Lithium battery with explosion-proof flame-retardant structure

Abstract

The utility model belongs to the technical field of lithium batteries, and particularly relates to a lithium battery with an explosion-proof flame-retardant structure, which comprises a lithium battery alloy shell and a battery cover plate mounted on the surface of the lithium battery alloy shell, a pole is mounted on the surface of the battery cover plate, and an explosion-proof valve is mounted on the outer side wall of the lithium battery alloy shell; a fixing plate is installed on the inner wall of the lithium battery alloy shell, a buffer spring is connected to the inner wall of an opening of the fixing plate, the fixing plate is installed on the inner wall of the lithium battery alloy shell, then a battery module is placed in the lithium battery alloy shell, and when shaking occurs, the battery module is placed in the lithium battery alloy shell. At the moment, extrusion is generated between the outer side of the battery module and the protection plate, the buffer spring performs buffer compression and drives the rotating shaft to synchronously rotate, and at the moment, buffer protection is performed on shaking of the battery module, so that the phenomenon of short circuit caused by too large shaking amplitude is avoided, and the stability of electrical connection of the lithium battery is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery technical field, concretely relates to lithium battery with anti -explosion flame -retardant structure. BACKGROUND

[0002] Lithium battery with anti -explosion flame -retardant structure refers to in the design, manufacturing process of lithium battery, through the special material, structure and process, make it have the ability to prevent explosion and stop flame spread, mainly through setting safety valve, pressure release structure etc., when the internal pressure of battery is elevated to a certain degree due to overcharge, short circuit etc. abnormal situation, can release pressure in time, prevent the explosion of battery due to internal pressure is too high;

[0003] Specifically, after completing the assembly process of lithium battery, in view of the unique structural characteristics of lithium battery, when lithium battery is in use, once encounters the disturbance of external environment, such as bumping in the transportation process, vibration when the equipment is running etc., it is easy to cause the internal shaking of battery. This shaking will cause the relative movement between the module and the shell in the battery. Since the battery module is usually composed of multiple cells and corresponding connecting parts, protection circuit and other precision components, the frequent and disordered movement and shaking between the module and the shell may cause the loosening of the cell connection part in the module. This not only affects the electrical connection stability between the cells, reduces the overall charge and discharge performance of the battery, causes the capacity attenuation and charge and discharge efficiency reduction of the battery, but also may cause serious problems such as local short circuit. UTILITY MODEL CONTENTS

[0004] The utility model discloses a lithium battery with anti -explosion flame -retardant structure, aims at solving the above -mentioned equipment in prior art when using, when lithium battery is in use, once encounters the disturbance of external environment, such as bumping in the transportation process, vibration when the equipment is running etc., it is easy to cause the internal shaking of battery, and it is extremely possible to cause the loosening of the cell connection part in the module. This not only affects the electrical connection stability between the cells, reduces the overall charge and discharge performance of the battery, causes the capacity attenuation and charge and discharge efficiency reduction of the battery, but also may cause serious problems such as local short circuit.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: lithium battery with anti -explosion flame -retardant structure, including lithium battery alloy shell and the battery cover plate of installing on the surface of lithium battery alloy shell, the surface of battery cover plate is installed with the pole column, the outer side wall of lithium battery alloy shell is installed with the explosion -proof valve;

[0006] The inner wall of the lithium battery alloy shell is provided with a fixed plate, the open inner wall of the fixed plate is connected with a buffer spring, the other end of the buffer spring is connected with a protection plate, the side close to the buffer spring of the protection plate is connected with a first positioning rail plate, the surface of the first positioning rail plate is connected with a sliding sleeve, the side of the sliding sleeve is movably connected with a rotating rod, the other end of the rotating rod penetrates and is connected with a rotating shaft, the surface of the rotating shaft is connected with a linkage sleeve, the other side of the linkage sleeve is connected with a second positioning rail plate.

[0007] Preferably, the buffer spring and the protection plate form an elastic expansion structure, and the protection plate is made of alloy steel.

[0008] Preferably, the sliding sleeve and the first positioning rail plate form a sliding connection structure, and the two ends of the rotating rod are rotatably connected with the sliding sleeve and the linkage sleeve.

[0009] Preferably, two fixed plates are symmetrically arranged about the longitudinal central axis of the lithium battery alloy shell, and the explosion-proof valve is in communication with the inside of the lithium battery alloy shell.

[0010] Preferably, the lithium battery alloy shell is connected with a side plate, the open inner wall of the side plate is connected with a horizontal shaft, the surface of the horizontal shaft is movably connected with a shaft sleeve, and the surface of the shaft sleeve is connected with a handle.

[0011] Preferably, the inside of the handle is connected with a magnet, and the inner wall close to the magnet of the side plate is provided with an iron sheet.

[0012] Compared with the prior art, the lithium battery with the explosion-proof and flame-retardant structure has the advantages that:

[0013] The fixed plate is arranged on the inner wall of the lithium battery alloy shell, then the battery module is placed in the lithium battery alloy shell, when the battery module is shaken, extrusion is generated between the outside of the battery module and the protection plate, the buffer spring is compressed for buffering, the sliding sleeve and the linkage sleeve are slid along the first positioning rail plate and the second positioning rail plate, and the rotating shaft is synchronously rotated, the shaking of the battery module is buffered and protected, the short circuit caused by excessive shaking is avoided, and the stability of the lithium battery electrical connection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0015] Figure 1 It is the whole structure schematic diagram of lithium battery of the utility model;

[0016] Figure 2 It is the decomposition structure schematic diagram of lithium battery of the utility model;

[0017] Figure 3 It is the fixed plate installation structure schematic diagram of the utility model;

[0018] Figure 4 It is the protection plate connecting structure schematic diagram of the utility model;

[0019] Figure 5 It is the rotating rod connecting structure schematic diagram of the utility model;

[0020] Figure 6 It is the handle structure schematic diagram of the utility model.

[0021] In the drawing: 1, lithium battery alloy shell;2, battery cover plate;3, pole;4, explosion-proof valve;5, fixed plate;6, buffer spring;7, protection plate;8, first positioning rail plate;9, sliding sleeve;10, rotating rod;11, rotating shaft;12, linkage sleeve;13, second positioning rail plate;14, side plate;15, cross shaft;16, shaft sleeve;17, handle;18, magnet;19, iron sheet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-6 The utility model provides following technical scheme: lithium battery with explosion -proof flame -retardant structure, including lithium battery alloy shell 1 and install on the surface of lithium battery alloy shell 1 battery cover plate 2, the surface of battery cover plate 2 is installed with pole 3, the outer side wall of lithium battery alloy shell 1 is installed with explosion -proof valve 4;

[0024] The inner wall of the lithium battery alloy shell 1 is provided with a fixed plate 5, the opening inner wall of the fixed plate 5 is connected with a buffer spring 6, the other end of the buffer spring 6 is connected with a protection plate 7, the side close to the buffer spring 6 of the protection plate 7 is connected with a first positioning rail plate 8, the surface of the first positioning rail plate 8 is connected with a sliding sleeve 9, one side of the sliding sleeve 9 is movably connected with a rotating rod 10, the other end of the rotating rod 10 penetrates and is connected with a rotating shaft 11, the surface of the rotating shaft 11 is connected with a linkage sleeve 12, the other side of the linkage sleeve 12 is connected with a second positioning rail plate 13.

[0025] Preferably, the buffer spring 6 and the protection plate 7 constitute an elastic expansion structure, and the protection plate 7 is made of alloy steel.

[0026] In specific use, the lithium battery alloy shell 1 made of alloy steel improves the flame-retardant and explosion-proof effects of the lithium battery itself.

[0027] Preferably, the sliding sleeve 9 and the first positioning rail plate 8 constitute a sliding connection structure, and the two ends of the rotating rod 10 are rotationally connected with the sliding sleeve 9 and the linkage sleeve 12 respectively.

[0028] In specific use, the use of the sliding sleeve 9 and the linkage sleeve 12 facilitates the buffering of the protection plate 7.

[0029] Preferably, two fixed plates 5 are symmetrically arranged about the longitudinal central axis of the lithium battery alloy shell 1, and the explosion-proof valve 4 is connected with the inside of the lithium battery alloy shell 1.

[0030] In specific use, the use of the explosion-proof valve 4 facilitates the discharge of heat when the inside of the lithium battery alloy shell 1 is high temperature, and the specific model of the explosion-proof valve 4 is PBA4K-50.

[0031] Preferably, the outer side of the lithium battery alloy shell 1 is connected with a side plate 14, the opening inner wall of the side plate 14 is connected with a horizontal shaft 15, the surface of the horizontal shaft 15 is movably connected with a shaft sleeve 16, and the surface of the shaft sleeve 16 is connected with a handle 17.

[0032] In specific use, the use of the handle 17 facilitates the carrying of the lithium battery, and improves the convenience of use.

[0033] Preferably, the inner side of the handle 17 is connected with a magnet 18, and the inner wall close to the magnet 18 of the side plate 14 is provided with an iron sheet 19.

[0034] In specific use, the magnet 18 on the inner side of the handle 17 is magnetically connected with the iron sheet 19, thereby facilitating the magnetic attraction and stabilization of the handle 17, and ensuring the normal use of the lithium battery.

[0035] The utility model discloses a specific working principle when using: first through the fixed plate 5 is installed in lithium battery alloy shell 1 inner wall, after battery module is placed in the inside of lithium battery alloy shell 1, when appearing to shake, the extrusion between battery module outside and protection plate 7 is generated at this moment, at this moment, buffer spring 6 carries out buffer compression, simultaneously drives sliding sleeve 9 and linkage sleeve 12 along first positioning rail plate 8 and second positioning rail plate 13 sliding respectively, simultaneously drive pivot 11 synchronous rotation, at this moment, the shaking of battery module itself is protected by buffering, avoids the short circuit phenomenon caused by the shaking amplitude being too big, improves lithium battery electric property connection's stability, in addition, through handle 17 along horizontal shaft 15 of the inner wall of side plate 14 is rotated, and then conveniently drives shaft sleeve 16 to occur synchronous rotation, simultaneously magnet 18 and iron sheet 19 separate, thereby conveniently personnel carries out the handling of lithium battery, and simultaneously will not influence lithium battery self's use effect.

[0036] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical feature. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A lithium battery with an explosion-proof and flame-retardant structure, comprising a lithium battery alloy casing (1) and a battery cover plate (2) mounted on the surface of the lithium battery alloy casing (1), characterized in that: The battery cover (2) is equipped with a terminal post (3), and the outer wall of the lithium battery alloy shell (1) is equipped with an explosion-proof valve (4). A fixing plate (5) is installed on the inner wall of the lithium battery alloy shell (1). A buffer spring (6) is connected to the inner wall of the opening of the fixing plate (5). A protective plate (7) is connected to the other end of the buffer spring (6). A first positioning rail plate (8) is connected to the side of the protective plate (7) near the buffer spring (6). A sliding sleeve (9) is connected to the surface of the first positioning rail plate (8). A rotating rod (10) is movably connected to one side of the sliding sleeve (9). A rotating shaft (11) is connected through the other end of the rotating rod (10). A linkage sleeve (12) is connected to the surface of the rotating shaft (11). A second positioning rail plate (13) is connected to the other side of the linkage sleeve (12).

2. The lithium battery with an explosion-proof and flame-retardant structure according to claim 1, characterized in that: The buffer spring (6) and the protective plate (7) form an elastic telescopic structure, and the protective plate (7) is made of alloy steel.

3. The lithium battery with an explosion-proof and flame-retardant structure according to claim 1, characterized in that: The sliding sleeve (9) and the first positioning rail plate (8) form a sliding connection structure, and the two ends of the rotating rod (10) are rotatably connected to the sliding sleeve (9) and the linkage sleeve (12) respectively.

4. The lithium battery with an explosion-proof and flame-retardant structure according to claim 1, characterized in that: There are two fixing plates (5), and the two fixing plates (5) are symmetrically arranged about the longitudinal central axis of the lithium battery alloy shell (1). The explosion-proof valve (4) is connected to the inside of the lithium battery alloy shell (1).

5. The lithium battery with an explosion-proof and flame-retardant structure according to claim 1, characterized in that: The outer side of the lithium battery alloy shell (1) is connected to a side plate (14), the inner wall of the opening of the side plate (14) is connected to a horizontal shaft (15), the surface of the horizontal shaft (15) is movably connected to a bushing (16), and the surface of the bushing (16) is connected to a handle (17).

6. The lithium battery with an explosion-proof and flame-retardant structure according to claim 5, characterized in that: A magnet (18) is connected to the inside of the handle (17), and an iron plate (19) is installed on the inner wall of the side plate (14) near the magnet (18).

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