Battery cover airtightness test equipment

Abstract

The utility model discloses battery cover airtightness test equipment, which comprises a bearing platform deck, an automatic in-out sliding table, an automatic lifting press-fit assembly and an airtightness detector for implementing airtightness detection, the bearing platform deck is arranged on the automatic in-out sliding table, and the upper end face of the bearing platform deck is provided with a positioning pin for positioning a battery pack cover plate to be detected and an air hole; a flat bearing surface is arranged around the lower edge of the cover plate, and the automatic lifting press-fit assembly comprises a plurality of sets of lifting air cylinders, screw rod and screw sleeve assemblies, a closed press-fit plate and an air exhaust pipeline. A cover plate upper end face flange is tightly pressed through a sealing pressing plate of the automatic lifting pressing assembly, sealing of the upper end face space of the cover plate is achieved, air pressure in a pipeline is monitored through an air tightness detector under the negative pressure condition after air pumping is conducted through a vacuum pump, whether air leakage happens to a battery cover plate shell or not is judged accordingly, the detection precision is high, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automation, in particular to a battery cover airtightness testing device. Background Art

[0002] As the new energy vehicle market is booming, the production and sales of electric vehicles are gradually increasing. As the power source of new energy vehicles, the battery pack assembly is particularly important. As one of the "three electrics" of electric vehicles, it is also an indispensable part. With the frequent occurrence of spontaneous combustion accidents of new energy vehicles in the market, the performance and safety of the battery pack assembly has been valued by many automobile manufacturers, and it has also become the safety bottom line for the production and delivery of new energy vehicles, in order to fully ensure the safety of new energy vehicle batteries on the road. In order to improve the safety of the battery pack, its sealing performance requirements are extremely high to ensure that there will be no water seepage and short circuit problems. The outer shell of the battery pack assembly is made of metal material to provide an important sealing safety guarantee. For this reason, our company, a new energy power battery pack manufacturer, commissioned us to design a set of equipment for automatically detecting the sealing of the battery pack cover to increase detection sales, ensure the safety of the battery pack, and help the new energy vehicle market develop well. Utility Model Content

[0003] The purpose of the utility model is to provide a battery cover airtightness testing device to meet the technical requirements of automatic airtightness testing of the cover of the power battery pack of a new energy vehicle.

[0004] The technical solutions adopted to solve the above problems are:

[0005] A battery cover airtightness testing device comprises a supporting platform, an automatic in-and-out sliding platform, an automatic lifting and pressing assembly and an airtightness detector for performing airtightness detection.

[0006] The supporting platform is arranged on the automatic in-and-out slide, and the upper end surface is provided with positioning pins and air holes for positioning the cover plate of the battery pack to be inspected, and a flat supporting surface is arranged around the lower edge of the cover plate to ensure that the lifting force of the lower end surface of the cover plate to be inspected is balanced.

[0007] The automatic in-and-out slide comprises a slide, a slider rail assembly, a guide rod guide sleeve assembly and an electric screw pair. The electric screw pair drives the slide to move horizontally in and out, and maintains a linear sliding action with the auxiliary support of the guide rod guide sleeve assembly, and is supported and oriented by the slider rail assembly. The slide drives the supporting platform to stably feed and discharge materials.

[0008] The automatic lifting and pressing assembly is arranged on the frame, and includes several groups of lifting cylinders, screw and screw sleeve assemblies, closed pressing plates and exhaust pipes. Several groups of lifting cylinders are evenly distributed above the closed pressing plates, and drive the closed pressing plates to lift stably. A group of screw and screw sleeve assemblies is arranged on the outside of each group of lifting cylinders to ensure that the lifting rods of the lifting cylinders maintain vertical movement, thereby driving the closed pressing plates to lift stably. The lower end face of the closed pressing plate performs a pressing and sealing action against the cover plate to be tested that is fed into place. A sealing pressure frame is arranged on the flange of the outer periphery of the cover plate to be tested on the lower end face of the closed pressing plate, so as to achieve sealing of the entire circle of the cover plate to be tested. Several exhaust pipes are also arranged on the upper end of the closed pressing plate, and the exhaust pipes are connected to the vacuum pump by means of a pipeline to perform an exhaust operation.

[0009] Furthermore, the air tightness detector is connected to the pipeline to detect the change of air pressure in the pipeline, so as to judge whether the air tightness of the cover plate to be tested meets the standard.

[0010] Furthermore, the cover plate is hoisted by a hoisting frame and placed on a supporting platform, and the hoisting force is applied by screwing the anchor bolts arranged around the hoisting frame in conjunction with the threaded holes arranged at corresponding positions of the cover plate.

[0011] Furthermore, the sealing pressing frame is sealed to the sealed pressing plate, and only the lower opening and the air extraction duct are retained to maintain air permeability.

[0012] Furthermore, a sealing ring is provided on the lower end surface of the sealing pressing frame, and the sealing ring is pressing and sealing the entire circle of flange on the outer periphery.

[0013] The beneficial effects of the utility model are:

[0014] The battery cover airtightness test equipment uses a supporting platform to level, position and pave the lower end peripheral flange of the battery cover to be tested, and then uses the closed pressing plate of the automatic lifting and pressing assembly to tightly press the upper end flange of the cover to achieve the sealing of the upper end space of the cover. After the air is evacuated by a vacuum pump, the airtightness detector monitors the air pressure in the pipeline under negative pressure to determine whether there is any leakage in the outer shell of the battery cover. The detection accuracy is high and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A side view of a battery cover airtightness testing device according to an embodiment;

[0016] Figure 2 It is a structural schematic diagram of the automatic in-and-out slide and the automatic lifting and pressing assembly described in the embodiment;

[0017] Figure 3 A side view of the automatic in-and-out slide and the automatic lifting and pressing assembly described in the embodiment;

[0018] Among them, 1-supporting platform, 2-cover plate, 3-flange, 4-lifting frame, 5-automatic lifting and pressing assembly, 6-touch screen, 7-air tightness detector, 8-sensor, 9-screw and sleeve assembly, 10-lifting cylinder, 11-air exhaust, 12-sealed pressing plate, 13-slider and rail assembly, 14-exhaust pipe, 15-slide, 16-guide rod and sleeve assembly, 17-gas storage tank, 18-sealing pressure frame, 19-exhaust port, 20-sealing ring. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model will be described clearly and completely in the following in conjunction with the accompanying drawings in the form of embodiments.

[0020] See also Figures 1 to 3 This embodiment provides a battery cover airtightness testing device, including a supporting platform 1, an automatic entry and exit slide 15, an automatic lifting and pressing assembly 5 and an airtightness detector 7 for performing airtightness detection.

[0021] See also Figure 3 The supporting platform 1 is arranged on the automatic entry and exit slide 15, and the upper end surface is provided with positioning pins and air holes for positioning the battery pack cover plate 2 to be inspected, and a flat supporting surface is arranged around the lower edge of the cover plate 2 to enhance the stability of the posture of the cover plate after placement, and the flatness of the upper and lower end surfaces of the flange around the cover plate, so as to ensure that the lifting force on the lower end surface of the cover plate 2 to be inspected is balanced.

[0022] See also Figure 3 The automatic in-and-out slide 15 includes a slide 15, a slider rail assembly 13, a guide rod and guide sleeve assembly 16 and an electric screw pair. The slide 15 is driven by the electric screw pair to move horizontally in and out, and maintains a linear sliding action with the auxiliary support of the guide rod and guide sleeve assembly 16, and is supported and oriented by the slider rail assembly 13. The slide 15 drives the supporting platform 1 to stably feed and discharge materials.

[0023] See also Figure 2 and Figure 3The automatic lifting and pressing assembly 5 is arranged on the frame, including 6 groups of lifting cylinders 10, screw and screw sleeve assemblies 9, closed pressing plates 12 and exhaust pipes 14. The 6 groups of lifting cylinders 10 are evenly distributed above the closed pressing plates 12, and drive the closed pressing plates 12 to move stably up and down, and a group of screw and screw sleeve assemblies 9 are arranged on the outside of each group of lifting cylinders 10 to ensure that the lifting rods of the lifting cylinders 10 keep moving in the vertical direction, thereby driving the closed pressing plates 12 to move stably up and down, and the lower end surface of the closed pressing plates 12 is directly facing the cover plate 2 to be tested that is fed in place. The sealing action is performed by pressing and closing. The flange 3 on the outer periphery of the cover plate 2 to be tested is provided with a sealing pressing frame 18 at the lower end face of the sealed pressing plate 12, so as to achieve sealing of the entire circle of the cover plate 2 to be tested. The upper end of the sealed pressing plate 12 is also provided with a plurality of exhaust pipes 14. The exhaust pipes 14 are connected to the vacuum pump by means of pipelines to implement exhaust operation and store the extracted gas in the gas storage tank 17. The airtightness detector 7 is connected in the pipeline to detect the air pressure change in the pipeline to determine whether the airtightness of the cover plate 2 to be tested meets the standard and whether the sealing of the cover plate is good.

[0024] See also Figure 1 The cover plate 2 is hoisted by the hoisting frame 4 and placed on the supporting platform 1. The lifting force is applied by screwing the anchor bolts arranged around the hoisting frame 4 with the threaded holes arranged at the corresponding positions of the cover plate 2.

[0025] In particular, the sealing press frame 18 is sealed to the closed pressing plate 12, and only the lower opening and the exhaust pipe 14 are retained to maintain air permeability.

[0026] See also Figure 3 A sealing ring 20 is disposed on the lower end surface of the sealing pressing frame 18 , and the sealing ring 20 presses and seals the entire circle of the flange 3 on the outer periphery.

[0027] The above describes in detail the implementation modes of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes. Various changes, modifications, substitutions and variations can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A battery cover airtightness testing device, comprising a supporting platform (1), an automatic entry and exit slide, an automatic lifting and pressing assembly (5), and an airtightness detector (7) for performing airtightness detection, characterized in that: The supporting platform (1) is arranged on an automatic entry and exit slide, and the upper end surface is provided with positioning pins and air holes for positioning the cover plate (2) of the battery pack to be tested, and a flat supporting surface is arranged around the lower edge of the cover plate (2). The automatic lifting and pressing assembly (5) is arranged on the frame, and comprises a plurality of lifting cylinders (10), screw and screw sleeve assemblies (9), a sealed pressing plate (12) and an exhaust pipe (14). The plurality of lifting cylinders (10) are evenly distributed above the sealed pressing plate (12) and drive the sealed pressing plate (12) to lift stably. A group of screw and screw sleeve assemblies (9) is arranged outside each lifting cylinder (10). The lower end surface of the sealed pressing plate (12) is directly facing the cover plate (2) to be tested that has been fed into place to perform a pressing and sealing action. The lower end surface of the sealed pressing plate (12) is directly facing the flange (3) on the outer periphery of the cover plate (2) to be tested. A sealing pressing frame (18) is arranged on the upper end of the sealed pressing plate (12). The exhaust pipe (14) is also arranged on the upper end of the sealed pressing plate (12). The exhaust pipe (14) is connected to the vacuum pump by means of a pipeline to perform an exhaust operation. The airtightness detector (7) is connected to the pipeline to detect the change of air pressure in the pipeline, thereby judging whether the airtightness of the cover plate (2) to be tested meets the standard.

2. The battery cover airtightness testing device according to claim 1, characterized in that: The automatic in-and-out slide comprises a slide (15), a slider rail assembly (13), a guide rod guide sleeve assembly (16) and an electric screw pair. The electric screw pair drives the slide (15) to move in and out horizontally, and maintains a linear sliding action with the auxiliary support of the guide rod guide sleeve assembly (16). The slide is supported and oriented by the slider rail assembly (13). The slide (15) drives the supporting platform (1) to stably feed and discharge materials.

3. The battery cover airtightness testing device according to claim 1, characterized in that: The cover plate (2) is hoisted by a hoisting frame (4) and placed on the supporting platform (1), and the hoisting force is applied by screwing the anchor bolts arranged around the hoisting frame (4) together with the threaded holes arranged at the corresponding positions of the cover plate (2).

4. The battery cover airtightness testing device according to claim 1, characterized in that: The sealing press frame (18) is sealed to the sealed press plate (12), with only the lower opening and the air extraction pipe (14) being retained to maintain air permeability.

5. The battery cover airtightness testing device according to claim 1, characterized in that: The lower end surface of the sealing pressing frame (18) is provided with a sealing ring (20), and the sealing ring (20) is pressing and sealing the entire circle of the flange (3) on the outer periphery.

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