CN219783601U - Battery fire protection system and energy storage device - Google Patents

Abstract

The utility model discloses a battery firefighting system and energy storage equipment. The battery firefighting system includes a fire extinguishing agent storage chamber, a collection pipe and a plurality of connecting pipes. One end of the plurality of connecting pipes is connected to the collecting pipe, and a third connection pipe is provided on the connecting pipe. A solenoid valve and a first sensor. The collecting pipe is connected with the fire extinguishing agent storage chamber. A second solenoid valve is arranged between the collecting pipe and the fire extinguishing agent storage chamber. The electrical connection between the first solenoid valve, the second solenoid valve and the first sensor is connection, the first solenoid valve is a normally open solenoid valve, and the second solenoid valve is a normally closed solenoid valve. When the first sensor alarms, the corresponding first solenoid valve remains open, the remaining first solenoid valves are closed, and the second solenoid valve The valve opens. Setting the first solenoid valve as a normally open solenoid valve can ensure the continuity of the connecting pipe, so that the fire extinguishing agent can flow into the failed battery cluster to extinguish the fire; each battery cluster has a corresponding first sensor to detect The time does not increase as the number of clusters increases.

Description

Battery Fire Protection Systems and Energy Storage Equipment

Technical field

The utility model relates to the technical field of battery safety protection, and in particular to a battery fire protection system and energy storage equipment.

Background technique

Electrochemical energy storage technology represented by lithium-ion batteries has become the energy storage device with the fastest growing installed capacity in the field of electric energy storage due to its flexibility and rapidity. In order to improve the safety of energy storage equipment, a fire protection system needs to be equipped to detect the status of the battery cluster in real time. The battery cluster level of the traditional fire protection system adopts a dual-pipeline design, which has a complex structure. Moreover, the traditional fire protection strategy uses cluster-by-cluster taking-in-turn suction detection, which cannot detect the conditions of each cluster at the same time. The detection interval of each cluster is long and there is a delay.

Utility model content

One purpose of embodiments of the present invention is to provide a battery firefighting system that can simultaneously detect the status of each battery cluster and has a fast fire extinguishing speed.

Another object of embodiments of the present invention is to provide an energy storage device with a high safety factor.

In order to achieve the above purpose, the present utility model adopts the following technical solutions:

In a first aspect, a battery fire protection system is provided, including a fire extinguishing agent storage chamber, a collection pipe and a plurality of connecting pipes. One end of the plurality of connecting pipes is connected to the collecting pipe, and the other end is used to communicate with the battery cluster. A first solenoid valve and a first sensor are provided on the connecting pipe, the collecting pipe is connected to the fire extinguishing agent storage chamber, and a second solenoid valve is provided between the collecting pipe and the fire extinguishing agent storage chamber. The first solenoid valve, the second solenoid valve and the first sensor are electrically connected. The first solenoid valve is a normally open solenoid valve, and the second solenoid valve is a normally closed solenoid valve. When the first sensor alarms, the corresponding first solenoid valve remains open, the remaining first solenoid valves are closed, and the second solenoid valve is opened.

As a preferred solution of the battery fire fighting system, it includes a vacuum tube and a vacuum pump, and both ends of the vacuum tube are connected to the collecting pipe and the vacuum pump respectively.

As a preferred solution of the battery fire protection system, the connection position between the vacuum tube and the collecting pipe is located in the middle of the collecting pipe.

As a preferred solution of the battery fire protection system, a second sensor is provided on the vacuum tube, and the first solenoid valve, the second solenoid valve, the first sensor and the second sensor are electrically connected. .

As a preferred solution of the battery fire protection system, a third solenoid valve is provided on the vacuum tube, and there is an electrical connection between the first solenoid valve, the second solenoid valve, the third solenoid valve and the first sensor. Sexual connection, the third solenoid valve is a normally open solenoid valve.

As a preferred solution of the battery fire protection system, the fire extinguishing agent storage chamber includes an independent first chamber and a second chamber, and the second chamber is provided corresponding to the first chamber and the second chamber. Solenoid valve, the first chamber is used to store fire extinguishing agent, and the second chamber is used to store water-based fire extinguishing agent.

As a preferred solution of the battery fire-fighting system, the first chamber and the second chamber are respectively located at two ends of the collecting pipe and connected with the two ends of the collecting pipe.

As a preferred solution of the battery fire protection system, the first sensor includes an explosion-proof combustible gas detection module, a temperature detection module, a humidity detection module, a smoke detection module and a CO detection module.

As a preferred solution of the battery fire protection system, the first sensor is provided at one end of the connecting pipe close to the battery cluster.

In a second aspect, an energy storage device is provided, including a plurality of battery clusters and the above-mentioned battery fire-fighting system, and the battery clusters are connected to connecting pipes of the battery fire-fighting system.

The beneficial effects of the utility model are: each first sensor can detect the condition of each battery cluster in real time. When a battery cluster fails and catches fire, the corresponding first sensor can immediately send out an alarm. At this time, the corresponding first electromagnetic The valve remains open, the remaining first solenoid valves are closed, and the second solenoid valve is opened, so that the fire extinguishing agent can flow into the failed battery cluster in a directed manner; the connecting pipe is equivalent to a fire channel, and the first solenoid valve is set to a normally open solenoid valve. The valve can ensure the continuity of the connecting pipe and the smooth flow of the fire channel, so that the fire extinguishing agent can flow into the failed battery cluster to extinguish the fire without affecting the normal operation of other battery clusters; during normal use, each battery cluster With the corresponding first sensor, the detection time will not increase as the number of clusters increases, and there is no detection interval between each battery cluster, reducing delays.

Description of the drawings

The utility model will be further described in detail below based on the drawings and embodiments.

Figure 1 is a schematic diagram of the battery fire protection system and battery cluster according to the embodiment of the present invention.

In the picture:

1. Collection pipe; 2. Connecting pipe; 3. Vacuum tube; 4. First chamber; 5. Second chamber; 601. First sensor; 602. First solenoid valve; 7. Second solenoid valve; 801. Second sensor; 802, third solenoid valve; 9, battery cluster.

Detailed ways

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only Some embodiments of the present invention are not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, unless otherwise explicitly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a detachable connection. Integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in Figure 1, a battery firefighting system provided by the utility model includes a fire extinguishing agent storage chamber, a collection pipe 1 and a plurality of connecting pipes 2. One end of the plurality of connecting pipes 2 is connected to the collecting pipe 1, and the other end is used for It is connected with the battery cluster 9. The connecting pipe 2 is provided with a first solenoid valve 602 and a first sensor 601. The collecting pipe 1 is connected with the fire extinguishing agent storage chamber. A second solenoid valve 7 is provided between the collecting pipe 1 and the fire extinguishing agent storage chamber. , the first solenoid valve 602, the second solenoid valve 7 and the first sensor 601 are electrically connected. The first solenoid valve 602 is a normally open solenoid valve, and the second solenoid valve 7 is a normally closed solenoid valve. Any first When the sensor 601 alarms, the corresponding first solenoid valve 602 remains open, the remaining first solenoid valves 602 are closed, and the second solenoid valve 7 is opened. In this embodiment, each first sensor 601 can detect the condition of each battery cluster 9 in real time. When a battery cluster 9 fails and catches fire, the corresponding first sensor 601 can immediately send an alarm. At this time, the corresponding first sensor 601 can detect the condition of each battery cluster 9 in real time. One solenoid valve 602 remains open, the remaining first solenoid valves 602 are closed, and the second solenoid valve 7 is opened, so that the fire extinguishing agent can flow into the failed battery cluster 9 in a directed manner; in this embodiment, the connecting pipe 2 is equivalent to a fire extinguisher. Channel, setting the first solenoid valve 602 as a normally open solenoid valve can ensure the continuity of the connecting pipe 2 and ensure the smooth flow of the fire channel, so that the fire extinguishing agent can flow into the failed battery cluster 9 to extinguish the fire without affecting other Normal operation of the battery cluster 9; during normal use, each battery cluster 9 has a corresponding first sensor 601, the detection time will not increase as the number of clusters increases, and there is no detection between each battery cluster 9 interval to reduce latency.

Specifically, the battery fire protection system includes a vacuum tube 3, and both ends of the vacuum tube 3 are connected to the header pipe 1 and the vacuum pump respectively. The arrangement of the vacuum pipe 3 and the vacuum pump can form a negative pressure in the collecting pipe 1 and the connecting pipe 2. When the second solenoid valve 7 is opened, the fire extinguishing agent in the fire extinguishing agent storage chamber quickly enters the negative pressure collecting pipe 1 and connecting pipe 2. inside, thereby extinguishing the fire of the battery cluster 9.

Furthermore, the connection position between the vacuum tube 3 and the collecting pipe 1 is located in the middle of the collecting pipe 1 . In this embodiment, a plurality of connecting pipes 2 are arranged at intervals along the length direction of the collecting pipe 1. The connection position between the vacuum pipe 3 and the collecting pipe 1 is located in the middle of the collecting pipe 1, so that the air pressure at both ends of the collecting pipe 1 can be balanced as much as possible. , so that the air flow flowing toward the vacuum pump can also be formed in the connecting pipe 2 near the end to generate negative pressure.

In this embodiment, the battery firefighting system also includes a firefighting host. Optionally, a second sensor 801 is provided on the vacuum tube 3, and among the first solenoid valve 602, the second solenoid valve 7, the first sensor 601 and the second sensor 801 are electrically connected through the fire host, and the third solenoid valve 802 is a normally open solenoid valve. By setting the second sensor 801, the second sensor 801 can detect the concentration of the environment. The fire host compares the detected concentrations of the first sensor 601 and the second sensor 801. When there is an abnormality, the first electromagnetic field corresponding to the abnormal battery cluster 9 Valve 602 remains open and the remaining first solenoid valve 602 is closed.

Further, a third solenoid valve 802 is provided on the vacuum tube 3, and the first solenoid valve 602, the second solenoid valve 7, the third solenoid valve 802, the first sensor 601 and the second sensor 801 are electrically connected through the fire host. The third solenoid valve 802 is a normally open solenoid valve. By setting the third solenoid valve 802, the on and off of the vacuum tube 3 can be controlled. When the first sensor 601 and the second sensor 801 detect an abnormality, the first solenoid valve 602 corresponding to the abnormal battery cluster 9 remains open, and the remaining The first solenoid valve 602 is closed and the vacuum pump operates, causing a negative pressure to form inside the connecting pipe 2 corresponding to the collecting pipe 1 and the abnormal battery cluster 9. After reaching the negative pressure threshold, the third solenoid valve 802 is closed and the second solenoid valve 7 is opened. , release the fire extinguishing agent; the setting of the third solenoid valve 802 can close the vacuum tube 3 during the operation of the vacuum pump, to avoid the backflow of external gas from affecting the air pressure of the vacuum tube 3 and the collecting pipe 1 after the vacuum pump stops operating, and the setting of the third solenoid valve 802 can be closed Vacuum tube 3 prevents the fire extinguishing agent from influxing into the vacuum pump, protects the vacuum pump, and extends the service life of the vacuum pump.

Further, the fire extinguishing agent storage chamber includes an independent first chamber 4 and a second chamber 5. A second solenoid valve 7 is provided corresponding to the first chamber 4 and the second chamber 5. The first chamber 4 is used for Fire extinguishing agents are stored, and the second chamber 5 is used to store water-based fire extinguishing agents. In this embodiment, when an abnormality occurs, the first solenoid valve 602 corresponding to the abnormal battery cluster 9 remains open, the remaining first solenoid valves 602 are closed, and the vacuum pump operates so that the collecting pipe 1 and the abnormal battery cluster 9 are connected correspondingly. A negative pressure is formed inside the tube 2. After reaching the negative pressure threshold, the third solenoid valve 802 is closed, and the second solenoid valve 7 corresponding to the first chamber 4 is opened to release the fire extinguishing inhibitor. During this process, if the first sensor 601 appears and the second sensor 801 continues to detect abnormalities, indicating that the fire extinguishing inhibitor is not enough to extinguish the fire. At this time, all the second solenoid valves 7 are closed, the third solenoid valve 802 is opened, and the vacuum pump starts to work, so that the collecting pipe 1 and the abnormal battery cluster 9 A negative pressure is formed inside the corresponding connecting pipe 2. After reaching the negative pressure threshold, the third solenoid valve 802 is closed, the second solenoid valve 7 corresponding to the second chamber 5 is opened, and the water-based fire extinguishing agent is started. In this embodiment, the vacuum pump can operate in an intermittent mode.

Further, the first chamber 4 and the second chamber 5 are respectively located at both ends of the collecting pipe 1 and communicate with the two ends of the collecting pipe 1 . By connecting the first chamber 4 and the second chamber 5 with the two ends of the collecting pipe 1 respectively, it is possible to reduce the number of holes in the collecting pipe 1 and reduce the air tightness problem of the collecting pipe 1 .

Preferably, the first sensor 601 includes at least one of an explosion-proof combustible gas detection module, a temperature detection module, a humidity detection module, a smoke detection module, a CO detection module, an air pressure module, and a processing chip. In this embodiment, the first sensor 601 has an explosion-proof combustible gas detection module, temperature detection module, humidity detection module, smoke detection module, CO detection module, air pressure module and processing chip. By setting up an explosion-proof combustible gas detection module, a temperature detection module, a humidity detection module, a smoke detection module, a CO detection module, an air pressure module and a processing chip, the first sensor 601 can detect combustible gas concentration, temperature, humidity, smoke concentration, CO concentration ( CO, carbon monoxide, carbon monoxide) and air pressure, the processing chip can process the detection data and transmit the signal to the fire host. In this embodiment, IIC (Inter-Integrated Circuit, integrated circuit bus) communication is used between each module and the processing chip, and RS485 communication is used between the processing chip and the fire host. Of course, the components of the second sensor 801 are consistent with the first sensor 601, that is, the second sensor 801 also has an explosion-proof combustible gas detection module, a temperature detection module, a humidity detection module, a smoke detection module, a CO detection module, an air pressure module and a processing chip. .

In this embodiment, the first sensor 601 and the first solenoid valve 602 are integrated, the second sensor 801 and the third solenoid valve 802 are integrated, the first sensor 601 and the first solenoid valve 602 and the second sensor 801 and the third The solenoid valves 802 are respectively integrated into electromagnetic switches.

Furthermore, a first sensor 601 is provided at one end of the connecting pipe 2 close to the battery cluster 9 , that is, the first sensor 601 is adjacent to the battery cluster 9 . By arranging the first sensor 601 at a position adjacent to the battery cluster 9 , the distance between the first sensor 601 and the battery cluster 9 can be shortened, the detection delay is reduced, and the response speed is accelerated.

This embodiment also provides an energy storage device, which includes multiple battery clusters 9 and the battery fire-fighting system in any of the above embodiments. The battery clusters 9 are connected to the connecting pipe 2 of the battery fire-fighting system. Since the battery fire protection system can simultaneously detect the status of each battery cluster 9, the detection time will not increase as the number of clusters increases, the delay is short, and the fire extinguishing speed is fast. Therefore, the energy storage equipment containing the battery fire protection system has a high safety factor. .

In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description. and simplify operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to differentiate in description and have no special meaning.

In the description of this specification, reference to the terms "an embodiment", "example", etc. means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present invention or in the example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

In addition, it should be understood that although this specification is described in terms of implementations, not each implementation only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be construed as limiting the scope of the present invention in any way. Based on the explanations here, those skilled in the art can think of other specific embodiments of the present invention without any creative effort, and these methods will all fall within the protection scope of the present invention.

Claims (10)

1. A battery fire protection system, characterized in that it includes a fire extinguishing agent storage chamber, a collection pipe and a plurality of connecting pipes, one end of the plurality of connecting pipes is connected to the collecting pipe, and the other end is used to communicate with the battery cluster, A first solenoid valve and a first sensor are provided on the connecting pipe, the collecting pipe is connected to the fire extinguishing agent storage chamber, and a second solenoid valve is provided between the collecting pipe and the fire extinguishing agent storage chamber. The first solenoid valve, the second solenoid valve and the first sensor are electrically connected, the first solenoid valve is a normally open solenoid valve, and the second solenoid valve is a normally closed solenoid valve, When the first sensor alarms, the corresponding first solenoid valve remains open, the remaining first solenoid valves are closed, and the second solenoid valve is opened. 2. The battery firefighting system according to claim 1, characterized by comprising a vacuum tube and a vacuum pump, and both ends of the vacuum tube are connected to the collecting pipe and the vacuum pump respectively. 3. The battery fire-fighting system according to claim 2, wherein the connection position between the vacuum tube and the collecting pipe is located in the middle of the collecting pipe. 4. The battery firefighting system according to claim 2, wherein a second sensor is provided on the vacuum tube, the first solenoid valve, the second solenoid valve, the first sensor and the third The two sensors are electrically connected. 5. The battery fire-fighting system according to claim 2, wherein a third solenoid valve is provided on the vacuum tube, and the first solenoid valve, the second solenoid valve, the third solenoid valve and all The first sensors are electrically connected, and the third solenoid valve is a normally open solenoid valve. 6. The battery firefighting system according to claim 1, wherein the fire extinguishing agent storage chamber includes an independent first chamber and a second chamber, corresponding to the first chamber and the second chamber. Both are provided with the second solenoid valve, the first chamber is used to store fire extinguishing inhibitor, and the second chamber is used to store water-based fire extinguishing agent. 7. The battery fire-fighting system according to claim 6, wherein the first chamber and the second chamber are respectively located at both ends of the collecting pipe and connected with both ends of the collecting pipe. Connected. 8. The battery fire protection system according to any one of claims 1 to 7, characterized in that the first sensor at least includes an explosion-proof combustible gas detection module, a temperature detection module, a humidity detection module, a smoke detection module and a CO detection module. one of them. 9. The battery fire protection system according to any one of claims 1 to 7, characterized in that the first sensor is provided at one end of the connecting pipe close to the battery cluster. 10. An energy storage device, including a plurality of battery clusters, characterized in that it also includes the battery fire-fighting system according to any one of claims 1 to 9, and the battery clusters are connected to the connecting pipe of the battery fire-fighting system.