CN212914289U

CN212914289U - Battery heat-packing tube device with fire extinguishing and heat conducting functions

Info

Publication number: CN212914289U
Application number: CN202021476042.XU
Authority: CN
Inventors: 刘桃松; 李敏; 陈建; 陈冬; 党志敏; 张巡蒙; 王羽平; 张焱; 蒋岚
Original assignee: Zhejiang Narada Power Source Co Ltd
Current assignee: Zhejiang Narada Power Source Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-09
Anticipated expiration: 2030-07-23

Abstract

The utility model belongs to the field of battery safety, in particular to a battery pack heat pipe device with the functions of fire extinguishing and heat conduction, which comprises a heat pipe set with a heat pipe structure and a medicament container arranged at the lower part of the heat pipe set, wherein the heat pipe set is enclosed into a flat-bottomed U-shaped space, and an electric core groove for placing an electric core is arranged in the U-shaped space; the heat pipe component comprises an evaporation section in contact with the battery core, a heat insulation section at the upper part of the evaporation section and a condensation section at the upper part, wherein the evaporation section is in contact with the medicament container at the same time; the device also comprises a spray pipe component connected with the upper part of the heat pipe set, and after the device is heated and reaches the upper limit of temperature bearing, the medicament is sprayed out of the spray pipe component. The device direct mount is in the battery package to with electric core direct contact, its heat conduction function of electric core normal during operation the device performance prevents that electric core temperature from being too high, when electric core catches fire or unusual intensification, the inside medicament blowout of the device, in order to realize the fire control function.

Description

Battery heat-packing tube device with fire extinguishing and heat conducting functions

Technical Field

The utility model belongs to battery safety field specifically is a battery package heat pipe device with put out a fire and heat conduction function.

Background

The battery pack and the battery module are generally placed in a sealed shell, and abnormal temperature and uneven temperature of individual battery cores can occur in the using process; the heat accumulation of the battery pack is difficult to dissipate, so that the thermal runaway of the battery, even the burning on fire and the like are caused. And traditional battery package can only be through the shell natural heat conduction, and the heat conduction effect of this mode is not good, the temperature difference between the electric core increases. When the battery is out of control due to heat, the battery is easy to ignite and burn, and people can intervene in the fire extinguishing operation after ignition and burning for a certain time. Due to the blocking of the battery pack, the fire extinguishing agent is difficult to reach the battery core, and the fire extinguishing effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery package heat pipe device with put out a fire and heat conduction function, the device direct mount are in the battery package to with electric core direct contact, its heat conduction function of electric core normal during operation the device performance prevents that electric core temperature is too high, when electric core catches fire or unusual intensification, the inside medicament blowout of the device, in order to realize the fire control function.

In order to achieve the above object, the utility model provides a following technical scheme: a battery pack heat pipe device with fire extinguishing and heat conducting functions comprises a heat pipe set with a heat pipe structure and a medicament container arranged at the lower part of the heat pipe set, wherein the heat pipe set is enclosed into a flat-bottom U-shaped space, and a battery cell groove for placing a battery cell is arranged in the U-shaped space; the heat pipe structure comprises a shell with a built-in cavity arranged inside, a capillary liquid absorption layer is arranged in the built-in cavity, and the built-in cavity of the heat pipe group is communicated with the inside of the medicament container; the medicine container is filled with medicine and supplies the medicine to the heat pipe set; the heat pipe component comprises an evaporation section in contact with the battery core, a heat insulation section at the upper part of the evaporation section and a condensation section at the upper part, wherein the evaporation section is in contact with the medicament container at the same time; the device also comprises a spray pipe component connected with the upper part of the heat pipe set, and after the device is heated and reaches the upper limit of temperature bearing, the medicament is sprayed out of the spray pipe component.

In the technical scheme, the heat pipe set is communicated with the interior of the medicament container, namely the medicament container and the heat pipe share the medicament, when the battery cell works normally in the U-shaped space, the medicament in the medicament container can supply the requirement of the heat pipe set on the medicament, so that the stability of the heat pipe set is ensured, and the heat pipe device is ensured to normally play a heat conduction function at ordinary times; when the electric core temperature is too high, the medicament in medicament container and the evaporation section evaporates fast to make the inside pressure of heat pipe set increase, when atmospheric pressure reached the default, the medicament passes through spray tube subassembly blowout, and these medicaments can cool down and put out a fire, thereby reach the purpose of timely fire control.

Preferably, the heat pipe set is formed by arranging a plurality of independent heat pipes, the production cost can be saved by directly constructing the heat pipe set by utilizing the existing heat pipes, and each heat pipe can independently realize the heat conduction function, so that the device has better stability.

Preferably, set up a plurality of baffles in the U type space, the baffle is used for placing electric core and with every electric core one-to-one mouthful of separating of electric core groove evenly cut apart into with electric core groove, with single electric core direct mount in separating mouthful, improves the installation stability of electric core.

Preferably, the partition plate is provided with a heat pipe structure, the lower part of the partition plate is communicated with the heat pipe structure of the heat pipe set and is also divided into an evaporation section, a heat insulation section and a condensation section, the electric core placed in the partition plate has a larger contact area with the heat pipe structure, the sensitivity of the device to temperature is improved, the heat conduction efficiency can be increased, the temperature can be timely reduced, the injection amount of the medicament in unit time can be increased, and the fire extinguishing speed is further improved.

Preferably, the nozzle assembly comprises a nozzle body and a blocking piece arranged on the nozzle body, when the temperature in the battery pack rises to a preset value, the temperature causes the blocking piece to be damaged, and the medicament is sprayed out of the nozzle assembly.

Preferably, the nozzle assembly further comprises a capillary pressure relief block, capillary holes are formed in the capillary pressure relief block, and the medicament firstly passes through the capillary pressure relief block, then passes through the blocking piece and is ejected. When the medicament is sprayed out in a steam form, the pressure of high-pressure steam is reduced after passing through the capillary pressure relief block, and the steam has lower temperature and is beneficial to reducing the environmental temperature.

Preferably, the blocking piece is one of a metal film, a fire detection pipe, a temperature-sensitive glass ball sealing nozzle and a pressing valve component. The metal film is broken under high pressure, and can be automatically broken and put out a fire only when the internal air pressure of the device reaches a preset value; the fire-detecting pipe or the temperature-sensing glass ball sealing nozzle needs to be broken under the direct influence of high temperature, when the position of the spray pipe assembly catches fire or the temperature is too high, the spray pipe assembly is directly opened, and the medicament is sprayed out in advance when the air pressure inside the device does not reach a preset value, so that timely fire fighting is realized.

Preferably, the pressing valve assembly comprises a pressing valve, the periphery of the pressing valve is sleeved with a heat shrinkage pipe sleeve, and the heat shrinkage pipe sleeve is heated to shrink and presses down the pressing valve. When the position of the spray pipe assembly catches fire or the temperature is too high, the heat-shrinkable tube sleeve shrinks and opens the pressing valve, and then the spray pipe assembly is opened.

Preferably, the nozzle assembly further comprises an extension pipe, the nozzle body is connected with the heat pipe set through the extension pipe, and the nozzle assembly can be installed at any position through the extension pipe, so that the fire extinguishing function of the device can be better exerted.

Preferably, the agent is heptafluoropropane or hexafluoropropane or perfluorohexanone.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic plan view of an embodiment of the present invention.

Fig. 2 is a schematic view of a first structure of a nozzle assembly according to an embodiment of the present invention.

Fig. 3 is a schematic view of a second structure of a spout assembly according to an embodiment of the present invention.

In the figure, a heat pipe set 1, a medicament container 2, a medicament 3, a cell groove 4, an evaporation section 5, a heat insulation section 6, a condensation section 7, a heat conduction plate 8, a spray pipe assembly 9, a cell 10, a heat pipe interlayer 11, a spray pipe body 91, a capillary pressure relief block 92, a temperature-sensitive glass ball valve 93, an extension pipe 94, a pressing valve 95 and a heat-shrinkable pipe sleeve 96.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Fig. 1 is a battery pack heat pipe device with fire extinguishing and heat conducting functions provided by the utility model, the device comprises a heat pipe set 1 with a heat pipe structure and a medicament container 2 arranged at the lower part of the heat pipe set 1, and the heat pipe set 1 encloses a flat-bottomed U-shaped space, and a cell slot 4 for placing a cell is arranged inside the U-shaped space; the heat pipe structure comprises a shell with a built-in cavity, a capillary liquid absorption layer is arranged in the built-in cavity, the built-in cavity of the heat pipe set 1 is communicated with the inside of the medicament container 2, evaporation and condensation of a medicament 3 (heptafluoropropane, hexafluoropropane or perfluorohexanone) can be completed inside the heat pipe structure, and a heat conduction function is achieved in the process. Wherein the medicament 3 is mainly contained inside the medicament container 2 and supplies the heat pipe set 1 with medicament.

According to the heat pipe heat conduction principle, the heat pipe set 1 is divided into an evaporation section 5 contacting with the battery core, a heat insulation section 6 on the upper part of the evaporation section 5, and a condensation section 7 on the upper part, wherein the evaporation section 5 contacts with the medicament container 2 at the same time, and in the embodiment, in order to improve the heat conduction efficiency between the battery core and the heat pipe set, a heat conduction plate 8 is arranged between the battery core 10 and the heat pipe set 1. The device also comprises a nozzle assembly 9 connected to the upper part of the heat pipe set 1, a nozzle body 91 is connected to the heat pipe set 1 through an extension pipe 94, and the nozzle assembly 9 can be installed at any position by means of the extension pipe 94. After the device is heated and reaches the upper temperature limit, the medicament 3 is ejected from the nozzle assembly 9.

In the technical scheme, the heat pipe set 1 is communicated with the medicine container 2, namely the medicine container 2 and the medicine container 1 share the medicine 3, when the electric core works normally in the U-shaped space, the medicine 3 in the medicine container 2 can supply the medicine 3 required by the heat pipe set 1, so that the stability of the heat pipe set is ensured, and the heat pipe device is ensured to normally play a heat conduction function at ordinary times; when the temperature of the battery core 10 is too high, the medicaments in the medicament container 2 and the evaporation section 5 are quickly evaporated, the internal pressure of the heat pipe set 1 is increased, when the air pressure reaches a preset value, the medicaments 3 are sprayed out through the spray pipe assembly 9, and the medicaments can be cooled and put out a fire, so that the aim of timely fire fighting is fulfilled.

In order to increase the performance of the device, a plurality of heat pipe interlayers 11 with heat pipe structures are arranged in the U-shaped space, the lower parts of the heat pipe interlayers 11 are communicated with the heat pipe structures of the heat pipe set 1 and are also divided into an evaporation section 5, a heat insulation section 6 and a condensation section 7, the electric core arranged in the heat insulation section has larger contact area with the heat pipe structures, the sensitivity of the device to temperature is improved, the heat conduction efficiency can be increased, the temperature can be timely reduced, the injection amount of the medicament 3 in unit time can be increased, and the fire extinguishing speed is further improved.

Regarding the heat pipe structure, this embodiment adopts current circular heat pipe to arrange to constitute, and the heat pipe group 1 is inside to include many heat pipes, and this can save manufacturing cost, and every heat pipe can all independently realize the heat conduction function, makes the device have better stability. Alternatively, the heat pipe group 1 may be formed by directly manufacturing a flat plate-shaped heat pipe structure and joining and combining the plate-shaped heat pipes.

As for the spout assembly 9, the first embodiment adopts the structure of the spout body 91 and the temperature sensitive glass ball seal head, as shown in fig. 2, and the capillary relief block 92 is provided in the spout body 91. The temperature sensing glass ball sealing nozzle is broken due to high temperature, so that the medicament is sprayed out, and when the medicament 3 is sprayed out in a steam form, the pressure of high-pressure steam is reduced after the high-pressure steam passes through the capillary pressure release block 92, and at the moment, the steam has lower temperature and is beneficial to reducing the environmental temperature. The temperature-sensitive glass ball sealing nozzle can also be replaced by a pressing valve assembly, which specifically comprises a pressing valve 95 and a heat-shrinkable tube sleeve 96 sleeved on the pressing valve 95, as shown in fig. 3, the heat-shrinkable tube sleeve 96 shrinks after being heated, and the pressing valve 95 is opened. Above-mentioned two kinds of spray tube subassembly 9 are directly triggered and are opened by the temperature, to the phenomenon that spray tube subassembly department high temperature or catch fire, this kind of spray tube subassembly can in time respond to and start the function of putting out a fire. Temperature sensing glass ball seals shower nozzle and presses the valve subassembly and all directly triggers by high temperature, also can adopt other alternative structures, for example adopt metal film, and the high temperature of electricity core makes 3 quick rapid evaporation of medicament, just makes metal film break when device inside atmospheric pressure reaches the default, and the medicament blowout is and begin to put out a fire this moment.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a battery package heat pipe device with put out a fire and heat conduction function which characterized in that: the device comprises a heat pipe set with a heat pipe structure and a medicament container arranged at the lower part of the heat pipe set, wherein the heat pipe set surrounds a flat-bottom U-shaped space, and a battery cell groove for placing a battery cell is arranged in the U-shaped space; the heat pipe structure comprises a shell with a built-in cavity arranged inside, a capillary liquid absorption layer is arranged in the built-in cavity, and the built-in cavity of the heat pipe group is communicated with the inside of the medicament container; the medicine container is filled with medicine and supplies the medicine to the heat pipe set; the heat pipe component comprises an evaporation section in contact with the battery core, a heat insulation section at the upper part of the evaporation section and a condensation section at the upper part, wherein the evaporation section is in contact with the medicament container at the same time; the device also comprises a spray pipe component connected with the upper part of the heat pipe set, and after the device is heated and reaches the upper limit of temperature bearing, the medicament is sprayed out of the spray pipe component.

2. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 1, wherein: the heat pipe set is formed by arranging a plurality of independent heat pipes, wherein the upper ends of the heat pipes are communicated.

3. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 1, wherein: a plurality of partition plates are arranged in the U-shaped space, and the partition plates divide the battery cell groove into partition openings which are used for placing the battery cells and correspond to the battery cells one by one.

4. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 3, wherein: the partition plate is provided with a heat pipe structure, the lower part of the partition plate is communicated with the heat pipe structure of the heat pipe set, and the partition plate is also divided into an evaporation section, a heat insulation section and a condensation section.

5. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 1, wherein: the spray pipe assembly comprises a spray pipe body and a plugging piece arranged on the spray pipe body, when the temperature in the battery pack rises to a preset value, the plugging piece is damaged by the temperature, and the medicament is sprayed out of the spray pipe assembly.

6. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 5, wherein: the spray pipe assembly further comprises a capillary pressure relief block, capillary holes are formed in the capillary pressure relief block, and the medicament firstly passes through the capillary pressure relief block and then passes through the blocking piece to be sprayed out.

7. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 5, wherein: the plugging piece is one of a metal film, a fire detection pipe, a temperature sensing glass ball sealing nozzle and a pressing valve component.

8. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 7, wherein: the press valve assembly comprises a press valve, a heat-shrinkable tube sleeve is sleeved on the periphery of the press valve, and the heat-shrinkable tube sleeve is heated to shrink and presses the press valve.

9. The battery pack heat pipe device with the functions of fire extinguishing and heat conducting as claimed in any one of claims 5 to 8, wherein: the spray pipe assembly further comprises an extension pipe, and the spray pipe body is connected with the heat pipe set through the extension pipe.

10. The battery pack heat pipe device with fire extinguishing and heat conducting functions as claimed in claim 9, wherein: the medicament is heptafluoropropane or hexafluoropropane or perfluorohexanone.