CN102412610A - Linear-charging circuit and intelligent charging method thereof - Google Patents
Linear-charging circuit and intelligent charging method thereof Download PDFInfo
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- CN102412610A CN102412610A CN2011103991587A CN201110399158A CN102412610A CN 102412610 A CN102412610 A CN 102412610A CN 2011103991587 A CN2011103991587 A CN 2011103991587A CN 201110399158 A CN201110399158 A CN 201110399158A CN 102412610 A CN102412610 A CN 102412610A
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Abstract
The invention discloses an efficient linear circuit charging method, which is characterized by comprising the following steps: detecting the input end voltage Va and the output end voltage Vb of a linear charging circuit, and feeding back to a power supply management unit; detecting temperature information T and feeding back to the power supply management unit; and setting the charging current Ic according to the information (Va, Vb and T) fed back in real time by the detection circuit by the power supply management unit. At the same time, the invention discloses a particular circuit structure applied to the charging method. The circuit structure comprises the linear charging circuit, the power supply management unit, a first detection circuit, a second detection circuit, a third detection circuit and a temperature detection circuit; and the charging current is regulated dynamically according to parameters detected in real time, thus the charging circuit is charged always with the bearable maximal current, and the charging time is shortened effectively.
Description
Technical field
The present invention relates to a kind of linear-charging circuit and intelligent charging method thereof.
Background technology
The linear-charging circuit is because circuit is simple; Characteristics such as easy realization; In the charging circuit of portable electric appts, be used widely, but the caloric value of its distinct disadvantage when being work is bigger, the charging circuit that might cause of excessive temperature burns; So general linear-charging circuit all is provided with the peak power restriction, thereby controls its caloric value.For reaching this requirement, and support certain charge voltage range, the charging current of linear-charging circuit often is provided with smallerly.Existing scheme is maximum charging voltage Vamax, CC charging stage battery minimum voltage Vbmin and the intrinsic peak power Pmax of charging circuit that supports according to circuit, utilizes formula
to calculate charging current I.But its shortcoming is charging current and fixes, and less than the safe charging electric current I max that charging circuit can bear, so just can not make full use of the maximum firm power that charging circuit can bear, and makes the time of charging prolong greatly.
Summary of the invention
The present invention's first purpose is to propose a kind of charging method of linear circuit efficiently, dynamically adjusts current charging current according to the parameter of real-time detection, makes charging circuit charge with the maximum current that can bear all the time, shortens the charging interval effectively.
A kind of intelligent charging method of linear-charging circuit is characterized in that this method is following:
Detect linear charging circuit input terminal voltage Va and output end voltage Vb;
Detect the temperature information T of linear charging circuit;
According to real-time feedack Va, Vb, T, current charging current Ic is set;
Detect linear charging circuit output end current Ib,,, and repeat aforesaid operations if Ib then continues charging more than or equal to this definite value if Ib is lower than certain definite value and then breaks off charge power supply.Wherein, said definite value is the threshold values of setting in the PMU that is used to judge whether to satisfy outage condition, and this value generally between 100 to 200 milliamperes, is also decided by the demand of physical circuit.
When current charging current Ic is set; Calculate maximum chargeable electric current I according to formula
; And with I and Imax comparison; If I then is made as current charging current Ic with the Imax value more than or equal to Imax, if I then is made as current charging current Ic with the I value less than Imax, wherein; The maximum charging current that Imax allows for the linear-charging circuit, P (T) can bear power for the pairing charging circuit of operating ambient temperature T.
The present invention's intelligent charging method has following advantage:
Increased detection to temperature parameter; Guarantee that the linear-charging circuit is in safe working temperature, reduce the too high and risk of burning of circuit Yin Wendu greatly, and dynamic adjustments charging current Ic makes it be in the maximum of safe range all the time; Shorten the charging interval effectively, improve charge efficiency.
Another object of the present invention is to propose a kind of linear-charging circuit that adopts above-mentioned intelligent charging method, it is characterized in that: said linear-charging circuit correspondence is provided with PMU, first testing circuit, second testing circuit, three testing circuit and temperature sensing circuit.
Said linear-charging circuit input end connects power end; Output connects battery; It also is provided with a control end, is electrically connected with said PMU output, and said PMU sends corresponding control signal through the output to the linear-charging circuit; Through the inner resistance of linear adjustment charging circuit, make the corresponding change of charging current Ic.
Said first testing circuit is serially connected with between linear-charging circuit output end and the battery, and output connects the PMU first input end, is used to detect linear charging circuit output end current Ib, and feeds back to PMU.PMU detects linear charging circuit output end current Ib through testing circuit, if Ib is lower than certain definite value and then breaks off charge power supply, if Ib then continues charging more than or equal to this definite value.Wherein, said definite value is the threshold values of setting in the PMU that is used to judge whether to satisfy outage condition, and this value generally between 100 to 200 milliamperes, is also decided by the demand of physical circuit.
The said second testing circuit input is electrically connected with the linear-charging circuit input end, and output connects PMU second input, is used to detect the voltage Va of linear charging circuit input, and feeds back to PMU.
Said three testing circuit input is electrically connected with the linear-charging circuit output end, and its output connects PMU the 3rd input, is used to detect the voltage Vb of linear charging circuit output, and feeds back to PMU.
Said temperature sensing circuit includes temperature sensor, and its output connects the PMU four-input terminal, is used to detect the work temperature of linear charging circuit, and feeds back to PMU.
Said PMU is according to the real-time feedack Va of testing circuit, Vb, T; Utilize formula
to calculate maximum chargeable electric current I; And with I and Imax comparison; If I then is made as current charging current Ic with the Imax value more than or equal to Imax, if I then is made as current charging current Ic with the I value less than Imax.Wherein, P (T) can bear power for the pairing charging circuit of operating ambient temperature T, and Va is the magnitude of voltage of charging circuit input, and Vb is the magnitude of voltage of charging circuit output, the maximum charging current that Imax allows for the linear-charging circuit.
The present invention's linear-charging circuit has following advantage:
Increased temperature sensing circuit; Guarantee that the linear-charging circuit is in safe working temperature; Reduce the too high and risk of burning of circuit Yin Wendu greatly, and data computation charging current and the dynamic adjustments of utilizing each testing circuit to present, make it be in the maximum of safe range all the time; Shorten the charging interval effectively, improve charge efficiency.
As a kind of improvement of such scheme, also be serially connected with an overvoltage protection IC between said power end and the linear-charging circuit input end, prevent that the linear-charging circuit from burning because of input voltage is too high, ensures the safety of linear charging circuit.
Figure of description
Fig. 1 is the circuit structure block diagram of prior art scheme.
Fig. 2 is the process chart of prior art scheme.
Fig. 3 is the present invention's circuit structure block diagram.
Fig. 4 is the present invention's process chart.
Embodiment
According to Fig. 1 to Fig. 4 the present invention's embodiment is described below at present:
To shown in Figure 2, the prior art scheme: comprise linear-charging circuit 1, its input a connects power end 2, and output b is connected with battery 3, and said linear-charging circuit also is provided with a control end c, is connected with PMU 4 like Fig. 1.
Between linear charging circuit output b and battery 3, also be serially connected with first testing circuit 5; The output of said first testing circuit 5 connects the first input end of PMU 4; Be used to detect linear charging circuit output end current Ib; If Ib is lower than certain definite value and then breaks off charge power supply, charging finishes; If Ib then continues charging more than or equal to this definite value.This value generally between 100 to 200 milliamperes, is also decided by the demand of physical circuit.
As a kind of improvement of such scheme, also be connected in series between said power end 2 and the linear-charging circuit 1 input a and establish an overvoltage protection IC.
To shown in Figure 4, the present invention has additional second testing circuit 6, three testing circuit 7 and temperature sensing circuit 8 on the basis of existing scheme, be used to PMU real-time detection data are provided, to calculate charging current Ic like Fig. 3.
Said second testing circuit, 6 inputs are electrically connected with the input a of linear-charging circuit 1, and output connects PMU 4 second inputs, is used to detect the voltage Va of linear charging circuit input, and feeds back to PMU.
Said three testing circuit 7 inputs are electrically connected with the output b of linear-charging circuit 1, and its output connects PMU 4 the 3rd input, is used to detect the voltage Vb of linear charging circuit output, and feeds back to PMU.
Said temperature sensing circuit 8 includes temperature sensor, and its output connects PMU 4 four-input terminals, is used to detect the work temperature of linear charging circuit, and feeds back to PMU.
Said PMU is according to the real-time feedack Va of testing circuit, Vb, T; Utilize formula
to calculate maximum chargeable electric current I; And with I and Imax comparison; If I then is made as current charging current Ic with the Imax value more than or equal to Imax, if I then is made as current charging current Ic with the I value less than Imax.Wherein, P (T) can bear power for the pairing charging circuit of operating ambient temperature T, and Va is the magnitude of voltage of charging circuit input, and Vb is the magnitude of voltage of charging circuit output, the maximum charging current that Imax allows for the linear-charging circuit.
Said PMU 4 sends corresponding control signal through the control end c to linear-charging circuit 1, through the inner resistance of linear adjustment charging circuit, makes the corresponding change of charging current Ic.
Such scheme does not limit the present invention with this for the present invention's preferred embodiments.Every application the present invention's method is approximate or identical, is the improvement that make on the basis again or with the present invention's circuit, all belongs to the scope of this patent protection.
Claims (3)
1. the intelligent charging method of a linear-charging circuit is characterized in that this method is following:
Detect linear charging circuit input terminal voltage Va and output end voltage Vb;
Detect the temperature information T of linear charging circuit;
According to real-time feedack Va, Vb, T, current charging current Ic is set;
Detect linear charging circuit output end current Ib,,, and repeat aforesaid operations if Ib then continues charging more than or equal to this definite value if Ib is lower than certain definite value and then breaks off charge power supply;
When current charging current Ic is set; Calculate maximum chargeable electric current I according to formula
earlier; Then I and Imax are compared; If I then is made as current charging current Ic with the Imax value more than or equal to Imax, if I then is made as current charging current Ic with the I value less than Imax; Wherein, the maximum charging current that Imax allows for the linear-charging circuit, P (T) can bear power for the pairing charging circuit of operating ambient temperature T.
2. linear-charging circuit, it is characterized in that: said linear-charging circuit also is provided with PMU, first testing circuit, second testing circuit, three testing circuit and temperature sensing circuit;
Said linear-charging circuit input end connects power end, and output connects battery, and it also is provided with a control end, is electrically connected with said PMU output;
Said first testing circuit is serially connected with between linear-charging circuit output end and the battery, and output connects the PMU first input end;
The said second testing circuit input is electrically connected with the linear-charging circuit input end, and output connects PMU second input;
Said three testing circuit input is electrically connected with the linear-charging circuit output end, and its output connects PMU the 3rd input;
Said temperature sensing circuit includes temperature sensor, and its output connects the PMU four-input terminal.
3. a kind of linear-charging circuit according to claim 2 is characterized in that: also be connected in series between said power end and the linear-charging circuit input end and be provided with an overvoltage protection IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110399158 CN102412610B (en) | 2011-12-05 | 2011-12-05 | Linear-charging circuit and intelligent charging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110399158 CN102412610B (en) | 2011-12-05 | 2011-12-05 | Linear-charging circuit and intelligent charging method thereof |
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| CN102412610A true CN102412610A (en) | 2012-04-11 |
| CN102412610B CN102412610B (en) | 2013-07-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165349A1 (en) * | 2015-09-29 | 2016-10-20 | 中兴通讯股份有限公司 | Charging method and device |
| WO2017202179A1 (en) * | 2016-05-23 | 2017-11-30 | 华为技术有限公司 | Battery charging unit, method, terminal, power adapter and storage medium |
| CN111193296A (en) * | 2018-11-15 | 2020-05-22 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
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| CN1512619A (en) * | 2002-12-31 | 2004-07-14 | 广达电脑股份有限公司 | Two section type charging device |
| US6861824B1 (en) * | 2002-07-10 | 2005-03-01 | Arquesttechnology, Inc. | Charger system with dual-level current regulation and dual-level thermal regulation |
| CN101741119A (en) * | 2008-11-25 | 2010-06-16 | 半导体元件工业有限责任公司 | Multiple mode battery charger |
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2011
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6861824B1 (en) * | 2002-07-10 | 2005-03-01 | Arquesttechnology, Inc. | Charger system with dual-level current regulation and dual-level thermal regulation |
| CN1512619A (en) * | 2002-12-31 | 2004-07-14 | 广达电脑股份有限公司 | Two section type charging device |
| CN101741119A (en) * | 2008-11-25 | 2010-06-16 | 半导体元件工业有限责任公司 | Multiple mode battery charger |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165349A1 (en) * | 2015-09-29 | 2016-10-20 | 中兴通讯股份有限公司 | Charging method and device |
| CN106558894A (en) * | 2015-09-29 | 2017-04-05 | 中兴通讯股份有限公司 | A kind of method and device for realizing charging |
| WO2017202179A1 (en) * | 2016-05-23 | 2017-11-30 | 华为技术有限公司 | Battery charging unit, method, terminal, power adapter and storage medium |
| CN107437826A (en) * | 2016-05-23 | 2017-12-05 | 华为终端（东莞）有限公司 | A kind of battery charger, method, terminal, power supply adaptor and storage medium |
| JP2019520017A (en) * | 2016-05-23 | 2019-07-11 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Battery charging device and method, terminal, power adapter and storage medium |
| CN107437826B (en) * | 2016-05-23 | 2020-12-04 | 华为终端有限公司 | Battery charging device, method, terminal, power adapter and storage medium |
| US11011925B2 (en) | 2016-05-23 | 2021-05-18 | Huawei Technologies Co., Ltd. | Battery charging apparatus and method, terminal, power adapter, and storage medium |
| CN111193296A (en) * | 2018-11-15 | 2020-05-22 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
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| CN102412610B (en) | 2013-07-10 |
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Application publication date: 20120411 Assignee: VIVO MOBILE COMMUNICATION CO., LTD. Assignor: Guangdong Bubugao Electronic Industry Co., Ltd. Contract record no.: 2013440000551 Denomination of invention: Linear-charging circuit and intelligent charging method thereof Granted publication date: 20130710 License type: Exclusive License Record date: 20131231 |
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Application publication date: 20120411 Assignee: ACCO ELECTRONIC SCIENCE & TECHNOLOGY CO., LTD. Assignor: Guangdong Bubugao Electronic Industry Co., Ltd. Contract record no.: 2013440000551 Denomination of invention: Linear-charging circuit and intelligent charging method thereof Granted publication date: 20130710 License type: Exclusive License Record date: 20131223 |
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Application publication date: 20120411 Assignee: VIVO MOBILE COMMUNICATION CO., LTD. Assignor: Guangdong Bubugao Electronic Industry Co., Ltd. Contract record no.: 2013440000551 Denomination of invention: Linear-charging circuit and intelligent charging method thereof Granted publication date: 20130710 License type: Exclusive License Record date: 20131231 |
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Owner name: VIVO MOBILE COMMUNICATION CO., LTD. Free format text: FORMER OWNER: BUBUGAO ELECTRONIC INDUSTRY CO LTD, GUANGDONG Effective date: 20150324 |
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Effective date of registration: 20150324 Address after: 283 No. 523000 Guangdong province Dongguan city Changan town usha BBK Avenue Patentee after: VIVO MOBILE COMMUNICATION CO., LTD. Address before: 523850 Guangdong Province, Dongguan city Changan town usha management area Patentee before: Guangdong Bubugao Electronic Industry Co., Ltd. |