CN206293555U - A kind of flexible package graphene lithium ion battery - Google Patents
A kind of flexible package graphene lithium ion battery Download PDFInfo
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- CN206293555U CN206293555U CN201621329576.3U CN201621329576U CN206293555U CN 206293555 U CN206293555 U CN 206293555U CN 201621329576 U CN201621329576 U CN 201621329576U CN 206293555 U CN206293555 U CN 206293555U
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000006258 conductive agent Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 2
- 229910052493 LiFePO4 Inorganic materials 0.000 claims 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 239000005030 aluminium foil Substances 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 210000005069 ears Anatomy 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 238000009459 flexible packaging Methods 0.000 abstract description 9
- 238000005457 optimization Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000007772 electrode material Substances 0.000 description 5
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 2
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
本实用新型主要涉及软包装锂离子电池，涉及一种软包装石墨烯锂离子电池结构紧凑合理、重量轻、内阻小、充电快、安全性高，与传统的锂离子电池相比具有较大的技术优势，尤其适用于动力电池等对电池充放电倍率要求高的领域。软包装石墨烯锂离子电池包括软包装外壳、正电极、负电极、正极极耳、负极极耳、隔膜、电解液，正、负电极包括正、负极集流体、导电涂层、正、负极电池材料，正、负极集流体上涂覆导电涂层，并在导电涂层上涂覆正、负极电池材料，从而组成正、负电极，正电极和所述负电极之间用隔膜隔开并交错排列，整体浸泡在所述电解液中组成电芯，电芯封装在所述软包装外壳中，正电极和负电极用正极极耳和负极极耳引出。
The utility model mainly relates to a soft-packed lithium-ion battery, and relates to a soft-packed graphene lithium-ion battery with compact and reasonable structure, light weight, small internal resistance, fast charging and high safety. Compared with traditional lithium-ion batteries, the utility model has greater technical Advantages, especially for power batteries and other fields that require high battery charge and discharge rates. Flexible packaging graphene lithium-ion battery includes flexible packaging shell, positive electrode, negative electrode, positive tab, negative tab, separator, electrolyte, positive and negative electrodes include positive and negative current collectors, conductive coating, positive and negative battery materials, The positive and negative current collectors are coated with a conductive coating, and the positive and negative battery materials are coated on the conductive coating to form positive and negative electrodes. The positive electrode and the negative electrode are separated by a separator and arranged in a staggered manner The whole battery is soaked in the electrolyte to form a battery cell, and the battery cell is packaged in the soft package shell, and the positive electrode and the negative electrode are led out by the positive pole lug and the negative pole lug.
Description
技术领域technical field
本实用新型主要涉及软包装锂离子电池，更具体地说，涉及一种软包装石墨烯锂离子电池。The utility model mainly relates to a soft-package lithium-ion battery, more specifically, relates to a soft-package graphene lithium-ion battery.
背景技术Background technique
锂离子电池是一种二次充电电池，其充放电的过程主要是锂离子在正负电极之间的嵌入和脱出，因此也被称为“摇椅电池”，电极材料是锂离子电池储能的核心部分，当前常用的锂离子正极材料包括磷酸铁锂、钴酸锂、锰酸锂、镍钴锰酸锂三元材料等，常用负极材料有石墨、钛酸锂等。锂离子电池的能量密度高、安全性好，因此成为目前最常用的电子产品储能电源，同时也被认为是动力电池的最理想选择。然而由于锂离子电池电极材料自身导电性不强以及绝缘性较强的粘结剂的使用，使得锂离子电池内阻较大，影响其倍率充放电性能，并容易由于发热产生安全隐患。石墨烯是从天然石墨中剥离出来的单层物质，其具有超高的比表面积和超强的导电性，是目前人类所发现的天然材料中导电性最强的材料，通过将石墨烯用于锂离子电池中可极大提升电极的导电性能，这对于提升锂离子电池的倍率充放电性能具有重要意义。Lithium-ion battery is a secondary rechargeable battery. The process of charging and discharging is mainly the insertion and extraction of lithium ions between the positive and negative electrodes, so it is also called "rocking chair battery". The electrode material is the energy storage of lithium-ion batteries. For the core part, currently commonly used lithium-ion cathode materials include lithium iron phosphate, lithium cobaltate, lithium manganate, nickel-cobalt lithium manganate ternary materials, etc. Commonly used negative electrode materials include graphite, lithium titanate, etc. Lithium-ion batteries have high energy density and good safety, so they have become the most commonly used energy storage power source for electronic products, and are also considered to be the most ideal choice for power batteries. However, due to the low conductivity of the lithium-ion battery electrode material itself and the use of a strong insulating binder, the internal resistance of the lithium-ion battery is relatively large, which affects its rate charge and discharge performance, and is prone to safety hazards due to heat generation. Graphene is a single-layer substance stripped from natural graphite. It has a super high specific surface area and super conductivity. It is the most conductive material among natural materials discovered by humans. By using graphene for In lithium-ion batteries, the conductivity of electrodes can be greatly improved, which is of great significance for improving the rate charge and discharge performance of lithium-ion batteries.
实用新型内容Utility model content
本实用新型主要解决的技术问题是提供一种软包装石墨烯锂离子电池，克服当前锂离子电池易发热、充电慢等不足之处，提供一种结构紧凑、重量低、内阻小、充电快、安全性高的软包装石墨烯锂离子电池。The technical problem mainly solved by the utility model is to provide a soft-packed graphene lithium-ion battery, which overcomes the shortcomings of current lithium-ion batteries such as easy heating and slow charging, and provides a compact structure, low weight, small internal resistance, fast charging, High safety flexible packaging graphene lithium-ion battery.
为解决上述技术问题，本实用新型一种软包装石墨烯锂离子电池包括软包装外壳、正电极、负电极、正极极耳、负极极耳、隔膜、电解液，所述正电极包括正极集流体、导电涂层、正极电池材料，所述负电极包括负极集流体、导电涂层、负极电池材料，克服当前锂离子电池易发热、充电慢等不足之处，提供一种结构紧凑、重量低、内阻小、充电快、安全性高的软包装石墨烯锂离子电池。In order to solve the above-mentioned technical problems, a kind of flexible packaging graphene lithium-ion battery of the utility model comprises flexible packaging casing, positive electrode, negative electrode, positive electrode lug, negative pole lug, separator, electrolyte solution, and described positive electrode comprises positive electrode current collector, conductive Coating, positive electrode battery material, the negative electrode includes negative electrode current collector, conductive coating, negative electrode battery material, overcomes the disadvantages of current lithium-ion batteries such as easy heating, slow charging, etc., and provides a compact structure, low weight, internal resistance Small, fast-charging, and highly safe flexible-package graphene lithium-ion batteries.
其中，所述正极集流体上涂覆导电涂层，并在导电涂层上涂覆正极电池材料，从而组成正电极；所述负极集流体上均涂覆导电涂层，并在导电涂层上涂覆负极电池材料，从而组成负电极；所述正电极和所述负电极之间用隔膜隔开并交错排列，整体浸泡在所述电解液中组成电芯，电芯封装在所述软包装外壳中，所述正电极和所述负电极用所述正极极耳和所述负极极耳引出。Wherein, a conductive coating is coated on the positive electrode current collector, and a positive electrode battery material is coated on the conductive coating to form a positive electrode; a conductive coating is coated on the negative electrode current collector, and a conductive coating is coated on the conductive coating Coating the negative electrode battery material to form a negative electrode; the positive electrode and the negative electrode are separated by a separator and arranged in a staggered manner, and the whole is immersed in the electrolyte to form a battery cell, which is packaged in the soft packaging shell , the positive electrode and the negative electrode are led out by the positive electrode tab and the negative electrode tab.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池正极集流体采用铝箔。As a further optimization of the utility model, the utility model adopts aluminum foil as the current collector of the positive electrode of a soft-packed graphene lithium-ion battery.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述负极集流体采用铜箔。As a further optimization of the utility model, the negative electrode current collector of a soft-packed graphene lithium-ion battery of the utility model adopts copper foil.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述正极极耳采用铝极耳。As a further optimization of the utility model, the positive electrode lug of a soft-packed graphene lithium-ion battery of the utility model adopts an aluminum lug.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述负极极耳采用镍极耳。As a further optimization of the utility model, the negative electrode lug of a soft-packed graphene lithium-ion battery of the utility model adopts a nickel lug.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述导电涂层包括粘结剂和主要成分为石墨烯的导电剂。As a further optimization of the utility model, the conductive coating of a soft-package graphene lithium-ion battery of the utility model includes a binder and a conductive agent whose main component is graphene.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述软包装外壳采用铝塑复合膜。As a further optimization of the utility model, the soft package shell of a flexible package graphene lithium ion battery of the utility model adopts an aluminum-plastic composite film.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述正极电池材料采用磷酸铁锂或者钴酸锂或者锰酸锂或者镍钴锰酸锂三元材料。As a further optimization of the utility model, the anode battery material of a soft-package graphene lithium-ion battery of the utility model adopts lithium iron phosphate or lithium cobalt oxide or lithium manganate or nickel-cobalt lithium manganate ternary material.
作为本实用新型的进一步优化，本实用新型一种软包装石墨烯锂离子电池所述负极电池材料采用石墨或者钛酸锂。As a further optimization of the utility model, graphite or lithium titanate is used as the negative electrode battery material of a soft-package graphene lithium-ion battery of the utility model.
控制效果：本实用新型一种软包装石墨烯锂离子电池，克服当前锂离子电池易发热、充电慢等不足之处，提供一种结构紧凑、重量低、内阻小、充电快、安全性高的软包装石墨烯锂离子电池。Control effect: the utility model is a soft-packed graphene lithium-ion battery, which overcomes the shortcomings of current lithium-ion batteries such as easy heating and slow charging, and provides a compact structure, low weight, small internal resistance, fast charging, and high safety. Flexible packaging graphene lithium-ion battery.
附图说明Description of drawings
下面结合附图和具体实施方法对本实用新型做进一步详细的说明。Below in conjunction with accompanying drawing and specific implementation method, the utility model is described in further detail.
图1为本实用新型一种软包装石墨烯锂离子电池的结构示意图。Fig. 1 is the structural representation of a kind of flexible packaging graphene lithium-ion battery of the present utility model.
图2为本实用新型一种软包装石墨烯锂离子电池的图1A-A剖面示意图。Fig. 2 is a schematic cross-sectional view of Fig. 1A-A of a flexible-packaged graphene lithium-ion battery of the present invention.
图中：1-软包装外壳；2-正极极耳；3-负极极耳；4-正极集流体；5-负极集流体；6-石墨烯导电涂层；7-正极电池材料；8-负极电池材料；9-隔膜。In the figure: 1-soft packaging shell; 2-positive pole tab; 3-negative pole tab; 4-positive current collector; 5-negative current collector; 6-graphene conductive coating; 7-positive battery material; 8-negative battery Material; 9 - Diaphragm.
具体实施方式detailed description
下面结合附图对本实用新型的实施例作进一步详细描述。如图1与图2所示，本实用新型是在软包装外壳1中装有由正极集流体4、负极集流体5、正极集流体4和负极集流体5上的石墨烯导电涂层6、涂覆在石墨烯导电涂层6上的正极电池材料7和负极电池材料8、隔膜9组成的电芯，整个电芯浸泡在锂离子电解液中。正极集流体4和负极集流体5分别由正极极耳2和负极极耳3从外壳1中引出。Embodiments of the utility model are described in further detail below in conjunction with the accompanying drawings. As shown in Fig. 1 and Fig. 2, the utility model is equipped with a graphene conductive coating 6, coated The battery cell composed of the positive electrode battery material 7, the negative electrode battery material 8 and the diaphragm 9 covered on the graphene conductive coating 6 is soaked in the lithium ion electrolyte. The positive electrode current collector 4 and the negative electrode current collector 5 are drawn out from the casing 1 by the positive electrode tab 2 and the negative electrode tab 3 respectively.
其中，正极极耳2采用铝极耳，负极极耳3采用镍极耳，软包装外壳1采用冲压成型的铝塑复合膜；正极集流体4采用铝箔，负极集流体5采用铜箔，涂覆其上的石墨烯导电涂层6可以大大提升电极材料与集流体之间的导电能力；正极电池材料7采用磷酸铁锂、钴酸锂、锰酸锂、镍钴锰酸锂三元材料，负极电池材料8采用石墨、钛酸锂，充放电过程中，锂离子穿过隔膜9不断在正极电池材料7和负极电池材料8间实现嵌入-脱出，从而完成充放电过程。Among them, the positive pole tab 2 is made of aluminum tab, the negative pole tab 3 is made of nickel tab, and the flexible packaging shell 1 is made of stamped aluminum-plastic composite film; the positive current collector 4 is made of aluminum foil, and the negative current collector 5 is made of copper foil. The graphene conductive coating 6 on the top can greatly improve the conductivity between the electrode material and the current collector; the positive electrode battery material 7 uses lithium iron phosphate, lithium cobalt oxide, lithium manganate, nickel cobalt lithium manganate ternary materials, and the negative electrode battery The material 8 is made of graphite and lithium titanate. During the charging and discharging process, lithium ions pass through the diaphragm 9 to continuously intercalate and extract between the positive electrode battery material 7 and the negative electrode battery material 8, thereby completing the charging and discharging process.
本实用新型的一种软包装石墨烯锂离子电池，由于采用了铝塑复合膜作为外壳，因此整个电池单体具有重量轻、安全可靠等优点。The flexible package graphene lithium ion battery of the utility model adopts the aluminum-plastic composite film as the shell, so the whole battery cell has the advantages of light weight, safety and reliability.
本实用新型的一种软包装石墨烯锂离子电池，由于在正极集流体4和负极集流体5上涂覆了一层高导电石墨烯材料，因此有效降低了电极材料与集流体之间的接触电阻，有助于提升锂离子电池的功率密度，从而实现高倍率充放电的能力，并且有效减少锂离子电池充放电过程中产生的热量。经测试，本实用新型的能量密度达到197Wh/kg，功率密度达到1200W/kg，比未涂覆石墨烯导电材料制成的同等电极材料的锂离子电池分别提高了10％和38％，因此是一种较为先进的储能原件。A kind of flexible packaging graphene lithium ion battery of the present utility model, because a layer of highly conductive graphene material is coated on positive electrode current collector 4 and negative electrode current collector 5, therefore effectively reduces the contact resistance between electrode material and current collector , helps to increase the power density of lithium-ion batteries, thereby achieving high-rate charge and discharge capabilities, and effectively reducing the heat generated during the charge and discharge process of lithium-ion batteries. After testing, the energy density of the utility model reaches 197Wh/kg, and the power density reaches 1200W/kg, which are respectively increased by 10% and 38% compared with the lithium-ion battery of the same electrode material made of uncoated graphene conductive material, so it is A more advanced energy storage element.
虽然本实用新型已以较佳的实施例公开如上，但其并非用以限定本实用新型，任何熟悉此技术的人，在不脱离本实用新型的精神和范围内，都可以做各种改动和修饰，因此本实用新型的保护范围应该以权利要求书所界定的为准。Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model, and anyone familiar with this technology can make various changes and changes without departing from the spirit and scope of the utility model. modification, so the scope of protection of the utility model should be defined by the claims.
Claims (9)
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| CN201621329576.3U CN206293555U (en) | 2016-12-06 | 2016-12-06 | A kind of flexible package graphene lithium ion battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777271A (en) * | 2018-05-25 | 2018-11-09 | 福建巨电新能源股份有限公司 | Large-scale non-parallel lithium-ion battery module assembly structure |
| WO2021119911A1 (en) * | 2019-12-16 | 2021-06-24 | 宁德新能源科技有限公司 | Battery cell |
| CN120127276A (en) * | 2025-03-13 | 2025-06-10 | 西安瑟福能源科技有限公司 | A high-rate lithium carbon fluoride soft-pack battery cell and preparation method thereof |
-
2016
- 2016-12-06 CN CN201621329576.3U patent/CN206293555U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777271A (en) * | 2018-05-25 | 2018-11-09 | 福建巨电新能源股份有限公司 | Large-scale non-parallel lithium-ion battery module assembly structure |
| CN108777271B (en) * | 2018-05-25 | 2024-02-09 | 福建巨电新能源股份有限公司 | Large-sized parallel-connection-free lithium ion battery module assembly structure |
| WO2021119911A1 (en) * | 2019-12-16 | 2021-06-24 | 宁德新能源科技有限公司 | Battery cell |
| CN120127276A (en) * | 2025-03-13 | 2025-06-10 | 西安瑟福能源科技有限公司 | A high-rate lithium carbon fluoride soft-pack battery cell and preparation method thereof |
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