CN114725628B - Battery assembly and battery manufacturing method - Google Patents
Battery assembly and battery manufacturing method Download PDFInfo
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- CN114725628B CN114725628B CN202210427204.8A CN202210427204A CN114725628B CN 114725628 B CN114725628 B CN 114725628B CN 202210427204 A CN202210427204 A CN 202210427204A CN 114725628 B CN114725628 B CN 114725628B
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- shell
- inner groove
- piece
- circumferential inner
- battery
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
-
- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention belongs to the technical field of cylindrical batteries, and discloses a battery assembly and a battery manufacturing method. The battery assembly comprises a shell, a switching piece and a cover plate. The shell is hollow and one end of the shell is open, the cylindrical battery cell is arranged in the shell, and the shell is recessed inwards in the circumferential direction to form a circumferential inner groove; the switching piece is arranged on the cylindrical battery cell, and one axial end of the switching piece is pressed between the circumferential inner groove and the cylindrical battery cell and is abutted with the circumferential inner groove and the cylindrical battery cell; the cover plate is abutted with the other axial end of the switching piece, and the opening end of the shell bends inwards to position the cover plate. The connecting piece and the shell are fixedly connected in a mechanically matched connection mode, so that the processing difficulty and the cost are low, and the mass production and the manufacturing are convenient. The battery manufacturing method is used for manufacturing the battery assembly, the connection between the switching sheet and the shell can be realized without intervention of laser welding, the thermal damage of each part is avoided, the production difficulty is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of cylindrical batteries, in particular to a battery assembly and a battery manufacturing method.
Background
At present, a large cylindrical lithium ion battery mainly adopts a full-tab design scheme, and a cylindrical battery switching sheet and a battery shell are connected in a laser welding mode, so that the purpose of electrification of the shell is achieved. But laser welding's connected mode processing degree of difficulty is high, the precision is controlled highly, has the risk that the welding is worn and can't detect, and laser welding can throw the shell cladding of cylinder battery case for the casing produces the scheduling problem that rusts easily.
Disclosure of Invention
The invention aims to provide a battery assembly and a battery manufacturing method, which can realize connection and electrification of a switching piece, a shell and a cover plate in a mechanical matching mode.
To achieve the purpose, the invention adopts the following technical scheme:
In one aspect, there is provided a battery assembly comprising:
the cylindrical battery cell is arranged in the shell, and the shell is concave inwards in the circumferential direction to form a circumferential inner groove;
the switching piece is arranged on the cylindrical battery cell, and one axial end of the switching piece is pressed between the circumferential inner groove and the cylindrical battery cell and is abutted against the circumferential inner groove and the cylindrical battery cell;
the cover plate is abutted with the other axial end of the switching piece, and the opening end of the shell is inwards bent to position the cover plate.
Optionally, the adaptor includes:
the bottom plate is round and is connected with the cylindrical battery cell;
The bending side plate is connected with the bottom plate in the circumferential direction, is arranged at an included angle with the bottom plate and is abutted against the side wall of the circumferential inner groove;
The bending piece is vertically arranged, one axial end of the bending piece is circumferentially connected with the bending side plate, and the other axial end of the bending piece can be bent and abutted to the cover plate.
Optionally, the rotary joint further comprises a sealing piece, wherein the sealing piece is used for sleeving and sealing the periphery of the cover plate and the periphery of the other axial end of the rotary joint piece, and the opening end of the shell is bent inwards and abutted with the sealing piece.
Optionally, the sealing member is the sealing rubber ring, the cross-section of sealing rubber ring is L type, the outside of sealing rubber ring's L type with circumference inside groove butt, the inboard of sealing rubber ring's L type can the kink parcel apron periphery.
Optionally, one end of the cylindrical battery cell, which is contacted with the adapter piece, is an anode or cathode output end.
Optionally, the material of the shell is aluminum or steel.
In another aspect, a battery manufacturing method is provided for manufacturing the battery assembly described above, including the steps of:
assembling, namely assembling the cylindrical battery cell and the adapter piece in the shell;
rolling the outer periphery of the shell to form a circumferential inner groove, so that one axial end of the adapter piece is pressed between the circumferential inner groove and the cylindrical battery cell;
Bending, namely bending the other axial end of the switching piece, and assembling the cover plate on the other axial end of the switching piece;
And sealing, namely tightly sealing the opening end of the shell.
Optionally, in the bending step, a sealing element is assembled, the sealing element is abutted against the side wall of the circumferential inner groove, and the other axial end of the adapter piece is bent towards the sealing element.
Optionally, in the sealing step, the open end of the housing is folded inwards to be in press-fit sealing with the sealing member.
Optionally, in the assembling step, the adapter piece is connected with a tab part of the positive electrode or the negative electrode output end of the cylindrical battery cell.
The invention has the beneficial effects that:
The battery module has the advantages that the connection mode of mechanical fit between the switching sheet and the shell is used for realizing fixed connection, compared with the traditional welding connection mode, the mechanical fit connection mode has less damage to parts, low processing difficulty and cost and is convenient for mass production and manufacture. The switching piece of battery pack respectively with casing and apron direct contact, realized that casing and apron can electrified effect simultaneously.
The battery manufacturing method is used for manufacturing the battery assembly, the connection between the switching sheet and the shell can be realized without intervention of laser welding, the thermal damage of each part is avoided, the production difficulty is reduced, and the production efficiency is improved.
Drawings
Fig. 1 is a structural sectional view of a battery pack according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a construction of a switch plate according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method of manufacturing a battery according to an embodiment of the invention;
FIG. 4 is a second schematic diagram of a battery manufacturing method according to an embodiment of the invention;
Fig. 5 is a third manufacturing schematic diagram using the battery manufacturing method according to the embodiment of the present invention;
fig. 6 is a manufacturing schematic diagram of a battery manufacturing method using an embodiment of the present invention;
fig. 7 is a schematic view of a battery manufacturing method according to an embodiment of the present invention.
In the figure:
1. a housing; 11. a circumferential inner groove; 2. a transfer sheet; 21. a bottom plate; 211. a central bore; 22. bending the side plates; 23. bending the sheet; 221. a boss structure; 3. a cover plate; 4. a seal; 5. a cylindrical cell.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a battery pack including a case 1, a transfer sheet 2, and a cap plate 3. The inside of the shell 1 is hollow, one end of the shell is open, the cylindrical battery cell 5 is arranged in the shell 1, and the shell 1 is concaved inwards in the circumferential direction to form a circumferential inner groove 11; the switching piece 2 is arranged on the cylindrical battery cell 5, and one axial end of the switching piece 2 is pressed between the circumferential inner groove 11 and the cylindrical battery cell 5 and is abutted against the circumferential inner groove 11 and the cylindrical battery cell 5; the cover plate 3 is abutted with the other axial end of the switching piece 2, and the opening end of the shell 1 bends inwards to position the cover plate 3.
In this embodiment, as shown in fig. 1, the casing 1 is hollow in a cylindrical shape, one end of the casing is open, the cylindrical battery cell 5 is assembled inside the casing 1, the outer peripheral surface of the casing 1 is recessed into the circumferential inner groove 11 by rolling mechanical rolling, one axial end of the adapter piece 2 is pressed between the circumferential inner groove 11 and the cylindrical battery cell 5, the other axial end of the adapter piece 2 is abutted to the cover plate 3, and the open end of the casing 1 is bent inwards to press the positioning cover plate 3. The switching piece 2 is fixedly connected with the shell 1 and the cover plate 3 in a mechanically matched connection mode to form electric conduction, so that the processing difficulty and the cost are low, the mass production and the manufacturing are convenient, and the effect that the shell 1 and the cover plate 3 can be charged simultaneously is realized.
Optionally, the adapter piece 2 comprises a bottom plate 21, a bending side plate 22 and a bending piece 23, and the bottom plate 21 is circular and is connected with the cylindrical battery cell 5; the bending side plate 22 is connected with the bottom plate 21 in the circumferential direction, and the bending side plate 22 is arranged at an included angle with the bottom plate 21 and is abutted against the side wall of the circumferential inner groove 11; the bending piece 23 is vertically arranged, one axial end of the bending piece 23 is circumferentially connected with the bending side plate 22, and the other axial end of the bending piece 23 can be bent to be abutted with the cover plate 3.
The concrete structure of the switching piece 2 in this embodiment is shown in fig. 2, and referring to fig. 1, the bottom plate 21 is circular and connected with the lug part of the cylindrical battery core 5, the bending side plate 22 is connected with the bottom plate 21 circumferentially in a conical surface, and under the extrusion action of the circumferential inner groove 11, the bending side plate 22 is folded in half towards the bottom plate 21 and is in tight abutting contact with the circumferential inner groove 11; the bending piece 23 is a cylindrical surface, one axial end of the bending piece is circumferentially connected with the bending side plate 22, the other axial end of the bending piece 23 is outwards bent to form a connecting table top, and the cover plate 3 is placed on the connecting table top and is in abutting contact with the connecting table top. The current drawn from the tab portion of the cylindrical cell 5 can flow through the cover plate 3 and the housing 1, so that the cover plate 3 and the housing 1 can be charged simultaneously.
Alternatively, the outer surface of the bending side plate 22 is provided with a boss structure 221, and the bending side plate 22 is folded in half towards the bottom plate 21 under the extrusion action of the circumferential inner groove 11, and the circumferential inner groove 11 is in tight abutting contact with the boss structure 221. In this embodiment, as shown in fig. 2, the boss structure 221 is an arc-shaped protrusion circumferentially disposed around the bending side plate 22, the boss structure 221 is provided with three groups, the three groups of boss structures 221 are uniformly disposed on the bending side plate 22 at intervals, circumferentially disposed around the bending side plate 22, and under the extrusion action of the circumferential inner groove 11, the boss structures 221 on the bending side plate 22 tightly contact with the circumferential inner groove 11, so that even under the vibration condition, the tight connection with the housing 1 can be realized, and the contact stability is ensured. The cross-sectional shape of the bump structure 221 in fig. 1 of the present embodiment is semicircular, and in addition, the cross-sectional shape may be rectangular or other regular or irregular cross-sectional shapes, which is not limited to the drawings of the present embodiment
Optionally, as shown in fig. 2, a center hole 211 is formed at the center of the bottom plate 21. It can be understood that the cylindrical battery cell 5 is formed by winding, a reel is often wound in the cylindrical battery cell 5, and after the cylindrical battery cell 5 is assembled, the reel is drawn out. In this embodiment, a central hole 211 is formed at the center of the bottom plate 21, and the central hole 211 facilitates the extraction of the reel in the cylindrical battery cell 5. In addition, the central hole 211 also plays a role in reducing weight, reduces the use of manufacturing materials, and reduces production and manufacturing costs.
Optionally, the battery assembly further comprises a sealing member 4, the sealing member 4 is sleeved and sealed on the outer periphery of the cover plate 3 and the outer periphery of the other axial end of the switching piece 2, and the opening end of the shell 1 is bent inwards and abutted against the sealing member 4. As shown in fig. 1, in this embodiment, the sealing member 4 is fitted and sealed around the outer periphery of the cover plate 3 and the outer periphery of the other axial end of the bending piece 23, and the opening end of the housing 1 is bent inward and abuts against the sealing member 4. In this embodiment, in order to ensure the connection tightness between the cover plate 3 and the outer periphery of the bending piece 23, the sealing member 4 is fitted around the outer periphery of the cover plate 3 and the outer periphery of the bending piece 23 connected to the cover plate 3, so that the circumferential gap is filled, and the tightness is improved.
Optionally, the sealing element 4 is a sealing rubber ring, the cross section of the sealing rubber ring is L-shaped, the outer side of the L-shaped sealing rubber ring is abutted against the circumferential inner groove 11, and the inner side of the L-shaped sealing rubber ring can wrap the periphery of the cover plate 3 through a bending part. Referring to fig. 5, as shown in fig. 1, the sealing member 4 is made of elastic insulating material, the cross section of the sealing member is L-shaped, the outer side of the L-shaped sealing member is abutted against the circumferential inner groove 11, the bending piece 23 is bent towards the outer side of the L-shaped sealing member and abutted against the outer side of the L-shaped sealing member to form a connecting table, the cover plate 3 is mounted on the connecting table, the inner side of the L-shaped sealing member is abutted against the inner wall of the shell 1, and is attached to the cover plate 3 under the bending action of the opening end of the shell 1, as shown in fig. 2, the sealing member is pressed into 匚, and the peripheries of the cover plate 3 and the bending piece 23 are wrapped.
Alternatively, the end of the cylindrical battery cell 5 contacting the switching piece 2 is a positive or negative output end. In this embodiment, the end of the cylindrical battery cell 5 contacting the battery switching piece 2 may be the positive output end or the negative output end. When one end of the cylindrical cell 5, which is in contact with the battery switching piece 2, is the positive electrode output end, the battery switching piece 2 is used as the positive electrode switching piece, the material of the shell 1 is preferably aluminum, and the aluminum shell is easy to process, so that the weight energy density can be effectively improved. When one end of the cylindrical cell 5, which is in contact with the battery switching piece 2, is a negative electrode output end, the battery switching piece 2 is used as a negative electrode switching piece, the material of the shell 1 is preferably steel, the whole steel shell is provided with negative electrode electricity, and no iron precipitation phenomenon occurs.
The embodiment also provides a battery manufacturing method for manufacturing the battery assembly, which comprises the following steps:
An assembling step of assembling the cylindrical battery cell 5 and the switching piece 2 in the housing 1;
in this step, as shown in fig. 3, the switching piece 2 is connected to the tab portion of the cylindrical battery cell 5, and is assembled and mounted inside the case 1, and the switching piece 2 is connected to the tab portion of the positive or negative output end of the cylindrical battery cell 5.
A rolling groove processing step, namely forming a circumferential inner groove 11 on the periphery of the rolling shell 1 so that one axial end of the switching piece 2 is pressed between the circumferential inner groove 11 and the cylindrical battery cell 5;
In this step, the outer periphery of the housing 1 is rolled using a rolling machine, a circumferential inner groove 11 is formed in the outer periphery of the housing 1, the folded side plate 22 is folded in half toward the bottom plate 21, and the circumferential inner groove 11 is brought into close contact with the boss structure 221 on the folded side plate 22.
Bending, namely bending the other axial end of the adapter piece 2, and assembling the cover plate 3 on the other axial end of the adapter piece 2;
in this step, the assembly of the seal 4 is also included, the seal 4 is abutted against the side wall of the circumferential inner groove 11, and the other axial end of the adapter piece 2 is bent toward the seal 4. As shown in fig. 6 and 7, after the circumferential inner groove 11 is roll-formed, the seal member 4 is assembled in the housing 1, the seal member 4 abuts against a side of the circumferential inner groove 11 away from the boss structure 221, and then the other axial end of the adapter piece 2 is bent so that the other axial end of the adapter piece 2 forms a connection land, and the cover plate 3 is assembled on the connection land at the other axial end of the adapter piece 2.
And a sealing step, namely pressing the opening end of the packaging shell 1.
In this step, the open end of the housing 1 is bent inward, the cover plate 3 is positioned and pressed, and the sealing member 4 is attached to the cover plate 3 under the bending action of the open end of the housing 1, so as to press the sealing cover plate 3.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A battery assembly, comprising:
the battery pack comprises a shell (1), wherein the inside of the shell (1) is hollow, one end of the shell is open, a cylindrical battery cell (5) is arranged inside the shell (1), and a circumferential inner groove (11) is formed in the circumferential inner groove of the shell (1);
The switching piece (2) is arranged on the cylindrical battery cell (5), and one axial end of the switching piece (2) is pressed between the circumferential inner groove (11) and the cylindrical battery cell (5) and is in butt joint with the circumferential inner groove (11) and the cylindrical battery cell (5);
the cover plate (3) is abutted with the other axial end of the adapter piece (2), and the opening end of the shell (1) is inwards bent to position the cover plate (3);
The adapter piece (2) of the battery assembly is respectively in direct contact with the shell (1) and the cover plate (3).
2. The battery assembly according to claim 1, wherein the adapter tab (2) comprises:
the bottom plate (21) is circular, and is connected with the cylindrical battery cell (5);
The bending side plate (22) is circumferentially connected with the bottom plate (21), and the bending side plate (22) is arranged at an included angle with the bottom plate (21) and is abutted against the side wall of the circumferential inner groove (11);
the bending piece (23) is vertically arranged, one axial end of the bending piece (23) is circumferentially connected with the bending side plate (22), and the other axial end of the bending piece (23) can be bent and abutted with the cover plate (3).
3. The battery assembly according to claim 1, further comprising a sealing member (4), wherein the sealing member (4) seals the outer periphery of the cover plate (3) and the outer periphery of the other axial end of the adapter plate (2), and the opening end of the casing (1) is bent inward and abutted against the sealing member (4).
4. A battery pack according to claim 3, wherein the sealing member (4) is a sealing rubber ring, the cross section of the sealing rubber ring is L-shaped, the outer side of the L-shaped sealing rubber ring is abutted against the circumferential inner groove (11), and the inner side of the L-shaped sealing rubber ring can be folded to wrap the outer periphery of the cover plate (3).
5. The battery assembly according to claim 1, wherein the end of the cylindrical cell (5) contacting the adapter piece (2) is a positive or negative output end.
6. The battery assembly according to claim 5, characterized in that the material of the housing (1) is aluminum or steel.
7. A battery manufacturing method for manufacturing the battery assembly according to any one of claims 1 to 6, comprising the steps of:
Assembling, namely assembling the cylindrical battery cell (5) and the adapter piece (2) in the shell (1);
A rolling groove processing step, namely rolling the periphery of the shell (1) to form a circumferential inner groove (11), so that one axial end of the adapter piece (2) is pressed between the circumferential inner groove (11) and the cylindrical battery cell (5);
Bending, namely bending the other axial end of the adapter piece (2), and assembling the cover plate (3) on the other axial end of the adapter piece (2);
And sealing, namely tightly sealing the opening end of the shell (1).
8. The battery manufacturing method according to claim 7, characterized in that in the bending step, a seal member (4) is further assembled, the seal member (4) abuts against a side wall of the circumferential inner groove (11), and the other axial end of the adapter piece (2) is bent toward the seal member (4).
9. The method of manufacturing a battery according to claim 8, wherein in the sealing step, an open end of the case (1) is folded inward to be press-fitted and sealed against the sealing member (4).
10. The battery manufacturing method according to claim 7, characterized in that in the assembling step, the adapter piece (2) is connected to a tab portion of the positive or negative output terminal of the cylindrical cell (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210427204.8A CN114725628B (en) | 2022-04-21 | 2022-04-21 | Battery assembly and battery manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210427204.8A CN114725628B (en) | 2022-04-21 | 2022-04-21 | Battery assembly and battery manufacturing method |
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| CN114725628A CN114725628A (en) | 2022-07-08 |
| CN114725628B true CN114725628B (en) | 2024-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024019547A1 (en) * | 2022-07-19 | 2024-01-25 | 주식회사 엘지에너지솔루션 | Battery, and battery pack and vehicle comprising same |
| CN115347328B (en) * | 2022-07-28 | 2024-03-15 | 江苏正力新能电池技术有限公司 | Cylindrical battery switching structure, cylindrical battery and assembly method of cylindrical battery |
| CN115632212A (en) * | 2022-11-02 | 2023-01-20 | 远景动力技术(江苏)有限公司 | Secondary battery, manufacturing method of secondary battery and electronic equipment |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08124547A (en) * | 1994-10-21 | 1996-05-17 | Japan Storage Battery Co Ltd | Alkaline storage battery |
| KR20030081940A (en) * | 2002-04-15 | 2003-10-22 | 삼성에스디아이 주식회사 | Cap assembly and secondary battery therewith |
| JP2012038477A (en) * | 2010-08-04 | 2012-02-23 | Hitachi Vehicle Energy Ltd | Cylindrical battery |
| CN104577177A (en) * | 2013-10-23 | 2015-04-29 | 三星Sdi株式会社 | Rechargeable secondary battery |
| CN106486689A (en) * | 2015-08-25 | 2017-03-08 | 三星Sdi株式会社 | Secondary cell |
| CN106910932A (en) * | 2017-04-13 | 2017-06-30 | 大连中比动力电池有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN209133626U (en) * | 2018-11-06 | 2019-07-19 | 苏州安靠电源有限公司 | High-multiplying-power battery |
| CN212257539U (en) * | 2020-06-29 | 2020-12-29 | 远景动力技术(江苏)有限公司 | Electric connector, electric core, laminate polymer battery and module thereof |
| CN113097633A (en) * | 2021-03-31 | 2021-07-09 | 蜂巢能源科技(无锡)有限公司 | Battery and assembly process thereof |
| CN113363677A (en) * | 2021-04-30 | 2021-09-07 | 蜂巢能源科技(无锡)有限公司 | Lithium battery and preparation method thereof |
| CN214706060U (en) * | 2021-03-31 | 2021-11-12 | 蜂巢能源科技(无锡)有限公司 | A lithium battery structure and lithium battery |
| CN216120648U (en) * | 2021-07-06 | 2022-03-22 | 江苏时代新能源科技有限公司 | Battery monomer, battery and consumer |
| CN114300734A (en) * | 2022-01-08 | 2022-04-08 | 江苏耐驰新能源科技有限公司 | A cylindrical lithium battery structure and its manufacturing method |
| CN216250920U (en) * | 2021-10-20 | 2022-04-08 | 宁德时代新能源科技股份有限公司 | Battery monomer, battery and consumer |
-
2022
- 2022-04-21 CN CN202210427204.8A patent/CN114725628B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08124547A (en) * | 1994-10-21 | 1996-05-17 | Japan Storage Battery Co Ltd | Alkaline storage battery |
| KR20030081940A (en) * | 2002-04-15 | 2003-10-22 | 삼성에스디아이 주식회사 | Cap assembly and secondary battery therewith |
| JP2012038477A (en) * | 2010-08-04 | 2012-02-23 | Hitachi Vehicle Energy Ltd | Cylindrical battery |
| CN104577177A (en) * | 2013-10-23 | 2015-04-29 | 三星Sdi株式会社 | Rechargeable secondary battery |
| CN106486689A (en) * | 2015-08-25 | 2017-03-08 | 三星Sdi株式会社 | Secondary cell |
| CN106910932A (en) * | 2017-04-13 | 2017-06-30 | 大连中比动力电池有限公司 | A kind of lithium ion battery and preparation method thereof |
| CN209133626U (en) * | 2018-11-06 | 2019-07-19 | 苏州安靠电源有限公司 | High-multiplying-power battery |
| CN212257539U (en) * | 2020-06-29 | 2020-12-29 | 远景动力技术(江苏)有限公司 | Electric connector, electric core, laminate polymer battery and module thereof |
| CN113097633A (en) * | 2021-03-31 | 2021-07-09 | 蜂巢能源科技(无锡)有限公司 | Battery and assembly process thereof |
| CN214706060U (en) * | 2021-03-31 | 2021-11-12 | 蜂巢能源科技(无锡)有限公司 | A lithium battery structure and lithium battery |
| CN113363677A (en) * | 2021-04-30 | 2021-09-07 | 蜂巢能源科技(无锡)有限公司 | Lithium battery and preparation method thereof |
| CN216120648U (en) * | 2021-07-06 | 2022-03-22 | 江苏时代新能源科技有限公司 | Battery monomer, battery and consumer |
| CN216250920U (en) * | 2021-10-20 | 2022-04-08 | 宁德时代新能源科技股份有限公司 | Battery monomer, battery and consumer |
| CN114300734A (en) * | 2022-01-08 | 2022-04-08 | 江苏耐驰新能源科技有限公司 | A cylindrical lithium battery structure and its manufacturing method |
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