CN102709979A - Integrated autonomous control system for power battery - Google Patents
Integrated autonomous control system for power battery Download PDFInfo
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- CN102709979A CN102709979A CN2012101862321A CN201210186232A CN102709979A CN 102709979 A CN102709979 A CN 102709979A CN 2012101862321 A CN2012101862321 A CN 2012101862321A CN 201210186232 A CN201210186232 A CN 201210186232A CN 102709979 A CN102709979 A CN 102709979A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 22
- 230000000875 corresponding Effects 0.000 claims description 8
- 101700057905 NUPR1 Proteins 0.000 claims description 3
- 101710036782 RBBP8 Proteins 0.000 claims description 3
- 102100008299 RBBP8 Human genes 0.000 claims description 3
- 101710034882 ctp1 Proteins 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 101700049793 MCU Proteins 0.000 description 19
- 238000000034 method Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002035 prolonged Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910017436 S2 Can Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static Effects 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
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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
Abstract
The invention relates to an integrated autonomous control system for a power battery. The system comprises a micro control unit (MCU), wherein the signal output end of the MCU is connected with a lithium battery core array through a switching effector; the lithium battery core array is connected with the signal input end of the MCU through a voltage detection circuit; the switching effector is connected with a charging circuit and an output circuit through a main transformer array respectively; and a communication port of the MCU is connected with a monitor. The charging circuit is connected with a power supply to start charging, the voltage detection circuit detects the voltage of each single battery in the lithium battery core array in real time, and if the voltage of a certain single battery is abnormal, the system disconnects the single battery from a battery pack to prolong the service life of the battery pack. In addition, the monitor is used for feeding back the state of the battery pack in real time to facilitate maintenance and management.
Description
Technical field
The present invention relates to field of batteries, especially a kind of integrated electrokinetic cell self-control system.
Background technology
At present, several kinds of defectives below the conventional battery control system exists:
The first, the limited battery pack of only controlling the size, the battery pack of the electric power bus that uncontrollable hundreds of batteries is formed, electric power aircraft etc.;
The second, can only realize real-time monitoring, rest on the aspect of control battery, can't or be sent on other equipment storage, there are not functions such as wired instrument, wireless data sending, be not easy to maintenance and management;
The 3rd, can only preserve history and discharge and recharge record, but can't feed back battery status in real time, this just might cause, and electric power is cut off suddenly in the running car way, has potential safety hazard;
The 4th, owing to understand inconsistency in the lithium battery serial discharge process because of lithium battery, and the electric core of part in the fragile battery pack causes the lithium battery group to damage.
Summary of the invention
The object of the present invention is to provide a kind of be integrated in battery pack inside, compatible strong, be convenient to maintenance and management, can prolong the battery integrated electrokinetic cell self-control system in useful life.
For realizing above-mentioned purpose; The present invention has adopted following technical scheme: a kind of integrated electrokinetic cell self-control system; Comprise microcontroller MCU, its signal output part links to each other with the lithium battery electric core array through the transition effects device, and the lithium battery electric core array links to each other with the signal input part of microcontroller MCU through voltage detecting circuit; The transition effects device connects charging circuit, output circuit respectively through the main transformer array, and the COM1 of microcontroller MCU connects monitor.
Can know by technique scheme; Charging circuit among the present invention begins charging when inserting power supply; Voltage detecting circuit detects the voltage of each battery cell in the lithium battery electric core array in real time; If certain battery cell voltage takes place when unusual, being connected of this battery cell and battery pack will be broken off by system, with the useful life of prolongation battery pack.In addition, monitor is set the state of battery pack is carried out the real-time status feedback, be convenient to maintenance and management.In a word, the present invention has that equilibrium charging, series connection balanced discharge, fault detect in real time, the function of real-time status feedback, has prolonged the useful life of battery.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is the connecting circuit schematic diagram of transition effects device, lithium battery electric core array, voltage detecting circuit and microcontroller MCU.
Embodiment
A kind of integrated electrokinetic cell self-control system; Comprise microcontroller MCU 1; Its signal output part links to each other with lithium battery electric core array 2 through transition effects device 3, and lithium battery electric core array 2 links to each other with the signal input part of microcontroller MCU 1 through voltage detecting circuit 5, and transition effects device 3 connects charging circuit, output circuit respectively through the main transformer array; Described charging circuit connects the low pressure high current power supply; The COM1 of microcontroller MCU 1 connects monitor 4, and described monitor 4 adopts LCD display and/or alarm, and is as shown in Figure 1.If charging circuit inserts low-tension supply, then the main transformer array is still exported low pressure, otherwise if charging circuit inserts high voltage source, then main transformer array transformation is exported low pressure.
As shown in Figure 1, the signal output part of said microcontroller MCU 1 links to each other with the input of transition effects device 3, and the input/output terminal of transition effects device 3 links to each other with lithium battery electric core array 2; Said voltage detecting circuit 5 is made up of solid-state detection relay array and voltage sensor; Lithium battery electric core array 2 links to each other with the input of solid-state detection relay array; The output of solid-state detection relay array links to each other with the input of voltage sensor, and the output of voltage sensor links to each other with the signal input part of microcontroller MCU 1; The input/output terminal of said transition effects device 3 links to each other with the input/output terminal of main transformer array, and the output of main transformer array links to each other with output circuit, and the input of main transformer array links to each other with charging circuit.The effect of solid-state detection relay array is the voltage that poll is measured each battery cell in the lithium battery electric core array 2 accurately, is not the SOC electric weight estimation of conventional batteries.
As shown in Figure 1, the signal input part of said microcontroller MCU 1 links to each other the I of microcontroller MCU 1 with temperature sensor, current sensor and humidity sensors in being encapsulated in lithium battery electric core array 2
2C interface with link to each other from the lithium battery electric core array.The detected temperature of temperature sensor is if be higher than 40 ° of C, and when perhaps being lower than 5 ° of C, 4 prompting users are not suitable for charging through monitor; Perhaps, when the battery cell temperature is too high, directly cut off this battery cell.Electric current on the current sensor senses bus, promptly the electric current of output port if surpass user's set point, then passes through alarm equipment alarm.The detected humidity of humidity sensor directly shows on LCD display.
As shown in Figure 1; Described transition effects device 3 adopts the relay group; Each relay in the relay group and the corresponding connection of each battery cell in the lithium battery electric core array 2, transition effects device 3 is used for controlling the connected mode of lithium battery electric core array 2 battery cells.The information that temperature sensor, current sensor and humidity sensor collected can send in real time; And when being higher or lower than user's setting threshold, ambient temperature and humidity can significantly point out to the user; Be presented on the LCD display, or pass through alarm equipment alarm.
Native system is to be encapsulated in the inner intellectualized management system of battery pack; Itself and battery pack Highgrade integration; Information gathering through to each electric core of battery pack inside is also analyzed, and accomplishes Control work through transition effects device 2, reaches the purpose of Autonomous Control.
In discharge process; Voltage detecting circuit 5 will detect every battery cell; When perhaps voltage was higher unusually as if certain piece battery cell generation, microcontroller MCU 1 will break off being connected of these piece battery cells and battery pack through transition effects device 2, drops to the x% (x is a User Defined) of low voltage limit threshold value until assembled battery total voltage; After this can point out the user whether to continue to use if voltage drops to threshold limit, continue to use and to cause unpredictable consequence.
When the user inserts charge power supply, when promptly charging circuit inserts the low pressure high current power supply, can switch to charged state.In charging process, system switches to the parallel operation state with all battery cells, and between charge period, saturated battery can break off one by one in system, accomplishes until all battery cell chargings, just recovers the series connection output state.
System sends system mode through the information port in the course of the work, can insert the wireless data sending agreement, information is passed to monitor 4 or mobile device, and mobile device is to accomplish the parameter setting of system through corresponding software.
Microcontroller MCU 1 is by ATMEGA2560-16U (core processor is AVR) main control chip and the required peripheral circuit of minimum system, and the program of this MCU burning is in advance accomplished, and device parameter and operation policy store are in the register of main control chip; Can be changed by the user, its rated voltage is 5V, built-in pressurizer; Can be directly by battery-powered, power is minimum, and monolithic MCU can manage 69 battery cells at least; Can expand through the 74HC595 chip, also can pass through I
2C interface and from system docking makes controlled battery cell number not have the upper limit.And it can insert 16 groups of analog sensors, and 256 digital sensors, can change according to concrete application scheme.
M2# is the minimum system plate of microcontroller MCU 1 shown in Figure 2, is responsible for the central authorities' control to system, and M4# is the voltage sensor interface of microcontroller MCU 1, and M3# is the I2C interface of microcontroller MCU 1.S1 is a solid-state relay control winding displacement, and S2 is static two electric shock relay control winding displacement, and S1, S2 insert the I/O interface of microcontroller MCU 1 respectively.The whole double-contact relays that are connected with the S2 interface belong to transition effects device 3; The SSR that is connected with the S1 interface belongs to checkout equipment; Every batteries monomer links to each other with two SSR; The line of all SSR and corresponding battery cell with it and control interface is generically and collectively referred to as voltage detecting circuit 5, and Solid state relays abbreviation is called for short SSR, is solid-state relay; S2 is equivalent among Fig. 1, and the line between microcontroller MCU 1 and the transition effects device 3 only plays the effect of connection.
When system is in the charging process, microcontroller MCU 1 all exports high level for S2, makes each batteries monomer and total road break off, at this moment; The low-voltage, high-current of charging is linked into the two ends of each batteries monomer and charges, and meanwhile microcontroller MCU 1 is through the conducting to S1 corresponding port output LOW voltage control solid-state relay, and per two scan successively; For example: No. 1, No. 2 conductings, other disconnections are after measurement finishes; All break off, No. 3, No. 4 conductings are after measurement finishes; All break off, continue new round scanning, by that analogy.Thereby realize the accurate voltage of measuring each batteries monomer.After the charging of a certain batteries is accomplished, give corresponding S2 wiring input independent low level, make this battery tripping, and insert universal serial bus that after whole monomers chargings are accomplished, promptly accomplish charging operations, monitor shows the prompting that charging is accomplished.At this moment, each the batteries monomer in the battery pack all has been charged to saturated, avoids occurring the situation that some battery is overcharged or is not fully filled in the conventional batteries.
When system is in the discharge process, microcontroller MCU 1 gives the whole output low levels of S2, makes each batteries monomer serial insert total road, and meanwhile microcontroller MCU 1 controls the conducting of solid-state relay through giving S1 corresponding port output LOW voltage; Per two scannings successively, for example: No. 1, No. 2 conductings, other disconnections are after measurement finishes; All break off, No. 3, No. 4 conductings are after measurement finishes; All break off, continue new round scanning, by that analogy.When a certain batteries breaks down or voltage when being lower than threshold value, the corresponding port output high level of microcontroller MCU 1 control S2 can be seen through Fig. 2; When a certain batteries the time by tripping; Be the normal serial output that can not influence total road, just voltage descends to some extent, for the compact battery group to voltage request harsh can be through boosting or the mode of cut-in stand-by battery solves; Less demanding for large-sized battery pack to voltage drop, can ignore the influence that it brings.Thereby make A-battery not after putting, reach the purpose of extending battery life.
In sum; Charging circuit among the present invention begins charging when inserting power supply; Voltage detecting circuit 5 detects the voltage of each battery cell in the lithium battery electric core array 2 in real time; If when unusual or electric voltage exception took place certain battery cell, being connected of this battery cell and battery pack will be broken off by system, to prolong the useful life of battery pack.In addition, the state that 4 pairs of battery pack of monitor are set carries out the real-time status feedback, is convenient to maintenance and management.In a word, the present invention has that associating equilibrium charging, series connection balanced discharge, fault detect in real time, the function of real-time status feedback, has prolonged the useful life of battery.
Claims (6)
1. integrated electrokinetic cell self-control system; It is characterized in that: comprise microcontroller MCU (1); Its signal output part links to each other with lithium battery electric core array (2) through transition effects device (3); Lithium battery electric core array (2) links to each other with the signal input part of microcontroller MCU (1) through voltage detecting circuit (5), and transition effects device (3) connects charging circuit, output circuit respectively through the main transformer array, and the COM1 of microcontroller MCU (1) connects monitor (4).
2. integrated electrokinetic cell self-control system according to claim 1; It is characterized in that: the signal output part of said microcontroller MCU (1) links to each other with the input of transition effects device (3), and the input/output terminal of transition effects device (3) links to each other with lithium battery electric core array (2); Said voltage detecting circuit (5) is made up of solid-state detection relay array and voltage sensor; Lithium battery electric core array (2) links to each other with the input of solid-state detection relay array; The output of solid-state detection relay array links to each other with the input of voltage sensor, and the output of voltage sensor links to each other with the signal input part of microcontroller MCU (1); The input/output terminal of said transition effects device (3) links to each other with the input/output terminal of main transformer array, and the output of main transformer array links to each other with output circuit, and the input of main transformer array links to each other with charging circuit.
3. integrated electrokinetic cell self-control system according to claim 1, it is characterized in that: described charging circuit connects the low pressure high current power supply.
4. integrated electrokinetic cell self-control system according to claim 1 is characterized in that: described monitor (4) adopts LCD display and/or alarm.
5. integrated electrokinetic cell self-control system according to claim 1; It is characterized in that: the signal input part of said microcontroller MCU (1) temperature sensor, current sensor and the humidity sensor interior with being encapsulated in lithium battery electric core array (2) links to each other the I of microcontroller MCU (1)
2C interface with link to each other from the lithium battery electric core array.
6. integrated electrokinetic cell self-control system according to claim 2; It is characterized in that: described transition effects device (3) adopts the relay group, the corresponding connection of each battery cell in each relay in the relay group and the lithium battery electric core array (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210186232.1A CN102709979B (en) | 2012-06-07 | 2012-06-07 | Integrated autonomous control system for power battery |
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| CN201210186232.1A CN102709979B (en) | 2012-06-07 | 2012-06-07 | Integrated autonomous control system for power battery |
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| CN102709979A true CN102709979A (en) | 2012-10-03 |
| CN102709979B CN102709979B (en) | 2014-06-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852418A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Method and system preventing over-discharge of battery during charging process |
| CN107925132A (en) * | 2015-09-25 | 2018-04-17 | 英特尔公司 | Intelligent battery with integrated sensing and electronic device |
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| CN201210622Y (en) * | 2008-05-21 | 2009-03-18 | 惠州市蓝微电子有限公司 | Electric core charging and discharging control management circuit for lithium ion or polymer battery |
| CN102005797A (en) * | 2010-12-08 | 2011-04-06 | 夏正奎 | Active self-management charging device of lithium-ion power battery |
| CN202616843U (en) * | 2012-06-07 | 2012-12-19 | 朱泽州 | Autonomous integrated power battery control system |
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2012
- 2012-06-07 CN CN201210186232.1A patent/CN102709979B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| CN1747278A (en) * | 2005-10-21 | 2006-03-15 | 成都龙盾数码通信技术有限公司 | Circuit for controlling series battery charge and discharge |
| CN201210622Y (en) * | 2008-05-21 | 2009-03-18 | 惠州市蓝微电子有限公司 | Electric core charging and discharging control management circuit for lithium ion or polymer battery |
| CN102005797A (en) * | 2010-12-08 | 2011-04-06 | 夏正奎 | Active self-management charging device of lithium-ion power battery |
| CN202616843U (en) * | 2012-06-07 | 2012-12-19 | 朱泽州 | Autonomous integrated power battery control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852418A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Method and system preventing over-discharge of battery during charging process |
| CN104852418B (en) * | 2014-12-19 | 2017-12-08 | 北汽福田汽车股份有限公司 | It is a kind of to prevent from crossing the method and system put when battery charges |
| CN107925132A (en) * | 2015-09-25 | 2018-04-17 | 英特尔公司 | Intelligent battery with integrated sensing and electronic device |
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| CN102709979B (en) | 2014-06-25 |
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