CN1211344A - 复合材 - Google Patents
复合材 Download PDFInfo
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- CN1211344A CN1211344A CN97192273A CN97192273A CN1211344A CN 1211344 A CN1211344 A CN 1211344A CN 97192273 A CN97192273 A CN 97192273A CN 97192273 A CN97192273 A CN 97192273A CN 1211344 A CN1211344 A CN 1211344A
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- metal
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- 239000000463 material Substances 0.000 title abstract description 10
- 238000005253 cladding Methods 0.000 title abstract 3
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 239000011888 foil Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 79
- 239000002184 metal Substances 0.000 claims description 79
- 239000002131 composite material Substances 0.000 claims description 35
- 239000002023 wood Substances 0.000 claims description 34
- 238000005530 etching Methods 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 26
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- 238000003490 calendering Methods 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 14
- 238000003825 pressing Methods 0.000 description 13
- 238000005097 cold rolling Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 238000002788 crimping Methods 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
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- 238000001755 magnetron sputter deposition Methods 0.000 description 5
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- 229910000737 Duralumin Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
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- 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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Abstract
本发明的目的在于,提供一种用于安全阀等的复合材,它尤其在低压下,能够以良好的精度在规定的压力下破裂而释放内压,并且制造容易。本发明的复合板材(19)是由穿有多个贯通孔(C)的金属基板(20A),和被层叠在上述金属基板(20A)上以封闭上述贯通孔(C)的金属箔(20B)构成的。
Description
本发明涉及层叠了设置有多个贯通孔的金属基板和金属箔的复合材。
以往,在使用锂、钠、钾等的碱金属作为负极的活性物质的电池中,有时因电池内的压力异常上升而使电池破裂,因而,需要在内压超常上升时向外部释放压力的安全阀,并提出了各种各样的结构。在这些安全阀中,为了确保安全性使得在电池破裂时不至于发生碎片和内部物质飞散伤人,特别要求在30kgf/cm2以下的低压下动作。
在将碱金属作为负极活性物质的非水电池中,还要求高密封性。在要求这样的高密封性的电池中,作为向外部释放内压升高时的内压的安全阀,有在日本特开昭63-285859号公报中刊载的安全阀。
该公报中刊载的安全阀,是通过使用冲压装置冷压电池容器壁面的一部分使其厚度成为原板材厚度的一半左右,在内压上升时当达到一定的内压时薄壁部分破裂,向外部释放内压的。
但是,要在30kgf/cm2以下的低压释放内压时,就需要使薄壁部分的厚度很薄,因此,如果通过冲压加工将壁面加工得非常薄,则在加工时在薄壁部分产生微小的裂纹,破坏密封性。另外,由于该加工,被加工过的薄壁部分硬化,但由于该加工硬化不均匀,所以即使通过冲压使薄壁部分的厚度一定,也存在在一定的压力下不一定破裂的缺点。
此外,作为使电池容器的壁的一部分薄壁化的方法,也可以尝试蚀刻法,但存在控制蚀刻后的剩余厚度为一定极其困难,并且在蚀刻部分上容易产生气孔,需要全部检查蚀刻后的薄壁部分等的缺点。
这样,在使用上述方法时,设置一定厚度的薄壁部分是极其困难的,特别是要在30kgf/cm2以下的低压使安全阀破裂时,不能得到重现性好稳定的动作压力。
作为解决上述缺点的方法,有这样的方法(日本特开平5-314959号公报揭示的方法),通过粘合具有贯通孔的金属板和另一薄壁金属板,使薄壁部分的厚度保持一定,就可以得到重现性好且稳定的30kgf/cm2以下的动作压力。
但是,这需要在真空炉中通过加热加压具有贯通孔的金属板和另一薄壁的金属板热压接形成,作为可以使用的金属材料必须是可以热压接的材料,限于同一金属,或者熔点等的物性相互差不多的金属。
在日本特开平5-314959号公报中揭示的例子中,认为不锈钢、铁、镍等理想。进而,为了热压接这些金属得到均匀的粘接力,需要预先用抛光等方法除去在金属表面上生成的氧化物薄膜后,加热到1000℃左右的高温,需要繁琐的操作以及设备。再有,这些薄壁的金属板通常是用冷轧法制成,大多产生加工硬化。即,由于加工硬化后的上述金属材料因高温加热而被退火,在加热粘接前后机械强度变化,因此,存在需要严密控制加热粘接前的材料的物性、加热温度、加压时间等,以使得加热粘接后的机械强度(内压升高时破裂的强度)为一定等的问题。
本发明的目的在于,提供一种尤其在特别低的压力下,可以以高精度在稳定的压力下破裂而释放内压,并且制造容易的安全阀等中使用的复合材。
权利要求1的复合材,由穿有多个贯通孔的金属板,和层叠在上述金属基板上用于封闭上述贯通孔的金属箔构成。
权利要求2的复合材,是干腐蚀穿有多个贯通孔的金属板或金属箔的至少一面,并且其蚀刻面相互作为内侧面被层叠。权利要求3的复合材,是在金属板上形成多个贯通孔,干腐蚀该金属板的一面,该蚀刻面作为内面与金属箔层叠。这些复合材,其金属基板或金属板最好是镀镍的。
图1是展示本发明的复合材的概略斜视图。
图2是展示本发明的复合材的制造方法的概略斜视图。
图3是展示本发明的复合材的制造方法的概略斜视图。
图4是展示将本发明的复合材用于安全阀片的情况下的实施形态的概略图。
图5是展示将安全阀片装在盖子上的情况下的实施形态的概略图。
本发明的复合材,在作为安全阀使用时,特别是在低压下,可以以高精度在一定的压力下破裂而释放内压,并且可以一次制造大量的安全阀用片。
以下,用实施例进一步详细说明本发明。
图1是展示本发明的复合材的概略斜视图。图2是展示本发明的复合材的制造方法的概略斜视图。图3是展示本发明的复合材的制造方法的概略斜视图。图4是展示将本发明的复合材用于安全阀片的情况下的实施形态的概略图。图5是展示将安全阀片装在盖子上的情况下的实施形态的概略图。在图1中,19是本发明的复合材,A是金属基板,B是金属箔,C是贯通孔,D是安全阀用片。
当将本发明的复合材作为安全阀用片D(参照图4)使用时,在30kgf/cm2以下,最好在20kgf/cm2以下的低压动作。为了实现上述目的,用于本发明的金属箔B虽取决于金属的种类,但最好是5~50μm的厚度。如果是5μm以下,在用于电池等的安全阀时,由于落地等的冲击容易破裂。
另一方面,如果在50μm以上时,即使使用破裂强度低的金属,在用于安全阀时,由于在30kgf/cm2以下的压力下也不破裂,在高压负荷下才破裂,结果有内压的容器自身破裂而碎片飞散,或内装物质喷出飞散,破坏了安全性。还不利于降低成本。
作为金属箔B的种类,由于在用于电池时需要对于电解液的碱性水溶液有耐腐蚀性,因此最好是钢箔、不锈钢箔、铜箔、铝箔、镍箔、镍铁合金箔等。
在用于电池以外的其他用途时,只要对于填充于容器内的物质稳定,在腐蚀等情况下不大量产生反应气体,就可以使用任何金属箔,除了上述箔外,还可以使用由锌、铅、黄铜、青铜、磷铜、炮铜、蒙乃尔合金等铜合金、硬铝等铝合金等构成的金属箔。
金属箔B可以使用由任何方法制成的箔,但一般直接使用由冷轧法制成的箔,或者冷轧后经退火处理的箔。
用于上述金属板A的金属板厚度,并不特别限定,但从强度以及经济的观点出发,为了容易使用焊接或铆接等方法将安全阀安装在容器上,通常板厚度是0.03~0.50mm,最好是0.05~0.10mm。
另外,作为用于金属板A的金属的种类,在用于电池,并且由金属箔和金属基板这2块金属构成的安全阀用片D中,当金属基板一侧直接接触电解液的碱性水溶液时,由于需要对碱性水溶液有耐腐蚀性,因此最好是将钢、不锈钢、铜、镍、镍铁合金等作为金属板。
当金属板A一侧不直接接触碱性水溶液时,不需要耐腐蚀性,只要对于填充在容器内的物质稳定,不使电池性能劣化,不大量产生反应气体等,就可以使用任何金属。
另外,即使上述的金属箔B和金属箔A是不同种类的金属,不用说也可以实现本发明的目的。
进而,上述金属基板A,可以用由任何方法制成的板,但是一般直接用由冷轧法制成的板,或者在冷轧后经退火处理的薄板。
在金属基板A上至少设置一个贯通孔C。该一个贯通孔C的大小和形状,根据安装安全阀用片D的容器的大小以及形状而不同,并不特别限定,通常使用直径1~10mm大小的圆型等最合适。
另外,例如也可以是长径1~10mm大小的椭圆,或是相当于上述圆直径大小的多角形。
另外,贯通孔C的形状,还可以是具有一定宽度的线段(例如,由直线或曲线构成的狭缝)。
进而也可以是组合上述多种图形的几何学形状的贯通孔。
另外,这些贯通孔C,例如是用冲床等将用冷轧法制成的薄板冲压形成规定形状的。当形成2个以上的贯通孔时,这些贯通孔的排列,最好被配置成格状、交错排列等几何学排列,贯通孔相互的间距可以根据所需要的安全阀用部件的大小选择适当的尺寸。
形成这些贯通孔的方法,并没有特别限定,可以使用冲床或蚀刻等通常的穿孔方法形成。
另外,也可以在金属板的两面上冷压接金属箔,即使在容器内部的压力上升以外的力作用下(例如落地等的冲击)金属基板的一面的金属箔破裂,假如另一面的金属箔没有破裂,仍可以确保作为安全阀的功能。
安全阀片D,通常可以使用焊接等方法来安装,以封闭设置在电池用容器的一部分上的孔,例如安装得封闭设置在容器的盖子E上的孔F(参照图5)。
另外,也可以在金属板上设置贯通孔,在压接金属箔后,直接形成于电池用容器的盖上使用。
其次,金属箔B和设置有贯通孔的金属基板A,可以根据例如日本特开平1-224184号公报所揭示的方法,在真空中冷压接。
在图2以及图3中,展示了冷轧压接金属箔20B和金属基板20A制造复合材19的装置的一部分截面图。在图2以及图3中,从开卷滚筒3A、3B开卷的金属基板20A以及金属箔20B,其一部分被分别卷绕在向射刻箱22内突出的电极滚轮6A、6B上,在蚀刻室22内被溅射处理而活性化。其后,被设置在真空槽1内的轧辊装置2压延,并被冷压接,而后作为复合材19被卷绕在卷绕滚轮5上。在轧辊装置2中设置有用于压下滚轮的压下装置18。真空槽1由大型排气泵9保持在10-3~10-6Torr。数量级的真空度。
在复合材19的制造中,作为使金属箔20B、金属基板20A活性化的方法,采用磁控管溅射法,作为溅射电源使用1~50MHz频率的高频电源。在频率不足1MHz时,难以维持稳定的辉光放电,不能连续地蚀刻。另一方面,如果频率高于50MHz,则容易产生振荡,电力供给系统的装置变得复杂,不理想。
在开始蚀刻时,在预先由排气泵25使蚀刻室内保持在1×10-4Torr。以下后,导入氩气,设置成10-1~10-4Torr。数量级的氩气氛围,如果在和真空槽1之间通高频电,则在室内发生等离子体,金属箔20B以及金属基板20A的表面被蚀刻。当氩气的压力在1×10-4Torr。以下时,在难以使辉光放电稳定的同时,不能得到高离子流,很难进行高速蚀刻。
另一方面,如果氩气的压力超过1×10-1Torr,则被溅射的原子的平均自由程减小,再次被打入目标上的频度增高,因为由蚀刻而从形成在金属箔以及金属基板的表面上的氧化物中脱离出的氧再次被打入目标,所以表面活性化处理的效率降低。因此蚀刻室22内的氩气的压力设置在10-1~10-4Torr。范围内。
在用于复合材19的制造的磁控管溅射法中,由于可以得到1000埃/分以上的蚀刻速度,因此即使是在铝、钛等中稳定且厚的氧化膜,也可以在数分钟的蚀刻中完全除去。在铜、钢、不锈钢、非晶形金属等中,通过数分钟的蚀刻,基本上可以得到清洁的表面。
真空槽1内的真空度的降低肯定导致连接强度的降低,但在考虑到工业经济性时,下限为1×10-6Torr。上限到1×10-3Torr。就可以得到充分高的连接强度。
另外,在复合材的制造中,在冷压接时不需要加热金属箔20B和金属基板20A,在冷压接时的压延啮入时的板温度T在常温下即可。但是,在根据需要使因压接时产生的热引起的不同金属的热膨胀率的差,和伴随其冷却后的变形小等时,加热金属箔20B、金属基板20A的情况下,上限只要不在使连接强度降低的再结晶退火,或产生合金层、碳化物等的范围内即可,理想的是300℃以下。
冷压接金属箔20B以及金属基板20A时的压延率,理想状态是在0.1~30%的范围内。即,在设置了
T1:金属箔压接前的厚度,
T2:金属基板压接前的厚度,
TA:冷压接后的复合材的厚度,
R:压延率(%)的情况下,为
R=(T1+T2+TA)×100/(T1+T2),
在R为0.1≤R≤30的范围内压延。
在此,压延率的下限由以下因素确定。即,虽然板的表面看起来平坦,但由于在微观上存在凹凸,因此在非加压状态下金属之间的接触面积非常少,在以往的冷轧压接法中,即使表面被充分活性化也不能得到强力的连接。因此,在以往的冷轧压接法中,通过高压延率的冷压延,使表面的氧化膜塑性流动,形成部分活性化的表面,与此同时,由于通过扩大接触面积来连接,因此不需要金属表面必须平坦。即,通过在高压延率下轧制预先把表面加工得稍微粗的金属基板,使得在更平坦下连接。
另一方面,在复合材19的制造中清洁金属箔20B以及金属基板20A的表面时,一般认为:由于在金属表面未形成新的凹凸,可以在保持压接前的精轧时的表面的平坦性下进行压接,所以即使施加小的压力也可以有大的接触面积,并且由于接触部分金属确实结合,所以即使是低的压延率也可以得到大的连接强度。
另外,压延率的上限在一次压延工序中实施冷压接和精轧、或者调质压延时被设置为30%,但当超过30%时,加工硬化显著,不理想。进而,在金属箔和金属基板的冷压接中,也可以代替压延滚筒,使用在一侧或两侧采用了平坦的台的压力机等的加工机械。
以下,列举最佳的实施例进一步说明本发明。
(实施例1)
在厚度90μm的冷轧钢板(金属板)上,使用冲床以间距3mm的格状排列设置直径3mm的圆形孔。在该孔板的两面,用通常的光电镀镍电镀液镀厚度2μm的镍,作为金属基板。
将该金属基板和厚度30μm的铝箔插入真空槽,在5×10-3Torr。的氩气中,采用磁控管溅射法在金属基板的一面上蚀刻约500埃,在铝箔的一面上蚀刻约2000埃后,将两者的被蚀刻面重合,在120℃的温度下按照3%的压延率压延,进行冷压接,制成复合材。从得到的复合材中使用冲床,冲出长边10.5mm,短边7.5mm,在中心穿设有1个直径3mm的圆形孔的安全阀用片。
使用空气压缩机从其一端送入压缩空气,并用激光束将这些安全阀用片进行了密封焊接以封闭设置在能够加压的钢板制压力容器上的贯通孔。
而后,使上述钢板制压力容器的一端通过压力计与空气压缩机连接,向钢板制的压力容器内部加压,在内部压力达到14kgf/cm2时,安全阀用片的铝箔破裂。
其后,同样地制造几个安全阀用片,测定铝箔破裂的压力,其结果,安全阀用构件铝箔都是在如12~18kgf/cm2这一狭小而稳定的压力范围内破裂的。
(实施例2)
在厚度60μm的不锈钢板上,用冲床以孔距10.5mm的格状排列设置直径3mm的圆形孔。
将该不锈钢的冷轧孔板,和厚度10μm的镍箔插入真空槽,在1×10-2Torr。的氩气中,在用磁控管溅射法将不锈钢冷轧孔板的一面和镍箔的一面蚀刻约500埃后,使两者的被蚀刻面重合,在室温下以0.5%的压延率压延,进行冷压接,制成复合材。
用冲床从得到的复合材中取出7个长边10.5mm、短边7.5mm,在其中心穿设有1个圆形孔的安全阀用片。在将这些安全阀用片和实施例1同样地密封焊接在钢板制压力容器上后,和实施例1同样地向钢板制压力容器内部加压,其结果,7个安全阀用片,其镍箔都在13~17kgf/cm2这一狭小而稳定的压力范围内破裂。
(实施例3)
在设置有排列成孔距10.5mm的交错形的直径3mm的圆孔的厚度90μm的冷轧钢板(金属基板)的两面上,和实施例1一样镀厚度2μm的镍。
将该镀镍钢制孔板和厚度10μm的铜箔插入真空槽,在2×10-3Torr。的氩气中用磁控管溅射法,分别将镀镍钢制孔板的一面和铜箔的一面蚀刻约500埃后,将两者的被蚀刻面重叠,在一定温度下,以0.3%压延率压延,进行冷压接,制成复合材。从得到的复合材中用冲床取出7个直径10.5mm,在其中心有1个贯通孔的安全阀用片。
在将这些安全阀用片与实施例1一样密封焊接在钢板制压力容器上后,与实施例1一样向钢板制压力容器内部加压,其结果,安全阀片的铜箔分别在10~15kgf/cm2这一稳定的压力范围内破裂。
(比较例3-高温加热压接法)
在镀镍钢板上,用冲床设置和实施例3同样的圆孔,并和实施例3一样排列成交错状。使该镀镍钢板,和与实施例3同样的镍箔重叠,在真空炉中边加压边在1000℃下热压合。从得到的积层板中与实施例3一样,取出7个在其中心上穿设有圆孔的安全阀用片。在将这些安全阀用片和实施例1同样地密封焊接在钢板制压力容器上后,和实施例1一样向钢板制压力容器内部加压,安全阀的镍箔在4~12kgf/cm2这一宽的压力范围内破裂。
产业上的利用可能性
本发明的复合材,在作为安全阀使用时,特别在低压下,可以以良好的精度在规定的压力下破裂而释放内压,并且可以一次制造大量的安全阀用片。
Claims (4)
1.一种复合材,由穿有多个贯通孔的金属板,和层叠在上述金属板上以封闭贯通孔的金属箔构成。
2.一种复合材,干腐蚀穿有多个贯通孔的金属基板或者金属箔的至少一面,而后其蚀刻面相互作为内侧面被层叠。
3.一种复合材,在金属板上形成多个贯通孔,干腐蚀其金属板的一面,其蚀刻面作为内侧面与金属箔层叠。
4.权利要求1~3的任一所述的复合材,上述金属基板或者金属板是镀镍的板。
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CN100372152C (zh) * | 2004-12-28 | 2008-02-27 | 北京有色金属研究总院 | 电池用温度控制安全器件及其制备方法和安装安全器件的电池 |
WO2018137297A1 (zh) * | 2017-01-25 | 2018-08-02 | 华为技术有限公司 | 复合板材盲孔加工方法、复合板材及壳体 |
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KR101125573B1 (ko) * | 2008-10-23 | 2012-03-23 | 한국생산기술연구원 | 표면 활성화 접합법을 이용한 극박-금속 정밀층상복합소재 제조 장치 |
KR101307141B1 (ko) * | 2011-10-19 | 2013-09-10 | 한국산업기술대학교산학협력단 | 고열전도 클래드 메탈 제조방법 |
KR101274377B1 (ko) * | 2011-10-19 | 2013-06-17 | 한국산업기술대학교산학협력단 | 고방열 클래드 메탈 제조 방법 |
JP5201376B1 (ja) * | 2012-03-13 | 2013-06-05 | 新神戸電機株式会社 | エキスパンド格子用鉛合金シートの製造方法及びその鉛合金シートを用いる鉛蓄電池用エキスパンド格子の製造方法 |
WO2016057941A1 (en) | 2014-10-09 | 2016-04-14 | Materion Corporation | Metal laminate with metallurgical bonds and reduced-density metal core layer and method for making the same |
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JP2019214138A (ja) * | 2018-06-11 | 2019-12-19 | 日鉄ステンレス株式会社 | 複層ステンレス鋼箔 |
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-
1997
- 1997-02-14 US US09/117,854 patent/US6150037A/en not_active Expired - Fee Related
- 1997-02-14 TW TW086101687A patent/TW355162B/zh active
- 1997-02-14 JP JP52919197A patent/JP3432520B2/ja not_active Expired - Fee Related
- 1997-02-14 KR KR1019980706333A patent/KR100300383B1/ko not_active IP Right Cessation
- 1997-02-14 DE DE1997615600 patent/DE69715600T2/de not_active Expired - Fee Related
- 1997-02-14 CN CNB97192273XA patent/CN1148814C/zh not_active Expired - Fee Related
- 1997-02-14 CA CA 2246571 patent/CA2246571C/en not_active Expired - Fee Related
- 1997-02-14 EP EP19970902680 patent/EP0881697B1/en not_active Expired - Lifetime
- 1997-02-14 WO PCT/JP1997/000389 patent/WO1997030483A1/ja active IP Right Grant
- 1997-02-14 AU AU16722/97A patent/AU1672297A/en not_active Abandoned
- 1997-02-14 MY MYPI97000534A patent/MY118038A/en unknown
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1999
- 1999-09-17 HK HK99104017A patent/HK1018985A1/xx not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100372152C (zh) * | 2004-12-28 | 2008-02-27 | 北京有色金属研究总院 | 电池用温度控制安全器件及其制备方法和安装安全器件的电池 |
WO2018137297A1 (zh) * | 2017-01-25 | 2018-08-02 | 华为技术有限公司 | 复合板材盲孔加工方法、复合板材及壳体 |
CN110191798A (zh) * | 2017-01-25 | 2019-08-30 | 华为技术有限公司 | 复合板材盲孔加工方法、复合板材及壳体 |
CN110875443A (zh) * | 2018-08-31 | 2020-03-10 | 宁德时代新能源科技股份有限公司 | 防护组件、封盖以及箱体 |
US11228073B2 (en) | 2018-08-31 | 2022-01-18 | Contemporary Amperex Technology Co., Limited | Protection assembly, cover and housing |
Also Published As
Publication number | Publication date |
---|---|
WO1997030483A1 (en) | 1997-08-21 |
CA2246571A1 (en) | 1997-08-21 |
EP0881697A4 (en) | 2000-02-02 |
TW355162B (en) | 1999-04-01 |
KR100300383B1 (ko) | 2002-06-20 |
EP0881697A1 (en) | 1998-12-02 |
MY118038A (en) | 2004-08-30 |
CA2246571C (en) | 2004-03-16 |
CN1148814C (zh) | 2004-05-05 |
EP0881697B1 (en) | 2002-09-18 |
HK1018985A1 (en) | 2000-01-14 |
US6150037A (en) | 2000-11-21 |
JP3432520B2 (ja) | 2003-08-04 |
DE69715600D1 (de) | 2002-10-24 |
AU1672297A (en) | 1997-09-02 |
DE69715600T2 (de) | 2003-05-28 |
KR19990082595A (ko) | 1999-11-25 |
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