CN113707978B - High-safety battery top cover and processing method thereof - Google Patents
High-safety battery top cover and processing method thereof Download PDFInfo
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- CN113707978B CN113707978B CN202111078216.6A CN202111078216A CN113707978B CN 113707978 B CN113707978 B CN 113707978B CN 202111078216 A CN202111078216 A CN 202111078216A CN 113707978 B CN113707978 B CN 113707978B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a high-safety battery top cover, which comprises a top cover plate, wherein two mounting holes are formed in the top of the top cover plate, insulating column sleeves are fixedly arranged in the two mounting holes, two ends of each insulating column sleeve extend out of the mounting holes, polar columns are fixedly arranged in the two insulating column sleeves, two ends of each polar column extend out of the insulating column sleeve, annular insulating plates positioned above the top cover plate are fixedly sleeved on the two insulating column sleeves, the bottoms of the two annular insulating plates are fixedly connected with the top of the top cover plate, and conductive cover plates are fixedly arranged at the tops of the two annular insulating plates. The invention has reasonable design and good practicability, can improve the sealing performance of the battery top cover, prevent the occurrence of the liquid leakage phenomenon, can strengthen the mounting positions of the two poles and the two insulating pole sleeves, and can avoid loosening, thereby improving the safety performance of the battery when the battery end cover is mounted and fixed on the battery shell.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a high-safety battery top cover and a processing method thereof.
Background
Nowadays, the battery industry plays an increasingly important role in human society and daily life, along with the enhancement of people on environmental awareness, a power battery is an important component part of a new energy battery, and has the greatest advantages of high energy and no pollution, and is the development direction of a new energy automobile and an energy storage power station, so that the safety performance of the battery is particularly important, the sealing of a top cover of the power battery is an important guarantee of the safety of the battery, the top cover of the battery has lower internal resistance, has an overcharge protection function, can protect the power battery when the outside of the power battery is short-circuited, can ensure the safety performance of the power battery, and the top cover of the battery is the most important safety guarantee part in the power battery, and the structure and the production process of the top cover directly or indirectly influence the performance of the power battery and the manufacturing cost of a battery manufacturer.
However, in the prior art, in the process of producing and processing a battery top cover, the tightness between a top cover sheet and a pole column penetrating through the top cover sheet is poor, the tightness between an insulating column sleeve and the top cover sheet is also not ideal, so that the sealing performance of the battery top cover is poor, the leakage phenomenon is easy to occur, the installation positions of a positive pole column, a negative pole column and the insulating column sleeve on the battery top cover are not firm enough, looseness is easy to occur after long-time use, the service life of a battery is reduced when the battery end cover is installed and fixed on a battery shell, and potential safety hazards exist.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a high-safety battery top cover and a processing method thereof, which solve the problems that in the production and processing process of the battery top cover, the sealing performance between a top cover sheet and a pole post penetrating through the top cover sheet is poor, the sealing performance between an insulating pole sleeve and the top cover sheet is also not ideal, the liquid leakage phenomenon is easy to occur, the installation positions of a positive pole post, a negative pole post and the insulating pole sleeve on the battery top cover are not firm enough, looseness is easy to occur after long-time use, the service life of a battery is reduced, the safety performance of the battery is poor, and potential safety hazards exist.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a battery top cap of high security, includes the top cover piece, two mounting holes have been seted up at the top of top cover piece, equal fixed mounting has the insulating column cover in two mounting holes, the both ends of insulating column cover all extend to outside the mounting hole, equal fixed mounting has the utmost point post in two insulating column covers, the both ends of utmost point post all extend to outside the insulating column cover, all fixed cover has the annular insulation board that is located the top cover piece top on two insulating column covers, the bottom of two annular insulation board all with the top fixed connection of top cover piece, the equal fixed mounting in top of two annular insulation board has the conductive cover piece, the top of two utmost point posts extends respectively in the corresponding conductive cover piece, the placing hole that is located between two mounting holes has been seted up at the top of top cover piece, place downthehole fixed mounting has the explosion-proof valve, the top fixed mounting of top cover piece has the explosion-proof valve protection film, explosion-proof valve protection film and place hole looks adaptation, equidistant three first annular seal groove has been seted up on the inner wall of same insulating column cover, equal fixed mounting has first annular seal in three first annular seal groove, the equal fixed mounting in the annular seal groove, the equal fixed mounting has the annular seal with the second annular seal groove of the second annular seal ring of two inner wall of the same annular column, the equal annular seal ring is all set up with the second annular seal ring.
Preferably, the inner walls of the two mounting holes are provided with first annular injection molding grooves, the outer walls of the two insulating column sleeves are provided with second annular injection molding grooves, the two first annular injection molding grooves are respectively communicated with the corresponding second annular injection molding grooves, the top of the top cover plate is provided with two L-shaped injection molding holes, and the two L-shaped injection molding holes are respectively communicated with the corresponding first annular injection molding grooves.
Preferably, the first annular injection molding groove is located above the second annular sealing groove.
Preferably, the inner walls of the two insulating column sleeves are provided with third annular injection molding grooves, the outer walls of the two polar columns are provided with fourth annular injection molding grooves, the two third annular injection molding grooves are respectively communicated with the corresponding fourth annular injection molding grooves, one side wall of each of the two third annular injection molding grooves is provided with a liquid inlet hole, one side of each of the two annular insulating plates is provided with a strip-shaped injection molding hole, and the two strip-shaped injection molding holes are respectively communicated with the corresponding liquid inlet holes.
Preferably, the third annular injection molding groove is located above the first annular sealing groove.
Preferably, two positioning columns are fixedly arranged at the bottoms of the two annular insulating plates, four positioning grooves are formed in the top of the top cover plate, and the four positioning columns are respectively and slidably arranged in the corresponding positioning grooves.
The processing method of the battery top cover with high safety is characterized by comprising the following steps:
s1: placing the manufactured plate on a stamping forming device for stamping processing, further manufacturing a top cover plate, carrying out chemical surface treatment on the top cover plate, and carrying out polishing processing on punched holes on the top cover plate;
s2: installing an explosion-proof valve in a placement hole on a top cover sheet, detecting the height difference between the upper surface of the explosion-proof valve and the upper surface of the top cover sheet, wherein the height difference is a qualified product in a specified range, and then using glue solution to adhere an explosion-proof valve protection film to the top of the top cover sheet, so that the placement hole is blocked by the explosion-proof valve protection film;
s3: the second annular sealing ring is arranged in the second annular sealing groove, the first annular sealing ring is arranged in the first annular sealing groove, after the first annular sealing ring is arranged in the first annular sealing groove, the two insulating column sleeves are respectively pressed into corresponding mounting holes, the two insulating column sleeves are respectively welded and fixed in the corresponding mounting holes by utilizing a laser welding process, the two annular insulating plates are welded and fixed at the top of the top cover plate by utilizing a light welding process, then the two polar posts are respectively arranged in the corresponding insulating column sleeves, and the two conductive cover plates are welded and fixed at the top of the corresponding annular insulating plates by utilizing a laser welding process;
s4: using heating equipment to perform high-temperature melting treatment on the sealing insulating material, after melting, using an injection gun to sequentially inject the melted sealing insulating material into the two L-shaped injection holes and the two strip-shaped injection holes, so that the melted sealing insulating material enters a space formed by a third annular injection molding groove and a fourth annular injection molding groove, the melted sealing insulating material enters a space formed by a first annular injection molding groove and a second annular injection molding groove, and after injection is completed, cooling the sealing insulating material to solidify and shape the sealing insulating material, thus obtaining a finished product of the battery top cover;
s5: and (3) performing a tightness detection test on the prepared finished battery top cover by using detection equipment, and performing an electrical property detection test on the prepared finished battery top cover by using an edge resistance tester to obtain a qualified finished battery top cover, so that the qualified finished battery top cover can be processed and produced in the next procedure.
Preferably, the sealing insulating material is one or more of ceramics, plastics, rubber and glass
(III) beneficial effects
The invention provides a high-safety battery top cover and a processing method thereof. The beneficial effects are as follows:
(1) According to the high-safety battery top cover and the processing method thereof, the first annular sealing ring is arranged, so that a gap between the pole column and the insulating column sleeve can be sealed, the second annular sealing ring is arranged, the gap between the insulating column sleeve and the mounting hole can be sealed, the sealing performance of the battery top cover is improved, the same insulating column sleeve is provided with three first annular sealing rings, and two second annular sealing rings are arranged in the same mounting hole, so that the leakage prevention effect of a battery solution is further improved, the sealing performance of the battery top cover is further enhanced, and the safety performance of the battery in use is improved.
(2) According to the high-safety battery top cover and the processing method thereof, the molten sealing insulating material is injected into the space formed by the first annular injection molding groove and the second annular injection molding groove, and is injected into the space formed by the third annular injection molding groove and the fourth annular injection molding groove, after the sealing insulating material is cooled and shaped, the sealing performance of the battery top cover can be enhanced, the assembly between the insulating column sleeve and the mounting hole is firmer, the insulating column sleeve cannot be loosened in the mounting hole, the assembly between the insulating column sleeve and the pole column is firmer, the pole column cannot be loosened in the insulating shaft sleeve, no liquid leakage occurs, and when the battery end cover is mounted and fixed on the battery shell, the safety performance of the battery in use is improved, and the service life of the battery is prolonged.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the front view of the present invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
fig. 5 is an enlarged schematic view of a portion C in fig. 3.
In the figure: 1. a top cover sheet; 2. a mounting hole; 3. an insulating column sleeve; 4. a pole; 5. an annular insulating plate; 6. a conductive cover plate; 7. a first annular seal groove; 8. a first annular seal ring; 9. a second annular seal groove; 10. a second annular seal ring; 11. a first annular injection molding groove; 12. a second annular injection molding groove; 13. a third annular injection molding groove; 14. a fourth annular injection molding groove; 15. an L-shaped injection molding hole; 16. a liquid inlet hole; 17. a strip-shaped injection molding hole; 18. placing the hole; 19. an explosion-proof valve; 20. an explosion-proof valve protection film; 21. positioning columns; 22. and a positioning groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-5, the present invention provides a technical solution: the utility model provides a battery top cap of high security, including top cap 1, two mounting holes 2 have been seted up at the top of top cap 1, equal fixed mounting has insulating column cover 3 in two mounting holes 2, the both ends of insulating column cover 3 all extend to outside mounting holes 2, equal fixed mounting has utmost point post 4 in two insulating column cover 3, the both ends of utmost point post 4 all extend to outside insulating column cover 3, through setting up insulating cover 3, play the effect of insulating to utmost point post 4 with top cap 1, two utmost point posts 4 all are made by metal material, and two utmost point posts 4 set up respectively at anodal post and negative pole post, equal fixed cover is equipped with annular insulation board 5 that is located top cap 1 on two insulating column cover 3, the bottom of two annular insulation board 5 all is with the top fixed connection of top cap 1, equal fixed mounting in top of two annular insulation board 5 has electrically conductive cover plate 6, the top of two utmost point post 4 extends to corresponding electrically conductive 6 respectively, two electrically conductive cover 6 all are by the metal material shaping that is good electric conductivity, top cap 1 is opened and is equipped with two and is located between top cap 1 and be equipped with the insulating, the first annular ring-shaped valve 18 is equipped with the sealing washer, the sealing washer is placed to the same annular seal hole of sealing washer 20, the inside sealing washer is placed to the annular sealing washer 20 with the top cap 8, the same, the sealing washer is placed on the top cap 1, the sealing washer is placed to the annular ring is sealed with the annular ring of sealing ring 20, the top cap is placed on the top cap is 8, the top cap is equipped with the sealing ring is placed on the sealing ring of sealing ring 20, and the sealing ring is placed at the top cap is sealed top cap and the top cap is 20, two second annular seal grooves 9 are formed in the inner wall of the same mounting hole 2, second annular seal rings 10 are fixedly arranged in the two second annular seal grooves 9, the inner annular surfaces of the two second annular seal rings 10 are in sealing connection with the outer wall of the insulating column sleeve 3, the first annular seal rings 8 are arranged to seal the gap between the pole column 4 and the insulating column sleeve 3, battery solution can be effectively prevented from leaking out of the gap between the pole column 4 and the insulating column sleeve 3, the second annular seal rings 10 are arranged to seal the gap between the insulating column sleeve 3 and the mounting hole 2, the battery solution can be effectively prevented from leaking out of the gap between the insulating column sleeve 3 and the mounting hole 2, three first annular seal rings 8 are arranged on the same insulating column sleeve 3, and the two second annular seal rings 10 are arranged in the same mounting hole 2, so that the battery solution leakage preventing effect is further improved, the sealing performance of a battery top cover is further enhanced, and the safety performance of the battery in use is improved.
In this embodiment, the first annular seal ring 8 and the second annular seal ring 10 are made of perfluororubber material.
In this embodiment, the first annular injection groove 11 has all been seted up on the inner wall of two mounting holes 2, the second annular injection groove 12 has all been seted up on the outer wall of two insulating column cover 3, two first annular injection grooves 11 are linked together with corresponding second annular injection groove 12 respectively, two L type injection holes 15 have been seted up at the top of top cap 1, two L type injection holes 15 are linked together with corresponding first annular injection groove 11 respectively, through the intercommunication cooperation that sets up first annular injection groove 11 and second annular injection groove 12, be convenient for pour into fused sealing insulation material into in the space that first annular injection groove 11 and second annular injection groove 12 constitute, after sealing insulation material cooling design, sealing performance between insulating column cover 3 and mounting hole 2 can be strengthened, also make the assembly between insulating column cover 3 and the mounting hole 2 more firm, insulating column cover 3 can not take place not hard up in mounting hole 2.
In this embodiment, the first annular injection groove 11 is located above the second annular sealing groove 9.
In this embodiment, the inner walls of the two insulating column sleeves 3 are provided with the third annular injection molding grooves 13, the outer walls of the two pole columns 4 are provided with the fourth annular injection molding grooves 14, the two third annular injection molding grooves 13 are respectively communicated with the corresponding fourth annular injection molding grooves 14, one side wall of each of the two third annular injection molding grooves 13 is provided with the liquid inlet holes 16, one side of each of the two annular insulating plates 5 is provided with the strip-shaped injection molding holes 17, the two strip-shaped injection molding holes 17 are respectively communicated with the corresponding liquid inlet holes 16, and through the communication cooperation of the third annular injection molding grooves 13 and the fourth annular injection molding grooves 14, molten sealing insulating materials are conveniently injected into the space formed by the third annular injection molding grooves 13 and the fourth annular injection molding grooves 14, after the sealing insulating materials are cooled and shaped, the sealing performance between the insulating column sleeve 3 and the pole column 4 can be enhanced, the assembly between the insulating column sleeve 3 and the pole column 4 is firmer, and the pole column 4 cannot be loose in the insulating shaft sleeve 3.
In this embodiment, the third annular injection groove 13 is located above the first annular sealing groove 7.
In this embodiment, two positioning columns 21 are fixedly installed at the bottoms of two annular insulating plates 5, four positioning grooves 22 are formed in the top of the top cover plate 1, the four positioning columns 21 are slidably installed in the corresponding positioning grooves 22 respectively, and through the plug-in matching of the positioning columns 21 and the opposite positioning grooves 22, the function of positioning the installation positions of the annular insulating plates 5 is achieved, and then the annular insulating plates 5 can be quickly and accurately installed and fixed on the top cover plate 1.
The processing method of the battery top cover with high safety is characterized by comprising the following steps of:
s1: placing the manufactured plate on a stamping forming device for stamping processing, further manufacturing a top cover sheet 1, carrying out chemical surface treatment on the top cover sheet 1, and carrying out polishing processing on punched holes on the top cover sheet 1;
s2: installing an explosion-proof valve 19 in a placement hole 18 on the top cover sheet 1, detecting the height difference between the upper surface of the explosion-proof valve 19 and the upper surface of the top cover sheet 1, wherein the height difference is a qualified product within a specified range, and then adhering an explosion-proof valve protection film 20 on the top of the top cover sheet 1 by using glue solution, so that the explosion-proof valve protection film 20 seals the placement hole 18;
s3: the second annular sealing ring 10 is arranged in the second annular sealing groove 9, the first annular sealing ring 8 is arranged in the first annular sealing groove 7, after the first annular sealing ring is arranged in the first annular sealing groove 7, the two insulating column sleeves 3 are respectively pressed into the corresponding mounting holes 2, the two insulating column sleeves 3 are respectively welded and fixed in the corresponding mounting holes 2 by utilizing a laser welding process, the two annular insulating plates 5 are welded and fixed at the top of the top cover plate 1 by utilizing a light welding process, the two polar posts 4 are respectively arranged in the corresponding insulating column sleeves 3, and the two conductive cover plates 6 are welded and fixed at the top of the corresponding annular insulating plates 5 by utilizing a laser welding process;
s4: the sealing insulating material is subjected to high-temperature melting treatment by using heating equipment, after melting is finished, the molten sealing insulating material is sequentially injected into the two L-shaped injection holes 15 and the two strip-shaped injection holes 17 by using an injection gun, so that the molten sealing insulating material enters a space formed by the third annular injection molding groove 13 and the fourth annular injection molding groove 14, the molten sealing insulating material enters a space formed by the first annular injection molding groove 11 and the second annular injection molding groove 12, and after the injection is finished, the sealing insulating material is cooled, so that the sealing insulating material is solidified and shaped, and a finished product of the battery top cover can be manufactured;
s5: and (3) performing a tightness detection test on the prepared finished battery top cover by using detection equipment, and performing an electrical property detection test on the prepared finished battery top cover by using an edge resistance tester to obtain a qualified finished battery top cover, so that the qualified finished battery top cover can be processed and produced in the next procedure.
In this embodiment, the sealing insulating material is one or more of ceramic, plastic, rubber, and glass.
In this embodiment, when in use, the first annular sealing ring 8 is arranged to seal the gap between the pole 4 and the insulating column sleeve 3, so as to effectively prevent battery solution from leaking out of the gap between the pole 4 and the insulating column sleeve 3, the second annular sealing ring 10 is arranged to seal the gap between the insulating column sleeve 3 and the mounting hole 2, so as to effectively prevent battery solution from leaking out of the gap between the insulating column sleeve 3 and the mounting hole 2, and the same insulating column sleeve 3 is provided with three first annular sealing rings 8, and two second annular sealing rings 10 are arranged in the same mounting hole 2, so that the battery solution leakage prevention effect is further improved, the sealing performance of a battery top cover is further enhanced, the safety performance of the battery in use is improved, and molten sealing insulating material is injected into the space formed by the first annular injection molding groove 11 and the second annular injection molding groove 12 from the two L-shaped injection molding holes 15, the molten sealing insulating material is injected into the space formed by the third annular injection molding groove 13 and the fourth annular injection molding groove 14 from the two strip-shaped injection molding holes 17, after injection, the sealing performance between the insulating column sleeve 3 and the mounting holes 2 can be enhanced after the sealing insulating material is cooled and shaped, the sealing performance between the insulating column sleeve 3 and the pole columns 4 can be enhanced, the assembly between the insulating column sleeve 3 and the mounting holes 2 is firmer, the insulating column sleeve 3 cannot loosen in the mounting holes 2, the assembly between the insulating column sleeve 3 and the pole columns 4 is firmer, the pole columns 4 cannot loosen in the insulating shaft sleeve 3, thereby improving the sealing performance of the battery top cover, preventing the occurrence of liquid leakage phenomenon, and the mounting positions of the two pole columns 4 and the two insulating column sleeves 3 can be reinforced, avoiding loosening, and improving the safety performance of the battery during use when the battery end cover is installed and fixed on the battery shell
And all that is not described in detail in this specification is well known to those skilled in the art.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The processing method of the battery top cover with high safety is characterized by comprising the following steps of:
s1: placing the manufactured plate on a stamping forming device for stamping processing, further manufacturing a top cover plate (1), carrying out chemical surface treatment on the top cover plate (1), and carrying out polishing processing on punched holes on the top cover plate;
s2: installing an explosion-proof valve (19) in a placement hole (18) on the top cover sheet (1), detecting the height difference between the upper surface of the explosion-proof valve (19) and the upper surface of the top cover sheet (1), wherein the height difference is a qualified product in a specified range, and then adhering an explosion-proof valve protection film (20) on the top of the top cover sheet (1) by using glue solution, so that the placement hole (18) is blocked by the explosion-proof valve protection film (20);
s3: the method comprises the steps of loading a second annular sealing ring (10) into a second annular sealing groove (9), loading a first annular sealing ring (8) into a first annular sealing groove (7), respectively pressing two insulating column sleeves (3) into corresponding mounting holes (2) after loading and closing, respectively welding and fixing the two insulating column sleeves (3) into the corresponding mounting holes (2) by utilizing a laser welding process, welding and fixing two annular insulating plates (5) on the top of a top cover plate (1) by utilizing a light welding process, respectively loading two polar columns (4) into the corresponding insulating column sleeves (3), and then laser welding and fixing two conductive cover plates (6) on the top of the corresponding annular insulating plates (5);
s4: the sealing insulating material is subjected to high-temperature melting treatment by using heating equipment, after melting is finished, the molten sealing insulating material is sequentially injected into the two L-shaped injection holes (15) and the two strip-shaped injection holes (17) by using an injection gun, so that the molten sealing insulating material enters a space formed by a third annular injection molding groove (13) and a fourth annular injection molding groove (14), the molten sealing insulating material enters a space formed by a first annular injection molding groove (11) and a second annular injection molding groove (12), and after the injection is finished, the injection is cooled, so that the sealing insulating material is solidified and shaped, and a finished product of the battery top cover can be manufactured;
s5: and (3) performing a tightness detection test on the prepared finished battery top cover by using detection equipment, and performing an electrical property detection test on the prepared finished battery top cover by using an edge resistance tester to obtain a qualified finished battery top cover, so that the qualified finished battery top cover can be processed and produced in the next procedure.
2. The method for manufacturing a high-safety battery top cover according to claim 1, wherein: the sealing insulating material is one or more of ceramic, plastic, rubber and glass.
3. A high-safety battery top cover produced by the method for processing a high-safety battery top cover according to any one of claims 1 to 2, characterized in that: the anti-explosion protection device comprises a top cover plate (1), wherein two mounting holes (2) are formed in the top of the top cover plate (1), an insulating column sleeve (3) is fixedly mounted in each of the two mounting holes (2), two ends of each insulating column sleeve (3) extend out of the corresponding mounting holes (2), a pole column (4) is fixedly mounted in each of the two insulating column sleeves (3), two ends of each pole column (4) extend out of the corresponding insulating column sleeve (3), annular insulating plates (5) which are arranged above the top cover plate (1) are fixedly sleeved on the two insulating column sleeves (3), the bottoms of the two annular insulating plates (5) are fixedly connected with the top of the top cover plate (1), conductive cover plates (6) are fixedly mounted at the tops of the two annular insulating plates (5), the tops of the two pole column sleeves (4) extend into the corresponding conductive cover plates (6), an explosion protection film (18) is arranged between the two mounting holes (2), an explosion protection film (20) is arranged in the top cover plate (18), and an explosion protection film (20) is arranged in the top cover plate (1), three first annular seal grooves (7) are uniformly arranged on the inner wall of the insulating column sleeve (3) at equal intervals, first annular seal rings (8) are fixedly arranged in the first annular seal grooves (7), the inner annular surfaces of the first annular seal rings (8) are in sealing contact with the outer wall of the pole column (4), two second annular seal grooves (9) are formed in the inner wall of the mounting hole (2), second annular seal rings (10) are fixedly arranged in the second annular seal grooves (9), and the inner annular surfaces of the second annular seal rings (10) are in sealing connection with the outer wall of the insulating column sleeve (3).
4. A high safety battery top cover according to claim 3, wherein: two first annular injection molding grooves (11) are formed in the inner wall of each mounting hole (2), second annular injection molding grooves (12) are formed in the outer wall of each insulating column sleeve (3), the first annular injection molding grooves (11) are respectively communicated with the corresponding second annular injection molding grooves (12), two L-shaped injection molding holes (15) are formed in the top of each top cover sheet (1), and the two L-shaped injection molding holes (15) are respectively communicated with the corresponding first annular injection molding grooves (11).
5. The high-safety battery top cover of claim 4, wherein: the first annular injection molding groove (11) is positioned above the second annular sealing groove (9).
6. A high safety battery top cover according to claim 3, wherein: the novel insulating column comprises an insulating column sleeve (3), wherein the inner walls of the insulating column sleeve (3) are provided with third annular injection molding grooves (13), the outer walls of the polar columns (4) are provided with fourth annular injection molding grooves (14), the third annular injection molding grooves (13) are respectively communicated with the corresponding fourth annular injection molding grooves (14), one side wall of each third annular injection molding groove (13) is provided with a liquid inlet hole (16), one side of each annular insulating plate (5) is provided with a strip-shaped injection molding hole (17), and the strip-shaped injection molding holes (17) are respectively communicated with the corresponding liquid inlet holes (16).
7. The high-safety battery top cover of claim 6, wherein: the third annular injection molding groove (13) is positioned above the first annular sealing groove (7).
8. A high safety battery top cover according to claim 3, wherein: two locating columns (21) are fixedly installed at the bottoms of the two annular insulating plates (5), four locating grooves (22) are formed in the top of the top cover sheet (1), and the four locating columns (21) are respectively and slidably installed in the corresponding locating grooves (22).
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| CN209183582U (en) * | 2018-11-22 | 2019-07-30 | 芜湖天弋能源科技有限公司 | A kind of top cover structure of power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100349911B1 (en) * | 1999-12-27 | 2002-08-22 | 삼성에스디아이 주식회사 | Prismatic type sealed battery and method for making the same |
| JP2003223885A (en) * | 2002-01-30 | 2003-08-08 | Japan Storage Battery Co Ltd | Battery |
| JP2012033339A (en) * | 2010-07-29 | 2012-02-16 | Daiwa Kasei Co Ltd | Large scale lithium ion battery for motor vehicle, dwelling house, and industrial apparatus |
| US9023517B2 (en) * | 2012-03-21 | 2015-05-05 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN104409667A (en) * | 2014-11-23 | 2015-03-11 | 深圳市科达利实业股份有限公司 | Power battery top cover with high sealing property and processing method for power battery top cover |
| CN106784450A (en) * | 2017-01-19 | 2017-05-31 | 佛山市康荣精细陶瓷有限公司 | A kind of sealed cover plate structure of lithium battery and preparation method thereof |
| CN107634158B (en) * | 2017-07-28 | 2020-06-30 | 超威电源集团有限公司 | Battery terminal post sealing method and structure |
| CN208889706U (en) * | 2018-10-16 | 2019-05-21 | 中航锂电（洛阳）有限公司 | A kind of power battery and its cover plate assembly |
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| CN102656716A (en) * | 2010-01-12 | 2012-09-05 | 丰田自动车株式会社 | Method for manufacturing battery, and battery |
| CN209183582U (en) * | 2018-11-22 | 2019-07-30 | 芜湖天弋能源科技有限公司 | A kind of top cover structure of power battery |
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