CN102882259A - LED (light emitting diode) emergency lamp battery management device and method thereof - Google Patents
LED (light emitting diode) emergency lamp battery management device and method thereof Download PDFInfo
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- 210000004460 N cell Anatomy 0.000 description 2
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- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 2
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses an LED (light emitting diode) emergency lamp battery management device and method thereof. The LED emergency lamp battery management device comprises a level amplification and conversion unit and a remote control unit and is characterized by also comprising a sampling and balancing unit, a microcontroller CPU (central processing unit), a low-voltage self-cut unit, a charger and a work mode control unit. The device integrates the functions of battery monitoring and balancing, battery charge/discharge protection, multi-work mode switching, remote control and the like, and can perform effective monitoring and charge/discharge management and control on the battery pack of the emergency lamp so as to avoid over charge and over discharge of the battery, reduce the attenuation speed of the battery performance, prolong the service life of the battery and further improve the safety and reliability of the emergency lamp.
Description
Technical field
The present invention relates to automation field, is a kind of LED emergency light cell managing device and method thereof.
Background technology
At present, along with the generally application in emergency light of lithium ion battery, Ni-MH battery, nickel-zinc cell, the safety and reliability of battery backup, useful life and service efficiency have vital impact to the performance of emergency light.Existing emergency light is because in the uncertain periodic duty states such as supplying cell is in for a long time charging, shelves, discharge, cell life-span and confession electrical stability are subject to larger impact.
Existing emergency light product generally can only be operated under the contingency mode, namely exchanges at 220V to start work when stopping power supply.This single mode of operation makes the range of application of emergency light be subject to larger restriction.Therefore, be necessary the mode of operation of emergency light is expanded, and select and handoff functionality by remote-controlled mode of operation, emergency light also can be operated under the non-emergency rating, such as backup mode etc., further widen the range of application of emergency light.
In the battery pack that is consisted of by many cell series connection, the performance of cell has determined the performance of battery pack, particularly along with the increase of charge and discharge cycles number of times, each cell consistency of performance deviation also increases thereupon, and adopts charge balancing technology of the present invention can effectively reduce or reduce each cell consistency of performance deviation.Do not possess the cell equalization function in the existing emergency light control device, thereby greatly reduce effective use capacity and the useful life of battery pack.
General emergency light comprises that mainly battery pack, charger, charging control unit, electrooptic unit and man-machine interaction unit form.Wherein charger adopts non-program-controlled preset parameter charger more, and charging control unit often adopts non intelligent collection and control method, and the single and curing of control method can't be adopted the intelligent energy management strategy; Man-machine interaction unit adopts mechanical button and single indicator light indication mechanism state more.The present invention then adopts microcontroller that intelligent management is carried out in operating state and the man-machine interaction of the unit of emergency light, thereby satisfies the requirement of multi-operation mode and intelligent battery management.Have no so far the bibliographical information of LED emergency light cell managing device that the functions such as set battery monitoring and equilibrium, battery charging and discharging protection, multi-operation mode switching, remote control are integrated and method thereof and practice.
Summary of the invention
The objective of the invention is; prior art is carried out substantial improvements; the LED emergency light cell managing device that provides the functions such as a kind of set battery monitoring and equilibrium, battery charging and discharging protection, multi-operation mode switching, remote control to be integrated; and provide its method; can effectively monitor the emergency light battery pack, management of charging and discharging and control; avoid battery to be overcharged with overdischarge, reduce the battery performance rate of decay, prolong battery to reach, further improve the safety and reliability of emergency light.
Realize that the technical scheme that above-mentioned purpose is taked is, a kind of LED emergency light cell managing device, it comprises that level amplifies and converting unit, remote control unit, it is characterized in that, also comprise: sampling and balanced unit, microcontroller CPU, low pressure is from turn-offing the unit, charger and mode of operation control unit, described sampling and balanced unit comprise monomer voltage sampling relay J 1～Jn, flying capacitance Cs, sampling relay J S, balanced control relay JB, sampling amplifier A1 and decoder, monomer voltage sampling relay J 1～Jn is connected with separately cell Bat1～Batn respectively, monomer voltage sampling relay J 1～Jn all is connected with flying capacitance Cs, monomer voltage sampling relay J 1～Jn and controlling of sampling relay J S be connected control relay JB and be connected, controlling of sampling relay J S is connected with sampling amplifier A1; Described low pressure comprises that from turn-offing the unit detection relay J F, battery first turn-off relay J C1, battery second turn-offs relay J C2 and transfer relay JSw, and detection relay J F, battery first turn-off relay J C1, battery the second shutoff relay J C2 is connected with transfer relay JSw; Described charger and mode of operation control unit comprise charger, battery charging and discharging control switch JCg and power switch Jle, and charger is connected with battery charging and discharging control switch JCg, and battery charging and discharging control switch JCg is connected with power switch Jle; Sampling is connected with the D08 of microcontroller CPU～D13 pin with the multichannel socket of the decoder of balanced unit, sampling is connected with the D07 pin of microcontroller CPU with the balanced control relay JB of balanced unit, sampling is connected with the ADCO pin of microcontroller CPU with the sampling amplifier A1 of balanced unit, low pressure is connected with the D11 pin of microcontroller CPU from the detection relay J F that turn-offs the unit, low pressure is turn-offed relay J C2 from the battery second that turn-offs the unit and is connected with the D01 pin of microcontroller CPU, the constant current control port of the charger of charger and mode of operation control unit is connected with the D02 pin of microcontroller CPU, the constant voltage control port of the charger of charger and mode of operation control unit is connected with the D03 pin of microcontroller CPU, the on off control port of the charger of charger and mode of operation control unit is connected with the D04 pin of microcontroller CPU, the battery charging and discharging control switch JCg of charger and mode of operation control unit is connected with the D05 pin of microcontroller CPU, the power switch Jle of charger and mode of operation control unit is connected with the D06 pin of microcontroller CPU, and described level amplification is connected with the Vref pin with the ADC1 of microcontroller CPU with converting unit.
A kind of LED emergency light battery management method is characterized in that it comprises following process:
1) sampling and balancing procedure
When (a) device resets, each port of microcontroller CPU keeps low level, and the decoder of sampling and balanced unit is any passage of gating not, and monomer voltage sampling relay J 1～Jn, controlling of sampling relay J S and balanced control relay JB all are in off state, makes that counter CI is 1;
(b) by monomer voltage sampling relay J i conducting corresponding to microcontroller CPU control CI, cell Bati keeps capacitor C s to charge by the sampling relay J i that is attached thereto to being connected in parallel on the sampling of measuring on the bus, and behind the suitable time-delay, turn-off sampling relay J i, this moment, the Bati monomer battery voltage was maintained on the flying capacitance Cs;
(c) by microcontroller CPU control controlling of sampling relay J S conducting, and startup A/D converter controller ADC, voltage on the flying capacitance Cs after nursing one's health, sampling and the sampling amplifier A1 amplification of balanced unit is carried out the AD conversion, after AD converts, preserve sampled value Vi, then, turn-offed by microcontroller CPU control controlling of sampling relay J S;
(d) counter CI adds 1, if counter CI counts n less than cell, goes to (b), lower monomer battery voltage measured, otherwise, go to (e);
(e) if battery is in charged state, then determines needs according to the monomer voltage measured and balanced control algolithm and carries out balanced cell, establishes that need to carry out balanced cell be Bati;
(f) by the corresponding monomer voltage sampling relay J i of microcontroller CPU control Bati and simultaneously conducting of balanced control relay JB, make the loading sharing circuit closed of cell Bati, to the Bati loading sharing that charges;
(g) if the balanced cycle does not regularly arrive, then wait for; Otherwise, turn-offed simultaneously by microcontroller CPU control monomer voltage sampling relay J i and balanced control relay JB, go to (b);
2) certainly turn-off testing process
(h) microcontroller CPU reads by reading low pressure from the detection relay J F output state that turn-offs the unit, if such as 1, judges the current power failure state that is;
(i) microcontroller CPU judge cell Bat1～Batn total voltage whether less than minimum turn-off voltage,, then directly arrive (k) if be not less than, if less than, then enter (j);
(j) microcontroller CPU sends out and closes battery the second shutoff relay J C2 instruction, and battery second turn-offs relay J C2 cut-off, because of the external power source dead electricity, it also is cut-off state that battery second turn-offs relay J C1, this moment, controlling of sampling relay J S opened, the inner outage of device, thus finish from turn-offing;
(k) finish;
3) charger and operational mode control procedure
When (l) the power switch Jle of charger and mode of operation control unit and battery charging and discharging control switch JCg all are in opening, the LED emergency light goes out and charger is not cell Bat1～Batn charging, and this state occurs in the external power supply power supply and cell battery Bat1～Batn is full of the situation that electricity or external power supply dead electricity and LED emergency light go out;
(m) the power switch Jle of charger and mode of operation control unit opens, when battery charging and discharging control switch JCg is closed, the LED emergency light goes out and cell Bat1～Batn charging, this state occurs in external power supply power supply and cell Bat1～Batn charging, the situation that the LED emergency light turn-offs;
(n) the power switch Jle of charger and mode of operation control unit is closed, when battery charging and discharging control switch JCg opens, the LED emergency light is bright and by the charger power supply, this state occurs in cell Bat1～Batn and is full of electricity and external power source and requires the bright situation of LED emergency light;
(o) the power switch Jle of charger and mode of operation control unit and battery charging and discharging control switch JCg are all closed, the LED emergency light is bright, cell Bat1～Batn charging, this state occurs in the external power supply power supply, the LED emergency light is bright, and cell Bat1～Batn underfill electricity situation;
4) for the charge balancing strategy of cell
Device adopts following balanced control strategy:
(p) gather successively monomer battery voltage, and send in the linear list;
(q) choose maximum in the linear list, cell sequence number corresponding to record maximum
(r) monomer of needs equilibrium carried out equilibrium.
A kind of LED emergency light of the present invention cell managing device, take low-power-consumption embedded microcontroller as core, on the basis of N to 1 flying capacitance monomer voltage detection technique, employing is connected in parallel on monomer voltage sampling relay and the balanced control relay on the voltage measurement bus, by the time-sharing multiplex observing and controlling to the voltage measurement bus, realize voltage measurement and charge balancing to N cell; Employing is based on intelligent power supply and the certainly shutoff control of 220V Alternating Current Power Supply state-detection and the detection of cell discharge cut-off voltage, can be when 220V AC dump and battery power exhaust, close the power supply of battery management control device, hydraulic performance decline or the damage of avoiding N cell overdischarge to cause, after the 220V Alternating Current Power Supply recovers, recover the battery management control device is powered; Management of charging and discharging, balance control method and strategy that the battery charge state computational methods that employing detects based on charging and discharging currents combine with voltage monitoring, avoided overcharging and crossing and putting of battery, further improved battery service efficiency, prolonged useful life of battery; For satisfying the application demand of different user, the LED emergency light has designed two kinds of mode of operations, be contingency mode and backup mode, and adopt the infrared remote control mode to realize switching and the functions such as the self check of LED emergency light, cell activation and the control of emergency light switch of two kinds of mode of operations, for the operation and maintenance of emergency light provides convenience and mode of operation flexibly.Man-machine interaction partly adopts the infrared remote control mode to control mode of operation and the on off state of emergency light.Discharge and recharge the control of control, charge balancing, multi-mode is switched and from turn-off function, employing integrates bus-sharing technology and measurement and the control of the measurement of flying capacitance monomer battery voltage and charge balancing function, realizes voltage measurement and equalization function to each cell; Acquisition Circuit adopts N the two-way that is connected in parallel on the voltage measurement bus often to open the light relay as the sampling relay, be used for finishing each monomer battery voltage and measure the passage gating, the flying capacitance that employing is connected in parallel on the voltage measurement bus is finished tested monomer battery voltage maintenance, by the tour inspection of the voltage realization on the measurement flying capacitance to each monomer battery voltage; Employing is connected in parallel on the equilibrium optical relay on the voltage measurement bus, press the intelligent equalization algorithm within the balanced cycle, by sampling relay and the balanced cell discharge loop that consists of with optical relay of connecting simultaneously a certain cell, realize this cell balanced.Can effectively monitor LED emergency light battery pack, management of charging and discharging and control, avoid battery to be overcharged with overdischarge, reduce the battery performance rate of decay, prolong battery to reach, further improve the safety and reliability of LED emergency light.
Description of drawings
Fig. 1 is a kind of LED emergency light cell managing device schematic diagram;
Fig. 2 is sampling and balanced unit 1 schematic diagram among Fig. 1;
Fig. 3 is that Fig. 1 mesolow is from turn-offing unit 3 schematic diagrams;
Fig. 4 is charger and mode of operation control unit 4 schematic diagrams among Fig. 1;
Fig. 5 is that level amplifies and converting unit 5 schematic diagrams among Fig. 1;
Fig. 6 is remote control unit 6 schematic diagrams among Fig. 1.
Embodiment
The below utilizes embodiment that a kind of LED emergency light cell managing device of the present invention is elaborated; but be not to limit claim protection range of the present invention; for a person skilled in the art; in the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification, so all technical schemes that are equal to all belong to category of the present invention.
With reference to Fig. 1～6, a kind of LED emergency light cell managing device of the present invention comprises that sampling and balanced unit 1, microcontroller CPU 2, low pressure are turn-offed unit 3, charger and mode of operation control unit 4 certainly, level amplifies and converting unit 5 and remote control unit 6.Sampling is connected with the D08 of microcontroller CPU2～D13 pin with the multichannel socket of the decoder of balanced unit 1, sampling is connected with the D07 pin of microcontroller CPU2 with the balanced control relay JB of balanced unit 1, sampling is connected with the ADCO pin of microcontroller CPU2 with the sampling amplifier A1 of balanced unit 1, low pressure is connected with the D11 pin of microcontroller CPU2 from the detection relay J F that turn-offs unit 3, low pressure is turn-offed relay J C2 from the battery second that turn-offs unit 3 and is connected with the D01 pin of microcontroller CPU2, the constant current control port of the charger of charger and mode of operation control unit 4 is connected with the D02 pin of microcontroller CPU2, the constant voltage control port of the charger of charger and mode of operation control unit 4 is connected with the D03 pin of microcontroller CPU2, the on off control port of the charger of charger and mode of operation control unit 4 is connected with the D04 pin of microcontroller CPU2, the battery charging and discharging control switch JCg of charger and mode of operation control unit 4 is connected with the D05 pin of microcontroller CPU, the power switch Jle of charger and mode of operation control unit 4 is connected with the D06 pin of microcontroller CPU2, and described level amplification is connected with the Vref pin with the ADC1 of microcontroller CPU2 with converting unit 5; The output of remote control unit 6 is connected with the DI2 pin of microcontroller CPU 2.Microcontroller CPU2 adopts the C8051F500 with 12 ADC interfaces and multi-path digital IO interface, the AD that finishes signal by ADC changes, finish the control of the switch of all PHOTOMOS relays by digital I/O port and decoder, concrete measurement, control and data are processed to calculate and are finished by software, the basis of compilation automatic control technology of software program and Computer Processing technology are the technology that those skilled in the art are familiar with.
With reference to Fig. 2, described sampling and balanced unit 1 comprise monomer voltage sampling relay J 1～Jn, flying capacitance Cs, sampling relay J S, balanced control relay JB, sampling amplifier A1 and decoder, monomer voltage sampling relay J 1～Jn is connected with separately cell Bat1～Batn respectively, monomer voltage sampling relay J 1～Jn all is connected with flying capacitance Cs, monomer voltage sampling relay J 1～Jn and controlling of sampling relay J S be connected control relay JB and be connected, controlling of sampling relay J S is connected with sampling amplifier A1; 1～Jn is closed successively by software control by decoder CS0～CSn socket for monomer voltage sampling relay J, the voltage of cell Bat1～Batn is moved to flying capacitance Cs successively, by sampling relay J S cooperation monomer voltage is connected to sampling amplifier A1 successively, the monomer battery voltage after the amplification is by the embedded ADC conversion of microcontroller CPU and preservation.The batteries monomer active equalization is realized by monomer voltage sampling relay J 1～Jn and balanced control relay JB, sampling and balanced time-sharing work, be that monomer sampling relay J 1～Jn serves as the sampling relay in the voltage sample time slot, and in balanced time slot, serve as balanced relay.The JB+ of balanced control relay and JB-are connected to respectively monomer sampling relay J 1-and J2+, thereby consist of the balanced loop of monomer.
With reference to Fig. 3, described low pressure comprises that from turn-offing unit 3 detection relay J F, battery first turn-off relay J C1, battery second turn-offs relay J C2 and transfer relay JSw, and detection relay J F, battery first turn-off relay J C1, battery the second shutoff relay J C2 is connected with transfer relay JSw; The external power supply testing circuit is realized by AC/DC conversion and detection relay J F, battery first turn-offs relay J C1 and be in closure state in the situation of external power supply electrifying, simultaneously, the emitter-base bandgap grading that battery second turn-offs relay J C2 is set low by program control and is in closure state, battery first turn-offs and makes a point by relay J C1, battery the second shutoff relay J C2 closure is electronegative potential, guarantees that microcontroller CPU is in powering state thereby transfer relay JSw is in closure.When the external power source dead electricity, when powered battery voltage is higher than shutoff voltage simultaneously, battery first turn-offs and is disconnected by relay J C1, thereby battery the second shutoff relay J C2 remains closed and guarantees that complete machine still is in powering state, when outside dead electricity and cell voltage during less than shutoff voltage, program is sent out the shutoff instruction, and battery second turn-offs relay J C2 and disconnects, transfer relay JSw disconnects, thereby turn-offs the complete machine power supply.
With reference to Fig. 4, described charger and mode of operation control unit 4 comprise charger, battery charging and discharging control switch JCg and power switch Jle, and charger is connected with battery charging and discharging control switch JCg, and battery charging and discharging control switch JCg is connected with power switch Jle; Battery charging and discharging control switch JCg is used for the control charged state.Power switch Jle is used for the state of control LED emergency light.
With reference to Fig. 5, described level amplifies and converting unit 5 is comprised of two-way amplifier A and resistance-capacitance network, and wherein Vr is connected to the 2IN+ end of amplifier A by resistance R 3.The 2IN-end of amplifier A is by resistance R 1 ground connection.The 2OUT of amplifier A meets outside ADC1 through R7.Vr connects 1OUT and the 1IN+ end of A through resistance R 4.The 1IN-end of A is connected to Vref through R6, simultaneously through R5 and C2 parallel network ground connection.A5V is connected to resistance R 7 and capacitor C 3 through voltage-stabiliser tube, capacitor C 3 another termination ADC1.
With reference to Fig. 6, remote control unit 6 is comprised of infrared receiver device IFM and resistance-capacitance network, and wherein, the VCC of IFM end is connected to the 5V power supply by resistance R 1, and the VCC end is by filter capacitor C1 and C2 ground connection.The GND of IFM holds direct ground connection, and the OUT of IFM end is connected to the output of remote control unit through 5V power supply and pull-up resistor R2, and the output of remote control unit is connected with the DI2 pin of microcontroller CPU2.
The used components and parts of a kind of LED emergency light cell managing device of the present invention:
Monomer voltage sampling relay J 1～Jn, controlling of sampling relay J S and balanced control relay JB all adopt NEC PS7113-2A two-way often to drive the PHOTOMOS relay, this relay conducting resistance is 0.9 Ω, maximum current is 300mA, monomer voltage according to dissimilar batteries, can be by selecting different current-limiting resistances, euqalizing current is limited in the allowed band, cell Bat1～Batn in this example is nickel-zinc cell, the nominal voltage of cell Bat1～Batn is 1.75V, current-limiting resistance R0, R1 ..., the Rn design load is 1.5 Ω; Flying capacitance Cs is also referred to as N than 1, or N is to 1 flying capacitance, adopts the polystyrene of low-leakage current to keep electric capacity, and capacitance is 0.1uF;
Transfer relay JSw adopts STANSON STN607D PMOS pipe, the used drive circuit of the gate pole of this PMOS pipe is that battery first turn-offs relay J C1 and battery second turn-offs relay J C2, battery first turn-offs relay J C1 and battery the second shutoff relay J C2 all adopts the PC817 photoelectrical coupler, is used for finishing interchange electrifying startup and Self-disconnecting control to device;
Detecting relay J F is Alternating Current Power Supply state-detection input interface chip, adopts SHARP PC817 photoelectrical coupler, is used for finishing Alternating Current Power Supply state-detection and signal isolation;
Battery charging and discharging control switch JCg and power switch Jle all adopt STANSON STN4110 N-channel MOS pipe, and the NMOS gate pole adopts the PC817 photoelectrical coupler by microcontroller CPU2 control to drive;
Microcontroller CPU2 adopts the C8051F500 with 12 ADC interfaces and multi-path digital IO interface, the AD that finishes signal by ADC changes, finish the control of the switch of all PHOTOMOS relays by digital I/O port and decoder, concrete measurement, control and data are processed to calculate and are finished by software, the basis of compilation automatic control technology of software program and Computer Processing technology are the technology that those skilled in the art are familiar with.
Components and parts of the present invention are defined as respectively: cell Bat1～Batn is some cell Bat1, Bat2 ... Bati ... Batn, wherein Bati is i cell; Voltage sample relay J 1～Jn is several voltage sample relay J 1, J2 ... Ji ... Jn, wherein Ji is i the voltage sample relay that cell Bati is corresponding; Controlling of sampling relay J Sample is JS; Balanced control relay JBalance is JB; Detecting relay J Feedback is JF; It is that JC1, battery the second shutoff relay J Control2 are JC2 that battery first turn-offs relay J Control1; Transfer relay JSwitch is JSw; Battery charging and discharging control switch JCharge is JCg; Power switch Jled is Jle.
The inventive method related definition is: cell sampled voltage V1～Vn is the corresponding sampled voltage V1 of cell Bat1～Batn, V2 ... Vi ... Vn, wherein Vi is sampled voltage corresponding to cell Bati; CI is counter, and it is to count the natural number of n greater than 1 less than cell.
A kind of LED emergency light battery management method is characterized in that it comprises following process:
1) sampling and balancing procedure
When (a) device resets, each port of microcontroller CPU keeps low level, and the decoder of sampling and balanced unit is any passage of gating not, and monomer voltage sampling relay J 1～Jn, controlling of sampling relay J S and balanced control relay JB all are in off state, and counter CI puts 1;
(b) closed by monomer voltage sampling relay J i corresponding to microcontroller CPU control CI, voltage sample relay J i period of contact, cell Bati keeps capacitor C s to charge by being connected in parallel on the sampling of measuring on the bus, and behind the suitable time-delay, turn-off sampling relay J i, this moment, this monomer battery voltage was maintained on the flying capacitance Cs;
(c) by microcontroller CPU control controlling of sampling relay J S conducting, start A/D converter controller ADC, the upper voltage of flying capacitance Cs after nursing one's health, sampling and the sampling amplifier A1 amplification of balanced unit is carried out the AD conversion, after AD converts, preserve sampled value Vi, then, turn-offed by microcontroller CPU control controlling of sampling relay J S;
(d) counter CI adds 1, if counter CI counts n less than cell, goes to (b), lower monomer battery voltage measured, otherwise, go to (e);
(e) if, battery is in charged state, then determines needs according to the monomer voltage measured and balanced control algolithm and carries out balanced cell, is made as Bati, the voltage sample relay corresponding with Bati is Ji;
(f) need balanced monomer voltage sampling relay J i and simultaneously conducting of balanced control relay JB by microcontroller CPU control, make the loading sharing circuit closed of this cell, to this cell loading sharing that charges;
(g) if the balanced cycle does not regularly arrive, then wait for; Otherwise, turn-offed simultaneously by microcontroller CPU control monomer voltage sampling relay J i and balanced control relay JB, go to (b);
2) certainly turn-off testing process
(h) microcontroller CPU reads low pressure from the detection relay J F output state that turn-offs the unit, if such as 1, judges the current power failure state that is;
(i) microcontroller CPU judge cell Bat1～Batn voltage whether less than minimum turn-off voltage,, then directly arrive (k) if be not less than, if less than, then enter (j);
(j) microcontroller CPU sends out and closes battery the second shutoff relay J C2 instruction, and battery second turn-offs relay J C2 cut-off, because of the external power source dead electricity, it also is cut-off state that battery second turn-offs relay J C1, this moment, controlling of sampling relay J S opened, the inner outage of device, thus finish from turn-offing;
(k) finish;
3) charger and operational mode control procedure
When (l) the power switch Jle of charger and mode of operation control unit and battery charging and discharging control switch JCg all are in opening, the LED emergency light goes out and charger is not cell Bat1～Batn charging, and this state occurs in the external power supply power supply and cell battery Bat1～Batn is full of the situation that electricity or external power supply dead electricity and LED emergency light go out;
(m) the power switch Jle of charger and mode of operation control unit opens, when battery charging and discharging control switch JCg is closed, the LED emergency light goes out and cell Bat1～Batn charging, this state occurs in external power supply power supply and cell Bat1～Batn charging, the situation that the LED emergency light turn-offs;
(n) the power switch Jle of charger and mode of operation control unit is closed, when battery charging and discharging control switch JCg opens, the LED emergency light is bright and by the charger power supply, this state occurs in cell Bat1～Batn and is full of electricity and external power source and requires the bright situation of LED emergency light;
(o) the power switch Jle of charger and mode of operation control unit and battery charging and discharging control switch JCg are all closed, the LED emergency light is bright, cell Bat1～Batn charging, this state occurs in the external power supply power supply, the LED emergency light is bright, and cell Bat1～Batn underfill electricity situation;
4) for the charge balancing strategy of cell
Device adopts following balanced control strategy:
(p) gather successively monomer battery voltage, and send in the linear list;
(q) choose maximum in the linear list, cell sequence number corresponding to record maximum;
(r) monomer of needs equilibrium carried out equilibrium.
Claims (2)
1. LED emergency light cell managing device, it comprises that level amplifies and converting unit, remote control unit, it is characterized in that, also comprise: sampling and balanced unit, microcontroller CPU, low pressure is from turn-offing the unit, charger and mode of operation control unit, described sampling and balanced unit comprise monomer voltage sampling relay J 1～Jn, flying capacitance Cs, sampling relay J S, balanced control relay JB, sampling amplifier A1 and decoder, monomer voltage sampling relay J 1～Jn is connected with separately cell Bat1～Batn respectively, monomer voltage sampling relay J 1～Jn all is connected with flying capacitance Cs, monomer voltage sampling relay J 1～Jn and controlling of sampling relay J S be connected control relay JB and be connected, controlling of sampling relay J S is connected with sampling amplifier A1; Described low pressure comprises that from turn-offing the unit detection relay J F, battery first turn-off relay J C1, battery second turn-offs relay J C2 and transfer relay JSw, and detection relay J F, battery first turn-off relay J C1, battery the second shutoff relay J C2 is connected with transfer relay JSw; Described charger and mode of operation control unit comprise charger, battery charging and discharging control switch JCg and power switch Jle, and charger is connected with battery charging and discharging control switch JCg, and battery charging and discharging control switch JCg is connected with power switch Jle; Sampling is connected with the D08 of microcontroller CPU～D13 pin with the multichannel socket of the decoder of balanced unit, sampling is connected with the D07 pin of microcontroller CPU with the balanced control relay JB of balanced unit, sampling is connected with the ADCO pin of microcontroller CPU with the sampling amplifier A1 of balanced unit, low pressure is connected with the D11 pin of microcontroller CPU from the detection relay J F that turn-offs the unit, low pressure is turn-offed relay J C2 from the battery second that turn-offs the unit and is connected with the D01 pin of microcontroller CPU, the constant current control port of the charger of charger and mode of operation control unit is connected with the D02 pin of microcontroller CPU, the constant voltage control port of the charger of charger and mode of operation control unit is connected with the D03 pin of microcontroller CPU, the on off control port of the charger of charger and mode of operation control unit is connected with the D04 pin of microcontroller CPU, the battery charging and discharging control switch JCg of charger and mode of operation control unit is connected with the D05 pin of microcontroller CPU, the power switch Jle of charger and mode of operation control unit is connected with the D06 pin of microcontroller CPU, and described level amplification is connected with the Vref pin with the ADC1 of microcontroller CPU with converting unit.
2. LED emergency light battery management method is characterized in that it comprises following process:
A kind of LED emergency light battery management method is characterized in that it comprises following process:
1) sampling and balancing procedure
When (a) device resets, each port of microcontroller CPU keeps low level, and the decoder of sampling and balanced unit is any passage of gating not, and monomer voltage sampling relay J 1～Jn, controlling of sampling relay J S and balanced control relay JB all are in off state, makes that counter CI is 1;
(b) by monomer voltage sampling relay J i conducting corresponding to microcontroller CPU control CI, cell Bati keeps capacitor C s to charge by the sampling relay J i that is attached thereto to being connected in parallel on the sampling of measuring on the bus, and behind the suitable time-delay, turn-off sampling relay J i, this moment, the Bati monomer battery voltage was maintained on the flying capacitance Cs;
(c) by microcontroller CPU control controlling of sampling relay J S conducting, and startup A/D converter controller ADC, voltage on the flying capacitance Cs after nursing one's health, sampling and the sampling amplifier A1 amplification of balanced unit is carried out the AD conversion, after AD converts, preserve sampled value Vi, then, turn-offed by microcontroller CPU control controlling of sampling relay J S;
(d) counter CI adds 1, if counter CI counts n less than cell, goes to (b), lower monomer battery voltage measured, otherwise, go to (e);
(e) if battery is in charged state, then determines needs according to the monomer voltage measured and balanced control algolithm and carries out balanced cell, establishes that need to carry out balanced cell be Bati;
(f) by the corresponding monomer voltage sampling relay J i of microcontroller CPU control Bati and simultaneously conducting of balanced control relay JB, make the loading sharing circuit closed of cell Bati, to the Bati loading sharing that charges;
(g) if the balanced cycle does not regularly arrive, then wait for; Otherwise, turn-offed simultaneously by microcontroller CPU control monomer voltage sampling relay J i and balanced control relay JB, go to (b);
2) certainly turn-off testing process
(h) microcontroller CPU reads by reading low pressure from the detection relay J F output state that turn-offs the unit, if such as 1, judges the current power failure state that is;
(i) microcontroller CPU judge cell Bat1～Batn total voltage whether less than minimum turn-off voltage,, then directly arrive (k) if be not less than, if less than, then enter (j);
(j) microcontroller CPU sends out and closes battery the second shutoff relay J C2 instruction, and battery second turn-offs relay J C2 cut-off, because of the external power source dead electricity, it also is cut-off state that battery second turn-offs relay J C1, this moment, controlling of sampling relay J S opened, the inner outage of device, thus finish from turn-offing;
(k) finish;
3) charger and operational mode control procedure
When (l) the power switch Jle of charger and mode of operation control unit and battery charging and discharging control switch JCg all are in opening, the LED emergency light goes out and charger is not cell Bat1～Batn charging, and this state occurs in the external power supply power supply and cell battery Bat1～Batn is full of the situation that electricity or external power supply dead electricity and LED emergency light go out;
(m) the power switch Jle of charger and mode of operation control unit opens, when battery charging and discharging control switch JCg is closed, the LED emergency light goes out and cell Bat1～Batn charging, this state occurs in external power supply power supply and cell Bat1～Batn charging, the situation that the LED emergency light turn-offs;
(n) the power switch Jle of charger and mode of operation control unit is closed, when battery charging and discharging control switch JCg opens, the LED emergency light is bright and by the charger power supply, this state occurs in cell Bat1～Batn and is full of electricity and external power source and requires the bright situation of LED emergency light;
(o) the power switch Jle of charger and mode of operation control unit and battery charging and discharging control switch JCg are all closed, the LED emergency light is bright, cell Bat1～Batn charging, this state occurs in the external power supply power supply, the LED emergency light is bright, and cell Bat1～Batn underfill electricity situation;
4) for the charge balancing strategy of cell
Device adopts following balanced control strategy:
(p) gather successively monomer battery voltage, and send in the linear list;
(q) choose maximum in the linear list, cell sequence number corresponding to record maximum;
(r) monomer of needs equilibrium carried out equilibrium.
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| CN201210409364.6A CN102882259B (en) | 2012-10-24 | 2012-10-24 | LED (light emitting diode) emergency lamp battery management device and method thereof |
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| CN201210409364.6A CN102882259B (en) | 2012-10-24 | 2012-10-24 | LED (light emitting diode) emergency lamp battery management device and method thereof |
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