CN217239594U - Square core battery and square core battery module - Google Patents
Square core battery and square core battery module Download PDFInfo
- Publication number
- CN217239594U CN217239594U CN202220274268.4U CN202220274268U CN217239594U CN 217239594 U CN217239594 U CN 217239594U CN 202220274268 U CN202220274268 U CN 202220274268U CN 217239594 U CN217239594 U CN 217239594U
- Authority
- CN
- China
- Prior art keywords
- sheet
- battery
- square
- overlapping
- core
- Prior art date
- 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.)
- Active
Links
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a square core battery and a square core battery module, relating to the technical field of new energy, wherein the square core battery comprises a battery shell, a battery cell group and a top cover; the insulating sheet comprises a first bottom sheet and a second bottom sheet, wherein a first soaking hole is formed in the first bottom sheet, and a second soaking hole is formed in the second bottom sheet; the first bottom plate and the second bottom plate are superposed at one end of the cell group far away from the top cover, and the first soaking holes and the second soaking holes are staggered. The utility model provides a first bottom plate and a second bottom plate of an insulating sheet of a square core battery are arranged in a superposition way, so that a first infiltration hole on the first bottom plate corresponds to the part of the second bottom plate without a second infiltration hole, and a second infiltration hole on a second bottom plate corresponds to the part of the first bottom plate without the first infiltration hole; therefore, on the premise that the insulating sheet does not influence the infiltration of electrolyte on the battery core, the insulating sheet can thoroughly realize the physical isolation of the battery core and the battery shell, and further achieve the purpose of insulation.
Description
Technical Field
The utility model belongs to the technical field of the technique of the new forms of energy and specifically relates to a square core battery and square core battery module are related to.
Background
The square battery cell consists of a top cover, a naked battery cell, an insulating sheet and an aluminum shell. In order to prevent the contact between the bare cell and the aluminum shell in the square cell from generating short circuit, the bare cell and the aluminum shell need to be physically isolated to achieve the purpose of insulation.
Directly wrap up the insulating piece with naked electric core, and then make naked electric core and aluminum hull carry out the physics and keep apart, nevertheless in order not to influence the naked electric core of electrolyte infiltration, be provided with the infiltration hole on the insulating piece, just so can't realize the thorough isolation of aluminum hull and naked electric core, have the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a square core battery and square core battery module to be provided with infiltration hole on alleviating the insulating sheet, can't make electric core and aluminum hull thoroughly keep apart, have the technical problem of potential safety hazard.
In a first aspect, the present invention provides a square core battery, which comprises a battery shell, a battery cell group and a top cover; the battery shell is provided with an upper opening, the electric core group is assembled into the battery shell from the upper opening, and the top cover is assembled at the upper opening;
the cell group is wrapped with an insulating sheet, the insulating sheet comprises a first bottom sheet and a second bottom sheet, the first bottom sheet is provided with a first infiltration hole, and the second bottom sheet is provided with a second infiltration hole; the first bottom plate and the second bottom plate are superposed at one end of the cell group far away from the top cover, and the first soaking holes and the second soaking holes are staggered.
In an alternative embodiment, the insulating sheet further includes a first side sheet, a second side sheet, a first connecting sheet, a first superimposed sheet, and a second superimposed sheet;
the two ends of the first connecting piece are respectively connected with a first side piece and a second side piece, the first bottom piece is connected with the lower end of the first side piece, and the second bottom piece is connected with the lower end of the second side piece;
the first superposed piece is connected with one end of the first side piece, which is far away from the first connecting piece, and the second superposed piece is connected with one end of the second side piece, which is far away from the first connecting piece;
the first overlapping piece and the second overlapping piece can be overlapped on the same side face of the electric core group.
In an alternative embodiment, the width of the overlapping area formed by overlapping the first overlapping sheet and the second overlapping sheet at one end of the electric core group is smaller than that of the end of the electric core group.
In an alternative embodiment, the width of the overlapping area formed by overlapping the first bottom plate and the second bottom plate at one end of the electric core group is smaller than that of the end of the electric core group.
In an alternative embodiment, the top cover is provided with a liquid injection hole.
In an alternative embodiment, the battery pack includes two battery cells.
In an optional embodiment, the insulating sheet is made of PP or PET.
The utility model provides a first film and a second film of an insulation sheet of a square core battery are overlapped, so that a first infiltration hole on the first film corresponds to the part of the second film without a second infiltration hole, and a second infiltration hole on the second bottom plate corresponds to the part of the first film without the first infiltration hole; therefore, on the premise that the insulating sheet does not influence the soaking of electrolyte on the battery core, the insulating sheet can thoroughly realize the physical isolation of the battery core and the battery shell, and the purpose of insulation is further achieved.
In a second aspect, the present invention provides a square-core battery module including a plurality of square-core batteries according to any one of the above embodiments.
The utility model also provides a square core battery module, this square core battery module adopt foretell square core battery to have all beneficial effect of square core battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded view of a square-core battery according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an unfolded structure of an insulation sheet of the square core battery shown in fig. 1;
fig. 3 is a schematic structural view illustrating an insulation sheet wrapping an electric core pack of the square core battery shown in fig. 1;
fig. 4 is a schematic structural view illustrating the first connecting plate of the electric core pack wrapped by the insulating sheet of the square-core battery shown in fig. 1 is connected to the electric core pack.
Icon: 100-a top cover; 200-an electric core group; 300-an insulating sheet; 301-a first connection tab; 302-a first side panel; 303-a second side panel; 304-a first overlay sheet; 305-a second superimposed sheet; 306-a first backsheet; 307-a second backsheet; 400-a battery case; 500-upper opening; 600-a first infiltration aperture; 700-second infiltration hole.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
Examples
Referring to fig. 1 to 4, the present invention provides a square core battery, which includes a battery case 400, a battery cell pack 200, and a top cap 100; the battery case 400 has an upper opening 500, the electric core pack 200 is fitted into the battery case 400 from the upper opening 500, and the top cap 100 is fitted at the upper opening 500;
the electric core set 200 is wrapped with an insulation sheet 300, the insulation sheet 300 comprises a first bottom sheet 306 and a second bottom sheet 307, the first bottom sheet 306 is provided with a first soaking hole 600, and the second bottom sheet 307 is provided with a second soaking hole 700; the first bottom plate 306 and the second bottom plate 307 are overlapped at one end of the electric core pack 200 far away from the top cover 100, and the first infiltration holes 600 are staggered with the second infiltration holes 700.
In some embodiments, the battery case 400 of the square core battery has a battery pack 200 therein, an insulating sheet 300 is wrapped outside the battery pack 200, a first bottom sheet 306 and a second bottom sheet 307 of the insulating sheet 300 are positioned at the lower end of the battery pack 200, i.e. the end of the battery pack 200 far away from the upper opening 500, and the first bottom sheet 306 and the second bottom sheet 307 are alternately fixed on the battery pack 200; the first backsheet 306 and the second backsheet 307 have overlapping portions, thereby forming an overlapping region; the first infiltration holes 600 on the first bottom plate 306 are staggered with the second infiltration holes 700 on the second bottom plate 307, and both the first infiltration holes 600 and the second infiltration holes 700 are located in the overlapping area, i.e., the first infiltration holes 600 correspond to the portion of the second bottom plate 307 without the second infiltration holes 700, and the second infiltration holes 700 correspond to the portion of the first bottom plate 306 without the first infiltration holes 600.
This achieves physical isolation of the battery cell pack 200 from the battery case 400, but does not affect electrolyte infiltration.
After the electric core group 200 wraps the insulating sheet 300, the electric core group 200 has good insulating property, so that the electric core group 200 is insulated and isolated from the battery shell 400, the battery shell 400 is generally an aluminum shell, and when the electric core group 200 is loaded into the battery shell 400, the insulating sheet 300 can protect the electric core group 200 and prevent the electric core group 200 from being scratched by the battery shell 400 to cause electric core short circuit.
The first wetting hole 600 of the first bottom plate 306 and the second wetting hole 700 of the second bottom plate 307 can realize physical isolation without affecting the wetting of the electrolyte into the electric core group 200.
Referring to fig. 2, 3 and 4, in an alternative embodiment, the insulation sheet 300 further includes a first side sheet 302, a second side sheet 303, a first connection sheet 301, a first superimposed sheet 304 and a second superimposed sheet 305;
the two ends of the first connecting piece 301 are respectively connected with a first side piece 302 and the second side piece 303, the first bottom piece 306 is connected with the lower end of the first side piece 302, and the second bottom piece 307 is connected with the lower end of the second side piece 303;
the first superimposed sheet 304 is connected with one end of the first side sheet 302 far away from the first connecting sheet 301, and the second superimposed sheet 305 is connected with one end of the second side sheet 303 far away from the first connecting sheet 301;
the first overlapping sheet 304 and the second overlapping sheet 305 can be overlapped on the same side of the electric core group 200.
When the insulation sheet 300 comprises the electric core assembly 200, the first connection sheet 301 is positioned and assembled on the side surface of the electric core assembly 200, so that the wrapping insulation of one side surface of the electric core assembly 200 is realized, and then the first side sheet 302 and the second side sheet 303 are sequentially bent, so that the first side sheet 302 and the second side sheet 303 wrap the corresponding two side surfaces of the electric core assembly 200; the first overlapped sheet 304 and the second overlapped sheet 305 are bent to enable the first overlapped sheet 304 and the second overlapped sheet 305 to be respectively assembled on the electric core group 200, and the single first overlapped sheet 304 or the single second overlapped sheet 305 can not completely cover the corresponding side of the electric core group 200. The first overlapping sheet 304 and the second overlapping sheet 305 can cover the corresponding side surfaces of the electric core group 200 after being matched.
Bending the first bottom sheet 306 and the second bottom sheet 307, so that the first bottom sheet 306 and the second bottom sheet 307 wrap the lower end of the electric core assembly 200; the joint between the first bottom plate and the first side piece 302, the joint between the second bottom plate and the second side piece 303, the joint between the first connecting piece 301 and the first side piece 302, the joint between the first connecting piece 301 and the second side piece 303, the joint between the first overlapping piece 304 and the first side piece 302, and the joint between the second overlapping piece 305 and the second side piece 303 are all provided with creases.
Referring to fig. 3, in an alternative embodiment, the width of the overlapping area formed by overlapping the first overlapping sheet 304 and the second overlapping sheet 305 at one end of the electric core pack 200 is smaller than that of the end of the electric core pack 200.
In an alternative embodiment, the width of the overlapped area formed by overlapping the first bottom plate 306 and the second bottom plate 307 at one end of the electric core set 200 is smaller than that of the end of the electric core set 200.
The width of the overlapping area of the first bottom sheet 306 and the second bottom sheet 307 is larger, the first infiltration holes 600 and the second infiltration holes 700 are both positioned in the overlapping area, and the overlapping area with enough width enables the first bottom sheet 306 and the second bottom sheet 307 to be provided with enough first infiltration holes 600 and enough second infiltration holes 700 respectively.
The width of the overlapping area formed by overlapping the first overlapping sheet 304 and the second overlapping sheet 305 is small as long as the first overlapping sheet 304 and the second overlapping sheet 305 can firmly wrap the corresponding side surface of the electric core group 200.
In an alternative embodiment, the top cover 100 is provided with a liquid injection hole.
In an alternative embodiment, the battery pack 200 includes two battery cells.
In an alternative embodiment, the insulating sheet 300 is made of PP or PET.
Referring to fig. 3 and 4, the insulating sheet 300 may be made of a material conventionally used, such as PP or PET, and the electrolyte enters the battery case 400 through the electrolyte injection hole of the top cover 100; the battery cell pack 200 generally includes two battery cells, which are assembled into the battery case 400 after being coupled to the top cap 100.
Two electric cores of the electric core group 200 are naked electric cores, after the electrolyte enters the battery shell 400, the electrolyte can enter from the first infiltration hole 600 of the first bottom sheet 306 and the second infiltration hole 700 of the second bottom sheet 307 at the lower end of the electric core group 200, and then the infiltration of the electric cores is completed, and the first infiltration hole 600 and the second infiltration hole 700 are completely staggered, so that the electric core group 200 and the battery shell 400 are completely isolated.
The utility model provides a first film 306 and a second film 307 of an insulation sheet 300 of a square core battery are overlapped, and then a first infiltration hole 600 on the first film 306 corresponds to the part of the second film 307 without a second infiltration hole 700, and a second infiltration hole 700 on the second bottom plate corresponds to the part of the first film 306 without the first infiltration hole 600; thus, on the premise that the insulating sheet 300 does not affect the infiltration of the electrolyte into the battery cell, the insulating sheet 300 can thoroughly realize the physical isolation between the battery cell and the battery shell 400, and further achieve the purpose of insulation.
In a second aspect, the present invention provides a square-core battery module including a plurality of square-core batteries according to any one of the above embodiments.
The utility model also provides a square core battery module, this square core battery module adopt foretell square core battery to have all beneficial effects of square core battery.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (8)
1. A square core battery is characterized by comprising a battery shell (400), a battery core group (200) and a top cover (100); the battery case (400) has an upper opening (500), the battery pack (200) is fitted into the battery case (400) from the upper opening (500), and the top cap (100) is fitted at the upper opening (500);
the electric core group (200) is wrapped with an insulating sheet (300), the insulating sheet (300) comprises a first bottom sheet (306) and a second bottom sheet (307), the first bottom sheet (306) is provided with a first soaking hole (600), and the second bottom sheet (307) is provided with a second soaking hole (700); the first bottom plate (306) and the second bottom plate (307) are overlapped at one end of the electric core group (200) far away from the top cover (100), and the first infiltration holes (600) and the second infiltration holes (700) are staggered.
2. The square core battery according to claim 1, wherein the insulation sheet (300) further comprises a first side sheet (302), a second side sheet (303), a first connection sheet (301), a first superimposed sheet (304), and a second superimposed sheet (305);
the two ends of the first connecting piece (301) are respectively connected with a first side piece (302) and the second side piece (303), the first bottom piece (306) is connected with the lower end of the first side piece (302), and the second bottom piece (307) is connected with the lower end of the second side piece (303);
the first superimposed sheet (304) is connected with one end of the first side sheet (302) far away from the first connecting sheet (301), and the second superimposed sheet (305) is connected with one end of the second side sheet (303) far away from the first connecting sheet (301);
the first overlapping sheet (304) and the second overlapping sheet (305) can be overlapped on the same side face of the electric core group (200).
3. The square core battery according to claim 2, wherein the width of the overlapping area formed by overlapping the first overlapping piece (304) and the second overlapping piece (305) at one end of the electric core assembly (200) is smaller than that of the electric core assembly (200).
4. The square core battery according to claim 3, wherein the width of the overlapping area formed by overlapping the first bottom sheet (306) and the second bottom sheet (307) at one end of the electric core group (200) is smaller than that of the end of the electric core group (200).
5. The square-core battery according to claim 1, wherein the top cover (100) is provided with a liquid injection hole.
6. The square-core battery according to claim 1, wherein the battery cell group (200) comprises two battery cells.
7. The square core battery according to claim 1, wherein the insulating sheet (300) is made of PP or PET.
8. A square-cell battery module comprising a plurality of square-cell batteries according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220274268.4U CN217239594U (en) | 2022-02-10 | 2022-02-10 | Square core battery and square core battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220274268.4U CN217239594U (en) | 2022-02-10 | 2022-02-10 | Square core battery and square core battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217239594U true CN217239594U (en) | 2022-08-19 |
Family
ID=82833459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220274268.4U Active CN217239594U (en) | 2022-02-10 | 2022-02-10 | Square core battery and square core battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217239594U (en) |
-
2022
- 2022-02-10 CN CN202220274268.4U patent/CN217239594U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101271985B (en) | Rechargeable battery and its fabrication method | |
| JP4249117B2 (en) | Pouch-type lithium secondary battery | |
| TWI474542B (en) | Secondary battery pack, manufacturing method thereof and protection circuit module | |
| US9083028B2 (en) | Secondary battery pack of novel structure | |
| KR100571268B1 (en) | Current collector and lithium ion secondary battery using same | |
| KR100839785B1 (en) | Rechargeable battery and Method of making the same | |
| US20060019156A1 (en) | Pouch-type lithium secondary battery | |
| CN111509150B (en) | Lithium ion battery's electric core structure | |
| US7927735B2 (en) | Secondary battery | |
| EP3509124B1 (en) | Insulation plate for secondary battery, secondary battery, and vehicle | |
| CN211017177U (en) | Battery module | |
| CN213905519U (en) | Square battery | |
| CN217239594U (en) | Square core battery and square core battery module | |
| KR20110059096A (en) | Secondary battery and method for packing the same | |
| KR100731436B1 (en) | Pouch type Lithium Secondary Battery | |
| CN214957079U (en) | Battery with a battery cell | |
| CN217009488U (en) | Laminate polymer battery group and electronic equipment | |
| CN201789007U (en) | Cover plate assembly and lithium-ion battery with cover plate assembly | |
| CN211404627U (en) | Battery tab and battery | |
| JP2023526825A (en) | Secondary battery module, secondary battery pack including the same, and automobile | |
| KR100614397B1 (en) | Secondary battery | |
| CN217134506U (en) | Battery cover plate assembly and power battery | |
| CN218334226U (en) | Single battery and battery pack | |
| CN218351667U (en) | High-energy density battery | |
| CN216311908U (en) | Battery and battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |