CN104810886B - Intelligent battery group and its connection circuit - Google Patents

Intelligent battery group and its connection circuit Download PDF

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Publication number
CN104810886B
CN104810886B CN201510173174.2A CN201510173174A CN104810886B CN 104810886 B CN104810886 B CN 104810886B CN 201510173174 A CN201510173174 A CN 201510173174A CN 104810886 B CN104810886 B CN 104810886B
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CN
China
Prior art keywords
battery
switch
unit
pole
batteries
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Expired - Fee Related
Application number
CN201510173174.2A
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Chinese (zh)
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CN104810886A (en
Inventor
何磊
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Suzhou Institute of Nano Tech and Nano Bionics of CAS
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Suzhou Institute of Nano Tech and Nano Bionics of CAS
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Application filed by Suzhou Institute of Nano Tech and Nano Bionics of CAS filed Critical Suzhou Institute of Nano Tech and Nano Bionics of CAS
Priority to CN201510173174.2A priority Critical patent/CN104810886B/en
Publication of CN104810886A publication Critical patent/CN104810886A/en
Application granted granted Critical
Publication of CN104810886B publication Critical patent/CN104810886B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H02J7/0021
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a kind of intelligent battery group and its connection circuit.The connection circuit includes two or more series-connected cell unit, and each battery is equipped with three switches, and a pole of each battery connects one end of one the 3rd switch, and another pole of the other end connection adjacent cell of the 3rd switch forms series battery;One pole of each battery electrically connects by a second switch with the homopolarity of a detection circuit port and the stand-by power supply;Another pole of each battery pack electrically connects by one the 3rd switch one first switch of series connection with the homopolarity of a detection circuit port and the stand-by power supply.The intelligent battery group includes connection circuit.The present invention can realize the independent control to each battery unit in batteries, and realize and the real-time automatic monitoring of batteries, automatic trouble diagnosis and automatic fault are smoothly repaired, can effective increasing storage battery service life, prevent electrical equipment and be damaged, and can use manpower and material resources sparingly.

Description

Intelligent battery group and its connection circuit
This case is to application title " having the intelligent battery group and its connection circuit from maintenance function ", the applying date 2012 On November 6, in, the divisional application of application number 201210438831.8.
Technical field
It is more particularly to a kind of that there is Autonomous test, self diagnosis, the intelligence of self-repair function the present invention relates to a kind of batteries Batteries and its connection circuit.
Background technology
Often there is Problem of Failure in actual use in batteries at present, and its performance is generally:In making for batteries In, lagging batteries are not found in time early stage, cause batteries deterioration accumulation, aggravation, cause in batteries deterioration Battery premature failure.And it has been reported that during batteries power supply capacity deficiency, the backwardness single-unit typically in batteries Caused by battery.
By taking the offline batteries of Office of the Telecommunications Authority as an example, found in actual capacity recovery operation in recent years, usual one Group storage battery only has 1~2 dead battery.If behindhand battery can not be detected in time, in order to ensure the reliable of communication power supply Property it is necessary to whole group change battery, this just not only increases maintenance workload, and a large amount of batteries can be caused useless by wrong report, But in fact many units are at this state now.
The maintenance of battery at present is specifically carried out based on daily detection and prospective maintenance to batteries Regularly verification property discharge test and volume test, is changed and maintenance process further according to the result of test to battery.This A little tests are required for testing staff to show up carrying out expending a large amount of manpower and materials.But recently it has been observed that using battery management (BMS) importance that technology is applied for batteries.Preferable BMS technologies should have following functions:
(1) SOC estimates:The state-of-charge SOC of accurate estimation batteries, i.e. battery dump energy, ensure that SOC is maintained In rational scope, prevent due to the damage of overcharge or overdischarge to battery, it is more so as to forecast that energy-storage battery there remains at any time The state-of-charge of few energy or energy-storage battery.
(2) dynamic monitoring:In battery charge and discharge process, in real time gather batteries in every piece of battery terminal voltage and Temperature, charging and discharging currents and battery bag total voltage, prevent battery from overcharge or overdischarge phenomenon occurs.It can provide in time simultaneously Battery condition, problematic battery is picked out, make remaining capacity estimation model is implemented as possibility.
(3) equilibrium between battery:As cell equalizaing charge, each battery in batteries is set all to reach equilibrium one The state of cause.
But current most of battery management techniques are not well positioned to meet the demand of practical application, reason is: First, it is difficult to each cell isolating independent detection from batteries circuit;Pinpointed the problems second, working as During battery, it is impossible to repair immediately.
Shown in Figure 1 is a kind of new battery management technique gone out on latest developments, and its operation principle is substantially:
The supplying power for outside of batteries lies prostrate for V=K ε, and ε is the electromotive force of cell, wherein using N>K battery connects Connect.For i-th of battery, as switch SI, 1Closure while SI, 2During opening, battery i access circuit loops;As switch SI, 1Open same When SI, 2During closure, battery i branch circuit loops.When without loss of generality, by taking N=K+1 as an example:Assuming that n-th electricity during normal work Pond bypasses, and now finds that i-th of battery breaks down (short circuit or electric energy will exhaust), then repair action is to access battery N, By battery i branch.The technology can realize instant reparation, but switch S in actual repair actionI, 1And SI, 2Operation it is inevitable Whole batteries loop moment can be made to disconnect and then close, moment impact electric current will necessarily be produced among these, so as to shadow Ring electrical equipment normal work, or even damage electrical equipment.
The content of the invention
The present invention is intended to provide a kind of intelligent battery group and its connection circuit having from maintenance function, it can be realized pair The independent control of each battery unit in batteries, and realize real-time automatic monitoring to batteries, automatic trouble diagnosis Smoothly repaired with automatic fault, so as to overcome deficiency of the prior art.
For achieving the above object, present invention employs following technical scheme:
A kind of intelligent battery group connection circuit having from maintenance function, including the two or more battery list being arranged in series Member, wherein, a pole of a battery unit be concatenated successively one the 3rd switch set and a first switch with one detect port and The pole electrical connection of stand-by power supply, another second switch of pole one and another detection port and another extremely electricity of the stand-by power supply Connection.
As more one of preferred embodiment, a pole of first battery unit in the two or more battery unit Electrically connected through one the 3rd switch with one end of load and/or charge power supply, another pole of last battery unit is born with described Carry and/or the other end of charge power supply electrically connects, and the pole and last battery unit except first battery unit Outside another pole, the one of each battery unit extremely switchs and another battery list before the battery unit through one the 3rd Another pole electrical connection of member.Wherein, when the batteries, which connect circuit, to be connected simultaneously with load and charge power supply, system work In floating charge state.
As more one of preferred embodiment, the first switch, second switch, third switch are opened using controllable Close, any one of the gate-controlled switch at least in field-effect transistor and relay.
Also, the field-effect transistor includes MOSFET field-effect transistors.
Any one of the relay at least in solid-state relay, contact relay and light coupling relay.
As more one of preferred embodiment, the batteries connect circuit also with least to control described the The control unit connection of one switch, second switch and the 3rd switch.That is, control unit can select one in all switches or It is multiple, it individually, synchronously or according to setting order is closed or is disconnected.
As more one of preferred embodiment, if contained battery unit is N number of in batteries, N, which takes, to be more than or waits In 2 positive integer, then the batteries connection circuit is at least with any one in following mode of operation:
(1) when the connection for cutting off batteries connection circuit and stand-by power supply, and by all first switches and second Switch is opened, while all three switches are closed, then batteries are in normal operating conditions, and connect charge power supply And/or load realization is charged normal or discharged;
(2) when the connection for cutting off batteries connection circuit and stand-by power supply, and will except with i-th of battery unit All first switches, second switch and the 3rd switch outside the first switch of cooperation, second switch and the 3rd switch are all beaten Open, then, the i-th battery unit is isolated out, and the running status of i-th battery unit is examined in real time by detecting port Survey, i is any positive integer in 1~N;
(3) when the load and/or charging equipment access the batteries connection circuit, if the i-th battery unit goes out Existing failure, then:
A. if short circuit occurs for the i-th battery unit:Be first turned on i-th battery unit coordinate the 3rd switch, by this i-th Battery unit bypasses, and the first switch and second switch that then closure coordinates with i-th battery unit, accesses stand-by power supply reparation Failure, now remaining first switch and second switch are opened;
B. the i-th battery unit is if desired made to be stopped:First closure with i-th battery unit coordinate first switch and Second switch, make i-th battery unit and the reserve battery accessed in parallel, then open the with i-th battery unit cooperation Three switches, i-th battery unit are bypassed, now failure is repaired.
Further, the batteries connection circuit also has following mode of operation:
(4) charging of stand-by power supply:
Opened when by all first switches and second switch, while all three switches are closed, and by standby electricity The batteries connection circuit, closure and the first switch and second switch of the cooperation of the i-th battery unit are accessed in source, then standby electricity Charged with the i-th battery units in parallel in source;Charged in this way, realizing stand-by power supply timeshare rotation with each battery units in parallel.
It is a kind of to have from the intelligent battery group for overhauling function, including the intelligence storage as described above having from maintenance function Battery back connection circuit.
Further, it is described that there is the intelligent battery group from maintenance function also to include:
For gathering and the monitoring of the working condition related data of each battery unit and detection unit in batteries;
Control unit, including:
At least it is used for the work shape for adjusting all first switches, second switch and the 3rd switch in batteries connection circuit The switch driving circuit of state, and,
The control module being connected with switch driving circuit and monitoring with detection unit.
The control module includes calculating and control process unit, and the calculating is with control process unit also through communicating with depositing Storage unit is connected with communication, alarm equipment.
Compared with prior art, advantage of the present invention at least that:
(1) under batteries off working state, realize each battery units of batteries is implemented isolation from Dynamic detection, and detection data are stored or remotely reported automatically;
(2) under batteries working condition, real-time monitoring, diagnosis to each battery unit working condition are realized, And the battery that can pinpoint the problems in time;
(3) for finding the problem of battery, can automatically repair, can be alerted after reparation, make batteries still can be with Normal work, rush repair is avoided, used manpower and material resources sparingly.
Brief description of the drawings
Fig. 1 is a kind of existing batteries attachment structure schematic diagram;
Fig. 2 is the structural representation of batteries connection circuit in a preferred embodiment of the present invention;
Fig. 3 is the structured flowchart for having in a preferred embodiment of the present invention the intelligent battery group from maintenance function.
Embodiment
Technical scheme is further described below in conjunction with a preferred embodiment and accompanying drawing.
As it was previously stated, many deficiencies be present in existing battery management technique, be provided with inventor it is a kind of new Batteries connect circuit, as shown in fig.2, an exemplary embodiments as batteries connection circuit, it includes compiling Number multiple battery units for being 1 to i (can be the combination of cell or multiple cells, be referred to as " electricity below Pond "), i=1,2 ... N, N are positive integer more than or equal to 2, the specifications and models all same of each of which battery, and its is specified Charging voltage is ε, then the nominal charging voltage of batteries is N ε.
And simultaneously, a series of switch S is also included in the embodimentI, n, in the present embodiment, n is selected from 1,2 or 3, and it can It is respectively defined as first switch, second switch and the 3rd switch.
Postscript, also include an at least stand-by power supply in the embodiment, it can be a capacity phase identical with battery i voltages Same or different battery or a special D.C. regulated power supply, output voltage are consistent with battery unit.
Fig. 2 is further regarded to, the mode of operation of the embodiment is as follows:
1) as switch SI, 1And SI, 2, it is fully open, while SI, 3All closure, wherein i=1,2 ... N, batteries are in Normal operating conditions, connection charge power supply either load (electrical equipment) and charging are just realized as conventional accumulators group or is put Electricity.
2) when stand-by power supply disconnection, except SI, 1, SI, 2And SI, 3Outside closure, rest switch is fully open, now i-th of electricity Pond is isolated out, is connected to monitoring unit and is detected.It is real afterwards that this function disconnects electrical equipment (load) for batteries It is highly effective to apply automatic inflatable electro-detection.
When stand-by power supply disconnection, except SI, 1, SI, 2Outside all three switch closures, rest switch is fully open, now I-th of battery is connected to monitoring unit progress running status and detected in real time.
3) in batteries external load or charging equipment, system is entered to the voltage, electric current and electricity of each piece of battery Row monitoring, once find that a certain piece of battery breaks down, it is assumed that it is i-th piece of battery, then:
A. if because of situations such as breakdown short circuit occurs for battery i:It is first turned on switching SI, 3Battery i is bypassed;Then close SI, 1, SI, 2, access reserve battery or power supply repair failure, and alert.The inevitable batteries supplying power for outside of this situation has Short interruption;
B. if battery i needs to be stopped for the transition that prevents from discharging, or excessive work on of internal resistance will cause whole group Battery failure:S is closed firstI, 1, SI, 2, by battery i parallel connection reserve batteries, then open SI, 3Battery i is bypassed, now failure It is repaired and alerts.Batteries supplying power for outside will not interrupt in recovery project, and ensure that output electricity to the full extent The stabilization of pressure and electric current.
4) charging of reserve battery, can be completed by following two modes:
A. S is switchedI, 1And SI, 2, it is fully open, while SI, 3All closures, wherein i=1,2 ... N,;Reserve battery switchs Closure;Timesharing closure switch SI, 1And SI, 2, with battery i charged in parallels;
B. special charging circuit is provided for reserve battery to charge respectively with other batteries;
C. without charging if stand-by power supply is not battery.
Further, for ease of each switch S to batteries connection circuitI, nIt is controlled, respectively switchs SI, nIt is preferred that adopt With gate-controlled switch, MOSFET field-effect transistors, solid-state relay, contact relay, optocoupler relay are included but are not limited to The various relays such as device, and realized by a control unit and the working condition of these gate-controlled switches is automatically controlled.The control Unit processed may include a switch driving circuit and a control module, and switch driving circuit system coordinates with each gate-controlled switch, and by controlling Molding block controls.Obvious, the control module can use the equipment such as the usual computer system of industry, single-chip microcomputer, PLC, but not It is limited to this.
By the design of aforementioned accumulator cells group connection circuit, following good effect can be at least produced:
(1) due to realizing the control to each battery unit in batteries, monitor and make in real time automatically realizing In the case of fault diagnosis, can automatic smoothing repair failure, i.e. repair action avoids instant cut-off, ensure that storage as far as possible The voltage and current of battery pack output is steady;
(2) battery unit of any one in batteries can be isolated from batteries circuit implementation inspection Survey, so as to convenient remotely or automatically facilities and equipments detection and reported data.
One of typical case scheme as the embodiment, refering to be shown in Fig. 3 based on aforementioned accumulator cells group connect circuit Structure has from the intelligent battery group for overhauling function, and it can realize Autonomous test, self diagnosis, selfreparing.
Further say, the intelligent battery group may include batteries connection circuit, switch driving circuit, calculating and control Processing unit processed and monitoring and detection unit.
Obvious, aforementioned accumulator cells group connection circuit is realized monocell isolation detection in batteries and repaired in real time Basis, wherein employ a series of gate-controlled switch, these are switched on-off can be by calculating and the decision-making of control process unit and referring to Order, and realized via switch driving circuit.And for each battery in batteries working condition relevant information (such as electricity Pressure, electric current, temperature etc.), it can be acquired by monitoring with detection unit, and be reported at calculating and control process unit Reason, the status data (capacity and dump energy of such as each battery) of battery is drawn, and then by calculating and control process unit Carry out decision-making and send instruction.
Further, also settable communication and memory cell in the intelligent battery group, use and realize depositing for historical data Storage and long-range information reporting, alarm, remote control interaction etc., its function can be accepted or rejected according to actual needs.
It is pointed out that it is described above and in the embodiment shown on drawing, fixed of the invention set that be limited can not be parsed Count thought.Holding identical skill in the technical field of the present invention can be by the technical thought of the present invention in the form of various Improvement change, such improvement and change are interpreted as belonging in protection scope of the present invention.

Claims (7)

1. a kind of intelligent battery group connects circuit, include the series battery that N number of battery cells in series is formed, N to be more than or Integer equal to 2, it is characterised in that each battery unit among the series battery is by a battery, a first switch, one Second switch and one the 3rd switch composition,
A pole of battery is connected with one end of the 3rd switch in each battery unit, and the other end of the 3rd switch is opened with first One end connection of pass, the other end of the first switch detect one end company of port circuit with a pole of a stand-by power supply and one simultaneously Connecing, another pole of the battery is connected through second switch with another pole of the stand-by power supply and the other end of the detection port circuit,
Also, the other end of the 3rd switch and one end of first switch in first battery unit in the series battery Also be connected simultaneously with load or a pole of charge power supply, another pole of the battery in n-th battery unit also through second switch and Another pole of the load or charge power supply connects,
In addition, in addition to n-th battery unit, adjacent cell of another pole of battery also with downstream in remaining each battery unit The other end connection of 3rd switch in unit,
One pole of any battery among the series battery and a pole of stand-by power supply, detect one end of port circuit, bear Carry or a pole of charge power supply is all positive terminal or negative pole end.
2. intelligent battery group according to claim 1 connects circuit, it is characterised in that the first switch, second open Pass, the 3rd, which switch, uses gate-controlled switch, and the gate-controlled switch is any one at least in field-effect transistor and relay Kind;
Wherein, the field-effect transistor includes MOSFET field-effect transistors;
Any one of the relay at least in solid-state relay, contact relay and light coupling relay.
3. intelligent battery group according to claim 2 connects circuit, it is characterised in that the batteries connect circuit Also with least to control the first switch, second switch and the 3rd switch control unit be connected.
4. a kind of intelligent battery group, it is characterised in that it includes the intelligent battery as any one of claim 1-3 Group connection circuit.
5. intelligent battery group according to claim 4, it is characterised in that it also includes:
For gathering and the monitoring of the working condition related data of each battery unit and detection unit in batteries;
Control unit, including:
At least it is used to adjust the working condition of all first switches, second switch and the 3rd switch in batteries connection circuit Switch driving circuit, and,
The control module being connected with switch driving circuit and monitoring with detection unit.
6. intelligent battery group according to claim 5, it is characterised in that the control module is included at calculating and control Manage unit.
7. intelligent battery group according to claim 6, it is characterised in that:The intelligent battery group also include communication with Memory cell, the calculating are connected with control process unit through communicating with memory cell with communication, alarm equipment.
CN201510173174.2A 2012-11-06 2012-11-06 Intelligent battery group and its connection circuit Expired - Fee Related CN104810886B (en)

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CN201210438831.8A CN102969756B (en) 2012-11-06 2012-11-06 Intelligent storage battery pack with self-detection function and connection circuit thereof
CN201510173174.2A CN104810886B (en) 2012-11-06 2012-11-06 Intelligent battery group and its connection circuit

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CN104104119B (en) * 2013-04-07 2017-03-01 力博特公司 A kind of intelligent battery
US9592744B2 (en) 2013-12-06 2017-03-14 SZ DJI Technology Co., Ltd Battery and unmanned aerial vehicle with the battery
CN105576747B (en) * 2015-12-25 2018-08-03 广州亿航智能技术有限公司 The power-supply management system and aircraft of more rotor manned aircraft
CN106450521B (en) * 2016-10-28 2023-04-25 泉州华威国维电子科技有限公司 Automatic inspection system for storage battery
CN106849260A (en) * 2017-03-15 2017-06-13 中南大学 A kind of battery pack protective circuit and method
CN107394844B (en) * 2017-06-19 2019-02-15 广州汇安科技有限公司 A kind of portable power source device and control method of highly reliable strong adaptability
CN110048501A (en) * 2019-03-29 2019-07-23 国网山东省电力公司邹城市供电公司 A kind of Intelligent switching device of battery group failure
CN110676530A (en) * 2019-09-16 2020-01-10 常州工学院 Thermal runaway prevention system for series battery pack
CN111794403A (en) * 2020-06-23 2020-10-20 金松果新材料科技有限公司 Modularization wall body with integrated form energy storage system
CN112751104A (en) * 2020-12-31 2021-05-04 凯博能源科技有限公司 Battery pack, battery system and battery pack thermal runaway control method

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