Control method for dehumidification system and dehumidification system

Abstract

The application relates to the technical field of batteries, and particularly provides a control method for a dehumidification system and the dehumidification system, aiming to solve the problem of poor dehumidification timeliness of the existing dehumidification system on a battery compartment. The dehumidification device is arranged to be capable of delivering dry air into the battery compartment, and the control method comprises the following steps: obtaining a dew point temperature Td in the battery compartment; obtaining a detected temperature Tj of a cooling liquid in the battery compartment and / or a preset temperature Ty of the cooling liquid; and selectively delivering the dry air into the battery compartment according to the dew point temperature Td and the detected temperature Tj and / or the preset temperature Ty. The application can deliver the dry air into the battery compartment, can quickly complete the dehumidification of the battery compartment, can reduce the non-uniform flow field and non-uniform temperature in the battery compartment caused by directly dehumidifying the air in the battery compartment, can improve the dehumidification timeliness and dehumidification effect, and can more accurately judge whether there is a condensation risk in the battery compartment, so that the dehumidification of the battery compartment can be more effectively performed.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular provides a control method for a dehumidification system and a dehumidification system. Background Art

[0002] The battery compartment is a space used to store battery modules. The ambient temperature and humidity inside the battery compartment have a direct impact on the performance, safety and life of the battery. Therefore, the dehumidification system of the battery compartment is particularly important.

[0003] In the prior art, when dehumidifying the battery compartment, an air conditioner or dehumidifier is mostly used to directly circulate the air in the battery compartment to discharge condensed water. However, due to the influence of the dehumidification capacity of the dehumidification equipment and the actual air humidity in the cabin, the dehumidification time is long and the dehumidification efficiency is low. At the same time, this dehumidification method will cause the air flow in the battery compartment to lead to uneven flow field and uneven temperature in the battery compartment, resulting in poor dehumidification effect. In addition, there is also the possibility that condensation will be generated in the battery compartment due to untimely dehumidification, which will affect the stability of the batteries in the battery compartment. Summary of the Invention

[0004] The present invention aims to solve the above technical problems at least to a certain extent, that is, to mainly solve the problem that the existing dehumidification system for the battery compartment has poor dehumidification time efficiency for the battery compartment.

[0005] In a first aspect, the present invention provides a dehumidification system for a battery compartment, which is used to dehumidify the battery compartment. The dehumidification system is configured to deliver dry air into the battery compartment; the control method includes the following steps: obtaining the dew point temperature Td in the battery compartment; obtaining the detected temperature Tj of the coolant in the battery compartment and / or the preset temperature Ty of the coolant; and selectively delivering dry air into the battery compartment based on the dew point temperature Td and the detected temperature Tj and / or the preset temperature Ty.

[0006] In the preferred technical solution of the above-mentioned control method for the dehumidification system, the step of "selectively delivering dry air into the battery compartment according to the dew point temperature Td and the detection temperature Tj and / or the preset temperature Ty" specifically includes: determining the lower temperature between the detection temperature Tj and the preset temperature Ty as the reference temperature T0; and selectively delivering dry air into the battery compartment according to the dew point temperature Td and the reference temperature T0.

[0007] In the preferred technical solution of the above-mentioned control method for the dehumidification system, the step of "selectively delivering dry air into the battery compartment based on the dew point temperature Td and the reference temperature T0" specifically includes: calculating a first difference △1 = T0 - Td; comparing the first difference △1 with a preset value A1; and selectively delivering dry air into the battery compartment based on the comparison result; wherein A1 ≥ 0.

[0008] In the preferred technical solution of the above-mentioned control method for the dehumidification system, the step of "selectively delivering dry air into the battery compartment based on the comparison result" specifically includes: if △1≤A1, then delivering dry air into the battery compartment; and / or, if △1>A1, then not delivering dry air into the battery compartment.

[0009] 14. The smoke detector according to claim 13, wherein the smoke detector is configured to detect whether the smoke detector is connected to a control panel, and further comprises a filter, wherein the filter screen is configured to detect whether the smoke detector is connected to the control panel. The filter screen is configured to detect whether the smoke detector is connected to the control panel. The filter screen is configured to detect whether the smoke detector is connected to the control panel.

[0010] In the preferred technical solution of the above-mentioned control method for the dehumidification system, the dehumidification system also includes a second exhaust duct, which is connected to the external environment, and the exhaust port can be selectively connected to the first exhaust duct or the second exhaust duct. Before the dry air is delivered to the battery compartment, the control method includes the following steps: obtaining a first enthalpy value H1 in the battery compartment; obtaining a second enthalpy value H2 in the external environment; and selectively connecting the exhaust port to the first exhaust duct or the second exhaust duct based on the first enthalpy value H1 and the second enthalpy value H2.

[0011] In the preferred technical solution of the above control method for the dehumidification system, the step of selectively connecting the exhaust port to the first exhaust pipe or the second exhaust pipe according to the first enthalpy value H1 and the second enthalpy value H2 specifically includes: if H1≥H2, connect the exhaust port to the second exhaust pipe; if H1<H2, connect the exhaust port to the first exhaust pipe.

[0012] In the preferred technical solution of the above control method for the dehumidification system, after starting to deliver dry air to the battery compartment, the control method further includes the following steps: real-time obtain the current dew point temperature Td' in the battery compartment; obtain the current coolant temperature T0' in the battery compartment; selectively stop delivering dry air to the battery compartment according to the current dew point temperature Td' and the current coolant temperature T0'.

[0013] In the preferred technical solution of the above control method for the dehumidification system, after delivering air with a relatively high humidity to the air dehumidification chamber, the control method further includes the following steps: obtain weather information within a preset time; determine the target dehumidification time according to the weather information; make the dehumidification device dehumidify the air in the air dehumidification chamber at the target dehumidification time.

[0014] In a second aspect, the present invention further provides a dehumidification system, which includes a controller configured to be able to execute the control method for the dehumidification system introduced above.

[0015] In the case of adopting the above preferred technical solution, the present application can deliver dry air into the battery compartment, improve the dehumidification efficiency, reduce the uneven flow field and temperature in the battery compartment caused by directly dehumidifying the air in the battery compartment, improve the dehumidification effect on the battery compartment, and selectively deliver dry air into the battery compartment according to the dew point temperature and the detected temperature and / or preset temperature of the coolant, which can more accurately judge whether there is a condensation risk in the battery compartment, so as to dehumidify the battery compartment more timely and effectively.

[0016] Further, compared with the form of directly comparing the dew point temperature Td and the reference temperature T0, and selectively delivering dry air into the battery compartment according to the comparison result, by first calculating the difference between the reference temperature T0 and the dew point temperature Td, and then comparing the difference with a preset value, and selectively delivering dry air into the battery compartment according to the comparison result, on the one hand, it can avoid misjudgment caused by deviations in obtaining the dew point temperature or the detected temperature, and on the other hand, it can deliver dry air into the battery compartment when the condensation risk is about to occur, so as to dehumidify the battery compartment more timely and completely avoid condensation in the battery compartment.

[0017] Furthermore, by setting up a dehumidification device and an air dehumidification chamber, the present application can first store the dry air after dehumidification in the air dehumidification chamber. When there is a risk of condensation in the battery compartment, the low-humidity air in the air dehumidification chamber is transported to the battery compartment, and the high-humidity air in the battery compartment is transported to the air dehumidification chamber. That is, the dry air after dehumidification in the air dehumidification chamber is used to replace the wet air in the battery compartment, thereby effectively shortening the dehumidification time and improving the dehumidification efficiency. At the same time, the dehumidification device dehumidifies the air with higher humidity transported to the air dehumidification chamber and stores the dry air in the air dehumidification chamber, so as to facilitate the next dehumidification of the battery compartment.

[0018] Furthermore, by setting the exhaust port to be selectively connected to the first exhaust duct or the second exhaust duct, the air with higher humidity in the battery compartment can be selectively discharged into the air dehumidification chamber through the first exhaust duct or the air with higher humidity in the battery compartment can be discharged to the external environment through the second exhaust duct according to the enthalpy value in the battery compartment and the enthalpy value of the external environment. Therefore, the connection mode of the exhaust port of the battery compartment can be reasonably switched according to the humidity of the outdoor air, ensuring that the air with lower dehumidification cost is transported to the air dehumidification chamber for dehumidification, thereby saving more energy.

[0019] Furthermore, after starting to deliver dry air into the battery compartment, by comparing the current dew point temperature in the battery compartment with the current coolant temperature, and selectively stopping delivering dry air into the battery compartment based on the comparison result, it is possible to more accurately determine whether there is still a risk of condensation in the battery compartment. On the one hand, it can avoid stopping delivering dry air into the battery compartment when there is still a risk of condensation in the battery compartment, thereby affecting the dehumidification effect; on the other hand, it can also avoid the problem of energy waste caused by not stopping delivering dry air into the battery compartment when there is no risk of condensation in the battery compartment.

[0020] Furthermore, based on the weather information obtained within the preset time, the target dehumidification time is determined, and the dehumidification device is made to dehumidify the air in the air dehumidification chamber during the target dehumidification time, which can facilitate the selection of a suitable time to dehumidify the air in the air dehumidification chamber. By using the nth moment corresponding to the lowest temperature Tn in the external ambient temperature Ti as the target dehumidification time, the air in the air dehumidification chamber can be dehumidified during the period when the external ambient temperature is lower within the preset time, which can make it easier to remove moisture in the air dehumidification chamber, thereby saving more energy and further improving the user experience.

[0021] In addition, the dehumidification system further provided by the present invention on the basis of the above-mentioned technical solution adopts the above-mentioned control method for the dehumidification system for dehumidification, and thus has the beneficial effects of the above-mentioned control method for the dehumidification system. Compared with the dehumidification system before the improvement, the dehumidification system of the present invention can more effectively dehumidify the battery compartment, has a better dehumidification effect, and has a higher dehumidification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the connection structure of one embodiment of the dehumidification system for a battery compartment of the present invention;

[0024] Figure 2 1 is a schematic diagram of the connection structure of another embodiment of the dehumidification system for a battery compartment of the present invention;

[0025] Figure 3 is a flow chart of a control method for a dehumidification system according to the present invention;

[0026] Figure 4 is a flow chart of one embodiment of a control method for a dehumidification system according to the present invention;

[0027] Figure 5 is a flow chart of another embodiment of a control method for a dehumidification system according to the present invention.

[0028] List of reference numerals:

[0029] 1. Battery compartment; 11. Air inlet; 12. Exhaust outlet; 2. Air dehumidification chamber; 21. Inlet; 22. Outlet; 3. Dehumidification device; 4. Air storage chamber; 41. Air storage cavity; 51. Air inlet pipe; 511. Air inlet valve; 52. First exhaust pipe; 521. First control valve; 53. Second exhaust pipe; 531. Second control valve; 6. Air inlet diversion component; 61. Diverter pipe; 7. Delivery pipe; 71. Delivery valve; 8. Air supply pipe; 81. Air supply valve. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] It should be noted that, in the description of the present invention, terms such as "upper," "lower," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] Based on the problem mentioned in the background art that the existing battery compartment dehumidification uses an air conditioner or a dehumidifier to directly dehumidify the air in the battery compartment, resulting in poor dehumidification effect, the present invention provides a control method for a dehumidification system.

[0034] For details, please refer to Figure 3 , Figure 3 is a flow chart of a control method for a dehumidification system according to the present invention.

[0035] like Figure 3 As shown, the dehumidification system of the present invention dehumidifies the battery compartment 1. The dehumidification system is configured to deliver dry air into the battery compartment 1. The control method of the present invention includes the following steps:

[0036] S1: Obtain the dew point temperature Td in the battery compartment 1;

[0037] S2: Obtaining the detected temperature Tj of the coolant in the battery compartment 1 and / or the preset temperature Ty of the coolant;

[0038] S3: selectively delivering dry air into the battery compartment 1 according to the dew point temperature Td, the detected temperature Tj and / or the preset temperature Ty.

[0039] By obtaining the dew point temperature Td, the detection temperature Tj of the coolant and / or the preset temperature Ty of the coolant, and selectively delivering dry air into the battery compartment 1 based on the dew point temperature Td, the detection temperature Tj and / or the preset temperature Ty, it is possible to more accurately determine whether there is a risk of condensation in the battery compartment 1, and thus better avoid the formation of condensation in the battery compartment 1.

[0040] In a specific embodiment, the dew point temperature Td in the battery compartment 1 is obtained; the detected temperature Tj of the coolant in the battery compartment 1 is obtained, and dry air is selectively delivered to the battery compartment 1 based on the dew point temperature Td and the detected temperature Tj of the coolant.

[0041] Specifically, when the dew point temperature Td exceeds or is about to exceed the detection temperature Tj, dry air is delivered into the battery compartment 1 , thereby dehumidifying the battery compartment 1 in a timely manner.

[0042] In another specific embodiment, the dew point temperature Td in the battery compartment 1 is obtained; the preset temperature Ty of the coolant in the battery compartment 1 is obtained, and dry air is selectively delivered to the battery compartment 1 according to the dew point temperature Td and the detected temperature Tj of the coolant.

[0043] Specifically, when the dew point temperature Td exceeds or is about to exceed the preset temperature Ty, dry air is delivered into the battery compartment 1 , thereby dehumidifying the battery compartment 1 in a timely manner.

[0044] In another possible embodiment, the dew point temperature Td in the battery compartment 1 is obtained; the detected temperature Tj of the coolant in the battery compartment 1 and the preset temperature Ty of the coolant are obtained; and dry air is selectively delivered to the battery compartment 1 based on the dew point temperature Td, the detected temperature Tj and the preset temperature Ty.

[0045] Specifically, the lower temperature between the detection temperature Tj and the preset temperature Ty is first determined as the reference temperature T0. When the dew point temperature Td exceeds or is about to exceed the reference temperature T0, dry air is delivered into the battery compartment 1, thereby dehumidifying the battery compartment 1 in a timely manner.

[0046] Although the above three embodiments can all determine whether there is a risk of condensation in the battery compartment 1, compared with selectively delivering dry air into the battery compartment 1 based on the dew point temperature Td and the detection temperature Tj or based on the dew point temperature Td and the preset temperature Ty, the form of selectively delivering dry air into the battery compartment 1 based on the dew point temperature Td, the detection temperature Tj and the preset temperature Ty can more accurately determine whether there is a risk of condensation in the battery compartment 1.

[0047] It should be noted that the detected temperature Tj of the coolant can be obtained by providing a temperature sensor on the coolant pipeline.

[0048] It should also be noted that, in actual applications, the preset temperature Ty can be obtained through user input, or the preset temperature Ty can be obtained by reading data implanted in the controller of the dehumidification system, etc. Such adjustments and changes to the specific method of obtaining the preset temperature Ty do not deviate from the principles and scope of the present invention, and should be included in the scope of protection of the present invention.

[0049] Exemplarily, the preset temperature Ty is obtained by reading data embedded in a controller of the dehumidification system.

[0050] It should be noted that, in actual applications, the present invention does not impose any limitations on the specific method for obtaining the dew point temperature Td. For example, the relative humidity RH and actual temperature Ts within the battery compartment 1 can be first obtained, and the dew point temperature Td can be determined based on the relative humidity RH and actual temperature Ts. Alternatively, a dew point meter can be directly installed within the battery compartment 1 to directly measure the dew point temperature Td within the battery compartment 1. Such adjustments and changes to the specific method for obtaining the dew point temperature Td do not deviate from the principles and scope of the present invention and are intended to be included within the scope of protection of the present invention.

[0051] Preferably, the step of “obtaining the dew point temperature Td in the battery compartment 1” specifically includes:

[0052] Get the relative humidity RH in battery compartment 1;

[0053] Obtain the actual temperature Ts inside the battery compartment 1;

[0054] Determine the dew point temperature Td based on the relative humidity RH and the actual temperature Ts.

[0055] It should be noted that, in actual applications, those skilled in the art can calculate the dew point temperature Td based on the relative humidity RH and the actual temperature Ts through a calculation formula, or can also obtain the dew point temperature Td based on the relative humidity RH and the actual temperature Ts by looking up a table (such as a psychrometric diagram), etc. Such adjustments and changes to the specific method of determining the dew point temperature Td based on the relative humidity RH and the actual temperature Ts do not deviate from the principles and scope of the present invention, and should be included in the scope of protection of the present invention.

[0056] It should also be noted that since a cooling system and a coolant pipe for cooling the batteries in the battery compartment 1 are provided in the battery compartment 1, the cooling system cools the coolant in the coolant pipe and thus cools the battery compartment 1. The preset temperature Ty of the coolant is the target temperature at which the cooling system cools the coolant, which can be set according to actual needs, that is, after the cooling system cools the coolant to the preset temperature Ty, the cooling system stops working.

[0057] When the external ambient temperature is higher than the preset temperature Ty, the detected temperature Tj of the coolant is higher than the preset temperature Ty. As the cooling system cools the coolant, the detected temperature Tj gradually decreases. When the temperature of the coolant drops to the preset temperature Ty, the cooling system stops working. However, due to the cooling inertia of the cooling system, the detected temperature Tj of the coolant may still be lower than the preset temperature Ty; when the external ambient temperature is lower than the preset temperature Ty, the detected temperature Tj of the coolant will also be lower than the preset temperature Ty.

[0058] Therefore, it is sufficient to ensure that the dew point temperature Td does not exceed the lower one of the detection temperature Tj and the preset temperature Ty.

[0059] The step of “obtaining the detected temperature Tj and / or the preset temperature Ty of the coolant in the battery compartment 1” specifically includes:

[0060] S21: Obtaining the detected temperature Tj and the preset temperature Ty of the coolant in the battery compartment 1;

[0061] Preferably, the step of “selectively delivering dry air into the battery compartment 1 according to the dew point temperature Td, the detected temperature Tj and / or the preset temperature Ty” specifically includes:

[0062] S31: Determine the lower temperature between the detected temperature Tj and the set temperature Ty as the reference temperature T0;

[0063] S32 : Selectively delivering dry air into the battery compartment 1 according to the dew point temperature Td and the reference temperature T0 .

[0064] Through such a setting, the lower temperature between the detection temperature Tj and the set temperature Ty is first determined as the reference temperature T0, and then dry air is selectively delivered to the battery compartment 1 according to the dew point temperature Td and the reference temperature T0. This can ensure that no condensation is generated in the battery compartment 1 when the cooling system in the battery compartment 1 is in various states, thereby further improving the dehumidification effect of the battery compartment 1.

[0065] It should be noted that, in actual applications, those skilled in the art may directly compare the dew point temperature Td with the reference temperature T0, and selectively deliver dry air to the battery compartment 1 based on the comparison result, or may first calculate the difference between the dew point temperature Td and the reference temperature T0, and then compare the difference with a preset value, and selectively deliver dry air to the battery compartment 1 based on the comparison result, or may first calculate the ratio of the dew point temperature Td and the reference temperature T0, and then compare the ratio with a preset value, and selectively deliver dry air to the battery compartment 1 based on the comparison result, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included in the protection scope of the present invention.

[0066] Next see Figure 4 , Figure 4 It is a flow chart of one embodiment of the control method for a dehumidification system of the present invention.

[0067] Preferably, if Figure 4 As shown, the step of “selectively delivering dry air into the battery compartment 1 according to the dew point temperature Td and the reference temperature T0” specifically includes:

[0068] S321: Calculate the first difference Δ1=T0-Td;

[0069] S322: Compare the first difference △1 with the preset value A1;

[0070] S323: selectively delivering dry air into the battery compartment 1 according to the comparison result;

[0071] Among them, A1≥0.

[0072] Through such a setting, compared with directly comparing the dew point temperature Td with the reference temperature T0 and selectively delivering dry air into the battery compartment 1 based on the comparison result, by first calculating the difference between the reference temperature T0 and the dew point temperature Td, and then comparing the difference with a preset value, and selectively delivering dry air into the battery compartment 1 based on the comparison result, on the one hand, it is possible to avoid misjudgment caused by deviations in the acquisition of the dew point temperature or the detection temperature, and on the other hand, it is possible to deliver dry air into the battery compartment 1 when the risk of condensation is about to occur, thereby dehumidifying the battery compartment 1 more promptly and completely avoiding the generation of condensation in the battery compartment 1.

[0073] Preferably, the step of “selectively delivering dry air into the battery compartment 1 according to the comparison result” specifically includes:

[0074] S3231: If △1≤A1, dry air is delivered to battery compartment 1;

[0075] S3232: If △1>A1, dry air is not delivered to the battery compartment 1.

[0076] With this setting, when △1 ≤ A1, it indicates that the dew point temperature is higher than the reference temperature. In this case, the dew point temperature may be higher than the temperature of other objects in the battery compartment 1, indicating that there is a risk of condensation in the battery compartment 1. In this case, dry air needs to be transported into the battery compartment 1 to avoid condensation. When △1 > A1, it indicates that the dew point temperature is lower than the reference temperature. In this case, the dew point temperature is lower than the temperature of all objects in the battery compartment 1, indicating that there is no risk of condensation in the battery compartment 1. In this case, there is no need to transport dry air into the battery compartment 1 to avoid wasting energy.

[0077] It should be noted that those skilled in the art can determine the specific value of A1 according to actual needs.

[0078] For example, A1=1;

[0079] When T0-Td≤1, Td+1≥T0, it indicates that there is a risk of condensation in battery compartment 1. In this case, dry air is delivered to battery compartment 1.

[0080] When T0-Td>1, Td+1<T0, indicating that there is no risk of condensation in the battery compartment 1, and at this time, there is no need to transport dry air into the battery compartment 1, which helps save energy.

[0081] It should be noted that, in actual applications, the present invention does not impose any limitations on the specific method for delivering dry air to the battery compartment 1. For example, outdoor dry air can be directly delivered to the battery compartment 1, or the dehumidification system can be configured to store dry air and the stored dry air can be delivered to the battery compartment 1, etc. Such adjustments and changes to the specific method for delivering dry air to the battery compartment 1 do not deviate from the principles and scope of the present invention and are intended to be included within the scope of protection of the present invention.

[0082] Specifically, see Figure 1 , Figure 1 It is a schematic diagram of the connection structure of one embodiment of the dehumidification system for a battery compartment of the present invention.

[0083] like Figure 1 As shown, the battery compartment 1 of the present invention has an air inlet 11 and an exhaust port 12. A battery module is arranged in the battery compartment 1. The battery compartment 1 is provided with a coolant pipe for cooling the batteries in the battery compartment 1 (not shown in the figure).

[0084] like Figure 1 As shown, the dehumidification system of the present invention includes an air dehumidification chamber 2, an air inlet pipe 51, a first exhaust pipe 52, a fan and a dehumidification device 3. The dehumidification device 3 is used to dehumidify the air in the air dehumidification chamber 2 so as to store the dry air after dehumidification in the air dehumidification chamber 2.

[0085] The air dehumidification chamber 2 has an inlet 21 and an outlet 22. The outlet 22 of the air dehumidification chamber 2 can be connected to the air inlet 11 of the battery compartment 1 through the air inlet pipe 51, so as to transport the dry air stored in the air dehumidification chamber 2 to the battery compartment 1. The exhaust port 12 of the battery compartment 1 is connected to the inlet 21 of the air dehumidification chamber 2 through the first exhaust pipe 52, so as to transport the air with higher humidity in the battery compartment 1 to the air dehumidification chamber 2.

[0086] Among them, the air dehumidification chamber 2, the air intake pipe 51, the battery compartment 1 and the first exhaust pipe 52 are connected in sequence to form a ventilation circuit, and the fan is arranged on the ventilation circuit to transport the dry air in the air dehumidification chamber 2 to the battery compartment 1 and to transport the air with higher humidity in the battery compartment 1 to the air dehumidification chamber 2.

[0087] Through such a setting, the dry air after dehumidification can be stored in the air dehumidification chamber 2 first. When there is a risk of condensation in the battery compartment 1, the dry air in the air dehumidification chamber 2 is transported to the battery compartment 1, and the air with higher humidity in the battery compartment 1 is transported to the air dehumidification chamber 2, that is, the dry air after dehumidification in the air dehumidification chamber 2 is used to replace the air with higher humidity in the battery compartment 1, thereby effectively shortening the dehumidification time and improving the dehumidification efficiency. At the same time, it can also avoid uneven flow field and uneven temperature in the battery compartment 1 caused by directly dehumidifying the air in the battery compartment 1, avoid affecting the stability of the batteries in the battery compartment 1, and greatly improve the dehumidification effect of the battery compartment 1.

[0088] Preferably, the step of “delivering dry air into the battery compartment 1 ” specifically includes:

[0089] The dry air in the air dehumidification chamber 2 is transported to the battery compartment 1 .

[0090] It should be noted that, in actual application, the present invention does not impose any limitation on the specific setting position of the fan, as long as the dry air in the air dehumidification chamber 2 can be transported to the battery compartment 1 and the air with higher humidity in the battery compartment 1 can be transported to the air dehumidification chamber 2. For example, the fan can be set at the air inlet 11 or the exhaust port 12 of the battery compartment 1, or the fan can be set on the first exhaust duct 52, or the fan can be set on the air inlet duct 51, and so on. Such adjustment and change of the specific setting position of the fan does not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0091] Exemplarily, the fan is arranged at the air inlet 11 of the battery compartment 1 (not shown in the figure).

[0092] It should be noted that, in actual application, the present invention does not impose any limitation on the specific setting type of the dehumidification device 3, as long as it can dehumidify the air in the air dehumidification chamber 2, for example, the dehumidification device 3 can be set as a dehumidifier, or the dehumidification device 3 can be set as an air conditioner, etc. Such adjustments and changes to the specific setting type of the dehumidification device 3 do not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0093] Preferably, the dehumidifying device is an air conditioner.

[0094] Preferably, if Figure 1 As shown, the dehumidification system of the present invention also includes a second exhaust pipe 53, which is connected to the external environment. The exhaust port 12 can be selectively connected to the first exhaust pipe 52 or the second exhaust pipe 53. When the exhaust port 12 is connected to the second exhaust pipe 53, the air dehumidification chamber 2 can also be connected to the external environment so that the air in the external environment can enter the air dehumidification chamber 2.

[0095] Through such an arrangement, that is, by setting the exhaust port 12 to be selectively connected to the first exhaust duct 52 or the second exhaust duct 53, when the humidity of the external environment is higher than the humidity in the battery compartment 1, the air in the battery compartment 1 is discharged to the air dehumidification chamber 2 through the first exhaust duct 52, and the air in the air dehumidification chamber 2 is dehumidified by the dehumidification device 3. When the outdoor humidity is lower than the humidity in the battery compartment 1, the high-humidity air in the battery compartment 1 is directly discharged to the external environment, avoiding the high-humidity air in the battery compartment 1 from being transported to the air dehumidification chamber 2 for dehumidification, so that the air with lower humidity always enters the air dehumidification chamber 2, which helps to save energy and further improve the dehumidification effect.

[0096] Next see Figure 5 , Figure 5 is a flow chart of another embodiment of a control method for a dehumidification system according to the present invention.

[0097] Preferably, if Figure 5 As shown, before delivering the dry air into the battery compartment 1, the control method of the present invention further includes the following steps:

[0098] S4: Obtaining a first enthalpy value H1 in the battery compartment 1;

[0099] S5: Obtain the second enthalpy value H2 in the external environment;

[0100] S6 : selectively connecting the exhaust port 12 to the first exhaust line 52 or the second exhaust line 53 according to the first enthalpy value H1 and the second enthalpy value H2 .

[0101] Through such a setting, the air with higher humidity in the battery compartment 1 can be selectively discharged into the air dehumidification chamber 2 through the first exhaust pipe 52 or discharged to the external environment through the second exhaust pipe 53 according to the environmental parameters in the battery compartment 1 and the environmental parameters of the external environment. In this way, the connection mode of the exhaust port 12 of the battery compartment 1 can be reasonably switched to ensure that the air that is easier to dehumidify is always transported to the air dehumidification chamber 2 for dehumidification, thereby saving more energy.

[0102] It should be noted that the exhaust port 12 is not limited to selectively connecting the exhaust port 12 with the first exhaust duct 52 or the second exhaust duct 53 based on the first enthalpy value H1 and the second enthalpy value H2. For example, the exhaust port 12 can also be selectively connected to the first exhaust duct 52 or the second exhaust duct 53 based on the first dew point temperature in the battery compartment and the second dew point temperature in the external environment. Alternatively, the exhaust port 12 can be selectively connected to the first exhaust duct 52 or the second exhaust duct 53 based on the first absolute humidity in the battery compartment and the second absolute humidity in the external environment, and so on. Such adjustments and changes to the specific setting types of the first environmental parameters and the second environmental parameters do not deviate from the principles and scope of the present invention and should be included in the protection scope of the present invention.

[0103] Of course, it is preferred that the exhaust port 12 is selectively connected to the first exhaust line 52 or the second exhaust line 53 according to the first enthalpy value H1 and the second enthalpy value H2.

[0104] Through such a setting, compared with the method of selectively connecting the exhaust port 12 with the first exhaust duct 52 or the second exhaust duct 53 according to the first dew point temperature and the second dew point temperature and the method of selectively connecting the exhaust port 12 with the first exhaust duct 52 or the second exhaust duct 53 according to the first absolute humidity and the second absolute humidity, the method of selectively connecting the exhaust port 12 with the first exhaust duct 52 or the second exhaust duct 53 according to the first enthalpy value H1 and the second enthalpy value H2 can more accurately determine which of the external environment and the air in the battery compartment 1 has a lower dehumidification cost, which helps to save energy.

[0105] It should be noted that, in actual applications, those skilled in the art can measure the first relative humidity, first temperature and first air pressure in the battery compartment 1, and obtain the first enthalpy value H1 by querying the enthalpy-humidity diagram, measure the second relative humidity, second temperature and second air pressure of the external environment, and obtain the second enthalpy value H2 by querying the enthalpy-humidity diagram.

[0106] It should also be noted that, in actual applications, those skilled in the art may directly compare the first enthalpy value H1 and the second enthalpy value H2, and selectively connect the exhaust port to the first exhaust pipe or the second exhaust pipe based on the comparison result. Alternatively, they may first calculate the difference between the first enthalpy value H1 and the second enthalpy value H2, and then compare the difference with a preset value. Based on the comparison result, they may selectively connect the exhaust port 12 to the first exhaust pipe 52 or the second exhaust pipe 53. Alternatively, they may first calculate the ratio of the first enthalpy value H1 to the second enthalpy value H2, and then compare the ratio with a preset value. Based on the comparison result, they may selectively connect the exhaust port 12 to the first exhaust pipe 52 or the second exhaust pipe 53, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included in the protection scope of the present invention.

[0107] Preferably, the step of "selectively connecting the exhaust port to the first exhaust pipe or the second exhaust pipe according to the first enthalpy value H1 and the second enthalpy value H2" specifically includes:

[0108] If H1≥H2, connect the exhaust port 12 to the second exhaust pipe 53;

[0109] If H1<H2, connect the exhaust port 12 to the first exhaust pipe 52.

[0110] With such a setting, in the case of H1≥H2, it indicates that the external air is easier to dehumidify than the air in the battery compartment 1. If the air in the battery compartment 1 is transported to the air dehumidification chamber 2 for dehumidification, more energy consumption is required. If the air in the external environment is transported to the air dehumidification chamber 2 for dehumidification, less energy consumption is required. Therefore, connecting the exhaust port 12 to the second exhaust pipe 53 can avoid transporting the air in the battery compartment 1 to the air dehumidification chamber 2. In the case of H1<H2, it indicates that the air in the battery compartment 1 is easier to dehumidify than the external environment, that is, if the air in the battery compartment 1 is transported to the air dehumidification chamber 2 for dehumidification, less energy consumption is required. If the air in the external environment is transported to the air dehumidification chamber 2 for dehumidification, more energy consumption is required. Therefore, connecting the exhaust port 12 to the first exhaust pipe 52, transporting the air in the battery compartment 1 to the air dehumidification chamber 2, and then enabling the dehumidification device 3 to dehumidify the air discharged into the air dehumidification chamber 2 helps to save energy.

[0111] It should be noted that in practical applications, the present invention does not make any limitation on the specific connection manner in which the exhaust port 12 can selectively be connected to the first exhaust pipe 52 or the second exhaust pipe 53.

[0112] In a specific embodiment, as Figure 1 shown, the dehumidification system of the present invention further includes a first control valve 521 and a second control valve 531. The first control valve 521 is arranged on the first exhaust pipe 52 and is used to control the on-off of the first exhaust pipe 52. The second control valve 531 is arranged on the second exhaust pipe 53 and is used to control the on-off of the second exhaust pipe 53.

[0113] In another specific embodiment, the dehumidification system of the present invention further includes a reversing valve (not shown in the figure). Among them, the first interface of the reversing valve is connected to the first exhaust pipe 52, the second interface of the reversing valve is connected to the second exhaust pipe 53, the third interface of the reversing valve is connected to the exhaust port 12, and the third interface of the reversing valve can selectively be connected to the first interface or the second interface.

[0114] It should be noted that, when the exhaust port 12 is selectively connected to the first exhaust line 52 or the second exhaust line 53 through a reversing valve, an exhaust valve is provided at the exhaust port 12 of the battery compartment 1, and the exhaust valve can open or close the exhaust port 12.

[0115] It should be noted that, in actual applications, those skilled in the art may set an air supply pipeline on the air dehumidification chamber 2 to connect the air dehumidification chamber 2 with the external environment, or may set an air supply pipeline on the first exhaust pipeline 52 to connect the air dehumidification chamber 2 with the external environment, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included in the protection scope of the present invention.

[0116] Preferably, if Figure 1 and Figure 2 As shown, the dehumidification system of the present invention also includes an air supply pipeline 8 and an air supply valve 81. One end of the air supply pipeline 8 is connected to the air dehumidification chamber 2, and the other end of the air supply pipeline 8 is connected to the external environment. The air supply valve 81 is arranged on the air supply pipeline 8 and is used to control the on and off of the air supply pipeline 8.

[0117] Through such a setting, when the humidity in the battery compartment 1 is higher than the humidity of the external environment, the air in the external environment is directly supplied to the air dehumidification chamber 2 through the air supply pipe 8, thereby avoiding the air with higher humidity in the battery compartment 1 from being transported to the air dehumidification chamber 2. It not only saves energy, but also can dehumidify the air in the air dehumidification chamber 2 more quickly, further improving the dehumidification efficiency.

[0118] It should be noted that, in actual applications, those skilled in the art may set the air supply valve 81 as a manual valve, or may set the air supply valve 81 as a solenoid valve, etc. Such adjustments and changes to the specific setting type of the air supply valve 81 do not deviate from the principles and scope of the present invention, and should be included in the protection scope of the present invention.

[0119] Preferably, the air supply valve 81 is a solenoid valve.

[0120] It should be noted that, in actual applications, those skilled in the art can directly set one end of the air intake pipe 51 to be connected to the outlet 22 of the air dehumidification chamber 2, and set the other end of the air intake pipe 51 to be connected to the air inlet 11 of the battery compartment 1, or, the dehumidification system can be set to also have an air storage chamber 41, the outlet 22 of the air dehumidification chamber 2 is connected to the air storage chamber 41, one end of the air intake pipe 51 is connected to the air storage chamber 41, and the other end of the air intake pipe 51 is connected to the air inlet 11 of the battery compartment 1, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention, and should be included in the scope of protection of the present invention.

[0121] The following two embodiments are introduced.

[0122] Example 1:

[0123] like Figure 1 As shown, one end of the air intake pipe 51 is connected to the outlet 22 of the air dehumidification chamber 2, and the other end of the air intake pipe 51 is connected to the air inlet 11 of the battery compartment 1. The dehumidification system also includes an air intake valve 511, which is arranged on the air intake pipe 51 and is used to control the on and off of the air intake pipe 51.

[0124] Example 2:

[0125] Next see Figure 2 , Figure 2 It is a schematic diagram of the connection structure of another embodiment of the dehumidification system for the battery compartment 1 of the present invention.

[0126] like Figure 2 As shown, the dehumidification system of the present invention also has an air storage chamber 41, wherein the outlet 22 of the air dehumidification chamber 2 is connected to the air storage chamber 41, so that the air in the air dehumidification chamber 2 after dehumidification is stored in the air storage chamber 41, one end of the air intake pipe 51 is connected to the air storage chamber 41, and the other end of the air intake pipe 51 is connected to the air intake port 11 of the battery compartment 1, and the air intake valve 511 is arranged on the air intake pipe 51 and is used to control the on and off of the air intake pipe 51.

[0127] Through such a setting, the dry air after dehumidification in the air dehumidification chamber 2 can be stored in the air storage cavity 41 first. When dehumidification is required in the battery compartment 1, the dry air in the air storage cavity 41 is directly transported to the battery compartment 1. At the same time, the air with higher humidity in the battery compartment 1 is transported to the air dehumidification chamber 2, so as to avoid the high humidity air transported from the battery compartment 1 and the low humidity air to be transported to the battery compartment 1 from mixing, thereby causing the humidity of the air transported to the battery compartment 1 to be higher, thereby further improving the dehumidification effect.

[0128] It should be noted that, in actual applications, those skilled in the art may form an air storage chamber 41 in the air dehumidification chamber 2. For example, a partition plate is provided in the air dehumidification chamber 2, and the partition plate divides the air dehumidification chamber 2 into an air dehumidification chamber and an air storage chamber 41. The dehumidification device 3 is used to dehumidify the air in the air dehumidification chamber. After dehumidification is completed, the air in the air dehumidification chamber enters the air storage chamber 41 for storage. Alternatively, an air storage chamber 4 and a delivery pipe 7 may be provided, and an air storage chamber 41 is formed in the air storage chamber 4. One end of the delivery pipe 7 is connected to the air dehumidification chamber 2, and the other end of the delivery pipe 7 is connected to the air storage chamber 41, so as to facilitate the storage of the dehumidified air in the air dehumidification chamber 2 in the air storage chamber 41, and so on. Such adjustments and changes to the specific setting type of the air storage chamber 41 do not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0129] Preferably, if Figure 2 As shown, the dehumidification system of the present invention also includes an air storage chamber 4 and a delivery pipe 7. An air storage cavity 41 is formed in the air storage chamber 4. One end of the delivery pipe 7 is connected to the outlet 22 of the air dehumidification chamber 2, and the other end of the delivery pipe 7 is connected to the air storage cavity 41. A delivery valve 71 is also provided on the delivery pipe 7, and the delivery valve 71 is used to control the on and off of the delivery pipe 7.

[0130] Through such an arrangement, compared with the form of forming an air storage chamber 41 in the air dehumidification chamber 2, by setting the air storage chamber 4 and the delivery pipe 7 and forming the air storage chamber 41 in the air storage chamber 4, it is possible to avoid affecting the space in the air dehumidification chamber 2 due to the setting of the air storage chamber 41, thereby helping to increase the dehumidification space in the air dehumidification chamber 2. At the same time, it can also store more dry air for use, greatly improving the dehumidification capacity of the dehumidification system.

[0131] It should be noted that, in actual application, the present invention does not impose any limitation on the specific setting form of the air dehumidification chamber 2. For example, the air dehumidification chamber 2 can be directly set to have an inlet 21 at one end and an outlet 22 at the other end. Alternatively, a partition can be set in the air dehumidification chamber 2 to divide the air dehumidification chamber 2 into air channels, wherein one end of the air channel is connected to the inlet 21 of the air dehumidification chamber 2, and the other end of the air channel is connected to the outlet 22 in the air dehumidification chamber 2, and so on. Such adjustments and changes to the specific setting form of the air dehumidification chamber 2 do not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0132] Preferably, a partition (not shown in the figure) is provided in the air dehumidification chamber 2, which divides the air dehumidification chamber 2 into at least two air channels, wherein one end of the air channel is connected to the inlet 21 of the air dehumidification chamber 2, and the other end of the air channel is connected to the outlet 22 of the air dehumidification chamber 2.

[0133] Through such a setting, when the dry air after dehumidification in the air dehumidification chamber 2 is transported to the battery compartment 1, the air in the air dehumidification chamber 2 can flow along the air channel as much as possible, thereby avoiding as much as possible the mixing of the dry air in the air dehumidification chamber 2 and the wet air transported to the air dehumidification chamber 2, thereby avoiding affecting the air humidity transported to the battery compartment 1.

[0134] Preferably, the dehumidification system of the present invention also includes a temperature regulating device (not shown in the figure), which is used to regulate the air temperature in the air dehumidification chamber 2 so that the temperature of the dry air delivered to the battery compartment 1 is close to the temperature inside the battery compartment 1.

[0135] By setting up a temperature regulating device, the air in the air dehumidification chamber 2 can be heated or cooled before being transported into the battery compartment 1, so that the temperature of the air to be transported into the battery compartment 1 is adapted to the air temperature in the battery compartment 1, thereby avoiding excessive temperature fluctuations in the battery compartment 1 due to the large difference between the air temperature in the air dehumidification chamber 2 and the air temperature in the battery compartment 1.

[0136] It should be noted that, in actual applications, those skilled in the art may set the temperature control device to be an air conditioner, or may set the temperature control device to include a heating component and a cooling component, wherein the heating component is used to heat the air in the air dehumidification chamber 2, and the cooling component is used to cool the air in the air dehumidification chamber 2, and so on. Such adjustments and changes to the specific setting type of the temperature control device do not deviate from the principles and scope of the present invention, and should be included in the protection scope of the present invention.

[0137] Preferably, the temperature regulating device is an air conditioner.

[0138] By setting the temperature regulating device as an air conditioner, the air in the air dehumidification chamber 2 can be dehumidified and the temperature of the dehumidified air in the air dehumidification chamber 2 can be regulated, thereby making the structure of the dehumidification system simpler.

[0139] It should be noted that, when the dehumidifying device 3 is an air conditioner, there is no need to provide a temperature regulating device.

[0140] Preferably, the dehumidification system of the present invention further includes an air intake diversion component 6 , wherein the air intake diversion component 6 is connected to the air inlet 11 , and the air intake diversion component 6 is used to disperse the air entering the battery compartment 1 from the air inlet 11 to different positions in the battery compartment 1 .

[0141] By setting up the air intake diversion component 6, the dry air after dehumidification can be transported to different positions in the battery compartment 1 through the air intake diversion component 6, so that the dry air can enter the battery compartment 1 more evenly, avoiding uneven flow field in the battery compartment 1.

[0142] It should be noted that, in actual applications, the present invention does not impose any limitation on the specific setting type of the air intake diversion component 6 , as long as it can divert the air delivered to the battery compartment 1 to different positions in the battery compartment 1 .

[0143] In a specific embodiment, Figure 1 and Figure 2 As shown, the air intake diversion component 6 includes a plurality of diversion tubes 61 , one end of each of the diversion tubes 61 is connected to the air intake 11 , and the other end of each of the diversion tubes 61 is distributed at intervals in the battery compartment 1 .

[0144] It should be noted that the shunt tubes 61 can be distributed at intervals along the horizontal direction within the battery compartment 1, or the shunt tubes 61 can be distributed at intervals along the vertical direction within the battery compartment 1, or the shunt tubes 61 can be distributed at intervals along the horizontal and vertical directions within the battery compartment 1.

[0145] In another specific embodiment, the air intake diverter component 6 includes a diverter pipe, which is communicated with the air intake 11 and has a plurality of diverter holes (not shown in the figure) disposed thereon. The plurality of diverter holes are spaced apart and distributed on the diverter pipe.

[0146] Preferably, the diversion component includes a plurality of diversion tubes 61 , one end of each of the diversion tubes 61 is connected to the air inlet 11 , and the other ends of the diversion tubes 61 are distributed at intervals in the battery compartment 1 .

[0147] It should be noted that, in actual applications, those skilled in the art may set the dehumidification system to correspond to only one battery compartment 1, or may set the dehumidification system to correspond to multiple battery compartments 1, and the dehumidification system is used to dehumidify different battery compartments 1, and so on. Such adjustments and changes to the number of battery compartments 1 applicable to the dehumidification system do not deviate from the principles and scope of the present invention, and should be included in the scope of protection of the present invention.

[0148] Preferably, if Figure 1 and Figure 2As shown, there are multiple battery compartments 1, there are multiple first exhaust pipes 52 and they are arranged one-to-one with the battery compartments 1, there are multiple air intake pipes 51 and they are arranged one-to-one with the battery compartments 1, and the exhaust port 12 of each battery compartment 1 is connected to the inlet 21 of the air dehumidification chamber 2 through the first exhaust pipe 52, and the outlet 22 of the air dehumidification chamber 2 is connected to the air inlet 11 of each battery compartment 1 through the air intake pipe 51.

[0149] Through such a setting, the dehumidification system can dehumidify multiple battery compartments 1, thereby improving the dehumidification capacity and greatly reducing costs.

[0150] For example, the number of battery compartments 1 is three, and the number of first exhaust pipes 52 and intake pipes 51 is also three.

[0151] It should be noted that, in actual applications, those skilled in the art may only set the exhaust ports 12 of some battery compartments 1 to be selectively connected to the first exhaust duct 52 or the second exhaust duct 53, and set the exhaust ports 12 of the remaining battery compartments 1 to be directly connected to the first exhaust duct 52; or, the exhaust ports 12 in each battery compartment 1 may be set to be selectively connected to the first exhaust duct 52 or the second exhaust duct 53, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included in the scope of protection of the present invention.

[0152] Preferably, if Figure 1 and Figure 2 As shown, there are multiple second exhaust pipes 53 and they are arranged in a one-to-one correspondence with the battery compartments 1. The exhaust port 12 in each battery compartment 1 is configured to be selectively connected to the first exhaust pipe 52 or the second exhaust pipe 53.

[0153] Specifically, when the dry air is transported into the battery compartment 1 , the fan is started to transport the dry air in the air dehumidification chamber 2 or the air storage chamber 4 into the battery compartment 1 .

[0154] It should be noted that after starting to deliver dry air into the battery compartment 1, those skilled in the art will stop delivering dry air into the battery compartment 1 when the delivery time reaches a preset time, or they may obtain the current humidity in the battery compartment 1 in real time, and when the current humidity is lower than the preset humidity, they will stop delivering dry air into the battery compartment 1. Alternatively, they may obtain the current dew point temperature and the current coolant temperature in the battery compartment 1 in real time, and when the current dew point temperature is lower than the current coolant temperature, they will stop delivering dry air into the battery compartment 1, and so on. Such adjustments and changes to the operating time of the fan do not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0155] The following two scenarios are introduced.

[0156] Scenario 1:

[0157] After starting to deliver dry air into the battery compartment 1, the control method of the present invention further includes the following steps:

[0158] Get the current humidity Hd in the battery compartment 1 in real time;

[0159] Compare the current humidity Hd with the preset humidity H0;

[0160] According to the comparison result, the air in the air dehumidification chamber 2 is selectively stopped from being transported into the battery compartment 1 .

[0161] Through such a setting, the air in the dehumidification chamber 2 can be stopped from being transported into the battery compartment 1 in time when the current humidity is lower than the preset humidity, thereby avoiding the problem of energy waste and further increase in humidity in the battery compartment 1 caused by still transporting the air in the dehumidification chamber 2 into the battery compartment 1 when the humidity in the battery compartment 1 is low.

[0162] Preferably, the step of “selectively stopping the delivery of dry air into the battery compartment 1 according to the comparison result” specifically includes:

[0163] If Hd<H0, the supply of dry air into the battery compartment 1 is stopped.

[0164] Through such a setting, when Hd is less than H0, it indicates that the current humidity in the battery compartment 1 has dropped to within the preset humidity range. At this time, the dry air in the air dehumidification chamber 2 is stopped from being transported into the battery compartment 1 in time, thereby avoiding the problem of energy waste and further increase in humidity in the battery compartment 1 caused by still transporting the dry air in the air dehumidification chamber 2 into the battery compartment 1 when the humidity in the battery compartment 1 is low.

[0165] Preferably, the step of “selectively stopping the delivery of air from the dehumidification chamber 2 to the battery compartment 1 according to the comparison result” specifically includes:

[0166] If Hd≥H0, the dry air is continuously delivered to the battery compartment 1 .

[0167] With such a setting, when Hd≥H0, it indicates that the air humidity in the battery compartment 1 is still high, and the dehumidified air in the air dehumidification chamber 2 still needs to be transported to the battery compartment 1 to reduce the air humidity in the battery compartment 1.

[0168] Scenario 2:

[0169] After starting to deliver dry air into the battery compartment 1, the control method of the present invention further includes the following steps:

[0170] Obtain the current dew point temperature Td' in the battery compartment 1 in real time;

[0171] Get the current coolant temperature T0' in battery compartment 1;

[0172] According to the current dew point temperature Td′ and the current coolant temperature T0′, the supply of dry air into the battery compartment 1 is selectively stopped.

[0173] Through such a setting, it is possible to judge whether the current environment in the battery compartment 1 still has a condensation risk based on the current dew point temperature Td' and the current coolant temperature T0', thereby avoiding stopping the supply of dry air to the battery compartment 1 when there is still a condensation risk in the battery compartment 1, resulting in the inability to effectively dehumidify the battery compartment 1. At the same time, it can also avoid continuing to supply dry air to the battery compartment 1 when there is no condensation risk in the battery compartment 1, resulting in energy waste.

[0174] It should be noted that, in actual applications, those skilled in the art may directly compare the current dew point temperature Td' and the current coolant temperature T0', and selectively stop delivering dry air to the battery compartment 1 based on the comparison result. Alternatively, they may first calculate the difference between the current dew point temperature Td' and the current coolant temperature T0', and then compare the difference with a preset value. Based on the comparison result, they may selectively stop delivering dry air to the battery compartment 1. Alternatively, they may first calculate the ratio of the current dew point temperature Td' and the current coolant temperature T0', and then compare the ratio with a preset value. Based on the comparison result, they may selectively stop delivering dry air to the battery compartment 1, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included in the scope of protection of the present invention.

[0175] Preferably, the step of “selectively stopping the delivery of dry air into the battery compartment according to the current dew point temperature Td′ and the current coolant temperature T0′” specifically includes:

[0176] Calculate the second difference Δ2 = T0'-Td';

[0177] Comparing the second difference △2 with the second preset value A2;

[0178] According to the comparison result, the delivery of dry air into the battery compartment 1 is selectively stopped.

[0179] Preferably, the step of “selectively stopping the delivery of dry air into the battery compartment 1 according to the comparison result” specifically includes:

[0180] If △2≤A2, the dry air is continuously supplied to the battery compartment.

[0181] With such a setting, when △2≤A2, it indicates that there is still a risk of condensation in the battery compartment 1. At this time, the supply of dry air to the battery compartment 1 is not stopped, and the air in the battery compartment 1 can continue to be dehumidified, avoiding premature cessation of the supply of dry air to the battery compartment 1, which would result in ineffective dehumidification of the battery compartment 1.

[0182] Preferably, the step of “selectively stopping the delivery of dry air into the battery compartment 1 according to the current dew point temperature Td′ and the current coolant temperature T0′” specifically includes:

[0183] If Δ2>A2, the supply of dry air into the battery compartment 1 is stopped.

[0184] With such a setting, when △2≤A2, it means that there is no condensation risk in the battery compartment 1. At this time, timely stopping the supply of dry air into the battery compartment 1 helps save energy.

[0185] It should be noted that although both of the above situations can determine whether there is still a risk of condensation in the battery compartment 1 and selectively stop supplying dry air to the battery compartment 1 accordingly, compared with the method of selectively stopping the supply of dry air to the battery compartment 1 based on the current humidity Hd and the preset humidity H0, the method of selectively stopping the supply of dry air to the battery compartment 1 based on the current dew point temperature Td' and the current coolant temperature T0' can more accurately and intuitively determine whether there is still a risk of condensation in the battery compartment 1, thereby more effectively dehumidifying the battery compartment 1 and saving energy to the greatest extent.

[0186] Preferably, after the air with higher humidity is transported into the air dehumidification chamber 2, the control method of the present invention further comprises the following steps:

[0187] Get weather information within the preset time;

[0188] Determine the target dehumidification time based on weather information;

[0189] The dehumidification device 3 is caused to dehumidify the air in the air dehumidification chamber 2 during the target dehumidification time.

[0190] Through such a setting, compared with the method of directly using the dehumidification device 3 to dehumidify the air in the air dehumidification chamber 2, by first obtaining weather information and determining the target dehumidification time based on the weather information, and then using the dehumidification device 3 to dehumidify the air in the air dehumidification chamber 2 at the target dehumidification time, it is possible to easily select the appropriate time to dehumidify the air in the air dehumidification chamber 2, thereby improving the convenience of dehumidification.

[0191] Specifically, the step of "determining the target dehumidification time according to weather information" includes:

[0192] Divide the preset time into i moments;

[0193] According to the weather information, obtain the external ambient temperature Ti corresponding to the i-th moment;

[0194] Determine the lowest temperature Tn among the external ambient temperatures Ti;

[0195] The nth moment corresponding to the lowest temperature Tn is determined as the target dehumidification time;

[0196] Wherein, i>1 and i is a positive integer, 1<n<i and n is a positive integer.

[0197] Through such a setting, the dehumidification device 3 can dehumidify the air in the air dehumidification chamber 2 during the period when the external ambient temperature is low within the preset time, making it easier to remove moisture in the air dehumidification chamber, saving more energy, and further improving the user experience.

[0198] It should be noted that the present invention does not impose any limitation on the preset time. For example, the preset time can be set to 4 hours, 8 hours, 12 hours, 16 hours, 20 hours, 24 hours, or a range consisting of any two of these values.

[0199] Exemplarily, the preset time is 24 hours.

[0200] It should be noted that, in actual applications, the present invention does not impose any limitation on the number i of moments into which the preset time is divided. For example, the preset time can be divided into 2, 3, 4, 5, 6, 7, 8 moments or even more, and so on. Such adjustments and changes to the number of moments into which the preset time is divided do not deviate from the principles and scope of the present invention and should be included in the protection scope of the present invention.

[0201] Exemplarily, the preset time is divided into 8 moments.

[0202] It should be noted that, in actual application, the dehumidification device 3 is not limited to dehumidifying the air in the air dehumidification chamber 2 when the external ambient temperature is low. For example, the dehumidification device 3 can also dehumidify the air in the air dehumidification chamber 2 immediately after stopping the delivery of dry air to the battery compartment 1, or the dehumidification device 3 can also dehumidify the air in the air dehumidification chamber 2 while delivering dry air to the battery compartment 1, and so on. Such adjustment and change of the specific time for the dehumidification device 3 to dehumidify the air in the air dehumidification chamber 2 does not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0203] Of course, it is preferred that the dehumidification device 3 dehumidifies the air in the air dehumidification chamber 2 when the external ambient temperature is low.

[0204] In addition, the present invention also provides a dehumidification system, which includes a controller configured to execute the control method for the dehumidification system described above.

[0205] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A control method for a dehumidification system, characterized in that: The dehumidification system is used to dehumidify the battery compartment. The dehumidification system is configured to deliver dry air into the battery compartment. The control method includes the following steps: Obtaining the dew point temperature Td in the battery compartment; Obtaining a detected temperature Tj of the coolant in the battery compartment and / or a preset temperature Ty of the coolant; selectively delivering dry air into the battery compartment according to the dew point temperature Td, the detected temperature Tj, and / or the preset temperature Ty; The battery compartment has an air inlet and an exhaust port, the dehumidification system includes an air dehumidification chamber, an air inlet pipeline, a first exhaust pipeline, and a dehumidification device, the dehumidification device is used to dehumidify the air in the air dehumidification chamber so as to store the dehumidified dry air in the air dehumidification chamber, the air dehumidification chamber has an inlet and an outlet, the outlet is connected to the air inlet through the air inlet pipeline, and the exhaust port is connected to the inlet through the first exhaust pipeline. The dehumidification system further includes a second exhaust pipeline, the second exhaust pipeline being in communication with the external environment, and the exhaust port being selectively communicable with the first exhaust pipeline or the second exhaust pipeline. Before delivering the dry air into the battery compartment, the control method further includes the following steps: Obtaining a first enthalpy value H1 in the battery compartment; Obtaining a second enthalpy value H2 in the external environment; The exhaust port is selectively connected to the first exhaust line or the second exhaust line according to the first enthalpy value H1 and the second enthalpy value H2.

2. The control method for a dehumidification system according to claim 1, characterized in that: The step of “selectively delivering dry air into the battery compartment according to the dew point temperature Td, the detected temperature Tj, and / or the preset temperature Ty” specifically includes: Determine the lower temperature between the detected temperature Tj and the preset temperature Ty as the reference temperature T0; Dry air is selectively delivered into the battery compartment according to the dew point temperature Td and the reference temperature T0.

3. The control method for a dehumidification system according to claim 2, characterized in that: The step of “selectively delivering dry air into the battery compartment according to the dew point temperature Td and the reference temperature T0” specifically includes: Calculate the first difference △1=T0-Td; Comparing the first difference △1 with a preset value A1; selectively delivering dry air into the battery compartment based on the comparison result; Among them, A1≥0.

4. The control method for a dehumidification system according to claim 3, characterized in that: The step of “selectively delivering dry air into the battery compartment based on the comparison result” specifically includes: If △1≤A1, dry air is delivered into the battery compartment; And / or, if Δ1>A1, dry air is not delivered into the battery compartment.

5. The control method for a dehumidification system according to claim 1, characterized in that: The dehumidification system includes a fan, the air dehumidification chamber, the air intake pipe, the battery compartment and the first exhaust pipe are connected in sequence to form a ventilation circuit. The fan is arranged on the ventilation circuit so as to transport the dry air in the air dehumidification chamber into the battery compartment and transport the air with high humidity in the battery compartment into the air dehumidification chamber; The step of "delivering dry air into the battery compartment" specifically includes: The dry air in the air dehumidification chamber is transported to the battery compartment.

6. The control method for a dehumidification system according to claim 1, characterized in that: The step of selectively connecting the exhaust port to the first exhaust pipe or the second exhaust pipe according to the first enthalpy value H1 and the second enthalpy value H2 specifically includes: If H1 ≥ H2, the exhaust port is connected to the second exhaust pipeline; If H1<H2, the exhaust port is connected to the first exhaust pipe.

7. The control method for a dehumidification system according to claim 2, characterized in that: After starting to deliver dry air to the battery compartment, the control method further includes the following steps: Obtaining the current dew point temperature Td' in the battery compartment in real time; Get the current coolant temperature T0' in the battery compartment; The delivery of dry air into the battery compartment is selectively stopped according to the current dew point temperature Td' and the current coolant temperature T0'.

8. The control method according to any one of claims 5 to 7, characterized in that: After delivering the air with higher humidity to the air dehumidification chamber, the control method further includes the following steps: Get weather information within the preset time; determining a target dehumidification time according to the weather information; The dehumidification device is caused to dehumidify the air in the air dehumidification chamber during a target dehumidification time.

9. A dehumidification system, characterized in that: The dehumidification system includes a controller configured to execute the control method for a dehumidification system according to any one of claims 1 to 8.

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