CN219040544U - Rechargeable lithium battery - Google Patents
Rechargeable lithium battery Download PDFInfo
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- CN219040544U CN219040544U CN202223288808.3U CN202223288808U CN219040544U CN 219040544 U CN219040544 U CN 219040544U CN 202223288808 U CN202223288808 U CN 202223288808U CN 219040544 U CN219040544 U CN 219040544U
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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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Abstract
The embodiment of the utility model provides a rechargeable lithium battery, which comprises a battery core, an anode screw, a protection plate, an anode spring plate, an anode steel cap and an anode contact piece; the positive electrode screw, the negative electrode elastic sheet and the positive electrode contact sheet are electrically connected with the protection plate; the negative electrode steel cap is electrically connected with a negative electrode of the battery cell, and the negative electrode steel cap is connected with the negative electrode elastic sheet; be equipped with the screw hole on the electric core positive pole, the first end precession of positive pole screw the screw hole, the second end of positive pole screw runs through the protection shield negative pole shell fragment on the negative pole steel cap and outwards extend, positive pole contact piece passes through threaded connection the second end of positive pole screw. During installation, the positive electrode screw can be directly locked on the cap cover of the positive electrode of the battery cell, the negative electrode steel cap and the battery cell shell are welded, an insulating part is assembled in the packaging process, a protection plate is locked, the negative electrode steel cap is assembled, and the packaging process and the labeling process can be simplified.
Description
Technical Field
The embodiment of the utility model relates to the technical field of lithium batteries, in particular to a rechargeable lithium battery.
Background
Batteries can be divided into a number of models according to their size. The commonly used models are AAA, AA, C, D, corresponding to what we say commonly 7, 5, 2 and 1 batteries, of which the most widely used are especially 1 and 5 batteries. The No. 1 battery is widely applied to civil, military and special direct current power supplies, and the No. 5 battery is widely applied to daily life, such as digital cameras, electric toys and the like.
However, the current battery cell and PACK are assembled by welding the anode and the cathode, so that the existing battery is complex in processing, low in production efficiency, high in material loss and high in production cost.
Disclosure of Invention
The embodiment of the utility model provides a rechargeable lithium battery, which aims to solve the problems that in the prior art, the battery is complex to process, secondary welding is needed after the outside of a battery core is welded, and a PP layer of the battery core is easy to damage.
In order to solve the technical problems, the embodiment of the utility model provides a rechargeable lithium battery, which comprises a battery core, an anode screw, a protection plate, a cathode spring plate, a cathode steel cap and an anode contact piece;
the protection plate, the negative pole elastic piece and the negative pole steel cap are sequentially arranged on the upper part of the positive electrode of the battery cell from bottom to top, and the positive electrode screw, the negative pole elastic piece and the positive electrode contact piece are electrically connected with the protection plate; the negative electrode steel cap is electrically connected with a negative electrode of the battery cell, and the negative electrode steel cap is connected with the negative electrode elastic sheet;
the battery cell comprises a battery cell body, and is characterized in that one end of the battery cell body is provided with a battery cell anode, a threaded hole is formed in the battery cell anode, a first end of an anode screw is screwed into the threaded hole, a second end of the anode screw penetrates through the protection plate, the cathode spring plate, the cathode steel cap and extends outwards, and the anode contact piece is connected with the second end of the anode screw through threads.
Preferably, the protection plate and the positive electrode piece of the battery cell are further provided with a positive electrode insulating piece, and a negative electrode insulating piece is further arranged between the negative electrode steel cap and the positive electrode contact piece.
Preferably, the positive electrode insulator, the protective plate, the negative electrode spring plate, the negative electrode steel cap and the negative electrode insulator are all provided with through holes.
Preferably, the negative pole shrapnel comprises a circular ring-shaped body and one or more shrapnels extending downwards from the edge of the body.
Preferably, a first annular wall and a second annular wall are arranged on the upper portion of the positive electrode insulator, the first annular wall forms an accommodating space for accommodating the protection plate, and an accommodating groove for accommodating the elastic sheet is formed between the first annular wall and the second annular wall.
Preferably, a welding part is arranged on the shell of the battery cell, and the negative electrode steel cap is connected with the welding part through peripheral welding.
Preferably, an upward extension part is arranged outside the through hole on the negative electrode insulating piece so as to form a containing groove for containing the positive electrode contact piece, and a flange is downwards extended from the through hole of the negative electrode insulating piece and matched with the through holes on the negative electrode steel cap and the negative electrode insulating piece.
Preferably, the negative electrode insulating member is in a circular ring shape, a limit groove matched with the positive electrode contact piece is formed in the accommodating groove, and when the positive electrode contact piece is screwed downwards along the positive electrode screw, the lower end of the positive electrode contact piece abuts against the limit groove.
The embodiment of the utility model provides a rechargeable lithium battery, which comprises a battery core, an anode screw, a protection plate, a cathode spring plate, a cathode steel cap and an anode contact piece; the protection plate, the negative pole elastic piece and the negative pole steel cap are sequentially arranged on the upper part of the positive electrode of the battery cell, and the positive electrode screw, the negative pole elastic piece and the positive electrode contact piece are electrically connected with the protection plate; the negative electrode steel cap is electrically connected with a negative electrode of the battery cell, and the negative electrode steel cap is connected with the negative electrode elastic sheet; the battery cell comprises a battery cell, and is characterized in that one end of the battery cell is provided with a battery cell anode, a threaded hole is formed in the battery cell anode, a first end of an anode screw is screwed into the threaded hole, a second end of the anode screw penetrates through the protection plate, the cathode spring plate and the cathode steel cap and extends outwards, and the anode contact piece is connected with the second end of the anode screw through threads. During installation, the positive electrode screw can be directly locked on the cap cover of the positive electrode of the battery cell, the battery cell shell is welded through the negative electrode steel cap, the insulating part is assembled in the packaging process, the protection plate is locked, the negative electrode steel cap is assembled, the battery cell is welded and labeled, the PACK welding assembly process can be simplified, secondary welding is not needed after the battery cell is welded, and the PP layer of the battery cell is not damaged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing the overall structure of a rechargeable lithium battery according to an embodiment of the present utility model;
fig. 2 is a top view of a rechargeable lithium battery according to an embodiment of the present utility model;
fig. 3 is an exploded view of a solid structure of a rechargeable lithium battery according to an embodiment of the present utility model;
FIG. 4 is a side view exploded view of a rechargeable lithium battery according to an embodiment of the present utility model;
fig. 5 is a cross-sectional view of a rechargeable lithium battery according to an embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone.
The terms "first", "second" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "comprise" and "have," along with any variations thereof, are intended to cover non-exclusive inclusions. For example, a system, article, or apparatus that comprises a list of elements is not limited to only those elements or units listed but may alternatively include other elements not listed or inherent to such article, or apparatus. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The protection plate is placed outside the battery cell in the lithium ion battery, the top area of the battery cell is limited, the welding of the negative electrode is a technical difficulty, the internal resistance is higher due to the easy cold welding in the welding process, the self heat loss is increased, the capacity and the battery performance of the lithium ion battery are affected, the productivity brought by the production welding is too low, and the production cost and the repair cost are too high.
Therefore, the embodiment of the utility model provides a rechargeable lithium battery which is connected with a laser welding mode through a screw locking mode, so that the problems caused by adopting a welding mode for positive and negative electrodes are solved; the positive electrode adopts a screw locking mode to increase the welding area of the positive electrode, and reduces the technical difficulties brought by welding, thereby effectively avoiding the potential problems of cold joint repair and the like of the PACK procedure. The following description and description will be made with reference to various embodiments.
Fig. 1 to 5 show a rechargeable lithium battery according to an embodiment of the present utility model, which includes a battery core 1, a positive electrode screw 7, a protection plate 2, a negative electrode insulator 3, a negative electrode spring plate 6, a negative electrode steel cap 5, a positive electrode insulator 8, and a positive electrode contact 4.
The positive electrode insulator 8, the protection plate 2, the negative electrode spring plate 6, the negative electrode steel cap 5 and the negative electrode insulating plate are sequentially arranged on the upper part of the positive electrode of the battery cell from bottom to top, and the positive electrode screw 7, the negative electrode spring plate 6 and the positive electrode contact piece 4 are electrically connected with the protection plate 2; the negative electrode steel cap 5 is electrically connected with the negative electrode of the battery cell 1, and the negative electrode steel cap 5 is connected with the negative electrode elastic sheet 6.
The positive electrode insulator 8, the protection plate 2, the negative electrode spring plate 6, the negative electrode steel cap 5 and the negative electrode insulator 3 are all provided with through holes. The shell of the battery cell 1 is provided with a welding part, and the negative electrode steel cap 5 is connected with the welding part through peripheral welding.
The positive electrode insulator 8 is arranged between the battery cell 1 and the protection plate 2, the positive electrode insulator 8 is made of plastic materials, and the positive electrode insulator 8 is annular, so that connection and interference between the battery cell 1 and the protection plate 2 are prevented.
The negative electrode insulator 3 is arranged between the negative electrode steel cap 5 and the positive electrode contact piece 4, the negative electrode insulator 3 is made of plastic materials, and the negative electrode insulator 3 is annular, so that the negative electrode steel cap 5 and the positive electrode contact piece 4 are prevented from being connected and have a positioning effect.
The battery cell is characterized in that a battery cell anode is arranged at one end of the battery cell 1, a threaded hole is formed in the battery cell anode, a first end of an anode screw 7 is screwed into the threaded hole, a second end of the anode screw 7 penetrates through the anode insulator 8, the protection plate 2, the cathode spring plate 6, the cathode steel cap 5 and the cathode insulating plate and extends outwards, and the anode contact piece 4 is connected with a second end of the anode screw 7 through threads and passes through the anode contact piece 4.
During installation, the positive electrode screw 7 can be directly connected to the battery cell 1 through rotation, the negative electrode steel cap 5 can be directly connected to the battery cell 1 through peripheral welding, the packaging process is rotation connection, welding, testing and labeling, the PACK welding assembly process can be simplified, and the production cost is reduced.
Based on the above embodiment, as a preferred embodiment, the negative electrode elastic sheet 6 includes a circular body and one or more elastic sheets extending downward from the edge of the body.
On the basis of the above embodiment, as a preferred embodiment, the upper portion of the positive electrode insulating member 8 is provided with a first annular wall and a second annular wall, the first annular wall forms a containing space for containing the protection plate 2, and a containing groove for containing the elastic sheet is formed between the first annular wall and the second annular wall.
On the basis of the above embodiment, as a preferred embodiment, an upward extension portion is provided on the outside of the through hole on the negative electrode insulator 3 to form a receiving groove for receiving the positive electrode contact piece 4, the through hole of the negative electrode insulator 3 is extended downward to form a flange, the flange is matched with the through hole on the negative electrode steel cap 5 and the negative electrode insulator 3, and misalignment among the negative electrode steel cap 5, the negative electrode insulator 3 and the negative electrode spring piece 6 is prevented by matching the flange with the through hole.
On the basis of the above embodiment, as a preferred embodiment, the negative electrode insulating member 3 is in a circular ring shape, a limiting groove matched with the positive electrode contact piece 4 is provided in the accommodating groove, and when the positive electrode contact piece 4 is screwed down along the positive electrode screw 7, the lower end of the positive electrode contact piece 4 abuts against the limiting groove.
In summary, the rechargeable lithium battery provided by the embodiment of the utility model comprises a battery core, an anode screw, a protection plate, a cathode spring plate, a cathode steel cap and an anode contact piece; the protection plate, the negative pole elastic piece and the negative pole steel cap are sequentially arranged on the upper part of the positive electrode of the battery cell, and the positive electrode screw, the negative pole elastic piece and the positive electrode contact piece are electrically connected with the protection plate; the negative electrode steel cap is electrically connected with a negative electrode of the battery cell, and the negative electrode steel cap is connected with the negative electrode elastic sheet; the battery cell comprises a battery cell, and is characterized in that one end of the battery cell is provided with a battery cell anode, a threaded hole is formed in the battery cell anode, a first end of an anode screw is screwed into the threaded hole, a second end of the anode screw penetrates through the protection plate, the cathode spring plate and the cathode steel cap and extends outwards, and the anode contact piece is connected with the second end of the anode screw through threads. During installation, the positive electrode screw can be directly locked on the cap cover of the positive electrode of the battery cell, the battery cell shell is welded through the negative electrode steel cap, the insulating part is assembled in the packaging process, the protection plate is locked, the negative electrode steel cap is assembled, the battery cell is welded and labeled, the PACK welding assembly process can be simplified, secondary welding is not needed after the battery cell is welded, and the PP layer of the battery cell is not damaged.
The embodiments of the present utility model may be arbitrarily combined to achieve different technical effects.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (8)
1. The rechargeable lithium battery is characterized by comprising a battery core, an anode screw, a protection plate, a cathode elastic piece, a cathode steel cap and an anode contact piece;
the protection plate, the negative pole elastic piece and the negative pole steel cap are sequentially arranged on the upper part of the positive electrode of the battery cell from bottom to top, and the positive electrode screw, the negative pole elastic piece and the positive electrode contact piece are electrically connected with the protection plate; the negative electrode steel cap is electrically connected with a negative electrode of the battery cell, and the negative electrode steel cap is connected with the negative electrode elastic sheet;
the battery cell comprises a battery cell body, and is characterized in that one end of the battery cell body is provided with a battery cell anode, a threaded hole is formed in the battery cell anode, a first end of an anode screw is screwed into the threaded hole, a second end of the anode screw penetrates through the protection plate, the cathode spring plate, the cathode steel cap and extends outwards, and the anode contact piece is connected with the second end of the anode screw through threads.
2. The rechargeable lithium battery of claim 1, wherein the protective plate and the cell positive member are further provided with a positive electrode insulator, and a negative electrode insulator is further provided between the negative electrode steel cap and the positive electrode contact piece.
3. The rechargeable lithium battery of claim 2, wherein the positive electrode insulator, the protective plate, the negative electrode spring plate, the negative electrode steel cap, and the negative electrode insulator are each provided with a through hole therethrough.
4. The rechargeable lithium battery of claim 1, wherein the negative electrode tab comprises an annular body and one or more tabs extend downwardly from a rim of the body.
5. The rechargeable lithium battery of claim 3, wherein the positive electrode insulator has a first circular wall and a second circular wall on an upper portion thereof, the first circular wall forming a receiving space for receiving the protection plate, and a receiving groove for receiving the elastic sheet is formed between the first circular wall and the second circular wall.
6. The rechargeable lithium battery of claim 1, wherein a welding portion is provided on the outer case of the battery cell, and the negative electrode steel cap is connected to the welding portion by peripheral welding.
7. A rechargeable lithium battery according to claim 3, wherein an upward extension is provided outside the through hole in the negative electrode insulator to form a receiving groove for receiving the positive electrode contact, and the through hole in the negative electrode insulator is extended downward with a flange, which is matched with the through holes in the negative electrode steel cap and the negative electrode insulator.
8. The rechargeable lithium battery of claim 7, wherein the negative electrode insulator is annular, a limit groove matched with the positive electrode contact piece is formed in the accommodating groove, and when the positive electrode contact piece is screwed downwards along the positive electrode screw, the lower end of the positive electrode contact piece abuts against the limit groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223288808.3U CN219040544U (en) | 2022-12-08 | 2022-12-08 | Rechargeable lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223288808.3U CN219040544U (en) | 2022-12-08 | 2022-12-08 | Rechargeable lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219040544U true CN219040544U (en) | 2023-05-16 |
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ID=86315418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223288808.3U Active CN219040544U (en) | 2022-12-08 | 2022-12-08 | Rechargeable lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219040544U (en) |
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2022
- 2022-12-08 CN CN202223288808.3U patent/CN219040544U/en active Active
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