CN107623127A - A kind of lithium battery - Google Patents
A kind of lithium battery Download PDFInfo
- Publication number
- CN107623127A CN107623127A CN201710791074.5A CN201710791074A CN107623127A CN 107623127 A CN107623127 A CN 107623127A CN 201710791074 A CN201710791074 A CN 201710791074A CN 107623127 A CN107623127 A CN 107623127A
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- CN
- China
- Prior art keywords
- battery
- coating layer
- recessed area
- fiber
- lithium battery
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- 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.)
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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
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, and pole piece includes collector, coating layer, and coating layer is coated with a current collector, it is characterized in that it is provided with recessed area on the coating layer, fiber-optical grating temperature sensor is provided with recessed area, recessed area is elongated groove, and the grating sensing area is distributed in close to lug end regions.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, is provided with fiber-optical grating temperature sensor in recessed area, recessed area is elongated groove, institute
Grating sensing area is stated to be distributed in close to lug end regions.Fiber grating is vulnerable to the influence of extraneous refractive index, sensitivity it is higher and
Its size is small, it is widely used in temperature detection the features such as corrosion-resistant, anti-electromagnetic-radiation, strong antijamming capability, especially exists
Application more advantage in short space.Further, fiber-optical grating temperature sensor is arranged in pole piece, can be first
The temperature change of time supervision inside battery；When battery temperature is too high or in low-temperature condition, passed by optical fiber grating temperature
The monitoring of sensor can rapidly make corresponding regulation and control to battery in time.
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, recessed area is elongated groove, and the grating sensing area is distributed in close to lug end regions.Such as figure
Shown in 1, the pole piece inside lithium battery includes collector 1, coating layer 2, and coating layer 2 is coated on collector 1, the coating layer 2
On be provided with recessed area 3, be provided with fiber-optical grating temperature sensor in recessed area, recessed area is elongated groove, the grating sensing area
It is distributed in close to lug end regions.
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
Fiber-optical grating temperature sensor, recessed area are elongated groove, and the grating sensing area is distributed in close to lug end regions.
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 |
|---|---|---|---|
| CN201710791074.5A CN107623127A (en) | 2017-09-05 | 2017-09-05 | A kind of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791074.5A CN107623127A (en) | 2017-09-05 | 2017-09-05 | A kind of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107623127A true CN107623127A (en) | 2018-01-23 |
Family
ID=61089131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791074.5A Withdrawn CN107623127A (en) | 2017-09-05 | 2017-09-05 | A kind of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107623127A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429326A (en) * | 2019-06-21 | 2019-11-08 | 宣城市泰宇电池有限公司 | A kind of self protection type's lithium battery and its guard method |
| CN111987285A (en) * | 2020-09-14 | 2020-11-24 | 珠海冠宇电池股份有限公司 | Positive plate and lithium ion battery comprising same |
| CN112331945A (en) * | 2020-11-05 | 2021-02-05 | 北京国电光宇机电设备有限公司 | Lithium battery and lithium battery pack with temperature measuring device |
| CN113097590A (en) * | 2021-04-01 | 2021-07-09 | 电子科技大学 | Lithium battery current collector with temperature sensing function and preparation 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 |
| CN114613932A (en) * | 2022-03-24 | 2022-06-10 | 深圳吉阳智能科技有限公司 | Pole piece structure and battery |
| CN116845406A (en) * | 2023-08-28 | 2023-10-03 | 宁德时代新能源科技股份有限公司 | Battery and electricity utilization device |
| CN114613932B (en) * | 2022-03-24 | 2024-04-19 | 深圳吉阳智能科技有限公司 | Pole piece structure and battery |
-
2017
- 2017-09-05 CN CN201710791074.5A patent/CN107623127A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429326A (en) * | 2019-06-21 | 2019-11-08 | 宣城市泰宇电池有限公司 | A kind of self protection type's lithium battery and its guard method |
| CN111987285A (en) * | 2020-09-14 | 2020-11-24 | 珠海冠宇电池股份有限公司 | Positive plate and lithium ion battery comprising same |
| CN112331945A (en) * | 2020-11-05 | 2021-02-05 | 北京国电光宇机电设备有限公司 | Lithium battery and lithium battery pack with temperature measuring device |
| CN112331945B (en) * | 2020-11-05 | 2021-12-07 | 北京国电光宇机电设备有限公司 | Lithium battery and lithium battery pack with temperature measuring device |
| 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 |
| CN113108955B (en) * | 2021-03-31 | 2023-04-28 | 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 |
| CN113097590A (en) * | 2021-04-01 | 2021-07-09 | 电子科技大学 | Lithium battery current collector with temperature sensing function and preparation method thereof |
| CN114613932A (en) * | 2022-03-24 | 2022-06-10 | 深圳吉阳智能科技有限公司 | Pole piece structure and battery |
| CN114613932B (en) * | 2022-03-24 | 2024-04-19 | 深圳吉阳智能科技有限公司 | Pole piece structure and battery |
| CN116845406A (en) * | 2023-08-28 | 2023-10-03 | 宁德时代新能源科技股份有限公司 | Battery and electricity utilization device |
| CN116845406B (en) * | 2023-08-28 | 2024-03-01 | 宁德时代新能源科技股份有限公司 | Battery and electricity utilization device |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180123 |
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| WW01 | Invention patent application withdrawn after publication |