technical field
[One]
The present invention relates to a battery rack and a power storage device including the same.
[2]
This application is a priority claim application for Korean Patent Application No. 10-2019-0142927 filed on November 08, 2019, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.
background
[3]
Secondary batteries that are easy to apply according to product groups and have electrical characteristics such as high energy density are not only portable devices, but also electric vehicles (EVs) or hybrid vehicles (HEVs) driven by an electric drive source. It is universally applied. These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that not only the primary advantage of being able to dramatically reduce the use of fossil fuels but also the fact that no by-products are generated from the use of energy.
[4]
The types of secondary batteries currently widely used include a lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel hydrogen battery, a nickel zinc battery, and the like. The unit secondary battery cell, that is, the operating voltage of the unit battery cell is about 2.5V ~ 4.5V. Accordingly, when a higher output voltage is required, a plurality of battery cells are connected in series to form a battery pack. In addition, a plurality of battery cells may be connected in parallel to form a battery pack according to the charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack may be variously set according to a required output voltage or charge/discharge capacity.
[5]
On the other hand, when configuring a battery pack by connecting a plurality of battery cells in series/parallel, a battery module including at least one battery cell is first configured, and other components are added using the at least one battery module. It is common to configure battery packs or battery racks. Here, the battery rack including at least one battery module also constitutes a power storage device including at least one such battery rack according to various voltage and capacity requirements.
[6]
In the case of a conventional battery rack, when an abnormal heat symptom occurs in the battery cell of at least one of the battery modules and the temperature continues to rise, thermal runaway occurs when it exceeds a certain temperature and propagates to the surrounding battery module. There is a problem that can cause major safety problems.
[7]
Therefore, a search for a method for providing a battery rack capable of rapidly preventing the propagation to the peripheral battery module side due to thermal runaway and a power storage device including such a battery rack is required.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[8]
Accordingly, an object of the present invention is to provide a battery rack capable of quickly preventing the propagation to the peripheral battery module due to thermal runaway, and a power storage device including the battery rack.
[9]
And, another object of the present invention is to provide a battery rack capable of securing overall rigidity and protecting nozzles from external shocks and the like through a double bracket structure and a power storage device including such a battery rack.
means of solving the problem
[10]
In order to solve the above object, the present invention, as a battery rack, a plurality of battery modules comprising at least one battery cell; a rack case accommodating the plurality of battery modules; a fire extinguishing water supply unit disposed at the rear of the rack case and connected to the plurality of battery modules; and a bracket unit that covers the fire extinguishing water supply unit and is disposed at the rear of the rack case.
[11]
The fire extinguishing water supply unit may include: a fire extinguishing water pipe disposed along a height direction of the rack case; and a plurality of fire extinguishing water nozzles connected to the fire extinguishing water pipe and mounted through the plurality of battery modules.
[12]
The bracket unit may include: a first bracket covering the fire extinguishing water pipe; and a second bracket fixed to the first bracket and supporting the plurality of fire extinguishing water nozzles.
[13]
A plurality of venting holes disposed opposite to the plurality of fire extinguishing water nozzles may be provided in the first bracket.
[14]
Each of the plurality of fire extinguishing water nozzles may include a nozzle body mounted through the second bracket; and a nozzle head connected to the nozzle body and penetrating through the plurality of battery modules.
[15]
Each of the plurality of fire extinguishing water nozzles may include a sealing member provided outside the nozzle body.
[16]
The sealing member may be disposed in close contact with the second bracket.
[17]
The plurality of venting holes may be disposed in a direction opposite to the fire extinguishing water nozzle.
[18]
The plurality of venting holes may be disposed to be spaced apart from each other by a predetermined distance along a height direction of the first bracket.
[19]
And, the present invention, as a power storage device, at least one battery rack according to the above-described embodiments; provides a power storage device comprising a.
Effects of the Invention
[20]
According to various embodiments as described above, it is possible to provide a battery rack capable of quickly preventing the propagation to the peripheral battery module due to thermal runaway, and a power storage device including such a battery rack.
[21]
And, according to various embodiments as described above, to provide a battery rack capable of securing overall rigidity and protecting the fire extinguishing water nozzle from external shocks, etc. through the double bracket structure and a power storage device including such a battery rack. can
Brief description of the drawing
[22]
1 is a view for explaining a battery rack according to an embodiment of the present invention.
[23]
Figure 2 is a front view of the battery rack of Figure 1;
[24]
Figure 3 is a rear view of the battery rack of Figure 1;
[25]
Figure 4 is a side view of the battery rack of Figure 1;
[26]
5 is a view for explaining the fire extinguishing water supply unit of the battery rack of FIG.
[27]
FIG. 6 is a view for explaining a fire extinguishing water nozzle of the fire extinguishing water supply unit of FIG. 5 .
[28]
7 and 8 are views for explaining the bracket unit of the battery rack of FIG.
[29]
9 and 10 are views for explaining the fire extinguishing water supply unit mounted on the bracket unit of the battery rack of FIG.
[30]
11 is a view for explaining a mounting structure with the battery module of the fire extinguishing water supply unit mounted on the bracket unit of the battery rack of FIG.
[31]
12 is a diagram for explaining a power storage device according to an embodiment of the present invention.
Modes for carrying out the invention
[32]
The present invention will become more apparent by describing preferred embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the embodiments described herein are illustratively shown to aid understanding of the invention, and the present invention may be implemented with various modifications different from the embodiments described herein. In addition, in order to help understanding of the invention, the accompanying drawings are not drawn to scale, but dimensions of some components may be exaggerated.
[33]
Figure 1 is a view for explaining a battery rack according to an embodiment of the present invention, Figure 2 is a front view of the battery rack of Figure 1, Figure 3 is a rear view of the battery rack of Figure 1, Figure 4 is Figure 1 is a side view of the battery rack.
[34]
1 to 4 , the battery rack 10 may include a battery module 100 , a rack case 200 , a fire extinguishing water supply unit 300 and a bracket unit 400 .
[35]
The battery module 100 may be provided in plurality. The plurality of battery modules 100 may be stacked to each other so as to be electrically connected to each other. For example, the plurality of battery modules 100 may be arranged in two rows along the height direction of the battery rack 200 to be described later.
[36]
Each of the plurality of battery modules 100 may include a battery cell 110 and a module case 130 .
[37]
The battery cell 110 is a secondary battery, and may be provided as a pouch-type secondary battery, a prismatic secondary battery, or a cylindrical secondary battery. Hereinafter, in this embodiment, the battery cell 110 will be described as being provided as a pouch-type secondary battery.
[38]
At least one battery cell 110 may be provided in plurality. Hereinafter, in the present embodiment, the battery cell 110 is limited to a plurality of the description will be provided.
[39]
The module case 130 may accommodate the plurality of battery cells 110 . To this end, an accommodating space for accommodating the plurality of battery cells 110 may be provided in the module case 130 .
[40]
The module case 130 may include a nozzle insertion part 135 (refer to FIG. 11 ). The nozzle insertion part 135 is provided on the rear surface of the module case 130, and the nozzle head 353 of the fire extinguishing water nozzle 350 (refer to FIG. 11 ) of the fire extinguishing water supply unit 300, which will be described later, is referred to in FIG. 11 . ) can be installed.
[41]
The rack case 200 may accommodate the plurality of battery modules 100 . To this end, the rack case 200 may be provided with an accommodating space capable of accommodating the plurality of battery modules 100 .
[42]
The fire extinguishing water supply unit 300 is disposed at the rear of the rack case 200 and may be connected to the plurality of battery modules 100 . The fire extinguishing water supply unit 300 may supply fire extinguishing water into the plurality of battery modules 100 when an abnormal situation such as thermal runaway of the plurality of battery modules 100 occurs.
[43]
To this end, the fire extinguishing water supply unit 300 is mounted through the module case 200 of the plurality of battery modules 100, and the battery cells 110 inside the module case 200 when the abnormal situation occurs. The fire extinguishing water can be directly injected to the side.
[44]
In the case of this embodiment , through the fire extinguishing water supply unit 300 capable of directly injecting the fire extinguishing water to the battery cells 110 inside the module case 200, thermal runaway or fire occurs inside the battery module 100 It is possible to suppress thermal runaway or fire at an early stage more quickly.
[45]
The fire extinguishing water supply unit 300 includes a fire water tank unit 90 (see FIG. 12) through a fire water supply line 70 (refer to FIG. 12) to be described later provided outside the battery rack 10 for supplying the fire water. 12) can be connected.
[46]
Hereinafter, the fire extinguishing water supply unit 300 according to this embodiment will be described in more detail.
[47]
FIG. 5 is a view for explaining a fire extinguishing water supply unit of the battery rack of FIG. 1 , and FIG. 6 is a view for explaining a fire extinguishing water nozzle of the fire extinguishing water supply unit of FIG. 5 .
[48]
5 and 6 , the fire extinguishing water supply unit 300 may include a supply pipe 310 , a fire water pipe 330 , and a fire extinguishing water nozzle 350 .
[49]
The supply pipe 310 may be connected to the fire extinguishing water tank unit 90 (refer to FIG. 12 ) through a fire extinguishing water supply line 70 (refer to FIG. 12 ), which will be described later. The supply pipe 310 may receive the fire extinguishing water from the fire extinguishing water tank unit 90 through the fire extinguishing water supply line 70 .
[50]
The fire extinguishing water pipe 330 is connected to the supply pipe 310 and may be disposed along a height direction of the rack case 200 . For example, the fire extinguishing water supply pipe 300 may be provided in an approximately rectangular frame shape while being arranged in two rows along the height direction of the rack case 200 .
[51]
The fire extinguishing water nozzle 350 is connected to the fire water pipe 330 , and may be mounted through the plurality of battery modules 200 . Accordingly, a plurality of fire extinguishing water nozzles 350 may be provided to correspond to the plurality of battery modules 200 .
[52]
The plurality of fire extinguishing water nozzles 350 may include a nozzle body 351 , a nozzle head 353 , and a sealing member 355 .
[53]
The nozzle body 351 may be mounted through the second bracket 430 of the bracket unit 400 to be described later. The nozzle body 351 may be mounted through a bracket unit 400 to be described later. The nozzle body 351 is connected to the fire extinguishing water pipe 330 and may be at least partially disposed inside the plurality of battery modules 100 . Specifically, the nozzle body 353 may be, at least partially, disposed between the second bracket 430 and the rear surface of the rack case 200 .
[54]
A passive valve or an active valve may be provided in the nozzle body 351 . The passive valve or the active valve maintains the nozzle body 351 internal flow path in a closed state in a general situation, and the abnormal situation occurs in an abnormal situation such as thermal runaway of the battery module 100 battery module 100 It may operate to open the internal flow path so that the fire extinguishing water can be sprayed to the side.
[55]
One end of the nozzle body 351 may be disposed inside the module case 130 of the battery module 100 . Accordingly, when an abnormal situation such as thermal runaway of the battery module 100 occurs, the nozzle body 353 injects the fire extinguishing water into the module case 130, and the abnormal situation occurs in the battery module 100 ) of the battery cells 110 can be cooled more quickly.
[56]
The nozzle head 353 is connected to the nozzle body 351 , and may be mounted through the plurality of battery modules 200 . Specifically, the nozzle head 353 may be mounted on the nozzle insertion part 135 of the module case 130 to penetrate through the module case 130 of the battery module 200 .
[57]
The sealing member 355 may be provided outside the nozzle body 351 . The sealing member 355 may be disposed in close contact with the second bracket 430 of the bracket unit 400 to be described later.
[58]
The sealing member 355 may be disposed to surround the outside of the nozzle body 351 and to be in contact with the second bracket 430 . Through this, the sealing member 355 can more reliably prevent the leakage of fire extinguishing water or the like to the outside of the nozzle body 351 . Specifically, when an abnormal situation occurs in any one of the battery modules 100 among the plurality of battery modules 100, the nozzle body ( 351), fire extinguishing water may be sprayed. When the fire extinguishing water is sprayed, when the fire water leaks out of the nozzle body 351 , it may be necessary to prevent the fire water from flowing into the battery module 100 where an abnormal situation does not occur. In this embodiment, as the sealing member 355 is disposed in close contact with the second bracket 430 of the bracket unit 400 from the outside of the nozzle body 351, the nozzle body ( 351) It is possible to more reliably and firmly prevent fire extinguishing water from leaking to the outside.
[59]
The bracket unit 400 covers the fire extinguishing water supply unit 300 , and may be disposed at the rear of the rack case 200 .
[60]
Hereinafter, the bracket unit 400 will be looked at in more detail through the following related drawings.
[61]
7 and 8 are views for explaining the bracket unit of the battery rack of FIG. 1, and FIGS. 9 and 10 are views for explaining the fire extinguishing water supply unit mounted on the bracket unit of the battery rack of FIG. 1, FIG. 11 is a view for explaining the mounting structure with the battery module of the fire extinguishing water supply unit mounted on the bracket unit of the battery rack of FIG. 1 .
[62]
7 to 11 , the bracket unit 400 may include a first bracket 410 and a second bracket 430 .
[63]
The first bracket 410 may cover the fire extinguishing water pipe 330 of the fire extinguishing water supply unit 300 . The first bracket 410 may be disposed to surround the fire extinguishing water pipe 330 . Through the first bracket 410 , direct shock transmission such as an external shock to the fire extinguishing water pipe 330 is prevented, and an external shock that may be transmitted to the fire extinguishing water pipe 330 is effectively buffered. can do it Accordingly, in the present embodiment, damage to the fire extinguishing water pipe 330 can be effectively prevented through the first bracket 410 .
[64]
A venting hole 415 may be provided in the first bracket 410 .
[65]
The venting hole 415 may be provided in plurality.
[66]
The plurality of venting holes 415 may be provided in a number corresponding to the plurality of fire extinguishing water nozzles 350 . The plurality of venting holes 415 may be spaced apart from each other by a predetermined distance along the height direction of the first bracket 410 , and may be arranged in two rows along the height direction.
[67]
The plurality of venting holes 415 may be disposed to face the plurality of fire extinguishing water nozzles 350 . The plurality of venting holes 415 may be disposed in a direction opposite to the fire extinguishing water nozzle 350 .
[68]
As such, the plurality of venting holes 415 may guide the discharge of gas generated when an abnormal situation such as thermal runaway or fire of the battery modules 100 occurs. Accordingly, in this embodiment, through the plurality of venting holes 414, the high temperature gas that may be generated when the abnormal situation occurs more quickly outside the battery rack 10, specifically, the battery It can be exported to the rear side of the rack (10).
[69]
The second bracket 430 may be fixed to the first bracket 410 and support the plurality of fire extinguishing water nozzles 350 . In the present embodiment, the fire extinguishing water nozzle 350 of the fire extinguishing water supply unit 300 can be more stably supported through the second bracket 430 .
[70]
In addition, the second bracket 430 may form a double bracket structure together with the first bracket 410 to cover the front of the fire extinguishing water pipe 330 , so that the fire extinguishing water pipe 330 is secured. It can be more reliably protected, and the overall rigidity of the bracket unit 400 can also be further increased.
[71]
A nozzle mounting part 435 through which the fire extinguishing water nozzle 350 is mounted may be provided in the second bracket 430 .
[72]
The nozzle mounting part 435 may be provided in plurality to correspond to the number of the fire extinguishing water nozzles 350 . The plurality of nozzle mounting parts 435 may be spaced apart from each other by a predetermined distance along the height direction of the second bracket 430 , and may be arranged in two rows along the height direction.
[73]
As such, the battery rack 10 according to the present embodiment supports the fire water pipe 330 of the fire water supply unit 300 through the bracket unit 400, and the fire water nozzle 350 ) can guide the more stable support and installation of
[74]
In addition, the battery rack 10 according to this embodiment forms a double bracket structure through the bracket unit 400 to maximize the protection and buffering effect from external impacts of the fire extinguishing water supply unit 300 . In addition, the overall rigidity can be further increased.
[75]
12 is a diagram for explaining a power storage device according to an embodiment of the present invention.
[76]
Referring to FIG. 12 , the power storage device 1 may be used as an energy source for home or industrial use. This power storage device (1), the previous implementation Examples may include at least one battery rack 10 and a rack container 50 for accommodating the at least one battery rack 10 .
[77]
The rack container 50 may be provided with a fire fighting tank unit 90 for supplying fire extinguishing water to the plurality of battery racks 10 . The fire water tank unit 90 is filled with the fire water, that is, fire water prepared with water. The fire extinguishing water tank unit 90 may be connected to the plurality of battery racks 10 and the fire extinguishing agent supply line 70 to supply fire extinguishing water to the plurality of battery racks 10 .
[78]
The power storage device 1 according to this embodiment, including the battery rack 10 of the previous embodiment, the power storage device 1 including all the advantages of the battery rack 10 of the previous embodiment can provide
[79]
According to various embodiments as described above, a battery rack 10 that can quickly prevent propagation to the peripheral battery module 100 side due to thermal runaway and a power storage device 1 including such a battery rack 10 can provide
[80]
And, according to various embodiments as described above, a battery rack 10 that can secure overall rigidity and protect a fire extinguishing water nozzle from external impacts, etc. through a double bracket structure and such a battery rack 10 comprising A power storage device 1 may be provided.
[81]
In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.
Claims
[Claim 1]
A battery rack comprising: a plurality of battery modules including at least one battery cell; a rack case accommodating the plurality of battery modules; a fire extinguishing water supply unit disposed at the rear of the rack case and connected to the plurality of battery modules; and a bracket unit that covers the fire extinguishing water supply unit and is disposed at the rear of the rack case.
[Claim 2]
The fire extinguishing water supply unit of claim 1, wherein the fire extinguishing water supply unit comprises: a fire extinguishing water pipe disposed along a height direction of the rack case; and a plurality of fire extinguishing water nozzles connected to the fire extinguishing water pipe and mounted through the plurality of battery modules.
[Claim 3]
3. The method of claim 2, wherein the bracket unit comprises: a first bracket covering the fire extinguishing water pipe; and a second bracket fixed to the first bracket and supporting the plurality of fire extinguishing water nozzles.
[Claim 4]
The battery rack according to claim 3, wherein the first bracket has a plurality of venting holes disposed to face the plurality of fire extinguishing water nozzles.
[Claim 5]
According to claim 2, wherein the plurality of fire extinguishing water nozzles, respectively, the nozzle body mounted through the second bracket; and a nozzle head connected to the nozzle body and penetrating through the plurality of battery modules.
[Claim 6]
The battery rack according to claim 5, wherein each of the plurality of fire extinguishing water nozzles includes a sealing member provided outside the nozzle body.
[Claim 7]
The battery rack according to claim 6, wherein the sealing member is disposed in close contact with the second bracket.
[Claim 8]
The battery rack according to claim 4, wherein the plurality of venting holes are disposed in a direction opposite to the fire extinguishing water nozzle.
[Claim 9]
The battery rack according to claim 4, wherein the plurality of venting holes are spaced apart from each other by a predetermined distance along a height direction of the first bracket.
[Claim 10]
The power storage device comprising a; at least one battery rack according to claim 1 .