KR19990000594A - Accumulator battery monitoring device - Google Patents

Abstract

The present invention provides a battery monitoring device for monitoring a remote battery, and a control terminal that gives a control command to the battery monitoring device and communicates with the battery monitoring device to give a control command to the battery monitoring device and to notify the controller. An automatic battery monitoring device comprising a receiving remote control terminal, wherein the battery monitoring device controls a battery monitoring device in communication with a control terminal or a remote control terminal, and a cell connection board connected to a cell of the battery and receiving information thereof. It consists of a board, a back board connecting the signal between the cell connection board and the control measurement board, and a power supply for supplying power.

Therefore, it is possible to measure by connecting up to 384 batteries, and it can measure high voltage up to 430V, and the error rate is stable within 0.3% because it measures the voltage across the cell as it is.

Description

Accumulator battery monitoring device

1 is a system configuration to which the present invention is applied,

2 is a functional block diagram of a battery automatic monitoring device to which the present invention is applied;

3 is a board mounting diagram of the battery monitoring device of the present invention,

4 is a front view of a storage battery monitoring device of the present invention.

[Industrial use]

The present invention relates to a battery automatic monitoring device, and to a device for monitoring a battery located in a remote location.

In particular, the present invention automatically measures the voltage and voltage fluctuations of the individual batteries (batteries) constituting the rectifier and the uninterruptible power supply (UPS) among the environmental monitoring targets in the communication station, and the results are transmitted to the remote control terminal and the transmission and reception function. It relates to the implementation of a battery automatic monitoring device (CAMS) that can be performed.

Conventional Technology and Its Problems

With the rapid development of information and communication technology, new communication services are being provided. Various communication equipments are developed, constructed and operated to provide such communication services, and communication equipments are installed and operated and maintained in communication companies. In such a situation, the telecommunication service provider is constructing a device that can reduce operating costs, efficiently manage telecommunications companies, and remotely monitor and control the environment of telecommunications companies.

In addition, the most important issue in the operation of communication equipment is the stable power supply of exchange stations, including unmanned stations operating to provide stable communication network services. As the number of uninterruptible power systems and rectifiers in exchanges increases due to the expansion of service networks, manual monitoring of battery conditions may lead to waste of manpower and may not prepare for sudden power outages. In addition, in terms of network management, it is necessary to monitor the power and environment of each country's battery, including storage batteries, in an integrated network management system that can monitor the operation status of all exchanges.

Based on this necessity, the existing battery automatic monitoring device measures the voltage of total voltage up to -48V for 24 series connected batteries.The measuring method also receives the cell voltage and distributes the voltage at a constant rate. It selects a cell and amplifies the signal, so it has an irregular error rate of 0.2% to 1.5%.

[Problems that the invention tries to solve]

Therefore, this error is a big difficulty in operating a communication system. In addition, there is a need for a device for monitoring the battery from a remote location for efficient operation.

[Means for solving the problem]

In order to solve the above problems, the present invention provides a battery monitoring device for monitoring a remote battery, a control terminal for giving a control command to the battery monitoring device, and communicating with the storage monitoring device. An automatic battery monitoring device comprising a remote control terminal for giving a control command to and receiving a notification thereof, wherein the battery monitoring device includes: a cell connection board connected to a cell of the battery and receiving information thereof; and the control terminal or the remote control terminal. And a control measuring board for controlling the battery monitoring device in communication with the battery, a back board connecting a signal between the cell connection board and the control measuring board, and a power supply unit for supplying power.

EXAMPLE

Referring to the embodiments of the present invention in detail with the drawings as follows.

1 shows a system operation to which the present invention is applied. This system is a battery monitoring device that monitors batteries, a control terminal that controls and commands them, and a communication device that connects the remote control terminal that monitors and commands the battery automatic monitoring device at a remote site, and the remote control terminal and battery monitoring device. It consists of.

The control terminal and the remote control terminal are composed of a normal personal computer (PC) or workstation and may be configured as dummy terminals. Of course, when the dummy terminal is configured, the control function should be placed in the battery automatic detection device. These control terminals directly control the battery monitoring device through various control commands, and report the voltage value measured at the request of the monitoring control device in whole or card unit. The communication method with the control terminal of the battery monitoring device has a unique protocol. use.

The remote control terminal and the battery monitoring device are connected by a communication device, and are connected through a modem. If the line connecting them is a public line such as a telephone network, a modem with dial-up function should be used.

The battery monitoring device measures the voltage across each cell and collects and analyzes the measured data by communicating with RS-232C or modem to the control terminal of itself and the remote and controls the battery monitoring device using the control terminal. Batteries can only measure cells that can output less than 5V and can measure cell voltages up to 192 in series. The maximum voltage is 480V when the cell voltage is 2.5V. The maximum capacity is 384 (two sets of 192) and 384 cell voltages can be measured every minute. The error rate is accurate to less than 0.25% and stable measurement is possible even in the harsh environment by the noise canceling circuit of the cell connection board.

Automatic battery monitoring system is divided into normal time and discharge time. The measurement cycle, data analysis and application method are also applied accordingly. Normally, the cell voltage and total voltage are always monitored to monitor the failure of the battery that generates an alarm in case of power failure or goes beyond the set value. It collects and analyzes the cell voltage data for each time during discharging, and determines the defectiveness of the cell in advance.

2 is a functional block diagram of a system to which the present invention is applied and includes a control measurement board (CMM), a cell connection board (CIM), a power supply unit (PSM), and a back board (CMBB).

CMM is the control board of battery monitoring device and is in charge of overall control of the device and communication with external equipment. As a detailed control function, CPU and CPU peripheral circuit, address reading part, device address part, memory part, communication port part, bus connection part, A It consists of the / D converter, analog switch, and board selector. The CPU and the CPU peripheral circuit are composed of peripheral circuits for driving the CPU, such as a reset of the central controller and the central controller. The address decoding part is for selecting the device controlled by the CPU. The device address part provides a unique number of the device to distinguish several CAMSs connected to the control terminal, and compares the device addresses when exchanging messages with the monitoring control terminal. Only messages that fit will be decrypted and received. The memory unit is a block in which all driving programs of the CAMS are registered, and are in charge of a function of measuring and storing the voltage value of the battery. The communication port unit is a block connected to the control terminal and functions to send and receive messages. The bus connection unit is responsible for the bus connection function for address and data exchange between the control and measurement module and the cell interface module used in CAMS equipment. All buses are connected to the buffer. The A / D converter converts the battery voltage, which is an analog value, into a discrete value for storing in the memory. The A / D converter uses an A / D converter with 12-bit resolution to increase accuracy. The analog switch unit is responsible for selecting analog signals of up to 16 cell interface modules connected to the CAMS. The board selector is an address selector for controlling the cell access module connected to the CAMS and can control up to 18 cell access modules.

The CIM is a board that connects cells and can accommodate 24 cells per board and up to 16 board mounts. Both terminals of the cell are input to the cell connection part and the switch part via the back board. The cell connection part is a circuit to protect the CIM from overvoltage or other bad signals. The switch part selects the voltage of both terminals of the cell to be measured under the control of the CMM.

The stabilizer is a circuit that removes various noises that may occur at both terminals of the cell and uses a low pass filter (LPF). The signal through the stabilizer is converted into digital data through the analog switch of the CMM module. The buffer is a circuit through which the CMM passes data and address buses and control signals for controlling the CIM. The buffer controls the relay so that the address distribution unit can select a cell to measure under the control of the CMM.

The isolation unit inputs the signals of both ends of the battery cell input from the cell connection unit, and isolates the selected battery signal between the battery and the battery monitoring device under the control of the cell selector and outputs the signal to the stabilization unit. The isolation voltage is above DC 450V.

The display unit outputs the board state and analyzes whether it is normal or error by software to turn on or off the LED (Light Emitting Diode).

The data address buffer is responsible for the connection of signals input from the control measurement board.These address buses U55, data bus U53, read, write, reset, and module enable (U54) signal.

The address allocator separates the addresses to select the cell to be measured, pauses, and displays a normal error.

CMBB is a channel that connects signals between boards. Power from the power board is also input to the CMM and CIM through the back board.

PSM receives + 48V input and generates and supplies various kinds of power required for battery monitoring system. There are three types of boards: +5, +12, and -12 volts.

Figure 3 shows the location of each module to be mounted in the battery monitoring device, PSM, CMM is mounted one by one, it is possible to extend the CIM according to the number of batteries and up to 16 can be mounted.

4 is a front view of the battery monitoring apparatus.

Each module has LED to indicate normal / error, and power board is equipped with power switch and CMM is equipped with re-operation switch, and each board has a set screw at the top and bottom to prevent hernia from impact or shaking. do.

[Effects of the Invention]

Conventional battery automatic monitoring device measures the voltage of total voltage up to -48V for 24 series connected battery.Measurement method also receives cell voltage, divides the voltage by a certain ratio, and then selects the cell to measure. In contrast, the device of the present invention has an irregular error rate of 0.2% to 1.5%, whereas the device of the present invention can measure up to 384 batteries, and can measure high voltages up to 430V. The error rate is stable within 0.3% because it measures the voltage across the cell as it is and adds a noise reduction circuit.

Claims (1)

A battery monitoring device for monitoring a battery in a remote state, a control terminal that gives a control command to the battery monitoring device and receives a notification thereof, and communicates with the battery monitoring device to give a control command to the battery monitoring device and receive a notification about the battery monitoring device; In the storage battery automatic monitoring device consisting of a control terminal, The battery monitoring device includes: a cell connection board connected to a cell of a battery and receiving information thereon; a control measurement board for controlling the battery monitoring device by communicating with the control terminal or a remote control terminal; and the cell connection board and the control. Power supply for supplying power and back board to connect signals between measuring boards Battery automatic monitoring device, characterized in that configured.