CN219436017U - Lithium battery with protective structure - Google Patents

Abstract

The utility model discloses a lithium battery with a protection structure, which comprises an outer shell, wherein a cover plate is arranged on the top end surface of the outer shell to realize integral protection, an inner shell is arranged in the outer shell to improve the protection capability of the lithium battery, an installation groove is formed in a penetrating way in the inner wall of the inner shell, a screw hole is formed in the bottom end surface of the installation groove, a connecting column penetrates through the inside of the installation groove, the longitudinal section of the connecting column is of a T-shaped structure, the connecting column is provided with a horizontal connecting part and a vertical limiting part, and a buffer spring is sleeved outside the connecting part of the connecting column and used for rebound buffering and position recovery in the later period of buffering; through inner shell, spliced pole and buffer spring of design, can form secondary protection structure in the inside of shell, effectively promote lithium cell's protective capability, in receiving external impact, can enough realize buffering, can reduce the puncture phenomenon that sharp object caused to the power pack again, promote lithium cell's security performance.

Description

Lithium battery with protective structure

Technical Field

The utility model belongs to the technical field of lithium batteries, and particularly relates to a lithium battery with a protection structure.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as positive/negative electrode materials and uses nonaqueous electrolyte solution, and has very high requirements on environment due to the very active chemical characteristics of the lithium metal, so the lithium battery has become the mainstream along with the development of scientific technology

The current lithium cell is when using, only protect through the individual layer shell of self, does not have other protective structure again, therefore when receiving the impact, holistic protection is lower, in case the object of impact is comparatively sharp-pointed, still can insert inside the shell and cause the puncture to the battery to lead to a series of safety problems such as explosion to and current in the installation to inside group battery, receive the influence of specification size, probably have the unstable phenomenon of installation, exist modifiable space in the consequently in-service use.

Disclosure of Invention

The utility model aims to provide a lithium battery with a protection structure, so as to solve the problems that the existing lithium battery provided in the background art is weak in protection capability and the internal battery pack is poor in installation stability due to specification problems during installation.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a lithium battery with protective structure, includes the shell, the apron is installed to the top face of shell, realizes holistic protection, the inside of shell is provided with the inner shell, promotes the protective capability of lithium battery, the inner wall of inner shell link up and has seted up the mounting groove, the bottom face of mounting groove is last to be seted up the screw, the inside of mounting groove is run through there is the spliced pole, the longitudinal section of spliced pole is "T" type structure, and the spliced pole has horizontal connecting portion and vertical limit part the outside cover of spliced pole connecting portion is equipped with buffer spring for rebound buffering to and the position recovery in buffering later stage, buffer spring's both ends offset with the surface of inner shell and the inner wall of shell respectively, the limiting hole that supplies spliced pole connecting portion one end card to go into is seted up to the inner wall of shell; the other end surface of the connecting column connecting part is provided with threads, so that the installation stability is guaranteed, and the connecting column connecting part is fixed with the threads of the screw hole.

Preferably, the terminal surface of spliced pole spacing portion with the inner wall of inner shell offsets, realizes spacingly, buffer spring's external diameter is less than the internal diameter of mounting groove can conveniently realize earlier stage equipment and installation still offer the groove of downwardly extending on the bottom end face of screw, provide deformability.

Preferably, the equidistance is provided with spacing subassembly on the inside bottom surface of inner shell, and every group of spacing subassembly is including fixing the fixed plate on the inner shell bottom surface to and the fly leaf of setting in fixed plate one side for laminate with the power pack, the medial surface of fly leaf is fixed with and supports the post, the medial surface of fixed plate is fixed with the urceolus, support the post and insert the inside to the urceolus support and still be provided with the extension spring between post and the urceolus.

Preferably, the bottom end surface of the movable plate is in sliding fit with the inner bottom end surface of the inner shell, so that the power supply unit is clamped, and the heights of the movable plate and the fixed plate are equal.

Preferably, a power supply group is arranged between every two adjacent limiting assemblies, and a plurality of power supply groups are connected through wires to form a lithium battery block.

Preferably, a panel is installed on the top end face of the cover plate and used for realizing various operations, a power supply and a short circuit indicator lamp are arranged on the top end face of the panel, and a power supply output port is also arranged on the panel.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the inner shell, the connecting column and the buffer spring of the design, a secondary protection structure can be formed in the outer shell, the protection capability of the lithium battery is effectively improved, the buffering can be realized, the puncture phenomenon of a sharp object on a power supply unit can be reduced, and the safety performance of the lithium battery is improved when the lithium battery is subjected to external impact;

2. the fly leaf and the extension spring of design can be in the installation to the power pack, carries out spacingly with the power pack, promotes the stability in the installation, avoids leading to the installation to appear rocking phenomenon because of the specification difference of inner shell, power pack, separates the installation simultaneously, also can avoid the heat transfer between the adjacent power pack, promotes life and safety in utilization.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the connection of the inner shell and the outer shell of the present utility model;

FIG. 3 is a schematic view showing the connection of the mounting groove and the screw hole;

FIG. 4 is a cross-sectional view of the inner housing of the present utility model;

FIG. 5 is a cross-sectional view showing the connection of the movable plate and the fixed plate according to the present utility model;

fig. 6 is a circuit diagram of the present utility model.

In the figure: 1. a cover plate; 2. a panel; 3. a connecting column; 4. an inner case; 5. a housing; 6. a mounting groove; 7. a buffer spring; 8. a limiting hole; 9. a screw hole; 10. a movable plate; 11. a fixing plate; 12. a telescopic spring; 13. abutting the column; 14. an outer cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 6, the present utility model provides a technical solution: the utility model provides a lithium battery with protective structure, including shell 5, cover plate 1 is installed to the top face of shell 5, the inside of shell 5 is provided with inner shell 4, promote the protective capability, the inner wall of inner shell 4 has link up and has seted up mounting groove 6, set up screw 9 on the bottom face of mounting groove 6, it has spliced pole 3 to run through in the inside of mounting groove 6, the longitudinal section of spliced pole 3 is "T" type structure, and spliced pole 3 has horizontal connecting portion and vertical spacing portion, the cover is equipped with buffer spring 7 in the outside of spliced pole 3 connecting portion, through the inner shell 4 of design, spliced pole 3 and buffer spring 7, can form secondary protective structure in the inside of shell 5, effectively promote the protective capability of lithium battery, in receiving outside impact, can realize buffering, can reduce the puncture phenomenon that sharp object led to the fact to the power pack again, promote the security performance of lithium battery, the both ends of buffer spring 7 respectively with the surface of inner shell 4 and the inner wall of shell 5 offset, the inner wall of shell 5 has and supplies the spacing hole 8 that spliced pole 3 connecting portion one end card was gone into; the other end surface of the connecting part of the connecting column 3 is provided with threads and is fixed with threads of the screw hole 9, the end face of the limiting part of the connecting column 3 abuts against the inner wall of the inner shell 4, limiting installation is achieved, the outer diameter of the buffer spring 7 is smaller than the inner diameter of the installation groove 6, and a groove extending downwards is further formed in the bottom end face of the screw hole 9.

In this embodiment, preferably, the equidistance is provided with spacing subassembly on the inside bottom end face of inner shell 4, every group of spacing subassembly is including fixing fixed plate 11 on the bottom end face of inner shell 4, and set up fly leaf 10 in fixed plate 11 one side, the medial surface of fly leaf 10 is fixed with and supports post 13, fly leaf 10 and the telescopic spring 12 of design, can carry out spacing with the power pack in the installation to the power pack, stability in the promotion installation, avoid leading to the installation to appear rocking because of the specification difference of inner shell 4, power pack, separate the installation simultaneously, also can avoid the heat transfer between the adjacent power pack, promote life and safety in utilization, the medial surface of fixed plate 11 is fixed with urceolus 14, support post 13 inserts the inside of urceolus 14, still be provided with telescopic spring 12 between support post 13 and urceolus 14, the bottom face of fly leaf 10 slides the laminating with the inside bottom end face of inner shell 4, the convenience is removed, fly leaf 10 is equal with the height of fixed plate 11.

In this embodiment, preferably, a power supply unit is disposed between every two adjacent limiting assemblies, a plurality of power supply units are connected through wires to form a lithium battery block, a panel 2 is mounted on the top end face of the cover plate 1 and used for controlling the whole lithium battery, a power supply and a short circuit indicator lamp are disposed on the top end face of the panel 2, and a power supply output port is further disposed on the panel 2.

The working principle and the using flow of the utility model are as follows: in the installation of the utility model, the buffer spring 7 is sleeved on the connecting column 3, then the connecting part of the connecting column 3 is inserted from the installation groove 6, the inner diameter of the installation groove 6 is larger than the outer diameter of the buffer spring 7, so that the buffer spring 7 is convenient to insert together, then the connecting column 3 moves towards the direction of the screw hole 9, and the buffer spring 7 is in a compressed state when the connecting column 3 is inserted into the screw hole 9, the screw hole 9 deforms through the groove formed in the bottom part to increase the inner diameter for the connecting column 3 to be clamped in, after the connecting column 3 is clamped in, the limiting part of the connecting column 3 is screwed until the screw thread on the connecting part of the connecting column 3 is connected with the inner wall of the screw hole 9, at the moment, one end of the connecting part of the connecting column 3 is inserted into the limiting hole 8, then the power pack is installed inside the inner shell 4 and is placed between every two limiting components, in the placing process, one side of the bottom of the power pack is clung to the fixed plate 11, at the moment, the movable plate 10 on the other limiting component moves inside the outer barrel 14 through the rebound of the telescopic spring 12 and can be clung to the power pack to limit the power pack, so that the limit of the power pack is completed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. Lithium battery with protective structure, including shell (5), apron (1) are installed on top face of shell (5), its characterized in that: the inner part of the outer shell (5) is provided with an inner shell (4), the inner wall of the inner shell (4) is communicated with a mounting groove (6), the bottom end surface of the mounting groove (6) is provided with a screw hole (9), the inside of the mounting groove (6) is communicated with a connecting column (3), the longitudinal section of the connecting column (3) is of a T-shaped structure, the connecting column (3) is provided with a horizontal connecting part and a vertical limiting part, the outer side of the connecting part of the connecting column (3) is sleeved with a buffer spring (7), two ends of the buffer spring (7) are respectively propped against the outer surface of the inner shell (4) and the inner wall of the outer shell (5), and the inner wall of the outer shell (5) is provided with a limiting hole (8) for clamping one end of the connecting part of the connecting column (3); the other end surface of the connecting part of the connecting column (3) is provided with threads and is fixed with the screw hole (9) through threads.

2. The lithium battery with a protective structure according to claim 1, wherein: the end face of the limiting part of the connecting column (3) is propped against the inner wall of the inner shell (4), the outer diameter of the buffer spring (7) is smaller than the inner diameter of the mounting groove (6), and a groove extending downwards is formed in the bottom end face of the screw hole (9).

3. The lithium battery with a protective structure according to claim 1, wherein: the inner shell is characterized in that limit components are arranged on the inner bottom end face of the inner shell (4) at equal intervals, each group of limit components comprises a fixed plate (11) fixed on the bottom end face of the inner shell (4) and a movable plate (10) arranged on one side of the fixed plate (11), a supporting column (13) is fixed on the inner side face of the movable plate (10), an outer cylinder (14) is fixed on the inner side face of the fixed plate (11), the supporting column (13) is inserted into the outer cylinder (14), and an expansion spring (12) is further arranged between the supporting column (13) and the outer cylinder (14).

4. A lithium battery with a protective structure according to claim 3, characterized in that: the bottom end surface of the movable plate (10) is in sliding fit with the inner bottom end surface of the inner shell (4), and the heights of the movable plate (10) and the fixed plate (11) are equal.

5. The lithium battery with a protective structure according to claim 4, wherein: every two adjacent spacing assemblies are provided with the power pack between, a plurality of power packs pass through the electric wire connection and constitute lithium cell piece.

6. The lithium battery with a protective structure according to claim 1, wherein: the panel (2) is installed on the top end face of the cover plate (1), a power supply and a short circuit indicator lamp are arranged on the top end face of the panel (2), and a power supply output port is further arranged on the panel (2).