Battery packs and vehicles

Abstract

To sense that a hydrogen sulfide adsorption amount of a desulfurization agent that adsorbs (absorbs) hydrogen sulfide is saturated, or that there is a possibility of saturation.SOLUTION: A unit cell 10 comprises a sulfide-based all-solid-state battery. A battery pack 200 includes a battery module 50 in which a plurality of the unit cells 10 is stacked between a pair of end plates 31, 32. The battery module 50 is housed in a battery case 90. A duct 60 is attached to an opening formed in the ceiling surface 92a of an upper case 92. A desulfurization agent 63 is disposed inside the duct 60, and is configured as a desulfurization unit Dsu. A hydrogen sulfide sensor 70 is disposed inside the duct 60. By detecting hydrogen sulfide by the hydrogen sulfide sensor 70, it is possible to sense that an adsorption amount of the hydrogen sulfide of the desulfurization agent 63 is saturated or that there is a possibility of saturation.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a battery pack and a vehicle. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2011-113803 (Patent Document 1) discloses that in a solid battery that uses a sulfur-based material for at least one of the positive electrode, negative electrode, and solid electrolyte, a hydrogen sulfide harmless agent is provided in a recess provided in a battery case (housing).

[0003] Patent Document 1 describes that hydrogen sulfide generated from an all-solid-state battery is absorbed by a hydrogen sulfide neutralizing agent to render it harmless. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-113803 Summary of the Invention [Problem to be solved by the invention]

[0005] There is a limit to the amount of hydrogen sulfide that a hydrogen sulfide detoxifying agent can absorb (adsorb). For this reason, it is preferable to detect when the amount of hydrogen sulfide adsorbed by the hydrogen sulfide detoxifying agent has reached saturation or when there is a possibility that it will reach saturation. However, Patent Document 1 does not mention this point.

[0006] An object of the present disclosure is to make it possible to detect whether the amount of hydrogen sulfide adsorption of a desulfurizing agent that adsorbs (absorbs) hydrogen sulfide has reached saturation or is likely to reach saturation. [Means for solving the problem]

[0007] (1) The battery pack of the present disclosure includes a battery consisting of a sulfide-based all-solid-state battery housed in a battery case, a communication passage connecting the inside and outside of the battery case, a desulfurizing agent provided in the communication passage for adsorbing hydrogen sulfide, and a hydrogen sulfide sensor provided in the communication passage for detecting hydrogen sulfide.

[0008] According to this configuration, the battery is a sulfide-based all-solid-state battery. In the present disclosure, a sulfide-based all-solid-state battery is one that contains a sulfur component in at least one of the positive electrode material and the solid electrolyte material. When the sulfur component contained in a sulfide-based all-solid-state battery reacts with moisture, hydrogen sulfide is generated. When air containing hydrogen sulfide inside the battery case is discharged to the outside through the communication passage, the hydrogen sulfide is purified (adsorbed) by the desulfurizing agent. This makes it possible to prevent hydrogen sulfide from being released to the outside of the battery case.

[0009] A hydrogen sulfide sensor is provided in the communication passage. Based on the hydrogen sulfide detected by the hydrogen sulfide sensor in the communication passage, it is possible to detect whether the amount of hydrogen sulfide adsorbed by the desulfurizing agent has reached saturation or is likely to reach saturation.

[0010] (2) The hydrogen sulfide sensor may be provided in the communication passage on the outside of the battery case relative to the desulfurizing agent.

[0011] According to this configuration, the hydrogen sulfide sensor is located in the connecting passage on the outside of the battery case relative to the desulfurization agent, so that when the amount of hydrogen sulfide adsorption by the desulfurization agent may be saturated, hydrogen sulfide is detected by the hydrogen sulfide sensor.

[0012] (3) The communication passage may include a narrow passage portion having a flow passage cross-sectional area smaller than other portions, and the hydrogen sulfide sensor may be provided in the narrow passage portion.

[0013] Hydrogen sulfide is heavier than air (having a greater specific gravity than air) and tends to accumulate at the bottom (vertically downward) of the communicating passage, so its concentration may vary within the communicating passage. With this configuration, in the narrow passage portion where the cross-sectional area of ​​the flow path is smaller than in other portions, the variation in hydrogen sulfide concentration is likely to be smaller, so hydrogen sulfide can be detected more reliably.

[0014] (4) The communicating passage may include a first desulfurization unit having a desulfurization agent, a second desulfurization unit having a desulfurization agent, and a connecting pipe connecting the first desulfurization unit and the second desulfurization unit, and the first desulfurization unit may be positioned closer to the outside of the battery case than the second desulfurization unit.

[0015] The air containing hydrogen sulfide in the battery case passes through the second desulfurization unit and then flows into the first inflow unit. With this configuration, the amount of hydrogen sulfide adsorbed by the second desulfurization unit reaches saturation first, so only the second desulfurization unit needs to be replaced as needed.

[0016] (5) A vehicle according to the present disclosure includes the battery pack described above in (1) to (4) and a control device. The control device is configured to issue a notification when the detected value of the hydrogen sulfide sensor satisfies a predetermined condition.

[0017] According to this configuration, for example, when the detection value of the hydrogen sulfide sensor satisfies the condition that the amount of hydrogen sulfide adsorption in the desulfurization agent is saturated, or when the detection value satisfies the condition that there is a high possibility of saturation, a notification can be sent to prompt replacement of the desulfurization agent. [Effects of the Invention]

[0018] According to the present disclosure, it is possible to detect whether the amount of hydrogen sulfide adsorbed by a desulfurizing agent that adsorbs (absorbs) hydrogen sulfide has reached saturation or is likely to reach saturation. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a diagram showing a schematic overall configuration of a vehicle equipped with a battery pack according to an embodiment of the present invention; [Figure 2]FIG. 2 is a diagram showing a schematic configuration of a battery pack. [Figure 3] 1(A) and 1(B) are diagrams illustrating the schematic configuration of a single cell. [Figure 4] FIG. 2 is a diagram illustrating functional blocks configured in the ECU. [Figure 5] 10(A) and 10(B) are diagrams illustrating a desulfurization unit Dsu according to a modified example. [Figure 6] 10(A) and 10(B) are diagrams illustrating a desulfurization unit Dsu according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0021] <First Embodiment> 1 is a diagram showing a schematic diagram of the overall configuration of a vehicle 100 equipped with a battery pack 200 according to the present embodiment. The vehicle 100 is equipped with a battery pack 200 that stores electric power for running. The vehicle 100 is configured to be able to run using the electric power stored in the battery pack 200. In the present embodiment, the vehicle 100 is an electric vehicle (BEV) that does not have an engine (internal combustion engine), but may also be a hybrid vehicle (HEV) or a plug-in hybrid vehicle (PHEV) that has an engine.

[0022] The vehicle 100 is equipped with a control device (ECU: Electronic Control Unit) 150. The ECU 150 is configured to perform charging control and discharging control of the battery pack 200. The ECU 150 includes a processor 151, a RAM (Random Access Memory) 152, and a storage device 153. The RAM 152 functions as a working memory that temporarily stores data processed by the processor 151. The storage device 153 stores programs as well as information used by the programs (for example, maps, formulas, and various parameters). The processor 151 executes the programs stored in the storage device 153, thereby performing various controls in the ECU 150.

[0023] The monitoring module 130 includes various sensors that detect the state (for example, voltage, current, and temperature) of the battery pack 200 (battery module 50), and outputs the detection results to the ECU 150. The battery pack 200 is charged (externally charged) by power supplied from a charging facility.

[0024] The vehicle 100 further includes a traveling drive unit 110, an HMI (Human Machine Interface) device 120, an MIL (Malfunction Indicator Lamp) 125, hazard lamps 140, an external display 160, and drive wheels W. The traveling drive unit 110 includes a PCU (Power Control Unit) and an MG (Motor Generator), not shown, and is configured to drive the MG using power stored in a battery pack 200 to travel the vehicle 100. The MG is also configured to perform regenerative power generation and supply the generated power to the battery pack 200.

[0025] The HMI device 120 includes an input device and a display device. The HMI device 120 may include a touch panel display. The MIL 125 is a warning light arranged on the instrument panel. The hazard lights 140 are lamps arranged on the front, rear, left and right sides of the vehicle 100, and are the same as turn signals (directional indicators), and function as emergency flashers. The external display 160 is, for example, an LED display, and is provided on the rear window so that the displayed content can be seen from outside the vehicle 100.

[0026] The battery pack 200 includes a battery case 90 and a battery module 50 housed in the battery case 90. The battery case 90 is composed of a lower case 91 and an upper case 92. In this embodiment, two battery modules 50 are housed in the space formed by the lower case 91 and the upper case 92. A breathing membrane 61 is provided in the upper case 92. The breathing membrane 61 will be described later. The battery pack 200 is mounted on the floor of the vehicle 100, and may be mounted either inside the cabin of the vehicle 100 or outside the cabin of the vehicle 100.

[0027] Fig. 2 is a diagram showing a schematic configuration of the battery pack 200. Fig. 2 is a cross section taken along line AA in Fig. 1. The battery module 50 is an assembled battery in which a plurality of unit cells 10 are connected. The plurality of unit cells 10 are stacked between a pair of end plates 31, 32.

[0028] Fig. 3 is a diagram illustrating a schematic configuration of a cell 10 according to the present embodiment. Fig. 3(A) is a top view of the cell 10. The cell 10 is a laminated all-solid-state battery that uses a laminate film as an exterior member 20, and a negative electrode terminal (negative electrode tab) 1a and a positive electrode terminal (positive electrode tab) 5a protrude from the exterior member 20. The laminate film may be, for example, a pouch made of aluminum laminate film, or may be a three-layer film with aluminum foil sandwiched between resin films.

[0029] FIG. 3(B) shows the all-solid-state battery laminate 15 housed in the exterior member 20, and shows the cross section BB of FIG. 3(A). The all-solid-state battery laminate 15 is configured such that three all-solid-state battery elements 8, each of which is composed of an anode current collector layer 1, an anode active material layer 2, a solid electrolyte layer 3, a cathode active material layer 4, and a cathode current collector layer 5 stacked in this order, share the anode current collector layer 1 and the cathode current collector layer 5, and are stacked in reverse order. The anode current collector layer 1 is connected to the anode terminal 1a, and the cathode current collector layer 5 is connected to the cathode terminal 5a. The number of all-solid-state battery elements 8 included in the all-solid-state battery laminate 15 may be one or four or more. The insulating film 7 provides insulation between the all-solid-state battery laminate 15 and the exterior member (laminate film) 20.

[0030] The cell 10 is a sulfide-based all-solid-state battery. In the present disclosure, a sulfide-based all-solid-state battery refers to a battery in which at least one of the material of the positive electrode active material layer 4 and the material of the solid electrolyte layer 3 contains a sulfur component. In this embodiment, the solid electrolyte layer 3 includes a sulfide-based solid electrolyte. For example, the sulfide-based solid electrolyte may be one made from phosphorus pentasulfide (P2S5) or lithium sulfide (Li2S). In this case, the positive electrode active material layer 4 may include, for example, lithium cobalt oxide, lithium nickel oxide, or lithium iron phosphate. When the solid electrolyte layer 3 is made of an oxide-based solid electrolyte, a sulfur-based positive electrode active material is used for the positive electrode active material layer 4. The sulfur-based positive electrode active material may be an organic sulfur compound or an inorganic sulfur compound. Both the solid electrolyte layer 3 and the positive electrode active material layer 4 may contain a sulfur component.

[0031] There is a concern that air may enter the battery cell 10 through a sealed portion of the exterior member 20 (laminate film), for example. If the entering air contains moisture, the sulfur component contained in the solid electrolyte layer 3 or the positive electrode active material layer 4 may react with the moisture to generate hydrogen sulfide, which may be released into the battery case 90.

[0032] Referring to Fig. 2, a plurality of unit cells 10 are arranged and stacked between a pair of end plates 31, 32. The stacked unit cells 10 are sandwiched between the pair of end plates 31, 32, and a predetermined restraining load is applied thereto by a restraining band or the like (not shown). The pair of end plates 31, 32 are fixed to a bottom plate 30 by brackets 41, 42. A battery module 50 consisting of the unit cells 10 stacked between the pair of end plates 31, 32, the bottom plate 30, etc. is fixed to a bottom surface 91a of a lower case 91. The battery case 90 is a housing that houses the battery module 50.

[0033] A duct 60 is provided in the upper case 92. The duct 60 is a communication passage that connects the inside and outside of the battery case 90, and when the internal pressure of the battery case 90 increases, the air inside the battery case 90 is discharged to the outside, and when the internal pressure of the battery case 90 decreases, the outside air (fresh air) is taken in. The duct 60 is attached to an opening formed in a ceiling surface 92a of the upper case 92.

[0034] Breathable membranes 61, 62 made of a breathable, waterproof (breathable, waterproof) sheet are provided at the ends of the duct 60. The breathable, waterproof (breathable, waterproof) sheet may be, for example, GORE-TEX (registered trademark). A desulfurizing agent 63 is disposed inside the duct 60. The desulfurizing agent 63 may be, for example, a pellet-shaped desulfurizing agent primarily composed of iron oxide, which chemically adsorbs hydrogen sulfide. Any material may be used as long as it adsorbs and absorbs the desulfurizing agent 63. When the internal pressure of the battery case 90 increases, the air inside the battery case 90 is discharged to the outside through the duct 60, as indicated by the dashed-dotted arrow. At this time, the hydrogen sulfide contained in the air is chemically adsorbed by the desulfurizing agent 63, and the hydrogen sulfide is purified. In this way, the duct 60 and the desulfurizing agent 63 are configured as a desulfurization unit Dsu.

[0035] A hydrogen sulfide sensor 70 is disposed inside the duct 60. The hydrogen sulfide sensor 70 detects the concentration of hydrogen sulfide (H2S) contained in the atmosphere and outputs a signal indicating the detection result to the ECU 150. The hydrogen sulfide sensor 70 may be, for example, a hot-wire semiconductor sensor or a controlled-potential electrolysis sensor. In this embodiment, the hydrogen sulfide sensor 70 is disposed in the duct 60 on the outside side of the battery case 90 relative to the desulfurization agent 63 (downstream of the flow of hydrogen sulfide contained in the air inside the battery case 90 when it is discharged).

[0036] When air containing hydrogen sulfide inside the battery case 90 is discharged to the outside of the battery case 90 through the duct 60, the hydrogen sulfide is purified (adsorbed) by the desulfurization agent 63, thereby preventing the hydrogen sulfide from being released to the outside of the battery case 90. When the amount of hydrogen sulfide adsorbed by the desulfurization agent 63 reaches saturation, it becomes difficult for the desulfurization agent 63 to adsorb hydrogen sulfide, and hydrogen sulfide flows from the desulfurization agent 63 to the outside of the battery case 90 (downstream of the flow of hydrogen sulfide when it is discharged). Furthermore, when the amount of hydrogen sulfide adsorbed by the desulfurization agent 63 approaches saturation, the hydrogen sulfide adsorption capacity of the desulfurization agent 63 decreases, and hydrogen sulfide may flow from the desulfurization agent 63 to the outside of the battery case 90. According to this embodiment, hydrogen sulfide is detected by the hydrogen sulfide sensor 70 arranged in the duct 60 on the outside side of the battery case 90 relative to the desulfurization agent 63, thereby detecting whether the amount of hydrogen sulfide adsorbed by the desulfurization agent 63 is saturated or may become saturated.

[0037] FIG. 4 is a diagram showing functional blocks configured in the ECU 150. The determination unit 150a determines whether a predetermined condition is satisfied based on the detection signal (detection value) of the hydrogen sulfide sensor 70. When the determination unit 150a determines that the predetermined condition is satisfied, the notification unit 150b issues a notification (announcement) using at least one of the HMI device 120, the MIL 125, the hazard lamps 140, and the external display 160. In this embodiment, when the determination unit 150a detects hydrogen sulfide with the hydrogen sulfide sensor 70, the notification unit 150b displays "DESULPHIDE UNIT REPLACEMENT REQUIRED" on the display device of the HMI device 120 and turns on the MIL 125. This notifies the user of the vehicle 100 that the desulfurization unit Dsu needs to be replaced. Note that "when hydrogen sulfide is detected by the hydrogen sulfide sensor 70" may refer to when the hydrogen sulfide concentration reaches a concentration detectable by the hydrogen sulfide sensor 70 (the lower limit of detection).

[0038] Furthermore, when the judgment unit 150a determines that the detection value (hydrogen sulfide concentration) of the hydrogen sulfide sensor 70 exceeds the set value, the notification unit 150b turns on the MIL 125, displays on the display device of the HMI device 120 a message requesting "replacement of desulfurization unit" and "stop / take refuge on the shoulder of the road," flashes the hazard lights 140, and displays "Caution (hydrogen sulfide)" on the external display.

[0039] According to this embodiment, by detecting hydrogen sulfide using the hydrogen sulfide sensor 70 disposed in the duct 60 on the external side of the battery case 90 relative to the desulfurization agent 63, it is possible to detect that the amount of hydrogen sulfide adsorbed by the desulfurization agent 63 has reached saturation, and to urge the user to replace the desulfurization agent 63 (desulfurization unit Dsu). In addition, when a large amount of hydrogen sulfide is being generated, it is also possible to issue a warning to those around the vehicle 100.

[0040] <Modification> FIG. 5 is a diagram illustrating a desulfurization unit Dsu according to a modified example. In the desulfurization unit Dsu shown in FIG. 5(A), the hydrogen sulfide sensor 70 is disposed in the duct 60 closer to the interior of the battery case 90 than the desulfurization agent 63 (upstream of the flow of hydrogen sulfide contained in the air inside the battery case 90 when it is discharged). In this case, the determination unit 150a integrates the hydrogen sulfide concentration Chs [ppm] detected by the hydrogen sulfide sensor 70 per unit time (e.g., 1 second) and determines that the predetermined condition is satisfied when this integrated value exceeds a predetermined value A. Then, the notification unit 150b displays "DESULFER UNIT REPLACEMENT REQUIRED" on the display device of the HMI device 120 and turns on the MIL 125. The predetermined value A is previously set through experiments or the like based on the ventilation volume inside the battery case 90, the saturation amount of hydrogen sulfide adsorption by the desulfurization agent 63, and the like.

[0041] In the desulfurization unit Dsu shown in FIG. 5(B), the hydrogen sulfide sensor 70 is provided in the duct 60 at a portion where the desulfurization agent 63 is disposed. In this case, the determination unit 150a integrates the hydrogen sulfide concentration Chs [ppm] detected by the hydrogen sulfide sensor 70 per unit time (for example, one second), and when this integrated value exceeds a predetermined value B, determines that the predetermined condition is satisfied. Then, the notification unit 150b displays "DESulfurization unit replacement required" on the display device of the HMI device 120 and turns on the MIL 125. The predetermined value B is set in advance through experiments or the like, and is set to a value smaller than the predetermined value A.

[0042] In these modified examples, if the detection value (hydrogen sulfide concentration) of the hydrogen sulfide sensor 70 continues to exceed the set value after the integrated value exceeds the predetermined value A or the predetermined value B, the notification unit 150b may further display on the display device of the HMI device 120 a message requesting "stop to the shoulder of the road / take refuge", flash the hazard lights 140, and display "Caution (hydrogen sulfide)" on the external display.

[0043] <Embodiment 2> FIG. 6 is a diagram illustrating a desulfurization unit Dsu according to a second embodiment. The second embodiment is similar to the first embodiment except for the configuration of the desulfurization unit Dsu. As shown in FIG. 6(A), the desulfurization unit Dsu according to the second embodiment is composed of five ducts 60a to 60e. The first duct 60a includes a breathing membrane 61 and is attached to an opening of the battery case 90 (upper case 92). A desulfurization agent 63 is disposed inside the second duct 60b and the fourth duct 60d. The third duct 60c connects the second duct 60b and the fourth duct 60d. The fifth duct 60e includes a breathing membrane 62 and communicates with the interior of the battery case 90 via the breathing membrane 62.

[0044] The first duct 60a and the second duct 60b are fastened to each other by fastening members fp at their respective flange portions. The fastening members fp may be, for example, clips or screw fasteners. The second duct 60b and the third duct 60c are fastened to each other by fastening members fp at their respective flange portions. The third duct 60c and the fourth duct 60d are fastened to each other by fastening members fp at their respective flange portions. The fourth duct 60d and the fifth duct 60e are fastened to each other by fastening members fp at their respective flange portions.

[0045] The second duct 60b and the fourth duct 60d, in which the desulfurization agent 63 is disposed, have substantially the same configuration and function as the replaceable desulfurization unit 60Ct. The third duct 60c connects the second duct 60b (desulfurization unit 60Ct) and the fourth duct 60d (desulfurization unit 60Ct) and corresponds to an example of a "connecting pipe" in the present disclosure. The second duct 60b (desulfurization unit 60Ct) corresponds to the "first desulfurization unit" in the present disclosure, and the fourth duct 60d (desulfurization unit 60Ct) corresponds to the "second desulfurization unit" in the present disclosure. The second duct 60b is disposed on the outside side of the battery case 90 (downstream of the flow when hydrogen sulfide contained in the air inside the battery case 90 is discharged) of the fourth duct 60d.

[0046] The cross-sectional area of ​​the third duct 60c is smaller than the cross-sectional area of ​​the other ducts (the first duct 60a, the second duct 60b, the fourth duct 60d, and the fifth duct 60e). The third duct 60c corresponds to an example of a "narrow passage section" in the present disclosure. A hydrogen sulfide sensor 70 is provided inside the third duct 60c.

[0047] In the second embodiment, when the determination unit 150a of the ECU 150 detects hydrogen sulfide using the hydrogen sulfide sensor 70, the notification unit 150b displays "DESulfurization unit replacement required" on the display device of the HMI device 120 and turns on the MIL 125. When hydrogen sulfide is detected by the hydrogen sulfide sensor 70, it is highly likely that the amount of hydrogen sulfide adsorption in the fourth duct 60d (desulfurization unit 60Ct) has saturated. This notifies the user that replacement of the fourth duct 60d (desulfurization unit 60Ct) is required, and encourages the user to replace the fourth duct 60d (desulfurization unit 60Ct).

[0048] When the amount of hydrogen sulfide adsorbed in the fourth duct 60d (desulfurization unit 60Ct) reaches saturation and replacement is required, the second duct 60b (desulfurization unit 60Ct) that has been used until now may be connected to the fifth duct 60e, as shown in FIG. 6(B). Then, a new desulfurization unit 60Ct may be connected to the first duct 60a. This is because when hydrogen sulfide is detected by the hydrogen sulfide sensor 70, the amount of hydrogen sulfide adsorbed in the second duct 60b (desulfurization unit 60Ct) still has a sufficient margin before saturation.

[0049] When the amount of hydrogen sulfide adsorbed in the fourth duct 60d (desulfurization unit 60Ct) becomes saturated, hydrogen sulfide flows through the third duct 60c into the second duct 60b (desulfurization unit 60Ct). At this time, if the concentration of hydrogen sulfide flowing through the third duct 60c is below the detection limit of the hydrogen sulfide sensor 70, the hydrogen sulfide sensor 70 cannot detect hydrogen sulfide. Even in such a case, hydrogen sulfide is adsorbed by the desulfurization agent 63 in the second duct 60b, and therefore, release of hydrogen sulfide to the outside of the battery case 90 can be suppressed.

[0050] In this second embodiment, the hydrogen sulfide sensor 70 is provided in the third duct 60c, which has a smaller cross-sectional area than the other ducts. Hydrogen sulfide is heavier than air (its specific gravity is greater than that of air), and its concentration may vary within the duct. Since the third duct 60c has a smaller cross-sectional area, the variation in the hydrogen sulfide concentration within the duct is likely to be smaller, allowing for more reliable detection of hydrogen sulfide.

[0051] In the above embodiment, an example has been described in which the battery pack 200 is mounted on the vehicle 100. The battery pack 200 may also be a stationary power storage device.

[0052] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0053] 1 anode current collector layer, 2 anode active material layer, 3 solid electrolyte layer, 4 cathode active material layer, 5 cathode current collector layer, 7 insulating film, 8 all-solid-state battery element, 10 single cell, 15 all-solid-state battery laminate, 20 exterior member, 30 bottom plate, 31, 32 end plate, 41, 42 bracket, 50 battery module, 60 duct, 61, 62 breathing membrane, 63 desulfurization agent, 70 hydrogen sulfide sensor, 90 battery case, 91 lower case, 92 upper case, 100 vehicle, 110 driving unit, 120 HMI device, 125 MIL, 130 monitoring module, 140 hazard lamp, 150 control unit (ECU), 150a determination unit, 150b notification unit, 160 external display, 200 battery pack, Dsu desulfurization unit.

Claims

1. A battery comprising a sulfide-based all-solid-state battery housed in a battery case; a communication passage that communicates the inside and outside of the battery case; a desulfurizing agent provided in the communication passage for adsorbing hydrogen sulfide; a hydrogen sulfide sensor provided in the communication passage for detecting hydrogen sulfide, The hydrogen sulfide sensor is provided in the communication passage on the outside side of the desulfurizing agent.

2. A battery comprising a sulfide-based all-solid-state battery housed in a battery case; a communication passage that communicates the inside and outside of the battery case; a desulfurizing agent provided in the communication passage for adsorbing hydrogen sulfide; a hydrogen sulfide sensor provided in the communication passage for detecting hydrogen sulfide, the communication passage includes a narrow passage portion having a flow path cross-sectional area smaller than that of other portions, The hydrogen sulfide sensor is provided in the narrow passage portion of the battery pack.

3. A battery comprising a sulfide-based all-solid-state battery housed in a battery case; a communication passage that communicates the inside and outside of the battery case; a desulfurizing agent provided in the communication passage for adsorbing hydrogen sulfide; a hydrogen sulfide sensor provided in the communication passage for detecting hydrogen sulfide, The communication passage is a first desulfurization unit having the desulfurization agent; a second desulfurization unit having the desulfurization agent; a connecting pipe connecting the first desulfurization unit and the second desulfurization unit, The first desulfurization unit is disposed on the outer side of the battery pack relative to the second desulfurization unit.

4. The communication passage is a first desulfurization unit having the desulfurization agent; a second desulfurization unit having the desulfurization agent; a connecting pipe connecting the first desulfurization unit and the second desulfurization unit, 3. The battery pack according to claim 1, wherein the first desulfurization unit is disposed closer to the outside than the second desulfurization unit.

5. The battery pack according to any one of claims 1 to 3; a control device; The control device The vehicle is configured to issue a notification when a detected value of the hydrogen sulfide sensor satisfies a predetermined condition.

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