CN103701156A - Charge device and electronic equipment - Google Patents
Charge device and electronic equipment Download PDFInfo
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- CN103701156A CN103701156A CN201310373336.8A CN201310373336A CN103701156A CN 103701156 A CN103701156 A CN 103701156A CN 201310373336 A CN201310373336 A CN 201310373336A CN 103701156 A CN103701156 A CN 103701156A
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Abstract
The invention provides a charge device and electronic equipment with the charge device. The charge device comprises a voltage output end and at least two charge interfaces, wherein the at least two charge interfaces are connected with a first connecting point in parallel and are connected with the voltage output end through the first connecting point; a diode is arranged between each charge interface and the first connecting point; the conduction direction of each diode is from the charge interface corresponding to the diode to the first connecting point; the at least two charge interfaces are further connected with a second connecting point in parallel and are connected with a battery to be charged through the second connecting point; a triode is arranged between each charge interface and the second connecting point; each charge interface is connected with the battery to be charged through corresponding triodes so as to charge the battery to be charged. By adopting the charge device, the security in multi-way charge is improved, and the cost is saved.
Description
Technical field
The invention belongs to appliance field, particularly relate to a kind of charging device and electronic equipment.
Background technology
Along with the continuous application of various electronic equipments, user is more and more higher to the requirement of electronic functionalities.So that electronic equipment is charged as to example, user not only needs directly to charge by power supply, AC power source adapter (AC adapter) for example, also needs to support USB (Universal Serial BUS, USB) the interface charging of computer, wireless charging etc. even.
The electronic equipment with multichannel charge function of take is example, and multichannel charging modes of the prior art mainly contains following two kinds:
A kind of mode is that multichannel charging inlet is directly in parallel, for example refers to Fig. 1, and Fig. 1 is the two-way charging circuit schematic diagram of electronic product in prior art.This two-way charging circuit comprises first interface J'1 and the second interface J'2, wherein said first interface J'1 such as AC power source adapter charging inlet, and described the second interface J'2 is for example computer USB charging inlet.User can charge to battery by above-mentioned two-way charging circuit simultaneously.The advantage of which is easy realization, and cost is low; Shortcoming is poor safety performance, especially the voltage of first interface J'1 and the second interface J'2 can pour in down a chimney mutually, when using that wherein a road charging inlet charges, if an other road charging inlet is short-circuited, the conductors such as for example sweat infiltration, key insert and cause short circuit, are easy to burn out charge power supply or electronic equipment; And because general charge power supply is directly use in parallel, cause at described first interface J'1 and the second interface J'2 access charge power supply, charging, no survey is easy to burn out power supply or electronic equipment simultaneously.
Another kind of mode is by special charging IC(integrated circuit) realize.This IC provides two-way charging inlet, includes the devices such as charging triode and field effect transistor, and can control charging current.But the shortcoming of which is: main flow mobile device solution itself of the prior art has comprised the soft and hardware scheme of charging circuit and charging current control, if realize two-way or multichannel is charged by application-specific integrated circuit, be not only very large waste, and cost is very high.
Therefore, need to solve the above-mentioned technical problem existing in prior art.
Summary of the invention
The object of the present invention is to provide a kind of charging device and electronic equipment, the cost that is intended to reduce multichannel charging is high, improves the fail safe of multichannel charging.
For reaching above-mentioned beneficial effect, the embodiment of the present invention provides a kind of charging device, comprises voltage output end, and the charging inlet of two-way at least;
At least the described charging inlet of two-way is connected in parallel to one first tie point, and is connected to described voltage output end by described the first tie point; Wherein described in each, between charging inlet and described the first tie point, a diode is set, and described in each, the conduction orientation of diode is from described charging inlet corresponding to this diode to described the first tie point;
At least the described charging inlet of two-way is also connected in parallel to one second tie point, and is connected to battery to be charged by described the second tie point; Wherein described in each, between charging inlet and described the second tie point, be provided with a triode, described in each, charging inlet is connected to described battery to be charged by the described triode of correspondence, is used for to described battery charging to be charged.
In one embodiment of the present invention, described charging device also comprises current controling end, and at least the described charging inlet of two-way is also connected in parallel to one the 3rd tie point, and is connected to described current controling end by described the 3rd tie point.
In one embodiment of the present invention, described triode comprises emitter, base stage and collector electrode;
Described in each, the described emitter of triode all connects corresponding described charging inlet;
Described in each, the described base stage of triode is all connected to described the 3rd tie point, and then is connected to described current controling end;
Described in each, the described collector electrode of triode is all connected to described the second tie point, and then is connected to described battery to be charged.
In one embodiment of the present invention, described charging inlet comprises AC power source adapter charging inlet, USB charging inlet or wireless charging interface.
In one embodiment of the present invention, described triode is positive-negative-positive triode.
For reaching above-mentioned beneficial effect, the embodiment of the present invention also provides a kind of electronic equipment, and described electronic equipment comprises battery, also comprises the charging device for described battery is charged, described charging device comprises voltage output end, and the charging inlet of two-way at least;
At least the described charging inlet of two-way is connected in parallel to one first tie point, and is connected to described voltage output end by described the first tie point; Wherein described in each, between charging inlet and described the first tie point, a diode is set, and described in each, the conduction orientation of diode is from described charging inlet corresponding to this diode to described the first tie point;
At least the described charging inlet of two-way is also connected in parallel to one second tie point, and is connected to described battery by described the second tie point; Wherein described in each, between charging inlet and described the second tie point, be provided with a triode, described in each, charging inlet is connected to described battery by the described triode of correspondence, is used for to described battery charging.
In one embodiment of the present invention, described charging device also comprises current controling end, and at least the described charging inlet of two-way is also connected in parallel to one the 3rd tie point, and is connected to described current controling end by described the 3rd tie point.
In one embodiment of the present invention, described triode comprises emitter, base stage and collector electrode;
Described in each, the described emitter of triode all connects corresponding described charging inlet;
Described in each, the described base stage of triode is all connected to described the 3rd tie point, and then is connected to described current controling end;
Described in each, the described collector electrode of triode is all connected to described the second tie point, and then is connected to described battery to be charged.
In one embodiment of the present invention, described charging inlet comprises AC power source adapter charging inlet, USB charging inlet or wireless charging interface.
In one embodiment of the present invention, described triode is positive-negative-positive triode.
The embodiment of the present invention arranges a diode and triode by each road in multichannel charging, unilateal conduction characteristic due to diode, and the electric current of triode can not flow to emitter from collector electrode, can guarantee that the voltage between charging circuit can not pour in down a chimney mutually, improved the fail safe of multichannel charging, and without IC is set specially, saved cost.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the two-way charging of electronic equipment in prior art;
Fig. 2 is the electrical block diagram of the electronic equipment that provides of first embodiment of the invention;
Fig. 3 is the electrical block diagram of the electronic equipment that provides of second embodiment of the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The charging device that the embodiment of the present invention provides comprises battery and charging device, and described charging device comprises voltage output end, and the charging inlet of two-way at least; At least the described charging inlet of two-way is connected in parallel to one first tie point, and is connected to described voltage output end by described the first tie point; Wherein described in each, between charging inlet and described the first tie point, a diode is set, and described in each, the conduction orientation of diode is from described charging inlet corresponding to this diode to described the first tie point; At least the described charging inlet of two-way is also connected in parallel to one second tie point, and is connected to described battery (or other battery to be charged) by described the second tie point; Wherein described in each, between charging inlet and described the second tie point, be provided with a triode, described in each, charging inlet is connected to described battery by the described triode of correspondence, is used for to described battery charging.Described charging device also comprises current controling end, and at least the described charging inlet of two-way is also connected in parallel to one the 3rd tie point, and is connected to described current controling end by described the 3rd tie point.
The two-way He San road charging inlet of take respectively below describes as example.
Refer to Fig. 2, the inner connecting structure schematic diagram of the electronic equipment that Fig. 2 provides for first embodiment of the invention, described electronic equipment comprises battery BT and charging device (other parts in figure except battery BT), and described charging device includes voltage output end VCHG, voltage sample end VCDT, current controling end VDRV and Current Control field effect transistor Q1 etc.
Wherein Fig. 2 take two charging inlets to describe as example, these two charging inlets are respectively the first charging inlet J1 and the second charging inlet J2, described the first charging inlet J1 and the second charging inlet J2 are connected in parallel to one first tie point P1, and are connected to voltage output end VCHG by described the first tie point P1.Wherein said the first charging inlet J1 is for example the charging inlet of AC power source adapter, and described the second charging inlet J2 is for example the charging inlet of computer USB, can certainly be the charging inlet of other form, all within protection range of the present invention.
Please continue to refer to Fig. 2, between described the first charging inlet J1 and described the first tie point P1, one first diode D1 is set, and the conduction orientation of described the first diode D1 is from described the first charging inlet J1 to described the first tie point P1; Between described the second charging inlet J2 and described the first tie point P1, one second diode D2 is set, and the conduction orientation of described the second diode D2 is from described the second charging inlet J2 to described the first tie point P1.
Please continue to refer to Fig. 2, described the first charging inlet J1 and the second charging inlet J2 are also connected in parallel to one second tie point P2, and are connected to described battery BT by described the second tie point P2.Between wherein said the first charging inlet J1 and described the second tie point P2, be provided with one first triode Q2, described the first charging inlet J1 is connected to described battery BT by described the first triode Q2, is used for to described battery BT charging.Between described the second charging inlet J2 and described the second tie point P2, be provided with one second triode Q3, described the second charging inlet J2 is connected to described battery BT by described the second triode Q3, is used for to described battery BT charging.
Please continue to refer to Fig. 2, described charging device also comprises one first resistance R 1, the second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4, wherein said the first resistance R 1 and the second resistance R 2 form sample circuit, and described the 4th resistance R 4 is formed between described the second tie point P2 and described battery BT.
Please continue to refer to Fig. 2, described the first charging inlet J1 and the second charging inlet J2 are also connected in parallel to one the 3rd tie point P3, and are connected to current controling end VDRV by described the 3rd tie point P3.
In embodiments of the present invention, the emitter of the triode that described in each, charging inlet is corresponding all connects corresponding charging inlet, and base stage is all connected to described the 3rd tie point P3, and then is connected to current controling end VDRV, collector electrode is all connected to described the second tie point P2, and then connects described battery BT.
For example the emitter of described the first triode Q2 connects described the first charging inlet J1, the base stage of described the first triode Q2 is connected to described the 3rd tie point P3, and then be connected to current controling end VDRV, the collector electrode of described the first triode Q2 is connected to described the second tie point P2, and then connects described battery BT; The emitter of described the second triode Q3 connects described the second charging inlet J2, the base stage of described the second triode Q3 is connected to described the 3rd tie point P3, and then be connected to current controling end VDRV, the collector electrode of described the second triode Q3 is connected to described the second tie point P2, and then connects described battery BT.
Wherein said the first diode D1 and described the second diode D2 form by P type semiconductor and N type semiconductor sintering, described the first triode Q2 and described the second triode Q3 are positive-negative-positive triode, the triode being comprised of 1 N type semiconductor of 2 P type semiconductor sandwich.And described Current Control field effect transistor Q1 is N-MOS(Metal-Oxide-SemIConductor, Metal-oxide-semicondutor) pipe.
In specific implementation process, when described battery BT being charged by described the first charging inlet J1, the voltage of described the first charging inlet J1 passes to voltage output end VCHG by described the first diode D1, the electric current of described the first charging inlet J1 inputs to described battery BT by described the first triode Q2 and described the 4th resistance R 4, and described battery BT is charged.When described battery BT being charged by described the second charging inlet J2, the voltage of described the second charging inlet J2 passes to voltage output end VCHG by described the second diode D2, the electric current of described the second charging inlet J2 inputs to described battery BT by described the second triode Q3 and described the 4th resistance R 4, and described battery BT is charged.When described battery BT is charged by described the first charging inlet J1 and described the second charging inlet J2 at the same time, the similar wherein road charging inlet of principle, the charging current of the now actual acquisition of described battery BT is that described the first charging inlet J1 and described the second charging inlet J2 input to the electric current sum of described battery BT by the electric current of described the 4th resistance R 4.
More specifically, the baseband circuit of described electronic equipment can obtain the magnitude of voltage of voltage output end VCHG by voltage sample end VCDT, then by the voltage drop value on the first diode D1 described in software compensation or the second diode D2, can obtain actual charging voltage value.Also can correct and reach sampling precision requirement by adjusting the resistance of described the first resistance R 1, the second resistance R 2, the impact of the voltage drop of adjusting described the first diode D1 and the second diode D2 on voltage output end VCHG magnitude of voltage.
Wherein interface CHR_LDO is conducting and the cut-off that described baseband circuit is controlled Current Control field effect transistor Q1, and described baseband circuit can be controlled the size of current that flows through described Current Control field effect transistor Q1 by current controling end VDRV.The voltage difference of described baseband circuit fetch interface I_SENSE and interface BATSNS, can obtain the magnitude of voltage at described the 4th resistance R 4 two ends, and then according to Ohm's law, obtain by the current value of described the 4th resistance R 4 the i.e. charging current value of reality to described battery BT.Once the interior electric current of described the 4th resistance R 4 is greater than (or being less than) predetermined current value, described baseband circuit reduces or increases the electric current that flows through described Current Control field effect transistor Q1 by current controling end VDRV, the base current of described the first triode Q2 or described the second triode Q3 is also along with reducing (or increase), according to the operation principle of triode, the collector current of described the first triode Q2 or described the second triode Q3 will reduce (or increase), the interior electric current of described the 4th resistance R 4 also will reduce (or increase), until consistent with described predetermined current value.
Obviously, in embodiments of the present invention, when only having a road charging inlet to charge to described battery BT, for example when only having the first charging inlet J1 to charge to described battery BT, unilateal conduction characteristic due to described the second diode D2, and the electric current of described the second triode Q3 can not flow to emitter from collector electrode, therefore charging voltage cannot be poured in down a chimney to the port of described the second charging inlet J2, even if the situation of short circuit appears in the port of described the second charging inlet J2, can not bring potential safety hazard yet.
And when multichannel charging inlet charges to described battery BT together; for example described the first charging inlet J1 and described the second charging inlet J2 are simultaneously to described battery BT charging; unilateal conduction characteristic due to diode; described baseband circuit can detect the maximum charging voltage value in multichannel charge power supply all the time, can not affect the working effect of excess voltage protection.And because unilateal conduction characteristic and the triode sense of current of diode can not flow to emitter from collector electrode, the problem that can mutually not pour in down a chimney by there is electric current between described the first charging inlet J1 and described the second charging inlet J2, the safety while having guaranteed charging.
Refer to Fig. 3, the structural representation of the electronic equipment that Fig. 3 provides for second embodiment of the invention.
At the second embodiment shown in Fig. 3, be on the basis of the first embodiment shown in Fig. 2, to increase by one the 3rd charging inlet J3; described the 3rd charging inlet J3 is for example wireless charging interface; can certainly be the charging inlet of other form, all within protection range of the present invention.
See also Fig. 2 and Fig. 3, wherein said the first charging inlet J1, described the second charging inlet J2, described the 3rd charging inlet J3 are connected in parallel to described the first tie point P1, between described the 3rd charging inlet J3 and described the first tie point P1, be provided with one the 3rd diode D3, the conduction orientation of described the 3rd diode D3 is from described the 3rd charging inlet J3 to described the first tie point P1, and is connected to voltage output end VCHG by described the first tie point P1.
Wherein said the first charging inlet J1, described the second charging inlet J2, described the 3rd charging inlet J3 are connected in parallel to described the second tie point P2, and are connected to described battery BT by described the second tie point P2.Between described the 3rd charging inlet J3 and described the second tie point P2, one the 3rd triode Q4 is also set.Described the first charging inlet J1, described the second charging inlet J2, described the 3rd charging inlet J3 are connected in parallel to described the 3rd tie point P3, and then be connected to current controling end VDRV, the emitter of wherein said the 3rd triode Q4 connects described the first charging inlet J1, the base stage of described the 3rd triode Q4 is connected to described the 3rd tie point P3, and then be connected to current controling end VDRV, the collector electrode of described the 3rd triode Q4 is connected to described the second tie point P2, and then connects described battery BT.
Wherein said the first diode D1, described the second diode D2 and described the 3rd diode D3 form by P type semiconductor and N type semiconductor sintering, described the first triode Q2, described the second triode Q3 and described the 3rd triode Q4 are positive-negative-positive triode, the triode being comprised of 1 N type semiconductor of 2 P type semiconductor sandwich.
In specific implementation process, when described battery BT being charged by described the 3rd charging inlet J3, the voltage of described the 3rd charging inlet J3 passes to voltage output end VCHG by described the 3rd diode D3, the electric current of described the 3rd charging inlet J3 inputs to described battery BT by described the 4th triode Q4 and described the 4th resistance R 4, and described battery BT is charged.When described battery BT is charged by described the first charging inlet J1, described the second charging inlet J2 and described the 3rd diode D3 at the same time, the similar wherein road charging inlet of principle, the charging current of the now actual acquisition of described battery BT is that described the first charging inlet J1, described the second charging inlet J2 and described the 3rd charging inlet J3 input to the electric current sum of described battery BT by the electric current of described the 4th resistance R 4.
Detailed description about the charging process of the second embodiment shown in Fig. 3 refers to the description for Fig. 2, repeats no more herein.Certainly Fig. 2 and Fig. 3 only show the schematic diagram of two-way He San road charging inlet; about four tunnels, five tunnels and the electronic equipment of multichannel charging inlet more; all within protection range of the present invention; and principle is all similar with the principle shown in Fig. 2 and Fig. 3; be only that every increase by one tunnel charging only needs a corresponding diode and the triode of increasing, repeat no longer one by one herein.
In sum, the present invention has promoted the security performance of multichannel charging well; And every increase by one tunnel charging only needs a corresponding diode and the triode of increasing, cost is very low, and the mode of installation can be drawn by the embodiment shown in Fig. 2 and Fig. 3 easily.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a charging device, is characterized in that, comprises voltage output end, and the charging inlet of two-way at least;
At least the described charging inlet of two-way is connected in parallel to one first tie point, and is connected to described voltage output end by described the first tie point; Wherein described in each, between charging inlet and described the first tie point, a diode is set, and described in each, the conduction orientation of diode is from described charging inlet corresponding to this diode to described the first tie point;
At least the described charging inlet of two-way is also connected in parallel to one second tie point, and is connected to battery to be charged by described the second tie point; Wherein described in each, between charging inlet and described the second tie point, be provided with a triode, described in each, charging inlet is connected to described battery to be charged by the described triode of correspondence, is used for to described battery charging to be charged.
2. charging device according to claim 1, is characterized in that, described charging device also comprises current controling end, and at least the described charging inlet of two-way is also connected in parallel to one the 3rd tie point, and is connected to described current controling end by described the 3rd tie point.
3. charging device according to claim 1, is characterized in that, described triode comprises emitter, base stage and collector electrode;
Described in each, the described emitter of triode all connects corresponding described charging inlet;
Described in each, the described base stage of triode is all connected to described the 3rd tie point, and then is connected to described current controling end;
Described in each, the described collector electrode of triode is all connected to described the second tie point, and then is connected to described battery to be charged.
4. charging device according to claim 1, is characterized in that, described charging inlet comprises AC power source adapter charging inlet, USB charging inlet or wireless charging interface.
5. charging device according to claim 1, is characterized in that, described triode is positive-negative-positive triode.
6. an electronic equipment, described electronic equipment comprises battery, it is characterized in that, also comprises the charging device for described battery is charged, described charging device comprises voltage output end, and the charging inlet of two-way at least;
At least the described charging inlet of two-way is connected in parallel to one first tie point, and is connected to described voltage output end by described the first tie point; Wherein described in each, between charging inlet and described the first tie point, a diode is set, and described in each, the conduction orientation of diode is from described charging inlet corresponding to this diode to described the first tie point;
At least the described charging inlet of two-way is also connected in parallel to one second tie point, and is connected to described battery by described the second tie point; Wherein described in each, between charging inlet and described the second tie point, be provided with a triode, described in each, charging inlet is connected to described battery by the described triode of correspondence, is used for to described battery charging.
7. electronic equipment according to claim 6, is characterized in that, described charging device also comprises current controling end, and at least the described charging inlet of two-way is also connected in parallel to one the 3rd tie point, and is connected to described current controling end by described the 3rd tie point.
8. electronic equipment according to claim 7, is characterized in that, described triode comprises emitter, base stage and collector electrode;
Described in each, the described emitter of triode all connects corresponding described charging inlet;
Described in each, the described base stage of triode is all connected to described the 3rd tie point, and then is connected to described current controling end;
Described in each, the described collector electrode of triode is all connected to described the second tie point, and then is connected to described battery to be charged.
9. electronic equipment according to claim 6, is characterized in that, described charging inlet comprises AC power source adapter charging inlet, USB charging inlet or wireless charging interface.
10. electronic equipment according to claim 6, is characterized in that, described triode is positive-negative-positive triode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310373336.8A CN103701156A (en) | 2013-08-23 | 2013-08-23 | Charge device and electronic equipment |
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| CN201310373336.8A CN103701156A (en) | 2013-08-23 | 2013-08-23 | Charge device and electronic equipment |
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| CN103701156A true CN103701156A (en) | 2014-04-02 |
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| CN201310373336.8A Pending CN103701156A (en) | 2013-08-23 | 2013-08-23 | Charge device and electronic equipment |
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| CN105207279A (en) * | 2014-06-12 | 2015-12-30 | 青岛海信移动通信技术股份有限公司 | Charge and discharge circuit and mobile terminal |
| CN106786887A (en) * | 2016-12-23 | 2017-05-31 | 捷开通讯(深圳)有限公司 | A kind of charge control system |
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| CN101364745A (en) * | 2007-08-08 | 2009-02-11 | 鹏智科技(深圳)有限公司 | Electronic apparatus capable of automatically choosing power supply source |
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| CN105207279A (en) * | 2014-06-12 | 2015-12-30 | 青岛海信移动通信技术股份有限公司 | Charge and discharge circuit and mobile terminal |
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