CN215008417U

CN215008417U - Lithium battery with explosion-proof flame retardant device

Info

Publication number: CN215008417U
Application number: CN202121411837.7U
Authority: CN
Inventors: 朱少敏; 刘春燕
Original assignee: Pengsheng Guoneng Shenzhen New Energy Group Co ltd
Current assignee: Pengsheng Guoneng Shenzhen New Energy Group Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-03
Anticipated expiration: 2031-06-24

Abstract

The utility model relates to a lithium cell technical field specifically is a lithium cell with explosion-proof flame retardant device, including lithium cell box shell, the fixed lid of side fixedly connected with of lithium cell box shell, the fixed surface of lithium cell box shell is connected with the spacing collar, the surface overlap joint of spacing collar has the lithium cell box, the spacing of bottom surface fixedly connected with of lithium cell box, the quantity of spacing has two, the side fixedly connected with hinge of lithium cell box. The utility model has the advantages that: through setting up fixed lid and spacing collar at lithium battery box shell surface, set up lithium battery box on the surface of spacing collar again, and set up two spacing in lithium battery box's bottom surface, and set up the hinge that has sealed lid in lithium battery box's side, set up sealing washer, buckle and stopper on the surface that sealed lid is close to lithium battery box, effectively solved the rainy day rainwater and flowed in the lithium cell through the gap of battery case, lead to the problem that the lithium cell burns out.

Description

Lithium battery with explosion-proof flame retardant device

Technical Field

The utility model relates to a lithium cell technical field, especially a lithium cell with explosion-proof flame retardant device.

Background

The lithium battery is a primary battery which takes lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is different from a rechargeable battery, namely a lithium ion battery and a lithium ion polymer battery, the inventor of the lithium battery is edison, and the lithium metal has very high requirements on environment because the chemical characteristics of the lithium metal are very active, so that the lithium battery is not applied for a long time, and with the development of microelectronic technology at the end of the twentieth century, miniaturized equipment is increasingly increased, and very high requirements on power sources are provided, and the lithium battery also enters a large-scale practical stage. The research of a large amount of lithium cell explosion accidents that catch fire is mostly inside the lithium cell electric core because of overheating or manufacturing defects cause the internal short circuit of positive and negative poles, cause the inside of electric core to produce a large amount of gas in the twinkling of an eye, and high temperature high pressure breaks through the electric core and is met the air and catch fire and explode after the electric core packing. Almost all lithium battery systems are composed of a plurality of lithium battery modules and more single batteries (or called battery cells), and the ignition of the battery system is realized by that after a certain battery cell is ignited, other battery cells are heated by barbecue to continuously cause short circuit of positive and negative electrodes in other battery cells to form chain reaction, so that the whole battery system is burnt. The basic function of the battery explosion-proof flame-retardant device is to accommodate and protect the battery pack, the structure of the battery explosion-proof flame-retardant device must ensure that the maximum accommodating space is reserved, the enough strength is met on the basis, the arrangement space is saved, the changeable operation environment is met, the design of the battery box recommends the use of a frame structure, namely, the frame and the bottom frame are welded by using section bars, the appearance of the battery box is preferably a regular cuboid, and the battery box can be properly adjusted according to the arrangement requirement. Most explosion-proof flame retardant device of lithium cell still has certain defect in the use in the existing market, if meet rainy day, the rainwater also can flow in the lithium cell through the gap of battery case, leads to the lithium cell to burn out, and then leads to dangerous occurence of failure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a lithium cell with explosion-proof flame retardant device.

The purpose of the utility model is realized through the following technical scheme: a lithium battery with an explosion-proof flame-retardant device comprises a lithium battery box shell, wherein a fixed box cover is fixedly connected to the side surface of the lithium battery box shell, a limiting ring is fixedly connected to the surface of the lithium battery box shell, a lithium battery box is lapped on the surface of the limiting ring, a limiting strip is fixedly connected to the bottom surface of the lithium battery box, the number of the limiting strips is two, hinges are fixedly connected to the side surface of the lithium battery box, the number of the hinges is two, a sealing cover is fixedly connected to the surface of each hinge, a flame-retardant plate is fixedly connected to the inside of the lithium battery box, an explosion-proof block is fixedly connected to the surface of the flame-retardant plate, a lithium battery placing groove, a temperature sensor placing groove, a first fire extinguishing agent placing groove, a second fire extinguishing agent placing groove, a buckling groove and a buffer device placing groove are formed in the surface of the explosion-proof block, and the number of the buffer device placing grooves is two, the inside fixedly connected with lithium cell buckle of lithium cell standing groove, the inside fixedly connected with lithium cell of lithium cell buckle, the inside fixedly connected with temperature sensor placing shell of temperature sensor standing groove, two the equal fixedly connected with buffer board in inside of buffer device standing groove, the box is placed to the fixed surface of lithium cell is connected with fire extinguishing agent.

Optionally, the inside fixed surface of lithium battery box shell is connected with buffer spring, buffer spring's one end and lithium battery box's fixed surface are connected, the fixed slot has been seted up to the inside bottom surface of lithium battery box shell, the inside of fixed slot and the fixed surface of spacing strip are connected, waterproof material is chooseed for use to lithium battery box shell.

Optionally, first fixed orifices have been seted up on the surface of fixed lid, the inside threaded connection of first fixed orifices has fixing bolt, the second fixed orifices has been seted up on the surface of lithium cell box shell, the inside of second fixed orifices and fixing bolt's surface threaded connection, one side fixedly connected with stopper that fixed lid is close to lithium cell box shell, the fixed surface of fixed lid is connected with the handle.

Optionally, the surface fixing that sealed lid is close to lithium battery box is connected with sealing washer, buckle and stopper, the inside in buckle groove is connected with the surface fixing of buckle, the observation window has been seted up on the surface of sealed lid, the surface fixing that sealed lid kept away from lithium battery box is connected with the handle.

Optionally, the number of the flame-retardant plates is four, four the surface of the flame-retardant plate is fixedly connected with the inner wall of the lithium battery box, and the material of the flame-retardant plate is made of an inorganic toughened material.

Optionally, the inside of first fire extinguishing agent standing groove and second fire extinguishing agent standing groove all fixedly connected with fire extinguishing agent, the surface of fire extinguishing agent comprises for main material by the low melting point material.

Optionally, a temperature sensor is placed inside the temperature sensor placing shell, and a temperature sensor display is arranged on the surface of the temperature sensor placing shell.

Optionally, a spring is fixedly connected inside each of the two buffer device placing grooves, and the surface of the spring is fixedly connected with the surface of the buffer plate.

Optionally, the surface of the fire extinguishing agent placing box is in lap joint with the surface of the buffer plate, and the surface of the fire extinguishing agent placing box and the surface of the buffer plate are respectively and fixedly connected with an anode cap and a cathode gasket.

The utility model has the advantages of it is following:

1. this lithium cell with explosion-proof flame retardant unit, through setting up fixed lid and spacing collar at lithium cell box shell surface, set up lithium cell box on the surface of spacing collar again, and set up two spacing in the bottom surface of lithium cell box, and set up the hinge that has sealed lid in the side of lithium cell box, the surface that is close to lithium cell box at sealed lid sets up the sealing washer, buckle and stopper, the gap inflow lithium cell that the rainy day rainwater passes through the battery case has effectively been solved, lead to the problem that the lithium cell burns out.

2. This lithium cell with explosion-proof flame retardant unit, through the fire-retardant board that has explosion-proof piece in the inside setting of lithium cell box, set up the lithium cell standing groove on the surface of explosion-proof piece again, the temperature sensor standing groove, first fire extinguishing agent standing groove, the second fire extinguishing agent standing groove, buckle groove and buffer device standing groove, and the inside fixedly connected with lithium cell buckle at the lithium cell standing groove, set up the lithium cell in the inside of lithium cell buckle, the inside at the temperature sensor standing groove sets up temperature sensor and places the shell, and set up the low-melting point fire extinguishing agent on the surface of lithium cell and place the box, the fire extinguishing agent is placed the box and is melted when taking place the conflagration, the fire extinguishing agent of the inside puts out a fire to the battery, reduce the emergence of conflagration as far as possible, the rationality of design has been embodied.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the lithium battery box casing of the present invention;

fig. 3 is a schematic structural view of the lithium battery box of the present invention;

fig. 4 is a schematic structural diagram of the fire extinguishing agent placing groove of the utility model.

In the figure: 1-lithium battery box shell, 2-fixed box cover, 3-spacing ring, 4-lithium battery box, 5-spacing strip, 6-hinge, 7-sealing cover, 8-flame retardant plate, 9-explosion-proof block, 10-lithium battery placing groove, 11-temperature sensor placing groove, 12-first fire extinguishing agent placing groove, 13-second fire extinguishing agent placing groove, 14-buckle groove, 15-buffer device placing groove, 16-lithium battery buckle, 17-lithium battery, 18-temperature sensor placing shell, 19-buffer plate, 20-fire extinguishing agent placing box.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in figures 1-4, a lithium battery with an explosion-proof and flame-retardant device comprises a lithium battery box shell 1, a fixed box cover 2 is fixedly connected to the side surface of the lithium battery box shell 1, a limiting ring 3 is fixedly connected to the surface of the lithium battery box shell 1, a lithium battery box 4 is lapped on the surface of the limiting ring 3, the lithium battery box 4 has the same working principle as the battery box in the prior art, only part of the structure is changed, a limiting strip 5 is fixedly connected to the bottom surface of the lithium battery box 4, two limiting strips 5 are arranged, a hinge 6 is fixedly connected to the side surface of the lithium battery box 4, two hinges 6 are arranged, a sealing cover 7 is fixedly connected to the surface of the hinge 6, the fixed box cover 2 and the limiting ring 3 are arranged on the surface of the lithium battery box shell 1, the lithium battery box 4 is arranged on the surface of the limiting ring 3, and two limiting strips 5 are arranged on the bottom surface of the lithium battery box 4, the hinge 6 with the sealing cover 7 is arranged on the side face of the lithium battery box 4, the sealing ring, the buckle and the limiting block are arranged on the surface, close to the lithium battery box 4, of the sealing cover 7, the problem that the lithium battery is burnt due to the fact that rainwater flows into the lithium battery through gaps of the battery box in rainy days is effectively solved, the flame retardant plate 8 is fixedly connected inside the lithium battery box 4, the explosion-proof block 9 is fixedly connected on the surface of the flame retardant plate 8, the lithium battery placing groove 10, the temperature sensor placing groove 11, the first fire extinguishing agent placing groove 12, the second fire extinguishing agent placing groove 13, the buckle groove 14 and the buffer device placing groove 15 are arranged on the surface of the explosion-proof block 9, the number of the buffer device placing grooves 15 is two, the lithium battery buckle 16 is fixedly connected inside the lithium battery placing groove 10, the lithium battery 17 is fixedly connected inside the lithium battery buckle 16, and the temperature sensor placing shell 18 is fixedly connected inside the temperature sensor placing groove 11, the interior of the two buffer device placing grooves 15 is fixedly connected with a buffer plate 19, the surface of the lithium battery 17 is fixedly connected with a fire extinguishing agent placing box 20, the fire-retardant plate 8 with an explosion-proof block 9 is arranged in the lithium battery box 4, the surface of the explosion-proof block 9 is provided with a lithium battery placing groove 10, a temperature sensor placing groove 11, a first fire extinguishing agent placing groove 12, a second fire extinguishing agent placing groove 13, a buckling groove 14 and the buffer device placing groove 15, a lithium battery buckle 16 is fixedly connected in the lithium battery placing groove 10, the lithium battery 17 is arranged in the lithium battery buckle 16, a temperature sensor placing shell 18 is arranged in the temperature sensor placing groove 11, the surface of the lithium battery 17 is provided with a low-melting-point fire extinguishing agent placing box 20, when a fire breaks out, the fire extinguishing agent inside extinguishes the battery, and the occurrence of the fire is reduced as much as possible, embodying the rationality of the design, the surface inside the shell 1 of the lithium battery box is fixedly connected with a buffer spring, one end of the buffer spring is fixedly connected with the surface of the lithium battery box 4, the bottom surface inside the shell 1 of the lithium battery box is provided with a fixed groove, the inside of the fixed groove is fixedly connected with the surface of a limit strip 5, the shell 1 of the lithium battery box is made of waterproof material, the surface of the fixed box cover 2 is provided with a first fixed hole, the inner part of the first fixed hole is connected with a fixed bolt through screw thread, the surface of the shell 1 of the lithium battery box is provided with a second fixed hole, the inside of the second fixed hole is connected with the surface of the fixed bolt through screw thread, one side of the fixed box cover 2 close to the shell 1 of the lithium battery box is fixedly connected with a limit block, the surface of the fixed box cover 2 is fixedly connected with a handle, the surface of the seal cover 7 close to the lithium battery box 4 is fixedly connected with a seal ring, a buckle and a limit block, the inside of the buckle groove 14 is fixedly connected with the surface of the buckle, the observation window has been seted up on the surface of sealed lid 7, the fixed surface that lithium battery box 4 was kept away from to sealed lid 7 is connected with the handle, fire-retardant board 8's quantity has four, four fire-retardant board 8's surface and lithium battery box 4's inner wall fixed connection, fire-retardant board 8's material comprises for the main material by inorganic toughened material, the equal fixedly connected with fire extinguishing agent in inside of first fire extinguishing agent standing groove 12 and second fire extinguishing agent standing groove 13, the surface of fire extinguishing agent comprises low melting point material for main material, temperature sensor has been placed to the inside of temperature sensor place shell 18, the temperature sensor display has been seted up on the surface of temperature sensor place shell 18, the equal fixedly connected with spring in inside of two buffer device standing grooves 15, the surface of spring and buffer board 19's fixed surface are connected, the surface of fire extinguishing agent place box 20 and buffer board 19's surface overlap joint, the surface difference fixedly connected with positive polar cap and negative pole gasket of buffer board 19 of box 20 is placed to the fire extinguishing agent.

The working process of the utility model is as follows: through setting up fixed lid 2 and spacing collar 3 on lithium battery box shell 1 surface, set up lithium battery box 4 on the surface of spacing collar 3 again, and set up two spacing 5 in the bottom surface of lithium battery box 4, and set up hinge 6 that has sealed lid 7 in the side of lithium battery box 4, the surface that is close to lithium battery box 4 at sealed lid 7 sets up the sealing washer, buckle and stopper, the problem that rainy day rainwater flows into the lithium cell through the gap of battery case has effectively been solved, lead to the lithium cell to burn out, through set up fire-retardant plate 8 that has explosion-proof piece 9 in the inside of lithium battery box 4, set up lithium battery standing groove 10 again on the surface of explosion-proof piece 9, temperature sensor standing groove 11, first fire extinguishing agent standing groove 12, second fire extinguishing agent standing groove 13, buckle groove 14 and buffer device standing groove 15, and fixedly connected with lithium battery buckle 16 in the inside of lithium battery standing groove 10, Set up lithium cell 17 in lithium cell buckle 16's inside, set up temperature sensor at the inside of temperature sensor standing groove 11 and place shell 18, and set up the fire extinguishing agent of low melting point on lithium cell 17's surface and place box 20, the fire extinguishing agent is placed the box and is melted when the conflagration breaing out, and the fire extinguishing agent of the inside puts out a fire to the battery, reduces the emergence of conflagration as far as possible, has embodied the rationality of design.

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

1. The utility model provides a lithium cell with explosion-proof flame retardant device which characterized in that: including lithium battery box shell (1), the fixed lid of side fixedly connected with (2) of lithium battery box shell (1), the fixed surface of lithium battery box shell (1) is connected with spacing collar (3), the surface overlap joint of spacing collar (3) has lithium battery box (4), the spacing strip of bottom surface fixedly connected with (5) of lithium battery box (4), the quantity of spacing strip (5) has two, the side fixedly connected with hinge (6) of lithium battery box (4), the quantity of hinge (6) has two, the fixed surface of hinge (6) is connected with sealed lid (7), the inside fixedly connected with fire-retardant board (8) of lithium battery box (4), the fixed surface of fire-retardant board (8) is connected with explosion-proof block (9), lithium battery standing groove (10), temperature sensor standing groove (11), battery standing groove (11) have been seted up on the surface of explosion-proof block (9), First fire extinguishing agent standing groove (12), second fire extinguishing agent standing groove (13), buckle groove (14) and buffer device standing groove (15), the quantity of buffer device standing groove (15) has two, the inside fixedly connected with lithium cell buckle (16) of lithium cell standing groove (10), the inside fixedly connected with lithium cell (17) of lithium cell buckle (16), the inside fixedly connected with temperature sensor place shell (18) of temperature sensor standing groove (11), two the equal fixedly connected with buffer board (19) in inside of buffer device standing groove (15), box (20) is placed to the fixed surface of lithium cell (17) is connected with the fire extinguishing agent.

2. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: the inside fixed surface of lithium cell box shell (1) is connected with buffer spring, buffer spring's one end and the fixed surface of lithium cell box (4) are connected, the fixed slot has been seted up to the inside bottom surface of lithium cell box shell (1), the inside of fixed slot and the fixed surface of spacing (5) are connected, waterproof material is chooseed for use in lithium cell box shell (1).

3. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: first fixed orifices has been seted up on the surface of fixed lid (2), the inside threaded connection of first fixed orifices has fixing bolt, the second fixed orifices has been seted up on the surface of lithium battery box shell (1), the inside and fixing bolt's of second fixed orifices surface threaded connection, one side fixedly connected with stopper that fixed lid (2) are close to lithium battery box shell (1), the fixed surface of fixed lid (2) is connected with the handle.

4. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: the surface fixing who seals lid (7) is close to lithium battery box (4) is connected with sealing washer, buckle and stopper, the inside of buckle groove (14) is connected with the surface fixing of buckle, the observation window has been seted up on the surface of sealed lid (7), the surface fixing who seals lid (7) and keep away from lithium battery box (4) is connected with the handle.

5. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: the quantity of fire-retardant board (8) has four, four the surface of fire-retardant board (8) and the inner wall fixed connection of lithium battery box (4), the material of fire-retardant board (8) comprises for the main material by inorganic tempering material.

6. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: the inside equal fixedly connected with fire extinguishing agent of first fire extinguishing agent standing groove (12) and second fire extinguishing agent standing groove (13), the surface of fire extinguishing agent comprises for main material by the low melting material.

7. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: a temperature sensor is placed in the temperature sensor placing shell (18), and a temperature sensor display is arranged on the surface of the temperature sensor placing shell (18).

8. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: the two buffer device placing grooves (15) are fixedly connected with springs inside, and the surfaces of the springs are fixedly connected with the surface of a buffer plate (19).

9. A lithium battery having an explosion proof and flame retardant device according to claim 1, wherein: the surface of the fire extinguishing agent placing box (20) is in lap joint with the surface of the buffer plate (19), and the surface of the fire extinguishing agent placing box (20) and the surface of the buffer plate (19) are respectively and fixedly connected with a positive electrode cap and a negative electrode gasket.