CN105322597B - A kind of charging circuit and mobile terminal - Google Patents
A kind of charging circuit and mobile terminal Download PDFInfo
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- CN105322597B CN105322597B CN201510137972.XA CN201510137972A CN105322597B CN 105322597 B CN105322597 B CN 105322597B CN 201510137972 A CN201510137972 A CN 201510137972A CN 105322597 B CN105322597 B CN 105322597B
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Abstract
The present invention relates to electronic technology fields, provide a kind of charging circuit, including charging control circuit, the charging circuit further includes at least two charge integrated circuit IC, the at least two chargings IC is connected in parallel, its common output end is connect with battery charging input end, and the charging control circuit charges for controlling at least two charging IC for battery.The present invention also provides a kind of mobile terminals, have used above-mentioned charging circuit.The present invention charging circuit and mobile terminal can while realizing large current charge effective control cost.
Description
Technical field
The present invention relates to electronic technology field more particularly to a kind of charging circuits and mobile terminal.
Background technology
As the capacity of the battery of existing mobile terminal is increasing, the charging time of battery is also increasingly longer, in order to
Shorten the charging time of mobile terminal, generally use supports charging IC (Integrated Circuit, the integrated electricity of high current
Road) it charges the battery, however, supporting the charging IC process requirements of high current higher, keeps its cost high, improve movement
The production cost of terminal manufacturer.
Simultaneously as existing mobile terminal charges IC to battery charging by monolithic, the electric current for flowing through charging IC is larger,
Calorific value big problem when easily causing charging, keeps mobile terminal surface temperature higher, affects user experience.
Invention content
For overcome in the prior art charging circuit it is of high cost, charging when calorific value it is big the problems such as, the embodiment of the present invention provide
A kind of charging circuit, including charging control circuit, the charging circuit further includes at least two charge integrated circuit IC, described
At least two charging IC are connected in parallel, and common output end is connect with battery charging input end, and the charging control circuit is used for
At least two charging IC is controlled to charge for battery.
On the other hand the embodiment of the present invention provides a kind of mobile terminal, used above-mentioned charging circuit.
The embodiment of the present invention is battery powered, a side jointly by using at least two charging IC of charging control circuit control
Face reduces the output current of each charging IC, and the procedure for producing requirement of single low current charge IC is low, and inexpensive makes the present invention
The production cost of charging circuit is effectively controlled in embodiment；On the other hand, multiple charging IC of the embodiment of the present invention can divide
Heat dissipation, improves user experience.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram of the first embodiment of charging circuit of the present invention, and charging circuit and battery are shown in figure
Connection relation；
Fig. 2 is the structural schematic diagram of the second embodiment of charging circuit of the present invention, and charging circuit and battery are shown in figure
Connection relation.
Specific implementation mode
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness ",
The orientation of instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" or
Position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than, the meaning of " at least two " is also two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection ", " contact " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
Referring to FIG. 1, being the structural schematic diagram of the first embodiment of charging circuit of the present invention, at least two in the present embodiment
Charge IC, is illustrated so that two are charged IC as an example, can also be three or three certainly the present invention is not limited to two charging IC
A above IC that charges.The charging circuit includes charging control circuit 1, further includes the charging IC3 of the first charging IC2 and second, charging
Control circuit 1 charges for controlling the first charging IC2 and the second charging IC3 for battery 6.
In the present embodiment, charging control circuit 1 can be used for control first charging IC2 and second charging IC3 whether work
Make.The connection relation of first charging IC2 and the second charging IC3 can be in parallel, the output end of the first charging IC2 and the second charging
The output end of IC3 is commonly connected to the input terminal of battery 6, i.e., is connect with battery charging input end.
Charging circuit further includes charging state detection circuit 4, and for detecting current charged state, charged state includes pre-
Charged state, constant-current charge state and constant-voltage charge state.
Above-mentioned charging control circuit 1, for when current charged state is pre-charge state or constant-voltage charge state, controlling
One of the first charging IC2 of system or the second charging IC3 charge for battery 6.
Above-mentioned charging control circuit 1 is additionally operable to when current charged state is constant-current charge state, the first charging of control
The chargings of IC2 and second IC3 is that battery 6 charges jointly.
Since in pre-charge state or constant-voltage charge state, charging circuit does not need larger output current, can adopt
It is charged to battery with a charging IC, to reduce circuit loss and calorific value.And in constant current state, in order to promote charging effect
Rate shortens the charging time, multiple charging IC can be used to charge battery.
In the present embodiment, charging circuit further includes charging current detecting circuit 5, for detecting the first charging IC2 or the
The output current of two charging IC3.
In the present embodiment, which may include：
First detection resistance 51 is connected between the first charging IC2 and battery 6, for by measuring the first detection resistance
51 both end voltage values calculate the output current of the first charging IC2；
Second detection resistance 52 is connected between the second charging IC3 and battery 6, for by measuring the second detection resistance
52 both end voltage values calculate the output current of the second charging IC3.
The terminal voltage that the present embodiment passes through measurement the first detection resistance 51 and the second detection resistance 52, you can determine that first fills
The output current of the chargings of electric IC2 and second IC3, method is simple and convenient, and charging electricity can be realized under the premise of controlling production cost
Detection and management of the road to charging current.
In the present embodiment, charging control circuit 1 can be also used for adjusting the confession of the first charging IC2 and the second charging IC3
Electric current, the maximum safe current that can be currently born by the capacity reckoning battery 6 of detection battery 6 (it is illustrative, with
For the battery of 3000mAH, calculate that the maximum safe current of the battery is 4.5A), and in constant-current phase by detecting and adjusting
The output current of first charging IC2 and the second charging IC3 make the sum of output current of the chargings of the first charging IC2 and second IC3 etc.
In or be slightly less than the maximum safe current, with the charge efficiency of further raising charging current, shorten the charging time.
The embodiment of the present invention is battery jointly by using the first charging IC of charging control circuit control and the second charging IC
On the one hand power supply reduces the output current of each charging IC, the procedure for producing requirement of single low current charge IC is low, and cost is honest and clean
Valence makes the production cost of charging circuit in the embodiment of the present invention be effectively controlled；On the other hand, by using multiple charging IC
It charges jointly for battery, improves supply current of the charging circuit to battery, shorten the charging time；In another aspect, multiple fill
Electric IC can disperse to radiate, and improve user experience.
Referring to FIG. 2, being the structural schematic diagram of the second embodiment of charging circuit of the present invention, which includes charging
Control circuit 1', further includes the first charge integrated circuit IC2' and the second charge integrated circuit IC3', and charging control circuit 1' is used
It charges for battery 6' in control the first charging IC2' and the second charging IC3'.
Charging circuit further includes charging state detection circuit 4 ', and for detecting current charged state, charged state includes
Pre-charge state, constant-current charge state and constant-voltage charge state.
Above-mentioned charging control circuit 1' is used for when current charged state is pre-charge state or constant-voltage charge state,
One of the first charging IC2' of control or the second charging IC3' are battery 6' chargings.
Above-mentioned charging control circuit 1' is additionally operable to when current charged state is constant-current charge state, and control first is filled
The chargings of electric IC2' and second IC3' is battery 6' chargings jointly.
In the present embodiment, charging circuit further includes temperature sensing circuit 5 ', for detecting the first charging IC2' or second
The temperature of charging IC3'；
Above-mentioned charging control circuit 1', for current charged state be pre-charge state or constant-voltage charge state, and
The temperature of any charging IC is more than threshold temperature (threshold temperature can be systemic presupposition, can also be set by user)
When, it is charged for battery using others charging IC.Illustratively, when temperature sensing circuit detects the temperature of the first charging IC2 '
When more than threshold temperature, charging control circuit 1' the first chargings of control IC2' is stopped, and the use of the second charging IC3' is battery
6 ' chargings.
Above-mentioned charging control circuit 1' is additionally operable in current charged state be constant-current charge state, and first charges
When the temperature of the chargings of IC2 ' or second IC3 ' is more than threshold temperature, reduce the output electricity of the first charging IC2 ' or the second charging IC3'
Stream.
In the present embodiment, charging control circuit 1' can be CPU (Central Processing Unit, central processing
Device).
The present embodiment detects the temperature of the first charging IC and the second charging IC by temperature sensing circuit, and in the first charging
When the temperature of the chargings of IC or second IC is more than threshold temperature, do not worked using charging control circuit control section charging IC, or
The electric current for reducing charging IC achievees the purpose that the calorific value for reducing mobile terminal, further improves user experience.
The embodiment of the present invention additionally provides a kind of mobile terminal, including charging circuit and battery, and charging circuit includes charging
Control circuit, further includes the charging IC of the first charging IC and second, and charging control circuit is filled for controlling the first charging IC and second
Electric IC charges for battery.
Charging circuit in the present embodiment can also be realized in above-mentioned charging circuit first embodiment and second embodiment
Function.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, and e.g., the present invention not only limits
In including the first charging IC, the second charging IC, can also charge IC etc. including third charging IC, the 4th.All essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (4)
1. a kind of charging circuit, including charging control circuit, which is characterized in that the charging circuit further includes at least two chargings
Integrated circuit IC, at least two charging integrate IC and are connected in parallel, and common output end is connect with battery charging input end, institute
It states charging control circuit and integrates IC for controlling at least two charging as battery charging；
The charging circuit further includes：Charging state detection circuit is connect with the charging control circuit, current for detecting
Charged state, the charged state includes pre-charge state, constant-current charge state and constant-voltage charge state；When the charging shape
When state detection circuit detects that current charged state is pre-charge state or constant-voltage charge state, the charge control electricity is notified
Road controls the part charging that at least two charging integrates in IC and integrates IC as battery charging；When the charged state is examined
When slowdown monitoring circuit detects that current charged state is constant-current charge state, notify at least two described in the charging control circuit control
It is that the battery charges that a charging, which integrates IC jointly,；
The charging circuit further includes：Charging current detecting circuit integrates the output of IC for detecting at least two charging
Electric current；The charging current detecting circuit includes the first detection resistance, is connected to the first charging and integrates between IC and battery, uses
In the output current for calculating the integrated IC of the first charging by measuring the first detection resistance both end voltage value；Second detection resistance, even
It is connected to the second charging to integrate between IC and battery, is used to collect by measuring the second detection resistance both end voltage value and calculating second and charge
At the output current of IC；
When the charging state detection circuit detects that battery is in constant-current charge state, the capacity for detecting battery calculates battery
The maximum safe current that can currently bear is detected by the charging control circuit and adjusts the integrated IC and second of the first charging and filled
It is electrically integrated the output current of IC, the sum of the output current that the first charging integrates the integrated IC of the chargings of IC and second is made to be equal to or slightly less than
The maximum safe current of battery.
2. charging circuit as described in claim 1, which is characterized in that further include：
Temperature sensing circuit integrates the temperature of IC for detecting at least two charging；
The charging control circuit for being pre-charge state or constant-voltage charge state in current charged state, and any fills
When being electrically integrated the temperature of IC more than threshold temperature, it is that the battery charges to be charged using others and integrate IC；
The charging control circuit is additionally operable in current charged state be constant-current charge state, and described at least two charge
When the temperature that a charging in integrated IC integrates IC is more than the threshold temperature, reduces at least two charging and integrate in IC
One charging integrate IC output current.
3. such as claim 1 to 2 any one of them charging circuit, which is characterized in that the charging control circuit is centre
Manage device CPU.
4. a kind of mobile terminal, which is characterized in that including claims 1 to 3 any one of them charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137972.XA CN105322597B (en) | 2015-03-25 | 2015-03-25 | A kind of charging circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137972.XA CN105322597B (en) | 2015-03-25 | 2015-03-25 | A kind of charging circuit and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105322597A CN105322597A (en) | 2016-02-10 |
| CN105322597B true CN105322597B (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510137972.XA Active CN105322597B (en) | 2015-03-25 | 2015-03-25 | A kind of charging circuit and mobile terminal |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106254583B (en) * | 2016-07-28 | 2018-06-29 | 广东欧珀移动通信有限公司 | Mobile terminal |
| CN106026305B (en) * | 2016-07-28 | 2019-05-24 | Oppo广东移动通信有限公司 | Mobile terminal |
| CN106785135A (en) * | 2016-12-20 | 2017-05-31 | 北京小米移动软件有限公司 | Multichannel charging method, device and equipment |
| CN107302245A (en) * | 2017-06-26 | 2017-10-27 | 宇龙计算机通信科技(深圳)有限公司 | A kind of charge control method and terminal |
| CN107834640B (en) * | 2017-11-14 | 2020-10-23 | 维沃移动通信有限公司 | Charging method and terminal |
| CN112019681B (en) * | 2019-05-31 | 2021-10-26 | 北京小米移动软件有限公司 | Control method of mobile terminal, mobile terminal and storage medium |
| CN114498811B (en) * | 2021-12-24 | 2022-12-20 | 荣耀终端有限公司 | Charging management module, charging circuit, charging control method and electronic equipment |
| CN114362327B (en) * | 2022-02-16 | 2024-04-23 | 北京小米移动软件有限公司 | Charging method and device, electronic equipment and non-transitory readable storage medium |
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| US3758839A (en) * | 1971-10-04 | 1973-09-11 | Fox Prod Co | Current and voltage controlled battery charger |
| CN201590668U (en) * | 2009-10-22 | 2010-09-22 | 中兴通讯股份有限公司 | Charging device for mobile terminal |
| CN203086213U (en) * | 2013-02-06 | 2013-07-24 | 深圳市金泰克半导体有限公司 | Rapid charger and mobile power supply with the charger |
| CN103904377A (en) * | 2014-03-28 | 2014-07-02 | 深圳市中兴移动通信有限公司 | Quick charging method and mobile terminal |
| CN104410116A (en) * | 2014-11-18 | 2015-03-11 | 深圳市中兴移动通信有限公司 | Quick charging device and quick charging method |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3758839A (en) * | 1971-10-04 | 1973-09-11 | Fox Prod Co | Current and voltage controlled battery charger |
| CN201590668U (en) * | 2009-10-22 | 2010-09-22 | 中兴通讯股份有限公司 | Charging device for mobile terminal |
| CN203086213U (en) * | 2013-02-06 | 2013-07-24 | 深圳市金泰克半导体有限公司 | Rapid charger and mobile power supply with the charger |
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| CN104410116A (en) * | 2014-11-18 | 2015-03-11 | 深圳市中兴移动通信有限公司 | Quick charging device and quick charging method |
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| Publication number | Publication date |
|---|---|
| CN105322597A (en) | 2016-02-10 |
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