Double-steel-shell extending device

Abstract

The utility model discloses a double steel shell extension device which comprises a battery cell main body and a steel shell wrapped outside the battery cell main body, a part of the steel shell is wrapped outside the battery cell main body, the top of the steel shell extends upwards, and a cavity with a top opening is formed inside the steel shell. And the top of the battery cell main body is positioned at the bottom of the cavity of the steel shell to form a base of the cavity. The utility model has the beneficial effects that through the steel shell wrapped outside the battery cell main body and the extension piece on the steel shell, double protection on the battery cell main body is realized, and meanwhile, a structure needing to be butted can be directly placed in the cavity of the extension piece during subsequent processing and use, so that quick installation can be realized, and the battery cell is convenient to use. And the extension part at the top of the steel shell is electrically connected with a connected device, so that the battery cell main body can be conveniently and stably connected with the device without additional processing procedures.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric core, concretely relates to a double steel shell extension device. BACKGROUND

[0002] The electric core of lithium battery is a rocking chair type battery, which stores / releases energy by reciprocating movement of lithium ions between the positive electrode and the negative electrode, the original electric core is only wrapped by a shell outside, which leads to the electric core to be damaged easily during use, and the electric core is inconvenient to connect other structures during use, which is very inconvenient during use, therefore, a double steel shell extension device is needed to solve the above problems. SUMMARY

[0003] The utility model aims at overcoming the insufficient of the prior art, and provides a double steel shell extension device.

[0004] It includes electric core body, steel shell wrapped in the electric core body outside, the steel shell part area is wrapped in the electric core body outside, the steel shell top extends upward and forms the cavity with top opening inside, the top of the electric core body is located at the bottom of the steel shell cavity, and forms the base of the cavity.

[0005] Further, the steel shell top extends upward and is provided as an extension piece.

[0006] Further, the inner wall of the steel shell is recessed inward at the position of the top of the electric core body, and forms an inner ring, and the bottom of the inner ring is attached to the electric core body.

[0007] Further, the electric core body includes an electric core shell attached to the steel shell and an electric core arranged in the electric core shell.

[0008] Further, an inner shell is clamped at the top position inside the electric core shell, and the inner shell extends upward inside the cavity.

[0009] Further, the inner shell is provided as the positive electrode of the electric core, and the extension piece of the steel shell is provided as the negative electrode of the electric core.

[0010] Compared with the prior art, the utility model has the advantages that the steel shell wrapped outside the electric core body and the extension piece on the steel shell realize double protection of the electric core body, and in subsequent processing and use, the structure to be connected can be directly placed inside the cavity of the extension piece, which can be quickly installed, the extension piece part of the top of the steel shell is electrically connected with the connected device, which ensures that the electric core body is conveniently and stably connected with the device without additional processing procedures. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1It is the whole explosion three-dimensional structure schematic diagram in the utility model.

[0012] Figure 2 It is the whole front cross-section structure schematic diagram in the utility model.

[0013] In the drawing,

[0014] 1, the electric core main body;

[0015] 2, the steel shell;

[0016] 3, the inner shell;

[0017] 4, extension piece. CONCRETE EMBODIMENT

[0018] Now will be detailed with reference to the specific embodiments of the utility model, in the drawing example of the utility model is illustrated. Although will be described with reference to the specific embodiments of the utility model, but will understand, not want to limit the utility model to the described embodiment. On the contrary, want to cover by the appended claims defined in the spirit and scope of the utility model includes the alteration, modification and equivalents. It should be noted that the method steps described here can be realized by any function block or function arrangement, and any function block or function arrangement can be realized as a physical entity or a logical entity, or a combination of both.

[0019] In order to make those skilled in the art better understand the utility model, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0020] Note: the example to be introduced next is only a specific example, and not as a limitation on the embodiment of the utility model must be as follows specific steps, values, conditions, data, order, etc. Those skilled in the art can use the concept of the utility model to construct more embodiments not mentioned in the specification by reading the specification.

[0021] The electric core of lithium battery is a rocking chair type battery, which relies on the reciprocating motion of lithium ions between the positive and negative electrodes to store / release energy. The original electric core is only wrapped with a shell outside the electric core, which leads to the electric core being easily damaged during use. In addition, the electric core is not convenient to connect other structures during use, which is very inconvenient during use. Therefore, a double steel shell extension device is needed to solve the above problems.

[0022] In order to solve the above-mentioned problems of the electric core, the utility model provides a double steel shell extension device.

[0023] Please refer to Figure 1 And Figure 2, including the battery cell body 1, the steel shell 2 wrapped outside the battery cell body 1, the steel shell 2 wraps part of the area outside the battery cell body 1, the steel shell 2 top extends upward and forms a cavity with an open top, the battery cell body 1 top is located at the bottom of the steel shell 2 cavity, forming the bottom of the cavity.

[0024] As shown in Figure 1 and Figure 2 , the structure of the steel shell 2 follows the design of the structure of the battery cell body 1, such as a cylinder, a square column, the overall structure of the battery cell body 1 in this application adopts a cylindrical structure, the structure of the steel shell 2 is also designed as a cylindrical structure, one end of the steel shell 2 is open, the other end is closed, the steel shell 2 is wrapped outside the battery cell body 1, and the bottom of the battery cell body 1 is attached to the closed end of the steel shell 2, the open end of the steel shell 2 extends upward, so that the top of the steel shell 2 inside forms a cavity, which is convenient for other devices to be placed inside the steel shell 2 and connected with the battery cell body 1, and at the same time, the top of the battery cell body 1 forms the bottom of the cavity.

[0025] Please continue to refer to Figure 1 and Figure 2 , the inner wall of the steel shell 2 is recessed inward at the position of the top of the battery cell body 1, and forms an inner ring, the bottom of the inner ring is attached to the battery cell body 1.

[0026] As shown in Figure 1 and Figure 2 , since the steel shell 2 is in a cylindrical structure, the inside of the steel shell 2 is recessed towards the center point, the outer recess and the inner convex, so that the convex structure forms an inner ring, the bottom of the inner ring is attached to the top of the battery cell body 1, and the battery cell body 1 is prevented from falling off from the inside of the steel shell 2.

[0027] Please continue to refer to Figure 1 and Figure 2 , the battery cell body 1 includes a battery cell shell attached to the steel shell 2 and a battery cell arranged inside the battery cell shell, an inner shell 3 is connected at the top of the inside of the battery cell shell, and the top of the inner shell 3 extends inside the cavity.

[0028] As shown in Figure 1 and Figure 2 , the battery cell body 1 is mainly composed of a battery cell and a battery cell shell, the battery cell shell wraps the battery cell, and the top of the battery cell shell is a positive and negative electrode connector, the top of the battery cell shell is in the form of an inner buckle ring structure, the outer edge of the inner buckle is connected to the inner buckle of the top of the battery cell shell, and the top of the inner shell 33 extends upward and enters the inside of the cavity of the steel shell 2 to protect the battery cell body 1.

[0029] Please continue to refer to Figure 1 and Figure 2 , the upward extending part of the top of the steel shell 2 is provided as an extension 4, the inner shell 3 is provided as a positive electrode of the battery cell, and the extension 4 of the steel shell 2 is provided as a negative electrode of the battery cell.

[0030] As Figure 1 and Figure 2 As shown in the figure, the device can form a normal circuit structure with the battery cell after being inserted inside the steel shell 2.

[0031] In use of the utility model, the steel shell 2 is wrapped outside the battery cell main body 1, providing double protection, and the extension 4 extending upwards of the steel shell 2 can fix the device connected to the battery cell main body 1, realizing the effect of protection and convenient connection.

[0032] In the description of the utility model, it needs to be explained that the position or location relationship indicated by the terms "upper", "lower" and the like is based on the position or location relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] It needs to be explained that in the utility model, relationship terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0034] The above is only a specific embodiment of the utility model, enabling those skilled in the art to understand or implement the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features of the utility model.

Claims

1. A double steel case extending device comprising an electric core body (1), a steel case (2) wrapped outside the electric core body (1), characterized in that, The steel shell (2) partially wraps the outside of the battery cell body (1), the top of the steel shell (2) extends upward and forms a cavity with an open top, the top of the battery cell body (1) is located at the bottom of the cavity of the steel shell (2) and forms the base of the cavity; the upward extending part of the top of the steel shell (2) is provided as an extension (4); the inner wall of the steel shell (2) is inwardly recessed at the position of the top of the battery cell body (1) and forms an inner ring, the bottom of the inner ring is in contact with the battery cell body (1); the battery cell body (1) comprises a battery cell shell in contact with the steel shell (2) and a battery cell located in the battery cell shell.

2. A dual steel shell extension device as claimed in claim 1, wherein, An inner shell (3) is clamped at the top position inside the battery cell shell, the top of the inner shell (3) extends upward inside the cavity.

3. A dual shell extension device as claimed in claim 2, wherein, The inner shell (3) is provided as the positive electrode of the battery cell, and the extension (4) of the steel shell (2) is provided as the negative electrode of the battery cell.

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