A new energy battery cover airtightness inspection device

Abstract

The present invention discloses a new energy battery cover airtightness inspection device. It includes an upper template, an upper mold sealing ring, a guide column, a guide sleeve, a lower mold sealing ring and a lower template; the square groove at the bottom end of the upper template is bonded with the upper mold sealing ring, and forms an air-filled cavity with the surface of the inner mold base pressed on the battery cover; the guide column cooperates with the guide sleeve installed in the lower template to form the positioning and limiting of the battery cover clamped by the upper template and the lower template; the lower template is provided with a cavity according to the inspected area of ​​the battery cover, and the bottom surface of the top groove of each cavity is bonded with the lower mold sealing ring, and forms a closed air outlet cavity with the support under the surface of the outer mold base of the battery cover. The present invention ensures the overlap of the substrate of the battery cover with the positioning reference to ensure the overall flatness and consistency of the battery cover, thereby fully solving the problem of the insufficiency of the prior art affecting the airtightness of the battery cover.

Description

Technical Field

[0001] The invention relates to an airtightness testing device, and in particular to an airtightness testing device for a new energy battery cover. Background Art

[0002] With the explosive growth in the production and sales of new energy vehicles, the demand for key components of new energy vehicles, power batteries, is also increasing, and at the same time, the safety and quality requirements for batteries are becoming more and more stringent. Among them, the quality requirements for the riveting of the positive and negative components of the battery cover and the laser welding of the explosion-proof plate are getting higher and higher. At present, the battery cover manufacturing process has many processes and the production line is long. It is difficult to control the deformation caused by the manufacturing process. Generally, it is necessary to increase the full inspection and off-line shaping to obtain the qualified status of the product; especially the airtight detection process of the battery cover. If the airtight detection device of the battery cover cannot ensure the flatness of the battery cover substrate, even if the riveting of the positive and negative components of the battery cover and the laser welding quality of the explosion-proof plate are qualified, it will also affect the sealing of the battery cover.

[0003] Therefore, it is necessary to invent a new energy battery cover airtightness inspection device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle battery cover airtightness inspection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new energy battery cover airtightness inspection device. It includes an upper template and a lower template, wherein the upper template is located on the upper part of the lower template, and is characterized in that: a connection port is provided in the middle of the upper end surface of the upper template; an intermediate cavity is provided on the lower end surface of the connection port; a guide column mounting hole is provided on one side of the lower end surface of the upper template, and a guide column is installed in the guide column mounting hole; the upper end surface of the lower template has a positive electrode cavity, a sealing aluminum sheet cavity, an explosion-proof disk cavity, and a negative electrode cavity; the positive electrode cavity and the negative electrode cavity are respectively located on both sides of the upper end surface of the lower template; the explosion-proof disk cavity is located at the center of the upper end surface of the lower template; the sealing aluminum sheet cavity is located on one side of the explosion-proof disk cavity and is adjacent to the positive electrode cavity; a guide sleeve mounting hole is provided on one side of the upper end surface of the lower template; a guide sleeve is installed in the guide sleeve mounting hole.

[0006] Furthermore, there are two guide column mounting holes, which are located on both sides of the central symmetry line of the middle cavity; there are two guide columns, which are connected to the guide column mounting holes by interference fit; the cylindrical hole of the middle cavity is respectively connected to the connection port and the stop frame avoidance groove of the battery cover; one end of the rectangular avoidance groove of the stop frame of the battery cover is connected to the bottom cylindrical hole of the middle cavity, and the other end is directly connected to the bottom surface of the upper template; there is a bottom square recessed groove at the intersection of the rectangular avoidance groove and the bottom surface of the upper template; the upper mold sealing ring is installed in the bottom square recessed groove.

[0007] Furthermore, the upper end surface of the lower template has a top square groove; the guide sleeve mounting holes have two holes, which are symmetrical on both sides of the central symmetry line of the explosion-proof disk cavity, and are interference fit with the guide sleeve, and their depth is equal to the height of the guide sleeve; the positive electrode cavity has a positive electrode groove at the top and a positive electrode screw hole at the bottom; the sealing aluminum sheet cavity has a sealing aluminum sheet groove at the top and a sealing aluminum sheet screw hole at the bottom; the explosion-proof disk cavity has an explosion-proof disk groove at the top and an explosion-proof disk screw hole at the bottom; the negative electrode cavity is provided with a negative electrode groove at the top and a negative electrode screw hole at the bottom.

[0008] Furthermore, the width and depth of the positive electrode cavity and the negative electrode cavity are consistent, but the lengths are different.

[0009] Furthermore, the lower mold sealing ring is composed of a sealing ring rectangular outer frame, a first middle partition, a second middle partition, a third middle partition, a fourth middle partition and a fifth middle partition, which are correspondingly installed on the bottom surface of the top square sink groove; the bottom of the lower mold sealing ring is in contact with the bottom surfaces of the positive electrode sink groove, the sealing aluminum sheet sink groove, the explosion-proof sheet sink groove and the negative electrode sink groove.

[0010] Furthermore, there are three connecting threaded holes at the bottom end of the connecting port, which are evenly distributed at the center of the connecting port.

[0011] Furthermore, the bottom surface of the lower template is provided with four mounting screw holes, which are symmetrically distributed at the center hole position of the explosion-proof disk cavity.

[0012] Furthermore, the depth of the square groove at the bottom is two-thirds of the thickness (or diameter) of the sealing ring, and the four corners of the square are in the shape of cylindrical process grooves.

[0013] Furthermore, the depth of the top square groove is two-thirds of the thickness (or diameter) of the sealing ring, and the four corners of the square are in the shape of cylindrical process grooves.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention is composed of an upper template and a lower template, and has a simple structure, low cost and strong feasibility. The upper template and the lower template are formed to jointly clamp the battery cover plate for positioning and limiting by the cooperation of the guide column and the guide sleeve, thereby ensuring the overall flatness and consistency of the battery cover plate, saving time and labor. Anti-reverse is achieved by the different lengths of the positive electrode cavity and the negative electrode cavity, making it convenient to place the battery cover plate to be inspected. The lower mold sealing ring is installed in the lower mold sink groove to prevent the inspected battery cover plate from being compressed and deformed when the inflation cavity is inflated, thereby ensuring that the battery cover plate is protected and has no variation during the airtight inspection process, with high repetition accuracy. By configuring robot operation and automatic detection system, the working time of airtight inspection can be greatly shortened, and the production efficiency is doubled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a front cross-sectional view of the present invention.

[0017] Figure 2 It is a front cross-sectional view containing formulas of the present invention.

[0018] Figure 3 It is a schematic diagram of the top axial view of the upper template of the present invention.

[0019] Figure 4 It is a schematic diagram of the upper template of the present invention when viewed from the bottom.

[0020] Figure 5 It is a bottom view of the lower template of the present invention.

[0021] Figure 6 It is a top view of the lower template of the present invention.

[0022] In the figure: 1, upper mold plate; 2, upper mold sealing ring; 3, guide pillar; 4, guide sleeve; 5, lower mold sealing ring; 6, lower mold plate; 11, middle cavity; 111, connection port; 12, guide pillar mounting hole; 13, connection threaded hole; 113, rectangular avoidance groove; 114, bottom square sink groove; 61, positive electrode cavity; 62, sealing aluminum sheet cavity; 63, explosion-proof sheet cavity; 64, negative electrode cavity; 65, guide sleeve mounting hole; 68, top square sink groove; 69, mounting screw hole; 611, positive top sink groove; 621, sealing aluminum sheet top sink groove Groove; 631, top groove of explosion-proof plate; 641, top groove of negative electrode; 613, bottom screw hole of positive electrode; 623, bottom screw hole of sealing aluminum sheet; 633, bottom screw hole of explosion-proof plate; 643, bottom screw hole of negative electrode; 50, rectangular outer frame of sealing ring; 51, first partition; 52, second partition; 53, third partition; 54, fourth partition; 55, fifth partition; 01, inflation cavity; 02, negative electrode outlet cavity; 03, explosion-proof plate outlet cavity; 04, sealing aluminum sheet outlet cavity; 05, positive electrode outlet cavity. DETAILED DESCRIPTION

[0023] 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.

[0024] The present invention provides a new energy battery cover airtightness inspection device as shown in the figure, comprising an upper template 1 and a lower template 6, wherein the upper template 1 is located on the upper part of the lower template 6, and is characterized in that: a connection port 111 is arranged in the middle of the upper end surface of the upper template 1; an intermediate cavity 11 is arranged on the lower end surface of the connection port 111; a guide column mounting hole 12 is arranged on one side of the lower end surface of the upper template 1, and a guide column 3 is installed in the guide column mounting hole 12; a positive electrode cavity 61, a sealing aluminum sheet cavity 62, an explosion-proof disk cavity 63, and a negative electrode cavity 64 are arranged on the upper end surface of the lower template 6; the positive electrode cavity 61 and the negative electrode cavity 64 are respectively located on both sides of the upper end surface of the lower template 6; the explosion-proof disk cavity 63 is located at the center of the upper end surface of the lower template 6; the sealing aluminum sheet cavity 62 is located on one side of the explosion-proof disk cavity 63 and is adjacent to the positive electrode cavity 61; a guide sleeve mounting hole 65 is arranged on one side of the upper end surface of the lower template 6; a guide sleeve 4 is installed in the guide sleeve mounting hole 65.

[0025] Further, in the above technical solution, there are two guide post mounting holes 12, which are located on both sides of the central symmetry line of the middle cavity 11; there are two guide posts 3, which are connected with the guide post mounting holes 12 by interference fit; the height calculation formula of the guide post 3 is: H-t1=h1+h2+h3-t1, where h1 is the depth of the guide post mounting hole 12, h2 is the mold clearance between the upper template 1 and the lower template 6, h3 is the depth of the guide sleeve mounting hole equal to the height of the guide sleeve 4, t1 is the gap between the lower end surface of the guide post 3 and the bottom end of the guide sleeve mounting hole 65 after the upper template 1 and the lower template 6 are molded, when the mold clearance h2 between the upper template 1 and the lower template 6 is equal to the thickness of the inner mold substrate of the battery cover, t1 =0; the cylindrical hole of the intermediate cavity 11 is respectively communicated with the connection port 111 and the stop frame avoidance groove 113 of the battery cover; one end of the rectangular avoidance groove 113 of the stop frame of the battery cover is communicated with the bottom cylindrical hole of the intermediate cavity 11, and the other end is directly connected to the bottom surface of the upper template 1; there is a bottom square groove 114 at the intersection of the rectangular avoidance groove 113 and the bottom surface of the upper template 1; the upper mold sealing ring 2 is installed in the bottom square groove 114; the upper mold sealing ring 2 and the inflation cavity 01 formed by pressing on the inner mold base surface of the battery cover.

[0026] Furthermore, in the above technical scheme, the top surface of the lower template 6 has a top square groove 68; the guide sleeve mounting holes 65, two, are symmetrical on both sides of the central symmetry line of the explosion-proof plate cavity 63, and are interference fit with the guide sleeve 4, and their depth is equal to the height of the guide sleeve 4; the positive electrode cavity 61 has a positive electrode groove 611 at the top and a positive electrode screw hole 613 at the bottom; the sealing aluminum sheet cavity 62 has a sealing aluminum sheet groove 621 at the top and a sealing aluminum sheet screw hole 623 at the bottom; the explosion-proof plate cavity 63 has an explosion-proof plate groove 631 at the top and an explosion-proof plate screw hole 633 at the bottom; the negative electrode cavity 64 is provided with a negative electrode groove 641 at the top and a negative electrode screw hole 643 at the bottom.

[0027] Furthermore, in the above technical solution, the width and depth of the positive electrode cavity 61 and the negative electrode cavity 64 are consistent, but the lengths are different, and the anti-reverse can be achieved by the different lengths.

[0028] Furthermore, in the above technical scheme, the lower mold sealing ring 5 is composed of a sealing ring rectangular outer frame 50, a first middle partition 51, a second middle partition 52, a third middle partition 53, a fourth middle partition 54 and a fifth middle partition 55, which are correspondingly installed on the bottom surface of the lower template groove 68; the bottom of the lower mold sealing ring 5 is in contact with the bottom surfaces of the positive electrode groove 611, the sealing aluminum sheet groove 621, the explosion-proof sheet groove 631 and the negative electrode groove 641, and supports the outer substrate surface of the battery cover to be inspected to prevent the battery cover to be inspected from being compressed and deformed when the inflation cavity 01 is inflated; the lower mold sealing ring 5 and the support under the outer substrate surface of the battery cover form a closed air outlet cavity, which are respectively the positive electrode air outlet cavity 02, the explosion-proof sheet air outlet cavity 03, the sealing aluminum sheet air outlet cavity 04, and the positive electrode air outlet cavity 05.

[0029] Furthermore, in the above technical solution, the bottom end of the connection port 111 has three connection threaded holes 13 , which are evenly distributed at the center of the connection port 111 .

[0030] Furthermore, in the above technical solution, the bottom surface of the lower template 6 has four mounting screw holes 69 symmetrically distributed at the center hole position of the explosion-proof disk cavity 63 .

[0031] Furthermore, in the above technical solution, the depth of the square groove at the bottom is two-thirds of the thickness (or diameter) of the sealing ring, and the four corners of the square are in the shape of cylindrical process grooves.

[0032] Furthermore, in the above technical solution, the depth of the top square groove is two-thirds of the thickness (or diameter) of the sealing ring, and the four corners of the square are in the shape of cylindrical process grooves.

[0033] Working principle of the present invention:

[0034] As shown in the figure, when using the present invention, first place the battery cover on the lower mold sealing ring 5, and place it corresponding to the positions of the positive electrode cavity 61, the sealing aluminum sheet cavity 62, the explosion-proof plate cavity 63, and the negative electrode cavity 64; then the upper mold 1 and the lower mold 6 are molded together, and the upper mold 1 and the lower mold 6 are formed by the guide column 3 and the guide sleeve 4 to jointly clamp the battery cover for positioning and limiting. The upper mold sealing ring 2 is pressed on the inner mold substrate surface of the battery cover to form an inflation cavity 01, and the lower mold sealing ring 5 and the support under the outer mold substrate surface of the battery cover to form a closed air outlet cavity, which are respectively the negative electrode The air outlet cavity 02, the explosion-proof plate air outlet cavity 03, the sealed aluminum sheet air outlet cavity 04, and the positive electrode air outlet cavity 05; then start the airtightness detection equipment to detect the airtightness of the battery cover, the air inlet valve of the airtightness detection equipment is connected to the inflation cavity 01 with the middle cavity 11 of the upper template through the connecting port 111, and the air intake valve of the airtightness detection equipment is connected to the negative electrode air outlet cavity 02, the explosion-proof plate air outlet cavity 03, the sealed aluminum sheet air outlet cavity 04, and the positive electrode air outlet cavity 05 through the lower port thread. After the inspection is completed, the upper template 1 and the lower template 6 are opened and the battery cover can be taken out.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new energy battery cover airtightness inspection device, comprising an upper template (1) and a lower template (6), wherein the upper template (1) is located above the lower template (6), and is characterized in that: A connection port (111) is provided in the middle of the upper end surface of the upper template (1); an intermediate cavity (11) is provided at the lower end surface of the connection port (111); a guide post mounting hole (12) is provided on one side of the lower end surface of the upper template (1), and a guide post (3) is mounted in the guide post mounting hole (12); the upper end surface of the lower template (6) comprises a positive electrode cavity (61), a sealing aluminum sheet cavity (62), an explosion-proof disk cavity (63), and a negative electrode cavity (64); the positive electrode cavity (61) and the negative electrode cavity (64) are respectively located on both sides of the upper end surface of the lower template (6); the explosion-proof disk cavity (63) is located at the center of the upper end surface of the lower template (6); the sealing aluminum sheet cavity (62) is located on one side of the explosion-proof disk cavity (63) and is adjacent to the positive electrode cavity (61); the upper end surface of the lower template (6) A guide sleeve mounting hole (65) is provided on one side; a guide sleeve (4) is installed in the guide sleeve mounting hole (65); there are two guide post mounting holes (12), which are located on both sides of the central symmetry line of the middle cavity (11); there are two guide posts (3), which are respectively connected to the guide post mounting holes (12) by interference fit; the cylindrical hole of the middle cavity (11) is respectively connected to the connection port (111) and the stop frame avoidance groove (113) of the battery cover; one end of the rectangular avoidance groove (113) of the stop frame of the battery cover is connected to the bottom cylindrical hole of the middle cavity (11), and the other end is directly connected to the bottom surface of the upper mold plate (1); a bottom square recessed groove (114) is provided at the intersection of the rectangular avoidance groove (113) and the bottom surface of the upper mold plate (1); the upper mold sealing ring (2) is installed in the bottom square recessed groove (114); The top of the lower template (6) is provided with a top square groove (68); the guide sleeve mounting holes (65) are two and symmetrically arranged on both sides of the central symmetry line of the explosion-proof disk cavity (63), and are interference-fitted with the guide sleeve (4), and their depth is equal to the height of the guide sleeve (4); the top of the positive electrode cavity (61) is provided with a positive electrode groove (611), and the bottom is provided with a positive electrode screw hole (613); the top of the sealing aluminum sheet cavity (62) is provided with a sealing aluminum sheet groove (621), and the bottom is provided with a sealing aluminum sheet screw hole (623); the top of the explosion-proof disk cavity (63) is provided with a explosion-proof disk groove (631), and the bottom is provided with a explosion-proof disk screw hole (633); the top of the negative electrode cavity (64) is provided with a negative electrode groove (641), and the bottom is provided with a negative electrode screw hole (643).

2. A new energy battery cover airtightness inspection device according to claim 1, characterized in that: The positive electrode cavity (61) and the negative electrode cavity (64) have the same width and depth, but different lengths.

3. The airtightness inspection device for a new energy battery cover according to claim 1 is characterized in that: The lower mold sealing ring (5) is composed of a sealing ring rectangular outer frame (50), a first middle partition (51), a second middle partition (52), a third middle partition (53), a fourth middle partition (54) and a fifth middle partition (55), and is installed correspondingly on the bottom surface of the top square sink (68); the bottom surface of the lower mold sealing ring (5) is in contact with the bottom surfaces of the positive electrode sink (611), the sealing aluminum sheet sink (621), the explosion-proof sheet sink (631) and the negative electrode sink (641).

4. The airtightness inspection device for a new energy battery cover according to claim 1 is characterized in that: The bottom end of the connection port (111) is provided with three connection threaded holes (13) which are evenly distributed at the center of the connection port (111).

5. The airtightness inspection device for a new energy battery cover according to claim 1 is characterized in that: The bottom surface of the lower template (6) is provided with four mounting screw holes (69) which are symmetrically distributed at the center hole position of the explosion-proof disk cavity (63).

6. The airtightness inspection device for a new energy battery cover according to claim 1 is characterized in that: The depth of the square sink groove (114) at the bottom is two-thirds of the thickness of the sealing ring, and the four corners of the square are in the shape of cylindrical process grooves.

7. The airtightness inspection device for a new energy battery cover according to claim 1 is characterized in that: The depth of the top square sink groove (68) is two-thirds of the thickness of the sealing ring, and the four corners of the square are in the shape of cylindrical process grooves.

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