Storage battery data acquisition system with intelligent monitoring function

Abstract

The invention belongs to the technical field of storage battery monitoring, in particular to a storage battery data acquisition system with an intelligent monitoring function, which is characterized in that an integrated multi-parameter sensor module integrates voltage, current, temperature and internal resistance sensors and is detachably connected with a storage battery through an adjustable self-adaptive fixing mechanism; wired / wireless dual transmission channels, a standby power supply module and an intelligent heat dissipation structure are arranged in the dual-mode data acquisition terminal, one end of the dual-mode data acquisition terminal is electrically connected with the integrated multi-parameter sensor module, and the other end of the dual-mode data acquisition terminal is in communication connection with the centralized control box; the centralized control box is provided with a data storage and cloud interaction module. The system can adapt to storage batteries of different models and sizes, a support does not need to be customized, the installation efficiency is improved, the wired and wireless dual-channel design of the dual-mode data acquisition terminal is adopted, data transmission is stable, the accuracy rate is high, the environment adaptability is good, the standby lithium battery pack avoids outage monitoring interruption, the fault early warning indicator lamp group realizes rapid fault positioning, the maintenance time is shortened, and the maintenance cost is reduced. The efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of battery monitoring technology, specifically to a battery data acquisition system with intelligent monitoring function. Background Technology

[0002] As a core energy storage device in fields such as emergency power supplies, communication base stations, and new energy vehicles, the operating status of batteries directly affects the reliability of the entire system. Existing battery data acquisition systems mostly adopt a distributed sensor design, which requires the separate installation of sensors for different parameters, making it inconvenient.

[0003] Traditional sensors are fixed to batteries using custom brackets, requiring different brackets to be used for different battery models and sizes, resulting in low versatility and installation efficiency. Most systems rely on a single wired or wireless transmission method. Wired transmission requires extensive wiring, making construction complex and susceptible to aging lines. Wireless transmission is vulnerable to electromagnetic interference in complex industrial environments, leading to data loss. Data acquisition terminals often use ordinary plastic shells with low protection levels, making them easily damaged in harsh environments such as high temperatures and humidity. Furthermore, they lack backup power, preventing data acquisition from continuing when external power is interrupted, resulting in monitoring interruptions. The lack of intuitive fault indication structures means that when a parameter is abnormal, sensors and wiring must be checked one by one, leading to low maintenance efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a battery data acquisition system with intelligent monitoring capabilities, which improves system adaptability, reliability, and environmental adaptability, enables intelligent monitoring of all battery parameters, and solves the problems of poor sensor installation adaptability, low data transmission reliability, and insufficient equipment protection and endurance in existing battery data acquisition systems.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A battery data acquisition system with intelligent monitoring function, specifically including: The integrated multi-parameter sensor module is used to collect key operating and environmental parameters of the battery, perform preliminary optimization on the raw signals, and transmit them to the dual-mode data acquisition terminal. The integrated multi-parameter sensor module includes a housing and a sensor assembly integrated inside the housing. The sensor assembly is electrically connected to a printed circuit board disposed inside the housing. The sensor assembly includes a voltage sensor, a current sensor, a temperature sensor, and an internal resistance sensor. The voltage sensor is model ACS712, the current sensor is model INA219, the temperature sensor is model DS18B20, and the internal resistance sensor is model MAX17573. The integrated multi-parameter sensor module adopts an integrated packaging structure. The shell is made of high-temperature resistant PPS plastic, and the edge of the shell is equipped with a rubber sealing ring. A waterproof sealing interface is used to achieve a sealed connection with the external circuit. The sensor assembly is electrically connected to its respective detection probe via dedicated wires. Each detection probe is placed at a designated data acquisition location on the battery. The detection probe of each sensor extends out of the outer shell, and the probe surface is nickel-plated to enhance conductivity and corrosion resistance. The printed circuit board adopts a double-layer wiring design. The upper layer is equipped with voltage sensors, current sensors, temperature sensors, and internal resistance sensors. The lower layer is equipped with signal amplification circuits and RC filter circuits. The signal amplification circuit uses an OPA2340 operational amplifier and is connected to the output terminals of each sensor in the sensor assembly to enhance weak detection signals. The filter circuit is an RC low-pass filter structure with a 1kΩ resistor and a 0.1μF capacitor to filter out interference signals.

[0006] An adjustable adaptive fixing mechanism is used to mount the integrated multi-parameter sensor module onto the corresponding battery; The adjustable adaptive fixing mechanism includes a base, a slide rail, a sliding seat, and a locking bolt. The base is fixedly connected to the battery casing at the bottom, or it can be mounted on the battery mounting rack, depending on the actual installation situation. The top is fixedly connected to the slide rail. The sliding seat is detachably connected to the integrated multi-parameter sensor module via a snap-fit ​​connection, facilitating disassembly and replacement. The sliding seat slides along the slide rail to adjust the distance between the integrated multi-parameter sensor module and the battery detection point. The locking bolt passes through the sliding seat and abuts against the slide rail to lock the position of the sliding seat.

[0007] The dual-mode data acquisition terminal is used to receive and process data, and to manage links and interact with external systems, transmitting data to a centralized control server. The dual-mode data acquisition terminal includes a terminal shell and a main control board installed inside the terminal shell. The main control board integrates an RS485 wired communication module, a LoRa wireless communication module, a backup lithium battery pack, and an intelligent heat dissipation unit. The terminal casing is also equipped with a fault warning indicator light group. The inner wall of the terminal casing is provided with a thermally conductive silicone layer. The terminal casing is made of die-cast aluminum alloy with a thickness of 3mm. The thermally conductive silicone layer on the inner wall is 1mm thick to ensure rapid heat conduction. The main control board is electrically connected to the integrated multi-parameter sensor module, RS485 wired communication module, LoRa wireless communication module, backup lithium battery pack, intelligent heat dissipation unit, and fault warning indicator group. The main control board uses an STM32F407 microcontroller with a built-in 12-bit AD conversion module and a sampling rate of 1MHz to ensure data acquisition accuracy. It is used to convert the analog signals output by the sensor into digital signals. The RS485 wired communication module uses the MAX485 chip and has a transmission distance of up to 1200m. The LoRa wireless communication module uses the SX1278 chip, with a working frequency of 433MHz and a transmission distance of up to 3km. The intelligent heat dissipation unit includes a temperature sensing chip and a miniature cooling fan. The temperature sensing chip detects the internal temperature of the terminal casing. When the temperature exceeds a preset threshold, it triggers the miniature cooling fan to start. The temperature sensing chip is an LM35. When the detected temperature exceeds 45°C, the miniature cooling fan starts at a speed of 5000 rpm. The fan outlet is located on the side of the terminal casing. The fault warning indicator group includes LED indicators that correspond one-to-one with each sensor to indicate the sensor fault status. It has six LEDs, which correspond to the voltage, current, temperature, internal resistance sensors, as well as the communication module and power module. They are green when working normally and flash red when there is a fault. The backup lithium battery pack is connected to the external power supply circuit via a voltage monitoring chip. When the external power supply is interrupted, it automatically switches to backup power. The backup lithium battery pack uses two 18650 lithium batteries connected in series, with a capacity of 2000mAh and a battery life of ≥4h.

[0008] The centralized control server is used to receive, process, and store data, and to issue control commands to terminals or execution modules based on data analysis results, thereby enabling human-computer interaction and data visualization. The centralized control server includes a chassis, a data storage module, a 4G / 5G cloud communication module, a touch screen, and a power management module. The enclosure is made of cold-rolled steel plate with powder coating, with a thickness of 2mm. The door is equipped with an observation window for easy viewing of the inside of the enclosure. Inside the enclosure, there are shock-absorbing mounting brackets for installing various modules, which use rubber shock-absorbing pads to reduce the impact of equipment vibration. The data storage module communicates with the dual-mode data acquisition terminal, uses an SD card with a capacity of 32GB, supports cyclic storage, and is used to store the acquired data. The 4G / 5G cloud communication module uses the SIM7600 chip, supports all network types, and is used to upload collected data to the cloud monitoring platform. The touch screen is used to display battery parameters and system status in real time. It is a 7-inch TFT LCD screen with a resolution of 800×480 and can be operated by touch. The power management module of the centralized control server includes an AC / DC conversion circuit and an overvoltage protection circuit. The AC / DC conversion circuit uses the MP2307 chip, with an output current of 3A, to convert 220V AC power into 12V DC power to power the various modules of the system. The overvoltage protection circuit is a series structure of a varistor and a resettable fuse. The varistor model is 14D471K and the resettable fuse model is JK60-016. It is used to prevent the equipment from being damaged by excessive voltage.

[0009] Compared with the prior art, the present invention provides a battery data acquisition system with intelligent monitoring function, which has the following beneficial effects: This invention features an adjustable and adaptive fixing mechanism that can accommodate batteries of different models and sizes, eliminating the need for custom brackets and improving installation efficiency. The dual-mode data acquisition terminal's wired + wireless dual-channel design avoids interference and malfunctions associated with single transmission methods, ensuring stable data transmission, high accuracy, and good environmental adaptability, thus ensuring stable system operation and extending equipment lifespan. A backup lithium battery pack prevents monitoring interruptions during power outages, and a fault warning indicator group enables rapid fault location, shortening maintenance time and improving efficiency. Attached Figure Description

[0010] Figure 1 This is a system block diagram of the present invention; Figure 2 This is an assembly diagram of the integrated multi-parameter sensor module and the adjustable adaptive fixing mechanism in this invention; Figure 3 This is a partial cross-sectional view of the integrated multi-parameter sensor module in this invention.

[0011] In the diagram: 1. Integrated multi-parameter sensor module; 101. Encapsulation shell; 102. Sensor assembly; 103. Printed circuit board; 2. Adjustable adaptive fixing mechanism; 201. Base; 202. Slide rail; 203. Sliding seat; 204. Locking bolt; 3. Dual-mode data acquisition terminal; 4. Centralized control server. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0013] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, one embodiment of the present invention proposes a battery data acquisition system with intelligent monitoring function, which specifically includes: The integrated multi-parameter sensor module 1 is used to collect key operating parameters and environmental parameters of the battery, perform preliminary optimization on the raw signals, and transmit them to the dual-mode data acquisition terminal 3. The integrated multi-parameter sensor module 1 includes a package housing 101 and a sensor assembly 102 integrated inside the package housing 101. The sensor assembly 102 is electrically connected to a printed circuit board 103 disposed inside the package housing 101. The sensor assembly 102 includes a voltage sensor, a current sensor, a temperature sensor, and an internal resistance sensor. The voltage sensor is model ACS712, the current sensor is model INA219, the temperature sensor is model DS18B20, and the internal resistance sensor is model MAX17573. The integrated multi-parameter sensor module 1 adopts an integrated packaging structure. The shell is made of high-temperature resistant PPS plastic, and the edge of the shell is equipped with a rubber sealing ring. The waterproof sealing interface achieves a sealed connection with the external circuit. The sensor assembly 102 is electrically connected to its respective detection probe via dedicated wires. Each detection probe is placed at a designated data acquisition location on the battery. The detection probe of each sensor extends out of the housing, and the probe surface is nickel-plated to enhance conductivity and corrosion resistance. The printed circuit board 103 adopts a double-layer wiring design. The upper layer is equipped with voltage sensors, current sensors, temperature sensors and internal resistance sensors, and the lower layer is equipped with signal amplification circuit and RC filter circuit. The signal amplification circuit adopts an OPA2340 operational amplifier and is connected to the output terminals of each sensor in the sensor assembly 102 to enhance weak detection signals. The filter circuit is an RC low-pass filter structure with a 1kΩ resistor and a 0.1μF capacitor to filter out interference signals.

[0014] The adjustable adaptive fixing mechanism 2 is used to mount the integrated multi-parameter sensor module 1 onto the corresponding battery; The adjustable adaptive fixing mechanism 2 includes a base 201, a slide rail 202, a sliding seat 203, and a locking bolt 204. The bottom of the base 201 is fixedly connected to the battery casing, or it can be installed on the battery mounting rack, depending on the actual installation situation. The top is fixedly connected to the slide rail 202, and the length of the slide rail 202 is determined according to the specific size of the battery or battery pack. The sliding base 203 is detachably connected to the integrated multi-parameter sensor module 1 by means of a snap-fit ​​connection, which facilitates disassembly and replacement. The sliding base 203 slides along the slide rail 202 to adjust the distance between the integrated multi-parameter sensor module 1 and the battery detection point. The locking bolt 204 passes through the sliding seat 203 and abuts against the slide rail 202 to lock the position of the sliding seat 203.

[0015] The dual-mode data acquisition terminal 3 is used to receive and process data, and to realize link management and external interaction, transmitting the data to the centralized control server 4; The dual-mode data acquisition terminal 3 includes a terminal shell and a main control board installed inside the terminal shell. The main control board integrates an RS485 wired communication module, a LoRa wireless communication module, a backup lithium battery pack, and an intelligent heat dissipation unit. The terminal casing is also equipped with a fault warning indicator light group. The inner wall of the terminal casing is provided with a thermally conductive silicone layer. The terminal casing is made of die-cast aluminum alloy with a thickness of 3mm. The thermally conductive silicone layer on the inner wall is 1mm thick to ensure rapid heat conduction. The main control board is electrically connected to the integrated multi-parameter sensor module 1, the RS485 wired communication module, the LoRa wireless communication module, the backup lithium battery pack, the intelligent heat dissipation unit, and the fault warning indicator group. The main control board uses an STM32F407 microcontroller with a built-in 12-bit AD conversion module and a sampling rate of 1MHz to ensure data acquisition accuracy. It is used to convert the analog signals output by the sensor into digital signals. The RS485 wired communication module uses the MAX485 chip and has a transmission distance of up to 1200m. The LoRa wireless communication module uses the SX1278 chip, with a working frequency of 433MHz and a transmission distance of up to 3km. The intelligent heat dissipation unit includes a temperature sensing chip and a miniature cooling fan. The temperature sensing chip detects the internal temperature of the terminal casing. When the temperature exceeds a preset threshold, it triggers the miniature cooling fan to start. The temperature sensing chip is an LM35. When the detected temperature exceeds 45°C, the miniature cooling fan starts at a speed of 5000 rpm. The fan outlet is located on the side of the terminal casing. The fault warning indicator group includes LED indicators that correspond one-to-one with each sensor to indicate the sensor fault status. It has six LEDs, which correspond to the voltage, current, temperature, internal resistance sensors, as well as the communication module and power module. They are green when working normally and flash red when there is a fault. The backup lithium battery pack is connected to the external power supply circuit via a voltage monitoring chip. When the external power supply is interrupted, it automatically switches to backup power. The backup lithium battery pack uses two 18650 lithium batteries connected in series, with a capacity of 2000mAh and a battery life of ≥4h.

[0016] The centralized control server 4 is used to receive, process, and store data, and to issue control commands to the terminal or execution module based on the data analysis results, so as to realize human-computer interaction and data visualization. The centralized control server 4 includes a chassis, a data storage module, a 4G / 5G cloud communication module, a touch screen, and a power management module; The enclosure is made of cold-rolled steel plate with powder coating, with a thickness of 2mm. The door is equipped with an observation window for easy viewing of the inside of the enclosure. Inside the enclosure, there are shock-absorbing mounting brackets for installing various modules, which use rubber shock-absorbing pads to reduce the impact of equipment vibration. The data storage module is connected to the dual-mode data acquisition terminal 3. It uses an SD card with a capacity of 32GB and supports cyclic storage to store the acquired data. The 4G / 5G cloud communication module uses the SIM7600 chip, supports all network types, and is used to upload collected data to the cloud monitoring platform. The touch screen is used to display battery parameters and system status in real time. It is a 7-inch TFT LCD screen with a resolution of 800×480 and can be operated by touch. The power management module of the centralized control server 4 includes an AC / DC conversion circuit and an overvoltage protection circuit; The AC / DC conversion circuit uses the MP2307 chip, with an output current of 3A, to convert 220V AC power into 12V DC power to power the various modules of the system. The overvoltage protection circuit consists of a varistor and a resettable fuse connected in series. The varistor is model 14D471K, and the resettable fuse is model JK60-016. This circuit is used to prevent damage to the equipment due to excessive voltage. The installation details for each sensor are as follows: The base 201 of the adjustable adaptive fixing mechanism 2 is attached to the battery casing with 3M adhesive or fixed to the battery pack bracket with bolts. Then, according to the position of the battery detection point, the sliding seat 203 moves along the slide rail 202. The distance between the integrated multi-parameter sensor module 1 and the detection point is precisely adjusted by the scale line of the slide rail 202. When the appropriate position is reached, the locking bolt 204 is tightened to lock the position of the sliding seat 202. The detection probes of each sensor are then placed at the detection point to ensure that the detection probes are in close contact with the detection points during the data acquisition process.

[0017] The data collection process is as follows: Voltage sensor: It collects the voltage of a single cell by contacting the positive / negative terminals of the battery through a nickel-plated brass elastic probe, with a range of 0-16V, and converts it into a 0-5V analog signal; Current sensor: The openable Hall coil is wrapped around the battery output cable and collects the charging and discharging current through electromagnetic induction. The range is -50A to +50A, and the output is a linear voltage signal. Temperature sensor: A bendable ceramic heat-conducting sheet is attached to the battery casing or the base of the terminal post. The temperature is converted into a resistance change signal through an NTC thermistor, with a range of -40℃ to 125℃. Internal resistance sensor: A dual-contact gold-plated copper probe contacts the root of the electrode and the conductive area of ​​the housing, respectively. A 1kHz high-frequency small current is injected, and the internal resistance is calculated through the voltage difference. The range is 0-500mΩ. Signal preprocessing: The printed circuit board built into the sensor module optimizes the raw signal; Signal amplification: The weak internal resistance and temperature signals are amplified by 100-1000 times using the OPA2340 operational amplifier to avoid transmission loss; Filtering and noise reduction: The RC low-pass filter circuit filters out the 50Hz power frequency interference generated by the charging and discharging of the battery; AD Conversion: The STM32 microcontroller has a built-in 12-bit AD converter that converts analog signals into digital signals, improving data accuracy.

[0018] The data transmission details are as follows: The dual-mode data acquisition terminal acts as a "transmission hub," transmitting the acquired data to the centralized control server via wired and wireless dual links, with wired transmission being the preferred method. Wired transmission: The preprocessed data of the integrated multi-parameter sensor module 1 is transmitted to the terminal via twisted-pair shielded cable. The RS485 bus protocol is used, and multi-sensor module cascading is supported. The data frame format includes "module ID + parameter type + value + check bit" to ensure data ownership and integrity. Wireless transmission: When the wired link is interrupted, the terminal determines the fault through the "link detection frame" and sends it once every 100ms. It automatically switches to wireless mode within 100ms. The LoRa module of the integrated multi-parameter sensor module 1, in the 433MHz band, wirelessly transmits the data to the terminal's LoRa receiver module. It adopts spread spectrum technology to resist electromagnetic interference, with a transmission distance of ≤3km and supports 32 concurrent nodes. Power supply guarantee: The terminal supplies 12V DC power to the integrated multi-parameter sensor module 1 via a wired link, with an output current ≤1A. It has a built-in overcurrent protection circuit. If the external power supply is interrupted, the terminal's backup lithium battery pack will automatically switch to power supply, with a battery life of ≥4 hours.

[0019] The data processing is as follows: Data aggregation and storage: Data collected from multiple terminals is received via RS485 or Ethernet and stored on a 32GB SD card in the format of "timestamp + battery ID + parameters". Simultaneously, it is uploaded to the cloud platform via a 4G / 5G module.

[0020] The specific condition assessment of the battery is as follows: Basic parameter judgment: Compare the real-time voltage, current, and temperature with preset thresholds. If the values ​​exceed the thresholds, they are marked as "abnormal". Battery health status (SOH) calculation: Combining the rate of change of internal resistance (ΔR / R0) and the capacity decay trend (based on charge-discharge cycle data), the battery health status is calculated using the formula "SOH=100%-k×(ΔR / R0+capacity decay rate)" (k is a calibration coefficient). Fault prediction: Based on the LSTM neural network model, inputting 30 days of historical data, including voltage fluctuations, internal resistance growth and temperature changes, predicts potential faults within the next 3 months, including electrode corrosion and electrolyte drying.

[0021] The specific abnormal response is as follows: Local warning: The fault indicator light group of the dual-mode data acquisition terminal 3 flashes red, and the frequency increases with the increase of the fault level. The touch screen of the centralized control server 4 pops up the abnormal information and displays the fault location.

[0022] Remote notification: The centralized control server 4 sends alarm information to the operation and maintenance platform via the 4G / 5G module, including the fault type, time, and location. It supports SMS and APP push, and the alarms are delivered within 10 seconds.

[0023] Linkage control: In case of severe anomalies, the centralized control server 4 outputs signals through relays to trigger external actuators, cut off the charging circuit to prevent overcharging, start the cooling fan to reduce the ambient temperature, and switch to the backup battery pack to ensure power supply to the load.

[0024] The system interacts locally and remotely for operation, maintenance, and parameter tuning, as detailed below: Local operation: The 7-inch touch screen of the centralized control server 4 can be used to view parameter curves, modify thresholds, and export historical data in real time; Remote management: The cloud platform supports Web / APP access, displays the battery pack health status distribution map, generates monthly operation and maintenance reports, and supports remote adjustment of sensor sampling frequency, ranging from 1 time / second to 1 time / minute; Self-calibration iteration: The system is set to automatically perform "benchmark calibration" every 30 days, correcting sensor drift error with a standard battery in a known state to ensure long-term acquisition accuracy.

[0025] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery data acquisition system with intelligent monitoring function, characterized in that, include: The integrated multi-parameter sensor module (1) is used to collect key operating parameters and environmental parameters of the battery, and to perform preliminary optimization on the raw signal before transmitting it to the dual-mode data acquisition terminal (3). An adjustable adaptive fixing mechanism (2) is used to mount the integrated multi-parameter sensor module (1) onto the corresponding battery; The dual-mode data acquisition terminal (3) is used to receive and process data, and to realize link management and external interaction, transmitting the data to the centralized control server (4). The centralized control server (4) is used to receive, process and store data, and issue control commands to the terminal or execution module based on the data analysis results to realize human-computer interaction and data visualization.

2. The battery data acquisition system with intelligent monitoring function according to claim 1, characterized in that: The integrated multi-parameter sensor module (1) includes a housing (101) and a sensor assembly (102) integrated inside the housing (101). The sensor assembly (102) is electrically connected to a printed circuit board (103) disposed inside the housing (101). The sensor assembly (102) includes a voltage sensor, a current sensor, a temperature sensor, and an internal resistance sensor; The surface of the encapsulation shell (101) is provided with a waterproof sealing interface.

3. A battery data acquisition system with intelligent monitoring function according to claim 2, characterized in that: The sensor assembly (102) is electrically connected to its respective detection probe via a dedicated wire, and each detection probe is placed at a designated data acquisition location on the battery. The printed circuit board (103) is provided with a signal amplification circuit and a filter circuit. The signal amplification circuit is connected to the output terminals of each sensor in the sensor assembly (102) to enhance weak detection signals. The filter circuit is an RC low-pass filter structure to filter out interference signals.

4. A battery data acquisition system with intelligent monitoring function according to claim 1, characterized in that: The adjustable adaptive fixing mechanism (2) includes a base (201), a slide rail (202), a sliding seat (203), and a locking bolt (204); The base (201) is fixedly connected to the battery casing at the bottom and fixedly connected to the slide rail (202) at the top; The sliding seat (203) is detachably connected to the integrated multi-parameter sensor module (1). The sliding seat (203) slides along the slide rail (202) to adjust the distance between the integrated multi-parameter sensor module (1) and the battery detection point. The locking bolt (204) passes through the sliding seat (203) and abuts against the slide rail (202) to lock the position of the sliding seat (203).

5. A battery data acquisition system with intelligent monitoring function according to claim 1, characterized in that: The dual-mode data acquisition terminal (3) includes a terminal shell and a main control board installed inside the terminal shell. The main control board integrates an RS485 wired communication module, a LoRa wireless communication module, a backup lithium battery pack, and an intelligent heat dissipation unit. The terminal casing is also equipped with a fault warning indicator light group, and the inner wall of the terminal casing is provided with a thermally conductive silicone layer; The main control board is electrically connected to the integrated multi-parameter sensor module (1), RS485 wired communication module, LoRa wireless communication module, backup lithium battery pack, intelligent heat dissipation unit and fault warning indicator group respectively. The intelligent heat dissipation unit includes a temperature sensing chip and a miniature cooling fan. The temperature sensing chip detects the internal temperature of the terminal casing, and triggers the miniature cooling fan to start when the temperature exceeds a preset threshold. The fault warning indicator group includes LED indicators that correspond one-to-one with each sensor, used to indicate the sensor fault status; The backup lithium battery pack is connected to the external power supply circuit via a voltage monitoring chip, and automatically switches to backup power when the external power supply is interrupted.

6. A battery data acquisition system with intelligent monitoring function according to claim 5, characterized in that: The main control board of the dual-mode data acquisition terminal (3) adopts an STM32 series microcontroller. The microcontroller has a built-in AD conversion module, which is used to convert the analog signal output by the sensor into a digital signal.

7. A battery data acquisition system with intelligent monitoring function according to claim 1, characterized in that: The centralized control server (4) includes a cabinet, a data storage module, a 4G / 5G cloud communication module, a touch screen, and a power management module; The enclosure is equipped with shock-absorbing mounting brackets for installing each module; The data storage module is connected to the dual-mode data acquisition terminal (3) for storing the acquired data; The 4G / 5G cloud communication module is used to upload the collected data to the cloud monitoring platform; The touch screen is used to display battery parameters and system status in real time.

8. A battery data acquisition system with intelligent monitoring function according to claim 7, characterized in that: The power management module of the centralized control server (4) includes an AC / DC conversion circuit and an overvoltage protection circuit; The AC / DC conversion circuit converts 220V AC power to 12V DC power to power the various modules of the system. The overvoltage protection circuit is a series structure of a varistor and a resettable fuse, used to prevent damage to the equipment due to excessive voltage.

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