A lithium battery test automatic fire extinguishing device

Abstract

The utility model discloses an automatic fire extinguishing device for lithium battery testing, which relates to the technical field of lithium battery testing safety protection. The automatic fire extinguishing device for lithium battery testing comprises a spray recovery box, a water storage device and a temperature-sensitive spray head; the spray recovery box comprises a test chamber with an opening, and the test chamber is a test site for lithium batteries; the temperature-sensitive spray head is arranged above the opening of the test chamber; the water storage device is connected to the temperature-sensitive spray head and is used to supply water to the temperature-sensitive spray head, so that when the lithium battery in the test chamber catches fire, the temperature-sensitive spray head located above the opening of the test chamber will be triggered to spray fire extinguishing liquid, such as water or a water-based anti-low temperature fire extinguishing agent, into the test chamber, so as to extinguish the fire in time, avoid the fire from spreading, and reduce losses; at the same time, the spray recovery box can recover the fire extinguishing liquid, soak the ignited battery, further reduce the battery reaction temperature, and avoid the fire extinguishing liquid from spreading and polluting the environment and causing other losses such as short circuit of the test equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery test safety protection, in particular to an automatic fire extinguishing device for lithium battery test. Background Art

[0002] When conducting reliability tests on consumer lithium batteries, there is a risk of lithium batteries catching fire during the test due to the harsh testing conditions. A burning lithium battery will cause a large amount of smoke and irritating odor, and there is also a risk of causing other fires.

[0003] In the prior art, the test lithium battery is directly placed in an explosion-proof cabinet, or directly placed inside the test equipment for testing. If the lithium battery catches fire during the test, the lithium battery will continue to burn, or the fire will be put out manually with a fire extinguisher, affecting the equipment circuit, and a large amount of irritating odor and smoke will be generated to affect the environment. Although the explosion-proof cabinet can prevent the spread of fire, it cannot automatically extinguish the fire. The battery inside the test equipment may catch fire, causing damage to the circuit of the test equipment, posing a major safety hazard. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the utility model is how to automatically extinguish the fire when a lithium battery catches fire during testing, thereby improving safety.

[0005] In order to solve the above problems, an embodiment of the utility model proposes an automatic fire extinguishing device for testing lithium battery, comprising a spray recovery box, a water storage device and a temperature-sensitive spray head; the spray recovery box comprises a test chamber with an opening, and the test chamber is a testing place for lithium batteries; the temperature-sensitive spray head is arranged above the opening of the test chamber; the water storage device is connected to the temperature-sensitive spray head for supplying water to the temperature-sensitive spray head.

[0006] A further technical solution is that the lithium battery test automatic fire extinguishing device also includes a bracket, and the water storage device and the spray recovery box are arranged on the bracket at intervals from top to bottom.

[0007] Its further technical solution is that the water storage device includes a water storage bag and a water bag tray, the water bag tray is arranged on the bracket, the water bag tray is arranged at intervals on the upper side of the spray recovery box, the water storage bag is arranged in the water bag tray, and the water storage bag is used to store fire extinguishing liquid.

[0008] A further technical solution is that the water storage device also includes a water outlet pipe, the water bag tray is provided with a pipeline outlet, the temperature-sensitive spray head is arranged on the bottom side of the water bag tray, one end of the water outlet pipe is connected to the water storage bag, and the other end of the water outlet pipe passes through the pipeline outlet and extends to the bottom side of the water bag tray and is connected to the temperature-sensitive spray head; or the temperature-sensitive spray head passes through the bottom side of the water bag tray and is installed to the bottom of the water storage bag.

[0009] A further technical solution is that there are multiple temperature-sensitive spray heads, and the multiple temperature-sensitive spray heads are evenly distributed on the bottom side of the water bag tray.

[0010] A further technical solution is that there are multiple water outlet pipes, and the multiple water outlet pipes are respectively connected to multiple temperature-sensitive sprinkler heads; or there is only one water outlet pipe, and multiple temperature-sensitive sprinkler heads are all connected to the water outlet pipe.

[0011] A further technical solution is that the lithium battery test automatic fire extinguishing device also includes a pressure plate, and the pressure plate is arranged on the upper side of the water storage bag, and the material of the water storage bag is a flexible material.

[0012] A further technical solution is that the pressing plate includes a main body and a handle, and the handle is arranged on the main body.

[0013] Its further technical solution is that the bracket includes at least two supporting columns, and the two supporting columns are arranged at an interval; the two sides of the spray recovery box are respectively connected to the two supporting columns; the two sides of the water bag tray are respectively connected to the two supporting columns.

[0014] A further technical solution is that the lithium battery test automatic fire extinguishing device also includes an upper fence, both sides of the upper fence are respectively connected to the two support columns, and the upper fence surrounds the pressure plate.

[0015] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0016] According to the technical solution of the utility model, the automatic fire extinguishing device for testing lithium battery comprises a spray recovery box, a water storage device and a temperature-sensitive spray head; the spray recovery box comprises a test chamber with an opening, and the test chamber is a test place for lithium battery; the temperature-sensitive spray head is arranged above the opening of the test chamber; the water storage device is connected to the temperature-sensitive spray head, and is used to supply water to the temperature-sensitive spray head, so that when the lithium battery in the test chamber catches fire, the temperature-sensitive spray head located above the opening of the test chamber will be triggered to spray fire extinguishing liquid, such as water or water-based anti-low temperature fire extinguishing agent, into the test chamber, so as to extinguish the fire in time, avoid the spread of fire and reduce losses; the spray recovery box can also recover the fire extinguishing liquid, soak the ignited battery, further reduce the battery reaction temperature, and avoid the fire extinguishing liquid from spreading and polluting the environment and causing other losses such as short circuit of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 A schematic diagram of the structure of a lithium battery test automatic fire extinguishing device proposed in an embodiment of the utility model;

[0021] Figure 2 Another structural schematic diagram of a lithium battery test automatic fire extinguishing device proposed in an embodiment of the utility model;

[0022] Figure 3 Another structural schematic diagram of a lithium battery test automatic fire extinguishing device proposed in an embodiment of the utility model;

[0023] Figure 4 This is a structural schematic diagram of a lithium battery test automatic fire extinguishing device proposed in another embodiment of the utility model;

[0024] Figure 5 This is a schematic structural diagram of a lithium battery proposed in an embodiment of the utility model.

[0025] Reference numerals

[0026] Spray recovery box 10, test chamber 11, water storage device 20, temperature sensing spray head 30, bracket 40, water storage bag 21, water bag tray 22, water outlet pipe 23, pipeline outlet 221, pressure plate 50, main body 51, handle 52, support column 41, upper fence 60, lithium battery 70. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments to be described below are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0029] It should also be understood that the terms used in this utility model embodiment specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model embodiments. As used in the utility model embodiment specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0030] See also Figure 1-4 The embodiment of the utility model proposes an automatic fire extinguishing device for lithium battery testing, which is used for safety protection of lithium battery testing. When a fire occurs during lithium battery testing, the device can automatically spray fire extinguishing liquid to extinguish the fire, thereby improving the safety of lithium battery testing. In order to achieve the above technical effects, the automatic fire extinguishing device for lithium battery testing includes a spray recovery box 10, a water storage device 20 and a temperature-sensitive spray head 30. The specific structure is described as follows:

[0031] The spray recovery box 10 includes a test chamber 11 with an opening, and the test chamber 11 is a testing place for lithium batteries; that is, the test of lithium batteries is carried out in the test chamber 11, and the side wall of the test chamber 11 is a sealed structure and can store water.

[0032] The temperature-sensing sprinkler head 30 is disposed above the opening of the test chamber 11; when the temperature-sensing sprinkler head 30 detects that the temperature is higher than a set threshold, that is, when a lithium battery test fire occurs, it will automatically spray water into the test chamber 11 to extinguish the fire, thereby preventing the fire from spreading and improving the safety of the test.

[0033] The water storage device 20 is connected to the temperature-sensitive sprinkler head 30 and is used to supply water to the temperature-sensitive sprinkler head 30 to ensure that the temperature-sensitive sprinkler head 30 has enough water to extinguish the fire. The water storage device 20 can be specifically a water storage tank, and the temperature-sensitive sprinkler head 30 is directly installed at the bottom of the water storage tank. The water storage device 20 is used to store fire extinguishing liquid, such as water or a water-based fire extinguishing agent that resists low temperatures.

[0034] According to the technical solution of the utility model, the automatic fire extinguishing device for testing lithium battery comprises a spray recovery box 10, a water storage device 20 and a temperature-sensitive spray head 30; the spray recovery box 10 comprises a test chamber 11 with an opening, and the test chamber 11 is a test place for lithium battery; the temperature-sensitive spray head 30 is arranged above the opening of the test chamber 11; the water storage device 20 is connected to the temperature-sensitive spray head 30, and is used to supply water to the temperature-sensitive spray head 30, so that when the lithium battery in the test chamber 11 catches fire, the temperature-sensitive spray head 30 located above the opening of the test chamber 11 will be triggered to spray fire extinguishing liquid, such as water or water-based anti-low temperature fire extinguishing agent, into the test chamber 11, so as to extinguish the fire in time, avoid the fire from spreading, and reduce losses; at the same time, the spray recovery box 10 can also recover the fire extinguishing liquid, soak the ignited battery, further reduce the battery reaction temperature, and avoid the fire extinguishing liquid from spreading and polluting the environment and causing other losses such as short circuit of the test equipment.

[0035] Further, see Figure 1-4 In the embodiment of the utility model, the lithium battery test automatic fire extinguishing device further comprises a bracket 40, and the water storage device 20 and the spray recovery box 10 are arranged on the bracket 40 from top to bottom. The bracket 40 supports the main body 51, ensuring the reliable installation of the water storage device 20 and the spray recovery box 10.

[0036] Furthermore, the water storage device 20 includes a water storage bag 21 and a water bag tray 22, wherein the water bag tray 22 is disposed on the bracket 40, and the water bag tray 22 is spaced apart on the upper side of the spray recovery box 10, and the water storage bag 21 is disposed in the water bag tray 22. The water bag tray 22 is a carrier of the water storage bag 21. Since the water storage bag 21 is usually made of a flexible material (such as plastic), the water bag tray 22 can provide good support for the water storage bag 21. The water storage bag 21 is a sealed bag body, and a water filling port that can be sealed and closed is provided on the water storage bag 21, and the water storage bag 21 can be reused. The water storage bag is used to store fire extinguishing liquid, such as water or a water-based anti-low temperature fire extinguishing agent.

[0037] Furthermore, the temperature-sensitive shower head 30 can be directly installed to the bottom of the water storage bag 21 through the bottom side of the water bag tray 22, and the water storage bag 21 directly supplies water to the temperature-sensitive shower head 30. The bottom side of the water bag tray 22 is provided with a hole for the temperature-sensitive shower head 30 to pass through. The bottom of the water storage bag 21 is provided with an interface connected to the temperature-sensitive shower head 30.

[0038] Furthermore, the number of the temperature-sensitive sprinkler heads 30 is multiple, and the multiple temperature-sensitive sprinkler heads 30 are evenly distributed on the bottom side of the water bag tray 22. By providing multiple temperature-sensitive sprinkler heads 30 evenly distributed on the bottom side of the water bag tray 22, the reliability of fire extinguishing can be improved. At the same time, the multiple temperature-sensitive sprinkler heads 30 can have specifications of multiple temperature ranges to take into account the sensitivity of the temperature-sensitive sprinkler heads 30 and the required temperature of the experiment, and the temperature-sensitive sprinkler heads 30 can detonate and flow water quickly after reaching the temperature, which is stable and reliable.

[0039] Further, see Figure 4 The water storage device 20 further includes a water outlet pipe 23, the water bag tray 22 is provided with a pipeline outlet 221, the temperature-sensitive spray head 30 is provided at the bottom side of the water bag tray 22, one end of the water outlet pipe 23 is connected to the water storage bag 21, and the other end of the water outlet pipe 23 passes through the pipeline outlet 221 and extends to the bottom side of the water bag tray 22 and is connected to the temperature-sensitive spray head 30. The water outlet pipe 23 is used to transport the water in the water storage bag 21 to the temperature-sensitive spray head 30, which can be transported by gravity of water or by a fluid power device (e.g., a pump), which is not specifically limited in the present utility model.

[0040] The number of the water outlet pipe 23 is one, and the plurality of temperature-sensitive spray heads 30 are all connected to the water outlet pipe 23. Thus, the plurality of temperature-sensitive spray heads 30 can be connected through one water outlet pipe 23, thereby reducing the cost.

[0041] Or in some other embodiments, there are multiple water outlet pipes 23, and the multiple water outlet pipes 23 are respectively connected to the multiple temperature-sensitive sprinkler heads 30, thereby avoiding fire extinguishing failure due to failure (blockage) of the water outlet pipe 23 when there is only one water outlet pipe 23.

[0042] Furthermore, the lithium battery test automatic fire extinguishing device also includes a pressure plate 50, which is arranged on the upper side of the water storage bag 21, and the material of the water storage bag 21 is a flexible material. The pressure plate 50 is made of a heavier material, such as metal. The pressure plate 50 can be used to apply pressure to the water storage bag 21. At the same time, the water storage bag 21 is made of a flexible material. Under the action of the pressure plate 50, the water pressure can be increased, thereby increasing the water spray volume of the temperature-sensitive sprinkler head 30, thereby improving the reliability of fire extinguishing.

[0043] Furthermore, the pressing plate 50 includes a main body 51 and a handle 52, and the handle 52 is disposed on the main body 51. The main body 51 is in a flat plate shape, so that it can be evenly pressed on the water storage bag 21. The handle 52 is disposed on the upper side of the main body 51 to facilitate taking and placing the pressing plate 50.

[0044] Further, the bracket 40 includes at least two support columns 41, and the two support columns 41 are arranged at intervals; the two sides of the spray recovery box 10 are respectively connected to the two support columns 41; the two sides of the water bag tray 22 are respectively connected to the two support columns 41. For example, in this embodiment, the bracket 40 includes four support columns 41, and the four support columns 41 form a rectangle. The water bag tray 22 and the spray recovery box 10 are both arranged on the four support columns 41, for example, fixed by fasteners or welding, which is not specifically limited in the utility model.

[0045] Furthermore, the lithium battery test automatic fire extinguishing device also includes an upper fence 60, the two sides of the upper fence 60 are respectively connected to the two support columns 41, and the upper fence 60 surrounds the pressing plate 50. The upper fence 60 can play a good protective role for the pressing plate 50 to prevent the pressing plate 50 from falling. For example, in this embodiment, the bracket 40 includes four support columns 41, and the four support columns 41 form a rectangle. The upper fence 60 is arranged on the four support columns 41, for example, fixed by fasteners or welding, which is not specifically limited in the utility model.

[0046] The utility model has the following technical effects

[0047] 1. Since lithium batteries often catch fire during testing, there are certain safety hazards. Fires are mainly caused by violent reactions inside thermal runaway lithium batteries. A more effective way to extinguish fires is to use water to cool them down.

[0048] 2. The utility model can use water to extinguish the fire in the lithium battery test in a small space, thereby avoiding the expansion of losses.

[0049] 3. In the utility model, there is no pressure injected into the water storage bag 21, and the pressure of the water in the water storage bag 21 comes from gravity. The sealed water storage bag 21 is maintenance-free, and the water does not volatilize or leak, and does not require addition, and does not pollute the environment and test equipment.

[0050] 4. The multiple temperature-sensitive sprinkler heads 30 of the present invention can have specifications of various temperature ranges to take into account the sensitivity of the temperature-sensitive sprinkler heads 30 and the required temperature of the experiment, and the temperature-sensitive sprinkler heads 30 can detonate and flow water quickly, stably and reliably after reaching the temperature.

[0051] 5. The utility model has a simple structure, is easy to assemble, low cost and maintenance-free.

[0052] 6. In the utility model, the amount of water used for fire extinguishing is constant, and the water is finally collected in the spray recovery box 10 (the volume of the spray recovery box 10 is larger than the volume of the water storage bag 21), without overflowing, causing secondary pollution and damage to the test equipment, thus avoiding accidents such as electric leakage caused by water leakage.

[0053] See also Figure 5 , Figure 5 The structure of a lithium battery 70 to be tested in the present invention is shown.

[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0060] 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 equivalents, the present invention is intended to include these modifications and variations.

[0061] The above is a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A lithium battery test automatic fire extinguishing device, characterized in that: It includes a spray recovery box, a water storage device and a temperature-sensitive spray head; the spray recovery box includes a test chamber with an opening, and the test chamber is a test site for lithium batteries; the temperature-sensitive spray head is arranged above the opening of the test chamber; the water storage device is connected to the temperature-sensitive spray head and is used to supply water to the temperature-sensitive spray head; Wherein, the lithium battery test automatic fire extinguishing device also includes a bracket, and the water storage device and the spray recovery box are arranged on the bracket from top to bottom; The water storage device includes a water storage bag and a water bag tray. The water bag tray is arranged on the bracket. The water bag tray is arranged at intervals on the upper side of the spray recovery box. The water storage bag is arranged in the water bag tray. The water storage bag is used to store fire extinguishing liquid.

2. The automatic fire extinguishing device for lithium battery testing according to claim 1, characterized in that: The water storage device also includes a water outlet pipe, the water bag tray is provided with a pipeline outlet, the temperature-sensitive spray head is arranged on the bottom side of the water bag tray, one end of the water outlet pipe is connected to the water storage bag, and the other end of the water outlet pipe passes through the pipeline outlet and extends to the bottom side of the water bag tray and is connected to the temperature-sensitive spray head; or the temperature-sensitive spray head passes through the bottom side of the water bag tray and is installed to the bottom of the water storage bag.

3. The lithium battery test automatic fire extinguishing device according to claim 2, characterized in that: There are multiple temperature-sensitive spray heads, and the multiple temperature-sensitive spray heads are evenly distributed on the bottom side of the water bag tray.

4. The automatic fire extinguishing device for lithium battery testing according to claim 3, characterized in that: There are multiple water outlet pipes, and the multiple water outlet pipes are respectively connected to the multiple temperature-sensitive sprinkler heads; or there is one water outlet pipe, and the multiple temperature-sensitive sprinkler heads are all connected to the water outlet pipe.

5. The lithium battery test automatic fire extinguishing device according to claim 1, characterized in that: The lithium battery test automatic fire extinguishing device also includes a pressure plate, which is arranged on the upper side of the water storage bag, and the material of the water storage bag is a flexible material.

6. The automatic fire extinguishing device for lithium battery testing according to claim 5 is characterized in that: The pressing plate includes a main body and a handle, and the handle is arranged on the main body.

7. The automatic fire extinguishing device for lithium battery testing according to claim 6, characterized in that: The bracket includes at least two supporting columns, and the two supporting columns are arranged at an interval; the two sides of the spray recovery box are respectively connected to the two supporting columns; the two sides of the water bag tray are respectively connected to the two supporting columns.

8. The lithium battery test automatic fire extinguishing device according to claim 7, characterized in that: The lithium battery testing automatic fire extinguishing device also includes an upper fence, two sides of which are respectively connected to the two supporting columns, and the upper fence surrounds the pressing plate.

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