Fire extinguishing protection device for lithium battery thermal runaway test

Abstract

The utility model discloses a fire extinguishing protection device for a lithium battery thermal runaway test. The battery safety test device comprises a test box, and a box door is rotationally connected to the test box; the test box is rotationally connected with two test plates, the two test plates are oppositely arranged, and the rotating axes of the two test plates are arranged in the horizontal direction; when the two test plates are horizontal, the two test plates are spliced to form a test platform; the test box is provided with a water tank below the test platform; a driving assembly for driving the test platform to rotate is also arranged in the test box; the water tank is arranged in the cabinet body, so that the purpose of quickly extinguishing fire is achieved. Meanwhile, opening and closing of the test platform are achieved through the electromagnet, it is guaranteed that the lithium battery can fall into the water tank after fire breaks out, it is guaranteed that fire extinguishing can be completed after the battery burns, and test safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of battery safety testing, in particular to a fire extinguishing protection device for a lithium battery thermal runaway test. Background Art

[0002] As mining, petrochemical and other industrial explosion-related fields move towards green development, lithium batteries are increasingly used. Thermal runaway tests of lithium batteries are often accompanied by the generation of corrosive liquids and toxic and harmful gases.

[0003] At present, the fire extinguishing device for lithium battery thermal runaway test does not take into account the protection against corrosive liquids and the treatment of toxic and harmful gases. During the test, the corrosive liquids generated by the thermal runaway of the lithium battery will cause damage to the surrounding environment and the device itself, and the toxic and harmful gases will pollute the surrounding environment and cause damage to the health of the test personnel.

[0004] In the past, the lithium battery thermal runaway test fire extinguishing device was open. In order to prevent the splashing of corrosive liquids from affecting surrounding equipment, a very large test space was required. A large test space would make the handling of toxic and harmful gases very time-consuming. Therefore, this design proposes a lithium battery thermal runaway test fire extinguishing protection device. Utility Model Content

[0005] In order to ensure the safety of battery combustion tests, the present application provides a lithium battery thermal runaway test fire extinguishing protection device.

[0006] The present application provides a fire extinguishing protection device for a lithium battery thermal runaway test, which adopts the following technical solution:

[0007] A fire extinguishing protection device for a lithium battery thermal runaway test comprises a test box, a box door being rotatably connected to the test box; two test plates being rotatably connected to the test box, the two test plates being arranged opposite to each other, and the rotation axes of the two test plates being arranged in a horizontal direction; when the two test plates are in a horizontal position, they are spliced ​​to form a test platform; the test box is provided with a water tank below the test platform; and the test box is also provided with a driving assembly for driving the test platform to rotate.

[0008] Furthermore, the driving assembly includes an electromagnet, which is arranged in the test box. The test platform is made of magnetic material. When the test plate is in a horizontal state, the test plate is in contact with the electromagnet.

[0009] Furthermore, an exhaust hole is opened at the top of the test box, and the exhaust hole is connected to a centrifugal fan and an air purification system in sequence through an exhaust pipe.

[0010] Furthermore, a threading hole for inserting a power line is provided on the back of the test box, and a sealing rubber ring is provided at the threading hole.

[0011] Furthermore, an observation window is provided on the box door.

[0012] Furthermore, an observation window is provided on the side of the test box.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. The present invention adds three glass windows on the cabinet, which can better observe the status of the lithium battery at each stage while preventing liquid splashing;

[0015] 2. The present invention sets a water tank in the cabinet to achieve the purpose of rapid fire extinguishing. At the same time, an electromagnet is used to realize the opening and closing of the test platform to ensure that the lithium battery can fall into the water tank after the fire;

[0016] 3. The present invention adds a ventilation duct on the top of the cabinet, uses an air pump to quickly discharge the toxic and harmful gases inside the device, and at the same time sets a gas purification system at the other end of the duct to ensure that the toxic and harmful gases meet the emission standards when discharged into the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall structural diagram of a fire extinguishing protection device for a lithium battery thermal runaway test;

[0018] Figure 2 yes Figure 1 The overall structure diagram of the test chamber.

[0019] Description of reference numerals:

[0020] 1. Test chamber; 11. Chamber door; 12. Observation window; 13. Test board; 14. Electromagnet; 15. Threading hole; 16. Exhaust hole; 17. Rubber sealing ring; 2. Exhaust pipe; 3. Centrifugal fan; 4. Air purification system. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-2 This application is described in further detail.

[0022] The embodiment of the present application discloses a fire extinguishing protection device for a thermal runaway test of a lithium battery, the device comprising a test box 1, to which a box door 11 is rotatably connected, and the rotation axis of the box door 11 is arranged in a vertical direction; two test plates 13 are rotatably connected in the test box 1, and the rotation axes of the two test plates 13 are arranged in a horizontal direction, and the two test plates 13 are arranged opposite to each other; when the two test plates 13 are both in a horizontal state, the two test plates 13 are spliced ​​to form a test platform for placing batteries; a water tank is placed under the test platform; at the same time, a driving component for controlling the rotation of the two test plates 13 to close or open is provided in the test box 1.

[0023] During the experiment, the battery is placed on a test platform for a thermal runaway fire extinguishing test. By changing the voltage and current parameters of the input battery, the battery's tolerance is observed to obtain the critical parameters of battery combustion. When the test is completed, the two test plates 13 are driven to rotate by the driving assembly, so that the burning battery falls into the water tank to complete the fire extinguishing.

[0024] In the embodiment of the present application, the driving component includes an electromagnet 14, which has magnetic metal. When the test plate 13 is in a horizontal state, the magnetic metal abuts against the test plate 13; therefore, when the electromagnet 14 is energized, the test plate 13 is adsorbed by the electromagnet 14, thereby maintaining a horizontal state; when the electromagnet 14 is de-energized, the test plate 13 rotates, and the battery falls into the water tank.

[0025] In order to treat harmful gases generated by battery combustion, an exhaust hole 16 is opened on the top of the test box 1, and the exhaust hole 16 is connected to the centrifugal fan 3 and the air purification system 4 through the exhaust pipe 2; the gas generated by battery combustion is drawn to the air purification system 4 under the action of the centrifugal fan 3 and discharged after the purification treatment is completed.

[0026] In order to facilitate battery experiments and observe the progress of the experiments, a threading hole 15 is provided on the back of the test box 1, and a rubber sealing ring 17 is provided at the threading hole 15; the cable connecting the battery passes through the threading hole 15, and the rubber sealing ring 17 is used to seal the threading hole 15 to ensure that the gas does not escape from the threading hole 15; at the same time, observation windows 12 are provided on the box door 11 and the two side walls of the test box 1 for observing the battery combustion process.

[0027] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire extinguishing protection device for a lithium battery thermal runaway test, characterized in that: The invention comprises a test box (1), wherein a box door (11) is rotatably connected to the test box (1); two test plates (13) are rotatably connected to the test box (1), the two test plates (13) are arranged opposite to each other, and the rotation axes of the two test plates (13) are arranged in a horizontal direction; when the two test plates (13) are in a horizontal position, they are spliced ​​to form a test platform; the test box (1) is provided with a water tank below the test platform; and the test box (1) is also provided with a driving component for driving the test platform to rotate.

2. A lithium battery thermal runaway test fire extinguishing protection device according to claim 1, characterized in that: The driving assembly comprises an electromagnet (14), the electromagnet (14) is arranged in the test box (1), the test platform is made of magnetic material, and when the test plate (13) is in a horizontal state, the test plate (13) is in contact with the electromagnet (14).

3. A lithium battery thermal runaway test fire extinguishing protection device according to claim 2, characterized in that: An exhaust hole (16) is provided at the top of the test box (1), and the exhaust hole (16) is connected to a centrifugal fan (3) and an air purification system (4) in sequence through an exhaust pipe (2).

4. A lithium battery thermal runaway test fire extinguishing protection device according to claim 1, characterized in that: The back of the test box (1) is provided with a threading hole (15) for the power supply line to pass through, and a sealing rubber ring is provided at the threading hole (15).

5. A lithium battery thermal runaway test fire extinguishing protection device according to claim 1, characterized in that: The box door (11) is provided with an observation window (12).

6. A lithium battery thermal runaway test fire extinguishing protection device according to claim 1, characterized in that: An observation window (12) is provided on the side of the test box (1).

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