A mobile power supply with intelligent self-locking power-off function

Abstract

The present invention discloses a mobile power supply with an intelligent self-locking power-off function, comprising a mobile power supply body and a control circuit. The OVP protection circuit is used to detect whether the input voltage is greater than 6V. If it is greater than 6V, the electrical connection between the main control IC and the charging circuit is disconnected to protect the main control IC. The charging management circuit and the battery protection board circuit are used to set the charging curve of the battery and protect the battery when it is over-voltage, over-current and short-circuited. When the mobile power supply body detects that the light load lasts for 30S, the main control IC sends a shutdown signal to the MCU control circuit, thereby controlling the intelligent self-locking circuit to disconnect, completing the operation of disconnecting the main board from the battery, and achieving intelligent switching between power on and power off. This circuit greatly enhances the durability, safety and reliability of the product.

Description

Technical Field

[0001] The invention relates to the technical field of mobile power supplies, in particular to a mobile power supply with an intelligent self-locking power-off function. Background Art

[0002] A mobile power bank is a portable charger that can be carried by an individual and can store electrical energy. It is mainly used to charge consumer electronic products such as handheld mobile devices, especially in situations where there is no external power supply. Its main components include: batteries for storing electrical energy, circuits for stabilizing output voltage, and most mobile power banks come with chargers to charge the built-in batteries.

[0003] Commonly used mobile power products generally have a static current of 100-500uA when in standby mode. This is not a problem under normal use. The main problem is that the product has been stored in a warehouse or the user has used the mobile power to discharge the power and has not recharged the product for a long time. Due to self-consumption of power, the battery inside the product becomes over-discharged, resulting in the possibility of battery swelling, causing the product to lose its original function.

[0004] In view of the above problems, the present invention provides a mobile power supply with an intelligent self-locking power-off function. Summary of the invention

[0005] The object of the present invention is to provide a mobile power supply with an intelligent self-locking power-off function, comprising a mobile power supply body and a control circuit. The control circuit is arranged inside the mobile power supply body to reduce the possibility of battery bulging, making it safer and more reliable, thereby solving the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a mobile power supply with an intelligent self-locking power-off function, comprising a mobile power supply body and a control circuit, wherein the control circuit is arranged inside the mobile power supply body, the mobile power supply body is provided with a battery, a USB connection plug and a power switch, the battery is arranged inside the mobile power supply body, and the USB connection plug and the power switch are both arranged at one end of the mobile power supply body;

[0007] The control circuit includes a charging circuit, an OVP protection circuit, a main control IC, a boost circuit, a light load detection circuit, a charging management circuit, an intelligent self-locking circuit, a battery protection circuit, a switch circuit, an MCU control circuit, an LED display circuit and an output circuit. The charging management circuit is electrically connected to the OVP protection circuit and the charging circuit, the boost circuit is electrically connected to the output circuit, the main control IC, the light load detection circuit, the intelligent self-locking circuit, the switch circuit and the MCU control circuit are all electrically connected and controlled by the button SWA, and are electrically connected through the Q1 connection circuit, the Q2 connection circuit and the Q3 connection circuit.

[0008] Preferably, the battery is a lithium battery.

[0009] Preferably, the main control IC is provided with an overvoltage and overcurrent detection circuit, the overvoltage and overcurrent detection circuit is integrated in the main control IC, and the overvoltage and overcurrent detection circuit is electrically connected to the MCU control circuit.

[0010] Preferably, the LED display circuit is electrically connected to the MCU control circuit and is provided with LED indicator lights. Four LED indicator lights are provided, each LED indicator light corresponds to 25% of the power level, and all LED indicator lights are on when the power level is fully charged.

[0011] Preferably, after the intelligent self-locking circuit is shut down under light load, the static current of the product is reduced to zero current, and after restarting, the power display has a memory function, that is, the display remains consistent with that before shutdown.

[0012] Preferably, the output circuit is provided with a USB-A port output circuit and a TYPC-C port output circuit, and the USB-A port output circuit and the TYPC-C port output circuit constitute the output circuit as a whole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This mobile power supply with intelligent self-locking power-off function is electrically connected to the OVP protection circuit and the charging circuit through the charging management circuit. When the adapter is inserted into the USB connection plug of the mobile power supply body through the wire, the voltage and current pass through the OVP protection circuit and then enter the charging management circuit part of the main control IC, and then enter the battery through the battery protection circuit. The OVP protection circuit is used to detect whether the input voltage is greater than 6V. If it is greater than 6V, the electrical connection between the main control IC and the charging circuit is disconnected to protect the main control IC. The charging management circuit and the battery protection board circuit are used to set the charging curve of the battery and protect the battery when it is overvoltage, overcurrent, or short circuit.

[0015] 2. The mobile power supply with intelligent self-locking power-off function electrically connects the main control IC, light load detection circuit, intelligent self-locking circuit, switch circuit and MCU control circuit. When the button SW is pressed, the main control IC starts and sends data to the MCU control circuit. The MCU control circuit controls the intelligent self-locking circuit to be opened for a long time through the I / O port, that is, the Q1 connection circuit is turned on for a long time, and then the Q2 connection circuit and the Q3 connection circuit are turned on. When the mobile power supply body detects that the light load lasts for 30S, the main control IC sends a shutdown signal to the MCU control circuit, thereby controlling the intelligent self-locking circuit to disconnect, completing the operation of disconnecting the mainboard and the battery, and achieving intelligent switching between power and no power. This circuit greatly enhances the durability, safety and reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the mobile power supply of the present invention;

[0017] Figure 2 is a control circuit diagram of the present invention;

[0018] Figure 3 It is a partial circuit diagram of the present invention.

[0019] In the figure: 1. Power bank body; 11. Battery; 12. USB connection plug; 13. Power switch; 2. Control circuit; 21. Charging circuit; 22. OVP protection circuit; 23. Main control IC; 231. Overvoltage and overcurrent detection circuit; 24. Boost circuit; 25. Light load detection circuit; 26. Charging management circuit; 27. Intelligent self-locking circuit; 28. Battery protection circuit; 29. ​​Switch circuit; 210. MCU control circuit; 211. LED display circuit; 2111. LED indicator light; 212. Output circuit; 2121. USB-A port output circuit; 2122. TYPC-C port output circuit; 2A. Button SW1; 2B. Q1 connection circuit; 2C. Q2 connection circuit; 2D. Q3 connection circuit. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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 creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-3 A mobile power source with an intelligent self-locking power-off function comprises a mobile power source body 1 and a control circuit 2, wherein the control circuit 2 is arranged inside the mobile power source body 1.

[0022] The mobile power source body 1 is provided with a battery 11, a USB connection plug 12 and a power switch 13. The battery 11 is arranged inside the mobile power source body 1. The USB connection plug 12 and the power switch 13 are both arranged at one end of the mobile power source body 1. The battery 11 is a lithium battery.

[0023] The control circuit 2 includes a charging circuit 21, an OVP protection circuit 22, a main control IC 23, a boost circuit 24, a light load detection circuit 25, a charging management circuit 26, an intelligent self-locking circuit 27, a battery protection circuit 28, a switch circuit 29, an MCU control circuit 210, an LED display circuit 211 and an output circuit 212. The main control IC 23 is provided with an overvoltage and overcurrent detection circuit 231, which is integrated in the main control IC 23 and is electrically connected to the MCU control circuit 210. The charging management circuit 26 is electrically connected to the OVP protection circuit 22 and the charging circuit 21. When the adapter is inserted into the USB connection plug 12 of the mobile power supply body 1 through the wire, the voltage and current pass through the OVP protection circuit 22 and then enter the charging management circuit 26 part of the main control IC 23, and then pass through the battery protection circuit 28 to enter the battery 11, wherein the OVP protection circuit 22 is used to detect whether the input voltage is greater than 6V. If it is greater than 6V, The electrical connection between the main control IC 23 and the charging circuit 21 is disconnected to protect the main control IC 23; the charging management circuit 26 and the battery protection circuit 28 set the charging curve of the battery 11 and protect the battery 11 when it is over-voltage, over-current, or short-circuited. The boost circuit 24 is electrically connected to the output circuit 212. The main control IC 23, the light load detection circuit 25, the intelligent self-locking circuit 27, the switch circuit 29, and the MCU control circuit 210 are all electrically connected and controlled by the button SW12A and Q1 The connecting circuit 2B, Q2 connecting circuit 2C and Q3 connecting circuit 2D are electrically connected. By electrically connecting the main control IC23, the light load detection circuit 25, the intelligent self-locking circuit 27, the switch circuit 29 and the MCU control circuit 210, when the button SW12A is pressed, the main control IC23 starts and sends data to the MCU control circuit 210. The MCU control circuit 210 controls the intelligent self-locking circuit 27 through the I / O port to be opened for a long time, that is, the Q1 connecting circuit 2B is turned on for a long time, and then the Q2 connecting circuit 2C and the Q3 connecting circuit 2D are turned on.When the mobile power supply body 1 detects that the light load lasts for 30S, the main control IC23 sends a shutdown signal to the MCU control circuit 210, thereby controlling the intelligent self-locking circuit 27 to disconnect, completing the operation of disconnecting the mainboard and the battery 11, and achieving intelligent switching between power and no power. This circuit greatly enhances the durability, safety and reliability of the product. After the intelligent self-locking circuit 27 is shut down with a light load, the static current of the product is reduced to zero current, and after restarting, the power display has a memory function, that is, the display is consistent with that before shutdown. The LED display circuit 211 is electrically connected to the MCU control circuit 210 and is provided with an LED indicator 2111. Four LED indicator lights 2111 are set, each LED indicator light 2111 corresponds to 25% of the indicated power, and the LED indicator lights 2111 are all on when fully charged. The output circuit 212 is provided with a USB-A port output circuit 2121 and a TYPC-C port output circuit 2122. The USB-A port output circuit 2121 and the TYPC-C port output circuit 2122 constitute the output circuit 212 as a whole.

[0024] In summary, the present invention provides a mobile power supply with an intelligent self-locking power-off function, including a mobile power supply body 1 and a control circuit 2. The control circuit 2 is arranged inside the mobile power supply body 1 and is electrically connected to an OVP protection circuit 22 and a charging circuit 21 through a charging management circuit 26. When the adapter is inserted into the USB connection plug 12 of the mobile power supply body 1 through a wire, the voltage and current pass through the OVP protection circuit 22 and then enter the charging management circuit 26 part of the main control IC 23, and then pass through the battery protection circuit 28 to enter the battery 11, wherein the OVP protection circuit 22 is used to detect whether the input voltage is greater than 6V, and if it is greater than 6V, the main control IC 23 is disconnected from the charging circuit 21. The electrical connection between the main control IC 23 plays a role in protecting the main control IC 23; the charging management circuit 26 and the battery protection circuit 28 set the charging curve of the battery 11 and protect the battery 11 when it is over-voltage, over-current, or short-circuited; by electrically connecting the main control IC 23, the light load detection circuit 25, the intelligent self-locking circuit 27, the switch circuit 29, and the MCU control circuit 210, when the button SW12A is pressed, the main control IC 23 starts and sends data to the MCU control circuit 210. The MCU control circuit 210 controls the intelligent self-locking circuit 27 to be long-term open through the I / O port, that is, long-term conduction of Q1 connecting circuit 2B, and then conduction of Q2 connecting circuit 2C and Q3 connecting circuit 2D. When the mobile power supply body 1 detects that the light load lasts for 30S, the main control IC 23 sends a shutdown signal to the MCU control circuit 210, thereby controlling the intelligent self-locking circuit 27 to disconnect, completing the operation of disconnecting the main board from the battery 11, and achieving intelligent switching between power and no power. This circuit greatly enhances the durability, safety, and reliability of the product.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile power source with an intelligent self-locking power-off function, comprising a mobile power source body (1) and a control circuit (2), wherein the control circuit (2) is arranged inside the mobile power source body (1), and is characterized in that: The mobile power source body (1) is provided with a battery (11), a USB connection plug (12) and a power switch (13); the battery (11) is arranged inside the mobile power source body (1), and the USB connection plug (12) and the power switch (13) are both arranged at one end of the mobile power source body (1); The control circuit (2) comprises a charging circuit (21), an OVP protection circuit (22), a main control IC (23), a boost circuit (24), a light load detection circuit (25), a charging management circuit (26), an intelligent self-locking circuit (27), a battery protection circuit (28), a switch circuit (29), an MCU control circuit (210), an LED display circuit (211) and an output circuit (212); the charging management circuit (26) is electrically connected to the OVP protection circuit (22) and the charging circuit (21); the boost circuit (24) is electrically connected to the output circuit (212); the main control IC (23), the light load detection circuit (25), the intelligent self-locking circuit (27), the switch circuit (29) and the MCU control circuit (210) are all electrically connected and controlled by a key SW1 (2A) and connected via Q1. The Q2 connection circuit (2B), the Q2 connection circuit (2C) and the Q3 connection circuit (2D) are electrically connected; the main control IC (23) is provided with an overvoltage and overcurrent detection circuit (231); the overvoltage and overcurrent detection circuit (231) is integrated in the main control IC (23); and the overvoltage and overcurrent detection circuit (231) is electrically connected to the MCU control circuit (210); after the intelligent self-locking circuit (27) is shut down under light load, the static current of the product is reduced to zero current, and after restarting, the power display has a memory function, that is, the display is consistent with that before shutdown; the output circuit (212) is provided with a USB-A port output circuit (2121) and a TYPC-C port output circuit (2122); the USB-A port output circuit (2121) and the TYPC-C port output circuit (2122) constitute the output circuit (212) as a whole.

2. A mobile power source with intelligent self-locking power-off function according to claim 1, characterized in that: The battery (11) is a lithium battery.

3. A mobile power source with intelligent self-locking power-off function according to claim 1, characterized in that: The LED display circuit (211) is electrically connected to the MCU control circuit (210) and is provided with an LED indicator light (2111). Four LED indicator lights (2111) are provided, each LED indicator light (2111) corresponding to 25% of the power level, and the LED indicator lights (2111) are fully lit when the power level is fully charged.

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