CN214706030U

CN214706030U - Lithium battery protection equipment with overheat early warning function

Info

Publication number: CN214706030U
Application number: CN202120467308.2U
Authority: CN
Inventors: 葛崇举
Original assignee: Xuzhou Lichang Electronic Technology Co ltd
Current assignee: Xuzhou Lichang Electronic Technology Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-11-12
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a lithium battery protection device with overheated early warning function, including protection box body and the lithium cell of locating protection box body, protection box body upper cover is equipped with the end cover, is equipped with the early warning chamber in the end cover, and the early warning intracavity is equipped with the mounting panel, installs the power on the mounting panel, is equipped with the holding tank in the one side that the end cover is close to the lithium cell, is equipped with the sensible heat board in the holding tank, is connected with easily to melt the piece in the one side that the sensible heat board is close to the mounting panel, is equipped with the contact on the easily melting piece, contact and power electric connection are equipped with the alarm lamp on the end cover, the alarm lamp respectively with sensible heat board and power electric connection. The utility model discloses a setting of corresponding mechanism in the lithium cell protection box is convenient for carry out the high temperature early warning suggestion to the lithium cell protection box for the temperature in the lithium cell protection box is difficult for rising too high, thereby can guarantee the operational environment of lithium cell, guarantees the life of lithium cell, reduces the probability that the lithium cell exploded because of the high temperature.

Description

Lithium battery protection equipment with overheat early warning function

Technical Field

The utility model belongs to the technical field of the lithium cell, concretely relates to lithium cell protection equipment with overheated early warning function.

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 lithium battery is a modern ideal energy carrier due to high working voltage, small volume, light weight, high energy, no memory effect, no pollution, small self-discharge and long cycle life. However, the chemical properties of lithium metal are very active, so that the lithium metal has very high requirements on the environment for processing, storage and use. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. The lithium ion battery does not contain metallic lithium, so the lithium ion battery can be charged.

In order to prolong the life of lithium cell, the lithium cell generally need cooperate the protection box to use, but uses the protection box will produce certain influence to the heat dissipation of lithium cell, because current lithium cell protection box lacks high temperature early warning mechanism, and the heat that the lithium cell during operation produced is gathered in the protection box easily, leads to lithium cell temperature to rise, influences the life of lithium cell, serious can cause the explosion of lithium cell.

Therefore, in view of the above technical problems, it is necessary to provide a lithium battery protection device with an overheat warning function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium battery protection equipment with overheated early warning function to solve foretell lithium battery protection box and influence lithium cell life's problem owing to lack high temperature early warning mechanism.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

the utility model provides a lithium battery protection equipment with overheated early warning function, includes protection box body and locates this internal lithium cell of protection box, protection box body upper cover is equipped with the end cover, be equipped with the early warning chamber in the end cover, the early warning intracavity is equipped with the mounting panel, install the power on the mounting panel, the end cover is close to and is equipped with the holding tank in the one side of lithium cell, be equipped with the sensible heat board in the holding tank, be connected with easily to melt the piece in the one side that the sensible heat board is close to the mounting panel, be equipped with the contact on the easily melting piece, contact and power electric connection, be equipped with the alarm lamp on the end cover, the alarm lamp respectively with sensible heat board and power electric connection.

Furthermore, a plurality of exchange air holes are formed in the side wall of the protection box body, first thin films are arranged in the exchange air holes, and the interior of the protection box body is communicated with the outside through the exchange air holes.

Further, the mounting plate is fixedly connected with the inner wall of the early warning cavity and used for fixing the mounting plate.

Further, protection box body is inside to be linked together through holding tank and early warning chamber, and the installation of being convenient for feels the hot plate, it is the metal material to feel the hot plate for this internal temperature of response protection box, when this internal temperature of protection box risees, feels the hot plate and can carry out heat conduction.

Furthermore, the contact piece is made of conductive metal and used for conducting electricity.

Furthermore, a filling cavity is formed in the end cover in a chiseling mode and used for containing foaming agents, a partition plate is connected between the filling cavity and the early warning cavity and used for separating the filling cavity from the early warning cavity, vent holes are formed in the end cover in a chiseling mode, gas generated when the foaming agents are heated can enter the protection box body through the vent holes, a second thin film is arranged in the vent holes, capillary holes are formed in the first thin film and the second thin film, gas circulation is facilitated, and the protection box body is communicated with the filling cavity through the vent holes.

Furthermore, the filling cavity is filled with foaming agent, and when the foaming agent is heated, gas can be generated to accelerate the air circulation in the protection box body.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses a setting of corresponding mechanism in the lithium cell protection box is convenient for carry out the high temperature early warning suggestion to the lithium cell protection box for the temperature in the lithium cell protection box is difficult for rising too high, thereby can guarantee the operational environment of lithium cell, guarantees the life of lithium cell, reduces the probability that the lithium cell exploded because of the high temperature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of a lithium battery protection device with an overheat warning function according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a portion a in fig. 1 according to an embodiment of the present invention;

fig. 3 is a perspective view of a lithium battery protection device with an overheat early warning function according to an embodiment of the present invention.

In the figure: 1. the protective box comprises a protective box body, 101 exchange air holes, 2 lithium batteries, 3 end covers, 301 warning cavities, 302 mounting plates, 303 power supplies, 304 heat sensing plates, 305 fusible parts, 306 contact pieces, 307 warning lamps, 308 filling cavities, 309 partition plates, 310 vent holes and 311 foaming agents.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiments, and the structural, method, or functional changes made by those skilled in the art according to the embodiments are all included in the scope of the present invention.

The utility model discloses a lithium battery protection equipment with overheated early warning function, refer to fig. 1-3 and show, including protection box body 1, locate lithium cell 2 in the protection box body 1 and the end cover 3 that is used for the high temperature early warning.

Wherein, be equipped with a plurality of exchange gas pockets 101 on the lateral wall of protection box body 1, be equipped with first film in the exchange gas pocket 101, be convenient for carry out gas exchange for the difficult too high that rises of temperature in the protection box body 1, protection box body 1 is inside to be linked together with the external world through exchange gas pocket 101.

Referring to fig. 1-3, an end cover 3 is disposed on the protection box body 1 for sealing the protection box body 1, so as to protect the lithium battery 2 in the protection box body 1, an early warning cavity 301 is disposed in the end cover 3 for mounting a mounting plate 302 and a power supply 303, the early warning cavity 301 is disposed with the mounting plate 302, the mounting plate 302 is fixedly connected with the inner wall of the early warning cavity 301 for fixing the mounting plate 302, the power supply 303 is mounted on the mounting plate 302, the power supply 303 is a human body safe voltage, preferably, the rated voltage of the power supply 303 is 32V, an accommodating groove is disposed on a side of the end cover 3 close to the lithium battery 2, a heat sensing plate 304 is disposed in the accommodating groove, the interior of the protection box body 1 is communicated with the early warning cavity 301 through the accommodating groove, so as to facilitate mounting the heat sensing plate 304, the heat sensing plate 304 is made of metal material for sensing the temperature in the protection box body 1, when the temperature in the protection box body 1 rises, the heat sensing plate 304 can conduct heat, be connected with easily melt piece 305 on the one side that heat sensing board 304 is close to mounting panel 302, easily melt the temperature of piece 305 and be 30 ℃, be equipped with contact 306 on easily melting piece 305, contact 306 is the conductive metal material, be used for electrically conductive, when the temperature in the protection box body 1 surpasses 30 ℃, easily melt piece 305 and melt, contact 306 is because gravity and heat sensing board 304 contact, thereby make power 303, heat sensing board 304, easily melt piece 305 and alarm lamp 307 and form closed loop, alarm lamp 307 shines, be used for reminding the user, contact 306 and power 303 electric connection, be equipped with alarm lamp 307 on the end cover 3, be used for carrying out the early warning suggestion, alarm lamp 307 respectively with heat sensing board 304 and power 303 electric connection.

Referring to fig. 1-2, a filling cavity 308 is drilled in an end cover 3 for containing a foaming agent 311, a partition 309 is connected between the filling cavity 308 and an early warning cavity 301 for partitioning the filling cavity 308 and the early warning cavity 301, an air vent 310 is drilled in the end cover 3 for facilitating the entry of air generated by heating the foaming agent 311 into a protection box body 1 through the air vent 310, a second film is arranged in the air vent 310, capillary holes are formed in the first film and the second film for facilitating the circulation of air, when the foaming agent 311 is heated, air is generated to increase the pressure in the filling cavity 308, the air extrudes the second film to increase the diameter of the capillary holes in the second film, so that the air in the filling cavity 308 enters the protection box body 1 to increase the pressure in the protection box body 1, when the pressure in the protection box body 1 reaches a certain degree, the air in the protection box body 1 extrudes the capillary holes in the first film, the diameter of the capillary hole on the first film is increased, the gas in the protection box body 1 is discharged to the outside of the protection box body 1 through the first capillary hole to be cooled, the inside of the protection box body 1 is communicated with the filling cavity 308 through the vent hole 310, the filling cavity 308 is filled with the foaming agent 311, and when the foaming agent 311 is heated, the gas can be generated to accelerate the air circulation in the protection box body 1.

When the temperature in the protection box body 1 exceeds 30 ℃ during specific use, the heat sensing plate 304 senses the temperature in the protection box body 1 and transmits the temperature to the easily-melting piece 305, when the easily-melting piece 305 is heated to reach a certain temperature, the easily-melting piece 305 starts to melt until the easily-melting piece 305 completely melts, and the contact piece 306 is in contact with the heat sensing plate 304 due to gravity, so that the power supply 303, the heat sensing plate 304, the easily-melting piece 305 and the alarm lamp 307 form a closed loop, and the alarm lamp 307 is lightened to remind a user; meanwhile, when the foaming agent 311 is heated, gas is generated, the gas makes the pressure in the filling cavity 308 larger, the gas extrudes the second film, the diameter of the capillary hole in the second film is larger, the gas in the filling cavity 308 can conveniently enter the protection box body 1, and further the pressure in the protection box body 1 is enabled to be higher.

According to the technical scheme provided by the utility model, the utility model discloses following beneficial effect has:

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A lithium battery protection device with an overheat early warning function comprises a protection box body (1) and a lithium battery (2) arranged in the protection box body (1), it is characterized in that an end cover (3) is arranged on the upper cover of the protection box body (1), an early warning cavity (301) is arranged in the end cover (3), a mounting plate (302) is arranged in the early warning cavity (301), a power supply (303) is arranged on the mounting plate (302), one surface of the end cover (3) close to the lithium battery (2) is provided with an accommodating groove, a heat sensing plate (304) is arranged in the accommodating groove, one surface of the heat sensing plate (304) close to the mounting plate (302) is connected with an easily-melted part (305), a contact piece (306) is arranged on the fusible piece (305), the contact piece (306) is electrically connected with the power supply (303), the end cover (3) is provided with an alarm lamp (307), and the alarm lamp (307) is electrically connected with the heat sensing plate (304) and the power supply (303) respectively.

2. The lithium battery protection device with the overheat early warning function according to claim 1, wherein a plurality of exchange air holes (101) are formed in a side wall of the protection box body (1), and the inside of the protection box body (1) is communicated with the outside through the exchange air holes (101).

3. The lithium battery protection device with the overheat warning function as claimed in claim 1, wherein the mounting plate (302) is fixedly connected with the inner wall of the warning cavity (301).

4. The lithium battery protection device with the overheat warning function according to claim 1, wherein the inside of the protection box body (1) is communicated with the warning cavity (301) through an accommodating groove, and the heat sensing plate (304) is made of metal.

5. The lithium battery protection device with the overheat warning function as claimed in claim 1, wherein the contact piece (306) is made of a conductive metal material.

6. The lithium battery protection device with the overheat warning function according to claim 1, wherein a filling cavity (308) is formed in the end cover (3) in a chiseled mode, a partition plate (309) is connected between the filling cavity (308) and the warning cavity (301), a vent hole (310) is formed in the end cover (3), and the inside of the protection box body (1) is communicated with the filling cavity (308) through the vent hole (310).

7. The lithium battery protection device with the overheat warning function as claimed in claim 6, wherein the filling cavity (308) is filled with a foaming agent (311).