CN114665230A - Battery cell, battery module and vehicle - Google Patents
Battery cell, battery module and vehicle Download PDFInfo
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- CN114665230A CN114665230A CN202210284186.2A CN202210284186A CN114665230A CN 114665230 A CN114665230 A CN 114665230A CN 202210284186 A CN202210284186 A CN 202210284186A CN 114665230 A CN114665230 A CN 114665230A
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- 210000004027 cell Anatomy 0.000 claims description 122
- 210000005056 cell body Anatomy 0.000 claims description 14
- 238000007373 indentation Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000003466 welding Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Images
Classifications
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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
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
-
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a battery core, a battery module and a vehicle. The battery cell comprises: the battery cell comprises a battery cell main body, a battery cell main body and a battery cell, wherein the battery cell main body is provided with a first side surface, a second side surface and an end part which are opposite; the first pole is positioned on the end part and close to the first side surface, at least one ejector pin which extends outwards and is vertical to the first side surface is arranged on the first pole, and a locking groove is arranged on the periphery of each ejector pin; and a second pole located on the end portion and adjacent to the second side surface, at least one clamping hole having an opening facing away from the ejector pin being provided in the second pole, an elastic member being provided in each clamping hole, the clamping hole being configured to receive a corresponding ejector pin of an adjacent cell and the elastic member being configured to mate with the locking groove to lock the ejector pin in the clamping hole. When the battery cell is assembled into the battery module, the poles of the adjacent battery cells can be directly connected and the battery cells are firmly connected. In addition, the battery module can be customized according to the vehicle type by using the battery core, so that the space utilization rate of the battery module is maximized.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a battery core, a battery module and a vehicle.
Background
With the continuous improvement of living standard, the automobile has become one of the indispensable vehicles for people's life today. However, the popularization of the conventional fuel vehicles causes energy crisis and environmental pollution to some extent. People are now facing the third major revolution in traffic energy power systems, namely, replacing petroleum and internal combustion engines with electric power and power batteries, bringing people into a clean energy era. From this, new energy automobile is being promoted gradually and is being suitable for.
The power battery of the new energy automobile can be generally divided into a lithium ion battery, a nickel-hydrogen battery, a fuel battery, a lead-acid battery and a super capacitor. The lithium battery has the advantages of high capacity, long service life, environmental protection, good safety performance and the like, so the lithium battery gradually replaces other new energy batteries. However, the traditional lithium battery needs to complete the assembly of the battery module by means of laser welding equipment, which not only consumes a large amount of energy, but also increases the equipment investment for assembling the battery module, and does not meet the requirements of energy conservation and emission reduction of carbon neutralization and carbon peaking currently proposed by our country. In addition, the battery module adopts the connection mode of welding, so that the later-period disassembly and replacement of the battery core are not convenient.
There are designs in the prior art that can connect cells without using a welding process. Chinese utility model patent application CN213546527U discloses a sunken utmost point post, connection piece and battery module. The utility model discloses a through set up the jack on the top of electric core utmost point post, when carrying out a plurality of electric cores and connecting, only need with the link of connection piece insert the jack on the utmost point post in the chucking can, when needs separation connection piece and electric core utmost point post, only need hard extract the link from the jack can, compare with the welded connection mode, connect easy operation convenience, the later stage of being convenient for is to electric core maintenance replacement or recovery and recycle. However, this kind of design needs with the help of the connection piece, can't make the utmost point post of adjacent electric core directly link to each other, also can not make the space utilization of battery module reach the maximize.
Therefore, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the technical problem in the prior art that the space utilization of a battery module cannot be maximized during the assembly of a battery cell, the invention provides a battery cell. The battery cell comprises a battery cell main body, wherein the battery cell main body is provided with a first side surface, a second side surface and an end part which are opposite; the first pole is positioned on the end part and close to the first side surface, at least one ejector pin which extends outwards and is vertical to the first side surface is arranged on the first pole, and a locking groove is arranged on the periphery of each ejector pin; and a second pole located on the end portion and adjacent to the second side surface, at least one locking hole having an opening facing away from the ejector pin being provided in the second pole, an elastic member being provided in each locking hole, the locking hole being configured to receive a corresponding ejector pin of an adjacent cell and the elastic member being configured to be matched with the locking groove to lock the ejector pin in the locking hole.
In the battery cell, the first pole column and the second pole column are positioned at the same end part of the battery cell main body, the first pole column is provided with at least one ejector pin which is perpendicular to the first side surface of the battery cell and extends outwards, and the periphery of each ejector pin is provided with a locking groove; at least one clamping hole with an opening back to the ejector pin is arranged in the second pole column, an elastic piece is arranged in each clamping hole, the clamping holes are configured to receive the ejector pins of adjacent battery cells, and the elastic pieces can be matched with the locking grooves to enable the ejector pins to be locked in the clamping holes. Through set up the thimble on the first utmost point post of electric core and set up the card hole that can form the interlocking with the thimble on the second utmost point post for utmost point post between electric core and the adjacent electric core can the lug connection, and the design of elastic component and locked groove can be with the thimble locking in calorie hole, and then guarantee the firm connection between the electric core. Through the direct connection of the polar columns, the space utilization rate of the battery cell assembly can be further guaranteed to be maximized.
In a preferred embodiment of the battery cell, the first terminal post has a protruding portion protruding outward perpendicularly from the first side surface, and the second terminal post is recessed from the second side surface to form a notch between the second terminal post and the second side surface, the notch being configured to at least partially receive the protruding portion of the first terminal post of an adjacent battery cell. Through foretell setting, the breach of electric core can with the bulge cooperation of adjacent electric core, can improve the space utilization of electric core equipment, and then improved the specific energy of battery module.
In a preferred embodiment of the battery cell, the notch is configured to completely receive the protrusion, so that the second side surface of the battery cell can contact the first side surface of an adjacent battery cell. Through foretell setting, the breach of electric core can match completely in the shape with the bulge of adjacent electric core for the space utilization of electric core equipment obtains further improvement, and then has further improved the specific energy of battery module.
In a preferred technical solution of the battery cell, the protrusion and the notch of the first terminal post are respectively rectangular or square. The cuboid or the square is a regular structure with wide application, and the mutually matched convex part and the notch are designed into the cuboid or the square, thereby being beneficial to the combination and the splicing of the battery cell and being easy for the production and the manufacture of the battery cell.
In a preferred embodiment of the foregoing battery cell, the battery cell main body is a rectangular parallelepiped, the thimble extends perpendicularly outward from the first side surface, and the opening of the card hole is located on the second side surface. The cell body adopting such a configuration has a regular rectangular parallelepiped shape, and therefore, it is also made easier to manufacture.
In a preferred technical scheme of the battery cell, a cover plate is arranged inside the battery cell main body and close to the end part, and the elastic part and the cover plate are fixedly connected. Through foretell setting, can make the elastic component fix inside electric core main part, be favorable to the thimble of electric core utmost point post to pass through the locked groove structure and lock with the elastic component, and then guarantee the firm of electric core equipment.
In a preferred technical solution of the above battery core, along a length direction of the thimble, a length of the lock groove is greater than a length of the elastic member. Through foretell setting, during the elastic component extended the locked groove more easily, can guarantee that the thimble can block into in the card hole and do not influence the mutual locking of the two, when electric core needs to be dismantled, also easily thimble and card hole separation.
In a preferred embodiment of the battery cell, a handle is disposed on the second pole, the handle has a connecting portion and a handle portion, the connecting portion and the elastic member form a fixed connection and extend to the end portion, and the handle portion is located outside the end portion and configured to be pulled to compress the elastic member. Through foretell setting, when needs are dismantled continuous electric core, can make the elastic component compression from the outside pulling handle of electric core to make the thimble break away from the card hole, and then realize the harmless dismantlement of electric core.
In a preferred technical solution of the above battery cell, the first terminal post and the second terminal post are integrated with the battery cell main body. Through the arrangement, the space utilization rate of the battery module can be maximized, so that the specific energy is improved to the maximum extent, and the final purpose of increasing the cruising ability is achieved.
In a preferred technical scheme of the battery core, the thimble is made of any one of copper, aluminum, iron and silver, and the card hole is made of any one of copper, aluminum, iron and silver. Through foretell setting, the thimble that links to each other adopts the metal material that electric conductive property is good with the card hole can realize the electricity between electric core and the electric core and be connected to realize the basic function of battery module.
In a preferred technical solution of the battery cell, the positive and negative electrode sheets of the battery cell main body are configured in a winding type or a laminated type. Through foretell setting, the electrode slice of electric core main part can adopt multiple form, and the design is nimble, and the flexibility is strong.
In order to solve the above problems in the prior art, that is, to solve the technical problem that the space utilization rate of a battery module cannot be maximized during the assembly of a battery cell in the prior art, the invention provides a battery module. The battery module comprises a plurality of battery cores according to any one of the above items, wherein the thimble of each battery core is inserted into the corresponding clamping hole of the adjacent battery core and locked in the clamping hole. Through foretell setting, can directly link to each other through utmost point post between electric core and the electric core in the battery module to through thimble and the firm that electric core is connected of card hole interlocking can be guaranteed.
In a preferred technical solution of the above battery module, each of the first poles of the battery cells includes a protruding portion protruding outward perpendicularly from the first side surface of the battery cell, and each of the second poles of the battery cells is recessed from the second side surface of the battery cell to form a notch between the second pole post and the second side surface, where the notch is configured to accommodate the protruding portion of the first pole of the adjacent battery cell. Through foretell setting, can guarantee that the space utilization of battery module reaches the maximize, and then be favorable to improving the specific energy, reach the final purpose that increases duration.
In a preferred technical solution of the above battery module, all the battery cells are electrically connected in series or in parallel. Through foretell setting, can form the electricity between each electric core of battery module and connect, and then realize the basic function of battery module.
In order to solve the problems in the prior art, namely to solve the technical problem that the space utilization rate of a battery module cannot be guaranteed to be maximized during the assembly of a battery core in the prior art, the invention also provides a vehicle. The vehicle includes the battery module according to any one of the above. Through foretell setting, the battery module of this vehicle need not assemble through laser welding, when reducing whole car manufacturing cost, can realize battery electric core's harmless dismantlement and change. The battery module can also be customized according to the motorcycle type, makes the space utilization of battery module realize the maximize, and then improves the specific energy of battery, reaches the final purpose that increases duration.
a cell body having opposing first and second sides and an end;
the first pole is positioned on the end part and close to the first side surface, at least one ejector pin which extends outwards and is vertical to the first side surface is arranged on the first pole, and a locking groove is arranged on the periphery of each ejector pin; and
a second pole located on the end portion and adjacent to the second side surface, at least one locking hole having an opening facing away from the ejector pin being provided in the second pole, an elastic member being provided in each locking hole, the locking hole being configured to receive a corresponding ejector pin of an adjacent cell and the elastic member being configured to mate with the locking groove to lock the ejector pin in the locking hole.
The battery cell of claim 1, wherein the first terminal post has a projection projecting perpendicularly outward from the first side surface, and the second terminal post is recessed from the second side surface to form a notch between the second terminal post and the second side surface, the notch configured to at least partially receive the projection of the first terminal post of an adjacent battery cell.
The battery cell of claim 2, wherein the indentation is configured to fully receive the protrusion such that the second side of the battery cell may contact the first side of an adjacent battery cell.
Scheme 4. the battery cell according to scheme 2, wherein the protrusion and the notch of the first terminal post are respectively rectangular or square.
The battery cell according to claim 1, wherein the battery cell main body is rectangular, the thimble perpendicularly extends outward from the first side surface, and the opening of the card hole is located on the second side surface.
The battery cell according to claim 1, wherein a cover plate is disposed inside the battery cell main body and near the end portion, and the elastic member and the cover plate are fixedly connected.
The battery cell according to claim 1, wherein the length of the locking groove is greater than the length of the elastic member along the length direction of the thimble.
The battery cell of claim 8, wherein a handle is disposed on the second pole, the handle has a connecting portion and a handle portion, the connecting portion forms a fixed connection with the elastic member and extends to the end portion, the handle portion is located outside the end portion and configured to be compressed by pulling the handle portion.
Scheme 9. the battery cell of scheme 1, wherein the first terminal post and the second terminal post are integrated with the battery cell body.
The battery core according to the claim 1, characterized in that the material of the thimble is any one of copper, aluminum, iron, and silver, and the material of the card hole is any one of copper, aluminum, iron, and silver.
The battery cell according to claim 1, wherein the positive and negative electrode sheets of the battery cell main body are configured in a winding type or a laminated type.
The battery module according to claim 12, wherein all the battery cells are electrically connected in series or in parallel.
An aspect 15 is a vehicle including the battery module according to any one of aspects 12 to 14.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an embodiment of a cell of the present invention;
fig. 2 is a schematic structural diagram of another embodiment of a cell of the present invention;
fig. 3 is a schematic structural view of a battery module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the cooperation of the ejector pin and the clamping hole in the battery core in the embodiment of the battery module of the invention.
List of reference numerals:
1. a battery module; 10. an electric core; 11. a cell main body; 111. a first side surface; 112. a second side surface; 113. an end portion; 114. a cover plate; 115. a notch; 12. a first pole column; 121. a thimble; 211. locking the groove; 122. a projection; 13. a second pole; 131. a clamping hole; 311. an elastic member; 132. a handle; 321. a connecting portion; 322. a handle portion.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element 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 for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to solve the technical problem that the space utilization rate of a battery module cannot be maximized during the assembly of a battery cell in the prior art, the invention provides a battery cell 10. This electricity core 10 includes: a cell body 11, the cell body 11 having opposing first and second sides 111, 112 and an end 113; the first pole post 12 is positioned on the end portion 113 and close to the first side surface 111, at least one thimble 121 extending outward and perpendicular to the first side surface 111 is arranged on the first pole post 12, and a locking groove 211 is arranged on the periphery of each thimble 121; and a second pole piece 13, the second pole piece 13 being located on the end portion 113 and close to the second side surface 112, at least one card hole 131 opening opposite to the thimble 121 being provided in the second pole piece 13, an elastic member 311 being provided in each card hole 131, the card hole 131 being configured to receive the corresponding thimble 121 of the adjacent battery cell 10 and the elastic member 311 being configured to match with the locking groove 211 to lock the thimble 121 in the card hole 131.
Fig. 1 is a schematic structural diagram of an embodiment of a battery cell of the present invention. As shown in fig. 1, the battery cell 10 includes a cell body 11, a first pole column 12, and a second pole column 13. In one or more embodiments, the positive and negative electrode sheets inside the cell body 11 are wound. Alternatively, the positive and negative electrode plates inside the cell main body 11 may also adopt a laminated structure or other special-shaped structures.
As shown in fig. 1, the cell main body 11 includes a first side surface 111 and a second side surface 112 that are opposite to each other, and two end portions that are opposite to each other. In fig. 1, an end portion located at an upper portion of the battery cell body 11 in the drawing is denoted by 113. Alternatively, the end portion 113 may be located at the lower portion of the cell main body 11 based on the orientation shown in fig. 1. As shown in fig. 1, the first side surface 111 is located on the left of the cell main body 11, and the second side surface 112 is located on the right of the cell main body 11. The first pole post 12 and the second pole post 13 are integrated with the cell main body 11, and are located on an end portion 113 of an upper portion of the cell main body 11. In one or more embodiments, the first pole post 12 includes a projection 122, the projection 122 projecting perpendicularly outward from the first side 111. The second pole post 13 is proximate to the second side 112 and there is a gap 115 between the second pole post 13 and the second side 112. In one or more embodiments, the protrusion 122 and the notch 115 are rectangular parallels of equal size and shape. In alternative embodiments, the protrusion 122 and the notch 115 may also be square, conical frustum, hemispherical, or any other shape, as long as the process is ensured, and the notch 115 may at least partially or completely receive the protrusion 122 of the adjacent battery cell, so that the adjacent battery cells 10 may be directly connected to each other through the terminal to form an electrical connection.
In one or more embodiments, as shown in fig. 1, two ejector pins 121 are disposed on the first pole post 12. The thimble 121 is an elongated copper needle having a cylindrical shape, and two thimbles 121 are arranged side by side in the horizontal direction and extend outward from the first pole 12 perpendicular to the first side surface 111. Alternatively, the two ejector pins 121 may be arranged side by side in the vertical direction. A lock groove 211 is provided on the outer periphery of each needle 121, and the lock groove 211 is located on the illustrated upper peripheral wall of the needle 121 and extends on the outer side (i.e., on the left side relative to the illustration) near the needle 121 along the longitudinal direction of the needle 121. In an alternative embodiment, the number of the thimble 121 may also be one, or more than two, as long as it is ensured that the first pole column 12 can be electrically connected with the second pole column 13 of the adjacent battery cell 10 through the thimble 121. In alternative embodiments, the thimble 121 may also be an elongated rectangular parallelepiped or an irregularly shaped needle, as long as it can ensure that the electrical connection between the battery cells 10 can be formed. In alternative embodiments, the material of the thimble 121 may be aluminum, iron, silver, or any other material with excellent electrical conductivity.
In one or more embodiments, as shown in fig. 1, two card holes 131 are provided on the second pole post 13. The card hole 131 is made of a copper material. The positions of the two clamping holes 131 correspond to the positions of the two thimbles 121 on the first pole post 12, respectively, and the openings of the clamping holes 131 are opposite to the thimbles 121. In an alternative embodiment, the number of the card holes 131 may also be one, or more than two, as long as it is ensured that the thimble 121 on the first terminal post 12 of the adjacent battery cells 10 can be matched with the corresponding card hole 131, and when the thimble 121 is inserted into the card hole 131, the battery cells 10 can be electrically connected with each other. In alternative embodiments, the material of the card hole 131 may also be aluminum, iron, silver, or any other material with good electrical conductivity.
Fig. 2 is a schematic structural diagram of another embodiment of the battery cell of the present invention. As shown in fig. 2, in an alternative embodiment, the cell main body 11 may also be a regular rectangular parallelepiped. Alternatively, the cell main body 11 may be square. The first pole post 12 is located on the end portion 113 and close to the first side surface 111, i.e., the first pole post 12 is located at the upper left corner of the cell body 11 in the figure. Two ejector pins 121 are provided on the first pole post 12. Two ejector pins 121 extend perpendicularly outwardly from the first side 111. The second pole 13 is also located on the end 113 and near the second side 112, i.e., the second pole 13 is located in the upper right-hand corner of the cell body 11 as shown. Two card holes 131 are provided on the second pole 13, and openings of the two card holes 131 are located on the second side surface 112.
Fig. 3 is a schematic structural view of a battery module according to an embodiment of the present invention. As shown in fig. 3, in one or more embodiments, the battery module 1 includes 5 battery cells 10. The 5 battery cells 10 are arranged side by side and are tightly attached to each other. Alternatively, the number of the battery cells 10 may also be greater than 1 and less than 5, or greater than 5, and may be configured according to actual requirements. The notch 115 of each battery cell 10 completely receives the protrusion 122 of the adjacent battery cell 10, so that the second pole column 13 directly contacts with the first pole column 12 of the adjacent battery cell 10, there is no gap between the second pole column 13 and the first pole column 12 of the adjacent battery cell 10, and the second side surface 112 of the battery cell 10 is tightly attached to the first side surface 111 of the adjacent battery cell 10. The battery cores 10 are connected in series through the poles. In an alternative embodiment, the notch 115 of each battery cell 10 may only partially receive the protrusion 122 of the adjacent battery cell 10, so as to form a certain gap between the battery cell 10 and the adjacent battery cell 10, as long as the electrical connection between the battery cells 10 is ensured. Alternatively, a parallel connection may be formed between the battery cells 10.
Fig. 4 is a schematic diagram of the cooperation of the ejector pin and the clamping hole in the battery core in the embodiment of the battery module of the invention. As shown in fig. 4, a cover plate 114 is provided inside the cell body 11 at a position close to the end 113. The cover plate 114 and a tab (not shown) inside the battery cell 10 are fixed together by ultrasonic welding or laser welding. In one or more embodiments, the cover plate 114 is located above the illustration of the card hole 131, and an elastic member 311 is provided at a corresponding position of the card hole 131. In one or more embodiments, the resilient member 311 is a spring plate. Alternatively, the elastic member 311 may be a spring wire or other suitable form of elastic member. The elastic member 311 is coupled with the cap plate 114 through a laser welding process. Alternatively, the elastic member 311 may be fixed to the cover plate 114 by ultrasonic welding, riveting, or the like. When needle 121 is inserted into card hole 131, elastic piece 311 extends into lock groove 211 of needle 121 and is restrained by end walls at the left and right ends of lock groove 211 in the length direction of needle 121, and is thus locked in lock groove 211 in the length direction of the needle. In one or more embodiments, the length of locking slot 211 along the length of needle 121 is slightly greater than the length of elastic element 311, thereby ensuring that elastic element 311 can be easily extended or inserted into locking slot 211.
As shown in FIG. 4, in one or more embodiments, a handle 132 is attached to each spring 311. The handle 132 is disposed on the second pole and includes a connecting portion 321 and a handle portion 322. The connecting portion 321 has one end connected to the elastic member 311 and the other end extending upward to the end portion 113 of the cell main body 11, and is connected to the handle portion 322. The handle portion 322 is disposed outside (i.e., above in the drawing) the end portion 113 of the cell main body 11. When two adjacent electric cores 10 need to be separated, the handle portion 322 arranged on the outer side of the end portion 113 only needs to be pulled upwards to drive the connecting portion 321 to move upwards, so that the elastic piece 311 is compressed and separated from the locking groove 211, and then the thimble 121 can be pulled out from the clamping hole 131, thereby realizing lossless disassembly of the battery module 1.
The present invention also relates to a vehicle (not shown in the drawings) having the above battery module 1. In one or more embodiments, the vehicle of the present invention is a pure electric vehicle. Alternatively, the vehicle may be a hybrid vehicle, or other suitable vehicle. This vehicle is according to self motorcycle type customization battery module 1 to follow-up can carry out harmless dismantlement and the change to battery module 1 according to actual demand. By using the battery module 1, the space utilization rate of the battery is improved to the greatest extent, the specific energy of the battery is further improved, and the excellent cruising ability of the vehicle is ensured.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A battery cell, comprising:
a cell body having opposing first and second sides and an end;
the first pole is positioned on the end part and close to the first side surface, at least one ejector pin which extends outwards and is vertical to the first side surface is arranged on the first pole, and a locking groove is arranged on the periphery of each ejector pin; and
a second pole located on the end portion and adjacent to the second side surface, at least one locking hole having an opening facing away from the ejector pin being provided in the second pole, an elastic member being provided in each locking hole, the locking hole being configured to receive a corresponding ejector pin of an adjacent cell and the elastic member being configured to mate with the locking groove to lock the ejector pin in the locking hole.
2. The cell of claim 1, wherein the first pole post has a projection projecting perpendicularly outward from the first side, and the second pole post is recessed from the second side to form a notch between the second pole post and the second side, the notch configured to at least partially receive the projection of the first pole post of an adjacent cell.
3. The cell of claim 2, wherein the indentation is configured to fully receive the protrusion such that the second side of the cell may contact the first side of an adjacent cell.
4. The electrical core of claim 2, wherein the protrusion and the notch of the first terminal post are each rectangular parallelepiped or square.
5. The cell of claim 1, wherein the cell body is rectangular parallelepiped, the thimble extends perpendicularly outward from the first side, and the opening of the card hole is located on the second side.
6. The cell of claim 1, wherein a cover plate is disposed inside the cell body adjacent to the end portion, and the elastic member forms a fixed connection with the cover plate.
7. A battery module, characterized in that the battery module comprises a plurality of battery cells according to any one of claims 1 to 6, and the ejector pin of each battery cell is inserted into the corresponding card hole of the adjacent battery cell and locked in the card hole.
8. The battery module of claim 7, wherein the first terminal post of each cell comprises a projection that projects perpendicularly outward from the first side of the cell, and wherein the second terminal post of each cell is recessed from the second side of the cell to form a gap between the second terminal post and the second side, the gap configured to receive the projection of the first terminal post of an adjacent cell.
9. The battery module according to claim 7, wherein all the battery cells are electrically connected in series or in parallel.
10. A vehicle characterized by comprising the battery module according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284186.2A CN114665230A (en) | 2022-03-22 | 2022-03-22 | Battery cell, battery module and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284186.2A CN114665230A (en) | 2022-03-22 | 2022-03-22 | Battery cell, battery module and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN114665230A true CN114665230A (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210284186.2A Pending CN114665230A (en) | 2022-03-22 | 2022-03-22 | Battery cell, battery module and vehicle |
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| CN111883850A (en) * | 2020-07-28 | 2020-11-03 | 合肥国轩高科动力能源有限公司 | Self-stacking lithium ion battery and battery module |
| CN114024082A (en) * | 2021-11-04 | 2022-02-08 | 欣旺达电动汽车电池有限公司 | Battery, battery module and battery pack |
| CN215989135U (en) * | 2021-09-16 | 2022-03-08 | 湖北亿纬动力有限公司 | Battery module and battery pack |
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|---|---|---|---|---|
| CN203967162U (en) * | 2014-07-07 | 2014-11-26 | 刘传兵 | A kind of battery component and intelligent wearing equipment |
| CN111883850A (en) * | 2020-07-28 | 2020-11-03 | 合肥国轩高科动力能源有限公司 | Self-stacking lithium ion battery and battery module |
| CN215989135U (en) * | 2021-09-16 | 2022-03-08 | 湖北亿纬动力有限公司 | Battery module and battery pack |
| CN114024082A (en) * | 2021-11-04 | 2022-02-08 | 欣旺达电动汽车电池有限公司 | Battery, battery module and battery pack |
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