Battery pole piece forming device and forming method

Abstract

The present invention discloses a battery pole piece forming device and a forming method, belonging to the technical field of battery pole piece production equipment. The battery pole piece forming device includes a conveying mechanism, a feeding mechanism and a rolling mechanism for conveying a substrate. The rolling mechanism includes a first pressing roller, a second pressing roller and a third pressing roller arranged side by side. The substrate is vertically arranged between the second pressing roller and the third pressing roller. The first pressing roller and the second pressing roller can roll the active material particles conveyed by the feeding mechanism to form a membrane, and the second pressing roller and the third pressing roller can roll the membrane onto the substrate. The first pressing roller and the second pressing roller jointly roll the active particulate material to form a membrane, and the second pressing roller and the third pressing roller can roll the membrane onto the substrate. Compared with the prior art, the thickness of the roll-formed membrane can be uniform, so that the thickness of the formed battery pole piece is uniform, and the powder falling when the battery pole piece expands is avoided, so as to ensure the normal operation of the lithium-ion battery.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pole piece production equipment, and in particular to a battery pole piece forming equipment and a forming method. Background Art

[0002] Lithium-ion batteries have high energy density and have been used in fields such as mobile phones and notebook computers. However, as their uses expand and develop, they are required to further improve their performance, such as lower resistance and higher capacity.

[0003] Lithium-ion battery electrodes can be obtained in the form of battery pole sheets. For example, in order to manufacture rolled sheets such as battery pole sheets from powders containing electrode active materials, powder compression molding using a powder calendering device has been carried out. In the powder calendering device, the powder is compressed and molded on a substrate with a roller to obtain a battery pole sheet, which easily makes the thickness of the powder in different areas on the substrate different. This makes it easy for the powder to fall off the substrate due to different expansion conditions in different areas of the battery pole sheet during the later working process, affecting the normal operation of the subsequent lithium-ion battery. Summary of the invention

[0004] The purpose of the present invention is to provide a battery pole piece forming device and a forming method to solve the problem in the prior art that the battery pole piece is obtained by compressing powder on a substrate with a roller, which easily leads to different powder thicknesses in different areas on the substrate of the battery pole piece, thus affecting the normal operation of the subsequent lithium-ion battery.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] A battery pole piece forming device comprises a conveying mechanism, a feeding mechanism and a rolling mechanism for conveying a substrate, the rolling mechanism comprises a first pressing roller, a second pressing roller and a third pressing roller arranged side by side, the substrate is vertically passed between the second pressing roller and the third pressing roller, the first pressing roller and the second pressing roller can roll the active material particles conveyed by the feeding mechanism to form a membrane, and the second pressing roller and the third pressing roller can roll the membrane onto the substrate.

[0007] Further, the temperature of the first pressing roller is greater than the temperature of the second pressing roller, and the temperature of the third pressing roller is the same as the temperature of the second pressing roller.

[0008] Furthermore, the battery pole piece forming equipment also includes a first driving mechanism and a first mounting assembly, the first pressing roller and the second pressing roller are both mounted on the first mounting assembly, and the first driving mechanism can drive the first pressing roller and / or the second pressing roller to move the first pressing roller and the second pressing roller closer to or farther away from each other.

[0009] Furthermore, the first mounting assembly includes two oppositely arranged first mounting structures and two oppositely arranged second mounting structures, the first pressure roller is installed between the two first mounting structures, and the second pressure roller is installed between the two second mounting structures; the first driving mechanism includes two first driving structures, and the two first driving structures can respectively drive the two first mounting structures to move toward or away from the second pressure roller.

[0010] Furthermore, the battery pole piece forming equipment also includes a second driving mechanism and a second mounting assembly, the third pressing roller is mounted on the second mounting assembly, and the second driving mechanism can drive the second mounting assembly to move toward or away from the second pressing roller.

[0011] Furthermore, the second mounting assembly includes two relatively arranged third mounting structures, and the third pressure roller is installed between the two third mounting structures; the second driving mechanism includes two second driving structures, and the two second driving structures can respectively drive the two third mounting structures to move towards or away from the second pressure roller.

[0012] Furthermore, each of the second mounting structures has two first cantilevers disposed vertically on a side facing the corresponding first mounting structure, and the first mounting structure is slidably disposed between the corresponding two first cantilevers;

[0013] Each of the second mounting structures has two second cantilevers disposed up and down on one side facing the corresponding third mounting structure, and the third mounting structure is slidably disposed between the corresponding two second cantilevers.

[0014] Furthermore, the conveying mechanism includes a first support member and a second support member, the first support member can support the substrate coil, the second support member is provided with a winding roller, and the winding roller can drive the substrate to pass vertically between the second pressure roller and the third pressure roller.

[0015] Furthermore, the conveying mechanism also includes a first support roller and a second support roller respectively located on the upper and lower sides of the second pressure roller, the position of the first support roller is adjustable in the arrangement direction of the three pressure rollers, and the position of the second support roller is adjustable in the vertical direction, the substrate passes through the second support roller and the first support roller successively, and the part of the substrate located between the first support roller and the second support roller is vertically located between the second pressure roller and the third pressure roller.

[0016] To achieve the above object, the present invention further provides a battery pole piece forming method, which is applicable to the battery pole piece forming equipment in any of the above schemes, and the battery pole piece forming method comprises the following steps:

[0017] S1, rolling the active material particles to form a membrane;

[0018] S2. Roll the film onto the substrate

[0019] The beneficial effects of the present invention are:

[0020] The battery pole piece forming equipment and forming method provided by the present invention are characterized in that the battery pole piece forming equipment is provided with a first pressing roller, a second pressing roller and a third pressing roller, wherein the first pressing roller and the second pressing roller jointly press an active particulate material to form a membrane, and the second pressing roller and the third pressing roller can press the membrane onto a substrate. Compared with the prior art, the thickness of the roll-formed membrane can be made uniform, thereby making the thickness of the formed battery pole piece uniform, avoiding powder falling when the battery pole piece expands, and ensuring the normal operation of the lithium-ion battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the pole piece forming equipment provided by the present invention;

[0022] Figure 2 is a cross-sectional schematic diagram of a pole piece forming device provided by the present invention;

[0023] Figure 3 It is a schematic diagram of the partial structure of the pole piece forming equipment provided by the present invention.

[0024] In the figure:

[0025] 1. Conveying mechanism; 11. First supporting member; 12. Second supporting member; 13. First supporting roller; 14. Second supporting roller; 15. Third supporting roller; 16. Fourth supporting roller;

[0026] 2. Feeding mechanism;

[0027] 3. Rolling mechanism; 31. First pressing roller; 32. Second pressing roller; 33. Third pressing roller; 34. First gear; 35. Second gear; 36. Third gear;

[0028] 4. First mounting assembly; 41. First mounting structure; 42. Second mounting structure; 421. First cantilever; 422. Second cantilever; 43. First fixing member;

[0029] 5. Second mounting assembly; 51. Third mounting structure; 52. Second fixing member;

[0030] 6. First driving structure; 61. First rotating wheel; 62. First connecting rod;

[0031] 7. Second driving structure; 71. Second rotating wheel; 72. Second connecting rod;

[0032] 8. Support frame; 81. Horizontal support plate; 811. Extension plate; 8111. Second slide hole; 82. Vertical support plate; 821. First slide hole;

[0033] 10. Base material. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figures 1 to 3As shown, this embodiment provides a battery pole piece forming device, which includes a conveying mechanism 1, a feeding mechanism 2 and a rolling mechanism 3 for conveying a substrate 10. The rolling mechanism 3 includes a first pressing roller 31, a second pressing roller 32 and a third pressing roller 33 arranged side by side, and the substrate 10 is vertically arranged between the second pressing roller 32 and the third pressing roller 33. The first pressing roller 31 and the second pressing roller 32 can roll the active particulate material conveyed by the feeding mechanism 2 to form a membrane, and the second pressing roller 32 and the third pressing roller 33 can roll the membrane onto the substrate 10.

[0039] The first pressing roller 31 and the third pressing roller 33 have the same rotation direction, and the first pressing roller 31 and the second pressing roller 32 have opposite rotation directions. The membrane formed by rolling the first pressing roller 31 and the second pressing roller 32 is attached to the second pressing roller 32, and the membrane is rolled onto the substrate 10 by the second pressing roller 32. In this way, the rolling forming of the membrane and the rolling combination of the membrane and the electrode can be separated, so as to ensure that the thickness of the roll-formed membrane is uniform, so that the thickness of the formed battery electrode is uniform, and the powder falling when the battery electrode expands is avoided, so as to ensure the normal operation of the lithium-ion battery.

[0040] Further, in order to allow the film to be attached to the second pressing roller 32, the temperature of the first pressing roller 31 is greater than the temperature of the second pressing roller 32. Specifically, in this embodiment, the temperature of the first pressing roller 31 is 40°C-300°C, and the temperature of the second pressing roller 32 is room temperature. In addition, in this embodiment, the temperature of the third pressing roller 33 is the same as that of the second pressing roller 32. Specifically, the temperature of the third pressing roller 33 is room temperature.

[0041] like Figure 1 As shown, the feeding mechanism 2 includes a feeding hopper, the feeding port of which is located above the gap between the first pressing roller 31 and the second pressing roller 32, and the active material particles in the feeding hopper enter between the first pressing roller 31 and the second pressing roller 32 through the feeding port, and are formed into a membrane after being rolled by the first pressing roller 31 and the second pressing roller 32. In this embodiment, the feeding hopper is installed on the rolling mechanism 3.

[0042] like Figure 2 As shown, the conveying mechanism 1 includes a first support member 11 and a second support member 12. The first support member 11 can support the substrate coil. The second support member 12 is provided with a winding roller, which can drive the substrate 10 to pass vertically between the second pressing roller 32 and the third pressing roller 33. Further, the conveying mechanism 1 also includes a first support roller 13 and a second support roller 14 located at the upper and lower sides between the second pressing roller 32 and the third pressing roller 33, respectively. The substrate 10 passes through the second support roller 14 and the first support roller 13 in sequence, and a portion of the substrate 10 located between the first support roller 13 and the second support roller 14 is vertically located between the second pressing roller 32 and the third pressing roller 33, so that the second pressing roller 32 can roll the film onto the substrate 10.

[0043] Further, the conveying mechanism 1 further includes a third support roller 15 and a fourth support roller 16, at least one third support roller 15 and at least one fourth support roller 16 are provided between the first support member 11 and the rolling mechanism 3, and at least one third support roller 15 and at least one fourth support roller 16 are provided between the second support member 12 and the rolling mechanism 3. The substrate 10 can be supported and tensioned by the third support roller 15 and the fourth support roller 16. Specifically, in the present embodiment, a third support roller 15 and two fourth support rollers 16 are provided between the first support member 11 and the rolling mechanism 3, and the third support roller 15 is located between the two fourth support rollers 16 and below the two fourth support rollers 16 in the vertical direction. A third support roller 15 and two fourth support rollers 16 are provided between the second support member 12 and the rolling mechanism 3, and the third support roller 15 is located between the two fourth support rollers 16 and below the two fourth support rollers 16 in the vertical direction. It can be understood that in the present embodiment, the substrate 10 is wound below the two third support rollers 15.

[0044] In order to flexibly tension the substrate 10, in this embodiment, the position of the third support roller 15 in the vertical direction is adjustable. The substrate 10 can be more flexibly tensioned by adjusting the position of the third support roller 15 in the vertical direction. Of course, in other embodiments, the fourth support roller 16 can also be set to be adjustable in the vertical direction, and the substrate 10 can be tensioned by adjusting the position of the fourth support roller 16.

[0045] Refer again Figure 1 and Figure 2 The pole piece forming device further comprises a support frame 8, on which the conveying mechanism 1 and the rolling mechanism 3 are both arranged. Specifically, the support frame 8 comprises a horizontal support plate 81 and a vertical support plate 82 connected to each other, and the first support member 11, the second support member 12, the first support roller 13, the third support roller 15 and the fourth support roller 16 are all located on the vertical support plate 82. The second support roller 14 and the rolling mechanism 3 are located on the horizontal support plate 81.

[0046] Furthermore, in the present embodiment, a linear guide rail (not shown in the figure) extending in the vertical direction is provided on the vertical support plate 82 corresponding to each third support roller 15, and the third support roller 15 is slidably provided on the linear guide rail so as to be able to move in the vertical direction.

[0047] Further, the position of the first support roller 13 in the horizontal direction is adjustable, and the position of the second support roller 14 in the vertical direction is adjustable. By adjusting the position of the second support roller 14 in the vertical direction, the interference between the substrate 10 and the first pressure roller 31 can be avoided, and by adjusting the position of the first support roller 13 in the horizontal direction, the verticality of the part of the substrate 10 located between the first support roller 13 and the second support roller 14 can be adjusted. And adjusting the position of the first support roller 13 and the second support roller 14 can also adjust the tension of the substrate 10. Specifically, a first sliding hole 821 is opened in the horizontal direction on the vertical support plate 82, and the first support roller 13 is slidably set in the first sliding hole 821. The horizontal support plate 81 has an extension plate 811 extending in the vertical direction, and the extension plate 811 is opened with a second sliding hole 8111 extending in the vertical direction, and the second support roller 14 is slidably set in the second sliding hole 8111.

[0048] like Figure 1 and Figure 3 As shown, the battery pole piece forming equipment also includes a first driving mechanism and a first mounting assembly 4, the first pressing roller 31 and the second pressing roller 32 are both mounted on the first mounting assembly 4, and the first driving mechanism can drive the first pressing roller 31 and / or the second pressing roller 32 to make the first pressing roller 31 and the second pressing roller 32 approach or move away from each other.

[0049] Specifically, in this embodiment, the first mounting assembly 4 includes two first mounting structures 41 and two second mounting structures 42, the first pressing roller 31 can be rotatably mounted between the two first mounting structures 41, and the second pressing roller 32 can be rotatably mounted between the two second mounting structures 42. The first driving mechanism includes two first driving structures 6, and the two first driving structures 6 can respectively drive the two first mounting structures 41 to move toward or away from the second pressing roller 32. The above-mentioned feeding hopper is mounted on the two second mounting structures 42.

[0050] Further, in the present embodiment, each second mounting structure 42 has two first cantilevers 421 arranged vertically on one side facing the corresponding first mounting structure 41, and each first mounting structure 41 is slidably arranged between the corresponding two first cantilevers 421. The first mounting assembly 4 also includes two first fixing members 43, and the two first fixing members 43 are respectively connected to the first cantilevers 421 of the two second mounting structures 42. The above-mentioned first driving structure 6 includes a first rotating wheel 61 and a first connecting rod 62 connected to each other, and the first connecting rod 62 passes through the corresponding first fixing member 43 and is connected to the first mounting structure 41, and the first connecting rod 62 is threadedly connected to the first fixing member 43. By rotating the first rotating wheel 61, the corresponding first mounting structure 41 can be driven to slide relative to the second mounting structure 42, thereby realizing the adjustment of the distance between the first pressure roller 31 and the second pressure roller 32. In the present embodiment, the above-mentioned second mounting structure 42 is installed on the horizontal support plate 81.

[0051] Specifically, in the present embodiment, the first mounting structure 41 includes a first mounting block, and more preferably, the first mounting structure 41 includes one first mounting block, and the first pressure roller 31 is installed between two first mounting blocks. Of course, in other embodiments, the first mounting structure 41 may also include multiple first mounting blocks. In addition, in the present embodiment, the second mounting structure 42 includes a second mounting block, and more preferably, the second mounting structure 42 includes one second mounting block, and the second pressure roller 32 is installed between two second mounting blocks. Of course, in other embodiments, the second mounting structure 42 may also include multiple second mounting blocks.

[0052] Of course, in other embodiments, the first driving mechanism may also drive the second pressure roller 32 to move in a direction close to or away from the first pressure roller 31. Specifically, the first mounting assembly 4 includes two relatively arranged fourth mounting structures and two relatively arranged fifth mounting structures, wherein the first pressure roller 31 is installed between the two fourth mounting structures, and the second pressure roller 32 is installed between the two fifth mounting structures. The above-mentioned first driving mechanism includes two third driving structures, and the two third driving structures can respectively drive the two fifth mounting structures to move in a direction close to or away from the corresponding fourth mounting structure. The third driving structure can be a cylinder, a motor screw or other structures, which can realize the drive of the fifth mounting structure.

[0053] like Figure 1 and Figure 3 As shown, the battery pole piece forming device also includes a second driving mechanism and a second mounting assembly 5, the third pressing roller 33 is mounted on the second mounting assembly 5, and the second driving mechanism can drive the second mounting assembly 5 to move in a direction close to or away from the second pressing roller 32. Specifically, the second mounting assembly 5 includes two opposite third mounting structures 51, the third pressing roller 33 is mounted between the two third mounting structures 51, and the second driving mechanism includes two second driving structures 7, and the two second driving structures 7 can respectively drive the two third mounting structures 51 to move in a direction close to or away from the second pressing roller 32.

[0054] Further, in the present embodiment, each second mounting structure 42 has two second cantilevers 422 disposed vertically on one side facing the corresponding third mounting structure 51, and the third mounting structure 51 is slidably disposed between the corresponding two second cantilevers 422. The second mounting assembly 5 also includes two second fixing members 52, and the two second fixing members 52 are respectively connected to the second cantilevers 422 of the two second mounting structures 42. The above-mentioned second driving structure 7 includes a second rotating wheel 71 and a second connecting rod 72 connected to each other, the second connecting rod 72 passes through the corresponding second fixing member 52 and is connected to the third mounting structure 51, and the second connecting rod 72 is threadedly connected to the second fixing member 52. By rotating the second rotating wheel 71, the corresponding third mounting structure 51 can be driven to slide relative to the second mounting structure 42, thereby adjusting the distance between the second pressure roller 32 and the third pressure roller 33.

[0055] Specifically, in this embodiment, the third mounting structure 51 includes a third mounting block, and further preferably, the third mounting structure 51 includes one third mounting block, and the third pressing roller 33 is installed between two third mounting blocks. Of course, in other embodiments, the third mounting structure 51 may also include multiple third mounting blocks.

[0056] Refer again Figure 1 In order to improve the consistency of the rotation of the first pressing roller 31, the second pressing roller 32 and the third pressing roller 33, one end of the first pressing roller 31 is connected to the first gear 34, one end of the second pressing roller 32 is connected to the second gear 35, and one end of the third pressing roller 33 is connected to the third gear 36. The first gear 34 is meshed with the second gear 35, and the second gear 35 is meshed with the third gear 36.

[0057] In summary, the battery pole piece forming equipment provided in this embodiment, by setting a first pressing roller 31, a second pressing roller 32 and a third pressing roller 33, the first pressing roller 31 and the second pressing roller 32 jointly press the active particulate material to form a membrane, and the second pressing roller 32 can roll the membrane onto the substrate 10. Compared with the prior art, the thickness of the roll-formed membrane can be uniform, so that the thickness of the formed battery pole piece is uniform, avoiding powder falling when the battery pole piece expands, and ensuring the normal operation of the lithium-ion battery.

[0058] This embodiment also provides a battery pole piece forming method, which includes the following steps:

[0059] S1: Rolling the active material particles to form a film;

[0060] S2: rolling the film onto the substrate.

[0061] It can be understood that in this embodiment, the rolling of the active material and the forming of the battery pole piece are carried out in steps. First, the active material particles are rolled by the first pressing roller 31 and the second pressing roller 32 to form a membrane, and then the membrane is rolled onto the substrate 10 by the second pressing roller 32. This can improve the consistency of the thickness of the membrane, thereby ensuring that the thickness of the formed battery pole piece is uniform, avoiding the situation where the active material falls off and causes a short circuit during the subsequent operation of the lithium-ion battery, and improving the safety performance of the lithium-ion battery.

[0062] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A battery pole piece forming device, characterized in that: The invention comprises a conveying mechanism (1), a feeding mechanism (2) and a rolling mechanism (3) for conveying a substrate (10); the rolling mechanism (3) comprises a first pressing roller (31), a second pressing roller (32) and a third pressing roller (33) arranged side by side; the substrate (10) is arranged between the second pressing roller (32) and the third pressing roller (33) in a vertical direction; the first pressing roller (31) and the second pressing roller (32) can roll the active material particles conveyed by the feeding mechanism (2) to form a membrane; and the second pressing roller (32) and the third pressing roller (33) can roll the membrane onto the substrate (10); The temperature of the first pressing roller (31) is greater than the temperature of the second pressing roller (32), and the temperature of the third pressing roller (33) is the same as the temperature of the second pressing roller (32); The battery pole piece forming device further comprises a first driving mechanism and a first mounting assembly (4), the first pressing roller (31) and the second pressing roller (32) are both mounted on the first mounting assembly (4), and the first driving mechanism is capable of driving the first pressing roller (31) and / or the second pressing roller (32) to move the first pressing roller (31) and the second pressing roller (32) closer to or farther away from each other; The first mounting assembly (4) comprises two first mounting structures (41) arranged opposite to each other and two second mounting structures (42) arranged opposite to each other, the first pressing roller (31) is mounted between the two first mounting structures (41), and the second pressing roller (32) is mounted between the two second mounting structures (42); the first driving mechanism comprises two first driving structures (6), and the two first driving structures (6) can respectively drive the two first mounting structures (41) to move in a direction close to or away from the second pressing roller (32); The battery pole piece forming device further comprises a second driving mechanism and a second mounting assembly (5), the third pressing roller (33) being mounted on the second mounting assembly (5), and the second driving mechanism being capable of driving the second mounting assembly (5) to move in a direction close to or away from the second pressing roller (32); The second mounting assembly (5) comprises two third mounting structures (51) arranged opposite to each other, and the third pressing roller (33) is mounted between the two third mounting structures (51); the second driving mechanism comprises two second driving structures (7), and the two second driving structures (7) can respectively drive the two third mounting structures (51) to move in a direction close to or away from the second pressing roller (32); The conveying mechanism (1) comprises a first support member (11) and a second support member (12), wherein the first support member (11) is capable of supporting a coiled substrate, and the second support member (12) is provided with a winding roller, wherein the winding roller is capable of driving the substrate (10) to pass vertically between the second pressing roller (32) and the third pressing roller (33); The conveying mechanism (1) further comprises a first support roller (13) and a second support roller (14) respectively located on the upper and lower sides of the second pressure roller (32); the position of the first support roller (13) is adjustable in the arrangement direction of the three pressure rollers; the position of the second support roller (14) is adjustable in the vertical direction; the substrate (10) passes through the second support roller (14) and the first support roller (13) in sequence; and a portion of the substrate (10) located between the first support roller (13) and the second support roller (14) is vertically located between the second pressure roller (32) and the third pressure roller (33).

2. The battery pole piece forming equipment according to claim 1, characterized in that: Each second mounting structure (42) has two first cantilevers (421) disposed vertically on a side facing the corresponding first mounting structure (41), and the first mounting structure (41) is slidably disposed between the corresponding two first cantilevers (421); Each second mounting structure (42) has two second cantilevers (422) disposed vertically on a side facing the corresponding third mounting structure (51), and the third mounting structure (51) is slidably disposed between the corresponding two second cantilevers (422).

3. A battery pole piece forming method, characterized in that: Applicable to the battery pole piece forming equipment according to any one of claims 1 to 2, the battery pole piece forming method comprises the following steps: S1, rolling the active material particles to form a membrane; S2. Roll the film onto the substrate.

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