TWM585991U - Case system for battery fire extinguishing through flooding the battery - Google Patents

Abstract

A flooded battery cabinet system includes: at least one aqueous solution storage box having an aqueous solution storage space for containing an aqueous solution; at least one aqueous solution drain box having an aqueous solution discharge space for receiving the aqueous solution; At least one battery box, each of which has a battery space for accommodating at least one battery; a first water distribution pipeline connecting the aqueous solution accommodating box and the at least one battery box, and in each of the battery boxes At least one water outlet is arranged in the body; at least one water outlet control gate is arranged at the water outlet, and the water is discharged when the battery is burned to make the aqueous solution flood the battery in the battery box for fire extinguishing; and A second water distribution pipe is connected to the at least one battery box and the at least one aqueous solution drain box. The second water distribution pipe is connected to a set height of the battery box, and the set height is close to the battery placed in the battery space. The top surface of the battery.

Description

Flooded battery cabinet system

The invention relates to a battery fire extinguishing system, in particular to a flooded battery cabinet system applied to a battery.

Electric vehicles and energy storage equipment all use batteries as the source of energy storage and power. Because the power source of electric vehicles is the battery, no matter what kind of electric vehicle, such as BEV (Pure Electric Vehicle), HEV (Hybrid Vehicle), PHEV (Plug-in Hybrid Vehicle), and REEV (Extended Range Electric Vehicle) , Fuel cell vehicles, solar cell vehicles, etc., all need batteries that can provide large currents for power conversion. At present, high energy density batteries are the mainstream of high current batteries. For example, lithium ion batteries have the characteristics of high energy density, and they are also batteries using organic solutions as electrolytes.

However, the endless explosions of lithium-ion batteries, and post-collision combustion, have also cast a shadow over the safety of lithium-ion-based high-energy-density batteries. The characteristic of a lithium-ion battery misfire is that, even if the external flame has been extinguished, the chemical reaction of the internal battery continues, so secondary combustion often occurs. So far, there is no specific and effective fire extinguishing system that can support the fire extinguishment of high energy density batteries such as lithium ion batteries, and can even prevent its secondary combustion.

Therefore, how to develop a new battery fire extinguishing system so that it can ignite the fire immediately in the initial stage of combustion under the condition that the battery burns for any reason (whether it is due to collision, internal short circuit, thermal runaway, etc.), and even further prevent it The occurrence of secondary combustion has become an important development direction for the development of battery fire suppression systems.

In view of this, the present invention proposes an immersed battery cabinet system, which uses a closed battery space and provides a fire extinguishing system with an aqueous solution as the main body. When a battery combustion condition is detected, the aqueous solution is filled into the battery space. Fire the battery afterwards. In this way, the special technical effect of locking the disaster in the battery space at the first time point of the occurrence of the disaster, thereby reducing disaster losses, and preventing secondary combustion of the battery, can be achieved.

The present invention provides a flooded battery cabinet system, including: at least one aqueous solution storage box having an aqueous solution storage space for containing an aqueous solution; and at least one aqueous solution drain box having an aqueous solution discharge space for accommodating. The aqueous solution; at least one battery box, each of which has a battery space for containing at least one battery; a first water distribution pipe connecting the aqueous solution containing box and the at least one battery box, and The battery box is provided with at least one water outlet; at least one water outlet control gate, and the water outlet is provided with the water outlet control gate to discharge water when the battery is burned so that the aqueous solution floods the battery in the battery box to perform Fire extinguishing; and a second water distribution pipe connecting the at least one battery box and the at least one aqueous solution drain box, the second water distribution pipe is connected to a set height of the battery box, the set height being close to the battery placed on the battery On the top surface of the battery in the battery space, when the aqueous solution floods the battery box, the full aqueous solution can be stored in the aqueous solution drain box through the second water distribution pipe.

The detailed features and advantages of the new model are described in detail in the following embodiments. The content is sufficient for any person skilled in the art to understand and implement the technical content of the new model. According to the content disclosed in this specification, the scope of patent applications and the drawings Anyone skilled in related arts can easily understand the purpose and advantages of this new type.

10‧‧‧ water tank

11‧‧‧Water tank wall

20‧‧‧Control Host

301, 302, 303‧‧‧ battery box

40‧‧‧Pressure device

501-506‧‧‧outlet control gate

511-516‧‧‧ Outlet control gate

61, 62‧‧‧ Solenoid valve

71, 71a, 71b, 72, 72a ‧‧‧ fire detectors

80, 81, 82, 83‧‧‧ water distribution pipeline

91, 92, 93‧‧‧ batteries

100‧‧‧ water distribution pipeline

111, 112, 113‧‧‧ check valve

131‧‧‧On-off valve

200‧‧‧Aqueous solution drain box

201‧‧‧Aqueous solution release space

1A-1C are a system architecture diagram, a cross-sectional view, and a top view of a first specific embodiment of the new type of immersed battery cabinet system.

Figures 2A-2C are system architecture diagrams, cross-sectional views, and bottom views of the second embodiment of the new type of immersed battery cabinet system.

3A-3D are system architecture diagrams, cross-sectional views, top views, and bottom views of a third specific embodiment of the novel immersed battery cabinet system.

4A-4C are system architecture diagrams, cross-sectional views, and bottom views of a fourth specific embodiment of the new type of immersed battery cabinet system.

Figures 5A-5C are a system rear view, a cross-sectional view taken along line A-A, and a cross-sectional view taken along line B-B of a fifth embodiment of the new type of immersed battery cabinet system.

FIG. 6 is another embodiment of the novel immersed battery cabinet system.

The novel system uses a flooding method to allow batteries (such as high-density organic batteries such as lithium-ion batteries) to be actively extinguished by flooding them with an aqueous solution during a fire (fire). Furthermore, since the battery box in which the battery is placed is already filled with water The solution floods the battery. Therefore, the battery in the battery box is cooled down immediately to extinguish the fire and reduce the internal chemical reaction rate of the battery. Moreover, the battery is isolated from the outside by the aqueous solution, so that the battery will not contact the air, thereby blocking it. The supply of oxygen further blocked the possibility of further combustion of the battery. In addition, by using other electrolytes in the aqueous solution, the battery can be discharged to release battery energy and cool down, further preventing the possibility of secondary self-ignition of the battery. Therefore, with the new type of immersed battery cabinet system, it is possible to reduce or damage the battery box to the occurrence of the event without further spreading to other battery boxes.

The novel technology for flooding batteries in a battery box: first, a system for supplying an aqueous solution, that is, a water storage device (that is, an aqueous solution storage space) and a corresponding water distribution pipeline; second, a detection system Test the battery combustion mechanism. As mentioned earlier, a sealed sprinkler or fire sensor can be used. Third, when the battery is burned, an aqueous solution should be provided immediately to allow the burning battery to be submerged in the aqueous solution. The use of sodium-based electrolyte can accelerate the discharge rate of the battery. In the following, several specific embodiments will be enumerated to explain the novel immersed battery cabinet system.

Next, please refer to Figs. 1A-1C. The first specific embodiment of the new type of immersed battery cabinet system includes a water tank (which can be called an aqueous solution storage tank, and an aqueous solution storage space is defined by the water tank wall 11). 10. Control host 20, battery box 301, battery box 302, water distribution pipeline 80, water distribution pipeline 81, water distribution pipeline 82, water outlet control gates 501-506, etc., and pressure device 40. The battery boxes 301 and 302 each have a battery space for accommodating at least one battery. In this embodiment, two batteries can be accommodated. The water distribution pipe 80 connects the water tank 10 (aqueous solution storage space) and the battery boxes 301 and 302, and at least one water outlet is arranged in the battery boxes 301 and 302 (through the water distribution pipes 81 and 82, respectively). The water outlet control gates 501-506 are provided with a water outlet control gate at the water outlet to discharge water when the batteries 91, 93 are burned, so that the aqueous solution floods the batteries 91, 93 in the battery boxes 301, 302 and extinguishes the fire. In this embodiment, each battery box 301, 302 is provided with three water outlets and three water outlet control gates (501-503, 504-506).

In this embodiment, a closed sprinkler is used as the water outlet control gates 501-506. The thermal automatic sprinkler temperature of the closed sprinkler is between 60 ° C and 150 ° C. In other words, as long as the set automatic sprinkler temperature is reached, the closed sprinkler will burst and perform automatic watering, thereby making the water tank The aqueous solution in 10 is injected into the battery box 301 or the battery box 302, so that the batteries 91 and 93 in the battery box 301 or the battery box 303 are flooded with the aqueous solution, thereby achieving the aforementioned fire extinguishing effect.

In the embodiment shown in FIGS. 1A-1C, it is an embodiment in which the water outlet control gates 501-506 are provided on the top of the battery boxes 301, 302. Figure 1A is a system architecture diagram of a flooded battery cabinet system, Figure 1B is a cross-sectional view of the flooded battery cabinet system, and Figure 2C is a bottom view of the flooded battery cabinet system.

Next, please refer to FIGS. 2A-2C. The first embodiment of the new type of immersed battery cabinet system includes: a water tank (aqueous solution storage space) 10, a control host 20, a battery box 301, a battery box 302, Water pipeline 80, water distribution pipeline 81, water distribution pipeline 82, water outlet control gates 501-506, etc., and pressure device 40. Different from the embodiment shown in FIGS. 1A-1C, the embodiment shown in FIGS. 2A-2C is that the water outlet control gates 501-506 are respectively disposed at the bottom of the battery boxes 301 and 302. Also, a closed sprinkler is used as the water outlet control gates 501-506. The rest are the same as those in Figures 1A-1C, and will not be described again.

It can be seen from the embodiment of FIGS. 1A-1C and the embodiment of FIGS. 2A-2C that the water is discharged. The control gates 501-506 may be disposed on the top or bottom or side of the battery boxes 301, 302 (not shown). Correspondingly, the water distribution pipes 81 and 82 are also disposed on the top or bottom or side of the battery boxes 301 and 302, respectively. In other words, since the goal of the new model is to flood the entire battery box with an aqueous solution, water can come from anywhere.

Heat-sensitive automatic sprinkler of the closed type sprinkler head can be applied to the control host 20 without using the control host 20. The control host 20 is used to control the pressurizing device 40 in the embodiment shown in FIGS. 1A-1C and the embodiment shown in FIGS. 2A-2C. For pressurizing applications, such as a pumping motor, it is controlled by the control host 20, which automatically pressurizes for watering after the closed sprinkler head bursts. As mentioned above, the method of pressurization can also use the highly pressurized method, that is, placing the aqueous solution storage space at a high place and using gravity, which is the implementation of Figures 1A-1C and 2A-2C The example shows that when the water tank 10 is disposed higher than the battery tanks 301 and 302, the aqueous solution in the water tank 10 can generate a high potential energy, and then the water distribution pipes 81 and 82 can be pressurized with the potential energy. Features. In another pressurizing method, a weight may be placed above the aqueous solution storage space as the pressurizing device 40.

However, in addition to the fire detection mechanism of the closed sprinkler's thermal automatic sprinkler, there are many other fire detection mechanisms that can be used. Please refer to FIGS. 3A-3D. The third embodiment of the new type of immersed battery cabinet system includes: a water tank (aqueous solution storage space) 10, a control host 20, a battery box 301, a battery box 302, and a water distribution pipeline. 80. Water distribution pipeline 81, water distribution pipeline 82, water outlet control gates 511-516, solenoid valves 61-62, fire detectors 71-72, etc., pressurizing device 40. The battery boxes 301 and 302 each have a battery space for accommodating the batteries 91, 92, and 93. In this embodiment, two batteries can be accommodated each. The water distribution pipe 80 connects the water tank 10 (aqueous solution storage space) and the battery tanks 301 and 302, and at least one water outlet (a branch is arranged in the battery tanks 301 and 302). Do not go through water distribution lines 81, 82). The water outlet control gates 511-516 are equipped with a water outlet control gate at the water outlet to discharge water when the batteries 91 and 93 are burned, so that the aqueous solution floods the batteries 91 and 93 in the battery boxes 301 and 302 to extinguish the fire. In this embodiment, each battery box 301, 302 is provided with three water outlets and three water outlet control gates (511-513, 514-516).

In addition, in this embodiment, solenoid valves 61-62 and fire detectors 71-72 are added. A solenoid valve 61 and a fire detector 71 are arranged in the battery box 301, and a solenoid valve 62 and A fire detector 72. Among them, one fire sensor 71, 72 is arranged in each of the battery boxes 301, 302, and is used to sense a fire condition and generate a fire signal. At least one solenoid valve 61, 62 is arranged outside each battery box 301, 302. The solenoid valves 61, 62 are connected to the water distribution pipes 80, 81, 82. After receiving the release signal, they are opened to enable the water distribution pipe 80 The aqueous solution flows from the water tank 10 to the water outlet control gate 511-516 (open sprinkler head). The control host 20 is electrically connected to the fire sensors 71-72 and the solenoid valves 61-62. When one of the fire sensors 71-72 generates a fire signal, the corresponding solenoid valve 61-62 is controlled so that the aqueous solution passes through the water. The control gates 511-516 are injected into the corresponding battery boxes 301, 302.

The fire sensors 71 and 72 are selected from a smoke sensor, a temperature sensor, a photoelectric sensor, an infrared sensor, or a current sensor. Among them, the current sensor is arranged on the batteries 91, 92, and 93. When it generates a large current, it can be judged that it is likely to cause a fire.

In this embodiment, an open sprinkler is used as the water outlet control gates 511-516. The open sprinkler is open. When the solenoid valve 61 or 62 is released, the aqueous solution is sent from the water tank 10 to the water distribution pipe via the water distribution pipe 81 or 82 through the water outlet control gate 511-513 or the water outlet control. Gates 514-516 spurted. In other words, the biggest difference from Figures 1A-1C is that the open sprinkler used in the embodiment of Figures 3A-3C is reusable, while the closed sprinkler is used once, and the two sense fire The mechanism is different. However, it is the same that the purpose of the immersion battery intended by the new model can be achieved.

Similarly, in the embodiment of FIGS. 3A-3D, the arrangement of the open sprinkler is provided at the bottom of the battery boxes 301 and 302, as shown in the plan view of FIG. 3C, which is the same as the embodiment of FIGS. 2A-2C. . The fire detectors 71 and 72 are disposed on the top of the battery boxes 301 and 302, as shown in the bottom view in FIG. 4D.

As for another embodiment of the present invention, in the embodiment shown in FIGS. 3A-3D, the water outlet control gates 511-516 can also be provided on the top of the battery boxes 301, 302, as shown in the embodiment shown in FIGS. 4A-4C . In this embodiment, two fire detectors 71a, 71b, a fire detector 72a, and another fire detector are arranged in the battery boxes 301 and 302, respectively. The rest are the same as the embodiment in FIGS. 3A-3D, and will not be repeated here.

Next, please refer to FIGS. 5A-5C, another embodiment of the new type of immersed battery cabinet system. In this embodiment, a set of water distribution pipeline 100 and aqueous solution drain box 200 are added, which may be referred to as a second water distribution pipeline, and the original water distribution pipeline 80 may be referred to as a first water distribution pipeline. The purpose of adding the water distribution pipeline 100 and the aqueous solution drain box 200 is to allow the aqueous solution in the water tank 10 to be flooded in the battery box 301, 302, or 303, and the battery level can be controlled after the battery is flooded. In the box body, it will not overflow to the outside of the battery box to protect other batteries that have not been fired.

Please refer to Figures 5A-5C. When this new type of immersed battery cabinet system contains When there are multiple sets of battery boxes, there are three battery boxes 301, a battery box 302, and a battery box 303 in this embodiment. The volume of the aqueous solution in the water tank 10 must be able to fill at least these three battery tanks. Therefore, in the event of a fire in only one battery box, measures to prevent overflow are necessary. The new model realizes this function through the water distribution pipeline 100. Among them, the water distribution pipe 100 is connected to the battery box 301, the battery box 302, the battery box 303, and the aqueous solution drain box 200 (having an aqueous solution drain space 201), and the water distribution pipe 100 is connected to the battery box 301, the battery box 302, and the battery box The set height of 303 is, for example, the set height is close to the top surface of the battery 91, battery 92, and battery 93 placed in the battery space, as shown in FIG. 5C. Due to the set height, once the entire battery is flooded with the aqueous solution, the excess aqueous solution will overflow to the aqueous solution discharge box 200 through the water distribution pipe 100 without overflowing the battery box, affecting the operation of other normal battery boxes. , You can further reduce the expansion of damage.

In addition, the new type is further provided with a check valve 111, a check valve 112, and a check valve 113 in the water distribution pipeline 100, which are individually arranged at the water outlets of the battery box 301, the battery box 302, and the battery box 303. Because the water distribution pipe 100 is in a connected state, if there is no check valve, there may be a fire in battery box 301 and no fire in battery box 302 and battery box 303. The aqueous solution in battery box 301 will pass through the water distribution pipe. 100 and overflow into the battery box 302 and the battery box 303. Because the height of the battery box 302 and the battery box 303 is lower than the battery box 301. Therefore, after the water distribution pipeline 100 is configured with a check valve, the water flow direction in the battery box is restricted to flow from the inside to the outside of the battery box. The highest battery box 301 may not be provided with a check valve.

In addition, the water distribution pipe 80 is connected to the battery box 301, the battery box 302, and the battery box 303 at the bottom of the battery box. Because, the embodiment of FIGS. 5A-5C further adds a configuration of an on-off valve 131, as shown in FIGS. 5A and 5B. The water distribution line 80 is connected to the aqueous solution discharge in this embodiment. The flow box 200 and the on-off valve 131 are arranged before the water distribution pipe 80 enters the aqueous solution drain box 200, so that the battery box submerged with the aqueous solution is allowed to drain water to the aqueous solution drain space 200 after being opened. By adding this function, the water solution in the misfired battery box can be quickly discharged for battery replacement. The on-off valve 131 is a solenoid valve that can be connected to the control host 20 for control; or the on-off valve 131 can be a manual on-off valve.

Next, please refer to FIG. 6, another embodiment of the novel immersed battery cabinet system. It illustrates another embodiment of the arrangement of the water distribution pipe 100, which is different from the embodiment of FIG. 5A. The water distribution pipe 100 uses an L-shaped connection pipe in a lower battery cabinet. In this way, without using a check valve, when the overflow water of the battery box 301 or the battery box 302 flows to the aqueous solution discharge box 200, it does not flow to the battery box 302 or the battery box 303. As for another embodiment of the present invention, a V-shaped connecting pipe structure can also be adopted, and the same effect can be achieved.

The novel immersed battery cabinet system can be applied to battery energy storage systems, electric vehicles, electric vehicles, and the like. When applied to a battery energy storage system, the aqueous solution storage space (water tank) can be used at a higher place to pressurize in a potential energy manner. When applied to electric vehicles and electric vehicles, the battery and the backup motor can be used to pressurize, so that the aqueous solution in the aqueous solution storage space (water tank) can be injected into the burning battery box when the battery is burned.

Although the technical content of the new model has been disclosed as above with preferred embodiments, it is not intended to limit the new model. Anyone skilled in this art without making any changes and retouching without departing from the spirit of the new model should be covered by the new model. Therefore, the protection scope of this new model shall be determined by the scope of the attached patent application.

Claims (14)

A flooded battery cabinet system includes: at least one aqueous solution storage box having an aqueous solution storage space for containing an aqueous solution; at least one aqueous solution drain box having an aqueous solution discharge space for receiving the aqueous solution; At least one battery box, each of which has a battery space for accommodating at least one battery; a first water distribution pipeline connecting the aqueous solution accommodating box and the at least one battery box, and in each of the battery boxes At least one water outlet is arranged in the body; at least one water outlet control gate is arranged at the water outlet, and the water is discharged when the battery is burned to make the aqueous solution flood the battery in the battery box for fire extinguishing; and A second water distribution pipe is connected to the at least one battery box and the at least one aqueous solution drain box. The second water distribution pipe is connected to a set height of the battery box, and the set height is close to the battery placed in the battery space. The top surface of the battery. The flooded battery cabinet system according to claim 1, further comprising: at least one check valve arranged in the second water distribution pipeline, so that the direction of the water flow of the second water distribution pipeline is from the inside to the battery box. External flow. The submerged battery cabinet system according to claim 1, wherein the first water distribution pipe is connected to the at least one battery box at a bottom of the at least one battery box. The submerged battery cabinet system according to claim 3, wherein the first water distribution pipeline is further connected to the at least one aqueous solution bleed tank, and further comprises: a switching valve configured in the second water distribution pipeline to enter the at least Before an aqueous solution bleed box, after opening, the battery box immersed with the aqueous solution was allowed to drain water to the at least one aqueous solution bleed box. The flooded battery cabinet system according to claim 1, wherein the at least one aqueous solution drain box is replaceable. The submerged battery cabinet system according to claim 4, wherein the switching valve is a solenoid valve. The submerged battery cabinet system according to claim 1, wherein the aqueous solution is selected from tap water, sodium chloride (NaCl) solution, sodium hydroxide (NaOH) solution, and sodium sulfate (NaSO4) solution. The flooded battery cabinet system according to claim 7, wherein the flooded battery cabinet system, wherein the electrolyte weight of the sodium chloride (NaCl) solution, sodium hydroxide (NaOH) solution, sodium sulfate (NaSO4) solution The percentage concentration is between 0.2% and 26%. The submerged battery cabinet system according to claim 1, wherein the water outlet control gate is a closed sprinkler, and the heat-sensitive automatic sprinkler temperature of the closed sprinkler is between 60 ° C and 150 ° C . The flooded battery cabinet system according to claim 1, wherein the water outlet control gate is an open sprinkler, and the flooded battery cabinet system further includes: at least one fire sensor in each battery box At least one is configured to sense a fire condition and generate a fire signal; at least one solenoid valve is arranged at least one outside of each of the battery boxes, and the solenoid valve is connected to the water distribution pipeline, and after receiving a release signal Opening to allow the aqueous solution in the water distribution pipeline to flow from the aqueous solution accommodating space to the open sprinkler head so that the aqueous solution fills the battery box; and a control host electrically connected to the at least one fire sensor, the At least one solenoid valve, when one of the at least one fire sensor generates the fire signal, the corresponding solenoid valve is controlled so that the aqueous solution fills the corresponding battery box. The flooded battery cabinet system according to claim 10, wherein the fire sensor is selected from a smoke sensor, a temperature sensor, a photoelectric sensor, an infrared sensor, and a current sensor. . The flooded battery cabinet system according to claim 10, further comprising: a pressurizing device connected to the control host and controlled by the control host to pressurize the aqueous solution in the aqueous solution storage box so that The aqueous solution can be quickly filled to the corresponding battery box. The flooded battery cabinet system according to claim 1, further comprising: a pressurizing device for pressurizing the aqueous solution in the aqueous solution storage box, so that the aqueous solution can be quickly filled to the corresponding battery box. The immersed battery cabinet system according to claim 1, wherein the at least one aqueous solution containing box, the at least one battery box, and the at least one aqueous solution discharge box are sequentially arranged from top to bottom.