CN106025186A - 一种锂离子电池及其制备方法 - Google Patents
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 9
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000005030 aluminium foil Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052744 lithium Inorganic materials 0.000 abstract description 7
- 229910021389 graphene Inorganic materials 0.000 abstract description 2
- YTXFOSVCYYHADT-UHFFFAOYSA-N 2,1,3-benzoxadiazol-5-ol Chemical compound C1=C(O)C=CC2=NON=C21 YTXFOSVCYYHADT-UHFFFAOYSA-N 0.000 abstract 1
- 239000002033 PVDF binder Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 4
- 238000001467 acupuncture Methods 0.000 description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- -1 conductive black Chemical compound 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
本发明公开一种锂离子电池,包括正极片、负极片、隔膜、电解液、钢壳、盖帽,所述正极片包括如下按质量分数计的组分:钴酸锂66.85~87.75%;锰酸锂9.75~28.65%;石墨烯0.5~1%;导电炭黑1~1.5%;聚偏氟乙烯1~2%。本发明还提供了负极片的组成及制备方法和锂离子电池的制备方法。本发明所提供的锂离子电池具有安全性能高、体积能量大、功率大及循环性能好的优点。
Description
技术领域
本发明涉及电池领域,具体涉及一种锂离子电池及其制备方法。
背景技术
随着移动电子设备的发展,电池的需求越来越大,对电池的容量、电压以及使用寿命都提出了更高的要求。锂离子电池是一种二次电池(充电电池),它主要依靠锂离子在正极和负极之间移动来工作。然而市面上的锂离子电池存在着电芯的安全性能差、容量低、单位体积容量低、功率低、以及循环性能差的多种缺点。
发明内容
为了克服现有技术的不足,本发明的第一个目的在于提供一种锂离子电池,本发明所提供的锂离子电池具有安全性能高、体积能量大、功率大及循环性能好的特点。
本发明的第二个目的是为了提供一种上述电池中正极片、负极片以及锂离子电池的制备方法。
实现本发明的目的可以通过采取如下技术方案达到:
一种锂离子电池,包括正极片、负极片、隔膜、电解液、钢壳、盖帽,所述正极片包括如下按质量分数计的组分:
优选地,所述负极片包括如下按质量分数计的组分:
优选地,所述硅碳由氧化亚硅和石墨组成,氧化亚硅与石墨重量比为(0.1~0.5):(99.5~99.9)。
优选地,所述正极片由如下方法制备而成:
(1)将各组分加入双行星打浆机中,在自转速度为48转/min、公转速度为1700转/min的条件下搅拌2h制成浆料;
(2)采用高速分散机将步骤(1)获得的浆料进行分散,高速分散机在转速为3500~4500转/min的条件下分散浆料,直至浆料粘度达到7000~9000mPa.s;
(3)将步骤(2)所获浆料按照230~270g/㎡的面密度涂覆在12~16μm厚的铝箔上,烘干制成正极片;
(4)按照活性物3.835~4.055g/mm3的压实密度进行滚压制成密实的正极片;
(5)将正极片分切为57~58mm宽的正极片。
优选地,步骤(3)中将正极片烘干至含水量小于等于0.15%。
优选地,所述负极片由如下方法制备而成:
(1)将各组分加入到双行星打浆机中,在自转速度为48转/min公转速度为1500转/min的条件下搅拌2h制成浆料;
(2)采用高速分散机将步骤(1)获得的浆料进行分散,高速分散机在转速为3000~4000转/min的条件下分散浆料,直至浆料粘度达到5000~7000mPa.s;
(3)按照80.5~94.5g/㎡的面密度涂覆在8~10μm厚的铜箔上,烘干制成负极片;
(4)按照活性物1.6~1.7g/mm3的压实密度进行滚压制成密实的负极片;
(5)将负极片分切为58.5-59.5mm宽的负极片。
优选地,步骤(3)中将负极片烘干至含水量小于等于0.15%。
本发明还提供一种锂离子电池的制备方法,包括如下步骤:
(1)将正极片、负极片分别按照要求安装在全自动卷绕机上,采用隔膜隔离正极片和负极片,同时正极片焊接铝带正极耳,负极片焊接镍带负极耳进行卷绕,制成卷芯;所述隔膜为陶瓷隔膜;
(2)将卷芯插入治具中,放入真空烤箱,通过抽真空至-85~-95MPa,在75~95℃之间恒温恒压烘烤,之后充氮至气压为-35~-45MPa;抽真空、烘烤、充氮气循环实施14~18小时,至卷芯中水份含量≤200PPM;
(3)将卷芯安装进钢壳中,焊接负极耳与钢壳,插入PIN钢管,安装上垫片,滚槽,测试短路,注入5.3~5.7g电解液,焊接正极耳与盖帽,再将盖帽与钢壳扣合密封形成电芯;清晰电芯外表面;
(4)将电芯放置在温度为35~45℃的环境下活化30~40小时后,安装到化成柜上进行化成;将电芯先在温度35~45℃的环境下老化五天,然后对电芯进行电压内阻筛选,筛选电芯分容单充电压在3.6~3.9V的电芯,再放在温度35~45℃的环境下老化五天,制成锂离子电池。
优选地,所述陶瓷隔膜由PE基材双面各涂覆α晶型三氧化二铝制备而成。
优选地,步骤(3)中的各项操作在环境温度为20-25℃、露点≦-38℃的环境中完成。
相比现有技术,本发明的有益效果在于:
1、本发明采用钴酸锂、锰酸锂、石墨烯、导电炭黑制成正极片,采用硅碳、导电炭黑、羧甲基纤维素钠、丁苯橡胶制成负极片,使本发明所提供的电芯具有针刺通过率高、安全性能高、循环性能好的优点。
2、通过本发明中所提供的正极片、负极片的制备方法以及锂离子电池的制备方法,使本发明所提供的正极片、负极片以及卷芯的含水量低,不易造成电池短路,使本发明所提供的锂离子电池具有使用寿命长,使用安全的优点。
具体实施方式
下面,结合具体实施方式,对本发明做进一步描述:
实施例1:
一种锂离子电池正极片包括如下按质量分数计的组分:
所述正极片由如下方法制备而成:
(1)将各组分加入双行星打浆机中,在自转速度为48转/min公转速度为1700转/min的条件下搅拌2h制成浆料;
(2)用高速分散机在转速为3500转/min条件下进行分散步骤(1)获得的浆料,至粘度达到7000mPa.s;
(3)将步骤(2)所获浆料按照230g/㎡的面密度涂覆在12μm厚的铝箔上,烘干至含水量≤0.15%制成正极片;
(4)按照活性物3.835g/mm3的压实密度进行滚压制成密实的正极片;
(5)将正极片分切为57mm宽的正极片。
实施例2
一种锂离子电池正极片包括如下按质量分数计的组分:
所述正极片由如下方法制备而成:
(1)将各组分加入双行星打浆机中,在自转速度为48转/min公转速度为1700转/min的条件下搅拌2h制成浆料;
(2)再用高速分散机在转速为4500转/min条件下进行分散步骤(1)获得的浆料,至粘度达到9000mPa.s;
(3)将步骤(2)所获浆料按照270g/㎡的面密度涂覆在16μm厚的铝箔上,烘干至含水量≤0.15%制成正极片;
(4)按照活性物4.055g/mm3的压实密度进行滚压制成密实的正极片;
(5)将正极片分切为58mm宽的正极片。
实施例3
一种锂离子电池正极片包括如下按质量分数计的组分:
所述正极片由如下方法制备而成:
(1)将各组分加入双行星打浆机中,在自转速度为48转/min公转速度为1700转/min的条件下搅拌2h制成浆料;
(2)再用高速分散机在转速为4000转/min条件下进行分散步骤(1)获得的浆料,至粘度达到8000mPa.s;
(3)将步骤(2)所获浆料按照250g/㎡的面密度涂覆在14μm厚的铝箔上,烘干至含水量≤0.15%制成正极片;
(4)按照活性物3.95g/mm3的压实密度进行滚压制成密实的正极片;
(5)将正极片分切为57.5mm宽的正极片。
实施例4
一种锂离子电池正极片包括如下按质量分数计的组分:
所述正极片由如下方法制备而成:
(1)将各组分加入双行星打浆机中,在自转速度为40转/min公转速度为1400转/min的条件下搅拌1h制成浆料;
(2)再用高速分散机在转速为4000转/min条件下进行分散步骤(1)获得的浆料,至粘度达到5000mPa.s;
(3)将步骤(2)所获浆料按照200g/㎡的面密度涂覆在10μm厚的铝箔上,烘干至含水量≤0.2%制成正极片;
(4)按照活性物2.5g/mm3的压实密度进行滚压制成密实的正极片;
(5)将正极片分切为60.5mm宽的正极片。
实施例5
一种锂离子电池负极片,所述负极片包括如下按质量分数计的组分:
硅碳 97.5%;
羧甲基纤维素钠 1%;
丁苯橡胶 1.5%。
所述硅碳由氧化亚硅和石墨组成,氧化亚硅与石墨重量比为0.1:99.9。
所述负极片由如下方法制备而成:
(1)将各组分加入到双行星打浆机中,在自转速度为48转/min公转速度为1500转/min的条件下搅拌2h制成浆料;
(2)再用高速分散机在转速为4000转/min的条件下,进行分散至浆料粘度达到7000mPa.s;
(3)按照94.5g/㎡的面密度涂覆10μm厚的铜箔上,烘干至水分≤0.15%制成负极片;
(4)按照活性物1.7g/mm3的压实密度进行滚压制成密实的负极片;
(5)将负极片分切为59.5mm宽的负极片。
实施例6
一种锂离子电池负极片,所述负极片包括如下按质量分数计的组分:
所述硅碳由氧化亚硅和石墨组成,氧化亚硅与石墨重量比为0.5:99.5。
所述负极片由如下方法制备而成:
(1)将各组分加入到双行星打浆机中,在自转速度为48转/min公转速度为1500转/min的条件下搅拌2h制成浆料;
(2)再用高速分散机在转速为3000转/min的条件下,进行分散至浆料粘度达到5000mPa.s;
(3)按照80.5g/㎡的面密度涂覆在8μm厚的铜箔上,烘干至水分≤0.15%制成负极片;
(4)按照活性物1.6g/mm3的压实密度进行滚压制成密实的负极片;
(5)将负极片分切为58.5mm宽的负极片。
实施例7
一种锂离子电池负极片,所述负极片包括如下按质量分数计的组分:
所述硅碳由氧化亚硅和石墨组成,氧化亚硅与石墨重量比为0.3:99.7。
所述负极片由如下方法制备而成:
(1)将各组分加入到双行星打浆机中,在自转速度为48转/min公转速度为1500转/min的条件下搅拌2h制成浆料;
(2)再用高速分散机在转速为3500转/min的条件下,进行分散至浆料粘度达到6000mPa.s;
(3)按照90g/㎡的面密度涂覆在9μm厚的铜箔上,烘干至水分≤0.15%制成负极片;
(4)按照活性物1.65g/mm3的压实密度进行滚压制成密实的负极片;
(5)将负极片分切为59mm宽的负极片。
实施例8
一种锂离子电池负极片,所述负极片包括如下按质量分数计的组分:
所述负极片由如下方法制备而成:
(1)将各组分加入到双行星打浆机中,在自转速度为40转/min公转速度为1200转/min的条件下搅拌1h制成浆料;
(2)再用高速分散机在转速为2000转/min的条件下,进行分散至浆料粘度达到4500mPa.s;
(3)按照70g/㎡的面密度涂覆在13μm厚的铜箔上,烘干至水分≤0.25%制成负极片;
(4)按照活性物1.35g/mm3的压实密度进行滚压制成密实的负极片;
(5)将负极片分切为63mm宽的负极片。
实施例9
一种锂离子电池的制备方法,包括如下步骤:
(1)将正极片、负极片分别按照要求安装在全自动卷绕机上,采用陶瓷隔膜隔离正极片和负极片,同时正极片焊接铝带正极耳,负极片焊接镍带负极耳进行卷绕,制成卷芯;所述陶瓷隔膜由PE基材双面各涂覆α晶型三氧化二铝制备而成。
(2)将卷芯插入治具中,放入真空烤箱,通过抽真空至-85MPa,在75~℃恒温恒压烘烤,之后充氮至气压为-35MPa;抽真空、烘烤、充氮气循环实施14小时,至卷芯中水份含量≤200PPM;
(3)将卷芯安装进钢壳中,焊接负极耳与钢壳,插入PIN钢管,安装上垫片,滚槽,测试短路,注入5.3g电解液,焊接正极耳与盖帽,再将盖帽与钢壳扣合密封形成电芯;清晰电芯外表面;本步骤中的各项操作在环境温度为20℃、露点≦-38℃的环境中完成。
(4)将电芯放置在温度为35℃的环境下活化30小时后,安装到化成柜上进行化成;将电芯先在温度35℃的环境下老化五天,然后对电芯进行电压内阻筛选,筛选电芯分容单充电压在3.6~3.9V的电芯,再放在温度35℃的环境下老化五天,制成锂离子电池。
实施例10
一种锂离子电池的制备方法,包括如下步骤:
(1)将正极片、负极片分别按照要求安装在全自动卷绕机上,采用陶瓷隔膜隔离正极片和负极片,同时正极片焊接铝带正极耳,负极片焊接镍带负极耳进行卷绕,制成卷芯;所述陶瓷隔膜由PE基材双面各涂覆α晶型三氧化二铝制备而成。
(2)将卷芯插入治具中,放入真空烤箱,通过抽真空至-95MPa,在95℃恒温恒压烘烤,之后充氮至气压为-45MPa;抽真空、烘烤、充氮气循环实施18小时,至卷芯中水份含量≤200PPM;
(3)将卷芯安装进钢壳中,焊接负极耳与钢壳,插入PIN钢管,安装上垫片,滚槽,测试短路,注入5.7g电解液,焊接正极耳与盖帽,再将盖帽与钢壳扣合密封形成电芯;清晰电芯外表面;本步骤中的各项操作在环境温度为25℃、露点≦-38℃的环境中完成。
(4)将电芯放置在温度为45℃的环境下活化40小时后,安装到化成柜上进行化成;将电芯先在温度45℃的环境下老化五天,然后对电芯进行电压内阻筛选,筛选电芯分容单充电压在3.6~3.9V的电芯,再放在温度45℃的环境下老化五天,制成锂离子电池。
实施例11
一种锂离子电池的制备方法,包括如下步骤:
(1)将正极片、负极片分别按照要求安装在全自动卷绕机上,采用陶瓷隔膜隔离正极片和负极片,同时正极片焊接铝带正极耳,负极片焊接镍带负极耳进行卷绕,制成卷芯;所述陶瓷隔膜由PE基材双面各涂覆α晶型三氧化二铝制备而成。
(2)将卷芯插入治具中,放入真空烤箱,通过抽真空至-90MPa,在85℃恒温恒压烘烤,之后充氮至气压为-40MPa;抽真空、烘烤、充氮气循环实施16小时,至卷芯中水份含量≤200PPM;
(3)将卷芯安装进钢壳中,焊接负极耳与钢壳,插入PIN钢管,安装上垫片,滚槽,测试短路,注入5.5g电解液,焊接正极耳与盖帽,再将盖帽与钢壳扣合密封形成电芯;清晰电芯外表面;本步骤中的各项操作在环境温度为23℃、露点≦-38℃的环境中完成。
(4)将电芯放置在温度为40℃的环境下活化35小时后,安装到化成柜上进行化成;将电芯先在温度40℃的环境下老化五天,然后对电芯进行电压内阻筛选,筛选电芯分容单充电压在3.6~3.9V的电芯,再放在温度40℃的环境下老化五天,制成锂离子电池。
实施例12~15
选择实施例1~4所提供的正极片,实施例5~8所提供的负极片,根据实施例9~11所提供的锂离子电池制造方法,制造锂离子电池,具体组合情况如下表1。将制备好后的锂离子电池进行针刺通过率、循环性能、体积功率的检测,具有如表1所示。各实施例中的电池与现有技术相比,均优于现有技术;实施例14中针刺通过率百分之一百、循环性能优秀、体积功率大(4973WH/L),在实施例中的电池中表现最优秀。
表1
对于本领域的技术人员来说,可根据以上描述的技术方案以及构思,做出其它各种相应的改变以及变形,而所有的这些改变以及变形都应该属于本发明权利要求的保护范围之内。
Claims (10)
1.一种锂离子电池,其特征在于包括正极片、负极片、隔膜、电解液、钢壳、盖帽,所述正极片包括如下按质量分数计的组分:
2.根据权利要求1所述的锂离子电池其特征在于:所述负极片包括如下按质量分数计的组分:
3.根据权利要求2所述的锂离子电池其特征在于:所述硅碳由氧化亚硅和石墨组成,氧化亚硅与石墨重量比为(0.1~0.5):(99.5~99.9)。
4.根据权利要求1所述的锂离子电池,其特征在于:所述正极片由如下方法制备而成:
(1)将各组分加入双行星打浆机中,在自转速度为48转/min、公转速度为1700转/min的条件下搅拌2h制成浆料;
(2)采用高速分散机将步骤(1)获得的浆料进行分散,高速分散机在转速为3500~4500转/min的条件下分散浆料,直至浆料粘度达到7000~9000mPa.s;
(3)将步骤(2)所获浆料按照230~270g/㎡的面密度涂覆在12~16μm厚的铝箔上,烘干制成正极片;
(4)按照活性物3.835~4.055g/mm3的压实密度进行滚压制成密实的正极片;
(5)将正极片分切为57~58mm宽的正极片。
5.根据权利要求4所述的锂离子电池,其特征在于:步骤(3)中将正极片烘干至含水量小于等于0.15%。
6.根据权利要求3所述的锂离子电池其特征在于:所述负极片由如下方法制备而成:
(1)将各组分加入到双行星打浆机中,在自转速度为48转/min公转速度为1500转/min的条件下搅拌2h制成浆料;
(2)采用高速分散机将步骤(1)获得的浆料进行分散,高速分散机在转速为3000~4000转/min的条件下分散浆料,直至浆料粘度达到5000~7000mPa.s;
(3)按照80.5~94.5g/㎡的面密度涂覆在8~10μm厚的铜箔上,烘干制成负极片;
(4)按照活性物1.6~1.7g/mm3的压实密度进行滚压制成密实的负极片;
(5)将负极片分切为58.5-59.5mm宽的负极片。
7.根据权利要求6所述的锂离子电池,其特征在于:步骤(3)中将负极片烘干至含水量小于等于0.15%。
8.一种如权利要求1所述的锂离子电池的制备方法,其特征在于包括如下步骤:
(1)将正极片、负极片分别按照要求安装在全自动卷绕机上,采用隔膜隔离正极片和负极片,同时正极片焊接铝带正极耳,负极片焊接镍带负极耳进行卷绕,制成卷芯;所述隔膜为陶瓷隔膜;
(2)将卷芯插入治具中,放入真空烤箱,通过抽真空至-85~-95MPa,在75~95℃之间恒温恒压烘烤,之后充氮至气压为-35~-45MPa;抽真空、烘烤、充氮气循环实施14~18小时,至卷芯中水份含量≤200PPM;
(3)将卷芯安装进钢壳中,焊接负极耳与钢壳,插入PIN钢管,安装上垫片,滚槽,测试短路,注入5.3~5.7g电解液,焊接正极耳与盖帽,再将盖帽与钢壳扣合密封形成电芯;清晰电芯外表面;
(4)将电芯放置在温度为35~45℃的环境下活化30~40小时后,安装到化成柜上进行化成;将电芯先在温度35~45℃的环境下老化五天,然后对电芯进行电压内阻筛选,筛选电芯分容单充电压在3.6~3.9V的电芯,再放在温度35~45℃的环境下老化五天,制成锂离子电池。
9.根据权利要求8所述的锂离子电池的制备方法,其特征在于:所述陶瓷隔膜由PE基材双面各涂覆α晶型三氧化二铝制备而成。
10.根据权利要求8所述的锂离子电池的制备方法,其特征在于:步骤(3)中的各项操作在环境温度为20-25℃、露点≦-38℃的环境中完成。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101083340A (zh) * | 2007-07-03 | 2007-12-05 | 浙江省浦江吴氏科技有限公司 | 一种锂离子动力电池 |
CN104022278A (zh) * | 2014-06-19 | 2014-09-03 | 广西卓能新能源科技有限公司 | 一种圆柱锂离子电池电芯及其制备方法 |
CN104134818A (zh) * | 2014-08-18 | 2014-11-05 | 奇瑞汽车股份有限公司 | 一种高比能量锂离子电池及其制备方法 |
CN104377348A (zh) * | 2014-11-14 | 2015-02-25 | 刘广源 | 一种高安全性能防过充的锂离子电池正极浆料配方及正极片生产方法 |
CN104795559A (zh) * | 2014-01-21 | 2015-07-22 | 万向A一二三系统有限公司 | 一种高能量密度的锂离子动力电池 |
CN105428728A (zh) * | 2015-12-29 | 2016-03-23 | 吉安市优特利科技有限公司 | 聚合物动力电池及制作方法 |
-
2016
- 2016-07-28 CN CN201610613915.9A patent/CN106025186A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101083340A (zh) * | 2007-07-03 | 2007-12-05 | 浙江省浦江吴氏科技有限公司 | 一种锂离子动力电池 |
CN104795559A (zh) * | 2014-01-21 | 2015-07-22 | 万向A一二三系统有限公司 | 一种高能量密度的锂离子动力电池 |
CN104022278A (zh) * | 2014-06-19 | 2014-09-03 | 广西卓能新能源科技有限公司 | 一种圆柱锂离子电池电芯及其制备方法 |
CN104134818A (zh) * | 2014-08-18 | 2014-11-05 | 奇瑞汽车股份有限公司 | 一种高比能量锂离子电池及其制备方法 |
CN104377348A (zh) * | 2014-11-14 | 2015-02-25 | 刘广源 | 一种高安全性能防过充的锂离子电池正极浆料配方及正极片生产方法 |
CN105428728A (zh) * | 2015-12-29 | 2016-03-23 | 吉安市优特利科技有限公司 | 聚合物动力电池及制作方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112635812A (zh) * | 2019-09-24 | 2021-04-09 | 深圳市莫提尔科技有限公司 | 一种高功率磷酸铁锂启停锂离子电池及其制备方法 |
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