5566 results about "Pole piece" patented technology

The invention discloses a battery monomer, a battery device and electric equipment, and belongs to the technical field of batteries. The battery monomer comprises a positive pole piece, a negative pole piece and a packaging bag, the positive pole piece comprises a positive current collector, a positive film layer and an insulating layer, the positive current collector comprises a positive main body part and a positive tab, the positive main body part comprises a coating area and a transition area, the transition area is located at at least one end of the coating area in the first direction, the positive film layer is arranged on at least one side surface of the coating area, and the insulating layer comprises a first part; the first part is arranged on at least one side surface of the transition area; the negative pole piece comprises a negative pole film layer, the edge of the negative pole film layer exceeds the edge, close to the positive pole lug, of the first part in the first direction, a chamfer structure is arranged at the joint of the first edge and the second edge of the negative pole piece, the negative pole film layer comprises graphite, and the volume average particle size Dv50 of the graphite is 8-20 microns; and the reliability and the cycle performance of the battery monomer can be improved.

The invention discloses a high-sensitivity detection method for the safety of a battery cell, and the method comprises the following steps: S1, collecting the data of the battery cell in real time through a tunnel magnetoresistive sensor, and outputting a preliminary detection data set; s2, generating a micro-short circuit risk identification signal based on the preliminary detection data set; s3, generating a temperature anomaly distribution map by using the preliminary detection data set; s4, generating a thermal runaway early warning signal based on the temperature anomaly distribution map; s5, performing magnetic field scanning on the pole piece to generate a magnetic distortion data atlas; s6, constructing battery cell multi-source detection data, inputting the data into the physical information neural network, and training to obtain a final battery cell aging evolution model; s7, outputting a charging and discharging strategy optimization instruction based on the final cell aging evolution model; and S8, uniformly fusing the micro short circuit risk identification signal, the thermal runaway early warning signal and the charging and discharging strategy optimization instruction to generate a comprehensive response control instruction. According to the method, magnetic resistance sensing and physical modeling are fused, and intelligent prediction and response control optimization of the risk of the battery cell are realized.

The invention provides a comb-shaped polymer binder, a pole piece and a battery, the comb-shaped polymer binder comprises an acrylate main chain, a flexible soft segment, a polar hard segment and a functional chain segment, the flexible soft segment, the polar hard segment and the functional chain segment are respectively grafted on the acrylate main chain, the flexible soft segment comprises an ether chain segment and / or an ester chain segment, the polar hard segment comprises a polar group and / or a first heteroaromatic ring group, and the functional chain segment comprises a functional group and a second heteroaromatic ring group. The functional chain segment comprises an aromatic ring group containing a pi-conjugated structure and / or a second heteroaromatic ring group containing a pi-conjugated structure. The comb-shaped binder adopts a structural design of'hard section anchoring + soft section buffering + functional side chain ', is helpful for enabling the binder to have high peel strength, stress buffering and electron conduction capabilities at the same time, is compatible with an existing wet coating-rolling process, is helpful for improving the peel strength and prolonging the cycle life of an electrode plate when being used for preparing the electrode plate, and is beneficial for improving the service life of the electrode plate. And the rate capability of the battery is improved.

The invention provides a pole piece and a manufacturing method thereof, a rolling system and a secondary battery, and the manufacturing method of the pole piece comprises the following steps: coating slurry on a current collector and drying to obtain a dried pole piece; the difference between the thickness of the dried pole piece and the preset thickness after rolling is used as the total rolling reduction; the dried pole piece is subjected to continuous multi-stage rolling, adjacent two-stage rolling is carried out, the percentage of the rolling reduction of the previous-stage rolling in the total rolling reduction is larger than or equal to the percentage of the rolling reduction of the next-stage rolling in the total rolling reduction, and the sum of the rolling reduction of all stages of rolling is equal to the total rolling reduction; in the multi-stage rolling, the rolling reduction of each stage of rolling is gradually reduced on the whole; and the multi-stage rolling is cold pressing. According to the manufacturing method of the pole piece, the multi-stage rolling mode is adopted, the rolling reduction decreasing and roller gap adjusting mode is adopted, the diameter, roughness and hardness of the roller body are combined to adapt to different rolling reduction, and finally the consistency of stress release and the pole piece is achieved.

The invention relates to the technical field of batteries, and discloses a battery cell and a battery, the battery cell comprises a negative pole piece, a diaphragm and a positive pole piece; the negative pole piece comprises a negative current collector and a negative active material coating; the positive pole piece comprises a positive current collector and a positive active material coating; the diaphragm comprises a base material, a first coating and a second coating, wherein the porosity of the first coating is A, the thickness of the first coating is a [mu] m, the porosity of the second coating is B, the thickness of the second coating is b [mu] m, the porosity of the negative electrode active material coating is C, the thickness of the negative electrode active material coating is c [mu] m, the porosity of the positive electrode active material coating is D, and the thickness of the positive electrode active material coating is d [mu] m; and by limiting that [(Dd + Bb) / (b + d)] / [(Aa + Cc) / (a + c)] is larger than or equal to 0.8 and smaller than or equal to 1.2, the porosity of the two sides of the base material of the diaphragm reaches a relatively close state, the cycle performance of a battery cell is improved, and the stability and reliability of the battery in the long-term use process are guaranteed.

The utility model provides a battery and electric equipment, and the battery comprises a pole piece which comprises a main body, and the main body is provided with a first tab and a second tab along the edge of the first main body; after the winding body is formed by winding the pole piece, the orthographic projection of the first tab on the second tab is at least partially overlapped with the second tab along the radial direction of the winding body; a first insulating layer is arranged at the root, close to the main body, of the first tab, and a second insulating layer is arranged at the root of the second tab; in the first direction, the distance between the edge of the first insulating layer and the edge of the first body is a, the distance between the edge of the second insulating layer and the edge of the first body is b, and b is larger than a. According to the battery and the electric equipment provided by the invention, the second insulating layer is arranged at the root part of the second tab, and the distance b between the edge of the second insulating layer and the edge of the first main body is relatively large, so that the root part of the second tab has relatively high bending resistance, and the second tab is more easily bent in an arc shape when being bent; therefore, the condition of inverted insertion of the tabs is avoided.

The invention discloses a positive pole piece and a secondary battery, and belongs to the technical field of batteries, a positive active material in the positive pole piece comprises first lithium iron phosphate particles and second lithium iron phosphate particles; the particle diameter of the first lithium iron phosphate particles is greater than or equal to 1 mu m, and the particle diameter of the second lithium iron phosphate particles is less than or equal to 0.9 mu m; the particle diameter Dn50 of the first lithium iron phosphate particles is 1.1-3.0 [mu] m, and the particle diameter Dn50 of the second lithium iron phosphate particles is 0.25-0.65 [mu] m; the positive pole piece meets the condition that b is greater than or equal to 2 and less than or equal to 9; b is the area ratio of heat release characteristic peaks at different positions of the positive pole piece in the DSC test. Two lithium iron phosphate particles with different sizes are introduced for compounding, and meanwhile, thermal decomposition characteristic parameters of the positive pole piece are synchronously regulated and controlled, so that the low-temperature energy retention rate of the secondary battery can be improved, the thermal stability is good, and ideal high-temperature cycling stability performance is synchronously realized.

In order to solve the problem of insufficient electrolyte infiltration in the middle position of a pole piece of a winding type long and narrow battery in the prior art, the utility model provides a diaphragm and a lithium ion battery, the diaphragm comprises a base membrane layer and a PVDF (Polyvinylidene Fluoride) coating layer, the PVDF coating layer is arranged on the surface of the base membrane layer and comprises a first area and two second areas, and the first area and the second area are arranged on the surface of the base membrane layer. The first area is arranged in the middle of the diaphragm, the two second areas extend from the edge of the first area to the end part of the diaphragm in the length direction, and the porosity of the first area is greater than that of the second areas. According to the diaphragm provided by the utility model, the second region with small porosity is relatively high in overall density, so that the rigidity and the tensile resistance of the diaphragm are improved, that is, through the combination of the first region and the second region, the overall wettability of the diaphragm can be improved, and the mechanical strength of the diaphragm can be ensured; the electrochemical performance and the service life of the lithium ion battery are improved.

The invention provides a secondary battery and an electric device, and relates to the field of batteries. The secondary battery comprises a positive pole piece, a negative pole piece and an isolating membrane, the positive pole piece comprises a positive current collector and a positive membrane layer arranged on at least one side surface of the positive current collector, and the compaction density of the positive membrane layer is 2.0-3.0 g / cm < 3 >; the negative pole piece comprises a negative current collector and a negative film layer located on at least one surface of the negative current collector, and the compaction density of the negative film layer is 1.4 g / cm < 3 >-1.85 g / cm < 3 >; the isolating membrane comprises a base membrane, the thickness of the base membrane ranges from 4 micrometers to 12 micrometers, the base membrane is provided with nanopores, and the average pore size of the nanopores ranges from 10 nm to 300 nm. The secondary battery has high energy density and improved safety performance.

The invention belongs to the technical field of conductive connection, and particularly relates to an assembling mechanism for keeping combined pole pieces clamped, in particular to a pole piece assembling mechanism, an electric pile material pre-assembling device and a working method of the electric pile material pre-assembling device. Wherein the pole piece assembling mechanism is provided with an assembling plate; a rotating arm; a first lifting assembly; a second lifting assembly; the pressing frame is provided with a square opening matched with the pressing plate. And elastic anti-clamping pieces are embedded in the side walls of the pressing plates. The elastic anti-clamping piece is arranged on the side wall of the pressing plate, so that when the pressing frame is separated from the pressing plate, the elastic anti-clamping piece can automatically and dynamically adjust the levelness of the pole piece frame falling into the pressing plate, and the problem that the pole piece frame is inclined and clamped is effectively avoided; when the pressing frame and the pressing plate are pressed in a matched mode, the elastic anti-clamping piece is pressed to retract, accurate assembly of the pole piece frame and the membrane electrode is guaranteed, pole piece damage caused by rigid contact is prevented through the elastic buffering effect, and therefore the assembly yield of the galvanic pile pole piece is remarkably increased.

The utility model relates to a belt conveying mechanism which comprises a first vacuum belt assembly, a second vacuum belt assembly, a third vacuum belt assembly, a fourth vacuum belt assembly and a brush dust removal assembly. The first vacuum belt assembly, the second vacuum belt assembly, the third vacuum belt assembly and the fourth vacuum belt assembly are sequentially connected end to end, and the brush dust removal assembly is installed at the lower end of the first vacuum belt assembly and the lower end of the third vacuum belt assembly. According to the belt conveying mechanism, the first vacuum belt assembly, the second vacuum belt assembly, the third vacuum belt assembly and the fourth vacuum belt assembly convey the pole pieces in an adsorption mode, the pole pieces are conveyed through belt transmission, dust generated by friction between the belt and the pole pieces is reduced, and the qualification rate of battery cell production is increased.

The invention relates to the technical field of lithium battery cell online nondestructive testing, and discloses a lithium battery cell lamination process online quality detection method, which is used for solving the problems of high difficulty in real-time online identification of hidden defects in a lithium battery cell lamination process and high omission ratio in a traditional method. The method comprises the following steps: firstly, synchronously acquiring an optical image of the surface of a pole piece and an X-ray perspective image of an internal structure on a lamination production line to obtain a multi-modal image sequence, carrying out time sequence registration and space alignment fusion on the two types of images, and extracting a pole piece layer, a diaphragm layer boundary and a density abnormal region; according to the method, an S-shaped deformation template and an internal foreign matter template are combined to carry out mode comparison, three-dimensional coordinate positioning, density grading and severity marking are carried out on an abnormal area, a structured abnormal catalogue is fed back to a production line control system, technological parameters are adjusted in a linkage mode, online nondestructive testing and closed-loop regulation and control of hidden defects are achieved, and the production efficiency is improved. The omission ratio is reduced; and the consistency and the safety of the lamination process are improved.

The invention provides an electrode assembly, a battery monomer, a battery and a power utilization device. The electrode assembly comprises a first pole piece and a second pole piece which are opposite in polarity. The first pole piece comprises a first pole piece main body, the first pole piece main body comprises a first current collecting main body and a first active material layer, the first current collecting main body comprises two first surfaces which are oppositely arranged along the thickness direction of the first current collecting main body and a first end surface which is connected with the two first surfaces, and the first active material layer is arranged on the first surfaces. The electrode assembly further comprises an insulating part connected to the first pole piece body, at least part of the insulating part is arranged on the outer side of the first end face in the first direction, and the first direction is perpendicular to the thickness direction. The insulating part can separate the burrs on the first end face from the second pole piece, so that the risk of conduction between the burrs and the second pole piece is reduced, the possibility of thermal runaway caused by short circuit is reduced, and the reliability of the single battery is improved.

A system includes: a segmented stator assembly; a set of windings; and a rotor. The segmented stator assembly includes a set of pole pieces arranged radially about an axis. Each pole piece defines: a rim extending about a periphery of the pole piece; a recess arranged on a first side of the pole piece; and a shoulder arranged on a second side, opposite the first side, of the pole piece. Each pair of adjacent pole pieces, in the segmented stator assembly, defines a pair of linearly-offset and angularly-offset rims that cooperate to define a tapered annular interstice in a radial array of tapered annular interstices. Each winding is arranged about a tapered annular interstice in the radial array of tapered annular interstices. The rotor: encompasses the segmented stator assembly; and includes magnetic elements configured to magnetically couple to the set of windings to rotate the rotor about the axis.

The invention discloses a novel lithium battery pole piece coating machine, which belongs to the technical field of coating machines, and comprises a coating machine body, and an unwinding device, a scratch monitoring device, a tensioning device, a sectional rolling assembly, a cutter assembly, a continuous rolling assembly, a coating assembly and a winding device which are sequentially arranged in the winding direction of a pole piece from front to back, the scratch monitoring device comprises a supporting rod fixed to the coating machine body, the length direction of the supporting rod is consistent with the width direction of the pole piece, and a plurality of linear array cameras are evenly arranged on the lower side of the supporting rod in the length direction at intervals; the sectional type rolling assembly comprises a main motor, an output shaft and a pressing roller, the output shaft comprises multiple sections of supporting shafts which are sequentially connected in the axial direction, and the two ends of each supporting shaft are connected with a first hinge joint and a second hinge joint correspondingly. According to the lithium battery pole piece coating device, protrusions and recesses on the surface of the lithium battery pole piece can be treated in time, and the uniformity of the subsequent pole piece during coating is improved.

The invention belongs to the technical field of batteries, and discloses a battery pack, which comprises a battery, a bottom plate and an adhesive layer, the battery is fixedly arranged on the bottom plate through the adhesive layer, the battery comprises a shell, an insulating part and a battery cell, the battery cell is arranged in the shell and comprises a plurality of pole pieces, the insulating part covers the outer surface of the shell, and the insulating part covers the outer surface of the shell. The surface, facing the bottom plate, of the shell is a shell bottom surface, the insulating part is provided with an opening at least partially exposed out of the shell bottom surface, and the part, exposed out of the opening, of the shell bottom surface is bonded with the adhesive layer; the minimum distance between the pole piece and the bottom face of the shell is a mm, the minimum distance between the opening of the insulating part and the bottom plate is b mm, and the range of the product of a and b is 1-18. The battery pack provided by the invention has relatively high energy density, relatively good insulation performance and relatively good heat dissipation performance.

The utility model belongs to the technical field of pole piece production, and particularly relates to a rubberizing device which comprises a base frame, the locking mechanism is movably mounted on the base frame in the first direction; the supporting mechanism is movably mounted on the locking mechanism in the second direction; the tensioning mechanism is rotatably mounted on the supporting mechanism and is used for tensioning and fixing a roll core of the adhesive tape; the traction mechanism is mounted on the supporting mechanism and is used for pulling a sticking film of the adhesive tape to move; the adhesive tape pasting device has the advantages that the adhesive tape pasting device is installed behind the pole piece unwinding device, the position of the tensioning mechanism is adjusted according to the position of a pole piece lug, then the adhesive tape is installed on the tensioning mechanism, automatic unwinding and adhesive tape pasting of the adhesive tape are achieved, labor input is effectively reduced, production efficiency is improved, and production cost is reduced. And the situation that the adhesive tape is pasted askew is avoided, and practicability is high.

The invention provides a battery monomer, a battery device, a power utilization device and an energy storage device. The battery monomer comprises a laminated battery cell, the laminated battery cell comprises a positive pole piece and a negative pole piece, the positive pole piece comprises a positive current collector and a positive film layer arranged on at least one side of the positive current collector, and the positive film layer comprises lithium-containing transition metal phosphate particles of which at least part of the surface is provided with a carbon material; in a cumulative distribution curve of a graphitization degree C value obtained by the positive electrode film layer in a surface scanning mode of a laser microscopic confocal Raman spectrometer, the median C50 of the graphitization degree is 0.95-1.20, the graphitization degree C value is IG / ID, IG represents the G peak intensity of a Raman spectrum at 1580 + / -100 cm <-1 >, ID represents the D peak intensity of the Raman spectrum at 1350 + / -100 cm <-1 >, and when the battery monomer is in a full discharge state, the battery monomer is in a non-full discharge state. And the compaction density of the positive pole piece is 2.3-2.6 g / cm < 3 >. The battery monomer provided by the invention has high capacity and good cycle performance.

The utility model discloses a laminated battery cell and preparation equipment thereof, the laminated battery cell is prepared by folding a battery cell structure, the battery cell structure comprises a first pole piece, a diaphragm and a second pole piece, the first pole piece is located on one side of the diaphragm, and the first pole piece is connected with the diaphragm through a normal-temperature normal-pressure conductive adhesive; and the second pole pieces are alternately arranged on the sides, away from the first pole pieces, of the diaphragms, and the second pole pieces are connected with the diaphragms through normal-temperature and normal-pressure conductive adhesives. The normal-temperature and normal-pressure conductive adhesive disclosed by the utility model has relatively good adhesion performance at normal temperature and normal pressure, and also has relatively good conductivity, so that the problem of poor battery performance caused by high-temperature and high-pressure thermal compounding of a pole piece and a diaphragm in the existing laminated cell processing process is solved, the condition of poor liquid absorption effect and interface of the battery is improved, and the service life of the battery is prolonged. And the battery performance is improved.

The invention provides a winding needle structure and winding equipment, the winding needle structure is used for winding a laminated diaphragm and a pole piece into an electrode assembly, the winding needle structure comprises a winding body, and the winding body is provided with a negative pressure cavity and a peripheral surface. A winding area and at least one adsorption area are distributed on the peripheral surface of the winding body in the circumferential direction of the winding body; a plurality of first adsorption holes communicated with the negative pressure cavity are formed in the rolling area, adsorption force can be generated at the first adsorption holes, the rolling position of the diaphragm can be adsorbed to the rolling area, and the rolling area is only used for adsorbing the rolling position of the diaphragm; a plurality of second adsorption holes communicated with the negative pressure cavity are formed in the adsorption area, adsorption force can be generated at the second adsorption holes, and at least one of the diaphragm and the laminated layer can be adsorbed to the adsorption area; wherein the sum of the adsorption forces of all the first adsorption holes in the rolling area is greater than the sum of the adsorption forces of all the second adsorption holes in the adsorption area. Large adsorption force can be distributed to the winding position of the diaphragm, so that the problem that the diaphragm is prone to slipping and wrinkling when the electrode assembly is manufactured is solved.

The invention discloses a method for retarding black spot wrinkles of a PMMA (Polymethyl Methacrylate) gluing diaphragm lithium battery pole piece, which comprises the following steps: S1, adjusting parameters of a winding machine, adjusting the distance between pole pieces and tabs according to different parameters, and winding a battery cell; s2, performing hot pressing on the wound roll core by using different hot pressing parameters; s3, the hot-pressed roll core is assembled, put into a shell and fully charged in a capacity grading mode; wherein the parameter of the winding machine is embossing pressure; the hot pressing parameters comprise temperature, pressure and time. Therefore, by selecting the most appropriate embossing pressure and hot pressing parameter, black spots and wrinkles on the lithium battery interface of the PMMA glued diaphragm can be relieved, so that the electrochemical performance and the safety performance of the battery are improved.

The utility model provides an all-solid-state battery capable of preventing short circuit, and belongs to the technical field of all-solid-state batteries. The all-solid-state battery comprises a solid electrolyte layer, positive plates and negative plates, the positive plates and the negative plates are alternately stacked, the solid electrolyte layer is arranged between the positive plates and the negative plates, an insulating frame layer is further arranged between the positive plates and the negative plates, and the insulating frame layer is of a hollow quadrilateral frame structure. The inner frame is smaller than the positive plate, and the outer frame is larger than the positive plate. The lithium ion battery can prevent the structural integrity of the electrolyte layer from being damaged by the shearing effect generated by the edge of the pole piece under high voltage, so that the battery is short-circuited due to contact of the positive and negative pole pieces, the yield of the lithium ion battery is obviously improved, the short-circuit rate of the battery is reduced, and the cycle performance of the battery is improved.

A single battery, a battery device and a power utilization device, belonging to the technical field of batteries, the single battery comprises a shell (11), an electrode assembly (2) and an end cover (12), at least one end of the shell (11) along a first direction is provided with an opening, and the shell (11) comprises a first side wall part (111). The electrode assembly (2) is at least partially accommodated in the shell (11), the electrode assembly (2) comprises a positive pole piece (22) and a negative pole piece (23), at least part of the positive pole piece (22) and at least part of the negative pole piece (23) are stacked along a second direction, the second direction is parallel to the thickness direction of the first side wall part (111), and the first direction intersects with the second direction. The end cover (12) is used for sealing the opening, and the first side wall part (111) and the end cover (12) are welded to form a first connecting part (51). Wherein the first side wall part (111) comprises a first area (1111) and a second area (1112) which are arranged in the first direction, the first area (1111) is located between the first connecting part (51) and the second area (1112), and the hardness of the first area (1111) is lower than that of the second area (1112). The expansion force of the electrode assembly (2) is released through the first region (1111) with lower hardness to reduce the possibility of cracking of the first connecting part (51) of the first side wall part (111).

The utility model relates to a lamination unit processing device and lamination equipment. The lamination unit processing device comprises a compounding mechanism, a diaphragm feeding mechanism, a feeding conveying mechanism and a clamping and conveying mechanism, the pole piece is conveyed from the feeding conveying mechanism to the compounding mechanism, and the edge of at least one side of the pole piece is suspended by the feeding conveying mechanism, so that the clamping piece can smoothly clamp the pole piece conveyed by the feeding conveying mechanism. And after clamping the pole piece, the clamping piece is driven by the driving assembly to feed the pole piece into the composite channel and insert the pole piece between the two groups of diaphragm material belts. By driving the clamping piece to move back and forth, the pole pieces can be sequentially fed between the two groups of diaphragm material belts in a piece inserting manner. The clamping and conveying mechanism can smoothly clamp and stably insert the pole pieces, so that the feeding precision of the pole pieces can be ensured. Therefore, the compounding precision of the diaphragm material belt and the pole piece is relatively high, and the lamination unit in the composite material belt also has relatively high precision, so that the improvement of the quality of a battery cell is facilitated.

The invention belongs to the technical field of batteries, and discloses a battery pack, which comprises a battery, a bottom plate and an adhesive layer, the battery is fixedly arranged on the bottom plate through the adhesive layer, the battery comprises a shell, an insulating part and a battery cell, the battery cell is arranged in the shell and comprises a plurality of pole pieces, the insulating part covers the outer surface of the shell, and the insulating part covers the outer surface of the shell. The surface, facing the bottom plate, of the shell is a shell bottom surface, the insulating part is provided with an opening at least partially exposed out of the shell bottom surface, and the part, exposed out of the opening, of the shell bottom surface is bonded with the adhesive layer; the minimum distance between the pole piece and the bottom face of the shell is a mm, the minimum distance between the opening of the insulating part and the bottom plate is b mm, and the range of the product of a and b is 1-18. The battery pack provided by the invention has relatively high energy density, relatively good insulation performance and relatively good heat dissipation performance.

The invention discloses a sodium-ion battery negative pole piece, a preparation method, a sodium-ion battery and an electric device, the negative pole piece has a layered structure, that is, the negative pole piece comprises a first active layer and a second active layer, and the average interlayer spacing and gram volume of active substance materials in the two active layers meet a certain relational expression. Through the layered design of the pole piece and the specific matching of the active material in the active layer, the sodium-ion battery can give consideration to high gram volume and dynamic performance, the gram volume loss is small, and the dynamic performance is high, so that the comprehensive performance optimization of the sodium-ion battery is realized.

The invention discloses a circuit breaker integrated with an adjustable hydraulic release. The circuit breaker comprises a circuit breaker body, wherein the adjustable hydraulic release, a release transmission mechanism and a main contact system are arranged in the circuit breaker body. The adjustable hydraulic release comprises a release body and an intelligent control module; the tripper body is provided with an oil cup, an oil cup iron core capable of axially moving, a pole shoe, a first coil and an armature, and the armature is linked with the tripping transmission mechanism. When the first coil is electrified, a first electromagnetic force is generated to push the oil cup iron core to move towards the pole shoe and finally attract the armature to trigger a tripping action so as to break a circuit. The intelligent control module is located at the end of the oil cup and can generate second electromagnetic force in the same direction or reverse direction as the first electromagnetic force to act on the oil cup iron core, and rated current adjustment and overload protection adjustment are achieved. According to the design, the problem that the protection characteristic of a traditional hydraulic electromagnetic release is fixed is solved, the number of synthesized ampere turns is equivalently changed through controllable second electromagnetic force, the rated current is flexibly adjusted, and the requirements of different devices are met.

The invention provides a pole piece, a battery and an electronic device, the pole piece comprises: a current collector, the current collector comprises a coated area and an uncoated area, the coated area comprises an active material layer, a first insulation part and a second insulation part which are arranged along a preset direction on at least one surface of the current collector in the thickness direction and are sequentially and adjacently arranged; in the thickness direction of the current collector, the thickness of the first insulating part is greater than that of the second insulating part, and the first insulating part comprises a first insulating layer and a second insulating layer coated on the first insulating layer; in the preset direction, the width of the uncoated area is W1mm, the width of the first insulating part is W2mm, and W1 / W2 is larger than or equal to 1.5 and smaller than or equal to 10. According to the pole piece, the battery and the electronic device provided by the invention, on the premise of reducing wrinkles and folding of the uncoated area, the uncoated area has enough width to be assembled with other structures in the battery.

The invention provides a tritium radiation volt isotope battery. The tritium radiation volt isotope battery comprises a shell and a stacking structure, the shell is provided with an accommodating cavity; the stacked structure is arranged in the containing cavity and comprises a positive pole piece, a semiconductor transduction layer and a negative pole piece which are arranged in a stacked mode, the semiconductor transduction layer is arranged to be an array formed by columnar nano particles, liquid tritides are distributed on the surfaces of the columnar nano particles, and the liquid tritides comprise all-tritiated N-ethyl carbazole and / or all-tritiated N-ethyl carbazole and / or all-tritiated N-ethyl carbazole and / or all-tritiated N-ethyl carbazole and / or all-tritiated N-ethyl carbazole and / or all-tritiated N-ethyl carbazole. And part of tritiated N-ethyl carbazole. The radiation volt isotope battery has improved energy conversion efficiency.

The invention discloses an adjustable oil damping electromagnetic release applied to a circuit breaker, and belongs to the technical field of release. Comprising an oil cup, an oil cup iron core capable of moving in the axial direction, a pole shoe arranged at the end of the oil cup and a first coil wound around the outer wall of the oil cup, and when the first coil is powered on, first electromagnetic force driving the oil cup iron core to move towards the pole shoe is generated; and the intelligent control module is arranged at the end part of the oil cup and is used for outputting controllable direct current to generate second electromagnetic force in the same direction or opposite direction as the first electromagnetic force, and the release has a rated current adjusting function and an overload protection adjusting function by adjusting the magnitude and the direction of the second electromagnetic force. The controllable second electromagnetic force is introduced into a traditional oil damping electromagnetic release, the rated current specification can be adjusted, the release action time can be adjusted, the advantage that the temperature stability of the oil damping release is good is reserved, and meanwhile the defect that the protection characteristic of the oil damping release cannot be adjusted is overcome.