CN107394210A - A kind of lithium battery - Google Patents
A kind of lithium battery Download PDFInfo
- Publication number
- CN107394210A CN107394210A CN201710791072.6A CN201710791072A CN107394210A CN 107394210 A CN107394210 A CN 107394210A CN 201710791072 A CN201710791072 A CN 201710791072A CN 107394210 A CN107394210 A CN 107394210A
- Authority
- CN
- China
- Prior art keywords
- battery
- coating layer
- recessed area
- pole piece
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
A kind of lithium battery, including battery core and shell, battery core is arranged in shell, battery core is made up of pole piece, pole piece includes collector, coating layer, and coating layer is coated with a current collector, it is characterised in that is provided with recessed area on the coating layer, fiber-optical grating temperature sensor is provided with recessed area, centre is leaned in the recessed area in pole piece.The temperature inside battery core can be monitored in real time, reflects the operating temperature situation of battery in time, and the security that lifting battery uses simultaneously makes the counter-measure of battery thermal runaway event in time.
Description
(1) technical field
The present invention relates to a kind of lithium battery, more particularly to a kind of lithium battery of built-in fiber bragg grating temperature sensor.
(2) background technology
Lithium battery have the advantages that voltage it is high, it is higher than energy, recycle often, storage time it is long, not only portable
(such as mobile phone, DV and laptop computer) is used widely on formula electronic equipment, and is widely used in electricity
In terms of the big-and-middle-sized electrical equipment such as electrical automobile, electric bicycle and electric tool, therefore to the performance requirement of lithium ion battery
More and more higher.The internal structure of lithium battery is made up of positive and negative electrode piece and barrier film, and battery can produce largely in use
Heat, influence the cycle life and safety of its battery, especially high capacity cell had a great influence, monitors lithium battery in real time
Internal temperature situation of change most directly effectively can judge battery health.All it is by the lug in battery core in the prior art
Temperature sensor is set to monitor the situation of change of battery temperature between place or lug and battery core, between battery core and shell, so
And the temperature change truth of this and the pyrotoxin of battery core can have some hysteresis.
Therefore, it has been urgent need to study a kind of lithium battery of new built-in temperature sensor.
(3) content of the invention
The present invention provides a kind of inside battery lithium ion temperature monitoring that can realize for above-mentioned the deficiencies in the prior art
Lithium battery.
The present invention is that technical scheme is used by solving the above problems：A kind of lithium battery, including battery core and shell, battery core
It is arranged in shell, battery core is made up of pole piece, and pole piece includes collector, coating layer, and coating layer is coated with a current collector, its feature
It is to be provided with recessed area on the coating layer, fiber-optical grating temperature sensor is provided with recessed area, the recessed area is in pole piece leans on
Center portion position.Fiber grating is vulnerable to the influence of extraneous refractive index, and sensitivity is higher and its size is small, corrosion-resistant, anti-electromagnetism spoke
Penetrate, strong antijamming capability the features such as it is widely used in temperature detection, the application more advantage especially in short space.Enter
One step, fiber-optical grating temperature sensor is arranged in pole piece, the temperature change of inside battery can be monitored in the very first time；
, can be in time rapidly to battery by the monitoring of fiber-optical grating temperature sensor when battery temperature is too high or in low-temperature condition
Make corresponding regulation and control.
Further, it is of the invention to be further characterized in that the fiber-optical grating temperature sensor set in recessed area is bare fibre light
Grid.
Further, it is of the invention to be further characterized in that the fiber-optical grating temperature sensor includes fibre core, covering, coat
And the grating on fibre core.
Further, the material of the invention for being further characterized in that pole coating layer is LiFePO4, cobalt acid lithium or ternary material
Material.
Further, be further characterized in that fiber-optical grating temperature sensor a diameter of 9~280 μm of the invention.
In addition, the present invention also has the following advantages that and beneficial effect：
1. the temperature inside battery core can be monitored in real time, reflect the operating temperature situation of battery in time, lifting battery uses
Security and the counter-measure for making battery thermal runaway event in time.
2. realizing the safety management to lithium battery group, battery life is increased.Provide Security Strategies and equilibrium
Management, battery is kept preferable uniformity, the life-span of battery can be effectively improved.
(4) illustrate
Fig. 1 is the schematic diagram of pole piece in the present invention.
Fig. 2, Fig. 3 are the structural representations of fiber-optical grating temperature sensor 4 in the present invention.
In figure, 1 it is collector, 2 is coating layer, 3 is recessed area, 4 is fiber-optical grating temperature sensor, 5 is fibre core, 6 is bag
Layer, 7 be coat, 8 be grating, 9 be bare optical fibers and bare optical gratings.
(5) embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of lithium battery, including battery core and shell, battery core are arranged in shell, and battery core is made up of pole piece, and pole piece includes collection
Fluid, coating layer, coating layer are coated with a current collector, it is characterised in that recessed area is provided with the coating layer, is set in recessed area
There is fiber-optical grating temperature sensor, centre is leaned in the recessed area in pole piece.As shown in figure 1, the pole piece inside lithium battery includes
Collector 1, coating layer 2, coating layer 2 are coated on collector 1, and recessed area 3 is provided with the coating layer 2, is provided with recessed area
Centre is leaned in fiber-optical grating temperature sensor, the recessed area in pole piece.
As shown in Figure 2,3, the fiber-optical grating temperature sensor 4 is included on fibre core 5, covering 6, coat 7 and fibre core
Grating 8, bare optical fibers and bare optical gratings 9 are made up of the fibre core 5 and covering 6 that eliminate coat 7.
Claims (5)
1. a kind of lithium battery, including battery core and shell, battery core are arranged in shell, battery core is made up of pole piece, and pole piece includes afflux
Body, coating layer, coating layer are coated with a current collector, it is characterised in that recessed area is provided with the coating layer, is provided with recessed area
Centre is leaned in fiber-optical grating temperature sensor, the recessed area in pole piece.
2. according to claim 1 lithium battery, it is characterised in that the fiber-optical grating temperature sensor set in recessed area is bare fibre light
Grid.
3. according to claim 1 lithium battery, it is characterised in that the fiber-optical grating temperature sensor includes fibre core, covering, coating
Grating on layer and fibre core.
4. the lithium battery according to any claim in claims 1 to 3, it is characterised in that the material of pole coating layer is
LiFePO4, cobalt acid lithium or ternary material.
5. the lithium battery according to any claim in claims 1 to 3, it is characterised in that fiber-optical grating temperature sensor
A diameter of 9~280 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791072.6A CN107394210A (en) | 2017-09-05 | 2017-09-05 | A kind of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791072.6A CN107394210A (en) | 2017-09-05 | 2017-09-05 | A kind of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107394210A true CN107394210A (en) | 2017-11-24 |
Family
ID=60349140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791072.6A Withdrawn CN107394210A (en) | 2017-09-05 | 2017-09-05 | A kind of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107394210A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065961A (en) * | 2018-08-09 | 2018-12-21 | 北京理工大学 | A kind of production method that multipoint mode internal temperature monitors integrated electrochemical cell |
| 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 |
| CN113346199A (en) * | 2021-04-13 | 2021-09-03 | 华中科技大学 | Integrated optical fiber tab, preparation method and application |
| CN114597337A (en) * | 2022-03-24 | 2022-06-07 | 深圳吉阳智能科技有限公司 | Battery pole piece and power battery |
| CN117525641A (en) * | 2023-11-06 | 2024-02-06 | 贵州梅岭电源有限公司 | Manufacturing method of high-energy lithium battery with failure early warning function and early warning system of high-energy lithium battery |
-
2017
- 2017-09-05 CN CN201710791072.6A patent/CN107394210A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065961A (en) * | 2018-08-09 | 2018-12-21 | 北京理工大学 | A kind of production method that multipoint mode internal temperature monitors integrated electrochemical cell |
| CN109065961B (en) * | 2018-08-09 | 2020-07-24 | 北京理工大学 | Manufacturing method of multi-point internal temperature monitoring integrated battery |
| 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 |
| CN113346199A (en) * | 2021-04-13 | 2021-09-03 | 华中科技大学 | Integrated optical fiber tab, preparation method and application |
| CN114597337A (en) * | 2022-03-24 | 2022-06-07 | 深圳吉阳智能科技有限公司 | Battery pole piece and power battery |
| CN117525641A (en) * | 2023-11-06 | 2024-02-06 | 贵州梅岭电源有限公司 | Manufacturing method of high-energy lithium battery with failure early warning function and early warning system of high-energy lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171124 |