Multi-port quick charging mobile power supply circuit and control method

Abstract

The invention particularly relates to a multi-port quick-charging mobile power supply circuit and a control method, the multi-port quick-charging mobile power supply circuit comprises a plurality of independent batteries, each independent battery is electrically connected with the input ends of a plurality of control switches through power supply leads, and the output end of each of the plurality of control switches is electrically connected with a group of USB output interfaces; the plurality of control switches are electronic multi-throw switches, and the states of the electronic multi-throw switches are controlled to electrically connect one or more groups of USB output interfaces with one or more independent batteries. One or more groups of USB output interfaces are electrically connected with one or more independent batteries, so that the battery power distribution condition of each group of USB output interfaces can be flexibly distributed according to specific conditions such as a fast charging protocol of the USB output interfaces, requests of the USB output interfaces and the like, conversion between common interfaces and the fast charging interfaces is flexible, and the number of the fast charging interfaces is larger.

Description

Technical Field

[0001] The invention belongs to the field of mobile power supplies, and in particular relates to a multi-port fast-charging mobile power supply circuit and a control method. Background Art

[0002] The existing mobile power supplies generally have low energy storage and generally only have an independent charging protocol control circuit. This results in that when charging external devices, the existing mobile power supplies are almost unable to achieve fast charging for multiple devices at the same time. Of course, there are some mobile power supplies on the market that can support fast charging for two or more external devices at the same time. When setting up this kind of mobile power supply, each fast charging output port is equipped with a set of independent charging protocol control circuits that are independent of each other. There is a limit on the number of fast charging interfaces for charging external devices, that is, the number of fast charging interfaces is fixed, and it is difficult to convert between ordinary interfaces and fast charging interfaces. Summary of the invention

[0003] The object of the present invention is to provide a multi-port fast charging mobile power supply circuit and a control method to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A multi-port fast-charging mobile power supply circuit, a multi-port fast-charging mobile power supply circuit, comprising a plurality of independent batteries, each of which is electrically connected to the input end of a plurality of control switches through a power lead, and the output end of each of the plurality of control switches is electrically connected to a group of USB output interfaces; the plurality of control switches all adopt electronic multi-throw switches, and the state of the electronic multi-throw switches is controlled to electrically connect one or more groups of USB output interfaces to one or more independent batteries.

[0006] Preferably, the MCU is used to control the state of the electronic multi-throw switch. The specific steps are as follows: connect the interface of the MCU and the electronic multi-throw switch, write a program on the MCU, and control the state of the electronic multi-throw switch by sending instructions. The MCU program needs to parse the instructions and switch the output state of the electronic multi-throw switch according to the instructions. The switching between multiple output states of the electronic multi-throw switch can be controlled by sending different instructions.

[0007] Preferably, three independent batteries are included, each of which is electrically connected to the input ends of three control switches through a power lead, and the output end of each control switch is electrically connected to a group of USB output interfaces. The control switches all adopt electronic multi-throw switches, and the state of the electronic multi-throw switches is controlled to electrically connect one group, two groups, or three groups of USB output interfaces with one, two, or three independent batteries.

[0008] Preferably, electrically connecting 1, 2 or 3 groups of USB output interfaces with 1, 2 or 3 independent batteries specifically includes electrically connecting any group of USB output interfaces with any one of the 3 independent batteries, electrically connecting any two groups of USB output interfaces with any two of the 3 independent batteries, and electrically connecting 3 groups of USB output interfaces and 3 independent batteries one-to-one.

[0009] Preferably, it also includes a power management circuit: the power management circuit is responsible for converting the battery voltage of the mobile power supply into an output voltage suitable for each interface, and performing voltage or current stabilization.

[0010] Preferably, it also includes a current detection circuit: the current detection circuit is used to detect the output current of each interface and feed back the current value to the MCU. Preferably, it also includes an overcurrent protection circuit: the overcurrent protection circuit is used to prevent the mobile power supply from overheating or damage when the output current is too large. When it is detected that the output current exceeds the preset value, the overcurrent protection circuit will automatically cut off the output.

[0011] Preferably, it also includes a multi-port management circuit: the multi-port management circuit is used to manage and control the output voltage and current of multiple interfaces, and realize simultaneous output or alternating output of a single or multiple interfaces according to the user's instructions and the status of the interface.

[0012] Preferably, it also includes an LED indication circuit: the LED indication circuit is used to indicate the working state and charging state of the mobile power supply.

[0013] The present application also discloses a multi-port fast-charging mobile power supply circuit control method, including: the MCU controls the state of the electronic multi-throw switch according to the fast charging protocol of the USB output interface and the request signal of the USB output interface, and electrically connects one or more groups of USB output interfaces to one or more independent batteries.

[0014] Beneficial Effects

[0015] The present application electrically connects one or more groups of USB output interfaces to one or more independent batteries, and can flexibly allocate the battery power distribution of each group of USB output interfaces according to the fast charging protocol of the USB output interface, the request of the USB output interface and other specific circumstances. The conversion between the ordinary interface and the fast charging interface is flexible, and the number of fast charging interfaces is greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a block diagram of the multi-port fast charging mobile power supply circuit. Figure 2 The present invention is a specific block diagram of a multi-port fast charging mobile power supply circuit. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] The present application discloses a multi-port fast charging mobile power supply circuit, including multiple independent batteries, such as Figure 1 The first independent battery, the second independent battery, ... the Nth independent battery, each of which is electrically connected to the input end of a plurality of control switches through a power lead, the plurality of control switches including control switch 1a, control switch 2a, control switch 3a ... control switch na, and the output end of each of the plurality of control switches is electrically connected to a set of USB output interfaces. Figure 1 The multiple groups of USB output interfaces include a first group of USB output interface 1b, a second group of USB output interface 2b, a third group of USB output interface 3b, ... the nth group of USB output interface nb; the several control switches all adopt electronic multi-throw switches, and also include an MCU. The MCU is responsible for receiving and processing user input instructions, and controlling the output voltage and current of each interface according to the instructions. The MCU can be used to control the state of the electronic multi-throw switch. The specific steps are as follows: 1. Connect the MCU and the interface of the electronic multi-throw switch, write a program on the MCU, and control the state of the electronic multi-throw switch by sending instructions. The MCU program needs to parse the instructions and switch the output state of the electronic multi-throw switch according to the instructions. The switching between multiple output states of the electronic multi-throw switch can be controlled by sending different instructions.

[0019] Controlling the state of the electronic multi-throw switch is used to electrically connect one or more groups of USB output interfaces to one or more independent batteries. By electrically connecting one or more groups of USB output interfaces to one or more independent batteries, the battery power distribution of each group of USB output interfaces can be flexibly allocated according to the specific conditions such as the fast charging protocol of the USB output interface and the request of the USB output interface. The conversion between the ordinary interface and the fast charging interface is flexible, and the number of fast charging interfaces is greater; Figure 2A specific embodiment includes three independent batteries, namely a first independent battery, a second independent battery, and a third independent battery. Each independent battery is electrically connected to the input end of three control switches through a power lead. The three control switches include a control switch 1a, a control switch 2a, and a control switch 3a. The output end of each control switch is electrically connected to a group of USB output interfaces. The control switches are all electronic multi-throw switches. The state of the electronic multi-throw switches is controlled to electrically connect one or two or three groups of USB output interfaces to one or two or three independent batteries, and one or two or three groups of USB output interfaces are electrically connected to one or two or three independent batteries. The output interface is electrically connected to 1 or 2 or 3 independent batteries, specifically including electrically connecting any group of USB output interfaces to any one of the 3 independent batteries, electrically connecting any two groups of USB output interfaces to any two of the 3 independent batteries, and electrically connecting 3 groups of USB output interfaces to 3 independent batteries one-to-one. In the prior art, if there are 3 groups of USB output interfaces, there are usually only 3 fast charging output interfaces at most. In the present application, 1 or 2 or 3 groups of USB output interfaces are electrically connected to 1 or 2 or 3 independent batteries, so there are at most 9 fast charging output interfaces. Obviously, the number of fast charging interfaces is greater.

[0020] A multi-port fast charging mobile power circuit also includes a power management circuit: the power management circuit is responsible for converting the battery voltage of the mobile power into an output voltage suitable for each interface, and stabilizing the voltage or current. The power management circuit of the mobile power is mainly responsible for converting the voltage and current of the external power input into the working voltage required by the electronic equipment inside the mobile power. At the same time, it is also necessary to perform charging management and discharge management to ensure the normal use and charging safety of the mobile device. The power management circuit usually includes the following main parts: 1. Input filter circuit: used to filter out interference signals in the external power supply to protect the mobile device from damage. 2. Charging management chip: according to the charging requirements of the mobile device, control the size of the charging current and the height of the charging voltage, ensuring charging safety while also ensuring the battery life of the mobile device. 3. Discharge management chip: according to the discharge requirements of the mobile device, control the size of the discharge current and the stability of the voltage to ensure that the mobile device can work normally.

[0021] A multi-port fast charging mobile power supply circuit also includes a current detection circuit: the current detection circuit is used to detect the output current of each interface and feed back the current value to the MCU. The current detection circuit usually includes the following parts: 1. Current detection resistor: used to detect the size of the charging current and convert the current signal into a voltage signal. 2. Signal conditioning circuit: amplifies, filters, and processes the voltage signal output by the current detection resistor so that it can be processed by subsequent circuits.

[0022] A multi-port fast charging mobile power supply circuit also includes an overcurrent protection circuit: the overcurrent protection circuit is used to prevent the mobile power supply from overheating or damage when the output current is too large. When the output current is detected to exceed the preset value, the overcurrent protection circuit will automatically cut off the output. It includes the following parts: 1. Current detection element: used to monitor the size of the charging current in real time and convert it into a signal that can be processed by the circuit. 2. Detection circuit: amplify, filter and other processes the signal of the current detection element for subsequent circuit analysis. 3. Protection circuit: judge whether there is an overcurrent situation based on the signal output by the detection circuit. If there is an overcurrent situation, the protection circuit will immediately cut off the charging current to protect the safety of the device and the battery. At the same time, the overcurrent protection circuit usually has some other functions, such as short circuit protection, overvoltage protection, etc., to deal with safety issues in different situations.

[0023] A multi-port fast charging mobile power circuit also includes a multi-port management circuit: the multi-port management circuit is used to manage and control the output voltage and current of multiple interfaces, and realize the simultaneous output or alternating output of a single or multiple interfaces according to the user's instructions and the status of the interface. It is mainly responsible for the following functions: 1. Distribution of output voltage and current: the multi-port management circuit will allocate appropriate voltage and current according to the needs of each interface to ensure that multiple devices can work normally. 2. Identification of charging protocol: the multi-port management circuit will select the appropriate charging protocol according to different charging devices to ensure the safety and efficiency of charging. 3. Management of charging and discharging: the multi-port management circuit will perform corresponding management according to the charging and discharging status of the device to ensure the normal use of the mobile power supply. The multi-port management circuit usually includes: logic control circuit: used to control the output of voltage and current, as well as the switching between various interfaces to ensure the normal charging and discharging.

[0024] A multi-port fast charging mobile power supply circuit also includes an LED indication circuit: the LED indication circuit is used to indicate the working status and charging status of the mobile power supply. It includes the following parts: 1. LED indicator: used to display the charging status and power level of the mobile power supply. 2. Power detection circuit: used to detect the power level of the mobile power supply and

[0025] The information is converted into a signal that can be processed by the circuit to control the on and off of the LED indicator. 3. Control circuit: According to the signal of the power detection circuit, the LED indicator is controlled to indicate the charging status and power status of the mobile power supply.

[0026] The embodiments that need to be protected in this application include:

[0027] A multi-port fast-charging mobile power circuit includes multiple independent batteries, each of which is electrically connected to the input end of a plurality of control switches through a power lead, and the output end of each of the plurality of control switches is electrically connected to a group of USB output interfaces; the plurality of control switches all adopt electronic multi-throw switches, and the state of the electronic multi-throw switches is controlled to electrically connect one or more groups of USB output interfaces to one or more independent batteries.

[0028] Preferably, the MCU is used to control the state of the electronic multi-throw switch. The specific steps are as follows: connect the interface of the MCU and the electronic multi-throw switch, write a program on the MCU, and control the state of the electronic multi-throw switch by sending instructions. The MCU program needs to parse the instructions and switch the output state of the electronic multi-throw switch according to the instructions. The switching between multiple output states of the electronic multi-throw switch can be controlled by sending different instructions.

[0029] Preferably, three independent batteries are included, each of which is electrically connected to the input ends of three control switches through a power lead, and the output end of each control switch is electrically connected to a group of USB output interfaces. The control switches all adopt electronic multi-throw switches, and the state of the electronic multi-throw switches is controlled to electrically connect one group, two groups, or three groups of USB output interfaces with one, two, or three independent batteries.

[0030] Preferably, electrically connecting 1, 2 or 3 groups of USB output interfaces with 1, 2 or 3 independent batteries specifically includes electrically connecting any group of USB output interfaces with any one of the 3 independent batteries, electrically connecting any two groups of USB output interfaces with any two of the 3 independent batteries, and electrically connecting 3 groups of USB output interfaces and 3 independent batteries one-to-one.

[0031] Preferably, it also includes a power management circuit: the power management circuit is responsible for converting the battery voltage of the mobile power supply into an output voltage suitable for each interface, and performing voltage or current stabilization.

[0032] Preferably, it also includes a current detection circuit: the current detection circuit is used to detect the output current of each interface and feed back the current value to the MCU. Preferably, it also includes an overcurrent protection circuit: the overcurrent protection circuit is used to prevent the mobile power supply from overheating or damage when the output current is too large. When it is detected that the output current exceeds the preset value, the overcurrent protection circuit will automatically cut off the output.

[0033] Preferably, it also includes a multi-port management circuit: the multi-port management circuit is used to manage and control the output voltage and current of multiple interfaces, and realize simultaneous output or alternating output of a single or multiple interfaces according to the user's instructions and the status of the interface.

[0034] Preferably, it also includes an LED indication circuit: the LED indication circuit is used to indicate the working state and charging state of the mobile power supply.

[0035] The present application also discloses a multi-port fast-charging mobile power supply circuit control method, including: the MCU controls the state of the electronic multi-throw switch according to the fast charging protocol of the USB output interface and the request signal of the USB output interface, and electrically connects one or more groups of USB output interfaces to one or more independent batteries.

[0036] In addition, an embodiment of the present application further provides a storage medium, wherein the storage medium is used to store a computer program, and the computer program is used to execute the method provided in the above embodiment.

[0037] The embodiments of the present application also provide a computer program product including instructions, which, when executed on a computer, enables the computer to execute the method provided in the above embodiments.

[0038] A person skilled in the art can understand that all or part of the steps of the above method embodiment can be completed by hardware related to program instructions. The above program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above method embodiment are executed. The above storage medium can be the following medium:

[0039] At least one of the following: read-only memory (ROM), RAM, magnetic disk, optical disk, or other media that can store program code.

[0040] The present application also discloses an electronic device, including a computer-readable storage medium, wherein the storage medium is used to store a computer program, and the computer program is used to execute the method provided in the above embodiment.

[0041] It should be noted that each embodiment in this specification is described in a progressive manner, and the same and similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments. The device and system embodiments described above are merely schematic, in which the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered by the protection scope of the present application.

Claims

1. Multi-port fast charging mobile power supply circuit, characterized in that: The invention comprises a plurality of independent batteries, each of which is electrically connected to the input end of a plurality of control switches through a power lead, and the output end of each of the plurality of control switches is electrically connected to a group of USB output interfaces; the plurality of control switches are all electronic multi-throw switches, and the state of the electronic multi-throw switches is controlled to electrically connect one or more groups of USB output interfaces to one or more independent batteries.

2. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: MCU is used to control the state of the electronic multi-throw switch. The specific steps are as follows: connect the interface of MCU and the electronic multi-throw switch, write a program on the MCU, and control the state of the electronic multi-throw switch by sending instructions. The MCU program needs to parse the instructions and switch the output state of the electronic multi-throw switch according to the instructions. The switching between multiple output states of the electronic multi-throw switch can be controlled by sending different instructions.

3. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: It comprises three independent batteries, each of which is electrically connected to the input end of three control switches through a power lead, and the output end of each control switch is electrically connected to a group of USB output interfaces. The control switches all adopt electronic multi-throw switches, and the state of the electronic multi-throw switches is controlled to electrically connect one group, two groups, or three groups of USB output interfaces with one, two, or three independent batteries.

4. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: Electrically connecting 1, 2 or 3 groups of USB output interfaces with 1, 2 or 3 independent batteries specifically includes electrically connecting any group of USB output interfaces with any one of the 3 independent batteries, electrically connecting any two groups of USB output interfaces with any two of the 3 independent batteries, and electrically connecting 3 groups of USB output interfaces and 3 independent batteries one-to-one.

5. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: It also includes a power management circuit: the power management circuit is responsible for converting the battery voltage of the mobile power supply into an output voltage suitable for each interface, and stabilizing the voltage or current.

6. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: It also includes a current detection circuit: the current detection circuit is used to detect the output current of each interface and feed back the current value to the MCU.

7. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: It also includes an overcurrent protection circuit: the overcurrent protection circuit is used to prevent the mobile power supply from overheating or damage when the output current is too large. When it is detected that the output current exceeds the preset value, the overcurrent protection circuit will automatically cut off the output.

8. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: It also includes a multi-port management circuit: the multi-port management circuit is used to manage and control the output voltage and current of multiple interfaces, and realize simultaneous output or alternating output of a single or multiple interfaces according to the user's instructions and the status of the interface.

9. The multi-port fast charging mobile power supply circuit according to claim 1, characterized in that: It also includes an LED indication circuit: the LED indication circuit is used to indicate the working state and charging state of the mobile power supply.

10. The multi-port fast charging mobile power circuit control method according to claim 1, characterized in that: The MCU controls the state of the electronic multi-throw switch according to the fast charging protocol of the USB output interface and the request signal of the USB output interface, and electrically connects one or more groups of USB output interfaces to one or more independent batteries.

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