87results about How to "Reduce connection difficulty" patented technology

The invention discloses a dexterous hand finger based on connecting rod transmission, a bionic mechanical arm and a humanoid robot, belongs to the field of bionic mechanical arms, solves the problem that a transmission mechanism of an existing dexterous hand is low in response speed, and adopts the technical scheme that the dexterous hand finger mainly comprises a finger base and a finger body, a driver and a transmission mechanism in transmission connection with the driver are arranged on the finger base, the driver drives the finger body to bend and / or swing through the transmission mechanism, the transmission mechanism comprises a guide piece and a sliding block installed on the guide piece in a sliding mode, and the sliding block is in transmission connection with the finger body. A traction rope connected with the sliding block is wound on an output shaft of the driver, the driver controls the output shaft to rotate forwards and backwards so as to drag the sliding block to slide back and forth along the guiding piece through the traction rope, and then the finger body is controlled to bend and / or swing. The finger is mainly used for driving the sliding block to move through the pulling rope so as to control the finger body to bend and swing, and the response efficiency of the finger body can be improved.

The invention relates to the technical field of infrared detectors, and discloses a packaging structure of an infrared detector, which comprises an optical window, a bracket, an infrared detection chip and a substrate, the substrate is of a flat plate structure; the support is of a frame-shaped structure. The infrared detection chip is connected to the upper surface of the substrate; and the optical window and the bracket as well as the bracket and the substrate are welded through welding flux to form a packaging structure. According to the packaging structure, the requirements of miniaturization, light weight, diversification and low cost of the infrared detector module can be met. Meanwhile, the invention further provides a packaging method of the infrared detector.

The invention discloses a plug and socket connector for an automobile wire harness and a connection method, and belongs to the technical field of connectors. A plug and socket connector for an automobile wire harness comprises a first joint and a second joint, one end of the second joint is inserted into the first joint, the plug and socket connector further comprises a fixing sleeve, and the first joint and the second joint are arranged in the fixing sleeve; the connecting piece is arranged on the side wall of the first joint; the overturning driving part is arranged on the fixing sleeve, and when the overturning driving part is coupled with the connecting piece, the first connector is fixed to the fixing sleeve; when the turnover driving part is separated from the connecting piece, the first joint is separated from the fixing sleeve; according to the invention, a user can quickly fix or separate the first joint and the fixing sleeve through the coupling and separation of the overturning driving part and the connecting piece, so that two groups of wire harnesses can be conveniently connected or disconnected, the connection and separation difficulty of the wire harnesses is reduced, and the replacement and maintenance efficiency is improved.

The utility model discloses a microchannel heat exchanger and heating and ventilation equipment with the microchannel heat exchanger, the microchannel heat exchanger comprises a first microchannel flat tube, a second microchannel flat tube, a connecting assembly, a first fin group and a second fin group, in a first direction, the first microchannel flat tube and the second microchannel flat tube are arranged at an interval; the connecting assembly is connected with the first micro-channel flat pipe and the second micro-channel flat pipe, the first fin set and the second fin set are arranged in the first direction, each fin set comprises a plurality of fins arranged at intervals in the second direction, the first fin set is installed on the first micro-channel flat pipe, the second fin set is installed on the second micro-channel flat pipe, and the first fin set and the second fin set are arranged in the first direction. The first direction is perpendicular to the second direction. According to the micro-channel heat exchanger, the heat exchange performance of the micro-channel heat exchanger is improved, meanwhile, the assembling difficulty of the micro-channel heat exchanger can be reduced, and the assembling efficiency is improved.

The utility model relates to an efficient connecting structure for building assembly construction reinforcing steel bars, and effectively solves the problems of high difficulty and low efficiency of end connection of assembly type building reinforcing steel bars. According to the technical scheme, the device comprises two first connecting pipes and a second connecting pipe, external threads are arranged on the outer walls of the first connecting pipes, the screwing directions of the external threads on the two first connecting pipes are opposite, a first internal thread matched with the external threads is arranged at each end of the inner wall of the second connecting pipe, and the screwing directions of the two first internal threads are opposite; an axial avoiding groove is formed in the side wall of the first connecting pipe, one end of the avoiding groove is an open end, the other end of the avoiding groove is a closed end, and the open end is communicated to one end face of the first connecting pipe; the steel bar connecting device greatly improves the steel bar connecting speed, obviously reduces the connecting difficulty, is simple and practical, and has higher axial limiting strength.

The utility model discloses a settlement measuring head device of a water pipe type settlement meter, which comprises a cylinder, the bottom end of the cylinder is provided with a conical base, the side end of the cylinder is sequentially connected with a breather pipe interface, a water filling pipe interface and a drain pipe interface from top to bottom in the vertical direction, and the water filling pipe interface is connected with a measuring cup arranged at the inner end of the cylinder. The inner side of the base is a conical surface, so that no matter whether the settlement measuring head inclines along with the settlement of the dam body or not, water overflowing from the measuring cup can be ensured to be smoothly discharged from the drainage pipe all the time, and the observation work is ensured to be smoothly carried out. Meanwhile, due to the arrangement mode of the pipelines, the cross section size of the whole device can be reduced, the height in the vertical direction is reduced, a protection support does not need to be independently arranged, the follow-up pipeline connection operation space is enlarged, and the connection difficulty is reduced. The device also has a temperature measurement function, can carry out air pressure correction on observation data under temperature influence, and eliminates the influence of air pressure difference caused by internal and external temperature difference on observation results.

The utility model relates to the technical field of disassembly and assembly of adjusting valves, and discloses an auxiliary tool for disassembly and assembly of an adjusting valve, the auxiliary tool comprises a disassembly and assembly plate and a lifting assembly, the lifting assembly comprises two clamping rods for clamping and fixing a pneumatic execution mechanism and a driving part arranged on the disassembly and assembly plate, and the driving part is used for driving the clamping rods to move in the vertical direction. When the auxiliary tool is used for disassembling and assembling the pneumatic actuating mechanism, the number of disassembling and assembling personnel needed for disassembling and assembling the pneumatic control valve is reduced, so that the disassembling and assembling cost of the pneumatic control valve is reduced, and the disassembling and assembling efficiency of the pneumatic control valve is improved. And meanwhile, the disassembly and assembly efficiency of the pneumatic control valve is improved.

The application relates to the technical field of batteries, and provides a battery terminal structure, a cover plate structure, a battery, a battery pack and an electric equipment. The battery terminal structure comprises a terminal platform, the terminal platform is used for being connected with a tab of a battery; a cover, the cover comprises a cover body part and a terminal part, the cover body part comprises a body part and a connecting part, the body part is formed with an accommodating space with an opening on one side, at least part of the terminal part is located in the accommodating space, and the connecting part is used for fixedly connecting with the terminal platform; and the connecting part is arranged on a circumferential edge of the terminal part. According to the embodiment of the application, the processing difficulty of the battery can be simplified, and the process cost is reduced.

The invention provides a truss, a floor slab and a building component. The truss comprises an upper chord structure which comprises an upper chord body and a filling part, the upper chord body comprises a cavity with an upward opening, and the upper chord body is filled with the filling part; the web is in a wave shape and is provided with a plurality of upper reflexed parts which are sequentially distributed in the length direction of the upper chord body, the length direction of the upper reflexed parts is perpendicular to the length direction of the upper chord body, and the upper reflexed parts are fixedly connected with the lower portion of the upper chord body. The cost of the truss and the connecting difficulty of the upper chord body and the upper reflexed part of the web are reduced.

The invention discloses an assembly type glass curtain wall unit plate installation structure and a construction method, the assembly type glass curtain wall unit plate installation structure is arranged on a main body structure and comprises a plurality of curtain wall unit plates, curtain wall adapters are arranged on the outer vertical face of the main body structure, and the curtain wall unit plates are fixed to the outer vertical face of the main body structure through the curtain wall adapters; aluminum alloy stand column assemblies are arranged on the curtain wall unit plates, every two curtain wall unit plates which are adjacent left and right are connected through the corresponding aluminum alloy stand column assembly, the aluminum alloy stand column assemblies are connected with the curtain wall adapting pieces, aluminum alloy cross beam assemblies are arranged on the curtain wall unit plates, every two curtain wall unit plates which are adjacent up and down are connected through the corresponding aluminum alloy cross beam assemblies, and the aluminum alloy cross beam assemblies are connected with the curtain wall adapting pieces. The aluminum alloy cross beam assemblies are fixed between the two aluminum alloy stand column assemblies which are adjacent left and right, and the multiple curtain wall unit plate bodies jointly form the glass curtain wall. The connecting difficulty of the two adjacent curtain wall unit plates is reduced, the efficiency of installation and construction is improved, the sealing performance is guaranteed, and the installation quality of the curtain wall unit plates is improved.

The invention belongs to the technical field of power line rack processing, and particularly discloses a device for power line rack processing, which comprises a shell structure, the interior of the shell structure is detachably connected with a transportation structure, the transportation structure is detachably connected with a clamping structure, and a line rack body is clamped on the clamping structure. The clamping structure comprises a T-shaped block detachably connected to the conveying structure, one side of the T-shaped block is movably connected with a first supporting strip, the other side of the T-shaped block is movably connected with a second supporting strip, the two ends of the second supporting strip are movably connected with first adjusting blocks, and the two ends of the first supporting strip are movably connected with second adjusting blocks. When the device is actually used, waste materials generated during grinding of the power cable supporting frame bottom plate can be discharged in a centralized mode, workers can conveniently treat the waste materials in a centralized mode, waste dust generated during grinding of the power cable supporting frame bottom plate can be collected in a centralized mode, and the situation that the waste dust is distributed nearby the device in a centralized mode can be avoided.

The utility model relates to a hinge connection structure of flange-extending rectangular pipes and rectangular pipes. The hinge connection structure for the flange-extended rectangular pipe and the rectangular pipe comprises a connecting seat, two extension plates, a large-diameter stud and two mounting nuts, the connecting seat is arranged at the belly part of the rectangular pipe with the outwards-extending flanges and comprises two vertical plates which are symmetrically arranged; the vertical plate is axially arranged perpendicular to the flange extending rectangular pipe and is provided with a through hole A; the extension plates are symmetrically arranged at the ends of the rectangular pipe and provided with second through holes matched with the first through holes. The stud penetrates through the through hole A and the through hole B; and the end part of the stud is in threaded fit with the mounting nut. According to the utility model, only one large-diameter stud is used for enabling the rectangular pipes with the overhanging flanges to be in a hinged connection relationship, so that the connection difficulty of the rectangular pipes with the overhanging flanges can be reduced, the on-site repair is avoided, the construction period is guaranteed, and the construction cost is reduced.

The present invention relates to the field of video technology, and provides a video playback method, device, server, system and storage medium. The server is connected to the CDN end and the client end through communication respectively, and the CDN end is connected to the client end through communication. The server obtains the fragment address corresponding to the video segment in the historical video data according to the played video data in the live video stream stored by the CDN end, that is, the historical video data, according to the preset period, and stores it in the address list; after receiving the playback request sent by the client, the target fragment address is selected from the address list according to the playback request; then, according to the target fragment address, the playback address of the target video segment corresponding to the target fragment address is obtained; and then the playback address is sent to the client, so that the client obtains the target video segment from the CDN end according to the playback address and plays it. By obtaining the address of the video segment from the CDN end to unify the interface, real-time playback of the live video is achieved, and the user experience is optimized.

The invention provides an intelligent low-side power switch circuit applied to a vehicle, the intelligent low-side power switch circuit is provided with a power supply interface, a ground interface, a switch interface and an output interface, and the intelligent low-side power switch circuit comprises a control module which is connected with the switch interface and the power supply interface; the field effect transistor is provided with a grid electrode, a drain electrode and a source electrode, the grid electrode is connected with the power interface and the switch interface through the control module, the drain electrode is connected with the output interface, and the source electrode is connected with the ground interface; wherein the control module controls the switch-on and switch-off of the field effect transistor according to a logic level signal of the switch interface so as to control the connection state of the output interface and the ground interface, and the protection and detection functions are realized through the control module. The technical problems that an existing large-current low-side control scheme generally adopts a mode of a special low-side driving chip and a metal oxide semiconductor field effect transistor (MOSFET), the scheme is extremely complex, the cost is high, and large-scale popularization and application are difficult are solved.

This invention discloses a construction method for mechanically drilling rectangular anti-slide piles, which can reduce the installation difficulty of rectangular anti-slide piles and precast retaining plates, and improve installation efficiency, installation quality and installation safety. The construction method includes: construction preparation; surveying and setting out; lock construction; mechanical drilling, marking area one and area two in the middle of the lock opening, marking area three on the left and right sides of the first side of the opening, marking area four between area one, area two and the third side of the opening, marking area four between area one, area two and the fourth side of the opening, installing a circular drill bit on a rotary drilling rig, drilling circular holes in area one and area two until the designed bottom of the hole, replacing the circular drill bit with a rectangular drill bit of the same size as area three, drilling in area three to the designed depth, and using the rectangular drill bit to finish the hole in area four to the designed bottom of the hole; reinforcement cage construction; installing pre-embedded reinforcing bars and end cap templates on the corresponding segment of the reinforcement cage; tremie pipe installation and concrete pouring, etc.

A portable three-way water collector comprises a three-way water collector body, a first water inlet, a second water inlet and a water outlet are formed in the body, the first water inlet and the second water inlet are communicated side by side, and the adjacent sides are not separated by a pipe wall; pipeline bellmouths are arranged at the upper ends of the first water inlet and the second water inlet; a pipeline socket is arranged at the lower end of the water outlet; the central axes of the first water inlet and the water outlet coincide with each other; the bottom of the second water inlet is of an arc-shaped structure. The utility model has the advantages that the straight-through type downpipe only needs to be inserted, and the downpipes with different angles can be converged only by matching the elbow at the bottom of the downpipe and then inserting, so that the connecting process is simplified, the connecting difficulty and the manufacturing cost are reduced, the occupied space is small, and the carrying is easy.

This invention discloses a rapidly connectable seismic-resistant prefabricated shear wall structure and method, relating to the field of prefabricated component connection structures. The structure includes a first shear wall and a second shear wall spaced apart, forming a vertical joint between the two walls, and pre-embedded reinforcing bars are provided. By using first and second connectors welded to the pre-embedded reinforcing bars, and by having the vertical reinforcing bars pass through these connectors, the construction process is simplified, eliminating the need for extensive steel bar binding or the use of custom components, thus reducing connection difficulty and cost. Furthermore, the adjustable first and second connectors allow for a certain range of positional deviation, ensuring the accuracy and flexibility of the connection, thereby improving the overall integrity and seismic performance of the structure.

The application discloses a mounting frame assembly of a window air conditioner and the window air conditioner. The mounting frame assembly of the window air conditioner comprises a mounting frame body, wherein the mounting frame body comprises a mounting main body and a sliding rod; the mounting main body is used for mounting the window air conditioner; and the sliding rod is arranged on the mounting main body and is movable relative to the mounting main body in a first direction of the mounting main body. The mounting frame assembly further comprises a mounting driving mechanism, which is movably arranged on the mounting main body and is adapted to drive the sliding rod to move relative to the mounting main body in the first direction when the mounting driving mechanism moves relative to the mounting main body. Thus, by using the mounting driving mechanism to drive the sliding rod to move relative to the mounting main body and by enabling the sliding rod to stop moving after being mounted in place at the bottom end and the top end of the mounting frame body, the connection difficulty between the mounting frame assembly and the window frame can be reduced compared with the prior art, the use convenience of the mounting frame assembly can be improved, and the mounting efficiency of the window air conditioner can be improved.

This application relates to the field of water treatment equipment technology, and provides a water purification device. The water purification device includes a housing, and a water filter assembly, a water circuit board, and a temperature control assembly arranged sequentially from top to bottom within the housing. The water filter assembly is connected to the water circuit board. The temperature control assembly includes a water storage tank and a temperature control component located beside the water storage tank for heating or cooling the water in the tank. The water circuit board has at least one support member on its side facing the temperature control assembly, and at least one of the support members abuts against the temperature control component; alternatively, the water circuit board abuts against the temperature control component. Based on the above solution, part or all of the weight of the water filter assembly and the water circuit board is distributed to the temperature control component, reducing the pressure on the water storage tank from the water filter assembly and the water circuit board, preventing deformation, damage, or failure of the water storage tank due to excessive pressure, and effectively extending the service life of the water storage tank.

This utility model discloses an automatic testing system for flight controllers, relating to the field of unmanned aerial vehicle (UAV) technology. It includes a control unit, a sensor unit, a storage unit, a detection unit, a power supply unit, a display unit, an input unit, and an interface unit. The control power supply includes a master MCU and a slave MCU. The control unit is connected to the sensor unit, storage unit, detection unit, power supply unit, display unit, input unit, and interface unit. The sensor unit includes a compass, a barometer, and an IMU, and is connected to the detection unit. The storage unit contains a TF card. This utility model eliminates the need for additional instruments, reducing the cost of purchasing equipment. Furthermore, only the automatic testing system needs to be learned, reducing the learning difficulty and manual training costs for workers. Simultaneously, the flight controller is connected to the system via a single cable, reducing connection difficulty and shortening testing time from approximately 2 hours to about 10 minutes.

The invention provides a full-ring combustion chamber test piece inner and outer ring connecting device and connecting method, the connecting device comprises a plurality of connecting units, and the plurality of connecting units are uniformly arranged at intervals around the outer circumference of an inner cylinder or a front adapter section casing; each connecting unit comprises a supporting plate and at least two threaded connecting pieces, one end of the supporting plate is detachably connected with the front switching section casing through the threaded connecting pieces, and at least part of the other end of the supporting plate is inserted into a limiting hole formed in the inner barrel. According to the inner and outer ring connecting device for the full-ring combustion chamber test piece, the support plate is detachably connected with the inner cylinder and the front switching section casing, so that the connecting difficulty is reduced, the connecting reliability is improved, the disassembly inspection after the test is facilitated, and the carrying and the assembly of the connecting unit, the inner cylinder and the front switching section casing are facilitated due to the detachable connecting mode.

The utility model provides a connecting device used for connecting reaction equipment and an external pipeline. A plurality of flange pieces of a flange assembly in the connecting device are arranged in a split mode and define a clamping space used for clamping an equipment pipeline. The center through hole of the flange ring is used for sleeving the flange ring on an equipment pipeline, the matching part is used for being matched with the clamping part of the flange ring, and the flange ring is connected with an external pipeline. According to the connecting device, the flange ring and the flange assembly are connected with the external pipeline after being clamped, when the equipment pipeline is connected with the external pipeline, the flange ring serves as a structure for directly applying fastening force and does not make direct contact with the pipe wall of the equipment pipeline, and the flange assembly can buffer and disperse stress of the equipment pipeline; therefore, the breaking risk of the equipment pipeline can be reduced. Besides, the flange ring and the flange assembly are designed in a split mode, installation and operation are easy and convenient, and the connecting difficulty of an equipment pipeline and an external pipeline can be lowered.

The utility model discloses a flat wire inductor outgoing line fixing structure which comprises a plug board and a boss, a flat wire inductor comprises a magnetic core and a flat wire inductor coil wound on the magnetic core, the flat wire inductor coil comprises an outgoing line end, the magnetic core is inserted on the plug board, the plug board is provided with an outgoing line hole for the outgoing line end to penetrate out, and the plug board comprises a clamping part; a clamping hole is formed in the boss, the clamping part is clamped and matched with the clamping hole, and a mounting hole is formed in the boss; the wire outlet end is connected with the electrical system through a connecting piece, a through hole is formed in the wire outlet end, the through hole corresponds to the mounting hole in position, and the connecting piece is matched with the through hole and the mounting hole. The flat wire inductor outgoing line fixing structure is simple in structure, the outgoing line end of the flat wire inductor coil is fixed through the inserting plate and the boss, the flat wire inductor coil can be connected with an electrical system through the connecting piece, and compared with a welding connection mode in the prior art, the flat wire inductor outgoing line fixing structure can reduce connection difficulty, is convenient to operate and can reduce cost.

The utility model discloses a battery pack and electric device with the same, the battery pack comprises a shell and a battery module, an accommodating cavity is formed in the shell, a pole is arranged on the shell, the battery module is arranged in the accommodating cavity and is electrically connected with the pole through a connecting assembly, the connecting assembly comprises a first plug connector, a second plug connector and a conductive elastic piece, one end of the first plug connector is plugged and matched in the second plug connector and is electrically connected with the second plug connector, the first plug connector and the second plug connector are electrically connected with the pole and the battery module respectively, and a first conductive elastic part of the conductive elastic parts is connected between the periphery of the first plug connector and the second plug connector; the second conductive elastic piece is connected between one end of the first plug connector and the second plug connector, and at least part of the conductive elastic piece protrudes towards the first plug connector or the second plug connector. According to the battery pack provided by the embodiment of the utility model, the connection difficulty of the battery module and the pole can be reduced, and the connection quality of the battery module and the pole can be ensured to a certain extent.

The invention relates to the field of photovoltaic technology, in particular to a photovoltaic energy storage device which is installed on a telegraph pole and used for supplying energy to light energy of a street lamp, the photovoltaic energy storage device comprises a supporting mechanism, an energy storage mechanism and a photovoltaic mechanism, the supporting mechanism is installed on the telegraph pole, the energy storage mechanism is connected with the supporting mechanism after being connected with the supporting mechanism in a clamped mode, and the photovoltaic mechanism is installed on the telegraph pole. And the photovoltaic mechanism is connected with the energy storage mechanism after being clamped with the energy storage mechanism. According to the photovoltaic energy storage device, the photovoltaic energy storage device is split into the supporting mechanism, the energy storage mechanism and the photovoltaic mechanism and is assembled step by step, so that the weight of the photovoltaic energy storage device is dispersed, the difficulty of transporting the photovoltaic energy storage device is reduced, the dependence of the photovoltaic energy storage device on a crane during installation is reduced, and the installation efficiency of the photovoltaic energy storage device is improved. The purposes of reducing the installation conditions of the photovoltaic energy storage device and reducing the construction difficulty of the photovoltaic energy storage device during installation are achieved.

The application discloses a cold water pipe for ocean temperature difference energy power generation, a lowering anti-swing device and a method, and relates to the technical field of ocean temperature difference energy power generation. The cold water pipe comprises an inner layer sleeve and an outer layer sleeve coaxially arranged, and has an accommodating cavity between the inner layer sleeve and the outer layer sleeve. The two ends of the accommodating cavity are blocked, and the accommodating cavity is filled with thermal insulation material. The top end and the bottom end of the cold water pipe are respectively connected with an upper joint and a lower joint. The top end of the upper joint is provided with an upper annular protrusion, and the bottom end of the lower joint is provided with a lower annular protrusion. The upper annular protrusion and the lower annular protrusion are connected by a clamp. The two ends of the cold water pipe are connected by the clamp, which not only has a simple connection mode, but also has higher connection strength and can improve the connection efficiency. The lowering anti-swing device can obviously reduce the shaking amplitude of the cold water pipe to be connected, and make the shaking direction and the shaking frequency of the cold water pipe to be connected and the cold water pipe at the wellhead of the ship body consistent, thereby reducing the connection difficulty of the two cold water pipes.

The utility model discloses a connecting structure of a flexible printed circuit board, a display panel and a male seat flexible printed circuit board. The male seat flexible printed circuit board is provided with a first clamping part; the female seat flexible printed circuit board is provided with a second clamping part; and the first clamping part is clamped with the second clamping part. According to the utility model, the connection between the male seat flexible printed circuit board and the female seat flexible printed circuit board is simplified, the connection difficulty is reduced, and the connection efficiency is improved.

The utility model belongs to the technical field of self-moving equipment trains, and discloses a mining hydraulic equipment moving train group connecting piece which comprises a first connecting piece and a second connecting piece which are detachably connected, the first connecting piece and the second connecting piece are fixedly connected to two adjacent moving trains respectively, and the first connecting piece comprises a connecting pipe. The second connecting piece comprises a conical rod, one end of the connecting pipe is opened to form an inserting groove matched with the conical rod, a plurality of limiting pieces tending to move towards the axis of the connecting pipe are installed on the circumferential face of the connecting pipe, and the circumferential face of the conical rod is sunken inwards to form a plurality of limiting holes matched with the limiting pieces one by one. The limiting pieces are inserted into the limiting holes so that the conical rods can be fixed into the inserting grooves, the limiting pieces are inserted into the limiting holes in the conical rods so that the two adjacent moving trains can be connected, the device can be connected without a complex structure, the connecting difficulty of the adjacent moving trains is lowered, and the failure rate and later maintenance difficulty of the device are lowered.

The application discloses a battery module and a vehicle, and belongs to the technical field of batteries. The battery module comprises a single battery, an end plate, a control assembly and a first circuit board. The end plate is connected to one side of the single battery. The control assembly is arranged on the side of the end plate away from the single battery and is connected to the end plate. The first circuit board is connected to the single battery and the control assembly. The single battery, the end plate and the control assembly are arranged on the same side of the first circuit board. According to the application, the control assembly is connected to the end plate, so that the control assembly and the end plate form an integral whole, the connection between the control assembly and the first circuit board can be completed before the battery module is put into a box, and the connection difficulty is reduced.