46results about How to "Achieve conduction" patented technology

This invention discloses a cable chain forging device, belonging to the field of hardware forging technology. It includes a base, with an auxiliary mechanism featuring a processing table mounted on the top of the base. The processing table is fixedly mounted on the top of the base. A flow-dispersing mechanism with a ring frame is located near the top of the base and the ring frame is rotatably mounted on the top of the processing table. A long plate is connected to the surface of the ring frame near the processing table, and multiple air nozzles for blowing and dispersing air onto the cable chain are connected to the surface of the long plate near the processing table. This invention uses a heating box and an air pump to deliver heat to the ring frame and blows air onto the cable chain on the processing table through the air nozzles on the long plate, providing a stable and suitable temperature environment for the cable chain. It can also more accurately maintain the temperature of the cable chain during the forging process, avoiding changes in material properties due to temperature fluctuations, thereby effectively ensuring the quality and precision of the cable chain forging and improving the mechanical properties and stability of the finished cable chain.

The invention discloses a water-fluorine linkage air conditioning system, which comprises a first refrigerant circulation loop, a second refrigerant circulation loop, a third refrigerant circulation loop, a fourth refrigerant circulation loop, a fifth refrigerant circulation loop, a sixth refrigerant circulation loop, a fifth refrigerant circulation loop and a sixth refrigerant circulation loop, and is characterized in that the first refrigerant circulation loop is formed by connecting a compressor, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger; a second refrigerant circulation circuit that circulates a refrigerant in a refrigerant circulation circuit formed by connecting a compressor, a water-fluorine heat exchanger, a second throttle device, and an evaporator; a first water circulation circuit that circulates water in a water circulation circuit formed by passing through the first use-side end and the water-fluorine heat exchanger; a second water circulation circuit that circulates water in a water circulation circuit formed by passing through the second use-side end and the water-fluorine heat exchanger; the tail end of the second use side is arranged on the air outlet side of the indoor heat exchanger. The air conditioning system can realize dehumidification without cooling, and is high in reliability and low in energy consumption.

This utility model provides an automotive micro switch, comprising: a micro switch with a male connector mounted on its side surface, the male connector being plugged into and connected to a female connector, the female connector being connected to a terminal block via a wire; an anti-disengagement component disposed on one side of the micro switch, the anti-disengagement component being used to prevent the male connector and female connector from disengaging; and a protective component mounted on the surface of the wire, the protective component being used to protect the surface of the wire from wear. Through the action of the anti-disengagement component, the locking block achieves a limiting and anti-disengagement effect on the locking plate, ensuring stable connection between the male and female connectors, preventing disengagement of the connection between the micro switch and the wiring harness, ensuring signal transmission and circuit continuity, and enabling the normal operation of related functions. By wrapping a sealant filling layer around the surface of the wire, the protective component is tightly fitted onto the surface of the wire.

This invention relates to the field of laser cutting technology, specifically a laser processing device for the production of disconnect switches. The device includes a main body with a sliding arm slidably connected to it. A transverse drive is slidably connected to the sliding arm, and a laser cutting head is mounted on the transverse drive. A follow-up pretreatment mechanism is fixedly connected to the sliding arm. The follow-up pretreatment mechanism includes a second double-headed telescopic rod fixedly connected to both sides of the sliding arm. An upper plate and a lower plate are fixedly connected to the upper and lower sides of the second double-headed telescopic rod, respectively. This device uses multiple telescopic rods to move the adsorption box, achieving sealing of the adsorption box and opening of the suction box. Simultaneously, it uses a wedge, rack, and gear linkage to switch the clean section of the dustproof cloth strip, automatically cleaning the protective mirror through negative pressure suction and wiping with the clean cloth strip. Compared to manual cleaning of the protective mirror, this cleaning method is more convenient and efficient, improving the overall cutting efficiency of the equipment.

The application relates to a cleaning device. The cleaning device comprises a frame, a cleaning assembly, a hand lever assembly, a water injection assembly and a switch assembly. The cleaning assembly comprises a cleaning roller which is rotatably connected to the frame. The hand lever assembly is connected to one end of the frame which is away from the cleaning assembly. The water injection assembly comprises a water tank and a hose. The water tank is mounted on the hand lever assembly. One end of the hose is connected to the water tank. The hose is partially arranged in the hand lever assembly and partially arranged in the frame, so that one end of the hose which is away from the water tank can inject water into the cleaning roller. The switch assembly is at least partially mounted on the hand lever assembly to realize the conduction or blockage of the hose.

This invention provides an endoscope device and surgical system, comprising: a fiber Bragg grating unit configured with a grating, a shape sensing unit, an imaging unit, and a probe; the fiber Bragg grating unit is configured to receive a first optical signal and a second optical signal through the light-incident side; to allow the second optical signal to pass through the grating and reach the target side, and then reach the probe through the target side; and to receive return light returned by the probe through the target side, and guide the return light to the light-out side; the probe is configured to guide part or all of the second optical signal incident on the probe to the imaging object, receive the return light returned from the imaging object, and send the return light to the target side; the imaging unit is configured to perform imaging based on the return light to obtain an imaging image of the imaging object.

The embodiment of the application provides a connecting structure and an oxygen filling system, which comprise a first connecting head and a second connecting head; the first connecting head comprises a first connecting body and a first electric connecting piece, and the first connecting body is provided with a first channel; the second connecting head comprises a second connecting body and a second electric connecting piece, and the second connecting body is provided with a second channel; the first connecting head and the second connecting head have a first connecting position and a second connecting position which are sequentially matched; in the first connecting position, the first connecting body is in sealed connection with the second connecting body, and the first channel is in communication with the second channel; in the second connecting position, the first connecting body and the second connecting body remain in sealed connection, and the first electric connecting piece is in electric connection with the second electric connecting piece. The connecting structure of the embodiment of the application can not only complete the connection or disconnection of the gas circuit and the electric circuit in one operation, but also can avoid the safety hidden danger caused by the operation sequence disorder.

The utility model discloses a methanol vaporizer with inner fins. The methanol vaporizer comprises a vaporizer body, a liquid inlet pipe is arranged close to the upper end of one side of the device body, and a liquid outlet pipe is arranged close to the lower end; the heat exchanger further comprises an inner sleeve, fins and turbulent flow blocks. The fins are fixed to the outer side of the inner sleeve at intervals, and the outer side faces of the fins are fixedly connected with the inner side face of the device body. Notches are formed in the fins, and the positions of the notches in the adjacent fins are different; the end of the liquid inlet pipe extends to the position above the fin at the uppermost end, and the end of the liquid outlet pipe extends to the position below the fin at the lowermost end. The heat exchanger is good in heat exchange effect, and the influence on a heating assembly in the heat exchanger body is small.

The application discloses an automatic test tool for nanocrystal relays and relates to the technical field of relay detection.The application comprises a fixing frame, two first conveying rollers rotatably installed on the fixing frame and a first conveying belt arranged around the fixing frame; and a mounting frame mounted on the top of the fixing frame.The application is characterized in that the mounting block and the conductive part are cooperatively designed, the relay to be detected can be moved to the position below the second conveying belt through the mounting block when the first conveying belt rotates, at this time, the single set of conductive parts on the second conveying belt can be in contact with the single set of conductive blocks of the mounting block, so that the circuit conduction between the relay and the test device can be realized, the first conveying roller and the second conveying roller are synchronously driven to rotate, the movement of the relay can be realized, the relay is detected during the movement, compared with the prior art, the device structure of the application is simple, the production cost can be reduced, the maintenance is facilitated, the relay can be continuously detected through the application, and the detection efficiency of the relay can be improved.

The utility model discloses a magnetic attraction type static contact, which belongs to the technical field of static contacts, and comprises a static contact body, a contact point and an insulating shell wrapped on the static contact body, the contact point is arranged on the static contact body, the bottom of the static contact body is fixedly connected with a magnetic conductive base, a permanent magnet is fixedly arranged in the magnetic conductive base, and the magnetic attraction type static contact is arranged in the insulating shell. The outer side wall of the magnetic conductive base is fixedly connected with an electromagnetic coil, the electromagnetic coil is wound on the magnetic conductive base, and the magnetic conductive base, the permanent magnet and the electromagnetic coil are all located in the insulating shell; through cooperative use of the magnetic conductive base and the permanent magnet, circuit conduction is realized, and through the action of the electromagnetic coil, the adsorption force to the moving contact is further increased, the magnetic field force is cooperatively provided, the stability of the contact resistance is ensured, the vibration resistance and impact resistance are improved, and the circuit breaker is suitable for complex working conditions.

The utility model relates to the technical field of medium-frequency induction heating technology metal smelting, and particularly discloses a contactor auxiliary starting device for an electric induction furnace, which comprises a rectifying circuit, a switch follow current circuit, a vacuum contactor control circuit, a starting feedback voltage detection circuit and a running state indication circuit, the input end of the rectifying circuit is electrically connected to a workshop power supply grid, and the rectifying circuit is electrically connected with the switch follow current circuit; the vacuum contactor control circuit is powered by a workshop control power supply VCC1, and the vacuum contactor control circuit is electrically connected with the switch follow current circuit; and the starting feedback voltage detection circuit is electrically connected with the vacuum contactor control circuit and is in signal connection with the post-stage circuit. According to the invention, the conduction time of the fly-wheel diode can be delayed when the electric induction furnace is started, so that the resonant load can obtain enough excitation energy at the initial stage of oscillation establishment, and after oscillation is stable, the fly-wheel diode plays a role again, so that the influence on oscillation establishment caused by premature conduction of the fly-wheel diode is avoided.

The utility model discloses a photovoltaic diode in photovoltaic diode technical field convenient to series connection, including diode module, both sides of diode module top are all fixedly installed and are connected with diode module internal electronic equipment for circuit conduction, the top fixed mounting of wire terminal is installed wire column, wire terminal and wire column all with diode module internal electronic equipment connection for circuit conduction. The utility model discloses a vertical rod, pressing plate and limiting component are set up, when the staff series connection diode module, can be connected with the wire loop of outside on the wire column, then press down the pressing plate, make the pressing plate along the outer surface of vertical rod downward movement, thereby can be pressed tightly on the wire loop of outside on the wire terminal, realize the conduction of circuit, and through the cooperation of limiting component, can limit the pressing plate, thereby stably keep the down -pressing effect to the wire loop of outside, need not help other tool to connect, convenient and fast, improved the work efficiency of staff, and it is convenient for subsequent dismouting overhauling.

This application discloses a tire mold, belonging to the field of tire mold technology. The tire mold includes: a base and a tread pattern shell. The base is provided with multiple positioning elements; the tread pattern shell is provided with a positioning groove, and the tread pattern shell is installed on the positioning elements. A flow guiding gap is formed between the tread pattern shell, the positioning elements, and the base. The flow guiding gap includes a first gap. The top surface of the positioning element abuts against the bottom wall of the positioning groove, and a first gap is formed between the tread pattern shell and the mounting surface. The base is provided with a first exhaust channel, and the positioning elements are provided with a second exhaust channel. The first exhaust channel and the second exhaust channel are connected, and the flow guiding gap is connected to the second exhaust channel. The tread pattern shell includes an arc-shaped transition section, which extends from the starting position to the side where the positioning groove is located. The tangent of the arc-shaped transition section at the starting position has an angle α with a preset direction, and the value range of α is: 0°≤α≤60°. This solves the technical problems of inconvenient tread pattern replacement and easy clogging of the exhaust structure in existing tire molds.

This invention belongs to the technical field of hard disk storage devices, and particularly relates to a hard disk enclosure with a vertical heat dissipation support structure, including a metal enclosure, a cooling mechanism, a thermally conductive silicone pad, and a storage mechanism. The vertical heat dissipation support structure of the hard disk enclosure provided in this application uses a highly elastic thermally conductive silicone pad, which not only conducts heat but also provides good cushioning elasticity. The strip-shaped thermal grooves on its surface further enhance the deformation capability of the silicone pad, absorbing minor vibrations during transportation. The cushioning silicone pads fixed at the top and bottom of the storage enclosure directly abut against the surface of the hard disk, forming a longitudinal limit. Combined with the lateral fixation of the L-shaped fixing plate and fixing bolts, the hard disk is secured during transportation, improving stability and effectively preventing damage from impacts.

The utility model provides an aerosol generating device which comprises a supporting component, an atomizing component and an atomizing component, the supporting component is provided with an oil storage cavity and an atomizing channel, and the oil storage cavity is used for storing aerosol generating oil; at least part of the atomizing core is arranged in the atomizing channel, and the atomizing core is used for heating the aerosol generating oil entering the atomizing channel so as to generate aerosol; the blocking component is arranged on the supporting component; the linkage component is movably arranged on the blocking component, the linkage component is provided with a first oil inlet channel and a first air inlet channel, the first oil inlet channel is communicated with the oil storage cavity, the first air inlet channel is communicated with the outside atmosphere, and the linkage component has a conduction position and an isolation position in the moving process. According to the aerosol generating device, the problem that the atomization core is started by mistake can be solved only through cooperation of the blocking component and the linkage component, the number of parts is small, the structure is simplified, then cost can be reduced, and application and popularization of the aerosol generating device are better facilitated.

The utility model discloses a waterproof switch, which comprises a base, a supporting piece, a bridge rocker, a switch sleeve, a switch shifting piece and a waterproof rubber sleeve, the supporting piece is connected with an external power supply live wire and is conductively connected with the bridge rocker, a spring and an elastic needle are arranged in the switch sleeve, the end part of the elastic needle is exposed and is in close contact with the surface of the bridge rocker, and the switch shifting piece shifts the switch sleeve. In addition, the waterproof rubber sleeve arranged between the base and the socket is used for abutting against and supporting the switch sleeve, external liquid and small objects are prevented from entering the base, and safety accidents such as component corrosion and electric leakage are avoided. Besides, the waterproof rubber sleeve can also prevent arc sparks generated in the power supply switching process from being in contact with external air, safety accidents such as burning human bodies or igniting external inflammable gas are avoided, the switch shifting piece can be replaced, the socket is suitable for sockets of various switching modes, and the application range is wide.

The utility model discloses a sound production monomer and sound production module relates to electric sound technology field, and the sound production monomer includes casing, magnetic circuit system and vibration system, and the casing has a plurality of along the second direction distribution's containing space, and the magnetic circuit system includes a plurality of magnetic circuit units corresponding a plurality of containing spaces, and each magnetic circuit unit includes the first magnetic assembly and the second magnetic assembly of interval setting along the first direction, and the vibration system includes a plurality of vibration units, and each magnetic circuit unit corresponds to a vibration unit, and each vibration unit sets up between the first magnetic assembly and the second magnetic assembly of corresponding magnetic circuit unit, and each vibration unit includes diaphragm and voice coil, and the voice coil includes the first voice coil part and the second voice coil part, and the first voice coil part corresponds the first magnetic assembly, and the second voice coil part corresponds the second magnetic assembly, among each vibration unit, the bellows of diaphragm is provided with the conducting path, and the voice coil is connected with the conducting terminal of casing through the conducting path. The utility model discloses the sound production monomer can realize the light and thin design, and improve the call privacy.

The invention relates to the determination of a negative control voltage for application to a control terminal of a passive semiconductor switch (18) in a half-bridge circuit (20) of a traction converter (14) of a vehicle (10), to a method for determining a negative control voltage having the following steps: (a) setting (S10) an initialization value of the negative control voltage; (b) increasing (S12) the negative control voltage by an increase value; (c) performing (S14) an emission measurement for determining an emission parameter reflecting the strength of electromagnetic emission at operation of the traction converter based on the increased negative control voltage; (d) checking (S16) whether the emission parameter is below a limit value, and repeating steps (b) to (d) until the emission parameter is below the limit value. The invention also relates to a traction converter (14) having a half-bridge circuit (20).

The utility model relates to data reading technical field especially relates to a kind of vertical reading structure and jig, the structure includes support main body, circuit component and counterweight component;Support main body has set height, the bottom of support main body includes the contact end for being connected with electronic component, circuit component and counterweight component are respectively arranged on support main body;Circuit component includes connecting pin, the end of connecting pin protrudes the face where contact end is, for the contact abutment with electronic component;Counterweight component has set mass, for increasing the weight of support main body.The utility model technical scheme, support main body under the action of counterweight component, can realize the stable connection with the contact of electronic component, need not to set again such as magnetic attraction iron sheet or metal clamping piece auxiliary structure, the quantity of structural member on mainboard reduces, can optimize mainboard manufacturing process step, reduce production cost, and also can effectively release the space occupied by auxiliary structure on mainboard.

The utility model relates to a self-conduction device, in particular to a well-entering circuit self-conduction device for oil and gas well perforation, and solves the problems that an existing perforation device is in a power supply to-be-excited state before perforation operation and cannot meet certain specific process and environmental condition requirements. Comprising a joint, an upper conductive core-passing member, an elastic on-off unit and a lower conductive core-passing member. The upper conductive core-passing member and the lower conductive core-passing member have the same structure, and each of the upper conductive core-passing member and the lower conductive core-passing member comprises an insulating shell, a contact and a conductive rod. A mounting hole is formed in the position, corresponding to the gap, of the side wall of the connector in the radial direction, and the mounting hole communicates with the through hole. A mounting cavity is formed in the side, opposite to the mounting hole, of the inner wall of the connector, the mounting hole, the through hole and the mounting cavity form a mounting space, and the elastic on-off unit is arranged in the mounting space. According to the utility model, the elastic on-off unit is used for realizing an open-circuit state before reaching a target stratum and an on-state after reaching the target stratum.

This invention belongs to the field of medical device technology and discloses an implantable medical connector, an extension lead, and an implantable neurostimulation system. The implantable medical connector includes a channel module and a support core. The channel module includes a protective shell and multiple conductive elements and multiple seals disposed within the protective shell. The conductive elements and seals are arranged coaxially and alternately along a first direction. The interiors of the conductive elements and seals together form a insertion channel for inserting electrode leads, which extends along the first direction. At least a portion of the support core is fixedly disposed within the insertion channel. The electrode lead includes a connecting end that inserts into the insertion channel and a receiving channel extending inward from the connecting end. When the electrode lead is inserted into the insertion channel, the support core is received within the receiving channel. This invention can improve the radial load resistance of the electrode lead and enhance product reliability.

The application discloses a solar cell and a manufacturing method thereof. The solar cell comprises a plurality of cell pieces, each of which comprises a silicon wafer, a plurality of first fine grids, a plurality of second fine grids and a plurality of conductive wires. The front surface and the back surface of the silicon wafer are printed with the first fine grids and the second fine grids. On any surface of the silicon wafer, the plurality of first fine grids are arranged on the silicon wafer in a dot-like manner at intervals. The silicon wafer is provided with the second fine grids at two oppositely arranged edges. The plurality of conductive wires are arranged at intervals. Any one of the conductive wires is connected with any plurality of the first fine grids, and the two ends of any one of the conductive wires are connected with the second fine grids at the two ends of the silicon wafer. Any two of the cell pieces are stacked, and the second fine grid on the front surface of one of the silicon wafers at least partially overlaps with the second fine grid on the back surface of the other silicon wafer. The solar cell can not only reduce the manufacturing cost, but also improve the current transmission efficiency of the cell pieces.

This utility model relates to a low-power tethered airship lighting system in the field of airship lighting. It includes an airship gasbag with a light strip circumferentially embedded in the middle side of the gasbag, and a light guide layer on the outside of the light strip; a light sensor mounted on the top of the airship gasbag via a frame; an equipment compartment located at the bottom of the airship gasbag, with a control mainboard installed inside; a tethering cable located at the bottom of the equipment compartment, with a power adapter connected to its bottom input end; and a bottom shell located at the bottom of the equipment compartment outside the tethering cable. A groove is formed on one side of the lower end of the bottom shell, the inner spacing of which is larger than the outer diameter of the tethering cable. A clamp is installed on the outside of the tethering cable inside the bottom shell, the outer diameter of which is larger than the inner spacing of the groove. This utility model simplifies the structure and reduces power consumption through integrated light guiding, on-demand lighting, and stable connection design, solving the problems of traditional light guiding and high power consumption.

The present disclosure provides a repair circuit of an electrical connection structure and a control method thereof. The repair circuit of the electrical connection structure comprises an electrical connection module, M first data terminals, M second data terminals, a first control circuit module and a second control circuit module. Each first data terminal is connected to a first end of at least two electrical connection structures in one-to-one correspondence through at least two first switch units, and at least one electrical connection structure connects at least two first data terminals. Each second data terminal is connected to a second end of at least two electrical connection structures in one-to-one correspondence through at least two second switch units, and at least one electrical connection structure connects at least two second data terminals. Thus, at least two electrical connection structures are provided between each first data terminal and the corresponding second data terminal to enable data transmission, mutual backup between the electrical connection structures is achieved, and the reliability of data transmission is ensured.

The utility model relates to an RFID blood management system, and belongs to the technical field of medical instruments, and the system comprises a blood sample box which is used for placing a blood sample; the sample refrigerated cabinet is provided with a plurality of placing bins which are arranged in rows and are used for placing sample boxes; the radio frequency scanning mechanism is arranged in the sample refrigerated cabinet and is used for carrying out radio frequency scanning on the blood sample in each placement bin and acquiring blood sample information; the control host is electrically connected with the sample refrigerated cabinet and the radio frequency scanning mechanism and is used for controlling the moving work of the radio frequency scanning mechanism; the radio frequency scanning mechanism comprises a moving track and a radio frequency scanning reader-writer movably arranged on the moving track, and the moving track and the sample refrigerated cabinet are arranged in parallel. According to the blood management system, the blood samples can be conveniently stored and taken in the blood bank, and the batch management efficiency of the blood samples is improved.

The application relates to a high-temperature gas cooled reactor cooling system and a control method thereof. The cooling system comprises a water-cooled wall surrounding the outer periphery of a reactor pressure vessel; a plurality of high-temperature heat pipes, one end of each high-temperature heat pipe extending into the reactor pressure vessel; and a cooling device with a coolant, the cooling device being in communication with the water-cooled wall to enable circulation of the coolant in the water-cooled wall, and the cooling device also being in communication with the other end of the high-temperature heat pipe to enable cooling of the high-temperature heat pipe. When a loss of pressure and cooling accident or a superheat accident occurs in the unit, the water-cooled wall and the high-temperature heat pipe are combined to realize a bidirectional waste heat leading-out mode of the 'inside-outside', rapidly reduce the core temperature, avoid excessively high temperature rise after the core transient state, and ensure the safety of the core.

The invention discloses a series resonant converter, a control method, equipment and a medium. The converter comprises a power supply, a switching circuit, a first channel resonance circuit, a second channel resonance circuit and a rectification circuit. The first transformer and the second transformer are connected with the first input capacitor and the second input capacitor; the other end of the primary side of the first transformer and the other end of the primary side of the second transformer are connected with a first switching tube and a second switching tube; the secondary side of the first transformer and the secondary side of the second transformer are respectively connected with the rectification circuit so as to control the output of the rectification circuit. According to the invention, the current of the dual-channel resonance circuit can be superposed to form an inductive total current by controlling the on and off of the switching circuit and combining the adjustment of the switching frequency, the switching circuit is driven to realize soft switching, and finally the working state control and wide-range voltage output of the secondary side of the transformer are realized.

This invention discloses a push-button switch with an OLED display screen, comprising a housing. Inside the housing are a self-resetting push-button switch and a switch position detection circuit board. The button end of the self-resetting push-button switch is connected to the inner wall of the housing via a snap-fit ​​structure, and the pins of the self-resetting push-button switch are connected to the switch position detection circuit board. An OLED display screen is disposed on the outer side of the housing and connected to the output end of the switch position detection circuit board. This invention can transmit the corresponding image to the OLED display screen in real time according to the pressed state of the push-button switch, thereby enabling the push-button switch itself to intuitively and conveniently display its own working status.

The utility model provides a miniature positive and negative pressure valve which comprises an air distribution valve body, and a first connector, a second connector and a third connector are arranged on the side portion of the air distribution valve body. The upper portion of the air distribution valve body is divided into a positive pressure control area and a negative pressure control area, the positive pressure control area is provided with a first air channel connected with the first connector and a second air channel connected with the second connector, and the negative pressure control area is provided with a third air channel connected with the third connector and a fourth air channel connected with the first connector. The positive pressure control area and the negative pressure control area are each provided with a control valve used for controlling connection and disconnection of the first air channel and the second air channel and connection and disconnection of the third air channel and the fourth air channel, and the two control valves are arranged side by side in an array mode. The control valve comprises an electromagnetic driving mechanism and a stop valve body, the stop valve body is fixed on the air distribution valve body through a screw, and the electromagnetic driving mechanism is fixedly butted with the stop valve body through a C-shaped buckle. The utility model has the advantages of small and compact volume, convenience in maintenance and capability of realizing positive and negative pressure control.

The utility model provides a tab and a battery cell, the tab comprises a first tab section, a second tab section and a circuit breaking device, the circuit breaking device is connected in series between the first tab section and the second tab section, the circuit breaking device comprises a first elastic sheet, a second elastic sheet and a temperature change structure, the first elastic sheet is connected with the first tab section, and the second elastic sheet is connected with the second tab section; wherein the temperature change structure is configured to respond to temperature change to change the shape, and when the temperature is not lower than a threshold value, the temperature change structure deforms to drive the second elastic piece to be separated from the first elastic piece; when the temperature is lower than the threshold value, the temperature change structure generates reset deformation, so that the second elastic piece rebounds to abut against the first elastic piece. The battery cell provided by the utility model comprises the tab. According to the tab and the battery cell, the safety performance of the battery cell can be ensured, the battery cell can be reused, and resource waste can be reduced.