CN106058961A - Rechargeable battery, charging management circuit, electronic device and charger - Google Patents
Rechargeable battery, charging management circuit, electronic device and charger Download PDFInfo
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- CN106058961A CN106058961A CN201610379212.4A CN201610379212A CN106058961A CN 106058961 A CN106058961 A CN 106058961A CN 201610379212 A CN201610379212 A CN 201610379212A CN 106058961 A CN106058961 A CN 106058961A
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- 238000007600 charging Methods 0.000 title claims abstract description 49
- 230000005611 electricity Effects 0.000 claims description 47
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 abstract description 19
- 238000010280 constant potential charging Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- H02J7/0086—
-
- 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
- H02J7/00302—Overcharge protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a rechargeable battery, which comprises a cathode mix, a protection circuit, a coulometer chip, a shell accommodating the cathode mix, the protection circuit and the coulometer chip, and at least three contact pieces arranged on the shell, wherein the protection circuit comprises a first switching element; the cathode mix comprises a first electrode and a second electrode, the first electrode is connected with the first contact piece via the protection circuit, the first electrode and the first contact piece are directly or indirectly connected with the first switching element respectively, and the second electrode is connected with the second contact piece via the protection circuit; the first interface of the coulometer chip is connected with the first electrode, the second interface is connected with the second electrode, and the third interface is connected with the third contact piece. The invention also discloses a charging management circuit, an electronic device and a charger. Through the above mode, the cathode mix voltage can be directly acquired, influences from contact impedance between the first switching element in the protection circuit, an external detection circuit and the third contact piece do not exist, the battery voltage detection accuracy is improved, and the charging control precision is improved.
Description
Technical field
The present invention relates to battery, particularly relate to a kind of rechargeable battery, charge management circuit, electronic equipment and charging
Device.
Background technology
Lithium battery is a kind of rechargeable battery, has that energy density is high and free of contamination advantage, at notebook computer, mobile phone
Extensively apply Deng in electronic equipment.Lithium battery in use can not overcharge, cross and put, and otherwise can damage battery or be allowed to scrap, because of
This, inside battery is provided with protection circuit, and at least provided with a switch element in protection circuit, switch elements in series is at battery core electrode
And between corresponding battery contact.
The charging process of lithium battery can be divided into four-stage: trickle preliminary filling, constant-current charge, constant-voltage charge and charging are eventually
Only.Existing lithium cell charging control circuit is use battery voltage detection mode to control charging process, and detects electricity
Contact and the contact of charging use that cell voltage uses are identical.
Present inventor finds, owing at least there is a switch element in charging circuit, additionally there may be it
His element such as filter inductance, the physical characteristic of these elements itself causes existing on it pressure drop, and charger pole piece and electricity
There is contact impedance in pond pole piece, also can produce pressure drop so that the cell voltage detected is more than the virtual voltage of battery core in battery,
Impact charging control accuracy.Such as, when the charging that the cell voltage detected arrives battery limits voltage, charging control circuit
Control lithium battery and proceed to constant voltage charging phase from constant-current charging phase, and reduce charging current, but the actual electricity of now battery core
Pressure limits voltage less than the charging of battery, and battery is not fully filled reduction charging current or the charging interval is elongated.
Summary of the invention
The technical problem that present invention mainly solves be to provide a kind of rechargeable battery, charge management circuit, electronic equipment and
Charger, it is possible to solve the inaccurate problem of battery voltage detection in prior art.
In order to solve above-mentioned technical problem, first aspect present invention provides a kind of rechargeable battery, including: battery core, protection
Circuit and coulant meter chip, accommodate battery core, protection circuit and the housing of coulant meter chip, and be arranged at least three on housing
Individual contact；Protection circuit includes the first switch element, and battery core includes the first electrode, the second electrode, and the first electrode is by protection electricity
Road connects the first contact, and the first electrode and the first contact the most directly or indirectly connect the first switch element, the second electrode
The second wafer is connected by protection circuit；Wherein coulant meter chip includes first interface, the second interface and the 3rd interface, and first connects
Mouth connects the first electrode, and the second interface connects the second electrode, and the 3rd interface connects the third wafer.
In conjunction with first aspect, in the first possible embodiment of first aspect, battery farther includes to transmit core
Sheet, at least one input port of transmission chip connects the 3rd interface of coulant meter chip, and the output port of transmission chip connects
The third wafer；Transmission chip for obtaining the parameter of battery core from coulant meter chip, and parameter includes electricity and voltage.
In conjunction with the first possible embodiment of first aspect, the embodiment that the second in first aspect is possible
In, transmission chip is further used for, by the third wafer, parameter is sent to outer member, and outer member is the electricity using battery
At least one in control chip in the display screen of subset, charge management circuit.
In order to solve above-mentioned technical problem, second aspect present invention provides a kind of rechargeable battery, including: battery core and protection
Circuit, accommodates battery core and the housing of protection circuit, and at least three contact being arranged on housing；Protection circuit includes first
Switch element, battery core includes the first electrode, the second electrode, and the first electrode connects the first contact, and first by protection circuit
Electrode and the first contact the most directly or indirectly connect the first switch element, and the second electrode connects second by protection circuit and touches
Sheet；Wherein the first electrode connects the third wafer further around protection circuit, and the third wafer is to detect for outer detecting circuit
The interface of the voltage of battery core.
In conjunction with second aspect, in the first possible embodiment of second aspect, the first electrode is by electric fuse even
Connect the third wafer.
In conjunction with the first possible embodiment of second aspect, the embodiment that the second in second aspect is possible
In, electric fuse is resettable fuse.
In order to solve above-mentioned technical problem, third aspect present invention provides a kind of charge management circuit, including: control chip
With second switch element, the input of control chip connects first aspect present invention or any one possible embodiment party of first aspect
The third wafer of the battery provided in formula, the outfan of control chip connects the control end of second switch element, second switch unit
First connection end of part connects power supply, and the second connection end of second switch element connects battery；Control chip is for by the 3rd
Contact obtains the parameter of battery, and parameter includes electricity and voltage, voltage and first voltage threshold of battery is compared, first
Voltage threshold is that the charging of battery limits voltage；If the voltage of battery is less than the first voltage threshold, then with default electric current to electricity
Pond carries out constant-current charge；If the voltage of battery is more than or equal to the first voltage threshold, then with the first voltage threshold for charging voltage pair
Battery carries out constant-voltage charge, and is compared with at full charge by the electricity of battery；If the electricity of battery is more than or equal to fully charged
Amount then controls second switch element and disconnects stopping charging.
In conjunction with the third aspect, in the first possible embodiment of the third aspect, control chip is further used for
After control second switch element disconnects to stop charging, voltage and second voltage threshold of battery are compared, if battery
Voltage is less than the second voltage threshold, then control second switch element conductive is to be again charged battery, wherein the second voltage
Threshold value is less than the first voltage threshold；Or electricity and first power threshold of battery are compared, if the electricity of battery is less than the
One power threshold, then control second switch element conductive is to be again charged battery, and wherein the first power threshold is less than filling
Full Charge Capacity.
In conjunction with the third aspect, in the embodiment that the second of the third aspect is possible, control chip be further used for by
The parameter of battery is sent to use display screen or other electronic equipments of the electronic equipment of battery.
In order to solve above-mentioned technical problem, fourth aspect present invention provides a kind of charge management circuit, including: control chip
With second switch element, the input of control chip connects second aspect present invention or any one possible embodiment party of second aspect
The third wafer of the battery provided in formula, the outfan of control chip connects the control end of second switch element, second switch unit
First connection end of part connects power supply, and the second connection end of second switch element connects battery.
In order to solve above-mentioned technical problem, fifth aspect present invention provides a kind of electronic equipment, including: the electricity being sequentially connected with
Pond and charge management circuit, battery is the electricity provided in first aspect present invention or any one possible embodiment of first aspect
Pond, charge management circuit is the Charge Management provided in third aspect present invention or any one possible embodiment of the third aspect
Circuit.
In order to solve above-mentioned technical problem, sixth aspect present invention provides a kind of electronic equipment, including: the electricity being sequentially connected with
Pond and charge management circuit, battery is the electricity provided in second aspect present invention or any one possible embodiment of second aspect
Pond, the charge management circuit that charge management circuit provides for fourth aspect present invention.
In order to solve above-mentioned technical problem, seventh aspect present invention provides a kind of charger, including: change-over circuit and Ben Fa
The charge management circuit that the bright third aspect or any one possible embodiment of the third aspect or fourth aspect provide, change-over circuit
Outfan connect the first connection end of second switch element in charge management circuit, change-over circuit is for changing external power supply
For DC source.
The invention has the beneficial effects as follows: by arranging coulant meter chip in the battery, the first interface of coulant meter chip is even
Connecing the first electrode of battery core, the second interface connects the second electrode of battery core so that coulant meter chip can get around protection circuit inspection
Surveying the voltage of battery core, and be transferred to the third wafer by the 3rd interface, the outer detecting circuit connecting the third wafer can be direct
Obtain battery core voltage from coulant meter chip, the first switch element and outer detecting circuit and the 3rd in circuit will not be protected and touch
The impact of contact impedance between sheet, improves the accuracy in detection of cell voltage, improves charging control accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of rechargeable battery first embodiment of the present invention；
Fig. 2 is the structural representation that one embodiment of rechargeable battery of the present invention includes transmitting chip；
Fig. 3 is the structural representation of rechargeable battery the second embodiment of the present invention；
Fig. 4 is the structural representation of charge management circuit first embodiment of the present invention；
Fig. 5 is the structural representation of charge management circuit the second embodiment of the present invention；
Fig. 6 is the structural representation of electronic equipment first embodiment of the present invention；
Fig. 7 is the structural representation of electronic equipment the second embodiment of the present invention；
Fig. 8 is the structural representation of charger first embodiment of the present invention.
Detailed description of the invention
As it is shown in figure 1, the first embodiment of rechargeable battery of the present invention includes:
Battery core 11, protection circuit 12, coulant meter chip 13, accommodate battery core 11, protection circuit 12 and coulant meter chip 13
Housing 10, and three contacts 101,102 and 103 being arranged on housing 10.In figure, the shapes and sizes of each several part are only shown
Meaning.
Battery core 11 includes the first electrode 111 and the second electrode 112, the first electrode 111 and the second electrode 112, and one of them is
Positive pole, another is negative pole, and the first electrode 111 connects the first contact 101 by protection circuit 12, and the second electrode 112 is by protecting
Protection circuit 12 connects the second wafer 102.
Protection circuit 12 includes the first switch element 121 and protection chip 122, and the control end of the first switch element 121 is even
Meeting the outfan P2.1 of protection chip 122, the first connection end of the first switch element 121 connects the first contact 101, and second connects
End connects the first electrode 111.First switch element 121 can be PMOS, switch chip etc..The first switch element drawn in figure
121 and first are all directly connected between contact the 101, first electrode 111, and actual can also be to be indirectly connected with, the i.e. first switch
Being in series with other elements between element 121 and first contact the 101, first electrode 111, such as electric fuse, filter inductance, other open
Close element etc..Protection chip 122 shown in figure obtains the voltage letter of battery core 11 from the 3rd interface P1.3 of coulant meter chip 13
Breath, the actual voltage that can also be detected battery core 11 by protection chip 122 voluntarily.
Coulant meter chip 13 includes first interface P1.1, the second interface P1.2, the 3rd interface P1.3.First interface P1.1 is even
Connecing the first electrode 111, the second interface P1.2 connects the second electrode 112, and the 3rd interface P1.3 connects the third wafer 103.Coulant meter
Chip 13 directly obtains the voltage of battery core 11 from first interface P1.1 and the second interface P1.2, and is sent by the 3rd interface P1.3
To the third wafer 103 and the input P2.2 of protection chip 122.First interface P1.1 shown in drawing and the second interface P1.2 is
It is directly to the electrode of battery core 11, actual directly can also connect at least two at the first electrode 111 and the second electrode 112
Resistance, coulant meter chip 13 is by a part of resistance in the resistance of first interface P1.1 and the second interface P1.2 measurement series connection
Voltage thus calculate the voltage of battery core 11.
Coulant meter chip 13 farther includes the 4th interface P1.4, for connecting one end of detection resistance R1, detects resistance
The other end of R1 connects the second electrode 112.One end of detection resistance R1 shown in figure is directly connected to the second electrode 112, actual
Can also be in series with other elements between detection resistance R1 and the second electrode 112, now one end of detection resistance R1 connects the 4th
Interface P1.4, the other end connects another input interface of coulant meter chip 13.Detection resistance R1 in figure is connected on the second electrode
Between 112 and the second wafer 102, actually detected resistance R1 can also be connected between the first electrode 111 and the first contact 101.
Detection resistance R1 is the resistance of the little impedance of high accuracy, and coulant meter chip 13 measures the voltage at detection resistance R1 two ends, according to detection
The resistance of resistance R1 can calculate the electric current of battery core, is integrated electric current calculating the electricity that can obtain battery core, and by it
Send.Information about power can be sent by coulant meter chip 13 by the 3rd interface P1.3, it is also possible to defeated by other
Outgoing interface sends.
Housing 10 shown in figure is provided with three contacts 101,102 and 103, and the quantity of actual contact can be more, example
Such as the 4th contact (being not drawn in figure) for transmitting battery temperature information.Battery core shown in figure only has a joint, actual battery core
Quantity can be more.When the quantity of battery core is more than or equal to two, coulant meter chip 13 can obtain the parameter of the core that often economizes on electricity respectively,
All battery cores can also be considered as an entirety to detect.
By the enforcement of above-described embodiment, coulant meter chip 13, the first interface of coulant meter chip 13 are set in the battery
P1.1 connects the first electrode 111 of battery core 11, and the second interface P1.2 connects the second electrode 112 of battery core 11 so that coulant meter core
The protection circuit 12 that can get around sheet 13 detects the voltage of battery core 11, and is transferred to the third wafer 103 by the 3rd interface P1.3, even
The outer detecting circuit connecing the third wafer 103 directly can obtain the voltage of battery core 11 from coulant meter chip 13, will not be protected
In protection circuit 12, the impact of contact impedance between the first switch element 121 and outer detecting circuit and the third wafer 103, carries
The accuracy in detection of high cell voltage, improves charging control accuracy.
As in figure 2 it is shown, in an embodiment of rechargeable battery of the present invention, battery farther includes to transmit chip 14,
The input port of transmission chip 14 connects the 3rd interface P1.3 of coulant meter chip 13, and the output port of transmission chip 14 connects the
Three contacts 103.Transmission chip 14 for obtaining the parameter of battery core 11 from coulant meter chip 13, and parameter includes electricity and voltage, and
By the third wafer 103, parameter being sent to outer member, outer member is to use the display screen of electronic equipment of battery, charging
At least one in control chip in management circuit.The parameter of battery core 11 may further include electric current, temperature.Transmission chip
14 when being sent to the display screen using the electronic equipment of battery by the parameter of battery core 11, can show battery the most in real time
The parameter of battery core, it is simple to user monitoring battery status, and provide prompting at the end of charging.
One input port of the transmission chip 14 shown in figure connects the 3rd interface P1.3 of coulant meter chip 13
Obtaining the parameter of battery core 11, the input port quantity of actual transmissions chip 14 can be more, and connect coulant meter chip respectively
The output interface of output battery core 11 parameter of 13.Transmission chip 14 shown in figure is an independent element, actual transmissions core
Sheet 14 can also integrate with protection chip 122.
As it is shown on figure 3, the second embodiment of rechargeable battery of the present invention includes:
Battery core 21, protection circuit 22, accommodate battery core 21 and the housing 20 of protection circuit 22, and be arranged on housing 20
Three contacts 201,202 and 203.In figure, the shapes and sizes of each several part are only signal.
Battery core 21 includes the first electrode 211 and the second electrode 212, the first electrode 211 and the second electrode 212, and one of them is
Positive pole, another is negative pole, and the first electrode 211 connects the first contact 201 by protection circuit 22, and the second electrode 212 is by protecting
Protection circuit 22 connects the second wafer 202.
Protection circuit 22 includes the first switch element 221 and protection chip 222, and the control end of the first switch element 221 is even
Connecing the outfan of protection chip 222, the first connection end of the first switch element 221 connects the first contact 201, and second connects end even
Connect the first electrode 211.First switch element 221 can be PMOS, switch chip etc..The first switch element 221 drawn in figure
With first be all directly connected between contact the 201, first electrode 211, actual can also be to be indirectly connected with, the i.e. first switch element
221 and first are in series with other elements between contact the 201, first electrode 211, such as electric fuse, filter inductance, other switch unit
Part etc..
First electrode 211 connects the third wafer 203 further around protection circuit 22, and the third wafer 203 is for for outside
The interface of the voltage of testing circuit detection battery core 21.Make to prevent short circuit between the first contact 201 and the third wafer 203
The cell damage that becomes, burn, the situation such as blast, between the third wafer 203 and the first electrode 211, be in series with electric fuse 23.?
In one embodiment of rechargeable battery of the present invention, electric fuse 23 is resettable fuse, can become high resistant when circuit overloads
State, reduces electric current and plays a protective role, and circuit recover normal after be automatically restored to low resistance state, now circuit can normal work
Make, need not manually change.
Housing 20 shown in figure is provided with three contacts 201,202 and 203, and the quantity of actual contact can be more, example
Such as the 4th contact (being not drawn in figure) for transmitting battery temperature information.Battery core shown in figure only has a joint, actual battery core
Quantity can be more.When the quantity of battery core is more than or equal to two, more contact can be set to connect each battery core respectively, it is also possible to
All battery cores are considered as an entirety be attached and detect.
By the enforcement of above-described embodiment, arranging the third wafer 203 in the battery, the third wafer 203 gets around protection circuit
22 the first electrodes 211 connecting battery core 21, outer detecting circuit connects the third wafer 203 and can examine without protection circuit 22
Measuring the voltage of battery core 21, will not be protected the impact of the first switch element 221 conduction voltage drop in circuit 22, raising detects
The accuracy of cell voltage, improve charging control accuracy.
As shown in Figure 4, the first embodiment of charge management circuit of the present invention includes: control chip 31 and second switch element
32。
The input P3.1 of control chip 31 connects the third wafer 333 of battery 33, and wherein battery 33 can fill for the present invention
The battery provided in electricity battery first embodiment, the outfan P3.2 of control chip 31 connects the control of second switch element 32
End, the first connection end of second switch element 32 connects power supply 34, and the second connection end of second switch element connects battery 33
First electrode 331.Control chip 31 for obtaining the parameter of battery 33 by the third wafer 333, and parameter includes electricity and voltage,
And according to the state modulator of battery 33 charging process to battery 33.
Specifically, voltage and first voltage threshold of battery 33 are compared by control chip 31, the first voltage threshold
Charging for battery 33 limits voltage, if the voltage of battery 33 is less than the first voltage threshold, then with default current versus cell 33
Carrying out constant-current charge, now the voltage of battery 33 is gradually increasing.Certainly, before constant-current charge, if the brownout of battery 33,
Need first to carry out trickle preliminary filling with a less current versus cell 33.
After the voltage of battery 33 rises to more than or equal to the first voltage threshold, control chip 31 with the first voltage threshold is
Charging voltage carries out constant-voltage charge to battery 33, and progressively reduces charging current.After entering constant voltage charging phase, control chip
The electricity of battery 33 is compared by 31 with the at full charge of battery 33, if the electricity of battery 33 is more than or equal at full charge, controls
Second switch element 32 processed disconnects stopping charging.Total electricity when being full of for battery 33 at full charge, when battery 33 dispatches from the factory, its
The rated capacity that should be its nominal at full charge, meeting at full charge is by use time, discharge and recharge number of times, ambient temperature, electric discharge electricity
The factors such as stream produce change, and control chip 31 can calculate full according to the parameter that the coulant meter chip from battery 33 obtains
Electricity.
Control chip 31 can receive the parameter that the coulant meter chip (being not drawn in figure) in battery 33 sends, it is also possible to main
Dynamic reading parameter from coulant meter chip.The parameter of battery 33 can farther include electric current and/or temperature.Parameter when battery 33
During including temperature, if the temperature of battery 33 is more than the threshold value preset, control chip 31 can reduce charging current and even stop filling
Electricity.
By the enforcement of above-described embodiment, the control chip 31 in charge management circuit 30 is permissible by the third wafer 333
Directly the coulant meter chip from battery 33 obtains the parameter of battery 33, will not be by the element in charging circuit and Charge Management
The impact of contact impedance between circuit 30 and the third wafer 333, improves the accuracy in detection of cell voltage, improves charging and controls essence
Degree, increases the constant-current charge time.And at constant voltage charging phase, control chip 31 judges whether complete charge according to electricity,
Compared to existing judge according to constant voltage charging time or charging current more accurate.
In an embodiment of charge management circuit of the present invention, control chip 31 is further used for controlling second switch
After element 32 disconnects to stop charging, voltage and second voltage threshold of battery 33 are compared, if the voltage of battery 33 is little
In the second voltage threshold, then control second switch element conductive 32 is to be again charged battery 33, wherein the second voltage threshold
What value was battery 33 recharges voltage, less than the first voltage threshold.Or electricity and first power threshold of battery 33 are carried out
Relatively, if the electricity of battery 33 is less than the first power threshold, then controls second switch element 32 and turn on again battery 33 to be entered
Row charging, wherein the first power threshold be battery 33 recharge electricity, less than at full charge.
In an embodiment of charge management circuit of the present invention, control chip 31 can be further used for the ginseng of battery 33
Number is sent to display screen and/or other equipment shows, in order to user monitoring battery status, and is given at the end of charging and carries
Show.Now charge management circuit 30 farther includes to send the required element of parameter, such as data interface unit, is used for being sent to
The bluetooth of other equipment/WiFi transmitting element etc..Additionally, charge management circuit 30 can farther include other elements, such as
Pressure unit, being used for the Voltage Cortrol of power supply 34 is the voltage being suitable for being charged battery 33, and filter unit etc..
As it is shown in figure 5, the second embodiment of charge management circuit of the present invention includes: control chip 41 and second switch element
42。
The input P4.1 of control chip 41 connects the third wafer 433 of battery 43, and wherein battery 43 can fill for the present invention
The battery provided in electricity battery the second embodiment, the outfan P4.2 of control chip 41 connects the control of second switch element 42
End, the first connection end of second switch element 42 connects power supply 44, and the second connection end of second switch element connects battery 43
First electrode 431.Control chip 41 for measuring the voltage of battery 43 by the third wafer 433.
Charge management circuit 40 can farther include other elements, such as pressure unit, filter unit etc..
By the enforcement of above-described embodiment, the control chip 41 in charge management circuit 40 is permissible by the third wafer 433
Directly measure the voltage of battery core in battery 43, will not be affected by the element in charging circuit, improve the detection of cell voltage
Accuracy, improves charging control accuracy.
As shown in Figure 6, the first embodiment of electronic equipment of the present invention includes: the battery 51 being sequentially connected with and Charge Management electricity
Road 52, wherein battery 51 is the battery provided in rechargeable battery first embodiment of the present invention, and charge management circuit 52 is this
The charge management circuit provided in bright charge management circuit first embodiment, its concrete structure and connected mode see corresponding enforcement
Description in example, does not repeats them here.Electronic equipment can be mobile phone, transmitter receiver, panel computer, notebook computer, camera, broadcast
Put device etc..
By the enforcement of above-described embodiment, charge management circuit 52 can the direct electricity from battery by the third wafer
Meter chip obtains the parameter of battery 51, will not be by the element in charging circuit with between charge management circuit 52 and the third wafer
The impact of contact impedance, improves the accuracy in detection of battery 51 voltage, improves charging control accuracy, increases the constant-current charge time.
And the control chip in constant voltage charging phase, charge management circuit 52 judges whether complete charge according to electricity, compares
In existing judge according to constant voltage charging time or charging current more accurate.
As it is shown in fig. 7, the second embodiment of electronic equipment of the present invention includes: the battery 61 being sequentially connected with and Charge Management electricity
Road 62, wherein battery 61 is the battery provided in rechargeable battery the second embodiment of the present invention, and charge management circuit 62 is this
The charge management circuit provided in bright charge management circuit the second embodiment, its concrete structure and connected mode see corresponding enforcement
Description in example, does not repeats them here.Electronic equipment can be mobile phone, transmitter receiver, panel computer, notebook computer, camera, broadcast
Put device etc..
By the enforcement of above-described embodiment, charge management circuit 62 can directly measure electricity in battery 61 by the third wafer
The voltage of core, will not be affected by element in charging circuit, improves the accuracy in detection of battery 61 voltage, improves charging and controls
Precision.
As shown in Figure 8, the first embodiment of charger of the present invention includes: change-over circuit 71 and charge management circuit 72, fills
Fulgurite reason circuit 72 is the charge management circuit provided in charge management circuit any embodiment of the present invention, and its concrete structure sees
Description in corresponding embodiment.The outfan of change-over circuit 71 connects the of second switch element 722 in charge management circuit 72
One connects end, and change-over circuit 71 is for being converted to DC source by external power supply.
The foregoing is only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in what other were correlated with
Technical field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (13)
1. a rechargeable battery, it is characterised in that including:
Battery core, protection circuit and coulant meter chip, accommodate described battery core, described protection circuit and the shell of described coulant meter chip
Body, and at least three contact being arranged on described housing；
Described protection circuit includes that the first switch element, described battery core include the first electrode, the second electrode, and described first electrode leads to
Cross described protection circuit and connect the first contact, and described first electrode and described first contact the most directly or indirectly connect institute
Stating the first switch element, described second electrode connects the second wafer by described protection circuit；
Wherein said coulant meter chip includes first interface, the second interface and the 3rd interface, and described first interface connects described the
One electrode, described second interface connects described second electrode, and described 3rd interface connects described the third wafer.
Battery the most according to claim 1, it is characterised in that
Described battery farther includes to transmit chip, and at least one input port of described transmission chip connects described coulant meter core
3rd interface of sheet, the output port of described transmission chip connects described the third wafer；
Described transmission chip for obtaining the parameter of described battery core from described coulant meter chip, and described parameter includes electricity and electricity
Pressure.
Battery the most according to claim 2, it is characterised in that
Described transmission chip is further used for sending the parameters to outer member, described outside unit by described the third wafer
Part is to use at least one in the control chip in the display screen of electronic equipment of described battery, charge management circuit.
4. a rechargeable battery, it is characterised in that including:
Battery core and protection circuit, accommodate described battery core and the housing of described protection circuit, and be arranged on described housing extremely
Few three contacts；
Described protection circuit includes that the first switch element, described battery core include the first electrode, the second electrode, and described first electrode leads to
Cross described protection circuit and connect the first contact, and described first electrode and described first contact the most directly or indirectly connect institute
Stating the first switch element, described second electrode connects the second wafer by described protection circuit；
Wherein said first electrode connects the third wafer further around described protection circuit, and described the third wafer is for for outside
Testing circuit detects the interface of the voltage of described battery core.
Battery the most according to claim 4, it is characterised in that
Described first electrode connects described the third wafer by electric fuse.
Battery the most according to claim 5, it is characterised in that
Described electric fuse is resettable fuse.
7. a charge management circuit, it is characterised in that including:
Control chip and second switch element, the input of described control chip connects according to any one of claim 1-3
The third wafer of battery, the outfan of described control chip connects the control end of described second switch element, described second switch
First connection end of element connects power supply, and the second connection end of described second switch element connects described battery；
Described control chip for obtaining the parameter of described battery by described the third wafer, and described parameter includes electricity and electricity
Pressure, compares voltage and first voltage threshold of described battery, and described first voltage threshold is the charging limit of described battery
Voltage processed；
If the voltage of described battery is less than described first voltage threshold, then with default electric current, described battery is carried out constant current and fill
Electricity；
If the voltage of described battery is more than or equal to described first voltage threshold, then with described first voltage threshold for charging voltage pair
Described battery carries out constant-voltage charge, and is compared with at full charge by the electricity of described battery；
If the electricity of described battery is more than or equal to described at full charge, controls described second switch element and disconnect stopping charging.
Circuit the most according to claim 7, it is characterised in that
Described control chip is further used for after the described second switch element of control disconnects to stop charging, by described battery
Voltage and the second voltage threshold compare, if the voltage of described battery less than described second voltage threshold, then controls described the
Two switching elements conductive are to be again charged described battery, and wherein said second voltage threshold is less than described first voltage threshold
Value；
Or electricity and first power threshold of described battery are compared, if the electricity of described battery is less than described first electricity
Threshold value, then control described second switch element conductive to be again charged described battery, wherein said first power threshold
At full charge less than described.
Circuit the most according to claim 7, it is characterised in that
Described control chip is further used for being sent to use by the parameter of described battery the display of the electronic equipment of described battery
Screen or other electronic equipments.
10. a charge management circuit, it is characterised in that including:
Control chip and second switch element, the input of described control chip connects according to any one of claim 4-6
The third wafer of battery, the outfan of described control chip connects the control end of described second switch element, described second switch
First connection end of element connects power supply, and the second connection end of described second switch element connects described battery.
11. 1 kinds of electronic equipments, it is characterised in that including:
The battery being sequentially connected with and charge management circuit, described battery is the battery according to any one of claim 1-3, described
Charge management circuit is the charge management circuit according to any one of claim 7-9.
12. 1 kinds of electronic equipments, it is characterised in that including:
The battery being sequentially connected with and charge management circuit, described battery is the battery according to any one of claim 4-6, described
Charge management circuit is the charge management circuit described in claim 10.
13. 1 kinds of chargers, it is characterised in that including:
Charge management circuit according to any one of change-over circuit and claim 7-10, the outfan of described change-over circuit connects
First connection end of second switch element in described charge management circuit, described change-over circuit is for being converted to external power supply directly
Stream power supply.
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| CN201610379212.4A CN106058961B (en) | 2016-05-31 | 2016-05-31 | A kind of rechargeable battery, charge management circuit, electronic equipment and charger |
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| CN201610379212.4A CN106058961B (en) | 2016-05-31 | 2016-05-31 | A kind of rechargeable battery, charge management circuit, electronic equipment and charger |
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| CN113193607A (en) * | 2020-01-14 | 2021-07-30 | 北京小米移动软件有限公司 | Battery charging method and device, electronic equipment and storage medium |
| CN113922459A (en) * | 2021-10-22 | 2022-01-11 | 北京小米移动软件有限公司 | Charging protection method and device, electronic equipment and storage medium |
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| CN106058961B (en) | 2019-05-07 |
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Denomination of invention: Rechargeable battery, charging management circuit, electronic device and charger Effective date of registration: 20200313 Granted publication date: 20190507 Pledgee: Shenzhen hi tech investment small loan Co., Ltd Pledgor: HYTERA COMMUNICATIONS CORPORATION Ltd. Registration number: Y2020980000700 |
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