CN220155675U - Cylindrical battery pack - Google Patents
Cylindrical battery pack Download PDFInfo
- Publication number
- CN220155675U CN220155675U CN202321675946.9U CN202321675946U CN220155675U CN 220155675 U CN220155675 U CN 220155675U CN 202321675946 U CN202321675946 U CN 202321675946U CN 220155675 U CN220155675 U CN 220155675U
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- CN
- China
- Prior art keywords
- battery pack
- cylindrical battery
- battery
- cells
- cooling
- 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.)
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- 238000001816 cooling Methods 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000012809 cooling fluid Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 239000000110 cooling liquid Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000006258 conductive agent Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The cylindrical battery pack comprises a shell, a battery module and a cooling mechanism, wherein the battery module is arranged in the shell, the battery module comprises a plurality of first electric cores and second electric cores, gaps are formed between adjacent first electric cores, the second electric cores are at least partially positioned in the gaps, and the sizes of the first electric cores are inconsistent with those of the second electric cores; the cooling mechanism is disposed within the housing and at least partially within the gap for cooling the cylindrical battery pack. Because second electric core and cooling body all set up in the space between adjacent first electric core, on the one hand, can promote the inside volume utilization ratio of cylinder battery package, promote the energy density of battery package, on the other hand, can utilize this cooling body to realize the inside heat dissipation cooling of battery package, promote the performance of battery package.
Description
Technical Field
The utility model relates to the technical field of protective equipment, in particular to a cylindrical battery pack.
Background
The cylindrical battery has been applied to automobiles for 25 years since the first cylindrical lithium ion battery electric vehicle Prairie Joy EV was known in 1997. In 2008 Tesla Roadster adopts a loose 18650 battery, because 18650 cylindrical batteries have high automation degree, good consistency, high safety and lower cost, however 18650 battery single batteries are smaller, and the requirement of high capacity can be compensated by increasing the number of single batteries. Tesla model S uses 7104 batteries, which not only complicates the management system of the batteries, but also adds weight to the battery pack to a much lower energy density than the cells. On the premise that the field of raw materials does not obtain a great breakthrough, the volume of the cylindrical battery is increased to obtain more battery capacity, so that the cylindrical battery becomes the direction of the cylindrical vehicle battery. Tesla improves the energy density of the whole vehicle, reduces the system management cost, releases 21700 in 2017, and releases 46800 full-tab batteries in 2020, and the battery cell volume is also a strategy from small to large.
The diameter of the cylindrical battery cell is increased from 18mm to 46mm by 2.56 times. However, it can be predicted that the diameter 46mm is not necessarily the maximum diameter of the cylindrical battery cell, and the cylindrical diameter must be removed to a larger diameter after 46800 is mature so as to obtain larger single battery cell energy, and whether the battery cell is suitable for a whole vehicle or a two-wheel vehicle, the cylindrical battery in the future can be singly grouped like a square battery cell for electric friction, a handheld electric tool and the like.
As the diameter of the cylindrical battery cells increases, the gap between the battery cells can be larger during battery cell assembly.
Because of the shape of the cylindrical battery, gaps are formed between the battery cells, and when 18650 and 21700 are combined, a cooling system can be laid in the gaps between the battery cells to utilize the gaps. However, when the diameter of the cylinder is further increased, for example, when the cylinder cells of 4680/4690/4695/46120 or larger diameter are grouped, the gaps between the cells are further increased, and as the cells are increased, the heat inside the battery pack is also increased, which affects the performance of the battery pack. How to effectively improve the utilization rate of gaps and improve the energy density of the whole large cylinder and how to further reduce the heat dissipation of the high-energy battery pack is a problem to be solved.
Disclosure of Invention
The utility model provides a cylindrical battery pack, which can fully utilize gaps among battery cells to improve the energy density of the battery pack and improve the heat dissipation performance of the battery pack.
The present utility model provides a cylindrical battery pack comprising:
a housing;
the battery module is arranged in the shell and comprises a plurality of first electric cores and second electric cores, gaps are formed between the adjacent first electric cores, the second electric cores are at least partially positioned in the gaps, and the sizes of the first electric cores are inconsistent with those of the second electric cores;
and a cooling mechanism disposed within the housing and at least partially within the gap for cooling the cylindrical battery pack.
In one embodiment, the diameter of the first cell is greater than the diameter of the second cell.
In one embodiment, the diameter of the first cell is 1.5-3 times that of the second cell.
In one embodiment, the diameter of the first cell is 2-3 times that of the second cell.
In one embodiment, the cooling mechanism includes a cooling conduit at least partially disposed within the gap, the cooling conduit configured to circulate the cooling fluid to cool the cylindrical battery pack, a cooling fluid, and a temperature sensor configured to obtain a temperature within the cylindrical battery pack.
In an embodiment, be equipped with air intake and air outlet on the casing, cooling body includes radiator fan and temperature sensor, radiator fan sets up the air outlet is used for extracting the process the cylinder battery package draws the hot air, temperature sensor is used for obtaining the temperature in the cylinder battery package.
In one embodiment, the second battery cells are provided in plurality, and the plurality of first battery cells and the plurality of second battery cells are connected in series or in parallel.
In one embodiment, a plurality of the first battery cells are connected in series or in parallel to form a first battery pack, a plurality of the second battery cells are connected in series or in parallel to form a second battery pack, and the first battery pack and the second battery pack are connected in series or in parallel to form the battery module.
In one embodiment, the plurality of first cells are arranged in a dense or non-dense arrangement.
In one embodiment, the battery modules are provided in a plurality, and the plurality of battery modules are arranged in a single-layer or multi-layer structure.
According to the cylindrical battery pack, the battery module and the cooling mechanism are formed by the first battery cells and the second battery cells with different sizes, the second battery cells in the battery cell module are arranged in the gaps between the adjacent first battery cells, the volume utilization rate of the inside of the cylindrical battery pack can be improved, the energy density of the battery pack is improved, the cooling mechanism is further arranged in the gaps between the adjacent first battery cells, on one hand, the volume utilization rate of the inside of the battery pack can be improved, and on the other hand, the cooling mechanism can be used for realizing heat dissipation and cooling of the inside of the battery pack, so that the service performance of the battery pack is improved.
Drawings
FIG. 1 is a schematic diagram of a non-dense layer arrangement according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an arrangement of a second embodiment of the present utility model;
wherein: 100. the battery comprises a shell 200, a battery module 210, a first battery cell 220, a second battery cell 230 and a gap.
Detailed Description
The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present utility model. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present utility model have not been shown or described in the specification in order to avoid obscuring the core portions of the present utility model, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operational steps involved in the embodiments may be sequentially exchanged or adjusted in a manner apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of describing certain embodiments and are not necessarily intended to imply a required composition and/or order.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.
Referring to fig. 1-2, the present utility model provides a cylindrical battery pack, comprising a case 100, a battery module 200, and a cooling mechanism (not shown), wherein the battery module 200 is disposed in the case 100, the battery module 200 comprises a plurality of first cells 210 and second cells 220, a gap 230 is formed between adjacent first cells 210, the second cells 220 are at least partially disposed in the gap 230, and the size of the first cells 210 is not consistent with the size of the second cells 220; the cooling mechanism is disposed within the housing 100 and at least partially within the gap 230 for cooling the cylindrical battery pack.
Further, the first and second battery cells 210 and 220 are both cylindrical structures. The first electric core 210 and the second electric core 220 each comprise an anode and a cathode, a diaphragm, electrolyte, a shell, a top cover, a gasket, a current collecting disc and the like; the positive electrode comprises a positive electrode material, a binder, a conductive agent and a current collector; the positive electrode material is lithium iron phosphate, lithium manganate, ternary and the like; the positive current collector is aluminum foil or carbon-coated aluminum foil; the negative electrode comprises a negative electrode material, a binder, a conductive agent and a current collector; the negative electrode material is graphite, silicon carbon, silicon oxygen and the like; the negative current collector is copper foil or porous copper foil and the like; the positive and negative electrode conductive agents are in dot or linear or sheet shape or are mixed and used in dot, linear and sheet shape; the electrolyte is one of liquid, solid and semi-solid; the shell is made of metal, and can be specifically an aluminum shell, a steel shell or the like, and is hollow and cylindrical without bottom or with one end provided with a bottom; the top cover is of a structure with a flow breaking device and a pressure releasing function. Specific cylindrical cells are within the skill of the art and are not described herein in any way.
It is known that when a plurality of cylinders are arranged together, no matter how the cylinders are arranged, gaps always exist between adjacent cylinders due to shape limitation, and in the field of cylindrical battery packs, gaps also exist between a plurality of cylindrical battery cores, and the larger the diameter is, the larger the gaps are, so that the space utilization rate of the whole battery pack is reduced.
By adopting the mutually nested arrangement of the first battery cells 210 and the second battery cells 220 with inconsistent sizes, the space 230 between the adjacent cylindrical battery cells is fully utilized, the space utilization rate of the battery pack is improved, and the energy density of the battery pack is improved.
Further, the diameter of the first electric core 210 is larger than that of the second electric core 220, a gap 230 is formed between adjacent first electric cores 210, the second electric core 220 with a small diameter is arranged in the gap 230, the gap space is fully utilized, meanwhile, a cooling mechanism is arranged at the position where the second electric core 220 is not arranged, the gap between the electric cores is utilized to cool the inside of the battery pack, and the space utilization rate of the battery pack can be further improved while the battery performance is improved. The first battery cell 210 with a cylindrical shape with a diameter of 46mm or larger forms a gap 230, and the second battery cell 220 is matched with the gap 230 in size, and is nested in the gap 230, so that the gap is fully utilized.
Further, the diameters of the first cell 210 and the second cell 220 may be 14/18/21/26/32/46 and/or 50+/60+ larger in future, and the heights are determined by pack design, and may be the same as the current standard size or the height of the large-diameter cell.
Because in the battery field, when designing according to standard size, the diameter is little electric core, and the height is also generally less, and the height of second electric core 220 is less than first electric core 210 promptly, and the two nest the back that sets up, more space has been gone up in the second electric core 220 height, and this space can be used for setting up reinforced structure to promote the stability of connection, further, realizes the make full use of in space.
Further, the diameter of the first cell 210 is 1.5-3 times that of the second cell 220.
Preferably, the diameter of the first cell 210 is 2-3 times that of the second cell 220.
Further, it is preferable that the diameter relationship between the first cell 210 and the second cell 220 is Φ:Φ (2 (1/2) -1) the space utilization of the cylindrical battery pack can be improved, the energy density can be improved, and the volume utilization increases with the logarithmic function as the number of the electric cores increases.
In another preferred embodiment, the diameter relationship between the first cell 210 and the second cell 220 is Φ/2, which improves the space utilization of the cylindrical battery pack, improves the energy density, and increases the volume utilization as the number of cells increases and as the logarithmic function increases.
Further, the cooling mechanism comprises a cooling pipeline, cooling liquid and a temperature sensor, the heat dissipation and the temperature reduction inside the cylindrical battery pack are realized through a liquid cooling mode, the cooling pipeline is at least partially arranged in the gap 230, the cooling pipeline is used for circulating the cooling liquid so as to cool the cylindrical battery pack, and the temperature sensor is used for acquiring the temperature inside the cylindrical battery pack.
Further, the cooling liquid comprises at least one of an alcohol type cooling liquid, a glycerin type cooling liquid, an ethylene glycol type cooling liquid and a propylene glycol type cooling liquid.
In another embodiment, the cylindrical battery pack is cooled by cooling in an air-cooling circulation mode, an air inlet and an air outlet (not shown in the figure) are provided on the housing 100, the cooling mechanism includes a cooling fan and a temperature sensor, the cooling fan is disposed at the air outlet and is used for extracting air passing through the cylindrical battery pack to absorb heat, and the temperature sensor is used for obtaining the temperature in the cylindrical battery pack.
When the air cooling circulation is cooled, cold air enters the whole cylindrical battery pack from the air inlet, circulates along the air pipe or the air duct, takes away heat at the position where the cold air passes, and then extracts and discharges the air with heat through the cooling fan at the air outlet, so that the purposes of heat dissipation and cooling are achieved.
Of course, in other embodiments, other heat dissipation and cooling manners may be used, such as adding a heat-conducting pad (device) or adding a heat dissipation hole.
Further, the second battery cells 220 are provided with a plurality of first battery cells 210 and second battery cells 220 connected in series or in parallel, and the specific connection mode is selected according to the use requirement of the cylindrical battery pack.
Further, in an embodiment, the serial-parallel connection manner includes that a plurality of the first electric cells 210 are connected in series or in parallel to form a first battery pack, and a plurality of the second electric cells 220 are connected in series or in parallel to form a second battery pack, and the first battery pack and the second battery pack are connected in series or in parallel to form the battery module 200; that is, the structures of the plurality of first electric cores 210 connected in series and the plurality of second electric cores 220 connected in series may be connected in parallel, and the plurality of first electric cores 210 connected in parallel and the plurality of second electric cores 220 connected in series are connected in series or in parallel; the plurality of first electric cores 210 are connected in parallel and then connected in series or in parallel with the plurality of second electric cores 220 connected in parallel; the plurality of first cells 210 are connected in series and then connected in series or parallel with the plurality of second cells 220 connected in parallel.
Further, in another embodiment, the series-parallel connection manner further includes that the first battery cell 210 and the second battery cell 220 are connected in parallel to form a third battery pack, and a plurality of third battery packs are connected in series to form the battery module 200.
Further, the plurality of first electric cells 210 are arranged in a dense or non-dense manner, and are reasonably arranged in combination with the sizes of the first electric cells 210 and the second electric cells 220, so as to achieve the maximum volume utilization rate.
Further, a plurality of battery modules 200 are provided, and a plurality of battery modules 200 are arranged in a single-layer or multi-layer structure.
Example 1
Referring to fig. 1, the first electric cells 210 are arranged in a non-sealing manner, the diameter Φ1 of each first electric cell 210 is 46mm, the distance between two adjacent first electric cells 210 is 19.05mm, and a second electric cell 220 with the diameter Φ2 of 18mm can be nested in the middle. As shown in the arrangement mode, the space utilization rate after nesting is 78.54%, the space utilization rate after nesting is 84.95%, the space utilization rate is improved by 6.4%, the space utilization rate is also increased by a logarithmic function with the increase of the arrangement quantity through calculation, and the capacity and the energy of the battery pack are greatly increased through the arrangement mode. And a cooling mode is added in the rest pore areas, and circulating air cooling is adopted at this time, so that the heat productivity of the battery pack can be reduced.
Example two
Referring to fig. 2, the first cells 210 are arranged in a close manner, that is, in a tight manner, the diameter Φ1 of the first cells 210 is 46mm, the minimum distance between the shadow portions a is 5.2mm, and the gap is too small to nest a power cylindrical cell capable of being charged and discharged secondarily in the middle. Part B has a clearance a=23 mm and b=33.67 mm, and this part region can nest a second cell 220 with a diameter Φ3 of 21 mm. In the arrangement shown in the figure, the space utilization rate of the non-nested space is 80.49%, the space utilization rate after nesting is 82.89%, and the space utilization rate is improved by 2.4%. The space utilization is calculated to increase as a logarithmic function with increasing number of arrangements by which the capacity and energy of the battery pack is greatly increased. And a cooling mode is added in other pore areas, for example, a cooling mechanism is arranged in the area A, and circulating air cooling is adopted at this time, so that the heating value of the battery pack can be reduced.
The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.
Claims (10)
1. A cylindrical battery pack, comprising:
a housing;
the battery module is arranged in the shell and comprises a plurality of first electric cores and second electric cores, gaps are formed between the adjacent first electric cores, the second electric cores are at least partially positioned in the gaps, and the sizes of the first electric cores are inconsistent with those of the second electric cores;
and a cooling mechanism disposed within the housing and at least partially within the gap for cooling the cylindrical battery pack.
2. The cylindrical battery pack of claim 1, wherein the diameter of the first cell is greater than the diameter of the second cell.
3. A cylindrical battery pack as in claim 2, wherein said first cell has a diameter that is 1.5-3 times that of said second cell.
4. A cylindrical battery pack as in claim 3, wherein said first cell has a diameter that is 2-3 times greater than said second cell.
5. The cylindrical battery pack according to claim 1, wherein the cooling mechanism comprises a cooling conduit at least partially disposed within the gap, the cooling conduit being in fluid communication with the cooling fluid to cool the cylindrical battery pack, a cooling fluid, and a temperature sensor to obtain a temperature within the cylindrical battery pack.
6. The cylindrical battery pack according to claim 1, wherein the housing is provided with an air inlet and an air outlet, the cooling mechanism comprises a heat radiation fan and a temperature sensor, the heat radiation fan is arranged at the air outlet and is used for extracting air which passes through the cylindrical battery pack and absorbs heat, and the temperature sensor is used for acquiring the temperature in the cylindrical battery pack.
7. The cylindrical battery pack according to claim 1, wherein a plurality of the second cells are provided, and a plurality of the first cells and the second cells are connected in series or in parallel.
8. The cylindrical battery pack according to claim 7, wherein a plurality of the first cells are connected in series or in parallel to form a first battery pack, a plurality of the second cells are connected in series or in parallel to form a second battery pack, and the first battery pack and the second battery pack are connected in series or in parallel to form the battery module.
9. The cylindrical battery pack as claimed in claim 1, wherein a plurality of the first cells are arranged in a dense or non-dense arrangement.
10. The cylindrical battery pack according to claim 1, wherein a plurality of the battery modules are provided, and a plurality of the battery modules are provided in a single-layer or multi-layer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321675946.9U CN220155675U (en) | 2023-06-29 | 2023-06-29 | Cylindrical battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321675946.9U CN220155675U (en) | 2023-06-29 | 2023-06-29 | Cylindrical battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220155675U true CN220155675U (en) | 2023-12-08 |
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ID=89007506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321675946.9U Active CN220155675U (en) | 2023-06-29 | 2023-06-29 | Cylindrical battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220155675U (en) |
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2023
- 2023-06-29 CN CN202321675946.9U patent/CN220155675U/en active Active
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