Wireless control system, wireless control method, and battery pack

Patent metadata

Field	Value
Publication number	US-2021037407-A1
Application number	US-201917043999-A
Country	US
Kind code	A1
Filing date	Nov 4, 2019
Priority date	Nov 21, 2018
Publication date	Feb 4, 2021
Grant date	—

Abstract

The present disclosure includes a wireless control system, a wireless control method, and a battery pack. The wireless control system includes a master configured to wirelessly transmit a first command packet, and first to Nth slaves to which first to Nth IDs are allocated, respectively. When the first slave receives the first command packet, the first slave wirelessly transmits a first response packet including first battery information and the first ID. When a k+1th slave receives the first command packet, the k+1th slave stands by to receive a kth response packet for a preparation period and wirelessly transmits a k+1th response packet including k+1th battery information and a k+1th ID. When the kth response packet is received by the k+1th slave within the preparation period, the k+1th response packet further includes kth battery information and a kth ID.

First claim

1 . A wireless control system for wirelessly collecting battery information of each of first to N th battery modules, the wireless control system comprising:
a master configured to wirelessly transmit a first command packet; and first to N th slaves to which first to N th identifications (IDs) are allocated, respectively, wherein the first slave is configured to wirelessly transmit a first response packet including first battery information indicating a condition of the first battery module and the first ID, when the first slave receives the first command packet, wherein a k+1 th slave is configured to, when the k+1 th slave receives the first command packet, stand by to receive a k th response packet from a k th slave for a preparation period, and wirelessly transmit a k+1 th response packet including k+1 th battery information indicating a condition of the k+1 th battery module and a k+1 th ID, wherein when the k th response packet is received by the k+1 th slave within the preparation period, the k+1 th response packet further includes k th battery information indicating a condition of a k th battery module and a k th ID, and wherein N is a natural number of 2 or greater, and k is a natural number of 1 or greater and N−1 or smaller.

2 . The wireless control system according to claim 1 , wherein the N th slave is configured to wirelessly transmit an N th response packet including N th battery information indicating a condition of the N th battery module and the N th ID at least two times, when the N th slave receives the first command packet.

3 . The wireless control system according to claim 1 , wherein the N th slave is configured to wirelessly transmit an N th response packet including N th battery information indicating a condition of the N th battery module and the N th ID, when the N th slave receives the first command packet, and
wherein an N−1 th slave is configured to wirelessly transmit an additional response packet including the N th battery information and the N th ID, when the N−1 th slave receives the N th response packet.

4 . The wireless control system according to claim 1 , wherein the k+1 th response packet does not include the k th ID and the k th battery information, when the k th response packet is not received by the k+1 th slave within the preparation period.

5 . The wireless control system according to claim 1 , wherein the master is configured to:
set the k+1 th slave as a first group, when the k+1 th response packet is received by the master within a predetermined period of time from a time point at which the first command packet was wirelessly transmitted, and set the k+1 th slave as a second group, when the k+1 th response packet is not received by the master within the predetermined period of time from the time point at which the first command packet was wirelessly transmitted.

6 . The wireless control system according to claim 5 , wherein the master is configured to wirelessly transmit a second command packet, when at least one of the first to N th slaves is set as the second group, and
wherein the second command packet includes the IDs of each slave set as the second group.

7 . The wireless control system according to claim 6 , wherein the master is configured to:
wirelessly transmit the first command packet with a first signal strength, and wirelessly transmit the second command packet with a first amplified signal strength, wherein the first amplified signal strength is higher than the first signal strength.

8 . The wireless control system according to claim 6 , wherein the k+1 th slave is configured to wirelessly transmit the k+1 th response packet when the second command packet includes the k+1 th ID.

9 . The wireless control system according to claim 8 , wherein the k+1 th slave is configured to:
when the second command packet includes the k+1 th ID, determine a relative rank of the k+1 th ID among all the IDs included in the second command packet, and wirelessly transmit the k+1 th response packet at a time slot associated with the relative rank.

10 . A battery pack comprising the wireless control system according to claim 1 .

11 . A wireless control method for wirelessly collecting, by a master, first to N th battery information indicating conditions of first to N th battery modules from first to N th slaves to which first to N th identifications (IDs) are allocated, respectively, the wireless control method comprising:
wirelessly transmitting, by the master, a first command packet to the first to N th slaves; wirelessly transmitting, by the first slave, a first response packet including the first battery information and the first ID when the first slave receives the first command packet; and standing by, by a k+1 th slave, to receive a k th response packet from a k th slave for a preparation period, and wirelessly transmitting a k+1 th response packet including k+1 th battery information and a k+1 th ID, when the k+1 th slave receives the first command packet, wherein the k+1 th response packet further includes k th battery information indicating a condition of the k th battery module and a k th ID when the k th response packet is received by the k+1 th slave within the preparation period, and wherein N is a natural number of 2 or greater, and k is a natural number of 1 or greater and N−1 or smaller.

12 . The wireless control method according to claim 11 , further comprising:
wirelessly transmitting, by the N th slave, an N th response packet including the N th battery information and the N th ID at least two times, when the N th slave receives the first command packet.

13 . The wireless control method according to claim 11 , further comprising:
wirelessly transmitting, by the N th slave, an N th response packet including the N th battery information and the N th ID, when the N th slave receives the first command packet; and wirelessly transmitting, by an N−1 th slave, an additional response packet including the N th battery information and the N th ID, when the N−1 th slave receives the N th response packet.

Assignees

• Lg Chemical Ltd

Inventors

• Park Chan-Ha

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H04W52/46

  in multi-hop networks, e.g. wireless relay networks · CPC title

• H04W52/0212

  managed by the network, e.g. network or access point is leader and terminal is follower · CPC title

• H04W4/48 Primary

  for in-vehicle communication · CPC title

• H04L69/26

  Special purpose or proprietary protocols or architectures (network applications for proprietary or special purpose networking environments H04L67/12) · CPC title