CN205589009U - Electric vehicle battery management device - Google Patents
Electric vehicle battery management device Download PDFInfo
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- CN205589009U CN205589009U CN201620400203.4U CN201620400203U CN205589009U CN 205589009 U CN205589009 U CN 205589009U CN 201620400203 U CN201620400203 U CN 201620400203U CN 205589009 U CN205589009 U CN 205589009U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides an electric vehicle battery management device, including the DSP controller to and and DSP controller homogeneous phase modules such as voltage acquisition, electric current collection, temperature data collection, battery equilibrium and GPSGPRS even, wherein, the DSP controller is formed by a DSP chip and peripheral circuit, the voltage acquisition module includes controllable switch S1, S2, S3, S4 to and electric capacity C, a AD converter and first singlechip MCU, electric current collection module includes hall current sensor, the 2nd AD converter and the second single -chip microcomputer MCU who connects according to the preface, temperature acquisition module includes digital temperature sensor and the third singlechip MCU who connects according to the preface, battery equalization module includes a plurality of equilibrium unit that connect in parallel mutually with the battery monomer, and equilibrium unit all includes a resistance R and an equalization switch K. Implement the utility model discloses, it leads to electric automobile can not in time supply the not enough of electric quantity with measuring inaccurately to overcome difficult measurement of electric vehicle battery parameter to improve battery life.
Description
Technical field
This utility model relates to battery of electric vehicle management technique field, particularly relates to a kind of batteries of electric automobile managing device.
Background technology
Battery management technique be to ensure that electric automobile safely, put forward a considerable technology of high-octane service efficiency.
Cell managing device is by including the accurate of residual capacity, charging and discharging currents, terminal voltage and temperature etc. to each important parameter of system
Measuring, accurate estimated driving force set of cells dump energy, to ensure the flying power of electric motor car, prevents the super-charge super-discharge of battery simultaneously,
Ensure the safety of car load and extend the service life of batteries of electric automobile.
Inventor finds, in place of existing cell managing device Shortcomings, it is disadvantageous in that: one, accumulator
Terminal voltage generally uses common mode method, differential mode method and V/F method, but the common drawback of these methods is to be effectively isolated set of cells
(forceful electric power) and car electricity system (light current), and the connection in series-parallel cell number on electric automobile is more, the electricity that voltage measurement is used
The devices such as resistance, amplifier, are easily affected generation deviation by temperature, resistance precision；Two, the current detecting of accumulator is generally with sampling
Electric-resistivity method is the indirect method of measurement of representative, but sampling resistor to be serially connected with in main loop of power circuit by this method, it is impossible to realize with
Control the isolation in loop, be not suitable in accumulator management device；Three, it is generally difficult to measure due to the temperature of internal storage battery,
The ambient temperature generally using detection accumulator operational site replaces, and conventional temperature checking method is by thermocouple and thermoelectricity
Resistance sensor detects, and thermocouple and thermal resistance sensor are all easily limited by field of employment and have the shortcoming that conduction of heat error is big,
There is deviation in the detection that can make temperature；Four, traditional automobile batteries managing device the most only lays particular emphasis on the real-time detection of battery parameter,
And have ignored the battery requirement to equilibrium, and in order to reach power demand, electric automobile needs to make more piece cell connection in series-parallel
With, owing to each cell exists discordance, the hidden danger in terms of performance, life-span and safety after using in groups, can be brought.
Summary of the invention
This utility model embodiment technical problem to be solved is, it is provided that a kind of batteries of electric automobile managing device, gram
Take accumulator of electric car parameter difficulty to measure and measure inaccurate and cause electric automobile can not supplement the deficiency of electricity in time, and improve
Service lifetime of accumulator.
This utility model embodiment provides a kind of battery of electric vehicle managing device, including dsp controller, and with described
Voltage acquisition module that dsp controller is all connected, current acquisition module, temperature collect module, battery balanced module and
GPS/GPRS module；Wherein,
Described dsp controller is formed by a dsp chip and peripheral circuit thereof；
Described voltage acquisition module includes gate-controlled switch S1, gate-controlled switch S2, gate-controlled switch S3, gate-controlled switch S4, and electric capacity
C, the first A/D converter and the first single-chip microprocessor MCU；Wherein, one end of gate-controlled switch S1 and gate-controlled switch S2 is connected in parallel on
In accumulator battery, the other end is connected in parallel on described electric capacity C；Gate-controlled switch S3 and gate-controlled switch S4 one end are connected in parallel on described electricity
Holding on C, the other end is connected on described first A/D converter；Described gate-controlled switch S1, gate-controlled switch S2, gate-controlled switch
S3, gate-controlled switch S4 and described first A/D converter are connected with described first single-chip microprocessor MCU by control line the most respectively；
Described current acquisition module includes Hall current sensor, the second A/D converter and the second singlechip MCU sequentially connected；
Wherein, described Hall current sensor is connected between described accumulator battery and load；
Described temperature collect module includes DS18B20 digital temperature sensor and the 3rd single-chip microprocessor MCU sequentially connected；Wherein, institute
State DS18B20 digital temperature sensor to place near described accumulator battery；
Described battery balanced module includes multiple balanced unit, and each balanced unit is all in parallel with a single battery, described each
Balanced unit all includes an a resistance R and equalizer switch K；Wherein, each equalizer switch K is driven real by pwm signal
Now close or disconnect.
Wherein, described voltage acquisition module, current acquisition module, temperature collect module, battery balanced module and
GPS/GPRS module is all connected with described dsp controller by intercommunicating CAN.
Wherein, when described first single-chip microprocessor MCU control described gate-controlled switch S1 and described gate-controlled switch S2 all closes,
Realize described accumulator battery described electric capacity C is charged；When described first single-chip microprocessor MCU controls described gate-controlled switch S3 and institute
State gate-controlled switch S4 when all closing, and control described gate-controlled switch S1 and described gate-controlled switch S2 further and all disconnect, it is achieved
Voltage acquisition to described accumulator battery.
Wherein, described Hall current sensor includes magnetic core, Hall element and conductor；Wherein, described conductor series connection is negative
Carry between battery；Described magnetic core is socketed on the outer surface of described conductor, and carries out magnetic sensing with described Hall element；Institute
State Hall element to be connected on described second A/D converter.
Implement this utility model embodiment, have the advantages that
Use voltage, electric current and temperature-detecting device that accumulator of electric car parameter is detected in real time, it is achieved accumulator residue is held
The accurate measurement of amount, battery internal temperature, accumulator voltage and charging and discharging currents, accurately estimates batteries of electric automobile residue
Electricity, to ensure the flying power of electric automobile, prevents the super-charge super-discharge of accumulator simultaneously, it is ensured that the safety of car load and prolongation electricity
The service life of electrical automobile accumulator.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will to embodiment or
In description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
The accompanying drawing obtaining other according to these accompanying drawings still falls within category of the present utility model.
Fig. 1 is that the system structure of a kind of battery of electric vehicle managing device in this utility model embodiment connects block diagram；
Fig. 2 is the circuit connection structure schematic diagram of voltage acquisition module in Fig. 1；
Fig. 3 is the voltage change curve figure that in Fig. 2, voltage acquisition module is charged to electric capacity C；
Fig. 4 is the circuit connection structure schematic diagram of current acquisition module in Fig. 1；
Fig. 5 is Hall current sensor operation principle schematic diagram in current acquisition module in Fig. 4；
Fig. 6 is the circuit connection structure schematic diagram of temperature collect module in Fig. 1；
Fig. 7 is the circuit connection structure schematic diagram of battery balanced module in Fig. 1；
Fig. 8 is the topological structure of a kind of battery of electric vehicle managing device in this utility model embodiment and electric automobile intelligent charge networking
Schematic diagram.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing to this utility model
It is described in further detail.
As shown in Figures 1 to 8, in this utility model embodiment, it is provided that a kind of battery of electric vehicle managing device, bag
Include dsp controller 1, and the voltage acquisition module 2, current acquisition module 3, the temperature that are all connected with dsp controller 1 are adopted
Collection module 4, battery balanced module 5 and GPS/GPRS module 6；Wherein,
Dsp controller 1 is formed by a dsp chip and peripheral circuit thereof；
Voltage acquisition module 2 includes gate-controlled switch S1, gate-controlled switch S2, gate-controlled switch S3, gate-controlled switch S4, and electric capacity C,
First A/D converter and the first single-chip microprocessor MCU；Wherein, one end of gate-controlled switch S1 and gate-controlled switch S2 is connected in parallel on electric power storage
In the group of pond, the other end is connected in parallel on electric capacity C；Gate-controlled switch S3 and gate-controlled switch S4 one end are connected in parallel on electric capacity C, another
End is connected on the first A/D converter；Gate-controlled switch S1, gate-controlled switch S2, gate-controlled switch S3, gate-controlled switch S4 and
First A/D converter is connected by control line and the first single-chip microprocessor MCU the most respectively；
Current acquisition module 3 includes Hall current sensor, the second A/D converter and the second singlechip MCU sequentially connected；Its
In, Hall current sensor is connected between accumulator battery and load；
Temperature collect module 4 includes DS18B20 digital temperature sensor and the 3rd single-chip microprocessor MCU sequentially connected；Wherein,
DS18B20 digital temperature sensor is placed near accumulator battery；
Battery balanced module 5 includes multiple balanced unit, and each balanced unit is all in parallel with a single battery, and each equilibrium is single
Unit all includes an a resistance R and equalizer switch K；Wherein, each equalizer switch K is driven by pwm signal and realizes Guan Bi
Or disconnect.
It should be noted that, voltage acquisition module 2, current acquisition module 3, temperature collect module 4, battery balanced module
5 and GPS/GPRS modules 6 are all connected with dsp controller 1 by intercommunicating CAN
In this utility model embodiment, voltage detection module 2, current detection module 3, temperature detecting module 4 are responsible for detection electric power storage
The parameter in pond is in order to estimate battery remaining power, and battery balanced module 5 is used for equalizing inconsistent battery, to improve electricity
The service life in pond.And in GPS/GPRS module 6, GPS is used for positioning automobile position, GPRS is used for contacting monitoring
Center, also makes system can automatically search the charging station that closest and online queuing time is the shortest dump energy deficiency when,
And be charged, to ensure continuation of the journey；In the case of electric automobile breaks down, it is also possible to by GPS/GPRS module 6 with
Surveillance center gets in touch, and current location information is sent to Surveillance center
As in figure 2 it is shown, the first single-chip microprocessor MCU I/O mouth is all connected with gate-controlled switch S1 and gate-controlled switch S2, another
I/O mouth is all connected with gate-controlled switch S3 and gate-controlled switch S4, and the first single-chip microprocessor MCU can control gate-controlled switch S1 to S4
Guan Bi or disconnection.When the first single-chip microprocessor MCU control gate-controlled switch S1 and gate-controlled switch S2 all closes, it is achieved accumulator
Electric capacity C is charged by group, as it is shown on figure 3, be electric capacity C typical charge curve；When the first single-chip microprocessor MCU controls gate-controlled switch
When S3 and gate-controlled switch S4 all closes, and control gate-controlled switch S1 and gate-controlled switch S2 all disconnects further, it is achieved to electric power storage
The voltage acquisition of pond group, i.e. completes primary voltage acquisition tasks.
As shown in Figure 4, the Hall current sensor of current detection module 3 is serially connected between accumulator and load, and second is single
Sheet machine MCU processes the data that the second A/D converter is sent here, completes by the conversion of analog to digital.
As it is shown in figure 5, Hall current sensor includes magnetic core, Hall element and conductor；Wherein, conductor series connection is in load
And between battery；Magnetic core is socketed on the outer surface of described conductor, and carries out magnetic sensing with Hall element；Hall element connects
On the second A/D converter.
During use by conductor series connection between load and battery, Hall element is connected on the second A/D converter.Work as conductor
In when flowing through electric current, owing to electromagnetic induction can produce magnetic field, magnetic field can be gathered on magnetic core, by the Hall effect of Hall element,
The electric current flow through being converted to voltage signal and passes to A/D converter, the process through second singlechip MCU completes adopting of electric current
Collection.Hall current sensor is the sensor utilizing Hall effect that primary current is transformed to secondary voltage signal.
As shown in Figure 6, temperature detecting module 4 includes digital temperature sensor DS18B20 and the 3rd single-chip microprocessor MCU；
DS18B20 temperature sensor, has volume little, and hardware spending is low, and capacity of resisting disturbance is strong, the feature that precision is high.And
Need not any peripheral cell in using, it is only necessary to a Tiaokou line, the both-way communication of microprocessor and DS18B20 can be realized.
As it is shown in fig. 7, battery balanced module 5 includes multiple balanced unit, wherein, each balanced unit all includes that one is equal
Weighing apparatus switch K and a resistance, such as equalizer switch K1 to Kn, resistance R1 to Rn.Equalizer switch is driven by pwm signal, ic
Being charging and discharging currents, the Balance route unit that each cell is made up of 1 equalizer switch K and equalizing resistance R is therewith
Correspondence, charging and discharging currents and the euqalizing current of this cell are respectively ib and ie.
Without equalizing circuit, then the electric current flowing through accumulator is ic, after adding equalizing circuit, flow through accumulator
Electric current be ib, the electric current flowing through equalizing resistance is ie, and the relation between them is:
Ib=ic-ie
By controlling the Guan Bi of equalizer switch K, the size of euqalizing current ie can be controlled, such that it is able to control actual to flow through accumulator
The size of electric current ib, can accomplish by this method to carry out distinctiveness discharge and recharge for inconsistent cell, thus
Ensure the equilibrium of each cell, eliminate the inconsistent impact on battery performance of cell during battery uses.
As shown in Figure 8, the networking of electric automobile intelligent charge mainly includes gps satellite, GPRS wireless signal tower, monitoring
Center and charging station.By networking make cell managing device automatically can search dump energy deficiency when closest and
The charging station that line queuing time is the shortest, and be charged, to ensure continuation of the journey；Can also in the case of electric automobile breaks down,
Got in touch with Surveillance center by GPS/GPRS module 6, and current location information is sent to Surveillance center.
Implement this utility model embodiment, have the advantages that
Use voltage, electric current and temperature-detecting device that accumulator of electric car parameter is detected in real time, it is achieved accumulator residue is held
The accurate measurement of amount, battery internal temperature, accumulator voltage and charging and discharging currents, accurately estimates batteries of electric automobile residue
Electricity, to ensure the flying power of electric automobile, prevents the super-charge super-discharge of accumulator simultaneously, it is ensured that the safety of car load and prolongation electricity
The service life of electrical automobile accumulator.
Above disclosed be only this utility model preferred embodiment, certainly can not with this limit this utility model it
Interest field, the equivalent variations therefore made according to this utility model claim, still belong to the scope that this utility model is contained.
Claims (4)
1. a batteries of electric automobile managing device, it is characterised in that include dsp controller (1), and control with described DSP
Device (1) all be connected voltage acquisition module (2), current acquisition module (3), temperature collect module (4), battery balanced mould
Block (5) and GPS/GPRS module (6)；Wherein,
Described dsp controller (1) is formed by a dsp chip and peripheral circuit thereof；
Described voltage acquisition module (2) includes gate-controlled switch S1, gate-controlled switch S2, gate-controlled switch S3, gate-controlled switch S4, with
And electric capacity C, the first A/D converter and the first single-chip microprocessor MCU；Wherein, gate-controlled switch S1 and one end of gate-controlled switch S2
Being connected in parallel in accumulator battery, the other end is connected in parallel on described electric capacity C；Gate-controlled switch S3 and gate-controlled switch S4 one end are connected in parallel on
On described electric capacity C, the other end is connected on described first A/D converter；Described gate-controlled switch S1, gate-controlled switch S2, can
Control switch S3, gate-controlled switch S4 and described first A/D converter are the most respectively by control line and described first single-chip microprocessor MCU
It is connected；
Described current acquisition module (3) includes Hall current sensor, the second A/D converter and the second singlechip sequentially connected
MCU；Wherein, described Hall current sensor is connected between described accumulator battery and load；
Described temperature collect module (4) includes DS18B20 digital temperature sensor and the 3rd single-chip microprocessor MCU sequentially connected；Its
In, described DS18B20 digital temperature sensor is placed near described accumulator battery；
Described battery balanced module (5) includes multiple balanced unit, and each balanced unit is all in parallel with a single battery, institute
State each balanced unit and all include an a resistance R and equalizer switch K；Wherein, each equalizer switch K is by pwm signal
Drive and realize Guan Bi or disconnect.
2. batteries of electric automobile managing device as claimed in claim 1, it is characterised in that described voltage acquisition module (2), electricity
Stream acquisition module (3), temperature collect module (4), battery balanced module (5) and GPS/GPRS module (6) are all by interior
The CAN of portion's communication is connected with described dsp controller (1).
3. batteries of electric automobile managing device as claimed in claim 1, it is characterised in that when described first single-chip microprocessor MCU controls
When described gate-controlled switch S1 and described gate-controlled switch S2 all closes, it is achieved described electric capacity C is charged by described accumulator battery；When
When described first single-chip microprocessor MCU control described gate-controlled switch S3 and described gate-controlled switch S4 all closes, and control institute further
State gate-controlled switch S1 and described gate-controlled switch S2 all to disconnect, it is achieved the voltage acquisition to described accumulator battery.
4. batteries of electric automobile managing device as claimed in claim 1, it is characterised in that described Hall current sensor includes magnetic
Core, Hall element and conductor；Wherein, described conductor series connection is between load and battery；Described magnetic core is socketed in described conductor
On outer surface, and carry out magnetic sensing with described Hall element；Described Hall element is connected on described second A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620400203.4U CN205589009U (en) | 2016-04-28 | 2016-04-28 | Electric vehicle battery management device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620400203.4U CN205589009U (en) | 2016-04-28 | 2016-04-28 | Electric vehicle battery management device |
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| CN205589009U true CN205589009U (en) | 2016-09-21 |
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| CN201620400203.4U Expired - Fee Related CN205589009U (en) | 2016-04-28 | 2016-04-28 | Electric vehicle battery management device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394305A (en) * | 2016-12-05 | 2017-02-15 | 深圳市佰泽电子有限公司 | Electromobile battery pack capable of being quickly charged and quickly-charging method thereof |
| CN106740134A (en) * | 2016-11-22 | 2017-05-31 | 天津韶乐科技有限公司 | A kind of electric quantity of batteries of electric vehicle management system and its management method |
| CN106874638A (en) * | 2017-04-14 | 2017-06-20 | 深圳市瀚路新能源汽车有限公司 | The AD process circuits and electric automobile of multi-breal switch signal |
| CN110962610A (en) * | 2019-12-18 | 2020-04-07 | 安徽天健环保车辆部件有限公司 | New energy bus electric quantity analysis system and method |
-
2016
- 2016-04-28 CN CN201620400203.4U patent/CN205589009U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740134A (en) * | 2016-11-22 | 2017-05-31 | 天津韶乐科技有限公司 | A kind of electric quantity of batteries of electric vehicle management system and its management method |
| CN106394305A (en) * | 2016-12-05 | 2017-02-15 | 深圳市佰泽电子有限公司 | Electromobile battery pack capable of being quickly charged and quickly-charging method thereof |
| CN106874638A (en) * | 2017-04-14 | 2017-06-20 | 深圳市瀚路新能源汽车有限公司 | The AD process circuits and electric automobile of multi-breal switch signal |
| CN110962610A (en) * | 2019-12-18 | 2020-04-07 | 安徽天健环保车辆部件有限公司 | New energy bus electric quantity analysis system and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20210428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |