Anti-condensation packaging device for battery pack

Abstract

A battery pack anti-condensation packing device belongs to the field of battery pack packing, and comprises an air storage mechanism used for storing dry air; the inflating mechanism is used for inflating the stored dry air into the battery pack packaging box filled with the battery pack and comprises a first driving piece and an inflating pipe; the exhaust mechanism is used for exhausting original gas in the battery pack packaging box into the external environment and comprises a second driving part and an exhaust pipe; and the control unit is used for controlling the actions of the first driving piece and the second driving piece. According to the anti-condensation packaging device for the battery pack, the interior of a battery pack packaging box containing the battery pack can be efficiently filled with dry gas, it is guaranteed that condensation cannot be formed on the surface of the battery pack due to the change of the environment temperature in the transportation process, the safety is not affected, and meanwhile the material cost of battery pack packaging and transportation can be effectively controlled.

Description

Technical Field

[0001] This application relates to the technical field of battery pack packaging, and particularly relates to a battery pack anti-condensation packaging device. Background Art

[0002] Marine transportation is one of the transportation methods for battery pack products to be sold globally, and it is necessary to package and transport the battery packs separately. During the packaging process of the battery pack, if the air humidity is relatively high, after the battery pack is encapsulated in the packaging box, the humid air inside the packaging box will generate condensation during transportation or after the battery pack reaches the destination due to the change of environmental temperature, and adhere to the surface of the battery pack. Such a battery pack with condensation on its surface will affect the safety of the relevant system during installation and use, and in severe cases, it may cause a short circuit in the relevant system and result in a fire. Therefore, after the battery pack is transported to the destination, it is necessary to find a ventilated and dry place, stack the battery packs to dry them, and then install and use them, which undoubtedly increases the project cycle and wastes a lot of manpower and material resources.

[0003] In the current solutions, more often, desiccant bags are added inside the battery pack packaging box, and the desiccant absorbs the moisture in the air inside the packaging box. However, this solution can only cope with the situation of relatively low air humidity. In some southern regions or during the rainy season, multiple times of adding high-efficiency desiccant are required to achieve a certain effect, which undoubtedly greatly increases the material cost of battery pack packaging and transportation. Therefore, how to avoid condensation in the battery pack packaging box and at the same time control the material cost of battery pack packaging and transportation is an urgent problem to be solved in the battery pack industry currently. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a battery pack anti-condensation packaging device to solve at least one of the above technical problems.

[0005] This application provides a battery pack anti-condensation packaging device, including: an air storage mechanism for storing dry air; an air inflation mechanism for inflating dry air into a battery pack packaging box containing a battery pack, including a first driving member and an air inflation pipe, the first driving member is used to drive the air inflation pipe to move so that the air inflation pipe is connected to or separated from the battery pack packaging box, and the air inflation pipe is connected to the air storage mechanism through a pipeline; an exhaust mechanism for discharging the original gas in the battery pack packaging box to the external environment, including a second driving member and an exhaust pipe, the second driving member is used to drive the exhaust pipe to move so that the exhaust pipe is connected to or separated from the battery pack packaging box, and the exhaust pipe is communicated with the external environment; and a control unit for controlling the actions of the first driving member and the second driving member.

[0006] In some alternative embodiments, it further includes: a first humidity sensor for detecting the humidity of the external environment; and a second humidity sensor for detecting the humidity of the gas discharged from the battery pack packaging box. Wherein, the inflation mechanism further includes a flow control valve installed on the pipeline for regulating the flow rate of the dry air. The control unit is used to control the opening degree of the flow control valve and control the inflation time according to the signals of the first humidity sensor and the second humidity sensor.

[0007] In some alternative embodiments, it further includes: a conveying mechanism for transporting the battery pack packaging box containing the battery pack, with an inflation mechanism and an exhaust mechanism respectively arranged on both sides of the conveying mechanism. Wherein, the control unit controls the actions of the first driving member and the second driving member according to the signal of the conveying mechanism, and sends a signal to the conveying mechanism after inflation is completed.

[0008] In some alternative embodiments, the gas storage mechanism includes a dryer, a buffer tank, and a pressure gauge. The dryer is used to dry the input compressed air. The buffer tank is connected to the dryer for temporarily storing the dry air. The buffer tank is connected to the inflation pipe through a pipeline. The pressure gauge is installed on the buffer tank for displaying the real-time pressure inside the buffer tank. The control unit controls the opening degree of the flow control valve according to the signal of the pressure gauge.

[0009] In some alternative embodiments, the pipeline includes a hose section and a hard pipe section. The hose section is connected to the inflation pipe, and the hard pipe section is connected to the buffer tank. The flow control valve is installed on the hard pipe section.

[0010] In some alternative embodiments, the gas storage mechanism further includes a compressed air source connected to the dryer for providing compressed air.

[0011] In some alternative embodiments, the inflation mechanism further includes an electrostatic discharge wire and a conductive rubber pad. One end of the electrostatic discharge wire is connected to the inflation pipe, and the other end of the electrostatic discharge wire is grounded. The inflation pipe is a metal part. The conductive rubber pad is installed on the inflation pipe for contacting the battery pack to release static electricity.

[0012] In some alternative embodiments, the inflation pipe includes an inflation main pipe and a plurality of inflation branch pipes. The inflation main pipe is connected to the first driving member and the pipeline. One ends of the plurality of inflation branch pipes are connected to the inflation main pipe, and the other ends of the plurality of inflation branch pipes are used to extend into the battery pack packaging box. A plurality of through holes are provided on the battery pack packaging box, and the plurality of through holes are respectively used for the plurality of inflation branch pipes to extend into. A one-way valve is provided at the inner end of each through hole, and the one-way valve is used to prevent the gas in the battery pack packaging box from flowing out and the valve can be pushed open from the outside to the inside.

[0013] In some alternative embodiments, the exhaust pipe includes a main exhaust pipe and a plurality of exhaust branch pipes. The main exhaust pipe is connected to the second driving member and communicates with the external environment. One end of each of the plurality of exhaust branch pipes is connected to the main exhaust pipe, and the other ends of the plurality of exhaust branch pipes are configured to extend into the battery pack packaging box. A plurality of through holes are provided on the battery pack packaging box, and the plurality of through holes are respectively configured to allow the plurality of exhaust branch pipes to extend therethrough. A one-way valve is provided at the inner end of each through hole, and the one-way valve is configured to prevent the gas in the battery pack packaging box from flowing out and the valve can be pushed open from the outside to the inside.

[0014] In some alternative embodiments, the control unit includes a main control module, a power module, a communication module, a signal acquisition module, and a driving module. The main control module is configured to store and execute set programs and parameters. The power module is configured to supply power to other modules. The communication module is configured to communicate with the conveying mechanism and the PC. The conveying mechanism is configured to transport the battery pack packaging box containing the battery pack, and the PC is the upper computer of the battery pack anti-condensation packaging device. The signal acquisition module is configured to acquire signals of the flow control valve, the first humidity sensor, the second humidity sensor, and the pressure gauge. The flow control valve is configured to adjust the flow rate of the dry air. The first humidity sensor is configured to detect the humidity of the external environment. The second humidity sensor is configured to detect the humidity of the gas discharged from the battery pack packaging box. The pressure gauge is configured to display the real-time pressure in the gas storage mechanism. The driving module is configured to control the actions of the first driving member and the second driving member and the opening degree of the flow control valve.

[0015] Based on the above technical solutions, the battery pack anti-condensation packaging device provided by the present application stores dry air through the gas storage mechanism, fills the stored dry air into the battery pack packaging box containing the battery pack through the air filling mechanism, discharges the original gas in the battery pack packaging box to the external environment through the exhaust mechanism, and realizes automatic control through the control unit, and can efficiently fill the inside of the battery pack packaging box containing the battery pack with dry gas, ensuring that no condensation forms on the surface of the battery pack due to changes in ambient temperature during transportation, affecting safety, and at the same time effectively controlling the material cost of battery pack packaging and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 FIG. 15 is a schematic structural diagram of a battery pack anti-condensation packaging device provided by an embodiment of the present application.

[0018] Figure 2A side view schematic diagram of a battery pack anti-condensation packaging device provided by an embodiment of the present application.

[0019] Figure 3 A top-down perspective schematic diagram of a battery pack packaging box provided by an embodiment of the present application.

[0020] Figure 4 A partial structural schematic diagram of a battery pack anti-condensation packaging device during inflation provided by an embodiment of the present application.

[0021] Figure 5 A partial structural schematic diagram of a battery pack anti-condensation packaging device during exhaust provided by an embodiment of the present application.

[0022] Figure 6 A structural schematic diagram of a control unit provided by an embodiment of the present application.

[0023] Reference numerals: 1, battery pack; 2, battery pack packaging box; 201, through hole; 202, one-way valve; 3, bottom tray; 100, battery pack anti-condensation packaging device; 10, gas storage mechanism; 11, dryer; 111, first air inlet; 112, first air outlet; 12, buffer tank; 121, second air inlet; 122, second air outlet; 13, pressure gauge; 20, inflation mechanism; 21, first driving member; 22, inflation pipe; 221, inflation main pipe; 222, inflation branch pipe; 2221, third air outlet; 23, flow control valve; 24, first bracket; 25, pipeline; 251, hose section; 252, hard pipe section; 26, static electricity release wire; 27, conductive rubber pad; 30, exhaust mechanism; 31, second driving member; 32, exhaust pipe; 321, exhaust main pipe; 322, exhaust branch pipe; 33, second bracket; 40, first humidity sensor; 50, second humidity sensor; 60, control unit; 61, box body; 62, main control module; 63, power supply module; 64, communication module; 65, signal acquisition module; 66, driving module; 70, conveying mechanism; 80, frame. Detailed implementation manners

[0024] Next, specific embodiments of the present application will be described in detail in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the description of the present application without creative efforts shall fall within the scope of protection of the present application.

[0025] In the description of this application, unless otherwise clearly specified and defined, terms such as "connection", "installation", "setup", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "center", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. It is only for the convenience of description and to simplify the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Terms such as "first", "second", "third", etc. are only used to distinguish components with similar attributes, rather than indicating or implying relative importance or a specific order, unless otherwise clearly specified and defined.

[0028] The term "comprising", "including", "having" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element.

[0029] The meaning of the term "plurality" is two or more (including two).

[0030] The term "and / or" only describes an association relationship of associated objects, and it represents three possible relationships. For example, A and / or B can represent: A exists alone, both A and B exist simultaneously, and B exists alone.

[0031] The terms "one embodiment", "as an example", "in one implementation manner", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example may be included in at least one embodiment or example of the present application. The schematic expressions of such terms do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Without conflict, the embodiments in the present application and the features in the embodiments may be combined in a suitable manner.

[0032] Figure 1 FIG. 4 is a schematic structural diagram of a battery pack anti-condensation packaging device 100 provided for an embodiment of the present application. Figure 2 FIG. 5 is a side view schematic diagram of a battery pack anti-condensation packaging device 100 provided for an embodiment of the present application. As Figure 1 and Figure 2 shown, an embodiment of the present application provides a battery pack anti-condensation packaging device 100 for filling dry air into a battery pack packaging box 2 containing a battery pack 1 and discharging the original gas in the battery pack packaging box 2 to the external environment. The battery pack anti-condensation packaging device 100 includes a gas storage mechanism 10, an air inflation mechanism 20, an exhaust mechanism 30, a first humidity sensor 40, a second humidity sensor 50, and a control unit 60.

[0033] The gas storage mechanism 10 is used to dry the input compressed air and temporarily store it. The air inflation mechanism 20 is used to fill the dry air in the gas storage mechanism 10 into the battery pack packaging box 2. The exhaust mechanism 30 is used to discharge the original gas in the battery pack packaging box 2 to the external environment. The original gas in the battery pack packaging box 2 mainly refers to humid air. The first humidity sensor 40 is used to detect the humidity of the external environment, and the second humidity sensor 50 is used to detect the humidity of the gas discharged from the battery pack packaging box 2. The control unit 60 is used to determine the inflation time according to the signals of the first humidity sensor 40 and the second humidity sensor 50, and control the actions of the air inflation mechanism 20 and the exhaust mechanism 30. Specific descriptions of each part are as follows.

[0034] The gas storage mechanism 10 includes a dryer 11, a buffer tank 12, and a pressure gauge 13. The dryer 11 is used to dry the input compressed air. The dryer 11 has a first air inlet 111 and a first air outlet 112. The first air inlet 111 is used to connect to a compressed air source through a pipeline, and the first air outlet 112 is connected to the second air inlet 121 of the buffer tank 12 through a pipeline. The buffer tank 12 is used to temporarily store dry air. The buffer tank 12 has a second air inlet 121 and a second air outlet 122. The second air inlet 121 is connected to the first air outlet 112 of the dryer 11 through a pipeline, and the second air outlet 122 is connected to the air inflation mechanism 20 through a pipeline 25. The pressure gauge 13 is installed on the buffer tank 12 and is used to display the real-time pressure in the buffer tank 12.

[0035] As an example, the gas storage mechanism 10 may further include a compressed air gas source (not shown in the figure), the compressed air gas source is used to provide compressed air, and the compressed air gas source is connected to the first air inlet 111 of the dryer 11 through a pipeline.

[0036] The inflation mechanism 20 includes a first driving member 21, an inflation pipe 22, and a flow control valve 23. The first driving member 21 is connected to the inflation pipe 22, and the first driving member 21 is used to drive the inflation pipe 22 to move, so that the inflation pipe 22 is connected to or separated from the battery pack packaging box 2. The inflation pipe 22 is connected to the second air outlet 122 of the buffer tank 12 through a pipeline 25, and is used to blow out the dry air in the buffer tank 12. The flow control valve 23 is installed on the pipeline 25 between the inflation pipe 22 and the second air outlet 122 of the buffer tank 12, and is used to control the flow rate of the dry air.

[0037] Regarding the first driving member 21, as an example, the first driving member 21 is a first cylinder, the first cylinder is installed on the first bracket 24, and is arranged on one side of the battery pack packaging box 2. The output end of the first cylinder faces horizontally towards a side surface of the battery pack packaging box 2 and is connected to the inflation pipe 22.

[0038] Regarding the inflation pipe 22, as an example, the inflation pipe 22 is a hard pipe made of metal, and includes an inflation main pipe 221 and a plurality of inflation branch pipes 222 connected to the inflation main pipe 221. The inflation main pipe 221 is perpendicular to the output end of the first cylinder and horizontally extends along the direction parallel to the length of a side surface of the battery pack packaging box 2. The middle part of the inflation main pipe 221 is connected to the output end of the first cylinder, and a third air inlet (not shown in the figure) connected to the pipeline 25 is opened at the bottom of the inflation main pipe 221. The plurality of inflation branch pipes 222 are distributed along the length direction of the inflation main pipe 221 and are all vertically connected to the inflation main pipe 221. Third air outlets 2221 are opened on the side surfaces of the ends of the inflation branch pipes 222. The inflation pipe 22 with this structure can enable the dry air to quickly and evenly enter the battery pack packaging box 2.

[0039] Furthermore, Figure 3 is a top-down perspective schematic diagram of the battery pack packaging box 2, as shown in Figure 3As shown, three through holes 201 are provided on both side surfaces of the battery pack packaging box 2, and a one-way valve 202 is provided at the inner end of each through hole 201 to prevent the gas in the battery pack packaging box 2 from flowing out through the through holes 201. Specifically, the one-way valve 202 is a swing check valve, which is embedded in the battery pack packaging box 2 or installed on the inner wall of the battery pack packaging box 2. When the pressure in the battery pack packaging box 2 is greater than the external environmental pressure, the valve automatically closes, and the one-way valve 202 is in the closed state. When the valve is pushed open from the outside to the inside by an external force, the one-way valve 202 is in the open state. The number of inflation branch pipes 222 is three, and the three inflation branch pipes 222 respectively correspond to the three through holes 201 on one side surface of the battery pack packaging box 2.

[0040] Figure 4 FIG. is a partial structural schematic diagram of a battery pack anti-condensation packaging device 100 provided by an embodiment of the present application during inflation. As Figure 4 shown, and in combination with Figure 3 , when the inflation pipe 22 is connected to one side of the battery pack packaging box 2 under the drive of the first driving member 21, the three inflation branch pipes 222 respectively enter the corresponding through holes 201, and push open the valves of the corresponding one-way valves 202, so that the inside of the inflation pipe 22 is communicated with the inside of the battery pack packaging box 2. At this time, the battery pack packaging box 2 can be inflated.

[0041] As Figure 1 and Figure 2 shown, regarding the pipeline 25 between the inflation pipe 22 and the second air outlet 122 of the buffer tank 12, the pipeline 25 includes a hose section 251 and a hard pipe section 252. The hose section 251 is connected to the inflation pipe 22 to facilitate the movement of the inflation pipe 22 under the drive of the first driving member 21. Specifically, the hose section 251 is connected to the third air inlet at the bottom of the inflation main pipe 221. The hard pipe section 252 is connected to the second air outlet 122 of the buffer tank 12, and a flow control valve 23 is installed on the hard pipe section 252.

[0042] Since the gas to be filled is dry air, static electricity will be generated in the battery pack 1 during the inflation process. The static electricity is very likely to damage the electrical components in the battery pack 1. The battery pack 1 with static electricity may also explode and catch fire during transportation. Therefore, in order to eliminate static electricity, the inflation mechanism 20 may further include a static electricity release wire 26 and a conductive rubber pad 27. One end of the static electricity release wire 26 is connected to the inflation pipe 22, and the other end of the static electricity release wire 26 is grounded. Exemplarily, one end of the static electricity release wire 26 is connected to the inflation main pipe 221, and the other end of the static electricity release wire 26 is connected to the box body of the control unit 60, and the box body is grounded. The number of conductive rubber pads 27 is multiple, and the multiple conductive rubber pads 27 are respectively installed on the end faces of the ends of the multiple inflation branch pipes 222 for contacting the battery pack 1 to release static electricity.

[0043] The exhaust mechanism 30 includes a second driving member 31 and an exhaust pipe 32. The second driving member 31 is connected to the exhaust pipe 32. The second driving member 31 is used to drive the exhaust pipe 32 to move, so that the exhaust pipe 32 is connected to or separated from the battery pack packaging box 2. The exhaust pipe 32 is communicated with the external environment and is used for discharging the gas in the battery pack packaging box 2.

[0044] Regarding the second driving member 31, as an example, the second driving member 31 is a second cylinder. The second cylinder is installed on the second bracket 33 and is arranged on the other side of the battery pack packaging box 2. The second cylinder is arranged opposite to the first cylinder. Specifically, the output end of the second cylinder faces horizontally towards another side surface of the battery pack packaging box 2 and is connected to the exhaust pipe 32.

[0045] Regarding the exhaust pipe 32, as an example, the exhaust pipe 32 is a hard pipe, which includes an exhaust main pipe 321 and a plurality of exhaust branch pipes 322 connected to the exhaust main pipe 321. The exhaust main pipe 321 is perpendicular to the output end of the second cylinder and horizontally extends along the direction parallel to the length of another side surface of the battery pack packaging box 2. The middle part of the exhaust main pipe 321 is connected to the output end of the second cylinder. A fourth air outlet (not shown in the figure) communicated with the external environment is provided at the bottom of the exhaust main pipe 321. The plurality of exhaust branch pipes 322 are distributed along the length direction of the exhaust main pipe 321 and are all vertically connected to the exhaust main pipe 321. A fourth air inlet (not shown in the figure) is provided at the end face of the exhaust branch pipe 322. The exhaust pipe 32 with this structure can enable the gas in the battery pack packaging box 2 to be quickly and evenly discharged.

[0046] Furthermore, as Figure 3 shown, three through holes 201 are provided on each of the two side surfaces of the battery pack packaging box 2. A check valve 202 is provided at the inner end of each through hole 201. The check valve 202 is a swing check valve. The number of the exhaust branch pipes 322 is three, and the three exhaust branch pipes 322 respectively correspond to the three through holes 201 on another side surface of the battery pack packaging box 2.

[0047] Figure 5 As shown in the partial structural schematic diagram of the battery pack anti-condensation packaging device 100 during exhaust provided by the embodiment of the present application, as Figure 5 shown, and in combination with Figure 3 , when the exhaust pipe 32 is connected to another side surface of the battery pack packaging box 2 under the drive of the second driving member 31, the three exhaust branch pipes 322 respectively enter the corresponding through holes 201 and push open the valves of the corresponding check valves 202, so that the inside of the exhaust pipe 32 is communicated with the inside of the battery pack packaging box 2. At this time, the gas in the battery pack packaging box 2 can be discharged to the external environment through the exhaust pipe 32.

[0048] As Figure 1 and Figure 2As shown, the first humidity sensor 40 is used to detect the humidity of the external environment. The first humidity sensor 40 can be installed at any position capable of detecting the humidity of the external environment where the anti-condensation packaging device 100 of this battery pack is located. Exemplarily, the first humidity sensor 40 is installed outside the housing of the control unit 60.

[0049] The second humidity sensor 50 is used to detect the humidity of the gas discharged from the battery pack packaging box 2. The second humidity sensor 50 is installed at the fourth air outlet of the exhaust pipe 32.

[0050] Figure 6 It is a schematic structural diagram of a control unit 60 provided by an embodiment of the present application. As Figure 6 shown, the control unit 60 includes a housing 61 and a main control module 62, a power module 63, a communication module 64, a signal acquisition module 65 and a drive module 66 arranged inside the housing 61. The main control module 62 is used to store and execute set programs and parameters. The power module 63 is used to provide power of corresponding levels to other modules. The communication module 64 is used to communicate with the conveying mechanism and the PC. Specifically, for the conveying mechanism, the conveying mechanism is used to transport the battery pack packaging box containing the battery pack. When the conveying mechanism transports the battery pack packaging box containing the battery pack to the set position, the communication module 64 obtains the in-place signal and can perform the subsequent inflation step. When the inflation is completed, the communication module 64 sends an inflation completion signal, and the conveying mechanism continues to transport; for the PC, the PC is the upper computer of the anti-condensation packaging device 100 of this battery pack, and the communication module 64 plays a role in data transmission. The signal acquisition module 65 is used to acquire the signals of the pressure gauge 13, the flow control valve 23, the first humidity sensor 40 and the second humidity sensor 50. The drive module 66 is used to control the actions of the first drive member 21 and the second drive member 31 and the opening degree of the flow control valve 23.

[0051] As Figure 1 and Figure 2 shown, the anti-condensation packaging device 100 of this battery pack may further include a conveying mechanism 70 and a frame 80. The conveying mechanism 70 is used to transport the battery pack packaging box 2 containing the battery pack 1. Exemplarily, the conveying mechanism 70 is a conveyor line. The gas storage mechanism 10 and the control unit 60 are installed below the conveying mechanism 70, and the inflation mechanism 20 and the exhaust mechanism 30 are respectively installed on both sides of the conveying mechanism 70; the operation of the conveying mechanism 70 can also be controlled by the control unit 60. The frame 80 is used to install and carry the gas storage mechanism 10, the inflation mechanism 20, the exhaust mechanism 30 and the control unit 60.

[0052] Working principle of the anti-condensation packaging device 100 for the battery pack: The battery pack packaging box 2 containing the battery pack 1 is placed on the bottom support 3 and transported by the conveying mechanism 70. When the conveying mechanism 70 transports the battery pack packaging box 2 containing the battery pack 1 to the positions corresponding to the inflation mechanism 20 and the exhaust mechanism 30, it stops. The conveying mechanism 70 sends a in-place signal to the control unit 60. The anti-condensation packaging device 100 for the battery pack is connected to the compressed air source. The control unit 60 determines the inflation time according to the humidity of the external environment detected by the first humidity sensor 40, and controls the first driving member 21 of the inflation mechanism 20 and the second driving member 31 of the exhaust mechanism 30 to perform actions according to the signal of the conveying mechanism 70.

[0053] Among them, the first driving member 21 drives the inflation pipe 22 to be connected to one side of the battery pack packaging box 2. Specifically, as Figure 3 and Figure 4 shown, each inflation branch pipe 222 of the inflation pipe 22 enters the corresponding through hole 201 on the battery pack packaging box 2, pushes open the valve of the corresponding one-way valve 202, and completely extends into the battery pack packaging box 2 until the conductive rubber pad 27 on the end face of the end of the inflation branch pipe 222 contacts the surface of the metal shell of the battery pack 1. At this time, the inside of the inflation pipe 22 is connected to the inside of the battery pack packaging box 2 through the third air outlet 2221 at the end of each inflation branch pipe 222. The second driving member 31 drives the exhaust pipe 32 to be connected to the other side of the battery pack packaging box 2. Specifically, as Figure 3 and Figure 5 shown, each exhaust branch pipe 322 of the exhaust pipe 32 enters the corresponding through hole 201 on the battery pack packaging box 2, pushes open the valve of the corresponding one-way valve 202. At this time, the inside of the exhaust pipe 32 is connected to the inside of the battery pack packaging box 2 through the fourth air inlet at the end of each exhaust branch pipe 322.

[0054] Then, the dried air dried by the dryer 11 is temporarily stored in the buffer tank 12. When the pressure gauge 13 shows that the pressure in the buffer tank 12 reaches the set value, the control unit 60 controls the flow control valve 23 to open a certain opening according to the signal of the pressure gauge 13. The dried air in the buffer tank 12 is blown into the battery pack packaging box 2 at a certain flow rate through the inflation main pipe 221 and each inflation branch pipe 222. At the same time, the humid air in the battery pack packaging box 2 is discharged through each exhaust branch pipe 322. The air discharged from each exhaust branch pipe 322 converges in the exhaust main pipe 321 and is discharged to the external environment through the fourth air outlet. During the inflation process, the static electricity generated on the battery pack 1 is released to the ground through the conductive rubber pad 27, the exhaust pipe 32 made of metal material, and the static electricity release wire 26.

[0055] Then, the second humidity sensor 50 detects the humidity of the exhaust gas. If the humidity detected by the second humidity sensor 50 is not within the allowable range after the determined inflation time arrives, inflation continues until the humidity detected by the second humidity sensor 50 meets the requirements. The time for continuous inflation can be added to the previously determined inflation time as the inflation time for the next battery pack packaging box 2 containing the battery pack 1.

[0056] After inflation is completed, the control unit 60 controls the first driving member 21 of the inflation mechanism 20 and the second driving member 31 of the exhaust mechanism 30 to return to their original positions, and sends a signal to the conveying mechanism 70. The conveying mechanism 70 transports the battery pack packaging box 2 containing the battery pack 1 that has completed inflation into the subsequent process. Since the battery pack packaging box 2 is relatively airtight, by filling the inside of the battery pack packaging box 2 with dry gas, it can be ensured that condensation will not form on the outer surface of the battery pack 1 due to changes in ambient temperature during transportation, affecting safety.

[0057] In addition, before the battery pack anti-condensation packaging device 100 is used for the first time, an inflation test is required to calibrate the inflation time. The specific process is as follows: First, record the humidity X1 of the external environment during the first test. Open the flow control valve 23 at 100% opening and inflate the battery pack packaging box 2 for a certain time, such as 10 s. Collect the humidity X2 of the exhaust gas detected by the second humidity sensor 50, and calculate the dehumidification rate S = (X1 - X2) / 10.

[0058] Next, record the humidity X3 of the external environment during the second test. Assume the inflation time is T0 and the target humidity is X0, then T0 = (X3 - X0) / S. Open the flow control valve 23 to a certain opening and inflate the battery pack packaging box 2. If the humidity X2 of the exhaust gas detected after the inflation time T0 arrives is greater than the target humidity X0, continue to inflate until the humidity X2 of the exhaust gas meets the standard. Record the time for continuous inflation as T1. According to this, calibrate the inflation time T = T0 + T1. This inflation time T can be set as the inflation time when the battery pack anti-condensation packaging device 100 is used for the first time.

[0059] In summary, the battery pack anti-condensation packaging device provided by the embodiment of the present application dries the input compressed air through the air storage mechanism and temporarily stores it, fills the battery pack packaging box containing the battery pack with the stored dry air through the inflation mechanism, discharges the original gas in the battery pack packaging box to the external environment through the exhaust mechanism, and realizes automatic control through the control unit. It can efficiently fill the inside of the battery pack packaging box containing the battery pack with dry gas, ensure that condensation will not form on the surface of the battery pack due to changes in ambient temperature during transportation, affecting safety, and at the same time can effectively control the material cost of battery pack packaging and transportation.

[0060] As described above, this is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present application, and these should all be covered within the protection scope of the present application.

Claims

1. A battery pack anti-condensation packaging device, characterized in that, Comprising: An air storage mechanism for storing dry air; An inflation mechanism for inflating the stored dry air into a battery pack packaging box containing a battery pack, including a first driving member and an inflation pipe. The first driving member is used to drive the inflation pipe to move so that the inflation pipe is connected to or separated from the battery pack packaging box, and the inflation pipe is connected to the air storage mechanism through a pipeline; An exhaust mechanism for exhausting the original gas in the battery pack packaging box to the external environment, including a second driving member and an exhaust pipe. The second driving member is used to drive the exhaust pipe to move so that the exhaust pipe is connected to or separated from the battery pack packaging box, and the exhaust pipe is communicated with the external environment; And A control unit for controlling the actions of the first driving member and the second driving member.

2. The battery pack anti-condensation packaging device according to claim 1, characterized in that, Further comprising: A first humidity sensor for detecting the humidity of the external environment; And A second humidity sensor for detecting the humidity of the gas discharged from the battery pack packaging box; Wherein, the inflation mechanism further includes a flow control valve installed on the pipeline for regulating the flow rate of the dry air; The control unit is used to control the opening degree of the flow control valve and control the inflation time according to the signals of the first humidity sensor and the second humidity sensor.

3. The dew condensation prevention packaging device for the battery pack according to claim 1, characterized in that Further comprising: A conveying mechanism for transporting a battery pack packaging box containing a battery pack, and the inflation mechanism and the exhaust mechanism are respectively arranged on both sides of the conveying mechanism; Wherein, the control unit controls the actions of the first driving member and the second driving member according to the signal of the conveying mechanism, and sends a signal to the conveying mechanism after inflation is completed.

4. The battery pack anti-condensation packaging device according to claim 2, characterized in that, The air storage mechanism includes a dryer, a buffer tank, and a pressure gauge. The dryer is used to dry the input compressed air. The buffer tank is connected to the dryer and is used to temporarily store dry air. The buffer tank is connected to the inflation pipe through the pipeline. The pressure gauge is installed on the buffer tank for displaying the real-time pressure in the buffer tank; The control unit controls the opening degree of the flow control valve according to the signal of the pressure gauge.

5. The battery pack anti-condensation packaging device according to claim 4, characterized in that, The pipeline includes a hose section and a hard pipe section. The hose section is connected to the inflation pipe, the hard pipe section is connected to the buffer tank, and the flow control valve is installed on the hard pipe section.

6. The battery pack anti-condensation packaging device according to claim 4, characterized in that, The air storage mechanism further includes a compressed air source connected to the dryer for providing compressed air.

7. The battery pack anti-condensation packaging device according to claim 1, characterized in that, The inflation mechanism further includes an electrostatic discharge wire and a conductive rubber pad. One end of the electrostatic discharge wire is connected to the inflation pipe, the other end of the electrostatic discharge wire is grounded, the inflation pipe is a metal part, and the conductive rubber pad is installed on the inflation pipe for contacting the battery pack to release static electricity.

8. The battery pack anti-condensation packaging device according to claim 1, wherein, The inflation pipe includes an inflation main pipe and a plurality of inflation branch pipes. The inflation main pipe is connected to the first driving member and the pipeline. One ends of the plurality of inflation branch pipes are connected to the inflation main pipe, and the other ends of the plurality of inflation branch pipes are used to extend into the battery pack packaging box; The battery pack packaging box is provided with a plurality of through holes, and the plurality of through holes are respectively used for the plurality of inflation branch pipes to extend into. A one-way valve is provided at the inner end of each through hole, and the one-way valve is used to prevent the gas in the battery pack packaging box from flowing out and the valve can be pushed open from the outside to the inside.

9. The battery pack anti-condensation packaging device according to claim 1, wherein, The exhaust pipe includes an exhaust main pipe and a plurality of exhaust branch pipes. The exhaust main pipe is connected to the second driving member and communicates with the external environment. One end of the plurality of exhaust branch pipes is connected to the exhaust main pipe, and the other ends of the plurality of exhaust branch pipes are used to extend into the battery pack packaging box; The battery pack packaging box is provided with a plurality of through holes, and the plurality of through holes are respectively used for the plurality of exhaust branch pipes to extend into. A one-way valve is provided at the inner end of each through hole, and the one-way valve is used to prevent the gas in the battery pack packaging box from flowing out and the valve can be pushed open from the outside to the inside.

10. The battery pack anti-condensation packaging device according to claim 1, characterized in that, The control unit includes a main control module, a power supply module, a communication module, a signal acquisition module, and a driving module. The main control module is used to store and execute set programs and parameters. The power supply module is used to supply power to other modules. The communication module is used to communicate with the conveying mechanism and the PC. The conveying mechanism is used to transport the battery pack packaging box containing the battery pack, and the PC is the upper computer of the battery pack anti-condensation packaging device. The signal acquisition module is used to acquire the signals of the flow control valve, the first humidity sensor, the second humidity sensor, and the pressure gauge. The flow control valve is used to adjust the flow rate of the dry air. The first humidity sensor is used to detect the humidity of the external environment. The second humidity sensor is used to detect the humidity of the gas discharged from the battery pack packaging box. The pressure gauge is used to display the real-time pressure in the gas storage mechanism. The driving module is used to control the actions of the first driving member and the second driving member and the opening degree of the flow control valve.

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