Hot melting device, welding equipment and battery production line

Abstract

The utility model discloses a hot melting device, welding equipment and a battery production line, the hot melting device comprises a fixing assembly, a supporting piece and a hot melting piece, the fixing assembly is at least used for being connected with a main body of the welding equipment, the supporting piece comprises a supporting part and a connecting part, the connecting part is detachably installed on the fixing assembly, the supporting part comprises a supporting surface, and the supporting surface is provided with a plurality of through holes; the hot melting piece comprises a welding section and two connecting sections, the two connecting sections are connected to the two opposite ends of the welding section respectively, each connecting section is detachably installed on the fixing assembly, and at least part of the welding section abuts against the supporting face. When the hot melting device is used, the fixing assembly is connected with welding equipment, the hot melting piece is electrified to heat and is used for welding an insulating film of the battery monomer, and when the supporting piece or the hot melting piece is worn and needs to be replaced, the worn part is independently disassembled and replaced, so that the replacement convenience is improved, and the replacement efficiency is also improved; damaged parts are locally replaced, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a hot melt device, welding equipment and a battery production line. Background Art

[0002] With the development of new energy, more and more fields are using new energy as a power source. Due to its advantages such as high energy density, rechargeable, safe and environmentally friendly, battery devices are widely used in new energy vehicles, consumer electronics, energy storage systems and other fields.

[0003] The battery device includes a battery cell, and the battery cell includes a shell and an electrode assembly disposed inside the shell. The electrode assembly needs to be wrapped with an insulating film before being placed in the shell to insulate the electrode assembly from the shell. In order to reduce the loosening or shedding of the insulating film, in the related art, the insulating film and the shell are connected by hot-melting using welding equipment. However, the hot-melting device of the welding equipment is prone to wear during use, and it is time-consuming, labor-intensive, and costly to replace the hot-melting device. Utility Model Content

[0004] In view of the above problems, the present application provides a hot melt device, welding equipment and battery production line, which solve the problem of time-consuming, labor-intensive and high cost when replacing the hot melt device.

[0005] The first aspect of the present application provides a hot melt device, the hot melt device comprising:

[0006] A fixing assembly, the fixing assembly being at least used to be connected to a main body of the welding device;

[0007] A support member, the support member includes a support portion and a connecting portion, the connecting portion is detachably mounted on the fixing assembly, and the support portion includes a supporting surface;

[0008] The hot melt component includes a welding section and two connecting sections, the two connecting sections are respectively connected to the opposite ends of the welding section, each connecting section is detachably mounted on the fixed component and is used to be electrically connected to the power supply of the welding equipment, and the welding section is against the supporting surface.

[0009] Specifically, when the hot melt device is in use, the fixing component is connected to the welding equipment, the hot melt component is energized to generate heat and weld the insulating film of the battery cell. When the support part or the hot melt component needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0010] In some embodiments of the present application, the fixing assembly includes:

[0011] A connecting seat, the connecting seat is used to connect with the welding equipment, and the connecting part is detachably mounted on the connecting seat;

[0012] Two conductive seats are respectively installed on the connecting seat in a detachable manner, each connecting section is detachably connected to a conductive seat, and the conductive seat is used to electrically connect the hot melt component with the welding equipment.

[0013] Specifically, the conductive seat and the connecting seat are arranged to be detachably connected, so that the conductive seat can be replaced separately, thereby improving the convenience of replacement and the efficiency of replacement.

[0014] In some embodiments of the present application, the fixing assembly further includes a clamping piece, and each conductive seat is detachably connected to a clamping piece, and at least a portion of the connecting section is clamped between the clamping piece and the conductive seat.

[0015] Such an arrangement can improve the connection strength between the hot melt component and the fixing assembly, thereby reducing the situation where the hot melt component becomes loose and causes the welding effect to deteriorate.

[0016] In some embodiments of the present application, a through slot is provided on a side of the conductive base facing the clamping member, at least a portion of the connecting section is embedded in the through slot, and the clamping member abuts against a side of the connecting section away from the through slot.

[0017] Such an arrangement facilitates the positioning of the hot melt component during assembly and can improve the assembly accuracy of the hot melt component.

[0018] In some embodiments of the present application, along the first direction, the size of the connecting section is smaller than the size of the through groove, a protrusion structure is provided on the side of the clamping member facing the conductive seat, and along the first direction, at least part of the protrusion structure is embedded in the through groove and abuts against the connecting section, and the arrangement direction of the conductive seat and the clamping member is consistent with the first direction.

[0019] Such an arrangement can further improve the fixing strength of the hot melt component, so that the loosening of the hot melt component is further reduced, thereby improving the welding quality of the hot melt component.

[0020] In some embodiments of the present application, at least one of the pressing member and the conductive seat is a copper member.

[0021] With this arrangement, the copper parts have better mechanical properties and corrosion resistance, which can effectively extend the service life of the parts.

[0022] In some embodiments of the present application, a boss is provided on the support portion, the boss includes a support surface, along the second direction, the minimum dimension of the support surface is greater than or equal to the maximum dimension of the welding segment, the second direction is parallel to the support surface, and the arrangement direction of the connecting segment and the welding segment intersects with the second direction.

[0023] Such an arrangement can make the welding area of ​​the hot melt component match the welding position of the insulating film of the battery cell, thereby reducing the situation of over-welding caused by a large welding area.

[0024] In some embodiments of the present application, a mounting groove is provided on the connecting seat, a side wall of the mounting groove is an open structure, the open structure is connected to the groove of the mounting groove, at least part of the connecting part is detachably installed in the mounting groove, and the supporting part is arranged on the outside of the open structure.

[0025] Such an arrangement makes the structure compact after the connection between the connecting seat and the supporting member, and can effectively reduce the overall volume of the hot melt device.

[0026] In some embodiments of the present application, the connecting portion is arranged flush with the notch of the installation slot, so that the structure can be made flatter.

[0027] In some embodiments of the present application, the mounting groove includes a plurality of corners in the circumferential direction, and at least some of the corners include avoidance structures, and the avoidance structures are spaced apart from the connecting portion. Such a configuration can reduce the occurrence of scratches at the corners during assembly.

[0028] In some embodiments of the present application, the hot melt component is an alloy component. This arrangement can extend the service life of the hot melt component.

[0029] In some embodiments of the present application, at least the end surface of the welding section facing away from the supporting surface is provided with a wear-resistant layer, which can further extend the service life of the hot melt component.

[0030] In some embodiments of the present application, an anti-sticking layer is provided on the side of the wear-resistant layer facing away from the welding section. Such a configuration can reduce problems such as over-welding and hot-melt wire drawing generated during the welding process.

[0031] In some embodiments of the present application, the alloy piece is a nickel-chromium alloy piece or a molybdenum alloy piece. Such a configuration can make the hot melt piece have good structural strength, corrosion resistance and temperature resistance, thereby effectively extending the service life of the hot melt piece.

[0032] In some embodiments of the present application, the wear-resistant layer is a siloxane nano-coating, a fluorocarbon nano-coating or a metal nano-coating. Such a configuration can make the hot melt component have good wear resistance, thereby effectively extending the service life of the hot melt component.

[0033] In some embodiments of the present application, the anti-sticking layer is a Teflon material layer or a polyimide material layer. Such a configuration can further reduce problems such as over-welding and hot-melt wire drawing generated during welding.

[0034] In some embodiments of the present application, the support member is a synthetic stone material member or a ceramic material member. Such a configuration can make the support member have good structural strength, corrosion resistance and temperature resistance, thereby effectively extending the service life of the support member.

[0035] A second aspect of the present application provides a welding device, which includes a main body and a hot melt device as described above, wherein a fixing component is at least connected to the main body.

[0036] Specifically, the fixed component of the hot melt device is connected to the welding equipment. The hot melt component is energized to generate heat and weld the insulating film of the battery cell. When the support part or the hot melt component needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0037] A third aspect of the present application provides a battery production line, which includes the welding device as described above.

[0038] Specifically, in the welding equipment, the fixed component of the hot melt device is connected to the welding equipment. The hot melt component is energized to generate heat and weld the insulating film of the battery cell. When the support part or the hot melt component needs to be worn and replaced, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0039] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the structure of a welding device according to an embodiment of the present application is shown;

[0041] Figure 2 Based on Figure 1 A schematic diagram of the structure of a hot melt device of a welding device shown in ;

[0042] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the hot melt device shown in ;

[0043] Figure 4 for Figure 3 A schematic diagram of the structure of the connecting seat of the hot melt device shown in FIG.

[0044] Figure 5 for Figure 3 A schematic structural diagram of a support member of a hot melt device shown in FIG.

[0045] Figure 6 for Figure 3 A schematic structural diagram of a hot melt component of a hot melt device shown in FIG.

[0046] Figure 7 for Figure 3 A schematic diagram of the structure of the conductive seat of the hot melt device shown in FIG.

[0047] Figure 8 for Figure 3 Schematic diagram of the structure of the pressing part of the hot melt device shown in.

[0048] The reference numerals are as follows:

[0049] 100. Welding equipment; 200. Battery cells;

[0050] 10. Hot melt device;

[0051] 11. Supporting parts;

[0052] 111, supporting portion; 1111, abutting surface; 112, connecting portion; 113, boss; 1131, supporting surface; 114, countersunk hole;

[0053] 12. Hot melt parts;

[0054] 121, welding section; 122, connecting section; 123, through hole;

[0055] 13. Fixing components;

[0056] 131, connecting seat; 1311, connecting head; 1312, seat body; 1313, mounting groove; 1314, avoidance structure; 1315, first hole; 1316, second hole; 1317, third hole; 132, conductive seat; 1321, through groove; 1322, first connecting hole; 1323, second connecting hole; 1324, third connecting hole; 133, pressing piece; 1331, protruding structure; 1332, mounting hole;

[0057] 20. Subject;

[0058] X, first direction; Y, second direction; a, first size; b, second size. DETAILED DESCRIPTION

[0059] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0061] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0062] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0063] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0064] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0065] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0068] The battery device includes a battery cell, and the battery cell includes a shell and an electrode assembly disposed inside the shell. The electrode assembly needs to be wrapped with an insulating film before being placed in the shell to insulate the electrode assembly from the shell. In the related art, the insulating film and the shell are connected by hot-melting using welding equipment. However, the hot-melting device of the welding equipment is prone to wear during use, and it is time-consuming, labor-intensive, and costly to replace the hot-melting device.

[0069] In order to solve the above problems, in the present application, the hot melt device includes a fixing component, a support member and a hot melt member, the fixing component is at least used to connect with the main body of the welding equipment, the support member includes a support portion and a connecting portion, the connecting portion is detachably mounted on the fixing component, the support portion includes a supporting surface, the hot melt member includes a welding section and two connecting sections, the two connecting sections are respectively connected to the opposite ends of the welding section, each connecting section is detachably mounted on the fixing component and is used to be electrically connected to the power supply of the welding equipment, and the welding section is against the supporting surface. When the hot melt device is in use, the fixing component is connected to the welding equipment, the hot melt member is powered on to generate heat and welds the insulating film of the battery cell, and when the support member or the hot melt member needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, which improves the convenience and efficiency of replacement, and partially replaces the damaged parts, reducing production costs.

[0070] The technical solutions described in the embodiments of the present application are not limited to the devices described above, but can also be applied to all devices using battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0071] For example, the vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor, a controller and a battery device may be arranged inside the vehicle, and the controller is used to control the battery device to power the motor. For example, a battery device may be arranged at the bottom, front or rear of the vehicle. The battery device may be used to power the vehicle, for example, the battery device may be used as an operating power source for the vehicle, for the circuit system of the vehicle, for example, for the working power requirements during the start-up, navigation and operation of the vehicle. In another embodiment of the present application, the battery device may not only be used as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0072] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0073] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0074] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0075] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0076] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0077] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0078] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0079] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0080] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0081] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0082] In some embodiments of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0083] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0084] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0085] like Figures 1 to 8 As shown, in some embodiments of the present application, a hot melt device 10 is proposed, which includes a fixing component 13, a support member 11 and a hot melt member 12. The fixing component 13 is at least used to connect with the main body 20 of the welding device 100. The support member 11 includes a supporting portion 111 and a connecting portion 112. The connecting portion 112 is detachably mounted on the fixing component 13. The supporting portion 111 includes a supporting surface 1131. The hot melt member 12 includes a welding section 121 and two connecting sections 122. The two connecting sections 122 are respectively connected to opposite ends of the welding section 121. Each connecting section 122 is detachably mounted on the fixing component 13 and is used to be electrically connected to the power supply of the welding device 100. The welding section 121 rests on the supporting surface 1131.

[0086] Specifically, the hot melt member 12 and the support member 11 are respectively fixed on the fixing assembly 13, and the support member 11 supports the hot melt member 12, wherein the welding section 121 of the hot melt member 12 abuts against the supporting surface 1131 of the fixing assembly 13. When welding the insulating film of the battery cell 200, the hot melt member 12 is energized to generate heat, and the welding section 121 abuts against the insulating film and welds the insulating film to fix it.

[0087] Among them, in the hot melt part 12, the welding section 121 is connected between the two connecting sections 122, and each connecting section 122 is respectively connected to the fixing component 13. After the two connecting sections 122 are fixed, the welding section 121 is tensioned and rests on the supporting surface 1131. When the insulating film is welded, the side of the welding section 121 facing away from the supporting surface 1131 is used to weld the insulating film.

[0088] In addition, the connecting section 122 is symmetrically arranged on opposite sides of the welding section 121. The connecting section 122 and the welding section 121 can be located in the same plane or arranged at an angle. Among them, the welding section 121 is a flat plate structure, and the connecting section 122 can be a flat plate structure or a bent plate structure.

[0089] When the hot melt device 10 is in use, the fixing component 13 is connected to the welding equipment 100, the hot melt part 12 is energized to generate heat and weld the insulating film of the battery cell 200. When the support part 11 or the hot melt part 12 needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0090] In some embodiments of the present application, Figure 2 and Figure 3 As shown, the fixing assembly 13 includes a connecting seat 131 and two conductive seats 132. The connecting seat 131 is used to connect to the welding equipment 100. The connecting part 112 is detachably mounted on the connecting seat 131. The two conductive seats 132 are respectively detachably mounted on the connecting seat 131. Each connecting section 122 is detachably connected to a conductive seat 132. The conductive seat 132 is used to electrically connect the hot melt 12 to the welding equipment 100.

[0091] Specifically, the fixing assembly 13 includes a conductive seat 132 and a connecting seat 131. There are two conductive seats 132. Each conductive seat 132 is installed on the connecting seat 131 and can be detached relative to the connecting seat 131. Each connecting section 122 of the hot melt part 12 is connected to a conductive seat 132 and can be detached relative to the conductive seat 132.

[0092] When the hot melt device 10 is installed on the welding device 100, the connection seat 131 of the fixing assembly 13 is connected to the welding device 100 and can be detached relative to the welding device 100, and the conductive seat 132 is electrically connected to the power supply of the welding device 100. When welding, the power supply of the welding device 100 energizes the hot melt member 12 through the conductive seat 132, and the hot melt member 12 after being energized generates heat and is used to weld the insulating film of the battery cell 200.

[0093] The connection base 131 and the welding device 100 are configured to be a detachable structure, and the hot melt device 10 can be completely disassembled by separating the connection base 131 and the welding device 100, so that the hot melt device 10 can be completely replaced.

[0094] The conductive seat 132 and the connecting seat 131 are arranged to be detachably connected, so that the conductive seat 132 can be replaced separately, thereby improving the convenience of replacement and the efficiency of replacement.

[0095] It should be pointed out that if Figures 2 to 4 As shown, the connection seat 131 includes a connection head 1311 and a seat body 1312, the connection head 1311 is fixedly connected to the seat body 1312 (the connection method includes but is not limited to welding, bonding or integral molding), the support member 11 is connected to the seat body 1312, the connection head 1311 is used to connect to the welding device 100, and the connection method includes but is not limited to clamping or connection via a connector, etc. In the present application, a first hole 1315 (at least one) is provided on the connection head 1311, and when the connection seat 131 is connected to the welding device 100, the connection head 1311 is set at the installation position of the welding device 100, and a connection member such as a bolt is used to pass through the first hole 1315 and connect to the installation position.

[0096] In addition, the connection method between the connection part 112 of the support member 11 and the connection seat 131 includes but is not limited to clamping or connection via a connection member. In the present application, a second hole 1316 (at least one) is provided on the connection seat 131, and a countersunk hole 114 is provided on the connection part 112. During assembly, the connection part 112 is abutted against the connection seat 131 and the countersunk hole 114 is coaxially arranged with the second hole 1316. A countersunk screw is passed through the countersunk hole 114 and then threadedly connected with the second hole 1316, so that the connection part 112 and the connection seat 131 are fixed to each other.

[0097] In some embodiments of the present application, Figure 2 , Figure 3 and Figure 8 As shown, the fixing assembly 13 further includes a pressing member 133 , and each conductive seat 132 is detachably connected to a pressing member 133 , and at least a portion of the connecting section 122 is clamped between the pressing member 133 and the conductive seat 132 .

[0098] During assembly, the conductive seat 132 is first fixed on the connecting seat 131, and then the connecting section 122 of the hot melt 12 is connected to the conductive seat 132, so that the welding section 121 of the hot melt 12 abuts against the supporting surface 1131 of the supporting member 11, and then the pressing member 133 is connected to the conductive seat 132, so that at least part of the connecting section 122 is clamped between the conductive seat 132 and the pressing member 133. When the connecting section 122 is clamped between the conductive seat 132 and the clamping member, the conductive seat 132 and the clamping member can apply pressure to the connecting section 122 from opposite sides of the connecting section 122.

[0099] A clamping piece is provided, and part of the connecting piece is clamped between the pressing piece 133 and the conductive seat 132. The increased area of ​​the connecting section 122 being fixed can improve the connection strength between the hot melt piece 12 and the fixing assembly 13, thereby reducing the situation where the hot melt piece 12 becomes loose and causes the welding effect to deteriorate.

[0100] It should be pointed out that in the present application, the supporting portion 111 of the supporting member 11 includes a resting surface 1111, and the resting surface 1111 is set at an obtuse angle to the supporting surface 1131. A part of the connecting section 122 rests on the resting surface 1111, and another part of the connecting section 122 cooperates with the conductive seat 132. By setting the resting surface 1111, the supporting performance of the hot melt component 12 is improved, the loosening of the hot melt component 12 is reduced, and the welding effect can be improved.

[0101] In some embodiments of the present application, Figure 2 , Figure 3 and Figure 7 As shown, a through slot 1321 is provided on one side of the conductive base 132 facing the pressing member 133 , at least a portion of the connecting section 122 is embedded in the through slot 1321 , and the pressing member 133 abuts against a side of the connecting section 122 away from the through slot 1321 .

[0102] Specifically, the through groove 1321 is opened on the side of the conductive seat 132 away from the connecting seat 131, and the through groove 1321 has a depth and a length. A connecting section 122 of the hot melt 12 is embedded in the through groove 1321 along the thickness direction of the through groove 1321, and part of the connecting section 122 extends to the outside of the through groove 1321 through the port in the length direction of the through groove 1321. The through groove 1321 includes a bottom wall and a side wall, and the connecting section 122 is respectively abutted against the bottom wall and the side wall. The bottom wall and the side wall are used to limit the connecting section 122, so that the position accuracy of the connecting section 122 in the channel is improved, which is convenient for positioning when the hot melt 12 is assembled, and can improve the assembly accuracy of the hot melt 12.

[0103] It should be noted that the connection method between the conductive seat 132 and the connecting seat 131 includes but is not limited to clamping or connection via a connecting piece. In the present application, a third hole 1317 (a plurality of holes) is provided on the connecting seat 131, and a first connecting hole 1322 is provided on the conductive seat 132, and the number of the first connecting holes 1322 is consistent with the number of the third holes 1317. During assembly, the conductive seat 132 is placed against the connecting seat 131, so that the mounting holes 1332 and the third holes 1317 are arranged one by one, and a connecting piece such as a screw is passed through the mounting hole 1332 and then threadedly connected to the third hole 1317.

[0104] In addition, the connection method between the connecting section 122 and the conductive seat 132 includes but is not limited to clamping or connection via a connecting piece. In the present application, a second connecting hole 1323 (at least one and opened on the bottom wall of the through slot 1321) is opened on the conductive seat 132, and a through hole 123 is opened on the connecting section 122, and the number of the through holes 123 is consistent with the number of the second connecting holes 1323. During assembly, the connecting section 122 is embedded in the through slot 1321, so that the second connecting hole 1323 is coaxially arranged with the through hole 123, and then a connecting piece such as a screw is passed through the through hole 123 and is threadedly connected to the second connecting hole 1323.

[0105] In addition, in the present application, a third connecting hole 1324 is opened on the conductive seat 132. When the hot melt device 10 is installed on the welding equipment 100, the third connecting hole 1324 is threadedly connected with a screw, and the power supply of the welding equipment 100 is electrically connected to the screw through a wire to electrically connect the power supply to the conductive seat 132.

[0106] In some embodiments of the present application, Figure 2 and Figure 3 As shown, along the first direction X, the size of the connecting section 122 is smaller than the size of the through groove 1321, and a protruding structure 1331 is provided on the side of the clamping member 133 facing the conductive seat 132. Along the first direction X, at least part of the protruding structure 1331 is embedded in the through groove 1321 and abuts against the connecting section 122, and the arrangement direction of the conductive seat 132 and the clamping member 133 is consistent with the first direction X.

[0107] Specifically, a notch is provided on the side of the through slot 1321 facing the clamping piece 133, the inner wall of the through slot 1321 opposite to the notch is the bottom wall of the through slot 1321, the direction from the notch to the bottom wall is the depth direction of the through slot 1321, and the first direction X, the depth direction of the through slot 1321, and the arrangement direction of the conductive seat 132 and the clamping piece 133 are consistent.

[0108] Along the first direction X, the size of the connecting section 122 is a first distance, and the size of the through groove 1321 is a second distance, wherein the second distance is greater than the first distance. When the clamping piece 133 is assembled on the conductive seat 132, at least part of the structure of the protruding structure 1331 of the clamping piece 133 is arranged in the through groove 1321 through the notch of the through groove 1321 and abuts against the connecting section 122. Such a configuration can further improve the fixing strength of the hot melt piece 12, so that the loosening of the hot melt piece 12 is further reduced, thereby improving the welding quality of the hot melt piece 12.

[0109] In some embodiments of the present application, at least one of the pressing member 133 and the conductive seat 132 is a copper member.

[0110] Specifically, at least one of the pressing member 133 and the conductive seat 132 is made of copper. In this way, the copper has better mechanical properties and corrosion resistance, which can effectively extend the service life of the components.

[0111] In the present application, the pressing member 133 and the conductive seat 132 are both copper parts, such as brass parts. Brass parts have excellent mechanical properties and corrosion resistance, and can effectively extend the service life of the components.

[0112] In some embodiments of the present application, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a boss 113 is provided on the support portion 111, and the boss 113 includes a support surface 1131. Along the second direction Y, the minimum dimension of the support surface 1131 is greater than or equal to the maximum dimension of the welding section 121, the second direction Y is parallel to the support surface 1131, and the arrangement direction of the connecting section 122 and the welding section 121 intersects with the second direction Y.

[0113] Specifically, along the second direction Y, the minimum dimension of the support surface 1131 is the first dimension a, and the maximum dimension of the welding section 121 is the second dimension b, wherein the first dimension a is greater than or equal to the second dimension b. In the second direction Y, setting the minimum dimension of the support surface 1131 to be greater than or equal to the maximum dimension of the welding section 121 can make the welding area of ​​the hot melt 12 fit the welding position of the insulating film of the battery cell 200, thereby reducing the situation of over-welding caused by a large welding area.

[0114] The boss 113 is protruded in a third direction relative to the support portion 111, and the third direction is perpendicular to the support surface 1131. The welding section 121 rests on the support surface 1131 of the boss 113, so that the welding section 121 is protruded relative to other structures, thereby enabling the welding section 121 to participate in the welding process, thereby reducing the adverse effects of other components such as the hot melt 12 on the welding process.

[0115] It should be understood that in the present application, along the second direction Y, the size of the support surface 1131 is the first size a, and the size of the welding section 121 is the second size b, wherein the second size b is equal to the first size a, and along the second direction Y, the opposite ends of the welding section 121 are flush with the edge of the support surface 1131.

[0116] In some embodiments of the present application, Figures 2 to 4 As shown, a mounting groove 1313 is provided on the connecting seat 131, and a side wall of the mounting groove 1313 is an open structure, the open structure is connected to the groove of the mounting groove 1313, at least part of the connecting part 112 is detachably installed in the mounting groove 1313, and the supporting part 111 is arranged on the outside of the open structure.

[0117] Specifically, at least a portion of the connecting portion 112 of the support member 11 is disposed in the mounting groove 1313 , so that after the connecting seat 131 and the support member 11 are connected, the structure is compact and the overall volume of the hot melt device 10 can be effectively reduced.

[0118] In some embodiments of the present application, Figure 2 As shown, the connection portion 112 is arranged flush with the notch of the installation slot 1313. Specifically, the connection portion 112 is arranged flush with the notch of the installation slot 1313, which can make the structure more flat.

[0119] In some embodiments of the present application, Figure 3 and Figure 4 As shown, the installation groove 1313 includes a plurality of corners in the circumferential direction, and at least some of the corners include avoidance structures 1314 , which are spaced apart from the connecting portion 112 .

[0120] Specifically, the part of the connecting portion 112 of the support member 11 installed in the installation groove 1313 includes multiple corners, each corner corresponds to a corner of the installation groove 1313, and by setting an avoidance structure 1314 at the corner of the installation groove 1313, the corner and the connecting portion 112 can be set at a distance, which can reduce the occurrence of scratches at the corner position during the assembly process.

[0121] In some embodiments of the present application, the hot melt component 12 is an alloy component. Specifically, the hot melt component 12 is set to be an alloy component, which has high structural strength and stable performance, and can extend the service life of the hot melt component 12.

[0122] In some embodiments of the present application, at least the end surface of the welding section 121 away from the support surface 1131 is provided with a wear-resistant layer. Specifically, providing the end surface of the welding section 121 away from the support surface 1131 with a wear-resistant layer can improve the wear resistance of the welding section 121 and further extend the service life of the hot melt 12.

[0123] In some embodiments of the present application, an anti-sticking layer is provided on the side of the wear-resistant layer away from the welding section 121. Specifically, the anti-sticking layer is provided on the side of the wear-resistant layer away from the welding section 121 to reduce problems such as over-welding and hot-melt wire drawing during welding.

[0124] In some embodiments of the present application, the alloy piece is a nickel-chromium alloy piece or a molybdenum alloy piece. Such a configuration can make the hot melt piece 12 have good structural strength, corrosion resistance and temperature resistance, thereby effectively extending the service life of the hot melt piece 12.

[0125] In some embodiments of the present application, the wear-resistant layer is a siloxane nano coating, a fluorocarbon nano coating or a metal nano coating. This configuration enables the hot melt component 12 to have good wear resistance, thereby effectively extending the service life of the hot melt component 12.

[0126] In some embodiments of the present application, the anti-sticking layer is a Teflon material layer or a polyimide material layer. Such a configuration can further reduce problems such as over-welding and hot-melt wire drawing generated during welding.

[0127] In some embodiments of the present application, the support member 11 is a synthetic stone material member or a ceramic material member. Such a configuration can make the support member 11 have good structural strength, corrosion resistance and temperature resistance, thereby effectively extending the service life of the support member 11.

[0128] like Figures 1 to 8 As shown, the second aspect of the present application proposes a welding device 100 , which includes a main body 20 and the hot melt device 10 as described above, and a fixing component 13 is at least connected to the main body 20 .

[0129] Specifically, the fixing component 13 of the hot melt device 10 is connected to the welding equipment 100, the hot melt component 12 is energized to generate heat and weld the insulating film of the battery cell 200. When the support member 11 or the hot melt component 12 needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0130] A third aspect of the present application provides a battery production line, which includes the welding device 100 as described above.

[0131] Specifically, in the welding equipment 100, the fixing component 13 of the hot melt device 10 is connected to the welding equipment 100, the hot melt component 12 is energized to generate heat and weld the insulating film of the battery cell 200. When the support member 11 or the hot melt component 12 needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0132] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0133] In the implementation mode of the present application, Figures 1 to 8 As shown, the present application proposes a hot melt device 10, which includes a fixing component 13, a support member 11 and a hot melt member 12. The fixing component 13 is at least used to connect with the main body 20 of the welding device 100. The support member 11 includes a supporting portion 111 and a connecting portion 112. The connecting portion 112 is detachably mounted on the fixing component 13. The supporting portion 111 includes a supporting surface 1131. The hot melt member 12 includes a welding section 121 and two connecting sections 122. The two connecting sections 122 are respectively connected to opposite ends of the welding section 121. Each connecting section 122 is detachably mounted on the fixing component 13 and is used to be electrically connected to the power supply of the welding device 100. The welding section 121 rests on the supporting surface 1131.

[0134] Furthermore, the fixing assembly 13 includes a connection seat 131, a pressing piece 133 and two conductive seats 132. The connection seat 131 is used to connect with the welding device 100. The connection portion 112 is detachably mounted on the connection seat 131. The two conductive seats 132 are detachably mounted on the connection seat 131. Each connection section 122 is detachably connected to a conductive seat 132. The conductive seats 132 are used to electrically connect the hot melt 12 with the welding device 100. A pressing piece 133 is detachably connected to each conductive seat 132. Part of the connection section 122 is sandwiched between the pressing piece 133 and the conductive seat 132. The pressing piece 133 and the conductive seat 132 are both brass parts.

[0135] Furthermore, a through slot 1321 is provided on one side of the conductive seat 132 facing the pressing member 133, at least a portion of the connecting section 122 is embedded in the through slot 1321, and the pressing member 133 abuts against a side of the connecting section 122 away from the through slot 1321. Along the first direction X, the size of the connecting section 122 is smaller than the size of the through slot 1321, and a protruding structure 1331 is provided on one side of the pressing member 133 facing the conductive seat 132, and along the first direction X, at least a portion of the protruding structure 1331 is embedded in the through slot 1321 and abuts against the connecting section 122, and the first direction X is consistent with the arrangement direction of the conductive seat 132 and the pressing member 133.

[0136] Furthermore, a boss 113 is provided on the support portion 111, and the boss 113 includes a support surface 1131. Along the second direction Y, the minimum dimension of the support surface 1131 is greater than or equal to the maximum dimension of the welding section 121, the second direction Y is parallel to the support surface 1131, and the second direction Y is perpendicular to the arrangement direction of the connecting section 122 and the welding section 121.

[0137] Furthermore, the connection seat 131 is provided with a mounting groove 1313, one side wall of the mounting groove 1313 is an open structure, the open structure is connected to the notch of the mounting groove 1313, part of the connection part 112 is detachably installed in the mounting groove 1313, and the support part 111 is arranged outside the open structure. The connection part 112 is arranged flush with the notch of the mounting groove 1313. The mounting groove 1313 includes a plurality of corners in the circumferential direction, and the corners include an avoidance structure 1314, and the avoidance structure 1314 is arranged at intervals from the connection part 112.

[0138] Furthermore, the hot melt component 12 is an alloy component, and the alloy component is a nickel-chromium alloy component or a molybdenum alloy component.

[0139] Furthermore, the end surface of the welding section 121 facing away from the supporting surface 1131 is provided with a wear-resistant layer, and the wear-resistant layer is a siloxane nano-coating, a fluorocarbon nano-coating or a metal nano-coating.

[0140] Furthermore, an anti-sticking layer is provided on the side of the wear-resistant layer facing away from the welding section 121 , and the anti-sticking layer is a Teflon material layer or a polyimide material layer.

[0141] Furthermore, the support member 11 is made of synthetic stone or ceramic material.

[0142] Specifically, when the hot melt device 10 is in use, the fixing component 13 is connected to the welding equipment 100, the hot melt component 12 is energized to generate heat and weld the insulating film of the battery cell 200. When the support member 11 or the hot melt component 12 needs to be replaced due to wear, the worn parts can be disassembled and replaced separately, thereby improving the convenience and efficiency of replacement. At the same time, partial replacement of damaged parts can effectively reduce production costs.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A hot melt device, characterized in that: The hot melt device comprises: A fixing assembly, the fixing assembly being at least used to be connected to a main body of the welding device; A support member, the support member comprising a support portion and a connecting portion, the connecting portion being detachably mounted on the fixing assembly, and the support portion comprising a supporting surface; A hot melt component, the hot melt component includes a welding section and two connecting sections, the two connecting sections are respectively connected to opposite ends of the welding section, each of the connecting sections is detachably mounted on the fixing assembly and is used to be electrically connected to a power source of the welding equipment, and the welding section rests against the supporting surface.

2. The hot melt device according to claim 1, characterized in that: The fixing assembly comprises: A connecting seat, the connecting seat is used to be connected to the welding equipment, and the connecting part is detachably mounted on the connecting seat; Two conductive seats, the two conductive seats are respectively installed on the connecting seat in a detachable manner, each connecting section is detachably connected to one of the conductive seats, and the conductive seat is used to electrically connect the hot melt component with the welding equipment.

3. The hot melt device according to claim 2, characterized in that: The fixing assembly further comprises a pressing piece, and each of the conductive seats is detachably connected to one of the pressing pieces, and at least a portion of the connecting section is clamped between the pressing piece and the conductive seat.

4. The hot melt device according to claim 3, characterized in that: A through slot is provided on a side of the conductive seat facing the pressing member, at least a portion of the connecting section is embedded in the through slot, and the pressing member abuts against a side of the connecting section away from the through slot.

5. The hot melt device according to claim 4, characterized in that: Along the first direction, the size of the connecting section is smaller than the size of the through groove, and a protruding structure is provided on the side of the clamping member facing the conductive seat. Along the first direction, at least part of the protruding structure is embedded in the through groove and abuts against the connecting section, and the arrangement direction of the conductive seat and the clamping member is consistent with the first direction.

6. The hot melt device according to claim 3, characterized in that: At least one of the pressing member and the conductive seat is a copper member.

7. The hot melt device according to claim 2, characterized in that: The support portion is provided with a boss, which includes the support surface. Along the second direction, the minimum dimension of the support surface is greater than or equal to the maximum dimension of the welding segment. The second direction is parallel to the support surface, and the arrangement direction of the connecting segment and the welding segment intersects with the second direction.

8. The hot melt device according to claim 2, characterized in that: The connecting seat is provided with a mounting groove, a side wall of the mounting groove is an open structure, the open structure is connected with the groove of the mounting groove, at least part of the connecting part is detachably installed in the mounting groove, and the supporting part is arranged on the outside of the open structure.

9. The hot melt device according to claim 8, characterized in that: The connecting portion is arranged flush with the notch of the mounting slot.

10. The hot melt device according to claim 8, characterized in that: The mounting groove includes a plurality of corners in the circumferential direction, and at least a portion of the corners include avoidance structures, and the avoidance structures are spaced apart from the connecting portion.

11. The hot melt device according to any one of claims 1 to 10, characterized in that: The hot melt part is an alloy part.

12. The hot melt device according to claim 11, characterized in that: At least the end surface of the welding section facing away from the supporting surface is provided with a wear-resistant layer.

13. The hot melt device according to claim 12, characterized in that: An anti-sticking layer is provided on the side of the wear-resistant layer facing away from the welding section.

14. The hot melt device according to claim 13, characterized in that: The alloy part is a nickel-chromium alloy part or a molybdenum alloy part; And / or, the wear-resistant layer is a siloxane nano-coating, a fluorocarbon nano-coating or a metal nano-coating; And / or, the anti-sticking layer is a Teflon material layer or a polyimide material layer.

15. The hot melt device according to any one of claims 1 to 10, characterized in that: The support member is made of synthetic stone or ceramic material.

16. A welding device, characterized in that: The welding equipment comprises a main body and a hot melt device according to any one of claims 1 to 15, and the fixing component is at least connected to the main body.

17. A battery production line, characterized in that: The battery production line comprises the welding apparatus according to claim 16.

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