CN112652846B - Battery cell, battery assembly and automobile - Google Patents
Battery cell, battery assembly and automobile Download PDFInfo
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- CN112652846B CN112652846B CN202110068262.1A CN202110068262A CN112652846B CN 112652846 B CN112652846 B CN 112652846B CN 202110068262 A CN202110068262 A CN 202110068262A CN 112652846 B CN112652846 B CN 112652846B
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- battery
- battery cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention belongs to the technical field of power batteries, and discloses a battery cell, a battery assembly and an automobile. Wherein electric core includes: the battery cell top plate is arranged into a flat plate structure with a plurality of edges; the battery cell bottom plate and the battery cell top plate have the same shape, and the projection of the battery cell bottom plate along the Z-axis direction is superposed with the battery cell top plate; and the battery cell side wall is arranged between the battery cell top plate and the battery cell bottom plate along the Z-axis direction, at least one side surface in each side surface of the battery cell side wall is provided with a protruding part, and at least one other side surface is provided with a concave part, so that different battery cells are mutually clamped through the protruding part and the concave part. For electric core, electric core lateral wall forms bulge and depressed part, can be through the mutual joint of bulge and depressed part between the different electric cores to fix spacingly.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a battery core, a battery assembly and an automobile.
Background
The new energy automobile has the advantages of high energy efficiency, zero emission, no pollution, high specific energy, low noise, high reliability and the like. The power battery system is used as a main energy storage component of the new energy automobile, and the functions of whole automobile running, brake energy recovery, energy regulation of a hybrid power engine system and the like are ensured. The importance of the battery cells as a core component of the battery assembly is self-evident.
The current cylindrical and square battery cores mainly have two problems: 1. the battery core cannot be fixed and limited and must be assembled into a specific battery module integrated battery assembly; 2. the heat dissipation area is small, the heat transfer efficiency between the battery cores is poor, and the temperature consistency between the battery cores is poor easily.
Disclosure of Invention
The invention aims to provide a battery cell to solve the problem that the battery cells cannot be fixed and limited.
The invention further aims to provide a battery assembly to solve the problems that the battery cores cannot be fixed and limited and the heat dissipation area is small.
The invention further aims to provide an automobile, so that the problems that the battery cores cannot be fixed and limited and the heat dissipation area is small are solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cell, comprising:
the battery cell top plate is arranged into a flat plate structure with a plurality of edges;
the battery cell bottom plate and the battery cell top plate have the same shape, and the projection of the battery cell bottom plate along the Z-axis direction is superposed with the battery cell top plate; and
the battery cell side wall is arranged between the battery cell top plate and the battery cell bottom plate along the Z-axis direction, wherein:
at least one side of each side of the battery cell side wall is provided with a protruding part, and at least one other side is provided with a recessed part, so that different battery cells are mutually clamped and connected through the protruding parts and the recessed parts.
As a preferable scheme of the battery cell, the battery cell top plate has 2N edges, the lengths of the edges are the same, and the degrees of included angles formed between any two adjacent edges are the same.
The battery core top plate is provided with 2N edges, the lengths of the edges are the same, and then the included angle between any two adjacent edges is the same, so that the battery core top plate is provided with a regular polygon structure, and the symmetry is better.
As a preferable scheme of the battery cell, in the 2N edges, a protrusion is disposed in the middle of each of the N edges connected in sequence, the protrusion is formed at the end of the protruding portion, a groove is disposed in the middle of each of the other N edges connected in sequence, and the groove is formed at the end of the recessed portion.
A protrusion is arranged on the continuous N edges, and grooves are arranged on the other N edges, so that clamping connection can be conveniently carried out from different edges.
As a preferred scheme of the battery cell, the protrusion and the groove are both arc-shaped structures, and the radiuses of the arc-shaped structures are the same.
The arc-shaped bulge and the arc-shaped groove are more convenient for mutual clamping and matching, and are not easy to scratch hands.
As a preferred scheme of the battery cell, the battery cell top plate is provided with an anode pole, a cathode pole, an explosion-proof valve and a glue guide hole, wherein the glue guide hole penetrates from the battery cell top plate to the battery cell bottom plate along a Z axis, and heat-conducting glue is injected into the glue guide hole.
The battery cell comprises the glue guide hole, and heat-conducting glue can be injected through the structure, so that the temperature inside the battery cell is uniform, and the service life of the battery cell is prolonged; the heat-conducting glue can fix the battery cell in the box body, and the heat-conducting structure glue can play a role in heat preservation, so that the influence of the external temperature and the battery cell is avoided.
As a preferable scheme of the battery core, the heat-conducting glue overflows from the glue-conducting hole.
The heat-conducting glue overflows from the glue guide hole and can ensure the quantity of the heat-conducting glue, so that the fixed bonding performance of the bottom of the electric core is ensured, and meanwhile, the heat is rapidly dissipated through the glue guide hole in the electric core, so that the heat dissipation effect of the electric core is ensured.
As a preferable scheme of the battery cell, six edges are arranged on the top plate of the battery cell.
The battery core top plate is of a regular hexagon structure, the battery core integrally forms a hexagonal prism structure, each battery core side wall of the battery core can be connected with the battery core side wall of another battery core in a clamped mode, and therefore the heat exchange area between the battery cores is large, heat can be conducted quickly, and the temperature consistency of the battery is achieved.
The invention also provides a battery assembly which comprises the battery cores, and two adjacent battery cores are mutually clamped and connected through the convex parts and the concave parts.
As a preferable aspect of the battery assembly, the battery assembly further includes:
the battery cell box comprises a box body, wherein a plurality of battery cells which are clamped with each other are arranged in the box body; and
and the limiting structure is arranged between the box side wall of the box body and the electric core positioned on the outermost side so as to fix the electric core.
Connect into a whole through bulge and depressed part arc joint between the electric core, the mutual butt of case lateral wall and outermost electric core of rethread stop gear and box, and then fixed electric core.
The invention further provides an automobile which comprises the battery assembly.
The invention has the beneficial effects that:
for electric core, electric core lateral wall forms bulge and depressed part, can be through the mutual joint of bulge and depressed part between the different electric cores to fix spacingly.
To the battery assembly, electric core lateral wall forms bulge and depressed part, can keep better fixed action between the adjacent electric core through the mutual joint of bulge and depressed part between the different electric cores, and the bottom of electric core is fixed in the box through heat-conducting glue, further improves the fixed action of electric core to heat-conducting glue can improve electric core heat dissipation.
For the automobile, the battery assembly has better fixity and better heat dissipation effect, so that the automobile has higher energy efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a battery cell according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another view angle of the battery cell according to the embodiment of the present application;
FIG. 3 is a schematic structural diagram of a battery assembly according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another view angle of the battery assembly according to the embodiment of the present application.
In the figure:
1-cell roof; 11-edge; 111-bumps; 112-a groove; 12-positive pole column; 13-negative electrode post; 14-an explosion-proof valve; 15-glue guiding holes;
2-electric core bottom plate;
3-side wall of electrical core; 31-a projection; 32-a recess;
4-a box body;
5-a limit structure.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used based on the orientations or positional relationships shown in the drawings for convenience of description and simplicity of operation, 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" and "second" are used only for descriptive purposes and are not intended to be limiting.
The invention provides a battery cell, fig. 1 is a schematic structural diagram of the battery cell in the embodiment of the application, and fig. 2 is a schematic structural diagram of another view angle of the battery cell in the embodiment of the application, as shown in fig. 1 and fig. 2, the battery cell has a cell top plate 1, a cell bottom plate 2 and a cell side wall 3, the cell top plate 1 is a flat plate structure with a plurality of edges 11, the cell bottom plate 2 and the cell top plate 1 have the same shape, and when the cell top plate 1 projects downwards to the cell bottom plate 2 along a vertical direction (Z-axis direction), the two projections coincide, the cell side wall 3 is vertically between the cell top plate 1 and the cell bottom plate 2 along the vertical direction, the cell top plate 1, the cell bottom plate 2 and the cell side wall 3 are hermetically connected to form a cavity, and a battery material is arranged in the cavity.
In this embodiment of the present application, the length of the cell sidewall 3 in the Z-axis direction (the height of the cell) is much greater than the length of the edge 11, and further, the ratio of the length of the cell sidewall 3 in the Z-axis direction to the length of the edge 11 is 10:1.
in the embodiment of the present application, the length of the cell sidewall 3 along the Z-axis direction is 300mm, and the length of the edge 11 is 30mm.
At least one side surface of each side surface of the cell side wall 3 is provided with a convex part 31, and at least the other side surface is provided with a concave part 32, so that different cells are mutually clamped and connected through the convex part 31 and the concave part 32.
Further, in the embodiment of the present application, the cell core top plate 1 is provided with six edges 11, each edge 11 has the same length, and an included angle between two adjacent edges 11 is 120 °. The battery cell is of a structure similar to a hexagonal prism or a honeycomb structure, and different battery cells are combined to be in different shapes.
The battery cell can be in mutual contact with other battery cells through six circumferential surfaces, the heat exchange area is large, heat can be conducted quickly, and the temperature consistency of the battery is realized. Meanwhile, the battery cell can be more easily fixed and assembled through the convex part 31 and the concave part 32, so that the fixing structure is saved, and the installation time is reduced.
It should be noted that, the cell roof plate 1 may also be configured as a quadrangle, an octagon, etc., when the cell roof plate 1 is a rectangle, that is, if the cells are cuboids, the cells can only be spliced from four directions, i.e., from front to back, from left to right, and the combined shape is not as many as the types of the spliced hexagonal prism structures.
Further, the middle of three of the edges 11 connected in sequence is provided with a protrusion 111, the top end of the protrusion 31 is the protrusion 111, in other words, the protrusion 111 extends downwards to the cell bottom plate 2 along the Z-axis direction to form the protrusion 31, the middle of the other three edges 11 is provided with a groove 112, and the top end of the recess 32 is the groove 112, in other words, the groove 112 extends downwards to the cell bottom plate 2 along the Z-axis direction to form the recess 32.
Further, the protrusion 111 and the groove 112 are both configured as circular arc structures, and the radii of the circular arc structures are the same.
With continued reference to fig. 1 and fig. 2, the cell top plate 1 is provided with an anode post 12, a cathode post 13, an explosion-proof valve 14, and a glue guiding hole 15, wherein the glue guiding hole 15 penetrates from the cell top plate 1 to the cell bottom plate 2 along the Z axis, and heat-conducting glue is injected into the glue guiding hole 15. In the embodiment of the present application, the glue guiding hole 15 is a cylindrical hole, and is convenient to be matched with a gun head of a glue injection gun.
Further, the heat conductive paste overflows from the paste guide hole 15. In other words, the inside of the glue guide hole 15 is filled with the heat conductive glue, and the heat conductive glue overflows from the glue guide hole 15. When the temperature is higher, the heat absorbed by the heat-conducting glue can be transferred to the top of the heat-conducting glue, so that the heat dissipation effect of the battery cell is ensured; when the temperature is lower, the heat-conducting glue can play a role in heat preservation, and the influence of the external temperature and the battery cell is avoided.
It should be noted that, if the battery cell top plate 1 is set as a regular octagon, four battery cells are connected in sequence to form a ring, a hollow area can be formed at the center, and heat conducting glue can be injected into the hollow area, so that the heat dissipation and heat preservation effects of the battery cells are further ensured.
Fig. 3 is a schematic structural diagram of a battery assembly according to an embodiment of the present application, and fig. 4 is a schematic structural diagram of another view angle of the battery assembly according to the embodiment of the present application, as shown in fig. 1 to fig. 4, the battery assembly includes a plurality of battery cells, and the battery cells are clamped with each other through respective protruding portions 31 and recessed portions 32.
The battery assembly can realize the uniform distribution arrangement of the battery cores, improve the space utilization rate of the battery assembly, improve the energy density of the battery assembly and further improve the endurance mileage of the electric automobile.
The battery assembly further comprises a box body 4, wherein the battery core is loaded in the box body 4, and it should be noted that the heat-conducting glue overflows from the bottom of the glue-conducting hole 15 and is connected to the bottom of the box body 4.
The battery assembly further comprises a limiting structure 5, and the limiting structure 5 is arranged between the box side wall of the box body 4 and the battery cell located on the outermost side to fix the battery cell. Namely, the battery cell and the battery cell are clamped through the convex part 31 and the concave part 32, and the battery cell and the side wall of the box are fixed through the limiting structure 5.
It should be noted that the limiting structure 5 may be integrated on a side wall of the box, for example, as shown in fig. 3, the limiting structure 5 is configured to match with a groove of the protruding portion 31 of the battery cell, and the shape of the limiting structure is the same as the structure of the recessed portion 32 of the battery cell, and it can be understood that the protruding portion 31 of the battery cell is directly clamped with the side wall of the box.
The invention further provides an automobile which comprises the battery assembly. For the automobile, the battery assembly is better in fixity and has a better heat dissipation effect, so that the automobile has higher energy efficiency.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. An electrical core, comprising:
the battery cell top plate (1) is arranged into a flat plate structure with a plurality of edges (11);
the battery cell bottom plate (2) and the battery cell top plate (1) have the same shape, and the projection of the battery cell bottom plate (2) along the Z-axis direction is superposed with the battery cell top plate (1); and
cell lateral wall (3), set up along Z axle direction between cell roof (1) and cell bottom plate (2), wherein:
at least one side surface of each side surface of the battery cell side wall (3) is provided with a convex part (31), and at least one other side surface is provided with a concave part (32), so that different battery cells are mutually clamped and connected through the convex part (31) and the concave part (32);
cell roof (1) is equipped with anodal utmost point post (12), negative pole post (13), explosion-proof valve (14) and leads gluey hole (15), wherein lead gluey hole (15) and follow along the Z axle battery roof (1) run through to cell bottom plate (2), it has heat-conducting glue to lead to be annotated in gluey hole (15), heat-conducting glue follows it spills over to lead gluey hole (15).
2. The cell of claim 1, wherein the cell top plate (1) has 2N edges (11), and the length of each edge (11) is the same, while the degree of the included angle formed between any two adjacent edges (11) is the same.
3. The battery cell according to claim 2, wherein in the 2N edges (11), a protrusion (111) is formed in the middle of each of the N edges (11) connected in sequence, the protrusions (111) are formed at the end of the protruding portion (31), and a groove (112) is formed in the middle of each of the other N edges (11) connected in sequence, and the groove (112) is formed at the end of the recessed portion (32).
4. The battery cell of claim 3, wherein the protrusion (111) and the groove (112) are both configured as circular arc structures, and the radius of each circular arc structure is the same.
5. The cell according to claim 4, wherein the cell top plate (1) is provided with six edges (11).
6. A battery assembly, comprising the battery cells of any of claims 1 to 5, wherein two adjacent battery cells are clamped to each other by the protrusions (31) and the recesses (32).
7. The battery assembly of claim 6, further comprising:
the battery box comprises a box body (4), wherein a plurality of battery cells which are clamped with each other are arranged in the box body (4); and
and the limiting structure (5) is arranged between the box side wall of the box body (4) and the battery cell positioned on the outermost side so as to fix the battery cell.
8. An automobile comprising the battery assembly of claim 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068262.1A CN112652846B (en) | 2021-01-19 | 2021-01-19 | Battery cell, battery assembly and automobile |
| PCT/CN2022/072700 WO2022156700A1 (en) | 2021-01-19 | 2022-01-19 | Battery cell, battery assembly, and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068262.1A CN112652846B (en) | 2021-01-19 | 2021-01-19 | Battery cell, battery assembly and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112652846A CN112652846A (en) | 2021-04-13 |
| CN112652846B true CN112652846B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110068262.1A Active CN112652846B (en) | 2021-01-19 | 2021-01-19 | Battery cell, battery assembly and automobile |
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| Country | Link |
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| CN (1) | CN112652846B (en) |
| WO (1) | WO2022156700A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112652846B (en) * | 2021-01-19 | 2022-11-29 | 中国第一汽车股份有限公司 | Battery cell, battery assembly and automobile |
| CN115764066B (en) * | 2022-11-25 | 2023-10-10 | 楚能新能源股份有限公司 | Cylindrical battery liquid cooling module |
| CN116404321B (en) * | 2023-05-31 | 2024-03-26 | 深圳海辰储能控制技术有限公司 | Lower plastic, end cover assembly, energy storage device and electric equipment |
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| CN102035040B (en) * | 2009-09-28 | 2013-05-01 | 清华大学 | Method for manufacturing combined battery and combined battery |
| CN203871383U (en) * | 2014-03-28 | 2014-10-08 | 宁德时代新能源科技有限公司 | Battery pack structure |
| CN105609893A (en) * | 2015-12-24 | 2016-05-25 | 余姚市庆达机械有限公司 | Removable lithium battery pack with good heat dissipation |
| CN205385085U (en) * | 2016-03-14 | 2016-07-13 | 福建省闽华电源股份有限公司 | Winding type lead acid accumulator |
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| KR102308017B1 (en) * | 2017-12-01 | 2021-09-30 | 주식회사 엘지에너지솔루션 | Cylindrical Secondary Battery having Hollow portion filled with Thermal Conductive Resin |
| JP2019133778A (en) * | 2018-01-30 | 2019-08-08 | Tdk株式会社 | Battery pack and battery system including the same |
| CN111816933A (en) * | 2020-01-17 | 2020-10-23 | 深圳市麦格松电气科技有限公司 | Battery controller and rechargeable battery |
| CN211238347U (en) * | 2020-01-17 | 2020-08-11 | 浙江阿尔郎科技有限公司 | Battery cell support, battery case and balance car |
| CN112652846B (en) * | 2021-01-19 | 2022-11-29 | 中国第一汽车股份有限公司 | Battery cell, battery assembly and automobile |
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2021
- 2021-01-19 CN CN202110068262.1A patent/CN112652846B/en active Active
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- 2022-01-19 WO PCT/CN2022/072700 patent/WO2022156700A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206076328U (en) * | 2016-09-26 | 2017-04-05 | 北京新能源汽车股份有限公司 | Battery module and have its vehicle |
| CN106784974A (en) * | 2016-12-31 | 2017-05-31 | 深圳市沃特玛电池有限公司 | Annular electrokinetic cell |
| JP2018116888A (en) * | 2017-01-20 | 2018-07-26 | Tdk株式会社 | Storage battery |
| CN109119556A (en) * | 2018-06-25 | 2019-01-01 | 北京长城华冠汽车科技股份有限公司 | Cylindrical battery core splicing module and the battery modules including the splicing module |
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| Publication number | Publication date |
|---|---|
| CN112652846A (en) | 2021-04-13 |
| WO2022156700A1 (en) | 2022-07-28 |
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