CN205507041U - A No Address Modular Battery Detection System - Google Patents

Abstract

The utility model discloses an addressless modular battery detection system, which comprises a plurality of battery detection units serially connected by telephone lines, the communication control output end of the previous battery detection unit is connected with the communication control input end of the next battery detection unit , the battery detection unit at the beginning end is connected to the host computer for remote monitoring, and the communication control input end of the battery detection unit at the beginning end is suspended. Implementing the battery detection system of the utility model has the following beneficial effects: it can realize the non-address modular battery detection, the construction is simple and convenient, the debugging and maintenance workload is small, the cost is low, and it is beneficial to the large-scale application of engineering.

Description

A No Address Modular Battery Detection System

technical field

The utility model relates to the field of battery detection, in particular to an addressless modular battery detection system.

Background technique

With the popularization of network technology and the needs of big data analysis, the construction of data room has developed rapidly in all walks of life. It is mainly composed of standard modules such as IT core equipment, uninterruptible power supply, cooling system, rack and remote monitoring system. In order to ensure the uninterrupted power requirements of the equipment in the data center, the uninterruptible power supply provides a reliable energy guarantee for the data center. The backup reserve energy of the uninterruptible power supply is the battery, which plays the most critical role in ensuring uninterrupted power supply. Once the mains power fails, the battery immediately passes through the UPS equipment to convert the battery's electric energy into AC power for the equipment in the computer room, ensuring data Uninterrupted power consumption of equipment. The quality of the storage battery directly affects the quality of uninterrupted power supply in the data center. Therefore, online monitoring of the storage battery becomes very important. At present, there are many battery testing products on the market, and the technical level of each manufacturer is uneven, and the product performance is also quite different. After analysis, there are still some deficiencies in the engineering application of battery testing products on the market, which are mainly reflected in the following aspects.

1. At present, the address of the battery needs to be set, and the workload of construction and debugging is heavy. Most of the battery detection modules adopt a modular structure. Each battery is equipped with a battery detection module to detect battery parameters. The current battery detection modules need to set the address one-to-one through the RS485 port first. However, there are a large number of batteries in the big data center, and the number of batteries is as many as tens of thousands. It is often found that the data cannot be collected due to the wrong address setting during the debugging process. However, due to the large number of batteries, it takes a huge workload to check whether the address is correct. Often, a wrong address of a battery detection module will cause all batteries on the RS485 bus to be reset. Detecting the address of the module is a waste of time.

2. It is also inconvenient to maintain in the later stage. If a battery detection module needs to be maintained after it is damaged, it is necessary to know the original address information, and the address must be set before it can be connected to the acquisition system.

3. At present, the battery detection module needs an external 12V or 24V power supply, which is inconvenient to connect with the host computer, and the contact resistance between the connection line between the battery detection modules and the socket is prone to voltage loss, resulting in the battery detection module at the end of the RS485 bus Low voltage, unable to communicate.

To sum up, the disadvantages of battery detection modules currently on the market are: they cannot realize addressless modular battery detection, resulting in complex construction, heavy debugging and maintenance workload, high cost, and are not conducive to large-scale application in engineering.

Utility model content

The technical problem to be solved by the utility model is that, in view of the defects of the prior art that the above-mentioned non-address modular battery detection cannot be realized, the construction is complicated, the debugging and maintenance workload is large, the cost is high, and it is not conducive to the large-scale application of projects, a The invention provides a battery detection system capable of realizing no-address modularized battery detection, simple and convenient construction, small commissioning and maintenance workload, low cost, and favorable for large-scale application in engineering.

The technical solution adopted by the utility model to solve the technical problem is: to construct a modular battery detection system without addresses, including multiple battery detection units connected in series by telephone lines, the communication control output terminal of the previous battery detection unit and the next The communication control input terminal of a battery detection unit is connected, the battery detection unit at the beginning end is connected with the host computer for remote monitoring, and the communication control input end of the battery detection unit at the beginning end is suspended.

In the addressless modular battery detection system described in the present invention, the battery detection unit includes an MCU, a battery parameter acquisition module, an isolated communication circuit, a communication control input circuit, a communication control output circuit, an input socket, an output socket and a power supply circuit, the battery parameter collection module is connected to the MCU for collecting battery parameters, the input socket is connected to the output socket of the previous battery detection unit, and the input socket is also connected to the MCU through the isolated communication circuit The input socket is also connected to the MCU through the communication control input circuit, and the MCU is also connected to the output socket through the communication control output circuit, and the output socket and the input of the next battery detection unit The output socket is also connected to the input socket, and the power supply circuit is respectively connected to the MCU and the isolated communication circuit for supplying power to the MCU and the isolated communication circuit.

In the non-address modular battery detection system described in the present invention, the power supply circuit includes a first voltage stabilization circuit and a second voltage stabilization circuit connected to each other, and the first voltage stabilization circuit converts the battery voltage to meet the specified The first voltage for the operation of the MCU and power supply for the MCU, the second voltage stabilization circuit converts the first voltage into a second voltage that conforms to the operation of the isolated communication circuit, and supplies power for the communication isolation circuit .

In the non-address modularized battery detection system of the present invention, an LED indicator light is also included, and the LED indicator light is connected with the MCU to indicate battery operation, communication and health status.

In the non-address modularized battery detection system of the present invention, the first voltage stabilizing circuit includes a switching voltage stabilizing device for converting the battery voltage into the first voltage, and the second voltage stabilizing circuit The circuit uses a DC/DC isolation conversion module that converts the first voltage into the second voltage.

In the non-address modular battery detection system of the present invention, the MCU has its own A/D converter inside, and the battery parameters collected by the battery parameter collection module are transmitted to the A/D converter.

In the non-address modular battery detection system described in the present invention, the communication control input circuit includes a first photocoupler, a first resistor and a third resistor, and the first pin of the first photocoupler passes through The third resistor is connected to the second voltage, the second pin of the first optocoupler is connected to the input socket, the third pin of the first optocoupler is grounded, and the first optocoupler The fourth pin of the coupler is connected to the first voltage through the first resistor.

In the non-address modular battery detection system described in the present invention, the communication control output circuit includes a second photocoupler and a second resistor, and the first pin of the second photocoupler passes through the second The resistor is connected to the first voltage, the second pin of the second photocoupler is connected to the MCU, and the fourth pin of the second photocoupler is connected to the output socket.

In the non-address modular battery detection system of the present invention, the input socket is connected to the output socket of the previous battery detection unit through four lines, and the output socket is connected to the input socket of the next battery detection unit through four lines connect.

In the non-address modularized battery detection system of the present invention, the telephone line is an RS485 bus, and the battery parameters include battery voltage, internal resistance and temperature.

Implementing the addressless modular battery detection system of the present invention has the following beneficial effects: Since the battery detection units are connected in series through telephone lines, the communication control output end of the previous battery detection unit is connected to the communication control input end of the next battery detection unit , the battery detection unit at the beginning end is connected to the host computer for remote monitoring, and the communication control input terminal of the battery detection unit at the beginning end is suspended, it does not need to set the address for the battery detection unit, which reduces the workload, so it can realize the modular battery without address The detection and construction are simple and convenient, the workload of debugging and maintenance is small, the cost is low, and it is conducive to large-scale application in engineering.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of a battery detection unit in an embodiment of the addressless modular battery detection system of the present invention;

Fig. 2 is the circuit schematic diagram of the power supply circuit in the described embodiment;

Fig. 3 is a schematic circuit diagram of the connection between the communication control input circuit and the communication control output circuit and the MCU in the embodiment.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the embodiment of the non-address modular battery detection system of the present invention, the non-address modular battery detection system includes a plurality of battery detection units, and the plurality of battery detection units are serially connected by telephone lines, and the telephone lines can adopt RS485 bus, and the Among the multiple battery detection units, the communication control output terminal of the previous battery detection unit is connected to the communication control input terminal of the next adjacent battery detection unit, and the battery detection unit at the beginning end is connected with the host computer to realize remote monitoring. The communication control input terminal of the battery detection unit is suspended. It does not need to set the address of the battery detection unit, and the battery detection units are connected in series through the telephone line, which will reduce the cost. Since there is no need to set the address, its installation and maintenance will be relatively simple, and it can also reduce the size of the entire battery detection system. The volume, which has a broad application prospect in the battery monitoring of the data center.

Fig. 1 is a schematic structural diagram of the battery detection unit in this embodiment; in Fig. 1, the battery detection unit includes an MCU1, a battery parameter acquisition module 2, an isolated communication circuit 3, a communication control input circuit 4, a communication control output circuit 5, and an input socket 6 , output socket 7 and power supply circuit 8, wherein, MCU1 uses a high-performance microprocessor, which is the core of the battery detection unit, and mainly realizes functions such as obtaining battery parameters collected by the battery parameter collection module, performing serial port communication management and display control. The battery parameter collection module 2 is connected to MCU1, specifically directly connected to the A/D input port of MCU1, for collecting battery parameters. The battery parameters include battery voltage, internal resistance and temperature. MCU1 has its own A/D conversion device (not shown in the figure), and the battery parameters collected by the battery parameter collection module 2 are sent to the A/D converter. In this embodiment, the isolated communication circuit 3 adopts optocoupler isolation to realize the RS485 communication function, and is mainly used to connect with the upper computer to realize the remote monitoring function. The communication control input circuit 4 receives the output signal of the previous battery detection unit to realize the cascade signal transmission between the battery detection units.

In this embodiment, the input socket 6 and the output socket 7 are mainly used for communication with the host computer and cascade control with the next battery detection unit. The input socket 6 is connected to the output socket of the previous battery detection unit, the input socket 6 is also connected to the MCU1 through the isolated communication circuit 3, the input socket 6 is also connected to the MCU1 through the communication control input circuit 4, and the MCU1 is also connected to the MCU1 through the communication control output circuit 5 The output socket 7 is connected, the output socket 7 is connected with the input socket of the next battery detection unit, the output socket 7 is also connected with the input socket 6, the power supply circuit 8 is connected with the MCU1 and the isolation communication circuit 3 respectively, and is used for MCU1 and the isolation communication circuit 3 power supply. It is worth mentioning that in this embodiment, the input socket 6 is provided with four lines, which are respectively named DI, RS485+, RS485- and GNDC, and the output socket 7 is also provided with four lines, which are respectively named DO, RS485+ , RS485- and GNDC, the input socket 6 is connected to the output socket of the previous battery detection unit through four lines (DI, RS485+, RS485- and GNDC), and the output socket 7 is connected to the output socket of the previous battery detection unit through four lines (DO, RS485+, RS485- and GNDC) The input socket connection of the next battery detection unit.

The utility model realizes the non-address communication principle as follows:

The first step, in this embodiment, specifically, multiple battery detection units can be connected to one RS485 bus, and two communication control signals are added between the battery detection units. The communication control output of each battery testing unit is connected to the communication control input of the next battery testing unit. The connection between the first battery detection unit (the battery detection unit at the beginning) and the host computer is a standard 2-wire RS485 interface, so the communication control input terminal of the first battery detection unit is suspended, and it is "1" level when suspended . When the power is first turned on, each battery detection unit returns to the default value, the communication control output terminal of each battery detection unit outputs "0" level, and the communication flag is set to the non-communication state.

In the second step, after the power is turned on, the communication control input terminal of the battery detection unit at the front is suspended at “1” level, and the signals of the communication control input terminals of other battery detection units are all “0” level. When the host computer sends a collection command, only the first battery detection unit can return the collected data. After the communication is completed, set the communication control output terminal of the first battery detection unit to "1" level, and set the communication flag of the first battery detection unit to the communication state.

In the third step, after the communication control input terminal of the second battery detection unit receives the "1" level of the communication control output terminal of the previous battery detection unit, only the first battery detection unit and the second battery detection unit are connected on the RS485 bus. The communication control input terminal of the battery detection unit is at "1" level, and the communication control input terminals of other battery detection units are at "0" level. When the upper computer sends a collection command, because the first battery detection unit has been marked as a communication state and does not return data, only the second battery detection unit returns the collected data on the RS485 bus. After the communication is completed, set the communication control output signal of the second battery detection unit to "1" level, and set the communication flag of the second battery detection unit to the communication state.

In the fourth step, repeat the acquisition process of the upper computer according to the third step until the last battery detection unit.

The fifth step, if the host computer sends three collection commands on the RS485 bus and there is no return data, it means that the battery detection unit on the RS485 bus has finished reading.

The sixth step, after reading the battery detection party members on the RS485 bus, the host computer sends a reset broadcast command on the RS485 bus, and each battery detection unit immediately resets to the default state after receiving the broadcast command: each battery detection unit The communication control output circuit outputs "0" level, and the communication flag of the battery detection unit is set to the non-communication state.

In this embodiment, after the above process is completed, the data collection of all battery detection units is completed once, and the data collection function of the battery pack is realized by repeating the above process.

In this embodiment, the battery detection unit does not need to set an address, and the battery detection unit is directly connected in series like building blocks. The host computer sends a unified collection command to read the data of a battery detection unit on a 485 bus. Simple construction, convenient engineering debugging and maintenance. There are only two RS485 communication lines to communicate with the host computer, no external power supply is required, the connection is simple and the application is convenient.

In this embodiment, the power supply circuit 8 includes a first voltage stabilizing circuit 81 and a second voltage stabilizing circuit 82 connected to each other. The first voltage stabilizing circuit 81 converts the battery voltage Vbat into a first voltage VCC1 that is in line with the operation of the MCU1, and supplies the voltage for the MCU1. For supplying power, the second voltage stabilizing circuit 82 converts the first voltage VCC1 into a second voltage VCC2 conforming to the operation of the isolated communication circuit 3 , and supplies power to the communication isolated circuit 3 .

In this embodiment, the battery under test is used for self-power supply, and low power consumption design must be carried out. MCU1, power supply circuit 8 and isolated communication circuit 3 all use low power consumption devices. For example: MCU1 and isolated communication circuit 3 use low-power devices powered by 3.3V, and MCU1 has an A/D converter, such as: MSP430 series, STM8L series, etc. Because MCU1 has its own A/D converter, no external devices are needed to collect battery parameters, which can effectively reduce the power consumption of VCC1.

FIG. 2 is a schematic circuit diagram of the power supply circuit in this embodiment. The first voltage stabilizing circuit 81 is self-powered by a battery. In order to reduce power consumption, in FIG. , with low power consumption and high power conversion efficiency. The second voltage stabilizing circuit 82 includes a DC/DC isolation conversion module U2. The DC/DC isolation conversion module U2 converts the first voltage VCC1 into a second voltage VCC2 for use by the isolation communication circuit 3 . DC/DC isolation conversion module U2 can choose B0303XT-1WR2 module, SMD installation, low power consumption, and simple application. After adopting the low-power device design scheme, the power consumption is low and has no impact on the battery itself. Due to the low power consumption design, it is self-powered by the tested battery and does not require an external power supply. The communication with the host computer is only connected with two RS485 copper core wires, which is convenient for engineering applications. The battery detection system uses commonly used components, which is convenient to purchase and low in total cost, and has a competitive advantage in battery monitoring in big data centers.

Fig. 2 is the schematic circuit diagram of the connection between the communication control input circuit and the communication control output circuit and the MCU in the present embodiment; the communication control input circuit 4 includes the first photocoupler ISO1, the first resistor R1 and the third resistor R3, the first The first pin of the photocoupler ISO1 is connected to the second voltage VCC2 through the third resistor R3, the second pin of the first photocoupler ISO1 is connected to the input socket 6, and the third pin of the first photocoupler ISO1 is grounded. The fourth pin of the first photocoupler ISO1 is connected to the first voltage VCC1 through the first resistor R1. The communication control output circuit 5 includes a second photocoupler ISO2 and a second resistor R2, the first pin of the second photocoupler ISO2 is connected to the first voltage VCC1 through the second resistor R2, and the second pin of the second photocoupler ISO2 Pin is connected with MCU1, and the fourth pin of the second photocoupler ISO2 is connected with output socket 7.

In this embodiment, the battery detection system further includes an LED indicator light 9, which is connected to the MCU1 and used to indicate battery operation, communication and health status, that is, to indicate the state of the battery.

In short, in this embodiment, the battery detection unit does not need to set an address, which is convenient for debugging, and has strong practicability and ease of use. The battery detection system is simple to connect, and only two RS485 communication lines are used to communicate with the host computer, without external power supply. The installation method is standardized, the telephone crystal head is used for connection, the wiring is standardized, the installation and disassembly are convenient, and the work efficiency is high. The cost of each battery test is a battery test unit and a telephone line, and the cost is low.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. a zero-address modular battery detecting system, it is characterised in that include the multiple batteries inspection using telephone wire concatenation Survey unit, the Control on Communication outfan of previous battery detection unit and the Control on Communication input of next battery detection unit Connecting, the battery detection unit at top is connected with host computer and remotely monitors, the communication of the battery detection unit at described top Control input unsettled.

Zero-address modular battery detecting system the most according to claim 1, it is characterised in that described battery detection unit Including MCU, battery parameter acquisition module, isolation telecommunication circuit, Control on Communication input circuit, Control on Communication output circuit, input Socket, accessory power outlet and power supply circuits, described battery parameter acquisition module is connected with described MCU, is used for gathering battery parameter, institute Stating input socket to be connected with the accessory power outlet of its previous battery detection unit, described input socket is also by described isolation communication Circuit is connected with described MCU, and described input socket is connected with described MCU also by described Control on Communication input circuit, described MCU It is connected with described accessory power outlet also by described Control on Communication output circuit, described accessory power outlet and its next battery detecting list Unit input socket connect, described accessory power outlet is also connected with described input socket, described power supply circuits respectively with described MCU and Isolation telecommunication circuit connects, for powering for described MCU and isolation telecommunication circuit.

Zero-address modular battery detecting system the most according to claim 2, it is characterised in that described power supply circuits include Interconnective first mu balanced circuit and the second mu balanced circuit, described first mu balanced circuit cell voltage is transferred to meet described MCU work the first voltage and power for described MCU, described first voltage is converted to meet institute by described second mu balanced circuit State the second voltage of isolation telecommunication circuit work and power for described communication isolation circuit.

Zero-address modular battery detecting system the most according to claim 3, it is characterised in that described first mu balanced circuit Including the switch voltage-stabilizing device for described cell voltage is converted to described first voltage, described second mu balanced circuit uses will Described first voltage is converted to the DC/DC of described second voltage and isolates modular converter.

Zero-address modular battery detecting system the most according to claim 2, it is characterised in that also include LED light, Described LED light is connected with described MCU, is used for indicating battery operation, communication and health status.

Zero-address modular battery detecting system the most according to claim 2, it is characterised in that the inside of described MCU is certainly Band A/D converter, the battery parameter of described battery parameter acquisition module collection is sent to described A/D converter.

Zero-address modular battery detecting system the most according to claim 3, it is characterised in that described Control on Communication inputs Circuit includes that the first photoelectrical coupler, the first resistance and the 3rd resistance, the first pin of described first photoelectrical coupler pass through institute Stating the 3rd resistance and connect described second voltage, the second pin of described first photoelectrical coupler is connected with described input socket, institute Stating the 3rd pin ground connection of the first photoelectrical coupler, the 4th pin of described first photoelectrical coupler is by described first resistance even Connect described first voltage.

Zero-address modular battery detecting system the most according to claim 7, it is characterised in that described Control on Communication exports Circuit includes the second photoelectrical coupler and the second resistance, and the first pin of described second photoelectrical coupler passes through described second resistance Connecting described first voltage, the second pin of described second photoelectrical coupler is connected with described MCU, described second photoelectrical coupler The 4th pin be connected with described accessory power outlet.

Zero-address modular battery detecting system the most according to claim 2, it is characterised in that described input socket passes through Article four, line is connected with the accessory power outlet of its previous battery detection unit, and described accessory power outlet is by four lines and its next electricity The input socket of pond detector unit connects.

Zero-address modular battery detecting system the most according to claim 2, it is characterised in that described telephone wire is RS485 bus, battery parameter includes the voltage of battery, internal resistance and temperature.