Energy storage system and synchronization method thereof

Patent metadata

Field	Value
Publication number	US-2016254667-A1
Application number	US-201514928933-A
Country	US
Kind code	A1
Filing date	Oct 30, 2015
Priority date	Feb 26, 2015
Publication date	Sep 1, 2016
Grant date	—

Abstract

An energy storage system includes: a plurality of slave power controllers connected to respective battery modules; and a master power controller configured to transmit a first signal to the plurality of slave power controllers and transmit a second signal for controlling synchronizations of the plurality of slave power controllers to the plurality of salve power controllers according to a reception time at which each of the plurality of salve power controllers receives the first signal.

First claim

What is claimed is:

1 . An energy storage system comprising:
a plurality of slave power controllers connected to respective battery modules; and a master power controller configured to transmit a first signal to the plurality of slave power controllers and transmit a second signal for controlling synchronizations of the plurality of slave power controllers to the plurality of salve power controllers according to a reception time at which each of the plurality of salve power controllers receives the first signal.

2 . The system according to claim 1 , wherein the master power controller transmits the first signal to one of the plurality of slave power controllers and the plurality of slave power controllers transmit the first signal sequentially and measure the reception time.

3 . The system according to claim 2 , wherein another one of the plurality of slave power controllers transmits the reception time of each of the plurality of salve power controllers to the master power controller.

4 . The system according to claim 1 , wherein
the master power controller and the plurality of salve power controllers are connected to a ring network; the master power controller transmits the first signal to one of the plurality of master power controllers; and the plurality of slave power controllers sequentially transmit the first signal according to the ring network.

5 . The system according to claim 4 , wherein the plurality of slave power controllers measure the reception time and deliver the reception time sequentially according to the ring network.

6 . The system according to claim 5 , wherein another one of the plurality of slave power controllers transmits the reception time of each of the plurality of slave power controllers to the master power controller.

7 . The system according to claim 1 , wherein the master power controller transmits the second signal to one of the plurality of slave power controllers on the basis of a reception time of each of the plurality of slave power controllers.

8 . The system of claim 7 , wherein the master power controller and the plurality of slave power controllers are connected to a ring network and the plurality of salve power controllers sequentially transmit the second signal according to the ring network.

9 . The system according to claim 7 , wherein the second signal comprises synchronization data for synchronizing the plurality of slave power controllers.

10 . The system according to claim 7 , wherein the second signal further comprises control data for controlling each of the plurality of slave power controllers.

11 . The system according to claim 1 , wherein the plurality of slave power controllers simultaneously control all batteries connected to the plurality of slave power controllers in response to the second signal.

12 . The system according to claim 1 , wherein types of the first signal and the second signal are different from each other.

13 . The system according to claim 1 , wherein the first signal is a test signal and the second signal comprises synchronization data for synchronizing the plurality of slave power controllers and control data for controlling each of the plurality of slave power controllers.

14 . An energy storage system synchronizing method comprising,
when a first signal is received by a plurality of slave power controllers, measuring a reception time at which each of the plurality of slave power controllers receives the first signal; and receiving, by the plurality of salve power controllers, a second signal for controlling synchronizations of the plurality of slave power controllers on the basis of the reception time.

15 . The method according to claim 14 , wherein the measuring of the reception time comprises: when a master power controller transmits the first signal,
receiving the first signal by one of the plurality of slave power controllers; and sequentially transmitting the first signal received by one of the plurality of slave power controllers, by the plurality of slave power controllers.

16 . The method according to claim 14 , wherein the plurality of slave power controllers are connected to a ring network and the first signal received by one of the plurality of salve power controllers is sequentially delivered to the plurality of salve power controllers according to the ring network.

17 . The method according to claim 14 , wherein the measuring of the reception time comprises measuring a reception time at which each of the plurality of slave power controllers receives the first signal.

18 . The method according to claim 14 , wherein the second signal comprises synchronization data for synchronizing the plurality of slave power controllers.

19 . The method according to claim 18 , wherein the second signal further comprises control data for controlling the plurality of salve power controllers.

20 . The method according to claim 14 , further comprising simultaneously controlling, by the plurality of slave power controllers, all battery modules connected to the plurality of slave power controllers in response to the second signal.

Assignees

• Lsis Co Ltd

Inventors

• Lee Seong Joon

Classifications

• H02J13/16

  the power network being controlled at grid-level, e.g. using aggregators · CPC title

• H02J7/50 Primary

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J9/00

  Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting · CPC title

• H02J3/32 Primary

  using batteries or super capacitors with converting means · CPC title

• Y04S10/123

  the energy generation units being or involving renewable energy sources · CPC title