Battery cover plate structure

Abstract

The invention discloses a battery cover plate structure, which relates to the technical field of battery cover plates, and comprises a substrate, a sealing ring, a pole, an insulating ring and a welding ring, a positioning mechanism is arranged between the insulating ring and the substrate; and the positioning mechanism is used for keeping the sealing ring in a compressed state, so that the butt joint edges of the welding ring and the base plate are aligned, and then welding seams are neat and consistent. By arranging the positioning mechanism, the sealing ring is kept in a compressed state, then when the welding ring is arranged on the insulating ring in a sleeving mode, the edge of the welding ring is just aligned with the butt joint position of the base plate, at the moment, a clamping mechanism does not need to be additionally arranged, and welding work is conducted at the moment; in the welding process, heat generated during welding is transmitted to the sealing ring, so that when the sealing ring expands, due to the arrangement of the positioning mechanism, the insulating ring and the substrate are kept in a locking state, it can still be guaranteed that welding seams between the welding ring and the substrate are aligned and consistent, and welding work cannot be affected.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cover plates, and in particular to a battery cover plate structure. Background Art

[0002] The battery is the power source that provides the power source for the tool. The battery cell in the battery usually includes a shell, a top cover and a battery cell. The battery cell is located in the shell and is encapsulated by a battery cover assembly. A sealing ring needs to be set in the cover assembly to prevent leakage and form a closed space in the battery cell.

[0003] In the prior art, after the battery cover is assembled, laser welding equipment is generally used to weld the cover to ensure the sealing of the battery cover.

[0004] Then the above-mentioned process of welding the battery cover still has the following defects:

[0005] (1) Due to the small size of the battery cover, a clamping structure is required to clamp and fix the assembled battery cover during welding to ensure the welding accuracy; at the same time, the welding work needs to be performed around the pole, and the clamping structure is easy to interfere with the welding work. Therefore, the position of the clamping structure needs to be constantly adjusted during the welding process, which affects the welding efficiency;

[0006] (2) Heat is generated during the welding process, and the sealing ring is easily expanded by heat, which causes the force of the clamping structure to change, making it difficult to control the clamping accuracy, affecting the clamping and welding work. Summary of the invention

[0007] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a battery cover structure, which is used to solve the problem proposed in the above-mentioned background technology that when the assembled battery cover is welded, the sealing ring inside the battery cover is prone to absorb heat and deform, making it difficult to accurately control the clamping force of the battery cover assembly, affecting the welding effect.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A battery cover structure comprises a base plate, a sealing ring, a pole, an insulating ring and a welding ring; the sealing ring, the pole and the insulating ring are sequentially installed in the mounting hole of the base plate, the welding ring is sleeved on the top of the insulating ring, and the welding ring is welded to the base plate; a positioning mechanism is provided between the insulating ring and the base plate; the positioning mechanism is used to keep the sealing ring in a compressed state so that the butt edges of the welding ring and the base plate are aligned, thereby making the weld neat and consistent.

[0010] Preferably, the positioning mechanism comprises a plurality of rotating blocks, a first protrusion and a torsion spring; the plurality of rotating blocks are arranged in a circumferential array along the insulating ring, and the rotating block is hinged to the insulating ring, and the first protrusion is arranged on the rotating block; a limiting groove adapted to the first protrusion is provided on the side wall of the mounting hole on the substrate; the torsion spring is arranged at the hinge position of the rotating block and the insulating ring, and the torsion spring is used to drive the first protrusion to be inserted into the limiting groove when the first protrusion is aligned with the limiting groove;

[0011] The first protrusion is provided with a first chamfer; when the insulating ring is pushed to be inserted into the mounting hole of the substrate and the first protrusion is driven to contact the substrate, the first chamfer is used to provide guidance for the misalignment between the first protrusion and the substrate.

[0012] Preferably, the battery cover structure further includes an adjusting mechanism; when welding between the welding ring and the base plate is completed, the adjusting mechanism is used to drive the first protrusion to separate from the limiting groove, so that mutual pressure is generated between the insulating ring and the welding ring.

[0013] Preferably, the adjustment mechanism includes a dislocation mechanism and a snap-on mechanism; the dislocation mechanism is arranged on the insulating ring, and the dislocation mechanism is used to drive the rotating block to rotate so that the first protrusion is separated from the limiting groove; the snap-on mechanism is arranged between the rotating block and the dislocation mechanism, and the snap-on mechanism is used to maintain the first protrusion in a state of being separated from the limiting groove.

[0014] Preferably, the dislocation mechanism comprises a plurality of push rods and a second protrusion; the number of the plurality of push rods is the same as that of the rotating block, and each of the push rods is arranged in a one-to-one correspondence with each of the rotating blocks; the push rod is slidably connected to the insulating ring, the sliding direction of the push rod is parallel to the axis of the insulating ring, and the bottom end of the push rod protrudes from the insulating ring; the second protrusion is arranged on the rotating block, the top end of the push rod abuts against the second protrusion, and the projection of the second protrusion along the length direction of the push rod partially overlaps with the push rod; the push rod drives the rotating block to rotate by pushing the second protrusion;

[0015] The ratio of the distance D1 between the contact point between the top of the push rod and the second protrusion and the hinge axis of the rotating block to the distance D2 between the first protrusion and the hinge axis of the rotating block is 1:2-4.

[0016] Preferably, the clamping mechanism comprises a telescopic shaft and a compression spring; the telescopic shaft is arranged on the rotating block, and the compression spring is sleeved on the telescopic shaft; the compression spring is used to drive the telescopic shaft to automatically reset when the telescopic shaft loses pressure; the push rod is provided with a clamping groove adapted to the outer diameter of the telescopic shaft; when the rotating block is driven to rotate by the dislocation mechanism, the telescopic shaft can be driven to be inserted into the clamping groove, so that the first protrusion maintains a state of separation from the limiting groove; a second chamfer is provided on the push rod at a position close to the clamping groove; the second chamfer is used to provide a guide for the dislocation between the clamping groove and the push rod;

[0017] The push rod is provided with a first dislocation groove; when the first protrusion is driven to be dislocated with the side wall of the mounting hole on the substrate, the first dislocation groove is used to provide a dislocation space for accommodating the card slot when the rotating block rotates; the rotating block is provided with a second dislocation groove; the second dislocation groove is used to provide a dislocation space when the rotating block rotates.

[0018] Preferably, the adjustment mechanism also includes a sealing mechanism; the sealing mechanism includes a sealing ring and a spring sheet; the bottom ends of the plurality of push rods are connected to the sealing ring, and the spring sheet is arranged between the insulating ring and the push rod; the spring sheet is a circular ring structure; when the restriction on the push rod is released, the spring sheet is used to drive the push rod to reset, so as to drive the sealing ring to be pressed against the substrate.

[0019] Preferably, a lip is provided on the substrate, and the lip is sleeved on the insulating ring; a weld is formed between the welding ring and the lip, and when the sealing ring is maintained in a compressed state by a positioning mechanism, the weld between the welding ring and the lip is made neat and consistent.

[0020] Preferably, a protrusion is provided on the inner wall of the mounting hole of the substrate, and the outer wall of the insulating ring is matched with the protrusion; the protrusion is used to prevent the insulating ring and the substrate from rotating.

[0021] Preferably, the pole and the insulating ring are integrally injection molded.

[0022] Beneficial effects of the present invention:

[0023] 1. By setting a positioning mechanism, the sealing ring is kept in a compressed state. Then, when the welding ring is placed on the insulating ring, the edge of the welding ring is just aligned with the butt joint of the substrate. At this time, there is no need to set up a clamping mechanism. At this time, welding work can be carried out. During the welding process, the heat generated during welding is transferred to the sealing ring, so that when the sealing ring expands, the insulating ring and the substrate are kept in a locked state due to the setting of the positioning mechanism, and the weld between the welding ring and the substrate can still be aligned and consistent, which will not affect the welding work.

[0024] 2. By arranging the positioning mechanism inside the insulating ring and the base plate, when the welding work needs to be welded around the pole, there will be no interference with the welding work, which is conducive to improving the welding efficiency; and the overall volume of the battery cover does not change, reducing the space occupation, which is conducive to increasing the battery energy density;

[0025] 3. By setting up an adjustment mechanism, after the welding work is completed, the first protrusion can be driven to separate from the limiting groove, so that a certain pressure is generated between the insulating ring and the welding ring, thereby achieving sealing between the insulating ring and the welding ring and ensuring the overall sealing effect of the battery cover.

[0026] 4. By setting up a sealing mechanism, setting up a sealing ring and using a spring sheet in coordination, the spring sheet pushes the sealing ring and the substrate to squeeze the sealing ring, so that a seal is formed between the bottom of the insulating ring and the substrate, further improving the overall sealing effect of the battery cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of a partial three-dimensional decomposition structure of the present invention;

[0030] Figure 3 It is a partially cutaway stereoscopic enlarged structural schematic diagram of the present invention;

[0031] Figure 4 It is a side-view enlarged structural schematic diagram of the positioning mechanism when the sealing ring of the battery cover plate is maintained in a compressed state before welding;

[0032] Figure 5 The present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0033] Figure 6 It is a side-view enlarged structural schematic diagram of the positioning mechanism of the present invention when the sealing ring is pushed for compression before welding of the battery cover plate;

[0034] Figure 7 The present invention Figure 6 Schematic diagram of the enlarged structure of the middle B area;

[0035] Figure 8 It is a three-dimensional enlarged structural schematic diagram of a partial structure of the dislocation mechanism of the present invention;

[0036] Fig. 9 It is a schematic diagram of a first-view stereoscopic magnification structure of a rotating block of the present invention;

[0037] Fig.10 It is a schematic diagram of a partially cutaway three-dimensional enlarged structure of the rotating block of the present invention from a second viewing angle;

[0038] Fig.11 It is a three-dimensional enlarged structural schematic diagram of the push rod of the present invention.

[0039] In the figure: 1. substrate; 2. sealing ring; 3. pole; 4. insulating ring; 5. lip; 6. welding ring; 7. positioning mechanism; 71. rotating block; 72. first protrusion; 73. limiting groove; 74. first chamfer; 75. torsion spring; 8. adjusting mechanism; 81. dislocation mechanism; 811. push rod; 812. second protrusion; 82. clamping mechanism; 821. telescopic shaft; 822. compression spring; 823. clamping groove; 824. second chamfer; 825. first dislocation groove; 826. second dislocation groove; 83. sealing mechanism; 831. sealing ring; 832. spring sheet; 9. raised portion. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1-11 As shown, a battery cover structure, such as Figure 1-3 As shown, a battery cover structure includes a substrate 1, a sealing ring 2, a pole 3, an insulating ring 4 and a welding ring 6; the sealing ring 2, the pole 3 and the insulating ring 4 are sequentially installed in the mounting hole of the substrate 1, the welding ring 6 is sleeved on the top of the insulating ring 4, and the welding ring 6 is welded to the substrate 1; a positioning mechanism 7 is provided between the insulating ring 4 and the substrate 1; the positioning mechanism 7 is used to keep the sealing ring 2 in a compressed state so that the butt edges of the welding ring 6 and the substrate 1 are aligned, thereby making the weld neat and consistent.

[0042] It should be noted that the pole 3 and the sealing ring 2 are clamped by the cooperation of the insulating ring 4 and the substrate 1; when the assembled battery cover needs to be welded; first, the sealing ring 2 is maintained in a compressed state through the positioning mechanism 7, and the compressed state of the sealing ring 2 is the compressed state of the sealing ring 2 when it is used for normal sealing; then when the welding ring 6 is sleeved on the insulating ring 4, the edge of the welding ring 6 is just aligned with the docking position of the substrate 1, and no additional clamping mechanism is required at this time, and welding work is carried out at this time; during the welding process, the heat generated during welding is transferred to the sealing ring 2, so that when the sealing ring 2 expands, due to the setting of the positioning mechanism 7, the insulating ring 4 and the substrate 1 are maintained in a locked state, and the weld between the welding ring 6 and the substrate 1 can still be ensured to be aligned and consistent, and will not affect the welding work; the welding work needs to be welded around the pole 3, and by setting the positioning mechanism 7 between the insulating ring 4 and the substrate 1, there will be no interference with the welding work, which is conducive to improving the welding efficiency.

[0043] like Figure 3-8As shown, the positioning mechanism 7 includes a plurality of rotating blocks 71, a first protrusion 72 and a torsion spring 75; the plurality of rotating blocks 71 are arranged in a circumferential array along the insulating ring 4, and the rotating blocks 71 are hinged to the insulating ring 4, and the first protrusion 72 is arranged on the rotating block 71; a limiting groove 73 adapted to the first protrusion 72 is provided on the side wall of the mounting hole on the substrate 1; the torsion spring 75 is provided at the hinge position between the rotating block 71 and the insulating ring 4, and the torsion spring 75 is used to drive the first protrusion 72 to be inserted into the limiting groove 73 when the first protrusion 72 is aligned with the limiting groove 73; a first chamfer 74 is provided on the first protrusion 72; when the insulating ring 4 is pushed to be inserted into the mounting hole of the substrate 1 and the first protrusion 72 is driven to contact the substrate 1, the first chamfer 74 is used to provide guidance for the misalignment between the first protrusion 72 and the substrate 1.

[0044] It should be noted that the insulating ring 4 is sleeved on the pole 3, and the pole 3 and the insulating ring 4 partially overlap along the axis projection of the pole 3. When the insulating ring 4 is pushed down, the pole 3 can be driven to drop synchronously (for example Figure 4 As shown in the figure, pushing the insulating ring 4 down means pushing the insulating ring 4 from top to bottom to move), firstly, by pushing the pole 3 and the insulating ring 4 downward, the sealing ring 2 is compressed; in the process of the insulating ring 4 moving downward, the first chamfer 74 is in conflict with the side wall of the mounting hole on the substrate 1, and as the insulating ring 4 continues to descend, the first chamfer 74 cooperates with the first protrusion 72 to rotate, so that the torsion spring 75 is compressed, and at this time, as the insulating ring 4 continues to descend, the first protrusion 72 is tightly attached to the substrate 1 under the action of the torsion spring 75 The side wall of the mounting hole is fixed until the first protrusion 72 moves to align with the limiting groove 73. Under the action of the torsion spring 75, the first protrusion 72 is driven to be inserted into the limiting groove 73. At this time, the restriction on the pole 3 and the insulating ring 4 is released, and the compressed sealing ring 2 generates an upward thrust on the pole 3, which is transmitted to the insulating ring 4 through the pole 3, so that the first protrusion 72 is tightly clamped in the limiting groove 73, thereby locking the compressed state of the sealing ring 2, so that when welding is carried out, the thermal expansion of the sealing ring 2 will not affect the welding work.

[0045] like Figure 3-8 As shown, the battery cover structure also includes an adjusting mechanism 8; when the welding between the welding ring 6 and the base plate 1 is completed, the adjusting mechanism 8 is used to drive the first protrusion 72 to separate from the limiting groove 73, so that mutual pressure is generated between the insulating ring 4 and the welding ring 6.

[0046] It should be noted that in order to ensure that there is a certain pressure between the insulating ring 4 and the welding ring 6 to achieve a sealing effect, after the welding work is completed, the first protrusion 72 is driven to separate from the limiting groove 73 through the adjustment mechanism 8, so that the compressed sealing ring 2 pushes the insulating ring 4 upward. At this time, relative sliding can occur between the insulating ring 4 and the substrate 1, so that the thrust on the insulating ring 4 can be transmitted to the welding ring 6, and then a certain pressure is generated between the insulating ring 4 and the welding ring 6, thereby achieving the sealing of the insulating ring 4 and the welding ring 6, and ensuring the overall sealing effect of the battery cover.

[0047] like Figure 3-7 As shown, the adjustment mechanism 8 includes a dislocation mechanism 81 and a snap-on mechanism 82; the dislocation mechanism 81 is arranged on the insulating ring 4, and the dislocation mechanism 81 is used to drive the rotating block 71 to rotate so that the first protrusion 72 is separated from the limiting groove 73; the snap-on mechanism 82 is arranged between the rotating block 71 and the dislocation mechanism 81, and the snap-on mechanism 82 is used to keep the first protrusion 72 separated from the limiting groove 73.

[0048] It should be noted that after the welding between the welding ring 6 and the substrate 1 is completed, it is necessary to ensure that there is a certain pressure between the insulating ring 4 and the welding ring 6 to ensure the sealing between the insulating ring 4 and the welding ring 6. At this time, by pushing the pole 3 and the insulating ring 4 downward, the sealing ring 2 is driven to continue to compress, and the dislocation mechanism 81 is driven to push the rotating block 71 to rotate, so that the first protrusion 72 is separated from the limiting groove 73. At the same time, through the setting of the clamping mechanism 82, one end of the first protrusion 72 is clamped on the dislocation mechanism 81, so that the first protrusion 72 and the limiting groove 73 maintain a separated state. At this time, the restriction on the pole 3 and the insulating ring 4 is released, and relative sliding can occur between the insulating ring 4 and the substrate 1. At this time, the compressed sealing ring 2 pushes the insulating ring 4 upward, and the thrust is transferred from the insulating ring 4 to the welding ring 6, so that pressure is generated between the insulating ring 4 and the welding ring 6, and sealing is achieved, thereby ensuring the overall sealing effect of the battery cover after welding.

[0049] like Figure 3-11 As shown, the dislocation mechanism 81 includes a plurality of push rods 811 and a second protrusion 812; the number of the plurality of push rods 811 is the same as that of the rotating block 71, and each push rod 811 is arranged one-to-one with each rotating block 71; the push rod 811 is slidably connected to the insulating ring 4, the sliding direction of the push rod 811 is parallel to the axis of the insulating ring 4, and the bottom end of the push rod 811 protrudes from the insulating ring 4; the second protrusion 812 is arranged on the rotating block 71, the top end of the push rod 811 is in contact with the second protrusion 812, and the projection of the second protrusion 812 along the length direction of the push rod 811 partially overlaps with the push rod 811; the push rod 811 drives the rotating block 71 to rotate by pushing the second protrusion 812; a first dislocation groove 825 is arranged on the push rod 811; when the first protrusion 72 is driven to be dislocated with the side wall of the mounting hole on the substrate 1, the first dislocation groove 825 is used to provide a dislocation space for accommodating the card slot 823 when the rotating block 71 rotates.

[0050] It should be noted that, in the welding state, the bottom of the push rod 811 is in conflict with the substrate 1; when the pole 3 and the insulating ring 4 are pushed downward, so that the compressed sealing ring 2 is further compressed, as the insulating ring 4 drives the rotating block 71 to move downward, the push rod 811 is restricted and remains stationary. At this time, the push rod 811 can push the second protrusion 812 on the rotating block 71 to move, thereby driving the rotating block 71 to rotate, and then driving the first protrusion 72 to separate from the limiting groove 73, thereby achieving the purpose of automatic dislocation.

[0051] like Figure 5 As shown, the ratio of the distance D1 between the contact point between the top of the push rod 811 and the second protrusion 812 to the hinge axis of the rotating block 71 and the distance D2 between the first protrusion 72 and the hinge axis of the rotating block 71 is 1:2-4; it can be understood that since D1 is much smaller than D2, according to the lever principle, when the push rod 811 moves upward a short distance, it can drive the first protrusion 72 to rotate and separate from the limiting groove 73, thereby reducing the amount of deformation of the compressed sealing ring 2 and preventing the sealing ring 2 from being over-compressed and causing permanent deformation and damage.

[0052] like Figure 3-11 As shown, the clamping mechanism 82 includes a telescopic shaft 821 and a compression spring 822; the telescopic shaft 821 is arranged on the rotating block 71, and the compression spring 822 is sleeved on the telescopic shaft 821; the compression spring 822 is used to drive the telescopic shaft 821 to automatically reset when the telescopic shaft 821 loses pressure; a clamping groove 823 adapted to the outer diameter of the telescopic shaft 821 is provided on the push rod 811; when the rotating block 71 is driven to rotate by the dislocation mechanism 81, the telescopic shaft 821 can be driven to be inserted into the clamping groove 823, so that the first protrusion 72 maintains a separation state from the limiting groove 73; a second chamfer 824 is provided on the push rod 811 at a position close to the clamping groove 823; the second chamfer 824 is used to provide a guide for the dislocation between the clamping groove 823 and the push rod 811; a second dislocation groove 826 is provided on the rotating block 71; the second dislocation groove 826 is used to provide a dislocation space when the rotating block 71 rotates.

[0053] It should be noted that when the rotating block 71 is driven to rotate by the dislocation mechanism 81 so that the first protrusion 72 is dislocated with the limiting groove 73, as the pole 3 and the insulating ring 4 are continuously pressed down, the first protrusion 72 is driven to continue to rotate, thereby driving the telescopic shaft 821 to be engaged in the engaging groove 823, so that the first protrusion 72 is positioned in a state separated from the limiting groove 73. In the process of driving the telescopic shaft 821 to engage in the engaging groove 823, when the telescopic shaft 821 conflicts with the second chamfer 824, the telescopic shaft 821 is pushed The compression spring 822 is compressed when the telescopic shaft 821 is aligned with the card slot 823, and the compression spring 822 in the compressed state pushes the telescopic shaft 821 to move, so that the telescopic shaft 821 is engaged with the card slot 823, thereby completing the locking of the rotation of the first protrusion 72; at this time, the insulating ring 4 and the substrate 1 can slide relative to each other, that is, when the restriction on the pole 3 and the insulating ring 4 is released, the sealing ring 2 in the compressed state rebounds upward, pushing the insulating ring 4 to contact with the welding ring 6, thereby achieving sealing.

[0054] like Figure 5-7 As shown, the adjustment mechanism 8 also includes a sealing mechanism 83; the sealing mechanism 83 includes a sealing ring 831 and a spring sheet 832; the bottom ends of multiple push rods 811 are connected to the sealing ring 831, and the spring sheet 832 is arranged between the insulating ring 4 and the push rod 811; the spring sheet 832 is a circular ring structure, that is, when the sealing ring 831 is in conflict with the substrate 1, a sealed isolation is formed between the insulating ring 4, the spring sheet 832, the sealing ring 831 and the substrate 1; when the restriction on the push rod 811 is released, the spring sheet 832 is used to drive the push rod 811 to reset, so as to drive the sealing ring 831 to be pressed against the substrate 1.

[0055] It should be noted that, after welding is completed, in order to ensure a pressure seal between the insulating ring 4 and the welding ring 6, the insulating ring 4 needs to slide to a certain extent, so there will be a certain gap between the bottom of the insulating ring 4 and the substrate 1. At this time, through the setting of the sealing ring 831 and the coordinated use of the spring sheet 832, the spring sheet 832 pushes the sealing ring 831 and the substrate 1 to squeeze the sealing ring 831, so that a seal is formed between the bottom of the insulating ring 4 and the substrate 1, thereby further improving the overall sealing effect of the battery cover.

[0056] like Figure 1-3 As shown, a lip 5 is provided on the substrate 1, and the lip 5 is sleeved on the insulating ring 4; a weld is formed between the welding ring 6 and the lip 5, and when the sealing ring 2 is maintained in a compressed state by the positioning mechanism 7, the weld between the welding ring 6 and the lip 5 is made neat and consistent.

[0057] It should be noted that, by setting the lip 5, the weld between the welding ring 6 and the lip 5 is set upward, which facilitates the laser welding work and improves the welding convenience.

[0058] like Figure 1-3As shown, a protrusion 9 is provided on the inner wall of the mounting hole of the substrate 1, and the outer wall of the insulating ring 4 is matched with the protrusion 9; the protrusion 9 is used to prevent the insulating ring 4 and the substrate 1 from rotating; it can be understood that by setting the protrusion 9, the insulating ring 4 and the substrate 1 can be prevented from rotating, and the sealing ring 2 will not be subjected to force and distortion due to the rotation between the insulating ring 4 and the substrate 1, thereby affecting the sealing performance; the pole 3 and the insulating ring 4 are integrally injection molded; it can be understood that the pole 3 and the insulating ring 4 are integrally injection molded, which can prevent the pole 3 and the insulating ring 4 from rotating, and the sealing ring 2 between the pole 3 and the insulating ring 4 will not be subjected to force and distortion due to the rotation between the pole 3 and the insulating ring 4, thereby affecting the sealing performance.

[0059] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A battery cover structure, comprising a base plate (1), a sealing ring (2), a pole (3), an insulating ring (4) and a welding ring (6); the sealing ring (2), the pole (3) and the insulating ring (4) are sequentially installed in the installation hole of the base plate (1), the welding ring (6) is sleeved on the top of the insulating ring (4), and the welding ring (6) is welded to the base plate (1); characterized in that: A positioning mechanism (7) is provided between the insulating ring (4) and the base plate (1); the positioning mechanism (7) is used to maintain the sealing ring (2) in a compressed state so that the butt edges of the welding ring (6) and the base plate (1) are aligned, thereby making the welding seam neat and consistent.

2. A battery cover structure according to claim 1, characterized in that: The positioning mechanism (7) comprises a plurality of rotating blocks (71), a first protrusion (72) and a torsion spring (75); the plurality of rotating blocks (71) are arranged in a circumferential array along the insulating ring (4), and the rotating blocks (71) are hinged to the insulating ring (4), and the first protrusion (72) is arranged on the rotating block (71); a limiting groove (73) adapted to the first protrusion (72) is provided on the side wall of the mounting hole on the substrate (1); the torsion spring (75) is arranged at the hinge position between the rotating block (71) and the insulating ring (4), and the torsion spring (75) is used to drive the first protrusion (72) to be inserted into the limiting groove (73) when the first protrusion (72) is aligned with the limiting groove (73); The first protrusion (72) is provided with a first chamfer (74); when the insulating ring (4) is pushed to be inserted into the mounting hole of the substrate (1), driving the first protrusion (72) to come into contact with the substrate (1), the first chamfer (74) is used to provide guidance for the misalignment between the first protrusion (72) and the substrate (1).

3. A battery cover structure according to claim 1, characterized in that: The battery cover structure also includes an adjustment mechanism (8); when the welding between the welding ring (6) and the base plate (1) is completed, the adjustment mechanism (8) is used to drive the first protrusion (72) to separate from the limiting groove (73), so that mutual pressure is generated between the insulating ring (4) and the welding ring (6).

4. A battery cover structure according to claim 3, characterized in that: The adjustment mechanism (8) comprises a dislocation mechanism (81) and a clamping mechanism (82); the dislocation mechanism (81) is arranged on the insulating ring (4), and the dislocation mechanism (81) is used to drive the rotating block (71) to rotate so that the first protrusion (72) is separated from the limiting groove (73); the clamping mechanism (82) is arranged between the rotating block (71) and the dislocation mechanism (81), and the clamping mechanism (82) is used to keep the first protrusion (72) separated from the limiting groove (73).

5. A battery cover structure according to claim 4, characterized in that: The dislocation mechanism (81) comprises a plurality of push rods (811) and a second protrusion (812); the number of the plurality of push rods (811) is the same as the number of the rotating block (71), and each push rod (811) is arranged in a one-to-one correspondence with each rotating block (71); the push rod (811) is slidably connected to the insulating ring (4), the sliding direction of the push rod (811) is parallel to the axis of the insulating ring (4), and the bottom end of the push rod (811) protrudes from the insulating ring (4); the second protrusion (812) is arranged on the rotating block (71), the top end of the push rod (811) abuts against the second protrusion (812), and the projection of the second protrusion (812) along the length direction of the push rod (811) partially overlaps with the push rod (811); the push rod (811) drives the rotating block (71) to rotate by pushing the second protrusion (812); The ratio of the distance D1 between the contact point between the top of the push rod (811) and the second protrusion (812) to the hinge axis of the rotating block (71) and the distance D2 between the first protrusion (72) and the hinge axis of the rotating block (71) is 1:2-4.

6. A battery cover structure according to claim 5, characterized in that: The clamping mechanism (82) comprises a telescopic shaft (821) and a compression spring (822); the telescopic shaft (821) is arranged on the rotating block (71), and the compression spring (822) is sleeved on the telescopic shaft (821); the compression spring (822) is used to drive the telescopic shaft (821) to automatically reset when the telescopic shaft (821) loses pressure; the push rod (811) is provided with a clamping groove (821) adapted to the outer diameter of the telescopic shaft (821). 3); when the rotating block (71) is driven to rotate by the dislocation mechanism (81), the telescopic shaft (821) can be driven to be inserted into the slot (823), so that the first protrusion (72) maintains a separation state from the limiting slot (73); a second chamfer (824) is provided on the push rod (811) at a position close to the slot (823); the second chamfer (824) is used to provide a guide for the dislocation between the slot (823) and the push rod (811); The push rod (811) is provided with a first dislocation groove (825); when the first protrusion (72) is driven to be dislocated with the side wall of the mounting hole on the base plate (1), the first dislocation groove (825) is used to provide a dislocation space for accommodating the card slot (823) when the rotating block (71) rotates; the rotating block (71) is provided with a second dislocation groove (826); the second dislocation groove (826) is used to provide a dislocation space when the rotating block (71) rotates.

7. A battery cover structure according to claim 5, characterized in that: The adjustment mechanism (8) further comprises a sealing mechanism (83); the sealing mechanism (83) comprises a sealing ring (831) and a spring sheet (832); the bottom ends of the plurality of push rods (811) are connected to the sealing ring (831), and the spring sheet (832) is arranged between the insulating ring (4) and the push rod (811); the spring sheet (832) is a circular ring structure; when the restriction on the push rod (811) is released, the spring sheet (832) is used to drive the push rod (811) to reset, so as to drive the sealing ring (831) to be pressed against the substrate (1).

8. A battery cover structure according to claim 1, characterized in that: The substrate (1) is provided with a lip (5), and the lip (5) is sleeved on the insulating ring (4); a weld is formed between the welding ring (6) and the lip (5), and when the sealing ring (2) is maintained in a compressed state by a positioning mechanism (7), the weld between the welding ring (6) and the lip (5) is made neat and consistent.

9. A battery cover structure according to claim 1, characterized in that: A protrusion (9) is provided on the inner wall of the mounting hole of the base plate (1), and the outer wall of the insulating ring (4) is matched with the protrusion (9); the protrusion (9) is used to prevent the insulating ring (4) and the base plate (1) from rotating.

10. A battery cover structure according to claim 1, characterized in that: The pole (3) and the insulating ring (4) are integrally formed by injection molding.

Images