CN104407301A - Dynamic intelligent detection device and detection method for storage battery of electric automobile - Google Patents
Dynamic intelligent detection device and detection method for storage battery of electric automobile Download PDFInfo
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- CN104407301A CN104407301A CN201410720740.2A CN201410720740A CN104407301A CN 104407301 A CN104407301 A CN 104407301A CN 201410720740 A CN201410720740 A CN 201410720740A CN 104407301 A CN104407301 A CN 104407301A
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Abstract
The invention relates to the field of detection of batteries of electric automobiles, in particular to a dynamic intelligent detection device and a detection method for a storage battery of an electric automobile. The dynamic intelligent detection device for the storage battery of the electric automobile comprises a voltage sensor, a current sensor, a temperature sensor and a pressure sensor which are in signal transmission with an ARM (Advanced RISC Machines) processor through a data bus CAN (Controller Area Network), wherein the voltage sensor, the current sensor, the temperature sensor and the pressure sensor are all in signal connection with the storage battery, and the ARM processor is respectively in signal connection with an LED display, a buzzer and a storage. The ARM processor is further provided with a plurality of open interfaces. The detection concepts of local concentration, overall distribution, dynamic real-time detection, and intelligent judgment prompt are proposed, that is, all batteries are divided into a plurality of small groups, each small group uses one detection module to carry out dynamic real-time concentrated detection, and the whole system uses a plurality of sensors to acquire data and transmits the data to the ARM processor through the connection of the CAN bus.
Description
Technical field
The present invention relates to batteries of electric automobile detection field, specifically relate to a kind of accumulator of electric car group dynamic and intelligent pick-up unit and detection method.
Background technology
The basic business model that electric automobile is filled electrical changing station by state's net is defined as: to change electricity be main, plug-in be auxiliary, concentrate charging, unified dispensing.This development strategy essence being Main Patterns with " changing battery " is by electrokinetic cell link Market Operation.
Battery technology is one of core technology of electric automobile.Accumulator is complicated electro-chemical systems, has all carried out large quantifier elimination both at home and abroad, achieve many achievements to battery management technique.It is generally acknowledged that battery management system mainly contains following function: battery status parameter acquisition (comprising temperature, voltage, electric current etc.); The accurate estimation of battery charge state; The early diagnosis of unhealthy battery; To electric battery safe operation overall monitor, as prevented the overcharge and overdischarge etc. of battery.
Because accumulator of electric car group is normally made up of tens (up to a hundred) cells, so, the whether normal quality not only reflecting battery performance of duty of each cell, and affect capacity and the dump energy of electric battery.Practice shows, in electric automobile operational process, as detected not in time, finds out aged battery adjustment, and the capacity of electric battery will diminish, and the life-span will shorten, and the highly effective and safe affecting whole electric battery runs.
The detection of cell operating status is completed by battery management system, and other functions of battery management system (comprising the calculating of dump energy) are all be based upon on basis that cell operating status detects, the research development of battery pack working state detecting method to electric automobile has very important significance.
Battery pack working state detecting method.Accumulator of electric car group generally all adopts series system work, and working current and cell are the same, and detect than being easier to, the detection of terminal voltage is then cumbersome.If only detect the terminal voltage of electric battery, method is very simple, only need connect testing circuit at the two ends of electric battery, but it is not all right for doing like this, because although total operating voltage can be obtained, but the terminal voltage of concrete cell cannot be judged, as long as and the normal work and performance that have one piece of battery to go wrong will to affect whole Battery pack; In addition, high to testing circuit accuracy requirement.The normal range of operation of a cell terminal voltage is smaller, and such as the final voltage of 12V lead-acid battery is at about 10V, and voltage change range is between 2 ~ 3V, as long as the precision of testing circuit 10% can detect the variable quantity of 1V.If 24 pieces of 12V lead-acid battery series connection, rated voltage is 288V, and final discharging voltage is 240V, and the normal variation scope of voltage is 48V, if the terminal voltage of one piece of battery is down to 9V, being so reflected in total voltage is 285V, has only changed about 1%.Visible, the precision of testing circuit at least will reach the change that more than 1% just can detect a few volt voltage.And whole Battery pack detects the slow change being difficult to find cell, the build-up effect comprising the aging of cell itself and bring because of cell consistency problem.Whole group of detection cannot detect battery and battery pack actual capacity, cannot screen wherein aging battery.
Practical method detects each cell.But for the electric battery that series connection is formed, the subject matter that the terminal voltage that will automatically detect each cell runs into is the selection of witness mark and the electric isolution problem of testing circuit and detected electric battery.The selection of potential reference point not only affects measuring accuracy as mentioned above, also proposes very high requirement to the measurement range of metering circuit.And the safety that the isolation of detected electric battery and testing circuit not only relates to system also affects complexity and the realizability of testing circuit.The mainly distribution detection of current employing and centralized detecting two kinds of methods.
1) distribute detection method
So-called distributed isolation detection technology is exactly by the detection module of monomer battery voltage and temperature, localization, and then by the data centralization that these detection modules detect by certain means of communication, finally unified process.The object done like this is exactly to solve the variety of problems existing for centralized detecting method.Its major advantage is:
(1) line is simple, eliminates multicircuit switch, dependable performance.
(2) measuring accuracy is higher, compares the development trend meeting car electrics CAN.
(3) distributed module solves reference point problem, utilizes bus communication mode (employing optocoupler) to solve the isolating problem of main control computer and electric battery.
But application distribution detection technique also must solve following problem:
(1) because detection module directly continues power taking from tested battery, energy-conservation and safety is unfavorable for.
(2) when battery is more, module number is also many, cost and complexity is improved, and requires that communication bus has higher load capacity.
Functionally see, detection module is primarily of detection sub-module and communicator module two large divisions composition.Detection sub-module will complete collection and the conditioning task of data, and communicator module then will link up the information interchange with governor circuit, receives the instruction of governor circuit, uploads the detection data provided by detection sub-module.Because the developing direction of car electrics adopts CAN technology, so communicator module is connected with adopting CAN between governor circuit.
2) centralized detecting method
Centralized detecting method detects each cell with a set of testing circuit timesharing.Detection technique is more directly perceived, in order to detect the voltage of every battery, need the voltage signal of every battery to be introduced checkout equipment (to form if battery pack saves cell by n, need to draw n+1 bar detection line), adopt the technology that hyperchannel switches, namely by switching device (relay), the voltage signal of more piece cell is switched to same differential amplifier, samples with an A/D converter after signal transacting." switching over " dynamically changes reference point, ensures that each measurement is all the terminal voltage of a cell; Differential Input then ensure that electric battery and testing circuit are not altogether, although do not accomplish full isolation, than connecting safety altogether.The detection of battery temperature generally can adopt numeral or analog temperature sensor, the electric current required because of electric automobile comparatively large (tens to hundreds of peace), so the detection to battery set charge/discharge electric current, general non-contact current sensor or the transmitter of adopting realizes.
This method major defect is that signal wire is more, increases difficulty and the complexity of wiring, affects measuring accuracy, reduce reliability.
Summary of the invention
For the technical matters existed in existing band process processed, the object of the present invention is to provide a kind of accumulator of electric car group dynamic and intelligent pick-up unit and detection method.
To achieve these goals, the technical solution adopted in the present invention is: a kind of accumulator of electric car group dynamic and intelligent pick-up unit, comprise the voltage sensor, current sensor, temperature sensor and the pressure transducer that are transmitted by data bus CAN signal with arm processor, described voltage sensor, current sensor, temperature sensor and pressure transducer are all connected with electric battery signal, and described arm processor is connected with light-emitting diode display, hummer and memory signals respectively.
Arm processor is also provided with several open interfaces.
The detection method of accumulator of electric car group dynamic and intelligent pick-up unit, when electric battery in charging process or use procedure by voltage sensor, current sensor, temperature sensor, the real-time parameter of pressure transducer collection electric battery is passed to arm processor by data bus CAN and is carried out data processing, carry out real-time update and be stored in storer storing by the mathematical model set up, shown effective electricity and the duty of electric battery by light-emitting diode display simultaneously, audio alert is carried out by hummer when electric battery exceedes the limit value state of setting, this device adopts multiport simultaneously, can be connected with the electric-quantity display device of electric automobile.
For overcoming the shortcoming of distribution detection method and centralized detecting method, the present invention proposes the detection thinking of " concentration of local ", " overall distribution " " dynamic realtime detection " " intelligent decision prompting ", several groups are divided into by all batteries, each group detection module carries out the centralized detection of dynamic realtime, and whole system is carried out data acquisition by several sensors and to be connected by CAN and pass to arm processor and form.In brief, the essence of concentration/distribution formula detection system is exactly the real-time detection module of detecting unit partial dynamic, and data to arm processor, are then carried out calculating by bus transfer, store, upgrade, shown.
Concentration/distribution formula detects except having the advantage of first two mode, also has following major advantage:
Strengthen dirigibility and the extendibility of establishment system; Add the reliability of system; Effective electric energy (electric automobile can leave the aging performance of how many kilometers and electric battery) of more intuitive display electric battery; There is higher cost performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
For further describing the present invention, below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of accumulator of electric car group dynamic and intelligent pick-up unit shown in Fig. 1, comprise the voltage sensor, current sensor, temperature sensor and the pressure transducer that are transmitted by data bus CAN signal with arm processor, described voltage sensor, current sensor, temperature sensor and pressure transducer are all connected with electric battery signal, described arm processor is connected with light-emitting diode display, hummer and memory signals respectively, and arm processor is also provided with several open interfaces.
Battery pack dynamic and intelligent pick-up unit is by voltage sensor, and current sensor, temperature sensor, pressure transducer, arm processor, storer, light-emitting diode display, hummer are formed.When electric battery in charging process or use procedure by voltage sensor, current sensor, temperature sensor, the real-time parameter of pressure transducer collection electric battery is passed to arm processor by data bus CAN and is carried out data processing, carry out real-time update and be stored in storer storing by the mathematical model set up, shown the state (effective electricity of electric battery by light-emitting diode display simultaneously, the duty of battery), audio alert is carried out by hummer when electric battery exceedes the limit value state of setting, this device adopts multiport simultaneously, can be connected with the electric-quantity display device of electric automobile.When driver carries out there has been measurement standard (effective electricity) when changing electric battery, during driving, there is the reference of distance travelled; Be provide electric energy metrical accurately by electrokinetic cell link Market Operation for Guo Wang company realizes accumulator of electric car group with the development strategy essence that " changing battery " is Main Patterns simultaneously, avoid unnecessary electric energy metrical dispute occurs with user.
Above content is only to design example of the present invention and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the design of invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (3)
1. an accumulator of electric car group dynamic and intelligent pick-up unit, it is characterized in that: described pick-up unit comprises the voltage sensor, current sensor, temperature sensor and the pressure transducer that are transmitted by data bus CAN signal with arm processor, described voltage sensor, current sensor, temperature sensor and pressure transducer are all connected with electric battery signal, and described arm processor is connected with light-emitting diode display, hummer and memory signals respectively.
2. accumulator of electric car group dynamic and intelligent pick-up unit according to claim 1, is characterized in that: described arm processor is also provided with several open interfaces.
3. the detection method of an accumulator of electric car group dynamic and intelligent pick-up unit as claimed in claim 1, it is characterized in that: when electric battery in charging process or use procedure by voltage sensor, current sensor, temperature sensor, the real-time parameter of pressure transducer collection electric battery is passed to arm processor by data bus CAN and is carried out data processing, carry out real-time update and be stored in storer storing by the mathematical model set up, shown effective electricity and the duty of electric battery by light-emitting diode display simultaneously, audio alert is carried out by hummer when electric battery exceedes the limit value state of setting, this device adopts multiport simultaneously, can be connected with the electric-quantity display device of electric automobile.
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| CN201410720740.2A CN104407301A (en) | 2014-12-02 | 2014-12-02 | Dynamic intelligent detection device and detection method for storage battery of electric automobile |
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| CN201410720740.2A CN104407301A (en) | 2014-12-02 | 2014-12-02 | Dynamic intelligent detection device and detection method for storage battery of electric automobile |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291876A (en) * | 2015-12-02 | 2016-02-03 | 威海广泰空港设备股份有限公司 | Aircraft tractor battery capacity display device and capacity control method |
| CN108700635A (en) * | 2016-03-15 | 2018-10-23 | 株式会社东芝 | Accumulator management device and accumulator cell management method |
| CN109102639A (en) * | 2017-06-20 | 2018-12-28 | 宁波轩悦行电动汽车服务有限公司 | A kind of electric car monitoring method and system |
| CN109102585A (en) * | 2017-06-20 | 2018-12-28 | 宁波轩悦行电动汽车服务有限公司 | A kind of electronic vehicle attitude monitoring method and system |
| CN109828212A (en) * | 2019-02-28 | 2019-05-31 | 苏州工业园区职业技术学院 | A kind of CAN bus based electric car power supply monitoring system |
| CN110018162A (en) * | 2019-03-11 | 2019-07-16 | 绿桥(泰州)生态修复有限公司 | Water quality detecting device |
| CN110261784A (en) * | 2019-06-20 | 2019-09-20 | 河南美力达汽车有限公司 | A kind of electric automobile charging station battery check device |
| CN114216505A (en) * | 2021-12-13 | 2022-03-22 | 成都高斯电子技术有限公司 | Monitoring system and method for electric vehicle |
| CN114441977A (en) * | 2021-12-31 | 2022-05-06 | 重庆特斯联智慧科技股份有限公司 | Robot battery safety monitoring system and monitoring method |
-
2014
- 2014-12-02 CN CN201410720740.2A patent/CN104407301A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291876A (en) * | 2015-12-02 | 2016-02-03 | 威海广泰空港设备股份有限公司 | Aircraft tractor battery capacity display device and capacity control method |
| CN108700635A (en) * | 2016-03-15 | 2018-10-23 | 株式会社东芝 | Accumulator management device and accumulator cell management method |
| EP3432015A4 (en) * | 2016-03-15 | 2019-12-04 | Kabushiki Kaisha Toshiba | Storage cell management device and storage cell management method |
| CN109102639A (en) * | 2017-06-20 | 2018-12-28 | 宁波轩悦行电动汽车服务有限公司 | A kind of electric car monitoring method and system |
| CN109102585A (en) * | 2017-06-20 | 2018-12-28 | 宁波轩悦行电动汽车服务有限公司 | A kind of electronic vehicle attitude monitoring method and system |
| CN109828212A (en) * | 2019-02-28 | 2019-05-31 | 苏州工业园区职业技术学院 | A kind of CAN bus based electric car power supply monitoring system |
| CN110018162A (en) * | 2019-03-11 | 2019-07-16 | 绿桥(泰州)生态修复有限公司 | Water quality detecting device |
| CN110261784A (en) * | 2019-06-20 | 2019-09-20 | 河南美力达汽车有限公司 | A kind of electric automobile charging station battery check device |
| CN114216505A (en) * | 2021-12-13 | 2022-03-22 | 成都高斯电子技术有限公司 | Monitoring system and method for electric vehicle |
| CN114441977A (en) * | 2021-12-31 | 2022-05-06 | 重庆特斯联智慧科技股份有限公司 | Robot battery safety monitoring system and monitoring method |
| CN114441977B (en) * | 2021-12-31 | 2024-04-05 | 重庆特斯联智慧科技股份有限公司 | Robot battery safety monitoring system and monitoring method |
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