CN213026404U - Power battery pole column assembly, power battery top cover and power battery - Google Patents
Power battery pole column assembly, power battery top cover and power battery Download PDFInfo
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- CN213026404U CN213026404U CN202021739309.XU CN202021739309U CN213026404U CN 213026404 U CN213026404 U CN 213026404U CN 202021739309 U CN202021739309 U CN 202021739309U CN 213026404 U CN213026404 U CN 213026404U
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- power battery
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- 229920003023 plastic Polymers 0.000 claims abstract description 70
- 239000004033 plastic Substances 0.000 claims abstract description 70
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000001746 injection moulding Methods 0.000 claims abstract description 21
- 239000011810 insulating material Substances 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
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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 provides a power battery utmost point post subassembly includes: plastic, metal upper pole, sealing ring, top cover plate, lower plastic and metal lower pole are arranged on the pole, the top cover plate is provided with an inwards concave hollow pole hole, and a plurality of small through holes are formed in an inwards concave platform of the pole hole. The sealing ring is installed in a pole column hole of the top cover plate, the upper pole column is arranged above the sealing ring and penetrates through pole column holes of the lower plastic and the top cover plate together with the lower pole column, then the upper pole column is welded and connected with and fixed to the top cover plate, and the sealing ring is compressed and fixed and the lower plastic is fixed. And finally, the upper plastic fixes the upper pole to the top cover plate again through a circle of holes in the pole holes of the top cover plate by adopting an injection molding process, and isolates the upper pole from the top cover plate. The utility model discloses power battery top cap structure can be simplified, power battery space utilization is improved, the insulating properties of reinforcing apron.
Description
Technical Field
The utility model relates to a power battery field relates to a power battery utmost point post subassembly, power battery top cap and power battery especially, relates to an utmost point post subassembly suitable for power battery top cap.
Background
With the promotion and popularization of new energy automobiles, power batteries driving the new energy automobiles are concerned, and the continuous improvement of the quality requirements of the power batteries relates to the continuous optimization of the performance of power battery top covers and pole assemblies in the top covers. At present, the top cover of the power battery has various structures, such as an injection molding structure and a riveting and welding structure, and the pole component of the top cover structure is unstable in assembly, complex in structure and complex in processing technology, so that the top cover of the power battery has high cost and high weight; the traditional top cover structure occupies too much space inside and outside the power battery due to excessive poles, so that the capacity density of the power battery is reduced; the pole of the top cover structure is solid, so that the weight of the power battery is increased.
Through the retrieval, patent document CN209626263U discloses a top sheet, the anodal post, the negative pole post, insulating plastic part and electrically conductive plastic part, the top sheet is provided with anodal mounting hole and negative pole mounting hole, the anodal post passes the anodal mounting hole and is connected with electrically conductive plastic part, the negative pole post passes the negative pole mounting hole and is connected with insulating plastic part, the anodal post includes anodal post body and the anodal post base of being connected with anodal post body, the upper portion of anodal post body is provided with first bellying, anodal post body and anodal post base junction are provided with the second bellying, the anodal post body, anodal post base, first bellying and second bellying are die-casting integrated into one piece structure, form first recess between first bellying, anodal post body and the second bellying. Adopt integrated into one piece's structure among the prior art, can hinder the stress strength and the ability of overflowing of battery top cap to the sealing characteristic and the insulating properties of utmost point post among this prior art do not obtain improving, and electric creepage distance is shorter.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a power battery pole post subassembly, power battery top cap and power battery.
According to the utility model provides a pair of power battery pole column subassembly, include: a first pole assembly and a second pole assembly;
the first pole post assembly comprises first upper plastic, a first upper pole post, a first lower pole post, a first upper plastic injection molding hole, a first pole post hole and a first lower plastic hole, the first upper plastic is used for injection molding, connecting and fixing the first upper pole post and a top cover plate where the first pole post hole is located through the first upper plastic injection molding hole, and the first lower pole post is welded and connected to the top cover plate through the first lower plastic hole and the first pole post hole; the edge of the second lower pole is in a multi-petal structure, a certain gap is formed between every two petals, a circular hole is formed in the geometric center of the second lower pole, and a clamping hook is arranged below the circular hole; the first upper plastic injection molding hole is arranged around the periphery of the first pole column hole;
the second upper plastic is used for connecting and fixing the second upper pole and the top cover plate where the second pole hole is located through the second upper plastic injection hole, and the second lower pole is welded and connected to the top cover plate through the second upper plastic injection hole and the second pole hole; the edge of the second lower pole is in a petal shape and is provided with a plurality of bulges and a plurality of notches, and a circular hole is formed in the geometric center of the second lower pole; the second upper plastic injection molding hole is arranged around the periphery of the second pole hole.
Preferably, still include boss, first sealing washer on the first utmost point post and the boss on the first utmost point post, boss and the first middle hole looks adaptation of going up the plastic on the first utmost point post, first sealing washer is installed at first utmost point post downthehole, and boss setting is on first utmost point post on the first utmost point post, and first plastic hole and first utmost point post hole are passed in the boss part on the first utmost point post.
Preferably, the pole socket further comprises a second upper pole upper boss, a second sealing ring and a second lower pole upper boss, the second upper pole upper boss is matched with the second upper plastic middle hole, the second sealing ring is installed in the second pole hole, the second lower pole upper boss is arranged on the second lower pole, and the second lower pole upper boss partially penetrates through the second lower plastic hole and the second pole hole.
Preferably, the first upper pole is arranged above the first sealing ring, and the first upper pole compresses and fixes the first sealing ring on the top cover plate; the second upper pole is arranged above the second sealing ring and compresses and fixes the second sealing ring on the top cover plate.
Preferably, the pole socket further comprises a first upper pole lower boss, a first lower pole upper boss hole, a second pole lower boss and a second lower pole upper boss hole, wherein the first upper pole lower boss is connected with the first lower pole upper boss hole in an embedded manner, and the second pole lower boss is connected with the second lower pole upper boss hole in an embedded manner.
Preferably, the inner parts of the upper boss of the first lower pole column and the upper boss of the second lower pole column are hollow, and the wall thickness of the top parts of the upper boss of the first lower pole column and the upper boss of the second lower pole column is 0.1-5 mm.
Preferably, the boss hole on the first lower pole column and the boss hole on the second lower pole column comprise a circular shape, a circular and key groove shape, an oval shape or a runway shape.
Preferably, the first upper pole and the second upper pole have a square, circular, oval or racetrack shape.
Preferably, when the first upper plastic and the second upper plastic are used for the cathode of the power battery, insulating materials are selected; when the first upper plastic and the second upper plastic are used for the anode of the power battery, an insulating material or a material with weak current is selected.
According to the utility model provides a pair of power battery top cap contains foretell power battery utmost point post subassembly.
According to the utility model provides a pair of power battery contains foretell power battery top cap.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. through adopting to mould plastics and add welded utmost point post subassembly structure, on the basis of guaranteeing power battery utmost point post subassembly intensity and leakproofness, simplify power battery utmost point post subassembly structure, alleviate power battery top cap weight, reduce power battery top cap cost, improve power battery inside and outside space utilization, improve power battery energy density.
2. Through setting up utmost point post and utmost point post down into hollow, utmost point post part passes the top cap piece down to the reduction occupies power battery inside and outside high space, reserves more high spaces for power battery inside, has improved power battery's energy density.
3. Through adopting injection structure in utmost point post subassembly, can effectively promote utmost point post subassembly's sealing characteristic and insulating characteristic, increase electric creepage distance, make the battery can use wantonly in kilovolt rank's electrical power generating system.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is an exploded view of the structure of the top cover of the power battery of the present invention;
fig. 2 is a schematic structural diagram of a top cover of a power battery of the present invention;
fig. 3 is a schematic structural section view of the top cover of the power battery of the present invention;
fig. 4 is an enlarged sectional view a of the first pole assembly of the top cap of the power battery of the present invention;
fig. 5 is an enlarged sectional view B of a second pole assembly of the top cover of the power battery of the present invention;
fig. 6 is a structural section view of the power battery of the present invention;
fig. 7 is an exploded view of the structure of the power battery of the present invention;
fig. 8 is an enlarged sectional view of another embodiment of the first pole assembly of the power battery of the present invention;
fig. 9 is an enlarged cross-sectional view of another embodiment of the first pole assembly of the top cap of the power battery of the present invention;
fig. 10 is an enlarged cross-sectional view of another embodiment of the second pole assembly of the top cap of the power battery of the present invention.
In the figure:
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a power battery utmost point post subassembly, including first utmost point post subassembly 1 and second utmost point post subassembly 2, first utmost point post subassembly 1 sets up with second utmost point post subassembly 2 symmetry.
The first pole assembly 1 comprises a first upper plastic 11, a first upper pole 12, a first sealing ring 13, a first lower pole 14, a first lower pole upper boss 141, a first upper plastic injection molding hole 31, a first pole hole 33 and a first lower plastic hole 41; in addition, the 2 nd pole assembly includes a second upper plastic 21, a second upper pole 22, a second sealing ring 2, a second lower pole 24, a second lower pole upper boss 241, a second upper plastic injection molding hole 32, a second pole hole 34 and a second lower plastic hole 42.
As shown in fig. 2, the top cover of the power battery further includes a top cover plate 3 and a lower plastic 4, the lower plastic 4 is assembled below the top cover plate 3, the top cover plate 3 is provided with an inwardly concave hollow pole hole, which includes a first pole hole 33 and a second pole hole 34, and a plurality of small through holes, which include a first upper plastic injection molding hole 31 and a second upper plastic injection molding hole 32, are provided on the inwardly concave platform of the first pole hole 33 and the second pole hole 34.
Further, as shown in fig. 3-5, the first sealing ring 13 is assembled in the first pole hole 33 of the top cover plate 3, the first upper pole 12 is pressed above the first sealing ring 13, the first lower pole upper boss 141 of the first lower pole 14 partially penetrates through the first lower plastic hole 41 of the lower plastic 4 and the first pole hole 33 of the top cover plate 3 and then is welded to the top cover plate 3 together with the first upper pole 12, the first upper pole 12 compresses and fixes the first sealing ring 13 to the top cover plate 3, and finally the first upper plastic 11 passes through the first upper plastic injection hole 31 of the top cover plate 3 to fix the first pole 12 and the top cover plate 3 by injection molding, and the first upper pole 12 and the top cover plate 3 are isolated from each other, thereby forming the first pole assembly 1.
And further, assembling the second sealing ring 23 in the second pole post 34 of the top cover plate 3, pressing the second upper pole post 22 above the second sealing ring 23, welding the second upper pole post 22 to the top cover plate 3 after the second lower pole post upper boss 241 part of the second lower pole post 24 passes through the second lower plastic hole 43 of the lower plastic 4 and the second pole post hole 34 of the top cover plate 3, compressing and fixing the second sealing ring 23 on the top cover plate 3 by the second upper pole post 22, and finally injection-molding and connecting and fixing the second upper pole post 22 and the top cover plate 3 by the second upper plastic injection hole 33 of the top cover plate 3 by the second upper plastic 21, and forming isolation between the second upper pole post 22 and the top cover plate 3, thereby forming the second pole post assembly 2.
When the first pole post component 1 and the second pole post component are formed, the lower plastic 4 is fixed below the top cover plate 3. The edges of the first upper pole post 12 and the second upper pole post 22 are in a multi-lobe structure, and are provided with four bulges with larger edge diameters and a notch with smaller edge diameters.
As shown in fig. 6 and 7, the utility model provides a power battery, which comprises a first adaptor sheet 5, a first tab 6, a second adaptor sheet 7, a second tab 8 and a bare cell 9; wherein, the first utmost point post 14 of the first utmost point post subassembly 1 of power battery top cap passes through first adaptor piece 5 welded connection with the first utmost point ear 6 of the naked electric core 9 of power battery, and the second utmost point post 24 of the second utmost point post subassembly 2 of power battery top cap passes through second adaptor piece 7 welded connection with the second utmost point ear 8 of the naked electric core 9 of power battery, then in packing into casing 10, 3 welded connection of top cap piece of casing 10 power battery top cap.
The utility model discloses aPreferred embodiment(s) of the inventionFor further explanation.
As shown in fig. 9, based on the basic embodiment, a more preferable improvement is made, a first upper pole lower boss 121 is disposed at the bottom of the first upper pole 12, a first lower pole upper boss hole 142 is disposed on the first lower pole upper boss 141, and the first upper pole lower boss 121 and the first lower pole upper boss hole 142 are assembled and then welded.
As shown in fig. 10, a second upper pole lower boss 221 is disposed at the bottom of the second upper pole 22, a second lower pole upper boss hole 242 is disposed on the second lower pole upper boss 241, and the second upper pole lower boss 221 and the second lower pole upper boss hole 242 are assembled and then welded.
The utility model discloses aVariation exampleFor further explanation.
In the preferred embodiment, the boss holes in the first lower pole upper boss hole 142 and the second lower pole upper boss hole 242 are circular; in one variation, the boss hole may be in the shape of a circular plus key slot, an oval, or a racetrack.
In the basic embodiment, the outer shapes of the upper bosses of the first upper pole post 12 and the second upper pole post 22 are circular; in yet another variation, the upper boss may be square, oval, or racetrack in shape.
In another variation, the first upper pole 12, the second upper pole 22, the first lower pole 14, the second lower pole 24 and the top cover plate 3 may be made of stainless steel or aluminum alloy.
In another variation, a circular hole is disposed at the geometric center of the first pole post 12 and the second pole post 22, and a hook is disposed below the circular hole, and the hook may be in the shape of a cone, a T, or the like.
In a fourth modification, as shown in fig. 8, the height of the first upper pole post 12 in the first pole post assembly is lower than that of the first upper pole post 12 shown in fig. 4, so as to save more height space inside and outside the power battery.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A power battery post assembly, comprising: a first pole assembly (1) and a second pole assembly (2);
the first pole post assembly (1) comprises first upper plastic (11), a first upper pole post (12), a first lower pole post (14), a first upper plastic injection molding hole (31), a first pole post hole (33) and a first lower plastic hole (41), the first upper plastic (11) is used for injection-molding, connecting and fixing the first upper pole post (12) and the top cover plate (3) where the first pole post hole (33) is located through the first upper plastic injection molding hole (31), and the first lower pole post (14) is welded and connected to the top cover plate (3) through the first lower plastic hole (41) and the first pole post hole (33);
the edge of the first upper pole (12) is in a petal shape and is provided with a plurality of bulges and a plurality of notches, a round hole is arranged at the geometric center of the first upper pole (12), and a clamping hook is arranged below the round hole;
the first upper plastic injection molding hole (31) is arranged around the periphery of the first pole column hole (33);
the second pole column assembly (2) comprises a second upper plastic (21), a second upper pole column (22), a second lower pole column (24), a second upper plastic injection molding hole (32), a second pole column hole (34) and a second lower plastic hole (42), the second upper plastic (21) is used for connecting and fixing the second upper pole column (22) and the top cover plate (3) where the second pole column hole (34) is located through the second upper plastic injection molding hole (32), and the second lower pole column (24) is welded and connected to the top cover plate (3) through the second upper plastic injection molding hole (32) and the second pole column hole (34);
the edge of the second lower pole column (24) is of a multi-petal structure, a certain gap is formed between every two petals, a circular hole is formed in the geometric center of the second lower pole column (24), and a clamping hook is arranged below the circular hole;
the second upper plastic injection molding hole (32) is arranged around the periphery of the second pole hole (34).
2. The power battery post assembly according to claim 1, further comprising a first upper post upper boss adapted to a middle hole of the first upper plastic (11), a first seal ring (13), and a first lower post upper boss (141), wherein the first seal ring (13) is installed in the first post hole (33), the first lower post upper boss (141) is disposed on the first lower post (14), and a portion of the first lower post upper boss (141) passes through the first lower plastic hole (41) and the first post hole (33);
still include the second on the utmost point post boss, second sealing washer (23) and second down utmost point post on boss (241), the second on the utmost point post boss and the second on the utmost point post go up the intermediate hole looks adaptation of plastic (21), second sealing washer (23) are installed in second utmost point post hole (34), the second is down utmost point post on boss (241) set up under the second on utmost point post (24), second is down utmost point post on boss (241) part pass second down plastic hole (42) and second utmost point post hole (34).
3. The power battery post assembly according to claim 2, characterized in that the first upper post (12) is arranged above the first sealing ring (13), and the first upper post (12) compresses and fixes the first sealing ring (13) to the top cover sheet (3); the second upper pole column (22) is arranged above the second sealing ring (23), and the second upper pole column (22) compresses and fixes the second sealing ring (23) on the top cover plate (3).
4. The power battery pole column assembly according to claim 1, further comprising a first upper pole column lower boss (121), a first lower pole column upper boss hole (142), a second pole column lower boss (221) and a second lower pole column upper boss hole (242), wherein the first upper pole column lower boss (121) is connected with the first lower pole column upper boss hole (142) in an embedded manner, and the second pole column lower boss (221) is connected with the second lower pole column upper boss hole (242) in an embedded manner.
5. The power battery pole post assembly according to claim 2, wherein the first lower pole upper boss (141) and the second lower pole upper boss (241) are hollow inside, and the top wall thickness of the first lower pole upper boss (141) and the second lower pole upper boss (241) is 0.1mm-5 mm.
6. The power battery post assembly of claim 4, wherein the first lower post upper boss hole (142) and the second lower post upper boss hole (242) comprise a circular, a circular plus key groove shape, an oval shape, or a racetrack shape.
7. The power battery post assembly according to claim 1, characterized in that the outer shape of the bosses on the first upper post (12) and the second upper post (22) comprises a square, a circle, an ellipse or a racetrack shape.
8. The power battery pole column assembly according to claim 1, wherein when the first upper plastic (11) and the second upper plastic (21) are made of the power battery cathode, an insulating material is selected; when the first upper plastic (11) and the second upper plastic (21) are made of the power battery positive electrode, an insulating material or a material with weak current is selected.
9. A power cell header comprising the power cell pole assembly of any of claims 1-8.
10. A power cell comprising the power cell cap of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021739309.XU CN213026404U (en) | 2020-08-19 | 2020-08-19 | Power battery pole column assembly, power battery top cover and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021739309.XU CN213026404U (en) | 2020-08-19 | 2020-08-19 | Power battery pole column assembly, power battery top cover and power battery |
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| Publication Number | Publication Date |
|---|---|
| CN213026404U true CN213026404U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021739309.XU Active CN213026404U (en) | 2020-08-19 | 2020-08-19 | Power battery pole column assembly, power battery top cover and power battery |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363681A (en) * | 2021-06-11 | 2021-09-07 | 刘义 | Positive electrode assembly, negative electrode assembly, battery cover plate and manufacturing method of battery cover plate |
| CN113363680A (en) * | 2021-06-11 | 2021-09-07 | 刘义 | Positive pole subassembly, negative pole subassembly and battery cover board subassembly |
| CN113594596A (en) * | 2021-06-17 | 2021-11-02 | 济宁市海富电子科技有限公司 | Battery cover plate assembly, battery and assembly method of battery cover plate assembly |
| CN113725533A (en) * | 2021-09-03 | 2021-11-30 | 宜春市骏智机电科技有限公司 | New energy battery apron assembly subassembly |
-
2020
- 2020-08-19 CN CN202021739309.XU patent/CN213026404U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363681A (en) * | 2021-06-11 | 2021-09-07 | 刘义 | Positive electrode assembly, negative electrode assembly, battery cover plate and manufacturing method of battery cover plate |
| CN113363680A (en) * | 2021-06-11 | 2021-09-07 | 刘义 | Positive pole subassembly, negative pole subassembly and battery cover board subassembly |
| CN113594596A (en) * | 2021-06-17 | 2021-11-02 | 济宁市海富电子科技有限公司 | Battery cover plate assembly, battery and assembly method of battery cover plate assembly |
| CN113594596B (en) * | 2021-06-17 | 2023-09-15 | 徐州海富轻金属科技有限公司 | Battery cover plate assembly, battery and assembly method of battery cover plate assembly |
| CN113725533A (en) * | 2021-09-03 | 2021-11-30 | 宜春市骏智机电科技有限公司 | New energy battery apron assembly subassembly |
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Address after: Room b105, 1st floor, building 4, 1255 Jinhai Road, Pudong New Area Free Trade Zone, Shanghai 200135 Patentee after: SHANGHAI RUIPU ENERGY Co.,Ltd. Patentee after: REPT BATTERO Energy Co., Ltd. Address before: Room b105, 1st floor, building 4, 1255 Jinhai Road, Pudong New Area Free Trade Zone, Shanghai 200135 Patentee before: SHANGHAI RUIPU ENERGY Co.,Ltd. Patentee before: RUIPU ENERGY Co.,Ltd. |