CN216755255U

CN216755255U - Fire extinguishing device and battery pack

Info

Publication number: CN216755255U
Application number: CN202220344599.0U
Authority: CN
Inventors: 顾晓瑜; 刘超; 李进; 宁大雕; 梅骜
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-06-17
Anticipated expiration: 2032-02-18

Abstract

The application provides a extinguishing device and battery package relates to power battery's technical field. Extinguishing device is applied to the battery package, and the battery package has the end cover, and extinguishing device includes: the spraying assembly is provided with an accommodating space, and fire extinguishing media are configured in the accommodating space; and at least one part of the fixing component is arranged between the end cover and the spraying component so as to connect the spraying component to the end cover. Spray assembly passes through fixed subassembly fixed connection on the end cover, when can taking place thermal runaway to the battery package, releases the medium of putting out a fire, realizes the function of putting out a fire, simultaneously, under the violent collision and the vibration condition, spray assembly still can be fixed through fixed subassembly, the disappearance takes place the interference phenomenon with battery pack's battery module and electrical part.

Description

Fire extinguishing device and battery pack

Technical Field

The application relates to the technical field of power batteries, in particular to a fire extinguishing device and a battery pack.

Background

The attention on environmental protection, technical progress and energy safety problems in the world makes new energy become one of the most popular topics in the present, wherein a battery is one of the new energy, and the battery is widely applied to electronic devices, such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools and the like.

In the technology of the battery, the battery performance problem and the safety of the battery need to be considered, and for safety, a spraying device is generally arranged in a battery pack so as to extinguish fire when the thermal runaway of the battery occurs.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a extinguishing device and battery package, aims at solving and how to carry out the technical problem of installation fixed to spray set.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the application provides a extinguishing device is applied to the battery package, the battery package has the end cover, extinguishing device includes: the spraying assembly is provided with an accommodating space, and a fire extinguishing medium is arranged in the accommodating space; and at least one part of the fixing component is arranged between the end cover and the spraying component so as to connect the spraying component to the end cover.

At the in-process of above-mentioned realization, spray assembly passes through fixed subassembly fixed connection on the end cover, when can taking place the thermal runaway to the battery package, releases the medium of putting out a fire, realizes the function of putting out a fire, simultaneously, under the violent collision and the vibration condition, spray assembly still can be fixed through fixed subassembly, the battery module and the electrical part emergence interference phenomenon with the battery package do not appear.

In some embodiments, the fixing assembly includes a first fixing member, and at least a portion of the first fixing member is configured to penetrate through the end cover and form a connection with the spray assembly to fix the spray assembly.

At the in-process of above-mentioned realization, wear to locate spray assembly through first mounting, can carry out spacing on vertical direction and the horizontal direction to spray assembly under the violent collision and the vibration condition appear, make its safe and reliable be fixed in the end cover on, it is also convenient to install.

In some embodiments, the first fixing element includes a penetrating element and a fitting element adapted to the penetrating element, the penetrating element is used for penetrating the end cover and the spraying assembly, and the fitting element is used for fastening the spraying assembly.

In the process of above-mentioned realization, through wearing to establish the cooperation with the fitting piece, can realize being connected of the end cover of spray assembly and battery package, and the different battery package of adaptation, the price/performance ratio is high with technology operability.

In some embodiments, the first fixing member further includes a gasket, and the gasket is sleeved on the through-penetrating member so as to be attached to the surface of the spraying assembly when the spraying assembly is fastened.

In the process of above-mentioned realization, establish the gasket through the cover on wearing to establish the piece for when fastening spray assembly, can increase area of contact, reduce pressure prevents not hard up, also can avoid first mounting to cause the damage to spray assembly.

In some embodiments, the fixing assembly further includes a second fixing member disposed on the spraying assembly and disposed corresponding to the first fixing member for the first fixing member to penetrate therethrough.

In the process of the realization, the second fixing part is fixed on the spray assembly, and the first fixing part is arranged in a penetrating way on the second fixing part, so that when the spray assembly is fastened, the second fixing part can play a role in strengthening the fixation, and meanwhile, the mechanical strength and the dimensional stability of the spray assembly can also be improved.

In some embodiments, the securing assembly further comprises an adhesive disposed on a surface of the spray assembly and/or the end cap for securing the spray assembly to the end cap.

At the in-process of above-mentioned realization, through setting up the adhesive for the whole surface and the end cover laminating of spray assembly can prevent that the battery package from taking place at the in-process spray assembly's that uses circumstances such as deformation, makes spray assembly and battery pack's battery module and electrical part not take place to interfere, guarantees durable, safety and practicality.

In some embodiments, the fixing assembly further includes a third fixing member disposed on a side of the spray assembly away from the end cap, and the third fixing member abuts against the spray assembly.

At the in-process of above-mentioned realization, through setting up the third mounting for the battery package is at the in-process that uses, and the third mounting can keep the butt always with spray assembly, avoids spray assembly's deformation, guarantees that spray assembly safe and reliable is fixed in the battery package.

In some embodiments, the fixing assembly further comprises a buffer layer disposed between the third fixing member and the shower assembly.

At the in-process of above-mentioned realization, through setting up the buffer layer, can be at the in-process that the battery package used, can play the effect of buffering to spray assembly, when reducing the damage to spray assembly, also can avoid spray assembly's deformation.

In some embodiments, the securing assembly further comprises a third securing member, one end of the third securing member being configured to connect with the end cap, and the third securing member being located at an outer edge of the spray assembly to form an abutment against the spray assembly.

In the process of realizing, the third fixing piece is directly connected with the end cover and is configured at the outer edge of the spraying assembly, so that the horizontal shaking of the spraying assembly can be avoided, and the durability, the safety and the practicability are ensured.

The present application further provides a battery pack, including: a box body having a placement space; a plurality of battery modules configured in the placing space; a battery management system disposed in the placement space; and the fire extinguishing device is characterized in that a spraying component of the fire extinguishing device is arranged between the battery module and an end cover of the box body, and at least one part of a fixing component of the fire extinguishing device is arranged at the end cover corresponding to the battery management system.

In the process of realizing the fire extinguishing device, the spraying assembly is arranged between the battery module and the end cover, so that the fire can be extinguished when the battery module is out of thermal control, and meanwhile, the spraying assembly can be prevented from falling off from the end cover through the fixed assembly of the fire extinguishing device, and the spraying assembly is prevented from interfering with the battery module and a battery management system.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a fire extinguishing apparatus disclosed in an embodiment of the present application.

Fig. 2 is a partial structural schematic diagram of a fire extinguishing apparatus disclosed in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a fixing assembly of a fire extinguishing apparatus according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a spraying assembly of a fire extinguishing apparatus disclosed in an embodiment of the application.

Fig. 5 is a schematic structural diagram of a third fixing member of a fire extinguishing apparatus according to an embodiment of the present application.

Fig. 6 is a schematic view of the connection of the fire extinguishing apparatus disclosed in the embodiment of the present application to the end cap.

Reference numerals

100. A spray assembly; 200. a fixing assembly; 201. a first fixing member; 2011. a member is arranged in a penetrating way; 2012. a mating member; 2013. a gasket; 202. a second fixing member; 203. a third fixing member; 204. a buffer layer; 300. and (4) end covers.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, 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 or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.

Examples

Under the background that batteries are used as one kind of new energy, and large motor vehicles in all countries and all enterprises in the world are also developing new energy electric vehicles as main transportation tools for replacing original fuel vehicles, the energy density of lithium ion batteries used by the new energy electric vehicles is continuously improved, the battery scale is continuously enlarged, and the thermal runaway risk and the damage degree of the lithium ion batteries are increased while the endurance mileage is increased.

The inventor finds in the process of designing that the spraying device is a device for processing the thermal runaway of the battery and is fixedly arranged in the battery pack, but when the battery pack is in high-speed movement, collision process and durable, the spraying device has the phenomena of falling off, deformation, interference with a battery module at the bottom and power generation of electric devices, and the like.

In view of the above, as shown in fig. 1, fig. 1 is a schematic structural diagram of a fire extinguishing apparatus disclosed in an embodiment of the present application; the application provides a fire extinguishing apparatus is applied to the battery package, the battery package has end cover 300, fire extinguishing apparatus includes: the battery pack comprises a spraying assembly 100 and a fixing assembly 200, wherein the spraying assembly 100 is configured on an end cover 300 of the battery pack, and the fixing assembly 200 is used for fixing the spraying assembly 100 and the end cover 300 and ensuring the stability of the spraying assembly 100.

Specifically, the spray assembly 100 has an accommodating space in which a fire extinguishing medium is disposed; at least a portion of the fixing member 200 is configured between the end cap 300 and the spray member 100, such that the spray member 100 is coupled to the end cap 300.

Illustratively, the spraying assembly 100 comprises a sandwich plate and a fire extinguishing medium arranged inside the sandwich plate, when the battery is out of control due to heat, the sandwich plate can be punctured by using flame sprayed by the battery, so as to release the fire extinguishing medium and successfully block the effect of heat spreading, wherein the shape and size of the sandwich plate can be set according to the end cover 300 of the battery pack in actual conditions, that is, the sandwich plate can be made into a geometric rectangle according to the size of the end cover 300, and after a platform structure is formed, the spraying assembly can be matched with various vehicle types, so that the cost performance of the fire extinguishing device is improved, and the process operability is high; the fire extinguishing medium includes, but is not limited to, a fire extinguishing agent, and may be a combination of a fire extinguishing agent and compressed gas.

The fixing assembly 200 may include a plurality of fixing assemblies 200, and the fixing assemblies 200 sequentially penetrate the end cap 300 and the spraying assembly 100, or may include two parts, one of which is disposed between the fixing assemblies 200 and the end cap 300, and the other of which is disposed between the end cap 300 and the spraying assembly 100; certainly, it is not excluded that the fixing assembly 200 is provided in three parts, one of which is disposed between the fixing assembly 200 and the end cap 300, the other is used to penetrate the end cap 300 and the spraying assembly 100, one end of the last part is connected to the end cap 300 (or the spraying assembly 200), and the other end is abutted to the spraying assembly 200 (when one end is connected to the spraying assembly 200, the other end is abutted to the end cap 300).

At the in-process of above-mentioned realization, spray assembly 100 through fixed subassembly 200 fixed connection on end cover 300, when can taking place thermal runaway to the battery package, the medium of putting out a fire is released, realizes the function of putting out a fire, simultaneously, under violent collision and vibration condition, spray assembly 100 still can be fixed through fixed subassembly 200, the battery module and the electrical part emergence interference phenomenon with the battery package do not appear.

Referring to fig. 2 and 3, the fixing assembly 200 includes a first fixing member 201, at least a portion of the first fixing member 201 is disposed through the end cover 300 and connected to the spraying assembly 100 to fix the spraying assembly 100, that is, the end cover 300 is located above the spraying assembly 100, one end of the first fixing member 201 is sequentially disposed through the end cover 300 and the spraying assembly 100 and extends to the lower side of the spraying assembly 100 to be fastened, so that one end of the first fixing member 201 is connected to the spraying assembly 100, and the other end of the first fixing member 201 is abutted to the upper surface of the end cover 300, and the spraying assembly 100 can be vertically and horizontally limited under severe collision and vibration, so that the spraying assembly 100 is safely and reliably fixed to the end cover 300, and is convenient to install.

Referring to fig. 3, the first fixing member 201 includes a penetrating member 2011 and a fitting member 2012 matched with the penetrating member 2011, the penetrating member 2011 is used for penetrating the end cap 300 and the spraying assembly 100, and the fitting member 2012 is used for fastening the spraying assembly 100.

Illustratively, the penetrating members 2011 include but are not limited to screws, the fitting members 2012 include but are not limited to nuts, the screws penetrate through the end cap 300 and the spraying assembly 100 and are fastened through the nuts, so that the spraying assembly 100 can be connected with the end cap 300 of the battery pack, and the battery pack can be adapted to different battery packs, and the cost performance and the process operability are high.

Referring to fig. 3 again, the first fixing member 201 further includes a gasket 2013, and the gasket 2013 is sleeved on the penetrating member 2011, so that when the spraying assembly 100 is fastened, the gasket 2013 is attached to the surface of the spraying assembly 100.

In the process of the above implementation, the gasket 2013 is sleeved on the penetrating piece 2011, so that when the spraying assembly 100 is fastened, the contact area can be increased, the pressure is reduced, looseness is prevented, and damage to the spraying assembly 100 caused by the first fixing piece 201 can be avoided.

As shown in fig. 4, fig. 4 is a schematic structural diagram of a sprinkler assembly 100 of a fire extinguishing apparatus disclosed in an embodiment of the present application; the fixing assembly 200 further includes a second fixing member 202, and the second fixing member 202 is disposed on the spray assembly 100 and is disposed corresponding to the first fixing member 201, so as to be used for the first fixing member 201 to penetrate therethrough. For example, the second fixing elements 202 include, but are not limited to, welding points, and the second fixing elements 202 are distributed on both the upper surface and the lower surface of the shower assembly 100, although it is not excluded that only one surface of the shower assembly 100 is provided, wherein a plurality of the second fixing elements 202 are provided, and simulation tests can be performed to obtain the arrangement positions and the number of the second fixing elements 202.

In the process of the above implementation, the second fixing member 202 is fixed on the spraying assembly 100, and the first fixing member 201 is arranged in the second fixing member 202 in a penetrating manner, so that when the spraying assembly 100 is fastened, the second fixing member 202 can play a role in reinforcing the fixing, and meanwhile, the mechanical strength and the dimensional stability of the spraying assembly 100 can also be improved.

In order to further improve the stability of the spray assembly 100, the fixing assembly 200 further comprises an adhesive, the adhesive is disposed on the surface of the spray assembly 100 and/or the end cover 300 to be used for fixing the spray assembly 100 and the end cover 300, and the adhesive is disposed to enable the whole surface of the spray assembly 100 to be attached to the end cover 300, so that the conditions such as deformation of the spray assembly 100 in the use process of the battery pack can be prevented, the spray assembly 100 is enabled not to interfere with the battery module and the electric device of the battery pack, and durability, safety and practicability are ensured.

As shown in fig. 5, fig. 5 is a schematic structural diagram of a third fixing member 203 of a fire extinguishing apparatus disclosed in an embodiment of the present application; the fixing assembly 200 further includes a third fixing member 203, the third fixing member 203 is disposed on a side of the spray assembly 100 away from the end cap 300, and the third fixing member 203 abuts against the spray assembly 100; the third fixing member 203 includes, but is not limited to, a bracket, the number of the third fixing members 203 can be adjusted according to the envelope structure of the battery pack, and by arranging the third fixing members 203, the third fixing members 203 can always keep abutting against the spray assembly 100 in the using process of the battery pack, so that the deformation of the spray assembly 100 is avoided, and the spray assembly 100 is safely and reliably fixed in the battery pack.

Referring to fig. 5, the fixing assembly 200 further includes a buffer layer 204, the buffer layer 204 is disposed between the third fixing member 203 and the spraying assembly 100, and the buffer layer 204 is disposed to buffer the spraying assembly 100 during the use of the battery pack, so as to reduce damage to the spraying assembly 100 and prevent deformation of the spraying assembly 100.

As shown in fig. 6, fig. 6 is a schematic view of the connection of the fire extinguishing apparatus disclosed in the embodiment of the present application to the end cap 300; the fixing assembly 200 further comprises a third fixing member 203, one end of the third fixing member 203 is configured to be connected with the end cap 300, and the third fixing member 203 is located at the outer edge of the shower assembly 100 to form an abutment for the shower assembly 100. Illustratively, the third fixing member 203 includes, but is not limited to, a bracket, the number of the third fixing members 203 can be adjusted according to the envelope structure of the battery pack, and by directly connecting the third fixing members 203 to the end cap 300 and disposing the third fixing members 203 at the outer edge of the spray assembly 100, the horizontal shaking of the spray assembly 100 can be avoided, and the durability, safety and practicability can be ensured.

The present application further provides a battery pack, including: a box body having a placement space; a plurality of battery modules configured in the placing space; a battery management system disposed in the placement space; and the fire extinguishing apparatus as described above, the sprinkler assembly 100 of the fire extinguishing apparatus is disposed between the battery module and the end cap 300 of the case, and at least a part of the fixing assembly 200 of the fire extinguishing apparatus is disposed at the end cap 300 corresponding to the battery management system, that is, the third fixing member 203 of the fixing assembly 200 is disposed at the end cap 300 corresponding to the battery management system.

For example, the distribution area of the spraying assembly 100 should be not smaller than the distribution areas of the plurality of battery modules, so that when a thermal runaway occurs in a battery, the fire extinguishing medium can be sprayed to the battery in time, the thermal runaway battery in the thermal runaway battery module is cooled by the fire extinguishing medium sprayed out of the fire extinguishing device, and at the moment, the whole process from the thermal runaway occurring in the battery to the fire extinguishing by the fire extinguishing medium belongs to a passive triggering process and does not need a control system.

In the process of the implementation, the spray assembly 100 is arranged between the battery module and the end cover 300, so that the fire can be extinguished when the battery module is out of thermal control, and meanwhile, the spray assembly 100 can be prevented from falling off from the end cover 300 through the fixing assembly 200 of the fire extinguishing device, so that the spray assembly 100 is prevented from interfering with the battery module and the battery management system.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fire extinguishing apparatus applied to a battery pack having an end cover, the fire extinguishing apparatus comprising:

the spraying assembly is provided with an accommodating space, and a fire extinguishing medium is arranged in the accommodating space;

and at least one part of the fixing component is arranged between the end cover and the spraying component so as to connect the spraying component to the end cover.

2. The fire suppression apparatus of claim 1, wherein the securing assembly comprises a first securing member, at least a portion of the first securing member configured to extend through the end cap and form a connection with the spray assembly to secure the spray assembly.

3. The fire extinguishing apparatus of claim 2, wherein the first fixing member includes a penetrating member for penetrating the end cap and the spray assembly and a fitting member adapted to the penetrating member for fastening the spray assembly.

4. The fire extinguishing apparatus of claim 3, wherein the first fixing member further comprises a gasket, and the gasket is sleeved on the penetrating member so as to be attached to the surface of the spraying assembly when the spraying assembly is fastened.

5. The fire extinguishing apparatus of claim 2, wherein the fixing assembly further comprises a second fixing member disposed on the spray assembly and disposed corresponding to the first fixing member for the first fixing member to pass through.

6. The fire suppression apparatus of claim 2 or 5, wherein the securing assembly further comprises an adhesive disposed on a surface of the spray assembly and/or the end cap for securing the spray assembly to the end cap.

7. The fire suppression apparatus of claim 6, wherein the securing assembly further comprises a third securing member disposed on a side of the spray assembly facing away from the end cap, the third securing member abutting the spray assembly.

8. The fire suppression apparatus of claim 7, wherein the securing assembly further comprises a cushioning layer disposed between the third securing member and the spray assembly.

9. The fire suppression apparatus of claim 6, wherein the securing assembly further comprises a third securing member, one end of the third securing member configured to connect with the end cap, and the third securing member located at an outer edge of the spray assembly to form an abutment to the spray assembly.

10. A battery pack, comprising:

a case body having a placing space

A plurality of battery modules configured in the placing space;

a battery management system disposed in the placement space; and

the fire extinguishing apparatus of any one of claims 1-9, wherein a spray assembly of the fire extinguishing apparatus is disposed between the battery module and an end cap of the housing, and a structure of at least a portion of a fixing assembly of the fire extinguishing apparatus is disposed at the corresponding end cap of the battery management system.