681 results about "Battery terminal" patented technology

An apparatus may include a substrate. The apparatus may also include a first charger terminal disposed on the substrate and configured to apply a first electric potential to a first battery terminal of a battery. The apparatus may additionally include a second charger terminal disposed on the substrate and configured to apply a second electric potential to a second battery terminal of the battery. The apparatus may further include a barrier located on the substrate between the first charger terminal and the second charger terminal and configured to electrically isolate the first charger terminal and the second charger terminal by obstructing formation of a conductive path by way of a liquid disposed on the substrate.

An apparatus may include a substrate. The apparatus may also include a first charger terminal disposed on the substrate, including silver, and configured to apply a first electric potential to a first battery terminal of a battery. The apparatus may additionally include a second charger terminal disposed on the substrate, comprising silver, and configured to apply a second electric potential to a second battery terminal of the battery.

The invention relates to the technical field of cylindrical lithium ion battery production, and discloses a method for detecting insufficient welding of a cylindrical lithium ion battery, and the method comprises the following steps: S1, appearance inspection; s2, initial internal resistance benchmark test; s3, applying a short-time large-current pulse to the battery by using a pulse generator, simulating an actual load condition, and recording an instantaneous voltage drop and current response curve of the voltage of the battery end during the pulse period; s4, performing infrared thermal imaging identification and data processing; s5, learning the picture and establishing a model; s6, comparing the test picture and the data with the model; s7, dynamic internal resistance calculation; s8, cold solder joint query and sorting processing; and S9, retesting the electrical performance. According to the invention, the technologies of dynamic internal resistance measurement, nondestructive X-ray or ultrasonic detection, rate discharge test and the like are adopted, so that efficient, accurate and nondestructive detection of the cold solder joint of the cylindrical lithium ion battery is realized, and the production efficiency and the detection precision are remarkably improved.

The present inventions, in one aspect, are directed to techniques and / or circuitry to applying a charge pulse to the terminals of the battery during a charging operation, measure a plurality of voltages of the battery which are in response to the first charge pulse, determine a charge pulse voltage (CPV) of the battery, wherein the charge pulse voltage is a peak voltage which is in response to the first charge pulse, determine whether the CPV of the battery is within a predetermined range or greater than a predetermined upper limit value and adapt one or more characteristics of a charge packet if the CPV is outside the predetermined range or is greater than a predetermined upper limit value.

The invention belongs to the technical field of storage battery monitoring systems, and particularly relates to a storage battery on-line monitoring and remote capacity checking system, which comprises a sensing architecture layer for independently configuring a distributed integrated terminal module in each storage battery unit through a multi-physics field monitoring unit and monitoring the temperature, internal resistance and deformation of a storage battery pole; the analysis architecture layer is used for constructing a health evaluation module based on a fusion ampere-hour integral method, an internal resistance correction model and deep learning prediction to predict the health of the storage battery, and establishing an abnormal judgment strategy based on temperature gradient change and rapid capacity change quantity to carry out early warning on the safety of the storage battery; and the execution architecture layer integrates the three-level IGBT inversion module and the dynamic compensation module to carry out capacity checking on the storage battery, and configures an on-line on-load capacity checking mode and an off-line deep discharge mode. According to the invention, dangers and equipment power-off risks caused by a traditional capacity checking means can be eliminated, an automatic operation process is realized, the detection precision is high, and'monitoring-diagnosis-capacity checking 'closed-loop management is realized.

The invention discloses a low-complexity, high-precision and high-robustness battery state of charge estimation method and system, relates to the field of battery state of charge estimation, and aims to solve the problems of high cost, to-be-improved precision, poor robustness and the like of the existing battery state of charge estimation technology. According to the technical key points, firstly, a second-order equivalent circuit model is established through an off-line experiment, an off-line parameter identification means is adopted, the magnitude difference between to-be-identified model parameters and fitting voltage is reduced, and the fitting precision is improved; and fitting the relationship between the model parameters obtained by the off-line parameter identification and the SOC, and fitting an OCV-SOC relationship curve by using the third-order Gaussian after the fitting points are added. A battery end voltage and a current value measured by a sensor in real time are input into an ECM model for calculating an OCV value, sliding window filtering of variable weight distribution is carried out on the calculated OCV value to smooth a curve and reduce errors, a filtered result is fitted through an OCV-SOC relation curve to obtain an SOC value, and the SOC value is used as an observation value of subsequent Kalman filtering. A predicted value is calculated by using an ampere-hour integral method, and a current model parameter is fitted by using the priori value in combination with a relationship between the model parameter and the SOC. And finally, Kalman filtering is carried out on the two to obtain a posterior SOC value.

The invention relates to the technical field of relay detection, and particularly provides a relay fault detection circuit, method and system applied to an energy storage system, and the circuit comprises an energy storage system positive pole loop, an energy storage system negative pole loop, and a voltage collection circuit. The energy storage system cathode loop is that the cathode of the battery is connected with the cathode of the external circuit through a main cathode relay, and the voltage acquisition circuit comprises a battery end voltage transmitted to the main control chip through a voltage acquisition module and an external circuit end voltage transmitted to the main control chip through the voltage acquisition module. The main control chip sends control signals to the control ends of the main positive relay and the main negative relay and receives feedback signals of the state feedback end. By means of the optimized detection circuit, multiple independent voltage detection circuits and corresponding AD conversion units do not need to be additionally arranged, and the fault that the main positive relay and the main negative relay cannot be closed and the fault that the main positive relay and the main negative relay are adhered in the operation process can be accurately recognized.

A cylindrical battery, which includes an electrode assembly including a first electrode tab and a second electrode tab; a battery housing configured to accommodate the electrode assembly through an open portion and connected to the first electrode tab; a first current collecting plate having a support portion disposed on the electrode assembly, at least one first tab coupling portion extending from the support portion, and at least one housing coupling portion extending from an end of the first tab coupling portion; a second current collecting plate having a rim portion disposed on the electrode assembly, a second tab coupling portion extending inwardly from the rim portion, and a terminal coupling portion spaced apart from the second tab coupling portion; a cap plate configured to seal the open portion; and a battery terminal coupled with the terminal coupling portion.

The invention provides a lithium ion battery charge state estimation method and device, equipment and a medium, and the method comprises the steps: obtaining a battery end voltage measurement value and a platform interval query table collected at a current moment when a charge state estimation request for a to-be-estimated battery is received, and determining a prior charge state estimation value; determining a platform interval attribute result corresponding to the priori state-of-charge estimation value; adjusting an observation noise covariance matrix based on the platform interval attribute result, the real-time slope of the open-circuit voltage-state-of-charge relation curve at the priori state-of-charge estimation value and the battery working current change rate; and updating the Kalman gain based on the adjusted observation noise covariance matrix, correcting the priori state-of-charge estimated value by using the updated Kalman gain to obtain the target state-of-charge estimated value at the current moment, and obtaining the target state-of-charge estimated value at the current moment through platform interval identification and a multi-parameter adaptive adjustment mechanism. And the estimation precision and stability of the state of charge of the lithium ion battery are improved.

The utility model discloses a tool for polishing and oiling a storage battery terminal, which comprises a driving motor, a mounting seat, a grinding wheel, a grinding wheel, a grinding wheel, a grinding wheel, a grinding wheel and a grinding wheel, wherein the mounting seat is fixedly connected to an output shaft of the driving motor; the pneumatic clamping jaw is fixed to the mounting base, and a polishing brush is detachably connected to a jaw body of the pneumatic clamping jaw. The oiling valve is fixed below the mounting seat and has an avoiding distance with the polishing brush on the claw body, an avoiding hole for a battery terminal to enter is formed in the middle of the bottom side of the oiling valve, a plurality of valve element holes are formed in a valve body of the oiling valve, one end of each valve element hole is communicated with the avoiding hole, a valve element is axially and slidably connected into the valve element hole, and one end, close to the avoiding hole, of the valve element is an oiling end; the oil way hole communicated with the side wall of the valve element hole is formed in the valve body, the battery terminal supports the valve element and promotes the valve element to move in the axial direction, the movement of the valve element controls the communication relation between the oil way hole and the receding hole, the anti-oxidation oil in the oil way hole wets the oiling end and completes the oiling process of the battery terminal, and the oiling device is integrated in design and high in machining efficiency.

The invention relates to the technical field of energy storage battery health state evaluation, and provides a low-voltage station area battery capacity calibration and health factor extraction method, which comprises the following steps: acquiring battery end voltage, current, temperature and SOC data in real time; a complete charge-discharge cycle is automatically divided according to a preset rule, and the equivalent discharge capacity is calculated through an ampere-hour integral; constructing an exponential type working condition correction factor based on the circulating temperature and the root-mean-square current to correct the capacity, and obtaining a dynamic calibration capacity in a sliding window by adopting exponential weight or weighted least square fitting; meanwhile, multi-dimensional health factors are extracted from voltage, current, temperature and SOC signals, and comprehensive health characterization is formed through adaptive weighted fusion in a data driving mode. According to the method, online and dynamic capacity estimation and multi-dimensional health assessment of the energy storage battery in the transformer area under the complex and unsteady working condition are achieved, the capacity calibration precision and the life prediction reliability are remarkably improved, and intelligent operation and maintenance and risk early warning are facilitated.

In a described example, a system includes a bus, a primary coil, first battery terminals, and second battery terminals. A first circuit is coupled between the bus and the primary coil. A first secondary coil is DC-isolated from the primary coil. A second circuit is coupled between the first secondary coil and the first battery terminals. A second secondary coil is DC-isolated from the primary coil. A third circuit is coupled between the second secondary coil and the second battery terminals. A controller is configurable to control the second circuit to transfer energy from the first battery terminals through the first secondary coil to the primary coil and control the first and third circuits to transfer energy from the primary coil to the second secondary coil and provide energy to the second battery terminals.

To provide a battery module which has a space-saving configuration for connecting battery cells to each other, and which can be manufactured at a low cost.SOLUTION: In a battery module 20, a plurality of battery cells 1 of a battery stack 11 are laminated in such a manner that one of positive and negative cell terminals 6, 7 is aligned in a lamination direction at one end Y1 side in a width direction, while the other one of the cell terminals, which is different from the former one, is aligned in the lamination direction at the other end Y2 side opposite to the one end Y1 in the width direction. The battery module 20 has: an adjacent connection bus bar 31 which connects cell terminals 6, 7 adjacent in the lamination direction; and a jumper connection bus bar 35 which connects cell terminals 6, 7 aligned on both sides, in the lamination direction, of the cell terminals 6, 7 connected by the adjacent connection bus bar 31. The positions, in the width direction, of connection points between the cell terminals 6, 7 and a bus bar 30 are aligned in the lamination direction at the one end Y1 side and the other end Y2 side in the width direction.SELECTED DRAWING: Figure 2

A battery system includes a battery module; a cell monitor controller (CMC) including a battery monitoring integrated circuit (BMIC) that monitors a cell voltage of each of the plurality of battery cells based on a signal received from the plurality of input terminals; and a branch board including a plurality of wirings that provide a power path connecting the plurality of battery terminals and the plurality of input terminals of the CMC, and a plurality of switches that have one end connected to one of each of a plurality of adjacent two wirings included in the plurality of wirings and the other end connected to the other of each of the two wirings.

The present invention relates to a battery module (1) for a high-voltage battery of an electrically or partially electrically powered motor vehicle, wherein the battery module (1) comprises at least one first battery cell (10) and at least one second battery cell (20), wherein each battery cell (10, 20) has a first cell terminal (11) with a first polarity and a second cell terminal (21) with a second polarity, wherein the battery module (1) comprises a contact carrier plate (2), wherein the contact carrier plate (2) has at least one support rib (3) and adjacent to the support rib (3) a first through-slot (4) and a second through-slot (5), wherein one of the cell terminals (11, 21) of the first battery cell (10) passes through the first through-slot (4) and is bent towards the support rib (3), wherein one of the cell terminals (11,21) of the second battery cell (20) passes through the second through-slot (5) and is bent towards the support rib (3), so that one cell terminal (11, 21) of the first battery cell (10) and one cell terminal (11, 21) of the second battery cell (20) overlap on a contacting side of the contacting carrier plate (2) facing away from the multiple battery cells (10, 20), wherein the battery module (1) has a heat buffer element (50).

A power tool includes a housing, an electric motor disposed within the housing, a first printed circuit board assembly configured to selectively supply electric current to the electric motor, causing the electric motor to activate and drive a tool element, and a battery receptacle configured to support a removable battery pack. The battery receptacle has a battery terminal block electrically connected to the battery pack to supply electrical current to the first printed circuit board assembly. The power tool further includes a second printed circuit board assembly electrically connected between the first printed circuit board assembly and the battery terminal block. The second printed circuit board assembly has a fuse and a thermistor configured to detect a temperature of the fuse.

The present invention relates to a battery module (1) for a high-voltage battery of an electrically or partially electrically powered motor vehicle, wherein the battery module (1) comprises at least one first battery cell (10) and at least one second battery cell (20), wherein each battery cell (10, 20) has a first cell terminal (11) with a first polarity and a second cell terminal (21) with a second polarity, wherein the battery module (1) comprises a contact carrier plate, wherein the contact carrier plate has at least one support rib (3) and adjacent to the support rib (3) a first through-slot (4) and a second through-slot (5), wherein one of the cell terminals (11, 21) of the first battery cell (10) passes through the first through-slot (4) and is bent towards the support rib (3), wherein one of the cell terminals (11,21) of the second battery cell (20) passes through the second through-slot (5) and is bent towards the support rib (3), such that one cell terminal (11, 21) of the first battery cell (10) and one cell terminal (11, 21) of the second battery cell (20) overlap on a contacting side of the contacting carrier plate (2) facing away from the battery cells (10, 20), wherein one cell terminal (11, 21) of the first battery cell (10) and one cell terminal (11, 21) of the second battery cell (20) are electrically connected to each other in the area of ​​their overlap, wherein the support rib (3) has a heat buffer element (50).

A battery charger and a method of operating a battery charger. The charger may include a housing defining an air inlet and an air outlet; a charging circuit operable to output a charging current to charge a battery couplable to the battery charger; a tubular heat sink; and a fan operable to cause air flow from the air inlet to the air outlet and along the heat sink. The charger may include a first switch operable to electrically connect the charging circuit to a power source when the battery engages the charger; and a second switch operable to electrically connect the charging circuit to a battery terminal after the charger terminal is electrically connected to the battery terminal. The charging current or a fan speed may be adjusted based on at least one of the temperature of the charger or a temperature of the battery.

The invention discloses a thermoelectric coordination regulation system for a new and old battery mixing station, and relates to the technical field of thermoelectric coordination regulation, and the system comprises a data collection module which collects the surface contact temperature data of a battery, the instantaneous fluctuation data of the terminal voltage of the battery and the state of charge in the new and old battery mixing station in real time; the early warning analysis module is used for dynamically analyzing the battery surface contact temperature data and the battery end voltage instantaneous fluctuation data in the continuous sliding time window to obtain a fractal dimension standard exceeding early warning signal; the risk modeling module is used for constructing a three-dimensional target vector by adopting a multi-target cooperative computing framework based on the fractal dimension standard exceeding early warning signal, the battery surface contact temperature data, the battery end voltage instantaneous fluctuation data and the state of charge; the decision regulation and control module is used for performing multi-target decision on the three-dimensional target vector through a tabu search algorithm to generate three types of regulation and control instruction sets; the taboo search mechanism breaks through the dimension coupling constraint of the multi-objective decision, and achieves the dynamic optimization of the thermal-electric regulation and control strategy.

Embodiments described herein relate to electrochemical cells and / or electrochemical cell assemblies (e.g., stacks) or systems with folded tabs, and methods of assembling and sealing the same. In some aspects, an electrochemical cell can include a first electrode, a second electrode different than the first electrode, a separator between the first electrode and the second electrode, and an electrode tab electrically coupled to at least one of the first electrode or the second electrode, at least a portion of the electrode tab folded to form a folded portion. In some aspects, a method can include loading an electrode stack into a stack pouch bottom, folding cell terminals of the electrode stack over an edge of the stack pouch bottom, applying a stack pouch top to the electrode stack opposite of the stack pouch bottom, and sealing the folded cell terminals between the stack pouch bottom and the stack pouch top.

The utility model provides a storage battery pole rush-repair training device, a power supply of the device supplies power to two electrodes of a storage battery body through a positive electrode and a negative electrode, so that the storage battery body has voltage, a pole mold of a rush-repair assembly is sleeved on a damaged pole, one end of a heat conduction assembly is connected with an undamaged pole, and the other end of the heat conduction assembly is connected with a tin bar. The tin bar is connected with the damaged pole, so that the two poles of the storage battery are short-circuited through the heat conduction assembly and the tin bar, the short circuit can generate heat to melt the tin bar, the melted tin falls into the pole mold, and the pole is repaired. When the pole is damaged for multiple times, the training requirement of multiple persons for long-time use can be met through the storage battery pole emergency repair training device, and the teaching quality is effectively improved.

The invention relates to a DC / DC converter (1) for charging a battery (4) in a boost mode, wherein the DC / DC converter (1) has a primary side (P) and a secondary side (S), wherein on the primary side (P) and on the secondary side (S) a capacitance (CX_P, CX_S) is electrically coupled between a respective positive potential (HV+1, HV+2) and a respective negative potential (HV-1, HV-2), wherein - the primary side (P) and the secondary side (S) each have at least two half-bridges (HB1, HB2, HB3, HB4), each with a high-side switch designed as a semiconductor switch (S1, S3, S5, S7, D) and a low-side switch designed as a semiconductor switch (S2, S4, S6, S8), - LC resonant circuits (2.1, 2.2) designed as series resonant circuits are arranged between center taps of the half-bridges (HB1, HB2) on the primary side (P) and center taps of the half-bridges (HB3, HB4) on the secondary side (S), wherein exactly one of the potentials (HV+1, HV-1) of the primary side (P) is galvanically connected to the opposite pole potential (HV-2, HV+2) of the secondary side (S), wherein the other potential (HV-1, HV+1) of the primary side (P) is galvanically connected to a same pole battery terminal of the battery (4).

Described herein are battery modules comprising immersion-cooled prismatic battery cells and methods of fabricating thereof. A battery module comprises prismatic battery cells that are stacked along the primary module axis. The module also comprises top, bottom, and side covers and two end plates, collectively enclosing these battery cells. Each cover forms two fluid channels, both fluidically open to the prismatic battery cells. Furthermore, the module comprises bus bars that interconnect the cell terminals and protrude into the fluid channels formed by the top cover. One end plate comprises two fluid ports for connecting to a thermal management system. Each port is fluidically coupled to one fluid channel, formed by the top cover, and one fluid channel, formed by the bottom cover. The other end plate fluidically couples the two fluid channels, formed by the top cover, and, separately, the two fluid channels, formed by the bottom cover.

The present invention relates to a method for detecting lithium deposition at a negative electrode of a low-temperature fast-charge lithium battery based on an alternating current impedance spectrum, and belongs to the technical field of lithium batteries. The method comprises the following steps: superimposing signals at different frequency points to form a fast-sweep multi-sinusoidal synthesis signal, inputting the signal into a programmable power supply to generate an excitation current, using a Hall sensor to implement excitation current signal transmission, and measuring the transmitted current signal and battery terminal voltage through a data acquisition card; using the excitation current generated by the multi-sinusoidal synthesis signal to charge the battery, measuring the battery voltage and current signals, intercepting finite-length voltage and current signals through a window function to perform fast Fourier transform, and obtaining the battery alternating current impedance spectrum during the battery charging process; coupling a battery model of the alternating current impedance characteristics; and using a model-driven or data-driven method to establish a mapping relationship between the alternating current impedance spectrum and the severity of lithium deposition, and judging the severity of lithium deposition by analyzing the change trend of the alternating current impedance spectrum, thereby realizing lithium deposition detection.

The invention relates to a battery module (1) comprising: a plurality of individual battery cells (2); and cell connectors (3) which electrically connect a battery terminal (6) of one of the individual battery cells (2) to a battery terminal (7) of an adjacent individual battery cell (2), wherein each of the individual battery cells (2) comprises, in its cell housing, a venting area (5) which is weakened by means of a predetermined breaking point (4) and in which one of the battery terminals (6) is arranged. The battery module according to the invention is characterised in that at least one flow-guiding element (12) is provided which surrounds the venting area (5) at least around part of its periphery and which is designed to block or at least disperse venting gases from adjacent individual battery cells (2), wherein the cell connector (3) is guided to the battery terminal (6) arranged in the venting area (5) through the portion of the periphery that is free from the flow-guiding element(s) (12).

A battery pack may include a housing including a support portion connectable to and supportable by an electrical device, the support portion defining a channel operable to receive a projection on the electrical device, the support portion including a plastic material molded to define the channel, and a metal material molded in the plastic material, the metal material defining a C-shaped portion around the channel. A battery pack may include a plurality of battery cells supported by the housing. A battery pack may include a battery terminal electrically connected to the plurality of battery cells and connectable to a terminal of the electrical device.

The invention relates to the technical field of battery management systems, in particular to an SOC correction method and system based on polar coordinates, a vehicle and electronic equipment, and the method comprises the steps: building a terminal voltage estimation model; collecting the battery terminal voltage, the battery current, the battery temperature and the sampling point time of the battery under the N sampling points, and calculating the battery charge state and the battery health state corresponding to each sampling point; estimating a battery terminal voltage corresponding to each sampling point through the terminal voltage calculation model; respectively converting the actually acquired mapping relation between the battery end voltage and the battery state of charge and the estimated mapping relation between the battery end voltage and the battery state of charge into a polar coordinate system, and calculating the polar radius and polar angle of each sampling point under the polar coordinate system; solving an optimal battery charge state at a preset moment, and calculating a first battery charge state; and correcting a second battery state of charge based on the first battery state of charge. According to the invention, the state of charge of the battery can be effectively calibrated.

The invention provides a method for estimating the state of charge of a marine lithium iron phosphate battery based on model compensation and improved Kalman filtering. The method comprises the following steps: acquiring voltage and current data of the marine lithium iron phosphate battery; constructing a novel compensation model taking an improved Play hysteresis operator as a core, and quantifying the hysteresis voltage of the battery; on the basis of a second-order RC equivalent circuit model, hysteresis voltage is used as voltage input of an ideal voltage source in the battery and is injected into model internal resistance and capacitance parameter values obtained through identification at different temperatures, and an equivalent circuit model considering hysteresis at different temperatures is formed; performing parameter identification on the equivalent circuit model with hysteresis compensation by adopting an adaptive forgetting factor recursive least square method, and adaptively optimizing a forgetting factor and an initial parameter value, so that an error between a terminal voltage value simulated by the equivalent circuit model and an actual voltage value is minimum; and carrying out joint estimation on the battery end voltage and the SOC by adopting an adaptive square root unscented Kalman filtering algorithm, so that the error of the end voltage is minimum, and an estimated value of the battery SOC is obtained.

The present invention discloses an automatic bending device for the tabs of a battery pole group, and relates to the technical field of battery production. The present invention includes a bending mechanism, which includes a frame, the inner wall of the frame is connected to side plates in parallel, and a plurality of bending assemblies are rotatably connected between the two side plates; each bending assembly includes two pairs of bending rods and support rods, and a bending rod and a support rod are arranged in pairs, and the bending rods are connected to a pressure plate; the two bending rods in each bending assembly are connected to a driving mechanism, which is used to drive the pressure plate to bend the tabs through the bending rods, and support the tabs through the support rods; one of the side plates is provided with a first tab avoidance groove, and the other side plate is provided with a second tab avoidance groove adapted to the shape of the tab after bending. The present invention solves the problem of uneven bending of the existing tabs, which affects product quality, by rotating the bending rods in the bending assembly, using the pressure plate to bend the tabs, and supporting the tabs through the support rods.

The invention discloses an inventory battery state monitoring method and device, electronic equipment and a storage medium, and relates to the power supply and matching technical field or other related technical field, and the method comprises the steps that a battery terminal collects the state data of the battery terminal based on a low power consumption monitoring mechanism, and uploads the state data to a Bluetooth gateway; the Bluetooth gateway performs data conversion and uploads a transmission protocol data packet to a cloud platform; and the cloud platform analyzes the transmission protocol data packet to obtain battery state data, inputs the battery state data to the state detection model, carries out abnormal state identification and state trend prediction on each battery terminal through the state detection model, generates alarm information according to identification and prediction conditions, and sends the alarm information to the operation and maintenance terminal. According to the invention, the technical problems of low monitoring efficiency and high loss due to the fact that battery monitoring depends on wired connection for one-to-one monitoring in the prior art are solved.