Battery charging box with thermal runaway prevention and control function

Abstract

The utility model relates to a battery charging box with a thermal runaway prevention and control function, which comprises a charging box body, the charging box body comprises a first box body, a second box body, a third box body and a control device, the second box body is arranged at the top of the first box body, and the third box body is arranged at the top of the second box body. The control device is arranged at the top of the third box body; a first accommodating cavity is formed in the first box body, and a first smoke sensor, a first temperature sensor and a first gas sensor are fixedly arranged at the top of the first accommodating cavity; a second accommodating cavity is formed in the second box body; a second smoke sensor, a second temperature sensor and a second gas sensor are fixedly arranged at the top of the second accommodating cavity; a third containing cavity is formed in the third box body, and a third smoke sensor, a third temperature sensor and a third gas sensor are fixedly arranged at the top of the third containing cavity. The device has the characteristics of simple structure, convenience in operation, safety and reliability.

Description

Technical Field

[0001] The utility model relates to a battery charging box with a thermal runaway prevention and control function. Background Art

[0002] With the development of lithium-ion battery technology, lithium-ion batteries are widely used in drones. Due to the high energy density and capacity of these batteries, thermal runaway can easily occur during charging, resulting in personal and property losses. Battery charging cabinets play a key role in ensuring the safe, economical, and efficient development of the drone industry. This utility model primarily provides thermal runaway prevention and control functions for battery charging and discharging operations. This utility model relates to a thermal runaway early warning method and fire safety technology for the charging and discharging processes of drone lithium batteries.

[0003] Existing automatic drone battery charging systems primarily utilize the DJI BS60 smart battery box, which includes a charger, cooling system, electronic load, and control panel. Since drone batteries are unprotected during charging, they can be damaged. The invention patent, "A Drone Battery Charging Box," utilizes grooves to provide additional protection for the batteries. Existing drone charging compartments are large, and the fixed charging slots increase bulk and reduce efficiency. The invention patent, "A Drone Battery Automatic Charging Box and Its Operating Method," proposes integrating the charger, electronic load, cooling fan, control panel, battery guide, and indicator light into a single unit, minimizing size. However, this patent lacks the ability to prevent and control safety incidents during drone battery charging. If thermal runaway occurs during charging, it not only affects the normal operation of the drone and electric vehicle, but can also result in casualties and property damage. Therefore, we have addressed this issue by developing a battery charging box with thermal runaway prevention and control capabilities. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main purpose of the present invention is to provide a battery charging box with thermal runaway prevention and control function.

[0005] The technical solution of the utility model is as follows:

[0006] A battery charging box with a thermal runaway prevention and control function includes a charging box body, the charging box body including a first box body, a second box body, a third box body, and a control device, the second box body is fixedly arranged on the top of the first box body, the third box body is fixedly arranged on the top of the second box body, and the control device is fixedly arranged on the top of the third box body, wherein:

[0007] The first housing has a first accommodating cavity inside, a first battery tray is provided at the bottom of the first accommodating cavity, and the first battery tray is used to place batteries to be charged. A first smoke sensor, a first temperature sensor, and a first gas sensor are fixedly provided on the top of the first accommodating cavity. A first mounting hole and a second mounting hole are provided on the rear side wall of the second housing, a first warning fan is fixed in the first mounting hole, and a second warning fan is fixed in the second mounting hole.

[0008] The second housing has a second accommodating cavity inside, a second battery tray is provided at the bottom of the second accommodating cavity, and the second battery tray is used to place batteries to be charged. A second smoke sensor, a second temperature sensor, and a second gas sensor are fixedly provided on the top of the second accommodating cavity. A third mounting hole and a fourth mounting hole are provided on the rear side wall of the second housing, a first early warning fan is fixed in the third mounting hole, and a second early warning fan is fixed in the fourth mounting hole.

[0009] The third housing has a third accommodating cavity inside, a third battery tray is provided at the bottom of the third accommodating cavity, the third battery tray is used to place batteries to be charged, a third smoke sensor, a third temperature sensor, and a third gas sensor are fixedly provided on the top of the third accommodating cavity, and a fifth mounting hole and a sixth mounting hole are provided on the rear side wall of the third housing, a first early warning fan is fixed in the fifth mounting hole, and a second early warning fan is fixed in the sixth mounting hole;

[0010] The control device includes a control housing, a circuit board is fixedly installed inside the control housing, the first smoke sensor, the first temperature sensor, the first gas sensor, the second smoke sensor, the second temperature sensor, the second gas sensor, the third smoke sensor, the third temperature sensor and the third gas sensor are electrically connected to the circuit board respectively, and the front side panel of the control housing is provided with a touch screen, which is electrically connected to the circuit board.

[0011] A first fire extinguishing layer is fixedly provided on the left side wall of the first accommodating cavity, a second fire extinguishing layer is fixedly provided on the right side wall of the first accommodating cavity, and a third fire extinguishing layer is fixedly provided on the top side wall of the first accommodating cavity.

[0012] A fourth fire extinguishing layer is fixedly provided on the left side wall of the second accommodating cavity, a fifth fire extinguishing layer is fixedly provided on the right side wall of the second accommodating cavity, and a sixth fire extinguishing layer is fixedly provided on the top side wall of the second accommodating cavity.

[0013] A seventh fire extinguishing layer is fixedly provided on the left side wall of the third accommodating cavity, an eighth fire extinguishing layer is fixedly provided on the right side wall of the third accommodating cavity, and a ninth fire extinguishing layer is fixedly provided on the top side wall of the third accommodating cavity.

[0014] A first push-pull protrusion is longitudinally fixedly provided on the left side wall of the first battery tray, and a first guide groove is longitudinally provided on the bottom of the left side wall of the first accommodating cavity, and the first push-pull protrusion slides back and forth in the first guide groove; a second push-pull protrusion is longitudinally fixedly provided on the right side wall of the first battery tray, and a second guide groove is longitudinally provided on the bottom of the right side wall of the first accommodating cavity, and the second push-pull protrusion slides back and forth in the second guide groove; the first battery tray is pulled out of or pushed into the first accommodating cavity through the cooperation between the first push-pull protrusion and the first guide groove, and the cooperation between the second push-pull protrusion and the second guide groove.

[0015] The front side of the first box body is designed to be open, and a first box cover is provided on the front side of the first box body, through which the first containing cavity is sealed; the side walls of the first box body are composed of three layers of first fire extinguishing panels, a first aerogel layer and a first stainless steel plate from the inside to the outside, and a first transparent window is provided on the first box cover.

[0016] A third push-pull protrusion is longitudinally fixedly provided on the left side wall of the second battery tray, and a third guide groove is longitudinally provided on the bottom of the left side wall of the second accommodating cavity, and the third push-pull protrusion slides back and forth in the third guide groove; a fourth push-pull protrusion is longitudinally fixedly provided on the right side wall of the second battery tray, and a fourth guide groove is longitudinally provided on the bottom of the right side wall of the second accommodating cavity, and the fourth push-pull protrusion slides back and forth in the fourth guide groove; the second battery tray is pulled out of or pushed into the second accommodating cavity through the cooperation between the third push-pull protrusion and the third guide groove, and the cooperation between the fourth push-pull protrusion and the fourth guide groove.

[0017] The front side of the second box body is designed to be open, and a second box cover is provided on the front side of the second box body, and the second accommodating cavity is sealed by the second box cover;

[0018] The side walls of the second box body are composed of three layers of second fire extinguishing panels, a second aerogel layer and a second stainless steel plate from the inside to the outside, and a second transparent window is provided on the second box cover.

[0019] A fifth push-pull protrusion is longitudinally fixedly provided on the left side wall of the third battery tray, and a fifth guide groove is longitudinally provided on the bottom of the left side wall of the third accommodating cavity, and the fifth push-pull protrusion slides back and forth in the fifth guide groove; a sixth push-pull protrusion is longitudinally fixedly provided on the right side wall of the third battery tray, and a sixth guide groove is longitudinally provided on the bottom of the right side wall of the third accommodating cavity, and the sixth push-pull protrusion slides back and forth in the sixth guide groove; the third battery tray is pulled out of or pushed into the third accommodating cavity through the cooperation between the fifth push-pull protrusion and the fifth guide groove, and the cooperation between the sixth push-pull protrusion and the sixth guide groove.

[0020] The front side of the third box body is designed to be open, and a third box cover is provided on the front side of the third box body, through which the third containing cavity is sealed; the side walls of the third box body are composed of three layers of third fire extinguishing panels, a third aerogel layer and a third stainless steel plate from the inside to the outside, and a third transparent window is provided on the third box cover.

[0021] The present utility model has the following advantages and beneficial effects: an embodiment of the present utility model provides a battery charging box with a thermal runaway prevention and control function, which has a first-level warning function and a second-level warning function. The first-level warning threshold and the second-level warning threshold are manually input through the touch screen. When the battery starts to charge, the first warning fan and the second warning fan are not turned on; when the monitoring data of any one of the first smoke sensor, the first temperature sensor, the first gas sensor, the second smoke sensor, the second temperature sensor, the second gas sensor, the third smoke sensor, the third temperature sensor and the third gas sensor reaches the first-level warning threshold, a first-level warning signal is issued and the charging power supply is automatically cut off, and the corresponding first warning fan is automatically turned on at the same time; when the monitoring data of any one of the first smoke sensor, the first temperature sensor, the first gas sensor, the second smoke sensor, the second temperature sensor, the second gas sensor, the third smoke sensor, the third temperature sensor and the third gas sensor reaches the second-level warning threshold, a second-level warning signal is issued, and the corresponding second warning fan is automatically turned on, thereby achieving the purpose of linkage warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a battery charging box with thermal runaway prevention and control function provided in one embodiment of the utility model in one direction.

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a battery charging box with thermal runaway prevention and control function provided by an embodiment of the present invention, with the first box cover, the second box cover, and the third box cover removed, in one direction.

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the battery charging box with thermal runaway prevention and control function provided by an embodiment of the present invention from another direction.

[0025] Figure 4 A schematic diagram of the three-dimensional structure of a battery charging box with thermal runaway prevention and control function provided by an embodiment of the present invention, with the first box cover, the second box cover, and the third box cover removed, viewed from another direction.

[0026] Figure 5 A schematic diagram of the three-dimensional structure of the first box body, the second box body and the third box body provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. 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 present invention.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 5 As shown: A battery charging box with a thermal runaway prevention and control function according to an embodiment of the present invention includes a charging box body 100, which includes a first box body 110, a second box body 120, a third box body 130, and a control device 140. The second box body 120 is fixedly arranged on the top of the first box body 110, the third box body 130 is fixedly arranged on the top of the second box body 120, and the control device 140 is fixedly arranged on the top of the third box body 130, wherein:

[0032] The first housing 110 has a first accommodating cavity 111 therein, a first battery tray 112 is provided at the bottom of the first accommodating cavity 111, the first battery tray 112 is used to place the battery 200 to be charged, a first smoke sensor 113, a first temperature sensor 114 and a first gas sensor 115 are fixedly provided on the top of the first accommodating cavity 111, a first mounting hole (not shown in the figure) and a second mounting hole (not shown in the figure) are provided on the rear side wall of the first housing 110, a first early warning fan 116 is fixedly provided in the first mounting hole, and a second early warning fan 126 is fixedly provided in the second mounting hole; wherein the first gas sensor 115 is one or both or more of an H2 sensor, a CO sensor, a CO2 sensor or an electrolyte sensor;

[0033] The second housing 120 has a second accommodating cavity 121 therein, a second battery tray 122 is provided at the bottom of the second accommodating cavity 121, the second battery tray 122 is used to place batteries to be charged, a second smoke sensor 123, a second temperature sensor 124 and a second gas sensor 125 are fixedly provided on the top of the second accommodating cavity 121, and a third mounting hole (not shown in the figure) and a fourth mounting hole (not shown in the figure) are provided on the rear side wall of the second housing 120, a first early warning fan 116 is fixedly provided in the third mounting hole, and a second early warning fan 126 is fixedly provided in the fourth mounting hole; wherein the second gas sensor 125 is one or two or more of an H2 sensor, a CO sensor, a CO2 sensor or an electrolyte sensor;

[0034] The third housing 130 has a third accommodating cavity 131 therein, a third battery tray 132 is provided at the bottom of the third accommodating cavity 131, the third battery tray 132 is used to place batteries to be charged, a third smoke sensor 133, a third temperature sensor 134 and a third gas sensor 135 are fixedly provided on the top of the third accommodating cavity 130, a fifth mounting hole (not shown in the figure) and a sixth mounting hole (not shown in the figure) are provided on the rear side wall of the third housing 130, a first early warning fan 116 is provided in the fifth mounting hole, and a second early warning fan 126 is fixedly provided in the sixth mounting hole; wherein the third gas sensor 135 is one or two or more of an H2 sensor, a CO sensor, a CO2 sensor or an electrolyte sensor;

[0035] The control device 140 includes a control housing 141, and a circuit board (not shown in the figure) is fixedly installed inside the control housing 141. The first smoke sensor 113, the first temperature sensor 114, the first gas sensor 115, the second smoke sensor 123, the second temperature sensor 124, the second gas sensor 125, the third smoke sensor 133, the third temperature sensor 134 and the third gas sensor 135 are respectively electrically connected to the circuit board. The front side panel of the control housing 141 is provided with a touch screen 142, and the touch screen 142 is electrically connected to the circuit board.

[0036] In the present invention, the control device 140 has a first-level warning function and a second-level warning function, and the first-level warning threshold and the second-level warning threshold are manually input through the touch screen 142. When the battery starts charging, the first warning fan 116 and the second warning fan 126 are not turned on; when the monitoring data of any one of the first smoke sensor 113, the first temperature sensor 114, the first gas sensor 115, the second smoke sensor 123, the second temperature sensor 124, the second gas sensor 125, the third smoke sensor 133, the third temperature sensor 134 and the third gas sensor 135 reaches the first-level warning threshold, a first-level warning signal is issued and the charging power supply is automatically cut off, and the corresponding first warning fan 116 is automatically turned on. That is: when the monitoring data of any one of the first smoke sensor 113, the first temperature sensor 114 and the first gas sensor 115 in the first box 110 reaches the first-level warning threshold, a first-level warning signal is issued and the charging power supply is automatically cut off, and the first warning fan 116 in the first box 110 is automatically turned on;

[0037] When the monitoring data of any one of the second smoke sensor 123, the second temperature sensor 124, and the second gas sensor 125 in the second box 120 reaches the first-level warning threshold, a first-level warning signal is issued and the charging power supply is automatically cut off, and the first warning fan 116 in the second box 110 is automatically turned on;

[0038] When the monitoring data of any one of the third smoke sensor 133, the third temperature sensor 134, and the third gas sensor 135 in the third box 130 reaches the first-level warning threshold, a first-level warning signal is issued and the charging power supply is automatically cut off, and the first warning fan 116 in the third box 130 is automatically turned on;

[0039] When the monitoring data of any one of the first smoke sensor 113, the first temperature sensor 114, the first gas sensor 115, the second smoke sensor 123, the second temperature sensor 124, the second gas sensor 125, the third smoke sensor 133, the third temperature sensor 134 and the third gas sensor 135 reaches the secondary warning threshold, a secondary warning signal is issued, and the corresponding second warning fan 126 is automatically turned on, so as to achieve the purpose of linkage warning, that is: when the monitoring data of any one of the first smoke sensor 113, the first temperature sensor 114 and the first gas sensor 115 inside the first box 110 reaches the secondary warning threshold, a secondary warning signal is issued and the charging power supply is automatically cut off, and the second warning fan 126 in the first box 110 is automatically turned on;

[0040] When the monitoring data of any one of the second smoke sensor 123, the second temperature sensor 124, and the second gas sensor 125 in the second box 120 reaches the second warning threshold, a second warning signal is issued and the charging power supply is automatically cut off, and the second warning fan 126 in the second box 110 is automatically turned on;

[0041] When the monitoring data of any one of the third smoke sensor 133, the third temperature sensor 134, and the third gas sensor 135 inside the third box 130 reaches the first-level warning threshold, a second-level warning signal is issued and the charging power supply is automatically cut off, and the second warning fan 126 in the third box 130 is automatically turned on.

[0042] A first fire extinguishing layer 117 is fixedly installed on the left side wall of the first accommodating cavity 111, a second fire extinguishing layer (not shown) is fixedly installed on the right side wall of the first accommodating cavity 111, and a third fire extinguishing layer 118 is fixedly installed on the rear side wall of the first accommodating cavity 111 below the first mounting hole. The first fire extinguishing layer 117, the second fire extinguishing layer, and the third fire extinguishing layer 118 are all made of silicon dioxide.

[0043] A fourth fire extinguishing layer 127 is fixedly installed on the left side wall of the second accommodating cavity 121, a fifth fire extinguishing layer (not shown) is fixedly installed on the right side wall of the second accommodating cavity 121, and a sixth fire extinguishing layer 128 is fixedly installed on the rear side wall of the second accommodating cavity 121 below the second mounting hole. The fourth fire extinguishing layer 127, the fifth fire extinguishing layer, and the sixth fire extinguishing layer 128 are all made of silicon dioxide.

[0044] A seventh fire extinguishing layer 137 is fixedly installed on the left side wall of the third accommodating cavity 131, an eighth fire extinguishing layer (not shown) is fixedly installed on the right side wall of the third accommodating cavity 131, and a ninth fire extinguishing layer 138 is fixedly installed on the rear side wall of the third accommodating cavity 131 below the third mounting hole. The seventh fire extinguishing layer 137, the eighth fire extinguishing layer, and the ninth fire extinguishing layer 138 are all made of silicon dioxide.

[0045] The left side wall of the first battery tray 112 is longitudinally fixedly provided with a first push-pull protrusion 151, and the bottom of the left side wall of the first accommodating cavity 111 is longitudinally provided with a first guide slot (not shown in the figure), and the first push-pull protrusion 151 slides back and forth in the first guide slot; the right side wall of the first battery tray 112 is longitudinally fixedly provided with a second push-pull protrusion 152, and the bottom of the right side wall of the first accommodating cavity 111 is longitudinally provided with a second guide slot (not shown in the figure), and the second push-pull protrusion 152 slides back and forth in the second guide slot; the first battery tray 112 is pulled out of or pushed into the first accommodating cavity 111 through the cooperation of the first push-pull protrusion 151 and the first guide slot and the cooperation of the second push-pull protrusion 152 and the second guide slot, that is, the first battery tray 112 can be quickly pulled out or pushed into the first accommodating cavity 111 of the first box body 110, so as to be used for quickly placing or taking out lithium batteries on the first battery tray 112 in the first box body 110, which has the characteristics of convenient and quick operation.

[0046] The front side of the first box body 110 is designed to be open. A first box cover 153 is provided on the front side of the first box body 110 to seal the first accommodating cavity 111.

[0047] The side walls of the first box body 110 are composed of three layers of first fire extinguishing panels (not shown in the figure), a first aerogel layer and a first stainless steel plate from the inside to the outside. A first transparent window 154 is provided on the first box cover 153. The first outer shell of the first fire extinguishing panel is made of paraffin and is filled with fire extinguishing material. When the lithium battery in the first box body 110 thermally runs away and catches fire, the first outer shell of the first fire extinguishing panel melts when encountering the high temperature of the flame and releases the fire extinguishing material therein. The fire extinguishing material submerges the burning lithium battery and extinguishes the flame, thereby achieving the purpose of extinguishing the fire.

[0048] The left side wall of the second battery tray 122 is longitudinally fixedly provided with a third push-pull protrusion 155, and the bottom of the left side wall of the second accommodating cavity 121 is longitudinally provided with a third guide slot (not shown in the figure), and the third push-pull protrusion 155 slides back and forth in the third guide slot; the right side wall of the second battery tray 122 is longitudinally fixedly provided with a fourth push-pull protrusion 156, and the bottom of the right side wall of the second accommodating cavity 121 is longitudinally provided with a fourth guide slot (not shown in the figure), and the fourth push-pull protrusion 156 slides back and forth in the fourth guide slot; the second battery tray 122 is pulled out or pushed into the second accommodating cavity 121 through the cooperation of the third push-pull protrusion 155 and the third guide slot and the cooperation of the fourth push-pull protrusion 156 and the fourth guide slot, that is, the second battery tray 122 can be quickly pulled out or pushed into the second accommodating cavity 121 of the second box body 120, so that the lithium battery can be quickly placed in or taken out of the second battery tray 122 in the second box body 120, which has the characteristics of convenient and quick operation.

[0049] The front side of the second box body 120 is designed to be open. A second box cover 157 is provided on the front side of the second box body 120 to seal the second accommodating cavity 121.

[0050] The side walls of the second box body 120 are composed of three layers of second fire extinguishing panels (not shown in the figure), a second aerogel layer and a second stainless steel plate from the inside to the outside. A second transparent window 158 is provided on the second box cover 157. The second outer shell of the second fire extinguishing panel is made of paraffin and is filled with fire extinguishing material. When the lithium battery in the second box body 120 thermally runs away and catches fire, the second outer shell of the second fire extinguishing panel melts when encountering the high temperature of the flame and releases the fire extinguishing material therein. The fire extinguishing material submerges the burning lithium battery and extinguishes the flame, thereby achieving the purpose of extinguishing the fire.

[0051] A fifth push-pull protrusion 159 is longitudinally fixedly provided on the left side wall of the third battery tray 132, and a fifth guide slot (not shown in the figure) is longitudinally provided on the bottom of the left side wall of the third accommodating cavity 131, and the fifth push-pull protrusion 159 slides back and forth in the fifth guide slot; a sixth push-pull protrusion 160 is longitudinally fixedly provided on the right side wall of the third battery tray 132, and a sixth guide slot (not shown in the figure) is longitudinally provided on the bottom of the right side wall of the third accommodating cavity, and the sixth push-pull protrusion 160 slides back and forth in the sixth guide slot; the third battery tray 132 is pulled out of or pushed into the third accommodating cavity 131 through the cooperation of the fifth push-pull protrusion 159 and the fifth guide slot, and the cooperation of the sixth push-pull protrusion 160 and the sixth guide slot, that is, the third battery tray 132 can be quickly pulled out of or pushed into the third accommodating cavity 131 of the third box body 130, so that lithium batteries can be quickly placed in or taken out of the third battery tray 132 in the third box body 130, which has the characteristics of convenient and quick operation.

[0052] The front side of the third box body 130 is designed to be open. A third box cover 161 is provided on the front side of the third box body 130 to seal the third accommodating cavity 131.

[0053] The side walls of the third box body 130 are composed, from the inside to the outside, of three layers of third fire extinguishing panels (not shown in the figure), a third aerogel layer, and a third stainless steel plate. A third transparent window 162 is provided on the third box cover 161. The third outer shell of the third fire extinguishing panel is made of paraffin and is filled with fire extinguishing material. When the lithium battery in the third box body 130 thermally runs away and catches fire, the third outer shell of the third fire extinguishing panel melts when it encounters the high temperature of the flame and releases the fire extinguishing material therein. The fire extinguishing material submerges the burning lithium battery and extinguishes the flame, thereby achieving the purpose of extinguishing the fire.

[0054] In the present invention, the first, second, and third fire extinguishing panels are all made of paraffin wax. The fire extinguishing principle of the present invention is as follows: when the lithium battery 200 in the first housing 110 ignites due to thermal runaway, the flame temperature of the thermally runaway lithium battery will exceed the ignition point of the first fire extinguishing panel on the inner wall of the first housing 110. The first outer shell of the first fire extinguishing panel then melts, releasing the fire extinguishing material from the first outer shell to cover the thermally runaway lithium battery, thereby extinguishing the fire. The fire extinguishing principle of the second and third housings 120 and 130 is the same as that of the first housing 110. The fire extinguishing material is also made of silica.

[0055] Finally, it should be noted that the embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery charging box with thermal runaway prevention and control function, characterized by: The charging box includes a first box, a second box, a third box, and a control device. The second box is fixedly arranged on the top of the first box, the third box is fixedly arranged on the top of the second box, and the control device is fixedly arranged on the top of the third box, wherein: The first housing has a first accommodating cavity inside, a first battery tray is provided at the bottom of the first accommodating cavity, and the first battery tray is used to place batteries to be charged. A first smoke sensor, a first temperature sensor, and a first gas sensor are fixedly provided on the top of the first accommodating cavity. A first mounting hole and a second mounting hole are provided on the rear side wall of the second housing, a first warning fan is fixed in the first mounting hole, and a second warning fan is fixed in the second mounting hole. The second housing has a second accommodating cavity inside, a second battery tray is provided at the bottom of the second accommodating cavity, and the second battery tray is used to place batteries to be charged. A second smoke sensor, a second temperature sensor, and a second gas sensor are fixedly provided on the top of the second accommodating cavity. A third mounting hole and a fourth mounting hole are provided on the rear side wall of the second housing, a first early warning fan is fixed in the third mounting hole, and a second early warning fan is fixed in the fourth mounting hole. The third housing has a third accommodating cavity inside, a third battery tray is provided at the bottom of the third accommodating cavity, the third battery tray is used to place batteries to be charged, a third smoke sensor, a third temperature sensor, and a third gas sensor are fixedly provided on the top of the third accommodating cavity, and a fifth mounting hole and a sixth mounting hole are provided on the rear side wall of the third housing, a first early warning fan is fixed in the fifth mounting hole, and a second early warning fan is fixed in the sixth mounting hole; The control device includes a control housing, a circuit board is fixedly installed inside the control housing, the first smoke sensor, the first temperature sensor, the first gas sensor, the second smoke sensor, the second temperature sensor, the second gas sensor, the third smoke sensor, the third temperature sensor and the third gas sensor are electrically connected to the circuit board respectively, and the front side panel of the control housing is provided with a touch screen, which is electrically connected to the circuit board.

2. The battery charging box with thermal runaway prevention and control function according to claim 1, characterized in that: A first fire extinguishing layer is fixedly provided on the left side wall of the first accommodating cavity, a second fire extinguishing layer is fixedly provided on the right side wall of the first accommodating cavity, and a third fire extinguishing layer is fixedly provided on the top side wall of the first accommodating cavity.

3. The battery charging box with thermal runaway prevention and control function according to claim 1, characterized in that: A fourth fire extinguishing layer is fixedly provided on the left side wall of the second accommodating cavity, a fifth fire extinguishing layer is fixedly provided on the right side wall of the second accommodating cavity, and a sixth fire extinguishing layer is fixedly provided on the top side wall of the second accommodating cavity.

4. The battery charging box with thermal runaway prevention and control function according to claim 1, characterized in that: A seventh fire extinguishing layer is fixedly provided on the left side wall of the third accommodating cavity, an eighth fire extinguishing layer is fixedly provided on the right side wall of the third accommodating cavity, and a ninth fire extinguishing layer is fixedly provided on the top side wall of the third accommodating cavity.

5. The battery charging box with thermal runaway prevention and control function according to claim 1, characterized in that: A first push-pull protrusion is fixedly provided longitudinally on the left side wall of the first battery tray, and a first guide slot is longitudinally provided on the bottom of the left side wall of the first accommodating cavity, and the first push-pull protrusion slides back and forth in the first guide slot; A second push-pull protrusion is fixedly provided longitudinally on the right side wall of the first battery tray, and a second guide slot is longitudinally provided on the bottom of the right side wall of the first accommodating cavity, and the second push-pull protrusion slides back and forth in the second guide slot; The first battery tray is pulled out of or pushed into the first accommodating cavity by the cooperation between the first push-pull protrusion and the first guide groove and the cooperation between the second push-pull protrusion and the second guide groove.

6. The battery charging box with thermal runaway prevention and control function according to claim 5, characterized in that: The front side of the first box body is designed to be open, and a first box cover is provided on the front side of the first box body, and the first accommodating cavity is sealed by the first box cover; The side wall of the first box body is composed of three layers of first fire extinguishing panels, a first aerogel layer and a first stainless steel plate from the inside to the outside, and the first box cover is provided with a first transparent window.

7. The battery charging box with thermal runaway prevention and control function according to claim 1, characterized in that: A third push-pull protrusion is fixedly provided longitudinally on the left side wall of the second battery tray, and a third guide slot is longitudinally provided on the bottom of the left side wall of the second accommodating cavity, and the third push-pull protrusion slides back and forth in the third guide slot; A fourth push-pull protrusion is fixedly provided longitudinally on the right side wall of the second battery tray, and a fourth guide slot is longitudinally provided on the bottom of the right side wall of the second accommodating cavity, and the fourth push-pull protrusion slides back and forth in the fourth guide slot; The second battery tray is pulled out of or pushed into the second accommodating cavity by the cooperation between the third push-pull protrusion and the third guide slot and the cooperation between the fourth push-pull protrusion and the fourth guide slot.

8. The battery charging box with thermal runaway prevention and control function according to claim 7, characterized in that: The front side of the second box body is designed to be open, and a second box cover is provided on the front side of the second box body, and the second accommodating cavity is sealed by the second box cover; The side walls of the second box body are composed of three layers of second fire extinguishing panels, a second aerogel layer and a second stainless steel plate from the inside to the outside, and a second transparent window is provided on the second box cover.

9. The battery charging box with thermal runaway prevention and control function according to claim 1, characterized in that: A fifth push-pull protrusion is fixedly provided longitudinally on the left side wall of the third battery tray, and a fifth guide slot is longitudinally provided on the bottom of the left side wall of the third accommodating cavity, and the fifth push-pull protrusion slides back and forth in the fifth guide slot; A sixth push-pull protrusion is fixedly provided longitudinally on the right side wall of the third battery tray, and a sixth guide slot is longitudinally provided on the bottom of the right side wall of the third accommodating cavity, and the sixth push-pull protrusion slides back and forth in the sixth guide slot; The third battery tray is pulled out of or pushed into the third accommodating cavity by the cooperation between the fifth push-pull protrusion and the fifth guide slot and the cooperation between the sixth push-pull protrusion and the sixth guide slot.

10. The battery charging box with thermal runaway prevention and control function according to claim 9, characterized in that: The front side of the third box body is designed to be open, and a third box cover is provided on the front side of the third box body, and the third accommodating cavity is sealed by the third box cover; The side walls of the third box body are composed of three layers of third fire extinguishing panels, a third aerogel layer and a third stainless steel plate from the inside to the outside, and a third transparent window is provided on the third box cover.

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