Thermal runaway alarm device for lithium battery

Abstract

The thermal runaway alarm device for the lithium battery comprises an electric control cabinet, the side edge of the electric control cabinet is electrically connected with an elastic cable, the elastic cable is electrically connected with external power equipment through a power connection bolt, and the surface of the electric control cabinet is electrically connected with a display screen. The side edge of the display screen is provided with a work indicating lamp electrically connected with the electric control cabinet, functional buttons and a numeric keyboard which are electrically connected with the electric control cabinet are arranged below the display screen, a switch button electrically connected with the electric control cabinet is arranged below the numeric keyboard, and the side edge of the electric control cabinet is electrically connected with a buzzing alarm. According to the thermal runaway alarm device for the lithium battery, various phenomena generated in the thermal runaway process of the lithium battery are monitored in a triple monitoring and cross comparison mode, and the accuracy, sensitivity and flexibility of thermal runaway monitoring of the lithium battery are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery, concretely is a kind of thermal runaway alarm device for lithium battery. BACKGROUND

[0002] Lithium battery is a kind of battery by lithium metal or lithium alloy as positive / negative electrode material, using non-aqueous electrolyte solution, due to the chemical properties of lithium metal is very active, make the processing, preservation, use of lithium metal, the requirement to environment is very high.1912 year lithium metal battery earliest by Gilbert N.Lewis is proposed and research.20 Century 70 when, M.S.Whittingham proposes and begins to research lithium ion battery, with the development of science and technology, lithium battery has become mainstream, is widely used in household appliances, chemical industry, medical treatment and each industry.

[0003] If lithium battery exists manufacturing defect, or is subjected to mechanical damage, overcharge overdischarge and excessively severe external environment, there is the risk of thermal runaway, lead to battery temperature sharply increases, possibly cause explosion and fire, cause great security risk, therefore provide a kind of thermal runaway alarm device for lithium battery. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of thermal runaway alarm device for lithium battery to solve the problem that the existing lithium battery thermal runaway possibly causes explosion and fire in the background art, cause great security risk.

[0005] The technical scheme of the utility model is realized as follows: a kind of thermal runaway alarm device for lithium battery, including electric control cabinet, the electric control cabinet side edge is electrically connected with elastic cable line, the elastic cable line is electrically connected with external power equipment by power connection plug, the electric control cabinet surface is electrically connected with display screen, the display screen side is provided with the working indicator light of electrically connected with the electric control cabinet, the display screen below is provided with the function button and digital keyboard of electrically connected with the electric control cabinet, the digital keyboard below is provided with the switch button of electrically connected with the electric control cabinet, the side of the electric control cabinet is electrically connected with buzzer alarm, the bottom of the electric control cabinet is electrically connected with three composite cable lines, three the composite cable line below is electrically connected with temperature detection sensor, pressure detection module and smoke detection sensor module respectively.

[0006] Preferably, the electric control cabinet side edge is electrically connected with wireless communication module, the communication frequency of the wireless communication module is adapted to user remote control end.

[0007] Preferably, the pressure detection module comprises a pressure sensor electrically connected with the composite cable, a fixed frame in the shape of a cuboid is arranged below the pressure sensor, a pressure sensing patch electrically connected with the pressure sensor is arranged on the inner bottom of the fixed frame, and a sticky ring belt is arranged around the bottom of the fixed frame.

[0008] Preferably, the smoke detection sensor module comprises a smoke detection sensor electrically connected with the composite cable, a ventilation grille is arranged on the side of the smoke detection sensor, and a sticky block is arranged at the bottom of the smoke detection sensor.

[0009] Preferably, the electric control cabinet is plug-in electrically connected with the composite cable.

[0010] With the above technical scheme, the utility model has the beneficial effects that:

[0011] The lithium battery thermal runaway alarm device monitors various phenomena generated in the thermal runaway process of the lithium battery through a triple monitoring and cross comparison mode, and improves the accuracy, sensitivity and flexibility of lithium battery thermal runaway monitoring. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is the enlarged partial sectional view of the pressure detection module of the utility model;

[0015] Figure 3 It is the enlarged view of the smoke detection sensor module of the utility model.

[0016] Wherein: 1, electric control cabinet;2, display screen;3, function button;4, digital keyboard;5, switch button;6, elastic cable;7, power connection post;8, composite cable;9, temperature detection sensor;10, pressure detection module;11, smoke detection sensor module;12, working indicator light;13, buzzer alarm;14, wireless communication module;1001, pressure sensor;1002, fixed frame;1003, pressure sensing patch;1004, sticky ring belt;1101, smoke detection sensor;1102, ventilation grille;1103, sticky block. DETAILED DESCRIPTION

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] See Figure 1 A thermal runaway alarm device for lithium batteries includes an electrical control cabinet 1. A flexible cable 6 is electrically connected to the side of the electrical control cabinet 1. The flexible cable 6 is electrically connected to external power equipment via a connector 7. A display screen 2 is electrically connected to the surface of the electrical control cabinet 1. A working indicator light 12, electrically connected to the electrical control cabinet 1, is located on the side of the display screen 2. Function buttons 3 and a numeric keypad 4, both electrically connected to the electrical control cabinet 1, are located below the display screen 2. A switch button 5, also electrically connected to the electrical control cabinet 1, is located below the numeric keypad 4. A buzzer alarm 13 is electrically connected to the side of the electrical control cabinet 1. Three composite cables 8 are electrically connected to the bottom of the electrical control cabinet 1. A temperature detection sensor 9, a pressure detection module 10, and a smoke detection sensor module 11 are electrically connected to the bottom of the three composite cables 8, respectively.

[0019] See Figure 1 The side of the electrical control cabinet 1 is electrically connected to a wireless communication module 14. The communication frequency of the wireless communication module 14 is compatible with the user's remote control terminal. This setting facilitates the use of wireless communication to promptly notify users that the lithium battery is in a thermal runaway state and provides a better warning effect.

[0020] See Figure 2 The pressure detection module 10 includes a pressure sensor 1001 electrically connected to the composite cable 8. A cuboid-shaped fixing frame 1002 is provided below the pressure sensor 1001. A pressure sensing patch 1003 electrically connected to the pressure sensor 1001 is provided at the bottom of the fixing frame 1002. An adhesive ring 1004 is provided around the bottom of the fixing frame 1002. This arrangement facilitates the fixing of the pressure detection module 10 to the surface of the lithium battery using the adhesive ring 1004. When the lithium battery begins to thermally runaway, a bulging phenomenon occurs. At this time, the top of the bulge touches the pressure sensing patch 1003, generating a continuously increasing pressure on the pressure sensing patch 1003. The pressure sensing patch 1003 feeds back the pressure information to the pressure sensor 1001 for processing, thereby monitoring the bulging condition of the lithium battery surface in real time.

[0021] See Figure 3The smoke detection sensor module 11 comprises a smoke detection sensor 1101 electrically connected with the composite cable 8, a ventilation grille 1102 is arranged at the side of the smoke detection sensor 1101, and a sticking block 1103 is arranged at the bottom of the smoke detection sensor 1101, so that the smoke concentration can be detected by the ventilation grille 1102 when the lithium battery is in thermal runaway, and the smoke detection sensor 1101 can be fed back to process.

[0022] Referring to Figure 1 The electric control cabinet 1 is electrically connected with the composite cable 8 in a plug-in manner, so that the required sensors can be replaced at any time according to the needs, the time for overhauling and maintaining the sensors is saved, and the use is more flexible.

[0023] Working principle: when the device is used, first, the power connection rod 7 is electrically connected with an external power supply device to supply power to the electric control cabinet 1, and the smoke detection sensor module 11 is attached to the surface of the lithium battery, the temperature detection sensor 9 and the smoke detection sensor module 11 are fixed near the lithium battery, when the lithium battery is in thermal runaway, a large amount of smoke is generated in the lithium battery, the lithium battery is expanded, the expansion is in contact with the bottom of the pressure detection module 10, the pressure detection module 10 generates a changing pressure, the pressure detection module 10 collects the pressure change data, feeds back to the electric control cabinet 1 for processing and displays on the display screen 2, as the thermal runaway of the lithium battery continues, a large amount of heat is generated, and the smoke is also dispersed, at this time, the temperature detection sensor 9 collects the temperature change near the lithium battery, feeds back to the electric control cabinet 1 for processing and displays on the display screen 2, at the same time, the smoke detection sensor module 11 collects the smoke concentration change near the lithium battery, feeds back to the electric control cabinet 1 for processing and displays on the display screen 2, through three cross comparisons, the limit value of the monitoring of the electric control cabinet 1 is reached, at this time, the electric control cabinet 1 sends an alarm through the buzzer 13 to prompt the user to handle the thermal runaway of the lithium battery in time to avoid the danger caused by the further spread of the fire.

[0024] In the description of the present application, the terms "connection", "installation", "fixation", "arrangement" and the like are understood in a broad sense, for example, "connection" can be fixed connection or indirectly through intermediate components, can also be integral connection or partial connection, as the case for a person skilled in the art, the specific meaning of the above terms in the present application or utility model can be understood according to the specific circumstances, in the present application, the directions or position relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like are based on the directions or position 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 direction, or to be constructed and operated in a specific direction. Finally, it should be noted that when describing the position of each component and the cooperation relationship between them, one pair of components is usually taken as an example, however, a person skilled in the art should understand that such position, cooperation relationship and the like are also applicable to other components or other pairs of components.

[0025] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermal runaway alarm device for a lithium battery, characterized by: Including the electric control cabinet (1), the electric control cabinet (1) side electric connection has the elastic cable (6), the elastic cable (6) is connected with external power equipment through the electricity stake (7), the electric control cabinet (1) surface electric connection has display screen (2), the display screen (2) side is provided with the working indicating lamp (12) with the electric control cabinet (1) electric connection, the display screen (2) below is provided with the function button (3) and the digital keyboard (4) with the electric control cabinet (1) electric connection, the digital keyboard (4) below is provided with the switch button (5) with the electric control cabinet (1) electric connection, the electric control cabinet (1) side electric connection has the bee buzz alarm (13), the electric control cabinet (1) bottom electric connection has three composite cable (8), three composite cable (8) below are electrically connected with temperature detection sensor (9), pressure detection module (10) and smoke detection sensor module (11) respectively.

2. The thermal runaway alarm device for lithium battery according to claim 1, characterized in that: The electric control cabinet (1) side electric connection has wireless communication module (14), the communication frequency of wireless communication module (14) is adapted to user remote control end.

3. The thermal runaway warning device for lithium battery according to claim 1, characterized in that: The pressure detection module (10) includes a pressure sensor (1001) electrically connected to the composite cable (8), a rectangular parallelepiped-shaped fixing frame (1002) is arranged below the pressure sensor (1001), a pressure sensor patch (1003) electrically connected to the pressure sensor (1001) is arranged on the inner bottom of the fixing frame (1002), and a sticky ring (1004) is arranged around the bottom of the fixing frame (1002).

4. The thermal runaway warning device for lithium battery according to claim 1, characterized in that: The smoke detection sensor module (11) includes a smoke detection sensor (1101) electrically connected to the composite cable (8), a ventilation grille (1102) is arranged on the side of the smoke detection sensor (1101), and a sticky block (1103) is arranged at the bottom corners of the smoke detection sensor (1101).

5. The thermal runaway warning device for lithium battery according to claim 1, wherein: The electric control cabinet (1) is plug-in electrically connected to the composite cable (8).

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