BATTERY DEVICE
First Claim
1. A battery device, comprising:
- a secondary battery; and
a first charge/discharge control device and a second charge/discharge control device that are parallel to each other, and are connected to the secondary battery,the first charge/discharge control device being configured to monitor a charge/discharge current with a voltage generated across both ends of a charge/discharge control switch,the second charge/discharge control device being configured to monitor the charge/discharge current with a voltage generated across both ends of a current sensing resistor.
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0 Petitions
Accused Products
Abstract
Provided is a battery device having high overcurrent detection current accuracy that suppresses increases in a resistance value of a charge/discharge path and in a manufacturing cost. A first charge/discharge control device is configured to monitor a charge/discharge current with a voltage generated across both ends of a charge/discharge control switch, and a second charge/discharge control device is configured to monitor the charge/discharge current with a voltage generated across both ends of a current sensing resistor. A field effect transistor forming the charge/discharge control switch is selected based on a desired ON resistance value. The charge/discharge control switch of the first charge/discharge control device includes a field effect transistor having the desired ON resistance value, and a charge/discharge control switch of the second charge/discharge control device includes a field effect transistor having an ON resistance value other than the desired ON resistance value.
10 Citations
2 Claims
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1. A battery device, comprising:
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a secondary battery; and a first charge/discharge control device and a second charge/discharge control device that are parallel to each other, and are connected to the secondary battery, the first charge/discharge control device being configured to monitor a charge/discharge current with a voltage generated across both ends of a charge/discharge control switch, the second charge/discharge control device being configured to monitor the charge/discharge current with a voltage generated across both ends of a current sensing resistor. - View Dependent Claims (2)
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Specification