CN213150913U

CN213150913U - Explosion-proof device for lithium battery

Info

Publication number: CN213150913U
Application number: CN202022364039.5U
Authority: CN
Inventors: 戴丰; 杨璇
Original assignee: Wuxi Jinkun New Energy Technology Co ltd
Current assignee: Wuxi Jinkun New Energy Technology Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-05-07
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a lithium cell explosion-proof equipment, including explosion-proof shell, explosion-proof chamber has been seted up at explosion-proof shell's top, sliding connection has the mounting panel in the explosion-proof chamber, the lithium cell has been placed at the top of mounting panel, the top fixed mounting of lithium cell has anodal interface, the outside fixedly connected with connecting wire of anodal interface, the top fixed mounting of explosion-proof shell one side has the slide bar, the outside sliding connection of slide bar has explosion-proof cover, the slide opening has been seted up to one side of explosion-proof cover, explosion-proof cover passes through slide opening and slide bar sliding connection. The utility model relates to a lithium cell explosion-proof equipment technical field has solved the lithium cell and has had inside short circuit, overcharged scheduling problem, has solved its temperature and has increased gradually, causes the lithium cell explosion, causes great economic loss's problem.

Description

Explosion-proof device for lithium battery

Technical Field

The utility model relates to a lithium cell explosion-proof equipment technical field especially relates to a lithium cell explosion-proof equipment.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, and the application range of the lithium battery is wider and wider along with the development of the times, but the temperature of the lithium battery is likely to be gradually increased due to the problems of internal short circuit, overcharge and the like, even the explosion of the lithium battery is caused, and great economic loss is caused to users.

Therefore, we propose an explosion-proof device for lithium battery to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing a lithium battery explosion-proof device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an explosion-proof device of a lithium battery comprises an explosion-proof shell, wherein an explosion-proof cavity is formed in the top of the explosion-proof shell, a mounting plate is connected in the explosion-proof cavity in a sliding manner, a lithium battery is placed at the top of the mounting plate, an anode interface is fixedly mounted at the top of the lithium battery, a connecting lead is fixedly connected to the outer side of the anode interface, a slide rod is fixedly mounted at the top of one side of the explosion-proof shell, an explosion-proof cover is connected to the outer side of the slide rod in a sliding manner, a slide hole is formed in one side of the explosion-proof cover, the explosion-proof cover is connected with the slide rod in a sliding manner through the slide hole, a limiting seat is fixedly mounted at one end, away from the explosion-proof shell, of the slide rod, a spring is sleeved on the outer side of the slide rod, two ends of the spring respectively abut against, the explosion-proof shell is characterized in that one end, far away from the positive electrode interface, of the connecting wire is inserted into the voltage detector, a temperature sensor is fixedly mounted on one side of the top of the voltage detector, electromagnetic locks are fixedly mounted on the tops of the two sides of the explosion-proof shell, through holes are formed in the tops of the two sides of the explosion-proof shell, and the telescopic ends of the electromagnetic locks are inserted into the through holes.

Preferably, all fixed mounting has the grid board around the mounting panel top, and every the grid board offsets with the lithium cell.

Preferably, a protective shell is sleeved on the outer side of each electromagnetic lock.

Preferably, a plurality of damping springs are fixedly installed at the inner bottom of the explosion-proof cavity at equal intervals.

Preferably, a pulley is fixedly mounted on one side of the explosion-proof cover and abuts against the grid plate.

Preferably, the inner side wall and the inner bottom of the explosion-proof cavity and the bottom of the explosion-proof cover are coated with barrier explosion-proof materials.

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

1. the utility model discloses in, carry out real-time supervision to the lithium cell through temperature sensor and voltage detector, when the lithium cell high temperature and reach probably natural critical point, the electromagnetism hasp can be closed to make battery landing to explosion-proof intracavity and because explosion-proof apron passes through the spring and promotes, make it can be closed immediately when lithium cell landing to explosion-proof intracavity.

2. This use is novel, because damping spring is installed to the bottom in explosion-proof chamber, makes it can carry the lithium cell landing to explosion-proof intracavity at the mounting panel after, accessible damping spring carries out the shock attenuation, can prevent to cause the nature or the explosion of battery because vibrations are great.

Drawings

Fig. 1 is a schematic structural diagram of an explosion-proof device for a lithium battery provided by the present invention;

fig. 2 is a schematic cross-sectional structural view of an explosion-proof device for a lithium battery according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is an enlarged view at B in fig. 2.

In the figure: 1. an explosion-proof housing; 2. an explosion-proof cavity; 3. mounting a plate; 4. a lithium battery; 5. a positive electrode interface; 6. connecting a lead; 7. a slide bar; 8. an explosion-proof cover; 9. a slide hole; 10. a limiting seat; 11. a spring; 12. a voltage detector; 13. a temperature sensor; 14. an electromagnetic lock; 15. a through hole; 16. a grid plate; 17. a protective housing; 18. a pulley; 19. a damping spring; 20. and a controller.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, including an explosion-proof housing 1, the top of the explosion-proof housing 1 is provided with an explosion-proof cavity 2, the explosion-proof cavity 2 is slidably connected with a mounting plate 3, the top of the mounting plate 3 is provided with a lithium battery 4, the top of the lithium battery 4 is fixedly provided with an anode interface 5, the outer side of the anode interface 5 is fixedly connected with a connecting wire 6, the top of one side of the explosion-proof housing 1 is fixedly provided with a slide bar 7, the outer side of the slide bar 7 is slidably connected with an explosion-proof cover 8, one side of the explosion-proof cover 8 is provided with a slide hole 9, the explosion-proof cover 8 is slidably connected with the slide bar 7 through the slide hole 9, one end of the slide bar 7 far away from the explosion-proof housing 1 is fixedly provided with a limit seat 10, the outer side of the slide bar 7 is sleeved with a spring 11, and two ends of the spring 11 respectively, one end of the connecting wire 6, which is far away from the positive electrode interface 5, is inserted into the voltage detector 12, one side of the top of the voltage detector 12 is fixedly provided with the temperature sensor 13, the model of the temperature sensor 13 is CL-3000, the tops of the two sides of the explosion-proof shell 1 are both fixedly provided with the electromagnetic locks 14, the tops of the two sides of the explosion-proof shell 1 are both provided with the through holes 15, and the telescopic ends of the electromagnetic locks 14 are inserted into the through holes 15, when the lithium battery 4 is short-circuited or overcharged, the temperature in the lithium battery 4 can be rapidly increased, when the temperature of the lithium battery 4 is increased, the temperature sensor 13 can detect the temperature, when the temperature of the lithium battery 4 is higher than the set value of the detected temperature, the temperature sensor 13 can generate a signal to the controller 20 so as to start the electromagnetic locks 14 through the controller 20, thereby the telescopic ends of the electromagnetic locks 14 are, the mounting plate 3 with the lithium battery 4 slides down into the explosion-proof cavity 2, and the spring 11 can push the explosion-proof cover 8 to move due to the absence of the resistance of the lithium battery 4, so that the explosion-proof cover 8 covers the top of the explosion-proof shell 1 and seals the inside of the explosion-proof cavity 2, thereby preventing the explosion or the natural of the lithium battery, when the voltage of the lithium battery 4 rises, the current is transferred to the voltage detector 12 through the positive electrode terminal 5 and the connection wire 6, and when the voltage recognized by the voltage detector 12 is higher than a predetermined value, thereby activating, via the controller 20, the electromagnetic lock 14, causing the telescoping end of the electromagnetic lock 14 to retract, so that the electromagnetic lock 14 is not abutted against the mounting plate 3 any more, the mounting plate 3 with the lithium battery 4 slides down to the explosion-proof cavity 2, because the lithium battery 4 does not resist, the spring 11 can push the explosion-proof cover 8 to move, so that the explosion-proof cover 8 covers the top of the explosion-proof shell 1 and the inside of the explosion-proof cavity 2 is sealed.

Wherein, equal fixed mounting all around at mounting panel 3 top has grid 16, and every grid 16 offsets with lithium cell 4, through grid 16's installation, can make the better top of placing at mounting panel 3 of lithium cell 4 to prevent that lithium cell 4 from following mounting panel 3 landing to explosion-proof chamber 2 when inside, the problem that lithium cell 4 probably takes place to break away from.

Wherein, the protecting crust 17 has all been cup jointed in the outside of every electromagnetic lock 14, through protecting crust 17, can prevent that electromagnetic lock 14 from not being influenced by the dust when placing for a long time.

Wherein, the equidistant fixed mounting in interior bottom in explosion-proof chamber 2 has a plurality of damping spring 19, and through damping spring 19's installation, when can making mounting panel 3 take lithium cell 4 landing to explosion-proof chamber 2 is inside, convert kinetic energy into potential energy to prevent that lithium cell 4 from receiving the striking and violently exploding.

Wherein, one side fixed mounting of explosion-proof cover 8 has pulley 18, and pulley 18 offsets with grid plate 16, can reduce the frictional force of explosion-proof cover 8 and grid plate 16 through pulley 18 to make mounting panel 3 carry lithium cell 4 can not receive the influence of explosion-proof cover 8 when the landing.

Wherein, the inside wall of explosion-proof cavity 2, interior bottom and explosion-proof cover 8's bottom all cladding have the separation explosion-proof material, place the aluminium alloy explosion suppression material in the container after, because the mesh in the explosion suppression material stromatolite constitutes honeycomb structure, divide into a lot of very little "little compartments" to the container inner chamber, the propagation of flame can be suppressed to these compartments, simultaneously, this kind of honeycomb has fabulous thermal conductivity in unit volume, can absorb the most heat of burning release rapidly, make the final temperature greatly reduced after the combustion reaction, reactant gas's inflation degree reduces, the pressure value of container increases by a little.

The working principle is as follows: in the utility model, when the lithium battery 4 is short-circuited or overcharged, the temperature in the lithium battery 4 rises sharply, when the temperature of the lithium battery 4 rises, the temperature sensor 13 can detect the temperature, when the temperature of the lithium battery 4 is greater than the set value of the detection temperature, the temperature sensor 13 can generate a signal to the controller 20 to start the electromagnetic lock 14 through the controller 20, so that the telescopic end of the electromagnetic lock 14 is withdrawn, so that the electromagnetic lock 14 is not abutted against the mounting plate 3 any more, the mounting plate 3 with the lithium battery 4 slides into the explosion-proof cavity 2, because of no abutment of the lithium battery 4, the spring 11 can push the explosion-proof cover 8 to move, the explosion-proof cover 8 covers the top of the explosion-proof shell 1, and the explosion-proof cavity 2 is internally sealed, thereby preventing explosion or natural of the lithium battery, when the voltage of the lithium battery 4 rises, the current can be transmitted into the voltage detector 12 through the positive interface 5 and the connecting lead 6, when the voltage that voltage detector 12 discerned is higher than the predetermined value to start electromagnetic lock 14 through controller 20, thereby make the flexible end of electromagnetic lock 14 withdraw, thereby make electromagnetic lock 14 no longer offset with mounting panel 3, make mounting panel 3 take lithium cell 4 landing to explosion-proof chamber 2 in, owing to do not have the offset of lithium cell 4, make spring 11 can promote explosion-proof cover 8 and remove, make explosion-proof cover 8 cover at the top of explosion-proof housing 1, and make explosion-proof chamber 2 internal seal.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The explosion-proof device for the lithium battery comprises an explosion-proof shell (1) and is characterized in that an explosion-proof cavity (2) is formed in the top of the explosion-proof shell (1), a mounting plate (3) is connected in the explosion-proof cavity (2) in a sliding manner, the lithium battery (4) is placed at the top of the mounting plate (3), an anode interface (5) is fixedly mounted at the top of the lithium battery (4), a connecting lead (6) is fixedly connected to the outer side of the anode interface (5), a sliding rod (7) is fixedly mounted at the top of one side of the explosion-proof shell (1), an explosion-proof cover (8) is slidably connected to the outer side of the sliding rod (7), a sliding hole (9) is formed in one side of the explosion-proof cover (8), the explosion-proof cover (8) is slidably connected with the sliding rod (7) through the sliding hole (9), and a limiting seat (10) is fixedly mounted, the outer side of the sliding rod (7) is sleeved with a spring (11), two ends of the spring (11) are respectively abutted against one side of the limiting seat (10) opposite to one side of the explosion-proof cover (8), the top of the explosion-proof cover (8) is fixedly provided with a controller (20), the top of the controller (20) is fixedly provided with a voltage detector (12), one end of the connecting wire (6), far away from the positive electrode interface (5), is inserted into the voltage detector (12), one side of the top of the voltage detector (12) is fixedly provided with a temperature sensor (13), the tops of two sides of the explosion-proof shell (1) are fixedly provided with electromagnetic locks (14), the tops of two sides of the explosion-proof shell (1) are respectively provided with a through hole (15), and the telescopic ends of the electromagnetic locks (14) are inserted into the through holes (15).

2. The explosion-proof device for the lithium battery according to claim 1, wherein grid plates (16) are fixedly mounted around the top of the mounting plate (3), and each grid plate (16) abuts against the lithium battery (4).

3. The explosion-proof device for the lithium battery as claimed in claim 1, wherein a protective casing (17) is sleeved outside each electromagnetic lock (14).

4. The explosion-proof device for the lithium battery as claimed in claim 1, wherein a plurality of damping springs (19) are fixedly arranged at equal intervals at the inner bottom of the explosion-proof cavity (2).

5. The explosion-proof device for the lithium battery as claimed in claim 2, wherein a pulley (18) is fixedly installed at one side of the explosion-proof cover (8), and the pulley (18) is abutted against the grid plate (16).

6. The explosion-proof device for the lithium battery as claimed in claim 1, wherein the inner side wall, the inner bottom of the explosion-proof cavity (2) and the bottom of the explosion-proof cover (8) are all coated with barrier explosion-proof materials.