CN106026264A - Terminal short circuit protection method and device - Google Patents
Terminal short circuit protection method and device Download PDFInfo
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- CN106026264A CN106026264A CN201610474895.1A CN201610474895A CN106026264A CN 106026264 A CN106026264 A CN 106026264A CN 201610474895 A CN201610474895 A CN 201610474895A CN 106026264 A CN106026264 A CN 106026264A
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- 230000004224 protection Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 230000005611 electricity Effects 0.000 claims description 21
- 238000012360 testing method Methods 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 16
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 81
- 230000001276 controlling effect Effects 0.000 description 15
- 238000002485 combustion reaction Methods 0.000 description 9
- 230000002045 lasting effect Effects 0.000 description 9
- 230000002269 spontaneous effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 6
- 230000002596 correlated effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
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- 230000009977 dual effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H02J7/0088—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a terminal short circuit protection method and a device. At least one first electronic component which is in a system of a terminal and is relevant to charging and discharging is equipped with a corresponding rapid temperature response device, and at least one electronic control component of the system of the terminal corresponding to the first electronic component is connected with a signal generation device corresponding to the rapid temperature response device. The method comprises steps that an interruption signal sent by the signal generation device is received by the electronic control component, the interruption signal is generated by the signal generation device when detection temperature of at least one rapid temperature response device reaches a corresponding set threshold, and circuits related to a power source are cut off. Through the method and the device, the circuits related to the power source can be cut off through the electronic control component after the temperature of the electronic component rises to the set threshold because of short circuit, the terminal can be prevented from being damaged by continuous energy, and safety of the terminal is improved.
Description
Technical field
It relates to intelligent terminal's technical field, particularly relate to the method and device of terminal short circuit protection.
Background technology
Along with the development of intelligent terminal's technology, terminal is not only a communication tool, it is also possible to carry out it
His application, such as: carry out web page browsing, multimedia, instant messaging etc..So, terminal
It is commonly used, thus terminal also can be frequently charged or discharge.
Terminal may cause spontaneous combustion because some micro-short circuit occur when charge or discharge, blast, electricity
The event such as hit occurs, and therefore, is badly in need of carrying out terminal short-circuit protection, improves the safety of terminal.
Summary of the invention
Disclosure embodiment provides the method and device of terminal short circuit protection.Described technical scheme is as follows:
First aspect according to disclosure embodiment, it is provided that the method for a kind of terminal short circuit protection, described end
It is mounted with corresponding fast temperature at least one first electronic component relevant to discharge and recharge in the system of end
The control electricity that in response device, and the system of described terminal, at least one is corresponding with described first electronic component
The signal generating device that sub-element is corresponding with described fast temperature response device connects, and described method comprises the steps that
Described control electronic component receives the interrupt signal that described signal generating device sends, wherein, described
Interrupt signal is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value
Time, described signal generating device generates；
Cut off the circuit relevant to power supply.
Visible, the circuit relevant to discharge and recharge is mounted with fast temperature response device, so, once
At charge and discharge process, terminal there occurs that micro-short circuit, the temperature of fast temperature response units test can arrive correspondence
Setting threshold value, thus, control electronic component can receive the signal being connected with fast temperature response device
The interrupt signal that generating device sends, and cut off the circuit relevant to power supply, from without there being lasting energy
Terminal is destroyed by amount, reduces the event odds such as spontaneous combustion, blast, electric shock, improves terminal
Safety.
In one embodiment, described first electronic component includes: battery, charger, terminal charge connect
In mouth element or motherboard circuit element one.
Visible, the electronic component relevant to discharge and recharge has multiple, can carry out short-circuit protection in many aspects,
Improve the safety of terminal further.
In one embodiment, the circuit that described cut-out is relevant to power supply includes:
When described control electronic component is the power management chip corresponding with described motherboard circuit element, control
Make the switch that described motherboard circuit element is connected with described battery to open, cut off described motherboard circuit element with
The connection of described battery；
When described control electronic component is the charger control chip corresponding with described charger, close institute
State the output of charger；
When described control electronic component is the battery protection chip corresponding with described battery, control with described
The analog circuit switch that battery connects is opened, and cuts off the output of described battery.
Certainly, control electronic component different, cut off the most different from the circuit that power supply is correlated with, each control electricity
Sub-element all can cut off the circuit relevant to power supply, further increases the safety of terminal.
In one embodiment, described fast temperature response device includes:
In temperature sensor, NTC thermistor or thermocouple one.
Visible, the type of fast temperature response device is also diversified, can apply different scene,
Make phone protection process more flexible.
In one embodiment, after the circuit that described cut-out is relevant to power supply, also include:
The load current of described first electronic component that detection is corresponding；
When the described load current detected is less than the setting electric current of correspondence, recover described relevant to power supply
Circuit.
Visible, by the inspection of load current, the circuit relevant to power supply can be recovered, so, reduce
Because high temperature or other factors cause the probability of short circuit erroneous judgement, improve the accuracy rate of short-circuit protection further.
In one embodiment, before circuit relevant to power supply described in described recovery, also include:
By the fast temperature response device on described first electronic component, described first electricity that detection is corresponding
The temperature of sub-element；
When the described temperature of detection is less than when setting threshold value, recover the described circuit relevant to power supply.
Certainly, the circuit relevant to power supply can be recovered, not only carry under the duplicate protection of electric current and temperature
The accuracy rate of high short-circuit protection, also ensure that the use safety of electronic component simultaneously.
In one embodiment, the circuit relevant to power supply described in described recovery includes:
When described control electronic component is the charger control chip corresponding with described charger, open institute
State the output of charger；
When described control electronic component is the battery protection chip corresponding with described battery, control with described
The analog circuit switch Guan Bi that battery connects, recovers the output of described battery.
Visible, different control electronic component, the process recovering the circuit relevant from power supply is also different,
So, the circuit that electronic component all can recover relevant to power supply is controlled, it is ensured that the normal use of terminal,
Improve the experience of user.
Second aspect according to disclosure embodiment, it is provided that the device of a kind of terminal short circuit protection, described end
It is mounted with corresponding fast temperature at least one first electronic component relevant to discharge and recharge in the system of end
The control electricity that in response device, and the system of described terminal, at least one is corresponding with described first electronic component
The signal generating device that sub-element is corresponding with described fast temperature response device connects, and described device is applied to
In described control electronic component, this device comprises the steps that
Receiver module, for receive described signal generating device send interrupt signal, wherein, described in
Break signal is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value,
Described signal generating device generates；
Cut off module, for cutting off the circuit relevant to power supply.
Visible, the circuit relevant to discharge and recharge is mounted with fast temperature response device, so, once
At charge and discharge process, terminal there occurs that micro-short circuit, the temperature of fast temperature response units test can arrive correspondence
Setting threshold value, thus, control electronic component can receive the signal being connected with fast temperature response device
The interrupt signal that generating device sends, and cut off the circuit relevant to power supply, from without there being lasting energy
Terminal is destroyed by amount, reduces the event odds such as spontaneous combustion, blast, electric shock, improves terminal
Safety.
In one embodiment, described cut-out module includes:
First cuts off submodule, is used for when described control electronic component is corresponding with described motherboard circuit element
Power management chip time, control the switch that described motherboard circuit element is connected with described battery and open, cut
Disconnected described motherboard circuit element and the connection of described battery；
Second cuts off submodule, is used for when described control electronic component is the charging corresponding with described charger
During device control chip, close the output of described charger；
3rd cuts off submodule, is used for when described control electronic component is that the battery corresponding with described battery is protected
When protecting chip, the analog circuit switch controlling to be connected with described battery is opened, and cuts off the output of described battery.
Certainly, control electronic component different, cut off the most different from the circuit that power supply is correlated with, each control electricity
Sub-element all can cut off the circuit relevant to power supply, further increases the safety of terminal.
In one embodiment, described device may also include that
First detection module, for detecting the load current of described first electronic component of correspondence；
First judge module, during for being less than the setting electric current of correspondence when the described load current detected,
Call recovery module；
Recover module, for recovering the described circuit relevant to power supply.
Visible, by the inspection of load current, the circuit relevant to power supply can be recovered, so, reduce
Because high temperature or other factors cause the probability of short circuit erroneous judgement, improve the accuracy rate of short-circuit protection further.
In one embodiment, described device may also include that
Second detection module, is connected with described first judge module, for by described first electronic component
On fast temperature response device, the temperature of described first electronic component that detection is corresponding；
Second judge module, for when the described temperature of detection is less than when setting threshold value, calling described recovery
Module.
Certainly, the circuit relevant to power supply can be recovered, not only carry under the duplicate protection of electric current and temperature
The accuracy rate of high short-circuit protection, also ensure that the use safety of electronic component simultaneously.
In one embodiment, described recovery module comprises the steps that
First recovers submodule, is used for when described control electronic component is the charging corresponding with described charger
During device control chip, open the output of described charger；
Second recovers submodule, is used for when described control electronic component is that the battery corresponding with described battery is protected
When protecting chip, control the analog circuit switch Guan Bi being connected with described battery, recover the output of described battery.
Visible, different control electronic component, the process recovering the circuit relevant from power supply is also different,
So, the circuit that electronic component all can recover relevant to power supply is controlled, it is ensured that the normal use of terminal,
Improve the experience of user.
The third aspect according to disclosure embodiment, it is provided that the device of a kind of terminal short circuit protection, for eventually
In end system, including:
First electronic component relevant to discharge and recharge, and the control electricity corresponding with described first electronic component
Sub-element；Wherein,
The fast temperature response device of correspondence it is mounted with at least one described electronic component；
The signal generator being connected with each fast temperature response device；
At least one controls electronic component and is connected with described signal generating device；
Described control electronic component receives the interrupt signal that described signal generating device sends, wherein, described
Terminal signaling is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value
Time, described signal generating device generates；
Described control electronic component cuts off the circuit relevant to power supply.
Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect:
In technique scheme, the circuit relevant to discharge and recharge is mounted with fast temperature response device,
So, once terminal there occurs micro-short circuit, the temperature of fast temperature response units test at charge and discharge process
The setting threshold value of correspondence can be arrived, thus, control electronic component and can receive and fast temperature response device
The interrupt signal that the signal generating device connected sends, and cut off the circuit relevant to power supply, from without
There is lasting energy that terminal is destroyed, reduce the event odds such as spontaneous combustion, blast, electric shock,
Improve the safety of terminal.
It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe
, the disclosure can not be limited.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet these public affairs
The embodiment opened, and for explaining the principle of the disclosure together with description.
Fig. 1 is the flow chart according to the terminal short circuit guard method shown in an exemplary embodiment.
Fig. 2 is the terminal system schematic diagram protected according to the terminal short circuit shown in an exemplary embodiment one.
Fig. 3 is the flow chart according to the terminal short circuit guard method shown in an exemplary embodiment one.
Fig. 4 is the terminal system schematic diagram protected according to the terminal short circuit shown in an exemplary embodiment two.
Fig. 5 is the flow chart according to the terminal short circuit guard method shown in an exemplary embodiment two.
Fig. 6 is the block diagram according to the terminal short circuit protection device shown in an exemplary embodiment.
Fig. 7 is the block diagram according to the terminal short circuit protection device shown in an exemplary embodiment three.
Fig. 8 is the block diagram according to the terminal short circuit protection device shown in an exemplary embodiment four.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Following retouches
Stating when relating to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous and wants
Element.Embodiment described in following exemplary embodiment does not represent own consistent with the disclosure
Embodiment.On the contrary, they only with as appended claims describes in detail, the disclosure some
The example of the apparatus and method that aspect is consistent.
In disclosure embodiment, terminal and charger can form the terminal system of a discharge and recharge, i.e. terminal
System includes: terminal, charger.Certainly, terminal has the concrete electronics unit relevant to discharge and recharge
Part, and charger also has the concrete electronic component relevant to discharge and recharge.Here, in the system of terminal
The electronic component relevant to discharge and recharge that is first electronic component, wherein, the first electronic component includes: battery,
In charger, terminal charge interface element or motherboard circuit element one.I.e. the system of terminal is wrapped
Include multiple first electronics unit such as battery, charger, terminal charge interface element and motherboard circuit element
Part.Equally, terminal system also has the control electronic component corresponding with the first electronic component.Such as: the
One electronic component includes: in battery, charger, terminal charge interface element or motherboard circuit element
One.So control electronic component to include: the power management chip corresponding with motherboard circuit element, and fill
The charger control chip that electrical equipment is corresponding, or in the battery protection chip corresponding with battery.
Therefore, in disclosure embodiment, the system of terminal discharge and recharge, i.e. terminal system include: battery, fill
Electrical equipment, terminal charge interface element, motherboard circuit element, power management chip, charger control chip,
Battery protection chip etc..
The technical scheme that disclosure embodiment provides, can carry out some and change, it is achieved short circuit the system of terminal
Protection.Wherein, first electronic component relevant to discharge and recharge is mounted with fast temperature response device,
So, once terminal there occurs micro-short circuit, the temperature of fast temperature response units test at charge and discharge process
The setting threshold value of correspondence can be arrived, thus, control electronic component and can receive and fast temperature response device
The interrupt signal that the signal generating device connected sends, and cut off the circuit relevant to power supply, from without
There is lasting energy that terminal is destroyed, reduce the event odds such as spontaneous combustion, blast, electric shock,
Improve the safety of terminal.
The system of terminal is changed comprising the steps that in these first electronic components have one, two or many
The individual fast temperature response device being mounted with correspondence, is i.e. mounted with correspondence at least one first electronic component
Fast temperature response device.Such as: in the system of terminal, it is mounted with temperature sensor in the battery,
Or, battery and charger have been respectively mounted the temperature sensor of correspondence, or, pacify in the battery
Fill temperature sensor, charger has been mounted with NTC thermistor, and in motherboard circuit element
Being mounted with thermocouple etc., here, fast temperature response device includes: temperature sensor, NTC temperature-sensitive
In resistance or thermocouple one.
Further, each fast temperature response device is connected with signal generating device, and has one, two,
Or multiple control electronic component is connected with signal generating device.Such as: power management chip occurs with signal
Device connects, or, power management chip and charger control chip are connected with signal generating device respectively,
Or, power management chip, charger control chip and battery protection chip occur with signal the most respectively
Device connects.
Therefore, terminal system includes: the first electronic component relevant to discharge and recharge, and with the first electronics
The control electronic component that element is corresponding；Wherein, at least one electronic component is mounted with the quick temperature of correspondence
Degree response device；The signal generator being connected with each fast temperature response device；At least one controls electricity
Sub-element is connected with signal generating device.Such as: in terminal system, battery, charger, terminal charge
Interface element and motherboard circuit element be separately installed with a fast temperature response device, each quickly
Temperature-responsive device is connected with signal generator, and only corresponding with charger charger control chip with
Signal generator connects.Or, in terminal system, battery and charger are separately installed with a quick temperature
Degree responsor, each fast temperature response device is connected with signal generator, and fill corresponding with charger
Electrical equipment control chip, and the battery protection chip corresponding with battery be all connected with signal generator.Or,
In terminal system, battery, charger and motherboard circuit element are separately installed with a fast temperature
Responsor, each fast temperature response device is connected with signal generator, and corresponding with motherboard circuit element
Power management chip, the charger control chip corresponding with charger, and the battery corresponding with battery
Protection chip is all connected with signal generator.
After having carried out terminal system changing, terminal can be carried out short-circuit protection.
Fig. 1 is the flow chart according to the terminal short circuit guard method shown in an exemplary embodiment, such as Fig. 1
Shown in, comprise the following steps S101-S102:
In step S101, receive the interrupt signal that signal generating device sends, wherein, interrupt signal
It is that signal is sent out when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value
Raw device generation.
In disclosure embodiment, control electronic component and be connected with signal generating device, such as: at power supply pipe
Reason chip increases one-wire interface, is connected with signal generator by one-wire interface, or, respectively at electricity
Source control chip, charger control chip and battery protection chip increase one-wire interface, so, logical
Cross one-wire interface, power management chip, charger control chip and battery protection chip respectively with signal
Generator connects.
Thus, control electronic component and can receive the signal that signal generating device sends.
Terminal system is when discharge and recharge, it is possible that micro-short circuit, so, first relevant to discharge and recharge
Electronic component will cause temperature to raise because electric current is excessive, here, owing to having on the first electronic component
Fast temperature response device is installed, thus, when there being the fast temperature response on first electronic component
When the temperature of units test arrives corresponding setting threshold value, determine the micro-short circuit event that has been likely to occur, now,
The signal generator being connected with fast temperature response device will generate interrupt signal.Certainly, if two or
The temperature of the fast temperature response units test on multiple first electronic components arrives separately at the setting threshold of correspondence
During value, then can improve the probability being determined to be micro-short circuit event, now, signal generator also can generate
Interrupt signal.Wherein, owing to micro-short circuit event generation can cause the first electronic component temperature quickly to raise,
Therefore, it is necessary to install fast temperature response device, such as temperature sensor, NTC on the first electronic component
Critesistor or thermocouple.Therefore, fast temperature response device comprises the steps that temperature sensor, NTC
In critesistor or thermocouple one.
So, by controlling the connection between electronic component, signal generating device is to controlling electronic component
Send interrupt signal, thus, control electronic component and receive the interrupt signal that signal generating device sends.When
So, the control electronic component being connected with signal generating device may have multiple, thus signal generating device is sent out
The time sending interrupt signal is also not necessarily simultaneously, can be with pre-set priority, such as, first issues charger
Control chip, then issue power management chip, it is then issued to battery protection chip etc..Certainly, can basis
Size to terminal destructive power carrys out the priority of default control electronic component, or presets control according to other
The priority of electronic component processed.
In step s 102, the circuit relevant to power supply is cut off.
The disclosure implement in, control electronic component be probably power management chip, charger control chip or
Battery protection chip etc..Each control electronic component cuts off the process not necessarily phase of the circuit relevant to power supply
With, including: when controlling electronic component and being the power management chip corresponding with motherboard circuit element, control
The switch that motherboard circuit element is connected with battery is opened, and cuts off the connection of motherboard circuit element and battery；When
When control electronic component is the charger control chip corresponding with charger, the output of charge closing device；When
When control electronic component is the battery protection chip corresponding with battery, control the analog circuit being connected with battery
Switch is opened, and cuts off the output of battery.
Owing to there being one, two or more control electronic components are connected with signal generating device, then, connect
The control electronic component receiving interrupt signal will carry out the behaviour of the corresponding cut-out circuit relevant to power supply
Make.So, cut off the power supply of terminal part circuit or whole circuit, for terminal part circuit or
The whole circuit of person, does not has lasting energy to carry out circuit damage, protects the circuit that terminal system is corresponding,
Improve the safety of terminal.
Such as: after charger control chip receives interrupt signal, the output of charge closing device, so,
Charger will not provide electric current as terminal.After power management chip receives interrupt signal, control mainboard
The switch that component is connected with battery is opened, and cuts off the connection of motherboard circuit element and battery.Battery is protected
Protecting after chip receives interrupt signal, the analog circuit controlling to be connected with battery switchs to be opened, cut-out battery
Output.
Visible, first electronic component relevant to discharge and recharge is mounted with fast temperature response device, this
Sample, once terminal there occurs micro-short circuit at charge and discharge process, the temperature meeting of fast temperature response units test
Arrive corresponding setting threshold value, thus, control electronic component and can receive with fast temperature response device even
The interrupt signal that the signal generating device connect sends, and cut off the circuit relevant to power supply, from without having
Terminal is destroyed by lasting energy, reduces the event odds such as spontaneous combustion, blast, electric shock, carries
The high safety of terminal.
In disclosure embodiment, when having exceeded the setting threshold value of correspondence due to the temperature of the first electronic component,
Will make to control element and cut off the circuit relevant to power supply.But once failture evacuation or other reasons,
Some controls the circuit that electronic component also needs to recover relevant to power supply.
Therefore, in the disclosure one embodiment, after cutting off the circuit relevant to power supply, also include: detection
The load current of the first corresponding electronic component；When the load current detected is less than corresponding setting electric current
Time, recover the circuit relevant to power supply.Such as: charger control chip or battery protection chip detect
When load current is less than corresponding setting electric current, then be likely not to have and short circuit event occurs, now, recover
The circuit relevant to power supply.Visible, by the inspection of load current, the electricity relevant to power supply can be recovered
Road, so, decreases because high temperature or other factors cause the probability of short circuit erroneous judgement, improves short circuit further
The accuracy rate of protection.
Certainly, although detect that load current is less than the setting electric current of correspondence, but first electronic component
Temperature may be the highest, if recovering power circuit, the first electronic component may be caused to break down,
Therefore, in the disclosure one embodiment, before recovering the circuit relevant to power supply, also include: by first
Fast temperature response device on electronic component, the temperature of the first electronic component that detection is corresponding；Work as detection
Temperature less than set threshold value time, recover the circuit relevant to power supply.So, can be in electric current and temperature
Under duplicate protection, recover the circuit relevant to power supply, not only improve the accuracy rate of short-circuit protection, the most also
Ensure that the use safety of electronic component.
Certainly, control electronic component different, recover the circuitry processes relevant to power supply and also differ, including:
When controlling electronic component and being the charger control chip corresponding with charger, open the output of charger；
When controlling electronic component and being the battery protection chip corresponding with battery, control the simulation electricity being connected with battery
Way switch closes, and recovers the output of battery.
Visible, different control electronic component, the process recovering the circuit relevant from power supply is also different,
So, the circuit that electronic component all can recover relevant to power supply is controlled, it is ensured that the normal use of terminal,
Improve the experience of user.
Below by operating process set to specific embodiment, illustrate the side that disclosure embodiment provides
Method.
Embodiment one, in the present embodiment, is provided with temperature sensor, temperature in charger in terminal system
Sensor is connected with signal generating device, and the charger control chip corresponding with charger is also sent out with signal
Raw device connects.
Fig. 2 is the terminal system schematic diagram protected according to the terminal short circuit shown in an exemplary embodiment one, as
Shown in Fig. 2, terminal system includes: charger 2100 and terminal 2200, and wherein, charger 2100 is equipped with temperature
Degree sensor 2110, and charger control chip 2120.And have signal generating device in terminal 2200
2210.Temperature sensor 2110, and charger control chip 2120 is all with signal generating device 2210 even
Connect.
Fig. 3 is the flow chart according to the terminal short circuit guard method shown in an exemplary embodiment one, such as Fig. 3
Shown in, comprise the following steps S301-S302:
In step S301, charger control chip receives the interrupt signal that signal generating device sends,
Wherein, when interrupt signal is the setting threshold value of temperature arrival correspondence of the temperature sensor in charger, letter
Number generating device generates.
In step s 302, the output of charger control chip charge closing device.
Here, after the output of charger control chip charge closing device, do not have electric current can be input to terminal,
Protect terminal, improve the safety of terminal.
In embodiment two, the present embodiment, in terminal system in battery, charger and motherboard circuit respectively
Being provided with temperature sensor, each temperature sensor is connected with signal generating device, and corresponding with battery
Battery protection chip, the charger control chip corresponding with charger, corresponding with motherboard circuit element
Power management chip is connected with signal generator the most respectively.
Fig. 4 is the terminal system schematic diagram protected according to the terminal short circuit shown in an exemplary embodiment two, as
Shown in Fig. 4, terminal system includes: charger 4100 and terminal 4200, and wherein, charger 4100 is equipped with temperature
Degree sensor 4110, and charger control chip 4120.And have signal generating device in terminal 4200
4210, battery 4220, motherboard circuit element 4230.And on battery 4220, have temperature sensor 4221 and electricity
Pond protection chip 4222, motherboard circuit element 4230 has temperature sensor 4231 and power management chip
4232。
Wherein, each temperature sensor is connected with signal generating device 4210.And charger control chip
4120, battery protection chip 4222 and power management chip 4232 the most respectively with signal generating device 4210
Connect.
Fig. 5 is the flow chart according to the terminal short circuit guard method shown in an exemplary embodiment two, such as Fig. 5
Shown in, comprise the following steps S501-S509:
In step S501, signal generating device receives the overtemperature letter that at least one temperature sensor sends
Number, and generate interrupt signal, wherein, overtemperature signal is temperature sensor detection place the first electronic component
Temperature transmission when arriving corresponding settings threshold value.
Here, the first electronic component includes: battery, charger or motherboard circuit element.I.e. battery, fill
It is corresponding that electrical equipment detects that with any one or more temperature sensor in motherboard circuit element temperature arrives
Setting threshold value constantly, this temperature sensor sends overtemperature signal to signal generating device, thus, signal is sent out
Raw device generation interrupt signal.
In step S502, signal generating device respectively to charger control chip, battery protection chip with
And power management chip sends interrupt signal.
Here, can according to default delay time respectively to charger control chip, battery protection chip with
And power management chip sends interrupt signal, wherein, the delay time corresponding with charger control chip is little
In the delay time corresponding with power management chip, and the delay time corresponding with power management chip is less than
The delay time corresponding with battery protection chip.
In step S503, after charger control chip receives interrupt signal, control chip charge closing
The output of device, proceeds in step S506.
In step S504, after power management chip receives interrupt signal, control motherboard circuit element with
The switch that battery connects is opened, and cuts off the connection of motherboard circuit element and battery.
In step S505, after battery protection chip receives interrupt signal, control the mould being connected with battery
Intend contactor to open, cut off the output of battery, and proceed to step S508.
Here, interrupt owing to charger control chip, battery protection chip and power management chip receive
The time of signal is different, and the time therefore performed also differs, and these three step can be with parallel processing.
In step S506, charger control chip judges that whether the load current of charger is less than correspondence
Set electric current？If so, perform step S507, otherwise, return step S503.
Here, current detecting can be carried out, improve short circuit event odds further.If
Load current more than or equal to corresponding setting electric current, then may have occurred short circuit event, needs
Return step S503, relevant circuit of cutting off the electricity supply, if load current is less than corresponding setting electric current, then
May be the too high intensification caused of ambient temperature, therefore, step S507 need to be performed.
In step s 507, charger control chip opens the output of charger.
Owing to being likely not to have the event of being short-circuited, then charger control chip recovers the circuit relevant to power supply,
I.e. charger control chip opens the output of charger.So, the probability of erroneous judgement is reduced so that terminal
Can normally use, improve the experience of user.
In step S508, battery protection chip judges that whether the load current of battery is less than corresponding setting
Electric current？If so, perform step S509, otherwise, return step S505.
Equally, current detecting can be carried out, improve short circuit event odds further.If
Load current more than or equal to corresponding setting electric current, then may have occurred short circuit event, needs
Return step S505, relevant circuit of cutting off the electricity supply, if load current is less than corresponding setting electric current, then
May be the too high intensification caused of ambient temperature, therefore, step S509 need to be performed.
In step S509, battery protection chip controls the analog circuit switch Guan Bi being connected with battery,
Recover the output of battery.
Equally, battery protection chip recovers the circuit relevant to power supply.
Visible, in the present embodiment, the circuit relevant to discharge and recharge is mounted with fast temperature response device,
So, once terminal there occurs micro-short circuit, the temperature of fast temperature response units test at charge and discharge process
The setting threshold value of correspondence can be arrived, thus, control electronic component and can receive and fast temperature response device
The interrupt signal that the signal generating device connected sends, and cut off the circuit relevant to power supply, from without
There is lasting energy that terminal is destroyed, reduce the event odds such as spontaneous combustion, blast, electric shock,
Improve the safety of terminal.Further, by the inspection of load current, can recover relevant to power supply
Circuit, so, decreases because high temperature or other factors cause the probability of short circuit erroneous judgement, improves short further
The accuracy rate of road protection.
Following for disclosure device embodiment, may be used for performing method of disclosure embodiment.
Fig. 6 is the block diagram according to the terminal short circuit protection device shown in an exemplary embodiment, and this device can
With by software, hardware or both be implemented in combination with become the some or all of of electronic equipment.Terminal
System in be mounted with that corresponding fast temperature rings at least one first electronic component relevant to discharge and recharge
Answer the control electronic component that in device, and the system of terminal, at least one is corresponding with the first electronic component with fast
The signal generating device that speed temperature-responsive device is corresponding connects, and device is applied to control in electronic component.As
Shown in Fig. 6, this terminal short circuit protection device includes: receiver module 610 and cut-out module 620.Wherein,
Receiver module 610, be configured to receive signal generating device send interrupt signal, wherein, in
Break signal is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value,
Signal generating device generates.
Cut off module 620, be configured to cut off the circuit relevant to power supply.
Visible, the circuit relevant to discharge and recharge is mounted with fast temperature response device, so, once
At charge and discharge process, terminal there occurs that micro-short circuit, the temperature of fast temperature response units test can arrive correspondence
Setting threshold value, thus, control electronic component can receive the signal being connected with fast temperature response device
The interrupt signal that generating device sends, and cut off the circuit relevant to power supply, from without there being lasting energy
Terminal is destroyed by amount, reduces the event odds such as spontaneous combustion, blast, electric shock, improves terminal
Safety.
In one embodiment of the disclosure, cut off module 620 and include:
First cuts off submodule, and being configured as controlling electronic component is the electricity corresponding with motherboard circuit element
During source control chip, the switch that control motherboard circuit element is connected with battery is opened, and cuts off motherboard circuit unit
Part and the connection of battery.
Second cuts off submodule, and being configured as controlling electronic component is the charger control corresponding with charger
During coremaking sheet, the output of charge closing device.
3rd cuts off submodule, and being configured as controlling electronic component is the battery protection core corresponding with battery
During sheet, the analog circuit switch controlling to be connected with battery is opened, and cuts off the output of battery.
Certainly, control electronic component different, cut off the most different from the circuit that power supply is correlated with, each control electricity
Sub-element all can cut off the circuit relevant to power supply, further increases the safety of terminal.
In one embodiment of the disclosure, device may also include that
First detection module, is configured to the load current of the first electronic component corresponding to detection.
First judge module, when the load current being configured as detecting is less than corresponding setting electric current,
Call recovery module.
Recover module, be configured to recover the circuit relevant to power supply.
Visible, by the inspection of load current, the circuit relevant to power supply can be recovered, so, reduce
Because high temperature or other factors cause the probability of short circuit erroneous judgement, improve the accuracy rate of short-circuit protection further.
In one embodiment of the disclosure, device may also include that
Second detection module, is connected with the first judge module, is configured on the first electronic component
Fast temperature response device, the temperature of the first electronic component that detection is corresponding.
Second judge module, the temperature being configured as detecting, less than when setting threshold value, calls recovery module.
Certainly, the circuit relevant to power supply can be recovered, not only carry under the duplicate protection of electric current and temperature
The accuracy rate of high short-circuit protection, also ensure that the use safety of electronic component simultaneously.
In one embodiment of the disclosure, recover module and comprise the steps that
First recovers submodule, and being configured as controlling electronic component is the charger control corresponding with charger
During coremaking sheet, open the output of charger.
Second recovers submodule, and being configured as controlling electronic component is the battery protection core corresponding with battery
During sheet, control the analog circuit switch Guan Bi being connected with battery, recover the output of battery.
Visible, different control electronic component, the process recovering the circuit relevant from power supply is also different,
So, the circuit that electronic component all can recover relevant to power supply is controlled, it is ensured that the normal use of terminal,
Improve the experience of user.
Below by operating process set to specific embodiment, illustrate the dress that disclosure embodiment provides
Put.
Embodiment three, Fig. 7 is the frame according to the terminal short circuit protection device shown in an exemplary embodiment three
Figure, this device is applied in the power management chip of terminal system, in terminal system, mainboard
Have on component temperature sensor, temperature sensor and power management chip respectively with signal generator
Part connects.As it is shown in fig. 7, this device includes: receiver module 610 and cut-out module 620.Wherein,
Cut off module 620 and also include the first cut-out submodule 621.
In the present embodiment, receiver module 610 receive signal generating device send interrupt signal, wherein, in
Break signal is that signal generating device is raw when the temperature of temperature sensor detection arrives corresponding setting threshold value
Become.
That cuts off that the in module 620 first cut-out submodule 621 controls that motherboard circuit element is connected with battery opens
Pass is opened, and cuts off the connection of motherboard circuit element and battery.
Visible, in the present embodiment, the terminal short circuit protection device in power management chip can work as motherboard circuit
Component temperature raises when arriving setting threshold value, cuts off the connection of motherboard circuit element and battery, to mainboard electricity
Circuit component is protected, and improves the safety of terminal.
Embodiment four, Fig. 8 is the frame according to the terminal short circuit protection device shown in an exemplary embodiment four
Figure, this device is applied in the charger control chip of terminal system, has temperature in terminal system on charger
Degree sensor, and temperature sensor is all connected with signal generating device with charger control chip.Such as Fig. 8
Shown in, this device includes: receiver module 610, cuts off module 620, first detection module 630, first sentence
Disconnected module 640, the second detection module 650, the second judge module 660 and recovery module 670, wherein,
Cut off module 620 and include the second cut-out submodule 622, and recover module 670 and include the first recovery submodule
671。
In the present embodiment, receiver module 610 receive signal generating device send interrupt signal, wherein, in
Break signal is that signal generating device is raw when the temperature of temperature sensor detection arrives corresponding setting threshold value
Become.
Cut off second in module 620 and cut off the output of submodule 622 charge closing device.
And after the output of charge closing device, first detection module 630 detects the load electricity of the charger of correspondence
Stream, the first judge module 640 determines when the load current detected is less than corresponding setting electric current, the second inspection
Survey module 650 by temperature sensor, the temperature of the charger that detection is corresponding；So, the second judge module
660 determine that the temperature of detection, less than when setting threshold value, calls recovery module 670.
And recover the first recovery submodule 671 in module 670 and open the output of charger, recover and power supply
Relevant circuit.
Visible, in the present embodiment, the short-circuit protection in charger control chip can be carried out according to temperature
The cut-out of the circuit relevant to power supply, protects terminal, at the same time it can also be electric current and the dual guarantor of temperature
Protect down, recover the circuit relevant to power supply, not only improve the accuracy rate of short-circuit protection, also ensure that simultaneously
The use safety of electronic component.
Disclosure embodiment provides the device of a kind of terminal short circuit protection, in terminal system, including:
First electronic component relevant to discharge and recharge, and the control electronics unit corresponding with the first electronic component
Part；Wherein,
The fast temperature response device of correspondence it is mounted with at least one electronic component；
The signal generator being connected with each fast temperature response device；
At least one controls electronic component and is connected with signal generating device；
Controlling electronic component and receive the interrupt signal that signal generating device sends, wherein, terminal signaling is to work as
When the temperature of at least one fast temperature response units test arrives corresponding setting threshold value, signal generator
Part generates；
Control electronic component and cut off the circuit relevant to power supply.
Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect:
The technique scheme of offer is provided, the circuit relevant to discharge and recharge is mounted with
Fast temperature response device, so, once terminal there occurs micro-short circuit, fast temperature at charge and discharge process
The temperature of response units test can arrive the setting threshold value of correspondence, thus, controlling electronic component can receive
The interrupt signal that the signal generating device being connected with fast temperature response device sends, and cut off and power supply phase
The circuit closed, from without there being lasting energy to destroy terminal, reduces spontaneous combustion, blast, electric shock
Etc. event odds, improve the safety of terminal.
Those skilled in the art, after considering description and putting into practice disclosure disclosed herein, will readily occur to this
Other embodiment disclosed.The application is intended to any modification, purposes or the adaptability of the disclosure
Change, these modification, purposes or adaptations are followed the general principle of the disclosure and include these public affairs
Open undocumented common knowledge in the art or conventional techniques means.Description and embodiments only by
Being considered as exemplary, the true scope of the disclosure and spirit are pointed out by claim below.
It should be appreciated that the disclosure be not limited to described above and illustrated in the accompanying drawings accurately
Structure, and various modifications and changes can carried out without departing from the scope.The scope of the present disclosure is only by institute
Attached claim limits.
Claims (13)
1. the method for a terminal short circuit protection, it is characterised in that with discharge and recharge in the system of described terminal
The fast temperature response device of correspondence, and described end it is mounted with at least one relevant first electronic component
At least one control electronic component corresponding with described first electronic component and described quick temperature in the system of end
The signal generating device that degree response device is corresponding connects, and described method includes:
Described control electronic component receives the interrupt signal that described signal generating device sends, wherein, described
Interrupt signal is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value
Time, described signal generating device generates；
Cut off the circuit relevant to power supply.
2. the method for claim 1, it is characterised in that described first electronic component includes: electricity
In pond, charger, terminal charge interface element or motherboard circuit element one.
3. method as claimed in claim 2, it is characterised in that the circuit that described cut-out is relevant to power supply
Including:
When described control electronic component is the power management chip corresponding with described motherboard circuit element, control
Make the switch that described motherboard circuit element is connected with described battery to open, cut off described motherboard circuit element with
The connection of described battery；
When described control electronic component is the charger control chip corresponding with described charger, close institute
State the output of charger；
When described control electronic component is the battery protection chip corresponding with described battery, control with described
The analog circuit switch that battery connects is opened, and cuts off the output of described battery.
4. the method for claim 1, it is characterised in that described fast temperature response device includes:
In temperature sensor, NTC thermistor or thermocouple one.
5. the method for claim 1, it is characterised in that the circuit that described cut-out is relevant to power supply
Afterwards, also include:
The load current of described first electronic component that detection is corresponding；
When the described load current detected is less than the setting electric current of correspondence, recover described relevant to power supply
Circuit.
6. method as claimed in claim 5, it is characterised in that relevant to power supply described in described recovery
Before circuit, also include:
By the fast temperature response device on described first electronic component, described first electricity that detection is corresponding
The temperature of sub-element；
When the described temperature of detection is less than when setting threshold value, recover the described circuit relevant to power supply.
7. the method as described in claim 5 or 6, it is characterised in that with power supply phase described in described recovery
The circuit closed includes:
When described control electronic component is the charger control chip corresponding with described charger, open institute
State the output of charger；
When described control electronic component is the battery protection chip corresponding with described battery, control with described
The analog circuit switch Guan Bi that battery connects, recovers the output of described battery.
8. the device of a terminal short circuit protection, it is characterised in that with discharge and recharge in the system of described terminal
The fast temperature response device of correspondence, and described end it is mounted with at least one relevant first electronic component
At least one control electronic component corresponding with described first electronic component and described quick temperature in the system of end
The signal generating device that degree response device is corresponding connects, and described device is applied in described control electronic component,
This device includes:
Receiver module, for receive described signal generating device send interrupt signal, wherein, described in
Break signal is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value,
Described signal generating device generates；
Cut off module, for cutting off the circuit relevant to power supply.
9. device as claimed in claim 8, it is characterised in that described cut-out module includes:
First cuts off submodule, is used for when described control electronic component is corresponding with described motherboard circuit element
Power management chip time, control the switch that described motherboard circuit element is connected with described battery and open, cut
Disconnected described motherboard circuit element and the connection of described battery；
Second cuts off submodule, is used for when described control electronic component is the charging corresponding with described charger
During device control chip, close the output of described charger；
3rd cuts off submodule, is used for when described control electronic component is that the battery corresponding with described battery is protected
When protecting chip, the analog circuit switch controlling to be connected with described battery is opened, and cuts off the output of described battery.
10. device as claimed in claim 8, it is characterised in that described device also includes:
First detection module, for detecting the load current of described first electronic component of correspondence；
First judge module, during for being less than the setting electric current of correspondence when the described load current detected,
Call recovery module；
Recover module, for recovering the described circuit relevant to power supply.
11. devices as claimed in claim 10, it is characterised in that described device also includes:
Second detection module, is connected with described first judge module, for by described first electronic component
On fast temperature response device, the temperature of described first electronic component that detection is corresponding；
Second judge module, for when the described temperature of detection is less than when setting threshold value, calling described recovery
Module.
12. devices as described in claim 10 or 11, it is characterised in that described recovery module includes:
First recovers submodule, is used for when described control electronic component is the charging corresponding with described charger
During device control chip, open the output of described charger；
Second recovers submodule, is used for when described control electronic component is that the battery corresponding with described battery is protected
When protecting chip, control the analog circuit switch Guan Bi being connected with described battery, recover the output of described battery.
The device of 13. 1 kinds of terminal short circuit protections, in terminal system, it is characterised in that including:
First electronic component relevant to discharge and recharge, and the control electricity corresponding with described first electronic component
Sub-element；Wherein,
The fast temperature response device of correspondence it is mounted with at least one described electronic component；
The signal generator being connected with each fast temperature response device；
At least one controls electronic component and is connected with described signal generating device；
Described control electronic component receives the interrupt signal that described signal generating device sends, wherein, described
Interrupt signal is when the temperature of at least one fast temperature response units test arrives corresponding setting threshold value
Time, described signal generating device generates；
Described control electronic component cuts off the circuit relevant to power supply.
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| CN201610474895.1A CN106026264B (en) | 2016-06-24 | 2016-06-24 | The method and device of terminal short circuit protection |
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| CN201610474895.1A CN106026264B (en) | 2016-06-24 | 2016-06-24 | The method and device of terminal short circuit protection |
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| CN113840362A (en) * | 2021-11-26 | 2021-12-24 | 华中科技大学 | Mobile phone terminal optimization method based on energy consumption interruption probability |
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