CN105449772A - Voltage balancing device, system and method for swing flying capacitor - Google Patents
Voltage balancing device, system and method for swing flying capacitor Download PDFInfo
- Publication number
- CN105449772A CN105449772A CN201511004901.9A CN201511004901A CN105449772A CN 105449772 A CN105449772 A CN 105449772A CN 201511004901 A CN201511004901 A CN 201511004901A CN 105449772 A CN105449772 A CN 105449772A
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- China
- Prior art keywords
- double
- voltage balancing
- throw switch
- balancing device
- moving contact
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a voltage balancing device, system and method for a swing flying capacitor. The device comprises a flying capacitor, a current limiting impeder, a double-pole and double-throw switch, a first energy storage unit, a second energy storage unit and a control unit, wherein one end of the flying capacitor is connected with the current limiting impeder in series; two fixed contacts of the double-pole and double-throw switch are connected with the other end of the flying capacitor and the other end of the current limiting impeder respectively; a first movable contact and a second movable contact of the double-pole and double-throw switch are connected with the first energy storage unit and the second energy storage unit in series respectively; and the control unit is connected with the double-pole and double-throw switch and is used for controlling circular opening or closing of the fixed contacts, the first movable contact and the second movable contact of the double-pole and double-throw switch. Static and dynamic voltage balance of an energy storage element group is achieved; a control circuit is simple; a detection circuit is not needed; power consumption and the cost are low, voltage balancing effect is good.
Description
Technical field
The embodiment of the present invention relates to power electronic element field, particularly relates to a kind of voltage balancing device, system and method for waving flying capacitance.
Background technology
Along with the development of new forms of energy and active distribution network, energy storage technology more and more becomes current hot issue, and battery and ultracapacitor are as main energy-storage travelling wave tube, and its application is more and more extensive, and capacity is increasing.Because battery or ultracapacitor are generally with series-parallel system composition battery pack or bank of super capacitors, and battery cell or ultracapacitor monomer are due to the reason of production technology, parameters decentralization is larger, so that when connecting, monomer voltage is unbalanced, overall stored energy capacitance can be affected, cause the damage of cell or Capacitor banks, affect the life-span.
Voltage balancing method conventional at present can be divided into two classes, and a class is device energy consuming methods, and as switch resistance, voltage-stabiliser tube etc., the shortcoming of this method is that power consumption is serious; Another kind of is energy transfer method, and the control of these class methods and testing circuit complexity, need a large amount of components and parts, reliability is low, and cost is higher.
Flying capacitance method is a kind of energy transfer equalizer circuit, but the measure loop of current flying capacitance method and control algolithm more complicated, electric voltage equalization speed is slow.
Summary of the invention
The embodiment of the present invention provides a kind of voltage balancing method and the device that wave flying capacitance, to overcome above-mentioned technical problem.
The voltage balancing device waving flying capacitance of the present invention, comprising:
Flying capacitance, current-limiting impedance, double-point double-throw switch, the first power storaging unit, the second power storaging unit and control unit;
Connect with described current-limiting impedance in described flying capacitance one end, described double-point double-throw switch two fixed contacts are connected with the other end of described flying capacitance, the other end of described current-limiting impedance respectively and join;
First moving contact and second moving contact of described double-point double-throw switch are connected described first power storaging unit, described second power storaging unit respectively;
Described control unit is connected with described double-point double-throw switch, and the circulation for the fixed contact and described first moving contact and the second moving contact that control described double-point double-throw switch is opened or closed.
The present invention also provides a kind of electric voltage equalization system of waving flying capacitance, comprises multiple device composition multi-stage equalizing unit according to claim 1;
First order balanced unit comprises 2
nindividual first order voltage balancing device, first, second power storaging unit of described first order voltage balancing device is respectively two voltage balancing devices;
Second level storage element comprises 2
n/ 2 second level voltage balancing devices, first, second power storaging unit of described second level voltage balancing device is respectively first order voltage balancing device, by that analogy;
N-th grade of storage element comprises 1 described n-th step voltage balancer, and first, second power storaging unit of described n-th step voltage balancer is respectively the (n-1)th step voltage balancer.
The present invention also provides a kind of voltage balancing method waving flying capacitance, comprising:
The circulation of moving contact and fixed contact that control unit controls the first order voltage balancing device of the 1st grade of storage element is opened or is closed;
Described control unit controls the moving contact of described second level voltage balancing device of the 2nd grade of storage element and the circulation of fixed contact is opened or close, by that analogy;
Described control unit controls the described moving contact of the n-th step voltage balancer of n-th grade of memory cell and the circulation of fixed contact is opened or close.
Present invention achieves the Static and dynamic electric voltage equalization of electrical power storage element group, control circuit is simple, does not need testing circuit, low in energy consumption, electric voltage equalization is effective, and cost is low, solves the problem that current electrical power storage element group voltages equalizing circuit is complicated, power consumption is large, cost is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the voltage balancing device structural representation that the present invention waves flying capacitance;
Fig. 2 is the electric voltage equalization system configuration schematic diagram that the present invention waves flying capacitance;
Fig. 3 is the flow chart that the present invention waves the voltage balancing method of flying capacitance.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the voltage balancing device structural representation that the present invention waves flying capacitance, and as shown in Figure 1, the device of the present embodiment can comprise:
Flying capacitance 101, current-limiting impedance 102, double-point double-throw switch 103, first power storaging unit 104, second power storaging unit 105 and control unit 106;
Connect with described current-limiting impedance in described flying capacitance one end, described double-point double-throw switch two fixed contacts are connected with the other end of described flying capacitance, the other end of described current-limiting impedance respectively and join;
First moving contact and second moving contact of described double-point double-throw switch are connected described first power storaging unit, described second power storaging unit respectively;
Described control unit is connected with described double-point double-throw switch, and the circulation for the fixed contact and described first moving contact and the second moving contact that control described double-point double-throw switch is opened or closed.
Specifically, control unit controls 2 seconds described double-point double-throw switch action cycles, makes the first conducting of described flying capacitance 1 second power storaging unit, then conducting 1 second power storaging unit, to realize the two electric voltage equalization.
In the present embodiment, flying capacitance capacity is 0.01F, and current-limiting impedance is 2mH inductance, and double-point double-throw switch is direct current 24V dpdt double-pole double-throw (DPDT) type relay, and first, second part is the ultracapacitor of nominal value 2.7V/1F.
Fig. 2 is the electric voltage equalization system configuration schematic diagram that the present invention waves flying capacitance, and as shown in Figure 2, the present embodiment system comprises the device shown in multiple Fig. 1:
First order balanced unit comprises 2
nindividual first order voltage balancing device 201, the first power storaging unit 202, second power storaging unit 203 of described first order voltage balancing device is respectively two voltage balancing devices;
Second level storage element comprises 2
n/ 2 second level voltage balancing devices, first, second power storaging unit of described second level voltage balancing device is respectively first order voltage balancing device, by that analogy;
N-th grade of storage element comprises 1 described n-th step voltage balancer, and first, second power storaging unit of described n-th step voltage balancer is respectively the (n-1)th step voltage balancer.
Specifically, the multiple voltage balancing device of system coordination that the present embodiment multi-stage equalizing unit is formed, can voltage balancing device in association's system in each balanced unit, thus portfolio effect is more accurate.
Fig. 3 is the flow chart that the present invention waves the voltage balancing method of flying capacitance, and as shown in Figure 3, the present embodiment method, comprising:
The circulation of moving contact and fixed contact that step 101, control unit control the first order voltage balancing device of the 1st grade of storage element is opened or is closed;
Step 102, control unit control the moving contact of second level voltage balancing device of the 2nd storage element and the circulation of fixed contact is opened or close, by that analogy;
Step 103, described control unit control the described moving contact of the n-th step voltage balancer of n-th grade of memory cell and the circulation of fixed contact is opened or close.
The present invention uses flying capacitance, current-limiting impedance and double-point double-throw switch to form and waves flying capacitance, for the electric voltage equalization of two power storaging units.The voltage balancing device of relative said function, multiple power storaging unit is divided into many groups by the present invention, multistage, and the power storaging unit quantity making a flying capacitance be responsible for electric energy equilibrium reduces greatly, thus can significantly improve electric voltage equalization speed.Circuit structure of the present invention is simple, need not detect the voltage of power storaging unit, does not need complicated control algolithm, and electric voltage equalization speed is fast, and reliability is high, and cost is low, solves the problem of current electrical power storage element group voltages equilibrium.Enforcement of the present invention can improve the stored energy capacitance of electrical power storage element, increases the life-span of electrical power storage element, reduces the cost of electrical power storage element group voltages equilibrium, improves the speed of electric voltage equalization.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (3)
1. wave a voltage balancing device for flying capacitance, it is characterized in that, comprising:
Flying capacitance, current-limiting impedance, double-point double-throw switch, the first power storaging unit, the second power storaging unit and control unit;
Connect with described current-limiting impedance in described flying capacitance one end, described double-point double-throw switch two fixed contacts are connected with the other end of described flying capacitance, the other end of described current-limiting impedance respectively and join;
First moving contact and second moving contact of described double-point double-throw switch are connected described first power storaging unit, described second power storaging unit respectively;
Described control unit is connected with described double-point double-throw switch, and the circulation for the fixed contact and described first moving contact and the second moving contact that control described double-point double-throw switch is opened or closed.
2. wave an electric voltage equalization system for flying capacitance, it is characterized in that, comprise multiple device composition multi-stage equalizing unit according to claim 1;
First order balanced unit comprises 2
nindividual first order voltage balancing device, first, second power storaging unit of described first order voltage balancing device is respectively two voltage balancing devices;
Second level storage element comprises 2
n/ 2 second level voltage balancing devices, first, second power storaging unit of described second level voltage balancing device is respectively first order voltage balancing device, by that analogy;
N-th grade of storage element comprises 1 described n-th step voltage balancer, and first, second power storaging unit of described n-th step voltage balancer is respectively the (n-1)th step voltage balancer.
3. the voltage balancing method waving flying capacitance of system according to claim 4, is characterized in that, comprising:
The circulation of moving contact and fixed contact that control unit controls the first order voltage balancing device of the 1st grade of storage element is opened or is closed;
Described control unit controls the moving contact of described second level voltage balancing device of the 2nd grade of storage element and the circulation of fixed contact is opened or close, by that analogy;
Described control unit controls the described moving contact of the n-th step voltage balancer of n-th grade of memory cell and the circulation of fixed contact is opened or close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004901.9A CN105449772B (en) | 2015-12-28 | 2015-12-28 | Wave voltage balancing device, the system and method for flying capacitance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004901.9A CN105449772B (en) | 2015-12-28 | 2015-12-28 | Wave voltage balancing device, the system and method for flying capacitance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105449772A true CN105449772A (en) | 2016-03-30 |
| CN105449772B CN105449772B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511004901.9A Expired - Fee Related CN105449772B (en) | 2015-12-28 | 2015-12-28 | Wave voltage balancing device, the system and method for flying capacitance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475369A (en) * | 2016-07-15 | 2019-03-15 | I.C.医疗股份有限公司 | Super electrosurgery blade and super electric surgical pen |
| CN110203106A (en) * | 2019-05-10 | 2019-09-06 | 杭州电子科技大学 | A kind of active mixed equilibrium circuit applied to power battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027929A (en) * | 2005-07-13 | 2007-02-01 | Nippon Antenna Co Ltd | Switching circuit and attenuator |
| CN202503323U (en) * | 2012-02-07 | 2012-10-24 | 上海产联电气科技有限公司 | Charging and discharging voltage-equalizing device for super capacitor group |
| CN103368268A (en) * | 2012-03-27 | 2013-10-23 | 无锡富洪科技有限公司 | Active voltage balancing system and active voltage balancing method for serial energy storage element group |
-
2015
- 2015-12-28 CN CN201511004901.9A patent/CN105449772B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027929A (en) * | 2005-07-13 | 2007-02-01 | Nippon Antenna Co Ltd | Switching circuit and attenuator |
| CN202503323U (en) * | 2012-02-07 | 2012-10-24 | 上海产联电气科技有限公司 | Charging and discharging voltage-equalizing device for super capacitor group |
| CN103368268A (en) * | 2012-03-27 | 2013-10-23 | 无锡富洪科技有限公司 | Active voltage balancing system and active voltage balancing method for serial energy storage element group |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475369A (en) * | 2016-07-15 | 2019-03-15 | I.C.医疗股份有限公司 | Super electrosurgery blade and super electric surgical pen |
| CN110203106A (en) * | 2019-05-10 | 2019-09-06 | 杭州电子科技大学 | A kind of active mixed equilibrium circuit applied to power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105449772B (en) | 2018-03-13 |
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Granted publication date: 20180313 Termination date: 20211228 |