CN216389581U

CN216389581U - Large-capacity winding type lithium battery

Info

Publication number: CN216389581U
Application number: CN202123183120.4U
Authority: CN
Inventors: 蒋丽馨; 王梅
Original assignee: Mianyang Tuodatong Technology Co ltd
Current assignee: Mianyang Tuodatong Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-26
Anticipated expiration: 2031-12-17

Abstract

The utility model belongs to the technical field of lithium batteries, and discloses a high-capacity winding type lithium battery, which comprises a lithium battery monomer and a water-cooling shell; a battery shell is arranged on the outer side of the single lithium battery, a first electrode plate and a second electrode plate are arranged in the battery shell, and the first electrode plate and the second electrode plate are both of a wave-shaped structure; the outer sides of the plurality of lithium battery single bodies are fixedly connected through the combined connector, and the inner side of the water-cooling shell is provided with a plurality of groups of lithium battery single bodies connected through the combined connector. The wavy electrode plates are arranged, so that the contact area of the electrode plates can be increased to the greatest extent, and the purpose of expanding the battery capacity can be achieved; the modular design is adopted, a plurality of lithium battery monomers can be assembled together through the combined connector to form a battery pack, and the modular design can adapt to various different use requirements; through setting up water-cooling shell, can cool down the battery, effectively reduce the battery and generate heat.

Description

Large-capacity winding type lithium battery

Technical Field

The utility model belongs to the technical field of lithium batteries, and particularly relates to a high-capacity winding type lithium battery.

Background

At present, the most used batteries are wound batteries and lithium batteries, which are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. The winding battery is a battery formed by assembling and forming battery cores in a winding mode. Compared with a lithium battery, the winding battery has the advantages of super-strong high-rate discharge capacity, good working capacity under partial charge state, no free electrolyte, capability of being placed in any direction for working, firm structure and strong shock resistance, and is widely applied to the fields of vehicle starting, automobile emergency power supplies, generator starting, hybrid electric vehicles and solar energy storage. Therefore, the research on the wound battery has been a popular subject of research by scientists.

The conventional battery is small in capacity, short in service time and low in adaptability, the batteries of different specifications are required to be manufactured in the face of different working environments, heat can be released during the working of the batteries, and the service life of the batteries can be shortened due to excessive heat accumulation.

Through the above analysis, the problems and defects of the prior art are as follows:

(1) the existing battery is generally small in capacity, poor in adaptability and single in specification.

(2) The existing battery has poor heat dissipation performance, and the service life of the battery is greatly reduced.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a high-capacity winding type lithium battery.

The utility model is realized in such a way that a high-capacity wound lithium battery is provided with:

the lithium battery comprises a lithium battery monomer and a water-cooled shell;

a battery shell is arranged on the outer side of the single lithium battery, a first electrode plate and a second electrode plate are arranged in the battery shell, and the first electrode plate and the second electrode plate are both of a wave-shaped structure;

the outer sides of the plurality of lithium battery single bodies are fixedly connected through the combined connector, and the inner side of the water-cooling shell is provided with a plurality of groups of lithium battery single bodies connected through the combined connector.

Furthermore, the battery shell is made of PVE materials and is in an oval shape.

Further, an isolation film is arranged between the inner side of the battery shell and the first electrode plate.

Further, the water-cooling shell upper end is fixed with the electric quantity display through the bolt, the electric quantity display passes through interconnecting link and is connected with every lithium cell monomer respectively.

Furthermore, the combined connector is provided with a cross-shaped support frame, and four included angles of the cross-shaped support frame are respectively fixed with a lithium battery monomer.

Further, the water-cooling shell is provided with a plurality of assembled shell modules, and a water-cooling pipeline is arranged in each shell module.

By combining all the technical schemes, the utility model has the advantages and positive effects that:

the electrode plate with the waves can achieve the purpose of expanding the battery capacity, and the electrode plate with the waves can improve the contact area of the electrode plate to the maximum extent, so that the battery capacity is improved; the modular design is adopted, a plurality of lithium battery monomers can be assembled together through the combined connector to form a battery pack, and the modular design can adapt to various different use requirements; through setting up water-cooling shell, can cool down the battery, effectively reduce the battery and generate heat.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a large-capacity wound lithium battery provided in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an electrode sheet provided in an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a water-cooled enclosure according to an embodiment of the present invention.

In the figure: 1. a lithium battery cell; 2. a first electrode sheet; 3. a second electrode sheet; 4. an isolation film; 5. an electric quantity display; 6. a combination connector; 7. water-cooling the housing; 8. a battery case.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In view of the problems in the prior art, the present invention provides a large capacity wound lithium battery, which is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the large capacity winding type lithium battery according to the embodiment of the present invention includes a lithium battery cell 1 and a water-cooled casing 7.

A battery shell 8 is arranged on the outer side of the lithium battery monomer 1, a first electrode plate 2 and a second electrode plate 3 are arranged inside the battery shell 8, and the first electrode plate 2 and the second electrode plate 3 are both in a wave-shaped structure; the outer sides of the lithium battery single bodies 1 are fixedly connected through the combined connector 6, and the inner side of the water-cooling shell 7 is provided with a plurality of groups of lithium battery single bodies 1 connected through the combined connector.

Preferably, the battery case in the embodiment of the present invention is made of PVE material and has an elliptical shape.

Preferably, a separator is provided between the inner side of the battery case 8 and the first electrode tab in the embodiment of the present invention.

Preferably, the upper end of the water-cooled housing 7 in the embodiment of the present invention is fixed with the electric quantity display 5 through a bolt, and the electric quantity display 5 is respectively connected with each lithium battery cell through a connection line.

Preferably, the combined connector 6 in the embodiment of the present invention is provided with a cross-shaped support frame, and one lithium battery cell is fixed at each of four included corners of the cross-shaped support frame.

Preferably, the water-cooled casing in the embodiment of the utility model is provided with a plurality of assembled casing modules, and each casing module is internally provided with a water-cooled pipeline.

When the lithium battery is used, the number of the lithium battery monomers 1 is selected according to specific use requirements, and the lithium battery monomers are connected and fixed through the combined connector 6 and then wrapped through the water-cooling shell 7. The water-cooling shells 7 are arranged in a modularized mode, and water-cooling pipelines in the adjacent water-cooling shells 7 are communicated by splicing and assembling the water-cooling shells 7 at different positions. The electrode plate with the waves is arranged in the lithium battery monomer 1, so that the purpose of expanding the battery capacity can be achieved, and the contact area of the electrode plate can be increased to the greatest extent by the electrode plate with the waves, so that the battery capacity is increased; the modular design is adopted, a plurality of lithium battery monomers can be assembled together through the combined connector to form a battery pack, and the modular design can adapt to various different use requirements; through setting up water-cooling shell, can cool down the battery, effectively reduce the battery and generate heat.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention disclosed herein, which is within the spirit and principle of the present invention, should be covered by the present invention.

Claims

1. A large capacity winding type lithium battery, characterized in that the large capacity winding type lithium battery is provided with:

2. A large capacity coiled lithium battery as claimed in claim 1, wherein the battery case is a PVE material body, and has an oval shape.

3. A large capacity rolled lithium battery as claimed in claim 1, wherein a separator is provided between the inside of the battery case and the first electrode sheet.

4. A large capacity coiled lithium battery as claimed in claim 1, wherein the water-cooled casing has a charge indicator fixed to the upper end thereof by bolts, and the charge indicator is connected to each lithium battery cell through a connection line.

5. A large capacity coiled lithium battery as claimed in claim 1, wherein the combined connector is provided with a cross-shaped support frame, and a single lithium battery is fixed at each of four corners of the cross-shaped support frame.

6. A large capacity coiled lithium battery as claimed in claim 1, wherein the water-cooled casing is provided with a plurality of assembled case modules each having a water-cooled pipe provided therein.