Battery safety device integrating fault early warning, positioning and replacement identification

Abstract

The invention discloses a battery safety device integrating fault early warning, positioning and replacement identification, the device integrates a battery data monitoring subsystem, a high-precision positioning subsystem, a wireless communication subsystem and the like, and battery safety early warning algorithm software and battery replacement identification algorithm software are deployed in the wireless communication subsystem. The battery safety device provided by the technical scheme can be mounted on a battery side, uses a wireless communication chip as a main controller to externally expand other functional hardware, and can read battery state data and positioning data in real time, perform information interaction with a high-precision positioning platform, and comprehensively diagnose battery safety faults and battery cell replacement faults on line; and then, data such as battery state, positioning and replacement fault diagnosis results are sent to a battery data platform through uplink communication, so that the operation safety of a battery system is ensured.

Description

Technical Field

[0001] This invention belongs to the field of online safety diagnosis and evaluation technology for battery systems, and specifically relates to a battery safety device that integrates fault early warning, location and replacement identification. Background Technology

[0002] Due to the lack of precise battery traceability and identification mechanisms, companies struggle to effectively monitor the source and usage status of batteries. Therefore, developing a battery safety device that integrates fault warning, high-precision positioning, and replacement identification is not only a key technological breakthrough for improving the safety and intelligence of electric bicycles, but also of great significance for building a full battery lifecycle management system and promoting the standardized development of the industry.

[0003] Currently, most electric bicycles still rely on simple diagnostic strategies based on parameters such as voltage and temperature, failing to integrate battery models and big data algorithms, making it difficult to provide timely warnings of potential battery failures. Furthermore, the lack of precise battery traceability and identification mechanisms makes it difficult to effectively monitor the battery's origin and usage status.

[0004] To address the aforementioned technical problems, this invention provides an integrated battery safety device with the following main features: (1) an integrated functional design that enables real-time battery monitoring, accurate battery status diagnosis, and safety warnings; (2) the ability to remotely interact with a high-precision positioning platform and a data platform, enabling real-time monitoring of battery usage behavior; and (3) the deployment of online diagnostic algorithms for battery health management, fault diagnosis, and thermal runaway warning in a wireless communication chip, enabling early warning analysis of battery faults. Summary of the Invention

[0005] To address the technical problems existing in the background art, the present invention aims to provide a battery safety device that integrates fault early warning, location, and replacement identification. It employs an integrated functional design to achieve real-time battery monitoring, accurate battery status diagnosis, and safety early warning; it possesses remote information interaction capabilities with a high-precision positioning platform and data platform, enabling real-time monitoring of battery usage behavior; and it deploys online diagnostic algorithms for battery health management, fault diagnosis, and thermal runaway early warning in a wireless communication chip, allowing for early warning analysis of battery faults.

[0006] To solve the technical problem, the technical solution of the present invention is as follows:

[0007] A battery safety device integrating fault warning, location, and replacement identification, the device comprising: a microprocessor, a high-precision positioning module, a wireless transmission module, a high-precision positioning platform, a data platform, and a battery system; the microprocessor is signal-connected to the battery system, the high-precision positioning module interacts with the microprocessor, and both the high-precision positioning platform and the data platform interact with the wireless transmission module;

[0008] The wireless transmission module is equipped with a safety warning algorithm module and a battery replacement algorithm module, which enable battery safety warning and battery replacement alarm functions.

[0009] Furthermore, the microprocessor (MCU) is responsible for acquiring the battery cell's operating data and communicating with the high-precision positioning module and the wireless transmission module via a serial port. The high-precision positioning module analyzes and calculates the battery positioning data to achieve centimeter-level high-precision positioning of the battery.

[0010] Specifically, MCU models such as CH32F203C8T6 mainly cover multiple communication functions, including serial port, CAN, I2C, and SPI, and are mainly used to read and transmit battery status data and location data.

[0011] Furthermore, the high-precision positioning module sends battery positioning data to the microprocessor via a serial port. The microprocessor then sends the data to the wireless transmission module via serial communication. Subsequently, the wireless transmission module wirelessly transmits the positioning data to the high-precision positioning platform. After calculation, the high-precision positioning platform wirelessly returns the positioning difference value to the wireless transmission module. The wireless transmission module then transmits the returned positioning difference value to the microprocessor via a serial port. The microprocessor transmits the returned positioning difference value back to the high-precision positioning module via a serial port. The high-precision positioning module then performs calculations and sends the new positioning data to the microprocessor. The microprocessor then sends the new positioning data to the wireless transmission module. Finally, the wireless transmission module wirelessly packages the positioning data and sends it to the data platform above, thereby realizing the high-precision battery positioning function.

[0012] Specifically, centimeter-level high-precision positioning relies on an RTK platform for accurate location. Without an RTK platform to provide differential data, the positioning module at the edge operates in standalone mode, resulting in low positioning accuracy. Data transmission between the positioning module and the RTK platform requires data pass-through through an MCU and a wireless communication module, which introduces some latency. The positioning update cycle can be as low as 1 second, meeting the positioning requirements of civilian devices. High-precision positioning involves less than 1KB of data with a 1-second data cycle. The low-speed, low-data communication has high reliability and an extremely low packet loss rate, typically less than 0.1%.

[0013] Furthermore, the safety warning algorithm module in the wireless transmission module is used to calculate and output battery fault diagnosis results in real time by periodically inputting battery cell voltage, temperature, and SOC characteristic parameters obtained from the microprocessor, and then transmitting the results to the data platform via wireless communication, thereby realizing the battery safety warning function.

[0014] Specifically, the algorithm performs real-time calculations using battery state data, calculates cell internal resistance based on voltage changes caused by current variations in charging data, identifies cell OCV-SOC based on Kalman filtering and the battery Rint module, calculates cell self-discharge rate using charging capacity and curve similarity principles within a fixed SOC range in charging data, and deploys a redundant judgment mechanism for battery fault detection. It only diagnoses a faulty cell when abnormal cell parameters (e.g., abnormal internal resistance, abnormal SOC, abnormal capacity, abnormal consistency) are detected and the abnormality persists (abnormalities in different SOC ranges or in different charging and discharging processes), thus preventing false alarms.

[0015] Furthermore, the battery replacement identification algorithm module in the wireless transmission module obtains battery consistency characterization parameters by periodically inputting the battery cell operating parameters obtained from the microprocessor, thereby identifying individual cells or systems with abnormal consistency. The identification results are transmitted to the data platform via wireless communication, thus realizing the battery replacement identification function. Specifically, it uses the consistency changes of cell internal resistance, SOC, and capacity to diagnose and identify abnormal cells.

[0016] Furthermore, the wireless transmission module adopts a 4G module and has data encryption transmission capabilities, such as AES128 and AES256.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] (1) Integrated system function design, which can realize monitoring of battery status and positioning; (2) Deploy edge-end battery safety fault early warning diagnosis algorithm and replacement identification algorithm, which can perform online calculation based on battery status data to realize proactive early warning. Attached Figure Description

[0019] Figure 1 A functional framework diagram of a communication and positioning system for online diagnosis of battery safety faults;

[0020] Figure 2 A schematic diagram of the high-precision battery positioning process;

[0021] Figure 3 A schematic diagram of the battery safety early warning process;

[0022] Figure 4 A schematic diagram of the battery replacement identification process. Detailed Implementation

[0023] The specific implementation of the present invention is described below with reference to embodiments:

[0024] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0026] Example 1:

[0027] The system functional framework of this technical solution is attached. Figure 1 As shown, it includes:

[0028] The integrated battery safety system mainly consists of a microprocessor (MCU), a high-precision positioning module, and a 4G module. The microprocessor acquires individual battery cell operating data and communicates with the high-precision positioning module and the 4G module via serial port. The high-precision positioning module analyzes and calculates battery positioning data, achieving centimeter-level high-precision positioning of the battery. The 4G module incorporates safety warning and battery replacement algorithm software, enabling battery safety warnings and battery replacement alarms.

[0029] The goal of the high-precision positioning function is to achieve centimeter-level high-precision positioning of the battery. Its workflow is as follows: Figure 2 As shown in the diagram, the high-precision positioning module first sends battery positioning data to the microprocessor (MCU) via a serial port. The MCU then sends the data to the 4G module via serial communication. Subsequently, the 4G module wirelessly transmits the positioning data to the high-precision positioning platform. The high-precision positioning platform calculates the positioning difference and wirelessly returns the positioning differential value to the 4G module. The 4G module then transmits the returned positioning differential value to the microprocessor via a serial port. The microprocessor transmits the returned positioning differential value back to the high-precision positioning module via a serial port. The high-precision positioning module then performs calculations and sends the new positioning data to the microprocessor. The microprocessor then sends the new positioning data to the 4G module. Finally, the 4G module wirelessly packages the positioning data and sends it to the data platform above, thus achieving the high-precision battery positioning function.

[0030] The goal of the battery safety warning function is to achieve real-time diagnosis of battery faults and early warning of thermal runaway. Its workflow is as follows: Figure 3As shown, the 4G module has a built-in battery safety warning algorithm. By periodically inputting characteristic parameters such as battery cell voltage, temperature, and SOC obtained from the microprocessor, it calculates and outputs battery fault diagnosis results in real time, and transmits the results to the data platform via wireless communication, thereby realizing the battery safety warning function.

[0031] The battery replacement identification function aims to monitor whether any individual cells or systems within a battery have been replaced. Its workflow is as follows: Figure 4 As shown, the 4G module has a built-in battery replacement identification algorithm. By periodically inputting the battery cell operating parameters obtained from the microprocessor, it obtains battery consistency characterization parameters, realizes the identification of individual cells or systems with abnormal consistency, and transmits the identification results to the data platform via wireless communication, thereby realizing the battery replacement identification function.

[0032] It can be understood that the system is a battery safety device that integrates safety fault early warning, high-precision positioning, and replacement identification; the system has a battery safety early warning process framework, a high-precision positioning process framework, and a replacement identification process framework; the system deploys battery fault real-time diagnosis and thermal runaway early warning algorithms, which can provide online real-time safety warnings for the battery.

[0033] In an alternative implementation, the positioning subsystem may be a standalone positioning module or integrated into the uplink communication subsystem, and the battery safety warning algorithm and battery replacement identification algorithm may be modified according to actual application conditions.

[0034] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

[0035] Many other changes and modifications can be made without departing from the concept and scope of this invention. It should be understood that this invention is not limited to the specific embodiments, and the scope of this invention is defined by the appended claims.

Claims

1. A battery safety device integrating fault warning, location, and replacement identification, characterized in that, The device includes: a microprocessor, a high-precision positioning module, a wireless transmission module, a high-precision positioning platform, a data platform, and a battery system; the microprocessor is signal-connected to the battery system, the high-precision positioning module interacts with the microprocessor, and both the high-precision positioning platform and the data platform interact with the wireless transmission module; The wireless transmission module is equipped with a safety warning algorithm module and a battery replacement algorithm module, which enable battery safety warning and battery replacement alarm functions.

2. The battery safety device integrating fault warning, location, and replacement identification according to claim 1, characterized in that, The microprocessor is responsible for acquiring the battery cell's operating data and communicating with the high-precision positioning module and the wireless transmission module via a serial port. The high-precision positioning module analyzes and calculates the battery positioning data to achieve centimeter-level high-precision positioning of the battery.

3. A battery safety device integrating fault warning, location, and replacement identification according to claim 1, characterized in that, The high-precision positioning module sends battery positioning data to the microprocessor via a serial port. The microprocessor then sends the data to the wireless transmission module via serial communication. Subsequently, the wireless transmission module wirelessly transmits the positioning data to the high-precision positioning platform. After calculation, the high-precision positioning platform wirelessly returns the positioning difference value to the wireless transmission module. The wireless transmission module then transmits the returned positioning difference value to the microprocessor via a serial port. The microprocessor transmits the returned positioning difference value back to the high-precision positioning module via a serial port. The high-precision positioning module then performs calculations and sends the new positioning data to the microprocessor. The microprocessor then sends the new positioning data to the wireless transmission module. Finally, the wireless transmission module wirelessly packages the positioning data and sends it to the data platform above, thereby achieving the high-precision battery positioning function.

4. A battery safety device integrating fault warning, location, and replacement identification according to claim 1, characterized in that, The safety warning algorithm module in the wireless transmission module is used to calculate and output battery fault diagnosis results in real time by periodically inputting battery cell voltage, temperature, and SOC characteristic parameters obtained from the microprocessor, and then transmitting the results to the data platform via wireless communication, thereby realizing the battery safety warning function.

5. A battery safety device integrating fault warning, location, and replacement identification according to claim 1, characterized in that, The battery replacement identification algorithm module in the wireless transmission module obtains battery consistency characterization parameters by periodically inputting the battery cell operating parameters obtained from the microprocessor, thereby identifying individual cells or systems with abnormal consistency and transmitting the identification results to the data platform via wireless communication, thus realizing the battery replacement identification function.

6. A battery safety device integrating fault warning, location, and replacement identification according to claim 1, characterized in that, The wireless transmission module uses a 4G module.

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