CN106972589A - A kind of voltage of serially-connected cells active equalization circuit and accumulating system - Google Patents

A kind of voltage of serially-connected cells active equalization circuit and accumulating system Download PDF

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Publication number
CN106972589A
CN106972589A CN201710338303.8A CN201710338303A CN106972589A CN 106972589 A CN106972589 A CN 106972589A CN 201710338303 A CN201710338303 A CN 201710338303A CN 106972589 A CN106972589 A CN 106972589A
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CN
China
Prior art keywords
voltage
electricity accumulating
switching tube
serially
inductance
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CN201710338303.8A
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Chinese (zh)
Inventor
叶远茂
冯程锋
葛泳
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Guangdong University of Technology
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Guangdong University of Technology
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Priority to CN201710338303.8A priority Critical patent/CN106972589A/en
Publication of CN106972589A publication Critical patent/CN106972589A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014Circuits for equalisation of charge between batteries
    • H02J7/0016Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits

Abstract

The invention discloses a kind of voltage of serially-connected cells active equalization circuit, applied to accumulating system, 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, second end of 1 inductance of N also corresponds and is connected with the first end of 1 electric capacity of N respectively, the second end connection of 1 electric capacity of N, the second end of the second end of a remaining inductance directly with 1 electric capacity of N is connected.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.The accumulating system that the present invention is provided also has as above beneficial effect.

Description

A kind of voltage of serially-connected cells active equalization circuit and accumulating system
Technical field
The present invention relates to electric voltage equalization technical field, more particularly to a kind of voltage of serially-connected cells active equalization circuit.
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 of serially-connected cells active equalization system of sub- power conversion technology is also suggested in succession, such as is become using Buck-Boost power Change circuit and switching capacity power circuit, but the active based on Buck-Boost power conversion circuits and switching capacity power circuit In equalizing system, the switching device that this kind of system is used is more, complicated, and cost is high, and generally also needs to coordinate complexity 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 of serially-connected cells active equalization circuit, the switching device used is few, structure Simply, cost is low, and the algorithm of controlling switch pipe turn-on and turn-off is also very simple;Include it is a further object of the present invention to provide one kind The accumulating system of above-mentioned voltage of serially-connected cells active equalization circuit.
In order to solve the above technical problems, the invention provides a kind of voltage of serially-connected cells active equalization circuit, applied to storage Electric system, the accumulating system includes the 2N electricity accumulating units being sequentially connected in series, and N is positive integer, and the circuit includes N number of inductance, 2N Individual 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 2i switching tubes are mutual Conducting is mended, 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 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, and the second end of N-1 inductance is also divided It Yi Yiduiying be connected with the first end of N-1 electric capacity, the second end connection of N-1 electric capacity, the second of a remaining inductance The second end directly with N-1 electric capacity is held to be connected.
Preferably, the circuit also includes:
Between the common point for the second end connection for being arranged on the second end of a remaining inductance and N-1 electric capacity Electric capacity.
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 number of resonant inductor, wherein, the i-th resonant inductor is connected in series with the i-th electric capacity.
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 of serially-connected cells active equalization circuit as described above.
The invention provides a kind of voltage of serially-connected cells active equalization circuit, applied to accumulating system, accumulating system includes The individual electricity accumulating units being sequentially connected in series of 2N, N is positive integer, and the circuit includes N number of inductance, 2N switching tube and N-1 electric capacity, its In, 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 Until 2N switching tubes simultaneously turn on or turn off, 2i-1 switching tubes are turned on the complementation of 2i switching tubes, i for no more than N just 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 opened with 2i-1 respectively The second end of pipe and the first end connection of 2i switching tubes are closed, the second end of 2i switching tubes connects with the positive pole of 2i electricity accumulating units Connect, the first end of 2i-1 switching tubes is connected with the negative pole of 2i-1 electricity accumulating units, the second end of N-1 inductance is also distinguished one by one Correspondence is connected with the first end of N-1 electric capacity, and the second end connection of N-1 electric capacity, the second end of a remaining inductance is direct It is connected with the second end of N-1 electric capacity.
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 of serially-connected cells active equalization circuit that Fig. 1 provides for the present invention;
Fig. 2 is a kind of structural representation of specifically voltage of serially-connected cells active equalization circuit of the present invention;
Fig. 3 is a kind of operation mode schematic diagram of the voltage of serially-connected cells active equalization circuit shown in Fig. 2;
Fig. 4 is another operation mode schematic diagram of the voltage of serially-connected cells active equalization circuit shown in Fig. 2;
The structural representation for another voltage of serially-connected cells active equalization circuit that Fig. 5 provides for the present invention;
Fig. 6 is the structural representation of another specifically voltage of serially-connected cells active equalization circuit of the present invention;
Fig. 7 is a kind of operation mode schematic diagram of the voltage of serially-connected cells active equalization circuit shown in Fig. 6;
Fig. 8 is another operation mode schematic diagram of the voltage of serially-connected cells active equalization circuit shown in Fig. 6.
Embodiment
The core of the present invention is to provide a kind of voltage of serially-connected cells active equalization circuit, and the switching device used is few, structure Simply, cost is low, and the algorithm of controlling switch pipe turn-on and turn-off is also very simple;Another core of the present invention, which is to provide one kind, to be included The accumulating system of above-mentioned voltage of serially-connected cells 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.
It refer to Fig. 1, a kind of structural representation for voltage of serially-connected cells active equalization circuit that Fig. 1 provides for the present invention, Applied to accumulating system, accumulating system includes the 2N electricity accumulating units being sequentially connected in series, and N is positive integer, and the circuit includes N number of electricity Sense, 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 led simultaneously It is logical or turn off, second switch pipe S2, the 4th switching tube S4 until 2N switching tubes are simultaneously turned on or turned off, 2i-1 switching tubes with 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, and the second end of N-1 inductance also distinguishes one One correspondence is connected with the first end of N-1 electric capacity, and the second end connection of N-1 electric capacity, the second end of a remaining inductance is straight Connect and be connected with the second end of N-1 electric capacity.
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.
It should also be noted that, N-1 electric capacity here refers to any N-1 electric capacity in N number of electric capacity, the application figure What is given in 1 is one example of which, and N-1 electric capacity here refers to 2- n-th electric capacity.
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 peace of voltage of serially-connected cells active equalization circuit Full performance.
For convenience of the understanding of the present invention, below so that N is 3 as an example, refer to Fig. 2, Fig. 2 for the present invention it is a kind of specifically The structural representation of voltage of serially-connected cells active equalization circuit, the voltage of serially-connected cells active equalization circuit provided the present invention The course of work is described, now, and power-supply system includes 6 electricity accumulating units, and voltage of serially-connected cells active equalization circuit includes 3 electricity Sense, 6 switching tubes and, 2 electric capacity.
Specifically, Fig. 3 and Fig. 4 are refer to, wherein, Fig. 3 is one of the voltage of serially-connected cells active equalization circuit shown in Fig. 2 Operation mode schematic diagram is planted, Fig. 4 is another operation mode signal of the voltage of serially-connected cells active equalization circuit shown in Fig. 2 Figure.Fig. 2 course of work is described with reference to Fig. 3 and Fig. 4:
It is assumed here that the initial voltage of 6 electricity accumulating units is successively from high to low, i.e. V1>V2>V3>V4>V5>V6, wherein, V1 is first electricity accumulating unit B1 voltage, and V2 is second electricity accumulating unit B2 voltage, and V3 is the 3rd electricity accumulating unit B3 Voltage, V4 is the 4th electricity accumulating unit B4 voltage, and V5 is the 5th electricity accumulating unit B5 voltage, and V6 is the 6th electricity accumulating unit B6 voltage.
On Fig. 3:
When first switch pipe S1, the 3rd switching tube S3 and the 5th switching tube S5 are turned on and second switch pipe S2, the 4th switch During pipe S4 and the 6th switching tube S6 shut-offs, first electricity accumulating unit B1 is charged by first switch pipe S1 to the first inductor L1; 3rd electricity accumulating unit B3 is charged by the 3rd switching tube S3 to the second inductor L2;5th electricity accumulating unit B5 is opened by the 5th Pipe S5 is closed to charge to the 3rd inductor L3;Electricity accumulating unit group B1+B2 electric current passes through first switch pipe S1 and the 3rd switching tube S3 Flow into the second capacitor C2;Electricity accumulating unit group B3+B4 electric current flows into electric capacity by the 3rd switching tube S3 and the 5th switching tube S5 Device group C2+C3;Electricity accumulating unit group B1+B2+B3+B4 electric current flows into the 3rd electricity by first switch pipe S1 and the 5th switching tube S5 Container C3.
On Fig. 4:
When first switch pipe S1, the 3rd switching tube S3 and the 5th switching tube S5 are turned off and second switch pipe S2, the 4th switch When pipe S4 and the 6th switching tube S6 are opened, the first inductor L1 is discharged by second switch pipe S2 to second electricity accumulating unit B2; Second inductor L2 is discharged by the 4th switching tube S4 to the 4th electricity accumulating unit B4;3rd inductor L3 passes through the 6th switching tube S6 discharges to the 6th electricity accumulating unit B6;Second capacitor C2 electric current is flowed into by second switch pipe S2 and the 4th switching tube S4 Electricity accumulating unit group B3+B4;Capacitor bank C2+C3 electric current flows into electricity accumulating unit by the 4th switching tube S4 and the 6th switching tube S6 Group B5+B6;3rd capacitor C3 electric current flows into electricity accumulating unit group B3+B4+ by second switch pipe S2 and the 6th switching tube S6 B5+B6。
With the high frequency blocked operation of two kinds of working conditions as shown in Figure 3 and Figure 4, it can be found that:First electric power storage list First B1 and second electricity accumulating unit B2 can be pressed by the first inductor L1;3rd electricity accumulating unit B3 and the 4th electric power storage list First B4 can be pressed by the second inductor L2;5th electricity accumulating unit B5 and the 6th electricity accumulating unit B6 passes through the 3rd inductor L3 can be pressed;Electricity accumulating unit group B1+B2 and electricity accumulating unit group B3+B4 can be pressed by the second capacitor C2;Electricity accumulating unit Group B3+B4 and electricity accumulating unit group B5+B6 can be pressed by capacitor bank C2+C3;Especially, electricity accumulating unit group
B1+B2+B3+B4 and electricity accumulating unit group B3+B4+B5+B6 can be pressed by the 3rd capacitor bank C3, due to B3+ B4 is electricity accumulating unit group B1+B2+B3+B4 and electricity accumulating unit group B3+B4+B5+B6 common portion, so being electricity accumulating unit in fact Group B1+B2 and electricity accumulating unit group B5+B6 can be pressed by the 3rd capacitor C3.Summary is described, and the present embodiment can be finally real Voltage V1, V2, V3, V4, V5 and V6 of existing six electricity accumulating units all realize balanced.
As a kind of preferred embodiment, the circuit also includes:
Electricity between the common point for the second end connection for being arranged on the second end of a remaining inductance and N-1 electric capacity Hold.
Specifically, Fig. 5, the knot for another voltage of serially-connected cells active equalization circuit that Fig. 5 provides for the present invention be refer to Structure schematic diagram.
In the application, if using N number of electric capacity, it finally can also realize the effect of electricity accumulating unit balancing energy, the application Which kind of, for not being particularly limited from mode specifically, determined according to actual conditions.
For convenience of the understanding of the present invention, below so that N is 3 as an example, the voltage of serially-connected cells provided the present invention is actively equal The course of work of weighing apparatus circuit is described, and refer to Fig. 6, another specifically voltage of serially-connected cells master that Fig. 6 provides for the present invention The structural representation of dynamic equalizing circuit.Now, power-supply system includes 6 electricity accumulating units, voltage of serially-connected cells active equalization circuit Including 3 inductance, 6 switching tubes and 3 electric capacity.
Specifically, Fig. 7 and Fig. 8 are refer to, wherein, Fig. 7 is one of the voltage of serially-connected cells active equalization circuit shown in Fig. 6 Operation mode schematic diagram is planted, Fig. 8 is another operation mode signal of the voltage of serially-connected cells active equalization circuit shown in Fig. 6 Figure.
It is assumed here that the initial voltage of 6 electricity accumulating units is successively from high to low, i.e.,
V1>V2>V3>V4>V5>V6, wherein, V1 is first electricity accumulating unit B1 voltage, and V2 is second electricity accumulating unit B2 voltage, V3 is the 3rd electricity accumulating unit B3 voltage, and V4 is the 4th electricity accumulating unit B4 voltage, and V5 is the 5th electric power storage The voltage of unit B 5, V6 is the 6th electricity accumulating unit B6 voltage.
On Fig. 7:
When first switch pipe S1, the 3rd switching tube S3 and the 5th switching tube S5 are turned on and second switch pipe S2, the 4th switch During pipe S4 and the 6th switching tube S6 shut-offs, first electricity accumulating unit B1 is charged by first switch pipe S1 to the first inductor L1; 3rd electricity accumulating unit B3 is charged by the 3rd switching tube S3 to the second inductor L2;5th electricity accumulating unit B5 is opened by the 5th Pipe S5 is closed to charge to the 3rd inductor L3;Electricity accumulating unit group B1+B2 electric current passes through first switch pipe S1 and the 3rd switching tube S3 Flow into capacitor bank C1+C2;Electricity accumulating unit group B3+B4 electric current flows into electric capacity by the 3rd switching tube S3 and the 5th switching tube S5 Device group C2+C3;Electricity accumulating unit group B1+B2+B3+B4 electric current flows into capacitor by first switch pipe S1 and the 5th switching tube S5 Group C1+C3.
On Fig. 8:
When first switch pipe S1, the 3rd switching tube S3 and the 5th switching tube S5 are turned off and second switch pipe S2, the 4th switch When pipe S4 and the 6th switching tube S6 are opened, the first inductor L1 is discharged by second switch pipe S2 to second electricity accumulating unit B2; Second inductor L2 is discharged by the 4th switching tube S4 to the 4th electricity accumulating unit B4;3rd inductor L3 passes through the 6th switching tube S6 discharges to the 6th electricity accumulating unit B6;Capacitor bank C1+C2 electric current is flowed by second switch pipe S2 and the 4th switching tube S4 Enter electricity accumulating unit group B3+B4;Capacitor bank C2+C3 electric current flows into electric power storage list by the 4th switching tube S4 and the 6th switching tube S6 Tuple B5+B6;Capacitor bank C1+C3 electric current flows into electricity accumulating unit group B3+ by second switch pipe S2 and the 6th switching tube S6 B4+B5+B6。
With the high frequency alternating of two kinds of working conditions of voltage of serially-connected cells active equalization circuit as shown in Figure 7 and Figure 8 Operation, it can be found that:First electricity accumulating unit B1 and second electricity accumulating unit B2 can be pressed by the first inductor L1;3rd Individual electricity accumulating unit B3 and the 4th electricity accumulating unit B4 can be pressed by the second inductor L2;5th electricity accumulating unit B5 and the 6th Individual electricity accumulating unit B6 can be pressed by the 3rd inductor L3;Electricity accumulating unit group B1+B2 and electricity accumulating unit group B3+B4 pass through electric capacity Device group C1+C2 can be pressed;Electricity accumulating unit group B3+B4 and electricity accumulating unit group B5+B6 can be pressed by capacitor bank C2+C3; Especially, electricity accumulating unit group B1+B2+B3+B4 and electricity accumulating unit group B3+B4+B5+B6 can be pressed by capacitor bank C1+C3, Because B3+B4 is electricity accumulating unit group B1+B2+B3+B4 and electricity accumulating unit group B3+B4+B5+B6 common portion, so being in fact Electricity accumulating unit group B1+B2 and electricity accumulating unit group B5+B6 can be pressed by capacitor bank C1+C3.Summary is described, and the present embodiment can Finally to realize that it is balanced that voltage V1, V2, V3, V4, V5 and V6 of six electricity accumulating units are all realized.
In addition, above-mentioned is that the course of work of voltage of serially-connected cells active equalization circuit when N is 3 is described, but its Principle is equally applicable to voltage of serially-connected cells active equalization circuit when N is other numerical value, and the present invention will not be repeated here.
As a kind of preferred embodiment, the circuit also includes:
N number of resonant inductor, wherein, the i-th resonant inductor is connected in series with the i-th electric capacity.
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 of serially-connected cells 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 of serially-connected cells active equalization circuit, applied to accumulating system, accumulating system includes The individual electricity accumulating units being sequentially connected in series of 2N, N is positive integer, and the circuit includes N number of inductance, 2N switching tube and N-1 electric capacity, its In, 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 Until 2N switching tubes simultaneously turn on or turn off, 2i-1 switching tubes are turned on the complementation of 2i switching tubes, i for no more than N just 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 opened with 2i-1 respectively The second end of pipe and the first end connection of 2i switching tubes are closed, the second end of 2i switching tubes connects with the positive pole of 2i electricity accumulating units Connect, the first end of 2i-1 switching tubes is connected with the negative pole of 2i-1 electricity accumulating units, the second end of N-1 inductance is also distinguished one by one Correspondence is connected with the first end of N-1 electric capacity, and the second end connection of N-1 electric capacity, the second end of a remaining inductance is direct It is connected with the second end of N-1 electric capacity.
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, in addition to voltage of serially-connected cells active equalization circuit described above.
The introduction of voltage of serially-connected cells active equalization circuit in the accumulating system provided for the present invention refer to above-mentioned Embodiment, the present 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 (8)

1. a kind of voltage of serially-connected cells active equalization circuit, applied to accumulating system, the accumulating system includes 2N and gone here and there successively The electricity accumulating unit of connection, N is positive integer, it is characterised in that the circuit includes N number of inductance, 2N switching tube and N-1 electric capacity, its In, 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 Until 2N switching tubes simultaneously turn on or turn off, 2i-1 switching tubes are turned on the complementation of 2i switching tubes, i for no more than N just 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, and the second end of N-1 inductance also distinguishes one One correspondence is connected with the first end of N-1 electric capacity, and the second end connection of N-1 electric capacity, the second end of a remaining inductance is straight Connect and be connected with the second end of N-1 electric capacity.
2. voltage of serially-connected cells active equalization circuit as claimed in claim 1, it is characterised in that the circuit also includes:
Electricity between the common point for the second end connection for being arranged on the second end of a remaining inductance and N-1 electric capacity Hold.
3. voltage of serially-connected cells 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.
4. voltage of serially-connected cells active equalization circuit as claimed in claim 2, it is characterised in that the circuit also includes:
N number of resonant inductor, wherein, the i-th resonant inductor is connected in series with the i-th electric capacity.
5. voltage of serially-connected cells 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.
6. voltage of serially-connected cells 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.
7. the voltage of serially-connected cells active equalization circuit as described in claim any one of 1-6, it is characterised in that the electric power storage list Member for single battery cell or by multiple single battery cells battery pack in series or single super capacitor monomer or Person is by the monomer series-connected super capacitor group of multiple single super capacitors.
8. 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 of serially-connected cells active equalization circuit described in any one of 1-7.
CN201710338303.8A 2017-05-15 2017-05-15 A kind of voltage of serially-connected cells active equalization circuit and accumulating system Pending CN106972589A (en)

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