are respectively connected to the input interface module and the output interface module, and the resistor R26 and the resistor R29 are connected in series to the charging terminal. Between the boost output terminal of the boost circuit and the ground, the node between the resistor R26 and the resistor R29 is connected to the collector of the NPN transistor Q3, the emitter of the NPN transistor Q6 is grounded, and the collector of the NPN transistor Q6 The electrode is connected to the base of the NPN transistor Q4, the node series resistance R34 between the collector of the NPN transistor Q6 and the base of the NPN transistor Q4 is connected to the boost output terminal of the charging and boosting circuit, and the emitters of the NPN transistor Q4 are respectively Connect the input interface module and the output interface module, the resistor R27 and the resistor R31 are connected in series between the boost output terminal of the charging and boosting circuit and the ground, and the node between the resistor R27 and the resistor R31 is connected to the NPN transistor Q4 The collector of the NPN transistor Q5 is connected in series with resistors R33 and R17 to the base of the NPN transistor Q6, and the node between the resistors R33 and R17 is connected to the control output terminal of the main control module. 3. The mobile power supply according to claim 1 or 2, further comprising a power display module connected to the main control module. 4. The mobile power supply according to claim 3, wherein the power display module is realized by LED digital tubes. 5. The mobile power supply according to claim 1 or 2, characterized in that: the main control module is implemented by a single-chip microcomputer model HT66F004-20. 6. The mobile power supply according to claim 1 or 2, wherein the rechargeable battery is a lithium battery. 7. The mobile power supply according to claim 6, characterized in that: the protection circuit is realized by a chip of model XB8089D. 8. The mobile power supply according to claim 1 or 2, characterized in that: the charging and boosting circuit is implemented by a chip of the type BQ25895.