CN203218952U - Electric automobile cell management system - Google Patents
Electric automobile cell management system Download PDFInfo
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- CN203218952U CN203218952U CN 201320262708 CN201320262708U CN203218952U CN 203218952 U CN203218952 U CN 203218952U CN 201320262708 CN201320262708 CN 201320262708 CN 201320262708 U CN201320262708 U CN 201320262708U CN 203218952 U CN203218952 U CN 203218952U
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- control unit
- electric automobile
- management system
- bus
- cell management
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Abstract
The utility model provides an electric automobile cell management system. The electric automobile cell management system comprises a main control unit and multiple secondary control units, wherein each secondary control unit is connected with one cell in a cell set of an electrical automobile and is connected with the main control unit through a bus. The main control unit and the secondary control units realize communication through the bus, so real-time performance, stability and security of communication between the main control unit and the secondary control units can be greatly improved. For example, when acquisition of performance parameters of the cells is carried out, each secondary control unit can simultaneously acquire performance parameters of each cell, the performance parameters can be rapidly transmitted to the main control unit through the bus, intermediate data delay is quite short, so stability and security of data transmission are quite ideal.
Description
Technical field
The utility model relates to the battery management technical field, relates in particular to a kind of cell management system of electric automobile.
Background technology
Electric automobile with advantages such as its energy-conservation and environmental pollution are little, in recent years, has obtained fast development and extensive use, and predictably, electric automobile will become the main flow direction of following development of automobile.At present, the power resources of electric automobile are in vehicle power, and vehicle power generally is to be in series by tens of batteries.In order to guarantee the stable and reliability of electric powered motor, need manage these batteries, this can realize by special management system.Present battery management system generally comprises: be installed in the transducer on the single battery, an electronic switch and a controller, each transducer is by this electronic switch access controller.In the practical application, controller is communicated with each transducer successively by switching electronic switch, realizes the collection of battery performance parameter.Aforesaid way is gathered when can not realize in the battery pack each single battery performance parameter, needs consumption to receive the expense long period and can finish the collecting work of the performance parameter of each battery in the primary cell group, and real-time is low.
The utility model content
In view of this, the utility model provides a kind of cell management system of electric automobile.Can improve the real-time of data interaction in the battery management system.
A kind of cell management system of electric automobile that the utility model provides comprises: a main control unit; With, a plurality of from the control unit, each is connected in the batteries the batteries of electric automobile group from the control unit, and is connected with described main control unit by bus.
Further, described bus comprises: the CAN of controller local area network bus.
Further, each includes from the control unit:
Be used for gathering the sampling plate of battery performance parameter;
One end connects described sampling plate, the other end connect described CAN bus from controller.
Further, described sampling plate comprises: at least one item in battery sensor, voltage sensor and the temperature sensor.
Further, each also comprises from the control unit: from the CAN driver, describedly be connected with described CAN bus from the CAN driver by described from controller.
Further, described is the chip realization of TMS320F28035 from controller employing model, and described is the chip realization of SN65HVD1040 from CAN driver employing model.
Further, described main control unit comprises: external equipment and master controller, described master controller is connected with described external equipment with described CAN bus.
Further, described external equipment comprises: at least one item in alarm, keyboard and the display.
Further, described main control unit also comprises: main CAN driver, described main controller is connected with described CAN bus by described main CAN driver.
Further, it is the chip realization of TMS320F28035 that described master controller adopts model, and it is the chip realization of SN65HVD1040 that described main CAN driver adopts model.
The beneficial effects of the utility model:
The utility model because main control unit and from the control unit by bus communication, therefore will improve main control unit greatly and from real-time, stability and the fail safe of communication between the control unit.Give an example to say, when realizing the collecting work of battery performance parameter, each can gather the performance parameter of each batteries simultaneously from the control unit, be passed to main control unit rapidly by bus then, data time-delay weak point very in the middle of this, and the stability of data transmission and fail safe ideal very.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structural representation of the embodiment of the cell management system of electric automobile that provides of the utility model.
Fig. 2 is from the structural representation of embodiment of control unit among Fig. 1.
Fig. 3 is the structural representation of the embodiment of main control unit among Fig. 1.
Embodiment
Please refer to Fig. 1, is the structural representation of the embodiment of the cell management system of electric automobile that provides of the utility model.This cell management system of electric automobile comprises: a main control unit 1, a plurality of from control unit 2 and bus 3.Wherein, each is responsible for the management of the batteries the batteries of electric automobile group from control unit 2, and each all is connected with main control unit 1 by bus 3 from control unit 2.Preferably, bus 3 is selected CAN (Controller Area Network, controller local area network) bus for use.Because main control unit 1 and from control unit 2 by bus communication, therefore will improve main control unit 1 greatly and from real-time, stability and the fail safe of communication between the control unit 2.Give an example to say, when realizing the collecting work of battery performance parameter, each can gather the performance parameter of each batteries simultaneously from control unit 2, be passed to main control unit 1 rapidly by bus then, data time-delay weak point very in the middle of this, and the stability of data transmission and fail safe ideal very.
As shown in Figure 2, be from the structural representation of embodiment of control unit 2 among Fig. 1.Because each all has identical structure from control unit 2, therefore arbitrary describing wherein just only.As shown in Figure 2, comprise from control unit 2: from CAN driver 21, from controller 22 with for the sampling plate 23 of gathering battery performance parameter.
Wherein, can be by TI(Texas Instrument from CAN driver 21) model that provides of company is that the chip of SN65HVD1040 is realized.Needing only external this chip from controller 22 namely can be connected with bus 3.
, also be connected with sampling plate 23 except connecing from driver 21 from controller 22.The collection plate 23 main collections of being responsible for battery performance parameter, these battery parameters of being gathered comprise: at least one item in battery both end voltage, battery charging and discharging electric current and the battery temperature; Preferably, these battery parameters of being gathered comprise: battery both end voltage, battery charging and discharging electric current and battery temperature, owing to gather above-mentioned three performance parameters simultaneously, therefore can be more comprehensively and work information and the dump energy of accurate each batteries of reflection, be conducive to the management to battery, prolong battery useful life.
Concrete, the voltage at battery two ends can be realized gathering by voltage sensor.The signal that voltage sensor collects can be the A/D(analog/digital of introducing behind 0.1% electric resistance partial pressure and the capacitor filtering from controller 22 through precision) sampling channel, finish the voltage sample of single battery, and need not to consider that the associated cell potential that comes of battery strings raises and problem altogether, to reduce hardware design complexity.
Concrete, the battery charging and discharging electric current can be by current sensor (for example: Hall element) realize gathering.In the charge and discharge process of battery, the electric current of each batteries is different, therefore need the charging and discharging currents of every batteries be detected.And the voltage signal of Hall element output can just be introduced the A/D sampling channel from controller 22 behind the amplification of process amplifier and capacitor filtering, and by being converted to actual current value from controller 22.
Concrete, battery temperature can be by temperature sensor (preferred employing has high linear high-accuracy characteristic) realization collection.And the output signal of temperature sensor inserts the A/D sampling channel from controller 22 behind capacitor filtering, draws the actual battery temperature value again after converting from controller 22.
From controller 22 after obtaining the above-mentioned performance parameter of battery, can carry out battery operated state analysis, dump energy calculating according to the performance parameter that obtains, and whether the running parameter of judging battery is in allowed band, make diagnostic message with this, then diagnostic message, dump energy and performance parameter are transferred to main control unit 1.Because battery operated state analysis, dump energy calculate and diagnose by carrying out from controller 22, therefore can reduce the burden of main control unit 1, improve whole system operation efficient.
Preferably, can adopt the model of TI company from controller 22 is that the chip of TMS320F28035 is realized, being that the CAN driver chip of SN65HVD1040 cooperates with model.
As shown in Figure 3, be the structural representation of the embodiment of main control unit 1 among Fig. 1.Wherein main control unit 1 comprises: master controller 11, external equipment 12 and main CAN driver 13.Wherein, the model that master controller 11 is preferably TI company is the chip realization of TMS320F28035, and it is the chip realization of SN65HVD1040 that main CAN driver 13 preferably adopts the model of TI company.External equipment 12 comprises: at least one item in keyboard 121, alarm 122 and the display 123.Concrete, diagnostic message, dump energy and the performance parameter of 11 pairs of each batteries of master controller are analyzed and are calculated, on the one hand information is presented on the display 123 and according to actual conditions and selects to report to the police by alarm 122, make relevant control operation information on the other hand, send to accordingly from controller 22.According to the control operation information that receives, make relevant control operation from controller 22, adjust the operating attitude of battery.In addition master controller 11 also be responsible for respectively from the management of controller 22 communications make whole system efficiently, the transmission of realization information rapidly.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1. cell management system of electric automobile is characterized in that: comprising:
A main control unit;
With, a plurality of from the control unit, each is connected in the batteries the batteries of electric automobile group from the control unit, and is connected with described main control unit by bus.
2. cell management system of electric automobile as claimed in claim 1, it is characterized in that: described bus comprises: the CAN of controller local area network bus.
3. cell management system of electric automobile as claimed in claim 2 is characterized in that: each includes from the control unit:
Be used for gathering the sampling plate of battery performance parameter;
One end connects described sampling plate, the other end connect described CAN bus from controller.
4. cell management system of electric automobile as claimed in claim 3, it is characterized in that: described sampling plate comprises: in battery sensor, voltage sensor and the temperature sensor at least one.
5. as claim 3 or 4 described cell management system of electric automobile, it is characterized in that: each also comprises from the control unit: from the CAN driver, describedly be connected with described CAN bus from the CAN driver by described from controller.
6. cell management system of electric automobile as claimed in claim 5 is characterized in that: described to adopt model from controller is that the chip of TMS320F28035 is realized, described to adopt model from the CAN driver be that the chip of SN65HVD1040 is realized.
7. as each described cell management system of electric automobile among the claim 2-4, it is characterized in that: described main control unit comprises: external equipment and master controller, described master controller is connected with described external equipment with described CAN bus.
8. cell management system of electric automobile as claimed in claim 7, it is characterized in that: described external equipment comprises: in alarm, keyboard and the display at least one.
9. cell management system of electric automobile as claimed in claim 7, it is characterized in that: described main control unit also comprises: main CAN driver, described main controller is connected with described CAN bus by described main CAN driver.
10. cell management system of electric automobile as claimed in claim 9 is characterized in that: the chip realization that described master controller employing model is TMS320F28035, the chip realization that described main CAN driver employing model is SN65HVD1040.
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CN 201320262708 CN203218952U (en) | 2013-05-14 | 2013-05-14 | Electric automobile cell management system |
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CN 201320262708 CN203218952U (en) | 2013-05-14 | 2013-05-14 | Electric automobile cell management system |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105977558A (en) * | 2016-07-01 | 2016-09-28 | 欣旺达电动汽车电池有限公司 | Extensible hybrid battery management system |
CN107490765A (en) * | 2016-08-02 | 2017-12-19 | 西安电子科技大学 | A kind of SPI interface circuitry for battery monitor system |
CN110068766A (en) * | 2018-01-22 | 2019-07-30 | 三星Sdi株式会社 | Integrated circuit and battery management system including it |
CN114497767A (en) * | 2022-01-21 | 2022-05-13 | 广东志成冠军集团有限公司 | Connection system and connection method for sampling, communication and control link of large lithium battery pack |
-
2013
- 2013-05-14 CN CN 201320262708 patent/CN203218952U/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105977558A (en) * | 2016-07-01 | 2016-09-28 | 欣旺达电动汽车电池有限公司 | Extensible hybrid battery management system |
CN105977558B (en) * | 2016-07-01 | 2019-04-12 | 欣旺达电动汽车电池有限公司 | Expansible hybrid battery management system |
CN107490765A (en) * | 2016-08-02 | 2017-12-19 | 西安电子科技大学 | A kind of SPI interface circuitry for battery monitor system |
CN110068766A (en) * | 2018-01-22 | 2019-07-30 | 三星Sdi株式会社 | Integrated circuit and battery management system including it |
US10915386B2 (en) | 2018-01-22 | 2021-02-09 | Samsung Sdi Co., Ltd. | Integrated circuit and battery management system including the same |
CN110068766B (en) * | 2018-01-22 | 2022-07-12 | 三星Sdi株式会社 | Integrated circuit and battery management system including the same |
CN114497767A (en) * | 2022-01-21 | 2022-05-13 | 广东志成冠军集团有限公司 | Connection system and connection method for sampling, communication and control link of large lithium battery pack |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140514 |