WO2014068953A1 - 蓄電池システム - Google Patents
蓄電池システム Download PDFInfo
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- WO2014068953A1 WO2014068953A1 PCT/JP2013/006384 JP2013006384W WO2014068953A1 WO 2014068953 A1 WO2014068953 A1 WO 2014068953A1 JP 2013006384 W JP2013006384 W JP 2013006384W WO 2014068953 A1 WO2014068953 A1 WO 2014068953A1
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- WIPO (PCT)
- Prior art keywords
- storage battery
- battery
- nickel
- lead
- sub
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
- H01M10/26—Selection of materials as electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
- H01M10/30—Nickel accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M16/00—Structural combinations of different types of electrochemical generators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/34—Gastight accumulators
- H01M10/345—Gastight metal hydride accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0014—Alkaline electrolytes
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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 storage battery system in which a lead storage battery and a sub battery are connected in parallel.
- Lead-acid batteries have relatively stable performance against short-time high-current discharges and shallow-depth discharges, and are less expensive than nickel-metal hydride batteries and lithium-ion secondary batteries, but are not fully charged. If not maintained, it has the property of shortening the lifetime.
- lead storage batteries are often used for storage batteries for idling stop and energy regeneration. In such applications, the alternator of the vehicle is stopped while the lead-acid battery is discharged to improve the fuel efficiency by reducing the engine load, and the brake energy of the vehicle is recovered as regenerative energy. Things are also done.
- the self-discharge characteristics of the lead storage battery and the sub-battery are different from each other.
- a storage battery system including a lead storage battery and a sub-battery is used intermittently, such as an in-vehicle storage battery system, it is reused due to the difference in self-discharge characteristics of the lead storage battery and the sub-battery when not in use. Differences occur in the voltages of the lead storage battery and the sub-battery.
- the voltage drop of the sub battery is larger than the lead storage battery, that is, if the sub battery has more self-discharge than the lead storage battery, the charging current flows from the lead storage battery to the sub battery, so the charge state of the lead storage battery decreases, There is a problem that the durability of the lead storage battery is lowered.
- a storage battery system is a storage battery system in which a lead storage battery and a sub battery are connected in parallel, and the open circuit voltage drop due to self-discharge of the lead storage battery per day from the same voltage at the same temperature is expressed by ⁇ V1 ( V / day), and when the open circuit voltage drop due to the self-discharge of the sub-battery per day is ⁇ V2 (V / day), the relationship of ⁇ V1 ⁇ ⁇ V2 is satisfied.
- the circuit voltage drop ⁇ V1 due to the self-discharge per day of the lead acid battery is larger than the corresponding circuit voltage drop ⁇ V2 of the sub battery, ie
- the relationship of ⁇ V1 ⁇ ⁇ V2 is satisfied, even if the lead battery is charged from the sub battery, the lead battery is not charged to the sub battery. Therefore, according to the storage battery system according to one aspect of the present invention, charging from the lead storage battery to the sub-battery is suppressed, so that the storage battery system in which the performance of the lead storage battery is enhanced without lowering the durability of the lead storage battery. Can be provided.
- ⁇ Lead battery> As a lead storage battery used in each experimental example and reference example, a lead storage battery satisfying the following performance was used under the test conditions defined by the Battery Industry Association Standard (SBA S 0101). The rated voltage of this lead storage battery is 12V. 5 hour rate capacity: 48Ah Rated cold cranking current: 320A Charge acceptance: 6.0A
- a nickel positive electrode is a nickel sintered substrate that has a nickel sintered substrate filled with a positive electrode active material containing nickel hydroxide as a main component and added with any compound selected from zinc hydroxide and cobalt hydroxide. Using. A porous nickel sintered substrate prepared as follows was used.
- Nickel (Ni) powder was mixed and kneaded with methyl cellulose (MC) as a thickener, for example, a polymer hollow microsphere having a pore size of 60 ⁇ m, and water to prepare a nickel slurry.
- MC methyl cellulose
- nickel slurry was applied on both sides of the punching metal made of nickel-plated steel plate, it was heated at 1000 ° C in a reducing atmosphere to eliminate the thickener and polymer hollow microspheres, and to sinter the nickel powder together By doing so, a porous nickel sintered substrate was obtained.
- the obtained porous nickel substrate was measured with a mercury intrusion porosimeter (Pascal 140 manufactured by Faisons Instruments), the porosity was 85%.
- the resulting porous nickel sintered substrate was impregnated with a mixed aqueous solution of nickel nitrate (Ni (NO 3 ) 2 ) and zinc nitrate (Zn (NO 3 ) 2 ) or cobalt nitrate (Co (NO 3 ) 2 ). Soaked in the pores of the porous nickel sintered substrate, dried, and then immersed in an alkali treatment solution composed of an aqueous solution of sodium hydroxide (NaOH) having a specific gravity of 1.3. An alkali treatment was performed.
- Ni (NO 3 ) 2 nickel nitrate
- Zn (NO 3 ) 2 zinc nitrate
- Co (NO 3 ) 2 cobalt nitrate
- nickel nitrate and zinc nitrate or cobalt nitrate were converted into nickel hydroxide (Ni (OH) 2 ), zinc hydroxide (Zn (OH) 2 ), or cobalt hydroxide (Co (OH) 2 ). . Thereafter, the substrate was sufficiently washed with water to remove the alkaline solution and then dried.
- the hydrogen storage alloy negative electrode was prepared by filling a hydrogen storage alloy slurry in a negative electrode core made of nickel-plated mild steel punching metal as follows. For example, lanthanum (La), neodymium (Nd), magnesium (Mg), nickel (Ni), and aluminum (Al) are mixed at a ratio of the molar ratio of the following chemical formula, and this mixture is dissolved in a high frequency induction furnace. Was quenched to prepare an ingot of a hydrogen storage alloy represented by La 0.4 Nd 0.5 Mg 0.1 Ni 3.5 Al 0.2 . The obtained hydrogen storage alloy ingot was heat-treated, for example, for 10 hours at a temperature lower by 30 ° C. than the melting point of the hydrogen storage alloy.
- La lanthanum
- Nd neodymium
- Mg magnesium
- Ni nickel
- Al aluminum
- the obtained hydrogen storage alloy ingot was coarsely pulverized and then mechanically pulverized in an inert atmosphere, and the hydrogen storage alloy powder remaining between 400 mesh and 200 mesh was selected by sieving.
- the average particle diameter of the obtained hydrogen storage alloy powder was determined from the measured value of the particle size distribution using a laser diffraction / scattering particle size distribution measuring device, the average particle diameter corresponding to a mass integral of 50% (D50) was 25 ⁇ m. . This was used as a hydrogen storage alloy powder.
- the obtained hydrogen storage alloy powder With respect to 100 parts by mass of the obtained hydrogen storage alloy powder, 0.5 part by mass of SBR (styrene butadiene latex) as a water-insoluble polymer binder and 0. CMC (carboxymethyl cellulose) as a thickener are added. 03 parts by mass and an appropriate amount of pure water were added and kneaded to prepare a hydrogen storage alloy slurry.
- the obtained hydrogen storage alloy slurry was applied to both surfaces of the negative electrode core made of the above-described punching metal (made of nickel-plated steel plate), dried at 100 ° C., rolled to a predetermined packing density, and then predetermined.
- the hydrogen storage alloy negative electrode was produced by cutting into the following dimensions.
- the electrolytic solution is a mixed aqueous solution prepared by adjusting potassium hydroxide (KOH), sodium hydroxide (NaOH), and lithium hydroxide (LiOH) to a predetermined molar ratio and alkali concentration shown in Table 1 below as a tungsten compound.
- KOH potassium hydroxide
- NaOH sodium hydroxide
- LiOH lithium hydroxide
- a separator made of a polyolefin non-woven fabric having a basis weight of 55 g / cm 2 was interposed between the nickel positive electrode and the hydrogen storage alloy negative electrode manufactured as described above, and wound to prepare a spiral electrode group. At this time, at least one surface of the separator has an ammonia adsorption ability by performing a sulfonation treatment or using an ammonia adsorption ability fiber.
- the positive electrode current collector was welded to the end portion of the electrode plate core of the nickel positive electrode plate exposed at the upper end surface of the spiral electrode group.
- the negative electrode current collector was welded to the end portion of the electrode core body of the hydrogen storage alloy electrode plate exposed at the lower end surface.
- This spiral electrode body was inserted into an outer can, the negative electrode current collector and the bottom of the can were welded, and the electrolyte was poured into the outer can. Thereafter, the sealing body was welded to the current collecting lead, the sealing portion was crimped and sealed, and six types of cylindrical nickel-metal hydride batteries each having a battery capacity of 6.0 Ah were produced.
- These nickel metal hydride storage batteries 10 have a wound electrode body 14 in which a nickel positive electrode 11 and a hydrogen storage alloy negative electrode 12 manufactured as described above are wound in a state of being insulated from each other via a separator 13. is doing.
- the nickel positive electrode 11 is mainly composed of nickel hydroxide in a porous nickel sintered body 16 formed on both surfaces of a positive electrode core 15 made of a nickel-plated steel sheet punching metal, and is composed of zinc hydroxide and cobalt hydroxide.
- the positive electrode active material 17 to which any one of the selected compounds is added is filled.
- a negative electrode mixture layer 19 having hydrogen storage alloy powder as a negative electrode active material is formed on both surfaces of a negative electrode core 18 made of a nickel-plated mild steel punching metal.
- a negative electrode current collector 20 is resistance-welded to the negative electrode core 18 at the lower part of the wound electrode body 14, and a positive electrode current collector 21 is resistance-welded to the positive electrode core 15 at the upper part of the wound electrode body 14.
- the wound electrode body 14 is inserted into a bottomed cylindrical metal outer can 22 in which nickel is plated on iron, and the negative electrode current collector 20 and the bottom of the metal outer can 22 are spot-welded. Yes.
- the positive electrode current collector 21 is welded and electrically connected to the sealing body 23.
- An opening 25 is provided in the center of the positive electrode current collector 21, and a valve body 26 is disposed in the opening 25 so as to block the opening 25.
- a positive electrode cap 27 is provided on the upper surface of the sealing body 23 so as to cover the periphery of the opening 25 and be separated from the valve body 26 by a certain distance.
- the positive electrode cap 27 is appropriately provided with a gas vent hole (not shown).
- a spring 28 is provided between the inner surface of the positive electrode cap 27 and the valve body 26, and the valve body 26 is pressed by the spring 28 so as to close the opening 25 of the sealing body 23.
- the valve body 26 has a function as a safety valve for releasing the internal pressure when the internal pressure of the metal outer can 22 becomes high.
- the battery was charged until the electrolyte density showed a constant value three times in succession, and the open circuit voltage after being allowed to stand at room temperature for 24 hours was measured and obtained as an initial voltage.
- Each of the storage battery modules A to F is charged to 110% of the battery capacity with a constant current of 1 It, and then discharged to a predetermined SOC determined experimentally at a constant current of 1 It.
- the open circuit voltage after standing for a period of time was measured and determined as the initial voltage.
- the predetermined SOC determined experimentally in advance is a relationship between the open circuit voltage and the SOC after the storage battery module made of nickel metal hydride storage battery is left for 24 hours at room temperature, and the storage battery module is left for 24 hours at room temperature. The SOC when the open circuit voltage after being approximately equal to the initial voltage of the lead acid battery is shown.
- FIG. 1 a general charge / discharge behavior when switching from constant current discharge to constant voltage charge is shown in FIG.
- the charging current and the discharging current flow to both storage batteries both during charging and discharging.
- the discharge current of the nickel-metal hydride storage battery is larger than that of the lead-acid battery during discharge, and the charge current of the lead-acid battery during charging is excessively larger than that of the nickel-metal hydride battery, but it decreases quickly and decreases It is smaller than that of a storage battery.
- the nickel metal hydride storage battery which is a sub-battery, preferentially charges and discharges during charge / discharge. It can be seen that the life of the storage battery system can be extended because the load is reduced and the state close to full charge is maintained.
- the storage battery system of Experimental Example 1 in which the storage battery module A in which ⁇ V1 ⁇ V2 is combined with the lead storage battery has lower durability than the case of the lead storage battery alone. This is thought to be because the charge current flows from the lead storage battery to the storage battery module A due to the large self-discharge of the nickel hydride storage battery, and the SOC of the lead storage battery is reduced.
- the electrolytic solution contains LiOH
- the amount of tungsten in the electrolytic solution is 20 mg (storage battery module C) to 50 mg (storage battery modules D to F), and the hydroxylation in the electrolytic solution
- the storage battery modules C to F having a sodium concentration of 1.0 mol / L (storage battery module E) to 4.0 mol / L (storage battery module F) are combined with the lead storage battery
- durability is further improved. It was confirmed.
- Sodium hydroxide and tungsten in the electrolyte have a function to suppress a decrease in the charging efficiency of the nickel metal hydride storage battery, thereby improving the durability of the nickel metal hydride storage battery and further reducing the work of the lead storage battery. I think.
- At least one selected from a tungsten compound, a molybdenum compound, and a niobium compound is contained in the electrolytic solution in an amount of 20 mg or more and 50 mg or less in terms of tungsten, molybdenum, or niobium per gram of the electrolytic solution. It turns out that is preferable.
- the above experimental example shows an example using a nickel-metal hydride storage battery using a hydrogen storage alloy represented by La 0.4 Nd 0.5 Mg 0.1 Ni 3.5 Al 0.2 as a negative electrode active material as a sub-battery.
- nickel-metal hydride storage batteries using hydrogen storage alloys having other compositions can also be used.
- at least one element general formula as an anode active material is La x Re y Mg 1-x -y Ni n-a M a (Re is selected from rare earth elements excluding La: Nd, Sm, Y or the like
- a nickel-metal hydride storage battery using a hydrogen storage alloy represented by (M is at least one element selected from Al and Zn) can be used.
- a nickel hydride storage battery is used as the sub-battery.
- another secondary battery such as a lithium ion secondary battery can be used as the sub-battery.
- products with a nominal voltage of 6V (3 series), 12V (6 series) and 24V (12 series) are widely used, whereas nickel-metal hydride batteries with the same nominal voltage as lead acid batteries are used. And there are few products of lithium ion secondary batteries.
- the nominal voltage of each nickel metal hydride storage battery is 1.2V, it becomes 6V when 5 individual nickel metal hydride batteries are connected in series, 12V when connected in series, and 24V when 20 series are connected. It can be.
- the conventional in-vehicle power supply system 51 includes a configuration in which an alternator 52, a starter 53, and a lead storage battery 54 are connected in parallel to each other via a switch 55 as appropriate.
- the starter 53 operates as a motor for driving an engine (not shown) when the switch 55 at the time of initial start or start from the idle stop state is turned on. Electric power is supplied by discharging the lead storage battery 54.
- the alternator 12 operates as a generator for operating the engine or functioning as an engine brake, and the regenerative energy at this time is charged in the lead storage battery 54.
- a storage battery module 56A in which a plurality of nickel metal hydride storage batteries 56 as sub-batteries are connected in series is connected in parallel to the lead storage battery 54 in the on-vehicle power supply system 51 described above.
- a new in-vehicle power supply system 50A is configured by the alternator 52, the starter 53, and the storage battery system 50 formed by the lead storage battery 54 and the storage battery module 56A.
- the storage battery module 56A is appropriately connected with a control circuit 57, a temperature measuring means 58 such as a thermistor for measuring the temperature of the nickel metal hydride storage battery 56, a shunt resistor 59 for measuring the current flowing through the storage battery module 56A, and the like. Sometimes it is done.
- FIG. 3 shows an example in which two nickel hydride storage batteries 56 are connected in series as a storage battery module 56A as a sub-battery. Not specified. Furthermore, when a larger capacity sub-battery is required, a storage battery module 56A in which two 5-series modules are connected in series or a plurality of 10-series modules may be connected in parallel.
- the discharge current of the nickel-metal hydride storage battery 56 as a sub battery is larger than that of the lead storage battery 54 in the case of power supply to an auxiliary machine.
- the charging current of the lead storage battery 54 is excessively larger than that of the nickel metal hydride storage battery 56, but immediately decreases and becomes smaller than that of the nickel metal hydride storage battery 56.
- the nickel metal hydride storage battery 56 that is a sub-battery preferentially charges and discharges during charge and discharge. Since the discharge load of the storage battery 54 is reduced, the life of the storage battery system 50 can be extended.
Abstract
Description
各実験例及び参考例で使用する鉛蓄電池としては、電池工業会規格(SBA S 0101)で定める試験条件で、以下の性能を満たす鉛蓄電池を用いた。この鉛蓄電池の定格電圧は12Vである。
5時間率容量 :48Ah
定格コールドクランキング電流:320A
充電受入性 :6.0A
ニッケル正極は、基板となるニッケル焼結基板の多孔内に水酸化ニッケルを主成分とし、水酸化亜鉛、水酸化コバルトから選択したいずれかの化合物が添加された正極活物質が充填されたものを用いた。多孔質ニッケル焼結基板は以下のようにして作製したものを用いた。
上記の鉛蓄電池と上記表1に示した6種類の各蓄電池モジュールA~Fを用い、それぞれ以下の処理を行ってから並列接続した。
前記方法により所定開始電圧に調整した鉛蓄電池と蓄電池モジュールとを、個別に60℃環境で2日間放置したときの開路電圧を1日毎に測定した。放置期間と開路電圧を直線近似したときの傾きの絶対値から、1日当たりの開路電圧低下ΔV1およびΔV2を求めた。結果をまとめて表2に示した。
前記方法により所定開始電圧に調整した鉛蓄電池と蓄電池モジュールA~Fのそれぞれを、それぞれの開回路電圧の差が0.1V以内であることを確認してから、並列に接続し、実験例1~6の蓄電池システムを作製した。
13…セパレータ 14…巻回電極体 15…正極芯体
16…多孔質ニッケル焼結体 17…正極活物質 18…負極芯体
19…負極合剤層 20…負極集電体 21…正極集電体
22…金属外装缶 23…封口体 24…ガスケット
25…開口 26…弁体 27…正極キャップ
28…バネ 50…蓄電池システム 50A…車載用電源システム
51…従来の車載用電源システム部 52…オルタネーター 53…スターター
54…鉛蓄電池 55…スイッチ 56…ニッケル水素蓄電池
56A…蓄電池モジュール 57…制御回路 58…温度測定手段
59…シャント抵抗
Claims (4)
- 鉛蓄電池とサブバッテリとが並列接続された蓄電池システムであって、
同一温度で同一電圧から、前記鉛蓄電池の1日当たりの自己放電による開路電圧低下をΔV1(V/day)とし、前記サブバッテリの1日当たりの自己放電による開路電圧低下をΔV2(V/day)としたとき、
ΔV1≧ΔV2
の関係が満たされている蓄電池システム。 - 前記サブバッテリはニッケル水素蓄電池である、請求項1に記載の蓄電池システム。
- 前記ニッケル水素蓄電池は、電解液中に、タングステン化合物、モリブデン化合物、ニオブ化合物から選択された少なくとも1種が、電解液1g当たり、20mg以上、50mg以下で含有されている、請求項2に記載の蓄電池システム。
- 前記ニッケル水素蓄電池は、電解液中に水酸化ナトリウムが1.0mol/L以上、4.0mol/L以下で含有されている、請求項2又は3に記載の蓄電池システム。
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JP6605008B2 (ja) * | 2017-10-20 | 2019-11-13 | 本田技研工業株式会社 | 電源システム及び車両 |
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- 2013-10-29 US US14/432,216 patent/US20150280285A1/en not_active Abandoned
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Patent Citations (3)
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JP2010142044A (ja) * | 2008-12-12 | 2010-06-24 | Nec Tokin Corp | 微弱電力変換器 |
JP2011029010A (ja) * | 2009-07-27 | 2011-02-10 | Ntt Facilities Inc | リチウムイオン二次電池システムおよび管理装置への電力供給方法 |
JP2011176958A (ja) * | 2010-02-25 | 2011-09-08 | Denso Corp | 車載電源装置 |
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WO2016002135A1 (ja) * | 2014-07-03 | 2016-01-07 | パナソニックIpマネジメント株式会社 | 鉛蓄電池の劣化判定装置、鉛蓄電池の劣化判定方法、充電制御装置及び充電制御方法 |
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JPWO2014068953A1 (ja) | 2016-09-08 |
US20150280285A1 (en) | 2015-10-01 |
JP6225116B2 (ja) | 2017-11-01 |
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