Semi-laminated rectangular battery

Abstract

The utility model relates to the technical field of batteries, and discloses a semi-laminated rectangular battery, which comprises a long negative plate, a plurality of short positive plates and a diaphragm paper bag, the long negative plate is arranged in a bent shape, a plurality of axially arranged accommodating cavities are formed on the inner side of the long negative plate, the plurality of short positive plates are arranged, and the diaphragm paper bag is arranged between the long negative plate and the short positive plates. The outer sides of the plurality of short positive plates are coated with diaphragm paper bags, the plurality of long negative plates are sequentially arranged in accommodating cavities, the long negative plates are arranged in a bent shape and form a plurality of accommodating cavities, and the short positive plates are coated with the diaphragm paper bags and are sequentially arranged in the accommodating cavities, so that a semi-laminated structure in the battery is realized; according to the invention, the direct contact area between the positive electrode plate and the negative electrode plate is reduced, so that the internal resistance of the battery is reduced, the conductivity of the battery is improved, the overlapping part of the positive electrode plate and the negative electrode plate is reduced, the waste of raw materials is reduced, the problem of powder falling is reduced, the yield of the battery is improved, and the production cost is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely is a kind of half lamination rectangular battery. BACKGROUND

[0002] Battery is a kind of device that can directly convert the energy of chemical energy, internal energy, light energy, atomic energy and other forms into electric energy, battery includes two different material electrodes inside-the positive electrode (also known as cathode) and negative electrode (also known as anode), the two materials can participate in oxidation-reduction reaction in electrolyte (such as liquid, gel or solid), in the reaction process, positive electrode material receives electron, reduction reaction occurs;And negative electrode material releases electron, oxidation reaction occurs, battery is very widely used in modern society, almost covers all the fields needing electric energy.

[0003] In the traditional rectangular battery, the inside usually adopts the structure of positive plate and negative plate repeated superposition, after slitting process, two sections of positive and negative electrode plate will produce current collector burr, not only will cause the adverse of battery thickness and appearance, also can affect the conductivity and structural stability of battery, thereby causing powder drop, so a half lamination rectangular battery is proposed to solve the above problems. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in prior art, and therefore, the utility model provides a half lamination rectangular battery, including long negative plate, short positive plate and diaphragm paper bag, long negative plate is bent and is formed multiple accommodating cavities, the number of short positive plate is multiple, the outside of multiple short positive plate is covered with diaphragm paper bag, and multiple long negative plates are sequentially arranged in accommodating cavity, and gap is arranged between the two sides of diaphragm paper bag and long negative plate.

[0005] The utility model has the advantages that long negative plate is bent and is formed multiple accommodating cavities, and short positive plate is covered in diaphragm paper bag and sequentially arranged in accommodating cavity, realize the half lamination structure inside battery, not only reduce the direct contact area between positive and negative electrode plate, thereby reduce the internal resistance of battery, improve the conductivity of battery, but also reduce the overlapping part of positive and negative electrode plate, reduce the waste of raw material, reduce the problem of powder drop simultaneously, improve the yield of battery, thereby further reduce the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is the structure schematic diagram of the utility model.

[0007] Among them, 1, long negative plate;2, short positive plate;3, diaphragm paper bag;4, gap. DETAILED DESCRIPTION

[0008] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0009] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0010] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0011] In the embodiments, Figure 1 A kind of half-lamella rectangular battery is given, including long negative pole piece 1, short positive pole piece 2 and diaphragm paper bag 3, the long negative pole piece 1 is bently arranged, and multiple containing cavities are formed in the inner side and arranged in axial direction, the number of short positive pole piece 2 is set to multiple, the outer side of multiple short positive pole piece 2 is all coated with diaphragm paper bag 3, and multiple long negative pole piece 1 is sequentially arranged in containing cavity, gap 4 is arranged between the two sides of diaphragm paper bag 3 and long negative pole piece 1, in the process of charging and discharging, the current provided by battery outside flows into or flows out through long negative pole piece 1, while lithium ion penetrates into short positive pole piece 2 through diaphragm paper bag 3, and completes electrochemical reaction. Since gap 4 is arranged between the two sides of diaphragm paper bag 3 and long negative pole piece 1, these gaps help the uniform distribution of electrolyte and the heat dissipation of battery interior, thereby improving the performance and stability of battery.

[0012] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0013] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A semi-laminate rectangular battery, characterized by: It includes long negative pole piece (1), short positive pole piece (2) and diaphragm paper bag (3), the long negative pole piece (1) is bently arranged, and the inner side forms multiple containing cavities arranged in axial arrangement, the number of short positive pole piece (2) is provided with multiple, the outer side of multiple short positive pole piece (2) is covered with diaphragm paper bag (3), and multiple long negative pole piece (1) is sequentially arranged in containing cavity, and the both sides of diaphragm paper bag (3) and long negative pole piece (1) are provided with gap (4).

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