In this paper, the fault diagnosis of battery systems in new energy vehicles is reviewed in detail. Firstly, the common failures of lithium-ion batteries are classified, and the triggering mechanism of battery cell failure is briefly analyzed. Next, the existing fault diagnosis methods are described and classified in detail. Finally, the
The evolution of cathode materials in lithium-ion battery technology [12]. 2.4.1. Layered oxide cathode materials. Representative layered oxide cathodes encompass LiMO2 (M = Co, Ni, Mn), ternary
As a high-energy carrier, a battery can cause massive damage if abnormal energy release occurs. Therefore, battery system safety is the priority for electric vehicles (EVs) [9]. The most severe phenomenon is battery thermal runaway (BTR), an exothermic chain reaction that rapidly increases the battery''s internal temperature [10]. BTR can lead
Taking the leakage detection of byd-qin hybrid high-voltage system as an example, this paper analyzes the fault generation mechanism and puts forward the detection technology of new energy...
The probability analysis model of battery failure of a power battery unit is established according to the normal working range of power battery parameters. Through the real-time monitoring of
Numerous studies highlight that voltage abnormalities can precipitate various battery faults, broadly categorized into four types: overvoltage, undervoltage, rapid voltage
Numerous studies highlight that voltage abnormalities can precipitate various battery faults, broadly categorized into four types: overvoltage, undervoltage, rapid voltage fluctuations, and inadequate battery voltage uniformity. For instance, overvoltage suggests potential issues such as overcharging in the battery system and the deactivation
High voltage power integrated controller adopts high current and high voltage power electronic devices (such as IGBT). Its fast on-off produces high-power electromagnetic interference, which not only affects the electromagnetic compatibility of the electric drive system, but also leads to the electromagnetic emission level of the new energy vehicle higher than that
In this paper, due to the complexity of EVs'' battery thermal runaway tracing investigation and the limited capacity of on-board computing system, a double-layer fault diagnosis strategy for abnormal cells is proposed. The method bases on probability distribution, which can accurately trace a faulty cell and avoid misinterpreting a normal cell.
High Voltage Inter-lock (HVIL for short) is a safety design method that uses low-voltage signals to monitor the integrity and continuity of high-voltage circuits. The high-voltage interlock design can identify abnormal disconnection or damage of the high-voltage circuit, and disconnect the high-voltage power in time. Theoretically, the low
The probability analysis model of battery failure of a power battery unit is established according to the normal working range of power battery parameters. Through the real-time monitoring of the working parameters (T, V, I) of the battery unit, calculate the probability value of each parameter that may trigger the corresponding fault. Based on
2. High Voltage Safety Design for New Energy Vehicles In our previous article, we know that potential safety hazards of new energy vehicles include high-voltage system short circuit, high-voltage system insulation
According to statistics, 60% of fire accidents in new energy vehicles are caused by power batteries. The development of advanced fault diagnosis technology for power battery system has...
As an important energy source for new energy vehicles, lithium-ion batteries have the advantages of high Data-driven methods pay little attention to the mechanism of battery failure and mainly mine information from data. Yao et al. 20] proposed a fault diagnosis method which used support vector machine (SVM) to map the failure with covariance matrix of
As a high-energy carrier, a battery can cause massive damage if abnormal energy release occurs. Therefore, battery system safety is the priority for electric vehicles
Academic Journal of Engineering and Technology Science ISSN 2616-5767 Vol.6, Issue 9: 21-25, DOI: 10.25236/AJETS.2023.060904 Published by Francis Academic Press, UK
High Voltage Inter-lock (HVIL for short) is a safety design method that uses low-voltage signals to monitor the integrity and continuity of high-voltage circuits. The high-voltage interlock design can identify abnormal
Battery-powered electric vehicles (EVs) are poised to accelerate decarbonization in nearly every aspect of transportation. However, safety issues of
In this paper, the fault diagnosis of battery systems in new energy vehicles is reviewed in detail. Firstly, the common failures of lithium-ion batteries are classified, and the triggering mechanism of battery cell failure is
According to statistics, 60% of fire accidents in new energy vehicles are caused by power batteries. The development of advanced fault diagnosis technology for power battery system has...
Battery-powered electric vehicles (EVs) are poised to accelerate decarbonization in nearly every aspect of transportation. However, safety issues of commercial lithium-ion batteries related to the faults and failures in
High voltage batteries present an array of advantages for the myriad of industries invested in their technology. From off-highway vehicles and construction equipment to low-speed electric vehicles (LSEVs) and energy storage applications, let''s explore the ways high voltage batteries are pushing these industries forward. Construction
Finally, some common safety measures and solutions are proposed to improve the safety of new energy batteries, in hopes of improving the safety of batteries for new-energy vehicle. Keywords: New-energy vehicle; Power battery; Safety failure; Potential cause; Analysis and research Online publication: July 21, 2023 1. Introduction
In this paper, due to the complexity of EVs'' battery thermal runaway tracing investigation and the limited capacity of on-board computing system, a double-layer fault
The reliability of the high-voltage connector directly affects the quality of the vehicle. High-voltage systems work with currents of tens of amps, or even hundreds of amps, high-voltage connectors compared to traditional low-voltage connectors, need to withstand higher voltage and current, in the face of car vibration, bumps, rain, snow, mud and other harsh use of the environment, the
New energy vehicles use positioning bolts to fix the battery pack and power distribution copper row for fault maintenance. The distribution copper row obtains the single battery voltage in a crossway,
Adam Denlinger is manager of high-voltage systems research and development at Ford Motor Company. Adam''s team is responsible for delivering high-voltage battery system innovations—including packaging, durability, thermal, management and controls, and EMC—as well as human-centered technologies targeting an enhanced electrified vehicle ownership
DOI: 10.25236/ajets.2023.060904 Corpus ID: 261499317; Battery voltage fault diagnosis mechanism of new energy vehicles based on electronic diagnosis technology @article{Sun2023BatteryVF, title={Battery voltage fault diagnosis mechanism of new energy vehicles based on electronic diagnosis technology}, author={Baowen Sun}, journal={Academic
New energy vehicles use positioning bolts to fix the battery pack and power distribution copper row for fault maintenance. The distribution copper row obtains the single battery voltage in a
In this paper, the fault diagnosis of battery systems in new energy vehicles is reviewed in detail. Firstly, the common failures of lithium-ion batteries are classified, and the triggering mechanism of battery cell failure is briefly analyzed. Next, the existing fault diagnosis methods are described and classified in detail.
Furthermore, voltage abnormalities imply the potential occurrence of more severe faults. Due to the inconsistency in the voltage of the battery pack, when the battery management system fails to effectively monitor the individual voltages of power battery cells, the cell with the lowest voltage will experience over-discharge first.
In the actual operation of electric vehicles, the state of the battery is continually influenced by various random factors, including the environment, driving behavior, and weather. Battery cells or accessories may incur diverse faults owing to the aging process or misuse during practical application.
Therefore, developing a reliable and efficient early warning model for battery failures is not just about selecting an optimal embedding time. It also necessitates understanding the nature and severity of potential faults and the anticipated prediction tasks. This knowledge is as crucial as the selection of embedding time.
With the increase in vehicle running time and the uncertainty of operating conditions, the vibration, corrosion of components, and expansion of battery gas production can trigger the failure of internal connection components of the battery system, such as loose nuts or welding joints and poor contact [46, 48].
The faults of the battery system cause significant damage to people's life and property safety. Meanwhile, it also increases people's safety anxiety about EVs [5, 6]. Although various fault analysis and diagnosis methods have been widely used in battery faults research [7, 8].
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