CN109066876A - A kind of switched charge chip and electronic equipment - Google Patents
A kind of switched charge chip and electronic equipment Download PDFInfo
- Publication number
- CN109066876A CN109066876A CN201811009917.2A CN201811009917A CN109066876A CN 109066876 A CN109066876 A CN 109066876A CN 201811009917 A CN201811009917 A CN 201811009917A CN 109066876 A CN109066876 A CN 109066876A
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- Prior art keywords
- switch
- charging
- switch tube
- charging chip
- circuit
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- 238000007600 charging Methods 0.000 claims abstract description 92
- 238000010280 constant potential charging Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 22
- 238000005070 sampling Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H02J7/0086—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明公开了一种开关充电芯片及电子设备，在恒压充电阶段且充电电流不大于预设电流时，可控分流电路将对电感所在的充电支路进行分流，亦即可控分流电路将对开关充电芯片的电压输出端上的电流进行分流，以此消耗多余的充电电流，保证开关充电芯片对电池提供的充电电流不大于电池所需要的充电电流。由此可知，本发明提供的开关充电芯片能够解决在恒压充电阶段电池电压被抬升的问题，避免出现电池被损坏的情况。
The invention discloses a switch charging chip and electronic equipment. In the constant voltage charging stage and the charging current is not greater than the preset current, the controllable shunt circuit will shunt the charging branch where the inductance is located, that is, the controllable shunt circuit will The current on the voltage output terminal of the switching charging chip is shunted to consume excess charging current, so as to ensure that the charging current provided by the switching charging chip to the battery is not greater than the charging current required by the battery. It can be seen from this that the switching charging chip provided by the present invention can solve the problem that the battery voltage is raised during the constant voltage charging stage, and avoid the situation that the battery is damaged.
Description
Technical field
The present invention relates to battery boosting technology fields, more specifically, design a kind of switched charge chip and electronics is set
It is standby.
Background technique
With the development of electronic technology, portable electronic device more and more comes into being, so that we
Life is more convenient, more rich and varied.Lithium ion battery is increasingly becoming portable due to having the characteristic that can be charged repeatedly
The power supply of electronic equipment, so that equally having a wide range of applications market to the charging chip that lithium ion battery charges.
Charging technique is divided into linear-charging and switched charge at present, usual switched charge it is more efficient.
Existing switched charge chip, which can choose, terminates algorithm configured with charging.Wherein, charging, which is not configured, terminates algorithm
Switch chip work when, alternatively, configured with charging terminate algorithm but selection close the algorithm switched charge chip operation when,
It is divided into three phases to the charging of lithium battery, specifically a kind of charge graph as shown in connection with fig. 1, wherein the activation stage is
To carry out preliminary filling to lithium battery, charging current ICHG can be 1/10th (100mA) of constant-current charge electric current (1A) at this time；And
Enter constant-current charging phase afterwards, charging current ICHG is that constant-current charge electric current is constant at this time, and the voltage VBAT of battery constantly rises；
Constant voltage charging phase is finally entered, charging current ICHG constantly reduces at this time, and the voltage VBAT of battery is remained unchanged.
But existing switched charge chip is in constant voltage charging phase, when charging current ICHG is reduced to certain value Ichg_
After th, charging current required for battery will be less than the charging current that switched charge chip provides, at this time the voltage meeting of battery
It is lifted by extra charging current, causes the damage of battery.
Summary of the invention
In view of this, the switched charge chip can solve the present invention provides a kind of switched charge chip and electronic equipment
Certainly the problem of constant voltage charging phase cell voltage is lifted, the impaired situation of battery is avoided the occurrence of.
To achieve the above object, technical solution provided by the invention is as follows:
A kind of switched charge chip, for charging for battery, the switched charge chip includes: first switch tube, second
Switching tube, inductance, driving circuit and controllable shunt circuit；
The control terminal of the first switch tube is connected with the driving circuit, and the first end of the first switch tube, which connects, to be supplied
Piezoelectric voltage end, the second end of the first switch tube connect the first end of the inductance, and the second end of the inductance is the electricity
Pond charging；
The control terminal of the second switch is connected with the driving circuit, and the first end of the second switch connects institute
State the first end of inductance, the second end ground connection of the second switch；
And the controllable shunt circuit is connected with the inductance any end, the controllable shunt circuit is filled in constant pressure
When electric stage and charging current are not more than predetermined current, charging paths where the inductance are shunted.
Optionally, the controllable shunt circuit includes:
Shunt assembly；
The third switching tube being connected with the shunt assembly, the first end of the third switching tube connect appointing for the inductance
The second end of meaning one end, the third switching tube connects the shunt assembly；
And the control sub-circuit being connected with the control terminal of the third switching tube, the control sub-circuit is in the perseverance
When charging stage and charging current being pressed to be less than predetermined current, the third switching tube is controlled by the shunt assembly and the charging
Branch connection.
Optionally, the shunt assembly is resistance, and the first end of the resistance connects the second end of the third switching tube,
The second end of the resistance is grounded.
Optionally, the shunt assembly is current source, and the input terminal of the current source connects the of the third switching tube
Two ends, the output end ground connection of the current source.
Optionally, the switched charge chip further include:
First capacitor and the second capacitor；
The first end of the first capacitor is grounded, the first end of the second end of the first capacitor and the first switch tube
It is connected；The first end of second capacitor is connected with the second end of the inductance, the second end ground connection of second capacitor.
Optionally, the switched charge chip further include:
4th switching tube and control circuit, the 4th switching tube are connected to the first switch tube and the supply voltage
Between end, wherein the control terminal of the 4th switching tube is connected with the control circuit, and the first end of the 4th switching tube connects
The supply voltage end is connect, the second end of the 4th switching tube connects the first end of the first switch tube.
Optionally, the control circuit is charge pump.
Optionally, the switched charge chip further include:
The sampling resistor being series in the charging paths；
The sample circuit being connected with the sampling resistor；
The driving circuit also based on the sample circuit output control instruction, adjust the first switch tube and/or
The duty ratio of the second switch, to maintain the voltage stabilization of the voltage output end of the switched charge chip.
Correspondingly, the electronic equipment includes above-mentioned switched charge chip the present invention also provides a kind of electronic equipment.
Compared to the prior art, technical solution provided by the invention has at least the following advantages:
The present invention provides a kind of switched charge chip and electronic equipment, in constant voltage charging phase and charging current is not more than
When predetermined current, controllable shunt circuit will shunt the charging paths where inductance, that is, controllable shunt circuit will be split
The electric current closed on the voltage output end of charging chip is shunted, and extra charging current is consumed with this, guarantees switched charge core
Piece is not more than charging current required for battery to the charging current that battery provides.It follows that switch provided by the invention fills
Electrical chip is able to solve the problem of constant voltage charging phase cell voltage is lifted, and avoids the occurrence of the impaired situation of battery.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of existing charge graph；
Fig. 2 is a kind of structural schematic diagram of switched charge chip provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram of another switched charge chip provided by the embodiments of the present application.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As described in background, when the existing switch chip work that charging end algorithm is not configured, alternatively, configured with filling
When electricity terminates algorithm but selects to close the switched charge chip operation of the algorithm, in constant voltage charging phase, work as charging current
After ICHG is reduced to certain value Ichg_th, charging current required for battery will be less than the charging that switched charge chip provides
Electric current, the voltage of battery can be lifted by extra charging current at this time, cause the damage of battery.
Based on this, the embodiment of the present application provides a kind of switched charge chip and electronic equipment, the switched charge chip energy
It enough solves the problems, such as to be lifted in constant voltage charging phase cell voltage, avoids the occurrence of the impaired situation of battery.Wherein, the application
The switched charge chip that embodiment provides can be that charging is not configured to terminate the switched charge chip of algorithm, alternatively, the application is real
The switched charge chip for applying example offer can be to terminate the switched charge that algorithm but the algorithm are in close state configured with charging
Chip is not particularly limited this application.To achieve the above object, technical solution provided by the embodiments of the present application is as follows, tool
Technical solution provided by the embodiments of the present application is described in detail in body combination Fig. 2 and Fig. 3.
Refering to what is shown in Fig. 2, being a kind of structural schematic diagram of switched charge chip provided by the embodiments of the present application, wherein open
It closes charging chip to be used to charge for battery, the switched charge chip includes:
First switch tube M1, second switch M2, inductance L, driving circuit and controllable shunt circuit；
The control terminal of the first switch tube M1 is connected with the driving circuit, and the first end of the first switch tube M1 connects
Meeting supply voltage end VBUS, the second end of the first switch tube M1 connects the first end of the inductance L, and the of the inductance L
Two ends are battery charging；
The control terminal of the second switch M2 is connected with the driving circuit, and the first end of the second switch M2 connects
Connect the first end of the inductance L, the second end ground connection of the second switch M2；
And the controllable shunt circuit is connected with the inductance L any end, the controllable shunt circuit is filled in constant pressure
When electric stage and charging current are not more than predetermined current, charging paths where the inductance L are shunted.Wherein, charging electricity
Stream is the average current to charge in charging paths for battery, when the average current is not more than predetermined current, to where inductance L
Charging paths are shunted.
Switched charge circuit provided by the embodiments of the present application is synchronous rectification switch charging circuit, wherein the driving electricity
Road drives the first switch tube M1 conducting in first state and the second switch M2 ends, and in the second state-driven institute
It states first switch tube M1 cut-off and the second switch M2 is connected, the first state and the second state alternate run,
By the alternate conduction and cut-off of first switch tube and second switch, the mode for realizing synchronous rectification fills battery
Electricity improves the charge efficiency of switched charge chip.
It should be understood that switched charge circuit provided by the embodiments of the present application, includes activation stage, perseverance to battery charging
Current charge stage and constant voltage charging phase, also, in constant voltage charging phase and when charging current is not more than predetermined current, controllable point
Current circuit will shunt the charging paths where inductance, that is, controllable shunt circuit is defeated by the voltage to switch charging chip
Electric current in outlet is shunted, and extra charging current is consumed with this, guarantees the charging that switched charge chip provides battery
Electric current is not more than charging current required for battery.It follows that switched charge chip provided by the embodiments of the present application can solve
Certainly the problem of constant voltage charging phase cell voltage is lifted, the impaired situation of battery is avoided the occurrence of.
Refering to what is shown in Fig. 2, the controllable shunt circuit provided by the embodiments of the present application includes:
Shunt assembly 100；
Described in the first end connection of the third switching tube M3, the third switching tube M3 that are connected with the shunt assembly 100
The second end of any end of inductance L, the third switching tube M3 connects the shunt assembly 100；
And the control sub-circuit 200 being connected with the control terminal of the third switching tube M3, the control sub-circuit 200
In the constant voltage charging phase and when charging current is less than predetermined current, the third switching tube M3 is controlled by the shunt assembly
100 are connected to the charging paths, i.e. third switching tube M3 is by the connecting pin of inductance L and third switching tube M3 and shunt assembly
100 connections.
In one embodiment of the application, as shown in Fig. 2, the shunt assembly 100 provided by the embodiments of the present application can be
Resistance, the first end of the resistance 100 connect the second end of the third switching tube M3, the second end ground connection of the resistance 100.
Alternatively, in one embodiment of the application, as shown in figure 3, for another switched charge provided by the embodiments of the present application
The structural schematic diagram of chip, wherein the shunt assembly 100 can be current source, and the input terminal of the current source 100 connects institute
State the second end of third switching tube M3, the output end ground connection of the current source 100.
Shunt assembly provided by the embodiments of the present application is used in constant voltage charging phase and charging current is no more than default electricity
When stream, the excess energy in charging paths, i.e. extra electric current in consumption charging paths are consumed, so that switched charge chip is
Energy required for the energy that battery provides charges no more than battery, avoids raising cell voltage and the case where damage occur.
It should be noted that the embodiment of the present application to the shunt assembly design parameter of offer with no restrictions, as long as meeting the energy of its consumption
Amount can be avoided battery and be overcharged.
Further, in order to optimize the performance of switched charge chip, with reference to shown in Fig. 1 or Fig. 3, the embodiment of the present application is provided
The switched charge chip further include:
First capacitor C1 and the second capacitor C2；
The first end of the first capacitor C1 is grounded, and the second end of the first capacitor C1 is with the first switch tube M1's
First end is connected；The first end of the second capacitor C2 is connected with the second end of the inductance L, and the second of the second capacitor C2
End ground connection.
It should be understood that by the setting of first capacitor and the second capacitor, can by capacitor to the signal of branch road into
Row filtering, while can guarantee that the voltage stability of branch road is high.
Refering to what is shown in Fig. 3, the switched charge chip provided by the embodiments of the present application further include:
4th switching tube M4 and control circuit, the third switching tube M4 are connected to the first switch tube M1 and the confession
Between the VBUS of piezoelectric voltage end, wherein the control terminal of the third switching tube M4 is connected with the control circuit, the third switch
The first end of pipe M4 connects the supply voltage end VBUS, and the second end of the third switching tube M4 connects the first switch tube
The first end of M1.
In one embodiment of the application, the control circuit provided by the present application is charge pump.Wherein, the embodiment of the present application
The type of switching tube in switched charge chip is not particularly limited, can be with N type switch tube, it can be right with p-type switching tube
This needs is specifically chosen according to practical application, and if first switch tube is p-type switching tube, second switch is N type switch tube
Deng.
And the switched charge chip provided by the embodiments of the present application further include:
The sampling resistor Rsns being series in the charging paths；Wherein, charging paths are first switch tube M1 and electricity
The tie point of close inductance L in the second tie point that sense L connected the first tie point and second switch M2 is connected with inductance L,
To the branch of the voltage output end of switched charge chip；
The sample circuit 300 being connected with the sampling resistor Rsns；
Control instruction of the driving circuit also based on the sample circuit 300 output, adjusts the first switch tube M1
And/or the duty ratio of the second switch M2, to maintain the voltage stabilization of the voltage output end of the switched charge chip.Into
One step, two junctions of sample circuit and sampling resistor can also be separately connected a capacitor, not do specifically to this application
Limitation.
In addition, switched charge chip provided by the embodiments of the present application further include band-gap reference circuit, loop control circuit and/
Or protection circuit, OTG pin, ENN pin, STAT pin, SDA pin, SCL pin etc. and SATA pin, SDA pin and SCL
The host etc. of pin connection, the application to this and without limitation, specifically depend on the circumstances.
Correspondingly, the electronic equipment includes that above-mentioned switch fills the embodiment of the present application also provides a kind of electronic equipment
Electrical chip.
The embodiment of the present application provides a kind of switched charge chip and electronic equipment, in constant voltage charging phase and charging current
When no more than predetermined current, controllable shunt circuit will shunt the charging paths where inductance, that is, controllable shunt circuit
Electric current on voltage output end to switch charging chip is shunted, extra charging current is consumed with this, guarantees switch
Charging chip is not more than charging current required for battery to the charging current that battery provides.It follows that the embodiment of the present application
The switched charge chip of offer is able to solve the problem of constant voltage charging phase cell voltage is lifted, and is avoided the occurrence of battery and is damaged
Bad situation.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009917.2A CN109066876A (en) | 2018-08-31 | 2018-08-31 | A kind of switched charge chip and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009917.2A CN109066876A (en) | 2018-08-31 | 2018-08-31 | A kind of switched charge chip and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109066876A true CN109066876A (en) | 2018-12-21 |
Family
ID=64758102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811009917.2A Pending CN109066876A (en) | 2018-08-31 | 2018-08-31 | A kind of switched charge chip and electronic equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN109066876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116418092A (en) * | 2023-06-02 | 2023-07-11 | 荣耀终端有限公司 | Charging control circuit, charging control method and electronic device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447283A (en) * | 2010-10-04 | 2012-05-09 | 联想（新加坡）私人有限公司 | Method and apparatus for charging batteries |
| CN102969757A (en) * | 2012-11-08 | 2013-03-13 | 中国电器科学研究院有限公司 | Micro-current constant voltage device |
| CN104092254A (en) * | 2014-06-19 | 2014-10-08 | 深圳天珑无线科技有限公司 | Charging method and charging system |
| CN104135047A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack, and equalization method |
| CN104901401A (en) * | 2015-05-22 | 2015-09-09 | 深圳天珑无线科技有限公司 | Charging method and charging system |
| CN107069863A (en) * | 2017-04-06 | 2017-08-18 | 河南森源电气股份有限公司 | A kind of constant-current charging of battery control circuit and charger |
| CN206650467U (en) * | 2017-04-18 | 2017-11-17 | 浙江诸暨奇创电子科技有限公司 | A kind of management of charging and discharging circuit of lithium battery |
| CN208707349U (en) * | 2018-08-31 | 2019-04-05 | 上海艾为电子技术股份有限公司 | A kind of switched charge chip and electronic equipment |
-
2018
- 2018-08-31 CN CN201811009917.2A patent/CN109066876A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447283A (en) * | 2010-10-04 | 2012-05-09 | 联想（新加坡）私人有限公司 | Method and apparatus for charging batteries |
| CN102969757A (en) * | 2012-11-08 | 2013-03-13 | 中国电器科学研究院有限公司 | Micro-current constant voltage device |
| CN104092254A (en) * | 2014-06-19 | 2014-10-08 | 深圳天珑无线科技有限公司 | Charging method and charging system |
| CN104135047A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack, and equalization method |
| CN104901401A (en) * | 2015-05-22 | 2015-09-09 | 深圳天珑无线科技有限公司 | Charging method and charging system |
| CN107069863A (en) * | 2017-04-06 | 2017-08-18 | 河南森源电气股份有限公司 | A kind of constant-current charging of battery control circuit and charger |
| CN206650467U (en) * | 2017-04-18 | 2017-11-17 | 浙江诸暨奇创电子科技有限公司 | A kind of management of charging and discharging circuit of lithium battery |
| CN208707349U (en) * | 2018-08-31 | 2019-04-05 | 上海艾为电子技术股份有限公司 | A kind of switched charge chip and electronic equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116418092A (en) * | 2023-06-02 | 2023-07-11 | 荣耀终端有限公司 | Charging control circuit, charging control method and electronic device |
| CN116418092B (en) * | 2023-06-02 | 2023-10-27 | 荣耀终端有限公司 | Charging control circuit, charging control method and electronic equipment |
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| CB02 | Change of applicant information |
Country or region after: China Address after: Room 1201, No.2, Lane 908, Xiuwen Road, Minhang District, Shanghai, 201199 Applicant after: SHANGHAI AWINIC TECHNOLOGY Co.,Ltd. Address before: Room 303-39, building 33, 680 Guiping Road, Xuhui District, Shanghai 200233 Applicant before: SHANGHAI AWINIC TECHNOLOGY Co.,Ltd. Country or region before: China |
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Application publication date: 20181221 |
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