CN110597375B

CN110597375B - External equipment power supply device

Info

Publication number: CN110597375B
Application number: CN201911104362.4A
Authority: CN
Inventors: 汤鑫; 黄海峰
Original assignee: Hiscene Information Technology Co Ltd
Current assignee: Hiscene Information Technology Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-02-14
Anticipated expiration: 2039-11-13
Also published as: CN110597375A

Abstract

An object of the present application is to provide an external device power supply apparatus, including: a first wire, a first end of which is coupled with the first connecting terminal; an energy storage module; the first input end of the control module is coupled with the second end of the first lead, and the second input end of the control module is coupled with the output end of the energy storage module; a second wire, wherein a first end is coupled with the output end of the control module, and a second end is coupled with the second connecting terminal; and a signal transmission line having a first end for connecting the first external device and a second end for connecting the second external device. The method and the device can prolong the continuous working time of the external device and the personal mobile device, and simultaneously provide uninterrupted communication between the external device and the personal mobile device.

Description

External equipment power supply device

Technical Field

The present application relates to the field of electrical communications, and more particularly, to a technique for powering an external device.

Background

With the development of the times, electronic equipment capable of realizing various complex functions is widely used, the production efficiency of people is greatly improved, and the living standard of people is promoted to be improved. Among these electronic devices, electronic devices that communicate with personal mobile devices such as cellular phones are not required. In the process of communicating with the personal mobile device, in some cases, the electronic devices can be powered by the personal mobile device during operation, for example, the electronic devices can transmit information to the personal mobile device and receive/transmit information through the cable and power from the personal mobile device. However, the amount of power stored in the personal mobile device is limited, and in the case of supplying power to both the personal mobile device itself and other devices, the power supply of the personal mobile device is greatly shortened, and the user has to remove the power-using device and charge the personal mobile device when the power of the personal mobile device is exhausted.

Disclosure of Invention

An object of the present application is to provide an external device power supply apparatus.

According to one aspect of the present application, there is provided an external device power supply apparatus. The external device power supply apparatus includes:

a first wire, a first end of which is coupled to a first connection terminal, the first connection terminal being used for connecting a power interface of a first external device;

an energy storage module;

a first input end of the control module is coupled to the second end of the first wire, and a second input end of the control module is coupled to the output end of the energy storage module;

a second wire, a first end of which is coupled to the output end of the control module, and a second end of which is coupled to a second connection terminal, wherein the second connection terminal is used for connecting a power input interface of a second external device and supplying power to the second external device through the power input interface of the second external device; and the number of the first and second groups,

a signal transmission line for communicating between the first external device and the second external device and maintaining the communication between the first external device and the second external device after the energy storage module starts to discharge through the first wire; wherein a first end of the signal transmission line is used for connecting the first external device, and a second end of the signal transmission line is used for connecting the second external device.

In some embodiments, the external device power supply apparatus further includes a discharge control unit, an input terminal of the discharge control unit is coupled to the output terminal of the energy storage module, and an output terminal of the discharge control unit is coupled to the first connection terminal; when the discharge control unit is switched on, the output end of the energy storage module is switched on with the first connecting terminal.

In some embodiments, the external device power supply apparatus further includes a signal transmission control unit configured to control the signal transmission line to be turned on or off.

In some embodiments, the signal transmission control unit includes a line switching module and a line control module;

the first end of the line switching module is coupled to the first end of the signal transmission line, the second end of the line switching module is coupled to the second end of the signal transmission line, and the third end of the line switching module is coupled to the communication output end of the line control module;

the first end of the signal transmission line is connected with the second end of the signal transmission line, or the first end of the signal transmission line is connected with the line control module; wherein the first external device communicates with the line control module when the first end of the signal transmission line is connected to the line control module.

In some embodiments, a control signal output terminal of the line control module is coupled to a control terminal of the discharge control unit; and the control signal output by the control signal output end of the line control module controls the discharge control unit to be switched on or switched off.

In some embodiments, the external device power supply apparatus further includes a working state selection unit, where a first output terminal of the working state selection unit is coupled to the control terminal of the line switching module and the control terminal of the line control module, respectively; the first end of the line switching module and the second end of the line switching module are normally on, and the first end of the line switching module and the third end of the line switching module are normally off;

when the first output end of the working state selection unit provides an enabling signal, the first end of the line switching module is disconnected with the second end of the line switching module, and the first end of the line switching module is connected with the third end of the line switching module; after a line switching time, the first end of the line switching module and the second end of the line switching module are restored to be connected, and the first end of the line switching module and the third end of the line switching module are restored to be disconnected.

In some embodiments, the line switching module includes a signal detection terminal, and the signal detection terminal of the line switching module is coupled to the output terminal of the discharge control unit;

the line switching module is configured to turn on a first end of the signal transmission line and a second end of the signal transmission line in response to an output signal of the discharge control unit.

In some embodiments, the line switching module includes a first delay unit and a first line switching unit;

a first end of the first line switching unit is used as a first end of the line switching module, a second end of the first line switching unit is used as a second end of the line switching module, and a third end of the first line switching unit is used as a communication output end of the line switching module;

a first output end of the working state selection unit is coupled to an input end of the first delay unit, an output end of the first delay unit is coupled to a control end of the first line switching unit, and an input end of the first delay unit is used as a control end of the line switching module;

when the first output end of the working state selection unit provides an enabling signal for the first delay unit, the output end of the first delay unit outputs a first level signal, and when a line switching time passes, the output end of the first delay unit outputs a second level signal;

the first line switching unit turns on a first terminal and a third terminal thereof in response to the first level signal, and the first line switching unit turns on the first terminal and the second terminal thereof in response to the second level signal.

In some embodiments, the external device power supply apparatus further includes a working state selection unit, where a first output terminal of the working state selection unit is respectively coupled to the control terminal of the discharge control unit, the control terminal of the line switching module, and the control terminal of the line control module; when the first output end of the working state selection unit provides an enabling signal, the discharge control unit, the line switching module and the line control module start to work.

In some embodiments, the first end of the line switching module is normally open to the second end of the line switching module, and the first end of the line switching module is normally open to the third end of the line switching module;

In some embodiments, the line switching module includes a second delay unit and a second line switching unit;

a first end of the second line switching unit is used as a first end of the line switching module, a second end of the second line switching unit is used as a second end of the line switching module, and a third end of the second line switching unit is used as a communication output end of the line switching module;

a first output end of the working state selection unit is coupled to an input end of the second delay unit, an output end of the second delay unit is coupled to a control end of the second line switching unit, and an input end of the second delay unit is used as a control end of the line switching module;

when the first output end of the working state selection unit provides an enabling signal for the second delay unit, the output end of the second delay unit outputs a third level signal, and the output end of the second delay unit outputs a fourth level signal after a line switching time;

the second line switching unit turns on first and third terminals thereof in response to the third level signal, and the second line switching unit turns on first and second terminals thereof in response to the fourth level signal.

In some embodiments, the signal detection terminal of the line switching module is coupled to the output terminal of the discharge control unit;

In some embodiments, the external device power supply further includes a delay module; the input end of the delay module is coupled to the first output end of the working state selection unit, and the output end of the delay module is coupled to the control end of the discharge control unit, so that the first output end of the working state selection unit is coupled to the control end of the discharge control unit through the delay module.

In some embodiments, the control module further comprises a charging control unit;

the input end of the charging control unit is coupled with the second end of the first lead, and the output end of the charging control unit is coupled with the input end of the energy storage module;

when the charging control unit is conducted, the second end of the first lead is communicated with the input end of the energy storage module.

In some embodiments, the external device power supply apparatus further includes a working state selection unit, wherein a second output terminal of the working state selection unit is coupled to the control terminal of the charging control unit; when the working state unit provides an enabling signal for the control end of the charging control unit, the charging control unit is conducted.

In some embodiments, the output end of the charging control unit is in contact connection with the input end of the energy storage module, and the energy storage module is detachably mounted on the external device power supply device.

In some embodiments, the control module is configured to provide power to the second external device through the second wire by one of the first wire and the energy storage module.

In some embodiments, the control module includes a power switching module, a first input of the power switching module is coupled to the first input of the control module, a second input of the power switching module is coupled to the second input of the control module, and an output of the power switching module is coupled to the second wire;

the power supply switching module is used for supplying power to the second external equipment through the second lead by one of the first lead and the energy storage module.

In some embodiments, the second input end of the control module is in contact connection with the output end of the energy storage module, and the energy storage module is detachably mounted on the external device power supply device.

The external equipment power supply device provided by the application can be used for connecting a power input interface of external equipment and supplying power to the external equipment through the power input interface. In the prior art, when a user supplies power to other external equipment (second external equipment) connected with the user through a personal mobile equipment (first external equipment), if the power is supplied to the other external equipment by the personal mobile equipment, the endurance time of the personal mobile equipment is seriously reduced. The external equipment power supply device provided by the application is provided with the energy storage module which supplies power to the outside, so that the endurance time of the personal mobile equipment and other external equipment is greatly prolonged. In addition, by means of the external equipment power supply device provided by the application, when the personal mobile equipment is powered on, communication connections established between other external equipment and the personal mobile equipment are not disconnected, and a user does not need to interrupt the use of other external equipment. For example, in a specific embodiment, the second external device (other external devices) mentioned above is smart glasses (e.g., virtual reality glasses, augmented reality glasses, etc.), and the first external device (personal mobile device) is a handheld device (e.g., the handheld device is a mobile communication device such as a mobile phone of a user, etc., or the handheld device is a data processing apparatus of the smart glasses).

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a functional block diagram of an external device power supply apparatus according to an embodiment of the present application;

fig. 2 is a functional block diagram of an external device power supply apparatus according to another embodiment of the present application;

FIG. 3 is a circuit diagram of an external device power supply in one embodiment of the present application;

fig. 4 is a circuit diagram of an external device power supply apparatus in another embodiment of the present application;

FIG. 5 is a schematic circuit diagram of the power supply apparatus for the external device;

FIG. 6 is a schematic circuit diagram of an external device power supply in another embodiment of the present application;

FIGS. 7a and 7b are circuit diagrams of a delay unit, respectively;

fig. 8 is a circuit diagram of an external device power supply apparatus in another embodiment of the present application;

FIG. 9 is a schematic circuit diagram of the power supply apparatus for the external device;

fig. 10 is a circuit diagram of an external device power supply apparatus in another embodiment of the present application;

FIG. 11 is a schematic circuit diagram of the power supply apparatus for the external device;

FIG. 12 is a circuit diagram of another delay cell;

FIG. 13 is a schematic diagram of a multiplexing switch module;

FIG. 14 is a schematic diagram of a hysteresis voltage comparison circuit;

fig. 15 shows the output characteristics of the hysteresis voltage comparison circuit described above;

the same or similar reference numbers in the drawings identify the same or similar elements.

Reference numerals

Detailed Description

The present application is described in further detail below with reference to the attached figures.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of the feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. Where certain terms are used in the description and claims to refer to particular components, those skilled in the art will understand that different terms may be used to refer to the same component. This specification and claims do not intend to distinguish between components that differ in name but not function. Throughout the specification and claims, the word "comprise" and variations such as "comprises" and "comprising" are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to. Further, the term "coupled" is intended to include any direct or indirect electrical connection. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

Referring to fig. 1, according to an aspect of the present application, there is provided an external device power supply apparatus including a control module 100, an energy storage module 200, a first wire 300, a second wire 400, and a signal transmission line 320.

Wherein the control module 100 comprises a first input terminal, a second input terminal, and an output terminal; the energy storage module 200 is used for storing electric energy and delivering the stored electric energy to the outside through the output end of the energy storage module 200. The output terminal of the energy storage module 200 is coupled to the second input terminal of the control module 100, so that the energy storage module 200 transmits electric energy to the control module 100 through the second input terminal of the control module 100 when discharging; in some embodiments, the output terminal of the energy storage module 200 is connected to the second input terminal of the control module 100 through a conductive wire, or connected to the second input terminal of the control module 100 through a wiring on a Printed Circuit Board (PCB) or a Flexible Printed Circuit Board (FPC Board); in some embodiments, other intermediate elements, such as some switching elements or diodes for preventing the reverse flow of current, are further provided on the conductive line between the output of the energy storage module 200 and the second input of the control module 100. In some embodiments, the energy storage module 200 includes a primary battery (e.g., a dry cell battery) or a secondary battery (e.g., a lithium battery), and optionally includes associated circuitry for the secondary battery, such as charge and discharge control circuitry, overcharge protection circuitry, and the like.

The first input terminal of the control module 100 is connected to the first connection terminal 310 directly or indirectly (e.g. through another conductive circuit/device, such as a data line connected to an external device power supply device, etc.) via the first conductive line 300, and the first connection terminal 310 is used for connecting to a power interface of an external device (first external device), for example, the first connection terminal 310 is connected to the power interface of the external device directly or indirectly (e.g. through another conductive circuit/device, such as a data line connected to the external device, etc.). The first connection terminal 310 is connected to a first end of the first conductive line 300, and a first input end of the control module 100 is connected to a second end of the first conductive line 300. In some embodiments, the first connection terminal 310 is a pin, a connection pin, or a connection socket for plugging a corresponding pin, connection socket, or connection pin of the first external device, so as to implement a circuit connection in a plugging manner.

The output end of the control module 100 is directly or indirectly connected (for example, through another conductive circuit/device, such as a data line connected to an external device power supply apparatus, etc.) to a second connection terminal 410 via a second wire 400, where the second connection terminal 410 is used for connecting a power input interface of another external device (a second external device), and the control module 100 supplies power to the second external device via the second wire 400, the second connection terminal 410, and the power input interface of the second external device; in some embodiments, the power for providing to the second external device is from one of the first external device and the energy storage module 200. For example, the second connection terminal 410 is directly connected or indirectly connected (e.g., via other conductive traces/devices, such as via a data line or the like that is otherwise connected to an external device) to a power input interface of the external device.

The signal transmission line 320 is used for the first external device and the second external device to communicate with each other, and maintains the communication between the first external device and the second external device after the power storage module 200 starts to supply power to the first external device. The two ends of the signal transmission line 320 are respectively provided with a communication terminal, and the communication terminals are respectively arranged in the first connecting assembly 500 and the second connecting assembly 600. The communication connection terminals are used to connect a first external device and a second external device, respectively, so that the first external device and the second external device communicate when the energy storage module 200 discharges to the first external device (or to both the first external device and the second external device).

It should be noted that the description of the common terminal (or ground) of the circuit is omitted from the specification and drawings of the present application for convenience. It will be appreciated by those skilled in the art that the reference to "voltage" in some embodiments of the present application is relative to the potential of the common (or ground) terminal of the circuit. In addition, the conductive wires referred to herein are, in some embodiments, conductive cables, and in other embodiments, wires on a Printed Circuit Board (PCB) or a Flexible Printed Circuit Board (FPC Board).

The control module 100 is used to supply power to the second external device through the second wire 400 and the second connection terminal 410. The first external device may operate continuously for an extended period of time as compared to prior art approaches where power is supplied to the second external device solely from the first external device. In the case that the second external device is dependent on the first external device, especially in the case that the information collected or processed by the second external device is required to be received and presented by the first external device, or the information processing process of the second external device is dependent on the operation processing of the first external device, accordingly, the time for which the second external device can continuously operate is also prolonged. Thus, the user can continue to operate for a longer period of time without fear of premature exhaustion of the power of the first external device. For example, in a specific embodiment, the second external device is smart glasses (e.g., virtual reality glasses, augmented reality glasses, etc.), the first external device is a handheld device (e.g., a mobile communication device such as a mobile phone of a user, or a data processing device of the smart glasses), and the smart glasses and the handheld device communicate via a communication cable or a wireless connection.

In some cases, for example, in a case where a user goes out with the first external device, the second external device, and the external device power supply apparatus, it is inevitable that the first external device runs out of power. In order to replenish the power to the first external device as soon as possible and reduce the loss of the hardware socket of the first external device caused by repeatedly plugging and unplugging the external cable, in some embodiments, referring to fig. 2, the external device power supply apparatus further includes a discharge control unit 140, an input end of the discharge control unit 140 is connected to an output end of the energy storage module 200, and an output end of the discharge control unit 140 is connected to the first connection terminal 310 through a first wire 300. When the discharge control unit 140 is turned on, the output terminal of the energy storage module 200 is connected to the first wire 300, and the energy storage module 200 starts to supply power to the first external device. In some embodiments, the control module 100 has an output end, the output end is directly connected or indirectly connected (for example, through other conductive wires/devices, such as a cable additionally connected to an external device power supply) to the second connection terminal 410 via the second wire 400, and the second connection terminal 410 is used for connecting a power input interface of another external device (second external device), and the control module 100 supplies power to the second external device via the second wire 400, the second connection terminal 410 and the power input interface of the second external device, for example, the energy storage module 200 optionally supplies power to one of the first external device and the second external device, or supplies power to both the first external device and the second external device; in some embodiments, the power for providing to the second external device is from one of the first external device and the energy storage module 200. For example, the second connection terminal 410 is directly connected or indirectly connected (e.g., via other conductive traces/devices, such as via a cable connected to an external device) to a power input interface of the external device.

In some embodiments, the external device power supply apparatus further includes a signal transmission control unit configured to maintain communication between the first external device and the second external device after the energy storage module 200 starts to supply power to the first external device. Referring to fig. 4, a signal transmission control unit 321 is disposed on the signal transmission line 320 for controlling the on/off of the signal transmission line. In order to avoid the first external device from operating abnormally (for example, according to some communication protocols, when the first external device detects that it is connected to another external device through a transmission line, the first external device starts to supply power from its power interface, which would conflict with the power supply of the energy storage module 200 to the first external device) when the energy storage module 200 supplies power to the first external device, the signal transmission control unit 321 cuts off the signal transmission line 320; after the first external device completes the adjustment of the operation mode, the signal transmission control unit 321 switches back the signal transmission line 320 to resume the communication between the first external device and the second external device, thereby providing an uninterrupted use experience for the user. In some embodiments, the signal transmission control unit 321 switches off the signal transmission line 320 and then switches on the signal transmission line 320 again after a switching time, where the switching time is less than a communication fault tolerance time for the first external device and the second external device to communicate; in the communication process of the first external device and the second external device, if the disconnection time of the communication line is less than the communication fault-tolerant time, the first external device and/or the second external device judges that the communication connection is still maintained, otherwise, the communication connection is disconnected and the communication connection needs to be reestablished.

Specifically, in some embodiments, the signal transmission control unit 321 includes a line switching module 3211 and a line control module 3212. Referring to fig. 5, a first end of the line switching module 3211 is connected to a first communication terminal 322 of the signal transmission line 320, wherein the first communication terminal 322 is used for connecting a communication interface of a first external device; a second end of the line switching module 3211 is connected to the second communication terminal 323 of the signal transmission line 320, wherein the second communication terminal 323 is used for connecting a communication interface of a second external device; the third end of the line switching module 3211 is connected to the line control module 3212. The line switching module 3211 has two operating states: 1) the first end and the second end are connected, and the first end and the third end are disconnected; and 2) the first terminal and the second terminal are disconnected, and the first terminal and the third terminal are connected. When the operating state selecting unit 120 provides an enable signal to the line switching module 3211 and the line control module 3212 (or to the line switching module 3211, the line control module 3212, and the discharging control unit 140), the first terminal and the second terminal of the line switching module 3211 are turned off, and the first terminal and the third terminal are turned on. When the first end and the second end of the line switching module 3211 are turned on, the signal transmission line 320 is turned on, and at this time, the first external device and the second external device may communicate via the signal transmission line 320; when the first end and the second end of the line switching module are disconnected, the signal transmission line 320 is disconnected, and the first external device communicates with the line control module 3212.

The first and second external devices communicate based on the USBPD protocol specification in some embodiments, and the line control module 3212 is a USBPD module. In USB PD, a pair of directly connected ports negotiate the voltage, current, and direction of power supply in the cable using the CC wire in the USB Type-C connector as a communication channel. This mechanism is independent of other operating modes used to negotiate the USB power supply. In one embodiment, the first and second terminals of the line switching module 3211 are turned on, when the first and second external devices communicate via the signal transmission line 320, and the first external device supplies power to the second external device; then, the first terminal and the third terminal of the line switching module 3211 are connected, and the first external device communicates with the line control module 3212 to negotiate an operating mode of the first external device, for example, the first external device switches from the external power supply to receiving the external power supply, and meanwhile, other circuits are ready to supply power to the first external device (for example, a path is formed between the first external device and the energy storage module 200). After the signal transmission line 320 is turned back on, the first external device continues to communicate with the second external device, but the first external device no longer provides power to the second external device. Therefore, the first external device and the second external device continue to communicate, and power supply of the first external device is realized, so that the continuous working time of the first external device is prolonged.

In some embodiments, referring to fig. 6, the line control module 3212 has a control signal output SWAP, for example, a programmable GPIO interface of the USBPD module is defined as the control signal output. The control signal output end outputs a low level signal when the line control module 3212 is not in communication with the first external device, and outputs a high level signal when the line control module 3212 completes communication with the first external device and the first external device changes from external power supply to external power supply; or conversely, the control signal output end outputs a high level signal when the line control module 3212 does not communicate with the first external device, and outputs a low level signal when the line control module 3212 completes communication with the first external device and the first external device changes from external power supply to external power supply. A control terminal of the discharge control unit 140 is connected to the control signal output terminal of the line control module 3212, so that the discharge control unit 140 operates in response to an output signal of the line control module 3212. Specifically, the discharge control unit 140 is turned on after the output signal of the control signal output terminal of the line control module 3212 is changed, so that the energy storage module 200 supplies power to the first connection terminal 310 (the first external device).

In some embodiments, to facilitate the user to control the charging and discharging states of the energy storage module 200, the external device power supply apparatus further includes an operation state selection unit 120. A first output terminal of the operating state selecting unit 120 is connected to control terminals of the line switching module 3211 and the line control module 3212, so as to provide an enable signal for the line switching module 3211 and the line control module 3212. A first end of the line switching module 3211 and a second end of the line switching module 3211 are normally open, that is, the signal transmission line 320 is normally open; and the first end of the line switching module 3211 and the third end of the line switching module 3211 are normally disconnected, that is, the communication line between the first external device and the line control module 3212 is normally disconnected. The line switching module 3211 is implemented based on a single chip to simplify a circuit structure, wherein the line switching module 3211 is configured to switch on the first external device and the line control module 3212 (at this time, the signal transmission line 320 is disconnected) when the power is turned on (receiving an enable signal provided by the operating state selecting unit 120), so as to implement communication between the first external device and the line control module 3212; subsequently, for example, after the discharging control unit 140 is turned on, the first end of the line switching module 3211 and the second end of the line switching module 3211 are turned back on (at this time, the signal transmission line 320 is turned back on), and the first end of the line switching module 3211 and the third end of the line switching module 3211 are turned back off. Optionally, in some embodiments, the circuit switching module 3211 further has a signal detection terminal DETECT connected to the output terminal of the discharge control unit 140; the line switching module 3211 turns the signal transmission line 320 back on when a high level signal is detected through the signal detection terminal (e.g., when it is detected that the output terminal of the discharge control unit 140 outputs a high level signal) to resume communication between the first and second external devices. Referring to fig. 8, fig. 9 is the diagram of fig. 8, alternatively, in some embodiments, the control signal output terminal SWAP of the line control module 3212 is connected to the control terminal of the discharge control unit 140 to provide an enable signal for the discharge control unit 140, wherein when the discharge control unit 140 obtains the enable signal, the discharge control unit 140 is turned on, so that the energy storage module 200 supplies power to the first external device. Referring to fig. 9, for the line switching module 3211, the pins numbered 1 and 2 are normally on with the pins numbered 4 and 6, respectively, and normally off with the pins numbered 5 and 7, respectively; when the operating state selecting unit 120 provides an enable signal, the pins numbered 1 and 2 of the line switching module 3211 are respectively disconnected from the pins numbered 4 and 6, and are respectively connected to the pins numbered 5 and 7; after the set line switching time elapses, the line switching module 3211 detects that the output terminal of the discharge control unit 140 is at a high level, and the pins numbered 1 and 2 are respectively turned back on with the pins numbered 4 and 6 and turned back off with the pins numbered 5 and 7. That is, after the line switching time elapses, the first end of the line switching module 3211 and the second end of the line switching module 3211 are turned back on, and the first end of the line switching module 3211 and the third end of the line switching module 3211 are turned back off.

In some embodiments of the present application, the line switching module 3211 is implemented based on a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), or the like.

The line switching module 3211 may not include the signal detection terminal DETECT in some embodiments. Specifically, referring to fig. 10 (fig. 11 is a diagram of fig. 10), compared to fig. 8 and 9, in some embodiments, the signal detection terminal DETECT of the line switching module 3211 is canceled, and the line switching module 3211 does not DETECT the output signal of the discharge control unit 140, but is directly configured to turn on the first external device and the line control module 3212 when power is turned on (when the enable signal provided by the operating state selecting unit 120 is received), and to turn on the signal transmission line 320 again after a certain time (line switching time).

As described above, in some embodiments, in order to facilitate the user to control the charging and discharging states of the energy storage module 200, the external device power supply apparatus further optionally includes an operating state selecting unit 120, where a first output terminal of the operating state selecting unit is coupled to the control terminal of the line switching module and the control terminal of the line control module, respectively. The line switching module 3211 includes a first delay unit and a first line switching unit. The first delay unit has an input terminal and an output terminal, and the input terminal of the first line switching unit is connected to the output terminal of the first delay unit to detect the output signal of the first delay unit. When an external signal is input into the input end of the first delay unit, the first delay unit outputs a first level signal; after a certain time (line switching time), the output of the first delay unit becomes a second level signal. For example, when the input terminal of the first delay unit is at a low level, the output terminal thereof is also at a low level; when the input end of the first delay unit receives a high level signal, the output end of the first delay unit also outputs a high level signal (a first level signal); after the line switching time, the output end of the first delay unit outputs a low level signal (second level signal). The first line switching unit cuts off the signal transmission line 320 in response to the high level signal output from the first delay unit (at which time the communication lines of the first and second external devices are cut while the first external device communicates with the line control module), and restores the signal transmission line 320 in response to the low level signal output from the first delay unit (at which time the communication lines of the first and second external devices are cut while the first external device communicates with the second external device). Therefore, the first delay unit is used for providing the delayed recovery signal for the first line switching unit, so as to provide a time window for the first external device to convert from the external power supply to the external power supply. For another example, when the input terminal of the first delay unit is at a high level, the output terminal thereof is also at a high level; when the input end of the first delay unit receives a low level signal, the output end of the first delay unit also outputs a low level signal (a first level signal); after the line switching time, the output end of the first delay unit outputs a high level signal (second level signal). The first line switching unit cuts off the signal transmission line 320 in response to the low level signal output from the first delay unit (at which time the communication lines of the first and second external devices are cut while the first external device communicates with the line control module), and restores the signal transmission line 320 in response to the high level signal output from the first delay unit (at which time the communication lines of the first and second external devices are cut while the first external device communicates with the second external device). Therefore, the first delay unit is used for providing the delayed recovery signal for the first line switching unit, so as to provide a time window for the first external device to convert from the external power supply to the external power supply.

Taking the signal received by the first delay unit as a high-level signal as an example, a circuit structure of the first delay unit is shown in fig. 12, which includes two resistors R4 and R5, a diode D1, a capacitor C1, and a transistor Q2. When a high level signal is input to the input terminal of the first delay unit, the output terminal thereof also outputs a high level signal, and at the same time, the capacitor C1 starts to charge, and the transistor Q2 is turned off. As the voltage across the capacitor C1 gradually increases to the threshold voltage of the transistor Q2, the transistor Q2 is turned on, and the first delay unit outputs a low level signal. For the case that the signal received by the first delay unit is a low level signal, a person skilled in the art should make corresponding adjustments to the circuit, and the corresponding circuit is also included in the protection scope of the present application and is not described herein again.

In addition, the line switching module 3211 in the embodiments of the present application is optionally implemented based on a multiplexing switch. Fig. 13 shows a schematic diagram of a dual channel integrated multiplexing switch (PI5a23159UEX), in which the reference numbers on the individual pins do not correspond to the actual pin numbers of the integrated multiplexing switch, but to the reference numbers on the line switching module 3211 in fig. 8 to 11, respectively, in order to understand the operating principle of the multiplexing switch. The pin numbered 5 is normally open to the pin numbered 1, the pin numbered 7 is normally open to the pin numbered 2, and the pin numbered 4 is normally closed to the pin numbered 1, and the pin numbered 6 is normally closed to the pin numbered 2. In particular, in the case that the line switching module 3211 includes a first delay unit and a first line switching unit, the first line switching unit may also be implemented based on the multiplexing switch.

Referring to fig. 3 or 4, in some embodiments, the discharge control unit 140 is turned on or off in response to an output level of an operation state selection unit 120. The first output terminal of the operating state selecting unit 120 is connected to the control terminal of the discharge control unit 140 to control the operating state of the discharge control unit 140: when the first output terminal of the operating state selecting unit 120 provides the enable signal to the control terminal of the discharge control unit 140, the discharge control unit 140 is turned on. The first output end of the operating state selecting unit 120 is further connected to the control end of the line switching module 3211 and the control end of the line control module 3212, respectively. When the first output terminal of the operating state selecting unit 120 provides an enable signal, the line switching module 3211 and the line control module 3212 start to operate. In some embodiments, the discharge control unit 140 includes a switching device (e.g., a field effect transistor, an optocoupler, a relay, etc.). Taking the discharge control unit 140 as an example of a relay, the first wire 300 is connected to a normally open contact of the relay, the output terminal of the energy storage module 200 is connected to a common contact of the relay, and the first output terminal of the operating state selecting unit 120 is connected to a coil of the relay; when the first output terminal of the operating state selecting unit 120 outputs a high level, the output terminal of the energy storage module 200 is connected to the first conductive line 300, and the energy storage module 200 starts to supply power to the first external device. In particular, in some embodiments, the switching device is implemented based on an integrated Power Management module (Power Management IC), such as an MT6323 chip available from distributed department (MediaTek) or an SC0163D chip available from pi (Power integrations) in the united states and supporting "Quick Charge, QC" technology of high-pass (Qualcomm) corporation.

In some embodiments, the first end of the line switching module 3211 is normally connected to the second end of the line switching module 3211, and the first end of the line switching module 3211 is normally disconnected from the third end of the line switching module 3211. When the first output end of the working state selection unit provides an enable signal, the first end of the line switching module 3211 is disconnected from the second end of the line switching module 3211, and the first end of the line switching module 3211 is connected to the third end of the line switching module 3211; after a line switching time, the first end of the line switching module 3211 and the second end of the line switching module 3211 are turned on again, and the first end of the line switching module 3211 and the third end of the line switching module 3211 are turned off again.

In some embodiments, the line switching module 3211 includes a second delay unit and a second line switching unit. The second delay unit has an input terminal and an output terminal, and the input terminal of the second line switching unit is connected to the output terminal of the second delay unit to detect the output signal of the second delay unit. When the external signal is input into the input end of the second delay unit, the second delay unit outputs a third level signal; after a certain time (line switching time), the output of the second delay unit becomes a fourth level signal. For example, when the input terminal of the second delay unit is at a low level, the output terminal thereof is also at a low level; when the input end of the second delay unit receives a high level signal, the output end of the second delay unit also outputs a high level signal (third level signal); after the line switching time, the output end of the second delay unit outputs a low level signal (fourth level signal). The second line switching unit cuts off the signal transmission line 320 (when the communication lines of the first and second external devices are cut while the first external device communicates with the line control module) in response to the high level signal output from the second delay unit, and restores the signal transmission line 320 (when the communication lines of the first and second external devices are cut while the first external device communicates with the second external device) in response to the low level signal output from the second delay unit. Therefore, the second delay unit is used for providing the delayed recovery signal for the second line switching unit, so as to provide a time window for the second external device to change from the external power supply to the external power supply. For another example, when the input terminal of the second delay unit is at a high level, the output terminal thereof is also at a high level; when the input end of the second delay unit receives a low level signal, the output end of the second delay unit also outputs a low level signal (third level signal); after the line switching time, the output end of the second delay unit outputs a high level signal (fourth level signal). The second line switching unit cuts off the signal transmission line 320 (when the communication lines of the first and second external devices are cut while the first external device communicates with the line control module) in response to the low level signal output from the second delay unit, and restores the signal transmission line 320 (when the communication lines of the first and second external devices are cut while the first external device communicates with the second external device) in response to the high level signal output from the second delay unit. Therefore, the second delay unit is used for providing the delayed recovery signal for the second line switching unit, so as to provide a time window for the second external device to change from the external power supply to the external power supply.

In a situation where the first output terminal of the operating state selecting unit 120 is connected to the control terminal of the discharge control unit 140, the control terminal of the line switching module 3211 and the control terminal of the line control module 3212, in some embodiments, the line switching module 3211 further has a signal detection terminal DETECT, which is connected to the output terminal of the discharge control unit 140. A first end of the line switching module 3211 is normally connected to a second end of the line switching module 3211, that is, the signal transmission line 320 is normally connected; and the first end of the line switching module 3211 and the third end of the line switching module 3211 are normally disconnected, that is, the communication line between the first external device and the line control module 3212 is normally disconnected. The line switching module 3211 is implemented based on a single chip to simplify a circuit structure, wherein the line switching module 3211 is configured to switch on the first external device and the line control module 3212 (at this time, the signal transmission line 320 is disconnected) when the power is turned on (receiving an enable signal provided by the operating state selecting unit 120), so as to implement communication between the first external device and the line control module 3212; and the line switching module 3211 switches the signal transmission line 320 again when a high level signal is detected through the signal detection terminal (e.g., when it is detected that a high level signal is output from the output terminal of the discharge control unit 140) to resume communication between the first external device and the second external device. The specific implementation manner of the line switching module 3211 is the same or substantially the same as the specific implementation manner in the related embodiment (for example, the embodiment corresponding to fig. 9), and is not repeated herein and is included herein by reference.

In some embodiments, a time delay module may be arranged between the discharge control unit 140 and the first output terminal of the operating state selecting unit 120 to provide a time window for the first external device to receive the external power from the external power, so that the discharge control unit 140 is turned on after the first external device completes communication with the line control module 3212, thereby avoiding an error of the first external device. The input terminal of the delay module is connected to the first output terminal of the operating state selecting unit 120, and the output terminal of the delay module is connected to the control terminal of the discharge control unit 140, so that the first output terminal of the operating state selecting unit 120 is connected to the control terminal of the discharge control unit 140 through the delay unit. Taking the enable signal as a high level as an example, fig. 7a shows a circuit principle of a delay module (delay circuit) that can be used in the above-described embodiment to implement delayed transmission of the enable signal. The circuit includes a capacitor C1, three resistors R1-R3, and a MOS transistor Q1, the specific connection is as shown in FIG. 7 a. A high-level control signal is input into the delay circuit, the capacitor C1 is charged through the resistor R2 (the voltage at the two ends of the capacitor C1 cannot change suddenly), so that the voltage at the two ends of the resistor R1 is high, the MOS transistor Q1 is turned off at the moment, and the delay circuit outputs low level; after a period of time, the capacitor C1 is gradually charged, the voltage at the two ends of the resistor R2 gradually drops to 0, at this time, the MOS transistor Q1 is turned on, the post-stage circuit is turned on, and the delay circuit outputs a high level. As another example, fig. 7b shows a circuit principle of another delay module (delay circuit) including an RC delay circuit including a resistor R1 'and a capacitor C1', wherein the delay time can be changed by changing the capacitance of the capacitor C1 'and the resistance of the resistor R1', and the delay module enables the first external device to provide the enable signal to the discharge control unit 140 after the communication between the first external device and the line control module is completed. It should be noted that the above-mentioned delay circuit is only a possible implementation manner and is not a limitation to the specific embodiments of the present application, and other existing delay circuits can be applied to the present application and are included in the protection scope of the present application. For example, in some cases, the delay module includes a transistor or other switching device, and other associated circuit elements are arranged as desired. For another example, in the case where the enable signal is a low level signal, an appropriate delay circuit should be selected.

On the basis of the above embodiments, the control module 100 further includes a charging control unit 110 in some embodiments (for example, refer to fig. 3, 4, 8, or 10). The charging control unit 110 is used for controlling the charging process of the energy storage module 200 to supplement the electric energy consumed by the energy storage module 200 due to discharging. The input terminal of the charging control unit 110 is connected to the second terminal of the first wire 300, the output terminal of the charging control unit 110 is connected to the input terminal of the energy storage module 200, the first wire 300, the charging control unit 110, and a circuit for connecting the output terminal of the charging control unit 110 and the input terminal of the energy storage module 200 constitute a charging circuit of the energy storage module 200, and when the charging control unit 110 is turned on, the energy storage module 200 can be charged by an external device (for example, a mobile communication device of a user or a power adapter, wherein the power adapter is connected to a commercial power such as 220V ac voltage in some embodiments, and outputs 5V dc voltage). In some embodiments, to facilitate the user to control the charging and discharging states of the energy storage module 200, the external device power supply apparatus further includes an operation state selection unit 120. Referring to fig. 3, 4, 8 or 10, in some embodiments, the second output terminal of the operating state selecting unit 120 is connected to the control terminal of the charging control unit 110; by adjusting the state of the operating state selecting unit 120, a user can control the level of the output terminal of the operating state selecting unit 120, and the charging control unit 110 is turned on or off in response to the state of the level (e.g., a high state or a low state), thereby turning on or off the charging loop between the external device and the energy storage module.

In some embodiments, the charge control unit 110 includes a switching device and related peripheral circuits, for example, the switching device is a transistor (e.g., a PNP transistor or an NPN transistor), a field effect transistor (e.g., an N-channel fet or a P-channel fet), an optical coupling device, or a relay. It should be understood by those skilled in the art that the switch devices (and their peripheral circuits) listed herein are not exhaustive and are not intended to limit the present application, and that other existing or future switch devices (and their peripheral circuits), such as may be used to switch on or off the charging circuit between the external device and the energy storage module, are also suitable for use in the present application and are included within the scope of the present application and are hereby incorporated by reference. For example, the charge control unit 110 includes an integrated semiconductor circuit module, and the semiconductor integrated circuit module turns on or off a charge loop between the external device and the energy storage module in response to a level signal at an output terminal of the operation state selection unit 120.

In some embodiments, to facilitate the charging operation of different energy storage modules based on the charging loop, for example, to perform the charging operation of a plurality of different energy storage modules in series, the energy storage module 200 is detachably mounted to the external device power supply, and the output terminal of the charging control unit 110 is in contact connection with the input terminal of the energy storage module 200 (instead of being welded or screwed), for example, the charging control unit 110 is connected to a socket, and the input terminal of the energy storage module 200 is connected to a plug, and when the plug is inserted into the socket, the output terminal of the charging control unit 110 is in contact connection with the input terminal of the energy storage module 200. It will be understood by those skilled in the art that the above contact connection is only an example and not a limitation of the present application, and that other existing or future contact connection schemes may be applied to the present application and are included within the scope of the present application and are incorporated herein by reference. For example, one or more conductive contacts are respectively disposed at the output end of the charging control unit 110 and the input end of the energy storage module 200, and the output end of the charging control unit 110 and the input end of the energy storage module 200 are in contact connection through the contact of the conductive contacts.

In some embodiments, for example, referring to fig. 3, 4, 8 or 10, the control module 100 is configured to provide power to the second external device from one of the first conductor 300 and the energy storage module 200 via the second conductor 400 and the second connection terminal 410. In other words, the control module 100 supplies power to the second external device through one of the first external device and the energy storage module 200.

In some embodiments, for example with reference to fig. 3, 4, 8 or 10, the control module 100 includes a power supply switching module 130. A first input terminal of the power supply switching module 130 is connected to a first input terminal of the control module 100 (for example, connected to a corresponding input interface or input line of the control module by a conductive wire), and a second input terminal of the power supply switching module 130 is connected to a second input terminal of the control module 100 (for example, connected to a corresponding input interface or input line of the control module 100 by a conductive wire); the output end of the power supply switching module 130 is used for outputting power to the second wire 400. For example, the control module 100 supplies power to the second external device through the second wire 400 from one of the first wire 300 (or the first external device) and the energy storage module 200. In the case that the energy storage module 200 can also supply power to the second external device, the time for which the first external device can continuously operate is prolonged. Specifically, the power supply switching module 130 detects a first voltage on the first wire 300 and a second voltage at the output end of the energy storage module 200, compares the first voltage with the second voltage, and connects a line with a higher voltage to the power supply loop of the second external device, so that the control module 100 supplies power to the second external device through the second wire 400 by one of the first wire 300 (or the first external device) and the energy storage module 200. For example, if the first voltage is higher than the second voltage, the first wire 300 and the second wire 400 are connected, so that the first external device supplies power to the second external device through the first wire 300 and the second wire 400; otherwise, the output terminal of the energy storage module 200 is connected to the second wire 400, and the energy storage module 200 supplies power to the second external device through the second wire 400.

In some embodiments, the power supply switching module 130 includes a voltage comparing unit 131 and a gating unit 132. A first input terminal of the voltage comparing unit 131 is connected to the first input terminal of the control module 100 as the first input terminal of the power supply switching module 130, and a second input terminal of the voltage comparing unit 131 is connected to the second input terminal of the control module 100 as the second input terminal of the power supply switching module 130; the output terminal of the voltage comparing unit 131 is connected to a control terminal EN of a gating unit 132, a first input terminal Vin _1 of the gating unit 132 is connected to the first conductive line 300, a second input terminal Vin _2 of the gating unit 132 is connected to the output terminal of the energy storage module 200, and the output terminal of the gating unit 132 serves as the output terminal of the power supply switching module 130. The voltage comparing unit 131 compares the voltages of the two input terminals and outputs a comparison result (for example, if the voltage on the first conducting wire 300 is higher than the voltage at the output terminal of the energy storage module 200, a high level is output at the output terminal Vout of the voltage comparing unit 131, otherwise, a low level is output); the control terminal EN of the gating unit 132 controls the first conductive line 300 or the output terminal of the energy storage module 200 to be connected to the second conductive line 400 according to the output level signal of the voltage comparing unit 131. It should be noted that if the voltage comparison unit 131 outputs a high level signal when the voltage of the first conductive line 300 is higher than the voltage of the output terminal of the energy storage module 200, the gating unit 132 should be configured to turn on the first conductive line 300 and the second conductive line 400 in response to the high level signal; if the voltage comparison unit 131 outputs a high level signal when the voltage of the first wire 300 is lower than the voltage of the output terminal of the energy storage module 200, the gating unit 132 should be configured to switch on the first wire 300 and the second wire 400 in response to the low level signal to ensure that the higher voltage of the first wire 300 and the output terminal of the energy storage module 200 is switched on with the second wire 400. The second input terminal Vin _2 of the gating unit 132 and the output terminal of the gating unit 132 are configured to be normally on.

In some embodiments, the voltage comparing unit 131 includes a voltage comparing circuit (or referred to as a voltage comparator) and peripheral circuits thereof.

Wherein the gating unit 132 in some embodiments includes a digital or analog switching device, such as a relay, an optocoupler, etc. Taking the example where the gating unit 132 includes a relay and the voltage comparing unit 131 outputs a high level signal when the voltage on the first wire 300 is higher than the voltage on the output terminal of the energy storage module 200, the output terminal of the voltage comparing unit 131 is connected to the control terminal (coil) of the relay, the first wire 300 is connected to the normally open contact of the relay, the output terminal of the energy storage module 200 is connected to the normally closed contact of the relay, and the second wire 400 is connected to the common contact of the relay. Here, the relay is activated at a high level, that is, when the input to the control terminal (coil) of the relay is at a high level, the open contact is closed and the normally closed contact is opened. Taking the example that the gating unit 132 includes a digital switch and the voltage comparing unit 131 outputs a high level signal when the voltage on the first conducting wire 300 is higher than the voltage on the output terminal of the energy storage module 200, the output terminal of the voltage comparing unit 131 is connected to the control terminal of the digital switch, the first conducting wire 300 is connected to one input terminal of the digital switch, the output terminal of the energy storage module 200 is connected to the other input terminal of the digital switch, and the second conducting wire 400 is connected to the output terminal of the digital switch. The arrangement is such that the output end of the energy storage module 200 serves as a default power supply for supplying power to the second wire 400, and the first wire 300 (or the first external device) supplies power to the second wire 400 (or the second external device) only when the voltage of the energy storage module 200 is reduced to a certain extent, so as to reduce the power consumption of the first external device as much as possible.

In some embodiments, the voltage comparison unit 131 includes a hysteresis voltage comparison circuit. Referring to fig. 14, a structure of a hysteresis voltage comparison circuit includes an operational amplifier a and resistors R6 and R7, wherein two input terminals (usually non-inverting/inverting input terminals) of the operational amplifier a are respectively connected to two external voltage signals u1 and u2, and an output uo is a comparison result of the external voltage signals u1 and u 2. Referring to fig. 15, compared to a conventional voltage comparison circuit, a hysteresis voltage comparison circuit (sometimes called Schmidt trigger) provides an external characteristic with hysteresis so as to avoid the occurrence of repeated transitions of the output signal between high and low levels when the voltage signals u1, u2 are close to avoid abnormal operation of the first external device or unstable power supply of the second external device.

Referring to the circuit configuration shown in fig. 3, 4, 8 or 10, in some embodiments, to facilitate the user to control the operation state of the voltage comparing unit 131, the external device power supply apparatus further includes an operation state selecting unit 120. The third output terminal of the operating state selecting unit 120 is connected to the control terminal of the voltage comparing unit 131; by adjusting the state of the operating state selecting unit 120, a user can control the level of the output terminal of the operating state selecting unit 120, and the voltage comparing unit 131 is turned on or off in response to the state of the level (e.g., a high state or a low state), thereby turning on or off the power supply loop of the second external device. For example, the high level voltage output by the operating state selecting unit 120 serves as the operating voltage of the voltage comparing unit 131. Wherein in some embodiments, the external device power supply further provides a first connection assembly 500 and a second connection assembly 600. The first connecting assembly 500 is used to connect a first external device (for example, the first connecting assembly 500 includes a plug and a plurality of pins/pins), and the second connecting assembly 600 is used to connect a second external device (for example, the second connecting assembly 600 includes a plug and a plurality of pins/pins). The first connection assembly 500 provides the first connection terminal 310, and the second connection assembly 600 provides the second connection terminal 410.

In some embodiments, to facilitate replacement of an energy storage module when power is exhausted from one energy storage module to extend the continuous life of an external device, such as a second external device that is continuously powered by a plurality of different energy storage modules, the energy storage module 200 is removably mounted to the external device power supply, and the output of the energy storage module 200 is in contact connection with (rather than being welded or screwed to) other portions of the circuit. During replacement of the energy storage module, based on the above-described setting, since the output voltage of the energy storage module is 0 and lower than the voltage on the first wire 300, the second wire 400 is supplied with power from the first wire 300; after the energy storage module is replaced, when the output voltage of the energy storage module is higher than the voltage on the first wire 300, the second wire 400 is powered by the replaced energy storage module. Based on this, the second external device can achieve a long-time continuous operation.

In one embodiment, a second input terminal of the voltage comparing unit 131 and a second input terminal of the gating unit 132 are connected to a socket; the output terminal of the energy storage module 200 is connected to a plug, and when the plug is inserted into the socket, the output terminal of the energy storage module 200 is in contact connection with the second input terminal of the voltage comparison unit 131 and the second input terminal of the gating unit 132. It will be understood by those skilled in the art that the above contact connection is only an example and not a limitation of the present application, and that other existing or future contact connection schemes may be applied to the present application and are included within the scope of the present application and are incorporated herein by reference. For example, one or more conductive contacts are respectively disposed at the second input terminal of the voltage comparing unit 131, the second input terminal of the gating unit 132, and the output terminal of the energy storage module 200, and the second input terminal of the voltage comparing unit 131, the second input terminal of the gating unit 132, and the output terminal of the energy storage module 200 are in contact connection through the contact of the conductive contacts.

In some embodiments, the external device power supply apparatus provided by the present application is connected to an external device through a USBType-C cable and an interface; communication lines (if any) are constructed based on the aforementioned USBType-C cable.

The foregoing detailed description provides exemplary embodiments of external device power supply apparatuses provided in the present application. It should be noted that the above embodiments are only examples and are not intended to limit the specific implementation of the external device power supply apparatus provided in the present application; the specific implementation manners of the external device power supply device in each embodiment can be combined arbitrarily without causing contradiction or confusion.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Claims

1. An external device power supply apparatus, wherein the external device power supply apparatus comprises:

an energy storage module;

a second wire, a first end of which is coupled to the output end of the control module, and a second end of which is coupled to a second connection terminal, wherein the second connection terminal is used for connecting a power input interface of a second external device and supplying power to the second external device through the power input interface of the second external device;

a signal transmission line for communicating between the first external device and the second external device and maintaining the communication between the first external device and the second external device after the energy storage module starts to discharge through the first wire; wherein a first end of the signal transmission line is used for connecting the first external device, and a second end of the signal transmission line is used for connecting the second external device; and

a signal transmission control unit for cutting off the signal transmission line and re-switching on the signal transmission line after a switching time, wherein the switching time is less than a communication fault tolerance time for communication between the first external device and the second external device; and in the conversion time, a path is formed between the energy storage module and the first external device, and the working mode of the first external device is converted from the external power supply to the external power supply.

2. The external device power supply apparatus according to claim 1, wherein the external device power supply apparatus further comprises a discharge control unit, an input terminal of the discharge control unit is coupled to the output terminal of the energy storage module, and an output terminal of the discharge control unit is coupled to the first connection terminal; when the discharge control unit is switched on, the output end of the energy storage module is switched on with the first connecting terminal.

3. The external device power supply apparatus according to claim 2, wherein the signal transmission control unit includes a line switching module and a line control module;

4. The external device power supply apparatus according to claim 3, wherein a control signal output terminal of the line control module is coupled to a control terminal of the discharge control unit; and the control signal output by the control signal output end of the line control module controls the discharge control unit to be switched on or switched off.

5. The external device power supply apparatus according to any one of claims 3 to 4, wherein the external device power supply apparatus further comprises an operating state selecting unit, a first output terminal of the operating state selecting unit is coupled to the control terminal of the line switching module and the control terminal of the line control module respectively; the first end of the line switching module and the second end of the line switching module are normally on, and the first end of the line switching module and the third end of the line switching module are normally off;

6. The external device power supply apparatus according to claim 5, wherein the line switching module includes a signal detection terminal, and the signal detection terminal of the line switching module is coupled to the output terminal of the discharge control unit;

7. The external device power supply apparatus according to claim 5, wherein the line switching module includes a first delay unit and a first line switching unit;

8. The external device power supply apparatus according to claim 3, further comprising an operating state selecting unit, wherein a first output terminal of the operating state selecting unit is coupled to the control terminal of the discharge control unit, the control terminal of the line switching module, and the control terminal of the line control module, respectively; when the first output end of the working state selection unit provides an enabling signal, the discharge control unit, the line switching module and the line control module start to work.

9. The external device power supply of claim 8, wherein the first end of the line switching module is normally on with the second end of the line switching module, and the first end of the line switching module is normally off with the third end of the line switching module;

10. The external device power supply apparatus according to claim 8, wherein the line switching module includes a second delay unit and a second line switching unit;

11. The external device power supply apparatus according to claim 8, wherein the signal detection terminal of the line switching module is coupled to the output terminal of the discharge control unit;

12. The external device power supply apparatus according to any one of claims 8 to 11, wherein the external device power supply apparatus further comprises a first delay module; the input end of the first delay module is coupled to the first output end of the working state selection unit, and the output end of the first delay module is coupled to the control end of the discharge control unit, so that the first output end of the working state selection unit is coupled to the control end of the discharge control unit through the first delay module.

13. The external device power supply apparatus according to claim 1, wherein the control module further includes a charging control unit;

14. The external device power supply apparatus according to claim 13, wherein the external device power supply apparatus further comprises an operating state selecting unit, a second output terminal of the operating state selecting unit is coupled to the control terminal of the charging control unit; when the working state unit provides an enabling signal for the control end of the charging control unit, the charging control unit is conducted.

15. The external device power supply apparatus according to claim 13 or 14, wherein an output terminal of the charging control unit is contact-connected with an input terminal of the energy storage module, and the energy storage module is detachably mounted to the external device power supply apparatus.

16. The external device power supply apparatus according to claim 1, wherein the control module is configured to supply power to the second external device through the second wire by one of the first wire and the energy storage module.

17. The external device power supply apparatus according to claim 16, wherein the control module comprises a power supply switching module, a first input terminal of the power supply switching module is coupled to the first input terminal of the control module, a second input terminal of the power supply switching module is coupled to the second input terminal of the control module, and an output terminal of the power supply switching module is coupled to the second wire;

18. The external device power supply of claim 16 or 17, wherein the second input of the control module is in contact connection with the output of the energy storage module, and the energy storage module is detachably mounted to the external device power supply.