Dust collection structure and pole piece rolling equipment
By forming a vacuum-absorbing structure with a negative pressure chamber in the adsorption roller, the dust on the electrode sheet is absorbed by micro-groove or micro-porous structure, the problem of damage to the electrode sheet and dust entering the battery cell of the existing equipment is solved, and high efficiency and safety are achieved dust removal effect.
Patent Information
- Application Number
- CN202323460360.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-19
AI Technical Summary
Existing dust removal equipment is prone to damage the surface of the electrode sheet when cleaning the electrode sheet, and dust entering the inside of the battery cell may cause short circuit or performance degradation, affecting the safety and performance of lithium-ion batteries.
Design a vacuum-sucking structure, by forming a negative pressure chamber in the adsorption roller, and creating negative pressure using a pumping negative pressure fan. The adsorption unit is a micro-groove or micro-porous structure. The adsorption roller and the connecting pipe are connected through bearings and seals to ensure negative pressure. The formation and function of the press chamber avoid damage to the pole sheet.
It effectively absorbs dust on the surface of the pole sheet without damaging the items to be cleaned, maximizes the dust removal effect and ensures the safety and performance of the battery.
Smart Images
Figure CN222175227U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of dust adsorption structures, and in particular relates to a dust absorption structure and pole piece rolling equipment. Background Art
[0002] Nowadays, with the development of modern society and the enhancement of people's environmental awareness, more and more devices choose lithium-ion batteries as power sources, such as mobile phones, laptops, power tools and electric vehicles, which provides a broad space for the application and development of lithium-ion batteries.
[0003] The pole piece is an important component of lithium-ion batteries. Currently, pole pieces are cut in various ways. In the cutting process, debris and other dust are inevitable. The dust is easy to adhere to the pole piece and enter the battery cell with the pole piece. The dust entering the battery cell can easily pierce the diaphragm under high voltage, causing the battery cell to short circuit. In severe cases, it may even cause safety accidents such as battery fire. At the same time, the presence of dust will also increase the voltage drop of the battery, causing battery performance to decline.
[0004] Therefore, the dust removal of the pole piece is very important for the cycle performance and safety performance of the battery, and the existing dust removal equipment mostly uses brushes or air knives to remove dust, which may cause damage to the pole piece while removing dust. Therefore, it is urgent to propose a new technical solution to solve the above problem. Utility Model Content
[0005] One of the purposes of the utility model is to provide a dust suction structure to address the deficiencies of the prior art, which forms a negative pressure chamber in the adsorption roller by sucking a negative pressure fan, and can remove dust from the items to be cleaned without damaging them, thereby achieving a good dust removal effect.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A dust suction structure comprises an adsorption component, a connecting pipe and a dust collecting trough, wherein the adsorption component is connected to the dust collecting trough through the connecting pipe, and the connecting pipe is provided with an output port, and the output port is used to connect to a negative pressure fan; the adsorption component comprises an adsorption roller and a negative pressure chamber arranged in the adsorption roller, the negative pressure chamber is connected to the connecting pipe, and an adsorption unit is arranged on the surface of the adsorption roller, and the adsorption unit is arranged corresponding to the negative pressure chamber.
[0008] In actual applications, according to the needs of dust removal, the utility model can be arranged on both sides or one side of the object to be cleaned to meet the cleaning requirements. The power and size of the negative pressure fan can be selected and replaced according to actual conditions. The output end of the negative pressure fan is connected to the output port.
[0009] As an improvement of the dust suction structure described in the utility model, the adsorption unit is one of a microgroove structure and a micropore structure. When in use, the dust on the corresponding pole piece enters the negative pressure chamber through the adsorption unit without damaging the structure of the pole piece surface, thereby increasing the safety of the dust suction component.
[0010] As an improvement of the dust suction structure described in the utility model, the adsorption unit is a micro-groove structure running through the adsorption roller, the length of the adsorption unit in the length direction of the adsorption roller is 20-200mm, and the width of the adsorption unit in the width direction of the adsorption roller is 50μm-5mm.
[0011] As an improvement of the dust suction structure described in the utility model, the adsorption unit is a microporous structure that penetrates the adsorption roller, and the diameter of the microporous structure is 50 μm-3000 μm.
[0012] As an improvement of the dust suction structure described in the utility model, the negative pressure in the inner cavity of the negative pressure chamber is 0.2MPa-10Mpa. The setting of the negative pressure value in the inner cavity of the negative pressure chamber can maximize the adsorption of dust on the surface of the electrode while ensuring that no damage is caused to the electrode, thereby achieving a good dust removal effect.
[0013] As an improvement of the dust suction structure described in the utility model, a bearing is provided at one end of the adsorption roller close to the connecting pipe, and the bearing is used for connecting the adsorption roller and the connecting pipe, which can reduce friction.
[0014] As an improvement of the dust collection structure described in the utility model, the bearing is provided with a connecting port, and the connecting pipe is connected to the negative pressure chamber through the connecting port.
[0015] As an improvement of the dust suction structure described in the utility model, the connecting port is arranged at the center of the bearing, which can avoid the situation where the adsorption effect is reduced due to the uneven negative pressure in the inner cavity of the negative pressure cavity, thereby further improving the dust removal effect.
[0016] As an improvement of the dust suction structure described in the utility model, a seal is provided at one end of the adsorption roller away from the connecting pipe, the negative pressure chamber is in contact with the seal or a gap is left between the seal, and the seal and the bearing ensure the formation of the negative pressure chamber and the realization of the adsorption function.
[0017] As an improvement of the dust suction structure described in the utility model, the diameter of the negative pressure chamber is 50 μm-5 mm.
[0018] As an improvement of the dust collection structure described in the utility model, the dust collecting trough is located below the connecting pipe, the input end of the dust collecting trough is located between the output port and the adsorption roller, and a blocking piece is provided at one end of the output port away from the input end of the dust collecting trough.
[0019] The second purpose of the utility model is to provide a pole piece rolling device, including the above-mentioned dust suction structure
[0020] The beneficial effect of the utility model is that the dust suction structure of the utility model includes an adsorption component, a connecting pipe and a dust collecting tank, the adsorption component is connected to the dust collecting tank through the connecting pipe, the connecting pipe is provided with an output port, and the output port is used to connect to a negative pressure exhaust fan; the adsorption component includes an adsorption roller and a negative pressure chamber arranged in the adsorption roller, the negative pressure chamber is connected to the connecting pipe, and an adsorption unit is arranged on the surface of the adsorption roller, and the adsorption unit is arranged corresponding to the negative pressure chamber. The utility model forms a negative pressure chamber inside the adsorption roller, and the dust on the object to be cleaned enters the negative pressure chamber through the adsorption units distributed on the surface of the adsorption roller, and enters the dust collecting tank through the connecting pipe, thereby completing the adsorption and collection of dust on the surface of the object to be cleaned; at the same time, the setting of the negative pressure chamber in the utility model can remove dust without damaging the surface of the object to be cleaned, thereby achieving a good dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
[0022] Figure 1 It is a cross-sectional schematic diagram of implementation mode 1 of the present utility model.
[0023] Figure 2 It is a schematic structural diagram of the adsorption roller in the first embodiment of the utility model.
[0024] Figure 3 It is a schematic structural diagram of the adsorption roller in the second embodiment of the utility model.
[0025] The reference numerals are described as follows:
[0026] 1. adsorption component; 11. adsorption roller; 111. adsorption unit; 112. bearing; 1121. communication port; 113. sealing element; 12. negative pressure chamber;
[0027] 2. Connecting pipe; 21. Output port; 22. Blocking piece;
[0028] 3. Dust collection trough. DETAILED DESCRIPTION
[0029] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.
[0030] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0031] Reference to "embodiment" in this application means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places 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.
[0032] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0033] The production of battery pole pieces requires the following steps: the pole piece raw materials are processed to form a coating, the coating is applied to the current collector at intervals to obtain a semi-finished product, and the semi-finished product is cut and rolled to form pole pieces. In the cutting process, it is inevitable that dust such as debris will be generated. The dust is easy to adhere to the surface of the pole piece, thereby affecting the cycle performance and safety performance of the pole piece. This embodiment improves the equipment to maximize the adsorption of dust and achieve a good dust removal effect.
[0034] The following is combined with Figure 1-3 The utility model is further described in detail with specific implementation modes, but is not intended to limit the utility model.
[0035] Implementation Method 1
[0036] like Figure 1 As shown, a dust suction structure includes an adsorption component 1, a connecting pipe 2 and a dust collecting tank 3. The adsorption component 1 is connected to the dust collecting tank 3 through the connecting pipe 2. The connecting pipe 2 is provided with an output port 21, and the output port 21 is used to connect to a negative pressure fan; the adsorption component 1 includes an adsorption roller 11 and a negative pressure chamber 12 arranged in the adsorption roller 11, the negative pressure chamber 12 is connected to the connecting pipe 2, and an adsorption unit 111 is arranged on the surface of the adsorption roller 11, and the adsorption unit 111 is arranged corresponding to the negative pressure chamber 12.
[0037] In actual application, according to the dust removal needs of the items to be cleaned, the device can be set on one side of the items to be cleaned, or can be set on both sides of the items to be cleaned accordingly; when the device is set on both sides of the items to be cleaned, two devices can be set on both sides of the items to be cleaned accordingly, or two adsorption components 1 with a common connecting pipe 2 and a dust collecting trough 3 can be selected for dust removal. The selection can be made according to the actual situation and dust removal needs, and no specific setting is made; the power and size of the negative pressure fan can be selected according to actual needs, and the output end of the negative pressure fan is connected to the output port 21 to ensure the formation of the negative pressure chamber 12.
[0038] Preferably, the negative pressure in the inner cavity of the negative pressure chamber 12 is 0.2MPa-1.2Mpa, 1.2MPa-2.2Mpa, 2.2MPa-3.2Mpa, 3.2MPa-4.2Mpa, 4.2MPa-5.2Mpa, 5.2MPa-6.2Mpa, 6.2MPa-7.2Mpa, 7.2MPa-8.2Mpa, 8.2MPa-9.2Mpa, and 9.2MPa-10.2Mpa. The setting of the negative pressure value in the inner cavity can maximize the dust removal without damaging the surface of the objects to be cleaned, thereby achieving a good dust removal effect and meeting the dust removal requirements. At the same time, the existence of the negative pressure chamber 12 forms a vacuum area between the adsorption roller 11 and the corresponding objects to be cleaned, which can improve the deviation phenomenon of the objects to be cleaned during transportation.
[0039] Preferably, Figure 2 As shown, the adsorption unit 111 is a microporous structure that runs through the adsorption roller 11, and its diameter is 50μm-3000μm. It can be understood that the adsorption unit 111 serves as a passage for dust to enter the negative pressure chamber 12, and its diameter can be adjusted according to the size of the dust particles without specific settings; the adsorption unit 111 array in this embodiment is evenly distributed on the surface of the adsorption roller 111, and can evenly absorb dust on the surface of the object to be cleaned. In other embodiments, the adsorption units 111 can be distributed on the surface of the adsorption roller 11 in a center-surrounding arrangement without specific settings.
[0040] Preferably, a bearing 112 is provided at one end of the adsorption roller 11 close to the connecting pipe 2. The bearing 112 is used for connecting the adsorption roller 11 and the connecting pipe 2, which can increase the airtightness of the device. When the adsorption roller 11 rotates, the bearing 112 can also reduce the friction between the adsorption roller 11 and the connecting pipe 2, thereby increasing the service life of the dust collection structure. The driving member 112 is provided with a connecting port 1121, and the connecting pipe 2 is connected to the negative pressure chamber 12 through the connecting port 1121, thereby ensuring the fluidity between the components of the dust collection structure. The connecting port 1121 is provided in the middle of the bearing 112, thereby ensuring the negative pressure balance inside the negative pressure chamber 12.
[0041] Preferably, a seal 113 is provided at one end of the adsorption roller 11 away from the connecting pipe 2. The setting of the seal 113 and the bearing 11 can ensure the sealing of the entire equipment and the formation of the negative pressure chamber 12. The negative pressure chamber 12 is in contact with the seal 113 or a gap is left between the negative pressure chamber 12 and the seal 113, that is, the length of the negative pressure chamber 12 is not specifically limited and needs to be set according to the width of the cleaned items that actually need dust removal; the diameter of the negative pressure chamber 12 is 50μm-5mm. It should be noted that the negative pressure chamber 12 serves as the main body for absorbing and containing dust, and its diameter can be adjusted according to the dust particle size and dust content.
[0042] Preferably, the dust collecting trough 3 is located below the connecting pipe 2, and the input end of the dust collecting trough 3 is located between the output port 21 and the connecting bearing 112. Due to gravity and the direction of exhaust, the position setting can ensure that the dust can smoothly enter the dust collecting trough 3 and be collected. A blocking piece 22 is provided at one end of the output port 21 away from the input end of the dust collecting component 3. In the present embodiment, the blocking piece 22 is a screen blocking piece, which can prevent the dust in the absorption roller 11 from being sucked into the negative pressure fan.
[0043] Implementation Method 2
[0044] like Figure 3 As shown, the present embodiment is different from the first embodiment in that: the microgroove structure runs through the adsorption roller 11, the length of the adsorption unit 111 in the length direction of the adsorption roller 11 is 20-200mm, it can be understood that the length of the adsorption unit 111 needs to be greater than the length of the object to be cleaned, and can be adjusted according to actual conditions, and the width of the adsorption unit 111 in the width direction of the adsorption roller 11 is 50μm-5mm. Compared with the microporous structure, the microgroove structure can reduce the possibility of dust being retained in the adsorption unit 111, can ensure that the inhaled dust can be retained in the dust collecting tank 3, avoid dust re-adsorbed to the surface of the object to be cleaned, and further increase the dust removal effect.
[0045] The other structures and effects are the same as those of the first embodiment and will not be described in detail here.
[0046] Pole sheet rolling equipment
[0047] A pole piece rolling device includes the dust suction structure of embodiment one or embodiment two. When in use, the suction roller 11 in the dust suction structure is consistent with the pole piece belt running direction of the rolling device and is installed at a position close to the output end of the rolling device to absorb dust on the pole piece surface.
[0048] It is understandable that the dust suction structure can be applied to other items that need to absorb dust.
[0049] 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 dust collecting structure, It is characterized in that Comprising an adsorption component (1), a connecting pipe (2) and a dust collecting tank (3), the adsorption component (1) being connected to the dust collecting tank (3) via the connecting pipe (2), the connecting pipe (2) being provided with an output port (21), the output port (21) being used to be connected to a negative pressure exhaust fan; The adsorption component (1) comprises an adsorption roller (11) and a negative pressure chamber (12) arranged in the adsorption roller (11), the negative pressure chamber (12) being connected to the connecting pipe (2), and an adsorption unit (111) being arranged on the surface of the adsorption roller (11), the adsorption unit (111) being arranged corresponding to the negative pressure chamber (12).
2. The dust collecting structure according to claim 1, It is characterized in that The adsorption unit (111) is a micro-groove structure that runs through the adsorption roller (11); the length of the adsorption unit (111) in the length direction of the adsorption roller (11) is 20-200 mm; and the width of the adsorption unit (111) in the width direction of the adsorption roller (11) is 50 μm-5 mm.
3. The dust collecting structure according to claim 1, It is characterized in that The adsorption unit (111) is a microporous structure that penetrates the adsorption roller (11), and the diameter of the microporous structure is 50 μm-3000 μm.
4. The dust collecting structure according to claim 1, It is characterized in that The negative pressure in the negative pressure chamber (12) is 0.2 MPa-10 MPa.
5. The dust collecting structure according to claim 1, It is characterized in that A bearing (112) is provided at one end of the adsorption roller (11) close to the connecting pipe (2), and the bearing (112) is used for connecting the adsorption roller (11) to the connecting pipe (2).
6. The dust collecting structure according to claim 5, It is characterized in that The bearing (112) is provided with a communication port (1121), and the connection pipe (2) is connected to the negative pressure chamber (12) via the communication port (1121).
7. The dust collecting structure according to claim 1, It is characterized in that A sealing member (113) is provided at one end of the adsorption roller (11) away from the connecting pipe (2), and the negative pressure chamber (12) is in contact with the sealing member (113) or a gap is left between the negative pressure chamber (12) and the sealing member (113).
8. The dust collecting structure according to claim 1, It is characterized in that The diameter of the negative pressure chamber (12) is 50 μm-5 mm.
9. The dust collecting structure according to claim 2, It is characterized in that The dust collecting trough (3) is located below the connecting pipe (2); the input end of the dust collecting trough (3) is located between the output port (21) and the adsorption roller (11); and a blocking sheet (22) is provided at one end of the output port (21) away from the input end of the dust collecting trough (3).
10. A pole piece rolling device, It is characterized in that It comprises the dust collecting structure as described in any one of claims 1 to 9.