CN206012357U - A kind of battery thermal runaway detecting system communicated based on PWM mode - Google Patents
A kind of battery thermal runaway detecting system communicated based on PWM mode Download PDFInfo
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- CN206012357U CN206012357U CN201620485011.8U CN201620485011U CN206012357U CN 206012357 U CN206012357 U CN 206012357U CN 201620485011 U CN201620485011 U CN 201620485011U CN 206012357 U CN206012357 U CN 206012357U
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- thermal runaway
- battery
- pwm
- detector
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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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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The utility model is related to batteries of electric automobile detection technique field, more particularly to a kind of battery thermal runaway detecting system communicated based on PWM mode.Which includes battery management system BMS, whole-control system VCU and the battery thermal runaway detector in battery case；The battery thermal runaway detector is used for gathering the current thermal runaway parameter of each detection node inside battery case and sending the battery management system to；The battery management system is used for receiving the battery thermal runaway parameter that the battery thermal runaway detector sends, and gives the whole-control system by CAN data bus transmissions；Characterized in that, PWM communications modules are additionally provided with the battery thermal runaway detector, the thermal runaway parameter is transferred to by the whole-control system by the PWM communication modules.Its advantage be using PWM communication efficiently solve the problems, such as prior art by CAN network communicate easily block when transmission information is excessive, be disturbed strong.
Description
Technical field
The utility model is related to batteries of electric automobile detection technique field, more particularly to a kind of is communicated based on PWM mode
Battery thermal runaway detecting system.
Background technology
With the popularization of new-energy automobile, people are also increasingly paid close attention to for new-energy automobile, especially new-energy automobile
Safety problem.The security incident of new-energy automobile essentially from burning caused by battery thermal runaway or is exploded.Inside and outside battery
When portion's short circuit, overcharge etc. cause battery temperature too high, easily there is thermal runaway in battery.Energy storage of the battery as new-energy automobile
Unit, if its energy is by burning or blast release, power and its huge easily causes casualties.At present, new energy is improved
The method of source vehicle safety in addition to strengthening protection to battery pack there is no and substantial avoid battery thermal runaway technology from going out
Existing.Strengthen detecting the thermal runaway of battery, early detection go out battery thermal runaway state and when being necessary to battery and
Shi Jinhang thermal runaways suppress or fire control, are the necessary conditions for ensureing new-energy automobile safety trip.
New-energy automobile is typically provided battery thermal runaway detector, battery management system BMS (Battery Management
) and whole-control system VCU (Vehicle Control Unit) System.Battery thermal runaway detector by detect smog,
The parameters such as temperature, gas are judging the thermal runaway situation of battery, and pass through CAN (Controller Area Network) network
Warning message etc. is uploaded to battery management system BMS or whole-control system VCU, and is received the instruction that VCU issues and is started and go out
Fiery device instruction.But fact proved, due to the dispersed placement of battery bag so that whole BMS and battery thermal runaway detector it
Between CAN loop oversize, coupling come in external disturbance can compare many.And due to some parts (such as electric machine controller) itself
CAN lines on control panel have coupled a lot of things so that the interference received outside BMS is also a lot, so actual communication condition
It is exactly that telecommunication circuit and erroneous frame are very more.It can be seen that, may be to battery thermal runaway detecting system in reality based on CAN network communication
Real-time and accuracy in use is impacted, and makes battery thermal runaway detecting system not reach expected purpose.When battery is sent out
When heat is out of control, it is impossible to ensure that BMS or VCU accurately receive warning message in the very first time.
In order to ensure, when battery thermal runaway detector detects emergency generation, to make BMS or VCU by extraneous dry
That disturbed provides accurate feedback, it is necessary to the guarantee communication line that system sets up a redundancy.
Utility model content
The utility model is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of battery thermal runaway communicated based on PWM mode
Detecting system.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：One kind is based on PWM (Pulse-Width
Modulation the battery thermal runaway detecting system that) mode communicates, it is characterised in that including battery management system BMS, car load control
System VCU processed and the battery thermal runaway detector in battery case；
The battery thermal runaway detector is used for the current thermal runaway parameter for gathering each detection node inside battery case
And send the battery management system BMS to；
The battery management system BMS is used for receiving the battery thermal runaway parameter that the battery thermal runaway detector sends,
And the whole-control system VCU is given by CAN data bus transmissions；
PWM communications modules are additionally provided with the battery thermal runaway detector, by the PWM communication modules by institute
State thermal runaway parameter and be transferred to the whole-control system VCU.
The beneficial effects of the utility model are：As thermal runaway detector possesses two kinds of communication modes of PWM and CAN, PWM connects
Mouth can be attached with BMS, VCU, intelligence instrument three's one, transmit thermal runaway warning message and action message.Logical using PWM
Letter equipment is simple, the advantage that low cost, strong antijamming capability, transmission quality are high, is that the reliability service of thermal runaway detecting system is carried
Communication support is supplied.Efficiently solve prior art easily block when transmission information is excessive, be disturbed by CAN network communication
Strong problem.On the other hand, the information that whole-control system VCU will can also be received by two kinds of communication modes of PWM and CAN
Contrasted, to exclude wrong report.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the battery case is provided with multigroup, is equipped with the battery thermal runaway detector in per group of battery case
And battery detection unit, the battery detection unit is used for receiving the battery heat that the battery thermal runaway detector sends accordingly
Parameter out of control is simultaneously processed, and is additionally provided with internal CAN, per group of battery detecting list on the battery management system BMS
Unit is connected with the battery management system BMS by the internal CAN.
It is that new-energy automobile typically can be provided with multigroup battery case, therefore adopt using the beneficial effect of above-mentioned further scheme
After preliminary treatment being carried out with battery detection unit to the information that the battery thermal runaway detector is gathered be then forwarded to the battery
Management system BMS, more suitable for the monitoring management of multigroup battery case.The battery detection unit can be with in-situ processing work(
The microprocessor of energy.
Further, also include intelligence instrument, the battery thermal runaway detector is by the PWM communication modules by the heat
Runaway condition is transferred to the intelligence instrument and is shown.
It is that the battery thermal runaway detector can also pass through intelligence instrument using the beneficial effect of above-mentioned further scheme
Send information to the whole-control system VCU.This control configuring condition for regarding vehicle is selected.
Further, the thermal runaway detector includes data acquisition unit and master control set；
The data acquisition unit is used for gathering the current thermal runaway parameter of each detection node inside battery case and passing
Give master control set；
The data acquisition unit include smokescope sensor, have sensitive nanoparticle structure gas sensor and
Temperature sensor；
The master control set includes core cpu processing module, communication transmission module, performs device control module；
The core cpu processing module, for the current thermal runaway parameter of receiving data harvester transmission, and to described
Current thermal runaway parameter is analyzed process, sets up battery thermal runaway model, judges whether thermal runaway and monitoring thermal runaway occur
Process；
The communication transmission module is PWM communication modules and CAN interface module；
Communication transmission module is used for transmitting own health status, thermal runaway information, action message, and is used for receiving outside life
Order；
The performs device control module, for receiving core cpu processing module signal, and sends to action executing device
The control signal such as voltage and/or electric current, and/or frequency, for starting operation performs device；
The action executing device, including extinguishing device and/or heating/cooling device.
It is that the thermal runaway detector can not only give whole-control system using the beneficial effect of above-mentioned further scheme
VCU real-time Transmission information, but also the emergent fire plant that control signal starts in battery case can be received, it is easy to quick
Response.
Further, also include the control button being connected with the CAN data/address bus.
It is that, by control button, human pilot can be according to full-vehicle control using the beneficial effect of above-mentioned further scheme
The battery detecting situation that system VCU shows, manually starts fire plant.
Description of the drawings
Fig. 1 is principle schematic diagram. of the present utility model；
Principle schematic diagram.s of the Fig. 2 for the multiple battery cases of the utility model；
Fig. 3 is another embodiment of the present utility model；
Fig. 4 is battery thermal runaway detector principle schematic of the present utility model；
Fig. 5 is that pwm signal of the present utility model is produced and combination principle schematic diagram.
In Fig. 1～Fig. 5,1, battery thermal runaway detector；11st, data acquisition unit；12nd, master control set；2nd, cell tube
Reason system BMS；3rd, whole-control system VCU；4th, intelligence instrument；5th, battery case；6th, battery detection unit；7th, control button；8、
Action executing device.
Specific embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
New, it is not intended to limit scope of the present utility model.
As shown in Fig. 1 to Fig. 5, a kind of battery thermal runaway detecting system communicated based on PWM mode, including battery management system
System BMS2, whole-control system VCU3 and the battery thermal runaway detector 1 in battery case 5；
The battery thermal runaway detector 1 is used for the current thermal runaway ginseng for gathering each detection node inside battery case 5
Count and send to the battery management system BMS2；
The battery management system BMS2 is used for receiving the battery thermal runaway ginseng that the battery thermal runaway detector 1 sends
Number, and the whole-control system VCU3 is given by CAN data bus transmissions；
PWM communications modules are additionally provided with the battery thermal runaway detector 1, will by the PWM communication modules
The thermal runaway parameter is transferred to the whole-control system VCU3, battery management system (BMS) 2 or intelligence instrument.
As shown in Fig. 2 adopting the situation of multigroup battery case based on existing new-energy automobile, i.e., described battery case is provided with many
Group, is equipped with the battery thermal runaway detector 1 and battery detection unit 6, the battery detecting list in per group of battery case 5
Unit 6 is used for receiving the battery thermal runaway parameter of the transmission of battery thermal runaway detector 1 accordingly and being processed, the battery
Internal CAN is additionally provided with management system BMS2, and per group of battery detection unit 6 is by the internal CAN and institute
State battery management system BMS2 connections.
As shown in figure 3, also including intelligence instrument 4, the battery thermal runaway detector 1 will by the PWM communication modules
The thermal runaway state transfer is shown to the intelligence instrument 4.
As shown in figure 4, the thermal runaway detector 1 includes data acquisition unit 11 and master control set 12；
The data acquisition unit 11 is used for gathering the current thermal runaway parameter of each detection node inside battery case simultaneously
Send master control set 12 to；
The data acquisition unit 11 includes smokescope sensor, there is the gas sensor of sensitive nanoparticle structure
And temperature sensor；The gas of detection is mainly C0, also includes the gases such as O2, C02, C2H2, CH4.
The master control set 12 includes core cpu processing module 121, communication transmission module 122, performs device control module
123；
The core cpu processing module 121, for the current thermal runaway parameter of the transmission of receiving data harvester 11, and
Process is analyzed to the current thermal runaway parameter, battery thermal runaway model is set up, is judged whether thermal runaway and monitoring occur
Thermal runaway process；
The communication transmission module 122 is PWM communication modules and CAN interface module；
The communication transmission module 122 is used for transmitting own health status, thermal runaway information, action message, and is used for connecing
Receive external command；
The performs device control module 122, for receiving core cpu processing module signal, and to action executing device
The control signals such as voltage and/or electric current, and/or frequency are sent, for starting operation performs device 8；
The action executing device 8, including extinguishing device and/or heating/cooling device.
For artificial quick intervention, also include the control button 7 being connected with the CAN data/address bus.
It is illustrated in figure 5 pwm signal of the present utility model to produce and combination principle schematic diagram, left frame is detected for thermal runaway
Device, right frame are battery management system BMS, whole-control system VCU or intelligence instrument.In figure, two D points represent two equipment altogether
Ground, two C points represent two equipment PWM order wires connections.VD1 is ESD protective device.
Frequency and dutycycle：Level of the single-chip microcomputer by control A points, controls B level points.When A point voltages are equal to 5V, B points
Voltage is equal to 12V.When A point voltages are equal to 0V, B point voltages are equal to 0V.C points are exported for PWM, and connect between C points and B points R3.C
The frequency and dutycycle of point is equal to A points.
Amplitude.R4 and R6 constitutes amplitude voltage-dividing detection circuit, and single-chip microcomputer carries out PWM amplitude detections by measuring E point voltages.
Two functions can be realized by amplitude：
Function one：Testing equipment is accessed.Once accessing, R3 and R7 constitutes bleeder circuit to equipment so that C point voltages are 6V.
Single-chip microcomputer detects C point voltages and is changed into 6V from 12V, then access for equipment.
Function two：Force start button S1 is pressed.S1 is once pressed, and R3 and R7, R8 constitute bleeder circuit so that C points electricity
Press as 4V.Single-chip microcomputer detects C point voltages has 6V to be changed into 4V, then button C1 is pressed.
Different duties are arranged according to states such as present battery normal condition, thermal runaway warning, starting operation performs devices
Than.The fundamental frequency of PWM is set to 2.5Hz, battery normal condition, generation is represented with 97.5%, 50%, 75% dutycycle respectively
Thermal runaway is reported to the police, fire extinguisher starting state.When core cpu processing module judges current warning level according to thermal runaway model
Afterwards, PWM produce circuit according to present battery thermal runaway State Transferring into corresponding pulse duty factor, through drive circuit after, deliver to
Transmission line is received for battery management system BMS, whole-control system VCU or intelligence instrument, after which receives pwm signal through
Shaping and fault-tolerant processing, measure pulse period and width, calculate dutycycle, just correspond to different thermal runaway information.
Preferred embodiment of the present utility model is the foregoing is only, not in order to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements that is made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (4)
1. a kind of battery thermal runaway detecting system communicated based on PWM mode, it is characterised in that including battery management system, whole
Vehicle control and the battery thermal runaway detector in battery case；
The battery thermal runaway detector is used for gathering the current thermal runaway parameter of each detection node inside battery case and passing
Give the battery management system；
The battery management system is used for receiving the battery thermal runaway parameter that the battery thermal runaway detector sends, and by number
The whole-control system is given according to bus transfer；
PWM communications modules are additionally provided with the battery thermal runaway detector, by the PWM communication modules by the heat
Parameter out of control is transferred to the whole-control system；
The thermal runaway detector includes data acquisition unit and master control set；
The data acquisition unit is used for gathering the current thermal runaway parameter of each detection node inside battery case and sending to
Master control set；
The data acquisition unit includes smokescope sensor, the gas sensor with sensitive nanoparticle structure and temperature
Sensor；
The master control set includes core cpu processing module, communication transmission module, performs device control module；
The core cpu processing module, for the current thermal runaway parameter of receiving data harvester transmission, and to described current
Thermal runaway parameter is analyzed process, sets up battery thermal runaway model, judges whether thermal runaway and monitoring thermal runaway process occur；
The communication transmission module is PWM communication modules and CAN interface module；
The performs device control module, for receiving core cpu processing module signal, and sends voltage to action executing device
And/or electric current, and/or frequency control signal, for starting operation performs device；
The action executing device, including extinguishing device and/or heating/cooling device.
2. according to claim 1 based on PWM mode communicate battery thermal runaway detecting system, it is characterised in that described
Battery case is provided with multigroup, is equipped with the battery thermal runaway detector and battery detection unit in per group of battery case, described
Battery detection unit is used for receiving the battery thermal runaway parameter of the battery thermal runaway detector transmission accordingly and being processed,
Be additionally provided with internal CAN on the battery management system, per group of battery detection unit by the internal CAN with
The battery management system connection.
3. according to claim 1 based on PWM mode communicate battery thermal runaway detecting system, it is characterised in that also wrap
Intelligence instrument is included, the battery thermal runaway detector is by the PWM communication modules by the thermal runaway state transfer to described
Intelligence instrument is shown.
4. according to claim 2 based on PWM mode communicate battery thermal runaway detecting system, it is characterised in that also wrap
Include the control button being connected with the internal CAN.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620485011.8U CN206012357U (en) | 2016-05-25 | 2016-05-25 | A kind of battery thermal runaway detecting system communicated based on PWM mode |
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| CN201620485011.8U CN206012357U (en) | 2016-05-25 | 2016-05-25 | A kind of battery thermal runaway detecting system communicated based on PWM mode |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015161A (en) * | 2017-06-12 | 2017-08-04 | 烟台创为新能源科技有限公司 | It is a kind of to prevent the program control system of battery thermal runaway detecting system error starting |
| CN110828920A (en) * | 2019-11-25 | 2020-02-21 | 中国船舶重工集团公司第七0四研究所 | Ship lithium iron phosphate battery system and its thermal runaway prevention and control method |
| CN111856292A (en) * | 2019-04-03 | 2020-10-30 | 北京车和家信息技术有限公司 | Method and device for determining ignition part of battery pack |
| CN111886751A (en) * | 2018-07-04 | 2020-11-03 | 宝马股份公司 | Battery management system for a high-voltage battery of a motor vehicle, high-voltage battery and motor vehicle |
| US10877011B2 (en) | 2016-06-29 | 2020-12-29 | Nexceris, Llc | Systems and methods for monitoring for a gas analyte |
| CN112477687A (en) * | 2019-09-11 | 2021-03-12 | 重庆长安新能源汽车科技有限公司 | Thermal runaway early warning system for power storage battery of electric automobile |
| CN113054265A (en) * | 2019-12-27 | 2021-06-29 | 北京新能源汽车股份有限公司 | Battery thermal control method and system and automobile |
| CN113119737A (en) * | 2021-04-28 | 2021-07-16 | 中国第一汽车股份有限公司 | Power battery thermal runaway monitoring device and method and power battery system |
-
2016
- 2016-05-25 CN CN201620485011.8U patent/CN206012357U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10877011B2 (en) | 2016-06-29 | 2020-12-29 | Nexceris, Llc | Systems and methods for monitoring for a gas analyte |
| CN107015161A (en) * | 2017-06-12 | 2017-08-04 | 烟台创为新能源科技有限公司 | It is a kind of to prevent the program control system of battery thermal runaway detecting system error starting |
| CN107015161B (en) * | 2017-06-12 | 2019-09-10 | 烟台创为新能源科技有限公司 | A kind of program control system preventing battery thermal runaway detection system error starting |
| CN111886751A (en) * | 2018-07-04 | 2020-11-03 | 宝马股份公司 | Battery management system for a high-voltage battery of a motor vehicle, high-voltage battery and motor vehicle |
| CN111856292A (en) * | 2019-04-03 | 2020-10-30 | 北京车和家信息技术有限公司 | Method and device for determining ignition part of battery pack |
| CN111856292B (en) * | 2019-04-03 | 2023-08-15 | 北京车和家信息技术有限公司 | Method and device for determining ignition position of battery pack |
| CN112477687A (en) * | 2019-09-11 | 2021-03-12 | 重庆长安新能源汽车科技有限公司 | Thermal runaway early warning system for power storage battery of electric automobile |
| CN110828920A (en) * | 2019-11-25 | 2020-02-21 | 中国船舶重工集团公司第七0四研究所 | Ship lithium iron phosphate battery system and its thermal runaway prevention and control method |
| CN113054265A (en) * | 2019-12-27 | 2021-06-29 | 北京新能源汽车股份有限公司 | Battery thermal control method and system and automobile |
| CN113119737A (en) * | 2021-04-28 | 2021-07-16 | 中国第一汽车股份有限公司 | Power battery thermal runaway monitoring device and method and power battery system |
| CN113119737B (en) * | 2021-04-28 | 2023-02-21 | 中国第一汽车股份有限公司 | Power battery thermal runaway monitoring device and method and power battery system |
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Address after: 264006 Shandong city of Yantai Province Economic and Technological Development Zone Jinsha River Road No. 163 Patentee after: Yantai Chuangwei New Energy Technology Co.,Ltd. Address before: 264006 Shandong city of Yantai Province Economic and Technological Development Zone Jinsha River Road No. 163 Patentee before: YANTAI CHUNGWAY NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yantai Yida Financial Leasing Co.,Ltd. Assignor: Yantai Chuangwei New Energy Technology Co.,Ltd. Contract record no.: X2020980008903 Denomination of utility model: A battery thermal runaway detection system based on PWM communication Granted publication date: 20170315 License type: Exclusive License Record date: 20201208 |
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Denomination of utility model: A battery thermal runaway detection system based on PWM communication Effective date of registration: 20201210 Granted publication date: 20170315 Pledgee: Yantai Yida Financial Leasing Co.,Ltd. Pledgor: Yantai Chuangwei New Energy Technology Co.,Ltd. Registration number: Y2020980009068 |
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Assignee: Yantai Yida Financial Leasing Co.,Ltd. Assignor: Yantai Chuangwei New Energy Technology Co.,Ltd. Contract record no.: X2020980008903 Date of cancellation: 20231030 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
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Date of cancellation: 20231031 Granted publication date: 20170315 Pledgee: Yantai Yida Financial Leasing Co.,Ltd. Pledgor: Yantai Chuangwei New Energy Technology Co.,Ltd. Registration number: Y2020980009068 |
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