BATTERY STATE DETECTION APPARATUS AND METHOD FOR MANUFACTURING SAME
First Claim
1. A battery state detection device comprising:
- a circuit board that detects a current;
a casing with a board storage space formed therein, the board storage space storing the circuit board, the casing including an open mouth through which one side of the board storage space is opened; and
a lid part that closes the open mouth of the casing,a welded portion being formed along an edge portion of the open mouth, the welded portion being a portion in which the casing and the lid part are connected to each other by welding.
1 Assignment
0 Petitions
Accused Products
Abstract
A battery state detection device includes a casing (8) and a lid part (24). The casing (8) includes a board storage space (23) that stores a circuit board. The casing (8) includes an open mouth through which one side of the board storage space (23) is opened. The lid part (24) closes the open mouth of the casing (8). The lid part (24) is provided with a tapered surface (77). The casing (8) is provided with a contact portion (78) that can be in contact with the tapered surface (77). In a state where the tapered surface (77) and the contact portion (78) are in contact with each other, ultrasonic welding between the casing (8) and the lid part (24) is performed.
-
Citations
14 Claims
-
1. A battery state detection device comprising:
-
a circuit board that detects a current; a casing with a board storage space formed therein, the board storage space storing the circuit board, the casing including an open mouth through which one side of the board storage space is opened; and a lid part that closes the open mouth of the casing, a welded portion being formed along an edge portion of the open mouth, the welded portion being a portion in which the casing and the lid part are connected to each other by welding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for manufacturing a battery state detection device, the battery state detection device comprising:
-
a circuit board that detects a current; a casing with a board storage space formed therein, the board storage space storing the circuit board, the casing including an open mouth through which one side of the board storage space is opened; and a lid part that closes the open mouth of the casing, the method including a welding step of performing ultrasonic welding between the casing and the lid part in a state where a tapered surface provided in one of the casing and the lid part is in contact with a contact portion provided in the other of the casing and the lid part, the contact portion being brought into contact with the tapered surface. - View Dependent Claims (13, 14)
-
Specification