Abstract: A power source comprised of a metal-air battery pack and a non-metal-air battery pack is provided, wherein thermal energy from the metal-air battery pack is used to heat the non-metal-air battery pack. In one aspect, a thermal energy transfer system is provided that controls the flow of thermal energy from the metal-air battery pack to the non-metal-air battery pack. In another aspect, the flow of thermal energy from the metal-air battery pack to the non-metal-air battery pack is controlled and used to heat the non-metal-air battery pack prior to charging the non-metal-air battery pack.
Abstract: A power source comprised of a first battery pack (e.g., a non-metal-air battery pack) and a second battery pack (e.g., a metal-air battery pack) is provided, wherein the second battery pack is only used as required by the state-of-charge (SOC) of the first battery pack or as a result of the user selecting an extended range mode of operation. Minimizing use of the second battery pack prevents it from undergoing unnecessary, and potentially lifetime limiting, charge cycles. The second battery pack may be used to charge the first battery pack or used in combination with the first battery pack to supply operational power to the electric vehicle.
Type:
Grant
Filed:
December 8, 2010
Date of Patent:
May 28, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Sarah G. Stewart, Scott Ira Kohn, Kurt Russell Kelty, Jeffrey Brian Straubel
Abstract: A method of charging a rechargeable battery pack installed in an electric vehicle is provided in which the charging system includes a switching circuit that is operable in at least a first mode and a second mode. In the first mode the switching circuit couples the power supply and an external power source to both a heater and the charging circuit, the heater providing a voltage divider circuit within the charging circuit. In the second mode the switching circuit couples the power supply and the external power source only to the charging circuit, bypassing the heater.
Type:
Grant
Filed:
July 13, 2011
Date of Patent:
May 28, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Jean-Pierre Krauer, Jeffrey Brian Straubel, Troy Adam Nergaard, Ian Craven, Arthur Joseph Hebert
Abstract: A front structure for a vehicle is provided, the structure including a single piece shock tower and an upper control arm, where the front coupling of the upper control arm is attached to the shock tower at a location directly above a corresponding surface of the shock tower such that the front coupling is exposed from above, and where the rear coupling of the upper control arm is attached to the shock tower at a location directly below a corresponding surface of the shock tower such that the rear coupling is unexposed from above.
Type:
Grant
Filed:
January 5, 2012
Date of Patent:
May 28, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Peter Dore Rawlinson, Hitendra Laxmidas Gadhiya, Alexi Charbonneau
Abstract: A coolant de-aeration system is provided that includes a coolant reservoir, a plurality of de-aeration chambers within the reservoir, a plurality of de-aeration chamber apertures that direct coolant flow through the de-aeration chambers, a reservoir inlet and a reservoir outlet that share a common coolant flow pathway that allows the majority of coolant to flow directly between the reservoir inlet and the reservoir outlet, and a reservoir inlet aperture that directs a portion of coolant passing along the common coolant flow pathway through the reservoir's de-aeration chambers for de-aeration prior to being returned to the common coolant flow pathway.
Type:
Grant
Filed:
March 23, 2012
Date of Patent:
May 28, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Vincent George Johnston, Curt Raymond O'Donnell
Abstract: A system and method for mitigating the effects of a thermal event within a battery pack is provided in which the hot gas and material generated during the thermal runaway of at least one non-metal-air cell of a plurality of non-metal-air cells is directed through one or more metal-air cells, the metal-air cells absorbing at least a portion of the thermal energy generated during the event before it is released to the ambient environment. As a result, the risks to vehicle passengers, bystanders, first responders and property are limited.
Abstract: An apparatus includes an inverter including a high-side switch coupled to a low-side switch, the inverter generating a time-varying drive current from a plurality of drive control signals, a positive rail voltage, and a negative rail voltage wherein controlling the switches to generate the time-varying drive current produces a potential transitory overshoot condition for one of the switches of the inverter; a drive control, coupled to the inverter, to generate the drive control signals and to set a level of each of the rail voltages responsive to a plurality of controller signals; and a controller monitoring one or more parameters indicative of the potential transitory voltage overshoot condition, the controller dynamically adjusting, responsive to the monitored parameters, the controller signals to reduce a risk of occurrence of the potential transitory voltage overshoot condition.
Type:
Grant
Filed:
January 31, 2011
Date of Patent:
May 14, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Ryan Kroeze, Colin Campbell, Nicholas Robert Kalayjian
Abstract: A control system for use with a vehicle's dual hinged door assembly is provided, the control system including a door switch, upper and lower door portions, primary and secondary door drive systems and a controller. The upper door portion pivots about a primary axis formed by its juncture with a structural member in the roof while the lower door portion pivots about a secondary axis formed by its juncture with the upper door portion. Primary and secondary drive systems provide independent powered motion of the upper and lower door portions. The controller monitors door switch activation and determines whether activation corresponds to a door open or door closed command; performs preset door opening and closing sequences using the drive systems; and modifies the preset door opening and closing sequences based on data from proximity sensors, pinch sensors, latch sensors, drive system motor speed and the current draw by the drive systems.
Type:
Application
Filed:
September 14, 2012
Publication date:
April 25, 2013
Applicant:
TESLA MOTORS, INC.
Inventors:
Matthew Lee Brown, Franz von Holzhausen, Peter Dore Rawlinson, Nicholas John Sampson, Michael James Eckert, David Lemire, Axel Boris Vollmer
Abstract: A dual hinged door assembly for a vehicle is provided, the assembly including an upper door portion and a lower door portion. The upper door portion, which may include a window, pivots about a primary axis formed by its juncture with a structural member in the roof. The lower door portion, which may include a window, pivots about a secondary axis formed by its juncture with the upper door portion. Primary and secondary drive systems may be used to provide independent powered motion of the upper and lower door portions. Each drive system may include a powered strut, e.g., a hydraulic strut, and a non-powered strut, e.g., a gas strut.
Type:
Application
Filed:
September 14, 2012
Publication date:
April 25, 2013
Applicant:
TESLA MOTORS, INC.
Inventors:
Matthew Lee Brown, Franz von Holzhausen, Peter Dore Rawlinson, Nicholas John Sampson, Michael James Eckert, David Lemire, Axel Boris Vollmer
Abstract: A method of controlling the operation of a vehicle's dual hinged door assembly is provided, where the dual hinged door assembly includes a first door portion hingeably coupled to a structural member within the vehicle's roof such that it pivots about a primary axis formed by its juncture with the structural roof member, a second door portion hingeably coupled to the first door portion such that it pivots about a secondary axis formed by its juncture with the first door portion, a primary drive system providing powered motion for the first door portion about the primary axis, a secondary drive system providing powered motion for the second door portion about the secondary axis, and a controller coupled to the drive systems that provides independent motion control of the first and second door portions via the primary and secondary drive systems.
Type:
Application
Filed:
September 14, 2012
Publication date:
April 25, 2013
Applicant:
TESLA MOTORS, INC.
Inventors:
Matthew Lee Brown, Franz von Holzhausen, Peter Dore Rawlinson, Nicholas John Sampson, Michael James Eckert, David Lemire, Axel Boris Vollmer
Abstract: A front structure for a vehicle is provided that includes a pair of front rails (i.e., front left hand rail and front right hand rail) spaced apart in a widthwise direction with each rail extending lengthwise and mechanically coupled to the vehicle's bumper and a torque box. Each front rail is comprised of a polygonal-shaped upper hollow channel and a polygonal-shaped lower hollow channel, where the upper and lower channels share a common wall.
Type:
Grant
Filed:
December 24, 2011
Date of Patent:
April 23, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Peter Dore Rawlinson, Hitendra Laxmidas Gadhiya
Abstract: A dual mode battery charging system and method of use are provided for use in an electric vehicle. The system utilizes at least two user selectable, charging operational modes. In a first operational mode, a state of charge circuit powers on the engine/generator system whenever the battery state of charge falls below a first level and until the battery state of charge reaches a second level, where the second level is higher than the first level. In a second operational mode, the state of charge circuit powers on the engine/generator system whenever the battery state of charge falls below a third level and until the battery state of charge reaches a fourth level, where the fourth level is higher than the third level, and where both the third and fourth levels are lower than both the first and second levels.
Type:
Grant
Filed:
November 13, 2012
Date of Patent:
April 23, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Kurt Russell Kelty, Scott Ira Kohn, Weston Arthur Hermann, Jeffrey Brian Straubel
Abstract: A system and method for charging a metal-air battery pack at the maximum possible rate while maintaining an ambient oxygen concentration below a preset concentration is provided, thereby minimizing the risks associated with generating oxygen during the charging cycle.
Type:
Grant
Filed:
September 22, 2010
Date of Patent:
April 16, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Weston Arthur Hermann, Jeffrey Brian Straubel, David G. Beck
Abstract: A test apparatus and corresponding method for simulating an internal cell short and initiating thermal runaway in a battery cell is disclosed whereby the cell is internally heated through rapid charge and discharge cycles at high currents. The magnitude of the selected current may be modulated to simulate a cell short with the desired power profile without unrealistically heating neighboring cells or interfering with the thermal environment of the cell within the module.
Type:
Grant
Filed:
October 22, 2010
Date of Patent:
April 16, 2013
Assignee:
Tesla Motors, Inc.
Inventors:
Weston Arthur Hermann, Nicholas Paul Manov, Paul Karplus, Alex Prilutsky
Abstract: An energy absorbing and distributing side impact system for use with a vehicle is provided, the system utilizing a collapsible side sill along with multiple vehicle cross-members to achieve the desired level of vehicle side impact resistance, the combination of these elements absorbing and distributing the impact load throughout the vehicle structure. A battery pack enclosure that includes a plurality of cross-members that transverse the battery pack enclosure also help to absorb and distribute at least a portion of the load received when either the first or second side of the vehicle receives a side impact. In this configuration the battery pack enclosure is positioned between the front and rear vehicle suspension assemblies and mounted between, and mechanically coupled to, the side sill assemblies. In addition to providing rigidity, strength and impact resistance, the battery pack cross-members segregate the batteries contained within the battery pack enclosure into battery groups.
Abstract: Continuous cross sectional profile guide tracks in an outer sliding sunroof/moonroof are provided where both the front and rear mechanism or mechanism links travel fore/aft in the same channels as each other and have fore/aft travel that is limited only by vehicle architecture. The guide track channel is partly or entirely outside/outboard of the primary water/wind sealing system of the sunroof.
Abstract: An energy absorbing and distributing side impact system for use with a vehicle is provided, the system utilizing a collapsible side sill assembly along with multiple vehicle cross-members to achieve the desired level of vehicle side impact resistance, the combination of these elements absorbing and distributing the impact load throughout the vehicle structure. The collapsible side sill assembly includes a side sill insert, the insert divided into a collapsible portion designed to absorb impact energy and a reacting portion designed to distribute the impact energy to the vehicle cross-members.
Abstract: Continuous cross sectional profile guide tracks in an outer sliding sunroof/moonroof are provided where both the front and rear mechanism or mechanism links travel fore/aft in the same channels as each other and have fore/aft travel that is limited only by vehicle architecture. The guide track channel is partly or entirely outside/outboard of the primary water/wind sealing system of the sunroof.
Abstract: Continuous cross sectional profile guide tracks in an outer sliding sunroof/moonroof are provided where both the front and rear mechanism or mechanism links travel fore/aft in the same channels as each other and have fore/aft travel that is limited only by vehicle architecture. The guide track channel is partly or entirely outside/outboard of the primary water/wind sealing system of the sunroof.