319 results about "Battery terminal" patented technology

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.

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 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 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.

One aspect of the present invention relates to a method (100) for managing the available state of charge (SOCDisp) of an aircraft battery, the method comprising the steps of: - obtaining (110) a first intermediate available state of charge (SOCDisp1) from a battery capacity table based on battery temperature; - obtaining (120) a second intermediate available state of charge (SOCDisp2) based on a stored state of charge, a first instantaneous voltage, an instantaneous open-circuit voltage, and a predetermined minimum permissible voltage; - measuring (130) a second instantaneous voltage Ucell across the battery terminals; and - determining (140) an available state of charge (SOCDisp) based on the first intermediate available state of charge (SOCDisp1), the second intermediate available state of charge (SOCDisp2), and the measured (130) second instantaneous voltage Ucell.

The invention relates to the technical field of charging pile charging control, in particular to a flexible charging regulation and control system and method for a charging pile, and the method comprises the steps: obtaining real-time service parameters of the charging pile; calculating a stress accumulation item and a stress dissipation item; the equivalent lithium ion concentration stress of the current period is obtained through updating in combination with the stress accumulation item and the stress dissipation item; calculating a stress suppression item; generating a correction function; generating a dynamic current limit value by combining the stress suppression item, the correction function and a preset reference maximum allowable current; resolving a request current based on the power grid power instruction and the battery terminal voltage; generating a scheduling feasibility index in combination with the request current and the dynamic current limit value; according to the scheduling feasibility index, hierarchical power correction is executed, and actual issuing power is output; according to the invention, the operation safety of the battery is greatly improved, and the overall value of battery assets is greatly prolonged.

Provided are a mold kit, a self-piercing engagement method, a battery terminal contact assembly, and a battery. The mold kit comprises a first mold and a second mold. A first component is self-pierced into a second component by means of first-stage engagement using the first mold of the mold kit, so as to achieve pre-engagement therebetween; and the first component is further self-pierced into the second component by means of second-stage engagement using the second mold of the mold kit, so that a fixed connecting relationship having high firmness and strong stability is achieved between the first component and the second component. In particular, when the hardness of a material of the first component is equal to or less than that of a material of the second component, a fixed connecting relationship having the above properties can still be achieved between these two components. Moreover, the defects and problems caused by using welding to achieve a fixed connecting relationship between a terminal post and an adapter piece of a battery can be completely eliminated.

The invention relates to a contacting system (5) for individual battery cells (2) of a battery module (1) with cell connectors (8, 10, 11) for contacting the cell terminals (3, 4) of at least two of the individual battery cells (2) of the battery module (1). The contacting system according to the invention is characterized in that at least one of the cell connectors (8, 10, 11) has an internal cooling channel (9) for receiving a cooling medium.

The present invention provides a battery pack that can prevent the refrigerant from coming into contact with the battery cells. [Solution] A battery pack equipped with a battery cell 230 comprises a housing chamber wall portion 203 which is the wall of a housing chamber in which the battery cell 230 is housed, and a cooler 250 which is in contact with the outer surface of the housing chamber wall portion 203. The battery cell 230 is equipped with cell terminals 231, and the cell terminals 231 are in contact with the inner surface of the housing chamber wall portion 203. Since the battery cell 230 is in contact with the cooler 250 via the housing chamber wall portion 203, the battery cell 230 is cooled by the cooler 250. The battery cell 230 is housed in the housing chamber, while the cooler 250 is outside the housing chamber. Therefore, even if the refrigerant flowing through the cooler 250 leaks out, it is possible to prevent the leaked refrigerant from coming into contact with the battery cell 230.

The invention relates to the technical field of battery detection, in particular to an open-circuit voltage fitting method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining test data obtained through the pulse charging and discharging test of a battery; according to the test data, a first model parameter in a target fitting model is assigned, in the target fitting model, a battery end voltage is equal to the superposition of an ohm voltage drop, a charge transfer polarization voltage drop, a diffusion polarization voltage drop and an open-circuit voltage, and a second model parameter in the target fitting model is assigned; the first model parameters comprise ohmic impedance in the ohmic voltage drop, reaction impedance in the charge transfer polarization voltage drop and diffusion impedance in the diffusion polarization voltage drop; and on the basis of the target fitting model, open-circuit voltages of the battery in different charge states are obtained, and the different charge states correspond to different battery terminal voltages. Therefore, the estimation speed of the open-circuit voltage and the prediction accuracy of the open-circuit voltage are improved by adopting a pulse charging and discharging test and model fitting mode.

The invention relates to a charging point (1) for an electric vehicle (100), comprising: - a support (2) and - a charging terminal (3) designed for connection to a battery terminal (5) of the electric vehicle (100) such that the contact plane between the two terminals is vertical, characterized in that the charging point comprises a housing (6) surrounding the support (2), wherein the housing has a front opening facing the charging terminal (3) and the housing (6) is movable relative to the support (2) in a direction perpendicular to the contact plane between a neutral position, in which the opening is located at a neutral distance relative to the contact plane, and a charging position, in which the opening is located at a charging distance relative to the contact plane, the charging distance being smaller than the neutral distance.

The invention provides a hybrid power system for a generator set. Current detection is arranged at a battery terminal of a step-down charge channel and a step-up discharge channel of a bidirectional module, and voltage detection is arranged at two terminals of a diode to detect whether the diode has a voltage drop to determine whether a battery is in a charge state or non-discharge state; and whether the battery is in a charge state is determined by the current detection. A generator set in a non-operating state can be aroused to charge the battery, and the charge / discharge state of the battery can be effectively monitored and controlled.

The invention relates to a terminal (2, 3) for a battery cell (1) intended to be electrically connected to a current collector (10) of the battery cell (1). The terminal (2, 3) comprises a plate (71) and a cross-shaped indentation (73) projecting from the plate (71). The indentation (73) is designed to cooperate by complementary shape with a counter-indentation (63) delimited by the spacer (15), in such a way as to block relative translation and rotation between the terminal (2, 3) and the spacer (15). The invention also relates to an assembly (5) and a battery cell (1) comprising such a terminal (2, 3). Figure 1

A battery cell according to one embodiment of the present disclosure includes an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis, wherein the first electrode includes a first uncoated portion that is not coated with an active material layer at a long side end along the winding direction and is exposed to the outside of the separator, and at least a part of the first uncoated portion is used as an electrode tab in itself; a battery housing including an opening on one side and configured to accommodate the electrode assembly through the opening; a cell terminal configured to pass through a surface positioned on an opposite side of the opening of the battery housing; and a current collector including a first uncoated portion coupling part disposed on one side of the electrode assembly and configured to be welded to the first uncoated portion, a terminal coupling part spaced apart from the first uncoated portion coupling part and configured to be welded to the cell terminal, and a connection area provided between the first uncoated portion coupling part and the terminal coupling part, wherein the connection area includes a plurality of slits spaced apart at regular intervals in the circumferential direction and having a convex shape toward an outer side in the radial direction.

1. Name of the designed product: battery terminal. 2. Use of the designed product: the designed product is used for electric connection of the battery. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention presents a cell assembly (10) of a high-voltage storage device. The cell assembly (10) has a plurality of cells (12), each cell (12) having a cell terminal (30), formed by a cell extension (28), of a first pole (24) and a second pole (26) that forms a cell housing (34). The cell assembly (10) furthermore comprises connecting conductors (14) that electrically connect cell terminals (30) and / or second poles (26) to one another. Provision is additionally made for a short-circuit connection (42) that is provided outside the cells (12) and directly electrically connects the cell terminal (30) and the second pole (26) if a previously defined first reference temperature is exceeded.

This invention discloses a constant power charge-discharge control method for vanadium redox flow batteries based on MPC-SP, applied to an energy storage control system consisting of an MPC-SP controller, a PCS, and the vanadium redox flow battery. Based on a preset SOC range, the controller dynamically and precisely adjusts the power output to the battery, increasing the power in stages as the actual SOC value of the battery increases. Simultaneously, the controller constantly monitors the battery terminal voltage Ud; when Ud reaches a voltage limit, it switches to constant voltage mode, effectively preventing battery damage due to excessive voltage. This state-based dynamic power management is far safer, more flexible, and more intelligent than traditional fixed constant power control. This invention reduces the rate of current change during the charge-discharge process of the vanadium redox flow battery, extending battery life while ensuring safety.

The present application relates to the technical field of battery monitoring, in particular to an online battery terminal electric energy metering system for a direct current charger, comprising a battery terminal data acquisition module, a cloud battery digital twin module, a state estimation and parameter updating module, a battery terminal online electric energy metering module, a station terminal energy monitoring and prediction module, an energy distribution and node scheduling module, a direct current charging control module and a user interaction and result issuing module. By collecting power battery operation data, a battery digital twin is constructed in the cloud to complete state estimation, parameter updating and online electric energy metering, and in combination with station terminal available energy prediction, target energy supply, target charging current and node distribution results are generated for multiple charging requests, charging control is executed and distribution results, predicted waiting time and charging state are fed back, thereby improving electric energy metering, energy distribution and node scheduling accuracy.

The present invention provides an electrode body and a secondary battery that reduce the amount of metal used while facilitating the flow of current between the electrode and the battery terminals. [Solution] An electrode body 20 is formed by winding a strip-shaped first electrode plate and a strip-shaped second electrode plate along the longitudinal direction via a separator 60b, wherein the first electrode plate has a first base material made of resin, a first metal layer formed on the first base material, and a first active material layer formed on the first metal layer, the first metal layer has a first exposed portion E1 at one end in the winding axis direction X of the electrode body where the first active material layer is not formed, the length of the first exposed portion E1 in the winding axis direction X decreases from one end to the other in the longitudinal direction, and a first electrode joint portion 21 is formed where the first exposed portion E1 is exposed sequentially from one end in the longitudinal direction.

The invention discloses an automobile low-voltage storage battery intelligent electricity supplement model based on multi-physics field coupling analysis, which mainly realizes accurate state evaluation and dynamic electricity supplement strategy optimization of a low-voltage storage battery by establishing a nonlinear state space equation and a fuzzy decision rule. The system specifically comprises a multi-parameter coupling modeling module used for evaluating the terminal voltage of the storage battery, a battery state evaluation module used for combining the terminal voltage to evaluate the charge state of the storage battery, a fuzzy decision module used for determining the charging voltage and current according to the charge state, and a control module used for determining the charging current and the charging voltage in the charging process through the charging voltage and the charging current. And the self-adaptive correction module is used for identifying the internal resistance of the battery on line and carrying out dynamic voltage compensation. According to the method, all key factors can be comprehensively integrated, accurate estimation of the capacity of the low-voltage storage battery is realized, so that the electricity supplementing accuracy is improved, the service life of the low-voltage storage battery is prolonged while the power consumption is reduced, and the method is suitable for accurate evaluation of the battery state and optimization of the electricity supplementing strategy when the vehicle is in a dynamic working condition.

This utility model discloses a rotatable car power-off switch, relating to a switching device including a housing; two conductive plates symmetrically mounted on the housing, with one conductive plate extending from the housing to the outside; a clip connected to the external end of the conductive plate for connection to a battery terminal; a handle movably mounted on the housing; a movable conductive plate mounted on the bottom of the handle for connecting / disconnecting the two conductive plates; and a spring, the bottom of which rests against the bottom of the inner cavity of the housing, and the top of which contacts the movable conductive plate, providing an upward elastic force to the movable conductive plate. This utility model, by providing an externally extending conductive plate and a clip fixedly connected to it for connection to the car battery terminal, allows for direct connection of the clip to the negative terminal of the car battery during rotary switch installation, eliminating the need to wrap the entire switch around the negative terminal, making it more suitable for operation in confined spaces.

The application belongs to the technical field of automobile battery terminal loosening test, and particularly relates to a durability test equipment, which comprises a battery pack formed by connecting storage batteries in series, a simulation box and a vibration assembly, the battery pack is placed on the upper surface of the vibration assembly, the battery assembly and the vibration assembly are both located in the interior of the simulation box, and the battery pack is externally provided with an anti-collision shell, the gap control column for ensuring that the friction between the wheel and the belt is in the normal range can avoid unnecessary damage of the battery pack caused by impact during simulation, high-speed rotation of the motor is prone to cause the battery pack to be separated from the vibration assembly, at this time, the motor is in idling, the idling will affect the deviation of the whole road simulation frequency, the battery assembly will be upwardly ejected and downwardly impacted due to high-speed rotation of the irregular vibration wheel, and the gap control column reversely buffers the upward ejection and the downward impact when the force reaches the peak.

A battery cell according to the present invention comprises: an electrode assembly in which a first electrode, a second electrode, and a separator interposed therebetween are wound around a winding axis; a can housing having an open end portion so that the electrode assembly can be inserted therein; a cell terminal which is electrically connected to the first electrode, and which is provided in a closed portion of the can housing positioned on the opposite side of the open end portion; an electrode current collector plate which is electrically connected to the second electrode and which is in contact with the inner side surface of the open end portion; and a can lead mutually coupled with the open end portion so as to seal the can housing, wherein the can lead includes a lead side surface portion forming the outer circumference thereof, and the lead side surface portion can be fitted and coupled to the inner side surface of the open end portion with an electrode current collector plate end portion, interposed therebetween, forming the outermost edge of the electrode current collector plate.

The integrated circuit (330) includes first, second, third, and fourth transistors (316, 314, 312, 310) and a control circuit (308). The first transistor is coupled between a first battery terminal and a first inductor terminal and has a first transistor control terminal. The second transistor is coupled between the first inductor terminal and a second battery terminal and has a second transistor control terminal. The third transistor is coupled between a third battery terminal and a second inductor terminal and has a third transistor control terminal. The third battery terminal is coupled to the second battery terminal. The fourth transistor is coupled between the second inductor terminal and a fourth battery terminal and has a fourth transistor control terminal. The control circuit has a control input and first, second, third, and fourth control outputs coupled to the first, second, third, and fourth transistor control terminals, respectively.

This utility model discloses an online testing fixture for lithium batteries, including a base plate, a support plate, a support plate reinforcing plate, a tray, a probe mounting plate, push rods, a cylinder, and probes. The cylinder is located on one side of the base plate, and a support plate connected to the end of the base plate is located outside the cylinder. Support plate reinforcing plates are located on both sides of the support plate. The cylinder rod is connected to the tray. The bottom ends of the tray are connected to the two ends of the probe mounting plate via cross push rods. The probe mounting plate is located at the other end of the base plate and has probes mounted on it. This utility model has a reasonable structural design, is suitable for automated production, and ensures smooth movement of the tray through cross push rods. It can guarantee reliable connection between the probes and battery terminals for stable and accurate testing. It also has the potential to develop intelligent recognition functions and is highly versatile, which can improve testing efficiency and production quality control.

A protective interconnection circuit for interconnecting a solar panel, a battery and a charge controller. One embodiment has a pair of post-mate, mating electrical connectors. The connectors have at least two primary conduction paths through the joined connectors and a first set of at least two auxiliary conduction paths through the joined connectors. The primary conduction paths electrically connect the battery to the charge controller. The auxiliary conduction paths of the battery side connector are connected together. The auxiliary conduction paths of the controller side connector are connected one to the solar panel and the other to the charge controller. Another embodiment has a relay with its coil terminals electrically connected the controller's battery terminals. The relay contacts are interposed in a conductive connection between the solar panel and the controller.

The utility model discloses a battery terminal angle adjusting tool which comprises a conveyor and an angle adjusting table arranged on one side of the conveyor, and the angle adjusting table is provided with a feeding mechanism and an adjusting mechanism. The adjusting mechanism comprises a second support, a motor is fixedly connected to one side of the second support, a coupler is fixedly connected to the output end of the motor, and a linkage rod is fixedly connected to the end, away from the motor, of the coupler. The conveyor conveys the batteries to the angle adjusting table, the batteries are tidily stacked and placed below the linkage rod through the feeding mechanism, the motor is started, the motor drives the linkage rod to rotate through the coupler, then the shifting plate is driven by the telescopic piece to rotate with the linkage rod as the axis, and the batteries are conveyed to the angle adjusting table through the angle adjusting table. The toggle plate can toggle terminals on a plurality of batteries at the same time to adjust the angle until the height is consistent, so that each terminal is ensured to be in complete contact with the contact surface of the discharge component in the capacity grading process, and the capacity grading equipment can discharge a battery pack conveniently.