A bottom retracting mechanism for a battery isolation tube

Abstract

The present invention provides a battery isolation tube bottom retracting mechanism, comprising a fixed bottom plate and a moving top plate, the battery isolation tube is rotatably suspended vertically at the bottom of the top plate; a strip groove is arranged on the bottom plate, a right-angle groove is arranged on the upper edge of either side of the strip groove, and an isolation tube channel for the lower part of the battery isolation tube to pass through is formed between the vertical right-angle side of the right-angle groove and the side wall of the strip groove on the opposite side; an auxiliary retracting device is also arranged in the isolation tube channel, the auxiliary retracting device is arranged opposite to the right-angle groove, the auxiliary retracting device comprises a comb plate and a first progressive lifting inclined plane which are arranged adjacent to each other in sequence along the moving route of the top plate, when working, the outer peripheral edge of the battery isolation tube is always in close contact with the vertical right-angle side of the right-angle groove, and at the same time, the outer peripheral edge of the battery isolation tube is contacted and squeezed with the comb plate in sequence to form a crease on the outer peripheral edge of the battery isolation tube, and is contacted and squeezed with the first progressive lifting inclined plane to fold the lower part of the battery isolation tube evenly inward and upward along the crease and stow it.

Description

Technical Field

[0001] The invention belongs to the field of battery processing equipment, in particular to a bottom contraction mechanism of a battery isolation cylinder. Background Art

[0002] In alkaline batteries, the separator tube is an important component that physically separates the positive and negative electrodes. The separator tube is usually made by winding the separator paper into a tube, shrinking the lower part of the tube to form the bottom of the tube, and finally sealing the bottom of the tube at high temperature.

[0003] The existing battery isolation tube bottom contraction mechanism includes a fixed bottom plate and a traveling top plate arranged relatively at the upper and lower parts, a rotating shaft fixedly suspended on the top plate, the isolation tube is sleeved on the rotating shaft, and the lower end of the isolation tube extends out of the rotating shaft; a strip groove for the lower part of the isolation tube to pass through is arranged on the bottom plate directly below the isolation tube along the traveling route of the top plate; a right-angle groove is arranged on the upper edge of either side of the strip groove along the traveling route of the top plate, the height of the horizontal right-angle side of the right-angle groove is equal to the lower end of the rotating shaft in the isolation tube, and an isolation tube channel is formed between the vertical right-angle side of the right-angle groove and the side wall of the strip groove on the opposite side. During operation, when the isolation tube passes through the isolation tube channel, its outer side wall moves forward closely against the vertical right-angle side of the right-angle groove, and the right-angle groove squeezes its lower part, so that the lower part of the isolation tube gradually folds inward and contracts at the bottom of the rotating shaft, thereby realizing the shrinkage of the bottom of the isolation tube, which is convenient for hot pressing and shaping the bottom of the isolation tube in the next process.

[0004] In the existing battery isolation tube bottom contraction mechanism, the isolation tube only generates an inward folding force through the right-angle groove. During the rotation of the isolation tube, the peripheral wall of the isolation tube is squeezed by the right-angle groove, so that the lower part of the isolation tube is deformed, folded inward and stacked. However, since the isolation tube paper itself has a certain toughness, the folds formed on the lower part of the isolation tube when it is folded inward and stacked are disordered, resulting in uneven thickness of the isolation tube bottom and a high defective rate. Summary of the invention

[0005] The present invention aims to provide a battery isolation tube bottom shrinkage mechanism, which has a simple structure and pre-forms creases on the bottom of the isolation tube so that the bottom of the isolation tube can be better folded evenly, thereby reducing the defective rate.

[0006] A battery isolation cylinder bottom retracting mechanism comprises a fixed bottom plate and a moving top plate, a self-rotating shaft is vertically suspended at the bottom of the top plate, a battery isolation cylinder is tightly arranged outside the shaft, and the lower end of the battery isolation cylinder extends out of the shaft;

[0007] A strip groove is provided on the bottom plate directly below the battery isolating cylinder along the travel route of the top plate, and a right angle groove is provided on the upper edge of either side of the strip groove along the travel route of the top plate, and an isolating cylinder channel for the lower part of the battery isolating cylinder to pass through is formed between the vertical right angle side of the right angle groove and the side wall of the strip groove on the opposite side;

[0008] The horizontal right-angle side of the right-angle groove abuts against the lower end surface of the rotating shaft, and the width of the horizontal right-angle side of the right-angle groove is smaller than the diameter of the battery isolation cylinder;

[0009] An auxiliary contraction device is also provided in the isolation tube channel. The auxiliary contraction device is arranged opposite to the right-angle groove. When working, the outer peripheral edge of the moving battery isolation tube is always in close contact with the vertical right-angle side of the right-angle groove and rotates forward.

[0010] The auxiliary retraction device comprises a comb plate and a first progressive lifting slope which are arranged in sequence and closely along the travel route of the top plate;

[0011] The comb teeth of the comb plate are fixedly arranged in the strip groove horizontally and horizontally, and the upper surface of each comb tooth is arranged to be inclined downward from the side wall of the strip groove located on the opposite side of the right-angle groove toward the right-angle groove. When working, the outer periphery of the battery isolation cylinder moved to the comb plate and the comb teeth of the comb plate are in contact and squeezed with each other, and the comb teeth are evenly distributed, and the center line of the comb teeth at the contact and squeezing position of the outer periphery of the battery isolation cylinder and each comb tooth overlaps with the circumference bisector of the outer periphery of the battery isolation cylinder. The length of the comb plate is limited to at least allow the battery isolation cylinder to rotate one circle above it;

[0012] During operation, the outer peripheral edge of the battery isolation cylinder moved to the first progressive lifting slope contacts and squeezes the first progressive lifting slope;

[0013] The height of the contact and extrusion position of the first progressive lifting slope with the peripheral wall of the battery isolation cylinder gradually increases along the travel route of the top plate from a height lower than the lower end surface of the rotating shaft, so that the outer peripheral edge of the lower part of the battery isolation cylinder gradually bends inward and upward until the outer peripheral edge of the battery isolation cylinder bends upward to abut against the lower end surface of the rotating shaft.

[0014] The lower part of the battery isolating cylinder of the present invention is embedded in the isolating cylinder channel on the bottom plate and rotates forward along the isolating cylinder channel. The outer peripheral edge of the moving battery isolating cylinder always sticks to the vertical right-angled side of the right-angled groove and rotates forward. The right-angled groove can squeeze and form a circular fold on the outer peripheral edge of the battery isolating cylinder; at the same time, the outer peripheral edge of the battery isolating cylinder moved to the comb plate and the comb teeth of the comb plate are in contact and squeezed with each other, and the comb plate can form several axial indentations on the circular fold on the outer peripheral edge of the battery isolating cylinder in equal parts; after passing through the comb plate, the battery isolating cylinder moves to the first progressive lifting inclined plane, and the outer peripheral edge of the battery isolating cylinder and the first progressive lifting inclined plane are in contact with each other. The progressive lifting slopes contact and squeeze each other, and the lower part of the battery isolation cylinder is continuously folded inward and upward as the height of the first progressive lifting slope gradually increases until it is tightly attached to the lower end surface of the rotating shaft. In this process, since the battery isolation cylinder is always in a forward rotating state, the inwardly folded battery isolation cylinder will be folded along the circumference at the bottom of the isolation cylinder with the circular crease as the outer circle. During the folding process, the battery isolation cylinder will be folded with the intersection point of each axial indentation and the circular crease as the coincidence point, thereby realizing orderly folding of the lower part of the battery isolation cylinder, making the thickness of the bottom of the isolation cylinder formed more uniform, and greatly reducing the defective rate.

[0015] Preferably, the auxiliary contraction device includes a second progressive lifting slope, a comb plate and a first progressive lifting slope which are sequentially connected along the travel route of the top plate; when working, the outer periphery of the battery isolation cylinder moved to the second progressive lifting slope contacts and squeezes each other with the second progressive lifting slope; the height of the contact and squeezing position of the second progressive lifting slope with the outer periphery of the battery isolation cylinder gradually increases along the travel route of the top plate, and the highest height of the contact and squeezing position of the second progressive lifting slope with the outer periphery of the battery isolation cylinder is lower than the lowest height of the contact and squeezing position of the first progressive lifting slope with the outer periphery of the battery isolation cylinder, thereby playing a role of transition contraction.

[0016] In the specific implementation process, the progressive lifting slope can be a plane. The structure is simple and easy to manufacture.

[0017] In the specific implementation process, the progressive lifting slopes can also be arc surfaces, so that the folding and folding of the battery isolation cylinder are smoother.

[0018] Preferably, a wide groove is provided on the bottom plate along the path of the top plate, and a stopper block is detachably embedded in the wide groove along the path of the top plate, and the stopper block and the inner side wall of the wide groove are enclosed to form the strip groove. At this time, stoppers of different widths can be selected according to the diameter of the battery isolation cylinder corresponding to different types of batteries, so as to achieve the purpose of adjusting the width of the strip groove and the isolation cylinder channel. Furthermore, a right-angle groove is provided on the upper edge of the stopper block to reduce the difficulty of forming the stopper block.

[0019] Preferably, the lower end surface of the rotating shaft is in the shape of a cap. Further, the rotating shaft is composed of a hollow shaft and a central top rod embedded in the lower end opening of the hollow shaft, the lower end surface of the central top rod is in the shape of a cap, and the cap-shaped lower end surface of the central top rod is protruding from the lower end surface of the hollow shaft, and the horizontal right-angle side of the right-angle groove abuts against the lower end surface of the central top rod.

[0020] Preferably, a comb plate embedding groove is provided on the bottom plate, and the comb plate is detachably fixed in the comb plate embedding groove, so that the comb plate can be easily replaced.

[0021] Preferably, when the bottom plate is longer, an isolation cylinder discharge moving channel for the lower shrunk battery isolation cylinder to pass through is also provided behind the travel route of the rotating shaft of the first progressive lifting slope, so that the lower shrunk battery isolation cylinder can pass through the bottom plate smoothly for the next step of bottom hot compression molding operation.

[0022] In the specific implementation process, a first progressive lifting slope making way groove and a second progressive lifting slope making way groove can be opened in the strip groove and below the right-angle groove as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the bottom retracting mechanism of the battery isolation tube of Example 1 or Example 2;

[0024] Figure 2 A top view of the bottom retracting mechanism of the battery isolation tube of Example 1 or Example 2;

[0025] Figure 3 It is an axial cross-sectional structural diagram of the battery isolation tube of the present invention in a natural state;

[0026] Figure 4 Move the battery isolation cylinder to Figure 2 When the AA line is in the middle, the bottom contraction mechanism of the battery isolation tube of Example 1 is along Figure 2 The cross-sectional structure diagram of the AA line;

[0027] Figure 5 Move the battery isolation cylinder to Figure 2 When the middle BB line is reached, the bottom retracting mechanism of the battery isolation tube of Example 1 is along Figure 2 The cross-sectional structure diagram of the middle BB line;

[0028] Figure 6 Move the battery isolation cylinder to Figure 2 When the CC line is in the middle, the bottom retracting mechanism of the battery isolation tube of Example 1 is along Figure 2 Cross-sectional structure diagram of the center CC line;

[0029] Figure 7 Move the battery isolation cylinder to Figure 2When the DD line is in the middle, the bottom contraction mechanism of the battery isolation tube of Example 1 is along Figure 2 The cross-sectional structure diagram of the middle DD line;

[0030] Figure 8 Move the battery isolation cylinder to Figure 2 When the EE line is in the middle, the bottom contraction mechanism of the battery isolation tube of Example 1 is along Figure 2 The cross-sectional structure diagram of the EE line;

[0031] Fig. 9 Move the battery isolation cylinder to Figure 2 When the FF line is in the middle, the bottom retraction mechanism of the battery isolation tube of Example 1 is along Figure 2 The cross-sectional structure diagram of the middle FF line;

[0032] Fig.10 It is a structural schematic diagram of the battery isolation tube of Example 1 or Example 2 in an unfolded state;

[0033] Fig.11 Move the battery isolation cylinder to Figure 2 When the DD line is in the middle, the bottom contraction mechanism of the battery isolation tube of Example 2 is along Figure 2 The cross-sectional structure diagram of the middle DD line;

[0034] Fig.12 It is a cross-sectional view of the discharge channel of the isolation cylinder of Example 1 or Example 2. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are now described in detail with reference to the accompanying drawings: Example 1

[0036] Combination Figure 1 to Figure 7 A battery isolation tube bottom retracting mechanism comprises a fixed bottom plate 1 and a moving top plate 2, a self-rotating shaft 3 is vertically suspended at the bottom of the top plate 2, a battery isolation tube 4 is tightly arranged on the outer surface of the shaft 3, and the lower end of the battery isolation tube 4 extends out of the shaft 3;

[0037] A strip groove 11 is provided on the bottom plate 1 directly below the battery isolating cylinder 4 along the path of the top plate 2, and a right angle groove 12 is provided on the upper edge of any side of the strip groove 11 along the path of the top plate 2, and an isolating cylinder channel 110 for the lower part of the battery isolating cylinder 4 to pass through is formed between the vertical right angle side 121 of the right angle groove 12 and the strip groove side wall 111 on the opposite side;

[0038] The horizontal right-angle side 122 of the right-angle groove 12 abuts against the lower end surface 30 of the rotating shaft 3, and the width D' of the horizontal right-angle side 122 of the right-angle groove 12 is smaller than the diameter d' of the battery isolation cylinder 4;

[0039] The isolation tube channel 110 is also provided with an auxiliary contraction device 5, which is arranged opposite to the right-angle groove 12. When working, the outer peripheral edge of the moving battery isolation tube 4 is always in close contact with the vertical right-angle side 121 of the right-angle groove and rotates forward;

[0040] The auxiliary retracting device 5 comprises a comb plate 51 and a first progressive lifting slope 52 which are arranged adjacent to each other in sequence along the travel route of the top plate 2;

[0041] The comb teeth 511 of the comb plate 51 are transversely and horizontally fixedly arranged in the strip groove 11, and the upper surface of each comb tooth 511 is inclined downward from the strip groove side wall 111 located on the opposite side of the right-angle groove 12 to the right-angle groove 12. When working, the outer periphery of the battery isolation cylinder 4 moved to the comb plate 51 and the comb teeth 511 of the comb plate are in contact and squeezed with each other, and the comb teeth 511 are evenly distributed, and the center line of the comb teeth 511 at the contact and squeezing position of the outer periphery of the battery isolation cylinder 4 and each comb tooth 511 overlaps with the circumference bisector of the outer periphery of the battery isolation cylinder 4. At this time, the height of the contact and squeezing position of each comb tooth 511 with the outer periphery of the battery isolation cylinder 4 ( Figure 4 "H" refers to: the contour line of the contact and extrusion position between the comb teeth 511 and the outer periphery of the battery isolation cylinder 4 is consistent with the height of the horizontal right-angle side 122 of the right-angle groove, and the length S' of the comb plate 51 is limited to at least allow the battery isolation cylinder 4 to rotate one circle above it;

[0042] During operation, the outer periphery of the battery isolation cylinder 4 moved to the first progressive lifting slope 52 contacts and squeezes the first progressive lifting slope 52;

[0043] The height of the contact and extrusion position of the first progressive lifting slope 52 with the peripheral wall of the battery isolation cylinder ( Figure 5 and Figure 6 The "H'" in the figure refers to: the contour line of the contact and extrusion position between the first progressive lifting slope 52 and the peripheral wall of the battery isolation cylinder) is gradually raised along the travel route of the top plate 2 from a height lower than the lower end surface 30 of the rotating shaft 3, so that the outer peripheral edge of the lower part of the battery isolation cylinder 4 is gradually bent inward and upward, until the outer peripheral edge of the battery isolation cylinder 4 is bent upward to abut against the lower end surface 30 of the rotating shaft 3;

[0044] The first progressive lifting slope 52 is a plane.

[0045] During operation, the battery isolation cylinder 4 rotates forward along the travel route of the top plate 2. When the battery isolation cylinder 4 moves to the bottom plate 1, the lower part of the battery isolation cylinder 4 is embedded in the isolation cylinder channel 110 on the bottom plate 1 and continues to rotate forward along the isolation cylinder channel 110. The outer peripheral edge of the moving battery isolation cylinder 4 always sticks to the vertical right-angle side 121 of the right-angle groove 12 and rotates forward. The right-angle groove 12 can squeeze the outer peripheral edge of the battery isolation cylinder 4 to form a circular fold (such as Fig.10 As shown, Fig.10 The "O" in the figure refers to the circular fold when the isolation tube is in the expanded state); at the same time, the outer periphery of the battery isolation tube 4 moved to the comb plate 51 and the comb teeth 511 of the comb plate are in contact and squeezed with each other, and the comb plate 51 can equally divide the circular fold on the outer periphery of the battery isolation tube 4 to form a plurality of axial indentations L (such as Fig.10 As shown); after passing through the comb plate 51, the battery isolation cylinder 4 moves to the first progressive lifting slope 52, and the outer peripheral edge of the battery isolation cylinder 4 contacts and squeezes the first progressive lifting slope 52. As the height of the first progressive lifting slope 52 gradually increases, the lower part of the battery isolation cylinder 4 is continuously folded inward and upward until it is tightly attached to the lower end surface 30 of the rotating shaft 3. During this process, since the battery isolation cylinder 4 is always in a forward rotating state, the inwardly folded battery isolation cylinder 4 will be folded along the circumference at the bottom of the isolation cylinder with the circular crease as the outer circle. During the folding process, the battery isolation cylinder 4 will be folded with the intersection point of each axial indentation and the circular crease as the coincidence point, thereby realizing the orderly folding of the lower part of the battery isolation cylinder, so that the thickness of the bottom of the isolation cylinder formed is more uniform, and the defective rate is greatly reduced.

[0046] Example 2

[0047] like Fig.11 As shown, different from the first embodiment, the first progressive lifting slope 52 is a circular arc surface.

[0048] Preferably, combined Figure 2 , Figure 8 and Fig. 9 The auxiliary retraction device 5 comprises a second progressive lifting slope 53, a comb plate 51 and a first progressive lifting slope 52 which are sequentially connected and arranged along the travel route of the top plate 2; when working, the outer periphery of the battery isolation cylinder 4 moved to the second progressive lifting slope 53 is in contact and extruded with the second progressive lifting slope 53; the height of the contact and extrusion position of the second progressive lifting slope 53 with the outer periphery of the battery isolation cylinder ( Figure 8 and Fig. 9The "H" in the figure refers to: the contour line of the contact and extrusion position between the second progressive lifting slope 53 and the outer periphery of the battery isolation cylinder) gradually rises along the travel path of the rotating shaft 3, and the highest height of the contact and extrusion position between the second progressive lifting slope 53 and the outer periphery of the battery isolation cylinder 4 is lower than the lowest height of the contact and extrusion position between the first progressive lifting slope 52 and the outer periphery of the battery isolation cylinder 4, which plays a role of transition contraction. Of course, the second progressive lifting slope 53 of the present invention can also be a plane or an arc surface.

[0049] Preferably, Figure 1 , Figure 2 , Figures 4 to 9 As shown, a wide groove is provided on the bottom plate 1 along the travel route of the rotating shaft 3, and a limit block 6 is detachably embedded in the wide groove along the travel route of the rotating shaft 3. The limit block 6 and the inner side wall of the wide groove are enclosed to form the strip groove 11. At this time, limit blocks 6 of different widths can be selected according to the diameter of the battery isolation tube 4 corresponding to different types of batteries, so as to achieve the purpose of adjusting the width of the strip groove 11 and the isolation tube channel 110. Of course, the strip groove 11 of the present invention can also be formed by directly providing the strip groove 11 on the bottom plate 1. Furthermore, a right-angle groove 12 is provided on the upper edge of the limit block 6. The difficulty of forming the limit block 6 is reduced.

[0050] Preferably, Figure 3 to Figure 9 As shown, the lower end surface 30 of the rotating shaft 3 is in the shape of a cap. Figure 3 to Figure 9 As shown, the rotating shaft 3 is composed of a hollow shaft 31 and a central push rod 32 embedded in the lower end opening of the hollow shaft 31. The lower end surface of the central push rod 32 is in the shape of a cap, and the cap-shaped lower end surface of the central push rod 32 protrudes from the lower end surface of the hollow shaft 31. The horizontal right-angle side 122 of the right-angle groove 12 abuts against the lower end surface of the central push rod 32. Of course, the rotating shaft 3 can also be a solid shaft.

[0051] Preferably, Figure 1 , 2 and Figure 4 As shown, a comb plate embedding groove is provided on the bottom plate 1, and the comb plate 51 is detachably fixed in the comb plate embedding groove, which is convenient for replacing the comb plate 51. Of course, the comb plate can also be directly installed in the strip groove 11.

[0052] Preferably, Figure 1 , Figure 2 and Fig.12 As shown, when the bottom plate 1 is longer, an isolation cylinder discharge channel 7 is also provided behind the axis travel route of the first progressive lifting ramp 52 for the lower shrunk battery isolation cylinder to pass through, so that the lower shrunk battery isolation cylinder 4 can pass through the bottom plate 1 smoothly to carry out the next step of bottom hot compression molding operation.

[0053] In the specific implementation process, the top plate 2 is a rotatable disc structure, and a rotating shaft 3 capable of self-rotation is suspended at the bottom of the top plate 2. The rotation of the top plate 2 drives the rotating shaft 3 to perform circular motion.

[0054] In the specific implementation process, a progressive lifting inclined surface giving way groove 112 (such as Figure 3 to Figure 9 as shown).

[0055] It should be noted that the height of the contact and extrusion position between each comb tooth 511 and the outer periphery of the battery isolation tube of the present invention is consistent with the height of the horizontal right-angled side 122 of the right-angled groove, which does not mean that the height of the contact and extrusion position between each comb tooth 511 and the outer periphery of the battery isolation tube is completely equal to the height of the horizontal right-angled side 122 of the right-angled groove. It is sufficient as long as "the axial indentation L formed by the comb plate 51 on the outer periphery of the battery isolation tube 4 and the circular fold O formed by the right-angled groove 12 on the outer periphery of the battery isolation tube 4 can intersect".

Claims

1. A battery isolation cylinder bottom retracting mechanism, comprising a fixed bottom plate and a moving top plate, a self-rotating shaft is vertically suspended at the bottom of the top plate, a battery isolation cylinder is tightly arranged outside the shaft, and the lower end of the battery isolation cylinder extends out of the shaft; A strip groove is provided on the bottom plate directly below the battery isolating cylinder along the travel route of the top plate, and a right angle groove is provided on the upper edge of either side of the strip groove along the travel route of the top plate, and an isolating cylinder channel for the lower part of the battery isolating cylinder to pass through is formed between the vertical right angle side of the right angle groove and the side wall of the strip groove on the opposite side; The horizontal right-angle side of the right-angle groove abuts against the lower end surface of the rotating shaft, and the width of the horizontal right-angle side of the right-angle groove is smaller than the diameter of the battery isolation cylinder; it is characterized in that: An auxiliary contraction device is also provided in the isolation tube channel. The auxiliary contraction device is arranged opposite to the right-angle groove. When working, the outer peripheral edge of the moving battery isolation tube is always in close contact with the vertical right-angle side of the right-angle groove and rotates forward. The auxiliary retraction device comprises a comb plate and a first progressive lifting slope which are arranged in sequence and closely along the travel route of the top plate; The comb teeth of the comb plate are fixedly arranged in the strip groove horizontally and horizontally, and the upper surface of each comb tooth is arranged to be inclined downward from the side wall of the strip groove located on the opposite side of the right-angle groove toward the right-angle groove. When working, the outer periphery of the battery isolation cylinder moved to the comb plate and the comb teeth of the comb plate are in contact and squeezed with each other, and the comb teeth are evenly distributed, and the center line of the comb teeth at the contact and squeezing position of the outer periphery of the battery isolation cylinder and each comb tooth overlaps with the circumference bisector of the outer periphery of the battery isolation cylinder. The length of the comb plate is limited to at least allow the battery isolation cylinder to rotate one circle above it; During operation, the outer peripheral edge of the battery isolation cylinder moved to the first progressive lifting slope contacts and squeezes the first progressive lifting slope; The height of the contact and extrusion position of the first progressive lifting slope with the peripheral wall of the battery isolation cylinder gradually increases along the travel route of the top plate from a height lower than the lower end surface of the rotating shaft, so that the outer peripheral edge of the lower part of the battery isolation cylinder gradually bends inward and upward until the outer peripheral edge of the battery isolation cylinder bends upward to abut against the lower end surface of the rotating shaft.

2. A battery isolation tube bottom retracting mechanism according to claim 1, characterized in that: The auxiliary contraction device includes a second progressive lifting slope, a comb plate and a first progressive lifting slope which are sequentially connected along the travel route of the top plate; when working, the outer periphery of the battery isolation cylinder moved to the second progressive lifting slope contacts and squeezes each other with the second progressive lifting slope; the height of the contact and squeezing position of the second progressive lifting slope with the outer periphery of the battery isolation cylinder gradually increases along the travel route of the top plate, and the highest height of the contact and squeezing position of the second progressive lifting slope with the outer periphery of the battery isolation cylinder is lower than the lowest height of the contact and squeezing position of the first progressive lifting slope with the outer periphery of the battery isolation cylinder.

3. A battery isolation tube bottom retracting mechanism according to claim 2, characterized in that: The second progressive lifting slope is a plane or an arc surface.

4. A battery isolation tube bottom retracting mechanism according to claim 1 or 2, characterized in that: The first progressive lifting slope is a plane or an arc surface.

5. The bottom retracting mechanism of a battery isolation tube according to claim 1, characterized in that: A wide groove is provided on the bottom plate along the travel route of the top plate, and a limit block is detachably embedded in the wide groove along the travel route of the top plate. The limit block and the inner side wall of the wide groove are enclosed to form the strip groove.

6. A battery isolation tube bottom retracting mechanism according to claim 1, characterized in that: The lower end surface of the rotating shaft is in a cap shape.

7. The battery isolation tube bottom retracting mechanism according to claim 1, characterized in that: The rotating shaft consists of a hollow shaft and a central push rod embedded in the lower end opening of the hollow shaft. The lower end surface of the central push rod is in the shape of a cap, and the cap-shaped lower end surface of the central push rod protrudes from the lower end surface of the hollow shaft. The horizontal right-angle side of the right-angle groove abuts against the lower end surface of the central push rod.

8. The battery isolation tube bottom retracting mechanism according to claim 1, characterized in that: A comb plate embedding groove is arranged on the bottom plate, and the comb plate is detachably fixed in the comb plate embedding groove.

9. The battery isolation tube bottom retracting mechanism according to claim 1, characterized in that: An isolating cylinder discharging moving channel for the battery isolating cylinder whose lower part has been shrunk to pass through is also provided behind the traveling route of the rotating shaft of the first progressive lifting slope.

10. The battery isolation tube bottom retracting mechanism according to claim 1, characterized in that: A progressive lifting inclined surface giving way groove is arranged in the strip groove and below the right-angle groove.

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