55 results about "Unit charge" patented technology

The invention discloses a detection device with a power supply self-compensation function and a compensation method thereof. The compensation method comprises the following steps: detecting whether an external power supply is switched on or not; if the external power supply is switched on, judging whether the power supply voltage of the external power supply is higher than the working voltage threshold of the sensor unit through the low-voltage detection circuit; if yes, the foot voltage control switch is switched on, the under-voltage control switch is not switched on, and an external power supply supplies power to the detector detection part; if the voltage is lower than the threshold value, the undervoltage control switch is conducted and the foot voltage control switch is not conducted, the energy storage unit charging and discharging management circuit supplies power to the energy storage voltage detection circuit to enable the energy storage unit power supply control switch to be conducted, and the power is transmitted to the detector detection component through the power supply management circuit for automatic compensation power supply; and if the external power supply is not switched on, the external power supply control switch is not switched on, and the energy storage unit does not self-discharge to supply power to the sensing unit of the detector detection part. According to the invention, automatic compensation when power supply of the detector detection part is insufficient is realized.

A data update device for electronic control devices includes: a charge schedule setting unit for setting a charge schedule of a battery of an electric vehicle; a charge control unit for charging the battery according to the charge schedule; and a data update control unit for updating data of one electronic control device by acquiring update data from a center device on a condition that an acknowledgement of the user is obtained when receiving a notification of the update data from the center device together with information about time required for the updating, and determining that the updating is possible even if the charge control unit charges the battery according to the charge schedule.

The invention provides a modularized direct current charging pile with a power pool scheduling function and a control method thereof, and the charging pile comprises at least one modularized single charging pile which comprises a plurality of plugging power modules, a shared power pool structure, a plurality of first type charging guns, and a power manager. A plurality of plugging power modules of any modular single charging pile form a single annular structure through a shared power pool structure, or a plurality of plugging power modules of at least two modular single charging piles form a shared annular structure, and the first type of charging guns of the at least two modular single charging piles are bridged through a bridging structure; and the power manager obtains the charging demand information of the charging object, and schedules the plugging power module from the monomer ring structure or the shared ring structure according to the charging demand information so as to charge the charging object, so that the power resource utilization rate can be improved, the equipment expansibility can be enhanced, and dynamic power scheduling can be realized.

A receiver for wirelessly receiving transmitting power includes a control unit, a charging unit charged by the transmitting power, a sensor configured to measure a physical quantity, and a transmitter configured to transmit the physical quantity. The control unit includes a voltage acquisition module to detect a charging voltage of the charging unit, a threshold comparison module to compare the voltage with a threshold, and a power receiving state determination module to determine a power receiving state based on the comparison. The control unit includes a transmission control module to determine whether transmission is permitted based on the state. A transmission timing control module causes the transmitter to transmit at a predetermined interval. If transmission is not permitted, the timing is delayed by a predetermined time. If the timing is consecutively delayed a predetermined number of times, the transmission is performed after a next predetermined transmission interval.

The invention discloses a photovoltaic hydrogen production grid-connected system and method based on multi-state cooperative scheduling, and relates to the field of new energy comprehensive utilization. The system solves the problems of unstable operation of an electrolytic bath, low comprehensive utilization rate of energy, poor economic benefit and the like caused by intermittency and volatility of photovoltaic power generation in the prior art. The system comprises a photovoltaic power generation unit, an energy storage unit, at least one electrolytic bath unit, a hydrogen storage unit and a controller. The controller monitors the photovoltaic power generation power, the charging state of the energy storage unit and the hydrogen storage state of the hydrogen storage unit in real time, and executes the following operations according to a preset multi-state cooperative scheduling strategy: starting the electrolytic cell units in a grading manner according to a photovoltaic power threshold value; the energy storage unit is used for smoothing photovoltaic power fluctuation and stably supplying power to the electrolytic cell; in addition, on the basis of two independent triggering conditions that the energy storage unit reaches the upper limit or the hydrogen storage unit reaches the upper limit, surplus electric energy of the system is dynamically sold in a grid-connected mode. The device is also suitable for the fields of integrated photovoltaic power generation, electrochemical energy storage and water electrolysis hydrogen production.

Charging cable unit (40) for a charging station (30) of an electric vehicle charging station, characterized by the following features: - the charging cable unit (40) includes a cooling unit (10) and a charging cable (17), - the charging cable (17) has a secondary coolant circuit, - the cooling unit (10) includes a heat exchanger (20) with first connections (11, 13) and second connections (15, 16), - the second connections (15, 16) are fluidically connected to the secondary coolant circuit and - the cooling unit (10) is designed to cool the secondary coolant circuit when the first connections (11, 13) are fluidically connected to a common primary coolant circuit of the electric vehicle charging station.

The invention provides a new energy power station digital-intelligent integrated grid-connected cooperation method and system, and relates to the technical field of energy storage charging and discharging control. The method comprises the following steps: acquiring the environment temperature, irradiance and output power of a power station; the photoelectric conversion improvement degree is determined based on the current environment temperature and the optimal working temperature, the high-frequency detail component of the irradiance time sequence is extracted, the amplitude discreteness of the high-frequency detail component is determined, and the high-frequency cooperative inhibition degree is determined in combination with the photoelectric conversion improvement degree; an energy spectrum of the output power time sequence is extracted, a high-frequency energy change sequence is constructed, an energy attenuation deviation degree is determined based on a fitting function fitting point change slope Shannon entropy, high-frequency energy and frequency domain energy of a corresponding fitting point, and a cooperation bad interference degree is determined by combining a high-frequency cooperation inhibition degree; based on the current environment temperature, the irradiance signal and the cooperative bad interference degree, obtaining predicted output power through a power prediction model; and controlling the energy storage unit to charge and discharge based on the prediction error. According to the invention, charge-discharge cooperative control of the energy storage unit can be realized.

The driving range estimation method based on unit charge range and battery aging correction mainly includes four steps: online battery SOC estimation, periodic battery SOH update, unit SOC range estimation, and driving range estimation. This invention uses periodic battery SOH estimation to correct the battery SOC estimation, and combines unit SOC range estimation to achieve accurate driving range estimation. It has the advantages of simple model structure, low computational load, high estimation accuracy, and easy implementation in vehicle BMS. Under normal driving conditions, the maximum driving range estimation error of this invention is within 3km, which meets the operating requirements of electric vehicles.

The present application belongs to the technical field of electric power energy storage, and discloses an energy storage system fast frequency regulation energy management method, system, device and storage medium, obtains a frequency variation of a grid-connected point of an energy storage system, calculates energy storage unit charging and discharging requirements, calculates charging and discharging weights of each energy storage unit according to a state of charge of the energy storage unit and an in-cabin temperature, calculates a power distribution instruction value based on the energy storage unit charging and discharging requirements and the charging and discharging weights of each energy storage unit, and transmits the power distribution instruction value to an on-site control system or an energy storage converter of the energy storage unit. The present application fully considers the inconsistency of the SOC of each energy storage unit and the in-cabin temperature, can tilt the power distribution instruction to the energy storage unit with high SOC and low in-cabin temperature during discharging, and can tilt the power instruction to the energy storage unit with low SOC and low in-cabin temperature during charging, so as to realize optimal energy management effect, improve the energy utilization efficiency of the energy storage system, and prolong the service life of the energy storage battery pack.

The invention provides a positive pole piece, a secondary battery and an electronic device. The positive pole piece comprises a positive current collector, a positive pole lug and a positive active material layer arranged on at least one side of the positive current collector, the positive active material layer comprises a first material layer and a second material layer, and the second material layer comprises a first region and a second region; along the thickness direction of the positive pole piece, the first material layer is arranged between the positive current collector and the first region, and the second region comprises a first thinned region; in the width direction of the positive pole piece, one side of the positive pole current collector is connected with a positive pole lug, the second region is adjacent to the first region, the second region is arranged on at least one surface of the positive pole current collector, and the second region is positioned between the first region and the positive pole lug; the unit charge gram capacity of the first material layer is N1, the unit charge gram capacity of the second material layer is N2, and N1 and N2 meet the following conditions: N2 is greater than N1, N2 is greater than or equal to 180 mAh / g and less than or equal to 200 mAh / g, and N1 is greater than or equal to 130 mAh / g and less than or equal to 150 mAh / g. Through the arrangement, the energy density of the secondary battery can be improved.

The invention relates to the technical field of lithium battery protection, and discloses a high-safety lithium battery overcharge protection device which comprises a lithium battery charging mechanism, the middle position of the lithium battery charging mechanism is connected with an overcharge protection mechanism, the lithium battery charging mechanism comprises a positioning protection frame, and the middle position of the positioning protection frame is connected with a charging connection base. A limiting groove is formed in one side of the positioning protection frame; according to the invention, current input can be rapidly and thoroughly cut off when overcharge or current abnormity is detected; the driving motor drives the eccentric control frame to rotate through transmission of the positioning shaft and the positioning gear, so that the lifting protection frame, the power connection limiting frame and the protection frame are stably and quickly jacked up and move upwards; the charging plug of the lithium battery unit is quickly separated from the charging connection base, so that the complete power-off treatment of the lithium battery unit is realized; according to the design, the influence of continuously input micro current on the lithium battery unit is effectively avoided, the service life of the lithium battery is remarkably prolonged, and the charging safety of the lithium battery is remarkably improved.

A backup power supply system is provided with a first port, a second port, a charging circuit unit, an output circuit unit, a deterioration detection unit, and a control unit. The charging circuit unit charges the power storage unit with power input from the power supply via the first port. The output circuit unit supplies power from the power storage unit to the load via the second port in a power-off state in which the power supply is powered off. The deterioration detection unit detects a deterioration state of the power storage unit. The control unit controls, on the basis of the detection result of the deterioration detection unit, a set value of the charging voltage when the charging circuit unit charges the power storage unit.

Charging cable (100) for carrying out a charging process of an electrical storage unit (110), with: at least one measuring unit (120) for measuring charging current during operation of the charging cable (100), wherein the measuring unit (120) is assigned a control unit (130) for controlling a light source (140), wherein the charging cable (100) includes the light source (140), and the light source (140) has light elements (142), wherein the light elements (142) are arranged along the entire length of the charging cable (100), wherein the light elements (142) are arranged circumferentially at least at the ends of the charging cable (100), and where the density of the light elements (142) per unit area is increased at the ends of the charging cable (100).

The system according to this embodiment aims to optimize drone battery management and charging schedules, as well as optimize flight paths considering weather conditions and social media information. [Solution] The system according to the embodiment comprises a management unit, a scheduling unit, a charging unit, an optimization unit, and an analysis unit. The management unit manages the battery status of the drone. The scheduling unit creates a charging schedule based on the battery status managed by the management unit. The charging unit charges the drone based on the charging schedule created by the scheduling unit. The optimization unit analyzes weather data and optimizes the flight path. The analysis unit analyzes information from social media and avoids inappropriate routes.

The invention provides an energy storage unit charging and discharging safety monitoring method, an energy storage system and a storage medium, and the method comprises the steps: obtaining the charging and discharging state of at least one battery pack in a series battery pack in the charging and discharging process, the charging and discharging state comprising a first type of abnormal state and a second type of abnormal state, the first type of abnormal state is a state that the charging rate is too fast or the discharging rate is too slow, and the second type of abnormal state is a state that the charging rate is too slow or the discharging rate is too fast; according to the charging and discharging state, determining the number of first-class anomalies and the number of second-class anomalies within a preset duration; calculating a recent safety coefficient according to the first type of abnormality times and the second type of abnormality times; and determining a first risk level of the energy storage unit according to the range of the recent safety coefficient. By applying the charging and discharging safety monitoring method of the energy storage unit, the safety of the energy storage unit can be improved by monitoring the charging and discharging states of the battery pack in real time.

A charging control method and charging control apparatus for a vehicle charging device. The vehicle charging device is mounted on a traveling rail hoisted at the top of a parking lot, and charging base stations which are connected to charging guns are arranged along the traveling rail and correspond to parking spaces in the parking lot. The vehicle charging device comprises a charging main unit mounting platform and a charging main unit, which is detachably mounted to the charging main unit mounting platform. The charging control method comprises: a charging main unit mounting platform receiving a charging instruction for transporting a charging main unit to a target charging base station to execute a charging task; the charging main unit mounting platform moving to the charging main unit, and mounting the charging main unit thereon; the charging main unit mounting platform with the charging main unit mounted moving to the target charging base station; and the charging main unit mounting platform unmounting the charging main unit, and electrically docking the charging main unit with the target charging base station, wherein a movable plug-in module of the charging host is electrically connected to a static plug-in module of the charging base station, such that the charging main unit charges a vehicle by means of a charging gun connected to the charging base station.

A gate driver has a plurality of stages for outputting a gate signal for imaging at display driving and outputting a gate signal for sensing at sensing driving after the display driving. Each stage of the plurality of stages includes a pixel row selection unit and an output unit, the pixel row selection unit charging a first node with a first preceding stage carry signal according to a pixel row selection signal of a gate-on voltage during the display driving and charging a second node with a first high potential power voltage according to a sensing start signal of the gate-on voltage and a charged voltage of the first node during the sensing driving, the output unit outputting a scan clock of the gate-on voltage as the gate signal for sensing while the second node remains in a charged state at the sensing driving, wherein the first high potential power voltage is higher at the sensing driving than at the display driving.

The invention discloses a piezoelectric underwater acoustic chip array structure and a chip, and belongs to the technical field of micro electro mechanical systems. The chip array structure sequentially comprises a sensitive structure layer, a lower electrode insulating layer and an SOI layer from top to bottom, the sensitive structure layer comprises an upper electrode wafer, a piezoelectric layer, an upper and lower electrode interconnection line, a lower electrode connection line and a lower electrode wafer; the SOI layer comprises a device silicon layer, a buried oxide layer and a back substrate, cavities are formed in the back substrate, and each cavity defines a chip unit; and the upper electrode wafers of the chip units are electrically conducted with the lower electrode wafers of the adjacent chip units through the upper and lower electrode interconnection lines and the lower electrode connecting lines to form a tandem array structure. Under the condition of keeping unit charge output unchanged, the total equivalent capacitance of the array is reduced, the output voltage is improved, and the sensitivity of the piezoelectric underwater acoustic chip is further improved.

The invention relates to the technical field of magnetic shielding, and discloses a magnetic shielding degaussing wide-range pulse compensation circuit and device.A primary energy storage unit supplies power to a first energy storage element through a first charging element, and a first control element adjusts the charging speed of the first energy storage element; the power compensation unit charges the second energy storage element through double paths, and the second control element is switched to realize power compensation; the resonance modulation unit is connected with the resonance adjustment module through a third control element, under-damped oscillation of the degaussing coil is maintained, resonance parameters are adjusted, and the degaussing coil generates a degaussing pulse magnetic field. The primary energy storage unit adjusts the charging speed of the first energy storage element through the first control element, different working modes can be flexibly adapted, the requirement for rapid energy supplementation after long-term idling can be met, the scene of short-time repeated use and single-time large energy output can be coped with, and the energy storage adaptability and the energy utilization efficiency of the circuit are improved.

The utility model provides test equipment, which comprises a current acquisition unit, a charging unit, a controller and a clamping unit used for fixing equipment to be tested, the charging unit comprises a charging base and a lifting unit connected with the charging base, the charging base is provided with at least one first charging pin, the charging unit and the clamping unit are oppositely arranged, and the lifting unit is connected with the lifting unit. The controller is used for controlling the lifting of the lifting unit so as to adjust a first state in which the charging unit charges the to-be-tested equipment clamped by the clamping unit, and the current acquisition unit is connected with any first charging pin and is used for acquiring current data of the first charging pin. In the technical scheme, the lifting unit of the charging unit is used for adjusting the relative position of the to-be-tested device and the charging unit to simulate the charging scene, and the current acquisition unit is used for acquiring the current data in the test process, so that the charging performance in the test process is subsequently analyzed; the effect of automatically and efficiently testing the charging performance of the to-be-tested equipment is achieved.

The invention provides an energy storage system control method and system for a photovoltaic module, and electronic equipment. The method comprises the steps of collecting a real-time output power signal and related operation environment data of the photovoltaic module; performing empirical mode decomposition on the output power signal to obtain a plurality of intrinsic mode function components and residual errors; hilbert transformation is carried out on each intrinsic mode function component to extract an instantaneous characteristic of each intrinsic mode function component, and the instantaneous characteristic comprises an instantaneous frequency and an instantaneous amplitude; according to the instantaneous characteristic of the intrinsic mode function component and the trend prediction of the residual error, synthesizing to obtain a photovoltaic power prediction value at a future moment; constructing a multi-objective function model according to the photovoltaic power predicted value; solving the multi-objective optimization model under the condition of meeting the power balance constraint and the energy storage unit charge state constraint to obtain a power distribution instruction; and controlling the energy storage system to charge and discharge according to the power distribution instruction.

This disclosure relates to the field of magnetic shielding technology, and discloses a wide-range pulse compensation circuit and device for magnetic shielding demagnetization. A primary energy storage unit supplies power to a first energy storage element via a first charging element, and a first control element adjusts the charging speed of the first energy storage element. A power compensation unit charges a second energy storage element via a dual-pathway, and a second control element switches to achieve power compensation. A resonant modulation unit, through a third control element and a resonant adjustment module, maintains the underdamped oscillation of the demagnetizing coil and adjusts the resonant parameters, while the demagnetizing coil generates a demagnetizing pulse magnetic field. The primary energy storage unit adjusts the charging speed of the first energy storage element via the first control element, allowing for flexible adaptation to different operating modes. This satisfies the need for rapid energy replenishment after long-term idle periods, and also addresses scenarios of short-term repeated use and single large energy output, improving the circuit's energy storage adaptability and energy utilization efficiency.

The application discloses a lithium battery capacity loss method and system under a variable temperature condition, and a storage medium, wherein the method comprises the following steps: S1: recording a temperature change curve in a lithium battery charging process; S2: calculating equivalent charging time of each unit charging time under a standard working temperature according to an Arrhenius formula; S3: accumulating the equivalent charging time corresponding to each unit charging time in the lithium battery charging process to obtain equivalent total charging time of the lithium battery under the standard working temperature under the variable temperature condition; and S4: bringing the equivalent total charging time into a battery capacity loss classical equation under the standard working temperature to calculate the capacity loss of the lithium battery under the variable temperature condition. The method converts each unit charging time into equivalent charging time under the standard working temperature, so that the capacity loss calculation equation obtained through experiments under the standard working temperature can be used to calculate the capacity loss of the lithium battery under the variable temperature condition.

A battery management system and battery swapping control method for a battery swapping station are disclosed. The battery management system includes a control unit, a detection unit, a calculation unit, a charging unit, a temperature control unit, and a battery swapping unit. The control unit receives a battery swapping request from a requesting end and records the request reception time t1. The battery swapping request includes at least a scheduled battery swapping time t2 and a battery swapping temperature T. The detection unit detects the battery's charge and temperature information within the battery swapping station. The calculation unit collects the charge and temperature information detected by the detection unit and performs calculations to select a target battery whose charge and temperature meet the battery swapping request at the scheduled battery swapping time t2. The charging unit charges the target battery, and the temperature control unit regulates the temperature of the target battery. The control unit, detection unit, calculation unit, charging unit, and temperature control unit are interconnected, which can reduce the energy consumption of the battery swapping station and improve the driving experience of the vehicle.

The application provides a constant power control circuit, comprising a PWM unit, an output dynamic adjustable duty ratio PWM signal; a load branch, comprising a load resistor, outputting constant power according to the dynamic adjustable duty ratio PWM signal; a load mirror branch, comprising a mirror load resistor, a first current flowing through the load resistor and a second current flowing through the mirror load resistor being in a first preset proportion; a conversion circuit converting a voltage of the load resistor into a third current and converting a voltage of the mirror load resistor into a fourth current; an energy storage unit charging by using the third current and the fourth current respectively; a counting unit converting a charging time of the energy storage unit into a digital parameter; a logic control unit calculating real-time power of the load according to the digital parameter, and dynamically adjusting a duty ratio of the PWM signal output by the PWM unit according to the real-time power, so as to realize constant output of the load power.

A power supply system is provided with: a first battery; a second battery; a power converter connected to the power generation device or an external power source; and a series-parallel switching circuit that can switch between the series connection between the first battery and the second battery and the parallel connection between the first battery and the second battery by the on / off of the plurality of relays, and performs charge equalization control that alternately performs: a first battery charging process that charges the first battery, and a second battery charging process that charges the second battery; the charging unit charges only the first battery by switching on and off a plurality of relays. And a power storage ratio equalization process in which the power storage ratio of the first battery and the power storage ratio of the second battery are equalized. During execution of the power storage proportion equalization processing, power from the power generation device or the external power source is supplied to the auxiliary device or the auxiliary battery.

A battery module according to an embodiment of the present invention comprises: a battery cell; and a power conversion unit connected to the battery unit and the solar power generation unit, in which power output from the solar power generation unit charges the battery unit or is output to the DC link through the power conversion unit.

The invention discloses a cascode floating inverting amplifier based on dynamic substrate bias, comprising: an input stage module comprising an input transistor and dynamically adjusting the threshold voltage of the input transistor through the substrate bias effect, so that the input transistor always works in a saturation region in the amplification process; the cascode stage module comprises at least two stages of transistors, and substrates of the transistors are respectively connected to respective sources so as to eliminate the substrate bias effect; the floating power supply module comprises a power supply capacitor and a non-overlapping clock control unit, the non-overlapping clock control unit charges the power supply capacitor to a power supply voltage through resetting, the power supply capacitor supplies power to an amplifier at an amplification phase, and the stability of an output common-mode voltage is maintained through the symmetry of currents of an upper pole plate and a lower pole plate of the capacitor; through three innovative technologies of dynamic substrate bias, a two-phase clock floating power supply and input common-mode decoupling, the defects of a traditional amplifier in transconductance range, common-mode feedback complexity and process cost are overcome.

1. Name of the product in this design: Main unit charging pile (3680KW). 2. Purpose of this design: This design is used for charging electric vehicles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application provides a kind of collaborative frequency control method of network construction type and follow network type energy storage, comprising: constructing simulation model including network construction type energy storage unit, follow network type energy storage unit, synchronous generator and alternating current load, when simulation model occurs frequency disturbance, the absolute value of frequency deviation is obtained, whether the absolute value of frequency deviation exceeds threshold value is judged, if exceeds set threshold value, then network construction type energy storage unit and follow network type energy storage unit are regulated respectively, if it does not exceed set threshold value, then enter next sampling period, wherein, if exceeds set threshold value, then according to the positive and negative of frequency deviation control energy storage unit charging and discharging.The application gives full play to the virtual inertia support and frequency autonomous support of network construction type energy storage unit, follow network type energy storage unit quickly responds upper control signal, plays better frequency support effect, can quickly and effectively control follow network type energy storage and network construction type energy storage collaborative participation system frequency regulation.