CN105826989A - Intelligently controlled and balanced battery management system - Google Patents
Intelligently controlled and balanced battery management system Download PDFInfo
- Publication number
- CN105826989A CN105826989A CN201610379661.9A CN201610379661A CN105826989A CN 105826989 A CN105826989 A CN 105826989A CN 201610379661 A CN201610379661 A CN 201610379661A CN 105826989 A CN105826989 A CN 105826989A
- Authority
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- China
- Prior art keywords
- unit
- battery
- management system
- internal resistance
- mcu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000004804 winding Methods 0.000 abstract 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- 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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H02J7/0022—
Abstract
The invention relates to an intelligently controlled and balanced battery management system which comprises a lithium battery pack, a power supply bus, an MCU, a slave control box acquisition unit, a balanced current acquisition unit, a multi-winding charging unit, an internal resistance monitoring unit and an electronic switch unit; the slave control box acquisition unit, the balanced current acquisition unit and the internal resistance monitoring unit are connected with the MCU, the lithium battery pack is connected with the multi-winding charging unit through the electronic switch unit, and the lithium battery pack is connected with the multi-winding charging unit through the power supply bus .According to the intelligently controlled and balanced battery management system, the separate MCU is adopted to communicate with the slave control box acquisition unit of the battery management system, voltage information sent by the slave control box acquisition unit is received and balanced, meanwhile the internal resistance monitoring unit is utilized to acquire direct current internal resistance of each segment of battery cell, charging is conducted according to the balanced current output by the battery internal resistance, the battery internal resistance is monitored in real time, and the service life of a battery is prolonged; balance can be conducted according to battery performance, and reliable data are provided for the service life predication and the power ratio of the battery pack.
Description
Technical field
The present invention relates to battery management system, specifically refer to the battery management system of a kind of Based Intelligent Control equilibrium.
Background technology
Energy crisis and environmental pollution become two hang-ups affecting social development already, and world all solves this two hang-up being devoted to.Under the people of other countries constantly appeal the background of " low-carbon (LC) life ", new forms of energy start in occupation of increasingly consequence, and lithium battery, as a part for new forms of energy, has obtained unprecedented development.The development of electric automobile the most in recent years, more pushes a new climax to by the application of lithium battery.Government and enterprise continue to increase the input to ev industry, the independent research and development capacity of highly desirable lifting China electric automobile, and battery management system restricts the key factor of its development just.
Generally speaking, battery management system must detect set of cells (batterypack) voltage of each battery (batterycell) in this set of cells when charge or discharge respectively, to determine whether that each battery is the most normal, wherein the multiple battery in set of cells are to be connected with serial arrangement.But, the battery management system of market seldom can consider the equilibrium of battery, it is all passive equilibrium that some producer equalizes, and reaches portfolio effect by conductive discharge, and existing battery balanced control method majority to be the height according to monomer battery voltage carry out judging to control energy transfer.It is known that, cell voltage can not reflect the battery that battery not necessarily electricity that battery dump energy, such as voltage are high is most exactly, then carry out electric quantity balancing by simple voltage determination methods, likely aggravate the unbalanced of battery electric quantity, thus reduce the service life of set of cells.And not accounting for battery in use, voltage output is inconsistent, causes battery to be scrapped in advance.
Summary of the invention
It is an object of the invention to overcome weak point of the prior art, it is provided that a kind of can carry out equalizing according to the performance of battery, monitor the internal resistance of cell in real time, improve the battery management system of the Based Intelligent Control equilibrium in the service life of battery.
It is an object of the invention to be achieved through the following technical solutions:
A kind of battery management system of Based Intelligent Control equilibrium, including lithium battery group, power bus, MCU, from control box collecting unit, euqalizing current collecting unit, Multiple coil charhing unit, internal resistance monitoring unit and electronic switch unit, described it is connected with MCU respectively from control box collecting unit, euqalizing current collecting unit, internal resistance monitoring unit, described lithium battery group is connected with Multiple coil charhing unit through electronic switch unit, and described lithium battery group is connected with Multiple coil charhing unit by power bus.
As a modification of the present invention, the battery management system of described Based Intelligent Control equilibrium also includes booster circuit, super capacitor and voltage/current collecting unit, the input of described booster circuit is connected with lithium battery group, the outfan of booster circuit is connected with super capacitor by power bus, and described super capacitor is connected with MCU through voltage/current collecting unit.
Concrete, described MCU controls bus by RS-232/485 and is connected with from control box collecting unit.
Concrete, described MCU is provided with multiple.
The present invention has the following advantages and beneficial effect compared to existing technology:
What 1, the present invention used independent MCU and battery management system carries out communication from control box collecting unit, receive the information of voltage issued from control box collecting unit to equalize, often economize on electricity also by internal resistance monitoring unit collection the DC internal resistance of core simultaneously, charge according to internal resistance of cell output euqalizing current, monitor the internal resistance of cell in real time, improve the service life of battery；When battery is in discharge process, when certain batteries is less than the average voltage of this set of cells, starts Multiple coil charhing unit and charge to low battery, reach this group magnitude of voltage and just stop charging；And monitored euqalizing current in real time by euqalizing current collecting unit; calculate battery is charged into how many capacity; can equalize according to the performance of battery; biometry and power for set of cells are than providing infallible data; improve electric automobile once to charge distance travelled; protection lithium battery group, extends lithium battery group service life, and then improves electric automobile whole power performance.
2, by booster circuit and super capacitor, when set of cells is in charging process, certain economize on electricity core is higher than when arranging threshold voltage, start booster circuit, inside feedback lithium battery group and super capacitor, the most also start Multiple coil charhing unit, low battery core is made to be charged, until the voltage reaching threshold value just stops charging, reliability is high, it is possible to effectively promote electric quantity balancing effect.
3, the present invention uses the electronic switch unit of Based Intelligent Control, it is achieved multichannel equalizes and multichannel boosting feedback simultaneously.
4, the present invention uses 485/232 mode communication, with from control box collecting unit real-time communication, does not interferes with the voltage acquisition from control box collecting unit.
5, multiple MCU that can use of the present invention controls, and reduces the running memory of each collecting unit, reduces MCU power consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
Such as Fig. 1, the present embodiment provides the battery management system of a kind of Based Intelligent Control equilibrium, including lithium battery group, power bus, MCU, from control box collecting unit, euqalizing current collecting unit, Multiple coil charhing unit, internal resistance monitoring unit and electronic switch unit, described it is connected with MCU respectively from control box collecting unit, euqalizing current collecting unit, internal resistance monitoring unit, described lithium battery group is connected with Multiple coil charhing unit through electronic switch unit, and described lithium battery group is connected with Multiple coil charhing unit by power bus.What the present invention used independent MCU and battery management system carries out communication from control box collecting unit, receive the information of voltage issued from control box collecting unit to equalize, often economize on electricity also by internal resistance monitoring unit collection the DC internal resistance of core simultaneously, charge according to internal resistance of cell output euqalizing current, monitor the internal resistance of cell in real time, improve the service life of battery；When battery is in discharge process, when certain batteries is less than the average voltage of this set of cells, starts Multiple coil charhing unit and charge to low battery, reach this group magnitude of voltage and just stop charging；And monitored euqalizing current in real time by euqalizing current collecting unit; calculate battery is charged into how many capacity; can equalize according to the performance of battery; biometry and power for set of cells are than providing infallible data; improve electric automobile once to charge distance travelled; protection lithium battery group, extends lithium battery group service life, and then improves electric automobile whole power performance.
The present invention uses the electronic switch unit of Based Intelligent Control, it is achieved multichannel equalizes and multichannel boosting feedback simultaneously.
The battery management system of described Based Intelligent Control equilibrium also includes booster circuit, super capacitor and voltage/current collecting unit, the input of described booster circuit is connected with lithium battery group, the outfan of booster circuit is connected with super capacitor by power bus, and described super capacitor is connected with MCU through voltage/current collecting unit.By booster circuit and super capacitor, when set of cells is in charging process, certain economize on electricity core is higher than when arranging threshold voltage, start booster circuit, inside feedback lithium battery group and super capacitor, the most also start Multiple coil charhing unit, low battery core is made to be charged, until the voltage reaching threshold value just stops charging, reliability is high, it is possible to effectively promote electric quantity balancing effect.
Described MCU controls bus by RS-232/485 and is connected with from control box collecting unit.Use 485/232 mode communication, with from control box collecting unit real-time communication, do not interfere with the voltage acquisition from control box collecting unit.
As a kind of embodiment, described MCU is provided with multiple.When using multiple MCU to control, reduce the running memory of each collecting unit, reduce MCU power consumption.
It is to be understood that; above-mentioned detailed description of the invention is only presently preferred embodiments of the present invention and institute's application technology principle; in technical scope disclosed in this invention; change that any those familiar with the art is made under spirit and the principle without departing from the present invention, modify, substitute, combine, simplify; all should be the substitute mode of equivalence, all should contain within the scope of the present invention.
Claims (4)
1. the battery management system of a Based Intelligent Control equilibrium, including lithium battery group, power bus, MCU, from control box collecting unit, euqalizing current collecting unit, Multiple coil charhing unit, internal resistance monitoring unit and electronic switch unit, described it is connected with MCU respectively from control box collecting unit, euqalizing current collecting unit, internal resistance monitoring unit, described lithium battery group is connected with Multiple coil charhing unit through electronic switch unit, and described lithium battery group is connected with Multiple coil charhing unit by power bus.
The battery management system of Based Intelligent Control the most according to claim 1 equilibrium, it is characterized in that: the battery management system of described Based Intelligent Control equilibrium also includes booster circuit, super capacitor and voltage/current collecting unit, the input of described booster circuit is connected with lithium battery group, the outfan of booster circuit is connected with super capacitor by power bus, and described super capacitor is connected with MCU through voltage/current collecting unit.
The battery management system of Based Intelligent Control the most according to claim 1 equilibrium, it is characterised in that: described MCU controls bus by RS-232/485 and is connected with from control box collecting unit.
The battery management system of Based Intelligent Control the most according to claim 1 equilibrium, it is characterised in that: described MCU is provided with multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379661.9A CN105826989A (en) | 2016-06-01 | 2016-06-01 | Intelligently controlled and balanced battery management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379661.9A CN105826989A (en) | 2016-06-01 | 2016-06-01 | Intelligently controlled and balanced battery management system |
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| Publication Number | Publication Date |
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| CN105826989A true CN105826989A (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610379661.9A Pending CN105826989A (en) | 2016-06-01 | 2016-06-01 | Intelligently controlled and balanced battery management system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291388A (en) * | 2016-10-11 | 2017-01-04 | 福建星海通信科技有限公司 | The remote monitoring method of a kind of lithium battery and system |
| CN109950951A (en) * | 2019-03-21 | 2019-06-28 | 江苏工程职业技术学院 | A kind of lithium battery balance control method and control system with super capacitor |
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|---|---|---|---|---|
| CN101282046A (en) * | 2008-05-07 | 2008-10-08 | 陈赖容 | Battery set management circuit |
| CN201956725U (en) * | 2011-03-18 | 2011-08-31 | 广东国光电子有限公司 | Equalizing device of power iron phosphate lithium battery pack |
| CN102545309A (en) * | 2011-11-10 | 2012-07-04 | 许春香 | Whole-course equalization method of chargeable battery system |
| CN203352148U (en) * | 2013-07-18 | 2013-12-18 | 中船重工鹏力（南京）新能源科技有限公司 | Lithium battery protection system |
| CN205693390U (en) * | 2016-06-01 | 2016-11-16 | 深圳市德兰明海科技有限公司 | A kind of battery management system of Based Intelligent Control equilibrium |
-
2016
- 2016-06-01 CN CN201610379661.9A patent/CN105826989A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282046A (en) * | 2008-05-07 | 2008-10-08 | 陈赖容 | Battery set management circuit |
| CN201956725U (en) * | 2011-03-18 | 2011-08-31 | 广东国光电子有限公司 | Equalizing device of power iron phosphate lithium battery pack |
| CN102545309A (en) * | 2011-11-10 | 2012-07-04 | 许春香 | Whole-course equalization method of chargeable battery system |
| CN203352148U (en) * | 2013-07-18 | 2013-12-18 | 中船重工鹏力（南京）新能源科技有限公司 | Lithium battery protection system |
| CN205693390U (en) * | 2016-06-01 | 2016-11-16 | 深圳市德兰明海科技有限公司 | A kind of battery management system of Based Intelligent Control equilibrium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291388A (en) * | 2016-10-11 | 2017-01-04 | 福建星海通信科技有限公司 | The remote monitoring method of a kind of lithium battery and system |
| CN109950951A (en) * | 2019-03-21 | 2019-06-28 | 江苏工程职业技术学院 | A kind of lithium battery balance control method and control system with super capacitor |
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Application publication date: 20160803 |