Battery pressing block and welding clamp

Abstract

The utility model discloses a battery pressing block and a welding clamp, the battery pressing block comprises a main body block, a contact block and a locking piece, and an embedding groove is formed in the main body block; the contact surface, deviating from the bottom wall of the embedding groove, of the contact block protrudes out of the main body block, and the contact surface is used for being in contact with the battery; and the locking piece is inserted into the main body block and the contact block so as to fix the contact block and the main body block. The contact block is embedded in the embedding groove, the contact surface of the contact block protrudes out of the main body block, and the battery pressing block can be in contact with the battery through the contact surface, so that the risk of battery damage caused by direct contact between the main body block and the battery is reduced, and meanwhile, the locking piece is inserted into the main body block and the contact block, so that the stability of the contact block embedded in the embedding groove is improved; and more stable contact between the battery pressing block and the battery is facilitated. Compared with other types of battery pressing blocks, the battery pressing block has the advantages that quick-wear parts such as adhesive tapes and sheets do not need to be frequently replaced, the risk of battery damage is reduced, the production efficiency is higher, and the production cost is lower.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pressing block and a welding fixture. Background Art

[0002] Energy conservation and emission reduction are the key to sustainable development, which has promoted the adjustment of energy structure and the development and application of battery technology. The key to the development of battery technology lies in electrochemical energy storage technology, which has been widely used in portable electronics, electric vehicles and energy storage systems due to its high energy density, good cycle capacity, high operating voltage, environmental protection and low self-discharge.

[0003] During the manufacturing process, a welding fixture is required to weld and package the batteries. However, the way the battery pressing blocks in the existing welding fixtures fix the batteries is prone to damage the batteries, and the wearing parts on the battery pressing blocks that are used to contact the batteries, such as tapes and sheets, need to be replaced frequently, resulting in low production efficiency and high costs. Utility Model Content

[0004] The main purpose of this application is to provide a battery pressing block and a welding fixture, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] In order to solve the above problems, the present application provides a battery pressing block, which includes: a main body block, a contact block and a locking member, wherein the main body block is formed with an embedding groove; the contact block is embedded in the embedding groove, and the contact surface of the contact block facing away from the bottom wall of the embedding groove protrudes from the main body block, and the contact surface is used to contact the battery; the locking member is inserted into the main body block and the contact block to fix the contact block and the main body block. Thus, the contact block is embedded in the embedding groove, and the contact surface of the contact block protrudes from the main body block, and the battery pressing block can contact the battery through the contact surface, thereby reducing the risk of the main body block directly contacting the battery and causing damage to the battery. At the same time, the locking member is inserted into the main body block and the contact block, which improves the stability of the contact block embedded in the embedding groove, thereby facilitating the battery pressing block to contact the battery more stably.

[0006] In some embodiments, the contact block includes a first abutting surface and a second abutting surface, the second abutting surface and the contact surface are arranged opposite to each other; the embedded groove has a first side wall, the first side wall and the first abutting surface are abutted, and the bottom wall and the second abutting surface are abutted. Thus, the first abutting surface of the contact block abuts against the first side wall of the embedded groove, and the second abutting surface of the contact block abuts against the bottom wall of the embedded groove, thereby improving the stability of the connection between the contact block and the embedded groove.

[0007] In some embodiments, the first abutting surface is inclined relative to the second abutting surface and the contact surface, the first side wall is inclined relative to the bottom wall, the contact block is provided with a first locking hole, the first locking hole is perpendicular to the first abutting surface, the main body block is provided with a second locking hole, the second locking hole is perpendicular to the first side wall, the first locking hole and the second locking hole are correspondingly arranged, and the locking member is inserted into the first locking hole and the second locking hole. Thus, it is convenient for the locking member to be inserted into the main body block and the contact block through the first locking hole and the second locking hole, and it is convenient to fix the contact block and the main body block by inserting the locking member, and the first locking hole is perpendicular to the first abutting surface, and the second locking hole is correspondingly arranged to the first locking hole, so that when the locking member locks the contact block and the main body block, it is perpendicular to the first abutting surface and the second abutting surface, and further improves the stability of the connection between the contact block and the main body block.

[0008] In some embodiments, the embedding groove has a second side wall, the second side wall is connected to the bottom wall, the first side wall, the bottom wall and the second side wall form the embedding groove, and the contact block includes a third abutting surface, the third abutting surface is connected to the second abutting surface, and the third abutting surface is spaced apart from the second side wall. Thus, the first side wall, the bottom wall and the second side wall cooperate to form the embedding groove, and at the same time, the third abutting surface of the contact block is spaced apart from the second side wall of the embedding groove, providing a deformation space for the contact block, reducing the risk of the contact block being over-extruded and damaged, and increasing the service life of the contact block.

[0009] In some embodiments, the main body block includes an end face, the end face is connected to the opening side of the embedding groove, and the spacing between the contact surface and the end face is greater than or equal to 0.1 mm and less than or equal to 0.3 mm. Therefore, by limiting the spacing between the contact surface and the end face, the risk of direct contact between the main body block and the battery when the battery is clamped due to a small spacing can be alleviated, and the risk of the contact block protruding too much from the main body block, thereby reducing the fixing effect when the battery is clamped, can also be alleviated.

[0010] In some embodiments, the main body block includes an end face, the end face is connected to the opening side of the embedding groove, and the dimension between the side of the end face close to the contact block and the side away from the contact block is greater than or equal to 0.2 mm and less than or equal to 0.5 mm. Therefore, the end face has a sufficient thickness dimension between the side close to the contact block and the side away from the contact block, so that the main body block can protect the contact block and reduce the risk of damage to the contact block.

[0011] In some embodiments, the embedding groove is extended along a first direction parallel to the bottom wall, and there are multiple contact blocks, which are arranged along the first direction and embedded in the embedding groove. Thus, the battery pressing block can contact the battery through multiple contact blocks, which improves the stability and reliability of the contact between the battery pressing block and the battery, and can also reduce the difficulty of manufacturing the contact block compared to only one long strip contact block, and improve the strength of the single contact block.

[0012] In some embodiments, the main body block includes a plurality of partitions, and the plurality of partitions are spaced in the embedding groove along the first direction to divide the embedding groove into a plurality of embedding sub-grooves, and one contact block is embedded in one embedding sub-groove. Thus, the embedding groove is divided into a plurality of embedding sub-grooves by the partitions, so that the plurality of contact blocks are respectively embedded in the plurality of embedding sub-grooves, and the plurality of contact blocks are installed in the embedding groove along the first direction, and the stability of the contact blocks after being installed in the embedding groove can be improved.

[0013] In some embodiments, the contact block includes an embedded portion and an overlap portion, the overlap portions are located on both sides of the embedded portion along the first direction, the embedded portion is embedded in the embedded sub-groove, and the overlap portion overlaps the partition portion. Thus, the embedded portion is embedded in the embedded sub-groove, and the overlap portion overlaps the partition portion, which can further improve the stability of the connection between the contact block and the main block. At the same time, the overlap portion overlaps the partition portion, which can also reduce the risk that the battery pressing block is difficult to fully contact with the battery due to the distance between two adjacent contact blocks in the first direction being too far, thereby improving the stability of the contact between the battery pressing block and the battery.

[0014] In some embodiments, the main body block is provided with a fixing hole, and the fixing hole extends to the partition portion, thereby facilitating the fixing of the main body block through the fixing hole in conjunction with a fixing member, etc., further improving the reliability of the battery pressing block.

[0015] In order to solve the above problems, the present application provides a welding fixture, which includes a fixture assembly and the above-mentioned battery pressing block, and the battery pressing block is assembled on the fixture assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in 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 paying creative work.

[0017] Figure 1 is a first structural schematic diagram of a battery pressing block according to one or more embodiments of the present application;

[0018] Figure 2 is based on Figure 1 A top view of the battery compact shown;

[0019] Figure 3 is based on Figure 2 The schematic cross-sectional view of the battery compact shown is along the AA direction;

[0020] Figure 4 is a first structural schematic diagram of a contact block of a battery pressing block according to one or more embodiments of the present application;

[0021] Figure 5 is a first structural schematic diagram of a main body block of a battery pressing block according to one or more embodiments of the present application;

[0022] Figure 6 is based on Figure 5 The schematic cross-sectional view of the main body block shown along the BB direction;

[0023] Figure 7 is a second structural schematic diagram of a battery pressing block according to one or more embodiments of the present application;

[0024] Figure 8 is based on Figure 7 A partial enlarged schematic diagram of a battery pressing block shown;

[0025] Fig. 9 is a third structural schematic diagram of a battery pressing block according to one or more embodiments of the present application;

[0026] Fig.10 is a second structural schematic diagram of a contact block of a battery pressing block according to one or more embodiments of the present application;

[0027] Fig.11 is a second structural schematic diagram of a main body block of a battery pressing block according to one or more embodiments of the present application;

[0028] Fig.12 is based on Fig.10 The contact blocks shown and Fig.11 A fourth structural schematic diagram of a battery pressing block formed by the main body blocks shown;

[0029] Fig.13 It is a schematic diagram of the structure of a welding fixture according to one or more embodiments of the present application.

[0030] Figure numbers: battery pressing block 1; main body block 10; embedding groove 11; bottom wall 111; first side wall 112; second side wall 113; second locking hole 12; end face 13; partition portion 14; embedding sub-groove 15; fixing hole 16; contact block 20; contact surface 21; first abutting surface 22; second abutting surface 23; third abutting surface 24; first locking hole 25; embedding portion 26; overlapping portion 27; locking piece 30; welding fixture 2; assembly body 3; battery 4; first direction x1; spacing D1; dimension D2. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. 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.

[0036] 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).

[0037] 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.

[0038] 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.

[0039] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. 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, its market demand is also constantly expanding.

[0040] A battery may generally include a housing and battery cells, and the battery cells are contained in the housing. In a battery, there may be multiple battery cells, and the multiple battery cells may be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells is contained in the housing; of course, the battery may also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and contained in the housing. The battery may also include other structures. For example, the battery may also include a busbar component for realizing electrical connection between multiple battery cells.

[0041] The production methods of battery cells include stacking and winding, that is, battery cells are divided into stacking cells and winding cells. Stacking cells have uniform current collection effect, small internal resistance and large specific power, but in order to improve precision, the mold precision is extremely high, the equipment investment is high, and the process is relatively complex, and the production efficiency is low. Winding batteries are simple to make, and the production and assembly processes have general requirements for equipment precision, high production efficiency and low cost. In terms of performance, wound batteries have excellent high and low temperature performance, very fast charging, ultra-long life, stable high output voltage, strong structure and strong shock resistance.

[0042] A battery cell is the smallest unit that makes up a battery. A battery cell may include a housing, an electrode assembly, and other functional components, and the housing includes an end cap and a housing.

[0043] The end cap refers to a component that covers the opening of the shell to isolate the internal environment of the battery cell from the external environment. Without limitation, the shape of the end cap can be adapted to the shape of the shell to match the shell. Optionally, the end cap can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed when squeezed and collided, so that the battery cell can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals can be provided on the end cap. The electrode terminal can be used to electrically connect to the electrode assembly for outputting or inputting electrical energy of the battery cell. In some embodiments, the electrode terminal may include a pole. The pole may include a positive pole and a negative pole for outputting current and connecting to an external circuit. In some embodiments, the end cap may also be provided with an explosion-proof part for releasing the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The material of the end cap can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application are not particularly limited to this. In some embodiments, an insulating member may be provided inside the end cap, and the insulating member may be used to isolate the electrical connection components in the housing from the end cap to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0044] The shell is a component used to cooperate with the end cap to form the internal environment of the battery cell, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The shell and the end cap can be independent components, and an opening can be set on the shell, and the internal environment of the battery cell is formed by covering the opening with the end cap at the opening. Without limitation, the end cap and the shell can also be integrated. Specifically, the end cap and the shell can form a common connection surface before other components are put into the shell, and when the interior of the shell needs to be encapsulated, the end cap is covered with the shell. The shell can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell can be determined according to the specific shape and size of the electrode assembly. The material of the shell can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0045] In a related embodiment, a battery pressing block can be used to fix and limit the battery, so as to facilitate assembly, welding and processing of the battery. Existing battery pressing blocks are usually set as copper pressing blocks, etc. Such battery pressing blocks directly contact the battery and can easily crush the battery, causing battery damage. Therefore, in order to reduce damage to the battery, buffer parts such as Teflon tape and thin sheets are often pasted on the contact surface between the battery pressing block and the battery. However, the tape and thin sheets are consumable parts and need to be replaced frequently. If they are not replaced in time, the battery position will be offset, thereby interfering with the risk of welding deviation during laser welding, which in turn leads to the risk of increased costs and decreased production efficiency.

[0046] In order to solve the technical problems existing in the related art, the present application provides a battery pressing block, see Figure 1-Figure 3 , Figure 1 is a first structural schematic diagram of a battery pressing block according to one or more embodiments of the present application; Figure 2 is based on Figure 1 A top view of the battery compact shown; Figure 3 is based on Figure 2 The schematic cross-sectional view of the battery pressing block shown is along the AA direction.

[0047] The present application provides a battery pressing block 1, which includes: a main body block 10, a contact block 20 and a locking piece 30, wherein the main body block 10 is formed with an embedding groove 11; the contact block 20 is embedded in the embedding groove 11, and a contact surface 21 of the contact block 20 that is away from the bottom wall 111 of the embedding groove 11 protrudes from the main body block 10, and the contact surface 21 is used to contact the battery; the locking piece 30 is inserted between the main body block 10 and the contact block 20 to fix the contact block 20 and the main body block 10.

[0048] The material of the main body block 10 can be a material with a low thermal expansion coefficient, such as a metal material, wherein the metal material includes but is not limited to red copper. The main body block 10 is formed with an embedding groove 11, which can be recessed compared to the contact block 20. The embedding groove 11 can be any shape including but not limited to square, circular, trapezoidal, etc., and the embedding groove 11 can match the shape of the contact block 20. The material of the contact block 20 can be a non-metallic material with high wear resistance and high strength, including but not limited to polyetheretherketone (PEEK). The contact block 20 is embedded in the embedding groove 11. Exemplarily, the shape of the contact block 20 matches the embedding groove 11. When the embedding groove 11 is trapezoidal, the contact block 20 can also be trapezoidal, so that the contact block 20 can be stably embedded in the embedding groove 11.

[0049] The contact surface 21 of the contact block 20 facing away from the bottom wall 111 of the embedded groove 11 protrudes from the main block 10, and the contact surface 21 is used to contact the battery. In this embodiment, the battery can be the above-mentioned battery monomer, and the contact surface 21 can contact with the battery shell and other parts. The battery shell can have multiple surfaces to be contacted, and the contact surface 21 can contact with one or more of the multiple surfaces to be contacted. For example, the battery shell can be a rectangular parallelepiped, and the battery shell has four surfaces to be contacted in the circumferential direction. The contact surface 21 of the contact block 20 can contact with one of the surfaces to be contacted. In some application scenarios, the multiple contact surfaces 21 of multiple battery pressing blocks 1 can be respectively in contact with the multiple surfaces to be contacted of the battery shell, so as to facilitate contact and fixation of the battery from multiple directions. The contact surface 21 protruding from the main block 10 can refer to the contact surface 21 protruding from the opening side of the embedded groove 11 and the surface where the main block 10 is connected to the opening side. It can be understood that when the contact surface 21 contacts the battery, the contact surface 21 is closer to the surface to be contacted of the battery than the main block 10. The area of ​​the contact surface 21 can be arbitrarily set according to actual needs. For example, the area of ​​the contact surface 21 can match the area of ​​the battery surface to be contacted. A contact surface 21 can be in full contact with a surface to be contacted, or a contact surface 21 can be in partial contact with a surface to be contacted.

[0050] The locking member 30 is inserted into the main body block 10 and the contact block 20 to fix the contact block 20 and the main body block 10. The locking member 30 may include but is not limited to a bolt, a stud, etc. The contact block 20 and the main body block 10 may be fixedly connected by the locking member 30, so that the main body block 10 can drive the contact block 20 to move. For example, the main body block 10 can move back and forth in the direction close to the battery. When the main body block 10 is close to the battery, the contact block 20 can be relatively fixed to the main body block 10 through the locking member 30, so as to be close to the battery to make contact with the battery.

[0051] Through the above-mentioned embodiment, the contact block 20 is embedded in the embedding groove 11, and the contact surface 21 of the contact block 20 protrudes from the main body block 10. The battery pressing block 1 can contact the battery through the contact surface 21, thereby reducing the risk of the main body block 10 directly contacting the battery and causing damage to the battery. At the same time, the locking piece 30 is inserted between the main body block 10 and the contact block 20, which improves the stability of the contact block 20 embedded in the embedding groove 11, thereby facilitating the battery pressing block 1 to contact the battery more stably.

[0052] See also Figure 4-Figure 6 , Figure 4 is a first structural schematic diagram of a contact block of a battery pressing block according to one or more embodiments of the present application; Figure 5 is a first structural schematic diagram of a main body block of a battery pressing block according to one or more embodiments of the present application; Figure 6 is based on Figure 5The cross-sectional schematic diagram of the main block shown is along the BB direction.

[0053] In some embodiments, the contact block 20 includes a first abutting surface 22 and a second abutting surface 23, and the second abutting surface 23 and the contact surface 21 are arranged opposite to each other; the embedded groove 11 has a first side wall 112, the first side wall 112 and the first abutting surface 22 are abutted, and the bottom wall 111 and the second abutting surface 23 are abutted. The first abutting surface 22 of the contact block 20 abuts against the first side wall 112 of the embedded groove 11, and the shape of the first side wall 112 can match the first abutting surface 22. For example, the shape of the first side wall 112 can be a rectangle, and correspondingly, the shape of the first abutting surface 22 can also be a rectangle. The second abutting surface 23 and the contact surface 21 are arranged opposite to each other. Similarly, the shape of the bottom wall 111 can match the second abutting surface 23. For example, the shape of the bottom wall 111 can be a rectangle, and correspondingly, the shape of the second abutting surface 23 can also be a rectangle. In some application scenarios, the first abutting surface 22 can be used to connect the second abutting surface 23 and the contact surface 21. When the main body block 10 moves toward the battery, the first side wall 112 and the bottom wall 111 can respectively apply forces toward the battery to the first abutting surface 22 and the second abutting surface 23, thereby driving the contact block 20 to contact the battery. As a result, the first abutting surface 22 of the contact block 20 abuts against the first side wall 112 of the embedded groove 11, and the second abutting surface 23 of the contact block 20 abuts against the bottom wall 111 of the embedded groove 11, thereby improving the stability of the connection between the contact block 20 and the embedded groove 11.

[0054] In some embodiments, the first abutting surface 22 is inclined relative to the second abutting surface 23 and the contact surface 21, the first side wall 112 is inclined relative to the bottom wall 111, the contact block 20 is provided with a first locking hole 25, the first locking hole 25 is perpendicular to the first abutting surface 22, the main body block 10 is provided with a second locking hole 12, the second locking hole 12 is perpendicular to the first side wall 112, the first locking hole 25 and the second locking hole 12 are correspondingly arranged, and the locking member 30 is inserted into the first locking hole 25 and the second locking hole 12. The second locking hole 12 on the main body block 10 and the first locking hole 25 on the contact block 20 can allow the locking member 30 to enter the first locking hole 25 through the second locking hole 12. The locking member 30 is inserted into the first locking hole 25 and the second locking hole 12, which can mean that part of the locking member 30 is inserted into the first locking hole 25, and part of the locking member 30 is inserted into the second locking hole 12, so as to connect the main body block 10 and the contact block 20. The first locking hole 25 and the second locking hole 12 can be bolt holes or threaded holes, etc., and the locking member 30 can be a bolt, etc. For example, the first locking hole 25 is a threaded hole, and the second locking hole 12 is a bolt hole. The radial dimensions of the first locking hole 25 and the second locking hole 12 can be different. In some application scenarios, the radial dimension of the first locking hole 25 can be smaller than the radial dimension of the second locking hole 12. The first locking hole 25 is perpendicular to the first abutting surface 22, and the second locking hole 12 is perpendicular to the second abutting surface 23, so as to facilitate the connection of the locking member 30 with the contact block 20 and the main body block 10. Thus, it is convenient for the locking piece 30 to be inserted into the main block 10 and the contact block 20 through the first locking hole 25 and the second locking hole 12, and it is convenient to fix the contact block 20 and the main block 10 by inserting the locking piece 30. The first locking hole 25 and the first abutting surface 22 are perpendicular, and the second locking hole 12 and the first locking hole 25 are arranged correspondingly, so that the locking piece 30 can lock the contact block 20 and the main block 10 so that the first abutting surface 22 and the second abutting surface 23 are perpendicular to each other, thereby further improving the stability of the connection between the contact block 20 and the main block 10.

[0055] In some embodiments, the embedded groove 11 has a second side wall 113, the second side wall 113 is connected to the bottom wall 111, the first side wall 112, the bottom wall 111 and the second side wall 113 form the embedded groove 11, and the contact block 20 includes a third abutting surface 24, the third abutting surface 24 is connected to the second abutting surface 23, and the third abutting surface 24 is spaced from the second side wall 113. The second side wall 113 can be tilted relative to the bottom wall 111. Exemplarily, the angle formed by the second side wall 113 and the bottom wall 111 can be an obtuse angle. In some application scenarios, the radial dimension of the notch of the embedded groove 11 formed by the first side wall 112, the bottom wall 111 and the second side wall 113 is larger than the radial dimension of the bottom wall 111, so as to facilitate the contact block 20 to enter and exit the embedded groove 11. It is understandable that when the contact block 20 contacts the battery, the contact block 20 will be deformed to a certain extent under the compression of the battery and the main body block 10. The third abutting surface 24 is spaced apart from the second side wall 113, providing sufficient deformation space for the contact block 20, reducing the risk of damage to the contact block 20 due to compression. Thus, it is convenient for the first side wall 112, the bottom wall 111 and the second side wall 113 to cooperate to form the embedded groove 11, and at the same time, the third abutting surface 24 of the contact block 20 is spaced apart from the second side wall 113 of the embedded groove 11, providing deformation space for the contact block 20, reducing the risk of damage to the contact block 20 due to excessive compression, and improving the service life of the contact block 20.

[0056] See also Figure 7-Figure 8 , Figure 7 is a second structural schematic diagram of a battery pressing block according to one or more embodiments of the present application; Figure 8 is based on Figure 7 A partial enlarged schematic diagram of the battery pressing block is shown.

[0057] In some embodiments, the main body block 10 includes an end face 13, the end face 13 is connected to the opening side of the embedding groove 11, and the spacing D1 between the contact surface 21 and the end face 13 is greater than or equal to 0.1 mm and less than or equal to 0.3 mm. The spacing D1 between the contact surface 21 and the end face 13 can be greater than or equal to 0.1 mm and less than or equal to 0.2 mm, greater than or equal to 0.2 mm and less than or equal to 0.25 mm, and so on. Specifically, the spacing D1 between the contact surface 21 and the end face 13 can be 0.1 mm, 0.12 mm, 0.15 mm, 0.2 mm, 0.26 mm, 0.3 mm, and so on. It can be understood that when the contact block 20 contacts the battery, the contact surface 21 will be deformed to a certain extent under the pressure of the battery. At this time, the contact surface 21 will be closer to the end face 13 than in the natural state, and the spacing D1 between the contact surface 21 and the end face 13 can change accordingly. In some application scenarios, the distance D1 between the contact surface 21 and the end surface 13 is always greater than zero under the extrusion of the battery to reduce the risk of contact between the battery and the end surface 13. Therefore, by limiting the distance D1 between the contact surface 21 and the end surface 13, the risk of direct contact between the main body block 10 and the battery when the battery is clamped due to a small distance D1 can be alleviated, and the risk of the contact block 20 protruding too much from the main body block 10, thereby reducing the fixing effect when the battery is clamped, can also be alleviated.

[0058] In some embodiments, the main body block 10 includes an end face 13, the end face 13 is connected to the opening side of the embedding groove 11, and the dimension D2 between the side of the end face 13 close to the contact block 20 and the side away from the contact block 20 is greater than or equal to 0.2 mm and less than or equal to 0.5 mm. The dimension D2 between the side of the end face 13 close to the contact block 20 and the side away from the contact block 20 can be greater than or equal to 0.2 mm and less than or equal to 0.3 mm, greater than or equal to 0.3 mm and less than or equal to 0.4 mm, greater than or equal to 0.4 mm and less than or equal to 0.5 mm, etc. Specifically, the dimension D2 between the side of the end face 13 close to the contact block 20 and the side away from the contact block 20 can be 0.2 mm, 0.25 mm, 0.37 mm, 0.45 mm, 0.48 mm, 0.5 mm, etc. It is understandable that if the dimension D2 between the side of the end face 13 close to the contact block 20 and the side away from the contact block 20 is too small, the main body block 10 may be damaged due to being too thin at the end face 13 and the contact block 20 may be damaged. If it is too large, the end face 13 may interfere with other components in the working environment. Therefore, the end face 13 has a sufficient thickness dimension between the side close to the contact block 20 and the side away from the contact block 20, so that the main body block 10 can protect the contact block 20 and reduce the risk of damage to the contact block 20.

[0059] See also Fig. 9 , Fig. 9is a third structural schematic diagram of a battery pressing block according to one or more embodiments of the present application.

[0060] In some embodiments, the embedding groove 11 is extended along the first direction x1 parallel to the bottom wall 111, and the number of contact blocks 20 is multiple, and the multiple contact blocks 20 are arranged along the first direction x1 and embedded in the embedding groove 11. Multiple contact blocks 20 can contact a surface to be contacted of the battery at the same time. For example, the surface to be contacted of the battery can extend in the first direction x1, and the multiple contact blocks 20 arranged along the first direction x1 respectively contact part of the surface to be contacted, so as to facilitate the battery pressing block 1 to fully contact the battery to limit the battery. The extension length of each contact block 20 in the first direction x1 and the number of contact blocks 20 arranged in the first direction x1 can be specifically set according to actual conditions. In some application scenarios, the number of contact blocks 20 may be four, and the four contact blocks 20 are arranged along the first direction x1 and embedded in the embedding groove 11, and can move with the movement of the main body block 10. The contact surfaces 21 of the four contact blocks 20 can be on the same plane, so that when the contact surface 21 of one of the contact blocks 20 contacts the battery, the contact surfaces 21 of the remaining contact blocks 20 can also contact the battery. In this way, the battery pressing block 1 can contact the battery through multiple contact blocks 20, respectively, which improves the stability and reliability of the contact between the battery pressing block 1 and the battery, and compared with only one long strip contact block 20, it can also reduce the difficulty of manufacturing the contact block 20, and improve the self-strength of a single contact block 20.

[0061] See also Figure 10-12 , Fig.10 is a second structural schematic diagram of a contact block of a battery pressing block according to one or more embodiments of the present application; Fig.11 is a second structural schematic diagram of a main body block of a battery pressing block according to one or more embodiments of the present application; Fig.12 is based on Fig.10 The contact blocks shown and Fig.11 A fourth structural schematic diagram of a battery pressing block formed by the main body blocks shown.

[0062] Further, the main body block 10 includes a plurality of partitions 14, and the plurality of partitions 14 are spaced in the embedding groove 11 along the first direction x1 to divide the embedding groove 11 into a plurality of embedding sub-grooves 15, and one contact block 20 is embedded in one embedding sub-groove 15. The partitions 14 can be spaced along the first direction x1, and the spacing distance between two adjacent partitions 14 can match the extension length of the contact block 20 in the first direction x1, so that the contact block 20 can be embedded in the embedding sub-groove 15 separated by the partition 14. The plurality of embedding sub-grooves 15 can also be spaced along the first direction x1. It can be understood that the plurality of contact blocks 20 are respectively embedded in the corresponding embedding sub-grooves 15, which reduces the mutual interference between two adjacent contact blocks 20 and improves the stability of the contact block 20. The number of partitions 14 and contact blocks 20 can be set according to actual needs. For example, the number of partitions 14 can be six, and the six partitions 14 are spaced in the embedding groove 11 along the first direction x1, wherein two partitions 14 are respectively located at the two ends of the embedding groove 11 in the first direction x1, and the six partitions 14 can divide the embedding groove 11 into five embedding sub-grooves 15, and correspondingly, five contact blocks 20 can be respectively embedded in the five embedding sub-grooves 15. Thus, the embedding groove 11 is divided into a plurality of embedding sub-grooves 15 by the partitions 14, so that a plurality of contact blocks 20 are respectively embedded in a plurality of embedding sub-grooves 15, and it is convenient to install a plurality of contact blocks 20 in the embedding groove 11 along the first direction x1, and at the same time, the stability of the contact blocks 20 after being installed in the embedding groove 11 can be improved.

[0063] Optionally, the contact block 20 includes an embedded portion 26 and an overlap portion 27, the overlap portion 27 is located on both sides of the embedded portion 26 along the first direction x1, the embedded portion 26 is embedded in the embedded sub-groove 15, and the overlap portion 27 overlaps the partition portion 14. The overlap portions 27 of two adjacent contact blocks 20 can overlap on the same overlap portion 27 between the two contact blocks 20. In some application scenarios, the length dimension of the portion of the overlap portion 27 overlapping the partition portion 14 in the first direction x1 may be less than or equal to half of the length dimension of the partition portion 14 in the first direction x1. When the length dimension of the portion of the overlap portion 27 overlapping the partition portion 14 in the first direction x1 is equal to half of the length dimension of the partition portion 14 in the first direction x1, the overlap portions 27 of the two adjacent contact blocks 20 may just completely cover the overlap portion 27. It is understandable that the thickness of the embedded portion 26 may be greater than the thickness of the overlapping portion 27. In some embodiments, the sum of the thickness of the partition portion 14 and the thickness of the overlapping portion 27 may be substantially consistent with the thickness of the embedded portion 26, so that all locations on the contact surface 21 are substantially located on the same plane. Thus, the embedded portion 26 is embedded in the embedded sub-groove 15, and the overlapping portion 27 overlaps the partition portion 14, which can further improve the stability of the connection between the contact block 20 and the main body block 10. At the same time, the overlapping portion 27 overlaps the partition portion 14, which can also reduce the risk that the battery pressing block 1 is difficult to fully contact with the battery due to the distance between the two adjacent contact blocks 20 in the first direction x1 being too far apart, thereby improving the stability of the contact between the battery pressing block 1 and the battery.

[0064] In some embodiments, the main body block 10 is provided with a fixing hole 16, and the fixing hole 16 extends to the partition portion 14. The fixing hole 16 may include but is not limited to a threaded hole. In some application scenarios, the fixing hole 16 may pass through the partition portion 14. The fixing hole 16 may cooperate with a fixing member, and the fixing member may include but is not limited to a bolt, a screw, etc. Exemplarily, the fixing member may be inserted into the fixing hole 16 to fix the main body block 10 and reduce the risk of the main body block 10 being offset during operation. As a result, it is convenient to fix the main body block 10 by means of the fixing hole 16 in cooperation with the fixing member, etc., further improving the reliability of the battery pressing block 1.

[0065] See also Fig.13 , Fig.13 It is a schematic diagram of the structure of a welding fixture according to one or more embodiments of the present application.

[0066] The welding fixture 2 includes a fixture assembly 3 and the battery pressing block 1 , and the battery pressing block 1 is assembled on the fixture assembly 3 .

[0067] Specifically, the fixture assembly 3 can be equipped with at least one battery pressing block 1, for example, one, two, three, four or more battery pressing blocks 1 can be assembled, and the multiple battery pressing blocks 1 on the same assembly 3 can include the battery pressing blocks 1 of the above-mentioned different embodiments. Fig.13 Taking the welding fixture 2 shown as an example, the assembly 3 of the welding fixture 2 can be equipped with the battery pressing blocks 1 of the above three different embodiments, and the three battery pressing blocks 1 respectively have one contact surface 21, four contact surfaces 21, and five contact surfaces 21, wherein the battery pressing block 1 with five contact surfaces 21 includes a plurality of partition parts. The three battery pressing blocks 1 can be combined to form a welding station, wherein, in a welding station, the number of battery pressing blocks 1 with one contact surface 21 is two, the number of battery pressing blocks 1 with four contact surfaces 21 and the number of battery pressing blocks 1 with five contact surfaces 21 are one, respectively, the contact surfaces 21 of the two battery pressing blocks 1 with one contact surface 21 are arranged relatively spaced, and the contact surfaces 21 of the two battery pressing blocks 1 with four contact surfaces 21 and the two battery pressing blocks with five contact surfaces 21 are arranged relatively spaced in a direction perpendicular to the spacing direction of the two battery pressing blocks 1 with one contact surface 21, so that the above four battery pressing blocks 1 surround and form a welding station, and the contact surfaces 21 of the four battery pressing blocks 1 can all face the welding station. The battery 4 can be placed in a welding station, and the welding station can be used to fix the battery 4. The battery 4 can be a battery cell. For example, the battery cell has an end cover and a shell. In the circumferential direction of the end cover, the shell can have four surfaces to be contacted. Each battery pressing block 1 in the welding station contacts each surface to be contacted respectively, thereby clamping the shell, so that the shell is clamped and fixed in the welding station, so that the end cover covers the opening of the shell, and the end cover can be welded along the opening of the shell to fix the end cover to the shell. Among them, two battery pressing blocks 1 with one contact surface 21 can be close to each other, and the battery pressing block 1 with five contact surfaces 21 can remain stationary relative to the assembly 3. The battery pressing block 1 with four contact surfaces 21 can be close to the battery pressing block 1 with five contact surfaces 21 to clamp the battery cell. The welding fixture 2 can have two clamping stations, and the two clamping stations can be symmetrically arranged. In some other embodiments, the welding fixture 2 may be formed with three, four or more clamping stations. It is understandable that each clamping station may be formed by the battery pressing block 1 of the above-mentioned different embodiments. The specific type, number and arrangement of the battery pressing block 1 may be set according to actual needs, for example, it may be set according to the actual shape of the battery 4, which is not limited here. Thus, the battery 4 may be fixed by the welding fixture 2 equipped with the battery cell, thereby improving the stability of the fixation of the battery 4.

[0068] In summary, the battery pressing block 1 provided by the present application includes: a main body block 10, a contact block 20 and a locking member 30, wherein the main body block 10 is formed with an embedding groove 11; the contact block 20 is embedded in the embedding groove 11, and the contact surface 21 of the contact block 20 facing away from the bottom wall 111 of the embedding groove 11 protrudes from the main body block 10, and the contact surface 21 is used to contact the battery; the locking member 30 is inserted into the main body block 10 and the contact block 20 to fix the contact block 20 and the main body block 10. The contact block 20 is embedded in the embedding groove 11, and the contact surface 21 of the contact block 20 protrudes from the main body block 10, and the battery pressing block 1 can contact the battery through the contact surface 21, thereby reducing the risk of the main body block 10 directly contacting the battery and causing damage to the battery, and at the same time, the locking member 30 is inserted into the main body block 10 and the contact block 20, which improves the stability of the contact block 20 embedded in the embedding groove 11, thereby facilitating the battery pressing block 1 to contact the battery more stably. Compared with other types of battery compacts, the battery compact 1 of the present application can contact the battery more stably and reliably, without the need to frequently replace wearing parts such as tapes and sheets, thereby reducing the risk of damaging the battery, achieving higher production efficiency and lower production costs.

[0069] 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 compact, characterized in that: The battery pressing block comprises: A main body block is formed with an embedding groove; A contact block is embedded in the embedding groove, a contact surface of the contact block facing away from the bottom wall of the embedding groove protrudes from the main body block, and the contact surface is used to contact the battery; A locking piece is inserted into the main body block and the contact block to fix the contact block and the main body block.

2. The battery pressing block according to claim 1, characterized in that: The contact block comprises a first abutting surface and a second abutting surface, wherein the second abutting surface and the contact surface are arranged opposite to each other; The embedding groove has a first side wall, the first side wall abuts against the first abutting surface, and the bottom wall abuts against the second abutting surface.

3. The battery pressing block according to claim 2, characterized in that: The first abutting surface is inclined relative to the second abutting surface and the contact surface, the first side wall is inclined relative to the bottom wall, the contact block is provided with a first locking hole, the first locking hole is perpendicular to the first abutting surface, the main body block is provided with a second locking hole, the second locking hole is perpendicular to the first side wall, the first locking hole and the second locking hole are correspondingly arranged, and the locking piece is inserted into the first locking hole and the second locking hole.

4. The battery pressing block according to claim 2, characterized in that: The embedding groove has a second side wall, the second side wall is connected to the bottom wall, the first side wall, the bottom wall and the second side wall form the embedding groove, the contact block includes a third abutting surface, the third abutting surface is connected to the second abutting surface, and the third abutting surface is spaced apart from the second side wall.

5. The battery pressing block according to any one of claims 2 to 4, characterized in that: The main body block includes an end face, the end face is connected to the opening side of the embedding groove, and the spacing between the contact surface and the end face is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

6. The battery pressing block according to any one of claims 2 to 4, characterized in that: The main body block includes an end face connected to the opening side of the embedding groove, and a dimension between a side edge of the end face close to the contact block and a side edge away from the contact block is greater than or equal to 0.2 mm and less than or equal to 0.5 mm.

7. The battery pressing block according to any one of claims 1 to 4, characterized in that: The embedding groove is extended along a first direction parallel to the bottom wall. There are multiple contact blocks, which are arranged along the first direction and embedded in the embedding groove.

8. The battery pressing block according to claim 7, characterized in that: The main body block includes a plurality of partition parts, and the plurality of partition parts are spaced in the embedding groove along the first direction to divide the embedding groove into a plurality of embedding sub-grooves, and one of the contact blocks is embedded in one of the embedding sub-grooves.

9. The battery pressing block according to claim 8, characterized in that: The contact block comprises an embedded portion and an overlap portion, wherein the overlap portions are located at two sides of the embedded portion along the first direction, the embedded portion is embedded in the embedded sub-groove, and the overlap portion overlaps the partition portion.

10. The battery pressing block according to claim 8, characterized in that: The main body block is provided with a fixing hole, and the fixing hole extends to the partition part.

11. A welding fixture, characterized in that: The welding fixture comprises a fixture assembly and a battery pressing block as claimed in any one of claims 1 to 10, wherein the battery pressing block is assembled on the fixture assembly.

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