CN211629141U - Battery cover plate structure - Google Patents
Battery cover plate structure Download PDFInfo
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- CN211629141U CN211629141U CN201921947485.XU CN201921947485U CN211629141U CN 211629141 U CN211629141 U CN 211629141U CN 201921947485 U CN201921947485 U CN 201921947485U CN 211629141 U CN211629141 U CN 211629141U
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- injection molding
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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
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Abstract
The utility model discloses a battery cover plate structure aims at providing a battery cover plate structure that short circuit is difficult to appear in welded ring. It includes the apron body, plastic part down, anodal subassembly and negative pole subassembly, be equipped with anodal hole and negative pole hole on the apron body, anodal subassembly is including weld ring one, anodal utmost point post and injection molding one, injection molding one cladding is in the lateral surface of anodal utmost point post, injection molding one is through weld ring one fixed mounting on anodal hole, negative pole subassembly is including weld ring two, negative pole post and injection molding two, injection molding two cladding are in the lateral surface of negative pole post, injection molding two pass through weld ring two fixed mounting on the negative pole hole, lower plastic part sets up on the lower terminal surface of apron body. The utility model has the advantages that: short circuit is not easy to occur on the welding ring; the manufacturing process is simple, and full-automatic operation is easy to realize.
Description
Technical Field
The utility model belongs to the technical field of the relevant technique of battery and specifically relates to indicate a battery cover plate structure.
Background
At present, lithium ion batteries have the advantages of safety, high efficiency, no pollution, high specific energy, abundant raw materials, many recycling times, long storage time and the like, are widely applied to portable electronic equipment such as mobile phones, digital cameras and portable computers, and are also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the safety requirements on the lithium ion batteries are higher and higher.
However, the existing lithium ion power battery has the following problems: the raw material cost of the battery is high, the price of the attached structural parts is also high, particularly, the manufacturing process of the battery cover plate structure mostly adopts the punching or machining manufacturing of the pole, then the punching manufacturing of the welding ring is carried out, and finally the pole and the welding ring form an integrated structure through injection molding, so that the disassembly and the assembly are not facilitated, when the fault occurs, the replacement or the maintenance can be carried out only in an integrated mode, and the cost is improved; meanwhile, the manufacturing process is complex, and short circuit caused by deformation of a welding ring due to overlarge pressure is easy to occur during injection molding.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome among the prior art problem that the short circuit appears in the solder ring easily, provide a battery cover plate structure that the short circuit is difficult to appear in the solder ring.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a battery cover plate structure, it includes apron body, lower plastic part, anodal subassembly and negative pole subassembly, be equipped with anodal hole and negative pole hole on the apron body, anodal subassembly includes welded ring one, anodal utmost point post and injection molding one, injection molding one cladding is in the lateral surface of anodal utmost point post, injection molding one is through welded ring one fixed mounting on anodal hole, the negative pole subassembly includes welded ring two, negative pole post and injection molding two, injection molding two cladding are in the lateral surface of negative pole post, two fixed mounting of welded ring of injection molding two-pass are on the negative pole hole, plastic part sets up on the lower terminal surface of apron body down.
Be equipped with anodal hole and negative pole hole on the apron body, anodal subassembly includes weld ring one, anodal utmost point post and injection molding one, injection molding one cladding is in anodal utmost point post's lateral surface, injection molding one is through weld ring one fixed mounting on anodal hole, negative pole subassembly includes weld ring two, negative pole utmost point post and injection molding two, injection molding two cladding are in negative pole utmost point post's lateral surface, injection molding two pass through weld ring two fixed mounting on the negative pole hole, lower plastic part sets up on the lower terminal surface of apron body. The structure of the integrated type is formed by injection molding of the pole and the welding ring through the anode assembly and the cathode assembly which are originally designed, the anode assembly and the cathode assembly are installed through part structures, assembly and disassembly are convenient, and the purpose that the short circuit is not easy to occur in the welding ring is achieved.
Preferably, the cover plate body is provided with an explosion-proof hole, the explosion-proof hole is located between the anode hole and the cathode hole, the cover plate body is provided with a protective film and an explosion-proof sheet, the protective film is located on the upper end face of the cover plate body and completely covers the explosion-proof hole, and the explosion-proof sheet is located on the lower end face of the cover plate body and completely covers the explosion-proof hole. The explosion-proof sheet in the battery cover plate has the function that when the internal pressure of the battery is increased sharply, the internal and external pressure difference force of the battery props the explosion-proof sheet from the nick, so that the internal pressure of the battery core is released, and explosion caused by the fact that the internal pressure of the battery is increased sharply and is released everywhere is avoided; in the process of filling the electrolyte, the protective film can effectively prevent the explosion-proof sheet from being corroded by the electrolyte.
Preferably, two U-shaped grooves are formed in the upper end face of the cover plate body, the positive pole hole is located at the bottom of one U-shaped groove, the negative pole hole is located at the bottom of the other U-shaped groove, the first injection molding part and the second injection molding part are located in the corresponding U-shaped grooves respectively, sealing rings are arranged in the positive pole hole and the negative pole hole respectively, the cross section of each sealing ring is U-shaped, the inner side faces of the positive pole hole and the negative pole hole are located in the U-shaped openings and are in contact with the U-shaped bottoms, the positive pole is connected with the positive pole in a sealing mode through the sealing rings, and the negative pole is connected with the negative pole. The sealing ring realizes the sealing insulation of the anode pole and the cover plate body and the sealing insulation of the cathode pole and the cover plate inner body.
As preferred, injection molding one and injection molding two are about the center symmetry distribution with explosion-proof hole, and the shape structure of welding ring one is the same with welding ring two, and welding ring one comprises ring and L type turn-ups, the outward flange of ring and the lateral wall fixed connection in U type groove, the inward flange fixed connection of L type turn-ups and ring, the ring passes through L type turn-ups and is connected with injection molding one. Design like this is favorable to installing anodal utmost point post on anodal hole, installs negative pole utmost point post on the negative pole hole, and the outward flange of ring passes through laser welding on the lateral wall in U type groove.
Preferably, one end of the first injection molding piece is located in the U-shaped groove, the other end of the first injection molding piece is located outside the U-shaped groove, a flanging is arranged at one end, located in the U-shaped groove, of the first injection molding piece, one end of the L-shaped flanging is fixedly connected with the inner edge of the circular ring, and the other end of the L-shaped flanging is located on the flanging. The design is favorable for limiting the first injection molding part between the L-shaped flanging and the bottom of the U-shaped groove by the first welding ring, and then the outer edge of the circular ring is welded on the side wall of the U-shaped groove by laser, so that the first injection molding part and the positive pole column are fixed, and the fixing principle of the second injection molding part and the negative pole column is the same as that of the first injection molding part; the manufacturing process is simple.
Preferably, the positive electrode post is fixedly connected with the first injection molding part in an integrated injection molding mode, and the negative electrode post is fixedly connected with the second injection molding part in an integrated injection molding mode. The welding ring I is assembled after the anode pole is independently injected, the welding ring II is assembled after the cathode pole is independently injected, the manufacturing process is simple, deformation of the welding ring I and the welding ring II caused by overlarge injection pressure does not exist, and short circuit of the welding ring I and the welding ring II is effectively prevented.
The utility model has the advantages that: the maintenance cost is low, and short circuit is not easy to occur on the welding ring; the insulativity between the pole and the welding ring is good; the manufacturing process is simple, and full-automatic operation is easy to realize.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the positive and negative electrode assemblies of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a schematic structural diagram of a battery cover plate structure in the prior art;
FIG. 5 is a schematic structural view of the positive and negative electrode assemblies of FIG. 4;
FIG. 6 is a bottom view of FIG. 4;
FIG. 7 is a top view of FIG. 4;
fig. 8 is an isometric view of a prior art battery cover plate structure.
In the figure: 1. the novel plastic injection molding structure comprises a cover plate body, 2 parts of a lower plastic part, 3 parts of a positive electrode assembly, 4 parts of a negative electrode assembly, 5 parts of a positive electrode hole, 6 parts of a negative electrode hole, 7 parts of a welding ring I, 8 parts of a positive electrode pole, 9 parts of an injection molding member I, 10 parts of a welding ring II, 11 parts of a negative electrode pole, 12 parts of an injection molding member II, 13 parts of an explosion-proof hole, 14 parts of a protective film, 15 parts of an explosion-proof sheet, 16 parts of a U-shaped groove, 17 parts of a sealing ring, 18 parts of a circular ring, 19 parts of an L-shaped flanging, 20 parts of flanging, 21 parts of a shaft.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
In the embodiment shown in fig. 1, a battery cover plate structure includes a cover plate body 1, a lower plastic part 2, a positive electrode assembly 3 and a negative electrode assembly 4, the cover plate body 1 is provided with a positive electrode hole 5 and a negative electrode hole 6, the positive electrode assembly 3 includes a first welding ring 7, a positive electrode post 8 and a first injection molding part 9, the first injection molding part 9 is coated on the outer side surface of the positive electrode post 8, the first injection molding part 9 is fixedly mounted on the positive electrode hole 5 through the first welding ring 7, the negative electrode assembly 4 includes a second welding ring 10, a negative electrode post 11 and a second injection molding part 12, the second injection molding part 12 is coated on the outer side surface of the negative electrode post 11, the second injection molding part 12 is fixedly mounted on the negative electrode hole 6 through the second welding ring 10, and the lower plastic part 2 is disposed on the lower end surface of the.
As shown in fig. 1, the cover plate body 1 is provided with an explosion-proof hole 13, the explosion-proof hole 13 is located between the positive electrode hole 5 and the negative electrode hole 6, the cover plate body 1 is provided with a protection film 14 and an explosion-proof sheet 15, the protection film 14 is located on the upper end surface of the cover plate body 1 and completely covers the explosion-proof hole 13, and the explosion-proof sheet 15 is located on the lower end surface of the cover plate body 1 and completely covers the explosion-proof hole 13.
As shown in fig. 1, two U-shaped grooves 16 are arranged on the upper end surface of the cover plate body 1, the positive electrode hole 5 is located at the bottom of one U-shaped groove 16, the negative electrode hole 6 is located at the bottom of the other U-shaped groove 16, the first injection molding part 9 and the second injection molding part 12 are respectively located in the corresponding U-shaped grooves 16, sealing rings 17 are respectively arranged in the positive electrode hole 5 and the negative electrode hole 6, the cross section of each sealing ring 17 is U-shaped, the inner side surfaces of the positive electrode hole 5 and the negative electrode hole 6 are respectively located in the U-shaped openings and are in contact with the U-shaped bottoms, the positive electrode post 8 is hermetically connected with the positive electrode hole 5 through the sealing rings 17, and the negative electrode post 11 is hermetically connected with the negative.
As shown in fig. 1, the first injection molding part 9 and the second injection molding part 12 are distributed bilaterally symmetrically with the explosion-proof hole 13 as the center, as shown in fig. 2, the first welding ring 7 and the second welding ring 10 are identical in shape and structure, as shown in fig. 3, the first welding ring 7 is composed of a circular ring 18 and an L-shaped flange 19, the outer edge of the circular ring 18 is fixedly connected with the side wall of the U-shaped groove 16, the L-shaped flange 19 is fixedly connected with the inner edge of the circular ring 18, and the circular ring 18 is connected with the first injection molding part 9 through the L-shaped flange 19.
As shown in fig. 1, one end of the first injection molding part 9 is located in the U-shaped groove 16, and the other end of the first injection molding part 9 is located outside the U-shaped groove 16, as shown in fig. 3, one end of the first injection molding part 9 located in the U-shaped groove 16 is provided with a flange 20, one end of the L-shaped flange 19 is fixedly connected with the inner edge of the ring 18, and the other end of the L-shaped flange 19 is located on the flange 20.
As shown in fig. 2, the positive electrode post 8 is fixedly connected with the first injection molding part 9 by means of integral injection molding, and the negative electrode post 11 is fixedly connected with the second injection molding part 12 by means of integral injection molding.
The working principle is as follows: as shown in fig. 4, 5, 6, 7 and 8, in the prior art, the manufacturing process of the positive electrode assembly 3 and the negative electrode assembly 4 is as follows: the manufacturing method comprises the steps of punching or machining the positive pole 8, punching or machining the negative pole 11, punching the first welding ring 7 and the second welding ring 10, forming the positive pole 8 and the first welding ring 7 into a whole through injection molding, and forming the negative pole 11 and the second welding ring 10 into a whole through injection molding, so that the manufacturing process is complex, and short circuit caused by deformation of the welding rings due to overlarge pressure is easy to occur during injection molding. Therefore, the present invention solves the above problems from the following embodiments:
the manufacturing process of the positive electrode component 3 and the negative electrode component 4 comprises the following steps: the positive pole 8 is manufactured by stamping or machining, the negative pole 11 is manufactured by stamping or machining, the first welding ring 7 and the second welding ring 10 are manufactured by stamping, the positive pole 8 and the first injection molding part 9 are integrated into a whole by injection molding, the negative pole 11 and the second injection molding part 12 are integrated by injection molding, the first welding ring 7 is assembled on the first injection molding part 9, and the second welding ring 10 is assembled on the second injection molding part 12. The outer edge of the first welding ring 7 is fixedly connected with the side wall of the corresponding U-shaped groove 16 on the cover plate body 1 through laser welding; the outer edge of the second welding ring 10 is fixedly connected with the side wall of the other corresponding U-shaped groove 16 on the cover plate body 1 through laser welding. The process is only assembled after the anode pole 8 and the cathode pole 11 are independently injected, the manufacturing process is simple, and short circuit caused by deformation of a welding ring due to overlarge pressure during injection does not exist.
The utility model discloses the shape of anodal utmost point post and negative pole utmost point post set forth includes but not limited to circular, oval-shaped, square and rhombus.
Claims (5)
1. A battery cover plate structure is characterized by comprising a cover plate body (1), a lower plastic part (2), a positive electrode assembly (3) and a negative electrode assembly (4), wherein the cover plate body (1) is provided with a positive electrode hole (5) and a negative electrode hole (6), the positive electrode assembly (3) comprises a welding ring I (7), a positive electrode pole (8) and an injection molding member I (9), the injection molding member I (9) is coated on the outer side surface of the positive electrode pole (8), the injection molding member I (9) is fixedly arranged on the positive electrode hole (5) through the welding ring I (7), the negative electrode assembly (4) comprises a welding ring II (10), a negative electrode pole (11) and an injection molding member II (12), the injection molding member II (12) is coated on the outer side surface of the negative electrode pole (11), the injection molding member II (12) is fixedly arranged on the negative electrode hole (6) through the welding ring II (10), and the lower plastic part (2) is arranged on the lower end surface of the cover plate body (1), anodal utmost point post (8) are through integrative injection moulding's mode and injection molding (9) fixed connection, negative pole utmost point post (11) are through integrative injection moulding's mode and injection molding two (12) fixed connection.
2. The battery cover plate structure according to claim 1, wherein the cover plate body (1) is provided with an explosion-proof hole (13), the explosion-proof hole (13) is located between the positive electrode hole (5) and the negative electrode hole (6), the cover plate body (1) is provided with a protective film (14) and an explosion-proof sheet (15), the protective film (14) is located on the upper end face of the cover plate body (1) and completely covers the explosion-proof hole (13), and the explosion-proof sheet (15) is located on the lower end face of the cover plate body (1) and completely covers the explosion-proof hole (13).
3. A battery cover plate structure according to claim 1 or 2, characterized in that two U-shaped grooves (16) are arranged on the upper end surface of the cover plate body (1), the positive electrode hole (5) is positioned at the bottom of one U-shaped groove (16), the negative electrode hole (6) is positioned at the bottom of the other U-shaped groove (16), the first injection molding part (9) and the second injection molding part (12) are respectively positioned in the corresponding U-shaped grooves (16), sealing rings (17) are arranged in the positive pole hole (5) and the negative pole hole (6), the cross section of the sealing ring (17) is U-shaped, the inner side surfaces of the positive electrode hole (5) and the negative electrode hole (6) are both positioned in the U-shaped opening and are contacted with the bottom of the U-shaped opening, the anode pole (8) is hermetically connected with the anode hole (5) through a sealing ring (17), and the negative pole post (11) is hermetically connected with the negative pole hole (6) through a sealing ring (17).
4. The battery cover plate structure of claim 3, wherein the first injection molding part (9) and the second injection molding part (12) are symmetrically distributed with the explosion-proof hole (13) as the center, the first welding ring (7) and the second welding ring (10) are identical in shape and structure, the first welding ring (7) is composed of a circular ring (18) and an L-shaped flanging (19), the outer edge of the circular ring (18) is fixedly connected with the side wall of the U-shaped groove (16), the L-shaped flanging (19) is fixedly connected with the inner edge of the circular ring (18), and the circular ring (18) is connected with the first injection molding part (9) through the L-shaped flanging (19).
5. A battery cover plate structure as claimed in claim 4, wherein one end of the first injection molding part (9) is located in the U-shaped groove (16), the other end of the first injection molding part (9) is located outside the U-shaped groove (16), one end of the first injection molding part (9) located in the U-shaped groove (16) is provided with a flange (20), one end of the L-shaped flange (19) is fixedly connected with the inner edge of the circular ring (18), and the other end of the L-shaped flange (19) is located on the flange (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921947485.XU CN211629141U (en) | 2019-11-12 | 2019-11-12 | Battery cover plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921947485.XU CN211629141U (en) | 2019-11-12 | 2019-11-12 | Battery cover plate structure |
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| Publication Number | Publication Date |
|---|---|
| CN211629141U true CN211629141U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921947485.XU Active CN211629141U (en) | 2019-11-12 | 2019-11-12 | Battery cover plate structure |
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| CN (1) | CN211629141U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828720A (en) * | 2019-11-12 | 2020-02-21 | 浙江锦泰电子有限公司 | Battery cover plate |
| CN113161655A (en) * | 2021-05-14 | 2021-07-23 | 郑州广源电池材料有限公司 | Fixing and connecting structure and mounting method for lithium battery cover plate assembly |
| CN113161658A (en) * | 2021-05-14 | 2021-07-23 | 郑州广源电池材料有限公司 | Simple pole encapsulated lithium battery cover plate structure and installation method |
-
2019
- 2019-11-12 CN CN201921947485.XU patent/CN211629141U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828720A (en) * | 2019-11-12 | 2020-02-21 | 浙江锦泰电子有限公司 | Battery cover plate |
| CN113161655A (en) * | 2021-05-14 | 2021-07-23 | 郑州广源电池材料有限公司 | Fixing and connecting structure and mounting method for lithium battery cover plate assembly |
| CN113161658A (en) * | 2021-05-14 | 2021-07-23 | 郑州广源电池材料有限公司 | Simple pole encapsulated lithium battery cover plate structure and installation method |
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