CN219328875U - Online supervisory equipment of battery - Google Patents

Abstract

The utility model discloses storage battery online monitoring equipment which comprises a main control unit, wherein the main control unit is respectively in communication connection with a communication interface unit, a power supply unit, a display unit and a mains supply detection unit; the main control unit is connected with the convergence communication unit through the communication interface unit; the convergence communication unit is connected with the storage battery through the battery detection unit; the communication interface unit is connected with the mains supply detection unit. The utility model solves the problems of untimely and inaccurate fault prediction and performance evaluation of the storage battery pack in the early stage, poor convenience in installation and use and the like in the prior art.

Description

Online supervisory equipment of battery

Technical Field

The utility model belongs to the technical field of storage battery monitoring, and relates to storage battery online monitoring equipment.

Background

The storage battery on-line monitoring equipment generally consists of a station and a central station (server side), and some scene environments only have a single station form and can independently operate. The station part comprises a main control unit (AS 01), one or a plurality of acquisition units (dcm) and a convergence unit. The central station comprises one or more data servers and WEB end storage battery monitoring system software and is used for data processing, storage and output. The rack-mounted installation and independent installation of the cabinet can be carried out according to different configurations of machine rooms of different stations, local area networks, direct communication and the like. The problems of the monitoring equipment in the current market mainly comprise the problems of untimely and inaccurate early failure prediction and performance evaluation of the storage battery, poor convenience in installation and use and the like.

Disclosure of Invention

In order to achieve the purpose, the utility model provides the storage battery online monitoring equipment, which solves the problems of untimely and inaccurate early failure prediction and performance evaluation of the storage battery pack, poor convenience in installation and use and the like in the prior art.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the storage battery online monitoring equipment comprises a main control unit, wherein the main control unit is respectively in communication connection with a communication interface unit, a power supply unit, a display unit and a mains supply detection unit; the main control unit is connected with the convergence communication unit through the communication interface unit; the convergence communication unit is connected with the storage battery through the battery detection unit; the communication interface unit is connected with the mains supply detection unit.

Further, the main control unit peripheral RS232 communication interface P24 is connected to the communication interface unit interface RS200; the main control unit mainboard is externally provided with a 485 communication interface P23 which is connected to a communication interface unit interface J10; the main control unit peripheral Ethernet interface P26 is connected with the communication interface unit.

Further, the communication interface unit is connected with the mains supply detection unit through a CPU chip scheduling serial port RS 232; the CPU chip is connected with a temperature sensor and a humidity sensor; and a TLC555 circuit is arranged between the CPU chip and the humidity sensor.

Further, the battery detection unit comprises an electronic load loop and a voltage signal feedback line, and the electronic load loop is connected in parallel with two ends of the storage battery; the two ends of the storage battery are connected with a sampling circuit of the battery detection unit through a voltage signal feedback line; and the negative electrode of the storage battery is connected with a battery negative electrode temperature sensor of the battery detection unit.

Further, the electronic load loop adopts a resistor R11 as a fixed load resistor, the self-recovery fuse F2 is connected to one end of the load resistor R11, the other end of the load resistor R11 is connected to the D pole of the MOS tube U6, the S pole of the MOS tube U6 is connected with the S pole of the MOS tube U8, and the D pole of the MOS tube U8 is connected with the diode D2.

Further, the sampling circuit comprises a direct current coupling path and an alternating current coupling path, wherein the direct current coupling path is connected to an AD sampling port of the MCU through voltage division of resistors R23 and R25, and the alternating current coupling path is connected to the AD sampling port of the MCU through voltage division of coupling capacitors C19 and R28; the MCU is connected to the convergence communication unit through the UART and/or the wireless unit.

Further, the CPU of the convergence communication unit is in communication connection with the battery detection unit output interface CN1 through the PC10, the PC11 port to the J4 port; the convergence communication unit is connected with the communication interface unit through an RS485 communication interface J3; and a CPU of the convergence communication unit is connected with a U18 chip through a PC0 port 16-bit ADC peripheral.

Further, the commercial power detection unit is connected with an alternating current power supply through a green terminal interface of the unit X1, then is connected to one end of a capacitor C100, one end of the capacitor C100 is connected to one end of a resistor R100, one end of the resistor R100 is connected to the positive end of a diode D100, meanwhile, is connected to the negative end of a diode D103, the positive end of the diode D103 is connected to one end of the capacitor C103, the other end of the capacitor C103 is connected with the negative end of the diode D100, then is connected to one end of a resistor R103, the other end of the resistor R103 is respectively connected to the negative end of a diode D106 and one end of a resistor R106, and the other end of the resistor R106 is connected to the positive end of a U100 optocoupler P521.

Further, the main board of the main control unit is a FETMX6Q-C core board.

Further, the main board of the main control unit is connected with an LVDS CONNECTOR interface of a liquid crystal screen of the display unit through an LVDS interface P18; the P20 interface of the mainboard is packaged into an XH2.54 white socket; and the mainboard P19 interface is accessed to the AMT touch screen.

The beneficial effects of the utility model are as follows:

1. the early fault early warning can be provided for the problems of the storage battery, the health state of each storage battery monomer is detected by a method for testing the voltage, the temperature and the internal resistance of the storage battery at fixed time, and the current performance state can be accurately predicted.

2. The independent load units can be controlled to perform maintenance work.

3. And the system is compatible with various communication protocols, realizes online switching and use, and transmits the real-time progress.

4. Convenience of field installation and use: for the same station, by means of cascade connection of the convergence communication unit and the battery detection unit, the control unit can manage multiple groups of storage battery packs of different types at the same time, and the internal resistance test function can be triggered at regular time according to the time period configured by a user.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an on-line monitoring device for a storage battery according to an embodiment of the present utility model.

Fig. 2 is a schematic circuit diagram of a master control unit according to an embodiment of the present utility model.

Fig. 3 is a circuit diagram of an MCU circuit and an LED indicator of the battery detection unit according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of a voltage signal measuring circuit of the battery detecting unit according to an embodiment of the present utility model.

Fig. 5 is a circuit diagram of an electronic load circuit of a battery detection unit according to an embodiment of the present utility model.

Fig. 6 is a schematic diagram of an actual measurement circuit of the battery detection unit according to the embodiment of the present utility model.

Fig. 7 is a schematic diagram of a CPU circuit of a converged communication unit of an embodiment of the present utility model.

Fig. 8 is a serial port communication circuit diagram of a converged communication unit in accordance with an embodiment of the present utility model.

Fig. 9 is a circuit diagram of a current collection of a converged communication unit in accordance with an embodiment of the present utility model.

Fig. 10 is a schematic circuit diagram of a commercial power detection unit according to an embodiment of the present utility model.

Fig. 11 is a circuit schematic of a communication interface unit according to an embodiment of the present utility model.

FIG. 12 is a flow chart of an embodiment of the present utility model.

Fig. 13 is a flow chart of a master control unit multithreaded acquisition service in accordance with an embodiment of the utility model.

Fig. 14 is a flowchart of a battery acquisition unit according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 11, the utility model provides an on-line monitoring device for a storage battery, which comprises a main control unit, wherein the main control unit is respectively in communication connection with a communication interface unit, a power supply unit, a display unit and a mains supply detection unit; the main control unit is connected with the convergence communication unit through the communication interface unit and collects the data of the battery detection unit. The main control unit controls the whole equipment system to work, and the main control unit comprises data acquisition, communication, control, intelligent data analysis and management functions and the like, and simultaneously completes communication interaction with an upper server. A main control unit can take over four groups of lead-acid storage battery packs in the station at the same time, and the number of the lead-acid storage battery packs can reach 400. The battery detection units are used for collecting voltage, temperature and internal resistance data of the storage battery, and the cascade summarized data are communicated through the convergence communication unit in a one-to-one mode (namely, one battery pack is correspondingly connected with one battery detection unit). The communication interface unit is connected with the output network port of the main control unit, is communicated with the web end service system through the network port of the main control unit, and is communicated with the convergence communication unit through a 485 interface to collect the data of the battery detection unit; the communication interface unit is connected with the mains supply detection unit at the same time and is used for collecting the data of the mains supply detection unit.

In some embodiments, the main control unit adopts FETMX6Q-C core board based on NXP company four-core ARM core-A9 architecture i.MX6Quad high-performance processor design, main frequency is 1GHz; the liquid crystal screen interface is provided with 1 path of RGB,2 paths of single 8 bit LVDS; the network port is provided with 1 path of 10/100/1000Mbps self-adaptive interface, and the connection mode is RJ45; 5-path serial port UART; a 2-way USB interface; the power supply inputs DC12V.

In some embodiments, the main control unit is connected with the 7 inch liquid crystal screen of the display unit through the LVDS interface P18, the connection form is 28P spacing 2.0 ox horn seat package, the model G070Y2-L01 brand Qimei liquid crystal screen is adopted, the LVDS bus is connected with the LVDS CONNECTOR interface on the back of the liquid crystal screen, and the connection form is 20P spacing 1.0 package. And packaging the touch panel into an XH2.54 white socket through a mainboard P20, providing LCD_BLACK for providing backlight power for the liquid crystal screen, and finally accessing an AMT touch screen AD-9545-B1 through a mainboard P19 interface, thereby realizing a touch operation function.

In some embodiments, the main control unit peripheral RS232 communication interface P24 corresponds to pins 1,3, and 5, and is respectively TXD, RXD, and GND, and the connection mode is that the ox horn socket adopts a gray bus to perform communication connection with the communication interface unit, and the connection mode is to the communication interface unit interfaces RS200/1,2, and 3. Thereby realizing the communication of the communication interface unit and being used for collecting the temperature and humidity signals in the equipment and receiving the data of the commercial power detection unit; the corresponding pins 17,18,19 and 20 of the external 485 communication interface P23 of the main board are respectively RS485_UART2_B, RS485_UART2_A, RS485_UART3_B and RS485_UART3_A. The connection mode is that the ox horn seat is connected with the communication interface unit by adopting a gray flat cable to the interface J10 of the communication interface unit, so that a 485 communication link from the main board to the communication interface unit is realized. The main control unit peripheral Ethernet interface P26 is connected with the communication interface unit and is connected with the communication interface unit P26. Therefore, the main control unit is connected with the communication link of the WEB end service system, and the real-time data and the alarm information are uploaded to the WEB end service system in real time for display and storage.

In some embodiments, the pins P16 corresponding to the DI output ports P16 of the main control unit are DO10, DO9, DO8 and DO7 respectively, the connection type ox horn seat is connected with one end of an indicator lamp installed on the front panel of the chassis by adopting an ash flat cable, the indicator lamp HBGQ12T-D/J/5V/G and the indicator lamp HBGQ12T-D/J/5V/R respectively correspond to the indicator lamp, and the anodes of the pins at the other end of the indicator lamp are connected into the pins 2,4,6 and 8 of the main control unit P16 of the ISO5V_B together. Thereby realizing the display of four states of equipment operation, alarm, mains supply and communication.

In some embodiments, referring to fig. 11, the communication interface unit performs data interaction with the mains supply detection unit through the serial port RS232 scheduled by the CPU chip stm32F030F4, samples the three-phase voltage state of the mains supply, and determines the mains supply state in real time through sampling the change of the high-low level signal of the pin A1B1C1 output by the mains supply detection unit. Meanwhile, the CPU performs temperature detection through a DS18B20 temperature sensor, transmits the acquired TEMP temperature value to a PB1 pin of the CPU, and tests the ambient temperature; the humidity sensor HS1101 humidity-sensitive capacitor is used for measuring a humidity signal, the TLC555 circuit is used for oscillating to generate a frequency corresponding to the relative humidity, the HUMI signal is transmitted to the PA1 pin of the CPU, the frequency is measured in a counting mode of the CPU, the relative humidity value is obtained through table lookup, and the environmental humidity is tested. The communication interface unit supports MODBUS-TCP protocol to access the web-side service system through a network port for synchronous online monitoring and use, a control protocol is newly added, and a more flexible and easily-expandable JSON structure is adopted for protocol development; meanwhile, the addition of a new protocol is supported, and development is required according to the accounting specification of the acquisition service.

In some embodiments, the battery detection unit uses the MSP430I2041TPW chip of TI as the processor. The UART interface of the processor is isolated by adopting a TL185 optocoupler circuit. The method comprises the steps of using a detected storage battery as a power supply, connecting an electronic load loop in parallel with two ends of the storage battery as an alternating current excitation signal generation circuit, connecting a current detection resistor in series with the electronic load loop to detect the current of the electronic load loop, additionally leading out voltage signal feedback lines at two ends of the storage battery to measure the voltage at two ends of the storage battery, and connecting a negative electrode temperature sensor of the storage battery to the negative electrode of the storage battery to measure the temperature of the negative electrode of the storage battery.

In the battery detection unit, after the voltage signal fed back by the voltage signal feedback line passes through a direct current coupling path and an alternating current coupling path of the sampling circuit respectively, the voltage signal is divided into a direct current coupling signal and an alternating current coupling signal, wherein the direct current coupling path is divided by resistors R23 and R25 and then is input into an AD sampling port of the MCU, and the alternating current coupling path is divided by coupling capacitors C19 and R28 and then is input into the AD sampling port of the MCU (see FIG. 4). After passing through an analog switch controlled by a singlechip MCU, the two coupling signals are transmitted to a differential AD channel of the MCU in a time-sharing manner; after the MCU analyzes the direct current coupling signal, the alternating current coupling signal, the current detection resistance signal and the temperature sensor signal, uploading the analysis result to the convergence communication unit through the UART or the wireless unit; the LED double-color indicator lamp is adopted, the LED lamp displays green color in a normal standby state, and the LED lamp displays red color in a measurement working state. The control signals led_green and led_red pins of the LED bi-color indicator are directly connected to P27, P28 of MCU MSP430I2041 (see fig. 3).

In some embodiments, the battery detection unit is connected to the storage battery in a 4-wire manner, the loop formed by +12v1 and VS-is used as an electronic load loop to generate the excitation signal, and the loop formed by +12v0 and GND1 is used as a voltage signal feedback loop for voltage measurement (see fig. 6). The storage battery negative electrode temperature sensor is bound with the negative electrode cable, and is arranged at the negative electrode of the storage battery.

In some embodiments, the electronic load loop of the battery detection unit adopts R11 as a fixed load resistor, and generates an ac constant current signal by controlling the on-off of the MOS U6, and the self-recovery fuse F2, the MOS U8 and the diode D2 are protection circuits thereof. D2 mainly plays a role in clamping voltages at two ends of the U8, the U8 turns off a load loop when the circuit board power supply is reversely connected and powered on, and the self-recovery fuse F1 turns off an electronic load loop when the current is overlarge. The self-recovery fuse F2 is connected to one end of the load resistor R11, the other end of the load resistor R11 is connected to the D electrode of the MOS tube U6, the S electrode of the MOS tube U6 is connected with the S electrode of the MOS tube U8, and the D electrode of the MOS tube U8 is connected with the diode D2 (see FIG. 5).

In some embodiments, when the battery detection unit is used for detecting a current value, a current detection resistor is connected in series in the electronic load loop, and in order to ensure measurement accuracy, the measured current needs to be calibrated by using a digital multimeter alternating current gear under the state of applying an excitation signal. The digital multimeter reads the average value of the alternating current, and the value multiplied by 2 is the peak value of the current signal. Because the peak value of the current peak designed in the embodiment is 2.0A plus or minus 0.5A, when the MCU detects the current above 2.6A, the MCU reports and records the current overrun alarm in the off-chip memory of the main control unit.

In some embodiments, when the battery detection unit detects the voltage, the voltage at the positive and negative ends of the storage battery is fed into the direct current coupling channel and the alternating current coupling channel through the voltage feedback line. The direct current coupling channel is used for detecting output voltage values at two ends of the storage battery, and the alternating current coupling channel is used for measuring the internal resistance of the storage battery in a matched mode with the current detection resistor. If the voltage at the two ends of the storage battery is detected to be out of limit in the detection process, alarming is carried out, and alarming parameters are recorded.

In some embodiments, when the battery detection unit detects temperature, collecting TEMP point voltage, calculating the resistance value of a thermistor in the battery negative electrode temperature sensor at the moment, and then, according to a resistance value table of the thermistor, detecting the temperature value on an actual battery negative electrode post by a table look-up method; see fig. 5-6 for specific circuit diagrams and fig. 14 for specific flow diagrams. If the temperature of the storage battery is found to exceed the limit in the detection process, alarming is carried out, and alarming parameters are recorded.

The convergence communication unit, see fig. 7, the cpu adopts STM32L476RCT6 low power consumption device, packaged as LQFP64, 256KB FLASH,128K RAM,12 bit DAC and 16 bit ADC,3+2 path UART; the unit mainly realizes the data convergence packaging uploading function with the battery detection unit, and the whole group current collection function of the storage battery. Firstly, a CPU is in communication connection with a battery detection unit output interface CN1 through a PC10 port and a PC11 port to a J4 port, and is designed to adopt an RJ11-4 core socket package with two ends connected with a 4-core crystal head telephone line, wherein UART interface pins 1-4 are defined as GND, TXD, RXD, GND; secondly, data of the battery detection unit are sent to a CPU through a UART serial port to carry out data statistics; the standard MODBUS protocol is adopted, the standard MODBUS protocol is converted into an RS485 signal through a U15-MAX3485ESA chip, and the RS485 signal is sent to a communication interface unit through a J3 port of a convergence communication unit, and the specific reference is made to FIG. 8. Finally, the CPU realizes the collection function of the whole group of current of the storage battery through the peripheral of the 16-bit ADC of the PC0 port and the U18 OPA2188AID chip, and the pins 1,2,3 and 4 correspond to VS+12V, VS-12V, AIN0 and GND signals through the 4P terminal with the green terminal spacing of 3.96mm and are connected to a current sensor to realize the real-time sampling and the return of current data to the CPU, and particularly, the CPU is shown in FIG. 9.

And the mains supply detection unit is used for detecting the state of the mains supply of the station in real time, and sending a state signal to the communication interface unit when the mains supply is abnormal. Referring to fig. 10, firstly, an ac power supply ABCN signal is introduced through a 5.08MM interface between green terminals of a unit X1, an ac signal is subjected to half-wave rectification through a capacitor C100, a resistor R100 and diodes D100 and D103, filtered into a dc signal through the capacitor C103, stabilized by R103 and D106, limited by the resistor R106 and isolated by a U100 optocoupler P521; when a voltage signal is input, the optocoupler is conducted, and a low level is output; when no voltage signal is connected, the optocoupler is not conducted, and a 3.3V high-level signal is output. Specifically, an ac electrical signal is connected to one end of the capacitor C100, one end of the capacitor C100 is connected to one end of the resistor R100, one end of the resistor R100 is connected to the positive end of the diode D100, and is connected to the negative end of the diode D103, the positive end of the diode D103 is connected to one end of the capacitor C103, the other end of the capacitor C103 is connected to the negative end of the diode D100, and is connected to one end of the resistor R103, the other end of the resistor R103 is connected to the negative end of the diode D106 and one end of the resistor R106, the other end of the resistor R106 is connected to the positive end of the U100 optocoupler P521, the optocoupler P521 is turned on when a voltage signal is input, and a low-level signal is output.

The power supply unit adopts a power supply module of a finished product, and belongs to the direct use of finished product purchase. After the power input is connected with AC220V, the output end can output DC+5V, GND, DC+12V and GND, which respectively provide DC+12V for the main control unit and DC+12V, DC+5V and GND for the communication interface unit.

The working process of the utility model is as follows:

in the embodiment, the main control unit adopts QT4.8 version software under a Linux system, compiles language C++, and a database Sqlite3, after the power supply unit is electrified, the main control unit realizes the work control flow of the whole equipment, defaults to enter a real-time monitoring state, acquires relevant real-time data through a sensor and a communication interface unit on the main control unit, displays the relevant real-time data on a local liquid crystal screen, and sends the relevant real-time data to the WEB end service system on a network at regular time; and comparing each item of data with an alarm threshold set by a user, and outputting a state or alarm information. The main control unit is connected with the communication interface unit and is connected with the convergence communication unit through the communication interface unit, so that the data acquisition of the voltage, the internal resistance and the temperature of each storage battery is monitored in real time. The main control unit displays the acquired data through the display unit, so that real-time monitoring and displaying are realized; the main control unit is in communication connection with the mains supply detection unit, so that the detection of the mains supply state of the machine room is realized, and a feedback signal is transmitted to the main control unit, so that the warning of the mains supply is realized; the main control unit uploads the acquired data to the WEB service system through the network interface, so that the remote monitoring control function of the WEB end service system is realized. See fig. 12-14 for specific flow.

In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims (10)

1. The storage battery on-line monitoring equipment is characterized by comprising a main control unit, wherein the main control unit is respectively in communication connection with a communication interface unit, a power supply unit, a display unit and a mains supply detection unit; the main control unit is connected with the convergence communication unit through the communication interface unit; the convergence communication unit is connected with the storage battery through the battery detection unit; the communication interface unit is connected with the mains supply detection unit.

2. The on-line monitoring device for storage battery according to claim 1, wherein the main control unit peripheral RS232 communication interface P24 is connected to the communication interface unit interface RS200; the main control unit mainboard is externally provided with a 485 communication interface P23 which is connected to a communication interface unit interface J10; the main control unit peripheral Ethernet interface P26 is connected with the communication interface unit.

3. The on-line monitoring device for storage batteries according to claim 1, wherein the communication interface unit is connected with the mains supply detection unit through a CPU chip scheduling serial port RS 232; the CPU chip is connected with a temperature sensor and a humidity sensor; and a TLC555 circuit is arranged between the CPU chip and the humidity sensor.

4. The on-line monitoring device of claim 1, wherein the battery detection unit comprises an electronic load loop and a voltage signal feedback line, the electronic load loop being connected in parallel with two ends of the battery; the two ends of the storage battery are connected with a sampling circuit of the battery detection unit through a voltage signal feedback line; and the negative electrode of the storage battery is connected with a battery negative electrode temperature sensor of the battery detection unit.

5. The on-line monitoring device for a storage battery according to claim 4, wherein the electronic load circuit uses a resistor R11 as a fixed load resistor, the self-recovery fuse F2 is connected to one end of the load resistor R11, the other end of the load resistor R11 is connected to the D pole of the MOS tube U6, the S pole of the MOS tube U6 is connected to the S pole of the MOS tube U8, and the D pole of the MOS tube U8 is connected to the diode D2.

6. The on-line monitoring device for the storage battery according to claim 4, wherein the sampling circuit comprises a direct current coupling path and an alternating current coupling path, wherein the direct current coupling path is connected to an AD sampling port of the MCU through voltage division of resistors R23 and R25, and the alternating current coupling path is connected to the AD sampling port of the MCU through voltage division of coupling capacitors C19 and R28; the MCU is connected to the convergence communication unit through the UART and/or the wireless unit.

7. The on-line monitoring device for a storage battery according to claim 1, wherein the CPU of the convergence communication unit is in communication connection with the battery detection unit output interface CN1 through a PC10 port, a PC11 port to a J4 port; the convergence communication unit is connected with the communication interface unit through an RS485 communication interface J3; and a CPU of the convergence communication unit is connected with a U18 chip through a PC0 port 16-bit ADC peripheral.

8. The on-line monitoring device for a storage battery according to claim 1, wherein the commercial power detection unit is connected to an ac power supply through a green terminal interface of the unit X1, and then connected to one end of a capacitor C100, one end of the capacitor C100 is connected to one end of a resistor R100, one end of the resistor R100 is connected to the positive end of a diode D100, and simultaneously connected to the negative end of a diode D103, the positive end of the diode D103 is connected to one end of the capacitor C103, the other end of the capacitor C103 is connected to the negative end of the diode D100, and then connected to one end of a resistor R103, the other end of the resistor R103 is connected to the negative end of a diode D106 and one end of the resistor R106, and the other end of the resistor R106 is connected to the positive end of a U100 optocoupler P521.

9. The on-line monitoring device of claim 1, wherein the main board of the main control unit is a FETMX6Q-C core board.

10. The on-line monitoring device for a storage battery according to claim 1 or 9, wherein a main board of the main control unit is connected with an LVDS connection interface of a liquid crystal screen of the display unit through an LVDS interface P18; the P20 interface of the mainboard is packaged into an XH2.54 white socket; and the mainboard P19 interface is accessed to the AMT touch screen.

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