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USER’S GUIDE
Multi-Cell Charger/Discharger
Agilent Model E4370A
Powerbus Load
Agilent Model E4371A
64-Channel Charger/Discharger
Agilent Models E4374A and E4375A
Agilent Part No. 5964-8138
Microfiche No. 5964-8139
September 2001
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Warranty Information CERTIFICATION Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members. WARRANTY This Agilent Technologies hardware product is war
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Safety Summary The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer's failure to comply with these requirements. GENERAL This product is a Safety Class 1 instrument (provided with a protective earth termina
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Safety Symbols SAFETY SYMBOLS Direct current Caution, risk of electric shock Earth (ground) terminal Caution, hot surface Protective earth (ground) terminal Caution (Refer to accompanying documents.) (Intended for connection to external protective conductor.) On - power (Indicates connection to the On - equipment (Identifies the on condition of ac mains.) part of the equipment.) Off - power (Indicates disconnection Off - equipment (Identifies the off condition of from the ac mains.) part of th
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Table of Contents Warranty Information 2 Safety Summary 3 Document Scope 4 Table of Contents 5 1 - GENERAL INFORMATION 9 Agilent MCCD System Capabilities 9 Basic Functions 10 Additional Features 10 Hardware Description 10 Agilent E4370A MCCD Mainframe 10 Agilent E4374A and E4375A 64-Channel Charger/Discharger Cards 12 Agilent E4371A Powerbus Load 12 External Power Source 14 Multiple Agilent MCCD Configurations 14 Measurement Capability 16 Voltage Measurements 16 Current Measurements 17 Capacity
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3 - CONFIGURATION 37 Configuring the LAN 37 1. Configure the HyperTerminal program 37 2. Connect the Agilent E4370A MCCD to the COM port on the PC 38 3. Fill Out the Agilent MCCD Configuration Screens 38 Network Configuration 39 Identification Configuration 40 Miscellaneous Configuration 41 Configuring the Digital I/O 41 Mixed Configuration Example 44 Accessing Calibration 44 4 - AGILENT MCCD USER INTERFACE 45 Description 45 PC Requirements 45 Browser Settings 45 Security 45 Localization 46 Acce
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cfCalTransfer 71 cfClose 71 cfDeleteGroup 71 cfGetCellStatus 72 cfGetCellStatusString 72 cfGetCurrent 72 cfGetDigitalConfig 73 cfGetDigitalPort 73 cfGetGroups 73 cfGetInstIdentify 74 cfGetInstStatus 74 cfGetMeasLogInterval 75 cfGetOutputConfig 75 cfGetOutputProbeTest 75 cfGetOutputState 76 cfGetRunState 76 cfGetSense 76 cfGetSenseProbeTest 77 cfGetSeqStep 77 cfGetSeqTest 77 cfGetSeqTestAnd 78 cfGetSeqTime 78 cfGetSerialConfig 78 cfGetSerialStatus 78 cfGetShutdownDelay 79 cfGetShutdownMode 79 cfG
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cfSetDigitalPort 92 cfSetErrorFunction 92 cfSetGroup 93 cfSetMeasLogInterval 93 cfSetOutputConfig 93 cfSetOutputProbeTest 94 cfSetOutputState 94 cfSetSense 95 cfSetSenseProbeTest 95 cfSetSeqStep 95 cfSetSeqTest 97 cfSetSeqTestAnd 99 cfSetSerialConfig 99 cfSetServerTimeout 99 cfSetShutdownDelay 100 cfSetShutdownMode 100 cfSetTimeout 100 cfSetTrigSource 100 cfSetVoltage 100 cfShutdown 101 cfStateDelete 101 cfStateList 102 cfStateRecall 102 cfStateSave 102 cfTrigger 102 cfWriteSerial 103 7 - C PROG
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1 General Information Agilent MCCD System Capabilities The Agilent Multi-Cell Charger/Discharger (MCCD) System has been designed to address the unique requirements and needs of lithium-ion cell manufacturing. The Agilent MCCD System can accurately charge, discharge, and measure lithium ion cells. It consists of an Agilent E4370A Multi-Cell Charger/Discharger mainframe with up to four Agilent E4374A or E4375A 64-Channel Charger/Discharger cards. When fully loaded each mainframe has 256 input/out
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1 - General Information Basic Functions ♦ Charger – The Agilent MCCD can deliver accurately controlled current and voltage into a cell for proper forming. Each cell is independently paced through the cell forming sequence. This means that some cells can be charging and others discharging if they are at different points in the sequence. ♦ Discharger – The Agilent MCCD can draw accurately controlled current from a cell for both forming and capacity measurement. ♦ Measurement – The Agilent MCCD can
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General Information - 1 E4370A E4374A CHARGER/DISCHARGER 1 3 5 7 MULTICELL CHARGER/DISCHARGER 1 Ready Fault 2 4 6 8 E4374A CHARGER/DISCHARGER 1 3 5 7 SYSTEM 2 Power Ready Fault Ready Active 2 4 6 8 FAULT E4374A CHARGER/DISCHARGER 1 3 5 7 External Internal 3 Ready Fault 2 4 6 8 E4374A CHARGER/DISCHARGER 1 3 5 7 LINE 4 On Ready Fault Off 2 4 6 8 LINE Applies and removes ac power from the Agilent MCCD. Relays inside the unit that connect the power bus are disengaged when power is off, so the power
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1 - General Information B C D E A F RS-232 RS-232 PORT A PORT B G H J K A + and - Power bus connectors G RS-232 connectors (ports A and B) H AC line connection (a universal AC input for line (- bus bar is connected to chassis ground) B voltages from 87 Vac to 250 Vac, 50/60 Hz.) Calibration status LEDs C J Auxiliary output connection Configuration switches D Transfer Calibration switch K Calibration port E Digital I/O connectors F LAN connection Figure 1-3. Agilent E4370A MCCD Mainframe Rear P
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E4372A General Information - 1 The Agilent E4371A Powerbus Load has a + and a − power bus connector on its rear panel. There is also a ground connection. To meet safety requirements, connect the ground terminal of the Agilent Powerbus Load to the ground terminal of the external dc source. The load receives its operating power from the power bus. If the dc voltage on the power bus drops below 22.8 volts, or if there is no power available on the power bus, the load will not operate. Note that the
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1 - General Information External Power Source For the charging cycle, each Agilent MCCD mainframe requires an external dc power source to power the cells. The external power source connects to the power bus terminals on the back of the mainframe. It must be rated at 24 volts and be able to source 125% of the required cell charging power. For example, to provide the cell charging power for a 256-channel system at 5.5 volts, 2 amperes per channel (or 2.8 kW), the dc power source must deliver appro
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General Information - 1 Agilent E4371A Powerbus Load Agilent E4371A 28 kW Powerbus Load Power Source (24 V @ 1167A) Agilent E4371A Powerbus Load Agilent E4371A Powerbus Load Agilent E4370A Agilent E4370A +4 E4374A cards +4 E4374A cards (256 channels) (256 channels) Agilent E4370A Agilent E4370A +4 E4374A cards +4 E4374A cards (256 channels) (256 channels) Agilent E4370A Agilent E4370A +4 E4374A cards +4 E4374A cards (256 channels) (256 channels) Agilent E4370A Agilent E4370A +4 E4374A
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1 - General Information Agilent E4371A Powerbus Load Agilent E4371A 46 kW Powerbus Load Power Source (24 V @ 1920A) Agilent E4371A Powerbus Load Agilent E4371A Powerbus Load Agilent E4370A Agilent E4370A +4 E4375A cards +4 E4375A cards (256 channels) (256 channels) Agilent E4370A Agilent E4370A +4 E4375A cards +4 E4375A cards (256 channels) (256 channels) Agilent E4370A Agilent E4370A +4 E4375A cards +4 E4375A cards (256 channels) (256 channels) Agilent E4370A Agilent E4370A +4 E4375A
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General Information - 1 sensing over local sensing is that when the remote sense leads are connected to the cell, the actual voltage of the cell will be measured. Any voltage drops in the load leads will not affect the measurement. Refer to chapter 2 under "Remote Sensing" for more information. NOTE: If your Agilent MCCD system is configured for local sensing, the measured output voltage may not reflect the actual voltage at the cell. This is because any voltage drops in the wires due to wire re
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1 - General Information Cell Resistance In addition to continuous voltage, current, and capacity measurements, the Agilent MCCD can also measure ac and dc cell resistance. This measurement is available on command when a sequence is not running, or as its own step in the forming sequence. The Agilent MCCD measures the ac cell resistance by first disconnecting the charge/discharge circuits from all cells. An ac waveform generator in the Agilent MCCD mainframe is connected sequentially to each cel
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General Information - 1 The following events can be used to trigger critical measurements: Change in voltage If the trigger is ∆∆ V, a data log record will be written to the buffer when a user- ∆∆ (∆∆ V) ∆∆ specified voltage change is exceeded. If ∆ V is set to 100 mV, then each time the voltage reading changes by more than 100 mV from the last logged entry, a record is written to the buffer. Change in current If the trigger is ∆∆∆∆ I, a data log record will be written to the buffer when a user-
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1 - General Information Internal Protection Functions There are internal relays between the power bus and the Agilent E4374A/E4375A Charger/Discharger cards. These relays protect the Agilent MCCD from overvoltage and undervoltage conditions on the power bus. They also protect the Agilent MCCD if an external fault condition is detected. Output regulators include several features to protect the cell from failures in the hardware. Internal circuits connected in series with each channel protect the
