CN201270424Y - Charger for automatically recognizing battery - Google Patents
Charger for automatically recognizing battery Download PDFInfo
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- CN201270424Y CN201270424Y CNU2008201600027U CN200820160002U CN201270424Y CN 201270424 Y CN201270424 Y CN 201270424Y CN U2008201600027 U CNU2008201600027 U CN U2008201600027U CN 200820160002 U CN200820160002 U CN 200820160002U CN 201270424 Y CN201270424 Y CN 201270424Y
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- battery
- chip microcomputer
- voltage
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- charger
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a battery charger, in particular to a charger which can automatically identify batteries. The charger which can automatically identity batteries comprises a transformer, a rectifier, a controlled silicon, an electric current detector, a singlechip and a voltage detector, wherein the controlled silicon is respectively connected with the transformer and the singlechip, and converts alternating current output by the transformer into constant direct current to supply to batteries, the electric current detector is respectively connected with the controlled silicon and the singlechip, the electric current detector detects electric current of a charging battery at any time, and feeds back electric current signals to the singlechip, the singlechip is connected between the rectifier and the voltage detector, the singlechip is used to judge the type and the volume of a battery, and outputs control signals for adjusting the conducting time of the controlled silicon, the voltage detector monitors voltages on two ends of the charging battery at any time, and feeds back voltage information to the singlechip. The charger can automatically judge the types of batteries, can control time and volume of charging current, and can charge for batteries with different types.
Description
Technical field
The utility model relates to a kind of battery charger, particularly a kind of charger of automatic identification battery.
Background technology
Along with social progress, the raising step by step of material life need provide the high-grade electronic goods, portable power tool etc. of the energy also more and more with battery.But different equipment, instrument need the voltage of distribution pond and battery also inequality, and the capacity of battery is also different, and the capacity of lead-acid battery particularly arrives the hundreds of ampere-hour greatly for a short time to several ampere-hours, and is various in style.For waste material not, the most of batteries that nowadays use all are rechargeable battery, but for the battery of each kind, almost are that every kind of charger also can only corresponding fill a kind of or closes on the battery of several capacity.Otherwise the charger that adopts little electric current is towards jumbo battery, and the charging interval is oversize; The large current charge device overcharges easily towards the battery of low capacity, also damages battery easily.So not only causing has various chargers in the family, both wasted resource, and increases consumer's consumer cost, also makes troubles to the consumer simultaneously.
Summary of the invention
At above-mentioned technical problem, the purpose of this utility model provides a kind of charger of automatic identification battery, and it is by judging cell types, and may command charging current time and size can be charged to multiple different types of battery.
The technical scheme that realizes the utility model purpose is as follows: comprise transformer, rectifier, controllable silicon, current detector, single-chip microcomputer and voltage detector; Controllable silicon is connected with transformer and single-chip microcomputer respectively, and the direct current that the alternating current that controllable silicon is exported transformer converts stable constant current to offers battery; Current detector is connected with controllable silicon and single-chip microcomputer respectively, and current detector detects the electric current of rechargeable battery constantly, and this current signal is fed back to single-chip microcomputer; Single-chip microcomputer is connected between rectifier and the voltage detector, and single-chip microcomputer is used to judge cell types and capacity, and the output control signal is adjusted the controllable silicon ON time; Voltage detector is monitored the voltage at rechargeable battery two ends constantly, and this information of voltage is fed back to single-chip microcomputer.
Described transformer has major and minor output winding, and wherein main output winding is connected with controllable silicon, and secondary output winding is connected with rectifier.
Adopted such scheme, by the detected voltage signal of voltage detector, and with this signal feedback to single-chip microcomputer, for single-chip microcomputer cell types being judged provides foundation; By the current signal of current detector feedback, big or small control provides foundation to the charging current of battery for single-chip microcomputer.The time that makes the control signal control controllable silicon conducting that single-chip microcomputer output is different like this, the electric current of the different sizes of controllable silicon output is charged to battery, be single-chip microcomputer after having judged cell types, automatically select to enter different charged states, Ni-MH battery adopts the constant voltage charge pattern; Lithium battery adopts the two-part charging modes, earlier battery is carried out the charging of constant current constant voltage, when battery is full of soon, enters floating charge state; Lead-acid battery adopts the syllogic charging modes, first constant current charge, and constant voltage charge enters floating charge state at last then.Judge cell types, and after entering different charge modes, then the rated capacity of battery is judged, select suitable current to charge at last.
In sum, the beneficial effects of the utility model are: the characteristic according to different batteries adopts different charging modes, guarantees to protect battery to be hurt less to the full extent; At different battery capacities, adopt different charging currents; To battery charge, prevent the jumbo battery of filling of little electric current with the charging current of the best, the charging interval is oversize, and big electric current fills the battery of low capacity, damages the end that covers of battery easily.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Embodiment
With reference to Fig. 1, the charger of automatic identification battery of the present utility model comprises transformer 1, rectifier 2, controllable silicon 3, current detector 4, single-chip microcomputer 5 and voltage detector 6.Transformer 1 is an Industrial Frequency Transformer, and its output has major and minor output winding, and wherein main output winding is connected with controllable silicon 3, is recharged battery through offering after controllable silicon 3 rectifications; Secondary output winding is connected with rectifier 2, offers single-chip microcomputer 5 behind rectifier rectification.Controllable silicon 3 is connected with transformer 1 and single-chip microcomputer respectively, and controllable silicon 3 is adjusted the silicon controlled ON time according to the instruction of single-chip microcomputer 5, convert the interchange of transformer output to direct current, and, export stable voltage and constant electric current, to offer battery by copped wave.Current detector 4 is connected with controllable silicon and single-chip microcomputer respectively, current detector detects the electric current of rechargeable battery constantly, and this current signal fed back to single-chip microcomputer, single-chip microcomputer is made corresponding adjustment according to different states, for example in constant current state, according to the electric current in the circuit that records constantly, when electric current is bigger than normal, the minimizing silicon controlled ON time that single-chip microcomputer is suitable; When electric current was less than normal, the prolongation silicon controlled ON time that single-chip microcomputer is suitable made charging current reach constant effect.Single-chip microcomputer 5 is connected between rectifier 2 and the voltage detector 6, and single-chip microcomputer 5 is used to judge cell types and capacity, and the output control signal is adjusted the controllable silicon ON time.For example the specified terminal voltage of Ni-MH battery is 1.2V, and the specified terminal voltage of lithium battery is 3.6V, and the terminal voltage of lead-acid battery is 12V.Its judgment standard is: is Ni-MH battery greater than 0.9V less than 1.5V, is lithium battery greater than 2.8V less than 4.5V, is lead-acid battery greater than 9.6V less than 15V.Single-chip microcomputer is according to different battery types, enter different charged states automatically after, at last the rated capacity of battery is judged.The unit of the capacity of battery is AH (ampere-hour) or mAH (MAH), and the meaning of its expression is: electric current and time long-pending.Lead-acid battery that indicates 20AH for example, its meaning is: adopt the constant current of 2A that battery is discharged, can put 10 hours; The charging curve of the battery of same type is consistent, and promptly how many batteries of same type is regardless of rated capacity, and when same saturation, corresponding voltage is consistent.For example: the lead-acid battery of two 20AH and 40AH, when voltage was 12.3V, corresponding battery capacity was 10AH and 20AH, and the charging saturation all is 50%, and this is the charge characteristic of battery.Voltage detector 6 is monitored the voltage at rechargeable battery two ends constantly, and this information of voltage is fed back to single-chip microcomputer, makes corresponding adjustment for single-chip microcomputer according to different states.As when the pressure constant state, because voltage that constantly can the test battery two ends, when voltage is higher, the minimizing silicon controlled ON time that single-chip microcomputer is suitable; When voltage was on the low side, the prolongation silicon controlled ON time that single-chip microcomputer is suitable made charging voltage reach constant effect.
The course of work of charger of the present utility model is: energized, output to controllable silicon and rectifier through transformer, and wherein the electric current through controllable silicon, current detector outputs to the port of battery charge; After the rectifier rectification voltage stabilizing, provide a stable power to single-chip microcomputer.
Through the above-mentioned course of work, at first cell types is judged that detailed process is as follows:
Do not have battery as charging port, voltage detector 6 detects less than voltage, and single-chip microcomputer 5 can't be judged battery types, and single-chip microcomputer does not have a control signal output controllable silicon, and controllable silicon is in closed condition, causes whole charger no-output.This moment, the output port of charger can short circuit, and charger is not had influence.If the charging port battery plus-negative plate connects instead, voltage detector detects negative pressure, and single-chip microcomputer can't be judged battery types, no control signal outputs to controllable silicon, controllable silicon still is in closed condition, causes whole charger no-output, can not carry out reverse charge to battery.Detect voltage as voltage detector, single-chip microcomputer is judged cell types according to voltage, and its basis for estimation is:
Is Ni-MH battery greater than 0.9V less than 1.5V;
Is lithium battery greater than 2.8V less than 4.5V;
Is lead-acid battery greater than 9.6V less than 15V.
The second, according to different battery types, enter different charged states automatically, the state separately of various batteries is: Ni-MH battery adopts the constant voltage charge pattern.Lithium battery adopts the two-part charging modes, promptly earlier lithium battery is carried out the charging of constant current constant voltage, when detecting lithium battery and being full of soon, enters floating charge state.Lead-acid battery adopts the syllogic charging modes, first constant current charge, and constant voltage charge enters floating charge state at last then.Charged state is controlled by single-chip microcomputer.
The 3rd, the method for the judgement of battery capacity is:
Ni-MH battery: test out the terminal voltage that is recharged the pond earlier, with 100mA constant electric current, to battery charge 3min, the terminal voltage of test battery this moment then, the charging curve of contrast Ni-MH battery calculates the rated capacity of battery, and this moment battery saturation.
Lithium battery: test out the terminal voltage that is recharged the pond earlier, with 50mA constant electric current, to battery charge 10min, the terminal voltage of test battery this moment then, the charging curve of contrast lithium battery calculates the rated capacity of battery, and this moment battery saturation.
Lead-acid battery: test out the terminal voltage that is recharged the pond earlier, with the constant electric current of 2000mA, to battery charge 5min, test the terminal voltage of battery this moment then, contrast charging lead-acid cells curve, calculate the present saturation of the rated capacity of battery and battery under the situation that battery types, capacity, charge mode are all determined, battery is charged normal.
The 4th, battery is charged:
Ni-MH battery: the constant voltage with 1.45V is charged to it, and when the voltage of battery slowly raise, charging current just slowly reduced, and closes on when being full of, and charging current drops to tens milliamperes; Stable voltage guarantees that battery can not occur because of the fluctuation of electrical network overcharging, under-voltage condition.
Lithium battery: charging with the constant voltage of 4.2V and 0.1C constant current, (wherein C represents the rated capacity of battery; 0.1C be meant with ten times of speed to battery charge; Promptly with ten hours battery is full of at theoretical state; 0.1C size of current be 1/10th of rated capacity.For example: two batteries of existing 60AH and 120AH, the size of current that 0.1C represents, concerning the battery of 60AH, electric current is 6A; Concerning the battery of 120AH, electric current is 12A), constant voltage guarantees that overcharging can not appear in battery, under-voltage state, constant electric current can protect battery when initial charged state, can not produce big initial charge stream, has protected the chip of lithium battery interior; When battery is full of soon, enter floating charge state automatically.
Lead-acid battery: initial condition, adopt 0.1C constant current battery is charged, voltage rises step by step, prevent from just to fill the time, big electric current damages battery pole plates; When the saturation of battery surpasses 70% ~ 75%, should adopt the charging modes of constant voltage, electric current reduces step by step, and when preventing to be full of soon, charging voltage surpasses the bearing value of battery, and damages battery; When the saturation of battery surpasses 90% ~ 95%, enter floating charge state, adopt the charging modes of trickle.
Claims (2)
1. a charger of discerning battery automatically comprises transformer, rectifier, it is characterized in that: also comprise controllable silicon, current detector, single-chip microcomputer and voltage detector; Controllable silicon is connected with transformer and single-chip microcomputer respectively, and controllable silicon converts the alternating current of transformer output to constant DC and offers and be recharged battery; Current detector is connected with controllable silicon and single-chip microcomputer respectively, and current detector detects the electric current of rechargeable battery constantly, and this current signal is fed back to single-chip microcomputer; Single-chip microcomputer is connected between rectifier and the voltage detector, and single-chip microcomputer is used to judge cell types and capacity, and the output control signal is adjusted the controllable silicon ON time; Voltage detector is monitored the voltage at rechargeable battery two ends constantly, and this information of voltage is fed back to single-chip microcomputer.
2. the charger of automatic identification battery according to claim 1 is characterized in that: described transformer has major and minor output winding, and wherein main output winding is connected with controllable silicon, and secondary output winding is connected with rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201600027U CN201270424Y (en) | 2008-09-25 | 2008-09-25 | Charger for automatically recognizing battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201600027U CN201270424Y (en) | 2008-09-25 | 2008-09-25 | Charger for automatically recognizing battery |
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| Publication Number | Publication Date |
|---|---|
| CN201270424Y true CN201270424Y (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201600027U Expired - Fee Related CN201270424Y (en) | 2008-09-25 | 2008-09-25 | Charger for automatically recognizing battery |
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| CN (1) | CN201270424Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842739A (en) * | 2011-06-22 | 2012-12-26 | 中兴通讯股份有限公司 | Battery charging method, apparatus, and system |
| CN103296327A (en) * | 2013-05-09 | 2013-09-11 | 陈平 | Method for realizing intelligent charging |
-
2008
- 2008-09-25 CN CNU2008201600027U patent/CN201270424Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842739A (en) * | 2011-06-22 | 2012-12-26 | 中兴通讯股份有限公司 | Battery charging method, apparatus, and system |
| WO2012174796A1 (en) * | 2011-06-22 | 2012-12-27 | 中兴通讯股份有限公司 | Method, apparatus and system for charging battery |
| CN103296327A (en) * | 2013-05-09 | 2013-09-11 | 陈平 | Method for realizing intelligent charging |
| CN103296327B (en) * | 2013-05-09 | 2016-01-20 | 陈平 | Realize the method for intelligent charge |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20130925 |