Power storage device control system, power storage system, and electrical appliance

Inventors: Minoru Takahashi (Nagano, JP); Junpei Momo (Kanagawa, JP); Yutaka Shionoiri (Kanagawa, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

H02J7/007 H01G11/06 H01G11/10 H01M4/5825 H01M10/0525 H01M10/441 H02J7/0024 H02J7/0069 H01M10/4207

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Order via The Patent Place →

Pre-filled with this patent's details

Quick Facts

Patent No.: US 10,897,152
App. No.: 15/424,152
Granted: Jan 19, 2021
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.

Claims (32)

1. A method for controlling an electric power, the method comprising the steps of:

charging one of a first power storage element and a second power storage element by connecting a power source, and charging one of a third power storage element and a fourth power storage element by connecting the power source, wherein the one of the first power storage element and the second power storage element and the one of the third power storage element and the fourth power storage element connect in parallel, while discharging the other one of the first power storage element and the second power storage element, and discharging the other one of the third power storage element and the fourth power storage element, wherein the other one of the first power storage element and the second power storage element and the other one of the third power storage element and the fourth power storage element connect in series; and

discharging the first power storage element the second power storage element the third power storage element, and the fourth power storage element by connecting a load, wherein the first power storage element and the second power storage element connect in parallel, wherein the third power storage element and the fourth power storage element connect in parallel, wherein the first power storage element connects to each of the third power storage element and the fourth power storage element in series, and wherein the second power storage element connects to each of the third power storage element and the fourth power storage element in series, thereby supplying a current to the load.

2. The method according to claim 1 ,

wherein the load is an appliance.

3. The method according to claim 1 ,

wherein each of the first power storage element, the second power storage element the third power storage element, and the fourth power storage element is a lithium-ion secondary battery.

4. The method according to claim 3 ,

wherein the lithium-ion secondary battery comprises an olivine-type lithium-containing composite phosphate.

5. The method according to claim 3 ,

wherein the lithium-ion secondary battery comprises LiFePO 4 .

6. A method for controlling an electric power, the method comprising the steps of:

discharging the first power storage element, the second power storage element, the third power storage element, and the fourth power storage element by connecting a load, wherein the first power storage element and the second power storage element connect in parallel, wherein the third power storage element and the fourth power storage element connect in parallel, wherein the first power storage element connects to each of the third power storage element and the fourth power storage element in series, and wherein the second power storage element connects to each of the third power storage element and the fourth power storage element in parallel, thereby supplying a current to the load.

7. The method according to claim 6 ,

wherein the load is an appliance.

8. The method according to claim 6 ,

wherein each of the first power storage element, the second power storage element, the third power storage element, the fourth power storage element is a lithium-ion secondary battery.

9. The method according to claim 6 ,

wherein the lithium-ion secondary battery comprises an olivine-type lithium-containing composite phosphate.

10. The method according to claim 6 ,

wherein the lithium-ion secondary battery comprises LiFePO 4 .

11. A method for controlling an electric power, the method comprising the steps of:

12. The method according to claim 11 ,

wherein the load is an appliance.

13. The method according to claim 11 ,

wherein each of the first power storage element, the second power storage element, the third power storage element, the fourth power storage element is a lithium-ion secondary battery.

14. The method according to claim 11 ,

wherein the lithium-ion secondary battery comprises an olivine-type lithium-containing composite phosphate.

15. The method according to claim 11 ,

wherein the lithium-ion secondary battery comprises LiFePO 4 .

Priority Claims (1)

JP 2012-287574 · Dec 28, 2012 · national

Continuity (2)

Continuation 14136732 · Dec 20, 2013

Related Publication 20170149253A1 · May 25, 2017

Cited By (3)

US 12,374,913 US 12,567,752 US 12,580,394