Air tightness rapid detection device for aluminum alloy power battery tray assembly

Abstract

The utility model relates to an air tightness rapid detection device for an aluminum alloy power battery tray assembly, which is characterized in that a track is arranged on a bottom frame of a rack, one end of the track extends out of the range of the rack, a slidable sliding platform is arranged on the track, a sealing rubber strip is arranged on the sliding platform, and the position of the sealing rubber strip is matched with the edge position of the tray assembly; a plurality of lower pressing frame cylinders are mounted on the top frame of the rack; and the end parts of piston rods of the lower pressing frame cylinders are connected with lower pressing frames. The air tightness detection device is used for detecting the air tightness of the power battery tray cavity, and has the advantages of quick and convenient detection operation, high detection accuracy, compact equipment structure, easiness in maintenance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of energy vehicle component production, in particular to a rapid air tightness detection device for an aluminum alloy power battery tray assembly. Background Art

[0002] In recent years, new energy electric vehicles have gradually replaced fuel vehicles and become a growing type of vehicle. The power battery in an electric vehicle is a storage component for its electrical energy and is a core component in the entire vehicle. The power battery module is carried by the battery tray, which is then connected to the vehicle chassis to form a sturdy load-bearing body. Considering the lightweight body, the battery tray is made of aluminum alloy. The aluminum alloy battery tray uses profiles that overlap or mortise and tenon each other at the head and tail to form the vertical and horizontal frames and frame bearing structure of the battery tray. The bottom is welded with aluminum plates to form a tray structure. The various welds of the tray assembly need to be welded and sealed well, and there must be no leaks or gaps. If the welding is not airtight, moisture will enter the power battery tray during the use of the vehicle, causing a short circuit in the battery or control circuit.

[0003] Therefore, after the battery tray assembly is welded, the weld needs to be tested for air tightness. The conventional air tightness test method is: turn the tray assembly upside down on the tooling or platform, and then seal the edge of the contact surface between the tray assembly and the platform with a rubber strip or sealing tape, and also seal the processed holes on the tray assembly with a rubber head, so that a closed space is formed between the inner cavity of the tray assembly and the platform, and then the tray assembly is pressed tightly, and high-pressure air is introduced into the inner cavity and maintained for a period of time, and the air pressure in the inner cavity is observed to slowly decrease, so as to judge whether the battery tray assembly is airtight. However, this detection method is inefficient and requires a large number of manpower, which is not conducive to improving production efficiency. Summary of the invention

[0004] In view of the above problems, the utility model provides an aluminum alloy power battery tray assembly air tightness rapid detection device, which is used to perform air tightness detection on the power battery tray cavity. It has the advantages of fast and convenient detection operation, high detection accuracy, compact equipment structure and easy maintenance.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for quickly detecting the air tightness of an aluminum alloy power battery tray assembly, wherein a track is arranged on the bottom frame of the rack, one end of the track extends out of the range of the rack, a slidable sliding platform is arranged on the track, a sealing strip is arranged on the sliding platform, and the position of the sealing strip matches the edge position of the tray assembly; a plurality of lower pressure frame cylinders are installed on the top frame of the rack, and the ends of the piston rods of the lower pressure frame cylinders are connected to the lower pressure frame.

[0007] End limiters are set at both ends of the track to prevent the sliding platform from falling off the track.

[0008] The sliding platform is provided with a plurality of limit blocks, which match the edge position of the pallet assembly. The limit blocks are L-shaped, with the horizontal part fixedly connected to the platform and the vertical part limiting the edge of the pallet.

[0009] The sliding platform is provided with a plurality of pin positioning mechanisms, which match the positions of the pin holes on the edge of the pallet assembly. The pin holes on the edge of the pallet are processed holes. After the positioning pins are inserted into the processed holes, the pallet assembly can be positioned and placed on the sliding platform, further preventing the pallet assembly from slipping.

[0010] A side pressure cylinder is arranged on one side of the sliding platform to press the tray assembly to prevent the tray assembly from shifting.

[0011] The sliding platform is provided with a plurality of blocking mechanisms, which are composed of a cylinder and a plug at the end of a piston rod. Since there are a plurality of pre-processed holes on the side wall of the tray assembly, the blocking mechanism is arranged according to the position of the pre-processed holes, and the processed holes are blocked with rubber or silicone plugs to form a closed space in the inner cavity.

[0012] A handle is arranged on the outside of the sliding platform, which facilitates the operator to push and pull the sliding platform to slide on the track.

[0013] The top frame of the frame is equipped with several pressurizing mechanisms, which are composed of a cylinder and a pressure head, and the position of the pressure head matches the position of the frame of the lower pressure frame. The pressurizing mechanism is used to press the edge of the tray assembly with the sealing strip to prevent air leakage when the inner cavity of the tray assembly is inflated and pressurized.

[0014] The use process of the utility model is as follows:

[0015] A drags the sliding platform to the extension of the track;

[0016] B. Place the tray assembly upside down on the sliding platform, with the edge of the tray assembly just pressed on the sealing strip, and the edge abutting against the limit block; the positioning pin of the pin positioning mechanism matches the vertical pre-processed hole; the pre-processed hole of the side wall matches the blocking mechanism;

[0017] C side pressure cylinder extends to tighten the tray assembly;

[0018] D The operator pushes the sliding platform to the other end of the track, and the lower pressure frame cylinder pushes the lower pressure frame downward and places it on the upper end surface of the pallet assembly layer. Then the piston rod of the pressure mechanism presses down to firmly press the pallet assembly onto the sealing strip;

[0019] E. Pressurize and ventilate the inner cavity of the pallet assembly from the inflation port, and keep it airtight after pressure is applied. If the inner cavity pressure is stable and does not drop within the specified time, it proves that the pallet assembly is airtight;

[0020] After the pressure is released, the pressurizing mechanism retreats, the lower pressure frame rises, and the operator pulls the sliding platform outward to remove the pallet assembly.

[0021] Advantages of utility models

[0022] 1. The utility model is specially used for the air tightness detection of the power battery tray assembly, and has the advantages of fast and convenient detection operation and high detection accuracy.

[0023] 2. The overall structure of the utility model equipment is compact and reasonable, the components are highly reliable and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the elevation structure diagram of the utility model; (the sliding platform is in the sliding out state)

[0025] Figure 2 for Figure 1 The enlarged structure diagram at position Ⅰ in the middle;

[0026] Figure 3 This is the elevation structure diagram of the utility model; (the sliding platform is in, and the lower pressure frame is not pressed down)

[0027] Figure 4 This is the elevation structure diagram of the utility model; (the sliding platform enters, and the lower pressure frame is in the downward pressure state)

[0028] Figure 5 This is the main structural diagram of the utility model;

[0029] Figure 6 This is a top view of the structure of the utility model;

[0030] The serial numbers in the figure are marked as: 1-track; 2-sliding platform; 21-side pressure cylinder; 22-pin positioning mechanism; 23-sealing strip; 24-limiting block; 25-handle; 26-sealing mechanism; 3-tray assembly; 4-frame; 41-lower pressure frame; 42-lower pressure frame cylinder; 43-pressurizing mechanism. DETAILED DESCRIPTION Example 1

[0031] A device for quickly detecting the air tightness of an aluminum alloy power battery tray assembly, wherein a track 1 is arranged on the bottom frame of a frame 4, one end of the track 1 extends out of the frame range, a slidable sliding platform 2 is arranged on the track 1, a sealing strip 23 is arranged on the sliding platform 2, and the position of the sealing strip 23 matches the edge position of the tray assembly 3; a plurality of lower pressure frame cylinders 42 are installed on the top frame of the frame 4, and the piston rod ends of the lower pressure frame cylinders 42 are connected to the lower pressure frame 41.

[0032] A plurality of limit blocks 24 are arranged on the sliding platform 2 , and the limit blocks 24 match the edge positions of the tray assembly 3 .

[0033] A plurality of pin positioning mechanisms 22 are arranged on the sliding platform 2 , and the pin positioning mechanisms 22 match the positions of the pin holes on the edges of the tray assembly 3 .

[0034] A side pressure cylinder 21 is provided on one side of the sliding platform 2 .

[0035] The sliding platform 2 is provided with a plurality of blocking mechanisms 26 , which are composed of a cylinder and a plug at the end of a piston rod.

[0036] A handle 25 is disposed on the outer side of the sliding platform 2 .

[0037] The top frame of the frame 4 is equipped with a plurality of pressurizing mechanisms 43 , which are composed of a cylinder and a pressure head, and the position of the pressure head matches the position of the frame of the lower press frame 41 .

Claims

1. A rapid air tightness detection device for an aluminum alloy power battery tray assembly, characterized in that: A track (1) is arranged on the bottom frame of the frame (4), one end of the track (1) extends out of the frame, a slidable sliding platform (2) is arranged on the track (1), a sealing strip (23) is arranged on the sliding platform (2), and the position of the sealing strip (23) matches the edge position of the pallet assembly (3); a plurality of lower pressure frame cylinders (42) are installed on the top frame of the frame (4), and the piston rod ends of the lower pressure frame cylinders (42) are connected to the lower pressure frame (41).

2. According to claim 1, the quick air tightness detection device for the aluminum alloy power battery tray assembly is characterized in that: A plurality of limit blocks (24) are arranged on the sliding platform (2), and the limit blocks (24) match the edge positions of the tray assembly (3).

3. According to claim 1, the quick air tightness detection device for the aluminum alloy power battery tray assembly is characterized in that: A plurality of pin positioning mechanisms (22) are arranged on the sliding platform (2), and the pin positioning mechanisms (22) match the positions of the pin holes on the edges of the tray assembly (3).

4. According to claim 1, the quick air tightness detection device for the aluminum alloy power battery tray assembly is characterized in that: A side pressure cylinder (21) is provided on one side of the sliding platform (2).

5. According to claim 1, the quick air tightness detection device for the aluminum alloy power battery tray assembly is characterized in that: A plurality of blocking mechanisms (26) are arranged on the sliding platform (2), and the blocking mechanisms (26) are composed of a cylinder and a plug at the end of a piston rod.

6. According to claim 1, the quick air tightness detection device for the aluminum alloy power battery tray assembly is characterized in that: A handle (25) is provided on the outer side of the sliding platform (2).

7. According to claim 1, the quick air tightness detection device for the aluminum alloy power battery tray assembly is characterized in that: A plurality of pressurizing mechanisms (43) are installed on the top frame of the frame (4), wherein the pressurizing mechanisms (43) are composed of a cylinder and a press head, and the position of the press head matches the position of the frame of the lower press frame (41).

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