Abstract: Described herein is an airflow management system and method. The system includes a top layer and a bottom layer, and each of the layers has a dedicated air flow management and hardware system that are operated independently. The top layer is a drop ceiling air plenum, and can store fan coils arranged in a hot aisle containment fashion or a cold hair containment fashion. The top layer receives fresh air from its own air source, and exhausts hot air through its own exhaust. The bottom layer can include server racks arranged in a hot aisle containment fashion or a cold aisle containment fashion. One or more servers in the bottom layer can include an air cooling component and a liquid cooling component, and receive cooling liquid from the top layer and receives cooling air from its own air source.

Abstract: An electronic rack liquid cooling system includes a rack manifold having a rack liquid supply line or channel and a rack liquid return line or channel. The liquid supply line is to receive first cooling liquid from a cooling liquid source and the liquid return line is to return first warmer liquid carrying the exchanged heat back to the cooling liquid source. The electronic rack further includes an array of server blades arranged in a stack therein. Each server blade includes one or more liquid cold plates associated with one or more information technology (IT) components. The electronic rack further includes a set of one or more liquid distribution units (LDUs) coupled between the rack liquid supply and return lines and the server blades. Each LDU includes a liquid supply port, a liquid return port, one or more pairs of supply sub-ports and return sub-ports, and a plate heat exchanger.

Abstract: According to one embodiment, a battery module includes a battery cell chamber that includes a set of battery cells configured to provide battery energy to a load and are configured to draw power from an external power supply to charge the battery cells. While the set of battery cells provide the battery energy or draw power, the cells generate heat. The module also includes an air supply chamber that is configured to supply air into the battery cell chamber, where the supplied air flows through the battery cell chamber and absorbs the heat generated by the battery cells to cool the battery cells. Thus, the airflow is supplied to the air supply chamber and being distributed evenly to the cells, and may exist the module through an air exhaust chamber after extracting the heat from the cells. Fans may be used for pushing/pulling airflow through the module.

Abstract: Thermal management of a backup battery unit for datacenter applications is described. In one embodiment a method includes sending first control signals to a pump and a fan to set default speeds. The method includes collecting a battery discharge current from the battery and an ambient air temperature of the environment proximal to the battery. The method includes calculating an optimal control function based on the battery discharge current and the ambient air temperature. The method also includes determining an adjusted pump speed and an adjusted fan speed based on the optimal control function. The method includes sending the adjusted pump speed to the pump and the adjusted fan speed to the fan. A solution for optimizing the cooling power use of the fan and the pump is proposed and at the same time maintaining thermal conditions of the battery cells under dynamic and static conditions are disclosed.

Abstract: Shelf designs for battery modules are disclosed. A liquid cooling method for battery thermal management is also introduced using the shelf design. A backup battery system shelf comprises a cooling frame and a thermal conductive pad disposed on one or more surfaces of the shelf. The cooling frame can house a backup battery unit (BBU) or module. The cooling frame is configured to circulate a cooling liquid in and out of the cooling frame. The thermal conductive pad is configured to transfer heat from a BBU module to the cooling frame and liquid circulating within the cooling frame. The BBU module can also include a cooling frame circulating a cooling liquid to transfer heat away from the BBU module.

Abstract: A modular cooling system for data center. An airflow section forms a duct for air flow and a plurality of core units are serially attached to each other and to the airflow section. A blower unit is attached to each of the core units. A plurality of motorized dampers are provided: between each of the core units and the airflow unit, in between each two core units, and between each core unit and its corresponding blower unit. A plurality of fluid ports are attached to each of the core units. At least one of the core units is loaded with one or more equipment selected from: air filter, humidifier, dehumidifier, heat exchanger, evaporator, condenser, chiller, computer room air conditioner (CRAC), dry cooler, a cooling tower or other types of cooling equipment. A combination operation of the components on the compartment and the cooling units enables fast deployment and operation.

Abstract: A modularized architecture for designing and implementing air side economization system is introduced. An airside economizer system operable in plurality of modes according to outside air temperature and quality. The system can be configured as a mixing module, an evaporative cooling module, and air supply module, attached to each other and having air passages there-between. The operational modes include a direct mode wherein the heat exchanger is deactivated and the plurality of blowers and plurality of louvers are activated to deliver ambient air to the load; an indirect mode wherein the heat exchanger is activated and the plurality of blowers and plurality of louvers are activated to deliver ambient air to the heat exchanger; and a mixing mode, wherein the heat exchanger is deactivated and the plurality of blowers and plurality of louvers are activated to mix ambient air with recirculated air.

Abstract: A self-acclimating electronics package includes an electronic chip, an electrically resistive material with a negative temperature coefficient of resistivity, the electrically resistive material being thermally coupled to the electronic chip, and a thermoelectric cooler thermally coupled to the electronic chip. The thermoelectric cooler is electrically connected in series with the electrically resistive material and a power supply to cool the electronic chip, where if a temperature of the electronic chip increases, a resistance of the electrically resistive material decreases to cause the a voltage supplied to the thermoelectric cooler to increase, and if a temperature of the electronic chip decreases, a resistance of the electrically resistive material increases to cause the a voltage/current applied to the thermoelectric cooler to decrease.

Abstract: A method of controlling a fan speed for a battery unit includes determining power discharge and a current temperature of a battery unit and obtaining a relationship between fan speed for the battery unit and temperature of the battery unit based on the power discharge and the current temperature of the battery unit. The method further includes identifying a minimum fan speed based on the relationship between fan speed and temperature and a maximum operating temperature of the battery unit and controlling the fan by setting the speed of the fan to the minimum fan speed.

Abstract: According to one embodiment, an immersion cooling system includes a coolant tank that has liquid coolant and contains at least partially submerged within the liquid coolant 1) a thermoelectric cooling (TEC) element that is coupled to an information technology (IT) component that is mounted on a piece of IT equipment, and 2) a heat sink that is coupled to the TEC element, wherein the TEC element is configured to transfer heat generated by the IT component into the liquid coolant via the heat sink.

Abstract: According to one embodiment, a hybrid cooling system includes a cold plate that is arranged to mount on an IT component that is mounted on a piece of IT equipment, the cold plate is arranged to receive coolant via a supply line and to return warmed coolant via a return line, the warmed coolant is produced by the cold plate when the cold plate is in contact with the IT component and heat generated by the IT component is transferred into the coolant by the cold plate; a TEC element that is arranged to couple to the IT component; and a heat sink that includes a base that is arranged to couple to the TEC element and one or more fins, the TEC element is configured to transfer at least a portion of the heat generated by the IT component into the one or more fins of the heat sink.

Abstract: In one embodiment, an electronic cooling device includes an inlet port to receive cooling liquid from an external cooling liquid source. The cooling device further includes a base cooling unit having a first liquid distribution channel therein. The base cooling unit includes a cooling plate that forms a lower surface to be positioned on a top surface of one or more electronic devices to extract heat from the devices through the cooling plate using at least a portion of the cooling liquid from the external cooling liquid source. The cooling device further includes an upper cooling unit having a second liquid distribution channel to extract heat from air contacting the upper cooling unit using at least a portion of the cooling liquid received from the external cooling liquid source. The cooling device further includes an outlet port to return the cooling liquid to the external cooling liquid source. Internal fluid channel structural design can be used and customized for different applications and use cases.

Abstract: According to one embodiment, a liquid distribution system includes a main liquid supply and return unit, a mounting rail that extends along at least a portion of a height of the electronic rack, and a connecting unit that is slidably coupled to the mounting rail and is coupled to the main liquid supply and return unit via a flexible supply line and a flexible return line, the connecting unit is arranged to couple to a piece of information technology (IT) equipment to circulate coolant from the main liquid supply and return unit through the piece of IT equipment to create a heat-transfer loop that transfers thermal energy away from the piece of IT equipment and into the coolant.

Abstract: Embodiments are disclosed of an information technology (IT) rack. The IT rack includes an equipment enclosure with a front, a rear, and one or more partitions, each partition adapted to receive one or more pieces of liquid-cooled information technology (IT) equipment. One or more cooling doors are positioned on the back of the equipment enclosure, each having therein a heat exchanger, the heat exchanger that is fluidly coupled to at least one of the one or more pieces of liquid-cooled IT equipment forming liquid cooling loops. Each of the one or more cooling doors is movable between a first position where the cooling door extends across the back of at least one partition so that air from the interior of the at least one partition flows through the cooling door, and a second position where air from outside the equipment enclosure flows through the cooling door. Fans are used in the middle section of rack or between two enclosures for assisting airflow management.

Abstract: According to one embodiment, a battery module includes an output connector, several battery cells that are coupled to the output connector, and several spray nozzles and spray cooling loop and system. The battery cells are configured to provide battery energy to a load via the output connector and are configured to draw power from an external power supply to charge the battery cells via the output connector. The spray nozzles are configured to spray coolant on the battery cells to transfer heat generated by the battery cells to the sprayed coolant.

Abstract: Embodiments are disclosed of a fan module. The fan module includes a module housing having a module inlet and a module outlet. A fan compartment matrix is positioned within the housing to move air between the module inlet and the module outlet. The fan compartment matrix includes an M×N matrix of fan compartments, each fan compartment having an upstream side and a downstream side. A longitudinal air channel positioned between each pair of fan columns and a transverse air channel positioned between each pair of fan rows, the transverse air channel being fluidly coupled to the fan compartments between which it is positioned. A control chamber is positioned at each confluence of the at least one longitudinal air channel and the transverse air channel, the control chamber including one or more valves to control airflow between the longitudinal air channel and the transverse air channel. A fan is positioned in each fan compartment.

Abstract: A method and system of managing power from a number of photovoltaic (PV) energy system includes measuring an output of a subset of PV energy systems, where each of the subset of PV energy systems includes a corresponding current sensor. The remaining PV energy systems do not include current sensors. The method also includes calculating the total power of all of the PV energy systems based on the measured output of the PV energy systems that include sensors. The method also includes determining a charging threshold for one or more storage systems, and determining a power threshold of IT clusters within a data center. The method also includes selectively utilizing energy from the PV energy systems to charge the storage systems or power the IT clusters. The method also includes upgrading and managing the PV system without additional sensors.

Abstract: Systems and methods for managing airflow in a backup battery unit (BBU) rack are described in the disclosure. In one embodiment, a system includes a BBU rack with a number of BBU modules, the BBU rack configured to power a server rack in a data center. The system further includes one or more crossflow fans, each crossflow fan configured to dynamically adjust its air blowing direction in real time; and a rack management controller that are connected to the server rack, the BBU rack and the one or more crossflow fans. The crossflow fan is equipped with a rotatable frame for airflow variations. The one or more crossflow fans to diffuse cooling air into one or more of the BBU modules in response to a power supply incident after receiving control signals from either a rack management controller and/or the BBU rack controller.

Abstract: Embodiments are disclosed of a multiphase converter that includes a main switch circuit, an active clamp circuit, a voltage multiplier cell, and an output capacitor. The main switch circuit includes a primary winding of a first coupled inductor; a primary winding of a second coupled inductor connected in parallel with the primary winding of the first coupled inductor and in parallel with an input voltage; a first switch connected between the primary winding of the first coupled inductor and the input voltage; and a second switch connected between the primary winding of the second coupled inductor and the input voltage. The active clamp circuit includes a third switch, a fourth switch, and a first capacitor. The voltage multiplier cell includes a secondary winding of the first coupled inductor, a secondary winding of the second coupled inductor, a second capacitor, a first diode, the first capacitor, and the third switch.

Abstract: A server includes a chassis; a base panel fixedly coupled to the chassis; a movable panel coupled to the base panel; and a locking member fixedly coupled to the movable panel. The movable panel is movable relative to the base panel in a moving direction between an unlocked position where the locking member is configured to be disengaged with a locking panel of an electronic rack, and a locked position where the locking member is configured to be engaged with the locking panel of the electronic rack.