CN103378616A - Lithium battery power supply management circuit - Google Patents
Lithium battery power supply management circuit Download PDFInfo
- Publication number
- CN103378616A CN103378616A CN2012101137407A CN201210113740A CN103378616A CN 103378616 A CN103378616 A CN 103378616A CN 2012101137407 A CN2012101137407 A CN 2012101137407A CN 201210113740 A CN201210113740 A CN 201210113740A CN 103378616 A CN103378616 A CN 103378616A
- Authority
- CN
- China
- Prior art keywords
- switch
- lithium battery
- power supply
- battery power
- inductance
- 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.)
- Pending
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
A lithium battery power supply management circuit comprises a sixth switch, a fourth switch, an inductor and a fifth switch which are sequentially connected in series, wherein the other end of the sixth switch is connected with a lithium battery, and the other end of the fifth switch is connected with an output power supply. The lithium battery power supply management circuit also comprises a first capacitor, a third switch, a second switch, a first switch and a second capacitor, wherein one end of the first capacitor is connected with a connection point of the sixth switch and the fourth switch, and the other end of the first capacitor is grounded; one end of the third switch is connected with a connection point of the fourth switch and the inductor, and the other end of the third switch is grounded; one end of the second switch is connected with a connection point of the inductor and the fifth switch, and the other end of the second switch is grounded; one end of the first switch is connected with the connection point of the inductor and the fifth switch, and the other end of the first switch is connected with an input power supply; and one end of the second inductor is connected with a connection point of the fifth switch and the output power supply, and the other end of the first capacitor is grounded. According to the lithium battery power supply management circuit in the present invention, only one inductor and six switching tubes are needed, devices are fully utilized, and cost is reduced.
Description
Technical field
The present invention relates to field of power management, particularly a kind of lithium battery power management circuits of abundant multiplexing device.
Background technology
As shown in Figure 1, a present typical single-lithium-battery pool equipment generally includes charging management chip, Switching Power Supply output.This system comprises a Charge Management subsystem responsible and utilizes external power source to lithium cell charging, and a discharge ADMINISTRATION SUBSYSTEM utilizes lithium battery to system power supply.Usually above-mentioned two sub-systems have independently Switching Power Supply and external inductors.To realize high efficiency power supply conversion.
The Charge Management subsystem comprises a Switching Power Supply usually, and constant current constant voltage control.If input power is higher than lithium battery voltage.We are called the step-down charging.As shown in Figure 2, the step-down switching power supply needs two switching tube S1 and S2, step-down control module, 1, one output capacitance C1 of an inductance L.The step-down control module produces pwm signal control S1 and S2 (PWM is pulse-width modulation), and they are responsible for input voltage is passed the voltage that changes into a little more than lithium battery.And the constant current constant voltage system is switching tube S3 and constant current constant voltage control module composition, according to the charging requirement that lithium battery needs, realizes first little current constant current charges (also claiming trickle), then large current constant current charges, at last constant-potential charge.The constant current constant voltage control module is so that switching tube S3 shows as constant-current source or LDO output realizes above-mentioned functions.If input power forces down than lithium battery.We are called boost charge.As shown in Figure 3, the boosted switch power supply needs two switching tube S1 and S2, boosting rectifier control module, 1, one output capacitance C1 of an inductance L.The boosting rectifier control module produces pwm signal control S1 and S2 (PWM is pulse-width modulation), and they are responsible for input voltage is passed the voltage that changes into a little more than lithium battery.And the constant current constant voltage system is switching tube S3 and constant current constant voltage control module composition, according to the charging requirement that lithium battery needs, realizes first little current constant current charges (also claiming trickle), then large current constant current charges, at last constant-potential charge.The constant current constant voltage control module is so that switching tube S3 shows as constant-current source or LDO output realizes above-mentioned functions.
The discharge ADMINISTRATION SUBSYSTEM is a simple Switching Power Supply usually, can show as three kinds of forms according to the input and output voltage difference.Usually between the 4.2V, if need 2.5V or the such output voltage of 1.8V, then system adopts the voltage dropping power supply conversion to single-lithium-battery pond operating voltage range at 2.9V.
As shown in Figure 4, the step-down switching power supply needs two switching tube S1 and S2, step-down control module, 1, one output capacitance C1 of an inductance L.The step-down control module produces pwm signal control S1 and S2 (PWM is pulse-width modulation), and they are responsible for changing lithium battery high pressure biography into target voltage, and this target voltage is lower than lithium battery voltage.
If need the such output voltage that is higher than the single-lithium-battery cell voltage of 5V or 12V, then system adopts the booster power conversion.
As shown in Figure 5, the boosted switch power supply needs two switching tube S1 and S2, boosting rectifier control module, 1, one output capacitance C1 of an inductance L.The boosting rectifier control module produces pwm signal control S1 and S2 (PWM is pulse-width modulation), and they are responsible for changing lithium battery high pressure biography into target voltage, and this target voltage is higher than lithium battery voltage.
If need near the such output voltage the single-lithium-battery cell voltage of 3.6V or 3.3V, then system adopts the conversion of buck-boost power supply.
As shown in Figure 6, the buck-boost Switching Power Supply needs 4 switching tube S1, S2, S3 and S4, buck-boost control module, 1, one output capacitance C1 of an inductance L.The boosting rectifier control module produces pwm signal control S1, S2, S3 and S4 (PWM is pulse-width modulation), and S1 and S3 are as the simultaneously conducting of one group of switch or close in the time of work, and S2 and S4 are as the simultaneously conducting of one group of switch or close.They are responsible for changing lithium battery high pressure biography into target voltage, and this target voltage is near lithium battery voltage.Framework shown in Figure 6 also can be realized simple boosting or step-down, but owing to 4 switching tubes are arranged simultaneously in work, the drive current of switching tube and conducting resistance all will consume extra power consumption, so efficient will be hanged down much than Fig. 4 and Fig. 5.
For realizing the management of charging and discharging of high efficiency, wide-voltage range.Whole system needs integrated 2 kinds of Charge Management subsystems and 3 kinds of discharge ADMINISTRATION SUBSYSTEM.If directly integrated, 5 inductance will be arranged, 12 switching tubes in the system.Because the quantity of inductance and switching tube directly affects system cost, so many inductance and switching tubes will cause system cost sharply to rise.
Summary of the invention
The object of the present invention is to provide a kind of Charge Management and discharge management that realizes wide-voltage range, reduce the lithium battery power management circuits of system cost.
For solving the problems of the technologies described above, lithium battery power management circuits of the present invention comprises the 6th switch, the 4th switch, inductance and the 5th switch of successively series connection, an other end of described the 6th switch is connected with lithium battery, and an other end of described the 5th switch is connected with out-put supply; The first electric capacity, described the first electric capacity one end is connected in the tie point of described the 6th switch and described the 4th switch, an other end ground connection of described the first electric capacity; The 3rd switch, described the 3rd switch one end is connected in the tie point of described the 4th switch and described inductance, an other end ground connection of described the 3rd switch; Second switch, described second switch one end is connected in the tie point of described inductance and described the 5th switch, an other end ground connection of described second switch; The first switch, described the first switch one end is connected in the tie point of described inductance and described the 5th switch, and an other end of described the first switch is connected with input power; The second electric capacity, described the second electric capacity one end is connected in the tie point of described the 5th switch and described out-put supply, an other end ground connection of described the first electric capacity.
Described lithium battery power management circuits also further comprises a control module, and described control module is connected with described the first switch, described second switch, described the 3rd switch, described the 4th switch and described the 5th switch.
Lithium battery power management circuits of the present invention only needs 1 inductance and 6 switching tubes, high efficiency Charge Management and the discharge management that has realized wide-voltage range.Simultaneously, each device can be utilized fully, greatly reduces the cost of system.
Description of drawings
Fig. 1 is prior art single-lithium-battery pool equipment system block diagram;
Fig. 2 is prior art step-down Charge Management subsystem architecture figure;
Fig. 3 is prior art boost charge ADMINISTRATION SUBSYSTEM Organization Chart;
Fig. 4 is prior art voltage dropping power supply conversion subsystem Organization Chart;
Fig. 5 is prior art booster power conversion subsystem Organization Chart;
Fig. 6 is prior art buck-boost power supply conversion subsystem Organization Chart;
Fig. 7 is lithium battery power management circuits circuit diagram of the present invention;
Embodiment
Below in conjunction with accompanying drawing lithium battery power management circuits of the present invention is described in further detail.
As shown in Figure 7, lithium battery power management circuits of the present invention comprises the 6th switch S 6, the 4th switch S 4, inductance L 1 and the 5th switch S 5 of successively series connection, an other end of the 6th switch S 6 is connected with lithium battery, and an other end of the 5th switch S 5 is connected with out-put supply; The first capacitor C 1, the first capacitor C 1 one ends are connected in the tie point of the 6th switch S 6 and the 4th switch S 4, an other end ground connection of the first capacitor C 1; The 3rd switch S 3, the three switch S 3 one ends are connected in the tie point of the 4th switch S 4 and inductance L 1, an other end ground connection of the 3rd switch S 3; Second switch S2, second switch S2 one end is connected in the tie point of inductance L 1 and the 5th switch S 5, the other end ground connection of second switch S2; The first switch S 1, the first switch S 1 one ends are connected in the tie point of inductance L 1 and the 5th switch S 5, and an other end of the first switch S 1 is connected with input power; The second capacitor C 2, the second capacitor C 2 one ends are connected in the tie point of the 5th switch S 5 and out-put supply, an other end ground connection of the first capacitor C 1.The lithium battery power management circuits also further comprises a control module, and control module is connected with the first switch S 1, second switch S2, the 3rd switch S 3, the 4th switch S 4 and the 5th switch S 5.
During the step-down charging, switching tube the first switch S 1 and second switch S2 work, the 4th switch S 4 continues conducting.The 6th switch S 6 is as the constant current constant voltage control valve, and other switching tube disconnects.
During boost charge, switching tube the first switch S 1 continues conducting, the 3rd switch S 3 and 4 work of the 4th switch S, and the 6th switch S 6 is as the constant current constant voltage control valve, and other switching tube disconnects.
During the buck-boost charging, switching tube the first switch S 1, second switch S2, the 3rd switch S 3 and 4 work of the 4th switch S, the 6th switch S 6 is as the constant current constant voltage control valve, and the 5th switch S 5 disconnects.
The charging current path is direction as shown in phantom in FIG..
During the step-down discharge, switching tube the 6th switch S 6 and the 5th switch S 5 continue conducting, the 3rd switch S 3 and 4 work of the 4th switch S.Other switching tube disconnects.
When boosting discharge, switching tube the 6th switch S 6 and the 4th switch S 4 continue conducting, second switch S2 and 5 work of the 5th switch S.Other switching tube disconnects.
During the buck-boost discharge, switching tube the 6th switch S 6 continues conducting, second switch S2, the 3rd switch S 3, the 4th switch S 4 and 5 work of the 5th switch S, and the first switch S 1 disconnects.
Discharge current path is direction shown in solid line among the figure.
Lithium battery power management circuits of the present invention only needs 1 inductance and 6 switching tubes, high efficiency Charge Management and the discharge management that has realized wide-voltage range.Simultaneously, each device can be utilized fully, greatly reduces the cost of system.
Below the preferred embodiment of the invention is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all modification that is equal to or replacement under the prerequisite of the invention spirit, the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (2)
1. the lithium battery power management circuits is characterized in that, comprising:
The 6th switch, the 4th switch, inductance and the 5th switch of connecting successively, an other end of described the 6th switch is connected with lithium battery, and an other end of described the 5th switch is connected with out-put supply;
The first electric capacity, described the first electric capacity one end is connected in the tie point of described the 6th switch and described the 4th switch, an other end ground connection of described the first electric capacity;
The 3rd switch, described the 3rd switch one end is connected in the tie point of described the 4th switch and described inductance, an other end ground connection of described the 3rd switch;
Second switch, described second switch one end is connected in the tie point of described inductance and described the 5th switch, an other end ground connection of described second switch;
The first switch, described the first switch one end is connected in the tie point of described inductance and described the 5th switch, and an other end of described the first switch is connected with input power;
The second electric capacity, described the second electric capacity one end is connected in the tie point of described the 5th switch and described out-put supply, an other end ground connection of described the first electric capacity.
2. lithium battery power management circuits according to claim 1, it is characterized in that, described lithium battery power management circuits also further comprises a control module, and described control module is connected with described the first switch, described second switch, described the 3rd switch, described the 4th switch and described the 5th switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101137407A CN103378616A (en) | 2012-04-18 | 2012-04-18 | Lithium battery power supply management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101137407A CN103378616A (en) | 2012-04-18 | 2012-04-18 | Lithium battery power supply management circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103378616A true CN103378616A (en) | 2013-10-30 |
Family
ID=49463347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101137407A Pending CN103378616A (en) | 2012-04-18 | 2012-04-18 | Lithium battery power supply management circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103378616A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143850A (en) * | 2014-08-20 | 2014-11-12 | 南京矽力杰半导体技术有限公司 | Battery charge and discharge management circuit and electronic device applying same |
| CN104158255A (en) * | 2014-08-20 | 2014-11-19 | 矽力杰半导体技术(杭州)有限公司 | Charge and discharge management system and mobile power supply with application of charge and discharge management system |
| CN106546800A (en) * | 2017-01-25 | 2017-03-29 | 北京鸿智电通科技有限公司 | A kind of charge/discharge current detection circuit for being applied to charging quickly source |
| CN108445273A (en) * | 2018-04-08 | 2018-08-24 | 佳电气有限公司 | Intelligent meter box |
| US10250060B2 (en) | 2015-11-20 | 2019-04-02 | Silergy Semiconductor Technology (Hangzhou) Ltd | Adaptive charge control circuit and control method for switching charger |
| CN111030238A (en) * | 2019-12-25 | 2020-04-17 | 启攀微电子（上海）有限公司 | Charging circuit of charger of lithium battery |
| WO2022183720A1 (en) * | 2021-03-01 | 2022-09-09 | 株洲中车时代电气股份有限公司 | Adaptive bidirectional dcdc charging and discharging control method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006271112A (en) * | 2005-03-24 | 2006-10-05 | Sony Ericsson Mobilecommunications Japan Inc | Power supply device for power amplifier |
| JP2007097252A (en) * | 2005-09-27 | 2007-04-12 | Nayuta:Kk | Power unit and its bidirectional step-up/step-down converter |
| JP2007143340A (en) * | 2005-11-21 | 2007-06-07 | Ricoh Co Ltd | Power device and image forming apparatus |
| WO2011009690A1 (en) * | 2009-07-20 | 2011-01-27 | Sb Limotive Company Ltd. | Hybrid battery system |
-
2012
- 2012-04-18 CN CN2012101137407A patent/CN103378616A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006271112A (en) * | 2005-03-24 | 2006-10-05 | Sony Ericsson Mobilecommunications Japan Inc | Power supply device for power amplifier |
| JP2007097252A (en) * | 2005-09-27 | 2007-04-12 | Nayuta:Kk | Power unit and its bidirectional step-up/step-down converter |
| JP2007143340A (en) * | 2005-11-21 | 2007-06-07 | Ricoh Co Ltd | Power device and image forming apparatus |
| WO2011009690A1 (en) * | 2009-07-20 | 2011-01-27 | Sb Limotive Company Ltd. | Hybrid battery system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143850A (en) * | 2014-08-20 | 2014-11-12 | 南京矽力杰半导体技术有限公司 | Battery charge and discharge management circuit and electronic device applying same |
| CN104158255A (en) * | 2014-08-20 | 2014-11-19 | 矽力杰半导体技术(杭州)有限公司 | Charge and discharge management system and mobile power supply with application of charge and discharge management system |
| US9654005B2 (en) | 2014-08-20 | 2017-05-16 | Silergy Semiconductor Technology (Hangzhou) Ltd | Battery charge and discharge management circuit and electronic device thereof |
| US9906059B2 (en) | 2014-08-20 | 2018-02-27 | Silergy Semiconductor Technology (Hangzhou) Ltd | Charge and discharge management system and movable power source using the same |
| TWI683503B (en) * | 2014-08-20 | 2020-01-21 | 大陸商矽力杰半導體技術（杭州）有限公司 | Battery charge and discharge management circuit and electronic device applying same |
| US10250060B2 (en) | 2015-11-20 | 2019-04-02 | Silergy Semiconductor Technology (Hangzhou) Ltd | Adaptive charge control circuit and control method for switching charger |
| CN106546800A (en) * | 2017-01-25 | 2017-03-29 | 北京鸿智电通科技有限公司 | A kind of charge/discharge current detection circuit for being applied to charging quickly source |
| CN106546800B (en) * | 2017-01-25 | 2019-06-18 | 北京鸿智电通科技有限公司 | A kind of charge/discharge current detection circuit applied to fast charge power supply |
| CN108445273A (en) * | 2018-04-08 | 2018-08-24 | 佳电气有限公司 | Intelligent meter box |
| CN111030238A (en) * | 2019-12-25 | 2020-04-17 | 启攀微电子（上海）有限公司 | Charging circuit of charger of lithium battery |
| WO2022183720A1 (en) * | 2021-03-01 | 2022-09-09 | 株洲中车时代电气股份有限公司 | Adaptive bidirectional dcdc charging and discharging control method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103378616A (en) | Lithium battery power supply management circuit | |
| CN106605356B (en) | It is charged using the multiphase battery of boosting bypass | |
| CN107787540B (en) | System and method for bidirectional dual port battery charging with boost functionality | |
| CN101247053B (en) | Battery-connected voltage-boosting and reducing converting circuit and device, DC back-up power device | |
| US11522466B1 (en) | Power conversion structure, power conversion method, electronic device including power conversion structure, and chip unit | |
| US20120212182A1 (en) | Battery system with balance function | |
| CN101369775A (en) | High efficiency charge pump DC to DC converter circuits and methods | |
| CN109038744A (en) | Battery charging is carried out for boosting using reusable inductor | |
| US9768682B2 (en) | Switched capacitors with inverted break-before-make without external filtering load capacitor | |
| CN203895095U (en) | Backlight power supply circuit of display screen | |
| CN114142723B (en) | Power conversion structure and electronic equipment comprising same | |
| CN104704730A (en) | Independent output control for single-inductor, bipolar outputs, buck-boost converters | |
| CN102629825A (en) | Circuit structure of realizing synchronous buck-type charging and boost-type power supply by using single inductor | |
| CN114552975B (en) | Power conversion system, electronic equipment comprising same and integrated circuit | |
| CN101944754A (en) | Direct current step-up/step-down circuit | |
| CN104319798A (en) | Bidirectional DCDC converter and optical storage system | |
| CN102842279A (en) | Display screen and backlight drive method thereof | |
| CN103532382A (en) | Switching power supply circuit | |
| CN103001498B (en) | Backlight-driven direct-current booster topology circuit | |
| CN104979873A (en) | Circuit structure integrated with battery charger and direct-current booster | |
| Boera et al. | Design of a SIBO DC-DC converter for AMOLED display driving | |
| CN201947182U (en) | Bi-directional DC/DC (direct current to direct current) power supply | |
| CN108599593A (en) | One kind is from the high boost rectifier of current-sharing module large capacity | |
| CN212462817U (en) | Charging circuit | |
| CN209419304U (en) | Power supply unit and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131030 |