CN110071549A - A kind of battery voltage balanced system and battery charging and discharging system - Google Patents
A kind of battery voltage balanced system and battery charging and discharging system Download PDFInfo
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- CN110071549A CN110071549A CN201910429777.2A CN201910429777A CN110071549A CN 110071549 A CN110071549 A CN 110071549A CN 201910429777 A CN201910429777 A CN 201910429777A CN 110071549 A CN110071549 A CN 110071549A
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- 238000007599 discharging Methods 0.000 title claims abstract description 25
- 239000000178 monomer Substances 0.000 claims abstract description 74
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 13
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—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
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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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H02J7/0026—
-
- H02J7/0077—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
This application discloses a kind of battery voltage balanced system and battery charging and discharging systems, applied to battery charging and discharging system, including voltage detection module, first constant-current source in parallel with section single battery one-to-one correspondence every in battery pack, control module and charger for charging for each single battery, wherein: voltage detection module, for detecting the voltage of every section single battery；Control module, for judging whether there is subject monomers battery according to the voltage and preset rules of all single batteries, if so, the charging current of charger is adjusted to predetermined current, and control first constant-current source in parallel with subject monomers battery and open, so that the bypass charging current of charger is fallen.The charging current of charger can all be bypassed after first constant-current source in parallel with subject monomers battery is opened in the application, to guarantee that charger will not again charge to subject monomers battery, and then realize electric voltage equalization between each section single battery.
Description
Technical field
This application involves battery charging and discharging fields, more particularly to a kind of battery voltage balanced system and battery charging and discharging system
System.
Background technique
In use by more piece single battery battery pack in series, it is possible that monomer battery voltage height
Uneven situation can cause to overcharge, shorten single battery when electrically operated to battery pack progress charge and discharge to certain single batteries
Service life, to influence the service life and service efficiency of battery pack.It is asked for above-mentioned monomer battery voltage is unbalanced
Topic, the scheme of the prior art are in a single battery both ends constant-current source in parallel, when the voltage of a certain single battery is higher than other
When voltage, constant-current source connected in parallel is opened, part charging current is allowed directly to switch to next section without the single battery
Single battery.But in practical applications, the charging current of battery is from several amperes to tens of amperes etc., and constant-current source very little
(usually less than 100mA), therefore, only part charging current can be bypassed, and remaining charging current still passes through the list
Body battery, for single battery charging, therefore, the scheme of the prior art can not very good solution monomer battery voltage it is unbalanced
Problem.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Summary of the invention
The purpose of the application is to provide a kind of battery voltage balanced system and battery charging and discharging system, it is ensured that with target
First constant-current source of single battery parallel connection can all bypass charging current to next single battery after opening, and charger will not
It charges again to subject monomers battery, to realize electric voltage equalization between each section single battery.
In order to solve the above technical problems, being applied to battery charging and discharging this application provides a kind of battery voltage balanced system
System, including voltage detection module, first constant-current source in parallel with section single battery one-to-one correspondence every in battery pack, control module
And the charger for charging for single battery described in each section, in which:
The voltage detection module, for detecting the voltage of single battery described in every section；
The control module, for judging whether there is target according to the voltage and preset rules of all single batteries
Single battery if so, the charging current of the charger is adjusted to predetermined current, and controls and the subject monomers battery
First constant-current source in parallel is opened, to fall the bypass charging current of the charger；
Wherein, the predetermined current is less than or equal to the constant electricity of first constant-current source in parallel with the subject monomers battery
Stream.
Preferably, described to be sentenced according to the voltage and preset rules of all single batteries after the battery pack is dispatched from the factory
The disconnected process with the presence or absence of subject monomers battery includes:
The single battery that the voltage is greater than full charge voltage is judged whether there is, if so, determining that there are subject monomers electricity
Pond, and the subject monomers battery is the single battery that the voltage is greater than the full charge voltage；
It is described to judge whether to deposit according to the voltage and preset rules of all single batteries before battery pack factory
Include: in the process of subject monomers battery
Judge with the presence or absence of maximum voltage in the voltage of all single batteries, if so, determining that there are the targets
Single battery, and the subject monomers battery is the corresponding single battery of the maximum voltage.
Preferably, battery voltage balanced system further include: the second constant-current source and first switch tube, in which:
The input terminal of second constant-current source is connect with the first end of the first switch tube, common end and the battery
The cathode of charge-discharge system connects, and the output end of second constant-current source is connect with the second end of the first switch tube, public
End is connect with the charging cathode of the charger altogether, the control terminal of the control terminal of the first switch tube and second constant-current source
It is connect with the control module, wherein the constant current of second constant-current source is less than or equal to each first constant-current source
Constant current；
The control module, specifically for when there are the subject monomers battery, control second constant-current source is opened, controlled
The first switch tube shutdown is made, so that the charging current of the charger reaches the predetermined current, and is controlled and the mesh
The first constant-current source for marking single battery parallel connection is opened, to fall the bypass charging current of the charger.
Preferably, which further includes communication module；
The control module, specifically for when there are the subject monomers battery, generating communication instruction, and control with it is described
First constant-current source of subject monomers battery parallel connection is opened, to fall the bypass charging current of the charger；
The communication module, for the communication instruction to be sent to the charger, so that the charger is according to institute
It states communication instruction and its charging current is adjusted to the predetermined current.
Preferably, the battery voltage balanced system further include:
Overcurrent protection module, when the charging current is more than preset value, executes overcurrent for obtaining the charging current
Protection operation.
Preferably, the overcurrent protection module includes: first resistor, second switch, OCD, in which:
The first end of the first resistor is connect with the cathode of the battery pack, the second end of the first resistor with it is described
The second end of second switch connects, and the first end of the second switch is connect with the cathode of the battery charging and discharging system,
The control terminal of the second switch is connect with the control module；
The OCD, for detecting the electric current Jing Guo the first resistor, when the electric current is greater than preset value, generation triggering
Instruction；
The control module is also used to after receiving the triggering command, controls the second switch shutdown.
Preferably, first constant-current source and second constant-current source include concatenated third switching tube and the second electricity
Resistance.
Preferably, first constant-current source and second constant-current source further include amplifier, the same phase of the amplifier
Input terminal is connect with reference power source, the public affairs of the inverting input terminal of the amplifier and the third switching tube and the second resistance
End connection, the output end of the amplifier are connect with the control terminal of the third switching tube altogether.
Preferably, the voltage detection module includes analog-digital converter ADC.
In order to solve the above technical problems, present invention also provides a kind of battery charging and discharging systems, including such as any one above
Battery voltage balanced system described in.
This application provides a kind of battery voltage balanced systems, are applied to battery charging and discharging system, including voltage detecting mould
Block, first constant-current source in parallel with section single battery one-to-one correspondence every in battery pack, control module and for for each monomer electricity
The charger of pond charging, in which: voltage detection module, for detecting the voltage of every section single battery；Control module is used for basis
The voltage and preset rules of all single batteries judge whether there is subject monomers battery, if so, by the charging electricity of charger
Stream is adjusted to predetermined current, and controls the first constant-current source opening in parallel with subject monomers battery, so as to by the charging of charger
Current bypass falls；Wherein, predetermined current is less than or equal to the constant current of first constant-current source in parallel with subject monomers battery.
In practical applications, using the scheme of the application, when there are subject monomers battery, by the charging current of charger
It is reduced to predetermined current, it is in parallel with subject monomers battery since predetermined current is lower than the constant current of each first constant-current source
First constant-current source can all bypass the charging current of charger to next single battery, to guarantee that charger will not after opening
It charges again to subject monomers battery, and then realizes electric voltage equalization between each section single battery.
Present invention also provides a kind of battery charging and discharging systems, have identical beneficial with above-mentioned battery voltage balanced system
Effect.
Detailed description of the invention
It in order to more clearly explain the technical solutions in the embodiments of the present application, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of battery voltage balanced system provided herein；
Fig. 2 is the structural schematic diagram of another battery voltage balanced system provided herein；
Fig. 3 is the structural schematic diagram of another battery voltage balanced system provided herein；
Fig. 4 is the structural schematic diagram of another battery voltage balanced system provided herein；
Fig. 5 is the structural schematic diagram of another battery voltage balanced system provided herein；
Fig. 6 is the structural schematic diagram of another battery voltage balanced system provided herein；
Fig. 7 a is a kind of structural schematic diagram of constant-current source provided herein；
Fig. 7 b is the structural schematic diagram of another constant-current source provided herein；
Fig. 7 c is the structural schematic diagram of another constant-current source provided herein.
Specific embodiment
The core of the application is to provide a kind of battery voltage balanced system and battery charging and discharging system, it is ensured that with target
First constant-current source of single battery parallel connection can all bypass charging current to next single battery after opening, and charger will not
It charges again to subject monomers battery, to realize electric voltage equalization between each section single battery.
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of battery voltage balanced system provided herein, is applied to
Battery charging and discharging system, including voltage detection module 1, first constant current in parallel with section single battery one-to-one correspondence every in battery pack
Source Ii, control module 2 and the charger 3 for charging for each section single battery, in which:
Voltage detection module 1, for detecting the voltage of every section single battery；
Specifically, including multiple concatenated single battery V in battery pack shown in referring to Fig.11-Vn, on every section single battery
It is parallel with a first constant-current source Ii(He Gejie single battery is corresponding, is denoted as I respectively1-In), the anode of battery pack is (i.e. single
Body battery V1Anode) connect respectively with the system anode of the charging anode P+ of charger 3 and battery charging and discharging system, battery pack
Cathode (i.e. single battery VnCathode) connect respectively the charger 3 charging cathode CHG-, battery charging and discharging system charging
Cathode and ground.
Specifically, voltage detection module 1 is used to detect the voltage of each section single battery, voltage detection module 1 can be real-time
The voltage of each section single battery is obtained, it can also interval acquiring, prefixed time interval can be according to each section monomers at preset timed intervals
The current voltage of battery is arranged, and the application is it is not limited here.
Voltage detection module 1 can be ADC (Analog-to-Digital Converter, analog-digital converter), will acquire
To voltage digital quantity is converted to by analog quantity, be compared convenient for control module 2.Certainly, in addition to ADC can be used as electricity
Detection module 1 is pressed, other detection components can also be used, the application is it is not limited here.
Control module 2 judges whether there is subject monomers electricity for the voltage and preset rules according to all single batteries
Pond, if so, the charging current of charger 3 is adjusted to predetermined current, and it is permanent to control first in parallel with subject monomers battery
Stream source is opened, to fall the bypass charging current of charger 3；
Wherein, predetermined current is less than or equal to the constant current of first constant-current source in parallel with subject monomers battery.
Embodiment as one preferred, charger 3 can be onstant current voltage limiting to charge device.
Specifically, in the actual application after battery pack factory, according to the voltage of all single batteries and default rule
Then judge whether there is the process of subject monomers battery specifically: judge whether there is monomer electricity of the voltage greater than full charge voltage
Pond, if so, determining that there are subject monomers batteries, and subject monomers battery is the single battery that voltage is greater than full charge voltage.
Specifically, control module 2 obtains voltage detection module 1 when charger 3 is charged using initial charge current as battery pack
The voltage for getting each single battery is compared with full charge voltage, judges whether there is the single battery for reaching full charge voltage,
If it exists, which is determined as subject monomers battery.Assuming that the subject monomers battery is single battery V1, control module
The charging current of charger 3 is adjusted to predetermined current by 2, and is opened and single battery V1First constant-current source I in parallel1, to lead to
Cross the first constant-current source I1By the bypass charging current of charger 3 to next single battery, (setting a single battery is single battery
V2), make 3 single battery V of charger2Charging, as single battery V2Voltage reach full charge voltage, single battery V2As
Subject monomers battery, the control of control module 2 and single battery V2First constant-current source I in parallel2It opens, so as to filling charger 3
Electric current passes through the first constant-current source I2To next single battery, (setting a single battery is single battery V for bypass3), when monomer electricity
Pond V3Voltage reach full charge voltage, single battery V3As subject monomers battery, control and single battery V3In parallel first
Constant-current source I3It opens, and so on, until the voltage of all single batteries reaches full charge voltage, it is to be understood that if mesh
Mark single battery is single battery Vn, then will be with single battery VnFirst constant-current source I in parallelnIt opens, by the charging of charger 3
Current bypass is extremely.Wherein, full charge voltage needs are arranged according to actual requirement of engineering, and the application is it is not limited here.
Further, in the application, it is contemplated that the constant current of constant-current source is smaller, therefore, reaches full when occurring first
When the single battery of charging voltage, control module 2 just adjusts the charging current of charger 3 to predetermined current, wherein predetermined current
It should be less than or be equal to the first constant-current source IiConstant current, then, charger 3 always with the predetermined current be each section single battery
Charging can be all other by the charging current of charger 3 after ensure that the first constant-current source in parallel with subject monomers battery is opened
Road is fallen, to guarantee after the voltage of a certain single battery reaches full charge voltage, charger 3 will not again be carried out the single battery
Charging, and then solve the problems, such as that cell voltage is unbalanced during the charging process.
Correspondingly, before battery pack factory, for the consistency for promoting battery pack, according to the voltage of all single batteries and pre-
If rule judges whether there is the process of subject monomers battery specifically: judge in the voltage of all single batteries with the presence or absence of most
Big voltage, if so, determining that there are subject monomers batteries, and subject monomers battery is the corresponding single battery of maximum voltage.
Specifically, detecting the voltage of each section single battery by voltage detection module 1, the voltage of each single battery is judged
It is whether not all identical, if so, being ranked up by the height of voltage value to single battery, wherein the monomer with maximum voltage value
Battery is subject monomers battery, and control module 2 adjusts the charging current of charger 3 to predetermined current, and opening and highest
First constant-current source of single battery parallel connection makes charger 3 no longer charge for the subject monomers battery, waits for a period of time, when secondary
When the voltage of the corresponding single battery of high-voltage value reaches above-mentioned ceiling voltage, the corresponding single battery of the secondary high-voltage value can also
Regard subject monomers battery as, control module 2 opens first constant-current source in parallel with the secondary high monomer battery, and so on, until
The voltage of all single batteries reaches ceiling voltage, to guarantee that each monomer battery voltage is balanced in battery pack.
This application provides a kind of battery voltage balanced systems, are applied to battery charging and discharging system, including voltage detecting mould
Block, first constant-current source in parallel with section single battery one-to-one correspondence every in battery pack, control module and for for each monomer electricity
The charger of pond charging, in which: voltage detection module, for detecting the voltage of every section single battery；Control module is used for basis
The voltage and preset rules of all single batteries judge whether there is subject monomers battery, if so, by the charging electricity of charger
Stream is adjusted to predetermined current, and controls the first constant-current source opening in parallel with subject monomers battery, so as to by the charging of charger
Current bypass falls；Wherein, predetermined current is less than or equal to the constant current of first constant-current source in parallel with subject monomers battery.
In practical applications, using the scheme of the application, when there are subject monomers battery, by the charging current of charger
It is reduced to predetermined current, it is in parallel with subject monomers battery since predetermined current is lower than the constant current of each first constant-current source
First constant-current source can all bypass the charging current of charger to next single battery, to guarantee that charger will not after opening
It charges again to subject monomers battery, and then realizes electric voltage equalization between each section single battery.
Referring to figure 2., Fig. 2 is the structural schematic diagram of another battery voltage balanced system provided herein, in Fig. 2
Switching tube indicate that first end of the drain electrode as switching tube of metal-oxide-semiconductor, the source electrode of metal-oxide-semiconductor is as switching tube in the form of metal-oxide-semiconductor
Second end, control terminal of the grid of metal-oxide-semiconductor as switching tube, the battery voltage balanced system is on the basis of above-described embodiment
It is upper:
Embodiment as one preferred, the battery voltage balanced system further include: the second constant-current source ImAnd first switch
Pipe Q1, in which:
The input terminal and first switch tube Q of second constant-current source Im1First end connection, common end and battery charging and discharging system
The cathode of system connects, the second constant-current source ImOutput end and first switch tube Q1Second end connection, common end and charger 3
Charging cathode connection, first switch tube Q1Control terminal and the second constant-current source ImControl terminal connect with control module 2, wherein
Second constant-current source ImConstant current be less than or equal to each first constant-current source IiConstant current；
Control module 2, specifically for when there are subject monomers battery, the second constant-current source I of controlmIt opens, control first is opened
Close pipe Q1Shutdown, so that the charging current of charger 3 reaches predetermined current, and it is permanent to control first in parallel with subject monomers battery
Stream source is opened, to fall the bypass charging current of charger 3.
Specifically, battery voltage balanced system provided herein further includes the second constant-current source Im, first switch tube Q1,
First switch tube Q1First end and the second constant-current source ImInput terminal connection, common end respectively with the cathode of battery pack and electricity
The cathode of pond charge-discharge system connects, the second constant-current source ImOutput end and first switch tube Q1Second end connection, common end
It is connect with the charging cathode of charger 3.It is understood that when being that battery pack charges by charger 3, first switch tube Q1It is silent
On state is thought, when control module 2 determines to control first switch tube Q there are when subject monomers battery1Shutdown, and control the
Two constant-current source ImIt opens, the second constant-current source ImConstant current be less than or equal to the first constant-current source IiConstant current, and the two is equal
Less than the initial charge current of charger 3, as the electric current I of the charging cathode CHG- of charger 3CHG-For the second constant-current source ImPerseverance
Constant current is (it can be appreciated that ICHG-Less than predetermined current) when, charger 3 is in pressure limiting state, the charging electricity of the charger 3
Stream drops to predetermined current by initial charge current, charges for each section single battery, meanwhile, the control of control module 2 and target list
First constant-current source of body battery parallel connection is opened, and bypass charging current is fallen, so that next single battery is charged to full charge voltage
Or ceiling voltage, guarantee battery voltage balanced in battery pack.
Referring to figure 3., Fig. 3 is the structural schematic diagram of another battery voltage balanced system provided herein, the electricity
The equal balance system of cell voltage is on the basis of the above embodiments:
Embodiment as one preferred, the battery voltage balanced system further include communication module 4；
Control module 2, specifically for when there are subject monomers battery, generation communication instruction, and controls and subject monomers electricity
First constant-current source of pond parallel connection is opened, to fall the bypass charging current of charger 3；
Communication module 4, for communication instruction to be sent to charger 3, so that charger 3 is charged according to communication instruction
Electric current is adjusted to predetermined current.
Embodiment as one preferred, communication module 4 are I2C communication module.
Specifically, one can also be arranged in battery voltage balanced system provided herein for realizing charger end
With the communication module 4 of the communication at battery pack end, which can specifically include the line for being used for transmission communication instruction
Cable, the cable allow battery pack end and charger end to do information transmitting by single-wire-protocol, I2C agreement or any proprietary protocol.
Specifically, when control module 2 determines to send and lead to charger 3 by communication module 4 there are when subject monomers battery
The charging current of its own is actively reduced to predetermined current after receiving the communication instruction by letter instruction, charger 3, for electricity
The charging of pond group, meanwhile, control module 2 controls first constant-current source in parallel with subject monomers battery and opens, by the charging of charger 3
Current bypass falls, so that next single battery is charged to full charge voltage or ceiling voltage, to guarantee cell voltage in battery pack
It is balanced.
Referring to figure 4. or Fig. 5, Fig. 4 or Fig. 5 be another battery voltage balanced system provided herein structure
Schematic diagram, the switching tube in Fig. 4 and Fig. 5 indicate in the form of metal-oxide-semiconductor, first end of the drain electrode of metal-oxide-semiconductor as switching tube,
Second end of the source electrode of metal-oxide-semiconductor as switching tube, control terminal of the grid of metal-oxide-semiconductor as switching tube, the battery voltage balanced system
It unites on the basis of the above embodiments:
Embodiment as one preferred, the battery voltage balanced system further include:
Overcurrent protection module, when charging current is more than preset value, executes overcurrent protection behaviour for obtaining charging current
Make.
Embodiment as one preferred, overcurrent protection module include: first resistor R1, second switch Q2, OCD 5,
In:
First resistor R1First end and battery pack cathode connect, first resistor R1Second end and second switch Q2
Second end connection, second switch Q2First end connect with the cathode of battery charging and discharging system, second switch Q2Control
End is connect with control module 2；
OCD 5 passes through first resistor R for detecting1Electric current, when electric current be greater than preset value, generate triggering command；
Control module 2, is also used to after receiving triggering command, controls second switch Q2Shutdown.
Specifically, during charging to battery pack, second switch Q2It is defaulted as on state, first resistor
R1For detecting charging current, to prevent overcurrent, specifically, passing through OCD 5 (Over Current Detect, over-current detection)
Detection flows through first resistor R1Electric current, when the electric current be greater than preset value when, by control module 2 control second switch Q2Shutdown,
Charger 3 enters pressure limiting state at this time, reduces charging current automatically, to achieve the purpose that overcurrent protection, improves the peace of the application
Quan Xing.
Further, referring to shown in Fig. 6, the switching tube in Fig. 6 is indicated in the form of metal-oxide-semiconductor, and the drain electrode of metal-oxide-semiconductor is as switch
The first end of pipe, second end of the source electrode of metal-oxide-semiconductor as switching tube, control terminal of the grid of metal-oxide-semiconductor as switching tube.For into one
Step reduces hardware cost, the communication plan of a upper embodiment can also be realized using the power carrier mode of P+ cable, specifically
, by controlling second switch Q2On or off so that P+ transmitting height variation signal to charger end, to fill
Electric appliance 3 is according to the high-low signal received come its own charging current of adjust automatically.
Embodiment as one preferred, the first constant-current source IiWith the second constant-current source ImIt include concatenated third switching tube
Q3With second resistance R2。
Embodiment as one preferred, the first constant-current source IiWith the second constant-current source ImIt further include amplifier A, amplifier A
Non-inverting input terminal connect with reference power source, the inverting input terminal of amplifier A and third switching tube Q3With second resistance R2It is public
End connection, the output end and third switching tube Q of amplifier A3Control terminal connection.
Specifically, the structure chart of constant-current source is referred to shown in Fig. 7 a, Fig. 7 b, including concatenated third switching tube Q3With
Two resistance R2, on this basis, referring to shown in Fig. 7 c, constant-current source can also include amplifier A.In Fig. 7 a, Fig. 7 b and Fig. 7 c
Switching tube indicates that first end of the drain electrode of metal-oxide-semiconductor as switching tube, the source electrode of metal-oxide-semiconductor is as switching tube in the form of metal-oxide-semiconductor
Second end, control terminal of the grid of metal-oxide-semiconductor as switching tube.
In order to further increase the integrated level of the application, the scheme of the application can be by being integrated with above-mentioned each function mould
The chip of block is to realize, and each switching tube can also use IGBT (Insulated Gate Bipolar in the application
Transistor, insulated gate bipolar transistor) etc. other switching tubes, be able to achieve the application required function, the application exists
This is without limitation.
Correspondingly, present invention also provides a kind of battery charging and discharging system, the cell voltage including any one such as above
Equal balance system.
Above-described embodiment is please referred to for a kind of introduction of battery charging and discharging system provided herein, the application is herein
It repeats no more.
A kind of battery charging and discharging system provided herein has identical beneficial with above-mentioned battery voltage balanced system
Effect.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, article or equipment including a series of elements are not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in process, article or the equipment of element that there is also other identical elements.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of battery voltage balanced system, which is characterized in that it is applied to battery charging and discharging system, including voltage detection module,
First constant-current source in parallel with section single battery one-to-one correspondence every in battery pack, control module and for for the electricity of monomer described in each section
The charger of pond charging, in which:
The voltage detection module, for detecting the voltage of single battery described in every section；
The control module, for judging whether there is subject monomers according to the voltage and preset rules of all single batteries
Battery if so, the charging current of the charger is adjusted to predetermined current, and controls in parallel with the subject monomers battery
The first constant-current source open, so that the bypass charging current of the charger is fallen；
Wherein, the predetermined current is less than or equal to the constant current of first constant-current source in parallel with the subject monomers battery.
2. battery voltage balanced system according to claim 1, which is characterized in that described after battery pack factory
Include: according to the process that the voltage of all single batteries and preset rules judge whether there is subject monomers battery
The single battery that the voltage is greater than full charge voltage is judged whether there is, if so, determine that there are subject monomers batteries, and
The subject monomers battery is the single battery that the voltage is greater than the full charge voltage；
It is described that mesh is judged whether there is according to the voltage and preset rules of all single batteries before battery pack factory
Mark single battery process include:
Judge with the presence or absence of maximum voltage in the voltage of all single batteries, if so, determining that there are the subject monomers
Battery, and the subject monomers battery is the corresponding single battery of the maximum voltage.
3. battery voltage balanced system according to claim 2, which is characterized in that the battery voltage balanced system is also wrapped
It includes: the second constant-current source and first switch tube, in which:
The input terminal of second constant-current source is connect with the first end of the first switch tube, common end and the battery charge and discharge
The cathode of electric system connects, and the output end of second constant-current source is connect with the second end of the first switch tube, common end
It is connect with the charging cathode of the charger, the control terminal and institute of the control terminal of the first switch tube and second constant-current source
State control module connection, wherein the constant current of second constant-current source is less than or equal to the perseverance of each first constant-current source
Constant current；
The control module, specifically for when there are the subject monomers battery, control second constant-current source is opened, controls institute
First switch tube shutdown is stated, so that the charging current of the charger reaches the predetermined current, and is controlled and the target list
First constant-current source of body battery parallel connection is opened, to fall the bypass charging current of the charger.
4. battery voltage balanced system according to claim 2, which is characterized in that the battery voltage balanced system further includes
Communication module；
The control module, specifically for when there are the subject monomers battery, generation communication instruction, and control and the targets
First constant-current source of single battery parallel connection is opened, to fall the bypass charging current of the charger；
The communication module, for the communication instruction to be sent to the charger, so that the charger is according to described logical
Its charging current is adjusted to the predetermined current by letter instruction.
5. battery voltage balanced system according to any one of claims 1-4, which is characterized in that the battery voltage balanced
System further include:
Overcurrent protection module, when the charging current is more than preset value, executes overcurrent protection for obtaining the charging current
Operation.
6. battery voltage balanced system according to claim 5, which is characterized in that the overcurrent protection module includes:
One resistance, second switch, OCD, in which:
The first end of the first resistor is connect with the cathode of the battery pack, the second end of the first resistor and described second
The second end of switching tube connects, and the first end of the second switch is connect with the cathode of the battery charging and discharging system, described
The control terminal of second switch is connect with the control module；
The OCD, for detecting the electric current Jing Guo the first resistor, when the electric current is greater than preset value, generation triggering command；
The control module is also used to after receiving the triggering command, controls the second switch shutdown.
7. battery voltage balanced system according to claim 3, which is characterized in that first constant-current source and described second
Constant-current source includes concatenated third switching tube and second resistance.
8. battery voltage balanced system according to claim 7, which is characterized in that first constant-current source and described second
Constant-current source further includes amplifier, and the non-inverting input terminal of the amplifier is connect with reference power source, and the reverse phase of the amplifier is defeated
Enter end to connect with the common end of the third switching tube and the second resistance, the output end of the amplifier is opened with the third
Close the control terminal connection of pipe.
9. battery voltage balanced system according to claim 1, which is characterized in that the voltage detection module includes modulus
Converter ADC.
10. a kind of battery charging and discharging system, which is characterized in that including cell voltage as described in any one of claims 1-9
Equal balance system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429777.2A CN110071549A (en) | 2019-05-22 | 2019-05-22 | A kind of battery voltage balanced system and battery charging and discharging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429777.2A CN110071549A (en) | 2019-05-22 | 2019-05-22 | A kind of battery voltage balanced system and battery charging and discharging system |
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| CN110071549A true CN110071549A (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910429777.2A Withdrawn CN110071549A (en) | 2019-05-22 | 2019-05-22 | A kind of battery voltage balanced system and battery charging and discharging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474390A (en) * | 2019-08-06 | 2019-11-19 | 费县瑞昊机械制造有限公司 | Battery balanced device |
| CN112910036A (en) * | 2021-01-21 | 2021-06-04 | 重庆新源创实业有限公司 | Charging control method, device and system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645609A (en) * | 2008-08-08 | 2010-02-10 | 凹凸电子（武汉）有限公司 | Battery system, charging/discharging circuit thereof and charging/discharging control method thereof |
| CN201584799U (en) * | 2009-11-18 | 2010-09-15 | 徐成宪 | Equalizing charge system for rechargeable battery |
| CN201629586U (en) * | 2010-01-13 | 2010-11-10 | 深圳市京泉华电子有限公司 | Battery equalizing charge device |
| CN102185169A (en) * | 2011-04-13 | 2011-09-14 | 苏州星恒电源有限公司 | Charging method and charging device for lithium ion battery pack |
| CN102545335A (en) * | 2012-01-16 | 2012-07-04 | 海能达通信股份有限公司 | Balanced charge-discharge circuit and balanced charge-discharge method |
| CN103280858A (en) * | 2013-05-30 | 2013-09-04 | 杭州信控科技有限公司 | Charging method preventing overcharging of cells of lithium battery pack |
| CN203589787U (en) * | 2013-11-19 | 2014-05-07 | 杭州高特新能源技术有限公司 | Equalization circuit for lithium battery pack |
| WO2016066632A1 (en) * | 2014-10-28 | 2016-05-06 | Philip Morris Products S.A. | An adaptive battery charging method and system |
-
2019
- 2019-05-22 CN CN201910429777.2A patent/CN110071549A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645609A (en) * | 2008-08-08 | 2010-02-10 | 凹凸电子（武汉）有限公司 | Battery system, charging/discharging circuit thereof and charging/discharging control method thereof |
| CN201584799U (en) * | 2009-11-18 | 2010-09-15 | 徐成宪 | Equalizing charge system for rechargeable battery |
| CN201629586U (en) * | 2010-01-13 | 2010-11-10 | 深圳市京泉华电子有限公司 | Battery equalizing charge device |
| CN102185169A (en) * | 2011-04-13 | 2011-09-14 | 苏州星恒电源有限公司 | Charging method and charging device for lithium ion battery pack |
| CN102545335A (en) * | 2012-01-16 | 2012-07-04 | 海能达通信股份有限公司 | Balanced charge-discharge circuit and balanced charge-discharge method |
| CN103280858A (en) * | 2013-05-30 | 2013-09-04 | 杭州信控科技有限公司 | Charging method preventing overcharging of cells of lithium battery pack |
| CN203589787U (en) * | 2013-11-19 | 2014-05-07 | 杭州高特新能源技术有限公司 | Equalization circuit for lithium battery pack |
| WO2016066632A1 (en) * | 2014-10-28 | 2016-05-06 | Philip Morris Products S.A. | An adaptive battery charging method and system |
Non-Patent Citations (2)
| Title |
|---|
| 刘海成: "《AVR单片机原理及测控工程应用——基于ATmega48/ATmega16》", 31 March 2008, 北京航空航天大学出版社 * |
| 李朝青: "《新型电源IC技术手册》", 31 October 2012, 北京航空航天大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474390A (en) * | 2019-08-06 | 2019-11-19 | 费县瑞昊机械制造有限公司 | Battery balanced device |
| CN112910036A (en) * | 2021-01-21 | 2021-06-04 | 重庆新源创实业有限公司 | Charging control method, device and system |
| CN112910036B (en) * | 2021-01-21 | 2022-08-09 | 重庆新源创实业有限公司 | Charging control method, device and system |
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Application publication date: 20190730 |