CN1996704A - A device for charging protection of the battery unit and detection of the charging and discharging feature of the battery - Google Patents
A device for charging protection of the battery unit and detection of the charging and discharging feature of the battery Download PDFInfo
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- CN1996704A CN1996704A CNA2006101620384A CN200610162038A CN1996704A CN 1996704 A CN1996704 A CN 1996704A CN A2006101620384 A CNA2006101620384 A CN A2006101620384A CN 200610162038 A CN200610162038 A CN 200610162038A CN 1996704 A CN1996704 A CN 1996704A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
This invention provides one device to charge and sustain battery set and to test battery discharge property, which can ensure series battery set each single cell end voltage even in end to terminate charging and to eliminate each cell initial status difference or the resulted in accordance of each cell for battery sustaining.
Description
Affiliated technical field
The present invention relates to a kind of to the charge device of maintenance and battery charging/discharging characteristic detection of battery pack, adjust the terminal voltage of each cell in the series battery consistent when can charge to series battery, and can be automatically the charge-discharge characteristic of each cell in the series battery being carried out check and analysis, the prompting user changes the serious cell that descends or lost efficacy of charge-discharge characteristic.The battery pack that is suitable for hand-held or mobile device is particularly suitable for high-power, jumbo power battery pack and uses, and belongs to the electrical equipment control class.
Background technology
The method that series battery is charged that current crowd knows is that the battery pack integral body that connects is charged, and charger detects the terminal voltage of battery pack in the charging process, when the terminal voltage of battery pack reaches assigned voltage, and complete charge.Because this method only detects the terminal voltage of battery pack, the ceiling voltage that the terminal voltage of certain cell in charging process in the battery pack might surpass allow and " overcharging ", " overcharge " life-span and the charging and discharging capabilities that can have a strong impact on battery, generation for fear of above-mentioned situation, the common practice is lower with the terminal voltage of battery pack regulation, cause battery pack really not to be full of, charged ability can not be given full play to.
Another kind has and detects and the charging method of equalization function is to the series battery charge that connects the time, detects the terminal voltage of each cell in the battery pack, when the terminal voltage of certain cell reaches assigned voltage, and the charging process of end battery pack.As, use the charger of application-specific integrated circuit (ASIC) bq29311 to charging and discharging and manage, equalizing circuit is attached on each cell, can shunt the higher cell of terminal voltage in the charging process, to reduce the charging current of this cell, reduce the rate of climb of its terminal voltage, reach the purpose of each cell terminal voltage unanimity, since when working, balanced shunt circuit can follow heating, very faint for effect high-power, jumbo battery equalizing circuit.Owing to constitute the charged ability of each cell of battery pack, the variation of each cell characteristic is inconsistent in initial difference such as charging and flash-over characteristic and life-span and the battery pack military service process, when the charged ability drop of a cell in the series battery or inefficacy, this cell shows as terminal voltage and rises too fast or slow excessively in charging process, also can follow the monomer heating, adopt above-mentioned charging method to surpass assigned voltage and to stop the charging of battery pack during the underfill still of other batteries, cause the charged ability of whole battery group to bring into play in the terminal voltage that detects a cell.
Chinese patent 03109241.1 discloses a kind of battery pack with redundant battery unit, be composed in series battery pack by an above battery unit, has more than one redundant battery unit in the battery pack, each battery unit all is provided with independent switch circuit, can detection failure and excise the fail battery unit, this technical scheme is connected each battery unit in the series battery with control circuit, when charged ability drop of certain battery unit in the battery pack or inefficacy, can switch the battery that loses effect, enable redundant battery unit, thereby improve battery-powered reliability.This scheme is provided with the cost that more than one redundant battery unit must increase battery pack in battery pack, need be during charging to managing with battery and redundant battery, the control circuit complexity, redundant battery, integrating, can not change dead battery easily with battery and Detection ﹠ Controling circuit.
Summary of the invention
The object of the present invention is to provide a kind of to the charge device of maintenance and battery charging/discharging characteristic detection of battery pack, this device can carry out multistage constant current charge or discharge to series battery integral body, detect the terminal voltage and the carrying capacity of each cell simultaneously in real time, when finishing, charging guarantees that the terminal voltage uniformity ground of each cell in the series battery reaches the charging cut-ff voltage of regulation, eliminate because the state of each cell that the difference that each cell charge-discharge characteristic changes in the difference of the initial condition of each cell or the use causes inconsistent, reach the purpose that battery pack is maintained, cause the partial monosomy battery " to overcharge " when avoiding common charging method that series battery is charged simultaneously or problem that the whole charged ability of battery pack can not be given full play to.
This Device Testing function is once charged-is discharged-circulation of charging battery pack automatically, and the charging and the flash-over characteristic of each cell detected and analyze, automatically prompting user is changed the serious cell that descends or lost efficacy of charge-discharge characteristic, guarantees the whole charged ability of battery pack.
The user can once charge after changing a cell again, and it is consistent that each cell state in the battery pack can reach again, has avoided the terminal voltage of battery of new replacing and the inconsistent problem of terminal voltage of other cell.
Invention solves the technical scheme that its technical problem adopted
In the charging servicing operations, microcontroller 8 detects the terminal voltage of each cell in the series battery in real time by A/D converter 6 and signal conditioning circuit 5, when the terminal voltage of certain cell reaches assigned voltage, microcontroller 8 control transformation switches 7 with this battery from just the battery pack of serial connection charge, switching, stop the charging to this battery, remaining cell continues to charge in the mode of series connection.After the terminal voltage of all cells all reaches the voltage of regulation, microcontroller 8 Control current control circuits 4, charging current is reduced to the next stage electric current, by change over switch 7 all batteries is inserted the serial connection charge loop again again, carry out the constant current charge of next stage electric current.Charging current is descending to be reduced step by step, reduces to the rank of regulation, complete charge process up to charging current.This method can be so that the inconsistent cell of initial end voltage terminal voltage when charging finishes all reaches the voltage of regulation in the series battery, eliminate because the inconsistent problem of terminal voltage of each cell in the series battery that difference caused that each cell charge-discharge characteristic changes in the difference of the initial condition of each cell or the use reaches the purpose that battery pack is maintained.When finishing, charging make each cell be in optimum state, the problem that has caused the partial monosomy battery " to overcharge " when having avoided common charging method that series battery is carried out whole charging effectively when battery pack is brought into play maximum charged ability.
Microcontroller 8 detects charging current in real time by A/D converter 6, signal conditioning circuit 5 and current sensor 3, and the actual charge volume of each cell measured, by the information electrode that is connected with battery pack the carrying capacity of battery pack integral body and carrying capacity, terminal voltage and the charge-discharge characteristic data of each battery are write in the battery pack attached information chip, electrical appliance can carry out continuous metering to the actual carrying capacity of battery pack when use is battery-powered, and the carrying capacity information of real-time update battery pack.
Charging/maintenance selector switch allows the user to select charging or maintenance function.Select charge function, this device can be adjusted the terminal voltage of each cell in the battery pack consistent.Select maintenance function, this device once charges automatically-discharges-circulation of charging, microcontroller 8 is finished automatically to the detection of the charging of each cell in battery pack and the battery pack and flash-over characteristic and analysis, and the state and the charge-discharge characteristic of battery pack and each cell is shown to the user by indicating circuit 10, the prompting user changes the serious cell that descends of charge-discharge characteristic
Beneficial effect of the present invention
The invention provides a kind of to the charge device of maintenance and battery charging/discharging characteristic detection of battery pack, this device carries out multistage constant current charge or discharge to series battery integral body, when finishing, charging guarantees that the terminal voltage uniformity ground of each cell in the series battery reaches the charging cut-ff voltage of regulation, eliminate because the state of each cell that the difference that each cell charge-discharge characteristic changes in the difference of the initial condition of each cell or the use causes inconsistent, realize purpose that battery pack is maintained, caused the partial monosomy battery " to overcharge " when avoiding common charging method that series battery is charged simultaneously or problem that the whole charged ability of battery pack can not be given full play to.
This Device Testing function is by once charging to battery pack-discharge-circulation of charging, charging and flash-over characteristic to each cell detect and analyze, automatically prompting user is changed the serious cell that descends or lost efficacy of charge-discharge characteristic, guarantees the whole charged ability of battery pack.
The user can once charge after changing a cell again, and it is consistent that the state of each cell in the battery pack can reach again, has avoided the terminal voltage of battery of new replacing and the inconsistent problem of terminal voltage of other cell.
Description of drawings
Concrete structure of the present invention is by following examples and structural representation explanation thereof.
Fig. 1 is a kind of to the charge electrical connection graph of device of maintenance and battery charging/discharging characteristic detection of battery pack
Fig. 2 microcontroller program flow diagram
Among the figure, 1, electrode row, 2, analog switch, 3, current sensor, 4, current control circuit, 5, signal conditioning circuit, 6, A/D converter, 7, change over switch, 8, microcontroller, 9, charging maintenance/detection selector switch, 10, indicating circuit, 11, the AC/DC module, 12, care device, 13, the information electrode, 14, warm sense electrode, 15, battery electrode, 16, discharge load.
Embodiment
Referring to Fig. 1, present embodiment is the device that 4 batteries series connected battery groups are charged maintenance and detected, and maximum charge and discharging current are designed to 2A.
Make the device 12 of batteries charging maintenance and detection by Fig. 1, wherein charging maintenance/detection selector switch 9 uses the single-pole double throw mechanical switch, change over switch 7 uses hilted broadsword conversion 5V electromagnetic relay JQC-5F, microcontroller 8 uses the AT89S52 single-chip microcomputer, works out the control program of microcontroller referring to Fig. 3.A/D converter 6 uses 12 11 passage analog-digital conversion ics of TLV2556, signal conditioning circuit 5 uses LM358 analogue amplifier and standard peripheral cell to constitute 9 road calculus of differences amplification channels, four tunnel voltages that are used to detect each cell wherein, multiplication factor is adjusted into 1V/V, four the tunnel are used to detect the temperature of each cell, multiplication factor is adjusted into 5V/V, and one the tunnel is used for charging and discharging current detection, and multiplication factor is adjusted into 10V/V.AC/DC module 11 is used commercially available 220V/5V1A, the Switching Power Supply of 24V3A, and current control circuit 4 uses TB30P06 P channel power field effect transistor, is designed to three grades of constant current controls.Analog switch 2 uses the IRF7240 field effect transistor, current sensor 3 uses the accurate sample resistance of 25 milliohms, indicating circuit 10 uses LCD MODULE HG44780, discharge load 16 uses 50 Europe 20W power resistors, electrode row 1 adopts the elastic copper sheet of the wide 2.5mm of thick 0.2mm to make, and makes and is connected by Fig. 1.
This device is connected with external battery pack, selects charging maintenance/sense switch, connect the 220V power supply, external battery pack is charged maintain or detect.
Claims (3)
1. one kind to the battery pack device that maintenance and battery charging/discharging characteristic detect that charges, and comprises electrode row 1, analog switch 2, current sensor 3, current control circuit 4, signal conditioning circuit 5, A/D converter 6, change over switch 7, microcontroller 8, maintenance/detection selector switch 9, indicating circuit 10 charge.It is characterized in that: a plurality of change over switches 7 are connected, and are connected with electrode row 1.Signal conditioning circuit 5 is connected with electrode row 1, and is connected with A/D converter 6, and A/D converter 6 is connected with microcontroller 8, and microcontroller is connected with charging maintenance/detection selector switch 9 and indicating circuit 10.
2. according to claim 1 a kind of to the battery pack device that maintenance and battery charging/discharging characteristic detect that charges, it is characterized in that: described electrode is arranged 1 and is included information electrode 13, warm sense electrode 14 and battery electrode 15.
3. according to claim 1 a kind of to the charge device of maintenance and battery charging/discharging characteristic detection of battery pack, it is characterized in that: described change over switch 7 comprises mechanical switch and simulant electronic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101620384A CN100433497C (en) | 2006-12-11 | 2006-12-11 | A device for charging protection of the battery unit and detection of the charging and discharging feature of the battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101620384A CN100433497C (en) | 2006-12-11 | 2006-12-11 | A device for charging protection of the battery unit and detection of the charging and discharging feature of the battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996704A true CN1996704A (en) | 2007-07-11 |
| CN100433497C CN100433497C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101620384A Expired - Fee Related CN100433497C (en) | 2006-12-11 | 2006-12-11 | A device for charging protection of the battery unit and detection of the charging and discharging feature of the battery |
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| CN (1) | CN100433497C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760496A (en) * | 2014-01-28 | 2014-04-30 | 安徽安凯汽车股份有限公司 | Charge and discharge capacity testing device and method for power battery pack of electric vehicle |
| CN106160041A (en) * | 2015-04-07 | 2016-11-23 | 博世汽车部件(苏州)有限公司 | For maintaining the Apparatus and method for of set of cells |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004120871A (en) * | 2002-09-25 | 2004-04-15 | Yazaki Corp | Method of regulating charge state of battery pack, and its device |
| JP2004129439A (en) * | 2002-10-04 | 2004-04-22 | Mitsubishi Heavy Ind Ltd | Voltage equalization device for backup power supply device |
| CN1489252A (en) * | 2002-10-09 | 2004-04-14 | 圣能捷科技股份有限公司 | Intelligent lithium ion battery protection circtuit |
| CN1309144C (en) * | 2003-04-04 | 2007-04-04 | 京东方科技集团股份有限公司 | Battery with redundant cell unit |
| CN100397741C (en) * | 2004-02-10 | 2008-06-25 | 深圳市鑫汇科电子有限公司 | Method for protecting series lithium cells and circuit thereof |
| US20060097700A1 (en) * | 2004-11-10 | 2006-05-11 | Eaglepicher Technologies, Llc | Method and system for cell equalization with charging sources and shunt regulators |
| US20060103350A1 (en) * | 2004-11-12 | 2006-05-18 | Akku Power Electronic Co., Ltd. | [an equalizing-charge charger] |
| JP4151662B2 (en) * | 2005-03-08 | 2008-09-17 | 株式会社デンソー | Control method and control device for charge voltage equalization circuit of battery pack |
| JP2006320044A (en) * | 2005-05-10 | 2006-11-24 | Ntt Data Corp | Battery charger |
-
2006
- 2006-12-11 CN CNB2006101620384A patent/CN100433497C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760496A (en) * | 2014-01-28 | 2014-04-30 | 安徽安凯汽车股份有限公司 | Charge and discharge capacity testing device and method for power battery pack of electric vehicle |
| CN103760496B (en) * | 2014-01-28 | 2016-06-22 | 安徽安凯汽车股份有限公司 | A kind of electric automobile power battery group charging and discharging capabilities test device and method |
| CN106160041A (en) * | 2015-04-07 | 2016-11-23 | 博世汽车部件(苏州)有限公司 | For maintaining the Apparatus and method for of set of cells |
| CN106160041B (en) * | 2015-04-07 | 2020-07-03 | 博世汽车部件(苏州)有限公司 | Apparatus and method for maintaining battery pack |
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| Publication number | Publication date |
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| CN100433497C (en) | 2008-11-12 |
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Address after: 100013, 305, Xinghua Road, Dongcheng District, Beijing, China (room 9) Patentee after: Zhao Jianhe Address before: 100013, 311, Xinghua Road, Dongcheng District, Beijing, China (room 9) Patentee before: Zhao Jianhe |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20161211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |