CN101388553A - Current charger - Google Patents
Current charger Download PDFInfo
- Publication number
- CN101388553A CN101388553A CNA200710045801XA CN200710045801A CN101388553A CN 101388553 A CN101388553 A CN 101388553A CN A200710045801X A CNA200710045801X A CN A200710045801XA CN 200710045801 A CN200710045801 A CN 200710045801A CN 101388553 A CN101388553 A CN 101388553A
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- Prior art keywords
- circuit
- charging
- battery
- current
- constant
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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 invention relates to a battery charger, which relates to the technical field of charging, and solves the technical problem that a single battery can not be independently charged and a battery is easy to heat. The battery charger comprises a power supply circuit, a charging circuit, a charging control circuit and a status indicating circuit, which is characterized in the charging control circuit comprises a singlechip, a constant-current control circuit and a battery sampling circuit, wherein the charging circuit is provided with at least two independent charging circuits, the charging current of the charging circuit is supplied by the constant-current control circuit, the battery sampling circuit inputs the sampling data of each battery to the singlechip, and the singlechip controls the charging current of the constant-current charging circuit and the charging voltage of each independent charging circuit according to the sampling data. The battery charger can independently charge for a single battery, can guarantee the accuracy of charging control, can not lead a battery to be insufficiently charged or overcharged, can not be influenced by voltage fluctuation when in charging, the charging efficiency is high, and the temperature rise of circuits is low.
Description
Technical field
The technology that the present invention relates to charge particularly relates to a kind of technology of battery charger.
Background technology
Existing battery charger must per two batteries fill when charging together in pairs; can't carry out charge independence to single battery; even but same brand; the battery of same capacity; in use the performance of battery also some differences can occur; if in charging process, every batteries is not carried out independent control; that just is difficult to guarantee the accuracy of charging control; because when battery is charged in pairs; when a batteries can occur and be full of and another batteries may also not be full of or overcharge; so long-term use; extremely unfavorable to battery life; and owing to the voltage of external power source can fluctuate usually; so have the low and battery of charge efficiency problem such as heating easily, had a strong impact on the useful life of battery.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides a kind ofly can carry out charge independence to single battery, can guarantee the accuracy of charging control, can not make battery situation occur owing to fill or overcharge, and when charging, not influenced by voltage fluctuation, the charge efficiency height, the battery charger that the circuit temperature rise is low.
In order to solve the problems of the technologies described above, a kind of battery charger provided by the present invention, comprise power-supplying circuit, charging circuit, charging control circuit and condition indication circuit, it is characterized in that: described charging control circuit comprises single-chip microcomputer, constant-current control circuit and battery sampling circuit, described charging circuit is provided with at least two charge independence circuit, the charging current of charging circuit is provided by constant-current control circuit, the battery sampling circuit is input to single-chip microcomputer to the sampled data of each battery, and single-chip microcomputer is according to the charging current of sampled data control constant-current control circuit and the charging voltage of each charge independence circuit.
Further, described battery sampling circuit comprises battery current sample circuit and at least two battery voltage sampling circuit, and each charge independence circuit is corresponding to be provided with a battery voltage sampling circuit.
Further, described power supply power supply road is provided with filter circuit and voltage stabilizing circuit.
Utilize battery charger provided by the invention, owing to adopt the current constant mode charging, the charge efficiency height, the circuit temperature rise is low; Utilize the battery sampling circuit to monitor charging current and charging voltage in real time, control the size of constant current charge electric current and charging voltage by single-chip microcomputer, can the better protection battery, prolong the useful life of battery; Every batteries has been adopted the charge independence circuit, can carry out charge independence and control, guaranteed the accuracy of charging control, can not make battery situation occur owing to fill or overcharge single battery.
Description of drawings
Fig. 1 is the schematic diagram of charger of the present invention;
Fig. 2 is the power-supplying circuit and the constant-current control circuit figure of charger of the present invention;
Fig. 3 is the single-chip microcomputer and the battery current sample circuit figure of charger of the present invention;
Fig. 4-Fig. 7 is four charge independence circuit and four and the corresponding battery voltage sampling circuit diagram of charge independence circuit of charger of the present invention;
Fig. 8 is the condition indication circuit figure of charger of the present invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As Fig. 1-shown in Figure 8, a kind of battery charger that the embodiment of the invention provided, comprise power-supplying circuit, charging circuit, charging control circuit and condition indication circuit, it is characterized in that: described charging control circuit comprises single-chip microcomputer, constant-current control circuit and battery sampling circuit, described charging circuit is provided with four charge independence circuit, the charging current of charging circuit is provided by constant-current control circuit, the battery sampling circuit is input to single-chip microcomputer to the sampled data of each battery, and single-chip microcomputer is according to the charging current of sampled data control constant-current control circuit and the charging voltage of each charge independence circuit.
The battery sampling circuit comprises battery current sample circuit and four battery voltage sampling circuit, and each charge independence circuit is corresponding to be provided with a battery voltage sampling circuit.
Power supply power supply road is provided with filter circuit and voltage stabilizing circuit.
As shown in Figure 2, in the power-supplying circuit, power supply VCC imports behind fuse F1, capacitor C 1 is in parallel with C2, C3 is in parallel with C4, C5 and C6 compose in parallel three filter circuits to power filter, and diode D1, resistance R 5, pressurizer U1 and two filter circuits are formed voltage stabilizing circuits provides stabilized power supply to single-chip microcomputer.
Triode Q1, Q2, Q3, metal-oxide-semiconductor Q8, inductance L 1, diode D2, capacitor C 10, resistance R 1, R2, R3, R4 forms constant-current control circuit, single-chip microcomputer current controling signal PWM2 connects the Q1 base stage through R2, the Q1 base stage connects the Q1 emitter to ground through R3, the Q1 collector electrode connects power supply behind R1, the Q2 collector electrode connects power supply, base stage connects the Q1 collector electrode, emitter connects the Q8 grid, the Q3 emitter connects the Q8 grid, and grounded collector, base stage connect the Q1 collector electrode, the Q8 drain electrode connects the input power supply, source electrode continues and flows diode D2 negative pole, D2 plus earth, filter inductance L1 one termination Q8 source electrode, another termination charging circuit Vcharge, capacitor C 10 and resistance R 4 backs in parallel one end ground connection, another termination charging circuit Vcharge, input current regulate through constant-current control circuit and offer the charging circuit use.
As shown in Figure 3, resistance R 6, R7 and a sampling of capacitor C 8 compositions integrating circuit are sampled to the charging current Ibt of battery, and U2 provides sampled data for single-chip microcomputer.
Model is that the single-chip microcomputer of EM78P418N is regulated charging current according to the sampled data output current control signal PWM2 of battery current Ibt control constant-current control circuit, controls four charge independence circuit adjustment charging voltages according to sampled data output voltage control signal C1, C2, C3, the C4 of cell voltage Vbt1, Vbt2, Vbt3, Vbt4.
As shown in Figure 4, triode Q4, metal-oxide-semiconductor Q9A, diode D3, resistance R 11, R12 and battery are formed first charge independence circuit, single-chip microcomputer voltage control signal C1 connects the Q4 base stage through R12, the Q4 collector electrode connects power supply through R11, Q4 grounded emitter, the anodal charging current that inserts of diode D3, negative pole connects the Q9A drain electrode, and the Q9A source electrode connects battery BT1 positive pole, grid connects the Q4 collector electrode, and battery BT1 negative pole connects the battery current sample circuit.
Resistance R 13, R14 and capacitor C 11 are formed a dividing potential drop integrating circuit, R13 one end connects anode, the other end meets the Vbt1 of single-chip microcomputer U2, an end ground connection after R14 and the C11 parallel connection, the other end meets the Vbt1 of single-chip microcomputer U2, cell voltage after R13, R14 dividing potential drop again through the C11 integration, for single-chip microcomputer U2 provides the battery voltage sampling data.
As Fig. 5-shown in Figure 7, other three charge independence circuit, structure is identical with first charge independence circuit shown in Figure 4.
As shown in Figure 8, resistance R 27, R28 and LED 1 are formed first group of condition indication circuit, R29, R30, R31, R32, R33, R34, LED2, LED3, LED4 form three groups of condition indication circuits in addition respectively, and four groups of condition indication circuits are controlled by single-chip microcomputer U2.
After charger was connected with the mains, during no battery, the light-emitting diode of corresponding condition indication circuit did not work in arbitrary battery case, and corresponding charge independence circuit is in treats the machine testing guard mode, and whether have battery insert, prepare charging if detecting at any time.
If when having detected battery insertion battery case, by battery voltage sampling circuit and battery current sample circuit battery is sampled, single-chip microcomputer is handled the size of back output control signal control charging current and charging voltage to sampled data, the diode displaying red light of condition indication circuit corresponding with it, corresponding charge independence circuit begins battery charge, simultaneously battery is carried out complete monitoring, make battery not owe to fill not overcharge.
When detecting battery charge when full, single-chip microcomputer output control signal stops charging, the light-emitting diode prompting that gives a green light simultaneously.
Claims (3)
1, a kind of battery charger, comprise power-supplying circuit, charging circuit, charging control circuit and condition indication circuit, it is characterized in that: described charging control circuit comprises single-chip microcomputer, constant-current control circuit and battery sampling circuit, described charging circuit is provided with at least two charge independence circuit, the charging current of charging circuit is provided by constant-current control circuit, the battery sampling circuit is input to single-chip microcomputer to the sampled data of each battery, and single-chip microcomputer is according to the charging current of sampled data control constant-current control circuit and the charging voltage of each charge independence circuit.
2, battery charger according to claim 1, it is characterized in that: described battery sampling circuit comprises battery current sample circuit and at least two battery voltage sampling circuit, and each charge independence circuit is corresponding to be provided with a battery voltage sampling circuit.
3, battery charger according to claim 1 and 2 is characterized in that: described power supply power supply road is provided with filter circuit and voltage stabilizing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710045801XA CN101388553A (en) | 2007-09-11 | 2007-09-11 | Current charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710045801XA CN101388553A (en) | 2007-09-11 | 2007-09-11 | Current charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101388553A true CN101388553A (en) | 2009-03-18 |
Family
ID=40477796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710045801XA Pending CN101388553A (en) | 2007-09-11 | 2007-09-11 | Current charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101388553A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580082A (en) * | 2012-08-06 | 2014-02-12 | 海洋王照明科技股份有限公司 | Charging device |
| CN104410124A (en) * | 2014-12-01 | 2015-03-11 | 中国船舶重工集团公司第七二六研究所 | Device for constant current charge of energy-storage capacitor of depth finder |
| WO2018218972A1 (en) * | 2017-06-01 | 2018-12-06 | 深圳源创智能照明有限公司 | Solar power supply system and charging and discharging detection and regulating circuit thereof |
-
2007
- 2007-09-11 CN CNA200710045801XA patent/CN101388553A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580082A (en) * | 2012-08-06 | 2014-02-12 | 海洋王照明科技股份有限公司 | Charging device |
| CN104410124A (en) * | 2014-12-01 | 2015-03-11 | 中国船舶重工集团公司第七二六研究所 | Device for constant current charge of energy-storage capacitor of depth finder |
| WO2018218972A1 (en) * | 2017-06-01 | 2018-12-06 | 深圳源创智能照明有限公司 | Solar power supply system and charging and discharging detection and regulating circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090318 |