Battery expansion force real-time monitoring system based on multi-dimensional sensor

Abstract

The invention discloses a battery expansion force real-time monitoring system based on a multi-dimensional sensor, and relates to the technical field of batteries. The battery expansion force real-time monitoring system based on the multi-dimensional sensor comprises a sensor module, the sensor module is in signal transmission connection with a data acquisition module, the data acquisition module is in signal transmission connection with a data transmission module, and the data transmission module is in signal transmission connection with a data processing module. According to the battery expansibility real-time monitoring system based on the multi-dimensional sensor, the pressure sensor, the strain sensor and the temperature sensor are fused, the battery state information is obtained from different angles, the limitation of a single sensor is avoided, the real expansion condition of the battery can be reflected more comprehensively, and the monitoring accuracy is improved. The pressure sensor is mounted at a key position of a battery shell, the strain sensors are adhered to different parts of the surface of the battery, and the temperature sensors are distributed at different positions of the battery, so that all parts of the battery can be monitored in all directions, the local expansion problem can be found in time, and the safety of the battery in the using process is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a real-time monitoring system for battery expansion force based on multi-dimensional sensors. Background Art

[0002] In today's rapidly developing energy field, as a core energy storage component, batteries play an indispensable role in key application scenarios such as new energy vehicles, large-scale energy storage power stations, and portable electronic devices. With the increasingly stringent requirements for battery performance, safety, and reliability in these fields, deeply understanding and effectively monitoring various state changes during battery use, especially the battery expansion phenomenon, has become the key to ensuring the stable operation of the battery system. During the charge and discharge cycle of a battery, due to factors such as complex internal electrochemical reactions, phase changes of electrode materials, and decomposition of electrolytes, the battery will inevitably expand. This expansion will not only gradually lead to a decrease in battery capacity and an increase in internal resistance, thereby reducing the overall performance of the battery, but may also pose serious safety hazards. In new energy vehicles, excessive expansion of the battery may damage the mechanical structure of the battery module, cause internal short circuits in the battery, and then trigger thermal runaway, posing a serious threat to the lives of vehicle occupants. In an energy storage power station, if battery expansion is not detected and controlled in a timely manner, it may trigger a chain reaction, resulting in large-scale battery failures, causing huge economic losses, and may also trigger catastrophic accidents such as fires.

[0003] Currently, there are many limitations in the existing battery expansion force detection methods. Most traditional detection means rely on a single type of sensor, such as only using a pressure sensor and judging the expansion state of the battery by presetting a fixed pressure threshold. However, due to the non-uniformity and complexity of the internal structure of the battery, a single pressure sensor cannot comprehensively and accurately reflect the true expansion situation of each part of the battery. In addition, during the actual operation of the battery, its charge and discharge state, environmental temperature, and humidity and other conditions are constantly changing dynamically, and the fixed pressure threshold is difficult to adapt to these complex dynamic changes, easily leading to misjudgment and missed judgment, and unable to capture the subtle changes in battery expansion in a timely and accurate manner. More critically, the existing detection systems often ignore the significant impact of environmental factors such as temperature and humidity on battery expansion, resulting in a significant reduction in the accuracy and reliability of the detection results. In view of this, a real-time monitoring system for battery expansion force based on multi-dimensional sensors is proposed to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a real-time monitoring system for battery expansion force based on multi-dimensional sensors, which can solve the problems that during the actual operation of the battery, its charge and discharge state, environmental temperature and humidity and other conditions are constantly changing dynamically, and the fixed pressure threshold is difficult to adapt to these complex dynamic changes, which easily leads to misjudgment and missed judgment, and it is impossible to capture the subtle changes in battery expansion in a timely and accurate manner. More importantly, the existing detection systems often ignore the significant impact of environmental factors such as temperature and humidity on battery expansion, resulting in a great reduction in the accuracy and reliability of the detection results.

[0005] To achieve the above object, the present invention provides the following technical solutions: A real-time monitoring system for battery expansion force based on multi-dimensional sensors, including a sensor module, the sensor module is signal-transmission connected to a data acquisition module, the data acquisition module is signal-transmission connected to a data transmission module, the data transmission module is signal-transmission connected to a data processing module, and the data processing module is signal-transmission connected to a user interaction module; The sensor module includes a pressure sensor, a strain sensor and a temperature sensor; The pressure sensor, the strain sensor and the temperature sensor are arrayed on the battery module; Preferably, the pressure sensor is directly installed on the key stress points of the battery housing; The strain sensor is tightly bonded to the battery surface; The temperature sensors are distributed at different positions of the battery.

[0006] Preferably, the data acquisition module further includes an analog-to-digital conversion module and a signal conditioning module.

[0007] Preferably, the data transmission module includes a wired transmission and a wireless transmission module; The wireless transmission module includes wireless transmission technologies such as Bluetooth, Wi-Fi or ZigBee.

[0008] Preferably, the data processing module further includes an analysis module.

[0009] Preferably, the user interaction module further includes a visualization page and a threshold alarm module.

[0010] Preferably, the pressure sensor, the strain sensor and the temperature sensor are all signal-transmission connected to the data acquisition module.

[0011] Preferably, the installation spacing of the pressure sensor, the strain sensor and the temperature sensor is 100 mm² - 150 mm².

[0012] Preferably, the sensor module is signal-transmission connected to a redundancy module, and the redundancy module is a spare pressure, strain and temperature sensor; The pressure sensor, strain sensor, and temperature sensor are all embedded with a self-diagnosis module; The self-diagnosis module is signal-transmission connected to the redundancy module.

[0013] Preferably, the analysis module is signal-transmission connected to a backup traceability module, and the backup traceability module is used to establish an abnormal data backup mechanism Compared with the prior art, the beneficial effects of the present invention are: (1) This real-time battery swelling force monitoring system based on multi-dimensional sensors integrates pressure, strain, and temperature sensors to obtain battery state information from different angles, avoiding the limitations of a single sensor, and being able to more comprehensively reflect the true swelling situation of the battery. The pressure sensor is installed at key positions on the battery shell, the strain sensor is pasted on different parts of the battery surface, and the temperature sensors are distributed at different positions of the battery, enabling all-round monitoring of various parts of the battery and timely discovery of local swelling problems, thus ensuring the safety during the use of the battery.

[0014] (2) This real-time battery swelling force monitoring system based on multi-dimensional sensors can select wireless transmission technologies such as Bluetooth, Wi-Fi, or ZigBee in an environment where wiring is inconvenient to achieve convenient data transmission, without being restricted by space and wiring, improving the flexibility and adaptability of the system.

[0015] (3) This real-time battery swelling force monitoring system based on multi-dimensional sensors calculates the battery swelling force using a mathematical model and analyzes historical data in combination with machine learning algorithms to establish a battery health status evaluation model, which can not only obtain the swelling force value in real time but also predict the remaining life and potential failure risks of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the drawings and embodiments: Figure 1 It is a schematic flowchart of the real-time battery swelling force monitoring system based on multi-dimensional sensors of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0018] In the description of the present invention, it should be understood that regarding the orientation description, for example, the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0019] In the description of the present invention, greater than, less than, exceeding, etc. are understood not to include the present number, and above, below, within, etc. are understood to include the present number. If the first and second are described, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0020] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0021] Please refer to Figure 1 , the present invention provides a technical solution: a real-time monitoring system for battery expansion force based on multi-dimensional sensors, including a sensor module. The sensor module is signal-transmission-connected to a data acquisition module, the data acquisition module is signal-transmission-connected to a data transmission module, the data transmission module is signal-transmission-connected to a data processing module, and the data processing module is signal-transmission-connected to a user interaction module; Among them, the sensor module includes a pressure sensor, a strain sensor, and a temperature sensor; Among them, the pressure sensor, the strain sensor, and the temperature sensor are arrayed on the battery module; Further, the pressure sensor is directly installed on the key stress points of the battery housing to directly measure the impact on the housing caused by battery expansion; The strain sensor is tightly bonded to the battery surface, so as to accurately capture the subtle changes caused by battery expansion; The temperature sensors are distributed at different positions of the battery to monitor the real-time temperature when the battery is working; By integrating the pressure, strain, and temperature sensors, battery state information is obtained from different angles, avoiding the limitations of a single sensor, and being able to more comprehensively reflect the true expansion situation of the battery. The pressure sensor is installed at key positions on the battery housing, the strain sensor is pasted on different parts of the battery surface, and the temperature sensors are distributed at different positions of the battery, which can realize the all-round monitoring of each part of the battery and timely discover local expansion problems; Further, when installing the pressure sensor, use a specific adapter fixture to firmly install it at the key stress points of the battery housing, ensuring that the sensor is in close contact with the housing to avoid loosening or poor contact. Before installing the strain sensor, clean the battery surface, and use a special adhesive to firmly bond the strain sensor to the battery surface. Pay attention to avoiding the generation of air bubbles during the bonding process to ensure full contact between the sensor and the battery surface for accurately capturing the strain signal. When installing the temperature sensor, distribute it evenly at different positions such as the positive and negative electrodes and the electrolyte area of the battery according to the internal structure characteristics of the battery, and use a high-temperature-resistant fixing glue to fix the sensor to ensure its stable position during the operation of the battery; Among them, the signal transmission of the sensor module is connected with a redundant module. The redundant module is a spare pressure, strain, and temperature sensor. Therefore, when the main device of the sensor module is damaged, the redundant module is activated, and then the battery is continuously monitored through the spare redundant module; Among them, the pressure sensor, strain sensor, and temperature sensor are all embedded with a self-diagnosis module. Therefore, the working state of the sensor is self-diagnosed through the self-diagnosis module. By regularly sending detection instructions to the sensor, check whether the output signal of the sensor is within a reasonable range and whether the response time is normal, etc. If it is found that the sensor fails or is abnormal, the system immediately issues an alarm, marks the data of the sensor as unreliable, and at the same time activates the spare sensor of the redundant module or takes corresponding fault handling measures to avoid incorrect data from entering the system; Among them, the self-diagnosis module is signal-transmission connected to the redundant module. Therefore, when the self-diagnosis module detects that the sensor cannot be used normally, the redundant module activates the corresponding spare sensor to monitor the battery; Further, the data acquisition module further includes an analog-to-digital conversion module and a signal conditioning module; Among them, the signal conditioning module amplifies and processes the signal of the sensor to ensure the signal quality; The signal conditioning module uses [specific chip model 1] to amplify and process the weak signal output by the sensor. During the amplification process, according to the output signal characteristics of different sensors, set an appropriate amplification factor. For example, for the signal output by the pressure sensor, the amplification factor is set to [X] times; for the strain sensor signal, the amplification factor is set to [X] times to ensure that the amplitude of the amplified signal meets the input requirements of the analog-to-digital conversion module. At the same time, the signal conditioning module also has a filtering function to filter out high-frequency noise in the signal and improve the stability and reliability of the signal; The analog-to-digital conversion module converts the analog signal into a data signal for subsequent data processing and transmission; The data acquisition module first cleans and filters the collected data, which can effectively remove noise and outliers, ensure the data quality, and provide a reliable basis for subsequent analysis, The analog-to-digital conversion module selects [specific chip model 2], and its sampling frequency is set to [X] Hz. It can quickly and accurately convert analog signals into digital signals. During the conversion process, the converted digital signals are verified to ensure data accuracy. If abnormal data is found, the data acquisition module is triggered in a timely manner to re-acquire the data of this channel, preventing incorrect data from entering the subsequent processing flow; Furthermore, the data transmission module includes a wired transmission module and a wireless transmission module; Among them, the wired transmission module is suitable for scenarios with short distances and high requirements for stability, and stably transmits data to the data processing center; For wireless transmission in some scenarios where wiring is inconvenient, Wi-Fi or Bluetooth technology is selected to achieve convenient wireless data transmission; In an environment where wiring is inconvenient, wireless transmission technologies such as Bluetooth, Wi-Fi, or ZigBee can be selected to achieve convenient data transmission, which is not restricted by space and wiring, improving the flexibility and adaptability of the system; The data processing module also includes an analysis module. The data processing module can perform processing such as cleaning and denoising on the received data, removing outliers and interference signals. The analysis module uses mathematical models and machine learning algorithms to calculate the battery swelling force based on the processed data and analyze the battery health status; The battery swelling force is calculated using a mathematical model, and historical data is analyzed in combination with machine learning algorithms to establish a battery health status evaluation model, which can not only obtain the swelling force value in real time but also predict the remaining battery life and potential failure risks; The analysis module is signal-transmission-connected to a backup traceability module. The backup traceability module is used to establish an abnormal data backup mechanism. When the system detects abnormal data, it not only marks the abnormal data but also completely backs it up to an independent storage area. The backup content includes the acquisition time of the abnormal data, the sensor number, the data value, and the system status information at that time, etc. In subsequent analysis, the cause of the abnormal data can be traced, which helps to further optimize the system and improve the monitoring strategy; The user interaction module also includes a visualization page and a threshold alarm module; The visualization page displays data such as battery swelling force, temperature, and health status in an intuitive form such as charts and curves; When the battery swelling force exceeds the preset safety range, the threshold alarm module immediately issues an audible and visual alarm to alert the operator; The developed user interface displays data such as battery swelling force, temperature, and health status in an intuitive chart form. Users can easily understand and view the battery status without professional knowledge, which is convenient for monitoring and management. Alarm thresholds are set. When the battery swelling force exceeds the safe range or abnormal changes occur, the system can automatically emit an audible and visual alarm, enabling users to promptly learn about battery abnormalities and take corresponding measures to ensure the safe use of the battery; Among them, the pressure sensor, strain sensor, and temperature sensor are all signal-transmission connected to the data acquisition module.

[0022] Working principle: By integrating pressure, strain, and temperature sensors, battery status information is obtained from different perspectives, avoiding the limitations of a single sensor and being able to more comprehensively reflect the true swelling situation of the battery. The pressure sensor is installed at key positions on the battery shell, the strain sensor is pasted on different parts of the battery surface, and the temperature sensors are distributed at different positions of the battery, enabling all-round monitoring of various parts of the battery and promptly detecting local swelling problems; The data acquisition module first cleans and filters the collected data, which can effectively remove noise and outliers, ensure data quality, and provide a reliable basis for subsequent analysis; In an environment where wiring is inconvenient, wireless transmission technologies such as Bluetooth, Wi-Fi, or ZigBee can be selected to achieve convenient data transmission, which is not restricted by space and wiring, improving the flexibility and adaptability of the system; The battery swelling force is calculated using a mathematical model, and historical data is analyzed in combination with machine learning algorithms to establish a battery health status evaluation model, which can not only obtain the swelling force value in real time but also predict the remaining battery life and potential failure risks; The developed user interface displays data such as battery swelling force, temperature, and health status in an intuitive chart form. Users can easily understand and view the battery status without professional knowledge, which is convenient for monitoring and management. Alarm thresholds are set. When the battery swelling force exceeds the safe range or abnormal changes occur, the system can automatically emit an audible and visual alarm, enabling users to promptly learn about battery abnormalities and take corresponding measures to ensure the safe use of the battery; The system has good scalability. According to different application requirements and battery types, the number and type of sensors can be flexibly increased or adjusted, and the data processing algorithms and models can also be optimized and upgraded to adapt to the monitoring of battery systems of different scales and complexities. The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A real-time monitoring system for battery expansion force based on a multi-dimensional sensor, including a sensor module, characterized in that: The sensor module signal transmission is connected to the data acquisition module, the data acquisition module signal transmission is connected to the data transmission module, the data transmission module signal transmission is connected to the data processing module, and the data processing module signal transmission is connected to the user interaction module; the sensor module includes a pressure sensor, a strain sensor and a temperature sensor; the pressure sensor, the strain sensor and the temperature sensor are arrayed on the battery module.

2. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The pressure sensor is directly installed on the key stress point of the battery shell; the strain sensor is tightly bonded to the battery surface; and the temperature sensor is distributed at different positions of the battery.

3. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The data acquisition module also includes an analog-to-digital conversion module and a signal conditioning module.

4. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The data transmission module includes wired transmission and wireless transmission modules; The wireless transmission module includes wireless transmission technologies such as Bluetooth, Wi-Fi or ZigBee.

5. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The data processing module also includes an analysis module.

6. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The user interaction module also includes a visualization page and a threshold alarm module.

7. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The pressure sensor, strain sensor and temperature sensor are all connected to the data acquisition module for signal transmission.

8. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The installation spacing of the pressure sensor, strain sensor and temperature sensor is 100mm²-150mm².

9. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 1, characterized in that: The sensor module is connected to a redundant module for signal transmission, and the redundant module is a spare pressure, strain and temperature sensor; the pressure sensor, strain sensor and temperature sensor are all embedded in a self-diagnosis module; the self-diagnosis module is connected to the redundant module for signal transmission.

10. The battery expansion force real-time monitoring system based on multi-dimensional sensors according to claim 5, characterized in that: The analysis module is connected to a backup tracing module via signal transmission, and the backup tracing module is used to establish an abnormal data backup mechanism.

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