4905 results about "Junction box" patented technology

The invention provides a method and system for monitoring the running state of a photovoltaic power station in real time, and relates to the technical field of photovoltaic power station monitoring, and the method comprises the steps: integrating a multi-mode sensor array in a photovoltaic module junction box, and collecting the sensor data of the photovoltaic power station in real time; performing localization preprocessing on the sensor data through an edge computing node, and transmitting different priority data to a cloud based on a dynamic hybrid communication protocol; sensor data are fused at the cloud, a four-dimensional digital twinborn model is constructed, and time-space continuous meteorological prediction, component aging and dust retention evolution data are fused; recognizing the fault mode of the photovoltaic power station, and dynamically optimizing the string topological structure of the photovoltaic power station in combination with the real-time operation state of the photovoltaic power station, the equipment health data and the fault mode recognition result; by integrating the distributed sensor, the edge calculation module and the intelligent alarm mechanism, the problems of delay, insufficient intelligent analysis and response lag in the prior art can be effectively solved.

A plasma processing system includes a pulsed voltage source configured to generate a pulsed voltage waveform having a first frequency. The plasma processing system includes a radio frequency source configured to generate a radio frequency waveform having a second frequency that is higher than the first frequency. The plasma processing system includes a junction box enclosure electrically coupling the pulsed voltage source to a direct current conductor coupled to a substrate support and further electrically coupling the pulsed voltage source to a radio frequency conductor coupled to a radio frequency baseplate. The junction box enclosure includes a pulsed voltage filter circuit coupled between the radio frequency source and the radio frequency conductor and operable to filter the pulsed voltage waveform. The junction box enclosure further includes a radio frequency filter circuit coupled between the pulsed voltage source and the direct current conductor and operable to filter the radio frequency waveform.

A recreational vehicle includes a power source, a first electrical junction box, a second electrical junction box, a chassis power subsystem, and a recreational vehicle (RV) power subsystem. The first electrical junction box is electrically coupled between the power source and the second electrical junction box, the first electrical junction box is electrically coupled between the power source and the chassis power subsystem, and the second electrical junction box is electrically coupled between the first electrical junction box and the RV power subsystem.

The invention relates to the technical field of chip packaging, and discloses a diode packaging structure facilitating chip packaging and a photovoltaic junction box.The structure comprises a copper-clad plate, the top of the copper-clad plate is fixedly connected with one or more chip bodies, the right side of the top of the copper-clad plate is fixedly connected with soldering tin, and the left side of the top of the copper-clad plate is provided with a connecting port; four positioning holes are formed in the surface of the copper-clad plate, two rectangular grooves are formed in the surface of the copper-clad plate, and a cable is fixedly connected to the left side of the copper-clad plate. The chip body is packaged through resin pouring, the mold manufacturing cost required by traditional packaging is omitted, the overall production cost is greatly reduced, the resin pouring can be accurately allocated according to the characteristics of the chip and is highly matched with the thermal expansion coefficient of the chip, the packaging stress is greatly reduced, and the packaging efficiency is improved. The conditions of welding spot cracking and internal structure damage caused by stress problems in the packaging process and subsequent use of the chip are effectively avoided, and the damage risk of the chip is reduced.

The utility model relates to a photovoltaic junction box convenient to disassemble and maintain, which belongs to the technical field of photovoltaic junction boxes, and comprises a photovoltaic junction box main body, a rectangular hole is arranged on the top surface of the photovoltaic junction box main body, a disassembly plate is slidably connected in the rectangular hole, a fixing mechanism is arranged on the photovoltaic junction box main body, and the photovoltaic junction box main body is fixed on the fixing mechanism. A dustproof net plate is mounted on the dismounting plate, and a limiting mechanism is arranged on the dismounting plate; the fixing mechanism comprises a pulling plate fixed to the top face of the dismounting plate, two fixing blocks are fixed to the left side and the right side of the dismounting plate correspondingly, and two fixing grooves are formed in the top wall of the photovoltaic junction box body and located in the left side and the right side of the rectangular hole correspondingly. The top surface of the photovoltaic junction box main body is provided with four dismounting grooves which are respectively communicated with the four fixing grooves, and the top wall of the photovoltaic junction box main body is internally provided with an accommodating groove. According to the photovoltaic junction box convenient to disassemble and maintain, the disassembly plate can be quickly and conveniently disassembled through the fixing mechanism, and the maintenance convenience is better.

The invention relates to the technical field of junction boxes, in particular to a communication cable junction box based on a monitoring, regulating and controlling assembly, which comprises a box body, a plurality of spaced openings are formed in two side walls of the box body, a sliding door is arranged in each opening in a sliding manner, the sliding door is L-shaped and comprises a transverse plate and a vertical plate which are vertically connected with each other, and a threading hole is formed in the vertical plate of the sliding door. A sealing assembly used for sealing the threading hole is arranged in the box body, a mounting plate is fixedly connected to the center in the box body, and a plurality of wiring assemblies distributed at intervals are arranged on the mounting plate. Through the design of the sliding door, access and wiring operations of cables can be completed without manually opening the whole box door, and the opening times of the box door are reduced, so that the risk that the environment in the box is invaded by external factors is effectively reduced, the interior of the box is kept dry and clean, mutual independence of cable connection is kept, and meanwhile, the service life of the box is prolonged. And through the linkage design of the sliding door and the wiring assembly, the access and fixation of the cable can be synchronously carried out, and the working efficiency is further improved.

The utility model discloses an automatic disassembly device for photovoltaic panels, which mainly includes two disassembly systems, wherein the disassembly system mainly includes a feeding track, a disassembly component, a glass breaking component, a shredding component, two material receiving components and a control component, wherein the junction box and the frame of the photovoltaic panel are disassembled at the same time through the disassembly component, thereby saving steps in the disassembly process of the photovoltaic panel, thereby reducing the disassembly time of the photovoltaic panel, and at the same time, through the joint action of the shredding track, the disassembly component, the glass breaking component, the shredding component, the two material receiving components and the control component, the disassembly device automatically disassembles the photovoltaic panel, thereby making the disassembly efficiency of the photovoltaic panel faster and consuming less manpower, and at the same time, the provision of the two disassembly systems further improves the disassembly efficiency of the photovoltaic panel.

The present invention relates to a single container type single glass photovoltaic module recycling device, which includes a container, a loading device, a junction box removal device, and a glass removal device. On the one hand, the present invention is based on the loading device, the junction box removal device, and the glass removal device arranged in the same container, that is, the on-site cell recovery of the frameless single glass module is completed under the premise of effectively reducing the container restriction factor; on the other hand, under the same benchmark, the flat feeding of the photovoltaic module and the flat discharging of the cell are maintained, and the preheated single glass module is successively subjected to a slotting cutting group and a sweeping cutting group to remove the glass layer in a covering and pushing manner, which not only reduces the probability of cell breakage or damage, but also the formed glass peeling rate exceeds 98%.

The invention discloses a temperature and humidity monitoring and dehumidification integrated device for an optical cable connector box of an electric power tower, and relates to the technical field of electric power engineering, the temperature and humidity monitoring and dehumidification integrated device comprises an optical cable connector box body, and a controller is arranged on the outer surface of the optical cable connector box body close to the edge of one side. According to the temperature and humidity monitoring and dehumidification integrated device for the optical cable connector box of the electric power tower, when saturated silica gel enters the communicating pipe, moisture in the silica gel is evaporated out by heating the silica gel, and is discharged through the air outlet pipe until the moisture in the silica gel is completely discharged; when silica gel needs to be added into the optical cable connector box body again for dehumidification, the electric push rod is started, the piston moves to the position, with the inner diameter larger than the outer diameter of the piston, in the drainage tank, and then the silica gel moves to the interior of the limiting sleeve. Therefore, the interior of the optical cable connector box body can be dehumidified again.

The invention provides a YOLOv7-based photovoltaic module fault detection method and a YOLOv7-based photovoltaic module fault detection device, and relates to the technical field of target detection. According to the method, a thermal infrared and temperature information fusion module is introduced at the front end of a network, a thermal infrared image and a pixel-level temperature matrix thereof are fused through alignment, coding and attention mechanisms, and the characterization capability of multi-modal features is enhanced. A shallow layer-deep layer information aggregation module is introduced into the neck network, and the context perception and feature discrimination ability of the model to a multi-scale small target is improved. A global context sensing module is introduced in front of a detection head, a directional channel context branch and a query-key value branch of the global context sensing module capture directional global dependence and spatial context relations respectively, and global modulation of features is achieved. According to the method, the detection precision and robustness of various faults such as faults, fragmentation, hot spots and shielding of the photovoltaic module junction box are remarkably improved, the weak and small target positioning capability is optimized, the method is suitable for being deployed on mobile or embedded equipment, and efficient and intelligent inspection of a photovoltaic power station is achieved.

The utility model discloses an electric heater junction box with a wire arrangement function, which relates to the technical field of electric heaters, and comprises a junction box, a wire inlet and a wire outlet are respectively arranged at two ends of the junction box, wire arrangement mechanisms are arranged at upper and lower symmetrical positions in the junction box, a box cover is arranged on one side of the junction box, and the box cover is connected with the junction box through a fixing mechanism. According to the utility model, through the wire arrangement mechanism, the position of the U-shaped frame can be adjusted according to needs, wire harnesses in the junction box can be classified and clamped into the U-shaped frame, and then the wire harnesses are connected with the wire arrangement seat through the limiting frame, so that the wire harnesses are restrained and limited, disorder of the wire harnesses is avoided, later maintenance is facilitated, the workload of maintenance workers is reduced, and the working efficiency is improved. The wire arranging seat and the limiting frame can be quickly detached or connected, so that the later maintenance is facilitated, the use is convenient, and the practicability is higher; according to the utility model, through the fixing mechanism, the box cover can be conveniently and rapidly disassembled or fixed, so that the interior of the junction box can be conveniently disassembled in the later period for overhaul and maintenance.

The utility model relates to junction box installation equipment, which belongs to the technical field of junction box installation equipment and comprises a rack, and a junction box conveying unit, a junction box detection unit, a solar cell panel conveying unit, a junction box transfer unit and a junction box assembly unit are arranged on the rack. The junction box conveying unit is used for conveying junction boxes to the junction box transfer unit; the junction box detection unit is used for detecting the weight and appearance of the junction box when the junction box conveying unit conveys the junction box; a junction box assembling station is arranged on the rack, and the solar cell panel conveying unit is used for conveying solar cell panels to the junction box assembling station; and the junction box assembling unit is used for assembling the junction box at the junction box transfer module on a connecting wire on the solar cell panel at the junction box assembling station. According to the utility model, the automatic assembly of the junction box can be realized, the assembly efficiency is higher, and the labor cost can be effectively reduced.

Disclosed in the present application is a disassembly device, comprising a carrying base, and a loading apparatus, a junction box and frame removal apparatus, a glass sheet removal apparatus and a backsheet removal apparatus, which are arranged on the carrying base, wherein the loading apparatus is used for gripping a photovoltaic panel at a loading station; the junction box and frame removal apparatus is arranged downstream of the loading apparatus, and is used for removing a junction box and a frame of the photovoltaic panel conveyed by the loading apparatus; and the glass sheet removal apparatus and the backsheet removal apparatus are both arranged downstream of the junction box and frame removal apparatus, the glass sheet removal apparatus is used for removing a glass sheet of the photovoltaic panel, and the backsheet removal apparatus is used for removing a backsheet of the photovoltaic panel.

The invention relates to the technical field of electromechanical coupling damage diagnosis, and discloses a wind and light storage system electromechanical coupling damage diagnosis method and system.The wind and light storage system electromechanical coupling damage diagnosis method includes the steps that according to geometric data, material attributes and load data of a welding point area, a finite element mechanical model is constructed, and stress distribution data is calculated; according to the environment data and the electrochemical data, a corrosion kinetic model is constructed, and corrosion product parameters are obtained; according to the corrosion product parameters, an elastic modulus degradation model is established, and an inherent frequency degradation value and vibration mode displacement are obtained; performing vibration response analysis on the junction box according to the inherent frequency degradation value and the vibration mode displacement to obtain a stress concentration coefficient; and inputting the electrical parameter variation and the stress concentration coefficient into a damage failure evaluation model to obtain a damage failure evaluation result of the electrical connection point. Through the multi-dimensional coupling model and the dynamic parameter closed-loop feedback mechanism, the electromechanical coupling damage assessment accuracy is effectively improved, and the operation safety and the operation and maintenance efficiency of the wind and light storage system are improved.

The invention discloses a new energy power station operation and maintenance method and system based on artificial intelligence, and relates to the field of photovoltaic operation and maintenance management, and the method comprises the steps: collecting the output power and module temperature of each group string at a combiner box side, calculating the mean value and variance of power, generating node features through combining with the temperature, and obtaining the environment vector of a whole station; constructing a graph structure by taking the group string as a node and the electrical connection as an edge, and inputting the graph structure and the environment vector into a graph attention network to obtain a mismatch score of each group string; and constructing a decision model by taking the mismatch score and the number of optimizers as input, solving an optimal compensation scheme and issuing a compensation instruction to a corresponding DC / DC optimizer to realize dynamic mismatch compensation. Therefore, the self-adaptive capability of the photovoltaic power station in a complex environment is improved, and the operation and maintenance intelligent level is improved.

The invention provides a pyrolysis recovery method of a waste photovoltaic module, and relates to the technical field of photovoltaic panel recovery, the method comprises the following steps: pre-disassembling to obtain an aluminum frame, a junction box and a multilayer board; the multilayer board is conveyed to a pyrolysis tunnel furnace, and pyrolysis gas and a pyrolysis multilayer board are obtained; wherein the temperature in the furnace is 200-380 DEG C; classifying the pyrolyzed multilayer boards to obtain complete pyrolyzed boards and fragmented pyrolyzed boards; disassembling the complete pyrolysis plate to obtain first EVA pyrolysis residues, a complete glass plate, a complete battery silicon wafer and a complete back plate; the fragmented pyrolysis plate is cut, and pyrolysis particles are obtained; sorting the pyrolysis particles to obtain second EVA pyrolysis residues, glass particles, battery silicon wafer particles and backboard particles; the first EVA pyrolysis residues and the second EVA pyrolysis residues are mixed, and mixed pyrolysis residues are obtained; conveying the mixed pyrolysis residues to a pyrolysis tunnel furnace to obtain an olefin mixture and third pyrolysis residues; wherein the temperature in the furnace is 500-600 DEG C;

The invention discloses a voltage balancing device of a 10KV three-element combined mutual inductor and a using method of the voltage balancing device, and relates to the technical field of mutual inductors. The voltage balancing device of the 10KV three-element combined mutual inductor comprises a first mutual inductor shell, the voltage balancing device comprises a second mutual inductor shell, a voltage mutual inductor is installed in the first mutual inductor shell, and a current mutual inductor is installed in the second mutual inductor shell. The front end of the first mutual inductor shell is fixedly connected with a mutual inductor junction box, a voltage stabilizer is installed outside the first mutual inductor shell, and by means of Y-shaped connection of a secondary winding of the voltage mutual inductor and use of a circuit breaker and the voltage stabilizer, voltage balance of the voltage mutual inductor is facilitated; the Y-shaped connection can guarantee three-phase balance while providing a stable power supply, has an effect of absorbing harmonic waves, improves the power supply efficiency, avoids equipment damage caused by overload, and guarantees good operation of low-voltage power grid protection.

The invention relates to the technical field of junction box anomaly detection, in particular to a metering junction box wiring terminal anomaly detection method and system. The method comprises the following steps: firstly, based on voltage drop deviation between different output voltages of voltage terminals, screening out suspected normal terminals from all the voltage terminals; then acquiring a temperature anomaly coefficient and an input anomaly coefficient of each group of suspected normal terminals at each moment, and further combining change correlation of the input voltage and the temperature anomaly coefficient to determine a to-be-analyzed terminal; and further evaluating the output abnormal coefficient of each group of terminals to be analyzed, and determining a normal terminal by combining the time sequence change correlation between the output voltage of each output end and the terminal temperature and the input abnormal coefficient. According to the invention, on the basis of the circuit characteristics of the voltage terminals and in combination with the change relevance between the temperature and the voltage, the voltage terminals are discussed according to conditions so as to accurately analyze and evaluate the abnormity possibility of each group of voltage terminals in real time, and the abnormity detection effect of the wiring terminals of the metering junction box is improved.

A fast response platinum resistor temperature sensor comprises a sensor housing, a measuring end of the sensor housing is provided with a sensor element, the sensor element comprises a ceramic cylinder, a front end of the ceramic cylinder is provided with packaging ceramic, the packaging ceramic is provided with a plurality of through holes, a rear end of the ceramic cylinder is provided with heat conduction ceramic, and the heat conduction ceramic is provided with a plurality of through holes. A temperature measuring platinum wire is arranged at the upper end of the interior of the ceramic cylinder and connected with a platinum resistor lead, a thermoelectric material wire is arranged at the lower end of the interior of the ceramic cylinder, the front end of the thermoelectric material wire is welded with a leading-out wire to form a second hot junction, and the rear end of the thermoelectric material wire is welded with another leading-out wire to form a first hot junction. The lead-out wire penetrates through a through hole in the packaging ceramic, the platinum resistor lead is connected with a platinum resistor signal lead arranged in the sensor shell, the lead-out wire is connected with a thermoelectric material wire signal lead, the platinum resistor signal lead and the thermoelectric material wire signal lead are fixedly connected with a sensor junction box, and the sensor shell is filled with an insulating material.

The invention provides a high-value recovery method and device for a retired double-glass photovoltaic module. The high-value recovery method comprises the four steps of lossless disassembly of a frame and a junction box, gradient separation of double-sided glass, segmented pyrolysis of inert gas and material sorting. On the basis of gradient pyrolysis and flexible separation and recovery technologies, nondestructive recovery of the double-sided glass is realized, and complete separation of the double-sided glass is realized by gradient heating and flexible stripping technologies; high-value battery pieces are reserved, and thermal damage is avoided through segmented pyrolysis and ultrasonic vibration; resources are circulated in a closed-loop mode, the reutilization rate of glass, battery pieces and welding strips is high, and the retired double-glass assembly can achieve all-material closed-loop recycling.

The utility model provides a junction box preparing and feeding device which comprises a first manipulator, wired junction box bins, a conveying belt device and wired junction box positioning seats are arranged on the two sides in the Y-axis direction of the first manipulator respectively, and a wireless junction box supply device is further arranged on the outer side of the conveying belt device. The junction box feeding device comprises two second manipulators, and the execution ends of the second manipulators are provided with junction box carrying assemblies; according to the structure, the first manipulator can neatly arrange the wired junction boxes on the conveying belt device, the first manipulator places the wired junction boxes on the conveying belt device on the wired junction box positioning seat, and the wireless junction box supply device can automatically and continuously convey the wireless junction boxes to the position where the second manipulator can grab the wireless junction boxes conveniently; according to the scheme, the two second manipulators can be started at the same time, the multiple wired junction boxes or the multiple wireless junction boxes can be grabbed and placed on the photovoltaic panel at the same time, and therefore the machining efficiency is high.

The utility model discloses a motor base structure easy to radiate heat, which belongs to the technical field of motors and comprises a junction box base, the junction box base is arranged on a base shell, a plurality of ventilation slot assemblies are arranged on the periphery of the upper portion of the base shell, and a plurality of ventilation pipe assemblies are arranged between every two adjacent ventilation slot assemblies. A plurality of heat dissipation fins are further arranged on the upper portion of the machine base shell, an efficient heat dissipation system is jointly formed through the ventilation groove assembly, the ventilation pipe assembly and the heat dissipation fins, the ventilation groove assembly and the ventilation pipe assembly accelerate air flow in the machine shell, and the heat dissipation fins increase the heat dissipation area. Therefore, heat in the inner cavity of the motor can be dissipated to the outside more quickly, the internal temperature of the motor can be effectively prevented from being too high, the service life of the motor is prolonged, and the working stability is improved.

Embodiments employ Artificial Intelligence (AI) techniques to collect and analyze data associated with material input to a solar module recycling system, including e.g., AI model(s) and / or the recycling and recapture of the component materials. Recycling hardware for various functional areas (e.g., junction box / frame / glass removal; chemical / mechanical / physical separation; testing; sorting; cleaning; others) may be integrated to a central engine for processing and / or storage (e.g., in a database). Analysis of module recycling using the AI techniques may consider one or more of the following: module model; module manufacturer; module type (e.g., c-Si versus CdTe); power rating; module history; module label information; predicted / actual market prices; others. An outcome of AI analysis can offer estimates of resultant effect(s) upon speed and efficiency, by which materials travel through the recycling system. One possible benefit is the ability to rapidly optimize system parameters, providing high solar module throughput in the recycling system over time.

To provide a vehicle powertrain structure capable of ensuring safety during a vehicle collision, a vehicle includes a drive system, a battery, and an inverter. The drive system has a motor for travel of the vehicle and a motor housing formed of a conductive material. A direct current (DC) connector, to which a wire extending from the battery is connected, is disposed in a rear wall portion of the battery housing. The motor housing accommodates DC bus bars that connect the DC connector and a circuit section of an inverter and an auxiliary machine wire that connects between the DC connector and an electric compressor mounted on the vehicle. A junction box in which the auxiliary machine wire is branched from the DC bus bars is arranged in a rear space behind a motor accommodation space that accommodates a stator and a rotor of a motor.

“A battery pack assembly, comprising: a battery pack, the battery pack comprising: a battery pack enclosure, and one or more battery cells within the battery pack enclosure, and a junction box, the junction box comprising: a junction box enclosure including one base wall, four side walls connected to the base wall, and one open end, and a battery management unit, at least one fuse, and at least one switch, each located within the junction box enclosure and mounted to the base wall. The four side walls of the junction box enclosure are removably secured to the battery pack enclosure at the open end.”

The invention discloses a bus connection optimization device for a low-voltage standardized switch cabinet, and belongs to the technical field of power equipment. The connection optimization device comprises a junction box, a through groove which is arranged on the junction box and is used for a bus to pass through, and abutting pieces which are symmetrically arranged in the through groove and are used for fixing a bus copper bar hole on the junction box, the screw rod is arranged on the abutting piece; and the driving assembly is arranged on the junction box, is connected with the screw rod and is used for moving and locking the screw rod. According to the bus connection optimizing device for the low-voltage standardized switch cabinet, through the combined design of the air bag and the air pump assembly, when the bus expands due to heating, the air bag can be telescopic to buffer the expansive force of the bus, and the problem of loose connection of bolts and bus copper bar holes caused by the expansion due to heating in the prior art is effectively solved; therefore, the connection stability between the bus and the junction box is improved, and the reliability of power transmission is ensured.

The invention discloses a method for recycling EVA and silver of a waste photovoltaic panel laminated piece, which comprises the following steps: S1, removing an aluminum frame and a junction box, and stripping a back plate; s2, EVA on the back of the laminated part is removed; s3, EVA on the front face of the laminated piece is removed; and S4, recovering the silver electrode of the silicon battery piece. The invention provides the method for accurately controlling the EVA (Ethylene Vinyl Acetate) at the front part and the back part of the photovoltaic laminated piece to be cleanly and quickly separated and separating the silver electrode on the silicon battery piece by using laser as a main process, chemical reagents are not needed in the whole process, crushing and sorting are not needed, and the silver with high additional value and the complete silicon battery piece are obtained; the method has the characteristic of efficient and accurate utilization of energy. According to the method, the non-destructive rapid recovery of EVA is realized, and meanwhile, a silver recovery method with low environmental influence is adopted, so that great convenience is provided for subsequent efficient remanufacturing, and considerable circular economic benefits can be brought.

The utility model discloses a confluence cabinet, which comprises a confluence cabinet body and a protection assembly, a first input copper bar group, a first output copper bar group, a second input copper bar group, a second output copper bar group and an isolating switch are arranged in the confluence cabinet body, and the first input copper bar group and the first output copper bar group are correspondingly arranged on two sides of the isolating switch along a first direction. And the switch is electrically connected with the isolating switch. And the second input copper bar group and the second output copper bar group are correspondingly arranged on two sides of the isolating switch along the first direction and are electrically connected with the isolating switch. And the first input copper bar group and the second input copper bar group are arranged at intervals along the second direction. And the isolating switch has a switch-on state and a switch-off state and is used for isolating the confluence cabinet from a power utilization system. The protection assembly comprises direct current fuses which are respectively arranged in the first input copper bar group and the second input copper bar group and are used for protecting circuits and equipment from being damaged by overcurrent, so that the safety and the reliability of the system are improved.

The utility model discloses an insulating junction box for a traction motor, which comprises a junction box main body and a cover body, and the junction box main body is provided with a motor lead hole and a cable hole; the connection box main body and the cover body are both made of insulating materials, the connection box main body is provided with a first embedded body and a second embedded body, the first embedded body is located at the edge of the connection box main body, and the first embedded body is provided with a first inner screw hole used for installing the cover body; the second embedded body is arranged corresponding to the inner cavity of the connecting box main body, and the second embedded body is provided with a second inner screw hole; and the first embedded body, the second embedded body and the connecting box main body are integrally formed. According to the utility model, the junction box is made of an insulating material, thereby avoiding the large size of the junction box caused by the electrical clearance requirement of a metal junction box, and achieving the small size and light weight design; the first embedding body, the second embedding body, the third embedding body and the connecting box main body are integrally formed, so that a complicated assembling process is avoided, the labor intensity is reduced, and the motor assembling efficiency is improved.

A battery pack includes: a case including a lower case and an upper case that face each other in a first direction; a battery stack that is housed in the case and includes a plurality of battery cells; a junction box that is housed in the case and includes a relay; and a cross portion that is housed in the case, is disposed between the battery stack and the junction box in a second direction orthogonal to the first direction, and is fixed to the lower case. The junction box is attached to the cross portion, and the junction box includes a first portion disposed at a position overlapping the cross portion in the first direction, the first portion extending in the first direction and contacting the upper case.