CN106451641A - Charging chip, terminal equipment and charging method - Google Patents
Charging chip, terminal equipment and charging method Download PDFInfo
- Publication number
- CN106451641A CN106451641A CN201610970192.8A CN201610970192A CN106451641A CN 106451641 A CN106451641 A CN 106451641A CN 201610970192 A CN201610970192 A CN 201610970192A CN 106451641 A CN106451641 A CN 106451641A
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- Prior art keywords
- charging chip
- switch
- unit
- driver element
- charging
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Classifications
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- 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
-
- 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
- H02J7/00304—Overcurrent protection
Abstract
The invention discloses a charging chip, terminal equipment and a charging method. The charging chip comprises a charging unit, a driving unit, a collecting unit and a control unit, wherein the driving unit is connected with the charging unit; the collecting unit is used for collecting index information of the charging chip, and sending the collected index information to the control unit; the control unit is used for determining the work state of the charging chip according to the received index information and sending a control signal to the driving unit according to the work state of the charging chip, so that the driving unit controls the on-off state of a switch device in the charging unit according to the control signal. Compared with the prior art, the charging chip provided by the embodiment of the invention has the advantages that the overall protection on the charging chip can be realized without external connection of any protection circuit; the problems of incomplete protection function and poor practicability of the existing charging chip can be solved.
Description
Technical field
The present invention relates to field of circuit technology, more particularly, to a kind of charging chip, terminal unit and charging method.
Background technology
At present, with the popularization of the terminal units such as mobile phone, panel computer, people to terminal unit using safety it is also proposed that
Higher requirement, especially the charging safety of terminal unit.
Specifically, complete in order to improve the charging of terminal unit, would generally add in the charging chip of terminal unit in the industry
Enter corresponding protection circuit, such as overvoltage crowbar, under-voltage protecting circuit, current foldback circuit, temperature protection circuit etc., to protect
The charging safety of card terminal unit.But, the protection circuit that existing charging chip includes is often limited, such as may only include
Overvoltage crowbar and under-voltage protecting circuit etc. are so as to the defencive function of charging chip comprehensively it is impossible to ensure terminal
The charging safety of equipment；And, when the defencive function needing to extend charging chip, also need corresponding protection external to charging chip
Circuit, consequently, it is possible to make whole PCB (Printed Circuit Board, printed circuit board (PCB)) panel area excessive, enter
And also it is unfavorable for the Miniaturization Design of terminal unit, reduce the practicality of charging chip.
That is, existing charging chip has that defencive function is not comprehensive and practicality is poor.
Content of the invention
Embodiments provide a kind of charging chip, terminal unit and charging method, in order to solve existing filling
The problem that defencive function existing for electrical chip is not comprehensive and practicality is relatively low.
Embodiments provide a kind of charging chip, the drive be connected including charhing unit and with described charhing unit
Moving cell, described charging chip also includes collecting unit and control unit, wherein：
Described collecting unit, for gathering the indication information of described charging chip, and by the described indication information collecting
Send to described control unit；
Described control unit, for according to the described indication information receiving, determining the working condition of described charging chip,
And the working condition based on described charging chip, to described driver element send control signal, with by described driver element according to
Described control signal controls the break-make of the switching device in described charhing unit.
Embodiments provide a kind of terminal unit, including the charging chip described in the embodiment of the present invention.
Correspondingly, the embodiment of the present invention additionally provides a kind of charging method, including：
The indication information of collection charging chip；
According to the described indication information collecting, determine the working condition of described charging chip, and be based on described work shape
State, control described charging chip in switching device break-make, with by described charging chip into corresponding terminal unit
Battery is charged.
The present invention has the beneficial effect that：
Embodiments provide a kind of charging chip, terminal unit and charging method, including charhing unit and
The driver element being connected with described charhing unit, described charging chip also includes collecting unit and control unit, wherein, described
Collecting unit, for gathering the indication information of described charging chip, and the described indication information collecting is sent to described control
Unit processed；Described control unit, for according to the described indication information receiving, determining the working condition of described charging chip,
And the working condition based on described charging chip, to described driver element send control signal, with by described driver element according to
Described control signal controls the break-make of the switching device in described charhing unit.Compared to prior art, needing to be charged
In chip during the protection of charhing unit, only corresponding indication information need to be gathered using the collecting unit in described charging chip, and
Corresponding indication information is sent to the control unit in described charging chip, described control unit can be directly based upon described index
Information controls each switching device in described charhing unit, to realize the protection to described charhing unit, and need not fill described
External any protection circuit on electrical chip.Solve defencive function existing for charging chip of the prior art not comprehensively with
And the problem that practicality is poor.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing briefly introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 show the structural representation of the charging chip in the embodiment of the present invention；
Fig. 2 show the internal structure schematic diagram of the charging chip in the embodiment of the present invention；
Fig. 3 show the structural representation of the charging system in the embodiment of the present invention；
Fig. 4 show the schematic flow sheet of the charging method in the embodiment of the present invention.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step ground describes in detail it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of not making creative work
All other embodiment, broadly falls into the scope of protection of the invention.
Embodiment：
In order to solve the problems, such as defencive function existing for existing charging chip not comprehensively and practicality is poor, this
Bright embodiment provides a kind of charging chip, as shown in figure 1, the structure that it is the charging chip described in the embodiment of the present invention is shown
It is intended to.Specifically, as shown in figure 1, the charging chip described in the embodiment of the present invention may include charhing unit 11 and with described
The driver element 12 that charhing unit is connected, described charging chip may also include collecting unit 13 and control unit 14, wherein：
Described collecting unit 13, can be used for gathering the indication information of described charging chip, and can be by the described finger collecting
Mark information sends to described control unit 14；
Described control unit 14, can be used for, according to the described indication information receiving, determining the work of described charging chip
State, and can working condition based on described charging chip, send control signal to described driver element 12, with by described driving
Unit 12 controls the break-make of the switching device in described charhing unit 11 according to described control signal.
Wherein, described indication information may include the input voltage of described charging chip, input current, incoming line temperature,
Output voltage, output current, outlet line temperature and junction temperature of chip etc..When described control unit 14 confirms according to indication information
When described charging chip working condition is abnormal, described control unit 14 sends control signal to described driver element 12, with by institute
State the disconnection that driver element 12 controls the switching device in described charhing unit 11 according to described control signal；Control list when described
When unit 14 confirms that described charging chip working condition is normal according to indication information, described control unit 14 is to described driver element 12
Send control signal, to be controlled the switching device in described charhing unit 11 according to described control signal by described driver element 12
Closure conducting.Certainly, it should be noted that described indication information may also include other can characterize the real-time shape of described charging chip
Other indication informations of state, the embodiment of the present invention is not limited in any way to this.
That is, the charging chip described in the embodiment of the present invention, except may include charhing unit and filling with described
Outside the driver element that electric unit is connected, may also include the collecting unit of the indication information for gathering described charging chip, with
And for according to the described indication information receiving, sending the control unit of control signal to described driver element.Compared to existing
There is technology, when needing to be charged the protection of charhing unit in chip, only need to be using the collecting unit in described charging chip
Gather corresponding indication information, and corresponding indication information is sent to the control unit in described charging chip, described control
Unit can be directly based upon each switching device in the described indication information described charhing unit of control, to realize to described charhing unit
Protection, and need not on described charging chip external any protection circuit.Solve charging chip institute of the prior art
The problem that the defencive function existing is not comprehensive and practicality is poor.
Further, described charging chip may also include the voltage regulation unit 15 being connected with the input of described charhing unit 11
And/or protection location 16：
Described voltage regulation unit 15, can be used for adjusting the stability of the voltage inputting described charhing unit 11；
Described protection location 16, can be used for protecting each components and parts in described charging chip.
Specifically, described voltage regulation unit 15, can be used for being maintained at input to the voltage in described charhing unit 11 default
VREF (Voltage Reference, reference voltage) on.Wherein, described VREF flexibly can be arranged according to practical situation, to this
Do not repeat.
Further, it should be noted that described voltage regulation unit 15 may include one or more manostat, such as can be one or many
Individual Zener diode etc., described protection location 16 can be a switching device, can be such as a transistor (p-type audion, N-type three pole
Pipe) or field effect transistor (P-channel field-effect transistor (PEFT) pipe, N-channel field effect transistor) etc., the embodiment of the present invention is not limited in any way to this.
That is, in embodiments of the present invention, when the voltage inputting described charhing unit 11 is in unstable (it is higher than such as
Described VREF etc.) when, it is also based on described voltage regulation unit 15 and control the voltage inputting described charhing unit on VREF；Separately
Outward, when the charhing unit 11 in the described charging chip of determination is in overvoltage condition, under-voltage condition, over-current state and over-temperature condition
When, in addition to can closing the related switch in described charhing unit 11, also can directly turn off opening in described protection location 16
Close device and (opening in described protection location 16 is turned off by the control signal that the driver being connected with described protection location 16 is sent
Close device, described driver can be the driver of other setting, in the driver element 12 alternatively described in the embodiment of the present invention
Driver), to protect each components and parts in described voltage regulation unit and described charging chip to a greater degree, this is not gone to live in the household of one's in-laws on getting married
State.
Below, with Fig. 2 (its as the embodiment of the present invention described in charging chip internal structure schematic diagram) shown in fill
As a example electrical chip, the defencive function of the charging chip described in the embodiment of the present invention is introduced in detail：
As shown in Figure 2, the charhing unit 11 in described charging chip generally can be a charging circuit, and described charging circuit can
Including one or more Charge Pump Converter (charge pump conversion) parallel with one another, (Fig. 2 is to include one for circuit
As a example Charge Pump Converter circuit).Wherein, every Charge Pump Converter circuit may include first and opens
Close (Q1 as shown in Figure 2), second switch (Q2 as shown in Figure 2), the 3rd switch (Q3 as shown in Figure 2) and the
Four switches (Q4 as shown in Figure 2).It should be noted that each switch in described charhing unit 11 is (as shown in Figure 2
Q1, Q2, Q3 and Q4) control end be all connected with the signal output part of described driver element 12；Described first switch is (as Fig. 2
Shown in Q1) first end can as described charging chip the first pin (i.e. power supply signal input, as shown in Figure 2
VBUS, IBUS), the second end is connected with the first end of the described 3rd switch, and the 3rd pin as described charging chip
(CPP as shown in Figure 2)；Second end of described 3rd switch (Q2 as shown in Figure 2) is with described second switch (as Fig. 2
Shown in Q2) the second end be connected, and can be used as the 6th pin (i.e. the power supply signal outfan, such as Fig. 2 of described charging chip
Shown VOUT, IOUT)；The first end that the first end of described second switch (Q2 as shown in Figure 2) switchs with the described 4th
It is connected, and can be used as the 4th pin (CPN as shown in Figure 2) of described charging chip；Described 4th switch is (as institute in Fig. 2
The Q4 showing) the second end can be used as the 5th pin (PGND as shown in Figure 2) of described charging chip；Described driver element 12
The control end of (driver as shown in Figure 2) can be used as the second pin (CB as shown in Figure 2) of described charging chip, institute
The signal input part stating driver element 12 can be with the first end of described control unit 14 (digitial controller as shown in Figure 2)
(i.e. signal output part) is connected.
In addition, it is necessary to explanation, in actual applications, the 3rd pin of described charging chip is (as shown in Figure 2
CPP) and generally can be connected with the first electric capacity between the 4th pin (CPN as shown in Figure 2), the 6th of described charging chip the
Pin (VOUT as shown in Figure 2) generally can be connected with the second electric capacity and earth signal between, to realize to phase in the different stages
Answer the charging of battery (i.e. the battery of the terminal unit related to described charging chip), such as can be in the first stage (before charging
Half period) by the adapter that is connected with first pin (VBUS as shown in Figure 2) of described charging chip to described first
Electric capacity, the second electric capacity and corresponding battery are charged, and pass through described the in second stage (second half of the cycle charging)
One electric capacity and the second electric capacity are charged to described battery, and this is not repeated.
It should be noted that described first switch, second switch, the 3rd switch and the 4th switch can be transistor, such as
Can be audion (concretely N-type audion, p-type audion), field effect transistor (N-channel field effect transistor, P-channel field-effect transistor (PEFT) pipe)
Deng.For example, it is assumed that described first switch, second switch, the 3rd switch and the 4th switch as audion, then described first open
Pass, the control end of second switch, the 3rd switch and the 4th switch can be the base stage of audion, described first switch, second open
Close, the 3rd switch and the 4th first end switching can be the colelctor electrode of audion；Described first switch, second switch, the 3rd
Second end of switch and the 4th switch can be the emitter stage of audion.
Likewise, it is assumed that described first switch, second switch, the 3rd switch and the 4th switch as field effect transistor, then institute
State first switch, the control end of second switch, the 3rd switch and the 4th switch can be the grid of field effect transistor, described first opens
Pass, the first end of second switch, the 3rd switch and the 4th switch can be the drain electrode of field effect transistor, described first switch, second
Second end of switch, the 3rd switch and the 4th switch can be the source electrode of field effect transistor, and the embodiment of the present invention does not repeat to this.
Further, the driver element 12 in described charging chip generally may include one or more drivers (Fig. 2 be to wrap
As a example including a driver).Wherein, the signal input part of each driver is all with described control unit 14 (i.e. described in Fig. 2
Digitial controller) signal output part be connected, the signal output part of each driver can be with each switch in described charging circuit
The control end of device (Q1, Q2, Q3 and Q4 as shown in Figure 2) is connected, and the control end of each driver can be filled as described
The second pin of electrical chip.It should be noted that when only including a driver in described driver element 12, described driver
Signal output part can be connected with the control end of each switching device in described charhing unit 11, when in described driver element wrap
When including multiple driver, the signal output part of each driver can be with the control of the whole switching devices in described charhing unit 11
End is connected, or, the signal output part of each driver can be with the control end of the partial switch device in described charhing unit 11
It is connected.For example, it is assumed that described driver element 12 includes two drivers (such as driver 1 and driver 2), then can will drive
The signal output part of dynamic device 1 is connected with the control end of the first switch in described charging circuit and the 3rd switch, can will drive
The signal output part of device 2 is connected with the control end of the second switch in described charging circuit and the 4th switch.Certainly, also can press
It is attached according to other modes, as long as ensure that the control end of each switching device is respectively connected with corresponding driver and is
Can, the embodiment of the present invention is not limited in any way to this.
Further, the control unit 14 in described charging chip generally may include one or more controllers, and (Fig. 2 is to include one
As a example individual digitial controller).Assume that described control unit includes a digitial controller as shown in Figure 2, then as shown in Figure 2, institute
The second end stating controller can be used as the 7th pin (SDA as shown in Figure 2) of described charging chip；3rd end can be used as institute
State the 8th pin (SCL as shown in Figure 2) of charging chip；4th end can as the 9th pin of described charging chip (such as
SYNC shown in Fig. 2)；5th end can be used as the tenth pin (EN as shown in Figure 2) of described charging chip, and described control
5th end of device processed also can be connected with earth signal by first resistor (R1 as shown in Figure 2)；6th end can be filled as described
11st pin (INT as shown in Figure 2) of electrical chip, and the 6th end of described controller can by metal-oxide-semiconductor (can be also also
Other transistors, such as audion etc.) as described charging chip the 11st pin, wherein, the grid of described metal-oxide-semiconductor with
6th end of described controller is connected, and the drain electrode of described metal-oxide-semiconductor is connected with earth signal, and the source electrode of described metal-oxide-semiconductor fills as described
11st pin of electrical chip, the embodiment of the present invention does not repeat to this.
Further, the collecting unit 13 in described charging chip generally may include one or more moulds parallel with one another
Number converter (Fig. 2 is taking include 8 Channel 12-Bit analog-digital converters as a example).Assume that described collecting unit 13 includes one 8 passages
12 analog-digital converters, then as shown in Figure 2, described analog-digital converter signal output part can with the 7th end of described controller (i.e.
Signal input part) it is connected.It should be noted that as shown in Figure 2, may include 8 comparators inside described analog-digital converter, and,
The positive pole of first comparator can be connected (i.e. with the first end of described first switch by second resistance (R2 as shown in Figure 2)
The voltage inputting described charging chip can be gathered), the positive pole of described first comparator also can be by 3rd resistor (as institute in Fig. 2
The R3 showing) it is connected with earth signal, the negative pole of described first comparator can be connected with earth signal；The positive pole of described second comparator can
It is connected with the first end of described first switch by the 4th resistance (R4 as shown in Figure 2) and (the described charging of input can be gathered
The electric current of chip), the positive pole of described second comparator also can pass through the 5th resistance (R5 as shown in Figure 2) and earth signal phase
Even, the negative pole of described second comparator can be connected with earth signal；The positive pole of described 3rd comparator can be by the 6th resistance (as schemed
R6 shown in 2) be connected (voltage that can gather the output of described charging chip) with the second end of described second switch, and described the
The positive pole of three comparators also can be connected with earth signal by the 7th resistance (R7 as shown in Figure 2), described 3rd comparator
Negative pole can be connected with earth signal；The positive pole of described 4th comparator can by the 8th resistance (R8 as shown in Figure 2) with described
Second end of second switch is connected (electric current that can gather described charging chip output), and the positive pole of described 4th comparator also may be used
It is connected with earth signal by the 9th resistance (R9 as shown in Figure 2), the negative pole of described 4th comparator can be connected with earth signal；
The positive pole of described 5th comparator can be connected with default VREF by the tenth resistance (R10 as shown in Figure 2), also can pass through
First critesistor (RT1 as shown in Figure 2) is connected with earth signal, and the negative pole of described 5th comparator can be with earth signal phase
Even；The positive pole of described 6th comparator can be connected with described VREF by the 11st resistance (R11 as shown in Figure 2), described
The positive pole of the 6th comparator is alternatively arranged as the 12nd pin (TSVBUS as shown in Figure 2) of described charging chip, and described
The negative pole of six comparators can be connected with earth signal；The positive pole of described 7th comparator can by the 12nd resistance (as shown in Figure 2
R12) be connected with described VREF, the positive pole of described 7th comparator is alternatively arranged as the 13rd pin of described charging chip (such as
TSVOUT shown in Fig. 2), the negative pole of described 7th comparator can be connected with earth signal；The positive pole of described 8th comparator can
It is connected with described VREF by the 13rd resistance (R13 as shown in Figure 2), the positive pole of described 8th comparator is alternatively arranged as institute
State the 14th pin (AUX_OTP as shown in Figure 2) of charging chip, the negative pole of described 8th comparator can be with earth signal phase
Even.It should be noted that described charging chip is also equipped with the 15th pin (SGND as shown in Figure 2), and the described 15th
Pin is connected with earth signal in described charging chip.
As shown in the above, the basic meaning of each pin of the charging chip described in the embodiment of the present invention can be as follows
Shown in table 1：
The concrete meaning table of each pin of table 1 charging chip
Furthermore, it is necessary to explanation, any number of elements in the description of the embodiment of the present invention (as first, second, the
Three ... the 15th etc.) it is used to example and unrestricted, this is not repeated.
Next, as a example the charging chip shown in still by Fig. 2, for different indication informations, to described charging chip
Defencive function is introduced in detail：
Specifically, described indication information may include the input voltage of described charging chip；Described control unit, specifically can use
If according to the described input voltage receiving, determining described input voltage beyond default input voltage threshold range, then
Send the first control signal to described driver element, to be controlled the first switch in described charhing unit to be in by described driver element
Off-state.
Wherein, described input voltage threshold range flexibly can be arranged according to practical situation, such as may be configured as 2V～4.2V, 2V
～5V and 4V～5V etc., as long as disclosure satisfy that the real needs of corresponding terminal equipment；Described first control signal also may be used
Flexibly arranged according to practical situation, such as may be configured as high level, low level etc., as long as being capable of to the switch in charhing unit
Correctly the controlling of device, the embodiment of the present invention is not limited in any way to this.
In addition, it is necessary to explanation, described input voltage described herein is beyond default input voltage threshold range
May include：Described input voltage is more than the input overvoltage threshold (assuming described input overvoltage threshold as Vmax1) setting, and, institute
State input voltage and be less than the input undervoltage threshold value (the described input undervoltage threshold value of hypothesis as Vmin1) setting, i.e. described input voltage
Threshold range can be [Vmin1, Vmax1], and this is not repeated.
For example, can be for as a example [2.5V, 5.5V] it is assumed that described collecting unit 13 gathers with described input voltage threshold range
To indication information in input voltage be 5.6V, then in described collecting unit 13, described input voltage is sent to described control
During unit 14, described control unit 14 can determine that described input voltage beyond default input voltage threshold range (i.e. 5.6
＞ 5.5), and then (such as high level, low level etc., do not limit to this can to send the first control signal to described driver element 12
Fixed), to be controlled the first switch (i.e. Q1 shown in Fig. 2) in described charhing unit 11 to be in disconnect shape by described driver element 12
State, and then the components and parts such as first switch in described charging circuit, second switch, the 3rd switch and the 4th switch can be protected.
Certainly, it should be noted that now also can directly close described protection location 16 breaker in middle device, and then described charging can be protected
First switch in voltage regulation unit in chip, described charging circuit, second switch, the 3rd switch and the 4th switch etc., to this
Do not repeat；
Likewise, it is assumed that the input voltage in the indication information that collects of described collecting unit 13 is 2V, then adopt described
When described input voltage is sent to described control unit 14 by collection unit 13, described control unit 14 can determine that described input electricity
Pressure is beyond default input voltage threshold range (i.e. 2 ＜ 2.5), and then can send described first control to described driver element 12
Signal processed, to be controlled the first switch (i.e. Q1 shown in Fig. 2) in described charhing unit 11 to be in disconnected by described driver element 12
Open state, and then first devices such as first switch in described charging circuit, second switch, the 3rd switch and the 4th switch can be protected
Part.Certainly, it should be noted that now also can directly close described protection location 16 breaker in middle device, and then can protect described
First switch in voltage regulation unit in charging chip, described charging circuit, second switch, the 3rd switch and the 4th switch etc.,
This is not repeated；
Correspondingly it is assumed that the input voltage in the indication information that collects of described collecting unit 13 is 4.8V, then described
When described input voltage is sent to described control unit 14 by collecting unit 13, described control unit 14 can determine that described input
Voltage, and then can not be to described driver element 12 without departing from default input voltage threshold range (i.e. 2.5≤4.8≤5.5)
Send any signal so that each switch in described charging circuit is in initial condition (i.e. open mode), thus realizing to corresponding
The safe charging of terminal unit, does not repeat to this.
Specifically, described indication information may include the input current of described charging chip；Described control unit, specifically can use
If according to the described input current receiving, determining described input current beyond default input current threshold value, then to institute
State driver element and send described first control signal, to control in described charhing unit described first to open by described driver element
Closing is in off-state.
Wherein, described input current threshold value flexibly can be arranged according to practical situation, such as may be configured as 500mA, 520mA and
700mA etc., as long as disclosure satisfy that the real needs of corresponding terminal equipment, the embodiment of the present invention is not limited in any way to this.
For example, so that described input current threshold value is as 500mA as a example it is assumed that the indication information that collects of described collecting unit 13
In input current be 520mA, then when described input current is sent to described control unit 14 by described collecting unit 13, institute
State control unit and can determine that described input current beyond default input current threshold value (i.e. 520 ＞ 500), and then can be to institute
State driver element 12 and send described first control signal, to be controlled first in described charhing unit 11 by described driver element 12
Switch (i.e. Q1 shown in Fig. 2) is in off-state, so can protect first switch in described charging circuit, second switch,
The components and parts such as the 3rd switch and the 4th switch.Certainly, it should be noted that now also can directly close described protection location 16
Breaker in middle device, and then the voltage regulation unit in described charging chip, the first switch in described charging circuit can be protected, second open
Pass, the 3rd switch and the 4th switch etc., do not repeat to this；
Correspondingly it is assumed that the input current in the indication information that collects of described collecting unit 13 is 480mA, then described
When described input current is sent to described control unit 14 by collecting unit 13, described control unit can determine that described input electricity
Stream is without departing from default input current threshold value (i.e. 480≤500), and then can not send any letter to described driver element 12
Number so that each switch in described charging circuit is in initial condition (i.e. open mode), thus realizing to corresponding terminal equipment
Safe charging, does not repeat to this.
Specifically, described indication information may include the output voltage of described charging chip；Described control unit, specifically can use
If according to the described output voltage receiving, determining described output voltage beyond default output voltage threshold range, then
To described driver element send the second control signal, with by described driver element control described charhing unit in second switch with
And the 3rd switch all in off-state.
Wherein, described output voltage threshold range flexibly can be arranged according to practical situation, such as may be configured as 1V～2.5V, 1V
～2.1V and 2V～2.5V etc., as long as disclosure satisfy that the real needs of corresponding terminal equipment；Described second control signal
Can flexibly be arranged according to practical situation, such as may be configured as low level, high level etc., as long as ensureing with described first control signal not
With the embodiment of the present invention is not limited in any way to this.
In addition, it is necessary to explanation, described output voltage described herein is beyond default output voltage threshold range
May include：Described output voltage is more than the output overvoltage threshold value (the described output overvoltage threshold value of hypothesis as Vmax2) setting and institute
State output voltage and be not more than the output brownout threshold (assuming described output brownout threshold as Vmin2) setting, i.e. described input electricity
Pressure threshold range can be [Vmin2, Vmax2], and this is not repeated.
For example, can be for as a example [1V, 2.5V] it is assumed that described collecting unit 13 collects with described output voltage threshold range
Indication information in output voltage be 2.6V, then described collecting unit 13 by described output voltage be sent to described control single
During unit 14, described control unit can determine that described output voltage beyond default output voltage threshold range (i.e. 2.6 ＞
2.5), so can to described driver element 12 send the second control signal (such as low level, high level etc., as long as and described first
Control signal is different, and this is not construed as limiting), to control in described charhing unit 11 second to open by described driver element 12
Close and the 3rd switch (i.e. Q2 and Q3 shown in Fig. 2 certainly, can be also Q1 and Q2) is in off-state, and then can protect
Protect the components and parts such as second switch in described charging circuit, the 3rd switch and the 4th switch.Certainly, it should be noted that this
When also can directly close described protection location 16 breaker in middle device, and then voltage regulation unit in described charging chip, institute can be protected
State first switch in charging circuit, second switch, the 3rd switch and the 4th switch etc., this is not repeated；
Likewise, it is assumed that the output voltage in the indication information that collects of described collecting unit 13 is 0.9V, then described
When described output voltage is sent to described control unit 14 by collecting unit 13, described control unit can determine that described output electricity
Pressure is beyond default output voltage threshold range (0.9 ＜ 1), and then can send described second control to described driver element 12
Signal, to be controlled the second switch and the 3rd in described charhing unit 11 to switch (i.e. shown in Fig. 2 by described driver element 12
Q2 and Q3, or can be Q1 and Q2) be in off-state, and then can protect second switch in described charging circuit, the
The components and parts such as three switches and the 4th switch.Certainly, it should be noted that now also can directly close in described protection location 16
Switching device, so can protect the voltage regulation unit in described charging chip, the first switch in described charging circuit, second switch,
3rd switch and the 4th switch etc., do not repeat to this；
Correspondingly it is assumed that the output voltage in the indication information that collects of described collecting unit 13 is 2.4V, then described
When described output voltage is sent to described control unit 14 by collecting unit 13, described control unit can determine that described output electricity
Pressure is without departing from default output voltage threshold range (i.e. 1≤2.4≤2.5), and then can not send to described driver element 12
Any signal so that each switch in described charging circuit is in initial condition (i.e. open mode), thus realizing to corresponding terminal
The safe charging of equipment, does not repeat to this.
Specifically, described indication information may include the output current of described charging chip；Described control unit, specifically can use
If according to the described output current receiving, determining described output current beyond default output current threshold value, or,
Set the period (if flexibly can arrange according to practical situation it is generally the case that the electric current of described charging circuit output is as negative, institute
Stating the setting period may be configured as the shorter period, such as 1 second etc., if the electric current of described charging circuit output is 0, during described setting
Section may be configured as the longer period, such as 1 minute etc., this is not repeated) in be not on the occasion of then sending institute to described driver element
State the second control signal, to be controlled the described second switch and the described 3rd in described charhing unit to open by described driver element
Guan Jun is in off-state.
Wherein, described output current threshold value flexibly can be arranged according to practical situation, such as may be configured as 1A, 1.04A and
1.4A etc., as long as disclosure satisfy that the real needs of corresponding terminal equipment, the embodiment of the present invention is not limited in any way to this.
For example, so that described output current threshold value is as 1A as a example it is assumed that in the indication information that collects of described collecting unit 13
Output current be 1.2A, then when described output current is sent to described control unit 14 by described collecting unit 13, described
Control unit can determine that described output current beyond default output current threshold value (i.e. 1.2 ＞ 1), and then can be to described drive
Moving cell 12 sends described second control signal, to be controlled the second switch in described charhing unit 11 by described driver element 12
And the 3rd switch (i.e. Q2 and Q3 shown in Fig. 2, or can be Q1 and Q2) be in off-state, and then described in can protecting
The components and parts such as the second switch in charging circuit, the 3rd switch and the 4th switch.Certainly, it should be noted that now also may be used
Directly close described protection location 16 breaker in middle device, and then voltage regulation unit in described charging chip, described charging can be protected
First switch in road, second switch, the 3rd switch and the 4th switch etc., do not repeat to this；
Again for example, still with described output current threshold value as 1A, set the period as a example 3 minutes it is assumed that within 3 minutes,
Output current in the indication information that described collecting unit 13 collects is 0A, then in described collecting unit 13 by described output
When electric current is sent to described control unit 14, described control unit can determine that described output current is not just setting in the period
Value, and then described second control signal can be sent to described driver element 12, so that described charging is controlled by described driver element 12
Second switch in unit 11 and the 3rd switch (i.e. Q2 and Q3 shown in Fig. 2, or can be Q1 and Q2) are in disconnection
State, and then the components and parts such as second switch in described charging circuit, the 3rd switch and the 4th switch can be protected.Certainly, need
It is noted that now also can directly close described protection location 16 breaker in middle device, and then can protect in described charging chip
Voltage regulation unit, the first switch in described charging circuit, second switch, the 3rd switch and the 4th switch etc., this is not gone to live in the household of one's in-laws on getting married
State；
Correspondingly it is assumed that the output current in the indication information that collects of described collecting unit 13 is 980mA, then described
When described output current is sent to described control unit 14 by collecting unit 13, described control unit can determine that described output electricity
Stream is without departing from default output current threshold value (980≤1000), and then can not send any signal to described driver element 12,
The each switch in described charging circuit is made to be in initial condition (i.e. open mode), thus realizing the safety to corresponding terminal equipment
Charge, this is not repeated.
Specifically, described indication information may include the junction temperature of described charging chip；Described control unit, if be particularly used in
According to the described junction temperature receiving, determine described junction temperature beyond default junction temperature threshold value, then send the to described driver element
Three control signals, to be controlled described first switch in described charhing unit, described second switch, described by described driver element
3rd switch and the 4th switch are all in off-state.
Further, it is determined that described junction temperature is beyond default junction temperature threshold value, it may include：
Determine that the voltage at the first critesistor two ends within described charging chip that described collecting unit collects does not surpass
Go out default first voltage threshold value (it flexibly can be arranged, and this is not construed as limiting) according to practical situation.
Wherein it is desired to illustrate, described first critesistor (RT1 as shown in Figure 2) is attached to described collection
The positive pole of the 5th comparator of unit 13 (being as a example one 8 Channel 12-Bit analog-digital converters by collecting unit described in 8) with described
Critesistor between signal, positioned at the inside of described charging chip, can present not with the change of described charging chip junction temperature
Same resistance value, the voltage at its two ends occurs to change accordingly as well as the change of described charging chip junction temperature, so that
Described control unit 14 can determine described charging chip based on the magnitude of voltage at the described first critesistor two ends collecting
Whether it is in over-temperature condition.
For example, it is assumed that described first voltage threshold value can be 2V, then if it is determined that the first critesistor in described charging chip
The voltage at two ends be 3V when (3 ＞ 2), then the junction temperature that can determine that described charging chip beyond default junction temperature threshold value, and then
The 3rd control signal (such as high level, low level etc., this is not construed as limiting) can be sent to described driver element 12, with by described drive
Moving cell 12 controls first switch in described charhing unit 11, second switch, the 3rd switch and the 4th switch (i.e. in Fig. 2
Shown Q1, Q2, Q3 and Q4) be in off-state, and then can protect first switch in described charging circuit, second switch,
The components and parts such as the 3rd switch and the 4th switch.Certainly, it should be noted that now also can directly close described protection location 16
Breaker in middle device, and then the voltage regulation unit in described charging chip, the first switch in described charging circuit can be protected, second open
Pass, the 3rd switch and the 4th switch etc., do not repeat to this；
Likewise, it is assumed that described first voltage threshold value can be 2V, then if it is determined that the first temperature-sensitive in described charging chip is electric
The voltage at resistance two ends is during 1V (1≤2), then the junction temperature that can determine that described charging chip, without departing from default junction temperature threshold value, is entered
And any signal can not be sent to described driver element 12, to keep the state of each switching device in described charging chip (as beaten
Open state etc.), thus realizing the safe charging to corresponding terminal equipment, this is not repeated.
Specifically, described indication information may include the incoming line temperature of described charging chip；Described control unit, specifically
If can be used for, according to the described incoming line temperature receiving, determining described incoming line temperature beyond default incoming line
Temperature threshold, then send described first control signal to described driver element, to control the described list that charges by described driver element
Described first switch in unit is in off-state.
Further, it is determined that described incoming line temperature is beyond default incoming line temperature threshold, it may include：
Determine the voltage at the second critesistor two ends external with described charging chip that described collecting unit collects not
Beyond default second voltage threshold value.
Wherein it is desired to explanation, described second voltage threshold value flexibly can be arranged according to practical situation, such as may be configured as
2V, 3V and 4V etc., the embodiment of the present invention is not limited in any way to this.
Need further exist for illustrating, if necessary overheat protector is carried out to the incoming line of described charging chip, also may be used
(do not mark in Fig. 2 in upper external second critesistor of the 12nd pin (TSVBUS as shown in Figure 2) of described charging chip
Go out), described second critesistor can be placed near the incoming line of described charging chip, with charging chip described in real-time monitoring
It is the temperature of incoming line.
For example, it is assumed that described second voltage threshold value can be 2V, then if it is determined that the 12nd pin of described charging chip is (as schemed
TSVBUS shown in 2) voltage at upper the second external critesistor two ends is during 3V (3 ＞ 2), then can determine that described charging
The incoming line temperature of chip is beyond default incoming line temperature threshold, and then can send described to described driver element 12
First control signal, to be controlled the first switch in described charhing unit 11 (i.e. shown in Fig. 2 by described driver element 12
Q1) it is in off-state, and then first switch in described charging circuit, second switch, the 3rd switch and the 4th can be protected to open
The components and parts such as pass.Certainly, it should be noted that now also can directly close described protection location 16 breaker in middle device, Jin Erke
Protect the voltage regulation unit in described charging chip, the first switch in described charging circuit, second switch, the 3rd switch and the 4th
Switch etc., does not repeat to this；
Correspondingly it is assumed that described second voltage threshold value can be 2V, then if it is determined that the 12nd pin of described charging chip (such as
TSVBUS shown in Fig. 2) voltage at upper the second external critesistor two ends is during 1V (1≤2), then can determine that described in fill
The incoming line temperature of electrical chip is without departing from default incoming line temperature threshold, and then can not send to described driver element 12
Any signal, to keep the state (as open mode etc.) of each switching device in described charging chip, thus realize to corresponding end
The safe charging of end equipment, does not repeat to this.
Specifically, described indication information may include the outlet line temperature of described charging chip；Described control unit, specifically
If can be used for, according to the described outlet line temperature receiving, determining described outlet line temperature beyond default outlet line
Temperature threshold, then send described second control signal to described driver element, to control the described list that charges by described driver element
Described second switch in unit and described 3rd switch are in off-state.
Further, it is determined that described outlet line temperature is beyond default outlet line temperature threshold, it may include：
Determine the voltage at the threeth critesistor two ends external with described charging chip that described collecting unit collects not
Beyond default tertiary voltage threshold value.
Wherein it is desired to explanation, described tertiary voltage threshold value flexibly can be arranged according to practical situation, such as may be configured as
2V, 3V and 4V etc., the embodiment of the present invention is not limited in any way to this.
Need further exist for illustrating, if necessary overheat protector is carried out to the outlet line of described charging chip, also may be used
(do not mark in Fig. 2 in upper external 3rd critesistor of the 13rd pin (TSVOUT as shown in Figure 2) of described charging chip
Go out), described 3rd critesistor can be placed near the outlet line of described charging chip, with charging chip described in real-time monitoring
It is the temperature of outlet line.
For example, it is assumed that described tertiary voltage threshold value can be 2V, then if it is determined that the 13rd pin of described charging chip is (as schemed
TSVOUT shown in 2) voltage at upper the 3rd external critesistor two ends is during 3V (3 ＞ 2), then can determine that described charging
The outlet line temperature of chip is beyond default outlet line temperature threshold, and then can send described to described driver element 12
Second control signal, to be controlled the second switch and the 3rd in described charhing unit 11 to switch (i.e. by described driver element 12
Q2 and Q3 shown in Fig. 2, or Q1 and Q2) it is in off-state, and then in described charging circuit second can be protected to open
The components and parts such as pass, the 3rd switch and the 4th switch.Certainly, it should be noted that now also can directly close described protection list
First 16 breaker in middle devices, so can protect the voltage regulation unit in described charging chip, the first switch in described charging circuit, second
Switch, the 3rd switch and the 4th switch etc., do not repeat to this；
Correspondingly it is assumed that described tertiary voltage threshold value can be 2V, then if it is determined that the 13rd pin of described charging chip (such as
TSVOUT shown in Fig. 2) voltage at upper the 3rd external critesistor two ends is during 1V (1≤2), then can determine that described in fill
The outlet line temperature of electrical chip is without departing from default outlet line temperature threshold, and then can not send to described driver element 12
Any signal, to keep the state (as open mode etc.) of each switching device in described charging chip, thus realize to corresponding end
The safe charging of end equipment, does not repeat to this.
Specifically, described indication information may include the battery temperature of the battery corresponding with described charging chip；Described control
Unit processed, if being particularly used according to the described battery temperature receiving, determines described battery temperature beyond default battery
Temperature threshold, then send described second control signal to described driver element, to control the described list that charges by described driver element
Described second switch in unit and described 3rd switch are in off-state.
Further, it is determined that described battery temperature is beyond default battery temperature threshold value, it may include：
Determine the voltage at the fourth critesistor two ends external with described charging chip that described collecting unit collects not
Beyond default 4th voltage threshold.
Wherein it is desired to explanation, described 4th voltage threshold flexibly can be arranged according to practical situation, such as may be configured as
2V, 3V and 4V etc., the embodiment of the present invention is not limited in any way to this.
Need further exist for illustrating, if necessary to battery (the i.e. described charging chip related to described charging chip
The battery of the terminal unit being located) carry out overheat protector, also can in the 14th pin of described charging chip (as shown in Figure 2
AUX_OTP) upper external 4th critesistor (not marking in Fig. 2), described 4th critesistor can be placed in described charging core
Near battery outside piece, with the temperature of the real-time monitoring battery related to described charging chip.
For example, it is assumed that described 4th voltage threshold can be 2V, then if it is determined that the 14th pin of described charging chip is (as schemed
AUX_OTP shown in 2) upper the 4th external critesistor two ends voltage be during 3V (3 ＞ 2) it may be determined that described battery
Road temperature is beyond default battery temperature threshold value, and then can send described first control signal to described driver element 12, with
Controlled by described driver element 12 first switch (i.e. Q1 shown in Fig. 2) in described charhing unit 11 to be in off-state, enter
And the components and parts such as first switch in described charging circuit, second switch, the 3rd switch and the 4th switch can be protected.Certainly,
It should be noted that now also can directly close described protection location 16 breaker in middle device, and then described charging chip can be protected
In voltage regulation unit, the first switch in described charging circuit, second switch, the 3rd switch and the 4th switch etc., this is not made
Repeat；
Correspondingly it is assumed that described 4th voltage threshold can be 2V, then if it is determined that the 14th pin of described charging chip (such as
AUX_OTP shown in Fig. 2) upper the 4th external critesistor two ends voltage be during 1V (1≤2) it may be determined that described fill
The battery temperature of electrical chip is without departing from default battery threshold, and then can not send any signal to described driver element 12, with
Keep the state (as open mode etc.) of each switching device in described charging chip, thus realizing the safety to corresponding terminal equipment
Charge, this is not repeated.
In addition, it is necessary to explanation, described first voltage threshold value, second voltage threshold value, tertiary voltage threshold value and the 4th
Voltage threshold may be configured as identical or different, and the embodiment of the present invention does not repeat to this.
Further, the embodiment of the present invention additionally provides a kind of terminal unit, it may include described in the embodiment of the present invention
Charging chip.
Furthermore, the embodiment of the present invention additionally provides a kind of charging system, and as shown in Figure 3, it is institute in the embodiment of the present invention
The charging system stated.Specifically, from the figure 3, it may be seen that described charging system may include adapter 31 and terminal unit 32, wherein：
Described adapter 31, can be used for charging to the battery of described terminal unit 32 by charging chip.
Yet further, the embodiment of the present invention additionally provides a kind of charging method, and as shown in Figure 4, it is implemented for the present invention
The schematic flow sheet of the charging method described in example.Specifically, as shown in Figure 4, described charging method may include following steps：
Step 401：The indication information of collection charging chip；
Step 402：According to the described indication information collecting, determine the working condition of described charging chip, and be based on institute
State working condition, control the break-make of the switching device in described charging chip, with by described charging chip to corresponding terminal
Battery in equipment is charged.
Embodiments provide a kind of charging chip, terminal unit and charging method, including charhing unit and
The driver element being connected with described charhing unit, described charging chip also includes collecting unit and control unit, wherein, described
Collecting unit, for gathering the indication information of described charging chip, and the described indication information collecting is sent to described control
Unit processed；Described control unit, for according to the described indication information receiving, determining the working condition of described charging chip,
And the working condition based on described charging chip, to described driver element send control signal, with by described driver element according to
Described control signal controls the break-make of the switching device in described charhing unit.Compared to prior art, needing to be charged
In chip during the protection of charhing unit, only corresponding indication information need to be gathered using the collecting unit in described charging chip, and
Corresponding indication information is sent to the control unit in described charging chip, described control unit can be directly based upon described index
Information controls each switching device in described charhing unit, to realize the protection to described charhing unit, and need not fill described
External any protection circuit on electrical chip.Solve defencive function existing for charging chip of the prior art not comprehensively with
And the problem that practicality is poor.
In addition, it is necessary to illustrate, the control unit in the charging chip described in the embodiment of the present invention (is concretely controlled
Controller in unit processed, digitial controller as shown in Figure 2) also the indication information receiving can be sent to outside
CPU, thus realizing the shared of relevant information in different terminal equipment, and, outer CPU can read described index letter in real time
Breath, and machine system can be made with some adjustment actions, this is not repeated.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, device (equipment) or computer journey
Sequence product.Therefore, the present invention using complete hardware embodiment, complete software embodiment or can combine software and hardware aspect
The form of embodiment.And, the present invention can be using in one or more calculating wherein including computer usable program code
The upper computer program implemented of machine usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow chart with reference to method according to embodiments of the present invention, device (equipment) and computer program
And/or block diagram is describing.It should be understood that can be by each flow process in computer program instructions flowchart and/or block diagram
And/or the combination of the flow process in square frame and flow chart and/or block diagram and/or square frame.These computer programs can be provided to refer to
The processor making general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device is to produce
One machine is so that produced for realizing by the instruction of computer or the computing device of other programmable data processing device
The device of the function of specifying in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing device with spy
Determine in the computer-readable memory that mode works so that the instruction generation inclusion being stored in this computer-readable memory refers to
Make the manufacture of device, this command device realize in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The function of specifying in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing device so that counting
On calculation machine or other programmable devices, execution series of operation steps to be to produce computer implemented process, thus in computer or
On other programmable devices, the instruction of execution is provided for realizing in one flow process of flow chart or multiple flow process and/or block diagram one
The step of the function of specifying in individual square frame or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to including excellent
Select embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (15)
1. a kind of charging chip, the driver element be connected including charhing unit and with described charhing unit is it is characterised in that institute
State charging chip and also include collecting unit and control unit, wherein：
Described collecting unit, for gathering the indication information of described charging chip, and the described indication information collecting is sent
To described control unit；
Described control unit, for according to the described indication information receiving, determining the working condition of described charging chip, and base
In the working condition of described charging chip, send control signal to described driver element, with by described driver element according to described
Control signal controls the break-make of the switching device in described charhing unit.
2. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the input of described charging chip
Voltage；Described control unit, if specifically for according to the described input voltage receiving, determining described input voltage beyond pre-
If input voltage threshold range, then to described driver element send the first control signal, with by described driver element control institute
Stating the first switch in charhing unit is in off-state.
3. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the input of described charging chip
Electric current；Described control unit, if specifically for according to the described input current receiving, determining described input current beyond pre-
If input current threshold value, then to described driver element send described first control signal, with by described driver element control institute
Stating the described first switch in charhing unit is in off-state.
4. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the output of described charging chip
Voltage；Described control unit, if specifically for according to the described output voltage receiving, determining described output voltage beyond pre-
If output voltage threshold range, then to described driver element send the second control signal, with by described driver element control institute
State the second switch in charhing unit and the 3rd to switch all in off-state.
5. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the output of described charging chip
Electric current；Described control unit, if specifically for according to the described output current receiving, determining described output current beyond pre-
If output current threshold value, or, set the period in be not on the occasion of, then to described driver element send described second control letter
Number, to be controlled the described second switch and the described 3rd in described charhing unit to switch all in disconnection shape by described driver element
State.
6. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the knot of described charging chip
Temperature；Described control unit, if specifically for according to the described junction temperature receiving, determining described junction temperature beyond default junction temperature threshold
Value, then send the 3rd control signal to described driver element, described in being controlled in described charhing unit by described driver element
First switch, described second switch, described 3rd switch and the 4th switch are all in off-state.
7. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the input of described charging chip
Line temperature；Described control unit, if specifically for according to the described incoming line temperature receiving, determining described incoming line
Temperature beyond default incoming line temperature threshold, then sends described first control signal to described driver element, with by institute
State driver element to control the described first switch in described charhing unit is in off-state.
8. charging chip as claimed in claim 7 is it is characterised in that determine described incoming line temperature beyond default defeated
Enter line temperature threshold value, including：
Determine the voltage at the first critesistor two ends external with described charging chip that described collecting unit collects without departing from
Default first voltage threshold value.
9. charging chip as claimed in claim 1 is it is characterised in that described indication information includes the output of described charging chip
Line temperature；Described control unit, if specifically for according to the described outlet line temperature receiving, determining described outlet line
Temperature beyond default outlet line temperature threshold, then sends described second control signal to described driver element, with by institute
State driver element to control the described second switch and the described 3rd in described charhing unit to switch is in off-state.
10. charging chip as claimed in claim 1 is it is characterised in that determine described outlet line temperature beyond default
Outlet line temperature threshold, including：
Determine the voltage at the second critesistor two ends external with described charging chip that described collecting unit collects without departing from
Default second voltage threshold value.
11. charging chips as claimed in claim 1 are it is characterised in that described indication information includes and described charging chip phase
The battery temperature of corresponding battery；Described control unit, if described specifically for according to the described battery temperature receiving, determining
Battery temperature beyond default battery temperature threshold value, then sends described second control signal to described driver element, with by institute
State driver element to control the described second switch and the described 3rd in described charhing unit to switch is in off-state.
12. charging chips as claimed in claim 11 are it is characterised in that determine described battery temperature beyond default battery
Temperature threshold, including：
Determine the voltage at the threeth critesistor two ends external with described charging chip that described collecting unit collects without departing from
Default tertiary voltage threshold value.
13. such as claim 1～12 arbitrary described charging chips it is characterised in that described charging chip also include with described
Voltage regulation unit and/or protection location that the input of charhing unit is connected：
Described voltage regulation unit, for adjusting the stability of the voltage inputting described charhing unit；
Described protection location, for protecting each components and parts in described charging chip.
A kind of 14. terminal units are it is characterised in that include the charging chip as described in any one of claim 1-13.
A kind of 15. charging methods are it is characterised in that include：
The indication information of collection charging chip；
According to the described indication information collecting, determine the working condition of described charging chip, and be based on described working condition, control
Make the break-make of the switching device in described charging chip, to enter to the battery in corresponding terminal unit by described charging chip
Row charges.
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Cited By (1)
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| CN110994735A (en) * | 2019-12-23 | 2020-04-10 | 炬星科技（深圳）有限公司 | Charge and discharge control method, system, device and computer readable storage medium |
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| CN103607009A (en) * | 2013-11-22 | 2014-02-26 | 钰泰科技（上海）有限公司 | Charging and discharging circuit with automatic protecting function |
| CN105720632A (en) * | 2016-01-22 | 2016-06-29 | 珠海市魅族科技有限公司 | Current increase module and electronic terminal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994735A (en) * | 2019-12-23 | 2020-04-10 | 炬星科技（深圳）有限公司 | Charge and discharge control method, system, device and computer readable storage medium |
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| CN106451641B (en) | 2018-08-07 |
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