CN100379114C - Charging circuit, urgent lighting device and luminous device - Google Patents

Charging circuit, urgent lighting device and luminous device Download PDF

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Publication number
CN100379114C
CN100379114C CNB2004100923145A CN200410092314A CN100379114C CN 100379114 C CN100379114 C CN 100379114C CN B2004100923145 A CNB2004100923145 A CN B2004100923145A CN 200410092314 A CN200410092314 A CN 200410092314A CN 100379114 C CN100379114 C CN 100379114C
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battery
charge
mentioned
voltage
intermittent
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CN1614852A (en
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佐藤公仁
岩井直子
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Toshiba Lighting and Technology Corp
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Toshiba Lighting and Technology Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Secondary Cells (AREA)

Abstract

To make judgment properly about the life of a battery when it is charged, to attain power saving and life prolongation.An arithmetic operation control unit 16 turns a switch 17 of DC power on/off from a converter circuit 15 so as to intermittently charge a battery 13. The operation control unit 16 obtains difference voltage between the battery voltage when auxiliary charge is started in the case of intermittent charge and the battery voltage when the auxiliary charge is ended. When the internal resistance value of the battery 13 obtained by dividing the difference voltage by the charge current obtains a prescribed value or more, a life of the battery is judged. When the life of the battery is judged, an output apparatus 22 informs a user of the result of judgement.(C)2005,JPO&NCIPI.

Description

Charging circuit, emergency ignition device and lighting device
Technical field
The present invention relates to when having a power failure to emergency light or lead the way the lamp supply power and charging circuit, emergency ignition device and lighting device that the battery of lighting a lamp charges.
Background technology
For example, when having a power failure by battery to lighting device supply powers such as the emergency light or the lamps of leading the way, so that when having a power failure, also can keep lighting a lamp of stipulated time.For this reason, need to make its electric power that has can lighting device be lit a lamp more than the stipulated time in advance to battery charge.
As the charging modes of battery, have two kinds of batch (-type) charging and trickle charges.Batch (-type) charging is, is charged to fully charged state in the charging in the early stage, and the interval of stopping is set thereafter, replenishing the interval capacity that is reduced by self discharge that stops through the interval back of stopping with compensating charge, dashes electricity and utilizes timer control to carry out.Trickle charge is that the lower charging current of usefulness is charged continuously, makes battery keep fully charged state all the time thus.
Following prior art is arranged: in the charging process of secondary cell (battery), make its charging current break-make off and on, according to disconnected cell voltage Von and the disconnected open cell voltage Voff afterwards of charging current before of charging current, obtain the value of the internal driving R that is equivalent to secondary cell, value Z (int) that internal driving R to initial stage of secondary cell the time is suitable and the value Z (now) suitable with the internal driving R of up-to-date secondary cell compare, judge the life-span (for example, with reference to patent documentation 1) of secondary cell.
In addition, also has following prior art: when carrying out intermittent charge, flowing through the charging current bigger than the charging current between the initial stage charge period comes secondary cell is carried out boost charge, and, be provided with between stand-down than charging initial stage length, the mean temperature of secondary cell is reduced preventing to cause deterioration, and then improve the life-span (for example, with reference to patent documentation 2) of secondary cell.
Patent documentation 1: the Japan Patent spy open the 2003-139827 communique (Fig. 2, Fig. 3);
Patent documentation 2: the Japan Patent spy opens 2003-236632 communique (Fig. 3).
But, in patent documentation 2 disclosed technology, so long as during the boost charge, just no matter the charged state of secondary cell and carry out boost charge, therefore, even residue did not need to charge under the situation of the capacity that charges originally yet in secondary cell.This causes the waste of electric power, and the chance of charging increases, and might shorten the life-span of secondary cell.
Summary of the invention
The objective of the invention is to, can realize saving charging circuit, emergency ignition device and the lighting device of electric power and long lifetime when the charging of battery is provided.
First charging circuit that invention relates to has: translation circuit will become direct voltage from the AC voltage conversion of source power supply; Switch, may command is from the power supply of above-mentioned translation circuit to battery; The intermittent charge unit makes above-mentioned switch on and off carry out the intermittent charge of above-mentioned battery; The battery voltage detection unit, the cell voltage the when boost charge when detection is carried out intermittent charge with above-mentioned intermittent charge unit begins; And voltage comparison unit, when cell voltage detected by above-mentioned battery voltage detection unit, when boost charge begins surpasses setting, omit the boost charge at least one cycle of the intermittent charge in the above-mentioned intermittent charge unit, the ON time of the boost charge of above-mentioned intermittent charge unit after with the full charging of above-mentioned battery be set in 3 seconds with interior, turn-off time be set at 30 seconds~in 3 minutes.
In this invention and following invention, under not specially appointed situation, the definition and the art-recognized meanings of term are as follows.Translation circuit, the AC voltage conversion that is used for the source power supply that will exchange becomes the circuit of the direct voltage of regulation, for example is made of the step-down break-and-make switch circuit with switch element, can change output voltage by the conducting duty ratio that changes switch element.Switch carries out break-make control by s operation control portion, and the direct current of transformation into itself's circuit offers battery in the future, for example can make field-effect transistors FET.In addition, battery can use various secondary cells such as NI-G (NiCd) battery or Ni-MH battery.
The intermittent charge unit is the unit that carries out the intermittent charge of battery by on-off switch, splits putting the disconnected control that works into and carry out the intermittent charge of battery.Intermittent charge is following charging modes: is in fully charged state in the charging in the early stage, the interval of stopping is set thereafter, and after through the interval of stopping, the capacity that utilizes the boost charge compensation to reduce because of self discharge in the interval of stopping.
The battery voltage detection unit is used for detecting the cell voltage when carrying out intermittent charge in the intermittent charge unit.Cell voltage when in addition, boost charge begins comprises boost charge and begins preceding cell voltage.
Among the present invention, when the cell voltage when boost charge begins surpasses setting, omit the boost charge at least one cycle.
Usually, when battery was new, the internal driving value was little, and the self discharge amount is also little, so do not need boost charge, therefore, when battery is in this state, omitted unnecessary boost charge.
According to the present invention, when not needing boost charge, omit boost charge, so can save electric power.In addition, the boost charge in the time of can omitting battery and be in fully charged state is so can realize the long lifetime of battery.
The charging circuit structure that second invention relates to is, in first invention, the ON time of the boost charge of above-mentioned intermittent charge unit after with the full charging of above-mentioned battery be set in 30 seconds with interior, turn-off time be set at 30 seconds~in 3 minutes.
First invention or second invention are, with between former charging zone and the interval of stopping is the structure of number chronomere, make-and-break time when being modified into boost charge (boost charge interval, the interval of stopping) is shorter, the self discharge amount that causes because of self discharge in the interval of stopping can be suppressed to lessly, the ON time of boost charge is set at 3 seconds with interior or be in 30 seconds~3 minutes with interior, turn-off time in 30 seconds.
According to the present invention, shorten the interval of stopping, therefore can be suppressed to the self discharge amount that causes because of self discharge less.When the turn-off time is can suppress the self discharge amount in 30 seconds~3 minutes the time, so, even when in the interval of stopping, taking place to have a power failure, also battery can be remained on the state that is close to full charging.
The 3rd the emergency ignition device that invention relates to has: as each described charging circuit in first and second invention; Carried out the battery of intermittent charge by above-mentioned charging circuit; And ignition device, when having a power failure, utilize the power supply point bright light source of supplying with by above-mentioned battery.
The present invention is an emergency ignition device of lighting the emergency light for example or the lamp of leading the way, and light source for example is incandescent lamp, fluorescent lamp or light-emitting diode.According to the present invention, can obtain having the emergency ignition device of the effect of each invention in first and second.
The 4th lighting device that invention relates to has: apparatus body; Be located at the light source on the utensil; And, as the described emergency ignition device of the 3rd invention.According to the present invention, can obtain having the lighting device of the effect of the 4th invention.
According to first invention, when not needing boost charge, can omit boost charge, so can save electric power, can realize the long lifetime of battery.According to second or the 3rd invention, the interval of stopping that can shorten boost charge is so that the self discharge amount that self discharge can be caused is suppressed to is less, even under the situation that takes place to have a power failure, also battery can be remained on almost fully charged state in the interval of stopping.According to the 4th invention, the emergency ignition device that can obtain having the effect of each invention in first to the 3rd.According to the 5th invention, can obtain having the lighting device of the effect of the 4th invention.
Description of drawings
Fig. 1 is the structured flowchart of the lighting device of embodiment of the present invention.
Fig. 2 is the structured flowchart of expression s operation control portion one example with reference to the charging circuit in the mode of the present invention.
Fig. 3 is the key diagram with reference to charging figure one example in the mode of the present invention.
Fig. 4 is the key diagram of the operation content of the internal driving arithmetic element with reference to the charging circuit in the mode of the present invention.
Fig. 5 is of the present invention with reference to another routine key diagram of the charging figure in the mode.
Fig. 6 is the structured flowchart of s operation control portion one example of the charging circuit in the expression embodiment of the present invention.
Fig. 7 is the flow chart of the contents processing of the intermittent charge carried out of the cell voltage of the s operation control portion of expression in the embodiment of the present invention when beginning according to boost charge.
Fig. 8 is the flow chart of another routine contents processing of intermittent charge of carrying out of the cell voltage of the s operation control portion of expression in the embodiment of the present invention when beginning according to boost charge.
Embodiment
Fig. 1 is the structured flowchart of the lighting device of embodiment of the present invention.Charging circuit 11 will charge to battery 13 after will being transformed into direct current from the alternating current of source power supply 12, utilize intermittent charge all the time to battery 13 chargings.On battery 13, connecting light source 14, when the power supply of light source 14 has a power failure, putting bright light source 14 to light source 14 supply powers by battery 13 through ignition device 31.Light source 14 for example is incandescent lamp or fluorescent lamp, light-emitting diode etc., and lighting device for example is lighting devices such as the emergency light or the lamp of leading the way.In addition, battery 13 for example is a Ni-MH battery.
The alternating voltage of source power supply 12 is imported in the translation circuit 15 of charging circuit 11, is transformed into the direct voltage of regulation.Translation circuit 15 for example is made of the step-down break-and-make switch circuit with switch element, changes the conducting duty ratio of switch element according to the control command from s operation control portion 16, changes output voltage thus.
Come the break-make of control switch 17 by switch driving circuit 18 by s operation control portion 16, the direct current of transformation into itself's circuit 15 is supplied with battery 13 off and on through charging resistor 19 in the future, thereby battery 13 is carried out intermittent charge, and switch 17 for example makes field-effect transistors FET.
S operation control portion 16 for example is made of microcomputer, and the break-make of control switch 17 is carried out the intermittent charge of battery 13.At this moment, to translation circuit 15 output control commands, adjust the output voltage of translation circuit 15.In addition, input to s operation control portion 16 from the charging current of translation circuit 15 after current detector 20 detects, similarly, the cell voltage of battery 13 inputs to s operation control portion 16 after voltage detector 21 detects.
Charging current I, the battery voltage detector that s operation control portion 16 is detected according to current detector 20 is boost charge that voltage detector 21 detects cell voltage, the cell voltage when this boost charge finishes when beginning, try to achieve the internal driving analog value of battery 13, and when this is worth more than or equal to setting, is judged to be battery life and arrives.Afterwards, with the battery life of s operation control portion 16 to result of determination export to output device 22.Output device 22 for example is being judged as battery life then, the demonstration of lighting a lamp on display etc.
Fig. 2 is the structured flowchart of 16 1 examples of expression s operation control.S operation control portion 16 will be used for the charging figure that battery 13 carries out intermittent charge is stored in charging graphics memory portion 23 in advance, on-off control unit 24 is exported the break-make control commands according to the charging figure that is stored in this charging graphic storage unit 23 to switch driving circuit 18, put the disconnected control that works into to split, so that battery 13 is carried out intermittent charge.That is, on-off control unit 24 carry out as the break-make of control switch 17 battery 13 intermittent charge the intermittent charge unit and move.Charging graphics memory portion 23 also can be made of timer function.
Fig. 3 is the key diagram of an example of charging figure.For new battery 13, be in fully charged state at the interval T0 of initial charge at first, the interval T1 of stopping of charging is set thereafter, through behind this interval T1 that stops, interval T2 is in fully charged state in boost charge.That is, the capacity that reduces because of self discharge replenish the interval T1 that stops in the interval T2 of boost charge during repeats this action and carries out boost charge, so that remain roughly fully charged state.
Here, in embodiments of the present invention,, can be suppressed to the caused self discharge amount of the self discharge in the interval of stopping less by shortening the stop interval T1 and the interval T2 of boost charge of boost charge.For example, with the interval T2 of boost charge (ON time of switch) be set in 3 seconds with interior or 30 seconds in, the interval T1 that will stop (opening time of switch) sets in 30 seconds to 3 minutes.Thus, shortened the interval T1 that stops, so, can be suppressed to the self discharge amount that causes by self discharge less.And, can shorten the interval T2 of boost charge, reduce the situation of under fully charged state, overcharging, can realize the long lifetime of battery.In addition, be configured to suppress the self discharge amount in 3 minutes the time in 30 seconds, therefore,, the power supply of light source 14 supplied with also can be carried out aptly even under the situation that takes place between stand-down to have a power failure, battery 13 also is in the state that is close to full charging in opening time.
Then, the internal driving arithmetic element 25 of s operation control portion 16, from boost charge zero hour of the interval T2 of on-off control unit 24 input boost charges separately and boost charge finish time, and in the intermittent charge of battery 13, when carrying out boost charge, cell voltage V2 when the cell voltage V1 when the boost charge of voltage detector 21 input batteries 13 begins and this boost charge finish, in addition, from current detector 20 input charging current I.
Fig. 4 is the key diagram of the operation content of internal driving arithmetic element 25.In internal driving arithmetic element 25, potential difference Δ V (V1-V2) between the cell voltage V2 when cell voltage V1 when obtaining boost charge and beginning and this boost charge finish, and obtain the value that this potential difference Δ V (V1-V2) obtains divided by charging current I, that is, obtain internal driving analog value Δ R.Internal driving analog value Δ R by internal driving arithmetic element 25 is obtained is kept in the operation result storage part 26 by the time sequence.
Life-span judging unit 27 relatively is stored in the internal driving analog value Δ R in the operation result memory cell 26 and is stored in setting in the setting storage part 28 in advance, and this comparative result stored in the operation result storage part 26, and, as internal driving analog value Δ R during more than or equal to setting, the life-span that is judged to be battery arrives, and to output device 22 these information of output.At this, be stored in setting in the setting storage part 28 in advance and be the internal driving analog value Δ R0 in the life-span that is used to judge battery 13, for example, be to make the light source 14 of lighting device under the situation of the illumination that satisfies stipulated standard, light 20 minutes internal driving analog value continuously, or the life-span internal driving analog value then of hypothesis battery 13.This internal driving analog value Δ R0 sets as fixed value in advance according to the kind of battery 13.
So, the internal driving analog value Δ R in the boost charge in the continuous monitoring intermittent charge arrives when internal driving analog value Δ R is judged as the life-span during more than or equal to certain value.Because obtain that the computing of internal driving analog value Δ R is needed, the time difference of the cell voltage V2 when the cell voltage V1 when boost charge begins and this boost charge finish is the interval T2 of boost charge, it is the short time, therefore, can under the state that is subjected to the environment temperature variable effect hardly, calculate internal driving analog value Δ R.Therefore, do not need the internal driving analog value Δ R that calculates is carried out temperature-compensating, can obtain internal driving analog value Δ R easy and accurately.And, not with the internal driving analog value at initial stage but compare with predetermined setting, carry out the judgement of end of lifetime, therefore, when calculating the internal driving analog value, needn't be modified to the internal driving analog value under the condition identical with the measuring condition of the internal driving analog value at initial stage.
And, under the few situation of the change of charging current I, can suitably use charging current I as the set point storage in advance, in the case, also can not use current detector 20.
Fig. 5 is another routine key diagram of charging figure.When battery 13 is new, shown in Fig. 5 (a), the interval T1 that will stop sets for long and the number of times of minimizing boost charge, between the operating period according to battery 13, shown in Fig. 5 (b), Fig. 5 (c), shorten the number of times that stops interval T1 and increase boost charge at leisure.
When battery 13 is new,, also can keep fully charged state even reduce the number of times of boost charge.In addition, if under fully charged state, overcharge, then the deterioration of battery 13 in advance, the lost of life.Therefore, when battery 13 was new, the interval T1 that will stop sets for long and reduces the number of times of boost charge, and was elongated between the operating period along with battery 13, shortens the number of times that stops interval T1 and increase boost charge at leisure.For example, be under the situation in 4 to 5 years when the average life span of battery 13, charging figure with Fig. 5 (a) in the period of initial 1.5 carries out boost charge, and the charging figure with Fig. 5 (b) in the period of next 1.5 carries out boost charge, uses the charging figure of Fig. 5 (c) to charge afterwards.This charging figure also can be made of timer function.
Fig. 6 is another routine structured flowchart of expression s operation control portion 16.In s operation control portion 16 shown in Figure 2, append voltage comparison unit 30 is set, be used for comparison by voltage detector 21 detected cell voltage V and the setting V0 that is set in voltage setting device 29, when cell voltage V surpassed setting, omitting the intermittent charge unit was the boost charge at least one cycle of the intermittent charge in the on-off control unit 24.For the element annotation same tag identical, and omitted the explanation that repeats with key element shown in Figure 3.
When voltage comparison unit 30 input boost charges begin by voltage detector 21 detected cell voltage V, and it is compared with the setting V0 that is set in the voltage setting device 29.And, when the cell voltage V when boost charge begins surpasses setting, omit the boost charge of following one-period.Thus, the situation of overcharging under fully charged state reduces, and can realize the long lifetime of battery 13, can also save energy.
Fig. 7 is the flow chart that is illustrated in the s operation control portion 16 contents processing of the intermittent charge that the cell voltage V when beginning according to boost charge carries out.At first, judge whether to arrive the boost charge zero hour (S1) according to the charging figure, when to boost charge during the zero hour, input is from the cell voltage (S2) of voltage detector 21, and the cell voltage (S3) the when cell voltage of this input begun as boost charge.Then, utilize voltage comparison unit 30 to judge whether the cell voltage V when boost charge begins surpasses the setting V0 (S4) that is set in the voltage setting device 29, when the cell voltage V when boost charge begins surpasses setting V0, postpone the time (S5) of 1 cycle (the T1+T2)+Δ T of intermittent charge.Wherein, Δ T is the spacious and comfortable time that is used for positively omitting 1 cycle of intermittent charge.Then, confirm that the action of intermittent charge there is not end, and turn back to step S1 (S6).Thus, the boost charge in the omission next cycle.
On the other hand, in the processing of step S4, when the cell voltage V when boost charge begins does not surpass the setting V0 that is set in the voltage setting device 29, by on-off control unit 24 beginning boost charges (S7).Then, judge whether the boost charge under this cycle finishes (S8), when the boost charge under this cycle had finished, input was from the cell voltage (S9) of voltage detector 21, with charge as a supplement cell voltage (S10) when finishing of the cell voltage of this input.Then, confirm that the action of intermittent charge there is not end, turn back to step S1 (S11).
Cell voltage when the boost charge that obtains at step S3 begins and the cell voltage when the boost charge that step S10 obtains finishes are imported in the internal driving arithmetic element 25, calculate internal driving analog value Δ R.So, when the cell voltage V when boost charge begins surpasses setting V0, omit the boost charge in 1 cycle.
In the above description, when boost charge voltage V surpasses setting V0, the boost charge of having omitted next cycle, but also can omit the boost charge in 2 cycles.For example, also can when surpassing setting V0, cell voltage V consider the service time of battery 13; And when battery 13 is new, shown in Fig. 5 (a), omit the boost charge in 2 cycles; Through after specified time limit, shown in Fig. 5 (b), omit the boost charge in 1 cycle.And for example can be managed by timer function the service time of battery 13.
Fig. 8 is the flow chart of contents processing in the s operation control portion 16 of this occasion of expression.In Fig. 8, step S12 and step S13 on the basis of Fig. 7, have been appended.To the step mark same reference numerals identical, and omit its explanation with step among Fig. 7.
Promptly, in the judgement of step S4, when the cell voltage V when boost charge begins surpasses setting V0, whether the up time of judging battery is more than or equal to specified time limit (S12), when more than or equal to specified time limit the time, postpone the time (S13) of 2 cycles 2 (the T1+T2)+Δ T of intermittent charge.At this, Δ T is the time more than needed that is used for positively omitting 2 cycles of intermittent charge.When up time of battery is less than specified time limit, postpone the time (S5) of 1 cycle (the T1+T2)+Δ T of intermittent charge.Wherein, Δ T is the spacious and comfortable time that is used for positively omitting 1 cycle of intermittent charge.After above-mentioned steps S13 or S5, confirm that the intermittent charge action does not finish, and turn back to step S1 (S6).Thus, the boost charge in the omission next cycle.
So, when the cell voltage V when boost charge begins surpasses setting V0, consider the service time of battery 13; When battery 13 is new, shown in Fig. 5 (a), omit the boost charge in 2 cycles; Through after specified time limit, shown in Fig. 5 (b), omit the boost charge in 1 cycle.Therefore, when not needing to carry out boost charge, omit boost charge, therefore, can save electric power.In addition, because the boost charge can omit battery and be fully charged state the time, so can realize the long lifetime of battery.
According to the embodiment of the present invention, can under the state of the influence that changed by environment temperature, calculate the internal driving analog value, so do not need the internal driving analog value of being calculated is carried out temperature-compensating, can obtain the internal driving analog value easy and accurately.In addition, not with the internal driving analog value at initial stage but compare, carry out the judgement of end of lifetime with predefined setting, so, the internal driving analog value that does not need corrected Calculation to go out.Therefore,, also can judge battery life aptly, can easily carry out the end of lifetime of battery 13 and judge, and notify the user even do not make battery 13 discharges.
In addition, can shorten the interval of stopping of boost charge interval and boost charge, so, in the interval of stopping of boost charge, will be suppressed to less because of the self discharge amount that self discharge causes, even when between stand-down, taking place to have a power failure, also battery can be remained on almost fully charged state.Moreover, when not needing boost charge, omit boost charge, so, can save energy, realize the long lifetime of battery.

Claims (4)

1. charging circuit, it is characterized in that having: translation circuit will become direct voltage from the AC voltage conversion of source power supply; Switch, may command is from the power supply of above-mentioned translation circuit to battery; The intermittent charge unit makes above-mentioned switch on and off, carries out the intermittent charge of above-mentioned battery; The battery voltage detection unit, the cell voltage the when boost charge when detection is carried out intermittent charge with above-mentioned intermittent charge unit begins; And voltage comparison unit, when cell voltage detected by above-mentioned battery voltage detection unit, when boost charge begins surpasses setting, omit the boost charge at least one cycle of the intermittent charge in the above-mentioned intermittent charge unit,
The ON time of the boost charge of above-mentioned intermittent charge unit after with the full charging of above-mentioned battery be set in 3 seconds with interior, turn-off time be set at 30 seconds~in 3 minutes.
2. charging circuit, it is characterized in that having: translation circuit will become direct voltage from the AC voltage conversion of source power supply; Switch, may command is from the power supply of above-mentioned translation circuit to battery; The intermittent charge unit makes above-mentioned switch on and off, carries out the intermittent charge of above-mentioned battery; The battery voltage detection unit, the cell voltage the when boost charge when detection is carried out intermittent charge with above-mentioned intermittent charge unit begins; And voltage comparison unit, when cell voltage detected by above-mentioned battery voltage detection unit, when boost charge begins surpasses setting, omit the boost charge at least one cycle of the intermittent charge in the above-mentioned intermittent charge unit,
The ON time of the boost charge of above-mentioned intermittent charge unit after with the full charging of above-mentioned battery be set in 30 seconds with interior, turn-off time be set at 30 seconds~in 3 minutes.
3. an emergency ignition device is characterized in that having: as each described charging circuit in the claim 1,2; Carried out the battery of intermittent charge by above-mentioned charging circuit; And ignition device, when having a power failure, utilize the power supply point bright light source of supplying with by above-mentioned battery.
4. a lighting device is characterized in that having: apparatus body; Be located at the light source on the utensil; And, emergency ignition device as claimed in claim 3.
CNB2004100923145A 2003-11-06 2004-11-08 Charging circuit, urgent lighting device and luminous device Expired - Fee Related CN100379114C (en)

Applications Claiming Priority (4)

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JP2003376390 2003-11-06
JP376390/2003 2003-11-06
JP278553/2004 2004-09-24
JP2004278553A JP4379283B2 (en) 2003-11-06 2004-09-24 Charging circuit, emergency lighting device and lighting device

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CN100379114C true CN100379114C (en) 2008-04-02

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102938477B (en) * 2011-08-15 2015-04-08 西门子公司 Charging method and apparatus for storage battery
JP6214032B2 (en) * 2013-08-08 2017-10-18 東芝テック株式会社 Charge control device and program
KR102255490B1 (en) * 2018-01-03 2021-05-24 주식회사 엘지에너지솔루션 battery management system and method for optimizing an internal resistance of a battery
JP7231346B2 (en) * 2018-07-12 2023-03-01 Fdk株式会社 Method for determining lifetime of power storage system, and power storage system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06339234A (en) * 1993-05-28 1994-12-06 Shin Kobe Electric Mach Co Ltd Charge controller
JP2000236632A (en) * 1999-02-15 2000-08-29 Matsushita Electric Works Ltd Charger and luminaire with charger
JP2003304647A (en) * 2002-04-10 2003-10-24 Matsushita Electric Works Ltd Charging device
JP2003304648A (en) * 2002-04-10 2003-10-24 Matsushita Electric Works Ltd Charging device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06339234A (en) * 1993-05-28 1994-12-06 Shin Kobe Electric Mach Co Ltd Charge controller
JP2000236632A (en) * 1999-02-15 2000-08-29 Matsushita Electric Works Ltd Charger and luminaire with charger
JP2003304647A (en) * 2002-04-10 2003-10-24 Matsushita Electric Works Ltd Charging device
JP2003304648A (en) * 2002-04-10 2003-10-24 Matsushita Electric Works Ltd Charging device

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