Fire protection device for electrochemical energy storage battery

Abstract

The utility model relates to the technical field of fire protection devices, and particularly discloses an electrochemical energy storage battery fire protection device which comprises a main body arranged in a battery pack and communicated with a pipeline; the temperature sensing glass ball is used for blocking the pipeline and can be broken along with temperature rise; the electric heating element is arranged in the temperature sensing glass ball and is connected with a power supply; the detector is arranged in the battery pack and is used for detecting the temperature in the battery pack; and the control part is electrically connected with the electric heating element and the detector. According to the utility model, the temperature-sensing glass ball can be actively broken through heating of the resistance wire, and the temperature-sensing glass ball can be automatically broken along with temperature rise in the battery pack; installation and use of an electromagnetic valve in the fire extinguishing system can be avoided, the fire extinguishing system has two different starting modes, no matter whether a circuit in the fire extinguishing system fails or not, the fire extinguishing system can be started to conduct fire extinguishing operation on the battery pack, the fire behavior can be restrained in time, and property loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection devices, in particular to an electrochemical energy storage battery fire protection device. Background Art

[0002] At present, the installation of the fire protection system of the electrochemical energy storage cabin requires installing several nozzles in each battery pack and connecting them to the pressure tank containing the fire extinguishing agent through pipes. When a battery overheats and runs away from control, the fire extinguishing agent can be accurately sprayed into the corresponding battery pack. This not only effectively utilizes the fire extinguishing agent and avoids waste, but also ensures that the fire extinguishing agent will not affect other intact batteries, thereby reducing losses.

[0003] In order to achieve the above effects, not only is it necessary to install a detector in each battery pack to monitor thermal runaway in the battery pack, but it is also necessary to add a valve between each nozzle and the pipeline to control the on and off of the pipeline.

[0004] In such an installation, in the prior art, solenoid valves are often used to control the on-off of the pipeline. However, after a fire occurs, it is very easy to cause a circuit break in the fire protection system, hindering the transmission of electrical signals to the solenoid valve. Relying solely on electrical signals to transmit fire signals is not safe and cannot suppress the fire in time. Utility Model Content

[0005] In view of the above problems, the utility model provides an electrochemical energy storage battery fire protection device, the purpose of which is to avoid the installation and use of solenoid valves in the fire protection system and ensure that the fire protection system can be started normally.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0007] Provided is an electrochemical energy storage battery fire protection device comprising: a main body, which is arranged in a battery pack and connected to a pipeline; a temperature-sensitive glass ball, which is used to block the pipeline and can break as the temperature rises; an electric heating element, which is arranged in the temperature-sensitive glass ball and connected to a power source; a detector, which is arranged in the battery pack and is used to detect the temperature in the battery pack; and a control component, which is electrically connected to the electric heating element and the detector.

[0008] Furthermore, the electric heating element is made of a resistance wire, and the resistance wire is distributed in a plurality of circles along the axial direction of the temperature-sensitive glass ball.

[0009] Furthermore, the device also includes: a seat body, which is arranged on the main body; a valve core, which is arranged between the seat body and the main body, one end of the temperature-sensitive glass ball abuts the seat body, and the other end of the temperature-sensitive glass ball abuts the valve core to block the pipeline; a spring, which is arranged between the valve core and the seat body.

[0010] Furthermore, the device also includes: a sealing plug, which is arranged between the temperature-sensitive glass ball and the valve core and is used to seal the valve core; and an O-ring, which is arranged on the sealing plug and the valve core.

[0011] Furthermore, the device also includes: a flange, which is detachably mounted on the main body; an annular channel, which is opened on the flange and the seat; and a plurality of balls, which are rollably arranged in the annular channel and are located between the flange and the seat.

[0012] Furthermore, the device also includes: a mounting channel, which is opened on the flange and connected to the annular channel; a screw plug, which is arranged in the mounting channel through a threaded connection and is used to seal the ball.

[0013] Furthermore, the device also includes a plurality of functional strips, which are arranged on the base body in a circular array with the central axis of the base body as the center of the circle, and a curved surface for the fire extinguishing agent to impact is arranged on the functional strips.

[0014] The beneficial effects of the utility model are as follows: in the utility model, the temperature-sensitive glass ball has two ways of breaking. It can actively break the temperature-sensitive glass ball by heating with a resistance wire and spray the fire extinguishing agent into the battery pack; it can also break itself as the temperature in the battery pack rises and spray the fire extinguishing agent into the battery pack. The installation and use of the solenoid valve in the fire protection system can be avoided. The fire protection system has two different starting methods. Regardless of whether the circuit in the fire protection system fails, the fire protection system can be started to perform fire extinguishing operations on the battery pack, which can suppress the fire in time and reduce property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of the fire protection device provided in an embodiment of the present application.

[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A.

[0017] Figure 3 This is a schematic diagram of the internal disassembly of the main body and the base provided in an embodiment of the present application.

[0018] Figure 4 for Figure 3 A partial enlarged schematic diagram of part B.

[0019] Figure 5 A cross-sectional view of a functional strip provided in an embodiment of the present application installed on a base.

[0020] Among them, 1. main body; 2. temperature-sensitive glass ball; 21. electric heating element; 3. detector; 4. control component; 5. seat body; 51. valve core; 511. conical surface; 512. feeding channel; 52. spring; 53. sealing plug; 54. O-ring; 61. flange; 62. annular channel; 63. ball; 64. screw plug; 65. function strip; 7. battery pack; 8. pressure storage tank. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1 and Figure 2 As shown, the embodiment of the present application discloses an electrochemical energy storage battery fire protection device including: a main body 1, which is arranged in the battery pack 7 and connected to the pipeline; a temperature-sensitive glass ball 2, which is used to block the pipeline and can be broken as the temperature rises; an electric heating element 21, which is arranged in the temperature-sensitive glass ball 2 and connected to a power source; a detector 3, which is arranged in the battery pack 7 and is used to detect the temperature in the battery pack 7; and a control component 4, which is electrically connected to the electric heating element 21 and the detector 3.

[0023] In specific use, a main body 1 and a detector 3 are respectively arranged in a plurality of battery packs 7 . The main body 1 is connected to a pressure storage tank 8 through a pipeline. The pressure storage tank 8 stores a fire extinguishing agent under pressure.

[0024] On the one hand, when the battery pack 7 is heated to the rated temperature of the detector 3, the detector 3 transmits an electrical signal to the control component 4, and the control component 4 transmits an electrical signal to start the electric heating element 21, heating the electric heating element 21 until the temperature-sensitive glass ball 2 breaks and the pressure storage tank 8 releases pressure to release the fire extinguishing agent into the heated battery pack 7.

[0025] On the other hand, when a fire occurs in some battery packs 7 causing a circuit break in the fire protection system, and the temperature in other battery packs 7 rises, when the temperature in the battery packs 7 rises above the temperature at which the temperature-sensitive glass ball 2 breaks, the temperature-sensitive glass ball 2 will still break, connecting the main body 1 and the pressure storage tank 8, allowing the pressure storage tank 8 to release the fire extinguishing agent.

[0026] In the utility model, the temperature-sensitive glass ball 2 has two rupture modes. When the circuit in the fire-fighting system is effective, the temperature-sensitive glass ball 2 can be actively shattered by heating with a resistance wire, and a fire-extinguishing agent can be sprayed into the battery pack 7 at the initial stage of the battery pack 7 heating up; when the circuit of the fire-fighting system fails, the temperature-sensitive glass ball 2 can be shattered automatically as the temperature in the battery pack 7 rises, and a fire-extinguishing agent can be sprayed into the battery pack 7.

[0027] By using the utility model, the installation and use of the electromagnetic valve in the fire protection system can be avoided. The fire protection system has two different starting modes. Regardless of whether the circuit in the fire protection system fails, the fire protection system can be started to perform fire extinguishing operations on the battery pack 7, which can suppress the fire in time and reduce property losses.

[0028] It is worth mentioning that the control component 4 can be an MCU controller or a CPU controller.

[0029] Specifically, the electric heating element 21 is made of a resistance wire, and the resistance wire has a plurality of circles distributed along the axial direction of the temperature-sensitive glass ball 2 .

[0030] In the utility model, a resistance wire is arranged in a temperature-sensitive glass ball 2 (such as a Kubo glass ball), and a cavity for storing an expansion liquid is wrapped by several turns of the resistance wire. The resistance wire can quickly heat up the expansion liquid, causing the temperature-sensitive glass ball 2 to break, thereby ensuring the response efficiency of the fire protection system.

[0031] Reference Figure 3 As shown, the device also includes: a seat body 5, which is arranged on the main body 1; a valve core 51, which is arranged between the seat body 5 and the main body 1, one end of the temperature-sensitive glass ball 2 abuts the seat body 5, and the other end of the temperature-sensitive glass ball 2 abuts the valve core 51 to block the pipeline; a spring 52, which is arranged between the valve core 51 and the seat body 5.

[0032] In this embodiment, a conical surface 511 is provided on the valve core 51 along the circumferential direction, the conical surface 511 and the main body 1 are installed in a close fit, and a feeding channel 512 is provided in the valve core 51, one end of the feeding channel 512 is on the conical surface 511 and the other end faces the seat body 5.

[0033] Before the temperature-sensitive glass ball 2 breaks, the valve core 51 is supported by the temperature-sensitive glass ball 2, the conical surface 511 and the main body 1 are installed in a close fit, and the feeding channel 512 is blocked; after the temperature-sensitive glass ball 2 breaks, the pressure storage tank 8 releases pressure to impact the valve core 51, and squeezes the spring 52, squeezing a certain gap between the conical surface 511 and the main body 1, so that the fire extinguishing agent can pass through the feeding channel 512 and be sprayed into the battery pack 7, which can effectively prevent the fire extinguishing agent from flowing back.

[0034] Specifically, the device also includes: a sealing plug 53, which is arranged between the temperature-sensitive glass ball 2 and the valve core 51 and is used to seal the valve core 51; an O-ring 54, which is arranged on the sealing plug 53 and the valve core 51; by arranging the O-ring 54 on the sealing plug 53 and the valve core 51, the sealing performance can be effectively improved to prevent the fire extinguishing agent from leaking and affecting the normal operation of the battery pack 7.

[0035] Specifically, the device also includes: a flange 61, which is detachably mounted on the main body 1; an annular channel 62, which is opened on the flange 61 and the seat 5; a plurality of balls 63, which are rollably arranged in the annular channel 62, between the flange 61 and the seat 5; the device also includes a plurality of functional strips 65, which are arranged on the seat 5 along a circumferential array with the central axis of the seat 5 as the center of the circle, and a curved surface for the fire extinguishing agent to impact is provided on the functional strips 65.

[0036] It is worth mentioning that the flange 61 can be detachably mounted on the main body 1 by bolts.

[0037] Reference Figure 3 and Figure 5 As shown, after the temperature-sensitive glass ball 2 is broken, the pressure storage tank 8 releases pressure, and the fire extinguishing agent passes through the main body 1 and rushes to the bottom surface of the seat body 5, and is scattered by the bottom surface of the seat body 5, and impacts the curved surface on the functional strip 65 along the radial direction of the seat body 5, pushing the seat body 5 along the circumferential direction, which can cause the seat body 5 to rotate, so as to further disperse the fire extinguishing agent along the circumferential direction of the seat body 5, thereby increasing the coverage area of ​​the fire extinguishing agent and improving the fire extinguishing efficiency.

[0038] Reference Figure 4 As shown, the device also includes: an installation channel, which is opened on the flange 61 and connected to the annular channel 62; a screw plug 64, which is arranged in the installation channel through a threaded connection and is used to block the ball 63; the staff can open the installation channel by twisting the screw plug 64, which is convenient for the staff to replace the ball 63 and ensure that the seat body 5 can rotate normally.

[0039] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may 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 equivalent technology of the claims of the present invention, the present invention is also intended to include these modifications and variations.

Claims

1. An electrochemical energy storage battery fire protection device, characterized in that: include: A main body (1) is arranged in the battery pack (7) and is connected to the pipeline; A temperature-sensitive glass ball (2) is used to block the pipeline and can break as the temperature rises; An electric heating element (21) is disposed in the temperature-sensitive glass ball (2) and connected to a power source; A detector (3) is arranged in the battery pack (7) and is used to detect the temperature in the battery pack (7); The control component (4) is electrically connected to the electric heating element (21) and the detector (3).

2. The electrochemical energy storage battery fire protection device according to claim 1, characterized in that: The electric heating element (21) is made of a resistance wire, and the resistance wire has a plurality of circles distributed along the axial direction of the temperature-sensitive glass ball (2).

3. The electrochemical energy storage battery fire protection device according to claim 1, characterized in that: Also includes: A seat (5) is arranged on the main body (1); The valve core (51) is arranged between the seat body (5) and the main body (1), one end of the temperature-sensitive glass ball (2) abuts against the seat body (5), and the other end of the temperature-sensitive glass ball (2) abuts against the valve core (51) to block the pipeline; The spring (52) is arranged between the valve core (51) and the seat body (5).

4. The electrochemical energy storage battery fire protection device according to claim 3, characterized in that: Also includes: A sealing plug (53) is disposed between the temperature-sensitive glass ball (2) and the valve core (51) and is used to seal the valve core (51); The O-ring (54) is arranged on the sealing plug (53) and the valve core (51).

5. The electrochemical energy storage battery fire protection device according to claim 3, characterized in that: Also includes: A flange (61) is detachably mounted on the main body (1); An annular channel (62) is formed on the flange (61) and the seat (5); A plurality of balls (63) are rollably arranged in the annular channel (62) and are located between the flange (61) and the seat body (5).

6. The electrochemical energy storage battery fire protection device according to claim 5, characterized in that: Also includes: A mounting channel is provided on the flange (61) and communicates with the annular channel (62); The screw plug (64) is arranged in the installation channel through a threaded connection and is used to block the ball (63).

7. The electrochemical energy storage battery fire protection device according to claim 5, characterized in that: It also comprises a plurality of functional strips (65) which are arranged on the base body (5) in a circular array with the central axis of the base body (5) as the center of the circle, and a curved surface for the fire extinguishing agent to impact is arranged on the functional strips (65).

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