CN105841842A - Battery temperature monitoring device based on optical fiber sensor network - Google Patents
Battery temperature monitoring device based on optical fiber sensor network Download PDFInfo
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- CN105841842A CN105841842A CN201610328229.7A CN201610328229A CN105841842A CN 105841842 A CN105841842 A CN 105841842A CN 201610328229 A CN201610328229 A CN 201610328229A CN 105841842 A CN105841842 A CN 105841842A
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- optical fiber
- monitoring device
- device based
- temperature monitoring
- battery
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 46
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 claims description 47
- 230000003287 optical effect Effects 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000010261 cell growth Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011551 heat transfer agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a battery temperature monitoring device based on an optical fiber sensor network. The device comprises a modulatable broadband light source, a light circulator, a battery group with at least one electric core, an optical fiber grating placed in each electric core, delay optical fibers, optical fiber coupling devices, a multi-channel wavelength filter, a detector group and a control acquisition module, wherein the delay optical fibers and the optical fiber coupling devices are placed between electric cores. The light circulator is provided with three ports which are respectively connected with the broadband light source, the battery group and the filter. The filter is connected with the detector group. The control acquisition module is connected with the detector group and the broadband light source. According to the battery temperature monitoring device based on the optical fiber sensor network, which is provided by the invention, an optical fiber grating is placed in each electric core of the battery group to effectively monitor the state of each electric core in the battery group.
Description
Technical field
The present invention relates to the optical fiber sensing technology application in cell safety field, particularly relate to a kind of battery temperature monitoring device based on optical fiber sensing network.
Background technology
Environmental pollution and energy crisis become the two large problems instantly developed, and electric automobile, with its unique advantage such as environmental protection, energy-saving and emission-reduction, has obtained the attention of Global Auto manufacturer.Battery is as the key point of motorcar electric technology; use safety and the development prospect of electric automobile are significant by its performance; inside battery; due to short circuit, overcharge and mainly show as the expansion of the overheated of inside battery and housing with the security incident caused by material degeneration; for set of cells, the abnormal state of certain battery can cause the decline of set of cells overall efficiency.Visible realization is most important to the monitoring in real time of each battery core internal temperature.
Due to optical fiber have that volume is little, light weight, passive, pressure, the corrosion-resistant and feature of electromagnetism interference, Fibre Optical Sensor, in the application of some special dimensions, in the scenes such as Oil/Gas Pipe, nuclear power station, Oil Tank, possesses obvious advantage.Same, Fibre Optical Sensor is equally applicable for the temperature monitoring of inside battery.
But, the situation of each battery core of internal battery pack is not effectively detected and monitors by existing battery detection technology, when battery performance declines, it is impossible to judgement is that wherein which battery status occurs abnormal.
Therefore, it is necessary to design a kind of new battery temperature monitoring device, to solve the problems referred to above.
Summary of the invention
It is an object of the invention to provide a kind of battery temperature monitoring device based on optical fiber sensing network, it is intended to for solving the problem that the situation of each battery core of internal battery pack is not effectively monitored by existing battery detection technology.
The present invention is achieved in that
The present invention provides a kind of battery temperature monitoring device based on optical fiber sensing network, it is characterized in that, including: modulated wideband light source, optical circulator, comprise the set of cells of at least one battery core, it is placed in the fiber grating within each battery core, the time delay optical fiber being placed between battery core and fiber coupler, the wave filter of multi-channel wavelength, detector set and control acquisition module, described optical circulator has three ports and connects described wideband light source respectively, described set of cells and described wave filter, described wave filter is also connected with described detector set, described control acquisition module is connected with described detector set and described wideband light source respectively.
Further, the reflection bandwidth of described fiber grating is less than 0.2 nanometer.
Further, the peak reflectivity of described fiber grating controls at 1%-5%.
Further, being provided with multiple fiber grating inside each described battery core, the multiple fiber gratings within same battery core use the mode of wavelength-division multiplex to arrange, and the wavelength of the multiple fiber gratings within the most same battery core is different.
Further, the different wavelength channel of described wave filter correspond to different fiber gratings, and the width of each passage correspond to the wavelength variation range of each fiber grating.
Further, described time delay optical fiber uses the mode around shape to arrange.
Further, the length limitation of described time delay optical fiber is in below 20m.
Further, after described wideband light source is modulated by described control acquisition module, the length of the light pulse of output is corresponding with the length of described time delay optical fiber.
Further, whole described internal battery pack uses the simple optical fiber inscribing optical grating construction continuously.
Further, described set of cells has a housing, and described housing is provided with fiber grating.
The method have the advantages that
The battery temperature monitoring device based on optical fiber sensing network of the present invention is equipped with fiber grating inside each battery core of set of cells, the situation of each battery core in set of cells effectively can be monitored, thus when battery performance declines, it is possible to judgement is that wherein which battery status occurs abnormal.
Accompanying drawing explanation
The schematic diagram of the battery temperature monitoring device based on optical fiber sensing network that Fig. 1 provides for the embodiment of the present invention.
In accompanying drawing, to represent implication as follows for each label:
1-wideband light source, 2-optical circulator, 3-fiber grating, 4-battery core, 5-time delay optical fiber, 6-control acquisition module, 7-detector set, 8-wave filter, 9-housing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Such as Fig. 1, the embodiment of the present invention provides a kind of battery temperature monitoring device based on optical fiber sensing network, including: modulated wideband light source 1, optical circulator 2, comprise the set of cells of three battery cores 4, the housing 9 being placed in outside described set of cells, it is placed in the fiber grating 3 on each battery core 4 inside and described housing 9, the time delay optical fiber 5 being placed between battery core 4, fiber coupler (not shown), the wave filter 8 of multi-channel wavelength, detector set 7 and control acquisition module 6, described optical circulator 2 has three ports and connects described wideband light source 1 respectively, described set of cells and described wave filter 8, described wave filter 8 is also connected with described detector set 7, described control acquisition module 6 is connected with described detector set 7 and described wideband light source 1 respectively.Wherein, described wideband light source 1 can provide the spectral band met needed for described fiber grating 3 reflectance spectrum, described control acquisition module 6 can carry out electric current control to described wideband light source 1, modulates described wideband light source 1 output optical pulse, and these functions utilize routine techniques to realize.
Described fiber grating 3 is the weak reflecting grating of narrow bandwidth, and the reflection bandwidth of the most described fiber grating 3 is less than 0.2 nanometer, and peak reflectivity controls at 1%-5%.Each described battery core 4 is internal is provided with multiple fiber grating 3, thus multiple nodes of each battery core 4 are carried out the monitoring of temperature and stress, described fiber grating 3 is arranged in battery core 4 internal material, battery electrode, chemical reaction zone, battery housing 9 etc. and is susceptible to the position of short circuit, overheating deforming, due to good chemical property such as the passive of optical fiber and insulation, described fiber grating 3 can also be placed in other positions needing monitoring.Multiple fiber gratings 3 within same battery core 4 use the mode of wavelength-division multiplex to arrange, and the wavelength of the multiple fiber gratings 3 within the most same battery core 4 is different, it is thus possible to make a distinction the fiber grating 3 of diverse location according to wavelength.Described time delay optical fiber 5 is placed between battery core 4, and its length limitation is in below 20m, and uses the mode around shape to arrange, to ensure that time delay optical fiber 5 can preferably be embedded in the middle of different battery.The length of the light pulse that described wideband light source 1 exports after being modulated by described control acquisition module 6 is corresponding with the length of described time delay optical fiber 5, to ensure that the light pulse returned by different battery core 4 internal reflections can mutually be distinguished.Whole described internal battery pack uses the simple optical fiber inscribing optical grating construction continuously to realize the monitoring to internal battery pack temperature Yu stress, reduces the complexity of cell safety monitoring system.Isolation processing is carried out, to guarantee the sourceless characteristic of sensor ends between described wideband light source 1, described fiber coupler (not shown), described wave filter 8, described detector set 7 and described control acquisition module 6 and the optical fiber of described internal battery pack.
The different wavelength channel of described wave filter 8 correspond to different fiber gratings 3, the wavelength variation range of each fiber grating 3 is correspond to during the width design of each passage, the Wavelength-encoding information of fiber grating 3 is converted to intensity coding information by each passage, the wave length shift information of the most described fiber grating 3 is converted between the change of light intensity, and the output intensity of described wave filter 8 with the wavelength value of described fiber grating 3 the most corresponding by described wave filter 8.
Described control acquisition module 6 includes data acquisition end and control module, at data acquisition end, after control module modulation wideband light source 1 produces light pulse, by accurate timing, it is possible to be acquired the optical signal of different battery cores 4 exactly at collection terminal.Each time after pulse collection, according to the pulse sequence gathered, distinguish the battery core 4 belonging to fiber grating 3, the internal different fiber grating 3 of single battery core 4 can be distinguished according to the wavelength channel residing for signal.Corresponding signal is carried out except making an uproar and after other process, carrying out the judgement of fiber grating 3 wavelength according to gained strength information, judge its heat transfer agent further, such as the change of the parameter such as temperature, stress.
The parameter of described fiber grating 3 monitoring mainly includes internal battery pack temperature and STRESS VARIATION, but is not limited to this, it is also possible to include other parameters.Battery core 4 temperature is mainly used in monitoring its internal short-circuit and chemical substance situation, the deformation that STRESS VARIATION then causes for monitoring battery core 4 to expand, and single fiber grating 3 is responsible for the monitoring of single parameter.Fiber grating 3 can be affected by temperature and cell expansion simultaneously, for the purpose of the present invention without carrying out the differentiation of temperature and strain, when the wavelength shift indicated by the change of light intensity exceedes certain threshold value, then show that variations in temperature and the deformation of inside battery already more than safety range, now will carry out communication with battery control unit, and set of cells will be carried out the safety operations such as power-off.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. a battery temperature monitoring device based on optical fiber sensing network, it is characterized in that, including: modulated wideband light source, optical circulator, comprise the set of cells of at least one battery core, it is placed in the fiber grating within each battery core, the time delay optical fiber being placed between battery core and fiber coupler, the wave filter of multi-channel wavelength, detector set and control acquisition module, described optical circulator has three ports and connects described wideband light source respectively, described set of cells and described wave filter, described wave filter is also connected with described detector set, described control acquisition module is connected with described detector set and described wideband light source respectively.
2. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1, it is characterised in that: the reflection bandwidth of described fiber grating is less than 0.2 nanometer.
3. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1 or 2, it is characterised in that: the peak reflectivity of described fiber grating controls at 1%-5%.
4. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1, it is characterized in that: inside each described battery core, be provided with multiple fiber grating, multiple fiber gratings within same battery core use the mode of wavelength-division multiplex to arrange, and the wavelength of the multiple fiber gratings within the most same battery core is different.
5. the battery temperature monitoring device based on optical fiber sensing network as described in claim 1 or 4, it is characterized in that: the different wavelength channel of described wave filter correspond to different fiber gratings, the width of each passage correspond to the wavelength variation range of each fiber grating.
6. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1, it is characterised in that: described time delay optical fiber uses the mode around shape to arrange.
7. the battery temperature monitoring device based on optical fiber sensing network as described in claim 1 or 6, it is characterised in that: the length limitation of described time delay optical fiber is in below 20m.
8. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1, it is characterised in that: the length of the light pulse that described wideband light source exports after being modulated by described control acquisition module is corresponding with the length of described time delay optical fiber.
9. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1, it is characterised in that: whole described internal battery pack uses the simple optical fiber inscribing optical grating construction continuously.
10. battery temperature monitoring device based on optical fiber sensing network as claimed in claim 1, it is characterised in that: described set of cells has a housing, and described housing is provided with fiber grating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610328229.7A CN105841842A (en) | 2016-05-18 | 2016-05-18 | Battery temperature monitoring device based on optical fiber sensor network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610328229.7A CN105841842A (en) | 2016-05-18 | 2016-05-18 | Battery temperature monitoring device based on optical fiber sensor network |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768475A (en) * | 2016-12-28 | 2017-05-31 | 上海长园维安电子线路保护有限公司 | The temperature-measuring control device and its method of novel battery and assembled battery |
| CN107677391A (en) * | 2017-10-30 | 2018-02-09 | 深圳伊讯科技有限公司 | A kind of battery temperature sensor |
| CN107796529A (en) * | 2017-10-18 | 2018-03-13 | 深圳伊讯科技有限公司 | A kind of distributed optical fiber temperature measuring method and system |
| CN108539306A (en) * | 2018-07-03 | 2018-09-14 | 华霆（合肥）动力技术有限公司 | Battery modules, supply unit and cell safety detection device |
| CN109580039A (en) * | 2019-01-31 | 2019-04-05 | 武汉理工大学 | Battery temperature based on intensive fiber grating temperature sensor monitors system |
| CN109683095A (en) * | 2017-10-18 | 2019-04-26 | 奥动新能源汽车科技有限公司 | The fault detection method and system of battery pack |
| CN110261005A (en) * | 2019-07-29 | 2019-09-20 | 南昌航空大学 | A kind of fiber optic network new energy battery temperature monitoring system |
| CN111982347A (en) * | 2020-07-07 | 2020-11-24 | 傲普(上海)新能源有限公司 | FBG temperature measurement method suitable for energy storage battery |
| CN113108955A (en) * | 2021-03-31 | 2021-07-13 | 江苏集萃华科智能装备科技有限公司 | Device and method for monitoring stress of electrode material in battery and application |
| CN113865743A (en) * | 2021-10-13 | 2021-12-31 | 广东感芯激光科技有限公司 | Optical fiber distributed battery multipoint temperature measurement system and application |
| CN116773042A (en) * | 2023-08-16 | 2023-09-19 | 中石油深圳新能源研究院有限公司 | Battery module temperature detection method, system and storage medium |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768475A (en) * | 2016-12-28 | 2017-05-31 | 上海长园维安电子线路保护有限公司 | The temperature-measuring control device and its method of novel battery and assembled battery |
| CN107796529A (en) * | 2017-10-18 | 2018-03-13 | 深圳伊讯科技有限公司 | A kind of distributed optical fiber temperature measuring method and system |
| CN109683095A (en) * | 2017-10-18 | 2019-04-26 | 奥动新能源汽车科技有限公司 | The fault detection method and system of battery pack |
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| CN108539306A (en) * | 2018-07-03 | 2018-09-14 | 华霆（合肥）动力技术有限公司 | Battery modules, supply unit and cell safety detection device |
| CN109580039A (en) * | 2019-01-31 | 2019-04-05 | 武汉理工大学 | Battery temperature based on intensive fiber grating temperature sensor monitors system |
| CN110261005A (en) * | 2019-07-29 | 2019-09-20 | 南昌航空大学 | A kind of fiber optic network new energy battery temperature monitoring system |
| CN111982347A (en) * | 2020-07-07 | 2020-11-24 | 傲普(上海)新能源有限公司 | FBG temperature measurement method suitable for energy storage battery |
| CN113108955A (en) * | 2021-03-31 | 2021-07-13 | 江苏集萃华科智能装备科技有限公司 | Device and method for monitoring stress of electrode material in battery and application |
| CN113865743A (en) * | 2021-10-13 | 2021-12-31 | 广东感芯激光科技有限公司 | Optical fiber distributed battery multipoint temperature measurement system and application |
| CN116773042A (en) * | 2023-08-16 | 2023-09-19 | 中石油深圳新能源研究院有限公司 | Battery module temperature detection method, system and storage medium |
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Application publication date: 20160810 |