CN111435715B - Bottom supporting plate for battery core, battery pack with bottom supporting plate and vehicle - Google Patents
Bottom supporting plate for battery core, battery pack with bottom supporting plate and vehicle Download PDFInfo
- Publication number
- CN111435715B CN111435715B CN201911401942.XA CN201911401942A CN111435715B CN 111435715 B CN111435715 B CN 111435715B CN 201911401942 A CN201911401942 A CN 201911401942A CN 111435715 B CN111435715 B CN 111435715B
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- supporting plate
- plate body
- hole
- bottom supporting
- electric core
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000012858 packaging process Methods 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 239000003792 electrolyte Substances 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 34
- 239000011258 core-shell material Substances 0.000 description 10
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a bottom support plate for a battery cell, a battery pack with the bottom support plate and a vehicle with the bottom support plate. This bottom suspension board includes: the multi-layer bottom supporting plate comprises a plurality of layers of bottom supporting plate bodies, wherein the plurality of layers of bottom supporting plate bodies are connected, at least one through hole is formed in each layer of bottom supporting plate body, the through holes of the plurality of layers of bottom supporting plate bodies are staggered with each other, and a liquid channel communicated with the through holes of the adjacent two layers of bottom supporting plate bodies is formed between the adjacent two layers of bottom supporting plate bodies. The bottom plate is the multilayer formula layer board, and all be equipped with the through-hole on every layer, and can communicate through fluid passage between the through-hole on every layer, thereby guarantee that electrolyte can flow through the bottom plate smoothly, guarantee that electric core utmost point group can normally be soaked, and because stagger each other between the through-hole on the multilayer, guarantee that multilayer bottom plate is better to the insulating properties between electric core utmost point group and the electric core casing, avoid burr or metal fillings to communicate electric core utmost point group and electric core casing bottom, cause the risk of electric core self discharging and short circuit, thereby guarantee that the insulating nature of electric core is good.
Description
Technical Field
The invention relates to the technical field of battery cells, in particular to a bottom supporting plate for a battery cell, a battery pack with the bottom supporting plate and a vehicle with the bottom supporting plate.
Background
At present, the new energy is being vigorously developed all over the country, especially, the vehicle industry, more and more vehicle enterprises begin to research and develop and make electric automobile nowadays, electric core is as electric automobile's core component and energy source, more be the focus of research now, the bottom plate is as partly in the electric core major structure spare of electric core, integrate inside electric core, be located between electric core utmost point group and the electric core casing, mainly play the insulating action, wherein, in order to improve the infiltration efficiency of electrolyte to electric core utmost point group, need set up the through-hole on the bottom plate, however, most bottom plates are single layer construction at present, exist when electric core utmost point group or electric core casing self burr, or after electric core stands long-term circulation vibrations and strikes, when the metal fillings appear, if the through-hole is worn to establish to the metal fillings, then have the danger that leads to taking place the short circuit between electric core utmost point group and the electric core casing.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention provides a bottom support plate for a battery cell, which is of a multilayer structure and can ensure good insulation between a battery cell pole group and a battery cell shell.
The invention also provides a battery pack with the bottom supporting plate for the battery core.
The invention also provides a vehicle with the battery pack.
According to the embodiment of the present invention, the bottom support plate for a battery cell is located between a battery cell casing and a battery cell pole group of the battery cell, and the bottom support plate includes: the bottom supporting plate comprises a plurality of layers of bottom supporting plate bodies, wherein the bottom supporting plate bodies are connected in a multi-layer mode, at least one through hole is formed in each layer of bottom supporting plate body, the through holes of the bottom supporting plate bodies are staggered in a multi-layer mode, and a liquid channel communicated with the through holes of the adjacent two layers of bottom supporting plate bodies is formed between the adjacent two layers of bottom supporting plate bodies.
According to some embodiments of the invention, the multi-layer bottom pallet body comprises: the bottom plate comprises a first bottom plate body and a second bottom plate body, wherein a first through hole group is arranged on the first bottom plate body, a second through hole group is arranged on the second bottom plate body, and the first through hole group and the second through hole group are staggered mutually.
Further, the first through hole group comprises a plurality of first through holes which are arranged in a first through hole row of at least one column at intervals, the second through hole group comprises a plurality of second through holes which are arranged in a second through hole row of at least one column at intervals;
the surface of the first bottom support plate body facing the second bottom support plate body and/or the surface of the second bottom support plate body facing the first bottom support plate body are/is provided with a liquid through groove, and the first through hole row and the second through hole row are communicated with the liquid through groove.
Further, the through hole on the bottom support plate body provided with the liquid through groove is formed in the position of the liquid through groove, and the through hole on the bottom support plate body not provided with the liquid through groove is aligned with the liquid through groove.
According to some embodiments of the present invention, the plurality of layers of bottom bracket plate bodies are connected by a continuous or discontinuous hot-melt packaging process.
According to some embodiments of the invention, a plurality of layers of the bottom bracket body are peripherally encapsulated.
According to some embodiments of the invention, the bottom bracket plate body is an insulating plate.
Further, the bottom supporting plate body is a PP plate.
Compared with the prior art, the bottom supporting plate for the battery cell has the following advantages:
the bottom layer board is the multilayer formula layer board, and all be equipped with the through-hole on every layer, and can communicate through fluid passage between the through-hole on every layer, thereby guarantee that electrolyte can flow through the bottom layer board smoothly, guarantee that electric core utmost point group can normally be soaked, and, because stagger each other between the through-hole on the multilayer, can guarantee that multilayer bottom layer board is better to the insulating properties between electric core utmost point group and the electric core casing, avoid burr or metal fillings to communicate electric core utmost point group and electric core casing bottom, cause the risk of electric core self discharging and short circuit, thereby guarantee that the insulating nature of electric core is good.
According to another aspect of the present invention, a battery pack includes a battery cell, the battery cell including: the battery core comprises a battery core shell, a battery core pole group and a bottom supporting plate for a battery core, wherein the battery core pole group is positioned in the battery core shell, and the bottom supporting plate is positioned between the battery core shell and the battery core pole group.
According to another aspect of the embodiment of the invention, the vehicle comprises the battery pack, and the vehicle is an electric vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic view of a bottom pallet for a cell;
FIG. 2 is a disassembled schematic view of the bottom plate;
FIG. 3 is a schematic view of a second bottom bracket body with a fluid communication groove.
Reference numerals:
the bottom supporting plate comprises a bottom supporting plate 10, a first bottom supporting plate body 1, a first through hole group 11, a first through hole 12, a second bottom supporting plate body 2, a second through hole group 21, a second through hole 22 and a liquid through groove 3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "front", "rear", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
A bottom pallet 10 for a battery cell according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 3.
Referring to fig. 1, a bottom support plate 10 for a battery cell according to an embodiment of the present invention is located between a cell casing and a battery cell pole group of the battery cell, and the bottom support plate 10 may include: the multi-layer bottom supporting plate comprises a plurality of layers of bottom supporting plate bodies, wherein the plurality of layers of bottom supporting plate bodies are connected, at least one through hole is formed in each layer of bottom supporting plate body, the through holes of the plurality of layers of bottom supporting plate bodies are staggered with each other, and a liquid channel communicated with the through holes of the adjacent two layers of bottom supporting plate bodies is formed between the adjacent two layers of bottom supporting plate bodies.
That is, the bottom pallet 10 is a multi-layer pallet, and each layer of bottom pallet body is provided with through holes, and the through holes of each layer of bottom pallet body can be communicated through a liquid channel, thereby ensuring that the electrolyte can smoothly flow through the bottom supporting plate 10, ensuring that the battery core pole group can be normally infiltrated, and, because the through holes on the multiple layers are staggered, the insulating performance of the bottom supporting plate 10 on the multiple layers to the battery core pole group and the battery core shell can be better ensured, namely when burrs exist on the pole piece or the cell shell or metal chips appear after the cell is subjected to long-term cyclic vibration and impact, the through-hole that staggers each other still can realize electric core utmost point group and electric core shell between insulating, avoids burr or metal fillings to communicate electric core utmost point group and electric core shell bottom, causes the risk of the self-discharge of electric core self and short circuit to guarantee that the insulating nature between electric core utmost point group and the electric core shell is good.
In a specific embodiment, when burrs or metal chips pass through the through holes on the topmost layer of the bottom support plate 10 at the battery cell pole group, the burrs or metal chips are still blocked by the lower layer of the bottom support plate 10, so that the battery cell pole group and the battery cell shell are insulated; when there is burr or metal fillings in electric core casing bottom through-hole through the bottommost layer of bottom plate 10, still can be blockked by the upper strata of bottom plate 10, and then play insulating effect between electric core utmost point group and electric core casing to can guarantee that the insulating nature between electric core utmost point group and the electric core casing is good.
According to the bottom supporting plate 10 for the battery cell provided by the embodiment of the invention, the bottom supporting plate 10 is a multilayer supporting plate, through holes are formed in each layer, and the through holes in each layer can be communicated through a liquid channel, so that electrolyte can smoothly flow through the bottom supporting plate 10, the battery cell pole group can be normally soaked, and due to the fact that the through holes in the multiple layers are staggered, the multilayer bottom supporting plate 10 can be better in insulating property between the battery cell pole group and a battery cell shell, the risk of self-discharge and short circuit of the battery cell caused by the fact that burrs or metal chips communicate the battery cell pole group with the bottom of the battery cell shell is avoided, and the insulating property of the battery cell is good.
Further, as shown in fig. 2, the multi-layer bottom bracket body includes: the bottom supporting plate comprises a first bottom supporting plate body 1 and a second bottom supporting plate body 2, wherein a first through hole group 11 is arranged on the first bottom supporting plate body 1, a second through hole group 21 is arranged on the second bottom supporting plate body 2, and the first through hole group 11 and the second through hole group 21 are staggered.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
That is to say, the backing plate 10 is two laminar layer boards, be first backing plate body 1 and second backing plate body 2 respectively, and all be equipped with a plurality of through-holes on first backing plate body 1 and the second backing plate body 2, with first through-hole group 11 and second through-hole group 21 of formation, thereby it is great to guarantee that the flow of electrolyte flow through backing plate 10, guarantee that the electric core utmost point group is soaked efficient, and first through-hole group 11 staggers each other with second through-hole group 21, thereby can prevent burr or metal fillings from communicateing electric core utmost point group and electric core casing bottom.
In the embodiment shown in fig. 1-2, the first bottom plate body 1 is located above the second bottom plate body 2 and is fixedly connected to the second bottom plate body 2, in other embodiments, the first bottom plate body 1 can be located below the second bottom plate body 2, and only the first through hole group 11 and the second through hole group 21 need to be staggered.
Further, as shown in fig. 2 and fig. 3, the first through hole group 11 includes a plurality of first through holes 12, the plurality of first through holes 12 are arranged at intervals to form at least one first through hole row, the second through hole group 21 includes a plurality of second through holes 22, the plurality of second through holes 22 are arranged at intervals to form at least one second through hole row, the surface of the first bottom plate body 1 facing the second bottom plate body 2 and/or the surface of the second bottom plate body 2 facing the first bottom plate body 1 are provided with liquid passing grooves 3, and both the first through hole row and the second through hole row are communicated with the liquid passing grooves 3, so that the first through hole row and the second through hole row can be communicated, the electrolyte in the battery cell can be ensured to flow more smoothly, and the electrolyte can be further infiltrated into the battery cell electrode group.
In the embodiment shown in fig. 2, the liquid passing groove 3 is provided only on the second bottom bracket plate body 2, and in other embodiments not shown, the liquid passing groove 3 may be provided on the first bottom bracket plate body 1.
Further, the through hole on the bottom plate body provided with the liquid through groove 3 is opened at the liquid through groove 3, the through hole on the bottom plate body not provided with the liquid through groove 3 is aligned with the liquid through groove 3, namely, the first through hole 12 and the second through hole 22 can be communicated through the liquid through groove 3.
In a specific embodiment, for the bottom support plate body with the liquid through groove 3, the liquid through groove 3 can be formed by hot press molding, and then the through holes are formed in the liquid through groove 3, so that the through holes can be all located in the liquid through groove 3.
According to some embodiments of the present invention, the multi-layer bottom bracket body is connected to the bottom bracket body by a continuous or discontinuous hot-melt packaging process.
Preferably, the multiple layers of bottom support plate bodies are connected through a discontinuous hot-melting packaging process, so that the connection between the multiple layers of bottom support plate bodies is firm, and electrolyte can circulate from the unconnected positions, thereby further improving the efficiency of infiltrating the battery core electrode group.
Further, the periphery of the multi-layer bottom support plate body is packaged.
Further, the bottom supporting plate body is an insulating plate, so that insulation between the battery cell pole group and the battery cell aluminum shell is guaranteed.
Further, the bottom plate body can be the PP board, and the insulating nature of PP board is good, and the thickness of PP board is thinner, consequently, can guarantee that the difference is less compared with current bottom plate thickness of bottom plate 10's thickness to can guarantee to directly use bottom plate 10 on the basis of original electric core structure, reduce other design cost.
In addition, the bottom support plate 10 with the same thickness has a more obvious supporting and buffering effect on the battery cell pole group compared with the single-layer bottom support plate 10.
According to another aspect of the present invention, a battery pack includes a battery cell, the battery cell including: the battery comprises a battery core shell, a battery core pole group and the bottom supporting plate 10 for the battery core, wherein the battery core pole group is positioned in the battery core shell, and the bottom supporting plate 10 is positioned between the battery core shell and the battery core pole group.
According to another aspect of the present invention, the vehicle may be an electric vehicle, and the battery pack may be a power battery pack for providing driving force to the vehicle.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A bottom pallet for a battery cell, the bottom pallet (10) being located between a cell casing and a cell pole set of the battery cell, characterized in that the bottom pallet (10) comprises:
multilayer bottom plate body, multilayer the bottom plate body links to each other, every layer be equipped with at least one through-hole on the bottom plate body, and the multilayer stagger each other between the through-hole of bottom plate body, and adjacent two-layer be formed with between the bottom plate body with the liquid channel that the through-hole of adjacent two-layer bottom plate body is linked together, the multilayer the bottom plate body includes: the supporting plate comprises a first supporting plate body (1) and a second supporting plate body (2), wherein a first through hole group (11) is arranged on the first supporting plate body (1), a second through hole group (21) is arranged on the second supporting plate body (2), the first through hole group (11) and the second through hole group (21) are staggered with each other, the first through hole group (11) comprises a plurality of first through holes (12), the first through holes (12) are arranged into at least one first through hole row at intervals, the second through hole group (21) comprises a plurality of second through holes (22), and the second through holes (22) are arranged into at least one second through hole row at intervals;
the surface of the first bottom supporting plate body (1) facing the second bottom supporting plate body (2) and/or the surface of the second bottom supporting plate body (2) facing the first bottom supporting plate body (1) are provided with liquid passing grooves (3), and the first through hole row and the second through hole row are communicated with the liquid passing grooves (3).
2. The bottom plate for electric cores of claim 1, wherein the through holes of the bottom plate body provided with the liquid through grooves (3) are opened at the liquid through grooves (3), and the through holes of the bottom plate body not provided with the liquid through grooves (3) are aligned with the liquid through grooves (3).
3. The bottom carrier plate for the battery cells of claim 1, wherein the plurality of layers of the bottom carrier plate bodies are connected through a continuous or discontinuous hot-melt packaging process.
4. The bottom carrier for battery cells of claim 1, wherein a plurality of layers of the bottom carrier body are peripherally encapsulated.
5. The bottom bracket plate for the battery cell of claim 1, wherein the bottom bracket plate body is an insulating plate.
6. The bottom bracket plate for the electric core according to claim 5, wherein the bottom bracket plate body is a PP plate.
7. A battery pack, comprising a cell, the cell comprising:
a cell shell;
a cell pole set located within the electrical core housing;
the bottom pallet (10) for cells of any of claims 1-6, the bottom pallet (10) being located between the cell casing and the cell pole set.
8. A vehicle characterized by comprising the battery pack according to claim 7, the vehicle being an electric vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401942.XA CN111435715B (en) | 2019-12-30 | 2019-12-30 | Bottom supporting plate for battery core, battery pack with bottom supporting plate and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401942.XA CN111435715B (en) | 2019-12-30 | 2019-12-30 | Bottom supporting plate for battery core, battery pack with bottom supporting plate and vehicle |
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| Publication Number | Publication Date |
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| CN111435715A CN111435715A (en) | 2020-07-21 |
| CN111435715B true CN111435715B (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911401942.XA Active CN111435715B (en) | 2019-12-30 | 2019-12-30 | Bottom supporting plate for battery core, battery pack with bottom supporting plate and vehicle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023197161A1 (en) * | 2022-04-12 | 2023-10-19 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electric device |
| CN116387640B (en) * | 2023-05-31 | 2023-07-28 | 深圳海辰储能控制技术有限公司 | Energy storage device and electric equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394063A (en) * | 2016-05-16 | 2017-11-24 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN109411644A (en) * | 2018-12-11 | 2019-03-01 | 成都市银隆新能源产业技术研究有限公司 | Battery core film and battery |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
-
2019
- 2019-12-30 CN CN201911401942.XA patent/CN111435715B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394063A (en) * | 2016-05-16 | 2017-11-24 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN109411644A (en) * | 2018-12-11 | 2019-03-01 | 成都市银隆新能源产业技术研究有限公司 | Battery core film and battery |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
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