CN210866364U - Explosion-proof small-size lithium cell - Google Patents

Abstract

The utility model discloses an explosion-proof small lithium battery, which comprises an electrolytic reactor, wherein the electrolytic reactor is arranged in a built-in box, the external part of the built-in box is covered with an outer protective shell, the outer protective shell comprises a top protective plate and side protective plates, the side protective plates are provided with four groups, the top protective plate is provided with two groups, a clamping cavity is formed between the inner cavity of the outer protective shell and the built-in box, the upper end and the lower end of the built-in box are provided with clamping grooves, heat conducting fins are arranged in the clamping grooves and are inserted on the clamping grooves, radiating fins are uniformly distributed on the surface of the heat conducting fins, the radiating fins and the heat conducting fins are of an integral structure, and radiating strip-shaped grooves are arranged on the top protective plate. Utilize heat dissipation bar groove to dispel the heat fast, prevent that the heat accumulation from producing the explosion, have explosion-proof effect.

Description

Explosion-proof small-size lithium cell

Technical Field

The utility model relates to a lithium cell, in particular to explosion-proof small-size lithium cell belongs to energy technical field.

Background

The lithium battery is a primary battery using lithium metal or lithium alloy as a negative electrode material and using a non-aqueous electrolyte solution, unlike a lithium ion battery, which is a rechargeable battery, and a lithium ion polymer battery. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Therefore, lithium batteries have not been used for a long time. With the development of microelectronic technology at the end of the twentieth century, miniaturized devices are increasing, and high requirements are made on power supplies. The lithium battery has entered into a large-scale practical stage therewith, and the lithium battery can roughly be divided into two types: lithium metal batteries and lithium ion batteries. Lithium metal batteries are generally non-rechargeable and contain lithium in a metallic state. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable.

The lithium cell can produce a large amount of heats in the use for lithium cell surface intensifies, if not in time dispel the heat, can make the inside inflation that takes place of lithium cell, and the lithium cell after the inflation can't continue to use, and the lithium cell of inflation can explode if continue to be in under the high temperature situation. Therefore, the explosion-proof small lithium battery is provided by improving the lithium battery.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof small-size lithium cell to solve the lithium cell that proposes in the above-mentioned background art in the use, can produce a large amount of heats, make lithium cell surface heat up, if not in time dispel the heat, can make the inside inflation that takes place of lithium cell, the lithium cell after the inflation can't continue to use, and the expanded lithium cell if continue to be in under the high temperature situation, can the problem of exploding.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an explosion-proof small-size lithium cell, includes the electrolytic reactor, the electrolytic reactor is placed in built-in box, built-in box outside is covered with outer protecting casing, and outer protecting casing includes top backplate and side guard plate, the side guard plate is equipped with four groups, top backplate is equipped with two sets ofly, form between the inner chamber of outer protecting casing and the built-in box and press from both sides the chamber, the upper and lower both ends of built-in box are equipped with the joint groove, the joint inslot is equipped with the conducting strip, the conducting strip is pegged graft on the joint groove, the uniform distribution of conducting strip has the fin, and fin and conducting strip be overall structure, the radiating strip groove has been seted up on the top backplate, and the radiating strip inslot is equipped with removable strip, removable strip is located the terminal surface that presss from both sides the intracavity and is connected.

As a preferred technical scheme of the utility model, mutually perpendicular sets up between the side guard plate, the top backplate is installed at the upper and lower both ends of four group's side guard plates, form sealed cuboid between top backplate and the side guard plate.

As a preferred technical scheme of the utility model, the heat dissipation strip-shaped groove sets up the multiunit side by side, and the shape and the heat dissipation strip-shaped groove phase-match of removable strip, the quantity of removable strip is the same with the quantity in heat dissipation strip-shaped groove.

As an optimized technical proposal of the utility model, the clamping cavity is filled with inert gas.

As a preferred technical scheme of the utility model, heat dissipation bar inslot wall is equipped with the rubber layer, and removable strip arranges heat dissipation bar inslot in and contacts with the rubber layer, the rubber layer comprises thin rubber pad.

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

1. the utility model relates to an explosion-proof small-size lithium cell sets up the conducting strip that can peg graft through the upper and lower surface at built-in box to set up the fin of erectting the direction on the conducting strip, and fin evenly distributed multiunit, utilize the fin to dispel the heat, when built-in box inflation, can drive the outside expansion of fin, thereby extrude heat dissipation strip groove with the removable strip of being connected with it, make heat dissipation strip groove open, utilize heat dissipation strip groove to dispel the heat fast, prevent that heat gathering from exploding, explosion-proof effect has.

2. The utility model relates to an explosion-proof small-size lithium cell through the built-in box outside setting up the electrolysis reactor outer protecting casing, utilizes the outer protecting casing fully to protect the lithium cell to pack inert gas in the double-layered intracavity that forms between built-in box and the outer protecting casing, make the environmental safety that the electrolysis reactor located, and be difficult for catching fire.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is the structural schematic diagram of the heat dissipation strip-shaped groove of the present invention.

In the figure: 1. an outer protective shell; 2. a detachable strip; 3. a heat-dissipating strip-shaped groove; 4. a conductive portion; 5. a side guard plate; 6. a top guard plate; 7. a built-in box; 8. a heat conductive sheet; 9. a heat sink; 10. a clamp cavity; 11. an electrolytic reactor; 12. an inert gas; 13. a rubber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides an explosion-proof small lithium battery, which comprises an electrolytic reactor 11, wherein the electrolytic reactor 11 is arranged in a built-in box 7, an outer protective shell 1 is covered outside the built-in box 7, the outer protective shell 1 comprises a top protective plate 6 and side protective plates 5, the side protective plates 5 are provided with four groups, the top protective plate 6 is provided with two groups, a clamping cavity 10 is formed between the inner cavity of the outer protective shell 1 and the built-in box 7, the upper end and the lower end of the built-in box 7 are provided with clamping grooves, heat conducting fins 8 are arranged in the clamping grooves, the heat conducting fins 8 are inserted in the clamping grooves, radiating fins 9 are uniformly distributed on the surface of the heat conducting fins 8, the radiating fins 9 and the heat conducting fins 8 are of an integral structure, radiating strip-shaped grooves 3 are arranged on the top protective plate 6, detachable strips 2 are arranged in the radiating strip-shaped grooves 3, the end surfaces of the, the side wall of the outer protecting shell 1 is provided with a conductive part 4.

Preferably, mutually perpendicular sets up between the side guard plate 5, top backplate 6 is installed at the upper and lower both ends of four groups of side guard plates 5, form sealed cuboid between top backplate 6 and the side guard plate 5 for top backplate 6 and side guard plate 5 are convenient for dismantle.

Preferably, heat dissipation strip-shaped groove 3 sets up the multiunit side by side, and the shape and the heat dissipation strip-shaped groove 3 phase-match of removable strip 2, the quantity of removable strip 2 is the same with the quantity in heat dissipation strip-shaped groove 3, through setting up multiunit heat dissipation strip-shaped groove 3 and removable strip 2 for heat dissipation strip-shaped groove 3 gets through the back, and outer protective housing 1 surface radiating effect is fast.

Preferably, the inert gas 12 is filled in the clamping cavity 10, so that the physical characteristics of the inert gas 12 can be utilized to ensure the ambient temperature in the clamping cavity 10.

Preferably, the inner wall of the heat dissipation strip-shaped groove 3 is provided with a rubber layer 13, the detachable strip 2 is arranged in the heat dissipation strip-shaped groove 3 and is in contact with the rubber layer 13, and the rubber layer 13 is composed of a thin rubber pad, so that the rubber layer 13 formed by the thin rubber pad is conveniently utilized to enable the heat dissipation strip-shaped groove 3 and the detachable strip 2 to be in sealing connection.

When the explosion-proof small-sized lithium battery is used, the electrolytic reactor 11 is arranged in the built-in box 7, then the built-in box 7 is arranged in the outer protective shell 1, the outer protective shell 1 is utilized to protect the electrolytic reactor 11 and the built-in box 7, the damage to the electrolytic reactor 11 and the built-in box 7 is reduced, meanwhile, the inert gas 12 is filled between the built-in box 7 and the outer protective shell 1, so that the electrolytic reactor 11 is stable in environment, and the ignition phenomenon is not easy to occur in a high-temperature environment, wherein, a plurality of groups of radiating fins 9 are evenly arranged on the radiating fins 8 by inserting the heat conducting fins 8 into the clamping grooves on the upper surface and the lower surface of the built-in box 7, when in use, good radiating parts are formed on the upper surface and the lower surface of the built-in box 7, so as to fully radiate the electrolytic reactor 11, and meanwhile, radiating strip-shaped grooves 3 are arranged on the upper top protective plate and the lower surface of the outer protective shell 1 at positions corresponding to, and set up removable strip 2 at heat dissipation strip inslot 3 internalization, and removable strip 2 and the contact of fin 9, when electrolytic reactor 11 takes place the high temperature situation, electrolytic reactor 11 can expand, thereby drive the upper and lower surface expansion of built-in box 7, can drive fin 9 outwards exaggerate when built-in box 7 is expanded, thereby extrude heat dissipation strip groove 3 with removable strip 2 that fin 9 is connected, make heat dissipation strip groove 3, interior nothing shelter from, thereby make double-layered chamber 10 between outer protecting sheathing 1 and the built-in box 7 and the outside intercommunication of outer protecting sheathing 1, make the inside high-temperature gas of double-layered chamber 10 quick give off the outside, quick radiating effect has, so as to prevent the lithium cell explosion.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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

Claims (5)

1. An explosion-proof small-sized lithium battery comprises an electrolytic reactor (11) and is characterized in that the electrolytic reactor (11) is arranged in a built-in box (7), an outer protective shell (1) is covered outside the built-in box (7), the outer protective shell (1) comprises a top protective plate (6) and side protective plates (5), the side protective plates (5) are provided with four groups, the top protective plate (6) is provided with two groups, a clamping cavity (10) is formed between the inner cavity of the outer protective shell (1) and the built-in box (7), clamping grooves are formed in the upper end and the lower end of the built-in box (7), heat conducting fins (8) are arranged in the clamping grooves in an inserted mode, radiating fins (9) are uniformly distributed on the surface of each heat conducting fin (8), the radiating fins (9) and the heat conducting fins (8) are of an integral structure, and radiating strip-shaped grooves (3) are formed in the top protective plate (6), and detachable strip (2) is arranged in the heat dissipation strip-shaped groove (3), the end face of the detachable strip (2) in the clamping cavity (10) is connected with the heat dissipation sheet (9), and the side wall of the outer protective shell (1) is provided with a conductive part (4).

2. An explosion-proof small lithium battery as claimed in claim 1, characterized in that: mutually perpendicular sets up between side guard plate (5), top backplate (6) are installed at the upper and lower both ends of four groups of side guard plate (5), form sealed cuboid between top backplate (6) and side guard plate (5).

3. An explosion-proof small lithium battery as claimed in claim 1, characterized in that: the heat dissipation strip-shaped groove (3) is provided with a plurality of groups side by side, the shape of the detachable strip (2) is matched with the heat dissipation strip-shaped groove (3), and the number of the detachable strip (2) is the same as that of the heat dissipation strip-shaped groove (3).

4. An explosion-proof small lithium battery as claimed in claim 1, characterized in that: and inert gas (12) is filled in the clamping cavity (10).

5. An explosion-proof small lithium battery as claimed in claim 1, characterized in that: the inner wall of the heat dissipation strip-shaped groove (3) is provided with a rubber layer (13), the detachable strip (2) is arranged in the heat dissipation strip-shaped groove (3) and is in contact with the rubber layer (13), and the rubber layer (13) is composed of thin rubber pads.

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