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A method, device, storage medium and electronic device for detecting abnormality of battery pack

A detection method and battery pack technology, applied in measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as uneven temperature, overcharging and overdischarging, failure to fire and explode early warning, etc., to eliminate potential safety hazards and improve safety performance effect

Active Publication Date: 2021-12-03
NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, during the use of the battery pack, there may be reasons such as uneven temperature, overcharge and overdischarge, external short circuit, internal short circuit, etc. that may easily cause the thermal runaway of the battery pack, and there may be mechanical reasons such as water ingress, poor sealing, and collision. It may cause the battery pack to catch fire and explode, thereby causing electric vehicles to have a safety hazard of fire and explosion
[0004] At present, electric vehicles mainly monitor the safety performance of battery packs and issue safety alarms through BMS (Battery Management System, battery management system), but BMS can only perform real-time safety monitoring, but cannot provide early warning for fire and explosion events, so it cannot be timely Eliminate potential safety hazards

Method used

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  • A method, device, storage medium and electronic device for detecting abnormality of battery pack
  • A method, device, storage medium and electronic device for detecting abnormality of battery pack
  • A method, device, storage medium and electronic device for detecting abnormality of battery pack

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Embodiment 1

[0052]Embodiment 1 of the present application provides a method for detecting an abnormality of a battery pack. In practical application, the method can be implemented by an electric vehicle, such as by the BMS of the electric vehicle, or by a remote server, and then the detection result is sent to the electric vehicle, which is not specifically limited in this embodiment of the present application. The detection method will be described in detail below in conjunction with the accompanying drawings.

[0053] see figure 1 , which is a flowchart of a method for detecting an abnormality of a battery pack provided in an embodiment of the present application.

[0054] The method described in the embodiment of the present application includes the following steps:

[0055] S101: Obtain the difference between the maximum value and the minimum value of the same performance parameter of each single battery cell at the same time.

[0056] The battery pack of an electric vehicle usuall...

Embodiment 2

[0084] Based on the method for detecting an abnormality of a battery pack provided in the foregoing embodiments, Embodiment 2 of the present application further provides a device for detecting an abnormality of a battery pack, which will be described in detail below with reference to the accompanying drawings.

[0085] see figure 2 , which is a schematic diagram of a battery pack abnormality detection device provided in an embodiment of the present application.

[0086] The device described in this embodiment of the present application includes: an acquiring unit 201 , a first determining unit 202 and a second determining unit 203 .

[0087] The acquiring unit 201 is used to acquire the difference between the maximum value and the minimum value of the same performance parameter of each single battery cell at the same time.

[0088] Wherein, the performance parameters of the single cell include at least one of the following:

[0089] Cell voltage, cell current, cell temperat...

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Abstract

The application provides a battery pack abnormality detection method, device, storage medium and electronic equipment, and relates to the technical field of battery safety detection. Wherein, the method includes: obtaining the difference between the maximum value and the minimum value of the same performance parameter of each single cell at the same time; according to the difference, the rate of change of the difference over time, and the rate of change Derivative of the current risk level is determined; when the current risk level exceeds a preset level threshold, it is determined that the electric vehicle is in danger of fire and explosion. Using this method, an early warning can be given to a possible battery pack explosion and fire event so as to eliminate potential safety hazards in time, thereby improving the safety performance of the electric vehicle.

Description

technical field [0001] The present application relates to the technical field of battery safety detection, and in particular to a detection method, device, storage medium and electronic equipment for abnormality of a battery pack. Background technique [0002] With the aggravation of energy shortage and environmental pollution in modern society, electric vehicles, as new energy vehicles, have attracted widespread attention from all walks of life once they were launched. An electric vehicle is a vehicle that relies on the power supply provided by the vehicle-mounted power battery pack (hereinafter referred to as the battery pack), uses the motor to drive the wheels, and meets the requirements of road traffic and safety regulations. [0003] However, during the use of the battery pack, there may be reasons such as uneven temperature, overcharge and overdischarge, external short circuit, internal short circuit, etc. that may easily cause the thermal runaway of the battery pack,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/382G01R31/385G01R31/389G01R31/371
CPCG01R31/371G01R31/382G01R31/385G01R31/389
Inventor 郭毅
Owner NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD