Battery hot pressing formation device and pressure maintaining method thereof

Abstract

The present invention discloses a battery hot pressing forming device, which includes a pressure-holding mechanism and a lifting assembly. The pressure-holding mechanism includes a base frame, a pressure-holding drive mechanism, and at least two pressure plates. The pressure-holding drive mechanism is mounted on the base frame, and the pressure plates are mounted on the output end of the pressure-holding drive mechanism. A pressure-holding gap is formed between two adjacent pressure plates. The pressure plates are driven by the pressure-holding drive mechanism to move closer to or farther from each other to increase or decrease the pressure-holding gap. The pressure-holding gap corresponds one-to-one to the lifting assembly. The lifting assembly includes a first lifting member, a supporting film, and a second lifting member. The first lifting member is liftably disposed above one of the two pressure plates and clamps one side of the supporting film. The second lifting member is liftably disposed above the other of the two pressure plates and clamps the other side of the supporting film. The supporting film forms a supporting portion in the pressure-holding gap that can support a workpiece. The battery hot pressing forming device of the present invention can replace the lifting member of the battery air bag and place the battery in and out of the processing station. The present invention also discloses a pressure-holding method.

Description

Technical Field

[0001] The present invention relates to the field of battery manufacturing equipment, and in particular to a battery hot pressing formation device. Background Art

[0002] Batteries are common power supply products. They need to go through multiple processes for processing. Batteries are generally wrapped with air bags. The specific structure of the air bag can be found in Chinese patent CN209329062U, which records a lithium battery air bag structure. The air bag includes an upper diaphragm and a lower diaphragm. The upper diaphragm and / or lower diaphragm of the air bag are provided with a number of strip-shaped pits. The several strip-shaped pits are parallel to each other and perpendicular to the battery body. In order to place the air bag in each workstation for processing, for example, when pressurization is required, the battery wrapped with the air bag is placed between two plywood for pressurization. In order to facilitate feeding and removing materials, the air bag structure is generally provided with a pulling strip for easy pulling. The battery can be taken out or placed in the processing station by pulling the pulling strip externally, such as by a robot.

[0003] The existing battery processing process involves first holding the airbag-wrapped battery under pressure, then vacuuming and sealing it, and finally removing the original pull-tabs from the airbag. To achieve a better pressure-holding effect, a further processing step is required after this process to hold the battery under pressure once the pull-tabs have been removed. However, without the pull-tabs, the battery now has no pull-tabs. Without these pull-tabs, how external devices, such as robotic arms, can place the battery in or remove it from the pressure-holding station presents a challenge in this production process.

[0004] In order to solve the above problems, it is necessary to provide a battery hot pressing forming device that can be used for maintaining pressure for batteries without pull bars. Summary of the Invention

[0005] An object of the present invention is to provide a battery hot pressing forming device that can replace the lifting piece of the battery air bag to place the battery in and out of the processing station and can automatically maintain the pressure of the battery.

[0006] Another object of the present invention is to provide a pressure maintaining method that can replace the lifting piece of the battery air bag and place the battery in and out of the processing station.

[0007] In order to achieve the above-mentioned purpose, the battery hot pressing formation device provided by the present invention includes a pressure holding mechanism and a lifting assembly, the pressure holding mechanism includes a base frame, a pressure holding drive mechanism and at least two pressure plates, the pressure holding drive mechanism is installed on the base frame, the pressure plate is installed at the output end of the pressure holding drive mechanism, and a pressure holding gap is formed between two adjacent pressure plates. The pressure plates are driven by the pressure holding drive mechanism to approach or move away from each other so that the pressure holding gap increases or decreases, and the pressure holding gap corresponds one-to-one to the lifting assembly, and the lifting assembly includes a first lifting member, a carrying film and a second lifting member. The first lifting member can be lifted and lowered above one of the two pressure plates and clamp one side of the carrying film, and the second lifting member can be lifted and lowered above the other of the two pressure plates and clamp the other side of the carrying film. The carrying film forms a carrying portion that can carry a workpiece in the pressure holding gap, and the lifting and lowering of the first lifting member and the second lifting member enable the carrying film to lift and lower the workpiece and allow the workpiece to enter or exit the pressure holding gap.

[0008] By combining the pressure-holding mechanism and the lifting assembly, the pressure-holding mechanism includes a base frame, a pressure-holding drive mechanism and at least two pressure plates. The pressure-holding drive mechanism is installed on the base frame, and the pressure plate is installed on the output end of the pressure-holding drive mechanism. A pressure-holding gap is formed between the two adjacent pressure plates. The pressure plates approach or move away from each other under the drive of the pressure-holding drive mechanism to increase or decrease the pressure-holding gap. The two pressure plates achieve pressure holding or evacuation of the workpiece by approaching or separating. The pressure-holding gap corresponds one-to-one to the lifting assembly. Since the pressure plates are arranged in an array, a pressure-holding gap is formed between the pressure plates. Each pressure-holding gap can accommodate a workpiece. Each workpiece requires a group of lifting assemblies to lift it. Therefore, the number of lifting assemblies corresponds one-to-one to the number of pressure-holding gaps, thereby ensuring that each workpiece is lifted. The lifting assembly includes a first lifting member, a carrying film and a second lifting member. The first lifting member can be lifted and lowered above one of the two pressure plates and clamp one side of the carrying film. The second lifting member can be lifted and lowered above the other of the two pressure plates and clamp the other side of the carrying film. The carrying film forms a carrying portion that can carry the workpiece in the pressure holding gap. By lifting and lowering the first lifting member and the second lifting member, the carrying film can lift and lower the workpiece and allow the workpiece to enter or exit the pressure holding gap. In other words, the lifting assembly can be lifted and lowered relative to the pressure plate, and the carrying portion of the carrying film can lift and lower the workpiece. The lifting assembly forms a wrapping and supporting effect on the workpiece. When material feeding is required, the lifting of the lifting assembly can drive the carrying film to rise to the position of exiting the pressure holding gap, so as to facilitate the external picking device to put the workpiece in. When pressure maintenance is required, the descent of the pulling assembly can drive the carrying film down to the pressure holding gap and drive the workpiece into the pressure holding gap. The carrying film is very thin and flexible. Using this feature, the two pressure plates are equivalent to directly acting on the workpiece and maintaining pressure on the workpiece, that is, the carrying film is used to replace the lifting part of the battery air bag and cooperate with the lifting assembly to put the battery in and out of the processing station.

[0009] Preferably, the pressure-maintaining drive device includes a pushing drive device and a flexible rope, one end of the flexible rope is connected to one side of the base frame, and the other side of the flexible rope is connected to the pushing plate at the output end of the pushing drive device. The middle part of the flexible rope is connected in series with all the pressure plates, and the pushing plate pushes all the pressure plates closer to each other under the drive of the pushing drive device, or separates all the pressure plates by pulling the flexible rope.

[0010] Preferably, the pressure-maintaining drive device also includes a guide assembly, the guide assembly includes a guide rod and a guide hole, the guide rod is arranged along the direction of pressing of the pressure plate, all the pressure plates are provided with the guide holes corresponding to the guide rods, and the pressure plates are slidably arranged on the guide rods through the guide holes.

[0011] Preferably, the first lifting member and the second lifting member each include a lifting rod and a mounting assembly for fixing the supporting film, the lower end of the lifting rod is connected to the mounting assembly, and the supporting film on the mounting assembly is lifted and lowered by lifting the lifting rod.

[0012] Specifically, the winding assembly includes an upper winding member and a lower winding member, the lifting rod is connected to the upper winding member, the lower winding member is installed on the pressure plate, the two free ends of the supporting film are respectively fixed to the lower winding member of the first lifting member and the lower winding member of the second lifting member in the same group, and the middle part of the supporting film is wound between the upper winding member of the first lifting member and the upper winding member of the second lifting member in the same group, so that the two upper winding members and the two lower winding members together form a pulley group structure.

[0013] Specifically, the upper arrangement extends outward to form a clamping block, the pressure plate is provided with a clamping groove corresponding to the clamping block, and the clamping block is arranged in the clamping groove in a plug-in manner.

[0014] Specifically, the upper surrounding member and the lower surrounding member are both rod structures with circular cross-sections.

[0015] Specifically, the battery hot pressing formation device further includes a fixing member for common lifting, and the lifting rod of the first lifting member and the lifting rod of the adjacent group of the second lifting members are connected to the fixing member.

[0016] In order to achieve the above-mentioned object, the present invention provides a pressure maintaining method based on a battery hot pressing formation device, which comprises the following steps:

[0017] (S1) Establish the above-mentioned battery hot pressing forming device; (S2) The first lifting member and the second lifting member have a discharge position where the carrying part is in an ascending state and a feeding position where the carrying part is in a descending state through lifting, and when the carrying part is in the discharge position, the workpiece is placed in the carrying part; (S3) The carrying part descends from the discharge position to the feeding position and drives the workpiece down to the pressure holding gap between the two pressure plates; (S4) The pressure plates approach each other under the drive of the pressure holding drive mechanism, and the two pressure plates maintain pressure on the workpiece by pressing; (S5) The pressure plates separate from each other under the drive of the pressure holding drive mechanism so that the two pressure plates are separated, and the carrying part rises from the feeding position to the discharge position and drives the workpiece up to evacuate the pressure holding gap.

[0018] Preferably, the pressure maintaining method further comprises the following steps:

[0019] Step (S2) further includes establishing a picking device, which picks up the workpiece and places it into the carrying portion; step (S5) further includes the picking device clamping the pressure-maintained workpiece out of the pressure-maintaining gap.

[0020] The carrying part of the carrying film can wrap and support the workpiece. The carrying film is very thin and flexible. By utilizing this feature, the two pressure plates are equivalent to directly acting on the workpiece and maintaining the pressure of the workpiece. That is, the carrying film is used to replace the lifting part of the battery air bag and cooperate with the lifting assembly to place the battery in and out of the processing station. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a perspective view of the battery hot pressing formation device of the present invention.

[0022] Figure 2 It is a three-dimensional view from another angle of the battery hot pressing forming device of the present invention.

[0023] Figure 3 It is a three-dimensional view from another angle of the battery hot pressing forming device of the present invention.

[0024] Figure 4 It is a perspective view of the interior of the battery hot pressing formation device of the present invention.

[0025] Figure 5 It is a perspective view of the interior of the battery hot pressing formation device of the present invention.

[0026] Figure 6 It is a partial side view of the battery hot pressing formation device of the present invention.

[0027] Figure 7 This is a state diagram of the battery hot pressing forming device of the present invention when no workpiece is placed.

[0028] Figure 8 This is a diagram of the battery hot pressing formation device of the present invention, with the first pulling member and the second pulling member in the pulling state.

[0029] Figure 9 This is a diagram of the battery hot pressing formation device of the present invention, with the first pulling member and the second pulling member in a state after being lowered. DETAILED DESCRIPTION

[0030] See also Figures 1 to 9, showing the specific structure of the battery hot pressing formation device of the present invention, the battery hot pressing formation device of the present invention includes a pressure holding mechanism 1 and a pulling component 2, the pressure holding mechanism 1 includes a base frame 13, a pressure holding drive mechanism 14 and at least two pressure plates 11, the pressure holding drive mechanism 14 is installed on the base frame 13, the pressure plate 11 is installed at the output end of the pressure holding drive mechanism 14, and a pressure holding gap 12 is formed between two adjacent pressure plates 11. The pressure plates 11 approach or move away from each other under the drive of the pressure holding drive mechanism 14 to increase or decrease the pressure holding gap 12. The two pressure plates 11 achieve pressure holding or withdrawal of the workpiece 20 by approaching or separating. In this embodiment, a plurality of pressure plates 11 are provided, and the plurality of pressure plates 11 are arranged at equal intervals, so that a plurality of workpieces 20 can be pressure-maintained at one time, and the pressure-maintaining gaps 12 correspond one-to-one to the lifting components 2. Since the pressure plates 11 are arranged in an array, a pressure-maintaining gap 12 is formed between the pressure plates 11 and the pressure plates 11. Each pressure-maintaining gap 12 can accommodate a workpiece 20, and each workpiece 20 requires a set of lifting components 2 to lift it. Therefore, the number of lifting components 2 corresponds one-to-one to the number of pressure-maintaining gaps 12, thereby ensuring that each workpiece 20 is lifted. The lifting assembly 2 includes a first lifting member 21, a carrying film 22 and a second lifting member 23. The first lifting member 21 can be raised and lowered above one of the two pressure plates 11 and clamps one side of the carrying film 22. The second lifting member 23 can be raised and lowered above the other of the two pressure plates 11 and clamps the other side of the carrying film 22. For example, there is a pressure holding gap 12 between the two pressure plates 11. The first lifting member 21 is provided on the pressure plate 11 on the left side of the pressure holding gap 12, and the second lifting member 23 is provided on the pressure plate 11 on the right side of the pressure holding gap 12. The first lifting member 21 and the second lifting member 23 form a group. Due to the continued stacking of the pressure plates 11, a group of first lifting members 21 and second lifting members 23 are also provided in the adjacent pressure holding gap 12. The two adjacent groups of first lifting members 21 and second lifting members 23 are located on the same pressure plate 11.The carrying film 22 forms a carrying portion 221 that can carry the workpiece 20 in the pressure holding gap 12. By lifting and lowering the first lifting member 21 and the second lifting member 23, the carrying film 22 can lift and lower the workpiece 20 and allow the workpiece 20 to enter or exit the pressure holding gap 12. In other words, the lifting component 2 can lift and lower relative to the pressure plate 11. The carrying portion 221 of the carrying film 22 can form a wrapping and supporting effect on the workpiece 20. When feeding is required, the lifting of the lifting component 2 can drive the carrying film 22 to rise to exit the pressure holding gap 1 2, facilitating the placement of workpiece 20 by an external pickup device. When pressure maintenance is required, the lowering of the lifting assembly 2 drives the carrier film 22 down into the pressure-maintaining gap 12, thereby bringing the workpiece 20 into the pressure-maintaining gap 12, i.e., between the two pressure plates. The carrier film 22 is very thin and flexible. Leveraging this property, the two pressure plates 11 effectively act directly on and maintain pressure on the workpiece 20. In other words, the carrier film 22 replaces the lifting element of a traditional battery air bag and cooperates with the lifting assembly 2 to place and remove batteries from the processing station. More specifically, as follows:

[0031] See also Figures 1 to 3 The pressure-maintaining drive device 141 includes a pushing drive device 141 and a flexible rope 142. One end of the flexible rope 142 is connected to one side of the base frame 13, and the other side of the flexible rope 142 is connected to the pushing plate 141a at the output end of the pushing drive device 141. The middle part of the flexible rope 142 connects all the pressure plates 11 in series. The flexible rope 142 is a rope structure that connects all the pressure plates 11 in series. It will not interfere with the pressure plates 11 when the pressure plates 11 are pressed together. When the pressure plates 11 need to be separated, the flexible rope 142 can be straightened and driven to separate by combining the reset movement of the pushing drive device 141. The pressure plates 11 are connected to the flexible rope 142 at equal intervals. Under the drive of the pushing drive device 141, the pushing plate 141a pushes all the pressure plates 11 closer to each other and gradually stacks, or separates all the pressure plates 11 by pulling the flexible rope 142.

[0032] See also Figures 3 to 5 The pressure-maintaining drive device 14 further includes a guide assembly 143, which includes a guide rod 1431 and a guide hole 1432. The guide rod 1431 is arranged along the direction in which the pressure plates 11 are pressed together. All pressure plates 11 have guide holes 1432 corresponding to the guide rods 1431. The pressure plates 11 are slidably mounted on the guide rods 1431 through the guide holes 1432. The guide assembly 143 can cooperate with the movement of the flexible rope 142 to move the pressure plates 11 along a fixed trajectory.

[0033] See also Figures 4 to 9The first lifting member 21 and the second lifting member 23 have the same specific structure. The first lifting member 21 and the second lifting member 23 each include a lifting rod 211 and a mounting assembly 212 for fixing the carrier film 22. The lower end of the lifting rod 211 is connected to the mounting assembly 212. By lifting the lifting rod 211, the carrier film 22 on the mounting assembly 212 is moved up and down. The battery hot pressing formation device 100 also includes a fixing member 24 for joint lifting. The lifting rod 211 of the first lifting member 21 and the lifting rod 211 of the adjacent group of second lifting members 23 are connected to the fixing member 24. The setting of the fixing member 24 enables the first lifting member 21 and the adjacent second lifting member 23 to be connected together into an integrated structure. When the external picking device picks up, it can simultaneously pull the first lifting member 21 and the adjacent second lifting member 23 to move up and down together.

[0034] See also Figures 4 to 9 The winding assembly 212 includes an upper winding member 2121 and a lower winding member 2122. The lifting rod 211 is connected to the upper winding member 2121, and the lower winding member 2122 is installed on the pressing plate 11. The two free ends of the carrying film 22 are respectively fixed to the lower winding member 2122 of the first lifting member 21 and the lower winding member 2122 of the second lifting member 23 in the same group. The middle part of the carrying film 22 is wound between the upper winding member 2121 of the first lifting member 21 and the upper winding member of the second lifting member 23 in the same group, so that the two upper winding members 2121 and the two lower winding members 2122 together form a pulley group structure (see details). Figure 8 ), that is, the lower member 2122 acts as a fixed pulley, the upper member 2121 acts as a movable pulley, and the supporting film 22 acts as a rope. This structure can achieve the purpose of saving effort and reduce the damage of the supporting film 22.

[0035] See also Figure 8 The upper mounting member 2121 and the lower mounting member 2122 are arranged opposite to each other, and a gap is formed between the upper mounting member 2121 and the lower mounting member 2122 to press the carrying film 22. That is, when the upper mounting member 2121 descends to the lower mounting member 2122, the upper mounting member 2121 is naturally pressed on the lower mounting member 2122 and presses the carrying film 22, thereby achieving positioning.

[0036] See also Figure 8 The lower surrounding member 2122 of the first lifting member 21 and the lower surrounding member 2122 of the adjacent group of second lifting members 23 are connected together to form an integrated base body, and the bottom end surface of the base body is a planar structure 2122a, so that the base body can be installed on the top surface of the pressure plate 11.

[0037] See also Figures 4 to 9The upper component 2121 extends outward to form a clamping block 2121a. The pressure plate 11 has a clamping groove 11a corresponding to the clamping block. The clamping block 2121a is inserted and removed from the clamping groove 11a. Since the upper component 2121 and the lower component 2122 can be separated and combined, the cooperation between the clamping block 2121a and the clamping groove 11a can enable the clamping block and the clamping groove to be engaged when the upper component 2121 is lowered to the top of the lower component 2122, or the clamping block and the clamping groove to be unengaged when the upper component 2121 is withdrawn from the lower component 2122. Preferably, both the upper component 2121 and the lower component 2122 are rod structures with circular cross-sections.

[0038] In summary, please refer to Figures 1 to 9 The working process of the battery hot pressing formation device 100 of the present invention is described in detail:

[0039] The first lifting member 21 and the second lifting member 23 are lifted and lowered to have a discharge position where the supporting portion 221 is in an ascending state and a feed position where the supporting portion 221 is in a descending state. When the supporting portion 221 is not ascended, the state is as follows. Figure 4 As shown, when the carrying portion 221 is in the discharge position, the external picking device picks up the workpiece 20 and places it into the carrying portion 221 of the carrying film 22 (the placing direction is as shown in FIG. Figure 7 The workpiece 20 is supported on the supporting portion 221 (the state is as shown in FIG. Figure 8 As shown); by the descent of the first lifting member 21 and the second lifting member 23, the bearing portion 221 descends from the discharge position to the feed position and drives the workpiece 20 to descend to the pressure holding gap 12 between the two pressing plates 11; the two pressing plates 11 press the workpiece 20 to maintain pressure (the pressure holding direction is as shown in FIG. Figure 9 The two pressing plates 11 are separated, and the bearing portion 221 rises from the feeding position to the discharging position and drives the workpiece 20 to rise to evacuate the pressure holding gap 12 (evacuation direction as shown in FIG. Figure 9 The picking device removes the pressure-maintained workpiece 20 from the pressure-maintaining gap 12 by clamping.

[0040] By combining the pressure-holding mechanism 1 and the lifting component 2, the pressure-holding mechanism 1 includes at least two pressure plates 11, and a pressure-holding gap 12 is formed between the two adjacent pressure plates 11. The two pressure plates 11 achieve pressure holding or evacuation of the workpiece 20 by approaching or separating. The pressure-holding gap 12 corresponds one-to-one to the lifting component 2. Since the pressure plates 11 are arranged in an array, a pressure-holding gap 12 is formed between the pressure plates 11. Each pressure-holding gap 12 can accommodate a workpiece 20. Each workpiece 20 requires a group of lifting components 2 to lift it. Therefore, the number of lifting components 2 corresponds one-to-one to the number of pressure-holding gaps 12, thereby ensuring that each workpiece 20 is lifted. The lifting assembly 2 includes a first lifting member 21, a carrying film 22 and a second lifting member 23. The first lifting member 21 can be lifted and lowered above one of the two pressure plates 11 and clamp one side of the carrying film 22. The second lifting member 23 can be lifted and lowered above the other of the two pressure plates 11 and clamp the other side of the carrying film 22. The carrying film 22 forms a carrying portion 221 that can carry the workpiece 20 in the pressure holding gap 12. By lifting and lowering the first lifting member 21 and the second lifting member 23, the carrying film 22 can lift and lower the workpiece 20 and allow the workpiece 20 to enter or exit the pressure holding gap 12. In other words, the lifting assembly 2 can be lifted and lowered relative to the pressure plate 11. The carrying film The bearing portion 221 of 22 can wrap and support the workpiece 20. When feeding is required, the lifting of the pulling component 2 can drive the bearing film to rise to the position of exiting the pressure holding gap 12, so as to facilitate the external picking device to place the workpiece 20. When pressure is required, the descent of the pulling component 2 can drive the bearing film to descend into the pressure holding gap 12 and drive the workpiece 20 into the pressure holding gap 12. The bearing film is very thin and flexible. Using this feature, the two pressure plates 11 are equivalent to directly acting on the workpiece 20 and maintaining pressure on the workpiece 20, that is, the bearing film 22 is used to replace the lifting part of the battery air bag and cooperate with the lifting component 2 to place the battery in and out of the processing station.

[0041] See also Figures 1 to 9 A pressure maintaining method based on a battery hot pressing formation device 100 comprises the following steps:

[0042] (S1) Establishing the battery hot pressing formation apparatus 100 described above;

[0043] (S2) The first lifting member 21 and the second lifting member 23 are lifted and lowered to have a discharge position in which the support portion 221 is in an ascending state and a loading position in which the support portion 221 is in a descending state. When the support portion 221 is in the discharge position, the workpiece 20 is placed in the support portion 221;

[0044] (S3) The supporting portion 221 descends from the discharge position to the feed position and drives the workpiece 20 down to the pressure-maintaining gap 12 between the two pressing plates 11;

[0045] (S4) The pressure plates 11 are driven by the pressure-maintaining drive mechanism 14 to move closer to each other, and the two pressure plates 11 maintain pressure on the workpiece 20 by pressing together;

[0046] ( S5 ) The pressure plates 11 are driven by the pressure-maintaining drive mechanism 14 to separate from each other, so that the two pressure plates 11 are separated, and the supporting portion 221 rises from the feeding position to the discharging position and drives the workpiece 20 to rise to evacuate the pressure-maintaining gap 12 .

[0047] Specifically, the pressure holding method also includes the following steps: step (S2) further includes establishing a picking device, the picking device picks up the workpiece 20 and places it into the carrying portion 221; step (S5) further includes the picking device clamping the pressure-holding workpiece 20 out of the pressure holding gap 12.

[0048] Arranged available,

[0049] A pressure maintaining method based on a battery hot pressing formation device 100 includes the following steps:

[0050] (S1) Establishing the battery hot pressing formation apparatus 100 described above;

[0051] (S2) establishing a picking device, the picking device picks up the workpiece 20 and places it into the carrying portion 221, the first lifting member 21 and the second lifting member 23 are lifted and lowered to have a discharge position in which the carrying portion 221 is in an ascending state and a feed position in which the carrying portion 221 is in a descending state, and when the carrying portion 221 is in the discharge position, the workpiece 20 is placed into the carrying portion 221;

[0052] (S3) The supporting portion 221 descends from the discharge position to the feed position and drives the workpiece 20 down to the pressure-maintaining gap 12 between the two pressing plates 11;

[0053] (S4) The pressure plates 11 are driven by the pressure-maintaining drive mechanism 14 to move closer to each other, and the two pressure plates 11 maintain pressure on the workpiece 20 by pressing together;

[0054] ( S5 ) The pressure plates 11 are driven by the pressure-maintaining drive mechanism 14 to separate from each other, so that the two pressure plates 11 are separated, and the supporting portion 221 rises from the feeding position to the discharging position and drives the workpiece 20 to rise to evacuate the pressure-maintaining gap 12 .

[0055] The carrying portion 221 of the carrying film 22 can wrap and support the workpiece 20. The carrying film is very thin and flexible. By utilizing this feature, the two pressure plates 11 are equivalent to directly acting on the workpiece 20 and maintaining the pressure of the workpiece 20. That is, the carrying film 22 is used to replace the lifting part of the battery air bag and cooperate with the lifting component 2 to place the battery in and out of the processing station.

[0056] The above disclosure is merely a preferred embodiment of the present invention and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A battery hot pressing formation device, characterized in that: The lifting mechanism comprises a pressure-holding mechanism, a lifting assembly and a fixing member for lifting together, the pressure-holding mechanism comprises a base frame, a pressure-holding driving mechanism and at least two pressure plates, the pressure-holding driving mechanism is installed on the base frame, the pressure plate is installed on the output end of the pressure-holding driving mechanism, a pressure-holding gap is formed between two adjacent pressure plates, the pressure plates are driven by the pressure-holding driving mechanism to move closer to or farther away from each other so as to increase or decrease the pressure-holding gap, and the pressure-holding gap corresponds one-to-one to the lifting assembly, the lifting assembly comprises a first lifting member, a carrying film and a second lifting member, the first lifting member can be lifted and lowered above one of the two pressure plates and clamp one side of the carrying film, the second lifting member can be lifted and lowered above the other of the two pressure plates and clamp the other side of the carrying film, the carrying film forms a carrying portion that can carry a workpiece in the pressure-holding gap, and the lifting and lowering of the first lifting member and the second lifting member enables the carrying film to lift and lower the workpiece and enable the workpiece to enter or exit the pressure-holding gap; The lifting rod of the first lifting member and the lifting rod of the adjacent group of the second lifting members are connected to the fixing member.

2. The battery hot pressing formation device according to claim 1, characterized in that: The pressure-maintaining drive mechanism includes a pushing drive device and a flexible rope, one end of the flexible rope is connected to one side of the base frame, and the other side of the flexible rope is connected to the pushing plate at the output end of the pushing drive device. The middle part of the flexible rope is connected in series with all the pressure plates. The pushing plate pushes all the pressure plates closer to each other under the drive of the pushing drive device, or separates all the pressure plates by pulling the flexible rope.

3. The battery hot pressing formation device according to claim 1, characterized in that: The pressure-maintaining drive mechanism also includes a guide assembly, which includes a guide rod and a guide hole. The guide rod is arranged along the direction of pressing of the pressure plate. All the pressure plates are provided with the guide holes corresponding to the guide rods. The pressure plates are slidably arranged on the guide rods through the guide holes.

4. The battery hot pressing formation device according to claim 1, characterized in that: The first lifting member and the second lifting member each include a lifting rod and a mounting assembly for fixing the supporting film. The lower end of the lifting rod is connected to the mounting assembly, and the supporting film on the mounting assembly is lifted and lowered by lifting the lifting rod.

5. The battery hot pressing formation device according to claim 4, characterized in that: The winding assembly includes an upper winding member and a lower winding member, the lifting rod is connected to the upper winding member, the lower winding member is installed on the pressure plate, the two free ends of the supporting film are respectively fixed to the lower winding member of the first lifting member and the lower winding member of the second lifting member in the same group, and the middle part of the supporting film is wound between the upper winding member of the first lifting member and the upper winding member of the second lifting member in the same group, so that the two upper winding members and the two lower winding members together form a pulley group structure.

6. The battery hot pressing formation device according to claim 5, characterized in that: The upper arrangement extends outward to form a clamping block, and the pressing plate is provided with a clamping groove corresponding to the clamping block, and the clamping block is arranged in the clamping groove in a plug-in manner.

7. The battery hot pressing formation device according to claim 5, characterized in that: The upper surrounding member and the lower surrounding member are both rod structures with circular cross sections.

8. A pressure maintaining method based on a battery hot pressing formation device, characterized in that: The steps include: (S1) Establishing a battery hot pressing formation device according to any one of claims 1 to 7; (S2) the first lifting member and the second lifting member are lifted and lowered to have a discharge position where the support portion is in an ascending state and a loading position where the support portion is in a descending state, and when the support portion is in the discharge position, the workpiece is placed in the support portion; (S3) the carrying portion descends from the discharge position to the feed position and drives the workpiece down to the pressure-maintaining gap between the two pressing plates; (S4) the pressing plates are driven by the pressure-maintaining driving mechanism to move closer to each other, and the two pressing plates maintain pressure on the workpiece by pressing together; (S5) The pressure plates are driven by the pressure-maintaining drive mechanism to separate from each other, so that the two pressure plates are separated, and the supporting part rises from the feeding position to the discharging position and drives the workpiece to rise to evacuate the pressure-maintaining gap.

9. The pressure maintaining method according to claim 8, wherein: The following steps are also included: Step (S2) further includes establishing a picking device, which picks up the workpiece and places it into the carrying portion; step (S5) further includes the picking device clamping the pressure-maintained workpiece out of the pressure-maintaining gap.

Images