PULSE CHARGING APPARATUS
First Claim
1. A pulse charging apparatus comprising:
- a switch section that turns a charging current from a direct-current source on and off;
a current detection section that detects the charging current;
an averaging section that averages output of the current detection section;
a reference signal generation section that generates a reference signal;
a comparison section that compares output of the averaging section with the reference signal; and
a control section that controls the switch section based on output of the comparison section.
2 Assignments
0 Petitions
Accused Products
Abstract
A pulse charger perform fine control of a charging current according to a battery voltage. The pulse charger includes a switch that turns a charging current from an external power supply on and off. A current detector detects charging current using a current detection resistor. An averaging section averages the output of the current detector. A reference voltage generator generates a reference signal. A comparison section compares an output voltage from the averaging section with the reference signal. A controller controls the switch section based on the output of comparison section. The comparison section includes a comparator that has a hysteresis width. The comparison section outputs an inverse signal between reference voltage and the hysteresis width. The controller performs on/off control of the switch section based on an inverse signal from the comparator and sets an average value of the charging current to a target constant value.
-
Citations
6 Claims
-
1. A pulse charging apparatus comprising:
-
a switch section that turns a charging current from a direct-current source on and off; a current detection section that detects the charging current; an averaging section that averages output of the current detection section; a reference signal generation section that generates a reference signal; a comparison section that compares output of the averaging section with the reference signal; and a control section that controls the switch section based on output of the comparison section. - View Dependent Claims (3, 6)
-
-
2. A pulse charging apparatus comprising:
-
a switch section that turns a charging current from a direct-current source on and off; a current detection section that detects the charging current; a voltage averaging section that smoothes output of the current detection section; a triangular wave generation section that generates a triangular wave signal; a comparison section that compares output of the voltage averaging section with the triangular wave signal; and a control section that controls the switch section based on output of the comparison section. - View Dependent Claims (4, 5)
-
Specification