CN109950641A - A kind of internal temperature of lithium ion battery measuring system and method - Google Patents
A kind of internal temperature of lithium ion battery measuring system and method Download PDFInfo
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- CN109950641A CN109950641A CN201711388998.7A CN201711388998A CN109950641A CN 109950641 A CN109950641 A CN 109950641A CN 201711388998 A CN201711388998 A CN 201711388998A CN 109950641 A CN109950641 A CN 109950641A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A kind of internal temperature of lithium ion battery measuring system and method, comprising: fiber-optic grating sensor, fiber Bragg grating (FBG) demodulator and data processing module；The fiber Bragg grating (FBG) demodulator is connect with the data processing module；The fiber-optic grating sensor includes grating and optical fiber；The grating is pasted onto inside lithium ion cell；The optical fiber outside lithium ion battery is connect with the fiber Bragg grating (FBG) demodulator.Technical solution provided by the invention realizes the accurate measurement to internal temperature of lithium ion battery, overcomes the shortcomings that traditional measurement method cannot accurately measure internal temperature of lithium ion battery.
Description
Technical field
The present invention relates to temperature measurement systems, and in particular to a kind of internal temperature of lithium ion battery measuring system and method.
Background technique
With extensive use of the lithium ion battery in electronic product and electric car, in lithium ion battery use process
Safety problem increasingly obtains everybody concern, and temperature is one very heavy in the physical quantity for influencing lithium ion battery security
The influence factor wanted.Temperature all has an impact to the performance of lithium ion battery various aspects, and working condition including electro-chemical systems is followed
Ring efficiency, capacity, power, safety, reliability, consistency and service life etc..Therefore seem to the measurement of lithium ion battery temperature
It is very important.
The common thermometry of present battery includes thermocouple and infrared imaging, although two kinds of technologies are in battery thermometric
In have good development, but all have the defects that certain.Thermocouple needs to be easy to produce short circuit risk using metal wire,
And the metal material used is often stone, brings many inconvenience to installing and using；Infrared imagery technique uses object
The infrared signal of body transmitting measures, and is easy by interference in air flow, and precision is inadequate, and using when also need for different quilts
It surveys object emission rate to correct, it is many and diverse that follow-up data handles work.And due to the corrosive environment that inside lithium ion cell is strong,
Two kinds of traditional temp measuring methods can only measure the temperature of lithium ion battery surface, cannot accurately measure lithium-ion electric
Temperature inside pond.
Therefore, to overcome drawbacks described above, the present invention provides a kind of internal temperature of lithium ion battery measuring system and methods.
Summary of the invention
In order to solve the above-mentioned deficiency in the presence of the prior art, the present invention provides a kind of internal temperature of lithium ion battery survey
Measure system and method.
Present invention provide the technical scheme that a kind of internal temperature of lithium ion battery measuring system, comprising: fiber grating passes
Sensor, fiber Bragg grating (FBG) demodulator and data processing module；
The fiber Bragg grating (FBG) demodulator is connect with the data processing module；
The fiber-optic grating sensor includes grating and optical fiber；
The grating is pasted onto inside lithium ion cell；
The optical fiber outside lithium ion battery is connect with the fiber Bragg grating (FBG) demodulator.
Preferably, the temperature sensing that the fiber-optic grating sensor is encapsulated using the glass capillary based on fiber grating
Device；
The temperature sensor includes: optical fiber, grating and glass tube matrix；
One end of the optical fiber and the grating are encapsulated in the glass tube matrix.
Preferably, the optical fiber includes fibre core, covering and coat；
Preferably, it is closed end that the glass tube matrix, which includes: one end, and the other end is sealed end.
Preferably, the glass tube matrix is using neutral horminess glass tube；
The length of the glass tube matrix is less than the distance between anode ear and negative electrode lug of lithium ion battery.
Preferably, the sealed end is used is sealed using 353ND glue.
Preferably, the grating bonding partially of the fiber-optic grating sensor is in inside lithium ion cell, comprising:
The grating bonding partially of the fiber-optic grating sensor uses high-temp glue on the solder joint of the lithium ion battery
Band fixes the both ends in the fiber grating area.
Preferably, the fiber section of the fiber-optic grating sensor and the anode ear of lithium ion battery are contrary.
Preferably, the high temperature gummed tape includes: the adhesive tape being made of Kapton.
Preferably, the fiber Bragg grating (FBG) demodulator by Ethernet and using Labview software realization data conversion and
The computer of display connects.
A kind of internal temperature of lithium ion battery measurement method, which comprises
Fiber-optic grating sensor obtains internal temperature of battery by the grating pasted with inside lithium ion cell, and passes through position
The central wavelength of fiber bragg grating is transmitted to fiber Bragg grating (FBG) demodulator by the optical fiber outside lithium ion battery；
The fiber bragg grating sensor passes through fiber Bragg grating (FBG) demodulator for the middle cardiac wave of the fiber bragg grating after demodulation
Length is transferred to data processing module；
The data processing module handles the central wavelength of the fiber bragg grating after demodulation, obtains lithium ion
Internal temperature of battery.
Preferably, the fiber-optic grating sensor obtains inside battery temperature by the grating pasted with inside lithium ion cell
Degree, and the central wavelength of fiber bragg grating is transmitted to grating demodulation instrument packet by being located at the optical fiber outside lithium ion battery
It includes:
The grating of the fiber-optic grating sensor is pasted on the solder joint of lithium ion battery, and the fiber-optic grating sensor is logical
The temperature acquisition internal temperature of battery that solder joint described in grating measuring is inscribed on fiber core is crossed, and by being located at lithium ion battery
The central wavelength for the fiber bragg grating being reflected back is transmitted to grating demodulation instrument by external optical fiber.
Compared with prior art, the invention has the benefit that
Technical solution provided by the invention carries out temperature survey by the way that fiber-optic grating sensor is put into inside lithium ion cell
Amount realizes the accuracy to the measurement of lithium ion battery temperature；
Using the temperature sensor of the glass capillary encapsulation based on FBG, one end is fiber-optic grating sensor of the invention
Closed end, the other end are sealed using glue, and not only tool has good corrosion resistance, and not will receive inside lithium ion cell
The influence of stress, can steady operation in strong corrosive environment；
Technical solution provided by the invention, by lithium ion battery outwardly and inwardly sensor parallel position paste heat
Galvanic couple PT100 platinum resistance and temperature monitor are realized to the accurate of internal temperature of lithium ion battery measuring system measurement temperature
Property is verified；
Fiber-optic grating sensor provided by the invention have electromagnetism interference and do not generate electromagnetic interference, it is corrosion-resistant, not by
The advantages of extraneous stress influences, and it is small in size, it is easy for installation.
Detailed description of the invention
Fig. 1 is fiber-optic grating sensor structural schematic diagram of the invention；
Fig. 2 is fiber-optic grating sensor temperature calibration curve graph of the invention；
Fig. 3 is the schematic diagram that fiber-optic grating sensor of the invention is pasted onto inside lithium ion cell；
Fig. 4 is internal temperature of lithium ion battery measuring system schematic diagram of the invention；
Wherein, 1 grating region, 2 fiber cores, 3 optical fiber coatings, 4 neutral hard sealing glass tubes, 5 openings, 6 optical fiber, 7
Positive plate, 8 diaphragms, 9 solder joints, 10 fiber grating areas, 11 high temperature gummed tapes, 12 anode ears, 13 battery charging and discharging equipment, 14 are pasted
The lithium ion battery of sensor, 15 fiber-optic grating sensors, 16 optical fiber splitters, 17 fiber Bragg grating (FBG) demodulators, 18 monitoring temperatures
Module, 19 routers, 20 data processing modules, 21 thermocouple PT100 platinum resistance.
Specific embodiment
For a better understanding of the present invention, the contents of the present invention are done further with example with reference to the accompanying drawings of the specification
Explanation.
A kind of internal temperature of lithium ion battery measuring system provided by the invention, comprising: fiber-optic grating sensor, optical fiber light
Grid (FBG) demodulator and data processing module；
Fiber Bragg grating (FBG) demodulator is connect with the data processing module；Fiber-optic grating sensor includes grating and optical fiber；
Grating is pasted onto inside lithium ion cell；
Optical fiber outside lithium ion battery is connect with fiber Bragg grating (FBG) demodulator.
Fiber-optic grating sensor specific structure is as shown in Figure 1, comprising: 1 grating region, 2 fiber cores, 3 optical fiber coatings, 4
Neutral hard seals glass tube.
1 grating region, one end of 2 fiber cores and 3 optical fiber coatings are respectively positioned in 4 neutral hard sealing glass tubes.?
3 optical fiber coating parts are easy to be broken down by electrolytic corrosion and only 1 grating region, 2 fiber cores, 3 optical fiber coatings in test
The fiber-optic grating sensor that layer is constituted is highly susceptible to the influence of internal stress after battery vacuum-pumping in an experiment and leads to thermometric
Inaccuracy.Therefore, in order to make 3 optical fiber coatings not be corroded and eliminate the influence of inside battery stress, in production Fibre Optical Sensor
1 grating region in figure one, 2 fiber cores, 3 optical fiber coatings are partially encapsulated in 4 neutral hard sealing glass of figure one when device
Guan Zhong.
Prevent electrolyte from penetrating into sensor internal corrosion sensor in 4 neutral hard sealing 5 openings of glass tube, in 4
Property hard sealing glass tube 5 open ends at directly with 353ND glue by neutral hard sealing glass tube shut.
According to optical fiber grating temperature-measuring principle, the fiber-optic grating sensor made is put into constant water bath box and is demarcated
Obtain calibration curve as shown in Figure 2.As seen in Figure 1, the fiber-optic grating sensor of glass tube encapsulation has passes well
Feel characteristic.
Fiber-optic grating sensor includes grating and optical fiber；Grating is pasted onto inside lithium ion cell；Positioned at lithium ion battery
External optical fiber is connect with fiber Bragg grating (FBG) demodulator.Fiber-optic grating sensor as shown in Figure 3 is pasted onto inside lithium ion cell
Schematic diagram.
Wherein, 7 positive plates, 8 diaphragms, the chief component that 12 anode ears are lithium ion battery, 6 optical fiber, 9 solder joints, 10
Fiber grating area, 11 high temperature gummed tapes.
Lithium ion battery can be caused 9 solder joints in production encapsulation process on pole piece by High-temperature Packaging equipment, and 9 solder joints are electricity
The part most easily to generate heat inside pond.Therefore, the acquisition of temperature has practical significance at 9 solder joints.Mark in cell fabrication processes
10 fiber grating area bonding partiallies of the sensor crossed surely are on 9 solder joints of lithium ion battery.
Fiber-optic grating sensor is mobile in inside battery in order to prevent, with by high-temperature insulation material Kapton structure
At 11 high temperature gummed tapes be fixed at the both ends in 10 fiber grating areas.
In order to keep cell package convenient, 6 fiber section directions and the battery of sensor are made when pasting fiber-optic grating sensor
12 anode ears pair, lithium ion battery is mainly by 7 positive plates, negative electrode tab, 8 diaphragms, electrolyte, 12 anode ears and negative electrode lug structure
At inside lithium ion cell is stacking cross arrangement, is separated between each positive plate and negative electrode tab by diaphragm, one shares 10 layers
The positive plate and 10 layers or so of negative electrode tab, tab of left and right are the connecting terminals that battery is drawn outward, in the middle layer portion of battery
Point, one on positive plate, one in negative electrode tab, 12 is contrary.
Stacked lithium ion battery is intermediate symmetry structure, therefore in lithium ion battery plus-negative plate during cell package
A fiber-optic grating sensor is respectively pasted on the solder joint of ear.
The invention also includes a kind of internal temperature of lithium ion battery measurement methods, which comprises
Fiber-optic grating sensor obtains internal temperature of battery by the grating pasted with inside lithium ion cell, and passes through position
The central wavelength of fiber bragg grating is transmitted to fiber Bragg grating (FBG) demodulator by the optical fiber outside lithium ion battery, specifically such as
Under:
The grating of the fiber-optic grating sensor is pasted on the solder joint of lithium ion battery, and the fiber-optic grating sensor is logical
The temperature acquisition internal temperature of battery that solder joint described in grating measuring is inscribed on fiber core is crossed, and by being located at lithium ion battery
The central wavelength for the fiber bragg grating being reflected back is transmitted to grating demodulation instrument by external optical fiber.
The fiber bragg grating sensor passes through fiber Bragg grating (FBG) demodulator for the middle cardiac wave of the fiber bragg grating after demodulation
Length is transferred to data processing module, specifically includes:
Built-in wideband light source, light are issued by wideband light source inside 17 fiber Bragg grating (FBG) demodulators, are entered by coupler
15 fiber-optic grating sensors, light a part of 15 fiber-optic grating sensors of arrival transmissive in the form of transmitted light, a part
The light that wavelength meets Bragg condition can be reflected by fiber grating, and the wavelength for the light wave being reflected back is known as optical fiber Bradley
The central wavelength of lattice grating.The variation of central wavelength is related with refractive index and screen periods, and ambient temperature and stress can be led
The change of induced refractive index and screen periods, by the way that fiber grating sensor wavelength and temperature are good at normal temperature known to document
Linear relationship, therefore ambient temperature can be obtained to realize the survey of temperature by carrying out demodulation to reflected central wavelength
Amount, by coupler, wavelength detecting part inside 17 fiber Bragg grating (FBG) demodulators can calculate the center of fiber bragg grating
Wavelength
The data processing module handles the central wavelength of the fiber bragg grating after demodulation, obtains lithium ion
Internal temperature of battery.
For a kind of measuring system of internal temperature of lithium ion battery measurement method inside lithium ion cell as shown in Figure 4
Temperature measurement system schematic diagram.
Wherein, 14 have pasted the lithium ion battery of sensor, 17 fiber Bragg grating (FBG) demodulators, 15 fiber-optic grating sensors.
In order to which whether the temperature of fiber-optic grating sensor acquisition in confirmatory experiment is correct, 14 paste outside lithium ion battery
The corresponding position of the lithium ion battery of sensor pastes 21 thermocouple PT100 platinum resistance.21 thermocouple PT100 platinum resistance are exactly
For whether correctly to verify fiber-optic grating sensor measurement.Corresponding position just refers to outside battery and internal sensor is flat
Capable position.18 temperature monitoring modules are that 21 thermocouple PT100 platinum resistance of outside batteries is cooperated to monitor the monitoring temperature used
Device acquires and shows the temperature data of 21 thermocouple PT100 platinum resistance.
The temperature that the temperature that fiber-optic grating sensor acquires is acquired with 18 temperature monitoring modules is compared, optical fiber is verified
Whether the temperature of grating sensor acquisition is correct
Each module of whole system is connected as shown in Figure 4, the parameter of 13 battery charging and discharging equipment is set, has pasted biography to 14
The lithium ion battery of sensor carries out cycle charge discharge electric test.
Wideband light source in experiment in 17 fiber Bragg grating (FBG) demodulators issues 16 optical fiber splitters transmission arrival 15 and is pasted onto electricity
Fibre optical sensor inside pond, the light for meeting the bragg wavelength for the fibre optical sensor that 15 are pasted onto inside battery will be again through 16 light
Fine splitter is returned and is demodulated and is shown in 17 fiber Bragg grating (FBG) demodulators.
17 fiber Bragg grating (FBG) demodulators and 18 temperature monitoring modules pass through cable respectively and pass through 19 routers for collected number
According to being transferred to 20 data processing modules.20 data processing modules are handled by Labview program turns collected wavelength data
It is changed to temperature, while the collected temperature data of 18 temperature monitoring module of real-time display, and makes relevant temperature-time graph.
20 data processing modules save collected wavelength, temperature number by Labview process control Origin software
According to so as to subsequent processing.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (12)
1. a kind of internal temperature of lithium ion battery measuring system characterized by comprising fiber-optic grating sensor, fiber grating
(FBG) demodulator and data processing module；
The fiber Bragg grating (FBG) demodulator is connect with the data processing module；
The fiber-optic grating sensor includes grating and optical fiber；
The grating is pasted onto inside lithium ion cell；
The optical fiber outside lithium ion battery is connect with the fiber Bragg grating (FBG) demodulator.
2. internal temperature of lithium ion battery measuring system as described in claim 1, which is characterized in that the optical fiber grating sensing
The temperature sensor that device is encapsulated using the glass capillary based on fiber grating；
The temperature sensor includes: optical fiber, grating and glass tube matrix；
One end of the optical fiber and the grating are encapsulated in the glass tube matrix.
3. internal temperature of lithium ion battery measuring system as claimed in claim 2, which is characterized in that the optical fiber includes fibre
Core, covering and coat.
4. internal temperature of lithium ion battery measuring system as claimed in claim 2, which is characterized in that the glass tube matrix packet
Include: one end is closed end, and the other end is sealed end.
5. internal temperature of lithium ion battery measuring system as claimed in claim 4, which is characterized in that the glass tube matrix is adopted
With neutral horminess glass tube；
The length of the glass tube matrix is less than the distance between anode ear and negative electrode lug of lithium ion battery.
6. internal temperature of lithium ion battery measuring system as claimed in claim 4, which is characterized in that the sealed end is adopted
It is sealed with 353ND glue.
7. internal temperature of lithium ion battery measuring system as described in claim 1, which is characterized in that the optical fiber grating sensing
The grating bonding partially of device is in inside lithium ion cell, comprising:
The grating bonding partially of the fiber-optic grating sensor uses high temperature gummed tape will on the solder joint of the lithium ion battery
The both ends in the fiber grating area are fixed.
8. internal temperature of lithium ion battery measuring system as claimed in claim 7, which is characterized in that the optical fiber grating sensing
The fiber section of device and the anode ear of lithium ion battery are contrary.
9. internal temperature of lithium ion battery measuring system as claimed in claim 7, which is characterized in that the high temperature gummed tape packet
It includes: the adhesive tape being made of Kapton.
10. internal temperature of lithium ion battery measuring system as described in claim 1, which is characterized in that the fiber grating solution
Instrument is adjusted to connect by Ethernet with the computer of conversion and display using Labview software realization data.
11. a kind of internal temperature of lithium ion battery measurement method, which is characterized in that the described method includes:
Fiber-optic grating sensor obtains internal temperature of battery by the grating pasted with inside lithium ion cell, and by being located at lithium
The central wavelength of fiber bragg grating is transmitted to fiber Bragg grating (FBG) demodulator by the optical fiber outside ion battery；
The fiber bragg grating sensor is passed the central wavelength of the fiber bragg grating after demodulation by fiber Bragg grating (FBG) demodulator
It is defeated to arrive data processing module；
The data processing module handles the central wavelength of the fiber bragg grating after demodulation, obtains lithium ion battery
Internal temperature.
12. method as claimed in claim 11, which is characterized in that the fiber-optic grating sensor by in lithium ion battery
The grating that portion is pasted obtains internal temperature of battery, and by being located at the optical fiber outside lithium ion battery for fiber bragg grating
Central wavelength is transmitted to grating demodulation instrument
The grating of the fiber-optic grating sensor is pasted on the solder joint of lithium ion battery, the fiber-optic grating sensor by
The temperature that solder joint described in grating measuring is inscribed on fiber core obtains internal temperature of battery, and by being located at outside lithium ion battery
Optical fiber the central wavelength for the fiber bragg grating being reflected back is transmitted to grating demodulation instrument.
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| CN201711388998.7A CN109950641A (en) | 2017-12-20 | 2017-12-20 | A kind of internal temperature of lithium ion battery measuring system and method |
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| CN201711388998.7A CN109950641A (en) | 2017-12-20 | 2017-12-20 | A kind of internal temperature of lithium ion battery measuring system and method |
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Cited By (8)
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| CN110838604A (en) * | 2019-11-21 | 2020-02-25 | 北京理工大学 | Power battery based on fiber Bragg grating and monitoring system and method thereof |
| CN111224038A (en) * | 2020-03-24 | 2020-06-02 | 上海豫源电力科技有限公司 | Battery module and assembling method thereof |
| CN113064079A (en) * | 2021-03-05 | 2021-07-02 | 万向一二三股份公司 | Device and method for testing overcharge performance of lithium ion power battery pack |
| CN113176513A (en) * | 2021-04-23 | 2021-07-27 | 深圳吉阳智能科技有限公司 | State monitoring unit, state monitoring method and battery |
| CN113346199A (en) * | 2021-04-13 | 2021-09-03 | 华中科技大学 | Integrated optical fiber tab, preparation method and application |
| CN113465773A (en) * | 2021-07-28 | 2021-10-01 | 傲普(上海)新能源有限公司 | Method for measuring and calculating internal temperature of lithium ion battery |
| WO2021198720A1 (en) * | 2020-04-03 | 2021-10-07 | Faurecia Systems D'echappement | Method for qualifying battery quality by means of heat flow rate sensing during first charge |
| CN114421037A (en) * | 2022-01-21 | 2022-04-29 | 深圳太辰光通信股份有限公司 | Device and method for measuring internal temperature and strain of battery and battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838604A (en) * | 2019-11-21 | 2020-02-25 | 北京理工大学 | Power battery based on fiber Bragg grating and monitoring system and method thereof |
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| CN111224038A (en) * | 2020-03-24 | 2020-06-02 | 上海豫源电力科技有限公司 | Battery module and assembling method thereof |
| WO2021198720A1 (en) * | 2020-04-03 | 2021-10-07 | Faurecia Systems D'echappement | Method for qualifying battery quality by means of heat flow rate sensing during first charge |
| CN113064079A (en) * | 2021-03-05 | 2021-07-02 | 万向一二三股份公司 | Device and method for testing overcharge performance of lithium ion power battery pack |
| CN113346199A (en) * | 2021-04-13 | 2021-09-03 | 华中科技大学 | Integrated optical fiber tab, preparation method and application |
| CN113346199B (en) * | 2021-04-13 | 2022-10-04 | 华中科技大学 | Integrated optical fiber tab, preparation method and application |
| CN113176513A (en) * | 2021-04-23 | 2021-07-27 | 深圳吉阳智能科技有限公司 | State monitoring unit, state monitoring method and battery |
| CN113465773A (en) * | 2021-07-28 | 2021-10-01 | 傲普(上海)新能源有限公司 | Method for measuring and calculating internal temperature of lithium ion battery |
| CN114421037A (en) * | 2022-01-21 | 2022-04-29 | 深圳太辰光通信股份有限公司 | Device and method for measuring internal temperature and strain of battery and battery |
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Application publication date: 20190628 |