CN104836261A - Battery pack charging control method and apparatus - Google Patents
Battery pack charging control method and apparatus Download PDFInfo
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- CN104836261A CN104836261A CN201410044480.1A CN201410044480A CN104836261A CN 104836261 A CN104836261 A CN 104836261A CN 201410044480 A CN201410044480 A CN 201410044480A CN 104836261 A CN104836261 A CN 104836261A
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- battery pack
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Abstract
Provided is a battery pack charging control apparatus, comprising a control unit, a charging unit, a current detection unit and a plurality of voltage detectors. The charging unit is used for performing constant current charging on a battery pack with a first preset current threshold value in starting charging; the current detection unit is used for detecting the charging current of the battery pack in real time; each voltage detector is in electric connection with two ends of one of monomer battery cells to be used for detecting the voltage of a corresponding monomer battery cell in real time. The control unit is used for controlling the charging unit to perform constant voltage charging on the battery pack when the voltage of any monomer battery cell in the battery pack reaches a preset voltage threshold value, and controls the charging unit to stop charging when the charging current is lower than a second preset current threshold value, wherein the constant voltage charging maintains the voltage of the monomer battery cell reaching the voltage threshold value at the voltage threshold value before the charging unit dynamically regulates the charging current. The invention also relates to a battery pack charging control method.
Description
Technical field
The present invention relates to battery boosting technology, particularly relate to a kind of batteries charging control method and device.
Background technology
General large-scale energy storage device, electric motor car or oil and electricity hybrid vehicle etc. all need high capacity cell to provide required electric energy.Described high capacity cell is generally to be connected the battery pack formed by many cells, thus can obtain higher output voltage.
Generally can because the tolerance on manufacturing, the unequal factor of temperature cause internal resistance inconsistent between each cell of battery pack.When charging, then voltage may be caused due to the internal resistance difference between each cell uneven, easily make cell generation overvoltage and cause the situations such as battery pack expands, accelerated ageing even damages.
Summary of the invention
For the problems referred to above, be necessary to provide a kind of batteries charging control device of cell generation over-voltage condition when can effectively avoid charging.
In addition, there is a need to provide a kind of batteries charging control method of cell generation over-voltage condition when can effectively avoid charging.
A kind of batteries charging control device, for charging to a battery pack, described battery pack comprises the cell core of multiple mutual series connection, described batteries charging control device comprises control unit, charhing unit, current detecting unit and multiple voltage detector, described charhing unit is electrically connected to described battery pack, carries out constant current charge for the first current threshold preset with when charge initiation to battery pack; Described current detecting unit is electrically connected between described battery pack and described charhing unit, for detecting the charging current of described battery pack in real time; Each voltage detector is electrically connected to the two ends of one of them cell core, for detecting the voltage of corresponding cell core in real time; Described control unit is electrically connected to described charhing unit, current detecting unit and each voltage detector, described control unit be used for the voltage of any one cell core of battery pack reach one preset threshold voltage time control charhing unit constant voltage charge is carried out to battery pack, and described charging current lower than one preset the second current threshold time control charhing unit stop charging; Wherein said constant voltage charge refers to that described charhing unit carries out dynamic adjustments to charging current and makes the aforementioned voltage reaching the cell core of threshold voltage maintain described threshold voltage.
A kind of batteries charging control method, control for carrying out charging to a battery pack, described battery pack comprises the cell core of multiple mutual series connection, and the method comprises the steps:
The first current threshold preset with one when charge initiation carries out constant current charge to battery pack;
Carry out constant voltage charge when the voltage of any one cell core of battery pack reaches default threshold voltage to battery pack, wherein said constant voltage charge refers to that carrying out dynamic adjustments to the charging current of battery pack makes the aforementioned voltage reaching the cell core of threshold voltage maintain described threshold voltage; And
When described charging current stops charging lower than during the second current threshold preset.
Described batteries charging control device and method are when the voltage of any one cell core reaches threshold voltage, then to battery pack with the described cell core reaching threshold voltage for benchmark carries out constant voltage charge, so can ensure that each cell core of battery pack overvoltage can not occur, avoid owing to producing superpotential situation because internal resistance is different in charging process between each cell core.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the batteries charging control device of better embodiment of the present invention.
The curve chart of the voltage of the charging current that Fig. 2 is battery pack shown in Fig. 1 and the cell core of this battery pack.
Fig. 3 is the flow chart of the batteries charging control method of better embodiment of the present invention.
Main element symbol description
| Batteries charging control device | 100 |
| Battery pack | 200 |
| Cell core | 210 |
| Charhing unit | 10 |
| Switch element | 20 |
| Current detecting unit | 30 |
| Voltage detection unit | 40 |
| Control unit | 50 |
| Voltage detector | 41 |
| Electric current | I |
| Voltage | V |
| First current threshold | I1 |
| Second current threshold | I2 |
| Threshold voltage | V1 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, the batteries charging control device 100 of better embodiment of the present invention controls for carrying out charging to battery pack 200.Battery pack 200 comprises the cell core 210 that multiple both positive and negative polarity is connected successively.Batteries charging control device 100 comprises charhing unit 10, switch element 20, current detecting unit 30, voltage detection unit 40 and control unit 50.
Charhing unit 10 is electrically connected to positive pole and the negative pole of battery pack 200, charges for giving battery pack 200.
Switch element 20 is electrically connected between the positive pole of charhing unit 10 and battery pack 200, for controlling the break-make of the charge path between charhing unit 10 and battery pack 200.
Current detecting unit 30 is electrically connected between the negative pole of battery pack 200 and charhing unit 10, for detecting the size of the charging current I of battery pack 200 in real time.
Voltage detection unit 40 is electrically connected to battery pack 200, for detecting the voltage of each cell core 210 of battery pack 200.Here the voltage of the cell core 210 of indication refers to the voltage difference of its both positive and negative polarity, that is, the pressure drop on this cell core 210.Therefore, the voltage of whole battery pack 200 is the voltage sum of each cell core 210.In the present embodiment, voltage detection unit 40 comprises the voltage detector 41 identical with cell core 210 quantity.Each voltage detector 41 is electrically connected to positive pole and the negative pole of the cell core 210 of one of them correspondence, for detecting the voltage V of the cell core 210 of this correspondence in real time.
Control unit 50 is electrically connected to charhing unit 10, switch element 20, current detecting unit 30 and voltage detection unit 40.The voltage V of the charging current I that control unit 50 received current detecting unit 30 exports and each cell core 210 that voltage detection unit 40 exports.Control unit 50 is for controlling according to the size of the size of described charging current I and the voltage V of each cell core 210 size that charhing unit 10 regulates charging current I automatically.Particularly, when battery pack 200 charge initiation, charhing unit 10 charges to battery pack 200 with the first current threshold I1 that presets, the size of the charging current I that control unit 50 detects according to current detecting unit 30, dynamic adjustments is carried out to charhing unit 10, described first current threshold I1(is remained on as shown in Figure 2 to make the value of charging current I), that is, charhing unit 10 pairs of battery pack 200 carry out constant current charge.When the voltage V of wherein any one cell core 210 reaches a predeterminated voltage threshold values V1, control unit 50 controls the charging current I that charhing unit 10 dynamic adjustments exports battery pack 200 to, this threshold voltage V1(is maintained as shown in Figure 2) to make the voltage V of this cell core 210, namely, constant voltage charge, until the second current threshold I2 that the value of charging current I is preset lower than, now control unit 50 control switch unit 20 cut off the charge path of battery pack 200, stop charging.
Refer to Fig. 3, the batteries charging control method of better embodiment of the present invention comprises the steps:
Step S1: the first current threshold I1 preset with when charge initiation carries out constant current charge to battery pack 200;
Step S2: constant voltage charge is carried out to battery pack 200 when the voltage V of any one cell core 210 of battery pack 200 reaches default threshold voltage V1, wherein said constant voltage charge refers to that carrying out dynamic adjustments to the charging current I of battery pack 200 makes the aforementioned voltage V reaching the cell core 210 of threshold voltage V1 maintain described threshold voltage V1;
Step S3: when described charging current I stops charging lower than during the second current threshold I2 preset.
Described batteries charging control device and method are when the voltage V of any one cell core 200 reaches threshold voltage V1, then to battery pack 210 with the described cell core 210 reaching threshold voltage V1 for benchmark carries out constant voltage charge, so can ensure that each cell core 210 of battery pack 200 overvoltage can not occur, avoid owing to producing superpotential situation because internal resistance is different in charging process between each cell core 210.
Claims (3)
1. a batteries charging control device, for charging to a battery pack, described battery pack comprises the cell core of multiple mutual series connection, it is characterized in that: described batteries charging control device comprises control unit, charhing unit, current detecting unit and multiple voltage detector, described charhing unit is electrically connected to described battery pack, carries out constant current charge for the first current threshold preset with when charge initiation to battery pack; Described current detecting unit is electrically connected between described battery pack and described charhing unit, for detecting the charging current of described battery pack in real time; Each voltage detector is electrically connected to the two ends of one of them cell core, for detecting the voltage of corresponding cell core in real time; Described control unit is electrically connected to described charhing unit, current detecting unit and each voltage detector, described control unit be used for the voltage of any one cell core of battery pack reach one preset threshold voltage time control charhing unit constant voltage charge is carried out to battery pack, and described charging current lower than one preset the second current threshold time control charhing unit stop charging; Wherein said constant voltage charge refers to that described charhing unit carries out dynamic adjustments to charging current and makes the aforementioned voltage reaching the cell core of threshold voltage maintain described threshold voltage.
2. battery charge controller as claimed in claim 1, it is characterized in that: described batteries charging control device also comprises the switch element being electrically connected to described control unit, described switch element is electrically connected between described battery pack and described charhing unit, described controller described charging current lower than one preset the second current threshold time the electric connection that controls switch unit between described battery pack and described switch element.
3. a batteries charging control method, control for carrying out charging to a battery pack, described battery pack comprises the cell core of multiple mutual series connection, and it is characterized in that, the method comprises the steps:
The first current threshold preset with one when charge initiation carries out constant current charge to battery pack;
Carry out constant voltage charge when the voltage of any one cell core of battery pack reaches default threshold voltage to battery pack, wherein said constant voltage charge refers to that carrying out dynamic adjustments to the charging current of battery pack makes the aforementioned voltage reaching the cell core of threshold voltage maintain described threshold voltage; And
When described charging current stops charging lower than during the second current threshold preset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410044480.1A CN104836261A (en) | 2014-02-07 | 2014-02-07 | Battery pack charging control method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410044480.1A CN104836261A (en) | 2014-02-07 | 2014-02-07 | Battery pack charging control method and apparatus |
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| CN104836261A true CN104836261A (en) | 2015-08-12 |
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| CN201410044480.1A Withdrawn CN104836261A (en) | 2014-02-07 | 2014-02-07 | Battery pack charging control method and apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532833A (en) * | 2016-12-01 | 2017-03-22 | 杭州联络互动信息科技股份有限公司 | Charging control method and intelligent wiring board |
| WO2018006775A1 (en) * | 2016-07-08 | 2018-01-11 | 常州聚为智能科技有限公司 | Balanced charging circuit of serial batteries and apparatus thereof |
| WO2019033629A1 (en) * | 2017-08-17 | 2019-02-21 | 常州市派腾电子技术服务有限公司 | Charging control circuit, battery device, and electronic cigarette |
| CN110518659A (en) * | 2019-08-09 | 2019-11-29 | 广州雷利诺车业有限公司 | A kind of electric motor car with two wheels charger control method and electric motor car with two wheels charger |
| CN110832668A (en) * | 2017-07-24 | 2020-02-21 | 工机控股株式会社 | Battery pack and electric device using the same |
| WO2023108540A1 (en) * | 2021-12-16 | 2023-06-22 | 宁德时代新能源科技股份有限公司 | Voltage measurement circuit and method, and circuit board and control module |
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| TW201015814A (en) * | 2008-10-09 | 2010-04-16 | Celxpert Energy Corp | Charging system for rechargeable lithium battery |
| CN101908775A (en) * | 2010-08-13 | 2010-12-08 | 烟台东方电子玉麟电气有限公司 | Charging control method and system of lithium ion battery pack |
| CN102064571A (en) * | 2009-11-11 | 2011-05-18 | 三洋电机株式会社 | Available charging/discharging current calculation method of battery, power supply device and vehicle with the power supply device |
| CN102326313A (en) * | 2009-06-18 | 2012-01-18 | 松下电器产业株式会社 | Charging control circuit, battery pack and charging system |
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2014
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| TW201015814A (en) * | 2008-10-09 | 2010-04-16 | Celxpert Energy Corp | Charging system for rechargeable lithium battery |
| CN102326313A (en) * | 2009-06-18 | 2012-01-18 | 松下电器产业株式会社 | Charging control circuit, battery pack and charging system |
| CN102064571A (en) * | 2009-11-11 | 2011-05-18 | 三洋电机株式会社 | Available charging/discharging current calculation method of battery, power supply device and vehicle with the power supply device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006775A1 (en) * | 2016-07-08 | 2018-01-11 | 常州聚为智能科技有限公司 | Balanced charging circuit of serial batteries and apparatus thereof |
| CN106532833A (en) * | 2016-12-01 | 2017-03-22 | 杭州联络互动信息科技股份有限公司 | Charging control method and intelligent wiring board |
| CN110832668A (en) * | 2017-07-24 | 2020-02-21 | 工机控股株式会社 | Battery pack and electric device using the same |
| US11710860B2 (en) | 2017-07-24 | 2023-07-25 | Koki Holdings Co., Ltd. | Battery pack and electrical apparatus using battery pack |
| WO2019033629A1 (en) * | 2017-08-17 | 2019-02-21 | 常州市派腾电子技术服务有限公司 | Charging control circuit, battery device, and electronic cigarette |
| CN110518659A (en) * | 2019-08-09 | 2019-11-29 | 广州雷利诺车业有限公司 | A kind of electric motor car with two wheels charger control method and electric motor car with two wheels charger |
| WO2023108540A1 (en) * | 2021-12-16 | 2023-06-22 | 宁德时代新能源科技股份有限公司 | Voltage measurement circuit and method, and circuit board and control module |
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