Square battery top cover welding protective cover

Abstract

A square battery top cover welding protective cover belongs to the technical field of battery structures, and comprises a connecting plate, a front stop block and a rear stop block are elastically arranged on the connecting plate, a protective surface is arranged on the stop blocks, and the protective surface is used for protecting a pole and a plastic part of the pole. According to the square battery top cover welding protective cover provided by the utility model, the mounting positions of the connecting plates on the two sides can be adjusted according to the distance between the two pole columns of a square battery, the mounting distance between the front baffle block and the rear baffle block on the two sides can be adjusted according to the width size of the pole columns, and then the protective cover covers the battery cover plate for top cover welding; the device is simple in structure, easy to adjust, convenient to operate, good in universality and capable of being adjusted and applied to square batteries of different sizes, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery structures, and more specifically, to a square battery top cover welding protection cover. Background Art

[0002] A prismatic battery consists of a top cover and a shell. The top cover is equipped with a terminal assembly, which includes a terminal and a plastic component for securing the terminal to the top cover. The shell is square, and after the top cover is attached to one end of the shell, the seam between the top cover and the shell requires laser welding. When laser welding the top cover of a prismatic battery, the laser light is reflected, which can easily burn the plastic component on the battery terminal, causing structural damage. Utility Model Content

[0003] (1) Technical issues

[0004] Therefore, how to protect the plastic parts on the top cover when the top cover is laser welded has become an urgent problem to be solved by those skilled in the art.

[0005] (2) Technical solution

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] The utility model provides a square battery top cover welding protection cover, in the utility model, the square battery top cover welding protection cover comprises:

[0008] A left side unit, the left side unit includes a left connecting plate, a first front stopper and a first rear stopper are provided on the left connecting plate, the first front stopper can be elastically movably provided on the front side of the left connecting plate in the front-to-back direction, the first rear stopper can be elastically movably provided on the rear side of the left connecting plate in the front-to-back direction, a first front protective surface is provided on the first front stopper, a first rear protective surface is provided on the first rear stopper, and a first side protective surface is provided on the first front stopper and / or the first rear stopper, the first front protective surface, the first rear protective surface and the first side protective surface forming a protective structure for the plastic part on the left side of the square battery top cover;

[0009] A right side unit, the right side unit includes a right connecting plate, a second front stopper and a second rear stopper are provided on the right connecting plate, the second front stopper can be elastically movably provided on the front side of the right connecting plate in the front-to-back direction, the second rear stopper can be elastically movably provided on the rear side of the right connecting plate in the front-to-back direction, a second front protective surface is provided on the second front stopper, a second rear protective surface is provided on the second rear stopper, and a second side protective surface is provided on the second front stopper and / or the second rear stopper, the second front protective surface, the second rear protective surface and the second side protective surface form a protective structure for the plastic part on the right side of the square battery top cover;

[0010] The left connecting plate is connected to the right connecting plate.

[0011] Preferably, in the square battery top cover welding protective cover provided by the present invention, the first side protection surface includes a first front block side protection surface and a first rear block side protection surface, the first front protection surface and the first front block side protection surface form an L-shaped side wall structure, the first rear protection surface and the first rear block side protection surface form an L-shaped side wall structure, and the first front block side protection surface and the first rear block side protection surface can slide relative to each other; the second side protection surface includes a second front block side protection surface and a second rear block side protection surface, the second front protection surface and the second front block side protection surface form an L-shaped side wall structure, the second rear protection surface and the second rear block side protection surface form an L-shaped side wall structure, and the second front block side protection surface and the second rear block side protection surface can slide relative to each other.

[0012] and a first spring mounting hole provided on the rear end of the first block, the first spring being adapted to engage with the first front stop spring and the first rear stop spring when the block is in a forward or backward direction. The first rear stop block boss is slidably assembled in the first rear side mounting hole, and a first rear stop spring mounting hole is provided on the first rear stop block boss and along the front-to-back direction, and a spring stop is provided in the first rear stop spring mounting hole, and the spring stop is fixed relative to the left connecting plate, and a compression spring is provided in the first rear stop spring mounting hole, and the compression spring and the spring stop are used to resist the first rear stop and apply a rebound force toward the direction of the left connecting plate; the first front stop block boss and the first rear stop boss are spaced apart, and an adjustment block that can be rotatably engaged relative to the left connecting plate is provided between the first front stop boss and the first rear stop boss, and the adjustment block can resist the first front stop boss and the first rear stop boss for adjusting the distance between the first front stop boss and the first rear stop boss during its rotation.

[0013] The second rear end of the right battery pack is fixedly mounted on the left side of the right connecting plate, and a second rear end mounting hole is provided on the rear side of the right connecting plate; a second front stop boss is provided on the second front stop boss, and the second front stop spring mounting hole is provided on the second front stop boss and along the front-to-back direction. A spring stop is provided in the second front stop spring mounting hole that slides with the second front stop spring mounting hole, and the spring stop is fixed relative to the right connecting plate, and a compression spring is provided in the second front stop spring mounting hole, and the compression spring and the spring stop are used to resist the second front stop and apply a rebound force toward the right connecting plate; a second rear stop boss is provided on the second rear stop The second rear stop block boss is slidably assembled in the second rear side mounting hole, and a second rear stop spring mounting hole is provided on the second rear stop block boss and along the front-to-back direction, and a spring stop is provided in the second rear stop spring mounting hole, and the spring stop is fixed relative to the right connecting plate, and a compression spring is provided in the second rear stop spring mounting hole, and the compression spring and the spring stop are used to abut against the spring stop for applying a rebound force toward the direction of the right connecting plate; the second front stop block boss and the second rear stop boss are spaced apart, and an adjustment block that can be rotatably engaged relative to the right connecting plate is provided between the second front stop boss and the second rear stop boss, and the adjustment block can abut against the second front stop boss and the second rear stop boss for adjusting the distance between the second front stop boss and the second rear stop boss during its rotation.

[0014] Preferably, in the square battery top cover welding protective cover provided by the present invention, two first front block spring mounting holes are provided and are spaced apart in the left and right directions; two first rear block spring mounting holes are provided and are spaced apart in the left and right directions; two second front block spring mounting holes are provided and are spaced apart in the left and right directions; two second rear block spring mounting holes are provided and are spaced apart in the left and right directions.

[0015] Preferably, the square battery top cover welding protection cover provided by the present invention further includes a left pressure cover, which is arranged on the upper side of the left connecting plate, and the spring stopper is arranged on the left pressure cover.

[0016] Preferably, the square battery top cover welding protection cover provided by the present invention further includes a right side pressure cover, the right side pressure cover is arranged on the upper side of the right connecting plate, and the spring stopper is arranged on the right side pressure cover.

[0017] Preferably, in the square battery top cover welding protective cover provided by the present invention, the adjustment block is a shuttle-shaped structure or an elliptical structure, and a knob is provided with the adjustment block through a connecting column, and the connecting column is provided through the left connecting plate or the right connecting plate.

[0018] Preferably, in the square battery top cover welding protective cover provided by the present invention, the left connecting plate is provided with a first adjustment plate, and a plurality of first adjustment holes are provided on the first adjustment plate in the left and right directions; the right connecting plate is provided with a second adjustment plate, and a plurality of second adjustment holes are provided on the second adjustment plate in the left and right directions; an adjustment bolt group is provided through the first adjustment hole and the second adjustment hole, and the distance between the left connecting plate and the right connecting plate is adjusted by cooperating with the adjustment bolt group and different first adjustment holes and the second adjustment holes.

[0019] Preferably, in the square battery top cover welding protective cover provided by the present invention, the left connecting plate, the first front block and the first rear block are all integrated structural parts; the right connecting plate, the second front block and the second rear block are all integrated structural parts.

[0020] (3) Beneficial effects

[0021] Through the above structural design, the square battery top cover welding protective cover provided by the present invention has an adjustable spacing between the left and right units, and the front and rear blocks provided on the left and right units can also be adjusted relative to the connecting plate. In the square battery top cover welding protective cover provided by the present invention, the present invention can adjust the installation position of the connecting plates on both sides according to the spacing between the two poles of the square battery, adjust the installation spacing of the front and rear blocks on both sides according to the width of the pole, and then put the protective cover on the battery cover plate for top cover welding. The present invention has a simple structure, is easy to adjust, is convenient to operate, and has good versatility. It can be adjusted and applied to square batteries of different sizes, reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0023] Figure 1 This is a structural diagram of the embodiment of the utility model in which the upper stopper of the square battery top cover welding protection cover is disassembled;

[0024] Figure 2This is a structural diagram of a square battery top cover welding protective cover before being installed on a square battery in an embodiment of the present utility model;

[0025] Figure 3 This is a structural diagram of the embodiment of the utility model when the upper stopper of the square battery top cover welding protection cover is retracted;

[0026] Figure 4 This is a schematic structural diagram of the embodiment of the present invention when the stopper is installed on the connecting plate (reverse side);

[0027] Figure 5 This is a top view of the square battery top cover welded to the protective cover in the embodiment of the present utility model;

[0028] Figure 6 for Figure 5 A partial perspective view of the square battery top cover welding protective cover in the neutral state;

[0029] Figure 7 for Figure 5 Cross-sectional view of the square battery top cover welded protective cover in the state.

[0030] exist Figures 1 to 7 , the corresponding relationship between component names and reference numerals is as follows:

[0031] Left connecting plate 1, first front block 2, first rear block 3, first front block boss 4, first rear block boss 5, left pressure cover 6, right connecting plate 7, second front block 8, second rear block 9, second front block boss 10, second rear block boss 11, right pressure cover 12, first adjusting plate 13, second adjusting plate 14, adjusting block 15, and rotating knob 16. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with examples. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompass such modifications and variations as come within the scope of the appended claims and their equivalents.

[0033] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] Please refer to Figures 1 to 7 ,in, Figure 1 This is a structural diagram of the embodiment of the utility model in which the upper stopper of the square battery top cover welding protection cover is disassembled; Figure 2 This is a structural diagram of a square battery top cover welding protective cover before being installed on a square battery in an embodiment of the present utility model; Figure 3 This is a structural diagram of the embodiment of the utility model when the upper stopper of the square battery top cover welding protection cover is retracted; Figure 4 This is a structural diagram of the embodiment of the present invention when the stopper is installed on the connecting plate; Figure 5 This is a top view of the square battery top cover welded to the protective cover in the embodiment of the present utility model; Figure 6 for Figure 5 A partial perspective view of the square battery top cover welding protective cover in the neutral state; Figure 7 for Figure 5 Cross-sectional view of the square battery top cover welded protective cover in the state.

[0035] The utility model provides a square battery top cover welding protection cover, which can be sleeved on (covered) the pole and plastic parts on the square battery top cover, so as to protect the plastic parts when the battery top cover is welded to the battery shell.

[0036] In the present invention, the square battery top cover welding protective cover includes a left unit and a right unit, which can respectively cover the positive electrode column and the plastic parts arranged thereon and the negative electrode column and the plastic parts arranged thereon. The structures of the left unit and the right unit are basically the same, and the left unit (the left connecting plate 1 of the left unit) is connected to the right unit (the right connecting plate 7 of the right unit) to form an integral structure.

[0037] Specifically, the left side unit includes a left connecting plate 1, which is made of a hard material, preferably a metal material (such as alloy steel or alloy aluminum, etc.). The left connecting plate 1 is an integral structure (that is, the left connecting plate 1 is an integrally formed metal component). The left connecting plate 1 is preferably a rectangular plate structure, and its length direction is the left-right direction, and its width direction is the front-back direction. The left connecting plate 1 is the basic structure of the left side unit. A first front block 2 and a first rear block 3 are provided on the left connecting plate 1. The first front block 2 can be elastically movably provided on the front side of the left connecting plate 1 in the front-back direction (that is, the width direction of the left connecting plate 1). The first rear block 3 can be elastically movably provided on the rear side of the left connecting plate 1 in the front-back direction. A first front protective surface is provided on the first front block 2 (the first front protective surface is a vertically arranged plane structure, and the first front protective surface extends downward in front of the bottom of the first front block 2). The first front protective surface and the first front block side protective surface form an L-shaped side wall structure. The first rear block 3 and the first front block 2 are mirror-symmetrical structures. Specifically, a first rear protective surface and a first rear block side protection surface are provided on the first rear block 3. The first rear protective surface and the first rear block side protection surface form an L-shaped side wall structure. The first front block side protection surface and the first rear block side protection surface are a sliding abutting structure. The first front protective surface, the first front block side protection surface, the first rear protective surface and the first rear block side protection surface form a protective structure for the plastic part on the square battery top cover.

[0038] In addition to the above-mentioned structural design, the utility model can also perform structural optimization on the first front block side protection surface, the first rear block side protection surface, the second front block side protection surface, and the second rear block side protection surface. For example, only one side protection surface is set on the first front block or the first rear block, and only on the second front block or the second rear block (the side protection surface set on the first front block side protection surface or the first rear block side protection surface is the first side protection surface, and the side protection surface set on the second front block side protection surface or the second rear block side protection surface is the second side protection surface), and then the length of the side protection surface is extended so that when the front and rear block blocks are in the maximum expanded state, the side protection surface can still form a complete protection structure with the front and rear protection surfaces (the laser will not pass through the protection surface).

[0039] Specifically, the right side unit includes a right connecting plate 7, which is made of a hard material, preferably a metal material (such as alloy steel or alloy aluminum, etc.). The right connecting plate 7 is an integral structure (i.e., the right connecting plate 7 is an integrally formed metal component). The right connecting plate 7 is preferably a rectangular plate structure, with its length direction being the left-right direction and its width direction being the front-to-back direction. The right connecting plate 7 is the basic structure of the right side unit. A second front stopper 8 and a second rear stopper 9 are provided on the right connecting plate 7. The second front stopper 8 can be elastically and movably provided at the front side of the right connecting plate 7 in the front-to-back direction (i.e., the width direction of the right connecting plate 7). The second rear stopper 9 can be elastically and movably provided at the rear side of the right connecting plate 7 in the front-to-back direction. A second front protective surface is provided on the second front stopper 8 (the second front protective surface is a vertically arranged plane structure, and the second front protective surface extends downward in front of the bottom of the second front stopper 8). The second front protective surface is connected to the second front block side protection surface to form an L-shaped side wall structure. The second front protective surface is connected to the second front block side protection surface to form an L-shaped side wall structure. The second rear block 9 and the second front block 8 are mirror-symmetrical structures. Specifically, a second rear protective surface and a second rear block side protection surface are provided on the second rear block 9. The second rear protective surface and the second rear block side protection surface form an L-shaped side wall structure. The second front block side protection surface and the second rear block side protection surface are a sliding abutment structure. The second front protective surface, the second front block side protection surface, the second rear protective surface and the second rear block side protection surface form a protective structure for the plastic part on the square battery top cover.

[0040] As can be seen from the above, the first front block 2 and the first rear block 3 are slidably mounted on the left connecting plate 1, and the second front block 8 and the second rear block 9 are slidably mounted on the right connecting plate 7. Specifically, the left connecting plate 1 has a certain thickness (greater than the thickness of the first front block 2 and the first rear block 3), a first mounting groove is provided on the bottom surface of the left connecting plate 1, a first front side mounting hole is provided on the front side surface of the left connecting plate 1, and a first rear side mounting hole is provided on the rear side surface of the left connecting plate 1. The first mounting groove is a rectangular groove, the first front side mounting hole is a rectangular hole, and the first rear side mounting hole is a rectangular hole. A first front block boss 4 is provided on the first front block 2. The first front block boss 4 is designed according to the hole shape of the first front side mounting hole, with the design standard being that it can be stably inserted into the first front side mounting hole and can form a sliding fit structure with the first front side mounting hole. The first front stopper boss 4 is slidably assembled in the first front side mounting hole, so that the first front stopper 2 can be slidably mounted on the left connecting plate 1 through the cooperation between the first front stopper boss 4 and the first front side mounting hole. A first front stopper spring mounting hole is provided on the first front stopper boss 4 and along the front-to-back direction. The first front stopper spring mounting hole is an elongated hole. A spring stopper that slidably cooperates with it (the first front stopper spring mounting hole) is provided in the first front stopper spring mounting hole. The spring stopper is fixed relative to the left connecting plate 1. A compression spring is provided in the first front stopper spring mounting hole. The compression spring and the spring stopper are used to apply a rebound force to the first front stopper 2 toward the left connecting plate 1. When the first front stopper 2 moves away from the left connecting plate 1, the compression spring is compressed, causing the first front stopper 2 to have a reset tendency. Specifically, the right connecting plate 7 has a certain thickness (greater than the thickness of the second front block 8 and the second rear block 9). A second mounting groove is provided on the bottom surface of the right connecting plate 7, a second front side mounting hole is provided on the front side of the right connecting plate 7, and a second rear side mounting hole is provided on the rear side of the right connecting plate 7. The second mounting groove is a rectangular groove, the second front side mounting hole is a rectangular hole, and the second rear side mounting hole is a rectangular hole. A second front block boss 10 is provided on the second front block 8. The second front block boss 10 is designed according to the hole shape of the second front side mounting hole, with the design standard being that it can be stably inserted into the second front side mounting hole and can form a sliding fit structure with the second front side mounting hole. The second front block boss 10 can be slidably assembled in the second front side mounting hole, so that the second front block 8 can be slidably installed on the right connecting plate 7 through the cooperation between the second front block boss 10 and the second front side mounting hole.A second front stopper spring mounting hole is provided on the second front stopper boss 10 and along the front-to-back direction. The second front stopper spring mounting hole is a long hole. A spring stopper that slides with the second front stopper spring mounting hole is provided in the second front stopper spring mounting hole. The spring stopper is fixed relative to the right connecting plate 7. A compression spring is provided in the second front stopper spring mounting hole. The compression spring and the spring stopper are used to apply a rebound force to the second front stopper 8 toward the right connecting plate 7. When the second front stopper 8 moves away from the right connecting plate 7, the compression spring is compressed, thereby causing the second front stopper 8 to have a reset tendency. Specifically, a first rear side mounting hole is provided on the rear side surface of the left connecting plate 1. The first rear side mounting hole is a rectangular hole. A first rear stopper boss 5 is provided on the first rear stopper 3. The first rear stopper boss 5 is designed according to the hole shape of the first rear side mounting hole, with the design standard being that it can be stably inserted into the first rear side mounting hole and can form a sliding fit structure with the first rear side mounting hole. The first rear stopper boss 5 is slidably assembled in the first rear side mounting hole, so that the first rear stopper 3 can be slidably mounted on the left connecting plate 1 through the cooperation between the first rear stopper boss 5 and the first rear side mounting hole. A first rear stopper spring mounting hole is provided on the first rear stopper boss 5 and along the front-to-back direction. The first rear stopper spring mounting hole is an elongated hole. A spring stopper that slides with it (the first rear stopper spring mounting hole) is provided in the first rear stopper spring mounting hole. The spring stopper is fixed relative to the left connecting plate 1. A compression spring is provided in the first rear stopper spring mounting hole. The compression spring and the spring stopper are used to apply a rebound force to the first rear stopper 3 toward the left connecting plate 1. When the first rear stopper 3 moves away from the left connecting plate 1, the compression spring is compressed, thereby causing the first rear stopper 3 to have a reset tendency. Specifically, a second rear side mounting hole is provided on the rear side of the right connecting plate 7. The second rear side mounting hole is a rectangular hole. A second rear stopper boss 11 is provided on the second rear stopper 9. The second rear stopper boss 11 is designed according to the hole shape of the second rear side mounting hole, with the design standard being that it can be stably inserted into the second rear side mounting hole and can form a sliding fit structure with the second rear side mounting hole. The second rear stopper boss 11 is slidably assembled in the second rear side mounting hole, so that the second rear stopper 9 can be slidably installed on the right connecting plate 7 through the cooperation between the second rear stopper boss 11 and the second rear side mounting hole. A second rear stopper spring mounting hole is provided on the second rear stopper boss 11 and along the front-to-back direction. The second rear stopper spring mounting hole is an elongated hole. A spring stopper is provided in the second rear stopper spring mounting hole and slides with it (the second rear stopper spring mounting hole). The spring stopper is fixed relative to the right connecting plate 7. A compression spring is provided in the second rear stopper spring mounting hole. The compression spring and the spring stopper are used to resist each other to apply a rebound force to the second rear stopper 9 toward the right connecting plate 7.When the second rear stopper 9 moves away from the right connecting plate 7 , the compression spring is compressed so that the second rear stopper 9 has a tendency to reset.

[0041] In the present invention, the first front stop boss 4 is spaced apart from the first rear stop boss 5. An adjustment block 15 is provided between the first front stop boss 4 and the first rear stop boss 5, which is rotatable relative to the left connecting plate 1. The adjustment block 15 can abut against the first front stop boss 4 and the first rear stop boss 5, and is used to adjust the distance between the first front stop boss 4 and the first rear stop boss 5 during the rotation of the first front stop boss 4 and the first rear stop boss 5. The second front stop boss 10 is spaced apart from the second rear stop boss 11. An adjustment block 15 is provided between the second front stop boss 10 and the second rear stop boss 11, which is rotatable relative to the right connecting plate 7. The adjustment block 15 can abut against the second front stop boss 10 and the second rear stop boss 11, and is used to adjust the distance between the second front stop boss 10 and the second rear stop boss 11 during the rotation of the second front stop boss 10 and the second rear stop boss 11.

[0042] In order to ensure the smoothness of adjusting the spacing between the blocks when the adjustment block 15 contacts the blocks (including the first front block 2, the first rear block 3, the second front block 8 and the second rear block 9), the part of the adjustment block 15 used to contact the blocks is a smooth curved surface structure (the contact area between the smooth curved surface structure and the blocks is small, so the friction and sliding resistance is small) or is provided with a roller (the roller and the blocks are in rolling contact, so the friction resistance is small).

[0043] The present invention provides blocks (specifically, a first front block 2, a first rear block 3, a second front block 8, and a second rear block 9), each having a boss provided on the block, a spring mounting hole provided on the boss, and a spring provided in the spring mounting hole, so that the spring applies a reset rebound force to the block. To improve the stability of the block during reset and rebound, the present invention proposes the following structural optimization: two spring mounting holes are provided for the first front block and are spaced apart in the left-right direction; two spring mounting holes are provided for the first rear block and are spaced apart in the left-right direction; two spring mounting holes are provided for the second front block and are spaced apart in the left-right direction; and two spring mounting holes are provided for the second rear block and are spaced apart in the left-right direction.

[0044] The present invention is provided with a spring stopper, which is fixed relative to the left connecting plate 1 and the right connecting plate 7. In order to facilitate the setting of the spring stopper, the present invention provides a left gland 6 and a right gland 12. The left gland 6 and the right gland 12 are both integral metal components (i.e., the spring stopper is integrally formed on the gland). The left gland 6 is provided on the upper side of the left connecting plate 1 and fixed by screws, and the spring stopper is integrally formed on the left gland 6. The right gland 12 is provided on the upper side of the right connecting plate 7 and fixed by screws, and the spring stopper is integrally formed on the right gland 12.

[0045] In a specific embodiment of the present invention, the adjustment block 15 is a shuttle-shaped structure or an elliptical structure (regardless of whether the shuttle-shaped structure or the elliptical structure is adopted, its end is a smooth curved structure), and the adjustment block 15 is provided with a knob 16 through a connecting column (the adjustment block 15 and the connecting column and / or the knob 16 and the connecting column are threadedly connected to facilitate installation between individual components), and the connecting column is provided through the left connecting plate 1 or the right connecting plate 7.

[0046] In the present utility model, the left unit and the right unit are connected to form an integral structure. Specifically, the left connecting plate 1 is provided with a first adjustment plate 13 (a slide groove structure is provided on the first adjustment plate 13), and a plurality of first adjustment holes are provided on the first adjustment plate 13 along the left and right directions; the right connecting plate 7 is provided with a second adjustment plate 14 (the second adjustment plate 14 can be slidably assembled on the slide groove structure of the first adjustment plate 13), and a plurality of second adjustment holes are provided on the second adjustment plate 14 along the left and right directions; an adjusting bolt group is provided through the first adjusting hole and the second adjusting hole, and the distance between the left connecting plate 1 and the right connecting plate 7 is adjusted by cooperating with the adjusting bolt group and different first adjusting holes and second adjusting holes.

[0047] Specifically, the left connecting plate 1 , the first front stopper 2 , and the first rear stopper 3 are all integrated structural components; the right connecting plate 7 , the second front stopper 8 , and the second rear stopper 9 are all integrated structural components.

[0048] The utility model provides a square battery top cover welding protective cover, which is an adjustable movable component (the left unit and the right unit are movably connected, and in the left and right side units, the block and the connecting plate are movably connected), the front block and the rear block arranged on the connecting plate are both L-shaped structures (specifically, an L-shaped retaining edge structure is provided), the long side is used to block light for the plastic on the long side of the battery pole, and the short side is used to block light for the plastic on the short side of the pole, and the long sides of the front block and the rear block are provided with an extended boss on the side of the pole, and waist-shaped through holes are provided on both sides of the boss for accommodating a compression spring, a square through groove is provided in the middle of the left side of the left connecting plate 1 and the middle of the right side of the right connecting plate 7, the length and width of the groove are adapted to the length and width of the boss provided on the block, the front blocks (the first front block 2 and the second front block 8) and the rear blocks (the first rear block 3 and the second rear block The block 9) is respectively inserted into the square through grooves of the left connecting plate 1 and the right connecting plate 7, and can slide along the depth direction of the groove. There is a square hole connected to the square through groove on the lower surface (bottom) of the left connecting plate 1 and the right connecting plate 7, and a circular mounting hole is provided on the upper part of the hole. The adjusting block 15 (the adjusting block 15 is installed with a knob 16 through the connecting column, and the knob 16 is located on the upper side of the connecting plate and can rotate in one direction) is installed in the square hole and can rotate clockwise in one direction. There is a square groove in the middle of the boss of the front block and the rear block. Inside the square grooves of the left connecting plate 1 and the right connecting plate 7, the side surface of the adjusting block 15 abuts against the end faces of the square grooves of the two blocks, and the pressure cover is installed on the top of the connecting block by four bolts. The two long side sides thereof are respectively provided with bosses (spring blocks) facing the waist-shaped holes of the block, which are used to block the compression spring. Rotating the adjusting block 15 can push the front block and the rear block on both sides thereof to adjust the spacing along their relative directions. There is a square groove on the right side of the left connecting plate 1, with a row of threaded holes in the groove. There is a square boss on the left side of the right connecting plate 7, with a long waist-shaped hole on the boss. The boss is inserted into the square groove of the left connecting plate 1 and can slide along the length of the groove. After adjusting the position, the bolts are passed through the waist-shaped holes to lock and fix the left connecting plate 1 and the right connecting plate 7.

[0049] It is known from the prior art that the poles and their plastic parts need to be protected when the top cover is welded to the shell, and there are many types of existing pole protection covers, which have high manufacturing costs and are not universal. The square battery top cover welding protection cover provided by the present invention has an adjustable spacing between the left unit and the right unit, and the front block and the rear block provided on the left unit and the right unit can also be adjusted relative to the connecting plate. In the square battery top cover welding protection cover provided by the present invention, the present invention can adjust the installation position of the connecting plates on both sides according to the spacing between the two poles of the square battery, adjust the installation spacing of the front block and the rear block on both sides according to the width of the pole, and then put the protection cover on the battery cover plate to weld the top cover. The present invention has a simple structure, is easy to adjust, is easy to operate, and has good versatility. It can be adjusted and applied to square batteries of different sizes, reducing manufacturing costs.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A square battery top cover welding protective cover, characterized in that: include: A left side unit, the left side unit includes a left connecting plate, a first front stopper and a first rear stopper are provided on the left connecting plate, the first front stopper can be elastically movably provided on the front side of the left connecting plate in the front-to-back direction, the first rear stopper can be elastically movably provided on the rear side of the left connecting plate in the front-to-back direction, a first front protective surface is provided on the first front stopper, a first rear protective surface is provided on the first rear stopper, and a first side protective surface is provided on the first front stopper and / or the first rear stopper, the first front protective surface, the first rear protective surface and the first side protective surface forming a protective structure for the plastic part on the left side of the square battery top cover; A right side unit, the right side unit includes a right connecting plate, a second front stopper and a second rear stopper are provided on the right connecting plate, the second front stopper can be elastically movably provided on the front side of the right connecting plate in the front-to-back direction, the second rear stopper can be elastically movably provided on the rear side of the right connecting plate in the front-to-back direction, a second front protective surface is provided on the second front stopper, a second rear protective surface is provided on the second rear stopper, and a second side protective surface is provided on the second front stopper and / or the second rear stopper, the second front protective surface, the second rear protective surface and the second side protective surface form a protective structure for the plastic part on the right side of the square battery top cover; The left connecting plate is connected to the right connecting plate.

2. The square battery top cover welding protection cover according to claim 1, characterized in that: The first side protection surface includes a first front block side protection surface and a first rear block side protection surface, the first front protection surface and the first front block side protection surface form an L-shaped side wall structure, the first rear protection surface and the first rear block side protection surface form an L-shaped side wall structure, and the first front block side protection surface and the first rear block side protection surface can slide relative to each other; The second side protection surface includes a second front block side protection surface and a second rear block side protection surface. The second front protection surface and the second front block side protection surface form an L-shaped side wall structure. The second rear protection surface and the second rear block side protection surface form an L-shaped side wall structure. The second front block side protection surface and the second rear block side protection surface can slide relative to each other.

3. The square battery top cover welding protection cover according to claim 1, characterized in that: A first mounting groove is provided on the bottom surface of the left connecting plate, a first front side mounting hole is provided on the front side of the left connecting plate, and a first rear side mounting hole is provided on the rear side of the left connecting plate; A first front stopper is provided on the first front stopper, the first front stopper boss being slidably assembled in the first front side mounting hole, a first front stopper spring mounting hole is provided on the first front stopper boss and along the front-to-back direction, a spring stopper is provided in the first front stopper spring mounting hole and is slidably matched with the first front stopper spring mounting hole, the spring stopper is fixed relative to the left connecting plate, a compression spring is provided in the first front stopper spring mounting hole, the compression spring and the spring stopper are used to abut against each other to apply a rebound force to the first front stopper in the direction of the left connecting plate; A first rear stopper is provided on the first rear stopper, and the first rear stopper boss is slidably assembled in the first rear side mounting hole. A first rear stopper spring mounting hole is provided on the first rear stopper boss and along the front-to-rear direction. A spring stopper is provided in the first rear stopper spring mounting hole to slide with the first rear stopper spring mounting hole. The spring stopper is fixed relative to the left connecting plate. A compression spring is provided in the first rear stopper spring mounting hole. The compression spring and the spring stopper are used to abut against each other to apply a rebound force to the first rear stopper in the direction of the left connecting plate. The first front stop block boss and the first rear stop block boss are arranged at intervals, and an adjustment block that can be rotatably engaged relative to the left connecting plate is provided between the first front stop block boss and the first rear stop block boss. The adjustment block can be abutted against the first front stop block boss and the first rear stop block boss, and is used to adjust the distance between the first front stop block boss and the first rear stop block boss during its rotation.

4. The square battery top cover welding protection cover according to claim 3, characterized in that: A second mounting groove is provided on the bottom surface of the right connecting plate, a second front side mounting hole is provided on the front side of the right connecting plate, and a second rear side mounting hole is provided on the rear side of the right connecting plate; A second front stopper is provided on the second front stopper, and the second front stopper boss is slidably assembled in the second front side mounting hole. A second front stopper spring mounting hole is provided on the second front stopper boss and along the front-to-back direction. A spring stopper that slides and cooperates with the second front stopper spring mounting hole is provided in the second front stopper spring mounting hole. The spring stopper is fixed relative to the right connecting plate. A compression spring is provided in the second front stopper spring mounting hole. The compression spring and the spring stopper are used to abut against each other to apply a rebound force to the second front stopper in the direction of the right connecting plate. A second rear stopper is provided on the second rear stopper, and the second rear stopper boss is slidably assembled in the second rear side mounting hole. A second rear stopper spring mounting hole is provided on the second rear stopper boss and along the front-to-back direction. A spring stopper that slides and cooperates with the second rear stopper spring mounting hole is provided in the second rear stopper spring mounting hole. The spring stopper is fixed relative to the right connecting plate. A compression spring is provided in the second rear stopper spring mounting hole. The compression spring and the spring stopper are used to abut against each other to apply a rebound force to the second rear stopper in the direction of the right connecting plate. The second front stop block boss and the second rear stop block boss are arranged at intervals, and an adjustment block that can be rotatably engaged relative to the right connecting plate is provided between the second front stop block boss and the second rear stop block boss. The adjustment block can be abutted against the second front stop block boss and the second rear stop block boss, and is used to adjust the distance between the second front stop block boss and the second rear stop block boss during its rotation.

5. The square battery top cover welding protection cover according to claim 4, characterized in that: There are two first front stopper spring mounting holes, which are spaced apart in the left-right direction; There are two first rear stopper spring mounting holes, which are spaced apart in the left-right direction; There are two second front stopper spring mounting holes, which are spaced apart in the left-right direction; There are two second rear stopper spring mounting holes, which are spaced apart in the left-right direction.

6. The square battery top cover welding protection cover according to claim 3, characterized in that: It also includes a left side pressure cover, which is arranged on the upper side of the left connecting plate, and the spring stopper is arranged on the left side pressure cover.

7. The square battery top cover welding protection cover according to claim 3, characterized in that: It also includes a right side pressure cover, which is arranged on the upper side of the right connecting plate, and the spring stopper is arranged on the right side pressure cover.

8. The square battery top cover welding protection cover according to claim 3, characterized in that: The adjusting block is a shuttle-shaped structure or an elliptical structure, and is provided with a knob via a connecting column, and the connecting column is provided through the left connecting plate or the right connecting plate.

9. The square battery top cover welding protective cover according to any one of claims 1 to 7, characterized in that: The left connecting plate is provided with a first adjustment plate, and a plurality of first adjustment holes are provided on the first adjustment plate along the left-right direction; The right connecting plate is provided with a second adjustment plate, and a plurality of second adjustment holes are provided on the second adjustment plate along the left-right direction; An adjusting bolt group is provided through the first adjusting hole and the second adjusting hole, and the distance between the left connecting plate and the right connecting plate is adjusted by cooperating with the adjusting bolt group and the different first adjusting holes and the second adjusting holes.

10. The square battery top cover welding protection cover according to claim 1, characterized in that: The left connecting plate, the first front stopper and the first rear stopper are all integral structural parts; The right connecting plate, the second front stopper, and the second rear stopper are all integrated structural components.

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