Battery cell lamination platform

Abstract

The utility model discloses a battery cell lamination platform, and belongs to the technical field of battery manufacturing. The battery core lamination platform comprises a stacking table and two pairs of pressing knife mechanisms, the stacking table is used for bearing battery pole pieces and diaphragms, and the battery pole pieces and the laid diaphragms are stacked on the stacking table; the two pairs of knife pressing mechanisms are respectively arranged at the two ends of the stacking table along the diaphragm laying direction and are used for pressing the laid battery pole pieces in turn. Each pressing knife mechanism comprises a base, a longitudinal sliding mechanism, a transverse sliding mechanism and a pressing knife, wherein the longitudinal sliding mechanism, the transverse sliding mechanism and the pressing knife are installed on the base. The transverse sliding mechanism can be driven by the longitudinal sliding mechanism to change the longitudinal distance of the transverse sliding mechanism relative to the base, the pressing cutter is installed on the transverse sliding mechanism and provided with a pressure applying part extending towards the stacking table, and the pressing cutter can be driven by the transverse sliding mechanism to adjust the distance from the pressure applying part to the side edge of the battery pole piece. The modular module has the advantages that the modular structure is adopted, the independence among the modules is relatively high, and the maintenance is convenient.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of battery manufacturing, in particular, to the technical field of lithium-ion battery cell manufacturing. Specifically, the application relates to a cell stacking platform. Background Art

[0002] The battery cell of a lithium battery is formed by stacking multiple layers of battery electrodes and separators between adjacent electrodes. The conventional battery cell forming process is to alternately stack positive electrodes, separators, negative electrodes, separators, positive electrodes... on a stacking platform to form a battery cell.

[0003] In order to ensure that the stacked battery cell structure is tight, each time a layer of diaphragm and battery electrode is laid from left to right, the stacking platform will use a pair of pressing knives to press the laid diaphragm and battery electrode, and then the diaphragm is laid from right to left again. After another battery electrode is placed, another pair of pressing knives will also press the newly laid diaphragm and battery electrode, and then the previous pair of pressing knives will detach from the battery cell to prepare to press the next group of diaphragms and battery electrodes, and the operation will be repeated in this way.

[0004] As can be seen from the above, each pair of pressing knives needs to be lifted or lowered or slid horizontally synchronously. In the prior art, generally one driving mechanism is used to drive each pair of pressing knives to lift and lower simultaneously, and another driving mechanism is used to drive each pair of pressing knives to slide horizontally simultaneously. In order to save space, the components of the two driving mechanisms are arranged in a staggered manner in a three-dimensional space, which makes equipment maintenance more difficult. Before replacing or removing the target components, it is also necessary to disassemble the components on other mechanisms, resulting in cumbersome equipment maintenance and long maintenance time. Utility Model Content

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present utility model provides a battery core stacking platform with a modular structure, in which the modules are relatively independent and easy to repair and maintain.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0007] An example of the present application provides a battery cell stacking platform, the battery cell stacking platform comprising:

[0008] A stacking table is used to receive the battery pole pieces and the diaphragm, and the battery pole pieces and the laid diaphragm are stacked on the stacking table; and,

[0009] Two pairs of knife pressing mechanisms are arranged at both ends of the stacking platform along the direction of diaphragm laying, and the two knife pressing mechanisms of each pair of knife pressing mechanisms are arranged oppositely on both sides of the stacking platform. The two pairs of knife pressing mechanisms are used to press the laid battery pole pieces in turn, wherein each knife pressing mechanism includes:

[0010] A base is detachably arranged on one side of the stacking table;

[0011] A longitudinal sliding mechanism is mounted on the base;

[0012] A transverse sliding mechanism, which is arranged on the longitudinal sliding mechanism and can be driven by the longitudinal sliding mechanism to change its longitudinal distance relative to the base;

[0013] The pressing knife is installed on the transverse sliding mechanism and has a pressing portion extending toward the stacking platform, and the pressing knife can be driven by the transverse sliding mechanism to adjust the distance from the pressing portion to the side edge of the battery pole piece.

[0014] The battery cell stacking platform provided in the present application has the knife pressing mechanisms arranged in pairs at both ends of the stacking platform which are independent of each other, and the knife pressing mechanisms include four modules: a base, a longitudinal sliding mechanism, a transverse sliding mechanism and a knife pressing mechanism. The modules are highly independent from each other and can be maintained and repaired individually.

[0015] Optionally, the longitudinal sliding mechanism includes:

[0016] A longitudinal guide rail is arranged on the base and extends in the longitudinal direction;

[0017] A longitudinal slide, on which a transverse sliding mechanism is mounted;

[0018] The longitudinal driving mechanism is used to drive the longitudinal slide to slide on the longitudinal guide rail.

[0019] A longitudinal driving mechanism is adopted to drive the longitudinal slide to slide on the longitudinal guide rail to achieve height adjustment of the press knife. The sliding structure is simple, easy to set and install, and has a long service life.

[0020] Optionally, the longitudinal drive mechanism comprises:

[0021] A longitudinal drive motor is arranged on the base;

[0022] A longitudinal lead screw is mounted on the base and has a length extending in the longitudinal direction, and rotates along its own axis when driven by the longitudinal drive motor;

[0023] The longitudinal sliding part is threadably arranged on the longitudinal lead screw and is connected with the transverse sliding mechanism.

[0024] The longitudinal movement of the pressing knife is driven by a longitudinal driving motor, a longitudinal lead screw and a longitudinal sliding part to achieve compression of the stacked battery pole pieces, which can ensure that the pressing knife moves with relatively high precision and high stability.

[0025] Optionally, a first driving wheel is provided at the driving end of the longitudinal driving motor, a first driven wheel is provided at one end of the longitudinal lead screw, and the first driving wheel drives the first driven wheel through a first belt.

[0026] The pulley drive structure is adopted, which is convenient for replacement, low cost and high maintenance efficiency.

[0027] Optionally, the base includes a side wall and a base that are integrally connected, the side wall extends in a vertical direction, the base extends in a horizontal direction, an opening is formed on the base, the longitudinal drive motor and the longitudinal screw are both mounted on the side wall, and the driving end of the longitudinal drive motor and one end of the longitudinal screw both extend toward the opening, and the first drive wheel, the first belt and the first driven wheel are all located in the opening.

[0028] By arranging an opening on the base to accommodate the motor driving end, the driven end of the screw, and the first belt, it is possible to save additional space and provide certain protection for the motor driving end, the driven end of the screw, and the first belt to avoid damage from collision.

[0029] Optionally, the lateral sliding mechanism includes:

[0030] A transverse guide rail is slidably arranged on the longitudinal guide rail and extends in the transverse direction;

[0031] A transverse slide with a press knife mounted thereon;

[0032] The transverse driving mechanism is used to drive the transverse slide to slide on the transverse guide rail.

[0033] A transverse driving mechanism is adopted to drive the transverse slide to slide on the transverse guide rail to realize the transverse adjustment of the press knife. The sliding structure is simple, easy to set and install, and has a long service life.

[0034] Optionally, the transverse drive mechanism and the longitudinal drive mechanism both include a motor and a screw, the screw is driven to rotate by the motor, the motor of the transverse drive mechanism and the motor of the longitudinal drive mechanism are installed on the base independently and without interfering with each other, and the screw of the transverse drive mechanism and the screw of the longitudinal drive mechanism have different extension directions.

[0035] Different motors are installed on the base to drive the lead screws of the transverse drive mechanism and the longitudinal drive mechanism respectively, so that the motor of the transverse drive mechanism and the motor of the longitudinal drive mechanism are independent of each other and do not interfere with each other, which is convenient for maintenance, disassembly and repair of individual components.

[0036] Optionally, the lateral driving mechanism comprises:

[0037] A transverse drive motor is arranged on the transverse guide rail;

[0038] A transverse lead screw is fixedly connected to the transverse guide rail and has a length extending in the transverse direction, and rotates along its own axis when driven by the transverse drive motor;

[0039] The transverse sliding part is arranged on the transverse lead screw in a threaded manner and is connected with the pressing knife.

[0040] The lateral movement of the pressing knife is driven by a lateral driving motor, a lateral lead screw and a lateral sliding part to achieve the pressing of the stacked battery pole pieces, which can ensure that the pressing knife moves with relatively high precision and high stability.

[0041] Optionally, a second driving wheel is provided at the driving end of the transverse driving motor, a second driven wheel is provided at one end of the transverse lead screw, and the second driving wheel drives the second driven wheel through a second belt.

[0042] The pulley drive structure is adopted, which is convenient for replacement, low cost and high maintenance efficiency.

[0043] Optionally, the base includes a side wall and a base integrally connected, the side wall extends in a vertical direction, the base extends in a horizontal direction, the transverse drive motor and the transverse screw are respectively installed on the side wall, and the driving end of the transverse drive motor and one end of the transverse screw both extend to a side away from the stacking platform, and the second drive wheel, the second belt and the second driven wheel are all located outside the side wall.

[0044] A base and side walls are vertically fixedly connected, and a transverse drive motor is arranged on the side of the side wall away from the stacking platform, so as to facilitate the inspection and maintenance of the transverse drive motor on the outside; in addition, the transverse lead screw extends horizontally to one side of the stacking platform, and the transverse sliding part is realized by the transverse lead screw, which has a simple structure and is easy to maintain.

[0045] Optionally, the transverse drive motor and the transverse lead screw are respectively installed on two side surfaces of the side wall and are staggered in height, and a protective cover is provided on the outside of the second drive wheel, the second belt and the second driven wheel.

[0046] The transverse drive motor and the transverse lead screw are installed at two sides with a height staggered, so that the belt and the protective cover can extend obliquely as much as possible, which helps to save space in the horizontal direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram of the structure of a battery cell stacking platform provided in an embodiment of the present application;

[0048] Figure 2 A schematic structural diagram of a single knife pressing mechanism provided in an embodiment of the present application at a first viewing angle;

[0049] Figure 3 A partial structural schematic diagram of a single knife pressing mechanism provided in an embodiment of the present application;

[0050] Figure 4 A schematic structural diagram of a single knife pressing mechanism provided in an embodiment of the present application at a second viewing angle;

[0051] Figure 5A schematic structural diagram of a single knife pressing mechanism provided in an embodiment of the present application from a third perspective.

[0052] Description of reference numerals:

[0053] 1- stacking table; 2- knife pressing mechanism;

[0054] 21-base; 22-lateral sliding mechanism; 23-longitudinal sliding mechanism; 24-pressing knife;

[0055] 211-base; 212-side wall; 221-transverse guide rail; 222-transverse slide seat; 223-transverse driving mechanism; 231-longitudinal guide rail; 232-longitudinal slide seat; 233-longitudinal driving mechanism;

[0056] 2111-opening; 2231-lateral driving motor; 2232-lateral lead screw; 2233-lateral sliding portion; 2234-second driving wheel; 2235-second driven wheel; 2236-second belt; 2331-longitudinal driving motor; 2332-longitudinal lead screw; 2333-longitudinal sliding portion; 2334-first driving wheel; 2335-first driven wheel; 2336-first belt. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0058] Reference Figures 1 to 5 As shown, the embodiment of the present application provides a battery cell stacking platform, wherein Figure 1 It is a structural diagram of the battery cell stacking platform. Figure 2 It is a structural schematic diagram of a single knife pressing mechanism 2 at a first viewing angle. The battery cell stacking platform includes a stacking platform 1 and two pairs of knife pressing mechanisms 2 located at both ends of the stacking platform 1. The stacking platform 1 is used to receive battery pole pieces and diaphragms (not shown in the figure), and the battery pole pieces and the laid diaphragms are stacked on the stacking platform 1, that is, the battery pole pieces and the diaphragms are stacked in sequence to form a battery cell structure.

[0059] The diaphragm is transported to the stacking table 1 through the diaphragm conveying mechanism. The stacking table 1 extends along the diaphragm conveying (laying) direction and has a certain length. A pair of knife pressing mechanisms 2 are respectively arranged at both ends of the stacking table 1 along the diaphragm conveying direction; wherein, the two knife pressing mechanisms 2 in each pair of knife pressing mechanisms 2 are relatively arranged on both sides of the stacking table 1 perpendicular to the diaphragm conveying (laying) direction, and the two pairs of knife pressing mechanisms 2 operate in turn, and each time a pair of knife pressing mechanisms operates, they slide from the opposite sides of the stacking table 1 toward the stacking table 1, so that the sides of the battery electrodes laid on the stacking table 1 are pressed, so that the diaphragm is folded and laid on the battery electrodes.

[0060] For example, during specific operation, a pair of pressing knife mechanisms 2 at one end of the stacking table 1 presses the negative electrode sheet to ensure the position stability of the negative electrode sheet on the diaphragm, and then the stacking table 1 and the diaphragm conveying mechanism are used to fold the diaphragm in one direction and lay it on the negative electrode sheet, and then the positive electrode sheet is placed on the current diaphragm, and then a pair of pressing knife mechanisms 2 at the other end of the stacking table 1 presses the positive electrode sheet, and the stacking table 1 and the diaphragm conveying mechanism are used to press the diaphragm on the positive electrode sheet, and the diaphragm is folded, the negative electrode sheet is placed, the diaphragm is folded, and the positive electrode sheet is placed in this cycle. In this cycle, the two pairs of pressing knife mechanisms 2 work in turn and press on the battery electrode sheet, which not only ensures the position stability of the battery electrode sheet on the diaphragm, but also realizes the folding of the diaphragm.

[0061] Combination Figure 2 As shown, each knife pressing mechanism 2 includes: a base 21, a longitudinal sliding mechanism 23 installed on the base 21, and a transverse sliding mechanism 22 arranged on the longitudinal sliding mechanism 23. Specifically, the base 21 is detachably arranged on one side of the stacking platform, the longitudinal sliding mechanism 23 can slide along the vertical direction of the stacking platform, and the transverse sliding mechanism 22 can be driven by the longitudinal sliding mechanism 23 to change its longitudinal distance relative to the base 21; and a knife pressing 24 is supported and arranged at the top end of the transverse sliding mechanism 22 close to the stacking platform 1, and the knife pressing 24 has a pressing part for pressing the battery pole piece, and the pressing part extends in the direction close to the stacking platform 1 and is suspended. When the knife pressing 24 can be driven to move by the transverse sliding mechanism 22, the distance from the pressing part to the side of the battery pole piece can be adjusted.

[0062] The battery cell stacking platform provided in the present application has the knife pressing mechanisms 2 arranged in pairs at both ends of the stacking platform 1, which are independent of each other, and the knife pressing mechanism 2 includes four modules: a base 21, a longitudinal sliding mechanism 23, a transverse sliding mechanism 22 and a knife pressing mechanism 24. The modules are highly independent and can be maintained and repaired separately.

[0063] Combination Figure 2 and Figure 3As shown, in one embodiment, the longitudinal sliding mechanism 23 includes a longitudinal guide rail 231, a longitudinal slide 232, and a longitudinal driving mechanism 233. The longitudinal guide rail 231 is arranged on the base 21 and extends in the longitudinal direction, and a longitudinal slide 232 is provided on the longitudinal guide rail 231 to slide along the longitudinal extension by the longitudinal driving mechanism 233, so as to adjust the height position of the pressing knife 24. In addition, a transverse sliding mechanism 22 is also installed on the longitudinal slide 232 to adjust the horizontal position of the pressing knife 24, and the sliding movements of the transverse sliding mechanism 22 and the longitudinal sliding mechanism 23 cooperate with each other, so that the pressing part of the pressing knife 24 can press the side of the battery pole piece or withdraw from the side of the battery pole piece.

[0064] In addition, the number of the longitudinal guide rails 231 and longitudinal slides 232 that cooperate with each other can be one or more to increase the stability of the structure. When more than one longitudinal guide rails 231 and longitudinal slides 232 are used, they can be synchronously driven by the same longitudinal drive mechanism 233. The longitudinal drive mechanism 233 is used to drive the longitudinal slide 232 to slide on the longitudinal guide rail 231 to achieve the height adjustment of the press knife 24. The sliding structure is simple, easy to set and install, and has a long service life.

[0065] The longitudinal drive mechanism 233 can directly drive the longitudinal slide 232 by means of a motor and a gear combination, or can drive the longitudinal slide 232 by means of a motor and a lead screw, or can adopt other driving methods. In this embodiment, the longitudinal drive mechanism 233 is used to drive the longitudinal movement of the pressure portion on the pressing knife 24 to achieve the pressing of the stacked battery pole pieces. The movement is relatively short, and the requirements for the accuracy and stability of the movement are relatively high. Therefore, the driving method of the motor and the lead screw is preferred.

[0066] Combination Figure 2 and Figure 3As shown, this embodiment provides a driving method, and the longitudinal driving mechanism 233 includes a longitudinal driving motor 2331, a longitudinal lead screw 2332 and a longitudinal sliding part 2333. Among them, the longitudinal driving motor 2331 is arranged on the base 21 to provide driving force; the longitudinal lead screw 2332 is installed on the base 21 and has a length extending along the longitudinal direction. One end of the longitudinal lead screw 2332 is connected with the longitudinal driving motor 2331 to be driven by the driving motor 2331, and the other end of the longitudinal lead screw 2332 is rotatably installed on the base 21. The longitudinal lead screw 2332 can rotate along its own axis when driven by the longitudinal driving motor 2331; the longitudinal lead screw 2332 is fixedly connected with the longitudinal sliding part 2333 through threaded cooperation, and the longitudinal sliding part 2333 realizes longitudinal movement through the rotation of the longitudinal lead screw 2332; and the longitudinal sliding part 2333 is fixedly connected with the longitudinal slide 232 to realize the longitudinal movement of the longitudinal slide 232 on the longitudinal guide rail 231. In addition, the longitudinal sliding portion 2333 is also connected to the transverse sliding mechanism 22, so as to simultaneously adjust the longitudinal position and transverse position of the pressing knife 24, so as to realize the action of the pressing knife 24 pressing the side of the battery pole piece or withdrawing from the side of the battery pole piece.

[0067] The longitudinal driving motor 2331, the longitudinal lead screw 2332 and the longitudinal sliding part 2333 are used to drive the longitudinal movement of the pressure part on the pressing knife 24 to achieve the pressing action, which can ensure that the movement of the pressing knife 24 is relatively high in accuracy and high in stability.

[0068] Continue to attach Figure 3 As shown, as one embodiment, the driving end of the longitudinal drive motor 2331 is provided with a first driving wheel 2334, and one end of the longitudinal lead screw 2332 is provided with a first driven wheel 2335. The first driving wheel 2334 drives the first driven wheel 2335 through a first belt 2336, thereby realizing the driving of the longitudinal lead screw 2332 by the longitudinal drive motor 2331. The structure of the pulley drive is convenient for replacement, low cost, and high maintenance efficiency. In addition, the longitudinal drive motor 2331 can also directly drive the longitudinal lead screw 2332 by a gear combination.

[0069] like Figure 4As shown, the base 21 includes an integrally connected side wall 212 and a base 211, the side wall 212 and the base 211 are vertically fixedly connected, the side wall 212 extends in the vertical direction, and the base 211 extends in the horizontal direction. The longitudinal driving motor 2331, the longitudinal lead screw 2332 and the longitudinal sliding part 2333 in the longitudinal sliding mechanism 23 are all installed on the side wall 212. And a groove-type or through-type opening 2111 is formed on the base 211, and the driving end of the longitudinal driving motor 2331 and one end of the longitudinal lead screw 2332 extend toward the opening 2111, so that the first driving wheel 2334, the first belt 2336 and the first driven wheel 2335 are all located in the opening 2111. The opening 2111 is provided on the base 211 to accommodate the motor driving end, the lead screw driven end, and the first belt 2336 and protect them to avoid being damaged by collision. Furthermore, it is understandable that providing the opening 2111 on the base to accommodate the driving end of the longitudinal driving motor 2331, the first driving wheel 2334, the first belt 2336 and the first driven wheel 2335 also helps to save additional space.

[0070] like Figure 4 As shown, the transverse sliding mechanism 22 includes a transverse guide rail 221, a transverse slide 222, and a transverse driving mechanism 223. Among them, the transverse guide rail 221 can be set on the longitudinal guide rail 231 in a sliding manner so that the transverse guide rail 221 can slide vertically on the longitudinal guide rail 231, and the transverse guide rail 221 extends in the transverse direction; a slidingly connected transverse slide 222 is set on the transverse guide rail 221, and a press knife 24 is installed on the transverse slide 222 (exemplarily, a base can be set on the transverse slide 222 to support the installation of the press knife 24), and the transverse driving mechanism 223 drives the transverse slide 222 to slide on the transverse guide rail 221 to adjust the transverse position of the press knife 24, so as to adjust the distance between the pressure portion of the press knife 24 and the side of the battery electrode. It can be understood that the distance adjustment can be step-by-step.

[0071] In addition, in this embodiment, the transverse guide rail 221 is arranged on the longitudinal guide rail 231, which can realize the synchronous adjustment of the vertical height position and the transverse position of the pressing knife 24 relative to the stacking table.

[0072] Combination Figure 4 and Figure 5 As shown, in one embodiment, the transverse driving mechanism 223 and the longitudinal driving mechanism 233 both include a motor and a screw, wherein the screw of the transverse driving mechanism 223 and the screw of the longitudinal driving mechanism 233 have different extension directions. For example, the screw of the transverse driving mechanism 223 extends in the transverse direction, and the screw of the longitudinal driving mechanism 233 extends in the longitudinal direction, so as to achieve the adjustment of the horizontal transverse position and the height position of the pressing knife 24.

[0073] The lead screws of the transverse drive mechanism 223 and the longitudinal drive mechanism 233 are both driven to rotate by motors. In the present application, two independent motors are installed on the base 21, which are used to drive the lead screws of the transverse drive mechanism 223 and the longitudinal drive mechanism 233 respectively, so that the motor of the transverse drive mechanism 223 and the motor of the longitudinal drive mechanism 233 are independent of each other and do not interfere with each other, which is convenient for maintenance, disassembly and repair of individual components.

[0074] Combination Figure 4 and Figure 5 As shown, this embodiment provides a driving method, and the transverse driving mechanism 223 includes: a transverse driving motor 2231, a transverse lead screw 2232, and a transverse sliding portion 2233. Among them, the transverse driving motor 2231 is arranged on the transverse guide rail 221; the transverse lead screw 2232 is fixedly connected to the transverse guide rail 221 and has a length extending in the transverse direction, one end of the transverse lead screw 2232 is matched and connected with the transverse driving motor 2231 to be driven by the transverse driving motor 2231, and the other end of the transverse lead screw 2232 is rotatably fixedly installed, and the transverse lead screw 2232 can rotate along its own axis when driven by the transverse driving motor 2231; the transverse lead screw 2232 is fixedly connected with the transverse sliding portion 2233 through threaded matching, and the transverse sliding portion 2233 realizes transverse movement (the aforementioned horizontal direction) through the rotation of the transverse lead screw 2232. In addition, the transverse sliding portion 2233 is arranged on a side close to the stacking table 1 and is fixedly connected to the transverse slide 222, and a base supporting the pressing knife 24 can be set on the transverse sliding portion 2233, so as to realize the transverse movement of the transverse slide 222 on the transverse guide rail 221 and then drive the transverse movement of the pressing knife.

[0075] The lateral movement of the pressing knife 24 is driven by a lateral driving motor 2231, a lateral lead screw 2232 and a lateral sliding portion 2233 to achieve the pressing of the stacked battery pole pieces, which can ensure that the pressing knife 24 moves with relatively high precision and high stability.

[0076] like Figure 5 As shown, as one embodiment, the driving end of the transverse drive motor 2231 is provided with a second drive wheel 2234, and one end of the transverse lead screw 2232 is provided with a second driven wheel 2235, and the second drive wheel 2234 drives the second driven wheel 2235 through a second belt 2236, thereby realizing the driving of the transverse lead screw 2232 by the transverse drive motor 2231. The structure of the pulley drive is convenient for replacement, low cost, and high maintenance efficiency. In addition, the transverse drive motor 2231 can also directly drive the transverse lead screw 2232 by a gear combination.

[0077] Continue as Figure 5As shown, the base 21 includes an integrally connected side wall 212 and a base 211, the side wall 212 and the base 211 are vertically fixedly connected, the side wall 212 extends in the vertical direction, and the base 211 extends in the horizontal direction. The transverse driving motor 2231 and the transverse lead screw 2232 in the transverse sliding mechanism 22 are both installed on the side wall 212, and specifically, the driving end of the transverse driving motor 2231 and one end of the transverse lead screw 2232 are both arranged on the side of the side wall 212 away from the stacking platform 1. A second driving wheel 2234, a second belt 2236 and a second driven wheel 2235 are arranged outside the side wall 212 to facilitate inspection and maintenance. The second driving wheel 2234 is connected to the driving end of the transverse driving motor 2231, and the second driven wheel 2235 is arranged at the end of the transverse lead screw 2232 away from the stacking platform 1. The second belt 2236 is sleeved on the second driving wheel 2234 and the second driven wheel 2235 to play a role in power transmission, and is used to realize the transmission connection between the transverse driving motor 2231 and the transverse lead screw 2232. The transverse lead screw 2232 extends in the horizontal direction of the base 211, and is fixedly connected to the transverse sliding part 2233 close to the side of the stacking platform 1, and the pressing knife 24 on the transverse sliding part 2233 realizes the pressing action of the stacked battery pole pieces.

[0078] A base 211 and a side wall 212 are vertically fixedly connected, and a transverse driving motor 2231 is arranged on the side of the side wall 212 away from the stacking platform 1, and the transverse lead screw 2232 extends along the horizontal direction to one side of the stacking platform 1 to realize the transverse sliding of the transverse sliding part 2233. The structure is simple and easy to maintain.

[0079] like Figure 5 As shown, when a transverse drive motor 2231 and a transverse lead screw 2232 are arranged on the side wall 212, the transverse drive motor 2231 and the transverse lead screw 2232 are respectively installed on the two side surfaces of the side wall 212, wherein the transverse lead screw 2232 and the longitudinal lead screw 2332 are installed on the same surface of the side wall 212, while the transverse drive motor 2231 and the longitudinal drive motor 2331 are installed on the other surface of the side wall 212. In addition, the transverse drive motor 2231 and the transverse lead screw 2232 are staggered in height, so that there is enough space outside the side wall 212 to arrange the second drive wheel 2234, the second belt 2236 and the second driven wheel 2235 to realize the transmission connection between the transverse drive motor 2231 and the transverse lead screw 2232, so that the second belt 2236 and the like can be extended obliquely as much as possible, which helps to save space in the horizontal direction. In addition, a protective cover is provided on the outside of the second drive wheel 2234, the second belt 2236 and the second driven wheel 2235 (refer to Figure 1 to avoid damage to the belt assembly.

[0080] The transverse drive motor 2231 and the transverse screw 2232 are respectively installed on the two side surfaces of the side wall 212, and the external space of the side wall 212 is used to install a transmission connection between the transverse drive motor 2231 and the transverse screw 2232, thereby saving space on one side of the transverse screw 2232 on the side wall 212, and a protective cover is used to protect the second drive wheel 2234, the second belt 2236 and the second driven wheel 2235 to prevent the belt assembly from being damaged.

[0081] In the above description of the present application, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" and the like should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in the present application, those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0082] According to the above description of the present application, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of the present application, and are only for the purpose of facilitating the explanation of the scheme of the present application and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present application.

[0083] In addition, the terms "first" or "second" used in this application to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0084] Although multiple embodiments of the present application have been shown and described herein, it is obvious to those skilled in the art that such embodiments are provided only by way of example. Those skilled in the art can think of many changes, modifications and alternatives without departing from the thought and spirit of the present application. It should be understood that in the process of practicing the present application, various alternatives to the embodiments of the present application described herein can be adopted. The attached claims are intended to limit the scope of protection of the present application, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A battery cell stacking platform, characterized in that: The battery core stacking platform comprises: A stacking table, used for receiving battery pole pieces and diaphragms, on which the battery pole pieces and the laid diaphragms are stacked; and, Two pairs of knife pressing mechanisms are arranged at both ends of the stacking platform along the direction of laying the diaphragm, and the two knife pressing mechanisms of each pair of knife pressing mechanisms are arranged on both sides of the stacking platform opposite to each other. The two pairs of knife pressing mechanisms are used to press the laid battery pole pieces in turn, wherein each of the knife pressing mechanisms includes: A base, detachably arranged on one side of the stacking platform; A longitudinal sliding mechanism, mounted on the base; A transverse sliding mechanism, which is arranged on the longitudinal sliding mechanism and can be driven by the longitudinal sliding mechanism to change its longitudinal distance relative to the base; A pressing knife is installed on the lateral sliding mechanism and has a pressing portion extending toward the stacking platform, and the pressing knife can be driven by the lateral sliding mechanism to adjust the distance from the pressing portion to the side edge of the battery pole piece.

2. The battery cell stacking platform according to claim 1, characterized in that: The longitudinal sliding mechanism comprises: A longitudinal guide rail, arranged on the base and extending in the longitudinal direction; a longitudinal slide, on which the transverse sliding mechanism is mounted; The longitudinal driving mechanism is used to drive the longitudinal slide to slide on the longitudinal guide rail.

3. The battery core stacking platform according to claim 2, characterized in that: The longitudinal driving mechanism comprises: A longitudinal drive motor is arranged on the base; A longitudinal lead screw, mounted on the base and having a length extending in the longitudinal direction, and rotating along its own axis when driven by the longitudinal drive motor; The longitudinal sliding part is threadably arranged on the longitudinal lead screw and connected to the transverse sliding mechanism.

4. The battery core stacking platform according to claim 3, characterized in that: A first driving wheel is disposed at the driving end of the longitudinal driving motor, a first driven wheel is disposed at one end of the longitudinal lead screw, and the first driving wheel drives the first driven wheel through a first belt.

5. The battery cell stacking platform according to claim 4, characterized in that: The base includes a side wall and a base that are integrally connected, the side wall extends in a vertical direction, the base extends in a horizontal direction, an opening is formed on the base, the longitudinal drive motor and the longitudinal lead screw are both mounted on the side wall, and the drive end of the longitudinal drive motor and one end of the longitudinal lead screw both extend toward the opening, and the first drive wheel, the first belt and the first driven wheel are all located in the opening.

6. The battery cell stacking platform according to claim 2, characterized in that: The lateral sliding mechanism comprises: A transverse guide rail, slidably disposed on the longitudinal guide rail and extending in the transverse direction; A transverse slide, on which the pressing knife is mounted; The transverse driving mechanism is used to drive the transverse slide to slide on the transverse guide rail.

7. The battery cell stacking platform according to claim 6, characterized in that: The transverse driving mechanism and the longitudinal driving mechanism both include a motor and a screw, the screw is driven to rotate by the motor, the motor of the transverse driving mechanism and the motor of the longitudinal driving mechanism are installed on the base independently and without interfering with each other, and the screw of the transverse driving mechanism and the screw of the longitudinal driving mechanism have different extension directions.

8. The battery cell stacking platform according to claim 6, characterized in that: The lateral driving mechanism comprises: A transverse drive motor, arranged on the transverse guide rail; A transverse lead screw, fixedly connected to the transverse guide rail and having a length extending in the transverse direction, and rotating along its own axis when driven by the transverse drive motor; The transverse sliding part is arranged on the transverse lead screw in a threaded manner and is connected to the pressing knife.

9. The battery cell stacking platform according to claim 8, characterized in that: A second driving wheel is disposed at the driving end of the transverse driving motor, a second driven wheel is disposed at one end of the transverse lead screw, and the second driving wheel drives the second driven wheel through a second belt.

10. The battery cell stacking platform according to claim 9, characterized in that: The base includes a side wall and a base that are integrally connected, the side wall extends in the vertical direction, and the base extends in the horizontal direction, the transverse drive motor and the transverse lead screw are respectively installed on the side wall, and the driving end of the transverse drive motor and one end of the transverse lead screw both extend to a side away from the stacking platform, and the second drive wheel, the second belt and the second driven wheel are all located outside the side wall.

11. The battery core stacking platform according to claim 10, characterized in that: The transverse drive motor and the transverse lead screw are respectively installed on two side surfaces of the side wall and are staggered in height. The second drive wheel, the second belt and the second driven wheel are provided with protective covers on the outside.

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