Battery thermal runaway detection method, device, system and battery management unit
A battery management unit and thermal runaway technology, applied in battery/fuel cell control devices, battery circuit devices, electrical devices, etc., can solve problems such as communication, low driving safety, and failure to burn out the battery management unit
Active Publication Date: 2021-03-09
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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Problems solved by technology
[0003] For the design of existing modules, the flexible printed circuit board (Flexible Printed Circuit Board; hereinafter referred to as: FPC) or the built-in battery monitoring unit (Cell Supervision Circuit; hereinafter referred to as: CSC) is located above the explosion-proof valve of the battery cell. Once thermal runaway occurs, The FPC or the built-in CSC will be splashed by the high-temperature electrolyte, which will burn it and fail to communicate with the Battery Management Unit (BMU).
In this case, the existing battery management system (Battery Management System; hereinafter referred to as: BMS) cannot detect the occurrence of thermal runaway, and cannot issue a warning, thereby endangering the personal safety of passengers.
[0004] The existing BMS or some thermal runaway monitoring solutions currently on the market are often prone to false positives or missed negatives, which not only affects the driving experience of the driver, but also endangers the personal safety of passengers, making driving safer. Low
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[0070] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0071] It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0072] Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.
[0073] figure 1 This is a flow chart of an embodi...
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The present application proposes a battery thermal runaway detection method, device, system, and battery management unit, wherein the battery thermal runaway detection method includes: acquiring the output signal of an air pressure sensor set in the battery pack, and acquiring the battery Packet parameter information; according to the output signal of the air pressure sensor, determine the state information of the air pressure sensor; according to the state information of the air pressure sensor and the parameter information of the battery pack, generate an alarm that the battery pack has thermal runaway Signal. The application can realize the combination of the air pressure sensor and the parameter information of the battery pack to detect the thermal runaway of the battery pack, improve the reliability of the thermal runaway detection of the battery pack, reduce the probability of missed and false alarms, and improve driving safety.
Description
【Technical field】 [0001] The present application relates to the field of battery technology, in particular to a detection method, device, system and battery management unit for thermal runaway of a battery. 【Background technique】 [0002] The power battery will inevitably heat up after working, and the battery is controllable under normal conditions, but it will get out of control under abnormal conditions (such as collision and / or overcharging, etc.). Once thermal runaway occurs, high temperature and The destructive force may burn through the battery box cover and catch fire, thereby endangering the personal safety of passengers and causing a great safety accident. With the requirements of the market, the energy density of power batteries continues to increase, and the market's demand for battery safety is getting higher and higher. Therefore, real-time monitoring and warning of thermal runaway of the power battery is necessary. [0003] For the design of existing modules...
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IPC IPC(8): H01M10/42
CPCH01M10/4207H01M10/4285H01M10/425H01M2010/4271H01M10/482H01M10/486H01M10/488H01M2010/4278Y02E60/10B60L2250/10B60L2240/545B60L58/24B60L3/0046Y02T10/70H01M10/4257H01M10/48H01M2220/20H01M50/569
Inventor 王潇曾超许佳但志敏侯贻真张伟胡国亮
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY