CN2662518Y - Fast charger for nickel-hydrogen cell - Google Patents
Fast charger for nickel-hydrogen cell Download PDFInfo
- Publication number
- CN2662518Y CN2662518Y CN 200320107087 CN200320107087U CN2662518Y CN 2662518 Y CN2662518 Y CN 2662518Y CN 200320107087 CN200320107087 CN 200320107087 CN 200320107087 U CN200320107087 U CN 200320107087U CN 2662518 Y CN2662518 Y CN 2662518Y
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- control circuit
- chip microcomputer
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Abstract
The utility model relates to a quick charger of a nickel-hydrogen battery, which comprises a battery charging circuit, a battery voltage detecting circuit and a battery current detecting circuit, and is characterized in that: the quick charger is provided with a SCM (Single Chip Microcomputer), a constant current control circuit and a battery temperature detecting circuit; the detection signals of the battery voltage detecting circuit, the battery current detecting circuit and the battery temperature detecting circuit are respectively input into the SCM, then are processed by the SCM, and the output signals control the constant current control circuit and a battery charging control circuit; the current of the battery charging control circuit is provided by the constant current control circuit. The product has the advantages of good charging speed and high efficiency, and helps extend the service life of batteries.
Description
Affiliated field
The utility model relates to a kind of Ni-MH battery quick charger.
Technical background
Existing Ni-MH battery charger can't carry out intelligent decision and handle the charging of nickel hydride charging pond, and charging rate is slow, efficient is hanged down problems such as causing the rechargable battery heating so have, and has seriously influenced the useful life that is recharged the pond.
Summary of the invention
The purpose of this utility model provides a kind of Ni-MH battery quick charger, and its charging rate is fast, efficient height, the useful life that helps improving battery.
The utility model is to constitute like this, it comprises battery charger, battery voltage detection circuit and battery charge testing circuit, it is characterized in that: be provided with single-chip microcomputer, constant-current control circuit, battery temperature testing circuit, the detection signal of battery voltage detection circuit, battery current detection circuit and battery temperature testing circuit is imported single-chip microcomputer respectively, after single-chip microcomputer is handled, output signal is controlled constant-current control circuit and battery charge control circuit respectively, and the electric current of described battery charge control circuit is provided by constant-current control circuit.
Than existing Ni-MH battery charger, remarkable advantage of the present utility model is:
1, owing to adopted single-chip microcomputer and constant-current control circuit, realizes big electric current constant current charge, significantly improved charging rate and charge efficiency battery.
2, set battery voltage detection circuit, battery charge testing circuit and battery temperature testing circuit can be through multi-faceted monitoring and the adjusting of chip microcontroller to the charging operating mode in the circuit, thereby guarantee that battery do not owe to fill not overcharge.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is an electronic-circuit diagram of the present utility model.
Specific embodiment
With reference to Fig. 1, Ni-MH battery quick charger of the present utility model, comprise battery charger, battery voltage detection circuit and battery charge testing circuit, it is characterized in that: be provided with single-chip microcomputer, constant-current control circuit, the battery temperature testing circuit, battery voltage detection circuit, the detection signal of battery current detection circuit and battery temperature testing circuit is imported single-chip microcomputer respectively, after single-chip microcomputer is handled, output signal is controlled constant-current control circuit and battery charge control circuit respectively, and the electric current of described battery charge control circuit is provided by constant-current control circuit.
Above-mentioned charger also is provided with power supply adaptor circuit, power supply stabilization circuit, control, selection key signal circuit and status display circuit, the output one tunnel of power supply adaptor circuit is connected with battery charger, another road is connected with the input of voltage stabilizing circuit, and control, selection key signal circuit are connected with the input of single-chip microcomputer.
In order to realize that a plurality of batteries are charged, described battery charge control circuit has four battery charge control circuits, described battery voltage detection circuit has four battery voltage detection circuits, described battery temperature testing circuit has four battery temperature testing circuits, and described status display circuit has the one of four states display circuit.
The concrete structure of the utility model embodiment circuit is described as follows (referring to Fig. 2):
(1) in the power supply adaptor: 3PIN Direct current power source socket JP1, the DC power supply input interface as 12V ± 30% is provided, 3 ~ 5A fuse FUSE2, diode VD1 are reverse connecting protection usefulness, capacitor C 1, C2 make power supply and consider ripple usefulness.
(2) in the constant-current control circuit: form a constant-current control circuit by U1, V2, L1, VD2 and some resistance capacitances.The U1 drain electrode connects the input power supply, and source electrode connects considers ripple inductance L 1 and fly-wheel diode VD2, draws on the resistance R 23, between U1 drain electrode and grid; Triode V2 collector electrode connects the grid of U1, and base stage is received on the I/O mouth of single-chip microcomputer U4 through resistance R 23, and resistance R 24 connects the V2 base stage to ground, and R31, capacitor C 9 connect the V2 emitter to ground, and R33, capacitor C 10, C11 one end connect inductance L 1, other end ground connection.
Offering battery charge after input current is regulated through constant-current control circuit uses.The constant current control signal is sent by single-chip microcomputer U4 I/O mouth.
(3) in the battery charge control circuit:
MOSFET pipe U2A, triode Q1, diode D1 and resistance R 4, R8 and battery interface B5 form one road charging control circuit, the U2A drain electrode meets battery interface B5 (rechargeable battery positive terminal) through diode D1, the U2A source electrode meets battery interface B5 (rechargeable battery negative pole end), triode Q1 base stage is received the I/O mouth of a single-chip microcomputer through resistance R 4, and collector electrode connects the grid of U2A;
MOSFET pipe U2B, triode Q2, diode D2 and resistance R 5, R12 and battery interface B6 form one road charging control circuit, the U2B drain electrode meets battery interface B6 (rechargeable battery positive terminal) through diode D2, the U2B source electrode meets battery interface B6 (rechargeable battery negative pole end), triode Q2 base stage is received the I/O mouth of a single-chip microcomputer through resistance R 5, and collector electrode connects the grid of U2B;
MOSFET pipe U3A, triode Q3, diode D3 and resistance R 3, R13 and battery interface B7 form one road charging control circuit, the U3A drain electrode meets battery interface B7 (rechargeable battery positive terminal) through diode D3, the U3A source electrode meets battery interface B7 (rechargeable battery negative pole end), triode Q3 base stage is received the I/O mouth of a single-chip microcomputer through resistance R 6, and collector electrode connects the grid of U3A;
MOSFET pipe U3B, triode Q4, diode D4 and resistance R 7, R14 and battery interface B8 form one road charging control circuit; U3B drain electrode meets battery interface B8 (rechargeable battery positive terminal) through diode D4, and the U3B source electrode meets battery interface B8 (rechargeable battery negative pole end), and triode Q4 base stage is received the I/O mouth of a single-chip microcomputer through resistance R 7, and collector electrode connects the grid of U3B.
Four groups of control circuits are combined as serial structure, and the U2A drain electrode connects the electric current through the input after the constant-current control circuit adjusting, and the U2B drain-source utmost point connects the source electrode of U2A, and the U3A drain electrode connects the source electrode of U2B, and the U3B drain electrode connects the source electrode of U3A.Resistance R 8, R12, R13, R14 are respectively the grid pull-up resistor of U2A, U2B, U3A, U3B, and a termination grid, the other end all connect+12 ends.
Four MOSFET pipes are controlled by single-chip processor i/o output via a triode separately in charging control circuit, in B5, B6, B7, the B8 battery interface any one the tunnel have battery the time, control corresponding MOSFET pipe is opening state when uncharged state for off-state during charging.
(4) in the power supply stabilization circuit: by triode V, resistance R 1, R2, R3, capacitor C 3, C4, integrated voltage stabilizer N1 forms, and transistor collector connects the DC power supply of input, and emitter output provides a stable power to use to single-chip microcomputer work;
(5) single-chip microcomputer comprises: single-chip microcomputer (16F818) U4, I/O expansion sheet (CD4015) U6.U4 is used for battery voltage sampling, battery charge control, and current sample, electric current constant current control, temperature sampling, control, button are handled, and state shows control; U6 is that the I/O mouth expansion of U4 is used.
(6) in the battery voltage detection circuit:
Resistance R 18, R26, capacitor C 7 is formed a dividing potential drop integrating circuit.Resistance R 18 1 ends connect battery interface B7 (rechargeable battery positive terminal) respectively, other end connecting resistance R26, capacitor C 7, and cell voltage is sampled for single-chip microcomputer U4 behind the process C7 integration through R18, R26 dividing potential drop again.D8, D10 are the I/O mouth protection diode of U4;
Resistance R 21, R22, capacitor C 8 is formed a dividing potential drop integrating circuit.Resistance R 21 1 ends connect battery interface B8 (rechargeable battery positive terminal) respectively, other end connecting resistance R22, capacitor C 8, and cell voltage is sampled for single-chip microcomputer U4 by the U6 gating after passing through the C8 integration again through R21, R22 dividing potential drop.D11, D12 are the I/O mouth protection diode of U4.
(7) in the battery charge testing circuit: by resistance R 38, R39, capacitor C 12 is formed a sampling, integrating circuit.Offer single-chip microcomputer U4 sampling.
(8) in the battery temperature testing circuit: resistance R 40 is formed No. one bleeder circuit with thermistor RT1, resistance R 41 is formed No. one bleeder circuit with thermistor RT2, resistance R 420 is formed No. one bleeder circuit with thermistor RT3, and resistance R 43 is formed No. one bleeder circuit with thermistor RT4; Capacitor C 13, C14, C15, C16 play the effect of worry ripple.Four tunnel temperature-voltage signal is all sampled for single-chip microcomputer U4 by the input of U6 gating.
(9) in the status display circuit: form four the tunnel by resistance R 34, R35, R36, R37 and four LED lamp LED1, LED2, LED3, LED4 and show indication.Four tunnel demonstrations are controlled by single-chip microcomputer U4.
(10) in control, the selection key signal circuit: by resistance R 44, R45, R46, R47, form the input of three road signals, offer single-chip microcomputer U4 and handle with switch key TS2, SW1, SW2.TS is as System self-test, and SW1 selects as AA battery or AAA battery, and SW2 is standby to do.
The concrete function explanation
After system connected with the mains, whole system is in treated the machine testing guard mode, and whether detect at any time has battery to insert, and prepared charging, prevented unexpected over-current phenomenon avoidance simultaneously.When beginning to charge, being selected by SW1 is to fill the AA battery or fill the AAA battery.
The first step: detect the identification battery;
If detect on any battery case battery arranged, discern non-rechargable battery and bad battery at once, the magnitude of voltage that samples is on the low side or higher on the low side in normal AA/AAA cell voltage, perhaps detect the internal resistance of battery and all think it is non-rechargable battery and bad battery when very big, make LED and show prompting, do not charge.When detecting non-rechargeable battery or bad battery, the LED light flicker.
Second step: preliminary filling, detect;
On the basis of the first step, detect that cell voltage is on the low side relatively, capacity when on the low side, will be to adopt few current charges, with the inner chemical reaction of activated batteries, with the protection battery; One rises to 1.0 ~ 1.2V when above when cell voltage, changes over to soon and fills.When preliminary filling charges,, cell voltage will not work as bad Battery disposal if not rising always.Prevent overvoltage simultaneously, over-current phenomenon avoidance.During good battery charge, corresponding LED light Chang Liang.
The 3rd step: fill soon, detect, differentiate;
Rechargeable battery enters when filling the stage soon, will be with the constant current charge of 1C ~ 2C, detect simultaneously cell voltage ,-parameter such as Δ V parameter, battery temperature, charging interval.The whole process supervision rechargeable battery allows battery be full of, and does not owe to fill not overcharge.Protect battery simultaneously, not overvoltage, not overcurrent, not overtime, temperature of being no more than rechargeable battery etc.; After battery was full of, corresponding LED light was gone out.
The 4th step: tiny stream fills, and detects;
After battery is full of, if battery also exists, will be with the boost charge of trickle mode, the electric quantity loss that causes to replenish battery self-discharge.While monitoring current voltage.
The utility model is novel, and is reasonable in design, and result of use is good, has bigger application value.
Claims (3)
1, a kind of Ni-MH battery quick charger, it comprises battery charger, battery voltage detection circuit and battery charge testing circuit, it is characterized in that: be provided with single-chip microcomputer, constant-current control circuit, battery temperature testing circuit, the detection signal of battery voltage detection circuit, battery current detection circuit and battery temperature testing circuit is imported single-chip microcomputer respectively, after single-chip microcomputer is handled, output signal is controlled constant-current control circuit and battery charge control circuit respectively, and the electric current of described battery charge control circuit is provided by constant-current control circuit.
2, Ni-MH battery quick charger according to claim 1, it is characterized in that: also be provided with power supply adaptor circuit, power supply stabilization circuit, control, selection key signal circuit and status display circuit, the output one tunnel of power supply adaptor circuit is connected with battery charger, another road is connected with the input of voltage stabilizing circuit, and control, selection key signal circuit are connected with the input of single-chip microcomputer.
3, Ni-MH battery quick charger according to claim 1 and 2, it is characterized in that: described battery charge control circuit has four battery charge control circuits, described battery voltage detection circuit has four battery voltage detection circuits, described battery temperature testing circuit has four battery temperature testing circuits, and described status display circuit has the one of four states display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107087 CN2662518Y (en) | 2003-11-13 | 2003-11-13 | Fast charger for nickel-hydrogen cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107087 CN2662518Y (en) | 2003-11-13 | 2003-11-13 | Fast charger for nickel-hydrogen cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2662518Y true CN2662518Y (en) | 2004-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320107087 Expired - Fee Related CN2662518Y (en) | 2003-11-13 | 2003-11-13 | Fast charger for nickel-hydrogen cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2662518Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008011760A1 (en) * | 2006-07-21 | 2008-01-31 | Shanghai Greatway Top Power Co., Ltd. | An intelligentized high-frequency charger for batteries |
| CN102879742A (en) * | 2012-09-12 | 2013-01-16 | 卢运娇 | Battery electric quantity detection circuit |
| CN103580082A (en) * | 2012-08-06 | 2014-02-12 | 海洋王照明科技股份有限公司 | Charging device |
| CN104283285A (en) * | 2014-10-28 | 2015-01-14 | 江苏惠居乐信息科技有限公司 | Charging system with detection function |
| CN105226755A (en) * | 2015-10-19 | 2016-01-06 | 安徽工程大学机电学院 | Embedded intelligence charger |
-
2003
- 2003-11-13 CN CN 200320107087 patent/CN2662518Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008011760A1 (en) * | 2006-07-21 | 2008-01-31 | Shanghai Greatway Top Power Co., Ltd. | An intelligentized high-frequency charger for batteries |
| CN103580082A (en) * | 2012-08-06 | 2014-02-12 | 海洋王照明科技股份有限公司 | Charging device |
| CN103580082B (en) * | 2012-08-06 | 2018-05-08 | 海洋王照明科技股份有限公司 | A kind of charging unit |
| CN102879742A (en) * | 2012-09-12 | 2013-01-16 | 卢运娇 | Battery electric quantity detection circuit |
| CN104283285A (en) * | 2014-10-28 | 2015-01-14 | 江苏惠居乐信息科技有限公司 | Charging system with detection function |
| CN105226755A (en) * | 2015-10-19 | 2016-01-06 | 安徽工程大学机电学院 | Embedded intelligence charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GAOTUOWEIDIANZIJISHUYOUXIAN COMPANY, SHANGHAI CITY Free format text: FORMER NAME OR ADDRESS: 20000 SHANGHAI GOTOWAY MICROELECTRONICS TECHNOLOGY LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: 200000 Shanghai high tech Microelectronics Co., Ltd. Patentee before: 20000 Shanghai high tech Microelectronics Technology Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |