CN212033075U

CN212033075U - Lithium battery with charge explosion-proof function

Info

Publication number: CN212033075U
Application number: CN202020734709.5U
Authority: CN
Inventors: 刘南; 倪献聪
Original assignee: Shenzhen Jinbaidi New Energy Co ltd
Current assignee: Shenzhen Jinbaidi New Energy Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-11-27
Anticipated expiration: 2030-05-07

Abstract

The utility model discloses a lithium cell with explosion-proof function charges, including the box that is used for depositing the lithium cell, the articulated lid that is equipped with in top of box, the box comprises shell body and interior casing, be equipped with the back up coat between shell body and the wind casing, the back up coat comprises the sheetmetal of a plurality of blocks of each other, be equipped with the screen cloth casing in the interior casing, the lithium cell is located in the screen cloth casing, be equipped with fire extinguishing pipe and temperature-sensing ware on the inner wall of screen cloth casing, fire extinguishing agent has been stored in the fire extinguishing pipe, be equipped with audible-visual annunciator, air vent and lock body on the lid, be equipped with on the box with lock body matched with closure portion, temperature-sensing ware and audible-visual. The utility model has the advantages that: can provide the protection when lithium cell charges, reduce the risk of burning explosion on fire, after burning on fire, can provide warning function for people.

Description

Lithium battery with charge explosion-proof function

Technical Field

The utility model relates to a lithium battery charging protection technical field specifically indicates a lithium cell with explosion-proof function charges.

Background

Lithium batteries are generally classified into lithium metal batteries and lithium ion batteries, wherein the lithium ion batteries are rechargeable and have high energy density, and the application thereof is more and more extensive. The electrolyte in the lithium ion battery is flammable liquid, the electrode is flammable material, the lithium battery generates out-of-control heat under the conditions of overcharge, short circuit, overheating, puncture or collision and the like, and the lithium battery is easy to catch fire and even explode, so the safety of the lithium ion battery is the bottleneck for inhibiting the development of the lithium ion battery and related industries.

At present, a lithium battery is generally adopted as a power supply battery of an electric vehicle, the lithium battery provides convenience for citizens to go out and brings potential safety hazards, and the fire safety protection of the electric vehicle battery in China has no feasible unified standard. The battery protection system in the prior art mostly collects corresponding signals by adopting various sensors such as temperature, smoke, current and voltage, and then monitors the battery, and starts the fire extinguishing device to extinguish the fire of the battery when the fire occurs in the battery. The fire extinguishing agent used comprises dry powder, aerosol, carbon dioxide, nitrogen, carbon tetrachloride and the like. However, the lithium battery is accompanied by violent chemical reaction inside the lithium battery during combustion, stored electric energy is finally converted into heat energy to be released, a large amount of heat and combustible gas are generated, the lithium battery has extremely strong afterburning performance, and the fire extinguishing device using the conventional fire extinguishing agents such as dry powder, aerosol, carbon dioxide, nitrogen, carbon tetrachloride and the like can only be used for extinguishing the primary fire of the lithium battery and can not prevent the afterburning of the lithium battery, even if the fire extinguishing mode of vacuumizing and isolating oxygen is adopted, the afterburning of the lithium battery can not be avoided after the supplement air returns to the normal pressure.

In addition, the lithium battery is easy to burn and explode in the high-temperature environment of fire, great difficulty is brought to fire extinguishing rescue and field disposal, and the prior art does not relate to the protection of the lithium battery against external fire sources.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above difficulty, provide one kind can be when lithium cell charging, provide the protection, reduce the risk of burning explosion on fire, after burning on fire, can provide the lithium cell that has the explosion-proof function of charging of warning function for people.

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a lithium cell with explosion-proof function charges, is including the box that is used for depositing the lithium cell, the articulated lid that is equipped with in top of box, the box comprises shell body and interior casing, be equipped with the back up coat between shell body and the wind casing, the back up coat comprises the sheetmetal of a plurality of blocks of each other, be equipped with screen shell in the interior casing, the lithium cell is located in the screen shell, be equipped with fire extinguishing pipe and temperature-sensing ware on screen shell's the inner wall, fire extinguishing pipe has been stored to put out a fire, be equipped with audible-visual annunciator, air vent and lock body on the lid, be equipped with on the box with lock body matched with closure portion, temperature-sensing ware and.

The fire extinguishing pipe is made of rubber materials and melts when encountering fire.

As an improvement, one side of the metal sheet is provided with a plurality of notches, and the notches are mutually clamped.

As an improvement, a charging connector is arranged on the box body.

As a refinement, the outer housing is made of a rubber material and the inner housing is made of a metal material.

As an improvement, a top cover is arranged on the vent hole, and the top cover and the vent hole are in interference fit.

As an improvement, the fire extinguishing tube stores a fire extinguishing agent.

Compared with the prior art, the utility model the advantage lie in: the shell of the box body is made of rubber materials, so that the vibration of the lithium battery in the using and moving processes can be reduced, the reinforcing layer is formed by mutually clamping a plurality of metal sheets with notches, the whole box body can be firmer, the harm to people caused by the fire and explosion of the lithium battery can be reduced, the fire extinguishing pipe is arranged in the screen shell, the fire extinguishing agent is arranged in the fire extinguishing pipe, the fire extinguishing agent can fill the whole box body from gaps of the screen shell when the lithium battery is on fire, the temperature sensor is matched with the audible and visual alarm to prevent the lithium battery from further burning, warning people, keeping people away from the lithium battery, reducing harm to people, matching the vent hole with the top cover, the pressure of the box body can be reduced when the lithium battery is ignited to burn and expand, and the lithium battery is prevented from exploding.

Drawings

Fig. 1 is a schematic view of a cross-sectional state structure of a lithium battery with a charging explosion-proof function according to the present invention.

Fig. 2 is a schematic diagram of a sectional state structure of a lithium battery with a charging explosion-proof function.

Fig. 3 is a schematic structural diagram of the lithium battery with the function of explosion protection during charging according to the present invention.

As shown in the figure: 1. lithium cell, 2, box, 2.1, shell body, 2.2, interior casing, 3, lid, 4, back up coat, 4.1, sheetmetal, 5, screen cloth casing, 6, fire extinguishing pipe, 6.1, fire extinguishing agent, 7, temperature-sensing ware, 8, audible-visual annunciator, 9, air vent, 9.1, top cap, 10, lock body, 10.1, closure portion, 11, breach, 12, the joint that charges.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Combine attached 1-3, a lithium cell with explosion-proof function of charging, including the box 2 that is used for depositing lithium cell 1, the articulated lid 3 that is equipped with in top of box 2, box 2 comprises shell body 2.1 and interior casing 2.2, be equipped with back up coat 4 between shell body 2.1 and the interior casing 2.2, back up coat 4 comprises the sheetmetal 4.1 of a plurality of block of each other, be equipped with screen shell 5 in interior casing 2.2, lithium cell 1 locates in screen shell 5, be equipped with fire extinguishing pipe 6 and temperature-sensing ware 7 on the inner wall of screen shell 5, be equipped with audible-visual annunciator 8, air vent 9 and lock body 10 on the lid 3, be equipped with on the box 2 with lock body 10 matched with closure portion 10.1, temperature-sensing ware 7 and audible-visual annunciator 8 electric connection.

One side of the metal sheet 4.1 is provided with a plurality of notches 11, and the notches 11 are mutually clamped. And a charging connector 12 is arranged on the box body 2. The outer housing 2.1 is made of a rubber material and the inner housing 2.2 is made of a metal material. Be equipped with top cap 9.1 on the air vent 9, top cap 9.1 sets up with air vent 9 interference fit. The fire extinguishing pipe 6 is internally stored with a fire extinguishing agent 6.1.

The utility model discloses a theory of operation: when lithium cell 1 burns on fire, 6 outer walls of fire extinguishing pipe are burnt by fire and melted, and 6.1 of fire extinguishing agent flows out from 6 interior of fire extinguishing pipe, fills whole box 2 from the gap between screen cloth casing 5, and it is fire-retardant to cool down lithium cell 1, and when the pressure in box 2 was too big, top cap 9.1 can be followed air vent 9 and upsprings, and the pressure of 2 in the release box prevents the explosion.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a lithium cell with explosion-proof function charges which characterized in that: including the box that is used for depositing the lithium cell, the articulated lid that is equipped with in top of box, the box comprises shell body and interior casing, be equipped with the back up coat between shell body and the wind casing, the back up coat comprises the sheetmetal of a plurality of blocks of each other, be equipped with screen cloth casing in the interior casing, the lithium cell is located in the screen cloth casing, be equipped with fire extinguishing pipe and temperature-sensing ware on screen cloth casing's the inner wall, fire extinguishing agent has been stored in the fire extinguishing pipe, be equipped with audible-visual annunciator, air vent and lock body on the lid, be equipped with on the box with lock body matched with closure portion, temperature-sensing ware and audible-.

2. The lithium battery with the function of preventing charge explosion as claimed in claim 1, wherein: one side of the metal sheet is provided with a plurality of notches which are mutually clamped.

3. The lithium battery with the function of preventing charge explosion as claimed in claim 1, wherein: the box body is provided with a charging connector.

4. The lithium battery with the function of preventing charge explosion as claimed in claim 1, wherein: the outer shell is made of a rubber material, and the inner shell is made of a metal material.

5. The lithium battery with the function of preventing charge explosion as claimed in claim 1, wherein: and a top cover is arranged on the vent hole and is in interference fit with the vent hole.

6. The lithium battery with the function of preventing charge explosion as claimed in claim 1, wherein: the fire extinguishing pipe is stored with fire extinguishing agent.