CN105758432A - Lithium battery safety monitoring system - Google Patents
Lithium battery safety monitoring system Download PDFInfo
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- CN105758432A CN105758432A CN201610007757.2A CN201610007757A CN105758432A CN 105758432 A CN105758432 A CN 105758432A CN 201610007757 A CN201610007757 A CN 201610007757A CN 105758432 A CN105758432 A CN 105758432A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 52
- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 230000003287 optical effect Effects 0.000 claims abstract description 121
- 239000000835 fiber Substances 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims description 18
- 239000013307 optical fiber Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 150000002641 lithium Chemical class 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 231100000279 safety data Toxicity 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a lithium battery safety monitoring system, which comprises a signal control module and a lithium battery module, wherein the lithium battery module comprises a plurality of battery units; each battery unit is embedded with a fiber sensor; the signal control module provides an original optical signal for the lithium battery module, the original optical signal is modulated via the fiber sensor of the corresponding battery unit and is then reflected to the signal control module, the signal control module demodulates the received optical signal, and data for corresponding to-be-monitored information are determined according to the wavelength drift of the demodulated optical signal. Through the lithium battery module provided with the sensors and the signal control module, intrinsic data such as the temperature, the pressure, the vibration, the displacement deformation, positive and negative pole piece position changes and the like inside a cathode mix can be monitored, the detected and acquired data can more truly and objectively reflect the actual conditions of the cathode mix inside the battery, and more accurate data are provided for safety application of a power battery.
Description
Technical field
The present invention relates to battery detection field, be more particularly to a kind of lithium battery safety monitoring system.
Background technology
Environmental pollution and energy crisis become the two large problems instantly developed, and therefore motorcar electric technology is with its unique advantage such as environmental protection, energy-saving and emission-reduction, obtains and studies widely.Battery is as the key point of motorcar electric technology, and use safety and the development prospect of electric automobile are had significant impact by its performance.The battery that automobile is conventional is lithium battery, is an emphasis of safety monitoring to the heat management of lithium battery.Routine monitoring sensor carries out the monitoring in temperature mainly for battery entirety, it is impossible to realizing the temperature of each cell internal is monitored in real time, existing monitoring method also cannot realize the monitoring to lithium battery interior deformation simultaneously.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is how to detect temperature and the deformation of lithium battery interior in real time.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of lithium battery safety monitoring system, described system includes signal and controls module and lithium battery module；Described lithium battery module includes several battery units, and each described battery unit is all embedded with Fibre Optical Sensor；
Described signal controls module provides original optical signal to described lithium battery module, described original optical signal forms modulation optical signal after the described Fibre Optical Sensor modulation of corresponding battery unit, described modulation optical signal is reflected back described signal and controls module, described signal controls module and is demodulated the described modulation optical signal of its reception being formed and solves dim signal, and determines the data of the information to be monitored of correspondence according to the wave length shift degree of described solution dim signal.
Preferably, the outer surface of described Fibre Optical Sensor is provided with protective layer, and described Fibre Optical Sensor is embedded into the inside of battery of described battery unit.
Preferably, the battery of described battery unit is laminated lithium battery or coiling type lithium battery.
Preferably, described lithium battery module also includes several battery blocks, and each described battery block all includes several described battery units.
Preferably, described signal control module includes light source submodule, optical circulator submodule, photoswitch submodule and signal acquisition process submodule；
Described light source submodule produces described original optical signal, and described original optical signal is inputted in described optical circulator submodule, described original optical signal is made a gift to someone described photoswitch submodule by described optical circulator submodule, described original optical signal is sent in corresponding described battery block by described photoswitch submodule, described primary signal is modulated by described battery unit corresponding in described battery block, described signal acquisition process submodule is entered through described photoswitch submodule successively and optical circulator submodule after the described battery unit reflection that the described modulation optical signals that formed is corresponding, the described modulation optical signal of its reception is demodulated being formed and solves dim signal by described signal acquisition process submodule, and the data of the information to be monitored of correspondence are determined according to the wave length shift degree of described solution dim signal.
Preferably, described photoswitch submodule includes time division multiplex Multichannel photoswitch, and the described original optical signal timesharing of its reception is sent in each described battery block by described time division multiplex Multichannel photoswitch.
Preferably, each described battery block all includes at least one optical fiber, and is arranged at intervals with several Fibre Optical Sensors with different reflection wavelength on every described optical fiber, and each described Fibre Optical Sensor lays respectively in a described battery unit.
Preferably, described Fibre Optical Sensor be fiber-optic grating sensor, based on the full-fiber sensor of intermembranous interference or micro-nano sensor.
Preferably, described Fibre Optical Sensor is measure the Fibre Optical Sensor of temperature or measure the Fibre Optical Sensor of deformation.
Preferably, described light source submodule includes SLED light source.
(3) beneficial effect
The invention provides a kind of lithium battery safety monitoring system, the system of the present invention includes signal and controls module and lithium battery module；Lithium battery module includes several battery units, and each battery unit is all embedded with Fibre Optical Sensor.Signal controls module provides original optical signal to lithium battery module, original optical signal controls a module through the Fibre Optical Sensor modulation back reflection letter in reply number of corresponding battery unit, signal controls module and the optical signal of its reception is demodulated, and determines the data of the information to be monitored of correspondence according to the wave length shift degree demodulating the optical signal obtained.The present invention is by controlling module achieve intrinsic data such as the temperature within battery core, pressure, vibrations, Displacement-deformation, both positive and negative polarity pole piece change in location with the lithium battery module of sensor, signal, so that detecting the practical situation of the inside battery battery core of the data more objective obtained, the safety applications for electrokinetic cell provides data more accurately..Additionally, the system of the present invention is provided with time division multiplex Multichannel photoswitch, such that it is able to realize the timesharing of multiple battery blocks is monitored, realize the comprehensive monitoring to lithium battery, a present invention optical fiber in each battery block is provided with the Fibre Optical Sensor with different reflection wavelength simultaneously, each Fibre Optical Sensor belongs to different battery units, therefore achieve in conjunction with wavelength-division multiplex technique and by different reflection wavelengths, each battery unit is monitored, and then realize the internal state under battery unit duties different in same battery block is monitored.
The characteristics such as Fibre Optical Sensor has a certainty of measurement height, compact conformation, corrosion-resistant, passive make to be embedded in each battery unit, therefore can Fibre Optical Sensor art be applied to completely in the security performance management of lithium battery.The present invention is embedded in each lithium cells by Fibre Optical Sensor, and carries out networking in conjunction with wavelength-division, time-division multiplex technology, thus realizing the monitoring to lithium battery interior temperature, deformation etc..This time-division, wavelength-division mixing the technology very big dilatation layout of Fibre Optical Sensor, be also beneficial to the monitoring lithium battery various changes at work of three-dimensional.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the lithium battery safety monitoring system structural representation of the present invention；
Fig. 2 is the structural representation of the Fibre Optical Sensor being provided with protective layer in the present invention；
Fig. 3 A is the structural representation of laminated lithium battery in the present invention
Fig. 3 B is the structural representation of coiling type lithium battery in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.Following example are used for illustrating the present invention, but can not be used for limiting the scope of the present invention.
A kind of lithium battery safety monitoring system, as it is shown in figure 1, described system includes signal controls module 1 and lithium battery module 2；Described lithium battery module 2 includes several battery units 8, and each described battery unit is all embedded with Fibre Optical Sensor 9；Described signal controls module 1 provides original optical signal to described lithium battery module 2, described original optical signal forms modulation optical signal after described Fibre Optical Sensor 9 modulation of corresponding battery unit 8, described modulation optical signal is reflected back described signal and controls module 1, described signal controls module 1 and is demodulated the described modulation optical signal of its reception being formed and solves dim signal, and determines the data of the information to be monitored of correspondence according to the wave length shift degree of described solution dim signal.
Said system achieves the real-time monitoring to internal temperature of battery by being embedded in battery by Fibre Optical Sensor, utilize Fibre Optical Sensor can also monitor the deformation etc. of inside battery in real time simultaneously, thus realizing the monitoring to lithium battery safety, such that it is able to improve the use degree of safety of lithium battery.
In recent years, distributing optical fiber sensing is highly sensitive with it, passive, electromagnetism interference, pressure-resistant corrosion-resistant, the advantage such as light weight volume is little, multiplexing capacity is strong, is widely used in the middle of the health monitoring of the heavy construction such as dam, bridge.The particularly feature such as its corrosion-resistant, passive, electromagnetism interference so that it is have the advantage that other sensors (electric sensor etc.) are incomparable in the application scenarios such as colliery, petroleum pipeline, long-distance transmission line.Bragg grating, by series of advantages such as the preparation method of mature and reliable, corrosion-resistant, electromagnetism interference, compact conformations, becomes the sensing unit being most widely used in optical fiber sensing network.When the parameters such as the stress of fiber grating local environment, temperature change, the change of screen periods or its effective refractive index can be caused, and then optical grating reflection wavelength is drifted about on spectral domain；The perception being achieved in environment to external world is measured.Therefore the present invention adopts Fibre Optical Sensor to carry out the measurement of internal temperature of battery, deformation.
Further, the outer surface of described Fibre Optical Sensor 9 is provided with protective layer, and described Fibre Optical Sensor is embedded into the inside of battery of described battery unit 8.As in figure 2 it is shown, the structure being preferably set up the Fibre Optical Sensor 9 of matcoveredn is: include the first macromolecule membrane 11, Fibre Optical Sensor rete 12 and the second macromolecule membrane 13 that are sequentially overlapped；Wherein said Fibre Optical Sensor rete 12 is provided with several Fibre Optical Sensors 9, and is attached on described first macromolecule membrane 11.
Further, the battery of described battery unit 8 is laminated lithium battery or coiling type lithium battery, but is not limited to this.
As shown in Figure 3A; coiling type lithium battery includes: housing 25, the battery core being placed in described housing 25, the Fibre Optical Sensor polymer compound film 24 that is placed in described battery core, i.e. the above-mentioned Fibre Optical Sensor 9 being provided with protective layer and constitute the block 26 closing space with described housing 25；Wherein, described Fibre Optical Sensor polymer compound film 24 is for monitoring the intrinsic safety data variation within described battery core, and exports.
At least include inside the battery core of battery: positive plate 22, negative plate 23 and be placed in the barrier film 21 between described positive plate 22 and described negative plate 23.Wherein, the battery core in the embodiment of the present invention illustrates for one group of positive plate 22, negative plate 23 and barrier film 21, but is not limited thereto.
As shown in Figure 3 B; laminated lithium battery from top to bottom stacks positive plate 27, barrier film 28, negative plate 29, barrier film 30, Fibre Optical Sensor polymer compound film 31 successively; the i.e. above-mentioned Fibre Optical Sensor 9 being provided with protective layer and positive plate 32, wherein Fibre Optical Sensor polymer compound film 31 is placed between barrier film 30 and positive plate 32 by the mode of lamination.
Further, described lithium battery module 2 also includes several battery blocks 7, and each described battery block 7 all includes several described battery units 8.
Further, described signal control module 1 includes light source submodule 3, optical circulator submodule, photoswitch submodule and signal acquisition process submodule 6；Described light source submodule 3 produces described original optical signal, and described original optical signal is inputted in described optical circulator submodule, described original optical signal is made a gift to someone described photoswitch submodule by described optical circulator submodule, described original optical signal is sent in corresponding described battery block by described photoswitch submodule, described primary signal is modulated by described battery unit corresponding in described battery block, described signal acquisition process submodule is entered through described photoswitch submodule successively and optical circulator submodule after the described battery unit reflection that the described modulation optical signals that formed is corresponding, the described modulation optical signal of its reception is demodulated being formed and solves dim signal by described signal acquisition process submodule, and the data of the information to be monitored of correspondence are determined according to the wave length shift degree of described solution dim signal.Preferably, described photoswitch submodule includes time division multiplex Multichannel photoswitch 5, and the described original optical signal timesharing of its reception is sent in each described battery block 7 by described time division multiplex Multichannel photoswitch 5.The present invention is by arranging time division multiplex Multichannel photoswitch 5, such that it is able to realize the timesharing of multiple battery blocks is monitored, it is achieved the comprehensive monitoring to lithium battery.
Further, each described battery block 7 all includes at least one optical fiber, and every described optical fiber is arranged at intervals with several Fibre Optical Sensors with different reflection wavelength, each described Fibre Optical Sensor lays respectively in a described battery unit, and the optical fiber being provided with several Fibre Optical Sensors forms Fibre Optical Sensor link 10.The present invention is by being provided with the Fibre Optical Sensor with different reflection wavelength on an optical fiber in each battery block, achieve in conjunction with wavelength-division multiplex technique and by different reflection wavelengths, each battery unit is monitored, and then realize the internal state under battery unit duties different in same battery block is monitored.
On Fibre Optical Sensor link 10 designs, introduce wavelength-division multiplex technique and carry out sensing dilatation.It shows as the Fibre Optical Sensor arranging different center reflection wavelength in each battery unit cell in same battery block pack, for instance fiber-optic grating sensor.Specifically, the fiber-optic grating sensor of a string different wave length of equally spaced inscription over the same fiber；Guide with lug and come in and go out, respectively the fiber-optic grating sensor of each different reflection wavelengths is embedded in each battery unit cell.So, on wavelength domain, by different reflection wavelengths, each battery unit cell is differentiated, and then realize the internal state under different units cell work in same battery block pack is monitored.
Each battery block pack adopts identical Fibre Optical Sensor link, say, that by wavelength-division multiplex technique, the fiber-optic grating sensor in each cell unit in same cell p ack is distinguish between；Simultaneously by time-division multiplex technology, the sensor monitoring of each cell p ack is made a distinction.This time-division, wavelength-division mixing the technology very big dilatation layout of Fibre Optical Sensor unit, the networking of the Fibre Optical Sensor to magnanimity can be realized, and then realize Large Copacity, many reference amounts distributing optical fiber sensing application, be also beneficial to three-dimensional monitoring lithium battery various changes at work.
Further, described Fibre Optical Sensor 9 be fiber-optic grating sensor, based on the full-fiber sensor of intermembranous interference or micro-nano sensor.
Preferably by fiber-optic grating sensor, fiber-optic grating sensor specific wavelength is utilized to reflect this characteristic to carry out the monitoring of the change such as internal temperature of battery, strain.Specifically, owing to fiber-optic grating sensor has the advantages such as lightweight, volume be little, corrosion-resistant, it can be embedded directly in each battery unit cell.In reality, the fiber grating after coating protection encapsulation being inconjunction with tail optical fiber and is embedded on medial septum, such fiber-optic grating sensor will by the disturbance of inside battery small strain；Introduce and derive optical fiber and then guide turnover with lug.When battery operated, internal temperature of battery changes and even suddenlys change, and the reflection wavelength making fiber-optic grating sensor is sharply drifted about by the change of this caused surrounding；By the demodulation to reflection light, it is achieved the monitoring to battery temperature characteristic.
The deformation of cathode-anode plate, except internal temperature of battery is monitored, also can be carried out perception by the fiber-optic grating sensor of built-in type.While being embedded in temperature monitoring fiber-optic grating sensor, being also close on pole plate by another grating sensor, when pole plate deforms upon or during bulge, fiber grating will be extruded, and in like manner can carry out perception respective change by the drift of reflection wavelength.
Further, described light source submodule includes SLED wideband light source.Optical circulator submodule includes optical circulator 4.The selection of wideband light source is corresponding to the enforcement of wavelength-division multiplex technique；Optical circulator 4 is embedded in the optical fiber sensing system of lithium battery for correctly guiding broadband signal light to incide, and incident illumination cut-offs route choosing by Multichannel photoswitch 5, and timesharing enters each battery block pack, is time division multiplex；Enter into flashlight in pack via after the modulation to specific wavelength of the Fibre Optical Sensor in each battery unit cell reflecting, return optical circulator 4 port, and correctly guide in inlet signal acquisition process submodule 6, and be converted to the signal of telecommunication by it and process；Finally by software control, the drift of each Fibre Optical Sensor reflection wavelength is monitored, thus realizing the quick sensing to the inside battery state in work.The demodulation mode of signal is had good universality and compatibility by time-division, wavelength-division hybrid multiplex technology.
The present invention makes up the deficiency existed in lithium battery safety monitoring technology in existing electric automobile, optical fiber is embedded in each lithium cells cell as sensor, and carry out networking in conjunction with wavelength-division, time-division multiplex technology, thus realize the monitoring to lithium battery interior variations in temperature.Simultaneously, it is contemplated that the characteristic that fiber grating many reference amounts are sensitive, fiber grating can be carried out enhanced sensitivity process so that it is also the deformation of cathode-anode plate in lithium battery can be monitored.
Embodiment of above is merely to illustrate the present invention, but not limitation of the present invention.Although the present invention being described in detail with reference to embodiment, it will be understood by those within the art that, technical scheme is carried out various combination, amendment or equivalent replacement, without departure from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of scope of the presently claimed invention.
Claims (10)
1. a lithium battery safety monitoring system, it is characterised in that described system includes signal and controls module and lithium battery module；Described lithium battery module includes several battery units, and each described battery unit is all embedded with Fibre Optical Sensor；
Described signal controls module provides original optical signal to described lithium battery module, described original optical signal forms modulation optical signal after the described Fibre Optical Sensor modulation of corresponding battery unit, described modulation optical signal is reflected back described signal and controls module, described signal controls module and is demodulated the described modulation optical signal of its reception being formed and solves dim signal, and determines the data of the information to be monitored of correspondence according to the wave length shift degree of described solution dim signal.
2. system according to claim 1, it is characterised in that the outer surface of described Fibre Optical Sensor is provided with protective layer, and described Fibre Optical Sensor is embedded into the inside of battery of described battery unit.
3. system according to claim 2, it is characterised in that the battery of described battery unit is laminated lithium battery or coiling type lithium battery.
4. system according to claim 1, it is characterised in that described lithium battery module also includes several battery blocks, and each described battery block all includes several described battery units.
5. system according to claim 4, it is characterised in that described signal controls module and includes light source submodule, optical circulator submodule, photoswitch submodule and signal acquisition process submodule；
Described light source submodule produces described original optical signal, and described original optical signal is inputted in described optical circulator submodule, described original optical signal is sent into described photoswitch submodule by described optical circulator submodule, described original optical signal is sent in corresponding described battery block by described photoswitch submodule, described primary signal is modulated forming described modulation optical signal by described battery unit corresponding in described battery block, described signal acquisition process submodule is entered through described photoswitch submodule successively and optical circulator submodule after the described battery unit reflection that described modulation optical signals is corresponding, the described modulation optical signal of its reception is demodulated being formed and solves dim signal by described signal acquisition process submodule, and the data of the information to be monitored of correspondence are determined according to the wave length shift degree of described solution dim signal.
6. system according to claim 5, it is characterised in that described photoswitch submodule includes time division multiplex Multichannel photoswitch, the described original optical signal timesharing of its reception is sent in each described battery block by described time division multiplex Multichannel photoswitch.
7. system according to claim 4, it is characterized in that, each described battery block all includes at least one optical fiber, and is arranged at intervals with several Fibre Optical Sensors with different reflection wavelength on every described optical fiber, and each described Fibre Optical Sensor lays respectively in a described battery unit.
8. the system according to any one of claim 1 to 7, it is characterised in that described Fibre Optical Sensor is fiber-optic grating sensor, based on the full-fiber sensor of intermembranous interference or micro-nano sensor.
9. the system according to any one of claim 1 to 7, it is characterised in that described Fibre Optical Sensor is measure the Fibre Optical Sensor of temperature or measure the Fibre Optical Sensor of deformation.
10. the system according to any one of claim 5 to 7, it is characterised in that described light source submodule includes SLED light source.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410307A (en) * | 2016-10-13 | 2017-02-15 | 江汉大学 | Lithium battery safety real-time monitoring system |
| CN106768567A (en) * | 2017-03-20 | 2017-05-31 | 吉林大学 | The detection means and measuring method of lithium ion battery internal stress |
| CN107340478A (en) * | 2017-06-13 | 2017-11-10 | 江苏银基烯碳能源科技有限公司 | A kind of temperature and strain acquisition system |
| CN111102934A (en) * | 2019-12-25 | 2020-05-05 | 上海豫源电力科技有限公司 | Method for monitoring expansion and deformation of battery cell |
| CN111313046A (en) * | 2020-04-08 | 2020-06-19 | 上海豫源电力科技有限公司 | Soft package battery module and manufacturing method thereof |
| CN111463516A (en) * | 2020-04-14 | 2020-07-28 | 上海豫源电力科技有限公司 | Soft package battery module and manufacturing method thereof |
| CN111463510A (en) * | 2020-04-14 | 2020-07-28 | 上海豫源电力科技有限公司 | Soft package battery module and manufacturing method thereof |
| 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 |
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| CN115615343A (en) * | 2022-12-05 | 2023-01-17 | 中汽数据有限公司 | Power battery safety monitoring method, electronic equipment and storage medium |
| CN116026491A (en) * | 2023-03-28 | 2023-04-28 | 北京神州普惠科技股份有限公司 | Battery management system and battery management method based on distributed optical fibers |
| CN116466234A (en) * | 2023-04-23 | 2023-07-21 | 上海纤传科技有限公司 | Power battery internal state measurement method based on multi-parameter fiber bragg grating array |
| WO2023230842A1 (en) * | 2022-05-31 | 2023-12-07 | 华为技术有限公司 | Cell detection apparatus and method, battery pack, chassis assembly, and vehicle |
| CN118533209A (en) * | 2024-07-25 | 2024-08-23 | 比亚迪股份有限公司 | Optical fiber sensor, detection device, battery system and detection system |
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| 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 |
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| CN115615343A (en) * | 2022-12-05 | 2023-01-17 | 中汽数据有限公司 | Power battery safety monitoring method, electronic equipment and storage medium |
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