The lifting mechanism and method for battery pressure holding device

Abstract

This invention discloses a lifting-type loading and unloading mechanism for a battery pressure-holding device, comprising a pressure-holding mechanism and a lifting assembly. The pressure-holding mechanism includes at least two pressure plates, with a pressure-holding gap formed between adjacent pressure plates. Each pressure-holding gap corresponds to a lifting assembly. The lifting assembly includes a first lifting member, a carrier film, and a second lifting member. The first lifting member is vertically and elliptically positioned above one of the two pressure plates and clamps one side of the carrier film. The second lifting member is vertically and elliptically positioned above the other of the two pressure plates and clamps the other side of the carrier film. The carrier film forms a support portion capable of carrying a workpiece within the pressure-holding gap. The lifting and lowering of the first and second lifting members causes the carrier film to lift and lower, allowing the workpiece to enter or exit the pressure-holding gap. This lifting-type loading and unloading mechanism for the battery pressure-holding device can replace the lifting member of a battery air bag for placing and removing batteries from the processing station. This invention also discloses a loading and unloading method.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing equipment, and more particularly to a pull-up and drop-off mechanism for a battery pressure holding device. Background Technology

[0002] Batteries are common power supply products. Batteries require multiple processing steps. Batteries are generally wrapped in an air bag. The specific structure of the air bag can be found in Chinese Patent CN209329062U, which describes a lithium battery air bag structure. The air bag includes an upper diaphragm and a lower diaphragm. The upper diaphragm and / or the lower diaphragm of the air bag are provided with several strip-shaped recesses. The strip-shaped recesses are parallel to each other and perpendicular to the battery cell body. In order to place the air bag in various processing stations for processing, such as when pressurization is required, the battery wrapped in the air bag is placed between two clamps for pressurization. In order to facilitate feeding and unloading, the air bag structure is generally provided with a lifting strip for easy lifting. The battery can be taken out or placed into the processing station by lifting the lifting strip externally, such as by a robot.

[0003] The existing battery processing procedure involves first pressurizing the battery, which is encased in an air bag, then deflating and sealing it, and finally removing the original lifting strip from the air bag. To improve the pressurization effect, an additional processing step is required after the above steps: a final pressurization of the battery with the lifting strip removed. However, since the battery no longer has the lifting strip, how external devices, such as robotic arms, can place or remove the battery from the pressurization station without the lifting strip presents a challenge for this production process.

[0004] To solve the above problems, it is necessary to provide a pull-up type loading and unloading mechanism for a battery pressure holding device. Summary of the Invention

[0005] One object of the present invention is to provide a lifting-type loading and unloading mechanism for a battery pressure holding device that can replace the lifting component of a battery air bag for placing and removing batteries into and from the processing station.

[0006] Another object of the present invention is to provide a method for placing and removing batteries in a processing station that can replace the lifting component of the battery air bag.

[0007] To achieve the above objectives, the present invention provides a lifting-type loading and unloading mechanism for a battery pressure-holding device, comprising a pressure-holding mechanism and a lifting assembly. The pressure-holding mechanism includes at least two pressure plates, with a pressure-holding gap formed between adjacent pressure plates. The pressure-holding gap corresponds one-to-one with the lifting assembly. The lifting assembly includes a first lifting member, a carrier film, and a second lifting member. The first lifting member is vertically and flexibly disposed above one of the two pressure plates and clamps one side of the carrier film. The second lifting member is vertically and flexibly disposed above the other of the two pressure plates and clamps the other side of the carrier film. The carrier film forms a bearing portion capable of bearing a workpiece in the pressure-holding gap. By lifting and lowering the first and second lifting members, the carrier film carries the workpiece up and down, allowing the workpiece to enter or exit the pressure-holding gap.

[0008] By combining a pressure-holding mechanism and a lifting assembly, the pressure-holding mechanism includes at least two pressure plates, with a pressure-holding gap formed between adjacent pressure plates. The two pressure plates achieve pressure holding or removal of the workpiece by moving closer or separating. The pressure-holding gaps correspond one-to-one with the lifting assemblies. Since the pressure plates are arranged in an array, pressure-holding gaps are formed between the pressure plates. Each pressure-holding gap can accommodate one workpiece. Each workpiece requires a set of lifting assemblies for lifting. Therefore, the number of lifting assemblies corresponds one-to-one with the number of pressure-holding gaps, thereby ensuring that each workpiece is lifted. The lifting assembly includes a first lifting member, a carrier membrane, and a second lifting member. The first lifting member is vertically and elliptically positioned above one of the two pressure plates and clamps one side of the carrier membrane. The second lifting member is vertically and elliptically positioned above the other of the two pressure plates and clamps the other side of the carrier membrane. The carrier membrane forms a support portion capable of carrying the workpiece within the pressure-holding gap. By lifting and lowering the first and second lifting members, the carrier membrane carries the workpiece up and down, allowing the workpiece to enter or exit the pressure-holding gap. In other words, the lifting assembly is capable of lifting and lowering relative to the pressure plates, and the support portion of the carrier membrane can support the workpiece. The components form a wrapping and supporting function. When material needs to be fed, the lifting assembly can lift the carrier film to the position where it exits the pressure holding gap, thus facilitating the placement of the workpiece by the external picking device. When pressure holding is required, the lowering of the lifting assembly can lower the carrier film into the pressure holding gap and bring the workpiece into the pressure holding gap. The carrier film is very thin and flexible. Utilizing this characteristic, the two pressure plates act directly on the workpiece and hold the workpiece under pressure. That is, the carrier film replaces the lifting component of the battery gas bag and works in conjunction with the lifting assembly to put the battery into and take out the processing station.

[0009] Preferably, the first lifting member and the second lifting member each include a lifting rod and a winding assembly for fixing the carrier film. The lower end of the lifting rod is connected to the winding assembly, and the carrier film on the winding assembly is raised and lowered by lifting the lifting rod.

[0010] Specifically, the winding assembly includes an upper winding component and a lower winding component. The lifting rod is connected to the upper winding component, and the lower winding component is installed on the pressure plate. The two free ends of the bearing membrane are respectively fixed to the lower winding component of the first lifting component and the lower winding component of the second lifting component in the same group. The middle part of the bearing membrane is wound between the upper winding component of the first lifting component and the upper winding component of the second lifting component in the same group, so that the two upper winding components and the two lower winding components together form a pulley group structure.

[0011] Specifically, the upper winding component and the lower winding component are arranged opposite to each other, and a gap is formed between the upper winding component and the lower winding component to compress the bearing membrane.

[0012] Specifically, the lower winding component of the first lifting member and the lower winding component of the adjacent group of second lifting members are connected together to form an integral structure of the base body. The bottom end surface of the base body is a planar structure so that the base body can be installed on the top surface of the pressure plate.

[0013] Specifically, the upper part extends outward to form a locking block, and the pressure plate has a locking groove corresponding to the locking block. The locking block is inserted into the locking groove.

[0014] Specifically, both the upper and lower ramp components are rod structures with a circular cross-section.

[0015] Specifically, the lifting mechanism of the battery pressure holding device further includes a fixing member for joint lifting, wherein the lifting rod of the first lifting member and the lifting rod of the adjacent group of second lifting members are connected to the fixing member.

[0016] To achieve the above objectives, the present invention provides a lifting and placing method based on a battery pressure holding device using a lifting mechanism, which includes the following steps:

[0017] (S1) Establish the lifting and placing mechanism of the battery pressure holding device described above;

[0018] (S2) The first lifting member and the second lifting member have a discharge position where the bearing part is in a raised state and a feeding position where the bearing part is in a lowered state through lifting and lowering. When the bearing part is in the discharge position, the workpiece is placed into the bearing part.

[0019] (S3) The bearing part descends from the discharge position to the infeed position and drives the workpiece to descend to the pressure-holding gap between the two pressure plates;

[0020] (S4) The two pressure plates maintain pressure on the workpiece by pressing them together;

[0021] (S5) The two pressure plates separate, and the bearing part rises from the feeding position to the discharging position and drives the workpiece to rise to remove the pressure holding gap.

[0022] Preferably, the retrieval and placement method also includes the following steps:

[0023] Step (S2) further includes establishing a picking device, which picks up the workpiece and places it into the bearing portion; step (S5) further includes the picking device removing the pressurized workpiece from the pressurization gap by clamping.

[0024] The carrier membrane can wrap and support the workpiece. The carrier membrane is very thin and flexible. Taking advantage of this characteristic, the two pressure plates act directly on the workpiece and maintain pressure on it. That is, the carrier membrane replaces the lifting part of the battery air bag and works with the lifting assembly to put the battery into and take out the processing station. Attached Figure Description

[0025] Figure 1 This is a perspective view of the lifting and placing mechanism of the battery pressure holding device of the present invention.

[0026] Figure 2 This is a perspective view of the lifting and placing mechanism of the battery pressure holding device of the present invention from another angle.

[0027] Figure 3 This is a side view of the lifting and placing mechanism of the battery pressure holding device of the present invention.

[0028] Figure 4 This is a diagram showing the state of the lifting and placing mechanism of the battery pressure holding device of the present invention when the workpiece is not placed in.

[0029] Figure 5 This is a diagram showing the state of the lifting mechanism of the battery pressure holding device of the present invention, with the first lifting member and the second lifting member in the lifting position.

[0030] Figure 6 This is a diagram showing the lifting mechanism of the battery pressure holding device of the present invention, with the first lifting member and the second lifting member in a lowered state. Detailed Implementation

[0031] Please see Figures 1 to 6This paper illustrates the specific structure of the lifting-type pick-and-place mechanism 100 of the battery pressure holding device of the present invention. The lifting-type pick-and-place mechanism 100 of the battery pressure holding device of the present invention includes a pressure holding mechanism 1 and a lifting assembly 2. The pressure holding mechanism 1 includes at least two pressure plates 11, and a pressure holding gap 12 is formed between two adjacent pressure plates 11. The two pressure plates 11 achieve pressure holding or removal of the workpiece 20 by approaching or separating. In this embodiment, there are multiple pressure plates 11, which are arranged at equal intervals, so multiple workpieces 20 can be pressured at one time. The pressure holding gaps 12 correspond one-to-one with the lifting assemblies 2. Since the pressure plates 11 are arranged in an array, pressure holding gaps 12 are formed between the pressure plates 11. Each pressure holding gap 12 can accommodate one workpiece 20. Each workpiece 20 requires a set of lifting assemblies 2 for lifting. Therefore, the number of lifting assemblies 2 corresponds one-to-one with 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 carrier film 22, and a second lifting member 23. The first lifting member 21 is vertically and vertically disposed above one of the two pressure plates 11 and clamps one side of the carrier film 22. The second lifting member 23 is vertically and vertically disposed above the other of the two pressure plates 11 and clamps the other side of the carrier film 22. For example, there is a pressure-holding gap 12 between the two pressure plates 11. The pressure plate 11 on the left side of the pressure-holding gap 12 is provided with the first lifting member 21, and the pressure plate 11 on the right side of the pressure-holding gap 12 is provided with the second lifting member 23. The first lifting member 21 and the second lifting member 23 form a set. As the pressure plates 11 continue to stack, the pressure-holding gap 12 next to each other is also provided with a set of first lifting members 21 and second lifting members 23. The two adjacent sets of first lifting members 21 and second lifting members 23 are located on the same pressure plate 11. The carrier membrane 22 forms a carrier portion 221 in the pressure holding gap 12, which can carry the workpiece 20. By raising and lowering the first lifting member 21 and the second lifting member 23, the carrier membrane 22 carries the workpiece 20 up and down, allowing 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 carrier portion 221 of the carrier membrane 22 can form a wrapping and supporting function for the workpiece 20. When material needs to be fed, the lifting of the lifting assembly 2 can drive the carrier membrane 22 to rise and exit the pressure holding gap 12. Position 2 facilitates the placement of workpiece 20 by an external pickup device. When pressure holding is required, the descent of the lifting assembly 2 lowers the carrier membrane 22 into the pressure holding gap 12 and carries the workpiece 20 into the pressure holding gap 12, i.e., between the two pressure plates. The carrier membrane 22 is very thin and flexible. Utilizing this characteristic, the two pressure plates 11 act directly on the workpiece 20 and maintain pressure on it. In other words, the carrier membrane 22 replaces the traditional lifting component of the battery gas bag, and works in conjunction with the lifting assembly 2 to place and remove the battery into the processing station. More specifically, as follows:

[0032] Please see Figures 1 to 2The first lifting member 21 and the second lifting member 23 have the same specific structure. Each of the first lifting member 21 and the second lifting member 23 includes a lifting rod 211 and a winding assembly 212 for fixing the carrier film 22. The lower end of the lifting rod 211 is connected to the winding assembly 212. By lifting the lifting rod 211, the carrier film 22 on the winding assembly 212 is lifted up and down. The lifting-type pick-and-place mechanism 100 of the battery pressure holding device 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 second lifting member 23 are connected to the fixing member 24. The fixing member 24 enables the first lifting member 21 and the adjacent second lifting member 23 to be connected into a whole 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 lift up and down together.

[0033] Please see Figures 2 to 5 The winding assembly 212 includes an upper winding component 2121 and a lower winding component 2122. The lifting rod 211 is connected to the upper winding component 2121, and the lower winding component 2122 is installed on the pressure plate 11. The two free ends of the bearing membrane 22 are respectively fixed to the lower winding component 2122 of the first lifting component 21 and the lower winding component 2122 of the second lifting component 23 in the same group. The middle part of the bearing membrane 22 is wound between the upper winding component 2121 of the first lifting component 21 and the upper winding component of the second lifting component 23 in the same group, so that the two upper winding components 2121 and the two lower winding components 2122 together form a pulley block structure (see details). Figure 5 That is, the lower winding component 2122 acts as a fixed pulley, the upper winding component 2121 acts as a movable pulley, and the bearing membrane 22 acts as a rope. This structure can achieve the purpose of saving effort and reduce the damage of the bearing membrane 22.

[0034] Please see Figure 5 The upper winding component 2121 and the lower winding component 2122 are arranged opposite to each other, and a gap is formed between the upper winding component 2121 and the lower winding component 2122 to compress the bearing membrane 22. That is, when the upper winding component 2121 descends onto the lower winding component 2122, the upper winding component 2121 naturally presses against the lower winding component 2122 and compresses the bearing membrane 22, thereby achieving positioning.

[0035] Please see Figure 5 The lower winding part 2122 of the first lifting member 21 and the lower winding part 2122 of the adjacent second lifting member 23 are connected together to form an integral structure of the seat body. The bottom end surface of the seat body is a planar structure 2122a, so that the seat body can be installed on the top surface of the pressure plate 11.

[0036] Please see Figures 1 to 6The upper component 2121 extends outward to form a locking block 2121a. The pressure plate 11 has a corresponding locking groove 11a. The locking block 2121a is inserted into the locking groove 11a. Since there is a separation and engagement state between the upper component 2121 and the lower component 2122, the cooperation between the locking block 2121a and the locking groove 11a allows the locking block and the locking groove to engage when the upper component 2121 descends above the lower component 2122, or to disengage when the upper component 2121 is removed from the lower component 2122. Preferably, both the upper component 2121 and the lower component 2122 are rod structures with a circular cross-section.

[0037] In summary, please refer to Figures 1 to 6 The working process of the lifting-type pick-and-place mechanism 100 of the battery pressure holding device of the present invention will be described in detail below:

[0038] The first lifting member 21 and the second lifting member 23 are connected by lifting and lowering to have a discharge position where the bearing part 221 is in an upward state and a feed position where the bearing part 221 is in a downward state. When the bearing part 221 is not raised, the state is as follows: Figure 4 As shown, when the carrier portion 221 is in the discharge position, the external picking device picks up the workpiece 20 and places it into the carrier portion 221 of the carrier film 22 (the placement direction is as shown). Figure 4 (In the direction indicated by the middle arrow A), at this time, the workpiece 20 is supported on the support part 221 (as shown in the state). Figure 5 (As shown); through the descent of the first lifting member 21 and the second lifting member 23, the bearing part 221 descends from the discharge position to the infeed position and drives the workpiece 20 to descend to the pressure-holding gap 12 between the two pressure plates 11; the two pressure plates 11 maintain pressure on the workpiece 20 by pressing together (the pressure-holding direction is as shown). Figure 6 (In the direction indicated by the middle arrow B); the two pressure plates 11 separate, and the bearing part 221 rises from the feeding position to the discharging position, driving the workpiece 20 to rise and remove the pressure holding gap 12 (removal direction as shown in the image). Figure 6 (In the direction indicated by the middle arrow C), the picking device removes the pressurized workpiece 20 from the pressurization gap 12 by clamping it.

[0039] By combining the pressure holding mechanism 1 and the lifting assembly 2, the pressure holding mechanism 1 includes at least two pressure plates 11, and a pressure holding gap 12 is formed between two adjacent pressure plates 11. The two pressure plates 11 achieve pressure holding or removal of the workpiece 20 by approaching or separating. The pressure holding gap 12 corresponds one-to-one with the lifting assembly 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 one workpiece 20. Each workpiece 20 requires a set of lifting assemblies 2 to lift it. Therefore, the number of lifting assemblies 2 corresponds one-to-one with 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 carrier film 22, and a second lifting member 23. The first lifting member 21 is vertically and vertically positioned above one of the two pressure plates 11 and clamps one side of the carrier film 22. The second lifting member 23 is vertically and vertically positioned above the other of the two pressure plates 11 and clamps the other side of the carrier film 22. The carrier film 22 forms a carrier portion 221 in the pressure holding gap 12 that can carry the workpiece 20. By lifting and lowering the first lifting member 21 and the second lifting member 23, the carrier film 22 carries the workpiece 20 up and down, allowing the workpiece 20 to enter or exit the pressure holding gap 12. In other words, the lifting assembly 2 is capable of being lifted and lowered relative to the pressure plates 11. The support portion 221 of the 22 can wrap and support the workpiece 20. When feeding is required, the lifting assembly 2 can lift the support film to the position of exiting the pressure holding gap 12, so that the external picking device can put the workpiece 20 in. When pressure holding is required, the lowering of the lifting assembly 2 can lower the support film into the pressure holding gap 12 and bring the workpiece 20 into the pressure holding gap 12. The support film is very thin and flexible. Taking advantage of this characteristic, the two pressure plates 11 are equivalent to directly acting on the workpiece 20 and holding the workpiece 20 under pressure. That is, the support film 22 replaces the lifting part of the battery air bag and works with the lifting assembly 2 to put the battery into and take out the processing station.

[0040] Please see Figures 1 to 6 A method for picking up and placing batteries using a pull-up pick-up and place mechanism 100 based on a battery pressure holding device, comprising the following steps:

[0041] (S1) Establish the lifting and placing mechanism 100 of the battery pressure holding device described above;

[0042] (S2) The first lifting member 21 and the second lifting member 23 have a discharge position where the bearing part 221 is in a rising state and a feeding position where the bearing part 221 is in a falling state through lifting and lowering. When the bearing part 221 is in the discharge position, the workpiece 20 is placed into the bearing part 221.

[0043] (S3) The bearing part 221 descends from the discharge position to the infeed position and drives the workpiece 20 to descend to the pressure holding gap 12 between the two pressure plates 11;

[0044] (S4) The two pressure plates 11 maintain pressure on the workpiece 20 by pressing together;

[0045] (S5) The two pressure plates 11 separate, and the bearing part 221 rises from the feeding position to the discharging position and drives the workpiece 20 to rise to remove the pressure holding gap 12.

[0046] Specifically, the picking and placing method further includes the following steps: step (S2) further includes establishing a picking device, which picks up the workpiece 20 and places it into the bearing portion 221; step (S5) further includes the picking device removing the pressurized workpiece 20 from the pressurization gap 12 by clamping.

[0047] After sorting, we can obtain

[0048] A method for picking up and placing batteries using a pull-up pick-up and place mechanism 100 based on a battery pressure holding device includes the following steps:

[0049] (S1) Establish the lifting and placing mechanism 100 of the battery pressure holding device described above;

[0050] (S2) Establish a picking device, the picking device picks up the workpiece 20 and puts it into the carrying part 221. The first lifting member 21 and the second lifting member 23 have a material discharge position where the carrying part 221 is in a rising state and a material infeed position where the carrying part 221 is in a falling state through lifting and lowering. When the carrying part 221 is in the material discharge position, the workpiece 20 is put into the carrying part 221.

[0051] (S3) The bearing part 221 descends from the discharge position to the infeed position and drives the workpiece 20 to descend to the pressure holding gap 12 between the two pressure plates 11;

[0052] (S4) The two pressure plates 11 maintain pressure on the workpiece 20 by pressing together;

[0053] (S5) The two pressure plates 11 separate, the bearing part 221 rises from the feeding position to the discharging position and drives the workpiece 20 to rise to remove the pressure holding gap 12, and the picking device removes the pressure-held workpiece 20 by clamping it to remove the pressure holding gap 12.

[0054] The carrier portion 221 of the carrier membrane 22 can form a wrapping and supporting effect on the workpiece 20. The carrier membrane is very thin and flexible. Taking advantage of this characteristic, the two pressure plates 11 act directly on the workpiece 20 and maintain pressure on the workpiece 20. That is, the carrier membrane 22 replaces the lifting part of the battery air bag and works with the lifting assembly 2 to put the battery into and take out the processing station.

[0055] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention shall still fall within the scope of the present invention.

Claims

1. A lifting-type loading and unloading mechanism for a battery pressure-holding device, characterized in that, It includes a pressure-holding mechanism, a lifting assembly, and a fixing member for joint lifting. The pressure-holding mechanism includes at least two pressure plates, with a pressure-holding gap formed between adjacent pressure plates. The pressure-holding gap corresponds one-to-one with the lifting assembly. The lifting assembly includes a first lifting member, a carrying membrane, and a second lifting member. The first lifting member is vertically and vertically disposed above one of the two pressure plates and clamps one side of the carrying membrane. The second lifting member is vertically and vertically disposed above the other of the two pressure plates and clamps the other side of the carrying membrane. The carrying membrane forms a carrying portion in the pressure-holding gap that can carry the workpiece. By raising and lowering the first lifting member and the second lifting member, the carrying membrane carries the workpiece up and down, allowing 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 second lifting members are connected to the fixing member.

2. The lifting and placing mechanism of the battery pressure holding device as described in claim 1, characterized in that, The first lifting member and the second lifting member each include a lifting rod and a winding assembly for fixing the carrier film. The lower end of the lifting rod is connected to the winding assembly, and the carrier film on the winding assembly is raised and lowered by lifting the lifting rod.

3. The lifting-type pick-and-place mechanism of the battery pressure holding device as described in claim 2, characterized in that, The winding assembly includes an upper winding component and a lower winding component. The lifting rod is connected to the upper winding component, and the lower winding component is installed on the pressure plate. The two free ends of the bearing membrane are respectively fixed to the lower winding component of the first lifting component and the lower winding component of the second lifting component in the same group. The middle part of the bearing membrane is wound between the upper winding component of the first lifting component and the upper winding component of the second lifting component in the same group, so that the two upper winding components and the two lower winding components together form a pulley group structure.

4. The lifting and placing mechanism of the battery pressure holding device as described in claim 3, characterized in that, The upper winding component and the lower winding component are arranged opposite to each other, and a gap is formed between the upper winding component and the lower winding component to compress the bearing membrane.

5. The lifting and placing mechanism of the battery pressure holding device as described in claim 3, characterized in that, The lower winding component of the first lifting member and the lower winding component of the adjacent second lifting member are connected together to form an integral seat. The bottom surface of the seat is a planar structure so that the seat can be installed on the top surface of the pressure plate.

6. The lifting-type pick-and-place mechanism of the battery pressure holding device as described in claim 3, characterized in that, The upper part extends outward to form a locking block, and the pressure plate has a locking groove corresponding to the locking block. The locking block is inserted into the locking groove.

7. The lifting-type pick-and-place mechanism of the battery pressure holding device as described in claim 3, characterized in that, Both the upper and lower ramp components are rod structures with a circular cross-section.

8. A method for picking up and placing batteries using a lifting mechanism based on a battery pressure-holding device, characterized in that, Includes the following steps: (S1) Establish a lifting-type pick-and-place mechanism for the battery pressure-holding device according to any one of claims 1 to 7; (S2) The first lifting member and the second lifting member have a discharge position where the bearing part is in a raised state and a feeding position where the bearing part is in a lowered state through lifting and lowering. When the bearing part is in the discharge position, the workpiece is placed into the bearing part. (S3) The bearing part descends from the discharge position to the infeed position and drives the workpiece to descend to the pressure-holding gap between the two pressure plates; (S4) The two pressure plates maintain pressure on the workpiece by pressing them together; (S5) The two pressure plates separate, and the bearing part rises from the feeding position to the discharging position and drives the workpiece to rise to remove the pressure holding gap.

9. The method for picking up and placing items as described in claim 8, characterized in that, It also includes the following steps: Step (S2) further includes establishing a picking device, which picks up the workpiece and places it into the bearing portion; step (S5) further includes the picking device removing the pressurized workpiece from the pressurization gap by clamping.

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