MODIFICATION
99 -- AUTOMATED BATTERY TEST STAND
- Notice Date
- 6/1/2004
- Notice Type
- Modification
- NAICS
- 334516
— Analytical Laboratory Instrument Manufacturing
- Contracting Office
- NASA/Lyndon B. Johnson Space Center, Houston Texas, 77058-3696, Mail Code: BH
- ZIP Code
- 77058-3696
- Solicitation Number
- NNJ04062867Q
- Response Due
- 6/9/2004
- Archive Date
- 6/1/2005
- Point of Contact
- Mary F. Thomas, Contract Specialist, Phone (281) 483-8828, Fax (281) 244-5337, Email mary.f.thomas@nasa.gov - Tim A. Boyes, Contract Officer, Phone (281) 483-1838, Fax (281) 244-5331, Email timothy.a.boyes@nasa.gov
- E-Mail Address
-
Mary F. Thomas
(mary.f.thomas@nasa.gov)
- Description
- THIS NOTICE CONSTITUTES AMENDMENT NO. 2 TO THE COMBINED SYNOPSIS/RFQ FOR AUTOMATED BATTERY TEST STAND. Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to provide answers to Questions 1 through 17 received. The due date for receipt of offers is extended to June 9, 2004. Question 1: Can Offeror propose system with one main channel to work only with predefine mapping to 24 Aux V, 4 Aux V (for current measurements), and 4 Aux T? Answer 1: No. It is important to cycle 9 batteries while recording the 24 auxiliary cell level voltages per battery (216 total), 36 string currents, and 36 string temperatures simultaneously. Question 2: In Section 4.2.3, Do you mean that NASA will collect data of 100 samples per second for one main channels, 24 Aux V, 4 Aux V for current measurements only? Answer 2: No. It is important to cycle 9 batteries while recording the 24 auxiliary cell level voltages per battery (216 total), 36 string currents, and 36 string temperatures simultaneously. Question 3: Is this meaning the data collection rate at 10 mS is acceptable? Answer 3: Yes, 10mS is acceptable but it must record for all 9 channels and auxiliary channels simultaneously. Question 4: During the pulse step, can Offeror assume the data collection at the rate above does not happen at the same time for all channels? Answer 4: No, during the course of 7 years, it is very probable that all 9 channels will pulse simultaneously. Question 5: During the pulse step, does NASA need to collect temperature data at the fast data collection rate? Answer 5: No, temperature can be recorded at a slow data acquisition rate. Question 6: Section 3.3. In order to calibrate the channel, can the channels stop operating or running the test and resume after the calibration process is finish? Answer 6: Yes. Question 7: How large are the batteries and array size? Answer 7: The test battery (P/N 157163) consist of 4 strings of 6 series lithium ion cells packaged in a customary design. The battery contains one 50-pin connector. Each string is terminated at the connector. This allows us to reconfigure the battery bundle as 1P-24S, 2P-12S, or 4P-6S with our mating wire harness that mates to the battery connector. Voltage sense leads for each cell are terminated at this connector. The battery bundles will only be tested in the 4P-6S configuration. The nominal voltage at discharge is 21.6V with a capacity of 8Ahr. The length, width, height, and weight are approximately 7.5”, 3”, 3”, and 1,269, respectively. Question 8: Is the ultimate location of the test site at a NASA site or should we include the option for housing everything? Answer 8: Yes, the Johnson Space Center in Houston, Texas, is the location of the battery life cycle test. Question 9: Should Offeror assume that the test stand temperature limits are as specified for the batteries. Is a thermal chamber part of the test system? (9F to 54 F) Answer 9: Type T thermocouples to full range should be used. The 5°C to 30°C (9°F to 54°F) is the thermal chamber environmental temperature. Question 10: Is there a requirement for complex loading profiles? (Sawtooth, non-linear ramps, pulse trains, etc.) Answer 10: Yes, see Section 4.2.3 for a worst case scenario (1 second at 160 Watts taking data at 100 samples per second on all 9 batteries with all the auxiliary voltage, current, and temperature measurements). Question 11: What is the harness requirement, or limitation, from the test stand to the battery array? Answer 11: Barrier Terminal Blocks with cable attachments Question 12: The test stand size limit is specified as 7 feet by 6 feet by 8 feet high…does this also include the cells under test? Answer 12: No, the batteries will be inside a thermal chamber. Question 13: Can Offeror unequally load the 3-phase supply? If not, what is the specification of the supply source? (Delta, 4-wire, Y, 5-wire, etc.) Answer 13: Yes. The specification is: 4-wire Y. Question 14: How are the thermocouples attached to the batteries? Answer 14: Stick-on thermocouples are acceptable. The thermocouples must have the ability to be removed from the test stand. Question 15: Is there a strong preference of which software language is used to write the test code? Answer 15: No, but it must run on a windows platform. A graphical user interface is required (no command line prompts will be accepted). The operating system/battery test stand software must be proven to be glitch free and have the capability to run 7 continuous years with no operating system/software maintenance. The system must be micro-controller based. Refer to Section 3.2 for micro-controller instructions. Question 16: Is there a strong preference of using some OTS loading-measuring equipment or should most partitions be custom designed-built? Answer 16: No, off-the-shelf equipment is acceptable as long as it meets the requirements of the specification. Question 17: Will the load banks that are part of the stand be cooled in any way? Answer 17: If load banks are used for discharging, they must be air cooled. The transient voltage spike should be less than or equal to 10% of the battery full scale voltage during charge or switch to discharge. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on May 24, 2004. Documents related to this procurement are available over the Internet. These documents reside on a World Wide Web (WWW) server which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/JSC Business Opportunities home page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=73 NOTE: THIS NOTICE WAS NOT POSTED TO WWW.FEDBIZOPPS.GOV ON THE DATE INDICATED IN THE NOTICE ITSELF (01-JUN-2004); HOWEVER, IT DID APPEAR IN THE FEDBIZOPPS FTP FEED ON THIS DATE. PLEASE CONTACT fbo.support@gsa.gov REGARDING THIS ISSUE.
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