Method for acquiring key detection area of battery cell, battery intelligent safety detection method, device and system and vehicle

Abstract

The invention discloses a method for acquiring a key detection area of a battery cell, and the method comprises the steps: forming a pressure distribution diagram of a first surface through obtaining the pressure data of the first surface of the battery cell in one or a plurality of charging and discharging cycles under a preset condition, and determining the key detection area according to the pressure distribution diagram. Furthermore, the invention also discloses a battery intelligent safety detection method, which comprises the following steps: acquiring the pressure data of the first surface of the battery cell in the battery assembly detected by the pressure detection unit, analyzing and processing the pressure data of the key detection area in the first surface, and judging whether the battery cell has potential safety hazards or not according to a preset standard. The invention further discloses a battery intelligent safety detection device and system and a vehicle. According to the invention, the accuracy of battery safety detection can be improved, and early warning of battery health problems is realized.

Description

technical field [0001] The present application belongs to the field of battery detection, and in particular relates to a method for obtaining key detection areas of battery cells, a battery intelligent safety detection method, device, system and vehicle. Background technique [0002] With the integration of the new energy vehicle tide, traditional car factories are also accelerating their layout in the direction of new energy. At present, common new energy vehicles usually use rechargeable batteries to provide power. However, the successive spontaneous combustion and explosion accidents of batteries have pushed the safety and stability of new energy vehicle batteries into the air of public opinion and become a pain point in the industry. More people pay attention. At present, the management and detection of common power batteries usually focus on dimensions such as temperature, voltage, current, and chemical gas detection, and comprehensively monitor and manage the operatin...

AI Technical Summary

Problems solved by technology

However, safety monitoring from these dimensions is still not sufficient, and often fails to detect potential safety hazards in time

[0003] The current method of monitoring battery safety through pressure sensors is usually to install a single-point or multi-point pressure sensor on the battery to detect the expansion of the battery through a single-point or multi-point pressure sensor. The working conditions are more complicated, and the place where the expansion and deformation occur is not necessarily the place that is estimated in advance. Therefore, the detection of battery expansion by single-point or multi-point pressure sensors often leads to missed detection or inaccurate detection results.

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