Safety protection device

Abstract

The utility model discloses a safety protection device. The safety protection device comprises a vehicle body and a cover body. The vehicle body is provided with a mounting space, the upper side of the mounting space is open to form a first opening, the vehicle body is suitable for being fixed to a floor, and the battery is suitable for being placed in the mounting space; the cover body covers the first opening and is connected with the vehicle body, and one circumferential side of the cover body is opened to form a second opening. According to the safety protection device, the structure is simple, explosion energy of the battery can be effectively blocked and guided to a safety area, and casualties and property losses are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a safety protection device. Background Art

[0002] In the relevant technologies, new energy vehicles have become the main development trend of the automotive industry, and power batteries are an indispensable component of new energy vehicles. The controllable safety of power batteries has also attracted more and more attention. At the same time, safety issues such as thermal runaway, fire and explosion of power batteries have brought many challenges to automotive R&D and testing, directly affecting the development of the automotive industry. How to achieve the safety protection of batteries stored in the laboratory has become a difficult problem. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a safety protection device, which has a simple structure and can effectively block the explosion energy of the battery and guide it to a safe area, thereby reducing casualties and property losses.

[0004] According to the safety protection device of the embodiment of the utility model, it includes: a vehicle body and a cover body. The vehicle body has an installation space, the upper side of the installation space is open to form a first opening, the vehicle body is suitable for being fixed on the floor, and the battery is suitable for being placed in the installation space; the cover body is arranged at the first opening and connected to the vehicle body, and one circumferential side of the cover body is open to form a second opening.

[0005] According to the safety protection device of the embodiment of the utility model, by setting the cover body with a second opening on one side of the circumference to cover the first opening of the vehicle body, when the battery stored in the vehicle body has thermal runaway or even explodes, the explosion energy generated by the battery can be effectively blocked and directed to a safe area, effectively reducing the battery safety accident rate and the casualties and property losses caused by the accident. In addition, the cover body is connected to the vehicle body, and the vehicle body is suitable for fixing on the floor, with a simple structure, easy installation and convenient maintenance.

[0006] According to some embodiments of the present invention, a support rail is provided on the bottom wall of the installation space, and the battery is arranged on the support rail.

[0007] In some embodiments of the present invention, the support rails are provided on two opposite sides of the bottom wall of the installation space, and the support rails extend along corresponding edges of the installation space.

[0008] According to some embodiments of the present invention, support legs are provided on the lower surface of the vehicle body, and at least one support leg is configured as a grounding wire.

[0009] According to some embodiments of the utility model, a smoke exhaust port is provided on the cover body, and the smoke exhaust port is connected to a smoke exhaust machine pipe of the test room where the safety protection device is located.

[0010] According to some embodiments of the utility model, the safety protection device also includes a high-pressure water nozzle, which is arranged on the inner wall surface of the cover body and is connected to a water source pipe for spraying water to the battery.

[0011] According to some embodiments of the present utility model, the safety protection device further includes an infrared thermometer, which is disposed on the inner wall surface of the cover body and is used to detect the battery temperature.

[0012] According to some embodiments of the utility model, the safety protection device further includes an insulation detector, which is suitable for being installed on the high-voltage line of the battery to detect the insulation value of the battery.

[0013] According to some embodiments of the present invention, the top wall of the cover body is inclined upward in a direction toward the second opening.

[0014] According to some embodiments of the utility model, a cart handle is provided on one side of the cart body; and / or a hook is provided on the outer top wall of the cover body.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a three-dimensional diagram of a safety protection device according to an embodiment of the utility model;

[0018] Figure 2 is a three-dimensional diagram of a vehicle body of a safety protection device according to an embodiment of the utility model;

[0019] Figure 3 is a three-dimensional diagram of a cover body of a safety protection device according to an embodiment of the utility model;

[0020] Figure 4 is a three-dimensional view of the cover of the safety protection device according to an embodiment of the utility model from another angle;

[0021] Figure 5 is a system schematic diagram of a safety protection device according to an embodiment of the utility model;

[0022] Figure 6 It is a circuit diagram of an insulation tester according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100. Safety protection devices;

[0025] 1. Car body; 11. Installation space; 111. First opening; 112. Support rail; 12. Support leg; 13. Cart handle;

[0026] 2. hood body; 21. second open opening; 22. smoke exhaust port; 23. hook;

[0027] 3. High-pressure water nozzle;

[0028] 4. Infrared thermometer;

[0029] 5. Desktop computer;

[0030] 6. Insulation tester. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference below Figure 1-Figure 6 A safety protection device 100 according to an embodiment of the present invention is described.

[0035] like Figure 1 As shown, the safety protection device 100 according to the embodiment of the utility model includes a vehicle body 1 and a cover body 2.

[0036] Specifically, Figure 2 As shown, the vehicle body 1 has an installation space 11, and the battery is suitable for being placed in the installation space 11, so that the battery can be stored in the vehicle body 1 of the safety protection device 100, and the upper side of the installation space 11 is open to form a first open opening 111, which is convenient for removing and installing the battery from the first open opening 111, and the vehicle body 1 is suitable for being fixed to the floor, and the vehicle body 1 and the floor can be connected and fixed by fasteners such as bolts, and the installation is simple and convenient and easy to replace.

[0037] like Figure 3 and Figure 4 As shown, the cover 2 is covered at the first open opening 111 and connected to the vehicle body 1. Preferably, the cover 2 and the vehicle body 1 are detachably connected. For example, the cover 2 and the vehicle body 1 can be connected by fasteners or snap-on connection. The structure is simple, easy to install and convenient for maintenance. When the battery thermal runaway explodes, the cover 2 covered at the first open opening 111 can effectively block the explosion energy generated by the battery, and play a safety protection role for the battery stored in the laboratory. Among them, one side of the circumference of the cover 2 is open to form a second open opening 21. The second open opening 21 makes the battery in the vehicle body 1 in a non-sealed space. When the battery has a fire explosion or other accidents, the explosion energy can be discharged through the second open opening 21. When the cover 2 and the vehicle body 1 are installed and fixed, the second open opening 21 of the cover 2 can be set to face the safe area, so that the explosion energy generated by the battery can be guided to the safe area by the cover 2, which can effectively reduce the battery safety accident rate and prevent casualties and property losses caused by the explosion energy.

[0038] Preferably, the material of the body 1 and the cover 2 is 304 stainless steel with good explosion-proof performance. The thickness of the body 1 and the cover 2 can be selected according to the pressure of the shock wave generated by the battery explosion, wherein the battery explosion shock wave pressure satisfies the functional relationship y=17.32-12.94x+12.25x 2 (y: battery explosion shock wave pressure, unit is bar; x: battery capacity, unit is Ah).

[0039] According to the safety protection device 100 of the embodiment of the utility model, by setting the cover body 2 with a second opening 21 on one side of the circumference to cover the first opening 111 of the vehicle body 1, when the battery stored in the vehicle body 1 has thermal runaway or even explodes, the explosion energy generated by the battery can be effectively blocked and directed to a safe area, effectively reducing the battery safety accident rate and the casualties and property losses caused by the accident. In addition, the cover body 2 is connected to the vehicle body 1, and the vehicle body 1 is suitable for being fixed on the floor, with a simple structure, easy installation and convenient maintenance.

[0040] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, a support rail 112 is provided on the bottom wall of the installation space 11, and the battery is arranged on the support rail 112. The battery and the support rail 112 can be connected and fixed by fasteners such as bolts, and the installation is simple and convenient, and it is easy to disassemble and replace. Among them, a plurality of raised platforms can be provided under each support rail 112, so that there is a certain distance between the bottom wall of the battery and the bottom wall of the installation space 11, which is conducive to the heat dissipation of the battery.

[0041] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, support rails 112 are provided on two opposite sides of the bottom wall of the installation space 11, and the support rails 112 extend along the corresponding edges of the installation space 11. On the one hand, the support rails 112 can support the battery on the corresponding sides of the bottom wall of the battery, so that the battery can be installed more stably and securely. On the other hand, only the support rails 112 are provided on the two opposite sides of the bottom wall of the installation space 11, and the number of the support rails 112 can be reduced without affecting the support effect, thereby simplifying the structure of the vehicle body 1.

[0042] In some embodiments of the present invention, Figure 1 and Figure 2As shown, a support leg 12 is provided on the lower surface of the vehicle body 1. Optionally, the vehicle body 1 is a rectangular parallelepiped structure, the bottom wall of the vehicle body 1 is a rectangle, and there can be four support legs 12, which are respectively arranged at the four corners of the lower surface of the vehicle body 1, which can increase the stability of the vehicle body 1, and the vehicle body 1 can also be connected and fixed to the floor through the support legs 12, which is convenient for installation. Among them, at least one support leg 12 is configured as a grounding wire, and the grounding wire is connected to the effective grounding point of the test room where the safety protection device 100 is located, which can lead the electricity on the vehicle body 1 with a risk of being charged to the ground, so as to prevent electric shock accidents after people touch the safety protection device 100.

[0043] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the housing 2 is provided with a smoke exhaust port 22, which is connected to the smoke exhaust pipe of the laboratory where the safety protection device 100 is located, and is used to exhaust smoke, water vapor or harmful gases, etc., which appear in the safety protection device 100. Preferably, the smoke exhaust pipe and the smoke exhaust port 22 are fastened and connected by a clamp, which is simple to connect and easy to disassemble, ensuring the stability and safety of the pipe while also facilitating the replacement and maintenance of the smoke exhaust pipe and other components. The smoke exhaust machine in the laboratory is connected to the bench computer 5 in the laboratory for communication, and the safety protection device 100 is provided with a signal monitoring component for real-time monitoring of the battery. When the battery in the safety protection device 100 has thermal runaway, the signal monitoring component will detect the abnormality and send a signal to the bench computer 5, which will receive the signal and quickly transmit the signal to the smoke exhaust machine, triggering the smoke exhaust machine in the laboratory to start, so that the smoke, water vapor or harmful gases, etc. in the safety protection device 100 can be discharged from the smoke exhaust port 22 in time, so as to prevent smoke and water vapor from affecting the judgment of the accident situation in the safety protection device 100 by the personnel, and at the same time prevent the personnel from inhaling smoke or harmful gases, etc. and causing harm.

[0044] In some embodiments of the present invention, Figure 1 and Figure 4As shown, the safety protection device 100 also includes a high-pressure water nozzle 3, which is arranged on the inner wall surface of the cover body 2. The high-pressure water nozzle 3 is connected to the water source pipe and is used to spray water to the battery. A large amount of water can be introduced in a short time to spray and cool the battery and extinguish the fire, so as to quickly submerge the battery and prevent the battery from continuing to heat up and burn. The high-pressure water nozzle 3 and the water source pipe can be connected by a threaded joint, which is simple to connect and easy to disassemble, ensuring the stability and safety of the connection between the high-pressure water nozzle 3 and the water source pipe while also facilitating replacement and maintenance. Furthermore, the high-pressure water nozzle 3 can be an adjustable rotating nozzle, and the water spraying direction of the high-pressure water nozzle 3 can be adjusted by rotating the rotatable part, so that a certain area of ​​the battery can be accurately sprayed with water for cooling. The high-pressure water nozzle 3 is connected to the bench computer 5 in the laboratory. The safety protection device 100 is provided with a signal monitoring component for real-time monitoring of the battery. When the battery in the safety protection device 100 has thermal runaway, the signal monitoring component will detect the abnormality and send a signal to the bench computer 5. The bench computer 5 will receive the signal and quickly transmit the signal to the high-pressure water nozzle 3, triggering the water circuit of the high-pressure water nozzle 3 to open. By adjusting the spraying direction of the high-pressure water nozzle 3 and controlling the spraying pressure of the high-pressure water nozzle 3, precise water spraying and cooling of a certain area where the battery has thermal runaway can be achieved to prevent the battery from continuing to heat up and burn. After a period of continuous water spraying, the water in the vehicle body 1 will submerge the battery, avoiding the risk of insufficient water and failure to completely extinguish the fire. Among them, a water level detection switch is provided in the vehicle body 1 and the water level detection switch is communicated with the bench computer 5 in the laboratory. When the water level detection switch detects that the water level in the vehicle body 1 reaches the set threshold, the water level detection switch can quickly transmit the signal to the bench computer 5, and the bench computer 5 will control the high-pressure water nozzle 3 to stop spraying and maintain the liquid level to ensure that the water in the vehicle body 1 will not leak or overflow.

[0045] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the safety protection device 100 also includes an infrared thermometer 4, which is arranged on the inner wall surface of the cover body 2 and is used to detect the battery temperature. The shell surface of the battery is divided into multiple areas, and the infrared thermometer 4 can perform multi-point detection on the shell surface temperature of multiple areas of the battery. The infrared thermometer 4 is connected to the bench computer 5 in the laboratory. When the infrared thermometer 4 detects that the temperature change rate of a certain area of ​​the battery exceeds the set threshold, it will transmit a signal to the bench computer 5 in the laboratory. The bench computer 5 determines that the battery in the vehicle body 1 has thermal runaway or there is a risk of thermal runaway, and will send a control signal to trigger the high-pressure water nozzle 3 to accurately spray water to cool the area where the battery has thermal runaway, and at the same time send a signal to control the smoke exhaust fan to start and discharge the smoke and water vapor in the safety protection device 100. Among them, the threshold of the temperature change rate can be determined according to actual conditions, experience or experiments, etc., and the utility model does not make specific restrictions on this.

[0046] In some embodiments of the present invention, Figure 6 As shown, the safety protection device 100 also includes an insulation detector 6, which is suitable for installation on the high-voltage line of the battery to detect the insulation value of the battery. The insulation detector 6 is connected to the bench computer 5 in the laboratory. When the insulation value of the high-voltage system of the battery monitored in real time by the insulation detector 6 is less than or equal to a set threshold value such as 100kΩ, the insulation detector 6 will transmit a signal to the bench computer 5 in the laboratory. The bench computer 5 determines that the battery in the vehicle body 1 has thermal runaway or there is a risk of thermal runaway, and then quickly transmits the control signal to the high-pressure water nozzle 3 and the smoke exhaust fan. The safety protection device 100 can intelligently judge the thermal runaway of the battery and avoid the risk of misjudgment. Among them, the threshold value of the insulation value can be determined or adjusted according to actual conditions, experience or experiments, etc., and the utility model does not make specific limitations on this.

[0047] In some embodiments of the present invention, Figure 5 As shown, the battery management system BMS, infrared thermometer 4 and insulation detector 6 of the battery can all be connected to the bench computer 5 in the laboratory for communication. When the battery management system BMS of the battery reports a fault signal, and the insulation monitor detects that the insulation value of the high-voltage system of the battery is less than or equal to a set threshold value such as 100kΩ, and the infrared thermometer 4 detects that the temperature change rate of a certain area on the shell surface of the battery exceeds the set threshold value, the system determines that a certain area of ​​the battery has thermal runaway or there is a risk of thermal runaway. The bench computer 5 in the laboratory will then quickly transmit the control signal to the high-pressure water nozzle 3 and the smoke exhaust fan. The safety protection device 100 can intelligently determine whether the battery has thermal runaway through multiple signals, greatly reducing the risk of misjudgment and avoiding losses caused by the battery being sprayed with water by mistake.

[0048] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the top wall of the cover body 2 is inclined upward in the direction toward the second open port 21. When the battery in the safety protection device 100 explodes due to thermal runaway, the shock wave generated by the battery explosion can move upward along the inclined direction of the top wall of the cover body 2 and be directed to the second open port 21 for discharge, which is conducive to better release of the explosion energy and directing the explosion energy to a safe area. Preferably, the top wall of the cover body 2 is 25° with the horizontal plane, and the angle between the top wall of the cover body 2 and the horizontal plane can be determined or adjusted according to actual conditions, experience or experiments, etc., and the present invention does not make specific restrictions on this.

[0049] In some embodiments of the present invention, Figure 1 and Figure 2As shown, a cart handle 13 is provided on one side of the vehicle body 1, so that a person can hold the cart handle 13 to move the vehicle body 1 and the safety protection device 100, which is convenient for carrying. In addition, a hook 23 is provided on the outer top wall of the cover body 2. The cover body 2 can be lifted and installed on the vehicle body 1 by the hook 23, which is convenient for assembly and maintenance.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A safety protection device, characterized in that: include: A vehicle body, the vehicle body having an installation space, the upper side of the installation space is open to form a first opening, the vehicle body is suitable for being fixed on a floor, and the battery is suitable for being placed in the installation space; A cover body is disposed at the first opening and connected to the vehicle body, and one circumferential side of the cover body is open to form a second opening.

2. The safety protection device according to claim 1, characterized in that: A support rail is provided on the bottom wall of the installation space, and the battery is arranged on the support rail.

3. The safety protection device according to claim 2, characterized in that: The support rails are provided on opposite sides of the bottom wall of the installation space, and the support rails extend along the corresponding edges of the installation space.

4. The safety protection device according to claim 1, characterized in that: Support legs are provided on the lower surface of the vehicle body, and at least one of the support legs is configured as a grounding wire.

5. The safety protection device according to claim 1, characterized in that: The cover body is provided with a smoke exhaust port, and the smoke exhaust port is connected to the smoke exhaust machine pipeline of the test room where the safety protection device is located.

6. The safety protection device according to claim 1, characterized in that: Also includes: A high-pressure water nozzle is arranged on the inner wall surface of the cover body, and the high-pressure water nozzle is connected to a water source pipe for spraying water to the battery.

7. The safety protection device according to claim 1, characterized in that: Also includes: An infrared thermometer is arranged on the inner wall surface of the cover body and is used to detect the temperature of the battery.

8. The safety protection device according to claim 1, characterized in that: Also includes: An insulation tester is suitable for being installed on the high-voltage line of the battery and is used to detect the insulation value of the battery.

9. The safety protection device according to claim 1, characterized in that: The top wall of the cover body is inclined upward in a direction toward the second opening.

10. The safety protection device according to claim 1, characterized in that: A cart handle is provided on one side of the cart body; And / or, a hook is provided on the outer top wall of the cover body.

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