US 2013/0093398 A1Published application

Battery, method of manufacturing battery, battery pack, electronic device, electric vehicle, capacitive storage device, and power system

AssigneeSony Corporation

InventorsHiroshi Takabayashi, Tetsuya Makino, Akira Sasaki, Koji Shimotoku

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Abstract

A battery including cladding members in which a metal layer, an external resin layer, an inner resin are laminated; an electrode body which includes a positive electrode and a negative electrode; electrolyte which is accommodated in the cladding member; a positive electrode lead which is electrically connected to the positive electrode; and a negative electrode lead which is electrically connected to the negative electrode, the thickness of the heat sealed portions of both end portions of the positive electrode lead is formed larger than the thickness of the heat sealed portion on a center line in a width direction of the positive electrode lead, and the thickness of the heat sealed portions of both end portions of the negative electrode lead is formed larger than the thickness of the heat sealed portion on a center line in a width direction of the negative electrode lead.

Claims20

Dependent claims

A battery comprising:

a cladding member in which a metal layer, an external resin layer formed on an outer surface of the metal layer, an inner resin layer formed on an inner surface of the metal layer are laminated;
an electrode body which includes a positive electrode and a negative electrode which are accommodated in the cladding member;
electrolyte which is accommodated in the cladding member;
a positive electrode lead which is electrically connected to the positive electrode and is derived from the heat sealed joint of the cladding member to outside;
and
a negative electrode lead which is electrically connected to the negative electrode, and is derived from the heat sealed joint of the cladding member to outside,
wherein in a heat sealed portion where the positive electrode lead and the negative electrode lead are derived to outside and the cladding members are heat-sealed to each other, the thickness of the heat sealed portions of both end portions of the positive electrode lead is formed larger than the thickness of the heat sealed portion on a center line in a width direction of the positive electrode lead, and the thickness of the heat sealed portions of both end portions of the negative electrode lead is formed larger than the thickness of the heat sealed portion on a center line in a width direction of the negative electrode lead.

4 more elements

A manufacturing method of a battery comprising:

cladding an electrode body and electrolyte including a positive electrode and a negative electrode using a cladding member which is formed by laminating a metal layer, an external resin layer formed on an outer surface of the metal layer, and an internal resin layer formed on an inner surface of the metal layer, and accommodates the electrode body and the electrolyte in an inner portion using heat-sealing;
deriving a positive electrode lead which is electrically connected to the positive electrode and a negative electrode lead that is electrically connected to the negative electrode from a joint of the cladding member to outside;
heat-sealing the cladding member of, among an outer periphery portion of the electrode body, a derivation side which derives the positive electrode lead or the negative electrode lead using a heater block which is provided with a positive electrode side cutout portion which is formed from a pair of first cutout portions which are respectively provided in a portion opposite the positive electrode and a portion opposite a region which straddles end portions of the positive electrode, and a second cutout portion including a center line of the positive electrode lead between the pair of first cutout portions and formed shallower than the first cutout portions, and is provided with a negative electrode side cutout portion which is formed from a pair of third cutout portions which are respectively provided in a portion opposite the negative electrode lead and a portion opposite a region which straddles end portions of the negative electrode lead, and a fourth cutout portion including a center line of the negative electrode lead between the pair of third cutout portions and formed shallower than the third cutout portions;
and
heat-sealing a joint of, among an outer periphery portion of the electrode body, the cladding member of a side which does not derive the positive electrode lead and the negative electrode lead.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/649,390Filed 11 Oct 2012
Priority: JP 2011-22828017 Oct 2011
Published: 18 Apr 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification40 codes

B60L 50/64
Using power supplied by batteries: constructional details of batteries specially adapted for electric vehicles
B29C 65/18
By heating, with or without pressure: using heated tools
B29C 66/112
Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint…: single…
B29C 66/131
Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of…:…

Family

US 9,159,962 B2Related patent
US 2013/0093398 A1This patent

From the US filing history. Foreign family members aren’t listed.

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