Fire-fighting device for automobile battery

Abstract

The utility model discloses an automobile battery fire fighting device, and belongs to the technical field of battery fire fighting. Comprising a battery box body, a cavity is formed in the battery box body, a battery cell is fixedly arranged on one face of the cavity, the face adjacent to the face is a side wall, and a temperature sensor and a light sensor are fixedly installed on the side wall; one surface opposite to the battery cell is the top and is provided with a grid line sensor; a grid sensor is arranged on the outer surface of the battery box main body. The sensors can transmit and detect the fire in time, and the situation that when the fire occurs, a control circuit is damaged in advance, and fire extinguishing fails is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery fire fighting, in particular to a car battery fire fighting device. Background Art

[0002] The existing automobile battery fire fighting device is equipped with an automatic fire extinguishing device including multiple battery boxes, a high-pressure liquid storage tank, an air pump and a controller installed on the top of each battery box. The liquid storage tank is filled with a mixture of foam fire extinguishing agent and water in a certain proportion. The upper part of the liquid storage tank is connected to the air pump through an air pipe, and the lower part of the liquid storage tank is connected to each battery box through a pipeline. Each of the battery boxes is equipped with a temperature sensor and / or a smoke detector. However, the existing automobile battery fire fighting device needs to monitor and detect the fire before the fire extinguishing device can be activated to extinguish the fire. It fails to take into account that when a fire occurs, the lithium battery in the new energy vehicle heats up and burns quickly and the temperature is high, which damages the relevant control circuit in advance and causes the fire extinguishing device to fail to start in time.

[0003] After searching, the name of the Chinese utility model invention is: A fire extinguishing device for lithium batteries of new energy vehicles (application number: 202210954849.7, application date: 2022.08.10), including: a device shell, with a secondary fire extinguishing chamber spaced above it, which is filled with a certain volume of water for fire extinguishing in emergency situations; a lithium battery pack, a temperature control power-off device and a primary fire extinguishing device are placed inside the device shell, and the lithium battery pack is fixedly mounted on the inner wall at the bottom of the device shell, and the temperature control power-off device and the primary fire extinguishing device are respectively fixedly mounted on the inner walls of the lower ends of the left and right sides of the device shell; an external interface, fixedly mounted on the outer wall on the left side of the device shell, which is connected to a lithium battery pack for the conduction of its electrical energy, and a power-off alarm is arranged on its upper end, and the power-off alarm is fixedly mounted on the left side of the device shell. This application is provided with a temperature control power-off device. When the temperature inside the device rises, the temperature rise drives the device inside

[0004] As the temperature rises, the gas will expand to a certain volume, thereby pushing its sealed piston, and finally causing the cooling device to spray liquid nitrogen for cooling through transmission, and the liquid nitrogen flow rate of the cooling device is proportional to the temperature inside the device, and when the temperature inside the device reaches a certain level, the temperature control slider will push the internal interface to disconnect from the external interface, thereby achieving power outage. The shortcoming of this application is that it fails to take into account that the lithium batteries in energy vehicles heat up and burn quickly and at high temperatures, which may damage the circuit before the control device takes effect and cause the control to fail, and the control device and the fire extinguishing agent pipeline may also be damaged in the event of a car collision, causing the fire extinguishing device to fail to start in time. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model

[0006] The utility model aims to solve the problem that the control circuit of the existing battery fire fighting device is damaged in advance when a fire occurs.

[0007] 2. Technical solution

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0009] A car battery fire fighting device, characterized in that it includes a battery box body, a cavity is arranged in the battery box body, a battery cell is fixedly arranged on one side of the cavity, and the adjacent side of the cavity is a side wall, and a temperature sensor and a light sensor are fixedly installed on the side wall; a side opposite to the battery cell is a top, and a grid line sensor is arranged; and a grid sensor is arranged on the outer surface of the battery box body.

[0010] Preferably, it also includes a fire extinguishing component instrument panel arranged in the battery box body, and the temperature sensor, the light sensor, the grid line sensor, and the grid sensor are all electrically connected to the fire extinguishing component instrument panel through sensor lines.

[0011] Preferably, the grid line sensor is composed of two groups of sensor lines arranged crosswise in horizontal and vertical directions, and each group of sensor lines of the grid line sensor is composed of a plurality of sensor lines arranged evenly and at equal distances.

[0012] Preferably, a protective film is provided inside the cavity of the battery box body, and the protective film is bonded to the side walls around the battery box body; the grid line sensor is located between the protective film and the top.

[0013] Preferably, two groups of fire extinguishing components are arranged around the battery cell, and the two groups of fire extinguishing components are symmetrically arranged on both sides of the battery cell. The fire extinguishing components include an automatic rotating nozzle 2 and a driving mechanism 2. The automatic rotating nozzle 2 is arranged on the rotating shaft of the driving mechanism 2 and is driven by the driving mechanism 2 to rotate. The spraying angle of the automatic rotating nozzle 2 is set to an elevation angle of 45°. The driving mechanism 2 drives the automatic rotating nozzle 2 to rotate at an angle that is compatible with the direction and distance of the automatic rotating nozzle 2 relative to the battery cell so that the automatic rotating nozzle 2 covers the battery cell within the rotation range; the height of the automatic rotating nozzle 2 is 5 cm higher than the upper surface of the battery cell;

[0014] Preferably, two spraying fire extinguishing assemblies are provided on the outside of the battery box body, and the two spraying fire extinguishing assemblies are diagonally positioned. The spraying fire extinguishing assembly includes an automatic rotating nozzle and a driving mechanism. The automatic rotating nozzle is arranged on the rotating axis of the driving mechanism and is driven to rotate by the driving mechanism. The spraying angle of the automatic rotating nozzle is set to an elevation angle of 45°. The rotation angle of the automatic rotating nozzle driven by the driving mechanism is adapted to the direction and distance of the automatic rotating nozzle relative to the battery box body so that the automatic rotating nozzle covers the battery box body within the rotation range.

[0015] Preferably, fire extinguishing dry powder is filled between the protective film and the surrounding side walls inside the battery box body; fire extinguishing dry powder is filled between the protective film and the top of the battery box body.

[0016] Preferably, a battery base is provided at the bottom where the battery core is located, and the battery box base is fixed to the bottom of the battery box body, and the battery box body wraps the battery core and the fire extinguishing assembly inside.

[0017] Preferably, a detachable box cover is fixedly provided at the top opening of the battery box body, and the box cover covers the grid line sensor, the fire extinguishing dry powder and the protective film.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0020] (1) The utility model is a car battery fire extinguishing device, including a battery box body, wherein a cavity is provided in the battery box body, a battery cell is fixedly provided on one side of the cavity, and the adjacent side of the cavity is a side wall, and a temperature sensor and a light sensor are fixedly installed on the side wall; the side opposite to the battery cell is the top, and a grid line sensor is provided; the outer surface of the battery box body is provided with a grid sensor. Through the temperature sensor installed in the internal space of the battery box body, the temperature of the internal space of the battery can be observed during charging, and the temperature of the internal space of the battery can be known in real time during operation. When the temperature reaches a certain temperature, the fire extinguishing instrument panel will alarm and remind. If the battery has not caught fire, the alarm prompts that all operations must be stopped and wait for professionals to check. When the sensor line on the grid line sensor is burned, the fire extinguishing device around the battery cell will be triggered to automatically rotate and spray to extinguish the fire, greatly reducing the possibility of battery fire during charging or operation. The overall battery box is equipped with a fire extinguishing device diagonally, and a grid sensor is installed on the outside of the battery box. When the flame burns out of the grid sensor, it will trigger the diagonal fire extinguishing component to automatically rotate and extinguish the fire. A light sensor is installed in the internal cavity of the battery. Once a flame appears, the light sensor triggers the fire extinguishing component to spray automatically within 5 seconds. The setting of these sensors can transmit and detect fire conditions in a timely manner to prevent the control circuit from being damaged in advance when a fire occurs, which will cause the fire extinguishing component to fail.

[0021] (2) The utility model of a car battery fire extinguishing device also includes a fire extinguishing component instrument panel arranged in the battery box body, and the temperature sensor, the light sensor, the grid line sensor, and the grid sensor are all electrically connected to the fire extinguishing component instrument panel through sensor lines. When the fire extinguishing component instrument panel exceeds a certain value range, an alarm will be triggered. The driver can observe the temperature change of the battery in time through the fire extinguishing component instrument panel, take battery fire extinguishing measures, and prevent the fire from becoming uncontrollable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a car battery fire-fighting device of the utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the battery box body of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the top of the battery box of the utility model;

[0025] Explanation of the symbols in the schematic diagram:

[0026] 100, battery box body; 110, battery box base; 120, protective film; 130, fire extinguishing powder; 140, box body; 150, box cover; 160, spray fire extinguishing assembly; 161, automatic rotating nozzle 1; 162, driving mechanism 1; 200, battery cell; 210, fire extinguishing assembly; 211, automatic rotating nozzle 2; 212, driving mechanism 2; 300, grid line sensor; 400, temperature sensor; 500, light sensor; 600, grid sensor; a, side wall; b, top; c, bottom DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0031] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Example 1

[0034] Reference Figure 1 , Figure 2 , Figure 3 As shown, an automobile battery fire fighting device of the present embodiment includes a battery box body 100, wherein a cavity is provided in the battery box body 100, a battery cell 200 is fixedly provided on one side of the cavity, and an adjacent side of the side is a side wall a, on which a temperature sensor 400 and a light sensor 500 are fixedly installed; a side opposite to the battery cell 200 is a top b, on which a grid line sensor 300 is provided; a grid sensor 600 is provided on the outer surface of the battery box body 100; and a fire extinguishing component instrument panel 220 is also included which is provided in the battery box body 100, and the temperature sensor 400, the light sensor 500, the grid line sensor 300, and the grid sensor 600 are all electrically connected to the fire extinguishing component instrument panel 220 through sensor lines. Through the temperature sensor 400 installed in the internal space of the battery box body 100, the temperature is sensed on the fire extinguishing setting instrument panel 220. The fire extinguishing setting instrument panel 220 is electrically connected to the vehicle display screen. The content expressed by the fire extinguishing setting instrument panel 220 can be displayed on the vehicle display screen. The temperature of the internal space of the battery can be observed during charging, and the temperature of the internal space of the battery can be known in real time during operation. When the temperature reaches a certain temperature, the fire extinguishing setting instrument panel 220 will alarm and remind. When the battery has not caught fire, the alarm prompts that all operations must be stopped. At this time, the driver is reminded to pay attention to changes in battery temperature and take battery fire extinguishing measures.

[0035] This embodiment also includes a fire extinguishing assembly 210. Two groups of fire extinguishing assemblies 210 are arranged around the battery cell 200, and the two groups of fire extinguishing assemblies 210 are symmetrically arranged on both sides of the battery cell 200. The fire extinguishing assembly 210 includes an automatic rotating nozzle 211 and a driving mechanism 212. The automatic rotating nozzle 211 is arranged on the rotating shaft of the driving mechanism 212 and is driven by the driving mechanism 212 to rotate. The spraying angle of the automatic rotating nozzle 211 is set to an elevation angle of 45°. The rotation angle of the automatic rotating nozzle 211 driven by the driving mechanism 212 is adapted to the direction and distance of the automatic rotating nozzle 211 relative to the battery cell 200 so that the automatic rotating nozzle 211 covers the battery cell 200 within the rotation range; the height of the automatic rotating nozzle 211 is 5 cm higher than the upper surface of the battery cell 200. The nozzle height of the fire extinguishing assembly 210 is higher than the upper surface of the battery cell 200 so that the sprayed fire extinguishing agent can better cover the flame. A light sensor 500 is installed in the internal space of the battery. Once a fire appears, the fire extinguishing component 210 will be triggered to turn on. The light sensor 500 will automatically trigger the fire extinguishing component to spray within 5 seconds after the touch point.

[0036] This embodiment also includes a protective film. A protective film 120 is provided inside the cavity of the battery box body 100, and the protective film 120 is bonded to the side walls a around the battery box body 100; the grid line sensor 300 is located between the protective film 120 and the top b. Fire extinguishing dry powder 130 is filled between the protective film 120 and the top b of the battery box body 100. The grid line sensor 300 is composed of two groups of sensor lines arranged crosswise in a horizontal and vertical manner, and each group of sensor lines is composed of a number of sensor lines arranged evenly at equal distances. By installing a grid line sensor 300 on the protective film 120, when the grid lines are burned by fire, the fire extinguishing assembly 210 around the battery cell 200 connected to the sensor lines automatically rotates and sprays to extinguish the fire, greatly reducing the possibility of fire when the battery is charging or running.

[0037] This embodiment also includes two eruption fire extinguishing components 160 disposed on the outside of the battery box body 100. The two eruption fire extinguishing components 160 are in diagonal positions, and the eruption fire extinguishing component 160 includes an automatic rotating nozzle 161 and a driving mechanism 162. The automatic rotating nozzle 161 is disposed on the rotation axis of the driving mechanism 162 and is driven by the driving mechanism 162 to rotate. The spraying angle of the automatic rotating nozzle 161 is set to an elevation angle of 45°. The rotation angle of the automatic rotating nozzle 161 driven by the driving mechanism 162 is adapted to the direction and distance of the automatic rotating nozzle 161 relative to the battery box body 100 so that the automatic rotating nozzle 161 covers the battery box body 100 within the rotation range. The eruption fire extinguishing device 160 is installed diagonally on the outside of the overall battery box, and a grid sensor 600 is installed on the outside of the battery box. When the flame burns out, the grid sensor 600 will trigger the eruption fire extinguishing device 160 on the diagonal side to automatically rotate and erupt to extinguish the fire.

[0038] Example 2

[0039] Reference Figure 1 , Figure 2 , Figure 3 As shown, a car battery fire fighting device of this embodiment has the same basic structure as that of embodiment 1, except that a fire extinguishing dry powder 130 is added in this embodiment.

[0040] The fire extinguishing dry powder 130 is filled between the protective film 120 and the top b of the battery box body 100; a layer of fire extinguishing dry powder 130 is added around the side wall a of the battery box body 100, and a layer of protective film 120 is added on the dry powder; a detachable box cover 150 is fixedly provided at the opening of the top b of the battery box body 100, and the box cover 150 covers the grid line sensor 300, the fire extinguishing dry powder 130, and the protective film 120. When a flame burns through the protective film 120, the fire extinguishing dry powder 130 will automatically fall to the flame point, and then the fire extinguishing dry powder 130 will cover the flame point to extinguish the fire. The grid line sensor 300 is added on the protective film 120 on the top b surface. When the grid line is burned by fire, the fire extinguishing assembly 210 connected to the battery cell around the sensor line automatically rotates and sprays to extinguish the fire.

[0041] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. An automobile battery fire-fighting device, characterized in that: The battery box body (100) comprises a cavity, wherein the battery box body (100) is provided with a battery cell (200) fixedly provided on one side of the cavity, and the side adjacent to the side is a side wall (a), and a temperature sensor (400) and a light sensor (500) are fixedly installed on the side wall (a); the side opposite to the battery cell (200) is a top (b), and a grid line sensor (300) is provided; and a grid sensor (600) is provided on the outer surface of the battery box body (100); Also included is a fire extinguishing component instrument panel (220) disposed in the battery box body (100); the temperature sensor (400), the light sensor (500), the grid line sensor (300), and the grid sensor (600) are all electrically connected to the fire extinguishing component instrument panel (220) via sensor lines.

2. The automobile battery fire fighting device according to claim 1, characterized in that: The grid line sensor (300) is composed of two groups of sensor lines arranged crosswise in a horizontal and vertical manner, and each group of sensor lines of the grid line sensor (300) is composed of a plurality of sensor lines arranged evenly and at equal distances.

3. The automobile battery fire fighting device according to claim 1, characterized in that: A protective film (120) is arranged inside the cavity of the battery box body (100), and the protective film (120) is bonded to the side walls (a) around the battery box body (100); the grid line sensor (300) is located between the protective film (120) and the top (b).

4. The automobile battery fire fighting device according to claim 1, characterized in that: Two groups of fire extinguishing components (210) are arranged around the battery cell (200), and the two groups of fire extinguishing components (210) are symmetrically arranged on both sides of the battery cell (200). The fire extinguishing components (210) include an automatic rotating nozzle (211) and a driving mechanism (212). The automatic rotating nozzle (211) is arranged on the rotation axis of the driving mechanism (212) and is driven by the driving mechanism (212) to rotate. The spraying angle of the automatic rotating nozzle (211) is set to an elevation angle of 45°. The driving mechanism (212) drives the automatic rotating nozzle (211) to rotate at an angle that matches the direction and distance of the automatic rotating nozzle (211) relative to the battery cell (200) so that the automatic rotating nozzle (211) covers the battery cell (200) within the rotation range. The height of the automatic rotating nozzle (211) is 5 cm higher than the upper surface of the battery cell (200).

5. The automobile battery fire fighting device according to claim 1, characterized in that: Two spraying fire extinguishing assemblies (160) are arranged on the outside of the battery box body (100), and the two spraying fire extinguishing assemblies (160) are diagonally located. The spraying fire extinguishing assembly (160) comprises an automatic rotating nozzle (161) and a driving mechanism (162). The automatic rotating nozzle (161) is arranged on the rotation axis of the driving mechanism (162) and is driven by the driving mechanism (162) to rotate. The spraying angle of the automatic rotating nozzle (161) is set to an elevation angle of 45°. The rotation angle of the automatic rotating nozzle (161) driven by the driving mechanism (162) is adapted to the direction and distance of the automatic rotating nozzle (161) relative to the battery box body (100) so that the automatic rotating nozzle (161) covers the battery box body (100) within the rotation range.

6. The automobile battery fire fighting device according to claim 3, characterized in that: Fire extinguishing dry powder (130) is filled between the protective film (120) and the four sides of the side walls (a) inside the battery box body (100); and fire extinguishing dry powder (130) is filled between the protective film (120) and the top (b) of the battery box body (100).

7. The automobile battery fire extinguishing device according to claim 4, characterized in that: A battery box base (110) is provided at the bottom (c) where the battery cell (200) is located, and the battery box base (110) is fixed to the bottom (c) of the battery box body (100), and the battery box body (100) wraps the battery cell (200) and the fire extinguishing assembly (210) inside.

8. The automobile battery fire fighting device according to claim 6, characterized in that: A detachable box cover (150) is fixedly provided at the top (b) opening of the battery box body (100), and the box cover (150) covers the grid line sensor (300), the fire extinguishing dry powder (130), and the protective film (120).

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