Battery isolator
First Claim
1. In an electrical system that includes at least a first battery and a second battery, wherein a negative terminal of each of the first and second batteries are connected together at a ground point and a charge source is connected in parallel with one of the first and second batteries, a battery isolator comprising:
- an inductor having a first terminal and a second terminal;
a first switch connected between a positive terminal of the first battery and the first terminal of the inductor; and
a second switch connected between a second terminal of the inductor and a positive terminal of the second battery, wherein the first and second switches are selectively actuated to charge at least one of the first battery and the second battery.
2 Assignments
0 Petitions
Accused Products
Abstract
A battery isolator for an electrical system that includes at least a first battery and a second battery, wherein a negative terminal of each of the first and second batteries are connected together at a ground point and a charge source is connected in parallel with one of the first and second batteries. The battery isolator comprises an inductor having a first terminal and a second terminal, a first switch connected between a positive terminal of the first battery and the first terminal of the inductor, and a second switch connected between a second terminal of the inductor and a positive terminal of the second battery. The first and second switches are selectively actuated in a predetermined manner, such that the battery isolator can be used to charge one of the first battery and the second battery. At least one of the first and second switches may be selectively actuated to prevent one of the first and second batteries from substantially discharging the other battery when a charge source is not present.
-
Citations
22 Claims
-
1. In an electrical system that includes at least a first battery and a second battery, wherein a negative terminal of each of the first and second batteries are connected together at a ground point and a charge source is connected in parallel with one of the first and second batteries, a battery isolator comprising:
-
an inductor having a first terminal and a second terminal;
a first switch connected between a positive terminal of the first battery and the first terminal of the inductor; and
a second switch connected between a second terminal of the inductor and a positive terminal of the second battery, wherein the first and second switches are selectively actuated to charge at least one of the first battery and the second battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. In an electrical system that includes at least a first battery and a second battery, wherein a negative terminal of each of the first and second batteries are connected together at a ground point and a charge source is connected in parallel with one of the first and second batteries, a battery isolator comprising:
-
an inductor having a first terminal and a second terminal;
a first switch connected between a positive terminal of the first battery and the first terminal of the inductor;
a second switch connected between a second terminal of the inductor and a positive terminal of the second battery;
a third switch connected between the first terminal of the inductor and the ground; and
a fourth switch connected between the second terminal of the inductor of the ground;
wherein the first, second, third and fourth switches are selectively actuated to charge at least one of the first battery and the second battery. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. In an electrical system that includes at least a first battery and a second battery, wherein a negative terminal of each of the first and second batteries are connected together at a ground point and a charge source is connected in parallel with one of the first and second batteries, a battery isolator comprising:
-
an inductor having a first terminal and a second terminal;
a first switch connected between a positive terminal of the first battery and the first terminal of the inductor;
a second switch connected between a second terminal of the inductor and a positive terminal of the second battery;
a third switch connected between the first terminal of the inductor and the ground; and
a fourth switch connected between the second terminal of the inductor of the ground, wherein the first, second, third and fourth switches are selectively actuated to function as one of a buck switching converter and a boost switching converter to charge at least one of the first battery and the second battery.
-
-
22. In an electrical system that includes at least a first battery and a second battery, wherein a negative terminal of each of the first and second batteries are connected together at a ground point and a charge source is connected in parallel with one of the first and second batteries, a battery isolator comprising:
-
an inductor having a first, a second, a third and a fourth winding, a first end of each winding being connected together;
a first switch connected between a positive terminal of the first battery and a second end of the first winding;
a second switch connected between a second end of the second winding and the ground;
a third switch connected between a positive terminal of the second battery and a second end of the third winding; and
a fourth switch connected between a second end of the fourth winding and the ground;
wherein the first, second, third and fourth switches are selectively actuated to charge at least one of the first battery and the second battery.
-
Specification