218 results about "Electrical tape" patented technology

The invention discloses an insulating tape for a new energy battery and a preparation method of the insulating tape, and relates to the technical field of new energy battery assemblies. The insulating tape for the new energy battery is prepared by coating pretreated glass fiber cloth with a coating, the coating is prepared from the following raw materials in parts by weight: 15 to 20 parts of modified polyimide resin, 2 to 4 parts of epoxy resin E-51, 71 to 77 parts of an ethanol / butanone mixed solvent, 3 to 5 parts of modified nano silicon dioxide, 0.2 to 0.4 part of a silane coupling agent KH-550, 0.1 to 0.3 part of polydimethylsiloxane, 0.1 to 0.2 part of paraffin-based mineral oil and 0.3 to 0.5 part of triethylene tetramine. The glass fiber cloth pretreatment material comprises deionized water and a 5%-8% sodium hydroxide solution. The insulating adhesive tape for the new energy battery contains the modified polyimide resin, so that the high temperature resistance and electrolyte resistance of the adhesive tape can be enhanced, the insulativity is improved, and the modified nano silicon dioxide is good in dispersity. The preparation process is fine, the glass fiber cloth is fully pretreated, the preparation process is standard, and the use requirements of new energy batteries can be met.

A photoelectric composite flexible high-voltage reel cable, including a polyethylene outer sheath (1), a double-face plastic-coated steel belt (2) connected to an inner side of the polyethylene outer sheath (1), an insulating tape (3) connected to an inner side of the double-face plastic-coated steel belt (2), an anti-crack protective sleeve (4) connected to an inner side of the insulating tape (3), and a power cord body (6), a filler rope (7), a reinforcement (9) and an optical fiber body (8) sequentially distributed on an inner side of the anti-crack protective sleeve (4) from top to bottom, where the power cord body (6), the filler rope (7) and the optical fiber body (8) are distributed on a peripheral side of the reinforcement (9). The photoelectric composite flexible high-voltage reel cable further includes a metal radiating column (11), movable balls (13), a rubber air bag (14), and a conveying pipe (15).

An electrically conductive circuit has a distal end coupled to a catalytic converter of a vehicle. A sensor such as a voltage divider is coupled to a proximal end of this conductive circuit. The voltage divider senses when a resistance associated with the conductive circuit is altered, indicative of catalytic converter tampering. An alarm signal can then be sent to the vehicle horn or otherwise beneficially outputted to warn of the tampering. The conductive circuit preferably includes a length of nichrome wire having a substantial resistance. Reliable electrical connection and tampering avoidance can be provided at the distal end of the nichrome wire by utilizing an electrically conductive washer at the distal tip, covering the nichrome wire with high temperature insulating tape, overlying the tape with a pipe clamp and encapsulating the washer, distal end of the nichrome wire, insulating tape and pipe clamp with a high temperature bonding adhesive.

The invention provides a flexible electrochemical sensor, a preparation method and application. The flexible electrochemical sensor comprises a flexible substrate, three electrodes, a conductive strip, an external wire and a multi-cavity polypyrrole film, the three electrodes comprise a working electrode, a reference electrode and an auxiliary electrode and are printed on the flexible substrate; the conductive strip is connected with the three electrodes, the conductive strip is packaged through an insulating tape, and only working areas of the three electrodes are exposed; the external wire is pasted on the conductive strip through conductive silver adhesive. The multi-cavity polypyrrole film is modified on the surface of the working electrode. The technical problems that existing equipment is insufficient in portability, cannot meet the requirements of on-site rapid screening and real-time analysis of large-batch samples, and is difficult to realize on-site mobile detection are solved. The invention provides a feasible technical means for portable, mobile and on-site rapid detection of high-harm heavy metal ions such as Hg < 2 + > and Cd < 2 + >, and the method is simple to operate and extremely low in cost.

The invention discloses an aerial insulated cable surface repairing device, and relates to the technical field of cable surface repairing, the aerial insulated cable surface repairing device comprises a frame ring, an advancing assembly for realizing a device walking function and a repairing assembly for realizing a device repairing function, the frame ring is provided with a notch, the outer contour of the frame ring is provided with a first sliding groove, and the first sliding groove is provided with a second sliding groove. A plurality of groups of first through holes which are parallel in pairs and are distributed in a surrounding manner are formed in the inner surface of the frame ring, clamping grooves are formed in the two ends of a notch in one side of the frame ring, and a second sliding groove is formed in the surface of the other side of the frame ring. By arranging the advancing assembly, the function that the device automatically advances along the surface of the cable is achieved; by arranging the repairing assembly, automatic repairing of the defect area on the surface of the cable is achieved; and by arranging the cutting mechanism, the function of automatically cutting off the insulated rubber tape is achieved.

The invention belongs to the technical field of battery processing, and discloses a roll core and a full-tab cylindrical battery. The roll core is formed by winding a positive plate, a diaphragm, a negative plate and a diaphragm which are stacked in sequence, a through hole is formed in the center of the roll core, a coating layer and a first blank foil located at the axial end part of the roll core are arranged on a positive foil of the positive plate, and at least the first blank foil is bent towards the center of the roll core and is overlapped to form a flat surface; the roll core further comprises an insulating tape, the insulating tape is attached to at least the outer side of the positive plate, the starting end of the insulating tape is flush with or close to the front of the starting end of the positive plate, the distance between the top of the first blank foil and the top of the negative plate is L, the distance between the upper boundary of the insulating tape and the top of the negative plate is L1, the inward bending width of the first blank foil is defined as W, and L / 3 < = L1 < = L-W. The blank foil of the positive electrode can be effectively prevented from being bent outwards at the starting end and making contact with the negative plate to cause short circuit, and the qualified rate of the roll core is increased.

The present invention relates to the technical field of insulator relay protection, and proposes a non-stop cable insulation wrapping device and method, comprising a detection device and a wrapping device, and an insulating operating rod connected thereto. The detection device is composed of a temperature measuring instrument, an electromagnetic radiation detector and a fixing frame, and the fixing frame is detachably connected to the insulating operating rod. The wrapping device comprises a fixing seat detachably connected to the insulating operating rod, a bracket and a motor box provided on the top of the fixing seat, a rotating mechanism and a camera mechanism. The rotating mechanism rotates 360° around the axis of the conductor, driving the insulating tape to wrap around the conductor synchronously. A motor is provided in the motor box, and the motor drives the rotating mechanism to rotate, which is controlled by a circuit board. The camera mechanism monitors the wrapping process in real time to ensure the quality of the wrapping; after the insulation wrapping is completed, the detection steps are repeated to ensure whether the wrapping is in place, further improving the reliability and effectiveness of the repair.

The invention discloses an automatic adhesive tape winding device for a busbar. The automatic adhesive tape winding device comprises a base, a fixing mechanism, a moving frame and an adhesive tape winding mechanism, wherein the fixing mechanism is arranged on the base and used for fixing the busbar; the moving frame is arranged on the base and can move in the X direction, the Y direction and the Z direction; the adhesive tape winding mechanism comprises a fixing ring and a rotating ring, openings are formed in the fixing ring and the rotating ring, an insulating adhesive tape roll, a first fixing block and a second fixing block are arranged on the side face of the rotating ring, a cutter is arranged on the side face of the rotating ring, and brushes are arranged at the lower end of the first fixing block, the lower end of the second fixing block and the upper end of the cutter. After the busbar is fixed by the fixing mechanism, the moving frame moves rightwards in the Y direction, the end of the insulating tape is completely attached to the busbar under the action of the brush, then the rotating ring rotates to enable the insulating tape to be wound around the busbar, the insulating tape is cut off through the cutter, and the turnup section of the insulating tape is flattened and attached to the busbar through the brush of the second fixing block after the insulating tape is cut off.

The application discloses a kind of water-resistant and electric breakdown-resistant PVC insulating electrician adhesive tape and preparation method thereof, and relates to the technical field of insulating electrician adhesive tape.The water-resistant and electric breakdown-resistant PVC insulating electrician adhesive tape includes PVC film layer and adhesive layer arranged on one surface thereof;The adhesive layer includes primer layer directly contacting the PVC film layer and pressure-sensitive adhesive layer arranged on the other surface of the primer layer.The PVC film layer includes the following raw material components: 50 parts of PVC resin, 10-15 parts of insulating filler, 15-20 parts of toughening agent, 2-4 parts of heat stabilizer, 0.25-0.75 parts of lubricant and 0.5-1.5 parts of antioxidant by weight fraction;The primer layer includes the following raw material components: 50 parts of acrylate monomer, 6-8 parts of unsaturated acid, 2-3 parts of photoinitiator and 0.5-1 part of antioxidant by weight fraction.

A battery (10) comprises: an electrode body (14) in which a positive electrode (11) and a negative electrode (12) are wound with a separator (13) interposed therebetween; a positive electrode lead (16) electrically connected to the electrode body (14); and an exterior can (20) that accommodates the electrode body (14) and the positive electrode lead (16). The positive electrode lead (16) has a small cross-sectional region (55) having a small cross-sectional area outside the electrode body (14). The small cross-sectional region (55) is preferably covered with tape such as insulating tape (51) or heat-insulating tape. According to the present disclosure, it is possible to provide a battery (10) in which appropriate current interruption is easily achieved when abnormal heat generation occurs.

The invention discloses a separating and collecting device for an anti-sticking layer of an insulating tape. Wherein the separating and collecting device comprises a shell, a collecting device and a driving device, and an opening is formed in the shell; the cover body is hinged to the shell, the cover body covers the opening, and the cover body and the shell form a guide-out opening; the large gear and the small gear are meshed with each other, the large gear and the small gear are located in the shell, the large gear is provided with an adhesive tape shaft, and the small gear is provided with a recycling shaft; and the guide roller is arranged in the shell, located at one end of the guide-out opening and hinged to the shell. The anti-sticking layer collecting device can achieve centralized collection of anti-sticking layers, avoid the pollution problem, reduce manual picking, is convenient to carry and use, simple in structure and capable of being repeatedly used after an insulating tape is replaced, and the utilization rate is increased.

An electrochemical device includes a housing, an electrode assembly, and an insulating tape. The electrode assembly includes a first electrode plate, a second electrode plate and a separator. The insulating tape includes a body portion and a first connecting portion. The electrode assembly includes a first surface and a second surface opposite to each other. The body portion is disposed on the first surface, and is fixedly bonded to the electrode assembly and the housing separately. The first connecting portion is formed together with the body portion in one piece. A first end of the first connecting portion is connected to the body portion, and a second end of the first connecting portion is disposed on the second surface, and is fixedly bonded to the electrode assembly and the housing separately. The first connecting portion is bonded to an edge of the separator.

The utility model relates to a liquid insulated rubber tape brush which comprises a brush handle and two brush strips, the two brush strips are arranged at the bottom of the brush handle at intervals, each brush strip is in a C shape with the two ends folded inwards, the brush strips are elastic rubber strips, and bristles are arranged outside the brush strips. The beneficial effects of the utility model are that the two brush strips infiltrated with the liquid insulating tape are inserted outside the wire joint, the inner walls of the two brush strips are clamped with the wire joint, then the brush handle is moved forward from the starting point of the wire joint, the two sides of the wire joint are coated with the liquid insulating tape, and after the brush handle moves to the terminal point of the wire joint, the brush handle is rotated by 90 degrees. The brush handle is reversely moved from the end point of the wire joint, the liquid insulated rubber tape can be completely brushed outside the wire joint through two times of brushing, time is saved, brushing is uniform, and the insulation and anti-corrosion effects are good.

The application discloses an insulating adhesive, an insulating adhesive tape and a preparation method of the insulating adhesive. The insulating adhesive comprises an insulating adhesive body and insulating particles doped in the insulating adhesive body. The breakdown field strength of the insulating particles is greater than that of the insulating adhesive body. Because the breakdown field strength of the insulating particles is greater than that of the insulating adhesive body, the insulating adhesive body is more likely to be broken down than the insulating particles. When an electrostatic discharge current acts on the insulating adhesive, the electrostatic discharge current will break down the insulating adhesive body with poor insulation performance and is more likely to be broken down, bypass the insulating particles with good insulation performance and are more difficult to be broken down, so that the breakdown path of the electrostatic discharge current is lengthened, the breakdown voltage required for breaking down the insulating adhesive is increased, and thus the insulation performance of the insulating adhesive is improved.

The utility model discloses a multifunctional clamp for battery assembly, and relates to the technical field of battery assembly, the multifunctional clamp comprises a plate body, a clamping mechanism is fixedly mounted on the top surface of the plate body, a plurality of supporting rods are movably inserted into the two sides of the clamping mechanism, a winding mechanism is fixedly mounted at the top end of each supporting rod, and the clamping mechanism comprises a shell; according to the battery assembling device, the clamping mechanism is arranged, a battery on the placing plate can be clamped and fixed through movement of the clamping plate, therefore, the situation that the battery moves in the assembling process can be reduced, and then the battery assembling efficiency is improved; the winding plate can drive the insulated rubber tape to do circular motion around the battery, so that the battery is wound, the labor intensity of workers can be reduced, the supporting rod is connected with the first connecting plate in an inserted mode, the winding mechanism can be disassembled at the needed time, and the follow-up assembling procedure is prevented from being affected.

The waterproof insulating adhesive tape comprises an adhesive tape body, a protective shell and a connecting rod, the protective shell is composed of an upper shell body and a lower shell body, the upper shell body and the lower shell body are the same in structure, the upper shell body is a semicircular hollow shell body, a semicircular through hole is formed in the center of the upper shell body, and after the upper shell body and the lower shell body are attached to each other, the upper shell body and the lower shell body are connected through the connecting rod. The two semicircular through holes can form a circular through hole, the connecting rod is inserted into the inner cylinder of the adhesive tape body and placed in the circular through hole, and the upper shell and the lower shell are detachably connected through magnetic attraction. The adhesive tape body is placed in the protective shell through the connecting rod, the protective shell can prevent external dust or other stains from adhering to the waterproof insulating layer of the adhesive tape, the waterproof insulating layer is prevented from being affected by the dust or other stains, and the side face of the adhesive tape can also be prevented from being adhered with the dust.

This utility model discloses a double-gang DC contactor. The moving contact is connected to the coil drive assembly, and the stationary contact is connected to the terminal block on the housing. Placement slots are provided at both ends of the housing near the contact assembly, and an outer magnet is fixedly placed in each slot. An inner magnet is located in the middle of the housing, and a positioning structure is provided to position the inner magnet. The magnetic field generated by the inner and outer magnets can drive the electric arc generated when the moving and stationary contacts separate to an empty space inside the housing. This utility model can guide the electric arc inside the contactor to an empty space inside, preventing the arc from damaging or interfering with other internal components. Simultaneously, the inner magnet is covered with insulating tape, insulating it from the copper sheet, thus ensuring the product's insulation performance. Furthermore, the four sides of the inner magnet are positioned and fixed, preventing displacement under vibration and affecting normal operation, thus ensuring the product's vibration resistance.

The application provides a preparation process of high-strength elastic electrical insulating adhesive tape, the insulating adhesive tape comprises a base layer and a glue layer, the glue layer comprises the following raw materials in parts by weight: rosin resin 30-60 parts, shellac resin 40-50 parts, polyurethane resin 40-60 parts, butyl rubber 63-85 parts, cis-butadiene rubber 35-40 parts, diaminodiphenyl sulfone 2-4 parts, nano ceramic powder 3-5 parts, carbon black 1-2 parts, flame retardant 2-4 parts and plasticizer 1-2 parts; the preparation method of the insulating adhesive tape is as follows: mixing rosin resin, polyurethane resin and butyl rubber to obtain a first mixture, mixing the first mixture to obtain a first mixing product, mixing shellac resin, cis-butadiene rubber and nano ceramic powder to obtain a second mixture, mixing the second mixture to obtain a second mixing product, finally mixing the first mixing product and the second mixing product to perform re-mixing, and adding diaminodiphenyl sulfone, carbon black, flame retardant and plasticizer at the same time, so that the insulating adhesive tape prepared finally has good toughness, is not easy to break and can bear a larger external force, and the safety performance of the product is improved.

This invention discloses a method for insulating and encapsulating the periphery of a laminated busbar, belonging to the field of busbar encapsulation technology. The method involves fabricating an insulating tape, wrapping and pressing it into an encapsulation groove formed between the edges of the bottom and top insulating plates on the outer periphery of the laminated busbar, and ensuring a sealed bond between the insulating tape and the groove walls. The width of the insulating tape is at least smaller than the width of the encapsulation groove, creating glue-filled gaps between the two sides of the tape and the side walls of the groove. Its advantage lies in that, compared to existing techniques using injection encapsulation which requires more than ten hours of curing within the encapsulation period, this invention can improve encapsulation efficiency by nearly a hundred times while maintaining encapsulation quality.

An insulating tape (100) is impregnated with a liquid resin containing at least one of a bisphenol A-type epoxy compound having a repeating number of zero and a bisphenol F-type epoxy compound having a repeating number of zero. A microcapsule (130) includes an outer shell body and an inclusion material having a property of promoting curing of the liquid resin. A binder layer (120) is composed of a crystalline epoxy resin having a molecular structure in which two phenyl groups are linked by a single bond, a molecular structure in which two phenyl groups are linked by an ether bond, or a molecular structure in which two phenyl groups are linked by a methylene group.

A relay coil assembly includes a coil skeleton, a coil and a first insulation tape. The coil skeleton has an upper flange, a lower flange and a cylindrical portion located between the upper flange and the lower flange. The coil is wound around the cylindrical portion of the coil skeleton. The first insulation tape is wrapped and bonded to the outer peripheral surfaces of the upper flange and the lower flange. The coil skeleton is located in a space surrounded by the first insulation tape. The coil is sealed in an annular enclosed space defined by the first insulation tape and the coil skeleton.

The application relates to the technical field of adhesive tape detection, and discloses a temperature and pressure resistant detection equipment and a detection method for manufacturing insulating adhesive tape. Through the arrangement of a cleaning assembly, after the temperature resistance detection of the insulating adhesive tape is completed, a driving assembly drives the cleaning assembly to move to a detection table quickly, the cleaning assembly pastes a scraper on the detection table, and the scraper is aligned with a heater. Then, the driving assembly drives the scraper to move to the fixed seat direction, and the melted glue on the heater and the fused insulating adhesive tape are scooped up, so that the melted glue is cleaned before solidification, the fused adhesive tape is fixed on the heater, and the cleaning work of the operator after detection is facilitated, so that the detection efficiency of the equipment is improved.

Device and method for electrically insulating an electrical wiring terminal by applying an electrically insulating adhesive tape, comprising : - a holding claw (2) movable between: a folding position; and a winding position; - a folding table comprising a first folding lever; and second folding lever; - a winding drum (19).

The utility model discloses a single battery, a battery pack and electric equipment, and belongs to the technical field of power batteries, the single battery comprises a shell, a cover plate assembly and an insulating tape, the shell is provided with an accommodating cavity; the cover plate assembly covers the accommodating cavity and is connected with the shell; the insulating tape comprises a shell insulating part wrapping the shell and a cover plate insulating part wrapping the side, away from the shell, of the cover plate assembly, the shell insulating part is connected with the cover plate insulating part, and the cover plate insulating part comprises a first insulating part and a second insulating part; the first insulation parts are arranged on the two sides, extending in the length direction, of the cover plate assembly, the second insulation parts are arranged on the two sides, extending in the width direction, of the cover plate assembly, and the first insulation parts and the second insulation parts are partially overlapped. The utility model aims to solve the technical problem that the insulation rubber tape and the top cover patch are not tightly matched and are easy to warp at present.

The invention discloses production equipment before lamination of a perovskite component and a production process thereof. The production equipment before lamination of the perovskite component comprises a conveying device, a first feeding unit, a plurality of pasting devices, a first adhesive film laying device, a second feeding unit, a second adhesive film laying device, a laminating device and a discharging device, the production process before lamination of the perovskite assembly comprises various or all steps of feeding of perovskite glass, pasting of an insulating adhesive tape, pasting of a bus bar, pasting of a conductive adhesive, pasting of a butyl adhesive tape, laying of a first layer of adhesive film, placement of a battery piece, laying of a second layer of adhesive film, lamination action and blanking of the perovskite assembly. According to the invention, high integration, automation and flexibility of production before lamination of the perovskite assembly are realized, the production efficiency and the product quality are improved, the device is suitable for production of various perovskite assemblies, the occupied area of equipment and the production cost are effectively reduced, and the device has relatively high practicability and popularization value.

This utility model belongs to the field of electronic transformer technology, specifically relating to a compact high-frequency electronic transformer with high dielectric strength. It includes a mounting frame with pins mounted near both ends on the bottom surface of the frame. A partition is provided on the upper side of the mounting frame, and a winding frame is fixedly connected to the upper and lower sidewalls of the partition. The winding frame is fixedly connected to the mounting frame and has a hollow structure. A primary coil is mounted inside the winding frame on the upper side of the partition, and a secondary coil is mounted inside the winding frame on the lower side of the partition. An upper magnetic core is mounted on the upper side of the winding frame, and a lower magnetic core is mounted inside the winding frame on the lower side of the mounting frame. A dielectric protection cover is mounted on the outer side of the winding frame between the upper and lower magnetic cores. The bottom and left sidewall of the dielectric protection cover are open. This utility model eliminates the need for insulating tape, can withstand high voltage and arc damage, and significantly reduces the transformer size.

The utility model relates to the technical field of optical cable detection, and discloses an optical cable coupling test device, an optical cable coupling clamp comprises two semicircular chucks, one of the semicircular chucks is wound with a lead, the optical cable coupling clamp clamps an optical cable located in an underground pit, and an electrical adhesive tape is wound on the outer sides of the two semicircular chucks to fix the optical cable coupling clamp and the optical cable; the viscoelastic body adhesive tape is wound on the outer side of the electrical adhesive tape and wraps the two semicircular chucks and the preset parts, located on the two sides of the semicircular chucks, of the optical cable, sealing is performed, and the safety of the optical cable in the position test is maintained; the ground optical cable pile is fixed on the ground and is provided with a wire inlet channel communicated with the ground to ensure that the bottom of the ground optical cable pile is transparent, the two ends of the connecting lead are led out of the ground and jointly penetrate through the wire inlet channel, the two ends of the connecting lead are provided with wire noses, a detector can be directly communicated with the wire noses fixed on the ground optical cable pile, and the optical cable positioning detection efficiency is improved. And the time, the labor cost and the safety risk of exploring pit excavation are reduced.

An embodiment of the present invention relates to a secondary battery. The secondary battery according to the embodiment of the present invention may comprise: an electrode assembly having a first electrode plate and a second electrode plate; a cylindrical can for accommodating the electrode assembly; a cathode terminal coupled to one end of the can; a first current collector plate disposed between the first electrode plate and the cathode terminal and electrically connected to the first electrode plate and the cathode terminal; a second current collector plate electrically connected to the second electrode plate and the can; a cap plate coupled to the other end of the can; and an insulating tape which is disposed between the one end of the can and the first current collector plate so as to cover the first current collector plate, and which has a plurality of cut portions. According to the embodiment of the present invention, insulation can be easily achieved between a cathode-side end portion and a peripheral side surface portion when the electrode assembly is inserted into the can. In addition, if an odd number of cutting lines is applied to the insulating tape, the thickness of the side surface portion can be reduced.

The invention relates to an insulated rubber tape for shielding a welding strip between photovoltaic module battery pieces. The insulated rubber tape for shielding the welding strip between the photovoltaic module battery pieces comprises a weather-resistant coating, a high-transmittance base material layer, a pressure-sensitive adhesive layer and a shielding layer which are sequentially arranged from top to bottom, the weather-resistant coating is prepared from the following raw materials: first resin, a curing agent A, an ultraviolet absorbent A, a catalyst and a solvent; the pressure-sensitive adhesive layer is prepared from the following raw materials: second resin, a curing agent B and an ultraviolet absorbent B; the weather-resistant coating, the high-transmittance base material layer and the pressure-sensitive adhesive layer form a functional composite base material layer; and the width of the shielding layer is smaller than that of the functional composite base material layer. Through the arrangement of the high-transmittance base material layer and the shielding layer, the welding strip is effectively isolated and shielded, and the consistency of the photovoltaic module is improved.

The utility model relates to the technical field of adhesive tapes, and discloses an insulating adhesive tape, which comprises an adhesive tape body and a transition layer, the transition layer is arranged between the bonding buffer layer and the reinforcing layer, and the transition layer is used for tightly connecting the bonding buffer layer and the reinforcing layer. And by arranging the bonding buffer layer, the strengthening layer, the wear-resistant layer and the transition layer, the lithium battery is protected. The transition layer is arranged to connect the layers, so that the interlayer binding force of the adhesive tape is enhanced, the layers cannot be layered and stripped under the complicated external force action of stretching, bending, twisting and the like, and the structural stability of the adhesive tape is ensured. By arranging the strengthening layer, the dielectric strength of the adhesive tape is improved, current leakage is effectively blocked, it is ensured that the lithium battery can stably operate during charging and discharging, and the electrical safety of the lithium battery is guaranteed.