Wiping head and liquid injection hole wiping device

Abstract

The utility model relates to battery manufacturing technical field and provide a kind of wiping head and liquid injection hole wiping device.The wiping head of the utility model is used to wipe liquid injection hole on battery, the wiping head includes base body, base body includes first wiping part and second wiping part;Liquid injection hole is ladder hole, and has first through-hole and second through-hole, along liquid injection direction, the aperture of first through-hole is greater than the aperture of second through-hole, the side wall of first through-hole and the side wall of second through-hole are connected by step surface;First wiping part is set out convex relative to second wiping part, and first wiping part is used to wipe the side wall of first through-hole and step surface, and second wiping part is used to wipe the circumferential area of liquid injection hole on battery outer side surface.The utility model wiping head can better clean electrolyte remaining at step edge of liquid injection hole and battery outer side surface, so as to improve the cleaning effect of liquid injection hole, beneficial to guarantee the welding quality of subsequent sealing nail.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a wiping head. This utility model also relates to a wiping device with an injection hole equipped with the aforementioned wiping head. Background Technology

[0002] During battery manufacturing, electrolyte needs to be injected into the battery through the injection hole on the top cover. After the electrolyte injection is completed, electrolyte residue remains in the injection hole. This electrolyte will crystallize when exposed to air, blocking the injection hole and affecting the subsequent sealing of the battery. Therefore, it is necessary to wipe the electrolyte off the injection hole to prevent residual electrolyte from crystallizing and causing welding defects during battery sealing.

[0003] In related technologies, the currently widely used wiping head design in the industry is a multi-step cylindrical structure. Its working principle is to use axial pressure to press the wiping material, such as non-woven fabric, onto the inner wall of the injection hole, and then perform wiping in conjunction with rotational motion. However, when this type of wiping head presses down on the non-woven fabric, it causes the non-woven fabric to stretch and deform. This results in insufficient adhesion between the non-woven fabric and the edge of the injection hole step during the wiping process, making it difficult to clean completely. Consequently, electrolyte crystallization residue is easily left at the edge of the injection hole step, and this residual electrolyte crystallization will seriously affect the welding quality of the sealing nail. Utility Model Content

[0004] In view of this, the present invention aims to provide a wiping head to improve the cleaning effect of the injection hole.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A wiping head for wiping the electrolyte filling holes on a battery, the wiping head including a base, the base including a first wiping part and a second wiping part; The injection hole is a stepped hole and has a first through hole and a second through hole. Along the injection direction, the diameter of the first through hole is larger than the diameter of the second through hole. The sidewalls of the first through hole and the sidewalls of the second through hole are connected by a stepped surface. The first wiping part protrudes outward relative to the second wiping part, and the first wiping part is used to wipe the side wall of the first through hole and the stepped surface, while the second wiping part is used to wipe the circumferential area of ​​the injection hole on the outer side of the battery.

[0006] Furthermore, one end of the substrate has a boss; the first wiping part includes a plurality of first ribs disposed on the boss, and the plurality of first ribs are arranged radially with the axis of the substrate as the center.

[0007] Furthermore, along the injection direction, the sum of the size of the first rib and the thickness of the wiping material is consistent with the size of the first through hole.

[0008] Furthermore, the second wiping part includes a second rib disposed in the circumferential direction of the boss, and the second rib is a plurality of ribs arranged at intervals along the circumferential direction of the boss.

[0009] Furthermore, on the cross-section of the substrate, the second rib is arranged in a staggered manner from the first rib.

[0010] Furthermore, the substrate also includes a positioning part connected to the first wiping part, the positioning part being able to be positioned in the second through hole.

[0011] Furthermore, the positioning part is provided with a guide structure, which is used to guide the positioning part to be inserted into the second through hole.

[0012] Furthermore, the hardness of the matrix is ​​65-70 Shore hardness.

[0013] Furthermore, the matrix is ​​made of one of the following: urethane, fluororubber, and POM.

[0014] Compared with the prior art, this utility model has the following advantages: (1) The wiping head of this utility model, through the first wiping part and the second wiping part set on the base, enables the first wiping part to wipe the side wall and step surface of the first through hole of the injection hole, and the second wiping part to wipe the circumferential area of ​​the outer side of the battery located in the injection hole. This not only cleans the edge of the step of the injection hole better, but also cleans the outside of the injection hole, i.e. the outer side of the battery. Thus, the electrolyte remaining in the injection hole can be cleaned better, thereby improving the cleaning effect of the injection hole, which is conducive to ensuring the welding quality of the subsequent sealing nail, and has a good use effect.

[0015] (2) The protrusions set on the substrate can provide a basis for the arrangement of the first wiping part. The first wiping part adopts multiple first ribs, which are radially arranged with the axis of the substrate as the center. In this way, when the wiping head rotates, the first ribs can press the wiping material to wipe the side wall and step surface of the first through hole. This can ensure that the wiping material, such as non-woven fabric, will not be completely deformed. Moreover, the gap formed between two adjacent first ribs can allow the electrolysis at the injection hole to crystallize and accumulate in this gap. With the adsorption of the wiping material, the side wall and step surface of the first through hole can be cleaned.

[0016] (3) In the direction of liquid injection, the sum of the size of the first rib and the thickness of the wiping material is consistent with the size of the first through hole, which can further ensure the wiping effect of the first rib on the side wall and step surface of the first through hole.

[0017] (4) The second wiping part adopts multiple second ribs arranged circumferentially along the boss. This facilitates the molding and preparation process, and can effectively wipe the circumferential area of ​​the liquid injection hole on the outer side of the battery. At the same time, the wiping in conjunction with the first rib can further improve the wiping effect of the stepped liquid injection hole and its outer area, and can further ensure the welding quality of the subsequent sealing nail.

[0018] (5) On the cross-section of the substrate, the second rib is staggered with the first rib. This is conducive to the wiping material being subjected to balanced force at multiple points, which can further prevent the non-woven fabric from being stretched and deformed, thereby allowing for better wiping of the injection holes and improving the cleanliness of the wiping.

[0019] (6) By setting the positioning part on the base, the base as a whole and the first wiping part can be positioned well when the base rotates, so as to ensure that the first wiping part can wipe the side wall step surface of the first through hole well.

[0020] (7) The setting of the guide structure is conducive to guiding the positioning part to be inserted into the second through hole, and facilitates the rapid positioning of the positioning part in the second through hole.

[0021] (8) The hardness of the matrix is ​​in the range of 65-70 Shore hardness, which causes the first wiping part and the second wiping part to be deformed under pressure. The scraping effect of the first wiping part and the second wiping part can be improved by utilizing the scraping effect of the first wiping part and the second wiping part.

[0022] (9) The substrate is made of urethane, fluororubber or POM, which has good corrosion resistance and elastic deformation ability. During the wiping process of the injection hole, the first wiping part and the second wiping part can undergo elastic deformation when squeezed, which can better fit the edge, gap and dead corner of the wiping part, thus helping to ensure a more thorough wiping effect of the injection hole.

[0023] This utility model also proposes a liquid injection hole wiping device, wherein the liquid injection hole wiping device is provided with a wiping head as described above.

[0024] The liquid injection hole wiping device of this utility model, by using the above-mentioned wiping head, can not only clean the edge of the liquid injection hole step well, but also clean the outside of the liquid injection hole, that is, the outer surface of the battery. This can effectively remove the electrolytic residues remaining in the liquid injection hole, thereby improving the cleaning effect of the liquid injection hole and ensuring the welding quality of the subsequent sealing nail. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a first-view structural schematic diagram of the wiping head according to an embodiment of the present invention; Figure 2 This is a second-view structural schematic diagram of the wiping head described in an embodiment of the present invention; Figure 3 This is a third-view structural schematic diagram of the wiping head according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the wiping head and the injection hole in the embodiment of the present invention. Figure 5 This is a schematic diagram of the injection hole structure according to an embodiment of the present invention; Explanation of reference numerals in the attached figures: 1. Matrix; 2. Rod; 101. Boss; 102. First rib; 103. Second rib; 104. Positioning part; 1041. Guide structure; 10. First gap; 20. Second gap; 100, Injection hole; 1000, Cover plate; 1001, First through hole; 1002, Second through hole; 1003, Outer surface; 10011, Side wall; 10012, Stepped surface. Detailed Implementation

[0026] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Furthermore, in the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0030] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0032] An embodiment of the first aspect of this utility model provides a wiping head for wiping the electrolyte filling holes on a battery, and by optimizing the structure of the wiping head, the cleaning effect of the electrolyte filling holes can be improved.

[0033] During battery manufacturing, electrolyte needs to be injected into the battery through the injection hole on the top cover. After the electrolyte injection is completed, electrolyte residue remains in the injection hole. This electrolyte will crystallize when exposed to air, blocking the injection hole and affecting the subsequent sealing of the battery. Therefore, it is necessary to wipe the electrolyte off the injection hole to prevent residual electrolyte from crystallizing and causing welding defects during battery sealing.

[0034] In existing technologies, the industry commonly uses a multi-step cylindrical wiping head design. Its working principle involves pressing wiping material, such as non-woven fabric, against the inner wall of the injection hole using axial pressure, and then performing wiping in conjunction with rotational motion. However, when this type of wiping head presses down on the non-woven fabric, it causes the fabric to stretch and deform. This results in insufficient adhesion between the non-woven fabric and the edge of the injection hole steps during wiping, making complete cleaning difficult. Consequently, electrolyte crystallization easily forms at the edge of the injection hole steps, and this residual electrolyte crystallization severely affects the welding quality of the sealing nails.

[0035] In view of this, in order to overcome the shortcomings of the prior art, the wiping head of this embodiment combines... Figures 1 to 5As shown, the overall structure includes a substrate 1, which includes a first wiping part and a second wiping part.

[0036] The injection hole 100 is a stepped hole with a first through hole 1001 and a second through hole 1002. Along the injection direction, the diameter of the first through hole 1001 is larger than the diameter of the second through hole 1002. The sidewalls 10011 of the first through hole 1001 and the second through hole 1002 are connected by a stepped surface 10012. A first wiping part protrudes outward relative to a second wiping part, and the first wiping part is used to wipe the sidewalls 10011 and the stepped surface 10012 of the first through hole 1001. The second wiping part is used to wipe the circumferential area of ​​the injection hole 100 on the outer surface 1003 of the battery. Therefore, by using the first wiping part and the second wiping part provided on the substrate 1, the first wiping part can wipe the side wall 10011 and the stepped surface 10012 of the first through hole 1001 of the injection hole 100, and the second wiping part can wipe the circumferential area of ​​the outer side 1003 of the battery located in the injection hole 100. This not only cleans the electrolyte remaining at the edge of the step of the injection hole 100, but also cleans the electrolyte remaining on the outside of the injection hole 100, i.e., the outer side 1003 of the battery, thereby improving the cleaning effect of the injection hole 100 and ensuring the welding quality of the subsequent sealing nail.

[0037] Based on the above overview, specifically, refer to Figure 5 and join Figure 4 As shown, the injection hole 100 is typically located on the battery cover 1000. Structurally, the injection hole 100 is a stepped hole that extends through the thickness of the cover 1000 and has a first through hole 1001 and a second through hole 1002. Along the injection direction, i.e., the direction from the outer side of the battery to the inner side, the diameter of the first through hole 1001 is larger than the diameter of the second through hole 1002, and the sidewalls 10011 of the first through hole 1001 and the second through hole 1002 are connected by a stepped surface 10012.

[0038] When cleaning the injection hole 100, wiping material is sandwiched between the first wiping part and the hole wall of the injection hole 100, and between the second wiping part and the outer surface 1003 of the battery. Thus, when the wiping head rotates, that is, when the base 1 rotates, the first wiping part can wipe the side wall 10011 and the stepped surface 10012 of the first through hole 1001, and the second wiping part can wipe the circumferential area on the outer surface 1003 of the battery located at the injection hole 100.

[0039] The wiping materials mentioned above can be, for example, non-woven fabric, sponge, or absorbent paper. In this embodiment, non-woven fabric will be used as an example for explanation. Based on the shape of the injection hole 100, the first wiping part and the second wiping part are located on different planes of the substrate 1.

[0040] Continue to combine Figures 1 to 5 As shown, in some exemplary embodiments, the wiping head includes a base 1 with a boss 101 at one end. A rod 2 is fixedly connected to the other end of the base 1 relative to the end with the boss 101. A first wiping portion is disposed on the boss 101, which provides a base for its arrangement. The rod 2 is connected to the power output end of a rotating device, so that under the drive of the rotating device, the rod 2 and the base 1 rotate together, causing the second wiping portion of the first wiping portion to rotate, thereby wiping the injection hole 100.

[0041] It is worth noting that the base 1 and the rod 2 can be molded into one piece using injection molding, or they can be two separate parts that are then fixed together by screwing or bonding. Alternatively, the base 1 can be made longer, and the end of the base 1 furthest from the boss 101 can be directly connected to the power output end of the rotating device. All of these configurations are feasible.

[0042] Specifically, for example, the first wiping part includes a plurality of first ribs 102 formed on the boss 101, and the plurality of first ribs 102 are arranged radially with the axis of the base 1 as the center. In this way, when the wiping head rotates, the first ribs 102 press the wiping material to wipe the side wall 10011 and the stepped surface 10012 of the first through hole 1001. This can ensure that the wiping material, such as non-woven fabric, will not be completely deformed. Moreover, the first gap 10 formed between two adjacent first ribs 102 can allow the electrolyte crystals at the injection hole 100 to accumulate in the first gap 10. With the adsorption effect of the wiping material, the side wall 10011 and the stepped surface 10012 of the first through hole 1001 can be cleaned.

[0043] In specific implementation, for example, the first rib 102 can be four radiating from the axis of the base 1, for example, in a "+" or "X" shape. This structure is simple and easy to manufacture. Of course, it is understood that the number of the first rib 102 can be two, three, five, six or any other number in addition to four. This embodiment does not limit this.

[0044] Combination Figures 1 to 4As shown in, in some exemplary embodiments, along the injection direction, the sum of the dimension of the first rib 102 and the thickness of the wiping material is consistent with the dimension of the first through hole 1001. This arrangement enables the first rib 102 to make the wiping material, such as non-woven fabric, better fit against the hole wall and step surface 10012 of the first through hole 1001, further ensuring the wiping effect of the first rib 102 on the side wall 10011 and step surface 10012 of the first through hole 1001. Meanwhile, it can also prevent the problem that the excessive dimension of the first rib 102 affects the fitting of the second wiping portion to the outer side surface 1003 of the battery, and the undersized dimension of the first rib 102 results in partial areas not being wiped, which affects the wiping effect.

[0045] Continuing with reference to Figures 1 to 4 As shown in, in some exemplary embodiments, the second wiping portion comprises a plurality of second ribs 103 arranged on the circumference of the boss 101, and the plurality of second ribs 103 are arranged at intervals along the circumference of the boss 101. The plurality of second ribs 103 are arranged at intervals along the circumference of the boss 101, so that the second ribs 103 and the boss 101 are integrally formed, which is beneficial for forming and preparation. Moreover, a second gap 20 formed between two adjacent second ribs 103 allows electrolyte and crystals on the outer side surface of the battery around the injection hole 100 to accumulate in the second gap, and by virtue of the adsorption effect of the wiping material, the area around the injection hole 100 on the outer side surface of the battery can be cleaned thoroughly. Meanwhile, the plurality of second ribs 103 can well wipe the circumferential area of the injection hole 100 on the outer side surface 1003 of the battery under rotational movement, and in cooperation with the wiping of the first rib 102, the wiping effect on the stepped injection hole 100 and the outer area thereof can be further improved, thereby further ensuring the welding quality of the subsequent sealing nail.

[0046] In specific implementation, there are four second ribs 103 arranged at intervals along the circumference of the boss 101, and every two of the four second ribs 103 are perpendicular to each other in a "cross" shape. It can be understood herein that the four second ribs 103 can also be arranged in an "X" shape. Of course, in terms of the arrangement quantity, besides four, they can also be arranged as two, three, five or any other number.

[0047] Still with reference to Figures 1 to 4 As shown in, in some exemplary embodiments, on the cross-section of the base body 1, the second ribs 103 and the first ribs 102 are arranged in a staggered manner. Such arrangement is beneficial for the wiping material to be stressed in a multi-point balanced manner, which can further prevent the non-woven fabric from being stretched and integrally deformed, so that the injection hole 100 can be wiped better and the wiping cleanliness can be improved. Moreover, in specific implementation, for example, four first ribs 102 arranged in a "cross" shape and four second ribs 103 arranged in a "cross" shape are arranged in a "star" shape on the cross-section of the base body 1.

[0048] Combined Figures 1 to 4 As shown, in some exemplary embodiments, the substrate 1 further includes a positioning part 104 connected to the first wiping part, which can be positioned in the second through hole 1002. The positioning part 104, provided on the substrate 1, can effectively position the substrate 1 as a whole and the first wiping part when the substrate 1 rotates, ensuring that the first wiping part can effectively wipe the stepped surface 10012 of the sidewall 10011 of the first through hole 1001.

[0049] Specifically, the positioning part 104 includes, for example, a column formed at the center of the four first ribs 102. The diameter of the column is slightly smaller than the diameter of the second through hole 1002, for example, the diameter of the column is 0.3mm-0.5mm smaller than the diameter of the second through hole 1002. In this way, when the main body presses down on the non-woven fabric, it can be smoothly inserted into the first through hole 1001, and the non-woven fabric can better fit the hole wall of the first through hole 1001 and the edge of the stepped surface 10012, thereby facilitating the wiping effect on the edge of the stepped surface 10012.

[0050] Refer to Figure 2 As shown, in some exemplary embodiments, the positioning part 104 is provided with a guide structure 1041, which guides the positioning part 104 into the second through hole 1002. The guide structure 1041 facilitates the insertion of the positioning part 104 into the second through hole 1002, thus promoting rapid positioning of the positioning part 104 within the second through hole 1002. In specific implementations, the guide structure 1041 includes a rounded corner formed on the end of the column. This rounded corner guides the positioning part 104 into the second through hole 1002, and the arc surface also helps to prevent the lint cloth from being punctured during wiping.

[0051] In this embodiment, in some exemplary implementations, the hardness of the substrate 1 is between 65 and 70 Shore A. That is, the hardness of the first rib 102 and the second rib 103 is in the range of 65-70 Shore A. In this way, during the wiping process, the first rib 102 and the second rib 103 are deformed under pressure, and the scraping effect of the edges of the first rib 102 and the second rib 103 is utilized to improve the wiping effect of the injection hole 100.

[0052] Furthermore, in some exemplary embodiments, the substrate 1 of this embodiment is made of one of urethane, fluororubber, and POM. These materials have good corrosion resistance and elastic deformation ability. During the wiping process of the injection hole 100, the first wiping part and the second wiping part can undergo elastic deformation when squeezed, which better fits the edges, gaps and dead corners of the wiping part, thus helping to ensure a more thorough wiping effect of the injection hole 100.

[0053] It is worth noting that, for the wiping head of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it still consists of Figures 1 to 5 shown in, which comprises a base body 1. The base body 1 comprises a first wiping portion and a second wiping portion, wherein the first wiping portion is arranged to protrude outward relative to the second wiping portion. A boss 101 is formed at one end of the base body 1, the first wiping portion is arranged on the boss 101, and the first wiping portion comprises a plurality of first convex ribs 102 formed on the boss 101, and the plurality of first convex ribs 102 are four radially arranged with the axis of the base body 1 as the center. The second wiping portion comprises four second convex ribs 103 formed in the circumferential direction of the boss 101. The plurality of first convex ribs 102 and the plurality of second convex ribs 103 are all arranged in a cross shape.

[0054] Wherein, along the liquid injection direction, the sum of the dimension of the first convex rib 102 and the thickness of the wiping material is consistent with the dimension of the first through hole 1001. Moreover, on the cross section of the base body 1, the second convex ribs 103 and the first convex ribs 102 are arranged in a staggered manner to form a meter shape.

[0055] Wherein, the base body 1 further comprises a positioning portion 104 connected to the first wiping portion, and the positioning portion 104 can be positioned in the second through hole 1002. Moreover, the positioning portion 104 is provided with a guiding structure 1041 for guiding the positioning portion 104 to be inserted into the second through hole 1002, and the guiding structure 1041 comprises a rounded corner formed on the end face of the positioning portion 104.

[0056] Wherein, the hardness of the base body 1 is 65-70 Shore hardness, and the base body 1 is made of one of urethane rubber, fluororubber and POM.

[0057] In the above preferred embodiment, for the arrangement of the first wiping portion and its structure, the arrangement of the second wiping portion and its structure, as well as the number and arrangement of the first convex ribs 102 and the second convex ribs 103, reference can still be made to the records in the above exemplary embodiments, and in this preferred embodiment, for the arrangement of the first wiping portion and its structure, the arrangement of the second wiping portion and its structure, as well as the number and arrangement of the first convex ribs 102 and the second convex ribs 103, based on the beneficial effects brought by the design thereof, reference can also be made to the records in the above exemplary embodiments.

[0058] The wiping head of this embodiment adopts the above design, which can not only achieve good cleaning of the step edge of the liquid injection hole 100, but also achieve good cleaning of the outside of the liquid injection hole 100, that is, the outer side surface 1003 of the battery. Therefore, the electrolyte remaining at the liquid injection hole 100 can be well cleaned, thereby improving the cleaning effect of the liquid injection hole 100, facilitating ensuring the subsequent welding quality of the sealing nail, and has a good use effect.

[0059] A second aspect of this utility model provides a wiping device for an injection hole 100, which includes a wiping head as described above.

[0060] In a specific implementation, the wiping device for the injection hole 100 may include a rotating device, and the wiping head is connected to the power output end of the rotating device. This allows the wiping head to be driven by the rotating device, causing it to rotate while pressing against the non-woven fabric, thereby wiping the injection hole 100.

[0061] The wiping device for the injection hole 100 in this embodiment, by using the wiping head described above, can not only clean the stepped edge of the injection hole 100 well, but also clean the outside of the injection hole 100, i.e., the outer surface 1003 of the battery, so as to effectively clean the electrolyte remaining at the injection hole 100, thereby improving the cleaning effect of the injection hole 100 and ensuring the welding quality of the subsequent sealing nail.

[0062] The above descriptions are merely some embodiments of this utility model and are not intended to limit the utility model. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A wiping head for wiping the electrolyte filling holes on a battery, characterized in that: The wiping head includes a base, and the base includes a first wiping part and a second wiping part; The injection hole is a stepped hole and has a first through hole and a second through hole. Along the injection direction, the diameter of the first through hole is larger than the diameter of the second through hole. The sidewalls of the first through hole and the sidewalls of the second through hole are connected by a stepped surface. The first wiping part protrudes outward relative to the second wiping part, and the first wiping part is used to wipe the side wall of the first through hole and the stepped surface, while the second wiping part is used to wipe the circumferential area of ​​the injection hole on the outer side of the battery.

2. The wiping head according to claim 1, characterized in that: One end of the substrate has a boss; The first wiping part includes a plurality of first ribs disposed on the protrusion, and the plurality of first ribs are arranged radially with the axis of the substrate as the center.

3. The wiping head according to claim 2, characterized in that: Along the injection direction, the sum of the size of the first rib and the thickness of the wiping material is the same as the size of the first through hole.

4. The wiping head according to claim 2, characterized in that: The second wiping part includes a second rib disposed in the circumferential direction of the boss, and the second rib is a plurality of ribs arranged at intervals along the circumferential direction of the boss.

5. The wiping head according to claim 4, characterized in that: On the cross-section of the substrate, the second rib is staggered from the first rib.

6. The wiping head according to claim 1, characterized in that: The substrate also includes a positioning part connected to the first wiping part, which can be positioned in the second through hole.

7. The wiping head according to claim 6, characterized in that: The positioning part is provided with a guide structure, which is used to guide the positioning part to be inserted into the second through hole.

8. The wiping head according to any one of claims 1 to 7, characterized in that: The hardness of the matrix is ​​65-70 Shore A.

9. The wiping head according to any one of claims 1 to 7, characterized in that: The matrix is ​​made of one of the following: urethane, fluororubber, or POM.

10. A device for wiping an injection hole, characterized in that: The liquid injection hole wiping device is provided with a wiping head as described in any one of claims 1 to 9.

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