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Texas Instruments bq2014HEVM-001, User Manual

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Texas Instruments bq2014HEVM-001 User Manual Download Page 23

8-1

Operation

 

Operation

This chapter details the operation of the bq2014H EVM software.

Topic

Page

8.1

Starting the Program

8-2

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8.2

Initialization

8-2

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8.3

Data Screen

8-4

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8.4

Status Screen

8-5

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8.5

Pro Screen

8-5

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8.6

Data Logging

8-6

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Chapter 8

Summary of Contents for bq2014HEVM-001

Page 1: ... May 2001 Advanced Analog Products User s Guide SLUU105 ...

Page 2: ...design TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or relating to any combination machine or process in which such products or services might be or are used TI s publication of information regarding any third party s products or services does not constitut...

Page 3: ...Schematic 3 1 3 1 Schematic 3 2 4 DM2014H Physical Layouts 4 1 4 1 Board Layout 4 2 5 DM2014H Bill of Materials 5 1 5 1 Bill of Materials 5 2 6 DM2014H Performance Specification Summary 6 1 7 EVM Hardware and Software Setup 7 1 7 1 Software Installation 7 2 7 2 Hardware Connection 7 2 7 2 1 Connecting the DM2014H to a Battery Pack 7 2 7 2 2 PC Interface Connection 7 3 8 Operation 8 1 8 1 Starting ...

Page 4: ...en 8 2 8 2 Setup Screen 8 3 8 3 bq2014H Data Screen 8 4 8 4 Status Screen 8 5 8 5 Pro Screen 8 5 Tables 1 1 Ordering Information 1 2 2 1 Full Capacity Programming 2 2 2 2 Self Discharge Programming 2 3 2 3 Pack Voltage Programming 2 3 5 1 Bill of Materials 5 2 6 1 Performance Specification Summary 6 1 7 1 DM2014H to EV2200 Connection 7 3 8 1 Resistor Designations for Setup Screen Input 8 3 ...

Page 5: ... one bq2014H IC five LEDs to display remaining capacity and all other components onboard necessary to monitor capacity and other critical parameters in NiCd or NiMH battery packs The DM2014H connects directly across the cells in a battery With the EV2200 interface board and software the user can read the bq2014H data registers and evaluate the functions of the bq2014H under different charge and di...

Page 6: ...system analysis 1 2 Kit Contents DM2014H preconfigured circuit module with sense resistor EV2200 PC interface board Set of evaluation software disks entitled EV2200 HDQ PC serial cable Set of support documentation 1 3 Ordering Information Table 1 1 Ordering Information EVM Part Number Chemistry Pack Voltage Capacity bq2014HEVM 001 NiCd NiMH 12 0 V 650 mAh Can be changed by reprogramming through re...

Page 7: ...s necessary to accurately monitor and display the capacity of up to 14 nickel cells The DM2014H includes five LEDs to display remaining capacity in 20 incre ments of the programmed capacity The LEDs are activated with the onboard pushbutton switch Contacts on the DM2014H provide direct connection to the battery stack BAT BAT and the serial communications port HDQ The system load and charger connec...

Page 8: ...quires the pulldown resistor and the float Z requires no resistors on the programming pin The shaded area of the tables indicates the bq2014HEVM 001 configuration See the bq2014H data sheet for a complete description of how the bq2014H is programmed 2 2 1 Full Capacity Pins 2 5 of the bq2014H determine the full capacity or programmed full count PFC of the DM2014H Resistors R12 R15 and R17 20 set t...

Page 9: ...d of Discharge Level 2 bq2014HEVM 001 1 2 MΩ 1 2 MΩ 100 K 10 V 9 5 V 2 2 4 Programming Hardware Changes The following procedure changes the configuration of DM2014H to other unshaded options listed in the tables above 1 Ensure that the DM2014H is disconnected from the battery 2 Determine the resistors required to achieve the high H low L or float Z states on the program pin inputs 3 Remove the 200...

Page 10: ...2 4 ...

Page 11: ...all possible components on the board for var ious configurations including all configuration resistors Only those resistors that set the desired configuration should be installed The schematic notes in dicate where variations exist Topic Page 3 1 Schematic 3 2 Chapter 3 ...

Page 12: ...Schematic 3 2 3 1 Schematic Figure 3 1 is the DM2014H schematic diagram Figure 3 1 DM2014H Schematic ...

Page 13: ...4 1 DM2014H Physical Layouts DM2014H Physical Layouts This chapter contains the board layout and assembly drawings for the DM2014H Topic Page 4 1 Board Layout 4 2 Chapter 4 ...

Page 14: ...ard Layout 4 2 4 1 Board Layout Figure 4 1 shows the PCB layers and assembly drawing for the DM2014H Figure 4 1 DM2014H Layout 04 06 99 Rev A Layer 1 Side Silkscreen 04 06 99 Rev A Layer 2 Side Silkscreen ...

Page 15: ...5 1 DM2014H Bill of Materials DM2014H Bill of Materials This chapter contains the bill of materials required for the DM2014H Topic Page 5 1 Bill of Materials 5 2 Chapter 5 ...

Page 16: ...r 100 KΩ 1 10 W 5 Venkel CR0805 10 W104JT 805 R6 1 Resistor 1 2 MΩ 1 10 W 1 Venkel CR0805 10 W1204FT 805 R7 1 Resistor 100 KΩ 1 10 W 1 Venkel CR0805 10 W1003FT 805 R10 1 Resistor 0 050 Ω 3 W 1 LVR 3 AXIAL Dale LVR 3 R050 1 3 W TH R16 R21 R22 3 Resistor 330 Ω 1 10 W 5 Venkel CR0805 10 W331JT 805 R26 1 Resistor 300 KΩ 1 10 W 5 Venkel CR0805 10 W304JT 805 R5 R27 1 Resistor 10 KΩ 1 10 W 5 Venkel CR080...

Page 17: ...mmarizes the performance specifications of the DM2014H Table 6 1 gives the performance specifications of the circuit Table 6 1 Performance Specification Summary Specification Min Typ Max Units Charge and Discharge Current 0 05 3 A Note Charge and discharge maximums are limited by the PCB design Chapter 6 ...

Page 18: ...6 2 ...

Page 19: ...M Hardware and Software Setup This section describes how to install the bq2014H EVM PC software and how to connect the different components of the EVM Topic Page 7 1 EVM Hardware and Software Setup 7 2 7 2 Hardware Connection 7 2 Chapter 7 ...

Page 20: ...maining disks and installs a Windows application group 7 2 Hardware Connection There are three hardware components to the bq2014H EVM 1 DM2014H circuit module 2 EV2200 PC interface board 3 PC 7 2 1 Connecting the DM2014H to a Battery Pack Figure 7 1 shows how to connect the DM2014H to a stack of cells the sense resistor and the system load charger Figure 7 1 DM2014H Connection to Cells Sense Resis...

Page 21: ...for interface to the PC 1 Connect the DM2014H based smart battery to the EV2200 using wire leads as in Table 7 1 2 Connect the PC serial cable to the EV2200 and the PC COM port Table 7 1 DM2014H to EV2200 Connection DM2014H Based Battery EV2200 P1 HDQ SMBD HDQ1 or SMBC HDQ2 P7 PACK VSS The bq2014H EVM is now set up for operation ...

Page 22: ...7 4 ...

Page 23: ...ion This chapter details the operation of the bq2014H EVM software Topic Page 8 1 Starting the Program 8 2 8 2 Initialization 8 2 8 3 Data Screen 8 4 8 4 Status Screen 8 5 8 5 Pro Screen 8 5 8 6 Data Logging 8 6 Chapter 8 ...

Page 24: ...ction describes the settings that must be made before the EVM soft ware can properly display data 8 2 1 Device Program Settings Select the bq2014H option from the Options Device Selection pulldown menu This sets the software to operate with the bq2014H The program may prompt to quit and restart the program If so follow the on screen instructions and re start the program Once restarted the software...

Page 25: ...gisters of the bq2014H The value can be entered in the selected box and written to the device by depressing the Write Settings to Device button The screen also displays how pins 2 Prog1 through 7 Prog6 are pro grammed The Reset Device button initializes the bq2014H with the pro grammed settings A device reset can also be performed by writing LMD 0 and then PPFC 0 using the Data screen The Table Da...

Page 26: ... be displayed in hexa decimal or decimal The Polling Frequency box sets the data polling rate of the data fields Figure 8 3 bq2014H Data Screen The registers can be written by selecting a data box overwriting the present value with the desired value and pressing ENTER The data must be entered in the same base decimal or hexadecimal as the selected base The screen also shows the bit status of the s...

Page 27: ... bq2014H operation The program shows the average current activity as well as the temperature and remaining capacity of the battery under evaluation Figure 8 4 Status Screen 8 5 Pro Screen The Pro screen allows read and write access to all the registers of the bq2014H Figure 8 5 Pro Screen ...

Page 28: ...se the dwell feature Enter the address to read in the Dwell Address box which can be selected with the pulldown menu Set the dwell frequency in the Dwell Frequency box Click the Dwell button in the Dwell Contents box The contents of the register will start to scroll at the selected frequency 8 6 Data Logging The bq2014H registers can be logged by using the data log function To log the data and cre...

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