CN2369396Y - Mobile telephone battery charger - Google Patents
Mobile telephone battery charger Download PDFInfo
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- CN2369396Y CN2369396Y CN98240125U CN98240125U CN2369396Y CN 2369396 Y CN2369396 Y CN 2369396Y CN 98240125 U CN98240125 U CN 98240125U CN 98240125 U CN98240125 U CN 98240125U CN 2369396 Y CN2369396 Y CN 2369396Y
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Abstract
The utility model relates to a charger for a mobile telephone battery, particularly the charger which can automatically identify various charge batteries and adjust and control corresponding charge processes. Aiming at the condition that a mobile telephone lithium battery is mixed with a nickel-hydrogen battery or a nickel-cadmium battery and by means of different charge voltage curves of two kinds of batteries, an intelligent chip judges that the charge battery is the lithium battery when charge voltage achieves the charge voltage range of the lithium battery and the charge battery is the nickel-hydrogen battery or the nickel-cadmium battery when the charge voltage presents a negative delta V phenomenon; a battery kind determining circuit is omitted, and a purpose of intelligently identifying battery kinds is achieved. In this way, the utility model with a simple circuit does not use a battery kind transfer switch and operation is convenient. The charger is controlled by the intelligent chip, therefore, the utility model also realizes various intelligent functions, such as negative pulse charge, the combination of deep charge and discharge for eliminating polarization, charge for mobile telephone batteries with different rated voltage, etc.
Description
The utility model relates to a kind of battery charger for mobile phone, and particularly a kind of can be the intelligent charger that multiple battery of mobile phone such as lithium ion battery, Ni-MH battery and Ni-Cr battery charge.
Mobile phone the earliest all is a nickel-cadmium cell with battery, and corresponding charger also all is that nickel-cadmium cell is charged.Along with the continuous development of electrochemical techniques, various novel mobile telephones are come out one after another with battery, progressively come into the market as advantages such as Ni-MH battery, lithium battery etc., particularly lithium battery are big with its capacity, volume is little, in light weight, life-span is long.In order to adapt to the development of mobile phone, on the basis of original 7.2V lithium battery, 6V nickel-based battery, having occurred rated voltage again is lithium battery, Ni-MH battery and the Ni-Cr battery of 3.6V.Special charger to lithium battery and Ni-MH battery charging has then just appearred.At present, the battery charger for mobile phone of being sold mostly is respectively at a kind of design in lithium ion battery, Ni-MH battery, the Ni-Cr battery on the market, and same mobile phone often is furnished with different types of battery of mobile phone, if cell types changes to some extent, charger also will change thereupon, uses a plurality of battery chargers to bring inconvenience to the cellie.Though existing multifunctional charger can be to different types of charging mobile phone battery, but implementation method utilizes switch to select different charge modes to fill different types of battery mostly, if selected switch wrong, just may make battery overcharge, overheated or undercharge, even the permanent damage battery.
The purpose of this utility model provides that a kind of various battery of mobile phone all is suitable for, the simple intelligent charger of circuit structure.
This charger is achieved in that and comprises outside casing, power circuit and the charge-discharge circuit that is provided with charging end (1) to the each several part power supply, be characterised in that and also comprise a charging and discharging state observation circuit and a CPU, the charging and discharging state observation circuit comprises an operational amplifier integrating circuit and two comparison circuits, the pulse output end of CPU is connected to the input of operational amplifier integrating circuit, the output of operational amplifier integrating circuit is connected to two inputs of two comparison circuits, the other end of two comparison circuits is connected with the battery voltage measurement point of reference voltage or charging circuit respectively, and the output of two comparison circuits is connected respectively to two interrupting input ends of CPU.
This charger is CPU different according to lithium battery and Ni-MH battery, Ni-Cr battery charging curve end in charging process, and battery variety is judged and adjusted charging process accordingly.Lithium battery is different with the charge characteristic of Ni-MH battery, Ni-Cr battery, lithium battery the charging later stage charging voltage than ni-mh, Ni-Cr battery height, charging voltage can reach the charge voltage range of lithium battery, can judge that this battery is a lithium battery; Ni-mh, Ni-Cr battery will be when will being full of, and charging voltage descends to some extent, be called-Δ V phenomenon, change by the detection of dynamic charging voltage, and during discovery-Δ V phenomenon, can judge is that this battery is Ni-MH battery or Ni-Cr battery.For lithium battery, when charging voltage reaches capacity, stop charging immediately, enter trickle charge; For ni-mh, Ni-Cr battery, if satisfy-Δ V condition, quick charge stops, and enters trickle charge.
This charger is continuous detection reference voltage (generally being preset as the rated voltage of lithium battery) and charging end charging voltage in charging process.By CPU output positive pulse, deliver to the charged state observation circuit, CPU is to the number count of output pulse simultaneously.The quantity integration of the integrating circuit paired pulses in the observation circuit, the quantity of integral voltage and pulse has definite corresponding relation.Integral voltage is delivered to two comparison circuits, compares with reference voltage or charging end voltage respectively, and the output result of comparison circuit sends into CPU.When the output result who detects corresponding comparison circuit as CPU changed, the count value of pulse had promptly reflected corresponding reference voltage or charging end charging voltage value.
The utility model has following beneficial effect: discerns lithium ion battery and ni-mh, Ni-Cr battery automatically, do not need charge mode with the switch transition battery, and easy to operate; Adopt the charge and discharge process of CPU control battery, according to limit value or-Δ V phenomenon is full of judgement, charging effect is good; Circuit is simple and reliable, and volume is little, and is in light weight, easy to carry, is particularly suited for travelling.
Fig. 1 is the charger block diagram;
Fig. 2 is the charged state monitoring circuit;
Fig. 3 is a charging and discharging circuit.
Below in conjunction with accompanying drawing embodiment is described in detail.
Fig. 1 has reflected the operation principle of this charger, power circuit is powered to each several part, concrete control circuit and charging end are arranged on the charge-discharge circuit, and the charging and discharging state monitoring circuit informs CPU (monolithic microcomputer kernel) with the voltage of charging end, and CPU controls charge-discharge circuit.
The specific embodiments that forms in conjunction with Fig. 2, Fig. 3 is as follows.
1, power circuit converts the alternating current of 220V to Vcharge and is sent to charging and discharging circuit, and CPU and charged state monitoring circuit are sent to through the more stable voltage of three-terminal voltage-stabilizing pipe output in another road.
2, the power supply of charging and discharging circuit is Vcharge, charging end 1 is the positive pole of common rechargeable battery, P2, P3 are the control signal from CPU, the operating state of charging and discharging circuit by P2, P3 control is as follows: (1) P3 electronegative potential is by triode Q1, open triode Q2 of P2 high potential and Q3, electric current from Vcharge cross triode Q3, diode D10 arrives charging end 1 smoothly, is quick-charge state; (2) the P3 electronegative potential is by triode Q1, and the P2 electronegative potential is by triode Q2 and Q3, electric current from Vcharge cross resistance R 5, diode D10 arrives charging end 1, because resistance R 5 resistances are bigger, so charging current is very little, is the trickle charge state; (3) the open triode Q1 of P3 high potential, the P2 electronegative potential is by triode Q2 and Q3, and the charging negative pole is got back to through resistance R 9, triode Q1 in charging end 1, is the battery of mobile phone discharge condition.
3, the charging monitoring circuit is by integrating circuit Y1, and comparison circuit Y2 and Y3 constitute.Integrating circuit Y1 is the common circuit of finishing the input end signal integrating function, when input P7 has pulse signal, the quantity of pulse signal can accumulate on the voltage that is reflected in output integral voltage P10, under perfect condition, the voltage of integral voltage P10 is directly proportional with the quantity of the pulse that P7 is sent, and definite corresponding relation is arranged between the two.
P9 is preset as the rated voltage of lithium battery by its resistance that connects up and down, i.e. reference voltage, and 1 is the charging voltage from the charging end.Y2 and Y3 are common comparison circuits.
The rated voltage P9 of lithium battery and integral voltage P10 compare at comparison circuit Y2, the CPU of P8 input as a result; The charging voltage of charging end 1 and integral voltage P10 compare at comparison circuit Y3, the CPU of P4 input as a result.
The following method that adopts CPU reflects the rated voltage P9 of lithium battery and the charging voltage of charging end 1.Under initial condition, integral voltage P10 is lower, and the voltage of the rated voltage P9 of lithium battery and integral voltage P10, charging end 1 and the comparative result of integration P10 all are-1 current potential; CPU sends positive pulse and notes down the quantity of pulse to P7, and the increase of P7 pulse is reflected on the increasing of integral voltage P10, and the umber of pulse of integral voltage P10 and P7 has definite corresponding relation; When integral voltage P10 was increased to voltage greater than charging end 1, both comparative result P4 became+1 signal accepted by CPU, this moment the CPU record the charging voltage of quantity reflection charging end 1 of its positive pulse of sending; Integral voltage P10 continues to increase, and when integral voltage P10 was increased to rated voltage greater than lithium battery, both comparative result P8 became+1 signal accepted by CPU, this moment the CPU record the rated voltage of quantity reflection lithium battery of its positive pulse of sending; CPU sends negative pulse or control integrating circuit Y1 discharge to P7, makes the charging monitoring circuit return initial condition; Continue measurement next time.Under this metering system, the charging voltage of the rated voltage P9 of lithium battery and charging end 1 with the reflection of the quantity of arteries and veins portion, is not to represent only have the comparative sense of magnitude of voltage with volt accurately in CPU inside.
4, the function of discharge button K1, LED 1, LED2 and charging end 2 is as follows.When pressing discharge button K1, the input P5 of CPU receives the arrival of positive pulse, then to P2 output electronegative potential, to P3 output high potential, control charging and discharging circuit discharge certain hour.When charger was in discharge condition, because the P3 high potential is opened triode Q1, LED 2 was shinny, and other times do not work.When charger was in quick-charge state, because the P2 high potential, LED 1 was shinny, and other times do not work.Utilize the charging end 2 can the less charging mobile phone battery of less to rated voltage, required charging current.
5, because CPU can reflect the charging voltage of charging end 1, the control charge-discharge circuit is in quick charge, trickle charge or discharge condition, makes this charger that special performances arranged.A, in charging process battery of mobile phone is regularly carried out of short duration discharge, i.e. the polarization phenomena of battery are eliminated in negative pulse discharge; B, discern lithium battery and ni-mh automatically, Ni-Cr battery charges, and need not to be provided with diverter switch.P9 is set to the rated voltage of lithium battery, in the quick charge process, the voltage status of CPU monitoring charging end 1, when the charging voltage of charging end 1 reaches the voltage of P9 setting, can judge rechargeable battery is lithium battery, changes trickle charge over to, does not occur-Δ V (charging voltage decline) phenomenon when the voltage of charging end 1 reaches the voltage that P9 is provided with, can judge is ni-mh, Ni-Cr battery, changes trickle charge over to; C, magnitude of voltage that utilize to set are full of judgement with-Δ V phenomenon, and charging effect is good.The charging voltage that conventional charger provided is constant, if charging voltage and battery rated voltage are approaching, situation about being full of can take place to be difficult to for a long time, if charging voltage, is easy to the situation of overcharging the infringement battery than battery rated voltage height.This charger quickly-chargeable changes trickle over to after rated voltage, the electric current of trickle is very little, can not cause and overcharge, and charging rate is safety again soon.
What be worth emphasizing is because of this charger cpu function is simpler, therefore can makes up replaced C PU to realize with transmitting-receiving pulse, counting, comparison, calendar scheduling Digital Logical Circuits fully, but realize easier with CPU control.
Claims (6)
1. battery charger for mobile phone, comprise outside casing, power circuit and the charge-discharge circuit that is provided with charging end (1) to the each several part power supply, it is characterized in that also comprising a charging and discharging state observation circuit and a CPU, the charging and discharging state observation circuit comprises an operational amplifier integrating circuit and two comparison circuits, the pulse output end of CPU is connected to the input of operational amplifier integrating circuit, the output of operational amplifier integrating circuit is connected to two inputs of two comparison circuits, the other end of two comparison circuits is connected with the battery voltage measurement point of reference voltage or charging circuit respectively, and the output of two comparison circuits is connected respectively to two interrupting input ends of CPU.
2. charger as claimed in claim 1, it is characterized in that the magnitude of voltage of charging and discharging state observation circuit to CPU reflection rechargeable battery measurement point, the charge voltage range that CPU judges as the magnitude of voltage of charging voltage measurement point reaches lithium battery then is a lithium battery, if charging voltage appearance-Δ V phenomenon then is Ni-Cr battery, Ni-MH battery; Count when CPU exports high digit pulse, the reflection of pulse counter value is the battery voltage measurement point voltage value of reference voltage or charging circuit when the output of comparison circuit reverses.
3. charger as claimed in claim 2 is characterized in that the charging end (1) of charge-discharge circuit increases a resistance (R3), and draws a charging end (2), charging mobile phone battery that can be different to rated voltage.
4. charger as claimed in claim 3, it is characterized in that having on the casing a plurality of adaptation difformity batteries the charging storehouse.
5. as claim 2 or 4 described chargers, it is characterized in that having in the charging circuit switch that is used to switch charged state and discharge condition, can carry out repeatedly the degree of depth to battery and discharge and recharge, to eliminate the memory effect of battery.
6. charger as claimed in claim 5 is characterized in that being controlled at by CPU and regularly carries out negative pulse discharge in the charging process, is used for eliminating the polarity effect in the battery charging process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98240125U CN2369396Y (en) | 1998-09-10 | 1998-09-10 | Mobile telephone battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98240125U CN2369396Y (en) | 1998-09-10 | 1998-09-10 | Mobile telephone battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2369396Y true CN2369396Y (en) | 2000-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98240125U Expired - Fee Related CN2369396Y (en) | 1998-09-10 | 1998-09-10 | Mobile telephone battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2369396Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392942C (en) * | 2005-10-31 | 2008-06-04 | 中兴通讯股份有限公司 | Device and method for controlling procedure of charging batteries |
| CN103441544A (en) * | 2013-08-16 | 2013-12-11 | 崧顺电子（深圳）有限公司 | Multivoltage output control circuit for intelligent charger |
| CN109212423A (en) * | 2018-11-13 | 2019-01-15 | 上海艾为电子技术股份有限公司 | Battery full charge testing circuit and its detection battery be full of method, electronic device |
| CN109856546A (en) * | 2019-01-07 | 2019-06-07 | 银隆新能源股份有限公司 | Secondary battery material system detection method |
-
1998
- 1998-09-10 CN CN98240125U patent/CN2369396Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392942C (en) * | 2005-10-31 | 2008-06-04 | 中兴通讯股份有限公司 | Device and method for controlling procedure of charging batteries |
| CN103441544A (en) * | 2013-08-16 | 2013-12-11 | 崧顺电子（深圳）有限公司 | Multivoltage output control circuit for intelligent charger |
| CN103441544B (en) * | 2013-08-16 | 2015-09-09 | 崧顺电子（深圳）有限公司 | The multivoltage output control circuit of intelligent charger |
| CN109212423A (en) * | 2018-11-13 | 2019-01-15 | 上海艾为电子技术股份有限公司 | Battery full charge testing circuit and its detection battery be full of method, electronic device |
| CN109212423B (en) * | 2018-11-13 | 2024-03-01 | 上海艾为电子技术股份有限公司 | Battery full detection circuit, method for detecting battery full and electronic device |
| CN109856546A (en) * | 2019-01-07 | 2019-06-07 | 银隆新能源股份有限公司 | Secondary battery material system detection method |
| CN109856546B (en) * | 2019-01-07 | 2024-01-19 | 银隆新能源股份有限公司 | Secondary battery material system detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |