CN107742909A - Charging circuit, intelligent terminal and its charging method - Google Patents
Charging circuit, intelligent terminal and its charging method Download PDFInfo
- Publication number
- CN107742909A CN107742909A CN201711039573.5A CN201711039573A CN107742909A CN 107742909 A CN107742909 A CN 107742909A CN 201711039573 A CN201711039573 A CN 201711039573A CN 107742909 A CN107742909 A CN 107742909A
- Authority
- CN
- China
- Prior art keywords
- charging
- voltage
- branch
- low
- voltage charging
- 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
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H02J7/0003—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a kind of charging circuit, intelligent terminal and charging method, and wherein charging circuit includes charging inlet, switching circuit, high-voltage charging branch road, low pressure charging paths and control unit；Wherein, charging inlet, it is connected with adapter, receives the electric energy of input；High-voltage charging branch road, whether the charge type of test adaptor is high-voltage charging type after electricity on charging inlet, and battery is charged using high pressure fast charge pattern if so, opening high-voltage charging branch road；If it is not, control unit closes high-voltage charging branch road by switching circuit, and open low pressure charging paths；Whether the charge type of low pressure charging paths test adaptor is low pressure charge type, and battery is charged using low pressure fast charge pattern if so, opening low pressure charging paths.Technical solution of the present invention is capable of the adapter of compatible different charging schemes.
Description
Technical Field
The invention relates to the technical field of charging, in particular to a charging circuit, an intelligent terminal and a charging method thereof.
Background
With the increase of the capacity density of the battery, the supportable charging rate of the lithium battery is larger and larger, and the development of a quick charging technology is promoted. At present, the flash charging technology represented by a high-voltage quick charging scheme and a low-voltage direct charging scheme is widely applied to intelligent terminal equipment.
The high-voltage quick charging technology is used for improving the charging rate of the lithium battery by improving the input voltage on a USB line; the low-voltage direct charging technology is used for improving the charging rate of the lithium battery by reducing the input voltage on the USB line; therefore, the high-voltage quick charging adapter outputs the voltage with the higher voltage value, and the low-voltage direct charging adapter outputs the voltage with the lower voltage value. Because the low-voltage direct charging adapter cannot output high voltage, if the high-voltage direct charging adapter is connected, the high-voltage rapid charging failure of the mobile terminal equipment can be caused when the high-voltage charging implementation scheme is adopted. Similarly, when the low-voltage direct charging implementation scheme is adopted, because the high-voltage quick charging adapter cannot output low voltage, if the high-voltage quick charging adapter is connected, the low-voltage direct charging failure of the mobile terminal equipment can be caused.
Therefore, the prior art schemes are completely incompatible with adapters adopting different charging schemes, which causes charging inconvenience.
Disclosure of Invention
The invention mainly aims to provide a charging circuit, aiming at being compatible with adapters of different charging schemes.
In order to achieve the above object, the charging circuit provided by the present invention comprises a charging interface, a switching circuit, a high voltage charging branch, a low voltage charging branch and a control unit; wherein,
the charging interface is connected with the adapter and used for receiving input electric energy;
the high-voltage charging branch circuit detects whether the charging type of the adapter is a high-voltage charging type after the charging interface is powered on, and if so, the high-voltage charging branch circuit is started to charge the battery in a high-voltage quick charging mode;
if not, the control unit closes the high-voltage charging branch circuit through the switching circuit and opens the low-voltage charging branch circuit;
the low-voltage charging branch circuit detects whether the charging type of the adapter is a low-voltage charging type, and if so, the low-voltage charging branch circuit is started to charge the battery in a low-voltage quick charging mode.
Preferably, when the low-voltage charging branch detects that the charging type of the adapter is not the low-voltage charging type, the control unit closes the low-voltage charging control circuit through the switching circuit, opens the high-voltage charging branch, and charges the battery in a conventional charging mode.
Preferably, when the high-voltage charging branch detects that the adapter is connected to the charging interface, the control unit starts timing, and the high-voltage charging branch detects the charging type of the adapter;
when the timing reaches a first preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a high-voltage charging type, the high-voltage charging branch is started to charge the battery in a high-voltage quick charging mode;
if the detected charging type is unknown, the control unit closes the high-voltage charging branch circuit through the switching circuit, the control unit restarts timing, and the low-voltage charging branch circuit detects the charging type of the adapter;
when the timing reaches a second preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a low-voltage charging type, the low-voltage charging branch is started to charge the battery in a low-voltage quick charging mode;
and if the detected charging type is unknown, switching to a high-voltage charging branch to charge the battery in a conventional charging mode.
Preferably, when the timing reaches a second preset time threshold, if the detected charging type is unknown, the low-voltage charging branch is closed, the high-voltage charging branch is opened, and the control unit marks and stores the charging type value of the adapter;
resetting the charging interface;
and the high-voltage charging branch starts the charging type detection of the adapter again, reads the stored charging type value, and if the charging type value is matched with the preset value, the voltage charging control branch charges the battery in a conventional charging mode.
Preferably, the switching circuit is respectively connected with the charging interface, the high-voltage charging branch and the low-voltage charging branch; the high-voltage charging branch and the low-voltage charging branch are both connected with a battery, the high-voltage charging branch is connected with the control unit, and the control unit is respectively connected with the switching circuit and the low-voltage charging branch.
Preferably, the high-voltage charging branch comprises a high-voltage charging management chip and a control unit; the high-voltage charging management chip comprises a first data input end, a second data input end, a charging input end and a charging output end; the first data input end and the second data input end are both connected with the switching circuit, the charging input end is connected with the charging interface, and the charging output end is connected with a battery; the high-voltage charging management chip supplies power to the control unit and is in communication connection with the control unit.
Preferably, the low-voltage charging branch comprises a low-voltage charging management chip, a first MOS transistor, a second MOS transistor and a third MOS transistor; the low-voltage charging management chip comprises a first data input end, a second data input end, a driving end and a voltage detection end, wherein the first data input end and the second data input end are connected with the switching circuit, the driving end is connected with a gate electrode of the first MOS transistor, a source electrode of the first MOS transistor is grounded, and a drain electrode of the first MOS transistor is connected with a gate electrode of the second MOS transistor and a gate electrode of the third MOS transistor; the drain electrode of the second MOS tube is connected with the charging interface, the source electrode of the second MOS tube is connected with the source electrode of the third MOS tube, the drain electrode of the third MOS tube is connected with the battery, and the drain electrode of the first MOS tube is also connected with the source electrode of the second MOS tube and the source electrode of the third MOS tube.
Preferably, the charging interface is a USB interface.
The invention also provides an intelligent terminal which comprises the charging circuit.
The invention also provides a charging method, which comprises the following steps:
when the high-voltage charging branch detects that the adapter is connected to the charging interface, the control unit starts timing, and the high-voltage charging branch detects the charging type of the adapter;
when the timing reaches a first preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a high-voltage charging type, the high-voltage charging branch is started to charge the battery in a high-voltage quick charging mode;
if the detected charging type is unknown, the control unit closes the high-voltage charging branch circuit through the switching circuit, the control unit restarts timing, and the low-voltage charging branch circuit detects the charging type of the adapter;
when the timing reaches a second preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a low-voltage charging type, the low-voltage charging branch is started to charge the battery in a low-voltage quick charging mode;
and if the detected charging type is unknown, switching to a high-voltage charging branch to charge the battery in a conventional charging mode.
According to the technical scheme, the charging circuit is formed by arranging the charging interface, the switching circuit, the high-voltage charging branch, the low-voltage charging branch and the control unit. The switching circuit, the high-voltage charging branch circuit, the low-voltage charging branch circuit and the control unit jointly detect the charging type of the adapter, and the battery is charged in a high-voltage quick charging mode or a low-voltage quick charging mode according to the detected charging type, so that the adapter is compatible with different charging schemes, and charging is facilitated for a user.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a functional block diagram of a charging circuit according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a charging circuit according to an embodiment of the present invention;
fig. 3 is a flowchart of a charging method according to an embodiment of the invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Charging interface | U2 | High-voltage charging management chip |
| 200 | Switching circuit | U3 | Low-voltage charging management chip |
| 300 | High-voltage charging branch | Q1 | First MOS transistor |
| 400 | Low-voltage charging branch | Q2 | Second MOS transistor |
| 500 | Control unit | Q3 | Third MOS transistor |
| U1 | Electronic change-over switch | R | Resistance (RC) |
| VCC | Power supply |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
The invention provides a charging circuit.
Referring to fig. 1 and 2, in the embodiment of the present invention, the charging circuit includes a charging interface 100, a switching circuit 200, a high-voltage charging branch 300, a low-voltage charging branch 400, and a control unit 500.
The charging interface 100 is connected to the adapter, and receives input electric energy.
It should be noted that the charging circuit is applied to an intelligent terminal. The charging interface 100 is disposed on a housing of the smart terminal. The type of charging interface 100 matches the type of adapter connection interface.
The high-voltage charging branch 300 detects whether the charging type of the adapter is the high-voltage charging type after the charging interface 100 is powered on, and if so, the high-voltage charging branch 300 is started to charge the battery in a high-voltage quick charging mode.
If not, the control unit 500 turns off the high-voltage charging branch 300 through the switching circuit 200, and turns on the low-voltage charging branch 400.
The low-voltage charging branch 400 detects whether the charging type of the adapter is a low-voltage charging type, and if so, the low-voltage charging branch 400 is started to charge the battery in a low-voltage quick charging mode.
It should be noted that the high-voltage quick-charging scheme is a technology for increasing the charging rate of the lithium battery by increasing the input voltage on the charging interface 100 on the basis of the conventional charging technology. In this embodiment, the charging interface 100 adopts a USB interface, and the charging step in the high-voltage fast charging mode includes:
firstly, the VBUS input voltage of the USB interface is increased from 5V to 9V, 12V and the like;
then, after the VBUS input voltage passes through a USB interface of a chip of the mobile terminal equipment, the VBUS input voltage is input to a high-voltage charging management chip through a USB _ IN pin; the Buck circuit module in the high-voltage charging management chip performs voltage reduction on the input current;
and finally, outputting the current after voltage reduction to the battery from a VBAT pin of the high-voltage charging management chip to charge the battery.
The low-voltage direct charging scheme is a charging scheme that on the basis of conventional charging, the current input by the USB interface VBUS is directly connected to the VBAT pin of the battery without voltage reduction processing of a charging chip. In this scheme, the current input from VBUS lacks the step-down process of the charging chip, so the input voltage on VBUS has the following characteristics:
the input voltage on VBUS keeps a certain voltage difference (usually 300mV) with the voltage of a VBAT pin of the battery; the voltage difference can ensure that current can be input into the battery from the battery VBAT to charge the battery; meanwhile, the charging safety is kept; in the low-voltage direct charging process, along with the increase of the VBAT voltage of the battery, the VBUS voltage is correspondingly increased in order to keep the charging continuity.
According to the technical scheme, the charging circuit is formed by arranging the charging interface 100, the switching circuit 200, the high-voltage charging branch 300, the low-voltage charging branch 400 and the control unit 500. The switching circuit 200, the high-voltage charging branch 300, the low-voltage charging branch 400 and the control unit 500 jointly detect the charging type of the adapter, and the battery is charged in a high-voltage quick charging mode or a low-voltage quick charging mode according to the detected charging type, so that the adapter is compatible with different charging schemes, and charging is facilitated for a user.
Further, when the low-voltage charging branch 400 detects that the charging type of the adapter is not the low-voltage charging type, the control unit 500 turns off the low-voltage charging control circuit through the switching circuit 200, and turns on the high-voltage charging branch 300 to charge the battery in the conventional charging mode.
In this embodiment, the conventional charging is to directly charge the battery after the input voltage on VBUS is subjected to voltage reduction processing by the high-voltage charging management chip.
Further, when the high-voltage charging branch 300 detects that the adapter is connected to the charging interface 100, the control unit 500 starts timing, and the high-voltage charging branch 300 detects the charging type of the adapter;
when the timing reaches a first preset time threshold, the control unit 500 reads the charging type of the adapter, and if the detected charging type is a high-voltage charging type, the high-voltage charging branch 300 is started to charge the battery in a high-voltage quick charging mode;
if the detected charging type is unknown, the control unit 500 closes the high-voltage charging branch 300 through the switching circuit 200, the control unit 500 restarts timing, and the low-voltage charging branch 400 detects the charging type of the adapter;
when the timing reaches a second preset time threshold, the control unit 500 reads the charging type of the adapter, and if the detected charging type is a low-voltage charging type, the low-voltage charging branch 400 is started to charge the battery in a low-voltage quick charging mode;
if the detected charging type is unknown, the charging mode is switched to the high-voltage charging branch 300 to charge the battery in a conventional charging mode.
Specifically, the switching step includes, when the counted time reaches a second preset time threshold, if the detected charging type is unknown, closing the low-voltage charging branch 400, opening the high-voltage charging branch 300, and marking and storing the charging type value of the adapter by the control unit 500;
resetting the charging interface 100;
the high-voltage charging branch 300 starts the charging type detection of the adapter again, reads the stored charging type value, and if the charging type value is matched with the preset value, the voltage charging control branch charges the battery in a conventional charging mode.
In this embodiment, the switching circuit 200 is respectively connected to the charging interface 100, the high-voltage charging branch 300 and the low-voltage charging branch 400; the high-voltage charging branch 300 and the low-voltage charging branch 400 are both connected with a battery, the high-voltage charging branch 300 is connected with the control unit 500, and the control unit 500 is respectively connected with the switching circuit 200 and the low-voltage charging branch 400. Specifically, the high-voltage charging management chip U2 includes a first data input terminal DP, a second data input terminal DM, a charging input terminal USB-IN, and a charging output terminal VBAT; the first data input end DP and the second data input end DM are both connected to the switching circuit 200, the charging input end USB-IN is connected to the charging interface 100, and the charging output end VBAT is connected to a battery; the high-voltage charging management chip U2 supplies power to the control unit 500, and the high-voltage charging management chip U2 is also in communication connection with the control unit 500.
Specifically, the low-voltage charging branch 400 includes a low-voltage charging management chip U3, a first MOS transistor, a second MOS transistor, and a third MOS transistor; the low-voltage charging management chip U3 includes a first data input end DP, a second data input end DM, a driving end Driver and a voltage detection end USB-IN, the first data input end DP and the second data input end DM are both connected to the switching circuit 200, the driving end Driver is connected to the gate of the first MOS transistor, the source of the first MOS transistor is grounded, and the drain of the first MOS transistor is connected to the gate of the second MOS transistor and the gate of the third MOS transistor; the drain electrode of the second MOS tube is connected with the charging interface 100, the source electrode of the second MOS tube is connected with the source electrode of the third MOS tube, the drain electrode of the third MOS tube is connected with the battery, and the drain electrode of the first MOS tube is also connected with the source electrode of the second MOS tube and the source electrode of the third MOS tube.
The switching circuit is realized by adopting an electronic switch U1
In summary, with continued reference to fig. 2, the method for selecting the high-low voltage intelligent selection charging scheme is as follows:
1) when the VBUS pin of the USB interface is in a high level (indicating that the adapter is connected), starting a timeout timer T1 for detecting the high-voltage charging adapter;
the high voltage charging adapter detection has strict time-timeliness, that is: when the adapter is connected, the detection of the high-voltage adapter must be carried out immediately; the detection condition of the low-voltage charging adapter is that the detection of the low-voltage adapter is started after the En pin of the low-voltage charging management chip is enabled; therefore, a pull-up resistor R is externally connected to an SWT control pin of the electronic switch U1 to ensure that the SWT is in a high level under the default condition, so that the data output signal pins D1+ and D1-are in a conducting state;
when the adapter is in place, the high-voltage and low-voltage intelligent selection charging scheme immediately detects the high-voltage adapter through the data input signal pins DP and DM of the high-voltage charging management chip U3;
2) reading the type of the adapter after the timer T1 is overtime;
if the type of the high-voltage adapter is detected, the battery is charged directly by adopting a high-voltage quick-charging scheme;
if the state is an UNKNOWN state, the access adapter is indicated to be a non-high-voltage adapter; 1) in view of that the high-voltage charging management chip U2 automatically returns to the normal charging mode after failing to switch the high-voltage fast charging mode, the charging function of the high-voltage charging management chip U2 is firstly turned off; 2) outputting a low level through the GPIO _1 to enable the electronic switch SWT to be in a low level, namely D2+ and D2-are in a conducting state; 3) the software outputs high level through GPIO _2, pulls the En pin of the low-voltage charging management chip U2 high, and enables the low-voltage charging management chip U2; 4) starting a timeout timer T2;
3) after the timer T2 times out, the adapter type is read again;
if the low-voltage direct charging adapter is detected, the battery is charged by adopting a low-voltage direct charging scheme;
otherwise, the adapter is a conventional adapter, and the high-voltage charging management chip U2 is switched to a conventional charging mode to charge the battery;
the switching method comprises the steps of 1) pulling down GPIO _2, and closing the low-voltage charging management chip U3; 2) the GPIO _1 is pulled up, D1+ and D1-are conducted; 3) setting an adapter detection tag as TRUE; 4) VBUS is reset; 5) before the detection process of the low-voltage charging management chip U3 adapter is started again, the detection label value of the adapter is detected, and if the detection label value is TRUE, the detection process of the low-voltage charging management chip U3 adapter is not carried out. The normal charging mode is entered directly.
The present invention further provides an intelligent terminal, which includes a charging circuit, and the specific structure of the charging circuit refers to the above embodiments, and since the intelligent terminal adopts all the technical solutions of all the above embodiments, the intelligent terminal at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. The intelligent terminal can be a mobile phone, a tablet computer, a computer and the like.
Referring to fig. 3, based on the charging circuit, the present invention further provides a charging method, including:
s100, when the high-voltage charging branch 300 detects that the adapter is connected to the charging interface 100, the control unit 500 starts timing, and the high-voltage charging branch 300 detects the charging type of the adapter;
s200, when the timing reaches a first preset time threshold, the control unit 500 reads the charging type of the adapter, and if the charging type is detected to be a high-voltage charging type, the high-voltage charging branch 300 is started to charge the battery in a high-voltage quick charging mode;
s300, if the detected charging type is unknown, the control unit 500 closes the high-voltage charging branch 300 through the switching circuit 200, the control unit 500 restarts timing, and the low-voltage charging branch 400 detects the charging type of the adapter;
s400, when the timing reaches a second preset time threshold, the control unit 500 reads the charging type of the adapter, and if the charging type is detected to be a low-voltage charging type, the low-voltage charging branch 400 is started to charge the battery in a low-voltage quick charging mode;
and S500, if the detected charging type is unknown, switching to the high-voltage charging branch 300 to charge the battery in a conventional charging mode.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A charging circuit is characterized by comprising a charging interface, a switching circuit, a high-voltage charging branch, a low-voltage charging branch and a control unit; wherein,
the charging interface is connected with the adapter and used for receiving input electric energy;
the high-voltage charging branch circuit detects whether the charging type of the adapter is a high-voltage charging type after the charging interface is powered on, and if so, the high-voltage charging branch circuit is started to charge the battery in a high-voltage quick charging mode;
if not, the control unit closes the high-voltage charging branch circuit through the switching circuit and opens the low-voltage charging branch circuit;
the low-voltage charging branch circuit detects whether the charging type of the adapter is a low-voltage charging type, and if so, the low-voltage charging branch circuit is started to charge the battery in a low-voltage quick charging mode.
2. The charging circuit according to claim 1, wherein when the low-voltage charging branch detects that the charging type of the adapter is not the low-voltage charging type, the control unit turns off the low-voltage charging control circuit and turns on the high-voltage charging branch through the switching circuit to charge the battery in a normal charging mode.
3. The charging circuit of claim 1,
when the high-voltage charging branch detects that the adapter is connected to the charging interface, the control unit starts timing, and the high-voltage charging branch detects the charging type of the adapter;
when the timing reaches a first preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a high-voltage charging type, the high-voltage charging branch is started to charge the battery in a high-voltage quick charging mode;
if the detected charging type is unknown, the control unit closes the high-voltage charging branch circuit through the switching circuit, the control unit restarts timing, and the low-voltage charging branch circuit detects the charging type of the adapter;
when the timing reaches a second preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a low-voltage charging type, the low-voltage charging branch is started to charge the battery in a low-voltage quick charging mode;
and if the detected charging type is unknown, switching to a high-voltage charging branch to charge the battery in a conventional charging mode.
4. The charging circuit of claim 3,
when the timing reaches a second preset time threshold value, if the detected charging type is unknown, the low-voltage charging branch is closed, the high-voltage charging branch is opened, and the control unit marks and stores the charging type value of the adapter;
resetting the charging interface;
and the high-voltage charging branch starts the charging type detection of the adapter again, reads the stored charging type value, and if the charging type value is matched with the preset value, the high-voltage charging control branch charges the battery in a conventional charging mode.
5. The charging circuit according to claim 1, wherein the switching circuit is connected to the charging interface, the high-voltage charging branch and the low-voltage charging branch respectively; the high-voltage charging branch and the low-voltage charging branch are both connected with the charging interface; the high-voltage charging branch and the low-voltage charging branch are both connected with a battery, the high-voltage charging branch is connected with the control unit, and the control unit is respectively connected with the switching circuit and the low-voltage charging branch.
6. The charging circuit of claim 1, wherein the high voltage charge management chip comprises a first data input, a second data input, a charge input, and a charge output; the first data input end and the second data input end are both connected with the switching circuit, the charging input end is connected with the charging interface, and the charging output end is connected with a battery; the high-voltage charging management chip supplies power to the control unit and is in communication connection with the control unit.
7. The charging circuit according to claim 6, wherein the low-voltage charging branch comprises a low-voltage charging management chip, a first MOS transistor, a second MOS transistor and a third MOS transistor; the low-voltage charging management chip comprises a first data input end, a second data input end, a driving end and a voltage detection end, wherein the first data input end and the second data input end are connected with the switching circuit, the driving end is connected with a gate electrode of the first MOS transistor, a source electrode of the first MOS transistor is grounded, and a drain electrode of the first MOS transistor is connected with a gate electrode of the second MOS transistor and a gate electrode of the third MOS transistor; the drain electrode of the second MOS tube is connected with the charging interface, the source electrode of the second MOS tube is connected with the source electrode of the third MOS tube, the drain electrode of the third MOS tube is connected with the battery, and the drain electrode of the first MOS tube is also connected with the source electrode of the second MOS tube and the source electrode of the third MOS tube.
8. The charging circuit of claim 2, wherein the charging interface is a USB interface.
9. An intelligent terminal, characterized in that the intelligent terminal comprises a charging circuit according to any one of claims 1-8.
10. The intelligent terminal charging method according to claim 9, comprising:
when the high-voltage charging branch detects that the adapter is connected to the charging interface, the control unit starts timing, and the high-voltage charging branch detects the charging type of the adapter;
when the timing reaches a first preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a high-voltage charging type, the high-voltage charging branch is started to charge the battery in a high-voltage quick charging mode;
if the detected charging type is unknown, the control unit closes the high-voltage charging branch circuit through the switching circuit, the control unit restarts timing, and the low-voltage charging branch circuit detects the charging type of the adapter;
when the timing reaches a second preset time threshold, the control unit reads the charging type of the adapter, and if the detected charging type is a low-voltage charging type, the low-voltage charging branch is started to charge the battery in a low-voltage quick charging mode;
and if the detected charging type is unknown, switching to a high-voltage charging branch to charge the battery in a conventional charging mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039573.5A CN107742909A (en) | 2017-10-30 | 2017-10-30 | Charging circuit, intelligent terminal and its charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039573.5A CN107742909A (en) | 2017-10-30 | 2017-10-30 | Charging circuit, intelligent terminal and its charging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107742909A true CN107742909A (en) | 2018-02-27 |
Family
ID=61233646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711039573.5A Pending CN107742909A (en) | 2017-10-30 | 2017-10-30 | Charging circuit, intelligent terminal and its charging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107742909A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111245061A (en) * | 2020-03-10 | 2020-06-05 | 深圳市鼎泰富科技有限公司 | Charging circuit device capable of intelligently identifying single lithium battery and double lithium batteries |
| CN113224822A (en) * | 2021-05-26 | 2021-08-06 | 北京小米移动软件有限公司 | Charging control method and device and storage medium |
| CN114825495A (en) * | 2021-01-22 | 2022-07-29 | 北京小米移动软件有限公司 | Charging control method, charging control device, electronic equipment and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223575A1 (en) * | 2011-03-01 | 2012-09-06 | Omron Automotive Electronics Co., Ltd. | Power conversion apparatus and power control method |
| CN104037884A (en) * | 2014-06-28 | 2014-09-10 | 青岛歌尔声学科技有限公司 | Charging method and device integrating quick-charging rules and USB charging rules |
| CN104103868A (en) * | 2014-07-21 | 2014-10-15 | Tcl通讯（宁波）有限公司 | Charging method and system for charger of mobile terminal |
| CN104796011A (en) * | 2014-01-21 | 2015-07-22 | 中兴通讯股份有限公司 | Charging method, AC adapter, charging managing device and terminal |
| CN105098900A (en) * | 2015-08-05 | 2015-11-25 | 青岛海信移动通信技术股份有限公司 | Mobile terminal, direct charging power adapter and charging method |
| CN105553001A (en) * | 2015-12-23 | 2016-05-04 | 深圳市万普拉斯科技有限公司 | Charging method and intelligent terminal |
| CN105826962A (en) * | 2015-07-23 | 2016-08-03 | 维沃移动通信有限公司 | Power control method and device in charging process |
| CN106253400A (en) * | 2016-08-25 | 2016-12-21 | 维沃移动通信有限公司 | A kind of charging method, mobile terminal and charger |
| CN106786838A (en) * | 2016-11-11 | 2017-05-31 | 深圳天珑无线科技有限公司 | Charging system and method |
| CN207612080U (en) * | 2017-10-30 | 2018-07-13 | 深圳依偎控股有限公司 | Charging circuit and intelligent terminal |
-
2017
- 2017-10-30 CN CN201711039573.5A patent/CN107742909A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223575A1 (en) * | 2011-03-01 | 2012-09-06 | Omron Automotive Electronics Co., Ltd. | Power conversion apparatus and power control method |
| CN104796011A (en) * | 2014-01-21 | 2015-07-22 | 中兴通讯股份有限公司 | Charging method, AC adapter, charging managing device and terminal |
| CN104037884A (en) * | 2014-06-28 | 2014-09-10 | 青岛歌尔声学科技有限公司 | Charging method and device integrating quick-charging rules and USB charging rules |
| CN104103868A (en) * | 2014-07-21 | 2014-10-15 | Tcl通讯（宁波）有限公司 | Charging method and system for charger of mobile terminal |
| CN105826962A (en) * | 2015-07-23 | 2016-08-03 | 维沃移动通信有限公司 | Power control method and device in charging process |
| CN105098900A (en) * | 2015-08-05 | 2015-11-25 | 青岛海信移动通信技术股份有限公司 | Mobile terminal, direct charging power adapter and charging method |
| CN105553001A (en) * | 2015-12-23 | 2016-05-04 | 深圳市万普拉斯科技有限公司 | Charging method and intelligent terminal |
| CN106253400A (en) * | 2016-08-25 | 2016-12-21 | 维沃移动通信有限公司 | A kind of charging method, mobile terminal and charger |
| CN106786838A (en) * | 2016-11-11 | 2017-05-31 | 深圳天珑无线科技有限公司 | Charging system and method |
| CN207612080U (en) * | 2017-10-30 | 2018-07-13 | 深圳依偎控股有限公司 | Charging circuit and intelligent terminal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111245061A (en) * | 2020-03-10 | 2020-06-05 | 深圳市鼎泰富科技有限公司 | Charging circuit device capable of intelligently identifying single lithium battery and double lithium batteries |
| CN111245061B (en) * | 2020-03-10 | 2024-04-05 | 深圳市鼎泰富科技有限公司 | Charging circuit device for intelligently identifying single lithium battery and double lithium batteries |
| CN114825495A (en) * | 2021-01-22 | 2022-07-29 | 北京小米移动软件有限公司 | Charging control method, charging control device, electronic equipment and storage medium |
| CN113224822A (en) * | 2021-05-26 | 2021-08-06 | 北京小米移动软件有限公司 | Charging control method and device and storage medium |
| CN113224822B (en) * | 2021-05-26 | 2024-04-26 | 北京小米移动软件有限公司 | Charging control method, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9483093B2 (en) | Electronic device and method for controlling a setting of a maximum consumption current | |
| US8648573B2 (en) | Charger and portable device having the same | |
| US9627899B2 (en) | Mobile terminal and interface method thereof | |
| US20110314201A1 (en) | Method and device for identifying universal serial bus (usb) insertion or charger insertion of mobile terminal | |
| CN103024195B (en) | Smart mobile terminal and implementation method of charging of smart mobile terminal | |
| CN101989749B (en) | Charging device and charging method | |
| CN107332208B (en) | A kind of protection circuit, mainboard guard method and terminal | |
| CN102694400B (en) | Imput output circuit | |
| CN107742909A (en) | Charging circuit, intelligent terminal and its charging method | |
| WO2011088672A1 (en) | Intelligent charging method and device for terminal | |
| JP2016531368A (en) | Apparatus and method for changing current limit value | |
| CN111313515A (en) | Multi-output-port fast charging switching circuit and method | |
| WO2018232785A1 (en) | Management circuit for multi-battery power source, and virtual reality head-mounted device | |
| CN107658920B (en) | OTG is realized based on external charging and the difunctional system that charges | |
| CN109413532A (en) | A kind of charging bluetooth earphone circuit and bluetooth headset | |
| CN208571664U (en) | A kind of charge control system of built-in terminal | |
| CN115237235B (en) | USB equipment shift-out identification circuit and method and power supply system | |
| CN106706998B (en) | Terminal test system and terminal test method | |
| CN207612080U (en) | Charging circuit and intelligent terminal | |
| CN205863955U (en) | A kind of USB fast charging device of main frame front interface | |
| US20130103878A1 (en) | Universal usb charger | |
| CN111537915A (en) | Broken string detection circuitry and treasured that charges of polymorphic type charging wire | |
| CN104182020A (en) | Single-port-based device and method for realizing bi-directional power supply | |
| CN208656444U (en) | Wireless headset charging box with mobile phone charging function | |
| CN106066438B (en) | A kind of method and system of the mobile terminal based on OTG detection device charged state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180227 |
|
| WD01 | Invention patent application deemed withdrawn after publication |