CN107819338A - Battery protection integrated circuit, and protection circuit and protection method thereof - Google Patents
Battery protection integrated circuit, and protection circuit and protection method thereof Download PDFInfo
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- CN107819338A CN107819338A CN201610956149.6A CN201610956149A CN107819338A CN 107819338 A CN107819338 A CN 107819338A CN 201610956149 A CN201610956149 A CN 201610956149A CN 107819338 A CN107819338 A CN 107819338A
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- 238000000034 method Methods 0.000 title claims description 35
- 238000007600 charging Methods 0.000 claims abstract description 136
- 230000005611 electricity Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010278 pulse charging Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 description 15
- 238000005859 coupling reaction Methods 0.000 description 15
- 230000008878 coupling Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- DFCAFRGABIXSDS-UHFFFAOYSA-N Cycloate Chemical compound CCSC(=O)N(CC)C1CCCCC1 DFCAFRGABIXSDS-UHFFFAOYSA-N 0.000 description 1
- 235000018734 Sambucus australis Nutrition 0.000 description 1
- 244000180577 Sambucus australis Species 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A battery protection integrated circuit is coupled between a battery and a charger and coupled with a charging switch. The battery protection integrated circuit comprises a charging switch control pin, a control unit and a current sensing pin. The charging switch control pin is coupled with the charging switch. The control unit is coupled to the charging switch control pin and the current sensing pin for sensing the charging current. When the charging current is larger than the first preset value and lasts for the first preset time, the control unit controls the charging switch to be repeatedly switched on for the second preset time and switched off for the third preset time so as to perform pulse charging operation on the battery. The first preset value is lower than the overcurrent protection current preset value. Therefore, the manufacturing cost of the charger microprocessor is reduced, and the service life of the battery is prolonged.
Description
Technical field
The present invention is relevant with battery protection, especially with regard to a kind of battery protection integrated circuit and its protection circuit, protection
Method.
Background technology
Fig. 1 is refer to, Fig. 1 is the battery protecting circuit 1 that prior art uses.Battery protecting circuit 1 includes battery protection
Integrated circuit 10, battery protection integrated circuit 10 have detecting pin CS and charge switch control pin CO, detecting pin CS use
To detect the charging current in loop；Charge switch controls pin CO then as protection when being charged to battery BA.When charging electricity
During throat floater, charge switch M1 is disconnected, and now clockwise charge path is not turned on, and reaches the effect of charge protection.
Fig. 2 is refer to, Fig. 2 is the Organization Chart of existing charging system.Charger 2 passes through charger anode PB+ and negative terminal PB-
Battery protecting circuit 1 is coupled to, charger 2 includes power supply device (power regulator) 20, charge switch 22, put
Electric switch 24 and microprocessor (CPU) 26.Power supply device 20 provides charging current, and is controlled and charged by microprocessor 26
The operation of switch 22 and discharge switch 24, to carry out charging operations to battery BA.
Fig. 3 is the timing diagram of the charging current when battery is charged under pulse charge pattern.As shown in figure 3, work as
When battery is charged under pulse charge pattern, the cycle T of its charging current signal includes the constant-current charge being spaced
Time TP and not charging interval TD, by enable the carrier concentration of inside battery to tend to be evenly distributed.Compared to tradition
Constant-current charge pattern, pulse charge pattern can be reduced in the case where not shortening battery needed for battery charging
Time.
Fig. 4 is the timing diagram of the charging current when battery is being charged under reflecting charge mode.It is as shown in figure 4, anti-
Penetrate a kind of aspect that charge mode is pulse charge pattern, when battery is being charged under reflecting charge mode, charging current
Cycle T in addition to comprising the constant-current charge time TP being spaced and not charging interval TD, also comprising a bit of electric discharge
Time TN, by way of carrying out a little electric discharge in the neutral gear in charging interval so that the carrier concentration of inside battery can be faster
Tend to be evenly distributed fastly.Compared to above-mentioned typical pulse charge pattern, although reflection charge mode can somewhat sacrifice
Energy, but can more effectively slow down the aging speed of battery, more to extend the service life of battery.
Common pulse charge/reflection charge function is to be responsible for control by the microprocessor of charger.Pass through charger
Charge switch control output current whether export to reach the effect of pulse charge, and the discharge switch of utilization charger
The effect that the reflection for carrying electric current to reach to battery discharge is charged is taken out, although being opened using charger control charge switch with electric discharge
Pass reaches pulse charge/reflection charge function, but the circuit of these ways is complicated, and manufacturing cost is also relative to be improved.
The content of the invention
The present invention provides a kind of battery protection integrated circuit and its protection circuit, guard method so that battery is filled
The battery protection integrated circuit of electric protection can also realize the function of pulse charge and reflection charging, by being met with improving prior art
The problem of running into.
A preferred embodiment according to the present invention is a kind of battery protection integrated circuit.Battery protection integrated circuit coupling
It is connected between battery and charger, and couples charge switch.Battery protection integrated circuit includes charge switch control pin, control
Unit and current sense pins.Charge switch control pin coupling charge switch.Control unit coupling charge switch control pin
And current sense pins.Current sense pins are to sense charging current, when charging current is more than the first preset value and continues the
During one preset time, control unit control charge switch turns on the second preset time with closing the 3rd preset time repeatedly, with right
Battery carries out pulse charge operation.Above-mentioned first preset value is less than overcurrent protection electric current preset value.
In one embodiment of this invention, battery protection integrated circuit is also comprising discharge switch and electric discharge pin.Electric discharge connects
Pin couples discharge switch.When battery protection integrated circuit provides pulse charge operation, battery protection integrated circuit also provides instead
Charging operations are penetrated, to operate charge switch and discharge switch.
In one embodiment of this invention, in charging operations are reflected, control unit control charge switch and discharge switch
Alternate conduction.
In one embodiment of this invention, in charging operations are reflected, during one does not charge, control unit control charging
Switch simultaneously closes off with discharge switch.
In one embodiment of this invention, when charging current is less than the second preset value and continues the second preset time, control
Unit processed stops carrying out pulse charge operation to battery.
In one embodiment of this invention, battery protection integrated circuit is also comprising multiple charge parameters setting pin, and often
One charge parameter setting pin couples an external setting-up parameters unit.
Another preferred embodiment according to the present invention is a kind of battery protecting circuit.In this embodiment, battery is protected
Protection circuit is coupled between battery and charger.Battery protecting circuit include charge switch, external discharge switch, control unit and
Current sensing unit.External discharge switch is coupled between charge switch and battery.Control unit coupling external discharge switch and
Charge switch.Current sensing unit couples control unit, to sense charging current of the charger to battery.When charging current is big
In the first preset value and when continuing the first preset time, control unit control charge switch turns on the second preset time with closing repeatedly
The 3rd preset time is closed, to carry out pulse charge operation to battery.
In one embodiment of this invention, also it is coupled to comprising a discharge switch between the battery and ground connection, when the battery
When protection circuit provides pulse charge operation, the control unit controls the discharge switch and the charge switch, anti-to provide one
Penetrate charging operations.
In one embodiment of this invention, in the reflection charging operations, the control unit controls the charge switch with being somebody's turn to do
Discharge switch alternate conduction.
In one embodiment of this invention, in the reflection charging operations, during one does not charge, control unit control
The charge switch simultaneously closes off with the discharge switch.
In one embodiment of this invention, when the charging current is less than one second preset value and continues one the 4th preset time
When, the control unit stops carrying out the battery pulse charge operation.
In one embodiment of this invention, first preset value is less than an overcurrent protection electric current preset value.
Another preferred embodiment according to the present invention is a kind of battery protecting method.In this embodiment, battery is protected
Maintaining method to protect by charger charge battery.Battery protecting method comprises the steps of：(a) the charging electricity of battery is sensed
Stream；(b) judge whether charging current is more than the first preset value and continues the first preset time；If (c) judged result of step (b)
It is yes, control charge switch turns on the second preset time with closing the 3rd preset time repeatedly, to carry out pulse charge to battery
Operation.Above-mentioned first preset value is less than an overcurrent protection electric current preset value.
In one embodiment of this invention, in step (c), the battery protecting method also provides a reflection charging operations,
To operate a discharge switch, the discharge switch is coupled between the battery and an earth terminal.
In one embodiment of this invention, in the reflection charging operations, the battery protecting method controls the charge switch
With the discharge switch alternate conduction.
In one embodiment of this invention, in the reflection charging operations, during one does not charge, the battery protecting method
The charge switch is controlled to be simultaneously closed off with the discharge switch.
In one embodiment of this invention, when the charging current is less than one second preset value and continues one second preset time
When, the battery protecting method stops carrying out the battery pulse charge operation.
Compared to prior art, battery protection integrated circuit of the invention and its protection circuit, guard method can be not
In the case of changing charger controlled integrated circuit framework, the battery protection integrated circuit only by carrying out charge protection to battery
I.e. can be achieved pulse charge and reflection charging function, not only can effectively reduce charge control integrated circuit circuit complexity and
Manufacturing cost, it can also increase the feature of battery protection integrated circuit.
It can be obtained further by following detailed description of the invention and appended accompanying drawing on the advantages and spirit of the present invention
Solution.
Brief description of the drawings
Fig. 1 be prior art used by battery protection integrated circuit circuit diagram.
Fig. 2 is existing charging system architecture figure.
Fig. 3 is the timing diagram of the charging current when battery is charged under pulse charge pattern.
Fig. 4 is the timing diagram of the charging current when battery is being charged under reflecting charge mode.
Fig. 5 is the schematic diagram according to the battery protecting circuit of the specific embodiment of the present invention.
Fig. 6 is an embodiment of the battery protection integrated circuit in Fig. 5.
Fig. 7 is respectively charging current and electric discharge pin LO electric currents, charge switch control pin CO and discharge switch control
The timing diagram of pin DO control signal.
Fig. 8 A are the timing diagram that charging interval does not include discharge time.
Fig. 8 B are connected in the timing diagram after discharge time for the not charging interval.
Fig. 9 is the flow chart according to the battery protecting method of the another specific embodiment of the present invention.
Figure 10 is the flow chart according to the battery protecting method of the another specific embodiment of the present invention.
Main element symbol description：
1st, 5 battery protecting circuit
10th, 50 battery protection integrated circuit
BA batteries
LO electric discharge pins
VCC supply voltage pins
VSS is grounded pin
DO discharge switches control pin
CO charge switch controls pin
CS current sense pins
2 chargers
20 power supply devices
22 charge switch
24 discharge switches
26 microprocessors
I_SET current settings pins
The ON_SET opening times set pin
The OFF_SET shut-in times set pin
M1 charge switch
M2 external discharges switch
M3 discharge switches
GND earth terminals
PB+ charger anodes
PB- charger negative terminals
RLO、RVCC、RCS、RISET、RON、ROFFResistance
CVCCElectric capacity
PTC semistors
The T cycles
The TP charging intervals
TD not charging intervals
TN discharge times
IP charging currents
TH1 additives for overcharge protection voltage thresholds
TH2 over voltage thresholds
Overcurrent protection current threshold when TH4 charges
TH5 short-circuit protection voltage thresholds
Overcurrent protection current threshold when TH6 discharges
500 control units
501 time generation units
502~503 sensing units
504 time setting units
505 current setting unit settings
A1~A6 amplifiers
A7~A8 drivers
ICHACharging current
IREFLEX_ENFirst preset value
tTR_ENFirst preset time
IREFLEX_DISSecond preset value
tTR_DISSecond preset time
tREFLEX_OFFThe not charging interval
tREFLEX_ONCharging interval
ICI0VOvercurrent protection current threshold during charging
IN discharge currents
S12~S16, S20~S36 steps
Embodiment
A preferred embodiment according to the present invention is a kind of battery protecting circuit.In this embodiment, battery protection
Circuit is coupled between battery and charger, and its function to battery except carrying out charge protection to avoid battery from causing to damage it
Outside, the function of pulse charge and/or reflection charging can be also realized, more effectively to slow down the aging speed of battery and extend battery
Service life.
Fig. 5 is refer to, Fig. 5 is the schematic diagram of the battery protecting circuit in this embodiment.
As shown in figure 5, battery protecting circuit 5 is coupled between battery BA and the positive and negative both ends PB+ and PB- of charger.Electricity
Pond protection circuit 5 includes battery protection integrated circuit 50, charge switch M1, external discharge switch M2, resistance RISET、RON、ROFF、
RCS、RLO、RVCCAnd electric capacity CVCC.Battery protection integrated circuit 50 includes multiple charge parameter setting pins, such as current settings
Pin I_SET, opening time setting pin ON_SET and shut-in time setting pin OFF_SET.
In one embodiment of this invention, each charge parameter setting pin coupling in battery protection integrated circuit 50
External setting-up parameters unit (such as the resistance R outside current settings pin I_SET couplingsISET；Opening time setting pin ON_
Resistance R outside SET couplingsON, the rest may be inferred), set with the related charge parameter of setting.In other implementation profits, it can also lead to
Cross the elements such as oscillator or current mirror charge parameter is made in inside IC.
In this embodiment, electric discharge pin LO passes through resistance RLOIt is coupled between the anode PB+ of charger and battery BA；For
Piezoelectric voltage pin VCC passes through resistance RVCCIt is coupled to battery BA anode；Ground connection pin VSS is coupled to earth terminal GND and battery BA
Negative terminal；Discharge switch control pin DO coupling external discharge switches M2 gate, and external discharge switch M2 is arranged at and filled
Between the negative terminal PB- and battery BA of electrical equipment；Charge switch control pin CO coupling charge switch M1 gate, and charge switch
M1 is arranged between the negative terminal PB- of charger and external discharge switch M2；Current sense pins CS passes through resistance RCSIt is coupled to and fills
Between the negative terminal PB- and charge switch M1 of electrical equipment；Current settings pin I_SET passes through resistance RISETIt is coupled to earth terminal GND；Open
Open time setting pin ON_SET and pass through resistance RONIt is coupled to earth terminal GND；Shut-in time setting pin OFF_SET passes through resistance
ROFFIt is coupled to earth terminal GND.Electric capacity CVCCOne end be coupled to supply voltage pin VCC and resistance RVCCBetween.
It refer to Fig. 6.Fig. 6 is an embodiment of the battery protection integrated circuit 50 in Fig. 5.As shown in fig. 6, battery protection
Integrated circuit 50 except comprising electric discharge pin LO, supply voltage pin VCC, ground connection pin VSS, discharge switch control pin DO,
Charge switch control pin CO, current sense pins CS, current settings pin I_SET, opening time setting pin ON_SET and
Outside the charge parameter setting pin such as shut-in time setting pin OFF_SET, also comprising control unit 500, time generation unit
501st, sensing unit 502~503, time setting unit 504, current setting unit setting 505, discharge switch M3 and amplifier A1~
A6。
Control unit 500 be respectively coupled to time generation unit 501, sensing unit 502~503, time setting unit 504 and
Amplifier A1~A6 output end；Driver element 501 is coupled to discharge switch by driver A7 and A8 respectively and controls pin DO
And charge switch control pin CO；Sensing unit 502 is coupled to current sense pins CS and amplifier A3~A6, A8；Sensing is single
Member 503 is coupled to supply voltage pin VCC and amplifier A1~A2；Time setting unit 504 is respectively coupled to opening time setting
Pin ON_SET and shut-in time setting pin OFF_SET；Current setting unit setting 505 couples current settings pin I_SET and put
Big device A3；Discharge switch M3 is coupled between electric discharge pin LO and earth terminal GND, and discharge switch M3 gate coupling control
Unit 500.
Amplifier A1~A2 positive input terminal+coupling sensing unit 503, and negative input end-different voltage is received respectively
Dependent thresholds TH1~TH2, such as additives for overcharge protection voltage threshold (Over-charge threshold) or over electricity
Press threshold value (Over-discharge threshold)；Amplifier A3 positive input terminal+coupling current sense pins CS and negative defeated
Enter end-coupling current setting unit setting 505；Amplifier A4~A5 positive input terminal+coupling current sense pins CS, and negative input
Different electric current dependent thresholds TH4~TH6, such as overcurrent protection current threshold (Over- during charging hold-are received respectively
Current threshold at charging), short-circuit protection voltage threshold (Short-circuit protection
Overcurrent protection current threshold (Over-current threshold at discharging) when threshold), discharging
Or first preset value and the second preset value of this case.
Control unit 500 is understood first to the charging current that current sense pins CS is sensed compared with the first preset value,
To judge whether charging current is more than the first preset value.First preset value can be less than overcurrent protection current threshold during charging.
Such as the I in Fig. 7REFLEX_ENCan be the first preset value, and ICI0VOvercurrent protection current threshold when can be charging, but
It is not limited.
If the charging current that current sense pins CS is sensed is more than the first preset value, control unit 500 starts into one
Step judges whether charging current continues the first preset time more than the state of the first preset value.It is default that if charging current is more than first
The state of value has continued the first preset time, then control unit 500 can control charge switch M1 to turn on the second preset time repeatedly
(On-time) with closing the 3rd preset time (Off-time), to carry out pulse charge operation to battery BA.
When battery protection integrated circuit 50 carries out pulse charge operation to battery BA, battery protection integrated circuit 50 can also
It is turned on and off providing reflection charging operations by discharge switch M3, and utilizes the non-essential resistance R with electric discharge pin LO couplingsLO
Determine discharge current size.
Fig. 7 is refer to, as the charging current I in Fig. 7CHAIt is more than the first preset value I for the first timeREFLEX_ENWhen, due to control
Unit 500 judges charging current ICHAMore than the first preset value IREFLEX_ENState duration be less than the first preset time
tTR_EN, therefore reflection charge mode can not be triggered.Now control unit 500 can't carry out reflection charging operations.First it is default when
Between tTR_ENIt can be 50 milliseconds of (msec)~2 second (sec), but be not limited.
As the charging current I in Fig. 7CHAIt is more than the first preset value I for the second timeREFLEX_ENWhen, because control unit 500 judges
Charging current ICHAMore than the first preset value IREFLEX_ENState duration up to the first preset time tTR_EN, can touch
Hair reflection charge mode.Control unit 500 proceeds by reflection charging operations.
Operate and reflect in charging operations in pulse charge, control unit 500, which compares, senses current sense pins CS
Charging current and the second preset value, to judge whether charging current is less than the second preset value.When charging current is pre- less than second
If during value, control unit 500 starts to judge whether charging current continues the 4th preset time less than the state of the second preset value.If
The state that charging current is less than the second preset value has continued the 4th preset time, then control unit 500 can stop entering battery BA
Horizontal pulse charging operations and reflection charging operations.
For example, as the charging current I in Fig. 7CHAIt is less than the second preset value for the first time in pulse charge operation
IREFLEX_DISWhen, control unit 500 judges charging current ICHALess than the first preset value IREFLEX_DISState duration
Less than the second preset time tTR_DIS, battery BA is represented not yet by full charging.Now control unit 500 is persistently carried out to battery BA
Pulse charge operates and reflection charging operations.Second preset time tTR_DISCan be 50 milliseconds of (msec)~2 second (sec), but not
As limit.
As the charging current I in Fig. 7CHAIt is less than the second preset value I for the second time in pulse charge operationREFLEX_DISWhen, control
Unit 500 processed judges charging current ICHALess than the second preset value IREFLEX_DISState duration it is default up to second
Time tTR_DIS, battery BA is represented by full charging.Now, control unit 500 stop to battery BA carry out pulse charge operation and
Charging operations are reflected, then, charger performs next charging operations program, i.e. constant-voltage charge pattern.
In the reflection charging operations of previous embodiment, discharge switch M3 SECO and charge switch M1 sequential are same
Walk but inverting each other, that is, when charge switch M1 opens (conducting), discharge switch M3 may turn off and (be not turned on), otherwise also
So.As shown in fig. 7, in time tREFLEX_OFFSection, battery protection integrated circuit 50 do not charge to battery BA, now, fill
Electric switch M1 closes (being not turned on), and control unit 500 controls discharge switch M3 conductings so that battery BA passes through the pin LO that discharges
Discharged with discharge switch M3.In time tREFLEX_ONSection, control unit 500 controls charge switch M1 conductings, with to battery
BA is charged, and now, control unit 500 controls discharge switch M3 to close, and battery BA can not pass through pin LO electric discharges of discharging.
In the reflection charging operations of practical application, in addition to the above described embodiments, control unit 500 also can control charging
M1 and discharge switch M3 alternate conductions are switched, or control charge switch M1 and discharge switch M3 is interior during one does not charge while closes
Close, but be not limited.
As shown in Figure 8 A, it is assumed that the charging current of battery charging is just and is negative to the discharge current of battery discharge.
Reflect under charge mode, the cycle T of its charging current includes the constant-current charge time TP and not charging interval TD being spaced.
In charging interval TP, charge switch M1 is turned on to be charged to battery；Not in charging interval TD, charge switch M1 disconnects
To stop charging to battery.Include a bit of discharge time TN in not charging interval TD, battery by discharge pin LO with
Discharge switch M3 is discharged.
As shown in Figure 8 B, in the case where reflecting charge mode, the cycle T of charging current includes constant-current charge time TP, not filled
Electric time TD and a bit of discharge time TN.In charging interval TP, charge switch M1 is turned on to be charged to battery；Not
In charging interval TD, charge switch M1 is disconnected to stop charging to battery.Discharge pin LO outside the charging interval one
A little electric discharge is carried out to battery in segment discharge time TN so that the carrier concentration of inside battery can tend to be average more quickly
Distribution.
Another preferred embodiment according to the present invention is a kind of battery protecting method, the electricity suitable for battery module
Pond protection circuit, the battery module include battery and charge switch, and the battery couples the charge switch.Battery protecting method to
The battery that protection is charged by charger, battery protecting method comprise the steps of.
Step S12：Sense the charging current of battery；
Step S14：Judge whether charging current is more than the first preset value and continues the first preset time；And
Step S16：If step S14 judged result is yes, control charge switch is with to battery progress pulse charge operation.
In step s 16, battery protecting method can also provide reflection charging operations, to operate charge switch and discharge switch.
Next the detailed operating process of the battery protecting method of this case will be illustrated by an embodiment.Such as Figure 10 institutes
Show, battery protecting method can first carry out step S20, and the ON time of upper current limit and charge switch is determined according to non-essential resistance.
Then step S22 is performed, judges whether charging current is just.
If step S22 judged result is yes, represents that battery is in charged state, then step S24 is performed, by current settings
Pin sets charging current according to its non-essential resistance, and enters precharge mode.In step S26, battery protecting method can be felt
Survey charging current and judge whether charging current is more than the first preset value.First preset value can be less than overcurrent protection during charging
Current threshold.
If step S26 judged result is yes, step S28 is performed, judges that charging current is more than the shape of the first preset value
Whether the duration of state is more than the first preset time.If step S26 and S28 judged result are no, battery protecting method
Step S24 can be returned to.
If step S28 judged result is yes, step S30 is performed, into reflection charge mode, is set by the opening time
Pin and shut-in time setting pin set opening time and shut-in time according to its non-essential resistance respectively, are opened with operating charging
Close.
In step s 32, battery protecting method can judge whether charging current is less than the second preset value.If step S32's
Judged result is yes, then performs step S34, judges whether charging current is more than less than the duration of the state of the second preset value
Second preset time.If step S34 judged result is yes, step S36 is performed, terminates reflection charge mode.If step S32
And S34 judged result is no, then battery protecting method can return to step S30.
By the above detailed description of preferred embodiments, it is intended to more clearly describe the feature of the present invention with spiritual,
And not scope of the invention is any limitation as with above-mentioned disclosed preferred embodiment.On the contrary, the purpose is to uncommon
Various changes can be covered and have being arranged in the category of the scope of the claims to be applied of the invention of equality by hoping.
Claims (17)
1. a kind of battery protection integrated circuit, being coupled between a battery and a charger, and couple a charge switch, its feature
It is, above-mentioned battery protection integrated circuit includes：
One charge switch controls pin, couples above-mentioned charge switch；
One control unit, couple above-mentioned charge switch control pin；And
One current sense pins, above-mentioned control unit is coupled, to sense a charging current；
Wherein, when above-mentioned charging current is more than one first preset value and continues first preset time, above-mentioned control unit control
Make above-mentioned charge switch and turn on one second preset time with closing one the 3rd preset time, filled with carrying out a pulse to above-mentioned battery
It is electrically operated；
Wherein, above-mentioned first preset value is less than an overcurrent protection electric current preset value.
2. battery protection integrated circuit as claimed in claim 1, it is characterised in that above-mentioned battery protection integrated circuit also wraps
Contain：
One discharge switch；And
One electric discharge pin, couples above-mentioned discharge switch；
Wherein, when above-mentioned battery protection integrated circuit provides above-mentioned pulse charge operation, above-mentioned battery protection integrated circuit is also
A reflection charging operations are provided, to operate above-mentioned charge switch and above-mentioned discharge switch.
3. battery protection integrated circuit as claimed in claim 2, it is characterised in that above-mentioned in above-mentioned reflection charging operations
Control unit controls above-mentioned charge switch and above-mentioned discharge switch alternate conduction.
4. battery protection integrated circuit as claimed in claim 2, it is characterised in that in above-mentioned reflection charging operations, one
During not charging, above-mentioned control unit controls above-mentioned charge switch to be simultaneously closed off with above-mentioned discharge switch.
5. battery protection integrated circuit as claimed in claim 1, it is characterised in that when above-mentioned charging current is pre- less than one second
If value and when continuing four preset time, above-mentioned control unit stops carrying out above-mentioned pulse charge operation to above-mentioned battery.
6. battery protection integrated circuit as claimed in claim 1, it is characterised in that above-mentioned battery protection integrated circuit also wraps
Contain：
Multiple charge parameters set pin, and each charge parameter setting pin couples an external setting-up parameters unit.
7. a kind of battery protecting circuit, it is coupled between a battery and a charger, it is characterised in that above-mentioned battery protecting circuit
Comprising：
One charge switch；
One external discharge switchs, and concatenates above-mentioned charge switch, and be coupled between above-mentioned charge switch and above-mentioned battery；
One control unit, couple said external discharge switch and above-mentioned charge switch；And
One current sensing unit, above-mentioned control unit is coupled, to sense a charging current of the above-mentioned charger to above-mentioned battery；
Wherein, when above-mentioned charging current is more than one first preset value and continues first preset time, above-mentioned control unit control
Make above-mentioned charge switch and turn on the second preset time repeatedly with closing the 3rd preset time, filled with carrying out a pulse to above-mentioned battery
It is electrically operated.
8. battery protecting circuit as claimed in claim 7, it is characterised in that above-mentioned battery protecting circuit is also opened comprising an electric discharge
Close, be coupled between above-mentioned battery and ground connection, wherein when above-mentioned battery protecting circuit provides above-mentioned pulse charge operation, it is above-mentioned
Control unit controls above-mentioned discharge switch and above-mentioned charge switch, to provide a reflection charging operations.
9. battery protecting circuit as claimed in claim 8, it is characterised in that in above-mentioned reflection charging operations, above-mentioned control
Unit controls above-mentioned charge switch and above-mentioned discharge switch alternate conduction.
10. battery protecting circuit as claimed in claim 8, it is characterised in that in above-mentioned reflection charging operations, do not filled one
During electricity, above-mentioned control unit controls above-mentioned charge switch to be simultaneously closed off with above-mentioned discharge switch.
11. battery protecting circuit as claimed in claim 7, it is characterised in that preset when above-mentioned charging current is less than one second
When being worth and continuing four preset time, above-mentioned control unit stops carrying out above-mentioned pulse charge operation to above-mentioned battery.
12. battery protecting circuit as claimed in claim 7, it is characterised in that above-mentioned first preset value is less than an over current protection
Protect electric current preset value.
13. a kind of battery protecting method, the battery protecting circuit suitable for a battery module, it is characterised in that above-mentioned battery
Module includes a battery and a charge switch, wherein above-mentioned battery couples above-mentioned charge switch, above-mentioned battery protecting method includes
The following steps：
(a) charging current of above-mentioned battery is sensed；
(b) judge whether above-mentioned charging current is more than one first preset value and continues one first preset time；And
If (c) judged result of step (b) is yes, above-mentioned charge switch is controlled to turn on one second preset time repeatedly with closing one
3rd preset time, to carry out a pulse charge operation to above-mentioned battery；
Wherein, above-mentioned first preset value is less than an overcurrent protection electric current preset value.
14. battery protecting method as claimed in claim 13, it is characterised in that in step (c), above-mentioned battery protecting method
A reflection charging operations are also provided, to operate a discharge switch, wherein above-mentioned discharge switch is coupled to above-mentioned battery and a ground connection
Between end.
15. battery protecting method as claimed in claim 14, it is characterised in that in above-mentioned reflection charging operations, above-mentioned electricity
Pond guard method controls above-mentioned charge switch and above-mentioned discharge switch alternate conduction.
16. battery protecting method as claimed in claim 14, it is characterised in that in above-mentioned reflection charging operations, one not
During charging, above-mentioned battery protecting method controls above-mentioned charge switch to be simultaneously closed off with above-mentioned discharge switch.
17. battery protecting method as claimed in claim 13, it is characterised in that preset when above-mentioned charging current is less than one second
When being worth and continuing second preset time, above-mentioned battery protecting method stops carrying out above-mentioned pulse charge operation to above-mentioned battery.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105129872 | 2016-09-13 | ||
| TW105129872A TW201813230A (en) | 2016-09-13 | 2016-09-13 | Battery protection integrated circuit, protection circuit and protection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107819338A true CN107819338A (en) | 2018-03-20 |
Family
ID=61600839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610956149.6A Pending CN107819338A (en) | 2016-09-13 | 2016-10-26 | Battery protection integrated circuit, and protection circuit and protection method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107819338A (en) |
| TW (1) | TW201813230A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896928A (en) * | 2018-07-20 | 2018-11-27 | 深圳市道通智能航空技术有限公司 | Evaluation method, device, battery core, battery and the aircraft of remaining battery time |
-
2016
- 2016-09-13 TW TW105129872A patent/TW201813230A/en unknown
- 2016-10-26 CN CN201610956149.6A patent/CN107819338A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896928A (en) * | 2018-07-20 | 2018-11-27 | 深圳市道通智能航空技术有限公司 | Evaluation method, device, battery core, battery and the aircraft of remaining battery time |
| CN108896928B (en) * | 2018-07-20 | 2020-12-08 | 深圳市道通智能航空技术有限公司 | Estimation method and device of battery remaining time, battery cell, battery and aircraft |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201813230A (en) | 2018-04-01 |
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Application publication date: 20180320 |