Battery thermal event detection and suppression

Patent metadata

Field	Value
Publication number	US-2025256142-A1
Application number	US-202318856985-A
Country	US
Kind code	A1
Filing date	Apr 21, 2023
Priority date	Apr 21, 2022
Publication date	Aug 14, 2025
Grant date	—

Abstract

A suppression system is described. The suppression system includes a container having an internal space arranged to receive a battery, and an event monitor. The container includes one or more bags that include a suppression material. The one or more bags are arranged to discharge the suppression material at least to the internal space of the container based on one or more parameters and one or more control signals. The discharged suppression material is usable to control a battery event. The event monitor includes one or more sensors configured to measure the one or more parameters, which are transmittable by the event monitor to a monitoring device and trigger the one or more control signals.

First claim

1 . A suppression system comprising:
a container having an internal space arranged to receive a battery, the container comprising:
one or more bags comprising a suppression material, the one or more bags being arranged to discharge the suppression material at least to the internal space of the container based on one or more parameters and one or more control signals, the discharged suppression material being usable to control a battery event; and
an event monitor comprising one or more sensors configured to measure the one or more parameters, the measured one or more parameters being transmittable by the event monitor to a monitoring device and triggering the one or more control signals.

2 . The suppression system of claim 1 , wherein the one or more bags comprise one or both of:
a first bag, the one or more parameters comprise a first parameter, and the container comprises a valve coupled to the first bag and configured to open when the first parameter reaches or exceeds a first parameter threshold to discharge the suppression material of the first bag; and a second bag, the one or more parameters comprise a second parameter, and the container comprises a pin arranged to puncture the second bag when the second parameter reaches or exceeds a second parameter threshold to discharge the suppression material of the second bag.

3 . The suppression system of claim 2 , wherein the suppression material of the first bag and the second bag are discharged during a first discharge stage and a second discharge stage, respectively, based on the one or more parameters.

4 . The suppression system of claim 2 , wherein one or more of:
the valve is configured to receive a first control signal of the one or more control signals that triggers the valve to open to discharge the suppression material of the first bag; the opening of the valve is associated with a first exposure period in which the discharged suppression material is exposed to the battery; the pin is configured receive a second control signal of the one or more control signals that triggers the pin to puncture the second bag to discharge the suppression material of the second bag; and the puncturing of the second bag is associated with a second exposure period in which the discharged suppression material is exposed to the battery.

5 . The suppression system of claim 1 , wherein the container comprises an exhaust port arranged to receive a third control signal of the one or more control signals that triggers the exhaust port to control a release of the discharged suppression material from the internal space, the release of the discharged suppression material being controlled by one or more of opening the exhaust port, closing the exhaust port, throttling the exhaust port based on the one or more parameters.

6 . The suppression system of claim 5 , wherein the controlling of the release of the discharged suppression material by the exhaust port controls a third exposure period in which the discharged suppression material is exposed to the battery.

7 . The suppression system of claim 1 , wherein the suppression system further comprises first processing circuitry and a first communication interface, one or both of:
the first processing circuitry being configured to determine the one or more control signals based on the one or more parameters; and the first communication interface being configured to receive the one or more control signals based on the one or more parameters.

8 . The suppression system of claim 1 , wherein the event monitor further comprises a second communication interface configured to transmit the measured one or more parameters, the transmission of the measured one or more parameters triggering transmission of the one or more control signals.

9 . The suppression system of claim 1 , wherein the suppression material is arranged to flow through the internal space and absorb heat from one or more of the battery, the internal space, and the container.

10 . The suppression system of claim 1 , wherein one or more of:
the one or more parameters include one or more of a battery temperature, a pressure associated with the internal space, and a presence of the suppression material; the battery event is a thermal runaway event; and the discharged suppression material controls the thermal runaway event.

11 . A system comprising:
a suppression system comprising:
a container having an internal space arranged to receive a battery, the container comprising:
one or more bags comprising a suppression material, the one or more bags being arranged to discharge the suppression material at least to the internal space of the container based on one or more parameters and one or more control signals, the discharged suppression material being usable to control a battery event;

an event monitor comprising:
one or more sensors configured to measure the one or more parameters, the measured one or more parameters being transmittable by the event monitor to a monitoring device and triggering the one or more control signals; and
the monitoring device in communication with the event monitor and comprising:
a user interface configured to display the one or more parameters.

12 . The system of claim 11 , wherein one or more of:
the suppression system comprises first processing circuitry configured to:
trigger the discharge of the suppression material of at least one of the one or more bags;
the event monitor comprises second processing circuitry in communication with the one or more sensors and being configured to:
cause transmission of a message comprising the one or more parameters to the monitoring device;
the monitoring device comprises third processing circuitry configured to one or more of:
receive the message;
determine the battery event has occurred or a likelihood that the event will occur within a predetermined period of time based on one or both of the one or more parameters and a differential of the one or more parameters; and
cause transmission of the one or more control signals to the suppression system to trigger the discharge of the suppression material of at least one of the one or more bags based on the determination that the battery event has occurred or the likelihood that the event will occur within the predetermined period of time.

13 . The system of claim 11 , wherein the one or more bags comprise one or both of:
a first bag, the one or more parameters comprise a first parameter, and the container comprises a valve coupled to the first bag and configured to open when the first parameter reaches or exceeds a first parameter threshold to discharge the suppression material of the first bag; and a second bag, the one or more parameters comprise a second parameter, and the container comprises a pin arranged to puncture the second bag when the second parameter reaches or exceeds a second parameter threshold to discharge the suppression material of the second bag.

14 . The system of claim 13 , wherein the suppression material of the first bag and the second bag are discharged during a first discharge stage and a second discharge stage, respectively, based on the one or more parameters.

15 . The system of claim 13 , wherein one or more of:
the valve is configured to receive a first control signal of the one or more control signals that triggers the valve to open to discharge the suppression material of the first bag; the opening of the valve is associated with a first exposure period in which the discharged suppression material is exposed to the battery; the pin is configured receive a second control signal of the o

Assignees

• Cps Tech Holdings Llc

Inventors

• Boone David R

Classifications

• H01M10/486

  for measuring temperature · CPC title

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• A62C3/16

  in electrical installations, e.g. cableways · CPC title

• H01M50/682

  accommodated in battery or cell casings · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title