Gas detection unit, battery pack, gas detection system, battery system and gas detection method

Abstract

The disclosure provides a gas detection unit capable of detecting hydrogen sulfide-containing gas with high precision, a battery pack including the detection unit, a gas detection system, a battery system including the gas detection system, and a gas detection method. The gas detection unit 10 of the disclosure includes a hydrogen sulfide adsorbent 11, a heating section 12 that heats the hydrogen sulfide adsorbent, and a gas detection section 13 that detects the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent. The battery pack 1 of the disclosure includes a sulfide-based battery 20, a gas detection unit 10 of the disclosure, and an outer container 30 that houses the sulfide-based battery 20 and the gas detection unit 10.

Description

AREA

[0001] The present disclosure relates to a gas sensing unit, a battery pack, a gas sensing system, a battery system, and a gas sensing method. BACKGROUND

[0002] In a sulfide-based battery containing a sulfide-based compound, the sulfide-based compound can react with water to form hydrogen sulfide. Techniques have been developed to detect such generated hydrogen sulfide.

[0003] For example, PTL 1 discloses a battery system equipped with a battery pack, a gas sensor that detects the concentration of hydrogen sulfide-containing gas in the battery pack, a temperature sensor that detects the temperature inside the battery pack, and an abnormality diagnosis device that diagnoses that an abnormally high concentration of hydrogen sulfide has been generated in the battery pack when the concentration detected by the gas sensor is higher than a threshold value, wherein the abnormality diagnosis device increases the threshold concentration as the temperature inside the battery pack increases.

[0004] In other words, PTL 1 discloses that increasing the limit value of hydrogen sulfide concentration is used to diagnose that an abnormally high concentration of hydrogen sulfide was generated in response to an increasing temperature in the battery pack. [CITATION LIST][PATENT LITERATURE]

[0005] [PTL 1] Unexamined Japanese Patent Publication No. 2022-012308 SUMMARY[TECHNICAL PROBLEM]

[0006] Increasing the hydrogen sulfide concentration limit may result in hydrogen sulfide not being detected, even if hydrogen sulfide is actually being generated. It is preferable to be able to detect hydrogen sulfide-containing gas with high precision.

[0007] It is an object of the disclosure to provide a gas detection unit capable of detecting hydrogen sulfide-containing gas with high precision, and a battery pack including the detection unit. Another object of the disclosure is to provide a gas detection system capable of detecting hydrogen sulfide-containing gas with high precision, and a battery system including the gas detection system. Another object of the disclosure is to provide a gas detection method capable of detecting hydrogen sulfide-containing gas with high precision. [SOLVING THE PROBLEM]

[0008] The inventors have found that the above object can be achieved by the following means. <Gesichtspunkt 1>

[0009] A gas detection unit comprising: a hydrogen sulfide adsorbent that adsorbs hydrogen sulfide and releases hydrogen sulfide and / or sulfur-containing gas derived from the hydrogen sulfide at or above a predetermined temperature, a heating area that heats the hydrogen sulfide adsorbent, and a gas detection section that detects the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent. <Gesichtspunkt 2>

[0010] The gas detection unit according to aspect 1, wherein the gas detection region is arranged above the hydrogen sulfide adsorbent. <Gesichtspunkt 3>

[0011] The gas detection unit according to aspect 1 or 2, wherein the heating section heats the hydrogen sulfide adsorbent to a temperature of 100°C or higher and 400°C or lower. <Gesichtspunkt 4>

[0012] A battery pack comprising a sulfide-based battery, a gas sensing unit according to any one of aspects 1 to 3, and an outer container accommodating the sulfide-based battery and the gas sensing unit, where the hydrogen sulfide is generated from the sulfide-based battery. <Gesichtspunkt 5>

[0013] The battery pack according to aspect 4, wherein the hydrogen sulfide adsorbent is disposed below the sulfide-based battery. <Gesichtspunkt 6>

[0014] A gas detection system comprising: a gas detection unit according to one of the aspects 1 to 3 and a control unit that operates the heated heating area at a predetermined interval. <Gesichtspunkt 7>

[0015] The gas detection system according to aspect 6, wherein: the gas detection system further comprises a notification unit, the control unit activates the notification unit when the concentration of hydrogen sulphide and / or sulphur-containing gas detected by the gas detection area exceeds a limit value. <Gesichtspunkt 8>

[0016] A battery system comprising a sulfide-based battery and a gas detection system according to aspect 6 or 7, where the hydrogen sulfide is generated from the sulfide-based battery. <Gesichtspunkt 9>

[0017] A gas detection method comprising the following steps: Adsorbing hydrogen sulfide with a hydrogen sulfide adsorbent, Heating the hydrogen sulfide adsorbent with a heating region to cause the release of the hydrogen sulfide and / or the sulfur-containing gas derived from the hydrogen sulfide from the hydrogen sulfide adsorbent, and Detecting the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent with a gas detection region. <Gesichtspunkt 10>

[0018] The gas detection method according to aspect 9, wherein a hydrogen sulfide adsorption device is disposed in an outer container of a battery pack together with a sulfide-based battery, causing hydrogen sulfide generated by the sulfide-based battery to be adsorbed by the hydrogen sulfide adsorption device. [ADVANTAGEOUS EFFECTS OF THE INVENTION]

[0019] According to the disclosure, it is possible to provide a gas detection unit capable of detecting hydrogen sulfide-containing gas with high precision, and a battery pack including the detection unit. According to the disclosure, it is also possible to provide a gas detection system capable of detecting hydrogen sulfide-containing gas with high precision, and a battery system including the gas detection system. According to the gas detection method of the disclosure, it is possible to detect hydrogen sulfide-containing gas with high precision. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram of an example of the gas detection unit of the disclosure. Fig. 2 is a schematic representation of a battery pack according to the disclosure. Fig. 3 is a schematic representation of the overall structure of a gas detection system according to the disclosure. Fig. 4 is a flowchart showing processing performed by a gas sensing system and battery system of the disclosure. Fig. 5 is a schematic representation of the overall structure of a battery system according to the disclosure. DESCRIPTION OF THE EMBODIMENTS

[0020] An embodiment of the disclosure will now be described in detail with reference to the accompanying drawings. However, the disclosure is not limited to the embodiment described below, and various modifications may be made without departing from the gist of the disclosure. The dimensional relationships in the drawings do not correspond to the actual dimensional relationships. <gaserfassungseinheit>

[0021] As in Fig. 1, the gas detection unit 10 of the disclosure includes a hydrogen sulfide adsorbent 11 that adsorbs hydrogen sulfide and releases hydrogen sulfide and / or sulfur-containing gas derived from the hydrogen sulfide at or above a predetermined temperature, a heating portion 12 that heats the hydrogen sulfide adsorbent, and a gas detection portion 13 that detects the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent.

[0022] When attempting to detect hydrogen sulfide, it may be impossible to accurately detect hydrogen sulfide. One reason for this, according to the inventors, is the low gas selectivity when detecting hydrogen sulfide by the gas sensing portion, which is often a gas sensor. Therefore, in the presence of gases other than hydrogen sulfide, the generation of hydrogen sulfide may be falsely detected even if no hydrogen sulfide is actually being generated. To prevent such misdetection, it is necessary to set a higher limit for the concentration at which hydrogen sulfide is detected by the gas sensing portion. However, if this happens, it may not be possible to detect hydrogen sulfide even if hydrogen sulfide is actually being generated.

[0023] The present inventors have discovered that by heating a hydrogen sulfide adsorbent to release hydrogen sulfide adsorbed by the hydrogen sulfide adsorbent, and detecting the released hydrogen sulfide with a gas detection section, it is possible to cause highly concentrated hydrogen sulfide to contact the gas detection section, thus enabling the detection of hydrogen sulfide-containing gas with high precision. Since sulfur-containing gases other than hydrogen sulfide, such as sulfur oxides, can also be generated when hydrogen sulfide is heated, the gas detection section can also detect such sulfur-containing gases. <schwefelwasserstoffadsorptionsmittel>

[0024] As in Fig. As shown in Figure 1, the gas detection unit 10 of the disclosure may include a hydrogen sulfide adsorbent 11. The hydrogen sulfide adsorbent 11 adsorbs hydrogen sulfide and releases hydrogen sulfide and / or sulfur-containing gas derived from hydrogen sulfide at or above a predetermined temperature.

[0025] Examples of hydrogen sulfide adsorbents include activated carbon, alumina, and zeolite as matrix materials. These hydrogen sulfide adsorbents can also be supported on a carrier. Examples of supports include Ag, KMnO4, NaMnO4, K2CO3, NaHCO3, and CuO. Such hydrogen sulfide adsorbents in powder form can also be used after solidification into pellets.

[0026] The specified temperature depends on the type of hydrogen sulfide adsorbent. For example, if the hydrogen sulfide adsorbent is activated carbon, the specified temperature can be 100°C.

[0027] The sulfur-containing gas derived from hydrogen sulfide is not particularly restricted as long as it is a gas released from the hydrogen sulfide adsorbent and contains a sulfur element, and examples are sulfur oxides such as sulfur dioxide.

[0028] The hydrogen sulfide adsorbent can be contained in a container with an opening. <heizbereich>

[0029] As in Fig. As shown in Figure 1, the gas detection unit 10 of the disclosure includes a heating section 12. The heating section 12 heats the hydrogen sulfide adsorbent 11. The hydrogen sulfide adsorbent 11, heated by the heating section 12 to or above the predetermined temperature, releases hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide.

[0030] The heating range is not particularly limited as long as it can heat the hydrogen sulfide adsorbent, and can be, for example, a heater.

[0031] The heating section 12 can heat the hydrogen sulfide adsorbent 11 to a temperature of 100°C or higher and 400°C or lower.

[0032] Especially when the hydrogen sulfide adsorbent is activated carbon, it is possible to effectively release hydrogen sulfide and / or sulfur-containing gas at temperatures of 100°C or higher and 400°C or lower. Activated carbon also decomposes only slightly in the temperature range of 100°C or higher and 400°C or lower, and can therefore be used repeatedly as a hydrogen sulfide adsorbent, reducing material costs and replacement costs.

[0033] The location of the heating area is not particularly restricted as long as it is a location that allows heating of the hydrogen sulfide adsorbent. Fig. 1, the heating region is arranged at both ends of the hydrogen sulfide adsorbent for illustrative purposes, but the location of the heating region is not limited to the figure. <gaserfassungsbereich>

[0034] As in Fig. As shown in Figure 1, the gas detection unit 10 of the disclosure includes a gas detection region 13. The gas detection region 13 detects hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent 11.

[0035] The gas detection range is not particularly limited as long as it can detect hydrogen sulfide and / or sulfur-containing gas. The gas detection range can be, for example, a gas sensor.

[0036] The gas detection region 13 can be arranged in a predetermined flow channel for the released hydrogen sulfide and / or sulfur-containing gas. For example, the gas detection region 13 can be arranged above the hydrogen sulfide adsorbent 11. Since heated gas tends to move upward, this design facilitates contact between the gas detection region 13 and the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent 11 by heating, thus assisting in the detection of hydrogen sulfide and / or sulfur-containing gas by the gas detection region 13. This can reduce production costs because no venting path is required to direct the released hydrogen sulfide and / or sulfur-containing gas to the gas detection region 13.For example, if the hydrogen sulfide adsorbent is contained in a container having an opening, the gas sensing region may be located above and near the opening. < <batteriepaket>>

[0037] As in Fig. As shown in Figure 2, the battery pack 1 of the disclosure includes a sulfide-based battery 20, a gas detection unit 10 of the disclosure, and an outer container 30 that houses the sulfide-based battery 20 and the gas detection unit 10. In the battery pack 1 of the disclosure, the hydrogen sulfide adsorbed by the hydrogen sulfide adsorbent 11 is generated from the sulfide-based battery 20.In other words, the battery pack 1 of the disclosure includes a sulfide-based battery 20, a gas detection unit 10, and an outer container 30 in which the sulfide-based battery 20 and the gas detection unit 10 are housed, while the gas detection unit 10 includes a hydrogen sulfide adsorbent 11 that adsorbs the hydrogen sulfide generated by the sulfide-based battery 20 and releases the hydrogen sulfide and / or the sulfur-containing gas released from the hydrogen sulfide at or above the predetermined temperature, a heating section 12 that heats the hydrogen sulfide adsorbent 11, and a gas detection section 13 that detects the hydrogen sulfide and / or the sulfur-containing gas released from the hydrogen sulfide adsorbent 11.Since the battery pack 1 of the disclosure includes the gas detection unit 10 of the disclosure, it can detect with high precision hydrogen sulfide-containing gas that may sometimes be generated from the sulfide-based battery 20. <Batterie auf Sulfidbasis>

[0038] As in Fig. As shown in Figure 2, the battery pack 1 of the disclosure includes a sulfide-based battery 20. The term "sulfide-based battery" as used herein means a battery containing a sulfide-based compound. The sulfide-based compound is not particularly limited and may be, for example, a sulfide-based solid electrolyte. The sulfide-based battery 20 sometimes generates hydrogen sulfide due to the reaction between the sulfide-based compound and moisture. Examples of moisture that reacts with sulfide-based compounds include moisture in the outside air that has penetrated into the outer container 30 and water that has penetrated into the outer container 30.

[0039] The sulfide-based battery can be a liquid battery or a solid-state battery. The sulfide-based battery can also contain a sulfide-based compound, such as a sulfide solid electrolyte, in one or more layers of the positive electrode active material, the electrolyte layer, and the negative electrode active material layer. The sulfide-based battery is preferably a sulfide solid-state battery, which has a sulfide solid electrolyte in the solid electrolyte layer.

[0040] The term "solid-state battery" used herein refers to a battery that uses at least one solid electrolyte as the electrolyte, and the solid-state battery may use a combination of a solid electrolyte and a liquid electrolyte as the electrolyte. The solid-state battery of the disclosure may also be a pure solid-state battery, that is, a battery that uses only a solid electrolyte as the electrolyte.

[0041] The sulfide-based battery can be a primary battery or a secondary battery such as a lithium-ion battery or a sodium-ion battery.

[0042] If the sulfide-based battery is a lithium-ion battery, examples of sulfide solid electrolytes include amorphous sulfide solid electrolytes, crystalline sulfide solid electrolytes, and argyrodite solid electrolytes. Specific examples of sulfide solid electrolytes include Li2S-P2S5 (Li7P3S 11 , Li3PS4, Li8P2S9), Li2S-SiS2, LiI-Li2S-SiS2, LiI-Li2S-P2S5, LiI-LiBr-Li2S-P2S5, Li2S-P2S5-GeS2 (Li 13 GeP3S 16 , Li 10 GeP2S 12 ), LiI-Li2S-P2O5, LiI-Li3PO4-P2S5 and Li 7-x PS 6-x Cl x , as well as combinations thereof.

[0043] If the sulfide-based battery is a sodium-ion battery, examples of solid sulfide electrolytes are Na2S-P2S5 such as Na3PS4 or Na3SbS4 and Na 2,88 Sb 0,88 W 0,12 S4 or combinations thereof, but are not limited to them.

[0044] A sulfide solid electrolyte can be made of glass or crystallized glass (glass ceramic).

[0045] According to the disclosure, the sulfide-based battery may be a "layered battery" (also known as a "pocket battery"), that is, a battery having an electrode stack including a negative electrode collector layer, a negative electrode active material layer, an electrolyte layer, a positive electrode active material layer, and a positive electrode collector layer stacked in this order and housed in a laminate film as a battery case. When the sulfide-based battery is a laminated battery, the sealed portions of the laminate film tend to open, allowing contact between the sulfur-based compound and moisture and tending to generate hydrogen sulfide in the sulfide-based battery. The sulfide-based battery of the disclosure is therefore particularly useful as a laminated battery.

[0046] The housing in which the sulfide-based battery is housed does not have to be made of a laminate film. This means that the sulfide-based battery can be a battery type other than a laminated battery, such as a linear, cylindrical, or coin battery.

[0047] The materials for the negative electrode collector layer, the negative electrode active material layer, the electrolyte layer, the positive electrode active material layer, and the positive electrode collector layer can be used in a suitable and conventional manner for materials used for such layers in a sulfide-based battery.

[0048] The shape and size of the electrode stack are not particularly restricted.

[0049] There are also no particular restrictions on the shape, size and material of the housing in which the battery is housed.

[0050] The sulfide-based battery housed in an outer container as described below is electrically connected in series or parallel, or in a combination of series and parallel. The number of sulfide-based batteries housed in an outer container may be one. The sulfide-based battery may also be a battery module composed of two or more unit cells. In this case, the unit cells in each battery may be electrically connected in series or parallel, or in a combination of series and parallel. The arrangement of the battery(ies) in the outer container is not particularly limited and can be arbitrary. Multiple batteries may be stacked together or arranged separately.

[0051] The method for producing the sulfide-based battery is not particularly limited and can be produced by a conventional, well-known method. <gaserfassungseinheit>

[0052] As in Fig. As shown in Figure 2, the battery pack 1 of the disclosure includes a gas sensing unit 10 of the disclosure. The gas sensing unit 10 of the disclosure will be understood by reference to the description herein relating to the gas sensing unit of the disclosure.

[0053] The hydrogen sulfide adsorbent 11 in the gas detection unit 10 may be arranged below the sulfide-based battery 20. Since the specific gravity of hydrogen sulfide is greater than the specific gravity of air, such a structure helps the hydrogen sulfide adsorbent 11 adsorb hydrogen sulfide generated by the sulfide-based battery 20. Specifically, the hydrogen sulfide adsorbent 11 may be arranged at the bottom of the battery pack 1. <Außenbehälter>

[0054] As in Fig. As shown in Figure 2, the battery pack 1 of the disclosure includes an outer container 30. The outer container 30 houses the sulfide-based battery 20 and the gas sensing unit 10.

[0055] The shape and size of the outer container are not particularly restricted as long as the container can accommodate the sulfide-based battery and the hydrogen sulfide adsorbent.

[0056] The material of the outer container is also not particularly restricted and can be any commonly used for battery pack outer containers. These materials include metals, particularly aluminum and stainless steel. < <gaserfassungssystem>>

[0057] As in Fig. 3, the gas detection system 100 of the disclosure includes a gas detection unit 10 of the disclosure and a control unit 14 that operates the heating section at a predetermined interval. Specifically, the gas detection system 100 of the disclosure includes a hydrogen sulfide adsorbent 11 that heats hydrogen sulfide and releases hydrogen sulfide and / or sulfur-containing gas derived from hydrogen sulfide at or above a predetermined temperature, a heating section 12 that heats the hydrogen sulfide adsorbent, a gas detection unit 13 that detects hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent, and a control unit 14 that operates the heating section at the predetermined interval.Such a design makes it possible to detect hydrogen sulfide-containing gas with high precision and reduce the labor and cost of manual operation of the heating section. It is also possible to prevent excessive adsorption of hydrogen sulfide on the hydrogen sulfide adsorbent. <gaserfassungseinheit>

[0058] The gas detection unit 10 of the gas detection system 100 of the disclosure will be understood by reference to the description of the gas detection unit of the disclosure contained herein. <steuerungseinheit>

[0059] As in Fig. As shown in Figure 3, the gas detection system 100 of the disclosure includes a control unit 14. The control unit 14 actuates the heating section 12 at a predetermined interval. The predetermined interval can be appropriately configured, taking into account the hydrogen sulfide adsorption capacity and the service life of the hydrogen sulfide adsorbent 11.

[0060] The control unit 14 may be a processor such as a CPU (Central Processing Unit). Therefore, the gas detection system of the disclosure may include a CPU and, in addition, a memory, input / output ports for inputting and outputting signals, and a sensor. The CPU may perform various control operations based on the signals received from a sensor and a program stored in the memory. The memory may be a volatile semiconductor memory (e.g., RAM), a non-volatile semiconductor memory (e.g., ROM), a hard disk drive (HDD), a solid-state drive (SSD), or an optical recording medium.

[0061] For example, by pre-storing a program in memory related to the predetermined interval for operating the heating section, the CPU can control the operation of the heating section at the predetermined interval based on the program. More specifically, the gas detection system of the disclosure may also include a timer that allows the CPU to control the operation of the heating section based on a signal input from the timer and a program associated with the predetermined interval pre-stored in memory.

[0062] In another embodiment, the control unit may control the actuation of the heating section when a specific parameter, such as the pressure in the outer container, has reached or exceeded a threshold value. The method for measuring the given parameter in the outer container is not particularly limited and may be a method for measuring by a sensing unit such as a sensor. In particular, when the control unit is to cause the actuation of the heating section based on the pressure in the outer container, the battery pack of the disclosure may further include a pressure sensing unit, such as a pressure sensor. In this case, the pressure inside the outer container can be continuously monitored using the pressure sensing unit.The pressure limit inside the outer container is not particularly restricted, as long as it is a value that allows for the assessment of the pressure increase during hydrogen sulfide generation. When the detected pressure inside the outer container is at or above the limit, the pressure detection unit generates a signal that is input to the CPU, which acts as the control unit. The CPU then controls the operation of the heating section based on the signal. <benachrichtigungseinheit>

[0063] The gas detection system 100 of the present disclosure further includes a notification unit 15. The control unit 14 can actuate the notification unit 15 when the concentration of hydrogen sulfide and / or sulfur-containing gas detected by the gas detection section 13 exceeds the threshold value. That is, the notification unit 15 can be activated by the control unit 14 to notify when the concentration of hydrogen sulfide and / or sulfur-containing gas detected by the gas detection section 13 exceeds the threshold value. For example, when the detected hydrogen sulfide concentration exceeds the threshold value, the gas detection section 13 can generate a signal that is input to the CPU functioning as the control unit 14, allowing the CPU to actuate the notification unit 15 based on the signal.A program that interrupts the control by the control unit 14 for actuating the heating section 12 when the signal has been input to the CPU may also be pre-stored in the memory, wherein the control unit 14 operates the notification unit 14 based on the program and then interrupts the control of the actuation of the heating section 12.

[0064] The notification unit 15 is not particularly limited and may be, for example, an indicator light or a speaker.

[0065] The processing performed by the gas detection system 100 of the disclosure will now be described with reference to the Fig. The flowchart shown in Figure 4 explains this.

[0066] As in Fig. 4, in the gas detection system 100 of the disclosure, first, the control unit 14 actuates the heating section 12 at the predetermined interval (step S101).

[0067] Based on the signal input from the gas detection section 13, the control unit 14 then compares the concentration of hydrogen sulfide and / or sulfur-containing gas detected by the gas detection section 13 with the preset limit value (step S102). If the concentration of hydrogen sulfide and / or sulfur-containing gas is at or below the limit value, the control unit 14 repeats steps S101 and S102.

[0068] On the other hand, if the concentration of hydrogen sulfide and / or sulfur-containing gas is above the limit value, the control unit 14 performs processing to actuate the notification unit 15 (step S103). < < Battery system > >

[0069] As in Fig. As shown in Figure 5, the battery system 1000 of the disclosure includes a sulfide-based battery 20 and a gas detection system 100 of the disclosure. In the battery system 1000 of the disclosure, hydrogen sulfide, which is adsorbed by the hydrogen sulfide adsorbent 11, is generated by the sulfide-based battery.Specifically, the battery system 1000 of the disclosure includes a sulfide-based battery 20 and a gas detection system 100. The gas detection system includes a hydrogen sulfide adsorbent 11 that adsorbs hydrogen sulfide generated by the sulfide-based battery and releases hydrogen sulfide and / or sulfur-containing gas derived from hydrogen sulfide at or above a predetermined temperature, a heating section 12 that heats the hydrogen sulfide adsorbent, a gas detection section 13 that detects hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent, and a control unit 14 that operates the heating section at the predetermined interval. With this construction, it is possible to detect hydrogen sulfide-containing gas, which is sometimes generated by the sulfide-based battery 20, with high precision without relying on manual operation.For an understanding of the sulfide-based battery 20, reference is made to the present description of the battery pack of the disclosure. For an understanding of the gas detection system 100, reference is made to the present description of the gas detection system of the disclosure.

[0070] In the battery system 1000 of the disclosure, the sulfide-based battery 20 may be housed in the outer container 30. The other components of the gas sensing system 100, including the hydrogen sulfide adsorbent 11, the heating section 12, and the gas sensing unit 10 having the gas sensing section 13, may also be housed in the outer container 30. In other words, the structure of the battery system 1000 of the disclosure, except for the control unit 14 and the notification unit 15, may be the same as the battery pack 1 of the disclosure.

[0071] The processing performed by the battery system of the disclosure may be the same as the processing performed by the gas detection system 100. The processing performed by the battery system of the disclosure will therefore be described with reference to Fig. 4 and the description of the gas detection system of the disclosure contained therein. <Erstes Anwendungsbeispiel>

[0072] A first application example for the battery system 1000 of the disclosure will now be described.

[0073] For the first application example, the battery system 1000 of the disclosure may include a battery pack 1 with a sulfide-based battery 20, a gas sensing unit 10 as part of the gas sensing system 100, and an outer container 30 in which they are housed, as well as a control unit 14 and a notification unit 15 that form the gas sensing system 100. The battery pack may include an opening or discharge path that allows communication between the interior of the outer container and the exterior of the battery pack.

[0074] According to the first application example, a hydrogen sulfide removal agent can be disposed in the outer container or in the discharge path. When the hydrogen sulfide remover is disposed within the outer container, the hydrogen sulfide remover can be accommodated in a hydrogen sulfide removal agent container connected to the discharge path. The hydrogen sulfide removal agent can also be disposed in a meandering flow channel within the hydrogen sulfide removal agent container. The meandering flow channel can be formed by appropriately arranging a plurality of baffle plates having short lengths in the left-right direction with respect to the vertical cross section in the flow direction of the hydrogen sulfide within the hydrogen sulfide removal agent container.The hydrogen sulfide removal agent is not particularly limited as long as it is capable of removing hydrogen sulfide. The material of the hydrogen sulfide removal agent can be the same as or different from the material of the hydrogen sulfide adsorbent.

[0075] When hydrogen sulfide is generated from the sulfide-based battery in a battery system with this design, it is not only possible to detect hydrogen sulfide-containing gas with high precision using the gas detection section, but also to provide notification that hydrogen sulfide has been generated using the notification unit. The generated hydrogen sulfide can also be removed by the hydrogen sulfide removal agent. This allows the user to know that hydrogen sulfide has been generated and effectively prevent the generated hydrogen sulfide from leaking outside the battery pack. <Zweites Anwendungsbeispiel>

[0076] A second application example for the battery system 1000 of the disclosure will now be described.

[0077] For the second application example, which is similar to the first, the battery system 1000 of the disclosure may include a battery pack 1 with a sulfide-based battery 20, a gas detection unit 10 as part of the gas detection system 100, and an outer container 30 in which they are housed, as well as a control unit 14 and a notification unit 15 that form the gas detection system 100. The battery pack may include a circulation path for the circulation of the gas in the outer container. In this case, the battery pack may have a closed construction.

[0078] When hydrogen sulfide has been generated from the sulfide-based battery in a battery system having such a construction, similar to the first application example, it is possible not only to detect hydrogen sulfide-containing gas with high precision with the gas detection section, but also to provide a notification with the notification unit 15 that hydrogen sulfide has been generated.

[0079] A program pre-stored in memory can stop the control unit from operating the heating section when the gas detection section generates a signal for a detected hydrogen sulfide concentration higher than the threshold value, and the signal is input to the control unit. The control unit can then stop the control of operating the heating section based on the program. Such a design results in a final state where hydrogen sulfide is adsorbed on the hydrogen sulfide adsorbent. It is therefore possible to effectively prevent the generated hydrogen sulfide from leaking outside the battery pack.

[0080] For the first and second application examples, the battery pack may further include a ventilation section. The ventilation section is not particularly limited as long as it generates a gas flow, and may be, for example, a fan. If the battery pack includes a ventilation section, the ventilation section may be controlled by the control unit. In particular, the ventilation section may be activated when the concentration of hydrogen sulfide and / or sulfur-containing gas detected by the gas detection section exceeds the threshold value, for example. With such a structure, it is possible to increase the gas extraction efficiency in the battery pack for the first application example and to increase the gas circulation efficiency in the battery pack for the second application example. <Drittes Anwendungsbeispiel>

[0081] A third application example for the battery system 1000 of the disclosure will now be described.

[0082] For the third application example, the battery system 1000 of the disclosure can be used in a vehicle as a vehicle system. For the third application example, the battery system 1000 of the disclosure can, analogously to the first and second application examples, comprise a battery pack 1 with a sulfide-based battery 20, a gas detection unit 10 as part of the gas detection system 100 and an outer container 30 accommodating the gas detection unit 10, as well as a control unit 14 and a notification unit 15, which form the gas detection system 100.

[0083] The battery pack may have an opening or discharge path allowing communication between the interior of the outer container and the exterior of the vehicle, the opening or discharge path being provided at a location where negative pressure is generated during vehicle travel.

[0084] According to the third application example, a hydrogen sulfide removal agent can be arranged in the outer container or in the drain path. The case where the hydrogen sulfide removal agent is arranged inside the outer container can be understood by referring to the description of the first application example.

[0085] When hydrogen sulfide is generated from the sulfide-based battery with such a structure, similar to the first and second application examples, it is possible not only to detect hydrogen sulfide-containing gas with high precision with the gas detection section, but also to provide notification of hydrogen sulfide generation with the notification unit. Since the opening or exhaust path is provided at a location where negative pressure is generated during vehicle travel, hydrogen sulfide-containing gas flows from the interior of the outer container, where the pressure is relatively high, to the location outside the vehicle where negative pressure is generated and the pressure is relatively low, so that hydrogen sulfide-containing gas in the outer container can be discharged from the vehicle via the hydrogen sulfide removal means without requiring a venting section like in the first application example. < <gaserfassungsverfahren>>

[0086] The method of the disclosure for detecting gas comprises the following steps: adsorbing hydrogen sulfide with a hydrogen sulfide adsorbent 11, heating the hydrogen sulfide adsorbent with a heating section 12 to cause the release of the hydrogen sulfide and / or the sulfur-containing gas derived from the hydrogen sulfide from the hydrogen sulfide adsorbent, and detecting the hydrogen sulfide and / or the sulfur-containing gas released from the hydrogen sulfide adsorbent with a gas detecting section 13. This method enables the detection of hydrogen sulfide-containing gas with high precision.

[0087] The method of the disclosure for detecting gas includes adsorbing hydrogen sulfide by the hydrogen sulfide adsorbent 11. The hydrogen sulfide adsorbent 11 will be understood by reference to the present description of the gas detection unit of the disclosure.

[0088] The method for absorbing hydrogen sulfide with the hydrogen sulfide adsorbent is not particularly limited, and an example is a method of bringing the hydrogen sulfide into contact with the hydrogen sulfide adsorbent.

[0089] The method of the disclosure for detecting gas includes heating the hydrogen sulfide adsorbent with the heating region 12 to cause the release of hydrogen sulfide and / or sulfur-containing gas derived from hydrogen sulfide from the hydrogen sulfide adsorbent. The heating region 12 is understood by reference to the description of the gas detection unit of the disclosure contained herein.

[0090] The method for heating the hydrogen sulfide adsorbent is not particularly limited and can be, for example, conductive heating, convection heating, or radiant heating. Heating the hydrogen sulfide adsorbent causes hydrogen sulfide and / or sulfur-containing gas to be released from the hydrogen sulfide adsorbent.

[0091] The method of the disclosure for detecting gas includes detecting hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent by the gas detection section 13. The gas detection section 13 will be understood by reference to the present description of the gas detection unit of the disclosure.

[0092] The method for detecting hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent through the gas detecting portion is not particularly limited, and an example is a method in which the gas detecting portion is brought into contact with the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent.

[0093] In the method of the disclosure, the hydrogen sulfide adsorption device can be arranged within the outer container of the battery pack together with the sulfide-based battery, causing the hydrogen sulfide generated by the sulfide-based battery to be adsorbed by the hydrogen sulfide adsorption device. The method enables highly precise detection of hydrogen sulfide, which is often generated by a sulfide-based battery. The hydrogen sulfide adsorption device can include a gas detection unit according to the disclosure. LIST OF REFERENCE SYMBOLS 1 battery pack 10 Gas detection unit 11 Hydrogen sulfide adsorbents 12 Heating area 13 Gas detection area 14 Control unit 15 Notification unit 20 sulfide-based battery 30 outer containers 100 Gas Detection System 1000 battery system QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 2022-012308

[0005] < / gaserfassungsverfahren> < / benachrichtigungseinheit> < / steuerungseinheit> < / gaserfassungseinheit> < / gaserfassungssystem> < / gaserfassungseinheit> < / batteriepaket> < / gaserfassungsbereich> < / heizbereich> < / schwefelwasserstoffadsorptionsmittel> < / gaserfassungseinheit>

Claims

[1] Gas detection unit comprising: a hydrogen sulphide adsorbent which adsorbs hydrogen sulphide and releases the hydrogen sulphide and / or sulphur-containing gas derived from the hydrogen sulphide at or above a predetermined temperature, a heating area that heats the hydrogen sulfide adsorbent, and a gas detection region that detects the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent. [2] The gas detection unit according to claim 1, wherein the gas detection region is arranged above the hydrogen sulfide adsorbent. [3] The gas detection unit according to claim 1, wherein the heating section heats the hydrogen sulfide adsorbent to a temperature of 100°C or higher and 400°C or lower. [4] A battery pack comprising a sulfide-based battery, a gas detection unit according to any one of claims 1 to 3, and an outer container accommodating the sulfide-based battery and the gas detection unit, wherein the hydrogen sulfide is generated by the sulfide-based battery. [5] The battery pack of claim 4, wherein the hydrogen sulfide adsorbent is disposed below the sulfide-based battery. [6] Gas detection system comprising: a gas detection unit according to one of claims 1 to 3, and a control unit that operates the heating area at a predetermined interval. [7] A gas detection system according to claim 6, wherein: the gas detection system further comprises a notification unit, the control unit actuates the notification unit when the concentration of hydrogen sulfide and / or sulfur-containing gas detected by the gas detection area is higher than a limit value. [8] A battery system comprising a sulfide-based battery and a gas detection system according to claim 6, wherein the hydrogen sulfide is generated by the sulfide-based battery. [9] Gas detection method comprising the following steps: Adsorbing hydrogen sulfide with a hydrogen sulfide adsorbent, Heating the hydrogen sulfide adsorbent with a heating region to cause the hydrogen sulfide and / or sulfur-containing gas derived from the hydrogen sulfide to be released from the hydrogen sulfide adsorbent, and Detecting the hydrogen sulfide and / or sulfur-containing gas released from the hydrogen sulfide adsorbent with a gas detection region. [10] A gas detection method according to claim 9, wherein a hydrogen sulfide adsorption device is disposed in an outer container of a battery pack together with a sulfide-based battery, thereby causing hydrogen sulfide generated from the sulfide-based battery to be adsorbed by the hydrogen sulfide adsorption device.

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