CN217788483U - Fully-sealed high-capacity low-current charge-discharge battery - Google Patents

Abstract

The utility model provides a totally enclosed high capacity undercurrent charge-discharge battery, including upper cover plate, lower casing, its characterized in that still includes first polarity post, first utmost point nail, first utmost point ear, second polarity post and diaphragm, wherein, the upper cover plate contains the first cap that has first polarity and the second cap that has second polarity, first cap and the second cap is insulating; the first pole nail penetrates into the first pole column; the first lug is connected with the first pole nail and the first shell cover; the second polarity column surrounds the first polarity column; the second polarity column is in close contact with the inner wall of the lower shell; the first and second polarity columns are separated by the membrane. The utility model discloses can reduce the manufacturing cost of battery, increase battery life, simultaneously, the battery structure is simpler, the assembly is more convenient, satisfies the demand of high-efficient production.

Description

Fully-sealed high-capacity low-current charge-discharge battery

Technical Field

The utility model belongs to the technical field of the battery, concretely relates to totally enclosed high capacity undercurrent fills discharge battery.

Background

With the development of portable electronic products and smart wearable electronic products, batteries are required to be more miniaturized. Also, a higher endurance is required while maintaining a longer battery life. The conventional cells of the batteries in the current market are basically divided into a winding cell and a laminated cell. In both wound and laminated cells, a large number of current collectors made of copper foil or aluminum foil are required on the electrode sheets to collect the current generated from the active materials of the electrode sheets to form a large current output, and, traditional electric core needs a large amount of diaphragms to keep apart the positive and negative electrode slice of battery, and the use of mass flow collector and diaphragm can make the cost of manufacture of battery higher to also make the inside effective space of battery reduce, thereby cause the capacity of battery not high. Especially for chargeable and dischargeable battery, the battery comprising the traditional battery cell structure has lower cruising ability and shorter cycle time and storage time, so that the cruising ability of the electronic product provided with the battery with the traditional battery cell structure is poorer, and the user experience is influenced.

Therefore, it is desirable to provide a battery having a lower cost and a higher capacity.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model provides a totally enclosed high capacity undercurrent fills discharge battery, it has good leakproofness to thereby can reduce the production manufacturing process and the cost of battery, improve battery capacity, extension battery cycle time increase battery life.

The utility model provides a totally enclosed high capacity undercurrent charge-discharge battery, including upper cover plate, lower casing, its characterized in that still includes first polarity post, first utmost point nail, first utmost point ear, second polarity post and diaphragm, wherein, the upper cover plate contains the first cap that has first polarity and the second cap that has second polarity, first cap and the second cap is insulating; the first pole nail penetrates into the first pole column; the first pole lug is connected with the first pole nail and the first shell cover; the second polarity post surrounds the first polarity post; the second polarity column is in close contact with the inner wall of the lower shell; the first and second polarity columns are separated by the membrane.

In some embodiments, the first tab is connected to the first housing cover by welding.

In some embodiments, the length of the first pole peg is the same as the depth of the first pole post.

In some embodiments, the first pole peg is located on a central axis of the first polarity post.

In some embodiments, the fully sealed high capacity low current charge and discharge battery is a cylindrical battery.

In some embodiments, the first polarity post is a cylindrical structure.

In some embodiments, the second polarity pillars are circular ring pillar structures.

In some embodiments, the first polar column and the second polar column are both of a monolithic structure.

In some embodiments, the first polarity is positive and the second polarity is negative.

In some embodiments, the first polarity is negative and the second polarity is positive.

The utility model has the advantages that:

the utility model saves the use of the positive and negative current collectors and partial diaphragms by using the first polar column (positive pole column or negative pole column) formed by the monomer and the second polar column (negative pole column or positive pole column) formed by the monomer, on one hand, the production cost of the battery can be reduced; on the other hand, compare with the battery under the same volume, increased the capacity of the inside active material of battery to can prolong battery cycle time and increase battery life then, make the duration of the electronic product of assembling this kind of battery stronger, promote user experience. Furthermore, the utility model discloses a fashioned first polarity post of monomer (anodal post or negative pole post) and the fashioned second polarity post of monomer (negative pole post or anodal post), also make battery structure simpler, the assembly is more convenient, has further reduced the manufacturing cost of battery and has satisfied the demand of high-efficient production.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic cross-sectional view of a fully sealed high-capacity low-current charge-discharge battery according to an embodiment of the present invention;

fig. 2A is a schematic top view of a first polarity column according to an embodiment of the present invention;

fig. 2B is a schematic top view of a second polarity column according to an embodiment of the present invention.

In the figure, the meaning of each symbol is as follows:

110. an upper cover plate; 111. a first housing cover; 112. a second housing cover; 120. a lower housing; 130. a first polarity column; 131. a first pole nail; 132. a first tab; 140. a second polarity column; 150. a diaphragm.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 1 is a schematic cross-sectional view of a fully sealed high-capacity low-current charge/discharge battery 100 (hereinafter, referred to as "battery 100") according to an embodiment of the present invention.

As shown in fig. 1, the battery 100 may include an upper cover sheet 110 and a lower case 120. Wherein the upper cover plate 110 is a fully sealed structure. In some embodiments, the battery 100 may be a cylindrical battery, such as a button cell battery. In some embodiments, battery 100 may also be of other configurations, such as a square, rectangular, or other anisotropic configuration. In some embodiments, the upper cover sheet 110 and the lower housing 120 may be welded by ring laser welding to form a fully sealed cavity after the assembly of other components is completed. The cell and other structures can be accommodated in the fully sealed cavity.

The upper cover plate 110 may include a first cover 111 having a first polarity and a second cover 112 having a second polarity. One of the first polarity and the second polarity is a positive electrode, and the other is a negative electrode, that is, when the first polarity is a positive electrode, the second polarity is a negative electrode; when the first polarity is negative, the second polarity is positive.

The first housing cover 111 shown in FIG. 1 includes a centrally located circular boss and an edge annular side, which are integrally formed. The second cover 112 shown in fig. 1 is circular and has through holes through which the circular bosses of the first cover 111 can pass. It should be noted that the structure of the upper cover 110 (which may include the shape of the first housing cover 111, the shape of the second housing cover 112, the layout of the first housing cover 111 and the second housing cover 112, etc.) shown in fig. 1 is only exemplary and is not intended to limit the present invention. In other embodiments, the upper cover plate may also be of other structures, as long as the upper cover plate of other structures has the function of the upper cover plate required by the present invention, then, it is all within the protection scope of the present invention.

Because the polarity of the first shell cover 111 is opposite to that of the second shell cover 112, all places where the first shell cover 111 and the second shell cover 112 can be contacted are isolated by insulating materials, so that the first shell cover 111 and the second shell cover 112 are prevented from being connected, the short circuit of the battery is reduced, and the safety and the stability of the battery are improved. The insulating material may be PET (Polyethylene Terephthalate), PE (Polyethylene), PP (Polypropylene), ABS (Acrylonitrile Butadiene Styrene), EVA (Ethylene Vinyl Acetate Copolymer), PVC (Polyvinyl Chloride), etc. or other suitable materials.

The first cover 111, the second cover 112 and the insulating material for isolating the two can be formed into an integral enclosure by means of bonding or thermal compression, or other suitable means.

The lower case 120 accommodates a battery cell therein. The cell includes a first polarity column 130 and a second polarity column 140. The first polarity post 130 has a first polarity. The second polarity post 140 has a second polarity. In some embodiments, the first polarity post 130 and the second polarity post 140 may both be a unitary structure. In some embodiments, the first and second polarity columns 130 and 140 may have a predetermined structure by subjecting the positive or negative electrode active material to a pressure treatment. For example, in some embodiments, the first polarity post 130 may be a cylindrical structure (e.g., a monolithic cylindrical structure), and in some embodiments, the second polarity post 140 may be a circular cylindrical structure (e.g., a monolithic circular cylindrical structure). The second polarity post 140 may surround the first polarity post 130. In some embodiments, the second polarity post 140 may be in intimate contact with the inner wall of the lower housing 120, i.e., the second polarity post 140 may be in direct contact with the inner wall of the lower housing 120, i.e., contact without other indirect connections such as welding. The first and second polarity columns 130 and 140 may be specifically referred to fig. 2A and 2B. Fig. 2A is a top view of the first polarity column 130 having a cylindrical structure shown in fig. 1, and fig. 2B is a top view of the second polarity column 140 having a circular cylindrical structure shown in fig. 1.

The present invention provides a battery having a single first polarity post 130 and a single second polarity post 140, which eliminates the current collector in the conventional battery cell structure and the diaphragm between the positive plate and the negative plate of the conventional battery cell, thereby increasing the active material inside the battery. Therefore, compare with the same traditional structure battery of size, the utility model discloses a battery has bigger inside effective space, and battery capacity is higher to the capacity decay of battery still less, cycle time is longer, and further, can make the duration of the electronic product of the battery of having assembled this electricity core structure stronger, user experience is better. In addition, because the second polar column 140 is tightly attached to the inner wall of the lower case 120, no tab is needed for connection, and no connection point is formed to further occupy space, therefore, the effective space inside the battery is increased, and the active substances inside the battery with the same volume can be increased.

Furthermore, the utility model discloses a free first polarity post 130 (anodal post or negative pole post) and free second polarity post 140 (negative pole post or anodal post) also make the battery structure simpler, the assembly is more convenient, consequently, can reduce the manufacturing cost of battery and satisfy the demand of high-efficient production.

Battery 100 also includes a first pole nail 131. The first pole nail 131 is embedded inside the first polarity post 130. The first pole pin 131 may be disposed along a radial direction of the first polarity post 130. In some embodiments, the first pole pin 131 may be located on a central axis of the first polarity post 130. The first pole nail 131 may be a cylindrical structure, a nail-like structure, or other structures. In some embodiments, the length of the first pole peg 131 is the same as the height of the first polarity post 130.

The battery 100 also includes a first tab 132. The first tab 132 may connect the first pole nail 131 and the first case cover 111. In some embodiments, the first tab 132 may connect the first pole nail 131 and the first housing cover 111 by welding. The number of welding points formed by the first tab 132 and the first pole nail 131 may be any, for example, 1, 2, 3, 4, etc.

Since the first polarity column 130 and the second polarity column 140 have opposite polarities, they need to be isolated from each other by the separator 150 made of an insulating material, so as to reduce the occurrence of short circuit of the battery and improve the safety and stability of the battery. The insulating material may be PET, PE, PP, ABS, EVA, PVC, etc. or other suitable material.

In addition, since the second polarity column 140 is closely attached to the inner wall of the lower case 120, the polarity of the second polarity column 140 is the same as that of the lower case 120, that is, the polarity of the lower case 120 is opposite to that of the first polarity column 130, and thus the diaphragm 150 further includes a portion for separating the first polarity column 130 from the lower case 120. The shape of the diaphragm 150 conforms to the shape of the first polarity post 130. As shown in fig. 1, for the first polarity column 130 of a cylindrical structure, the diaphragm 150 may be a cylindrical barrel structure. In some embodiments, since the polarities of the second polarity post 140 and the first cover 111 are opposite, the separator 150 may further include a portion for isolating the second polarity post 140 from the first cover 111, thereby reducing the occurrence of short circuit of the battery and improving the safety and stability of the battery.

In addition, when the first polarity is a positive electrode and the second polarity is a negative electrode, the materials of the first case cover 111, the first pole nail 131, and the first pole tab 132 may be aluminum or other suitable materials. The material of the second cover 112 and the lower housing 120 may be stainless steel or other suitable material. The first polarity column 130 contains a positive active material, which may be a mixture of one or more of lithium cobaltate, lithium manganate, lithium iron phosphate, lithium cobalt nickel manganate, lithium nickel nickelate, and the like. The second polar column 140 contains a negative active material, which may be a mixture of one or more of graphite, mesocarbon microbeads, lithium titanate, silicon carbon material, and the like. When the first polarity is a positive polarity and the second polarity is a positive polarity, the materials of the first case cover 111, the first pole nail 131 and the first pole tab 132 may be stainless steel or other suitable materials. The first polar column 130 contains a negative active material, which may be a mixture of one or more of graphite, mesocarbon microbeads, lithium titanate, silicon carbon material, and the like. The second polar column 140 contains a positive active material, which may be one or a mixture of more of lithium cobaltate, lithium manganate, lithium iron phosphate, lithium cobalt nickel manganate, lithium nickel nickelate, and the like. The material of the second cover 112 and the lower housing 120 may be aluminum or other suitable material.

It is noted that the battery 100 shown in fig. 1 is merely exemplary and is not intended to limit the present invention. Although not shown in fig. 1, some structures do not explain that the battery disclosed in the present invention does not have such a structure. For example, the structure of other conventional batteries such as the liquid injection hole and the safety valve is also within the protection scope of the present invention.

In the description of the present embodiments, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A fully-sealed high-capacity low-current charge-discharge battery comprises an upper cover plate (110) and a lower shell (120), and is characterized by further comprising a first polarity column (130), a first pole nail (131), a first pole lug (132), a second polarity column (140) and a diaphragm (150), wherein,

the upper cover plate (110) comprises a first cover (111) with a first polarity and a second cover (112) with a second polarity, and the first cover (111) and the second cover (112) are insulated;

the first pole nail (131) penetrates into the first pole column (130);

the first pole lug (132) is connected with the first pole nail (131) and the first shell cover (111);

the second polarity post (140) surrounds the first polarity post (130);

the second polarity pillars (140) are in close contact with the inner wall of the lower case (120);

the first polarity post (130) and the second polarity post (140) are separated by the membrane (150).

2. The fully sealed high capacity low current charge and discharge battery as claimed in claim 1, wherein said first tab (132) is connected to said first cover (111) by welding.

3. A fully sealed high capacity low current charge and discharge battery according to claim 1, wherein the length of said first pole nail (131) is the same as the depth of said first pole stud (130).

4. A fully sealed high capacity low current charge and discharge battery according to claim 1, wherein said first pole nail (131) is located on the central axis of said first polarity post (130).

5. The fully sealed high capacity low current charge and discharge battery as claimed in claim 1, wherein said fully sealed high capacity low current charge and discharge battery is a cylindrical battery.

6. The fully sealed high capacity low current charge and discharge battery of claim 1, wherein said first polarity post (130) is a cylindrical structure.

7. A fully sealed high capacity low current charge and discharge battery as claimed in claim 1, wherein said second polarity column (140) is a circular cylindrical structure.

8. The fully sealed high capacity low current charge and discharge battery as claimed in any one of claims 1 to 7 wherein the first polarity post (130) and the second polarity post (140) are of a single structure.

9. A fully sealed high capacity low current charge and discharge battery according to any one of claims 1 to 7 wherein: the first polarity is a positive electrode and the second polarity is a negative electrode.

10. A fully sealed high capacity low current charge and discharge battery according to any one of claims 1 to 7 wherein: the first polarity is a negative electrode and the second polarity is a positive electrode.

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