I hope you can help with the bq27410EVAL I have. I'm trying to upgrade the EVAL board from V1.01 to V1.03 and have the bqSWEV program installed. However the default dfi file in the sw install is V1.01, while the senc file from the bq27410 folder is V1.03 and I can't find any mention anywhere of how to program the senc. I have used several of the bq20zxx which seem to be better supported, at least you can usually find an answer in the documentation.
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bq27410-G1 senc and dfi
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bq76PL536EVM-3 latest schematics
Hello,
I found attached schematics of bq76PL536EVM.(rev E6)
Is this schematics latest version ?
If this is not latest version, could you please share the latest schematics of bq76PL536EVM-3 ?
Best Regards,
Ryuji Asaka
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How to update ROM in bq20z75
Hi, everyone
How to update ROM in bq20z75, I need to update ROM sometimes with OS.
Best regards
J.C Chen
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BQ27421 Resetting
Hello,
I am using the BQ27421 on a product I'm working on. When capacity hits '0%', the RAM seems to lose the values that I had configured, which is a pretty serious issue. The design relies on the BATLOWEN function of the gauge to inform the system when not to attempt a startup, which is not the default value, so if that functionality is wiped away by the gauge losing its configuration values, I've got a problem. The battery voltage is still quite a ways above the minimum stated by the data sheet required to keep the 1.8V LDO alive, which is what I thought was being used to keep those values valid. Is there another mechanism on the IC that would cause the IC to reset once the capacity hits 0%?
Thanks,
Jake
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Bq34z110 chemical ID for Lead Acid AGM, deep cycle type
Hi,
I currently have a project that involves a 12V lead acid battery pack (2 batteries, 100Ah each connected in parellel) that has a combined capacity of 200Ah. The particular lead acid type for this pack is a AGM type (Glass mat, valve regulated, 6 series cell), deep cycle.
I have downloaded bq evaluation software, ran a chemical update tool from TI to get the latest chemical IDs.
However, looking at the excel sheet provided, it seems that no lead acid batteries of the AGM variance have been characterized. Below is a snippet of it:
| Chemical ID | Known compatible cells | Comment | status, 0 if OK, 1 if NRND | |
| 0800 | Leoch: Valve Regulated 6s (7200 Ah) | 1 | ||
| 0801 | EnerSys: Cyclon DT (4500) | 1 | ||
| 0802 | Panasonic: R121R3P | 1 | ||
| 0803 | Panasonic: LC_P1220P, Enersys: Cyclone_D (2500mAh) | 0 | ||
| 0804 | Sonnenschien: A512 (10A) | 0 | ||
| 0805 | Exide: FX10_12XT9_8 (10Ah) | 0 | ||
| 0806 | Bazooka: HPT-150 (150Ah) | CONTACT TI BEFORE USING THIS ID | 0 | |
| 0807 | US.Battery: XTREME_Capacity (155Ah) | 0 |
Since chemical ID 0800- 0802 are not recommended for new designs (NDRD), I am not considering them.
As for the rest of the chemicals, the closest match is the Sonnenschien: A512 (10A), which is a deep cycle gel battery. The panasonic P1220P is meant for UPS applications and not for deep cycle discharge in my opinion.
I have heard of a mathcad program that will help the engineer to choose the closest chemical ID and I will go an attempt to do that.
I have two questions:
1) Is there any updated chemical ID library that has more batteries that are characterized? Any timeline of any newer version?
2) Why are chemical IDs 0800- 0802 flagged as NRND ?
I have searched the forums and most of the posts are related to the Litnium Ion battery chemistry.
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bq78PL11X API Demo does not find the USB - GPIO adapter and crashes when I click the Discover button
bq78PL11X API Demo does not find the USB - GPIO adapter and crashes when I click the Discover button. I then opened the API Demo project in C# (the express edition), and traced the problem to the fact that the call to api.Discover() does not find any adapters. Since that calls a method in a .dll I cannot investigate further.
The bqWizard however has no problem using the adapter. Using the bqWizard I was able to read from the pack.
Any ideas of what could be wrong?
I run Windows 7, 64 bit, Enterprise edition.
Thank you.
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Gauge studio 1.3.12 and bq34z110
Hi,
Gauge studio is not working properly with the bq34z110 chip. I am connecting the chip to the PC via the EV2300 eval board from TI. It seems to have properly identified the EV module, but not the bq34z110 chip. Below is a screenshot of the problem:
Right not the quick start manual does not mention anything about the list of compatible chips that GaugeStudio can communicate with. This is very frustrating.
Please enlighten me whether gauge studio has been verified to work with the bq34z110.
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BQ2013H NAC寄存器
关于NAC寄存器数据怎么转化为电量信息呢？
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BQ34Z100 cannot edit data flash content
I cannot seems to be able to edit / amend the content of the data flash after I import the attached .GG file.
something is wrong, the calibration doesn't work also.
can I / how can I do a MASTER RESET or something to un-lock the device again ?
many thanks.
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8-cell LiFePO4 protection and monitor
Hi,
We are building an 8-cell LiFePO4 battery and I am tasked with the monitoring and protection of the cells. I have been considering bq34z100 in combination with bq77908a. The combination would be ideal if the host could ask the ba77908a what the individual cell voltages are, but this is not possible, is it? Is there an alternative to bq77908a or to the combination I mentioned?
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BQ27200 - I2C Incremental Read - Only first byte is sent
I am working on a prototype of a rechargeable battery pack for a commercially produced Arduino shield and I am trying to test the communications with the BQ27200 Gas Gauge IC that we have included in the design. I have tried using the "Wire" library (offically supported by Arduino) and an alternative I2C library with better implementation of the repeated start condition.
My test program is as follows:
#include <Wire.h>
byte data[6];
unsigned int Temperature;
byte Add;
void setup()
{
Serial.begin(9600);
Wire.begin();
}
void loop()
{
Serial.println("Beginning I2C Test");
Serial.println("Reading Temperature...");
Wire.beginTransmission(0x55);
Wire.write(byte(0x06));
Wire.endTransmission();
Wire.requestFrom(0x55,6);
int i = 0;
while (Wire.available())
{
data[i++] = Wire.read();
}
Wire.endTransmission();
while (i>0)
{
Serial.println(data[--i],BIN);
}
Serial.print("\n\n");
delay(2700);
}The output is (Memory address top byte 0x0B, bottom: 0x06):
Beginning I2C Test
Reading Temperature...
11111111
11111111
11111111
11111111
11111111
11010111
It is a little confusing looking at this because it is listed in reverse, but it is printed in the format of the memory map in the datasheet. These values are read in order from the bottom (B11010111) to the top. The first byte read is correct, but the rest are obviously not. My interpretation is that the bq27200 seems to be stopping the transmission after the first byte is sent. Perhaps it is interpreting a STOP instead of an ACK? Below is a capture of this moment in the communications (the end of the first byte read). Both libraries resulted in the exact same waveform. Any help would be appreciated.
Thanks, Aaron
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BQ34Z100 PACK- connection to sense current
Hi TI,
I am quite confused with the Ground connection of bq34z100 fuel gauge. I am using Polymer Lithium battery pack with only 2 terminals. May I know how do I sense the current with PACK- terminology?
1. I have checked from the bq34z100 typical implementation. How do I connect to PACK- if my battery does not have this terminal?
2. After this, my battery will be charged by the Solar charging IC – bq24650. For this configuration, will the PGND connect to Ground? But until here, there is no PACK- involved too. Please advice.
3. Can you please show me the new drawing based on the reference design of bq34z100? (battery with only 2 terminals)
Thanks.
Lee
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Difference between BQ2013H and BQ34Z110
Hi,
I was wandering what was the best chip between the BQ2013H and the BQ34Z110 for lead acid battery use. I am working on UPS (un-interruptible power supplies) applications.
I get the feeling that the BQ34Z110 is an improved version of the BQ2013H, optimized for lead acid, but I could be wrong.
Hope someone can help me.
BQ2013H : http://www.ti.com/product/bq2013H#technicaldocuments
BQ34Z110 : http://www.ti.com/product/bq34z110
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BQ34Z110- use with multiplexed battery packs
Hi team,
In one our applications, we need to gauge the capacity on multiple lead acid battery packs.
To do this, we plan to use a single bq device and sequentially connect the packs.
Will this topology be possible? Can this be implemented by changing only the "pack+" and "pack-" connections?
Regards,
Gitesh
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bq27531 SOH is not changing
Hello again,
During the past few months of bring up and testing I was reviewing my notes and noticed the SOH parameter hasn't changed since my initial learning cycle.
I've been using the batteries down to about 20% SOC daily, sometimes down to 0%, then recharging. I'm doing this about twice daily, though not at regular intervals or with consistent rest periods.
The initial value after the learning cycle for three setups was 2995, 2981, and 2961 for a Design Capacity of 3000mAh. (Cell is 2900mAh min, 3000mAh typical). The SOH at that time was 93, 92, and 93% respectively.
The numbers are now 93, 92, 91% with FCC of 2517, 2559, and 2403. I should note that one board is using CCCV, one is using MLC, and one is using MLC w/SOH Compensation.
Just hoping to understand this better before I commit to a GG file...
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BQ20Z95 LiPoly: compatibility and reset
Hello everybody,
I'm a total newbie on the battery mgmt topic, but i bought a BQ20Z95EVM to test how it monitors and manages che charge/discharge cycle of three series cells.
These are the questions:
1) The cells are three MLP674361, i.e. LiPoly chemistry, 2000mAh, 4.2 Charge Voltage: which chemistry should I select on bqEasy? It seems that in the table there's no LiPoly configuration available...
2) I'm trying to calibrate the board following the procedure written on the slua409a.pdf document ("Calibration of bq20zXX Using EV Software"). Unfortunately this is not my first operation on the device, so probably there's some configuration in the flash memory that prevents things to end in the right way. I would like to understand how can I completely reset everything to factory, i.e. dataflash values and firmware?
Thank you very much in advance
Giuseppe
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bq34z110 led modes
From Bq34z110 datasheet:
The LED/Comm Configuration register
Bits 0, 1, 2 are a code for one of five modes. 0 = No LED, 1 = Single LED, 2 = Four LEDs, 3 = External LEDs
with I2C comm, 4 = External LEDs with HDQ comm
Bits 4, 5, 6, and 7 are a binary code for number of external LEDs.
I am a little confused here: Can I use single Led mode and I2C communication or I should use external leds mode and 2 leds?
If I don't use the pins P4/SDA and P3/SCL for leds (only for I2C); can I use single led mode?
More than that is it possibile for me to use singe/four leds modes and I2C communication(without using SN74HC164) ?
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calibration BQ27541-v200
Hello,
How to calibrate the BQ27541-v200 without the "bq evaluation software"? I create a autotest bench who integred with labview the configuration and the calibration of the BQ27541-v200 gauge.
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Improper behavior of DSG PIN in Bq34Z950
Hello
I used BQ34Z950 IC to develop protection circuit for lithium ion battery pack 4s3p.
But facing problem regarding discharge Mosfet Drive Pin (DSG) of IC. This pin goes high (to 16v) whenever charging voltage is applied but there is no current flow in the battery pack. As applied voltage is removed pin goes again to 0v.
PACK pin shows the same behavior. While out off 5 leds 3 led state is ON for battery pack voltage 14.8v. These LED indication seems to be correct.
TOUT pin goes (2.5v)high after definite period of time.
Does device goes in shutdown mode? Is there any other reason for such behavior?
Thanks in advance
Swapnil Misal
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EV2300 64-bit drivers available for download
The "unofficial" 64-bit Windows drivers are now available for download from the Files section of the Battery Management forum.
Here is the direct link:
Why are they unofficial?
First, the officially supported tool to use with 64-bit Windows is the EV2400 which is now available for ordering.
Second, the 64-bit EV2300 USB implementation may conflict with other products that use the same default PID on the USB bus, like the TUSB3210 EVM.
Third, it hasn't been extensively tested on all Windows software and hardware configurations.
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