BQ34110: How to learning NIMH battery gauge ic

Martin Chen

Part Number: BQ34110

Hi SIr

At present, there is a new case that needs to use NIMH battery,

we need gauge IC to know the state of battery charge and discharge, we consider designing BQ34110 on the main board.

Q1. Is it feasible to design the IC on the board?

Q2. How to let the gauge IC learn the charge-discharge curve? What is the process?

Is there any EVK that can provide verification?

Thanks,

3 年多前

0 Cherry Zhou 3 年多前

TI__Guru* 81380 points

Hi we've got the problem and escalated to e2e, please expect the response. Thanks.

0 Cherry Zhou 3 年多前回复 Cherry Zhou

TI__Guru* 81380 points

Hi,

This device is a good choice for NIMH batteries. It uses the CEDV algorithm which generally works better with NIMH. So for question 1, it is feasible to use this gauge with this chemistry. As for question two, you should reference this document. Essentially, you will need to discharge at their expected medium and high rates in three different temperatures, and submit the data to our tools which will give the information needed to program the gauge.

What exactly do you mean by EVK? We do have EVM's such as this https://www.ti.com/tool/BQ34110EVM-796 that you could use for verification.

0 Martin Chen 3 年多前回复 Cherry Zhou

Hi Cherry

Thanks for your reply

Cherry Zhou 说：
What exactly do you mean by EVK?

Yes, I mean EVM.

So I want to confirm again, I can use this EVK (BQ34110EVM-796) to learn charge and discharge data.

Thanks.

0 Cherry Zhou 3 年多前回复 Martin Chen

TI__Guru* 81380 points

Hi Martin,

You can use the EVM to generate the files used for the GPC tool. Ideally, you would do it in your actual system for the most accurate data, but for CEDV, the difference isn't as big as it is in impedance track so it should be okay. But to reiterate, using the actual system will deliver the best results.

Thanks.

0 Martin Chen 3 年多前回复 Cherry Zhou

Hi Cherry

Thanks your reply.
Do you have the FAE of gauge IC in Taiwan?
Please provide your contact information.

Thanks.

0 Cherry Zhou 3 年多前回复 Martin Chen

TI__Guru* 81380 points

Hi Martin,

We feel sorry about that, there's no FAE can support offline in Taiwan. If you need any technical support, we suggest to create a new thread on the respective forum, and here will be many specialists who can help with.

Thanks!

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BQ34110: How to learning NIMH battery gauge ic