CN203690960U - Intelligent charger based on AVR single-chip microcomputer - Google Patents
Intelligent charger based on AVR single-chip microcomputer Download PDFInfo
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- CN203690960U CN203690960U CN201320767222.7U CN201320767222U CN203690960U CN 203690960 U CN203690960 U CN 203690960U CN 201320767222 U CN201320767222 U CN 201320767222U CN 203690960 U CN203690960 U CN 203690960U
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- chip microcomputer
- avr single
- mouth
- charging
- rechargeable battery
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- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 claims abstract description 5
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- 238000001914 filtration Methods 0.000 claims description 13
- 102100024061 Integrator complex subunit 1 Human genes 0.000 claims description 3
- 101710092857 Integrator complex subunit 1 Proteins 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229910018095 Ni-MH Inorganic materials 0.000 description 2
- 229910018477 Ni—MH Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model relates to an intelligent charger based on an AVR single-chip microcomputer, and belongs to the technical field of electronics. PWM ports OC1A and OC1B of the AVR single-chip microcomputer are connected with an anode of a charging battery through a rectifier filter circuit. An ADC0 port of the AVR single-chip microcomputer is connected with the anode of a charging battery and the rectifier filter circuit. An ADC1 port of the AVR single-chip microcomputer is connected with a temperature sensor. An ADC2 port of the AVR single-chip microcomputer is connected between a shunt resistor and a cathode of the charging battery. An LCD display screen is connected with the AVR single-chip microcomputer through an IO port. The intelligent charger can rouse and charge the charging battery which is in low voltage, and can charge a plurality of charging batteries, and meanwhile the charger can determine an adjustment direction of PWM duty ratio and control trickle size. The charger can store charging records so as to improve battery capacity of actual use, thereby greatly simplifying peripheral circuits, reducing PCB space occupation, and reducing hardware cost.
Description
Technical field
The utility model relates to a kind of intelligent charger based on AVR single-chip microcomputer, belongs to electronic technology field.
Background technology
Nowadays, along with the appearance of increasing hand-held electric appliance, also increasing to the demand of high-performance, small size, lightweight battery charger.The lasting progress of battery technology also requires more complicated charging algorithm to realize quick, safe charging.Therefore need charging process to monitor more accurately, to shorten the charging interval, to reach maximum battery capacity, and prevent that battery from damaging.Meanwhile, the requirement of the performance to rechargeable battery and working life also constantly improves.From the commercial NI-G of the sixties in 20th century and sealed lead acid battery to ni-mh and lithium-ion technology in recent years, rechargeable battery capacity and performance have obtained development at full speed.The rechargeable battery that current various electrical equipment uses mainly contains NI-G electricity (NiCd), Ni-MH battery (NiMH), lithium battery (Li-Ion) and sealed lead acid battery (SLA) Four types.The rechargeable battery of this several types has different charging methods, and the charging method of SLA battery and lithium battery (Li-Ion) is that constant voltage process is wanted current limliting; The charging method of NiCd battery and NiMH battery is constant current anodizing process, and has several different determination methods that stop charging.
Battery charging is stored energy in chemical system and is realized by reverse chemical reaction.Due to the difference of the chemical substance using, battery has the characteristic of oneself.When design charger, to carefully understand these characteristics and damage battery to prevent from overcharging.
At present, what on market, sell at most is traveling charger, but strictly analyze from charging circuit, only have little part charger could truly be called as intelligent charger, general charger all can not be monitored to charging process (for example monitoring to charge and discharge electric current, charging voltage, temperature etc.) more accurately, to shorten the charging interval, reaches maximum battery capacity, and prevent that battery from damaging, and generally can only charge to a kind of rechargeable battery.
A kind of intelligent charger (patent No.: the charger that 200920249842.5) has related to a kind of intelligent cell control.Can realize charging quickly and safely and circuit level good, volume is little, lightweight, the advantage being convenient for carrying, but do not provide concrete technic relization scheme, and also this patent does not illustrate and can charge to multiple rechargeable battery.
Summary of the invention
For the problems referred to above, the utility model provides a kind of intelligent charger based on AVR single-chip microcomputer.
Technical solutions of the utility model are: a kind of intelligent charger based on AVR single-chip microcomputer, comprises AVR single-chip microcomputer 1, rechargeable battery 2, temperature sensor 3, shunt resistance 4, current rectifying and wave filtering circuit 5, upwards selects button 6, to select button 7, ACK button 8, discharge indicating lamp 9, charging indicator light 10, LCD display 11; The PWM port OC1A of described AVR single-chip microcomputer 1 is connected with the positive pole of rechargeable battery 2 by current rectifying and wave filtering circuit 5 with OC1B, and the ADC0 mouth of AVR single-chip microcomputer 1 is connected with the positive pole of rechargeable battery 2, current rectifying and wave filtering circuit 5, the ADC1 mouth of AVR single-chip microcomputer 2 is connected with temperature sensor 3, the ADC2 mouth of AVR single-chip microcomputer 1 is connected between shunt resistance 4 and the negative pole of rechargeable battery 2, LCD display 11 is connected with AVR single-chip microcomputer 1 by IO mouth.
Described shunt resistance 4 adopts high-precision current sampling resistor.
Describedly upwards select button 6, all adopt common touch-switch to select button 7, ACK button 8, be of a size of 6*6*5mm, upwards select button 6, be connected with INT1 mouth, ICP mouth, the OC2 mouth of AVR single-chip microcomputer 1 respectively to select button 7, ACK button 8.
Described discharge indicating lamp 9 adopts common redness two utmost point luminous tubes, one termination power of discharge indicating lamp 9, the other end is connected with the RXD mouth of AVR single-chip microcomputer 1 by resistance R 5, charging indicator light 10 adopts common green two utmost point luminous tubes, one termination power of charging indicator light 10, the other end is connected with the TXD mouth of AVR single-chip microcomputer 1 by resistance R 4.
Described LCD display 11 is selected 12864 LCDs with Chinese word library.
AVR single-chip microcomputer 1 can be selected the ATmega16 model AVR microprocessor of American ATMEL; Rechargeable battery 2 can use nickel-cadmium cell (NiCd), Ni-MH battery (NiMH), lithium battery (Li-Ion) and sealed lead acid battery (SLA) Four types; Temperature sensor 3 can be selected LM35DZ temperature sensor.
The course of work of the present utility model is: first, AVR single-chip microcomputer 1 gathers cell voltage by ADC mouth, if magnitude of voltage equals 0, prove not place rechargeable battery 2 in charger, AVR single-chip microcomputer 1 gathers cell voltage by ADC mouth again, if magnitude of voltage is greater than 0, prove that in charger, having packed rechargeable battery 2 into prepares charging, at this moment discharge indicating lamp 9 is bright, and rechargeable battery 2 is in discharge condition, charger is inserted in family expenses 220V socket at this moment charging indicator light 10 lamp flickers.Now, can grow the type to rechargeable battery 2 and charging current by ACK button 8, charging voltage arranges, enter to press after arranging accordingly and upwards select button 6 and can carry out the type of rechargeable battery 2 and charging current and charging voltage to select button 7 and carry out size and select and regulate, simultaneously, AVR single-chip microcomputer 1 passes through ADC port to rechargeable battery 2 voltages, temperature sensor 3, sample the respectively magnitude of voltage of the battery drawing of current potential between the negative pole of shunt resistance 4 and rechargeable battery 2, temperature, charging current value and electric weight show by LCD display, if exceeding certain value, battery temperature regulate PWM duty ratio to reduce charging current.Finally, judge by the voltage and the charging current value that detect rechargeable battery 2 whether battery is full of, if be full of, charging indicator light 10 lamps are long bright, represent to have charged, otherwise repeat said process.
The beneficial effects of the utility model are: thus this charger is adjusted the duty ratio control charging current of PWM by adjusting the PWM control register of AVR single-chip microcomputer, can carry out and wake charging up the rechargeable battery in low-voltage, can charge to multiple rechargeable battery; Utilize the ADC port of AVR single-chip microcomputer to monitor in real time the states such as charged battery voltage, temperature and charging current, can determine the adjustment direction of PWM duty ratio simultaneously, control trickle size; Take full advantage of the interior EEPROM of sheet of AVR single-chip microcomputer, be applied to preserve calibration coefficient and battery behavior parameter, as preserved record of charging to improve the battery capacity of actual use, simplified in large quantities peripheral circuit, reduce pcb board and taken up room, reduced hardware cost.
Brief description of the drawings
Fig. 1 is circuit connection diagram of the present utility model.
Each label in Fig. 1: 1-AVR single-chip microcomputer, 2-rechargeable battery, 3-temperature sensor, 4-shunt resistance, 5-current rectifying and wave filtering circuit, 6-upwards selects button, and 7-is to select button, 8-ACK button, 9-discharge indicating lamp, 10-charging indicator light, 11-LCD display.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, based on an intelligent charger for AVR single-chip microcomputer, comprise AVR single-chip microcomputer 1, rechargeable battery 2, temperature sensor 3, shunt resistance 4, current rectifying and wave filtering circuit 5, upwards select button 6, to select button 7, ACK button 8, discharge indicating lamp 9, charging indicator light 10, LCD display 11; The PWM port OC1A of described AVR single-chip microcomputer 1 is connected with the positive pole of rechargeable battery 2 by current rectifying and wave filtering circuit 5 with OC1B, and the ADC0 mouth of AVR single-chip microcomputer 1 is connected with the positive pole of rechargeable battery 2, current rectifying and wave filtering circuit 5, the ADC1 mouth of AVR single-chip microcomputer 2 is connected with temperature sensor 3, the ADC2 mouth of AVR single-chip microcomputer 1 is connected between shunt resistance 4 and the negative pole of rechargeable battery 2, LCD display 11 is connected with AVR single-chip microcomputer 1 by IO mouth.
Embodiment 2: as shown in Figure 1, based on an intelligent charger for AVR single-chip microcomputer, comprise AVR single-chip microcomputer 1, rechargeable battery 2, temperature sensor 3, shunt resistance 4, current rectifying and wave filtering circuit 5, upwards select button 6, to select button 7, ACK button 8, discharge indicating lamp 9, charging indicator light 10, LCD display 11; The PWM port OC1A of described AVR single-chip microcomputer 1 is connected with the positive pole of rechargeable battery 2 by current rectifying and wave filtering circuit 5 with OC1B, and the ADC0 mouth of AVR single-chip microcomputer 1 is connected with the positive pole of rechargeable battery 2, current rectifying and wave filtering circuit 5, the ADC1 mouth of AVR single-chip microcomputer 2 is connected with temperature sensor 3, the ADC2 mouth of AVR single-chip microcomputer 1 is connected between shunt resistance 4 and the negative pole of rechargeable battery 2, LCD display 11 is connected with AVR single-chip microcomputer 1 by IO mouth.
Described shunt resistance 4 adopts high-precision current sampling resistor.
Describedly upwards select button 6, all adopt common touch-switch to select button 7, ACK button 8, be of a size of 6*6*5mm, upwards select button 6, be connected with INT1 mouth, ICP mouth, the OC2 mouth of AVR single-chip microcomputer 1 respectively to select button 7, ACK button 8.
Described discharge indicating lamp 9 adopts common redness two utmost point luminous tubes, one termination power of discharge indicating lamp 9, the other end is connected with the RXD mouth of AVR single-chip microcomputer 1 by resistance R 5, charging indicator light 10 adopts common green two utmost point luminous tubes, one termination power of charging indicator light 10, the other end is connected with the TXD mouth of AVR single-chip microcomputer 1 by resistance R 4.
Described LCD display 11 is selected 12864 LCDs with Chinese word library.
By reference to the accompanying drawings specific embodiment of the utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from the utility model aim, make various variations.
Claims (5)
1. the intelligent charger based on AVR single-chip microcomputer, is characterized in that: comprise AVR single-chip microcomputer (1), rechargeable battery (2), temperature sensor (3), shunt resistance (4), current rectifying and wave filtering circuit (5), upwards select button (6), to select button (7), ACK button (8), discharge indicating lamp (9), charging indicator light (10), LCD display (11); The PWM port OC1A of described AVR single-chip microcomputer (1) is connected with the positive pole of rechargeable battery (2) by current rectifying and wave filtering circuit (5) with OC1B, and the ADC0 mouth of AVR single-chip microcomputer (1) is connected with the positive pole of rechargeable battery (2), current rectifying and wave filtering circuit (5), the ADC1 mouth of AVR single-chip microcomputer (2) is connected with temperature sensor (3), the ADC2 mouth of AVR single-chip microcomputer (1) is connected between shunt resistance (4) and the negative pole of rechargeable battery (2), LCD display (11) is connected with AVR single-chip microcomputer (1) by IO mouth.
2. the intelligent charger based on AVR single-chip microcomputer according to claim 1, is characterized in that: described shunt resistance (4) adopts high-precision current sampling resistor.
3. the intelligent charger based on AVR single-chip microcomputer according to claim 1, it is characterized in that: describedly upwards select button (6), all adopt common touch-switch to select button (7), ACK button (8), be of a size of 6*6*5mm, upwards select button (6), be connected with INT1 mouth, ICP mouth, the OC2 mouth of AVR single-chip microcomputer (1) respectively to select button (7), ACK button (8).
4. the intelligent charger based on AVR single-chip microcomputer according to claim 1, it is characterized in that: described discharge indicating lamp (9) adopts common redness two utmost point luminous tubes, one termination power of discharge indicating lamp (9), the other end is connected with the RXD mouth of AVR single-chip microcomputer (1) by resistance (R5), charging indicator light (10) adopts common green two utmost point luminous tubes, one termination power of charging indicator light (10), the other end is connected with the TXD mouth of AVR single-chip microcomputer (1) by resistance (R4).
5. the intelligent charger based on AVR single-chip microcomputer according to claim 1, is characterized in that: described LCD display (11) is selected 12864 LCDs with Chinese word library.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767222.7U CN203690960U (en) | 2013-11-29 | 2013-11-29 | Intelligent charger based on AVR single-chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767222.7U CN203690960U (en) | 2013-11-29 | 2013-11-29 | Intelligent charger based on AVR single-chip microcomputer |
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| Publication Number | Publication Date |
|---|---|
| CN203690960U true CN203690960U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320767222.7U Expired - Fee Related CN203690960U (en) | 2013-11-29 | 2013-11-29 | Intelligent charger based on AVR single-chip microcomputer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953688A (en) * | 2015-07-09 | 2015-09-30 | 天津市天楚科技有限公司 | Intelligent charger with configurable charging parameters |
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2013
- 2013-11-29 CN CN201320767222.7U patent/CN203690960U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953688A (en) * | 2015-07-09 | 2015-09-30 | 天津市天楚科技有限公司 | Intelligent charger with configurable charging parameters |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141129 |
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| EXPY | Termination of patent right or utility model |