Patents Assigned to EC Power LLC
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Patent number: 11367910Abstract: A rapid heating-charging process for charging a rechargeable battery is disclosed. Such a process can be implemented by an integrated heating and battery system can include a rechargeable battery and a heating element in thermal contact with the at least one cell of the battery and electrically connected in series to a switch wherein the heating element and switch form a switch-heater assembly. The switch-heater assembly can be electrically connected in parallel with the battery to form a battery-switch-heater circuit. Advantageously, the battery-switch-heater circuit is configured to be directly electrically engaged with a charger so that the heating element is powered mainly by the charger and electrically connected to the battery when the heating element is powered by the charger.Type: GrantFiled: March 18, 2019Date of Patent: June 21, 2022Assignee: EC POWER, LLCInventor: Chao-Yang Wang
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Patent number: 10587021Abstract: Provided is an all solid-state lithium battery including solid battery materials and whose ohmic resistance is modulated according to temperature. The all solid-state lithium battery can include a solid electrolyte; at least two terminals for operating the battery at one level of internal resistance (R1) over a temperature range of the battery between a first temperature (T1) and a second temperature (T2); at least one high resistance terminal for operating the battery at a second level of internal resistance (R2) outside of either T1 or T2; and a switch that activates R2 when the temperature of the battery is outside of either T1 or T2. The battery can be configured to include at least one resistor sheet embedded within a cell of the battery and electrically connected to the at least one high resistance terminal.Type: GrantFiled: November 25, 2015Date of Patent: March 10, 2020Assignee: EC POWER, LLCInventors: Chao-Yang Wang, Yan Ji, Tianren Xu
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Patent number: 10186887Abstract: Rechargeable batteries, charging methods and systems for fast charging of the battery under all environmental temperatures and without causing battery degradation are disclosed. A charging control system for charging a rechargeable battery can include an ohmically modulated battery, a temperature sensor configured to monitor a temperature of the battery: a switch that can electrically engage the battery to a source of electrical current through either a low-resistance terminal or a high-resistance terminal of the battery: and a controller electrically connected to the temperature sensor and the switch and that can receive input from the temperature sensor and is programmed to determine whether to electrically engage the battery to the source of electrical current through either the low-resistance terminal or the high-resistance terminal through the switch based on input from the temperature sensor.Type: GrantFiled: July 27, 2015Date of Patent: January 22, 2019Assignee: EC Power, LLCInventors: Chao-Yang Wang, Yan Ji
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Patent number: 10074861Abstract: Fuel cell systems, e.g. systems including proton exchange membrane (PEM) fuel cells, are engineered to have more than one internal electrical resistance that can change according to temperature. Such changes in internal electrical resistance levels allow rapid heat-up of the fuel cells from low temperatures to an elevated temperature that is optimal for water management and fuel cell operation. The fuel cell systems can include at least one fuel cell and at least one resistor-switch unit electrically connected to the at least one fuel cell. The at least one resistor-switch unit includes a resistor and a switch in which the switch is electrically connected in parallel with the resistor.Type: GrantFiled: January 21, 2016Date of Patent: September 11, 2018Assignee: EC Power, LLCInventor: Chao-Yang Wang
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Patent number: 10033071Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.Type: GrantFiled: October 8, 2014Date of Patent: July 24, 2018Assignee: EC Power, LLCInventors: Chao-Yang Wang, Shanhai Ge, Yan Ji, Tianren Xu
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Patent number: 9882197Abstract: A rechargeable battery, module or a pack, having different levels of internal resistance that operate at different temperatures are disclosed. In a subfreezing environment, the battery can exhibit high resistance which once operated or activated, generates heat internally to warm up the battery quickly. Once the batter reaches normal operating temperatures, the battery can switch to a low resistance operating mode, thereby delivering superior power and energy despite operating in a very low ambient temperature.Type: GrantFiled: April 17, 2014Date of Patent: January 30, 2018Assignee: EC POWER, LLCInventors: Chao-Yang Wang, Shanhai Ge
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Patent number: 9692087Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.Type: GrantFiled: October 7, 2016Date of Patent: June 27, 2017Assignee: EC Power, LLCInventors: Chao-Yang Wang, Shanhai Ge
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Patent number: 9627723Abstract: Electrochemical cells that include resistor switch assemblies that can operate according to temperature and batteries and power systems including such cells are disclosed.Type: GrantFiled: July 30, 2014Date of Patent: April 18, 2017Assignee: EC Power, LLCInventors: Chao-Yang Wang, Puneet K. Sinha, Yan Ji, Shanhai Ge
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Patent number: 9502708Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.Type: GrantFiled: May 1, 2014Date of Patent: November 22, 2016Assignee: EC Power, LLCInventors: Chao-Yang Wang, Shanhai GE
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Patent number: 9478829Abstract: A rechargeable battery that features two or more levels of internal resistance according to various temperature ranges is disclosed.Type: GrantFiled: February 25, 2014Date of Patent: October 25, 2016Assignee: EC Power, LLCInventors: Chao-Yang Wang, Wei Zhao
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Publication number: 20160268646Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.Type: ApplicationFiled: October 8, 2014Publication date: September 15, 2016Applicant: EC Power, LLCInventors: Chao-Yang WANG, Shanhai GE, Yan JI, Tianren XU
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Patent number: 9287593Abstract: A battery with three types of terminals is disclosed. The terminals include at least one negative terminal, at least one positive terminal, and at least one sensor terminal. The negative and positive terminals carry current during battery operation, while the sensor terminal is used to sense, communicate and/or control certain aspects of the battery. The sensor terminal can also be connected to external electronic units for sensing, communication and control of the battery usage.Type: GrantFiled: February 25, 2014Date of Patent: March 15, 2016Assignee: EC POWER, LLCInventors: Chao-Yang Wang, Christian E. Shaffer, Puneet K. Sinha
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Publication number: 20150303444Abstract: A rechargeable battery, module or a pack, having different levels of internal resistance that operate at different temperatures are disclosed. In a subfreezing environment, the battery can exhibit high resistance which once operated or activated, generates heat internally to warm up the battery quickly. Once the batter reaches normal operating temperatures, the battery can switch to a low resistance operating mode, thereby delivering superior power and energy despite operating in a very low ambient temperature.Type: ApplicationFiled: April 17, 2014Publication date: October 22, 2015Applicant: EC POWER LLCInventors: Chao-Yang WANG, Shanhai GE
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Publication number: 20150104681Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.Type: ApplicationFiled: May 1, 2014Publication date: April 16, 2015Applicant: EC POWER, LLCInventors: Chao-Yang WANG, Shanhai GE
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Publication number: 20140342194Abstract: A rechargeable battery that features two or more levels of internal resistance according to various temperature ranges is disclosed.Type: ApplicationFiled: February 25, 2014Publication date: November 20, 2014Applicant: EC Power, LLCInventors: Chao-Yang WANG, Wei ZHAO
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Publication number: 20140295222Abstract: A battery with three types of terminals is disclosed. The terminals include at least one negative terminal, at least one positive terminal, and at least one sensor terminal. The negative and positive terminals carry current during battery operation, while the sensor terminal is used to sense, communicate and/or control certain aspects of the battery. The sensor terminal can also be connected to external electronic units for sensing, communication and control of the battery usage.Type: ApplicationFiled: February 25, 2014Publication date: October 2, 2014Applicant: EC POWER, LLCInventors: Chao-Yang WANG, Christian E. SHAFFER, Puneet K. SINHA
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Publication number: 20140285135Abstract: A battery system is disclosed that can internally heat a battery by consuming minimal battery energy and with short heating times.Type: ApplicationFiled: February 25, 2014Publication date: September 25, 2014Applicant: EC POWER, LLCInventors: Yan JI, Chao-Yang WANG, Christian E. SHAFFER, Puneet K. SINHA
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Patent number: 8334675Abstract: A controller in a charging control system controls a charger to heat a battery at a low temperature by pulse charging and discharging up to a desired temperature and then moves to a normal charging mode. The controller calculates an ion concentration of an active material at electrode portions of the battery on the basis of the temperature data and the electric current data obtained, switch the pulse charging and discharging between a charging mode and a discharging mode on the basis of a pulse width when the ion concentration reaches a threshold.Type: GrantFiled: July 28, 2010Date of Patent: December 18, 2012Assignees: Honda Motor Co., Ltd., EC Power LLCInventors: Chao-Yang Wang, Ou Jung Kwon, Yosuke Ishikawa