Dehumidification device, battery pack system and vehicle

Abstract

The utility model discloses a dehumidification device, a battery pack system and a vehicle. The dehumidification device comprises a first box body, a second box body, a dehumidification pipe, a heating pipe and a thermoelectric refrigerating unit. The dehumidification pipe is arranged in the first box body, the heating pipe is arranged in the second box body, and the air outlet end of the dehumidification pipe is communicated with the air inlet end of the heating pipe. The thermoelectric refrigerating unit comprises a cold end and a hot end, and the cold end is used for conveying cold air into the first box body so as to reduce the temperature of the dehumidification pipe, so that water and air are separated when external air flows into the dehumidification pipe. And the separated gas flows to the heating pipe. The hot end is used for conveying hot air into the second box body, so that the temperature of the heating pipe is increased, and the gas flowing through the heating pipe is heated. The dehumidification device is higher in dehumidification capacity, more energy-saving and environment-friendly in the operation process, and lower in product cost.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a dehumidification device, a battery pack system and a vehicle. Background Art

[0002] In the field of new energy vehicles, the internal space of the battery pack needs to be dehumidified to ensure the stability of the battery pack circuit. In order to increase the dehumidification capacity of the air, the dehumidification devices currently on the market remove moisture from the air before heating the air. The dehumidification device generally includes a dehumidification tube and a heating tube. The air is separated from the water vapor in the dehumidification tube, and the separated gas flows through the heating tube for heating. The dehumidification device needs to be equipped with cooling equipment and heating equipment to cool the dehumidification tube and heat the heating tube respectively. The cooling equipment requires refrigerant to operate, which is not energy-saving and environmentally friendly. In addition, the cooling equipment and heating equipment need to be separately set up, which is costly. Utility Model Content

[0003] The purpose of the present application is to provide a dehumidification device, a battery pack system and a vehicle. The dehumidification device has a stronger dehumidification capacity, is more energy-saving and environmentally friendly during operation, and has a lower product cost.

[0004] The first aspect of the present application provides a dehumidification device, comprising a first box, a second box, a dehumidification pipe, a heating pipe and a thermoelectric cooler. The dehumidification pipe is arranged in the first box, the heating pipe is arranged in the second box, and the air outlet end of the dehumidification pipe is connected to the air inlet end of the heating pipe.

[0005] The thermoelectric cooler includes a cold end and a hot end. The cold end is used to transport cold air into the first box to reduce the temperature of the dehumidification tube so that the water vapor is separated when the external air flows into the dehumidification tube. The separated gas flows to the heating tube. The hot end is used to transport hot air into the second box to increase the temperature of the heating tube to heat the gas flowing through the heating tube.

[0006] The dehumidification device provided in the embodiment of the present application is provided with a dehumidification tube before the heating tube, so that the air is first dehumidified and then heated, so that the air has a higher moisture absorption capacity. The dehumidification device can cool the dehumidification tube and heat the heating tube using a thermoelectric cooler, which is low in cost. The thermoelectric cooler does not require refrigerant during operation, and the energy utilization rate of the thermoelectric cooler is high, so that the dehumidification device can save more energy and the product is more environmentally friendly.

[0007] In some embodiments, the dehumidification device further includes a cold air pipe, the cold end and the first box are connected through the cold air pipe, and the cold air at the cold end is transported to the first box through the cold air pipe. By providing the cold air pipe, it is convenient to arrange the positions of the thermoelectric cooler and the first box. The thermoelectric cooler and the first box are not limited to being provided as an integral unit. The thermoelectric cooler and the first box can be provided separately. By changing the length of the cold air pipe, the thermoelectric cooler and the first box can be installed in more positions.

[0008] In some embodiments, the dehumidification device further includes a hot air pipe, the hot end and the second box are connected through the hot air pipe, and the hot air at the hot end is transported to the second box through the hot air pipe. By providing the hot air pipe, it is convenient to arrange the positions of the thermoelectric cooler and the second box. The thermoelectric cooler and the second box are not limited to being arranged as one body, and the thermoelectric cooler and the second box can be arranged separately. By changing the length of the hot air pipe, the thermoelectric cooler and the second box can be installed in more positions.

[0009] In some embodiments, the cold end is provided with a first opening, the first box is provided with a second opening, the cold end is attached to the outside of the first box, and the first opening and the second opening are opposite. Cold air at the cold end is discharged from the first opening and then enters the first box from the second opening.

[0010] The cold end is directly attached to the first box, and the distance between the cold end and the first box is relatively close. Cold air directly enters the first box from the first opening and the second opening. The distance of cold air transportation is relatively short, and the temperature of the cold air will not increase during transportation. When the cold air enters the first box, it can still maintain a relatively low temperature. In addition, the temperature of the outer wall of the cold end is relatively low. The cold end is attached to the first box, and the first box can be cooled quickly, and the cooling speed of the dehumidification pipe is also faster.

[0011] In some embodiments, the hot end is provided with a third opening, the second box is provided with a fourth opening, the hot end is attached to the outer side of the second box, and the third opening and the fourth opening are opposite. Hot air from the hot end is discharged from the third opening and then enters the second box from the fourth opening.

[0012] The hot end is directly attached to the second box, the distance between the hot end and the second box is relatively close, the hot air directly enters the second box from the third opening and the fourth opening, the distance of hot air transmission is relatively short, the temperature of the hot air will not decrease during the transmission process, and the hot air can still maintain a high temperature when entering the second box. The outer wall of the hot end has a relatively high temperature, and the hot end is attached to the second box, so the high temperature of the hot end can be transferred to the outer wall of the second box, and the outer wall of the second box then transfers the temperature to the second box, so that the temperature of the heating tube rises faster.

[0013] In some embodiments, the dehumidification pipe is provided with a first drain port. By providing the first drain port, when the air and water vapor entering the dehumidification pipe are separated, the separated water can be discharged from the first drain port.

[0014] In some embodiments, the dehumidification device further includes a blower, which is connected to one end of the dehumidification tube. The blower draws external air into the dehumidification tube. By providing the blower, the air outside the dehumidification device and the air inside the dehumidification device can circulate more smoothly.

[0015] The second aspect of the present application provides a battery pack system, comprising a battery pack and the dehumidification device provided in the first aspect of the present application. The battery pack is provided with an air inlet and an air outlet, and the air outlet end of the heating tube is connected to the air inlet.

[0016] In some embodiments, the battery pack system further includes a first temperature sensor, a first humidity sensor and a controller. The first temperature sensor, the first humidity sensor and the thermoelectric cooler are all electrically connected to the controller. The first temperature sensor and the first humidity sensor are disposed in the battery pack.

[0017] The first temperature sensor is used to detect the temperature value in the battery pack and to transmit the temperature value in the battery pack to the controller. The first humidity sensor is used to detect the humidity value in the battery pack and to transmit the humidity value in the battery pack to the controller.

[0018] The controller controls the opening or closing of the thermoelectric cooler according to the temperature value and the humidity value in the battery pack, and controls the opening or closing of the air inlet and the air outlet.

[0019] By setting the first temperature sensor, the first humidity sensor and the controller, the battery pack system can automatically detect the temperature value and the humidity value in the battery pack and determine whether the battery pack needs to be dehumidified.

[0020] In some embodiments, the battery pack system further includes a second temperature sensor and a second humidity sensor. The second temperature sensor and the second humidity sensor are both electrically connected to the controller. The second temperature sensor and the second humidity sensor are disposed outside the battery pack.

[0021] The second temperature sensor is used to detect the temperature value outside the battery pack and to transmit the temperature value outside the battery pack to the controller. The second humidity sensor is used to detect the humidity value outside the battery pack and to transmit the humidity value outside the battery pack to the controller.

[0022] The controller controls the opening or closing of the thermoelectric cooler and the opening or closing of the air inlet and the exhaust port according to the temperature value inside the battery pack, the humidity value inside the battery pack, the temperature value outside the battery pack, and the humidity value outside the battery pack.

[0023] In some embodiments, the controller calculates the condensation water content H inside the battery pack based on the temperature value inside the battery pack, the humidity value inside the battery pack, the temperature value outside the battery pack, and the humidity value outside the battery pack, and compares the condensation water content H with a pre-stored first safety threshold.

[0024] When the condensed water content H is less than the first safety threshold, the thermoelectric cooler, the air inlet and the exhaust port are controlled to be closed. When the condensed water content H is greater than or equal to the first safety threshold, the thermoelectric cooler and the air inlet are controlled to be opened.

[0025] In some embodiments, multiple air inlets are provided, and the multiple air inlets are evenly arranged in the battery pack. By providing multiple air inlets, the heated air can directly enter various areas of the battery pack, and the temperature difference of the air entering various areas of the battery pack is small, so that each area of ​​the battery pack can be well dehumidified.

[0026] In some embodiments, the battery pack system further includes an intake valve and an exhaust valve, the intake valve is arranged at the intake port, the exhaust valve is arranged at the exhaust port, and both the intake valve and the exhaust valve are electrically connected to the controller. The opening or closing of the intake valve and the exhaust valve is controlled to control the opening or closing of the intake port and the exhaust port.

[0027] If the battery pack does not need to be dehumidified, the air inlet valve and the exhaust valve are closed. If the battery pack needs to be dehumidified, the air inlet valve is opened, and the heated air enters the battery pack from the air inlet. At this time, the exhaust valve is closed to prevent the air from being discharged from the exhaust port immediately. After the air has completed dehumidification of the battery pack, the exhaust valve is opened again.

[0028] A third aspect of the present application provides a vehicle, comprising the battery pack system provided in the second aspect of the present application.

[0029] The dehumidification system provided in the embodiment of the present application is provided with a dehumidification tube before the heating tube, and the air is first dehumidified and then heated, so that the air has a higher moisture absorption capacity. The dehumidification device can cool the dehumidification tube and heat the heating tube using a thermoelectric cooler, which is low in cost. The thermoelectric cooler does not require refrigerant during operation, and the energy utilization rate of the thermoelectric cooler is high, so that the dehumidification device can save more energy and the product is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation scheme are briefly introduced below.

[0031] Figure 1 It is a schematic diagram of the dehumidification device provided in an embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of a dehumidification device provided in another embodiment.

[0033] Figure 3 It is a schematic diagram of a dehumidification device provided in another embodiment.

[0034] Figure 4 It is a schematic diagram of the battery pack system provided in an embodiment of the present application.

[0035] Figure 5 is a schematic diagram of a battery pack system provided by another embodiment.

[0036] Explanation of reference numerals: 2000-battery pack system, 1000-dehumidification device, 100-first box, 101-second opening, 102-second drain port, 200-second box, 201-fourth opening, 300-dehumidification pipe, 303-first drain port, 400-heating pipe, 500-thermoelectric cooler, 501-cold end, 502-hot end, 503-first opening, 504-third opening, 600-first pipe, 610-second pipe, 620-third Pipeline, 630-fourth pipeline, 640-fifth pipeline, 650-sixth pipeline, 660-seventh pipeline, 700-cold air pipe, 750-hot air pipe, 760-blower, 800-battery pack, 801-air inlet, 802-exhaust port, 803-housing, 804-battery module, 805-accommodating chamber, 900-inlet valve, 950-exhaust valve, 960-electronic collection and dehumidification management system, 301, 401-inlet end, 302, 402-outlet end. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0038] Please refer to Figure 1 The dehumidification device 1000 provided in the embodiment of the present application includes a first box body 100, a second box body 200, a dehumidification pipe 300, a heating pipe 400 and a thermoelectric cooler 500. The dehumidification pipe 300 is arranged in the first box body 100, the heating pipe 400 is arranged in the second box body 200, and the air outlet end 302 of the dehumidification pipe 300 is connected to the air inlet end 401 of the heating pipe 400.

[0039] The thermoelectric cooler 500 includes a cold end 501 and a hot end 502. The cold end 501 is used to deliver cold air to the first box 100 to reduce the temperature of the dehumidification pipe 300 so that the water vapor is separated when the external air flows into the dehumidification pipe 300. The separated gas flows to the heating pipe 400. The hot end 502 is used to deliver hot air to the second box 200 to increase the temperature of the heating pipe 400 so as to heat the gas flowing through the heating pipe 400.

[0040] Specifically, the dehumidification tube 300 and the heating tube 400 are wavy. In other embodiments, the dehumidification tube 300 and the heating tube 400 can also be set as coils. The air inlet end 301 of the dehumidification tube 300 is connected to the outside of the first box 100, so that the outside air can enter the dehumidification tube 300. The air outlet end 302 of the dehumidification tube 300 is connected to the air inlet end 401 of the heating tube 400, and the gas dehumidified by the dehumidification tube 300 enters the heating tube 400. The air outlet end 302 of the dehumidification tube 300 can be set to be relatively long, extending from the inside of the first box 100 to the outside of the first box 100, and extending to the second box 200 to connect with the air inlet end 401 of the heating tube 400. Alternatively, the air inlet end 401 of the heating tube 400 is relatively long, extending from the inside of the second box body 200 to the outside of the second box body 200 , and extending to the first box body 100 to connect with the air outlet end 302 of the dehumidification tube 300 .

[0041] Finally, the air outlet end 402 of the heating tube 400 is connected to the outside of the second box 200 to discharge the heated air to the outside of the second box 200. When dehumidifying the space to be dehumidified, the dehumidifier 1000 can be placed in the space to be dehumidified, and the heated air can be discharged into the space to be dehumidified. Alternatively, the dehumidifier 1000 can also be placed outside the space to be dehumidified, and the heated air can be transported to the space to be dehumidified through a pipeline.

[0042] For other embodiments, please refer to Figure 1 The dehumidification device 1000 further includes a first pipe 600, and both ends of the first pipe 600 are respectively connected to the air outlet end 302 of the dehumidification pipe 300 and the air inlet end 401 of the heating pipe 400. By providing the first pipe 600 to connect the dehumidification pipe 300 and the heating pipe 400, the assembly of the dehumidification device 1000 is facilitated.

[0043] The basic principle of the thermoelectric cooler 500 is the thermoelectric effect, which refers to the fact that when there is a temperature difference at the contact point of two different materials, an electric potential difference will be generated. This phenomenon is called the Seebeck effect. If a load resistor is added between the two materials, electrical energy can be extracted from the system. If, on the other hand, electrical energy is input into the system, a temperature difference will be generated to form a hot end 502 and a cold end 501.

[0044] Thermoelectric cooler 500 is a device that can generate temperature difference by transmitting electric energy to the system. Compared with the related art, thermoelectric cooler 500 can realize cooling and heating without refrigerant, and the energy utilization rate of thermoelectric cooler 500 is high. Therefore, thermoelectric cooler 500 is more energy-saving and environmentally friendly in the process of cooling dehumidification tube 300 and heating heating tube 400.

[0045] The dehumidification system provided in the embodiment of the present application, by arranging the dehumidification tube 300 before the heating tube 400, the air is first dehumidified and then heated, so that the air has a higher moisture absorption capacity, and the better the dehumidification capacity of the dehumidification device 1000. The dehumidification device 1000 can use a thermoelectric cooler 500 to cool the dehumidification tube 300 and heat the heating tube 400, and the cost is low. The thermoelectric cooler 500 does not require refrigerant during operation, and the energy utilization rate of the thermoelectric cooler 500 is high. The dehumidification device 1000 can save more energy and the product is more environmentally friendly.

[0046] In some embodiments, please refer to Figure 1 The dehumidification device 1000 further includes a cold air pipe 700, through which the cold end 501 and the first box 100 are connected, and the cold air of the cold end 501 is transported to the first box 100 through the cold air pipe 700, and the cold air cools the dehumidification pipe 300 to reduce the temperature of the dehumidification pipe 300. The cold air pipe 700 is a plastic pipe or a rubber pipe. By setting the cold air pipe 700, it is beneficial to arrange the positions of the thermoelectric cooler 500 and the first box 100. The thermoelectric cooler 500 and the first box 100 are not limited to being set as one piece, and the thermoelectric cooler 500 and the first box 100 can be set separately. By changing the length of the cold air pipe 700, the thermoelectric cooler 500 and the first box 100 can be installed in more positions.

[0047] In some embodiments, please refer to Figure 1 The dehumidification device 1000 further includes a hot air pipe 750, through which the hot end 502 and the second box 200 are connected, and the hot air of the hot end 502 is transported to the second box 200 through the hot air pipe 750, and the hot air heats the heating pipe 400 to increase the temperature of the heating pipe 400. By providing the hot air pipe 750, it is convenient to arrange the positions of the thermoelectric cooler 500 and the second box 200, and the thermoelectric cooler 500 and the second box 200 are not limited to being provided as an integral unit, and the thermoelectric cooler 500 and the second box 200 can be provided separately. By changing the length of the hot air pipe 750, the thermoelectric cooler 500 and the second box 200 can be installed in more positions.

[0048] In some embodiments, please refer to Figure 2 The cold end 501 is provided with a first opening 503, and the first box body 100 is provided with a second opening 101. The cold end 501 is attached to the outer side of the first box body 100, and the first opening 503 is opposite to the second opening 101. The cold air of the cold end 501 is discharged from the first opening 503 and then enters the first box body 100 from the second opening 101.

[0049] The cold end 501 is directly attached to the first box 100. On the one hand, the cold end 501 is close to the first box 100, and the cold air directly enters the first box 100 from the first opening 503 and the second opening 101. The cold air is transported over a short distance, and the temperature of the cold air will not increase during the transportation process. When the cold air enters the first box 100, it can still maintain a low temperature.

[0050] On the other hand, the temperature of the outer wall of the cold end 501 is lower, and the cold end 501 is in contact with the first box body 100, so the low temperature of the cold end 501 can be transferred to the outer wall of the first box body 100, and the outer wall of the first box body 100 then transfers the low temperature to the inside of the first box body 100, so that the temperature of the dehumidification pipe 300 drops faster.

[0051] Furthermore, the cold end 501 and the first box body 100 are arranged in close contact with each other, which is beneficial to reducing the volume of the dehumidification device 1000 and saving space.

[0052] In some embodiments, please refer to Figure 3 , the cold end 501 is attached to the first box 100, one end of the cold air pipe 700 is connected to the first opening 503, and the other end of the cold air pipe 700 extends into the first box 100 from the second opening 101. The cold air of the cold end 501 is transported to the first box 100 through the cold air pipe 700. By using the cold air pipe 700 to guide the cold air to be discharged into the first box 100, it is prevented that the cold air leaks in the gap between the cold end 501 and the first box 100, causing waste.

[0053] In some embodiments, please refer to Figure 2 The hot end 502 is provided with a third opening 504, and the second box body 200 is provided with a fourth opening 201. The hot end 502 is attached to the outer side of the second box body 200, and the third opening 504 is opposite to the fourth opening 201. The hot air of the hot end 502 is discharged from the third opening 504 and then enters the second box body 200 from the fourth opening 201.

[0054] The hot end 502 is directly attached to the second box 200. On the one hand, the distance between the hot end 502 and the second box 200 is relatively close, and the hot air directly enters the second box 200 from the third opening 504 and the fourth opening 201. The distance of hot air transportation is relatively short, and the temperature of the hot air will not decrease during transportation. When the hot air enters the second box 200, it can still maintain a relatively high temperature.

[0055] On the other hand, the outer wall of the hot end 502 has a higher temperature. The hot end 502 is attached to the second box body 200, and the high temperature of the hot end 502 can be transferred to the outer wall of the second box body 200. The outer wall of the second box body 200 then transfers the high temperature to the second box body 200, so that the temperature of the heating tube 400 rises faster.

[0056] Furthermore, the hot end 502 and the second box body 200 are arranged in close contact with each other, which is beneficial to reducing the volume of the dehumidification device 1000 and saving space.

[0057] In some embodiments, please refer to Figure 3 , the hot end 502 is attached to the second box 200, one end of the hot air pipe 750 is connected to the third opening 504, and the other end of the hot air pipe 750 extends into the second box 200 from the fourth opening 201. The hot air of the hot end 502 is transported to the second box 200 through the hot air pipe 750. By using the hot air pipe 750 to guide the hot air to be discharged into the second box 200, it is prevented that the hot air leaks in the gap between the hot end 502 and the second box 200, causing waste.

[0058] In some embodiments, please refer to Figure 3 The dehumidification pipe 300 is provided with a first drain port 303. By providing the first drain port 303, when the air entering the dehumidification pipe 300 is separated from the water vapor, the separated water can be discharged from the first drain port 303 and fall into the bottom of the first box 100. The bottom of the first box 100 is also provided with a second drain port 102, and the water is then discharged from the second drain port 102 to the outside of the first box 100.

[0059] In some embodiments, please refer to Figure 3 The dehumidification device 1000 further includes a blower 760, which is connected to one end of the dehumidification pipe 300. The blower 760 draws external air into the dehumidification pipe 300. Specifically, the dehumidification device 1000 further includes a second pipe 610, one end of which is connected to the blower 760, and the other end of the second pipe 610 is connected to the air inlet end 301 of the dehumidification pipe 300.

[0060] The blower 760 is used to draw the outside air into the dehumidification pipe 300. After the air is dehumidified, the air is pressed into the heating pipe 400 for heating, and finally the heated air is discharged to the space to be dehumidified. By providing the blower 760, the air can flow more smoothly between the dehumidification pipe 300 and the heating pipe 400.

[0061] Please refer to Figure 4 The embodiment of the present application further provides a battery pack system 2000, including a battery pack 800 and a dehumidification device 1000 provided in the embodiment of the present application. The battery pack 800 is provided with an air inlet 801 and an air outlet 802, and the air outlet end 402 of the heating tube 400 is connected to the air inlet 801.

[0062] Specifically, the battery pack 800 includes a shell 803 and a battery module 804 , the shell 803 is provided with a accommodating cavity 805 , the battery module 804 is arranged in the accommodating cavity 805 , the air inlet 801 and the exhaust port 802 are provided in the shell 803 , and both the air inlet 801 and the exhaust port 802 are connected to the accommodating cavity 805 .

[0063] The battery pack system 2000 further includes a third pipe 620, one end of which is connected to the air outlet 402 of the heating tube 400, and the other end of the third pipe 620 is connected to the air inlet 801. The dehumidification device 1000 is used to dehumidify the space in the battery pack 800, and the heated air is discharged into the battery pack 800 through the third pipe 620, and the dehumidified air in the battery pack 800 is discharged from the air outlet 802.

[0064] In some embodiments, the battery pack system 2000 further includes a first temperature sensor, a first humidity sensor, and a controller. The first temperature sensor, the first humidity sensor, the thermoelectric cooler 500, and the blower 760 are all electrically connected to the controller. The first temperature sensor and the first humidity sensor are disposed in the battery pack 800.

[0065] The first temperature sensor is used to detect the temperature value in the battery pack 800 and to transmit the temperature value in the battery pack 800 to the controller. The first humidity sensor is used to detect the humidity value in the battery pack 800 and to transmit the humidity value in the battery pack 800 to the controller.

[0066] The controller determines whether dehumidification is required in the battery pack 800 according to the temperature value and the humidity value in the battery pack 800 to control the opening or closing of the blower 760 and the thermoelectric cooler 500 , and the opening or closing of the air inlet 801 and the exhaust port 802 .

[0067] By setting the first temperature sensor, the first humidity sensor and the controller, the battery pack system can automatically detect the temperature value and the humidity value in the battery pack and determine whether the battery pack needs to be dehumidified. If dehumidification is required, dehumidification can be performed automatically, making the product more intelligent and convenient to use.

[0068] In some embodiments, the battery pack system 2000 further includes a second temperature sensor and a second humidity sensor. The second temperature sensor and the second humidity sensor are both electrically connected to the controller. The second temperature sensor and the second humidity sensor are disposed outside the battery pack 800.

[0069] The second temperature sensor is used to detect the temperature value outside the battery pack 800 and to transmit the temperature value outside the battery pack 800 to the controller. The second humidity sensor is used to detect the humidity value outside the battery pack 800 and to transmit the humidity value outside the battery pack 800 to the controller.

[0070] The controller determines whether dehumidification is required inside the battery pack 800 based on the temperature value inside the battery pack 800, the humidity value inside the battery pack 800, the temperature value outside the battery pack 800, and the humidity value outside the battery pack 800, so as to control the opening or closing of the thermoelectric cooler 500, and the opening or closing of the air inlet and the exhaust port.

[0071] By adding a second temperature sensor and a second humidity sensor to detect the temperature value outside the battery pack 800 and the humidity value outside the battery pack 800, and transmitting the temperature value outside the battery pack 800 and the humidity value outside the battery pack 800 to the controller, the controller can judge whether the battery pack 800 needs to be dehumidified based on more conditions, and the judgment can be more accurate.

[0072] In some embodiments, the controller calculates the condensation water content H inside the battery pack 800 based on the temperature value inside the battery pack 800, the humidity value inside the battery pack 800, the temperature value outside the battery pack 800, and the humidity value outside the battery pack 800, and compares the condensation water content H with a pre-stored first safety threshold.

[0073] When the condensed water content H is less than the first safety threshold, the thermoelectric cooler 500, the air inlet and the exhaust port are all controlled to be closed. When the condensed water content H is greater than or equal to the first safety threshold, the thermoelectric cooler 500 and the air inlet are controlled to be opened.

[0074] Specifically, the controller is also provided with a second safety threshold, the first safety threshold and the second safety threshold are standard values ​​of condensed water content pre-stored in the controller, the first safety threshold is 3g, and the second safety threshold is 6g. The controller is provided with a battery pack condensation mathematical theoretical model, which is a relationship between the temperature value inside the battery pack 800, the humidity value inside the battery pack 800, the temperature value outside the battery pack 800, the humidity value outside the battery pack 800 and the condensed water content H.

[0075] The controller inputs the temperature value inside the battery pack 800 , the humidity value inside the battery pack 800 , the temperature value outside the battery pack 800 , and the humidity value outside the battery pack 800 into the battery pack condensation mathematical theoretical model to calculate the condensation water content H inside the battery pack 800 .

[0076] If H is less than 3g, the battery pack 800 does not need to be dehumidified. The controller turns off the blower 760, the thermoelectric cooler 500, the air inlet 801 and the exhaust port 802 of the battery pack 800. If 3g≤H≤6g, the battery pack 800 needs to be dehumidified. If H>6g, the battery pack system 2000 will alarm for excessive condensed water, and the user must dehumidify the battery pack 800. The controller turns on the blower 760, the thermoelectric cooler 500 and the air inlet 801. The blower 760 draws outside air into the dehumidification tube 300. After the air is dehumidified, it enters the heating tube 400 for heating. The heated gas enters the battery pack 800 from the air inlet 801 for dehumidification. After dehumidification, the controller opens the exhaust port 802 to discharge the air to the outside.

[0077] In some embodiments, the battery pack system 2000 further includes an on-board camera and a weather forecast system. The on-board camera is used to collect ground conditions and determine whether the battery pack 800 is wading. The weather forecast system is used to detect weather conditions and determine whether the battery pack is in an environment where it is raining. If the on-board camera detects that the battery pack 800 is wading, and the weather forecast system detects that it is raining, the dehumidification environment is not good at this time, and the controller turns off the dehumidification device 1000.

[0078] Attached Figure 4 The electronic data collection and dehumidification management system 960 mainly includes the first temperature sensor, the first humidity sensor, the second temperature sensor, the second humidity sensor, the controller, the vehicle camera, the weather forecast system and the logic control system for judging dehumidification described above. The electronic data collection and dehumidification management system 960 can be integrated into the BMS of the existing battery pack.

[0079] In some embodiments, please refer to Figure 5 , multiple air inlets 801 are provided, and the multiple air inlets 801 are evenly arranged in the battery pack 800. Specifically, the number of air inlets 801 is 5, and the battery pack system 2000 also includes a fourth pipe 630, a fifth pipe 640, a sixth pipe 650 and a seventh pipe 660. One end of the fourth pipe 630 is connected to the third pipe 620, and the other end of the fourth pipe 630 is connected to another air inlet 801. One end of the fifth pipe 640 is connected to the fourth pipe 630, and the other end of the fifth pipe 640 is connected to another air inlet 801.

[0080] One end of the sixth pipe 650 is communicated with the third pipe 620 , and the other end of the sixth pipe 650 is connected to another air inlet 801 . One end of the seventh pipe 660 is communicated with the sixth pipe 650 , and the other end of the seventh pipe 660 is connected to another air inlet 801 .

[0081] When the battery pack 800 is provided with a single air inlet 801, after the heated air enters the battery pack 800 from the single air inlet 801, the air flows while being dehumidified. When the air flows to the area of ​​the battery pack 800 far away from the air inlet 801, the air temperature drops, resulting in poor dehumidification effect in this area.

[0082] Therefore, by setting up multiple air inlets 801, the multiple air inlets 801 are evenly arranged in various areas of the battery pack 800, the heated air can directly enter various areas of the battery pack 800, the air entering various areas of the battery pack 800 has a higher temperature, and various areas of the battery pack 800 can be better dehumidified.

[0083] In some embodiments, please refer to Figure 5 The battery pack system 2000 further includes an intake valve 900 and an exhaust valve 950. There are five intake valves 900, which are respectively arranged at five intake ports 801, and an exhaust valve 950 is arranged at an exhaust port 802. Both the intake valve 900 and the exhaust valve 950 are electrically connected to the controller. The controller controls the opening or closing of the intake port 801 and the exhaust port 802 by controlling the opening or closing of the intake valve 900 and the exhaust valve 950.

[0084] If the battery pack 800 does not need to be dehumidified, the air inlet valve 900 and the air exhaust valve 950 are closed. If the battery pack 800 needs to be dehumidified, the air inlet valve 900 is opened, and the heated air enters the battery pack 800 from the air inlet 801. At this time, the air exhaust valve 950 is closed to prevent the air from being immediately discharged from the exhaust port 802. After the air has completely dehumidified the battery pack 800, the air exhaust valve 950 is opened again, and the dehumidified air is discharged from the exhaust port 802.

[0085] The embodiment of the present application also provides a vehicle, including a vehicle frame and a battery pack system 2000 provided in the embodiment of the present application, wherein the battery pack 800 is fixed to the bottom of the vehicle, and the dehumidification device 1000, the second temperature sensor, the second humidity sensor and the vehicle-mounted camera are fixed to the vehicle frame. One end of the third pipe 620 is connected to the air outlet end 402 of the heating pipe 400, and the other end of the third pipe 620 is connected to the air inlet 801.

[0086] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea.

Claims

1. A dehumidification device, characterized in that: It comprises a first box, a second box, a dehumidification pipe, a heating pipe and a thermoelectric cooler; the dehumidification pipe is arranged in the first box, the heating pipe is arranged in the second box, and the air outlet end of the dehumidification pipe is connected to the air inlet end of the heating pipe; The thermoelectric cooler includes a cold end and a hot end. The cold end is used to transport cold air into the first box to reduce the temperature of the dehumidification tube so that water vapor is separated when external air flows into the dehumidification tube; the separated gas flows to the heating tube; the hot end is used to transport hot air into the second box to increase the temperature of the heating tube so as to heat the gas flowing through the heating tube.

2. The dehumidification device according to claim 1, characterized in that: It also includes a cold air pipe, through which the cold end and the first box are connected, and the cold air at the cold end is transported into the first box through the cold air pipe.

3. The dehumidification device according to claim 1, characterized in that: It also includes a hot air pipe, through which the hot end and the second box are connected, and the hot air from the hot end is transported to the second box through the hot air pipe.

4. The dehumidification device according to any one of claims 1 to 3, characterized in that: The cold end is provided with a first opening, and the first box body is provided with a second opening. The cold end is attached to the outer side of the first box body, and the first opening is opposite to the second opening. The cold air of the cold end is discharged from the first opening and then enters the first box body from the second opening.

5. The dehumidification device according to any one of claims 1 to 3, characterized in that: The hot end is provided with a third opening, and the second box is provided with a fourth opening. The hot end is attached to the outer side of the second box, and the third opening is opposite to the fourth opening. The hot air of the hot end is discharged from the third opening and then enters the second box from the fourth opening.

6. The dehumidification device according to claim 1, characterized in that: The dehumidification pipe is provided with a first drain port.

7. The dehumidification device according to claim 1, characterized in that: It also includes a blower, which is connected to one end of the dehumidification tube; the blower draws external air into the dehumidification tube.

8. A battery pack system, characterized in that: It comprises a battery pack and the dehumidification device according to any one of claims 1 to 7; the battery pack is provided with an air inlet and an air outlet, and the air outlet end of the heating tube is connected to the air inlet.

9. The battery pack system according to claim 8, characterized in that: It also includes a first temperature sensor, a first humidity sensor and a controller; the first temperature sensor, the first humidity sensor and the thermoelectric cooler are all electrically connected to the controller; the first temperature sensor and the first humidity sensor are arranged in the battery pack; The first temperature sensor is used to detect the temperature value in the battery pack, and to transmit the temperature value in the battery pack to the controller; the first humidity sensor is used to detect the humidity value in the battery pack, and to transmit the humidity value in the battery pack to the controller; The controller controls opening or closing of the thermoelectric cooler according to a temperature value in the battery pack and a humidity value in the battery pack, and controls opening or closing of the air inlet and the air outlet.

10. The battery pack system according to claim 9, characterized in that: It also includes a second temperature sensor and a second humidity sensor; the second temperature sensor and the second humidity sensor are both electrically connected to the controller; the second temperature sensor and the second humidity sensor are arranged outside the battery pack; The second temperature sensor is used to detect the temperature value outside the battery pack, and is used to transmit the temperature value outside the battery pack to the controller; the second humidity sensor is used to detect the humidity value outside the battery pack, and is used to transmit the humidity value outside the battery pack to the controller; The controller controls opening or closing of the thermoelectric cooler and controls opening or closing of the air inlet and the air outlet according to a temperature value inside the battery pack, a humidity value inside the battery pack, a temperature value outside the battery pack, and a humidity value outside the battery pack.

11. The battery pack system according to claim 10, characterized in that: The controller calculates the condensed water content H in the battery pack according to the temperature value in the battery pack, the humidity value in the battery pack, the temperature value outside the battery pack, and the humidity value outside the battery pack, and compares the condensed water content H with a pre-stored first safety threshold; When the condensed water content H is less than the first safety threshold, the thermoelectric cooler, the air inlet and the exhaust port are controlled to be closed; when the condensed water content H is greater than or equal to the first safety threshold, the thermoelectric cooler and the air inlet are controlled to be opened.

12. The battery pack system according to claim 8, characterized in that: There are multiple air inlets, and the multiple air inlets are evenly arranged in the battery pack.

13. The battery pack system according to claim 9, characterized in that: It also includes an intake valve and an exhaust valve, wherein the intake valve is arranged at the intake port, and the exhaust valve is arranged at the exhaust port, and both the intake valve and the exhaust valve are electrically connected to the controller.

14. A vehicle, characterized in that: A battery pack system comprising any one of claims 8 to 13.

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