Bearing piece and battery cleaning method

Abstract

The embodiment of the invention provides a bearing piece and a battery cleaning method, and the bearing piece comprises a clamping part which is used for being clamped on the surface of a top cover at a battery liquid injection port; the liquid injection groove is formed in one side of the clamping part, and the liquid injection groove is used for being nested with a liquid injection nozzle during liquid injection of the battery or a negative pressure suction nozzle during formation; the inserting part is arranged on the side, away from the liquid injection groove, of the clamping part and protrudes out of the clamping part, the inserting part is used for being inserted into a liquid injection hole in the liquid injection opening, and a first through hole communicated with the liquid injection groove is formed in the inserting part in a penetrating mode. During liquid injection and formation, the bearing piece is assembled at the liquid injection opening of the battery, so that the liquid injection opening or the negative pressure suction nozzle is prevented from being in direct contact with the top cover in the liquid injection or formation process, the effect that no electrolyte or crystal residues of the electrolyte are left at the liquid injection opening and the top cover area near the liquid injection opening can be achieved, and the quality of the battery is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a supporting member and a battery cleaning method. Background Art

[0002] At present, with the increasing shortage of energy and the continuous improvement of environmental protection requirements, lithium-ion batteries are becoming more and more widely used due to their excellent properties.

[0003] The manufacturing of secondary batteries such as lithium-ion batteries generally requires processes such as liquid injection, formation, and sealing pin welding. Among them, the liquid injection and formation processes are likely to cause electrolyte and crystal residues in and around the liquid injection port, which has a serious impact on the subsequent processing quality, appearance quality, and even safety performance, such as pollution, corrosion, and the formation of pores and explosion points in the sealing pin welding. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a supporting member and a battery cleaning method to solve the problem that electrolyte and crystal residues are easily left at the injection port and around the injection port during injection and formation of existing secondary batteries, thus affecting the battery quality.

[0005] In order to solve the above problems, the present application is implemented through the following technical solutions:

[0006] The present application proposes a supporting member, which includes:

[0007] A clamping portion, used for clamping on the top cover surface at the battery filling port;

[0008] A liquid injection groove, arranged on one side of the clamping portion, the liquid injection groove is used to be nested with a liquid injection nozzle during battery injection or a negative pressure suction nozzle during formation;

[0009] The plug-in part is arranged on a side of the clamping part away from the injection groove and protrudes from the clamping part. The plug-in part is used to be plugged into the injection hole in the injection port. A first through hole communicating with the injection groove is penetrated in the plug-in part.

[0010] Furthermore, in the supporting member, the clamping portion includes a boss extending from the inside to the outside and a first platform, the boss is used to sink into the filling port, the first platform is clamped on the top cover surface at the battery filling port, and a second through hole is provided in the boss, and the second through hole is connected to the filling groove and the first through hole.

[0011] Furthermore, in the supporting member, the second through hole is aligned and connected with the first through hole.

[0012] Furthermore, in the supporting member, the first through hole penetrates the plug-in portion along a direction perpendicular to the first platform.

[0013] Furthermore, in the supporting member, the first platform is perpendicular to the boss.

[0014] Furthermore, in the supporting member, the plug-in portion includes a second platform disposed at the bottom of the boss, and a protrusion disposed on a side of the second platform away from the boss, and the first through hole penetrates the second platform and the protrusion.

[0015] Furthermore, in the supporting member, the side surface of the boss is adapted to the liquid injection port;

[0016] And / or the protrusion is adapted to the liquid injection hole.

[0017] Furthermore, in the supporting member, the second platform is fitted on the bottom of the boss through interference fit between a cylinder and a hole.

[0018] Furthermore, in the supporting member, the surface of the boss facing the second platform has a multi-layered annular structure or a striped structure; and / or

[0019] The material of the clamping part is one or more of aluminum alloy, stainless steel, Teflon, polypropylene, polyvinylidene fluoride and EPDM rubber; and / or

[0020] The material of the plug-in part is EPDM rubber.

[0021] The present application also proposes a battery cleaning method using the above-mentioned supporting member, which comprises:

[0022] Before the battery is filled with liquid, the supporting member is installed into the liquid filling port of the battery, and the plug-in portion is plugged into the liquid filling hole in the liquid filling port;

[0023] After the plug-in portion is plugged into the injection hole in the injection port, the injection nozzle is nested in the injection groove to inject liquid;

[0024] After the battery is filled with liquid, the negative pressure nozzle is nested in the liquid filling tank and the battery is formed;

[0025] After formation, the support member is taken out from the liquid injection port; or after formation and re-injection, the support member is taken out from the liquid injection port.

[0026] Compared with the prior art, the embodiments of the present application have the following advantages:

[0027] In an embodiment of the present application, the supporting member provided includes: a clamping portion, which is used to clamp the surface of the top cover at the battery filling port; a filling groove, which is arranged on one side of the clamping portion, and the filling groove is used to be nested with the filling nozzle during battery filling or the negative pressure suction nozzle during formation; a plug-in portion, which is arranged on the side of the clamping portion away from the filling groove and protrudes from the clamping portion, and the plug-in portion is used to be plugged into the filling hole in the filling port, and a first through hole connected to the filling groove is penetrated in the plug-in portion; wherein, by assembling the supporting member at the battery filling port during filling and formation, the filling nozzle or the negative pressure suction nozzle is avoided from directly contacting the top cover during the filling or formation process, and the effect of no electrolyte or its crystal residue in the filling port and the top cover area near the filling port can be achieved, thereby effectively improving the battery quality.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is one of the cross-sectional views of the supporting member provided in the embodiment of the present application;

[0030] Figure 2 It is one of the top views of the supporting member provided in the embodiment of the present application;

[0031] Figure 3 This is the second cross-sectional view of the supporting member provided in the embodiment of the present application;

[0032] Figure 4 This is the second top view of the supporting member provided in the embodiment of the present application;

[0033] Figure 5 is a cross-sectional view of the top cover in an embodiment of the present application;

[0034] Figure 6 is a top view of the top cover in the embodiment of the present application;

[0035] Figure 7 is a schematic diagram of the combination of the supporting member and the top cover in the embodiment of the present application;

[0036] Figure 8 It is a flow chart of the battery cleaning method provided in the embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] At present, the manufacturing of secondary batteries such as lithium-ion batteries generally requires processes such as liquid injection, formation, and sealing pin welding. Among them, the liquid injection and formation processes are likely to cause electrolyte and crystal residues in and around the liquid injection port, which has a serious impact on the subsequent processing quality, appearance quality, and even safety performance, such as pollution, corrosion, and the generation of pores and explosion points in the sealing pin welding.

[0039] In order to prevent the electrolyte and crystallization at the injection port from having a series of adverse effects on the process and the product, in the prior art, they can be removed by manual wiping, automatic cleaning or adhesive film before sealing pin welding, testing, and encapsulation.

[0040] Among them, manual wiping has problems such as low efficiency, poor stability, and harm to personnel health; the automatic wiping and cleaning method requires the use of certain mechanisms or auxiliary materials for wiping, blowing, adsorption, or a combination of several schemes, and has problems such as relatively complex structure, high cost of consumables, and not conducive to later maintenance; although the method of sticking adhesive film can avoid electrolyte and crystal residue to a certain extent, this method has high requirements on the sticking effect, and it is easy for the inside of the liquid injection port to be difficult to stick evenly and flat, resulting in electrolyte entry or poor air tightness, which in turn affects the effects of the liquid injection and formation process. In addition, this method has the problem of residual glue after tearing off the film.

[0041] In view of the above problems, the present application provides a supporting member 10, such as Figures 1 to 4 and Figure 7 As shown, it includes: a clamping part 11, which is used to clamp the surface of the top cover 20 at the battery filling port 21; a filling groove 12, which is arranged on one side of the clamping part 11, and the filling groove 12 is used to be nested with the filling nozzle during battery filling or the negative pressure suction nozzle during formation; a plug-in part 13, which is arranged on the side of the clamping part 11 away from the filling groove 12 and protrudes from the clamping part 11, and the plug-in part 13 is used to be plugged into the filling hole 22 in the filling port 21, and a first through hole 14 is provided in the plug-in part 13 to communicate with the filling groove 12. Figures 5-6 As shown, the liquid injection port 21 is opened on the top cover 20, and the liquid injection hole 22 is a through hole located in the middle of the liquid injection port 21, which connects the liquid injection port 21 with the interior of the battery.

[0042] In the embodiment of the present application, the supporting member 10 can be used for filling and forming secondary batteries such as lithium-ion batteries and sodium-ion batteries.

[0043] Among them, because when the supporting member 10 is assembled at the battery filling port 21 during liquid injection and formation, the plug-in portion 13 can be plugged into the filling hole 22 in the filling port 21, and the clamping portion 11 can be clamped on the surface of the top cover 20 at the battery filling port 21, the filling groove 12 can be nested with the filling nozzle during battery filling or the negative pressure suction nozzle during formation, and a first through hole 14 that is conductive to the filling groove 12 is penetrated by the plug-in portion 13, so that when liquid is injected, the electrolyte flows out of the filling nozzle and directly enters the battery through the filling groove 12 and the first through hole 14, avoiding the direct contact between the filling nozzle or the negative pressure suction nozzle and the top cover 20 during the injection or formation process, and can achieve the effect of no electrolyte or its crystal residue in the filling port 21 and the top cover 20 area near the filling port 21, thereby effectively improving the battery quality.

[0044] Optionally, in one embodiment, the clamping portion 11 includes a boss 111 extending from the inside to the outside and a first platform 112, the boss 111 is used to sink into the liquid filling port 21 of the battery, the first platform 112 is used to clamp on the surface of the top cover 20 at the liquid filling port 21 of the battery, and a second through hole 15 is provided in the boss 111, and the second through hole 15 is connected to the liquid filling groove 12 and the first through hole 14.

[0045] Among them, because the boss 111 can be sunk into the liquid injection port 21 of the battery, and the plug-in portion 13 is arranged on the side of the holding portion 11 away from the liquid injection groove 12, specifically, it is arranged on the side of the boss 111 away from the liquid injection groove 12, so that the plug-in portion 13 can also be smoothly inserted into the liquid injection port 21; at the same time, because the second through hole 15 is connected to the liquid injection groove 12 and the first through hole 14, the first through hole 14 is also connected to the liquid injection groove 12, so when the liquid injection groove 12 and the liquid injection nozzle of the battery are nested, the electrolyte flows out of the liquid injection nozzle during injection. The liquid directly enters the interior of the battery through the liquid injection groove 12, the second through hole 15 and the first through hole 14, thereby avoiding the direct contact between the liquid injection nozzle and the top cover 20 during the liquid injection process, and effectively preventing the electrolyte from contaminating the top cover 20; and when the liquid injection groove 12 and the negative pressure suction nozzle during battery formation are nested, the gas produced and excess electrolyte directly enter the negative pressure suction nozzle through the first through hole 14, the second through hole 15 and the liquid injection groove 12, and then is discharged from the battery, thereby avoiding the direct contact between the negative pressure suction nozzle and the top cover 20 during the formation process, and effectively preventing the electrolyte from contaminating the top cover 20.

[0046] Among them, the first platform 112 is a planar structure that connects the negative pressure suction nozzle and the supporting member 10 during formation, which can effectively prevent the electrolyte from contaminating the top cover 20. Optionally, the first platform 112 is circular, square or irregular in shape, and its size is larger than the injection nozzle, the negative pressure suction nozzle and the injection port 21, so as to be tightly nested with the injection nozzle during battery injection or the negative pressure suction nozzle during formation. In a specific embodiment, the first platform 112 is a circular structure, and its thickness is greater than 0.1mm, specifically 0.1~2mm, and its diameter ranges from 7 to 30mm, ensuring that the negative pressure suction nozzle during formation can be fully contacted during formation, so as not to affect the negative pressure effect during the formation process, and to achieve the effect of preventing the electrolyte from contaminating the cover plate.

[0047] Optionally, in one embodiment, the second through hole 15 is aligned and connected with the first through hole 14, for example, they may be concentric structures, and the two together form a channel for the electrolyte to enter the battery during injection or a gas exhaust channel.

[0048] Optionally, in one embodiment, the side of the boss 111 is adapted to the injection port 21, so that the boss 111 can be nested inside the injection port 21, thereby isolating the injection nozzle from contacting the inner wall of the injection port 21. Optionally, the boss 111 can be a cylindrical structure or a conical structure, which can better contact the inner wall of the injection port 21. Among them, the diameter of the boss 111 is slightly smaller than the diameter of the injection port 21, which can prevent electrolyte or rubber contamination and facilitate the removal of the support member 10; optionally, in a specific embodiment, the diameter of the boss 111 ranges from 6 to 10 mm, and the depth ranges from 2 to 10 mm.

[0049] Optionally, in one embodiment, the first platform 112 is perpendicular to the boss 111 , specifically, the side of the first platform 112 facing the boss 111 is perpendicular to the side of the boss 111 , so as to facilitate the support member 10 to be inserted into the liquid injection port 21 or to be pulled out from the liquid injection port 21 .

[0050] Optionally, in one embodiment, the above-mentioned plug-in portion 13 is adapted to the injection hole 22, specifically, the outer wall of the plug-in portion 13 is adapted to the injection hole 22, so that the plug-in portion 13 can be nested with the side wall of the injection hole 22, thereby isolating the injection nozzle from contacting the inner wall of the injection hole 22. In addition, since the injection hole 22 is a through hole located in the middle of the injection port 21, it connects the injection port 21 with the inside of the battery, and the first through hole 14 is provided through the plug-in portion 13, and the plug-in portion 13 is adapted to the injection hole 22, when the plug-in portion 13 is plugged into the injection hole 22, the first through hole 14 can be better isolated from the injection hole 22, so as to prevent the electrolyte flowing out of the first through hole 14 from contacting the side wall of the injection hole 22, thereby causing contamination of the injection hole 22.

[0051] Optionally, in one embodiment, the above-mentioned plug-in portion 13 includes a second platform 131 arranged at the bottom of the boss 111, and a protrusion 132 arranged on the side of the second platform 131 away from the boss 111, that is, the above-mentioned plug-in portion 13 is formed by the second platform 131 and the protrusion 132, and the protrusion 132 is used to be inserted into the injection hole 22, and the first through hole 14 passes through the second platform 131 and the protrusion 132, so that the interior of the battery is directly connected to the injection nozzle or the negative pressure suction nozzle through the injection groove 12, the second through hole 15 and the first through hole 14.

[0052] Optionally, the first through hole 14 passes through the plug-in portion 13 in a direction perpendicular to the first platform 112, so that the gas-liquid transmission path is shorter, facilitating the inflow of electrolyte during battery filling and the outflow of gas-liquid during formation, thereby speeding up the process and saving process time.

[0053] Optionally, the second platform 131 is arranged parallel to the first platform 112, and the second platform 131 is perpendicular to the boss 111, specifically, the side of the second platform 131 facing the protrusion 132 is perpendicular to the side of the protrusion 132, so as to facilitate the protrusion 132 to be inserted into the injection hole 22 or pulled out from the injection hole 22.

[0054] In the embodiment of the present application, the second platform 131 is a contact platform between the bottom of the support member 10 and the bottom of the injection port 21, which plays an isolation and sealing role. Optionally, in one embodiment, the second platform 131 can be a circular planar structure with a diameter ranging from 6 to 10 mm and a thickness of 0.1 mm to 1 mm.

[0055] Optionally, in one embodiment, the second platform 131 is integrated with the boss 111 to ensure the overall structural strength of the supporting member 10 and prevent the plug-in portion 13 from being separated or falling off from the clamping portion 11 due to frequent plugging and unplugging.

[0056] Optionally, in one embodiment, Figures 3-4 As shown, the second platform 131 is assembled at the bottom of the boss 111 through the interference fit of the cylinder and the hole, which is convenient for disassembly and replacement of the plug-in portion 13 when it is damaged due to electrolyte corrosion or other reasons. Optionally, in a specific embodiment, an assembly hole 16 is provided at the bottom of the boss 111, and an assembly column 17 facing the boss 111 is provided on the second platform 131, so that the second platform 111 is assembled at the bottom of the boss 111 through the interference fit of the assembly hole 16 and the assembly column 17.

[0057] Optionally, in one embodiment, the surface of the boss 111 facing the second platform 131 has a multi-layer annular structure or a striped structure to enhance the sealing effect between the boss 111 and the second platform 131, achieve sealing and support, and prevent the electrolyte from entering the injection port 21 and causing residue.

[0058] Optionally, the material of the clamping portion 11 is aluminum alloy, stainless steel, Teflon, polypropylene (PP), polyvinylidene fluoride (PVDF) or EPDM rubber.

[0059] Optionally, the material of the plug-in part 13 is EPDM rubber, which not only has low density and high filling capacity, but also has outstanding aging resistance, corrosion resistance, electrical insulation performance and ozone resistance, so that the plug-in part 13 does not need to be replaced frequently, and the supporting part 10 is prevented from causing pollution to the inside of the battery.

[0060] In practical applications, it is necessary to assemble the above-mentioned supporting member 10 at the injection port 21 before the battery is injected, and then the processes of primary injection, infiltration, formation, aging, secondary injection, recovery of the supporting member 10, and welding of sealing pins are carried out in sequence. Among them, the specific operation process of assembling and recovering the supporting member 10 includes: before injection, the supporting member 10 is installed in the injection port 21, ensuring that the first through hole 14 is inserted into the injection hole 22, and the lower plane of the boss 111 is flatly fitted with the bottom surface of the injection port 21. During injection, the injection nozzle is inserted into the injection tank 12 and fits well with the injection tank 12. The electrolyte enters the battery through the injection hole 22, the second through hole 15 and the channel constructed by the second through hole 15. During formation, the negative pressure suction nozzle is flatly fitted with the supporting member 10, and the electrolyte or crystals will remain in the supporting member 10 instead of the injection port 21 and its surroundings; when recovering the supporting member 10, the supporting member 10 is removed and cleaned with alcohol for subsequent reuse.

[0061] It should be noted that the top cover 20 or cover plate applicable in the embodiment of the present application only provides one of the application scenarios and should not be constrained or limited. The applicable scenario should be regarded as a similar structure that realizes liquid injection or formation through the liquid injection port 21, not limited to square batteries, cylindrical batteries, etc.

[0062] In summary, the supporting member 10 provided in the embodiment of the present application can avoid electrolyte or crystal residue in the process of lithium battery and the like, is easy to automate, convenient to maintain, and reusable, thereby reducing production costs and improving processing and appearance quality.

[0063] In order to solve the above problems, the present application embodiment also provides a battery cleaning method based on the above supporting member 10, such as Figure 8 As shown, the cleaning method includes steps 101 to 104.

[0064] Step 101: Before the battery is filled with liquid, the supporting member is installed into the liquid filling port of the battery, and the plug-in portion is plugged into the liquid filling hole in the liquid filling port.

[0065] In this step, because the holding portion of the supporting member can be held on the top cover surface at the battery filling port, and the plug-in portion is arranged on the side of the holding portion away from the filling groove and protrudes from the holding portion, the plug-in portion can be plugged into the filling hole in the filling port.

[0066] Step 102: After the plug-in portion is plugged into the liquid injection hole in the liquid injection port, the liquid injection nozzle is nested in the liquid injection groove and liquid is injected.

[0067] In this step, because the liquid injection groove is arranged on one side of the clamping part, the liquid injection groove is used to be nested with the liquid injection nozzle during battery injection or the negative pressure suction nozzle during formation to assemble the supporting part, and a first through hole connected to the liquid injection groove is penetrated in the plug-in part. Therefore, after the plug-in part is inserted into the liquid injection hole in the liquid injection port, the liquid injection groove can be nested with the liquid injection nozzle during battery injection, so that the electrolyte flows out of the liquid injection nozzle during injection and directly enters the battery through the liquid injection groove, the second through hole and the first through hole, avoiding direct contact between the liquid injection nozzle and the top cover during the liquid injection process, and effectively preventing the electrolyte from contaminating the top cover.

[0068] Step 103: After the battery is filled with liquid, the negative pressure nozzle is nested in the liquid filling tank and the battery is formed.

[0069] In this step, because the liquid injection groove is arranged on one side of the clamping part, the liquid injection groove is used to be nested with the liquid injection nozzle during battery injection or the negative pressure suction nozzle during formation to assemble the supporting part, and a first through hole connected to the liquid injection groove is penetrated in the plug-in part. Therefore, after the plug-in part is plugged into the liquid injection hole in the liquid injection port, the liquid injection groove can be nested with the negative pressure suction nozzle during battery formation, so that the gas generated and excess electrolyte directly enter the negative pressure suction nozzle through the first through hole, the second through hole and the liquid injection groove, and then are discharged from the battery, avoiding direct contact between the negative pressure suction nozzle and the top cover during the formation process, and effectively preventing the electrolyte from contaminating the top cover.

[0070] Step 104: After chemical formation, the support member is taken out from the liquid injection port; or after chemical formation and re-injection, the support member is taken out from the liquid injection port.

[0071] In this step, after formation, if no further liquid injection is required, the supporting member can be taken out from the liquid injection port, and other battery preparation processes such as sealing pin welding can be carried out; or one or more liquid injections can be carried out based on the supporting member after formation, and then the supporting member can be taken out from the liquid injection port, and other battery preparation processes such as sealing pin welding can be carried out; and the removed supporting member can be cleaned with alcohol or the like to facilitate subsequent reuse.

[0072] In the battery cleaning method provided in the embodiment of the present application, by assembling the supporting member at the battery filling port during filling and formation, direct contact between the filling nozzle or the negative pressure suction nozzle and the top cover during the filling or formation process is avoided, and the effect of no electrolyte or its crystal residue in the filling port and the top cover area near the filling port can be achieved, thereby effectively improving the battery quality.

[0073] The present application also proposes a secondary battery, wherein the secondary battery is obtained from a bare cell through the above cleaning method, specifically through support assembly, liquid injection, formation, support recovery, secondary sealing, and sorting.

[0074] The negative electrode sheet, the positive electrode sheet and the separator are wound to obtain a winding core, and the winding core is packaged to obtain a bare cell. The bare cell is cleaned using the cleaning method provided in the embodiment of the present application, and then sealed and sorted to obtain the secondary battery.

[0075] Among them, by assembling the supporting part at the battery filling port during filling and formation, the filling nozzle or the negative pressure suction nozzle is avoided from directly contacting the top cover during the filling or formation process, so that the filling port and the top cover area near the filling port are free of electrolyte or its crystals, thereby effectively improving the battery quality.

[0076] The electrolyte in the electrolyte solution injected during the injection plays a role in conducting ions between the positive electrode plate and the negative electrode plate, and the electrolyte can be liquid, gel or all-solid. In some embodiments, the electrolyte is an electrolyte solution, which includes an electrolyte salt and a solvent, and the electrolyte salt is a lithium salt.

[0077] For the above-mentioned secondary battery embodiment, it includes a bare cell, which is cleaned by the above-mentioned method and can achieve the same technical effect. In order to avoid repetition, it will not be described here. For relevant matters, please refer to the partial description of the cleaning method embodiment.

[0078] The present application also proposes an electrical device, which includes the above-mentioned secondary battery, and the secondary battery serves as a power supply for the electrical device.

[0079] For the above-mentioned electrical equipment embodiment, it includes the above-mentioned secondary battery, and the secondary battery includes a bare cell. The bare cell is cleaned by the above-mentioned method and can achieve the same technical effect. In order to avoid repetition, it will not be described here. For relevant matters, please refer to the partial description of the cleaning method embodiment.

[0080] In order to make the invention purpose, technical solution and beneficial effects of the present application clearer, the present application is further described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present application and are not used to limit the scope of the present application.

[0081] In summary, in the present embodiment, the supporting member 10 provided comprises: a clamping portion 11, which is used to clamp the surface of the top cover 20 at the battery filling port 21; a filling groove 12, which is arranged on one side of the clamping portion 11, and the filling groove 12 is used to be nested with the filling nozzle during battery filling or the negative pressure suction nozzle during formation; a plug-in portion 13, which is arranged on the side of the clamping portion 11 away from the filling groove 12 and protrudes from the clamping portion 11, and the plug-in portion 13 is used to be plugged into the filling hole 22 in the filling port 21, and a first through hole 14 which is connected to the filling groove 12 is penetrated in the plug-in portion 13; wherein, by assembling the supporting member 10 at the battery filling port 21 during filling and formation, the filling nozzle or the negative pressure suction nozzle is avoided from directly contacting the top cover 20 during the filling or formation process, and the effect of no electrolyte or its crystal residue in the filling port 21 and the top cover 20 area near the filling port 21 can be achieved, thereby effectively improving the battery quality.

[0082] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0083] The above is a detailed introduction to a support member and a battery cleaning method provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A supporting member, characterized in that: include: A clamping portion, used for clamping on the top cover surface at the battery filling port; A liquid injection groove, arranged on one side of the clamping portion, the liquid injection groove is used to be nested with a liquid injection nozzle during battery injection or a negative pressure suction nozzle during formation; The plug-in part is arranged on a side of the clamping part away from the injection groove and protrudes from the clamping part. The plug-in part is used to be plugged into the injection hole in the injection port. A first through hole communicating with the injection groove is penetrated in the plug-in part.

2. The supporting member according to claim 1, characterized in that: The clamping portion includes a boss extending from the inside to the outside and a first platform, the boss is used to sink into the filling port, the first platform is clamped on the top cover surface at the battery filling port, and a second through hole is provided in the boss, and the second through hole is connected to the filling groove and the first through hole.

3. The supporting member according to claim 2, characterized in that: The second through hole is aligned with and connected to the first through hole.

4. The supporting member according to claim 2, characterized in that: The first through hole penetrates the plug-in portion along a direction perpendicular to the first platform.

5. The supporting member according to claim 2, characterized in that: The first platform is perpendicular to the sinking platform.

6. The supporting member according to claim 2, characterized in that: The plug-in portion includes a second platform disposed at the bottom of the boss, and a protrusion disposed on a side of the second platform away from the boss, and the first through hole passes through the second platform and the protrusion.

7. The supporting member according to claim 6, characterized in that: The side surface of the boss is adapted to the liquid injection port; And / or the protrusion is adapted to the liquid injection hole.

8. The supporting member according to claim 7, characterized in that: The second platform is fitted on the bottom of the boss through interference fit between a cylinder and a hole.

9. The supporting member according to claim 2, characterized in that: The surface of the boss facing the second platform has a multi-layered annular structure or a striped structure; and / or The material of the clamping part is one or more of aluminum alloy, stainless steel, Teflon, polypropylene, polyvinylidene fluoride and EPDM rubber; and / or The material of the plug-in part is EPDM rubber.

10. A battery cleaning method based on the support member according to any one of claims 1 to 9, characterized in that: include: Before the battery is filled with liquid, the supporting member is installed into the liquid filling port of the battery, and the plug-in portion is plugged into the liquid filling hole in the liquid filling port; After the plug-in portion is plugged into the liquid injection hole in the liquid injection port, the liquid injection nozzle is nested in the liquid injection groove to inject liquid; After the battery is filled with liquid, the negative pressure nozzle is nested in the liquid filling tank and the battery is formed; After formation, the support member is taken out from the liquid injection port; or after formation and re-injection, the support member is taken out from the liquid injection port.

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