Title of invention: battery rack and power storage device including the same
Technical field
[One]
The present invention relates to a battery rack and a power storage device including the same.
[2]
This application is an application for claiming priority for Korean Patent Application No. 10-2019-0020704 filed on February 21, 2019, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.
Background
[3]
Secondary batteries with high ease of application and high energy density according to product group are not only portable devices, but also electric vehicles (EVs) or hybrid vehicles (HEVs) driven by electric drive sources. It is universally applied. Such a secondary battery is attracting attention as a new energy source for environmentally friendly and energy efficiency improvement in that it does not generate by-products from the use of energy as well as the primary advantage that it can dramatically reduce the use of fossil fuels.
[4]
Types of rechargeable batteries currently widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and the like. The operating voltage of such a unit secondary battery cell, that is, a unit battery cell is about 2.5V to 4.5V. Therefore, when a higher output voltage is required, a battery pack may be formed by connecting a plurality of battery cells in series. In addition, a battery pack is formed by connecting a plurality of battery cells in parallel 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 at least one battery module. It is common to construct a battery pack. Here, the battery pack including at least one battery module may constitute a power storage device including battery racks including at least one such battery pack according to various voltage and capacity requirements.
[6]
The conventional power storage device is configured to include a plurality of battery racks and a rack container accommodating the plurality of battery racks. In the rack container, a firefighting facility structure is generally provided in order to cope with the risk of fire occurrence due to overheating that may occur due to the characteristics of the battery cell.
[7]
However, in the conventional power storage device, since the firefighting facility structure is provided separately from the battery racks in the rack container, when a dangerous situation such as a fire of the battery rack occurs, the firefighting facility structure is only after a certain degree of risk spread in the rack container There is a problem that the detection and fire extinguishing work are progressed by operation.
[8]
In addition, in such a conventional power storage device, sprinkler debris or carbon dioxide emission debris remains in the entire area of ​​the rack container when the firefighting facility structure in the rack container is operated. There is.
[9]
Therefore, it is required to find a way to prevent the spread of fire more quickly when such a dangerous situation occurs.
Detailed description of the invention
Technical challenge
[10]
Accordingly, an object of the present invention is to provide a battery rack capable of preventing the spread of fire in units of a battery rack when a fire situation occurs, and a power storage device including the same.
[11]
In addition, another object of the present invention is to provide a battery rack capable of self-extinguishing in a battery rack unit when a fire situation occurs, and a power storage device including the same.
Means of solving the task
[12]
In order to solve the above object, the present invention provides a battery rack, comprising: a plurality of battery modules including at least one battery cell; A rack case accommodating the plurality of battery modules and provided with a plurality of air circulation units; An isolation unit mounted on the rack case and slidable to expose or seal the plurality of air circulation units; And a control unit electrically connected to the isolation unit and controlling a sliding operation of the isolation unit.
[13]
The isolation unit may include a unit body mounted on the rack case and electrically connected to the control unit; And a sliding member that is slidably coupled from the unit body and slides to expose or seal the plurality of air circulation units.
[14]
The control unit may seal the plurality of air circulation units by sliding the sliding member at a predetermined temperature or higher.
[15]
The battery rack may include a temperature sensor provided in the rack case and electrically connected to the control unit.
[16]
The battery rack may include a fire extinguishing device provided in the rack case, electrically connected to the control unit, and having a predetermined fire extinguishing liquid.
[17]
The control unit controls the isolation unit to seal the plurality of air circulation units when the temperature of the battery rack is higher than a preset first temperature, and when the temperature of the battery rack is higher than a preset second temperature, the fire extinguishing device By controlling, it is possible to spray the fire extinguishing liquid into the inside of the rack case.
[18]
The sliding member may be made of a flame retardant material.
[19]
The sliding member may be provided with a firefighting cloth or an air blocking sheet.
[20]
In addition, the present invention, a power storage device, at least one battery rack according to the above-described embodiments; And a rack container for accommodating the at least one battery rack.
[21]
The battery rack is provided in plurality, and the plurality of battery racks may be independently controlled.
Effects of the Invention
[22]
According to various embodiments as described above, a battery rack capable of preventing the spread of fire in units of a battery rack when a fire situation occurs, and a power storage device including the same may be provided.
[23]
In addition, according to various embodiments as described above, when a fire situation occurs, a battery rack capable of self-extinguishing in units of a battery rack and a power storage device including the same may be provided.
Brief description of the drawing
[24]
The following drawings appended to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of ​​the present invention together with the detailed description of the present invention, which will be described later. It is limited only to and should not be interpreted.
[25]
1 is a view for explaining a battery rack according to an embodiment of the present invention.
[26]
2 is a cross-sectional view of the battery rack of FIG. 1.
[27]
3 and 4 are views for explaining the operation of the isolation unit of the battery rack of FIG. 2.
[28]
5 and 6 are diagrams for explaining another embodiment of the isolation unit of the battery rack of FIG. 1.
[29]
7 and 8 are diagrams for explaining a control operation of the battery rack of FIG. 1 at a predetermined temperature or higher.
[30]
9 is a view for explaining a power storage device according to an embodiment of the present invention.
[31]
10 is a diagram for describing a control operation of the power storage device of FIG. 9.
Mode for carrying out the invention
[32]
The present invention will become more apparent by describing in detail a preferred embodiment of the present invention with reference to the accompanying drawings. The embodiments described herein are illustratively shown to aid understanding of the invention, and it should be understood that the present invention can be implemented with various modifications different from the embodiments described herein. In addition, in order to aid understanding of the invention, the accompanying drawings are not drawn to scale, but dimensions of some components may be exaggerated.
[33]
1 is a view for explaining a battery rack according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the battery rack of Figure 1, Figures 3 and 4 explain the operation of the isolation unit of the battery rack of Figure 2 5 and 6 are views for explaining another embodiment of the isolation unit of the battery rack of FIG. 1.
[34]
1 to 6, the battery rack 10 includes a battery module 100, a rack case 200, a control unit 300, a temperature sensor 400, a fire extinguishing device 500, and an isolation unit 600. ) Can be included.
[35]
The battery module 100 may include at least one or more battery cells. The battery cell is a secondary battery, and may be at least one of a pouch-type secondary battery, a cylindrical secondary battery, and a prismatic secondary battery. Hereinafter, in the present embodiment, the battery cell is limited to the pouch-type secondary battery.
[36]
The battery module 100 may be provided in a plurality of one or more. Hereinafter, in the present embodiment, a plurality of battery modules 100 will be described, each including a plurality of battery cells.
[37]
The rack case 200 may accommodate the plurality of battery modules 100. To this end, an accommodation space capable of accommodating the plurality of battery modules 100 may be provided in the rack case 200.
[38]
At least one air circulation unit 250 for cooling the plurality of battery modules 100 may be provided in the rack case 200. Hereinafter, in the present embodiment, a description will be made limited to that the air circulation unit 250 is provided in plural.
[39]
The plurality of air circulation units 250 are formed in at least one of the front, both sides, and rear of the rack case 200 so that the plurality of battery modules 100 can be exposed to the outside of the rack case 200 Can be.
[40]
The control unit 300 is provided inside the rack case 200 and may perform a control function for overall operation and management of the battery rack 10. The control unit 300 may be electrically connected to the plurality of battery modules 100, a temperature sensor 400 to be described later, a fire extinguishing device 500, and an isolation unit 600.
[41]
The control unit 300 may control a sliding operation of the isolation unit 600 to be described later. Specifically, the control unit 300 slides the sliding member 630 of the isolation unit 600, which will be described later, at a predetermined temperature or higher, so that the plurality of air circulation units 250 are moved to the battery rack 10. It can be sealed from the outside.
[42]
More specifically, the control unit 300 controls the sliding operation of the isolation unit 600 when the temperature of the battery rack 10 detected by the temperature sensor 400 to be described later is higher than the preset predetermined temperature. can do. More specifically, the control unit 300 seals the plurality of air circulation units 250 by controlling the isolation unit 600 when the temperature of the battery rack 10 is higher than a preset first temperature, When the temperature of the battery rack 10 is higher than a preset second temperature, the fire extinguishing device 500 to be described later may be controlled to inject a fire extinguishing liquid into the rack case 200. Here, the preset second temperature may be a higher temperature than the preset first temperature.
[43]
The temperature sensor 400 is provided in the rack case 200 and may sense the temperature of the battery rack 10. A plurality of the temperature sensors 400 may be provided in the rack case 200 and may be electrically connected to the control unit 300.
[44]
The fire extinguishing device 500 is provided in the rack case 200 and may be electrically connected to the control unit 300. The fire extinguishing device 500 may be provided in plural, and may have a predetermined fire extinguishing liquid.
[45]
The isolation unit 600 may slide the plurality of air circulation units 250 outside the battery rack 10 or seal it from the outside of the battery rack 10 so that the rack case ( 200) can be mounted. Meanwhile, as disclosed in FIGS. 5 and 6, the isolation unit 605 exposes the plurality of air circulation units 250 to the outside of the battery rack 10 according to a rotational sliding operation in a horizontal direction, or It may be possible to be provided so as to be sealed from the outside of the battery rack 10.
[46]
The isolation unit 600 may be provided in a plurality of at least one or more. Hereinafter, in the present embodiment, a description will be made limited to that the isolation unit 600 is provided in plural.
[47]
Each of the plurality of isolation units 600 may include a unit body 610 and a sliding member 630.
[48]
The unit main body 610 is mounted on the rack case 200 and may be electrically connected to the control unit 300. The unit body 610 may include various components for sliding operation of the sliding member 630 to be described later.
[49]
The sliding member 630 is slidably coupled from the unit body 610 and may slide to expose or seal the plurality of air circulation units 250.
[50]
The sliding member 630 may be made of a flame retardant material to prevent fire spread and delay fire. For example, the sliding member 630 may be provided as a fire fighting gun or an air blocking sheet.
[51]
Hereinafter, a detailed control operation when a fire situation occurs in the battery rack 10 of the present embodiment will be described in more detail.
[52]
7 and 8 are diagrams for explaining a control operation of the battery rack of FIG. 1 at a predetermined temperature or higher.
[53]
Referring to FIG. 7, a dangerous situation such as a fire situation due to overheating may occur in at least one of the plurality of battery modules 100 in the rack case 200 of the battery rack 10.
[54]
In this case, the control unit 300 may operate the isolation unit 600 when the temperature of the battery rack 10 detected by the temperature sensor 400 is equal to or higher than the preset first temperature. Above the preset first temperature, all of the plurality of air circulation units 250 are sealed through the sliding of the sliding members 630 of the plurality of isolation units 600, so that the battery rack 10 The inside can be blocked from the outside.
[55]
Accordingly, the battery rack 10 according to the present embodiment can more quickly prevent the spread of fire when the dangerous situation occurs.
[56]
Referring to FIG. 8, if a fire is not suppressed inside the battery rack 10 and a fire situation is maintained continuously, the temperature inside the sealed battery rack 10 may further increase.
[57]
In this case, the control unit 300 controls the fire extinguishing device 500 to control the rack case when the temperature of the battery rack 10 detected by the temperature sensor 400 is equal to or higher than the preset second temperature. (200) By injecting the fire extinguishing liquid into the inside, the fire extinguishing operation can be quickly performed in the battery rack 10 itself.
[58]
As such, in the present embodiment, when a fire situation occurs in the battery rack 10, the spread of fire in the battery rack 10 unit can be prevented, and the fire extinguishing operation can be performed by itself in the battery rack 10 unit. have.
[59]
9 is a diagram for describing a power storage device according to an embodiment of the present invention, and FIG. 10 is a diagram for describing a control operation of the power storage device of FIG. 9.
[60]
9 and 10, the power storage device 1 may be used as a household or industrial energy source. The power storage device 1, the at least one, in the case of this embodiment, accommodates a plurality of battery racks 10 and the plurality of battery racks 10, and a rack container having a separate firefighting facility structure ( 5) may be included. Here, the plurality of battery racks 10 may be independently controlled within the rack container 5.
[61]
In this embodiment, when a fire situation occurs in at least one battery rack 10, the isolation unit 600 of the battery rack 10 in which the fire situation occurs is operated, and the battery in which the fire situation occurs primarily. The rack 10 is sealed, and a self-extinguishing operation can be performed inside the secondary sealed battery rack 10.
[62]
Accordingly, in the present embodiment, when a fire situation occurs in at least one battery rack 10 in the rack container 5, the battery rack 10 is faster in units of the battery rack 10 in which the fire situation occurs. ), and self-extinguishing work is in progress, it is possible to minimize the risk that the fire situation may spread more greatly from the battery rack 10 in which the fire situation occurred to the adjacent battery rack 10.
[63]
Therefore, in the present embodiment, when a fire occurs in any one of these battery racks 10, the fire situation can be quickly ended, and even after the fire situation is ended, it may be caused by the operation of the fire fighting facility structure as in the prior art. It is possible to significantly reduce the cost and time consumption in the treatment of sprinkler debris or carbon dioxide emission debris in the entire area of ​​the rack container 5.
[64]
According to various embodiments as described above, the battery rack 10 capable of preventing the spread of fire in units of the battery rack 10 when a fire situation occurs, and the power storage device 1 including the same can be provided. have.
[65]
In addition, according to various embodiments as described above, when a fire situation occurs, the battery rack 10 capable of self-extinguishing in the unit of the battery rack 10 and the power storage device 1 including the same can be provided. I can.
[66]
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 is generally used in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Of course, various modifications may be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or prospect 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 and provided with a plurality of air circulation units; An isolation unit mounted on the rack case and slidable to expose or seal the plurality of air circulation units; And a control unit electrically connected to the isolation unit and controlling a sliding operation of the isolation unit.
[Claim 2]
The apparatus of claim 1, wherein the isolation unit comprises: a unit main body mounted on the rack case and electrically connected to the control unit; And a sliding member that is slidably coupled from the unit body and slides to expose or seal the plurality of air circulation units.
[Claim 3]
The battery rack of claim 2, wherein the control unit seals the plurality of air circulation units by sliding the sliding member at a predetermined temperature or higher.
[Claim 4]
The battery rack according to claim 3, comprising a temperature sensor provided in the rack case and electrically connected to the control unit.
[Claim 5]
The battery rack according to claim 3, further comprising a fire extinguishing device provided in the rack case, electrically connected to the control unit, and having a predetermined fire extinguishing fluid.
[Claim 6]
The method of claim 5, wherein the control unit controls the isolation unit to seal the plurality of air circulation units when the temperature of the battery rack is higher than a preset first temperature, and the temperature of the battery rack is set to a second temperature. In case of abnormality, the fire extinguishing device is controlled to inject a fire extinguishing liquid into the rack case.
[Claim 7]
The battery rack of claim 2, wherein the sliding member is made of a flame retardant material.
[Claim 8]
The battery rack according to claim 2, wherein the sliding member is provided with a fire fighting gun or an air blocking sheet.
[Claim 9]
At least one battery rack according to claim 1; And a rack container accommodating the at least one battery rack.
[Claim 10]
The power storage device of claim 9, wherein the battery rack is provided in plural, and the plurality of battery racks are each independently controlled.