311 results about "Single electrode" patented technology

The invention belongs to the field of electrochemical biosensors, discloses a preparation method of an electrochemical biosensor capable of being used for multi-mode sweat detection, and particularly provides a single-electrode multifunctional arrangement method in a three-electrode system. A sensor material with high sensitivity and high selectivity is prepared, then the sensor material is printed through screen printing and assembled into a portable device to achieve simultaneous detection of multiple biomarkers in sweat, and the preparation method comprises the steps of selection and modification of an electrode material, sensor assembly and integration of a signal acquisition and analysis system. Through innovative material design and process optimization, the sensor not only can acquire information of various biomarkers in sweat in real time, but also can provide reliable data analysis, and shows excellent long-term stability and anti-interference capability in practical application. The technology provides an effective and reliable solution for real-time health monitoring.

The invention relates to a device for performing electric field treatment on a digestive tract, which comprises a support body, an electrode array film and a pulse generator, an electrode is coupled to the pulse generator through an electrode lead embedded in a film body, an electric heating wire is further embedded in the film body, and the electric heating wire is connected with the support body. The heating wire is coupled to a pulse signal output end of the pulse generator through a heating wire lead embedded in the membrane body, at least one electric connection point is arranged between the heating wire and the electrode on the electrode array membrane, and a voltage signal between the heating wire lead and the electrode lead serves as a temperature sensing signal. The temperature sensing circuit and the electric heating circuit are integrated, the circuit is simple, and leads on the electrode array film are reduced.

The invention discloses a preparation method and application for directly growing CuCoO2 on foamed nickel, and the preparation method comprises the following steps: dissolving copper nitrate, cobalt nitrate and a mineralizer in a solvent, intensely stirring to form a suspension A, then transferring the suspension A into a high-pressure kettle, and carrying out vacuum drying to obtain CuCoO2; meanwhile, the foamed nickel is placed in a polytetrafluoroethylene flower basket and then placed in an autoclave to be heated for a hydrothermal reaction, and after the hydrothermal reaction is finished, the foamed nickel is cooled to the room temperature. According to the method, the CuCoO2 electrode with the foamed nickel substrate can be prepared in one step, compared with a method for preparing CuCoO2 powder and then transferring the CuCoO2 powder to an electrode plate, the needed time is short, operation is easy, the electrode material is uniform, and the method can be widely applied to related fields as an efficient photoelectric functional material electrode preparation method.

The invention provides a battery monomer, a battery, a power utilization device and an energy storage cabinet, and belongs to the technical field of batteries. A battery cell includes a housing, a first electrode terminal, a first current collecting member, and a plurality of electrode assemblies. The housing has a wall portion. The first electrode terminal is attached to the wall portion. The plurality of electrode assemblies are accommodated in the shell, the plurality of electrode assemblies are stacked along a first direction, each electrode assembly comprises a main body part and a first tab, the first tab is arranged at one end of the main body part along a second direction, the first tabs of the plurality of electrode assemblies are positioned at the same end of the main body part, and the second direction intersects with the first direction. The first current collecting member electrically connects the first electrode terminal and each of the first tabs. Therefore, a plurality of first current collecting components do not need to be arranged in the shell to be connected with the first tabs of the plurality of electrode assemblies, and the thickness or the volume of the single electrode assembly does not need to be increased, so that the manufacturing difficulty of the electrode assemblies can be effectively reduced, and the manufacturing difficulty of the large-capacity battery monomer is reduced.

The invention belongs to the field of functional material preparation, and particularly relates to a preparation method of a silicon-yttrium-carbon composite lithium ion battery negative electrode material, which comprises the following steps: (1) dispersing silicon nanoparticles, polyvinylpyrrolidone and yttrium salt in a deionized water solution to form a mixed solution, carrying out ultrasonic vibration dispersion, and then carrying out magnetic stirring in a room temperature air atmosphere; (2) transferring the obtained solution to a glass culture dish, and performing freeze drying in a freeze dryer; (3) transferring the precursor obtained by drying into a crucible, and placing the crucible in a tubular furnace for high-temperature calcination to obtain a silicon-yttrium-carbon composite material; and (4) grinding and mixing the obtained product with sodium alginate, conductive carbon black and deionized water respectively, uniformly coating the surface of a copper foil with the mixture, and then performing drying, slicing and tabletting treatment to obtain a target product. The preparation method is simple in synthesis process, good in electrode cycling stability, stable in structure and excellent in electrochemical performance.

The invention relates to a single bacterium separation method based on a digital micro-fluidic system, which comprises the following steps: injecting diluted bacterium liquid into a digital micro-fluidic chip to form bacterium liquid drops with 2 < N > power as electrode bases, and distributing 18-22 bacteria per 64 electrode bases in each bacterium liquid drop; the liquid drops with the same volume are controlled to move in the opposite direction, and half-and-half tearing is carried out; according to the mode, the liquid drops after half-and-half tearing are subjected to half-and-half tearing again, N rounds are carried out in total, and 2 < N > single-electrode liquid drops are formed; the single bacterium liquid drops are obtained. The separation method has the advantages that the separation efficiency is high, the separation speed is high, the separation flux is high, and the final separation success rate can reach 100%, and the single-bacterium separation method can be well applied to bacterium culture, polypeptide drug or antibody screening and genomics analysis in a digital microfluidic system.

The invention relates to the technical field of medical apparatus and instruments, in particular to an intelligent suture line with electrical stimulation and drug release synergism and a preparation method thereof. The preparation method of the intelligent suture line with synergistic electrical stimulation and drug release comprises the following steps: fully dissolving a high polymer in an organic solvent to obtain a high polymer solution; and mixing the conductive polymer nanoparticles, a stabilizer, a dopant and a micromolecular anti-inflammatory drug to obtain conductive polymer coated drug particles. Uniformly mixing with a high polymer solution to obtain an electrostatic spinning precursor solution; the electrostatic spinning precursor solution and a metal wire are prepared through an electrostatic spinning machine, and then the intelligent suture line is prepared. The prepared intelligent suture line generates inductive charges or alternating current under external stimulation based on a single-electrode mode of a friction nano-generator, realizes control of release of small-molecule drugs and also can generate an alternating electric field to realize electrical stimulation treatment, and can promote rapid healing of wounds under the mutual synergistic effect of the inductive charges and the alternating electric field.

The invention provides a single-electrode silica gel sheet test circuit, device and method for physical therapy. The single-electrode silica gel sheet test circuit comprises a microcontroller, a Darlington tube array chip circuit, a relay array, a signal conditioning circuit and the like. The microcontroller controls the Darlington array to amplify low-power signals, drives the relay array to achieve selection of different test paths, collects and processes test data, and transmits the test data to the computer through a serial port. The relay array alternately switches paths to complete each test item; the signal conditioning circuit is used for adjusting a test signal to meet the AD sampling requirement; the digital control analog switch realizes multiplexing of multiple paths of signals, and a single AD port acquires multiple paths of signals; and the state indicating circuit displays the test result and gives an alarm prompt. The system is specially used for a single electrode plate test scheme, the installation complexity can be remarkably reduced, the stability is improved, and the efficiency is greatly improved.

The utility model belongs to the technical field of batteries, and discloses a single battery and a battery pack. The single battery comprises a fixed frame and a plurality of electrode assemblies, connecting tabs are arranged at two ends of each electrode assembly along a first direction, and the plurality of electrode assemblies are connected in series end to end along the first direction; the connecting tabs close to each other in two adjacent electrode assemblies are in lap joint with each other, an accommodating groove is formed in the end part, close to the other electrode assembly, of one electrode assembly, and the two connecting tabs which are in lap joint with each other are accommodated in the accommodating groove; the fixing frame is arranged on the periphery of the electrode assemblies in a surrounding mode, and a containing cavity for containing the electrode assemblies is formed. According to the single battery, the battery core in the single battery is divided into a plurality of electrode assemblies, so that the length of the single electrode assembly can be reduced, undesirable phenomena such as surface wrinkles, deformation, layer channeling and breakage caused by overlong electrode assemblies are avoided, and meanwhile, the fixed frame is used for fixing the connected electrode assemblies, so that the use safety of the single battery is improved.

The invention provides an arc-shaped battery, the arc-shaped battery comprises a battery cell, the battery cell comprises a first side and a second side which are oppositely arranged along a first direction, and the second side of the battery cell bends towards the first side of the battery cell; the battery cell comprises a diaphragm and pole pieces, the pole pieces comprise a positive pole piece and a negative pole piece, the diaphragm comprises a plurality of diaphragm layers arranged along a first direction, and a single pole piece is clamped between two adjacent diaphragm layers; each diaphragm layer comprises first side edges which are oppositely arranged in the second direction, in the three adjacent diaphragm layers, the first side edge of the first diaphragm layer is adjacent to the first side edge of the second diaphragm layer, and the second side edge of the second diaphragm layer is adjacent to the second side edge of the third diaphragm layer; a notch is formed between every two adjacent first side edges, a notch is formed between every two adjacent second side edges, and the notches extend in the third direction. The diaphragm of the arc-shaped battery is not easy to wrinkle and accumulate.

A burr detection apparatus (10) and a stacking device, wherein the burr detection apparatus (10) comprises a conveying mechanism (100), a pre-positioning mechanism (200), an electrode sheet grabbing mechanism (300), and a visual detection mechanism (400). An electrode sheet (20) carried by the conveying mechanism (100) is conveyed downstream and then transferred to a pre-positioning platform (210) by the electrode sheet grabbing mechanism (300) prior to a stacking operation. The visual detection mechanism (400) can then acquire image information of cut edges of the electrode sheet (20), so as to determine whether burrs exceed a permissible limit. Electrode sheets (20) with unacceptable detected burrs are removed, while acceptable electrode sheets (20) are moved to a stacking table by a stacking manipulator for stacking. Because detection cameras (410) on two sides are able to acquire image information of two cut edges of an electrode sheet (20) at the same time, and each detection camera (410) is driven by a driving assembly (420) to move along an edge of the pre-positioning platform (210), the detection speed for burrs on a single electrode sheet (20) is relatively fast. Once cut, the electrode sheet (20) is successively subjected to operations including conveying, burr detection, and stacking, with each process being seamlessly linked. Therefore, the burr detection apparatus (10) and the stacking device are able to effectively improve production efficiency.

The invention relates to the technical field of automotive electronics, and provides a capacitive single-electrode-based steering wheel hand separation detection implementation device which comprises a main control unit, a capacitive sensor and a heating control circuit. Wherein the heating control circuit comprises a steering wheel heating wire, the steering wheel heating wire is reused as an induction electrode of the capacitive sensor, and the main control unit is electrically connected with the heating control circuit and controls the current of the steering wheel heating wire; the main control unit is electrically connected with the capacitive sensor and receives a capacitance change signal of an induction electrode of the capacitive sensor; and judging whether capacitance drift exists or not according to the capacitance change signal at a first moment when the hand-leaving detection is started, adjusting a judgment threshold value of the hand-leaving detection, and turning off the heating control circuit, and at the second moment when the hand-off detection is closed and the heating instruction exists, whether the real-time temperature reaches a preset temperature threshold value or not is judged according to the capacitance change signal, and the heating control circuit is controlled to be switched on to execute heating and turn-off of the hand-off detection.

The invention discloses a dual-electrode-based high-sensitivity differential pressure ceramic capacitive sensor and a measurement method thereof, and belongs to the technical field of pressure sensors. The sensor comprises a ceramic substrate, a dual-electrode structure, a differential pressure sensitive diaphragm and a signal processing module. The two electrodes are symmetrically distributed on the two sides of the diaphragm, when the diaphragm is subjected to the differential pressure effect on the two sides, capacitance changes reversely, high-sensitivity detection of the differential pressure is achieved through a differential calculation formula, and the sensitivity is improved by two times compared with a single electrode. And the ceramic plate integrates an overvoltage protection function, so that the diaphragm is prevented from over-limit deformation. The design solves the problems that a traditional sensor is low in sensitivity and weak in interference resistance in tiny differential pressure detection, and can be widely applied to the fields of industrial pressure monitoring, automobile differential pressure control, new energy battery thermal management and the like. And the reliability and the precision are remarkably improved by a dual-electrode differential structure and an overvoltage protection mechanism, and an innovative scheme is provided for the design of a high-cost-performance capacitor core body.

The invention discloses a brain age prediction method based on neural spectrum information cross-electrode characterization learning, which comprises the following steps of: preprocessing EEG (electroencephalogram) data of each electrode channel in a plurality of tested electrode channels to obtain a power spectrum density PSD at the frequency of 1-20Hz; the PSD under the frequency of 1-20 Hz is used for calculating electroencephalogram neurogram characteristics of each electrode channel, wherein the electroencephalogram neurogram characteristics comprise an aperiodic parameter AF, a periodic parameter PF, a power ratio PR, relative energy RE and kurtosis KUR; taking the electroencephalogram neural spectrum characteristics of each electrode channel as frequency spectrum information independently represented by a single electrode, and depicting a similarity relation matrix of cross-electrode mutual representation of the neural spectrum characteristics of all the electrodes through a sparse linear regression method; and finally, constructing a full-connection multi-layer neural network, learning a mapping relation between a similarity matrix represented by the single-electrode neural spectrum characteristics and the inter-electrode neural spectrum characteristics of the tested person and the brain age, and predicting the brain age of the tested person according to the cross-electrode neural spectrum characteristics and the neural network.

The present invention discloses a brain age prediction method based on cross-electrode representation learning of neural spectrum information, comprising: preprocessing EEG data of each electrode channel in a subject's multi-electrode channels to obtain a power spectrum density PSD at a frequency of 1-20 Hz; using the PSD at a frequency of 1-20 Hz to calculate the EEG neural spectrum features of each electrode channel, including a non-periodic parameter AF, a periodic parameter PF, a power ratio PR, a relative energy RE and a kurtosis KUR; using the above-mentioned EEG neural spectrum features of each electrode channel as the spectrum information independently represented by a single electrode itself, and characterizing the cross-electrode mutual representation similarity relationship matrix of all electrode neural spectrum features through a sparse linear regression method; finally, constructing a fully connected multi-layer neural network, learning the mapping relationship between the subject's single-electrode neural spectrum features and the similarity matrix of the neural spectrum features between electrodes and the brain age, and predicting the subject's brain age based on the above-mentioned cross-electrode neural spectrum features and the neural network.

The utility model provides a semiconductor device comprising a trench capacitor structure and a forming method thereof. Using a multi-electrode connection including the use of conductive sidewall layers, the interconnect structure may be connected with a plurality of vertically arranged electrode layers of the trench capacitor structure. The connection of a plurality of vertically arranged electrode layers can increase the effective thickness of the connection pad for the interconnect structure compared to the connection using a single electrode layer. The increased effective thickness can reduce the likelihood that vertical interconnect access is generated in the metal structure of the trench capacitor structure to induce metal island corrosion defects.

The utility model belongs to the inductance technical field discloses a kind of electrode sheet for copper iron co-fired inductance, including positioning frame and multiple electrode sheet main parts, positioning frame includes main part and multiple branch parts, branch part is integrally formed piece with main part;Electrode sheet main part is set one-to-one with branch part, electrode sheet main part is U-shaped, the both ends of U-shaped electrode sheet main part are connected with the end of corresponding branch part away from main part, and branch part is provided with pre-break slot at the connecting place with electrode sheet main part.Through the positioning frame, avoid the problem of single electrode sheet deviation, improve the feeding efficiency and pressing efficiency of the magnetic core, while reducing the cost of equipment layout and production cost.

A resistance calculation device includes: a characteristic calculation portion configured to calculate a shrinkage rate for each single electrode based on a capacity shift amount of a positive electrode of a deteriorated secondary battery, a capacity shift amount of a negative electrode of the deteriorated secondary battery, a deterioration amount of the positive electrode, and a deterioration amount of the negative electrode, and to calculate a curve representing characteristics of a state of charge and an open circuit voltage of an equivalent circuit of the deteriorated secondary battery by deforming an opening end potential curve for each single electrode before deterioration of the deteriorated secondary battery by the shrinkage rate for each single electrode based on a fixed point; a change amount calculation portion configured to calculate an amount of change in the open circuit voltage of the equivalent circuit based on a difference between the opening end potential curve for each single electrode before the deterioration and the curve representing the characteristics of the state of charge and the open circuit voltage of the equivalent circuit; and a resistance calculation portion configured to calculate a DC resistance of the equivalent circuit by dividing a result of addition of an amount of change in a DC voltage of the equivalent circuit to which a pulse current is applied and the amount of change in the open circuit voltage of the equivalent circuit by a current value when the pulse current is applied to the equivalent circuit.

The utility model provides an electrode clamping device of a multi-electrode electric arc furnace, which comprises a base part and a clamping arm, the clamping arm is connected with the base part, the base part supports the clamping arm and drives the clamping arm to move up and down, the clamping arm is provided with an arm head, the arm head is arranged at the end part of the clamping arm, and the arm head comprises a box body, independent regulators are arranged in the box body and correspond to the electrodes in number, the lower portion of each independent regulator is connected with a transition part, the electrodes are connected through the transition parts, movement of a single electrode is regulated through the independent regulators, and on the basis that the clamping arms drive the multiple electrodes to move synchronously, each electrode is provided with one independent regulator. According to the furnace charge melting condition, the operation state of a single electrode is finely adjusted through an independent regulator, and electrode abrasion is reduced.

The invention discloses an electrolysis circuit with an exchange electrode, which belongs to the technical field of electrolysis water production and comprises a switching power supply, a constant current source module, an MCU (Microprogrammed Control Unit), a first electrode, a second electrode and an electrode switching module, the output end of the switching power supply is electrically connected with the input end of the constant current source module; the electrode switching module comprises a relay assembly, the reverse pole control output end of the MCU is electrically connected with the output end of the switching power supply through a coil of the relay assembly, and the positive pole output end and the negative pole output end of the constant current source module are electrically connected with a first electrode through a normally-closed contact and a normally-open contact of a first contact set respectively. The negative electrode output end and the positive electrode output end of the constant current source module are electrically connected with the second electrode through a normally-closed contact and a normally-open contact of the second contact set respectively. The electrolytic circuit with the exchange electrode solves the problem that scale is formed due to the fact that a single electrode uses direct current with the same polarity for a long time.

The invention relates to the technical field of smelting furnaces, and particularly discloses a hollow single-electrode direct-current smelting furnace for corundum smelting, which comprises a bottom electrode assembly, a furnace body assembly, a furnace cover assembly and a hollow electrode assembly, the bottom electrode assembly is connected with a direct-current power supply anode, the furnace body assembly is mounted on the bottom electrode assembly, and the furnace cover assembly is mounted on the furnace body assembly. The furnace body assembly is provided with a product flowing and discharging opening, a material plug is arranged in the product flowing and discharging opening, the furnace cover assembly is installed on the furnace body assembly, an exhaust pipe is arranged on the furnace cover assembly, the hollow electrode assembly penetrates through the furnace cover assembly and is communicated with the furnace body assembly, and the hollow electrode assembly is in sliding fit with the furnace cover assembly. The hollow electrode assembly is connected with the cathode of the direct-current power supply, and an electrode clamping and lifting mechanism is arranged on the hollow electrode assembly. The method is high in smelting efficiency, reduces energy consumption and cost, is environment-friendly, and effectively guarantees the health and safety of operators.

The present invention discloses a multi-scale electromagnetic exploration method based on single-electrode potential detection, which relates to the field of exploration geophysical technology. The method includes: determining the measurement area, clarifying the exploration target, and determining the measurement area and measurement point density based on the depth of the exploration target; deploying a number of transmitting sources and receiving arrays in the measurement area to collect surface potential data of the measurement area in real time, and processing the data frequency by frequency according to a preset frequency sequence; generating a surface potential distribution surface based on the single-electrode potential data, constraining and suppressing the field source effect, obtaining electric field distribution information of the measurement surface, and calculating apparent resistivity parameters in combination with magnetic field measurement data; using a multi-directional excitation mode and a multi-source emission scheme to suppress the field source effect, and constructing a three-dimensional resistivity profile to identify low-resistance or high-resistance bodies. The present invention solves the static effect and volume effect, breaking through the limitations of existing electromagnetic instruments on detection accuracy and depth.

The utility model relates to the field of fuel cell electrode signal leading-out, and discloses a fuel cell electrode signal leading-out structure, which comprises a flexible printed circuit (FPC), the FPC is of a multi-layer structure, the FPC adopts a bending wiring mode, and a redundant circuit is arranged on the FPC. An elastic conductive material is used as a connecting medium between the FPC and the electrode, and the elastic conductive material is mounted at a connecting pin of the FPC; a circuit on the FPC is connected with a single electrode of the fuel cell stack through a contact point, and the joint is sealed; the FPC is connected with an external control system through a special FPC connector; the FPC adopts electromagnetic shielding and is provided with a protection device. The scheme can solve the problems of complex wiring, low reliability, high cost and the like in the prior art.

This application provides a single electrode plate, a single cell, and a fuel cell. The single electrode plate includes: an electrode plate body having a first side and a second side disposed opposite to each other; the electrode plate body includes a liquid distribution section, a flow channel section, and a reaction section; the liquid distribution section and the flow channel section are located on the first side, and the reaction section is located on the second side; on a projection plane perpendicular to the thickness direction, the flow channel region and the reaction region overlap; the dimension of the liquid distribution section in the width direction of the electrode plate body is smaller than the dimension of the flow channel section in the width direction of the electrode plate body; the liquid distribution section has a first edge and a second edge disposed opposite to each other; the electrode plate body has a ridge located on the first side of the flow channel section, the ridge extending meanderingly along the length direction of the electrode plate body; there are multiple ridges, and the multiple ridges are spaced apart along the width direction; wherein, the multiple ridges include a first ridge and a second ridge located on the outermost side in the width direction, the first ridge and the second ridge respectively connecting to the first edge and the second edge on the corresponding side.

The utility model relates to an electrode column machine tool feeding device which comprises a machine frame installed on one side of a machine tool, a vibration disc is fixedly installed on the machine frame, and a feeding device used for feeding electrode column blanks into the machine tool is arranged on one side of the vibration disc. A pushing assembly used for pushing the electrode column blanks into the feeding device from the vibration disc is arranged between the feeding device and the vibration disc. And the vibrating disc conveys the electrode column blanks to a discharge hole of the vibrating disc one by one. And then the pushing assembly feeds the single electrode column blank into the feeding device, and the feeding device feeds the single electrode column blank into the machine tool and pushes the electrode column blank into a chuck of the machine tool. And the rear feeding device returns to the initial state. And after machining of the machine tool is completed, the feeding device carries out next-time feeding.

The invention discloses a multi-scale electromagnetic exploration method based on single-electrode potential detection, and relates to the technical field of exploration geophysics, and the method comprises the steps: determining a measurement region, determining an exploration target, and determining the area of the measurement region and the density of measurement points according to the depth of the exploration target; arranging a plurality of emission sources and receiving arrays in a measurement area, collecting surface potential data of the measurement area in real time, and processing the data frequency point by frequency point according to a preset frequency sequence; on the basis of the single-electrode potential data, generating a surface potential distribution surface, constraining and suppressing a field source effect, obtaining electric field distribution information of a measurement surface, and calculating apparent resistivity parameters in combination with magnetic field measurement data; a multi-azimuth excitation mode and a multi-source emission scheme are adopted, a field source effect is inhibited, a three-dimensional resistivity profile is constructed, and a low-resistance body or a high-resistance body is identified. According to the invention, the static effect and the volume effect are solved, and the limitation of the existing electromagnetic instrument on the detection accuracy and depth is broken through.

The present invention discloses a small-sized wavelength tunable semiconductor laser. It comprises two resonant cavities with different optical lengths, both of which comprise a first reflection surface, a polymer imaging coupler and a second reflection surface, and the two resonant cavities are arranged in a straight line along the same axis, and the second reflection surfaces of the two cavities are connected by a deep-etched waveguide to couple the two resonant cavities; the two polymer imaging couplers, the two second reflection surfaces and the deep-etched waveguide constitute a half-wave coupler, which has wavelength selective loss to achieve the best single-mode characteristics, and at the same time achieves wide-range wavelength tuning through the vernier effect. The present invention achieves small-sized tunability of a channel spacing of 400 GHz to 800 GHz through the small volume feature of the polymer imaging coupler, and does not require the production of gratings, simplifies the process, has a simple and compact structure, and is simple to control by tuning the channel through a single electrode, and has the potential to integrate modulators and photodiodes on a chip, and has the advantages of small size, low cost, and wide-range wavelength tunability.

A dilatometer for measuring battery dilation, comprising: a battery cell having a first electrode and a second electrode; an internal magnetic sensing element; and a magnetic force sensor. The internal magnetic sensing element is configured to move in response to expansion of the first electrode during dilation of the battery cell and to remain stationary in response to expansion of the second electrode. The magnetic force sensor is stationary relative to the battery cell and configured to detect a change in magnetic force between the internal magnetic sensing element and the magnetic force sensor. A controller is configured to measure the dilation of the first electrode independently of the dilation of the second electrode based on the change in magnetic force strength between the internal magnetic sensing element and the magnetic force sensor.

The invention discloses an echelon utilization lithium ion battery pack capable of losslessly replacing internal batteries. The echelon utilization lithium ion battery pack comprises a battery pack shell, a top cover, a battery limiting plate, a first electric connecting plate, a second electric connecting plate and an air duct structure, the battery limiting plates sleeve the single battery cells and are bonded with the inner wall of the shell through heat-conducting glue to limit the horizontal displacement of the battery cells; the first electric connecting plate and the second electric connecting plate are respectively propped against two ends of the battery cell and are matched with two types of battery cells, namely single-end single-electrode and single-end double-electrode; air ducts are arranged on the top cover and the bottom plate of the shell and matched with ventilation holes of the electric connecting plate and the limiting plate, and forced convection heat dissipation is achieved under the action of the exhaust device. According to the invention, the failed battery cell can be replaced without damage, the echelon utilization value is improved, the battery cell is compatible with various types, the heat dissipation is efficient, and the adaptability is strong.

In order to solve the problems of poor drying and dewatering consistency, long baking time and high energy consumption of battery cell baking equipment in the prior art, the utility model provides a battery cell baking device which is used for baking moisture of a battery cell. The battery cell baking device is used for baking and removing moisture of the battery cell; the battery cell baking device comprises a high-temperature gas pipeline, a vacuum pipeline and a plurality of baking units, each baking unit comprises a cavity and a heating plate, each heating plate is arranged in the corresponding cavity, and each battery cell is tightly attached to the corresponding heating plate when being arranged in the corresponding cavity. And the cavity is selectively communicated with the high-temperature gas pipeline or the vacuum pipeline. The battery cell baking device provided by the utility model is beneficial to improving the drying and dewatering consistency of the battery cell, the cavity accelerates the drying speed of the battery cell under the synergistic effect of the high-temperature gas and the heating plate, and compared with the prior art, the battery cell baking device achieves an effective drying effect in a short time, and reduces the energy consumption in the drying process of the battery cell at the same time.