CN204633319U - Remote power accumulator cell charging and discharging protection system - Google Patents

Abstract

Remote power accumulator cell charging and discharging protection system, be made up of upper managing computer, super-charge super-discharge protective device two parts, it is characterized in that, upper managing computer is connected with super-charge super-discharge protective device PORT COM by Ethernet; Super-charge super-discharge protective device sample port is connected with direct current system batteries both positive and negative polarity, and control port is connected with batteries positive pole, DC bus+KM.Compared with prior art, the utility model has the following advantages: 1. effectively can prevent overcharging and excessively putting of storage battery, extend its useful life, also assures that the continuity that direct current system is powered simultaneously; 2. achieve the protecting control of the long-range discharge and recharge of storage battery, improve the real-time of battery protection, hurrying back and forth in the scene decreasing attendant, improves operating efficiency, saved a large amount of manpower and materials.

Description

Remote power accumulator cell charging and discharging protection system

Technical field

The utility model relates to a kind of remote power accumulator cell charging and discharging protection system, and it is applied to protection and the Long-distance Control that electric power system DC power supply storage battery prevents super-charge super-discharge.

Background technology

In electric power system; DC power supply provides direct current electricity consumption for control, signal, relaying protection, automatics and emergency lighting etc.; and storage battery is the core of whole direct current system; once go wrong, the thing followed is protection malfunctioning, switch failure, channel interrupt ... consequence is hardly imaginable.The great electric power accident caused because of storage battery problem in recent years happens occasionally, thus causes great economic loss.Storage battery is in running; often there will be super-charge super-discharge phenomenon; overcharge can cause battery dehydration, dry, thermal runaway; even explode; overdischarge will cause battery sulfuration, internal resistance increases and loses capacity; if can not get effective prevention and corntrol, super-charge super-discharge will make battery damage very soon, directly threaten the safe operation of electric power system.The technology such as existing battery inspection, equilibrium and activation, just to the monitoring of cell voltage and the maintenance of cell, overcharging and crossing of the batteries that cannot prevent the reasons such as such as charger is out of control, automatic lower electric control inefficacy from causing is put.Therefore, designing a kind of remote power accumulator cell charging and discharging protection system, is the current technical issues that need to address.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of remote power accumulator cell charging and discharging protection system.

The technical scheme in the invention for solving the technical problem is:

Remote power accumulator cell charging and discharging protection system, comprise the super-charge super-discharge protective device be connected with upper managing computer, it is characterized in that: described super-charge super-discharge protective device comprises microprocessor, ethernet interface circuit, voltage sensor, optocoupler OPT1, optocoupler OPT2, diode D1, diode D2, D.C. contactor S1 and D.C. contactor S2; An I/O mouth of microprocessor is isolated via light lotus root OPT1 and is connected D.C. contactor S1 control coil, another I/O mouth of microprocessor is isolated via light lotus root OPT2 and is connected D.C. contactor S2 control coil, the A/D mouth of microprocessor connects the output of voltage sensor, and microprocessor asynchronous communication mouth UART is connected with ethernet interface circuit HR911105A; The main contacts of D.C. contactor S1 and diode D1 form parallel circuits, the main contacts of D.C. contactor S2 and diode D2 form parallel circuits, be connected to after two parallel circuit in series between DC bus+KM and batteries positive pole, wherein the K end of diode D1 is for connecting DC bus+KM, and the K end of diode D2 is for connecting batteries positive pole; Voltage sensor one secondary input end connects batteries both positive and negative polarity.

Wherein, the LM3S6938 single-chip microcomputer that described microprocessor adopts Texas Instruments to produce; Light lotus root OPT1 and light lotus root OPT2, adopts the light coupling relay G3VM351G that Omron Corp produces; Ethernet interface circuit adopts network transformer/RJ45 interface chip, and model is: HR911105A; Voltage sensor adopts model to be WPE-DV electromagnetism modulation voltage transducer; Diode D1 and diode D2 model are MDA-110; The model of D.C. contactor S1 and D.C. contactor S2 is CZY1-63.

Compared with prior art, the utility model has the following advantages:

1. effectively can prevent overcharging and excessively putting of storage battery, extend its useful life, also assures that the continuity that direct current system is powered simultaneously;

2. achieve the protecting control of the long-range discharge and recharge of storage battery, improve the real-time of battery protection, hurrying back and forth in the scene decreasing attendant, improves operating efficiency, saved a large amount of manpower and materials.

Accompanying drawing explanation

Fig. 1 is the general frame of system;

Fig. 2 is the schematic diagram of super-charge super-discharge protective device.

Embodiment

As shown in Figure 1, native system comprises the super-charge super-discharge protective device be connected with upper managing computer.Connected mode is as follows: upper managing computer is connected with super-charge super-discharge protective device PORT COM by Ethernet; Super-charge super-discharge protective device sample port is connected with direct current system batteries both positive and negative polarity, and control port is connected with batteries positive pole, DC bus+KM.The course of work is as follows: super-charge super-discharge protective device gathers accumulator battery voltage by sample port real-time online; telemetry intelligence (TELINT) is uploaded again by Ethernet; upper managing computer carries out analyzing and processing to the data message received; as found, battery tension exceedes high/low limit value and occurs overcharging/crossing putting phenomenon; upper managing computer then sends remote control command by Ethernet immediately; make super-charge super-discharge protective device cut off the path between DC bus+KM and batteries positive pole by control port, avoid the mistake/charge less electricity of storage battery.

Upper managing computer is a computer having installed the accumulator cell charging and discharging remote protection control software utilizing VC language to work out, and it connects over ethernet, by Ethernet monitoring super-charge super-discharge protective device.More particularly, upper managing computer devises an accumulator cell charging and discharging remote protection control software vertical application, it is arranged in the corresponding computer connected over ethernet, by operation accumulator cell charging and discharging remote protection control software, super-charge super-discharge protective device distally sends remote control command, and receives the telemetry that super-charge super-discharge protective device uploads; So precisely, the key of upper managing computer is an accumulator cell charging and discharging remote protection control software vertical application utilizing VC language to work out loading in the computer that connected over ethernet.

As shown in Figure 2, super-charge super-discharge protective device comprises microprocessor, ethernet interface circuit, voltage sensor, optocoupler OPT1 and optocoupler OPT2, diode D1 and diode D2, D.C. contactor S1 and D.C. contactor S2.Described microprocessor adopts LM3S6938 single-chip microcomputer, it be Texas Instrument (TI) company provide first based on ARM ^?cortex ^tM32 level controllers of-M3, the in-chip FLASH of 256K, 64K on-chip SRAM, the A/D converter of 10 of 8 passages, inner integrated 10/100 Ethernet media interviews control (MAC) and physical layer (PHY), meet IEEE 802.3-2002 specification, its advantage has been third party's ICP/IP protocol stack compatible, can realize the ethernet terminal nodal function of single-chip; Optocoupler OPT1 in super-charge super-discharge protective device and optocoupler OPT2, adopts the light coupling relay G3VM351G of Omron Corp, has Phototube Coupling and power drive dual-use function; Ethernet interface circuit adopts network transformer/RJ45 interface chip, and model is: HR911105A; Voltage sensor adopts electromagnetism modulation voltage transducer, and model is: WPE-DV, and input 0-300V, export 0-5V, diode model is: MDA-110, rated current 110A, D.C. contactor model C ZY1-63, rated current 63A.Each part mentioned above connected mode is as follows: microprocessor I/O mouth is isolated via light lotus root OPT1 and connected D.C. contactor S1 control coil, another I/O mouth is isolated via light lotus root OPT2 and is connected D.C. contactor S2 control coil, microprocessor A/D mouth connects the output of voltage sensor, and microprocessor asynchronous communication mouth UART connects ethernet interface circuit HR911105A; D.C. contactor S1 main contacts and diode D1 parallel connection, S2 main contacts and diode D2 parallel connection, two parallel circuitss are connected between DC bus+KM and batteries positive pole after connecting again, and wherein diode D1 K holds and connects DC bus+KM, and diode D2 K holds and connects batteries positive pole; Voltage sensor one secondary input end connects batteries both positive and negative polarity, and secondary exports and directly connects microprocessor A/D mouth.The course of work is as follows: voltage sensor is that 0 ~ 5V secondary singal transmits microprocessor A/D mouth accumulator battery voltage isolated variable, microprocessor carries out sampling processing, draw accumulator battery voltage, telemetry intelligence (TELINT) is uploaded by Ethernet via ethernet interface circuit, judge whether accumulator battery voltage exceedes the high/low limit value of charge/discharge simultaneously, if transfinited, or receive the remote control command of upper managing computer transmission, microprocessor drives light lotus root OPT1(or OPT2 by I/O mouth) control D.C. contactor S1(or S2) cut off path between DC bus+KM and batteries positive pole, both the mistake of storage battery (or owing) charging can have been avoided, utilize the unilateral conduction of diode D1 and D2 simultaneously, in turn ensure that DC bus powered continuity.

Claims (2)

1. remote power accumulator cell charging and discharging protection system, comprise the super-charge super-discharge protective device be connected with upper managing computer, it is characterized in that: described super-charge super-discharge protective device comprises microprocessor, ethernet interface circuit, voltage sensor, optocoupler OPT1, optocoupler OPT2, diode D1, diode D2, D.C. contactor S1 and D.C. contactor S2; An I/O mouth of microprocessor is isolated via light lotus root OPT1 and is connected D.C. contactor S1 control coil, another I/O mouth of microprocessor is isolated via light lotus root OPT2 and is connected D.C. contactor S2 control coil, the A/D mouth of microprocessor connects the output of voltage sensor, and microprocessor asynchronous communication mouth UART is connected with ethernet interface circuit HR911105A; The main contacts of D.C. contactor S1 and diode D1 form parallel circuits, the main contacts of D.C. contactor S2 and diode D2 form parallel circuits, be connected to after two parallel circuit in series between DC bus+KM and batteries positive pole, wherein the K end of diode D1 is for connecting DC bus+KM, and the K end of diode D2 is for connecting batteries positive pole; Voltage sensor one secondary input end connects batteries both positive and negative polarity.

2. remote power accumulator cell charging and discharging protection system according to claim 1, is characterized in that, the LM3S6938 single-chip microcomputer that described microprocessor adopts Texas Instruments to produce; Light lotus root OPT1 and light lotus root OPT2, adopts the light coupling relay G3VM351G that Omron Corp produces; Ethernet interface circuit adopts network transformer/RJ45 interface chip, and model is: HR911105A; Voltage sensor adopts model to be WPE-DV electromagnetism modulation voltage transducer; Diode D1 and diode D2 model are MDA-110; The model of D.C. contactor S1 and D.C. contactor S2 is CZY1-63.