CN103117572A - System for realizing remote free flying two-way nondestructive balance through one-way transformer - Google Patents
System for realizing remote free flying two-way nondestructive balance through one-way transformer Download PDFInfo
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- CN103117572A CN103117572A CN2013100301451A CN201310030145A CN103117572A CN 103117572 A CN103117572 A CN 103117572A CN 2013100301451 A CN2013100301451 A CN 2013100301451A CN 201310030145 A CN201310030145 A CN 201310030145A CN 103117572 A CN103117572 A CN 103117572A
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Abstract
The invention discloses a system for realizing remote flying two-way nondestructive balance through a one-way transformer, and relates to the field of battery management systems. The system mainly comprises a battery pack module, a multi-way gating switch module, a balance bus module, a bridge circuit conversion module, a power conversion module and an energy feedback module, and is characterized in that a multi-way switch can be switched to any battery in any working period under the control of a singlechip; the power energy of any battery can be pulled out in each period, and also can be compensated; and the whole system pulls the energy of a high-energy battery out and pushes the energy to a low-energy battery through a single one-way transformer, so that nondestructive remote random flying balance of energy among the batteries is realized. The system has a simple structure and is high in reliability and energy conversion efficiency and convenient to use, and the use efficiency of a battery system is greatly improved; and in addition, the circuit design is simple and practicable, so that cost is reduced.
Description
Technical field
The present invention relates to the battery management system technical field, specifically a kind of unidirectional transformer is realized the system of the long-range two-way harmless cell balancing that freely flies over.
Background technology
Vehicle technology, battery management system technology wherein are key technologies in vehicle technology, and the performance quality of battery management system has directly determined useful life and the efficient of battery pack.Wherein in the battery pack of new-energy automobile and energy-storage system due to unbalanced useful life that is having a strong impact on whole battery pack of each cell, the unbalanced problem that solves cell becomes the key technology in the battery pack system design.In existing balancing technique, mainly be divided into two large mainstream technologys: 1, with the equilibrium that diminishes of load resistance, its shortcoming be balanced energy when limited, balanced system's heating higher; 2, two-way transformer non-dissipative equalizing, its shortcoming are that design circuit is complicated, balanced conversion efficiency is low, cost is high.
Summary of the invention
The objective of the invention is: provide a kind of unidirectional transformer to realize the long-range two-way non-dissipative equalizing system of flying over, system mainly comprises battery module, multi-channel gating switch module, balanced busbar modules, bridge circuit conversion module, power conversion module, energy feedback module.Described Single-chip Controlling variable connector can switch to any battery in any work period, and each cycle can be pulled out the power supply energy of any one battery, also can add to the power supply energy of any one battery.Whole system is pulled out the energy content of battery of higher-energy by single unidirectional transformer and is pushed to more low-energy battery, has realized the harmless long-range equilibrium of flying over arbitrarily of energy between any battery.
According to above-mentioned purpose, the technical solution used in the present invention is: a kind of unidirectional transformer is realized the long-range two-way non-dissipative equalizing that flies over, and system mainly comprises battery module, multi-channel gating switch module, balanced busbar modules, bridge circuit conversion module, power conversion module, energy energy channel module.
Described transformer one-way only operation, system bidirectional equilibrium.
Described transformer one-way only operation, naturally flow to by voltage difference the battery for the treatment of makeup energy at the energy of the secondary formation of power conversion.
Described unidirectional transformer is realized the long-range two-way non-dissipative equalizing system of flying over, and can realize flying over without the energy between any battery of the pulse of storage capacitor, both the long-range function that flies over of Pulse by Pulse energy.
Described unidirectional transformer is realized the long-range two-way non-dissipative equalizing system of flying over, and it is characterized in that: the battery that energy loads and energy feedback all can conversion be switched on each time, realize energy transfer between any battery in system, and both long-rangely freely fly over.
Compared with prior art, advantage of the present invention and beneficial effect are:
1, native system utilizes the single transformer one-way only operation, realizes the bidirectional equalization of system, has simplified circuit, has improved the efficient of equalizing system.
2, the topological structure of native system can be realized flying over without the Pulse by Pulse energy remote energy between any battery of the pulse of storage capacitor, has simplified system configuration, makes equilibrium more flexible, has improved the operating efficiency of equalizing system.
3, native system utilizes single transformer to realize energy transfer between battery arbitrarily in system, realized a kind of simple in structure, efficient is high, the long-range two-way non-dissipative equalizing system of flying over of intelligent integral, system is easy to use, wide application, cost are low.
Description of drawings
Fig. 1 is theory structure schematic diagram of the present invention.
Fig. 2 is that the energy feedback switch is at the theory structure schematic diagram of transformer secondary output.
Fig. 3 is that the energy feedback switch is at the theory structure schematic diagram of primary.
Wherein:
1, battery module, 2, the multi-channel gating switch module, 3, balanced busbar modules, 4, the bridge circuit conversion module, 5, the power conversion module, 6, energy feedback module 601 energy access switches, 602 power-supply filters
Embodiment
Fig. 2 is the principle schematic that unidirectional transformer is realized the long-range two-way non-dissipative equalizing system that flies over.There is following content its specific implementation aspect:
1, unidirectional transformer realizes that the long-range two-way non-dissipative equalizing system of flying over comprises: battery module 1, multi-channel gating switch module 2, balanced busbar modules 3, bridge circuit conversion module 4, power conversion module 5, energy feedback module 6.
2, when single-chip microcomputer detect in battery module 1, the battery that need to pull out energy is arranged after, system connects the multi-channel gating switch at its two ends by module 2 gatings, the voltage of this batteries namely is presented on 201 and 202 two ends of module 2.
3, the cell voltage of connecting is presented on 401 and 402 two ends by balanced busbar modules 3.
4, system's control bridge circuit conversion module 4 makes the voltage at 401 and 402 two ends always present high level at 403 ends, 404 ends present low level.
5, after the two ends of pulling out battery have been connected to elementary 503 and 504 two ends of power conversion module 5, system starts the energy conversion circuit and energy is transformed to secondary 504 and 505 two ends of power conversion module 5 from elementary 503 and 504 two ends of power conversion module 5.
6, the energy storage after conversion is on secondary 504 and 505 two ends and capacitor C 2 of power conversion module 5.
Voltage amplitude after capacitance by choosing C2 and the conversion of setting can satisfy needs and the needs of feedback time of every secondary source feedback energy.
7, stop the energy conversion of power conversion module 5, variable connector module 2 is connected the single battery that needs makeup energy.
8, system controls bridge circuit conversion module 4, make low level energy that the high level that presents at energy access switch 403 two ends of energy feedback module 6 and 404 ends present be loaded into battery two ends to press polarity consistent.
9, connect the energy access switch 601 of energy feedback module 6, the energy of power conversion negative terminal is because the reason of voltage difference flows on the battery of having connected naturally through energy feedback module 6.
Above step has been completed from a high battery of energy and has been pulled out portion of energy, then this energy is moved the overall process of the low battery of another energy, principle such as Fig. 1.
10, Fig. 3 is that native system power converting circuit module 5 adopts the power conversion switch to be arranged on elementary working method.Performing step is:
1. certain batteries is switched to input, energy access switch 601 closures of transformer, the energy of this batteries is charged on primary energy capacitor C 1 naturally;
2. disconnect energy access switch 601;
3. connect the battery that needs charging;
4. system's starting transformer work, transformer arrive the energy conversion of elementary electric capacity C1 secondary;
5. because transformer is step-up transformer, transform on the battery that is recharged that secondary energy connected by the system that naturally is charged to.
In circuit shown in Figure 2, C1＞10*C2 is chosen in suggestion
11, the described power converting circuit of above content also can adopt BOOST booster circuit form.
Claims (8)
1. a unidirectional transformer is realized the long-range two-way non-dissipative equalizing system of flying over, and system mainly comprises battery module, multi-channel gating switch module, balanced busbar modules, bridge circuit conversion module, power conversion module, energy feedback module.Described system features is: the Single-chip Controlling variable connector can switch to any battery in any work period, each cycle can be pulled out the power supply energy of any one battery, also can replenish the power supply energy of any one battery, the energy that whole system is pulled out the battery of higher-energy by single unidirectional transformer is pushed to more low-energy battery, has realized the harmless long-range equilibrium of flying over arbitrarily of energy between any battery.
2. a kind of unidirectional transformer according to claim 1 is realized the long-range two-way non-dissipative equalizing system of flying over, and it is characterized in that: transformer one-way only operation, system bidirectional are balanced.
3. a kind of unidirectional transformer according to claim 2 further is characterized in that: described transformer one-way only operation, naturally flow to by voltage difference the battery for the treatment of makeup energy at the energy of the secondary formation of power conversion.
4. a kind of unidirectional transformer according to claim 1 is realized the long-range two-way non-dissipative equalizing system of flying over, and it is characterized in that: can realize flying over without the energy between any battery of the pulse of storage capacitor, both the long-range function that flies over of Pulse by Pulse energy.
5. a kind of unidirectional transformer according to claim 1 is realized the long-range two-way non-dissipative equalizing system of flying over, it is characterized in that: in energy loading each time and energy feedback circulation, the battery that system all can conversion be switched on, realize energy arbitrarily transfer between battery in system, both realized long-rangely freely flying over.
6. a kind of unidirectional transformer according to claim 1 is realized the long-range two-way non-dissipative equalizing system of flying over, and it is characterized in that: during power converting circuit work, the bidirectional energy channel switch disconnects, when power converting circuit quits work, and the energy feedback closing of circuit.
7. a kind of unidirectional transformer according to claim 2, further it is characterized in that: the energy feedback switch can also be located at the elementary of energy conversion, it is characterized in that: during the energy input, the energy feedback switch is closed, and during energy feedback, the energy feedback switch disconnects.
8. a kind of unidirectional transformer according to claim 1 is realized the long-range two-way non-dissipative equalizing system of flying over, and it is characterized in that: further power converting circuit can adopt the BOOST circuit form to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100301451A CN103117572A (en) | 2013-01-28 | 2013-01-28 | System for realizing remote free flying two-way nondestructive balance through one-way transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100301451A CN103117572A (en) | 2013-01-28 | 2013-01-28 | System for realizing remote free flying two-way nondestructive balance through one-way transformer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201742141U (en) * | 2010-07-21 | 2011-02-09 | 中航锂电（洛阳）有限公司 | Charge and discharge balancing device for serially-connected power storage bodies |
| CN102148518A (en) * | 2011-03-18 | 2011-08-10 | 清华大学深圳研究生院 | Secondary battery pack charging and discharging dynamic feedback equalizing device and method |
| CN102810895A (en) * | 2012-08-28 | 2012-12-05 | 哈尔滨工业大学 | Circuit and method for balancing electric quantity of storage battery pack |
| CN102832653A (en) * | 2011-12-29 | 2012-12-19 | 中航锂电（洛阳）有限公司 | Active equalization circuit for multi-monomer series battery |
| US20130099723A1 (en) * | 2009-09-29 | 2013-04-25 | O2Micro Inc. | Systems and methods for cell balancing |
-
2013
- 2013-01-28 CN CN2013100301451A patent/CN103117572A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130099723A1 (en) * | 2009-09-29 | 2013-04-25 | O2Micro Inc. | Systems and methods for cell balancing |
| CN201742141U (en) * | 2010-07-21 | 2011-02-09 | 中航锂电（洛阳）有限公司 | Charge and discharge balancing device for serially-connected power storage bodies |
| CN102148518A (en) * | 2011-03-18 | 2011-08-10 | 清华大学深圳研究生院 | Secondary battery pack charging and discharging dynamic feedback equalizing device and method |
| CN102832653A (en) * | 2011-12-29 | 2012-12-19 | 中航锂电（洛阳）有限公司 | Active equalization circuit for multi-monomer series battery |
| CN102810895A (en) * | 2012-08-28 | 2012-12-05 | 哈尔滨工业大学 | Circuit and method for balancing electric quantity of storage battery pack |
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Application publication date: 20130522 |