U.S. patent application number 17/135554 was filed with the patent office on 2021-04-22 for charging circuit and mobile terminal.
The applicant listed for this patent is GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.. Invention is credited to Jialiang Zhang.
Application Number | 20210119463 17/135554 |
Document ID | / |
Family ID | 1000005311364 |
Filed Date | 2021-04-22 |
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United States Patent
Application |
20210119463 |
Kind Code |
A1 |
Zhang; Jialiang |
April 22, 2021 |
Charging Circuit and Mobile Terminal
Abstract
It is provided a charging circuit and a mobile terminal. The
charging circuit is configured to electrically couple a charging
interface and a battery of a terminal, and includes a first
circuit, a magnetic coupling element, and a second circuit
connected in series. The mobile terminal supports a normal charging
mode and a fast charging mode.
Inventors: |
Zhang; Jialiang; (Dongguan,
CN) |
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Applicant: |
Name |
City |
State |
Country |
Type |
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. |
Dongguan |
|
CN |
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|
Family ID: |
1000005311364 |
Appl. No.: |
17/135554 |
Filed: |
December 28, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15371451 |
Dec 7, 2016 |
10938228 |
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17135554 |
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PCT/CN2015/080490 |
Jun 1, 2015 |
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15371451 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H02J 7/0068 20130101;
H02M 3/33523 20130101; H02J 7/00 20130101; H02M 3/3376 20130101;
H02M 3/33576 20130101 |
International
Class: |
H02J 7/00 20060101
H02J007/00; H02M 3/335 20060101 H02M003/335; H02M 3/337 20060101
H02M003/337 |
Claims
1. A charging circuit, configured to electrically couple a charging
interface of a mobile terminal and a battery of the mobile
terminal, the charging circuit comprising a first circuit, a
magnetic coupling element, and a second circuit connected in
series, wherein the mobile terminal supports a normal charging mode
and a fast charging mode, and charging current is larger in the
fast charging mode than in the normal charging mode; the first
circuit is configured to receive a first current from the charging
interface and convert the first current to a second current with at
least one of a changed magnitude and a changed direction; the
magnetic coupling element comprises a first coil and a second coil,
the first coil connecting with the first circuit, the second coil
connecting with the second circuit, the first coil and the second
coil separated from each other to disconnect a direct-current (DC)
path of the charging circuit; the magnetic coupling element is
configured to transfer energy from the first coil to the second
coil in an electromagnetic induction manner by utilizing the second
current with the at least one of the changed magnitude and the
changed direction to generate a third current; and the second
circuit is configured to adjust the third current to a fourth
current suitable for battery charging to charge the battery.
2. The charging circuit of claim 1, wherein the first circuit
comprises a half-bridge circuit and a control circuit controlling
the half-bridge circuit, and the half-bridge circuit comprises a
first switch transistor and a second switch transistor, wherein the
first switch transistor has a first end configured to connect with
the charging interface, a second end connected with a first end of
the first coil, and a control end connected with the control
circuit; the second switch transistor has a first end connected
with the second end of the first switch transistor, a second end
configured to connect to ground, and a control end connected with
the control circuit; and the first coil has a second end configured
to connect to ground.
3. The charging circuit of claim 1, wherein the first circuit
comprises a full-bridge circuit and a control circuit controlling
the full-bridge circuit, and the full-bridge circuit comprises a
first switch transistor, a second switch transistor, a third switch
transistor, and a fourth switch transistor, wherein the first
switch transistor has a first end configured to connect with the
charging interface, a second end connected with a second end of the
first coil, and a control end connected with the control circuit;
the second switch transistor has a first end connected with the
second end of the first switch transistor, a second end configured
to connect to ground, and a control end connected with the control
circuit; the third switch transistor has a first end configured to
connect with the charging interface, a second end connected with a
first end of the first coil, and a control end connected with the
control circuit; and the fourth switch transistor has a first end
connected with the second end of the third switch transistor, a
second end configured to connect to ground, and a control end
connected with the control circuit.
4. The charging circuit of claim 1, wherein the first circuit
comprises a switch transistor and a control circuit controlling the
switch transistor; the switch transistor has a first end configured
to connect with the charging interface, a second end connected with
a first end of the first coil, and a control end connected with the
control circuit; and the first coil has a second end configured to
connect to ground.
5. The charging circuit of claim 4, wherein the switch transistor
in the first circuit is metal oxide semiconductor field effect
transistor (MOSFET).
6. The charging circuit of claim 1, wherein the second circuit
comprises a rectifier circuit and a filter circuit.
7. The charging circuit of claim 1, wherein the first circuit
comprises at least one transistor having an on-resistance, wherein
the on-resistance has a first value when a voltage resistance of
the at least one transistor is increased, wherein the on-resistance
has a second value when the voltage resistance of the at least one
transistor is not increased, wherein the second value is less than
the first value.
8. A mobile terminal comprising a charging interface, a battery,
and a charging circuit arranged between the charging interface and
the battery, wherein the mobile terminal supports a normal charging
mode and a fast charging mode, and charging current is larger in
the fast charging mode than in the normal charging mode; the
charging circuit comprises a first circuit, a magnetic coupling
element, and a second circuit connected in series successively
between the charging interface and the battery; the first circuit
is configured to receive a first current from the charging
interface and convert the first current to a second current with at
least one of a changed magnitude and a changed direction; the
magnetic coupling element comprises a first coil and a second coil,
the first coil connecting with the first circuit, the second coil
connecting with the second circuit, the first coil and the second
coil separated from each other to disconnect a direct-current (DC)
path of the charging circuit; the magnetic coupling element is
configured to transfer energy from the first coil to the second
coil in an electromagnetic induction manner by utilizing the second
current with the at least one of the changed magnitude and the
changed direction to generate a third current; and the second
circuit is configured to adjust the third current to a fourth
current suitable for battery charging to charge the battery.
9. The mobile terminal of claim 8, wherein the first circuit
comprises a half-bridge circuit and a control circuit controlling
the half-bridge circuit, and the half-bridge circuit comprises a
first switch transistor and a second switch transistor, wherein the
first switch transistor has a first end connected with the charging
interface, a second end connected with a first end of the first
coil, and a control end connected with the control circuit; the
second switch transistor has a first end connected with the second
end of the first switch transistor, a second end configured to
connect to ground, and a control end connected with the control
circuit; and the first coil has a second end configured to connect
to ground.
10. The mobile terminal of claim 8, wherein the first circuit
comprises a full-bridge circuit and a control circuit controlling
the full-bridge circuit, and the full-bridge circuit comprises a
first switch transistor, a second switch transistor, a third switch
transistor, and a fourth switch transistor, wherein the first
switch transistor has a first end connected with the charging
interface, a second end connected with a second end of the first
coil, and a control end connected with the control circuit; the
second switch transistor has a first end connected with the second
end of the first switch transistor, a second end configured to
connect to ground, and a control end connected with the control
circuit; the third switch transistor has a first end connected with
the charging interface, a second end connected with a first end of
the first coil, and a control end connected with the control
circuit; and the fourth switch transistor has a first end connected
with the second end of the third switch transistor, a second end
configured to connect to ground, and a control end connected with
the control circuit.
11. The mobile terminal of claim 8, wherein the first circuit
comprises a switch transistor and a control circuit controlling the
switch transistor; the switch transistor has a first end connected
with the charging interface, a second end connected with a first
end of the first coil, and a control end connected with the control
circuit; and the first coil has a second end configured to connect
to ground.
12. The mobile terminal of claim 8, wherein the charging interface
is a universal serial bus (USB) interface.
13. The mobile terminal of claim 8, wherein the battery is a
lithium battery.
14. The mobile terminal of claim 8, wherein the first circuit
comprises at least one transistor having an on-resistance, wherein
the on-resistance has a first value when a voltage resistance of
the at least one transistor is increased, wherein the on-resistance
has a second value when the voltage resistance of the at least one
transistor is not increased, wherein the second value is less than
the first value.
15. A charging circuit comprising a first circuit, a magnetic
coupling element, and a second circuit connected in series between
a charging interface of a mobile terminal and a battery of the
mobile terminal, the magnetic coupling element comprising a first
coil and a second coil, the first coil connecting with the first
circuit, the second coil connecting with the second circuit, the
first coil and the second coil being separated from each other to
disconnect a direct-current (DC) path of the charging circuit,
wherein the mobile terminal supports a normal charging mode and a
fast charging mode, and charging current is larger in the fast
charging mode than in the normal charging mode.
16. The charging circuit of claim 15, wherein the first circuit
comprises a half-bridge circuit and a control circuit controlling
the half-bridge circuit, and the half-bridge circuit comprises a
first switch transistor and a second switch transistor, wherein the
first switch transistor has a first end configured to connect with
the charging interface, a second end connected with a first end of
the first coil, and a control end connected with the control
circuit; the second switch transistor has a first end connected
with the second end of the first switch transistor, a second end
configured to connect to ground, and a control end connected with
the control circuit; and the first coil has a second end configured
to connect to ground.
17. The charging circuit of claim 15, wherein the first circuit
comprises a full-bridge circuit and a control circuit controlling
the full-bridge circuit, and the full-bridge circuit comprises a
first switch transistor, a second switch transistor, a third switch
transistor, and a fourth switch transistor, wherein the first
switch transistor has a first end configured to connect with the
charging interface, a second end connected with a second end of the
first coil, and a control end connected with the control circuit;
the second switch transistor has a first end connected with the
second end of the first switch transistor, a second end configured
to connect to ground, and a control end connected with the control
circuit; the third switch transistor has a first end configured to
connect with the charging interface, a second end connected with a
first end of the first coil, and a control end connected with the
control circuit; and the fourth switch transistor has a first end
connected with the second end of the third switch transistor, a
second end configured to connect to ground, and a control end
connected with the control circuit.
18. The charging circuit of claim 15, wherein the first circuit
comprises a switch transistor and a control circuit controlling the
switch transistor; the switch transistor has a first end configured
to connect with the charging interface, a second end connected with
a first end of the first coil, and a control end connected with the
control circuit; and the first coil has a second end configured to
connect to ground.
19. The charging circuit of claim 18, wherein the switch transistor
in the first circuit is metal oxide semiconductor field effect
transistor (MOSFET).
20. The charging circuit of claim 15, wherein the first circuit
comprises at least one transistor having an on-resistance, wherein
the on-resistance has a first value when a voltage resistance of
the at least one transistor is increased, wherein the on-resistance
has a second value when the voltage resistance of the at least one
transistor is not increased, wherein the second value is less than
the first value.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of U.S. patent
application Ser. No. 15/371,451, filed on Dec. 7, 2016, which is a
continuation of International Application No. PCT/CN2015/080490,
filed on Jun. 1, 2015, the entire disclosures of both of which are
herein incorporated by reference.
TECHNICAL FIELD
[0002] The present disclosure relates to mobile terminal field, and
particularly to a charging circuit and a mobile terminal.
BACKGROUND
[0003] With the growing popularity of mobile terminal use, terminal
charging has become a focused issue of mobile terminal
providers.
SUMMARY
[0004] Disclosed herein are implementations of a charging circuit,
configured to electrically couple a charging interface and a
battery, comprising a first circuit, a magnetic coupling element,
and a second circuit connected in series, wherein the first circuit
is configured to receive a first current from the charging
interface and convert the first current to a second current with at
least one of a changed magnitude and a changed direction, the
magnetic coupling element comprises a first coil and a second coil,
the first coil connecting with the first circuit, the second coil
connecting with the second circuit, the first coil and the second
coil separated from each other to disconnect a direct-current (DC)
path of the charging circuit, the magnetic coupling element is
configured to transfer energy from the first coil to the second
coil in an electromagnetic induction manner by utilizing the second
current with the at least one of the changed magnitude and the
changed direction to generate a third current, and the second
circuit is configured to adjust the third current to a fourth
current suitable for battery charging to charge the battery.
[0005] Disclosed herein are also implementations of a mobile
terminal, comprising a charging interface, a battery, and a
charging circuit arranged between the charging interface and the
battery, wherein the charging circuit comprises a first circuit, a
magnetic coupling element, and a second circuit connected in series
successively between the charging interface and the battery, the
first circuit is configured to receive a first current from the
charging interface and convert the first current to a second
current with at least one of a changed magnitude and a changed
direction, the magnetic coupling element comprises a first coil and
a second coil, the first coil connecting with the first circuit,
the second coil connecting with the second circuit, the first coil
and the second coil separated from each other to disconnect a
direct-current (DC) path of the charging circuit, the magnetic
coupling element is configured to transfer energy from the first
coil to the second coil in an electromagnetic induction manner by
utilizing the second current with the at least one of the changed
magnitude and the changed direction to generate a third current,
and the second circuit is configured to adjust the third current to
a fourth current suitable for battery charging to charge the
battery.
[0006] Disclosed herein are also implementations of a charging
circuit, comprising a first circuit, a magnetic coupling element,
and a second circuit connected in series, the magnetic coupling
element comprising a first coil and a second coil, the first coil
connecting with the first circuit, the second coil connecting with
the second circuit, the first coil and the second coil being
separated from each other to disconnect a direct-current (DC) path
of the charging circuit.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] In order to illustrate the technical solutions of the
present disclosure or the related art more clearly, a brief
description of the accompanying drawings used herein is given
below. Obviously, the drawings listed below are only examples, and
a person skilled in the art should be noted that, other drawings
can also be obtained on the basis of these exemplary drawings
without creative work.
[0008] FIG. 1 is a circuit diagram illustrating a charging
circuit.
[0009] FIG. 2 is a block schematic diagram illustrating a charging
circuit according to an implementation of the present
disclosure.
[0010] FIG. 3 is a circuit diagram illustrating a charging circuit
according to an example of the present disclosure.
[0011] FIG. 4 is a circuit diagram illustrating a charging circuit
according to an example of the present disclosure.
[0012] FIG. 5 is a circuit diagram illustrating a charging circuit
according to an example of the present disclosure.
[0013] FIG. 6 is a block schematic diagram illustrating a mobile
terminal according to an implementation of the present
disclosure.
DETAILED DESCRIPTION
[0014] FIG. 1 is a circuit diagram illustrating a charging circuit
used in a mobile terminal. This charging circuit is known as BUCK
circuit, which includes a MOS transistor, a control circuit, a
diode, an inductor, and a battery. Upon charging, the control
circuit controls the MOS transistor to turn-on/turn-off to generate
a changing square wave current. The square wave current flows to
the inductor from the MOS transistor, and then flows to the battery
after voltage stabilization conducted by the inductor.
[0015] The above mentioned charging process has a risk of MOS
transistor breakdown. Upon MOS transistor breakdown, the current
will flow through the inductor, a current/voltage detecting
circuit, and the battery directly; this will cause the battery to
exceed a limit voltage and may even lead to more serious
consequences.
[0016] The cause of the damage to the MOS transistor can be as
follows.
[0017] The MOS transistor is mis-energized; the voltage at both
ends of the MOS transistor exceeds a maximum voltage that can be
withstood; electrostatic breakdown or surge.
[0018] The MOS transistor is of poor quality; or, there is an
integrated manufacture technology issue.
[0019] There can be other defects.
[0020] In order to avoid the above problems and improve the
reliability of the MOS transistor, the value of on-resistance
(RDSON) of the MOS transistor has been increased so as to improve
the voltage resistance of the MOS transistor. On the other hand,
high resistance, in turn, would cause the charging circuit to be
easy to heat, low energy transmission efficiency and so on.
[0021] Technical solutions of the implementations of the present
disclosure will be described clearly and completely taken in
conjunction with the accompanying drawings; it will be apparent to
one of ordinary skill in the art that, the implementations
described below are merely a part of the disclosure and other
implementations obtained out of them without creative work will
fall into the protection range of the present disclosure
either.
Implementation 1
[0022] According to implementation 1 of the present disclosure, it
provides a charging circuit. In the following, the components of
the charging circuit will be described in detail. A person skilled
in the art will be able to arrange or assemble the charging circuit
in accordance teaching of the description by using routine methods
of experimentation or analysis without undue efforts. Any method
used to assemble the charging circuit of the present disclosure
will fall into the protection scope defined by the appending
claims.
[0023] FIG. 2 is block schematic diagram illustrating the charging
circuit. As shown in FIG. 2, a charging circuit 30 is arranged
between a charging interface 10 and a battery 20 of a terminal for
electrically coupling the charging interface 10 and the battery 20.
The charging circuit 30 includes a first circuit 31, a magnetic
coupling element 33, and a second circuit 32 connected in series
successively between the charging interface 10 and the battery 20.
The magnetic coupling element 33 includes a first coil 331 and a
second coil 332. The first coil 331 connects with the first circuit
31, and the second coil 332 connects with the second circuit 32,
the first coil 331 and the second coil 332 separated apart from
each other so as to disconnect a direct-current (DC) path of the
charging circuit 30.
[0024] Configurations and operations of the components of the
charging circuit will be described in detail below.
[0025] The first circuit 31 is configured to receive a first
current from the charging interface 10 and convert the first
current to a second current with changed magnitude and/or
direction.
[0026] The magnetic coupling element 33 is configured to transfer
energy from the first coil 331 to the second coil 332 in an
electromagnetic induction manner by utilizing the second current
with changed magnitude and/or direction, so as to generate a third
current (in other words, the third current is generated at the
second coil 332 and is output to the second circuit 32).
[0027] The second circuit 32 is configured to adjust alternating
current (AC), which is coupled to the second circuit 32 by the
first circuit 31 through the magnetic coupling element 33, to DC
which is suitable for battery charging.
[0028] In this technical scheme, a DC path of the charging circuit
is separated by the magnetic coupling element. That is to say,
there is no DC path in the charging circuit. DC current from the
charging interface would not be output directly to the second
circuit and the battery upon failure of the first circuit, whereby
reliability of the charging circuit is improved.
Example 1
[0029] FIG. 3 is a circuit diagram illustrating a charging circuit
according to Example 1. As shown in FIG. 3, the first circuit 31
includes a half-bridge circuit 312 and a control circuit 311
controlling the half-bridge circuit. With the aid of the
half-bridge circuit 312, efficiency of the whole circuit can be
improved.
[0030] The half-bridge circuit 312 includes a first switch
transistor T1 and a second switch transistor T2. A first end of the
first switch transistor T1 connects with the charging interface 10,
a second end of the first switch transistor T1 connects with a
first end of the first coil 331, and a control end of the first
switch transistor T1 connects with the control circuit 311. A first
end of the second switch transistor T2 connects with the second end
of the first switch transistor T1, a second end of the second
switch transistor T2 connects to ground, and a control end of the
second switch transistor T2 connects to the control circuit 311. A
second end of the first coil 331 connects to ground. Furthermore,
two ends of the second coil 332 can connect with the second circuit
32 and ground respectively. Besides, the second circuit 32 can be
grounded.
[0031] Typically, a switch transistor (such as a MOS transistor),
which is easy breakdown, is arranged within the first circuit. When
breakdown of the switch transistor occurs, the first circuit could
not convert DC to AC via the switch transistor; this cause DC input
at the charging interface being applied to a subsequent component
of the charging interface or a battery directly. However, in this
example, with the aid of the magnetic coupling element arranged
between the first circuit and the second circuit, a DC path of the
charging circuit can be disconnected. That is to say, DC input at
the charging interface cannot flow to the second circuit or the
battery even if the switch transistor in the first circuit is broke
down or failure, whereby the reliability of the charging circuit of
the mobile terminal can be improved.
[0032] In addition, the magnetic coupling element has good
isolation performance. Thus, instead of increasing the
on-resistance so as to increase the voltage resistance of the MOS
transistor and then improve the reliability of the circuit like in
the prior art, in implementations of the present disclosure, a
lower on-resistance of the switch transistor in the first circuit
is allowed, and this will improve the energy transfer efficiency of
the whole charging circuit while reducing heating and loss.
Example 2
[0033] FIG. 4 is a circuit diagram illustrating a charging circuit
according to Example 2. As shown in FIG. 4, the first circuit 31
includes a full-bridge circuit 313 and a control circuit 311
controlling the full-bridge circuit. A difference between example 1
and example 2 is that, in example 2, the full-bridge circuit 313 is
used to replace the half-bridge circuit 312 in example 1. With the
aid of the full-bridge circuit 313, efficiency of the whole circuit
can be further improved.
[0034] The full-bridge circuit 313 includes a first switch
transistor T1, a second switch transistor T2, a third switch
transistor T3, and a fourth switch transistor T4. A first end of
the first switch transistor T1 connects with the charging interface
10, a second end of the first switch transistor T1 connects with a
second end of the first coil 331, and a control end of the first
switch transistor T1 connects with the control circuit 311. A first
end of the second switch transistor T2 connects with the second end
of the first switch transistor T1, a second end of the second
switch transistor T2 connects to ground, and a control end of the
second switch transistor T2 connects with the control circuit 311.
A first end of the third switch transistor T3 connects with the
charging interface 10, a second end of the third switch transistor
T3 connects with the first end of the first coil 331, and a control
end of the third switch transistor T3 connects with the control
circuit 311. A first end of the fourth switch transistor T4
connects with the second end of the third switch transistor T3, a
second end of the fourth switch transistor T4 connects to ground,
and a control end of the fourth switch transistor T4 connects with
the control circuit 311. In addition, two ends of the second coil
332 can connect with the second circuit 32, and the second circuit
can be grounded.
[0035] A switch transistor (such as a MOS transistor), which is
easy breakdown, is arranged within the first circuit. When
breakdown of the switch transistor occurs, the first circuit could
not convert DC to AC via the switch transistor; this cause DC input
at the charging interface being applied to a subsequent component
of the charging interface or a battery directly. However, in this
example, with the aid of the magnetic coupling element arranged
between the first circuit and the second circuit, a DC path of the
charging circuit can be disconnected. That is to say, DC input at
the charging interface cannot flow to the second circuit or the
battery even if the switch transistor in the first circuit is broke
down or failure, whereby the reliability of the charging circuit of
the mobile terminal can be improved.
[0036] In addition, the magnetic coupling element has good
isolation performance. Thus, instead of increasing the
on-resistance so as to increase the voltage resistance of the MOS
transistor and then improve the reliability of the circuit like in
the prior art, in implementations of the present disclosure, a
lower on-resistance of the switch transistor in the first circuit
is allowed, and this will improve the energy transfer efficiency of
the whole charging circuit while reducing heating and loss.
Example 3
[0037] FIG. 5 is a circuit diagram illustrating a charging circuit
according to Example 3. As shown in FIG. 5, the first circuit 31
includes a switch transistor 317 and a control circuit 311
controlling the switch transistor. A difference between example 3
and example 1-2 is that, in example 3, a switch transistor is used
to replace the half-bridge circuit/full bridge circuit, whereby the
cost of the circuit can be reduced.
[0038] A first end of the switch transistor 317 connects with the
charging interface 10, a second end of the switch transistor 317
connects with a first end of the first coil 331, and a control end
of the switch transistor 317 connects with the control circuit 311.
A second end of the first coil 331 connects to ground.
[0039] In short, as can be seen from the above description,
technical schemes of the implementations of the present disclosure
can improve the reliability of the charging circuit through a minor
modification to the related art.
[0040] The switch transistor in the first circuit referred to
herein includes multiple metal oxide semiconductor field effect
transistors (MOSFET).
[0041] As an implementation, the second circuit 32 referred to
herein can include a rectifier circuit 321 and a filter circuit
322.
Implementation 2
[0042] According to Implementation 2 of the present disclosure, it
is provided a mobile terminal. FIG. 6 is a block schematic diagram
illustrating the mobile terminal. As shown in FIG. 6, a mobile
terminal 60 includes a charging interface 61, a battery 62, and a
charging circuit 63. The charging circuit 63 can adopt any of the
implementations of the charging circuit 30 described above.
[0043] For details of the charging circuit 63, please refer to the
charging circuit 30 described above with refer to FIG. 2-FIG. 5,
and it will not be described here again in order to avoid
redundancy.
[0044] In the technical scheme described above, a DC path of the
charging circuit is separated by the magnetic coupling element.
That is to say, there is no DC path in the charging circuit. DC
current from the charging interface would not be output directly to
the second circuit and the battery upon failure of the first
circuit, whereby reliability of the charging circuit is
improved.
[0045] As an implementation, the charging interface 51 is a
universal serial bus (USB) interface or any other interface
corresponds to related industry standards of terminal charging
interface.
[0046] As an implementation, the battery 20 is lithium battery.
[0047] As an implementation, the mobile terminal 50 supports a
normal charging mode and a fast charging mode, wherein charging
current is larger in the fast charging mode than in the normal
charging mode.
[0048] It should be understood that the phenomenon of MOS
transistor breakdown is particularly serious in the mobile terminal
which supports fast charging. As to the problem of circuit
unreliability upon fast charging caused by MOS transistor
breakdown, the mobile terminal according to the implementation of
the present disclosure can be a good solution.
[0049] A person skilled in the art will understand, exemplary units
or algorithm steps described in any of the implementations can be
achieved via electronic hardware or a combination of electronic
hardware and computer software. Whether hardware or software should
be adopted depends on design constraints and specific applications
of the technical schemes. Respective specific application can use
different methods or manners to achieve the function described in
the implementations, which will fall into the protection scope of
the present disclosure.
[0050] Specific operations of the device, system, and the unit or
module can cross-refer to corresponding descriptions according to
the implementation, and will not go into much detail here.
[0051] In the implementations of the present disclosure, the device
and system described herein can be achieved in other manners. The
configuration of the device according to the implementation
described above is only exemplary; the division of units in the
device is a kind of division according to logical function,
therefore there can be other divisions in practice. For example,
multiple units or components can be combined or integrated into
another system; or, some features can be ignored while some units
need not to be executed. On the other hand, various function units
can be integrated into one processing unit; two or more than two
units can be integrated into one unit; or, each unit is physically
separate.
[0052] Furthermore, various function units can be integrated into
one processing unit; two or more than two units can be integrated
into one unit; or, each unit is physically separate.
[0053] Operations or functions of technical schemes according to
the implementations of the present disclosure, when achieved in the
form of software functional units and sold or used as an
independent product, can be stored in a computer readable storage
medium. According to this, all or a part of the technical schemes
of the present disclosure can be realized in the form of software
products which can be stored in a storage medium. The storage
medium includes USB disk, Read Only Memory (ROM), Random Access
Memory (RAM), magnetic disk, CD, and any other medium that can be
configured to store computer-readable program code or instructions.
The computer-readable program code, when executed on a
data-processing apparatus (can be personal computer, server, or
network equipment), adapted to perform all or a part of the methods
described in the above-mentioned implementations.
[0054] The foregoing descriptions are merely preferred
implementations of the present disclosure, rather than limiting the
present disclosure. Various modifications and alterations may be
made to the present disclosure for those skilled in the art. Any
modification, equivalent substitution, improvement or the like made
within the spirit and principle of the present disclosure shall
fall into the protection scope of the present disclosure.
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