Electrical device and battery pack for preventing polarity reversal of battery
AssigneePanasonic Corporation
InventorsKoshi Takamura, Toshihiko Ichinose, Harunari Shimamura
Life of this patent
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Abstract
An electrical device comprises a positive electrode terminal for connection to the positive electrode of a battery, a negative electrode terminal for connection to the negative electrode of the battery, a load circuit receiving power from the positive and negative electrode terminals connected to the battery, a voltage detector detecting the voltage between the positive and negative electrode terminals, and a short circuiting portion for short-circuiting between the positive and negative electrode terminals when the voltage detected by the voltage detector becomes not larger than a particular preset voltage.
Claims13
An electrical device, comprising:
- a positive electrode terminal for connection to a positive electrode of a battery;
- a negative electrode terminal for connection to a negative electrode of the battery;
- a load circuit for receiving power from the positive and negative electrode terminals connected to the battery;
- a voltage detector for detecting a voltage between the positive electrode terminal and the negative electrode terminal;
- and
- a short circuiting portion for making a short circuit via a resistor between the positive electrode terminal and the negative electrode terminal such that the short circuiting portion makes an electric potential of the positive electrode terminal and an electric potential of the negative electrode terminal equal when the voltage detected by the voltage detector becomes not larger than a particular preset voltage.
A battery pack, comprising:
- a battery;
- a voltage detector for detecting an output voltage of the battery;
- a short circuiting portion for short-circuiting the battery via a resistor such that the short circuiting portion makes an electric potential of the positive electrode of the battery and an electric potential of the negative electrode of the battery equal when the voltage detected by the voltage detector is not larger than a particular preset voltage;
- and
- an externally outputting terminal for outputting an output power of the battery.
Dependencies are inferred from the claim text.