CN103178305B - Intelligent battery - Google Patents
Intelligent battery Download PDFInfo
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- CN103178305B CN103178305B CN201110430264.7A CN201110430264A CN103178305B CN 103178305 B CN103178305 B CN 103178305B CN 201110430264 A CN201110430264 A CN 201110430264A CN 103178305 B CN103178305 B CN 103178305B
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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 present invention relates to a kind of smart battery system, belong to electric automobile power battery technical field, this intelligent battery includes controller and at least one Smart battery module, this Smart battery module include at least one batteries and one have collection of simulant signal function and can convert analog signals into 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.This intelligent battery assembly space is compact, and required measure traverse line quantity is few, and the anti-interference of connection reliability and signals collecting is high.
Description
Technical field
The present invention relates to field of battery management, the particularly management of the electrokinetic cell of electric automobile, it is specifically related to that one has voltage and temperature acquisition, SOC estimates the smart battery system of intelligent controller of (Stateofcharge, battery charging state and battery dump energy), the function such as battery balanced.
Background technology
Power battery pack is the core component of electric automobile, it is provided that electric energy travels driving vehicle.Due to the electrokinetic cell that uses in vehicle it is generally required to higher voltage levvl, so needing to be in series tens to up to a hundred pieces battery cells.In order to ensure the safe handling of battery, improve battery life, it is necessary to battery cell is carried out state-detection, safeguard protection and charge and discharge control by a set of battery management system.In addition, generally also need to battery cell is carried out equilibrium, namely control the charging and discharging currents of each battery cell so that the voltage of each battery cell keeps consistent by arranging bypass shunt loop.
In order to realize above-mentioned functions, relatively widespread practice mainly has two kinds at present, and the first is that all by wire, the both positive and negative polarity of all batteries is linked testing circuit, in addition it is also necessary to mounting temperature sensor connect measurement signal conductor from a part of battery cell.One batteries of electric automobile group is generally made up of at least about 100 batteries monomers, and the wire measuring signal of so whole set of cells needs more than about 200.In order to reduce conductor length and 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.Distributed signal processing module connects the measurement signal conductor of several battery cells about, sends information to Central Control Module by bus after signal processing.Although this distributed battery management system decreases conductor length, but still require over wire battery cell is connected with distributed signal processing module, in set of cells, still there is a large amount of wire.And measure traverse line is connected with battery electrode column often by bolt, adds the complexity that works in groups, and there is more incipient fault point.
Both the above method is except to use a large amount of wire, in addition it is also necessary to fairly large circuitry for signal measurement, which increases the groups of complexity of battery, R&D costs and production cost.And analogue signal is connected to measuring circuit by longer wire, cause signal that electromagnetic interference is more sensitive, affect certainty of measurement and even result in measuring error.
On the other hand, battery manufacturer in groups needs a set of algorithm to realize some functions, such as: estimate that battery electric quantity, restriction electric current ensure the safe handling etc. of battery by measurement result.But the data estimating electricity and arrange limit value foundation are often that battery manufacture manufacturer is the clearest, rather than battery manufacturer in groups.Battery manufacture manufacturer has grasped the performance data of battery by experiment repeatedly and test, although the cell manufacturer chamber of commerce provides these information to battery manufacturer in groups, but generally these information will not completely be passed on and by enough attention.
Summary of the invention
For reducing assembly space and improving the anti-interference of signals collecting, the present 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 includes controller and at least one Smart battery module, this Smart battery module include at least one batteries and one have collection of simulant signal function and can convert analog signals into 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 being spatially next-door neighbour, being fastened to each other at fit on, decreasing assembly space, improve the anti-interference of signals collecting.
Further, Smart battery module adopts following manner with the communication connection of controller: the communication between multiple Smart battery modules adopts chain type to be connected, namely a Smart battery module and the Smart battery module before and after him connect, conspire to create a chain, data are propagated on above-mentioned chain, finally pass to controller, thus the wiring quantity effectively reduced in the battery case after in groups.
Further, Smart battery module adopts following manner with the communication connection of controller: multiple Smart battery modules are received in same bus by respective communication interface, and bus and controller connect；The wiring quantity in battery case after equally possible effective minimizing in groups.
Further, in Smart battery module, being provided with temperature sensor, temperature sensor is wired to Circuits System, and Circuits System obtains the temperature information of Smart battery module by the output valve of collecting temperature sensor.
Further, every batteries is designed with equalizing circuit, Circuits System control the switch of equalizing circuit, controls often to save cell individually balanced.
Further, described Circuits System is special IC or the programmable system for being made up of discrete component and microprocessor, in order to reduces cost and makes battery manufacturers can participate in battery control system design.
Further, it is provided with display device, shows the state of battery.
Further, the Content of Communication between Smart battery module and controller includes cell voltage, battery dump energy, battery temperature and or battery status.
Further, controller controls switch, the break-make of described on-off control battery and exterior terminal according to Content of Communication, in order to guarantee battery does not overcharge, Bu Guofang.
Further, described smart battery system is for electric automobile, electric bicycle or mobile equipment, so that described smart battery system adapts to diversification application.
The good effect of this smart battery system is as follows:
First, simplify the method for attachment between battery cell and battery management system, reduce required measure traverse line quantity, improve connection reliability；Second, spatially carry out the conversion to digital signal of the analogue signal such as voltage, temperature from the position that battery is nearest, improve the anti-interference of signals collecting；3rd, by programmable smart battery system, allow battery manufacturers participate in battery control system design.
Accompanying drawing explanation
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 shown with outside；
In figure, labelling is as follows: 10-order wire；11-battery module；12-Circuits System；13-the first wire；14-battery；15-the second wire；16-privates；17-privates；18-first switchs；19-battery module positive pole；20-battery module negative pole；21-the 5th wire；22-resistance；23-second switch；24-temperature sensor；50-controller；51-communication interface；54-the 3rd switchs；55-motor；71-communication bus；80-display device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described.
As it is shown in figure 1, a Smart battery module 11 includes 14, Circuits System 12 with collection of simulant signal function and communication function of at least one batteries.It should be noted that above-mentioned battery 14 is not necessarily the electrokinetic cell for electric automobile, it can also be such as the battery of the electrokinetic cell of electric bicycle or mobile equipment.Same Circuits System 12 can also be any Circuits System, can be such as special IC (ASIC:ApplicationSpecificIntegratedCircuit) or PCB (PrintedCircuitBoard) system of discrete component and microprocessor composition.For the convenience stated, it is assumed that battery 14 is power battery of electric vehicle, Circuits System 12 is ASIC.Taking cost into account, when producing in enormous quantities, ASIC circuit system 12 spends at most several dollars, and the price of electric automobile power battery is typically in tens of to 100 dollars, and this invention is suitable on electric automobile power battery.It can further be stated that, Circuits System 12 can in the inside of the shell of Smart battery module 11, it is also possible in the outside of the shell of Smart battery module 11, it is important that Circuits System 12 and Smart battery module 11 are one, it is spatially next-door neighbour, 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 ASIC12 respectively through the first wire 13 and the second wire 15.ASIC12 can be powered by the first wire 13 and the second wire 15 by battery 14, it is also possible to by externally fed (not drawn in FIG by the circuit of externally fed).ASIC12 gathers the voltage of battery by the first wire 13 and the second wire 15, it is possible to be translated into digital quantity.
The positive pole 19 of Smart battery module and negative pole 20 can be attached directly to the both positive and negative polarity of battery 14, it is also possible to by the first switch 18 interconnection in Fig. 1.It should be noted that the first switch 18 can be any switch, it can be such as high-power FET.First switch 18 can turn on or cut off the charging and discharging circuit of battery 14, and the signal controlling the first switch 18 is sent by ASIC12, switchs 18 by privates 16 to first and is controlled.The B end of the first switch 18 simultaneously, namely the negative pole 20 of Smart battery module, is connected to ASIC12 by privates 17.ASIC12 passes through the voltage between measure traverse line 15 and wire 17, and when knowing the conducting resistance of the first switch 18, it is possible to calculate the size and Orientation of the electric current flowing through battery 14.
In Smart battery module 11, it is possible to having a temperature sensor 24, it can be wired on ASIC12, ASIC12 obtains the temperature information of Smart battery module by the output valve of collecting temperature sensor.Temperature sensor 24 can also be integrated in ASIC12.
In Smart battery module 11, it is possible to have one for battery balanced module, it is necessary to explanation, balanced method can be any method, for instance can be dissipative type.Resistance 22 in Fig. 1 and second switch 23 can realize the battery equalization method of a kind of dissipative type.The battery information (voltage, temperature) gathered can be sent to outside by order wire 10 by ASIC12, analyzed multiple Smart battery modules by certain outside controller and send the information of coming, the signal analyzing the Balance route drawn is returned to the ASIC12 in Smart battery module 11, then is controlled realizing equilibrium to second switch 23 by the 5th wire 21 by ASIC12.The end C that controls of second switch 23 can also be drawn out to the outside of Smart battery module either directly through wire, outside balanced control signal directly control.Can also be that ASIC12 passes through order wire 10 and receives the information that other Smart battery modules send, analyze these information and independently decide whether to carry out equilibrium, control second switch 23 again through the 5th wire 21 and carry out equilibrium.One Smart battery module 11 can also include more piece cell 14, and these batteries can be connected can also be in parallel, and ASIC12 can be powered jointly by these batteries 14.Every batteries 14 has one group of foregoing balance module, ASIC12 control equalizer switch, controls often joint cell 14 individually balanced.
General battery production manufacturer can pass through to measure the data obtaining representing battery behavior, for instance is probably a battery discharge characteristic curve (battery open circuit voltage is with the change of electricity size).Can storing that data in the ROM in ASIC12, ASIC can pass through the information such as these data and the cell voltage collected, temperature, draws the SOC information of present battery.SOC information can represent with percentage ratio, it is also possible to represents with ampere-hour number.ASIC12 can also by information such as the data stored in ROM and the cell voltage collected, electric currents; judge that whether cell operating status is normal; ASIC12 can pass through order wire 10 and send above-mentioned status information to outside; the break-make of the first switch 18 can also be determined, to protect battery 14 according to status information.
Smart battery module 11 is by order wire 10 and PERCOM peripheral communication.Owing to electric automobile power battery typically requires at least about 100 batteries series connection, therefore the communication between Smart battery module needs to solve by corresponding scheme.Communication between multiple Smart battery modules 11 can use the mode (referring to Fig. 2) that chain type connects, namely a Smart battery module 11 and a module before and after him connect, conspiring to create a chain, data are propagated on above-mentioned chain, finally pass to certain controller of outside.Connection between adjacent Smart battery module 11 can be isolated, it is also possible to does not isolate (method that such as can use Capacitance Coupled or voltage raising and reducing).Communication between multiple Smart battery modules 11 can also use the mode (referring to Fig. 3) of bus, namely the order wire 10 of several Smart battery modules 11 receives (connection between bus and Smart battery module typically requires isolation) in same bus, is then read the data in bus by certain outside controller.The agreement of bus can be any agreement, for instance CAN or IIC etc..The content of above-mentioned communication can be cell voltage, battery dump energy, battery temperature, battery status etc..
Due to the electrokinetic cell that uses in vehicle it is generally required to higher voltage levvl, so needing to be in series tens to up to a hundred pieces battery cells.As in figure 2 it is shown, more piece Smart battery module 11 is connected, switch 54 two ends being connected to motor 55 by controlled the 3.Two adjacent sections battery is communicated by communication interface 51, the information of final all batteries is delivered to controller 50 by certain the joint Smart battery module 11 being connected with controller 50, controller is by the analysis to battery data, making corresponding control, control information can be passed through to connect the communication interface 51 of each batteries and be delivered to each joint Smart battery module 11.Controller 50 also can control the 3rd switch 54 according to battery information and Content of Communication simultaneously, and the principle of foundation is to ensure that the safety of set of cells and external equipment.
As it is shown on figure 3, multiple batteries group can also connect in another way.The communication interface 51 often saving Smart battery module 11 is connected on communication bus 71, and communication bus 71 is connected with controller 50.Often battery information is sent on communication bus 71 by joint Smart battery module 11, and controller 50 reads battery information bus, judges and controls, sending control information on communication bus 71, then is read by each joint Smart battery module and responded.Controller 50 also can control the 3rd switch 54 according to battery information simultaneously, and the principle of foundation is to ensure that the safety of set of cells and external equipment.Method of attachment in Fig. 2 and Fig. 3 can effectively reduce the wiring quantity in the battery case after in groups.
As shown in Figure 4, the outer surface of Smart battery module can have a display device 80, is used for showing information such as dump energy, temperature, the internal switch state etc. of battery.The display device 80 Circuits System 12 within Smart battery module controls.The key benefit of display device 80 is when a lot saving after Smart battery module is grouped into a set of cells, display device 80 allows people understand situation and the equilibrium situation of each batteries easily, when set of cells breaks down, display device 80 allows people can investigate abort situation easily.
Claims (8)
1. a smart battery system, this smart battery system includes controller and at least one Smart battery module, this Smart battery module include at least one batteries and one have collection of simulant signal function and can convert analog signals into 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 communicates to connect with controller；
Described Smart battery module is designed with equalizing circuit for every batteries, is controlled the equalizer switch of equalizing circuit by described Circuits System, control every batteries individually balanced；
Also including the first switch in described Smart battery module, described first switch one end is connected with described battery cathode, and the other end is connected with described Circuits System；In described Circuits System, storage has battery discharge characteristic calibration curve information；
Described smart battery system is provided with display device, described display device display battery dump energy, temperature and internal switch state.
2. a kind of smart battery system according to claim 1, it is characterized in that: the communication between multiple Smart battery modules adopts chain type to connect, namely a Smart battery module and the Smart battery module before and after him connect, conspire to create a chain, data are propagated on above-mentioned chain, finally pass to controller.
3. a kind of smart battery system according to claim 1, it is characterised in that: multiple Smart battery modules are received in same bus by respective communication interface, and bus and controller connect.
4. a kind of smart battery system according to claim 1, it is characterized in that: Smart battery module is provided with temperature sensor, temperature sensor is wired to Circuits System, and Circuits System obtains the temperature information of Smart battery module by the output valve of collecting temperature sensor.
5. a kind of smart battery system according to claim 1, it is characterised in that: described Circuits System is special IC or the programmable system for being made up of discrete component and microprocessor.
6. a kind of smart battery system according to any of the above-described claim, it is characterised in that: the Content of Communication between Smart battery module and controller includes cell voltage, battery dump energy, battery temperature and/or battery status.
7. a kind of smart battery system according to claim 6, it is characterised in that: controller controls switch, the break-make of described on-off control battery and exterior terminal according to Content of Communication.
8. a kind of smart battery system according to the claims 1-5 any one claim, it is characterised in that: described smart battery system is for electric automobile, electric bicycle or mobile equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430264.7A CN103178305B (en) | 2011-12-21 | 2011-12-21 | Intelligent battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110430264.7A CN103178305B (en) | 2011-12-21 | 2011-12-21 | Intelligent battery |
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| CN103178305A CN103178305A (en) | 2013-06-26 |
| CN103178305B true CN103178305B (en) | 2016-07-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6313150B2 (en) * | 2014-07-15 | 2018-04-18 | ラピスセミコンダクタ株式会社 | Semiconductor device, battery monitoring system, and battery monitoring method |
| CN105098910A (en) * | 2015-08-11 | 2015-11-25 | 郑永春 | Intelligent lithium battery and distributed management system thereof |
| US20170092994A1 (en) * | 2015-09-25 | 2017-03-30 | Intel Corporation | Smart battery with integrated sensing and electronics |
| CN113258147B (en) * | 2021-03-30 | 2022-04-01 | 清华大学 | Intelligent battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|---|---|---|
| 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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