42results about How to "Reduce welding difficulty" patented technology

A box type guide rail of a hydraulic climbing device of a tower building machine comprises two side plates, a middle plate is arranged between the two side plates, and the middle plate and the side plates are connected in an inserted mode and then fixed in a welding mode to form the box type guide rail. The box-type guide rail aims to solve the technical problem of a box-type guide rail in a hydraulic climbing device of a tower building machine, a traditional box-type guide rail is difficult to weld and form and poor in consistency, an innovative structure that the middle plate and the side plates are welded after being connected in an inserted mode is adopted, the middle plate and the side plates are cut through laser, and matched plugs and insertion holes are designed; wherein a chamfer is arranged at the outer side end of the plug, so that the welding difficulty is successfully reduced, the consistency of each box type rail finished product is ensured, the production quality and efficiency of the box type guide rail are effectively improved, and reliable guarantee is provided for stable operation of a tower building machine.

The application relates to a heat dissipation device, a power assembly and an electrical equipment. The heat dissipation device comprises a heat dissipation body and an end plate assembly. The heat dissipation body defines a heat dissipation groove extending along a first direction, the heat dissipation groove being used for accommodating a heating element. The heat dissipation body has a heat dissipation channel, the heat dissipation channel being arranged on the peripheral side of the heat dissipation groove, and a cooling medium flows through the heat dissipation channel. The end plate assembly is arranged at the end of the heat dissipation groove along the first direction. At least one end plate assembly comprises an inner end plate and an outer end plate. The inner end plate and the outer end plate are arranged on the heat dissipation body in a stacked manner along the first direction. An accommodation space is defined between the inner end plate and the outer end plate and is communicated with the heat dissipation channel. The application is beneficial to improving the convenience of welding, reducing the difficulty of welding, facilitating the welding of firm welding points, reducing the risk of liquid leakage, and improving the cooling performance of the heat dissipation device.

This utility model provides a stainless steel air conditioning pipe, relating to the field of air conditioning pipe technology, comprising: a straight air conditioning refrigerant pipe, wherein an air conditioning refrigerant elbow is connected to the side end of the straight air conditioning refrigerant pipe via a pipe fitting; a stainless steel outer pipe layer is provided on the outer side of the straight air conditioning refrigerant pipe, and a copper inner pipe layer is laminated on the inner side of the stainless steel outer pipe layer; the surface of the copper inner pipe layer is coated with a nano-modified coating and a PTFE inner lining layer; the pipe fitting is welded to the copper inner pipe layer via a connecting inner pipe; and a pipe clamp is fixed to the outer end of the pipe fitting. This utility model solves the problem in the prior art where the copper pipe and stainless steel pipe are welded together as a single piece, resulting in inconvenience during the transportation and installation of stainless steel air conditioning pipes.

The utility model belongs to the technical field of pipeline welding, and particularly relates to a pipeline butt joint auxiliary device for water supply pipeline welding operation, which comprises a base, guide rods and a middle limit seat, the guide rods are symmetrically arranged on the base in the middle of the middle limit seat, and the guide rods penetrate through the middle limit seat. A guide rod is installed on the base, welding moving frames are slidably arranged at the two ends of the guide rod, clamping jaws are slidably arranged on the surfaces of the welding moving frames, adjusting lead screws are rotatably arranged in inner cavities of the welding moving frames, a servo driving motor is installed at the end of the base, and the power output end of the servo driving motor is in transmission connection with a driving screw shaft. The welding pipeline and the connecting pipe head can be controlled to get close to each other and get away from each other, the welding pipeline and the connecting pipe head can be rapidly welded by being matched with a fuse machine, the welding efficiency of the pipeline can be improved, meanwhile, the welding pipeline moves in the horizontal direction, the welding difficulty can be reduced, and the welding precision of the pipeline can be improved.

The utility model discloses a staggered winding type heater. The technical problem that an existing heater is complex in structure is solved. The device comprises an inner side support and a first staggered winding pipe set. The first staggered winding pipe set comprises a plurality of first arc-shaped pipes, a plurality of second arc-shaped pipes and a plurality of first connecting pipes. The first arc-shaped pipe and the second arc-shaped pipe are arranged in different planes. The first ends of the first arc-shaped pipes are communicated with the first ends of the second arc-shaped pipes through the first connecting pipes, the second ends of the first arc-shaped pipes are communicated with the second ends of the other second arc-shaped pipes through the first connecting pipes, and the first arc-shaped pipes and the second arc-shaped pipes are sequentially communicated and wound outside the inner side supporting frame. The bending radius of the first arc-shaped pipe is larger than that of the second arc-shaped pipe. According to the staggered winding type heater, the manufacturing requirements of complex parts are reduced, and the production cost and the production difficulty are reduced. And the first arc-shaped pipe and the second arc-shaped pipe are arranged on different surfaces and are wound outside the inner side supporting frame, so that the heater is compact in overall structure, and limited space can be fully utilized.

The invention relates to the technical field of welding, and discloses a composite brazing film and a preparation method and application thereof, and the method comprises the steps (1), (2-A) and (3); alternatively, the method comprises the steps (1), (2-B) and (3). The method comprises the following steps: (1) providing a solder net, wherein the solder net is a copper net of which the surface layer is electroplated with metal solder; or the preparation method of the solder mesh comprises the following steps: sequentially coating the adhesive and the tin powder on the surface of the copper mesh to obtain the solder mesh; (2-A) preparing a composite body: sequentially paving and stacking a solder net, tin powder, self-propagating powder, a solder net and tin powder to obtain the composite body; (2-B) preparing a composite body: dividing the self-propagating powder into two parts, and then sequentially tiling and stacking the first part of self-propagating powder, the solder net, the tin powder and the second part of self-propagating powder to obtain the composite body; (3) pre-pressing and rolling the composite body in sequence; wherein the rolling temperature is 80-180 DEG C. The composite brazing film prepared through the method is small in bending radius and high in production efficiency.

The invention discloses a battery module and energy storage equipment. The battery module comprises a first battery cell assembly and a first bus piece. The first battery cell assembly comprises a plurality of first battery cells arranged in the first direction, each first battery cell comprises a first battery cell body and a first electrode terminal, each first electrode terminal comprises a welding part and a connecting part, and the connecting parts are connected with the welding parts and the first battery cell bodies. The plurality of first battery cells comprise a first single battery cell, a second single battery cell, a third single battery cell and a fourth single battery cell which are arranged in sequence. The first confluence piece is positioned on one side of the welding part far away from the first battery cell main body. The first bus piece is provided with a first welding area and a second welding area, the first welding area is welded with the welding part of the first single cell, the second welding area is welded with the welding part of the second single cell, the welding part of the third single cell and the welding part of the fourth single cell, and the first welding area and the second welding area are arranged at an interval.

The invention belongs to the technical field of non-oriented silicon steel laser welding, and relates to a welding and rolling method for welding seams of thin-gauge non-oriented silicon steel. According to the method, the head and the tail of the thin-specification large-grain non-oriented silicon steel substrate with the width of 1000-1200 mm are welded through an effective welding process, the rolled hard plate is smoothly rolled through five-rack acid continuous rolling, continuous production of cold continuous rolling is achieved, the production efficiency is greatly improved, the improvement of the product quality stability is facilitated, and the production cost is reduced. And products with consistent thickness, performance and surface quality can be obtained more easily.

This application discloses a method for improving the yield of hot-rolled titanium and titanium alloy plates, relating to the field of hot rolling processing of titanium and titanium alloy plates, including the following steps: Step 1, material head screening; Step 2, surface treatment of the material heads obtained in Step 1 by peeling, polishing or sandblasting and pickling; Step 3, material head welding; Step 4, material head rolling; Step 5, heat treatment of the finished plate; Step 6, surface treatment and slitting of the finished plate after heat treatment in Step 5 to obtain qualified finished titanium and titanium alloy plates. This invention solves the problem of easy breakage of traditional welds during hot rolling in the prior art, enhances the stability of the hot rolling process, reduces welding difficulty, simplifies the production process, improves the yield stability, and increases the product yield and production efficiency.

The utility model relates to the technical field of ship piping system welding, and discloses a hubbed flange assembling and welding tool which comprises a fixing pipe (1) arranged on a welding platform (12), a sleeve (2) arranged on the fixing pipe (1), a positioning hole (13) formed in one side wall of the sleeve (2), and a positioning piece (3) arranged in the positioning hole (13). The other side wall of the sleeve (2) is connected with a locking piece (5) through a connecting piece (4), and one end of the connecting piece (4) is installed on a connecting plate (6) through a fixing piece (10). An argon hole (11) is formed in the connecting plate (6), and the argon hole (11) is located on the edge of the fixing piece (10) and within the range of the inner hole diameter of the center of a flange plate of the hubbed flange (7); an argon connector (9) is arranged on the argon hole (11); the connecting plate (6) is connected with a hubbed flange (7) through a kidney-shaped hole (14), and the hubbed flange (7) is connected with a straight pipe (8). Argon filling is convenient, overhead welding is avoided, and welding difficulty is reduced.

This utility model discloses a fixing device for battery processing, including a base. A left side plate and a right side plate are arranged in parallel on the upper end of the base. A second working support plate is fixedly connected between the left side plate and the right side plate. A first working support plate is provided above the second working support plate. An installation groove is provided between the first working support plate and the right side plate. A welding nozzle, movably connected to the left side plate and the right side plate, is provided above the first working support plate. A clamping plate, movably connected to the left side plate, is provided above the second working support plate. By providing a support plate for welding, this application allows two batteries to be placed on the support plate simultaneously for welding during the welding process. It also allows two batteries to be connected in series or parallel to form a battery pack. Series welding increases the voltage of the battery pack, while parallel welding increases its capacity.

The utility model discloses a kind of concrete roofing air pipe rainproof devices, solve the problem of rain leakage of air pipe through concrete roofing.The device includes air pipe rainproof device, indoor air pipe, outdoor air pipe, air pipe support, concrete roofing air pipe hole, roofing floor, roofing insulation layer, roofing waterproof layer, roofing hole flanging and cement mortar;Air pipe rainproof device is composed of indoor and outdoor connecting air pipe and rain cover, indoor and outdoor connecting air pipe two ends are connected indoor, outdoor air pipe respectively through air pipe flange, and fixed by air pipe support and roofing hole flanging;Rain cover contains hem, skirt, vertical edge and middle support column, can be enclosed rainproof space and cover hole flanging, hole gap is blocked with non-combustible material.The device is adapted to rectangle / circle, heat preservation / cold preservation / non-heat preservation metal air pipe, rainproof effect is remarkable, structure is stable and durable, construction is convenient, can guarantee indoor environment and ventilation system safe operation.

The present application provides a thin-walled rectangular corrugated steel plate connecting joint welding method, comprising: laying multiple rectangular corrugated steel plates in sequence along the length direction and welding to obtain a whole corrugated steel plate; forming a circle through a circle forming device to make the leading end and the tail end of the whole corrugated steel plate butt joint to form a connecting joint; arranging at least one patching steel plate at the connecting joint, the patching steel plate covering the connecting joint, at least a part of the patching steel plate being in contact with the surface of the rectangular corrugated steel plates on both sides of the connecting joint, or at least a part of the patching steel plate extending into the interior of the connecting joint, and the patching steel plate being temporarily fixed on the surface of the whole corrugated steel plate through spot welding; feeding the whole corrugated steel plate temporarily fixed again into the circle forming device to perform circle processing; and welding the edges of the patching steel plate in contact with the corrugated steel plate to form four straight intermittent welds to fix the patching steel plate on the whole corrugated steel plate.

The utility model belongs to the technical field of rings, in particular to a ring connecting structure, which comprises a base and a rabbet, a connecting rod penetrating through the base from outside to inside is arranged at the bottom of the rabbet, a connecting piece fixed with the penetrating part of the connecting rod is arranged on the inner side of the base, and the rabbet and the connecting piece are components made of the same material. The bottoms of the connecting rods are connected with the fixed base through welding with the connecting pieces, and the number of the connecting rods is at least two; the first connecting hole is matched with the connecting rod, an automatic positioning function can be achieved when the first connecting hole and the connecting rod are in butt joint, positioning is not needed during welding, only the first connecting hole and the connecting rod need to be kept in a pressed state, and welding difficulty is reduced; meanwhile, the rabbet and the connecting piece are made of the same material, so that the mechanical strength and chemical compatibility after welding are guaranteed, the overall strength is higher, and the appearance is attractive.

This invention discloses a welding method for 9Cr-1Mo steel and 20MnMo steel. The welding method includes the following steps: S1, overlaying a transition layer; S2, cutting the transition layer; S3, machining the bevel of the transition layer side; and S4, butt-jointing the transition layer with the 20MnMo steel side. This welding method for 9Cr-1Mo steel and 20MnMo steel solves the problem of difficult welding of these two steels. Using alloy steel as the transition layer reduces welding costs, simplifies welding difficulty, and improves production efficiency.

The invention discloses a battery module and energy storage equipment. The battery module comprises a plurality of battery cell components, a first conductive part and a second conductive part, each battery cell assembly comprises a plurality of battery cells arranged along a first direction, the plurality of battery cell assemblies are arranged along a second direction, the adjacent battery cell assemblies are connected, and the first direction is perpendicular to the second direction. The first conductive member is connected to the at least one battery cell. And the second conductive piece and the first conductive piece are connected with the battery cell of the same battery cell assembly. The second conductive part is connected to at least one battery cell, the polarity of the first conductive part is opposite to that of the second conductive part, and the first conductive part and the second conductive part are configured to input and / or output electric energy for the multiple battery cell assemblies. And along the direction opposite to the second direction, the first conductive piece and the second conductive piece are positioned on the same side of the plurality of battery cell components. And along the first direction, the battery cell connected to the second conductive piece and the battery cell connected to the first conductive piece are adjacently arranged.

This utility model relates to the field of tippers, and more particularly to a novel pressure beam structure for a tipper. It includes a pressure beam body with hinged connection positions on both sides of the top of the body. These hinged connection positions are coaxially arranged, and their rotation axes are perpendicular to the pressure beam body. Each hinged connection position includes a base plate fixed to the pressure beam body. A pressure cap is provided above the base plate, and the base plate and pressure cap are detachably connected. Semi-circular grooves are provided on the opposite surfaces of the base plate and pressure cap, and two semi-circular grooves are assembled to form a complete circular opening. This utility model adopts a split structure, which reduces the welding and processing difficulty of the pressure beam and makes disassembly and assembly more convenient and flexible.

This invention discloses a method and mold for cryogenic pressure forming of a large, high-strength cylindrical ring structure, relating to the field of metal sheet forming technology. The forming method includes: Step 1, determining the initial dimensions of the cylindrical ring blank and the required forming temperature based on the shape, size, and performance indicators of the target cylindrical ring structure; Step 2, cutting the flat plate, rolling and welding it into a straight-walled cylindrical ring blank; Step 3, placing the cylindrical ring blank in a mold, filling the space between the cylindrical ring blank wall and the mold with a cryogenic medium and applying pressure, causing the cylindrical ring blank to undergo plastic deformation under cryogenic conditions until it adheres to the mold surface, thus obtaining a cylindrical ring structure with weld seam reinforcement consistent with the base material. The solution provided by this invention can improve the performance and manufacturing efficiency of large cylindrical ring structures and reduce manufacturing costs.

The application relates to the technical field of power batteries, in particular to a battery monomer, a manufacturing method and a battery pack, the battery monomer comprising a battery shell, an electric core, a busbar and a pole, the pole comprising an outer layer part and a core part, the outer layer part being wrapped around the outer periphery of the core part, the core part being protruded from the outer layer part at one end towards the busbar, the pole being arranged in the battery shell and being welded to the busbar, the outer layer part being sealingly welded to the busbar, the outer layer part being sealingly connected to a cover plate, the material of the outer layer part being different from that of the core part, the outer layer part and the busbar being sealingly welded, and a sealing weld being formed between the outer layer part and the busbar, the sealing weld permanently physically isolating the electrolyte in the battery monomer from the bonding surface between the core part and the outer layer part in the pole and the core part with a higher potential, so that the coexistence condition of the electrolyte and the dissimilar metal is eliminated, the risk of electrochemical corrosion in the pole is prevented, and the long-term safety and reliability of the battery are improved.

The application relates to a method for integrally manufacturing an electric arc additive manufacturing through member and the through member, and belongs to the electric arc additive manufacturing field.The method comprises the following steps: according to a three-dimensional model diagram of the through member, electric arc additive manufacturing is carried out by using low-alloy high-strength steel wire materials to obtain a through member with consistent structure and size of the three-dimensional model diagram; the through member comprises an integrally-formed through member body and flanges connected to two ends of the through member body.The method can integrally manufacture a through member with a complex shape, and can additionally manufacture a certain width of flange or skirt at the connecting position of the manufactured through member and a connecting plate, so that when the through member is connected with the connecting plate, the corner weld connection at the connecting plate can be changed into flat weld connection, the welding difficulty during the connection of the through member is greatly reduced, and the stress change caused by the asymmetric welding of the corner weld is reduced.

The utility model discloses a refrigerating unit of refrigerator, include: the compressor, condenser, capillary tube and evaporator that communicate in proper order, the export end of evaporator is communicated with the import end of compressor, and refrigerating unit forms refrigeration cycle, and the import end of evaporator is communicated with the export end of compressor between the bypass defrosting pipeline of compressor, and the bypass defrosting pipeline includes defrosting pipe and joint pipe fitting, and the import end of defrosting pipe is connected with the export end of compressor, and joint pipe fitting includes copper body and aluminum body, and copper body includes and sets up first slender tube department and second slender tube department side by side, and aluminum body includes joint pipe department, and first slender tube department and second slender tube department are communicated with joint pipe department simultaneously, and first slender tube department is connected with the export end of capillary tube, and second slender tube department is connected with the export end of defrosting pipe, and joint pipe department is connected with the import end of evaporator, the utility model discloses the joint pipe fitting of the utility model increases the stability of the connection between defrosting pipe and evaporator, reduces the welding difficulty, and is convenient for installation and later maintenance.

The present application belongs to the technical field of welding, and particularly relates to a welding device. The present application aims to solve the problem of high welding difficulty of a tank structure in the related art. The welding device comprises a machine table, a welding device, a first positioning mechanism and a second positioning mechanism for fixing pieces to be welded. At least one of the first positioning mechanism and the second positioning mechanism is movably arranged on the machine table. The first positioning mechanism and the second positioning mechanism are opposite to each other, and the first positioning mechanism is close to or away from the second positioning mechanism. The welding device is movably arranged on the machine table. In the case that the welding device moves to a first position, the welding device abuts against the butt joint of the two pieces to be welded. In the case that the two pieces to be welded are butted, the welding device moves to a second position, and the welding device is separated from the butt joint of the two pieces to be welded. The first positioning mechanism and the second positioning mechanism realize the butt joint and fixation of the two pieces to be welded, and can replace manual welding by the welding device, thereby reducing the welding difficulty of the tank structure.

The application discloses a railway freight car end wall flexible welding production line and relates to the technical field of railway vehicle production equipment. The feeding group is used to complete the queuing and spot welding of end wall parts on the pressing spot welding station. Then, the welding of the front surface flat weld, the front surface vertical weld and the back surface flat weld of the end wall part is completed in sequence through different welding stations. Finally, the end wall part is stacked after manual repair welding. The chain conveying device and the transfer trolley are used for transportation between stations, so that the circulation of key materials is realized without human intervention. The setting of the buffer station solves the problems of the end wall stall type welding, large occupation area, high labor intensity, discontinuous production, low production efficiency, poor environment and the like, realizes the automatic welding of the end wall of the open wagon, and realizes the cost reduction and benefit increase and the quality risk reduction through the robot, automatic dust removal and automatic conveying and the like.

The utility model provides a cooling structure, which belongs to the technical field of edge coupling standing wave accelerating tubes, and comprises a sleeve, a first flange plate structure and a second flange plate structure, and the first flange plate structure and the second flange plate structure are positioned at two ends of the sleeve. A pipe body is arranged in a space formed by the first flange plate structure, the second flange plate structure and the sleeve, the pipe body comprises a plurality of cavity disc sheets which are linearly arranged, and a plurality of fins are arranged on the two sides of each cavity disc sheet. The contact area with air or cooling liquid is greatly increased, according to the heat transfer principle, working heat of the accelerating tube is efficiently guided out, overheating of the accelerating tube is prevented, stable operation is guaranteed, meanwhile, the fins replace a traditional supporting assembly, the structure is simplified, the welding difficulty is reduced, and the maintenance cost and time are both reduced.

The present application relates to the technical fields of laser welding, in particular to a guardrail profile multi-angle splicing automatic welding device, which solves the problem that the guardrail profile needs to be welded manually by workers when it is installed outdoors, and the workers need to turn according to the welding position during the welding process. The guardrail profile multi-angle splicing automatic welding device comprises two symmetrical fixed seats, characterized in that: a movable surrounding welding assembly is arranged between the two fixed seats, the surrounding welding assembly comprises two symmetrical splicing ring seats, support end rods are fixed to the outer sides of the two ends of the two splicing ring seats, a rack mounting table is arranged on the outer surfaces of the two splicing ring seats, and a transmission rack is mounted on the surface of the rack mounting table. The present application can adjust the inclination angle and welding angle of the welding device according to the installation angle between the guardrail profile and the guardrail, so as to adapt to the welding work of the guardrail profile installed at different angles.

The application provides a high-strength easy-to-weld 700MPa steel plate and a manufacturing method and application thereof, and particularly relates to the technical field of steel manufacturing. The high-strength easy-to-weld 700MPa steel plate comprises the following chemical components in percentage by mass: C: 0.03%-0.06%, Si:<0.10%, Mn: 2.25%-2.40%, Nb: 0.075%-0.09%, Cr: 0.20%-0.24%, Ce: 0.01%-0.02%, V: 0.12%-0.13%, and the balance of Fe and inevitable impurities; wherein the thickness of the steel plate is 10mm-50mm. The steel plate provided by the application has excellent mechanical properties, the average transverse impact energy of the steel plate at 40 DEG C reaches 160J-350J, the yield strength is greater than or equal to 730MPa, the tensile strength is 800MPa-920MPa, and the elongation after fracture is greater than or equal to 17%.

The application discloses a brazing welding device, which comprises a welding seat, a pressing part and an induction heater. The copper terminal is placed on the welding seat; the pressing part comprises a first pressing part for pressing the copper terminal on the welding seat and a second pressing part for pressing the aluminum wire on the copper terminal; the induction heater generates heat by induction current, only the brazing filler metal is melted in the brazing process, and the brazing filler metal, the aluminum wire and the copper terminal are fully diffused to form a firm metallurgical bond. The brazing welding device disclosed by the application adopts induction welding instead of the traditional flame welding mode, the whole welding process is free of open fire, the risk of fire is reduced, meanwhile, the vision or skin of the operator is not damaged; meanwhile, only the brazing filler metal is melted in the induction welding process, the first welding part and the second welding part both remain in a solid state, and the welding difficulty is reduced; the induction welding has the advantages of fast heating speed and high efficiency, can shorten the welding time, improves the production efficiency and reduces the production cost.

The application provides a wire welding sleeve, a plurality of welding holes are arranged on the side wall of the welding sleeve, two barb areas are arranged on the inner wall of the welding sleeve on both sides of the welding holes, and the barbs of one barb area are oppositely arranged with the barbs of the other barb area. The application can improve the welding quality and welding strength of the wire to a certain extent and reduce the welding burrs.

This invention relates to the technical field of spherical head manufacturing equipment, specifically an L-shaped head assembly frame for segmented processing of spherical heads. The frame includes a base, a rotating disk, internal fixing components, spherical petal fixing components, and a swing support assembly. A rotating disk that rotates with the base is located at its center. The internal fixing components are positioned above the rotating disk, and multiple spherical petal fixing components are arranged around the rotating disk. The base, rotating disk, internal fixing components, and spherical petal fixing components swing simultaneously under the influence of the swing support assembly. This invention secures the spherical crown and spherical petals using the internal fixing components and spherical petal fixing components. The swing support assembly drives the spherical head to swing, and the position of the L-shaped swing arm can be adjusted via a motor for internal welding. The rotatable base and rotating disk allow the spherical head to rotate, changing its position and angle, facilitating welding for workers and reducing welding difficulty.

The utility model relates to battery technology field, specifically disclose a kind of standing immersion type battery pack, including battery box, support, battery module, immersion liquid and heat dissipation structure, battery box is equipped with a sealed cavity, immersion liquid is stationary in sealed cavity;Battery box has two opposite side walls along first direction, first channel extending along vertical direction is equipped between battery module and the inner wall surface of two side walls, and heat dissipation structure is arranged in the outer wall surface of one side wall;Battery module is fixed in sealed cavity by support and immersed in immersion liquid, support makes the above and below of battery module respectively with the second channel for immersion liquid extending along first direction, first channel is communicated with second channel, and first direction is perpendicular to vertical direction.The utility model raises battery module by support and dissipates heat by heat dissipation structure, can form the circulation of autonomous flow around battery module, cooling battery module is carried out through the circulation, effectively improve the heat dissipation effect of battery module.