WO2025004936A1 - 電池収容体および電池パック - Google Patents
電池収容体および電池パック Download PDFInfo
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- WO2025004936A1 WO2025004936A1 PCT/JP2024/022251 JP2024022251W WO2025004936A1 WO 2025004936 A1 WO2025004936 A1 WO 2025004936A1 JP 2024022251 W JP2024022251 W JP 2024022251W WO 2025004936 A1 WO2025004936 A1 WO 2025004936A1
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- housing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery container and a battery pack.
- Patent Document 1 describes a technology that efficiently removes hydrogen sulfide that may be generated inside a casing without increasing the thickness or volume of the battery cell by providing a hydrogen sulfide removal section at the communication port between the casing that contains the battery cell and the outside.
- Patent Document 1 does not take into consideration the impact of continued generation of hydrogen sulfide. In other words, it does not take into consideration the possibility that hydrogen sulfide, which is a flammable gas, may react with oxygen and burn if the hydrogen sulfide concentration inside the housing rises to a certain level.
- the object of the present invention is to provide a battery container and a battery pack that prevent flammable gas from burning even if it is generated inside.
- the battery container of the present invention has a housing having an air intake port and an exhaust port and housing at least one battery cell, a blower section that generates an air flow from the air intake port to the exhaust port inside the housing, and an oxygen removal section that removes oxygen from the air that flows into the housing through the air intake port.
- the battery pack of the present invention also has at least one battery cell, the battery container, and a control unit that controls the at least one battery cell.
- the oxygen concentration inside the housing can be reduced by the action of the air blowing section and oxygen removal section.
- the possibility of the flammable gas reacting with the oxygen inside the housing and burning can be reduced.
- FIG. 1 is a schematic configuration diagram of a battery pack according to a first embodiment of the present invention
- FIG. 5 is a schematic configuration diagram of a battery pack according to a second embodiment of the present invention.
- FIG. 11 is a schematic configuration diagram of a battery pack according to a third embodiment of the present invention.
- FIG. 13 is a schematic configuration diagram of a battery pack according to a fourth embodiment of the present invention.
- FIG. 13 is a schematic configuration diagram of a battery pack according to a fifth embodiment of the present invention.
- an all-solid-state battery containing a sulfide-based solid electrolyte is exemplified as a battery cell that can generate a flammable gas
- hydrogen sulfide is exemplified as a flammable gas targeted by the present invention
- the present invention is not limited thereto. That is, the flammable gas targeted by the present invention may be a flammable gas other than hydrogen sulfide generated due to an all-solid-state battery containing a sulfide-based solid electrolyte, for example, sulfur (including allotropes such as S, S 2 , and S 8 ).
- the flammable gas targeted by the present invention may be a vaporized gas of an organic solvent used in a nonaqueous electrolyte of a lithium ion battery.
- organic solvents examples include ethylene carbonate, propylene carbonate, fluoroethylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, ⁇ -butyrolactone, and propyl propionate.
- FIG. 1 is a schematic diagram of a battery pack according to a first embodiment of the present invention.
- the battery pack 1 has a plurality of battery cells 2 and at least a pair of electrode terminals (not shown).
- the plurality of battery cells 2 are electrically connected to each other.
- the connection form is not particularly limited, and may be in series or parallel, or a combination of these.
- at least a portion of the plurality of battery cells 2 may be restrained by a restraining member.
- At least a pair of electrode terminals are electrically connected to the plurality of battery cells 2 by an electric circuit (not shown) so that power can be taken from the plurality of battery cells 2.
- four battery cells 2 are shown in FIG. 1, the number of battery cells 2 included in the battery pack 1 is not limited to this.
- the battery pack 1 may have a plurality of battery modules (assembled batteries) each including a plurality of battery cells 2.
- the battery cells 2 may be modularized to form a battery module, and a plurality of such battery modules may be combined to form the battery pack 1.
- the battery cell 2 is an all-solid-state battery, and has a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode.
- the positive electrode includes a positive electrode collector and a positive electrode active material layer
- the negative electrode includes a negative electrode collector and a negative electrode active material layer.
- the positive electrode collector, positive electrode active material layer, solid electrolyte layer, negative electrode active material layer, and negative electrode collector are stacked in this order to form a laminate, which is housed in a battery case of a laminate type, a cylindrical type, a square type, or the like.
- a reinforcing layer made of a curable resin may be provided around the laminate, if necessary.
- the positive electrode current collector and the negative electrode current collector may each be a known material commonly used in all-solid-state batteries.
- the positive electrode current collector may be made of a metal material such as aluminum, stainless steel, or titanium, and may take the form of, for example, a foil, film, sheet, or mesh.
- the negative electrode current collector may be made of a metal material such as stainless steel, nickel, or copper, and may take the form of, for example, a foil, film, or sheet.
- the positive electrode active material layer contains at least a positive electrode active material
- the negative electrode active material layer contains at least a negative electrode active material.
- the positive electrode active material is not particularly limited as long as it is a material that absorbs and releases metal ions such as lithium ions, and for example, sulfur, lithium-containing transition metal oxides, transition metal fluorides, polyanion compounds, transition metal sulfides, etc. can be used.
- the negative electrode active material is not particularly limited as long as it is a material that absorbs and releases metal ions such as lithium ions, and for example, metallic lithium, metals or alloys that can be alloyed with lithium, carbon materials such as graphite and hard carbon, transition metal oxides, transition metal sulfides, silicon, etc. can be used.
- the positive electrode active material layer and the negative electrode active material layer may each contain a solid electrolyte, a binder, etc. as appropriate.
- the solid electrolyte layer contains at least a sulfide-based solid electrolyte.
- the sulfide solid electrolyte include glasses or glass ceramics such as Li 2 S-SiS 2 , Li 2 S-B 2 S 3 , Li 2 S-P 2 S 3 , Li 2 S-P 2 S 5 , Li 2 S-GeS 2 , Li 2 S-B 2 S 3 , Li 3 PO 4 -P 2 S 5 , and Li 4 SiO 4 -Li 2 S-SiS 2 , as well as Li 3.25 Ge 0.25 P 0.75 S 4 and Li 10 GeP 2 S 12 .
- the solid electrolyte layer may contain a binder or the like as appropriate, and may contain a solid electrolyte different from the sulfide-based solid electrolyte.
- solid electrolytes include halide-based solid electrolytes, oxide-based solid electrolytes, polymer-based solid electrolytes, hydride-based solid electrolytes, and nitride-based solid electrolytes.
- the battery pack 1 also has a battery housing 3 that houses multiple battery cells 2.
- the battery housing 3 is composed of a housing 11, an intake pipe 12, an exhaust pipe 13, an air blower 14, and an oxygen remover 15.
- the housing 11 has a function of housing a plurality of battery cells 2 while drawing out at least a pair of electrode terminals (not shown) to the outside.
- the housing 11 is provided with an intake port 11a for introducing air into the inside of the housing 11 and an exhaust port 11b for discharging air from the inside of the housing 11.
- fillers such as elastic materials, heat transfer materials, and heat insulating materials may be appropriately arranged in gaps between the battery cells 2 or between the battery cells 2 and the above-mentioned restraining members.
- the housing 11 is shown in a simplified manner in FIG.
- the plurality of battery cells 2 are housed in the housing 11 with at least a portion of them in direct or indirect contact with the housing 11 (for example, via the above-mentioned restraining member).
- the shape of the housing 11 is not particularly limited and can be set arbitrarily according to the shape and arrangement of the battery cells 2 to be housed. As described above, the housing 11 may house a plurality of battery modules each including a plurality of battery cells 2.
- One end (downstream end) of the intake pipe 12 is connected to the intake port 11a of the housing 11 via an on-off valve (not shown).
- One end (upstream end) of the exhaust pipe 13 is connected to the exhaust port 11b of the housing 11 via an on-off valve (not shown).
- the connection positions of the intake pipe 12 and the exhaust pipe 13 to the housing 11 are not particularly limited, but are preferably positioned opposite each other to ensure that air circulates evenly inside the housing 11.
- the intake pipe 12 may be provided with a filtering means such as an air filter to prevent foreign matter from entering from the outside.
- the blower 14 is provided in the exhaust pipe 13 and has the function of generating an air flow inside the housing 11.
- the blower 14 there are no particular limitations on the blower 14, and for example, a fan, blower, pump, compressor, etc. can be used.
- the output of the blower 14 is controlled by the control unit 4 described later, and the blower 14 may have the function of adjusting the flow rate of air flowing into the housing 11.
- power may be supplied to the blower 14 from the battery cell 2.
- a separate independent power source may be provided, and this allows the blower 14 to be reliably driven even in a situation where the output of the battery cell 2 must be limited or stopped, as described later.
- the air blower 14 since the air blower 14 generates an air flow from the intake pipe 12 to the exhaust pipe 13 inside the housing 11, even if hydrogen sulfide is generated from the battery cell 2, it can also be prevented from accumulating inside the housing 11. Therefore, the possibility that hydrogen sulfide will react with oxygen in the housing 11 and burn can be further reduced.
- the battery pack 1 has a control unit 4 that controls the blower unit 14 based on the detection result of the oxygen sensor 16.
- the control unit 4 controls the output of the blower unit 14 to adjust the flow rate of air (specifically, air from which oxygen has been removed) flowing into the housing 11 so that the oxygen concentration detected by the oxygen sensor 16 is less than the limit oxygen concentration of hydrogen sulfide. This makes it possible to reliably suppress the combustion of hydrogen sulfide regardless of the hydrogen sulfide concentration in the housing 11.
- the control unit 4 may also have a function of controlling the output of the battery cells 2 based on the detection result of the oxygen sensor 16.
- the blower 14 does not have to be constantly operated. That is, the air flow by the blower 14 does not have to be constantly performed. For example, when the oxygen concentration in the housing 11 falls sufficiently below the limit oxygen concentration of hydrogen sulfide, the on-off valves (not shown) of the intake pipe 12 and the exhaust pipe 13 may be closed and the operation of the blower 14 may be stopped. Then, when the oxygen sensor 16 detects that the oxygen concentration in the housing 11 has reached or is likely to reach the limit oxygen concentration of hydrogen sulfide or higher, the air flow by the blower 14 may be resumed.
- the other members (gas flow members) 12-15 of the battery container 3, excluding the housing 11, may be detachably attached to the housing 11.
- the gas flow members 12-15 may be normally removed, and may be attached to the housing 11 to start the air flow by the blower 14 when an increase in oxygen concentration is detected by the oxygen sensor 16, specifically, when an alarm informing the same is issued from the control unit 4.
- the gas flow members 12-15 may be attached only when an alarm is issued from the control unit 4.
- the oxygen sensor 16 may also be detachable from the housing 11, or an on-off valve may be provided between the oxygen sensor 16 and the housing 11. That is, in order to detect the oxygen concentration in the housing 11 periodically or as needed, the oxygen sensor 16 may be attached to the housing 11 each time, or the on-off valve between the oxygen sensor 16 and the housing 11 may be opened.
- the control unit 4 may be physically separated from the housing 11 as shown in the figure, but may also be directly attached to the housing 11, in which case it may be detachable. This can also reduce the number of parts during normal use of the battery pack 1.
- the intake pipe 12 may be provided with a filtering means for removing moisture from the air introduced into the housing 11.
- filtering means include a moisture removal column, a moisture removal filter, and a breathable waterproof sheet.
- the air in the housing 11 may be replaced in advance with a non-reactive gas by filling the inside of the housing 11 with a non-reactive gas while or after the battery cells 2 are housed in the housing 11.
- the non-reactive gas used in this case is not particularly limited as long as it is a gas that does not contain moisture and oxygen, and for example, an inert gas (nitrogen, argon, helium, etc.) can be used.
- the blower 14 is provided in the exhaust pipe 13, but its location is not particularly limited as long as it can generate an air flow inside the housing 11, and it may be, for example, in the intake pipe 12 or inside the housing 11.
- the opening and closing valve (not shown) of the exhaust pipe 13 may be adjustable to any opening degree. In this way, when hydrogen sulfide is generated from the battery cell 2, the opening degree can be reduced to increase the pressure inside the housing 11 and reduce the amount of hydrogen sulfide released from the battery cell 2.
- the position of the blower 14 is not limited to the above-mentioned position, and may be, for example, on the housing 11. That is, the blower 14 may be directly attached to the exhaust port 11b of the housing 11, and in that case, the oxygen remover 15 may be directly connected to the intake port 11a of the housing 11. Alternatively, the blower 14 may be directly attached to the intake port 11a of the housing 11, and in that case, the oxygen remover 15 may be directly connected to the inlet of the blower 14. Alternatively, the blower 14 may be directly attached to the intake port 11a of the housing 11 via the oxygen remover 15, in other words, directly attached to the inlet of the oxygen remover 15 that is directly connected to the intake port 11a of the housing 11. Therefore, in such a case, one or both of the intake piping 12 and the exhaust piping 13 may be omitted from the viewpoint of reducing the number of parts.
- providing the intake pipe 12 and the exhaust pipe 13 has the advantage that the intake position and the exhaust position relative to the housing 11 can be adjusted as desired. In other words, it becomes possible to select the optimal intake position and the exhaust position to suit the surrounding environment in which the battery pack 1 is installed. For example, by setting the intake position at a position that takes in as little air containing a lot of moisture and foreign matter as possible, the risk of the battery pack 1 breaking down can be reduced. Also, by placing the exhaust position as far away as possible from other devices and people in the vicinity, the risk of the exhausted air having a negative effect on them can be reduced. In this way, it is preferable to provide the intake pipe 12 and the exhaust pipe 13 in that the risk of the battery pack 1 breaking down and the risk of it having a negative effect on the surrounding environment can be reduced.
- Second Embodiment 2 is a schematic diagram of a battery pack according to a second embodiment of the present invention.
- This embodiment is a modification of the first embodiment, and differs from the first embodiment in that some additional configurations are provided. The following description will focus on the differences from the first embodiment.
- the hydrogen sulfide removal unit 21 is not particularly limited, and may be, for example, a cylindrical container made of a metal such as stainless steel filled with a hydrogen sulfide remover.
- Such removers may be known ones commonly used to remove hydrogen sulfide, such as ion exchange resin, activated carbon (particularly activated carbon impregnated with a basic compound such as sodium hydroxide or potassium carbonate), activated alumina (particularly activated alumina impregnated with potassium permanganate), zeolite, basic solids such as calcium oxide and calcium carbonate, basic liquids such as aqueous sodium hydroxide and aqueous sodium carbonate, and ionic liquids having a reactive site with acids such as amino groups.
- the exhaust pipe 13 may branch into two (via a three-way valve), with the hydrogen sulfide removal unit 21 provided in one of the branches, thereby making it possible to select the exhaust path for hydrogen sulfide.
- the blower 14 is provided inside the intake pipe 12 or the housing 11, the same effect can be obtained if an exhaust pipe separate from the exhaust pipe 13 is connected to the housing 11 (via an on-off valve).
- a hydrogen sulfide sensor 22 is provided to detect the presence or concentration of hydrogen sulfide in the housing 11, and the control unit 4 may control the blower 14 based on the detection result. For example, when hydrogen sulfide is detected by the hydrogen sulfide sensor 22, the on-off valves (not shown) of the intake pipe 12 and the exhaust pipe 13 may be opened and the blower 14 may be operated to generate an air flow inside the housing 11. That is, the flow of air by the blower 14 may be normally stopped from the viewpoint of reducing power consumption, and may be started in response to the generation of hydrogen sulfide from the battery cell 2.
- the blower 14 may be controlled to adjust the flow rate of air flowing into the housing 11 so that the hydrogen sulfide concentration detected by the hydrogen sulfide sensor 22 is less than the lower flammable limit, that is, the outflow amount of gas containing hydrogen sulfide from the housing 11 may be adjusted.
- the output of the battery cells 2 may be controlled based on the detection result of the hydrogen sulfide sensor 22. For example, when hydrogen sulfide is detected by the hydrogen sulfide sensor 22, the output of at least some of the battery cells 2 may be limited or stopped for safety reasons.
- the detection result of the hydrogen sulfide sensor 22 may be stored in the control unit 4 or transmitted to a server or a blockchain network via the control unit 4 for immediate or future use.
- the hydrogen sulfide sensor 22 is not particularly limited, and any known hydrogen sulfide sensor, such as a constant potential electrolysis type, a semiconductor type, a thermal conduction type, or an electrical resistance type, can be used.
- the position of the hydrogen sulfide sensor 22 is not limited to the position shown in the figure, as long as it can detect the presence or concentration of hydrogen sulfide in the housing 11. In the example shown in the figure, only one hydrogen sulfide sensor 22 is installed in the housing 11, but multiple hydrogen sulfide sensors 22 may be installed. In that case, a hydrogen sulfide sensor 22 may be installed in the vicinity of each battery cell 2.
- One of the multiple hydrogen sulfide sensors 22 may be installed downstream of the hydrogen sulfide removal unit 21 to detect whether the hydrogen sulfide removal unit 21 has been broken through. If the hydrogen sulfide removal unit 21 has been broken through, a notification to notify the user may be output from the control unit 4.
- multiple hydrogen sulfide sensors 22 when multiple hydrogen sulfide sensors 22 are used, they may be of the same type, but preferably of different types. This allows the validity of the detection result of one hydrogen sulfide sensor 22 to be evaluated using another hydrogen sulfide sensor 22 of a different type, and, for example, it is possible to diagnose whether the hydrogen sulfide sensor 22 is malfunctioning due to the influence of coexisting gases.
- one hydrogen sulfide sensor 22 may perform detection at all times, and the other hydrogen sulfide sensor 22 may perform detection only when the other hydrogen sulfide sensor 22 detects hydrogen sulfide. This allows the other hydrogen sulfide sensor 22 to provide a correct detection result even if the detection result of one hydrogen sulfide sensor 22 is erroneous.
- Hydrogen sulfide is generated due to an abnormality in the battery cell 2, and although the amount of hydrogen sulfide generated is small at the beginning of the abnormality, it may increase rapidly after a long time has passed. Therefore, the hydrogen sulfide removal unit 21 may deteriorate due to the hydrogen sulfide generated from the beginning of the abnormality, and even if an attempt is made to remove a large amount of hydrogen sulfide generated, it may not be completely removed and may leak to the outside. In preparation for such a case, multiple hydrogen sulfide removal units 21 may be provided, each of which functions as a backup for the other.
- a hydrogen sulfide removal unit 21 may also be provided in the other one.
- an exhaust pipe other than the exhaust pipe 13 may be connected to the housing 11, a hydrogen sulfide removal unit 21 may also be provided in the other exhaust pipe.
- the multiple hydrogen sulfide removal units 21 are of different types (i.e., characteristics), so that it becomes possible to select and use a hydrogen sulfide removal unit 21 with the optimal characteristics depending on the situation at that time.
- the battery pack 1 may have a temperature sensor 23 that detects the temperature in the housing 11, and a temperature adjustment unit 24 that is controlled by the control unit 4 based on the detection result of the temperature sensor 23 and adjusts the temperature of the air flowing into the housing 11.
- the output of at least some of the battery cells 2 may be adjusted based on the detection result of the temperature sensor 23. For example, when the temperature detected by the temperature sensor 23 is outside a predetermined range, the output of at least some of the battery cells 2 may be limited or stopped.
- the temperature sensor 23 is not particularly limited, and for example, a known temperature sensor such as a contact type or a non-contact type can be used. Examples of contact type temperature sensors include a thermocouple, a resistance temperature detector, and a thermistor, and examples of non-contact type temperature sensors include a radiation thermometer.
- the position of the temperature sensor 23 is not limited to the position shown in the figure, as long as it can detect the temperature inside the housing 11. In the example shown in the figure, only one temperature sensor 23 is installed in the housing 11, but multiple temperature sensors 23 may be installed. In that case, a temperature sensor 23 may be installed in the vicinity of each battery cell 2.
- the detection result of the temperature sensor 23 may be stored in the control unit 4 for immediate or future use, or may be transmitted to a server or a blockchain network through the control unit 4.
- the temperature adjustment unit 24 is not particularly limited, and for example, a combination of a known cooling device such as an air-cooled type, a water-cooled type, or a refrigerant type and a known heating device such as an electric heat type or a heat pump type can be used.
- the position of the temperature adjustment unit 24 is not limited to the position shown in the figure, as long as it can adjust the temperature of the battery cell 2.
- the temperature adjustment unit 24 may be provided inside the housing 11 to directly adjust the temperature of the battery cell 2, or may be provided outside the housing 11 to indirectly adjust the temperature of the battery cell 2 via the housing 11.
- the hydrogen sulfide removal unit 21 may be detachable from the housing 11 together with the exhaust pipe 13, and the temperature adjustment unit 24 may be detachable from the housing 11 together with the intake pipe 12.
- the hydrogen sulfide sensor 22 and the temperature sensor 23 may also be detachable from the housing 11, like the oxygen sensor 16.
- the oxygen removal unit 15 is replaced with a new one periodically or according to the usage conditions, and when the predetermined replacement time arrives or replacement becomes necessary, a notification is preferably output from the control unit 4 to inform the user.
- the notification at this time is preferably converted into a signal that appeals to the user's five senses, such as sight and hearing, and then output.
- the oxygen removal unit 15 when replacing the oxygen removal unit 15, it is preferable that the oxygen removal unit 15 is provided with an identifier 25 including its own identification information in order to confirm whether or not it satisfies the specified conditions of use, such as being a genuine product and having not exceeded its expiration date.
- the identifier 25 is not particularly limited, and may be, for example, an information storage medium such as a wireless tag, or a code such as a one-dimensional code or a two-dimensional code, but is preferably a code, and more preferably a two-dimensional code such as a QR code (registered trademark).
- the timing at which the control unit 4 acquires and transmits data on the usage status of each device is not particularly limited, and may be, for example, regular, or irregular, such as automatically in response to certain conditions or by remote control from outside. This allows each usage status to be more reliably understood. However, if similar data transmission is also performed from multiple other battery packs, it is preferable that the data transmission by the control unit 4 be performed at a different timing from those, so that data transmission can be performed reliably without congesting the communication lines or server. Note that the control unit 4 is preferably powered and driven by an independent power source separate from the battery cells 2, so that data transmission can be performed reliably even if the output of the battery cells 2 must be stopped.
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Abstract
Description
図1は、本発明の第1の実施形態に係る電池パックの概略構成図である。
図2は、本発明の第2の実施形態に係る電池パックの概略構成図である。本実施形態は、第1の実施形態の変形例であり、いくつかの付加的な構成が設けられている点で第1の実施形態と異なっている。以下、第1の実施形態との相違点を中心に説明する。
図3は、本発明の第3の実施形態に係る電池パックの概略構成図である。本実施形態は、第1の実施形態の変形例であり、吸気配管と排気配管の構成が変更されている点で第1の実施形態と異なっている。以下、第1の実施形態との相違点を中心に説明する。
図4は、本発明の第4の実施形態に係る電池パックの概略構成図である。本実施形態は、第3の実施形態の変形例であり、循環配管が省略されている点で第3の実施形態と異なっている。以下、第3の実施形態との相違点を中心に説明する。
図5は、本発明の第5の実施形態に係る電池パックの概略構成図である。本実施形態は、第1の実施形態の変形例であり、筐体の構成が変更され、それに伴い吸気配管と排気配管の構成が変更されている点で第1の実施形態と異なっている。以下、第1の実施形態との相違点を中心に説明する。
2 電池セル
3 電池収容体
4 制御部
11 筐体
11a 吸気口
11b 排気口
12 吸気配管
13 排気配管
14 送風部
15 酸素除去部
16 酸素センサ
21 硫化水素除去部(可燃性ガス除去部)
22 硫化水素センサ(ガスセンサ)
23 温度センサ
24 温度調整部
25 識別子
31 循環配管
32 圧力センサ
33 圧力調整部
41 収容室
41a 吸気口
41b 排気口
Claims (25)
- 吸気口および排気口を有し、少なくとも1つの電池セルを収容する筐体と、
前記筐体の内部に前記吸気口から前記排気口に向かう空気の流れを発生させる送風部と、
前記吸気口を通じて前記筐体内に流入する前記空気中の酸素を除去する酸素除去部と、を有する電池収容体。 - 前記吸気口に一端が接続された吸気配管と、
前記排気口に一端が接続された排気配管と、を有し、
前記送風部は、前記筐体の内部、前記吸気配管、または前記排気配管に設けられ、前記酸素除去部は、前記吸気配管に設けられている、請求項1に記載の電池収容体。 - 前記吸気配管と、前記吸気配管の他端と他端が接続された前記排気配管とからなり、前記筐体内の空気を循環させる循環配管を有する、請求項2に記載の電池収容体。
- 前記酸素除去部は、前記筐体上に設けられ、前記排気口および前記吸気口にそれぞれ直接連通して前記筐体内の空気を循環させる入口および出口を有する、請求項1に記載の電池収容体。
- 前記送風部を制御する制御部を有する、請求項1から4のいずれか1項に記載の電池収容体。
- 前記筐体内の酸素濃度を検出する酸素センサを有し、
前記制御部は、前記酸素センサにより検出された前記酸素濃度が前記少なくとも1つの電池セルから発生する可燃性ガスの限界酸素濃度未満になるように、前記送風部を制御して前記筐体内に流入する前記空気の流量を調整する、請求項5に記載の電池収容体。 - 前記筐体内の可燃性ガスの存在または濃度を検出するガスセンサを有し、
前記制御部は、前記ガスセンサにより検出された前記可燃性ガスの濃度が燃焼下限値未満になるように、前記送風部を制御して前記筐体内に流入する前記空気の流量を調整する、請求項5に記載の電池収容体。 - 前記筐体内の酸素濃度を検出する酸素センサを有し、
前記制御部は、前記酸素センサにより検出された前記酸素濃度が前記少なくとも1つの電池セルから発生する可燃性ガスの限界酸素濃度以上になるか、またはその可能性があるときに、前記送風部を作動させて前記空気の流れを生成する、請求項5に記載の電池収容体。 - 前記筐体内の圧力を検出する圧力センサと、前記圧力センサの検出結果に基づいて前記制御部により制御され、前記筐体内の圧力を調整する圧力調整部と、を有する、請求項5に記載の電池収容体。
- 前記酸素除去部には、前記酸素除去部の識別情報を含む識別子が付与され、
前記制御部は、前記識別子から読み取られた前記識別情報に基づいて、前記酸素除去部が所定の条件を満たすものであるか否かを判定する、請求項5に記載の電池収容体。 - 前記筐体内の温度を検出する温度センサと、前記温度センサの検出結果に基づいて前記制御部により制御され、前記筐体内の温度を調整する温度調整部と、を有する、請求項5に記載の電池収容体。
- 前記制御部は、少なくとも前記送風部の使用状況に基づいて、前記酸素除去部の寿命を予測する、請求項5に記載の電池収容体。
- 前記制御部は、位置情報を取得し、該取得した位置情報と少なくとも前記送風部の使用状況とを外部に送信する、請求項5に記載の電池収容体。
- 前記少なくとも1つの電池セルから発生し、前記空気の流れによって前記排気口から排出される可燃性ガスを除去する可燃性ガス除去部を有する、請求項1から4のいずれか1項に記載の電池収容体。
- 前記吸気配管と前記排気配管と前記送風部と前記酸素除去部とは、前記筐体に着脱可能に取り付けられている、請求項2または3に記載の電池収容体。
- 前記筐体は、それぞれが電池セルを収容する複数の収容室を備え、
前記吸気配管と前記排気配管の前記一端は、それぞれが複数に分岐して前記複数の収容室に接続されている、請求項2または3に記載の電池収容体。 - 前記複数の収容室内の酸素濃度を検出する少なくとも1つの酸素センサと、
前記少なくとも1つの酸素センサの検出結果に基づいて、前記複数の収容室のいずれの収容室に前記空気の流れを発生させるかを切り替える制御部と、を有する、請求項16に記載の電池収容体。 - 少なくとも1つの電池セルと、
請求項1から4のいずれか1項に記載の電池収容体と、
前記少なくとも1つの電池セルを制御する制御部と、を有する電池パック。 - 前記電池収容体が、前記筐体内の酸素濃度を検出する酸素センサを有し、
前記制御部は、前記酸素センサにより検出された前記酸素濃度が前記少なくとも1つの電池セルから発生する可燃性ガスの限界酸素濃度以上になるか、またはその可能性があるときに、前記少なくとも1つの電池セルの出力を制限または停止する、請求項18に記載の電池パック。 - 前記電池収容体が、前記筐体内の温度を検出する温度センサと、前記筐体内の可燃性ガスの存在を検出するガスセンサとの少なくとも一方を有し、
前記制御部は、前記温度センサと前記ガスセンサとの少なくとも一方の検出結果に基づいて、前記少なくとも1つの電池セルの出力を調整する、請求項18に記載の電池パック。 - 前記酸素除去部には、前記酸素除去部の識別情報を含む識別子が付与され、
前記制御部は、前記識別子から読み取られた前記識別情報に基づいて、前記酸素除去部が所定の条件を満たすものであるか否かを判定し、前記所定の条件を満たすものでないと判定した場合に前記少なくとも1つの電池セルの出力を行わない、請求項18に記載の電池パック。 - 前記電池収容体が、前記吸気口に一端が接続された吸気配管と、前記排気口に一端が接続され、前記吸気配管の他端に他端が接続された排気配管とからなり、前記筐体内の空気を循環させる循環配管と、前記筐体内の圧力を検出する圧力センサとを有し、
前記制御部は、前記圧力センサの検出結果に基づいて、前記少なくとも1つの電池の出力を調整する、請求項18に記載の電池パック。 - 複数の電池セルと、
請求項16に記載の電池収容体と、
前記複数の電池セルを制御する制御部と、を有する電池パック。 - 前記電池収容体が、前記複数の収容室内の酸素濃度を検出する少なくとも1つの酸素センサを有し、
前記制御部は、前記少なくとも1つの酸素センサの検出結果に基づいて、前記複数の電池セルのいずれの電池セルの出力を制限または停止するかを切り替える、請求項23に記載の電池パック。 - 少なくとも1つの電池セルを収容する筐体の内部に気体を流通させる気体流通ユニットであって、
両端が前記筐体に接続され、前記筐体内の空気を循環させる循環配管と、
前記循環配管に設けられ、前記筐体内に空気の流れを発生させる送風部と、
前記循環配管に設けられ、前記循環配管を流通する空気中の酸素を除去する酸素除去部と、を有する気体流通ユニット。
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| JP7810863B2 (ja) | 2023-11-02 | 2026-02-03 | エルジー エナジー ソリューション リミテッド | バッテリパック |
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