Battery

Abstract

In order to provide a battery in which a molded section can be fixed to a battery cell, a battery comprises a battery cell, a circuit board which is attached to the battery cell, an electrode terminal which connects the battery cell and the circuit board electrically, a molded section which adheres the circuit board and the electrode terminal to the battery cell as an entire unit, adhesion strengthened areas which are formed between the electrode terminal and the battery, and electrode terminal inner surface resin sections which are formed in a part of the molded section of the adhesion strengthened area.

Description

technical field [0001] The present invention relates to batteries used in mobile terminals and the like, and more particularly to batteries having circuit boards. Background technique [0002] As batteries conventionally used in mobile terminals such as mobile phones, there are provided batteries in which various circuit boards such as an overcurrent protection circuit board are arranged in a battery unit. In general, the above-mentioned circuit board is encapsulated in the battery unit by molding resin for the convenience of use and neat appearance of this battery. [0003] Figure 4 ~ Figure 6 An example of the above-mentioned conventional battery is shown in the Figure 4 In , the symbol 1 denotes the battery cell, and the symbol 2 denotes the molding part. The battery cell 1 has a rectangular shape with a certain thickness, and its entirety is basically covered by an aluminum case 3 . [0004] Such as Figure 5 , Figure 6 As shown, a circuit board 5 is disposed on ...

AI Technical Summary

Problems solved by technology

[0009] However, in the above-mentioned battery, when the battery unit 1 is molded, there is a part of the joint strength between the battery unit 1 and the molded part 2 that is insufficient in bonding strength. The problem that a part of the battery is separated from the battery cell 1

[0010] That is, in the above-mentioned battery, since the electrode terminal 10 such as the lead-out portion 15 of the electrode terminal 10 is in contact with the first side surface 4, etc., is located at a position close to the first and second side surfaces 4, 11 of the battery cell 1. During molding, the resin cannot flow into between the electrode terminal 10 and the first and second side surfaces 4, 11. Therefore, there is an insufficient joint area of ​​the molded part 2 with respect to the first and second side surfaces 4, 11 of this part. The bonding strength of this part is not enough, so that the molded part 2 Figure 4 The part shown in the symbol 20 forms a problem of detachment

[0011] Moreover, in the above-mentioned battery, if the molded part 2 is detached from the battery unit 1, it cannot be provided to the market as a commodity, and it is not easy to disassemble and reuse from the perspective of cost balance, thus causing battery damage. Low manufacturing yield, resulting in huge economic losses

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