CN107104482A - A kind of voltage active equalization circuit and accumulating system - Google Patents
A kind of voltage active equalization circuit and accumulating system Download PDFInfo
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- CN107104482A CN107104482A CN201710338342.8A CN201710338342A CN107104482A CN 107104482 A CN107104482 A CN 107104482A CN 201710338342 A CN201710338342 A CN 201710338342A CN 107104482 A CN107104482 A CN 107104482A
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- Prior art keywords
- electricity accumulating
- switching tube
- switching
- active equalization
- equalization circuit
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
-
- 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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4264—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing with capacitors
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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 a kind of voltage active equalization circuit, applied to accumulating system, accumulating system includes the 2N electricity accumulating units being sequentially connected in series, and the circuit includes N number of inductance, 1 electric capacity of 2N switching tube and N；The first end of i-th inductance is connected with the positive pole of the electricity accumulating units of 2i 1, second end of the i-th inductance is connected with the second end of the switching tubes of 2i 1 and the first end of 2i switching tubes respectively, second end of 2i switching tubes is connected with the positive pole of 2i electricity accumulating units, the first end of the switching tubes of 2i 1 is connected with the negative pole of the electricity accumulating units of 2i 1, the first end of the electric capacity of jth 1 is connected with the second end of the switching tubes of 2j 1, and the second end of the electric capacity of jth 1 is connected with the first end of the switching tubes of 2j 2.The switching device that the present invention is used is few, simple in construction, and cost is low, and the algorithm of controlling switch pipe turn-on and turn-off is also very simple.A kind of accumulating system disclosed by the invention equally has above-mentioned beneficial effect.
Description
Technical field
The present invention relates to electric voltage equalization technical field, more particularly to a kind of voltage active equalization circuit and accumulating system.
Background technology
Energy storage device based on the electric power storage monomer such as battery or super capacitor has been widely used for electric automobile and new energy
In the fields such as source generating.Because the voltage that single electric power storage monomer can be provided is limited, such as lithium battery monomer and super capacitor monomer
Output voltage will be typically less than 5V, therefore, generally meet actual high voltage need together by multiple electric power storages are monomer series-connected
Ask.But due to individual difference, the battery being cascaded or super capacitor monomer are easily showed during discharge and recharge
Go out that voltage is inconsistent, and increasing with access times, this voltage differences can be more and more obvious.If taking no action to solution
Certainly this problem, gently then influences the power reservoir capacity of electric power storage monomer, it is heavy then cause electric power storage monomer damage in addition trigger it is quick-fried according to etc. it is safe
Accident.
In order to solve the above technical problems, in the prior art solution the simplest using resistance to overtension
Battery or the electric discharge of super capacitor monomer.But this scheme not only causes the waste of energy, the heat pipe of accumulating system is also increased
Reason burden.It is various based on electric power electricity in order to realize the recycling of energy while electric power storage monomer voltage uniformity is ensured
The voltage active equalization system of sub- power conversion technology is also suggested in succession, such as using Buck-Boost power-varying circuitries and
Switching capacity power circuit, but the active equalization system based on Buck-Boost power conversion circuits and switching capacity power circuit
In, the switching device that this kind of system is used is more, complicated, and cost is high, and generally also needs to coordinate complicated control algolithm.
Therefore, how to provide a kind of scheme for solving above-mentioned technical problem is that those skilled in the art need solution at present
Problem.
The content of the invention
It is an object of the invention to provide a kind of voltage active equalization circuit, the switching device used is few, simple in construction, cost
Low, the algorithm of controlling switch pipe turn-on and turn-off is also very simple；Include above-mentioned voltage it is a further object of the present invention to provide one kind
The accumulating system of active equalization circuit.
In order to solve the above technical problems, the invention provides a kind of voltage active equalization circuit, applied to accumulating system, institute
State the electricity accumulating units that accumulating system is sequentially connected in series including 2N, N is positive integer, the circuit include N number of inductance, 2N switching tube and
N-1 electric capacity, wherein, first switch pipe, the 3rd switching tube are simultaneously turned on or turned off up to 2N-1 switching tubes, second switch
Pipe, the 4th switching tube are until 2N switching tubes are simultaneously turned on or turned off, and 2i-1 switching tubes and the complementation of 2i switching tubes are turned on, i
To be not more than N positive integer；
The first end of i-th inductance is connected with the positive pole of 2i-1 electricity accumulating units, the second end of the i-th inductance respectively with 2i-1
Second end of switching tube and the first end connection of 2i switching tubes, the second end and the 2i electricity accumulating units of the 2i switching tubes
Positive pole is connected, and the first end of 2i-1 switching tubes is connected with the negative pole of 2i-1 electricity accumulating units, the first end of the electric capacity of jth -1 and the
The second end connection of 2j-1 switching tubes, the second end of the electric capacity of jth -1 is connected with the first end of 2j-2 switching tubes, and j is not less than 2
No more than N positive integer.
Preferably, the circuit also includes：
N number of resistance, wherein, the i-th resistance is connected in series with the i-th inductance.
Preferably, the circuit also includes：
N-1 resonant inductor, wherein, the resonant inductor of jth -1 is connected in series with the electric capacity of jth -1.
Preferably, the switching tube is NMOS, wherein, NMOS source electrode as the switching tube first end, NMOS's
The second end drained as the switching tube.
Preferably, the switching tube is PMOS, wherein, PMOS drain electrode as the switching tube first end, PMOS's
Source electrode as the switching tube the second end.
Preferably, the electricity accumulating unit is for single battery cell or by multiple single battery cells battery in series
Group or single super capacitor monomer or by the monomer series-connected super capacitor group of multiple single super capacitors.
In order to solve the above technical problems, present invention also offers a kind of accumulating system, including the 2N electric power storages being sequentially connected in series
Unit, N is positive integer, in addition to voltage active equalization circuit described above.
The invention provides a kind of voltage active equalization circuit, applied to accumulating system, accumulating system includes 2N successively
The electricity accumulating unit of series connection, N is positive integer, and the circuit includes N number of inductance, 2N switching tube and N-1 electric capacity, wherein, first opens
Guan Guan, the 3rd switching tube are until 2N-1 switching tubes are simultaneously turned on or turned off, and second switch pipe, the 4th switching tube are until 2N is opened
Close pipe to simultaneously turn on or turn off, 2i-1 switching tubes and the complementation of 2i switching tubes are turned on, and i is no more than N positive integer；I-th electricity
The first end of sense is connected with the positive pole of 2i-1 electricity accumulating units, the second end of the i-th inductance respectively with 2i-1 switching tubes second
The first end connection of end and 2i switching tubes, the second end of 2i switching tubes is connected with the positive pole of 2i electricity accumulating units, 2i-1
The first end of switching tube is connected with the negative pole of 2i-1 electricity accumulating units, and the of the first end of the electric capacity of jth -1 and 2j-1 switching tubes
Two ends are connected, and the second end of the electric capacity of jth -1 is connected with the first end of 2j-2 switching tubes, and j is just whole for the no more than N's not less than 2
Number.
The present invention is capable of the characteristic of discharge and recharge using inductance and electric capacity, by the turn-on and turn-off of controlling switch pipe, realizes
The energy of the high electricity accumulating unit of voltage is turned into the low electricity accumulating unit of voltage, the balancing energy of all electricity accumulating units is finally realized,
Namely the voltage uniformity of all electricity accumulating units is realized, the switching device that the present invention is used is few, and simple in construction, cost is low, control
The algorithm of switching tube turn-on and turn-off is also very simple.
The accumulating system that the present invention is provided also has as above beneficial effect.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
A kind of structural representation for voltage active equalization circuit that Fig. 1 provides for the present invention；
A kind of structural representation for specific ground voltage active equalization circuit that Fig. 2 provides for the present invention；
Fig. 3 is a kind of operation mode schematic diagram of the voltage active equalization circuit shown in Fig. 2；
Fig. 4 is another operation mode schematic diagram of the voltage active equalization circuit shown in Fig. 2；
Fig. 5 is the emulation testing oscillogram of the voltage active equalization circuit shown in Fig. 2.
Embodiment
The core of the present invention is to provide a kind of voltage active equalization circuit, and the switching device used is few, simple in construction, cost
Low, the algorithm of controlling switch pipe turn-on and turn-off is also very simple；Another core of the present invention is to provide a kind of including above-mentioned voltage
The accumulating system of active equalization circuit.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is refer to, a kind of structural representation for voltage active equalization circuit that Fig. 1 provides for the present invention, the system should
For accumulating system, accumulating system includes the electricity accumulating units that 2N is sequentially connected in series, and N is positive integer, the circuit include N number of inductance,
2N switching tube and N-1 electric capacity, wherein, first switch pipe S1, the 3rd switching tube S3 are until 2N-1 switching tubes are simultaneously turned on
Or shut-off, second switch pipe S2, the 4th switching tube S4 are until 2N switching tubes are simultaneously turned on or turned off, 2i-1 switching tubes and the
The complementation conducting of 2i switching tubes, i is no more than N positive integer；
The first end of i-th inductance is connected with the positive pole of 2i-1 electricity accumulating units, the second end of the i-th inductance respectively with 2i-1
Second end of switching tube and the first end connection of 2i switching tubes, the second end of 2i switching tubes and the positive pole of 2i electricity accumulating units
Connection, the first end of 2i-1 switching tubes is connected with the negative pole of 2i-1 electricity accumulating units, first end and the 2j-1 of the electric capacity of jth -1
The second end connection of switching tube, the second end of the electric capacity of jth -1 is connected with the first end of 2j-2 switching tubes, and j is little not less than 2
In N positive integer.
Firstly the need of explanation, the electricity accumulating unit described herein being sequentially connected in series refers to removing first electric power storage list
One end that one end and last electricity accumulating unit that member is connected with power cathode are connected with positive source, be arbitrarily connected two electric power storages
In unit, the positive pole of an electricity accumulating unit is connected with the negative pole of another electricity accumulating unit.
The operation principle of the present invention is the characteristic for being capable of discharge and recharge using inductance and electric capacity, passes through the conducting of controlling switch pipe
And shut-off, realize and the energy of the high electricity accumulating unit of voltage is turned into the low electricity accumulating unit of voltage, finally realize all electricity accumulating units
Balancing energy.
In addition, it is necessary to explanation, first switch pipe S1, the 3rd switching tube S3 until 2N-1 switching tubes simultaneously turn on or
Shut-off, second switch pipe S2, the 4th switching tube S4 are simultaneously turned on or turned off up to 2N switching tubes, 2i-1 switching tubes and 2i
Switching tube complementation conducting, this two groups of switches can be with fixed frequency or variable frequency, fixed duty cycle or adjustable duty cycle
Switch switching is carried out, is determined with specific reference to actual conditions.
As a kind of preferred embodiment, the circuit also includes：
N number of resistance, wherein, the i-th resistance is connected in series with the i-th inductance.
It is understood that resistance here may be considered the internal resistance of inductance, or when the internal resistance of inductance is very small
The resistance additionally connected, in order to limit the electric current of inductance, improves the security performance of voltage active equalization circuit.
For convenience of the understanding of the present invention, below so that N is 2 as an example, the voltage active equalization circuit provided the present invention
The course of work is described, and refer to Fig. 2, and a kind of structure for specific ground voltage active equalization circuit that Fig. 2 provides for the present invention is shown
It is intended to.Now, power-supply system includes 4 electricity accumulating units, and voltage active equalization circuit includes 2 inductance, 4 switching tubes and 1
Electric capacity.
Specifically, Fig. 3 and Fig. 4 are refer to, wherein, Fig. 3 is a kind of Working mould of the voltage active equalization circuit shown in Fig. 2
State schematic diagram, Fig. 4 is another operation mode schematic diagram of the voltage active equalization circuit shown in Fig. 2.
It is assumed here that the initial voltage of 4 electricity accumulating units is successively from high to low, i.e. V1>V2>V3>V4, wherein, V1 is
One electricity accumulating unit B1 voltage, V2 is second electricity accumulating unit B2 voltage, and V3 is the 3rd electricity accumulating unit B3 voltage, V4
For the 4th electricity accumulating unit B4 voltage.
On Fig. 3：
When first switch pipe S1 and the 3rd switching tube S3 is turned on and second switch pipe S2 and the 4th switching tube S4 is turned off, the
One electricity accumulating unit B1 is charged by first switch pipe S1 to the first inductor L1；3rd electricity accumulating unit B3 passes through the 3rd switch
Pipe S3 charges to the second inductor L2；First electricity accumulating unit B1 adds second electricity accumulating unit B2 to pass through first switch pipe S1 and
Three switching tube S3 charge to capacitor C1.
On Fig. 4：
When first switch pipe S1 and the 3rd switching tube S3 is turned off and second switch pipe S2 and the 4th switching tube S4 is turned on, the
One inductor L1 is discharged by second switch pipe S2 to second electricity accumulating unit B2；Second inductor L2 passes through the 4th switching tube S4
Discharged to the 4th electricity accumulating unit B4；Capacitor C1 is by second switch pipe S2 and the 4th switching tube S4 to the 3rd electricity accumulating unit
B3 adds the 4th electricity accumulating unit B4 electric discharge.
With the high frequency blocked operation of two kinds of working conditions of the voltage active equalization circuit shown in Fig. 3 and Fig. 4, Ke Yifa
It is existing：First electricity accumulating unit B1 charges to the first inductor L1 causes first electricity accumulating unit B1 voltage V1 to be gradually reduced, and
Second electricity accumulating unit B2 is charged by the first inductor L1 causes second electricity accumulating unit B2 voltage V2 to be gradually increasing, final two
Individual voltage V1 and V2 reaches unanimity；Similarly：3rd electricity accumulating unit B3 charges to the second inductor L2 causes first electric power storage
The voltage V3 of unit B 3 is gradually reduced, and the 4th electricity accumulating unit B4 is charged by the second inductor L2 and cause the 4th electricity accumulating unit
B4 voltage V4 is gradually increasing, and final two voltage V3 and V4 reach unanimity；Have again：First electricity accumulating unit B1 adds second storage
Electric unit B2 causes first electricity accumulating unit B1 and second electricity accumulating unit B2 total voltage V1+V2 gradually to capacitor C1 chargings
Decline, and the 3rd electricity accumulating unit B3 adds the 4th electricity accumulating unit B4 to be charged by capacitor C1 so that the 3rd electricity accumulating unit B3 adds
4th electricity accumulating unit B4 total voltage V3+V4 is gradually increasing, and final two voltage V1+V2 and V3+V4 reach unanimity.
Finally, when first electricity accumulating unit B1 voltage V1 and second electricity accumulating unit B2 voltage V2 are balanced, when the 3rd
Individual electricity accumulating unit B3 voltage V3 and the 4th electricity accumulating unit B4 voltage V4 is balanced, and two voltages V1+V2 and V3+V4 tend to
After consistent, voltage V1, V2, V3 and V4 of four electricity accumulating units all realize balanced in accumulating system.
To sum up, first electricity accumulating unit and second electricity accumulating unit in 4 electricity accumulating units are opened by the first inductance and 4
Voltage active equalization is realized in the complementary conducting for closing first switch pipe S1 and second switch pipe S2 in pipe；In 4 electricity accumulating units
Three electricity accumulating units and the 4th electricity accumulating unit are switched by the 3rd switching tube S3 in the second inductor and 4 switching tubes and the 4th
Voltage active equalization is realized in pipe S4 complementary conducting；First electricity accumulating unit in 4 electricity accumulating units adds second electricity accumulating unit
The 4th electricity accumulating unit is added to pass through first switch pipe S1 and the 3rd switching tube in electric capacity and 4 switching tubes with the 3rd electricity accumulating unit
Voltage active equalization is realized in S3 and second switch pipe S2 and the 4th switching tube S4 complementary conducting.
In addition, above-mentioned is that the course of work of voltage active equalization circuit when N is 2 is described, but its principle is to N
Voltage active equalization circuit during other numerical value is equally applicable, and the present invention will not be repeated here.
In order to examine a kind of voltage active equalization circuit of the application, test is provided below for the system architecture shown in Fig. 2
Circuit is to test its transmission ＆ distribution electrical characteristics.
Fig. 5 is refer to, Fig. 5 is the emulation testing oscillogram of the voltage active equalization circuit shown in Fig. 2, its emulation used
Test parameter is as follows：
4 10F super capacitor respectively as 4 electricity accumulating units B1, B2, B3 and B4, its initial voltage V1, V2, V3 and
V4 is respectively 2.7V, 2.6V, 2.5V and 2.4V；
First, second inductance L1=L2=50 μ H, and its internal resistance R1=R2=20m Ω；
Electric capacity C1=50 μ F；
Control signal is frequency 50kHz, the square-wave signal of dutycycle 0.5；
As shown in figure 5,4 electricity accumulating units B1, B2, B3 and B4 voltage V1, V2, V3 and V4 are with voltage active equalization electricity
The operation on road is gradually balanced and finally realizes the uniformity of four voltage.
As a kind of preferred embodiment, the circuit also includes：
N-1 resonant inductor, wherein, the resonant inductor of jth -1 is connected in series with the electric capacity of jth -1.
Specifically, resonant inductor here act as electric capacity carry out discharge and recharge during reduce instantaneous large-current
Electric capacity, power supply and switching tube etc. are impacted, the security performance of voltage active equalization circuit is improved.
As a kind of preferred embodiment, switching tube is NMOS, wherein, NMOS source electrode as switching tube first end,
NMOS drain electrode as switching tube the second end.
As a kind of preferred embodiment, switching tube is PMOS, wherein, PMOS drain electrode as switching tube first end,
PMOS source electrode as switching tube the second end.
The application is not particularly limited for the particular type of switching tube, is determined according to actual conditions.
As a kind of preferred embodiment, electricity accumulating unit is single battery cell or connected by multiple single battery cells
The battery pack of composition or single super capacitor monomer or by the monomer series-connected super capacitor of multiple single super capacitors
Group.
The present invention is not particularly limited for the composition of electricity accumulating unit, is determined according to actual conditions.
The invention provides a kind of voltage active equalization circuit, applied to accumulating system, accumulating system includes 2N successively
The electricity accumulating unit of series connection, N is positive integer, and the circuit includes N number of inductance, 2N switching tube and N-1 electric capacity, wherein, first opens
Guan Guan, the 3rd switching tube are until 2N-1 switching tubes are simultaneously turned on or turned off, and second switch pipe, the 4th switching tube are until 2N is opened
Close pipe to simultaneously turn on or turn off, 2i-1 switching tubes and the complementation of 2i switching tubes are turned on, and i is no more than N positive integer；I-th electricity
The first end of sense is connected with the positive pole of 2i-1 electricity accumulating units, the second end of the i-th inductance respectively with 2i-1 switching tubes second
The first end connection of end and 2i switching tubes, the second end of 2i switching tubes is connected with the positive pole of 2i electricity accumulating units, 2i-1
The first end of switching tube is connected with the negative pole of 2i-1 electricity accumulating units, and the of the first end of the electric capacity of jth -1 and 2j-1 switching tubes
Two ends are connected, and the second end of the electric capacity of jth -1 is connected with the first end of 2j-2 switching tubes, and j is just whole for the no more than N's not less than 2
Number.
The present invention is capable of the characteristic of discharge and recharge using inductance and electric capacity, by the turn-on and turn-off of controlling switch pipe, realizes
The energy of the high electricity accumulating unit of voltage is turned into the low electricity accumulating unit of voltage, the balancing energy of all electricity accumulating units is finally realized,
Namely the voltage uniformity of all electricity accumulating units is realized, the switching device that the present invention is used is few, and simple in construction, cost is low, control
The algorithm of switching tube turn-on and turn-off is also very simple.
In order to solve the above technical problems, present invention also offers a kind of accumulating system, including the 2N electric power storages being sequentially connected in series
Unit, N is positive integer, it is characterised in that also including above-mentioned voltage active equalization circuit.
The introduction of voltage active equalization circuit in the accumulating system provided for the present invention refer to above-described embodiment, this
Invention will not be repeated here.
It should be noted that in this manual, such as first and second or the like relational terms are used merely to one
Individual entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include those
Key element, but also other key elements including being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in the process including the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for 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 present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
1. a kind of voltage active equalization circuit, applied to accumulating system, the accumulating system includes the 2N electric power storages being sequentially connected in series
Unit, N is positive integer, it is characterised in that the circuit includes N number of inductance, 2N switching tube and N-1 electric capacity, wherein, first opens
Guan Guan, the 3rd switching tube are until 2N-1 switching tubes are simultaneously turned on or turned off, and second switch pipe, the 4th switching tube are until 2N is opened
Close pipe to simultaneously turn on or turn off, 2i-1 switching tubes and the complementation of 2i switching tubes are turned on, and i is no more than N positive integer；
The first end of i-th inductance is connected with the positive pole of 2i-1 electricity accumulating units, and the second end of the i-th inductance is switched with 2i-1 respectively
Second end of pipe and the first end connection of 2i switching tubes, the second end of the 2i switching tubes and the positive pole of 2i electricity accumulating units
Connection, the first end of 2i-1 switching tubes is connected with the negative pole of 2i-1 electricity accumulating units, first end and the 2j-1 of the electric capacity of jth -1
The second end connection of switching tube, the second end of the electric capacity of jth -1 is connected with the first end of 2j-2 switching tubes, and j is little not less than 2
In N positive integer.
2. voltage active equalization circuit as claimed in claim 1, it is characterised in that the circuit also includes：
N number of resistance, wherein, the i-th resistance is connected in series with the i-th inductance.
3. voltage active equalization circuit as claimed in claim 1, it is characterised in that the circuit also includes：
N-1 resonant inductor, wherein, the resonant inductor of jth -1 is connected in series with the electric capacity of jth -1.
4. voltage active equalization circuit as claimed in claim 1, it is characterised in that the switching tube is NMOS, wherein, NMOS
Source electrode as the switching tube first end, NMOS drain electrode as the switching tube the second end.
5. voltage active equalization circuit as claimed in claim 1, it is characterised in that the switching tube is PMOS, wherein, PMOS
Drain electrode as the switching tube first end, PMOS source electrode as the switching tube the second end.
6. the voltage active equalization circuit as described in claim any one of 1-5, it is characterised in that the electricity accumulating unit is single
Battery cell or by multiple single battery cells battery pack in series or single super capacitor monomer or by multiple
The monomer series-connected super capacitor group of single super capacitor.
7. a kind of accumulating system, including the 2N electricity accumulating units being sequentially connected in series, N is positive integer, it is characterised in that also including such as weighing
Profit requires the voltage active equalization circuit described in any one of 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710338342.8A CN107104482A (en) | 2017-05-15 | 2017-05-15 | A kind of voltage active equalization circuit and accumulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710338342.8A CN107104482A (en) | 2017-05-15 | 2017-05-15 | A kind of voltage active equalization circuit and accumulating system |
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| CN201710338342.8A Pending CN107104482A (en) | 2017-05-15 | 2017-05-15 | A kind of voltage active equalization circuit and accumulating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108964179A (en) * | 2018-07-02 | 2018-12-07 | 湖南红太阳新能源科技有限公司 | Battery equalization system and method |
| CN111564886A (en) * | 2020-06-01 | 2020-08-21 | 李砚泉 | Equalization device based on capacitance network, cascading equalization battery pack and control method |
| CN114530637A (en) * | 2022-02-24 | 2022-05-24 | 广州菲利斯太阳能科技有限公司 | Voltage balancing device and control method for series lithium battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108964179A (en) * | 2018-07-02 | 2018-12-07 | 湖南红太阳新能源科技有限公司 | Battery equalization system and method |
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| CN114530637A (en) * | 2022-02-24 | 2022-05-24 | 广州菲利斯太阳能科技有限公司 | Voltage balancing device and control method for series lithium battery pack |
| CN114530637B (en) * | 2022-02-24 | 2023-01-13 | 广州菲利斯太阳能科技有限公司 | Voltage balancing device and control method for series lithium battery pack |
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Application publication date: 20170829 |