Battery shaper and control method of battery shaper

Abstract

The present application relates to the field of battery production equipment, and particularly provides a battery shaping machine and a control method of the battery shaping machine, aiming at solving the problem of complex structure of the current battery shaping machine. To this end, the battery shaping machine comprises a first rotating body and a second rotating body, the first rotating body comprises a battery placing part, the second rotating body comprises a pressing part, the pressing part is arranged at the periphery of the battery placing part and can leave a space with the battery placing part, and the rotation points of the first rotating body and the second rotating body are arranged non-concentrically, so that the space can gradually decrease in the process of synchronous rotation of the first rotating body and the second rotating body, and then the pressing part can apply pressure to the battery placed on the battery placing part.

Description

Technical Field

[0001] This invention relates to the field of battery production equipment, specifically providing a battery shaping machine and a control method for the battery shaping machine. Background Technology

[0002] As people's requirements for the energy density and mass margin of lithium-ion batteries continue to increase, and higher requirements are placed on the shape of rigid prismatic batteries before they are encased, lithium-ion battery shaping machines have appeared on the market.

[0003] However, in the current market, the mechanisms for shaping lithium-ion batteries typically only have a pressing mechanism. For example, patent CN204857880U discloses a battery shaping machine, which specifically discloses that the shaping machine includes a frame 1, a base plate 11 fixed to the top of the frame 1, an openable and closable shaping chamber fixed to the top of the base plate 11, a platform 2 set in the shaping chamber, several insulating plates 21 laid on top of the platform 2 for placing batteries, a shaping plate 3 set above the platform 2 for pressing and shaping the batteries, a shaping drive mechanism for driving the shaping plate 3 to move up and down, and a heating box 4 for heating the insulating plates 21. In use, the batteries are placed one by one on the insulating plates 21, then stacked on the platform 2, and slowly moved into the shaping chamber. The shaping drive mechanism drives the shaping plate 3 to move downwards, pressing and shaping the batteries on the platform 2. After shaping, the shaping drive mechanism moves upwards, stops pressing, removes the platform 2, and collects the shaped batteries. However, such equipment usually occupies a large space, has a complex structure, and is expensive to manufacture.

[0004] Accordingly, there is a need in the field for a new battery shaping machine to address the problem of the complex structure of current battery shaping machines. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the current battery forming machine has a relatively complex structure.

[0006] In a first aspect, the present invention provides a battery shaping machine, characterized in that the battery shaping machine comprises: a first rotating body, the first rotating body including a battery placement part; and a second rotating body, the second rotating body including a pressing part, the pressing part being disposed around the battery placement part and having a gap between it and the battery placement part, wherein the rotation points of the first rotating body and the second rotating body are not concentrically arranged, so that the gap can gradually decrease during the synchronous rotation of the first rotating body and the second rotating body, thereby enabling the pressing part to apply pressure to the battery placed on the battery placement part.

[0007] In the preferred embodiment of the battery shaping machine described above, the battery shaping machine further includes a pressing cover and a lifting device. The pressing cover is vertically and vertically disposed at the battery placement part via the lifting device, and can be located inside the pressing part.

[0008] In the preferred embodiment of the above-mentioned battery shaping machine, the first rotating body has a polygonal cross-section, the rotation point of the first rotating body is located at the center of the inscribed circle of the polygon, the outer walls corresponding to each side of the polygon form a plurality of battery placement parts, each battery placement part is provided with the extrusion cover and the lifting device; the number of extrusion parts is plurality of, each extrusion part can correspond one-to-one with each battery placement part, and there is a space for battery picking and placing between adjacent extrusion parts.

[0009] In the preferred embodiment of the above-mentioned battery shaping machine, the cross-section of each of the extrusion parts is composed of multiple arc portions of the same circle; each extrusion cover includes an arc surface and an extrusion plane, each arc surface can contact the inner wall of the corresponding extrusion part, and each extrusion plane can press the battery on the corresponding battery placement part.

[0010] In the preferred embodiment of the battery shaping machine described above, after installation, the rotation point of the second rotating body is located above the rotation point of the first rotating body; the battery shaping machine further includes a locking device, which is configured to lock the position of the compression cover relative to the battery placement part when the spacing is at its minimum.

[0011] In the preferred embodiment of the above-mentioned battery shaping machine, the lifting device includes a lifting column and a driving component. The lifting column is disposed on the side of the extrusion cover near the battery placement part and is connected to the driving component. The battery placement part is provided with a hole. Under the action of the driving component, the lifting column can be lifted and lowered in the hole. The locking device is a snap-fit ​​structure. When the distance is minimal, the lifting column and the hole are snapped together by the snap-fit ​​structure.

[0012] In the preferred embodiment of the above-mentioned battery shaping machine, the battery placement part is provided with a first heating device; and / or the extrusion plane is provided with a second heating device.

[0013] In another aspect, the present invention also provides a control method for a battery shaping machine, characterized in that the battery shaping machine includes: a first rotating body, the first rotating body including a battery placement part; a second rotating body, the second rotating body including a pressing part, the pressing part being disposed around the battery placement part and having a gap between it and the battery placement part, the rotation points of the first rotating body and the second rotating body being non-concentric, so that the gap can gradually decrease during the synchronous rotation of the first rotating body and the second rotating body, thereby enabling the pressing part to apply pressure to the battery placed on the battery placement part; the control method includes: after the battery is placed between the battery placement part and the pressing part, controlling the first rotating body and the second rotating body to rotate synchronously.

[0014] In a preferred embodiment of the control method for the battery shaping machine described above, the battery shaping machine further includes a pressing cover and a lifting device. The pressing cover is vertically and flexibly positioned at the battery placement section via the lifting device and can be located inside the pressing section. Before the step of "controlling the first rotating body and the second rotating body to rotate synchronously after the battery is placed between the battery placement section and the pressing section", the control method further includes: when the battery placement section and the pressing section are at a preset work position, controlling the pressing section to maintain its current position, controlling the battery placement section to rotate to a preset loading / unloading work position outside the pressing section; controlling the lifting device to rise to a first preset position that allows the battery to be removed; after the battery is placed in the battery placement section, controlling the lifting device to descend to a second preset position that allows the pressing cover to enter the inside of the pressing section; controlling the battery placement section to rotate back to the preset work position so that the battery can be placed between the battery placement section and the pressing section.

[0015] In the preferred embodiment of the control method for the battery shaping machine described above, the step of "controlling the first rotating body and the second rotating body to rotate synchronously" further includes: controlling the first rotating body and the second rotating body to rotate synchronously for a full revolution, so that the battery placement part and the extrusion part can rotate back to the preset work position.

[0016] Those skilled in the art will understand that the battery shaping machine of the present invention includes a first rotating body and a second rotating body. The first rotating body includes a battery placement part, and the second rotating body includes a pressing part. The pressing part is located on the periphery of the battery placement part and is able to leave a gap between it and the battery placement part. The rotation points of the first rotating body and the second rotating body are not concentrically arranged so that the gap can gradually decrease during the synchronous rotation of the first rotating body and the second rotating body, thereby enabling the pressing part to apply pressure to the battery placed on the battery placement part.

[0017] When the battery is placed on the battery placement section and positioned between the battery placement section and the pressing section, the first and second rotating bodies are controlled to rotate synchronously. Since the rotation points of the first and second rotating bodies are not concentric, the distance between the pressing section and the battery placement section gradually decreases during their synchronous rotation. This allows the pressing section to apply pressure to the battery on the placement section, thus completing the shaping process. This configuration results in a simpler structure for the battery shaping machine, a smaller footprint, and lower manufacturing costs. Attached Figure Description

[0018] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of the battery shaping machine of the present invention;

[0020] Figure 2 This is a step diagram of a possible implementation of the control method for the battery shaping machine of the present invention.

[0021] List of reference numerals in the attached diagram:

[0022] 1-First rotating body; 11-Battery placement part; 2-Second rotating body; 21-Extrusion part; 22-Battery loading and unloading space; 3-Extrusion cover; 31-Arc surface; 32-Extrusion plane; 4-Lifting column; 5-Battery. Detailed Implementation

[0023] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0024] It should be noted that in the description of this invention, terms such as "above" indicating direction or positional relationship are based on the direction or positional relationship shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention. Furthermore, in the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] like Figure 1 As shown, to address the issue of the complex structure of current battery shaping machines, this invention proposes a novel battery shaping machine. This machine includes a first rotating body 1 and a second rotating body 2. The first rotating body 1 includes a battery placement section 11, and the second rotating body 2 includes a pressing section 21. The pressing section 21 is located on the periphery of the battery placement section 11 and is spaced apart from it. The rotation points of the first rotating body 1 and the second rotating body 2 are not concentrically arranged, so that the distance between them gradually decreases during synchronous rotation, allowing the pressing section 21 to apply pressure to the battery placed on the battery placement section 11. It is understood that "the pressing section 21 is located on the periphery of the battery placement section 11" means that when the pressing section 21 is positioned relative to the battery placement section 11, it is located on the periphery of the battery placement section 11. Furthermore, this battery shaping machine is preferably used for shaping prismatic batteries, such as prismatic lithium batteries. Of course, it can also be used for shaping other types of batteries, such as blade batteries. More specifically, the battery described in this invention refers to the battery cell before it is packaged.

[0027] The methods for driving the first rotating body 1 to rotate include various approaches, such as directly driving the first rotating body 1 to rotate via a motor, in which case the output shaft of the motor is the rotation point of the first rotating body 1; or driving the first rotating body 1 to rotate via a combination of a motor and a transmission mechanism such as a reducer, in which case the output shaft of the transmission mechanism is the rotation point of the first rotating body 1. Of course, any method that can drive the first rotating body 1 of this invention to rotate does not deviate from the principle of this invention and is within the protection scope of this invention. Furthermore, the methods for fixing the driving device such as the motor include various approaches, such as fixing it to a base or the ground via a mounting bracket. In addition, the methods for driving the second rotating body 2 to rotate and the methods for fixing the driving device are the same as or similar to those described above, and will not be repeated here. It is also understood that the first rotating body 1 and the second rotating body 2 are driven separately, that is, they can be driven by different driving devices.

[0028] When the battery is placed on the battery placement section 11 and positioned between the battery placement section 11 and the pressing section 21, the first rotating body 1 and the second rotating body 2 are controlled to rotate synchronously. Since the rotation points of the first rotating body 1 and the second rotating body 2 are not concentric, the distance between the pressing section 21 and the battery placement section 11 can gradually decrease during the synchronous rotation of the first rotating body 1 and the second rotating body 2. This allows the pressing section 21 to apply pressure to the battery on the battery placement section 11, thereby completing the shaping process. The rotation speeds of the first rotating body 1 and the second rotating body 2 can be adjusted to achieve the required shaping time.

[0029] The above configuration makes the battery shaping machine simple in structure, occupies less space, and has a lower manufacturing cost.

[0030] As one possible implementation, the battery shaping machine also includes a compression cap 3 and a lifting device. The compression cap 3 is vertically and vertically disposed at the battery placement section 11 via the lifting device and can be located inside the compression section 21.

[0031] Since the compression cap 3 is vertically and vertically mounted on the battery placement section 11 via a lifting device, when the battery placement section 11 rotates out from the inside of the compression section 21, the compression cap 3 can be raised by controlling the lifting device to move away from the battery placement section 11. The lifting device can be stopped when it reaches a first preset position that allows the battery to be removed and placed. At this time, the shaped battery can be removed and the unshaped battery can be placed on the battery placement section 11. After the battery is placed, the lifting device is lowered to a second preset position that allows the compression cap 3 to enter the inside of the compression section 21. Preferably, the second preset position allows the compression cap 3 to press the battery tightly, thereby preventing the battery from shifting.

[0032] As one possible implementation, the first rotating body 1 has a polygonal cross-section, and the rotation point of the first rotating body 1 is located at the center of the inscribed circle of the polygon. The outer walls corresponding to each side of the polygon form multiple battery placement parts 11. Each battery placement part 11 is provided with a squeezing cover 3 and a lifting device. There are multiple squeezing parts 21, and each squeezing part 21 can correspond one-to-one with each battery placement part 11. A battery placement space 22 is left between adjacent squeezing parts 21.

[0033] More specifically, the first rotating body 1 can be a flat plate-like structure. A connecting hole can be provided at its rotation point for connection to the output shaft of the drive device that drives the first rotating body 1 to rotate, or its rotation point can be directly connected to the output shaft in a fixed manner. Of course, the shape of the first rotating body 1 is not limited to the above embodiments. For example, the first rotating body 1 may include a polygonal body, with a fixing plate at each edge of the polygonal body. The fixing plate is perpendicular to the front of the polygonal body, and each fixing plate is the battery placement part 11. Alternatively, the first rotating body 1 may be a hollow polygonal body, with its inner side connected to the same rotation point by multiple support rods. Simple substitutions of these configurations are all within the scope of protection of this invention. The connection method at the rotation point in the latter two embodiments is similar to the connection method described in the first embodiment and will not be repeated. This invention does not limit the specific number of sides of the polygon; the number of sides can be designed according to actual applications. For example, the first rotating body 1 can be an octagonal rotating body or a hexagonal rotating body, etc.

[0034] Since the cross-section of the first rotating body 1 is polygonal, the outer wall corresponding to the side of each polygon can be used as the battery placement part 11. There are multiple extrusion parts 21, and each extrusion part 21 can correspond one-to-one with each battery placement part 11, so that the number of batteries that can be carried at the same time is equal to the number of sides of the polygon. That is, as the distance between the extrusion part 21 and the battery placement part 11 decreases, each extrusion part 21 can extrude the battery on the corresponding battery placement part 11 through the corresponding extrusion cover 3. When the first rotating body 1 and the second rotating body 2 rotate one revolution in the first rotation direction, multiple batteries can be shaped. Its operating cycle is fast, which can improve the shaping efficiency of the batteries and also improve the space utilization rate inside the second rotating body 2. In addition, since there is a battery placement space 22 between adjacent extrusion sections 21, when the battery placement section 11 and the extrusion section 21 rotate to the preset work position, such as when they rotate to the top position after the shaping machine is installed, the second rotating body 2 can be kept stationary, and the first rotating body 1 can be rotated to a position that allows the battery placement section 11 to be located in the battery placement space 22, thereby providing convenience for battery placement and removal through the lifting of the lifting device.

[0035] Since each battery placement section 11 is equipped with a squeeze cap 3 and a lifting device, each squeeze cap 3 can be lifted and lowered on the corresponding battery placement section 11 through the corresponding lifting device, which facilitates the placement and removal of batteries on each battery placement section 11 and prevents each battery from shifting.

[0036] Furthermore, the cross-section of each extrusion part 21 is configured as multiple arc segments of the same circle; each extrusion cover 3 includes an arc surface 31 and an extrusion plane 32, each arc surface 31 can contact the inner wall of the corresponding extrusion part 21, and each extrusion plane 32 can press the battery on the corresponding battery placement part 11.

[0037] Specifically, the second rotating body 2 can be configured in various ways. For example, the second rotating body 2 may include multiple connecting plates, each extrusion part 21 may be an arc-shaped plate structure, each extrusion part 21 may correspond one-to-one with each connecting plate, and each extrusion part 21 may be connected to one end of the corresponding connecting plate and perpendicular to the front of the connecting plate. The other end of each connecting plate may be integrally formed and connected to form the part corresponding to the rotation point of the second rotating body 2. This configuration makes it easier to adjust the rotation speed of the second rotating body 2 to match the corresponding battery placement part 11 and achieve a tight fit. Alternatively, the second rotating body 2 may include a circular plate, the edge of which may be provided with multiple arc-shaped plates, and the multiple arc-shaped plates may form multiple extrusion parts 21. Simple substitutions of these configurations are all within the protection scope of this invention.

[0038] With the first rotating body 1 having a polygonal cross-section and its rotation point located at the center of the polygon's inscribed circle, the cross-sections of each extrusion part 21 are composed of multiple arc segments of the same circle. This ensures that the distance between the corresponding extrusion part 21 and the battery placement part 11 at any given location is the same, thereby guaranteeing the consistency of the battery's thickness after shaping. Furthermore, it is understood that in this case, adjacent arcs form a battery placement / removal space 22. Additionally, since each arc surface 31 can contact the inner wall of the corresponding arc-shaped extrusion part 21, the extrusion cover 3 can fit snugly against the extrusion part 21, and the extrusion plane 32 can shape and extrude the square motor, ensuring consistent thickness.

[0039] In one possible implementation, after installation, the rotation point of the second rotating body 2 is located above the rotation point of the first rotating body 1; the battery shaping machine also includes a locking device, which is configured to lock the position of the compression cover 3 relative to the battery placement part 11 when the gap is minimal.

[0040] Since the rotation point of the second rotating body 2 is located above the rotation point of the first rotating body 1 after installation, the distance between the extrusion part 21 and the battery placement part 11 gradually decreases as they rotate from the top to the bottom after installation on the battery shaping machine. At the bottom, the battery between the extrusion cover 3 and the battery placement part 11 is compressed to the final forming thickness. Furthermore, as the extrusion part 21 and the battery placement part 11 rotate from the bottom to the top, the distance between them gradually increases. Therefore, it can be seen that the extrusion part 21 at the bottom... The gap between the extrusion cover 3 and the battery placement part 11 is minimized. Since the locking device is configured to lock the position of the extrusion cover 3 relative to the battery placement part 11 when the gap is minimized, the locking device locks the extrusion cover 3 when the extrusion part 21 and the battery placement part 11 rotate to the bottom. This prevents the battery from becoming fluffy and misaligned as the gap gradually increases during the process of the extrusion part 21 and the battery placement part 11 rotating from the bottom to the top. In other words, the above configuration can keep the battery at this thickness for a certain period of time after it is finally formed, maintain the thickness of the battery, prevent the battery from becoming fluffy, and prevent the battery from misaligning.

[0041] In one possible implementation, the lifting device includes a lifting column 4 and a driving component. The lifting column 4 is disposed on the side of the extrusion cover 3 near the battery placement part 11 and is connected to the driving component. The battery placement part 11 has a hole, and the lifting column 4 is movably positioned in the hole under the action of the driving component. The locking device is a snap-fit ​​structure, in which the lifting column 4 and the hole are snapped together when the gap is minimal. The connection between the lifting column 4 and the extrusion cover 3 can be varied, such as the extrusion cover 3 having a mounting hole, the lifting column 4 being interference-fitted into the hole, or the lifting column 4 being screwed or welded to the extrusion cover 3. The specific structural form of the driving component can be varied, such as the lifting column 4 being a worm gear, the driving component being a motor and a worm wheel, with the motor connected to the worm gear via the worm wheel; or the lifting column 4 being a rack and pinion, the driving component being a motor and a gear, with the motor connected to the rack via the gear. These simple structural variations do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0042] The locking device is a snap-fit ​​structure. When the distance between the lifting column 4 and the hole is at its minimum, the lifting column 4 is snapped into place by the snap-fit ​​structure. For example, a slot can be provided in the hole, and a buckle can be provided on the lifting column 4. When the distance between the pressing part 21 and the battery placement part 11 is at its minimum, that is, when the pressing part 21 and the battery placement part 11 are at the bottom position of the installed battery shaping machine, the buckle engages with the slot. When the pressing part 21 and the battery placement part 11 are at the top position, and the lifting column 4 rises, the buckle disengages from the slot. Of course, the above-mentioned snap-fit ​​structure can be any snap-fit ​​structure in the prior art, as long as it can achieve the snap-fit ​​function. It can be understood that when the pressing part 21 and the battery placement part 11 are located at the bottom, the position of the lifting column 4 in the hole is fixed. Therefore, the position of the snap-fit ​​structure can be designed based on this position.

[0043] In one possible implementation, a first heating device is provided on the battery placement part 11, and a second heating device is provided on the extrusion plane 32. The present invention does not limit the specific structure of the first and second heating devices; for example, the first and second heating devices can be PTC heating elements or heating wires, etc. This arrangement allows for heating of both large surfaces of the battery, thereby achieving the purpose of high-temperature shaping.

[0044] Furthermore, the battery shaping machine of the present invention may also include a controller, which is connected to the aforementioned lifting device, first heating device, second heating device, driving device for driving the first rotating body 1 to rotate, and driving device for driving the second rotating body 2 to rotate, etc., for controlling these devices. The controller may be set on the first rotating body 1 or the second rotating body 2, etc., and those skilled in the art can flexibly adjust it.

[0045] In addition, the present invention also provides a control method for a battery shaping machine, the control method comprising the following steps.

[0046] Step S101: When the battery placement part and the extrusion part are in the preset station, control the extrusion part to maintain the current position, and control the battery placement part to rotate to the preset loading and unloading station outside the extrusion part.

[0047] Preferably, the preset station and the loading / unloading station are located on top of the battery shaping machine after it is installed, which can prevent slippage due to gravity and facilitate loading / unloading. The battery placement section and the extrusion section being located at the preset station can take several forms: for example, when no batteries are placed on the battery placement section, the initial positions of the battery placement section and the extrusion section are located at the preset station; or, the battery placement section and the extrusion section rotate one full turn from the preset station and then synchronously return to the preset station, etc.

[0048] For ease of explanation, the direction of rotation in which the battery placement section rotates to the preset loading / unloading station outside the extrusion section is referred to as the first rotation direction. The first rotation direction can be either counter-clockwise or clockwise. The preset loading / unloading station corresponds to the battery pick-and-place space described above; that is, the battery placement section rotating to the preset loading / unloading station outside the extrusion section means it rotates to the battery pick-and-place space. This battery pick-and-place space is preferably an adjacent battery pick-and-place space to the preset station, such as a battery pick-and-place space adjacent to it in a counter-clockwise direction. It is understood that controlling the rotation or stopping of the battery placement section is achieved by controlling the drive device used to drive the first rotating body, and controlling the rotation or stopping of the extrusion section is achieved by controlling the drive device used to drive the second rotating body.

[0049] Step S102: Control the lifting device to rise to the first preset position where the battery can be removed.

[0050] After the battery placement section rotates to the preset loading / unloading station outside the extrusion section, the lifting device is controlled to rise to a first preset position that allows the battery to be removed. Specifically, by controlling the lifting device to rise, the extrusion cover is raised, facilitating the placement of wound or stacked batteries onto the battery placement section; or, facilitating the removal of shaped batteries from the battery placement section, followed by the placement of unwound or unstacked batteries onto the battery placement section. The first preset position can be designed according to the actual application.

[0051] Step S103: After the battery is placed in the battery placement section, control the lifting device to descend to a second preset position that allows the squeeze cap to enter the inside of the squeeze section.

[0052] Preferably, the second preset position can press the battery firmly. The second preset position can be designed according to the actual application.

[0053] Step S104: Control the battery placement section to rotate back to the preset position so that the battery can be placed between the battery placement section and the extrusion section.

[0054] That is, after the lifting device descends to the second preset position, the battery placement part is controlled to rotate back to the preset position in the second rotation direction so that the extrusion cover can enter the inside of the extrusion part, that is, the battery is placed between the battery placement part and the extrusion part, so that the extrusion part can apply pressure to the battery through the extrusion cover.

[0055] Step S200: After the battery is placed between the battery placement part and the compression part, the first rotating body and the second rotating body are controlled to rotate synchronously.

[0056] After the battery is placed between the battery placement section and the extrusion section, the first and second rotating bodies can be controlled to rotate synchronously in a first rotation direction, or they can be controlled to rotate synchronously in a second rotation direction. Preferably, the first and second rotating bodies can be controlled to rotate a full revolution synchronously, so that the battery placement section and the extrusion section can return to the preset working position, thereby continuing to execute the above step S101, and so on in a cycle. Thus, after the battery placement section and the extrusion section have rotated a full revolution, the shaping of the battery on each battery placement section can be completed. It has a fast operating cycle, high shaping efficiency, and good continuous operation performance.

[0057] Several methods exist for controlling the synchronous rotation of the first and second rotating bodies. One possible implementation involves controlling the first rotating body to rotate actively and stopping the drive device that drives the second rotating body when the pressure on the squeeze cap exceeds a preset value, or when the distance between the squeeze section and the battery placement section is less than a preset distance. In other words, the first rotating body drives the second rotating body to rotate. When the pressure on the squeeze cap is less than or equal to a preset value, or when the distance between the squeeze section and the battery placement section is greater than or equal to a preset distance, the second rotating body is controlled to rotate actively in the same direction and at the same speed as the first rotating body. In other words, when there is pressure between the squeeze section and the squeeze cap, the first rotating body rotates actively and the second rotating body follows; when there is no pressure, both the first and second rotating bodies rotate actively in the same direction and at the same speed, thus avoiding inconsistencies in operation due to different angular velocities and ensuring close cooperation between the battery placement section and the squeeze section. A pressure sensor can be installed on the squeeze cap to detect pressure. A distance sensor can be installed on the battery placement section to detect the distance. Since there is a corresponding relationship between each station and the spacing during the rotation process, such as the spacing gradually increasing after rotating to the set station, the first and second rotating bodies can also be synchronously controlled by judging whether the set station has been reached.

[0058] As one possible working process, after the battery is placed between the battery placement part and the extrusion part, there is a gap between the extrusion cover and the extrusion part. At this time, the first rotating body and the second rotating body are controlled to actively rotate in the first direction at the same speed. During the rotation, the distance between the extrusion part and the battery placement part can gradually decrease. This distance allows the extrusion part to apply pressure to the extrusion cover. The first rotating body is controlled to continue to rotate actively, and the drive device that drives the second rotating body to rotate stops driving, so that the second rotating body is driven. When it rotates to the bottom position, the distance between the extrusion part and the battery placement part is the smallest, and then it will gradually increase. That is, when it rotates to the bottom, the second rotating body is controlled to actively rotate in the same direction and speed as the first rotating body until it rotates back to the preset position.

[0059] Of course, the above-described method for controlling the synchronous rotation of the first and second rotating bodies can also simply be used to control the first and second rotating bodies to rotate actively in the same direction and at the same speed. As long as the first and second rotating bodies can rotate synchronously, they are within the protection scope of this invention.

[0060] It is understood that the control method described above in this invention can be used to control each battery placement section, the corresponding lifting device, and the extrusion section. The battery shaping machine and its control method of this invention enable each battery placement section and corresponding extrusion section of the polygonal first rotating body to perform battery loading and unloading operations according to the above control method each time they reach a preset workstation. It has a fast operating cycle, can achieve continuous shaping, has high shaping efficiency, and its overall structure is relatively simple, with low manufacturing costs and a small footprint, resulting in high space utilization of the battery shaping machine.

[0061] It should be noted that the above embodiments are merely used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0062] For example, as an alternative implementation, the specific arrangement of the lifting device of the present invention is not fixed. As long as the pressing cover 3 can be raised and lowered relative to the battery placement part 11, its arrangement can be adjusted. For example, the lifting device includes a cylinder, the cylinder body is fixed on the battery placement part 11, and the piston rod of the cylinder is connected to the pressing cover 3. These do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0063] For example, as an alternative implementation, although the present invention is described with the cross-section of the first rotating body 1 being a polygon, this is not intended to limit the scope of protection of the present invention. For example, it may include a connecting rod and a placement plate, with the end of the connecting rod connected to the placement plate, and the rotation point corresponding to the other end of the connecting rod, that is, the rotation of the connecting rod drives the placement plate to rotate, etc., wherein the placement plate is the battery placement part 11, and in this case, its cross-section is T-shaped. These are all within the scope of protection of the present invention and do not deviate from the principle of the present invention.

[0064] For example, as an alternative implementation, the locking device of the present invention is not fixed. As long as the position of the compression cover 3 relative to the battery placement part 11 is locked when the distance between the compression part 21 and the battery placement part 11 is minimized, the setting can be adjusted. For example, the locking device is an electric lock, with the locking tongue part of the electric lock located on the compression cover 3 and the locking groove part located on the battery placement part 11. These do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0065] For example, the first heating device or the second heating device can be omitted.

[0066] For example, the squeeze cap 3 and the lifting device can be omitted. In this case, the inner wall of the squeeze section 21 can be made into a flat shape, and when placing the battery, the battery can be placed directly between the battery placement section 11 and the squeeze section 21.

[0067] Those skilled in the art will understand that the above-described rectifier may also include other well-known structures, such as processors and memories. The memories include, but are not limited to, random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory, or registers. The processors include, but are not limited to, CPLD / FPGA, DSP, ARM processors, and MIPS processors. To avoid unnecessarily obscuring the embodiments of this disclosure, these well-known structures are not shown in the accompanying drawings.

[0068] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A battery shaping machine, characterized in that, The battery shaping machine includes: A first rotating body, the first rotating body including a battery placement part; The second rotating body includes a squeezing part, which is located on the periphery of the battery placement part and is able to leave a gap between it and the battery placement part. The rotation points of the first rotating body and the second rotating body are not concentric, so that the gap can gradually decrease during the synchronous rotation of the first rotating body and the second rotating body, thereby enabling the squeezing part to apply pressure to the battery placed on the battery placement part.

2. The battery shaping machine according to claim 1, characterized in that, The battery shaping machine also includes a compression cap and a lifting device. The compression cap is vertically and vertically positioned at the battery placement section via the lifting device and can be located inside the compression section.

3. The battery shaping machine according to claim 2, characterized in that, The first rotating body has a polygonal cross-section, and the rotation point of the first rotating body is located at the center of the inscribed circle of the polygon. The outer walls corresponding to each side of the polygon form a plurality of battery placement parts, and each battery placement part is provided with the squeeze cover and the lifting device. There are multiple compression sections, each of which corresponds to a battery placement section, and there is space between adjacent compression sections for battery placement and removal.

4. The battery shaping machine according to claim 3, characterized in that, The cross-section of each of the extrusion sections is composed of multiple arc segments of the same circle; Each of the compression caps includes an arc surface and a compression plane. Each arc surface can contact the inner wall of the corresponding compression part, and each compression plane can press the battery on the corresponding battery placement part.

5. The battery shaping machine according to claim 2, characterized in that, After installation, the rotation point of the second rotating body is located above the rotation point of the first rotating body; The battery shaping machine also includes a locking device configured to lock the position of the compression cap relative to the battery placement portion when the spacing is at its minimum.

6. The battery shaping machine according to claim 5, characterized in that, The lifting device includes a lifting column and a driving component. The lifting column is disposed on the side of the extrusion cover near the battery placement part and is connected to the driving component. The battery placement part is provided with a hole. Under the action of the driving component, the lifting column is movably disposed in the hole. The locking device is a snap-fit ​​structure. When the spacing is at its minimum, the lifting column and the hole are snapped together by the snap-fit ​​structure.

7. The battery shaping machine according to claim 4, characterized in that, The battery placement section is provided with a first heating device; and / or A second heating device is provided on the extrusion plane.

8. A control method for a battery shaping machine, characterized in that, The battery shaping machine includes: A first rotating body, the first rotating body including a battery placement part; The second rotating body includes a squeezing part, which is located on the periphery of the battery placement part and is able to leave a gap with the battery placement part. The rotation points of the first rotating body and the second rotating body are not concentric, so that the gap can gradually decrease during the synchronous rotation of the first rotating body and the second rotating body, thereby enabling the squeezing part to apply pressure to the battery placed on the battery placement part. The control method includes: After the battery is placed between the battery placement part and the compression part, the first rotating body and the second rotating body are controlled to rotate synchronously.

9. The control method for the battery shaping machine according to claim 8, characterized in that, The battery shaping machine also includes a compression cap and a lifting device. The compression cap is movably mounted at the battery placement section via the lifting device and can be located inside the compression section. Before the step of "controlling the first rotating body and the second rotating body to rotate synchronously after the battery is placed between the battery placement part and the compression part", the control method further includes: When the battery placement part and the extrusion part are located at a preset station, the extrusion part is controlled to maintain its current position, and the battery placement part is controlled to rotate to a preset loading and unloading station outside the extrusion part; Control the lifting device to rise to a first preset position where the battery can be removed; After the battery is placed in the battery placement section, the lifting device is controlled to descend to a second preset position that allows the squeeze cap to enter the inside of the squeeze section; Control the battery placement section to rotate back to the preset work position so that the battery can be placed between the battery placement section and the compression section.

10. The control method for the battery shaping machine according to claim 9, characterized in that, The step of "controlling the first rotating body and the second rotating body to rotate synchronously" further includes: The first rotating body and the second rotating body are controlled to rotate synchronously for a full revolution so that the battery placement part and the extrusion part can rotate back to the preset work position.

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