CN218632232U - Battery case, battery and battery pack - Google Patents
Battery case, battery and battery pack Download PDFInfo
- Publication number
- CN218632232U CN218632232U CN202221670796.8U CN202221670796U CN218632232U CN 218632232 U CN218632232 U CN 218632232U CN 202221670796 U CN202221670796 U CN 202221670796U CN 218632232 U CN218632232 U CN 218632232U
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- CN
- China
- Prior art keywords
- cover plate
- battery
- upper cover
- lower cover
- sheet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000004804 winding Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery shell, a battery and a battery pack, which belong to the field of batteries, wherein the battery shell comprises an upper cover plate, a lower cover plate and a cylinder body, the upper cover plate, the lower cover plate and the cylinder body are enclosed to form a shell, and the upper cover plate and the lower cover plate are a positive pole column and a negative pole column of the battery; the upper cover plate is provided with a groove and/or a bulge, and the lower cover plate is provided with a bulge and/or a groove which are matched with the groove and/or the bulge; when the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate and the lower cover plate are in concave-convex fit, so that the two batteries are reliably electrically connected. The utility model provides high area of contact between the post when the battery electricity is connected has strengthened the effect that overflows, simple structure, and simple to operate has improved assembly efficiency.
Description
Technical Field
The utility model belongs to the battery field, concretely relates to battery case, battery and group battery.
Background
The high-capacity lithium battery is one of the development directions of the lithium battery, and can be applied to the fields of energy storage and power batteries. The utmost point post of battery is the important component part of battery, when two batteries are established ties, positive negative pole post mainly plays the effect of electric conduction, positive pole post and negative pole post are connected relatively, carry out the electric conduction through connecting the face, nevertheless go up the battery that the apron is positive negative pole post down, positive pole apron and negative pole apron area are great, if only rely on in the battery case outside connected mode, the reliability is lower, the problem that utmost point post contact surface can not fully contact appears easily, consequently, the stability that the utmost point post is connected can't be guaranteed, and positive negative pole post also can't guarantee to contact completely, thereby lead to the overcurrent performance between the utmost point post relatively poor.
In view of this, it is necessary to further improve the current conducting performance between the positive and negative terminals of the battery, so as to improve the current conducting performance between the contact surfaces of the terminals.
CN113851698A discloses a power lithium ion battery, comprising: the winding core assembly comprises a shell, a winding core assembly, a positive cover plate and a negative cover plate; the winding core group comprises a fixing support and a plurality of winding cores, the fixing support is provided with a plurality of placing grooves, the winding cores are placed in the placing grooves, the winding cores correspond to the placing grooves one by one, the positive pole lugs of the winding cores are connected in series, and the negative pole lugs of the winding cores are connected in series; the positive cover plate and the negative cover plate are respectively fixed on two opposite sides of the winding core group and used for coating the two opposite sides of the winding core group; the shell is arranged on the outer side of the winding core group and used for coating the winding core group. The application does not take the whole cover plate as the positive and negative electrodes of the battery, and the contact area between the pole posts cannot be increased when the batteries are connected in series, so that the contact of the contact surfaces between the pole posts is insufficient, and the electric connection is unstable.
CN210576090U discloses a battery case and battery, wherein, battery case includes anodal apron, negative pole apron and casing, and anodal apron sets up the one end at the casing, and the negative pole apron sets up the other end at the casing, and anodal apron, negative pole apron and casing form and annotate the liquid cavity, and one side that the casing is close to annotating the liquid cavity is provided with the guiding gutter, the guiding gutter with annotate the liquid cavity intercommunication. However, the application does not use the whole cover plate as the positive and negative electrodes of the battery, and the contact area between the pole columns cannot be increased when the cover plate and the positive and negative electrodes are connected in series, so that the overcurrent effect of the pole columns is poor.
Disclosure of Invention
Contact surface can not fully contact, the area of overflowing is little, the unstable problem of electricity connection between the utmost point post when solving current battery series connection, the utility model provides a battery case, battery and group battery.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a battery shell, which comprises an upper cover plate, a lower cover plate and a cylinder body, wherein the upper cover plate, the lower cover plate and the cylinder body are enclosed to form the shell, and the upper cover plate and the lower cover plate are a positive pole column and a negative pole column of a battery;
the upper cover plate is provided with a groove and/or a protrusion, and the lower cover plate is provided with a protrusion and/or a groove which are matched with the groove and/or the protrusion;
when the positive pole posts and the negative pole posts of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate and the lower cover plate are in concave-convex fit, so that the two batteries are reliably electrically connected.
Preferably, a conductive assembly is further arranged between the poles connecting the two batteries.
Preferably, the conductive component is of a sheet structure and is in electrical contact with the pole;
when the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate and the lower cover plate extrude the conductive assembly, and the conductive assembly deforms, so that the two batteries are reliably electrically connected.
Preferably, the shape of the conductive component is matched with that of the pole.
Preferably, the conductive component is at least one of a silver sheet, a copper sheet, a nickel sheet, an aluminum sheet, a foamed silver sheet, a foamed copper sheet, a foamed nickel sheet, a foamed aluminum sheet, a graphite sheet and graphite cotton.
Preferably, the battery shell is circumferentially provided with a fastening device so that the battery pole column is electrically and reliably connected.
Preferably, an insulating layer is arranged between the cylinder and the upper cover plate and between the cylinder and the lower cover plate.
Preferably, the insulating layer is at least one of an injection molding layer, an insulating glue and an insulating pad.
The utility model also provides a battery, including foretell battery case.
The utility model also provides a group battery, including two at least foretell batteries.
Compared with the prior art, the utility model discloses technical scheme has following advantage:
1. the upper cover plate and the lower cover plate of the utility model are the positive pole and the negative pole of the battery, the upper cover plate is provided with a groove and/or a bulge, and the lower cover plate is provided with a bulge and/or a groove which are matched with the groove and/or the bulge; when the positive pole posts and the negative pole posts of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate and the lower cover plate are in concave-convex fit, the flow area of a post contact surface can be increased, and the stability of electrical connection between battery posts is improved.
2. When the positive post and the negative post of any two adjacent batteries are electrically connected to form a series battery pack, a conductive assembly is arranged between contact surfaces of battery posts, the conductive assembly is of a sheet structure and is matched with the post in shape, the contact area of the conductive assembly and the battery posts can be further increased, the overcurrent effect is improved, the structure is simple, the installation is convenient, and the assembly efficiency is improved.
3. When the positive post and the negative post of any two adjacent batteries are electrically connected to form a series battery pack, the upper cover plate and the lower cover plate extrude the conductive component, the conductive component deforms, the shape matching degree of the conductive component and the battery post is higher, the contact area of the conductive component and the battery post is further increased, and the overcurrent effect is improved.
4. The battery shell is provided with the fastening device along the circumferential direction, so that the pole columns electrically connected with the adjacent batteries can be pressed inwards, the flow area is increased, and the electric connection of the battery pole columns is more reliable.
5. An insulating layer is arranged between the battery barrel and the upper cover plate and between the battery barrel and the lower cover plate, so that short circuit caused by the conduction of the positive and negative electrodes of the same battery is prevented.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a battery case according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a conductive assembly of a battery case according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;
fig. 4 is an explosion diagram of the battery pack according to the embodiment of the present invention.
Reference numerals: 1-upper cover plate, 2-lower cover plate, 3-cylinder, 4-conductive component, 5-groove, 6-projection, 7-insulating layer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a battery case, which includes an upper cover plate 1, a lower cover plate 2, and a cylinder 3, where the upper cover plate 1, the lower cover plate 2, and the cylinder 3 enclose to form a case, and the upper cover plate 1 and the lower cover plate 2 are a positive pole and a negative pole of a battery. The upper cover plate 1 is provided with a groove 5, and the lower cover plate 2 is provided with a bulge 6 matched with the groove 5;
when the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate 1 and the lower cover plate 2 are in concave-convex fit, so that the two batteries are reliably electrically connected.
In this embodiment, the upper cover plate and the lower cover plate are in concave-convex fit, so that the flow area of the contact surface of the pole can be increased, the flow effect is improved, and the stability of electric connection between the battery poles is enhanced.
Example 2
As shown in fig. 1 and fig. 2, the present embodiment provides a battery case, which includes an upper cover plate 1, a lower cover plate 2, and a barrel 3, where the upper cover plate 1, the lower cover plate 2, and the barrel 3 enclose to form a case, and the upper cover plate 1 and the lower cover plate 2 are a positive pole and a negative pole of a battery. The upper cover plate 1 is provided with a bulge 6, and the lower cover plate 2 is provided with a groove 5 matched with the bulge 6.
In this embodiment, a conductive component 4 is further disposed between the poles of the two electrically connected batteries, and the conductive component 4 is a sheet structure and is electrically contacted with the battery poles. The shape of the conductive component 4 is matched with that of the pole. When the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate 1 and the lower cover plate 2 extrude the conductive component 4, the conductive component 4 deforms, the contact area of the conductive component 4 and the battery pole post is increased, the overcurrent effect is improved, and the electrical connection of the two batteries is more reliable.
In the present embodiment, the conductive member 4 is a foamed copper sheet, and it may also be at least one of a silver sheet, a copper sheet, a nickel sheet, an aluminum sheet, a foamed silver sheet, a foamed nickel sheet, a foamed aluminum sheet, a graphite sheet, and graphite wool. By above-mentioned conductive component is comparatively soft, can take place deformation under the extrusion of battery utmost point post to fully coincide with the shape of utmost point post, the electricity is connected more stably.
The conductive assembly is arranged between the positive cover plate and the negative cover plate of the battery, so that the flow area of the contact surface of the polar columns can be increased, and the stability of the electric connection between the polar columns of the battery is improved; the battery pole is provided with a groove and a bulge which are matched with each other, the conductive assembly is of a sheet structure, and the shape of the conductive assembly is matched with that of the pole, so that the contact area of the conductive assembly and the battery pole can be further increased, and the overcurrent effect is improved; the conductive assembly is relatively flexible, when the positive pole posts and the negative pole posts of any two adjacent batteries are electrically connected to form a series battery pack, the upper cover plate and the lower cover plate extrude the conductive assembly, the conductive assembly deforms, the contact area of the conductive assembly and the battery pole posts can be further increased, and the overcurrent effect is improved, so that the two batteries are electrically connected more reliably; meanwhile, the device is simple in structure and convenient to install, and the assembly efficiency is improved.
Example 3
As shown in fig. 1 and fig. 2, the present embodiment provides a battery case, which includes an upper cover plate 1, a lower cover plate 2, and a barrel 3, where the upper cover plate 1, the lower cover plate 2, and the barrel 3 enclose to form a case, and the upper cover plate 1 and the lower cover plate 2 are a positive pole and a negative pole of a battery. The upper cover plate 1 is provided with a bulge 6, and the lower cover plate 2 is provided with a groove 5 matched with the bulge 6.
In this embodiment, a conductive component 4 is further disposed between the poles of the two electrically connected batteries, and the conductive component 4 is a sheet structure and is in electrical contact with the battery poles. The shape of the conductive component 4 is matched with that of the pole. When the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a series battery pack, the upper cover plate 1 and the lower cover plate 2 extrude the conductive component 4, the conductive component 4 deforms, the contact area of the conductive component 4 and the battery pole post is increased, the overcurrent effect is improved, and the electric connection of the two batteries is more reliable.
In the present embodiment, the conductive member 4 is a foamed copper sheet, and it may also be at least one of a silver sheet, a copper sheet, a nickel sheet, an aluminum sheet, a foamed silver sheet, a foamed nickel sheet, a foamed aluminum sheet, a graphite sheet, and graphite wool. By above-mentioned conductive component comparatively soft, can take place deformation under the extrusion of battery utmost point post to fully coincide with the shape of utmost point post, the electricity is connected more stably.
In this embodiment, be provided with fastener along circumference on the battery case, can inwards compress tightly the utmost point post that adjacent battery electricity is connected, further increase the overcurrent area, make battery utmost point post electricity connect more reliably.
In this embodiment, an insulating layer 7 is disposed between the barrel and the upper and lower cover plates, so as to prevent short circuit caused by electrical conduction between the positive and negative electrodes of the same battery. In this embodiment, the insulating layer 7 is an insulating pad, which may also be at least one of an injection molding layer and an insulating glue.
Example 4
This embodiment provides a battery or a battery case including the battery case in embodiments 1, 2, and 3 described above.
Example 5
As shown in fig. 3 and 4, the present embodiment provides a battery pack including at least two batteries or battery boxes according to embodiment 4.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A battery shell is characterized by comprising an upper cover plate, a lower cover plate and a cylinder body, wherein the upper cover plate, the lower cover plate and the cylinder body are enclosed to form the shell, and the upper cover plate and the lower cover plate are used as a positive pole and a negative pole of a battery;
the upper cover plate is provided with a groove and/or a protrusion, and the lower cover plate is provided with a protrusion and/or a groove which are matched with the groove and/or the protrusion;
when the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a series-connected battery pack, the upper cover plate and the lower cover plate are in concave-convex fit, so that the two batteries are reliably electrically connected.
2. The battery case of claim 1, wherein: and a conductive component is also arranged between the poles of the two electrically connected batteries.
3. The battery case according to claim 2, wherein: the conductive component is of a sheet structure and is in electrical contact with the pole;
when the positive pole post and the negative pole post of any two adjacent batteries are electrically connected to form a battery pack connected in series, the upper cover plate and the lower cover plate extrude the conductive assembly, and the conductive assembly deforms, so that the two batteries are reliably electrically connected.
4. The battery case according to claim 2, wherein: the conductive component is matched with the pole in shape.
5. The battery case according to claim 2, wherein: the conductive component is at least one of a silver sheet, a copper sheet, a nickel sheet, an aluminum sheet, a foamed silver sheet, a foamed copper sheet, a foamed nickel sheet, a foamed aluminum sheet, a graphite sheet and graphite cotton.
6. The battery case of claim 1, wherein: and a fastening device is arranged on the battery shell along the circumferential direction, so that the battery pole column is electrically and reliably connected.
7. The battery case of claim 1, wherein: and an insulating layer is arranged between the cylinder body and the upper cover plate and between the cylinder body and the lower cover plate.
8. The battery case of claim 7, wherein: the insulating layer is at least one of an injection molding layer, insulating glue and an insulating pad.
9. A battery, characterized by: comprising a battery case according to any one of claims 1 to 8.
10. A battery pack, characterized in that: comprising at least two cells according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221670796.8U CN218632232U (en) | 2022-06-30 | 2022-06-30 | Battery case, battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221670796.8U CN218632232U (en) | 2022-06-30 | 2022-06-30 | Battery case, battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218632232U true CN218632232U (en) | 2023-03-14 |
Family
ID=85457680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221670796.8U Active CN218632232U (en) | 2022-06-30 | 2022-06-30 | Battery case, battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218632232U (en) |
-
2022
- 2022-06-30 CN CN202221670796.8U patent/CN218632232U/en active Active
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| GR01 | Patent grant |