Pole piece assembling mechanism, electric pile material pre-assembling device and working method of electric pile material pre-assembling device

Abstract

The invention belongs to the technical field of conductive connection, and particularly relates to an assembling mechanism for keeping combined pole pieces clamped, in particular to a pole piece assembling mechanism, an electric pile material pre-assembling device and a working method of the electric pile material pre-assembling device. Wherein the pole piece assembling mechanism is provided with an assembling plate; a rotating arm; a first lifting assembly; a second lifting assembly; the pressing frame is provided with a square opening matched with the pressing plate. And elastic anti-clamping pieces are embedded in the side walls of the pressing plates. The elastic anti-clamping piece is arranged on the side wall of the pressing plate, so that when the pressing frame is separated from the pressing plate, the elastic anti-clamping piece can automatically and dynamically adjust the levelness of the pole piece frame falling into the pressing plate, and the problem that the pole piece frame is inclined and clamped is effectively avoided; when the pressing frame and the pressing plate are pressed in a matched mode, the elastic anti-clamping piece is pressed to retract, accurate assembly of the pole piece frame and the membrane electrode is guaranteed, pole piece damage caused by rigid contact is prevented through the elastic buffering effect, and therefore the assembly yield of the galvanic pile pole piece is remarkably increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of conductive connection, and specifically relates to an assembly mechanism for keeping combined pole pieces clamped, and more particularly to a pole piece assembly mechanism, a battery stack material preassembly device and a working method thereof. Background Art

[0002] Pole piece assembly is a key step in the battery stack manufacturing process.

[0003] The electrode assembly device in the related art usually adopts a fixed pressing structure. During the assembly process, the matching accuracy between the electrode frame and the pressing plate is required to be extremely high. However, since the side walls of the pressing plate of the existing pressing device are mostly rigid structures (such as flat or simple inclined surface designs), during the falling process of the electrode frame, the inner edge of the electrode frame is very likely to lose its level due to placement errors or vibrations, causing it to tilt and then get stuck on the side walls around the pressing plate. As a result, when the pressing frame is pressed against the electrode frame, the electrode frame is easily damaged, resulting in a decrease in the yield of the assembled electrode. At the same time, the jamming phenomenon not only causes the assembly process to be interrupted, but also requires manual intervention for repeated adjustments, which significantly reduces production efficiency.

[0004] Therefore, how to prevent the electrode frame from being stuck around the pressing plate during electrode assembly is a technical problem that needs to be solved urgently.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a pole piece assembly mechanism, a battery stack material preassembly device, and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a pole piece assembly mechanism, comprising: Assemble the board; a rotating arm disposed above the assembly plate; a first lifting assembly, which is arranged on the rotating arm, and a pressing frame is connected to the end of the first lifting assembly, and the pressing frame is used to press the pole piece frame onto the assembly plate; a second lifting assembly, which is arranged on the rotating arm, and a pressing plate is connected to the end of the second lifting assembly, and the pressing plate is used to press the membrane electrode onto the assembly plate; Wherein, the pressing frame is provided with a square opening adapted to the pressing plate; The side walls of the pressing plate are all embedded with elastic anti-stuck parts; When the pressing frame is separated from the pressing plate, the elastic anti-stuck member extends from the side wall of the pressing plate to form a horizontal support for the inner edge of the pole piece frame 710 that falls into the pressing plate 600; When the square opening of the pressing frame is sleeved on the pressing plate, the elastic anti-carding part is squeezed to accommodate the elastic anti-carding part into the side wall of the pressing plate, thereby pressing the electrode frame onto the assembly plate and cooperating with the membrane electrode to complete the assembly.

[0008] In an optional embodiment, the side wall of the pressing plate includes an inclined guide surface and a vertical butt joint surface; The inclined guide surface is arranged above the vertical butt joint surface, and the four inclined guide surfaces of the pressing plate are arranged in a closed shape from bottom to top.

[0009] In an optional embodiment, the vertical docking surface is provided with a receiving groove; The elastic anti-stuck component is elastically connected to the accommodating groove via a return spring.

[0010] In an optional embodiment, the protruding end of the elastic anti-stuck member is provided with an adjustment surface and a vertical guide surface; Furthermore, the adjustment surface is arranged above the vertical guide surface; Wherein, the inclination direction of the adjustment surface is consistent with the inclination direction of the inclined guide surface; When the pressing frame is separated from the pressing plate, the return spring returns to its natural state. At this time, part of the adjustment surface extends from the accommodating groove, and the horizontality of the pole piece frame falling into the pressing plate is adjusted by the adjustment surface. When the square mouth of the pressing frame is placed on the pressing plate, it drives the electrode frame to move downward and squeezes the adjustment surface at the same time to complete the adjustment of the horizontality of the electrode frame. After the elastic anti-blocking part is accommodated in the side wall of the pressing plate, the electrode frame falls vertically along the vertical docking surface and cooperates with the membrane electrode under the pressing of the pressing frame to complete the assembly.

[0011] In an optional embodiment, the inclination angle of the inclined guide surface is α; The inclination angle of the adjustment surface is β; The range of α is between 60° and 80°, and the range of β is between 20° and 40°.

[0012] In an optional embodiment, the bottom surface of the pressing plate is provided with an air suction hole; The air suction hole is communicated with the receiving groove; When the elastic anti-stuck member extends from the accommodating groove, the membrane electrode is adsorbed on the bottom surface of the pressing plate through the suction hole, thereby preventing the pressing plate from being misaligned with the membrane electrode when the pressing plate deviates.

[0013] In an optional embodiment, the first lifting assembly includes: a first cylinder and a second cylinder; The first cylinder and the second cylinder are arranged opposite to each other and are both connected to the rotating arm; The ends of the piston rods of the first cylinder and the second cylinder are fixedly connected to the pressing frame.

[0014] In an optional embodiment, the second lifting assembly includes: The third cylinder and the gripping head; The third cylinder is connected to the rotating arm; Furthermore, the grabbing head is fixedly arranged on the piston rod of the third cylinder and is used for grabbing the pressing frame.

[0015] In an optional embodiment, a first regulating cylinder and a second regulating cylinder are respectively provided on two adjacent side walls of the assembly plate; A pusher plate is provided on the piston rod of the first regulating cylinder and the second regulating cylinder; Furthermore, the first regulating cylinder and the second regulating cylinder are used to adjust the position of the membrane electrode placed on the assembly plate by the external robotic arm so that the center point of the membrane electrode coincides with the center point of the assembly plate.

[0016] In a second aspect, an embodiment of the present disclosure further provides a stack material preassembly device, comprising: work platform; A fuel cell stack pre-assembly mechanism, which is provided on the work platform and is used for assembling the fuel cell stack; Two pole piece assembly mechanisms as described above, which are respectively arranged on both sides of the stack pre-assembly mechanism and are used to assemble cathode pieces and anode pieces respectively; A robotic arm used to transport battery stack materials; The control module is configured to control the robotic arm to place the corresponding battery stack materials in sequence on the corresponding electrode assembly mechanism to complete the assembly of the cathode and anode sheets, and to alternately place the assembled cathode and anode sheets on the battery stack pre-assembly mechanism to complete the pre-assembly of the battery stack.

[0017] In a third aspect, the present disclosure also provides a method for operating the stack material preassembly device as described above. The method includes: The control module controls the robotic arm to place the corresponding electrode frame and membrane electrode to the corresponding electrode assembly mechanism; The control module controls the corresponding electrode assembly mechanism to complete the assembly of the cathode and anode sheets; The control module controls the robotic arm to alternately place the assembled cathode sheets and anode sheets on the stack pre-assembly mechanism; The control module controls the stack pre-assembly mechanism to complete the assembly of the stack materials.

[0018] The beneficial effect of the present invention is that the electrode assembly mechanism, battery stack material pre-assembly device and working method thereof provide elastic anti-jamming parts on the side walls of the pressing plate, so that when the pressing frame is separated from the pressing plate, the elastic anti-jamming parts can automatically and dynamically adjust the horizontality of the electrode frame that falls into the pressing plate, effectively avoiding the problem of tilting and jamming of the electrode frame; when the pressing frame and the pressing plate are pressed together, the elastic anti-jamming parts are compressed and retracted, which not only ensures the precise assembly of the electrode frame and the membrane electrode, but also prevents the damage of the electrode caused by rigid contact through elastic buffering, thereby significantly improving the assembly yield of the battery stack electrode.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a pole piece assembly mechanism provided in an embodiment of the present disclosure; Figure 2 A schematic diagram of the structure of the pressing frame and the pressing plate provided in an embodiment of the present disclosure when they are separated; Figure 3 A schematic diagram of the state of the electrode frame before it falls into the pressing plate provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of the state when the pressing frame according to the embodiment of the present disclosure drives the electrode frame to squeeze the elastic anti-stuck member; Figure 5 A schematic diagram of the state where the pressing frame and pressing plate provided in the embodiment of the present disclosure match the electrode frame and the membrane electrode; Figure 6A cross-sectional view of a press plate provided in accordance with an embodiment of the present disclosure; Figure 7 A cross-sectional view of a pole piece assembly mechanism provided in an embodiment of the present disclosure; Figure 8 A schematic structural diagram of a battery stack material preassembly device provided in an embodiment of the present disclosure; Figure 9 A flowchart of a working method of a battery stack material preassembly device according to an embodiment of the present disclosure; Figure 10 This is a schematic diagram of the electrical control principle of the stack material preassembly device provided in an embodiment of the present disclosure.

[0023] In the figure: 100, assembly plate; 110, first adjusting cylinder; 120, second adjusting cylinder; 200, rotating arm; 300, first lifting assembly; 310, first cylinder; 320, second cylinder; 400, second lifting assembly; 410, third cylinder; 420, grabbing head; 500, pressing frame; 510, square mouth; 600, pressing plate; 610, elastic anti-stuck part; 611, adjustment surface; 612, vertical guide surface; 620, return spring; 630, suction hole; 640, receiving groove; 650, inclined guide surface; 660, vertical docking surface; 710, pole piece frame; 720, membrane electrode; 800, working platform; 900, stack pre-assembly mechanism. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0026] As used herein, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0028] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0029] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0030] Research has found that in related technologies, during the falling process of the pole piece frame, the horizontality of the inner edge of the pole piece frame will decrease and tilt, which will cause the pole piece frame to be stuck on the side walls around the pressing plate, resulting in the pole piece frame being easily damaged when the pressing frame is pressed against the pole piece frame.

[0031] Based on the above research, the embodiments of the present disclosure provide a pole piece assembly mechanism, a battery stack material pre-assembly device and a working method thereof. By setting an elastic anti-stuck component 610, the horizontality of the pole piece frame 710 is dynamically adjusted, thereby avoiding the problem of tilting and jamming of the pole piece frame 710.

[0032] The defects in the above solutions are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0035] See also Figure 1 and Figure 2 At least one embodiment provides a pole piece assembly mechanism, comprising: an assembly plate 100; a rotating arm 200, which is arranged above the assembly plate 100; a first lifting component 300, which is arranged on the rotating arm 200, and the end of the first lifting component 300 is connected to a pressing frame 500, and the pressing frame 500 is used to press the pole piece frame 710 onto the assembly plate 100; a second lifting component 400, which is arranged on the rotating arm 200, and the end of the second lifting component 400 is connected to a pressing plate 600, and the pressing plate 600 is used to press the membrane electrode 720 onto the assembly plate 100; wherein, the pressing frame 500 is provided with a square opening 510 adapted to the pressing plate 600; the side walls of the pressing plate 600 are embedded with elastic anti-stuck parts 610.

[0036] When the pressing frame 500 is separated from the pressing plate 600, the elastic anti-stuck member 610 extends from the side wall of the pressing plate 600. Figure 3 As shown, the pole piece frame 710 (along the Figure 3F in the middle) forms a horizontal support to prevent the pole piece frame 710 from being stuck with the side wall of the pressing plate 600; when the square opening 510 of the pressing frame 500 is sleeved on the pressing plate 600, the elastic anti-stuck member 610 is squeezed in the extrusion direction as shown in FIG. Figure 4 As shown in FIG. 5 , the elastic anti-stuck member 610 is accommodated in the side wall of the pressing plate 600, and the schematic diagram of the pressing plate 600 is shown in FIG. Figure 5 As described above, the electrode frame 710 is pressed onto the assembly plate 100 and matched with the membrane electrode 720 to complete the assembly.

[0037] By arranging an elastic anti-jamming component 610 on the side wall of the pressing plate 600, when the pressing frame 500 is separated from the pressing plate 600, the elastic anti-jamming component 610 can automatically and dynamically adjust the horizontality of the pole piece frame 710 that falls into the pressing plate 600, effectively avoiding the problem of the pole piece frame 710 being tilted and stuck; when the pressing frame 500 and the pressing plate 600 are pressed together, the elastic anti-jamming component 610 is compressed and retracted, which not only ensures the precise assembly of the pole piece frame 710 and the membrane electrode 720, but also prevents the pole piece damage caused by rigid contact through the elastic buffering effect, thereby significantly improving the assembly yield of the battery stack pole piece.

[0038] See also Figure 3 The sidewalls of the press plate 600 include inclined guide surfaces 650 and vertical docking surfaces 660. The inclined guide surfaces 650 are positioned above the vertical docking surfaces 660, and the four inclined guide surfaces 650 of the press plate 600 are arranged in a closed shape from bottom to top. The closed-shaped inclined guide surfaces 650 on the sidewalls of the press plate 600 form a guide channel. The inclined guide surfaces 650 guide the pole piece frame 710 as it falls, causing it to fall into the elastic anti-stuck member 610. The falling press frame 500 squeezes the elastic anti-stuck member 610 to adjust the horizontality of the pole piece frame 710.

[0039] See also Figure 6 The vertical docking surface 660 defines a receiving groove 640 ; the elastic anti-stuck member 610 is elastically connected to the receiving groove 640 via a return spring 620 . Specifically, the extended end of the elastic anti-stuck member 610 is provided with an adjustment surface 611 and a vertical guide surface 612 ; the adjustment surface 611 is disposed above the vertical guide surface 612 ; the inclination direction of the adjustment surface 611 is consistent with the inclination direction of the inclined guide surface 650 .

[0040] When the pressing frame 500 is separated from the pressing plate 600, the reset spring 620 returns to its natural state. At this time, part of the adjustment surface 611 extends from the accommodating groove 640, and the horizontality of the electrode frame 710 that falls into the pressing plate 600 is adjusted through the adjustment surface 611; when the square opening 510 of the pressing frame 500 is sleeved on the pressing plate 600, it drives the electrode frame 710 to move downward, and at the same time squeezes the adjustment surface 611 to complete the adjustment of the horizontality of the electrode frame 710. After the elastic anti-locking part 610 is accommodated in the side wall of the pressing plate 600, the electrode frame 710 falls vertically along the vertical docking surface 660, and under the pressing of the pressing frame 500, cooperates with the membrane electrode 720 to complete the assembly.

[0041] By designing the gradient angles of the adjustment surface 611 and the vertical guide surface 612, a dual-stage horizontal calibration mechanism is formed. This allows for graded control of coarse and fine adjustments, effectively eliminating positional deviations of the electrode frame 710 and improving assembly accuracy between the electrode and membrane electrode 720.

[0042] Please continue reading Figure 6 Specifically, the inclined guide surface 650 has an inclination angle of α, and the adjustment surface 611 has an inclination angle of β. α ranges from 60° to 80°, and β ranges from 20° to 40°. The inclination angle α is greater than the inclination angle β, so that the inclined guide surface 650 quickly guides the pole piece frame 710 and the pressing frame 500. When the pressing frame 500 is pressed downward, the pole piece frame 710 is pressed against the adjustment surface 611, and the adjustment surface 611 fine-tunes the horizontality of the pole piece frame 710, thereby reducing the sticking of the pole piece frame 710.

[0043] See also Figure 6 The bottom surface of the pressing plate 600 is provided with an air suction hole 630; the air suction hole 630 is connected to the accommodating groove 640; when the elastic anti-stuck component 610 extends from the accommodating groove 640, the membrane electrode 720 is adsorbed on the bottom surface of the pressing plate 600 through the air suction hole 630, thereby preventing the pressing plate 600 from being misaligned with the membrane electrode 720 when an offset occurs.

[0044] The membrane electrode 720 is adsorbed through the suction hole 630 to avoid displacement of the pressing plate 600 when the pressing frame 500 is pressed down, resulting in misalignment between the pressing plate 600 and the membrane electrode 720, thereby ensuring the matching accuracy between the electrode frame 710 and the membrane electrode 720.

[0045] See also Figure 7The first lifting assembly 300 includes: a first cylinder 310 and a second cylinder 320; the first cylinder 310 and the second cylinder 320 are arranged opposite to each other and are both connected to the rotating arm 200; the ends of the piston rods of the first cylinder 310 and the second cylinder 320 are fixedly connected to the pressing frame 500, and the second lifting assembly 400 includes: a third cylinder 410 and a grabbing head 420; the third cylinder 410 is connected to the rotating arm 200; and the grabbing head 420 is fixedly arranged on the piston rod of the third cylinder 410 and is used to grab the pressing frame 500.

[0046] To ensure the matching accuracy between the membrane electrode 720 and the pressing plate 600, please continue to refer to Figure 1 A first adjusting cylinder 110 and a second adjusting cylinder 120 are respectively provided on the two adjacent side walls of the assembly plate 100; a push plate is provided on the piston rods of the first adjusting cylinder 110 and the second adjusting cylinder 120; and the first adjusting cylinder 110 and the second adjusting cylinder 120 are used to adjust the position of the membrane electrode 720 placed on the assembly plate 100 by the external robotic arm, so that the center point of the membrane electrode 720 coincides with the center point of the assembly plate 100.

[0047] The center point of the membrane electrode 720 is adjusted by the first regulating cylinder 110 and the second regulating cylinder 120 to ensure that the membrane electrode 720 and the pressing plate 600 are completely overlapped.

[0048] It should be noted that the size of the membrane electrode 720 is adapted to the size of the bottom surface of the pressing plate 600 .

[0049] See also Figure 8 and Figure 10 The embodiment of the present disclosure also provides a battery stack material preassembly device, including: a work platform 800; a battery stack preassembly mechanism 900, which is arranged on the work platform 800 and is used for assembling the battery stack; two electrode assembly mechanisms as mentioned above, which are respectively arranged on both sides of the battery stack preassembly mechanism 900 and are respectively used to assemble cathode sheets and anode sheets; a robotic arm for transporting battery stack materials; a control module, which is configured to control the robotic arm to place the corresponding battery stack materials on the corresponding electrode assembly mechanisms in sequence, complete the assembly of the cathode sheets and the anode sheets, and alternately place the assembled cathode sheets and anode sheets on the battery stack preassembly mechanism 900 to complete the preassembly of the battery stack.

[0050] See also Figure 9 The present disclosure also provides a method for operating the stack material preassembly device as described above. The method includes: S110: The control module controls the robotic arm to place the corresponding electrode frame 710 and membrane electrode 720 to the corresponding electrode assembly mechanism; S120: The control module controls the corresponding electrode assembly mechanism to complete the assembly of the cathode and anode sheets; S130: The control module controls the robotic arm to alternately place the assembled cathode sheets and anode sheets on the stack pre-assembly mechanism 900; S140: The control module controls the stack pre-assembly mechanism 900 to complete the assembly of the stack materials.

[0051] In summary, the present invention discloses a pole piece assembly mechanism, a battery stack material preassembly device and a working method thereof, wherein the pole piece assembly mechanism assembly plate 100; a rotating arm 200, which is arranged above the assembly plate 100; a first lifting component 300, which is arranged on the rotating arm 200, and the end of the first lifting component 300 is connected to a pressing frame 500, and the pressing frame 500 is used to press the pole piece frame 710 onto the assembly plate 100; a second lifting component 400, which is arranged on the rotating arm 200, and the end of the second lifting component 400 is connected to a pressing plate 600, and the pressing plate 600 is used to press the membrane electrode 720 onto the assembly plate 100; wherein the pressing frame 500 is opened There is a square opening 510 adapted to the pressing plate 600; the side walls of the pressing plate 600 are embedded with elastic anti-stuck parts 610; when the pressing frame 500 is separated from the pressing plate 600, the elastic anti-stuck parts 610 extend from the side walls of the pressing plate 600 to adjust the horizontality of the electrode frame 710 that falls into the pressing plate 600 to avoid the electrode frame 710 being stuck with the side walls of the pressing plate 600; when the square opening 510 of the pressing frame 500 is sleeved on the pressing plate 600, the elastic anti-stuck parts 610 are squeezed to accommodate the elastic anti-stuck parts 610 into the side walls of the pressing plate 600, thereby pressing the electrode frame 710 onto the assembly plate 100 and cooperating with the membrane electrode 720 to complete the assembly. By arranging an elastic anti-stuck component 610 on the side wall of the pressing plate 600, when the pressing frame 500 is separated from the pressing plate 600, the elastic anti-stuck component 610 can automatically and dynamically adjust the horizontality of the pole piece frame 710 that falls into the pressing plate 600, effectively avoiding the problem of tilting and jamming of the pole piece frame 710; when the pressing frame 500 and the pressing plate 600 are pressed together, the elastic anti-stuck component 610 is compressed and retracted, which not only ensures the precise assembly of the pole piece frame 710 and the membrane electrode 720, but also prevents the pole piece damage caused by rigid contact through elastic buffering, thereby significantly improving the assembly yield of the battery stack pole piece.

[0052] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated herein. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0054] Spatially relative terms, such as "inside," "outside," "below," "beneath," "down," "above," "on," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as being "below" or "below" other elements or features will be oriented to be "above" the other elements or features. Thus, the example term "below" may encompass both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0055] In the above discussion, unless otherwise indicated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0056] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A pole piece assembly mechanism, characterized in that: include: Assemble Plate (100); a rotating arm (200) disposed above the assembly plate (100); A first lifting assembly (300) is provided on the rotating arm (200), and a pressing frame (500) is connected to the end of the first lifting assembly (300), and the pressing frame (500) is used to press the pole piece frame (710) onto the assembly plate (100); a second lifting assembly (400) disposed on the rotating arm (200), wherein a pressing plate (600) is connected to the end of the second lifting assembly (400), and the pressing plate (600) is used to press the membrane electrode (720) onto the assembly plate (100); The pressing frame (500) is provided with a square opening (510) adapted to the pressing plate (600); Elastic anti-stuck parts (610) are embedded in the side walls of the pressing plate (600); When the pressing frame (500) is separated from the pressing plate (600), the elastic anti-stuck member (610) extends from the side wall of the pressing plate (600) to form a horizontal support for the inner edge of the pole piece frame (710) that falls into the pressing plate (600); When the square opening (510) of the pressing frame (500) is sleeved on the pressing plate (600), the elastic anti-stuck component (610) is squeezed to accommodate the elastic anti-stuck component (610) into the side wall of the pressing plate (600), thereby pressing the electrode frame (710) onto the assembly plate (100) and cooperating with the membrane electrode (720) to complete the assembly.

2. The pole piece assembly mechanism according to claim 1, wherein: The side wall of the pressing plate (600) comprises an inclined guide surface (650) and a vertical butt joint surface (660); The inclined guide surface (650) is arranged above the vertical docking surface (660), and the four inclined guide surfaces (650) of the pressing plate (600) are arranged in a closed shape from bottom to top.

3. The pole piece assembly mechanism according to claim 2, wherein: The vertical docking surface (660) is provided with a receiving groove (640); The elastic anti-stuck component (610) is elastically connected to the accommodating groove (640) via a return spring (620).

4. The pole piece assembly mechanism according to claim 3, characterized in that: The protruding end of the elastic anti-stuck component (610) is provided with an adjustment surface (611) and a vertical guide surface (612); Furthermore, the adjustment surface (611) is arranged above the vertical guide surface (612); Wherein, the inclination direction of the adjustment surface (611) is consistent with the inclination direction of the inclined guide surface (650); When the pressing frame (500) is separated from the pressing plate (600), the return spring (620) returns to a natural state, at which time a portion of the adjustment surface (611) extends from the receiving groove (640), and the adjustment surface (611) is used to adjust the horizontality of the pole piece frame (710) that falls into the pressing plate (600); When the square opening (510) of the pressing frame (500) is sleeved on the pressing plate (600), the pole piece frame (710) is driven to move downward, and at the same time, the adjustment surface (611) is squeezed to complete the adjustment of the horizontality of the pole piece frame (710). After the elastic anti-stuck component (610) is accommodated in the side wall of the pressing plate (600), the pole piece frame (710) falls vertically along the vertical docking surface (660) and cooperates with the membrane electrode (720) under the pressing of the pressing frame (500) to complete the assembly.

5. The pole piece assembly mechanism according to claim 4, characterized in that: The inclined guide surface (650) has an inclination angle of α; The inclination angle of the adjustment surface (611) is β; The range of α is between 60° and 80°, and the range of β is between 20° and 40°.

6. The pole piece assembly mechanism according to claim 3, characterized in that: The bottom surface of the pressing plate (600) is provided with an air suction hole (630); The air suction hole (630) is in communication with the accommodating groove (640); When the elastic anti-stuck component (610) extends from the accommodating groove (640), the membrane electrode (720) is adsorbed on the bottom surface of the pressing plate (600) through the suction hole (630), thereby preventing the pressing plate (600) from being misaligned with the membrane electrode (720) when the pressing plate (600) deviates.

7. The pole piece assembly mechanism according to claim 1, wherein: The first lifting assembly (300) comprises: A first cylinder (310) and a second cylinder (320); The first cylinder (310) and the second cylinder (320) are arranged opposite to each other and are both connected to the rotating arm (200); The ends of the piston rods of the first cylinder (310) and the second cylinder (320) are fixedly connected to the pressing frame (500); The second lifting assembly (400) comprises: a third cylinder (410) and a gripping head (420); The third cylinder (410) is connected to the rotating arm (200); Furthermore, the grabbing head (420) is fixedly arranged on the piston rod of the third cylinder (410) and is used to grab the pressing frame (500).

8. The pole piece assembly mechanism according to claim 1, wherein: A first regulating cylinder and a second regulating cylinder (120) are respectively provided on two adjacent side walls of the assembly plate (100); A pusher plate is provided on the piston rods of the first regulating cylinder and the second regulating cylinder (120); Furthermore, the first regulating cylinder and the second regulating cylinder (120) are used to regulate the position of the membrane electrode (720) placed on the assembly plate (100) by the external robotic arm, so that the center point of the membrane electrode (720) coincides with the center point of the assembly plate (100).

9. A stack material preassembly device, characterized in that: include: Work platform (800); A battery stack pre-assembly mechanism (900), which is arranged on the working platform (800) and is used for assembling the battery stack; Two pole piece assembly mechanisms according to claim 1, which are respectively arranged on both sides of the battery stack pre-assembly mechanism (900) and are used to assemble cathode pieces and anode pieces respectively; A robotic arm used to transport battery stack materials; The control module is configured to control the robotic arm to place the corresponding battery stack materials in sequence on the corresponding electrode assembly mechanisms to complete the assembly of cathode sheets and anode sheets, and to alternately place the assembled cathode sheets and anode sheets on the battery stack pre-assembly mechanism (900) to complete the pre-assembly of the battery stack.

10. A working method applied to the battery stack material preassembly device according to claim 9, characterized in that: The working methods include: The control module controls the mechanical arm to place the corresponding electrode frame (710) and the membrane electrode (720) on the corresponding electrode assembly mechanism; The control module controls the corresponding electrode assembly mechanism to complete the assembly of the cathode and anode sheets; The control module controls the robotic arm to alternately place the assembled cathode sheets and anode sheets on the battery stack pre-assembly mechanism (900); The control module controls the battery stack pre-assembly mechanism (900) to complete the assembly of the battery stack materials.

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