摘要:
A sealed battery including an electrode assembly 11 having multiple positive electrode substrates exposed at one end and negative electrode substrates exposed at the other end; and collectors 18 and collector receiving parts 19 that are resistance-welded on both sides of the multiple positive or the multiple negative electrode substrates or both, a through-hole 30 being formed in at least one of the collectors 18 and the collector receiving parts 19, and the resistance welding being performed at the rim of the through-hole 30. With such sealed battery, the spattered particles 26 generated during the resistance welding are captured in the through-hole 30, and will rarely enter the interior of the electrode assembly 11 or splash out to the exterior.
摘要:
The sealed battery of the present invention includes: an electrode assembly 11 having multiple positive electrode substrates exposed at one end and negative electrode substrates exposed at the other end; and collectors 18 and collector receiving parts 19 that are resistance-welded on both sides of the multiple positive or the multiple negative electrode substrates or both, a through-hole 30 being formed in at least one of the collectors 18 and the collector receiving parts 19, and the resistance welding being performed at the rim of the through-hole 30. With such sealed battery, the spattered particles 26 generated during the resistance welding are captured in the through-hole 30, and will rarely enter the interior of the electrode assembly 11 or splash out to the exterior.
摘要:
The present invention's manufacturing method for a sealed battery includes: a process whereby a sealed battery application electrode assembly 11 is formed that has multiple positive electrode substrate exposed portions 14 at one end and multiple negative electrode substrate exposed portions 15 at the other end; a process whereby the negative electrode collector 181 and negative electrode collector receiving part 183 are brought against both surfaces of the part to be welded on at least the negative electrode substrate exposed portions 15, with tape 23a constituted of thermodeposited resin and having an opening 231 in the center being interposed; and a process whereby resistance welding is effected by passing current between the negative electrode collector 181 and negative electrode collector receiving part 183 positioned at the two sides.
摘要:
An object of the present invention is to provide a high-output prismatic secondary cell that excels in current collecting efficiency and provides for reliable and highly productive welding with a lower welding current at the time of resistive welding of a current collecting plate onto a core exposed portion of a flat electrode assembly having at both ends a positive electrode core and a negative electrode core. This object is realized by a prismatic secondary cell including: a flat electrode assembly comprising a plurality of first electrode cores and a plurality of second electrode cores, the first electrode cores protruding from one end of the flat electrode assembly while being directly laminated on top of each other, the second electrode cores protruding from another end of the flat electrode assembly while being directly laminated on top of each other; and a first current collecting plate arranged in a first electrode core collected area where the mutually directly laminated first electrode cores protrude, the first current collecting plate being resistive-welded on one plane parallel to a plane on which the first electrode cores are laminated. A first electrode core melt-attached portion where the mutually directly laminated first electrode cores are melt-attached is formed in an area distanced from the area in which the first current collecting plate is attached.
摘要:
The present invention's manufacturing method for a sealed battery includes: a process whereby a sealed battery application electrode assembly 11 is formed that has multiple positive electrode substrate exposed portions 14 at one end and multiple negative electrode substrate exposed portions 15 at the other end; a process whereby the negative electrode collector 181 and negative electrode collector receiving part 183 are brought against both surfaces of the part to be welded on at least the negative electrode substrate exposed portions 15, with tape 23a constituted of thermodeposited resin and having an opening 231 in the center being interposed; and a process whereby resistance welding is effected by passing current between the negative electrode collector 181 and negative electrode collector receiving part 183 positioned at the two sides.
摘要:
By combining crimping fixing and laser welding, a collector attached to a substrate of an electrode assembly is fixed to a terminal. A negative electrode terminal 19A has a terminal portion formed on one side of a flange portion, and a cylindrical crimping member 19b on the other side. The cylindrical crimping member 19b is inserted through openings formed in a first insulating member, a sealing plate, a second insulating member, and a negative electrode collector 18a. The cylindrical crimping member 19b is crimped in a diameter-increasing direction, and is mechanically fixed in a countersunk hole 18c of the negative electrode collector 18a. A peripheral portion of a thin-walled portion 19d having a thickness smaller than those of other portions formed at the tip end portion of the cylindrical crimping member 19b is thoroughly adhered and welded by a high energy beam to the edge of the countersunk hole 18c.
摘要:
By combining crimping fixing and laser welding, a collector attached to a substrate of an electrode assembly is fixed to a terminal. A negative electrode terminal 19A has a terminal portion formed on one side of a flange portion, and a cylindrical crimping member 19b on the other side. The cylindrical crimping member 19b is inserted through openings formed in a first insulating member, a sealing plate, a second insulating member, and a negative electrode collector 18a. The cylindrical crimping member 19b is crimped in a diameter-increasing direction, and is mechanically fixed in a countersunk hole 18c of the negative electrode collector 18a. A peripheral portion of a thin-walled portion 19d having a thickness smaller than those of other portions formed at the tip end portion of the cylindrical crimping member 19b is thoroughly adhered and welded by a high energy beam to the edge of the countersunk hole 18c.
摘要:
By combining crimping fixing and laser welding, a collector attached to a substrate of an electrode assembly is fixed to a terminal. A negative electrode terminal 19A has a terminal portion formed on one side of a flange portion, and a cylindrical crimping member 19b on the other side. The cylindrical crimping member 19b is inserted through openings formed in a first insulating member, a sealing plate, a second insulating member, and a negative electrode collector 18a. The cylindrical crimping member 19b is crimped in a diameter-increasing direction, and is mechanically fixed in a countersunk hole 18c of the negative electrode collector 18a. A peripheral portion of a thin-walled portion 19d having a thickness smaller than those of other portions formed at the tip end portion of the cylindrical crimping member 19b is thoroughly adhered and welded by a high energy beam to the edge of the countersunk hole 18c.
摘要:
A sealed battery including: an electrode assembly 11 having multiple positive electrode substrates exposed at one end and negative electrode substrates exposed at the other end; and collectors 181 and collector receiving parts 183 that are resistance-welded on both sides of the multiple positive or the multiple negative electrode substrates or both, grooves 23 being formed around the resistance-welded portion of at least one of the collector 181 and the collector receiving part 183. Due to the spattered particles 26 generated during the resistance-welding being captured within the grooves 23, few particles burst into the inside of the electrode assembly 11 or into the outside.
摘要:
A sealed battery including: an electrode assembly 11 having multiple positive electrode substrates exposed at one end and negative electrode substrates exposed at the other end; and collectors 181 and collector receiving parts 183 that are resistance-welded on both sides of the multiple positive or the multiple negative electrode substrates or both, grooves 23 being formed around the resistance-welded portion of at least one of the collector 181 and the collector receiving part 183. Due to the spattered particles 26 generated during the resistance-welding being captured within the grooves 23, few particles burst into the inside of the electrode assembly 11 or into the outside.