Pole piece compounding device and battery cell production equipment

Abstract

The utility model discloses a pole piece compounding device and battery cell production equipment, the pole piece compounding device is used for compounding a pole piece between an upper film and a lower film, the pole piece compounding device comprises a hot-pressing mechanism, the hot-pressing mechanism comprises an upper hot-pressing assembly and a lower hot-pressing assembly, and the space between the upper hot-pressing assembly and the lower hot-pressing assembly can allow the pole piece, the upper film and the lower film to pass through, the upper hot-pressing assembly and the lower hot-pressing assembly are heated through vertical clamping; the front rolling assembly is arranged on the incoming material side of the hot pressing mechanism and comprises a front supporting roller and a front pressing roller; the rear rolling assembly is arranged on the discharging side of the hot pressing mechanism and comprises a rear supporting roller and a rear pressing roller; the front rolling assembly and the rear rolling assembly vertically clamp the upper film and the lower film, so that the upper film and the lower film are vertically and flatly attached, and then the hot-pressing mechanism performs hot-pressing compounding to form a battery cell. According to the pole piece compounding device and the battery cell production equipment, the contact area can be increased, the hot pressing effect is improved, the battery cell is prevented from being damaged, and the compounding quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for producing battery cells, and in particular to an electrode composite device and battery cell production equipment. Background Technology

[0002] During the production of battery cells, a separator is laminated to each side of the electrode, so that the electrode is located between the two separators.

[0003] For single or single-segment electrode sheets, during manufacturing, the electrode sheet is first rolled with a layer of diaphragm, and then the electrode sheet and diaphragm are rolled with another diaphragm.

[0004] For electrode sheets in strip form, during manufacturing, they can be laminated in the manner described above, or the lamination can be completed by simultaneously rolling the electrode sheet and two layers of separator.

[0005] During the lamination process, the rollers used for pressing are heated, that is, hot pressing rollers are used to achieve hot pressing lamination.

[0006] However, the hot pressing roller method has a small contact area, poor hot pressing effect, and the product is easily damaged. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electrode composite device that can increase the contact area, improve the hot-pressing effect, prevent cell damage, and improve the composite quality.

[0008] This utility model also proposes a battery cell production equipment having the above-mentioned electrode composite device.

[0009] According to a first aspect of the present invention, an electrode composite device is used to composite the electrode between an upper film and a lower film, the electrode composite device comprising:

[0010] The hot pressing mechanism includes an upper hot pressing assembly and a lower hot pressing assembly. The space between the upper hot pressing assembly and the lower hot pressing assembly allows the electrode, the upper film, and the lower film to pass through. The upper hot pressing assembly and the lower hot pressing assembly are heated by clamping them together.

[0011] The front roller pressing assembly is located on the material receiving side of the hot pressing mechanism and includes a front support roller and a front pressure roller.

[0012] The rear roller pressing assembly is located on the discharge side of the hot pressing mechanism and includes a rear support roller and a rear pressure roller.

[0013] The front and rear roller pressing assemblies clamp the upper and lower films to make them flat and evenly bonded. Then, the hot pressing mechanism performs hot pressing to form a battery cell.

[0014] The electrode composite device according to the embodiments of the present invention has at least the following beneficial effects:

[0015] By setting up a front roller pressing assembly and a rear roller pressing assembly, this utility model allows the upper and lower films to be bonded together on a larger area platform, which facilitates the hot pressing mechanism to use hot pressing methods other than roller pressing, thus helping to increase the contact area and improve the hot pressing effect.

[0016] This invention incorporates a hot-pressing mechanism, which includes an upper hot-pressing component and a lower hot-pressing component. This facilitates the use of two pressure plates to press the upper film, lower film, and electrode sheet from top to bottom, increasing the contact area and improving the hot-pressing effect.

[0017] Meanwhile, this utility model uses an integral clamping electrode sheet, which makes the electrode sheet subjected to balanced force and less prone to damage.

[0018] Meanwhile, this invention can simultaneously laminate the upper film, lower film, and electrode, eliminating the need for two lamination processes, thus simplifying the process, reducing the number of equipment, lowering manufacturing costs, and reducing space requirements.

[0019] Meanwhile, by setting up a front roller pressing assembly and a rear roller pressing assembly, the present invention can keep the upper and lower films restricted after hot pressing, preventing them from being lifted by the hot pressing mechanism. For example, when the upper hot pressing assembly is far away from the upper film, the front roller pressing assembly and the rear roller pressing assembly can restrict the upper film and prevent the upper film from separating from the lower film or the electrode sheet.

[0020] At the same time, it can also prevent the upper and lower films from separating due to the pulling of the material belt during the delivery of battery cells, thus improving the composite quality.

[0021] This utility model also provides a battery cell production equipment, which has the above-mentioned beneficial effects.

[0022] According to the electrode composite device of the first aspect of the present invention, the front pressure roller is capable of rising and falling. When the front pressure roller rises to its highest point, a first gap can be formed between the upper film and the lower film at the hot pressing mechanism. The first gap allows the electrode to be placed on the lower film. When the front pressure roller falls to its lowest point, the upper film and the lower film can be flatly attached.

[0023] The advantage of this invention is that by raising and lowering the front pressure roller, a first gap is formed between the upper and lower films after the front pressure roller rises, which facilitates the placement of the electrode sheet on the upper film. As a result, the electrode sheet composite device can also be used for composite of single or single-segment electrode sheets, and only one composite process is still required, thus expanding the functionality of the equipment.

[0024] According to a first aspect of the present invention, the electrode composite device includes an electrode transfer member for adsorbing the electrode, the electrode transfer member being movable to the first gap and placing the electrode on the lower membrane.

[0025] The advantage is that this invention, by setting up an electrode transfer component, can adsorb and transfer the electrode to the lower film, thus meeting the needs of one-time lamination.

[0026] According to the electrode composite device of the first aspect of the present invention, the electrode transfer member moves along the conveying direction of the lower film to the first gap.

[0027] The advantages of this invention are: by moving the electrode transfer member along the conveying direction of the lower film, it is also convenient for the electrode transfer member to lift the upper film, reducing the probability of damage to the upper film. At the same time, the electrode can be transferred to a position close to the rear roller pressing assembly, thereby allowing more electrode to be placed on the upper film and improving hot pressing output.

[0028] According to a first aspect of the present invention, in the electrode composite apparatus, the electrode transfer member is provided with a lifting roller, which is used to abut against the upper film to separate the upper film from the electrode transfer member.

[0029] The advantage of this invention is that by setting up a lifting roller, the electrode transfer component contacts the upper film through the lifting roller. During the transfer of the electrode, the lifting roller rotates, reducing friction on the upper film and preventing damage to the upper film.

[0030] According to the electrode composite device of the first aspect of the present invention, the upper hot pressing assembly includes an upper hot pressing plate, the lower hot pressing assembly includes a lower hot pressing plate, and the upper hot pressing plate and / or the lower hot pressing plate are provided with elastic pressing blocks, the elastic pressing blocks being arranged to protrude toward the electrode.

[0031] The advantage of this invention is that by setting up an elastic pressure block, the upper or lower hot pressure plate is avoided from pressing the electrode sheet hard, thus preventing damage to the electrode sheet.

[0032] According to the electrode composite device of the first aspect of the present invention, the elastic pressing block is disposed close to the rear roller pressing assembly and the elastic pressing block is disposed away from the front roller pressing assembly.

[0033] The advantages are: by optimizing the position of the elastic pressure block, this utility model not only meets the need for elastic pressing of the electrode sheet, but also avoids the elastic pressure block protruding downward and touching the upper film in the conveying state, thus reducing the risk of damage to the upper film.

[0034] According to the electrode composite apparatus of the first aspect of the present invention, the upper hot pressing assembly includes an upper hot pressing plate, and the lower point of the front pressure roller and / or the rear pressure roller is lower than the upper hot pressing plate, so as to separate the upper hot pressing plate from the upper film.

[0035] Advantages: By positioning the lowest point of the front and / or rear pressure rollers below the upper hot press plate, this invention also separates the upper hot press plate from the upper film, thus not affecting the movement of the upper film and preventing the upper hot press plate from prolonged contact and heating of the upper film, avoiding heat deformation or shrinkage of the upper film and affecting its accuracy. According to the electrode composite device of a first aspect of this invention, the lower hot press assembly includes a lower hot press plate having an adsorption surface for adsorbing the lower film and the electrode.

[0036] The advantages are: by giving the lower hot plate an adsorption surface, this utility model also facilitates the fixing of the lower film and the electrode, prevents the electrode from moving around freely, and ensures the composite quality.

[0037] According to a first aspect embodiment of the present invention, the electrode composite device includes a dust removal component for removing dust between the upper hot pressing component and the lower hot pressing component. The dust removal component includes a dust blowing component and a dust suction component, which are located on the left and right sides of the lower film conveying direction.

[0038] The advantages of this invention are: by setting up a dust removal component, the dust removal component includes a dust blowing component and a dust suction component. Therefore, the dust is blown up by the dust blowing component and the dust is sucked away by the dust suction component, thus avoiding dust pollution on site. At the same time, it enables dust that is far away from the dust blowing component and the dust suction component to be carried away, reducing the difficulty of arranging the dust blowing component and the dust suction component, and also making it convenient to remove dust located in the middle or center of the hot pressing mechanism.

[0039] According to the electrode composite apparatus of a first aspect of the present invention, the lower hot pressing assembly includes a lower hot pressing plate, and the apex of the front support roller and / or the rear support roller is higher than the lower hot pressing plate, so as to separate the lower film from the lower hot pressing plate.

[0040] The advantages of this invention are: by making the apex of the front support roller and / or the rear support roller higher than the lower hot press plate, the lower film can be separated from the lower hot press plate without affecting the movement of the lower film, avoiding prolonged contact and heating of the lower film by the lower hot press plate, avoiding heat deformation or shrinkage of the upper film, and avoiding deformation of the lower film that would affect accuracy.

[0041] According to the electrode composite device of the first aspect of the present invention, the front support roller and / or the rear support roller elastically support the lower film.

[0042] The advantages of this invention are that by having the front support roller and / or the rear support roller elastically support the lower film, on the one hand, the requirement of separating the lower film from the lower hot platen can be met; on the other hand, when the front pressure roller and the rear pressure roller press down, the front support roller and the rear support roller can descend, so that the lower film comes into contact with the lower hot platen, thus meeting the composite requirements.

[0043] The battery cell production equipment according to a second aspect of the present invention includes the electrode composite device described in any one of the above claims.

[0044] The advantages are: by applying the above-mentioned electrode composite device, this utility model can increase the contact area during hot pressing, improve the hot pressing effect, and at the same time, make the overall force on the electrode balanced, so that the electrode is not easily damaged.

[0045] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the electrode composite device according to an embodiment of the present invention;

[0048] Figure 2 for Figure 1 Cross-sectional schematic diagram of the electrode composite device;

[0049] Figure 3 for Figure 1 A schematic diagram of the electrode composite device.

[0050] Reference numerals: Upper hot pressing assembly 100; Lower hot pressing assembly 110; Front support roller 120; Front pressure roller 130; Rear support roller 140; Rear pressure roller 150; First gap 160; Electrode transfer component 170; Lifting roller 180; Lower hot pressing plate 190; Adsorption surface 200; Upper hot pressing plate 210; Elastic pressing block 220. Detailed Implementation

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0052] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] The electrode composite device and battery cell production equipment according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0056] Reference Figures 1 to 3 The present invention aims to provide an embodiment of an electrode composite device, which can be part of a battery cell production equipment. Therefore, the present invention also aims to provide an embodiment of a battery cell production equipment, which includes an electrode composite device.

[0057] Compared with the prior art, the electrode composite device of this utility model can increase the contact area, improve the hot pressing effect, prevent the battery cell from being damaged, and improve the composite quality.

[0058] Meanwhile, the battery cell production equipment of this utility model can also produce the same technical effects by applying the above-mentioned electrode composite device, such as increasing the contact area during hot pressing, improving the hot pressing effect, and making the electrode sheet as a whole more evenly stressed, so that the electrode sheet is less likely to be damaged, thereby improving the production quality of the battery cell.

[0059] In this embodiment, the electrode composite device is used to composite the electrode between the upper and lower films.

[0060] The electrode can be in the form of a strip, or it can be a single or segmented electrode.

[0061] For electrode sheets in strip form, the electrode sheet composite device may include an electrode sheet feeding mechanism, which unwinds the electrode sheets in the strip state to achieve continuous supply of electrode sheets.

[0062] For single or segmented electrodes, the electrode feeding mechanism may include an electrode transfer member 170. The electrode transfer member 170 picks up the electrode by clamping, adsorption, or other means, and places the electrode on the lower film by lifting and translating to meet the electrode supply needs.

[0063] For the upper film, the electrode composite device may include an upper film feeding mechanism, which unwinds the upper film in the roll state to achieve continuous supply of the upper film.

[0064] For the lower film, the electrode composite device may include a lower film feeding mechanism, which unwinds the lower film in the roll state to achieve continuous supply of the lower film.

[0065] The upper membrane feeding mechanism and the lower membrane feeding mechanism can be understood by referring to the existing diaphragm supply scheme.

[0066] In some specific embodiments of this utility model, the upper film feeding mechanism, the electrode feeding mechanism, and the lower film feeding mechanism can be arranged vertically to reduce the floor space required.

[0067] To complete the composite process, the electrode composite device includes a hot pressing mechanism, a front rolling assembly, and a rear rolling assembly.

[0068] The hot pressing mechanism includes an upper hot pressing assembly 100 and a lower hot pressing assembly 110. The space between the upper hot pressing assembly 100 and the lower hot pressing assembly 110 allows the electrode, the upper film and the lower film to pass through. The upper hot pressing assembly 100 and the lower hot pressing assembly 110 are heated by clamping each other from above and below.

[0069] In terms of movement, this embodiment uses the upper hot pressing component 100 to lift and lower to complete the hot pressing, but the lower hot pressing component 110 can also be used to lift and lower to complete the hot pressing, or the upper hot pressing component 100 and the lower hot pressing component 110 can be lifted and lowered simultaneously to bring them closer to each other for hot pressing.

[0070] In some specific embodiments of this utility model, the lifting structure of the upper hot pressing assembly 100 or the lower hot pressing assembly 110 can be achieved by a motor driving a screw to rotate, and the screw driving an upper and lower sliding member with internal threads.

[0071] In some specific embodiments of this utility model, the upper hot pressing assembly 100 may include an upper hot pressing plate 210, and the lower hot pressing assembly 110 may include a lower hot pressing plate 190. The upper hot pressing plate 210 and / or the lower hot pressing plate 190 may be provided with an elastic pressing block 220, which protrudes toward the electrode sheet.

[0072] It is easy to understand that this embodiment avoids the upper hot plate 210 or the lower hot plate 190 from pressing the electrode sheet hard by setting the elastic pressure block 220, thus avoiding damage to the electrode sheet.

[0073] It is easy to understand that in this embodiment, the elastic pressure block 220 is set close to the rear roller pressing assembly, and the elastic pressure block 220 is set away from the front roller pressing assembly.

[0074] It is easy to understand that this embodiment optimizes the position of the elastic pressure block 220 to both meet the need for elastic pressing of the electrode sheet and prevent the elastic pressure block 220 from protruding downward and touching the upper film in the conveying state, thereby reducing the risk of damage to the upper film.

[0075] For the upper hot press plate 210 and / or the lower hot press plate 190, an elastic pressure block 220 may be provided, so that at least one of the upper hot press plate 210 and the lower hot press plate 190 is provided with an elastic pressure block 220.

[0076] In this embodiment, the upper hot plate 210 is provided with an elastic pressure block 220 to adapt to the downward hot pressing movement of the upper hot plate 210.

[0077] The front roller pressing assembly is located on the material feeding side of the hot pressing mechanism. The front roller pressing assembly includes a front support roller 120 and a front pressure roller 130.

[0078] The rear roller pressing assembly is located on the discharge side of the hot pressing mechanism. The rear roller pressing assembly includes a rear support roller 140 and a rear pressure roller 150.

[0079] The front and rear roller pressing assemblies clamp the upper and lower films to make them flat and even. Then, the hot pressing mechanism performs hot pressing to form a battery cell.

[0080] In this embodiment, the upper and lower films are clamped by the front and rear roller pressing assemblies, which is accomplished by the descent of the front pressure roller 130 and the rear pressure roller 150. However, in combination with the movement of the upper hot pressing assembly 100 and the lower hot pressing assembly 110, this can also be accomplished by the front support roller 120 and the rear support roller 140.

[0081] In some specific embodiments of this utility model, the front pressure roller 130 and the rear pressure roller 150 can be lifted and lowered by a cylinder, and the operation is fast.

[0082] In summary, by setting up a front roller pressing assembly and a rear roller pressing assembly, this embodiment allows the upper and lower films to be bonded together on a larger area platform, which facilitates the hot pressing mechanism to use hot pressing methods other than roller pressing, thereby increasing the contact area and improving the hot pressing effect.

[0083] In this embodiment, by setting up a hot pressing mechanism, the hot pressing mechanism includes an upper hot pressing component 100 and a lower hot pressing component 110. Therefore, it is also convenient to use two pressure plates to press the upper film, lower film and electrode sheet from top to bottom, thereby increasing the contact area and improving the hot pressing effect.

[0084] Meanwhile, this embodiment uses integral clamping of the electrode sheet, which ensures that the electrode sheet is subjected to balanced force and is less prone to damage.

[0085] Meanwhile, this embodiment can simultaneously laminate the upper film, lower film, and electrode, eliminating the need for two lamination processes. This simplifies the process, reduces the number of equipment, lowers manufacturing costs, and reduces space requirements.

[0086] Meanwhile, by setting up a front roller pressing assembly and a rear roller pressing assembly in this embodiment, the front roller pressing assembly and the rear roller pressing assembly can keep the upper and lower films restricted after hot pressing, and prevent them from being lifted by the hot pressing mechanism. For example, when the upper hot pressing assembly 100 is away from the upper film, the front roller pressing assembly and the rear roller pressing assembly can restrict the upper film and prevent the upper film from separating from the lower film or the electrode sheet.

[0087] At the same time, it can also prevent the upper and lower films from separating due to the pulling of the material belt during the delivery of battery cells, thus ensuring the quality of the composite.

[0088] The front and rear roll forming assemblies can be additional structures or structures belonging to the preceding or following process. They are simply located close to the hot pressing mechanism to facilitate changing the state of the upper and lower films to meet the needs of hot pressing lamination.

[0089] The understanding of the front and rear roller pressing assemblies clamping the upper and lower films can be that the front and rear roller pressing assemblies continuously switch between clamping and releasing the clamping state simultaneously, or that the front roller pressing assembly continuously switches between clamping and releasing the clamping state while the rear roller pressing assembly continuously maintains the clamping state.

[0090] The rear roller pressing assembly remains in a clamping state, which helps to maintain the hot pressing composite effect and prevents the upper film from rising when the front pressure roller 130 returns, thus preventing the hot-pressed parts from being separated again. It also prevents the lifting roller 180 from lifting the upper film, thus preventing the hot-pressed parts from being separated again.

[0091] In this embodiment, the front pressure roller 130 can rise and fall. Therefore, when the front pressure roller 130 rises to its highest point, a first gap 160 can be formed between the upper and lower films at the hot pressing mechanism, allowing the electrode sheet to be placed on the lower film. When the front pressure roller 130 falls to its lowest point, the upper and lower films can be flatly attached.

[0092] It is easy to understand that in this embodiment, by raising and lowering the front pressure roller 130, a first gap 160 is formed between the upper and lower films after the front pressure roller 130 is raised, which facilitates the placement of the electrode on the upper film. Thus, the electrode composite device can also be used for the composite of single or single-segment electrode sheets, and still only requires one composite operation, thus expanding the function of the equipment.

[0093] The understanding of "can" should be understood as being able to achieve something when the highest and lowest points are reached, but it does not mean that it can only be achieved at the highest or lowest points. The corresponding effect can be achieved before reaching the highest and lowest points.

[0094] In this embodiment, the front support roller 120 and the rear support roller 140 are set at the same height, so that the lower film is laid flat, which can place the electrode sheet and prevent the electrode sheet from sliding on the lower film.

[0095] In some specific embodiments of this utility model, the electrode composite device may include an electrode transfer member 170, which is used to adsorb the electrode. The electrode transfer member 170 can move to the first gap 160 and place the electrode on the lower membrane.

[0096] It is easy to understand that, by setting the electrode transfer member 170, this embodiment can adsorb and transfer the electrode to the lower film, thus meeting the needs of one-time lamination.

[0097] Meanwhile, the adsorption method transfers the electrode, making it easy to pick up and remove, and it does not occupy the bottom space of the electrode, making it convenient to place.

[0098] In some specific embodiments of this utility model, the electrode transfer member 170 can be moved along the conveying direction of the lower film to the first gap 160.

[0099] It is easy to understand that by moving the electrode transfer member 170 along the conveying direction of the lower film in this embodiment, it is also convenient for the electrode transfer member 170 to lift the upper film, reducing the probability of damage to the upper film. At the same time, the electrode can be transferred to a position close to the rear roller pressing assembly, thereby allowing more electrode to be placed on the upper film and improving the hot pressing output.

[0100] In some specific embodiments of this utility model, the top and front end of the electrode transfer member 170 can be smoothed to avoid scratching the coating.

[0101] In some specific embodiments of this utility model, the electrode transfer member 170 may be provided with a lifting roller 180, which is used to abut against the upper film so as to separate the upper film from the electrode transfer member 170.

[0102] It is easy to understand that in this embodiment, by setting up the lifting roller 180, the electrode transfer member 170 contacts the upper film through the lifting roller 180. During the transfer process of the electrode transfer member 170, the lifting roller 180 rotates to reduce friction on the upper film and avoid damage to the upper film.

[0103] In some specific embodiments of this utility model, the lower hot pressing assembly 110 may include a lower hot pressing plate 190, and the apex of the front support roller 120 and / or the rear support roller 140 may be higher than the lower hot pressing plate 190, so that the lower film is separated from the lower hot pressing plate 190.

[0104] It is easy to understand that in this embodiment, by making the apex of the front support roller 120 and / or the rear support roller 140 higher than the lower hot platen 190, the lower film can be separated from the lower hot platen 190 without affecting the movement of the lower film. This avoids the lower hot platen 190 from contacting and heating the lower film for a long time, avoids the lower film from deforming or shrinking due to heat, and avoids the lower film from deforming and affecting the accuracy.

[0105] The fact that the apex of the front support roller 120 and / or the rear support roller 140 is higher than the lower hot platen 190 means that at least one of them satisfies the positional relationship, which can achieve the effect of separating the lower film from the lower hot platen 190.

[0106] In some specific embodiments of this utility model, the upper hot pressing assembly 100 may include an upper hot pressing plate 210, and the low point of the front pressure roller 130 and / or the rear pressure roller 150 may be lower than the upper hot pressing plate 210, so that the upper hot pressing plate 210 is separated from the upper film.

[0107] It is easy to understand that in this embodiment, by making the lowest point of the front pressure roller 130 and / or the rear pressure roller 150 lower than the upper hot press plate 210, the upper hot press plate 210 is separated from the upper film, which does not affect the movement of the upper film, and also avoids the upper hot press plate 210 from contacting and heating the upper film for a long time, thus avoiding the upper film from deforming or shrinking due to heat, which would affect the accuracy of the upper film.

[0108] The lower point of the front pressure roller 130 and / or the rear pressure roller 150 is lower than the upper hot platen 210, meaning that at least one of them satisfies the positional relationship, which can achieve the effect of separating the upper film from the upper hot platen 210.

[0109] For the apex of the front support roller 120 and / or the rear support roller 140 to be higher than the lower hot platen 190, the apex of one of the front support roller 120 and the rear support roller 140 may be higher than the lower hot platen 190, and the apex of the other of the front support roller 120 and the rear support roller 140 may be at the same height as or slightly lower than the lower hot platen 190.

[0110] In this embodiment, the apex of both the front support roller 120 and the rear support roller 140 is higher than the lower hot press plate 190, which facilitates adjustment by the operator and makes it easy to apply.

[0111] In some specific embodiments of this utility model, the front support roller 120 and / or the rear support roller 140 can elastically support the lower film.

[0112] It is easy to understand that, in this embodiment, by having the front support roller 120 and / or the rear support roller 140 elastically support the lower film, on the one hand, the requirement of separating the lower film from the lower hot press plate 190 can be met; on the other hand, when the front pressure roller 130 and the rear pressure roller 150 press down, the front support roller 120 and the rear support roller 140 can descend, so that the lower film comes into contact with the lower hot press plate 190, thus meeting the composite requirements.

[0113] For the front support roller 120 and / or the rear support roller 140 to elastically support the lower film, at least one of the front support roller 120 and the rear support roller 140 can be connected to a spring telescopic seat to facilitate the descent of the lower film and its contact with the lower hot platen 190.

[0114] In this embodiment, both the front support roller 120 and the rear support roller 140 elastically support the lower film, enabling the lower film to descend as a whole and adhere to the lower hot press plate 190.

[0115] In some specific embodiments of this utility model, the lower hot pressing assembly 110 may include a lower hot pressing plate 190, which has an adsorption surface 200 for adsorbing the lower film and the electrode sheet.

[0116] It is easy to understand that by giving the lower hot platen 190 an adsorption surface 200, this embodiment also facilitates the fixing of the lower film and the electrode, prevents the electrode from moving freely, and ensures the composite quality.

[0117] In some specific embodiments of this utility model, the electrode composite device may include a dust removal component, which is used to remove dust between the upper hot pressing component 100 and the lower hot pressing component 110. The dust removal component includes a dust blowing component and a dust suction component, which are located on the left and right sides of the lower film conveying direction.

[0118] It is easy to understand that this embodiment sets up a dust removal component, which includes a dust blowing component and a dust suction component. Thus, the dust is blown up by the dust blowing component and the dust is sucked away by the dust suction component, thus avoiding dust pollution on site. At the same time, it enables dust that is far away from the dust blowing component and the dust suction component to be carried away, reducing the difficulty of arranging the dust blowing component and the dust suction component, and also making it convenient to remove dust located in the middle or center of the hot pressing mechanism.

[0119] The blowing and suction components can be understood as parts with air vents, which is easy to understand and is not illustrated in this embodiment.

[0120] In some specific embodiments of this utility model, the discharge side of the rear roll forming assembly may also be provided with a winding mechanism or a re-rolling mechanism to meet the needs of battery cell manufacturing.

[0121] For the hot pressing mechanism, the hot pressing mechanism can be set on the mold frame. The mold frame has an upper mold plate, a lower mold plate, and guide pillars, which facilitates lifting and lowering, and also makes it easy to produce different battery cells by changing the mold frame.

[0122] For the hot pressing mechanism, the electrode composite device includes an electric cylinder, etc. The electric cylinder drives the upper template to achieve lifting and lowering.

[0123] The electrode composite device also includes Figure 1 The horizontal screw is used to adjust the position of the electric cylinder for easy use.

[0124] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0125] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0126] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0127] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0128] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0129] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An electrode composite device, characterized in that, The electrode bonding apparatus, used for bonding the electrode sheet between the upper and lower films, comprises: The hot pressing mechanism includes an upper hot pressing assembly (100) and a lower hot pressing assembly (110), the space between the upper hot pressing assembly (100) and the lower hot pressing assembly (110) is sufficient to allow the electrode, the upper film and the lower film to pass through, and the upper hot pressing assembly (100) and the lower hot pressing assembly (110) are heated by clamping them from above and below; The front roller pressing assembly is located on the material receiving side of the hot pressing mechanism and includes a front support roller (120) and a front pressure roller (130). The rear roller pressing assembly is located on the discharge side of the hot pressing mechanism and includes a rear support roller (140) and a rear pressure roller (150). The front and rear roller pressing assemblies clamp the upper and lower films to make them flat and evenly bonded. Then, the hot pressing mechanism performs hot pressing to form a battery cell.

2. The electrode composite device according to claim 1, characterized in that, The front pressure roller (130) is capable of rising and falling. When the front pressure roller (130) rises to its highest point, a first gap (160) can be formed between the upper film and the lower film at the hot pressing mechanism. The first gap (160) allows the electrode sheet to be placed on the lower film. When the front pressure roller (130) descends to its lowest point, the upper film and the lower film can be flatly attached.

3. The electrode composite device according to claim 2, characterized in that, The electrode composite device includes an electrode transfer member (170) for adsorbing the electrode, the electrode transfer member (170) being movable to the first gap (160) and placing the electrode on the lower membrane.

4. The electrode composite device according to claim 3, characterized in that, The electrode transfer member (170) moves along the conveying direction of the lower film to the first gap (160). And / or, the electrode transfer member (170) is provided with a lifting roller (180) for abutting the upper film to separate the upper film from the electrode transfer member (170).

5. The electrode composite device according to claim 1, characterized in that, The upper hot pressing assembly (100) includes an upper hot pressing plate (210), and the lower hot pressing assembly (110) includes a lower hot pressing plate (190). The upper hot pressing plate (210) and / or the lower hot pressing plate (190) are provided with elastic pressure blocks (220), and the elastic pressure blocks (220) protrude toward the electrode sheet.

6. The electrode composite device according to claim 1, characterized in that, The upper hot press assembly (100) includes an upper hot press plate (210), and the lower point of the front pressure roller (130) and / or the rear pressure roller (150) is lower than the upper hot press plate (210) to separate the upper hot press plate (210) from the upper film.

7. The electrode composite device according to claim 1, characterized in that, The lower hot-pressing assembly (110) includes a lower hot-pressing plate (190) having an adsorption surface (200) for adsorbing the lower film and the electrode. And / or, the electrode composite device includes a dust removal component for removing dust between the upper hot pressing component (100) and the lower hot pressing component (110), the dust removal component including a dust blowing component and a dust suction component, the dust blowing component and the dust suction component being located on the left and right sides of the lower film conveying direction.

8. The electrode composite device according to claim 1, characterized in that, The lower hot press assembly (110) includes a lower hot press plate (190), and the apex of the front support roller (120) and / or the rear support roller (140) is higher than the lower hot press plate (190) to separate the lower film from the lower hot press plate (190).

9. The electrode composite device according to claim 1, characterized in that, The front support roller (120) and / or the rear support roller (140) elastically support the lower film.

10. Battery cell manufacturing equipment, characterized in that, Includes the electrode composite device according to any one of claims 1 to 9.

Images