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    • 2. 发明专利
    • SODIUM-SULFUR BATTERY MODULE
    • JPH11102726A
    • 1999-04-13
    • JP26326497
    • 1997-09-29
    • HITACHI LTD
    • HIRANUMA TAKESHITOKOI HIROMIWATABIKI NAOHISA
    • H01M10/39
    • PROBLEM TO BE SOLVED: To prevent the breakage of a battery caused by the flooding of a module by providing a through-part provided in a heat insulation container and an opening part of a clearance in a component of the container on a bottom surface of the module. SOLUTION: A unit cell 1 on a plate-like heat insulation member 3 is covered by a measure-shaped heat insulation member 2 to constitute a module. A through-part 7 for a current terminal 6 is provided in the plate-like heat insulation member 3. When the module is flooded with water, no large volume of water will not seep in as lorg as the temperature of the air inside the module is not drastically lowered because the through-part 7 of a heat insulation container 10 and an opening part of a clearance 8 are in the bottom of the heat insulation container 10. Even if the air temperature is lowered from the battery operation temperature to the normal temperature, the change in the volume of the air is about one half, and the extent is that merely the lower part of the unit cell 1 is immersed in water. Generally, the ceramics, and a ceramics jointed part with metal ate provided on an upper part of a battery container, and in this condition, no excessive thermal shock will be applied.
    • 3. 发明专利
    • SODIUM SULFUR BATTERY
    • JPH1116600A
    • 1999-01-22
    • JP16560097
    • 1997-06-23
    • HITACHI LTD
    • TOKOI HIROMIHIRANUMA TAKESHIWATABIKI NAOHISA
    • H01M10/39
    • PROBLEM TO BE SOLVED: To soundly keep a cell without injecting water from the battery upper part in battery cooling process by providing a non-condensing gas basin so as to cover the top parts of individual cells, and releasing the steam generated by the water intruded from the cell lower part in flooding to the outside of a heat insulating container. SOLUTION: In flooding of a battery, water is penetrated into a heat insulating container 3 through the clearance between the heat insulating container 3 and a heat insulating lid 4 according to a route shown by an allow 12. The penetrated water is fallen down to the bottom part of the heat insulating container 3 through the circumference of a non-condensing gas basin 10. The water penetrated into the heat insulating container 3 makes contact with the inner wall of the high-temperature heat insulating container 3 or the circumferential wall of the gas basin 10 to generate steam. Then, the internal pressure is raised to suppress the following penetration of water from the outside of the heat insulating container 3. The non-condensing gas present in the space of the heat insulating container 3 in the initial stage is hardly released out of the battery because of the presence of the gas basin 10. Even in temperature reducing process, water is never penetrated into the heat insulating vessel 3 at once, and an insulating part 8 can be soundly kept.
    • 4. 发明专利
    • CHEMICAL BATTERY AND ELECTRIC POWER STORAGE SYSTEM
    • JPH05205776A
    • 1993-08-13
    • JP1396192
    • 1992-01-29
    • HITACHI LTD
    • TOKOI HIROMINEMOTO KIYOMITSUKAWASAKI KATSUOWATABIKI NAOHISASHIMOYASHIKI SHIGEHIRO
    • H01M10/39
    • PURPOSE:To enhance the reliability of a battery by making a positive and a negative terminal conductive only when negative electrode active material is raised up to temperature equal to or more than its melting point, if the chemical battery is made up of a positive electrode region filled with positive electrode active material within a container, a negative electrode region filled with negative electrode active material within the container, and of solid electrolyte interposed between the aforesaid regions. CONSTITUTION:Na is filled in a Na electrode acting as a negative electrode as follows, the Na electrode is evacuated first, Na is filled in the uppermost section of a negative electrode container 4 by way of the uppermost section of a Na injection and electric current collection tube 8, and a filling port is hermetically sealed after filling has been over. The Na side tip end section of a negative electrode terminal 10 is then inserted into the electric current collection tube 8 thereafter. In this case, the tip end of the terminal 10 is so defined in dimension that its does not reach the level of Na. Namely, the length of the terminal 10 and the filling quantity of Na are adjusted in such a way that the container 4 acting as the terminal 10 and Na are in a non-contact condition. This thereby allows the level of Na within the electric current collection tube 8 to be positioned as indicated by the dotted line of a code number 12 at temperatures less than battery operating temperature without being brought into contact with the tip end of the terminal, and if temperature is equal to or more than battery operating temperature, the level is allowed to rise up to a position indicated by the solid line of a code number 13, so that electricity is conducted to the terminal 10.
    • 6. 发明专利
    • NA/X BATTERY
    • JPH0567474A
    • 1993-03-19
    • JP22896991
    • 1991-09-09
    • HITACHI LTD
    • TOKOI HIROMIWATABIKI NAOHISANEMOTO KIYOMITSUKAWASAKI KATSUOINOUE HISAMICHISHIMOYASHIKI SHIGEHIRO
    • H01M10/39
    • PURPOSE:To improve stability and energy efficiency in an Na/X battery by preventing Na electrode resistance from increasing or preventing recharge from becoming impossible through the whole battery charge/discharge period. CONSTITUTION:An Na/X battery is constituted in such a way that a negative electrode active material 7 using Na as its essential component is housed in a negative electrode container 4, and a positive electrode active material 5 using NaCl, FeCl, Se, bivalent S or quadrivalent S and so on as its essential component is housed in a positive electrode container 3, and a solid electrolyte tube 1 which only an Na ion can pass through is arranged between the negative electrode active material 7 and the positive electrode active material 5, and an Na filling tube and current collecting tube 8 arranged as an electric conductor between the negative electrode active material 7 and the negative electrode container 4 is blocked up in its bottom part, and an Na supply hole 16 is formed in the upper part, and Na is filed always in the Na filling and current collecting tube 8.
    • 8. 发明专利
    • RADIATOR PLATE FOR SOLAR CELL
    • JPS61292970A
    • 1986-12-23
    • JP13411085
    • 1985-06-21
    • HITACHI LTD
    • IMANI KAZUTAKEWATABIKI NAOHISA
    • H01L23/34H01L31/052
    • PURPOSE:To obtain a radiator plate functioning as a reflecting mirror in combination, which naturally cools a solar cell, without using a radiator plate exclusive for cooling the solar cell by manufacturing the reflecting mirror by a metal and operating the reflecting mirror as the radiator plate for the solar cell in combination. CONSTITUTION:High thermal conductive silicon adhesives 4 are fitted between the back of a cell 1 and a metallic plate 2, and heat is dissipated by a metallic mirror 3. A substrate for the reflecting mirror 3 is made of a metal (aluminum, copper or the like), and the adhesives 4 having high thermal conductivity is employed between the cell 1 and the substrate 2 in order to improve thermal conductivity. For enhance the efficiency of fins, the hypotenuse of the reflecting mirror is formed in approximately the same length as the cell, and thickness is brought to approximately 1mm (aluminum). The width of the reflecting mirror extends over several times as long as the cell and a beam-condensing ratio (the area of an opening/the area of the cell) approximately 4 at that time.
    • 9. 发明专利
    • Method and device for operating a flow-type sodium-sulfur battery
    • 用于操作流动型硫酸钠电池的方法和装置
    • JPS6132366A
    • 1986-02-15
    • JP15370284
    • 1984-07-24
    • Hitachi Ltd
    • TOKOI HIROMIYAMAMOTO HISASHISUMIDA ISAOWATABIKI NAOHISA
    • H01M10/39H01M8/18H01M10/42
    • H01M8/184H01M10/42Y02E60/528
    • PURPOSE:To enable a flow-type sodium-sulfur battery to be operated at stable constant output voltage by detecting the composition of sodium polysulfide contained in the active material of the positive electrode and automatically supplying the active material into the positive electrode according to the detection result. CONSTITUTION:A flow-type sodium-sulfur battery is constituted of a negative active material 1 made of molten sodium, a positive active material 2 made of molten sulfur and sodium polysulfide and a solid electrolyte 3 which conducts sodium ions. Detectors 21 and 22 for detecting the chemical composition of sodium polysulfide produced by discharge reaction, are installed in the upper stream and the downstream of a positive case 7. During discharging of the battery, the flow rate of sulfur is controlled by controlling flow control valves 14 and 15 by the output of the detector 21. During charging of the battery, sodium pentasulfide 19 is caused to flow in counter direction by the output of the detector 22. Accordingly, it is possible to prevent the variation in output voltage and to produce stable constant output voltage without depending upon the quantity of discharge electricity.
    • 目的:通过检测正极活性物质中所含的多硫化钠的组成,使流态钠硫电池以稳定的恒定输出电压工作,并根据检测自动向活性物质供应活性物质 结果。 构成:流动型钠硫电池由熔融钠制成的负极活性物质1,由熔融硫和多硫化钠制成的正极活性物质2和导入钠离子的固体电解质3构成。 用于检测由放电反应产生的多硫化钠的化学成分的检测器21和22安装在阳极盒7的上游和下游。在电池放电期间,通过控制流量控制阀来控制硫的流量 在电池充电期间,通过检测器22的输出使五硫化二砷19反向流动。因此,可以防止输出电压的变化并产生 稳定的恒定输出电压,而不依赖于放电量。
    • 10. 发明专利
    • Heat-exchange-part sealing type vacuum tube system solar heat collector
    • 热交换型密封型真空管系统太阳能热收集器
    • JPS59150252A
    • 1984-08-28
    • JP2284683
    • 1983-02-16
    • Hitachi Ltd
    • CHINEN MASANORIIMANI KAZUTAKEWATABIKI NAOHISASUMIDA ISAO
    • F24S10/70F24S10/95
    • F24J2/32F24J2/055Y02E10/44
    • PURPOSE:To improve heat collecting efficiency of a heat-pipe type vacuum tube system solar heat collector, by connecting a metal end plug, which is mounted on the end part of a vacuum glass tube, and a heat exchanger as a unitary body, and providing said heat exchanger in the vacuum glass tube. CONSTITUTION:An end plug 8 made of metal, which is mounted on the end of a vacuum glass tube 1, and a heat exchanger 4' are connected as a unitary body, and the heat exchanger 4' is sealed in the vacuum glass tube. Therefore the quantity of heat, which is conducted to atmosphere through the glass tube from the heat exchanger is minute. Since members, which are contacted with the atmosphere and radiate heat, are only the end plug 8 and a connecting pipe 7, both members are covered by a heat insulating material, and shielded. Then, even though the pipe 7 and a heat insulating cover 5 are made compact and heat collecting efficiency is improved, the amount of heat radiation can be suppressed to a lower value.
    • 目的:通过将安装在真空玻璃管的端部上的金属端塞和作为整体的热交换器连接起来,提高热管式真空管系太阳能集热器的集热效率,以及 在真空玻璃管中提供所述热交换器。 构成:安装在真空玻璃管1的端部的金属制的端塞8和热交换器4'作为一体连接,热交换器4'被密封在真空玻璃管内。 因此,从热交换器通过玻璃管传递到大气的热量是微小的。 由于与大气接触并散热的构件仅为端塞8和连接管7,所以两个构件都被绝热材料覆盖并被屏蔽。 然后,即使管7和隔热盖5紧凑并且集热效率提高,也可以将散热量抑制在较低的值。