CN205610257U - Mobile terminal's heating control circuit and mobile terminal - Google Patents
Mobile terminal's heating control circuit and mobile terminal Download PDFInfo
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- CN205610257U CN205610257U CN201620248684.1U CN201620248684U CN205610257U CN 205610257 U CN205610257 U CN 205610257U CN 201620248684 U CN201620248684 U CN 201620248684U CN 205610257 U CN205610257 U CN 205610257U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The utility model provides a mobile terminal's heating control circuit and mobile terminal, the lithium cell adopts normal charging current can reduce battery cycle life under low temperature environment among the solution prior art, and present solution is not suitable for mobile terminal's problem. The utility model discloses a heating control circuit includes: control switch, with the heating element that control switch connects, wherein, control switch is in temperature sensor determine arrives when the temperature of battery is less than the default temperature threshold value, get into on -state, and control heating element is right the battery heats, otherwise, control switch gets into off state and control heating element stops rightly the battery heats. This heating control circuit charges at low temperature and heats the battery under the environment to make the battery temperature reach and charge normal the requirement, effectively solved the problem that can not charge normal under the low temperature environment like lithium cell etc. Guaranteed battery charge efficiency and battery cycle life.
Description
Technical field
This utility model relates to electronic technology field, particularly relates to the heating control circuit of a kind of mobile terminal
And mobile terminal.
Background technology
Lithium ion battery has the advantages such as energy density height, memory-less effect, is widely used in every field.
But owing to some characteristics of lithium ion battery limit, make user to the mobile terminal with lithium ion battery
Require stricter when of charging.The most at low ambient temperatures, the activity of lithium ion is the lowest, if adopted
By the charging current (as 0.5C charges) as under room temperature, easily form lithium metal at negative pole graphite deposits,
The cycle life making battery reduces, and expansion rate also can increase.Therefore, for ensureing the cycle life of battery,
Need to reduce charging current at low ambient temperatures during charging, but charging can be brought again after reducing charging current
The increase of deadline.
The method solving the charging of lithium battery low temperature at present generally increases heater at outside batteries, works as detection
Be unsatisfactory for the requirement of lithium cell charging to ambient temperature after, just start external heating device and heat to battery,
Charging is restarted after battery temperature raises.Although this mode can solve the problem that lithium battery to a certain extent
The problem of low temperature charging, but this mode is not suitable for being applied to mobile terminal, and main cause is that mobile terminal belongs to
In portable product, increase heater and can increase the volume of mobile terminal, affect outward appearance.
Utility model content
The purpose of this utility model is to provide heating control circuit and the mobile terminal of a kind of mobile terminal, purport
In solving prior art, lithium battery uses normal charging current can reduce battery cycle life at low ambient temperatures,
And the problem that current solution is not suitable for mobile terminal.
To achieve these goals, this utility model provides the heating control circuit of a kind of mobile terminal, institute
State mobile terminal and include that battery and temperature sensor, described heating control circuit also include:
Control switch；
The heating element heater that switch is connected is controlled with described；
Wherein, in described temperature sensor, the described switch that controls detects that the temperature of described battery is less than presetting temperature
During degree threshold value, enter conducting state, and control described heating element heater described battery is heated, otherwise,
Described control switch enter off state, and control described heating element heater stop described battery is heated.
For solving above-mentioned technical problem, embodiment of the present utility model additionally provides a kind of mobile terminal, including
Battery and temperature sensor, also include: the charging control circuit of mobile terminal as above.
This utility model embodiment has the advantages that
The heating control circuit of this utility model embodiment, controls switch and institute detected in described temperature sensor
When stating the temperature of battery less than preset temperature threshold value, enter conducting state, and control described heating element heater to institute
Stating battery to heat, otherwise, the described switch that controls enters off state, and controls described heating element heater and stop
Only described battery is heated.Battery is heated under low temperature charging environment by this heating control circuit,
So that battery temperature reaches to charge normal requirement, efficiently solving lithium battery etc. such as at low ambient temperatures can not be just
The often problem of charging, it is ensured that battery charge efficiency and battery cycle life；And this control circuit can be the suitableeest
For portable terminal applies environment, terminal volume will not be increased, also do not interfere with outward appearance, improve reality
The property used.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heating control circuit of the mobile terminal of this utility model embodiment；
Fig. 2 is the workflow diagram of structure shown in Fig. 1；
Fig. 3 is the structural representation of this utility model embodiment mobile terminal.
Description of reference numerals:
101-controls switch, 102-heating element heater, 103-battery, 104-charge integrated circuit, 105-flexible electrical
Road plate, 106-terminal shell, 107-battery compartment.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, below will knot
Close specific embodiment and accompanying drawing is described in detail.
The heating control circuit of the mobile terminal of this utility model embodiment and mobile terminal, do not increasing movement
Terminal volume, do not affect outward appearance on the premise of, efficiently solve battery charging at low ambient temperatures and can reduce and follow
The problem in ring life-span, it is ensured that the charge efficiency of battery and service life, has the highest promotional value and reality
By value.
As it is shown in figure 1, the heating control circuit of the mobile terminal of this utility model embodiment, it is applied to mobile
Terminal, this mobile terminal can be specifically smart mobile phone, panel computer/equipment such as PAD, personal computer,
This mobile terminal includes that battery and temperature sensor, above-mentioned heating control circuit include: control switch 101 and
The heating element heater 102 being connected with this control switch 101.
Wherein, at said temperature sensor, above-mentioned control switch 101 detects that the temperature of above-mentioned battery 103 is low
When preset temperature threshold value, enter conducting state, and control above-mentioned heating element heater 102 to above-mentioned battery 103
Heat, otherwise, above-mentioned control switch 101 entrance off state, and control above-mentioned heating element heater 102
Stop above-mentioned battery 103 is heated.
Here, when temperature sensor detects the temperature of battery 103 less than a predetermined threshold value, switch is controlled
101 is in the conduction state, accesses power supply for this heating element heater 102, and is that heating element heater 102 is powered by power supply,
Heating element heater 102 is made to produce heat and be conducted to battery 103, to improve the temperature of battery 103.
It addition, the heat that heating element heater 102 produces can be especially by being arranged at this heating element heater 102 and battery
Heat-conduction component between 103 is conducted to battery.This heating element heater 102 can specially add thermal resistance or by multiple
Add the heating electric resistance array that thermal resistance is constituted；This heat-conduction component may particularly include: heat pipe, PGS (Pyrolytic
Graphite Sheet, graphite heat radiation fin) etc..
The heating control circuit of this utility model embodiment, increases in the inside of mobile terminal and controls switch 101
And heating element heater 102, utilize mobile terminal internal existing temperature sensor that battery is carried out temperature detection, and
When temperature sensor detects the temperature of battery less than a predetermined threshold value, to above-mentioned control switch 101 transmission
One control signal so that control switch 101 in the conduction state according to this control signal, now, heating unit
Part 102 is connected with power supply by this control switch 101, power supply be that heating element heater 102 is powered so that add
Thermal element 102 produces heat and is conducted to battery 103, to improve the temperature of battery 103.This utility model is real
Execute by increasing control switch 101 and heating element heater 102 in example, and utilize this control switch 101, heating unit
Hardware annexation between part 102 and above-mentioned each components and parts and signal transitive relation, efficiently solve such as lithium
The problem that battery etc. can not charge normal at low ambient temperatures, it is ensured that battery charge efficiency and circulating battery longevity
Life；And this control circuit can be effectively applicable to portable terminal applies environment, terminal volume will not be increased,
Do not interfere with outward appearance, improve practicality yet.
Further, in the heating control circuit of this utility model embodiment, can be by an integrated electricity of charging
Heating element heater 102 is charged by road 104 so that heating element heater 102 is being led with charge integrated circuit 104
Time logical, can be electrically charged and produce heat；Concrete, this heating control circuit can also include: with above-mentioned
Control the charge integrated circuit 104 of switch 101 connection；Control switch 101 and battery detected in temperature sensor
When the temperature of 103 is less than preset temperature threshold value, enters conducting state, and control charge integrated circuit 104 for upper
State heating element heater 102 to power so that battery 103 is heated by above-mentioned heating element heater 102, otherwise, on
State control switch 101 entrance off states, and control charge integrated circuit 104 and stop as heating element heater 102
Power supply so that heating element heater 102 stops heating battery 103.
Power for above-mentioned heating element heater 102 at above-mentioned charge integrated circuit 104 so that heating element heater 102 is right
While battery 103 heats, this charge integrated circuit 104 also produces the first current versus cell 103 and enters
Row charging；Stop powering for above-mentioned heating element heater 102 at above-mentioned charge integrated circuit 104 so that heating unit
While part 102 stops heating battery 103, this charge integrated circuit 104 can use the second electricity
Battery 103 is charged by stream；Wherein, the first electric current can be less than the second electric current.
In this utility model embodiment, use the first less current versus cell charging under low temperature environment, simultaneously
Battery is heated by the heat produced by heating element heater 102, and reaches predetermined threshold value in the temperature of battery 103
Time, use the second bigger current versus cell charging, it is ensured that battery charge efficiency and battery cycle life.
As it is shown in figure 1, this charge integrated circuit 104 includes DC-to-dc DC-DC charging IC (Iintegrated
Circuit, integrated circuit).The VBUS (Voltage BUS, voltage bus) of this DC-DC charging IC draws
Foot and input power VinConnect.At input power VinIt is connected with between DC-DC charging IC and has an input electricity
Hold CIN, this input capacitance CINOne end and this input power VinConnect, other end ground connection.This DC-DC
SW (Switch, the switch) pin of charging IC is by an outputting inductance LOPositive pole with battery bag PACK
Voltage VBATConnect.At outputting inductance LOAnd it is also associated with output capacitance C between batteryO1, this output electricity
Hold CO1One end and this outputting inductance LOConnect, other end ground connection.This input capacitance CIN, DC-DC fills
Electricity IC, outputting inductance LOAnd output capacitance CO1Constitute above-mentioned DC-DC charging IC.Fill at DC-DC
This outputting inductance L of electricity ICOAnd it is also associated with control switch 101 and a heating element heater 102 between battery bag,
This control switch 102 can be specially MOSFET pipe Q1, and this heating element heater 102 can specially add thermal resistance,
As being multiple heating electric resistance arrays adding thermal resistance composition, the source electrode of this MOSFET pipe Q1 and heating
One end of electric resistance array connects, the drain electrode of this MOSFET pipe Q1 and output capacitance CO1One end connect.
This MOSFET pipe Q1, heating electric resistance array and DC-DC charging IC form this utility model embodiment
Control circuit.
Here, in order to not increase terminal volume and not affect terminal appearance, detect at said temperature sensor
When the temperature of battery 103 is less than above-mentioned predetermined threshold value, controls the state that switch 101 is on, and pass through
Heating element heater 102 is connected, by this charge integrated circuit by this control switch 101 with charge integrated circuit 104
104 heat for above-mentioned heating element heater 102, so that battery temperature reaches to charge normal requirement.
In another embodiment of the present utility model, heating element heater 102 can also be charged also by battery 103
Producing heat, concrete, in this heating control circuit, above-mentioned control switch 101 is connected with temperature sensor,
In temperature sensor, above-mentioned control switch 101 detects that the temperature of above-mentioned battery 103 is less than preset temperature threshold value
Time, enter conducting state, and control above-mentioned battery 103 and power for above-mentioned heating element heater 102 so that this adds
Battery 103 is heated by thermal element 102, the most above-mentioned control switch 101 entrance off state, and controls
Battery 103 processed stops powering above-mentioned heating element heater 102 so that heating element heater 102 stops battery 103
Heating.
Here, in order to not increase terminal volume and not affect terminal appearance, battery is detected in temperature sensor
When the temperature of 103 is less than predetermined threshold value, controls switch 101 in the conduction state, and switched by this control
Heating element heater 102 is connected by 101 with battery 103, this battery 103 heat for above-mentioned heating element heater 102,
So that battery temperature reaches to charge normal requirement.
In above-described embodiment of the present utility model, in order to not increase terminal volume and not affect terminal appearance, can
By controlling switch 101 unlatching, access battery 103 or the mobile terminal of mobile terminal for heating element heater 102
Interior charge integrated circuit 104, is reached for the purpose of heating element heater 102 heating, this heating control circuit energy
It is effectively applicable to portable terminal applies environment, size of mobile terminals will not be increased, also do not interfere with outward appearance,
Improve practicality.
In the above-described embodiments, above-mentioned heating control circuit can also include: switchs 101 with above-mentioned control respectively
The processor connected with temperature sensor；Detect that the temperature of battery 103 is less than presetting temperature in temperature sensor
During degree threshold value, processor controls above-mentioned control switch 101 entrance conducting state, otherwise, controls above-mentioned control
Switch 101 entrance off state.
Concrete, this processor can be connected with the grid of MOSFET pipe Q1, and processor obtains temperature sensing
After the temperature of the battery 103 that device detects, whether it is less than above-mentioned predetermined threshold value according to the temperature of battery 103,
The control signal being turned on and off to above-mentioned control switch 101 transmission one control this control switch 101, and then
Control whether above-mentioned heating element heater 102 accesses power supply (charge integrated circuit 104 or battery 103), solve
The problem that battery can not charge normal at low ambient temperatures, it is ensured that battery charge efficiency and battery cycle life,
This processor can be specially the central processor CPU of terminal.
Refer to Fig. 2, it illustrates the workflow diagram of structure shown in Fig. 1, including:
Step 201, charger inserts.
Step 202, after charger inserts, processor obtains the temperature of battery.
In this step, processor obtains the temperature of battery, this temperature by the temperature sensor being connected with battery
Sensor can be specially critesistor.
Step 203, it is judged that whether the temperature of battery is less than predetermined threshold value.
In this step, by judging that the temperature of battery, whether more than or equal to predetermined threshold value, can determine whether battery institute
The temperature charging normal requirement whether is met, to avoid low temperature charging to produce by subsequent step in ambient temperature
Problem.
Step 204, if the temperature of battery is greater than or equal to predetermined threshold value, then controls MOSFET pipe Q1 and closes,
Until charging complete.
In this step, after closing MOSFET pipe Q1, use the second bigger current versus cell charging,
To improve charge efficiency.
Step 205, if the temperature of present battery is less than predetermined threshold value, then controls MOSFET pipe Q1 and opens,
Start and add thermal resistance to battery heating.
In this step, control MOSFET pipe Q1 and open as heating element heater access power supply (battery or charging collection
Become circuit), make power supply power for adding thermal resistance, add thermal resistance and produce heat, and by heat-conduction component by heat
Amount is conducted to battery, and starts and add while thermal resistance heats to battery, uses the first less charging current
Charge for battery.
Step 206, continues to judge whether the temperature of battery is less than predetermined threshold value, and when judged result is for being,
Return step 205.
Step 207, when above-mentioned steps 206 judged result is for being, closes MOSFET pipe Q1, until filling
Electricity completes.
Step 208, terminates.
As can be seen from the above analysis, the heating control circuit of application this utility model embodiment, do not increasing
Terminal volume, do not affect outward appearance on the premise of, efficiently solve such as charging meetings at low ambient temperatures such as lithium batteries
Reduce cycle life and the conditional problem of charging current, it is ensured that the charge efficiency of battery and service life,
There is the highest promotional value and practical value.
Embodiment of the present utility model additionally provides a kind of mobile terminal, including battery, temperature sensor and
The heating control circuit of the mobile terminal as described in above-described embodiment.Wherein, above-mentioned mobile terminal add thermal control
The embodiment of circuit processed, all be applicable to the embodiment of this mobile terminal, also can reach identical technique effect.
Further, as it is shown on figure 3, described mobile terminal also includes: be arranged at above-mentioned battery 103 and move
Flexible PCB 105 between the LCD display module LCM of dynamic terminal, it is soft that heating element heater 102 is arranged at this
Property circuit board 105 side surface, and above-mentioned LCM is provided with corresponding to the position of above-mentioned heating element heater 102
Groove, above-mentioned heating element heater 102 is positioned at this groove.
As it is shown on figure 3, the mobile terminal of this utility model embodiment may particularly include: terminal shell 106, should
Being provided with battery compartment 107 in terminal shell 106, battery 103 is arranged in this battery compartment 107；Flexible circuit
Plate 105, this flexible PCB 105 is arranged at the LCD of above-mentioned battery 103 and mobile terminal and shows module LCM
Between, heating element heater 102 is arranged on this flexible PCB 105, and above-mentioned LCM is corresponding to this heating unit
The position of part 102 is provided with groove, and above-mentioned heating element heater 102 is positioned at this groove, and neither impact is mobile eventually
The reliability of end structure, nor affects on the outward appearance of mobile terminal.
The heating control circuit of the mobile terminal of this utility model embodiment and mobile terminal, control switch 101
When temperature sensor detects the temperature of battery 103 less than preset temperature threshold value, enter conducting state, and
Control heating element heater 102 battery 103 is heated, otherwise, control switch 101 entrance off state,
And control heating element heater 102 and stop battery 103 is heated.This heating control circuit is at low temperature charging ring
Under border, battery is heated, so that battery temperature reaches to charge normal requirement, efficiently solve such as lithium battery
Deng the problem that can not charge normal at low ambient temperatures, it is ensured that battery charge efficiency and battery cycle life；
And this control circuit can be effectively applicable to portable terminal applies environment, terminal volume will not be increased, the most not
Outward appearance can be affected, improve practicality.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and each embodiment stresses
Being all the difference with other embodiments, between each embodiment, identical similar part sees mutually.
Although have been described for the preferred embodiment of this utility model embodiment, but those skilled in the art one
Denier knows basic creative concept, then these embodiments can be made other change and amendment.So,
Claims are intended to be construed to include preferred embodiment and fall into the institute of this utility model scope of embodiments
There are change and amendment.
Finally, in addition it is also necessary to explanation, in this article, the relational terms of such as first and second or the like is only
Only be used for by an entity or operation separate with another entity or operating space, and not necessarily require or
Imply relation or the order that there is any this reality between these entities or operation.And, term " includes ",
" comprise " or its any other variant is intended to comprising of nonexcludability, so that include a series of key element
Process, method, article or terminal unit not only include those key elements, but also include the most clearly arranging
Other key elements gone out, or also include intrinsic for this process, method, article or terminal unit
Key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Other identical element is there is also in including the process of described key element, method, article or terminal unit.
Claims (10)
1. a heating control circuit for mobile terminal, described mobile terminal includes battery and temperature sensor,
It is characterized in that, described heating control circuit also includes:
Control switch；
The heating element heater that switch is connected is controlled with described；
Wherein, in described temperature sensor, the described switch that controls detects that the temperature of described battery is less than presetting temperature
During degree threshold value, enter conducting state, and control described heating element heater described battery is heated, otherwise,
Described control switch enter off state, and control described heating element heater stop described battery is heated.
The heating control circuit of mobile terminal the most according to claim 1, it is characterised in that also include:
The charge integrated circuit that switch is connected is controlled with described；
In described temperature sensor, the described switch that controls detects that the temperature of described battery is less than described preset temperature
During threshold value, enter conducting state, and to control described charge integrated circuit be that described heating element heater is powered so that
Described battery is heated by described heating element heater, and otherwise, the described switch that controls enters off state, and controls
Make described charge integrated circuit to stop powering for described heating element heater so that described heating element heater stops described
Battery heats.
The heating control circuit of mobile terminal the most according to claim 1, it is characterised in that described control
System switch is connected with temperature sensor, and the described switch that controls detects described battery in described temperature sensor
Temperature less than described preset temperature threshold value time, enter conducting state, and control described battery be described heating unit
Part is powered so that described battery is heated by described heating element heater, and the most described switch that controls enters shutoff
State, and control described battery stop described heating element heater is powered so that described heating element heater stop to institute
State battery heating.
4. according to the heating control circuit of the mobile terminal described in any one of claim 1-3, it is characterised in that
Also include:
Respectively with the described processor controlling and switching and described temperature sensor is connected；
When described temperature sensor detects the temperature of described battery less than described preset temperature threshold value, described
Processor controls described control switch and enters conducting state, otherwise, controls described control switch entrance and turns off shape
State.
The heating control circuit of mobile terminal the most according to claim 1, it is characterised in that described control
Circuit processed also includes:
It is arranged at the heat-conduction component between described heating element heater and described battery.
The heating control circuit of mobile terminal the most according to claim 5, it is characterised in that described heat
Transport element includes heat pipe or graphite heat radiation fin PGS.
The heating control circuit of mobile terminal the most according to claim 1, it is characterised in that described in add
Thermal element for adding thermal resistance, described in add one end of thermal resistance and be connected with the described switch that controls, described in add thermal resistance
Other end ground connection.
The heating control circuit of mobile terminal the most according to claim 1, it is characterised in that described control
Switch processed includes a metal oxide semiconductor field effect transistor MOSFET pipe.
9. a mobile terminal, including battery and temperature sensor, it is characterised in that also include: such as right
The heating control circuit of requirement mobile terminal described in any one of 1-8.
Mobile terminal the most according to claim 9, it is characterised in that described mobile terminal also includes:
It is arranged at the flexible PCB between the LCD display module LCM of described battery and described mobile terminal, institute
State heating element heater and be arranged at the surface of described flexible PCB side, and described LCM is corresponding to described heating unit
The position of part is provided with groove, and described heating element heater is positioned at described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620248684.1U CN205610257U (en) | 2016-03-29 | 2016-03-29 | Mobile terminal's heating control circuit and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620248684.1U CN205610257U (en) | 2016-03-29 | 2016-03-29 | Mobile terminal's heating control circuit and mobile terminal |
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| CN205610257U true CN205610257U (en) | 2016-09-28 |
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| CN201620248684.1U Active CN205610257U (en) | 2016-03-29 | 2016-03-29 | Mobile terminal's heating control circuit and mobile terminal |
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| CN107104489A (en) * | 2017-06-15 | 2017-08-29 | 广东欧珀移动通信有限公司 | Protective case, signal processing method suitable for mobile terminal |
| CN107181859A (en) * | 2017-04-14 | 2017-09-19 | 北京小米移动软件有限公司 | Temprature control method and device |
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| CN113113962A (en) * | 2021-04-14 | 2021-07-13 | 杭州海康威视数字技术股份有限公司 | Photovoltaic charging device |
| CN114128928A (en) * | 2021-11-10 | 2022-03-04 | 深圳麦时科技有限公司 | Heating assembly, control method of heating assembly and electronic atomization device |
| CN114268086A (en) * | 2021-11-29 | 2022-04-01 | 海鹰企业集团有限责任公司 | Working circuit system and method of industrial chip in ultralow temperature environment |
| CN114268086B (en) * | 2021-11-29 | 2024-03-26 | 海鹰企业集团有限责任公司 | Working circuit system and method of industrial-grade chip in ultralow temperature environment |
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