Battery top cover assembly

Abstract

The utility model discloses a battery top cover assembly and relates to the technical field of batteries. Comprising a battery top cover and a pole, the pole is mounted on the battery top cover, insulating sleeves are arranged between the pole and the battery top cover at intervals, and reinforcing parts are further arranged in weld line areas of the insulating sleeves and used for increasing the structural strength of the weld line areas. According to the battery top cover assembly disclosed by the utility model, the reinforcing part is arranged in the weld line area of the insulating sleeve, so that the structural strength of the weld line area is enhanced, the insulating sleeve is prevented from being pressed and broken, and the use safety of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery top cover assembly. Background Art

[0002] At present, when installing the pole on the battery top cover, technicians will also put a plastic ring around the pole to insulate and isolate the pole and the battery top cover to prevent the pole from directly contacting the battery top cover and causing leakage.

[0003] Among them, in order to adapt to the needs of industrial production of batteries, existing plastic rings are usually manufactured using an injection molding process. The specific operation method is: place the pole in an injection mold, and inject flowing plastic into the injection mold through the injection hole until the flowing plastic fills the gap between the mold and the pole. After the flowing plastic cools and solidifies, it becomes a plastic ring that is sleeved on the outside of the pole and used to isolate the top cover and the pole.

[0004] However, when the flowing plastic is injected from the injection port and converges and welds on the other side farther away from the injection port, a corresponding weld line area will appear on the molded plastic ring. The structural strength of the weld line area is much lower than the strength of the main body, causing the plastic ring to easily break here, and then causing the pole and the top cover to contact at the broken position of the plastic ring, causing battery safety problems. Utility Model Content

[0005] The utility model provides a battery top cover assembly, in which a reinforcement portion is provided in the weld line area of ​​the insulating sleeve to enhance the structural strength of the weld line area, prevent the insulating sleeve from being ruptured under pressure, improve the safety of battery use, and solve the above technical problems.

[0006] The technical solution of the utility model to solve the above-mentioned problem is: providing a battery top cover assembly, comprising a battery top cover, a pole, and an insulating sleeve, wherein the pole is mounted on the battery top cover, and the insulating sleeve isolates the pole and the battery top cover (1) to form electrical insulation, and a reinforcement portion is further provided in the weld line area of ​​the insulating sleeve, and the reinforcement portion is used to increase the structural strength of the weld line area.

[0007] Furthermore, the non-weld line area of ​​the insulating sleeve is also provided with a reinforcement portion, and multiple reinforcement portions are evenly distributed around the center of the insulating sleeve, so that the insulating sleeve remains balanced when installed between the pole and the battery top cover.

[0008] Furthermore, the height of the reinforcement portion is greater than the height of the insulation sleeve.

[0009] Furthermore, a pole mounting hole is provided on the battery top cover, the pole is inserted into the pole mounting hole, and a limiting structure for fixing the pole and the insulating sleeve is also provided at the pole mounting hole.

[0010] Furthermore, a pole mounting plate is provided on the pole; the limiting structure includes a limiting step provided in the pole mounting hole, and a limiting block provided at the upper end opening of the pole mounting hole, and the limiting step and the limiting block cooperate with each other to simultaneously clamp the pole mounting plate and the insulating sleeve provided on the pole mounting plate.

[0011] Furthermore, the limiting baffle is a rivet edge provided at the upper end opening of the pole mounting hole; when the pole is not assembled on the battery top cover, the rivet edge is in an upright position, and when the pole and the insulating sleeve are assembled on the battery top cover, the rivet edge is in a horizontal position, and the horizontal rivet edge cooperates with the limiting step to clamp and fix the pole and the insulating sleeve.

[0012] Furthermore, the cross-section of the insulating sleeve is a transversely arranged "U" shape, and the insulating sleeve is sleeved on the pole mounting plate to insulate and isolate the pole mounting plate and the limiting step downward, insulate and isolate the limiting baffle and the pole mounting plate upward, and insulate and isolate the pole mounting plate and the pole mounting hole wall, thereby insulating and isolating the battery top cover and the pole.

[0013] Furthermore, it also includes an annular pressure plate, which is arranged above the insulating sleeve, and a limiting portion is provided at the outer edge of the annular pressure plate. The limiting baffle and the pole mounting plate fix the annular pressure plate by clamping the limiting portion, thereby pressing the annular pressure plate downward to fix the pole and the insulating sleeve.

[0014] Furthermore, a limiting groove is provided on the limiting step, and a limiting protrusion adapted to the limiting groove is provided on the lower end surface of the limiting portion; when the annular pressure plate is fixedly clamped, the limiting protrusion is also inserted into the limiting groove to limit the rotation of the annular pressure plate.

[0015] Furthermore, it also includes a notch provided on the annular pressure plate, the notch is of a size comparable to the reinforcing portion, and the reinforcing portion is exposed from the notch so as to reduce the installation height of the annular pressure plate.

[0016] Furthermore, it also includes a sealing gasket arranged between the limiting step and the pole mounting plate.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a battery top cover assembly, which effectively strengthens the structural strength of the insulating sleeve in the weld line area by providing a thick reinforcement portion in the weld line area of ​​the insulating sleeve, thereby preventing the insulating sleeve from cracking in the weld line area, maintaining a long-term insulation isolation state between the pole and the battery top cover, and improving the safety of battery use.

[0019] In addition, by arranging an annular pressure plate above the insulating sleeve and opening a corresponding notch on the annular pressure plate to expose the reinforcement part, the annular pressure plate and the limiting step cooperate with each other to clamp and fix the insulating sleeve and the pole, and can also prevent the reinforcement part from pushing the annular pressure plate upward, thereby causing the height of the battery top cover assembly to increase at the pole installation position, thereby avoiding an increase in the battery installation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0021] Figure 1 This is an exploded view of the overall structure of the battery top cover assembly of this embodiment;

[0022] Figure 2 This is an overall structural diagram of the battery top cover assembly of this embodiment;

[0023] Figure 3 is a cross-sectional view of the battery top cover assembly of this embodiment;

[0024] Figure 4 for Figure 3 A partial enlarged view of

[0025] Figure 5 This is a structural diagram of the battery top cover of this embodiment;

[0026] Figure 6 for Figure 5 A partial enlarged view of B;

[0027] Figure 7 This is a structural diagram of the annular pressure plate of this embodiment;

[0028] 1-battery top cover, 11-pole mounting hole, 12-limiting step, 13-limiting baffle, 14-limiting groove;

[0029] 2-pole, 21-pole mounting plates;

[0030] 3-Insulation sleeve;

[0031] 4-Reinforcement section;

[0032] 5-annular pressure plate, 51-limiting portion, 52-limiting protrusion, 53-notch;

[0033] 6-Sealing gasket. DETAILED DESCRIPTION

[0034] In this specification, directional terms such as up, down, left, right, front, back, front, back, top, and bottom, which are mentioned or may be mentioned, are defined relative to the configurations shown in the accompanying drawings. The terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these or other directional terms should not be construed as restrictive.

[0035] See also Figures 1 to 7 A battery top cover assembly according to a specific embodiment of the present invention includes a battery top cover 1 and a pole 2. Both ends of the battery top cover 1 are provided with pole mounting holes 11. The poles 2 include a positive pole and a negative pole. The positive pole and the negative pole are respectively installed at the pole mounting holes 11 at both ends of the battery top cover 1 in the same installation manner, and an insulating sleeve 3 is provided between the positive pole and the battery top cover 1 and between the negative pole and the battery top cover 1. The insulating sleeve 3 is spaced between the positive pole and the wall of the pole mounting hole 11 to prevent the positive pole from electrically contacting the battery top cover 1. The insulating sleeve 3 is also spaced between the negative pole and the wall of the pole mounting hole 11 to prevent the negative pole from electrically contacting the battery top cover 1 to prevent battery leakage.

[0036] It should be noted that: in this embodiment, since the positive electrode column and the negative electrode column are installed on the battery top cover 1 in exactly the same way, and neither the positive electrode column nor the negative electrode column has any effect on the structural form of the insulating sleeve 3, nor does it cause the insulating sleeve 3 to be installed on the positive electrode column and the negative electrode column respectively. There is no difference, therefore, the inventor will no longer distinguish between the positive electrode column and the negative electrode column in the subsequent description, but will uniformly describe the technical solution of this embodiment as the electrode column 2.

[0037] Furthermore, in this embodiment, since the insulating sleeve 3 is injection molded and a weld line area is generated during the injection molding of the insulating sleeve 3, in order to prevent the weld line area from becoming the area with the lowest structural strength on the insulating sleeve 3, a larger mold cavity is separately provided at the position corresponding to the weld line area on the injection mold. In this way, the injection molded plastic liquid can be further accumulated in the weld line area to form a reinforcing portion 4 with a relatively large thickness, thereby improving the structural strength of the insulating sleeve 3 in the weld line area, so as to effectively prevent the insulating sleeve 3 from breaking in the weld line area and causing the pole 2 to be electrically connected to the battery top cover 1.

[0038] In addition, when installing the insulating sleeve 3, in order to prevent the weld line area of ​​the insulating sleeve 3 from bulging upward due to the reinforcement part 4 and to prevent the insulating sleeve 3 from being installed at an angle, three reinforcement parts 4 are further provided in the non-weld line area of ​​the insulating sleeve 3, and the reinforcement parts 4 of the three non-weld line areas and the reinforcement parts 4 of the weld line area are evenly distributed around the center of the insulating sleeve 3; and the reinforcement parts 4 of the non-weld line area are also injection molded together with the insulating sleeve 3.

[0039] Furthermore, in this embodiment, the pole 2 is installed in the pole mounting hole 11 in a plug-in manner, and a limiting structure for simultaneously fixing the pole 2 and the insulating sleeve 3 is also provided at the pole mounting hole 11 .

[0040] Specifically, a circular limiting step 12 is provided at the lower end of the pole mounting hole 11, and a limiting block 13 with an annular structure is provided at the upper end. At the same time, an annular pole mounting plate 21 is also provided on the side wall of the pole 2. When the pole 2 is inserted into the pole mounting hole 11, the lower end of the pole 2 extends downward from the through hole in the middle of the limiting step 12, and the upper end extends upward outside the pole mounting hole 11. The limiting step 12 and the limiting block 13 are respectively positioned one below and one above to fix the pole 2 by clamping the limiting pole mounting plate 21.

[0041] It should be noted that in this embodiment, the stopper 13 is a riveted edge. When inserting the pole 2 downward into the pole mounting hole 11, a technician can manually bend the stopper 13 to a vertically upward position, so that the pole mounting plate 21 can move downward to a position close to the stop step 12. When the pole 2 is installed in place, the technician can manually bend the stopper 13 to a horizontal position toward the center of the pole mounting hole 11, so that the stopper 13 can form a stopper structure above the pole mounting plate 21, thereby preventing the pole 2 from falling upward from the pole mounting hole 11.

[0042] Furthermore, in this embodiment, the insulating sleeve 3 has a transversely arranged "U"-shaped cross-section. This allows the insulating sleeve 3 to be positioned around the outside of the pole mounting plate 21 via the groove structure within its inner ring, without separating from the pole 2. Furthermore, technicians can further bend the retaining plate 13 to a position that presses against the outer upper end surface of the insulating sleeve 3. This allows the retaining plate 13 to engage with the retaining step 12 to clamp the pole 2, effectively isolating the retaining plate 13 from the pole 2.

[0043] Furthermore, in order to ensure the fastening effect of the limit baffle 13 on the pole 2 and the insulating sleeve and to prevent the reinforcement part 4 from affecting the fastening effect of the limit baffle 13, an annular pressure plate 5 is further provided above the insulating sleeve 3. The annular pressure plate 5 is similar to a bottle cap, but a hole for exposing the pole 2 is provided in the middle of the upper end of the annular pressure plate 5, and notches 53 corresponding to the four reinforcement parts 4 are also opened at the edge of the hole. The notches 53 are of the same size as the reinforcement parts 4. The lower end of the annular pressure plate 5 also extends outward to form a limiting portion 51, which is an annular ring piece. Correspondingly, the technician can press the annular pressure plate 5 onto the upper end of the pole 2, and the reinforcement part 4 can be exposed from the notch 53 to reduce the installation height of the pole 2; in addition, the technician can also press the limiting part 51 downward by making the limiting block 13 so that the limiting block 13 can cooperate with the limiting step 12 to clamp and fix the pole 2 while avoiding the reinforcement part 4 on the insulating sleeve 3, so as to prevent the raised part of the reinforcement part 4 from affecting the downward bending of the limiting block 13 and the fixing effect of the limiting block 13.

[0044] Moreover, the insulating sleeve 3 is further formed with an annular protrusion upwards, which is used to isolate the hole wall at the upper end of the annular pressing plate 5 from the pole 2 to further prevent the annular pressing plate 5 from conductive contact with the pole 2.

[0045] Furthermore, in this embodiment, a plurality of cylindrical limiting grooves 14 are evenly distributed around the limiting step 12, and a limiting protrusion 52 is correspondingly provided at the lower end surface of the limiting portion 51, which protrudes downward and is used to adapt to the limiting groove 14; correspondingly, when the annular pressure plate 5 is fixedly clamped, the limiting protrusion 52 is also inserted into the limiting groove 14 to limit the rotation of the annular pressure plate 5.

[0046] In addition, a sealing gasket 6 is also provided at the lower end of the pole 2. After the pole 2 is installed in place, the sealing gasket 6 is exactly spaced between the limiting step 12 and the pole mounting plate 21 to form a sealing structure at the lower end of the pole 2 to avoid liquid leakage at the pole mounting hole 11.

[0047] Any matters not mentioned above are applicable to the prior art.

[0048] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery top cover assembly, characterized in that: The battery comprises a battery top cover (1), a pole (2), and an insulating sleeve (3), wherein the pole (2) is mounted on the battery top cover (1), and the insulating sleeve (3) isolates the pole (2) and the battery top cover (1) to form electrical insulation, and a reinforcing portion (4) is further provided in the weld line region of the insulating sleeve (3), and the reinforcing portion (4) is used to increase the structural strength of the weld line region.

2. The battery top cover assembly according to claim 1, wherein: The non-weld line region of the insulating sleeve (3) is also provided with a reinforcement portion (4), and a plurality of reinforcement portions (4) are evenly distributed around the center of the insulating sleeve (3) so that the insulating sleeve (3) maintains balance when installed between the pole (2) and the battery top cover (1).

3. The battery top cover assembly according to claim 1, wherein: The height of the reinforcement portion (4) is greater than the height of the insulating sleeve (3).

4. The battery top cover assembly according to claim 1, wherein: The battery top cover (1) is provided with a pole mounting hole (11), the pole (2) is inserted into the pole mounting hole (11), and a limiting structure for fixing the pole (2) and the insulating sleeve (3) is also provided at the pole mounting hole (11).

5. The battery top cover assembly according to claim 4, wherein: The pole (2) is provided with a pole mounting plate (21); the limiting structure comprises a limiting step (12) provided in the pole mounting hole (11), and a limiting block piece (13) provided at the upper end opening of the pole mounting hole (11); the limiting step (12) and the limiting block piece (13) cooperate with each other to simultaneously clamp the pole mounting plate (21) and the insulating sleeve (3) provided on the pole mounting plate (21).

6. The battery top cover assembly according to claim 5, wherein: The limiting baffle (13) is a rivet edge provided at the upper end opening of the pole mounting hole (11); when the pole (2) is not mounted on the battery top cover (1), the rivet edge is in an upright position; when the pole (2) and the insulating sleeve (3) are mounted on the battery top cover (1), the rivet edge is in a horizontal position; the rivet edge in the horizontal position cooperates with the limiting step (12) to clamp and fix the pole (2) and the insulating sleeve (3).

7. The battery top cover assembly according to claim 5, wherein: The cross section of the insulating sleeve (3) is a transversely arranged "U" shape. The insulating sleeve (3) is sleeved on the pole mounting plate (21) to insulate and isolate the pole mounting plate (21) and the limiting step (12) downwardly, to insulate and isolate the limiting baffle (13) and the pole mounting plate (21) upwardly, and to insulate and isolate the pole mounting plate (21) and the wall of the pole mounting hole (11), thereby insulating and isolating the battery top cover (1) and the pole (2).

8. The battery top cover assembly according to claim 7, wherein: The annular pressure plate (5) is also included. The annular pressure plate (5) is arranged above the insulating sleeve (3), and a limiting portion (51) is provided at the outer edge of the annular pressure plate (5). The limiting block (13) and the pole mounting plate (21) fix the annular pressure plate (5) by clamping the limiting portion (51), thereby causing the annular pressure plate (5) to press downward to fix the pole (2) and the insulating sleeve (3).

9. The battery top cover assembly according to claim 8, wherein: A limiting groove (14) is provided on the limiting step (12), and a limiting protrusion (52) adapted to the limiting groove (14) is provided on the lower end surface of the limiting portion (51); when the annular pressure plate (5) is fixedly clamped, the limiting protrusion (52) is also inserted into the limiting groove (14) to limit the rotation of the annular pressure plate (5).

10. The battery top cover assembly according to claim 8, wherein: It also includes a notch (53) provided on the annular pressure plate (5), the notch (53) being of a size comparable to the reinforcing portion (4), and the reinforcing portion (4) being exposed from the notch (53) so as to reduce the installation height of the annular pressure plate (5).

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