Vehicle

Abstract

The present disclosure provides a vehicle that can remove hydrogen sulfide that has been produced inside a battery pack by means of a simple configuration, and, in particular, without the need for an exhaust unit that requires motive force from an exhaust fan or the like. This vehicle 1 has a battery pack 10. The battery pack includes a sulfide battery 110, a hydrogen sulfide remover 121, and a packaging 130 that accommodates the sulfide battery and the hydrogen sulfide remover. The packaging has an opening part 131 that allows the inside of the packaging to communicate with the outside of the vehicle, and the opening part has a ventilation film 131a. The hydrogen sulfide remover is provided such that the inside of the packaging communicates with the outside of the vehicle via the hydrogen sulfide remover and the opening part. The opening part is provided at a position where negative pressure is produced when the vehicle is traveling.

Description

vehicle

[0001] The present disclosure relates to vehicles.

[0002] A battery pack having a battery and an outer container housing the battery is known. When the battery is a sulfide-based battery containing a sulfide-based compound as an electrolyte, the sulfide-based compound may react with water to generate hydrogen sulfide. In response to this, a technology for removing hydrogen sulfide from the battery pack has been developed.

[0003] For example, Patent Document 1 discloses a battery comprising an exterior body and a power generating element that includes a sulfur-based material and is enclosed within the exterior body and disposed inside the exterior body, the exterior body comprising a communication port, a hydrogen sulfide removal section, and an exhaust section, the communication port communicating between the inside of the exterior body and the outside of the exterior body, the hydrogen sulfide removal section and the exhaust section being provided in the communication port, the exhaust section directing hydrogen sulfide generated due to the sulfur-based material to the communication port, and the hydrogen sulfide removal section removing the hydrogen sulfide directed to the communication port by the exhaust section.

[0004] Japanese Patent Application Laid-Open No. 2018-073802

[0005] Battery packs having sulfide-based batteries are sometimes installed in vehicles such as electric vehicles and hybrid vehicles. From the viewpoints of space saving, cost reduction, etc., it is desirable to remove hydrogen sulfide that may be generated in such battery packs using a simple configuration.

[0006] The present disclosure aims to provide a vehicle that can remove hydrogen sulfide generated within a battery pack using a simple configuration, without the need for an exhaust unit that requires power, such as an exhaust fan.

[0007] The present inventors have found that the above-mentioned problems can be solved by the following means. <Aspect 1> A vehicle in which a battery pack is disposed, wherein the battery pack includes a sulfide-based battery, a hydrogen sulfide removing agent, and an outer container that houses the sulfide-based battery and the hydrogen sulfide removing agent, the outer container having an opening that connects the interior of the outer container to the outside of the vehicle, the opening having a ventilation membrane, the hydrogen sulfide removing agent being disposed such that the interior of the outer container is connected to the outside of the vehicle via the hydrogen sulfide removing agent and the opening, and the opening being located at a position where negative pressure is generated when the vehicle is running. <Aspect 2> The vehicle according to Aspect 1, wherein a vehicle recess that is recessed inward is formed in a part of the vehicle, and the opening is located in the vehicle recess, thereby generating the negative pressure when the vehicle is running. <Aspect 3> The vehicle according to Aspect 2, wherein the vehicle recess is provided on the bottom surface of the vehicle. <Aspect 4> The vehicle according to Aspect 2, wherein the vehicle recess is provided on a side surface of the vehicle. <Aspect 5> The vehicle according to any one of Aspects 2 to 4, wherein the vehicle recess is provided rearward of the vehicle in the front-to-rear direction of the vehicle. <Aspect 6> The vehicle according to Aspect 1, wherein a battery pack recess that is recessed inward is formed in a part of the battery pack, and the opening is disposed in the battery pack recess, thereby generating the negative pressure when the vehicle is traveling. <Aspect 7> The vehicle according to Aspect 6, wherein the battery pack recess is provided on a bottom surface of the battery pack. <Aspect 8> The vehicle according to Aspect 6, wherein the battery pack recess is provided on a side surface of the battery pack. <Aspect 9> The vehicle according to any one of Aspects 6 to 8, wherein the battery pack recess is provided rearward of the vehicle in the front-to-rear direction of the vehicle. Aspect 10: The vehicle according to any one of Aspects 1 to 9, wherein the battery pack further includes a hydrogen sulfide removing agent container that houses the hydrogen sulfide removing agent, and the hydrogen sulfide removing agent container is connected to the opening. Aspect 11: The vehicle according to Aspect 10, wherein the hydrogen sulfide removing agent is disposed in a serpentine flow path within the hydrogen sulfide removing agent container.Aspect 12 The vehicle according to any one of Aspects 1 to 11, wherein the battery pack further includes a gas detection unit housed in the exterior container, the gas detection unit including a hydrogen sulfide adsorbent that adsorbs hydrogen sulfide and releases the hydrogen sulfide and / or a sulfur-containing gas derived from the hydrogen sulfide at a predetermined temperature or higher, a heating unit that heats the hydrogen sulfide adsorbent, and a gas detection unit that detects the hydrogen sulfide and / or the sulfur-containing gas released from the hydrogen sulfide adsorbent, and the gas detection unit and the hydrogen sulfide remover are arranged such that the interior of the exterior container communicates with the outside of the vehicle via the gas detection unit, the hydrogen sulfide remover, and the opening.

[0008] According to the present disclosure, a vehicle can be provided that can remove hydrogen sulfide generated within a battery pack using a simple configuration, without the need for an exhaust unit that requires power, such as an exhaust fan.

[0009] Fig. 1 is a schematic diagram illustrating a position where an opening is provided in a vehicle of the present disclosure. Fig. 2 is a schematic diagram illustrating a position where an opening is provided in a vehicle of the present disclosure. Fig. 3 is a schematic diagram illustrating a position where an opening is provided in a vehicle of the present disclosure. Fig. 4 is a schematic diagram showing an example of a battery pack in a vehicle of the present disclosure. Fig. 5 is a schematic diagram showing an example of a hydrogen sulfide removal unit in a battery pack. Fig. 6 is a schematic diagram showing an example of a battery pack in a vehicle of the present disclosure.

[0010] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the following embodiments, and various modifications can be made within the scope of the present disclosure. Furthermore, the dimensional relationships in the drawings do not reflect the actual dimensional relationships.

[0011] 1 to 4 , a battery pack 10 is disposed in a vehicle 1 of the present disclosure. The battery pack 10 includes a sulfide battery 110, a hydrogen sulfide removing agent 121, and an outer container 130 that houses the sulfide battery 110 and the hydrogen sulfide removing agent 121. The outer container 130 of the present disclosure has an opening 131 that connects the interior of the outer container 130 to the outside of the vehicle 1, and the opening is equipped with a ventilation membrane 131 a. The hydrogen sulfide removing agent 121 is disposed so that the interior of the outer container 130 communicates with the outside of the vehicle 1 via the hydrogen sulfide removing agent 121 and the opening 131. The opening 131 is disposed in a position where negative pressure is generated when the vehicle 1 is running.

[0012] The present inventors have come up with the idea of ​​utilizing the property that gas flows from a place of high pressure to a place of low pressure, and have made the present disclosure. That is, the present inventors have discovered that by arranging hydrogen sulfide removing agent 121 so that the inside of outer container 130 is in communication with the outside of vehicle 1 via hydrogen sulfide removing agent 121 and opening 131, and by providing opening 131 at a position where negative pressure is generated when vehicle 1 is running, gas containing hydrogen sulfide generated within battery pack 10, where the pressure is higher than that of the part outside the vehicle where negative pressure is generated, flows out via hydrogen sulfide removing agent 121 toward the part outside the vehicle where negative pressure is generated, i.e., a part where the pressure is lower than that within the battery pack, and thereby hydrogen sulfide generated within battery pack 10 can be effectively removed.

[0013] In the present disclosure, the "position where negative pressure occurs" refers to a portion outside the vehicle where the pressure is lower than the interior of the outer container. The position where negative pressure occurs may particularly refer to a portion where the pressure decreases as one moves outward from the vehicle. An example of a position where negative pressure occurs in a moving object such as a vehicle is a recessed portion shaped to follow the flow of gas generated as the object moves.

[0014] The elements that make up the vehicle of the present disclosure will be described below.

[0015] In the present disclosure, the vehicle is not particularly limited, and may be, for example, a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), an electric vehicle (BEV), a gasoline-powered vehicle, a diesel-powered vehicle, etc. In particular, the vehicle may be a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or an electric vehicle (BEV). The shape, size, etc. of the vehicle are not particularly limited as long as it can be equipped with a battery pack.

[0016] 1 to 3 , a battery pack 10 is disposed in a vehicle 1 according to the present disclosure. The battery pack 10 may be disposed in the bottom of the vehicle. In the present disclosure, the bottom of the vehicle is not particularly limited as long as it is a part that constitutes the bottom surface of the vehicle or a part that contacts the bottom surface of the vehicle, but may be, for example, a part located between the front and rear wheels of the vehicle.

[0017] As illustrated in FIG. 4 , the battery pack 10 includes a sulfide battery 110 , a hydrogen sulfide removing agent 121 , and an outer container 130 that houses the sulfide battery 110 and the hydrogen sulfide removing agent 121 .

[0018] (Sulfide-based battery) In the present disclosure, a "sulfide-based battery" refers to a battery containing a sulfide-based compound. Examples of sulfide-based compounds include, but are not limited to, sulfide-based solid electrolytes. Sulfide-based batteries may generate hydrogen sulfide due to a reaction between the sulfide-based compound contained therein and moisture.

[0019] The sulfide-based battery may be a liquid-based battery or a solid-state battery. The sulfide-based battery may contain a sulfide compound such as a sulfide solid electrolyte in at least one of the positive electrode active material layer, the electrolyte layer, and the negative electrode active material layer. In particular, the sulfide-based battery may be a sulfide solid battery containing a sulfide solid electrolyte in the solid electrolyte layer.

[0020] In the present disclosure, the term "solid-state battery" refers to a battery that uses at least a solid electrolyte as an electrolyte, and therefore a solid-state battery may use a combination of a solid electrolyte and a liquid electrolyte as an electrolyte. Alternatively, the solid-state battery of the present disclosure may be an all-solid-state battery, i.e., a battery that uses only a solid electrolyte as an electrolyte.

[0021] The sulfide-based battery may be a primary battery or a secondary battery, in particular a lithium-ion battery, a sodium-ion battery, etc.

[0022] When the sulfide-based battery of the present disclosure is a lithium-ion battery, examples of the sulfide solid electrolyte include, but are not limited to, an amorphous sulfide solid electrolyte, a crystalline sulfide solid electrolyte, an argyrodite-type solid electrolyte, and the like. ２ S-P ２ S ５ system (Li ７ P ３ S １１ , Li ３ P.S. ４ , Li ８ P ２ S ９ etc.), Li ２ S-SiS ２ , LiI-Li ２ S-SiS ２ , LiI-Li ２ S-P ２ S ５ , LiI-LiBr-Li ２ S-P ２ S ５ , Li ２ S-P ２ S ５ -GeS ２ (Li １３ GeP ３ S １６ , Li １０ GeP ２ S １２ etc.), LiI-Li ２ S-P ２ O ５ , LiI-Li ３ P.O. ４ -P ２ S ５ , Li７－ｘ P.S. ６－ｘ Cl ｘ etc.; or combinations thereof, but are not limited to these.

[0023] When the sulfide-based battery of the present disclosure is a sodium ion battery, examples of sulfide solid electrolytes include Na ３ P.S. ４ etc. Na ２ S-P ２ S ５ System, Na ３ SbS ４ , Na ２．８８ Sb ０．８８ W ０．１２ S ４ or combinations thereof, but are not limited to these.

[0024] The sulfide solid electrolyte may be glass or crystallized glass (glass ceramic).

[0025] In the present disclosure, the sulfide-based battery may be a battery in which an electrode laminate, in which an anode current collector layer, an anode active material layer, an electrolyte layer, a cathode active material layer, and a cathode current collector layer are stacked in this order, is housed in a laminate film that serves as a case for housing the battery, i.e., a so-called laminate battery (also called a pouch battery). When the sulfide-based battery is a laminate battery, opening the sealed portion of the laminate film may cause contact between the sulfur-based compound and moisture, which may result in the generation of hydrogen sulfide from the sulfide-based battery. Therefore, the sulfide-based battery 110 of the present disclosure may particularly be a laminate battery.

[0026] The case housing the sulfide battery does not have to be a laminate film, that is, the sulfide battery may be a battery other than a laminate battery, such as a square, cylindrical, or coin type.

[0027] As the materials for the negative electrode current collector layer, the negative electrode active material layer, the electrolyte layer, the positive electrode active material layer, and the positive electrode current collector layer, materials that are commonly used as materials for each layer in sulfide-based batteries can be appropriately adopted.

[0028] The shape, size, etc. of the electrode laminate are not particularly limited.

[0029] The shape, size, material, etc. of the case that houses the battery are not particularly limited.

[0030] The sulfide-based batteries housed in an outer container described below are electrically connected in series, in parallel, or in a combination of series and parallel. The number of sulfide-based batteries housed in the outer container may be one. The sulfide-based battery may be a battery module composed of two or more unit batteries. In this case, in each battery, the unit batteries are electrically connected in series, in parallel, or in a combination of series and parallel. The arrangement of the batteries in the outer container is not particularly limited and can be any arrangement. Therefore, multiple batteries may be stacked on top of each other or arranged spaced apart from each other.

[0031] The method for producing a sulfide-based battery is not particularly limited, and the battery can be produced by a conventionally known method.

[0032] (Hydrogen sulfide remover) The hydrogen sulfide remover 121 has a function of removing hydrogen sulfide. The hydrogen sulfide removed by the hydrogen sulfide remover may be hydrogen sulfide that may be generated by a reaction between a sulfide-based compound contained in a sulfide-based battery and moisture. The moisture that reacts with the sulfide-based compound may be, for example, moisture contained in the outside air that has infiltrated into the exterior container, which will be described later, or water that has infiltrated into the exterior container.

[0033] 4 , in the vehicle 1 of the present disclosure, the hydrogen sulfide removing agent 121 is arranged so that the interior of the outer container 130 is in communication with the outside of the vehicle 1 via the hydrogen sulfide removing agent 121 and the opening 131. In other words, the hydrogen sulfide removing agent 121 is arranged so that even if hydrogen sulfide is generated from the sulfide-based battery 110, gas containing hydrogen sulfide is discharged to the outside of the vehicle 1 via the hydrogen sulfide removing agent 121. With this configuration, hydrogen sulfide generated within the battery pack 10 can be effectively removed.

[0034] The hydrogen sulfide remover is not particularly limited, and may be, for example, one that removes hydrogen sulfide by chemically or physically adsorbing hydrogen sulfide.

[0035] When the hydrogen sulfide removing agent is a substance that chemically adsorbs hydrogen sulfide, examples of the hydrogen sulfide removing agent include alkaline substances, such as hydroxides of alkali metals or alkaline earth metals, and specific examples thereof include NaOH, KOH, Mg(OH), and the like. ２ , Ca(OH) ２ In this case, the hydrogen sulfide removing agent may be encapsulated in breathable microcapsules, or may be mixed with a resin and molded into a sheet.

[0036] When the hydrogen sulfide removing agent physically adsorbs hydrogen sulfide, the hydrogen sulfide removing agent may be, for example, activated carbon, silica gel, etc. Furthermore, these hydrogen sulfide removing agents in powder form may be solidified into pellets and used.

[0037] Examples of hydrogen sulfide removers that chemically adsorb hydrogen sulfide include metals such as aluminum, manganese, copper, cobalt, zinc, and nickel, and oxides of these metals. These hydrogen sulfide removers may be supported on a carrier. Examples of the carrier include zeolite.

[0038] The hydrogen sulfide removing agent may be filled so as to block the hydrogen sulfide flow path. That is, the hydrogen sulfide removing agent may be filled throughout the entire hydrogen sulfide flow path. With such a configuration, gas containing hydrogen sulfide is more likely to be discharged to the outside of the vehicle via the hydrogen sulfide removing agent. In this case, from the viewpoint of gas permeability, the hydrogen sulfide removing agent may be a powdered hydrogen sulfide removing agent solidified into pellets.

[0039] (External Container) As illustrated in FIG. 4 , the external container 130 houses the sulfide battery 110 and the hydrogen sulfide removing agent 121 .

[0040] The shape, size, etc. of the outer container are not particularly limited as long as it can accommodate the sulfide battery and the hydrogen sulfide remover.

[0041] The material for the outer container is not particularly limited, and any material commonly used for outer containers of battery packs can be used, such as metals, specifically aluminum, stainless steel, etc.

[0042] 1 to 4 , the outer container 130 of the present disclosure has an opening 131 that connects the inside of the outer container 130 to the outside of the vehicle 1. In other words, the inside of the outer container 130 and the outside of the vehicle 1 are connected by the opening 131.

[0043] The opening is provided at a position where negative pressure is generated when the vehicle is running. In the vehicle of the present disclosure, a vehicle recess that is recessed inward may be formed in a part of the vehicle, and an opening may be arranged in the vehicle recess, thereby generating negative pressure when the vehicle is running. If the battery pack forms part of the exterior surface of the vehicle, i.e., if part of the exterior surface of the vehicle is the outer surface of the battery pack, an opening may be provided in the vehicle recess.

[0044] Specifically, the location where negative pressure is generated may be a portion of the vehicle recessed inward to form a tire housing for the rear wheels, as exemplified in FIGS. 1 and 2 . That is, the location where negative pressure is generated may be a portion of the bottom of the vehicle facing the front of the rear wheels. In such a case, for example, as exemplified in FIG. 1 , the vehicle recess may be provided on the bottom surface of the vehicle. Because the specific gravity of hydrogen sulfide is greater than the specific gravity of air, such a configuration makes it easier for hydrogen sulfide to come into contact with the hydrogen sulfide removing agent even when the vehicle is stopped, i.e., without utilizing the negative pressure generated when the vehicle is running. As exemplified in FIG. 2 , the vehicle recess may be provided on the side of the vehicle. Multiple vehicle recesses may be provided, and in this case, the vehicle recesses may be provided on both opposing side surfaces of the vehicle, as exemplified in FIG. 2 .

[0045] As illustrated in Figures 1 and 2, the vehicle recess may be provided at the rear of the vehicle in the longitudinal direction of the vehicle. Note that "rear of the vehicle" means a portion rearward of the center of the vehicle's longitudinal length, and may particularly be a portion facing the front of the rear wheel. Note that Figure 1 is a schematic diagram illustrating the positions at which openings are provided when the vehicle of the present disclosure is viewed from the side. Figure 2 is a schematic diagram illustrating the positions at which openings are provided when the vehicle of the present disclosure is viewed from the bottom.

[0046] When the battery pack forms part of the exterior surface of the vehicle, i.e., when part of the exterior surface of the vehicle is the exterior surface of the battery pack, a battery pack recess that is recessed inward may be formed in part of the battery pack, and an opening may be disposed in the battery pack recess, thereby generating negative pressure when the vehicle is running, as illustrated in Figure 3. The method for forming the recess in the battery pack is not particularly limited. For example, when the outer container of the battery pack is formed of a metal material such as aluminum, the battery pack recess can be formed by a commonly used metal processing method such as bending. With this configuration, it is possible to easily provide a position where negative pressure is generated when the vehicle is running.

[0047] As illustrated in Fig. 3, the battery pack recess may be provided on the bottom surface of the battery pack. As described above, this configuration makes it easier for hydrogen sulfide to come into contact with the hydrogen sulfide remover even when the vehicle is stopped. The battery pack recess may be provided on the side surface of the battery pack. The battery pack recess may be provided at the rear of the vehicle in the fore-and-aft direction of the vehicle. Fig. 3 is a schematic diagram illustrating the positions where openings are provided when the battery pack is viewed from the side in the vehicle of the present disclosure.

[0048] In Figures 1 to 3, the solid arrows illustrate the flow of outside air while the vehicle is running, and the open arrows illustrate the flow of gas containing hydrogen sulfide generated inside the outer container toward a portion outside the vehicle where negative pressure is generated.

[0049] The position where negative pressure occurs is not limited to the above-mentioned positions. For example, the position where negative pressure occurs may be a recessed portion that constitutes the outer surface of the vehicle other than the above-mentioned positions. Furthermore, for example, a position where negative pressure occurs while the vehicle is running can also be set by mounting or attaching a member that changes the direction or speed of gas flow on the vehicle.

[0050] The opening 131 is provided with a breathable membrane 131a. In the present disclosure, the term "breathable membrane" refers to a membrane that is permeable to gas but not to liquid water. The provision of the breathable membrane 21a in the opening 131 makes it easier to prevent the intrusion of moisture (liquid water) from outside the vehicle.

[0051] The material of the breathable membrane is not particularly limited as long as it can function as a breathable membrane, and examples of the material of the breathable membrane include expanded polytetrafluoroethylene and nylon mesh.

[0052] The member for preventing the intrusion of moisture that can be provided in the opening is not limited to the breathable film, and the opening may be provided with a member other than the member for preventing the intrusion of moisture.

[0053] The shape of the opening is not particularly limited and may be, for example, circular, elliptical, rectangular, etc. When the opening has a circular, elliptical, rectangular, etc. shape, it is easy to attach a member such as a breathable membrane.

[0054] The number of openings is not particularly limited as long as they are provided at positions where negative pressure is generated when the vehicle is running.

[0055] An opening or the like communicating the inside of the outer container with the outside of the vehicle may or may not be provided in a position other than where negative pressure is generated when the vehicle is running. If an opening or the like communicating the inside of the outer container with the outside of the vehicle is not provided in a position other than where negative pressure is generated when the vehicle is running, the negative pressure is released when the vehicle is stopped, which makes it easier for outside air to enter the battery pack, while gas containing hydrogen sulfide can be effectively discharged to the outside of the vehicle via the hydrogen sulfide remover.

[0056] (Hydrogen sulfide removing agent container) As illustrated in Figure 4, the battery pack 10 may further include a hydrogen sulfide removing agent container 122 that contains a hydrogen sulfide removing agent 121, and the hydrogen sulfide removing agent container 122 may be connected to the opening 131. By connecting the hydrogen sulfide removing agent container 122 to the opening 131, gas containing hydrogen sulfide generated from the sulfide-based battery 110 is easily discharged to the outside of the vehicle 1 via the hydrogen sulfide removing agent 121. In particular, the connection portion between the hydrogen sulfide removing agent container 122 and the opening 131 may be sealed. Note that in the present disclosure, a unit including the hydrogen sulfide removing agent 121 and the hydrogen sulfide removing agent container 122 may be referred to as a hydrogen sulfide removal unit.

[0057] FIG. 5 is a schematic diagram showing an example of a hydrogen sulfide removal unit as viewed from above. As illustrated in FIG. 5 , the hydrogen sulfide removing agent 121 may be disposed in a serpentine flow path within the hydrogen sulfide removing agent container 122. This configuration allows the flow path of the hydrogen sulfide-containing gas generated from the sulfide-based battery 110 to be lengthened, thereby enabling effective removal of hydrogen sulfide. The hydrogen sulfide removing agent container may have multiple baffles 122a, and the serpentine flow path may be formed by the multiple baffles. Alternatively, the serpentine flow path may be formed by a serpentine-shaped pipe disposed in the hydrogen sulfide removing agent container. The arrows in FIG. 5 illustrate the flow of the hydrogen sulfide-containing gas.

[0058] The length of the serpentine flow path is not particularly limited and can be appropriately designed taking into consideration the amount of hydrogen sulfide that may be generated, etc. For example, when the serpentine flow path is formed by a plurality of baffles, the length of the serpentine flow path can be adjusted by the number of baffles, etc. Furthermore, when the serpentine flow path is formed by a serpentine-shaped pipe, the length of the serpentine flow path can be appropriately adjusted by the size of the opening of the pipe, the number of bends in the pipe, etc.

[0059] The shape of the hydrogen sulfide removing agent container is not particularly limited and may be, for example, cylindrical or rectangular tubular. In particular, the hydrogen sulfide removing agent container may be formed by arranging articles of these shapes with the axial direction of the cylindrical body oriented horizontally. When the hydrogen sulfide removing agent container is cylindrical, the cross-sectional shape is not particularly limited and may be a perfect circle or an ellipse. When the hydrogen sulfide removing agent container is rectangular tubular, the number of corners is not particularly limited and the corners may be rounded. For example, the shape of the hydrogen sulfide removing agent container may be a square tubular or rounded square tubular.

[0060] The size of the hydrogen sulfide remover container is not particularly limited, and can be designed appropriately taking into consideration the amount of hydrogen sulfide that may be generated and the size of components (baffles, serpentine pipes, etc.) that may be placed inside the hydrogen sulfide remover container to form a serpentine flow path.

[0061] The materials for the hydrogen sulfide removing agent container and the members for forming the serpentine flow path are not particularly limited as long as they are resistant to corrosion by hydrogen sulfide, and examples of such materials include metals such as aluminum and stainless steel.

[0062] (Communicating tube) When the battery pack does not form part of the exterior surface of the vehicle, the battery pack may have a communicating tube connected to the opening of the outer container and connecting the inside of the outer container to the outside of the vehicle, thereby connecting the opening to a vehicle recess.

[0063] The shape, length, etc. of the communication pipe can be designed as appropriate, taking into consideration the distance between the opening and the position where negative pressure occurs when the vehicle is running, etc.

[0064] The material for the inner wall of the communicating pipe is not particularly limited as long as it can withstand corrosion by hydrogen sulfide, and examples of such materials include metals such as aluminum and stainless steel.

[0065] 6, the battery pack in a vehicle according to the present disclosure may further include a gas detection unit 10 housed in an outer container. The gas detection unit may include a hydrogen sulfide adsorbent 141 that releases hydrogen sulfide and / or a sulfur-containing gas derived from hydrogen sulfide at or above a predetermined temperature, a heating unit 142 that heats the hydrogen sulfide adsorbent, and a gas detection unit 143 that detects the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent.

[0066] That is, in this case, a battery pack is disposed in the vehicle of the present disclosure, and the battery pack includes a sulfide-based battery, a gas detection unit, a hydrogen sulfide remover, and an outer container housing the sulfide-based battery, the gas detection unit, and the hydrogen sulfide remover. The gas detection unit includes a hydrogen sulfide adsorbent that adsorbs hydrogen sulfide and releases hydrogen sulfide and / or a sulfur-containing gas derived from the hydrogen sulfide at a predetermined temperature or higher, a heating unit that heats the hydrogen sulfide adsorbent, and a gas detection unit that detects the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent. The outer container of the present disclosure has an opening that connects the interior of the outer container to the outside of the vehicle. The gas detection unit and the hydrogen sulfide remover are disposed so that the interior of the outer container is connected to the outside of the vehicle via the gas detection unit, the hydrogen sulfide remover, and the opening. The opening is located at a position where negative pressure is generated when the vehicle is running.

[0067] (Hydrogen Sulfide Adsorbent) As illustrated in Figure 6, the gas detection unit 140 may have a hydrogen sulfide adsorbent 141 that releases hydrogen sulfide and / or sulfur-containing gas derived from hydrogen sulfide at or above a predetermined temperature. An example of such a hydrogen sulfide adsorbent is activated carbon. When the hydrogen sulfide adsorbent is activated carbon, it can effectively release hydrogen sulfide and / or sulfur-containing gas at temperatures of 100°C or higher and 400°C or lower. Furthermore, activated carbon decomposes only slightly at temperatures of 100°C or higher and 400°C or lower, and therefore can be used repeatedly as a hydrogen sulfide adsorbent, thereby reducing material costs, replacement costs, and the like.

[0068] The hydrogen sulfide adsorbent and the hydrogen sulfide remover may be the same or different.

[0069] 6, gas detection unit 140 may have heating section 142 that heats hydrogen sulfide adsorbent 141. The heating section may heat the hydrogen sulfide adsorbent to a temperature of 100° C. or higher and 400° C. or lower. The heating section is not particularly limited as long as it is capable of heating the hydrogen sulfide adsorbent, and may be, for example, a heater.

[0070] (Gas Detection Section) As illustrated in Figure 6, the gas detection unit 140 may have a gas detection section 143 that detects hydrogen sulfide and / or sulfur-containing gases released from the hydrogen sulfide adsorbent 141. Heating the hydrogen sulfide adsorbent may generate sulfur-containing gases other than hydrogen sulfide, such as sulfur oxides, and therefore the gas detection section may be capable of detecting sulfur-containing gases including hydrogen sulfide. The gas detection section is not particularly limited as long as it can detect hydrogen sulfide and / or sulfur-containing gases. The gas detection section may be, for example, a gas sensor.

[0071] With this configuration, when it is desired to detect the generation of hydrogen sulfide, the gas detection unit comes into contact with concentrated hydrogen sulfide, thereby enabling highly accurate detection of hydrogen sulfide. Furthermore, the hydrogen sulfide released from the hydrogen sulfide adsorbent is removed by the hydrogen sulfide remover, preventing hydrogen sulfide from being discharged outside the vehicle.

[0072] REFERENCE SIGNS LIST 1 vehicle 10 battery pack 110 sulfide battery 121 hydrogen sulfide remover 122 hydrogen sulfide remover container 122a baffle plate 130 outer container 131 opening 131a ventilation membrane 140 gas detection unit 141 hydrogen sulfide adsorbent 142 heating section 143 gas detection section

Claims

1. A vehicle in which a battery pack is disposed, the battery pack having a sulfide-based battery, a hydrogen sulfide removing agent, and an outer container that houses the sulfide-based battery and the hydrogen sulfide removing agent, the outer container having an opening that connects the inside of the outer container to the outside of the vehicle, the opening having an air-permeable membrane, the hydrogen sulfide removing agent being disposed so that the inside of the outer container is connected to the outside of the vehicle via the hydrogen sulfide removing agent and the opening, and the opening being provided at a position where negative pressure is generated when the vehicle is running.

2. The vehicle according to claim 1, wherein a vehicle recess that is recessed inward is formed in a portion of the vehicle, and the opening is disposed in the vehicle recess, thereby generating the negative pressure when the vehicle is running.

3. The vehicle according to claim 2, wherein the vehicle recess is provided on the bottom surface of the vehicle.

4. The vehicle according to claim 2, wherein the vehicle recess is provided on a side surface of the vehicle.

5. A vehicle according to any one of claims 2 to 4, wherein the vehicle recess is provided at the rear of the vehicle in the fore-and-aft direction of the vehicle.

6. The vehicle of claim 1, wherein a battery pack recess that is recessed inward is formed in a portion of the battery pack, and the opening is disposed in the battery pack recess, thereby generating the negative pressure when the vehicle is running.

7. The vehicle according to claim 6, wherein the battery pack recess is provided on the bottom surface of the battery pack.

8. The vehicle according to claim 6, wherein the battery pack recess is provided on a side surface of the battery pack.

9. The vehicle according to any one of claims 6 to 8, wherein the battery pack recess is provided at the rear of the vehicle in the longitudinal direction of the vehicle.

10. A vehicle according to any one of claims 1 to 9, wherein the battery pack further comprises a hydrogen sulfide removing agent container that contains the hydrogen sulfide removing agent, and the hydrogen sulfide removing agent container is connected to the opening.

11. The vehicle according to claim 10, wherein the hydrogen sulfide removing agent is disposed in a serpentine flow path within the hydrogen sulfide removing agent container.

12. A vehicle according to any one of claims 1 to 11, wherein the battery pack further comprises a gas detection unit housed within the exterior container, the gas detection unit comprising a hydrogen sulfide adsorbent that adsorbs hydrogen sulfide and releases the hydrogen sulfide and / or a sulfur-containing gas derived from the hydrogen sulfide at a predetermined temperature or higher, a heating section that heats the hydrogen sulfide adsorbent, and a gas detection section that detects the hydrogen sulfide and / or the sulfur-containing gas released from the hydrogen sulfide adsorbent, and the gas detection unit and the hydrogen sulfide remover are arranged so that the interior of the exterior container communicates with the outside of the vehicle via the gas detection unit, the hydrogen sulfide remover, and the opening.

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