Semi-winding rectangular battery

Abstract

The utility model relates to the technical field of batteries, and discloses a semi-winding rectangular battery, which comprises a long negative plate and a plurality of short positive plates, the long negative plate is arranged in a snakelike bending manner, the plurality of short positive plates are respectively arranged at the corners of the long negative plate, and the long negative plate and the short positive plates are respectively arranged at the corners of the long negative plate. The diaphragm paper bags are arranged between the long negative plate and the plurality of short positive plates for separation, and the long negative plate in a snakelike bent shape is arranged and is staggered with the plurality of short positive plates at corners, so that the edge of the battery is naturally formed, the production process is simplified, the production cost is reduced, and the production efficiency is improved. And moreover, more electrode reaction areas can be provided in a limited space, so that the energy density of the battery can be improved, and the battery can store more electric energy under the same volume or weight.

Description

TECHNICAL FIELD

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

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

[0003] The internal electrode sheet of common rectangular battery usually adopts laminated structure, four edge cutting is needed in the processing process, there is greater safety hazard, and laminated structure is more difficult to control alignment and burr, thereby increasing the risk of internal short circuit, so a half winding 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 the prior art, and therefore, the utility model provides a half winding rectangular battery, which comprises a long negative electrode sheet and a short positive electrode sheet, the long negative electrode sheet is arranged in a serpentine shape, and the number of the short positive electrode sheets is multiple, the multiple short positive electrode sheets are arranged at the corners of the long negative electrode sheet respectively, and the long negative electrode sheet and the multiple short positive electrode sheets are both provided with diaphragm paper bags for separation.

[0005] The utility model has the beneficial effects that the long negative electrode sheet in the utility model is arranged in a serpentine shape, and is staggered with the multiple short positive electrode sheets at the corners, so that the edge of the battery is naturally formed, the production process is simplified, the production cost is reduced, more electrode reaction area can be provided in limited space, the energy density of the battery is improved, and the battery can store more electric energy under the same volume or weight. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a whole schematic view of the utility model.

[0007] Among them, 1, long negative electrode sheet;2, short positive electrode sheet;3, diaphragm paper bag. 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 do not indicate or imply 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; it can be the communication between 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 semi-winding rectangular battery is given, including long negative pole piece 1 and short positive pole piece 2, the long negative pole piece 1 is serpentine bending arrangement, and the number of short positive pole piece 2 is multiple, multiple short positive pole piece 2 is respectively arranged at the corner of long negative pole piece 1, the long negative pole piece 1 with multiple short positive pole piece 2 between all be provided with diaphragm paper bag 3 and be cut off, long negative pole piece 1 adopts serpentine bending design, increase the surface area of negative pole, help to improve the capacity and performance of battery, multiple short positive pole piece 2 is respectively arranged at the corner of long negative pole piece 1, so that the contact area between positive pole and negative pole is maximized, while maintaining the compactness of battery structure, diaphragm paper bag 3 can prevent the direct contact between positive pole and negative pole, thereby avoiding battery short circuit.

[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-wound rectangular battery, characterized by: The application relates to a battery, which comprises a long negative electrode sheet (1) and a plurality of short positive electrode sheets (2), wherein the long negative electrode sheet (1) is arranged in a serpentine shape, and the plurality of short positive electrode sheets (2) are arranged at the corners of the long negative electrode sheet (1), and a diaphragm paper bag (3) is arranged between the long negative electrode sheet (1) and the plurality of short positive electrode sheets (2) to separate them.

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