Multifunctional power bank circuit

Abstract

The utility model discloses a multifunctional power bank circuit, which comprises a multi-protocol power supply module, a multi-protocol discharge module, a flashlight module and a master control module, the power supply output end of the multi-protocol power supply module is connected with the power supply input end of the multi-protocol discharge module, and the power supply output end of the multi-protocol power supply module outputs power. A data communication end of the multi-protocol power supply module is connected with a data communication end of the main control module, and a signal output end of the main control module is connected with a signal input end of the flashlight module, so that the flashlight module executes corresponding strong and weak light control operation and explosion flash operation. The power bank not only can provide charging service for equipment with different charging protocols, but also can carry out charging through charging ports with different protocols, so that the applicability is improved; and a flashlight function mode is set, so that a charging function is met, multiple illumination modes can be provided in a dark environment, and the functionality and practicability of the power bank are improved.

Description

Technical Field

[0001] This utility model relates to the field of power bank technology, and in particular to a multifunctional power bank circuit. Background Technology

[0002] A power bank, also known as a portable charger or travel charger, is a portable charger that integrates power supply and charging functions, allowing you to charge mobile phones, tablets, and other digital devices anytime, anywhere. With the arrival of the 5G era, live video streaming, video calls, and high-definition online games will greatly test the charging and discharging capabilities of mobile phone batteries and power banks.

[0003] With the widespread use of power banks, different people have different requirements for additional functions. However, existing power banks have limited functions and cannot meet people's increasingly diverse needs. For example, due to the variety of types of mobile phones and other digital devices, each device uses a different charging protocol. This makes it difficult for power banks to provide fast charging for every device, meaning that power banks cannot provide charging services for devices with different charging protocols. Utility Model Content

[0004] To address the problem that current power banks have limited functionality and cannot provide charging services for devices with different charging protocols, this application provides a multi-functional power bank circuit.

[0005] A multi-functional power bank circuit includes a multi-protocol power module, a multi-protocol discharge module, a flashlight module, and a main control module;

[0006] The multi-protocol power module is equipped with a charging port that supports multiple communication protocols. The power output terminal of the multi-protocol power module is connected to the power input terminal of the multi-protocol discharge module. The power output terminal of the multi-protocol power module outputs power to supply power to external devices with corresponding communication protocols and to supply power to the flashlight module.

[0007] The data communication terminal of the multi-protocol power module is connected to the data communication terminal of the main control module, and the signal output terminal of the main control module is connected to the signal input terminal of the flashlight module, so that the flashlight module can perform corresponding intensity and light control operations and strobe operations.

[0008] By adopting the above technical solution, the multi-protocol power module supports charging ports with multiple communication protocols, enabling it to charge and discharge different types of external devices. This improves the applicability and flexibility of the power bank, meeting the power supply needs of various devices. Simultaneously, the power module's output terminal not only provides power for charging external devices but also powers the flashlight module, further expanding the power bank's functionality and offering multi-purpose convenience.

[0009] Preferably, the flashlight module includes a switch conduction unit, a high / low light control unit, and a strobe control unit;

[0010] The power output terminal of the multi-protocol discharge module is connected to the power input terminal of the switch conduction unit, and the power output terminal of the switch conduction unit is connected to the power input terminal of the strong and weak light control unit and the power input terminal of the strobe control unit, respectively.

[0011] The switch signal output terminal of the main control module is connected to the enable signal input terminal of the switch conduction unit, the first switching signal output terminal of the main control module is connected to the enable signal input terminal of the strong and weak light control unit, and the second switching signal output terminal of the main control module is connected to the enable signal input terminal of the strobe control unit.

[0012] The intensity and weakness light control unit performs the corresponding intensity and weakness light control operation according to the first switching signal output by the first switching signal output terminal of the main control module.

[0013] The strobe control unit executes the corresponding strobe control operation according to the second switching signal output by the second switching signal output terminal of the main control module.

[0014] By adopting the above technical solution, the flashlight module design includes a switch conduction unit, a high / low light control unit, and a strobe control unit. It can achieve high / low light control and strobe operation based on the signal output of the main control module, enhancing the functionality of the flashlight module. Users can flexibly adjust the light intensity and perform strobe operation according to actual needs, providing a wider range of lighting application scenarios. This design improves the versatility of the flashlight module, making it more practical in outdoor, emergency rescue, and other scenarios.

[0015] Preferably, the switch-on unit includes a switch-on element Q3, a transistor Q6, resistors R29, R30, and R31, and a capacitor C29. The power output terminal of the multi-protocol discharge module is connected to the first conducting terminal of the switch-on element Q3. The power output terminal of the multi-protocol discharge module is connected to the first terminal of resistor R29. The second terminal of resistor R29 is connected to the first terminal of resistor R30. The common node of the second terminal of resistor R29 and the first terminal of resistor R30 is connected to the controlled terminal of the switch-on element Q3. The second terminal of resistor R30 is connected to the collector of transistor Q6. Resistor R31 is connected between the switch signal output terminal of the main control module and the base of transistor Q6. The second conducting terminal of the switch-on element Q3 is connected to the power input terminal of the strong / weak light control unit and the power input terminal of the strobe control unit, respectively.

[0016] By adopting the above technical solution, the switch-on unit, through the cooperation of multiple electrical components (such as Q3, Q6, R29, R30, etc.), can effectively regulate and transmit control signals, ensuring the power supply and signal stability of the high and low light control unit and the strobe control unit. This design further ensures the effective utilization of power and the stable operation of the flashlight module, optimizes the power management system, and improves the flashlight's operational response speed and efficiency.

[0017] Preferably, the strong / weak light control unit includes a DC-DC converter chip U2, an inductor L2, a diode D1, resistors R3, R4, and R13, and an array display unit. The power output terminal of the switch-on unit is connected to the power input terminal of the DC-DC converter chip U2. The first switching signal output terminal of the main control module is connected to the controlled signal input terminal of the DC-DC converter chip U2. The power input terminal of the DC-DC converter chip U2 is connected to the signal switching terminal of the DC-DC converter chip U2. The inductor L2 is present. The signal switching terminal of the DC-DC converter chip U2 is connected to the positive terminal of the diode D1. The negative terminal of the diode D1 is connected to the signal output terminal of the DC-DC converter chip U2. The signal output terminal of the DC-DC converter chip U2 is connected to the signal input terminal of the array display unit. The resistor R3 is connected between the signal output terminal of the array display unit and ground. The resistor R4 is connected between the signal output terminal of the array display unit and the voltage feedback terminal of the DC-DC converter chip U2.

[0018] By adopting the above technical solution, the DC-DC conversion chip U2 in the strong and weak light control unit can achieve efficient power conversion, and the light source intensity can be adjusted through components such as inductor L2, diode D1, and resistor R3, ensuring stable output of the flashlight under different brightness conditions. At the same time, the design of the array display unit can achieve clear light source indication, further enhancing the user's ease of operation in nighttime or low-light environments, and improving the visibility and safety of the device.

[0019] Preferably, the array display unit includes multiple parallel indicator light columns, and each indicator light column includes multiple light-emitting diodes connected in series.

[0020] By adopting the above technical solution, the array display unit provides a clear light source display through multiple parallel indicator light columns, which can present different brightness levels of the indicator lights according to user needs, effectively improving visibility and intuitiveness during operation. At the same time, the indicator light column design makes the flashlight module more energy-efficient during use, achieving longer illumination through intelligent brightness adjustment and extending battery life.

[0021] Preferably, the strobe control unit includes a DC-DC converter chip U4, an inductor L3, a diode D2, a light-emitting diode LED46, resistors R18, R19, R20, and R22. The power output terminal of the switch-on unit is connected to the power input terminal of the DC-DC converter chip U4. The second switching signal output terminal of the main control module is connected to the controlled signal input terminal of the DC-DC converter chip U4. A connection is made between the power input terminal of the DC-DC converter chip U4 and the signal switching terminal of the DC-DC converter chip U4. Inductor L3, the signal switching terminal of the DC-DC converter chip U4 is connected to the positive terminal of diode D2, the negative terminal of diode D2 is connected to the signal output terminal of the DC-DC converter chip U4, a resistor R22 is connected between the signal output terminal of the DC-DC converter chip U4 and the positive terminal of the light-emitting diode LED46, a resistor R18 is connected between the negative terminal of the light-emitting diode LED46 and ground, and a resistor R19 is connected between the negative terminal of the light-emitting diode LED46 and the voltage feedback terminal of the DC-DC converter chip U4.

[0022] By adopting the above technical solution, the strobe control unit, through the power conversion of the DC-DC conversion chip U4, can achieve precise strobe control of the light source according to the control signal of the main control module. With the design of components such as inductor L3 and diode D2, the strobe effect is more obvious, providing a high-intensity flash signal in emergency situations, improving the recognition and visibility of the flashlight in special scenarios such as emergency rescue, and enhancing the emergency function of the product.

[0023] Preferably, the multi-protocol discharge module includes switching elements Q1, Q2, Q4, and Q5, an inductor L7, an RC filter unit, resistors R10, R11, R12, R14, FB1, FB2, FB3, FB5, a MICRO discharge port, a USB1 discharge port, a USB2 discharge port, and a USBC discharge port. The power output terminal of the multi-protocol power module is connected to the signal input terminal of the RC filter unit, the signal output terminal of the RC filter unit is connected to the signal input terminal of the inductor L7, the signal output terminal of the inductor L7 is connected to the first conducting terminal of the switching element Q1, the controlled terminal of the switching element Q1 is connected to the first signal control terminal of the multi-protocol power module, and the resistor FB1 is connected between the second conducting terminal of the switching element Q1 and the MICRO discharge port. 1. The signal output terminal of the inductor L7 is also connected to the first conducting terminal of the switching element Q5. The controlled terminal of the switching element Q5 is connected to the second signal control terminal of the multi-protocol power module. The resistor FB2 is connected between the second conducting terminal of the switching element Q5 and the USB1 discharge port. The signal output terminal of the inductor L7 is also connected to the first conducting terminal of the switching element Q2. The controlled terminal of the switching element Q2 is connected to the third signal control terminal of the multi-protocol power module. The resistor FB3 is connected between the second conducting terminal of the switching element Q2 and the USB2 discharge port. The signal output terminal of the inductor L7 is also connected to the first conducting terminal of the switching element Q4. The controlled terminal of the switching element Q4 is connected to the fourth signal control terminal of the multi-protocol power module. The resistor FB5 is connected between the second conducting terminal of the switching element Q4 and the USBC discharge port.

[0024] By adopting the above technical solution, the multi-protocol discharge module, through the cooperation of multiple switching components, can provide different voltage and current outputs according to different discharge ports, meeting the charging needs of different devices. The RC filter unit design effectively reduces power supply noise, ensures the stability of the charging process, avoids device damage caused by unstable current, and improves the safety and reliability of the power bank.

[0025] Preferably, the multi-protocol power module further includes an over-temperature detection unit. The signal input terminal of the over-temperature detection unit is used to detect the temperature of the multi-protocol power module, and the signal output terminal of the over-temperature detection unit is connected to the signal enable input terminal of the multi-protocol power module so that charging of external devices is stopped when the temperature of the multi-protocol power module is detected to be too high.

[0026] By adopting the above technical solution, the over-temperature detection unit can monitor the temperature change of the power module in real time. Once an over-temperature condition is detected, it immediately stops charging external devices via a signal enable input, thus avoiding battery damage or fire hazards caused by over-temperature. This over-temperature protection design greatly improves the safety of the power bank, ensures user safety during use, and extends the lifespan of the device.

[0027] Preferably, the over-temperature detection unit includes a resistor RT1 and a capacitor C16. The temperature detection terminal of the multi-protocol power module is connected to one end of the resistor RT1, the other end of the resistor RT1 is connected to one end of the capacitor C16, and the other end of the capacitor C16 is connected to the signal enable input terminal of the multi-protocol power module.

[0028] By adopting the above technical solution, when the temperature of the multi-protocol power module reaches a preset threshold, the resistor and capacitor configuration can effectively sense the temperature change and transmit the signal to the signal enable input terminal, thereby controlling the working state of the power module and preventing battery damage or device malfunction due to overheating. This solution effectively improves the temperature control capability of the power module, enhances the safety and stability of the power bank, protects the device from high temperatures, extends its service life, and improves the user experience.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The multi-functional power bank proposed in this utility model is designed with a multi-protocol power module, which makes it compatible with a variety of different charging protocols. It can not only provide charging services for devices with different charging protocols, but also charge through charging ports of different protocols, thus improving its applicability. At the same time, it is also equipped with a flashlight function mode, which can provide multiple lighting modes in emergency situations or dark environments in addition to fulfilling the charging function, thereby increasing the functionality and practicality of the power bank.

[0031] 2. The multi-protocol discharge module proposed in this utility model realizes charging control of different discharge ports by controlling the switching conduction element, which makes power management more precise. It can provide appropriate current and voltage according to the user's selection of different discharge ports for charging. At the same time, it can also support different fast charging protocols to meet the needs of fast charging.

[0032] 3. The flashlight module proposed in this utility model includes a switch conduction unit, a strong and weak light control unit, and a strobe control unit, which allows users to switch different lighting modes according to actual usage scenarios, further increasing functionality; at the same time, the switch conduction unit controls mode switching through the switch conduction element Q3 and the transistor Q6. The fast switching speed of the switch conduction element Q3 is beneficial to the rapid transmission of control signals, and the transistor Q6 can amplify the control signals, enabling them to drive subsequent control circuits. Attached Figure Description

[0033] Figure 1 This is a structural block diagram of the present invention;

[0034] Figure 2 This is a partial circuit structure diagram of the multi-protocol discharge unit of this utility model;

[0035] Figure 3 This is a partial circuit structure diagram of the main control module of this utility model;

[0036] Figure 4 This is a partial circuit structure diagram of the switch conduction unit of this utility model;

[0037] Figure 5 This is a partial circuit structure diagram of the strong and weak light control unit of this utility model;

[0038] Figure 6 This is a partial circuit structure diagram of the strobe control unit of this utility model;

[0039] Figure 7 This is a partial circuit structure diagram of the protection unit of this utility model. Detailed Implementation

[0040] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] Specific embodiments, combined with Figures 1 to 7As shown, the technical solution of this utility model is further illustrated. A multi-functional power bank circuit includes a multi-protocol power module 100, a multi-protocol discharge module 200, a flashlight module 300, and a main control module 400. The multi-protocol power module 100 is provided with a charging port supporting multiple communication protocols. The power output terminal of the multi-protocol power module 100 is connected to the power input terminal of the multi-protocol discharge module 200. The power output terminal of the multi-protocol power module 100 outputs power to supply power to external devices with corresponding communication protocols and to supply power to the flashlight module 300. The data communication terminal of the multi-protocol power module 100 is connected to the data communication terminal of the main control module 400. The signal output terminal of the main control module 400 is connected to the signal input terminal of the flashlight module 300, so that the flashlight module 300 can perform corresponding intensity and light control operations and strobe operations. This multi-functional power bank features a multi-protocol power module design, making it compatible with various charging protocols. It can not only provide charging services for devices with different charging protocols, but also charge devices through charging ports with different protocols, thus improving its applicability. In addition, it also has a flashlight function mode, which, in addition to its charging function, can provide multiple lighting modes in emergency situations or dark environments, increasing the power bank's functionality and practicality.

[0042] Furthermore, as a preferred embodiment of this solution and not a limitation, the flashlight module 300 includes a switch-on unit, a high / low light control unit, and a strobe control unit. The power output terminal of the multi-protocol discharge module is connected to the power input terminal of the switch-on unit. The power output terminal of the switch-on unit is connected to both the power input terminal of the high / low light control unit and the power input terminal of the strobe control unit. The switch signal output terminal of the main control module is connected to the enable signal input terminal of the switch-on unit. The first switching signal output terminal of the main control module is connected to the enable signal input terminal of the high / low light control unit. The second switching signal output terminal of the main control module is connected to the enable signal input terminal of the strobe control unit. The high / low light control unit performs a corresponding high / low light control operation based on the first switching signal output from the first switching signal output terminal of the main control module. The strobe control unit performs a corresponding strobe control operation based on the second switching signal output from the second switching signal output terminal of the main control module.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the signal output terminal of the main control module includes a switch signal output terminal, a first switching signal output terminal, and a second switching signal output terminal.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, the switch-on unit includes a switch-on element Q3, a transistor Q6, resistors R29, R30, and R31, and a capacitor C29. The power output terminal of the multi-protocol discharge module (i.e., the BAT+ pin in this embodiment) is connected to the first conducting terminal of the switch-on element Q3. The power output terminal of the multi-protocol discharge module is connected to the first terminal of resistor R29. The second terminal of resistor R29 is connected to the first terminal of resistor R30. The common node of the second terminal of resistor R29 and the first terminal of resistor R30 is connected to the controlled terminal of the switch-on element Q3. The second terminal of resistor R30 is connected to the collector of transistor Q6. Resistor R31 is connected between the switch signal output terminal of the main control module and the base of transistor Q6. The second conducting terminal of the switch-on element Q3 is connected to the power input terminal of the strong / weak light control unit and the power input terminal of the strobe control unit, respectively.

[0045] In this embodiment, the user can switch between different lighting modes according to the actual usage scenario through the switching conduction unit, which further increases the functionality; at the same time, the mode switching is controlled by the switching conduction element Q3 and the transistor Q6. The fast switching speed of the switching conduction element Q3 is conducive to the rapid transmission of control signals, and the transistor Q6 can amplify the control signals, so that they can drive the subsequent control circuit.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation, the strong / weak light control unit includes a DC-DC converter chip U2, an inductor L2, a diode D1, resistors R3, R4, and R13, and an array display unit. The power output terminal of the switch-on unit is connected to the power input terminal of the DC-DC converter chip U2 (i.e., the VIN terminal in this embodiment). The first switching signal output terminal of the main control module (i.e., the U2_PWM terminal in this embodiment) is connected to the controlled signal input terminal of the DC-DC converter chip U2 (i.e., the EN terminal in this embodiment). The power input terminal of the DC-DC converter chip U2 is connected to the DC-DC converter chip U2... The inductor L2 is connected between the signal switching terminal (i.e., the SW terminal in this embodiment) and the signal switching terminal of the DC-DC converter chip U2. The signal switching terminal of the DC-DC converter chip U2 is connected to the positive terminal of the diode D1. The negative terminal of the diode D1 is connected to the signal output terminal (i.e., the VOUT terminal in this embodiment) of the DC-DC converter chip U2. The signal output terminal of the DC-DC converter chip U2 is connected to the signal input terminal of the array display unit. The resistor R3 is connected between the signal output terminal of the array display unit and ground. The resistor R4 is connected between the signal output terminal of the array display unit and the voltage feedback terminal (i.e., the FB terminal in this embodiment) of the DC-DC converter chip U2.

[0047] The array display unit includes multiple parallel indicator light columns, each of which includes multiple series-connected light-emitting diodes.

[0048] Furthermore, as a preferred embodiment of this solution and not a limitation, the strobe control unit includes a DC-DC converter chip U4, an inductor L3, a diode D2, a light-emitting diode LED46, resistors R18, R19, R20, and R22. The power output terminal of the switch-on unit is connected to the power input terminal of the DC-DC converter chip U4 (i.e., the VIN terminal in this embodiment). The second switching signal output terminal of the main control module (i.e., the U4_PWM terminal in this embodiment) is connected to the controlled signal input terminal of the DC-DC converter chip U4 (i.e., the EN terminal in this embodiment). The power input terminal of the DC-DC converter chip U4 is connected to the signal input terminal of the DC-DC converter chip U4. The inductor L3 is connected between the switching terminal (i.e., the SW terminal in this embodiment). The signal switching terminal of the DC-DC converter chip U4 is connected to the positive terminal of the diode D2. The negative terminal of the diode D2 is connected to the signal output terminal of the DC-DC converter chip U4 (i.e., the VOUT terminal in this embodiment). The resistor R22 is connected between the signal output terminal of the DC-DC converter chip U4 and the positive terminal of the light-emitting diode LED46. The resistor R18 is connected between the negative terminal of the light-emitting diode LED46 and ground. The resistor R19 is connected between the negative terminal of the light-emitting diode LED46 and the voltage feedback terminal of the DC-DC converter chip U4 (i.e., the FB terminal in this embodiment).

[0049] In this embodiment, both the strong / weak light control unit and the strobe control unit use a DC-DC converter chip to control the brightness of the flashlight LED. Their strong / weak light signal control terminal and strobe signal control terminal are controlled by PWM signals. By adjusting the duty cycle of the PWM signal, it is helpful to accurately adjust the switching between strong / weak light and strobe functions of the flashlight. At the same time, PWM signal control can also reduce the electromagnetic interference generated by the system and ensure that the switching between flashlight modes is not interfered with.

[0050] Furthermore, as a preferred embodiment of this solution and not a limitation, both the DC-DC converter chip U2 and the DC-DC converter chip U4 are model AP3130. In specific implementations, other models may be used instead of the DC-DC converter chips U2 and U4.

[0051] In this embodiment, the DC-DC converter chip AP3130 is a constant current DC-DC converter specifically designed for driving white LEDs. The AP3130 adopts current mode and adjusts the LED current through an external current sensing resistor. The AP3130 has current limiting protection, over-temperature protection, under-voltage protection and over-voltage protection functions.

[0052] Furthermore, as a preferred embodiment of this solution and not a limitation, the main control module 400 includes a main control chip U5, the model of which is JXY-FC10LV. In specific implementations, other models of the main control chip U5 may also be used instead.

[0053] Furthermore, as a preferred embodiment of this solution and not a limitation, the multi-protocol discharge module 200 includes switching elements Q1, Q2, Q4, and Q5, an inductor L7, an RC filter unit, resistors R10, R11, R12, R14, FB1, FB2, FB3, and FB5, a MICRO discharge port, a USB1 discharge port, a USB2 discharge port, and a USBC discharge port. The power output terminal of the multi-protocol power module (i.e., this embodiment) The VOUT terminal of the embodiment is connected to the signal input terminal of the RC filter unit. The signal output terminal of the RC filter unit is connected to the signal input terminal of the inductor L7 (i.e., terminal 3 in this embodiment). The signal output terminal of the inductor L7 (i.e., terminal 4 in this embodiment) is connected to the first conducting terminal of the switch conducting element Q1. The controlled terminal of the switch conducting element Q1 is connected to the first signal control terminal of the multi-protocol power module (i.e., the GATEB terminal in this embodiment). The second conducting terminal of the switch conducting element Q1 is connected to the MICRO amplifier. The resistor FB1 is connected between the electrical ports. The signal output terminal of the inductor L7 is also connected to the first conducting terminal of the switch element Q5. The controlled terminal of the switch element Q5 is connected to the second signal control terminal (i.e., the GATEA1 terminal in this embodiment) of the multi-protocol power module. The resistor FB2 is connected between the second conducting terminal of the switch element Q5 and the USB1 discharge port. The signal output terminal of the inductor L7 is also connected to the first conducting terminal of the switch element Q2. The controlled terminal of the switch element Q2 is connected to the multi-protocol power module. The third signal control terminal of the multi-protocol power module (i.e., the GATEA2 terminal in this embodiment) is connected. The second conducting terminal of the switch conducting element Q2 is connected to the USB2 discharge port via the resistor FB3. The signal output terminal of the inductor L7 is also connected to the first conducting terminal of the switch conducting element Q4. The controlled terminal of the switch conducting element Q4 is connected to the fourth signal control terminal of the multi-protocol power module (i.e., the GATEC terminal in this embodiment). The second conducting terminal of the switch conducting element Q4 is connected to the USBC discharge port via the resistor FB5.

[0054] In this embodiment, the multi-protocol discharge module controls the charging of different discharge ports by controlling the switching elements, making power management more precise. This allows it to provide appropriate current and voltage based on the user's selection of different discharge ports for charging. It also supports different fast charging protocols to meet the needs of fast charging.

[0055] Furthermore, as a preferred embodiment of this solution and not a limitation, the multi-protocol power module 100 includes a multi-protocol power chip U3, the model of which is SW6201. In specific implementations, other models of the multi-protocol power chip U3 may also be used instead.

[0056] In this embodiment, the multi-protocol power chip SW6201 is a highly integrated multi-protocol bidirectional fast charging power bank. The SW6201 supports fast charging from any port (A+A+B+C). The SW6201 also supports multiple fast charging protocols such as PPS / PD / QC / AFC / FCP / PE / SFCP. The SW6201 also has input overvoltage protection, input overcurrent / short circuit protection, charging timeout / overvoltage protection, and overtemperature protection.

[0057] The charging process of the multi-protocol power chip SW6201 is divided into trickle mode, constant current mode, and constant voltage mode. When the battery voltage is below 3V, the multi-protocol power module is in trickle mode, and the charging current is the trickle charging current. When the battery voltage is above 3V, the multi-protocol power module enters constant current mode, and charges at full speed according to the set target current. When the battery voltage rises to the charging target voltage (e.g., 4.2V), the multi-protocol power module enters constant voltage mode, and the current gradually decreases while the battery terminal voltage remains unchanged. When the charging current decreases to the charging cutoff current, charging ends. If the battery voltage drops to 0.1V lower than the target voltage after full charging, charging will automatically restart.

[0058] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the multi-protocol power module further includes an over-temperature detection unit. The signal input terminal of the over-temperature detection unit is used to detect the temperature of the multi-protocol power module, and the signal output terminal of the over-temperature detection unit is connected to the signal enable input terminal of the multi-protocol power module so that charging of external devices is stopped when the temperature of the multi-protocol power module is detected to be too high.

[0059] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the over-temperature detection unit includes a resistor RT1 and a capacitor C16. The temperature detection terminal of the multi-protocol power module (i.e., the NTC terminal in this embodiment) is connected to one end of the resistor RT1, the other end of the resistor RT1 is connected to one end of the capacitor C16, and the other end of the capacitor C16 is connected to the signal enable input terminal of the multi-protocol power module (i.e., the VCC terminal in this embodiment).

[0060] Specifically, when the NTC interface of the multi-protocol power module detects that the temperature of the multi-protocol power module is higher than 55°C, the charging target voltage is reduced by 0.1V. If the temperature of the multi-protocol power module continues to rise and exceeds 60°C, the enable terminal of the multi-protocol power module is turned off to stop charging. After the temperature of the multi-protocol power module drops to 50°C, it automatically resumes charging, and the charging target voltage is reduced by 0.1V. When the temperature continues to drop to 45°C, the normal charging target voltage is restored.

[0061] In this embodiment, the over-temperature detection unit can monitor the temperature of the multi-protocol power module in real time. When an abnormal temperature occurs, it can promptly reduce the target charging voltage or stop charging to prevent equipment damage or burnout due to overheating.

[0062] Furthermore, as a preferred embodiment of this solution and not a limitation, the multi-protocol power module is provided with multiple charging ports for multiple communication protocols, and the multiple charging ports for the multiple communication protocols support fast charging for ports A, B and C.

[0063] Furthermore, as a preferred embodiment of this solution and not a limitation, a resistor R7 is connected between the battery capacity setting terminal (i.e., the LED5 / CSET pin in this embodiment) of the multi-protocol power module 100 and ground. The resistor R7 is selected with different resistance values ​​depending on the battery capacity setting value of the multi-protocol power module 100.

[0064] Specifically, if the battery capacity of the multi-protocol power module is 10000mAh, the resistance of resistor R7 is 20KΩ; if the battery capacity of the multi-protocol power module is 20000mAh, the resistance of resistor R7 is 36KΩ; and if the battery capacity of the multi-protocol power module is 30000mAh, the resistance of resistor R7 is 53KΩ.

[0065] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the multi-protocol power module also includes a charging indicator unit, which is used to indicate to the user that the power bank is currently working.

[0066] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging indicator unit includes resistors R5, R6, and R8, and a light-emitting diode (LED). One end of resistor R5 is connected to the button terminal (i.e., the KEY / CSET pin in this embodiment) of the multi-protocol power module, and the other end of resistor R5 is connected to resistor R8. The other end of resistor R8 is connected to the positive terminal of the LED, and the negative terminal of the LED is connected to the battery target voltage setting terminal (i.e., FLED / BSET in this embodiment) of the multi-protocol power module. Resistor R6 is connected to the common node between the battery target voltage setting terminal (i.e., FLED / BSET in this embodiment) of the multi-protocol power module and resistors R5 and R8. Resistor R6 is selected with different resistance values ​​depending on the battery target voltage setting value of the multi-protocol power module.

[0067] Specifically, if the target voltage of the multi-protocol power module battery is 4.2V, the resistance of resistor R6 is 10K; if the target voltage of the multi-protocol power module battery is 4.35V, the resistance of resistor R6 is 15K; if the target voltage of the multi-protocol power module battery is 4.4V, the resistance of resistor R6 is 5.6K; and if the target voltage of the multi-protocol power module battery is 4.5V, the resistance of resistor R6 is 3K.

[0068] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the multi-protocol power module 100 also includes a protection unit, which is used to protect the multi-protocol power module to ensure that the multi-protocol power module can be safely charged and discharged.

[0069] The protection unit includes a battery protection chip U1, a resistor R1, and a capacitor C1. The resistor R1 is connected between the positive terminal of the battery and the power input terminal (VDD terminal in this embodiment) of the battery protection chip U1. The negative terminal of the battery is connected to the GND terminal of the battery protection chip U1. The capacitor C1 is connected between the power input terminal and the GND terminal of the battery protection chip U1. The VN terminal of the battery protection chip U1 is grounded.

[0070] In this embodiment, the battery protection chip is the core component of the protection unit. It can monitor the battery voltage in real time to prevent overcharging or over-discharging of the battery, thereby avoiding battery damage and performance degradation. It can also monitor the short circuit status of the battery in real time. When a short circuit abnormality is detected, it can switch the circuit in time to protect the multi-protocol power module and its connected devices from damage.

[0071] Furthermore, the battery protection chip U1 is model XB8886A. In specific implementations, other models can also be used instead of the battery protection chip U1.

[0072] In this embodiment, the battery protection chip XB8886A is a highly integrated chip for lithium / polymer battery protection. The XB8886A has features required in battery applications, including but not limited to overcharge protection, over-discharge protection, overcurrent protection, and load short-circuit protection.

[0073] Those skilled in the art should understand that the above description is one embodiment provided in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Furthermore, due to differences in industry naming conventions, it is not limited to the above names or English names. Any methods or structures similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A multi-functional power bank circuit, characterized in that, This includes a multi-protocol power module, a multi-protocol discharge module, a flashlight module, and a main control module; The multi-protocol power module is equipped with a charging port that supports multiple communication protocols. The power output terminal of the multi-protocol power module is connected to the power input terminal of the multi-protocol discharge module. The power output terminal of the multi-protocol power module outputs power to supply power to external devices with corresponding communication protocols and to supply power to the flashlight module. The data communication terminal of the multi-protocol power module is connected to the data communication terminal of the main control module, and the signal output terminal of the main control module is connected to the signal input terminal of the flashlight module, so that the flashlight module can perform corresponding intensity and light control operations and strobe operations.

2. The multifunctional power bank circuit according to claim 1, characterized in that, The flashlight module includes a switch conduction unit, a high / low light control unit, and a strobe control unit; The power output terminal of the multi-protocol discharge module is connected to the power input terminal of the switch conduction unit, and the power output terminal of the switch conduction unit is connected to the power input terminal of the strong and weak light control unit and the power input terminal of the strobe control unit, respectively. The switch signal output terminal of the main control module is connected to the enable signal input terminal of the switch conduction unit, the first switching signal output terminal of the main control module is connected to the enable signal input terminal of the strong and weak light control unit, and the second switching signal output terminal of the main control module is connected to the enable signal input terminal of the strobe control unit. The intensity and weakness light control unit performs the corresponding intensity and weakness light control operation according to the first switching signal output by the first switching signal output terminal of the main control module. The strobe control unit executes the corresponding strobe control operation according to the second switching signal output by the second switching signal output terminal of the main control module.

3. The multifunctional power bank circuit according to claim 2, characterized in that, The switching unit includes a switching element Q3, a transistor Q6, resistors R29, R30, and R31, and a capacitor C29. The power output terminal of the multi-protocol discharge module is connected to the first conducting terminal of the switching element Q3. The power output terminal of the multi-protocol discharge module is connected to the first terminal of resistor R29. The second terminal of resistor R29 is connected to the first terminal of resistor R30. The common node of the second terminal of resistor R29 and the first terminal of resistor R30 is connected to the controlled terminal of the switching element Q3. The second terminal of resistor R30 is connected to the collector of transistor Q6. Resistor R31 is connected between the switch signal output terminal of the main control module and the base of transistor Q6. The second conducting terminal of the switching element Q3 is connected to the power input terminal of the strong / weak light control unit and the power input terminal of the strobe control unit.

4. The multifunctional power bank circuit according to claim 2, characterized in that, The strong / weak light control unit includes a DC-DC converter chip U2, an inductor L2, a diode D1, resistors R3, R4, and R13, and an array display unit. The power output terminal of the switch-on unit is connected to the power input terminal of the DC-DC converter chip U2. The first switching signal output terminal of the main control module is connected to the controlled signal input terminal of the DC-DC converter chip U2. There is a connection between the power input terminal of the DC-DC converter chip U2 and the signal switching terminal of the DC-DC converter chip U2. The inductor L2 is connected to the signal switching terminal of the DC-DC converter chip U2, which is connected to the positive terminal of the diode D1. The negative terminal of the diode D1 is connected to the signal output terminal of the DC-DC converter chip U2, which is connected to the signal input terminal of the array display unit. The resistor R3 is connected between the signal output terminal of the array display unit and ground, and the resistor R4 is connected between the signal output terminal of the array display unit and the voltage feedback terminal of the DC-DC converter chip U2.

5. A multi-functional power bank circuit according to claim 4, characterized in that, The array display unit includes multiple parallel indicator light columns, and each indicator light column includes multiple light-emitting diodes connected in series.

6. A multifunctional power bank circuit according to claim 2, characterized in that, The strobe control unit includes a DC-DC converter chip U4, an inductor L3, a diode D2, a light-emitting diode LED46, resistors R18, R19, R20, and R22. The power output terminal of the switch-on unit is connected to the power input terminal of the DC-DC converter chip U4. The second switching signal output terminal of the main control module is connected to the controlled signal input terminal of the DC-DC converter chip U4. The inductor is connected between the power input terminal and the signal switching terminal of the DC-DC converter chip U4. L3, the signal switching terminal of the DC-DC converter chip U4 is connected to the positive terminal of diode D2, the negative terminal of diode D2 is connected to the signal output terminal of the DC-DC converter chip U4, the signal output terminal of the DC-DC converter chip U4 is connected to the positive terminal of the light-emitting diode LED46 by resistor R22, the negative terminal of the light-emitting diode LED46 is connected to ground by resistor R18, and the negative terminal of the light-emitting diode LED46 is connected to the voltage feedback terminal of the DC-DC converter chip U4 by resistor R19.

7. The multifunctional power bank circuit according to claim 1, characterized in that, The multi-protocol discharge module includes switching elements Q1, Q2, Q4, and Q5, an inductor L7, an RC filter unit, resistors R10, R11, R12, R14, FB1, FB2, FB3, FB5, a MICRO discharge port, a USB1 discharge port, a USB2 discharge port, and a USBC discharge port. The power output terminal of the multi-protocol power module is connected to the signal input terminal of the RC filter unit. The signal output terminal of the RC filter unit is connected to the signal input terminal of the inductor L7. The signal output terminal of the inductor L7 is connected to the first conducting terminal of the switching element Q1. The controlled terminal of the switching element Q1 is connected to the first signal control terminal of the multi-protocol power module. The resistor FB1 is connected between the second conducting terminal of the switching element Q1 and the MICRO discharge port. The signal output terminal of inductor L7 is also connected to the first conducting terminal of switch element Q5. The controlled terminal of switch element Q5 is connected to the second signal control terminal of the multi-protocol power module. The resistor FB2 is connected between the second conducting terminal of switch element Q5 and the USB1 discharge port. The signal output terminal of inductor L7 is also connected to the first conducting terminal of switch element Q2. The controlled terminal of switch element Q2 is connected to the third signal control terminal of the multi-protocol power module. The resistor FB3 is connected between the second conducting terminal of switch element Q2 and the USB2 discharge port. The signal output terminal of inductor L7 is also connected to the first conducting terminal of switch element Q4. The controlled terminal of switch element Q4 is connected to the fourth signal control terminal of the multi-protocol power module. The resistor FB5 is connected between the second conducting terminal of switch element Q4 and the USBC discharge port.

8. A multi-functional power bank circuit according to claim 1, characterized in that, The multi-protocol power module also includes an over-temperature detection unit. The signal input terminal of the over-temperature detection unit is used to detect the temperature of the multi-protocol power module, and the signal output terminal of the over-temperature detection unit is connected to the signal enable input terminal of the multi-protocol power module so that charging of external devices is stopped when the temperature of the multi-protocol power module is detected to be too high.

9. A multifunctional power bank circuit according to claim 8, characterized in that, The over-temperature detection unit includes a resistor RT1 and a capacitor C16. The temperature detection terminal of the multi-protocol power module is connected to one end of the resistor RT1, the other end of the resistor RT1 is connected to one end of the capacitor C16, and the other end of the capacitor C16 is connected to the signal enable input terminal of the multi-protocol power module.

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