Communications Manufacturing Company

Cummins Inc.

Communications Technology Corp.

Other

The Raymond Corporation

Brammo, Inc.

Cummins Battery Systems North America LLC

Lawrence O Hilligoss

Myron C Butler

William R Hilligoss

Daniel Riegels

George Alter

Paul A Daniel

Adrian G Lamy

Minyu Cai

Charles R Lee

Daniel M Riegels

Brian Joseph Wismann

Aaron Bland

Tyler A Rash

Carl P Bright

Joseph E Cragnotti

Matthew D Nelson

Rick Lewis

Greg Stoermer

Craig A Bramscher

Nitisha Manchanda

James A Abdo

Joe Cragnotti

A cell assembly group is provided, comprising: a plurality of cell assemblies, each cell assembly including an electrochemical cell and an outer wrap surrounding the cell; a foam sheet positioned adjacent one side of one cell assembly; a plurality of heat plates, each heat plate being positioned between two cell assemblies; and at least one spacer positioned between one heat plate and one cell assembly. Each outer wrap of each cell assembly of the plurality of cell assemblies includes a body having an inner surface that engages a rearward wall of the electrochemical cell of the cell assembly, a first portion having a flame barrier that engages a forward wall of the electrochemical cell of the cell assembly, and a second portion that engages an outer surface of the first portion.

Thermal runaway mitigation system for high capacity energy cell

A battery module for use in a battery pack is disclosed. The battery module (') comprises a plurality of battery cells () and a sensing circuit () extending across the battery cells. A monitoring unit () is connected to the sensing circuit. The monitoring unit comprises a continuity detector () arranged to detect a break in continuity of the sensing circuit (). This can allow a thermal event occurring in one of the plurality of cells to be detected.

Detecting thermal events in battery packs

The present disclosure provides a circuit for balancing voltages of battery packs to be connected in parallel, comprising: IN-side switches and OUT-side switches; a DC-DC converter with an IN terminal connected to the IN-side switches and an OUT terminal connected to the OUT-side switches; and a controller to operate an IN-side switch to connect a Vbattery pack to the IN terminal, operate an OUT-side switch to connect a Vbattery pack to the OUT terminal, and activate the DC-DC converter to transfer energy from the Vbattery pack to the Vbattery pack. The controller responds to an IN terminal voltage being sufficiently close to a voltage of a first battery pack by operating an IN-side switch to connect the first pack to the IN terminal, and responds to an OUT terminal voltage being sufficiently close to a voltage of a second battery pack by operating an OUT-side switch to connect the second battery pack to the OUT terminal.

DC-DC-converter-based active voltage-balancing system and method for parallel battery packs

Provided are systems and methods for enclosing an energy source of a material handling vehicle. The systems and methods include an enclosure having a front wall, a rear wall, and an interior compartment, an inlet channel integrally formed with the front wall and in fluid communication with the interior compartment, the air inlet channel defined by an inlet louver and an inlet flange, an outlet channel integrally formed with the rear wall and in fluid communication with the interior compartment, the air outlet channel defined by an outlet louver and an outlet flange, one or more energy source cells positioned within the interior compartment; and a cooling fan in fluid communication with the inlet channel and the interior compartment. The cooling fan operates to draw air through the inlet channel to the interior compartment such that air within the interior compartment is expelled out of the outlet channel.

Energy source enclosure systems and methods with through-air thermal management

Embodiments of encapsulated battery packs, control circuitry, and their methods of manufacture are described. In one such embodiment, a battery pack includes a plurality of electrochemical pouch cells and an elastomeric encapsulant that forms at least one external surface of the battery pack. In another embodiment, a battery pack includes a plurality of electrochemical pouch cells with a portion of an encapsulant disposed between the electrochemical pouch cells and the outer housing. In yet another embodiment, a method of controlling an operation of a system includes using a current threshold of one or more electrochemical cells determined at least in part on at least one of a temperature and a state of charge of the one or more electrochemical cells.

Battery pack including plural electrochemical cells encapsulated by encapsulant and method of manufacture

A control apparatus is provided for use in an electric vehicle having a throttle input device. The throttle input device is operable by a rider for generating a throttle signal for controlling the speed of the electric vehicle. The control apparatus, which adjusts the throttle signal, includes a rider input mechanism and a control device. The rider input mechanism can be manipulated by the rider to provide a given input. The control device is coupled to the rider input mechanism and to the output of the throttle input device. The control device adjusts the throttle signal based on the given input provided by the rider input mechanism.

Method and apparatus for adjusting throttle control signals in electric vehicles

A longitudinal balance test circuit connects to the tip and ring lines of a pair of telephone wires. It also connects to a shield conductor that extends with the tip and ring lines. The test circuit includes a transformer which has two windings. One winding connects to the tip and ring lines, and it also connects to the shield conductor. The other winding connects to a signal generator that provides an alternating current test voltage with which to test longitudinal balance of the tip and ring lines. A method of testing a telephone line for longitudinal balance comprises: measuring an alternating current test signal applied to a telephone line under test; measuring stressed noise of the telephone line in response to the applied. alternating current test signal; calculating, in response to the measured alternating current test signal and the measured stressed noise, an adjusted value related to longitudinal balance regardless of the length of the telephone line under test; and displaying the adjusted value.

Telephone line longitudinal balance tester and method

A telephone technician's remote assist apparatus connects into a telephone line to be tested by the technician from a remote location. Control signals are sent from the remote location to the remote assist apparatus over the same pair of wires of the telephone line under test. A particular control signal encoding includes two consecutive leading star (**) dual-tone multi-frequency tones. The remote assist apparatus opens the telephone line in response to at least one control signal, and the apparatus preferably automatically restores the line after a predetermined time so that the subscriber is not left disconnected. The particular control signal encoding and the automatic restoring features can be implemented without using the same pair of wires under test. Thus a method for use in testing a telephone line can include controlling by using the same pair of wires under test, but a method can also include using the particular type of encoded control signal and/or the automatic restoring features without using the same pair of wires under test.

Telephone technician's remote assist apparatus and method

A system and method for providing wireless access to a telephone line of a telephone network utilize a mobile terminal and a crossconnect base station. The mobile terminal transmits a radio frequency signal carrying a telephone communication. The crossconnect base station connects to a telephone line at a crossconnect box of a telephone network, receives the radio frequency signal carrying a telephone communication, and communicates the telephone communication over a connected telephone line. Other aspects of the system and method of the present invention include: (1) providing a wakeup signal from the mobile terminal to the crossconnect base station so that the base station can be powered down when not in use, thereby conserving energy; (2) receiving both the wakeup signal and the primary communication signal (which can carry data and/or voice) through a single antenna connected to the base station at the respective crossconnect box; and (3) recharging one or more batteries in the base station from an energy source of the telephone network.

Wireless access to telephone network dial tone

The equipment includes a front panel with LED indicators, key pad and a number of special function keys as well as an LCD message printout and volt/ohm meter. A hand set is readily available at the front panel as the line check unit functions with a commercially available craft terminal, a CMC Type 7910D terminal known as DATASTAR.TM., which includes the master central processing unit and random access memory for interactive function with the line check system. The DATASTAR.TM. unit communicates directly with a controller section that includes speaker power amp, LCD circuitry and 128K random access memory as well as a digital bus interface. The controller board is then connected through both a digital bus and an analog signal bus to an analog circuitry that includes relay control and various signal routing and test signal functions. The analog circuitry is then in communication with the volt/ohm meter and analyzer circuitry.

Apparatus for telephone line checking

An apparatus and method for testing voltage arresters and current shunting circuits within a telephone circuit protector are described. A typical protector tested by the apparatus and method includes two voltage arresters and two current limiting circuits. One set of a voltage arrester and a current limiting circuit are tested for voltage breakdown, continuity and ground faults by actuation of a single test operating switch. The other voltage arrester and current limiting circuit are then selected and tested by a single actuation of the test operating switch. Breakdown voltage, continuity, ground fault and low battery visual indicators are provided.

Apparatus and method for testing a telephone circuit protector

Apparatus for connecting in series a plurality of communication line pairs, typically direct connected security loops used by alarm companies for monitoring customer's facilities. A bridge with pairs of bridge terminals and switches for connecting bridge terminal pairs to communication line pairs or to terminating lines. Local and remote control for the switches and control apparatus which permits service personnel to selectively terminate a bridge terminal pair with a direct or zero resistance connection line and leave a subscriber's communication line open, for maintaining service for other communication lines connected to the bridge while performing maintenance on the disconnected line. The apparatus is suitable for bridges with various numbers of terminals, such as six way, eight way and twelve way.

Communication lines with terminate and leave capability-DC alarm bridge

Apparatus for interconnecting a plurality of communication line pairs, typically voice frequency lines of the telephone type. A passive resistance bridge with pairs of bridge terminals and switches for connecting bridge terminal pairs to communication line pairs or to terminating resistors. Local and remote control for the switches and control apparatus which permits service personnel to selectively terminate a bridge terminal pair with a fixed resistor and leave a subscriber's communication line open, for maintaining service for other communication lines connected to the bridge while performing maintenance on the disconnected line. The apparatus is suitable for two wire and for four wire systems and for resistance bridges with various numbers of terminals, such as six way, eight way and twelve way.

Communication lines with terminate and leave capability-VF data bridge

An apparatus for remotely testing electrical circuits, such as telephone circuits, includes a stand-alone unit which is located in the end office, for example, for remote access by use of an ordinary push-button telephone set sending dual tone multiple frequency signals. The apparatus has a twin-bus structure wherein one of the busses is an analog bus through which the telephone link is made and over which analog test signals are communicated; the other bus is a digital bus for communicating digital control and data signals with a microcomputer included within the apparatus. Operating between the two busses are suitable interface circuits for receiving the control signals from the telephone set and for communicating the analog test signals to a selected electrical circuit to be tested. The analog test signals are generated by an analog test signal circuit also connected between the analog and digital busses. The microcomputer, connected only to the digital bus, controls the operation of the apparatus in response to dual tone multiple frequency control signals received from the telephone set. Responses from the test are transmitted to the remote site as synthesized speech signals for verbally communicating the results through the telephone set.

Remote testing system for electrical circuits

Method and apparatus for testing pairs of conductors of a telephone cable, including method and apparatus for measuring the capacitance of a circuit component such as a pair of conductors. The capacitance of each of twenty-five pairs of conductors of a cable is measured and the capacitance value is stored, the median value of capacitance is identified and stored, each measured capacitance value is compared with the median value, and an out-of-limits indication is made when a measured capacitance value deviates from the median value by more than a predetermined limit. Capacitance is measured by connecting the circuit component, such as a pair of conductors, in the timing circuit of a monostable multivibrator, charging and discharging the timing circuit to vary the elapsed time of the on output of the multivibrator. The multivibrator controls the output of an oscillator and the oscillator output pulses are counted, with the count total varying as a function of the capacitance of the conductor pair. The instrument may be calibrated to read out directly in capacitance if desired.

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Ashland, OR, United States of America

Lawrence O Hilligoss