CN217444492U

CN217444492U - Battery box capable of effectively preventing thermal runaway diffusion

Info

Publication number: CN217444492U
Application number: CN202220366539.9U
Authority: CN
Inventors: 范圣杰; 钱明益; 王剑; 周宁; 范晓文
Original assignee: SUZHOU DURAPOWER TECHNOLOGY CO LTD
Current assignee: SUZHOU DURAPOWER TECHNOLOGY CO LTD
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-09-16
Anticipated expiration: 2032-02-23

Abstract

The utility model relates to a can prevent battery box of thermal runaway diffusion effectively, electric core module including a plurality of electric chips, electric core module is placed in the battery box, the battery box includes box and case lid, be provided with heat dissipation channel in the electric core module, heat dissipation channel runs through the both ends of electric core module and divides the electric core module into two parts, heat insulating gasket is all provided with in the both sides of heat dissipation channel, heat insulating gasket is attached to the inner wall on the casing of electric chip, heat insulating gasket is silica gel material or fire-retardant rubber material, fire protection coating has all been sprayed on the casing inner wall of electric chip, box and case lid; every electric chip all is equipped with independent out-of-control structure that prevents, effectively guarantees when single electric core takes place the thermal runaway, can not stretch to battery box headspace, and then triggers whole thermal runaway. Meanwhile, the fireproof coatings on the box body and the box cover can effectively prevent open fire from being emitted outwards. The use safety of battery box has been improved.

Description

Battery box capable of effectively preventing thermal runaway diffusion

Technical Field

The utility model relates to a power battery technical field especially can prevent effectively battery box of thermal runaway diffusion.

Background

With the progress of science and technology, the reserves of fossil fuels are continuously reduced, and the new energy industries of various countries are rapidly developed. The application of power batteries is increasing, and the safety of the power batteries is always a key concern of the public. There are many factors affecting the safety of the battery, but most of the safety problems are caused by thermal runaway of the battery. The prevention of thermal runaway diffusion has been a major research project in the industry in order to continuously improve the safety of batteries. If a thermal runaway occurs in one electric core in a battery system without thermal runaway diffusion prevention or poor protective performance, heat can quickly spread to surrounding electric cores, especially a runaway flame can spread to the upper side of a battery, so that damages to other structures are caused, and the safety is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a can effectively prevent battery box of thermal runaway diffusion has solved the problem that current battery box thermal runaway easily spreads other electric cores and whole battery.

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

the utility model provides a can prevent battery box of thermal runaway diffusion effectively, the electric core module of constituteing including a plurality of electric chips, the electric core module is placed in the battery box, the battery box includes box and case lid, be provided with heat dissipation channel in the electric core module, heat dissipation channel runs through the both ends of electric core module and divides the electric core module into two parts, heat dissipation channel's both sides all are provided with thermal-insulated gasket, the casing upper end inner wall facing of electric chip has thermal-insulated gasket, thermal-insulated gasket is silica gel material or flame retardant rubber material, it has fire protection coating all to spray on electric chip's shells inner wall, box and the case lid.

Preferably, the inner peripheral wall of the box cover is covered with a mica plate.

Preferably, the intersection of the box body and the box cover is provided with ring-shaped foaming silica gel.

Preferably, the housing of the electric chip is an aluminum housing.

Preferably, the battery box is rectangular, and the battery box is made of a metal material.

Preferably, the protection safety level of the battery box is IP 67.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a can prevent battery box of thermal runaway diffusion effectively, including battery box and the electric core module of setting in the battery box, electric core module includes a plurality of monomers, the battery box includes box and case lid, be provided with heat dissipation channel in the electric core module, heat dissipation channel runs through the both ends of electric core module and divides the electric core module into two parts, heat dissipation channel's both sides all are provided with thermal-insulated gasket, all spray the fire protection coating on the shell inner wall of electric chip, the up end of each electric core also is provided with thermal-insulated gasket, the thermal-insulated gasket of electric core up end adheres on the inner wall of electric core shell, thermal-insulated gasket is silica gel material or fire-retardant rubber material, all spray the fire protection coating on box and the case lid; the existence of heat dissipation channel makes electric core module be divided into two, has increased holistic heat radiating area, takes place the thermal runaway's in one side the condition simultaneously under, the opposite side can also avoid receiving the interference, and every electric chip all is equipped with independent out-of-control structure that prevents, effectively guarantees when single electric core takes place the thermal runaway, can not stretch to battery box headspace, and then causes whole thermal runaway. Meanwhile, the fireproof coatings on the box body and the box cover can effectively prevent open fire from being emitted outwards. The use safety of battery box has been improved.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings;

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the inside of the embodiment of the present invention;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a front view of fig. 1.

Wherein the reference numerals are as follows:

11. a box body; 12. box cover

21. A heat dissipation channel; 22. an electrical chip; 23. a heat insulating spacer; 24. Ring-shaped foaming silica gel.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the battery box capable of effectively preventing thermal runaway diffusion includes a box body 11 and a box cover 12, the box body 11 is provided with a plurality of battery cell modules including a plurality of electric chips 22, both ends of the electric chips 22 are fixed in the battery box, a heat dissipation channel 21 is further provided in the battery cell modules, the heat dissipation channel 21 divides the battery cell modules into two parts, and the two parts which can be the same in number as the electric chips 22 and the two parts which can be different in number as the electric chips 22 are in two groups. Both sides of heat dissipation channel 21 all are provided with thermal-insulated gasket 23, and the thermal-insulated gasket 23 that sets up in heat dissipation channel both sides can insulate against heat with two parts of electric core module, when partly meets accident, prevents the injury of another part as far as. The purpose of the heat dissipation channel is to increase the heat dissipation area of the battery module and ensure the heat dissipation effect.

The shell upper end inner wall facing of every electric chip 22 has thermal-insulated gasket 23, and thermal-insulated gasket 23 is silica gel material or fire-retardant rubber material, and it has fire protection coating all to spray on electric chip 22's shells inner wall, box 11 and the case lid 12, and the setting is in order to prevent when the accident takes place, and the battery box internal heat is out of control and is stretched to battery package headspace.

The mica plate covers on the internal perisporium of case lid, and the mica plate has good high temperature resistant insulating properties, good electrical insulation performance, further prevents that the battery box heat is out of control and outwards spreads.

Referring to fig. 2 and 3, a ring-shaped foamed silica gel 24 is disposed at the intersection of the box body 11 and the box cover 12, and the ring-shaped foamed silica gel 24 is disposed at the intersection of the box body and the box cover, which is mainly used to ensure the airtightness of the box body, and if the airtightness is poor, in an unexpected case, external oxygen enters the box body to cause the combustion to be more intense.

The housing of the electrical chip 22 is an aluminum housing, and aluminum materials are widely used in the battery field for their lightness, good electrical and thermal conductivity, and resistance to oxidation. The shape of battery box is the rectangle, and the battery box is the battery box of metal material, sets up like this for the material of other shapes, and radiating space is also bigger, and is whole also comparatively slim and graceful.

The protection safety level of the battery box is IP67, the IP67 standard refers to the protection safety level, and the protection level in the utility model is protection dust suction (whole contact prevention and protection dust penetration); and (4) short-time soaking (preventing soaking) during protection. The ring-shaped foaming silica gel is also an important measure for realizing the safety protection level in the utility model.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a can prevent battery box of thermal runaway diffusion effectively, includes a plurality of electric core modules of electric chip, the electricity core module is placed in the battery box, the battery box includes box and case lid, a serial communication port, be provided with heat dissipation channel in the electricity core module, heat dissipation channel runs through the both ends of electric core module and divides the electric core module into two parts, heat dissipation channel's both sides all are provided with thermal-insulated gasket, the casing upper end inner wall facing of electric chip has thermal-insulated gasket, thermal-insulated gasket is silica gel material or flame retardant rubber material, all spray on the shells inner wall of electric chip, box and the case lid have fire protection coating.

2. The battery box according to claim 1, wherein the battery box is effective for preventing thermal runaway diffusion and is characterized in that: the inner peripheral wall of the box cover is covered with a mica plate.

3. The battery box according to claim 1, wherein the battery box is effective for preventing thermal runaway diffusion, and comprises: and a ring-shaped foaming silica gel is arranged at the intersection of the box body and the box cover.

4. The battery box according to claim 1, wherein the battery box is effective for preventing thermal runaway diffusion, and comprises: the shell of the electric chip is an aluminum shell.

5. The battery box according to claim 1, wherein the battery box is effective for preventing thermal runaway diffusion and is characterized in that: the battery box is rectangular and made of metal materials.

6. The battery box according to claim 1, wherein the battery box is effective for preventing thermal runaway diffusion and is characterized in that: the protection safety level of the battery box is IP 67.