CN216851378U - Time-sharing multiplexing charging system and mobile power supply - Google Patents

Abstract

The application relates to a time-division multiplexing charging system and a mobile power supply, wherein the system comprises a controller, a first protocol module, a load detection module, a plurality of output interfaces, a switch module and an energy storage module; the load detection module is electrically connected with the plurality of output interfaces and the controller respectively and is used for determining a target output interface accessed to a load; the controller is respectively electrically connected with the first protocol module and the switch module, the first protocol module is respectively electrically connected with the plurality of output interfaces through the switch module, and the controller is used for controlling the conduction mode of the switch module according to the target output interface; the controller is also electrically connected with the energy storage module, and the energy storage module is respectively electrically connected with the plurality of output interfaces. Through the application, the problems of cost increase and resource waste of a charging treasure caused by the adoption of two sets of PD control circuits are solved, the hardware cost of the charging treasure is reduced, and the user use experience is improved.

Description

Time-sharing multiplexing charging system and mobile power supply

Technical Field

The application relates to the technical field of mobile power supplies, in particular to a time-sharing multiplexing charging system and a mobile power supply.

Background

The mobile power supply is also called as a charger, and is mainly used for charging electronic equipment such as mobile phones and tablet computers, and mobile and portable charging of the electronic equipment is achieved. However, when people go out, not everyone is willing to carry the treasured that charges, therefore, the sharing treasured that charges is suitable for fortune, and the people who are unwilling to carry the treasured that charges of being convenient for charges for electronic equipment. The sharing treasured that charges considers user's use convenience, needs to take the charging wire on the treasured that charges certainly. Consider that there is the different mouth that charges in the present market cell-phone, the precious cell-phone of adaptation different interfaces that charges generally can have Micro-USB charging wire, Type-C charging wire and the dedicated lighting charging wire of Apple three kinds of charging cables. Three output interfaces of a power bank in the prior art are all 5v output voltage, and the power ends of three charging wires and the ground end are connected in parallel, so that three different mobile phones can be supported simultaneously.

Along with the gradual maturity of the technique of filling soon, the user is strong to quick charge's demand, in order to prevent because the input voltage of powered device and the precious output voltage mismatch condition of charging take place, need carry out Power Delivery (PD) agreement negotiation through the precious output of charging and powered device's input earlier before filling the start-up soon to powered device, only after the agreement negotiation succeeds, the precious just can provide the mode of filling soon to powered device that charges.

In order to meet the fast charging requirements of the equipment with the lightning interface and the equipment with the Type-C interface, one of the methods of the charging pal in the market at present is that the charging pal only provides a Type-C physical interface, when a user uses the equipment with the Type-C interface, the equipment needs to be charged by a Type-C to Type-C cable, when the user uses the equipment with the lightning interface, the equipment needs to be charged by a Type-C to lightning cable, the charging mode is that the fast charging requirements of different users can be met by using a protocol chip of one set of PD, but the user needs to carry the cable corresponding to the equipment, and the user experience is poor. Another way is to use two sets of PD controller circuits inside the mobile power supply, which are respectively used for PD protocol negotiation for different types of powered devices, and this charging mode user does not need to carry cables, but the two sets of PD controller circuits undoubtedly cause the cost increase of the charger and the waste of resources.

Aiming at the technical problems of cost increase of a charging treasure and resource waste caused by the adoption of two sets of PD control circuits in the related art, no effective solution is provided at present.

SUMMERY OF THE UTILITY MODEL

The embodiment provides a time-division multiplexing charging system and a mobile power supply, so as to solve the problems of cost increase of a charging bank and resource waste caused by the adoption of two sets of PD control circuits in the related art.

In a first aspect, there is provided in this embodiment a time division multiplex charging system, comprising: the device comprises a controller, a first protocol module, a load detection module, a plurality of output interfaces, a switch module and an energy storage module;

the load detection module is electrically connected with the plurality of output interfaces and the controller respectively, and is used for determining a target output interface accessed to a load;

the controller is electrically connected with the first protocol module and the switch module respectively, the first protocol module is electrically connected with the plurality of output interfaces through the switch module respectively, and the controller is used for controlling the conduction mode of the switch module according to the target output interface;

the controller is further electrically connected with the energy storage module, and the energy storage module is respectively electrically connected with the plurality of output interfaces.

In some embodiments, the controller further includes a boost module, the controller is electrically connected to the boost module, and the energy storage module is electrically connected to the plurality of output interfaces through the boost module.

In some embodiments, the output interfaces are all USB type-C interfaces or all Lightning interfaces.

In some of these embodiments, the output interface includes a USB type-C interface and a Lightning interface.

In some embodiments, the energy storage device further comprises an input interface, and the input interface is electrically connected with the energy storage module and an external power supply respectively.

In some embodiments, the controller further includes a second protocol module, the controller is electrically connected to the switch module and the second protocol module, and the second protocol module is electrically connected to the plurality of output interfaces through the switch module.

In some of these embodiments, the output interface further comprises a Micro-USB interface.

In some embodiments, the output interface includes a first output interface and a second output interface, the switch module further includes a first switch unit and a second switch unit, the first switch unit includes a first connection end, a second connection end, a third connection end and a first control end, the first connection end is connected to the first output interface, the second connection end is electrically connected to the first protocol module, the third connection end is electrically connected to the load detection module, the first control end is electrically connected to the controller, the second switch unit includes a fourth connection end, a fifth connection end, a sixth connection end and a second control end, the fourth connection end is connected to the second output interface, the fifth connection end is electrically connected to the first protocol module, the sixth connection end is electrically connected to the load detection module, the second control end is electrically connected with the controller.

In some of these embodiments, the switching module comprises a field effect transistor.

In a second aspect, the present embodiment further provides a mobile power supply, including the time-division multiplexing charging system described in any one of the embodiments of the first aspect.

Compared with the related art, the time-division multiplexing charging system provided in the present embodiment includes: the device comprises a controller, a first protocol module, a load detection module, a plurality of output interfaces, a switch module and an energy storage module; the load detection module is electrically connected with the plurality of output interfaces and the controller respectively, and is used for determining a target output interface accessed to a load; the controller is respectively electrically connected with the first protocol module and the switch module, the first protocol module is respectively electrically connected with the plurality of output interfaces through the switch module, and the controller is used for controlling the conduction mode of the switch module according to the target output interface; the controller is further electrically connected with the energy storage module, and the energy storage module is respectively electrically connected with the plurality of output interfaces. The output interface of the access load is detected through the load detection module to determine the target output interface, and the negotiation signal of the target output interface is sent to the first protocol module through the controller and the switch module, so that the negotiation of the negotiation signals of the plurality of output interfaces is realized through the first protocol module, a protocol module is not required to be arranged for each output interface, the technical problems of cost increase of a charging treasure and resource waste caused by the adoption of two sets of PD control circuits in the related technology are solved, the hardware cost of the charging treasure is reduced, and the use experience of a user is improved.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a block diagram of a time-sharing multiplexing charging system according to an embodiment of the present invention;

fig. 2 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention;

fig. 3 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention;

fig. 4 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention;

fig. 5 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a time-sharing multiplexing charging system according to an embodiment of the present invention;

fig. 7 is a schematic diagram of negotiation flow according to an embodiment of the present invention.

Detailed Description

For a clearer understanding of the objects, aspects and advantages of the present application, reference is made to the following description and accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein shall have the same general meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of this application do not denote a limitation of quantity, either in the singular or the plural. The terms "comprises," "comprising," "including," "has," "having," and any variations thereof, as referred to in this application, are intended to cover a non-exclusive inclusion. Reference in this application to "electrically connected," "coupled," and the like is not intended to be limited to physical or mechanical electrical connections, but may include electrical connections, whether direct or indirect. Reference to "a plurality" in this application means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. In general, the character "/" indicates a relationship in which the objects associated before and after are an "or". The terms "first," "second," "third," and the like in this application are used for distinguishing between similar items and not necessarily for describing a particular sequential or chronological order.

The PD protocol (Power Delivery) is a fast charging specification established by the USB-IF organization, and is one of the mainstream fast charging protocols at present, and both the mainstream TYPE-C interface mobile phone and Apple mobile phone already support the PD protocol. The utility model provides a multiplexing charging system and portable power source time sharing to make the treasured that charges can support the quick charge function of TYPE-C interface cell-phone and Apple cell-phone simultaneously, and solve and adopt two sets of PD control circuit to cause the increase of the precious cost of charging and the extravagant technical problem of resource among the prior art.

In one embodiment, a time-multiplexed charging system includes: the device comprises a controller, a first protocol module, a load detection module, a plurality of output interfaces, a switch module and an energy storage module; the load detection module is electrically connected with the plurality of output interfaces and the controller respectively and is used for determining a target output interface accessed to a load; the controller is respectively electrically connected with the first protocol module and the switch module, the first protocol module is respectively electrically connected with the plurality of output interfaces through the switch module, and the controller is used for controlling the conduction mode of the switch module according to the target output interface; the controller is also electrically connected with the energy storage module, and the energy storage module is respectively electrically connected with the plurality of output interfaces.

Illustratively, the load detection module detects the output interface to determine that there is a target output interface for load access, and sends the target output interface information to the controller. The load detection module includes a load detection circuit or an electronic device in the prior art, for example, a load detection circuit in a TP4201b power management chip or a single chip device capable of acquiring a port signal. Specifically, a pull-up resistor is arranged in the time-sharing multiplexing charging system, and a pull-down resistor is arranged in the load equipment. When the load equipment is connected with the output interface, the level of the output interface changes, and the load detection module acquires the change information of the level, so that the load access detection of the output interface is realized, and the target output interface is further determined.

Illustratively, the controller receives the target output interface information and controls the conduction mode of the switch module based on the target output interface, so as to realize the conduction between the first protocol module and the target output interface. The controller is a central processing unit of a power management chip in the prior art, has functions of information calculation, instruction sending and the like, and comprises but is not limited to a micro processor such as a single chip microcomputer and a multi-chip microcomputer. The on-off control of the switch module is realized through the conventional control logic in the microprocessor.

Illustratively, after the switch module is turned on, the first protocol module acquires a negotiation signal of the target output interface, where the negotiation signal is a negotiation signal sent by the load device to the target output interface, and is used to determine the charging power supported by the load device and the mobile power supply. And after acquiring the negotiation signal, the first protocol module analyzes the negotiation signal to obtain a negotiation result of whether the corresponding charging power is supported, and sends the negotiation result to the controller. The first protocol module is a charging protocol chip in the prior art, such as a PD fast charging protocol chip, and the negotiation process is a process in which the charging protocol chip determines whether the load device and the mobile power supply support corresponding charging power.

Illustratively, after the controller obtains the negotiation result, if the negotiation result is that the corresponding charging power is supported, that is, after the negotiation is successful, the controller controls the energy storage module to supply power to the load device of the target output interface; and if the negotiation fails, controlling the energy storage module not to supply power to the load equipment of the target output interface. The power supply voltage from the energy storage module to the load device may be a charging voltage negotiated by the load device and the mobile power supply, or may be a preset charging voltage.

For example, the number of the output interfaces in this embodiment may be 2, 3 or more.

Referring to fig. 1, fig. 1 is a block diagram of a time-sharing multiplexing charging system according to an embodiment of the present invention. In one embodiment, the time-division multiplexing charging system includes: the controller 100, the first protocol module 200, the load detection module 300, the first output interface 400, the second output interface 500, the switch module 600, and the energy storage module 700; the load detection module 300 is electrically connected to a target output interface and the controller 100, respectively, where the target output interface is an output interface of the first output interface 400 and the second output interface 500 that is connected to a load; the controller 100 is electrically connected to the first protocol module 200 and the switch module 600, the first protocol module 200 is electrically connected to the first output interface 400 and the second output interface 500 through the switch module 600, and the controller 100 is configured to control a conduction mode of the switch module 600 according to a target output interface; the controller 100 is further electrically connected to the energy storage module 700, and the energy storage module 700 is electrically connected to the first output interface 400 and the second output interface 500, respectively.

Illustratively, the load detection module 300 is configured to detect load conditions of the first output interface 400 and the second output interface 500, determine that there is a target output interface for load access, and send information of the target output interface to the controller 100.

Specifically, the identifiers of the first output interface 400 and the second output interface 500 are respectively set, and when the target output interface is connected to the load, the identifier information of the target output interface is sent to the controller 100 as the target output interface information; alternatively, the high and low levels corresponding to the first output interface 400 and the second output interface 500 are set, respectively, and the level information is set as the target output interface information.

Illustratively, the controller 100 obtains the target output interface information sent by the load detection module 300, and further determines a corresponding target output interface, and controls the conduction mode of the switch module 600 based on the target output interface information. Specifically, if the first output interface 400 is the target output interface, the switch module 600 controls the first output interface 400 to be conducted with the first protocol module 200; if the second output interface 500 is the target output interface, the second output interface 500 is controlled to be connected to the first protocol module 200 by the open module.

For example, after the switch module 600 is turned on, the first protocol module 200 obtains a negotiation signal of the target output interface, where the negotiation signal is a negotiation signal sent by the load device to the target output interface, so as to determine the charging power supported by the load device and the mobile power supply. After obtaining the negotiation signal, the first protocol module 200 parses the negotiation signal to obtain a negotiation result of whether the corresponding charging power is supported, and sends the negotiation result to the controller 100.

For example, after the controller 100 obtains the negotiation result, if the negotiation result is that the corresponding charging power is supported, that is, after the negotiation is successful, the controller 100 controls the energy storage module 700 to supply power to the load device of the target output interface at the first voltage; if the negotiation fails, the energy storage module 700 is controlled not to supply power to the load device of the target output interface. The first voltage may be a charging voltage negotiated by the load device and the mobile power supply, or may be a preset charging voltage.

The time-division multiplexing charging system provided in this embodiment includes: the device comprises a controller, a first protocol module, a load detection module, a plurality of output interfaces, a switch module and an energy storage module; the load detection module is electrically connected with the plurality of output interfaces and the controller respectively and is used for determining a target output interface accessed to a load; the controller is respectively electrically connected with the first protocol module and the switch module, the first protocol module is respectively electrically connected with the plurality of output interfaces through the switch module, and the controller is used for controlling the conduction mode of the switch module according to the target output interface; the controller is also electrically connected with the energy storage module, and the energy storage module is respectively electrically connected with the plurality of output interfaces. The output interface of the access load is detected through the load detection module to determine the target output interface, and the negotiation signal of the target output interface is sent to the first protocol module through the controller and the switch module, so that the negotiation on the negotiation signals of the plurality of output interfaces is realized through the first protocol module, a protocol module is not required to be arranged for each output interface, the technical problems of cost increase of a charging treasure and resource waste caused by the fact that two sets of PD control circuits are adopted in the related technology are solved, the hardware cost of the charging treasure is reduced, and the use experience of a user is improved.

In another embodiment, the energy storage device further comprises a boosting module, the controller is electrically connected with the boosting module, and the energy storage module is electrically connected with the plurality of output interfaces through the boosting module respectively.

Illustratively, the time-division multiplexing charging system is further provided with a boosting module, which is used for boosting the output voltage of the energy storage module according to a control instruction of the controller and transmitting the boosted voltage to the load device on the output interface. The boosting module can be equipment with a voltage transformation function, such as a transformer.

Specifically, the boost module has a plurality of working modes, each working mode corresponds to different output voltages, and the controller controls the boost module to enter the corresponding working mode, so that the output voltages are matched with the load equipment of the output interface.

Optionally, the utility model provides a can also set up the step-down module among the multiplexing charging system of timesharing, control module links to each other with the step-down module, and energy storage module passes through step-down module and a plurality of output interface electric connection to be used for stepping down to energy storage module's output voltage.

Referring to fig. 2, fig. 2 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention. In one embodiment, the energy storage module 700 further includes a boost module 800, the controller 100 is electrically connected to the boost module 800, the energy storage module 700 is electrically connected to the first output interface 400 and the second output interface 500 through the boost module 800, the controller 100 controls the boost module 800 to enter a first operation mode, and transmits the electric energy stored in the energy storage module 700 to a load on the output interface through the boost module 800, wherein in the first operation mode, the boost module 800 boosts the output voltage of the energy storage module 700 to a first voltage.

The boost module 800 is configured to regulate the output voltage of the energy storage module 700 to a first voltage according to a control command of the controller 100, and supply power to a load device at the first voltage. Specifically, the boost module 800 has a plurality of operating modes, and each operating mode corresponds to a different output voltage. The controller 100 controls the boost module 800 to enter a first working mode, and the boost module in the first working mode can boost the output voltage of the energy storage module 700 to obtain a first voltage and output the first voltage to the load device of the target output interface.

In this embodiment, the boost module is arranged in the time-division multiplexing charging system to realize the boost adjustment of the output voltage of the energy storage module, so as to obtain the output voltage meeting the charging requirement of the load device. The boost module is provided with a plurality of working modes, each working mode has corresponding output voltage, the output voltage is simple to control, and the flexibility of the output voltage is improved.

In another embodiment, the output interfaces are both USB type-C interfaces or both Lightning interfaces, so as to simultaneously support a plurality of load devices of the USB type-C interfaces or load devices of the Lightning interfaces.

Illustratively, the USB type-c interface has 4 pairs of TX/RX pins, 2 pairs of USB D +/D-pins, 1 pair of SBU pins, 1 pair of CC pins, 2 pairs of VBUS pins, and 2 pairs of GND pins. The Lightning interface has 2 pairs of ACC pins, 4 pairs of Data pins, 1 pair of Host Power pins, and 1 pair of GND pins.

Illustratively, the load devices include, but are not limited to, devices with USB type-C interfaces, such as a mobile phone terminal, a tablet terminal, a watch terminal, a portable computer terminal, a camera, and an audio playback device based on the android system, and any two of the load devices may be powered by the mobile power supply in this embodiment at the same time.

In one embodiment, the first output interface 400 and the second output interface 500 are both USB type-C interfaces or both Lightning interfaces.

In this embodiment, the plurality of output interfaces are all USB type-C interfaces or all Lightning interfaces, so that the mobile power supply can simultaneously support load devices of a plurality of USB type-C interfaces or simultaneously support load devices of a plurality of Lightning interfaces.

In another embodiment, the plurality of output interfaces includes a USB type-C interface and a Lightning interface.

Specifically, the output interface may include a USB type-C interface and a Lightning interface, so that the portable power source can support a load device of the USB type-C interface and a load device of the Lightning interface at the same time.

In one embodiment, the first output interface 400 is a Lightning interface, and the second output interface 500 is a USB type-C interface.

Specifically, the first load device includes, but is not limited to, a mobile terminal based on the IOS system, a tablet terminal based on the IOS system, a watch terminal based on the IOS system, an audio playing device, and the like, and the mobile power supply supplies power to the first load device through the first output interface 400; the second load device includes, but is not limited to, a mobile terminal based on an android system, a tablet terminal, a watch terminal, a portable computer terminal, a camera, an audio playing device, and the like, and the mobile power supply supplies power to the second load device through the second output interface 500.

In another embodiment, the energy storage device further comprises an input interface, and the input interface is electrically connected with the energy storage module and the external power supply respectively.

In an exemplary embodiment, the time-division multiplexing charging system is further provided with an input interface, and the external power supply supplies electric energy to the energy storage module through the input interface. Specifically, the input interface includes but is not limited to a Micro-USB interface, a USB type-c interface and a Lightning interface; the external power supply can be an independent mobile power supply or can be an alternating current input of 220V.

Referring to fig. 3, fig. 3 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention. In one specific embodiment, the method further comprises the following steps: the input interface 900, the input interface 900 is electrically connected to the energy storage module 700 and an external power source, respectively, and the external power source charges the energy storage module 700 through the input interface 900.

In another embodiment, the controller further includes a second protocol module, the controller is electrically connected to the switch module and the second protocol module, and the second protocol module is electrically connected to the plurality of output interfaces through the switch module.

Illustratively, a second protocol module is further arranged in the time-sharing multiplexing charging system. After the load detection module sends the target output interface information to the controller, the controller controls the switch module to be conducted based on the target output interface information so that the target output interface is communicated with the second protocol module. And the second protocol module acquires a negotiation signal of the target output interface, negotiates and sends a negotiation result to the controller, and the controller controls the energy storage module to supply power to the load equipment of the target output interface according to the negotiation result.

Referring to fig. 4, fig. 4 is a block diagram of a time-sharing multiplexing charging system according to another embodiment of the present invention. In one specific embodiment, the method further comprises the following steps: the third output interface 1000 and the second protocol module 1100, the load detection module 300 is electrically connected to the third output interface 1000 and the controller 100, respectively, and is configured to detect whether a load is accessed by the third output interface 1000, and send load access information to the controller 100; the controller 100 is electrically connected to the switch module 600 and the second protocol module 1100, the second protocol module 1100 is electrically connected to the third output interface 1000 through the switch module 600, the controller 100 controls the switch module 600 to transmit a negotiation signal of the third output interface 1000 to the second protocol module 1100 according to the load access information, the second protocol module 1100 is configured to negotiate according to the negotiation signal and send a negotiation result to the controller 100, and the controller 100 controls the energy storage module 700 to charge a load corresponding to the third output interface 1000 with a second voltage according to the negotiation result.

For example, the load detection module 300 may be further configured to detect a load access condition of the third output interface 1000, and send information of the third output interface 1000 to the controller 100 as load access information when a load device exists in the third output interface 1000.

Illustratively, the controller 100 obtains the load access information sent by the load detection module 300 and controls the switch module 600, so that the second protocol module 1100 and the third output interface 1000 are turned on through the switch module 600.

For example, after the switch module 600 is turned on, the second protocol module 1100 obtains a negotiation signal of the third output interface 1000, where the negotiation signal is a negotiation signal sent by the load device to the third output interface 1000, so as to determine the charging power supported by the load device and the mobile power supply. After acquiring the negotiation signal, the second protocol module 1100 parses the negotiation signal to obtain a negotiation result indicating whether the corresponding charging power is supported, and sends the negotiation result to the controller 100.

For example, after the controller 100 obtains the negotiation result, if the negotiation result is that the corresponding charging power is supported, that is, after the negotiation is successful, the controller 100 controls the energy storage module 700 to supply power to the load device of the third output interface 1000 with the second voltage. The second voltage is a charging voltage negotiated by the load device and the mobile power supply. Specifically, the energy storage module 700 is connected to the third output interface 1000, and supplies power to the corresponding third output interface 1000 with the second voltage according to the control instruction of the controller 100.

In this embodiment, the second protocol module is set in the time-division multiplexing charging system, so as to supply power to the load device that cannot negotiate with the first protocol module through the second protocol module, and the load detection module, the controller, the switch module, and the energy storage module need not to be separately set.

In another embodiment, the output interface further comprises a Micro-USB interface.

Illustratively, although most of the current load devices have a USB type-c interface or a Lightning interface supporting the PD protocol charging function, some of the load devices support only a Micro-USB interface. The output interface is set to be the Micro-USB interface, so that the application scene of the mobile power supply is improved, and further the user experience is improved.

Referring to fig. 5, fig. 5 is a block diagram of a time-sharing charging system according to another embodiment of the present invention. In another embodiment, the output interface includes a first output interface 400 and a second output interface 500, the switch module 600 further includes a first switch unit 610 and a second switch unit 620, the first switch unit 610 includes a first connection end, a second connection end, a third connection end and a first control end, the first connection end is connected to the first output interface 400, the second connection end is electrically connected to the first protocol module 200, the third connection end is electrically connected to the load detection module 300, the first control end is electrically connected to the controller 100, the second switch unit 620 includes a fourth connection end, a fifth connection end, a sixth connection end and a second control end, the fourth connection end is connected to the second output interface 500, the fifth connection end is electrically connected to the first protocol module 200, the sixth connection end is electrically connected to the load detection module 300, and the second control end is electrically connected to the controller 100.

Illustratively, the switch module 600 includes a first switch unit 610 and a second switch unit 620 to control the first output interface 400 and the second output interface 500, respectively.

Specifically, when the load detection module 300 detects that the first output interface 400 has a load access, the first switch unit 610 is turned on, the first protocol module 200 obtains a negotiation signal of the first output interface 400 and analyzes the negotiation signal to obtain a negotiation result whether the corresponding charging power is supported, and sends the negotiation result to the controller 100. After the controller 100 obtains the negotiation result, if the negotiation result is successful, the energy storage module 700 is controlled to supply power to the load device of the first output interface 400 with the first voltage.

Specifically, when the load detection module 300 detects that the second output interface 500 has a load access, the second switch unit 620 is turned on, the first protocol module 200 obtains and analyzes a negotiation signal of the second output interface 500 to obtain a negotiation result of whether the corresponding charging power is supported, and sends the negotiation result to the controller 100. After the controller 100 obtains the negotiation result, if the negotiation result is successful, the energy storage module 700 is controlled to supply power to the load device of the second output interface 500 with the first voltage.

Set up switch module 600 into two switch units alone in this embodiment for every switch unit all can control corresponding output interface, and the mode of setting is simple and easily controls the circuit, thereby has reduced the hardware cost of the multiplexing charging system of timesharing.

In another embodiment, the switching module includes a field effect transistor.

Illustratively, the fet is a semiconductor device that controls the electric field effect of the input loop to control the output loop current, and includes a junction fet and an insulated gate fet. The field effect transistor has the advantages of high temperature stability, strong radiation resistance, noise interference resistance and the like, so that the stability of the time-sharing multiplexing charging system is improved.

In another embodiment, the present invention further provides a mobile power supply, including the time-sharing multiplexing charging system in any of the above embodiments.

In another embodiment, the present embodiment further provides an application scenario of the time-division multiplexing charging system. Specifically, the multiplexing charging system of timesharing includes three output interface USB type-C interface, Lightning interface and Micro-USB interface, and three output interface all supplies power through same set of energy storage module 700 and buck-boost module, and wherein, USB type-C interface, Lightning interface still multiplexing same PD protocol chip, and the PD protocol chip can negotiate the negotiation signal of USB type-C interface, Lightning interface respectively to realize timesharing multiplexing.

Specifically, taking the USB type-c interface as an example, the pins of the USB type-c interface are shown in the following table, where the CC pin is used to detect the connection status of the output interface. Pins used in the negotiation process are CC1 and CC2, a pull-down resistor and a pull-up resistor are respectively arranged in the load equipment and the mobile power supply, connection condition detection is carried out through the pull-up resistor and the pull-down resistor, and a forward insertion input or a reverse insertion input of a USB type-c interface is carried out.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a time-sharing multiplexing charging system according to an embodiment of the present invention. Specifically, the switch Q1, the switch Q5 and the switch Q6 are control switches of a Lightning interface, a USB type-C interface and a Micro-USB interface, respectively. When the output interface is not connected with a load, the corresponding switch is switched off to prevent the voltage output by the energy storage module from entering the output interface and further damaging equipment. When the output interface detects that the load is connected, the corresponding switch is closed so as to charge the load equipment according to preset logic.

Specifically, since the pull-down resistor of the CC pin is integrated inside the cable of the load device of the Lightning interface, the PD protocol chip determines that the Lightning interface has a load access all the time, and therefore, when the CC pin of the portable power source is not used, the circuit connection needs to be disconnected through the switch Q2 and the switch Q4.

Specifically, since the CC pin is disconnected from the load connection by default, an additional load current detection circuit is required for load connection detection. Specifically, a virtual voltage with limited loading capacity is generated on the VBUS pin, when the load device inputs the virtual voltage on the corresponding VBUS pin is pulled down, and the controller determines which output interface has load access by detecting the voltage value on the VBUS pin.

Specifically, after the load is connected, the charging is performed in a 5V power supply mode by default, and the charging current is sampled to judge whether effective load connection exists or not and judge whether the load equipment exits or not. In one embodiment, the voltage difference between the two ends of the switch Q1, the switch Q5 and the switch Q6 is collected, and the magnitude of the charging current is calculated through the internal resistances of the switch Q1, the switch Q5 and the switch Q6, without additionally arranging a sampling resistor. In another embodiment, an additional sampling resistor is added to the VBUS pin or the GND pin, and the charging current is calculated by sampling the voltage across the resistor and the resistance value.

Referring to fig. 7, fig. 7 is a schematic diagram of a negotiation flow according to an embodiment of the present invention. Specifically, when the mobile power supply is in a low-power standby state, the fast charge negotiation process can be started by pressing an external key, shaking the mobile power supply to trigger an internal shaking switch, inserting a charging cable into the mobile power supply to detect and the like as trigger conditions. Firstly, the mobile power supply supplies power by default in a common 5V mode, and switches off the switches of the three output interfaces so as to ensure that load equipment cannot be damaged. And then sampling the charging current, and if the charging current is greater than a preset current threshold, judging that the load access is effective. When the charging currents of the multi-path output interfaces are all larger than the current threshold, the output is locked at 5V, and the charging equipment which does not support quick charging is prevented from being damaged. When the charging currents of the three output interfaces are all smaller than the current threshold, it is judged that no load is connected, at the moment, the mobile power supply is powered off by 5V, the switch of the output interface is closed again, and the mobile power supply enters the standby mode again. And when the charging current of one output interface is larger than the current threshold, entering a fast charging negotiation stage, and starting a negotiation switch of a corresponding channel for negotiation. If the Lightning cable is detected to be inserted, the corresponding CC pin is connected, PD quick charging negotiation is carried out, the switches of the other two output interfaces are closed after the PD quick charging negotiation is successful, voltage output is adjusted according to the negotiated voltage value, and a quick charging mode is entered; if the USB type-c cable is detected to be inserted, the corresponding CC pin is connected to perform PD fast charging negotiation, or other fast charging protocols are negotiated through a DP/DM interface, after the negotiation is successful, switches of the other two output interfaces are closed, voltage output is adjusted according to the negotiated voltage value, and a fast charging mode is entered; if the detected Micro-USB cable is inserted, performing negotiation of other fast charging protocols through the DP/DM interface, after the negotiation is successful, closing switches of the other two paths of output interfaces, adjusting voltage output according to the negotiated voltage value, and entering a fast charging mode. And if the negotiation fails, judging that the load equipment does not support the quick charging, still supplying power according to a 5V mode, and ending the negotiation process.

It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be derived by a person skilled in the art from the examples provided herein without any inventive step, shall fall within the scope of protection of the present application.

It is obvious that the drawings are only examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application can be applied to other similar cases according to the drawings without creative efforts. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference throughout this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly or implicitly understood by one of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the patent protection. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A time division multiplexed charging system, comprising: the device comprises a controller, a first protocol module, a load detection module, a plurality of output interfaces, a switch module and an energy storage module;

the load detection module is electrically connected with the plurality of output interfaces and the controller respectively, and is used for determining a target output interface accessed to a load;

the controller is electrically connected with the first protocol module and the switch module respectively, the first protocol module is electrically connected with the plurality of output interfaces through the switch module respectively, and the controller is used for controlling the conduction mode of the switch module according to the target output interface;

the controller is further electrically connected with the energy storage module, and the energy storage module is respectively electrically connected with the plurality of output interfaces.

2. The time-sharing multiplexing charging system according to claim 1, further comprising a boost module, wherein the controller is electrically connected to the boost module, and the energy storage module is electrically connected to the plurality of output interfaces through the boost module.

3. The time-sharing multiplexing charging system according to claim 1, wherein the output interfaces are all USB type-C interfaces or all Lightning interfaces.

4. The time-sharing multiplexing charging system according to claim 1, wherein the output interface comprises a USB type-C interface and a Lightning interface.

5. The time-sharing multiplexing charging system according to claim 1, further comprising an input interface, wherein the input interface is electrically connected to the energy storage module and an external power supply, respectively.

6. The time-sharing multiplexing charging system according to claim 1, further comprising a second protocol module, wherein the controller is electrically connected to the switch module and the second protocol module, and the second protocol module is electrically connected to the plurality of output interfaces through the switch module.

7. The time-multiplexed charging system of claim 6, wherein the output interface further comprises a Micro-USB interface.

8. The time-sharing multiplexing charging system according to claim 1, wherein the output interface includes a first output interface and a second output interface, the switch module further includes a first switch unit and a second switch unit, the first switch unit includes a first connection end, a second connection end, a third connection end and a first control end, the first connection end is connected to the first output interface, the second connection end is electrically connected to the first protocol module, the third connection end is electrically connected to the load detection module, the first control end is electrically connected to the controller, the second switch unit includes a fourth connection end, a fifth connection end, a sixth connection end and a second control end, the fourth connection end is connected to the second output interface, and the fifth connection end is electrically connected to the first protocol module, the sixth connecting end is electrically connected with the load detection module, and the second control end is electrically connected with the controller.

9. The time-multiplexed charging system of claim 8, wherein the switching module comprises a field effect transistor.

10. A mobile power supply, characterized in that it comprises a time-multiplexed charging system according to any one of claims 1 to 9.

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