Abstract: Methods and systems are provided for a refrigerant-based battery cooling plate. In one example, the cooling plate may be configured with a plurality of fluid channels configured with non-uniform diameters. The cooling plate may further include a plurality of mixing conduits extending between fluid channels.

Abstract: A heat exchanger includes a fluid flow passage with a wavy fin turbulizer. The turbulizer includes sidewalls extending lengthwise along a fluid flow direction between its first and second ends, and the sidewalls are spaced apart across the width of the turbulizer. Each flow channel of the turbulizer is defined between two adjacent sidewalls. Each sidewall has a smoothly and continuously curved profile with repeating wave forms being defined along the length of the turbulizer. The continuously curved profile of the sidewalls is defined by a non-circular shape, such as elliptical, sinusoidal, parabolic and hyperbolic shapes. The radius of curvature changes constantly and reaches a maximum at or near the inflection point between adjacent crests and troughs of the profile, to provide improved particle pass-through, lower pressure drop, and enhanced plateability of internal surfaces.

Abstract: A battery cell heat exchanger having a pair of plates that together define a fluid passage having a first channel permitting fluid flow from a first end of the plate pair towards a second end of the plate pair, and a second channel permitting fluid flow from the second end towards the first end of the plate pair. The plate pair together defining a first conduit at the first end of the plate pair, the first conduit being in fluid communication with the first channel. One of the pair of plates having an aperture permitting fluid flow from the second channel to a duct, the duct coupled to the one of the pair of plates having the aperture and having a second conduit in fluid communication with the aperture; where the first conduit and the second conduit lie in the plane defined by the pair of plates.

Abstract: A heat exchanger and battery unit structure is provided for cooling battery units (or cells) where the thermally conductive nature of the battery forms a cooling path. The heat exchanger is in the form of a cooling element provided with an engaging device formed on or attached to an outer surface of the cooling plate for receiving a battery unit (or cell). The interconnection between the battery unit (or cell) and heat exchanger creates a mechanical interlock between the two components that results in improved heat transfer properties between the two components.

Abstract: A heat exchanger capable of conforming to expansion/contraction due to external stresses as well as adjusting/adapting to surface imperfections at the interface of the heat exchanger with additional components is disclosed. The heat exchanger is made up of various heat exchanger elements where the elements are interconnected in such a manner that they can shift relative to one another along and/or about different axes while maintaining fluid flow through the heat exchanger. Each element has a fluid inlet, fluid outlet and a flow passage extending therebetween, the elements being arranged such that the outlet of one element is fluidly connected to the inlet of the adjacent element. The individual elements are also physically interconnected to allow for longitudinal and/or lateral shifting in response to external expansion/contraction forces while maintaining fluid flow through the entire heat exchanger, as well as to tilting about each of these axes.

Abstract: A counterflow heat exchanger for battery thermal management has a base plate, a cover plate and manifold cover. The base plate includes alternating first and second longitudinal fluid flow passages. The cover plate is sealed to the base plate to enclose the first and second fluid flow passages, and includes a first fluid opening and a plurality of second fluid openings arranged at spaced apart intervals across a width of the cover plate. The manifold cover includes an embossment surrounded by a peripheral flange which is sealed to the cover plate and surrounds at least the plurality of second fluid openings. The interior of the embossment defines a manifold chamber in flow communication with the second fluid openings in the cover plate. The top of the manifold cover has at least a second fluid opening in flow communication with the plurality of second fluid openings through the manifold chamber.

Abstract: Disclosed is a heat exchanger having heat exchange plates and a base plate that can help to mitigate the thermal stresses encountered by a heat exchanger, particularly, around the peripheral edge portions of the heat exchanger and the base of heat exchanger. This is achieved by providing a channel of coolant fluid near the peripheral edge portions which is in between the peripheral edge portions and the manifold permitting flow of hot fluid. In addition, the base plate of the heat exchanger is protected from the hot fluid flowing through the manifold by providing deflectors that shield the base plate from the hot fluid.

Abstract: A heat exchanger capable of conforming to expansion/contraction due to external stresses as well as adjusting/adapting to surface imperfections at the interface of the heat exchanger with additional components is disclosed. The heat exchanger is made up of various heat exchanger elements where the elements are interconnected in such a manner that they can shift relative to one another along and/or about different axes while maintaining fluid flow through the heat exchanger. Each element has a fluid inlet, fluid outlet and a flow passage extending therebetween, the elements being arranged such that the outlet of one element is fluidly connected to the inlet of the adjacent element. The individual elements are also physically interconnected to allow for longitudinal and/or lateral shifting in response to external expansion/contraction forces while maintaining fluid flow through the entire heat exchanger, as well as to tilting about each of these axes.

Abstract: A battery cell heat exchanger having a pair of plates that together define a fluid passage having a first channel permitting fluid flow from a first end of the plate pair towards a second end of the plate pair, and a second channel permitting fluid flow from the second end towards the first end of the plate pair. The plate pair together defining a first conduit at the first end of the plate pair, the first conduit being in fluid communication with the first channel. One of the pair of plates having an aperture permitting fluid flow from the second channel to a duct, the duct coupled to the one of the pair of plates having the aperture and having a second conduit in fluid communication with the aperture; where the first conduit and the second conduit lie in the plane defined by the pair of plates.

Abstract: A counterflow heat exchanger for battery thermal management has a base plate, cover plate and manifold cover. The base plate includes alternating first and second longitudinal fluid flow passages. The cover plate is sealed to the base plate to enclose the first and second fluid flow passages, and includes a first fluid opening and a plurality of second fluid openings arranged at spaced apart intervals across a width of the cover plate. The manifold cover comprises an embossment surrounded by a peripheral flange which is sealed to the cover plate and surrounds at least the plurality of second fluid openings. The interior of the embossment defines a manifold chamber in flow communication with the second fluid openings in the cover plate. The top of the manifold cover has at least a second fluid opening in flow communication with the plurality of second fluid openings through the manifold chamber.

Abstract: A heat recovery device such as an EGHR device includes a bypass valve, a gas/liquid heat exchanger and a flow duct. The flow duct has an open top and an open bottom. A top surface of the duct seals to a surface surrounding an opening of a gas flow conduit, such as an exhaust pipe. A duct wall extends from the top surface to the bottom surface, to which the heat exchanger is secured. The flow duct provides a passage through gas flows between the gas flow conduit and the heat exchanger. The bypass valve is mounted in the flow duct and is movable between a bypass position and a heat exchange position. The bypass valve may be mounted adjacent to the top or bottom of the duct, and may be a butterfly-type valve, a one-sided flap valve, or a pair of one-sided flap valves.

Abstract: A heat exchanger and battery unit structure is provided for cooling battery units (or cells) where the thermally conductive nature of the battery forms a cooling path. The heat exchanger is in the form of a cooling element provided with an engaging device formed on or attached to an outer surface of the cooling plate for receiving a battery unit (or cell). The interconnection between the battery unit (or cell) and heat exchanger creates a mechanical interlock between the two components that results in improved heat transfer properties between the two components.

Abstract: A heat exchanger and battery unit structure is provided for cooling battery units (or cells) where the thermally conductive nature of the battery forms a cooling path. The heat exchanger is in the form of a cooling element provided with an engaging device formed on or attached to an outer surface of the cooling plate for receiving and/or engaging with a corresponding engaging portion on a battery unit (or cell). The interconnection between the battery unit (or cell) and heat exchanger creates a mechanical interlock between the two components that results in improved heat transfer properties between the two components.

Abstract: A heat exchanger has inlet and outlet fittings, each having a base portion and a top portion, and having a circumferential groove provided with a resilient sealing element for sealing within a bore of a coolant manifold. Each fitting also has a base fitting with an annular sealing surface sealed to a surface of the heat exchanger. In an embodiment, the base portion has a larger diameter than the top portion, and the groove and sealing element are provided in the bottom portion, with a chamfer or sloped surface separating the base and top portions. In another embodiment, the top portion has a larger diameter than the base portion, and the groove and sealing element are provided in the top portion.

Abstract: A device for recovering heat from a hot gas stream comprises a gas diverter valve and a gas/liquid heat exchanger. The diverter valve comprises a valve body; a valve element movable between a bypass position and a heat exchange position; and a gas inlet and a gas outlet formed in the valve body. The heat exchanger comprises a heat exchanger core comprised of a stack of core plates arranged parallel to the exhaust gas flow path, and the heat exchanger is located outside the exhaust gas flow path and may be spaced therefrom so as to avoid unwanted heat transfer with the valve in bypass mode. The heat exchanger may include a bottom-most gas flow path adjacent to the bottom plate, and may include a mounting plate which is mechanically secured to the valve body, with a thermally insulating gasket provided between the mounting plate and the valve body.

Abstract: A heat recovery device such as an EGHR device includes a bypass valve, a gas/liquid heat exchanger and a flow duct. The flow duct has an open top and an open bottom. A top surface of the duct seals to a surface surrounding an opening of a gas flow conduit, such as an exhaust pipe. A duct wall extends from the top surface to the bottom surface, to which the heat exchanger is secured. The flow duct provides a passage through gas flows between the gas flow conduit and the heat exchanger. The bypass valve is mounted in the flow duct and is movable between a bypass position and a heat exchange position. The bypass valve may be mounted adjacent to the top or bottom of the duct, and may be a butterfly-type valve, a one-sided flap valve, or a pair of one-sided flap valves.

Abstract: Disclosed is a heat exchanger having heat exchange plates and a base plate that can help to mitigate the thermal stresses encountered by a heat exchanger, particularly, around the peripheral edge portions of the heat exchanger and the base of heat exchanger. This is achieved by providing a channel of coolant fluid near the peripheral edge portions which is in between the peripheral edge portions and the manifold permitting flow of hot fluid. In addition, the base plate of the heat exchanger is protected from the hot fluid flowing through the manifold by providing deflectors that shield the base plate from the hot fluid.

Abstract: A heat exchanger has inlet and outlet fittings, each having a base portion and a top portion, and having a circumferential groove provided with a resilient sealing element for sealing within a bore of a coolant manifold. Each fitting also has a base fitting with an annular sealing surface sealed to a surface of the heat exchanger. In an embodiment, the base portion has a larger diameter than the top portion, and the groove and sealing element are provided in the bottom portion, with a chamfer or sloped surface separating the base and top portions. In another embodiment, the top portion has a larger diameter than the base portion, and the groove and sealing element are provided in the top portion.

Abstract: An annular heat exchanger for cooling hot gases comprises an inner shell, an intermediate shell and an outer shell. Where the heat exchanger is integrated with a catalytic converter for treatment of hot exhaust gases in a motor vehicle, the inner shell contains a catalyst for treatment of the exhaust gases. Inner and outer gas flow passages are provided between the shells, and a coolant flow passage is provided, either on the outer surface of the outer shell, or between the intermediate and outer shells. The exhaust gases change direction twice as they pass through the heat exchanger, and the annular structure of the heat exchanger provides a large surface area, and a large flow section, relative to volume, and thereby provides effective heat exchange without significantly increasing space requirements.

Abstract: A cylindrical heat exchanger for use as a gas cooler in a thermal regenerative machine such as a Stirling engine includes an imperforate middle wall of sufficient strength and thickness to withstand the pressure exerted by the working fluid. The heat exchanger includes an inner corrugated wall located within an axial gas flow passage inside the middle wall, and an outer corrugated wall which defines an axial coolant flow passage along the outer surface of the middle wall. The coolant flow passage preferably contains a corrugated intermediate wall.