Patents Assigned to Nilar International AB
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Publication number: 20230176139Abstract: The present invention relates to a method for improving the operational efficiency of a battery pack (100) comprising at least two battery modules (10, 10?, 10?), wherein each battery pack is configured to have a common gas space (29). The method comprises the steps of: obtaining data (101) on the battery modules (10, 10?, 10?), wherein the data relates to the number of battery cells per battery module, the number of battery modules, the temperature of each battery module and the energy capacity of the battery modules; obtaining (102) an indication of the internal resistance (Ri1, Ri2, Ri3) for the battery modules; determining (104), in case a difference in indication parameters between any of the battery modules exceeds a first threshold value, a filling amount of oxygen to be filled into the battery pack; and initiating (107) filling of the battery pack based on the determined filling amount of oxygen.Type: ApplicationFiled: March 25, 2021Publication date: June 8, 2023Applicant: Nilar International ABInventors: Yang SHEN, Stina STARBORG
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Publication number: 20230102119Abstract: The present invention relates to a method for reconditioning of a battery module (1). The battery module (1) comprises two or more battery cells (2), and has a casing (4) encompassing the battery cells and enclosing a common gas space (5). The method comprises the steps of: obtaining data relating to the number of cells of the battery module and voltage over the battery cells; obtaining (102) an indicative parameter related to an internal resistance (Ri) of at least one of the battery cells; determining (104) based on the indicative parameter and the data on the battery module, determining (105a) whether the voltage indication over the at least one of the battery cells is range of voltage indication threshold (Ut0-Ut1), a filling amount of oxygen to be filled into the battery module; and filling (107) the amount of oxygen into the battery module in order to reduce the indicative parameter to a level below the first threshold value.Type: ApplicationFiled: March 25, 2021Publication date: March 30, 2023Applicant: Nilar International ABInventors: Yang SHEN, Stina STARBORG
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Patent number: 11196093Abstract: The invention relates to a starved metal hydride battery. The battery is characterized in that the battery further comprises adding of oxygen gas or hydrogen gas or hydrogen peroxide or a combination thereof in order to rebalance the electrodes and replenish the electrolyte by reactions with the electrode materials.Type: GrantFiled: March 18, 2020Date of Patent: December 7, 2021Assignee: Nilar International ABInventor: Dag Noréus
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Publication number: 20210036381Abstract: The present disclosure concerns a method of producing an activated negative electrode powder for use in nickel-metal hydride (NiMH) batteries, the method comprising the steps: a) providing at least one previously cycled NiMH battery; b) isolating a negative electrode powder from the previously cycled NiMH battery; c) wet-milling or milling the negative electrode powder, thereby obtaining a mixture of the activated negative electrode powder and a byproduct rich in rare earth hydroxides; and d) separating the activated negative electrode powder from the byproduct. The disclosure further relates to an activated negative electrode powder produced by the said method, as well as battery electrodes and batteries comprising such a powder.Type: ApplicationFiled: November 28, 2018Publication date: February 4, 2021Applicant: Nilar International ABInventor: Dag NORÉUS
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Publication number: 20200243809Abstract: A battery module casing (2) configured to house at least one battery cell, said battery module casing (2) comprising: a first metal plate (4), configured to form a positive terminal of a battery module and to be positioned on a first side of said at least one battery cell, a second metal plate (5), configured to form a negative terminal of a battery module (1) and to be positioned on an opposite second side of said at least one battery cell, a lateral wall element (6) configured to extend around a lateral periphery of said at least one battery cell, wherein the lateral wall element (6) is located between said first metal plate (4) and said second metal plate (5), and wherein said lateral wall element (6) comprises an electrically isolating material and is sealingly attached to the first metal plate (4) and to the second metal plate (5) respectively.Type: ApplicationFiled: December 14, 2017Publication date: July 30, 2020Applicant: Nilar International ABInventors: Andreas NORDSTRAND, Anders ERIKSSON
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Publication number: 20200220226Abstract: The invention relates to a starved metal hydride battery. The battery is characterized in that the battery further comprises adding of oxygen gas or hydrogen gas or hydrogen peroxide or a combination thereof in order to rebalance the electrodes and replenish the electrolyte by reactions with the electrode materials.Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Applicant: Nilar International ABInventor: Dag NORÉUS
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Patent number: 10637104Abstract: The invention relates to a starved metal hydride battery. The battery is characterized in that the battery further comprises added oxygen gas or hydrogen gas or hydrogen peroxide or a combination thereof in order to rebalance the electrodes and replenish the electrolyte by reactions with the electrode materials.Type: GrantFiled: October 19, 2016Date of Patent: April 28, 2020Assignee: Nilar International ABInventor: Dag Noréus
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Publication number: 20190148798Abstract: The present disclosure concerns a method of producing a nickel-containing hydrogen storage alloy for use in a nickel metal hydride battery, the method comprising the steps: i. Providing a mixed active material comprising used positive electrode active material and used negative electrode active material; ii. Reducing the mixed active material, thereby obtaining a reduced active material; iii. Adding one or more metals to the reduced active material; iv. Remelting the mixture obtained in step iii; thereby obtaining a nickel-containing hydrogen storage alloy. The present disclosure also concerns nickel-containing hydrogen storage alloys obtained by the disclosed method.Type: ApplicationFiled: May 23, 2017Publication date: May 16, 2019Applicant: Nilar International ABInventors: Martin HÄGGBLAD SAHLBERG, James LUDICK
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Publication number: 20190058225Abstract: The invention relates to a starved metal hydride battery. The battery is characterized in that the battery further comprises added oxygen gas or hydrogen gas or hydrogen peroxide or a combination thereof in order to rebalance the electrodes and replenish the electrolyte by reactions with the electrode materials.Type: ApplicationFiled: October 19, 2016Publication date: February 21, 2019Applicant: Nilar International ABInventor: Dag NORÉUS
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Patent number: 9653917Abstract: The present invention relates to an energy management system comprising an energy storage, a control system and a power converter supplying power to a load. The energy storage is arranged in individual energy units and the power converter is provided with a switching system for controlling the voltage over the load. The switching system comprises multiple parallel-connected power switches and at least one of the power switches is connected to each energy unit. The control system comprises individual control units, each being configured to monitor the status of a dedicated energy unit and produce an individual enable signal indicative of the status. Each power switch is configured to be controlled by the individual enable signal and a first control signal, wherein the control system is configured to connect multiple energy units in parallel to the load.Type: GrantFiled: June 28, 2012Date of Patent: May 16, 2017Assignee: Nilar International ABInventor: Richard Howlett
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Patent number: 9548488Abstract: An electrode for a biplate assembly includes an active material made from a compressed powder 11, and a non-metal carrier 10. A biplate assembly 20 includes electrodes 27, 28 each having a non-metal carrier 10. A method is disclosed for manufacturing an electrode 13 having a non-metal carrier 10. An apparatus 30 is disclosed for manufacturing such an electrode 13. A bipolar battery includes at least one such an electrode 13. The non-metal carrier 10 is preferably a non-conductive carrier.Type: GrantFiled: July 29, 2016Date of Patent: January 17, 2017Assignee: Nilar International ABInventors: Lars Fredriksson, Neil H. Puester
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Publication number: 20160336589Abstract: An electrode for a biplate assembly includes an active material made from a compressed powder 11, and a non-metal carrier 10. A biplate assembly 20 includes electrodes 27, 28 each having a non-metal carrier 10. A method is disclosed for manufacturing an electrode 13 having a non-metal carrier 10. An apparatus 30 is disclosed for manufacturing such an electrode 13. A bipolar battery includes at least one such an electrode 13. The non-metal carrier 10 is preferably a non-conductive carrier.Type: ApplicationFiled: July 29, 2016Publication date: November 17, 2016Applicant: Nilar International ABInventors: Lars FREDRIKSSON, Neil H. PUESTER
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Patent number: 9431676Abstract: An electrode for a biplate assembly includes an active material made from a compressed powder 11, and a non-metal carrier 10. A biplate assembly 20 includes electrodes 27, 28 each having a non-metal carrier 10. A method is disclosed for manufacturing an electrode 13 having a non-metal carrier 10. An apparatus 30 is disclosed for manufacturing such an electrode 13. A bipolar battery includes at least one such an electrode 13. The non-metal carrier 10 is preferably a non-conductive carrier.Type: GrantFiled: April 27, 2009Date of Patent: August 30, 2016Assignee: Nilar International ABInventors: Lars Fredriksson, Neil H. Puester
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Publication number: 20140139030Abstract: The present invention relates to an energy management system comprising an energy storage, a control system and a power converter supplying power to a load. The energy storage is arranged in individual energy units and the power converter is provided with a switching system for controlling the voltage over the load. The switching system comprises multiple parallel-connected power switches and at least one of the power switches is connected to each energy unit. The control system comprises individual control units, each being configured to monitor the status of a dedicated energy unit and produce an individual enable signal indicative of the status. Each power switch is configured to be controlled by the individual enable signal and a first control signal, wherein the control system is configured to connect multiple energy units in parallel to the load.Type: ApplicationFiled: June 28, 2012Publication date: May 22, 2014Applicant: NILAR INTERNATIONAL ABInventor: Richard Howlett
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Patent number: 8470469Abstract: A gasket is for use in a starved electrolyte bipolar battery. The gasket may be made from a hydrophobic material in the shape of a frame to prevent the creation of an electrolyte path between adjacent cells when mounted in a battery. The frame may be designed to at least partially encompass a biplate when mounted in a bipolar battery, and include a device or way to permit gas passage through the gasket. The gasket may be made from a material with deformable properties to provide a sealing to a biplate and/or endplate when mounted in a bipolar battery, whereby an outer pressure tight seal of the battery may be obtained. A starved bipolar battery and a method for manufacturing a starved bipolar battery are also disclosed.Type: GrantFiled: September 3, 2008Date of Patent: June 25, 2013Assignee: Nilar International ABInventors: Neil H. Puester, David Hock, Lars Fredriksson
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Patent number: 8460819Abstract: The present invention relates to a battery stack arrangement (50) comprising at least one bipolar battery. Each bipolar battery comprises a plurality of battery cell arranged between endplates (22,23). Each battery cell is provided with a seal (24) arranged around the entire periphery of each cell, and a sealing pressure Fseal is applied over the seal to prevent electrolyte leakage between adjacent cells. The battery stack arrangement further comprises a mounting frame (57) including: at least two mounting units (58,59) and at least one tie unit (60, 60?, 60?) holding said mounting units together. The bipolar battery is arranged between the mounting units (58,59), and the battery stack arrangement further comprises at least one spacing element (61) arranged between the mounting units (58,59) and each spacing element (61) abuts against at least one endplate (22,23) and is held in place by said mounting frame (57) to create a stack pressure Fstack, independent of the sealing pressure Fseal.Type: GrantFiled: January 15, 2007Date of Patent: June 11, 2013Assignee: Nilar International ABInventors: Lars Fredriksson, Neil H. Puester, Richard Howlett
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Patent number: 8460402Abstract: A gasket for a bipolar battery comprises a structural part in the shape of a frame having an upper surface and a lower surface, and at least one channel to permit gas passage through the gasket. The structural part may be made from a first material having hydrophobic properties. The gasket further comprises at least a first sealing surface arranged in a closed loop projecting from the upper surface, and at least a second sealing surface arranged in a closed loop projecting from the lower surface. The first and the second sealing surfaces are provided on at least one sealing part, are made from a second material, and the first material of the structural part has a higher elastic modulus than an elastic modulus of the second material of the sealing parts. A bipolar battery and a method for manufacturing a gasket are also disclosed.Type: GrantFiled: January 25, 2012Date of Patent: June 11, 2013Assignee: Nilar International ABInventors: David Hock, Lars Fredriksson, Neil H. Puester
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Publication number: 20120131793Abstract: A gasket for a bipolar battery comprises a structural part in the shape of a frame having an upper surface and a lower surface, and at least one channel to permit gas passage through the gasket. The structural part may be made from a first material having hydrophobic properties. The gasket further comprises at least a first sealing surface arranged in a closed loop projecting from the upper surface, and at least a second sealing surface arranged in a closed loop projecting from the lower surface. The first and the second sealing surfaces are provided on at least one sealing part, are made from a second material, and the first material of the structural part has a higher elastic modulus than an elastic modulus of the second material of the sealing parts. A bipolar battery and a method for manufacturing a gasket are also disclosed.Type: ApplicationFiled: January 25, 2012Publication date: May 31, 2012Applicant: NILAR INTERNATIONAL ABInventors: David HOCK, Lars FREDRIKSSON, Neil H. PUESTER
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Patent number: 8124268Abstract: A gasket 20; 40; 80 for use in a starved electrolyte bipolar battery comprises a structural part 27; 44; 82 in the shape of a frame having an upper surface 1 and a lower surface 2, and at least one channel 23, 24; 83, 84 to permit gas passage through the gasket. The structural part is made from a first material having hydrophobic properties. The gasket 20; 40; 80 further comprises at least a first sealing surface 30; 47; 91 arranged in a closed loop projecting from the upper surface 1, and at least a second sealing surface 30; 47; 92 arranged in a closed loop projecting from the lower surface 2. The first and the second sealing surfaces are provided on at least one sealing part 26; 41, 41; 81, are made from a second material, and the first material of the structural part 27; 44; 82 has a higher elastic modulus than an elastic modulus of the second material of the sealing parts 26; 41, 42; 81. A starved electrolyte bipolar battery and a method for manufacturing a gasket are also disclosed.Type: GrantFiled: August 9, 2007Date of Patent: February 28, 2012Assignee: Nilar International ABInventors: David Hock, Lars Fredriksson, Neil H. Puester
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Patent number: D758960Type: GrantFiled: August 5, 2013Date of Patent: June 14, 2016Assignee: Nilar International ABInventors: Andreas Johansson, Niclas Uggla