CN219677514U - Square battery structure - Google Patents
Square battery structure Download PDFInfo
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- CN219677514U CN219677514U CN202321150897.7U CN202321150897U CN219677514U CN 219677514 U CN219677514 U CN 219677514U CN 202321150897 U CN202321150897 U CN 202321150897U CN 219677514 U CN219677514 U CN 219677514U
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- positive electrode
- negative electrode
- plastic
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- 239000004033 plastic Substances 0.000 claims description 76
- 238000007789 sealing Methods 0.000 claims description 20
- 238000001746 injection moulding Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- LDVVMCZRFWMZSG-UHFFFAOYSA-N captan Chemical compound C1C=CCC2C(=O)N(SC(Cl)(Cl)Cl)C(=O)C21 LDVVMCZRFWMZSG-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000004146 energy storage Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- 238000010073 coating (rubber) Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to a square battery structure which comprises a positive electrode cover plate, a negative electrode cover plate and a shell, wherein the positive electrode cover plate is arranged on the end face of one end of the shell, and the negative electrode cover plate is arranged on the end face of the other end of the shell. The anode and the cathode are led out from the two ends of the battery, so that the shell can be lengthened to any size according to actual use requirements, has the characteristics of large capacity and capacity of being beneficial to PACK grouping, is particularly suitable for occasions such as automobiles and energy storage, can greatly improve the space utilization rate of the energy storage occasion, further effectively improves the production efficiency of the energy storage power station, and can effectively save the space cost and the production cost. The utility model has the advantages of simple structure, reliable performance and simple processing technology, ensures the performance of the product, can greatly reduce the production cost and better meets the requirement of actual use.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a square battery structure.
Background
Along with the development of technology, a power battery is becoming more and more interesting as an energy device, and is widely applied in the fields of mobile phones, electric automobiles, electric tools and the like. The top cover of the square power battery (comprising a lithium ion battery and a sodium ion battery) has various structural forms, and a copper part and an aluminum part of a cathode pole with more applications are subjected to friction welding, and then the cathode pole is machined for forming; the positive electrode is machined by a cold heading machine, and the injection molding PPS plastic is adopted to block the pole from falling off and forming in the assembly stage, so that the performance is good, but the machining process of the top cover is complex, the cost is high, and the actual use requirement is hardly met.
Disclosure of Invention
Based on the above, the utility model provides a square battery structure, which aims to solve the technical problems that the existing square battery cover plate is complex in processing technology, high in cost, difficult to meet the actual use requirement and the like. The utility model has the advantages of simple structure, reliable performance and simple processing technology, ensures the performance of the product, can greatly reduce the production cost and better meets the requirement of actual use.
In order to achieve the above purpose, the embodiment of the present utility model proposes the following technical solutions:
the square battery structure is suitable for a shell battery and comprises a positive electrode cover plate, a negative electrode cover plate and a shell, wherein the positive electrode cover plate is arranged on the end face of one end of the shell, and the negative electrode cover plate is arranged on the end face of the other end of the shell;
the positive electrode cover plate comprises positive electrode upper plastic, a positive electrode column, a positive electrode sealing ring, a positive electrode top cover plate, positive electrode lower plastic, a first positive electrode connecting sheet and a second positive electrode connecting sheet; the positive pole top cover plate is provided with a positive pole column hole, a positive pole column sleeve is circumferentially arranged on the periphery of the positive pole column hole, and a first step is arranged between the positive pole column hole and the positive pole column sleeve;
the positive electrode sealing ring is arranged on the first step, the positive electrode column is arranged on the positive electrode sealing ring, and a first gap is arranged between the positive electrode column and the positive electrode column sleeve; the positive pole plastic is sleeved on the positive pole post sleeve, and the positive pole plastic is abutted against the positive pole post; the plastic under the positive pole butt in the bottom surface of positive pole top cover piece, first positive connection piece pass the plastic under the positive pole with the positive pole post is connected, the second positive connection piece with first positive connection piece is connected.
As a preferred implementation mode, the plastic on the positive electrode is arranged in a matching way with the first gap, and the plastic on the positive electrode is respectively abutted against the side face of the positive electrode post and the bottom end of the positive electrode post.
As a preferable embodiment, the positive pole sleeve and the positive pole top cover sheet are integrally formed, and a plurality of first side holes are circumferentially formed in the positive pole sleeve; and the plastic on the positive electrode is sleeved on the positive electrode post sleeve through injection molding.
As a preferred embodiment, a first convex hull is arranged on the side surface, close to the positive pole, of the first positive pole connecting piece, and the first positive pole connecting piece is connected with the positive pole through the first convex hull.
As a preferred embodiment, the thickness of the first positive electrode connecting sheet is greater than the thickness of the second positive electrode connecting sheet; the first positive electrode connecting sheet is a single-layer aluminum alloy connecting sheet; the second positive electrode connecting sheet is a connecting sheet obtained by folding a plurality of layers of aluminum foils.
As a preferred embodiment, the positive electrode top cover piece is abutted against the end face of the housing; and the plastic under the positive electrode is abutted against the battery core of the shell battery.
As a preferred embodiment, the negative electrode cover plate comprises a negative electrode upper plastic, a negative electrode column, a negative electrode sealing ring, a negative electrode top cover plate, a negative electrode lower plastic, a first negative electrode connecting sheet and a second negative electrode connecting sheet; the negative pole top cover plate is provided with a negative pole column hole, the periphery of the negative pole column hole is circumferentially provided with a negative pole column sleeve, and a second step is arranged between the negative pole column hole and the negative pole column sleeve;
the negative electrode sealing ring is arranged on the second step, the negative electrode column is arranged on the negative electrode sealing ring, and a second gap is arranged between the negative electrode column and the negative electrode column sleeve; the negative electrode upper plastic is sleeved on the negative electrode post sleeve, and the negative electrode upper plastic is abutted against the negative electrode post; the negative pole lower plastic rubber butt in the bottom surface of negative pole top cover piece, first negative pole connection piece pass the negative pole lower plastic rubber with the negative pole post is connected, the second negative pole connection piece with first negative pole connection piece is connected.
As a preferred implementation mode, the plastic on the negative electrode is matched with the second gap, and the plastic on the negative electrode is respectively abutted to the side face of the negative electrode column and the bottom end of the negative electrode column.
As a preferable embodiment, the negative electrode post sleeve and the negative electrode top cover sheet are integrally formed, and a plurality of second side holes are circumferentially formed in the negative electrode post sleeve; and the plastic on the negative electrode is sleeved on the negative electrode post sleeve through injection molding.
As a preferred embodiment, a second convex hull is arranged on the side surface, close to the negative electrode column, of the first negative electrode connecting sheet, and the first negative electrode connecting sheet is connected with the negative electrode column through the second convex hull.
As a preferred embodiment, the thickness of the first negative electrode connection sheet is greater than the thickness of the second negative electrode connection sheet; the first negative electrode connecting sheet is a single-layer oxygen-free copper stamping forming connecting sheet; the second negative electrode connecting sheet is a connecting sheet obtained by folding a plurality of layers of copper foils.
As a preferred embodiment, the negative electrode top cover piece is abutted against the end face of the casing; and the plastic under the negative electrode is abutted against the battery core of the shell battery.
As a preferred embodiment, the case battery is a lithium battery or a sodium battery.
The utility model has the beneficial effects that: the utility model can effectively solve the technical problems that the existing square battery cover plate has complex processing technology, high cost, difficulty in meeting the actual use requirement and the like. The anode and the cathode are led out from the two ends of the battery, so that the shell can be lengthened to any size according to actual use requirements, has the characteristics of large capacity and capacity of being beneficial to PACK grouping, is particularly suitable for occasions such as automobiles and energy storage, can greatly improve the space utilization rate of the energy storage occasion, further effectively improves the production efficiency of the energy storage power station, and can effectively save the space cost and the production cost. The utility model has the advantages of simple structure, reliable performance and simple processing technology, ensures the performance of the product, can greatly reduce the production cost and better meets the requirement of actual use.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a prismatic battery according to an embodiment of the present utility model;
fig. 2 is an exploded view of a positive cap plate of the prismatic battery structure of fig. 1;
fig. 3 is a schematic cross-sectional (AA direction) structural view of a positive electrode cover plate of the prismatic battery structure of fig. 1.
FIG. 4 is an exploded view of the negative cover plate of the prismatic cell structure of FIG. 1;
fig. 5 is a schematic cross-sectional (AA direction) structural view of a negative electrode cap plate of the prismatic battery structure of fig. 1.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Specifically, as shown in fig. 1 to 3, an embodiment of the present utility model provides a square battery structure, which is suitable for a casing battery, and includes a positive electrode cover plate 10, a negative electrode cover plate 20 and a casing 30, wherein the positive electrode cover plate 10 is disposed on an end face of one end of the casing 30, and the negative electrode cover plate 20 is disposed on an end face of the other end of the casing 30;
the positive cover plate 10 comprises positive upper plastic 11, a positive post 12, a positive sealing ring 13, a positive top cover plate 14, positive lower plastic 15, a first positive connecting sheet 16 and a second positive connecting sheet 17; the positive top cover plate 14 is provided with a positive column hole 141, a positive column sleeve 142 is circumferentially arranged on the periphery of the positive column hole 141, and a first step 143 is arranged between the positive column hole 141 and the positive column sleeve 142;
the positive electrode sealing ring 13 is disposed on the first step 143, the positive electrode column 12 is disposed on the positive electrode sealing ring 13, and a first gap (not labeled in the figure) is disposed between the positive electrode column 12 and the positive electrode column sleeve 142; the positive electrode plastic 11 is sleeved on the positive electrode post sleeve 142, and the positive electrode plastic 11 is abutted against the positive electrode post 12; the plastic 15 under the positive electrode is abutted to the bottom surface of the positive electrode top cover plate 14, the first positive electrode connecting sheet 16 passes through the plastic 15 under the positive electrode and is connected with the positive electrode post 12, and the second positive electrode connecting sheet 17 is connected with the first positive electrode connecting sheet 16.
As a preferred embodiment, the plastic 11 on the positive electrode is disposed in a manner of matching with the first gap, and the plastic 11 on the positive electrode is respectively abutted against the side surface of the positive electrode post 12 and the bottom end of the positive electrode post 12. Thus, the positive pole 12 can be well positioned on the positive pole top cover piece 14 through the plastic 11 on the positive pole, and the positive pole can be stopped.
As a preferred embodiment, the positive electrode post sleeve 142 is integrally formed with the positive electrode top cover piece 14, and a plurality of first side holes 1421 are circumferentially formed in the positive electrode post sleeve 142; the plastic 11 on the positive electrode is sleeved on the positive electrode post sleeve 142 through injection molding. In this way, the positive electrode tab cover 142 can ensure the sealability of the positive electrode tab 12; moreover, when the plastic 11 is injected onto the positive electrode, part of the plastic 11 on the positive electrode can be filled in the first side hole 1421, and the plastic 11 on the positive electrode can be firmly fixed on the positive electrode top cover plate 14 without using a fixing fitting, so that the plastic 11 on the positive electrode can better position the positive electrode column 12, and the stopping of the positive electrode column 12 is effectively ensured (namely, the positive electrode column 12 is prevented from falling off by utilizing the shearing resistance of the plastic 11 on the positive electrode).
As a preferred embodiment, a first convex hull 161 is disposed on the side of the first positive electrode connecting piece 16, which is close to the positive electrode post 12, and the first positive electrode connecting piece 16 is connected to the positive electrode post 12 through the first convex hull 161. In this way, by arranging the first convex hull 161, the first positive electrode connecting sheet 16 can be well welded with the positive electrode post 12, and the process is simple.
In the embodiment of the utility model, the positive electrode connecting sheets are arranged as the first positive electrode connecting sheet 16 and the second positive electrode connecting sheet 17, so that the thickness of the first positive electrode connecting sheet 16 can be thicker (the process is convenient to simplify, and the welding connection with the positive electrode post is ensured), and the second positive electrode connecting sheet 17 can be arranged as a sheet (the material can be well saved, the cost can be effectively reduced), and the material can be effectively saved and the cost can be reduced while the process is effectively simplified.
As a preferred embodiment, the thickness of the first positive electrode connecting piece 16 is greater than the thickness of the second positive electrode connecting piece 17; the first positive electrode connecting sheet 16 is a single-layer aluminum alloy connecting sheet; the second positive electrode connecting sheet 17 is a connecting sheet obtained by folding a plurality of layers of aluminum foils.
As a preferred embodiment, the positive electrode top cover sheet 14 is abutted against the end face of the case 30; the plastic 15 under the positive electrode is abutted against the battery core of the shell battery.
In a preferred embodiment, the positive cap sheet 14 is provided with a filling hole 144.
As shown in fig. 4 and 5, the negative cover plate 20 includes a negative upper plastic 21, a negative post 22, a negative sealing ring 23, a negative top cover plate 24, a negative lower plastic 25, a first negative connecting plate 26 and a second negative connecting plate 27; a negative electrode column hole 241 is formed in the negative electrode top cover piece 24, a negative electrode column sleeve 242 is circumferentially arranged on the periphery of the negative electrode column hole 241, and a second step 243 is formed between the negative electrode column hole 241 and the negative electrode column sleeve 242;
the negative electrode sealing ring 23 is disposed on the second step 243, the negative electrode column 22 is disposed on the negative electrode sealing ring 23, and a second gap (not labeled in the figure) is disposed between the negative electrode column 22 and the negative electrode column sleeve 242; the negative electrode upper plastic 21 is sleeved on the negative electrode column sleeve 242, and the negative electrode upper plastic 21 is abutted against the negative electrode column 22; the negative electrode lower plastic 25 is abutted to the bottom surface of the negative electrode top cover piece 24, the first negative electrode connecting piece 26 penetrates through the negative electrode lower plastic 25 to be connected with the negative electrode column 22, and the second negative electrode connecting piece 27 is connected with the first negative electrode connecting piece 26.
As a preferred embodiment, the plastic 21 on the negative electrode is adapted to the second gap, and the plastic 21 on the negative electrode is respectively abutted to the side surface of the negative electrode post 22 and the bottom end of the negative electrode post 22. Thus, the negative electrode post 22 can be well positioned on the negative electrode top cover piece 24 through the plastic 21 on the negative electrode, and the negative electrode post 22 can be stopped.
As a preferred embodiment, the negative electrode cap 242 is integrally formed with the negative electrode top cover piece 24, and a plurality of second side holes 2421 are circumferentially formed in the negative electrode cap 242; the plastic 21 on the negative electrode is sleeved on the negative electrode post sleeve 242 through injection molding. In this way, the negative electrode post cover 242 can ensure the sealability of the negative electrode post 22; moreover, when the negative electrode plastic 21 is injection-molded, part of the negative electrode plastic 21 can be filled in the second side hole 2421, and the negative electrode plastic 21 can be firmly fixed on the negative electrode top cover piece 24 without using a fixing fitting, so that the negative electrode plastic 21 can better position the negative electrode column 22, and the stopping of the negative electrode column 22 is effectively ensured (namely, the negative electrode column 22 is prevented from falling off by utilizing the shearing resistance of the negative electrode plastic 21).
As a preferred embodiment, a second convex hull 261 is provided on the side of the first negative electrode connection piece 26 near the negative electrode post 22, and the first negative electrode connection piece 26 is connected with the negative electrode post 22 through the second convex hull 261. In this way, by providing the second convex hull 261, the first negative electrode connecting piece 26 can be well welded with the negative electrode post 22, and the process is simple.
In the embodiment of the utility model, the negative electrode connecting pieces are arranged as the first negative electrode connecting piece 26 and the second negative electrode connecting piece 27, so that the thickness of the first negative electrode connecting piece 26 can be thicker (the process is convenient to simplify, the welding connection with the negative electrode column is ensured), and the second negative electrode connecting piece 27 can be arranged as a thin sheet (the material can be well saved and the cost can be effectively reduced), and the process can be effectively simplified and the material can be effectively saved and the cost can be reduced.
As a preferred embodiment, the thickness of the first negative electrode connection 26 sheet is greater than the thickness of the second negative electrode connection sheet 27; the first negative electrode connecting sheet 26 is a single-layer oxygen-free copper stamping forming connecting sheet; the second negative electrode connection sheet 27 is a connection sheet obtained by folding a plurality of layers of copper foil.
As a preferred embodiment, the negative cap piece 24 is abutted against the end face of the case 30; the negative electrode lower plastic 21 is abutted against the battery core of the shell battery.
In a preferred embodiment, the negative cap piece 24 is provided with an explosion valve opening 244, and the explosion valve opening 244 is provided with an explosion valve assembly 40.
As a preferred embodiment, the explosion-proof valve assembly 40 includes an explosion-proof valve 41 and an explosion-proof valve protection patch 42, the explosion-proof valve 41 is disposed in the explosion-proof valve hole 244, and the explosion-proof valve protection patch 42 is disposed on a side of the explosion-proof valve 41 away from the negative electrode lower plastic 21.
As a preferred embodiment, the case battery is a lithium battery or a sodium battery.
In the embodiment of the utility model, the positive pole is obtained by integral stamping and forming, the positive top cover sheet is obtained by rubber coating injection molding, the negative pole is obtained by integral stamping and forming of copper-aluminum composite material, the negative top cover sheet is obtained by rubber coating injection molding, and the processing technology is simple and has obvious cost advantage. The shell can be formed by laser welding after being folded by adopting an aluminum plate or by high-frequency welding after being folded, extrusion or stretching according to actual use requirements.
The utility model can effectively solve the technical problems that the existing square battery cover plate has complex processing technology, high cost, difficulty in meeting the actual use requirement and the like. The anode and the cathode are led out from the two ends of the battery, so that the shell can be lengthened to any size according to actual use requirements, has the characteristics of large capacity and capacity of being beneficial to PACK grouping, is particularly suitable for occasions such as automobiles and energy storage, can greatly improve the space utilization rate of the energy storage occasion, further effectively improves the production efficiency of the energy storage power station, and can effectively save the space cost and the production cost. The utility model has the advantages of simple structure, reliable performance and simple processing technology, ensures the performance of the product, can greatly reduce the production cost and better meets the requirement of actual use.
In the utility model, the positive electrode sealing ring and the negative electrode sealing ring are elastic sealing rings and can be prepared from fluororubber and/or ethylene propylene diene monomer rubber.
The plastic under the positive electrode and the plastic under the negative electrode can be obtained through injection molding, and the device has higher precision, simple structure and reliability. The welding of the present utility model may be one or a combination of welding modes such as laser welding, resistance welding, friction welding, etc.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The square battery structure is characterized by being suitable for a shell battery and comprising a positive electrode cover plate, a negative electrode cover plate and a shell, wherein the positive electrode cover plate is arranged on the end face of one end of the shell, and the negative electrode cover plate is arranged on the end face of the other end of the shell;
the positive electrode cover plate comprises positive electrode upper plastic, a positive electrode column, a positive electrode sealing ring, a positive electrode top cover plate, positive electrode lower plastic, a first positive electrode connecting sheet and a second positive electrode connecting sheet; the positive pole top cover plate is provided with a positive pole column hole, a positive pole column sleeve is circumferentially arranged on the periphery of the positive pole column hole, and a first step is arranged between the positive pole column hole and the positive pole column sleeve;
the positive electrode sealing ring is arranged on the first step, the positive electrode column is arranged on the positive electrode sealing ring, and a first gap is arranged between the positive electrode column and the positive electrode column sleeve; the positive pole plastic is sleeved on the positive pole post sleeve, and the positive pole plastic is abutted against the positive pole post; the plastic under the positive pole butt in the bottom surface of positive pole top cover piece, first positive connection piece pass the plastic under the positive pole with the positive pole post is connected, the second positive connection piece with first positive connection piece is connected.
2. The prismatic battery structure according to claim 1, wherein the plastic on the positive electrode is adapted to the first gap, and the plastic on the positive electrode is respectively abutted to the side surface of the positive electrode post and the bottom end of the positive electrode post.
3. The prismatic battery structure according to claim 2, wherein the positive electrode post sleeve and the positive electrode top cover sheet are integrally formed, and a plurality of first side holes are circumferentially arranged on the positive electrode post sleeve; and the plastic on the positive electrode is sleeved on the positive electrode post sleeve through injection molding.
4. The prismatic battery structure according to claim 1, wherein the first positive electrode connecting piece is provided with a first convex hull on a side surface close to the positive electrode post, and the first positive electrode connecting piece is connected with the positive electrode post through the first convex hull.
5. The prismatic battery structure according to claim 1, wherein the thickness of said first positive connection tab is greater than the thickness of said second positive connection tab; the first positive electrode connecting sheet is a single-layer aluminum alloy connecting sheet; the second positive electrode connecting sheet is a connecting sheet obtained by folding a plurality of layers of aluminum foils;
the positive top cover sheet is abutted against the end face of the shell; and the plastic under the positive electrode is abutted against the battery core of the shell battery.
6. The prismatic battery structure of claim 1 wherein said negative cover plate comprises a negative upper plastic, a negative post, a negative seal ring, a negative top cover plate, a negative lower plastic, a first negative connecting piece and a second negative connecting piece; the negative pole top cover plate is provided with a negative pole column hole, the periphery of the negative pole column hole is circumferentially provided with a negative pole column sleeve, and a second step is arranged between the negative pole column hole and the negative pole column sleeve;
the negative electrode sealing ring is arranged on the second step, the negative electrode column is arranged on the negative electrode sealing ring, and a second gap is arranged between the negative electrode column and the negative electrode column sleeve; the negative electrode upper plastic is sleeved on the negative electrode post sleeve, and the negative electrode upper plastic is abutted against the negative electrode post; the negative pole lower plastic rubber butt in the bottom surface of negative pole top cover piece, first negative pole connection piece pass the negative pole lower plastic rubber with the negative pole post is connected, the second negative pole connection piece with first negative pole connection piece is connected.
7. The prismatic battery structure according to claim 6, wherein the plastic on the negative electrode is adapted to the second gap, and the plastic on the negative electrode is respectively abutted to the side surface of the negative electrode post and the bottom end of the negative electrode post.
8. The prismatic battery structure according to claim 7, wherein said negative cap sleeve is integrally formed with said negative cap tab, and said negative cap sleeve is circumferentially provided with a plurality of second side holes; and the plastic on the negative electrode is sleeved on the negative electrode post sleeve through injection molding.
9. The prismatic battery structure according to claim 8, wherein a second protrusion is provided on a side of said first negative electrode connection piece adjacent to said negative electrode post, said first negative electrode connection piece being connected to said negative electrode post by said second protrusion;
the thickness of the first negative electrode connecting sheet is larger than that of the second negative electrode connecting sheet; the first negative electrode connecting sheet is a single-layer oxygen-free copper stamping forming connecting sheet; the second negative electrode connecting sheet is a connecting sheet obtained by folding a plurality of layers of copper foils;
the negative top cover piece is abutted with the end face of the shell; and the plastic under the negative electrode is abutted against the battery core of the shell battery.
10. The prismatic battery structure according to claim 1, wherein said housing battery is a lithium battery or a sodium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321150897.7U CN219677514U (en) | 2023-05-12 | 2023-05-12 | Square battery structure |
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| CN202321150897.7U CN219677514U (en) | 2023-05-12 | 2023-05-12 | Square battery structure |
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