Johnson Controls Technology Company

Cps Technology Holdings LLC

Johnson Controls Technology Center

Brian Christopher Sisk

Perry M Wyatt

Daniel B Le

Ryan S Mascarenhas

Zhenli Zhang

Zhihong H Jin

Timur L Aliyev

Miaomiao Ma

Kem M Obasih

Thomas M Watson

Mark R Johnson

Qi Zhang

Junwei Jiang

Thanh T Nguyen

Jason Lee Roberts

Jason L Roberts

A battery system includes a lithium ion battery that couples to an electrical system. The battery system also includes a battery management system that electrically couples to the lithium ion battery and controls one or more recharge parameters of the lithium ion battery. Additionally, the battery management system monitors one or more parameters of the lithium ion battery. Further, the battery management system controls the recharge parameters of the lithium ion battery based on at least one lithium plating model and the monitored parameters. Furthermore, the at least one lithium plating model indicates a relationship between the one or more parameters of the lithium ion battery and a likelihood of lithium plating occurring in the lithium ion battery.

Battery module lithium plating reduction

Embodiments describe a battery system that includes a first battery module coupled to a regenerative braking system and a control module that controls operation of the battery system by: determining a predicted driving pattern over a prediction horizon using a driving pattern recognition model based in part on a battery current and a previous driving pattern; determining a predicted battery resistance of the first battery module over the prediction horizon using a recursive battery model based in part on the predicted driving pattern, the battery current, a present bus voltage, and a previous bus voltage; determining a target trajectory of a battery temperature of the first battery module over a control horizon using an objective function; and controlling magnitude and duration of electrical power supplied from the regenerative such that a predicted trajectory of the battery temperature is guided toward the target trajectory of the battery temperature during the control horizon.

Cooling strategy for battery systems

A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.

Architectures for batteries having two different chemistries

An automotive battery module having dual voltage is disclosed, including a housing and a plurality of battery cells connected to form battery cell blocks disposed in the housing. A battery control unit is provided disposed in the housing and is configured to control operation of a battery system. The battery system includes at least one switching device operably connected to a first battery cell block in a first connection arrangement. The first battery cell block is configured to deliver a first voltage. The switching device is also operably connected to a second battery cell block in a second connection arrangement. The second battery cell block is configured to deliver a second voltage. A plurality of terminals are provided on the housing and electrically coupled to the battery control unit and plurality of battery cells, providing an external electrical connection to deliver the first voltage and the second voltage.

A micro-hybrid battery system includes a lithium ion battery module configured to be coupled to an electrical load. The lithium ion battery module includes a housing. The lithium ion battery module also includes a first lithium ion battery cell disposed in the housing and having a first active material chemistry including a first cathode active material and a first anode active material. The lithium ion battery module also includes a second lithium ion battery cell electrically connected to the first lithium ion battery cell and disposed in the housing. The second lithium ion battery cell has a second active material chemistry including a second cathode active material and a second anode active material. The first and second active material chemistries are different such that the first and second lithium ion battery cells have different open circuit voltages.

Combinatorial chemistries for matching multiple batteries

Switched passive architectures for batteries having two different chemistries

Passive architectures for batteries having two different chemistries

A 12 volt automotive battery system includes a first battery directly coupled to an electrical system, in which the first battery includes a first battery chemistry, and a second battery coupled in parallel with the first battery and directly coupled to the electrical system, in which the second battery includes a second battery chemistry with a higher coulombic efficiency than the first battery chemistry. The first battery and the second battery are non-voltage matched such that a voltage range of the second battery is higher than a voltage range of the first battery. The first battery steers power generated during regenerative braking to the second battery using internal resistance of the first battery to enable the second battery to capture a majority of the power generated during regenerative braking, and the second battery provides power to the electrical system due to the higher voltage range of the second battery when the second battery has a positive state of charge.

An energy storage system of a vehicle includes an energy storage device, a regulation device coupled to the energy storage device, one or more sensing devices for sensing current levels, voltage levels, temperature levels, and/or pressure levels of the energy storage device and/or on components thereof, and a control unit configured to determine dynamically a power flow in/out of the energy storage device using a fuzzy logic approach. The regulation device is configured to regulate at least one of a voltage level, a current level, and any additional state parameter of the energy storage device.

Growing community of inventors

Mequon, WI, United States of America

Brian Christopher Sisk