A lithium battery sealing test device

Abstract

The present invention relates to the field of detection technology, and discloses a lithium battery sealing test device, including a closing assembly, including a closing part, the closing part including a closing door, a rotating column, a limiting wheel, a limiting block and a torsion spring, the rotating column is plugged into one side of the closing door, the limiting wheel is fixed to one end of the rotating column, and the limiting block is located on one side of the limiting wheel. The beneficial effects of the present invention are: during detection, the closing door can be used to close the lithium battery, and the detection platform can be driven to move when it is opened and closed, without the need for manual start and stop. The closing door can effectively isolate external environmental factors such as temperature, humidity, dust, etc. from interfering with the lithium battery and the detection process, and can drive the detection platform to move accurately while opening and closing the closing door, avoiding the position deviation caused by manual start and stop of the platform. During each detection, the lithium battery can be accurately placed in a fixed position below the detector, ensuring the consistency of the relative position relationship between the detector and the battery.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, in particular to a lithium battery sealing test device. Background Art

[0002] The lithium battery sealing test device is a device specially used to test the sealing performance of lithium batteries. Its main function is to ensure that the lithium battery will not have problems such as electrolyte leakage and gas leakage during use, thereby ensuring the safety, performance and service life of the lithium battery. The operator carefully places the lithium battery to be tested on the lithium battery placement device of the platform. After placing the battery, the operator starts the mobile platform through the control button or computer program instruction. When the platform moves the lithium battery to the bottom of the detector and stops steadily, the detector automatically starts the detection program to detect it. However, during the test, the lithium battery is usually exposed. The exposed lithium battery is easily affected by external environmental factors, which may cause the performance of the internal material of the battery to change, thereby affecting its sealing performance. In addition, the platform needs to be manually started and stopped during the test. Due to the subjectivity and inaccuracy of manual operation, there may be a certain deviation in its position each time the platform is started and stopped. This may cause the placement of the lithium battery under the detector to be inaccurate, thereby affecting the relative position relationship between the detector and the battery, and reducing the repeatability and comparability of the test results. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0004] In view of the above problems and / or the problems existing in the existing lithium battery sealing test device, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that during detection, lithium batteries are usually exposed to the outside, and the exposed lithium batteries are easily affected by external environmental factors. In addition, the platform needs to be manually started and stopped during detection, and its position may have a certain deviation.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a lithium battery sealing test device, comprising a sealing assembly, comprising a sealing member, wherein the sealing member comprises a sealing door, a rotating column, a limiting wheel, a limiting block, and a torsion spring, wherein the rotating column is plugged into one side of the sealing door, the limiting wheel is fixed to one end of the rotating column, the limiting block is located on one side of the limiting wheel, and the torsion spring is fixed to one side of the limiting block;

[0007] The pushing assembly is arranged on one side of the closing member, and includes a pushing member, including a pushing plate, a pushing block, a pushing frame, a rotating rod, a gear and a rack. The pushing plate is arranged on one side of the closing member, the pushing block is fixed to the top of the pushing plate, the pushing frame is hinged to the top of the pushing block, the rotating rod is hinged to one end of the pushing frame, the gear is fixed to one side of the rotating rod, the rack is located at the bottom of the gear, and the gear and the rack are meshed.

[0008] As a preferred solution of the lithium battery sealing test device described in the present invention, wherein: the closing assembly also includes a support member, which is arranged on the closing door, a rotating plate is fixed on one side of the closing door, an arc surface block is provided on one side of the rotating plate, the rotating plate and the arc surface block are hinged, a positioning plate is provided on one side of the arc surface block, and the positioning plate and the arc surface block are hinged.

[0009] As a preferred solution of the lithium battery sealing test device described in the present invention, a first spring is fixed to one side of the arc block, a support plate is fixed to one end of the first spring, the support plate is fixed to the top of the positioning plate, and a baffle is fixed to the top of the positioning plate.

[0010] As a preferred solution of the lithium battery sealing test device described in the present invention, wherein: a shift bar is fixed to one side of the limit block, a protective cover is provided on the outer side of the shift bar, the shift bar and the protective cover are movably connected, a first pulley is provided on the outer side of the rotating column, a belt is provided on the outer side of the first pulley, and a second pulley is provided inside the belt.

[0011] As a preferred solution of the lithium battery sealing test device described in the present invention, the pushing assembly further comprises a movable part, which is arranged on the second pulley, a movable rod is fixed to one side of the second pulley, an extrusion rod is provided at one end of the movable rod, the extrusion rod and one end of the movable rod are hinged, the extrusion rod is hinged to one end of the rack, and a protective plate is provided on one side of the extrusion rod.

[0012] As a preferred solution of the lithium battery sealing test device described in the present invention, a slider is fixed to the bottom of the rack, a positioning bar is inserted into one side of the slider, the slider and the positioning bar are movably connected, and a second spring is fixed to one side of the slider.

[0013] As a preferred solution of the lithium battery sealing test device of the present invention, a pulley is provided at one end of the rack, a connecting rod is sleeved on the outside of the pulley, the pulley and the connecting rod are hinged, and the connecting rod is fixed to one end of the rack.

[0014] As a preferred solution of the lithium battery sealing test device described in the present invention, wherein: a sliding frame is provided on the outer side of the pulley, the pulley slides in the sliding frame, a positioning block is provided on the outer side of the rotating rod, and the positioning block and the rotating rod are rotatably connected through a rotating shaft.

[0015] As a preferred solution of the lithium battery sealing test device described in the present invention, it also includes a main body component, which is arranged on the push plate, including a detection table and a testing machine, the detection table is fixed on one side of the push plate, and the testing machine is mounted on the outside of the detection table.

[0016] As a preferred solution of the lithium battery sealing test device of the present invention, a base is fixed at the bottom of the tester.

[0017] The beneficial effects of the present invention are: during testing, a closed door can be used to seal the lithium battery, and the door can drive the test platform to move when it is opened and closed, without the need for manual start and stop. The closed door can effectively isolate external environmental factors such as temperature, humidity, dust, etc. from interfering with the lithium battery and the testing process. When the closed door is opened and closed, the test platform can be driven to move accurately, avoiding the position deviation caused by manual start and stop of the platform. During each test, the lithium battery can be accurately placed in a fixed position below the detector, ensuring the consistency of the relative position relationship between the detector and the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0019] Figure 1 This is the overall structure diagram of the lithium battery sealing test device.

[0020] Figure 2 This is the overall cross-sectional structure diagram of the lithium battery sealing test device.

[0021] Figure 3 This is a partial enlarged structural diagram of point C in 2 of the lithium battery sealing test device.

[0022] Figure 4 This is a structural diagram of the test bench for the lithium battery sealing test device.

[0023] Figure 5 This is a diagram of the gear structure of the lithium battery sealing test device.

[0024] Figure 6 This is a diagram of the push plate structure of the lithium battery sealing test device.

[0025] Figure 7 Lithium battery sealing test device Figure 6 A partial enlarged structural diagram of point A in the middle.

[0026] Figure 8 This is a structural diagram of the closed door of the lithium battery sealing test device.

[0027] Figure 9 Lithium battery sealing test device Figure 8 A partial enlarged structural diagram of point B in the middle. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Reference Figures 2 to 9 , which is the first embodiment of the present invention, provides a lithium battery sealing test device, which includes a sealing component 200, a pushing component 300 and a main body component 100. The three can cooperate to use a sealing door to seal the lithium battery during testing, and drive the test platform to move when opening and closing.

[0031] The closing assembly 200 includes a closing member 201, which includes a closing door 201a, a rotating column 201b, a limiting wheel 201c, a limiting block 201d and a torsion spring 201e. The rotating column 201b is inserted into one side of the closing door 201a, the limiting wheel 201c is fixed to one end of the rotating column 201b, the limiting block 201d is located on one side of the limiting wheel 201c, and the torsion spring 201e is fixed to one side of the limiting block 201d.

[0032] After placing the lithium battery on the testing table 101, by closing the closed door 201a, a handle is provided on one side of the closed door 201a, which is convenient for the user to move the closed door 201a. When the closed door 201a moves, it will drive the rotating column 201b to rotate. The rotating column 201b is plugged into the testing machine 102. The rotating column 201b is rotatably connected to the testing machine 102 through a rotating shaft. When the rotating column 201b rotates, it will drive the limiting wheel 201c to rotate, and when the rotating column 201b rotates, it will also drive the testing table 101 to move. After the closed door 201a is completely closed, the testing table 101 will also move to the bottom of the testing machine 102. In order to prevent the closed door 201a from closing automatically after opening, the setting of the limit block 201d can be used to The limiting wheel 201c is limited, so that the closed door 201a can be limited. A transparent inspection window is provided on one side of the closed door 201a, which is convenient for the user to observe the detection status of the lithium battery. After the detection is completed, the limiting block 201d is moved. The limiting block 201d is hinged to the inner wall of the testing machine 102. The limiting block 201d can apply a twisting force to the torsion spring 201e when moving. The limiting block 201d moves and separates from the limiting wheel 201c, thereby releasing the limit on the limiting wheel 201c. At this time, the closed door 201a can return to its original position and close. Then the limiting block 201d is released, and the force of the rotation of the torsion spring 201e can drive the limiting block 201d to re-engage with the limiting wheel 201c for next use.

[0033] The pushing assembly 300 is arranged on one side of the closing member 201, and includes a pushing member 301, including a pushing plate 301a, a pushing block 301b, a pushing frame 301c, a rotating rod 301d, a gear 301e and a rack 301f. The pushing plate 301a is arranged on one side of the closing member 201, the pushing block 301b is fixed to the top of the pushing plate 301a, the pushing frame 301c is hinged to the top of the pushing block 301b, the rotating rod 301d is hinged to one end of the pushing frame 301c, the gear 301e is fixed to one side of the rotating rod 301d, the rack 301f is located at the bottom of the gear 301e, and the gear 301e and the rack 301f are engaged.

[0034] When the rotating column 201b rotates, it can drive the rack 301f to move. At this time, the movement of the rack 301f can drive the gear 301e to rotate. The rotation of the gear 301e will drive the rotating rod 301d to rotate. The rotation of the rotating rod 301d can squeeze the push frame 301c to make it move. The movement of the push frame 301c will drive the push block 301b to move. The movement of the push block 301b will drive the push plate 301a to move. The movement of the push plate 301a can drive the detection platform 101 to move. When the closed door 201a is opened, the detection platform 101 can be moved to the side of the tester in the testing machine 102, which is convenient for the user to place the lithium battery. When the closed door 201a is closed, the detection platform 101 can move the lithium battery to the bottom of the tester in the testing machine 102, so that it can be tested. A pneumatic clamp is provided on the detection platform 101 for fixing the lithium battery. The detection platform 101 belongs to the existing technology and will not be elaborated on again.

[0035] Example 2

[0036] Reference Figures 2 to 9 , which is the second embodiment of the present invention, and is based on the previous embodiment.

[0037] Specifically, the closing assembly 200 also includes a support member 202, which is arranged on the closing door 201a. A rotating plate 202a is fixed to one side of the closing door 201a, and an arc block 202b is provided on one side of the rotating plate 202a. The rotating plate 202a and the arc block 202b are hinged. A positioning plate 202c is provided on one side of the arc block 202b, and the positioning plate 202c and the arc block 202b are hinged.

[0038] When the closed door 201a moves, the rotating plate 202a can be driven to move, and the movement of the rotating plate 202a can drive the arc block 202b to move. After the limit on the closed door 201a is released, the arc block 202b returns to its original position to drive the rotating plate 202a to move, and the movement of the rotating plate 202a can drive the closed door 201a to close. The positioning plate 202c is fixed to the inner wall of the testing machine 102. The setting of the positioning plate 202c can support the arc block 202b to prevent the arc block 202b from deflecting.

[0039] Specifically, a first spring 202d is fixed to one side of the arc block 202b, a support plate 202e is fixed to one end of the first spring 202d, the support plate 202e is fixed to the top of the positioning plate 202c, and a baffle 202f is fixed to the top of the positioning plate 202c.

[0040] When the arc block 202b moves, a pulling force can be applied to the first spring 202d, and the rebound force of the first spring 202d can drive the arc block 202b to return to its original position. The setting of the support plate 202e can support the first spring 202d to prevent the first spring 202d from deflecting. When the arc block 202b returns to its original position, the setting of the baffle 202f can limit the moving position of the arc block 202b to prevent the arc block 202b from moving excessively and causing the closed door 201a to flip into the testing machine 102.

[0041] Specifically, a shift bar 202g is fixed to one side of the limit block 201d, a protective cover 202h is provided on the outer side of the shift bar 202g, the shift bar 202g and the protective cover 202h are movably connected, a first pulley 202i is provided on the outer side of the rotating column 201b, a belt 202j is provided on the outer side of the first pulley 202i, and a second pulley 202k is provided inside the belt 202j.

[0042] The setting of the shift bar 202g makes it convenient for the user to move the limit block 201d. The protective cover 202h is fixed to one side of the testing machine 102. The setting of the protective cover 202h can support the shift bar 202g to prevent the shift bar 202g from being offset. When the rotating column 201b rotates, it can drive the first pulley 202i to rotate. The rotation of the first pulley 202i can drive the belt 202j to rotate. The rotation of the belt 202j can drive the second pulley 202k to rotate. The rotation of the second pulley 202k can drive the rack 301f to move. The first pulley 202i and the second pulley 202k are both rotatably connected to the inner wall of the testing machine 102 through a rotating shaft.

[0043] Specifically, the pushing assembly 300 also includes a movable part 302, which is arranged on the second pulley 202k. A movable rod 302a is fixed to one side of the second pulley 202k, and an extrusion rod 302b is provided at one end of the movable rod 302a. The extrusion rod 302b is hinged to one end of the movable rod 302a, and the extrusion rod 302b is hinged to one end of the rack 301f. A protective plate 302c is provided on one side of the extrusion rod 302b.

[0044] When the second pulley 202k rotates, it can drive the movable rod 302a to rotate. When the movable rod 302a rotates, it can drive the squeezing rod 302b to move. The movement of the squeezing rod 302b can squeeze the rack 301f, thereby driving the rack 301f to move. The protective plate 302c is fixed to the inner wall of the testing machine 102. The setting of the protective plate 302c can protect the squeezing rod 302b.

[0045] Specifically, a slider 302d is fixed to the bottom of the rack 301f, a positioning bar 302e is inserted into one side of the slider 302d, the slider 302d and the positioning bar 302e are movably connected, and a second spring 302f is fixed to one side of the slider 302d.

[0046] A sliding groove corresponding to the slider 302d is provided in the testing machine 102. When the rack 301f moves, the slider 302d can be driven to slide in the sliding groove. At this time, the movement of the slider 302d can apply an extrusion force to the second spring 302f. After the extrusion of the rack 301f is released, the rebound force of the second spring 302f can drive the slider 302d to return to its original position. The positioning bar 302e is fixed to the inner wall of the sliding groove. The setting of the positioning bar 302e can support the slider 302d to prevent the slider 302d from deviating during movement.

[0047] Example 3

[0048] Reference Figures 1 to 9 , which is the third embodiment of the present invention, is based on the first two embodiments.

[0049] Specifically, a pulley 302g is provided at one end of the rack 301f, a connecting rod 302h is sleeved on the outer side of the pulley 302g, the pulley 302g and the connecting rod 302h are hinged, and the connecting rod 302h is fixed to one end of the rack 301f.

[0050] When the rack 301f moves, it can drive the connecting rod 302h to move, and the connecting rod 302h will drive the pulley 302g to move. At this time, the movement of the pulley 302g can support one end of the rack 301f to prevent one end of the rack 301f from deflecting.

[0051] Specifically, a sliding frame 302i is provided on the outside of the pulley 302g, and the pulley 302g slides in the sliding frame 302i. A positioning block 302j is provided on the outside of the rotating rod 301d, and the positioning block 302j and the rotating rod 301d are rotatably connected through a rotating shaft.

[0052] The sliding frame 302i is fixed to the inner wall of the testing machine 102. The setting of the sliding frame 302i can support the pulley 302g to prevent the pulley 302g from offsetting during movement. The positioning block 302j is fixed to the inner wall of the testing machine 102. The setting of the positioning block 302j can support the rotating rod 301d.

[0053] Specifically, it also includes a main body component 100, which is arranged on the push plate 301a, including a detection table 101 and a testing machine 102. The detection table 101 is fixed to one side of the push plate 301a, and the testing machine 102 is sleeved on the outside of the detection table 101.

[0054] The testing table 101 is a basic platform for placing lithium batteries. The lithium battery placement device on the testing table 101 can firmly carry and fix the lithium batteries to be tested, ensuring that the lithium batteries will not shake, displace or fall during the movement and testing process, providing a stable foundation for subsequent accurate testing. The testing machine 102 is the core equipment for directly performing sealing tests on lithium batteries. The testing machine 102 performs specific testing operations on the lithium batteries located below it according to different testing principles and methods.

[0055] Specifically, a base 103 is fixed at the bottom of the testing machine 102 .

[0056] The base 103 provides stable physical support for the entire device, ensuring that it can maintain a stable state during the detection process, thereby ensuring the accuracy and reliability of the detection. A button is provided on the base 103 for controlling the power on and off of the entire lithium battery sealing test device. After pressing the power button to turn on the power, the various components of the device start to power on and enter the standby or initialization state, preparing for subsequent detection operations.

[0057] When in use, the closed door 201a can be opened by moving the handle on one side of the closed door 201a. When the closed door 201a moves, the rotating plate 202a can be driven to move. The movement of the rotating plate 202a can drive the arc block 202b to move. The movement of the arc block 202b can exert a pulling force on the first spring 202d. At this time, in order to prevent the rebound force of the first spring 202d from driving the arc block 202b to return to its original position, the closed door 201 can be locked by engaging the limit block 201d with the limit wheel 201c. a is limited, when the closed door 201a moves, it can drive the rotating column 201b to rotate, and when the rotating column 201b rotates, it will drive the first pulley 202i to rotate, and the rotation of the first pulley 202i can drive the belt 202j to rotate, and the rotation of the belt 202j can drive the second pulley 202k to rotate, and the rotation of the second pulley 202k can drive the movable rod 302a to rotate, and when the movable rod 302a rotates, it can drive the extrusion rod 302b to move, and the rack 301f can be adjusted by the movement of the extrusion rod 302b. The rack 301f is squeezed, thereby driving the rack 301f to move. When the rack 301f moves, it can drive the slider 302d to slide in the slide groove. At this time, the movement of the slider 302d can apply a squeezing force to the second spring 302f, and the movement of the rack 301f drives the connecting rod 302h to move. The connecting rod 302h drives the pulley 302g to move by moving. At this time, the movement of the pulley 302g can support one end of the rack 301f to prevent one end of the rack 301f from deflecting, and the movement of the rack 301f can drive The gear 301e rotates, and the rotation of the gear 301e drives the rotating rod 301d to rotate. The rotation of the rotating rod 301d can squeeze the push frame 301c to make it move. The movement of the push frame 301c drives the push block 301b to move. The movement of the push block 301b drives the push plate 301a to move. The movement of the push plate 301a can drive the detection table 101 to move. When the closed door 201a is opened, the detection table 101 can be moved to the side of the tester in the testing machine 102, which is convenient for the user to place the lithium battery.

[0058] After the placement is completed, the limit block 201d is driven to move by moving the dial bar 202g. The limit block 201d can apply a twisting force to the torsion spring 201e when moving, and the limit block 201d moves and separates from the limit wheel 201c, thereby releasing the limit of the limit wheel 201c. At this time, the rebound force of the first spring 202d can drive the arc block 202b to return to its original position. The return of the arc block 202b to its original position can drive the rotating plate 202a to move, and the movement of the rotating plate 202a can drive the closed door 201a to close, and the closed door 201a can be closed. When the door 201a is closed, the rotating column 201b will be driven to reverse, and the squeeze on the rack 301f will be released. Then, the rebound force of the second spring 302f can drive the slider 302d to return to its original position, and the slider 302d drives the rack 301f to return to its original position. At this time, the testing table 101 can move the lithium battery to the bottom of the tester in the testing machine 102 so that it can be tested. Then, the dial 202g is released, and the rotation force of the torsion spring 201e can drive the limit block 201d and the limit wheel 201c to re-engage for the next use.

[0059] It should be noted that the above embodiments are only used 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lithium battery sealing test device, characterized by: include, A closing assembly (200) comprises a closing member (201), wherein the closing member (201) comprises a closing door (201a), a rotating column (201b), a limiting wheel (201c), a limiting block (201d) and a torsion spring (201e), wherein the rotating column (201b) is plugged into one side of the closing door (201a), the limiting wheel (201c) is fixed to one end of the rotating column (201b), the limiting block (201d) is located on one side of the limiting wheel (201c), and the torsion spring (201e) is fixed to one side of the limiting block (201d); A pushing assembly (300) is arranged on one side of the closure member (201), comprising a pushing member (301), comprising a pushing plate (301a), a pushing block (301b), a pushing frame (301c), a rotating rod (301d), a gear (301e) and a rack (301f), wherein the pushing plate (301a) is arranged on one side of the closure member (201), the pushing block (301b) is fixed to the top of the pushing plate (301a), the pushing frame (301c) is hinged to the top of the pushing block (301b), the rotating rod (301d) is hinged to one end of the pushing frame (301c), the gear (301e) is fixed to one side of the rotating rod (301d), the rack (301f) is located at the bottom of the gear (301e), and the gear (301e) and the rack (301f) are meshed; The closing assembly (200) further comprises a support member (202) arranged on the closing door (201a); a rotating plate (202a) is fixed to one side of the closing door (201a); a curved surface block (202b) is arranged on one side of the rotating plate (202a); the rotating plate (202a) and the curved surface block (202b) are hinged; a positioning plate (202c) is arranged on one side of the curved surface block (202b); the positioning plate (202c) and the curved surface block (202b) are hinged; A first spring (202d) is fixed to one side of the arc surface block (202b), a support plate (202e) is fixed to one end of the first spring (202d), the support plate (202e) is fixed to the top of the positioning plate (202c), and a baffle (202f) is fixed to the top of the positioning plate (202c); A shift bar (202g) is fixed to one side of the limit block (201d), a protective cover (202h) is sleeved on the outer side of the shift bar (202g), the shift bar (202g) and the protective cover (202h) are movably connected, a first pulley (202i) is sleeved on the outer side of the rotating column (201b), a belt (202j) is sleeved on the outer side of the first pulley (202i), and a second pulley (202k) is arranged inside the belt (202j); The pushing assembly (300) further includes a movable member (302) disposed on the second pulley (202k), a movable rod (302a) being fixed to one side of the second pulley (202k), an extrusion rod (302b) being provided at one end of the movable rod (302a), the extrusion rod (302b) being hinged to one end of the movable rod (302a), the extrusion rod (302b) being hinged to one end of the rack (301f), and a protective plate (302c) being provided at one side of the extrusion rod (302b); A slider (302d) is fixed to the bottom of the rack (301f), a positioning bar (302e) is plugged into one side of the slider (302d), the slider (302d) and the positioning bar (302e) are movably connected, and a second spring (302f) is fixed to one side of the slider (302d); It also includes a main body component (100) arranged on the push plate (301a), including a detection table (101) and a testing machine (102), wherein the detection table (101) is fixed to one side of the push plate (301a), and the testing machine (102) is sleeved on the outside of the detection table (101).

2. The lithium battery sealing test device according to claim 1, wherein: A pulley (302g) is provided at one end of the rack (301f), a connecting rod (302h) is sleeved on the outside of the pulley (302g), the pulley (302g) and the connecting rod (302h) are hinged, and the connecting rod (302h) is fixed to one end of the rack (301f).

3. The lithium battery sealing test device according to claim 2, wherein: A sliding frame (302i) is sleeved on the outside of the pulley (302g), and the pulley (302g) slides in the sliding frame (302i). A positioning block (302j) is sleeved on the outside of the rotating rod (301d), and the positioning block (302j) and the rotating rod (301d) are rotatably connected via a rotating shaft.

4. The lithium battery sealing test device according to claim 3, wherein: A base (103) is fixed to the bottom of the testing machine (102).

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