Diaphragm slitting device and diaphragm cutting system

Abstract

The utility model belongs to the technical field of battery diaphragm processing, and particularly relates to a diaphragm slitting device and a diaphragm cutting system. The diaphragm slitting device comprises a supporting flow guide mechanism, a slitting component and a dust collection mechanism. The supporting flow guide mechanism comprises a supporting part, an adsorption flow guide part and a connecting part; a conveying cavity is formed in the supporting part; a conveying outlet and a conveying inlet are further formed in the supporting part; the conveying outlet and the conveying inlet are respectively communicated with the conveying cavity; the supporting part is communicated with the dust collection mechanism; the adsorption flow guide part is connected to the conveying inlet and communicates with the conveying cavity; the connecting part is connected to the interior of the adsorption flow guide part, and an adsorption hole is formed between the connecting part and the adsorption flow guide part; the slitting component is connected to the side end, away from the supporting component, of the connecting component. The slitting adsorption device can improve the slitting adsorption efficiency and guarantee the cleanliness of equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery diaphragm processing, and particularly relates to a diaphragm cutting device and a diaphragm cutting system. Background Art

[0002] In the structure of lithium batteries, the diaphragm is one of the key internal components. The performance of the diaphragm determines the interface structure and internal resistance of the battery, and directly affects the battery's capacity, cycle and safety performance. A diaphragm with excellent performance plays an important role in improving the overall performance of the battery. Existing diaphragms are mainly divided into single diaphragms and composite diaphragms. As companies have higher and higher requirements for the safety, pore size, liquid absorption and moisture retention of diaphragms, the existing single diaphragms can no longer fully meet the requirements of companies. Composite diaphragms have become an important direction for future development. At present, composite diaphragms are usually prepared by diaphragm coating.

[0003] At present, the main membrane coating technology is ceramic coating, that is, a ceramic layer is coated on the surface of the substrate, and the two are bonded together by a viscous substance such as an adhesive. However, it is precisely because of the stickiness of the viscous substance that the surface or periphery of the membrane is very easy to absorb dust. When the membrane is cut, due to the effect of factors such as the cutting force, the cutting parts around the membrane are also easy to absorb dust; therefore, a dust suction structure needs to be added for special adsorption. However, the dust suction structure of most existing membrane cutting devices occupies a large space and has a narrow adsorption range, resulting in poor adsorption effect and slow adsorption speed. Utility Model Content

[0004] The purpose of the utility model is to provide a membrane slitting device and a membrane cutting system to solve the problems of poor adsorption effect and slow adsorption speed in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A diaphragm slitting device comprises a supporting flow-guiding mechanism, a slitting component and a dust suction mechanism; the supporting flow-guiding mechanism comprises a supporting component, an adsorption flow-guiding component and a connecting component; a conveying cavity is provided in the supporting component; a conveying outlet and a conveying inlet are also provided in the supporting component; the conveying outlet and the conveying inlet are respectively connected to the conveying cavity; and the supporting component is connected to the dust suction mechanism; the adsorption flow-guiding component is connected to the conveying inlet and is connected to the conveying cavity; the connecting component is connected to the inside of the adsorption flow-guiding component, and an adsorption hole is provided between the connecting component and the adsorption flow-guiding component; the slitting component is connected to one side end of the connecting component away from the supporting component.

[0007] Preferably: the connecting component includes a support and a connecting block connected to the side end of the support; the connecting block is connected to the inner wall of the adsorption and flow-guiding component; and at least two adsorption holes are formed between the connecting block and the inner wall of the adsorption and flow-guiding component; the cutting component is connected to the support.

[0008] Preferably: a fixing block is provided at one end of the connection block away from the support; the fixing block is detachably connected to the inner wall of the adsorption and flow-guiding component.

[0009] Preferably: the dust suction mechanism includes a recovery guide pipe, a recovery box and an exhaust component; a recovery inner cavity is provided in the recovery guide pipe; and the recovery inner cavity is connected to the conveying cavity; an airflow discharge port and an impurity discharge hole are provided in the recovery inner cavity; and the airflow discharge port is connected to the exhaust component; and the impurity discharge hole is connected to the recovery box.

[0010] Preferably: the dust collection mechanism further includes a filter component; the filter component is connected to the airflow discharge port of the recovery guide pipe.

[0011] Preferably: the dust suction mechanism further comprises an airflow pipe and an exhaust component; the left and right ends of the airflow pipe are respectively connected to the recovery guide pipe and the air extraction component; the exhaust component is connected to the bottom of the airflow pipe.

[0012] Preferably, the diaphragm slitting device further comprises a control valve, and the control valve is arranged between the supporting component and the dust collecting mechanism.

[0013] Preferably: the inner wall of the support component located at the delivery outlet is provided with a guiding slope; and the inner diameter of the guiding slope close to the outer side of the delivery outlet is smaller than the inner diameter of the guiding slope close to the inner side of the delivery outlet.

[0014] Preferably: the membrane slitting device further comprises a support roller group; the support roller group is arranged below the blade end of the slitting component; and a slitting gap is provided between the support roller group and the slitting component.

[0015] The utility model also discloses a membrane cutting system, comprising an unwinding roller group, a winding roller group and the above-mentioned membrane slitting device; and the unwinding roller group, the membrane slitting device and the winding roller group are arranged in sequence.

[0016] The beneficial effect of the utility model lies in that the technical solution adopts a cutting component to be assembled into the adsorption and guide component through a connecting component, thereby avoiding the adsorption and guide component from extending outward and increasing the occupied area, and can also directionally adsorb impurities such as dust while the cutting component is cutting, avoiding the impurities from spreading around, thereby effectively reducing the occupied space of the equipment, and can also increase the speed of dust and other impurities absorption, thereby improving the cutting and adsorption efficiency and ensuring the cleanliness of the equipment; in addition, the supporting component and the dust collection mechanism are sequentially arranged in the conveying and discharge direction of the adsorption and guide component, thereby ensuring the compactness of the overall structure and reducing the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will refer to the attached Figures 1 to 4 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0018] Figure 1 This is a schematic structural diagram of a diaphragm cutting device according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of assembling the slitting components and the adsorption and flow guiding components of the diaphragm slitting device according to one embodiment of the utility model;

[0020] Figure 3 This is a structural schematic diagram of a dust collection mechanism of a diaphragm slitting device according to an embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a diaphragm cutting system according to an embodiment of the utility model.

[0022] In the figure: 1-support component; 11-conveying cavity; 12-conveying outlet; 13-guide slope; 14-conveying inlet; 2-adsorption guide component; 21-adsorption hole; 3-connecting component; 31-support; 32-connecting block; 33-fixing block; 4-cutting component; 5-dust suction mechanism; 51-shell; 52-recovery guide pipe; 521-airflow discharge port; 522-impurity discharge hole; 523-discharge cavity; 53-recovery box; 54-filter component; 55-exhaust component; 551-airflow pipe; 56-exhaust component; 6-control valve; 7-support roller group; 8-unwinding roller group; 9-winding roller group. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship between the membrane slitting device and the membrane cutting system to describe the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and multiple situations exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are an "or" relationship between the membrane slitting device and the membrane cutting system.

[0027] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0028] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] The following is combined with Figure 1 to Figure 4 The utility model is further described in detail, but it is not intended to limit the utility model.

[0031] like Figure 1 As shown, in one embodiment of the utility model, the diaphragm slitting device comprises a supporting flow guiding mechanism, a slitting component 4 and a dust collecting mechanism 5; the supporting flow guiding mechanism comprises a supporting component 1, an adsorption flow guiding component 2 and a connecting component 3; a conveying cavity 11 is provided in the supporting component 1; a conveying outlet 12 and a conveying inlet 14 are also provided in the supporting component 1; the conveying outlet 12 and the conveying inlet 14 are respectively connected to the conveying cavity 11; and the supporting component 1 is connected to the dust collecting mechanism 5; the adsorption flow guiding component 2 is connected to the conveying inlet 14 and is connected to the conveying cavity 11; the connecting component 3 is connected to the inside of the adsorption flow guiding component 2, and an adsorption hole 21 is provided between the adsorption flow guiding component 2 and the adsorption flow guiding component 2; the slitting component 4 is connected to one side end of the connecting component 3 away from the supporting component 1. Among them, the slitting component 4 is a slitting knife; the adsorption flow guiding component 2 is a circular flow guiding tube.

[0032] The technical solution of the utility model adopts a cutting component to be assembled into the adsorption and guide component through a connecting component, so as to avoid the adsorption and guide component from extending outward and increasing the occupied area, and can also directionally adsorb impurities such as dust while the cutting component is cutting, so as to avoid the impurities from spreading around, thereby effectively reducing the occupied space of the equipment, and can also increase the speed of dust and other impurities absorption, thereby improving the cutting and adsorption efficiency and ensuring the cleanliness of the equipment; in addition, the supporting component and the dust collection mechanism are sequentially arranged in the conveying and discharge direction of the adsorption and guide component, so as to ensure the compactness of the overall structure and reduce the occupied space.

[0033] The number of the delivery inlet 14 is at least one; and the number of the adsorption guide components 2 corresponds to the number of the delivery inlet 14. Figure 1As shown, there are three delivery inlets 14; there are three adsorption guide components 2 and they are arranged side by side in the corresponding delivery inlets 14. This structure can realize that the three cutting components 4 cut the diaphragm structure of corresponding thickness into four diaphragms of corresponding width, thereby improving the cutting speed and quantity, and further improving the diaphragm cutting efficiency.

[0034] Specifically, in some embodiments, Figure 1 As shown, the membrane slitting device further includes a support roller set 7; the support roller set 7 is arranged below the blade end of the slitting component 4; and a slitting gap is provided between the support roller set 7 and the slitting component 4. The support roller set 7 includes at least one support roller body; the support roller body is connected to a support drive motor. Through the rotatable performance of the support roller body, the process of slitting and conveying can be realized, thereby improving the operation efficiency.

[0035] Specifically, in some embodiments, Figure 1 and 2 As shown, the connecting component 3 includes a support 31 and at least one connecting block 32 connected to the side end of the support 31; the connecting block 32 is connected to the inner wall of the adsorption and flow-guiding component 2; and at least two adsorption holes 21 are formed between the connecting block 32 and the inner wall of the adsorption and flow-guiding component 2; the cutting component 4 is connected to the support 31. Furthermore, the cutting component 4 is connected to the support 31 by electric welding or screws. In other words, a plurality of adsorption holes 21 are arranged in the circumferential direction of the cutting component 4 to comprehensively adsorb impurities generated by cutting, thereby reducing the splashing of impurities and further improving the adsorption and cleaning effect. Furthermore, as Figure 2 As shown, a fixing block 33 is provided at one end of the connection block 32 away from the support 31; the fixing block 33 is detachably connected to the inner wall of the adsorption guide component 2. Among them; one end of the fixing block 33 is clamped or connected to the support 31 by screws or welding; and the other end of the fixing block 33 is clamped or connected to the inner wall of the adsorption guide component 2 by screws or welding. Further, the support 31 is a cylindrical support; the connection block 32 is a square connection block; the fixing block 33 is a square fixing block; of course, the support 31, the connection block 32 and the fixing block 33 can also be other structures with corresponding functions, which are not limited here one by one.

[0036] Specifically, in some embodiments, Figure 1 As shown, the inner wall of the support component 1 at the delivery outlet 12 is provided with a guiding slope 13; and the inner diameter of the guiding slope 13 close to the outer side of the delivery outlet 12 is smaller than the inner diameter of the guiding slope 13 close to the inner side of the delivery outlet 12. That is to say, when the airflow with impurities passes through the delivery outlet 12, the discharge speed can be appropriately increased, and the retention amount of impurities such as dust can be reduced under the action of a higher flow rate, thereby improving the adsorption speed and effect.

[0037] Specifically, in some embodiments, Figure 1 As shown, the diaphragm slitting device further includes a control valve 6, which is disposed between the support component 1 and the dust collecting mechanism 5. The control valve 6 is a one-way valve, etc. The start or stop of the adsorption process can be effectively controlled by the control valve 6, thereby improving the control efficiency.

[0038] Specifically, in some embodiments, Figure 1 and 3 As shown, the dust collection mechanism 5 includes a shell 51, a recovery guide pipe 52, a recovery box 53 and an exhaust component 55; the recovery guide pipe 52 is connected to the inside of the shell 51, and a recovery inner cavity 523 is provided in the recovery guide pipe 52; and the recovery inner cavity 523 is communicated with the conveying cavity 11 (wherein, the recovery inner cavity 523 is communicated with the control valve 6; the control valve 6 is communicated with the conveying cavity 11); an airflow discharge port 521 and an impurity discharge hole 522 are provided in the recovery inner cavity 523; and the airflow discharge port 521 is communicated with the exhaust component 55; the exhaust component 55 is connected to the inside of the shell 51; the impurity discharge hole 522 is communicated with the recovery box 53; and the recovery box 53 is connected to the inside of the shell 51. Among them, the exhaust component 55 is an exhaust fan. This structure can cause the air pressure of the conveying cavity 11 to decrease through the exhaust action, thereby realizing a rapid exhaust adsorption action.

[0039] Specifically, in some embodiments, Figure 3 As shown, the dust collecting mechanism 5 further includes a filter component 54; the filter component 54 is connected to the airflow discharge port 521 of the recovery guide pipe 52. The filter component 54 may be a filter net. This structure can prevent impurities from passing through the exhaust fan and damaging the exhaust fan through the filtering effect of the filter component on the extracted airflow, thereby improving the safety of use.

[0040] Specifically, in some embodiments, Figure 3 As shown, the dust collecting mechanism 5 also includes an airflow pipe 551 and an exhaust component 56; the left and right ends of the airflow pipe 551 are respectively connected to the recovery guide pipe 52 and the air extraction component 55; the exhaust component 56 is connected to the bottom of the airflow pipe 551. That is, when it is necessary to extract air to absorb impurities, the control valve 6 is opened and the air extraction component 55 is started, and the exhaust component 56 is closed at the same time; the air extraction component 55 is used to achieve rapid air extraction. When the air extraction is completed and the filter component 54 is preliminarily cleaned, the control valve 6 and the air extraction component 55 are closed, and the exhaust component 56 is started at the same time, and under the impact of the exhaust component 56, some impurities fall off from the filter net to the recovery box.

[0041] The utility model also provides a membrane cutting system, which includes a membrane cutting device. The specific structure of the membrane cutting device refers to the above embodiment. Since the membrane cutting system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Figure 4 As shown, the membrane cutting system also includes: an unwinding roller group 8, a supporting roller group 7 and a winding roller group 9 are arranged in sequence. Among them, the unwinding roller group 8 includes an unwinding roller body, and the unwinding roller body is connected to the unwinding drive motor; the winding roller group 9 includes at least two winding roller bodies; all the winding roller bodies are connected to their respective winding drive motors.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0043] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A diaphragm cutting device, characterized in that: It includes a supporting flow-guiding mechanism, a cutting component and a dust-collecting mechanism; the supporting flow-guiding mechanism includes a supporting component, an adsorption flow-guiding component and a connecting component; a conveying cavity is arranged in the supporting component; a conveying outlet and a conveying inlet are also arranged in the supporting component; the conveying outlet and the conveying inlet are respectively communicated with the conveying cavity; and the supporting component is communicated with the dust-collecting mechanism; the adsorption flow-guiding component is connected to the conveying inlet and is communicated with the conveying cavity; the connecting component is connected to the inside of the adsorption flow-guiding component, and an adsorption hole is arranged between the connecting component and the adsorption flow-guiding component; the cutting component is connected to one side end of the connecting component away from the supporting component.

2. The diaphragm cutting device according to claim 1, characterized in that: The connecting component includes a support and a connecting block connected to the side end of the support; the connecting block is connected to the inner wall of the adsorption and flow-guiding component; and at least two adsorption holes are formed between the connecting block and the inner wall of the adsorption and flow-guiding component; the cutting component is connected to the support.

3. The diaphragm cutting device according to claim 2, characterized in that: A fixing block is provided at one side end of the connection block away from the support; the fixing block is detachably connected to the inner wall of the adsorption guide component.

4. The diaphragm cutting device according to claim 1, characterized in that: The dust suction mechanism includes a recovery guide pipe, a recovery box and an exhaust component; a recovery inner cavity is provided in the recovery guide pipe; and the recovery inner cavity is connected with the conveying cavity; an airflow discharge port and an impurity discharge hole are provided in the recovery inner cavity; and the airflow discharge port is connected with the exhaust component; and the impurity discharge hole is connected with the recovery box.

5. The diaphragm cutting device according to claim 4, characterized in that: The dust collection mechanism also includes a filter component; the filter component is connected to the airflow discharge port of the recovery guide pipe.

6. The diaphragm cutting device according to claim 4 or 5, characterized in that: The dust suction mechanism also includes an airflow pipe and an exhaust component; the left and right ends of the airflow pipe are respectively connected to the recovery guide pipe and the air extraction component; the exhaust component is connected to the bottom of the airflow pipe.

7. The diaphragm cutting device according to claim 1, characterized in that: The diaphragm slitting device further comprises a control valve, and the control valve is arranged between the supporting component and the dust collecting mechanism.

8. The diaphragm cutting device according to claim 1, characterized in that: The inner wall of the support component at the delivery outlet is provided with a guiding slope; and the inner diameter of the guiding slope close to the outer side of the delivery outlet is smaller than the inner diameter of the guiding slope close to the inner side of the delivery outlet.

9. The diaphragm cutting device according to claim 1, characterized in that: The diaphragm slitting device further comprises a supporting roller group; the supporting roller group is arranged below the blade end of the slitting component; and a slitting gap is arranged between the supporting roller group and the slitting component.

10. A membrane cutting system, characterized in that: It comprises an unwinding roller group, a winding roller group and the membrane slitting device according to any one of claims 1 to 9; and the unwinding roller group, the membrane slitting device and the winding roller group are arranged in sequence.

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