Battery module pressurization and air tightness test workstation

Abstract

The utility model discloses a battery module pressurization and air tightness test workstation. The battery module pressurization and air tightness test workstation comprises a gantry support frame, a module pressurization device and an air tightness detection device, the air tightness detection device comprises a mounting frame and a movable frame, the movable frame is connected with a plug-in driving device, the plug-in driving device is connected with a mounting plate, and the mounting plate is connected with two air tightness detection heads; the air tightness detection head comprises a shell, a piston is arranged in the shell, the piston is in sealing fit with the inner wall of the shell, one side of the piston and the shell form an air tightness detection chamber, the shell is provided with an air hole connected with the air tightness detection chamber, and the air hole is connected with an air pressure detector; one end of the shell is open and is connected with the narrow-opening cover; according to the utility model, the module pressurization device and the air tightness detection device are integrated, so that the integrated operation of pressurization lamination and air tightness detection of the battery module is realized, the test efficiency is remarkably improved, and the transfer and waiting time in the test process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, and particularly relates to a battery module pressurizing and airtightness testing workstation. Background Technique

[0002] With the rapid development of the new energy vehicle industry, as a core component of electric vehicles, the quality and safety performance of battery modules have received increasing attention. In the production process of battery modules, multiple processes are required. Among them, pressurized bonding and airtightness detection are key steps to ensure good sealing between the battery module and the box body and prevent gas or liquid leakage.

[0003] The traditional process of pressurized bonding and airtightness detection of battery modules often has the following deficiencies: First, the detection process is cumbersome, requiring multiple transfers of battery modules, resulting in low efficiency; second, the detection accuracy is limited, and it is difficult to achieve high-precision airtightness detection of the water-cooling pipes of battery modules; third, the equipment has poor flexibility and is difficult to adapt to battery modules of different sizes and specifications; fourth, the maintenance cost is relatively high, the equipment disassembly and installation are complex, which is not conducive to quick replacement and maintenance. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and provide a battery module pressurizing and airtightness testing workstation, which realizes the integrated operation of pressurized bonding and airtightness detection of battery modules, significantly improves the testing efficiency, and reduces the transfer and waiting time in the testing process.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A battery module pressurizing and airtightness testing workstation, comprising: a gantry support frame for providing structural support; a module pressurizing device for pressing the battery module downward to make the battery module fit with the box body; an airtightness detection device, including a mounting frame fixed to the gantry support frame, and a movable frame connected to the mounting frame in a lifting manner. The movable frame is connected to an insertion driving device, and the telescopic end of the insertion driving device is connected to a mounting plate, and the mounting plate is connected to two airtightness detection heads; the airtightness detection head includes a housing, a piston is arranged in the housing, the piston is in sealing cooperation with the inner wall of the housing, the piston is provided with a middle hole, air holes are arranged on the peripheral side wall of the housing, and the air holes are connected to a pressure detector; a return spring is arranged between one end of the piston and the housing, and the other end of the housing is an opening and is connected to a narrow mouth cover for limiting the piston and being inserted into the port of the water-cooling pipe of the battery module to be detected.

[0007] The mounting frame is connected to a detection block, the detection block is connected to two air pipe joints, and the airtightness detection head is in sealing plug-in fit with the corresponding air pipe joint.

[0008] The module pressing device includes a pressing lifting frame, a mounting frame, and a pressing tooling; the pressing lifting frame is connected to the lower side of the top of the gantry support frame in a liftable manner; the mounting frame is detachably connected to the lower side of the pressing lifting frame; the pressing tooling is arranged below the mounting frame and is connected to the mounting frame through a plurality of vertically telescopic pressing driving devices for pressing the shoulders of the battery cells.

[0009] The pressing lifting frame is connected to a first pair of plug plates, and a plurality of air pipe quick connectors and a plurality of cable quick connectors are arranged on the first pair of plug plates; the mounting frame is connected to a second pair of plug plates, and the second pair of plug plates is provided with a plurality of air pipe quick sockets that are in one-to-one corresponding plug-in fit with the air pipe quick connectors, and a plurality of cable quick sockets that are in one-to-one corresponding plug-in fit with the cable quick connectors.

[0010] A plurality of the pressing driving devices are distributed in a rectangular array on the lower side of the mounting frame. The pressing tooling includes a plurality of pressing plates. Each column of the pressing driving devices is commonly connected to one of the pressing plates and drives it to lift. Pressing strips are respectively arranged on both sides of the lower end surface of each pressing plate for contacting and pressing the shoulders of the battery module.

[0011] The pressing lifting frame and the mounting frame are detachably connected through quick connectors; the quick connectors include plug posts, locking plates, and quick plug driving devices. The lower end of the plug post is fixed to the mounting frame, and a limiting ring plate is arranged at the upper end. The locking plate is horizontally slidably connected to the pressing lifting frame, and a U-shaped slot is arranged on one side thereof. The quick plug driving device is used to drive the locking plate to slide horizontally so that when the limiting ring plate of the plug post is displaced above the locking plate, the U-shaped slot horizontally inserts into the plug post to abut and limit the limiting ring plate.

[0012] A plurality of columns and a plurality of lifting driving devices are arranged on the lower side of the top of the gantry support frame; a plurality of the lifting driving devices are commonly connected to the pressing lifting frame and drive it to lift; each column is provided with a guide groove, and a plurality of fixing rods are arranged on the upper end surface of the pressing lifting frame. Each fixing rod is provided with a guide rail that is vertically slidably matched with the corresponding guide groove for guiding the lifting of the pressing lifting frame.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] The workstation integrates a module pressing device and an airtightness detection device, realizing the integrated operation of pressing and fitting and airtightness detection of the battery module, significantly improving the test efficiency, and reducing the transfer and waiting time in the test process;

[0015] By designing an airtight detection head with a piston and an airtight detection chamber, the detection environment can be precisely controlled, enabling high-precision airtight detection of the water-cooled pipe ports of the battery module and ensuring the safety and reliability of the battery module.

[0016] The quick connection and disconnection between the pressurizing lifting frame and the installation frame are realized through quick connectors, and the quick plug connectors for the air pipes and cables of the first pair of plug plates and the second pair of plug plates are designed, simplifying the installation, debugging, and maintenance processes of the equipment. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the workstation in an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the structure of the gantry support frame in an embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the structure of the airtight detection device in an embodiment of the present application;

[0021] Figure 4 It is a schematic diagram of the split structure of the airtight detection head in an embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of the structure of the pressurizing lifting frame in an embodiment of the present application;

[0023] Figure 6 It is a schematic diagram of the structure of the installation frame and the pressurizing tooling in an embodiment of the present application;

[0024] Figure 7 It is a schematic diagram of the structure of the pressurizing plate in an embodiment of the present application;

[0025] Figure 8 It is a schematic diagram of the structure of the first pair of plug plates and the second pair of plug plates in an embodiment of the present application;

[0026] Figure 9 It is a schematic diagram of the structure of the quick connector in an embodiment of the present application;

[0027] In the figure: 1. Gantry support frame; 2. Pressing lifting frame; 3. Installation frame; 4. Pressing tooling; 401. Pressing plate; 402. Pressing strip; 5. Pressing driving device; 6. Installation rack; 7. Movable rack; 8. Insertion driving device; 9. Installation plate; 10. Airtight detection device; 11. First insertion plate; 12. Second insertion plate; 13. Insertion column; 14. Locking plate; 15. Quick insertion driving device; 16. Limit ring plate; 17. U-shaped slot; 18. Column; 19. Lifting driving device; 20. Fixed rod; 21. Shell; 22. Piston; 23. Air hole; 24. Narrow mouth cover; 25. Return spring; 26. Detection block. Detailed implementation mode

[0028] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" 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 directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] See Figures 1 to 9, A battery module pressurization and airtightness testing workstation, comprising: a gantry support frame 1 for providing structural support; a module pressurization device for pressing the battery module downward to make the battery module fit with the box body; an airtightness detection device 10, including a mounting frame 6 fixed to the gantry support frame 1 and a movable frame 7 connected to the mounting frame 6 in a lifting manner. The movable frame 7 is connected to an insertion driving device 8, and the telescopic end of the insertion driving device 8 is connected to a mounting plate 9, and the mounting plate 9 is connected to two airtightness detection heads; the airtightness detection head includes a housing 21, a piston 22 is arranged in the housing, the piston 22 is in sealing cooperation with the inner wall of the housing 21, the piston 22 is provided with a middle hole, an air hole 23 is arranged on the circumferential side wall of the housing 21, and the air hole 23 is connected to a pressure detector; a return spring 25 is arranged between the piston 22 and one end of the housing 21, and the other end of the housing 21 is an opening and is connected to a narrow mouth cover 24 for limiting the piston 22 and being inserted into the water-cooling pipe port of the battery module to be detected.

[0033] Specifically, the AGV cart transports the battery module box body to a predetermined position of the workstation; the airtightness detection device is started, the movable frame 7 descends, so that the airtightness detection heads of the insertion driving device 8 approach the water-cooling pipe ports of the battery module; the insertion driving device 8 extends, and the narrow mouth covers 24 of the two airtightness detection heads are inserted into the two ports of the water-cooling pipe of the battery module, and the piston 22 contacts the water-cooling pipe port under the pressure of the return spring 25 to achieve sealed docking; a certain amount of air is introduced into the air hole 23 through the pressure detector, and the air flow enters the water-cooling pipe through the hollow of the piston 22 to detect the air pressure value of the water-cooling pipe. When the air pressure value remains at a predetermined value for a certain period of time, it indicates that the airtightness of the water-cooling pipe of the battery module is good; after confirming that the airtightness of the water-cooling pipe of the battery module is good, the module pressurization device is started; the module pressurization device presses the battery module downward to tightly press and bond the adhesive between the battery module and the box body.

[0034] The airtightness detection is carried out before the pressurization and bonding to ensure that only the battery modules with good airtightness are subjected to pressurization and bonding, improving the product quality; if the airtightness detection of the battery module is unqualified, it can be directly taken out, avoiding the problem that it is not easy to disassemble after the pressurization and bonding first.

[0035] In summary, the workstation integrates a module pressurization device and an airtightness detection device, realizing the integrated operation of pressurizing and fitting the battery module and detecting the airtightness, significantly improving the testing efficiency and reducing the transfer and waiting time in the testing process.

[0036] In some embodiments, the mounting bracket 6 is connected to the detection block 26, the detection block 26 is connected to two air pipe connectors, and the airtight detection head is in sealed plug-in fit with the corresponding air pipe connector. By designing the detection block 26, the airtightness of the airtight detection head is detected; specifically, the movable frame 7 is raised to the same height as the detection block 26, the insertion drive device 8 extends, so that the two airtight detection heads are respectively inserted into the two air pipe connectors. Since the detection block 26 itself is airtight designed, therefore, by ventilating into the airtight detection head and detecting the air pressure, the airtightness of the airtight detection head itself can be detected, so as to ensure that the airtight detection head is normal and leak-free before detecting the water-cooled pipe port of the battery module.

[0037] In some embodiments, the module pressurizing device includes a pressurizing lifting frame 2, a mounting frame 3 and a pressurizing tooling 4; the pressurizing lifting frame 2 is connected to the lower side of the top of the gantry support frame 1 in a liftable manner; the mounting frame 3 is detachably connected to the lower side of the pressurizing lifting frame 2; the pressurizing tooling 4 is arranged below the mounting frame 3 and is connected to the mounting frame 3 through a plurality of vertically telescopic pressurizing drive devices 5 for pressurizing the shoulders of the battery cells.

[0038] The module pressurizing device realizes precise pressurization of the shoulders of the battery cells through the combined design of the pressurizing lifting frame 2, the mounting frame 3, the pressurizing tooling 4 and the pressurizing drive devices 5. Specifically, the pressurizing lifting frame 2 is driven to descend, so that the pressurizing tooling 4 is close to the upper end face of the battery module, and then a plurality of pressurizing drive devices 5 extend synchronously, so that the pressurizing tooling 4 contacts and pressurizes the upper end face of the battery module. There is an adhesive coating between the battery module and the box body. By pressurizing the battery module downward, the battery module is tightly adhered to the box body.

[0039] In some embodiments, the pressurizing lifting frame 2 is connected to a first plug-in board 11, and a plurality of air pipe quick connectors and a plurality of cable quick connectors are arranged on the first plug-in board 11; the mounting frame 3 is connected to a second plug-in board 12, and the second plug-in board 12 is provided with a plurality of air pipe quick sockets in one-to-one plug-in fit with the air pipe quick connectors, and a plurality of cable quick sockets in one-to-one plug-in fit with the cable quick connectors. By designing the first plug-in board 11 and the second plug-in board 12, when the pressurizing lifting frame 2 and the mounting frame 3 are assembled, the quick docking of the air pipe quick connectors and the air pipe quick sockets, and the quick docking of the cable quick connectors and the cable quick sockets are realized, so as to realize the quick connection of the circuit and the air path, improve the replacement efficiency of the mounting frame 3 and the pressurizing tooling 4, and quickly adapt to the pressing of different battery modules.

[0040] In some embodiments, a plurality of pressurizing drive devices 5 are distributed in a rectangular array on the lower side of the mounting frame 3. The pressurizing tooling 4 includes a plurality of pressurizing plates 401. Each column of pressurizing drive devices 5 is commonly connected to a pressurizing plate 401 and drives it to lift. Pressurizing strips 402 are respectively arranged on both sides of the lower end surface of each pressurizing plate 401 for contact pressurization of the shoulders of the battery module.

[0041] The rectangular array distribution method ensures the uniform distribution of the pressing force and can adapt to battery modules of different sizes; each column of the pressing drive devices 5 is commonly connected to a pressing plate 401 and drives its lifting, so that each pressing plate 401 can be lifted independently, thereby realizing the precise pressing on the shoulders of the battery module; pressing strips 402 are respectively arranged on both sides of the lower end surface of each pressing plate 401 to achieve uniform and effective pressing on the shoulders of the battery module.

[0042] In some embodiments, the pressing lifting frame 2 and the mounting frame 3 are detachably connected through quick connectors; the quick connectors include plug posts 13, locking plates 14 and quick insertion drive devices 15. The lower end of the plug post 13 is fixed to the mounting frame 3, and a limiting ring plate 16 is arranged at the upper end. The locking plate 14 is horizontally slidably connected to the pressing lifting frame 2, and a U-shaped slot 17 is arranged on one side thereof. The quick insertion drive device 15 is used to drive the locking plate 14 to slide horizontally, so that when the limiting ring plate 16 of the plug post 13 is displaced above the locking plate 14, the U-shaped slot 17 is horizontally inserted into the plug post 13 to abut and limit the limiting ring plate 16.

[0043] When it is necessary to connect the pressing lifting frame 2 and the mounting frame 3, the quick insertion drive device 15 drives the locking plate 14 to slide horizontally to align the U-shaped slot 17 with the plug post 13; then, the plug post 13 moves upward under the action of an external force until the limiting ring plate 16 is displaced above the locking plate 14; then, the quick insertion drive device 15 drives the locking plate 14 to slide horizontally again, so that the U-shaped slot 17 is horizontally inserted into the plug post 13 and abuts and limits the limiting ring plate 16; in this way, the plug post 13 is locked in the U-shaped slot 17 of the locking plate 14, realizing the firm connection between the pressing lifting frame 2 and the mounting frame 3. The design of the quick connectors makes the connection and disassembly between the pressing lifting frame 2 and the mounting frame 3 very fast and convenient.

[0044] In some embodiments, several columns 18 and several lifting drive devices 19 are arranged on the lower side of the top of the gantry support frame 1; the several lifting drive devices 19 are commonly connected to the pressing lifting frame 2 and drive its lifting; each column 18 is provided with a guide groove, and several fixing rods 20 are arranged on the upper end surface of the pressing lifting frame 2. Each fixing rod 20 is provided with a guide rail that is vertically slidably matched with the corresponding guide groove for guiding the lifting of the pressing lifting frame 2. Through the cooperation of the columns 18 and the lifting drive devices 19 on the lower side of the top of the gantry support frame 1, the stable lifting control of the pressing lifting frame 2 is realized.

[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery module pressurization and airtightness testing workstation, characterized in that: include: A gantry support frame (1) for providing structural support; A module pressurizing device, used to pressurize the battery module downward to make the battery module fit the box body; An airtightness detection device (10) comprises a mounting frame (6) fixed to the gantry support frame (1), and a movable frame (7) connected to the mounting frame (6) in a lifting manner, the movable frame (7) being connected to a plug-in drive device (8), the plug-in drive device (8) being connected to a mounting plate (9), and the mounting plate (9) being connected to two airtightness detection heads; The airtight detection head comprises a shell (21), a piston (22) is arranged inside the shell (21), the piston (22) is sealed with the inner wall of the shell (21), the piston (22) is provided with a central hole, the peripheral side wall of the shell (21) is provided with an air hole (23), and the air hole (23) is connected to the air pressure detector; a return spring (25) is arranged between the piston (22) and one end of the shell (21), and the other end of the shell (21) is open and connected with a narrow cover (24) for limiting the piston (22) and docking with the water cooling pipe port of the battery module to be detected.

2. A battery module pressurization and airtightness testing workstation according to claim 1, characterized in that: The mounting frame (6) is connected to a detection block (26), the detection block (26) is connected to two air pipe joints, and the airtight detection head is sealed and plugged into the corresponding air pipe joints.

3. A battery module pressurization and airtightness testing workstation according to claim 1, characterized in that: The module pressurizing device comprises a pressurizing lifting frame (2), an installation frame (3) and a pressurizing tool (4); the pressurizing lifting frame (2) is liftably connected to the lower side of the top of the gantry support frame (1); the installation frame (3) is detachably connected to the lower side of the pressurizing lifting frame (2); the pressurizing tool (4) is arranged below the installation frame (3) and is connected to the installation frame (3) via a plurality of vertically retractable pressurizing drive devices (5) for pressurizing the shoulder of the battery cell.

4. A battery module pressurization and airtightness testing workstation according to claim 3, characterized in that: The pressurized lifting frame (2) is connected to a first pair of plug plates (11), on which a plurality of air pipe quick-connect connectors and a plurality of cable quick-connect connectors are provided; the installation frame (3) is connected to a second pair of plug plates (12), on which a plurality of air pipe quick-connect connectors and a plurality of cable quick-connect connectors are provided; and the second pair of plug plates (12) is provided with a plurality of air pipe quick-connect sockets corresponding to and mating with the air pipe quick-connect connectors, and a plurality of cable quick-connect sockets corresponding to and mating with the cable quick-connect connectors.

5. A battery module pressurization and airtightness testing workstation according to claim 3, characterized in that: A plurality of the pressurizing drive devices (5) are distributed in a rectangular array on the lower side of the installation frame (3); the pressurizing tooling (4) comprises a plurality of pressurizing plates (401); each column of the pressurizing drive devices (5) is connected to a pressurizing plate (401) and drives it to rise and fall; and pressurizing strips (402) are respectively provided on both sides of the lower end surface of each pressurizing plate (401) for contact pressurization of the shoulder of the battery module.

6. A battery module pressurization and airtightness testing workstation according to claim 3, characterized in that: The pressurized lifting frame (2) and the installation frame (3) are detachably connected via a quick plug-in component; the quick plug-in component comprises a plug post (13), a locking plate (14) and a quick plug-in drive device (15); the lower end of the plug post (13) is fixed to the installation frame (3), and a limiting ring plate (16) is provided at the upper end; the locking plate (14) is horizontally slidably connected to the pressurized lifting frame (2), and a U-shaped slot (17) is provided on one side thereof; the quick plug-in drive device (15) is used to drive the locking plate (14) to slide horizontally, so that when the limiting ring plate (16) of the plug post (13) is displaced to the upper side of the locking plate (14), the U-shaped slot (17) is horizontally inserted into the plug post (13) to abut against and limit the limiting ring plate (16).

7. A battery module pressurization and airtightness testing workstation according to claim 3, characterized in that: A plurality of columns (18) and a plurality of lifting drive devices (19) are provided on the lower side of the top of the gantry support frame (1); the plurality of lifting drive devices (19) are connected to the pressurized lifting frame (2) and drive it to lift; each of the columns (18) is provided with a guide groove, and the upper end surface of the pressurized lifting frame (2) is provided with a plurality of fixing rods (20), and each fixing rod (20) is provided with a guide rail that vertically slides with the corresponding guide groove, so as to guide the pressurized lifting frame (2) to lift and lower.

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