CN220856690U - Battery package spray system and battery package that has it - Google Patents

Abstract

The utility model discloses a spraying system of a battery pack and the battery pack with the same, wherein the spraying system comprises: the spray pipe is arranged in the battery pack, and a water spray opening can be formed after the spray pipe is heated; the liquid storage device comprises a liquid storage piece and a first pipe, wherein a liquid storage cavity is formed in the liquid storage piece, and the liquid storage piece is communicated with the spray pipe through the first pipe; a pressurizing mechanism having a volume-adjustable pressurizing chamber in communication with the reservoir chamber, the pressurizing mechanism configured to: when the volume of the pressurizing cavity is reduced, the liquid in the liquid storage cavity is pressed into the spray pipe through the air pressure in the pressurizing cavity. According to the battery pack spraying system, the pressurizing mechanism is provided with the pressurizing cavity which is communicated with the liquid storage cavity and has the adjustable volume, the pressurizing cavity is reduced in volume so as to realize pressurizing spraying on the battery pack, the structure is simple, and the spraying system is low in cost.

Description

Battery package spray system and battery package that has it

Technical Field

The utility model relates to the technical field of batteries, in particular to a spraying system of a battery pack and the battery pack with the spraying system.

Background

When the battery pack is in a short circuit, overcharged or collision state and the like, the explosion-proof valve erupts in the battery single body in the battery pack, and the high-temperature and high-pressure gas formed in the battery pack after the explosion-proof valve erupts easily causes the combustion of the battery pack, so that the battery pack has a large potential safety hazard. In the related art, a spraying device is arranged in the battery pack to spray and cool the battery pack so as to improve the safety of the battery pack after the explosion-proof valve is sprayed, but the spraying device has higher cost.

Disclosure of utility model

The present utility model has been made based on the findings of the inventors of the present utility model regarding the following facts and problems:

In order to make the spraying device better spray into the battery pack with high-pressure environment, a device for storing compressed gas is usually added and stores the compressed gas so that the spraying device sprays the battery pack in a pressurizing way, which makes the manufacturing cost of the spraying device higher.

The present utility model aims to solve at least one of the technical problems existing in the prior art. The utility model is based on the object of providing a spray system for battery packs, which can achieve a good pressurized spray and is low in cost.

The utility model further provides a battery pack with the spraying system.

The spray system according to the first aspect of the utility model comprises: the spray pipe is arranged in the battery pack, and a water spray opening can be formed after the spray pipe is heated; the liquid storage device comprises a liquid storage piece and a first pipe, wherein a liquid storage cavity is formed in the liquid storage piece, and the liquid storage piece is communicated with the spray pipe through the first pipe; a pressurizing mechanism having a volume-adjustable pressurizing chamber in communication with the reservoir chamber, the pressurizing mechanism configured to: when the volume of the pressurizing cavity is reduced, the liquid in the liquid storage cavity is pressed into the spray pipe through the air pressure in the pressurizing cavity.

According to the battery pack spraying system, the pressurizing mechanism is provided with the pressurizing cavity which is communicated with the liquid storage cavity and has the adjustable volume, the pressurizing cavity is reduced in volume so as to realize pressurizing spraying on the battery pack, the structure is simple, and the spraying system is low in cost.

In some embodiments of the utility model, the pressurizing mechanism includes: the first piston is arranged in the first cylinder and divides the space in the first cylinder into a first cavity and the pressurizing cavity.

In one embodiment of the utility model, the spray system further comprises: the first tracheal, tracheal one end is connected supercharging mechanism, tracheal other end with the inner space intercommunication of battery package, first piston is configured to: is pushed by the gas ejected from the battery cell entering the pressurizing mechanism through the first gas pipe so as to compress the pressurizing cavity.

In some examples of the utility model, the spray system further comprises: and the filter piece is arranged in the battery pack and covers the inlet of the other end of the first air pipe.

In some examples of the utility model, the pressurizing mechanism further includes: the second piston is arranged in the second cylinder and divides the space in the second cylinder into a second cavity and a third cavity, the second cavity is communicated with one end of the first air pipe, the third cavity is communicated with the first cavity, and the connecting rod is fixedly connected between the first piston and the second piston.

In one example of the utility model, the diameter of the second piston is greater than the diameter of the first piston.

In some embodiments of the utility model, the spray system further comprises: the second air pipe, one end of the second air pipe with the pressurizing mechanism links to each other and with the pressure boost chamber intercommunication, the other end of the second air pipe extends to the top of stock solution spare and with the upper portion space intercommunication in stock solution chamber.

In some embodiments of the utility model, a one-way valve is connected in series with the first tube, the one-way valve configured to allow one-way flow of fluid within the reservoir toward the shower tube.

In some embodiments of the present utility model, the number of the spraying pipes is a plurality, the spraying pipes extend along a first direction and are arranged at intervals in a second direction, and each spraying pipe may be formed with a plurality of spraying ports, and the plurality of spraying ports are arranged at intervals along the first direction.

The battery pack according to the second aspect of the present utility model includes: the box body is internally provided with a plurality of battery monomers; according to the spraying system of the embodiment of the first aspect of the utility model, the spraying pipe is arranged in the box body, and the liquid storage piece and the pressurizing mechanism are both arranged on the outer side of the box body.

According to the battery pack disclosed by the utility model, by arranging the spraying system of the battery pack in the first aspect, the spraying system is provided with the pressurizing mechanism, the pressurizing mechanism is provided with the pressurizing cavity with the adjustable volume communicated with the liquid storage cavity, the pressurizing spraying of the battery pack is realized by reducing the volume of the pressurizing cavity, the structure is simple, and the cost of the spraying system is low.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic view of a battery pack according to an embodiment of the present utility model;

fig. 2 is a schematic view of a battery pack according to another embodiment of the present utility model.

Reference numerals:

10. A pressurizing mechanism;

11. A first cylinder; 111. a pressurizing chamber; 112. a first chamber; 12. a second cylinder; 121. a second chamber; 122. a third chamber; 13. a first piston; 14. a second piston; 15. a connecting rod;

20. A first air tube; 30. a second air pipe; 40. a liquid storage member; 41. a liquid storage cavity; 50. a first tube; 60. a water pipe; 61. a first pipe section; 62. a second pipe section; 70. a shower pipe; 80. a filter; 90. a one-way valve;

100. A spraying system; 200. a case; 210. a pressure release valve; 300. a battery cell; 310. an explosion-proof valve;

1000. and a battery pack.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

First, a battery pack 1000 according to a second aspect of the present utility model will be briefly described with reference to fig. 1, the battery pack 1000 including a case 200 accommodating a plurality of battery cells 300 therein, and a spray system 100 for spraying a liquid into the case 200 to cool the battery cells.

A spray system 100 of a battery pack 1000 according to an embodiment of the first aspect of the present utility model is described below with reference to fig. 1.

As shown in fig. 1, a shower system 100 of a battery pack 1000 according to an embodiment of the first aspect of the present utility model includes: the shower pipe 70, the liquid storage member 40, the first pipe 50, and the pressurizing mechanism 10.

Specifically, the spray pipe 70 is arranged in the battery pack 1000, and the spray pipe 70 can form a water spray port after being heated; the liquid storage part 40 is internally provided with a liquid storage cavity 41, and the liquid storage part 40 is communicated with the spray pipe 70 through a first pipe 50; the pressurizing mechanism 10 has a pressurizing chamber 111 with an adjustable volume, the pressurizing chamber 111 communicates with the liquid storage chamber 41, and the pressurizing mechanism 10 is configured to: when the volume of the pressurizing chamber 111 decreases, the liquid in the liquid storage chamber 41 is pressed into the shower pipe 70 by the air pressure in the pressurizing chamber 111.

In this embodiment, the spraying pipe 70 may be made of a material that is melted by heat, for example, the spraying pipe 70 may be a plastic piece, etc., and the spraying pipe 70 forms a water spray after being heated, which means that after the explosion-proof valve 310 sprays on the battery cell 300 in the battery pack 1000, the spraying pipe 70 forms a water spray under the effect of the high-temperature gas generated in the battery pack 1000. The spray pipe 70 may spray fire water, cooling liquid, or the like from the water jet.

When the spraying system 100 sprays into the battery pack 1000, the liquid in the liquid storage cavity 41 enters the spraying pipe 70 along the first pipe 50, and the liquid sprays from the water spraying port of the spraying pipe 70 to cool the battery pack 1000. It will be appreciated that the air pressure in the battery pack 1000 is relatively high, and the liquid flows along the first pipe 50 to the spray pipe 70 and is relatively hindered when flowing out from the water jet, and the pressurizing mechanism 10 in this embodiment is configured to pressurize the liquid storage cavity 41, so that the liquid can better resist the pressure in the battery pack 1000 under the pushing of relatively high pressure, and the liquid can be easily and reliably sprayed into the battery pack 1000 from the water jet, so that the amount of the liquid sprayed out from the water jet is increased, and the spraying effect of the spraying system 100 is better.

In this embodiment, the pressurizing mechanism 10 is provided with a pressurizing cavity 111 with an adjustable volume, the pressurizing cavity 111 is communicated with the liquid storage cavity 41, and when the battery pack 1000 operates normally, the air pressure in the pressurizing cavity 111 can keep a normal pressure state with the air pressure in the liquid storage cavity 41, the first cavity 112 and the spray pipe 70, so that the spray system 100 has better stability; when the explosion-proof valve 310 bursts out of the battery cell 300 in the battery pack 1000, the volume of the pressurizing cavity 111 is reduced, so that the air pressure in the pressurizing cavity 111 is increased, and the liquid in the liquid storage cavity 41 can reliably and stably flow into the spray pipe 70 along the first pipe 50 and overcome the pressure in the battery pack 1000 to be sprayed out from the water spraying port under the pushing action of the air with higher pressure in the pressurizing cavity 111, thereby realizing pressurized spraying, and enabling the spraying effect of the spraying system 100 to be better.

In this embodiment, the pressurizing mechanism 10 is provided with the pressurizing cavity 111 communicated with the liquid storage cavity 41, the pressurizing spraying of the battery pack 1000 is realized by reducing the volume of the pressurizing cavity 111, the structure is simple, the spraying system 100 does not need to be provided with a gas storage device to store compressed gas for pressurizing, and the cost of the spraying system 100 is low.

According to the spraying system 100 of the battery pack 1000, through the arrangement of the pressurizing mechanism 10, the pressurizing mechanism 10 is provided with the pressurizing cavity 111 with adjustable volume communicated with the liquid storage cavity 41, and the pressurizing spraying of the battery pack 1000 is realized through the reduction of the volume of the pressurizing cavity 111, so that the structure is simple, and the cost of the spraying system 100 is low.

In some embodiments of the present utility model, as shown in FIG. 1, a booster mechanism 10 includes: a first cylinder 11 and a first piston 13, the first piston 13 being provided in the first cylinder 11 and dividing the space in the first cylinder 11 into a first chamber 112 and a pressurizing chamber 111.

In this embodiment, the first cylinder 11 and the first piston 13 are disposed in the pressurizing mechanism 10, and the first piston 13 may be moved in the first cylinder 11 to change the volume of the pressurizing chamber 111, specifically, when the first piston 13 moves toward the pressurizing chamber 111, the volume of the pressurizing chamber 111 may be reduced, and thus the air pressure in the pressurizing chamber 111 may be increased, so that the pressure of the air in the pressurizing chamber 111 to the liquid in the liquid storage chamber 41 may be increased, and the liquid may reliably flow into the shower pipe 70 and be ejected from the water spraying port under the pressure of the air. The first cylinder 11 and the first piston 13 have simple structure and convenient installation and arrangement, and can better realize pressurized spraying of the spraying system 100, thereby having low cost.

In one embodiment of the present utility model, as shown in FIG. 1, the spray system 100 further comprises: the first gas pipe 20, the pressurizing mechanism 10 is connected to the one end of first gas pipe 20, and the other end of first gas pipe 20 communicates with the inner space of battery package 1000, and first piston 13 is configured to: is pushed by the gas ejected from the battery cell 300 entering the pressurizing mechanism 10 through the first gas pipe 20 to compress the pressurizing chamber 111.

When the explosion-proof valve 310 is sprayed out from the battery cell 300 in the battery pack 1000, high-temperature and high-pressure gas is formed in the battery pack 1000, the high-pressure gas flows along the first gas pipe 20 towards the pressurizing mechanism 10, and the high-pressure gas impacts and pushes one side of the first piston 13 towards the first cavity 112, so that the first piston 13 moves towards the pressurizing cavity 111 under the action of the pressure of the gas pressure, the volume of the pressurizing cavity 111 is reduced, and meanwhile, the spray pipe 70 in the battery pack 1000 is heated and melted to form a water spray port, so that the liquid in the liquid storage cavity 41 is stably sprayed out from the spray port.

In this embodiment, the pressurizing mechanism 10 is communicated with the internal space of the battery pack 1000 through the first gas pipe 20, the gas with higher pressure formed in the battery pack 1000 pushes the first piston 13 to move so as to reduce the volume of the pressurizing cavity 111, and the high-pressure gas generated in the battery pack 1000 is used as power to drive the first piston 13 to move, so that the pressurizing mechanism 10 realizes the pressurizing function, the use and the setting of external power equipment can be reduced, the overall structure of the spraying system 100 is simpler, and the production and manufacturing cost of the spraying system 100 is lower to a certain extent.

In some examples of the utility model, as shown in fig. 1, the spray system 100 further comprises: and a filter member 80, the filter member 80 being disposed in the battery pack 1000 and covering the inlet of the other end of the first gas pipe 20.

It can be appreciated that when the explosion-proof valve 310 in the battery pack 1000 bursts, the generated high-temperature and high-pressure gas carries more impurities such as large particles of chips, and in this embodiment, the filter 80 is disposed at the inlet of the first air pipe 20 connected with the battery pack 1000, so that the impurities in the battery pack 1000 can be effectively filtered, and the blockage of the first air pipe 20 and the pollution of the pipeline are avoided, so that the spraying system 100 can have a good, stable and reliable operation environment and a good pipeline condition, and the spraying system 100 can perform a more reliable, effective and good spraying function on the battery pack 1000. Preferably, the filter 80 is a filter screen.

In some examples of the utility model, as shown in fig. 1, the booster mechanism 10 further includes: the second cylinder 12, the second piston 14 and the connecting rod 15, the second piston 14 is arranged in the second cylinder 12 and divides the space in the second cylinder 12 into a second cavity 121 and a third cavity 122, the second cavity 121 is communicated with one end of the first air pipe 20, the third cavity 122 is communicated with the first cavity 112, and the connecting rod 15 is fixedly connected between the first piston 13 and the second piston 14.

In this embodiment, the second cylinder 12 and the second piston 14 are disposed, the second piston 14 is disposed in the second cylinder 12, and the second piston 14 is connected to the first piston 13 through the connecting rod 15, so that the first piston 13 and the second piston 14 can keep a moving relationship of synchronous movement, the second cavity 121 is communicated with the first gas pipe 20, when the explosion-proof valve 310 bursts out of the battery cell 300 in the battery pack 1000, high-temperature and high-pressure gas in the battery pack 1000 flows along the first gas pipe 20 towards the second cylinder 12, and then the second piston 14 moves towards the third cavity 122 under the pushing of the gas, so that the second piston 14 drives the first piston 13 to move towards the pressurizing cavity 111 to reduce the volume of the pressurizing cavity 111.

It will be appreciated that a certain flow loss exists in the flowing process of the gas, the pressure of the high-pressure gas formed in the battery pack 1000 is reduced in the flowing process along the first gas pipe 20 in the flowing process of the gas, and in this embodiment, by arranging the second cylinder 12 and the second piston 14 and connecting the second piston 14 with the first piston 13 through the connecting rod 15, the length required by connecting the first gas pipe 20 with the battery pack 1000 and the first cylinder 11 can be shortened to a certain extent, so that the first piston 13 can be driven to compress the pressurizing cavity 111 under the pushing action of the larger gas at the second piston 14, the pressurizing cavity 111 can have larger volume change, and the pressurizing effect of the pressurizing mechanism 10 on the spraying system 100 is improved, so that the spraying system 100 can perform better spraying.

In this embodiment, the second cylinder 12 and the second piston 14 are disposed in the pressurizing mechanism 10, so that the pressurizing mechanism 10, the first air tube 20, the liquid storage member 40 and the first tube 50 can be conveniently and easily installed.

In one embodiment of the present utility model, the first cylinder 11 and the second cylinder 12 may be integrally formed. This makes the overall structure of the first cylinder 11 and the second cylinder 12 more compact, and makes the arrangement of the supercharging mechanism 10 more convenient and easier.

In one example of the utility model, as shown in fig. 1, the diameter of the second piston 14 is greater than the diameter of the first piston 13.

It will be understood that, in this embodiment, when the explosion-proof valve 310 bursts out of the battery cell 300 in the battery pack 1000, the high-temperature and high-pressure gas in the battery pack 1000 flows along the first air pipe 20 and the shower pipe 70 to the shower system 100, so that the air pressure in the first air pipe 20 and the first pipe 50 and the air pressure in the liquid storage cavity 41 are changed, and further, the air pressure in the second cavity 121 and the pressure boosting cavity 111 is changed, and the air pressure in the pressure boosting cavity 111 is substantially the same as the air pressure in the battery pack 1000 because the second cavity 121 is communicated with the inner space of the battery pack 1000 through the first air pipe 20, and the air pressure boosting cavity 111 is communicated with the inner space of the battery pack 1000 through the first liquid storage cavity 41 and the shower pipe 70.

In this embodiment, the diameter of the second piston 14 is set to be larger than the diameter of the first piston 13, so that the surface area of one side of the second piston 14 facing the second cavity 121 is larger than the surface area of the first piston 13 facing the pressurizing cavity 111, and the gas pressure of the second piston 14 in the second cavity 121 is larger than the gas pressure of the first piston 13 in the pressurizing cavity 111, so that the second piston 14 can reliably and stably drive the first piston 13 to move towards the pressurizing cavity 111 under the action of the pressure of the gas in the battery pack 1000, the volume of the pressurizing cavity 111 is reduced to form larger pressure on the liquid in the liquid storage cavity 41, and the liquid can better overcome the pressure action of the gas in the battery pack 1000 to spray from a water spraying port to spray, thereby improving the spraying effect of the spraying system 100.

In some embodiments of the present utility model, as shown in fig. 1, the spray system 100 further comprises: and a second air pipe 30, one end of the second air pipe 30 is connected with the pressurizing mechanism 10 and is communicated with the pressurizing cavity 111, and the other end of the second air pipe 30 extends to the top of the liquid storage member 40 and is communicated with the upper space of the liquid storage cavity 41.

The second air pipe 30 is arranged to communicate the pressurizing cavity 111 with the liquid storage cavity 41, so that the structure is simple, the installation and arrangement of the first air cylinder 11 and the liquid storage piece 40 are facilitated, the second air pipe 30 is communicated with the upper space of the liquid storage cavity 41, and after the volume of the pressurizing cavity 111 is reduced, air can stably enter the liquid storage cavity 41 along the second air pipe 30 to push liquid to flow towards the battery pack 1000.

In some embodiments of the present utility model, as shown in fig. 1, a one-way valve 90 is connected in series with the first tube 50, the one-way valve 90 being configured to allow one-way flow of fluid within the reservoir 41 toward the spray tube 70.

When the explosion-proof valve 310 bursts out from the battery cell 300 in the battery pack 1000, the check valve 90 temporarily blocks the flow of the high-pressure gas in the battery pack 1000 in the first pipe 50, so that the pressure boosting cavity 111 and the second cavity 121 have larger air pressure difference, the second piston 14 can be pushed to move more easily by the high-pressure gas, the volume of the pressure boosting cavity 111 can be reduced more quickly by the first piston 13, and the liquid in the liquid storage cavity 41 can flow out from the water spraying port of the spray pipe 70 better.

In some embodiments of the present utility model, as shown in fig. 1, the number of the spray pipes 70 is plural, the plurality of spray pipes 70 extend in a first direction (up-down direction as shown in fig. 1) and are arranged at intervals in a second direction (left-right direction as shown in fig. 1), and a plurality of spray nozzles may be formed on each spray pipe 70 and arranged at intervals in the first direction.

In this embodiment, a plurality of spray pipes 70 are provided, and the plurality of spray pipes 70 extend along the first direction and are arranged at intervals in the second direction, so that a plurality of battery cells 300 in the battery pack 1000 can be comprehensively covered, and the formed plurality of water spray ports can reliably perform good spray cooling operation on the battery cells 300 at any position in the battery pack 1000, so that the spray effect of the spray system 100 on the battery pack 1000 is better.

In one embodiment of the utility model, as shown in fig. 1, the spray system 100 may further include a water pipe 60, the water pipe 60 including a first pipe section 61 and a second pipe section 62, the first pipe section 61 extending in a first direction and being located between the battery cell 300 and the sidewall of the case 200 of the battery pack 1000, the first pipe section 61 being connected to and communicating with the first pipe 50, the second pipe section 62 extending in a second direction, the second pipe section 62 being provided in two, the two second pipe sections 62 being connected to and communicating with both ends of the first pipe section 61, respectively, and both ends of the spray pipe 70 being connected to and communicating with the first pipe section 61 and the second pipe section 62, respectively.

When the spraying system 100 sprays into the battery pack 1000, the liquid in the liquid storage cavity 41 flows into the water pipe 60 along the first pipe 50, then flows into the spraying pipe 70 along the first pipe section 61 and the second pipe section 62, and finally the liquid is sprayed into the battery pack 1000 from a plurality of water spraying ports on the spraying pipe 70, so that the battery pack 1000 is sprayed. The water delivery pipe 60 is arranged in the embodiment, so that liquid can conveniently flow into the plurality of spray pipes 70, the structure is simple, and the water delivery is reliable.

A battery pack 1000 according to an embodiment of the second aspect of the present utility model is described below with reference to fig. 1.

As shown in fig. 1, a battery pack 1000 according to an embodiment of the present utility model includes a case 200 and a spray system 100 according to an embodiment of the first aspect of the present utility model, in which a plurality of battery cells 300 are disposed in the case 200; the shower pipe 70 is disposed in the case 200, and the liquid storage member 40 and the pressurizing mechanism 10 are disposed outside the case 200.

In this embodiment, the pressurizing mechanism 10 and the liquid storage member 40 are all disposed on the outer side of the case 200, the pressurizing mechanism 10 and the liquid storage member 40 do not occupy the space in the case 200 of the battery pack 1000, so that the battery pack 1000 has a better energy density, and the liquid storage member 40 can store enough liquid according to the requirement of spraying and cooling, so that the spraying system 100 can reliably and effectively perform spraying operation on the battery pack 1000, and the spraying effect of the spraying system 100 on the battery pack 1000 is better.

According to the battery pack 1000 of the embodiment of the present utility model, by providing the spraying system 100 of the battery pack 1000 of the embodiment of the first aspect, the spraying system 100 is provided with the pressurizing mechanism 10, the pressurizing mechanism 10 is provided with the pressurizing cavity 111 with adjustable volume communicated with the liquid storage cavity 41, and the pressurizing spraying of the battery pack 1000 is realized by reducing the volume of the pressurizing cavity 111, so that the structure is simple, and the cost of the spraying system 100 is low.

In one embodiment of the present utility model, as shown in fig. 1, a pressure relief valve 210 may be provided on the case 200. Therefore, when the pressure in the battery pack 1000 reaches a certain level, the pressure relief valve 210 is opened to relieve the pressure, so that the risk of explosion caused by overlarge pressure in the battery pack 1000 is avoided, and the safety of the battery pack 1000 is higher.

A battery pack 1000 according to an embodiment of the present utility model will be described below with reference to fig. 1.

As shown in fig. 1, the battery pack 1000 includes a case 200, a plurality of battery cells 300, and a shower system 100, the case 200 being provided with a receiving cavity in which the plurality of battery cells 300 are arranged. Two pressure relief valves 210 are provided on the case 200 for releasing gas in the battery pack 1000.

The spray system 100 includes a water conduit 60, a spray pipe 70, a first pipe 50, a liquid storage 40, a filter 80, a first air pipe 20, a pressurizing mechanism 10, and a second air pipe 30. The water pipe 60 is arranged in the accommodating cavity, the water pipe 60 comprises a first pipe section 61 and a second pipe section 62, the first pipe section 61 extends along a first direction and is positioned between the battery unit 300 and the side wall of the box body 200 of the battery pack 1000, the first pipe section 61 is connected with and communicated with the first pipe 50, the second pipe section 62 extends along a second direction, two second pipe sections 62 are arranged, two second pipe sections 62 are respectively connected with and communicated with two ends of the first pipe section 61, and two ends of the spray pipe 70 are respectively connected with and communicated with the first pipe section 61 and the second pipe section 62.

The spray pipes 70 are provided in plurality, the spray pipes 70 extend in the first direction and are arranged in the accommodating chamber at intervals in the second direction, and the spray pipes 70 are disposed on one side of the battery cell 300 having the explosion-proof valve 310 and are disposed opposite to the explosion-proof valve 310. One end of the first pipe 50 is connected to the first pipe section 61, and the other end of the first pipe 50 is communicated with the bottom of the liquid storage member 40; one end of the first air pipe 20 is connected with the box body 200 of the battery pack 1000 and is communicated with the accommodating cavity, the other end of the first air pipe 20 is connected with the pressurizing mechanism 10, the filter element 80 is a filter screen, and the filter element 80 is arranged at the inlet of the first air pipe 20 communicated with the accommodating cavity.

The supercharging mechanism 10 comprises a first cylinder 11, a second cylinder 12, a first piston 13, a second piston 14 and a connecting rod 15, wherein the first cylinder 11 and the second cylinder 12 are integrally formed, the first piston 13 is movably arranged in the first cylinder 11 and divides the first cylinder 11 into a supercharging cavity 111 and a first cavity 112, the second piston 14 is movably arranged in the second cylinder 12 and divides the second cylinder 12 into a second cavity 121 and a third cavity 122, the first cavity 112 is communicated with the third cavity 122, the first piston 13 and the second piston 14 are connected through the connecting rod 15, and the connecting rod 15 is arranged in the second cavity 121 and the third cavity 122; the second cavity 121 is communicated with the first air pipe 20, the pressurizing cavity 111 is communicated with the liquid storage cavity 41 of the liquid storage piece 40 through the second air pipe 30, the second air pipe 30 is connected to the top of the liquid storage piece 40 and is communicated with the top space of the liquid storage cavity 41, and the liquid storage piece 40 is a liquid storage tank.

When the explosion-proof valve 310 of the battery unit 300 is sprayed, the sprayed high-temperature and high-pressure gas melts part of the spray pipe 70 to form a plurality of water spray ports, liquid in the pipeline is sprayed into the accommodating cavity from the water spray ports to spray the inner space of the battery pack 1000, high-pressure gas in the battery pack 1000 flows into the second cavity 121 along the first air pipe 20 through the filter element 80 and pushes the second piston 14 to move, so that the second piston 14 drives the first piston 13 to move towards the pressurizing cavity 111 to compress the volume of the pressurizing cavity 111, the air pressure in the pressurizing cavity 111 is increased, and then the gas in the pressurizing cavity 111 flows towards the liquid storage cavity 41 and forms a larger pushing effect on the liquid in the liquid storage cavity 41, so that the liquid can be sprayed out from the water spray ports better, and the battery pack 1000 is sprayed.

According to the spraying system 100 of the battery pack 1000, through the arrangement of the pressurizing mechanism 10, the pressurizing mechanism 10 is provided with the pressurizing cavity 111 with adjustable volume communicated with the liquid storage cavity 41, and the pressurizing spraying of the battery pack 1000 is realized through the reduction of the volume of the pressurizing cavity 111, so that the structure is simple, and the cost of the spraying system 100 is low.

In another embodiment of the present utility model, as shown in fig. 2, the first pipe 50 may be provided with a check valve 90, and the check valve 90 is turned on unidirectionally toward the first pipe section 61, so that the liquid in the liquid storage chamber 41 can flow out of the water spraying port of the spraying pipe 70 well to some extent.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery pack spray system, comprising:

The spray pipe is arranged in the battery pack, and a water spray opening can be formed after the spray pipe is heated;

The liquid storage device comprises a liquid storage piece and a first pipe, wherein a liquid storage cavity is formed in the liquid storage piece, and the liquid storage piece is communicated with the spray pipe through the first pipe;

A pressurizing mechanism having a volume-adjustable pressurizing chamber in communication with the reservoir chamber, the pressurizing mechanism configured to: when the volume of the pressurizing cavity is reduced, the liquid in the liquid storage cavity is pressed into the spray pipe through the air pressure in the pressurizing cavity.

2. The battery pack spray system of claim 1, wherein the pressurizing mechanism comprises: the first piston is arranged in the first cylinder and divides the space in the first cylinder into a first cavity and the pressurizing cavity.

3. The battery pack spray system of claim 2, further comprising: the first tracheal, tracheal one end is connected supercharging mechanism, tracheal other end with the inner space intercommunication of battery package, first piston is configured to: is pushed by the gas ejected from the battery cell entering the pressurizing mechanism through the first gas pipe so as to compress the pressurizing cavity.

4. The battery pack spray system of claim 3, further comprising: and the filter piece is arranged in the battery pack and covers the inlet of the other end of the first air pipe.

5. The battery pack spray system of claim 3, wherein the boost mechanism further comprises: the second piston is arranged in the second cylinder and divides the space in the second cylinder into a second cavity and a third cavity, the second cavity is communicated with one end of the first air pipe, the third cavity is communicated with the first cavity, and the connecting rod is fixedly connected between the first piston and the second piston.

6. The battery pack spray system of claim 5, wherein the second piston has a diameter greater than a diameter of the first piston.

7. The battery pack spray system of claim 1, further comprising: the second air pipe, one end of the second air pipe with the pressurizing mechanism links to each other and with the pressure boost chamber intercommunication, the other end of the second air pipe extends to the top of stock solution spare and with the upper portion space intercommunication in stock solution chamber.

8. The battery pack spray system of any one of claims 1 to 7, wherein a one-way valve is connected in series with the first tube, the one-way valve configured to allow one-way flow of fluid within the reservoir toward the spray tube.

9. The spray system of any one of claims 1 to 7, wherein the number of the spray pipes is plural, the plurality of spray pipes extend in a first direction and are arranged at intervals in a second direction, and a plurality of water spray ports are formed in each of the spray pipes and are arranged at intervals in the first direction.

10. A battery pack, comprising:

The box body is internally provided with a plurality of battery monomers;

The spray system of any one of claims 1-9, wherein the spray tube is disposed within the housing, and the reservoir and the pressurizing mechanism are both disposed outside of the housing.