CN107394211A - 一种锂电池 - Google Patents

一种锂电池 Download PDF

Info

Publication number
CN107394211A
CN107394211A CN201710794007.9A CN201710794007A CN107394211A CN 107394211 A CN107394211 A CN 107394211A CN 201710794007 A CN201710794007 A CN 201710794007A CN 107394211 A CN107394211 A CN 107394211A
Authority
CN
China
Prior art keywords
battery
coating layer
fiber
temperature sensor
recessed area
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Withdrawn
Application number
CN201710794007.9A
Other languages
English (en)
Inventor
唐忠相
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningxiang Kai Tree Financial Advisory Co Ltd
Original Assignee
Ningxiang Kai Tree Financial Advisory Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningxiang Kai Tree Financial Advisory Co Ltd filed Critical Ningxiang Kai Tree Financial Advisory Co Ltd
Priority to CN201710794007.9A priority Critical patent/CN107394211A/zh
Publication of CN107394211A publication Critical patent/CN107394211A/zh
Withdrawn legal-status Critical Current

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

Landscapes

  • 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

一种锂电池，包括电芯和外壳，电芯设置在外壳内，电芯由极片组成，极片包括集流体、涂布层，涂布层涂布在集流体上，其特征在于所述涂布层上设置有凹区，凹区中设置有光纤光栅温度传感器，所述凹区的大小与光纤光栅温度传感器大小相匹配。能实时监测电芯内部的温度，及时反映电池的工作温度情况，提升电池使用的安全性并及时作出电池热失控事件的应对措施。

Description

一种锂电池
(一)技术领域
本发明涉及一种锂电池，特别涉及一种内置光纤光栅温度传感器的锂电池。
(二)背景技术
锂电池具有电压高、比能量高、循环使用次数多、存储时间长等优点，不仅在便携式电子设备上(如移动电话、数码摄像机和手提电脑)得到广泛应用，而且也广泛应用于电动汽车、电动自行车以及电动工具等大中型电动设备方面，因此对锂离子电池的性能要求越来越高。锂电池的内部结构是由正负电极片和隔膜组成，电池在使用过程中会产生大量的热量，影响其电池的循环寿命和安全，尤其是对大容量电池的影响较大，实时监测锂电池内部温度变化情况能最直接有效判断电池健康状况。在现有技术中都是通过在电芯的极耳处或者极耳与电芯之间、电芯和外壳之间设置温度传感器来监测电池温度的变化情况，然而这与电芯的发热源的温度变化真实情况会存在一些滞后。
因此，研究一种新型内置温度传感器的锂电池已为急需。
(三)发明内容
本发明针对上述现有技术的不足而提供一种能实现电池内部锂离子温度监测的锂电池。
本发明为解决上述问题所采用的技术方案为：一种锂电池，包括电芯和外壳，电芯设置在外壳内，电芯由极片组成，其特征在于所述凹区的大小与光纤光栅温度传感器大小相匹配。光纤光栅易受到外界折射率的影响，灵敏度较高且其尺寸微小，耐腐蚀、抗电磁辐射、抗干扰能力强等特点使其广泛应用于温度检测，尤其在微小空间里的应用更具优势。进一步地，将光纤光栅温度传感器设置在极片中，可以在第一时间监测电池内部的温度变化；当电池温度过高或处于低温状态时，通过光纤光栅温度传感器的监测能及时快速地对电池做出相应的调控。
进一步的，本发明的特征还在于凹区中设置的光纤光栅温度传感器为裸光纤光栅。
进一步的，本发明的特征还在于所述光纤光栅温度传感器包括纤芯、包层、涂覆层及纤芯上的光栅。
进一步的，本发明的特征还在于极片涂布层的材料为磷酸铁锂、钴酸锂或三元材料。
进一步的，本发明的特征还在于极片涂布层的材料为石墨材料。
此外，本发明还具有如下优点及有益效果：
1.能实时监测电芯内部的温度，及时反映电池的工作温度情况，提升电池使用的安全性并及时作出电池热失控事件的应对措施。
2.实现了对锂电池组的安全管理，增长了电池寿命。提供了安全管理策略和均衡管理，使电池保持较好的一致性，可有效提高电池的寿命。
(四)附图说明
图1是本发明中极片的示意图。
图2、图3是本发明中光纤光栅温度传感器4的结构示意图。
图中，1为集流体、2为涂布层、3为凹区、4为光纤光栅温度传感器、5为纤芯、6为包层、7为涂覆层、8为光栅，9为裸光纤光栅。
(五)具体实施方式
下面结合附图对本发明作进一步详细说明。
一种锂电池，包括电芯和外壳，电芯设置在外壳内，电芯由极片组成，其特征在于所述涂布层上设置有凹区，凹区中设置有光纤光栅温度传感器，所述凹区的大小与光纤光栅温度传感器大小相匹配。如图1所示，锂电池里面的极片包括集流体1、涂布层2，涂布层2涂布在集流体1上，所述涂布层2上设置有凹区3，凹区中设置有光纤光栅温度传感器，所述凹区的大小与光纤光栅温度传感器大小相匹配。
如图2、3所示，所述光纤光栅温度传感器4包括纤芯5、包层6、涂覆层7及纤芯上的光栅8，裸光纤光栅9是由去掉了涂覆层7的纤芯5和包层6组成的。

Claims (3)

1.一种锂电池，包括电芯和外壳，电芯设置在外壳内，电芯由极片组成，极片包括集流体、涂布层，涂布层涂布在集流体上，其特征在于所述涂布层上设置有凹区，凹区中设置有光纤光栅温度传感器，所述凹区的大小与光纤光栅温度传感器大小相匹配。
2.根据权利要求1所述的锂电池，其特征在于光纤光栅温度传感器的直径为9～280μm。
3.根据权利要求1所述的锂电池，其特征在于涂布层的厚度为80～300μm。
CN201710794007.9A 2017-09-05 2017-09-05 一种锂电池 Withdrawn CN107394211A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710794007.9A CN107394211A (zh) 2017-09-05 2017-09-05 一种锂电池

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710794007.9A CN107394211A (zh) 2017-09-05 2017-09-05 一种锂电池

Publications (1)

Publication Number Publication Date
CN107394211A true CN107394211A (zh) 2017-11-24

Family

ID=60351724

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710794007.9A Withdrawn CN107394211A (zh) 2017-09-05 2017-09-05 一种锂电池

Country Status (1)

Country Link
CN (1) CN107394211A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112054254A (zh) * 2020-08-18 2020-12-08 暨南大学 电池光纤原位检测系统及方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112054254A (zh) * 2020-08-18 2020-12-08 暨南大学 电池光纤原位检测系统及方法

Similar Documents

Publication Publication Date Title
CN107623127A (zh) 一种锂电池
CN107394210A (zh) 一种锂电池
Yoshino The birth of the lithium‐ion battery
Wu et al. Improving battery safety by early detection of internal shorting with a bifunctional separator
Zhang et al. A zinc‐ion battery‐type self‐powered pressure sensor with long service life
CN108511783A (zh) 一种锂电池
CN204088519U (zh) 大型太阳能无人机储能电源
Jin et al. Facile and effective positive temperature coefficient (PTC) layer for safer lithium-ion batteries
CN108511829A (zh) 一种锂电池
Jiang et al. Review of the charging safety and charging safety protection of electric vehicles
CN110416490A (zh) 一种兼顾能量密度的可提供双重安全保护的锂离子电池正极片
Ouyang et al. A comparative study on the degradation behaviors of overcharged lithium‐ion batteries under different ambient temperatures
CN108054438B (zh) 铝塑膜及其用途与包含其的电池
Bian et al. Thermal runaway hazard characteristics and influencing factors of Li‐ion battery packs under high‐rate charge condition
CN104241716B (zh) 大型太阳能无人机储能电源
Meng et al. Large-scale Li-ion battery research and application in mining industry
CN108258340A (zh) 一种带气体监控装置的电池系统
CN107611449A (zh) 一种锂电池
CN107634180A (zh) 一种极片
Hu et al. Polyimide‐Based Materials for Lithium‐Ion Battery Separator Applications: A Bibliometric Study
CN107394211A (zh) 一种锂电池
CN110364681A (zh) 一种三重保护的高安全性的锂离子电池正极片
CN206564290U (zh) 集流体及电池
CN108511833A (zh) 一种锂电池
CN105372601A (zh) 一种检测蓄电池使用寿命的方法

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