Abstract: A battery terminal includes a shaft portion and a flange portion. The battery terminal is made of a clad material in which at least a first metal layer and a second metal layer are bonded to each other. Each of the shaft portion and the flange portion includes the first metal layer on a first side in a shaft direction and the second metal layer on a second side in the shaft direction. The first metal layer in the shaft portion includes a protruding portion that further protrudes to the second side in the shaft direction with respect to a surface of the first metal layer on the second side in the shaft direction in the flange portion.

Abstract: A battery terminal is made of a clad material in which a first metal layer made of an Al-based alloy, a second metal layer made of a Cu-based alloy, and a third metal layer made of a Ni-based alloy are bonded to each other in a state where the first metal layer, the second metal layer, and the third metal layer are stacked in this order. The battery terminal includes a shaft portion and a flange portion that radially expands from the shaft portion, and has the third metal layer at least in an end of the shaft portion on a first side in a shaft direction in which the shaft portion extends.

Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.

Abstract: This cladding material for a battery collector consists of a cladding material having a two-layer structure formed by bonding a first layer arranged on a first surface and constituted of an Al-based alloy and a second layer arranged on a second surface and constituted of a Cu-based alloy to each other by rolling. The ratio of the thickness of the first layer to the total thickness of the first layer and the second layer is not more than 35%.

Abstract: The present invention relates to a lithium ion battery employed by connecting the positive electrode side to a negative electrode portion made of Cu or a Cu alloy by a bus bar made of Al or an Al alloy and provides a negative electrode terminal for a lithium ion battery capable of providing sufficient bonding strength between the negative electrode portion and the bus bar when the negative electrode portion and the bus bar are metallurgically bonded to each other by resistance welding or the like, for example. This negative electrode terminal for a lithium ion battery is made of a clad material having a first metal layer made of Al or an Al alloy and a second metal layer made of Cu or a Cu alloy bonded to each other through a reaction-suppressing layer suppressing a reaction therebetween.

Abstract: A lead material for a battery includes a metal plate made of single metal, in which the hardness of a central portion is lower than the hardness of a surface layer portion.

Abstract: A battery terminal is made of a clad material in which a first metal layer made of an Al-based alloy, a second metal layer made of a Cu-based alloy, and a third metal layer made of a Ni-based alloy are bonded to each other in a state where the first metal layer, the second metal layer, and the third metal layer are stacked in this order. The battery terminal includes a shaft portion and a flange portion that radially expands from the shaft portion, and has the third metal layer at least in an end of the shaft portion on a first side in a shaft direction in which the shaft portion extends.

Abstract: A negative electrode terminal for a battery in which a first metal layer and a second metal layer hardly separate from each other is provided by inhibiting an intermetallic compound from being formed between the first metal layer and the second metal layer. This negative electrode terminal (8) for a battery is composed of a clad material formed by bonding a first metal layer (80), made of Al, including a first region connected with a battery terminal connecting plate and an adjacent second region on the same surface side as the first region and a second metal layer (81), made of Ni, connected with battery negative electrodes, while the second metal layer is arranged to be stacked on the first metal layer in the second region of the first metal layer.

Abstract: A battery terminal includes an overlay clad plate material including at least a first metal layer made of Al or Al alloy and a second metal layer made of Cu or Cu alloy, formed by bonding at least the first metal layer and the second metal layer to each other in the thickness direction. Either the first metal layer or the second metal layer of the clad plate material is partially removed to form an exposure surface on which either the second metal layer or the first metal layer is exposed in the clad plate material.

Abstract: This clad material for a battery negative electrode lead material is constituted of a clad material of a three-layer structure including a first layer constituted of pure Ni, a second layer constituted of pure Cu and a third layer constituted of pure Ni. The thickness of a first diffusion layer formed between the first layer and the second layer and the thickness of a second diffusion layer formed between the second layer and the third layer are at least 0.5 ?m and not more than 3.5 ?m.

Abstract: This chassis (2) is made of a clad material in which a first layer (21) made of austenite stainless steel, a second layer (22) made of Cu or a Cu alloy, stacked on the first layer, and a third layer (23) made of austenite stainless steel, stacked on the side of the second layer opposite to the first layer are roll-bonded to each other, and the thickness of the second layer is at least 15% of the thickness of the clad material.

Abstract: A connection plate for battery terminals capable of inhibiting a first member and a second member from being detached from each other is provided. This bus bar 2 (connection plate for battery terminals) includes a first member (3) including a first hole (30) and an embedding hole (31), made of first metal and a second member (4) having a second hole (42), including a base (40) made of second metal, embedded in the embedding hole of the first member, while an intermetallic compound layer (5) containing at least one of the first metal and the second metal is formed on an interface between the embedding hole of the first member and the second member.

Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.

Abstract: A battery terminal includes a shaft portion and a flange portion. The battery terminal is made of a clad material in which at least a first metal layer and a second metal layer are bonded to each other. Each of the shaft portion and the flange portion includes the first metal layer on a first side in a shaft direction and the second metal layer on a second side in the shaft direction. The first metal layer in the shaft portion includes a protruding portion that further protrudes to the second side in the shaft direction with respect to a surface of the first metal layer on the second side in the shaft direction in the flange portion.

Abstract: An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an Al—Cu intermetallic compound layer. The copper layer satisfies Dcs?0.5×Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C2 in the copper layer that is about 0.5 ?m apart from the interface between the copper layer and the intermetallic compound layer. The intermetallic compound layer has an average thickness of about 0.5 ?m to about 10 ?m.

Abstract: This cladding material for a battery collector consists of a cladding material having a two-layer structure formed by bonding a first layer arranged on a first surface and constituted of an Al-based alloy and a second layer arranged on a second surface and constituted of a Cu-based alloy to each other by rolling. The ratio of the thickness of the first layer to the total thickness of the first layer and the second layer is not more than 35%.

Abstract: This chassis (2) is made of a clad material in which a first layer (21) made of austenite stainless steel, a second layer (22) made of Cu or a Cu alloy, stacked on the first layer, and a third layer (23) made of austenite stainless steel, stacked on the side of the second layer opposite to the first layer are roll-bonded to each other, and the thickness of the second layer is at least 15% of the thickness of the clad material.

Abstract: A negative-electrode terminal for a cell in which separation between a first metal layer and a second metal layer hardly takes place is provided by suppressing excess formation of an intermetallic compound on a bond interface between the first metal layer and the second metal layer. This negative-electrode terminal for a cell includes a clad portion formed by bonding a first metal layer made of Al or an Al alloy and a second metal layer containing Ni and Cu and consisting of one or a plurality of layers to each other. The first metal layer includes a connected region connected with a cell terminal connecting plate and a stacked region adjacent to the connected region on the side of the same surface, while the second metal layer is bonded to the first metal layer in the stacked region and configured to be connectable to cell negative electrodes of cells.

Abstract: A battery terminal includes an overlay clad plate material including at least a first metal layer made of Al or Al alloy and a second metal layer made of Cu or Cu alloy, formed by bonding at least the first metal layer and the second metal layer to each other in the thickness direction. Either the first metal layer or the second metal layer of the clad plate material is partially removed to form an exposure surface on which either the second metal layer or the first metal layer is exposed in the clad plate material.

Abstract: A clad plate includes an aluminum plate and a hard metal plate joined together at side end surfaces thereof. Side end surfaces of an aluminum plate and a hard metal plate are jointed together via a nickel layer by pressure welding. A ridge and a groove formed in the side end surface of the aluminum plate are respectively engaged and joined, via the nickel layer, to a groove and a ridge formed in the side end surface of the hard metal plate, and an end portion of the nickel layer extends beyond the rear end portion of the side end surface of the aluminum plate and is jointed to the plate surface of the aluminum plate with the end portion exposed thereon. The average width W of the exposed portion of the nickel layer exposed on the plate surface is preferably from about 0.2 mm to about 1.5 mm.