CN102916461A - Intelligent charge-discharge control circuit of battery - Google Patents
Intelligent charge-discharge control circuit of battery Download PDFInfo
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- CN102916461A CN102916461A CN2012103273105A CN201210327310A CN102916461A CN 102916461 A CN102916461 A CN 102916461A CN 2012103273105 A CN2012103273105 A CN 2012103273105A CN 201210327310 A CN201210327310 A CN 201210327310A CN 102916461 A CN102916461 A CN 102916461A
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Abstract
The invention relates to a control circuit, and discloses an intelligent charge-discharge control circuit of a battery. The intelligent charge-discharge control circuit comprises a charge input voltage detection circuit, a charge current control circuit, a battery voltage detection circuit and a large-current discharge control circuit, wherein the charge input voltage detection circuit is used for detecting an input charge voltage when the battery is charged; the charge current control circuit is used for controlling a current for charging the battery according to the previously detected charge voltage; the battery voltage detection circuit is used for monitoring voltages at two ends of the battery in a charging state; and the large-current discharge control circuit is used for discharging in battery operation. The intelligent charge-discharge control circuit has the benefits that an overcharge problem caused when a user charges a battery device by using the unmatched voltage is effectively avoided, so that the circuit is safe and reliable, and an explosion hidden danger of the battery in a charging state is completely eradicated; and the user does not need to distinguish the voltages of charging equipment when the battery is charged, so that the use is more convenient. For the electronic cigarette industry, a consideration for types of adapters is no required, and any adapter can be used for charging electronic cigarettes with the intelligent charge-discharge control circuit.
Description
Technical field
The present invention relates to a kind of control circuit, relate in particular to a kind of battery intelligent charge-discharge control circuit.
Background technology
In the prior art, when rechargeable battery is charged, must use the charger (claiming again " adapter ") of coupling that battery is charged.For example: in the electronic cigarette industry, the mechanical electronic cigarette adapter charger of output 4.2V, the integrated type electrical cigarette adapter charger that is output as 5.0V.If mechanical electronic cigarette mistake uses the charger (adapter) of 5.0V to its charging, light then destroy the internal structure of battery, reduce the useful life of battery, seriously then cause battery leakage, smolder, on fire even blast, when causing consumer's property loss, bring the hidden danger of personal safety.And in the reality because the compatibility of the screw thread of electronic cigarette connecting charger, in actual applications, this mistake often happens occasionally.In like manner, in the mobile devices such as mobile phone, MP3, because the compatibility of charging inlet, also there is above-mentioned security hidden trouble in rechargeable battery when charging.
Summary of the invention
The objective of the invention is to provide a kind of internal voltage output of regulating, the battery intelligent charge-discharge control circuit that rechargeable battery is charged normal.
According to an aspect of the present invention, the battery intelligent charge-discharge control circuit that provides comprises: charging input voltage detection circuit, the charging voltage of inputting when battery is charged;
Charging current control circuit, according to the charging voltage that previous step detects, control is to the electric current of battery charging;
Battery voltage detection circuit is used under the monitoring charged state voltage at battery two ends;
The heavy-current discharge control circuit is used for battery operated discharge;
The charging input voltage detection circuit is connected with charging current control circuit, and battery voltage detection circuit is connected with charging current control circuit, and charging input voltage detection circuit and heavy-current discharge control circuit use the same path.
In some embodiments, the charging input voltage detection circuit comprises inductance and metal-oxide-semiconductor, and inductance is connected with metal-oxide-semiconductor.
In some embodiments, charging current control circuit comprises inductance and transistor, and inductance is connected with transistor.
In some embodiments, battery voltage detection circuit comprises resistance and integrated circuit, and resistance is connected with integrated circuit.
In some embodiments, the heavy-current discharge control circuit comprises electric capacity, resistance, transistor, inductance, battery and single-chip microcomputer, and electric capacity, resistance, transistor, inductance and battery are connected with single-chip microcomputer and are connected.
In some embodiments, the charging input voltage detection circuit also comprises electric capacity, resistance, battery, single-chip microcomputer and integrated circuit, and electric capacity, resistance and battery are connected with single-chip microcomputer and are connected, and single-chip microcomputer is connected with integrated circuit.
In some embodiments, charging current control circuit also comprises resistance, electric capacity, battery and single-chip microcomputer, and resistance, electric capacity and battery are connected with single-chip microcomputer and are connected.
In some embodiments, battery voltage detection circuit also comprises single-chip microcomputer, and single-chip microcomputer is connected with integrated circuit.
The invention has the beneficial effects as follows, can effectively avoid the user to be higher than the problem that overcharges that the adapter (charger) of safe charging voltage produces when charging rechargeable battery (as: the mechanical electronic cigarette of mentioning in the background technology) with output, safe and reliable, stopped the potential safety hazard of battery when charging.The consumer does not need to distinguish the type of adapter when battery is charged, just can directly bring use (as: the adapter charger of the 5.0V that mentions in the background technology), uses more convenient.In addition, the present invention also has simple and reliable, the advantage that cost is low.
Description of drawings
Fig. 1 is the structural representation of the battery intelligent charge-discharge control circuit of an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing some embodiments of the present invention are described in further detail.
The demonstration of Fig. 1 signal the battery intelligent charge-discharge control circuit of an embodiment of the present invention, comprising:
The charging input voltage detection circuit comprises capacitor C 1, resistance R 2, resistance R 3, resistance R 6, inductance L 1, metal-oxide-semiconductor Q3, battery BAT, single-chip microcomputer U1 and integrated circuit U2.Resistance R 2, inductance L 1, battery BAT and metal-oxide-semiconductor Q3 connect successively, and resistance R 3 is connected with resistance R 6, and above two series circuits carry out after the parallel connection in parallel with capacitor C 1 again, and the two ends of metal-oxide-semiconductor Q3 are parallel with single-chip microcomputer U1.Single-chip microcomputer U1 is in parallel with integrated circuit U2.The charging voltage that this circuit is inputted when battery is charged.
Charging current control circuit comprises resistance R 1, PMOS pipe Q1, metal-oxide-semiconductor Q2, inductance L 1, capacitor C 3, battery BAT, metal-oxide-semiconductor Q3 and single-chip microcomputer U1.Inductance L 1, battery BAT and metal-oxide-semiconductor Q3 connect successively.Capacitor C 3 is in parallel with battery BAT.PMOS pipe Q1 connects with Q2 after resistance R 1 and the PMOS pipe Q1 parallel connection.Metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, single-chip microcomputer U1 are in parallel respectively.The charging voltage that this circuit detects according to previous step, control is to the electric current of battery charging;
Battery voltage detection circuit, it comprises resistance R 8, integrated circuit U2, resistance R 4, resistance R 5 and single-chip microcomputer U1.Resistance R 4, resistance R 5, resistance R 8, integrated circuit U2 connect successively.The pin PIN10 of single-chip microcomputer U1 is connected in parallel between resistance R 4 and the resistance R 5, and pin PIN8 is connected in parallel between resistance R 5 and the resistance R 8, and pin PIN6 is connected in parallel between resistance R 8 and the integrated circuit U2.This circuit is used under the monitoring charged state, the voltage at battery two ends.
The heavy-current discharge control circuit comprises capacitor C 1, capacitor C 2, capacitor C 3, resistance R 1, resistance R 3, resistance R 6, PMOS pipe Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, inductance L 1, battery BAT and single-chip microcomputer U1.Inductance L 1, battery BAT, metal-oxide-semiconductor Q3 connect successively.Capacitor C 3 is in parallel with battery BAT.Resistance R 1 is connected with PMOS pipe Q1, metal-oxide-semiconductor Q2 with PMOS pipe Q1 parallel connection and resistance R 1.Metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 are in parallel with single-chip microcomputer U1.This circuit is used for battery operated discharge.
The charging input voltage detection circuit is connected with charging current control circuit, and battery voltage detection circuit is connected with charging current control circuit, and charging input voltage detection circuit and heavy-current discharge control circuit use the same path.
Behind the outside access of the electronic cigarette charger, single-chip microcomputer U1 control metal-oxide-semiconductor Q3 conducting, but not conducting of metal-oxide-semiconductor Q1.In the resistance R 2 access this moment charge circuits, the voltage at resistance R 3 and resistance R 6 two ends is the output voltage of charger, and can not follow the electronic cigarette cell voltage and change.Are connected the magnitude of voltage that connects with resistance R by detecting resistance R 3, can judge the type of charger.When the voltage at resistance R 3 and resistance R 6 two ends was 4.2V, charger was the mechanical charge device; When the voltage at resistance R 3 and resistance R 6 two ends was 5.0V, charger was integration charger.According to the type of charger, single-chip microcomputer U1 control electronic cigarette carries out the charging of different mode.If charger is the mechanical charge device, then single-chip microcomputer U1 controls the PWM ripple of its tripod and octal output low frequency rate big space rate, the break-make of control metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3.If charger is integration charger, then single-chip microcomputer U1 controls the PWM ripple of its tripod and the little duty ratio of octal output high-frequency, controls the break-make of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3, and passes through the energy storage effect of magnetic bead or inductance L 1, level and smooth, constant charge electric current.After the charging beginning, single-chip microcomputer U1 one is straight through the voltage between its tenth pin detection resistance R 4 and the resistance R 5, thus the cell voltage of monitoring electronic cigarette.When cell voltage is enough large, the shutoff of single-chip microcomputer U1 control metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3, complete charge.
Before charging did not begin, single-chip microcomputer U1 controls its pin PIN3 and pin PIN8 is low level, and pin PIN9 carries out drawing setting on the inside, and owing to drawing effect in resistance R 3 and resistance R 4 formation, the PIN9 that does input pin is high level; Above setting is turn-offed metal-oxide-semiconductor Q2, so the grid of PMOS pipe Q1 is high level because of pull-up resistor, PMOS pipe Q1 turn-offs and do not open, and metal-oxide-semiconductor Q3 turn-offs and do not open.The access charger, namely CH+ CH-end connecting charger output, the positive pole of charger output connects CH+, the negative pole of charger output connects CH-.After the charger access, resistance R 2, inductance L 1, battery BAT and electric capacity Q3 form a charging path, and this requires the resistance of resistance R 2 can not be too large.Because the generation of charging path, will make the input pin PIN9 of single-chip microcomputer U1 is low level by high level transition.After single-chip microcomputer U1 detects this variation, be judged as the charging beginning, putting output pin PIN8 is high level, and this moment, metal-oxide-semiconductor Q3 opened, and makes the type of the electronic cigarette charger that carries out thereafter judge more reliable accurate.After the metal-oxide-semiconductor Q3 conducting, single-chip microcomputer U1 just samples to the voltage between resistance R 3 and the resistance R 6, resistance R 3 and resistance R 6 can not be too little, otherwise will cause after the charger access through resistance R 3, that resistance R 6 forms loop currents is too large, and the resistance ratio of resistance R 3 and resistance R 6 is wanted appropriately to make things convenient for obtaining, calculating of sample voltage value.Because the electronic cigarette charger of access may have 5.0V, 4.2V output, therefore the voltage at resistance R 3 and resistance R 6 two ends also has two kinds of 5.0V, 4.2V.Single-chip microcomputer U1 is by to after sampled voltage carries out analytical calculation between resistance R 3 and the resistance R 6, according to the difference of sample voltage value, just can judge the electronic cigarette charger is to belong to mechanical type (4.2V Voltage-output) still to belong to integrated type (5.0V Voltage-output).When the electronic cigarette charger is the mechanical charge device, output pin PIN3, the PIN8 pwm pulse that the duty ratio of stable output is larger of control PMOS pipe Q1 and metal-oxide-semiconductor Q3 break-make, make the energising path receive the power output of charger fully, can in the low level shutoff pulse of short time, detect removing whether of charger again.When the electronic cigarette charger was integration charger, single-chip microcomputer U1 will control its output pin PIN3 according to different electronic cigarette cell voltages and reach trickle--the constant current-constant voltage charge pattern of simulating lithium battery with the different pwm pulse of PIN8 output.This moment, element L1 can be inductance or magnetic bead, and element L1 is inductance in the present embodiment.Inductance L 1 has appropriate storage-ability that releases energy, the function of finishing smooth charging current and don't affects the security ﹠ performance of circuit when output is used.The detection of electronic cigarette cell voltage necessarily requires the stable output of the pin PIN8 high level of single-chip microcomputer U1 by the voltage sample between resistance R 4 and the resistance R 5 is realized during voltage sample, and the time long enough, to guarantee the voltage sample result accurately and reliably.In the charging of above dual mode, all keep the detection to cell voltage, when cell voltage reaches when effectively being full of magnitude of voltage, single-chip microcomputer U1 turn-offs PMOS pipe Q1 and metal-oxide-semiconductor Q3, no longer accepts charging.Require the resistance R 2 can not be too little this moment, and the diode forward conducting voltage of metal-oxide-semiconductor Q3 is enough large, only has extremely faint electric current to realize the charge circuit that PMOS pipe Q1 and metal-oxide-semiconductor Q3 close rear battery, do not affect cell voltage and can keep again path and detect.No matter when, after the electronic cigarette charger removed, single-chip microcomputer U1 can both by the state to its pin PIN9 detect in the correct time, determine that fast charger removes, thereby withdraw from charged state.
When charge circuit when not charging, also can be used as the heavy-current discharge control circuit, drive atomizer work.The heavy-current discharge control circuit comprises capacitor C 1, capacitor C 2, capacitor C 3, resistance R 1, resistance R 3, resistance R 6, PMOS pipe Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, inductance L 1, battery BAT and single-chip microcomputer U1.When being used as power supply output and using, circuit load (atomizer) is connected to CH+, CH-two ends, and single-chip microcomputer U1 control metal-oxide-semiconductor Q1, Q3 conducting consist of the work loop that the output circuit by battery BAT, inductance L 1, PMOS pipe Q1, metal-oxide-semiconductor Q3 and atomizer forms.
The above only is some embodiments of the present invention; should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the invention design; can also make some similar distortion and improvement, these also should be considered as within protection scope of the present invention.
Claims (8)
1. the battery intelligent charge-discharge control circuit is characterized in that, comprising:
The charging input voltage detection circuit, the charging voltage of inputting when battery is charged;
Charging current control circuit, according to the charging voltage that previous step detects, control is to the electric current of battery charging;
Battery voltage detection circuit is used under the monitoring charged state voltage at battery two ends;
The heavy-current discharge control circuit is used for battery operated discharge;
Described charging input voltage detection circuit is connected with described charging current control circuit, described battery voltage detection circuit is connected with described charging current control circuit, and described charging input voltage detection circuit and described heavy-current discharge control circuit are the same path.
2. battery intelligent charge-discharge control circuit according to claim 1 is characterized in that, described charging input voltage detection circuit comprises inductance and metal-oxide-semiconductor, and described inductance is connected with described metal-oxide-semiconductor.
3. battery intelligent charge-discharge control circuit according to claim 1 is characterized in that, described charging current control circuit comprises inductance and transistor, and described inductance is connected with described transistor.
4. battery intelligent charge-discharge control circuit according to claim 1 is characterized in that, described battery voltage detection circuit comprises resistance and integrated circuit, and described resistance is connected with described integrated circuit.
5. battery intelligent charge-discharge control circuit according to claim 1, it is characterized in that, described heavy-current discharge control circuit comprises electric capacity, resistance, transistor, inductance, battery and single-chip microcomputer, and described electric capacity, resistance, transistor, inductance and battery are connected with described single-chip microcomputer and are connected.
6. battery intelligent charge-discharge control circuit according to claim 2, it is characterized in that, described charging input voltage detection circuit also comprises electric capacity, resistance, battery, single-chip microcomputer and integrated circuit, described electric capacity, resistance and battery are connected with described single-chip microcomputer and are connected, and described single-chip microcomputer is connected with described integrated circuit.
7. battery intelligent charge-discharge control circuit according to claim 3 is characterized in that, described charging current control circuit also comprises resistance, electric capacity, battery and single-chip microcomputer, and described resistance, electric capacity and battery are connected with described single-chip microcomputer and are connected.
8. battery intelligent charge-discharge control circuit according to claim 4 is characterized in that, described battery voltage detection circuit also comprises single-chip microcomputer, and described single-chip microcomputer is connected with described integrated circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103273105A CN102916461A (en) | 2012-09-06 | 2012-09-06 | Intelligent charge-discharge control circuit of battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103273105A CN102916461A (en) | 2012-09-06 | 2012-09-06 | Intelligent charge-discharge control circuit of battery |
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| CN2012103273105A Pending CN102916461A (en) | 2012-09-06 | 2012-09-06 | Intelligent charge-discharge control circuit of battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102832669A (en) * | 2012-09-06 | 2012-12-19 | 深圳市合元科技有限公司 | Intelligent charging and discharging control circuit for battery |
| CN103975501A (en) * | 2013-04-27 | 2014-08-06 | 向智勇 | Charging method based on electronic cigarette case and corresponding electronic cigarette case |
| WO2015013913A1 (en) * | 2013-07-31 | 2015-02-05 | 吉瑞高新科技股份有限公司 | Overcurrent and overvoltage protection circuit and method for electronic cigarette |
| CN104467747A (en) * | 2014-11-10 | 2015-03-25 | 上海激光电源设备有限责任公司 | Self-powered trigger |
| GB2528711A (en) * | 2014-07-29 | 2016-02-03 | Nicoventures Holdings Ltd | E-cigarette and re-charging pack |
| EP3113250A4 (en) * | 2014-02-27 | 2017-09-13 | Huizhou Kimree Technology Co., Ltd. Shenzhen Branch | Electronic cigarette battery assembly |
| US10218193B2 (en) | 2014-07-29 | 2019-02-26 | Nicoventures Holdings Limited | E-cigarette and re-charging pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102832669A (en) * | 2012-09-06 | 2012-12-19 | 深圳市合元科技有限公司 | Intelligent charging and discharging control circuit for battery |
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| EP3113250A4 (en) * | 2014-02-27 | 2017-09-13 | Huizhou Kimree Technology Co., Ltd. Shenzhen Branch | Electronic cigarette battery assembly |
| US9888726B2 (en) | 2014-02-27 | 2018-02-13 | Huizhou Kimree Technology Co., Ltd. Shenzhen Branch | Electronic cigarette battery assembly |
| US11831155B2 (en) | 2014-07-29 | 2023-11-28 | Nicoventures Trading Limited | E-cigarette and re-charging pack |
| US11811027B2 (en) | 2014-07-29 | 2023-11-07 | Nicoventures Trading Limited | E-cigarette and re-charging pack |
| GB2528711A (en) * | 2014-07-29 | 2016-02-03 | Nicoventures Holdings Ltd | E-cigarette and re-charging pack |
| GB2528711B (en) * | 2014-07-29 | 2019-02-20 | Nicoventures Holdings Ltd | E-cigarette and re-charging pack |
| US10218193B2 (en) | 2014-07-29 | 2019-02-26 | Nicoventures Holdings Limited | E-cigarette and re-charging pack |
| US10276898B2 (en) | 2014-07-29 | 2019-04-30 | Nicoventures Holdings Limited | E-cigarette and re-charging pack |
| US10536013B2 (en) | 2014-07-29 | 2020-01-14 | Nicoventures Holdings Limited | E-cigarette and re-charging pack |
| US10873196B2 (en) | 2014-07-29 | 2020-12-22 | Nicoventures Holdings Limited | E-cigarette and re-charging pack |
| CN104467747A (en) * | 2014-11-10 | 2015-03-25 | 上海激光电源设备有限责任公司 | Self-powered trigger |
| CN104467747B (en) * | 2014-11-10 | 2017-02-15 | 上海激光电源设备有限责任公司 | Self-powered trigger |
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Application publication date: 20130206 |