CN212648355U

CN212648355U - High temperature resistant lithium cell group

Info

Publication number: CN212648355U
Application number: CN202021213611.1U
Authority: CN
Inventors: 李卫松
Original assignee: Jiangsu Fuwei Energy Co ltd
Current assignee: Jiangsu Fuwei Energy Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-02
Anticipated expiration: 2030-06-28

Abstract

The utility model discloses a high temperature resistant lithium battery pack, the utility model discloses in, including the main casing body, the inner wall of the left and right sides of the main casing body is provided with a mounting groove, and the inside of the groove is spliced with a flame-retardant baffle, the terminal welding of one side of the flame-retardant baffle has a mounting plate, the left and right sides face of the flame-retardant baffle is provided with a side clamping groove, the side clamping groove is provided with a side clamping block below; the inside of the main casing body is provided with prevents burning layer, and prevents burning layer's inside and be provided with fire-retardant granule, the fire-retardant safe piece of top fixedly connected with of fire-retardant granule, fire-retardant baffle can carry out the separation to outside flame, prevents that lithium cell body from receiving outside flame to destroy, and the heat that produces lithium cell body during operation that laminating preforming cooperation heat absorption granule can be timely discharges to the external world to prevent that the inside heat of lithium cell body from gathering too much, arouse the incident, from the emergence that has reduced combustion phenomena in the source.

Description

High temperature resistant lithium cell group

Technical Field

The utility model belongs to the technical field of the lithium cell, specifically be a high temperature resistant lithium cell group.

Background

Lithium, atomic number 3, atomic weight 6.941, is the lightest alkali metal element. In order to improve safety and voltage, scientists have invented materials such as graphite and lithium cobaltate to store lithium atoms. The molecular structure of these materials forms a nano-scale fine storage lattice for storing lithium atoms. Thus, even if the battery case is broken, oxygen gas may not enter the fine cells because the oxygen molecules are too large, so that the lithium atoms may not contact the oxygen gas to prevent explosion. A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, m.s.whitetingham proposed and began to study lithium ion batteries. 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. With the development of scientific technology, lithium batteries have become the mainstream.

Common lithium cell all can produce more heat when using, if can not in time discharge the heat, will bring the potential safety hazard, if the external incident that has taken place simultaneously, often the lithium cell also can inevitable produce the burning.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above-mentioned problems, a high temperature resistant lithium battery pack is provided.

The utility model adopts the technical scheme as follows: a high-temperature-resistant lithium battery pack comprises a main shell, wherein mounting grooves are formed in the inner walls of the left side and the right side of the main shell, a flame-retardant partition plate is inserted into each groove, a mounting plate is welded at the tail end of one side of the flame-retardant partition plate, side clamping grooves are formed in the left side surface and the right side surface of the flame-retardant partition plate, and side clamping blocks are arranged below the side clamping grooves;

the inside of the main casing body is provided with the flame retardant coating, and the inside of flame retardant coating is provided with fire-retardant granule, the fire-retardant safe piece of top fixedly connected with of fire-retardant granule, the inside of fire-retardant granule is provided with the heat conduction intermediate layer, and the interbedded inside of heat conduction is provided with the laminating preforming, the outside fixedly connected with heat conduction copper pole of laminating preforming, the inner wall bottom packing of the main casing body has the heat absorption granule, the top welding of heat absorption granule has places the board, the lithium cell body has been placed to the upper surface of placing the board, the top fixed mounting of lithium cell body has the battery handle.

In a preferred embodiment, an insertion block adapted to the side clamping groove is disposed inside the mounting groove formed in the inner wall of the main housing, and a slot adapted to the side clamping groove is formed in the mounting groove.

In a preferred embodiment, the flame retardant particles are coated with a film with a low ignition point, and the flame retardant particles are made of a polyethylene series flame retardant material.

In a preferred embodiment, a diaphragm is welded on the upper surface of the main shell in the transverse direction, the diaphragm is made of a heat-insulating material, and the lithium battery body is placed at two ends of the diaphragm.

In a preferred embodiment, the upper and lower inner side surfaces of the mounting plate are bonded with protruding fixture blocks, the protruding fixture blocks are made of magnetic materials, the number of the protruding fixture blocks is four, and one side of the outer surface of the main housing, which is close to the mounting plate, is provided with a magnetic groove matched with the mounting plate.

In a preferred embodiment, the number of the bonding pressing sheets and the number of the heat conducting copper rods are two, the bonding pressing sheets are made of materials with softer texture, and the surface of each bonding pressing sheet is sprayed with frosted particles.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, fire-retardant baffle can carry out the separation to outside flame, prevents that lithium cell body from receiving outside flame and destroying, and the inside fire-retardant granule of fire-retardant granule can carry out the separation to the burning incident that lithium cell body inside takes place simultaneously to the device's security can be increased.

2. The utility model discloses in, the heat discharge to the external world that produces lithium cell body during operation that laminating preforming cooperation heat absorption granule can be timely to prevent that the inside heat of lithium cell body from gathering too much, arouse the incident, reduced the emergence of burning phenomenon from the source.

Drawings

Fig. 1 is a perspective view of the present invention;

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

fig. 3 is a perspective view of the middle flame-retardant partition plate of the present invention.

The labels in the figure are: the battery comprises a main shell 1, a flame-retardant partition plate 2, a lithium battery body 3, a flame-retardant safety block 4, flame-retardant particles 5, a heat-conducting copper rod 6, a laminating pressing sheet 7, heat-absorbing particles 8, a placing plate 9, a mounting plate 10, a protruding clamping block 11, a side clamping groove 12, a side clamping block 13, a battery handle 14 and a transverse partition plate 15.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are 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 efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, a high temperature resistant lithium battery pack comprises a main housing 1, a diaphragm 15 is transversely welded on the upper surface of the main housing 1, the diaphragm 15 is made of a heat-insulating material, and lithium battery bodies 3 are placed at two ends of the diaphragm 15; an inserting block matched with the side clamping groove 12 is arranged in an installing groove formed in the inner wall of the main shell 1, and an inserting groove matched with the side clamping block 13 is formed in the installing groove; the inner walls of the left side and the right side of the main shell 1 are provided with mounting grooves, the flame-retardant partition plates 2 are inserted into the grooves, the tail end of one side of each flame-retardant partition plate 2 is welded with a mounting plate 10, protruding fixture blocks 11 are bonded on the upper inner side surface and the lower inner side surface of each mounting plate 10, the protruding fixture blocks 11 are made of magnetic materials, the number of the protruding fixture blocks 11 is four, and one side, close to the mounting plates 10, of the outer surface of the main shell 1 is provided with magnetic grooves; the left side surface and the right side surface of the flame-retardant partition plate 2 are provided with side clamping grooves 12, the side clamping blocks 13 are arranged below the side clamping grooves 12, the flame-retardant partition plate 2 can block external flame, the lithium battery body 3 is prevented from being damaged by the external flame, and meanwhile, the flame-retardant particles in the flame-retardant particles 5 can block combustion occurrence in the lithium battery body 3, so that the safety of the device can be improved;

an anti-combustion layer is arranged inside the main shell 1, flame-retardant particles 5 are arranged inside the anti-combustion layer, a film with a lower ignition point is covered outside the flame-retardant particles 5, and the flame-retardant particles 5 are made of polyethylene series flame-retardant materials; the top of the flame-retardant particle 5 is fixedly connected with a flame-retardant safety block 4, a heat-conducting interlayer is arranged inside the flame-retardant particle 5, a laminating pressing sheet 7 is arranged inside the heat-conducting interlayer, the number of the laminating pressing sheets 7 and the number of the heat-conducting copper rods 6 are two, the laminating pressing sheet 7 is made of a material with relatively soft texture, and the surface of the laminating pressing sheet 7 is sprayed with frosted particles; outside fixedly connected with heat conduction copper pole 6 of laminating preforming 7, the inner wall bottom-packing of the main casing body 1 has heat absorption granule 8, the top welding of heat absorption granule 8 has places board 9, lithium cell 3 has been placed to the upper surface of placing board 9, lithium cell 3's top fixed mounting has battery handle 14, the heat that produces lithium cell 3 during operation that laminating preforming 7 cooperation heat absorption granule 8 can be timely is discharged to the external world, thereby prevent that the inside heat of lithium cell 3 from gathering too much, arouse the incident, the emergence of burning phenomenon has been reduced from the source.

The working principle is as follows: when the high-temperature-resistant lithium battery pack is used, the main shell 1 can be fixed firstly, then the single lithium battery body 3 is installed inside the main shell 1, at the moment, the lithium battery body 3 can be placed on the upper surface of the placing plate 9 firstly, so that the outer wall of the lithium battery body 3 is attached to the surface of the laminating sheet 7, when the lithium battery body 3 is used, the inside of the lithium battery body 3 generates larger heat, the heat shinbone laminating pressing sheet 7 and the bottom heat absorption particles 8 are fully discharged to the outside after conduction, when a safety accident suddenly happens to the outside, if exposed fire occurs, the flame-retardant partition 2 will prevent the flame from burning into the main case 1, so that the lithium battery body 3 will burn, if the flame-retardant partition plate 2 needs to be replaced, the flame-retardant partition plate 2 is inserted through the side clamping grooves 12 and the side clamping blocks 13 only by pulling out the mounting plate 10 and replacing a new flame-retardant partition plate 2; meanwhile, the inside of the main shell 1 is burnt, at this time, if flame burns the outside of the flame retardant particles 5, at this time, the film outside the flame retardant particles 5 is broken, the flame retardant particles 5 explode out to stop the flame, a new flame retardant particle 5 can be replaced, and the new flame retardant particle 5 is reinstalled into the inside of the main shell 1 through the flame retardant safety block 4.

In this high temperature resistance lithium cell group, fire-retardant baffle 2 can carry out the separation to the flame of outside, prevents that lithium cell body 3 from receiving outside flame and destroying, and the fire-retardant granule of 5 inside fire-retardant granules simultaneously can carry out the separation to the burning occurrence that lithium cell body 3 is inside to the security that can increase the device.

In this high temperature resistance lithium cell group, the heat that produces lithium cell body 3 during operation that laminating preforming 7 cooperation heat absorption granule 8 can be timely discharges the external world to prevent that the heat of 3 inside lithium cell bodies from gathering too much, arouse the incident, reduced the emergence of burning phenomenon from the source.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A high temperature resistant lithium battery group, includes main casing (1), its characterized in that: the inner walls of the left side and the right side of the main shell (1) are provided with mounting grooves, flame-retardant partition plates (2) are inserted into the grooves, the tail end of one side of each flame-retardant partition plate (2) is welded with a mounting plate (10), the left side surface and the right side surface of each flame-retardant partition plate (2) are provided with side clamping grooves (12), and side clamping blocks (13) are arranged below the side clamping grooves (12);

the inside of the main casing body (1) is provided with the flame retardant coating, and the inside of flame retardant coating is provided with fire-retardant granule (5), the fire-retardant safe piece of top fixedly connected with (4) of fire-retardant granule (5), the inside of fire-retardant granule (5) is provided with the heat conduction intermediate layer, and the inside of heat conduction intermediate layer is provided with laminating preforming (7), the outside fixedly connected with heat conduction copper pole (6) of laminating preforming (7), the inner wall bottom packing of the main casing body (1) has heat absorption granule (8), the top welding of heat absorption granule (8) has places board (9), place the upper surface of board (9) and placed lithium cell body (3), the top fixed mounting of lithium cell body (3) has battery handle (14).

2. The lithium battery pack with high temperature resistance according to claim 1, wherein: the inside of the mounting groove that the inner wall of main casing body (1) was seted up be provided with the inserted block of side draw-in groove (12) looks adaptation, and the inslot be equipped with the slot of the fast (13) looks adaptation of side card.

3. The lithium battery pack with high temperature resistance according to claim 1, wherein: the flame-retardant particle is characterized in that a film with a lower ignition point is coated outside the flame-retardant particle (5), and the flame-retardant particle (5) is made of polyethylene series flame-retardant materials.

4. The lithium battery pack with high temperature resistance according to claim 1, wherein: the upper surface of main casing body (1) transversely welds has cross slab (15), cross slab (15) have adopted thermal-insulated insulating material to make, placed at the both ends of cross slab (15) lithium cell body (3).

5. The lithium battery pack with high temperature resistance according to claim 1, wherein: protruding fixture block (11) have been bonded to the upper and lower inboard surface of mounting panel (10), protruding fixture block (11) have adopted magnetic material to make, the quantity of protruding fixture block (11) is four, the surface of main casing body (1) is close to one side of mounting panel (10) seted up with the magnetic slot of mounting panel (10) looks adaptation.

6. The lithium battery pack with high temperature resistance according to claim 1, wherein: laminating preforming (7) with the quantity of heat conduction copper pole (6) is two, laminating preforming (7) have adopted the comparatively soft material of texture to make, the surface spraying of laminating preforming (7) has dull polish granule.