CN209247994U - Battery group open circuit on-line measuring device - Google Patents

Abstract

The utility model discloses a kind of battery group open circuit on-line measuring devices, including the heavy-duty diode being arranged between battery and charger, the anode connection battery of heavy-duty diode, cathode connects charger, D.C. contactor is additionally provided between battery and charger, D.C. contactor and heavy-duty diode Xiang Binglian, string is between the positive and negative cable of battery after one load is connected with a load-relay, device further includes electric current, voltage detection module, timing module, controller and alarm module, electric current, the output end of voltage detection module and timing module is connected with controller, controller output end respectively with alarm module, DC relay, load-relay is connected, electric current, voltage detection module is used to detect the electric current of battery, voltage, the output end of controller is connected with monitoring center, one power supply is device confession Electricity；The arrangement achieves the detection that battery pack open circuit, internal resistance exception, accumulator capacity reduce, stable structure, high reliablity.

Description

Battery group open circuit on-line measuring device

Technical field

The utility model relates to electric storage battery, in particular to a kind of battery group open circuit on-line measuring device.

Background technique

Battery is the important component of DC power-supply system in electric supply system, it is as DC power supply master It is responsible for and provides safe and stable, reliable electric power safeguard for electrical secondary system load in electric system, it is ensured that relay protection is led to Believe the normal operation of equipment.Therefore the stability of battery and it can be supplied to the actual capacity of load during discharge to ensuring The safe operation of power equipment has a very important significance.Running battery group is once opened a way, and is lost in alternating current Under electricity or other accident state, the backup power source of power supply system will face paralysis, cause equipment stoppage in transit and other great operation things Therefore.In recent years being widely used in electric system with valve controlled sealed lead-acid accumulator, the accident caused by accumulator failure It happens occasionally, or even kindling, whole station is caused to have a power failure.The battery group that battery of connecting is run, due to individual difference and healthy shape State is inconsistent, causes under same electric discharge and charging current, cell voltage is inconsistent, inevitably occurs under Individual cells performance Drop leads to battery pack open circuit failure, and single battery determines whole group accumulator property.If occurring AC fault or thing at this time Therefore necessarily will cause direct current output interruption, lead to the generation of major accident.We are improving battery performance, reduce maintenance work While amount, battery pack open circuit failure is detected how effective and rapidly, and is given warning in advance and had become the new of battery operation management Problem.At present other than the General Maintenances detection means such as proof discharge, survey end voltage internal resistance, a kind of energy on-line checkings The effective means of battery pack open circuit failure, therefore a kind of battery group open circuit on-line measuring device need to be studied.

Utility model content

In view of this, the purpose of the utility model is to provide a kind of battery group open circuit on-line measuring devices, on site The carrying load ability of automatic periodically on-line checking battery can find battery pack open circuit, internal resistance exception, accumulator capacity drop in time The problems such as low, can effectively avoid because accumulator failure bring equipment is stopped transport and the generation of other great interruption of services.

The purpose of this utility model is achieved through the following technical solutions:

Battery group is opened a way on-line measuring device, including the heavy-duty diode being arranged between battery and charger, The anode connection battery of heavy-duty diode, cathode connect charger, are additionally provided between the battery and charger straight Contactor, the D.C. contactor and heavy-duty diode Xiang Binglian are flowed, a load is gone here and there after connecting with a load-relay to be stored Between the positive and negative cable of battery, described device further includes electric current, voltage detection module, timing module, controller and alarm module, The output end of the electric current, voltage detection module and timing module is connected with controller, the controller output end respectively with announcement Alert module, DC relay, load-relay are connected, and electric current, voltage detection module are used to detect electric current, the voltage of battery, The output end of the controller is connected with monitoring center, and a power supply is device power supply.

Further, the power supply includes the DC/DC power adapter being connected in series and control switch, the input terminal of the power supply It is connected with DC bus.

Further, the input terminal of the controller is also connected with time delay module.

Further, it is described load with load-relay, electric discharge be spaced apart be connected in series after string battery positive and negative cable it Between.

Further, it is corresponded in described device and is equipped with opening at load, be equipped with radiator fan, the heat dissipation in the opening Fan is connected with controller.

The beneficial effects of the utility model are:

The battery group open circuit on-line measuring device of the utility model, timing module are periodically started by the setting period, are started Controller control D.C. contactor disconnects afterwards, and load-relay closure, due to the presence of diode, battery can not be filled at this time Electric busbar charging is equivalent to battery and logs off, and loads access battery group, and electric current, voltage detection module detect electric power storage Electric current, voltage after the group bringing onto load of pond the enough load currents of battery group energy band and keep voltage slowly to decline under normal circumstances, If battery has open circuit or capacity exception or internal resistance is bigger than normal, will appear accumulator voltage is rapidly reduced, voltage detecting mould Block detect this case, controller be immediately controlled load disconnect, and by alarm module sending sound-light alarm, by signal send to Monitoring center realizes the detection that battery pack open circuit, internal resistance exception, accumulator capacity reduce, stable structure, high reliablity.

Other advantages, target and feature of the utility model will be explained in the following description to a certain extent It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following Bright book is achieved and obtained.

Detailed description of the invention

It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer It is novel to be described in further detail, in which:

FIG. 1 is a schematic structural view of the utility model.

Specific embodiment

Hereinafter reference will be made to the drawings, and the preferred embodiment of the utility model is described in detail.It should be appreciated that preferably real Example is applied only for illustrating the utility model, rather than in order to limit the protection scope of the utility model.

The on-line measuring device as shown in Figure 1, battery group is opened a way, including the big function being arranged between battery and charger Rate diode, the anode connection battery of heavy-duty diode, cathode connect charger, also set up between battery and charger It goes here and there and is storing after thering is D.C. contactor, D.C. contactor and heavy-duty diode Xiang Binglian, a load to connect with a load-relay Between the positive and negative cable of battery, device further includes electric current, voltage detection module, timing module, controller and alarm module, electricity Stream, voltage detection module and timing module output end be connected with controller, controller output end respectively with alarm module, direct current Relay, load-relay are connected, and electric current, voltage detection module are used to detect electric current, the voltage of battery, the output of controller End is connected with monitoring center, and a power supply is device power supply.

ZJ1 is normally closed point when normal operation, and diode is shorted, charger and battery floating charging operation directly in parallel.This When device starts, the disconnection of ZJ1 normally closed contact makes to be equivalent to battery and charger between diode access battery and charger Isolation.

Timing module can realize device automatically by any time start by set date and stopping detection function, and timing module is by setting Period periodically starts, after starting, controller control ZJ1, ZJ2 actuating of relay, ZJ1 normally closed contact disconnect, by battery with fill Motor and bus " isolation ", due to the presence of diode, battery is only at this time the isolation on circuit and non-physical isolation, work Even if when AC fault, battery also can zero time limit to bussed supply.

ZJ2 normal opened contact closure, makes the discharge load of the enough power of battery band, at this point, Current Voltage detection module is negative Duty detection battery voltage and discharge current, under normal circumstances enough load currents of battery energy band and under keeping voltage slow Drop, if battery there is open circuit or capacity exception or internal resistance is bigger than normal, will appear accumulator voltage is rapidly reduced, voltage detecting Module detects this case, and controller disconnects load immediately, issues sound-light alarm by alarm module, and signal is sent to prison Control center,

If battery voltage is normal, but current detection module does not detect that discharge current, device then judge load Loop fault also can disconnect in time load and alert.

Power supply includes the DC/DC power adapter being connected in series and control switch, and the input terminal of power supply is connected with DC bus, The power supply of device is through control switch (ZK1) by obtaining on DC bus.

The input terminal of controller is also connected with time delay module, if battery is normal, time delay module starts in timing module It starting simultaneously at timing (time is adjustable), delay disconnects discharge load and restores normal operating mode, if time delay module fails, timing Module can also disconnect load after being delayed, and the time of timing module delay is greater than the time delay module time.Dual delay protection can have Effect prevents discharge load conduction time from too long causing equipment overheat.

Load with load-relay, electric discharge be spaced apart be connected in series after string between the positive and negative cable of battery, which may be used also Realize that automatic disconnect loads.

It is corresponded on device and is equipped with opening at load, be equipped with radiator fan, the radiator fan and controller in the opening It is connected, is operated in timing module starting, is stopped to the heat rapid cooling that the load of device generates, and when timer disconnects Only work.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program Cover in the scope of the claims of the utility model.

Claims (5)

1. The on-line measuring device 1. battery group is opened a way, it is characterised in that: including the big function being arranged between battery and charger Rate diode, the anode connection battery of heavy-duty diode, cathode connect charger, between the battery and charger also It is provided with D.C. contactor, the D.C. contactor and heavy-duty diode Xiang Binglian, a load is connected with a load-relay Gone here and there between the positive and negative cable of battery afterwards, described device further include electric current, voltage detection module, timing module, controller and The output end of alarm module, the electric current, voltage detection module and timing module is connected with controller, the controller output end It is connected respectively with alarm module, DC relay, load-relay, electric current, voltage detection module are used to detect the electricity of battery Stream, voltage, the output end of the controller are connected with monitoring center, and a power supply is device power supply.
2. The on-line measuring device 2. battery group according to claim 1 is opened a way, it is characterised in that: the power supply includes mutually going here and there The DC/DC power adapter and control switch of connection, the input terminal of the power supply are connected with DC bus.
3. The on-line measuring device 3. battery group according to claim 1 is opened a way, it is characterised in that: the input of the controller End is also connected with time delay module.
4. The on-line measuring device 4. battery group according to claim 1 is opened a way, it is characterised in that: the load and load after Electric appliance, electric discharge be spaced apart be connected in series after string between the positive and negative cable of battery.
5. The on-line measuring device 5. battery group according to claim 1 to 4 is opened a way, it is characterised in that: in described device It is equipped with opening at corresponding load, is equipped with radiator fan in the opening, the radiator fan is connected with controller.