170 results about "Faulty cell" patented technology

Systems, apparatuses and methods for detecting internal cell faults using online and real-time sensing techniques, and providing an accurate and reliable early warning for the incoming failure of battery cells hours or days prior to failure. A system is configured to perform real-time and direct measurement of battery cell parameters of temperature, voltage, and AC impedance through online sensing. These parameters may be simultaneously processed using advanced probabilistic and / or fuzzy logic-based algorithms to provide an early warning for the incoming failure of battery cells in a battery pack. This technology may safeguard the LIB battery packs while allowing them to operate at or near 100% capacity in both transportation and stationary applications.

Various systems and methods for determining potential battery failure are disclosed. For example, some embodiments of the present invention provide battery systems that include a battery, an embedded processor and a computer readable medium. The computer readable medium includes instructions executable by the embedded processor to measure at least one characteristic of the battery; to calculate a rate of change of internal impedance of the battery based at least in part on the at least one characteristic of the battery; and to determine a potential failure condition based on the rate of change of internal impedance of the battery.

The invention discloses a power battery fault diagnosis method and system. The method comprises the following steps: establishing a voltage matrix of a battery cell, extracting a sub-matrix interval of the voltage matrix, establishing a median matrix according to the median of the battery cell voltage in the sub-matrix interval, establishing a voltage deviation matrix according to the sub-matrix interval and the median matrix, calculating a voltage deviation increment according to a voltage deviation value in the voltage deviation matrix, establishing a voltage deviation increment matrix, accumulating the number of times that the voltage deviation value in the voltage deviation matrix exceeds a set interval, establishing a voltage deviation accumulation number matrix, establishing a jointmatrix, performing two-dimensional clustering on the established joint matrix by adopting a DBSCAN density clustering method, and judging whether the battery cell has a fault or not according to a clustering result. According to the power battery fault diagnosis method and system provided by the invention, the fault judgment efficiency of the battery cell can be improved, and the judgment accuracycan be improved.

The present systems include a memory module containing a plurality of RAM chips, typically DRAM, and a memory buffer arranged to buffer data between the DRAM and a host controller. The memory buffer includes an error detection and correction circuit arranged to ensure the integrity of the stored data words. One way in which this may be accomplished is by computing parity bits for each data word and storing them in parallel with each data word. The error detection and correction circuit can be arranged to detect and correct single errors, or multi-errors if the host controller includes its own error detection and correction circuit. Alternatively, the locations of faulty storage cells can be determined and stored in an address match table, which is then used to control multiplexers that direct data around the faulty cells, to redundant DRAM chips in one embodiment or to embedded SRAM in another.

The invention discloses a method and a device for monitoring and maintaining faults of a storage battery. The method comprises the following steps: detecting the capacity and charging and discharging and temperature parameters of a single storage battery; judging the fault type of the single storage battery according to the parameters; and alarming and processing according to a fault result. The method is designed from the angle of on-line maintenance of the storage battery, the influence of the charging mode of a switch power supply on the performances of the storage battery and the relationship between the charging parameter of the storage battery and the capacity of the battery are figured out, a technology for on-line maintaining the possibly legged-behind or already legged-behind batteries is provided, and a method for adjusting the charging parameter of the switch power supply at different phases in the network operation process of the storage battery is introduced in detail, sothat the performance of a battery pack is improved and the service life of the storage battery is prolonged, and the provided method and device are realized by a more-mature technical scheme with a low cost.

An embodiment of the invention discloses a method and a device for detecting micro short circuit of a battery. The method comprises the steps of: acquiring a target initial battery parameter value ofa target battery at an initial moment, and determining a reference initial battery parameter value of a virtual reference battery at the initial moment, wherein a response of the virtual reference battery is the same as a response of the target battery under the same excitation condition; acquiring a target battery parameter value of the target battery at a specified moment; determining a reference battery parameter value of the virtual reference battery at the specified moment according to the target battery parameter value and the reference initial battery parameters value; and calculating adifference value between the target battery parameter value and the reference battery parameter value, and determining whether short circuit occurs in the target battery according to the difference value. The method and the device disclosed by the invention have the advantages of improving precision of battery micro short circuit detection, enhancing the applicability of battery micro short circuit detection, and reducing the misjudgment rate of battery failures.

A semiconductor integrated circuit includes a memory which has redundant lines for repair in both a column direction and a row direction. A test pattern generating section generates a specific test pattern for the memory. A comparing section reads an output from the memory to judge whether or not a fault cell exists in the memory and outputs a signal which shows existence or nonexistence of a faulty cell. The circuit includes a first data storage section, which operates in a first test mode for a test of the memory and a second test mode for a scan test, and a second data storage section which receives an output signal of the comparing section to store a state of presence or absence of a failure corresponding to the existence or nonexistence of the faulty cell. A repair judging section receives an input to the first data storage section and an output of retained contents in the first data storage section and judges that the memory is repairable. When the second data storage section is in a state where the failure exists, the first data storage section holds the data retained in the first data storage section.

An enclosed two-part computer controlled cyclical and sequential through-flow conveying, usage and metering System (200) is disclosed, for use in the electric vehicle motive power provision industries, for said two-part enclosed System to sequentially convey small-volume rechargeable Cell-Modules by sequential conveyor-means in a metered through-flow sequential conveying manner within said two-part System wherein the first part is a Stationary Part that includes a specially manufactured Cell-Module dispensing Bowser and a specially manufactured Cell-Module Charging-Bay and wherein the second part is a Movable Part that includes a specially manufactured or specially adapted Cell-Module powered electric Vehicle having a specially manufactured Cell-Module Chamber installed within.A Nozzle (3) and a Portal (4) respectively provide means for the Stationary Part and the Movable Part to exchange a choosable plurality of small-volume rechargeable Cell-Modules (100) and (500).A System (200) provides a succinct fully enclosed matingly-co-operative interconnection means for the System (200) to sequentially dispense Charged Cell-Modules and remove depleted Cell-Modules. The System also removes faulty Cell-Modules and if necessary extinguishes, and isolates for fire safety purposes, over-heating, deformed, or ignited Cell-Modules.The invention provides means that parallel, mimic or improve upon the metered bowser dispensing manner by which a choosable sequential plurality of small volumes of fossil fuel are sequentially delivered to a conventional fossil fuel vehicle by a dispensing bowser at a conventional fuel Service Station facility. The invention also provides optional means for Cell-Modules to be recharged in situ by use of a specially manufactured charger.

A circuit and method for detecting faulty cells in a semiconductor memory device and a method therefor are provided. The circuit includes a memory cell array which includes a plurality of memory blocks, each of which includes a plurality of memory cells addressed corresponding to predetermined memory addresses and a plurality of faulty cell detectors corresponding to the plurality of memory blocks. The plurality of faulty cell detectors compare currents generated in the memory blocks to a predetermined reference current and detect whether addressed memory cells are faulty. It is possible to check whether the addressed memory cells are faulty by detecting the currents which flow through the plurality of memory blocks by the memory addresses. Therefore, it is possible to correctly detect the positions of faulty memory cells. Also, it is possible to reduce the number of pins since, data indicating whether the memory cells are faulty is output through data input and output lines in response to a test selection signal. Also, it is possible to prevent the operation speed of a chip from decreasing due to the current detectors during a normal operation since the current detectors corresponding to the memory blocks are bypassed in response to the test selection signal during the normal operation.

The invention discloses an energy storage power station battery compartment battery fault pre-judgment and positioning method, which comprises the steps of conducting single battery health degree analysis, battery performance change trend prediction and battery fault accurate pre-judgment and positioning, and obtaining battery operation parameter upper and lower limit thresholds and a battery health state in a current state by analyzing the single battery health degree; and predicting a battery performance change trend in a future period of time based on historical data in the past period of time, and pre-judging and positioning possible faults in the future in combination with upper and lower limit thresholds. Meanwhile, if it is detected that a certain or some properties of a single battery, a battery pack or a battery cluster may change suddenly in an extremely short time, possible faults in a short time can be predicted through a battery fault accurate pre-judgment and positioning function, and corresponding faults are positioned and identified through a fault expert database. Through comprehensive implementation of the method, the operation and maintenance technical support level and the system safety and stability level of the energy storage power station can be obviously improved.

The present systems include a memory module containing a plurality of RAM chips, typically DRAM, and a memory buffer arranged to buffer data between the DRAM and a host controller. The memory buffer includes an error detection and correction circuit arranged to ensure the integrity of the stored data words. One way in which this may be accomplished is by computing parity bits for each data word and storing them in parallel with each data word. The error detection and correction circuit can be arranged to detect and correct single errors, or multi-errors if the host controller includes its own error detection and correction circuit. Alternatively, the locations of faulty storage cells can be determined and stored in an address match table, which is then used to control multiplexers that direct data around the faulty cells, to redundant DRAM chips in one embodiment or to embedded SRAM in another.

This invention belongs to the lithium-ion battery field, and in particular, to a safety device of a lithium-ion battery. The safety device of a lithium-ion battery comprises a top cover plate, a first electrode post, a second electrode post, an explosion-proof valve, and a conductive plate, wherein the first electrode post, the second electrode post, and the explosion-proof valve are respectively positioned on the top cover plate; the first electrode post is electrically connected to the top cover plate; the second electrode post is assembled in an insulated way to the top cover plate; and the second electrode post is electrically connected to the conductive plate; where an air-pressured flip plate is further positioned on the top cover plate, and a cut is positioned on the air-pressured flip plate. The device may be used to avoid a safety problem caused by overcharging when an accident occurs on a cell, and release energy of the faulty cell through an outer short-circuit, thereby avoiding a more serious safety accident and ensuring safety performance of the battery.

The invention discloses a method for implementing holistic information management in a communication base station. The method comprises the following steps of: acquiring environmental information in the base station; acquiring related security information in the base station; acquiring energy consumption information of the base station; acquiring related information of an air-conditioning system of the base station; acquiring the operating state of energy-saving equipment, acquiring electrical energy, analyzing power saving quantity and acquiring alarm processing information; acquiring video information; uploading the acquired information to a server of an upper computer of a base station information system through a network, and performing asset management analysis, dynamic ring monitoring analysis, energy consumption management analysis, air-conditioning energy-saving equipment operating analysis and base station energy-saving data analysis on the acquired data, wherein the acquired data can be compatible with other dynamic ring systems; and sending related instructions to the base station through the network, thus realizing acquisition and monitoring of dynamic rings. The environmental information in the base station comprises information of temperature and humidity inside and outside the base station and smoke alarm, water immersion alarm, power failure, high and low voltage, default phase, total electrical degree, battery fault, battery low voltage and electricity stealing.

A memory region can durably self-identify as being faulty when read. Information that would have been assigned to the faulty memory region can be assigned to another of that sized region in memory using a replacement encoding technique. For phase change memory, at least two fault states can be provided for durably self-identifying a faulty memory region; one state at a highest resistance range and the other state at a lowest resistance range. Replacement cells can be used to shift or assign data when a self-identifying memory fault is present. A memory controller and memory module, alone or in combination may manage replacement cell use and facilitate driving a newly discovered faulty cell to a fault state if the faulty cell is not already at the fault state.

Disclosed is a build-in self-diagnosis and repair method and apparatus in a memory with syndrome identification. It applies a fail-pattern identification and a syndrome-format structure to identify at least one type of faulty syndrome in the memory during a memory testing, then generates and exports fault syndrome information associated with the corresponding faulty syndrome. According to the fault syndrome information, the method applies a redundancy analysis algorithm, allocates spare memory elements and repairs the faulty cells in the memory. The syndrome-format structure respectively applies single-faulty-word-syndrome format, faulty-row-segment-syndrome format, and faulty-column-segment-syndrome format for different faulty syndromes, such as faulty row segments and single faulty words, faulty column segments and single faulty words, all of single faulty words, faulty row segments and faulty column segments, and so on.

The present subject refers to a method for battery fault diagnosis and prevention of hazardous conditions. The method comprises determining a plurality of parameters defined as one or more of current, voltage, or state of charge during operation of a battery-powered device. Further, one or more likelihood ratios related to malfunctioning of the battery are evaluated based on determined parameters. At least one of: a current battery-state or a type of current battery state are determined based on the one or more likelihood ratios as evaluated.

A memory address remapping architecture is applied to execute an address remapping method for repairing a main memory. A valid flag and an essential flag in a TCAM corresponding to at least one subcube address in a spare memory are initialized, and the main memory is checked to find out some faulty cell addresses. The Hamming distance between the subcube address and the faulty cell address is calculated, and the faulty cell address is merged into the subcube address by a masked bits concentrator when the Hamming distance is not larger than an address-width degree of the subcube address and the merged number of the subcube address is not larger than a threshold value.

The invention provides a battery fault detection method and device, and the method comprises the steps: obtaining the impedance spectrum data of each battery in a battery pack, and enabling the impedance spectrum data to comprise the impedance of the battery at a plurality of frequencies; dRT analysis is carried out on the impedance spectrum data of each battery, parameter information of each battery is determined, and the parameter information comprises at least one relaxation time and resistance corresponding to each relaxation time; and when the deviation condition of the first parameter information of the first battery and the second parameter information of the second battery in the plurality of batteries meets a preset fault condition, determining that at least one battery in the battery pack has a fault. By comparing the parameter information of the plurality of batteries, or comparing the current parameter information of the batteries with the historical parameter information, whether the batteries in the battery pack break down or not is determined according to the deviation condition of the parameter information, and the early fault of the batteries can be accurately identified. Furthermore, the fault type and the fault severity of the battery can be judged.

The invention discloses a power battery pack fault diagnosis method based on an improved Grubbs criterion and a battery electrothermal coupling model. The power battery pack fault diagnosis method comprises the following steps: collecting voltage signals and surface temperature signals of each single battery in a power battery pack; screening out abnormal data by utilizing an improved Grubbs criterion; determining the type and model of a single battery in the power battery pack, and building a battery electro-thermal coupling model; performing battery fault simulation based on the battery electro-thermal coupling model, and collecting output of the battery electro-thermal coupling model under the simulated fault condition; and comparing the screened abnormal data with the data acquired under the simulation condition, and determining the fault type of the battery pack. According to the method, the dynamic characteristics of the power battery are described by adopting the electro-thermalcoupling model of the battery, the electrical characteristics and the thermal characteristics of the battery are comprehensively considered, the battery fault situation simulated on the basis of themodel better conforms to the actual situation of battery faults, and the accuracy of a fault diagnosis conclusion made by combining the model is higher.

Disclosed is a semiconductor storage device in which a cell array including a plurality of cells in need of refresh for data retention includes the redundancy area, which has a plurality of redundant cells for replacing faulty cells of a normal area within the cell array. When the redundancy area is tested, a refresh counter circuit for generating and outputting refresh addresses rearranges the address in such a manner that a row address of the redundancy area is substantially reduced and placed on a lower-order bit side inclusive of the LSB of the counter.

In order to achieve a redundant repair for a memory using a BIST, a semiconductor integrated circuit which can suppress an increase in circuit area for redundant repair and circuit area for scan test, and an test method thereof are provided. It comprises: a memory 104, which has a redundant line for repair in a Column direction; a test pattern generating section 101; a comparing section 102, which judges whether a faulty cell exists in the memory 104 or not, a first data storage section 105, which during an test of the memory 104, retrieves a signal inputted into the memory 104 from the test pattern generating section 101 and a pass / fail judgment signal for every bit from the comparing section 102, and during an test of a peripheral logic of the memory, is used for observing an input signal into the memory 104; a second data storage section 106, which shows a state of the presence or absence of a failure; and a repair judging section 107, wherein data of the first data storage section 105 is held by the second data storage section 106.

A repair information providing device in an integrated circuit including a plurality of memory blocks includes a plurality of faulty cell address registers connected to the memory blocks, respectively, a repair information storage block configured to store repair information including an address of a faulty cell and a memory index indicating a memory block having the faulty cell, a repair information control block configured to read the repair information from the repair information storage block, transfer the address of the faulty cell included in the repair information to the respective faulty cell address registers, and generate a memory block selection signal based on the memory index included in the repair information, and a clock gating block configured to receive a clock signal, and selectively transfer the clock signal to one of the faulty cell address registers connected to the memory block having the faulty cell in response to receiving the memory block selection signal.

The invention provides a battery internal resistance prediction and fault early warning method based on LSTM. The method comprises the following steps: S1, classifying battery internal resistance change reasons; S2, selecting battery internal resistance influence factor parameters of n batteries as input of a battery internal resistance prediction model based on a long-short term memory method neural network; S3, constructing a battery internal resistance prediction model based on a long-short term memory method neural network; S4, obtaining current battery internal resistance data and a battery internal resistance change rate according to the battery internal resistance influence factor parameters of the current battery; S5, setting a battery internal resistance threshold value, a batteryinternal resistance change rate threshold value and a charging and discharging frequency interval; and S6, generating battery fault early warning information according to the information of the previous steps. The method has the advantages that the battery internal resistance is predicted through the battery internal resistance prediction model based on the long-short term memory method neural network, the battery fault can be positioned more clearly and quickly, the tedious process of blind battery inspection by maintenance personnel is simplified, and a foundation is laid for battery faultearly warning.

The present invention may provide a circuit generally having a plurality of addressable memory cells and an access control circuit. The access control circuit may be configured to intercept an access to a faulty cell of the plurality of addressable memory cells. The access control circuit may be further configured to redirect the access to a spare cell of the plurality of addressable memory cells.

A faulty cell detection device and a faulty cell detection method are provided for detecting a faulty cell of a battery pack using a current sensor. The device may include a current sensor including a first current sensor configured to measure a current of a battery pack including the battery module, and a second current sensor configured to measure a current of a battery cell among battery cells in the battery module. The device may also include a faulty cell detector configured to detect occurrence of the faulty cell based on the measured current of the battery pack and the measured current of the battery cell.

The invention discloses a method for detecting user network access quality. The method comprises the following steps: counting the flow of a cell within continuous T+1 days, wherein T is a preset statistical cycle; judging whether the cell is a faulty cell according to the flow of the cell within continuous T+1 days; when it is judged that the cell is the faulty cell, screening a resident user from the users of the faulty cell; and counting the network access indexes of the resident user, and screening the user with worse network access quality from the resident user. Meanwhile, the invention further discloses an apparatus for detecting the user network access quality.

The invention discloses a storage battery fault diagnosis method and device based on fault injection deep learning, and the method comprises the steps: enabling each storage battery in a to-be-detected storage battery pack to be connected with a storage battery fault diagnosis device, then, adopting the storage battery fault diagnosis device to detect battery performance parameters of each storage battery in the to-be-detected storage battery pack in the charging and discharging process, and finally, inputting the battery performance parameters of each storage battery in the charging and discharging process into the deep learning model based on fault injection; and determining whether each storage battery has a fault or not and the fault type of the storage battery with the fault, wherein the deep learning model based on fault injection is generated after deep learning is carried out on the training storage battery pack. According to the storage battery fault diagnosis method and device based on fault injection deep learning disclosed by the embodiment of the invention, the diagnosis efficiency of the storage battery of the power distribution network can be improved.

A faulty cell detection device and a faulty cell detection method are provided for detecting a faulty cell of a battery pack using a current sensor. The device may include a current sensor including a first current sensor configured to measure a current of a battery pack including the battery module, and a second current sensor configured to measure a current of a battery cell among battery cells in the battery module. The device may also include a faulty cell detector configured to detect occurrence of the faulty cell based on the measured current of the battery pack and the measured current of the battery cell.