CN105703447B - The direct balance charging method of rechargeable battery set - Google Patents
The direct balance charging method of rechargeable battery set Download PDFInfo
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- CN105703447B CN105703447B CN201610235344.XA CN201610235344A CN105703447B CN 105703447 B CN105703447 B CN 105703447B CN 201610235344 A CN201610235344 A CN 201610235344A CN 105703447 B CN105703447 B CN 105703447B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 42
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 23
- 238000013461 design Methods 0.000 claims description 21
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 18
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass 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
- H02J7/0013—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
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H02J7/0021—
-
- 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
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses the direct balancing charging apparatus and method of a kind of rechargeable battery set, including A battery core module, B battery core module, battery controller and charging DC power supply, A battery core module is laminated with several B battery core modules in A battery core module as bottom module；The anode control electronic switch in parallel that rechargeable battery set charges between positive input terminal and A battery core anode is connected to comprising an A battery core, one inside the A battery core module, A battery core anode draws an A battery core voltage monitoring signal wire, and A battery core voltage monitoring signal wire is connected with the battery core voltage monitoring end of battery controller；A battery core cathode is connected with rechargeable battery set negative output terminal, and battery group of the invention or super capacitor group can receive lower charging voltage, while the output voltage that discharges can be by the series connection and adjustment in parallel of module.Secondary voltage balancing run is carried out without the voltage to single battery core or super capacitor during the charging process, reduces the charging time.
Description
Technical field
The present invention relates to a kind of charging system, in particular to the direct balance charging method of a kind of rechargeable battery set.
Background technique
Battery power supply is the electric power source that power supply is supplied to relevant electronic device, and be applied to power supply device can
To be the battery pack (multicellbattery) with multiple batteries.Due to using battery pack, rather than single battery
Relationship can apply high voltage, or increase capacity.However, because battery itself has the characteristic of charge and discharge, the voltage meeting of each battery
Become uneven as the time changes.Voltage difference between battery in battery pack may generate the imbalance between battery, thus
Consume the capacity of battery pack.About this, there are many battery balancing systems and method to balance each battery, avoids all batteries
It overcharges, and equilibrium charging.
There is a kind of method in the prior art, electric current is allowed to flow to battery pack high voltage appearance battery by resistance etc., to adjust
Whole battery equilibrium.Although the method is full simple, it has a disadvantage, i.e., if can increase when unbalanced high-voltage battery increases
Add discharge current and heat can be generated.In addition to this, the further drawback of the method is in all batteries of battery pack, to balance quilt
It is adjusted to the battery with minimum voltage value.In addition to this, a kind of permission charging current flows through low-voltage battery in battery pack
Method to adjust balance.The method uses DC-to-dc converter, and advantage is that efficiency is in general all very high, and generates
Thermal energy it is seldom.However, the method also has a disadvantage, i.e., if when the number of batteries of low-voltage increases, the electricity of entire battery pack
Cell voltage can be more original than its minimum voltage it is also low.Moreover, when reading the voltage of each battery, because of the pass of read access time difference
It is that can generate very big difference between the voltage read.Due to the difference of voltage read access time, battery balancing system can determine whether electricity
Pond is unbalanced.According to the time that each cell voltage is read, there are difference for voltage value, especially use in lithium ion battery
Line selecting device adjusts the device of the balance of voltage.In existing battery equilibrium adjustment device, carried when by load device
When entering electric current, the electrode voltage (ternimal voltage) of battery can change with the variation for being loaded into electric current.Load device
Load can change over time.Therefore, when the electrode voltage for reading battery, and it is filled by route choosing
It sets when comparing in central processing unit, even if the voltage of all batteries is actually to balance, can still read each battery respectively
Electrode voltage value.So central processing unit can determine whether that each battery is imbalance, balance control signal is exported then to control
Balance current control section.In battery balancing system, when reading cell terminal voltage by line voltage selecting device, if
Load current does not change in the battery, then can find that cell terminal voltage does not also change.Therefore, central processing unit can determine whether
The voltage of battery electrode is balance.However, when load current varies, cell terminal voltage can also change.Therefore, work as loading
When electric current changes in real time, central processing unit can determine whether that the electrode voltage of battery is to become uneven, because of band as the time changes
The load variation come results in voltage reading difference.Like this, when central processing unit reads battery using line selecting device
When electrode voltage, since the time of selection battery electrode is different, the cell terminal voltage read may be different.
Therefore, it is necessary to a kind of battery balancing system or method, it can be reduced in battery system and read cell voltage
Error is performed quickly the balance of voltage, and increases the accuracy of the balance of voltage.
According to the prior art, battery balancing system has various condition limitations.For example, only do not have in system itself
The balance of voltage can be just carried out when running.Due to the relationship of these limitations, voltage balancing operation becomes complicated, can consume unnecessary
Time, and the accuracy of the balance of voltage can be reduced.
Summary of the invention
The purpose of the present invention is to provide a kind of direct balance charging methods of rechargeable battery set, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides a kind of direct balancing charging apparatus of rechargeable battery set, including A battery core mould
Block, B battery core module, battery controller and charging DC power supply, the A battery core module is as bottom module, the A battery core mould
Several B battery core modules are laminated on block；Rechargeable battery set is connected to comprising an A battery core, one inside the A battery core module
Anode control electronic switch (SW1) in parallel charged between positive input terminal and A battery core anode, the A battery core anode draw an A
Battery core voltage monitoring signal wire (Signal1), the battery core of A battery core voltage monitoring signal wire (Signal1) and battery controller
Voltage monitoring end is connected；A battery core cathode is connected with rechargeable battery set negative output terminal；
Rechargeable battery set charging positive input terminal and B electricity are connected to comprising a B battery core, one inside the B battery core module
The positive interpolar of core parallel connection anode control electronic switch (SW1), one be connected between rechargeable battery set negative output terminal and B battery core cathode
Cathode in parallel control electronic switch (SW2) and a negative output terminal being connected to after the series connection of B battery core module and B battery core it is negative
Series control electronic switch (SW3) between pole, B battery core anode draw B battery core voltage monitoring signal wire (Signal1) with
The battery core voltage monitoring end of battery controller is connected；The battery controller seals together with A battery core module and B battery core module
Loaded in rechargeable battery assembly housing, battery core voltage monitoring input terminal is set, for monitoring every battery core just on battery controller
Extremely to the voltage between rechargeable battery set negative output terminal；Anode control electronic switch controling end in parallel controls electronics with cathode in parallel
Switch control terminal, for controlling being connected in parallel for battery core；Series control electronic switch controling end, the series connection for controlling battery core connect
It connects；Battery controller is communicated by data/address bus with charging DC power supply, is provided needed for battery pack to charging DC power supply
Charging requirement；
It is described charging DC power supply input terminal connect with power supply grid, it is described charge DC power supply charging output end and
The connection of rechargeable battery set charging input end, the power supply output end and battery controller feeder ear of the charging DC power supply connect
It connects, the charging DC power supply passes through data/address bus and battery controller communication；
The cathode of battery core in the A battery core module is connected with rechargeable battery set negative output terminal, in the A battery core module
The anode of battery core is connected with the series control electronic switch (SW3) being arranged in first order B battery core module；Several described B battery cores
Block coupled in series connection.
In the above-mentioned technical solutions, the battery controller built-in temperature sensor, for monitoring entire battery pack
State of temperature.
In the above-mentioned technical solutions, the charging DC power supply is separated with rechargeable battery set.
In the above-mentioned technical solutions, single output voltage design in, in afterbody B battery core module battery core anode with fill
Electric battery pack positive output end is connected；In multi-output voltages design, battery pack charging positive input terminal and battery pack positive output end phase
Even.
Invention also provides the direct balance charging methods of above-mentioned rechargeable battery set, include following operating mode:
(1), storage mode: when battery controller both confiscates charging signals, also confiscates discharge signal, battery pack
Into storage mode.Battery controller disconnects whole control electronic switches in all modules at this time.Make battery pack from power consumption
It is preferably minimized；
(2), charge mode: when the DC power supply that charges accesses, battery pack enters charge mode, and battery controller is first
Cathode in parallel control electronic switch (SW2) conducting in whole battery core modules is controlled, all other control electronic cuttings are simultaneously switched off
It closes, the cathode of whole battery cores is connected with battery pack negative output terminal in battery pack at this time, each electricity of battery controller precise measurement
The virtual voltage of core automatically selects charge mode according to the battery core virtual voltage of acquisition；It is lower than electricity when there are individual battery core voltages
When core limits voltage, charging operations are terminated, and report an error by indicator light prompt；
(3), charge mode 1:
When each battery core residual voltage is higher, into charge mode 1:
Battery controller first sends the low-voltage charging signals for meeting single-unit battery core and charging to charging DC power supply, to true
Recognize charging DC power supply charging output end voltage it is correct after, battery controller controls the parallel connection anode control in whole battery core modules
Electronic switch (SW1) conducting processed, and keep conducting and all series controls electricity of all cathode controls electronic switch (SW2) in parallel
The disconnection of sub switch (SW3), the anode of whole battery cores is connected with charging positive input terminal at this time, cathode and charging negative input end phase
Even；All battery cores are connected in parallel way charging at this time, and all battery cores reach identical charging complete electricity simultaneously at the end of charging
Pressure；
(4), charge mode 2:
When each battery core residual voltage is lower, into charge mode 2:
At this time in order to reduce the electric current of charging input end.Battery controller first meets whole to charging DC power supply transmission
The high-voltage charge signal of battery core serial connection charge, after charging DC power supply charging output end voltage to be confirmed is correct, battery pack control
Device processed disconnects the control of the cathode in parallel in all battery core modules electronic switch (SW2), then controls the string in all battery core modules
Parallel connection anode control electronic switch (SW1) conducting in joint control electronic switch (SW3) and afterbody B battery core module, and protect
Hold the disconnection of other control electronic switches；All battery cores are connected in series system charging at this time；Battery controller is real-time simultaneously
The virtual voltage for monitoring each battery core, when each battery core virtual voltage is close to charging complete voltage, battery controller is cut automatically
Charge mode is changed to charge mode 1；
(5), charge mode 3:
When there is part battery core voltage to differ larger with other battery cores, into charge mode 3:
Battery controller first sends the low-voltage charging signals for meeting single-unit battery core and charging to charge power supply, to be confirmed to fill
After direct current electric source charging output end voltage is correct, battery controller controls the parallel connection in the lower battery core module of battery core voltage
Anode control electronic switch (SW1) conducting, and the cathode in parallel in all battery core modules is kept to control leading for electronic switch (SW2)
Logical and series control electronic switch (SW3) disconnection；Charging, while electricity only are compensated to the lower battery core of battery core voltage at this time
Pond group controller accurately monitors the virtual voltage of battery core in other battery core modules；Reach the voltage of the battery core by compensating charge
The average virtual voltage of other battery cores.After the completion of compensating charge, battery controller is automatic according to the virtual voltage of each battery core
Switch charge mode to charge mode 1 or charge mode 2；
(6), discharge mode:
Battery pack is divided into: single output voltage design, multi-output voltages design；
In the design of single output voltage, when battery controller receives electric discharge output signal, battery pack enters electric discharge
Mode；Battery controller controls the conducting of the series control electronic switch (SW3) in all battery core modules, while keeping other controls
The disconnection of electronic switch processed；Battery core is connected in series connection in battery pack at this time, and battery pack output end voltage is all battery core electricity
The sum of pressure；
In multi-output voltages design, when battery controller receives electric discharge output signal and output voltage level setting
When, battery pack enters discharge mode；Battery controller passes through the series control electronic switch in the battery core module of control section
(SW3), parallel connection anode control electronic switch (SW1) in the battery core module of part and the cathode in parallel control in the battery core module of part
The conducting of electronic switch (SW2), while keeping the disconnection of remaining control electronic switch；Make battery by being first connected in series again simultaneously
Couple into battery pack output end, to obtain different battery pack output end voltages；
(7), monitoring pattern:
During charging and discharging, battery controller monitors the virtual voltage and battery pack temperature of each battery core；If
Parameter is more than secure threshold, selects termination charge or discharge process at once.And it is reported an error by indicator light prompt.
The direct balance charging method of offer of the invention can be applied in battery group can also be applied to super capacitor group
In；Super capacitor is substituted into cell, while parameter is arranged according to super capacitor parameter change battery controller.This hair
Bright feature is that battery group or super capacitor group can receive lower charging voltage, while the output voltage that discharges can lead to
Cross the series connection and adjustment in parallel of module.Secondary voltage is carried out without the voltage to single battery core or super capacitor during the charging process
Balancing run reduces the charging time.When the super capacitor group for having used the equilibrium charging to design is applied to electric vehicle energy
When recycling, since the super capacitor group can support a variety of charging voltages, can according to by driving motor in vehicle in slowing-down brake
The output voltage of generation flexibly switches the connection structure between super capacitor group interior super capacitor, changes the charging electricity needed for it
Pressure, to realize the maximization recycling of energy.It, then can be according to the defeated of the actual needs adjustment super capacitor group of driving motor when starting
Voltage out.
The present invention of above-mentioned technical proposal has following technological progress:
1, guarantee that each battery core reaches 100% at the end of charging and is full of in the case where being not necessarily to recharging equilibrium step
State；2. realize that charging Shi Keyong lower voltage is that battery pack charges, when electric discharge battery pack can export higher electric discharge export it is electric
Pressure；3. realizing battery pack to the compatibility of a variety of charging voltages by the series/parallel combination of several batteries in battery pack；4. charging
When by each battery core in battery controller monitoring battery pack voltage, and determine the series/parallel side of internal battery pack battery
Formula.To improve charging rate；5. battery controller is changed by the series/parallel combination to battery when electric discharge, realize different
The output of voltage.
Detailed description of the invention
Fig. 1 is that schematic equivalent circuit is applied in 4 economize on electricity core module univoltage outputs of the invention；
Fig. 2 is that schematic equivalent circuit is applied in 4 economize on electricity core module multivoltage outputs of the invention；
Fig. 3 is A battery core module schematic equivalent circuit of the invention；
Fig. 4 is A battery core module univoltage output circuit schematic diagram of the invention；
Fig. 5 is A battery core module multivoltage output circuit schematic diagram of the invention；
Fig. 6 is B battery core module equivalent circuit of the invention；
Fig. 7 is B battery core module univoltage output circuit schematic diagram of the invention；
Fig. 8 is B battery core module multivoltage output circuit schematic diagram of the invention；
Fig. 9 is 1 equivalent schematic of charge mode of the invention；
Figure 10 is 2 equivalent schematic of charge mode of the invention；
Figure 11 is 1 equivalent schematic of discharge mode of the invention；
Figure 12 is 2 equivalent schematic of discharge mode of the invention；
Figure 13 is the apparatus structure schematic diagram of invention；
In single output voltage circuit diagram:
A battery core module:
IN+ is charging positive input terminal；
IN-/OUT- is charging negative input end and battery pack negative output terminal；
The port SW1 is that anode in parallel controls signal, is connected with battery controller control signal output；
1 port Signal is that voltage monitoring acquires route, is connected with battery controller battery core voltage monitoring input terminal；
SW1 module is that anode in parallel controls electronic switch；
B battery core module:
IN+ is charging positive input terminal；
IN-/OUT- is charging negative input end and battery pack negative output terminal；
The port SW1 is that anode in parallel controls signal, is connected with battery controller control signal output；
The port SW2 is that cathode in parallel controls signal, is connected with battery controller control signal output；
The port SW3 is series control signal, is connected with battery controller control signal output；
1 port Signal is that voltage monitoring acquires route, is connected with battery controller battery core voltage monitoring input terminal；
SW1 module is that anode in parallel controls electronic switch；
SW2 module is that cathode in parallel controls electronic switch；
SW3 module is series control electronic switch.
Multi-output voltages design:
A battery core module:
IN+/OUT+ is charging positive input terminal and battery pack positive output end；
IN-/OUT- is charging negative input end and battery pack negative output terminal；
The port SW1.1 is that anode in parallel controls signal-brake tube M1.1, is connected with battery controller control signal output；
The port SW1.2 is that anode in parallel controls signal-brake tube M1.2, is connected with battery controller control signal output；
1 port Signal is that voltage monitoring acquires route, is connected with battery controller battery core voltage monitoring input terminal；
SW1 module is that anode in parallel controls electronic switch；
B battery core module:
IN+/OUT- is charging positive input terminal and battery pack positive output end；
IN-/OUT- is charging negative input end and battery pack negative output terminal；
The port SW1.1 is that anode in parallel controls signal-brake tube M1.1, is connected with battery controller control signal output；
The port SW1.2 is that anode in parallel controls signal-brake tube M1.2, is connected with battery controller control signal output；
The port SW2 is that cathode in parallel controls signal, is connected with battery controller control signal output；
The port SW3 is series control signal, is connected with battery controller control signal output；
1 port Signal is that voltage monitoring acquires route, is connected with battery controller battery core voltage monitoring input terminal；
SW1 module is that anode in parallel controls electronic switch；
SW2 module is that cathode in parallel controls electronic switch；
SW3 module is series control electronic switch.
Specific embodiment
Purpose, structure, feature and effect to facilitate the understanding of the present invention etc., now in conjunction with attached drawing and specific implementation
The present invention is described in further detail for example.
The direct balance charging method based on rechargeable battery set in the present invention, as shown in Figures 1 to 12.Filling described in it
The direct balancing charging apparatus of electric battery pack, including A battery core module, B battery core module, battery controller and charging direct current
Source, A battery core module are laminated with several B battery core modules in A battery core module as bottom module；It include one inside A battery core module
A battery core, an anode in parallel being connected between rechargeable battery set charging positive input terminal and A battery core anode control electronic switch
(SW1), A battery core anode draws an A battery core voltage monitoring signal wire (Signal1), A battery core voltage monitoring signal wire
(Signal1) it is connected with the battery core voltage monitoring end of battery controller；A battery core cathode and rechargeable battery set negative output terminal phase
Even；Rechargeable battery set charging positive input terminal and the positive interpolar of B battery core are connected to comprising a B battery core, one inside B battery core module
Anode control electronic switch (SW1), a cathode in parallel being connected between rechargeable battery set negative output terminal and B battery core cathode in parallel
String between control electronic switch (SW2) and a negative output terminal and B battery core cathode being connected to after the series connection of B battery core module
Joint control electronic switch (SW3), B battery core anode draws a B battery core voltage monitoring signal wire (Signal1) and battery pack controls
The battery core voltage monitoring end of device is connected；Battery controller is packaged in rechargeable battery set together with A battery core module and B battery core module
In shell, battery core voltage monitoring input terminal is set, for monitoring every battery core anode to rechargeable battery set on battery controller
Voltage between negative output terminal；Anode control electronic switch controling end in parallel controls electronic switch controling end with cathode in parallel, uses
In being connected in parallel for control battery core；Series control electronic switch controling end, for controlling the series connection of battery core；Battery pack control
Device is communicated by data/address bus with charging DC power supply, charging requirement needed for providing battery pack to charging DC power supply；Charging
The input terminal of DC power supply is connect with power supply grid, the charging output end and rechargeable battery set charging input end of the DC power supply that charges
Connection, the power supply output end for the DC power supply that charges are connect with battery controller feeder ear, and charging DC power supply is total by data
Line and battery controller communication；The cathode of battery core in A battery core module is connected with rechargeable battery set negative output terminal, A battery core mould
The anode of battery core in block is connected with the series control electronic switch (SW3) being arranged in first order B battery core module；It is described several
B battery core module is connected in series.Battery controller is built-in for monitoring the temperature sensor of the state of temperature of entire battery pack.It fills
Direct current electric source is separated with rechargeable battery set.Single output voltage design in, in afterbody B battery core module battery core anode with
Rechargeable battery set positive output end is connected；In multi-output voltages design, battery pack charging positive input terminal and battery pack positive output end
It is connected.
The direct balance charging method of rechargeable battery set includes following operating mode:
(1), storage mode: when battery controller both confiscates charging signals, also confiscates discharge signal, battery pack
Into storage mode.Battery controller disconnects whole control electronic switches in all modules at this time.Make battery pack from power consumption
It is preferably minimized；
(2), charge mode: when the DC power supply that charges accesses, battery pack enters charge mode, and battery controller is first
Cathode in parallel control electronic switch (SW2) conducting in whole battery core modules is controlled, all other control electronic cuttings are simultaneously switched off
It closes, the cathode of whole battery cores is connected with battery pack negative output terminal in battery pack at this time, each electricity of battery controller precise measurement
The virtual voltage of core automatically selects charge mode according to the battery core virtual voltage of acquisition；It is lower than electricity when there are individual battery core voltages
When core limits voltage, charging operations are terminated, and report an error by indicator light prompt；
(3), charge mode 1:
When each battery core residual voltage is higher, into charge mode 1:
Battery controller first sends the low-voltage charging signals for meeting single-unit battery core and charging to charging DC power supply, to true
Recognize charging DC power supply charging output end voltage it is correct after, battery controller controls the parallel connection anode control in whole battery core modules
Electronic switch (SW1) conducting processed, and keep conducting and all series controls electricity of all cathode controls electronic switch (SW2) in parallel
The disconnection of sub switch (SW3), the anode of whole battery cores is connected with charging positive input terminal at this time, cathode and charging negative input end phase
Even；All battery cores are connected in parallel way charging at this time, and all battery cores reach identical charging complete electricity simultaneously at the end of charging
Pressure；
(4), charge mode 2:
When each battery core residual voltage is lower, into charge mode 2:
At this time in order to reduce the electric current of charging input end.Battery controller first meets whole to charging DC power supply transmission
The high-voltage charge signal of battery core serial connection charge, after charging DC power supply charging output end voltage to be confirmed is correct, battery pack control
Device processed disconnects the control of the cathode in parallel in all battery core modules electronic switch (SW2), then controls the string in all battery core modules
Parallel connection anode control electronic switch (SW1) conducting in joint control electronic switch (SW3) and afterbody B battery core module, and protect
Hold the disconnection of other control electronic switches；All battery cores are connected in series system charging at this time；Battery controller is real-time simultaneously
The virtual voltage for monitoring each battery core, when each battery core virtual voltage is close to charging complete voltage, battery controller is cut automatically
Charge mode is changed to charge mode 1；
(5), charge mode 3:
When there is part battery core voltage to differ larger with other battery cores, into charge mode 3:
Battery controller first sends the low-voltage charging signals for meeting single-unit battery core and charging to charge power supply, to be confirmed to fill
After direct current electric source charging output end voltage is correct, battery controller controls the parallel connection in the lower battery core module of battery core voltage
Anode control electronic switch (SW1) conducting, and the cathode in parallel in all battery core modules is kept to control leading for electronic switch (SW2)
Logical and series control electronic switch (SW3) disconnection；Charging, while electricity only are compensated to the lower battery core of battery core voltage at this time
Pond group controller accurately monitors the virtual voltage of battery core in other battery core modules；Reach the voltage of the battery core by compensating charge
The average virtual voltage of other battery cores.After the completion of compensating charge, battery controller is automatic according to the virtual voltage of each battery core
Switch charge mode to charge mode 1 or charge mode 2；
(6), discharge mode:
Battery pack is divided into: single output voltage design, multi-output voltages design；
In the design of single output voltage, when battery controller receives electric discharge output signal, battery pack enters electric discharge
Mode；Battery controller controls the conducting of the series control electronic switch (SW3) in all battery core modules, while keeping other controls
The disconnection of electronic switch processed；Battery core is connected in series connection in battery pack at this time, and battery pack output end voltage is all battery core electricity
The sum of pressure；
In multi-output voltages design, when battery controller receives electric discharge output signal and output voltage level setting
When, battery pack enters discharge mode；Battery controller passes through the series control electronic switch in the battery core module of control section
(SW3), parallel connection anode control electronic switch (SW1) in the battery core module of part and the cathode in parallel control in the battery core module of part
The conducting of electronic switch (SW2), while keeping the disconnection of remaining control electronic switch；Make battery by being first connected in series again simultaneously
Couple into battery pack output end, to obtain different battery pack output end voltages；
(7), monitoring pattern:
During charging and discharging, battery controller monitors the virtual voltage and battery pack temperature of each battery core；If
Parameter is more than secure threshold, selects termination charge or discharge process at once.And it is reported an error by indicator light prompt.
It is a feature of the present invention that battery group or super capacitor group can receive lower charging voltage, discharge simultaneously
Output voltage can pass through the series connection and adjustment in parallel of module.During the charging process without the voltage to single battery core or super capacitor
Secondary voltage balancing run is carried out, the charging time is reduced.When the super capacitor group for having used the equilibrium charging to design is applied to
It, can be according to by driving motor in vehicle since the super capacitor group can support a variety of charging voltages when electric vehicle energy regenerating
The output voltage generated in slowing-down brake flexibly switches the connection structure between super capacitor group interior super capacitor, changes its institute
The charging voltage needed, to realize the maximization recycling of energy.When starting, then it can be adjusted according to the actual needs of driving motor super
The output voltage of capacitance group.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of direct balance charging method of rechargeable battery set, it is characterised in that: including A battery core module, B battery core module, electricity
Pond group controller and charging DC power supply, the A battery core module are laminated with several as bottom module in the A battery core module
A B battery core module；
Rechargeable battery set charging positive input terminal and A battery core are being connected to just comprising an A battery core, one inside the A battery core module
Parallel connection anode control electronic switch (SW1) between pole, the A battery core anode draw an A battery core voltage monitoring signal wire
(Signal1), A battery core voltage monitoring signal wire (Signal1) is connected with the battery core voltage monitoring end of battery controller；A electricity
Core cathode is connected with rechargeable battery set negative output terminal；
Rechargeable battery set charging positive input terminal and B battery core are being connected to just comprising a B battery core, one inside the B battery core module
Interpolar parallel connection anode control electronic switch (SW1), one it is being connected between rechargeable battery set negative output terminal and B battery core cathode and
Connection cathode control electronic switch (SW2) and one be connected to B battery core module series connection after negative output terminal and B battery core cathode it
Between series control electronic switch (SW3), B battery core anode draws a B battery core voltage monitoring signal wire (Signal1) and battery
The battery core voltage monitoring end of group controller is connected；
The battery controller is packaged in rechargeable battery assembly housing together with A battery core module and B battery core module, battery pack control
Battery core voltage monitoring input terminal is set on device processed, for monitoring every battery core anode to the electricity between rechargeable battery set negative output terminal
Pressure；Anode control electronic switch controling end in parallel controls electronic switch controling end with cathode in parallel, for controlling the parallel connection of battery core
Connection；Series control electronic switch controling end, for controlling the series connection of battery core；Battery controller by data/address bus with
The DC power supply that charges communicates, charging requirement needed for providing battery pack to charging DC power supply；
The input terminal of the charging DC power supply is connect with power supply grid, the charging output end of the charging DC power supply and charging
The power supply output end of the connection of battery pack charging input end, the charging DC power supply is connect with battery controller feeder ear, institute
It states charging DC power supply and passes through data/address bus and battery controller communication；
The cathode of battery core in the A battery core module is connected with rechargeable battery set negative output terminal, the battery core in the A battery core module
Anode be connected with the series control electronic switch (SW3) being arranged in first order B battery core module；Several described B battery core modules
It is connected in series, the battery controller is built-in for monitoring the temperature sensor of the state of temperature of entire battery pack, described to fill
Direct current electric source is separated with rechargeable battery set, single output voltage design in, in afterbody B battery core module battery core anode with
Rechargeable battery set positive output end is connected；In multi-output voltages design, battery pack charging positive input terminal and battery pack positive output end
It is connected；
The method of charging includes following operating mode:
(1), storage mode: when battery controller both confiscates charging signals, also confiscates discharge signal, battery pack enters
Storage mode；Battery controller disconnects whole control electronic switches in all modules at this time；Drop to battery pack from power consumption
It is minimum；
(2), charge mode: when the DC power supply that charges accesses, battery pack enters charge mode, and battery controller controls first
Cathode in parallel control electronic switch (SW2) conducting in whole battery core modules, simultaneously switches off all other control electronic switches, this
When battery pack in the cathode of whole battery cores be connected with battery pack negative output terminal, the reality of each battery core of battery controller precise measurement
Border voltage automatically selects charge mode according to the battery core virtual voltage of acquisition；It is limited when there are individual battery core voltages lower than battery core
When voltage, charging operations are terminated, and report an error by indicator light prompt；
(3), charge mode 1:
When each battery core residual voltage is higher, into charge mode 1:
Battery controller first sends the low-voltage charging signals for meeting single-unit battery core and charging to charging DC power supply, to be confirmed to fill
After direct current electric source charging output end voltage is correct, battery controller controls the parallel connection anode in whole battery core modules and controls electricity
Sub switch (SW1) conducting, and keep all cathode in parallel control electronic switch (SW2) conducting and all series control electronic cuttings
The disconnection of (SW3) is closed, the anode of whole battery cores is connected with charging positive input terminal at this time, and cathode is connected with charging negative input end；This
Shi Suoyou battery core is connected in parallel way charging, and all battery cores reach identical charging complete voltage simultaneously at the end of charging；
(4), charge mode 2:
When each battery core residual voltage is lower, into charge mode 2:
At this time in order to reduce the electric current of charging input end, battery controller first meets whole battery cores to charging DC power supply transmission
The high-voltage charge signal of serial connection charge, after charging DC power supply charging output end voltage to be confirmed is correct, battery controller
Cathode in parallel control electronic switch (SW2) in all battery core modules is disconnected, the series connection control in all battery core modules is then controlled
Parallel connection anode control electronic switch (SW1) conducting in electronic switch (SW3) processed and afterbody B battery core module, and keep it
It controls the disconnection of electronic switch；All battery cores are connected in series system charging at this time；Battery controller while real-time monitoring
The virtual voltage of each battery core, when each battery core virtual voltage is close to charging complete voltage, battery controller automatic switchover is filled
Power mode is to charge mode 1；
(5), charge mode 3:
When there is part battery core voltage to differ larger with other battery cores, into charge mode 3:
Battery controller first sends the low-voltage charging signals for meeting single-unit battery core and charging to charge power supply, and charging to be confirmed is straight
After stream power source charges output end voltage is correct, battery controller controls the parallel connection anode in the lower battery core module of battery core voltage
Control electronic switch (SW1) conducting, and keep cathode in parallel in all battery core modules control electronic switch (SW2) conducting and
The disconnection of series control electronic switch (SW3)；Charging, while battery pack only are compensated to the lower battery core of battery core voltage at this time
Controller accurately monitors the virtual voltage of battery core in other battery core modules；Make to reach other by the voltage of the battery core of compensating charge
The average virtual voltage of battery core；After the completion of compensating charge, battery controller automatically switches according to the virtual voltage of each battery core
Charge mode is to charge mode 1 or charge mode 2；
(6), discharge mode:
Battery pack is divided into: single output voltage design, multi-output voltages design；
In the design of single output voltage, when battery controller receives electric discharge output signal, battery pack enters discharge mode；
Battery controller controls the conducting of the series control electronic switch (SW3) in all battery core modules, while keeping other control electricity
The disconnection of sub switch；Battery core is connected in series connection in battery pack at this time, battery pack output end voltage be all battery core voltages it
With；
In multi-output voltages design, when battery controller receives electric discharge output signal and output voltage level is set,
Battery pack enters discharge mode；Battery controller by series control electronic switch (SW3) in the battery core module of control section,
Parallel connection anode control electronic switch (SW1) in the battery core module of part and the cathode in parallel in the battery core module of part control electronic cutting
The conducting of (SW2) is closed, while keeping the disconnection of remaining control electronic switch；Make battery by the way that access in parallel is first connected in series again
Battery pack output end, to obtain different battery pack output end voltages；
(7), monitoring pattern:
During charging and discharging, battery controller monitors the virtual voltage and battery pack temperature of each battery core；If parameter
More than secure threshold, termination charge or discharge process at once is selected；And it is reported an error by indicator light prompt.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235344.XA CN105703447B (en) | 2016-04-15 | 2016-04-15 | The direct balance charging method of rechargeable battery set |
| DE102017003719.1A DE102017003719A1 (en) | 2016-04-15 | 2017-04-15 | Device and method for charging the multi-cell battery with direct charge compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235344.XA CN105703447B (en) | 2016-04-15 | 2016-04-15 | The direct balance charging method of rechargeable battery set |
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| CN105703447B true CN105703447B (en) | 2019-09-03 |
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| CN106374559B (en) | 2016-09-14 | 2021-08-20 | 华为技术有限公司 | Method for rapid charging of series-connected battery packs and related device |
| CN107887935A (en) * | 2016-09-29 | 2018-04-06 | 天津三星通信技术研究有限公司 | Battery pack |
| CN106505672A (en) * | 2016-11-15 | 2017-03-15 | 电子科技大学 | A kind of series connected super-capacitor module charging balanced circuit and its equalization methods |
| CN107139747A (en) * | 2017-05-15 | 2017-09-08 | 南昌大学 | Electric automobile |
| CN107508357A (en) * | 2017-09-15 | 2017-12-22 | 启攀微电子（上海）有限公司 | A kind of more piece lithium battery management system in parallel |
| US10910847B2 (en) * | 2017-12-21 | 2021-02-02 | Eric Paul Grasshoff | Active cell balancing in batteries using switch mode dividers |
| TWI667863B (en) * | 2017-12-26 | 2019-08-01 | 國家中山科學研究院 | High voltage battery dynamic balance method |
| CN110224184A (en) * | 2018-03-01 | 2019-09-10 | 法法汽车(中国)有限公司 | Power battery, electric car and the control method to charge to the power battery |
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| CN110641316B (en) * | 2018-06-27 | 2023-04-28 | 法法汽车(中国)有限公司 | Power battery charging control circuit, charging control method and electric automobile |
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| CN109677296B (en) * | 2018-12-26 | 2022-08-05 | 法法汽车(中国)有限公司 | Power battery, control method thereof and electric automobile |
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| US11358486B2 (en) * | 2019-09-16 | 2022-06-14 | GM Global Technology Operations LLC | Electric powertrain with multi-pack battery system |
| CN111063950A (en) * | 2019-11-01 | 2020-04-24 | 深圳市道通智能航空技术有限公司 | Charging method and charging system |
| CN112217247B (en) * | 2020-08-23 | 2022-08-23 | 江西省世道新能源科技有限公司 | Energy storage equipment for lithium battery production and implementation method thereof |
| CN112687968A (en) * | 2020-12-04 | 2021-04-20 | 苏州易美新思新能源科技有限公司 | Intelligent lithium ion battery monomer and module thereof |
| CN112670607B (en) * | 2020-12-22 | 2023-09-05 | 江苏金帆电源科技有限公司 | Control system for multi-battery serial formation |
| CN113060019B (en) * | 2021-03-17 | 2023-01-31 | 蜂巢能源科技股份有限公司 | Power battery pack and control method thereof |
| DE102021211960A1 (en) | 2021-10-25 | 2023-04-27 | Robert Bosch Gesellschaft mit beschränkter Haftung | Energy storage system for electrically powered vehicles |
| CN114280487B (en) * | 2021-11-22 | 2023-12-15 | 贵州电网有限责任公司 | Novel voltage acquisition module for single storage battery |
| CN114887258B (en) * | 2022-05-13 | 2023-06-02 | 国网湖北省电力有限公司宜昌供电公司 | Transformer substation direct-current fire-fighting system based on lithium iron phosphate storage battery |
| CN114976506A (en) * | 2022-05-19 | 2022-08-30 | 盐城国投中科新能源科技有限公司 | Parallel device for starting lithium battery system and using method thereof |
| CN116799915B (en) * | 2023-06-29 | 2023-12-29 | 航天锂电科技(江苏)有限公司 | Voltage reduction equalization circuit of lithium battery pack and control method thereof |
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| CN105703447A (en) | 2016-06-22 |
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