Method for manufacturing a battery pack
First Claim
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1. A method for manufacturing a battery pack, comprising:
- providing a rechargeable battery having a sealing plate on a sealing plate side and a bottom face;
connecting a circuit substrate having an external terminal to the rechargeable battery by a connecting member;
said circuit substrate having a first substrate side surface on which said external terminal is disposed and having a second substrate side surface opposite said first substrate side surface;
arranging the circuit substrate such that said second substrate side surface of the circuit substrate faces the sealing plate of the rechargeable battery and defines a gap therebetween thereby forming an object to be resin packed;
placing the object to be resin packed inside a die such that the rechargeable battery and the circuit substrate are in predetermined positions;
filling the gap between the rechargeable battery and the circuit substrate with resin thereby forming an intermediate product by integrally uniting the rechargeable battery and the circuit substrate; and
forming an outer covering such that at least the external terminal of the intermediate product is exposed to the outside.
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Abstract
A rechargeable battery (2) and a circuit substrate (3) are connected by lead plates (4, 5) and united by a primary mold (11) that is formed by filling resin therebetween, after which a secondary mold (12) is formed on the outer face by filling resin at necessary locations and a winding sheet (13) is wound around the periphery, thereby forming a battery pack.
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Citations
11 Claims
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1. A method for manufacturing a battery pack, comprising:
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providing a rechargeable battery having a sealing plate on a sealing plate side and a bottom face; connecting a circuit substrate having an external terminal to the rechargeable battery by a connecting member; said circuit substrate having a first substrate side surface on which said external terminal is disposed and having a second substrate side surface opposite said first substrate side surface; arranging the circuit substrate such that said second substrate side surface of the circuit substrate faces the sealing plate of the rechargeable battery and defines a gap therebetween thereby forming an object to be resin packed; placing the object to be resin packed inside a die such that the rechargeable battery and the circuit substrate are in predetermined positions; filling the gap between the rechargeable battery and the circuit substrate with resin thereby forming an intermediate product by integrally uniting the rechargeable battery and the circuit substrate; and forming an outer covering such that at least the external terminal of the intermediate product is exposed to the outside. - View Dependent Claims (2, 3, 8, 9, 10, 11)
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4. A method for manufacturing a battery pack comprising:
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providing a flat prismatic rechargeable battery having a sealing plate on a sealing plate side and a bottom face; connecting a circuit substrate having an external terminal to the flat prismatic rechargeable battery on the sealing plate side thereof by a connecting member; said circuit substrate having a first substrate side surface on which said external terminal is disposed and having a second substrate side surface opposite said first substrate side surface; arranging the circuit substrate so that the said second substrate side surface of the circuit substrate faces the sealing plate of the rechargeable battery and defines a gap therebetween thereby forming an object to be resin packed; placing the object to be resin packed inside a die such that a bias is applied thereto so that either one of the sealing plate side and the bottom face of the rechargeable battery abuts on a first wall of the die that defines position of the battery; arranging the circuit substrate by vacuum suction on a second wall of the die that defines a position of the substrate and is parallel to the first wall that defines the position of the battery; filling the gap between the rechargeable battery and the circuit substrate with resin to form an intermediate product by integrally uniting the rechargeable battery and the circuit substrate; and forming an outer covering such that at least the external terminal of the intermediate product is exposed to the outside.
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5. A method for manufacturing a battery pack comprising:
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providing a flat prismatic rechargeable battery having a sealing plate on a sealing plate side and a bottom face; connecting a circuit substrate having an external terminal to the flat prismatic rechargeable battery on the sealing plate side thereof by a connecting member; said circuit substrate having a first substrate side surface on which said external terminal is disposed and having a second substrate side surface opposite said first substrate side surface; arranging the circuit substrate so that the second substrate side of the circuit substrate faces the sealing plate of the rechargeable battery and defines with a gap therebetween thereby forming an object to be resin packed; placing the object to be resin packed inside a die such that a bias is applied thereto so that either one of the sealing plate and the bottom face of the rechargeable battery abuts on a first wall of the die that defines the position of the battery; arranging the circuit substrate such that a bias is applied so that both ends of the circuit substrate abut on a second wall of the die that defines the position of the substrate and is parallel to the first wall that defines the position of the battery; filling the gap between the rechargeable battery and the circuit substrate with resin to form an intermediate product by integrally uniting the rechargeable battery and the circuit substrate; and forming an outer covering such that at least the external terminal of the intermediate product is exposed to the outside.
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6. A method for manufacturing a battery pack comprising:
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providing a flat prismatic rechargeable battery having a sealing plate on a sealing plate side and a bottom face; connecting a circuit substrate having an external terminal to the flat prismatic rechargeable battery on the sealing plate side thereof by a connecting member; said circuit substrate having a first substrate side surface on which said external terminal is disposed and having a second substrate side surface opposite said first substrate side surface; arranging the circuit substrate so that the second substrate side of the circuit substrate faces the sealing plate of the rechargeable battery and defines a gap therebetween thereby forming an object to be resin packed; placing the object to be resin packed inside a die such that a bias is applied so that either one of the sealing plate side and the bottom face of the rechargeable battery abuts on a wall of the die that defines the position of the battery; arranging the circuit substrate such that one edge of the circuit substrate fits in a groove that defines a position of the substrate and is formed parallel to the wall that defines the position of the battery; filling a gap between the rechargeable battery and the circuit substrate with resin to form an intermediate product by integrally uniting the rechargeable battery and the circuit substrate; and forming an outer covering such that at least the external terminal of the intermediate product is exposed to the outside.
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7. A method for manufacturing a battery pack comprising:
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providing a flat prismatic rechargeable battery having a sealing plate on a sealing plate side and a bottom face; arranging a circuit substrate having an external terminal on a sealing plate side of the flat prismatic rechargeable battery to define a gap therebetween; said circuit substrate having a first substrate side surface on which said external terminal is disposed and having a second substrate side surface opposite said first substrate side surface; connecting the circuit substrate to the rechargeable battery by a resilient connecting member that biases the circuit substrate in a direction away from the rechargeable battery to form an object to be resin packed; placing the object to be resin packed inside a die against the biasing force of the connecting member, the die having an inner space that restricts a dimension from the bottom face of the rechargeable battery to the first substrate side surface of the circuit substrate where the external terminal is formed; filling a gap between the rechargeable battery and the circuit substrate with resin for forming an intermediate product by integrally uniting the rechargeable battery and the circuit substrate; and forming an outer covering such that at least the external terminal of the intermediate product are exposed to the outside.
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Specification