CPS Technology Holdings LLC

A battery management system (BMS) removably connectable to at least one of a battery and an accessory is described. The accessory is operable by the BMS. The BMS includes processing circuitry configured to determine a first plurality of functions associated with the BMS and a second plurality of functions associated with the accessory based on BMS information and accessory information, respectively, determine at least one operation mode based on at least one parameter associated with the battery, the first plurality of functions, and the second plurality of functions, and operate at least one of the BMS and the accessory based on the determined at least one operation mode.

Systems and methods for improving operation of an automotive battery system including an automotive electrical system comprising a battery system that uses operational parameters, predicted internal resistance of a battery expected over a prediction horizon, and real-time internal resistance of a battery to increase performance and reliability. The battery system includes a battery electrically coupled to electrical devices in the automotive system, sensors coupled to the battery that determine terminal voltage of battery, and a battery control system communicatively coupled to sensors. The battery control system determines a charging power limit used to control supply of electrical power to the battery when charging the battery, based on predicted internal resistance when measured terminal voltage of the battery is not greater than a lower voltage threshold and based on a real-time internal resistance of the battery when the measured terminal voltage of the battery is greater than the lower voltage threshold.

A battery system includes battery cells to store electrical energy and to output electrical power. The battery system further includes a housing, a shunt, a control board, and a connector assembly. The housing includes a cavity that the shunt is disposed in and is in direct contact with, where the cavity facilitates dissipating torsional force exerted on the shunt. The control board is disposed within the housing and includes sensing circuitry to determine an operational parameter of the battery cells and control circuitry to facilitate controlling operation of the battery cells based on the operational parameter. The connector assembly electrically couples the shunt to the sensing circuitry via a spacing connector and a securing connector. The spacing connector is disposed between the control board and an inner surface of the housing while the securing connector extends through the shunt to couple to the spacing connector through the housing.

One embodiment of the present disclosure describes systems and methods responsible for reducing errors in a battery model used in the operation of a battery control system. The battery control system may operate based on a predicted response of the battery derived from the battery model. If the battery model is not calibrated/validated, errors in the battery model may propagate through the predicted response of the battery to the operation of the battery control system. A calibration stimulus may result in a difference between an actual response of the battery and the predicted response of the battery to the same calibration stimulus. A validation technique, which uses a difference between the predicted response and the actual response of the battery to the calibration stimulus as a method to calibrate the battery model, may protect the battery control system from the contribution of errors from an uncalibrated battery model.

A method, system, node and device are disclosed. A collector device configured to communicate with a vehicle system, a health node and at least one sensor is described. The collector device includes a communication interface configured to receive at least one measurement from the at least one sensor; and transmit battery data using at least one of a first communication link and a second communication link. The collector device further includes processing circuitry configured to determine the battery data based at least in part on the received at least one measurement; and determine at least one of the first communication link and the second communication link for transmitting the battery data to the health node. The at least one of the first and second communication links is determined based at least in part on a usability of the second communication link to transmit the battery data.

A bus bar assembly for a battery module having a plurality of electrochemical cells. The bus bar assembly comprising a bus bar carrier configured to receive bus bars to interface with terminals of the plurality of electrochemical cells, a flex circuit disposed on the bus bar carrier, and a temperature sensor welding tab comprising a circuit engagement region secured to the flex circuit and a welding region to be welded to an end of an electrochemical cell. Also disclosed is disclosed is a battery module including the bus bar assembly and a method of making the battery module.

A lead connection for coupling a first end of a lead to a post and a bushing of a battery is described. The lead connection includes a first weld that includes the bushing and the post welded to the bushing. The lead connection also includes a second weld. The second weld includes the first weld and the first end of the lead. At least a portion of the first weld is distributed around and over the first end of the lead to electrically couple first end of the lead to the bushing and the post.

A bus bar for a battery module is disclosed. The bus bar has a base and a sidewall. The sidewall includes a folded configuration forming a dual wall. The dual wall includes a center projection. One or more stress-relief features are provided on the sidewall. A plurality of terminal receivers are provided on the base and configured to couple to a plurality of battery terminals. A battery module including a bus bar is also disclosed.

A battery device removably connectable at least to a first battery and a second battery is described. The battery device includes processing circuitry configured to determine a battery health condition of the first battery based at least in part on a plurality of first data samples, a plurality of second data samples, a plurality of third data samples, a plurality of fourth data samples, and a first spread. The plurality of first data samples is associated with the first sensor and a first electrical parameter of the first battery. The plurality of second data samples is associated with the first sensor and a second electrical parameter of the first battery. The plurality of third data samples is associated with the second sensor and a third electrical parameter of the second battery. One or more actions are performed based on the determination of the battery health condition.