CN217444577U

CN217444577U - Battery heat-insulating exhaust assembly and battery pack

Info

Publication number: CN217444577U
Application number: CN202221244246.XU
Authority: CN
Inventors: 陈卓烈; 崔鑫; 何亚飞
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-16
Anticipated expiration: 2032-05-23

Abstract

The utility model belongs to the technical field of the battery thermal-insulated exhaust, a battery thermal-insulated exhaust subassembly and battery package are disclosed. The battery heat-insulation exhaust assembly comprises a battery module, an explosion-proof valve group and a heat-insulation piece. The top surface of the battery module is provided with a plurality of vent holes; the anti-explosion valve bank is arranged on one side of the battery module, and high-temperature flue gas in the battery module can flow towards the anti-explosion valve bank through the exhaust hole; the heat insulating part is installed on the top surface of the battery module, a plurality of exhaust windows capable of being opened by turning are arranged on the heat insulating part, the exhaust windows are in one-to-one correspondence with the exhaust holes, and the turning opening direction of the exhaust windows is opposite to the flowing direction of high-temperature flue gas towards the explosion-proof valve group. High temperature flue gas can be discharged through the exhaust hole, pushes up under the atmospheric pressure effect and turns over and open the exhaust window to flow towards explosion-proof valves direction, can effectively reduce the probability that high temperature flue gas flows back from adjacent air vent. The battery pack comprises the battery heat-insulation exhaust assembly, the heat-insulation exhaust effect is good, and the overall safety of the battery pack is improved.

Description

Battery heat-insulating exhaust assembly and battery pack

Technical Field

The utility model relates to a battery thermal-insulated exhaust technical field especially relates to a battery thermal-insulated exhaust subassembly and battery package.

Background

In order to improve the safety of thermal runaway of the battery module, a vent hole is usually formed in the top of the battery module for discharging high-temperature flue gas. Because the air vent mostly is the tiling of large tracts of land and arranges, high temperature flue gas is from air vent discharge back, because adjacent air vent interval is less, high temperature flue gas can get into through adjacent air vent and influence the inside and then influence electric core of battery module, is unfavorable for electric core safety. And high temperature flue gas can carry a large amount of heats when discharging from the air vent, leads to battery module top surface temperature rise too high, produces harmful effects.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery thermal-insulated exhaust subassembly and battery package to reduce high temperature flue gas backward flow probability, ensure the effective discharge of high temperature flue gas.

To achieve the purpose, the utility model adopts the following technical proposal:

in one aspect, a battery vent assembly is provided, comprising:

the top surface of the battery module is provided with a plurality of vent holes;

the explosion-proof valve bank is arranged on one side of the battery module, and high-temperature flue gas in the battery module can flow towards the explosion-proof valve bank through the exhaust hole;

the heat insulating part, install in the top surface of battery module, be provided with a plurality of exhaust windows that can turn over and turn over open on the heat insulating part, it is a plurality of the exhaust window is with a plurality of exhaust hole one-to-one, turn over of exhaust window open the direction with the high temperature flue gas court the flow direction of explosion-proof valves is opposite.

As a preferred structure of the present invention, the heat insulating member is correspondingly provided with a plurality of mounting holes, one end of the exhaust window is connected to the mounting hole, and the other end of the exhaust window is covered with the mounting hole as a free end portion.

As a preferable structure of the present invention, the length dimension L1 of the mounting hole is greater than or equal to the length dimension L2 of the exhaust hole, and the width dimension M1 of the mounting hole is greater than or equal to the width dimension M2 of the exhaust hole.

As a preferable structure of the utility model, the width dimension of the exhaust window is M3, M2 is not less than M3 is not less than M1, the length dimension of the exhaust window is L3, L2 is not less than L3 is not less than L1.

As a preferable structure of the present invention, the heat insulating member is made of an elastic heat insulating material.

As a preferred structure of the present invention, the heat insulating member is attached to the top surface of the battery module.

As a preferred structure of the utility model, explosion-proof valves includes two explosion-proof valves, two the explosion-proof valve interval set up in one side of battery module.

As a preferred structure of the utility model, the battery module with the heat insulating part is provided with two respectively, two the heat insulating part is with two the battery module one-to-one, one is arranged in to the explosion-proof valves another is kept away from to the battery module one side of battery module.

As an optimized structure of the utility model, the exhaust hole is a strip-shaped hole.

In another aspect, a battery pack is provided, which includes the battery heat insulation and exhaust assembly.

The utility model has the advantages that:

the utility model discloses a thermal-insulated piece of battery thermal-insulated exhaust subassembly can isolated battery module top surface heat, ensure thermal-insulated effect, prevent that the battery module from bringing harmful effects because of the top surface heat is too high, be provided with the exhaust hole one-to-one on the thermal-insulated piece and roll over the exhaust window of opening, when the battery module takes place thermal failure, the high temperature flue gas can be discharged through the exhaust hole, it opens the exhaust window to turn over on the top under the atmospheric pressure effect, and flow towards explosion-proof valves direction, can effectively reduce the probability that the high temperature flue gas flows back from adjacent air vent, ensure the effective discharge of high temperature flue gas.

The utility model discloses a battery package includes foretell battery exhaust subassembly that insulates against heat, and this battery package thermal failure time heat-insulating exhaust is effectual, and the whole security of battery package obtains promoting.

Drawings

Fig. 1 is a top view of a battery heat-insulating exhaust assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural installation diagram of a heat insulation member and a battery module according to an embodiment of the present invention;

fig. 3 is a partially enlarged schematic view at a in fig. 1.

In the figure:

1. a battery module; 11. an exhaust hole;

2. a thermal insulation member; 21. an exhaust window; 22. mounting holes;

3. an explosion-proof valve bank; 31. an explosion-proof valve.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-3, the utility model provides a battery thermal-insulated exhaust subassembly, including battery module 1, explosion-proof valves 3 and heat insulating part 2. The top surface of the battery module 1 is provided with a plurality of vent holes 11; the explosion-proof valve group 3 is arranged on one side of the battery module 1, and high-temperature flue gas in the battery module 1 can flow towards the explosion-proof valve group 3 through the exhaust hole 11; the heat insulation piece 2 is arranged on the top surface of the battery module 1, a plurality of exhaust windows 21 capable of being turned over and opened are arranged on the heat insulation piece 2, the exhaust windows 21 are in one-to-one correspondence with the exhaust holes 11, and the turning-over opening direction of the exhaust windows 21 is opposite to the flowing direction of high-temperature flue gas towards the explosion-proof valve group 3.

In this embodiment, as shown in fig. 1, two battery modules 1 and two heat insulators 2 are provided, the two heat insulators 2 correspond to the two battery modules 1 one by one, the two battery modules 1 are arranged in the same row and at intervals, and one heat insulator 2 is correspondingly mounted on the top surface of each of the battery modules 1. The explosion-proof valve set 3 is arranged on one side of one battery module 1 far away from the other battery module 1, and the explosion-proof valve set 3 in the embodiment is arranged on the left sides of the two battery modules 1 arranged in the same row. As shown in fig. 2, the battery module 1 is provided with a plurality of exhaust holes 11 for exhausting the high temperature flue gas, the heat insulation element 2 is provided with a foldable exhaust window 21 at a position corresponding to the exhaust holes 11, and the folding opening direction of the exhaust window 21 is opposite to the flowing direction of the high temperature flue gas toward the explosion-proof valve set 3. When battery module 1 is inside when taking place thermal failure, the high temperature flue gas can be discharged through exhaust hole 11, overturns under the atmospheric pressure and opens exhaust window 21 to 3 directions of explosion-proof valves flow, can effectively reduce the probability that the high temperature flue gas flows back from adjacent air vent, ensure the effective discharge of high temperature flue gas. It can be understood that the explosion-proof valve set 3 in this embodiment is a common explosion-proof valve for a battery in the field, when a thermal failure occurs inside the battery module 1, the high-temperature gas will flow in the direction of the explosion-proof valve set 3 after being exhausted through the exhaust hole 11 (the horizontal leftward direction in fig. 1 is the outflow direction of the high-temperature gas after passing through the exhaust hole 11), in order to prevent the high-temperature gas from generating a backflow phenomenon during the exhaust process (i.e. the high-temperature gas may flow back to the inside of the battery module 1 again through the adjacent exhaust hole 11 during the exhaust process), the thermal insulation member 2 is installed on the top surface of the battery module 1, the thermal insulation member 2 can insulate the top surface heat of the battery module 1 to ensure the thermal insulation effect, and prevent the adverse effect of the battery module 1 due to the excessively high top surface heat, the exhaust windows 21 on the thermal insulation member 2 are opposite to the exhaust holes 11 one another, when the thermal failure occurs, the high-temperature smoke can push the exhaust window 21 near the thermal failure occurrence position, the exhaust window 21 can be turned over and opened towards the horizontal direction in the right direction in fig. 1, and other exhaust windows 21 at the positions where thermal failure does not occur can still be in a closed state, so that high-temperature smoke is prevented from flowing back.

Alternatively, the heat insulating member 2 is provided with a plurality of mounting holes 22, and one end of the exhaust window 21 is connected to the mounting hole 22 and the other end thereof is used as a free end to cover the mounting hole 22. In the present embodiment, as shown in fig. 3, the heat insulator 2 has a plurality of mounting holes 22, one end of the exhaust window 21 is connected to one side of the wall of the mounting hole 22, the other end of the exhaust window 21 is a free end that can be opened and closed by turning (in fig. 3, the exhaust window 21 partially covers the mounting hole 22), and the exhaust window 21 and the mounting hole 22 are integrally molded.

Alternatively, the length dimension L1 of the mounting hole 22 is greater than or equal to the length dimension L2 of the discharge hole 11, and the width dimension M1 of the mounting hole 22 is greater than or equal to the width dimension M2 of the discharge hole 11. It can be understood that, referring to fig. 2 and fig. 3, the length and width of the installation hole 22 in this embodiment are preferably slightly larger than the length and width of the exhaust hole 11, so as to ensure the exhaust effect of the high-temperature flue gas and increase the exhaust amount of the high-temperature flue gas.

Optionally, the width dimension of the exhaust window 21 is M3, M2 is equal to or less than M3 is equal to or less than M1, the length dimension of the exhaust window 21 is L3, and L2 is equal to or less than L3 is equal to or less than L1. It will be appreciated that, with combined reference to fig. 2 and 3, the width and length dimensions of the louvers 21 in this embodiment are preferably between the corresponding ranges of width and length dimensions of the mounting holes 22 and the exhaust holes 11, such that the overall dimensions of the louvers 21 are slightly larger than the exhaust holes 11 and slightly smaller than the mounting holes 22 to ensure that the louvers 21 completely cover the exhaust holes 11.

Alternatively, the thermal insulation member 2 is made of an elastic thermal insulation material. The heat insulating material 2 in this embodiment is made of an elastic heat insulating material, and should have characteristics of high temperature resistance, long service life, and the like, and the specific type of the material may be selected with reference to an elastic heat insulating material commonly used in the battery field, and the type of the elastic heat insulating material is not particularly limited in this embodiment.

Alternatively, the heat insulator 2 is attached to the top surface of the battery module 1. Heat insulating member 2 is in this implementation through the mode fixed mounting that pastes the dress in the top surface of battery module 1, and the installation effectiveness is high and the installation effect is good, makes things convenient for batch processing production, improves machining efficiency.

Optionally, the explosion-proof valve set 3 includes two explosion-proof valves 31, and the two explosion-proof valves 31 are disposed at an interval on one side of the battery module 1. The explosion-proof valves 3 in this embodiment include two explosion-proof valves 31, and explosion-proof valve 31 is common explosion-proof part in the battery field, and under the too big condition of thermal failure battery module 1 internal gas pressure, explosion-proof valve 31 can open the pressure release automatically to the phenomenon of explosion prevents to appear.

Optionally, the exhaust holes 11 are strip-shaped holes. As shown in fig. 2, the exhaust hole 11 in this embodiment is a strip-shaped hole, in addition, the shape of the exhaust hole 11 may also be a circle or an ellipse, the shapes of the installation hole 22 and the exhaust window 21 are changed correspondingly with the shape of the exhaust hole 11, and the exhaust hole 11, the installation hole 22 and the exhaust window 21 in this embodiment are all long-strip-shaped, which is not limited to the drawings in this embodiment.

The utility model also provides a battery package, including the thermal-insulated exhaust subassembly of foretell battery, the thermal-insulated exhaust is effectual when this battery package thermal failure, and the whole security of battery package has obtained showing and has promoted.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery vent assembly, comprising:

the battery module (1), the top surface of the battery module (1) is provided with a plurality of vent holes (11);

the anti-explosion valve group (3) is arranged on one side of the battery module (1), and high-temperature flue gas in the battery module (1) can flow towards the anti-explosion valve group (3) through the exhaust hole (11);

the battery module comprises a battery module body (1), a heat insulation piece (2), a plurality of exhaust windows (21) which can be opened in a turnover mode are arranged on the heat insulation piece (2), the exhaust windows (21) are in one-to-one correspondence with exhaust holes (11), and the turnover opening direction of the exhaust windows (21) is opposite to the flowing direction of the explosion-proof valve set (3).

2. The battery heat-insulating exhaust assembly according to claim 1, wherein a plurality of mounting holes (22) are correspondingly formed in the heat-insulating member (2), one end of the exhaust window (21) is connected to the mounting hole (22), and the other end of the exhaust window serves as a free end portion to cover the mounting hole (22).

3. The battery vent assembly of claim 2, wherein the length dimension L1 of the mounting hole (22) is greater than or equal to the length dimension L2 of the vent hole (11), and the width dimension M1 of the mounting hole (22) is greater than or equal to the width dimension M2 of the vent hole (11).

4. The battery vent assembly of claim 3, wherein the vent window (21) has a width dimension of M3, M2M 3M 1, and a length dimension of L3, L2L 3L 1.

5. The battery vent assembly according to claim 1, wherein the thermal insulator (2) is made of an elastic thermal insulating material.

6. The battery heat-insulating exhaust assembly according to claim 1, wherein the heat-insulating member (2) is attached to the top surface of the battery module (1).

7. The battery heat insulation and exhaust assembly according to claim 1, wherein the explosion-proof valve set (3) comprises two explosion-proof valves (31), and the two explosion-proof valves (31) are arranged on one side of the battery module (1) at intervals.

8. The battery heat-insulation exhaust assembly according to claim 1, wherein the number of the battery modules (1) and the number of the heat-insulation pieces (2) are two, the two heat-insulation pieces (2) correspond to the two battery modules (1) one by one, and the explosion-proof valve group (3) is arranged on one side of one battery module (1) far away from the other battery module (1).

9. The battery heat-insulating exhaust assembly according to claim 1, wherein the exhaust holes (11) are strip-shaped holes.

10. A battery pack comprising the battery vent assembly of any of claims 1-9.