WO2017004875A1

WO2017004875A1 - Mobile power supply

Info

Publication number: WO2017004875A1
Application number: PCT/CN2015/088645
Authority: WO
Inventors: 雷灿伙
Original assignee: 深圳罗马仕科技有限公司
Priority date: 2015-07-03
Filing date: 2015-08-31
Publication date: 2017-01-12
Also published as: CN104967170A; CN104967170B

Abstract

A mobile power supply (100) comprises a battery (110), a first interface (120), a first monitoring circuit (130), a second monitoring circuit (140), and a control circuit (150). The first interface is used to be electrically connected to an external device. The first monitoring circuit is electrically connected to the first interface, and is used to monitor and output charge-discharge properties of the external device. The second monitoring circuit is electrically connected to the battery, and is used to monitor and output a current electric quantity of the battery. The control circuit is electrically connected to the first monitoring circuit and the second monitoring circuit, separately, and is used to control whether to transmit power between the mobile power supply and the external device according to the charge-discharge properties and the current electric quantity of the battery. In the mobile power supply, a first interface can serve as an input interface or an output interface, thereby improving the utilization rate of a device.

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】

As an energy supply device for electronic devices, mobile power is widely used for its advantages of being portable. The traditional mobile power supply has a single interface function, which is not conducive to improving the utilization of the device.

[Summary of the Invention]

Based on this, it is necessary to provide a mobile power source with high equipment utilization.

A mobile power supply, including:

a battery; a first interface for electrically connecting to an external device;

a first monitoring circuit electrically connected to the first interface, configured to monitor a charge and discharge attribute of the external device and output the same;

a second monitoring circuit electrically connected to the battery for monitoring a current power of the battery and outputting;

And a control circuit electrically connected to the first monitoring circuit and the second monitoring circuit, respectively, configured to control whether the mobile power source and the external device are in accordance with the charging and discharging attribute and the current power of the battery Power transmission between.

The first interface of the mobile power source may be connected to an external device whose charging/discharging property is a charging property or a discharging property. The first monitoring circuit monitors the charging and discharging properties of the accessed external device, so that the control circuit can determine whether to transmit power between the mobile power source and the access device according to the monitored charging and discharging attribute and the current power of the battery, that is, Whether the mobile power source discharges to the external device or the connected external device charges the mobile power source. In the above mobile power source, the first interface can be used as an input interface or an output interface, thereby improving the utilization rate of the device.

[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.

[Correct according to Rule 26 14.09.2015]
1 is a schematic block diagram of a mobile power supply in an embodiment;

[Correct according to Rule 26 14.09.2015]
2 is a schematic block diagram of a mobile power supply in another embodiment;

[Correct according to Rule 26 14.09.2015]
3 is a circuit schematic diagram of a voltage conversion circuit of a mobile power supply in a specific embodiment; FIG. 4 is a circuit schematic diagram of a control circuit of the mobile power supply in the embodiment shown in FIG. 3; Circuit diagram of the protection circuit of the mobile power supply.

【detailed description】

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the understanding of the present disclosure will be more fully understood.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 , the mobile power source 100 in an embodiment includes a battery 110 , a first interface 120 , a first monitoring circuit 130 , a second monitoring circuit 140 , a control circuit 150 , and a voltage conversion circuit 160 .

The battery 110 is used as an energy storage unit for energy storage. The battery 110 may be a single lithium battery or a lithium battery formed of a plurality of lithium batteries.

The first interface 120 is for connecting to an external device. The external device can be an electronic device to be charged or an energy-supplied device. The charging and discharging properties of the electronic device to be charged (such as a mobile phone, a tablet, a digital camera, etc.) are charging properties, and the charging and discharging properties of the power supply device (such as a power adapter) are discharge properties. Therefore, the first interface 120 can be used as an input interface or an output interface, so that the requirements of the user at different times can be met, and the utilization rate of the device is improved. In this embodiment, the first interface 120 is a USB-C type interface.

The first monitoring circuit 130 is coupled to the first interface 120 for monitoring the charge and discharge properties of the external device connected to the first interface 120 and outputting its attributes. For example, when the accessed device is an electronic device to be charged, the first monitoring circuit 130 reads its charging attribute after shaking hands with it and outputs it to the control circuit 150. In this embodiment, the first monitoring circuit 130 is further configured to monitor a power supply voltage of the accessed external device. The power supply voltage of the external device may be a power supply voltage supplied from the external device to the mobile power source 100, or may be a power supply voltage supplied to the external power device by the external power device 100.

The second monitoring circuit 140 is coupled to the battery 110 for monitoring the current amount of battery 110 in real time and outputting the current amount of power. The power of the battery 110 is monitored by the second monitoring circuit 140, so that the problem of overcharging and over-discharging of the battery 110 can be effectively avoided.

The control circuit 150 is connected to the first monitoring circuit 130 and the second monitoring circuit 140, respectively. The control circuit 150 is configured to receive the charge and discharge attribute output by the first monitoring circuit 130 and the current power of the battery 110 output by the second monitoring circuit 140. The control circuit 150 controls whether or not power transmission is performed between the mobile power source 100 and the external device based on the received charge and discharge attribute and the current power of the battery 110. Specifically, when the charge and discharge attribute of the external device is the charging attribute and the current power of the battery 110 is greater than the minimum discharged power, the control circuit 150 controls the mobile power source 100 to enter the discharge mode, and the external power device 100 charges the external device. When the charge and discharge attribute of the external device is the charging attribute and the current power of the battery 110 is less than or equal to the minimum discharged power, the control circuit 150 rejects the power transmission request of the external device, that is, controls the power transmission between the mobile power source 100 and the external device. . When the charge and discharge attribute of the external device is the discharge attribute and the current charge of the battery 110 is less than the maximum charge amount, the control circuit 150 controls the mobile power source 100 to enter the charging mode, and the mobile device 100 charges the external power source 100. When the charge and discharge attribute of the external device is the discharge attribute and the current power of the battery 110 is greater than or equal to the maximum charge amount, the control circuit 150 rejects the power transfer request of the external device, that is, controls the power transfer between the mobile power source 100 and the external device. .

When the control circuit 150 controls the mobile power source 100 to enter the discharge mode, it switches its own charge and discharge attribute to the discharge attribute. The control circuit 150 generates a discharge command according to the power supply voltage of the external device monitored by the first monitoring circuit 130 and outputs the discharge command to the voltage conversion circuit 160. The voltage conversion circuit 160 converts the voltage of the battery 110 according to the discharge command, and converts it into a supply voltage required by the external device, and then outputs it to the connected external device through the first interface 120. In this embodiment, the voltage conversion circuit 160 can convert the voltage of the battery 110 into one of five voltages of 5V, 12V, and 20V according to the requirements of the external device, thereby implementing multiple voltage output of the first interface 120, thereby meeting different power supplies. The demand for external devices for voltage further increases the utilization of the device.

When controlling the mobile power source 100 to enter the charging mode, the control circuit 150 switches its own charging and discharging attribute to the charging attribute, and the control circuit 150 generates a charging command according to the power supply voltage of the external device monitored by the first monitoring circuit 130 and outputs the charging command to the power supply voltage. Voltage conversion circuit 160. The voltage conversion circuit 160 converts the power supply voltage outputted by the external device according to the charging command, and converts it into a charging voltage that the battery 110 can accept, and then charges the battery 110. In this embodiment, the voltage conversion circuit 160 can convert the voltage output by the external device into the charging voltage of the battery 110, and then charge the battery 110 to implement multi-voltage input of the first interface 120, thereby enabling energy devices with different power supply voltages to be used. The mobile power source 100 is charged, which improves the convenience of the use of the mobile power source 100.

The control circuit 150 is further configured to monitor whether the first monitoring circuit 130 is working normally, and control the voltage conversion circuit 160 to stop working when the first monitoring circuit 130 is not working normally, that is, turn off the input and output of the mobile power source 100, thereby ensuring the mobile power source. 100 is safe to use.

The first interface 120 in the above mobile power source 100 can be connected to an external device whose charging/discharging attribute is a charging attribute or a discharging attribute. The first monitoring circuit 130 monitors the charge and discharge properties of the accessed external device, so that the control circuit 150 can determine whether to power between the mobile power source 100 and the access device according to the monitored charge and discharge attribute and the current power of the battery. The transmission, that is, whether the mobile power source 100 discharges to the external device or the connected external device charges the mobile power source 100. In the above mobile power supply 100, the first interface 120 can serve as an input interface or an output interface, thereby improving the utilization rate of the device. The first interface 120 in the mobile power source 100 is capable of supporting multiple voltage inputs and multiple voltage outputs, thereby enabling it to power different types of electronic devices or to charge themselves by different types of powered devices, thereby improving the device's Appropriate, can meet the user's use needs to the utmost, and improve the convenience during use.

2 is a mobile power supply 200 in another embodiment, the mobile power supply 200 includes a battery 202, a first interface 204, a first monitoring circuit 206, a second monitoring circuit 208, a control circuit 210, and a voltage conversion circuit 212. Also included are an output interface 214, a third monitoring circuit 216, a protection circuit 218, and a display circuit 220. The portions of the battery 202, the first interface 204, the first monitoring circuit 206, the second monitoring circuit 208, the control circuit 210, and the voltage conversion circuit 212 that have been described in the foregoing embodiments are not described herein.

The output interface 214 is for connection with a mobile electronic device whose charging and discharging properties are charging properties, that is, the output interface 214 serves only as an output interface. In this embodiment, the output interface 214 is a USB-A type interface or a USB-B type interface, and the output thereof is a current of 5V/1A or 5V/2A. There are a plurality of output interfaces 214 so that multiple mobile electronic devices can be simultaneously charged.

The third monitoring circuit 216 is connected to the output interface 214 for monitoring the power supply voltage of the mobile electronic device accessed by the output interface 214 and outputting it to the control circuit 210. The control circuit 210 generates a discharge command output to the voltage conversion circuit 212 according to the input supply voltage. The voltage conversion circuit 212 converts the voltage of the battery 202 and then charges the accessed mobile electronic device through the output interface 214.

The protection circuit 218 is coupled to the battery 202 for overcurrent, overvoltage, short circuit, overcharge, and overdischarge protection of the battery 202. The display circuit 220 is connected to the control circuit 210 for displaying the working mode and the power information of the mobile power source 200, so that the user can grasp the specific situation of the mobile power source 200 in time. In this embodiment, the control circuit 210 also performs predictive evaluation on the remaining charging time or the remaining discharging time according to the current charging and discharging state, and then displays it through the display circuit 220 for the user to refer to. The display circuit 220 can display corresponding information through the bright state of the plurality of LED lights, and can also display relatively intuitively through the LED display screen or the LCD display screen.

3 is a circuit schematic diagram of a voltage conversion circuit of a mobile power supply in a specific embodiment; FIG. 4 is a circuit schematic diagram of a control circuit of the mobile power supply in the embodiment shown in FIG. 3; Circuit diagram of the protection circuit of the mobile power supply. In this embodiment, the USB1 interface is a USB-C type interface, and the USB2 is a 5V voltage output interface (USB-A type interface or USB-B type interface). U1 and U5 are voltage conversion chips for voltage conversion. U2 is a control chip for controlling the entire working process of the mobile power source. In this embodiment, the display circuit is composed of four illuminating LEDs, when one illuminating LED is bright, the electric quantity is between 25% and 0%; when the two illuminating LEDs are bright, the electric quantity is between 50% and 25%; When the three LEDs are lit, the power is between 75% and 50%; when the four LEDs are all bright, the power is between 100% and 75%. U4 is a protection chip.

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 supply, including:

battery;

a first interface, configured to be electrically connected to an external device;

a first monitoring circuit electrically connected to the first interface, configured to monitor a charge and discharge attribute of the external device and output the same;

a second monitoring circuit electrically connected to the battery for monitoring a current power of the battery and outputting;

And a control circuit electrically connected to the first monitoring circuit and the second monitoring circuit, respectively, configured to control whether the mobile power source and the external device are in accordance with the charging and discharging attribute and the current power of the battery Power transmission between.
The mobile power supply according to claim 1, wherein the charge and discharge attribute comprises a charging attribute and a discharging attribute;

The control circuit controls the mobile power source to enter a discharge mode when the charge and discharge attribute of the external device is a charging attribute and the current power of the battery is greater than a minimum discharge amount, and the external device is charged by the mobile power source;

The control circuit controls the mobile power source to enter a charging mode when the charge and discharge attribute of the external device is a discharge attribute and the current power of the battery is less than the maximum charge amount, and the mobile power source is charged by the external device.
The mobile power supply according to claim 2, wherein the control circuit is further configured to switch the charge and discharge attribute of the mobile power source to a charging attribute when the mobile power source is controlled to enter a charging mode.
The mobile power supply according to claim 3, wherein the control circuit is further configured to switch the charge and discharge attribute of the mobile power source to a discharge attribute when the mobile power source enters a discharge mode.
The mobile power supply of claim 2, further comprising a voltage conversion circuit, wherein the voltage conversion circuit is electrically connected to the control circuit and the battery;

The first monitoring circuit is further configured to monitor a power supply voltage of the external device;

The control circuit is further configured to generate a discharge command according to the supply voltage when the mobile power source is in a discharge mode; the voltage conversion circuit is configured to convert an output voltage of the battery into the external according to the discharge command The external device is charged after the supply voltage of the device.
The mobile power supply according to claim 5, wherein the control circuit is further configured to generate a charging command according to the power supply voltage when the mobile power source is in a charging mode;

The voltage conversion circuit is further configured to convert the power supply voltage output by the external device into a charging voltage of the battery according to the charging instruction, and then charge the mobile power source.
The mobile power supply according to claim 5, wherein the control circuit is further configured to monitor whether the first monitoring circuit is working normally, and control the voltage conversion circuit when the first monitoring circuit is not working normally. stop working.
The mobile power supply of claim 5, further comprising:

An output interface, configured to be electrically connected to the mobile electronic device whose charging and discharging properties are charging properties;

a third monitoring circuit electrically connected to the output interface for monitoring a power supply voltage of the mobile electronic device connected to the output interface;

The control circuit is further configured to generate a discharge command according to the power supply voltage monitored by the third monitoring circuit and output the same to the voltage conversion circuit.
The mobile power supply of claim 8 wherein said output interface is a 5V voltage output interface.
The mobile power supply of claim 1, wherein the first interface is a USB-C type interface.
The mobile power supply of claim 1 further comprising a protection circuit electrically coupled to said battery for overcurrent, overvoltage, short circuit, overcharge, and overdischarge protection of said battery.
The mobile power supply according to claim 1, further comprising a display circuit; wherein the display circuit is connected to the control circuit for displaying an operation mode of the mobile power source and power amount information.
The mobile power supply according to claim 12, wherein the power amount information displayed by the display circuit comprises a battery power and a remaining charge and discharge time.