To solve such problems that when an electrochemical cell having polarity in an electrode is reversely mounted on a circuit, corrosion is generated on the inside, and soldering strength between the electrochemical cell and a circuit board is weak.
The electrochemical cell has a pair of positive terminals formed in the corners on the same diagonal and a pair of negative terminals formed in the corners on the different diagonal. Since a positive connection terminal and a negative connection terminal are arranged in the symmetrical positions, even when the electrochemical cell is mounted on the circuit board on the 180° opposite, the polarity is made constant. Therefore, a welded part is always positioned on the negative electrode side, and corrosion on the inside of the electrochemical cell can be prevented.
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Kida Kikohiko
Kensuke Tahara
Shunji Watanabe
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Noriaki Uchino
Nobuyuki Kimura