CN106899066A - Battery protection balanced device and battery voltage balanced method - Google Patents
Battery protection balanced device and battery voltage balanced method Download PDFInfo
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- CN106899066A CN106899066A CN201710246391.9A CN201710246391A CN106899066A CN 106899066 A CN106899066 A CN 106899066A CN 201710246391 A CN201710246391 A CN 201710246391A CN 106899066 A CN106899066 A CN 106899066A
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the present invention proposes a kind of battery protection balanced device and battery voltage balanced method, and battery protection balanced device includes：Current detection circuit, voltage detecting circuit, multiple equalizing circuits and single-chip microcomputer, current detection circuit, voltage detecting circuit with monolithic mechatronics, single-chip microcomputer is electrically connected with multiple equalizing circuits, equalizing circuit is connected between the adjacent battery of each two, the current signal of current detection circuit collection operational amplifier output, voltage detecting circuit gathers the voltage signal of battery and battery pack, single-chip microcomputer is when voltage is unbalanced, output drive signal to equalizing circuit, equalizing circuit controls the voltage of battery according to drive signal；When the non-discharge and recharge of battery, the voltage signal of the current signal, the voltage signal of battery and battery pack of the output of single-chip microcomputer timing scan operational amplifier.The present invention is driven by metal-oxide-semiconductor, and completion is at different levels to drive not problem altogether, and equalizing circuit realizes the electric charge transfer between battery, reaches battery voltage balanced.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of battery protection balanced device and battery voltage balanced
Method.
Background technology
While new energy technology makes rapid progress development, battery management technique is particularly important.Various electric equipments
Power supply is all be unable to do without, as long as electrical equipment, or with alternating current, or with battery, present electric equipment battery is increasingly
Tend to main flow, even the electrical equipment of family expenses also increasingly tends to being powered with battery, such as various household portable electrical equipment.And it is moveable
Electric equipment must just be powered using battery.No matter which type of battery can all there is the problem that battery combination is used using.
It is almost indispensable in each Common People such as motor bicycle, its battery often after using three or five months just very much not
It is such as preceding.Search to the bottom reason, be exactly that battery unbalanced situation occurs, the characteristic of battery can not possibly each index complete
Cause, using long, its inequality extent is gradually increased, finally show the decline of whole group battery performance, or even cannot use.More
Seriously, because in battery pack certain battery increasingly can't bear the heavy load and performance drastically under it is grand, cause in charge or discharge
The major accident such as burning or blast, causes big economic loss or injury accident.
Thus prior art can not increasingly meet new application.External battery is good again also to be occurred not in use
Equilibrium, and cost into several times increase.As long as it may be said that any battery is applied in combination and just necessarily has equalization problem.
The content of the invention
It is an object of the invention to provide a kind of battery protection balanced device and battery voltage balanced method, battery electricity is solved
The technical problem of unbalanced, battery pack the hydraulic performance decline of pressure.
To achieve these goals, the technical scheme that the embodiment of the present invention is used is as follows：
In a first aspect, a kind of battery protection balanced device is the embodiment of the invention provides, for preventing battery pack super-charge super-discharge,
The battery pack includes multiple batteries, and the battery protection balanced device includes：Current detection circuit, voltage detecting circuit, multiple
Equalizing circuit and single-chip microcomputer, the current detection circuit, voltage detecting circuit are electrically connected with the multiple battery, the electricity
Current detection circuit, voltage detecting circuit with the monolithic mechatronics, the single-chip microcomputer is electrically connected with the multiple equalizing circuit
Connect, the equalizing circuit is connected between the adjacent battery of each two, the current detection circuit includes operational amplifier；
The current detection circuit gathers the current signal of the operational amplifier output；The voltage detecting circuit gathers the battery
And the voltage signal of the battery pack；The single-chip microcomputer is operationally opened the operational amplifier and is powered, in the battery
When voltage signal size belongs to first threshold, the voltage signal of the battery and the ratio of the voltage signal of the battery pack are calculated
Value, when the ratio belongs to three threshold values beyond the current signal size that Second Threshold and the operational amplifier are exported, output
Drive signal is to the equalizing circuit；When the current signal that the ratio is exported beyond Second Threshold and the operational amplifier
Size exceed three threshold values when, described in timing scan operational amplifier output current signal, the battery voltage signal with
And the voltage signal of the battery pack；The equalizing circuit controls the voltage of the battery according to the drive signal.
Second aspect, the embodiment of the present invention additionally provides a kind of battery voltage balanced method, the battery voltage balanced side
Method includes：The single-chip microcomputer is operationally opened the operational amplifier and is powered；The current detection circuit gathers the computing
The current signal of amplifier output；The voltage detecting circuit gathers the voltage signal of the battery and the battery pack；It is described
Single-chip microcomputer calculates the voltage signal and the battery of the battery when the voltage signal size of the battery belongs to first threshold
The ratio of the voltage signal of group, when the current signal size category that the ratio is exported beyond Second Threshold and the operational amplifier
When three threshold values, the single-chip microcomputer output drive signal to the equalizing circuit；The equalizing circuit is believed according to described driving
The voltage of number control battery；When the ratio is big beyond the current signal that Second Threshold and the operational amplifier are exported
It is small when exceeding three threshold values, current signal, the electricity of the battery of operational amplifier output described in the single-chip microcomputer timing scan
The voltage signal of pressure signal and the battery pack.
The embodiment of the present invention provides a kind of battery protection balanced device and battery voltage balanced method, is exported using single-chip microcomputer and driven
Move signal and realize many drive signals outputs of band Dead Time using single-chip microcomputer timer, by metal-oxide-semiconductor driving, complete drives at different levels
Dynamic not problem altogether, to voltage detecting and compares to reduce the process time of processor, to charging and discharging detection simplifying circuit
Further reduces cost, realizes the electric charge transfer between each battery of battery pack, finally realizes battery voltage balanced.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows the schematic diagram that battery protection balanced device provided in an embodiment of the present invention is connected with battery pack.
Fig. 2 shows the circuit diagram of current detection circuit provided in an embodiment of the present invention.
Fig. 3 shows the circuit diagram of voltage detecting circuit provided in an embodiment of the present invention.
Fig. 4 shows the circuit diagram of single-chip microcomputer provided in an embodiment of the present invention.
Fig. 5 shows the circuit diagram of equalizing circuit provided in an embodiment of the present invention.
Fig. 6 shows the battery voltage balanced method of the embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of selected embodiment of the invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.Meanwhile, of the invention
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
First embodiment
Fig. 1 is referred to, shows what battery protection balanced device 100 provided in an embodiment of the present invention was connected with battery pack 200
Schematic diagram.Battery protection balanced device 100 is used to prevent the super-charge super-discharge of battery pack 200, and battery pack 200 includes multiple batteries, this reality
Apply in example, the quantity of battery is 6 (BT1~BT6), and in other embodiments, the quantity of battery is not limited, and can be more or less than
6.Battery protection balanced device 100 of the invention includes：Current detection circuit 110, voltage detecting circuit 120, single-chip microcomputer 130 with
And multiple equalizing circuits 140, current detection circuit 110, voltage detecting circuit 120 electrically connect with multiple battery BT1~BT6,
Current detection circuit 110, voltage detecting circuit 120 are electrically connected with single-chip microcomputer 130, single-chip microcomputer 130 and multiple equalizing circuits 140
Electrical connection, connects an equalizing circuit 140 between the adjacent battery of each two.
Fig. 2 is referred to, the circuit diagram of current detection circuit provided in an embodiment of the present invention 110 is shown.Current detecting electricity
Road 110 includes the first operational amplifier U3A, the second operational amplifier U3B, the first power switch Q5, the second power switch Q6, the
One feedback resistance R39, the second feedback resistance R32, the first input resistance R40, the second input resistance R35, the 3rd input resistance R36
And multiple sampling resistor R13, R41, R42, R43.First operational amplifier U3A, the second operational amplifier U3B output end it is equal
Electrically connected with single-chip microcomputer 130, the negative power end electricity of the negative power end of the first operational amplifier U3A and the second operational amplifier U3B
Connection, the negative power end of the first operational amplifier U3A is electrically connected with the first power switch Q5, the second power switch Q6 successively, the
One feedback resistance R39 is electrically connected between the inverting input of the first operational amplifier U3A and output end, the second feedback resistance
R32 is electrically connected between the inverting input of the second operational amplifier U3B and output end, and one end of the first input resistance R40 connects
It is connected between the inverting input of the first feedback resistance R39 and the first operational amplifier U3A, other end ground connection, the second input electricity
Resistance R35, one end of the 3rd input resistance R36 connect the inverting input and in-phase input end of the second operational amplifier U3B respectively,
The other end is grounded.One end after multiple sampling resistor R13, R41, R42, R43 parallel connection is connected with the negative pole of battery BT1, another
End ground connection, the positive pole of battery BT1 is electrically connected between the first power switch Q5 and the second power switch Q6.It should be noted that
By taking battery BT1 as an example, battery BT1 can think battery to battery shown in Fig. 2 as the supplying cell of battery protection balanced device 100
Protection balanced device 100 is powered.In other embodiments, it is also possible to as a example by any battery in battery pack 200, current detecting
The circuit that circuit 110 can be constituted with any battery in battery pack 200, with detect the first operational amplifier U3A in the circuit,
The current signal of the output end output of the second operational amplifier U3B.
Fig. 3 is referred to, the circuit diagram of voltage detecting circuit provided in an embodiment of the present invention 120 is shown.Voltage detecting electricity
Road 120 includes the first divider resistance R5, the second divider resistance R3, the 3rd divider resistance R4, the 4th divider resistance R1, battery BT1
After being connected with the first divider resistance R5, the second divider resistance R3 successively be grounded, battery pack successively with the 3rd divider resistance R4, the 4th
It is grounded after divider resistance R1 series connection, the input pin VBAT_DET of single-chip microcomputer 130 is connected to the first divider resistance R5, the second partial pressure
Between resistance R3, input pin VBAT6_DET is connected between the 3rd divider resistance R4, the 4th divider resistance R1.Need explanation
, the battery shown in Fig. 3 by taking battery BT1 as an example, believe by the voltage of the voltage signal and whole battery pack of measuring battery BT1
Number, it is easy to calculate the ratio of the voltage signal of the voltage signal and whole battery pack of battery BT1.In other embodiments, also may be used
By taking any battery in battery pack 200 as an example, voltage detecting circuit 120 can detect the electricity of any battery in battery pack 200
Pressure signal, to calculate the ratio of the voltage signal of the battery and the voltage signal of whole battery pack.According to the ratio, it may be determined that
Whether need startup equalizing circuit carries out electric voltage equalization to battery pack 200.The embodiment of the present invention is by voltage detecting and comparing
To reduce the process time of processor.
Fig. 4 is referred to, the circuit diagram of single-chip microcomputer provided in an embodiment of the present invention 130 is shown.Single-chip microcomputer 130 includes pin
VBAT_DET、VBAT6_DET、CHG_DET_OUT、DISCHG_DET_OUT、CRSS_SWH、CRSS_SWL.Pin VBAT_DET,
VBAT6_DET is used for the voltage of the read voltage detection collection of circuit 120, and pin CHG_DET_OUT, DISCHG_DET_OUT are used for
The electric current of the output of current detection circuit 110 is read, pin CRSS_SWH, CRSS_SWL are used for output drive signal to equalizing circuit
140。
Fig. 5 is referred to, the circuit diagram of equalizing circuit provided in an embodiment of the present invention 140 is shown.Equalizing circuit 140 includes
PMOS, NMOS tube, the first triode Q7, the second triode Q11, the 3rd triode Q15, first resistor R2, second resistance
R21,3rd resistor R15, the 4th resistance R17, the grid of PMOS are electrically connected between first resistor R2 and second resistance R21,
The source electrode of PMOS is electrically connected with the battery BT4 in battery pack, and the drain electrode of PMOS is electrically connected with the drain electrode of NMOS tube, NMOS tube
Grid electrically connected with the colelctor electrode of the 3rd triode Q15, resistance R10 is electrically connected between the source electrode and grid of NMOS tube,
The colelctor electrode of one triode Q7 is electrically connected with one end of second resistance R21, the grounded emitter of the first triode Q7, the one or three pole
The base stage of pipe Q7 is grounded by the first pull down resistor R69, the battery BT4 in the emitter stage and battery pack 200 of the 3rd triode Q15
Electrical connection, the base stage of the 3rd triode Q15 is electrically connected between 3rd resistor R15 and the 4th resistance R17, the second triode Q11
Colelctor electrode electrically connected with one end of 3rd resistor R15, the grounded emitter of the second triode Q11, the base of the second triode Q11
Pole is grounded by the second pull down resistor R68.The embodiment of the present invention is driven by metal-oxide-semiconductor, and completion is at different levels to drive not problem altogether.
The operation principle of the embodiment of the present invention is as follows：By taking battery BT1 as an example, single-chip microcomputer 130 operationally opens the first fortune
Amplifier U3A, the second operational amplifier U3B is calculated to power, with detected whether electric current flow through sampling resistor R13, R41, R42,
R43.When the first operational amplifier U3A, the second operational amplifier U3B power a period of time, single-chip microcomputer 130 can go to read the first computing
The size of amplifier U3A, the 1st, the 7 pin output current signals of the second operational amplifier U3B.Electricity of the single-chip microcomputer 130 in battery BT1
Pressure signal magnitude belongs to first threshold (first threshold can be the scope between the charging upper limit and charging lower limit of battery BT1)
When, the voltage signal of battery BT1 and the ratio of the voltage signal of whole battery pack 200 are calculated, when the ratio exceeds Second Threshold
When (Second Threshold can be the conversion boundary line of battery BT1), if the first operational amplifier U3A, the second operational amplifier U3B are defeated
Beyond the 3rd threshold value, (the 3rd threshold value can be the current value of the normal discharge and recharges of battery BT1, the present embodiment to the current signal size for going out
In for 20mA or so) be considered as no electric current and flow through sampling resistor R13, R41, R42, R43, i.e., no charge or discharge, then
The first power switch Q5 will be closed for a period of time, treat that next cycle is opened again.Conversely, when the first operational amplifier U3A, second
When the current signal size of operational amplifier U3B outputs belongs to three threshold values, the first power switch Q5 is remained into opening,
Current vanishes on sampling resistor R13, R41, R42, R43.Do so both can power saving, circuit state can be at any time detected again.
When find battery electric quantity inequality just can carry out battery immediately between equalization operation.When the first operational amplifier U3A, the second computing
The current signal size of amplifier U3B outputs is when belonging to three threshold values, the output drive signal of single-chip microcomputer 130 to equalizing circuit 140,
Equalizing circuit 140 controls the voltage of battery BT1 according to drive signal.When ratio exceeds Second Threshold, and the first operational amplifier
When the current signal size of U3A, the second operational amplifier U3B output exceeds three threshold values, the timing scan of single-chip microcomputer 130 first is transported
Calculate current signal, the voltage signal of battery BT1 and the battery pack 200 of amplifier U3A and the second operational amplifier U3B outputs
Voltage signal.When the voltage in determining battery pack according to voltage, current signal is unbalanced, then carry out above-mentioned electric voltage equalization move
Make.
Second embodiment
Fig. 6 is referred to, battery voltage balanced of the present invention using the battery protection balanced device 100 in embodiment one is shown
Method, the method includes：
Step S1, single-chip microcomputer 130 is operationally opened the first operational amplifier U3A, the second operational amplifier U3B and is powered.
Step S2, current detection circuit 110 gathers the electricity of the first operational amplifier U3A, the second operational amplifier U3B output
Stream signal.
The voltage signal of step S3, the collection battery of voltage detecting circuit 120 BT1~BT6 and battery pack 200.
In embodiments of the present invention, Fig. 3 is referred to, by taking battery BT1 as an example, battery BT1 can be supplied as to whole circuit
The supplying cell of electricity, the voltage of the difference sampling battery of voltage detecting circuit 120 BT1 and the voltage of battery pack 200.It is computed,
Battery BT1 takes 1/4 voltage, and it is relatively good mode that the whole group of battery pack 200 is powered and takes 1/31.The sampled value of VBAT_DET is in 0-
Between 1023, voltage is converted between 0-13.2V.The detection of VBAT6 is its analog-digital converter (ADC, Analog-to-
Digital Converter) 31 times of readout, it is computed, it is 100 that just the value of ADC represents 0.1V, i.e. ADC values per portion
It is exactly 10V, 1000 is exactly 100V, in order to the calculating treatment of software in single-chip microcomputer 130.Equalizing circuit 140 is final after operation
Up to electric voltage equalization, the voltage of single battery is exactly in fact total voltage divided by battery number.Read in 130 software processing of single-chip microcomputer
The value of ADC is compared, and takes its ratio and just knows whether its voltage is balanced.
Step S4, single-chip microcomputer 130 calculates battery when the voltage signal size of battery BT1~BT6 belongs to first threshold
The ratio of the voltage signal of BT1~BT6 and the voltage signal of battery pack 200.First threshold can be any electricity in battery pack
Scope between the charging upper limit and charging lower limit of pond BT1~BT6.
Step S5, when the ratio exceeds Second Threshold, and the first operational amplifier U3A, the second operational amplifier U3B are exported
Current signal size when belonging to three threshold values, the output drive signal of single-chip microcomputer 130 to equalizing circuit 140.
Step S6, equalizing circuit 140 controls the voltage of battery BT1~BT6 according to drive signal；The foundation of equalizing circuit 140
The voltage of drive signal control battery BT1~BT6 includes：Drive signal drives the first triode Q7 and the second triode Q11 to lead
Logical or cut-off.
Step S7, when ratio exceeds Second Threshold, and the electric current of the first operational amplifier, the second operational amplifier output is believed
When number size exceeds three threshold values, the first operational amplifier of timing scan of single-chip microcomputer 130, the electric current of the second operational amplifier output
The voltage signal of signal, the voltage signal of battery BT1~BT6 and battery pack 200.
In embodiments of the present invention, single-chip microcomputer 130 has used software timer.Existing timing function, such as millisecond in program
Timing ms_count, second timing second, can simultaneously realize the state upset of default two signals again, lead between two signals
Cleverly state change design is crossed, makes each to export a Dead Time, this Dead Time is more cleverly to enter to interrupt
Produced with exiting interruption directly to enter different flows, single program code is difficult to understand for this Dead Time, and it is implication function,
Respective pulse width can also be adjusted simultaneously, just can be realized by the value for changing timing.Here hardware PWM is not used
Modulation function, but realized by software timing.And the hardware PWM output of chip is adjusted as more fine Current Voltage
Whole use.
The software timer can also drive LED state to indicate, and corresponding variate-value only need to be changed in main program can realize
The change demand of various states, and do not increase cumbersome code and waste more sequential.In the output of drive signal also
Starting of the switching variable as drive signal is increased, makes program application more flexible.
SCM program of the invention can realize that the power managed and voltage ratio of various states determine whether to start
Weighing apparatus circuit work.Wherein dexterously set register to record sleep number of times using P2 mouthfuls of pattern, because single-chip microcomputer depth is slept
Its RAM is powered off after dormancy, and all variables will all lose due value in sleep, only special function register (SFR,
Special function register) its value before sleeping can be kept, the single-chip microcomputer selected in this circuit does not have P2 mouthfuls,
But there is P2 mouthfuls of mode register, so it is very cleverly that sleep state is recorded with the two registers.So as to avoid for
Record the state before sleep and go this ways do not calculated very much of erasable chip ROM repeatedly.
A kind of battery protection balanced device and battery voltage balanced method that the present invention is provided, are believed using single-chip microcomputer output driving
Number and realize many drive signals outputs of band Dead Time using single-chip microcomputer timer, driven by metal-oxide-semiconductor, complete drivings at different levels not
Problem altogether, to voltage detecting and compares to reduce the process time of processor, and one is entered to simplify circuit to charging and discharging detection
Step reduces cost, realizes the electric charge transfer between each battery of battery pack, finally realizes battery voltage balanced.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, then it is not required in subsequent accompanying drawing
It is further defined and is explained.
Claims (9)
1. a kind of battery protection balanced device, for preventing battery pack super-charge super-discharge, the battery pack includes multiple batteries, its feature
It is that the battery protection balanced device includes：
Current detection circuit, voltage detecting circuit, multiple equalizing circuits and single-chip microcomputer, the current detection circuit, voltage inspection
Slowdown monitoring circuit is electrically connected with the multiple battery, and the current detection circuit, voltage detecting circuit are electrically connected with the single-chip microcomputer
Connect, the single-chip microcomputer is electrically connected with the multiple equalizing circuit, the equilibrium is connected between the adjacent battery of each two
Circuit, the current detection circuit includes operational amplifier；
The current detection circuit gathers the current signal of the operational amplifier output；The voltage detecting circuit collection is described
The voltage signal of battery and the battery pack；The single-chip microcomputer is operationally opened the operational amplifier and is powered, in the electricity
When the voltage signal size in pond belongs to first threshold, the voltage signal and the voltage signal of the battery pack of the battery are calculated
Ratio, it is defeated when the ratio belongs to three threshold values beyond the current signal size that Second Threshold and the operational amplifier are exported
Go out drive signal to the equalizing circuit；When the electric current letter that the ratio is exported beyond Second Threshold and the operational amplifier
When number size exceeds three threshold values, current signal, the voltage signal of the battery of operational amplifier output described in timing scan
And the voltage signal of the battery pack；The equalizing circuit controls the voltage of the battery according to the drive signal.
2. battery protection balanced device as claimed in claim 1, it is characterised in that the operational amplifier is put including the first computing
Big device, the second operational amplifier, the current detection circuit also include the first power switch, the second power switch, the first feedback
Resistance, the second feedback resistance, the first input resistance, the second input resistance, the 3rd input resistance, first operational amplifier,
The output end of the second operational amplifier with the monolithic mechatronics, the negative power end and second of first operational amplifier
The negative power end electrical connection of operational amplifier, the negative power end of first operational amplifier is opened with the described first power supply successively
Close, the second power switch electrical connection, first feedback resistance be electrically connected to the inverting input of the first operational amplifier with it is defeated
Go out between end, the second feedback resistance is electrically connected between the inverting input of the second operational amplifier and output end, the first input
One end of resistance is connected between the inverting input of the first feedback resistance and the first operational amplifier, other end ground connection, second
Input resistance, one end of the 3rd input resistance connect the inverting input and in-phase input end of the second operational amplifier respectively, separately
One end is grounded.
3. battery protection balanced device as claimed in claim 2, it is characterised in that the current detection circuit is also adopted including multiple
Sample resistance, the one end after the plurality of sampling resistor parallel connection is connected with the negative pole of the supplying cell, other end ground connection, the confession
The positive pole of battery is electrically connected between the first power switch and the second power switch.
4. battery protection balanced device as claimed in claim 2, it is characterised in that when the electric current letter of operational amplifier output
When number size belongs to three threshold values, the first power switch described in the Single-chip Controlling keeps it turned on；When the computing is put
When the current signal size of big device output is less than three threshold values, the first power switch described in the Single-chip Controlling is closed.
5. battery protection balanced device as claimed in claim 1, it is characterised in that the voltage detecting circuit includes the first partial pressure
Resistance, the second divider resistance, the 3rd divider resistance, the 4th divider resistance, the supplying cell successively with the first divider resistance,
It is grounded after the series connection of two divider resistances, the battery pack is grounded after being connected with the 3rd divider resistance, the 4th divider resistance successively, described
Two input pins of single-chip microcomputer are connected between the first divider resistance and the second divider resistance, the 3rd divider resistance and
Between four divider resistances.
6. battery protection balanced device as claimed in claim 1, it is characterised in that the equalizing circuit includes PMOS, NMOS
Pipe, the first triode, the second triode, the 3rd triode, first resistor, second resistance, 3rd resistor, the 4th resistance, it is described
The grid of PMOS is electrically connected between first resistor and second resistance, the electricity in the source electrode of the PMOS and the battery pack
Pond electrically connects, and the drain electrode of the PMOS electrically connects with the drain electrode of the NMOS tube, the grid of the NMOS tube and the three or three pole
The colelctor electrode electrical connection of pipe, is electrically connected with resistance between the source electrode and grid of the NMOS tube, the colelctor electrode of the first triode with
One end electrical connection of second resistance, the grounded emitter of the first triode, the base stage of the first triode passes through the first pull down resistor
Ground connection, the emitter stage of the 3rd triode electrically connects with the battery in the battery pack, and the base stage of the 3rd triode is electrically connected to the
Between three resistance and the 4th resistance, the colelctor electrode of the second triode is electrically connected with one end of 3rd resistor, the hair of the second triode
Emitter grounding, the base stage of the second triode is grounded by the second pull down resistor.
7. battery protection balanced device as claimed in claim 1, it is characterised in that the multiple battery includes supplying cell, uses
Powered in for the battery protection balanced device.
8. a kind of usage right requires the battery voltage balanced method of the battery protection balanced device described in any one of 1-7, its feature
It is that the battery voltage balanced method includes：
The single-chip microcomputer is operationally opened the operational amplifier and is powered；
The current detection circuit gathers the current signal of the operational amplifier output；
The voltage detecting circuit gathers the voltage signal of the battery and the battery pack；
The single-chip microcomputer when the voltage signal size of the battery belongs to first threshold, calculate the voltage signal of the battery with
The ratio of the voltage signal of the battery pack, when the electric current letter that the ratio is exported beyond Second Threshold and the operational amplifier
When number size belongs to three threshold values, the single-chip microcomputer output drive signal to the equalizing circuit；
The equalizing circuit controls the voltage of the battery according to the drive signal；
When the ratio exceeds three threshold values beyond the current signal size that Second Threshold and the operational amplifier are exported,
The current signal of operational amplifier output, the voltage signal of the battery and the battery described in the single-chip microcomputer timing scan
The voltage signal of group.
9. battery voltage balanced method as claimed in claim 8, it is characterised in that the equalizing circuit is believed according to described driving
The voltage of number control battery includes：The drive signal drives the first triode and the second triode ON or cut-off.
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| CN201710246391.9A CN106899066A (en) | 2017-04-15 | 2017-04-15 | Battery protection balanced device and battery voltage balanced method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710246391.9A CN106899066A (en) | 2017-04-15 | 2017-04-15 | Battery protection balanced device and battery voltage balanced method |
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| CN106899066A true CN106899066A (en) | 2017-06-27 |
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| CN201710246391.9A Pending CN106899066A (en) | 2017-04-15 | 2017-04-15 | Battery protection balanced device and battery voltage balanced method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819395A (en) * | 2006-03-15 | 2006-08-16 | 李慧琪 | Evenly charging method and charger for serial batteries |
| CN101902060A (en) * | 2010-07-23 | 2010-12-01 | 重庆大学 | Charge-discharge battery pack equilibrium management system |
| US20140232347A1 (en) * | 2013-02-19 | 2014-08-21 | Freescale Semiconductor, Inc. | Circuit and method for battery equalization |
| CN104779665A (en) * | 2015-03-12 | 2015-07-15 | 浙江大学 | Mobile power supply capable of equalizing charge |
| CN105553026A (en) * | 2016-01-29 | 2016-05-04 | 华南理工大学 | Battery pack electricity equalization circuit and equalization method |
-
2017
- 2017-04-15 CN CN201710246391.9A patent/CN106899066A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1819395A (en) * | 2006-03-15 | 2006-08-16 | 李慧琪 | Evenly charging method and charger for serial batteries |
| CN101902060A (en) * | 2010-07-23 | 2010-12-01 | 重庆大学 | Charge-discharge battery pack equilibrium management system |
| US20140232347A1 (en) * | 2013-02-19 | 2014-08-21 | Freescale Semiconductor, Inc. | Circuit and method for battery equalization |
| CN104779665A (en) * | 2015-03-12 | 2015-07-15 | 浙江大学 | Mobile power supply capable of equalizing charge |
| CN105553026A (en) * | 2016-01-29 | 2016-05-04 | 华南理工大学 | Battery pack electricity equalization circuit and equalization method |
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