Intelligent adjustable voltage regulator output module for mobile energy supply battery

Abstract

The utility model relates to the technical field of steady voltage output module, concretely relates to intelligent adjustable steady voltage output module of mobile energy supply battery, including power supply, steady voltage output module, two feedback modules and main control chip, and feedback module obtains voltage data through voltage division sampling circuit, amplifier circuit, buffer circuit and filter circuit, and the feedback module of former stage is connected in the power supply rear stage, and the feedback module of rear stage is connected in the steady voltage output module rear stage, in the utility model, the feedback module of former stage gathers power supply output voltage, and the feedback module of rear stage gathers steady voltage module final output voltage, forms double closed loop feedback mechanism, and main control chip is based on double -way voltage data real -time output PWM signal and adjusts steady voltage module, and response speed is fast, and voltage fluctuation is effectively suppressed, and it is guaranteed that output voltage is steady in set value.

Description

Technical Field

[0001] This utility model relates to the technical field of voltage regulated output modules, and more specifically, to an intelligent adjustable voltage regulated output module for mobile power batteries. Background Technology

[0002] With the increasing popularity of portable electronic devices, outdoor work equipment and mobile energy storage systems, the application scenarios of mobile power supply batteries are becoming more and more diverse. Different terminal devices (such as smartphones, small home appliances, industrial sensors, etc.) have significantly different requirements for power supply voltage (such as 3.3V, 5V, 12V, etc.).

[0003] The utility model patent with publication number CN219960398U discloses a buck-boost circuit for a DC-DC converter, including a power supply module, a switching module, a buck-boost module, a sampling module, and a control module.

[0004] Although the buck-boost module in this utility model steps up or down the connected power supply to match the power demand of the load, and the sampling module samples the voltage of the buck-boost module during power supply, and the sampling module disconnects the power supply of the buck-boost module through the control module when an overload occurs in the circuit, thereby protecting the circuit from damage, the buck-boost module does not perform voltage regulation, which may not meet the needs of the subsequent circuits. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent adjustable voltage regulator output module for mobile power batteries to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The intelligent adjustable voltage regulator output module for a mobile power supply battery includes a power supply, a voltage regulator output module, two feedback modules, and a main control chip. The voltage regulator output module is based on a Buck-Boost circuit for step-up and step-down voltage conversion. The feedback modules acquire voltage data through a voltage divider sampling circuit, an amplification circuit, a buffer circuit, and a filtering circuit. The front-stage feedback module is connected to the rear stage of the power supply and is used to acquire the output voltage of the power supply. The rear-stage feedback module is connected to the rear stage of the voltage regulator output module and is used to acquire the output voltage of the voltage regulator output module. The signals output by both feedback modules are input to the main control chip, which outputs a PWM signal to control the voltage regulator output module.

[0007] Preferably, the main control chip includes an analog-to-digital conversion module, a signal generation module, a display driver module, and a key detection module. The signals output by the two feedback modules are both input into the analog-to-digital conversion module. The analog-to-digital conversion module is signal-connected to the signal generation module, and the signal generation module is used to output a PWM signal to control the voltage regulation output module.

[0008] Preferably, the system also includes a matrix keypad, which is electrically connected to the keypad detection module. The keypad detection module is used to change the output voltage of the voltage regulator module. These two settings modularly integrate voltage conversion, control signal generation, display driving, and key detection functions, allowing each functional unit to perform its own function and work together efficiently. This optimizes the internal logic architecture of the module and reduces the overall design complexity. At the same time, the linkage between the matrix keypad and the key detection module allows users to intuitively and quickly set the output voltage manually, greatly improving the flexibility and ease of use of the module operation.

[0009] Preferably, the voltage regulator output module includes a transistor Q1, an inductor L1, a diode D1, and a capacitor C1, wherein the transistor Q1 is an NPN transistor; The collector of transistor Q1 is connected to the positive output terminal of the power supply, the base of transistor Q1 is connected to the output terminal of the signal generation module, the emitter of transistor Q1 is connected to the first terminal of inductor L1, the second terminal of inductor L1 is connected to the negative output terminal of the power supply, the negative terminal of diode D1 is connected to the first terminal of inductor L1, the positive terminal of diode D1 is connected to the first terminal of capacitor C1, the second terminal of capacitor C1 is connected to the second terminal of inductor L1, and the two ends of capacitor C1 serve as the two output terminals of the voltage regulation output module. Preferably, the feedback module includes resistors R1, R2, R3, R4, R5, and R6, an operational amplifier U1, a voltage follower U2, a resistor R7, and a capacitor C2. Resistors R1 and R2 form a voltage divider sampling circuit. The first end of resistor R1 and the second end of resistor R2 serve as the two input terminals of the feedback module. The second end of resistor R1 is connected to the first end of resistor R2. Resistors R3, R4, R5, and R6, along with operational amplifier U1, form an amplifier circuit. The first terminal of resistor R3 is connected to the first terminal of resistor R2, and the second terminal of resistor R3 is connected to the inverting input terminal of operational amplifier U1. The first terminal of resistor R4 is connected to the second terminal of resistor R2, and the second terminal of resistor R4 is connected to the non-inverting input terminal of operational amplifier U1. The first terminal of resistor R5 is connected to the non-inverting input terminal of operational amplifier U1, and the second terminal of resistor R5 is grounded. The first terminal of resistor R6 is connected to the inverting input terminal of operational amplifier U1, and the second terminal of resistor R6 is connected to the output terminal of operational amplifier U1. Voltage follower U2 forms a buffer circuit. The non-inverting input of voltage follower U2 is connected to the output of operational amplifier U1, and the inverting input of voltage follower U2 is connected to the output of voltage follower U2. Resistor R7 and capacitor C2 form a filter circuit. The first end of resistor R7 is connected to the output of voltage follower U2, the second end of resistor R7 is connected to the first end of capacitor C2, the second end of capacitor C2 is grounded, and the second end of resistor R7 serves as the output of the feedback module. The two input terminals of the feedback module in the front stage are respectively connected to the two output terminals of the power supply, and the two input terminals of the feedback module in the rear stage are respectively connected to the two output terminals of the voltage regulator output module. The output terminals of the two feedback modules are respectively connected to different input terminals of the analog-to-digital converter module. In these two settings, the voltage regulation output module flexibly matches the voltage requirements of different terminal devices through the Buck-Boost buck-boost function, expanding the applicable scenarios of mobile power supply batteries; the feedback module accurately processes the collected voltage signal, effectively filters out interference, amplifies weak signals, avoids distortion and loss in the signal transmission process, and provides reliable data support for the precise control of the main control chip.

[0010] Preferably, the system also includes a display screen, which is signal-connected to the display driver module. The analog-to-digital conversion module and the key detection module are both signal-connected to the display driver module. The display screen displays the output voltage of the power supply, the output voltage of the voltage regulator module, and a set voltage value. This setting allows the display to show the power supply output voltage, the actual output voltage of the voltage regulator module, and the set voltage value in real time. Users can intuitively grasp the module's working status, quickly verify whether the voltage adjustment meets expectations, and make timely adjustments, significantly improving the convenience and controllability of the module.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The voltage regulation output module in this utility model is based on the Buck-Boost circuit design, which can realize bidirectional adjustment of input voltage, match the voltage requirements of different terminal devices, and eliminate the need for additional dedicated voltage regulation devices, thus greatly improving the versatility of mobile power supply batteries.

[0012] 2. This utility model forms a dual closed-loop feedback mechanism by setting a front-stage feedback module to collect the output voltage of the power supply and a rear-stage feedback module to collect the final output voltage of the voltage regulator module. The main control chip outputs a PWM signal in real time based on the dual voltage data to adjust the voltage regulator module. The response speed is fast, effectively suppressing voltage fluctuations and ensuring that the output voltage is stable at the set value. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the voltage regulated output module in this utility model; Figure 3 This is a circuit diagram of the feedback module in the front-end stage of this utility model; Figure 4 This is a circuit diagram of the feedback module in the later stage of this utility model; Figure 5 This is a partial structural schematic diagram of the present invention; In the picture: 100. Power supply; 200. Regulated output module; 300. Feedback module; 400. Main control chip; 401. Analog-to-digital conversion module; 402. Signal generation module; 403. Display driver module; 404. Key detection module; 500, matrix keypad; 600. Display screen. Detailed Implementation

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] Please see Figures 1-5 The present invention provides the following technical solution: The intelligent adjustable voltage regulator output module for a mobile power supply battery includes a power supply 100, a voltage regulator output module 200, two feedback modules 300, and a main control chip 400. The voltage regulator output module 200 uses a Buck-Boost circuit for step-up and step-down voltage conversion. The feedback modules 300 acquire voltage data through a voltage divider sampling circuit, an amplification circuit, a buffer circuit, and a filter circuit. The front-stage feedback module 300 is connected to the stage following the power supply 100 and is used to acquire the output voltage of the power supply 100. The rear-stage feedback module 300 is connected to the stage following the voltage regulator output module 200 and is used to acquire the output voltage of the voltage regulator output module 200. The two feedback modules 300 output... All output signals are input to the main control chip 400. The main control chip 400 outputs PWM signals to control the voltage regulator output module 200. A dual closed-loop feedback mechanism is constructed through two feedback modules 300. Combined with the real-time PWM signal adjustment of the main control chip 400, the response speed is greatly improved, and the voltage fluctuations generated during the operation of the power supply 100 and the voltage regulator output module 200 are effectively suppressed, ensuring that the output voltage of the voltage regulator output module 200 is stable at the set value. At the same time, the Buck-Boost circuit design of the voltage regulator output module 200 can realize bidirectional adjustment of the input voltage, which can match the voltage requirements of different terminal devices without the need for additional dedicated voltage regulator devices, significantly improving the versatility of mobile power supply batteries.

[0016] In this embodiment, please refer to Figure 5 The main control chip 400 includes an analog-to-digital conversion module 401, a signal generation module 402, a display driver module 403, and a key detection module 404. The signals output by the two feedback modules 300 are all input into the analog-to-digital conversion module 401. The analog-to-digital conversion module 401 is connected to the signal generation module 402. The signal generation module 402 is used to output the PWM signal for controlling the voltage regulator output module 200. Through the division of labor and cooperation of the functional modules, the functions of voltage signal conversion, control signal generation, display driving, and key detection are integrated, simplifying the overall structure of the module.

[0017] Specifically, it also includes a matrix keypad 500, which is electrically connected to a key detection module 404. The key detection module 404 is used to change the output voltage of the voltage regulator module 200. The matrix keypad 500 adopts a row-column cross structure design, consisting of several independent keys arranged in rows and columns. Each key corresponds to a specific voltage adjustment level or adjustment direction (such as voltage increase, voltage decrease, confirmation setting, etc.). The key detection module 404 has a built-in row and column scanning circuit and a signal recognition unit. After establishing an electrical connection with the matrix keypad 500, it periodically outputs scanning signals to the row pins of the matrix keypad 500 and simultaneously detects the level changes of the column pins to achieve real-time monitoring of the key press status. When a button in the matrix button 500 is pressed, the row pin and column pin corresponding to that button form a conductive loop. The button detection module 404 accurately identifies the pressed button position by detecting the level change of the column pin, and then parses the user's voltage adjustment command (such as adjusting the output voltage of the voltage regulator output module 200 from 5V to 12V). Subsequently, the button detection module 404 converts the parsed adjustment command into a standardized control signal and transmits it to the signal generation module 402 of the main control chip 400. The signal generation module 402 adjusts the duty cycle of the output PWM signal according to the command, and finally controls the voltage regulator output module 200 to change the output voltage, realizing the manual adjustable function of the output voltage.

[0018] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 The voltage regulator output module 200 includes a transistor Q1, an inductor L1, a diode D1, and a capacitor C1. The transistor Q1 is an NPN transistor. The output voltage of the voltage regulator output module 200 is determined by the duty cycle of the PWM signal and the output voltage of the power supply 100. The collector of transistor Q1 is connected to the positive output terminal of power supply 100, the base of transistor Q1 is connected to the output terminal of signal generation module 402, the emitter of transistor Q1 is connected to the first terminal of inductor L1, the second terminal of inductor L1 is connected to the negative output terminal of power supply 100, the negative terminal of diode D1 is connected to the first terminal of inductor L1, the positive terminal of diode D1 is connected to the first terminal of capacitor C1, the second terminal of capacitor C1 is connected to the second terminal of inductor L1, and the two ends of capacitor C1 serve as the two output terminals of voltage regulation output module 200.

[0019] Specifically, the feedback module 300 includes resistors R1, R2, R3, R4, R5, and R6, an operational amplifier U1, a voltage follower U2, a resistor R7, and a capacitor C2. Through the coordinated operation of four stages of circuitry—voltage divider sampling, amplification, buffering, and filtering—the feedback module 300 ensures that the voltage data it collects is accurate, stable, and interference-free, effectively amplifying weak voltage signals and avoiding loss and distortion during signal transmission. Resistors R1 and R2 form a voltage divider sampling circuit. The first end of resistor R1 and the second end of resistor R2 serve as the two input terminals of the feedback module 300. The second end of resistor R1 is connected to the first end of resistor R2. Resistors R3, R4, R5, and R6, along with operational amplifier U1, form an amplifier circuit. The first terminal of resistor R3 is connected to the first terminal of resistor R2, and the second terminal of resistor R3 is connected to the inverting input terminal of operational amplifier U1. The first terminal of resistor R4 is connected to the second terminal of resistor R2, and the second terminal of resistor R4 is connected to the non-inverting input terminal of operational amplifier U1. The first terminal of resistor R5 is connected to the non-inverting input terminal of operational amplifier U1, and the second terminal of resistor R5 is grounded. The first terminal of resistor R6 is connected to the inverting input terminal of operational amplifier U1, and the second terminal of resistor R6 is connected to the output terminal of operational amplifier U1. Voltage follower U2 forms a buffer circuit. The non-inverting input of voltage follower U2 is connected to the output of operational amplifier U1, and the inverting input of voltage follower U2 is connected to the output of voltage follower U2. Resistor R7 and capacitor C2 form a filter circuit. The first end of resistor R7 is connected to the output of voltage follower U2, the second end of resistor R7 is connected to the first end of capacitor C2, the second end of capacitor C2 is grounded, and the second end of resistor R7 serves as the output of feedback module 300. The two input terminals of the pre-stage feedback module 300 are respectively connected to the two output terminals of the power supply 100, and the two input terminals of the post-stage feedback module 300 are respectively connected to the two output terminals of the voltage regulator output module 200. The output terminals of the two feedback modules 300 are respectively connected to different input terminals of the analog-to-digital converter module 401.

[0020] In this embodiment, please refer to Figure 5 It also includes a display screen 600, which is connected to the display driver module 403. The analog-to-digital conversion module 401 and the key detection module 404 are also connected to the display driver module 403. The display screen 600 displays the output voltage of the power supply 100, the output voltage of the voltage regulator module 200, and the set voltage value, which allows users to monitor the working status of the module in real time, quickly know whether the voltage adjustment has reached the expected level, and make it easy to adjust the set voltage in a timely manner, thus improving the convenience of using the module.

[0021] When the intelligent adjustable voltage regulator output module of the mobile power supply battery of this utility model is in use, the power supply 100 outputs an initial voltage, which is sent to the voltage regulator output module 200 on one hand and to the previous voltage regulator output module 200 on the other hand. The front-end feedback module 300 collects the output voltage of the power supply 100 through voltage divider sampling, amplification, buffering, and filtering circuits; the rear-end feedback module 300 collects the current output voltage of the voltage regulator output module 200 with the same circuit logic, and the dual voltage signals are output synchronously. Both voltage signals are input to the analog-to-digital converter module 401 of the main control chip 400. After the analog signals are converted into digital signals, they are transmitted in two paths. One path is sent to the signal generation module 402 to provide data for adjustment and control; the other path is sent to the display driver module 403 to provide data support for the display function. The user sets the target voltage through the matrix keypad 500. The keypad detection module 404 detects the keypad operation in real time and transmits the voltage adjustment command synchronously to the display driver module 403 and the signal generation module 402. The signal generation module 402 combines dual-channel digital voltage data with button adjustment commands to output a PWM signal with a corresponding duty cycle. The corresponding formula is: (V2+)-(V2-)=((V1+)-(V1-))D / (1-D), where V2+ and V2- are the output voltages at both ends of the voltage regulator module 200, V1+ and V1- are the output voltages at both ends of the power supply 100, and D is the duty cycle of the PWM signal. The signal generation module 402 dynamically adjusts the PWM signal to form a double closed-loop feedback to suppress voltage fluctuations. The display driver module 403 integrates the voltage data of the analog-to-digital conversion module 401 and the setting instructions of the key detection module 404 to drive the display screen 600 to display the output voltage of the power supply 100, the actual output voltage of the voltage regulator module 200, and the set voltage value in real time.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An intelligent adjustable voltage regulator output module for a mobile power supply battery, comprising a power supply (100), a voltage regulator output module (200), two feedback modules (300), and a main control chip (400), characterized in that: The voltage regulator output module (200) is based on a Buck-Boost circuit for step-up and step-down voltage conversion. The feedback module (300) acquires voltage data through a voltage divider sampling circuit, an amplification circuit, a buffer circuit, and a filter circuit. The front-stage feedback module (300) is connected to the back stage of the power supply (100) and is used to collect the output voltage of the power supply (100). The back-stage feedback module (300) is connected to the back stage of the voltage regulator output module (200) and is used to collect the output voltage of the voltage regulator output module (200). The signals output by both feedback modules (300) are input to the main control chip (400). The main control chip (400) outputs a PWM signal to control the voltage regulator output module (200).

2. The intelligent adjustable voltage regulator output module for a mobile power supply battery according to claim 1, characterized in that: The main control chip (400) includes an analog-to-digital conversion module (401), a signal generation module (402), a display driver module (403), and a key detection module (404). The signals output by the two feedback modules (300) are input into the analog-to-digital conversion module (401). The analog-to-digital conversion module (401) is connected to the signal generation module (402). The signal generation module (402) is used to output a PWM signal to control the voltage regulator output module (200).

3. The intelligent adjustable voltage regulator output module for a mobile power supply battery according to claim 2, characterized in that: It also includes a matrix keypad (500), which is electrically connected to the key detection module (404), and the key detection module (404) is used to change the output voltage of the voltage regulator module (200).

4. The intelligent adjustable voltage regulator output module for a mobile power supply battery according to claim 2, characterized in that: The voltage regulator output module (200) includes a transistor Q1, an inductor L1, a diode D1 and a capacitor C1, wherein the transistor Q1 is an NPN transistor; The collector of transistor Q1 is connected to the positive output terminal of the power supply (100), the base of transistor Q1 is connected to the output terminal of the signal generation module (402), the emitter of transistor Q1 is connected to the first terminal of inductor L1, the second terminal of inductor L1 is connected to the negative output terminal of the power supply (100), the negative terminal of diode D1 is connected to the first terminal of inductor L1, the positive terminal of diode D1 is connected to the first terminal of capacitor C1, the second terminal of capacitor C1 is connected to the second terminal of inductor L1, and the two ends of capacitor C1 serve as the two output terminals of the voltage regulation output module (200).

5. The intelligent adjustable voltage regulator output module for a mobile power supply battery according to claim 2, characterized in that: The feedback module (300) includes resistors R1, R2, R3, R4, R5, and R6, an operational amplifier U1, a voltage follower U2, a resistor R7, and a capacitor C2. Resistor R1 and resistor R2 form a voltage divider sampling circuit. The first end of resistor R1 and the second end of resistor R2 serve as the two input terminals of the feedback module (300). The second end of resistor R1 is connected to the first end of resistor R2. Resistors R3, R4, R5, and R6, along with operational amplifier U1, form an amplifier circuit. The first terminal of resistor R3 is connected to the first terminal of resistor R2, and the second terminal of resistor R3 is connected to the inverting input terminal of operational amplifier U1. The first terminal of resistor R4 is connected to the second terminal of resistor R2, and the second terminal of resistor R4 is connected to the non-inverting input terminal of operational amplifier U1. The first terminal of resistor R5 is connected to the non-inverting input terminal of operational amplifier U1, and the second terminal of resistor R5 is grounded. The first terminal of resistor R6 is connected to the inverting input terminal of operational amplifier U1, and the second terminal of resistor R6 is connected to the output terminal of operational amplifier U1. Voltage follower U2 forms a buffer circuit. The non-inverting input of voltage follower U2 is connected to the output of operational amplifier U1, and the inverting input of voltage follower U2 is connected to the output of voltage follower U2. Resistor R7 and capacitor C2 form a filter circuit. The first end of resistor R7 is connected to the output of voltage follower U2, the second end of resistor R7 is connected to the first end of capacitor C2, the second end of capacitor C2 is grounded, and the second end of resistor R7 serves as the output of the feedback module (300). The two input terminals of the feedback module (300) in the front stage are respectively connected to the two output terminals of the power supply (100), and the two input terminals of the feedback module (300) in the back stage are respectively connected to the two output terminals of the voltage regulator output module (200). The output terminals of the two feedback modules (300) are respectively connected to different input terminals of the analog-to-digital converter module (401).

6. The intelligent adjustable voltage regulator output module for a mobile power supply battery according to claim 2, characterized in that: It also includes a display screen (600), which is signal-connected to the display driver module (403). The analog-to-digital conversion module (401) and the key detection module (404) are both signal-connected to the display driver module (403). The display screen (600) displays the output voltage of the power supply (100), the output voltage of the voltage regulator module (200), and the set voltage value.

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