CN204794182U - Balanced control circuit of cell -phone lithium batteries - Google Patents
Balanced control circuit of cell -phone lithium batteries Download PDFInfo
- Publication number
- CN204794182U CN204794182U CN201520431661.XU CN201520431661U CN204794182U CN 204794182 U CN204794182 U CN 204794182U CN 201520431661 U CN201520431661 U CN 201520431661U CN 204794182 U CN204794182 U CN 204794182U
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- resistance
- connects
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a balanced control circuit of cell -phone lithium batteries, include: switching power supply, boost circuit, charging circuit, equalizer circuit, voltage supervisory circuits and microcontroller, boost circuit is connected to switching power supply's output, boost circuit with charging circuit connects, charging circuit passes through voltage supervisory circuits and is connected with microcontroller, boost circuit and equalizer circuit are connected to microcontroller's output. The utility model discloses an adopting the polylith lithium cell to make up into the large capacity lithium cell and using the battery as the cell -phone, through carry out equalizing charge control to rechargeable battery, the charging voltage of every battery piece of messenger is the same, prevents that filling from appearing in the battery piece, prolongs the life of battery piece, prolongs the live time of cell -phone.
Description
Technical field
The utility model relates to electronics field, is specifically related to a kind of cellular li-ion battery charge balancing control circuit.
Background technology
Current mobile phone adopts lithium battery to power, existing cellular li-ion battery generally adopts one piece of battery to charge to mobile phone, but due to the capacity limit of lithium battery, the cell phone standby time is shorter, especially for the mobile phone of existing large scale display, electric quantity consumption is fast, discharge and recharge is frequent, use very inconvenient, and high-capacity lithium battery is generally be in series by multiple lithium battery, in charging process, often cause lithium cell charging unbalanced, some lithium batteries may overcharge, and the life-span of the overcharge of lithium battery meeting serious curtailment lithium battery.
Utility model content
The utility model, for above-mentioned prior art Problems existing, proposes a kind of cellular li-ion battery charge balancing control circuit.
The technical scheme that the utility model provides is: a kind of cellular li-ion battery charge balancing control circuit, it is characterized in that, comprise: Switching Power Supply, booster circuit, charging circuit, equalizing circuit, voltage monitoring circuit and microcontroller, the output of described Switching Power Supply connects booster circuit, described booster circuit is connected with described charging circuit, described charging circuit is connected with microcontroller by voltage monitoring circuit, and the output of described microcontroller connects booster circuit and equalizing circuit.
Further; described booster circuit comprises switching circuit, power source reverse connection protection circuit and boosting regulating circuit; described switching circuit is triode Q5; described power protecting circuit is made up of resistance R1, resistance R2, triode Q1; wherein resistance R1 and resistance R2 is attempted by the output of Switching Power Supply after connecting, and the base stage of described triode Q1 is connected with resistance R2 junction with resistance R1.
Further, described boosting regulating circuit comprises field effect drive circuit, voltage sampling circuit and BOOST circuit, the output of described field effect drive circuit connects BOOST circuit, the output of described booster circuit connects voltage collection circuit, and the output of described voltage collection circuit connects microprocessor.
Further, described equalizing circuit is the shunting circuit of resistance R13, resistance R14, resistance R15, resistance R16, triode Q6 and triode Q7 composition.
Further, described voltage monitoring circuit comprises optocoupler output circuit, opto-coupled feedback circuit and amplifying circuit, described amplifying circuit comprises preamplifier U2 and output amplifier U5, the output of described preamplifier U5 connects optocoupler output circuit U3, the output of described optocoupler output circuit U3 connects output amplifier U5, the output of described optocoupler output circuit U3 is connected with the input of opto-coupled feedback circuit U 4, and the output of described opto-coupled feedback circuit U 4 connects the input of preamplifier U2.
The beneficial effects of the utility model are: the utility model uses battery by adopting polylith lithium battery to be combined into high-capacity lithium battery as mobile phone, by carrying out equalizing charge control to rechargeable battery, the charging voltage of each battery block made is identical, prevent battery block from occurring overcharging, extend the useful life of battery block, the service time of extending cell phone.
Accompanying drawing explanation
Fig. 1 is a kind of cellular li-ion battery charge balancing control circuit structured flowchart that the utility model proposes;
Fig. 2 is a kind of cellular li-ion battery charge balancing control circuit figure that the utility model proposes.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
See Fig. 1 and Fig. 2, wherein Fig. 1 is a kind of cellular li-ion battery charge balancing control circuit structured flowchart that the utility model proposes, and Fig. 2 is a kind of cellular li-ion battery charge balancing control circuit figure that the utility model proposes.
As depicted in figs. 1 and 2, a kind of cellular li-ion battery charge balancing control circuit, comprise: Switching Power Supply, booster circuit, charging circuit, equalizing circuit, voltage monitoring circuit and microcontroller, the output of described Switching Power Supply connects booster circuit, described booster circuit is connected with described charging circuit, described charging circuit is connected with microcontroller by voltage monitoring circuit, and the output of described microcontroller connects booster circuit and equalizing circuit.
Further; described booster circuit comprises switching circuit, power source reverse connection protection circuit and boosting regulating circuit; described switching circuit is triode Q5; described power protecting circuit is made up of resistance R1, resistance R2, triode Q1; wherein resistance R1 and resistance R2 is attempted by the output of Switching Power Supply after connecting, and the base stage of described triode Q1 is connected with resistance R2 junction with resistance R1.
Further, described boosting regulating circuit comprises field effect drive circuit, voltage sampling circuit and BOOST circuit, the output of described field effect drive circuit connects BOOST circuit, the output of described booster circuit connects voltage collection circuit, and the output of described voltage collection circuit connects microprocessor.
Further, described field effect drive circuit comprises triode Q2, triode Q4, amplifier U1, and the base stage of triode Q2 is connected with the cathode output end of power source reverse connection protection circuit by pull-up resistor R7.
In the utility model embodiment, described BOOST boosting regulating circuit comprises field effect transistor Q3, inductance L 1, diode D1, electric capacity C4 and electric capacity C5, the emitter of described triode Q2 is connected with the grid of field effect transistor Q3 by resistance R8, the source electrode of described field effect transistor Q3 is connected by the collector electrode of inductance L 1 triode Q2, the source electrode of described field effect transistor Q3 is connected with the positive pole of diode D1, the negative pole of described diode D1 connects electric capacity C4, the positive pole of electric capacity C5, the minus earth of described electric capacity C4 and electric capacity C5, the described collector electrode of triode Q2 is connected with the cathode output end of Switching Power Supply, the emitter of described triode is connected with the collector electrode of triode Q4, the electrode input end of described amplifier U1 is connected with the output of PWM device by resistance R4, the negative input of described amplifier U1 is connected with reference voltage with resistance R5 by resistance R4, the base stage of the output connecting triode Q4 of described amplifier U1.Described voltage sampling circuit is after resistance R10 and electric capacity C6 parallel connection and resistance R10 connects.
In the utility model embodiment, when cellular li-ion battery charging normally works, the both positive and negative polarity of Switching Power Supply exports receives DC+ respectively, DC-, switching tube Q5 turn off, the PWM duty ratio that the potentiometer that microprocessor feeds back according to battery monitoring circuit calculates, export corresponding modulation signal, PWM modulation signal amplifies adjustment through driving stage, controls triode Q3 on off state, to produce required output voltage.
Described equalizing circuit is the shunting circuit of resistance R13, resistance R14, resistance R15, resistance R16, triode Q6 and triode Q7 composition, the output of described microprocessor is connected with the base stage of triode Q6 by resistance R13, the collector electrode of described triode Q6 is connected with the base stage of triode Q7 by resistance R2, the collector electrode of described triode Q7 is connected with the base stage of triode Q7 by resistance R15 on the one hand, be connected with the emitter of triode Q7 with resistance R16 by lithium battery on the other hand, the grounded emitter of described triode Q6.
In the utility model embodiment, in charging process, when a certain monomer voltage apparently higher than group in other batteries time, control port is drawn high by microprocessor, triode Q6 conducting, triode Q7 base potential is dragged down, triode Q7 conducting, part electric energy is shunted from bypass resistance R16, reduces this battery charging rate, thus it is synchronous to realize each cell charge rate of battery pack, reaches the object of equalizing charge.
Further, described voltage monitoring circuit comprises optocoupler output circuit, opto-coupled feedback circuit and amplifying circuit, described amplifying circuit comprises preamplifier U2 and output amplifier U5, the output of described preamplifier U5 connects optocoupler output circuit U3, the output of described optocoupler output circuit U3 connects output amplifier U5, the output of described optocoupler output circuit U3 is connected with the input of opto-coupled feedback circuit U 4, and the output of described opto-coupled feedback circuit U 4 connects the input of preamplifier U2.
In the utility model embodiment, by voltage monitoring circuit, each cell voltage of lithium battery is monitored, be on same benchmark by the photovoltaic conversion of each battery, level translation can be realized by adopting the method for light-coupled isolation sampling, in the utility model embodiment, by connecting the collection and the implementing monitoring that realize voltage to optocoupler linearisation.
The utility model uses battery by adopting polylith lithium battery to be combined into high-capacity lithium battery as mobile phone, by carrying out equalizing charge control to rechargeable battery, the charging voltage of each battery block made is identical, prevent battery block from occurring overcharging, extend the useful life of battery block, the service time of extending cell phone.
Above the utility model is described in detail, but the utility model is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from the utility model aim.Do not depart from design of the present utility model and scope can make many other and change and remodeling.Should be appreciated that the utility model is not limited to specific execution mode, scope of the present utility model is defined by the following claims.
Claims (5)
1. a cellular li-ion battery charge balancing control circuit, it is characterized in that, comprise: Switching Power Supply, booster circuit, charging circuit, equalizing circuit, voltage monitoring circuit and microcontroller, the output of described Switching Power Supply connects booster circuit, described booster circuit is connected with described charging circuit, described charging circuit is connected with microcontroller by voltage monitoring circuit, and the output of described microcontroller connects booster circuit and equalizing circuit.
2. a kind of cellular li-ion battery charge balancing control circuit according to claim 1; it is characterized in that: described booster circuit comprises switching circuit, power source reverse connection protection circuit and boosting regulating circuit; described switching circuit is triode Q5; described power protecting circuit is made up of resistance R1, resistance R2, triode Q1; wherein resistance R1 and resistance R2 is attempted by the output of Switching Power Supply after connecting, and the base stage of described triode Q1 is connected with resistance R2 junction with resistance R1.
3. a kind of cellular li-ion battery charge balancing control circuit according to claim 2, it is characterized in that: described boosting regulating circuit comprises field effect drive circuit, voltage sampling circuit and BOOST circuit, the output of described field effect drive circuit connects BOOST circuit, the output of described booster circuit connects voltage collection circuit, and the output of described voltage collection circuit connects microprocessor.
4. a kind of cellular li-ion battery charge balancing control circuit according to claim 1, is characterized in that: described equalizing circuit is the shunting circuit of resistance R13, resistance R14, resistance R15, resistance R16, triode Q6 and triode Q7 composition.
5. a kind of cellular li-ion battery charge balancing control circuit according to claim 1, it is characterized in that: described voltage monitoring circuit comprises optocoupler output circuit, opto-coupled feedback circuit and amplifying circuit, described amplifying circuit comprises preamplifier U2 and output amplifier U5, the output of described preamplifier U5 connects optocoupler output circuit U3, the output of described optocoupler output circuit U3 connects output amplifier U5, the output of described optocoupler output circuit U3 is connected with the input of opto-coupled feedback circuit U 4, the output of described opto-coupled feedback circuit U 4 connects the input of preamplifier U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431661.XU CN204794182U (en) | 2015-06-19 | 2015-06-19 | Balanced control circuit of cell -phone lithium batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431661.XU CN204794182U (en) | 2015-06-19 | 2015-06-19 | Balanced control circuit of cell -phone lithium batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794182U true CN204794182U (en) | 2015-11-18 |
Family
ID=54534165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520431661.XU Expired - Fee Related CN204794182U (en) | 2015-06-19 | 2015-06-19 | Balanced control circuit of cell -phone lithium batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115085314A (en) * | 2022-06-24 | 2022-09-20 | 上海南麟电子股份有限公司 | Asynchronous boosting and charging control circuit, chip, system and method for battery |
-
2015
- 2015-06-19 CN CN201520431661.XU patent/CN204794182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115085314A (en) * | 2022-06-24 | 2022-09-20 | 上海南麟电子股份有限公司 | Asynchronous boosting and charging control circuit, chip, system and method for battery |
| CN115085314B (en) * | 2022-06-24 | 2023-07-18 | 上海南麟电子股份有限公司 | Asynchronous boost charging control circuit, chip, system and method for battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102035238A (en) | Solar charging control circuit | |
| CN204835631U (en) | Digifax hybrid control storage battery charging circuit | |
| CN101807805B (en) | Charging management circuit and power supply adapting device | |
| CN204465038U (en) | A kind of series battery discharging equalizing circuit | |
| CN204030681U (en) | Lithium ion cell charging current foldback circuit | |
| CN104682459A (en) | Charging circuit based on constant current-constant voltage-floating charging method of lead acid storage battery | |
| CN104065141A (en) | Large-scale battery management system | |
| CN104779665A (en) | Mobile power supply capable of equalizing charge | |
| CN205051931U (en) | LED's drive power supply | |
| CN201904637U (en) | Solar charging control circuit | |
| CN205092599U (en) | Equalizing charge device of multisection battery | |
| CN204068378U (en) | The dynamic big current balancing control circuit of multi-series lithium battery group | |
| CN106208315B (en) | The efficiency-timed power supply system of charge and discharge | |
| CN204794182U (en) | Balanced control circuit of cell -phone lithium batteries | |
| CN202798079U (en) | Charging/discharging protection circuit of lithium battery | |
| CN203398833U (en) | Battery charging/discharging circuit of uninterruptible power supply | |
| CN101764271B (en) | Intelligent charging/discharging method and device of intelligent battery pack | |
| CN204190420U (en) | A kind of Novel photovoltaic battery charging circuit | |
| CN204349510U (en) | There is the quick charger of temperature control loops | |
| CN203722214U (en) | Self-switching-off starting circuit powered by rechargeable battery | |
| CN204068316U (en) | Extensive battery management system | |
| CN104362702A (en) | Power supply system of transformer substation | |
| CN103779839A (en) | Automatic opening type starting circuit powered up by rechargeable battery | |
| CN204652220U (en) | A kind of novel B UCK translation circuit | |
| CN204597570U (en) | A kind of lithium battery charger circuit structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20151118 Termination date: 20160619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |