Vehicle

Abstract

The present application relates to a vehicle that adjusts the state of air in a battery assembly. The vehicle (1) is provided with: a battery assembly (12) that houses a battery module (10); an air conditioning device (14) that adjusts the humidity of air and performs delivery; a communication portion (20) that communicates an outlet of the air conditioning device (14) and the inside of the battery assembly (12); an assembly-internal humidity detection portion (62) that detects the humidity of the inside of the battery assembly (12); an outside air humidity detection portion (72) that detects the humidity of outside air; and a control portion (16) that controls the air conditioning device (14) so that the humidity of the inside of the battery assembly is below the humidity of the outside air.

Description

Technical Field

[0001] The present invention relates to a vehicle. Background Art

[0002] For example, Patent Document 1 discloses a vehicle having a battery pack that houses a battery module.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2014-37910 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] The battery pack is sometimes sealed for the purpose of protecting the battery module and the like. As a result, a difference sometimes occurs in the state of the air, such as temperature, humidity, or pressure, between the air inside the battery pack and the outside air. For example, dew condensation sometimes occurs inside the battery pack due to the difference in humidity between the humidity of the air inside the battery pack and the humidity of the outside air. When dew condensation occurs, the insulation resistance of the battery module decreases, and there is a possibility that the circuit may short-circuit. Thus, due to the difference in the air state between the air inside the battery pack and the outside air, there is a possibility of damaging the battery module or the battery pack or accelerating deterioration.

[0008] Therefore, an object of the present invention is to provide a vehicle capable of adjusting the air state inside a battery pack.

[0009] Means for Solving the Problems

[0010] To solve the above problems, the vehicle of the present invention includes: a battery pack that houses a battery module; an air conditioner that adjusts the humidity of air and blows it out; a communication part that connects the air outlet of the air conditioner and the inside of the battery pack; an in-pack humidity detection part that detects the humidity inside the battery pack; an outside-air humidity detection part that detects the humidity of the outside air; and a control part that controls the air conditioner so that the humidity inside the battery pack becomes equal to or less than the humidity of the outside air.

[0011] To solve the above problems, the vehicle of the present invention includes: a battery pack that houses a battery module; an air conditioner that blows out air; a communication part that connects the air outlet of the air conditioner and the inside of the battery pack; a pressure adjustment part that is provided in the air flow path formed by the communication part and can change the pressure of the air flowing through the communication part; an in-pack air-pressure detection part that detects the air pressure inside the battery pack; an outside-air pressure detection part that detects the outside air pressure; and a control part that controls the air conditioner and the pressure adjustment part so that the air pressure inside the battery pack becomes equal to the outside air pressure.

[0012] In addition, the vehicle may also have an adjustment chamber located in the middle of the airflow path through the connecting part, forming a space with a larger cross-sectional area for airflow compared to the connecting part.

[0013] Invention Effects

[0014] According to the present invention, the state of air within the battery assembly can be adjusted. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the structure of the vehicle according to this embodiment.

[0016] Figure 2 It is a flowchart that outlines the operation of the control unit.

[0017] Figure 3 This is a flowchart illustrating the process of exporting humidity within the target component.

[0018] Figure 4 This is a flowchart illustrating the dehumidification process.

[0019] Figure 5 This is a flowchart illustrating the pressurization process.

[0020] Figure 6 This is a flowchart illustrating the process of exporting and processing adjustment conditions.

[0021] Figure 7 It is a flowchart illustrating the process of adjustment and execution.

[0022] Figure 8 This is a flowchart illustrating the decompression process.

[0023] Figure 9 This is a flowchart illustrating the pre-dehumidification process.

[0024] Figure 10 This is a flowchart illustrating the process of handling low-temperature external air.

[0025] Figure 11 It is a schematic diagram showing the structure of a modified vehicle. Detailed Implementation

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in these embodiments are merely illustrative examples to facilitate understanding of the invention and are not intended to limit the invention unless specifically stated otherwise. Furthermore, in this specification and the accompanying drawings, elements having substantially the same function or structure are omitted from repeated description by using the same symbols; additionally, elements not directly related to the present invention are omitted from illustration.

[0027] Figure 1 This is a schematic diagram showing the structure of vehicle 1 according to this embodiment. Vehicle 1 is, for example, an electric vehicle or a hybrid vehicle. Vehicle 1 includes: a battery module 10, a battery pack 12, an air conditioning unit 14, a control unit 16, connecting parts 20a, 20b, and 20c, a pressure regulating unit 22, a regulating chamber 24, a first valve 26, a second valve 28, and a third valve 30. Hereinafter, connecting parts 20a, 20b, and 20c will sometimes be collectively referred to as connecting part 20.

[0028] The battery module 10 is, for example, a secondary battery such as a lithium-ion battery. The battery module 10 is not shown in the diagram, but it can supply power to the motor via an inverter or the like. Furthermore, the battery module 10 can be charged using regenerative power from the motor or power supplied from an external source.

[0029] The battery assembly 12 is, for example, formed as a hollow, flat box. The battery module 10 is housed within the battery assembly 12. An internal space 32 is formed within the battery assembly 12, which is a space where air can circulate when the battery module 10 is housed. The internal space 32 corresponds to the gap between the inner surface of the battery assembly 12 and the battery module 10.

[0030] The air conditioning unit 14 regulates the humidity and temperature of the air and delivers it out. Specifically, the air conditioning unit 14 includes a humidity regulating unit 40, a temperature regulating unit 42, and an air outlet 44.

[0031] The humidity regulating unit 40 receives air from inside the vehicle or from outside. Under the control of the control unit 16, the humidity regulating unit 40 regulates the humidity of the received air. Under the control of the control unit 16, the temperature regulating unit 42 regulates the temperature of the humidified air. The temperature regulating unit 42 then delivers the humidified air out of the outlet 44. Thus, air with regulated temperature and humidity is delivered out of the outlet 44.

[0032] The connecting portion 20 is formed in a tubular shape. One end of the connecting portion 20a is connected to the outlet 44. The other end of the connecting portion 20a is connected to the inlet of the pressure regulating portion 22. One end of the connecting portion 20b is connected to the outlet of the pressure regulating portion 22. The other end of the connecting portion 20b is connected to the regulating chamber 24. One end of the connecting portion 20c is connected to the regulating chamber 24. The other end of the connecting portion 20c is connected to the side of the battery assembly 12.

[0033] That is, the connecting part 20 connects the air outlet 44 of the air conditioning unit 14 and the interior of the battery assembly 12 via the pressure regulating part 22 and the regulating chamber 24. As a result, the air delivered from the air outlet 44 flows through the connecting part 20 and is delivered to the battery assembly 12 via the pressure regulating part 22 and the regulating chamber 24.

[0034] A pressure regulating unit 22 is provided between the air outlet 44 and the regulating chamber 24 of the air conditioning unit 14 in the air flow path formed by the connecting section 20. The pressure regulating unit 22 is, for example, a compressor. The pressure regulating unit 22 is a structure that can change the pressure of the air supplied from the connecting section 20b in response to the pressure of the air supplied from the connecting section 20a.

[0035] The regulating chamber 24 is, for example, formed as a hollow box. The regulating chamber 24 is located midway through the airflow path passing through the connecting part 20, specifically, between the pressure regulating part 22 and the battery assembly 12. Inside the regulating chamber 24, a space with a larger cross-sectional area for airflow than the connecting part 20, namely the regulating chamber space 50, is formed.

[0036] The regulating chamber 24 is configured, for example, such that the volume of the regulating chamber space 50 is equal to the volume of the component internal space 32. The volume of the regulating chamber space 50 represents the volume of the air gap within the regulating chamber 24. The volume of the component internal space 32 represents the volume of the air gap within the battery assembly 12. Furthermore, the regulating chamber 24 is not limited to a structure where the volume of the regulating chamber space 50 and the volume of the component internal space 32 are equal. The volume of the regulating chamber space 50 can, for example, be half or one-third of the volume of the component internal space 32. That is, the regulating chamber 24 can also be configured such that the volume of the regulating chamber space 50 and the volume of the component internal space 32 are in any predetermined relationship.

[0037] A first valve 26 is provided in the connecting portion 20c that connects the regulating chamber 24 and the battery assembly 12. The first valve 26 can switch the opening and closing of the flow path in the connecting portion 20c. A second valve 28 is provided in the connecting portion 20b that connects the pressure regulating portion 22 and the regulating chamber 24. The second valve 28 can switch the opening and closing of the flow path in the connecting portion 20b.

[0038] The battery assembly 12 has an outlet 52 that connects the internal space 32 of the assembly to the external space. The outlet 52 is formed, for example, on a side opposite to the side of the connecting portion 20c in the battery assembly 12. Furthermore, to improve the airtightness of the battery assembly 12, sealing components may be provided between the battery assembly 12 and the connecting portion 20c, or between the battery assembly 12 and the outlet 52. A third valve 30 is provided at the outlet 52. The third valve 30 can switch the opening and closing of the outlet 52.

[0039] When the third valve 30 is open, the internal space 32 of the assembly is connected to the external space. When both the first valve 26 and the third valve 30 are closed, the internal space 32 of the assembly is sealed. When the first valve 26 is open, the internal space 32 of the assembly is connected to the regulating chamber space 50 through the connecting part 20c. When both the first valve 26 and the second valve 28 are closed, the regulating chamber space 50 is sealed. When the second valve 28 is open, the regulating chamber space 50 is connected to the pressure regulating part 22 through the connecting part 20b.

[0040] The battery module 12 is equipped with an internal temperature detection unit 60, an internal humidity detection unit 62, and an internal air pressure detection unit 64. The internal temperature detection unit 60 detects the internal temperature, which represents the air temperature inside the battery module 12. The internal humidity detection unit 62 detects the internal humidity, which represents the air humidity inside the battery module 12. The internal air pressure detection unit 64 detects the internal air pressure, which represents the air pressure inside the battery module 12.

[0041] In vehicle 1, an external temperature detection unit 70, an external humidity detection unit 72, and an external air pressure detection unit 74 are provided on the exterior of the battery assembly 12. The external temperature detection unit 70 detects the external temperature. The external humidity detection unit 72 detects the humidity of the external air. The external air pressure detection unit 74 detects the external air pressure.

[0042] The regulating chamber 24 is equipped with a regulating chamber temperature detection unit 80, a regulating chamber humidity detection unit 82, and a regulating chamber pressure detection unit 84. The regulating chamber temperature detection unit 80 detects the regulating chamber temperature, which indicates the air temperature inside the regulating chamber 24. The regulating chamber humidity detection unit 82 detects the regulating chamber humidity, which indicates the air humidity inside the regulating chamber 24. The regulating chamber pressure detection unit 84 detects the regulating chamber pressure, which indicates the air pressure inside the regulating chamber 24.

[0043] An air supply temperature detection unit 90 and an air supply humidity detection unit 92 are provided at the air outlet 44 of the air conditioning unit 14. The air supply temperature detection unit 90 detects the air supply temperature, which indicates the temperature of the air supplied from the air outlet 44. The air supply humidity detection unit 92 detects the air supply humidity, which indicates the humidity of the air supplied from the air outlet 44. In addition, the humidity inside the unit, the humidity of the outside air, the humidity of the regulated room, and the humidity of the supplied air are relative humidity.

[0044] An air supply pressure detection unit 94 is provided between the pressure regulating unit 22 and the second valve 28 in the connecting part 20b. The air supply pressure detection unit 94 detects the air supply pressure, which represents the pressure of the air delivered from the outlet 44 and passing through the pressure regulating unit 22.

[0045] The control unit 16 is composed of a semiconductor integrated circuit including a central processing unit, a ROM storing programs, and RAM serving as the working area. The control unit 16 obtains detection values ​​detected by the various detection units mentioned above, that is, data indicating the air conditions such as temperature, humidity, or pressure of each part. Based on these obtained detection values, the control unit 16 adjusts the air conditions within the battery assembly 12.

[0046] For example, if the humidity inside the module is higher than the humidity of the outside air, condensation may occur inside the battery module 12. Condensation can cause a decrease in the insulation resistance of the battery module 10. When the insulation resistance decreases and a short circuit occurs, the battery module 10 or battery module 12 may be damaged or its degradation may be accelerated due to overheating.

[0047] Therefore, the control unit 16 controls the air conditioning unit 14, the pressure regulating unit 22, the first valve 26, the second valve 28, and the third valve 30 to reduce the humidity inside the assembly to below the humidity of the outside air. This will be described in detail later, but the control unit 16 dehumidifies the battery assembly 12 by controlling each component to output dry air from the air conditioning unit 14 to the battery assembly 12.

[0048] Additionally, for example, when the pressure difference between the internal and external air pressures of the module increases, the stress on the sealing components of the battery module 12 increases, which may damage the sealing components or accelerate their degradation. When the sealing components are damaged or degraded, the airtightness of the battery module 12 may decrease.

[0049] Therefore, the control unit 16 controls the air conditioning unit 14, the pressure regulating unit 22, the first valve 26, the second valve 28, and the third valve 30 to make the internal air pressure and the external air pressure equal. This will be described in detail later. However, if the internal air pressure is lower than the external air pressure, the control unit 16 pressurizes the battery assembly 12 by supplying air from the air conditioning unit 14 to the battery assembly 12. Conversely, if the internal air pressure is higher than the external air pressure, the control unit 16 depressurizes the battery assembly 12 by expelling air from within the battery assembly 12 to the outside.

[0050] Figure 2 This is a flowchart outlining the operation of the control unit 16. The control unit 16 performs operations related to the main interrupt timing accessed within a specified control cycle. Figure 2 The series of main processes shown.

[0051] First, the control unit 16 obtains the detection values ​​from various detection units (S10). Specifically, the control unit 16 obtains the latest values ​​of the module internal temperature, module internal humidity, module internal air pressure, outside air temperature, outside air humidity, outside air pressure, regulated indoor temperature, regulated indoor humidity, regulated indoor air pressure, supply air temperature, supply air humidity, and supply air pressure. Furthermore, the control unit 16 can also obtain the temperature of the battery module 10 from a detection unit (not shown) that detects the temperature of the battery module 10 itself.

[0052] Next, the control unit 16 performs a target humidity export process (S11) to export the target humidity value within the module. The target humidity export process will be described in detail later. The target humidity within the module will be described later, but it is at least set below the humidity of the outside air and is used when adjusting the air condition within the battery module 12.

[0053] Next, the control unit 16 determines whether the humidity inside the module is lower than the humidity of the outside air (S12). If the humidity inside the module exceeds the humidity of the outside air (S12 no), the control unit 16 performs a dehumidification process to dehumidify the battery module 12 (S13). The dehumidification process will be described in detail later.

[0054] Furthermore, if the humidity inside the module is lower than the humidity of the outside air (as in S12), the control unit 16 determines whether the outside air pressure is greater than the value obtained by adding a predetermined value α to the module's internal air pressure (S14). The predetermined value α represents the absolute value of the error that treats the module's internal air pressure and the outside air pressure as approximately equal, and is preset.

[0055] If the external air pressure is greater than the value obtained by adding a predetermined value α to the internal air pressure of the component (as in S14), the control unit 16 performs a pressurization process to increase the internal air pressure of the component (S15). The pressurization process will be described in detail later.

[0056] In addition, if the external air pressure is less than or equal to the internal air pressure of the component plus a predetermined value α (S14 no), the control unit 16 determines whether the external air pressure is less than or equal to the internal air pressure of the component minus the predetermined value α (S16).

[0057] If the external air pressure is less than the value obtained by subtracting the specified value α from the internal air pressure of the component (S16), the control unit 16 determines whether the internal humidity of the component is below the target internal humidity of the component derived in step S11 (S17).

[0058] When the humidity inside the module is below the target humidity (as in S17), the control unit 16 performs a pressure reduction process (S18) to decrease the air pressure inside the module. The pressure reduction process will be described in detail later.

[0059] If the humidity inside the module is higher than the humidity inside the target module (S17), the control unit 16 performs a pre-dehumidification process to dehumidify the inside of the battery module 12 before reducing the air pressure inside the module (S19).

[0060] Here, when the internal air pressure of the module is reduced, the internal temperature of the module decreases with the reduction, and sometimes the internal humidity of the module also increases significantly. If the internal air pressure of the module is reduced when the internal humidity is higher than the target internal humidity, the internal humidity of the module after reduction may be higher than the humidity of the outside air. Therefore, the control unit 16 performs a pre-dehumidification process before performing the pressure reduction process to ensure that the internal humidity of the module is below the target internal humidity. Thus, even if the control unit 16 performs the pressure reduction process at the next main interrupt timer after the pre-dehumidification process, it can prevent condensation from forming inside the battery module 12. The pre-dehumidification process will be described in detail later.

[0061] In addition, if the outside air pressure is greater than or equal to the value obtained by subtracting the specified value α from the internal air pressure of the component (No in S16), the control unit 16 determines whether the outside air temperature is lower than the internal air temperature of the component (S20).

[0062] When the outside temperature is lower than the internal temperature of the component (S20), the control unit 16 performs processing when the outside temperature is relatively low, i.e., processing when the outside temperature is low (S21).

[0063] Here, the air near the inner surface of the battery module 12 easily exchanges heat with the outside air through the battery module 12. For example, when the outside temperature is lower than the temperature inside the module, such as at night, the air near the inner surface of the battery module 12 is cooled by the outside air, and condensation may occur on the inner surface of the battery module 12. Therefore, by performing a low-temperature outside air processing, the control unit 16 can ensure that the humidity inside the battery module 12 is at a level that prevents condensation, even if the air inside the battery module 12 is cooled by the outside air. Thus, even if the outside temperature drops, the control unit 16 can prevent condensation inside the battery module 12 in advance. The low-temperature outside air processing will be described in detail later.

[0064] If the outside temperature is higher than the temperature inside the module (S20: No), the control unit 16 ends a series of processes and waits until the next main interrupt timing. In this case, the air inside the battery module 12 is maintained at a state where the humidity inside the module is lower than the humidity of the outside air, and the air pressure inside the module and the air pressure outside the module are approximately equal.

[0065] Figure 3 This is a flowchart illustrating the process of extracting humidity from the target module (S11). In the process of extracting humidity from the target module, even if the air inside the battery module 12 becomes the same temperature as the outside air, the control unit 16 will extract the humidity inside the module, such that water vapor in the air inside the battery module 12 will not condense, as the humidity inside the target module.

[0066] First, the control unit 16 sets a target value, i.e., the target internal temperature of the module (S30), as the internal temperature of the module. For example, the control unit 16 sets the target internal temperature of the module based on the temperature of the battery module 10 and the operating temperature range of the battery module 10. The operating temperature range of the battery module 10 is, for example, 20°C to 40°C, but the specific value can be arbitrarily set according to the type of battery module 10, etc. If the current temperature of the battery module 10 is within the operating temperature range, the control unit 16 can also set the current temperature of the battery module 10 as the target internal temperature of the module. In addition, if the current temperature of the battery module 10 exceeds the upper limit of the operating temperature range or is lower than the lower limit, the control unit 16 can also set the median value of the operating temperature range, etc., as the target internal temperature of the module. Furthermore, the target internal temperature of the module is not limited to the illustrated method and can be derived by any method.

[0067] Next, the control unit 16 assumes that condensation occurs when the current air temperature inside the battery assembly 12 becomes the outside air temperature and derives the dew point temperature (S31). Specifically, the control unit 16 sets the obtained current outside air temperature as the dew point temperature.

[0068] Next, the control unit 16 derives a boundary absolute humidity (S32) representing the absolute humidity, which is the boundary between the presence and absence of condensation, based on the dew point temperature. Furthermore, the absolute humidity here is expressed as weight absolute humidity (g / kg).

[0069] Next, the control unit 16, based on the boundary absolute humidity derived in step S32 and the target module internal temperature set in step S30, derives a boundary relative humidity (S33) that represents the boundary between condensation and non-condensation. That is, assuming the air inside the battery module 12 is at the target module internal temperature and the boundary relative humidity, condensation should begin to occur when the air temperature drops to the outside temperature. Thus, if the target module internal humidity is set lower than the boundary relative humidity, condensation can be prevented even if the air inside the battery module 12 drops to the outside temperature.

[0070] Therefore, the control unit 16 derives the humidity inside the target component based on the boundary relative humidity derived in step S33 (S34). For example, the control unit 16 derives the humidity inside the target component by subtracting a predetermined value from the boundary relative humidity. The predetermined value can be a constant or a variable that changes with the temperature inside the target component, etc.

[0071] Figure 4 This is a flowchart illustrating the dehumidification process (S13). Before dehumidification, the first valve 26, the second valve 28, and the third valve 30 are all in the closed state.

[0072] The control unit 16 first sets the target value of the supply air temperature, i.e., the target supply air temperature (S40). For example, the control unit 16 sets the target component internal temperature set during the humidity export process (S11) of the target component internal temperature as the target supply air temperature.

[0073] Next, the control unit 16 sets the target value of the supply air humidity, i.e., the target supply air humidity (S41). For example, the control unit 16 sets the target component humidity exported in the target component humidity export process (S11) as the target supply air humidity.

[0074] Next, the control unit 16 sets a target value for the air supply pressure, i.e., the target air supply pressure (S42). For example, the control unit 16 sets the target air supply pressure by adding a predetermined value to the outside air pressure. That is, the target air supply pressure is a value higher than the outside air pressure.

[0075] Next, the control unit 16 starts supplying air from the air outlet 44 of the air conditioning unit 14, and causes the pressure regulating unit 22 to start pressurizing (S43). At this time, the control unit 16 supplies air with the supply air temperature and supply air humidity set to the target supply air temperature and target supply air humidity to the air conditioning unit 14. In addition, the control unit 16 activates the pressure regulating unit 22 to make the supply air pressure the target supply air pressure.

[0076] Next, the control unit 16 determines whether the air supply pressure has reached or exceeded the target air supply pressure (S44). If the air supply pressure has not reached or exceeded the target air supply pressure (S44), the control unit 16 determines whether a predetermined time has elapsed since the start of pressurization (S45). If the predetermined time has not elapsed (No in S45), the control unit 16 returns to the processing in step S44. If the predetermined time has elapsed (Yes in S45), the control unit 16 considers it a timeout and proceeds to the processing in step S46. Furthermore, the control unit 16 causes the air conditioning unit 14 to stop supplying air and the pressure regulating unit 22 to stop pressurization (S46), thus ending the dehumidification process.

[0077] When the supply air pressure reaches or exceeds the target supply air pressure (as in S44), the control unit 16 opens the first valve 26, the second valve 28, and the third valve 30 (S47). As a result, the air supplied from the pressure regulating unit 22, due to its higher pressure than the outside air pressure, moves towards the outside space through the regulating chamber 24 and the battery assembly 12. At this time, the air in the regulating chamber 50 and the air in the assembly's internal space 32 are replaced by air supplied from the pressure regulating unit 22. By replacing the air in the assembly's internal space 32 with dry air supplied from the air conditioning unit 14, the humidity inside the assembly approaches the target humidity level.

[0078] After opening each valve, the control unit 16 determines whether the temperature inside the component is consistent with the temperature inside the target component (S48).

[0079] If the temperature inside the component is inconsistent with the temperature inside the target component (S48 No), the control unit 16 determines whether a predetermined time has elapsed since the point when the first valve 26, the second valve 28, and the third valve 30 were all set to the open state (S49). If the predetermined time has not elapsed (S49 No), the control unit 16 returns to the processing of step S48. If the predetermined time has elapsed (S49 Yes), the control unit 16 considers it a timeout and proceeds to the processing of step S50. Furthermore, the control unit 16 closes the first valve 26, the second valve 28, and the third valve 30 (S50). Then, the control unit 16 stops the air supply of the air conditioning unit 14 and stops the pressurization of the pressure regulating unit 22 (S46), ending the dehumidification process.

[0080] If the temperature inside the module is the same as the temperature inside the target module (S48), the control unit 16 determines whether the humidity inside the module is the same as the humidity inside the target module (S51).

[0081] If the humidity inside the component is inconsistent with the humidity inside the target component (S51: No), the control unit 16 determines whether a predetermined time has elapsed since the point in time when the first valve 26, the second valve 28, and the third valve 30 were all set to the open state (S52). Furthermore, the predetermined time in step S52 can be the same as the predetermined time in step S49, or it can be a longer time than the predetermined time in step S49. If the predetermined time has not elapsed (S52: No), the control unit 16 returns to the processing of step S51. If the predetermined time has elapsed (S52: Yes), the control unit 16 considers it a timeout and proceeds to the processing of step S50.

[0082] When the humidity inside the component matches the humidity inside the target component (as in S51), the control unit 16 closes the first valve 26, the second valve 28, and the third valve 30 at that time (S50). Thus, the humidity inside the component is maintained at the humidity inside the target component. Furthermore, the control unit 16 stops the air supply from the air conditioning unit 14 and stops the pressurization of the pressure regulating unit 22 (S46), ending the dehumidification process.

[0083] Furthermore, if the dehumidification process ends after a specified time in step S52, the humidity inside the module may not match the target humidity inside the module. However, by repeatedly executing... Figure 4 The main processing can gradually bring the humidity inside the component closer to the target humidity inside the component.

[0084] Figure 5This is a flowchart illustrating the pressurization process (S15). To summarize the pressurization process, the control unit 16 first adjusts the air state of the regulating chamber 50 while the regulating chamber space 50 and the component internal space 32 are separated and not connected. Then, the control unit 16 connects the regulating chamber space 50 and the component internal space 32. This mixes the air state of the regulating chamber space 50 and the air state of the component internal space 32. After the air is fully mixed, the control unit 16 separates the regulating chamber space 50 and the component internal space 32 again. Thus, the air state of the component internal space 32 becomes the desired state. The pressurization process will now be described in detail.

[0085] First, before performing adjustments to the controlled indoor space 50, the control unit 16 performs an adjustment condition export process (S60) to export various adjustment conditions required for the adjustment. Examples of adjustment conditions include, for instance, target values ​​for supply air temperature, supply air humidity, or supply air pressure. The adjustment condition export process will be described in detail later.

[0086] Next, the control unit 16 performs a regulation execution process (S61) to perform adjustments based on the derived adjustment conditions. During this process, air is actually supplied from the air conditioning unit 14, and adjustments are performed in the order outlined above. The regulation execution process will be described in detail later.

[0087] Figure 6 This is a flowchart illustrating the process of adjusting condition derivation (S60). Hereinafter, the configuration where the regulating room space 50 and the component's internal space 32 are connected, in other words, the configuration where the first valve 26 is open and the second valve 28 and the third valve 30 are closed, is sometimes referred to as the "open configuration." Furthermore, the air temperature, humidity, and pressure in the open configuration are sometimes referred to as the open temperature, open humidity, and open pressure, respectively.

[0088] The control unit 16 first outputs the target start-up pressure as the target value of the start-up pressure and the target start-up temperature as the target value of the start-up temperature (S70).

[0089] Here, it is desired that the final internal air pressure of the module matches the external air pressure. That is, the target internal air pressure of the module, which is the target value of the internal air pressure, is equal to the external air pressure. In addition, when the internal space 32 of the module and the regulating room space 50 are separated from the open state, the internal air pressure of the module after separation will not change from the open air pressure before separation. Therefore, the control unit 16 sets the external air pressure as the target open air pressure.

[0090] In addition, when separating the internal space 32 of the component from the ventilation state and the internal space 50 of the adjustment chamber, the temperature inside the separated component does not change from the ventilation temperature before separation. Therefore, the control unit 16 sets the target internal temperature of the component set during the derivation process of the previous target internal humidity derivation process (S11) as the target ventilation temperature.

[0091] Next, the control unit 16 derives a target regulated chamber air pressure as a target value for the air pressure inside the adjustment chamber and a target regulated chamber temperature as a target value for the temperature inside the adjustment chamber (S71).

[0092] Here, if the volume of the air in the communication part 20c is omitted, the volume Vi of the air in the space in the ventilation state is as shown in the following formula (1), and becomes the value obtained by adding the volume VB of the air in the internal space 32 of the component and the volume VD of the air in the internal space 50 of the adjustment chamber.

[0093] Vi = VB + VD ··· (1)

[0094] In addition, the target ventilation air pressure is set as Pi, the target ventilation temperature is set as Ti, the target regulated chamber air pressure is set as PD2, and the target regulated chamber temperature is set as TD2. When switching from the adjustment chamber 24 alone to the ventilation state, the Boyle-Mariotte law (ボイルシャルルの法則) shown in the following formula (2) holds. The left side of formula (2) represents the state of the air in the ventilation state. The right side of formula (2) represents the state of the air in the adjustment chamber 24 alone.

[0095] Pi × Vi / Ti = PD2 × VD / TD2 ··· (2)

[0096] Substituting formula (1) into formula (2) and arranging, the following formula (3) is derived.

[0097] Pi / Ti × (VB + VD) / VD = PD2 / TD2 ··· (3)

[0098] As described above, the external air pressure is set as the target ventilation air pressure Pi, and the target internal temperature of the component is set as the target ventilation temperature. Therefore, the left side of formula (3) becomes a constant. In this way, the control unit 16 can derive the target regulated chamber air pressure PD2 and the target regulated chamber temperature TD2 that satisfy the relationship of formula (3).

[0099] The target indoor air pressure PD2 is regulated by the supply air pressure, and therefore depends on the range of pressures that can be output using the pressure regulating unit 22. Therefore, the control unit 16 determines any pressure within the pressure range of the pressure regulating unit 22 as the target indoor air pressure PD2. For example, if the outside air pressure is within the pressure range of the pressure regulating unit 22, the control unit 16 sets the outside air pressure as the target indoor air pressure PD2. Conversely, if the outside air pressure is not within the pressure range of the pressure regulating unit 22, the control unit 16 sets the pressure within the pressure range closest to the outside air pressure as the target indoor air pressure PD2. Furthermore, the control unit 16 determines the target indoor temperature TD2 based on the determined target indoor air pressure PD2 and equation (3).

[0100] Next, the control unit 16 outputs the target supply air pressure as the target value of the supply air pressure and the target supply air temperature as the target value of the supply air temperature (S72). For example, the control unit 16 sets the target regulating room air pressure PD2 as the target supply air pressure and the target regulating room temperature TD2 as the target supply air temperature.

[0101] Furthermore, the control unit 16 can also derive the target supply air temperature based on the target regulated indoor temperature TD2 and the current regulated indoor temperature. For example, if the target regulated indoor temperature TD2 is lower than the current regulated indoor temperature, the control unit 16 can also set the target supply air temperature lower than the target regulated indoor temperature TD2 to make the regulated indoor temperature reach the target regulated indoor temperature TD2 as soon as possible.

[0102] Next, the control unit 16 exports the target open humidity as the target value for the open humidity (S73). Here, when the module interior space 32 and the regulating room space 50 are separated from the open state, the module interior humidity after separation does not change from the open humidity before separation. Therefore, the control unit 16 sets the target module interior humidity exported in the target module interior humidity export process (S11) as the target open humidity.

[0103] Next, the control unit 16 outputs the target indoor humidity as the target value for adjusting indoor humidity (S74).

[0104] Here, the amount of water vapor in the air in the open-circuit state is equal to the total amount of water vapor in the air in the component interior space 32 and the air in the regulated interior space 50 when the component interior space 32 and the regulated interior space 50 are separated. For example, it is assumed that the volume of air in the component interior space 32 and the volume of air in the regulated interior space 50 are equal. Thus, the relationship shown in Equation (4) is derived between the target absolute humidity hi in the open-circuit state, the current absolute humidity hB in the component interior space 32, and the target absolute humidity hD in the regulated interior space 50. Furthermore, the left side of Equation (4) is the result of adding the absolute humidity hi of the component interior space 32 portion in the open-circuit state and the absolute humidity hi of the regulated interior space 50 portion in the open-circuit state.

[0105] hi + hi = hB + hD ···(4)

[0106] Therefore, the control unit 16 derives the target absolute humidity hi in the on-state from the target on-state humidity and the target on-state temperature. Additionally, the control unit 16 derives the current absolute humidity hB of the module interior space 32 from the current module interior humidity and the current module interior temperature. Furthermore, the control unit 16 applies the target absolute humidity hi in the on-state and the current absolute humidity hB of the module interior space 32 to Equation (4) to derive the target absolute humidity hD of the regulated indoor space 50. Then, the control unit 16 derives the target regulated indoor humidity from the target absolute humidity hD of the regulated indoor space 50 and the target regulated indoor temperature.

[0107] Next, the control unit 16 exports the target supply air humidity as the target value of the supply air humidity (S75), and ends the adjustment condition export process. For example, the control unit 16 sets the target regulated indoor humidity as the target supply air humidity.

[0108] Furthermore, the control unit 16 can also derive the target supply air humidity based on the target regulated indoor humidity and the current regulated indoor humidity. For example, if the target regulated indoor humidity is lower than the current regulated indoor humidity, the control unit 16 can set the target supply air humidity lower than the target regulated indoor humidity to make the regulated indoor humidity reach the target regulated indoor humidity as soon as possible.

[0109] Figure 7 This is a flowchart illustrating the process of regulating execution (S61). Before the regulating execution process is performed, the first valve 26, the second valve 28, and the third valve 30 are all in the closed state.

[0110] First, the control unit 16 opens the second valve 28 (S80). Next, the control unit 16 starts supplying air from the outlet 44 of the air conditioning unit 14 and starts pressurizing the pressure regulating unit 22 (S81). At this time, the control unit 16 sets the air temperature supplied by the air conditioning unit 14 to the target air temperature determined by the adjustment condition export process, and the air humidity to the target air humidity determined by the adjustment condition export process. Additionally, the control unit 16 activates the pressure regulating unit 22 to set the air pressure to the target air pressure determined by the adjustment condition export process. With the second valve 28 open and the first valve 26 closed, the state of the air in the regulating chamber 24 is regulated by the air passing through the pressure regulating unit 22.

[0111] Next, the control unit 16 determines whether the adjustment of the air state in the regulating chamber 24 is complete (S82). For example, if the control unit 16 determines that the adjustment of the regulating chamber 24 is complete when the temperature in the regulating chamber is the same as the temperature in the target regulating chamber, the humidity in the regulating chamber is the same as the humidity in the target regulating chamber, and the air pressure in the regulating chamber is the same as the air pressure in the target regulating chamber. Furthermore, it is not limited to the condition that the temperature, humidity, and air pressure are all the same; the adjustment of the regulating chamber 24 can also be determined to be complete if at least one of the temperature, humidity, and air pressure is the same.

[0112] If the adjustment of the regulating chamber 24 is completed (S82 Yes), the control unit 16 proceeds to step S84. If the adjustment of the regulating chamber 24 is not completed (S82 No), the control unit 16 determines whether a predetermined time has elapsed since the air conditioning unit 14 started supplying air (S83). If the predetermined time has not elapsed (S83 No), the control unit 16 returns to step S82. If the predetermined time has elapsed (S83 Yes), the control unit 16 considers it a timeout and proceeds to step S84.

[0113] In step S84, the control unit 16 stops the air supply from the air conditioning unit 14 and stops the pressurization of the pressure regulating unit 22 (S84). Furthermore, the control unit 16 sets the second valve 28 to the closed state (S85).

[0114] Next, the control unit 16 changes the first valve 26 from the closed state to the open state (S86). As a result, the regulating chamber space 50 and the component internal space 32 are opened, and the air in the regulating chamber 24 and the air in the battery component 12 are mixed.

[0115] After setting the module to the open state, the control unit 16 determines whether the internal air pressure is consistent with the external air pressure (S87). If the internal air pressure is inconsistent with the external air pressure (No in S87), the control unit 16 determines whether a predetermined time has elapsed since the point when the first valve 26 was opened (S88). If the predetermined time has not elapsed (No in S88), the control unit 16 returns to the processing in step S87. If the predetermined time has elapsed (Yes in S88), the control unit 16 considers it a timeout and closes the first valve 26 (S89), ending the adjustment execution process.

[0116] When the internal air pressure of the component is the same as the external air pressure (S87), the control unit 16 determines whether the internal humidity of the component is the same as the internal humidity of the target component (S90). When the internal humidity of the component is the same as the internal humidity of the target component (S90), the control unit 16 closes the first valve 26 at that time (S89) and ends the adjustment execution process.

[0117] If the humidity inside the component is inconsistent with the humidity inside the target component (S90: No), the control unit 16 determines whether a predetermined time has elapsed since the point when the first valve 26 was opened (S91). Furthermore, the predetermined time in step S91 can be the same as the predetermined time in step S88, or it can be a longer time than the predetermined time in step S88. If the predetermined time has not elapsed (S91: No), the control unit 16 returns to the processing of step S90. If the predetermined time has elapsed (S91: Yes), the control unit 16 considers it a timeout and closes the first valve 26 (S89), ending the adjustment execution process.

[0118] Furthermore, if the adjustment process ends after a predetermined time in step S88, the internal air pressure of the module may not be consistent with the external air pressure. Additionally, if the adjustment process ends after a predetermined time in step S91, the internal humidity of the module may not be consistent with the target internal humidity of the module. However, through repeated execution... Figure 7 The main processing can gradually bring the air pressure inside the component closer to the external air pressure, and can also gradually bring the humidity inside the component closer to the humidity inside the target component.

[0119] Figure 8 This is a flowchart illustrating the pressure reduction process (S18). Before the pressure reduction process, the first valve 26, the second valve 28, and the third valve 30 are all closed. Furthermore, before the pressure reduction process, the internal pressure of the component is higher than the external pressure.

[0120] The control unit 16 first opens the third valve 30 (S100). This allows a portion of the air inside the battery assembly 12 to move through the outlet 52 towards an external space where the pressure is lower than inside the battery assembly 12. Consequently, the air pressure inside the assembly naturally decreases and approaches the external air pressure.

[0121] The control unit 16 determines whether the internal air pressure of the component is consistent with the external air pressure (S110). If the internal air pressure of the component is consistent with the external air pressure (S110 is yes), the control unit 16 closes the third valve 30 at that time (S120) to end the pressure reduction process.

[0122] If the internal air pressure and external air pressure of the component are inconsistent (No in S110), the control unit 16 determines whether a predetermined time has elapsed since the point when the third valve 30 was opened (S130). If the predetermined time has not elapsed (No in S130), the control unit 16 returns to the processing in step S110. If the predetermined time has elapsed (Yes in S130), the control unit 16 considers it a timeout and closes the third valve 30 (S120), ending the pressure reduction process.

[0123] Figure 9 This is a flowchart illustrating the process of pre-dehumidification treatment (S19). The pre-dehumidification treatment (S19) is essentially performed using the same process as the pressurization treatment (S15). That is, the control unit 16 performs adjustment condition derivation processing (S60) in the pre-dehumidification treatment, and then performs adjustment execution processing (S61). Therefore, to avoid repetition, detailed explanations are omitted. Furthermore, in the pre-dehumidification treatment, the specific values ​​of the various adjustment conditions derived through the adjustment condition derivation processing sometimes differ from those in the pressurization treatment.

[0124] Figure 10 This is a flowchart illustrating the process of handling cold air (S21). The cold air handling (S21) is essentially performed in the same manner as the pressurization process (S15). That is, the control unit 16 performs adjustment condition derivation processing (S60) during the cold air handling, and then performs adjustment execution processing (S61). Therefore, to avoid repetition, detailed explanations are omitted. Furthermore, in the cold air handling, the specific values ​​of the various adjustment conditions derived through the adjustment condition derivation processing sometimes differ from those in the pressurization process.

[0125] As described above, in this embodiment, the control unit 16 of the vehicle 1 controls the air conditioning unit 14 to reduce the humidity inside the battery pack 12 to below the humidity of the outside air. Therefore, in this embodiment of the vehicle 1, the humidity, as an example of the air condition inside the battery pack 12, can be adjusted. As a result, in this embodiment of the vehicle 1, condensation inside the battery pack 12 can be prevented, and the promotion of damage or deterioration of the battery module 10 or the battery pack 12 can be suppressed.

[0126] Furthermore, in this embodiment, the control unit 16 of the vehicle 1 controls the air conditioning unit 14 and the pressure regulating unit 22 to make the internal air pressure of the battery pack 12 equal to the external air pressure. Therefore, in this embodiment of the vehicle 1, the air pressure, for example, can be regulated within the battery pack 12. As a result, in this embodiment of the vehicle 1, for example, damage or deterioration of the sealing components of the battery pack 12 can be suppressed, and the battery module 10 and the battery pack 12 can be used for a long time.

[0127] Furthermore, in the vehicle 1 of this embodiment, a regulating chamber 24 is provided midway through the airflow path via the connecting portion 20. No components such as the battery module 10 that could obstruct airflow are disposed within the regulating chamber 24. Therefore, in the vehicle 1 of this embodiment, the state of the air within the regulating chamber 24 can be reliably adjusted to any desired state. Moreover, in the vehicle 1 of this embodiment, the state of the air within the regulating chamber 24 reflects the state of the air within the battery assembly 12; therefore, the state of the air within the battery assembly 12 can be reliably adjusted.

[0128] Furthermore, in the vehicle 1 of this embodiment, a regulating chamber 24 is provided. Therefore, even if gas is generated from the battery module 10, the generated gas can be contained in the regulating chamber 24 to prevent the generated gas from being sent out into the external space.

[0129] Figure 11 This is a schematic diagram showing the structure of a modified vehicle 100. The vehicle 100 has an air conditioning unit 114 instead of an air conditioning unit 14. The air conditioning unit 114 differs from the air conditioning unit 14 in that it omits the temperature adjustment section 42 and the air supply temperature detection section 90.

[0130] The air conditioning unit 114 is, for example, a cooling device. The humidity control unit 40 of the air conditioning unit 114 generates air with the desired humidity by forcibly reducing the amount of water vapor in the air by making the temperature of the received air lower than the dew point temperature. Therefore, the temperature of the air delivered from the outlet 44 of the air conditioning unit 114 is lower than the desired temperature.

[0131] In the vehicle 100, a temperature regulating unit 142 is provided in the connecting section 20a. The temperature regulating unit 142 is, for example, a heater. The temperature regulating unit 142 is capable of heating the air delivered from the outlet 44 and setting it to a desired air supply temperature. An air supply temperature detection unit 90 is provided between the temperature regulating unit 142 and the pressure regulating unit 22 in the connecting section 20a. The air supply temperature detection unit 90 detects the temperature of the air heated by the temperature regulating unit 142, i.e., the air supply temperature.

[0132] The control unit 16 of vehicle 100, like that of vehicle 1 in the above embodiment, controls the air conditioning unit 114 to make the humidity inside the battery pack 12 lower than the humidity of the outside air. Therefore, in vehicle 100, as in vehicle 1, the humidity, which is an example of the air condition inside the battery pack 12, can be adjusted.

[0133] Furthermore, the control unit 16 of vehicle 100, like that of vehicle 1 in the above embodiment, controls the air conditioning unit 114 and the pressure regulating unit 22 to make the internal air pressure and external air pressure of battery pack 12 equal. Therefore, in vehicle 100, as in vehicle 1, the air pressure, which is an example of the air state inside battery pack 12, can be regulated.

[0134] The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to these embodiments. It will be apparent to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these modifications naturally fall within the technical scope of the present invention.

[0135] For example, in the above embodiments and modifications, the humidity inside the component is lower than the humidity of the outside air, and the air pressure inside the component is equal to the air pressure outside. However, the control unit 16 may also perform control to make the humidity inside the component lower than the humidity of the outside air, omitting the control to make the air pressure inside the component equal to the air pressure outside. Furthermore, the control unit 16 may also perform control to make the air pressure inside the component equal to the air pressure outside, omitting the control to make the humidity inside the component lower than the humidity of the outside air.

[0136] Furthermore, in the above embodiments and modifications, an adjustment chamber 24 is provided. However, the adjustment chamber 24 may also be omitted. In this case, the control unit 16 can directly adjust the air state inside the battery assembly 12. However, by providing the adjustment chamber 24 as described above, the air state inside the battery assembly 12 can be adjusted more reliably.

[0137] Symbol Explanation

[0138] 1. 100 vehicles

[0139] 10 Battery Modules

[0140] 12 Battery Components

[0141] 14, 114 Air conditioning units

[0142] 16 Control Department

[0143] Connecting parts 20, 20a, 20b, 20c

[0144] 22 Pressure Regulation Section

[0145] 24. Adjustment Room

[0146] 44. Blowout

[0147] 50 Adjusting indoor space

[0148] 62. Humidity detection unit within the component.

[0149] 64. Internal air pressure detection unit

[0150] 72. External Air Humidity Detection Department

[0151] 74 External air pressure detection unit.

Claims

1. A vehicle comprising: A battery assembly that houses a battery module; An air conditioning unit that delivers air. A connecting section that connects the air outlet of the air conditioning unit to the interior of the battery assembly; The regulating chamber is located in the middle of the airflow path through the connecting part, and has a larger cross-sectional area for airflow compared to the connecting part. The outlet connects the internal and external spaces of the battery assembly. A first valve is disposed between the regulating chamber and the battery assembly in the connecting section, and is used to switch the opening and closing of the flow path of the connecting section; The second valve is disposed between the air conditioning unit and the regulating chamber in the connecting part, and is used to switch the opening and closing of the flow path of the connecting part; The third valve is located at the outlet and is used to switch the opening and closing of the outlet. A pressure regulating unit is provided in the connecting part between the air conditioning unit and the regulating chamber, and is capable of changing the pressure of the air flowing in the connecting part; An internal air pressure detection unit detects the internal air pressure of the battery assembly. The regulating chamber pressure detection unit detects the air pressure inside the regulating chamber; External air pressure detection unit, which detects external air pressure; as well as The control unit controls the first valve, the second valve, the third valve, the air conditioning unit, and the pressure regulating unit. When the first valve and the second valve are in the closed state, the interior space of the regulating chamber is sealed. When the first valve and the third valve are in the closed state, the internal space of the battery assembly is sealed. The configuration where the first valve is open, the second and third valves are closed, and the interior space of the regulating chamber is connected to the interior space of the battery assembly is defined as the "open" configuration. When the external air pressure is higher than the internal air pressure of the battery assembly, the control unit performs adjustment condition derivation processing and adjustment execution processing. The adjustment condition derivation process includes: deriving a target regulating chamber pressure, which is the target internal pressure of the regulating chamber and the battery assembly in the open state, in such a way that the target opening pressure becomes the external pressure. This target regulating chamber pressure is used as the target internal pressure of the regulating chamber when the first valve is in the closed state. The adjustment execution process includes: By closing the first valve and the third valve and opening the second valve, the air conditioning unit and the pressure regulating unit are controlled, thereby adjusting the internal air pressure of the regulating chamber to the target regulating chamber air pressure; and After adjusting the internal air pressure of the regulating chamber, the air conditioning unit and the pressure regulating unit are stopped, the third valve is kept closed, and the second valve is set to the closed state. When the second valve and the third valve are closed, the first valve is set to the open state, so that the internal air of the regulating chamber is mixed with the internal air of the battery assembly. The internal air of the regulating chamber is mixed with the internal air of the battery assembly to make the internal air pressure of the battery assembly equal to the external air pressure.

2. The vehicle according to claim 1, further comprising: The component has an internal humidity detection unit that detects the humidity inside the battery component. and The outdoor air humidity detection unit measures the humidity of the outside air. When the humidity inside the battery assembly is higher than the humidity of the outside air, the control unit opens the first valve, the second valve, and the third valve, and controls the air conditioning unit and the pressure regulating unit to perform dehumidification treatment to reduce the humidity inside the battery assembly to below the humidity of the outside air.

3. A vehicle comprising: A battery assembly that houses a battery module; An air conditioning unit that delivers air. A connecting section that connects the air outlet of the air conditioning unit to the interior of the battery assembly; The regulating chamber is located midway through the airflow path of the connecting part, and has a larger cross-sectional area for airflow compared to the connecting part. The outlet connects the internal and external spaces of the battery assembly. A first valve is disposed between the regulating chamber and the battery assembly in the connecting section, and is used to switch the opening and closing of the flow path of the connecting section; The second valve is disposed between the air conditioning unit and the regulating chamber in the connecting part, and is used to switch the opening and closing of the flow path of the connecting part; The third valve is located at the outlet and is used to switch the opening and closing of the outlet. A pressure regulating unit is provided in the connecting part between the air conditioning unit and the regulating chamber, and is capable of changing the pressure of the air flowing in the connecting part; The module includes an internal air pressure detection unit, an internal temperature detection unit, and an internal humidity detection unit, which respectively detect the internal air pressure, temperature, and humidity of the battery module. The regulating chamber includes an indoor pressure detection unit, an indoor temperature detection unit, and an indoor humidity detection unit, which respectively detect the air pressure, temperature, and humidity inside the regulating chamber. The system includes an external air pressure detection unit, an external air temperature detection unit, and an external air humidity detection unit, which respectively detect external air pressure, external air temperature, and external air humidity; and The control unit controls the first valve, the second valve, the third valve, the air conditioning unit, and the pressure regulating unit. When the first valve and the second valve are in the closed state, the interior space of the regulating chamber is sealed. When the first valve and the third valve are in the closed state, the internal space of the battery assembly is sealed. The configuration where the first valve is open, the second and third valves are closed, and the interior space of the regulating chamber is connected to the interior space of the battery assembly is defined as the "open" configuration. The control unit sets a target internal temperature of the component based on the operating temperature range of the battery module, and this target internal temperature of the component is used as the target value of the internal temperature of the battery module. The humidity level at which water vapor does not condense inside the battery module even when the internal temperature of the battery module is equal to the external temperature is derived as the target internal humidity of the module; and The adjustment condition derivation process and adjustment execution process are performed in any of the following cases: when the external air pressure is higher than the internal air pressure of the battery assembly; when the external air pressure is lower than the internal air pressure of the battery assembly and the internal humidity of the battery assembly is higher than the internal humidity of the target assembly; and when the external air pressure is equal to the internal air pressure of the battery assembly and the external air temperature is lower than the internal temperature of the battery assembly. The adjustment condition export process includes: To make the target opening pressure, which is the target internal pressure of the regulating chamber and the battery assembly in the said open state, the external pressure is used, and to make the target opening temperature, which is the target internal temperature of the regulating chamber and the battery assembly in the said open state, the target regulating chamber pressure and the target regulating chamber temperature are derived in a manner that allows the target regulating chamber internal pressure and the target regulating chamber internal temperature to be the target internal temperature of the battery assembly in the said open state. The target regulating chamber pressure is the target internal pressure of the regulating chamber when the first valve is closed, and the target regulating chamber temperature is the target internal temperature of the regulating chamber when the first valve is closed. Based on the target humidity values ​​inside the regulating chamber and the battery assembly when the chamber is in the open state, and the humidity inside the battery assembly when the first valve is closed, a target humidity level inside the regulating chamber is derived. This target humidity level is used as the target humidity value inside the regulating chamber when the first valve is closed. The adjustment execution process includes: By closing the first valve and the third valve and opening the second valve, the air conditioning unit and the pressure regulating unit are controlled, thereby adjusting the internal air pressure of the regulating chamber to the target regulating chamber air pressure, adjusting the internal temperature of the regulating chamber to the target regulating chamber temperature, and adjusting the internal humidity of the regulating chamber to the target regulating chamber humidity; and After adjusting the internal air pressure, temperature, and humidity of the regulating chamber, the air conditioning unit and the pressure regulating section are stopped. The third valve is kept closed, and the second valve is also closed. With both the second and third valves closed, the first valve is opened, thereby mixing the internal air of the regulating chamber with the internal air of the battery assembly. By mixing the internal air of the regulating chamber with the internal air of the battery assembly, the internal air pressure of the battery assembly is equal to the external air pressure, the internal temperature of the battery assembly reaches the target internal temperature, and the internal humidity of the battery assembly reaches the target internal humidity.

4. The vehicle according to claim 3, wherein, When the humidity inside the battery assembly is higher than the humidity of the outside air, the control unit opens the first valve, the second valve, and the third valve, and controls the air conditioning unit and the pressure regulating unit to perform dehumidification treatment to reduce the humidity inside the battery assembly to below the humidity of the outside air.

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