Battery drying device

Abstract

The utility model provides a battery drying device which comprises a box body, a drying tray used for bearing a battery is arranged in the box body, a fan and a plurality of exhaust ducts are arranged on the side wall of the box body, the drying tray is provided with a cavity, one end of the drying tray is provided with an air inlet, the other end of the drying tray is provided with an air outlet, and the air outlet is communicated with the cavity. The cavity is connected with the air inlet and the air outlet, and air blown out by the fan can enter the cavity through the air inlet and is exhausted through the air outlet; the plurality of exhaust ducts comprise a vertical exhaust duct and a horizontal exhaust duct, the horizontal exhaust duct is connected with the air outlet, the horizontal exhaust duct is used for discharging air discharged from the air outlet to the outside of the battery drying device, and the vertical exhaust duct is used for maintaining the internal air pressure of the battery drying device. The battery drying device can improve the battery drying effect.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of batteries, and in particular to a battery drying device. Background Art

[0002] Since the supply and demand of energy do not always match in time and space, the development of society requires energy storage technologies to solve the problem of the mismatch between energy supply and demand in time, and also requires energy storage technologies to cope with sudden energy demands or supply interruptions.

[0003] In the prior art, batteries are usually used as energy storage devices. Among them, lithium iron phosphate batteries are one of the mainstream energy storage batteries at present due to their good safety performance and low price. During the production of lithium iron phosphate batteries, it is necessary to dry the lithium iron phosphate batteries to remove the moisture in them, thereby improving the stability and lifespan of the lithium iron phosphate batteries. At the same time, it can avoid the generation of hydrogen in the lithium iron phosphate batteries due to moisture, increase the internal pressure of the batteries, and cause battery swelling, leakage or damage in extreme cases, and avoid the corrosion of the interior of the lithium iron phosphate batteries caused by moisture. In addition, since the working environment of some lithium iron phosphate batteries is relatively humid, it is also a necessary step to dehumidify and dry the lithium iron phosphate batteries that have been put into use regularly.

[0004] However, current battery drying equipment often uses direct blowing by a fan for drying, resulting in poor drying effect and low hot air utilization rate. Utility Model Content

[0005] The embodiments of the present application provide a battery drying device to solve the technical problems of poor drying effect and low hot air utilization rate of the battery drying device.

[0006] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0007] The embodiments of the present application provide a battery drying device, including: a box body, the box body includes a drying tray for carrying batteries, and a fan and a plurality of exhaust ducts are arranged on the side wall of the box body. Among them, the drying tray has a cavity, and one end of the drying tray has an air inlet and the other end has an air outlet. The cavity is connected to the air inlet and the air outlet, and the gas blown out by the fan can enter the cavity through the air inlet and be discharged through the air outlet;

[0008] The plurality of exhaust ducts include a vertical exhaust duct and a horizontal exhaust duct. The horizontal exhaust duct is connected to the air outlet and is used to discharge the gas discharged from the air outlet to the outside of the battery drying device, and the vertical exhaust duct is used to maintain the internal air pressure of the battery drying device.

[0009] Advantages of the embodiments of the present application: The battery drying device provided by the embodiments of the present application includes a drying tray having a cavity structure, and one end of the drying tray has an air inlet, and the other end has an air outlet, so that gas can enter the drying tray through the air inlet and discharge from the air outlet of the drying tray. Thus, during the battery drying process, the gas can not only dry the battery through the upper part of the battery but also dry the periphery of the battery through the inside of the drying tray, improving the drying effect. At the same time, the cavity structure of the drying tray can reuse the drying gas, realizing the secondary circulation of the drying gas in the cavity of the drying tray and improving the utilization rate of the drying gas. In addition, the embodiments of the present application can discharge the gas in the cavity of the drying tray out of the battery drying device through the horizontal exhaust duct connected to the air outlet to realize the gas circulation in the cavity of the drying tray, and through the vertical exhaust duct provided on the outer wall of the battery drying device to realize the balance of the internal air pressure of the battery drying device, so that the battery drying device remains stable during the drying process.

[0010] In a possible implementation manner, the fan is disposed at the bottom of the box body, the air inlet of the drying tray is disposed close to the fan, and the air outlet of the drying tray is disposed far from the fan;

[0011] Both the air inlet and the air outlet are located above the fan;

[0012] The vertical exhaust duct is located at the top of the box body.

[0013] In a possible implementation manner, the drying tray is a recessed structure with an open upper end, and the side wall of the drying tray further includes an air inlet door and an air outlet door;

[0014] The air inlet door is disposed at the air inlet;

[0015] The air outlet door is disposed at the air outlet;

[0016] Wherein, the air inlet door controls the gas to enter the cavity, and the air outlet door controls the gas to discharge from the cavity.

[0017] In a possible implementation manner, the air inlet door and the air outlet door include a door body and a spring mechanism, and the spring mechanism is used to control the opening and closing of the door body;

[0018] Wherein, the elastic strength of the spring mechanism of the air inlet door is less than the elastic strength of the spring mechanism of the air outlet door;

[0019] When the internal pressure of the battery drying device reaches a first preset pressure, the air inlet door of the drying tray opens and the air outlet door closes;

[0020] When the internal pressure of the battery drying device reaches the second preset pressure, both the air inlet and the air outlet of the drying tray are opened.

[0021] In a possible implementation, the vertical exhaust duct includes an exhaust valve, and the exhaust valve is arranged in the vertical exhaust duct;

[0022] The exhaust valve includes a valve body and a spring mechanism, and the elastic strength of the spring mechanism of the exhaust valve is equal to the elastic strength of the spring mechanism of the air outlet;

[0023] Wherein, when the internal pressure of the battery drying device reaches the second preset pressure, the exhaust valve is opened.

[0024] In a possible implementation, the temperature sensor is located at the inlets of the vertical exhaust duct and the horizontal exhaust duct.

[0025] In a possible implementation, a bracket is arranged at the bottom of the cavity, and a container with an upper opening and a plurality of through holes at the bottom is arranged on the bracket; the top of the container is not higher than the air inlet and the air outlet, and the container is used to accommodate the battery.

[0026] In a possible implementation, a heater is located inside the battery drying device.

[0027] In a possible implementation, the outer surface of the battery drying device includes a temperature increase knob and a temperature decrease knob, and the temperature increase knob and the temperature decrease knob are electrically connected to the heater.

[0028] In a possible implementation, the battery drying device is further provided with a tray support structure, and the tray support structure includes a slide rail and a support structure. The support structure is fixedly connected to the inner wall of the battery drying device, and the drying tray is connected to the support structure through the slide rail.

[0029] In addition to the technical problems solved by the present application, the technical features constituting the technical solution, and the beneficial effects brought by these technical features of the technical solution described above, other technical problems that the battery drying device provided by the present application can solve, other technical features included in the technical solution, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. Description of the Drawings

[0030] The accompanying drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0031] Figure 1 It is a schematic external view of the battery drying device according to the embodiment of the present application;

[0032] Figure 2 This is a schematic structural diagram of the first working state of the battery drying device according to the embodiment of the present application;

[0033] Figure 3 This is a schematic structural diagram of the second working state of the battery drying device according to the embodiment of the present application;

[0034] Figure 4 This is a schematic structural diagram of the third working state of the battery drying device according to the embodiment of the present application;

[0035] Figure 5 This is a schematic structural diagram of the drying tray of the battery drying device according to the embodiment of the present application.

[0036] Explanation of reference numerals:

[0037] 100, battery drying device;

[0038] 110, drying tray; 111, air inlet; 112, air outlet; 113, intake valve; 114, outlet valve; 115, exhaust valve;

[0039] 121, vertical exhaust duct; 122, horizontal exhaust duct;

[0040] 130, fan; 140, temperature sensor; 151, heating knob; 152, cooling knob.

[0041] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0042] In the related art, in order to dry the battery to remove the moisture in the battery, the battery needs to be placed in a drying device and dried by blowing directly with a heating fan. However, the drying effect is poor by the way of blowing directly with a heating fan, and the utilization rate of hot air is poor.

[0043] In view of this, in the embodiment of the present application, by providing a drying tray with a cavity structure, and one end of the drying tray has an air inlet and the other end has an air outlet, so that the gas can enter the drying tray through the air inlet and discharge from the air outlet, and then during the battery drying process, the gas can not only dry the battery from above but also dry the periphery of the battery through the inside of the drying tray, improving the drying effect. At the same time, the cavity structure of the drying tray can recycle the drying gas twice, realizing the secondary circulation of the drying gas in the cavity of the drying tray and improving the utilization rate of the drying gas.

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0045] Figure 1 It is a schematic external view of the battery drying device 100 according to an embodiment of the present application. Figure 2 It is a schematic structural view of the first working state of the battery drying device 100 according to an embodiment of the present application. As Figure 1 shown, a control panel is provided outside the battery drying device 100, and the control panel can display the internal drying temperature and other environmental parameters. A heating-up knob 151 and a cooling-down knob 152 are also provided outside the battery drying device 100, and the heating-up knob 151 and the cooling-down knob 152 are electrically connected to the heater. That is to say, the heating-up knob 151 and the cooling-down knob 152 can control the heater in the battery drying device 100, thereby realizing the adjustment of the internal temperature of the battery drying device 100. The heating-up knob 151 is used to increase the temperature output of the heater, so as to increase the internal temperature of the battery drying device 100, and the cooling-down knob 152 is used to reduce the temperature output of the heater, so as to reduce the internal temperature of the battery drying device 100. The operator adjusts the temperature inside the battery drying device 100 through the heating-up knob 151 and the cooling-down knob 152 according to actual needs, ensuring the constancy of the temperature during the battery drying process.

[0046] Specifically, as Figure 2As shown in the figure, the battery drying device 100 includes a box body. Inside the box body, there is a drying tray 110 for carrying batteries. On the side wall of the box body, there are a fan 130 and multiple exhaust ducts. Among them, the drying tray 110 has a cavity, and one end of the drying tray 110 has an air inlet 111, and the other end has an air outlet 112. The cavity is connected to the air inlet 111 and the air outlet 112. The gas blown by the fan 130 can enter the cavity through the air inlet 111 and be discharged through the air outlet 112. The multiple exhaust ducts include a vertical exhaust duct 121 and a horizontal exhaust duct 122. The horizontal exhaust duct 122 is connected to the air outlet 112 and is used to discharge the gas discharged from the air outlet 112 outside the battery drying device 100. The vertical exhaust duct 121 is used to maintain the internal air pressure of the battery drying device 100. That is to say, when the gas in the battery drying device 100 fills the box body, the gas can still enter the drying tray 110 through the air inlet 111, and after the gas fills the cavity of the drying tray 110, the gas can be discharged from the cavity of the drying tray 110 through the air outlet 112. Further, since the horizontal exhaust duct 122 is provided on the outer wall of the box body of the battery drying device 100 and the horizontal exhaust duct 122 is connected to the air outlet 112, the gas discharged through the air outlet 112 can be discharged outside the battery drying device 100 through the horizontal exhaust duct 122. By providing the drying tray 110 with a cavity structure in this application, the secondary recycling of gas can be realized.

[0047] Optionally, the number of drying trays 110 in the battery drying device 100 can be two, and they are arranged vertically. Preferably, the recess of the drying tray 110 is similar to or the same as the shape of the battery. In this way, the gas entering the drying tray 110 through the air inlet 111 can act better on the battery surface.

[0048] Optionally, the number of horizontal exhaust ducts 122 is two, which are respectively connected to the air outlets 112 of the two drying trays 110. The number of vertical exhaust ducts 121 is one. When the internal pressure of the battery drying device 100 is too high, the vertical exhaust duct 121 can be opened, and thus the internal air pressure of the battery drying device 100 can be balanced.

[0049] In some embodiments of the present application, the blower 130 is disposed at the bottom of the box body. The air inlet 111 of the drying tray 110 is disposed close to the blower 130, and the air outlet 112 of the drying tray 110 is disposed away from the blower 130. Both the air inlet 111 and the air outlet 112 are located above the blower 130. The vertical exhaust duct 121 is located at the top of the box body. Optionally, the air inlet 111 of the drying tray 110 is close to the left side of the box body, the air outlet 112 is close to the right side of the box body, the blower 130 is disposed at the lower left of the box body, and the positions of both the air inlet 111 and the air outlet 112 are above the position of the blower 130. By disposing the blower 130 at the lower left of the box body, it helps to quickly disperse the gas blown out by the air pump into the box body to form air convection. At the same time, this design also helps to reduce the influence of dust and pollutants on the blower 130. By disposing the air outlet 112 away from the blower 130 and the air inlet 111 close to the blower 130, it can ensure that the gas can first enter the drying tray 110 through the air inlet 111 and can ensure that the gas has sufficient time and distance to fully dry the batteries in the drying tray 110.

[0050] In some embodiments of the present application, the drying tray 110 is a concave structure with an open upper end. The side wall of the drying tray 110 further includes an air inlet door 113 and an air outlet door 114. The air inlet door 113 is disposed at the air inlet 111. The air outlet door 114 is disposed at the air outlet 112. Wherein, the air inlet door 113 controls the entry of gas into the cavity, and the air outlet door 114 controls the discharge of gas from the cavity. Combining Figure 5 as shown, Figure 5 is a schematic structural diagram of the drying tray 110 of the battery drying device 100 according to an embodiment of the present application. The air inlet 111 and the air outlet 112 are a section of rectangular parallelepiped channels. The air inlet door 113 is disposed at the end of the air inlet 111 away from the drying tray 110, and the air outlet door 114 is disposed at the end of the air outlet 112 away from the drying tray 110. Preferably, the cross-sectional areas of the air inlet door 113 and the air outlet door 114 are the same as the cross-sectional areas of the air inlet 111 and the air outlet 112, and the cross-sectional shapes are the same. By setting like this, it can effectively control the entry and exit of gas in the drying tray 110 and avoid the situation that the gas enters the drying tray 110 when the box body of the battery drying device 100 is not filled with gas.

[0051] In some embodiments of the present application, the intake valve 113 and the exhaust valve 114 include a valve body and a spring mechanism for controlling the opening and closing of the valve body. Among them, the elastic strength of the spring mechanism of the intake valve 113 is less than that of the spring mechanism of the exhaust valve 114. When the internal pressure of the battery drying device 100 reaches the first preset pressure, the intake valve 113 of the drying tray 110 opens and the exhaust valve 114 closes. When the internal pressure of the battery drying device 100 reaches the second preset pressure, both the intake valve 113 and the exhaust valve 114 of the drying tray 110 open. That is to say, when the internal pressure of the battery drying device 100 reaches the first preset pressure, the intake valve 113 of the drying tray 110 can open and the exhaust valve 114 remains closed, enabling the gas to gradually fill the entire drying tray 110. After the gas fills the entire drying tray 110 and as the fan 130 continues to operate, the internal pressure of the battery drying device 100 can reach the second preset pressure. Since the second preset pressure is greater than the first preset pressure, both the intake valve 113 and the exhaust valve 114 of the drying tray 110 open, thereby enabling the gas to be discharged outside the battery drying device 100 through the horizontal exhaust duct 122. Through this design, the gas flow inside the battery drying device 100 can be realized, enabling the gas in the device to enter and exit at appropriate times in different stages, thus achieving efficient processing of battery drying. Optionally, the first preset pressure is 110 kPa, and the second preset pressure is 120 kPa. The elastic strength of the spring mechanism of the intake valve 113 is 1000 N / m, and the elastic strength of the spring mechanism of the exhaust valve 114 is 2000 N / m.

[0052] In some embodiments of the present application, the vertical exhaust duct 121 includes an exhaust valve 115 disposed in the vertical exhaust duct 121. The exhaust valve 115 includes a valve body and a spring mechanism, and the elastic strength of the spring mechanism of the exhaust valve 115 is equal to that of the spring mechanism of the exhaust valve 114. Among them, when the internal pressure of the battery drying device 100 reaches the second preset pressure, the exhaust valve 115 opens. That is to say, when the internal pressure of the battery drying device 100 reaches the second preset pressure, the intake valve 113, the exhaust valve 114, and the exhaust valve 115 of the drying tray 110 open simultaneously, thereby enabling the gas inside the drying tray 110 to be discharged outside the battery drying device 100 through the horizontal exhaust duct 122, and the gas inside the battery drying device 100 to be discharged outside the battery drying device 100 through the vertical exhaust duct 121, thus ensuring the air pressure balance inside the battery drying device 100. Optionally, the elastic strength of the spring mechanism of the exhaust valve 115 is 2000 N / m.

[0053] In some embodiments of the present application, the temperature sensor 140 is located at the inlets of the vertical exhaust duct 121 and the horizontal exhaust duct 122. By setting it in this way, the temperature of the gas discharged from the battery drying device 100 can be monitored more accurately, which helps to detect the temperature change in a timely manner. When the temperature is too high or too low, the battery drying device 100 can emit an alarm signal, and then the operator can adjust the heater electrically connected thereto through the heating knob 151 and the cooling knob 152, and adjust the internal temperature of the battery drying device 100 through the heater.

[0054] In some embodiments of the present application, a bracket is provided at the bottom of the cavity, and a container with an upper opening and multiple through holes at the bottom is provided on the bracket; the top of the container is not higher than the air inlet 111 and the air outlet 112, and the container is used to accommodate the battery. That is to say, a gas flow channel can be formed between the bottom of the cavity and the bottom of the container on the bracket. When the gas enters the inside of the drying tray 110, the gas can pass through the above flow channel and be discharged through the air outlet 112. When the gas passes through the above flow channel, the gas can dry the periphery of the battery and can realize the secondary utilization of the gas. Since the bottom of the above container has multiple through holes, when the gas passes through the above flow channel, a part of the gas can also pass through the through holes to heat the bottom of the battery, further improving the drying effect. Optionally, the top of the container is at the same horizontal plane as the bottoms of the air inlet 111 and the air outlet 112. Through the above setting, after the gas enters the drying tray 110 through the air inlet 111, it can smoothly enter the above flow channel.

[0055] In some embodiments of the present application, the heater is located inside the battery drying device 100.

[0056] In some embodiments of the present application, the battery drying device 100 is further provided with a tray support structure, and the tray support structure includes a slide rail and a support structure. The support structure is fixedly connected to the inner wall of the battery drying device 100, and the drying tray 110 is connected to the support structure through the slide rail. Through the above setting, the drying tray 110 can be easily pulled out by the operator, which is convenient for taking and placing the battery to be dried. And the internal space of the battery drying device 100 can be more fully utilized within an effective space.

[0057] The following combines Figures 2 to 4 to illustrate the working principle and gas flow direction of the battery drying device 100 during the drying process. Figure 2 It is a schematic structural diagram of the first working state of the battery drying device 100 according to an embodiment of the present application. As Figure 2As shown, in the first working state, the battery drying device 100 is in an initial working state. At this time, the fan 130 and the heater start to work. The gas blown out by the fan 130 diffuses to the right along the bottom of the battery drying device 100 and diffuses upward along the left inner wall of the battery drying device 100. When the gas diffuses upward along the left inner wall of the battery drying device 100, the gas also diffuses upward above the drying tray 110 until the entire battery drying device 100 is filled. At this time, the internal pressure of the battery drying device 100 has not reached the first preset pressure, and the intake valve 113, the outlet valve 114, and the exhaust valve 115 of the drying tray 110 are all not opened. Figure 3 FIG. is a schematic structural diagram of the second working state of the battery drying device 100 according to an embodiment of the present application. As Figure 3 shown, in the second working state, the gas has filled the entire battery drying device 100. At this time, the fan 130 continues to work, causing the internal pressure of the battery drying device 100 to continue to rise. When the internal pressure of the battery drying device 100 reaches the first preset pressure, the intake valve 113 of the drying tray 110 is opened, and the outlet valve 114 and the exhaust valve 115 are both closed. The gas enters the drying tray 110 through the intake port 111, and the gas diffuses inside the drying tray 110 through the gas flow channel formed by the bottom of the cavity of the drying tray 110 and the bottom of the container on the bottom of the cavity until the entire gas flow channel is filled. Figure 4 FIG. is a schematic structural diagram of the third working state of the battery drying device 100 according to an embodiment of the present application. As Figure 4 shown, in the third working state, the gas has filled the entire gas flow channel. At this time, the fan 130 continues to work, causing the internal pressure of the battery drying device 100 to continue to rise. When the internal pressure of the battery drying device 100 reaches the second preset pressure, the intake valve 113, the outlet valve 114, and the exhaust valve 115 of the drying tray 110 are all opened. The excess gas in the gas flow channel can be discharged through the horizontal exhaust duct 122, and the excess gas in the battery drying device 100 can be discharged through the vertical exhaust duct 121, thereby ensuring the air pressure balance inside the battery drying device 100.

[0058] It should be noted that in the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0059] In addition, in this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship 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.

[0060] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery drying device, characterized in that: include: The box includes a drying tray for carrying batteries, and the side walls of the box are provided with a fan and multiple exhaust ducts, wherein: The drying tray has a cavity, and one end of the drying tray has an air inlet, and the other end has an air outlet, the cavity is connected to the air inlet and the air outlet, and the gas blown by the fan can enter the cavity through the air inlet and be discharged through the air outlet; The multiple exhaust ducts include vertical exhaust ducts and horizontal exhaust ducts. The horizontal exhaust ducts are connected to the air outlet. The horizontal exhaust ducts are used to discharge the gas exhausted from the air outlet to the outside of the battery drying device. The vertical exhaust ducts are used to maintain the internal air pressure of the battery drying device.

2. The battery drying device according to claim 1, characterized in that: The fan is arranged at the bottom of the box body, the air inlet of the drying tray is arranged close to the fan, and the air outlet of the drying tray is arranged away from the fan; The air inlet and the air outlet are both located at the upper part of the fan; The vertical exhaust duct is located at the top of the box body.

3. The battery drying device according to claim 1, characterized in that: The drying tray is a concave structure with an open upper end, and the side wall of the drying tray also includes an air inlet door and an air outlet door; The air intake valve is arranged at the air intake port; The air outlet valve is arranged at the air outlet; The inlet valve controls the gas to enter the cavity, and the outlet valve controls the gas to discharge from the cavity.

4. The battery drying device according to claim 3, characterized in that: The air inlet valve and the air outlet valve include a door body and a spring mechanism, and the spring mechanism is used to control the opening and closing of the door body; Wherein, the elastic strength of the spring mechanism of the intake valve is smaller than the elastic strength of the spring mechanism of the outlet valve; When the internal pressure of the battery drying device reaches a first preset pressure, the air inlet door of the drying tray is opened and the air outlet door is closed; When the internal pressure of the battery drying device reaches a second preset pressure, the air inlet door and the air outlet door of the drying tray are both opened.

5. The battery drying device according to claim 4, characterized in that: The vertical exhaust duct includes an exhaust valve, and the exhaust valve is arranged in the vertical exhaust duct; The exhaust valve comprises a valve body and a spring mechanism, and the elastic strength of the spring mechanism of the exhaust valve is equal to the elastic strength of the spring mechanism of the outlet valve; Wherein, when the internal pressure of the battery drying device reaches a second preset pressure, the exhaust valve opens.

6. The battery drying device according to claim 1, characterized in that: The temperature sensors are located at the entrances of the vertical exhaust duct and the horizontal exhaust duct.

7. The battery drying device according to claim 1, characterized in that: A bracket is provided at the bottom of the cavity, and the bracket is provided with an upper opening and a container with multiple through holes at the bottom; the top of the container is not higher than the air inlet and the air outlet, and the container is used to accommodate a battery.

8. The battery drying device according to claim 1, characterized in that: A heater is located in the battery drying device.

9. The battery drying device according to claim 8, characterized in that: The outer surface of the battery drying device includes a temperature increase knob and a temperature decrease knob, and the temperature increase knob and the temperature decrease knob are electrically connected to the heater.

10. The battery drying device according to claim 1, characterized in that: The battery drying device is also provided with a tray support structure, which includes a slide rail and a support structure. The support structure is fixedly connected to the inner wall of the battery drying device, and the drying tray is connected to the support structure through the slide rail.

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