CN212136493U - Positive negative pole apron structure of cylinder battery - Google Patents
Positive negative pole apron structure of cylinder battery Download PDFInfo
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- CN212136493U CN212136493U CN202021118571.2U CN202021118571U CN212136493U CN 212136493 U CN212136493 U CN 212136493U CN 202021118571 U CN202021118571 U CN 202021118571U CN 212136493 U CN212136493 U CN 212136493U
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- negative pole
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- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims 1
- 239000000178 monomer Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a positive and negative pole cover plate structure of a cylindrical battery, which comprises a positive pole cover plate and a negative pole cover plate; the positive pole cover plate comprises a positive pole substrate, a positive pole post and a positive pole current collector, a stepped hole is formed in the center of the positive pole substrate, the diameter of the upper portion of the stepped hole is larger than that of the lower portion of the stepped hole, a liquid injection hole is formed in the lower portion of the stepped hole, the positive pole post is of a stepped cylindrical structure, and the lower portion of the positive pole post is clamped in the upper portion of the stepped hole; the negative electrode cover plate comprises a negative electrode substrate, a negative electrode pole, an insulating gasket, a stopping frame and a negative electrode current collecting piece, wherein the insulating gasket, the negative electrode substrate, the stopping frame and the negative electrode current collecting piece are clamped between the top and the bottom of the negative electrode pole. The utility model discloses anodal utmost point post and notes liquid hole gasket formula structure as an organic whole of anodal apron, anodal utmost point post are nested formula structure, negative pole post and are the rivet structure for stretch out to the outer height-adjustable of corresponding base plate, promoted the flexibility of battery inner space adjustment, thereby reach the purpose that promotes the monomer battery capacity.
Description
Technical Field
The utility model relates to a power battery field specifically is a positive negative pole cover plate structure of cylinder battery.
Background
With the development of society, people pay more and more attention to environmental problems, new energy automobile technology is accepted by more and more consumers, and new energy automobiles are expected to gradually replace traditional automobiles in 2020. With the increasing demand of new energy vehicles year by year, the requirements on the safety and reliability of batteries are higher and higher. The improvement of the battery sealing performance and the single battery capacity becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a positive negative pole cover plate structure of cylinder battery, the positive utmost point post of positive pole cover plate and the gasket formula structure as an organic whole of annotating the liquid hole, positive utmost point post be nested formula structure, negative pole post are the rivet structure for stretch out to correspond the outer height-adjustable of base plate, promoted the flexibility of the inside space adjustment of battery, thereby reach the purpose that promotes the battery cell capacity.
The technical scheme of the utility model is that:
a positive and negative cover plate structure of a cylindrical battery comprises a positive cover plate and a negative cover plate; the positive pole cover plate comprises a positive pole substrate, a positive pole column and a positive pole current collector, a stepped hole is formed in the center of the positive pole substrate, the diameter of the upper portion of the stepped hole is larger than that of the lower portion of the stepped hole, the lower portion of the stepped hole in the positive pole substrate is a liquid injection hole, the positive pole column is of a stepped cylindrical structure, the diameter of the lower portion of the positive pole column is equal to that of the upper portion of the stepped hole, the lower portion of the positive pole column is clamped in the upper portion of the stepped hole, and the positive pole current collector is connected to the positive pole substrate; the negative pole apron including negative pole base plate, negative pole utmost point post, insulating gasket, locking frame and negative pole current collector, the central point of negative pole base plate put and seted up the shoulder hole, and the diameter on shoulder hole upper portion is greater than the diameter of shoulder hole lower part, the negative pole utmost point post be the rivet structure, insulating gasket's upper portion support on negative pole base plate's surface, insulating gasket's lower part passes the shoulder hole, the hole that insulating gasket was passed to middle part and bottom of negative pole utmost point post, the top of negative pole utmost point post support on insulating gasket's upper portion, outside the negative pole base plate was all stretched out to insulating gasket's upper portion and negative pole utmost point post's top promptly, locking frame and negative pole current collector all suit on negative pole utmost point post's middle part and the card is arranged in between negative pole utmost point post.
The negative pole post is of an inverted riveting assembly structure.
The riveting structure is characterized in that a pressing plate is sleeved in the middle of the negative pole, and the pressing plate is clamped between the bottom of the negative pole and the negative current collecting plate and used for bearing the riveting structure of the negative pole.
Insulating pad including insulation board and insulating pad, insulating pad be ladder cylindrical structure, and the external diameter on insulating pad upper portion is greater than the external diameter of insulating pad lower part, the hole of insulating pad equals with the diameter at negative pole utmost point post middle part, the external diameter of insulating pad lower part equals the diameter of negative pole base plate ladder hole lower part, the lower part of insulating pad stretch into the lower part in negative pole base plate ladder hole, the upper portion of insulating pad support on the step face in negative pole base plate ladder hole, the middle part of insulation board outer wall is provided with protruding edge, the protruding edge of insulation board supports on the surface of negative pole base plate, the insulation board suit stretch into the upper portion in negative pole base plate ladder hole in the periphery and the lower part of insulation board on insulating pad upper portion, the hole of insulation board be the ladder hole, the diameter on ladder hole upper portion is greater than the diameter of ladder hole lower part, the step face of ladder hole and the top terminal surface of insulating pad are located same, the top of negative pole post support on the ladder face of ladder hole and the top end face of insulating pad, the middle part of negative pole post pass the lower part of insulating pad.
The shortest distance between the end face of the top of the cathode pole and the outer surface of the cathode substrate is greater than the shortest distance between the end face of the upper part of the insulating plate and the outer surface of the cathode substrate.
The utility model has the advantages that:
the positive pole column of the utility model can be used as a sealing sheet of a battery liquid injection hole to play a sealing function and also used as a battery positive pole column to be connected with a circuit; the utility model discloses an anodal utmost point post and positive base plate are nested formula connection structure, negative terminal post and negative pole apron for anti-riveting connection structure, can adjust anodal utmost point post and negative terminal post and stretch out to the outer height of corresponding base plate according to battery module or battery inner space demand, make structural design more nimble.
Drawings
Fig. 1 is an exploded view of the positive electrode cover plate of the present invention.
Fig. 2 is a cross-sectional view of the positive electrode cover plate of the present invention.
Fig. 3 is an exploded view of the negative electrode cover plate of the present invention.
Fig. 4 is a cross-sectional view of the negative electrode lid plate of the present invention.
Fig. 5 is a schematic structural diagram of the present invention assembled on a cylindrical battery.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, a positive and negative cover plate structure of a cylindrical battery comprises a positive cover plate 1 and a negative cover plate 2;
the positive electrode cover plate 1 comprises a positive electrode substrate 11, a positive electrode pole 12 and a positive electrode current collecting piece 13, wherein a stepped hole is formed in the center of the positive electrode substrate 11, the diameter of the upper portion of the stepped hole is larger than that of the lower portion of the stepped hole, a liquid injection hole 14 is formed in the lower portion of the stepped hole in the positive electrode substrate, the positive electrode pole 12 is of a stepped cylindrical structure, the diameter of the lower portion of the positive electrode pole 12 is equal to that of the upper portion of the stepped hole, the lower portion of the positive electrode pole 12 is clamped in the upper portion of the stepped hole, the positive electrode current collecting piece 13 is connected to the positive electrode substrate 11, the height of the portion, extending out of the positive electrode substrate 11, of the positive electrode pole 12;
the negative electrode cover plate 2 comprises a negative electrode substrate 21, a negative electrode post 22, an insulating plate 23, an insulating pad 24, a stop frame 25, a negative electrode current collecting piece 26 and a pressing plate 27, wherein a stepped hole is formed in the center of the negative electrode substrate 21, the diameter of the upper part of the stepped hole is larger than that of the lower part of the stepped hole, the negative electrode post 22 is of a rivet structure assembled by reverse riveting, the insulating pad 24 is of a stepped cylindrical structure, the outer diameter of the upper part of the insulating pad 24 is larger than that of the lower part of the insulating pad 24, the inner hole of the insulating pad 24 is equal to that of the middle part of the negative electrode post 22, the outer diameter of the lower part of the insulating pad 24 is equal to that of the lower part of the stepped hole of the negative electrode substrate 21, the lower part of the insulating pad 24 extends into the lower part of the stepped hole of the negative electrode substrate 21, the upper part of, the insulating plate 23 is sleeved on the periphery of the upper part of the insulating pad 24, the lower part of the insulating plate 23 extends into the upper part of the stepped hole of the cathode substrate 21, the inner hole of the insulating plate 24 is a stepped inner hole, the diameter of the upper part of the stepped inner hole is larger than that of the lower part of the stepped inner hole, the stepped surface of the stepped inner hole and the top end surface of the insulating pad 24 are positioned at the same horizontal height, the top of the cathode pole 22 is supported on the stepped surface of the stepped inner hole and the top end surface of the insulating pad 24, the middle part of the cathode pole 22 penetrates through the lower part of the insulating pad 24, the top of the cathode pole 22 extends out of the cathode substrate 21, the extending height of the cathode pole 22 is 1.5-7mm, the shortest distance from the end surface of the top of the cathode pole 22 to the outer surface of the cathode substrate 21 is larger than that from the end surface of the upper part of the insulating plate 23 to the outer surface of the cathode, the stop frame 25 is used for insulation protection between the winding core and the negative cover plate and simultaneously prevents the winding core from shaking in the battery, the negative current collecting piece 26 is of a battery internal overflowing structure, and the pressing plate 27 is of a riveting force bearing structure during riveting.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A positive and negative cover plate structure of a cylindrical battery comprises a positive cover plate and a negative cover plate; the method is characterized in that: the positive pole cover plate comprises a positive pole substrate, a positive pole column and a positive pole current collector, a stepped hole is formed in the center of the positive pole substrate, the diameter of the upper portion of the stepped hole is larger than that of the lower portion of the stepped hole, the lower portion of the stepped hole in the positive pole substrate is a liquid injection hole, the positive pole column is of a stepped cylindrical structure, the diameter of the lower portion of the positive pole column is equal to that of the upper portion of the stepped hole, the lower portion of the positive pole column is clamped in the upper portion of the stepped hole, and the positive pole current collector is connected to the positive pole substrate; the negative pole apron including negative pole base plate, negative pole utmost point post, insulating gasket, locking frame and negative pole current collector, the central point of negative pole base plate put and seted up the shoulder hole, and the diameter on shoulder hole upper portion is greater than the diameter of shoulder hole lower part, the negative pole utmost point post be the rivet structure, insulating gasket's upper portion support on negative pole base plate's surface, insulating gasket's lower part passes the shoulder hole, the hole that insulating gasket was passed to middle part and bottom of negative pole utmost point post, the top of negative pole utmost point post support on insulating gasket's upper portion, outside the negative pole base plate was all stretched out to insulating gasket's upper portion and negative pole utmost point post's top promptly, locking frame and negative pole current collector all suit on negative pole utmost point post's middle part and the card is arranged in between negative pole utmost point post.
2. The positive and negative electrode cover plate structure for cylindrical batteries according to claim 1, wherein: the negative pole post is of an inverted riveting assembly structure.
3. The positive and negative electrode cover plate structure for cylindrical batteries according to claim 1, wherein: the riveting structure is characterized in that a pressing plate is sleeved in the middle of the negative pole, and the pressing plate is clamped between the bottom of the negative pole and the negative current collecting plate and used for bearing the riveting structure of the negative pole.
4. The positive and negative electrode cover plate structure for cylindrical batteries according to claim 1, wherein: insulating pad including insulation board and insulating pad, insulating pad be ladder cylindrical structure, and the external diameter on insulating pad upper portion is greater than the external diameter of insulating pad lower part, the hole of insulating pad equals with the diameter at negative pole utmost point post middle part, the external diameter of insulating pad lower part equals the diameter of negative pole base plate ladder hole lower part, the lower part of insulating pad stretch into the lower part in negative pole base plate ladder hole, the upper portion of insulating pad support on the step face in negative pole base plate ladder hole, the middle part of insulation board outer wall is provided with protruding edge, the protruding edge of insulation board supports on the surface of negative pole base plate, the insulation board suit stretch into the upper portion in negative pole base plate ladder hole in the periphery and the lower part of insulation board on insulating pad upper portion, the hole of insulation board be the ladder hole, the diameter on ladder hole upper portion is greater than the diameter of ladder hole lower part, the step face of ladder hole and the top terminal surface of insulating pad are located same, the top of negative pole post support on the ladder face of ladder hole and the top end face of insulating pad, the middle part of negative pole post pass the lower part of insulating pad.
5. The positive and negative electrode cover plate structure for cylindrical batteries according to claim 4, wherein: the shortest distance between the end face of the top of the cathode pole and the outer surface of the cathode substrate is greater than the shortest distance between the end face of the upper part of the insulating plate and the outer surface of the cathode substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118571.2U CN212136493U (en) | 2020-06-16 | 2020-06-16 | Positive negative pole apron structure of cylinder battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118571.2U CN212136493U (en) | 2020-06-16 | 2020-06-16 | Positive negative pole apron structure of cylinder battery |
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| Publication Number | Publication Date |
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| CN212136493U true CN212136493U (en) | 2020-12-11 |
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| CN202021118571.2U Active CN212136493U (en) | 2020-06-16 | 2020-06-16 | Positive negative pole apron structure of cylinder battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968234A (en) * | 2021-01-22 | 2021-06-15 | 刘昌国 | Lithium battery shell, lithium battery positive electrode cover plate and lithium battery |
| WO2023236410A1 (en) * | 2022-06-09 | 2023-12-14 | 湖北亿纬动力有限公司 | Internal battery terminal connection structure and battery |
-
2020
- 2020-06-16 CN CN202021118571.2U patent/CN212136493U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968234A (en) * | 2021-01-22 | 2021-06-15 | 刘昌国 | Lithium battery shell, lithium battery positive electrode cover plate and lithium battery |
| WO2023236410A1 (en) * | 2022-06-09 | 2023-12-14 | 湖北亿纬动力有限公司 | Internal battery terminal connection structure and battery |
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