CN-114074521-B - Vehicle with a vehicle body having a vehicle body support

CN114074521BCN 114074521 BCN114074521 BCN 114074521BCN-114074521-B

Abstract

The present invention relates to a vehicle that adjusts the state of air in a battery assembly. A vehicle (1) is provided with a battery module (12) in which a battery module (10) is housed, an air conditioning device (14) that adjusts and sends out the humidity of air, a communication unit (20) that communicates the air outlet of the air conditioning device (14) with the interior of the battery module (12), an in-module humidity detection unit (62) that detects the humidity of the interior of the battery module (12), an outside air humidity detection unit (72) that detects the humidity of outside air, and a control unit (16) that controls the air conditioning device (14) so that the humidity of the interior of the battery module is equal to or less than the humidity of outside air.

Inventors

Gao Mujing
NARUKE TOSHIAKI

Assignees

株式会社斯巴鲁

Dates

Publication Date: 20260508
Application Date: 20210629
Priority Date: 20200820

Claims (4)

1. A vehicle, comprising: a battery module that accommodates a battery module; An air conditioner that sends out air; A communication unit that communicates a blowout port of the air conditioner with the interior of the battery pack; a regulating chamber located in the middle of the air flow path passing through the communication part and having a space with a larger cross-sectional area for air flow than the communication part; a delivery port that communicates the interior of the battery pack with an external space; A first valve provided between the regulation chamber and the battery pack in the communication portion, for switching on/off of a flow path of the communication portion; A second valve provided between the air conditioner and the conditioning chamber in the communication portion, for switching on/off of a flow path of the communication portion; A third valve provided at the outlet for switching the opening and closing of the outlet; a pressure adjustment unit provided between the air conditioning device and the adjustment chamber in the communication unit, the pressure adjustment unit being capable of changing the pressure of air flowing through the communication unit; An in-module air pressure detection unit that detects an air pressure inside the battery module; an adjusting chamber pressure detecting unit that detects an air pressure inside the adjusting chamber; an external air pressure detecting section for detecting an external air pressure, and A control unit that controls the first valve, the second valve, the third valve, the air conditioner, and the pressure adjusting unit, Wherein when the first valve and the second valve are in a closed state, a space inside the regulating chamber is closed, When the first valve and the third valve are in the closed state, the space inside the battery assembly is sealed, The first valve is opened, the second valve and the third valve are closed, and the space inside the regulating chamber is connected with the space inside the battery assembly to form an opening state, The control section performs an adjustment condition derivation process and an adjustment execution process when the external air pressure is higher than the internal air pressure of the battery pack, The adjustment condition derivation process includes deriving a target adjustment chamber internal air pressure as the internal air pressure target value of the adjustment chamber when the first valve is in the closed state, in such a manner that the target opening air pressure, which is the internal air pressure target value of the adjustment chamber and the battery pack in the open state, becomes the external air pressure, The adjustment execution process includes: and controlling the air conditioner and the pressure adjusting portion by making the first valve and the third valve in a closed state and making the second valve in an open state so as to adjust the internal air pressure of the adjusting chamber to the target adjusting chamber air pressure, and After the internal air pressure of the regulating chamber is regulated, stopping the air conditioner and the pressure regulating part, maintaining the third valve in a closed state, setting the second valve in a closed state, and setting the first valve in an open state when the second valve and the third valve are in a closed state, so that the internal air of the regulating chamber is mixed with the internal air of the battery assembly; the air pressure inside the battery assembly and the external air pressure are equalized by mixing the internal air of the conditioning chamber with the internal air of the battery assembly.
2. The vehicle of claim 1, further comprising: An in-module humidity detection unit for detecting the humidity inside the battery module, and An outside air humidity detection unit that detects the humidity of outside air, Wherein the control unit is configured to, when the humidity of the interior of the battery pack is higher than the humidity of the outside air, open the first valve, the second valve, and the third valve, and control the air conditioning device and the pressure adjustment unit to perform a dehumidification process of reducing the humidity of the interior of the battery pack to a humidity equal to or lower than the humidity of the outside air.
3. A vehicle, comprising: a battery module that accommodates a battery module; An air conditioner that sends out air; A communication unit that communicates a blowout port of the air conditioner with the interior of the battery pack; a regulating chamber located in the middle of the air flow path passing through the communication part and having a space with a larger cross-sectional area for air flow than the communication part; a delivery port that communicates the interior of the battery assembly with an external space; A first valve provided between the regulation chamber and the battery pack in the communication portion, for switching on/off of a flow path of the communication portion; A second valve provided between the air conditioner and the conditioning chamber in the communication portion, for switching on/off of a flow path of the communication portion; A third valve provided at the outlet for switching the opening and closing of the outlet; a pressure adjustment unit provided between the air conditioning device and the adjustment chamber in the communication unit, the pressure adjustment unit being capable of changing the pressure of air flowing through the communication unit; an in-module air pressure detection unit, an in-module temperature detection unit, and an in-module humidity detection unit that detect air pressure, temperature, and humidity, respectively, inside the battery module; An interior pressure detection unit, an interior temperature detection unit, and an interior humidity detection unit that detect the air pressure, temperature, and humidity of the interior chamber, respectively; An outside air pressure detecting unit, an outside air temperature detecting unit, and an outside air humidity detecting unit that detect the outside air pressure, the outside air temperature, and the outside air humidity, respectively, and A control unit that controls the first valve, the second valve, the third valve, the air conditioner, and the pressure adjusting unit, Wherein when the first valve and the second valve are in a closed state, a space inside the regulating chamber is closed, When the first valve and the third valve are in the closed state, the space inside the battery assembly is sealed, The first valve is opened, the second valve and the third valve are closed, and the space inside the regulating chamber is connected with the space inside the battery assembly to form an opening state, The control section sets a target intra-module temperature, which is a target value of the internal temperature of the battery module, based on an operation temperature range of the battery module; Deriving humidity, which does not cause condensation of water vapor in the battery module, as target module internal humidity even if the internal temperature of the battery module is equal to the outside air temperature, and The regulation condition derivation process and the regulation execution process are executed in any of a case where the outside air pressure is higher than the inside air pressure of the battery assembly, a case where the outside air pressure is lower than the inside air pressure of the battery assembly and the inside humidity of the battery assembly is higher than the target inside humidity of the battery assembly, and a case where the outside air pressure is equal to the inside air pressure of the battery assembly and the outside air temperature is lower than the inside temperature of the battery assembly, The adjustment condition derivation process includes: Deriving a target regulation chamber air pressure as an internal air pressure target value of the regulation chamber when the first valve is in a closed state and a target regulation chamber air pressure as an internal temperature target value of the regulation chamber when the first valve is in a closed state, in such a manner that a target opening air pressure as a target internal air pressure target value of the regulation chamber and the battery pack is the external air pressure and a target opening temperature as a target internal temperature target value of the regulation chamber when the regulation chamber and the battery pack are in the open state is the target internal temperature of the battery pack, and Deriving a target conditioning chamber humidity as an internal humidity target value for the conditioning chamber when the first valve is in a closed state based on an internal humidity target value for the conditioning chamber and the battery assembly when the first valve is in the open state and an internal space humidity of the battery assembly when the first valve is in the closed state, The adjustment execution process includes: Controlling the air conditioner and the pressure adjusting part by closing the first valve and the third valve and opening the second valve, thereby adjusting the internal air pressure of the adjusting chamber to the target adjusting chamber air pressure, adjusting the internal temperature of the adjusting chamber to the target adjusting chamber temperature, and adjusting the internal humidity of the adjusting chamber to the target adjusting chamber humidity, and After the internal air pressure, temperature and humidity of the conditioning chamber are adjusted, the air conditioning device and the pressure adjusting section are stopped, the third valve is maintained in a closed state, the second valve is set in a closed state, the first valve is set in an open state with the second valve and the third valve in a closed state, and thereby the internal air of the conditioning chamber is mixed with the internal air of the battery pack, The internal air of the regulating chamber is mixed with the internal air of the battery assembly, so that the internal air pressure of the battery assembly is equal to the external air pressure, the internal temperature of the battery assembly reaches the internal temperature of the target assembly, and the internal humidity of the battery assembly reaches the internal humidity of the target assembly.
4. The vehicle according to claim 3, wherein, The control unit performs a dehumidification process of reducing the humidity of the interior of the battery pack to a humidity equal to or lower than the humidity of the outside air by opening the first, second, and third valves and controlling the air conditioning device and the pressure adjustment unit when the humidity of the interior of the battery pack is higher than the humidity of the outside air.

Description

Vehicle with a vehicle body having a vehicle body support Technical Field The present invention relates to a vehicle. Background For example, patent document 1 discloses a vehicle having a battery assembly (e.g., chi) in which a battery module is stored. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2014-37910 Disclosure of Invention Problems to be solved by the invention The battery assembly may be sealed for the purpose of protecting the battery module or the like. Then, there is a case where a difference occurs between the air in the battery pack and the outside air in terms of the state of the air such as temperature, humidity, or pressure. For example, condensation may occur in the battery pack due to a difference in humidity between the humidity of the air in the battery pack and the humidity of the outside air. When condensation occurs, the insulation resistance of the battery module decreases, and the circuit may be shorted. In this way, there is a possibility that the battery module or the battery assembly is damaged or degradation is promoted as a result of a difference in air state between the air inside the battery assembly and the outside air. It is therefore an object of the present invention to provide a vehicle capable of adjusting the air condition in a battery assembly. Technical scheme for solving problems In order to solve the above problems, a vehicle according to the present invention includes a battery module that houses a battery module, an air conditioner that adjusts and sends out air, a communication unit that communicates an outlet of the air conditioner with the interior of the battery module, an in-module humidity detection unit that detects the humidity of the interior of the battery module, an outside air humidity detection unit that detects the humidity of outside air, and a control unit that controls the air conditioner so that the humidity of the interior of the battery module is equal to or lower than the humidity of outside air. In order to solve the above problems, a vehicle according to the present invention includes a battery module that houses a battery module, an air conditioner that sends out air, a communication unit that communicates an air outlet of the air conditioner with the interior of the battery module, a pressure adjustment unit that is provided in a flow path of the air formed by the communication unit and that changes the pressure of the air flowing through the communication unit, an in-module air pressure detection unit that detects the air pressure in the interior of the battery module, an outside air pressure detection unit that detects the outside air pressure, and a control unit that controls the air conditioner and the pressure adjustment unit so that the air pressure in the interior of the battery module is equal to the outside air pressure. The vehicle may further include a conditioning chamber located in the middle of the air flow path passing through the communication portion, and formed with a space having a larger cross-sectional area through which air flows than the communication portion. Effects of the invention According to the present invention, the state of the air in the battery assembly can be adjusted. Drawings Fig. 1 is a schematic diagram showing the structure of a vehicle according to the present embodiment. Fig. 2is a flowchart illustrating an outline of the operation of the control unit. Fig. 3 is a flowchart illustrating the flow of humidity derivation processing within a target component. Fig. 4 is a flowchart illustrating the flow of the dehumidification process. Fig. 5 is a flowchart illustrating the flow of the pressurization processing. Fig. 6 is a flowchart illustrating the flow of the adjustment condition derivation process. Fig. 7 is a flowchart illustrating a flow of the adjustment execution process. Fig. 8 is a flowchart illustrating the flow of the depressurization processing. Fig. 9 is a flowchart illustrating a flow of the pre-dehumidification process. Fig. 10 is a flowchart illustrating a flow of the process at the low temperature of the outside air. Fig. 11 is a schematic diagram showing a structure of a vehicle according to a modification. Detailed Description Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, other specific numerical values, and the like shown in the embodiment are merely examples for facilitating understanding of the present invention, and the present invention is not limited thereto except for the cases specifically described. In the present specification and drawings, elements having substantially the same functions and structures are denoted by the same reference numerals, and overlapping description thereof is omitted, and elements not directly related to the present invention are not shown. Fig. 1 is a schematic diagram showing the structu