Portable starting power supply

Abstract

The embodiment of the utility model provides a portable starting power supply, and the power supply comprises a battery interface which is electrically connected with a power supply; the first USB interface is used for being electrically connected with first electric equipment; the buck-boost circuit comprises an input end and an output end, the input end is electrically connected with the battery interface, and the output end is electrically connected with the first USB interface; wherein the buck-boost circuit adopts a charging mode of any one of AFC / FCP / PD2.0 / PD3.0 protocols, and supplies power to the first electric equipment through the power supply. According to the technical scheme, power can be supplied to the electric equipment through the power supply, the compatibility of different equipment is improved while the charging efficiency is ensured, so that the multifunctionality of the portable starting power supply is achieved, the automobile can be helped to be started in emergency when the automobile is shut down and dropped and cannot be started, and the safety of the automobile is improved. And meanwhile, digital equipment such as mobile phones and tablet personal computers can be charged anytime and anywhere.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and in particular to a portable starting power supply. Background Art

[0002] In the busy modern society, cars have become an important means of daily travel for people. Cars can take us to work, study, and travel, making our lives more convenient. However, car stalling and breaking down can bring a lot of inconvenience to people, especially in remote places.

[0003] There are many reasons why a car stalls and breaks down, among which a dead battery is the most common reason. The battery is an important component of the car's starting system, which provides starting power for the engine. The reason for a dead battery may be long-term use without charging, long-term parking, battery aging, etc. In order to solve the problem of a car stalling and breaking down, people have developed various solutions, such as jumper wires, chargers, emergency starting power supplies, etc. However, these solutions all have certain disadvantages. Jumper wires require another car to provide power, and if it is in a remote place, it is difficult to find another car. The charger needs a power socket, and if it is in the wild, it is difficult to find a power socket. The emergency starting power supply is large in size, heavy in weight, and inconvenient to carry. It should be noted that the above content is not necessarily prior art, nor is it used to limit the scope of patent protection of this application. Utility Model Content

[0004] The embodiments of the present application provide a portable starting power supply to solve or alleviate one or more of the technical problems mentioned above.

[0005] As one aspect of an embodiment of the present application, an embodiment of the present application provides a portable starting power supply, including:

[0006] A battery interface for electrically connecting to a power source;

[0007] A first USB interface, used for electrically connecting to a first electrical device;

[0008] A buck-boost circuit, comprising an input end and an output end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the first USB interface;

[0009] The buck-boost circuit adopts any charging method of AFC / FCP / PD2.0 / PD3.0 protocols to supply power to the first electrical device through a power supply.

[0010] Optionally, an EMARK circuit is electrically connected to the first USB interface, the buck-boost circuit and the battery interface respectively;

[0011] Among them, the EMARK circuit detects the initial value of the charging current / the actual value of the charging current through the first USB interface, and transmits the detected initial value of the charging current / the actual value of the charging current to the buck-boost circuit so that the buck-boost circuit identifies the corresponding power / protocol according to the initial value of the charging current / the actual value of the charging current.

[0012] Optionally, the second USB interface is used to electrically connect to a second electrical device;

[0013] An output control circuit, comprising an input end, an output end, and a control end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the second USB interface;

[0014] A controller, electrically connected to a control end of the output control circuit;

[0015] The output control circuit adopts a charging method of the QC3.0 protocol, and supplies power to the second electrical device through a power supply under the control of the controller.

[0016] Optionally, an I2C communication circuit is electrically connected between the buck-boost circuit and the controller, and is used to read status information of the buck-boost circuit and feed it back to the controller;

[0017] QC3.0 output voltage detection circuit, electrically connected between the output end of the output control circuit and the controller, for detecting QC output voltage information and feeding back to the controller;

[0018] A battery status detection circuit, electrically connected between the battery interface and the controller, for detecting battery status information and feeding back to the controller;

[0019] The status display circuit is electrically connected to the controller and is used to display feedback information.

[0020] Optionally, an LED lighting circuit electrically connects the battery interface and the controller;

[0021] Wherein, the LED lighting circuit supplies power to the LED lamp through the power supply under the control of the controller.

[0022] Optionally, a battery protection control circuit is electrically connected to the battery interface to provide overvoltage, overcurrent, overshoot, low voltage, and short circuit protection functions.

[0023] Optionally, the voltage stabilizing circuit comprises an input end and an output end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the controller.

[0024] Optionally, a sleep circuit electrically connects the battery interface and the controller;

[0025] Wherein, the controller is also used to electrically connect to the second USB interface and detect the insertion status information of the second USB interface;

[0026] The controller determines the device insertion state according to the state information of the buck-boost circuit and / or the insertion state information of the second USB interface; when the device insertion state is not inserted, it automatically enters a low-power sleep mode after a preset time period.

[0027] Optionally, a power button circuit is electrically connected to the controller and is used to wake up the controller that has entered a low-power sleep mode.

[0028] Optionally, a program burning port is electrically connected to the controller and is used to load a program and / or firmware into the controller to update the program and / or firmware.

[0029] The above technical solution adopted in the embodiment of the present application may have the following advantages:

[0030] The buck-boost circuit adopts any charging method of the AFC / FCP / PD2.0 / PD3.0 protocol, and supplies power to the power-consuming equipment through the power supply, ensuring the charging efficiency while improving the compatibility of different devices, thereby realizing the versatility of the portable starting power supply. It can help start the car in an emergency when the car is stalled and cannot be started. It can also charge digital devices such as mobile phones and tablets anytime and anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0032] Figure 1 It is a circuit connection diagram of a portable starting power supply provided in an embodiment of the present application.

[0033] Figure 2 It is a circuit connection diagram of the buck-boost circuit, EMARK circuit, LED lighting circuit, and output control circuit provided in the embodiment of the present application.

[0034] Figure 3 It is a circuit connection diagram of the QC3.0 output voltage detection circuit, battery status detection circuit, I2C communication circuit, status display circuit, voltage stabilization circuit, controller, sleep circuit, power button circuit, battery protection control circuit, program burning port, etc. provided in the embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] The following provides an explanation of the terms used in this application.

[0038] AFC (Adaptive Fast Charging): A fast charging protocol developed by Samsung that can provide faster charging speeds for Samsung phones.

[0039] FCP (Fast Charge Protocol): A fast charging protocol developed by Xiaomi that can provide faster charging speeds for Xiaomi phones.

[0040] PD2.0 (Power Delivery 2.0): A fast charging protocol developed by the USB-IF organization that can provide faster charging speeds for most electronic devices.

[0041] PD3.0 (Power Delivery 3.0): The latest fast charging protocol developed by the USB-IF organization, which can provide faster charging speeds for most electronic devices and support multiple charging power.

[0042] QC3.0 (Quick Charge 3.0): A fast charging protocol developed by Qualcomm that can provide faster charging speeds for smartphones.

[0043] To facilitate those skilled in the art to understand the technical solutions provided in the embodiments of the present application, the relevant technologies are described below:

[0044] Buck-boost charging technology: refers to the process of using a boost or buck circuit to convert the input voltage into a voltage that matches the battery voltage during the charging process. Buck-boost charging technology can improve charging efficiency and shorten charging time.

[0045] To this end, the present application embodiment provides a portable starting power supply technical solution. The solution is briefly described as follows:

[0046] This product provides a stable 5V power supply system to the controller U5 (ML8F1618) through the linear regulator U7 (CXM7550-2), resistor R24, diode D14 / D15 (1N4148WS), and capacitor C52 / C53 (10Uf / 25V). USB1 (C port) is matched with the PD charger U2 (IP2368), which controls the NMOS tube Q1 / Q2 / Q3 / Q4 (GTMV4056A) to generate PWM oscillation and the inductor L1 (10uH), electrolytic capacitor EC1 (470uF / 25V), SMD electrolytic capacitor C5 (470uF / 25V) and other devices to form a buck-boost module circuit, which supports AFC / FCP / PD2.0 / PD3.0 and other input and output (PD100W) fast charging protocols. When the PD output is greater than 6SW, it must be Connect the EMARK circuit. The EMARK circuit detects the charging current initial value CC1 / charging current actual value CC2 signal through the C port, and the linear regulator U3 (CXM7550-2) provides a 5V reference. Then, through the diode D9 (1N4148WS), PMOS tube Q8 / Q9 (GTM2301A), NMOS tube Q10 / Q11 (2N7002), the switching control is transmitted to the PD charger U2 (P2368) to identify the corresponding power / protocol (maximum 20 / 5A).

[0047] J1 is the battery interface, USB2 is the QC3.0 output port (supports 5V / 3A, 9V / 2A, 12V / 1.5A), PMOS tube Q12 controls the opening / closing of USB2 output, and the QC3.0 output module circuit is composed of capacitor C32, QC charger U4 (IP6525T), inductor L3 (22uH), ceramic capacitor C34 / C35 (22UF / 25V), electrolytic capacitor C36 (100uF / 25V), detection resistor R55 (30 milliohms) and other devices.

[0048] The 3W flashlight module circuit is composed of resistor R18, resistor R19, diode D5 (SS34), inductor L2 (68uH), LED driver U1 (PT4115), and LED. The PMOS tube Q6 / NMOS tube Q7 regulates and controls the on and off of the LED flashlight to realize SOS and other functions.

[0049] Through the battery interface J1, lithium battery protector U6 (CM1041-DS / DT), NMOS tube Q18 / Q19 (GTMV30130A), resistor R72 (5mR / 2512 / 1% 2W), and other devices, a 4-series lithium battery protection module circuit is formed to realize overvoltage, overcurrent, overcharge, low voltage, short circuit and other protection functions.

[0050] The QC output voltage is detected by detecting the resistor R39 and the resistor R37 voltage division through the controller U5-19 (QCV), and the battery voltage is detected by detecting the resistor R41 and the resistor R38 voltage division through the controller U5-15 (BATV). The battery temperature is detected by the resistor R56, the thermistor NTC, and the controller U5-16 (NTC). The status of the PD charger U2 (IP2368) (PD output power, battery power, short circuit abnormality, and setting of battery string number, battery full voltage, battery input and output power, etc.) is read through the controller U5-7 (I2C_INT), the controller U5-8 (MCU_SDA), the controller U5-9 (MCU_SCL), and I2C communication, so that the corresponding status is displayed through the digital tube D13.

[0051] When the device is connected, the output is turned on (normally open state, there is no discharge over-temperature, over-current protection, controller U5 enters sleep mode, self-power consumption is less than 200uA), when the controller U5-18 (I-USB) detects that the output current of USB2 port is less than 0.1A through resistor R55, or the device is not detected through USB1, PD charger U2 (charging current initial value CC1 / charging current actual value CC2 protocol, etc.), the system automatically enters low-power sleep mode after 30 seconds. Press button SW1 to wake up again, check the power, turn on the output, and turn on the flashlight.

[0052] The basic principle of automobile starting power supply: using chemical energy to convert into electrical energy, and then converting electrical energy into mechanical energy, so as to start the car. Specifically, the automobile starting power supply mainly converts chemical energy into electrical energy through the battery, and then converts electrical energy into mechanical energy through the starter motor, so as to start the engine.

[0053] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0054] like Figures 1 to 3 As shown, the portable starting power supply may include:

[0055] Battery interface, used for electrical connection to a power source.

[0056] The first USB interface is used to electrically connect to a first electrical device.

[0057] The buck-boost circuit comprises an input end and an output end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the first USB interface.

[0058] The buck-boost circuit adopts a charging method of the AFC / FCP / PD2.0 / PD3.0 protocol to supply power to the first electrical device through a power supply.

[0059] In this embodiment, the portable starting power supply can be used to help start the car in an emergency when the car is stalled and cannot be started. It can also charge digital devices such as mobile phones and tablets anytime and anywhere. The basic principle of the car starting power supply: use chemical energy to convert into electrical energy, and then convert the electrical energy into mechanical energy to start the car. Specifically, the car starting power supply mainly converts chemical energy into electrical energy through the device of the battery, and then converts the electrical energy into mechanical energy through the starter motor, thereby driving the engine to start. The electrical energy is input from the battery interface, and then output to the car or other electrical equipment by the buck-boost circuit and USB1, where the buck-boost circuit supports multiple protocols.

[0060] It can be seen that the buck-boost circuit adopts any charging method of the AFC / FCP / PD2.0 / PD3.0 protocol to supply power to the electrical equipment through the power supply, ensuring the charging efficiency while improving the compatibility of different devices, thereby realizing the versatility of the portable starting power supply. It can help start the car in an emergency when the car is stalled and cannot be started, avoiding the inconvenience and danger of being trapped in a vehicle that cannot be started. At the same time, it can also charge digital devices such as mobile phones and tablets anytime and anywhere.

[0061] In an optional embodiment, the buck-boost circuit includes: PD charger U2, resistor R2, resistor R4, resistor R5, resistor R6, resistor R9, resistor R10, resistor R11, resistor R13, resistor R27, capacitor C1, capacitor C2, capacitor C3, capacitor C6, capacitor C7, capacitor C8, capacitor C13, capacitor C14, capacitor C15, capacitor C17, capacitor C19, capacitor C20, capacitor C29, chip electrolytic capacitor C5, electrolytic capacitor EC1, diode D1, diode D2, diode D3, diode D4, NMOS tube Q1, NMOS tube Q2, NMOS tube Q3, NMOS tube Q4, NMOS tube Q5, and inductor L1.

[0062] Among them, the battery positive pin of the battery interface J1 is connected to the battery pin of the PD charger U2; the battery pin of the PD charger U2 is connected in parallel to the chip electrolytic capacitor C5, capacitor C1, capacitor C2, capacitor C3 and analog ground; one way is connected to the drain of the NMOS tube Q1 through the resistor R2 voltage divider, the gate of the NMOS tube Q1 is connected to the source of the NMOS tube Q1 through the capacitor C6, and the gate of the NMOS tube Q1 is also connected in parallel with the diode D2 and the resistor R5 to the high level output 2 pin of the PD charger U2, NMOS The source of OS tube Q1 is also connected to the drain of NMOS tube Q2. The gate of NMOS tube Q2 is connected to the source of NMOS tube Q2 and analog ground through capacitor C7. The gate of NMOS tube Q2 is also connected to the low level output 2 pin of PD charger U2 in parallel with diode D1 and resistor R4. The drain of NMOS tube Q1 is connected to the drain of NMOS tube Q2 through resistor R6 and capacitor C8. The gate of NMOS tube Q5 is connected to the power ground pin of PD charger. The source of NMOS tube Q5 is connected to N through resistor R27. The drain of MOS tube Q5 is connected to analog ground through capacitor C29; the drain of NMOS tube Q5 is connected to analog ground in parallel with capacitor C17, capacitor C19, capacitor C20, and electrolytic capacitor EC1; the drain of NMOS tube Q4 is connected to the drain of NMOS tube Q4 through resistor R13 for voltage division, and the gate of NMOS tube Q4 is connected to the source of NMOS tube Q4 through capacitor C14. The gate of NMOS tube Q4 is also connected to the high level output 1 pin of PD charger U2 in parallel with diode D3 and resistor R10, and the source of NMOS tube Q4 The drain of NMOS tube Q3 is also connected, the gate of NMOS tube Q3 is connected to the source of NMOS tube Q3 and analog ground through capacitor C15, the gate of NMOS tube Q3 is also connected in parallel with diode D4 and resistor R11 to connect to the low level output 1 pin of PD charger U2, the drain of NMOS tube Q4 is connected to the drain of NMOS tube Q3 through resistor R9 and capacitor C13; the drain of NMOS tube Q2 is connected to the drain of NMOS tube Q3 through inductor L1; the source of NMOS tube Q5 is connected to the power pin of USB1.

[0063] In this embodiment, USB1 (C port) is matched with PD charger U2 (IP2368) to control NMOS tube Q1 / Q2 / Q3 / Q4 (GTMV4056A) to generate PWM oscillation and inductor L1 (10uH) electrolytic capacitor EC1 (470uF / 25V), chip electrolytic capacitor C5 (470uF / 25V) and other devices to form a buck-boost module circuit, which supports any input and output (PD100W) fast charging protocol among AFC / FCP / PD2.0 / PD3.0.

[0064] It can be seen that the buck-boost circuit adopts any charging method of the AFC / FCP / PD2.0 / PD3.0 protocol to supply power to the electrical equipment through the power supply, ensuring the charging efficiency while improving the compatibility of different devices, thereby realizing the versatility of the portable starting power supply. It can help start the car in an emergency when the car is stalled and cannot be started, avoiding the inconvenience and danger of being trapped in a vehicle that cannot be started. At the same time, it can also charge digital devices such as mobile phones and tablets anytime and anywhere.

[0065] In an optional embodiment, an EMARK circuit is electrically connected to the first USB interface, the buck-boost circuit and the battery interface respectively.

[0066] Among them, the EMARK circuit detects the initial value of the charging current / the actual value of the charging current through the first USB interface, and transmits the detected initial value of the charging current / the actual value of the charging current to the buck-boost circuit so that the buck-boost circuit identifies the corresponding power / protocol according to the initial value of the charging current / the actual value of the charging current.

[0067] In this embodiment, the EMARK circuit outputs the CC1 / CC2 signal detected from USB1 to the buck-boost circuit, and the buck-boost circuit identifies the corresponding power / protocol according to the CC1 / CC2 signal.

[0068] It can be seen that the EMARK circuit can identify the corresponding power / protocol based on the initial value of the charging current / the actual value of the charging current, thereby providing the device with the appropriate charging power, reducing energy loss during the charging process, improving charging efficiency, shortening charging time, and improving user experience. Traditional charging protocols require complex communication between the device and the charger to determine the charging power and protocol. The EMARK circuit can simplify the charging protocol and reduce the cost of the device and charger by detecting the charging current. The EMARK circuit can provide support for multi-protocol charging by identifying the actual value of the charging current, thereby meeting the charging needs of different devices.

[0069] In an optional embodiment, the EMARK circuit includes: PMOS tube Q8, PMOS tube Q9, NMOS tube Q10, NMOS tube Q11, resistor R24, resistor R25, resistor R28, resistor R29, resistor R30, resistor R31, capacitor C27, capacitor C28, capacitor C39, capacitor C40, linear regulator U3, and diode D9.

[0070] Among them, the battery positive pin of the battery interface J1 is connected to the power input pin of the linear regulator U3 through the resistor R25, and the power input pin of the linear regulator U3 is connected to the power ground pin of the linear regulator U3 through the capacitor C28 to the analog ground; the output voltage pin of the linear regulator U3 is connected to the analog ground through the capacitor C27, and is positively connected to the diode D9 through the resistor R24; the cathode of the diode D9 is connected to the source of the PMOS tube Q8, and the source of the PMOS tube Q8 is also connected to the gate of the PMOS tube Q8 through the resistor R28, and the gate of the PMOS tube Q8 is connected to the drain of the NMOS tube Q11, and the gate of the NMOS tube Q11 is connected in parallel with the resistor R31 and the capacitor C39 to connect to the NMOS tube Q1 The source of NMOS tube Q1 is connected to the analog ground, the gate of NMOS tube Q11 is connected to the charging status indicator pin of the PD charger, the drain of PMOS tube Q8 is connected to the charging current initial value (CC1) pin of USB1, and the source of PMOS tube Q9 is connected to the gate of PMOS tube Q9 through resistor R29. The gate of PMOS tube Q9 is connected to the drain of NMOS tube Q10. The gate of NMOS tube Q10 is connected to the source of NMOS tube Q10 in parallel with resistor R30 and capacitor C40, and the gate of NMOS tube Q10 is connected to the analog ground. The gate of NMOS tube Q10 is connected to the data processing pin of the PD charger, and the drain of PMOS tube Q9 is connected to the charging current actual value (CC2) pin of USB1.

[0071] In this embodiment, when the PD output is greater than 6SW, the EMARK circuit must be connected. The EMARK circuit: detects the charging current initial value CC1 / charging current actual value CC2 signal through the C port, and the linear regulator U3 (CXM7550-2) provides a 5V reference, and then through the diode D9 (1N4148WS), PMOS tube Q8 / Q9 (GTM2301A), NMOS tube Q10 / Q11 (2N7002), the switching control is transmitted to the PD charger U2 (P2368), and the corresponding power / protocol (maximum 20 / 5A) is identified.

[0072] It can be seen that the EMARK circuit can identify the corresponding power / protocol based on the initial value of the charging current / the actual value of the charging current, thereby providing the device with the appropriate charging power, reducing energy loss during the charging process, improving charging efficiency, shortening charging time, and improving user experience. Traditional charging protocols require complex communication between the device and the charger to determine the charging power and protocol. The EMARK circuit can simplify the charging protocol and reduce the cost of the device and charger by detecting the charging current. The EMARK circuit can provide support for multi-protocol charging by identifying the actual value of the charging current, thereby meeting the charging needs of different devices.

[0073] In an optional embodiment, the second USB interface is used to electrically connect to a second electrical device.

[0074] The output control circuit comprises an input end, an output end and a control end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the second USB interface.

[0075] A controller is electrically connected to a control end of the output control circuit.

[0076] The output control circuit adopts a charging method of the QC3.0 protocol, and supplies power to the second electrical device through a power supply under the control of the controller.

[0077] In this embodiment, a USB port is added, which can output QC3.0 (meeting 5V / 3A, 9V / 2A, 12V / 1.5A).

[0078] From this we can see that adding a USB port can provide fast charging support for charging multiple devices at the same time, improve charging efficiency, and increase charging flexibility and convenience.

[0079] In an optional embodiment, the output control circuit includes: a PMOS tube Q12, a QC charger U4, a capacitor C34, a capacitor C35, an electrolytic capacitor C32, a chip electrolytic capacitor C36, and an inductor L3.

[0080] Among them, the positive pin of the battery interface J1 is connected to the source and drain of the PMOS tube Q12; the drain of the PMOS tube Q12 is connected to the electrolytic capacitor C32 to the analog ground, and is connected to the power input pin of the QC charger; the switch pin of the QC charger is connected to one end of the inductor L3, and the other end of the inductor L3 is connected to the parallel capacitor C34, capacitor C35, and chip electrolytic capacitor C36 to the analog ground, and is connected to the pin 1 of USB2. Pin 4 of USB2 is connected to the analog ground through the resistor R55.

[0081] In this embodiment, J1 is a battery interface, USB2 is a QC3.0 output port (supporting 5V / 3A, 9V / 2A, 12V / 1.5A), PMOS tube Q12 controls the opening / closing of USB2 output, and the QC3.0 output module circuit is composed of capacitor C32, QC charger U4 (IP6525T), inductor L3 (22uH), ceramic capacitor C34 / C35 (22UF / 25V), electrolytic capacitor C36 (100uF / 25V), detection resistor R55 (30 milliohms) and other devices.

[0082] In an optional embodiment, an I2C communication circuit is electrically connected between the buck-boost circuit and the controller, and is used to read status information of the buck-boost circuit and feed it back to the controller.

[0083] The QC3.0 output voltage detection circuit is electrically connected between the output end of the output control circuit and the controller, and is used to detect the QC output voltage information and feed it back to the controller.

[0084] The battery status detection circuit is electrically connected between the battery interface and the controller, and is used to detect the battery status information and feed it back to the controller.

[0085] The status display circuit is electrically connected to the controller and is used to display feedback information.

[0086] In this embodiment, the I2C communication circuit, the QC3.0 output voltage detection circuit, and the battery status detection circuit detect the status information, and the status display circuit displays the corresponding status.

[0087] It can be seen that through the status display circuit, users can intuitively see the status information of the charger, such as charging output power, battery power, etc. This can improve the user experience and let users better understand the operation of the charger. Through the status display circuit, the operating status of the charger can be easily viewed, which can help engineers quickly locate the problem of the charger and improve the development efficiency of the charger.

[0088] In an optional embodiment, the I2C communication circuit includes: a resistor R42, a resistor R43, a resistor R44, a resistor R45, an NMOS transistor Q15, and an NMOS transistor Q16.

[0089] Among them, the core power input pin of the PD charger is connected to the gates of the NMOS tube Q15 and the NMOS tube Q16 respectively, and is connected in parallel with resistors R43 and R45; the other end of the resistor R43 is connected to the source of the NMOS tube Q15, the other end of the resistor R45 is connected to the source of the NMOS tube Q16, the drain of the NMOS tube Q15 is connected to resistor R42, the drain of the NMOS tube Q16 is connected to resistor R44, and the other ends of the resistors R42 and R44 are connected to the output end of the linear regulator U7.

[0090] The QC3.0 output voltage detection circuit includes: resistors R37, R39, and capacitor C37.

[0091] The output end of the output control circuit is connected to resistor R39, the other end of resistor R39 is connected in parallel with resistor R37 and capacitor C37 to analog ground, and the ungrounded end of capacitor C37 is connected to the QC transmission voltage detection pin of controller U5.

[0092] The battery status detection circuit includes: a battery temperature detection circuit and a battery voltage detection circuit.

[0093] The battery temperature detection circuit includes a thermistor NTC, a capacitor C49, and a resistor R56. The sleep mode enable control pin of the controller U5 is connected to the resistor R56, the other end of the resistor R56 is connected in parallel with the thermistor NTC and the capacitor C49 to the digital ground, and the ungrounded end of the capacitor C49 is connected to the thermistor pin of the controller U5. The battery voltage detection circuit includes a resistor R38, a resistor R41, and a capacitor C38. The battery interface J1 is connected to the resistor R41, the other end of the resistor R41 is connected in parallel with the resistor R38 and the capacitor C38 to the digital ground, and the ungrounded end of the capacitor C38 is connected to the battery voltage pin of the controller U5.

[0094] The state display circuit includes: a digital tube D13, a resistor R61, a resistor R62, a resistor R63, a resistor R64, a resistor R65, and a resistor R66.

[0095] Among them, the digital tube D13 is connected to resistor R61, resistor R62, resistor R63, resistor R64, resistor R65, and resistor R66 respectively, and the other ends of resistor R61, resistor R62, resistor R63, resistor R64, resistor R65, and resistor R66 are connected to the F pin, E pin, D pin, C pin, B pin, and A pin of the controller respectively.

[0096] In this embodiment, the QC output voltage is detected by detecting the resistor R39 and the resistor R37 by the controller U5-19 (QCV), and the battery voltage is detected by detecting the resistor R41 and the resistor R38 by the controller U5-15 (BATV). The battery temperature is detected by the resistor R56, the thermistor NTC, and the controller U5-16 (NTC). The status of the PD charger U2 (IP2368) (PD output power, battery power, short circuit abnormality, and setting of the number of battery strings, battery full voltage, battery input and output power, etc.) is read through the controller U5-7 (I2C_INT), the controller U5-8 (MCU_SDA), the controller U5-9 (MCU_SCL), and the I2C communication, so that the corresponding status is displayed through the digital tube D13.

[0097] It can be seen that through the status display circuit, users can intuitively see the status information of the charger, such as charging output power, battery power, etc. This can improve the user experience and let users better understand the operation of the charger. Through the status display circuit, the operating status of the charger can be easily viewed, which can help engineers quickly locate the problem of the charger and improve the development efficiency of the charger.

[0098] In an optional embodiment, an LED lighting circuit electrically connects the battery interface and the controller.

[0099] Wherein, the LED lighting circuit supplies power to the LED lamp through the power supply under the control of the controller.

[0100] In an optional embodiment, the LED lighting circuit includes: a PMOS tube Q6, an NMOS tube Q7, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a diode D5, an inductor L2, an LED driver U1, and an LED interface.

[0101] Among them, the positive electrode of the LED interface is connected to the drain of the PMOS tube Q6 through the parallel R18 and the resistor R19, the source of the PMOS tube Q6 is connected to the gate of the PMOS tube Q6 through the resistor R17, the source of the PMOS tube Q6 is connected to the positive pin of the battery interface J1, the gate of the PMOS tube Q6 is connected to the drain of the NMOS tube Q7, the gate of the NMOS tube Q7 is connected to the source of the NMOS tube Q7 through the resistor R16 and connected to the analog ground, and the gate of the NMOS tube Q7 is connected to the LED enable pin of the controller.

[0102] In this embodiment, a 3W flashlight module circuit is composed of resistor R18, resistor R19, diode D5 (SS34), inductor L2 (68uH), LED driver U1 (PT4115), and LED. The PMOS tube Q6 / NMOS tube Q7 regulates and controls the on and off of the LED flashlight to realize functions such as flashing, SOS emergency light, and strong light illumination.

[0103] From this we can see that functions such as strobe light, SOS emergency light, and strong light lighting can meet the lighting needs of different scenes and improve the flexibility of flashlight use.

[0104] In an optional embodiment, a battery protection control circuit is electrically connected to the battery interface to provide overvoltage, overcurrent, overshoot, low voltage, and short circuit protection functions.

[0105] In an optional embodiment, the battery protection control circuit includes: a lithium battery protector U6, a battery interface J1, an NMOS tube Q18, an NMOS tube Q19, and a resistor R72.

[0106] Among them, the battery positive pin of the electrical interface J1 is connected to the power input pin of the lithium battery protector U6, the battery negative pin of the electrical interface J1 is connected to the source of the NMOS tube Q19 through the resistor R72, the drain of the NMOS tube Q19 is connected to the drain of the NMOS tube Q18, and the source of the NMOS tube Q18 is connected to the analog ground.

[0107] In this embodiment, a 4-series lithium battery protection module circuit is formed through battery interface J1, lithium battery protector U6 (CM1041-DS / DT), NMOS tube Q18 / Q19 (GTMV30130A), resistor R72 (5mR / 2512 / 1% 2W), and other devices to achieve overvoltage, overcurrent, overcharge, low voltage, short circuit and other protection functions.

[0108] From this we can see that overvoltage, overcurrent, overcharge, low voltage, short circuit and other protection functions can prevent lithium batteries from overheating, burning, explosion and other dangerous situations, improve the safety of lithium batteries, extend the service life of lithium batteries, prevent lithium batteries from overcharging and over-discharging, and improve the use efficiency of lithium batteries.

[0109] In an optional embodiment, the voltage stabilizing circuit includes an input end and an output end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the controller.

[0110] In an optional embodiment, the voltage stabilizing circuit includes: a diode D15, a resistor R26, a linear regulator U7, a capacitor C51, a capacitor C52, a capacitor C53, and an electrolytic capacitor C50.

[0111] Among them, the positive pin of the battery interface J1 is connected to the resistor R26 through the positive connection diode D15, the other end of the resistor R26 is connected to the input pin of the linear regulator U7, the input pin of the linear regulator U7 is connected to the ground pin of the linear regulator U7 through the capacitor C53 and connected to the digital ground, and the output pin of the linear regulator U7 is connected to the ground pin of the linear regulator U7 through the parallel capacitor C51, the capacitor C52, and the electrolytic capacitor C50.

[0112] In this embodiment, a stable 5V power supply system is provided to the controller U5 (ML8F1618) through a linear regulator U7 (CXM7550-2), a resistor R24, a diode D14 / D15 (1N4148WS), and a capacitor C52 / C53 (10Uf / 25V).

[0113] It can be seen that the linear regulator can stabilize the input voltage to the set value, and even if the input voltage fluctuates, the output voltage will remain stable, thereby improving the stability of the controller U5 and preventing the controller U5 from working abnormally.

[0114] In an optional embodiment, a sleep circuit is electrically connected to the battery interface and the controller.

[0115] The controller is also used to electrically connect to the second USB interface and detect the insertion status information of the second USB interface.

[0116] The controller determines the device insertion state according to the state information of the buck-boost circuit and / or the insertion state information of the second USB interface; when the device insertion state is not inserted, it automatically enters a low-power sleep mode after a preset time period.

[0117] In an optional embodiment, the sleep circuit includes: a PMOS tube Q14, an NPN transistor, a resistor R57, a resistor R58, a resistor R59, and a resistor R60.

[0118] Among them, the battery interface is connected to the source and drain of the PMOS tube Q14, the source of the PMOS tube Q14 is connected to the gate of the PMOS tube Q14 through the resistor R58, the gate of the PMOS tube Q14 is connected to the collector of the NPN transistor, the base of the NPN transistor is connected to the emitter of the NPN transistor through the resistor R59 and connected to the analog ground, and the base of the NPN transistor is connected to the sleep mode enable control pin of the controller U5 through the resistor R57.

[0119] In this embodiment, when the device is connected, the output is turned on (normally open state, there is no discharge overtemperature, overcurrent protection, the controller U5 enters sleep mode, and the self-power consumption is less than 200uA). When the controller U5-18 (I-USB) detects through resistor R55 that the output current of the USB2 port is less than 0.1A, or through USB1, the PD charger U2 (charging current initial value CC1 / charging current actual value CC2 protocol, etc. detection) does not detect that the device is inserted, the system automatically enters low-power sleep mode after 30 seconds.

[0120] It can be seen that when the output current is less than 0.1A, or when the device is not plugged in, the system enters low-power sleep mode, which can effectively save power and reduce heat. When the system enters low-power sleep mode, the operating voltage and current will be reduced, which can extend the battery life.

[0121] In an optional embodiment, the power button circuit is electrically connected to the controller and is used to wake up the controller that has entered a low-power sleep mode.

[0122] In an optional embodiment, the power button circuit includes: a resistor R40 and a patch button SW1.

[0123] The key pin of the controller U5 is connected to the resistor R40, and the other end of the resistor R40 is connected to SW1 and the analog ground.

[0124] In this embodiment, the button SW1 can be used to wake up again, check the power level, turn on the output, and turn on the flashlight.

[0125] It can be seen that the user can quickly wake up the charger by pressing the SW1 button, and perform operations such as checking the power level, turning on the output, and turning on the flashlight, which improves the user experience. The user only needs to press the SW1 button to complete a variety of operations, which simplifies the operation steps. Operating by pressing the SW1 button can prevent the charger from accidentally starting or shutting down without user authorization, which improves safety.

[0126] In an optional embodiment, a program burning port is electrically connected to the controller and is used to load a program and / or firmware into the controller to update the program and / or firmware.

[0127] It can be seen that the functionality, reliability and user experience of the startup power supply can be improved through the program burning port of this embodiment.

[0128] Preferably, in order to achieve a better implementation effect of the circuit, the present application also uses the following components:

[0129] like Figure 2 As shown, the buck-boost circuit also includes: a diode D8, a diode D10, a Zener diode D6, a Zener diode D7, a resistor RB1, a resistor RP1, a resistor RV1, a resistor RT1, a resistor R1, a resistor R3, a resistor R7, a resistor R8, a resistor R12, a resistor R14, a resistor R15, a resistor R21, a resistor R22, a resistor R23, a capacitor CT1, a capacitor C4, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C16, a capacitor C21, a capacitor C23, a capacitor C24, a capacitor C25, and a capacitor C26; the LED lighting circuit also includes: a capacitor C22; the output control circuit also includes: a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R46, a capacitor C30, a capacitor C31, a capacitor C33, a capacitor C48, an NPN transistor Q13, and an ESD diode D11.

[0130] like Figure 3 As shown, the portable starting power supply also includes: capacitor C41, capacitor C42; the voltage stabilizing circuit also includes: diode D14; the battery protection circuit also includes: resistor R47, resistor R48, resistor R49, resistor RT2, resistor R50, resistor R51, resistor R52, resistor R53, resistor R67, resistor R68, resistor R69, resistor R70, resistor R71, capacitor C43, capacitor C44, capacitor C45, capacitor C46, ​​capacitor C47, capacitor C54, capacitor C55, capacitor C56, diode D12, and diode D16.

[0131] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0132] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0133] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0134] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0135] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0136] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A portable starting power supply, characterized in that: include: A battery interface for electrically connecting to a power source; A first USB interface, used for electrically connecting to a first electrical device; A buck-boost circuit, comprising an input end and an output end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the first USB interface; The buck-boost circuit adopts any charging method of AFC / FCP / PD2.0 / PD3.0 protocols to supply power to the first electrical device through a power supply.

2. The portable starting power supply according to claim 1, characterized in that: Also includes: An EMARK circuit electrically connected to the first USB interface, the buck-boost circuit and the battery interface respectively; Among them, the EMARK circuit detects the initial value of the charging current / the actual value of the charging current through the first USB interface, and transmits the detected initial value of the charging current / the actual value of the charging current to the buck-boost circuit so that the buck-boost circuit identifies the corresponding power / protocol according to the initial value of the charging current / the actual value of the charging current.

3. The portable starting power supply according to claim 1, characterized in that: Also includes: A second USB interface, used for electrically connecting to a second electrical device; An output control circuit, comprising an input end, an output end, and a control end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the second USB interface; A controller, electrically connected to a control end of the output control circuit; The output control circuit adopts a charging method of the QC3.0 protocol, and supplies power to the second electrical device through a power supply under the control of the controller.

4. The portable starting power supply according to claim 3, characterized in that: Also includes: An I2C communication circuit is electrically connected between the buck-boost circuit and the controller, and is used to read the state information of the buck-boost circuit and feed it back to the controller; QC3.0 output voltage detection circuit, electrically connected between the output end of the output control circuit and the controller, for detecting QC output voltage information and feeding back to the controller; A battery status detection circuit, electrically connected between the battery interface and the controller, for detecting battery status information and feeding back to the controller; The status display circuit is electrically connected to the controller and is used to display feedback information.

5. The portable starting power supply according to claim 3, characterized in that: Also includes: An LED lighting circuit electrically connected to the battery interface and the controller; Wherein, the LED lighting circuit supplies power to the LED lamp through the power supply under the control of the controller.

6. The portable starting power supply according to claim 1, characterized in that: Also includes: The battery protection control circuit is electrically connected to the battery interface and is used to provide overvoltage, overcurrent, overcharge, low voltage and short circuit protection functions.

7. The portable starting power supply according to claim 3, characterized in that: Also includes: The voltage stabilizing circuit comprises an input end and an output end, wherein the input end is electrically connected to the battery interface, and the output end is electrically connected to the controller.

8. The portable starting power supply according to claim 3, characterized in that: Also includes: A sleep circuit electrically connected to the battery interface and the controller; Wherein, the controller is also used to electrically connect to the second USB interface and detect the insertion status information of the second USB interface; The controller determines the device insertion state according to the state information of the buck-boost circuit and / or the insertion state information of the second USB interface; when the device insertion state is not inserted, it automatically enters a low-power sleep mode after a preset time period.

9. The portable starting power supply according to claim 8, characterized in that: Also includes: The power button circuit is electrically connected to the controller and is used to wake up the controller that has entered a low-power sleep mode.

10. The portable starting power supply according to claim 3, characterized in that: Also includes: The program burning port is electrically connected to the controller and is used to load the program and / or firmware into the controller to update the program and / or firmware.

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