SECONDARY BATTERY; SOLAR POWER GENERATION SYSTEM, WIND POWER GENERATION SYSTEM, AND VEHICLE PROVIDED THERWITH; AND METHOD FOR FABRICATION OF A SECONDARY BATTERY
First Claim
1. A secondary battery comprising:
- an electrode assembly including a positive electrode and a negative electrode disposed to face the positive electrode;
a package container in which the electrode assembly is sealed along with electrolyte liquid; and
an elevated portion provided on the package container to project toward the electrode assembly, the elevated portion having, on the side thereof opposite from the projecting side thereof, a cavity portion in which refill electrolyte liquid is stored, whereinthe package container includes a housing container in which the electrode assembly is housed and a lid member which seals the housing container,the elevated portion includes a leaking portion letting the refill electrolyte liquid stored in the cavity portion leak toward the electrode assembly, andthe elevated portion is formed on at least one of the lid member and the largest of the faces constituting the housing container.
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Accused Products
Abstract
A secondary battery with improved life characteristics is provided. The secondary battery (lithium-ion secondary battery) has: an electrode assembly including positive electrodes and negative electrodes; and a package container for housing the electrode assembly along with non-aqueous electrolyte liquid. The package container includes a package can for housing the electrode assembly and a sealing plate sealing the opening of the package can. On the sealing plate, an elevated portion is formed that projects toward the electrode assembly and has, on the side opposite from the electrode assembly, a cavity portion for storing refill non-aqueous electrolyte liquid. The elevated portion has a hole for feeding the refill non-aqueous electrolyte liquid stored in the cavity portion toward the electrode assembly. The hole is sealed with a sealing stopper formed of a resin material letting the refill non-aqueous electrolyte liquid leak toward the electrode assembly.
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Citations
35 Claims
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1. A secondary battery comprising:
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an electrode assembly including a positive electrode and a negative electrode disposed to face the positive electrode; a package container in which the electrode assembly is sealed along with electrolyte liquid; and an elevated portion provided on the package container to project toward the electrode assembly, the elevated portion having, on the side thereof opposite from the projecting side thereof, a cavity portion in which refill electrolyte liquid is stored, wherein the package container includes a housing container in which the electrode assembly is housed and a lid member which seals the housing container, the elevated portion includes a leaking portion letting the refill electrolyte liquid stored in the cavity portion leak toward the electrode assembly, and the elevated portion is formed on at least one of the lid member and the largest of the faces constituting the housing container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A secondary battery comprising:
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a battery portion having a positive electrode, a negative electrode, and a separator and filled with non-aqueous electrolyte liquid; a non-aqueous electrolyte liquid storage portion in which refill non-aqueous electrolyte liquid is stored; a package member in which the battery portion and the non-aqueous electrolyte liquid storage portion are housed; a partition wall disposed inside the package member, between the battery portion and the non-aqueous electrolyte liquid storage portion; and a seeping portion provided on the partition wall and letting the refill non-aqueous electrolyte liquid seep out from the non-aqueous electrolyte liquid storage portion into the battery portion. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for fabrication of a secondary battery, comprising:
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a step of welding a non-aqueous electrolyte liquid container having at least one opening to a lid portion; a step of filling the non-aqueous electrolyte liquid container with refill non-aqueous electrolyte liquid; a step of joining the lid portion having the opening sealed with a sealing stopper to a package member in which an electric power storage element having a negative electrode, a positive electrode, and a separator is housed; a step of filling non-aqueous electrolyte liquid through a filling hole in the lid portion or the package member; and a step of sealing the filling hole to achieve air-tightness.
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35. A method for fabrication of a secondary battery, comprising:
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a step of housing in a package member an electric power storage element having negative and positive electrodes stacked or wound with a separator therebetween; a step of fitting inside the package member a partition wall plate having an opening previously formed therein or a partition wall plate having a cut part serving as an opening; a step of filling non-aqueous electrolyte liquid through the opening; a step of sealing the opening with a sealing stopper, joining the lid portion, and filling refill non-aqueous electrolyte liquid through a filling hole in the lid portion or the package member; and a step of sealing the filling hole in the lid portion or the package member.
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Specification