Mobile power supply device with cycle index recording and safety early warning functions

Abstract

The invention provides a mobile power supply device with cycle index recording and safety early warning functions, which belongs to the technical field of batteries and comprises a main control unit module, a battery management system module, an electric quantity display and interface control module, a cycle index and capacity attenuation monitoring module and a user input module. The main control unit module is in communication connection with the user input module through a GPIO (General Purpose Input / Output) or ADC (Analog to Digital Converter) interface, is in communication connection with the battery management system module through an I2C (Inter-Integrated Circuit) or UART (Universal Asynchronous Receiver / Transmitter) or SPI (Serial Peripheral Interface) interface, and is in communication connection with the electric quantity display and interface control module through the GPIO or I2C interface; and the main control unit module is in communication connection with the cycle index and capacity attenuation monitoring module through an internal logic or I2C interface. According to the mobile power supply device with the cycle index recording and safety early warning functions, the problems that in a traditional product, cell health monitoring is neglected, an early warning mechanism is lacked, the performance is reduced difficultly perceived by a user, and the safety risk is increased are solved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a portable power supply device with cycle count recording and safety warning functions. Background Technology

[0002] In the current booming portable power bank market, most mainstream products focus on basic charging and discharging operations and simple remaining power display, while seriously lacking in the monitoring and management of battery cell health. This situation brings many potential risks that cannot be ignored to users.

[0003] Currently, users of portable power banks on the market have no way of obtaining crucial safety information such as the number of battery cycle counts, real-time temperature, and capacity degradation during use. As a consumable component, the capacity of a battery cell naturally decays over time, an inevitable and objective law. However, due to the lack of effective cycle count recording mechanisms and capacity warning systems in current portable power banks, users are unable to detect the gradual decline in cell performance. This is like a hidden ailment that is difficult to detect; users may unknowingly use a power bank that has already deteriorated in performance for an extended period, allowing safety risks to accumulate unnoticed.

[0004] Lithium-ion batteries, in particular, are prone to crystallization under extreme conditions such as prolonged or high-frequency use, fatigue, and long-term cycling, due to their inherent chemical properties. These crystals act like hidden "dangerous factors" inside the battery; once they puncture the battery separator, they can trigger thermal runaway, potentially leading to fires or explosions and seriously threatening the lives and property of users. Unfortunately, most portable power banks on the market currently lack corresponding reminders and warning functions, leaving consumers in a "safety blind spot," unable to perceive the product's health status in time, and thus unable to effectively prevent and avoid potential safety hazards.

[0005] Therefore, it is imperative to develop a new type of mobile power supply device with comprehensive battery health monitoring functions. Summary of the Invention

[0006] The purpose of this invention is to provide a portable power bank device with cycle count recording and safety warning functions, which solves the problems of neglecting cell health monitoring and lacking warning mechanisms in traditional products, making it difficult for users to detect performance degradation and increasing safety risks.

[0007] To achieve the above objectives, this invention provides a portable power bank device with cycle count recording and safety warning functions, including a main control unit module, a battery management system module, a power display and interface control module, a cycle count and capacity decay monitoring module, and a user input module. The main control unit module is communicatively connected to the user input module via a GPIO or ADC interface. 2 The main control unit module communicates with the battery management system module via a C, UART, or SPI interface. 2 The C interface is connected to the power display and interface control module for communication. The main control unit module communicates via internal logic or I... 2 The C interface is connected to the cycle count and capacity decay monitoring module for communication.

[0008] Preferably, the main control unit module has a built-in central processing chip and non-volatile memory, which is used to control the overall operation and record the number of charge and discharge cycles.

[0009] Preferably, the battery management system module includes a voltage sampling unit, a current detection unit, and a temperature sampling unit, used to detect the voltage, current, temperature, and protection status of the battery cell, and to provide accurate battery cell status information to the main control unit module.

[0010] Preferably, the power display and interface control module includes an OLED screen display, a display driver chip, and a multi-interface content design, which alternately displays the power percentage, cycle count, and low capacity warning information, and switches interfaces through buttons or timed polling.

[0011] Preferably, the cycle count and capacity decay monitoring module includes discharge counting logic, Flash memory, and a SOC estimation and initial capacity comparison unit, used to accurately record the cycle count, determine the degree of capacity decay, and generate capacity warning signals.

[0012] Preferably, the cycle count and capacity decay monitoring module incorporates the SoH decay analysis model, and issues an alarm when the capacity decays to a set threshold.

[0013] Preferably, the charge / discharge cycle is determined as follows: a charging cycle is completed when the amount of electricity used is equivalent to 100% of the battery capacity, regardless of whether the process is completed through a single charge.

[0014] Therefore, the present invention employs a mobile power bank device with cycle count recording and safety warning functions as described above, and the technical effects are as follows: 1. Real-time display of charge and discharge cycle records: The main control MCU records and displays the number of charge and discharge cycles of the battery, allowing users to understand the battery's usage history, assess the battery's health status and lifespan. The user interface displays the current capacity, cycle count and battery health status through an OLED / LED screen.

[0015] 2. Battery capacity degradation detection and early warning: The system can monitor the degradation of battery capacity. When the battery capacity drops to below 80% of its original capacity, a safety early warning mechanism is automatically triggered. A warning is issued through a buzzer or LED indicator to remind the user to replace the battery in time to avoid safety hazards caused by battery aging.

[0016] 3. Improved product maintainability: By collecting key parameters such as battery voltage, current, and temperature in real time through the BMS (Battery Management System), the system provides users with detailed battery status information, making it easier for users and maintenance personnel to troubleshoot and evaluate performance. Attached Figure Description

[0017] Figure 1 This is a block diagram of the power supply system structure of the present invention; Figure 2 This is a communication logic diagram between the main control unit module and the battery management system module of the present invention; Figure 3 This is a flowchart of the loop count recording and threshold judgment process of the present invention; Figure 4 This is a schematic diagram of the user interface logic of the present invention; Figure 5 Here is a logic diagram for recording the number of loops in this invention; Figure 6 This is a flowchart illustrating the specific workflow of the present invention. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0020] Example 1 like Figure 1As shown, this invention provides a portable power bank device with cycle count recording and safety warning functions. It includes a main control unit module, a battery management system module, a power display and interface control module, a cycle count and capacity decay monitoring module, and a user input module. These modules work collaboratively, with the user input module acquiring user commands, and the main control unit module acting as the core to coordinate the operation of each module. The battery management system module is responsible for battery-related control and management, the cycle count and capacity decay monitoring module monitors battery usage, and the power display and interface control module displays relevant information to the user and handles interface interactions. This achieves comprehensive monitoring and management of the battery status, effectively improving the safety of the portable power bank and the user experience.

[0021] The main control unit module uses an STM32 series 32-bit microcontroller, with built-in non-volatile memory, RAM cache, and communication interface resources such as UART, I²C, and SPI. It is also equipped with GPIO interrupt and timer control logic to manage the overall system logic.

[0022] The main control unit module communicates with the user input module via GPIO or ADC interface. 2 The main control unit module communicates with the battery management system module via a C, UART, or SPI interface. 2 The C interface is connected to the power display and interface control module for communication. The main control unit module communicates via internal logic or I... 2 The C interface is connected to the cycle count and capacity decay monitoring module for communication.

[0023] The battery management system module includes a voltage sampling unit, a current detection unit, and a temperature sampling unit. These units are used to detect the voltage, current, temperature, and protection status of the battery cells, collect battery status information in real time, and feed it back to the main control unit module via I²C or UART bus. This provides safety protection control signals to prevent overcharging, over-discharging, and short circuits of the battery.

[0024] like Figure 2 As shown, the main control MCU and BMS modules communicate via the I²C bus. The main control MCU is responsible for reading data and calculating the battery status based on the read data; the BMS module mainly manages battery parameters and feeds back battery status information. The entire system achieves battery status monitoring and management through this division of labor and cooperation.

[0025] The cycle count and capacity decay monitoring module includes discharge counting logic, Flash memory, and a SOC estimation and initial capacity comparison unit. This module accurately records the number of charge-discharge cycles of the battery and stores it in non-volatile memory. Combined with historical capacity data, it calculates the battery's state of health (SOH) to determine if the capacity has decreased below a threshold. The cycle count and capacity decay monitoring module incorporates an SOH decay analysis model, issuing an alarm when the capacity decays to a set threshold.

[0026] like Figure 3 As shown in the flowchart, this process illustrates the recording of cycle counts and capacity threshold determination during battery testing. In the capacity testing phase, as the number of cycles increases and is recorded, the system continuously checks whether the battery capacity falls below the safety threshold of 80%. If the capacity is not lower than 80%, the testing continues; once the capacity falls below 80%, a safety warning mechanism is triggered. This, combined with temperature monitoring results, ensures battery safety, and the process ends after the warning is issued. The system detects the current cell capacity (FCC) through the BMS module and compares it with the design capacity. When the FCC is less than 80% of the design capacity, the system determines that the battery capacity has severely degraded and triggers the safety warning mechanism.

[0027] The power display and interface control module includes an OLED screen, a display driver chip, and a multi-interface design. It displays the remaining power percentage, the number of battery cycles used, and the battery health status in real time. When the battery capacity falls below a preset threshold, it displays a warning message and supports switching between multiple interfaces via buttons or timed polling. When the system detects that the battery capacity is below the preset threshold, it triggers a safety warning by flashing a red LED or sounding a buzzer. Simultaneously, it displays a "replacement suggestion" on the OLED screen, reminding the user to replace the battery promptly to avoid potential safety risks.

[0028] like Figure 4 As shown, the system can display basic information such as current battery level, charging / discharging voltage, and current, as well as the number of usage cycles and the current operating temperature of the product, which can be viewed by switching between screens. The display of the usage cycle count and the current operating temperature will automatically trigger a warning pop-up when a threshold is reached. These two screens can also be switched using a button.

[0029] like Figure 5 As shown, the system records the number of cycles in units of charging cycles. A charging cycle refers to the process of discharging and charging the battery from empty to fully charged, and it is not necessarily completed in one charge. For example, if 75% of the battery is used on the first day and fully charged overnight, and 25% is used on the second day, then one charging cycle is completed in two days. After each complete charging cycle, the system records one cycle count in the EEPROM.

[0030] like Figure 6 As shown, the system's workflow is as follows: Users can input relevant commands or set parameters in the input module, and the information is transmitted to the core processing unit module of the system, the main control unit module. The main control unit module interacts with the cycle count and capacity decay monitoring module and the battery itself, receiving the detected battery cycle count and capacity decay information, sending control commands to the battery, and acquiring the battery status in real time. Simultaneously, the main control unit module transmits the battery's real-time information to the power display and interface control module for real-time display, and triggers an alert if an abnormality is detected. After acquiring the relevant battery information, the main control unit module enters the processing and judgment stage. The system performs two important judgments: first, it updates the cycle count based on the acquired information, recording the battery's usage; second, it judges the battery capacity status, assessing the battery's health. If the battery capacity status is abnormal, the system triggers an alert, notifying the user through the power display and interface control module. After completing the cycle count update and battery capacity status judgment, the entire system continues to run in a loop, constantly monitoring and processing the battery status to ensure the battery's safe and stable operation.

[0031] Therefore, this invention employs a portable power bank device with cycle count recording and safety warning functions. By integrating a main control MCU, BMS module, display module, and cycle count detection module, it achieves comprehensive monitoring and management of battery status. This device not only improves the safety and maintainability of the portable power bank but also enhances the user experience through an intuitive display interface and warning mechanism.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A portable power bank device with cycle count recording and safety warning functions, characterized in that, It includes a main control unit module, a battery management system module, a power display and interface control module, a cycle count and capacity decay monitoring module, and a user input module. The main control unit module communicates with the user input module via GPIO or ADC interface. 2 The main control unit module communicates with the battery management system module via a C, UART, or SPI interface. 2 The C interface is connected to the power display and interface control module for communication. The main control unit module communicates via internal logic or I... 2 The C interface is connected to the cycle count and capacity decay monitoring module for communication.

2. A portable power bank device with cycle count recording and safety warning functions according to claim 1, characterized in that, The main control unit module has a built-in central processing chip and non-volatile memory, which is used to control the overall operation and record the number of charge and discharge cycles.

3. A portable power bank device with cycle count recording and safety warning functions according to claim 1, characterized in that, The battery management system module includes a voltage sampling unit, a current detection unit, and a temperature sampling unit, which are used to detect the voltage, current, temperature, and protection status of the battery cells, and provide accurate battery cell status information to the main control unit module.

4. A portable power bank device with cycle count recording and safety warning functions according to claim 1, characterized in that, The power display and interface control module includes an OLED screen display, a display driver chip, and a multi-interface content design. It displays the power percentage, cycle count, and low capacity warning information in turn, and switches between interfaces through buttons or timed polling.

5. A portable power bank device with cycle count recording and safety warning functions according to claim 1, characterized in that, The cycle count and capacity decay monitoring module includes discharge counting logic, Flash memory, and SOC estimation and initial capacity comparison unit, which are used to accurately record the cycle count, determine the degree of capacity decay, and provide capacity warning signals.

6. A portable power bank device with cycle count recording and safety warning functions according to claim 1, characterized in that, The cycle count and capacity decay monitoring module incorporates the SoH decay analysis model, which issues an alarm when the capacity decays to a set threshold.

7. A portable power bank device with cycle count recording and safety warning functions according to claim 2, characterized in that, The charge / discharge cycle is determined as follows: a charging cycle is completed when the amount of electricity used is equivalent to 100% of the battery capacity, regardless of whether the process is completed through a single charge.

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