JP2013096752A
PROBLEM TO BE SOLVED: To provide an abnormality determination method for battery pack and a battery pack, which can securely determine whether or not an abnormal secondary battery is in a battery pack in which a plurality of secondary batteries are connected in parallel.SOLUTION: The abnormality determination method for battery pack includes: during
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Detecting Abnormality of Battery Lifetime from First‐Cycle Data
1. Introduction. The lithium‐ion battery is widely regarded as a promising device for achieving a sustainable society. [1, 2 ] Nevertheless, its manufacturing process is always accompanied by high consumption of energy and raw materials.[3, 4 ] Therefore, a long enough service life is critical to achieve net‐zero carbon emissions and make positive
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Fault Diagnosis for Lithium-Ion Batteries in Electric
that the abnormality of cell A is gradually serious, which may be the evolution of the voltage abnormality brought by the fault from occurrence to seriousness. After the 10th charging segment, the battery pack suffered from thermal runaway, which is probably caused by the gradual seriousness of the fault of cell A.
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CN113892221A
Even if the microcomputer of the charging circuit is out of control, abnormal charging is not performed. A battery pack (100) is provided with: a current detection unit (4) that detects a charging current to the secondary battery (1); a drive circuit (10) that drives the charge switch unit (2) on the basis of the charge current detected by the current detection unit (4); a charge
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What is Abnormal Voltage Gap?
Single battery cell charge/discharge. Due to the abnormal PACK process, there is a large voltage gap appear after the battery module is manufactured. At this time, the use of the power-filling cabinet to charge/discharge the single cell is the most common method in production. When the power supply cabinet is used to charge/discharge a cell
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JP5028003B2
charging charger battery pack signal charging current Prior art date 2005-10-19 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number JP2005304348A Other languages Japanese (ja) Other
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Data–Driven Fault Diagnosis and Cause Analysis of Battery Pack
If cell voltages are different within the same battery pack due to severe cell unbalance, an abnormality exists. Moreover, if cell unbalancing is severe, the battery capacity
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Fault Diagnosis and Abnormality Detection of Lithium-ion Battery
the designed coefficient, the systematic faults of battery pack and possible abnormal state can be timely diagnosed. 2) The t-SNE technique, The K-means clustering and Z-score methods are
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Anomaly Detection for Charging Voltage Profiles in
For a large lithium battery pack within an energy storage station, the RPCA-based anomaly detection method proposed in this article can effectively detect and identify abnormal battery cells within the battery pack.
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Fault diagnosis and abnormality detection of lithium-ion battery
For instance, when the battery pack is being charged, an abnormal voltage signal may indicate over-voltage or under-voltage faults, even other parameters look normal.
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A Data-Driven Method for Battery Charging Capacity
A Data-Driven Method for Battery Charging Capacity Abnormality Diagnosis in Electric Vehicle Applications October 2021 IEEE Transactions on Transportation Electrification PP(99):1-1
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Method for judging abnormality of battery pack, and battery pack
the cell voltage When the cell voltage reaches the end voltage Vm, the cell voltage is switched to a constant current (CC) charge region, and the terminal voltage of the charge / discharge terminal of the battery pack is 4.2 V per cell, which is a predetermined end voltage Vf For example, in the case of 3 cells in series, the end voltage Vf is applied to the charging terminal until 12.6 V
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A Method for Abnormality Detection of Lithium-Ion Battery
When abnormalities occur in battery packs, parameters that characterize inconsistencies, such as voltage, temperature, and state of charge (SOC), often show
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LiFePo4 Charge drop after charging | DIY Solar
Float only means no net charging current goes into battery. Full charging depends on fully completing transfer of lithium ions into graphite. If you are at or above 3.43v and charging current has dropped to near zero it is fully
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Why Won''t My Computer Charge My Battery Pack?
The common reasons why your computer is not charging your battery pack include hardware issues, software problems, and power source failures. Faulty charger or power adapter Insufficient power light indicators refer to any abnormal behavior of the laptop''s charging light. This light should normally illuminate when the charger is connected
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Anomaly Detection for Charging Voltage Profiles in
Lithium-ion batteries, with their high energy density, long cycle life, and non-polluting advantages, are widely used in energy storage stations. Connecting lithium batteries in series to form a battery pack can achieve the
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CN101460859A
Thus, charging is prevented from being continued due to the fact that the cell voltage does not reach a prescribed threshold voltage by the internal short-circuit of the cell and the abnormality of the voltage detecting circuit. Provided is a method for judging abnormalities of a battery pack, which is provided with a secondary battery composed
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JP2007327772A
SOLUTION: A charge control determination part 21 uses the cell voltage detected at a voltage detection circuit 20, a voltage between terminals T11 and T13 received from a battery charger 2 via a communication part 22, and the charge current value detected at a current detection resistor 16 to determine the route resistance of the charging and discharging routes 11 and 15 on the
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Fault Diagnosis for Lithium-Ion Battery Pack
Common battery faults include overcharge/over-discharge, connection fault, external/internal short circuit, sensor fault and inconsistency within the battery pack. A variety of
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Chrysler Warns 24,000 Pacifica Hybrid
The solution to the problem is a software update that will be able to detect the abnormality within the battery pack. In these cases, owners will get a free-of-charge battery
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Voltage-fault diagnosis for battery pack in electric vehicles using
A battery voltage fault diagnosis method is proposed by using the mutual information in this work, which can identify faulty cells timely. Specifically, the voltage of
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US20220352729A1
A battery pack includes a current detector configured to detect a charging current to secondary battery, a drive circuit configured to drives a charge switch based on the charging current detected by the current detector, a charge controller configured to control operation of the charge switch by the drive circuit, a monitoring unit configured to monitor operation of charge controller, and a
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Data–Driven Fault Diagnosis and Cause
Owing to the increasing use of electric vehicles (EVs), the demand for lithium-ion (Li-ion) batteries is rising. In this light, an essential factor governing the safety and efficiency of
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A Method for Abnormal Battery Charging
Overcharging due to an abnormal charging capacity is one of the most common causes of thermal runaway (TR). This study proposes a method for diagnosing abnormal
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After 10days H441
It does take less time to replace an entire battery pack than a single module inside. It avoids the a labor and parts for opening of the pack, the individual modules, resealing and pressure testing the battery pack before re-installing it in the car. However, that 7 module limit text comes from Jaguar''s SSM776062.
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US20040001996A1
In a battery pack which includes a plurality of parallel blocks, each of which comprises a plurality of cells connected in parallel, and which are themselves connected in series, the voltage of each parallel block of the battery pack before and after discharge or before and after charge of a predetermined amount of capacity is detected, and abnormality of the cells connected in
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WO2018230115A1
A battery pack comprises one or more of a rechargeable battery (1), an output switch (2) that is serially connected to the output side of the battery (1), a control circuit (3) that detects the voltage of the battery (1) and controls the output switch (2) so as to turn on and off, a fuse (5) that is serially connected to the battery (1) and is fused when there is an abnormality in the battery
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Fault Diagnosis and Abnormality Detection of Lithium
This study investigates a novel fault diagnosis and abnormality detection method for battery packs of electric scooters based on statistical distribution of operation data that are stored in the
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BQ27Z746: Inquiry Regarding Charging Abnormality with
The battery pack has not started charge and discharge testing yet, so there are no log files available at the moment. It is only reading the register status before the test. We are currently encountering an issue with the BQ27z746, reported by one of our customers, where charging behavior appears abnormal. Below are the observed details: AT
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Cloud Platform Oriented Electrical Vehicle Abnormal Battery Cell
proposed method enables cloudbased real-time EV battery - abnormal cell detection. A big data -based battery pack consistency evaluation method using charging process data is proposed and
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Fault diagnosis for cell voltage inconsistency of a battery pack in
The consistency problem of the power battery pack during charging is easier to be reflected. At the end of charging, there will be no small battery pack voltage range, but with the end of charging behavior, the range will decrease rapidly, and a no-fault alarm is generated, indicating that no alarm measures are taken for the consistency problem
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US7332891B2
In a battery pack which includes a plurality of parallel blocks, each of which comprises a plurality of cells connected in parallel, and which are themselves connected in series, the voltage of each parallel block of the battery pack before and after discharge or before and after charge of a predetermined amount of capacity is detected, and abnormality of the cells connected in
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A novel battery abnormality detection method using
After pre-processing and statistical analysis, a total of 16,150 charging segments have been intercepted, of which 16,120 are from normal vehicles, whereas the remaining 30 are from the last two charging segments before the battery thermal runaway occurred. 16,000 segments from normal vehicles are used as the training set, which are
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WO2020262002A1
The objective of the present invention is to prevent abnormal charging from being performed even in the event that a microcomputer in a charging circuit runs out of control. A battery pack (100) is provided with: a current detecting unit (4) for detecting a charging current to a secondary battery (1); a drive circuit (10) for driving a charge switch unit (2) on the basis of the charging
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Detecting Abnormality of Battery Lifetime
This work proposes a lifetime abnormality detection method for batteries based on few-shot learning and using only the first-cycle aging data. Verified with the largest
View more6 FAQs about [Battery pack abnormality after charging]
How to detect a faulty battery pack?
The systematic faults of battery pack and possible abnormal state can be diagnosed by one coefficient. For the voltage abnormality, an accurate detection and location algorithm of the abnormal cell voltage are attained by combining the data analysis method and the visualization technique.
What are common electrical faults of battery packs?
Common electrical faults of battery packs can be divided into three categories: abuse , sensor faults and connection faults . Battery abuse faults mainly refer to external short circuit (ESC), internal short circuit (ISC), overcharge and over-discharge.
How to detect abnormal cell voltage in a battery pack?
By applying the designed coefficient, the systematic faults of battery pack and possible abnormal state can be timely diagnosed. 2) The t-SNE technique, The K-means clustering and Z-score methods are exploited to detect and accurately locate the abnormal cell voltage.
What causes abnormality in a battery?
From the detection results and the voltage variation trajectories of cells, it can be concluded that the detected abnormality is a rapid descent of voltage caused by the battery pack that is discharged with a high rate current in a low voltage stage.
How is a battery pack fault diagnosed?
Wu et al. proposed a battery pack fault diagnosis method based on the combination of Hausdorff distance and modified Z-score. The faulty cell is detected by comparing the Hausdorff distance between the voltage curve of each battery and the median voltage curve in the moving window.
How to diagnose a faulty battery?
Fault diagnosis method based on the battery charging voltage ranking evolution. Using actual faulty vehicle data on a medium time scale for verification. Micro short circuit (MSC) in Li-ion batteries is characterized by slow development, and usually, MSC fault does not cause significant voltage fluctuations in the early stage.
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