CN103178305A - Smart battery - Google Patents
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- CN103178305A CN103178305A CN2011104302647A CN201110430264A CN103178305A CN 103178305 A CN103178305 A CN 103178305A CN 2011104302647 A CN2011104302647 A CN 2011104302647A CN 201110430264 A CN201110430264 A CN 201110430264A CN 103178305 A CN103178305 A CN 103178305A
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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
The invention relates to a smart battery system, belonging to the technical field of power batteries of electromobiles. The smart battery comprises a controller and at least one smart battery modules, wherein the intelligent battery module comprises at least one battery and a circuit system; the circuit system has an analog signal acquisition function, can be used for converting analog signals into digital signals and is communicated with the controller; the circuit system and the smart battery module are integrally packaged; and the smart battery is in communicated connection with the controller. The smart battery disclosed by the utility model has the advantages of compact assembly space, fewer lead wires to be measured, connection reliability and high anti-jamming property of signal acquisition.
Description
Technical field
The present invention relates to the battery management field, the particularly management of the electrokinetic cell of electric automobile, be specifically related to a kind of smart battery system that voltage and temperature acquisition, SOC estimate the intelligent controller of (State of charge, battery charging state is battery dump energy), the function such as battery balanced that has.
Background technology
Power battery pack is the core component of electric automobile, provides electric energy to drive Vehicle Driving Cycle.Because the electrokinetic cell that uses in vehicle generally needs higher voltage levvl, so tens to up to a hundred battery cells need to be in series.For safe handling, the raising battery life that ensures battery, need a cover battery management system that battery cell is carried out state-detection, safeguard protection and discharges and recharges control.In addition, generally also need battery cell is carried out equilibrium, thereby the charging and discharging currents of namely controlling each battery cell by the bypass shunt loop is set is consistent the voltage of each battery cell.
In order to realize above-mentioned functions, more general way mainly contains two kinds at present, and the first is that the both positive and negative polarity of all batteries is all linked testing circuit by wire, also needs from a part of battery cell mounting temperature sensor and connects the measuring-signal wire.Batteries of electric automobile group is generally by at least about 100 batteries monomer compositions, and the wire of the measuring-signal of whole like this battery pack needs approximately more than 200.In order to reduce conductor length and to improve system reliability, more employing second methods, i.e. distributed frame.Distributed battery management system comprises a Central Control Module and several distributed signal processing module.The distributed signal processing module connects its measuring-signal wire of several battery cells on every side, by bus, information is sent to Central Control Module after processing through signal.Although this distributed battery management system has reduced conductor length, but still need to battery cell be connected with the distributed signal processing module by wire, still have a large amount of wires in battery pack.And measure traverse line is connected with battery electrode column by bolt often, has increased the complexity of working in groups, and has more incipient fault point.
Above two kinds of methods also need fairly large circuitry for signal measurement except using a large amount of wires, and this has also increased battery complexity, R﹠D costs and production cost in groups.And analog signal is connected to measuring circuit by long wire, causes signal more responsive to electromagnetic interference, affects certainty of measurement and even causes measuring error.
On the other hand, battery manufacturer in groups needs a cover algorithm to realize some functions, such as: estimate that by measurement result battery electric quantity, Limited Current guarantee the safe handling of battery etc.But the data of estimating electric weight and the limit value foundation being set battery manufacture manufacturer often are the clearest, rather than battery manufacturer in groups.Experiment and the test performance data of having grasped battery of battery manufacture manufacturer by repeatedly, although battery manufacture manufacturer can to battery in groups manufacturer these information is provided, these information can complete reception and registration and by enough attention usually.
Summary of the invention
For reducing the anti-interference of assembly space and raising signals collecting, the invention provides a kind of smart battery system.
The technical solution adopted for the present invention to solve the technical problems is: this smart battery system comprises controller and at least one Smart battery module, this Smart battery module comprise at least one batteries and one have the collection of simulant signal function and can be with analog signal conversion digital signal and and the Circuits System that communicates of controller, described Circuits System and Smart battery module integral packaging, Smart battery module and controller communication connection.Due to Circuits System and Smart battery module integral packaging, so spatially be close to, be fastened to each other at fit on, reduced assembly space, improved the anti-interference of signals collecting.
Further, Smart battery module adopts following manner with the communication connection of controller: the communication between a plurality of Smart battery modules adopts chain type to be connected, namely a Smart battery module connects with the Smart battery module of being connected before with being connected, conspire to create a chain, data are propagated on above-mentioned chain, pass at last controller, thus the wiring quantity in the battery case after effectively reducing in groups.
Further, following manner is adopted in the communication connection of Smart battery module and controller: a plurality of Smart battery modules are received on same bus by communication interface separately, and bus is connected with controller; Wiring quantity in battery case after can effectively reducing in groups equally.
Further, in Smart battery module, be provided with temperature sensor, temperature sensor is wired to Circuits System, and Circuits System is obtained the temperature information of Smart battery module by the output valve of collecting temperature transducer.
Further, every batteries all is provided with equalizing circuit, is controlled the switch of equalizing circuit by Circuits System, controls every joint cell balanced separately.
Further, described Circuits System is application-specific integrated circuit (ASIC) or the programmable system for being comprised of discrete component and microprocessor, so that Cost reduction and make battery manufacturers can participate in battery control system design.
Further, be provided with display unit, show the state of battery.
Further, the Content of Communication between Smart battery module and controller comprises cell voltage, battery dump energy, battery temperature and or battery status.
Further, controller is according to the Content of Communication control switch, and described switch is controlled the break-make of battery and exterior terminal, so that the assurance battery does not overcharge but puts.
Further, described smart battery system is used for electric automobile, electric bicycle or mobile device, uses thereby make described smart battery system adapt to diversification.
The good effect of this smart battery system is as follows:
The first, simplify the method for attachment between battery cell and battery management system, reduce required measure traverse line quantity, improve connection reliability; The second, spatially carry out the analog signals such as voltage, temperature to the conversion of digital signal from battery nearest position, improve the anti-interference of signals collecting; The 3rd, by programmable smart battery system, allow battery manufacturers participate in the battery control system design.
Description of drawings
Fig. 1 is battery module internal structure schematic diagram;
Fig. 2 is a kind of interconnection mode schematic diagram of multiple batteries module;
Fig. 3 is the another kind of interconnection mode schematic diagram of multiple batteries module;
Fig. 4 is the smart battery system schematic diagram that shows with the outside;
In figure, mark is as follows: the 10-order wire; The 11-battery module; The 12-Circuits System; 13-the first wire; The 14-battery; 15-the second wire; The 16-privates; The 17-privates; 18-the first switch; The 19-battery module is anodal; 20-battery module negative pole; 21-the 5th wire; 22-resistance; The 23-second switch; The 24-temperature sensor; The 50-controller; The 51-communication interface; 54-the 3rd switch; The 55-motor; The 71-communication bus; The 80-display unit.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described.
As shown in Figure 1, a Smart battery module 11 comprises at least one batteries 14, the Circuits System 12 with collection of simulant signal function and communication function.Need to prove, above-mentioned battery 14 not necessarily is used for the electrokinetic cell of electric automobile, such as being also the electrokinetic cell of electric bicycle or the battery of mobile device.Same Circuits System 12 can be also any Circuits System, such as being PCB (the Printed Circuit Board) system that application-specific integrated circuit (ASIC) (ASIC:Application Specific Integrated Circuit) or discrete component and microprocessor form.For the convenience of explaining, suppose that battery 14 is power battery of electric vehicle, Circuits System 12 is ASIC.Taking cost into account, in the situation that produce in enormous quantities, ASIC Circuits System 12 several dollars of costs at most, the price of electric automobile power battery generally tens of to 100 dollars, this invention is suitable on electric automobile power battery.Also need to prove, Circuits System 12 can be in the inside of the shell of Smart battery module 11, also can be in the outside of the shell of Smart battery module 11, and importantly Circuits System 12 and Smart battery module 11 are one, spatially being close to, is fastened to each other at fit on.
In Smart battery module 11, the both positive and negative polarity of battery 14 is connected on ASIC 12 by the first wire 13 and the second wire 15 respectively.ASIC 12 can be powered by the first wire 13 and the second wire 15 by battery 14, also can be by externally fed (circuit by externally fed does not draw in Fig. 1).ASIC12 gathers the voltage of battery by the first wire 13 and the second wire 15, and can be translated into digital quantity.
The positive pole 19 of Smart battery module and negative pole 20 can directly be linked the both positive and negative polarity of battery 14, also can be connected to each other by the first switch 18 in Fig. 1.Need to prove, the first switch 18 can be any switch, such as being high-power FET.The first switch 18 can conducting or is cut off the charging and discharging circuit of battery 14, and the signal of controlling the first switch 18 is sent by ASIC 12, controls by 16 pairs of the first switches 18 of privates.The B of the first switch 18 holds simultaneously, and namely the negative pole 20 of Smart battery module, be connected to ASIC 12 by privates 17.ASIC 12 is by the voltage between measure traverse line 15 and wire 17, and knows in the situation of conducting resistance of the first switch 18, can calculate the size and Orientation of the electric current that flows through battery 14.
In Smart battery module 11, a temperature sensor 24 can be arranged, it can be wired on ASIC 12, and ASIC 12 obtains the temperature information of Smart battery module by the output valve of collecting temperature transducer.Temperature sensor 24 also can be integrated in ASIC 12.
In Smart battery module 11, can there be one to be used for battery balanced module, need to prove, balanced method can be any method, can be for example dissipative type.Resistance 22 in Fig. 1 and second switch 23 can be realized a kind of battery balanced method of dissipative type.ASIC 12 can send to the outside by order wire 10 with the battery information (voltage, temperature) that gathers, certain controller by the outside is analyzed the information that a plurality of Smart battery modules send, the signal that the equilibrium that analysis is drawn is controlled returns to the ASIC 12 in Smart battery module 11, then controls realize equilibrium by the 5th wire 21 to second switch 23 by ASIC 12.Also the control end C of second switch 23 directly can be drawn out to the outside of Smart battery module by wire, directly be controlled by the balanced control signal of outside.Can be also that ASIC 12 receives by order wire 10 information that other Smart battery modules send, analyze these information and come autonomous decision whether will carry out equilibrium, then control second switch 23 by the 5th wire 21 and carry out equilibrium.A Smart battery module 11 also can comprise more piece cell 14, and these batteries can be connected also can be in parallel, and ASIC 12 can be powered jointly by these batteries 14.Every batteries 14 has one group of foregoing balance module, controls equalizer switch by ASIC 12, controls every joint cell 14 balanced separately.
General battery production manufacturer can by measuring the data of expression battery behavior, may be for example a battery discharge characteristic curve (battery open circuit voltage is with the variation of electric weight size).These data can be stored in the ROM in ASIC 12, ASIC can by information such as these data and the cell voltage that collects, temperature, draw the SOC information of current battery.SOC information can represent with percentage, also can represent with the ampere-hour number.ASIC 12 also can be by information such as the data of storing in ROM and the cell voltage that collects, electric currents; judge whether battery operated state is normal; ASIC 12 can send by order wire 10 above-mentioned state information to the outside; also can determine according to state information the break-make of the first switch 18, with protection battery 14.
Because the electrokinetic cell that uses in vehicle generally needs higher voltage levvl, so tens to up to a hundred battery cells need to be in series.As shown in Figure 2, more piece Smart battery module 11 is connected, and is connected to the two ends of motor 55 by the 3rd a controlled switch 54.Adjacent two batteries communicate by communication interface 51, the information exchange of final all batteries is crossed certain the joint Smart battery module 11 that is connected with controller 50 and is delivered to controller 50, controller is by the analysis to battery data, make corresponding control, the control information meeting is delivered to by the communication interface 51 that connects each batteries and respectively saves Smart battery module 11.Can be also that Content of Communication is controlled the 3rd switch 54 according to battery information with Time Controller 50, the principle of foundation be the safety that guarantees battery pack and external equipment.
As shown in Figure 3, the multiple batteries group also can connect in another way.The communication interface 51 of every joint Smart battery module 11 is connected on communication bus 71, and communication bus 71 is connected with controller 50.Every joint Smart battery module 11 sends to battery information on communication bus 71, and controller 50 reads battery information from bus, judges and controls, and control information is sent on communication bus 71, then read and responded by each joint Smart battery module.Also can control the 3rd switch 54 according to battery information with Time Controller 50, the principle of foundation is the safety that guarantees battery pack and external equipment.Wiring quantity in battery case after method of attachment in Fig. 2 and Fig. 3 can effectively reduce in groups.
As shown in Figure 4, the outer surface of Smart battery module can have a display unit 80, is used for showing the information of battery such as dump energy, temperature, internal switch state etc.Display unit 80 is controlled by the Circuits System 12 of Smart battery module inside.The main benefit of display unit 80 is after a lot of joint Smart battery modules are a battery pack in groups, display unit 80 allows the people understand easily situation and the equilibrium situation of each batteries, when battery pack broke down, display unit 80 allowed the people can investigate easily abort situation.
Claims (10)
1. smart battery system, this smart battery system comprises controller and at least one Smart battery module, this Smart battery module comprise at least one batteries and one have the collection of simulant signal function and can be with analog signal conversion digital signal and and the Circuits System that communicates of controller, it is characterized in that: described Circuits System and Smart battery module integral packaging, Smart battery module and controller communication connection.
2. a kind of smart battery system according to claim 1, it is characterized in that: the communication between a plurality of Smart battery modules adopts chain type to connect, namely a Smart battery module connects with the Smart battery module of being connected before with being connected, conspire to create a chain, data are propagated on above-mentioned chain, pass at last controller.
3. a kind of smart battery system according to claim 1, it is characterized in that: a plurality of Smart battery modules are received on same bus by communication interface separately, and bus is connected with controller.
4. a kind of smart battery system according to claim 1, it is characterized in that: in Smart battery module, be provided with temperature sensor, temperature sensor is wired to Circuits System, and Circuits System is obtained the temperature information of Smart battery module by the output valve of collecting temperature transducer.
5. a kind of smart battery system according to claim 1, is characterized in that: all be provided with equalizing circuit for every batteries in Smart battery module, controlled the switch of equalizing circuit by Circuits System, control every batteries balanced separately.
6. a kind of smart battery system according to claim 1 is characterized in that: described Circuits System is application-specific integrated circuit (ASIC) or the programmable system for being comprised of discrete component and microprocessor.
7. a kind of smart battery system according to claim 1, it is characterized in that: this smart battery system is provided with display unit.
8. a kind of smart battery system described according to above-mentioned any one claim, it is characterized in that: the Content of Communication between Smart battery module and controller comprises cell voltage, battery dump energy, battery temperature and or battery status.
9. a kind of smart battery system according to claim 8 is characterized in that: controller is according to the Content of Communication control switch, and described switch is controlled the break-make of battery and exterior terminal.
10. a kind of smart battery system described according to above-mentioned any one claim is characterized in that: described smart battery system is used for electric automobile, electric bicycle or mobile device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430264.7A CN103178305B (en) | 2011-12-21 | 2011-12-21 | Intelligent battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430264.7A CN103178305B (en) | 2011-12-21 | 2011-12-21 | Intelligent battery |
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| Publication Number | Publication Date |
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| CN103178305A true CN103178305A (en) | 2013-06-26 |
| CN103178305B CN103178305B (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110430264.7A Active CN103178305B (en) | 2011-12-21 | 2011-12-21 | Intelligent battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098910A (en) * | 2015-08-11 | 2015-11-25 | 郑永春 | Intelligent lithium battery and distributed management system thereof |
| CN105280971A (en) * | 2014-07-15 | 2016-01-27 | 拉碧斯半导体株式会社 | Semiconductor device, battery monitoring system, and method of monitoring battery |
| CN107925132A (en) * | 2015-09-25 | 2018-04-17 | 英特尔公司 | Intelligent battery with integrated sensing and electronic device |
| CN113258147A (en) * | 2021-03-30 | 2021-08-13 | 清华大学 | Intelligent battery |
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| JP2002243771A (en) * | 2001-02-15 | 2002-08-28 | Seiko Instruments Inc | Battery voltage detecting circuit |
| CN201752026U (en) * | 2010-07-12 | 2011-02-23 | 北京科易动力科技有限公司 | Battery pack and electrocar provided with same |
| CN102114788A (en) * | 2010-12-28 | 2011-07-06 | 吴江合美新能源科技有限公司 | Power integrated digital management system for electric vehicle |
| CN102231550A (en) * | 2011-07-05 | 2011-11-02 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN202564498U (en) * | 2011-12-21 | 2012-11-28 | 北京科易动力科技有限公司 | Smart battery |
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2011
- 2011-12-21 CN CN201110430264.7A patent/CN103178305B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002243771A (en) * | 2001-02-15 | 2002-08-28 | Seiko Instruments Inc | Battery voltage detecting circuit |
| CN201752026U (en) * | 2010-07-12 | 2011-02-23 | 北京科易动力科技有限公司 | Battery pack and electrocar provided with same |
| CN102114788A (en) * | 2010-12-28 | 2011-07-06 | 吴江合美新能源科技有限公司 | Power integrated digital management system for electric vehicle |
| CN102231550A (en) * | 2011-07-05 | 2011-11-02 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN202564498U (en) * | 2011-12-21 | 2012-11-28 | 北京科易动力科技有限公司 | Smart battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280971A (en) * | 2014-07-15 | 2016-01-27 | 拉碧斯半导体株式会社 | Semiconductor device, battery monitoring system, and method of monitoring battery |
| CN105280971B (en) * | 2014-07-15 | 2019-08-13 | 拉碧斯半导体株式会社 | Semiconductor device, battery monitoring system and battery monitoring methods |
| CN105098910A (en) * | 2015-08-11 | 2015-11-25 | 郑永春 | Intelligent lithium battery and distributed management system thereof |
| CN107925132A (en) * | 2015-09-25 | 2018-04-17 | 英特尔公司 | Intelligent battery with integrated sensing and electronic device |
| CN113258147A (en) * | 2021-03-30 | 2021-08-13 | 清华大学 | Intelligent battery |
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| Publication number | Publication date |
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| CN103178305B (en) | 2016-07-13 |
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