CN211907596U - Laminate polymer battery and battery module - Google Patents
Laminate polymer battery and battery module Download PDFInfo
- Publication number
- CN211907596U CN211907596U CN202020419240.6U CN202020419240U CN211907596U CN 211907596 U CN211907596 U CN 211907596U CN 202020419240 U CN202020419240 U CN 202020419240U CN 211907596 U CN211907596 U CN 211907596U
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- China
- Prior art keywords
- battery
- battery cell
- tab
- cell
- edge
- Prior art date
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- 229920000642 polymer Polymers 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000002985 plastic film Substances 0.000 claims description 9
- 229920006255 plastic film Polymers 0.000 claims description 9
- 239000012528 membrane Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004804 winding Methods 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
-
- 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
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to a power battery technical field discloses a laminate polymer battery and battery module. The soft package battery comprises a battery cell and a tab, wherein the battery cell comprises a long edge arranged along the X direction, a wide edge arranged along the Y direction and a high edge arranged along the Z direction, and the ratio of the long edge to the wide edge of the battery cell 1 is greater than 2; the tab comprises a positive tab and a negative tab which are arranged at intervals, and the positive tab and the negative tab are arranged on the long edge of the battery cell at intervals. The utility model can effectively reduce the space occupied by the battery cell in the length direction and improve the space utilization rate when the PACK is assembled by arranging the lug on the long edge of the battery cell; meanwhile, the lug arranged on the long edge of the battery cell can also effectively improve the internal current distribution of the battery cell with the ratio of the long edge to the wide edge larger than 2, and reduce the internal resistance of the battery cell.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a laminate polymer battery and battery module.
Background
At present, the long battery cell of the soft-packaged power battery is provided with lugs on two sides in the length direction, the lugs are positioned on two sides during PACK assembly and occupy a large space, the internal resistance of the battery cell can be increased when the length of the battery cell is longer, and the current distribution is uneven.
SUMMERY OF THE UTILITY MODEL
Based on above, an object of the utility model is to provide a laminate polymer battery and battery module, length direction size is little, is favorable to improving electric core inside current distribution, reduces electric core internal resistance.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a pouch battery comprising:
the battery cell comprises a long edge arranged along the X direction, a wide edge arranged along the Y direction and a high edge arranged along the Z direction, and the ratio of the long edge to the wide edge of the battery cell is more than 2;
the tab comprises a positive tab and a negative tab which are arranged at intervals, and the positive tab and the negative tab are arranged at intervals on the long edge of the battery cell.
As a preferable scheme of the soft package battery, the positive tab and the negative tab are located on the same side of the battery core.
As a preferred scheme of the soft package battery, the positive electrode tab and the negative electrode tab are located in the middle of the long edge of the battery core.
As a preferable scheme of the soft package battery, the number of pairs of the tabs is less than or equal to 5 pairs.
As a preferred scheme of the soft package battery, the lugs are provided with two pairs, and the two pairs of lugs are arranged on the surface of the battery cell parallel to the XY plane at intervals.
As a preferable scheme of the soft package battery, the interval between two adjacent pairs of the tabs is more than 50 mm.
As a preferable scheme of the soft package battery, the distance between the tab and the edge of the battery core is greater than 5 mm.
As a preferred scheme of the soft package battery, the soft package battery further comprises a steel-plastic film, the battery cell is packaged in the steel-plastic film, and the tab of the battery cell penetrates through the steel-plastic film and extends to the outside of the steel-plastic film.
A battery module comprises a plurality of laminate polymer batteries according to any one of the above aspects.
As a preferred scheme of battery module, it is a plurality of laminate polymer battery the utmost point ear set up in battery module is with one side.
The utility model has the advantages that: the battery cell with the ratio of the long edge to the wide edge larger than 2 is longer, so that the length direction of the soft package battery can occupy larger space due to the arrangement of the tabs in the length direction, and the space utilization rate during PACK assembly can be effectively improved by arranging the tabs on the long edge of the battery cell; meanwhile, the longer length of the battery cell can increase the internal resistance, the current distribution is uneven, the internal current distribution of the battery cell with the ratio of the long edge to the wide edge larger than 2 can be effectively improved by arranging the lug on the long edge of the battery cell, and the internal resistance of the battery cell is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic view of a pouch battery according to an embodiment of the present invention;
fig. 2 is a schematic view of another pouch battery according to an embodiment of the present invention;
fig. 3 is a schematic view of another pouch battery according to an embodiment of the present invention;
fig. 4 is a schematic view of a positive plate according to an embodiment of the present invention;
fig. 5 is a schematic view of a negative electrode sheet according to an embodiment of the present invention.
In the figure:
1-electric core; 11-positive plate; 12-negative pole piece;
2-pole ear; 21-positive tab; 22-negative tab;
3-steel plastic film.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 5, the present embodiment provides a soft package battery for a battery module, the soft package battery includes a battery cell 1 and a tab 2, the battery cell 1 includes a long side arranged along an X direction, a wide side arranged along a Y direction, and a high side arranged along a Z direction, and a ratio of the long side to the wide side of the battery cell 1 is greater than 2; the tab 2 comprises a positive tab 21 and a negative tab 22 which are arranged at intervals, and the positive tab 21 and the negative tab 22 are arranged at intervals on the long side of the battery cell 1.
The battery cell 1 with the ratio of the long edge to the wide edge larger than 2 is longer, so that the length direction of the soft package battery can occupy larger space due to the arrangement of the tab 2 in the length direction, and the space utilization rate during PACK assembly can be effectively improved by arranging the tab 2 on the long edge of the battery cell 1; meanwhile, the longer length of the battery cell 1 can increase the internal resistance, the current distribution is uneven, the internal current distribution of the battery cell 1 with the ratio of the long edge to the wide edge larger than 2 can be effectively improved by arranging the lug 2 on the long edge of the battery cell 1, and the internal resistance of the battery cell 1 is reduced.
In this embodiment, the battery cell 1 may be a laminated battery cell or a winding battery cell, and the laminated battery cell is taken as an example for description below.
The laminated battery cell comprises a positive plate 11, a negative plate 12 and a diaphragm positioned between the positive plate 11 and the negative plate 12 which are sequentially stacked, and the ratio of the long edge to the wide edge is more than 2; the tab 2 comprises a positive tab 21 and a negative tab 22 arranged at intervals, the positive tab 21 is electrically connected with the positive plate 11, and the negative tab 22 is electrically connected with the negative plate 12. Because the broadside of electric core 1 is narrower, positive tab 21 and negative tab 22 set up along the length direction of electric core 1, and utmost point ear 2 is greater than 5mm apart from the edge of electric core 1, the equipment of being convenient for.
In addition, the current collectors of the positive electrode plate 11 and the negative electrode plate 12 are made into a high-strength ceramic or polymer material intermediate layer by using the high-strength ceramic or polymer material as a base material, and metal conductive layers are arranged on both the upper surface and the lower surface of the high-strength ceramic or polymer material intermediate layer. The high-strength ceramic or high polymer material intermediate layer is of a porous structure, so that the specific gravity of the metal conducting layer is improved while the strength is ensured, and the flow conductivity of the current collector is ensured; the metal conductive layer may be aluminum, copper, nickel, titanium, iron or alloys of these metals in various proportions. The current collector has higher hardness, lighter weight and higher specific energy of the battery.
Preferably, the tabs 2 are located on the same side of the battery cell 1. Further preferably, the battery cell is arranged on the long side of the battery cell 1, that is, on the surface of the battery cell 1 parallel to the XY plane, and is arranged in the middle, so that the space utilization rate in the length direction can be increased, and the battery cell is more suitable for the application of the occasions with less height limitation and stricter width limitation.
In this embodiment, the two pairs of tabs 2 are disposed, and the two pairs of tabs 2 are disposed on the surface of the battery cell 1 parallel to the X direction at intervals. Two pairs of tabs 2 are arranged along the length direction of the battery core 1. The interval between two adjacent pairs of the lugs 2 is more than 50 mm. Further, two pairs of tabs 2 are arranged on the surface of the battery cell 1 parallel to the XY plane at intervals. In other embodiments, as shown in fig. 2 and 3, one skilled in the art may arrange the tabs 2 into three, four or five pairs according to actual needs. It is worth noting that the number of pairs of tabs 2 is generally not more than 5 pairs.
For guaranteeing laminate polymer battery's intensity, laminate polymer battery still includes steel and moulds membrane 3, and electric core 1 encapsulates in steel moulds membrane 3, and electric core 1's utmost point ear 2 passes steel and moulds membrane 3 and extend to the outside that steel moulded membrane 3, and steel is moulded membrane 3 and is higher than traditional aluminium membrane intensity.
The embodiment also discloses a battery module, which comprises a plurality of the soft package batteries in any scheme. Further, a plurality of laminate polymer battery's utmost point ear 2 sets up in same one side of battery module. The length direction of the battery module occupies a small space, and the whole battery module has high space utilization rate.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. A pouch cell, comprising:
the battery cell comprises a battery cell (1) and a battery cell, wherein the battery cell comprises a long edge arranged along the X direction, a wide edge arranged along the Y direction and a high edge arranged along the Z direction, and the ratio of the long edge to the wide edge of the battery cell (1) is greater than 2;
utmost point ear (2), utmost point ear (2) are including anodal ear (21) and negative pole ear (22) that the interval set up, anodal ear (21) with negative pole ear (22) interval sets up on the long limit of electric core (1).
2. The laminate battery according to claim 1, wherein the positive tab (21) and the negative tab (22) are located on the same side of the cell (1).
3. The laminate battery according to claim 2, wherein the positive electrode tab (21) and the negative electrode tab (22) are located in the middle of the long side of the battery cell (1).
4. The pouch cell according to claim 1, characterized in that the number of pairs of the tabs (2) is 5 pairs or less.
5. The laminate battery according to claim 4, characterized in that the tabs (2) are arranged in two pairs, and the two pairs of tabs (2) are arranged on the surface of the battery cell (1) parallel to the XY plane at intervals.
6. The pouch cell according to claim 4, characterized in that the spacing between two adjacent pairs of the tabs (2) is greater than 50 mm.
7. The pouch battery according to claim 1, characterized in that the tab (2) is more than 5mm from the edge of the cell (1).
8. The laminate battery according to any one of claims 1 to 7, further comprising a steel plastic film (3), wherein the battery core (1) is encapsulated in the steel plastic film (3), and the tab (2) of the battery core (1) extends to the outside of the steel plastic film (3) through the steel plastic film (3).
9. A battery module comprising a plurality of the pouch cells according to any one of claims 1 to 8.
10. The battery module according to claim 9, wherein the tabs (2) of the plurality of pouch batteries are disposed on the same side of the battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020419240.6U CN211907596U (en) | 2020-03-27 | 2020-03-27 | Laminate polymer battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020419240.6U CN211907596U (en) | 2020-03-27 | 2020-03-27 | Laminate polymer battery and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211907596U true CN211907596U (en) | 2020-11-10 |
Family
ID=73274203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020419240.6U Active CN211907596U (en) | 2020-03-27 | 2020-03-27 | Laminate polymer battery and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211907596U (en) |
-
2020
- 2020-03-27 CN CN202020419240.6U patent/CN211907596U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |