Parallel hybrid battery pack charging
First Claim
Patent Images
1. A charge circuit for a hybrid battery pack, the charge circuit comprising:
- a first switch operable to provide a charge to a first cell stack of the hybrid battery pack;
a first charge switch coupled in parallel with the first switch;
a second switch operable to provide the charge to a second cell stack of the hybrid battery pack, wherein the first cell stack and the second cell stack are coupled in parallel;
a second charge switch coupled in parallel with the second switch; and
a controller to control each one of the first switch and the second switch in accordance with a parallel charging sequence for the first cell stack and the second cell stack, wherein the parallel charging sequence includes providing the charge to the first cell and to the second cell in parallel during a pre-charge phase and during a trickle-charge phase.
14 Assignments
0 Petitions
Accused Products
Abstract
For charging a rechargeable hybrid battery pack, a first cell stack coupled in parallel with a second cell stack of the hybrid battery pack are pre-charged in parallel. The cell stack to first complete the pre-charge phase, is selected to receive a normal charge with a constant current while the non-selected one of the cell stack continues to receive the pre-charge. The first cell stack and the second cell stack receive the normal charge in the selected sequence. Upon completion of the normal charge for each cell of the hybrid battery pack, the first cell stack and the second cell stack are trickle-charged in parallel to complete the charging.
-
Citations
18 Claims
-
1. A charge circuit for a hybrid battery pack, the charge circuit comprising:
-
a first switch operable to provide a charge to a first cell stack of the hybrid battery pack; a first charge switch coupled in parallel with the first switch; a second switch operable to provide the charge to a second cell stack of the hybrid battery pack, wherein the first cell stack and the second cell stack are coupled in parallel; a second charge switch coupled in parallel with the second switch; and a controller to control each one of the first switch and the second switch in accordance with a parallel charging sequence for the first cell stack and the second cell stack, wherein the parallel charging sequence includes providing the charge to the first cell and to the second cell in parallel during a pre-charge phase and during a trickle-charge phase. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for charging a rechargeable hybrid battery pack, the method comprising:
-
pre-charging a first cell stack and a second cell stack, wherein the pre-charging of the first cell stack and the second cell stack occurs in parallel, wherein the hybrid battery pack includes the first cell stack and the second cell stack; charging the first cell stack and the second cell stack, wherein the charging occurs with a constant current charge provided in sequence to one of the first cell stack and the second cell stack; and trickle-charging the first cell stack and the second cell stack, wherein the trickle-charging of the first cell stack and the second cell stack occurs in parallel. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. An information handling system (IHS) comprising:
-
a processor; a hybrid rechargeable battery operable to provide power to the processor, wherein the hybrid rechargeable battery includes; a first cell stack operable to store the power; and a second cell stack coupled in parallel to the first cell stack, wherein the second stack is operable to store the power; a first switch operable to provide a charge to the first cell stack; a first charge switch coupled in parallel with the first switch; a second switch operable to provide the charge to the second cell stack; a second charge switch coupled in parallel with the second switch; and a controller to control each one of the first switch and the second switch in accordance with a parallel charging sequence for the first cell stack and the second cell stack, wherein the parallel charging sequence includes providing the charge to the first cell and to the second cell in parallel during a pre-charge phase and during a trickle-charge phase. - View Dependent Claims (16, 17, 18)
-
Specification