CN110120477A - High safety performance energy-storage battery cluster - Google Patents

Abstract

The present invention provides a cluster of energy storage batteries with high safety performance. The cluster of energy storage batteries with high safety performance includes: a medium circulation pipeline and a plurality of cabinets for energy storage batteries; Both include: the cabinet body, fire-fighting pipelines and multiple battery boxes; among them, the top of the cabinet body is provided with a first air inlet and an air outlet mechanism, and the fire-fighting pipeline is installed in the cabinet body; the side of each battery box is provided with There is a first air outlet, and the fire-fighting pipeline of each energy storage battery cabinet is connected with the medium circulation pipe to inject fire extinguishing agent and re-ignition inhibitor into the cabinet body, and overflow to each battery through each first air outlet. inside the box. In the present invention, when the battery burns, the fire extinguishing agent can first overflow into each battery box through the fire-fighting pipeline and the first air outlet, so as to extinguish the open fire in the battery box, and then make the re-ignition inhibitor overflow again into each battery box and submerge the entire cabinet so that the batteries cannot re-ignite.

Description

High safety performance energy storage battery cluster

technical field

The invention relates to the technical field of energy storage batteries, in particular to a cluster of energy storage batteries with high safety performance.

Background technique

Lithium-ion batteries have the advantages of large specific capacity, high working voltage, long cycle life, small size, and light weight, and can be used in many scenarios. In electric vehicles and energy storage systems, the power battery of the power supply is required to have a large capacity and voltage, which requires multiple single cells to be installed in the battery box and connected in series and parallel to form a battery pack to achieve power. According to the requirements of the power source, multiple battery boxes are combined to form an energy storage power station. When a fire occurs, the fire extinguishing agent can effectively extinguish the open flame, but due to its own characteristics, the lithium battery has a greater possibility of re-ignition, and the use environment of the energy storage system is mostly a semi-open environment. will gradually decrease. When the lithium battery re-ignites, the concentration of the fire extinguishing agent may not reach the expected concentration, which will cause the re-ignition of the battery and expand the fire.

Contents of the invention

In view of this, the present invention proposes a high-safety energy storage battery cluster, aiming to solve the problem that the current battery box is easy to re-ignite.

The present invention proposes a cluster of energy storage batteries with high safety performance. The cluster of energy storage batteries with high safety performance includes: medium circulation pipes and multiple cabinets of energy storage batteries; wherein, the cabinets of energy storage batteries are arranged side by side; Both include: the cabinet body, fire-fighting pipelines and multiple battery boxes; among them, the top of the cabinet body is provided with a first air inlet and an air outlet mechanism, and the fire-fighting pipeline is installed in the cabinet body; the side of each battery box is provided with There is a first air outlet, and the fire-fighting pipeline of each energy storage battery cabinet is connected with the medium circulation pipe to inject fire extinguishing agent and re-ignition inhibitor into the cabinet body, and overflow to each battery through each first air outlet. inside the box.

Further, in the above-mentioned high-safety energy storage battery cluster, the cabinet body is provided with partitions forming the air inlet and outlet ducts, and there is a preset distance between the partitions and the bottom of the cabinet body; The air duct is set, and each battery box is located in the air outlet duct.

Further, in the above-mentioned high-safety energy storage battery cluster, each battery box is arranged in a row in the cabinet body, and a serpentine air duct is formed between each battery box.

Further, in the above-mentioned high-safety energy storage battery cluster, the bottom of each battery box is provided with a second air inlet, and in any two adjacent battery boxes, the airflow enters from the second air inlet of the battery box below. And flow out from the first air outlet of the battery box below, then enter from the second air inlet of the battery box above and flow out from the first air outlet of the battery box above, to form a serpentine air duct.

Further, in the above-mentioned high-safety performance energy storage battery cluster, the first air outlets of the battery boxes in the same row are located on the same side; or the first air outlets of the battery boxes in the same row are located on different sides; or the batteries in the same row The first air outlets of the box are located on opposite sides of the battery box.

Further, in the above-mentioned cluster of high-safety energy storage batteries, there are multiple second air inlets, and each second air inlet is opened sequentially along the arrangement direction of the batteries in the battery box.

Further, in the above-mentioned high-safety energy storage battery cluster, at least two rows of batteries are accommodated in the battery box, and there is a gap between each row of batteries, and the second air inlet corresponds to the gap.

Further, the above-mentioned high-safety performance energy storage battery cluster also includes: a plurality of support plates, support plates are arranged between any two adjacent battery boxes to support the battery boxes, and each support plate is opened There is a vent, and the vent corresponds to the second air inlet opened by the battery box above it.

Further, in the above-mentioned high-safety energy storage battery cluster, the air outlet mechanism includes: a second air outlet opened on the top of the cabinet body; a fan, and the fan is arranged at the second air outlet.

Further, in the above-mentioned high-safety energy storage battery cluster, the air outlet mechanism further includes: an air guide pipe, which is arranged on the fan, and the air guide pipe bends away from the position where the first air inlet is located.

Further, in the above-mentioned high-safety energy storage battery cluster, the partition is extended to the outside of the cabinet body, and separates the first air inlet from the air outlet mechanism.

In the present invention, under the action of the air outlet mechanism, the airflow enters the cabinet body from the first air inlet, flows through each battery box from bottom to top, and finally flows out from the air outlet mechanism, thereby cooling the battery and maintaining the battery life. Safe operation; at the same time, when the battery is thermally out of control, the fire extinguishing agent is first injected into the cabinet body through the medium circulation pipeline and the fire protection pipeline, and the fire extinguishing agent overflows into each battery box through the first air outlet, thereby extinguishing the battery box. extinguish the open flame; then inject the re-ignition inhibitor into the cabinet body through the medium circulation pipe and the fire-fighting pipeline, the re-ignition inhibitor overflows into each battery box through the first air outlet, and immerses the entire cabinet, so that the battery At the same time, a serpentine air duct is formed between the battery boxes. After entering the air outlet duct, the air flow starts from the battery box located at the bottom, flows through each battery box in a serpentine flow path, and finally flows from the outlet air duct. The air flows out from the wind mechanism to maximize the heat dissipation of the battery box. The setting of the second air inlet, the first air outlet and the air outlet together form a serpentine air duct, which can better dissipate heat from the battery box; moreover, the battery box is sealed and connected with the cabinet body, which can store the re-ignition inhibitor. Thereby effectively preventing the battery from reflashing.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 is the front view of the high-safety performance energy storage battery cluster provided by the embodiment of the present invention;

Fig. 2 is a top view of a cluster of high-safety energy storage batteries provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of the battery cabinet in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the three-dimensional structure of the battery cabinet in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 5 is a schematic diagram of the internal structure of the battery cabinet in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 6 is a cross-sectional view of the battery cabinet in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 7 is a partial enlarged view of the interior of the battery cabinet in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 8 is a schematic diagram of the air flow in the battery box in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 9 is a schematic structural diagram of the battery box in the high-safety energy storage battery cluster provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of the internal structure of the battery box in the high-safety energy storage battery cluster provided by the embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to FIG. 1 to FIG. 5 , the preferred structures of the high-safety energy storage battery cluster provided by this embodiment are shown in the figures. As shown in the figure, the high-safety energy storage battery cluster includes: a medium circulation channel 8 and a plurality of energy storage battery cabinets 9, and the plurality of energy storage battery cabinets 9 are arranged side by side. Each energy storage battery cabinet 9 includes: a cabinet body 1 , a fire-fighting pipeline 2 and a plurality of battery boxes 3 . Wherein, the top of the cabinet body 1 is provided with a first air inlet 11 and an air outlet mechanism 12, and both the first air inlet 11 and the air outlet mechanism 12 may be multiple. The cabinet body 1 is provided with a partition 4, the top of the partition 4 is in contact with the top of the cabinet body 1, and the bottom of the partition 4 has a second preset distance from the bottom of the cabinet body 1. During specific implementation, the second preset distance The set distance can be 100mm-300mm. The partition 4 divides the internal space of the cabinet body 1 into two parts, the space on one side of the partition 4 is the air inlet duct, and the space on the other side is the air outlet duct. The battery boxes 3 are stacked in rows and arranged in the cabinet body 1 , and the battery boxes 3 can be in multiple rows, and the bottom battery box 3 in each row of battery boxes 3 has a certain distance from the bottom of the cabinet body 1 . All battery boxes 3 are located on the same side of the partition plate 4 , and in practice, all battery boxes 3 are located in the air outlet duct, that is, all battery boxes 3 are located below the air outlet mechanism 12 . The fire-fighting pipeline 2 is installed in the cabinet body 1 and arranged along the air inlet duct. The side of each battery box 3 is provided with a first air outlet 31. The bottom end of the fire-fighting pipeline 2 and the bottom of the cabinet body 1 have a second A preset distance. In practice, the first preset distance is greater than the second preset distance to facilitate air circulation and fire extinguishing agent diffusion. The first preset distance may be 100mm-500mm. The fire-fighting pipeline 2 of each energy storage battery cabinet 9 is connected with the medium circulation pipeline 8, and the fire extinguishing agent and the re-ignition inhibitor can be injected into the cabinet body 1 through the medium circulation pipeline 8 and the fire-fighting pipeline 2, and then the fire extinguishing agent and The re-ignition inhibitor can overflow into the battery box 3 through the first air outlet 31 . Each battery box 3 is sealed and connected with the cabinet body 1, so as to better store the re-ignition inhibitor and effectively prevent the re-ignition of the battery 5 . In practice, there may be two fire-fighting pipelines 2 for injecting the fire extinguishing agent and the resurgence inhibitor into the cabinet body 1 respectively, so as to facilitate the separate control of the injection of the fire extinguishing agent and the resurgence inhibitor.

Under the action of the air outlet mechanism 12, the air flow enters the air inlet duct of the cabinet body 1 from the first air inlet 11, and enters the air outlet duct from the space between the bottom end of the partition plate 4 and the bottom of the cabinet body 1, and flows from It flows through each battery box 3 from bottom to top, and finally flows out from the air outlet mechanism 12, thereby cooling the battery 5 to maintain the safe operation of the battery 5; The pipeline 2 injects the fire extinguishing agent into the cabinet body 1, and the fire extinguishing agent overflows into each battery box 3 through the first air outlet 31, thereby extinguishing the open fire in the battery box 3; and then passes through the medium circulation pipe 8 and the fire pipe Road 2 injects the re-ignition inhibitor into the cabinet body 1, and the re-ignition inhibitor overflows into each battery box 3 through the first air outlet 31, and immerses the entire cabinet, so that the battery 5 cannot be re-ignited, and the fire extinguishing agent and re-ignition The injection time interval of the combustion agent is 10-300 seconds; at the same time, when the fire extinguishing agent and the re-ignition agent are introduced, the airflow flowing in the cabinet body 1 through the first air inlet 11 and the air outlet mechanism 12 will also give The fire extinguishing agent and re-ignition inhibitor have a certain flow assist and guidance, so as to speed up the process of extinguishing the fire and inhibiting the re-ignition.

In the above embodiment, a serpentine air duct is formed between the battery boxes 3. After the airflow enters the air outlet duct, it starts from the battery box 3 located at the bottom and flows through each battery box 3 sequentially in a serpentine flow path, and finally The air flows out from the air outlet mechanism 12, thereby maximally dissipating heat from the battery box 3. During specific implementation, referring to Fig. 6 and Fig. 7, the bottom of each battery box 3 is provided with a second air inlet 32, and in any two adjacent battery boxes 3, the air flow is from the second air inlet of the battery box 3 located below. The air outlet 32 enters and flows out from the first air outlet 31 of the battery box 3 located below, and then enters from the second air inlet 32 of the battery box 3 located above and flows out from the first air outlet 31 of the battery box 3 located above , thus forming a serpentine air duct. The first air outlet 31 of each battery box 3 can be one, and the first air outlet 31 can be opened on the side of the same side of each battery box 3, and can also be opened on the side of different sides of each battery box 3, thus forming A serpentine air duct is formed, or, referring to Fig. 8, first air outlets 31 are provided on opposite sides of each battery case 3, so that a serpentine air duct is respectively formed on both sides of the batteries 5 in the entire row . Specifically, referring to FIG. 9 , the battery box 3 accommodates multiple rows of batteries 5 , and the first air outlet 31 is opened along the arrangement direction of a row of batteries 5 , and the length is slightly shorter than the length of a row of batteries 5 .

Referring to FIG. 10 , in the above embodiment, there are multiple second air inlets 32 , and each second air inlet 32 is opened sequentially along the arrangement direction of a row of batteries 5 . In practice, the second air inlets 32 are waist-shaped holes. The battery box 3 contains at least two rows of batteries 5, and there is a gap 6 between two adjacent rows of batteries 5. The second air inlet 32 is located at the bottom of the battery box 3 and corresponds to the gap 6, so that the airflow enters the battery box 3 Inside.

Referring to Fig. 6 and Fig. 7 again, it also includes: a plurality of support plates 7, each support plate 7 is connected to the inner wall of the cabinet body 1, and any two adjacent battery boxes 3 are provided with a support plate 7, The support plate 7 can support the battery box 3 above it to a certain extent. Each support plate 7 is provided with a vent 71 corresponding to the second air inlet 32 provided on the battery box 3 above the vent 71 to ensure that the air flow enters the battery box 3 smoothly. During specific implementation, the vents 71 may correspond to the second air inlets 32 one by one, or one vent 71 may correspond to several second air inlets 32 . It should be noted that the arrangement of the second air inlet 32 , the first air outlet 31 and the air outlet 71 together form a serpentine air duct.

Referring to Fig. 3 and Fig. 6 again, the air outlet mechanism 12 includes: a second air outlet (not shown in the figure) and a fan 121, wherein the second air outlet is opened on the top of the cabinet body 1, and the fan 121 is arranged on the second The air outlet is used to guide the airflow in the cabinet body 1 to be discharged. During specific implementation, the fan 121 is located outside the cabinet body 1 . The air outlet mechanism 12 also includes: an air guide pipe 122, which is arranged on the fan 121, and the air guide pipe 122 is bent away from the position where the first air inlet 11 is located, so as to guide the discharged air with a higher temperature to The direction away from the first air inlet 11 ensures that the temperature of the airflow flowing in from the first air inlet 11 is lower, so as to better cool the battery box 3 .

In the above embodiment, the top of the partition 4 extends to the outside of the cabinet body 1, and separates the first air inlet 11 from the air outlet mechanism 12, so as to further prevent the discharged high-temperature airflow from affecting the airflow near the first air inlet 11. Influenced by the temperature, the cooling effect of the airflow on the battery box 3 is ensured.

To sum up, in this embodiment, under the action of the air outlet mechanism 12, the airflow enters the cabinet body 1 from the first air inlet 11, flows through each battery box 3 from bottom to top, and finally flows out from the air outlet mechanism 12, thereby Cool the battery 5 to maintain the safe operation of the battery 5; at the same time, when the battery 5 is thermally out of control, the fire extinguishing agent is first injected into the cabinet body 1 through the medium circulation pipe 8 and the fire protection pipe 2, and the fire extinguishing agent passes through the first The air outlet 31 overflows into each battery box 3, thereby extinguishing the open fire in the battery box 3; and then injects the re-ignition inhibitor into the cabinet body 1 through the medium circulation pipe 8 and the fire-fighting pipeline 2, and the re-ignition inhibitor It overflows into each battery box 3 through the first air outlet 31, and immerses the entire cabinet, so that the battery 5 cannot be re-ignited; at the same time, a serpentine air duct is formed between each battery box 3, and after the airflow enters the air outlet duct, Starting from the battery box 3 located at the bottom, it flows through each battery box 3 sequentially in a serpentine flow path, and finally flows out from the air outlet mechanism 12, thereby maximally dissipating heat from the battery box 3 . The setting of the second air inlet 32, the first air outlet 31 and the air outlet 71 together form a serpentine air duct, which can better dissipate heat from the battery box 5; The re-ignition inhibitor is stored, thereby effectively preventing the re-ignition of the battery 5 .

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (11)

1. A cluster of high-safety energy storage batteries, characterized in that it comprises: a medium circulation pipeline (8) and a plurality of energy storage battery cabinets (9); wherein, Each of the energy storage battery cabinets (9) is arranged side by side, and each of the energy storage battery cabinets (9) includes: a cabinet body (1), a fire-fighting pipeline (2) and a plurality of battery boxes (3); wherein, the The top of the cabinet body (1) is provided with a first air inlet (11) and an air outlet mechanism (12), and the fire-fighting pipeline (2) is installed in the cabinet body (1); The side of each battery box (3) is provided with a first air outlet (31), and the fire-fighting pipeline (2) of each energy storage battery cabinet (9) is connected to the medium circulation pipeline (8) connected to each other so as to inject fire extinguishing agent and re-ignition inhibitor into the cabinet body (1), and overflow into each of the battery boxes (3) through each of the first air outlets (31). 2. The high-safety energy storage battery cluster according to claim 1, characterized in that, The cabinet body (1) is provided with a partition (4) forming an air inlet duct and an air outlet duct, and the partition board (4) has a preset distance from the bottom of the cabinet body (1); The fire-fighting pipeline (2) is arranged along the air inlet duct, and each of the battery boxes (3) is located in the air outlet duct. 3. The high-safety energy storage battery cluster according to claim 2, characterized in that, The battery boxes (3) are arranged in a row in the cabinet body (1), and a serpentine air duct is formed between the battery boxes (3). 4. The high-safety energy storage battery cluster according to claim 3, characterized in that, The bottom of each of the battery boxes (3) is provided with a second air inlet (32), and in any adjacent two of the battery boxes (3), the airflow flows from the The second air inlet (32) enters and flows out from the first air outlet (31) of the battery box (3) located below, and then flows out from the second air inlet (32) of the battery box (3) located above Enter and flow out from the first air outlet (31) of the battery box (3) located above to form the serpentine air duct. 5. The high-safety energy storage battery cluster according to claim 1, characterized in that, The first air outlets (31) of the battery boxes (3) in the same column are located on the same side; or The first air outlets (31) of the battery boxes (3) in the same row are located on different sides; or The first air outlets (31) of the battery boxes (3) in the same row are located on opposite sides of the battery boxes (3). 6. The high-safety energy storage battery cluster according to claim 4, characterized in that, There are multiple second air inlets (32), and each of the second air inlets (32) is opened sequentially along the arrangement direction of the batteries (5) in the battery box (3). 7. The high-safety energy storage battery cluster according to claim 4 or 6, characterized in that, The battery box (3) contains at least two rows of batteries (5), and there is a gap (6) between each row of batteries (5), and the second air inlet (32) corresponds to the gap (6). . 8. The high-safety energy storage battery cluster according to claim 4, further comprising: A plurality of support plates (7), the support plates (7) are arranged between any two adjacent battery boxes (3) to support the battery boxes (3), and each The support plates (7) are all provided with vents (71), and the vents (71) correspond to the second air inlets (32) opened by the battery box (3) above them. 9. The cluster of high-safety energy storage batteries according to any one of claims 1-5, characterized in that the air outlet mechanism (12) comprises: A second air outlet opened on the top of the cabinet body (1); A fan (121), the fan (121) is arranged at the second air outlet. 10. The cluster of high-safety energy storage batteries according to claim 9, characterized in that, the air outlet mechanism (12) further comprises: An air guide pipe (122), the air guide pipe (122) is arranged on the fan (121), and the air guide pipe (122) bends away from the position where the first air inlet (11) is located . 11. The high-safety energy storage battery cluster according to claim 2, characterized in that, The partition (4) is extended to the outside of the cabinet body (1), and separates the first air inlet (11) from the air outlet mechanism (12).