Battery monomer, battery device and electric device

Abstract

The utility model discloses a battery monomer, a battery device and a power utilization device. The battery monomer comprises a conductive connecting piece, the conductive connecting piece comprises a conductor and a filling piece, and a groove is formed in one side of the conductor, so that a convex structure is formed on the other side of the conductor; the filling piece is arranged in the groove. Wherein the groove is provided with a mounting part, and the mounting part is matched with the filling piece so as to fix the filling piece. According to the structure, the electric conductor can improve the welding reliability with the pole by forming the bulge. Besides, after welding, the filling piece is assembled in the groove, so that the filling piece can cover the welding marks in the groove and can wrap and fix welding slag and other particles generated by welding, and the problem that the particles are diffused outwards and enter the battery monomer can be reduced. And on the other hand, the grooves can be filled by selecting the filling pieces with proper shapes and sizes, so that the problem that the single batteries are crushed is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cell, a battery device and an electrical device. Background Art

[0002] The battery device includes one or more battery cells, which usually include conductive connectors, which are used to connect the electrode assembly and the pole of the battery cell to transmit current. The conductive connector and the pole are usually connected together by welding, but the welding process easily leaves particles such as welding slag on the weld surface of the conductive connector. If the particles fall into the battery cell, it will affect the safety and service life of the battery device. Utility Model Content

[0003] In view of the above problems, the present application provides a battery cell, a battery device and an electrical device. The conductive connector of the battery cell includes a filling piece. After welding, the filling piece is assembled in the groove of the conductor, which can improve the safety and service life of the battery device.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is to provide a battery cell, wherein the battery cell includes a conductive connector, wherein the conductive connector includes a conductor and a filler, wherein a groove is formed on one side of the conductor, so that a convex structure is formed on the other side of the conductor;

[0005] The filling piece is arranged in the groove; wherein the groove is formed with a mounting portion, and the mounting portion cooperates with the filling piece to fix the filling piece.

[0006] In the above structure, the conductor can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler in the groove, the filler can cover the weld mark in the groove, can cover and fix the particles such as welding slag generated by welding, and can reduce the problem of particles diffusing outward into the battery cell. On the other hand, by selecting a filler of suitable shape and size to fill the groove, the problem of battery cells being crushed can be reduced.

[0007] In a possible implementation manner, the filling piece is provided with a first thread, and the inner wall of the groove is provided with a second thread matching with the first thread.

[0008] The filling piece can be assembled in the groove by means of threads, and the threaded method is simple to assemble and has high assembly reliability.

[0009] In a possible implementation manner, the filling piece is disposed in the groove via a clamping structure.

[0010] As mentioned above, the snap-fit ​​structure can be used to assemble the filling piece in the groove.

[0011] In a possible implementation manner, along a direction toward a groove bottom of the groove, sizes of the groove and the filling piece increase so that the filling piece can be clamped in the groove.

[0012] The filling piece of the above shape can be clamped and fixed in the groove.

[0013] In a possible implementation manner, the filling element includes an adhesive layer located on the outer layer.

[0014] As described above, the adhesive layer can adhere to the particles in the groove, further reducing the problem of the particles diffusing outward into the interior of the battery cell.

[0015] In a possible implementation manner, the filling member is a rubber member or a silicone member.

[0016] The rubber parts and silicone parts are insulating and elastic, which can improve the safety of the battery cells and play a role of slow-release protection.

[0017] In a possible implementation manner, the filling piece and the groove are both cylindrical.

[0018] The groove and the protrusion structure are cylindrical, which facilitates the connection between the protrusion structure and the pole. The filler and the groove are both cylindrical, and the filler can completely cover the groove to reduce the diffusion of particles outward.

[0019] In a possible implementation manner, the groove and the filling piece have the same shape and size.

[0020] As described above, the filling member can fully cover the groove, which can reduce the problem of particles diffusing outward into the interior of the battery cell.

[0021] In a possible implementation manner, the groove has a depth ranging from 2 mm to 6 mm.

[0022] The grooves of the above-mentioned size and the corresponding protruding structures have high welding reliability with the poles and are convenient for welding.

[0023] In a possible implementation manner, the groove has a depth ranging from 2 mm to 4 mm.

[0024] The above is a more optimal range of groove depth.

[0025] In a possible implementation manner, the conductor is a stamped conductor.

[0026] The stamped conductor has good surface quality and high strength.

[0027] In a possible embodiment, the battery cell also includes: a shell, the shell forming a accommodating space, the conductive connector is arranged on one side of the accommodating space; an electrode assembly, the electrode assembly is arranged in the accommodating space, a portion of the conductive connector extends into the accommodating space and is connected to the electrode assembly, and the protruding structure of the conductive connector is connected to the pole located outside the accommodating space.

[0028] As mentioned above, the conductive connector can conduct electricity between the electrode assembly of the battery cell and the pole.

[0029] In order to solve the above technical problem, another technical solution adopted by the present application is to provide a battery device, which includes the above battery cell.

[0030] In the battery device, the conductor can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler in the groove, the filler can cover the weld mark in the groove, can cover and fix the particles such as welding slag generated by the welding, and can reduce the diffusion of the particles outward. On the other hand, the groove can be filled with a filler of suitable shape and size to reduce the problem of battery cells being crushed.

[0031] In order to solve the above technical problem, another technical solution adopted by the present application is to provide an electrical device, which includes a battery device, and the battery device is the above-mentioned battery device, and the battery device is used to provide electrical energy.

[0032] In the above-mentioned electrical device, the conductor can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler in the groove, the filler can cover the weld mark in the groove, can cover and fix the particles such as welding slag generated by welding, and can reduce the diffusion of particles outward. On the other hand, by selecting a filler of suitable shape and size to fill the groove, the problem of battery cells being crushed can be reduced.

[0033] 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

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1is a schematic structural diagram of a vehicle according to one or more embodiments;

[0036] Figure 2 is a schematic diagram of an exploded structure of a conductive connector according to one or more embodiments;

[0037] Figure 3 A schematic diagram of a first-view structural explosion of a conductive connector according to one or more embodiments;

[0038] Figure 4 A schematic structural explosion diagram of a conductive connector according to one or more embodiments from a second perspective;

[0039] Figure 5 is a schematic structural diagram of an electrical conductor according to one or more embodiments;

[0040] Figure 6 is a schematic exploded view of a conductive connector according to one or more embodiments;

[0041] Figure 7 is a schematic exploded view of the structure of another conductive connector according to one or more embodiments;

[0042] Figure 8 is a schematic exploded view of the structure of another conductive connector according to one or more embodiments;

[0043] Fig. 9 is a schematic structural diagram of a battery cell according to one or more embodiments.

[0044] Among them, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 110, battery cell; 10, conductive connector; 11, conductor; 111, groove; 112, second thread; 113, protruding structure; 12, filling piece; 121, first thread; 122, first part; 123, second part. DETAILED DESCRIPTION

[0045] The following is a detailed description of the embodiments of the technical solution of the present application. 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.

[0046] 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.

[0047] 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, unless otherwise clearly and specifically defined, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two (including two), and "multiple pieces" refers to more than two (including two).

[0048] 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.

[0049] 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.

[0050] 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, which 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.

[0051] 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 those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0052] At present, from the perspective of market development, batteries are being used more and more widely. Batteries 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 battery application areas, the market demand is also constantly expanding.

[0053] The battery device includes one or more battery cells, which usually include conductive connectors, which are used to connect the electrode assembly and the pole of the battery cell to transmit current. The conductive connectors are usually connected to the pole by welding, but the welding process easily leaves particles such as welding slag on the weld surface of the conductive connector. If the particles fall into the battery cell, it will affect the safety and service life of the battery device.

[0054] Based on the above considerations, in order to solve the technical problem in the prior art that particles generated by welding easily fall into the interior of the battery cell, the present application proposes a battery cell, a battery device and an electrical device. The conductive connector of the battery cell includes a filling piece. After welding, the filling piece is assembled in the groove of the conductor, which can improve the safety and service life of the battery device.

[0055] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0056] Please refer to Figure 1 , Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0057] The vehicle 1000 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 battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0058] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0059] In order to improve the performance of the electric device, the present application provides a battery cell, a battery device and an electric device, please refer to Figure 2 , Figure 3 and Fig. 9 , Figure 2 is a schematic diagram of an exploded structure of a conductive connector according to one or more embodiments, Figure 3 is a schematic diagram of a first-view structural explosion of a conductive connector according to one or more embodiments, Fig. 9 is a schematic structural diagram of a battery cell according to one or more embodiments.

[0060] In some embodiments, the battery cell 110 includes a conductive connector 10, which includes a conductor 11 and a filler 12. A groove 111 is formed on one side of the conductor 11, so that a protruding structure 113 is formed on the other side of the conductor 11, and the filler 12 is disposed in the groove 111. The groove 111 is formed with a mounting portion (not shown), and the mounting portion cooperates with the filler 12 to fix the filler 12.

[0061] The conductive connector 10 is used to conduct the electrode assembly inside the shell of the battery cell 110 and the pole outside the shell, and it can be made of metal materials such as copper, aluminum, and nickel. The conductive connector 10 includes a conductor 11 and a filler 12, and the conductor 11 is a flow guide component of the conductive connector 10. In this embodiment, the conductor 11 is a sheet structure. In some other embodiments, the conductor 11 can also be a rod-shaped structure or a block structure. Among them, by forming a protruding structure 113 on the conductor 11, it is convenient to accurately align the conductor 11 during welding, and the reliability of the electrical connection can also be improved. Related art proposes a conductive connector 10. In the related art, the conductive connector 10 has a protruding structure 113. When the laser irradiates the protruding structure 113 for welding, a weld mark will be generated on the side of the groove 111 due to laser welding, and particles such as welding slag will remain in the groove 111. In the related art, after laser welding, glue is dispensed in the groove 111. After the glue is cured, the weld mark in the groove 111 is covered and the particles are fixed. The disadvantage of this method is that the shape and height of the glue in the high-temperature molten state cannot be controlled under the casting effect during glue dispensing. The size of the glue block may be too large after curing. The glue block with too large size may crush the battery cell 110 in the battery cell 110. At the same time, in the related art, the curing time of the glue in the high-temperature molten state is relatively long. During the curing process, the edge of the glue is prone to wire drawing and is easy to interfere with the top cover welding of the battery cell 110, causing the problem of welding explosion points. In this embodiment, a filler 12 is configured corresponding to the groove 111 on the conductor 11. The filler 12 has the same shape and size as the groove 111. The filler 12 can be assembled and fixed in the groove 111, so that it can cover the weld mark in the groove 111, and can also fix the particles in the groove 111, reducing the problem of particles falling into the battery cell 110. Among them, the groove 111 fixes the filler 12 by forming a mounting portion, and the mounting portion can specifically be a clamping structure formed by the groove 111, a thread or a set adhesive member.

[0062] In the above structure, the conductor 11 can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler 12 in the groove 111, the filler 12 can cover the weld mark in the groove 111, can cover and fix the particles such as welding slag generated by welding, and can reduce the problem of particles diffusing outward into the battery cell 110. On the other hand, by selecting a filler 12 of a suitable shape and size to fill the groove 111, the problem of the battery cell 110 being crushed can be reduced.

[0063] In some embodiments, the filling member 12 is a rubber member.

[0064] In this embodiment, the filler 12 is a rubber member. In other embodiments, the filler 12 may also be a silicone member. The rubber member and the silicone member are soft and elastic, and can more fully fill the groove 111 to cover the weld mark, and the rubber member and the silicone member can reduce the problem of crushing the conductor 11 and the battery cell 110. In addition, the rubber member and the silicone member are both insulating materials, which can not affect the conductivity of the conductor 11, and reduce circuit problems such as short circuits.

[0065] As mentioned above, the rubber member and the silicone member have insulation and elasticity, which can improve the safety of the battery cell 110 and play a role of slow-release protection.

[0066] In some embodiments, the groove 111 has the same shape and size as the filling member 12 .

[0067] The groove 111 and the filler 12 have the same shape and size, so that the filler 12 can completely cover the weld mark in the groove 111 and fix the particles generated during the welding process in the groove 111. In this embodiment, the groove 111 and the filler 12 are both cylindrical. In other embodiments, the groove 111 and the filler 12 can also be rectangular, irregular polygonal, etc.

[0068] As described above, the filling member 12 can fully cover the groove 111 , which can reduce the problem of particles diffusing outward into the interior of the battery cell 110 .

[0069] Please refer to Figure 4 and Figure 5 , Figure 4 is a schematic structural explosion diagram of a conductive connector from a second perspective according to one or more embodiments, Figure 5 1 is a schematic diagram of a structure of a conductor according to one or more embodiments. In some embodiments, the filling member 12 is disposed in the groove 111 through a locking structure.

[0070] In this embodiment, the filling member 12 and the groove 111 are cylindrical, and the mounting portion in the groove 111 is specifically a thread. The filling member 12 is provided with a first thread 121, and the groove 111 is provided with a second thread 112 that cooperates with the first thread 121, so that the filling member 12 can be fixed in the groove 111 through the thread structure. This fixing method has high fixing reliability and can effectively fix the particles in the groove 111 for a long time, and the problem of the filling member 12 falling off is not easy to occur. In some other embodiments, the clamping structure can also be a clamping protrusion and a clamping groove. One of the clamping protrusion and the clamping groove is set on the filling member 12, and the other of the clamping protrusion and the clamping groove is set in the groove 111, and the filling member 12 can also be fixed in the groove 111 through the clamping structure. In some other embodiments, the filling member 12 can also be fixed in the groove 111 by interference. In addition, the filling member 12 can also be fixed in the groove 111 by non-clamping methods such as bonding and magnetic attraction.

[0071] As mentioned above, the filling member 12 can be assembled in the groove 111 by means of threads, and the threaded assembly is simple and has high assembly reliability.

[0072] In some embodiments, along a direction toward the bottom of the groove 111 , the sizes of the groove 111 and the filling piece 12 increase so that the filling piece 12 is clamped in the groove 111 .

[0073] Different from the previous embodiment, the filling member 12 and the groove 111 may not be cylindrical. When the filling member 12 and the groove 111 are non-cylindrical, the filling member 12 may be fixed in other ways. For example, along the direction toward the bottom of the groove 111, the size of the groove 111 and the filling member 12 increases, that is, the size of the filling member 12 on the side close to the bottom of the groove is larger than the size on the side of the groove opening, so that the filling member 12 can be fixed in the groove 111 after being deformed and inserted into the groove 111. Please refer to Figure 6 , Figure 6 Schematic diagram of an exploded structure of a conductive connector according to one or more embodiments. In some embodiments, the mounting portion in the groove 111 is a clamping structure formed by the change in the size of the groove 111 along the bottom direction of the groove. The filler 12 includes a first portion 122 and a second portion 123 connected along the axial direction of the groove 111, and the size of the first portion 122 is larger than the second portion 123, wherein the shape of the first portion 122 and the second portion 123 can be a rectangular body, a cylinder, an irregular polygon, etc. The shape of the groove 111 is the same as that of the filler 12. The filler 12 is inserted into the groove 111 inwardly by the first portion 122, and the filler 12 can be clamped in the groove 111 by the first portion 122 with a larger size. Please refer to Figure 7 , Figure 7 FIG. 1 is an exploded view of another conductive connector according to one or more embodiments. In some other embodiments, the filler 12 and the groove 111 may also be in a truncated cone shape, and the size of the groove 111 and the filler 12 gradually increases in the direction toward the bottom of the groove 111. Figure 8 , Figure 8 FIG. 1 is a schematic diagram of an exploded structure of another conductive connector according to one or more embodiments. In some other embodiments, the filling member 12 and the groove 111 may also be in a gourd shape, and the gourd-shaped filling member may also be fixed in the groove 111 .

[0074] The filling member of the above-mentioned shape can be fixed in the groove 111 .

[0075] In some embodiments, the filling member 12 includes an adhesive layer (not shown) located on the outer layer, and the filling member 12 is in contact with the bottom of the groove 111 through the adhesive layer.

[0076] In this embodiment, the adhesive layer is located on one side of the filling member 12. After the filling member 12 is assembled in the groove 111, the filling member 12 contacts the bottom of the groove 111 through the adhesive layer. The adhesive layer can adhere to the particles in the groove 111, fix the particles generated during the welding process, and further reduce the outward diffusion of the particles. In addition, the filling member 12 is bonded to the bottom of the groove 111 through the adhesive layer. The adhesive layer can also play a role in fixing the filling member 12, which can reduce the problem of particles diffusing out after the filling member 12 falls off. In some other embodiments, the adhesive layer can also be located on multiple sides of the filling member 12, so that the filling member 12 is also bonded to the groove wall of the groove 111.

[0077] As described above, the adhesive layer can adhere to the particles in the groove 111 , further reducing the problem of the particles diffusing outward into the interior of the battery cell 110 .

[0078] In some embodiments, the groove 111 has a depth ranging from 2 mm to 6 mm.

[0079] In this embodiment, the groove depth of the groove 111 and the height of the filling member 12 are both 5 mm. In some other embodiments, the groove depth of the groove 111 and the height of the filling member 12 can also be 2 mm, 3 mm, 6 mm, etc. In some other preferred embodiments, the groove depth of the groove 111 ranges from 2 mm to 4 mm. For example, the groove depth of the groove 111 and the height of the filling member 12 can be 2 mm, 3 mm, 3.5 mm, 4 mm, etc.

[0080] The groove 111 of the above-mentioned size and the corresponding protruding structure 113 , the protruding structure 113 and the pole are welded with high reliability and conveniently.

[0081] In some embodiments, the conductor 11 is a stamped conductor 11 .

[0082] The stamped conductor 11 is a conductor 11 made by applying external force to a plate to deform the plate, which has the advantages of high manufacturing precision, good surface quality and high strength. In other embodiments, the conductor 11 can also be made by die casting, welding and the like.

[0083] As described above, the stamped conductor 11 has good surface quality and high strength.

[0084] In some embodiments, the battery cell 110 further includes a housing (not shown) and an electrode assembly (not shown), the housing forms a receiving space, and the conductive connector 10 is disposed on one side of the receiving space. The electrode assembly is disposed in the receiving space, a portion of the conductive connector 10 extends into the receiving space and is connected to the electrode assembly, and the protruding structure 113 of the conductive connector 10 is connected to the pole located outside the receiving space.

[0085] The housing space formed by the shell is used to accommodate the electrode assembly and the electrolyte to provide a closed and insulated environment and also play a protective role. The shell is made of copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. The number of electrode assemblies in the shell can be one or more, wherein the electrode assembly is mainly formed by winding or stacking the pole sheets, the pole sheets are divided into positive pole sheets and negative pole sheets, and a diaphragm is usually provided between the positive pole sheets and the negative pole sheets. The parts of the positive pole sheets and the negative pole sheets with active substances constitute the electrode body, and the parts of the positive pole sheets and the negative pole sheets without active substances each constitute the pole ears. In this embodiment, the conductive connector 10 includes a protruding structure 113 located outside the shell, the protruding structure 113 is welded to the pole column outside the housing space, and the two sides of the conductive connector 10 penetrate into the housing space and are connected to the pole ears of the electrode assembly. In addition, in this embodiment, the shell is in the shape of a rectangular body. In some other embodiments, the shell can also be in the shape of a cylindrical or other reasonable polygonal shape.

[0086] As described above, the conductive connector 10 can conduct electricity between the electrode assembly of the battery cell 110 and the electrode post.

[0087] Correspondingly, the present application also provides a battery device 100. The battery device 100 includes the above-mentioned battery cell 110.

[0088] In the battery device 100, the conductor 11 can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler 12 in the groove 111, the filler 12 can cover the weld mark in the groove 111, can cover and fix the particles such as welding slag generated by welding, and can reduce the diffusion of particles outward. On the other hand, the groove 111 can be filled with a filler 12 of a suitable shape and size, reducing the problem of the battery cell 110 being crushed.

[0089] Correspondingly, the present application also proposes an electrical device, which includes a battery device 100. The battery device 100 is the battery device 100 of any of the above embodiments, and the battery device 100 is used to provide electrical energy.

[0090] In the above-mentioned electrical device, the conductor 11 can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler 12 in the groove 111, the filler 12 can cover the weld mark in the groove 111, can cover and fix the particles such as welding slag generated by welding, and can reduce the diffusion of particles outward. On the other hand, by selecting a filler 12 of a suitable shape and size to fill the groove 111, the problem of the battery cell 110 being crushed can be reduced.

[0091] Finally, in a specific application scenario, when welding the conductive connector 10 of the existing battery device 100, it is easy for particles to fall into the battery cell 110. The battery cell 110 of the present application includes a conductive connector 10, and the conductive connector 10 includes a conductor 11 and a filler 12. The conductor 11 has a protruding structure 113 located on one side and a groove 111 located on the other side of the conductor 11; the filler 12 is arranged in the groove 111. Among them, the groove 111 is formed with a mounting portion, and the mounting portion cooperates with the filler 12 to fix the filler 12. The filler 12 is a rubber part or a silicone part. The filler 12 is arranged in the groove 111 through a clamping structure. The filler 12 and the groove 111 are both cylindrical. A first thread 121 is provided on the filler 12, and a second thread 112 cooperating with the first thread 121 is provided on the inner wall of the groove 111. The filler 12 includes an adhesive layer located on the outer layer, and the filler 12 contacts the bottom of the groove 111 through the adhesive layer. The groove depth of the groove 111 and the height of the filler 12 are 5 mm. The battery cell 110 also includes: a shell, the shell forms a receiving space, and the conductive connector 10 is arranged on one side of the receiving space; an electrode assembly, the electrode assembly is arranged in the receiving space, a part of the conductive connector 10 extends into the receiving space and is connected to the electrode assembly, and the protruding structure 113 of the conductive connector 10 is connected to the pole located outside the receiving space.

[0092] In the above manner, the conductor 11 can improve the reliability of welding with the pole by forming a protrusion. In addition, after welding, by assembling the filler 12 in the groove 111, the filler 12 can cover the weld mark in the groove 111, can cover and fix the particles such as welding slag generated by welding, and can reduce the diffusion of particles outward. On the other hand, by selecting a filler 12 of a suitable shape and size to fill the groove 111, the problem of the battery cell 110 being crushed can be reduced.

[0093] 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 battery cell, characterized in that: The battery cell includes a conductive connector, and the conductive connector includes: A conductor, wherein a groove is formed on one side of the conductor, so that a convex structure is formed on the other side of the conductor; a filling piece, the filling piece being arranged in the groove; Wherein, the groove is formed with a mounting portion, and the mounting portion cooperates with the filling piece to fix the filling piece.

2. The battery cell according to claim 1, characterized in that: The filling piece is provided with a first thread, and the inner wall of the groove is provided with a second thread matching the first thread.

3. The battery cell according to claim 1, characterized in that: The filling piece is arranged in the groove through a clamping structure.

4. The battery cell according to claim 3, characterized in that: Along the direction toward the bottom of the groove, the sizes of the groove and the filling piece increase so as to clamp the filling piece in the groove.

5. The battery cell according to claim 1, characterized in that: The filling member includes an adhesive layer located on the outer layer.

6. The battery cell according to claim 1, characterized in that: The filling piece is a rubber piece or a silicone piece.

7. The battery cell according to claim 2, characterized in that: The filling piece and the groove are both cylindrical.

8. The battery cell according to claim 1, characterized in that: The groove has the same shape and size as the filling piece.

9. The battery cell according to claim 8, characterized in that: The groove depth of the groove ranges from 2 mm to 6 mm.

10. The battery cell according to claim 9, characterized in that: The groove depth of the groove ranges from 2 mm to 4 mm.

11. The battery cell according to claim 1, characterized in that: The conductor is a stamped conductor.

12. The battery cell according to claim 1, characterized in that: The battery cell further comprises: A housing, wherein the housing is formed with a receiving space, and the conductive connecting member is arranged at one side of the receiving space; The electrode assembly is arranged in the accommodating space, part of the conductive connecting member extends into the accommodating space and is connected to the electrode assembly, and the protruding structure of the conductive connecting member is connected to the pole located outside the accommodating space.

13. A battery device, characterized in that: The battery device comprises the battery cell according to any one of claims 1 to 12.

14. An electrical device, characterized in that: The electrical device comprises the battery device according to claim 13, and the battery device is used to provide electrical energy.

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