WO2016149999A1

WO2016149999A1 - Mobile power supply

Info

Publication number: WO2016149999A1
Application number: PCT/CN2015/078974
Authority: WO
Inventors: 温美婵; 周永力; 刘胥和
Original assignee: 深圳市华宝新能源有限公司
Priority date: 2015-03-25
Filing date: 2015-05-14
Publication date: 2016-09-29
Also published as: CN104779667A; CN104779667B

Abstract

The present invention relates to a mobile power supply, comprising a shell and a rechargeable battery, the rechargeable battery being arranged in the shell and fixed through the shell; also comprising a printed circuit board arranged in the shell and a first interface arranged on a side wall of the shell; the printed circuit board is separately and electrically connected to the rechargeable battery and the first interface; the first interface is configured to connect a power adapter; the first interface is a USB C type interface; and the first interface is provided with at least four power supply pin terminals. The mobile power supply can realize quick charging.

Description

mobile power

[Technical Field]

The present invention relates to the field of power supply technologies, and in particular, to a mobile power supply.

【Background technique】

Electronic devices such as mobile phones and tablets have gradually become a necessity for people's lives, and mobile power supplies have become more and more widely used as energy supply devices for electronic devices. Traditional mobile power supplies use the universal serial bus extensively (Universal Serial Bus, USB) 2.0, USB3.0 connector to charge itself. The common mobile power input ports are Micro-USB connectors. Since the Micro-USB's charging current supports up to 5V and 1.8A, it can only provide a lower charging voltage and a smaller charging current. Therefore, the power supplied by the USB2.0 and USB3.0 connectors will charge the mobile power source relatively slowly, resulting in a longer charging time of the mobile power source.

[Summary of the Invention]

Based on this, it is necessary to provide a mobile power source that can be quickly charged.

A mobile power source includes a housing and a rechargeable battery, the rechargeable battery is disposed in the housing and fixed by the housing, and further includes a printed circuit board disposed inside the housing and disposed on the housing a first interface of the sidewall; the printed circuit board is electrically connected to the rechargeable battery, and the first interface is electrically connected; the first interface is used for connecting with a power adapter; and the first interface is USB A C-type interface; the first interface is provided with at least four power pin terminals.

In one embodiment, the method further includes a second interface disposed on the sidewall of the housing, the second interface for connecting to an electronic device to be charged; the second interface being electrically connected to the printed circuit board connection.

In one of the embodiments, the second interface includes at least one USB Type C interface.

In one embodiment, the second interface is one and the second interface is a USB A-type interface.

In one embodiment, the second interface is two or more, and the second interface includes at least one USB Type A interface.

In one embodiment, the printed circuit board is provided with a processing circuit; the processing circuit includes a charging circuit, a discharging circuit, a protection circuit, and a control circuit; the charging circuit and the control circuit and the protection circuit respectively And the first interface is electrically connected; the discharge circuit is electrically connected to the control circuit, the protection circuit and the second interface respectively; and the protection circuit is further electrically connected to the rechargeable battery.

In one embodiment, the rechargeable battery is a battery pack formed by a plurality of battery cells connected in parallel; the charging circuit is a step-down circuit; and the discharging circuit is a boosting circuit.

In one embodiment, the rechargeable battery is a lithium battery.

In one embodiment, the control circuit is further electrically connected to the first interface; the control circuit is configured to detect whether the power adapter is connected to the first interface, and detecting the power source Receiving, after the adapter is connected to the first interface, communicating with the power adapter to determine a type of the power adapter according to a preset communication protocol; the control circuit is further configured to control the power adapter according to a type of the power adapter A suitable voltage is output and the voltage is stepped down by the charging circuit to charge the rechargeable battery.

In one embodiment, the control circuit is further electrically connected to the second interface; the control circuit is further configured to detect whether an electronic device to be charged is connected to the second interface, and After the electronic device to be charged accesses the second interface, communicates with the electronic device to be charged to determine the type of the electronic device and its power state; the control circuit is further configured to use the type of the electronic device and The state of charge controls the discharge circuit to boost the battery voltage and output a suitable voltage to the electronic device to be charged.

In one embodiment, the protection circuit is configured to overvoltage, overcurrent, overcharge, overdischarge, and overtemperature protection of the rechargeable battery.

In one embodiment, the mobile power source further includes a display screen and an illumination lamp; the processing circuit further includes: a display circuit electrically connected to the control circuit and the display screen; the display circuit is configured to The display screen drives the display screen to display the power of the mobile power source and the battery state under the control of the control circuit; the lighting circuit is electrically connected to the control circuit and the illumination lamp; and the illumination circuit is further used for The illumination lamp is driven to provide an illumination function under the control of the control circuit.

In one embodiment, the mobile power source further includes a control button connected to the control circuit for the user to perform corresponding operations on the display function and the illumination function of the mobile power source.

In one of the embodiments, the display screen is an LED display or an LCD display.

In one of the embodiments, the illuminating light is an LED light.

In one embodiment, the first interface is further configured to supply power to the electronic device to be charged after being connected to the electronic device to be charged.

In one embodiment, the mobile power source further includes the power adapter; the mobile power source is provided with a receiving cavity for accommodating the power adapter; the power adapter includes an input interface and an output interface; Connected to a power supply; the output interface is USB The C-type interface is configured to be electrically connected to the first interface.

In one embodiment, the first interface is a USB C-type interface female; the output interface of the power adapter is a USB Type C interface male seat.

In one embodiment, the housing includes a first housing and a second housing, the first housing and the second housing being cooperatively mounted and forming a receiving space for receiving and fixing the rechargeable battery The first interface and the printed circuit board.

The above mobile power supply uses a USB C-type interface to charge the mobile power source, USB The C-type interface is provided with at least 4 power pin terminals, which can provide a large output current, so it can provide a large current power for the mobile power source to achieve fast charging of the mobile power source.

[Description of the Drawings]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain drawings of other embodiments according to the drawings without any creative work.

1 is a structural exploded view of a mobile power supply in an embodiment;

2 is a circuit block diagram of a mobile power supply in the embodiment shown in FIG. 1.

【detailed description】

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

1 is a structural exploded view of a mobile power supply in an embodiment, and FIG. 2 is a circuit block diagram of a mobile power supply in the embodiment shown in FIG. 1. The mobile power supply in this embodiment will be described in detail below with reference to FIG. 1 and FIG. A mobile power source includes a housing, a rechargeable battery 120, a first interface 130, a second interface 140, and a printed circuit board 150. The housing includes a first housing 105 and a second housing 110. The first housing 105 and the second housing 110 are cooperatively mounted and form a receiving space for receiving and fixing the rechargeable battery 120, the first interface 130, the second interface 140, and the printed circuit board 150. The first interface 130 and the second interface 140 are disposed on a sidewall of the housing. The first interface 130 and the second interface 140 may be disposed on the same side of the housing or on different sides of the housing. In this embodiment, the first interface 130 and the second interface 140 are disposed on the same side.

The rechargeable battery 120 is used to store electrical energy to output electrical energy when power is required. The rechargeable battery 120 employs a battery pack in which a plurality of lithium battery cells are connected in parallel. Since the standard voltage of the battery cell is about 3.7V, the voltage of the rechargeable battery 120 is also about 3.7V. Therefore, in the process of charging the mobile power source, the rechargeable battery 120 can be charged only after a single step-down process on the input voltage; in the process of discharging the mobile power source, only a single liter of the voltage of the rechargeable battery 120 is required. After the pressure processing, the external electronic device can be powered. This single topology simplifies the structure of the mobile power supply and reduces its weight by reducing the number of external components and reducing control. A battery pack formed by connecting two or more battery cells in series may have a battery pack voltage higher or lower than a voltage output by the adapter or a charging voltage required by the electronic device during charging and discharging, so that both charging and discharging processes are involved. To the boost and buck modes, the control process is difficult, and the number of peripheral components is increased, thereby increasing the cost, size and weight of the mobile power supply. The mobile power source of the present invention can solve this problem well.

The first interface 130 is coupled to the printed circuit board 150 for connection to a power adapter via a data line. The first interface 130 adopts USB C-Type interface. In this embodiment, the first interface 130 is a USB. The C-Type interface is an interface socket with at least 24 pin terminals and at least 4 power pin terminals (generally the upper 4th and 9th pin terminals and the lower 4th) , the 9th pin terminal). Therefore, it can overcome the problem that the number of power pin terminals in the conventional USB interface (USB1.0, USB2.0, and USB3.0) is insufficient to provide only a small output/input current, resulting in slow charging of the mobile power source. The first interface 130 can provide a large current power for the mobile power source to achieve fast charging of the mobile power source. In this embodiment, the power adapter needs to have USB The C-type interface is matched to the USB-type interface bus and supports the fast charging protocol just like the mobile power supply.

The second interface 140 is electrically connected to the printed circuit board 150 for connecting to the electronic device to be charged through the data line. The second interface 140 may be provided in plurality to facilitate charging a plurality of electronic devices at the same time. In this embodiment, the second interface 140 adopts USB. A-Type interface, and only set to one. In other embodiments, the second interface 140 is provided in plurality, wherein at least one USB is set. The C-Type interface enables fast charging of electronic devices.

The printed circuit board 150 is also connected to the rechargeable battery 120. A processing circuit 160 is disposed on the printed circuit board 150. Processing circuit 160 is used to manage and control the mobile power source. The processing circuit 160 includes a control circuit 162, a charging circuit 164, a discharging circuit 166, and a protection circuit 168. The control circuit 162 is electrically connected to the charging circuit 164, the discharging circuit 166, and the protection circuit 168, respectively. The protection circuit 168 is electrically connected to the charging circuit 164, the discharging circuit 166, and the rechargeable battery 120, respectively. In this embodiment, since the rechargeable battery 120 is formed by connecting a plurality of battery cells in parallel, the voltage thereof is only about 3.7V, so the charging circuit 164 is in a single step-down mode, and the discharging circuit 166 is in a single boost mode, thereby being able to reduce The number of peripheral components reduces control difficulty, simplifies the structure of the mobile power supply and reduces its weight.

In this embodiment, the control circuit 162 is also electrically connected to the first interface 130 and the second interface 140, respectively. The control circuit 162 is configured to detect whether the power adapter is plugged into the first interface 130. The control circuit 162 performs data communication with the power adapter after detecting that the power adapter is connected to the first interface 130, thereby determining the type of the power adapter according to a preset communication protocol. Different power adapters and control circuits 162 will use different communication protocols, so the type of power adapter can be confirmed according to the communication protocol used in the data communication process. After determining the type of the power adapter, the control circuit 162 controls the output voltage of the power adapter according to the communication data, so that the power adapter can output a suitable voltage, and the mobile power source can input at an optimal power, thereby reducing the mobile power source itself. The charging time increases the charging efficiency and achieves the purpose of fast charging. In this embodiment, the output voltage of the power adapter may be 5V, 12V, 20V, or the like. The charging circuit 164 performs a step-down process on the voltage output from the power adapter, and then charges the rechargeable battery 120 under the protection of the protection circuit 168. In the present embodiment, the control circuit 162 monitors and analyzes the data such as the capacity of the rechargeable battery 120, thereby charging the rechargeable battery 120 by means of precharge, constant current charging, or constant voltage charging according to the state of the rechargeable battery 120. In order to ensure the charging efficiency and life of the rechargeable battery 120. At the same time, the control circuit 162 also monitors the current of the rechargeable battery 120 and the voltage of each of the cells, and calculates the capacity of the rechargeable battery 120. When the rechargeable battery 120 is full, the control charging circuit 164 stops charging, and the rechargeable battery 120 is protected from overcharging.

The control circuit 162 is further configured to detect whether the electronic device to be charged is connected to the second interface 140. The control circuit 162 performs data communication with the electronic device after detecting that the electronic device is connected to the second interface 140, thereby determining the type of the electronic device and its power state. Different electronic devices and control circuits 162 will adopt different communication protocols, so the type of electronic devices can be confirmed according to the communication protocol used in the data communication process. At the same time, through communication with the electronic device, the control circuit 162 can acquire the state of charge of the electronic device. The control circuit 162 controls the discharge circuit 166 to boost the voltage of the rechargeable battery 120 according to the type of the electronic device and the state of charge, and outputs an appropriate voltage to the electronic device to charge the electronic device. Since the mobile power source can ensure optimal power input of the electronic device, the charging time of the electronic device is reduced, and the discharge efficiency is improved. In the present embodiment, the control circuit 162 also monitors the current of the rechargeable battery 120 during discharge and the voltage of each cell, and calculates the remaining capacity of the rechargeable battery 120. When the capacity is insufficient, the control circuit 162 controls the discharge circuit 166 to stop discharging, and protects the rechargeable battery 120 from excessive discharge, thereby affecting the life of the rechargeable battery 120.

In the present embodiment, the control circuit 162 can perform charge and discharge control by means of DA conversion, I2C, SPI, and PWM or pulse control. The protection circuit 168 is used to protect the rechargeable battery 120 from overvoltage, overcurrent, overcharge, overdischarge, and overtemperature to ensure the service life of the rechargeable battery 120.

The above mobile power supply uses a USB C-type interface to charge the mobile power source, USB The C-type interface is provided with at least 4 power pin terminals, which can provide a large output current, so it can provide a large current power for the mobile power source to achieve fast charging of the mobile power source. At the same time, the control circuit 162 can adjust the charging voltage and the discharging voltage to enable the mobile power source to input and output with optimal power, thereby reducing the charging time of the mobile power source or the charging time of the external electronic device, and improving the charging or discharging efficiency of the mobile power source.

In another embodiment, the mobile power source further includes a display screen and an illumination lamp, and correspondingly the processing circuit further includes a display circuit and a lighting circuit. among them. The display circuit is respectively connected to the control circuit and the display screen, and is configured to drive the display screen to display the power quantity and the charge and discharge state of the rechargeable battery under the control of the control circuit. The display can be an LED or LCD display. The lighting circuit is respectively connected with the control circuit and the illumination lamp for driving the illumination lamp to provide illumination function under the control of the control circuit. In this embodiment, the illumination lamp is an LED lamp. The mobile power source also includes a control button for the user to perform corresponding operations on the display of the mobile power source and the lighting function.

In another embodiment, the mobile power source includes a housing, a rechargeable battery, a first interface, and a printed circuit board. The first interface is used for connecting to the power adapter, and is also used for connecting with the electronic device to be charged, that is, the input interface and the output interface of the mobile power source are all USB The first interface of the C type has a simple structure. In this embodiment, the first interface is only set to one. In other embodiments, the first interface may also be set to at least two. In this embodiment, the charging circuit and the discharging circuit in the processing circuit on the printed circuit board are both connected to the first interface. Therefore, the control circuit in the processing circuit needs to judge the device connected in the first interface to determine whether it is a power adapter or an electronic device to be charged, so as to control the charging and discharging process of the rechargeable battery according to the access device.

In another embodiment, the mobile power source further includes a power adapter. The mobile power supply is provided with a receiving cavity for accommodating the power adapter. The power adapter includes an input interface for connecting to a power supply, and an output interface for matching the first interface of the mobile power source. A type C interface that can be electrically connected to the first interface.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A mobile power source includes a housing and a rechargeable battery, the rechargeable battery is disposed in the housing and fixed by the housing, and further includes a printed circuit board disposed inside the housing and disposed on the a first interface of the sidewall of the housing; the printed circuit board is electrically connected to the rechargeable battery, and the first interface is electrically connected; the first interface is used for connecting with a power adapter; One interface is USB A C-type interface; the first interface is provided with at least four power pin terminals.
The mobile power supply of claim 1 further comprising a second interface disposed on the sidewall of the housing, the second interface for connecting to an electronic device to be charged; the second interface The printed circuit board is electrically connected.
The mobile power supply of claim 2 wherein said second interface comprises at least one USB Type C interface.
The mobile power supply of claim 2, wherein the second interface is one and the second interface is a USB Type A interface.
The mobile power supply according to claim 2, wherein the second interface is two or more, and the second interface comprises at least one USB Type A interface.
The mobile power supply according to claim 2, wherein said printed circuit board is provided with a processing circuit; said processing circuit comprises a charging circuit, a discharging circuit, a protection circuit and a control circuit; said charging circuit respectively said The control circuit, the protection circuit and the first interface are electrically connected; the discharge circuit is electrically connected to the control circuit, the protection circuit and the second interface respectively; the protection circuit is further The rechargeable battery is electrically connected.
The mobile power supply according to claim 6, wherein the rechargeable battery is a battery pack formed by a plurality of battery cells connected in parallel; the charging circuit is a step-down circuit; and the discharging circuit is a boosting circuit.
The mobile power supply according to claim 7, wherein said rechargeable battery is a lithium battery.
The mobile power supply according to claim 7, wherein the control circuit is further electrically connected to the first interface; the control circuit is configured to detect whether the power adapter is connected to the first interface, And after detecting that the power adapter is connected to the first interface, communicating with the power adapter to determine a type of the power adapter according to a preset communication protocol; the control circuit is further configured to be used according to the power adapter The type controls the power adapter to output a suitable voltage and to step down the voltage by the charging circuit to charge the rechargeable battery.
The mobile power supply according to claim 7, wherein the control circuit is further electrically connected to the second interface; the control circuit is further configured to detect whether an electronic device to be charged is connected to the second interface And detecting, after detecting that the electronic device to be charged accesses the second interface, communicating with the electronic device to be charged to determine the electronic device type and its power state; the control circuit is further configured to: Controlling the discharge circuit to boost the battery voltage according to the type of the electronic device and its power state, and outputting a suitable voltage to the electronic device to be charged.
The mobile power supply according to claim 6, wherein the protection circuit is configured to perform overvoltage, overcurrent, overcharge, overdischarge, and overtemperature protection on the rechargeable battery.
The mobile power supply according to claim 1, wherein the mobile power source further comprises a display screen and an illumination lamp; and the processing circuit further comprises:

a display circuit electrically connected to the control circuit and the display screen; the display circuit is configured to drive the display screen to display a quantity of the mobile power source and a battery state under the control of the control circuit;

a lighting circuit electrically connected to the control circuit and the illumination lamp; the illumination circuit is further configured to drive the illumination lamp to provide an illumination function under the control of the control circuit.
The mobile power supply according to claim 12, wherein the mobile power source further comprises a control button connected to the control circuit for the user to perform corresponding operations on the display function and the illumination function of the mobile power source.
The mobile power supply according to claim 12, wherein the display screen is an LED display screen or an LCD display screen.
The mobile power supply of claim 12 wherein said illumination light is an LED light.
The mobile power source according to claim 1, wherein the first interface is further configured to supply power to the electronic device to be charged after being connected to the electronic device to be charged.
The mobile power supply according to claim 1, wherein the mobile power source further comprises the power adapter; the mobile power source is provided with a receiving cavity for accommodating the power adapter; the power adapter includes an input interface and an output An interface; the input interface is configured to be connected to a power supply; the output interface is a USB The C-type interface is configured to be electrically connected to the first interface.
The mobile power supply according to claim 17, wherein the first interface is a USB C-type interface female; the output interface of the power adapter is a USB Type C interface male seat.
The mobile power supply according to claim 1, wherein the housing comprises a first housing and a second housing, the first housing and the second housing being cooperatively mounted and forming a receiving space for The rechargeable battery, the first interface, and the printed circuit board are housed and fixed.