756 results about "Electric Capacitance" patented technology

The invention provides an optical storage parallel network control method, which comprises the following steps: calculating the current load rate percentage of each residual unit according to the connection relation and electrical path information of the residual units after isolation; evaluating the available margin capacity and the frequency regulation bearing capacity of the remaining units, matching the available margin capacity and the frequency regulation bearing capacity with a specific power value and a frequency regulation requirement which need to be compensated, and determining a feasible unit combination scheme for fault recovery; generating a power redistribution list and a frequency adjustment responsibility distribution table according to the direct current bus connection mode of the optimal unit recombination, and obtaining an output power set value and a frequency adjustment parameter of each unit after adjustment; and extracting the continuous power supply time value of the optical storage parallel network, updating the total power supply capacity value of the optical storage parallel network, and maintaining the continuous power output and frequency stability after the fault of the optical storage parallel network.

The invention provides a lithium battery full-temperature-range DCR fitting test method and system based on multi-factor coupling, and relates to the technical field of lithium batteries, and the method comprises the steps: obtaining a to-be-tested lithium battery, carrying out the charge-discharge cycle under a set condition, and measuring the average discharge capacity as an initial capacity reference; the method comprises the following steps: carrying out multi-state-of-charge calibration on a lithium battery cell, adjusting the lithium battery cell to a set target SOC point, sequentially placing the lithium battery cell in different temperature environments to be stable, measuring the DCR value at each temperature, then carrying out cyclic aging on the lithium battery cell to different health states, and measuring the DCR values at each temperature and in different health states; based on the DCR values in different health states at different temperatures, utilizing an Arrhenius formula to fit the relation between the DCR values and the temperatures, introducing an SOC correction function and an SOH correction function, and constructing a three-dimensional DCR fitting model; and according to the fitting model, inputting the target temperature T, the SOC and the SOH, and outputting an estimated test DCR value.

The utility model discloses a silicon capacitor electrode structure and a silicon capacitor, which can further improve the capacitance of a capacitor in a limited space by nesting, combining and arranging a plurality of groups of element arrays distributed in a triangular grid mode more reasonably and precisely, so that the capacitor can store more charges.

The embodiment of the invention provides a silicon-carbon negative electrode material and a preparation method thereof, a negative electrode plate and a battery, the silicon-carbon negative electrode material comprises a silicon-carbon inner core and a coating layer coating the silicon-carbon inner core, and the silicon-carbon inner core comprises a porous carbon substrate and nanometer silicon arranged on the porous carbon substrate. The test result of the first cyclic volt-ampere test of the silicon carbon negative electrode material meets at least one of the following conditions: (a) the value of dQ / (dV * C) of a discharge differential capacity curve in a voltage interval of 0.45 V + / -0.05 V is less than or equal to 1.7, dQ / dV represents differential capacity, the unit is mAh / V, C represents charge capacity, and the unit is mAh; (b) no sharp peak exists in a discharge differential capacity curve in a voltage interval of 0.45 V + / -0.05 V, the battery can present a smooth and stable discharge process, the capacity retention ratio and the stability of the battery after circulation are improved, and the preparation method is simple, convenient and feasible, and is suitable for industrial production.

The invention discloses a display panel and a display device. A pixel circuit of the display panel comprises a driving transistor, a compensation transistor and a storage capacitor which are connected, the driving transistor comprises a driving active part and a driving grid electrode, the compensation transistor comprises a compensation active part and a compensation grid electrode, and the compensation active part and the driving active part are made of different materials. The storage capacitor comprises a first pole plate and a second pole plate which are oppositely arranged, the first pole plate and the driving grid are made of the same material, and the second pole plate and the compensation grid are made of the same material; the first polar plate of the storage capacitor is prepared from the material of the driving gate, and the second polar plate of the storage capacitor is prepared from the material of the compensation gate, that is, the materials of the two capacitor polar plates of the storage capacitor are metal materials, so that the technical problem of insufficient conductor of the capacitor polar plates is eliminated, and the capacitance of the storage capacitor is ensured; and the display effect of the display panel is improved.

The invention discloses a method for regulating and controlling a pore structure of a cement-based supercapacitor, and belongs to the technical field of energy storage. The method for regulating and controlling the pore structure of the cement-based supercapacitor comprises the following steps: firstly, preparing foam, then uniformly stirring cement and sand, adding water and a water reducing agent, fully stirring, and finally, doping the foam into slurry, and fully stirring to obtain the slurry. And pouring the stirred slurry into a mold, standing for 24 hours, and demolding to obtain the cement matrix. And packaging the front, back, left and right surfaces of the cement matrix by using epoxy resin, and drying at 60 DEG C for 3 days. And soaking the treated test piece in a 2mol / L KOH solution for 5 days, and then manufacturing the test piece into the cement-based supercapacitor. According to the invention, the regulation and control of the pore structure of the cement-based supercapacitor are realized, the treated cement-based supercapacitor has better pore connectivity, the pores show tropism, the conductivity and the capacitance are better, the specific capacitance can reach 63.3 F / m < 2 > to the maximum, and the compressive strength and the breaking strength are reduced.

The invention belongs to the technical field of flexible transparent energy storage, and discloses a preparation method and application of a flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode, according to the method, a PDMS substrate film, AgNWs and MXene are assembled layer by layer, and a Schottky barrier is formed between one-dimensional AgNWs and two-dimensional MXene, so that the MXene material is firmly attached to the surface of the AgNWs material, corrosion of the AgNWs can be prevented, and the service life of the flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode is prolonged. According to the MXene / AgNWs / PDMS composite film electrode, the cycle stability of the composite electrode is improved, a 1D / 2D heterostructure can be formed, the electrochemical storage capacity of the MXene / AgNWs / PDMS composite film electrode is effectively improved, and a flexible transparent supercapacitor with high light transmittance, high capacitance and mechanical flexibility perfectly unified is expected to be achieved.

The invention relates to the technical field of battery management, in particular to an intelligent charging adjustment method and system based on dynamic monitoring, and the method comprises the steps: determining a tested energy storage battery, determining a target battery based on a charging adjustment instruction, carrying out the feature extraction of a plurality of historical charging data and the previous full capacitance, and obtaining a charging emergency coefficient and a battery aging coefficient; a humidity sensor and a temperature sensor are used for obtaining current humidity and current temperature respectively, particle swarm simulation is carried out on a charging emergency coefficient, a battery aging coefficient, a constant current curve set, a constant voltage curve set, a switching curve set, the current humidity and the current temperature, and target constant current, target constant voltage and a target switching threshold value are obtained; and if the target battery voltage is greater than or equal to the target switching threshold, performing charging adjustment on the target battery according to the target constant voltage and the target switching threshold to obtain a final battery, and completing intelligent charging adjustment. The safety and stability of the charging process can be improved, and the service life of the battery is prolonged.

The invention discloses a modification method of a lithium iron phosphate positive electrode material, which comprises the following steps: (1) mixing lithium iron phosphate with a mixed solution of isopropanol and deionized water, and stirring to obtain a solution I; (2) dissolving a lithium-containing compound, a titanium-containing compound and a phosphorus-containing compound in isopropanol to obtain a solution II; (3) slowly dropwise adding the solution II into the solution I, continuously stirring for 3 hours, and then carrying out spray drying to obtain powder; and (4) finally, carrying out heat treatment on the powder material to obtain the lithium iron phosphate coated with lithium titanium phosphate on the surface. According to the invention, the surface of the lithium iron phosphate is coated with a layer of lithium titanium phosphate through a wet coating method, so that the contradiction problem between the compaction density and the electric capacity exertion of the lithium iron phosphate is solved, the compaction density of the lithium iron phosphate is not influenced, the electric capacity exertion is remarkably improved, and the comprehensive performance of the lithium iron phosphate is improved.

The utility model discloses a silicon capacitor electrode structure and a silicon capacitor, which can further improve the capacitance of a capacitor in a limited space by nesting, combining and arranging a plurality of groups of element arrays distributed in a quadrilateral grid mode more reasonably and precisely, so that the capacitor can store more charges.

The invention relates to a multi-region power system capacity configuration determination method considering intra-region and inter-region market joint clearing of a capacity market, and the method comprises the steps: constructing a clearing model for intra-region and inter-region electric energy market joint optimization and a capacity market clearing model, and determining the coupling constraint of the intra-region electric energy market and inter-region power purchase, and establishing a joint clearing model to obtain a double-layer optimization model, and solving the joint clearing model by using a Karush-Kuhn-Tucker condition to obtain a joint optimization scheme of power generation installed capacity configuration of each region, cross-region power transmission capacity distribution and system reserve capacity configuration. According to the method, the capacity market, the intra-regional electric energy market and the inter-regional electric energy market are comprehensively considered, so that combined clearing of the electric energy market and the capacity market is realized on the premise of ensuring the stability of the power system, and optimal configuration of resources and coordinated clearing of the electric energy market and the capacity market are realized in the regional market range; and technical support is provided for combined stable operation of a future capacity market and an electric energy market.

The invention discloses a preparation method of high-rate fast-charging graphite from a semi-calcined coke raw material, and belongs to the technical field of batteries, and the preparation method comprises the following steps: S1, crushing and shaping the semi-calcined coke raw material; s2, carrying out graphitization high-temperature treatment on the crushed and shaped semi-calcined coke; s3, mixing and coating the semi-calcined coke subjected to graphitization high-temperature treatment with a coating agent; s4, performing high-temperature carbonization heat treatment on the semi-calcined coke mixed and coated with the coating agent; s5, screening the petroleum coke semi-calcined coke subjected to high-temperature carbonization heat treatment to obtain a semi-calcined coke raw material high-rate fast-charging graphite; the material has the advantages of large discharge capacity, good cycle performance, good electrochemical performance, high discharge plateau and plateau retention rate, good large-current charge-discharge performance, good safety, good adaptability to electrolyte and other additives, stable product properties, almost no difference between batches, simple and feasible preparation method, and suitableness for industrial production.

The invention relates to the technical field of storage battery self-diagnosis evaluation and risk early warning, and particularly discloses an intelligent self-diagnosis evaluation and risk early warning method and system for a storage battery. Comprising the steps of diagnosis window signal generation, transient discharge state starting, current compensation instruction generation, stable compensation current formation, gain load adjustment, performance data packet generation, real-time safety monitoring and storage battery comprehensive health assessment. A transient discharge state is started after a stable load period is identified, actual discharge current is sampled at high frequency, dynamic stable compensation current is generated, discharge duration, a single voltage curve and a temperature change rate are synchronously acquired, a multi-dimensional performance data packet is generated, and a safety threshold value is compared in real time to trigger a diagnosis termination mechanism. And finally, by associating the actual discharge capacity with the voltage dispersion, the drop rate and the temperature rise amplitude, issuing an evaluation report containing a capacity conclusion and predictive risk early warning. Accurate assessment and risk pre-management and control of the health state of the storage battery are realized.

The invention provides a charging strategy lithium precipitation boundary window evaluation method and system, and belongs to the field of lithium ion batteries. The method comprises the following steps: manufacturing a lithium ion battery comprising a positive pole piece, a negative pole piece, a diaphragm and an electrolyte; performing a rate charging test on the lithium ion battery at a set rate to obtain constant-current charging capacity and constant-current and constant-voltage charging capacity of the battery under different rates, and calculating a constant-current charge-in ratio; calculating the maximum SOC when the battery cell reaches the lithium precipitation boundary under different charging rates, and formulating a stepped charging strategy according to the maximum SOC; and according to the obtained stepped charging strategy, carrying out a cell charging and discharging cycle test, and judging the lithium precipitation condition of the cell. The method does not need to depend on a three-electrode tool and a special battery device, the lithium precipitation boundary window can be rapidly and efficiently evaluated, the established charging strategy can ensure that lithium precipitation does not occur in the battery cell under the rapid charging condition, and the rapid charging strategy establishment efficiency and the cycle performance and safety of the battery are remarkably improved.

The invention provides a medium-voltage alternating-current voltage regulating device and a control method, and relates to the technical field of circuits, and the medium-voltage alternating-current voltage regulating device comprises a transformer, at least one power conversion module, a main controller and at least one bypass module. The power conversion module comprises a first inverter bridge arm, a second inverter bridge arm, a third inverter bridge arm, a first inductor, a second inductor, a third inductor and a capacitor bank. When the voltage of the medium-voltage power grid is too high or too low, the power conversion module automatically compensates the voltage of the power grid, so that the voltage is recovered to a normal range. The medium-voltage alternating-current voltage regulating device is large in regulating range, can effectively stabilize the power supply voltage of a medium-voltage power grid, has the effects of high response speed, low cost, high reliability and convenience in maintenance, and can effectively improve the power transmission capacity of the medium-voltage power distribution network.

The invention relates to the field of power system equipment detection, in particular to a residual magnetism measuring device and method for a large power transformer. The residual magnetism measuring device for the large-scale power transformer comprises the large-scale power transformer, a high-voltage bushing, a high-voltage neutral point bushing, a low-voltage bushing, an iron core outgoing line bushing, a first capacitor, a second capacitor, a detection impedor, a partial discharge instrument and a large-current generator, the capacitance of the first capacitor is 30pf-40pf and is matched with the capacitance of a transformer iron core, and the capacitance of the second capacitor is 300pf-400pf and is 10 times proportional to the capacitance of the first capacitor; the method comprises the following steps: carrying out a long-time induction withstand voltage and partial discharge test after a conventional test, measuring discharge amounts Q1, Q2 and Q3 at 0.5, 1 and 1.5 times of rated voltages, judging residual magnetism according to the difference value of the discharge amounts and an iron core grounding current, and if the residual magnetism exceeds the standard, magnetizing and demagnetizing by using a large current generator at the frequency of 150Hz. The method has the advantages that the residual magnetism is measured and evaluated in time, equipment faults are avoided, operation is easy and convenient, and adaptability is high.

The invention discloses a lithium ion battery capacitance detection method, which comprises the following steps: constructing a first training model containing association of charging and discharging data and ultrasonic characteristics based on a calibrated battery, and accurately utilizing ultrasonic feedback information to analyze internal characteristics of the battery; when a tested battery is analyzed, a spatial distribution and energy propagation characteristic correlation model is obtained by means of the model, and the change conditions of an internal structure and a propagation path can be rapidly judged, such as abnormities of electrode material falling, diaphragm damage and the like; and meanwhile, the internal first capacity is flexibly determined by integrating the ultrasonic characteristic contribution and the second capacitance data, so that the actual charge-discharge performance of the battery is considered, the potential of the ultrasonic characteristics for capacity evaluation is deeply excavated, and the accuracy and reliability of the internal state evaluation of the battery are effectively improved.

The invention discloses a capacitor pin intelligent conveying full-automatic precise angle cutting machine, and belongs to the technical field of electronic element automatic processing equipment. Through cooperative operation of core components such as a main mounting base, an auxiliary mounting base, a first vibration feeder, a transfer clamping jaw, a pin separating guide frame and a reset spring, the automatic processing of electronic elements is realized; the full-process automation of the capacitor from conveying, cleaning, double-station capacity detection, precise pin cutting, ink printing, ultraviolet curing, 120-180-degree stepped pin separation, capacitance detection to visual sorting is realized. Wherein a second reset spring ensures rapid reset of the detection seat, synchronous control of the transfer clamping jaw and the liftable rotary workbench realizes seamless connection of procedures, finally high-precision pins are produced, pin angle consistency, pin cutting length precision and production efficiency are remarkably improved, manual missing detection is thoroughly eliminated through closed-loop quality control, and production efficiency is improved. And the problems of efficiency, precision and quality control of capacitor pin processing are systematically solved.

The application discloses a low-driving-potential aluminum alloy sacrificial anode for a seawater cooling water system, which comprises a sacrificial anode body and a core, the core is wrapped in the sacrificial anode body, the sacrificial anode body is mainly composed of aluminum, and gallium, tin, antimony and copper are added, the weight percentage of each component is as follows: 0.3-0.5% of gallium, 0.01-0.1% of tin, 0.005-0.02% of antimony, 0.01-0.1% of copper, less than or equal to 0.06% of impurity iron, and the balance of aluminum. The working potential of the low-driving-potential aluminum alloy sacrificial anode for the seawater cooling water system is-0.75V to-0.90V (relative to a saturated calomel electrode), the electric capacity is greater than or equal to 2300 Ah / kg, the sacrificial anode surface dissolves uniformly, the corrosion product is easy to fall off, and the low-driving-potential aluminum alloy sacrificial anode is suitable for cathode protection of high-strength steel, titanium-steel composite structure, stainless steel and other materials in a seawater environment. The application further discloses a preparation method of the low-driving-potential aluminum alloy sacrificial anode for the seawater cooling water system.

Myriad problems with state of the art lithium based batteries, particularly electrolyte systems thereof, including but not limited to polysulfide shuttling, formation of lithium dendrites and dead lithium during stripping and plating, thermal runaway, volumetric expansion, and strict requirements for electrolyte composition, are well documented in the art and remain major obstacles to realizing the unsurpassed potential for lithium-based batteries as ideal energy storage solutions. The inventive concepts presented herein address said challenges from a multi-pronged approach, revolutionizing the electrolyte system from different approaches to produce synergistic benefits, both within the individual approaches and particularly in combination. The inventive concepts improve electrolyte systems with respect to solvents, electron withdrawing compounds, lithium ion-transporting compounds, performance enhancing additives and chalcogenides. These developments provide benefits including: improved charge / discharge capacity, Coulombic efficiency, cycle life, sulfur optimization, oxidative stability, etc. while reducing polysulfide shuttling and lithium dendrite formation, among other benefits.

The present application relates to the technical field of information, and provides a lid open / close detection method. The method comprises: in each detection cycle, sending a driving signal to a first touch electrode of a touchpad or a second touch electrode of a touch screen, and detecting a mutual capacitance generated between the first touch electrode and the second touch electrode; on the basis of the mutual capacitance and a first mapping relationship, determining a folding angle range of an electronic device, the first mapping relationship representing correspondences between capacitances and folding angle ranges; and on the basis of the folding angle range of the electronic device, determining a lid open / close state of the electronic device. By using the method to detect the mutual capacitance between the touchpad and the touch screen of the electronic device, lid open / close detection for the electronic device can be implemented, effectively improving the efficiency of lid open / close detection while reducing costs.

The invention discloses an electric vehicle freight planning system based on a charging and battery replacement hybrid strategy. The electric vehicle freight planning system comprises a network construction module, an optimization model module and an algorithm solving module. The network construction module conducts modeling through a space-time convolution network, time is dispersed into a plurality of time points, space is defined as freight station nodes, and a charging arc, a service arc and a convolution arc are constructed. And the optimization model module establishes a mixed integer programming model based on the network, wherein a target function minimizes the total transportation cost, and constraint conditions comprise commodity flow balance, transport capacity limitation, purchase budget and power conversion capacity constraint. The algorithm solving module adopts a column generation algorithm to generate a path ring, and solves a sub-problem in combination with multi-dimensional dynamic programming; the dynamic planning transmits and updates the electric quantity state through hierarchical labels, and applies a dominating rule to screen a non-inferior solution path. The system intelligently triggers battery replacement or charging according to the electric quantity state, optimizes an electric truck energy complementing strategy and a freight path, improves the transportation efficiency, reduces the energy consumption cost, reduces the unloaded driving time, and improves the utilization rate of a motorcade.

The invention relates to the technical field of sensors, and discloses a capacitive touch detection circuit and method.The capacitive touch detection circuit comprises a charge compensation module, a voltage and current conversion module, an integrating capacitor, a quantization circuit module and a counter; the charge compensation module is used for performing charge and discharge compensation on the external touch capacitor and adjusting the charge quantity on the touch capacitor to be within a preset charge quantity range corresponding to the reference voltage; the voltage and current conversion module is used for converting residual charges on the touch capacitor compensated by the charge compensation module into current and outputting the current; the integrating capacitor is used for integrating the current to obtain an integrated voltage; the quantization circuit module is used for quantizing the integral voltage and controlling the integral voltage to be stabilized in a preset voltage range of the reference voltage; and the counter is used for counting the output of the quantization circuit module to obtain a digital code representing a touch capacitance value. According to the invention, the touch detection performance with high linearity, low power consumption, small area and high noise resistance can be realized.

Myriad problems with state of the art lithium based batteries, particularly electrolyte systems thereof, including but not limited to polysulfide shuttling, formation of lithium dendrites and dead lithium during stripping and plating, thermal runaway, volumetric expansion, and strict requirements for electrolyte composition, are well documented in the art and remain major obstacles to realizing the unsurpassed potential for lithium-based batteries as ideal energy storage solutions. The inventive concepts presented herein address said challenges from a multi-pronged approach, revolutionizing the electrolyte system from different approaches to produce synergistic benefits, both within the individual approaches and particularly in combination. The inventive concepts improve electrolyte systems with respect to solvents, electron withdrawing compounds, lithium ion-transporting compounds, performance enhancing additives and chalcogenides. These developments provide benefits including: improved charge / discharge capacity, Coulombic efficiency, cycle life, sulfur optimization, oxidative stability, etc. while reducing polysulfide shuttling and lithium dendrite formation, among other benefits.

The embodiment of the invention provides an alternating current charging pile system with an ordered charging function and a charging pile power control method. The method comprises the following steps: acquiring real-time charging information of each charging pile in a plurality of target stations and total capacity data of a power grid transformer to which each target station belongs; a plurality of target area power supply capacity threshold values are determined, and the target area power supply capacity threshold values are used for representing the power utilization demand condition of the non-charging service of the power supply area of the power grid transformer in the current time period; and for each target station, determining and issuing power control information to each charging pile in the target station according to the total capacity data corresponding to the target station, the plurality of pieces of real-time charging information and the power supply capacity threshold of the target area. According to the embodiment of the invention, the regional power adjustment capability of the charging pile can be improved.

The invention relates to a production process of a high-stability anhydrous aluminum electrolytic capacitor and the capacitor manufactured by the same, and the capacitor is manufactured by the following method: activating electrolytic paper: activating the surface of the electrolytic paper by adopting an activating agent containing a polyethylene glycol derivative, and removing a solvent to obtain activated electrolytic paper; the activated electrolytic paper, the anode foil, the activated electrolytic paper and the cathode foil are sequentially stacked and wound into a columnar core structure, in the process, the aluminum pad leading-out piece is riveted to the two electrode foils, and an element A is obtained; dipping: dipping the element A in the anhydrous electrolyte, so that the element A is fully dipped in the anhydrous electrolyte to obtain an element B; and assembling: assembling the element B, a shell, a sealing plug and an electronic component to obtain the anhydrous aluminum electrolytic capacitor. Through activating treatment, the adsorption efficiency of the element A on the water-free electrolyte is improved, meanwhile, the phenomenon that under the extreme condition, the capacitance is likely to be reduced can be reduced, and the durability of the element A is improved.

The invention belongs to the technical field of energy storage equipment, and discloses multifunctional energy storage equipment which comprises an energy storage main body and a functional module, the energy storage main body comprises a shell and an energy storage module arranged in the shell, a guide part and a limiting part are arranged on the outer side wall of the shell, the guide part is parallel to the outer wall surface of the shell, and the limiting part is arranged on the outer wall surface of the shell. The functional module can slide along the guide part; when the functional module slides to the first position, the functional module is detachably connected with the limiting part; and when the functional module slides to the second position, the functional module is separated from the guide part. The multifunctional energy storage equipment provided by the invention can meet diversified requirements of users, is high in use flexibility, does not occupy the internal space of the energy storage main body, and avoids affecting the capacitance and the structural compactness of the energy storage main body.

Myriad problems with state of the art lithium based batteries, particularly electrolyte systems thereof, including but not limited to polysulfide shuttling, formation of lithium dendrites and dead lithium during stripping and plating, thermal runaway, volumetric expansion, and strict requirements for electrolyte composition, are well documented in the art and remain major obstacles to realizing the unsurpassed potential for lithium-based batteries as ideal energy storage solutions. The inventive concepts presented herein address said challenges from a multi-pronged approach, revolutionizing the electrolyte system from different approaches to produce synergistic benefits, both within the individual approaches and particularly in combination. The inventive concepts improve electrolyte systems with respect to solvents, electron withdrawing compounds, lithium ion-transporting compounds, performance enhancing additives and chalcogenides. These developments provide benefits including: improved charge / discharge capacity, Coulombic efficiency, cycle life, sulfur optimization, oxidative stability, etc. while reducing polysulfide shuttling and lithium dendrite formation, among other benefits.

The present invention discloses a battery dynamic balancing device, a control method thereof, and a vehicle. The device includes: a power battery; a motor controller; a DC charge / discharge port; and a controller connected to the motor controller. The controller is configured to: in a first preset state, charge the power battery via the DC charge / discharge port and control a bridge arm of the motor controller to cause a first battery pack and a second battery pack to alternately charge and discharge, thereby achieving self-heating of the first and second battery packs and causing the absolute value of the difference between the capacitance of the first and second battery packs to fall below a preset threshold. The balancing device of the present invention can achieve dynamic balancing of the charge between the first and second battery packs during the self-heating process while the power battery is charging, thereby improving battery performance and extending battery life.

The invention discloses a dual-unit C-2C weighted multi-bit in-memory computing architecture based on a FeFET (FeFET) and a working method of the dual-unit C-2C weighted multi-bit in-memory computing architecture. The framework comprises double-unit modules which are arranged in a matrix, wherein each module comprises two basic units, namely H-Cell and L-Cell. Each unit comprises FeFET tubes F1 and F2 which are connected in series, a PMOS tube M1 which is connected with F2 in parallel, and a storage capacitor of which the positive electrode is connected with the source electrode of F1 / the drain electrode of F2 / the source electrode of M1 and the negative electrode is connected with an output line. And the capacitance of a storage capacitor of the H / L-Cell is 2C0 / C0. F1 / F2 / M1 grids of the H-Cell in the same row are respectively connected with a control line WL1 / WL2 / INR, and F1 / F2 / M1 grids of the L-Cell are respectively connected with a control line RWL1 / RWL2 / RINR so as to form row driving. The F1 drain electrodes of the H-cells in the same column are jointly connected with a bit line BL, and the F1 drain electrodes of the L-cells are jointly connected with a bit line RBL, so that column interconnection is formed. And the high-bit weight column and the low-bit weight column are weighted through a C-2C network. The storage state of the unit can be accurately detected in one operation, the clock cycle length is shortened, the reading power consumption is reduced, and the good linearity of an output quantization result is guaranteed through a capacitance weighting mode.