Emergency device capable of automatically heating lithium battery in low-temperature environment

Abstract

The utility model relates to the technical field of emergency devices, in particular to an emergency device capable of automatically heating a lithium battery in a low-temperature environment. Comprising an emergency box body and a box cover installed at the top of the emergency box body, a temperature sensor is arranged at the bottom of the box cover, a bottom plate is arranged in the emergency box body, baffles are arranged on the periphery of the upper end of the bottom plate, a battery bin with an upward opening is formed between the bottom plate and the baffles, and gaps are reserved between the baffles and the inner wall of the emergency box body to form hot air channels. A plurality of ventilation openings are uniformly formed in the baffle plate; the temperature of the lithium battery is detected in real time through the temperature sensor, the draught fan and the electric heating wire are controlled to work, meanwhile, under the action of the elastic column and the limiting column, heat generated by the electric heating wire enters the battery bin through the hot air channel to heat the lithium battery in all directions, and the heating uniformity of the lithium battery is guaranteed; and the hot air circularly enters the heating chamber to be recycled after heating the lithium battery in the battery bin, so that the heating speed of the lithium battery can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency devices, in particular to an emergency device capable of automatically heating a lithium battery in a low-temperature environment. Background Art

[0002] An emergency device is a tool or device that can help people check, alarm, escape, etc. in an emergency. It is a backup device for the machine. When the machine is operating normally, the emergency device is in a waiting state. When the running machine suddenly encounters a power supply system failure (power outage, phase loss, fire), the emergency device will automatically switch to work and take over all control of the machine, providing enough time for machine failure repair, escape, etc. Lithium batteries are often used as power sources for emergency devices because of their high energy, long service life, high rated voltage, and high power tolerance.

[0003] However, the electrolyte used in lithium batteries is an organic liquid mixture, which will become viscous or even coagulate at low temperatures. Therefore, if the lithium battery is operated in a low temperature environment for a long time, it will cause serious damage to the lithium battery, and it is easy to cause damage to the power supply of the emergency device, resulting in malfunction. The lithium battery heating devices currently on the market usually heat the lithium battery directly through the heating structure during use, which is easy to cause uneven temperature inside and outside the lithium battery, and generate a temperature gradient inside the lithium battery, resulting in a reduction in the service life of the lithium battery. Therefore, the utility model proposes an emergency device that can automatically heat the lithium battery in a low temperature environment. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an emergency device which can automatically heat a lithium battery in a low temperature environment, so as to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above technical objectives, the utility model proposes the following technical solutions: an emergency device that can automatically heat a lithium battery in a low temperature environment, comprising an emergency box and a box cover installed on the top of the emergency box, a temperature sensor is provided at the bottom of the box cover, a bottom plate is provided inside the emergency box, baffles are provided around the upper end of the bottom plate, a battery compartment with an opening upward is formed between the bottom plate and the baffle, a gap is left between the baffle and the inner wall of the emergency box to form a hot air channel, and a number of vents are evenly provided on the baffle, a gap is left between the bottom plate and the bottom of the emergency box to form a heating chamber, a heating chamber and an air inlet chamber are formed in the heating chamber through a partition, a fan is installed on the partition, an electric heating wire is provided in the heating chamber, an air inlet is provided on the side wall of the emergency box and on one side of the air inlet chamber, a filter is installed on the air inlet, the heating chamber is connected to the hot air of the hot air channel through the inlet, and the air inlet chamber is connected to the battery compartment through the outlet.

[0006] Furthermore, a heat-insulating layer is provided on the periphery of the baffle, and the vents penetrate the heat-insulating layer and the baffle.

[0007] Furthermore, a plurality of elastic columns are evenly arranged on the bottom plate and in the battery compartment.

[0008] Furthermore, sealing gaskets are provided around the bottom of the box cover, a plurality of limit columns are provided on the diagonal lines and in the middle of the bottom of the box cover, and the four corners of the top of the box cover are connected to the emergency box body by bolts.

[0009] Furthermore, a handle is provided on the top of the box cover.

[0010] Compared with the prior art, the beneficial effects produced by the utility model are: the utility model has a novel structure, ingenious conception, simple and convenient operation, and has the following advantages compared with the prior art: the utility model detects the temperature of the lithium battery in real time through a temperature sensor, controls the operation of the fan and the electric heating wire, and at the same time, under the action of the elastic column and the limit column, the heat generated by the electric heating wire enters the battery compartment through the hot air channel to heat the lithium battery in all directions, thereby ensuring the uniformity of heating of the lithium battery. The interaction between the elastic column and the limit column can also firmly fix the lithium battery in the battery compartment, thereby improving its stability during transportation; the hot air heats the lithium battery in the battery compartment and then circulates into the heating chamber for recycling and reuse, thereby increasing the heating speed of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a side structural schematic diagram of the utility model;

[0013] Figure 3 This utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0014] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0015] In the figure, 1. emergency box; 2. box cover; 3. temperature sensor; 4. bottom plate; 5. baffle; 6. battery compartment; 7. hot air channel; 8. vent; 9. partition; 10. heating chamber; 11. air inlet chamber; 12. fan; 13. electric heating wire; 14. air inlet; 15. filter; 16. hot air inlet; 17. air outlet; 18. insulation layer; 19. elastic column; 20. sealing gasket; 21. limit column; 22. handle. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0017] like Figure 1-4 As shown, the utility model provides an emergency device that can automatically heat a lithium battery in a low temperature environment, including an emergency box body 1 and a box cover 2 installed on the top of the emergency box body 1, a temperature sensor 3 is provided at the bottom of the box cover 2, a bottom plate 4 is provided inside the emergency box body 1, baffles 5 are provided around the upper end of the bottom plate 4, a battery compartment 6 with an opening upward is formed between the bottom plate 4 and the baffle 5, the top of the baffle 5 is fixedly connected to the top of the emergency box body 1, a gap is left between the baffle 5 and the inner wall of the emergency box body 1 to form a hot air channel 7, and a plurality of vents 8 are evenly opened on the baffle 5, a gap is left between the bottom plate 4 and the bottom of the emergency box body 1 to form a heating chamber, and a heating chamber is formed by a partition 9 in the heating chamber. A heat chamber 10 and an air inlet chamber 11, a fan 12 is installed on the partition 9, an electric heating wire 13 is arranged in the heating chamber 10, an air inlet 14 is opened on the side wall of the emergency box 1 and located on one side of the air inlet chamber 11, a filter 15 is installed on the air inlet 14, the heating chamber 10 is connected with the hot air channel 7 through a hot air inlet 16, the hot air inlet 16 is arranged on the bottom plate 4 and away from the side of the air inlet 14, the air inlet chamber 11 is connected with the battery compartment 6 through an air outlet 17, the air outlet 17 is opened on the bottom plate 4 and located at the top of the air inlet chamber, a controller is also installed in the air inlet chamber 11, and the temperature sensor 3, the fan 12 and the electric heating wire 13 are all electrically connected to the controller.

[0018] like Figure 1-4As shown, the lithium battery can be placed in the battery compartment 6 through the opening of the battery compartment 6, and the battery compartment 6 can be limited by the box cover 2. After the box cover 2 is closed, the temperature sensor 3 contacts the top of the lithium battery to detect the temperature of the lithium battery in real time and transmit the temperature signal to the controller. If the detected temperature of the lithium battery is too low, the controller controls the fan 12 and the electric heating wire 13 to work, and the fan 12 draws the outdoor wind into the heating chamber 10 along the air inlet 14. The filter 15 can filter out impurities in the outdoor wind. The heat generated by the electric heating wire 13 when it is energized heats it to form hot air. The hot air enters the hot air channel 7 through the hot air inlet 16, and then blows the hot air into the battery compartment 6 through the vent 8, blowing the four sides of the lithium battery at the same time Sending hot air for heating can achieve uniform heating of the lithium battery, avoid the lithium battery working in a low temperature environment for a long time, cause serious loss of the electrolyte of the lithium battery, and shorten the service life of the lithium battery; after the hot air exchanges heat in the battery compartment 6, it enters the air inlet chamber 11 along the air outlet 17, and is then drawn into the heating chamber 10 by the fan 12 for heating, and the wind after the heat exchange is recovered. Since the hot air after the heat exchange with the lithium battery will carry a certain amount of heat, the temperature is higher than that of the outdoor wind. By recycling and utilizing it, the temperature of the hot air entering the battery compartment 6 can be increased. After being heated in the heating chamber 10, it enters the battery compartment 6 to heat the lithium battery again. This cycle is repeated to increase the heating speed of the lithium battery.

[0019] The outer periphery of the baffle 5 is provided with a heat-insulating layer 18 , and the vent 8 passes through the heat-insulating layer 18 and the baffle 5 .

[0020] like Figure 3 As shown, the thermal insulation layer 18 can prevent the heat loss in the battery compartment 6 and improve the thermal insulation effect.

[0021] A plurality of elastic columns 19 are evenly disposed on the bottom plate 4 and inside the battery compartment 6 .

[0022] like Figure 3 As shown, the elastic column 19 is used to support the lithium battery, so that a gap is left between the bottom of the lithium battery and the bottom plate 4, and hot air can flow in the gap. On the one hand, it can heat the bottom of the lithium battery and improve the heating effect of the lithium battery. On the other hand, it is convenient for the hot air to be discharged from the air outlet 17 to the air inlet chamber 11.

[0023] Sealing pads 20 are arranged around the bottom of the box cover 2, and a plurality of limit columns 21 are arranged on the diagonal lines and in the middle of the bottom of the box cover 2. The four corners of the top of the box cover 2 are connected to the emergency box body 1 by bolts.

[0024] like Figure 3As shown, the sealing gasket 20 is used to improve the overall sealing of the battery compartment 6 to prevent hot air leakage. After the box cover 2 is covered on the emergency box body 1, the bottom of the limiting column 21 contacts the top of the lithium battery. As the box cover 2 continues to be pressed down, the limiting column 21 will drive the lithium battery to move downward until the sealing gasket 20 is in close contact with the emergency box body 1. The box cover 2 is fixed to the emergency box body 1 by bolts. Under the action of the limiting column 21 and the elastic column 19, the lithium battery is tightly stuck in the battery compartment 6, which can prevent the lithium battery from shaking in the battery compartment 6 during transportation, affecting the service life of the lithium battery. At the same time, the limiting column 21 contacts the top of the lithium battery to reduce the contact area between the top of the lithium battery and the box cover 2. Hot air can flow through the gap between the box cover 2 and the top of the lithium battery, which is convenient for heating the top of the lithium battery.

[0025] A handle 22 is provided on the top of the box cover 2 .

[0026] like Figure 1 As shown, the handle 22 can be used to conveniently open the box cover 2 and take out the lithium battery in the battery compartment 6.

[0027] Principle of use: When in use, first place the lithium battery in the battery compartment 6, and cover the box cover 2, and fix it by bolts. The temperature sensor 3 just contacts the top of the lithium battery to detect the temperature of the lithium battery in real time. When the temperature sensor 3 detects that the temperature of the lithium battery is lower than the set threshold, the fan 12 and the electric heating wire 13 work. The fan 12 draws the outdoor wind along the air inlet 14 into the heating chamber 10. The heat generated by the electric heating wire 13 after being energized heats it to form hot wind. The hot wind enters the hot air channel 7 through the hot air inlet 16, and then blows the hot wind into the battery compartment 6 through the vent 8. The four sides, top and bottom of the lithium battery are blown with hot air at the same time to heat the lithium battery, so as to achieve all-round and simultaneous heating of the lithium battery and ensure uniform heating of the lithium battery. After the hot air exchanges heat in the battery compartment 6, it enters the air inlet chamber 11 along the air outlet 17, and then is drawn into the heating chamber 10 by the fan 12 for heating. The wind after heat exchange is recovered to increase the heating speed of the lithium battery.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An emergency device that can automatically heat lithium batteries in a low temperature environment, characterized in that: The invention comprises an emergency box (1) and a box cover (2) installed on the top of the emergency box (1), wherein a temperature sensor (3) is provided at the bottom of the box cover (2), a bottom plate (4) is provided inside the emergency box (1), baffles (5) are provided around the upper end of the bottom plate (4), a battery compartment (6) with an opening facing upward is formed between the bottom plate (4) and the baffles (5), a gap is left between the baffles (5) and the inner wall of the emergency box (1) to form a hot air channel (7), and a plurality of ventilation holes (8) are evenly provided on the baffles (5), and a gap is left between the bottom plate (4) and the bottom of the emergency box (1). A heating chamber (10) and an air inlet chamber (11) are formed in the heating chamber through a partition (9), a fan (12) is installed on the partition (9), an electric heating wire (13) is arranged in the heating chamber (10), an air inlet (14) is opened on the side wall of the emergency box (1) and located on one side of the air inlet chamber (11), a filter (15) is installed on the air inlet (14), the heating chamber (10) is connected to the hot air channel (7) through the hot air inlet (16), and the air inlet chamber (11) is connected to the battery compartment (6) through the air outlet (17).

2. The emergency device capable of automatically heating a lithium battery in a low temperature environment according to claim 1, characterized in that: The outer periphery of the baffle (5) is provided with a heat-insulating layer (18), and the vent (8) penetrates the heat-insulating layer (18) and the baffle (5).

3. The emergency device capable of automatically heating a lithium battery in a low temperature environment according to claim 1, characterized in that: A plurality of elastic columns (19) are evenly arranged on the bottom plate (4) and located inside the battery compartment (6).

4. The emergency device capable of automatically heating a lithium battery in a low temperature environment according to claim 3, characterized in that: Sealing pads (20) are provided around the bottom of the box cover (2), a plurality of limit posts (21) are provided on the diagonal lines and in the middle of the bottom of the box cover (2), and the four corners of the top of the box cover (2) are connected to the emergency box body (1) by bolts.

5. The emergency device capable of automatically heating a lithium battery in a low temperature environment according to claim 1, characterized in that: A handle (22) is provided on the top of the box cover (2).

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