CN212113769U - Power battery's electric core apron, electric core, module and battery package - Google Patents
Power battery's electric core apron, electric core, module and battery package Download PDFInfo
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- CN212113769U CN212113769U CN202021259537.7U CN202021259537U CN212113769U CN 212113769 U CN212113769 U CN 212113769U CN 202021259537 U CN202021259537 U CN 202021259537U CN 212113769 U CN212113769 U CN 212113769U
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Abstract
The utility model belongs to the power battery field discloses a power battery's electric core apron, electric core, module and battery package, the electric core apron includes aluminium sheet and utmost point cylinder, the cover is equipped with sealing washer and insulating plastic circle down in proper order on the utmost point cylinder, passes still the cover is equipped with insulating plastic circle behind aluminium sheet's the utmost point post hole, it is equipped with the steel ring on the insulating plastic circle to go up, the steel ring rivet in the perisporium of utmost point cylinder to make from last seamless coincide to compressing tightly between each part down. The utility model discloses an improve the assembly structure of utmost point post to highly lower riveting steel ring replaces riveting aluminium pig, can reduce utmost point post height by a wide margin, can save welding processes simultaneously, simplifies assembly process.
Description
Technical Field
The utility model belongs to the power battery field specifically, relates to a power battery's electric core apron, electric core, module and battery package.
Background
The core power source of the electric automobile is a power battery, so the performance of the power battery is particularly important. The battery core is used as a storage unit of a common power battery and mainly comprises a cover plate, an aluminum shell and a pole group. The structure of the cover plate is the most complex, and the cover plate mainly comprises a smooth aluminum sheet and a pole. The pole plays a role in conducting an internal circuit and an external circuit, the structure of the pole is very important to stress of the battery cell, and the height of the pole has an influence on the energy density of the battery cell.
At present, during the assembly of electric core post, need adopt riveting aluminium pig rather than carrying out riveting fixed on the one hand, set up the riveting hole that has certain degree of depth on the riveting aluminium pig, be equipped with the riveting protruding portion that has a take the altitude that corresponds with this riveting hole on the utmost point post, the riveting makes the height of this kind of utmost point post higher after the riveting assembly, just so compressed more electric core inner space, influenced the holistic energy density of electric core, on the other hand needs to weld aluminium sheet and insulating plastic ring and bottom backing ring, assembly process is more complicated, low in production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power battery's electricity core apron through the assembly structure who improves utmost point post to highly lower riveting steel ring replaces riveting aluminium pig, can reduce utmost point post height by a wide margin, can save welding processes simultaneously, simplifies assembly process.
In order to realize the above-mentioned purpose, first aspect, the utility model provides a power battery's electricity core apron, including light aluminum sheet and utmost point cylinder, the cover is equipped with sealing washer and insulating plastic circle down in proper order on the utmost point cylinder, passes still the cover is equipped with insulating plastic circle behind the utmost point post hole of light aluminum sheet, upward be equipped with the steel ring on the insulating plastic circle, the steel ring rivet in the perisporium of utmost point cylinder to make from last seamless coincide to compress tightly between each parts down.
Further, the utmost point cylinder is the coaxial superimposed integral type structure of four cylinders, is first cylinder, second cylinder, third cylinder and fourth cylinder respectively from last to down, the diameter of fourth cylinder > the diameter of third cylinder > the diameter of first cylinder > the diameter of second cylinder.
Further, the steel ring is riveted in a groove formed by the first cylinder, the second cylinder and the third cylinder.
Further, the steel ring has a Z-shaped section.
Further, the height of the pole body relative to the upper surface of the smooth aluminum sheet is less than 2 mm.
Furthermore, the lower insulating plastic ring is an insulating plastic ring formed by integrally forming the anode and the cathode.
In a second aspect, the present invention provides a power battery cell, including any one of the above technical solutions.
The third aspect, the utility model provides a power battery module, including the second aspect power battery electricity core.
In a fourth aspect, the present invention provides a power battery pack, including the third aspect, a power battery module.
Through the technical scheme, the assembling structure of the pole is improved, the riveting steel ring with lower height replaces a riveting aluminum block, the height of the pole can be greatly reduced, meanwhile, the welding process can be omitted, and the assembling process is simplified.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
Fig. 1 is an exploded view of an embodiment of a cell cover plate of a power battery of the present invention;
fig. 2 is a top view of an embodiment of a cell cover plate of the power battery of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged fragmentary view of the right end of FIG. 3;
fig. 5 is a schematic structural diagram of a positive steel ring and a negative steel ring in an embodiment of a cell cover plate of a power battery of the present invention;
fig. 6 is a cross-sectional view of the positive steel ring and the negative steel ring in an embodiment of the cell cover plate of the power battery of the present invention.
Fig. 7 is a cross-sectional view of the negative electrode column in an embodiment of the cell cover plate of the power battery of the present invention.
Description of the reference numerals
A positive steel ring 1; the positive electrode is provided with an insulating plastic ring 2; a polished aluminum sheet 3; a lower insulating plastic ring 4; a positive electrode seal ring 5; a positive electrode column 6; a negative electrode column 7; a negative electrode seal ring 8; an insulating plastic ring 9 is arranged on the negative electrode; and a negative steel ring 10.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
It should be noted that, in the following description of the technical solutions of the present invention, the terms "upper" and "lower" are used to indicate the orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only used for convenience of description and simplification of the present invention, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, "axial" refers to the axial extension direction of the pole body, and "circumferential" refers to the direction around the outer circumference.
As shown in fig. 1-3, an embodiment of the electrical core cover plate of the power battery of the present invention includes a smooth aluminum sheet 3 and a pole body, wherein the pole body is disposed in pairs, including a positive pole body 6 and a negative pole body 7, and correspondingly, other related components are also disposed in pairs, including an upper insulating plastic ring, a sealing ring and a steel ring; a sealing ring and a lower insulating plastic ring 4 are sequentially sleeved on each pole column body, specifically, a positive pole sealing ring 5 is sleeved on a positive pole column body 6, and a negative pole sealing ring 8 is sleeved on a negative pole column body 7; an upper insulating plastic ring is sleeved on the pole body after the pole body passes through a pole hole of the smooth aluminum sheet 3, specifically, an upper anode insulating plastic ring 2 is sleeved on the anode pole body 6, and an upper cathode insulating plastic ring 9 is sleeved on the cathode pole body 7; a steel ring is arranged on the upper insulating plastic ring, specifically, a positive steel ring 1 is arranged on the positive upper insulating plastic ring 2, and a negative steel ring 10 is arranged on the negative upper insulating plastic ring 9; the steel ring is riveted on the peripheral wall of the anode cylinder body so as to enable all parts from top to bottom to be overlapped and compressed seamlessly, specifically, the anode steel ring 1 is riveted on the peripheral wall of the anode cylinder body 6 so as to enable all adjacent parts from top to bottom of the anode steel ring 1, the anode upper insulating plastic ring 2, the anode cylinder body 6 and the anode sealing ring 5 to be overlapped and compressed seamlessly, and the cathode steel ring 10 is riveted on the peripheral wall of the cathode cylinder body 7 so as to enable all adjacent parts from top to bottom of the cathode steel ring 10, the cathode upper insulating plastic ring 9, the cathode cylinder body 7 and the cathode sealing ring 8 to be overlapped and compressed seamlessly. In this embodiment, on the one hand, through from last to each part layer upon layer nested and seamless coincide down, make full use of utmost point post axial ascending assembly space, the axial dimension of steel ring is less than the axial dimension of utmost point post body, and the steel ring overlaps with utmost point post body completely in the axial, do not stick out utmost point post body surface and occupy extra axial space, thereby make the height of assembly back shroud no longer than the height of utmost point post body, can control the holistic height of apron through the height of utmost point post body, thereby be used for the inside electric energy storage unit of electric core with the space of axial saving, be favorable to promoting power battery's energy density. Specifically, the steel ring replaces the previous riveting aluminum block (a part of the riveting aluminum block protrudes out of the surface of the pole column body after being riveted with the pole column body, so that the overall height of the cover plate can exceed the height of the pole column body), the structural member weight of the cover plate is reduced, and the cost of the structural member is reduced. On the other hand, the steel ring is located the top layer, and it compresses tightly other parts that stack one by one simultaneously after closely riveting with the utmost point post body to no longer need weld between the relevant part, if can omit the welding between insulating plastic circle 4 and the smooth aluminum sheet 3 down, also can omit the welding between insulating plastic circle and the smooth aluminum sheet 3, simplified the assembly process of apron greatly, improve production efficiency, be favorable to assembly quality's uniformity and reliability. In this embodiment, the lower insulating plastic ring 4 is a structure formed by integrally forming the positive electrode and the negative electrode, so that the displacement of each component in the radial direction of the pole body is conveniently controlled within an allowable range, and the assembly precision is favorably improved.
The utility model discloses in an embodiment of power battery's electric core apron, the utmost point cylinder is the coaxial superimposed integral type structure of four cylinders, is first cylinder, second cylinder, third cylinder and fourth cylinder respectively extremely down from last, fourth cylindrical diameter > third cylindrical diameter > first cylindrical diameter > second cylindrical diameter. Specifically, as shown in fig. 7, taking the negative electrode column 7 as an example, a first cylinder 71, a second cylinder 72, a third cylinder 73, and a fourth cylinder 74 are coaxially stacked in this order from top to bottom, and the diameter of the fourth cylinder 74 > the diameter of the third cylinder 73 > the diameter of the first cylinder 71 > the diameter of the second cylinder 72. The positive electrode column 6 and the negative electrode column 7 have the same structure, and are not described in detail. The pole body with the structure is favorable for being stacked, clamped and riveted with other matched parts, the axial space of the pole body can be used to the maximum extent, and the overall height of the assembled cover plate is finally reduced. Specifically, the step formed between the third cylinder 73 and the fourth cylinder 74 can be used for stacking and clamping the sealing ring and the lower insulating plastic ring 4, the first cylinder 71, the second cylinder 72 and the third cylinder 73 form a circle of groove, and the steel ring can be riveted in the groove and tightly attached to each surface of the groove to limit the pole body to move in any direction.
The utility model discloses an embodiment of power battery's electric core apron, as shown in fig. 3 and fig. 4, the utmost point cylinder is equivalent to the height h of light aluminum sheet 3 upper surface or the height h of outstanding light aluminum sheet 3 upper surface in the apron mainly depends on these three factors of thickness an of last insulating plastic circle, the thickness b of steel ring and the degree of depth c of light aluminum sheet utmost point post heavy groove, and its computational formula is: h is a + b-c, and when the thickness a of going up insulating plastic circle is 1mm, the thickness b of steel ring is 1mm, and the electrodeless post of smooth aluminum sheet 3 sink the groove, when c is 0, h is just 2 mm. When the smooth aluminum sheet 3 digs the pole sinking groove, namely c is more than 0, and the thickness a of the upper insulating plastic ring and the thickness b of the steel ring are relatively reduced according to the design requirement, h can be smaller than 2 mm. The reduced height can be used to increase the internal space of the cell and increase the energy density of the cell.
The utility model discloses an embodiment of power battery's electric core apron, as shown in fig. 5 and fig. 6, the steel ring has Z type section, wherein the last border and the cooperation of last insulating plastic ring of "Z" type structure, the lower border of "Z" type structure is riveted with the recess of utmost point cylinder, make the riveting position of utmost point cylinder and steel ring be located the downside of the upper surface of light aluminum sheet 3, even the steel ring stacks with utmost point post body in the axial completely, do not stand out utmost point post body surface and occupy extra axial space, greatly reduced utmost point post body height for light aluminum sheet upper surface. And traditional riveted structure rivets for utmost point cylinder and riveting aluminium pig, and the riveting position is located the upside of smooth aluminum sheet upper surface, and utmost point post body has certain height for smooth aluminum sheet upper surface.
On the basis of above-mentioned power battery's electric core cover plate embodiment, the utility model discloses in the embodiment of the power battery electricity core of second aspect, including the aforesaid power battery's electric core cover plate, all beneficial effects that the technical scheme of consequently having above-mentioned power battery's electric core cover plate embodiment at least brought. In a similar way, the utility model discloses the power battery module of third aspect includes the power battery electricity core of second aspect, and the power battery package of fourth aspect includes the power battery module of third aspect, also has all beneficial effects that the technical scheme of above-mentioned power battery's electric core cover plate embodiment brought at least.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The utility model provides a power battery's electric core apron, its characterized in that, includes aluminium sheet (3) and utmost point post body, the cover is equipped with sealing washer and insulating plastic ring (4) down in proper order on the utmost point post body, passes still the cover is equipped with insulating plastic ring after the utmost point post hole of aluminium sheet (3), upward be equipped with the steel ring on the insulating plastic ring, the steel ring rivet in the perisporium of utmost point post body to make from last seamless coincide to compress tightly between each part down.
2. The battery cell cover plate of a power battery according to claim 1, wherein the pole cylinder is an integrated structure in which four cylinders are coaxially stacked, and the pole cylinder is a first cylinder, a second cylinder, a third cylinder and a fourth cylinder from top to bottom, and the diameter of the fourth cylinder > the diameter of the third cylinder > the diameter of the first cylinder > the diameter of the second cylinder.
3. The cell cover plate of a power battery of claim 2, wherein the steel ring is riveted into a groove formed by the first cylinder, the second cylinder and the third cylinder.
4. The cell cover plate of a power battery of any one of claims 1-3, wherein the steel ring has a Z-shaped cross section.
5. The cell cover plate of a power battery according to any one of claims 1 to 3, wherein the height of the pole body relative to the upper surface of the aluminum flake (3) is less than 2 mm.
6. The cell cover plate of the power battery according to claim 4, wherein the height of the pole body relative to the upper surface of the aluminum flake (3) is less than 2 mm.
7. The battery core cover plate of the power battery according to any one of claims 1 to 3, wherein the lower insulating plastic ring (4) is an insulating plastic ring formed by integrally forming a positive electrode and a negative electrode.
8. A power battery cell, characterized by comprising the cell cover plate of the power battery of any one of claims 1 to 7.
9. A power battery module, characterized by comprising the power battery cell of claim 8.
10. A power battery pack, characterized by comprising the power battery module of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259537.7U CN212113769U (en) | 2020-06-30 | 2020-06-30 | Power battery's electric core apron, electric core, module and battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259537.7U CN212113769U (en) | 2020-06-30 | 2020-06-30 | Power battery's electric core apron, electric core, module and battery package |
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| CN212113769U true CN212113769U (en) | 2020-12-08 |
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| CN202021259537.7U Active CN212113769U (en) | 2020-06-30 | 2020-06-30 | Power battery's electric core apron, electric core, module and battery package |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615090A (en) * | 2020-12-16 | 2021-04-06 | 江苏阿李动力科技有限公司 | Power battery top cover and processing technology thereof |
| CN113889695A (en) * | 2021-08-31 | 2022-01-04 | 蜂巢能源科技有限公司 | Cover plate structure and assembly process thereof |
| CN113915690A (en) * | 2021-08-26 | 2022-01-11 | 芜湖华族环境技术股份有限公司 | Riveting structure and insulating mounting rack applying same |
| CN114744275A (en) * | 2022-05-06 | 2022-07-12 | 天津市捷威动力工业有限公司 | Square battery and assembling method |
| WO2023236941A1 (en) * | 2022-06-06 | 2023-12-14 | 北京车和家汽车科技有限公司 | Battery top cover, battery cell, and power battery |
-
2020
- 2020-06-30 CN CN202021259537.7U patent/CN212113769U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615090A (en) * | 2020-12-16 | 2021-04-06 | 江苏阿李动力科技有限公司 | Power battery top cover and processing technology thereof |
| CN113915690A (en) * | 2021-08-26 | 2022-01-11 | 芜湖华族环境技术股份有限公司 | Riveting structure and insulating mounting rack applying same |
| CN113889695A (en) * | 2021-08-31 | 2022-01-04 | 蜂巢能源科技有限公司 | Cover plate structure and assembly process thereof |
| CN114744275A (en) * | 2022-05-06 | 2022-07-12 | 天津市捷威动力工业有限公司 | Square battery and assembling method |
| WO2023236941A1 (en) * | 2022-06-06 | 2023-12-14 | 北京车和家汽车科技有限公司 | Battery top cover, battery cell, and power battery |
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