CN104242389A - Charging circuit, battery core and mobile terminal - Google Patents
Charging circuit, battery core and mobile terminal Download PDFInfo
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- CN104242389A CN104242389A CN201410441416.7A CN201410441416A CN104242389A CN 104242389 A CN104242389 A CN 104242389A CN 201410441416 A CN201410441416 A CN 201410441416A CN 104242389 A CN104242389 A CN 104242389A
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Abstract
The invention relates to the field of mobile terminals, in particular to a charging circuit, a battery core and a mobile terminal. The charging circuit comprises a heating circuit. The heating circuit is electrically connected with a heating film when the battery core and a battery core tank are in the clamping state, and the heating film is attached to the battery core in a sleeving mode. The heating film converts electric energy output by the heating circuit into heat energy and heats the battery core through the heat energy. When the battery core is charged in a low-temperature charging environment, the heating film converts the electric energy output by the heating circuit into the heat energy and heats the battery core through the heat energy, so that the temperature of the battery core is guaranteed, and normal charging of the battery core is achieved.
Description
Technical field
The present invention relates to field of mobile terminals, be specifically related to a kind of charging circuit, battery core and mobile terminal.
Background technology
Mobile terminal, is called mobile communication terminal again, refers to the electronic equipment that can use in movement, comprises the electronic equipments such as mobile phone, notebook, panel computer, POS, IPAD or even vehicle-mounted computer.Existing third party develops a large amount of application programs for mobile terminal, has enriched the function of mobile terminal.There is the mobile terminal enriching function, become people's personal effects gradually.Along with the frequency of utilization of mobile terminal increases gradually, but the electricity that battery core can store is limited, therefore needs frequent charging.
Current mobile phone and most mobile terminal are equipped with the battery core used and are lithium battery.Lithium battery can work in the temperature range of-10 ~ 55 degrees Celsius, but the better suited temperature range of charge ratio is 5 ~ 45 degrees Celsius, especially the scope of 10 ~ 35 degrees Celsius is better, and its charging effect of temperature range beyond 5 ~ 45 degrees Celsius is deteriorated, especially when temperature is poorer lower than its charging effect when 5 degrees Celsius.Reason is the reduction along with temperature, the activity of lithium ion can be deteriorated, easily forming lithium metal at graphite crystal surface deposition, can there is irreversible reaction with electrolyte in the lithium metal of formation, thus causes lithium battery can only be charged into few electricity for a long time even can not filling electricity.In addition, if lithium battery charges for a long time at low temperatures, capacity not only can be caused to decline, and can useful life be affected.Therefore, so a lot of mobile terminal is all provided with when the temperature of lithium battery is lower than automatically interrupting charging during uniform temperature.
In sum, the problem that the mobile terminal that prior art not yet solves outfit lithium battery charges at low temperatures.
Summary of the invention
The object of the present invention is to provide a kind of charging circuit, battery core and mobile terminal, under low temperature charging environment, battery core is heated, realize normally charging to battery core.
First aspect, the invention provides a kind of charging circuit, and described charging circuit comprises heater circuit, and under the state that battery core engages with battery core groove, described heater circuit is electrically connected with heating film, and described heating Membrane cover is affixed on described battery core;
Described heating film, is converted to heat energy for the electric energy exported by described heater circuit, heats described battery core with described heat energy.
Second aspect, the invention provides a kind of mobile terminal, and described mobile terminal comprises battery core, it is characterized in that, described mobile terminal also comprises above-mentioned charging circuit, and described charging circuit is electrically connected with battery core.
The third aspect, the invention provides a kind of battery core, and described battery core comprises heating film; Described heating film, for converting electrical energy into heat energy, heats described battery core with described heat energy.
Beneficial effect of the present invention: when charging to battery core under low temperature charging environment, the electric energy that heater circuit exports is converted to heat energy by heating film, heats battery core with this heat energy, ensures the temperature of battery core, realizes normally charging to battery core.
Accompanying drawing explanation
Fig. 1 is the heater circuit 16 under the state engaged with battery core groove in battery core 13 and the connection diagram of heating film 17;
Fig. 2 is heating film 17 and the perspective view of battery core 13 in mobile terminal;
Fig. 3 be large resistance resistance wire 173 in be located at the schematic diagram of heating film 17;
Fig. 4 is a kind of structure composed of the charging circuit that the embodiment of the present invention provides;
Fig. 5 is a kind of physical circuit figure of heater circuit 16;
Fig. 6 is that the one of the charging circuit that the embodiment of the present invention provides optimizes structure composed figure;
Fig. 7 is another optimization structure composed figure of the charging circuit that the embodiment of the present invention provides;
Fig. 8 is a kind of physical circuit figure of auxiliary charging circuit 122.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not limited to the present invention.
In embodiments of the present invention, the charging device described in the embodiment of the present invention can be electronic equipment, can also be charging adapter.
The embodiment of the present invention additionally provides charging device, and when this charging device is connected with mobile terminal, this charging device can carry out the mutual transmission of data with mobile terminal; Meanwhile, when this charging device is connected with mobile terminal, when the temperature of battery core 13 is higher than the second temperature, the battery core 13 of this charging device to mobile terminal is charged.
It should be noted that, for the connected mode of this charging device and this mobile terminal, the embodiment of the present invention does not limit, and comprises wireless connections and wired connection.This mobile terminal includes charging inlet 15 and control circuit 11.
If this charging device and this mobile terminal wireless connections, the charging inlet 15 of mobile terminal is coupled and receives the wireless signal that described charging device sends to described mobile terminal, from this wireless signal, be coupled out the signal of telecommunication; When the battery core 13 of this charging device to this mobile terminal is charged, with the signal of telecommunication be coupled out, battery core 13 is charged; Or when this charging device and this communication of mobile terminal, control circuit 11 demodulates data from this signal of telecommunication.
If this charging device and this mobile terminal wired connection (such as: charging inlet 15 grafting of the charging inlet of this charging device and this mobile terminal), the control circuit 11 of mobile terminal carries out transfer of data by its charging inlet 15 with this charging device; In addition when the temperature of battery core 13 is higher than described second temperature, this charging device can charge to battery core 13; Again in addition, this charging device also directly can be powered to this control circuit 11, such as when the electricity deficiency of the battery core 13 of mobile terminal thinks that control circuit 11 is powered, when charging inlet 15 grafting of the charging inlet of this charging device and this mobile terminal, this charging device is directly powered to this control circuit 11 by the charging inlet 15 of mobile terminal, and control circuit 11 works on power.
Owing to whether can charge to battery core 13, with much electric currents, battery core 13 is charged, all relevant with the temperature of battery core 13, such as relevant with the surface temperature of battery core 13.For the embodiment of the present invention for improving charge efficiency, battery core 13 is heated lower than during the first temperature in the temperature of battery core 13, make the temperature of battery core 13 be elevated to the state being greater than this first temperature, when the temperature of battery core 13 is higher than this first temperature, battery core 13 can support large current charge; Like this, the embodiment of the present invention, when the temperature of battery core 13 is higher than this first temperature, carries out large current charge with the first electric current to described battery core 13.
For the temperature in battery core 13 heats battery core 13 higher than during this first temperature, embodiments provide charging circuit, described charging circuit connects charging inlet 15 and battery core 13 respectively.This battery core 13 is for powering to mobile terminal.When the temperature of battery core 13 is higher than described second temperature, after the charging inlet of charging equipment is connected with the charging inlet 15 of mobile terminal, if control circuit 11 has controlled described charging circuit and made the charging inlet 15 of mobile terminal be electrically connected with described battery core 13 through described charging circuit, charging device can charge to described battery core 13 through the charging inlet 15 of mobile terminal, charging circuit successively.
Fig. 1 shows the connection diagram of heater circuit under the state engaged with battery core groove in battery core 13 16 and heating film 17, but illustrate only the part relevant to the embodiment of the present invention.
The charging circuit that the embodiment of the present invention provides, see Fig. 1, described charging circuit comprises heater circuit 16, and under the state that battery core 13 engages with battery core groove, described heater circuit 16 is electrically connected with heating film 17, and described heating film 17 cover is affixed on described battery core 13.Described heating film 17, is converted to heat energy for the electric energy exported by described heater circuit 16, heats described battery core 13 with described heat energy.
In embodiments of the present invention, for heating battery core 13, to improve the temperature of battery core 13 when charging to battery core 13, the sheathed and heating film 17 that is sticked on the surface of battery core 13.Treat battery core 13 to snap in the battery core groove of mobile terminal, under the state that battery core 13 engages with battery core groove, the heater circuit 16 that this heating film 17 and charging circuit comprise is electrically connected.Export the signal of telecommunication by heater circuit 16 to this heating film 17, electric energy contained for this signal of telecommunication is converted to heat energy by heating film 17, heats battery core 13 with the heat energy changed out.
What deserves to be explained is, heating film 17 has the medium converting electrical energy into heat energy, for which kind of medium of employing, does not limit at this.
As the embodiment of the present invention one embodiment, during operating state, see Fig. 1, described heating film 17 cover is affixed on described battery core 13, time not in working order, described heating film 17 can be disassembled from described battery core 13.As the another embodiment of the embodiment of the present invention, when making battery core 13, also by heating film 17 Integrated design in battery core 13, described battery core 13 can be affixed on by described heating film 17 cover.As another embodiment of the embodiment of the present invention, described heating film 17 cover is affixed on described battery core 13, is specially: described heating film 17 is sheathed and be attached at the surface of described battery core 13.
In the embodiment of the present invention one embodiment, in described heating film 17, be provided with heating element; Under the state that described battery core 13 engages with the battery core groove of described mobile terminal, described heater circuit 16 is electrically connected with described heating element; Described heating element, is converted to heat energy for the electric energy exported by described heater circuit 16, and described heating film 17 is heated described battery core 13 with described heat energy.
In the present embodiment, described heating film 17 is made up of Heat Conduction Material.As a kind of embodiment of the embodiment of the present invention, described heating film 17 is made up of heat conductive silica gel, and described heating element is arranged in described heating film 17 embeddedly.Preferably, for when described heating film 17 is fixed on the surface of described battery core 13, can adopt heat-conducting glue that described heating film 17 cover is affixed on the surface of described battery core 13.
As a kind of embodiment of the embodiment of the present invention, when battery core 13 being snapped in the battery core groove of mobile terminal, and under the state that described battery core 13 engages with the battery core groove of described mobile terminal, described heater circuit 16 is connected with battery core 13, when battery core 13 can normally be powered for heater circuit 16, if need to heat battery core 13, the signal of telecommunication can be exported for this heater circuit 16 by this battery core 13, this heater circuit 16 is made to export the signal of telecommunication to the heating element in described heating film 17, the contained electric energy of the signal of telecommunication making this heating element be exported by this heater circuit 16 is further converted to heat energy, because heating film 17 is that good Heat Conduction Material is made, the heat energy guiding battery core 13 heating element produced by this heating film 17, battery core 13 is heated.
As a kind of embodiment of the embodiment of the present invention, described heater circuit 16 is connected with the charging inlet 15 of mobile terminal, when the charging inlet of charging device is connected with the charging inlet 15 of this mobile terminal, if need to heat battery core 13, the signal of telecommunication can be exported by the charging inlet 15 of this mobile terminal to this heater circuit 16 by this charging device, then this heater circuit 16 is made to export the signal of telecommunication to the heating element in described heating film 17, the contained electric energy of the signal of telecommunication making this heating element be exported by this heater circuit 16 is further converted to heat energy, because heating film 17 is that good Heat Conduction Material is made, the heat energy guiding battery core 13 heating element produced by this heating film 17, battery core 13 is heated.
Fig. 2 shows heating film 17 and a kind of perspective view of battery core 13 in mobile terminal, for convenience of description, illustrate only the part relevant to the embodiment of the present invention.As Fig. 2, heating film 17 is provided with two stitch, comprises power supply stitch 171 and ground stitch 172.When battery core 13 being snapped in the battery core groove of mobile terminal, and under the state that described battery core 13 engages with the battery core groove of described mobile terminal, altogether, the power supply stitch 171 of described heating film 17 meets the fire end HT of described heater circuit 16 for the ground stitch 172 of described heating film 17 and described heater circuit 16.Described heating element is electrically connected with heater circuit 16 by two stitch (comprising power supply stitch 171 and ground stitch 172) that heating film 17 is arranged, heater circuit 16 is that described heating element exports the signal of telecommunication by its fire end HT, makes heating element that heater circuit 16 is converted to heat energy to the electric energy that its signal of telecommunication exported is contained.
As the embodiment of the present invention one embodiment, described heating element comprises any one or its combination of following element: the resistance wire 17 of metal-oxide-semiconductor, large resistance.
If described heating element comprises metal-oxide-semiconductor, comprise N-type metal-oxide-semiconductor for described heating element, the drain and gate of described N-type metal-oxide-semiconductor connects the power supply stitch 171 of described heating film 17 simultaneously, and the source electrode of described N-type metal-oxide-semiconductor connects the ground stitch 172 of described heating film 17; Heater circuit 16 is that described heating element exports the signal of telecommunication by its fire end HT, and the conducting of described N-type metal-oxide-semiconductor is also generated heat, and namely by the N-type metal-oxide-semiconductor of conducting, electric energy contained for this signal of telecommunication is converted to heat energy.Comprise P type metal-oxide-semiconductor for described heating element, the source electrode of described P type metal-oxide-semiconductor and grid connect the ground stitch 172 of described heating film 17 simultaneously, and the drain electrode of described P type metal-oxide-semiconductor connects the power supply stitch 171 of described heating film 17; Heater circuit 16 is that described heating element exports the signal of telecommunication by its fire end HT, and described P type metal-oxide-semiconductor conducting is also generated heat, and namely by the P type metal-oxide-semiconductor of conducting, electric energy contained for this signal of telecommunication is converted to heat energy.
If described heating element comprises the resistance wire 173 of large resistance, see Fig. 3, the two ends correspondence of the resistance wire 173 of this large resistance connects power supply stitch 171 and the ground stitch 172 of described heating film 17; Heater circuit 16 is that described heating element exports the signal of telecommunication by its fire end HT, and the resistance wire 173 of the described large resistance of energising generates heat, and electric energy contained for this signal of telecommunication is converted to heat energy.
As preferred enforcement case row of embodiment, see Fig. 3, the resistance wire 173 of described large resistance is to be located at described heating film 17 in the roundabout mode of complications.Like this, when resistance wire 173 heating power of described large resistance, the heat energy that the resistance wire 173 of described large resistance produces can lead the surface of described battery core 13 by described heating film 17 fifty-fifty, the surface of battery core 13 is on average heated, avoid battery core 13 to affect the accumulate performance of battery core 13 because of lasting local heating, avoid causing because of local heating battery core 13 to be damaged and even explode.
Fig. 4 shows the structure composed of the charging circuit that the embodiment of the present invention provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.
As one embodiment of the present invention, see Fig. 4, described charging circuit also comprises control circuit 11, and described control circuit 11 is electrically connected with described heater circuit 16; Described heater circuit 16 is electrically connected with described charging inlet 15 and described heating element respectively.In the preferred embodiment, whether described heater circuit 16 charging inlet 15 and the electrical connection of described heating element described in conducting, is determined by control circuit 11; Such as, when described heater circuit 16 receives the heating instructions of control circuit 11 transmission, the electrical connection of charging inlet 15 and described heating element described in the conducting of described heater circuit 16; When described heater circuit 16 receives the halt instruction of control circuit 11 transmission, described heater circuit 16 disconnects the electrical connection of described charging inlet 15 and described heating element.
Described heater circuit 16, for when receiving the heating instructions that described control circuit 11 exports, the electrical connection of charging inlet 15 and described heating element described in conducting; Described heating element, during specifically for the electrical connection of charging inlet at described charging inlet 15 external charge equipment and described in described heater circuit 16 conducting 15 with described heating element, the electric energy inputted from described charging inlet 15 is converted to heat energy, described heating film 17 is heated described battery core 13 with described heat energy.
In the preferred embodiment, after described heater circuit 16 receives the electrical connection of charging inlet 15 described in heating instructions conducting that described control circuit 11 exports and described heating element, if when having the charging inlet of charging device to be connected with the charging inlet 15 of mobile terminal, charging device by the charging inlet 15 of mobile terminal, heater circuit 16 to this heating elements, make this heating element that the electric energy that charging device exports to it is converted to heat energy, and by heating film 17 heat conduction to heat battery core 13.
Fig. 5 shows the physical circuit of described heater circuit 16, for convenience of description, illustrate only the part relevant to the embodiment of the present invention.
As an embodiment of this preferred embodiment, see Fig. 5, described heater circuit 16 has feeder ear VBUS, fire end HT and the 3rd controlled end CTL3; The described feeder ear VBUS of described heater circuit 16, described fire end HT and described 3rd controlled end CTL3 correspondence connect described charging inlet 15, described heating film 17 and described control circuit 11; When described heater circuit 16 receives from described 3rd controlled end CTL3 the heating instructions exported by described control circuit 11, the electrical connection of feeder ear VBUS described in conducting and described fire end HT;
Described heater circuit 16 specifically comprises: the 11 resistance R11, the 12 resistance R12, the 13 resistance R13, the 11 NPN type triode Q11 and the 12 P type metal-oxide-semiconductor Q12;
The first end of described 11 resistance R11 is the 3rd controlled end CTL3 of described heater circuit 16, source electrode and the drain electrode of described 12 P type metal-oxide-semiconductor Q12 correspond to the described feeder ear VBUS of described heater circuit 16 and described fire end HT, the second end ground connection of described 11 resistance R11, the first end of the 11 resistance R11 described in second termination of described 12 resistance R12, the base stage of described 11 NPN type triode Q11, collector and emitter correspondence connects the first end of described 12 resistance R12, the grid of described 12 P type metal-oxide-semiconductor Q12 and ground, the first end of described 13 resistance R13 and the second end correspondence connect source electrode and the grid of described 12 P type metal-oxide-semiconductor Q12.
Particularly, when the charging inlet of charging device is connected with the charging inlet 15 of mobile terminal, the operation principle of the described heater circuit 16 that this embodiment provides is as follows:
The signal of telecommunication that described heater circuit 16 is inputted from the charging inlet 15 of mobile terminal by described feeder ear VBUS reception charging device; When described heater circuit 16 receives the heating instructions of the high potential that control circuit 11 exports from the 3rd controlled end CTL3, described 11 NPN type triode Q11 conducting, the grid of described 12 P type metal-oxide-semiconductor Q12 is pulled down to electronegative potential, described 12 P type metal-oxide-semiconductor Q12 conducting, the i.e. electrical connection conducting of described feeder ear VBUS and described fire end HT, also namely the charging inlet 15 of described mobile terminal is electrically connected with the power supply stitch 171 of described heating film 17, and specifically the power line of charging inlet 15 is electrically connected with the power supply stitch 171 of described heating film 17.
The one that Fig. 6 shows the charging circuit that the embodiment of the present invention provides optimizes structure composed, for convenience of description, illustrate only the part relevant to the embodiment of the present invention.
As a kind of embodiment of this preferred embodiment, see Fig. 6, described charging circuit also comprises temperature sensing circuit 14 and fills charging circuit 12 soon; The described charging circuit 12 that fills soon is connected electrically between described charging inlet 15 and described battery core 13, and described control circuit 11 fills charging circuit 12 soon with described respectively and described temperature sensing circuit 14 is electrically connected.
See Fig. 6, for the temperature sensing circuit 14 that described charging circuit comprises, described temperature sensing circuit 14 for: the temperature detecting described battery core 13, exports described temperature to described control circuit 11.
In this embodiment, described temperature sensing circuit 14 detects the temperature of described battery core 13 in real time, and the temperature detected is exported to described control circuit 11 in real time.It should be noted that, this embodiment, to the particular circuit configurations of described temperature sensing circuit 14, does not limit at this, as long as described temperature sensing circuit 14 can detect the temperature of described battery core 13 in real time.
As the concrete case study on implementation of this embodiment one, described temperature sensing circuit 14 comprises temperature sensor, this temperature sensor is attached at the surface of described battery core 13, and described temperature sensing circuit 14 detects the temperature of described battery core 13 in real time by this temperature sensor.
As the concrete case study on implementation of this embodiment one, described temperature sensing circuit 14 comprises thermistor (such as positive temperature coefficient thermistor (PTC), such as negative temperature coefficient thermistor (NTC) again), this thermistor is attached at the surface of described battery core 13, and described temperature sensing circuit 14 detects the temperature of described battery core 13 in real time by this thermistor.
See Fig. 6, for the control circuit 11 that described charging circuit comprises, described control circuit 11 for: export described heating instructions lower than during the first temperature to described heater circuit 16 in described temperature, also for exporting and fill instruction soon greater than or equal to during described first temperature to the described charging circuit 12 that fills soon in described temperature.
In this embodiment, after described control circuit 11 works on power, the temperature (this temperature is: temperature detected when described temperature sensing circuit 14 detects the temperature of described battery core 13) that temperature sensing circuit 14 described in real-time reception exports.
If charging device is connected with the charging inlet 15 of mobile terminal, described control circuit 11 judges that whether temperature that described temperature sensing circuit 14 exports is higher than described first temperature.If the temperature that described temperature sensing circuit 14 exports is greater than or equal to described first temperature, described control circuit 11 exports describedly fill instruction soon to the described charging circuit 12 that fills soon, and the described charging circuit 12 that fills soon is charged to described battery core 13 with the first electric current by described charging inlet 15.
If the temperature that described temperature sensing circuit 14 exports, higher than lower than described first temperature, exports heating instructions to described heater circuit 16; Described heater circuit 16 exports the signal of telecommunication to the heating element in described heating film 17 immediately, makes heating element generates heat to be heated described battery core 13 by heating film 17; Until described control circuit 11 exports describedly fill instruction soon to the described charging circuit 12 that fills soon when the temperature of battery core 13 reaches described first temperature.
Preferably, described control circuit 11 is made up of the controller and peripheral circuit thereof with data-handling capacity.
Preferably, described first temperature is 10 degrees Celsius; Described first electric current is be more than or equal to the electric current of 3 amperes.
See Fig. 6, what comprise for described charging circuit fills charging circuit 12 soon, described fill soon charging circuit 12 for: receive described fill instruction soon time, described battery core 13 is charged with the first electric current by described charging inlet 15.
In this embodiment, fast mold filling formula supported by the described charging circuit 12 that fills soon, but whether the described charging circuit 12 that fills soon enters fast mold filling formula, is determined by described control circuit 11.
When described fill soon charging circuit 12 receive described control circuit 11 export fill instruction soon time, enter this fast mold filling formula; The described charging inlet 15 that charging device comprises through mobile terminal successively and describedly fill charging circuit 12 soon, charges to described battery core 13 with described first electric current (such as: the electric current being more than or equal to 3 amperes).
As this preferred embodiment one execution mode, described control circuit 11 also for: judge that when charging device is powered on to described control circuit 11 by described charging inlet 15 whether the temperature of that described temperature sensing circuit 14 exports, described battery core 13 is lower than described first temperature, if the temperature of described battery core 13 is lower than described first temperature, then export described heating instructions to described heater circuit 16.
In the present embodiment, the battery core 13 of mobile terminal needs charging, and the electricity of described battery core 13 is not enough to Drive and Control Circuit 11 and works on power.When charging device is connected (such as: charging inlet 15 grafting of the charging inlet of this charging device and this mobile terminal) with described mobile terminal, charging device is powered by charging inlet 15 pairs of control circuits 11 of mobile terminal, and this control circuit 11 works on power; The control circuit 11 worked on power, the temperature (temperature detected when described temperature sensing circuit 14 detects the temperature of described battery core 13) that real-time reception exports from described temperature sensing circuit 14, judge that whether temperature that described temperature sensing circuit 14 exports is lower than described first temperature, if the temperature of described battery core 13 is lower than described first temperature, then export described heating instructions to described heater circuit 16; If the temperature of described battery core 13 is greater than or equal to described first temperature, then export describedly fill instruction soon to the described charging circuit 12 that fills soon, the described charging circuit 12 that fills soon is charged to described battery core 13 with the first electric current by described charging inlet 15.
In the present embodiment, the charging inlet 15 comprised due to described mobile terminal is electrically connected with heater circuit 16, this heater circuit 16 directly receives the signal of telecommunication from charging device by this charging inlet 15, and the heating element of this signal of telecommunication to heating film 17 is exported, make described heating element that the electric energy that this signal of telecommunication is loaded with is converted to heat energy, the heating film 17 of heat conduction heats described battery core 13 with this heat energy.
As this preferred embodiment one execution mode, described control circuit 11 also for: described temperature sensing circuit 14 export, the temperature of described battery core 13 reach the 3rd temperature time, export halt instruction to described heater circuit 16.Accordingly, described heater circuit 16 also for: when receiving described halt instruction, disconnect the electrical connection of described charging inlet and described heating element.
In the present embodiment, for the temperature (temperature detected when described temperature sensing circuit 14 detects the temperature of described battery core 13) that described control circuit 11 receives from described temperature sensing circuit 14 in real time, not only judge that whether described temperature is lower than described first temperature, also judge that whether described temperature is higher than described 3rd temperature, if described temperature is higher than described 3rd temperature, the temperature representing battery core 13 is too high, can not normally charge to battery core 13, described control circuit 11 exports described halt instruction to described heater circuit 16 in time; Described heater circuit 16, when receiving described halt instruction, disconnects the electrical connection of the charging inlet of described mobile terminal and the power supply stitch 171 of heating film 17, stops, by this power supply stitch 171 pairs of heating elements, namely stopping heating battery core 13.
As a case study on implementation of this embodiment, described 3rd temperature is set to 45 degrees Celsius.
As this preferred embodiment one embodiment, described control circuit 11 also for: described temperature greater than or equal to described second temperature and described temperature export lower than during described first temperature generally fill instruction to the described charging circuit 12 that fills soon, export and stop filling instruction lower than during described second temperature to the described charging circuit 12 that fills soon in described temperature.
In the present embodiment, the temperature (this temperature is: temperature detected when described temperature sensing circuit 14 detects the temperature of described battery core 13) that temperature sensing circuit 14 described in described control circuit 11 real-time reception exports, judge that whether described temperature is lower than described first temperature, also judge that whether described temperature is lower than described second temperature; If described temperature greater than or equal to described second temperature and described temperature lower than described first temperature, the temperature representing battery core 13 is not suitable for large current charge (such as, be not suitable for charging to battery core 13 with the first electric current), then export generally fill instruction to the described charging circuit 12 that fills soon; If described temperature is lower than described second temperature, the temperature representing battery core 13 is too low, cannot charge to battery core 13, then to described fill soon charging circuit 12 export stop filling instruction.
As a case study on implementation of present embodiment, described first temperature be from 0 degree Celsius to 10 degrees Celsius an experimentally data temperature value determining or artificially determine.
For filling charging circuit 12 soon described in present embodiment, also for: receive described general fill instruction time, charged to described battery core 13 with the second electric current by described charging inlet 15, described second electric current is less than described first electric current; Also for when stopping described in receiving to fill instruction, disconnect the charge circuit described battery core 13 charged by described charging inlet 15.
In the present embodiment, fill charging circuit 12 soon to receive describedly generally fill instruction if described, charging device successively through the charging inlet 15 of mobile terminal and fill soon charging circuit 12 pairs of battery cores 13 charge time, the described charging circuit 12 that fills soon is only supported to charge to battery core 13 with described second electric current.
As the concrete case study on implementation of present embodiment one, described second electric current is the current value lower than described first electric current.Preferably, described second electric current is the electric current lower than 3 amperes, and even described second electric current is the electric current of micromicroampere level.
Fig. 7 shows another the optimization structure composed of the charging circuit that the embodiment of the present invention provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.
As the embodiment of the present invention one execution mode, described in present embodiment, fill charging circuit 12 soon, see Fig. 7, comprise main charging circuit 121; The described charging circuit 12 that fills soon also comprises one or more auxiliary charging circuit 122.
In the present embodiment, need charge to the battery core 13 of mobile terminal, charging device all can be charged by the charging inlet 15 of mobile terminal and main charging circuit 121 pairs of battery cores 13.If need to carry out large current charge to battery core 13, the described charging circuit 12 that fills soon, according to filling instruction (what exported by control circuit 11 fills instruction soon) soon, is communicated with described charging inlet 15 and the described charging path filling auxiliary charging circuit 122 pairs of battery cores 13 that instruction is specified soon; Auxiliary charging circuit 122 that instruction specifies is filled soon for multiple if described, charging device successively through described charging inlet 15 that mobile terminal comprises and described fill soon auxiliary charging circuit 122 that instruction specifies described battery core 13 is charged time, described to fill the multiple auxiliary charging circuit 122 that instruction specifies soon be in parallel, and the mode of multiple auxiliary charging circuit 122 parallel connection when charging to battery core 13 effectively can improve the charging current to battery core 13.
What deserves to be explained is, charging device is when the charging inlet 15 of mobile terminal and main charging circuit 121 pairs of battery cores 13 charge, and control circuit 11 adjustable flows through the charging current of main charging circuit 121.In addition, control circuit 11 also can control conducting or the shutoff of main charging circuit 121, the charge circuit charged by main charging circuit 121 pairs of battery cores 13 with conducting or shutoff.
See Fig. 7, describedly fill charging circuit 12 soon, specifically for receive described general fill instruction time, be communicated with the electric pathway of described charging inlet 15, described main charging circuit 121 and described battery core 13 successively, with described second electric current, described battery core 13 charged through described charging inlet 15 and described main charging circuit 121 successively.
In the present embodiment, the described charging circuit 12 that fills soon has general mold filling formula and fast mold filling formula; When described fill soon charging circuit 12 receive control circuit 11 export described general fill instruction time, enter general mode, charge by means of only main charging circuit 121 pairs of battery cores 13.
Particularly, described fill that charging circuit 12 receives that control circuit 11 exports soon described general when filling instruction, be communicated with the electric pathway of described charging inlet 15, described main charging circuit 121 and described battery core 13, the described charging inlet 15 that charging device is comprised by mobile terminal successively and described main charging circuit 121 pairs of battery cores 13 are charged, and the charging current of charging to battery core 13 is described second electric current.
See Fig. 7, describedly fill charging circuit 12 soon, also specifically for receive described fill instruction soon time, be communicated with described charging inlet 15 successively, the electric pathway of described main charging circuit 121 and described battery core 13, through described charging inlet 15 and described main charging circuit 121, described battery core 13 is charged successively, and be communicated with described charging inlet 15 successively, the described electric pathway filling auxiliary charging circuit 122 that instruction specifies and described battery core 13 soon, successively through described charging inlet 15 with describedly fill the auxiliary charging circuit 122 that instruction specifies soon and charge to described battery core 13, describedly fill auxiliary charging circuit 122 that instruction specifies soon for one or more.
In the present embodiment, when described fill soon charging circuit 12 receive control circuit 11 export described fill instruction soon time, enter fast mold filling formula, not only charged by main charging circuit 121 pairs of battery cores 13, also fill auxiliary charging circuit 122 pairs of battery cores 13 that instruction specifies soon charge by described simultaneously.
Particularly, described fill that charging circuit 12 receives that control circuit 11 exports soon described when filling instruction soon, be communicated with the electric pathway of described charging inlet 15, described main charging circuit 121 and described battery core 13, the described charging inlet 15 that charging device is comprised by mobile terminal successively and described main charging circuit 121 pairs of battery cores 13 are charged; Meanwhile, be communicated with described charging inlet 15, the described electric pathway filling auxiliary charging circuit 122 that instruction specifies and described battery core 13 soon, the described charging inlet 15 that charging device is comprised by mobile terminal successively and describedly fill auxiliary charging circuit 122 pairs of battery cores 13 that instruction specifies soon and charge; What deserves to be explained is, describedly fill auxiliary charging circuit 122 that instruction specifies soon for multiple, at described charging inlet 15, describedly fill in auxiliary charging circuit 122 that instruction specifies and the electric pathway that described battery core 13 is formed soon, it is described that to fill the multiple auxiliary charging circuit 122 that instruction specifies soon be in parallel, like this, the mode of multiple auxiliary charging circuit 122 parallel connection effectively can improve the charging current to battery core 13.
As present embodiment one case study on implementation, described auxiliary charging circuit 122 is charging chip.
In the implementation case, control circuit 11 can control charging chip (auxiliary charging circuit 122), adjusts the charging current of charging to battery core through described charging chip.Control circuit 11 also can control conducting or the shutoff of charging chip, the charge circuit charged to battery core by charging chip (auxiliary charging circuit 122) with conducting or shutoff.
Preferably, described main charging circuit 121 is also charging chip.
As present embodiment one case study on implementation, described auxiliary charging circuit 122 has the first controlled end CTL1, the second controlled end CTL2, battery core end V2 and charging end V1, described battery core end V2 is electrically connected with described battery core 13, described charging end V1 is electrically connected with described charging inlet 15, and described first controlled end CTL1 and described second controlled end CTL2 is electrically connected with described control circuit 11 respectively;
Described auxiliary charging circuit 122, specifically for receive from described first controlled end CTL1 described fill instruction soon time, charging end V1 described in conducting and described battery core end V2;
Described auxiliary charging circuit 122, time also specifically for receiving described open command from described second controlled end CTL2, disconnect the electrical connection of described charging end V1 and described battery core end V2, described open command is exported by described control circuit 11.
In the implementation case, control circuit 11 exports fill instruction soon to the described charging circuit 12 that fills soon, be specially: control circuit 11 can send and describedly fill instruction soon by one or more described auxiliary charging circuit 122, and receiving the described auxiliary charging circuit 122 filling instruction is soon the described auxiliary charging circuit 122 filling instruction soon and specify.
Particularly, for the described each auxiliary charging circuit 122 filling instruction soon and specify, described auxiliary charging circuit 122 from described first controlled end CTL1 receive described fill instruction soon time, charging end V1 described in conducting and described battery core end V2, charging device can be charged through the described charging inlet 15 that comprised by mobile terminal and described auxiliary charging circuit 122 pairs of battery cores 13 successively.
Another in the implementation case, when not needing to be charged by certain auxiliary charging circuit 122 pairs of battery cores 13, described control circuit 11 can export described open command to this auxiliary charging circuit 122; When this auxiliary charging circuit 122 receives described open command from described second controlled end CTL2, disconnect the electrical connection of described charging end V1 and described battery core end V2, namely disconnect the charge circuit charged by this auxiliary charging circuit 122 pairs of battery cores 13, stop being charged by this auxiliary charging circuit 122 pairs of battery cores 13.
Fig. 8 shows a kind of physical circuit of auxiliary charging circuit 122, for convenience of description, illustrate only the part relevant to the embodiment of the present invention.
Preferably, see Fig. 8, described auxiliary charging circuit 122 comprises: the first electric capacity C1, the second electric capacity C2, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first Schottky diode D1, the second Schottky diode D2, the 3rd Schottky diode D3, NPN type triode Q1 and switch module;
The first end of described first resistance R1, second end of described switch module, the first end of described first electric capacity C1 and second end of described first resistance R1 are the battery core end V2 of described auxiliary charging circuit 122 respectively accordingly, charging end V1, first controlled end CTL1 and the second controlled end CTL2, the first end of described second resistance R2 and the second end are corresponding respectively connects described second end of the first resistance R1 and the base stage of described NPN type triode Q1, the anode of described 3rd Schottky diode D3 and negative electrode connect emitter and the ground of described NPN type triode Q1 respectively accordingly, the anode of described first Schottky diode D1 and negative electrode connect the first end of described first resistance R1 and second end of described first electric capacity C1 respectively accordingly, the first end of described second Schottky diode D2 and the second end connect second end of described first electric capacity C1 and the first end of described 3rd resistance R3 respectively accordingly, the first end of described second electric capacity C2 and the second end connect negative electrode and the ground of described second Schottky diode D2 respectively accordingly, the first end of described 4th resistance R4 connects first end and the ground of described 3rd resistance R3 respectively accordingly, the collector electrode of described NPN type triode Q1 connects second end of described 3rd resistance R3, second end of described switch module and controlled end connect the first end of described first resistance R1 and second end of described 3rd resistance R3 respectively accordingly.
In a particular application, when auxiliary charging circuit 122 from the first controlled end CTL1 receive fill instruction (what have the high potential of rising edge fills instruction soon) soon time, the controlled end of described switch module also receives the signal of telecommunication of high potential; Then, second end of described switch module and first end electric connection, form described charging end V1 through the electric pathway of switch module to described battery core end V2, and then the battery core 13 that the signal of telecommunication accessed from the charging inlet 15 of mobile terminal can be passed through auxiliary charging circuit 122 pairs of mobile terminals is charged; Then, the bleeder circuit formed by the first Schottky diode D1, the second Schottky diode D2, the 3rd resistance R3 and the 4th resistance R4, continues the controlled end of described switch module to be set to high potential.
When auxiliary charging circuit 122 receives the open command of the high potential that control circuit 11 exports from the second controlled end CTL2, NPN type triode Q1 conducting, then the controlled end of described switch module receives the signal of telecommunication of electronegative potential, electrical connection between second end of cut-off switch module and first end, thus disconnect the electric pathway of charging end V1 to battery core end V2, stop the charging of the battery core 13 through auxiliary charging circuit 122 pairs of mobile terminals.
Preferred further, described switch module comprises: the first switch chip U1 and second switch chip U2; The grid pin G2 of the source electrode pin S1 of described first switch chip U1, the source electrode pin S2 of second switch chip U2 and second switch chip U2 be the second end of described switch module, first end and controlled end respectively accordingly, the grid pin G1 of described first switch chip U1 and drain electrode pin D1 respectively with the grid pin G2 of described second switch chip U2 with drain that pin D2 is corresponding to connect.
Particularly, when the controlled end of switch module receives the signal of telecommunication of high potential, the grid pin G1 of the first switch chip U1 and the grid pin G2 of second switch chip U2 also receives the signal of telecommunication of high potential simultaneously, and then the source electrode pin S1 of described first switch chip U1 electrically conducts with drain electrode pin D1, the source electrode pin S2 of described second switch chip U2 electrically conducts with drain electrode pin D2, and then first switch chip U1 source electrode pin S1 and the source electrode pin S2 of second switch chip U2 form electric pathway, the first end of switch module and the second end electric connection.
On the contrary, when the controlled end of switch module receives the signal of telecommunication of electronegative potential, the grid pin G1 of the first switch chip U1 and the grid pin G2 of second switch chip U2 also receives the signal of telecommunication of electronegative potential simultaneously, and then the source electrode pin S1 of described first switch chip U1 can not electrically conduct with drain electrode pin D1, the source electrode pin S2 of described second switch chip U2 can not electrically conduct with drain electrode pin D2, and then first switch chip U1 source electrode pin S1 and the source electrode pin S2 of second switch chip U2 can not form electric pathway, the first end of cut-off switch module and the electrical connection of the second end; Can not charge through the battery core 13 of auxiliary charging circuit 122 pairs of mobile terminals.
As the embodiment of the present invention one embodiment, described charging inlet comprises: P power line and Q ground wire; Wherein, described P is greater than 1, and described Q is greater than 1.
In this embodiment, the mobile terminal of prior art only has MICRO USB interface, this MICRO USB interface only comprises a power line and a ground wire, therefore only can carry out low current charge (charging current is generally milliampere level) to the battery core 13 of mobile terminal by this MICRO USB interface; Relative to existing MICROUSB interface, the mobile terminal that this embodiment provides, the power line that the charging inlet 15 that it has comprises is at least two, and the ground wire that the charging inlet 15 that it has comprises also is at least two.Like this, when charging device is charged by charging inlet 15 pairs of battery cores 13 that this embodiment provides, charge circuit can be formed through multiple power line and multiple ground wire simultaneously, effectively can improve the charging current of charging through this charging inlet 15 pairs of battery cores 13.
It should be noted that, the battery core that the embodiment of the present invention provides and the charging circuit that the embodiment of the present invention provides are suitable for mutually.
The embodiment of the present invention provides a kind of battery core, and described battery core comprises heating film; Described heating film, for converting electrical energy into heat energy, heats described battery core with described heat energy.
In the embodiment of the present invention one embodiment, in described heating film, be provided with heating element;
Described heating element, for converting electrical energy into heat energy, makes described heat energy heat described battery core.
Preferably, described heating element comprises the resistance wire of large resistance, and the resistance wire of described large resistance is to be located at described heating film in the roundabout mode of complications.
The embodiment of the present invention provides a kind of mobile terminal, and described mobile terminal comprises battery core, and described mobile terminal also comprises above-mentioned charging circuit, and described charging circuit is electrically connected with battery core.
The foregoing is only the preferred embodiment of the present invention, be not limited to the present invention, all do within principle of the present invention any amendment, equivalent to replace and improvement etc., all should be included within the scope of protection of the invention.
Claims (16)
1. a charging circuit, is characterized in that, described charging circuit comprises heater circuit, and under the state that battery core engages with battery core groove, described heater circuit is electrically connected with heating film, and described heating Membrane cover is affixed on described battery core;
Described heating film, is converted to heat energy for the electric energy exported by described heater circuit, heats described battery core with described heat energy.
2. charging circuit as claimed in claim 1, it is characterized in that, be provided with heating element in described heating film, under the state that described battery core engages with described battery core groove, described heater circuit is electrically connected with described heating element;
Described heating element, is converted to heat energy for the electric energy exported by described heater circuit, and described heat energy is heated described battery core.
3. charging circuit as claimed in claim 2, it is characterized in that, described heating element comprises the resistance wire of large resistance, and the resistance wire of described large resistance is to be located at described heating film in the roundabout mode of complications.
4. charging circuit as claimed in claim 2, it is characterized in that, described charging circuit also comprises control circuit, and described control circuit is electrically connected with described heater circuit; Described heater circuit is electrically connected with charging inlet and described heating element respectively;
Described heater circuit, for when receiving the heating instructions that described control circuit exports, the electrical connection of charging inlet described in conducting and described heating element;
Described heating element, specifically at described charging inlet external charge equipment and the electrical connection of charging inlet and described heating element described in described heater circuit conducting time, the electric energy inputted from described charging inlet is converted to heat energy, described heating film is heated described battery core with described heat energy.
5. charging circuit as claimed in claim 4, it is characterized in that, described charging circuit also comprises temperature sensing circuit and fills charging circuit soon; The described charging circuit that fills soon is connected electrically between described charging inlet and described battery core, and described control circuit fills charging circuit soon with described respectively and described temperature sensing circuit is electrically connected;
Described temperature sensing circuit, for detecting the temperature of described battery core, exports described temperature to described control circuit;
Described control circuit, for exporting described heating instructions lower than during the first temperature to described heater circuit in described temperature, also for described temperature greater than or equal to during described first temperature to described fill soon charging circuit export fill instruction soon;
Describedly fill charging circuit soon, for receive described fill instruction soon time, described battery core is charged with the first electric current by described charging inlet.
6. charging circuit as claimed in claim 5, it is characterized in that, described control circuit, also for judging that when charging device is powered on to described control circuit by described charging inlet whether the temperature of that described temperature sensing circuit exports, described battery core is lower than described first temperature, if the temperature of described battery core lower than described first temperature, then exports described heating instructions to described heater circuit.
7. charging circuit as claimed in claim 5, is characterized in that, described control circuit, when also reaching the 3rd temperature for the temperature of that export at described temperature sensing circuit, described battery core, exports halt instruction to described heater circuit;
Described heater circuit, also for when receiving described halt instruction, disconnects the electrical connection of described charging inlet and described heating element.
8. charging circuit as claimed in claim 5, it is characterized in that, described charging inlet comprises: P power line and Q ground wire;
Wherein, described P is greater than 1, and described Q is greater than 1.
9. charging circuit as claimed in claim 5, it is characterized in that, described control circuit also for: described temperature greater than or equal to described second temperature and described temperature export lower than during described first temperature generally fill instruction to the described charging circuit that fills soon, export and stop filling instruction lower than during described second temperature to the described charging circuit that fills soon in described temperature;
Describedly fill charging circuit soon, also for receive described general fill instruction time, charged to described battery core with the second electric current by described charging inlet, described second electric current is less than described first electric current; Also for when stopping described in receiving to fill instruction, disconnect the charge circuit described battery core charged by described charging inlet.
10. charging circuit as claimed in claim 9, it is characterized in that, the described charging circuit that fills soon comprises main charging circuit, and the described charging circuit that fills soon also comprises one or more auxiliary charging circuit;
Describedly fill charging circuit soon, specifically for receive described general fill instruction time, be communicated with the electric pathway of described charging inlet, described main charging circuit and described battery core successively, with described second electric current, described battery core charged through described charging inlet and described main charging circuit successively;
Describedly fill charging circuit soon, also specifically for receive described fill instruction soon time, be communicated with the electric pathway of described charging inlet, described main charging circuit and described battery core successively, through described charging inlet and described main charging circuit, described battery core is charged successively, and be communicated with described charging inlet, the described electric pathway filling auxiliary charging circuit that instruction specifies and described battery core soon successively, successively through described charging inlet with describedly fill the auxiliary charging circuit that instruction specifies soon and charge to described battery core, described to fill the auxiliary charging circuit that instruction specifies soon be one or more.
11. charging circuits as claimed in claim 10, it is characterized in that, described auxiliary charging circuit is charging chip.
12. charging circuits as claimed in claim 10, it is characterized in that, described auxiliary charging circuit has the first controlled end, the second controlled end, battery core end and charging end, described battery core end is electrically connected with described battery core, described charging end is electrically connected with described charging inlet, and described first controlled end and described second controlled end are electrically connected with described control circuit respectively;
Described auxiliary charging circuit, specifically for receive from described first controlled end described fill instruction soon time, charging end described in conducting and described battery core end;
Described auxiliary charging circuit, time also specifically for receiving described open command from described second controlled end, disconnect the electrical connection of described charging end and described battery core end, described open command is exported by described control circuit.
13. 1 kinds of mobile terminals, described mobile terminal comprises battery core, it is characterized in that, described mobile terminal also comprises the charging circuit described in any one of claim 1 to 12, and described charging circuit is electrically connected with battery core.
14. 1 kinds of battery cores, is characterized in that, described battery core comprises heating film;
Described heating film, for converting electrical energy into heat energy, heats described battery core with described heat energy.
15. charging circuits as claimed in claim 14, is characterized in that, be provided with heating element in described heating film;
Described heating element, for converting electrical energy into heat energy, makes described heat energy heat described battery core.
16. charging circuits as claimed in claim 15, it is characterized in that, described heating element comprises the resistance wire of large resistance, and the resistance wire of described large resistance is to be located at described heating film in the roundabout mode of complications.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441416.7A CN104242389B (en) | 2014-09-01 | 2014-09-01 | Charging circuit, battery core and mobile terminal |
| PCT/CN2015/070466 WO2016033927A1 (en) | 2014-09-01 | 2015-01-09 | Terminal |
| CN201580004390.2A CN106063072B (en) | 2014-09-01 | 2015-01-09 | Terminal device |
| EP15838468.5A EP3188341A4 (en) | 2014-09-01 | 2015-01-09 | Terminal |
| US15/444,907 US10826309B2 (en) | 2014-09-01 | 2017-02-28 | Terminal, heating apparatus and charging method for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441416.7A CN104242389B (en) | 2014-09-01 | 2014-09-01 | Charging circuit, battery core and mobile terminal |
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| CN104242389A true CN104242389A (en) | 2014-12-24 |
| CN104242389B CN104242389B (en) | 2017-02-01 |
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| CN201410441416.7A Active CN104242389B (en) | 2014-09-01 | 2014-09-01 | Charging circuit, battery core and mobile terminal |
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| CN104242389B (en) | 2017-02-01 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. |