Back to results
US 12,592,422 B2Granted
Battery fire detection device and energy storage system determining a risk of fire or a fire
AssigneeSK On Co., Ltd.
InventorsSuk Chul Kim, Dae Won Kwon, Yong Uk Kim, Jong Ho Seok
Life of this patent
Estimating the term…
Abstract
A battery fire detection device according to an embodiment includes: a first sensor configured to detect whether a gas vent of a battery cell is opened; a second sensor configured to detect a temperature of the battery cell; and a controller configured to determine whether there is a risk of fire or whether a fire occurs in the battery cell based on detection results of the first sensor and the second sensor.
Claims9
A battery fire detection device comprising:
- a first sensor configured to detect whether a gas vent of a battery cell is opened;
- a second sensor configured to detect a temperature of the battery cell;
- and
- a controller configured to receive detection signals from the first sensor and the second sensor, and to determine whether the battery cell is at a risk of fire or whether a fire has occurred, based on at least one of the detection signals,
- wherein the controller is configured to determine whether the battery cell is at a risk of fire or whether a fire has occurred using different algorithms depending on whether the gas vent is open or unopened,
- wherein the controller is configured to determine, while the gas vent remains unopened, that the battery cell is at risk of fire or that a fire has occurred when the temperature of the battery cell based on detection results of the second sensor detecting the temperature of the battery cell increases by at least a third temperature over a second period of time,
- wherein the controller is further configured to determine whether the gas vent is opened, and after the gas vent is opened and based on the detection results of the second sensor detecting the temperature of the battery cell, determine that the battery cell is at risk of fire or that a fire has occurred when the temperature of the battery cell decreases by at least a second temperature over a first period of time, and
- wherein when the temperature of the battery cell does not decrease by the at least the second temperature from a first temperature over the first period of time, the controller is further configured to redetermine whether the gas vent is opened.
5 more elements
An energy storage system comprising:
- a battery rack;
- a cooling device configured to cool battery cells included in the battery rack;
- a battery fire detection device configured to determine whether there is a risk of fire or whether a fire occurs in the battery cell included in the battery rack;
- and
- a battery management system configured to execute a fire coping measure when there is a battery cell at risk of fire or in which a fire has occurred therein,
- wherein the battery fire detection device comprises:
- a first sensor configured to detect whether a gas vent of the battery cell is opened;
- a second sensor configured to detect a temperature of the battery cell;
- and
- a controller configured to receive detection signals from the first sensor and the second sensor, and to determine whether the battery cell there is at a risk of fire or whether a fire has occurred in the battery cell based on at least one of the detection signals,
- wherein the controller is configured to determine whether the battery cell is at a risk of fire or whether a fire has occurred using different algorithms depending on whether the gas vent is open or unopened,
- wherein the controller is configured to determine, while the gas vent remains unopened, that the battery cell is at risk of fire or that a fire has occurred when the temperature of the battery cell based on detection results of the second sensor detecting the temperature of the battery cell increases by at least a third temperature over a second period of time,
- the controller is further configured to determine whether the gas vent is opened, and after the gas vent is opened and based on the detection results of the second sensor detecting the temperature of the battery cell, determine that the battery cell is at risk of fire or that a fire has occurred when the temperature of the battery cell decreases by at least a second temperature over a first period of time, and
- wherein when the temperature of the battery cell does not decrease by the at least the second temperature from a first temperature over the first period of time, the controller is further configured to redetermine whether the gas vent is opened.
11 more elements
Dependencies are inferred from the claim text.